libtool
stamp-h1
output/
-win32port/ipch/
-win32port/Debug*/
-win32port/Release*/
-win32port/server/Debug*/
-win32port/server/Release*/
-win32port/client/Debug*/
-win32port/client/Release*/
-win32port/libwebsocketswin32/Debug*/
-win32port/libwebsocketswin32/Release*/
-win32port/zlib/Debug*/
-win32port/zlib/Release*/
*.vcxproj.user
*.opensdf
*.sdf
Name: libwebsockets
Description: Websockets server and client library
Version: ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}
+Requires: openssl1.1
Libs: -L\${libdir} -lwebsockets
Cflags: -I\${includedir}"
Name: libwebsockets_static
Description: Websockets server and client static library
Version: ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}
+Requires: openssl1.1
Libs: -L\${libdir} -lwebsockets_static
Libs.private:
+Copyright (c) 1987, 1993, 1994, 1996 The Regents of the University of California. All rights reserved.
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
Libwebsockets and included programs are provided under the terms of the GNU
Library General Public License (LGPL) 2.1, with the following exceptions:
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010-2015 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include "private-libwebsockets.h"
+
+static int
+lws_0405_frame_mask_generate(struct lws *wsi)
+{
+#if 0
+ wsi->u.ws.mask[0] = 0;
+ wsi->u.ws.mask[1] = 0;
+ wsi->u.ws.mask[2] = 0;
+ wsi->u.ws.mask[3] = 0;
+#else
+ int n;
+ /* fetch the per-frame nonce */
+
+ n = lws_get_random(lws_get_context(wsi), wsi->u.ws.mask, 4);
+ if (n != 4) {
+ lwsl_parser("Unable to read from random device %s %d\n",
+ SYSTEM_RANDOM_FILEPATH, n);
+ return 1;
+ }
+#endif
+ /* start masking from first byte of masking key buffer */
+ wsi->u.ws.mask_idx = 0;
+
+ return 0;
+}
+
+#ifdef _DEBUG
+
+LWS_VISIBLE void lwsl_hexdump(void *vbuf, size_t len)
+{
+ unsigned char *buf = (unsigned char *)vbuf;
+ unsigned int n, m, start;
+ char line[80];
+ char *p;
+
+ lwsl_parser("\n");
+
+ for (n = 0; n < len;) {
+ start = n;
+ p = line;
+
+ p += sprintf(p, "%04X: ", start);
+
+ for (m = 0; m < 16 && n < len; m++)
+ p += sprintf(p, "%02X ", buf[n++]);
+ while (m++ < 16)
+ p += sprintf(p, " ");
+
+ p += sprintf(p, " ");
+
+ for (m = 0; m < 16 && (start + m) < len; m++) {
+ if (buf[start + m] >= ' ' && buf[start + m] < 127)
+ *p++ = buf[start + m];
+ else
+ *p++ = '.';
+ }
+ while (m++ < 16)
+ *p++ = ' ';
+
+ *p++ = '\n';
+ *p = '\0';
+ lwsl_debug("%s", line);
+ }
+ lwsl_debug("\n");
+}
+
+#endif
+
+/*
+ * notice this returns number of bytes consumed, or -1
+ */
+
+int lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len)
+{
+ struct lws_context *context = lws_get_context(wsi);
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ size_t real_len = len;
+ unsigned int n;
+ int m;
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_WRITE, 1);
+
+ if (!len)
+ return 0;
+ /* just ignore sends after we cleared the truncation buffer */
+ if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE &&
+ !wsi->trunc_len)
+ return len;
+
+ if (wsi->trunc_len && (buf < wsi->trunc_alloc ||
+ buf > (wsi->trunc_alloc + wsi->trunc_len + wsi->trunc_offset))) {
+ char dump[20];
+ strncpy(dump, (char *)buf, sizeof(dump) - 1);
+ dump[sizeof(dump) - 1] = '\0';
+#if defined(LWS_WITH_ESP8266)
+ lwsl_err("****** %p: Sending new %lu (%s), pending truncated ...\n",
+ wsi, (unsigned long)len, dump);
+#else
+ lwsl_err("****** %p: Sending new %lu (%s), pending truncated ...\n"
+ " It's illegal to do an lws_write outside of\n"
+ " the writable callback: fix your code",
+ wsi, (unsigned long)len, dump);
+#endif
+ assert(0);
+
+ return -1;
+ }
+
+ m = lws_ext_cb_active(wsi, LWS_EXT_CB_PACKET_TX_DO_SEND, &buf, len);
+ if (m < 0)
+ return -1;
+ if (m) /* handled */ {
+ n = m;
+ goto handle_truncated_send;
+ }
+
+ if (!lws_socket_is_valid(wsi->desc.sockfd))
+ lwsl_warn("** error invalid sock but expected to send\n");
+
+ /* limit sending */
+ if (wsi->protocol->tx_packet_size)
+ n = wsi->protocol->tx_packet_size;
+ else {
+ n = wsi->protocol->rx_buffer_size;
+ if (!n)
+ n = context->pt_serv_buf_size;
+ }
+ n += LWS_PRE + 4;
+ if (n > len)
+ n = len;
+#if defined(LWS_WITH_ESP8266)
+ if (wsi->pending_send_completion) {
+ n = 0;
+ goto handle_truncated_send;
+ }
+#endif
+
+ /* nope, send it on the socket directly */
+ lws_latency_pre(context, wsi);
+ n = lws_ssl_capable_write(wsi, buf, n);
+ lws_latency(context, wsi, "send lws_issue_raw", n, n == len);
+
+ //lwsl_notice("lws_ssl_capable_write: %d\n", n);
+
+ switch (n) {
+ case LWS_SSL_CAPABLE_ERROR:
+ /* we're going to close, let close know sends aren't possible */
+ wsi->socket_is_permanently_unusable = 1;
+ return -1;
+ case LWS_SSL_CAPABLE_MORE_SERVICE:
+ /* nothing got sent, not fatal, retry the whole thing later */
+ n = 0;
+ break;
+ }
+
+handle_truncated_send:
+ /*
+ * we were already handling a truncated send?
+ */
+ if (wsi->trunc_len) {
+ lwsl_info("%p partial adv %d (vs %ld)\n", wsi, n, (long)real_len);
+ wsi->trunc_offset += n;
+ wsi->trunc_len -= n;
+
+ if (!wsi->trunc_len) {
+ lwsl_info("***** %p partial send completed\n", wsi);
+ /* done with it, but don't free it */
+ n = real_len;
+ if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE) {
+ lwsl_info("***** %p signalling to close now\n", wsi);
+ return -1; /* retry closing now */
+ }
+ }
+ /* always callback on writeable */
+ lws_callback_on_writable(wsi);
+
+ return n;
+ }
+
+ if ((unsigned int)n == real_len)
+ /* what we just sent went out cleanly */
+ return n;
+
+ /*
+ * Newly truncated send. Buffer the remainder (it will get
+ * first priority next time the socket is writable)
+ */
+ lwsl_debug("%p new partial sent %d from %lu total\n", wsi, n,
+ (unsigned long)real_len);
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_WRITE_PARTIALS, 1);
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_B_PARTIALS_ACCEPTED_PARTS, n);
+
+ /*
+ * - if we still have a suitable malloc lying around, use it
+ * - or, if too small, reallocate it
+ * - or, if no buffer, create it
+ */
+ if (!wsi->trunc_alloc || real_len - n > wsi->trunc_alloc_len) {
+ lws_free(wsi->trunc_alloc);
+
+ wsi->trunc_alloc_len = real_len - n;
+ wsi->trunc_alloc = lws_malloc(real_len - n);
+ if (!wsi->trunc_alloc) {
+ lwsl_err("truncated send: unable to malloc %lu\n",
+ (unsigned long)(real_len - n));
+ return -1;
+ }
+ }
+ wsi->trunc_offset = 0;
+ wsi->trunc_len = real_len - n;
+ memcpy(wsi->trunc_alloc, buf + n, real_len - n);
+
+ /* since something buffered, force it to get another chance to send */
+ lws_callback_on_writable(wsi);
+
+ return real_len;
+}
+
+LWS_VISIBLE int lws_write(struct lws *wsi, unsigned char *buf, size_t len,
+ enum lws_write_protocol wp)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ int masked7 = (wsi->mode == LWSCM_WS_CLIENT);
+ unsigned char is_masked_bit = 0;
+ unsigned char *dropmask = NULL;
+ struct lws_tokens eff_buf;
+ int pre = 0, n;
+ size_t orig_len = len;
+
+ if (wsi->parent_carries_io) {
+ struct lws_write_passthru pas;
+
+ pas.buf = buf;
+ pas.len = len;
+ pas.wp = wp;
+ pas.wsi = wsi;
+
+ if (wsi->parent->protocol->callback(wsi->parent,
+ LWS_CALLBACK_CHILD_WRITE_VIA_PARENT,
+ wsi->parent->user_space,
+ (void *)&pas, 0))
+ return 1;
+
+ return len;
+ }
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_LWS_WRITE, 1);
+
+ if ((int)len < 0) {
+ lwsl_err("%s: suspicious len int %d, ulong %lu\n", __func__,
+ (int)len, (unsigned long)len);
+ return -1;
+ }
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_B_WRITE, len);
+
+#ifdef LWS_WITH_ACCESS_LOG
+ wsi->access_log.sent += len;
+#endif
+ if (wsi->vhost)
+ wsi->vhost->conn_stats.tx += len;
+
+ if (wsi->state == LWSS_ESTABLISHED && wsi->u.ws.tx_draining_ext) {
+ /* remove us from the list */
+ struct lws **w = &pt->tx_draining_ext_list;
+
+ // lwsl_notice("%s: TX EXT DRAINING: Remove from list\n", __func__);
+ wsi->u.ws.tx_draining_ext = 0;
+ /* remove us from context draining ext list */
+ while (*w) {
+ if (*w == wsi) {
+ *w = wsi->u.ws.tx_draining_ext_list;
+ break;
+ }
+ w = &((*w)->u.ws.tx_draining_ext_list);
+ }
+ wsi->u.ws.tx_draining_ext_list = NULL;
+ wp = (wsi->u.ws.tx_draining_stashed_wp & 0xc0) |
+ LWS_WRITE_CONTINUATION;
+
+ lwsl_ext("FORCED draining wp to 0x%02X\n", wp);
+ }
+
+ lws_restart_ws_ping_pong_timer(wsi);
+
+ if (wp == LWS_WRITE_HTTP ||
+ wp == LWS_WRITE_HTTP_FINAL ||
+ wp == LWS_WRITE_HTTP_HEADERS)
+ goto send_raw;
+
+ /* if not in a state to send stuff, then just send nothing */
+
+ if (wsi->state != LWSS_ESTABLISHED &&
+ ((wsi->state != LWSS_RETURNED_CLOSE_ALREADY &&
+ wsi->state != LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION &&
+ wsi->state != LWSS_AWAITING_CLOSE_ACK) ||
+ wp != LWS_WRITE_CLOSE)) {
+ lwsl_debug("binning\n");
+ return 0;
+ }
+
+ /* if we are continuing a frame that already had its header done */
+
+ if (wsi->u.ws.inside_frame) {
+ lwsl_debug("INSIDE FRAME\n");
+ goto do_more_inside_frame;
+ }
+
+ wsi->u.ws.clean_buffer = 1;
+
+ /*
+ * give a chance to the extensions to modify payload
+ * the extension may decide to produce unlimited payload erratically
+ * (eg, compression extension), so we require only that if he produces
+ * something, it will be a complete fragment of the length known at
+ * the time (just the fragment length known), and if he has
+ * more we will come back next time he is writeable and allow him to
+ * produce more fragments until he's drained.
+ *
+ * This allows what is sent each time it is writeable to be limited to
+ * a size that can be sent without partial sends or blocking, allows
+ * interleaving of control frames and other connection service.
+ */
+ eff_buf.token = (char *)buf;
+ eff_buf.token_len = len;
+
+ switch ((int)wp) {
+ case LWS_WRITE_PING:
+ case LWS_WRITE_PONG:
+ case LWS_WRITE_CLOSE:
+ break;
+ default:
+ lwsl_debug("LWS_EXT_CB_PAYLOAD_TX\n");
+ n = lws_ext_cb_active(wsi, LWS_EXT_CB_PAYLOAD_TX, &eff_buf, wp);
+ if (n < 0)
+ return -1;
+
+ if (n && eff_buf.token_len) {
+ lwsl_debug("drain len %d\n", (int)eff_buf.token_len);
+ /* extension requires further draining */
+ wsi->u.ws.tx_draining_ext = 1;
+ wsi->u.ws.tx_draining_ext_list = pt->tx_draining_ext_list;
+ pt->tx_draining_ext_list = wsi;
+ /* we must come back to do more */
+ lws_callback_on_writable(wsi);
+ /*
+ * keep a copy of the write type for the overall
+ * action that has provoked generation of these
+ * fragments, so the last guy can use its FIN state.
+ */
+ wsi->u.ws.tx_draining_stashed_wp = wp;
+ /* this is definitely not actually the last fragment
+ * because the extension asserted he has more coming
+ * So make sure this intermediate one doesn't go out
+ * with a FIN.
+ */
+ wp |= LWS_WRITE_NO_FIN;
+ }
+
+ if (eff_buf.token_len && wsi->u.ws.stashed_write_pending) {
+ wsi->u.ws.stashed_write_pending = 0;
+ wp = (wp &0xc0) | (int)wsi->u.ws.stashed_write_type;
+ }
+ }
+
+ /*
+ * an extension did something we need to keep... for example, if
+ * compression extension, it has already updated its state according
+ * to this being issued
+ */
+ if ((char *)buf != eff_buf.token) {
+ /*
+ * ext might eat it, but not have anything to issue yet.
+ * In that case we have to follow his lead, but stash and
+ * replace the write type that was lost here the first time.
+ */
+ if (len && !eff_buf.token_len) {
+ if (!wsi->u.ws.stashed_write_pending)
+ wsi->u.ws.stashed_write_type = (char)wp & 0x3f;
+ wsi->u.ws.stashed_write_pending = 1;
+ return len;
+ }
+ /*
+ * extension recreated it:
+ * need to buffer this if not all sent
+ */
+ wsi->u.ws.clean_buffer = 0;
+ }
+
+ buf = (unsigned char *)eff_buf.token;
+ len = eff_buf.token_len;
+
+ lwsl_debug("%p / %d\n", buf, (int)len);
+
+ if (!buf) {
+ lwsl_err("null buf (%d)\n", (int)len);
+ return -1;
+ }
+
+ switch (wsi->ietf_spec_revision) {
+ case 13:
+ if (masked7) {
+ pre += 4;
+ dropmask = &buf[0 - pre];
+ is_masked_bit = 0x80;
+ }
+
+ switch (wp & 0xf) {
+ case LWS_WRITE_TEXT:
+ n = LWSWSOPC_TEXT_FRAME;
+ break;
+ case LWS_WRITE_BINARY:
+ n = LWSWSOPC_BINARY_FRAME;
+ break;
+ case LWS_WRITE_CONTINUATION:
+ n = LWSWSOPC_CONTINUATION;
+ break;
+
+ case LWS_WRITE_CLOSE:
+ n = LWSWSOPC_CLOSE;
+ break;
+ case LWS_WRITE_PING:
+ n = LWSWSOPC_PING;
+ break;
+ case LWS_WRITE_PONG:
+ n = LWSWSOPC_PONG;
+ break;
+ default:
+ lwsl_warn("lws_write: unknown write opc / wp\n");
+ return -1;
+ }
+
+ if (!(wp & LWS_WRITE_NO_FIN))
+ n |= 1 << 7;
+
+ if (len < 126) {
+ pre += 2;
+ buf[-pre] = n;
+ buf[-pre + 1] = (unsigned char)(len | is_masked_bit);
+ } else {
+ if (len < 65536) {
+ pre += 4;
+ buf[-pre] = n;
+ buf[-pre + 1] = 126 | is_masked_bit;
+ buf[-pre + 2] = (unsigned char)(len >> 8);
+ buf[-pre + 3] = (unsigned char)len;
+ } else {
+ pre += 10;
+ buf[-pre] = n;
+ buf[-pre + 1] = 127 | is_masked_bit;
+#if defined __LP64__
+ buf[-pre + 2] = (len >> 56) & 0x7f;
+ buf[-pre + 3] = len >> 48;
+ buf[-pre + 4] = len >> 40;
+ buf[-pre + 5] = len >> 32;
+#else
+ buf[-pre + 2] = 0;
+ buf[-pre + 3] = 0;
+ buf[-pre + 4] = 0;
+ buf[-pre + 5] = 0;
+#endif
+ buf[-pre + 6] = (unsigned char)(len >> 24);
+ buf[-pre + 7] = (unsigned char)(len >> 16);
+ buf[-pre + 8] = (unsigned char)(len >> 8);
+ buf[-pre + 9] = (unsigned char)len;
+ }
+ }
+ break;
+ }
+
+do_more_inside_frame:
+
+ /*
+ * Deal with masking if we are in client -> server direction and
+ * the wp demands it
+ */
+
+ if (masked7) {
+ if (!wsi->u.ws.inside_frame)
+ if (lws_0405_frame_mask_generate(wsi)) {
+ lwsl_err("frame mask generation failed\n");
+ return -1;
+ }
+
+ /*
+ * in v7, just mask the payload
+ */
+ if (dropmask) { /* never set if already inside frame */
+ for (n = 4; n < (int)len + 4; n++)
+ dropmask[n] = dropmask[n] ^ wsi->u.ws.mask[
+ (wsi->u.ws.mask_idx++) & 3];
+
+ /* copy the frame nonce into place */
+ memcpy(dropmask, wsi->u.ws.mask, 4);
+ }
+ }
+
+send_raw:
+ switch ((int)wp) {
+ case LWS_WRITE_CLOSE:
+/* lwsl_hexdump(&buf[-pre], len); */
+ case LWS_WRITE_HTTP:
+ case LWS_WRITE_HTTP_FINAL:
+ case LWS_WRITE_HTTP_HEADERS:
+ case LWS_WRITE_PONG:
+ case LWS_WRITE_PING:
+#ifdef LWS_USE_HTTP2
+ if (wsi->mode == LWSCM_HTTP2_SERVING) {
+ unsigned char flags = 0;
+
+ n = LWS_HTTP2_FRAME_TYPE_DATA;
+ if (wp == LWS_WRITE_HTTP_HEADERS) {
+ n = LWS_HTTP2_FRAME_TYPE_HEADERS;
+ flags = LWS_HTTP2_FLAG_END_HEADERS;
+ if (wsi->u.http2.send_END_STREAM)
+ flags |= LWS_HTTP2_FLAG_END_STREAM;
+ }
+
+ if ((wp == LWS_WRITE_HTTP ||
+ wp == LWS_WRITE_HTTP_FINAL) &&
+ wsi->u.http.content_length) {
+ wsi->u.http.content_remain -= len;
+ lwsl_info("%s: content_remain = %llu\n", __func__,
+ (unsigned long long)wsi->u.http.content_remain);
+ if (!wsi->u.http.content_remain) {
+ lwsl_info("%s: selecting final write mode\n", __func__);
+ wp = LWS_WRITE_HTTP_FINAL;
+ }
+ }
+
+ if (wp == LWS_WRITE_HTTP_FINAL && wsi->u.http2.END_STREAM) {
+ lwsl_info("%s: setting END_STREAM\n", __func__);
+ flags |= LWS_HTTP2_FLAG_END_STREAM;
+ }
+
+ return lws_http2_frame_write(wsi, n, flags,
+ wsi->u.http2.my_stream_id, len, buf);
+ }
+#endif
+ return lws_issue_raw(wsi, (unsigned char *)buf - pre, len + pre);
+ default:
+ break;
+ }
+
+ /*
+ * give any active extensions a chance to munge the buffer
+ * before send. We pass in a pointer to an lws_tokens struct
+ * prepared with the default buffer and content length that's in
+ * there. Rather than rewrite the default buffer, extensions
+ * that expect to grow the buffer can adapt .token to
+ * point to their own per-connection buffer in the extension
+ * user allocation. By default with no extensions or no
+ * extension callback handling, just the normal input buffer is
+ * used then so it is efficient.
+ *
+ * callback returns 1 in case it wants to spill more buffers
+ *
+ * This takes care of holding the buffer if send is incomplete, ie,
+ * if wsi->u.ws.clean_buffer is 0 (meaning an extension meddled with
+ * the buffer). If wsi->u.ws.clean_buffer is 1, it will instead
+ * return to the user code how much OF THE USER BUFFER was consumed.
+ */
+
+ n = lws_issue_raw_ext_access(wsi, buf - pre, len + pre);
+ wsi->u.ws.inside_frame = 1;
+ if (n <= 0)
+ return n;
+
+ if (n == (int)len + pre) {
+ /* everything in the buffer was handled (or rebuffered...) */
+ wsi->u.ws.inside_frame = 0;
+ return orig_len;
+ }
+
+ /*
+ * it is how many bytes of user buffer got sent... may be < orig_len
+ * in which case callback when writable has already been arranged
+ * and user code can call lws_write() again with the rest
+ * later.
+ */
+
+ return n - pre;
+}
+
+LWS_VISIBLE int lws_serve_http_file_fragment(struct lws *wsi)
+{
+ struct lws_context *context = wsi->context;
+ struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
+ struct lws_process_html_args args;
+ lws_filepos_t amount, poss;
+ unsigned char *p;
+#if defined(LWS_WITH_RANGES)
+ unsigned char finished = 0;
+#endif
+ int n, m;
+
+ // lwsl_notice("%s (trunc len %d)\n", __func__, wsi->trunc_len);
+
+ while (wsi->http2_substream || !lws_send_pipe_choked(wsi)) {
+
+ if (wsi->trunc_len) {
+ if (lws_issue_raw(wsi, wsi->trunc_alloc +
+ wsi->trunc_offset,
+ wsi->trunc_len) < 0) {
+ lwsl_info("%s: closing\n", __func__);
+ goto file_had_it;
+ }
+ continue;
+ }
+
+ if (wsi->u.http.filepos == wsi->u.http.filelen)
+ goto all_sent;
+
+ n = 0;
+
+ p = pt->serv_buf;
+
+#if defined(LWS_WITH_RANGES)
+ if (wsi->u.http.range.count_ranges && !wsi->u.http.range.inside) {
+
+ lwsl_notice("%s: doing range start %llu\n", __func__, wsi->u.http.range.start);
+
+ if ((long long)lws_vfs_file_seek_cur(wsi->u.http.fop_fd,
+ wsi->u.http.range.start -
+ wsi->u.http.filepos) < 0)
+ goto file_had_it;
+
+ wsi->u.http.filepos = wsi->u.http.range.start;
+
+ if (wsi->u.http.range.count_ranges > 1) {
+ n = lws_snprintf((char *)p, context->pt_serv_buf_size,
+ "_lws\x0d\x0a"
+ "Content-Type: %s\x0d\x0a"
+ "Content-Range: bytes %llu-%llu/%llu\x0d\x0a"
+ "\x0d\x0a",
+ wsi->u.http.multipart_content_type,
+ wsi->u.http.range.start,
+ wsi->u.http.range.end,
+ wsi->u.http.range.extent);
+ p += n;
+ }
+
+ wsi->u.http.range.budget = wsi->u.http.range.end -
+ wsi->u.http.range.start + 1;
+ wsi->u.http.range.inside = 1;
+ }
+#endif
+
+ poss = context->pt_serv_buf_size - n;
+
+ /*
+ * if there is a hint about how much we will do well to send at one time,
+ * restrict ourselves to only trying to send that.
+ */
+ if (wsi->protocol->tx_packet_size && poss > wsi->protocol->tx_packet_size)
+ poss = wsi->protocol->tx_packet_size;
+
+#if defined(LWS_WITH_RANGES)
+ if (wsi->u.http.range.count_ranges) {
+ if (wsi->u.http.range.count_ranges > 1)
+ poss -= 7; /* allow for final boundary */
+ if (poss > wsi->u.http.range.budget)
+ poss = wsi->u.http.range.budget;
+ }
+#endif
+ if (wsi->sending_chunked) {
+ /* we need to drop the chunk size in here */
+ p += 10;
+ /* allow for the chunk to grow by 128 in translation */
+ poss -= 10 + 128;
+ }
+
+ if (lws_vfs_file_read(wsi->u.http.fop_fd, &amount, p, poss) < 0)
+ goto file_had_it; /* caller will close */
+
+ //lwsl_notice("amount %ld\n", amount);
+
+ if (wsi->sending_chunked)
+ n = (int)amount;
+ else
+ n = (p - pt->serv_buf) + (int)amount;
+ if (n) {
+ lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT,
+ context->timeout_secs);
+
+ if (wsi->sending_chunked) {
+ args.p = (char *)p;
+ args.len = n;
+ args.max_len = (unsigned int)poss + 128;
+ args.final = wsi->u.http.filepos + n ==
+ wsi->u.http.filelen;
+ if (user_callback_handle_rxflow(
+ wsi->vhost->protocols[(int)wsi->protocol_interpret_idx].callback, wsi,
+ LWS_CALLBACK_PROCESS_HTML,
+ wsi->user_space, &args, 0) < 0)
+ goto file_had_it;
+ n = args.len;
+ p = (unsigned char *)args.p;
+ } else
+ p = pt->serv_buf;
+
+#if defined(LWS_WITH_RANGES)
+ if (wsi->u.http.range.send_ctr + 1 ==
+ wsi->u.http.range.count_ranges && // last range
+ wsi->u.http.range.count_ranges > 1 && // was 2+ ranges (ie, multipart)
+ wsi->u.http.range.budget - amount == 0) {// final part
+ n += lws_snprintf((char *)pt->serv_buf + n, 6,
+ "_lws\x0d\x0a"); // append trailing boundary
+ lwsl_debug("added trailing boundary\n");
+ }
+#endif
+ m = lws_write(wsi, p, n,
+ wsi->u.http.filepos == wsi->u.http.filelen ?
+ LWS_WRITE_HTTP_FINAL :
+ LWS_WRITE_HTTP
+ );
+ if (m < 0)
+ goto file_had_it;
+
+ wsi->u.http.filepos += amount;
+
+#if defined(LWS_WITH_RANGES)
+ if (wsi->u.http.range.count_ranges >= 1) {
+ wsi->u.http.range.budget -= amount;
+ if (wsi->u.http.range.budget == 0) {
+ lwsl_notice("range budget exhausted\n");
+ wsi->u.http.range.inside = 0;
+ wsi->u.http.range.send_ctr++;
+
+ if (lws_ranges_next(&wsi->u.http.range) < 1) {
+ finished = 1;
+ goto all_sent;
+ }
+ }
+ }
+#endif
+
+ if (m != n) {
+ /* adjust for what was not sent */
+ if (lws_vfs_file_seek_cur(wsi->u.http.fop_fd,
+ m - n) ==
+ (unsigned long)-1)
+ goto file_had_it;
+ }
+ }
+all_sent:
+ if ((!wsi->trunc_len && wsi->u.http.filepos == wsi->u.http.filelen)
+#if defined(LWS_WITH_RANGES)
+ || finished)
+#else
+ )
+#endif
+ {
+ wsi->state = LWSS_HTTP;
+ /* we might be in keepalive, so close it off here */
+ lws_vfs_file_close(&wsi->u.http.fop_fd);
+
+ lwsl_debug("file completed\n");
+
+ if (wsi->protocol->callback)
+ /* ignore callback returned value */
+ if (user_callback_handle_rxflow(
+ wsi->protocol->callback, wsi,
+ LWS_CALLBACK_HTTP_FILE_COMPLETION,
+ wsi->user_space, NULL, 0) < 0)
+ return -1;
+
+ return 1; /* >0 indicates completed */
+ }
+ }
+
+ lws_callback_on_writable(wsi);
+
+ return 0; /* indicates further processing must be done */
+
+file_had_it:
+ lws_vfs_file_close(&wsi->u.http.fop_fd);
+
+ return -1;
+}
+
+#if LWS_POSIX
+LWS_VISIBLE int
+lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len)
+{
+ struct lws_context *context = wsi->context;
+ struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
+ int n;
+
+ lws_stats_atomic_bump(context, pt, LWSSTATS_C_API_READ, 1);
+
+ n = recv(wsi->desc.sockfd, (char *)buf, len, 0);
+ if (n >= 0) {
+ if (wsi->vhost)
+ wsi->vhost->conn_stats.rx += n;
+ lws_stats_atomic_bump(context, pt, LWSSTATS_B_READ, n);
+ lws_restart_ws_ping_pong_timer(wsi);
+ return n;
+ }
+#if LWS_POSIX
+ if (LWS_ERRNO == LWS_EAGAIN ||
+ LWS_ERRNO == LWS_EWOULDBLOCK ||
+ LWS_ERRNO == LWS_EINTR)
+ return LWS_SSL_CAPABLE_MORE_SERVICE;
+#endif
+ lwsl_notice("error on reading from skt : %d\n", LWS_ERRNO);
+ return LWS_SSL_CAPABLE_ERROR;
+}
+
+LWS_VISIBLE int
+lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len)
+{
+ int n = 0;
+
+#if LWS_POSIX
+ n = send(wsi->desc.sockfd, (char *)buf, len, MSG_NOSIGNAL);
+// lwsl_info("%s: sent len %d result %d", __func__, len, n);
+ if (n >= 0)
+ return n;
+
+ if (LWS_ERRNO == LWS_EAGAIN ||
+ LWS_ERRNO == LWS_EWOULDBLOCK ||
+ LWS_ERRNO == LWS_EINTR) {
+ if (LWS_ERRNO == LWS_EWOULDBLOCK) {
+ lws_set_blocking_send(wsi);
+ }
+
+ return LWS_SSL_CAPABLE_MORE_SERVICE;
+ }
+#else
+ (void)n;
+ (void)wsi;
+ (void)buf;
+ (void)len;
+ // !!!
+#endif
+
+ lwsl_debug("ERROR writing len %d to skt fd %d err %d / errno %d\n", len, wsi->desc.sockfd, n, LWS_ERRNO);
+ return LWS_SSL_CAPABLE_ERROR;
+}
+#endif
+LWS_VISIBLE int
+lws_ssl_pending_no_ssl(struct lws *wsi)
+{
+ (void)wsi;
+#if defined(LWS_WITH_ESP32)
+ return 100;
+#else
+ return 0;
+#endif
+}
--- /dev/null
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010-2015 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include "private-libwebsockets.h"
+
+static int
+lws_calllback_as_writeable(struct lws *wsi)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ int n;
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_WRITEABLE_CB, 1);
+#if defined(LWS_WITH_STATS)
+ {
+ uint64_t ul = time_in_microseconds() - wsi->active_writable_req_us;
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_MS_WRITABLE_DELAY, ul);
+ lws_stats_atomic_max(wsi->context, pt, LWSSTATS_MS_WORST_WRITABLE_DELAY, ul);
+ wsi->active_writable_req_us = 0;
+ }
+#endif
+
+ switch (wsi->mode) {
+ case LWSCM_RAW:
+ n = LWS_CALLBACK_RAW_WRITEABLE;
+ break;
+ case LWSCM_RAW_FILEDESC:
+ n = LWS_CALLBACK_RAW_WRITEABLE_FILE;
+ break;
+ case LWSCM_WS_CLIENT:
+ n = LWS_CALLBACK_CLIENT_WRITEABLE;
+ break;
+ case LWSCM_WSCL_ISSUE_HTTP_BODY:
+ n = LWS_CALLBACK_CLIENT_HTTP_WRITEABLE;
+ break;
+ case LWSCM_WS_SERVING:
+ n = LWS_CALLBACK_SERVER_WRITEABLE;
+ break;
+ default:
+ n = LWS_CALLBACK_HTTP_WRITEABLE;
+ break;
+ }
+
+ return user_callback_handle_rxflow(wsi->protocol->callback,
+ wsi, (enum lws_callback_reasons) n,
+ wsi->user_space, NULL, 0);
+}
+
+LWS_VISIBLE int
+lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd)
+{
+ int write_type = LWS_WRITE_PONG;
+ struct lws_tokens eff_buf;
+#ifdef LWS_USE_HTTP2
+ struct lws *wsi2;
+#endif
+ int ret, m, n;
+
+// lwsl_err("%s: %p\n", __func__, wsi);
+
+ wsi->leave_pollout_active = 0;
+ wsi->handling_pollout = 1;
+ /*
+ * if another thread wants POLLOUT on us, from here on while
+ * handling_pollout is set, he will only set leave_pollout_active.
+ * If we are going to disable POLLOUT, we will check that first.
+ */
+
+ /*
+ * user callback is lowest priority to get these notifications
+ * actually, since other pending things cannot be disordered
+ */
+
+ /* Priority 1: pending truncated sends are incomplete ws fragments
+ * If anything else sent first the protocol would be
+ * corrupted.
+ */
+ if (wsi->trunc_len) {
+ if (lws_issue_raw(wsi, wsi->trunc_alloc + wsi->trunc_offset,
+ wsi->trunc_len) < 0) {
+ lwsl_info("%s signalling to close\n", __func__);
+ goto bail_die;
+ }
+ /* leave POLLOUT active either way */
+ goto bail_ok;
+ } else
+ if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE) {
+ wsi->socket_is_permanently_unusable = 1;
+ goto bail_die; /* retry closing now */
+ }
+
+ if (wsi->mode == LWSCM_WSCL_ISSUE_HTTP_BODY)
+ goto user_service;
+
+
+#ifdef LWS_USE_HTTP2
+ /* Priority 2: protocol packets
+ */
+ if (wsi->pps) {
+ lwsl_info("servicing pps %d\n", wsi->pps);
+ switch (wsi->pps) {
+ case LWS_PPS_HTTP2_MY_SETTINGS:
+ case LWS_PPS_HTTP2_ACK_SETTINGS:
+ lws_http2_do_pps_send(lws_get_context(wsi), wsi);
+ break;
+ default:
+ break;
+ }
+ wsi->pps = LWS_PPS_NONE;
+ lws_rx_flow_control(wsi, 1);
+
+ goto bail_ok; /* leave POLLOUT active */
+ }
+#endif
+
+#ifdef LWS_WITH_CGI
+ if (wsi->cgi) {
+ /* also one shot */
+ if (pollfd)
+ if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
+ lwsl_info("failed at set pollfd\n");
+ return 1;
+ }
+ goto user_service_go_again;
+ }
+#endif
+
+ /* Priority 3: pending control packets (pong or close)
+ *
+ * 3a: close notification packet requested from close api
+ */
+
+ if (wsi->state == LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION) {
+ lwsl_debug("sending close packet\n");
+ wsi->waiting_to_send_close_frame = 0;
+ n = lws_write(wsi, &wsi->u.ws.ping_payload_buf[LWS_PRE],
+ wsi->u.ws.close_in_ping_buffer_len,
+ LWS_WRITE_CLOSE);
+ if (n >= 0) {
+ wsi->state = LWSS_AWAITING_CLOSE_ACK;
+ lws_set_timeout(wsi, PENDING_TIMEOUT_CLOSE_ACK, 1);
+ lwsl_debug("sent close indication, awaiting ack\n");
+
+ goto bail_ok;
+ }
+
+ goto bail_die;
+ }
+
+ /* else, the send failed and we should just hang up */
+
+ if ((wsi->state == LWSS_ESTABLISHED &&
+ wsi->u.ws.ping_pending_flag) ||
+ (wsi->state == LWSS_RETURNED_CLOSE_ALREADY &&
+ wsi->u.ws.payload_is_close)) {
+
+ if (wsi->u.ws.payload_is_close)
+ write_type = LWS_WRITE_CLOSE;
+
+ n = lws_write(wsi, &wsi->u.ws.ping_payload_buf[LWS_PRE],
+ wsi->u.ws.ping_payload_len, write_type);
+ if (n < 0)
+ goto bail_die;
+
+ /* well he is sent, mark him done */
+ wsi->u.ws.ping_pending_flag = 0;
+ if (wsi->u.ws.payload_is_close)
+ /* oh... a close frame was it... then we are done */
+ goto bail_die;
+
+ /* otherwise for PING, leave POLLOUT active either way */
+ goto bail_ok;
+ }
+
+ if (wsi->state == LWSS_ESTABLISHED &&
+ !wsi->socket_is_permanently_unusable &&
+ wsi->u.ws.send_check_ping) {
+
+ lwsl_info("issuing ping on wsi %p\n", wsi);
+ wsi->u.ws.send_check_ping = 0;
+ n = lws_write(wsi, &wsi->u.ws.ping_payload_buf[LWS_PRE],
+ 0, LWS_WRITE_PING);
+ if (n < 0)
+ goto bail_die;
+
+ /*
+ * we apparently were able to send the PING in a reasonable time
+ * now reset the clock on our peer to be able to send the
+ * PONG in a reasonable time.
+ */
+
+ lws_set_timeout(wsi, PENDING_TIMEOUT_WS_PONG_CHECK_GET_PONG,
+ wsi->context->timeout_secs);
+
+ goto bail_ok;
+ }
+
+ /* Priority 4: if we are closing, not allowed to send more data frags
+ * which means user callback or tx ext flush banned now
+ */
+ if (wsi->state == LWSS_RETURNED_CLOSE_ALREADY)
+ goto user_service;
+
+ /* Priority 5: Tx path extension with more to send
+ *
+ * These are handled as new fragments each time around
+ * So while we must block new writeable callback to enforce
+ * payload ordering, but since they are always complete
+ * fragments control packets can interleave OK.
+ */
+ if (wsi->state == LWSS_ESTABLISHED && wsi->u.ws.tx_draining_ext) {
+ lwsl_ext("SERVICING TX EXT DRAINING\n");
+ if (lws_write(wsi, NULL, 0, LWS_WRITE_CONTINUATION) < 0)
+ goto bail_die;
+ /* leave POLLOUT active */
+ goto bail_ok;
+ }
+
+ /* Priority 6: user can get the callback
+ */
+ m = lws_ext_cb_active(wsi, LWS_EXT_CB_IS_WRITEABLE, NULL, 0);
+ if (m)
+ goto bail_die;
+#ifndef LWS_NO_EXTENSIONS
+ if (!wsi->extension_data_pending)
+ goto user_service;
+#endif
+ /*
+ * check in on the active extensions, see if they
+ * had pending stuff to spill... they need to get the
+ * first look-in otherwise sequence will be disordered
+ *
+ * NULL, zero-length eff_buf means just spill pending
+ */
+
+ ret = 1;
+ if (wsi->mode == LWSCM_RAW || wsi->mode == LWSCM_RAW_FILEDESC)
+ ret = 0;
+ while (ret == 1) {
+
+ /* default to nobody has more to spill */
+
+ ret = 0;
+ eff_buf.token = NULL;
+ eff_buf.token_len = 0;
+
+ /* give every extension a chance to spill */
+
+ m = lws_ext_cb_active(wsi,
+ LWS_EXT_CB_PACKET_TX_PRESEND,
+ &eff_buf, 0);
+ if (m < 0) {
+ lwsl_err("ext reports fatal error\n");
+ goto bail_die;
+ }
+ if (m)
+ /*
+ * at least one extension told us he has more
+ * to spill, so we will go around again after
+ */
+ ret = 1;
+
+ /* assuming they gave us something to send, send it */
+
+ if (eff_buf.token_len) {
+ n = lws_issue_raw(wsi, (unsigned char *)eff_buf.token,
+ eff_buf.token_len);
+ if (n < 0) {
+ lwsl_info("closing from POLLOUT spill\n");
+ goto bail_die;
+ }
+ /*
+ * Keep amount spilled small to minimize chance of this
+ */
+ if (n != eff_buf.token_len) {
+ lwsl_err("Unable to spill ext %d vs %d\n",
+ eff_buf.token_len, n);
+ goto bail_die;
+ }
+ } else
+ continue;
+
+ /* no extension has more to spill */
+
+ if (!ret)
+ continue;
+
+ /*
+ * There's more to spill from an extension, but we just sent
+ * something... did that leave the pipe choked?
+ */
+
+ if (!lws_send_pipe_choked(wsi))
+ /* no we could add more */
+ continue;
+
+ lwsl_info("choked in POLLOUT service\n");
+
+ /*
+ * Yes, he's choked. Leave the POLLOUT masked on so we will
+ * come back here when he is unchoked. Don't call the user
+ * callback to enforce ordering of spilling, he'll get called
+ * when we come back here and there's nothing more to spill.
+ */
+
+ goto bail_ok;
+ }
+#ifndef LWS_NO_EXTENSIONS
+ wsi->extension_data_pending = 0;
+#endif
+user_service:
+ /* one shot */
+
+ if (wsi->parent_carries_io) {
+ wsi->handling_pollout = 0;
+ wsi->leave_pollout_active = 0;
+
+ return lws_calllback_as_writeable(wsi);
+ }
+
+ if (pollfd) {
+ int eff = wsi->leave_pollout_active;
+
+ if (!eff)
+ if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
+ lwsl_info("failed at set pollfd\n");
+ goto bail_die;
+ }
+
+ wsi->handling_pollout = 0;
+
+ /* cannot get leave_pollout_active set after the above */
+ if (!eff && wsi->leave_pollout_active)
+ /* got set inbetween sampling eff and clearing
+ * handling_pollout, force POLLOUT on */
+ lws_calllback_as_writeable(wsi);
+
+ wsi->leave_pollout_active = 0;
+ }
+
+ if (wsi->mode != LWSCM_WSCL_ISSUE_HTTP_BODY &&
+ !wsi->hdr_parsing_completed)
+ goto bail_ok;
+
+
+#ifdef LWS_WITH_CGI
+user_service_go_again:
+#endif
+
+#ifdef LWS_USE_HTTP2
+ /*
+ * we are the 'network wsi' for potentially many muxed child wsi with
+ * no network connection of their own, who have to use us for all their
+ * network actions. So we use a round-robin scheme to share out the
+ * POLLOUT notifications to our children.
+ *
+ * But because any child could exhaust the socket's ability to take
+ * writes, we can only let one child get notified each time.
+ *
+ * In addition children may be closed / deleted / added between POLLOUT
+ * notifications, so we can't hold pointers
+ */
+
+ if (wsi->mode != LWSCM_HTTP2_SERVING) {
+ lwsl_info("%s: non http2\n", __func__);
+ goto notify;
+ }
+
+ wsi->u.http2.requested_POLLOUT = 0;
+ if (!wsi->u.http2.initialized) {
+ lwsl_info("pollout on uninitialized http2 conn\n");
+ goto bail_ok;
+ }
+
+ lwsl_info("%s: doing children\n", __func__);
+
+ wsi2 = wsi;
+ do {
+ wsi2 = wsi2->u.http2.next_child_wsi;
+ lwsl_info("%s: child %p\n", __func__, wsi2);
+ if (!wsi2)
+ continue;
+ if (!wsi2->u.http2.requested_POLLOUT)
+ continue;
+ wsi2->u.http2.requested_POLLOUT = 0;
+ if (lws_calllback_as_writeable(wsi2)) {
+ lwsl_debug("Closing POLLOUT child\n");
+ lws_close_free_wsi(wsi2, LWS_CLOSE_STATUS_NOSTATUS);
+ }
+ wsi2 = wsi;
+ } while (wsi2 != NULL && !lws_send_pipe_choked(wsi));
+
+ lwsl_info("%s: completed\n", __func__);
+
+ goto bail_ok;
+notify:
+#endif
+ wsi->handling_pollout = 0;
+ wsi->leave_pollout_active = 0;
+
+ return lws_calllback_as_writeable(wsi);
+
+ /*
+ * since these don't disable the POLLOUT, they are always doing the
+ * right thing for leave_pollout_active whether it was set or not.
+ */
+
+bail_ok:
+ wsi->handling_pollout = 0;
+ wsi->leave_pollout_active = 0;
+
+ return 0;
+
+bail_die:
+ wsi->handling_pollout = 0;
+ wsi->leave_pollout_active = 0;
+
+ return -1;
+}
+
+int
+lws_service_timeout_check(struct lws *wsi, unsigned int sec)
+{
+//#if LWS_POSIX
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ int n = 0;
+//#endif
+
+ (void)n;
+
+ /*
+ * if extensions want in on it (eg, we are a mux parent)
+ * give them a chance to service child timeouts
+ */
+ if (lws_ext_cb_active(wsi, LWS_EXT_CB_1HZ, NULL, sec) < 0)
+ return 0;
+
+ if (!wsi->pending_timeout)
+ return 0;
+
+ /*
+ * if we went beyond the allowed time, kill the
+ * connection
+ */
+ if ((time_t)sec > wsi->pending_timeout_limit) {
+//#if LWS_POSIX
+ if (wsi->desc.sockfd != LWS_SOCK_INVALID && wsi->position_in_fds_table >= 0)
+ n = pt->fds[wsi->position_in_fds_table].events;
+
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_TIMEOUTS, 1);
+
+ /* no need to log normal idle keepalive timeout */
+ if (wsi->pending_timeout != PENDING_TIMEOUT_HTTP_KEEPALIVE_IDLE)
+ lwsl_notice("wsi %p: TIMEDOUT WAITING on %d (did hdr %d, ah %p, wl %d, pfd events %d) %llu vs %llu\n",
+ (void *)wsi, wsi->pending_timeout,
+ wsi->hdr_parsing_completed, wsi->u.hdr.ah,
+ pt->ah_wait_list_length, n, (unsigned long long)sec, (unsigned long long)wsi->pending_timeout_limit);
+//#endif
+ /*
+ * Since he failed a timeout, he already had a chance to do
+ * something and was unable to... that includes situations like
+ * half closed connections. So process this "failed timeout"
+ * close as a violent death and don't try to do protocol
+ * cleanup like flush partials.
+ */
+ wsi->socket_is_permanently_unusable = 1;
+ if (wsi->mode == LWSCM_WSCL_WAITING_SSL)
+ wsi->vhost->protocols[0].callback(wsi,
+ LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
+ wsi->user_space, (void *)"Timed out waiting SSL", 21);
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+
+ return 1;
+ }
+
+ return 0;
+}
+
+int lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len)
+{
+ /* his RX is flowcontrolled, don't send remaining now */
+ if (wsi->rxflow_buffer) {
+ /* rxflow while we were spilling prev rxflow */
+ lwsl_info("stalling in existing rxflow buf\n");
+ return 1;
+ }
+
+ /* a new rxflow, buffer it and warn caller */
+ lwsl_info("new rxflow input buffer len %d\n", len - n);
+ wsi->rxflow_buffer = lws_malloc(len - n);
+ if (!wsi->rxflow_buffer)
+ return -1;
+ wsi->rxflow_len = len - n;
+ wsi->rxflow_pos = 0;
+ memcpy(wsi->rxflow_buffer, buf + n, len - n);
+
+ return 0;
+}
+
+/* this is used by the platform service code to stop us waiting for network
+ * activity in poll() when we have something that already needs service
+ */
+
+LWS_VISIBLE LWS_EXTERN int
+lws_service_adjust_timeout(struct lws_context *context, int timeout_ms, int tsi)
+{
+ struct lws_context_per_thread *pt = &context->pt[tsi];
+ int n;
+
+ /* Figure out if we really want to wait in poll()
+ * We only need to wait if really nothing already to do and we have
+ * to wait for something from network
+ */
+
+ /* 1) if we know we are draining rx ext, do not wait in poll */
+ if (pt->rx_draining_ext_list)
+ return 0;
+
+#ifdef LWS_OPENSSL_SUPPORT
+ /* 2) if we know we have non-network pending data, do not wait in poll */
+ if (lws_ssl_anybody_has_buffered_read_tsi(context, tsi)) {
+ lwsl_info("ssl buffered read\n");
+ return 0;
+ }
+#endif
+
+ /* 3) if any ah has pending rx, do not wait in poll */
+ for (n = 0; n < context->max_http_header_pool; n++)
+ if (pt->ah_pool[n].rxpos != pt->ah_pool[n].rxlen) {
+ /* any ah with pending rx must be attached to someone */
+ if (!pt->ah_pool[n].wsi) {
+ lwsl_err("%s: assert: no wsi attached to ah\n", __func__);
+ assert(0);
+ }
+ return 0;
+ }
+
+ return timeout_ms;
+}
+
+/*
+ * guys that need POLLIN service again without waiting for network action
+ * can force POLLIN here if not flowcontrolled, so they will get service.
+ *
+ * Return nonzero if anybody got their POLLIN faked
+ */
+int
+lws_service_flag_pending(struct lws_context *context, int tsi)
+{
+ struct lws_context_per_thread *pt = &context->pt[tsi];
+#ifdef LWS_OPENSSL_SUPPORT
+ struct lws *wsi_next;
+#endif
+ struct lws *wsi;
+ int forced = 0;
+ int n;
+
+ /* POLLIN faking */
+
+ /*
+ * 1) For all guys with already-available ext data to drain, if they are
+ * not flowcontrolled, fake their POLLIN status
+ */
+ wsi = pt->rx_draining_ext_list;
+ while (wsi) {
+ pt->fds[wsi->position_in_fds_table].revents |=
+ pt->fds[wsi->position_in_fds_table].events & LWS_POLLIN;
+ if (pt->fds[wsi->position_in_fds_table].revents & LWS_POLLIN) {
+ forced = 1;
+ break;
+ }
+ wsi = wsi->u.ws.rx_draining_ext_list;
+ }
+
+#ifdef LWS_OPENSSL_SUPPORT
+ /*
+ * 2) For all guys with buffered SSL read data already saved up, if they
+ * are not flowcontrolled, fake their POLLIN status so they'll get
+ * service to use up the buffered incoming data, even though their
+ * network socket may have nothing
+ */
+ wsi = pt->pending_read_list;
+ while (wsi) {
+ wsi_next = wsi->pending_read_list_next;
+ pt->fds[wsi->position_in_fds_table].revents |=
+ pt->fds[wsi->position_in_fds_table].events & LWS_POLLIN;
+ if (pt->fds[wsi->position_in_fds_table].revents & LWS_POLLIN) {
+ forced = 1;
+ /*
+ * he's going to get serviced now, take him off the
+ * list of guys with buffered SSL. If he still has some
+ * at the end of the service, he'll get put back on the
+ * list then.
+ */
+ lws_ssl_remove_wsi_from_buffered_list(wsi);
+ }
+
+ wsi = wsi_next;
+ }
+#endif
+ /*
+ * 3) For any wsi who have an ah with pending RX who did not
+ * complete their current headers, and are not flowcontrolled,
+ * fake their POLLIN status so they will be able to drain the
+ * rx buffered in the ah
+ */
+ for (n = 0; n < context->max_http_header_pool; n++)
+ if (pt->ah_pool[n].rxpos != pt->ah_pool[n].rxlen &&
+ !pt->ah_pool[n].wsi->hdr_parsing_completed) {
+ pt->fds[pt->ah_pool[n].wsi->position_in_fds_table].revents |=
+ pt->fds[pt->ah_pool[n].wsi->position_in_fds_table].events &
+ LWS_POLLIN;
+ if (pt->fds[pt->ah_pool[n].wsi->position_in_fds_table].revents &
+ LWS_POLLIN)
+ forced = 1;
+ }
+
+ return forced;
+}
+
+#ifndef LWS_NO_CLIENT
+
+LWS_VISIBLE int
+lws_http_client_read(struct lws *wsi, char **buf, int *len)
+{
+ int rlen, n;
+
+ rlen = lws_ssl_capable_read(wsi, (unsigned char *)*buf, *len);
+ *len = 0;
+
+ /* allow the source to signal he has data again next time */
+ lws_change_pollfd(wsi, 0, LWS_POLLIN);
+
+ if (rlen == LWS_SSL_CAPABLE_ERROR) {
+ lwsl_notice("%s: SSL capable error\n", __func__);
+ return -1;
+ }
+
+ if (rlen == 0)
+ return -1;
+
+ if (rlen < 0)
+ return 0;
+
+ *len = rlen;
+ wsi->client_rx_avail = 0;
+
+ /*
+ * server may insist on transfer-encoding: chunked,
+ * so http client must deal with it
+ */
+spin_chunks:
+ while (wsi->chunked && (wsi->chunk_parser != ELCP_CONTENT) && *len) {
+ switch (wsi->chunk_parser) {
+ case ELCP_HEX:
+ if ((*buf)[0] == '\x0d') {
+ wsi->chunk_parser = ELCP_CR;
+ break;
+ }
+ n = char_to_hex((*buf)[0]);
+ if (n < 0) {
+ lwsl_debug("chunking failure\n");
+ return -1;
+ }
+ wsi->chunk_remaining <<= 4;
+ wsi->chunk_remaining |= n;
+ break;
+ case ELCP_CR:
+ if ((*buf)[0] != '\x0a') {
+ lwsl_debug("chunking failure\n");
+ return -1;
+ }
+ wsi->chunk_parser = ELCP_CONTENT;
+ lwsl_info("chunk %d\n", wsi->chunk_remaining);
+ if (wsi->chunk_remaining)
+ break;
+ lwsl_info("final chunk\n");
+ goto completed;
+
+ case ELCP_CONTENT:
+ break;
+
+ case ELCP_POST_CR:
+ if ((*buf)[0] != '\x0d') {
+ lwsl_debug("chunking failure\n");
+
+ return -1;
+ }
+
+ wsi->chunk_parser = ELCP_POST_LF;
+ break;
+
+ case ELCP_POST_LF:
+ if ((*buf)[0] != '\x0a')
+ return -1;
+
+ wsi->chunk_parser = ELCP_HEX;
+ wsi->chunk_remaining = 0;
+ break;
+ }
+ (*buf)++;
+ (*len)--;
+ }
+
+ if (wsi->chunked && !wsi->chunk_remaining)
+ return 0;
+
+ if (wsi->u.http.content_remain &&
+ wsi->u.http.content_remain < *len)
+ n = (int)wsi->u.http.content_remain;
+ else
+ n = *len;
+
+ if (wsi->chunked && wsi->chunk_remaining &&
+ wsi->chunk_remaining < n)
+ n = wsi->chunk_remaining;
+
+#ifdef LWS_WITH_HTTP_PROXY
+ /* hubbub */
+ if (wsi->perform_rewrite)
+ lws_rewrite_parse(wsi->rw, (unsigned char *)*buf, n);
+ else
+#endif
+ if (user_callback_handle_rxflow(wsi->protocol->callback,
+ wsi, LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ,
+ wsi->user_space, *buf, n)) {
+ lwsl_debug("%s: LWS_CALLBACK_RECEIVE_CLIENT_HTTP_READ returned -1\n", __func__);
+
+ return -1;
+ }
+
+ if (wsi->chunked && wsi->chunk_remaining) {
+ (*buf) += n;
+ wsi->chunk_remaining -= n;
+ *len -= n;
+ }
+
+ if (wsi->chunked && !wsi->chunk_remaining)
+ wsi->chunk_parser = ELCP_POST_CR;
+
+ if (wsi->chunked && *len)
+ goto spin_chunks;
+
+ if (wsi->chunked)
+ return 0;
+
+ /* if we know the content length, decrement the content remaining */
+ if (wsi->u.http.content_length > 0)
+ wsi->u.http.content_remain -= n;
+
+ if (wsi->u.http.content_remain || !wsi->u.http.content_length)
+ return 0;
+
+completed:
+ if (user_callback_handle_rxflow(wsi->protocol->callback,
+ wsi, LWS_CALLBACK_COMPLETED_CLIENT_HTTP,
+ wsi->user_space, NULL, 0)) {
+ lwsl_debug("Completed call returned -1\n");
+ return -1;
+ }
+
+ if (lws_http_transaction_completed_client(wsi)) {
+ lwsl_notice("%s: transaction completed says -1\n", __func__);
+ return -1;
+ }
+
+ return 0;
+}
+#endif
+
+static int
+lws_is_ws_with_ext(struct lws *wsi)
+{
+#if defined(LWS_NO_EXTENSIONS)
+ return 0;
+#else
+ return wsi->state == LWSS_ESTABLISHED &&
+ !!wsi->count_act_ext;
+#endif
+}
+
+LWS_VISIBLE int
+lws_service_fd_tsi(struct lws_context *context, struct lws_pollfd *pollfd, int tsi)
+{
+ struct lws_context_per_thread *pt = &context->pt[tsi];
+ lws_sockfd_type our_fd = 0, tmp_fd;
+ struct lws_tokens eff_buf;
+ unsigned int pending = 0;
+ struct lws *wsi, *wsi1;
+ char draining_flow = 0;
+ int timed_out = 0;
+ time_t now;
+ int n = 0, m;
+ int more;
+
+ if (!context->protocol_init_done)
+ lws_protocol_init(context);
+
+ time(&now);
+
+ /*
+ * handle case that system time was uninitialized when lws started
+ * at boot, and got initialized a little later
+ */
+ if (context->time_up < 1464083026 && now > 1464083026)
+ context->time_up = now;
+
+ /* TODO: if using libev, we should probably use timeout watchers... */
+ if (context->last_timeout_check_s != now) {
+ context->last_timeout_check_s = now;
+
+#if defined(LWS_WITH_STATS)
+ if (!tsi && now - context->last_dump > 10) {
+ lws_stats_log_dump(context);
+ context->last_dump = now;
+ }
+#endif
+
+ lws_plat_service_periodic(context);
+
+ lws_check_deferred_free(context, 0);
+
+ /* retire unused deprecated context */
+#if !defined(LWS_PLAT_OPTEE) && !defined(LWS_WITH_ESP32)
+#if LWS_POSIX && !defined(_WIN32)
+ if (context->deprecated && !context->count_wsi_allocated) {
+ lwsl_notice("%s: ending deprecated context\n", __func__);
+ kill(getpid(), SIGINT);
+ return 0;
+ }
+#endif
+#endif
+ /* global timeout check once per second */
+
+ if (pollfd)
+ our_fd = pollfd->fd;
+
+ wsi = context->pt[tsi].timeout_list;
+ while (wsi) {
+ /* we have to take copies, because he may be deleted */
+ wsi1 = wsi->timeout_list;
+ tmp_fd = wsi->desc.sockfd;
+ if (lws_service_timeout_check(wsi, (unsigned int)now)) {
+ /* he did time out... */
+ if (tmp_fd == our_fd)
+ /* it was the guy we came to service! */
+ timed_out = 1;
+ /* he's gone, no need to mark as handled */
+ }
+ wsi = wsi1;
+ }
+#ifdef LWS_WITH_CGI
+ lws_cgi_kill_terminated(pt);
+#endif
+#if 0
+ {
+ char s[300], *p = s;
+
+ for (n = 0; n < context->count_threads; n++)
+ p += sprintf(p, " %7lu (%5d), ",
+ context->pt[n].count_conns,
+ context->pt[n].fds_count);
+
+ lwsl_notice("load: %s\n", s);
+ }
+#endif
+ }
+
+ /*
+ * at intervals, check for ws connections needing ping-pong checks
+ */
+
+ if (context->ws_ping_pong_interval &&
+ context->last_ws_ping_pong_check_s < now + 10) {
+ struct lws_vhost *vh = context->vhost_list;
+ context->last_ws_ping_pong_check_s = now;
+
+ while (vh) {
+ for (n = 0; n < vh->count_protocols; n++) {
+ wsi = vh->same_vh_protocol_list[n];
+
+ while (wsi) {
+ if (wsi->state == LWSS_ESTABLISHED &&
+ !wsi->socket_is_permanently_unusable &&
+ !wsi->u.ws.send_check_ping &&
+ wsi->u.ws.time_next_ping_check &&
+ wsi->u.ws.time_next_ping_check < now) {
+
+ lwsl_info("requesting ping-pong on wsi %p\n", wsi);
+ wsi->u.ws.send_check_ping = 1;
+ lws_set_timeout(wsi, PENDING_TIMEOUT_WS_PONG_CHECK_SEND_PING,
+ context->timeout_secs);
+ lws_callback_on_writable(wsi);
+ wsi->u.ws.time_next_ping_check = now +
+ wsi->context->ws_ping_pong_interval;
+ }
+ wsi = wsi->same_vh_protocol_next;
+ }
+ }
+ vh = vh->vhost_next;
+ }
+ }
+
+ /* the socket we came to service timed out, nothing to do */
+ if (timed_out)
+ return 0;
+
+ /* just here for timeout management? */
+ if (!pollfd)
+ return 0;
+
+ /* no, here to service a socket descriptor */
+ wsi = wsi_from_fd(context, pollfd->fd);
+ if (!wsi)
+ /* not lws connection ... leave revents alone and return */
+ return 0;
+
+ /*
+ * so that caller can tell we handled, past here we need to
+ * zero down pollfd->revents after handling
+ */
+
+#if LWS_POSIX
+ /* handle session socket closed */
+
+ if ((!(pollfd->revents & pollfd->events & LWS_POLLIN)) &&
+ (pollfd->revents & LWS_POLLHUP)) {
+ wsi->socket_is_permanently_unusable = 1;
+ lwsl_debug("Session Socket %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ goto close_and_handled;
+ }
+
+#ifdef _WIN32
+ if (pollfd->revents & LWS_POLLOUT)
+ wsi->sock_send_blocking = FALSE;
+#endif
+
+#endif
+
+// lwsl_debug("fd=%d, revents=%d, mode=%d, state=%d\n", pollfd->fd, pollfd->revents, (int)wsi->mode, (int)wsi->state);
+ if (pollfd->revents & LWS_POLLHUP) {
+ lwsl_debug("pollhup\n");
+ wsi->socket_is_permanently_unusable = 1;
+ goto close_and_handled;
+ }
+
+
+#ifdef LWS_OPENSSL_SUPPORT
+ if ((wsi->state == LWSS_SHUTDOWN) && lws_is_ssl(wsi) && wsi->ssl)
+ {
+ n = SSL_shutdown(wsi->ssl);
+ lwsl_debug("SSL_shutdown=%d for fd %d\n", n, wsi->desc.sockfd);
+ if (n == 1)
+ {
+ n = shutdown(wsi->desc.sockfd, SHUT_WR);
+ goto close_and_handled;
+ }
+ else if (n == 0)
+ {
+ lws_change_pollfd(wsi, LWS_POLLOUT, LWS_POLLIN);
+ n = 0;
+ goto handled;
+ }
+ else /* n < 0 */
+ {
+ int shutdown_error = SSL_get_error(wsi->ssl, n);
+ lwsl_debug("SSL_shutdown returned %d, SSL_get_error: %d\n", n, shutdown_error);
+ if (shutdown_error == SSL_ERROR_WANT_READ) {
+ lws_change_pollfd(wsi, LWS_POLLOUT, LWS_POLLIN);
+ n = 0;
+ goto handled;
+ } else if (shutdown_error == SSL_ERROR_WANT_WRITE) {
+ lws_change_pollfd(wsi, LWS_POLLOUT, LWS_POLLOUT);
+ n = 0;
+ goto handled;
+ }
+
+ // actual error occurred, just close the connection
+ n = shutdown(wsi->desc.sockfd, SHUT_WR);
+ goto close_and_handled;
+ }
+ }
+#endif
+
+ /* okay, what we came here to do... */
+
+ switch (wsi->mode) {
+ case LWSCM_HTTP_SERVING:
+ case LWSCM_HTTP_CLIENT:
+ case LWSCM_HTTP_SERVING_ACCEPTED:
+ case LWSCM_SERVER_LISTENER:
+ case LWSCM_SSL_ACK_PENDING:
+ case LWSCM_SSL_ACK_PENDING_RAW:
+ if (wsi->state == LWSS_CLIENT_HTTP_ESTABLISHED)
+ goto handled;
+
+#ifdef LWS_WITH_CGI
+ if (wsi->cgi && (pollfd->revents & LWS_POLLOUT)) {
+ n = lws_handle_POLLOUT_event(wsi, pollfd);
+ if (n)
+ goto close_and_handled;
+ goto handled;
+ }
+#endif
+ /* fallthru */
+ case LWSCM_RAW:
+ n = lws_server_socket_service(context, wsi, pollfd);
+ if (n) /* closed by above */
+ return 1;
+ goto handled;
+
+ case LWSCM_RAW_FILEDESC:
+
+ if (pollfd->revents & LWS_POLLOUT) {
+ n = lws_calllback_as_writeable(wsi);
+ if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
+ lwsl_info("failed at set pollfd\n");
+ return 1;
+ }
+ if (n)
+ goto close_and_handled;
+ }
+ n = LWS_CALLBACK_RAW_RX;
+ if (wsi->mode == LWSCM_RAW_FILEDESC)
+ n = LWS_CALLBACK_RAW_RX_FILE;
+
+ if (pollfd->revents & LWS_POLLIN) {
+ if (user_callback_handle_rxflow(
+ wsi->protocol->callback,
+ wsi, n,
+ wsi->user_space, NULL, 0)) {
+ lwsl_debug("raw rx callback closed it\n");
+ goto close_and_handled;
+ }
+ }
+
+ if (pollfd->revents & LWS_POLLHUP)
+ goto close_and_handled;
+ n = 0;
+ goto handled;
+
+ case LWSCM_WS_SERVING:
+ case LWSCM_WS_CLIENT:
+ case LWSCM_HTTP2_SERVING:
+ case LWSCM_HTTP_CLIENT_ACCEPTED:
+
+ /* 1: something requested a callback when it was OK to write */
+
+ if (wsi->state == LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION)
+ lwsl_notice("xxx\n");
+
+ if ((pollfd->revents & LWS_POLLOUT) &&
+ ((wsi->state == LWSS_ESTABLISHED ||
+ wsi->state == LWSS_HTTP2_ESTABLISHED ||
+ wsi->state == LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS ||
+ wsi->state == LWSS_RETURNED_CLOSE_ALREADY ||
+ wsi->state == LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION ||
+ wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE)) &&
+ lws_handle_POLLOUT_event(wsi, pollfd)) {
+ if (wsi->state == LWSS_RETURNED_CLOSE_ALREADY)
+ wsi->state = LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE;
+ lwsl_info("lws_service_fd: closing\n");
+ goto close_and_handled;
+ }
+
+ if (wsi->state == LWSS_RETURNED_CLOSE_ALREADY ||
+ wsi->state == LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION ||
+ wsi->state == LWSS_AWAITING_CLOSE_ACK) {
+ /*
+ * we stopped caring about anything except control
+ * packets. Force flow control off, defeat tx
+ * draining.
+ */
+ lws_rx_flow_control(wsi, 1);
+ wsi->u.ws.tx_draining_ext = 0;
+ }
+
+ if (wsi->u.ws.tx_draining_ext)
+ /* we cannot deal with new RX until the TX ext
+ * path has been drained. It's because new
+ * rx will, eg, crap on the wsi rx buf that
+ * may be needed to retain state.
+ *
+ * TX ext drain path MUST go through event loop
+ * to avoid blocking.
+ */
+ break;
+
+ if (!(wsi->rxflow_change_to & LWS_RXFLOW_ALLOW))
+ /* We cannot deal with any kind of new RX
+ * because we are RX-flowcontrolled.
+ */
+ break;
+
+ /* 2: RX Extension needs to be drained
+ */
+
+ if (wsi->state == LWSS_ESTABLISHED &&
+ wsi->u.ws.rx_draining_ext) {
+
+ lwsl_ext("%s: RX EXT DRAINING: Service\n", __func__);
+#ifndef LWS_NO_CLIENT
+ if (wsi->mode == LWSCM_WS_CLIENT) {
+ n = lws_client_rx_sm(wsi, 0);
+ if (n < 0)
+ /* we closed wsi */
+ n = 0;
+ } else
+#endif
+ n = lws_rx_sm(wsi, 0);
+
+ goto handled;
+ }
+
+ if (wsi->u.ws.rx_draining_ext)
+ /*
+ * We have RX EXT content to drain, but can't do it
+ * right now. That means we cannot do anything lower
+ * priority either.
+ */
+ break;
+
+ /* 3: RX Flowcontrol buffer needs to be drained
+ */
+
+ if (wsi->rxflow_buffer) {
+ lwsl_info("draining rxflow (len %d)\n",
+ wsi->rxflow_len - wsi->rxflow_pos
+ );
+ /* well, drain it */
+ eff_buf.token = (char *)wsi->rxflow_buffer +
+ wsi->rxflow_pos;
+ eff_buf.token_len = wsi->rxflow_len - wsi->rxflow_pos;
+ draining_flow = 1;
+ goto drain;
+ }
+
+ /* 4: any incoming (or ah-stashed incoming rx) data ready?
+ * notice if rx flow going off raced poll(), rx flow wins
+ */
+
+ if (!(pollfd->revents & pollfd->events & LWS_POLLIN))
+ break;
+
+read:
+ if (wsi->u.hdr.ah) {
+ lwsl_info("%s: %p: inherited ah rx\n", __func__, wsi);
+ eff_buf.token_len = wsi->u.hdr.ah->rxlen -
+ wsi->u.hdr.ah->rxpos;
+ eff_buf.token = (char *)wsi->u.hdr.ah->rx +
+ wsi->u.hdr.ah->rxpos;
+ } else {
+ if (wsi->mode != LWSCM_HTTP_CLIENT_ACCEPTED) {
+ /*
+ * extension may not consume everything (eg, pmd may be constrained
+ * as to what it can output...) has to go in per-wsi rx buf area.
+ * Otherwise in large temp serv_buf area.
+ */
+ eff_buf.token = (char *)pt->serv_buf;
+ if (lws_is_ws_with_ext(wsi)) {
+ eff_buf.token_len = wsi->u.ws.rx_ubuf_alloc;
+ } else {
+ eff_buf.token_len = context->pt_serv_buf_size;
+ }
+
+ if ((unsigned int)eff_buf.token_len > context->pt_serv_buf_size)
+ eff_buf.token_len = context->pt_serv_buf_size;
+
+ eff_buf.token_len = lws_ssl_capable_read(wsi,
+ (unsigned char *)eff_buf.token, pending ? pending :
+ eff_buf.token_len);
+ switch (eff_buf.token_len) {
+ case 0:
+ lwsl_info("%s: zero length read\n", __func__);
+ goto close_and_handled;
+ case LWS_SSL_CAPABLE_MORE_SERVICE:
+ lwsl_info("SSL Capable more service\n");
+ n = 0;
+ goto handled;
+ case LWS_SSL_CAPABLE_ERROR:
+ lwsl_info("Closing when error\n");
+ goto close_and_handled;
+ }
+ // lwsl_notice("Actual RX %d\n", eff_buf.token_len);
+ }
+ }
+
+drain:
+#ifndef LWS_NO_CLIENT
+ if (wsi->mode == LWSCM_HTTP_CLIENT_ACCEPTED &&
+ !wsi->told_user_closed) {
+
+ /*
+ * In SSL mode we get POLLIN notification about
+ * encrypted data in.
+ *
+ * But that is not necessarily related to decrypted
+ * data out becoming available; in may need to perform
+ * other in or out before that happens.
+ *
+ * simply mark ourselves as having readable data
+ * and turn off our POLLIN
+ */
+ wsi->client_rx_avail = 1;
+ lws_change_pollfd(wsi, LWS_POLLIN, 0);
+
+ /* let user code know, he'll usually ask for writeable
+ * callback and drain / re-enable it there
+ */
+ if (user_callback_handle_rxflow(
+ wsi->protocol->callback,
+ wsi, LWS_CALLBACK_RECEIVE_CLIENT_HTTP,
+ wsi->user_space, NULL, 0)) {
+ lwsl_notice("LWS_CALLBACK_RECEIVE_CLIENT_HTTP closed it\n");
+ goto close_and_handled;
+ }
+
+ n = 0;
+ goto handled;
+ }
+#endif
+ /*
+ * give any active extensions a chance to munge the buffer
+ * before parse. We pass in a pointer to an lws_tokens struct
+ * prepared with the default buffer and content length that's in
+ * there. Rather than rewrite the default buffer, extensions
+ * that expect to grow the buffer can adapt .token to
+ * point to their own per-connection buffer in the extension
+ * user allocation. By default with no extensions or no
+ * extension callback handling, just the normal input buffer is
+ * used then so it is efficient.
+ */
+ do {
+ more = 0;
+
+ m = lws_ext_cb_active(wsi, LWS_EXT_CB_PACKET_RX_PREPARSE,
+ &eff_buf, 0);
+ if (m < 0)
+ goto close_and_handled;
+ if (m)
+ more = 1;
+
+ /* service incoming data */
+
+ if (eff_buf.token_len) {
+ /*
+ * if draining from rxflow buffer, not
+ * critical to track what was used since at the
+ * use it bumps wsi->rxflow_pos. If we come
+ * around again it will pick up from where it
+ * left off.
+ */
+ // lwsl_notice("doing lws_read from pt->serv_buf %p %p for len %d\n", pt->serv_buf, eff_buf.token, (int)eff_buf.token_len);
+
+ n = lws_read(wsi, (unsigned char *)eff_buf.token,
+ eff_buf.token_len);
+ if (n < 0) {
+ /* we closed wsi */
+ n = 0;
+ goto handled;
+ }
+ }
+
+ eff_buf.token = NULL;
+ eff_buf.token_len = 0;
+ } while (more);
+
+ if (wsi->u.hdr.ah) {
+ lwsl_notice("%s: %p: detaching\n",
+ __func__, wsi);
+ lws_header_table_force_to_detachable_state(wsi);
+ /* we can run the normal ah detach flow despite
+ * being in ws union mode, since all union members
+ * start with hdr */
+ lws_header_table_detach(wsi, 0);
+ }
+
+ pending = lws_ssl_pending(wsi);
+ if (pending) {
+ if (lws_is_ws_with_ext(wsi))
+ pending = pending > wsi->u.ws.rx_ubuf_alloc ?
+ wsi->u.ws.rx_ubuf_alloc : pending;
+ else
+ pending = pending > context->pt_serv_buf_size ?
+ context->pt_serv_buf_size : pending;
+ goto read;
+ }
+
+ if (draining_flow && wsi->rxflow_buffer &&
+ wsi->rxflow_pos == wsi->rxflow_len) {
+ lwsl_info("flow buffer: drained\n");
+ lws_free_set_NULL(wsi->rxflow_buffer);
+ /* having drained the rxflow buffer, can rearm POLLIN */
+#ifdef LWS_NO_SERVER
+ n =
+#endif
+ _lws_rx_flow_control(wsi);
+ /* n ignored, needed for NO_SERVER case */
+ }
+
+ break;
+#ifdef LWS_WITH_CGI
+ case LWSCM_CGI: /* we exist to handle a cgi's stdin/out/err data...
+ * do the callback on our master wsi
+ */
+ {
+ struct lws_cgi_args args;
+
+ if (wsi->cgi_channel >= LWS_STDOUT &&
+ !(pollfd->revents & pollfd->events & LWS_POLLIN))
+ break;
+ if (wsi->cgi_channel == LWS_STDIN &&
+ !(pollfd->revents & pollfd->events & LWS_POLLOUT))
+ break;
+
+ if (wsi->cgi_channel == LWS_STDIN)
+ if (lws_change_pollfd(wsi, LWS_POLLOUT, 0)) {
+ lwsl_info("failed at set pollfd\n");
+ return 1;
+ }
+
+ args.ch = wsi->cgi_channel;
+ args.stdwsi = &wsi->parent->cgi->stdwsi[0];
+ args.hdr_state = wsi->hdr_state;
+
+ //lwsl_err("CGI LWS_STDOUT waiting wsi %p mode %d state %d\n",
+ // wsi->parent, wsi->parent->mode, wsi->parent->state);
+
+ if (user_callback_handle_rxflow(
+ wsi->parent->protocol->callback,
+ wsi->parent, LWS_CALLBACK_CGI,
+ wsi->parent->user_space,
+ (void *)&args, 0))
+ return 1;
+
+ break;
+ }
+#endif
+ default:
+#ifdef LWS_NO_CLIENT
+ break;
+#else
+ if ((pollfd->revents & LWS_POLLOUT) &&
+ lws_handle_POLLOUT_event(wsi, pollfd)) {
+ lwsl_debug("POLLOUT event closed it\n");
+ goto close_and_handled;
+ }
+
+ n = lws_client_socket_service(context, wsi, pollfd);
+ if (n)
+ return 1;
+ goto handled;
+#endif
+ }
+
+ n = 0;
+ goto handled;
+
+close_and_handled:
+ lwsl_debug("%p: Close and handled\n", wsi);
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ /*
+ * pollfd may point to something else after the close
+ * due to pollfd swapping scheme on delete on some platforms
+ * we can't clear revents now because it'd be the wrong guy's revents
+ */
+ return 1;
+
+handled:
+ pollfd->revents = 0;
+ return n;
+}
+
+LWS_VISIBLE int
+lws_service_fd(struct lws_context *context, struct lws_pollfd *pollfd)
+{
+ return lws_service_fd_tsi(context, pollfd, 0);
+}
+
+LWS_VISIBLE int
+lws_service(struct lws_context *context, int timeout_ms)
+{
+ return lws_plat_service(context, timeout_ms);
+}
+
+LWS_VISIBLE int
+lws_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
+{
+ return _lws_plat_service_tsi(context, timeout_ms, tsi);
+}
+
--- /dev/null
+<manifest>
+ <request>
+ <domain name="_"/>
+ </request>
+</manifest>
--- /dev/null
+Name: libwebsockets
+Summary: WebSocket Library
+Version: 3.2.0
+Release: 1
+Group: System/Libraries
+License: LGPL-2.1+ OR BSD-3-Clause
+URL: https://github.com/warmcat/libwebsockets
+Source0: %{name}-%{version}.tar.gz
+Requires(post): /sbin/ldconfig
+Requires(postun): /sbin/ldconfig
+BuildRequires: zlib-devel
+BuildRequires: pkgconfig(openssl1.1)
+BuildRequires: openssl1.1
+BuildRequires: cmake
+BuildRequires: pkgconfig(libsystemd-daemon)
+
+%define _optdeveldir /opt/usr/devel/usr/
+
+%description
+C Websockets Server Library
+
+%package devel
+Summary: Development files for %{name}
+Group: Development/Libraries
+Requires: %{name} = %{version}-%{release}
+
+%description devel
+Development files needed for building websocket clients and servers
+
+%prep
+%setup -q -n %{name}-%{version}
+
+%build
+
+%cmake -DLWS_WITH_SSL=On -DLWS_WITHOUT_TESTAPPS=ON -DLWS_WITH_SERVER_STATUS=ON
+
+make %{?jobs:-j%jobs}
+
+%install
+rm -rf %{buildroot}
+
+%make_install
+
+%post -p /sbin/ldconfig
+
+%postun -p /sbin/ldconfig
+
+%files
+%manifest %{name}.manifest
+%defattr(-,root,root,-)
+%{_libdir}/libwebsockets*.so.*
+%license LICENSE
+
+%files devel
+%defattr(-,root,root,-)
+%{_includedir}/libwebsockets.h
+%{_includedir}/lws-plugin-ssh.h
+%{_includedir}/lws_config.h
+%{_includedir}/libwebsockets/*
+%{_libdir}/libwebsockets.so
+%{_libdir}/pkgconfig/*
+%{_libdir}/cmake/*
+++ /dev/null
-; NSIS installer script for libwebsockets
-
-!include "MUI.nsh"
-
-Name "libwebsockets"
-OutFile "libwebsockets-${VERSION}-install.exe"
-
-InstallDir "$PROGRAMFILES\libwebsockets"
-
-;--------------------------------
-; Installer pages
-!insertmacro MUI_PAGE_WELCOME
-!insertmacro MUI_PAGE_COMPONENTS
-!insertmacro MUI_PAGE_DIRECTORY
-!insertmacro MUI_PAGE_INSTFILES
-!insertmacro MUI_PAGE_FINISH
-
-
-;--------------------------------
-; Uninstaller pages
-!insertmacro MUI_UNPAGE_WELCOME
-!insertmacro MUI_UNPAGE_CONFIRM
-!insertmacro MUI_UNPAGE_INSTFILES
-!insertmacro MUI_UNPAGE_FINISH
-
-;--------------------------------
-; Languages
-!insertmacro MUI_LANGUAGE "English"
-
-;--------------------------------
-; Installer sections
-
-Section "Files" SecInstall
- SectionIn RO
- SetOutPath "$INSTDIR"
- File "..\libwebsockets-api-doc.html"
- File "..\LICENSE"
- File "..\README.md"
- File "..\README.build.md"
- File "..\README.coding.md"
- File "..\README.test-apps.md"
- File /nonfatal "..\build\bin\Release\libwebsockets-test-client.exe"
- File /nonfatal "..\build\bin\Release\libwebsockets-test-echo.exe"
- File /nonfatal "..\build\bin\Release\libwebsockets-test-fraggle.exe"
- File /nonfatal "..\build\bin\Release\libwebsockets-test-ping.exe"
- File /nonfatal "..\build\bin\Release\libwebsockets-test-server.exe"
- File /nonfatal "..\build\bin\Release\libwebsockets-test-server-extpoll.exe"
- File /nonfatal "..\build\bin\Release\websockets.dll"
- File /nonfatal "..\build\bin\Release\websockets_shared.dll"
-
- SetOutPath "$INSTDIR\libwebsockets-test-server"
- File /nonfatal "..\build\bin\share\libwebsockets-test-server\favicon.ico"
- File /nonfatal "..\build\bin\share\libwebsockets-test-server\leaf.jpg"
- File /nonfatal "..\build\bin\share\libwebsockets-test-server\libwebsockets.org-logo.png"
- File /nonfatal "..\build\bin\share\libwebsockets-test-server\libwebsockets-test-server.key.pem"
- File /nonfatal "..\build\bin\share\libwebsockets-test-server\libwebsockets-test-server.pem"
- File /nonfatal "..\build\bin\share\libwebsockets-test-server\test.html"
-
- SetOutPath "$INSTDIR\lib"
- File /nonfatal "..\build\lib\Release\websockets.lib"
- File /nonfatal "..\build\lib\Release\websockets_static.lib"
- File /nonfatal "..\build\lib\Release\websockets_shared.lib"
- File /nonfatal "..\build\lib\Release\websockets.lib"
-
- SetOutPath "$INSTDIR\include"
- File "..\lib\libwebsockets.h"
-
- WriteUninstaller "$INSTDIR\Uninstall.exe"
- WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "DisplayName" "libwebsockets library and clients"
- WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "UninstallString" "$\"$INSTDIR\Uninstall.exe$\""
- WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "QuietUninstallString" "$\"$INSTDIR\Uninstall.exe$\" /S"
- WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "HelpLink" "https://libwebsockets.org/"
- WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "URLInfoAbout" "http://libwebsockets.org/"
- WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "DisplayVersion" "${VERSION}"
- WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "NoModify" "1"
- WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets" "NoRepair" "1"
-SectionEnd
-
-Section "Uninstall"
- Delete "$INSTDIR\libwebsockets-api-doc.html"
- Delete "$INSTDIR\LICENSE"
- Delete "$INSTDIR\README.md"
- Delete "$INSTDIR\README.build.md"
- Delete "$INSTDIR\README.coding.md"
- Delete "$INSTDIR\README.test-apps.md"
- Delete "$INSTDIR\libwebsockets-test-client.exe"
- Delete "$INSTDIR\libwebsockets-test-echo.exe"
- Delete "$INSTDIR\libwebsockets-test-fraggle.exe"
- Delete "$INSTDIR\libwebsockets-test-ping.exe"
- Delete "$INSTDIR\libwebsockets-test-server.exe"
- Delete "$INSTDIR\libwebsockets-test-server-extpoll.exe"
- Delete "$INSTDIR\websockets.dll"
-
- Delete "$INSTDIR\libwebsockets-test-server\favicon.ico"
- Delete "$INSTDIR\libwebsockets-test-server\leaf.jpg"
- Delete "$INSTDIR\libwebsockets-test-server\libwebsockets.org-logo.png"
- Delete "$INSTDIR\libwebsockets-test-server\libwebsockets-test-server.key.pem"
- Delete "$INSTDIR\libwebsockets-test-server\libwebsockets-test-server.pem"
- Delete "$INSTDIR\libwebsockets-test-server\test.html"
- RMDir "$INSTDIR\libwebsockets-test-server"
-
- Delete "$INSTDIR\lib\websockets.lib"
- Delete "$INSTDIR\lib\websockets_static.lib"
- RMDir "$INSTDIR\lib"
-
- Delete "$INSTDIR\include\libwebsockets.h"
- RMDir "$INSTDIR\include"
-
- Delete "$INSTDIR\Uninstall.exe"
- RMDir "$INSTDIR"
- DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\libwebsockets"
-SectionEnd
-
-LangString DESC_SecInstall ${LANG_ENGLISH} "The main installation."
-!insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
- !insertmacro MUI_DESCRIPTION_TEXT ${SecInstall} $(DESC_SecInstall)
-!insertmacro MUI_FUNCTION_DESCRIPTION_END
-
+++ /dev/null
-/* $NetBSD: getopt.c,v 1.16 1999/12/02 13:15:56 kleink Exp $ */\r
-\r
-/*\r
- * Copyright (c) 1987, 1993, 1994\r
- * The Regents of the University of California. All rights reserved.\r
- *\r
- * Redistribution and use in source and binary forms, with or without\r
- * modification, are permitted provided that the following conditions\r
- * are met:\r
- * 1. Redistributions of source code must retain the above copyright\r
- * notice, this list of conditions and the following disclaimer.\r
- * 2. Redistributions in binary form must reproduce the above copyright\r
- * notice, this list of conditions and the following disclaimer in the\r
- * documentation and/or other materials provided with the distribution.\r
- * 3. All advertising materials mentioning features or use of this software\r
- * must display the following acknowledgement:\r
- * This product includes software developed by the University of\r
- * California, Berkeley and its contributors.\r
- * 4. Neither the name of the University nor the names of its contributors\r
- * may be used to endorse or promote products derived from this software\r
- * without specific prior written permission.\r
- *\r
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
- * SUCH DAMAGE.\r
- */\r
-\r
-#if 0\r
-static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";\r
-#endif\r
-\r
-#include <assert.h>\r
-#include <errno.h>\r
-#include <stdio.h>\r
-#include <string.h>\r
-\r
-#define __P(x) x\r
-#define _DIAGASSERT(x) assert(x)\r
-\r
-#ifdef __weak_alias\r
-__weak_alias(getopt,_getopt);\r
-#endif\r
-\r
-\r
-int opterr = 1, /* if error message should be printed */\r
- optind = 1, /* index into parent argv vector */\r
- optopt, /* character checked for validity */\r
- optreset; /* reset getopt */\r
-char *optarg; /* argument associated with option */\r
-\r
-static char * _progname __P((char *));\r
-int getopt_internal __P((int, char * const *, const char *));\r
-\r
-static char *\r
-_progname(nargv0)\r
- char * nargv0;\r
-{\r
- char * tmp;\r
-\r
- _DIAGASSERT(nargv0 != NULL);\r
-\r
- tmp = strrchr(nargv0, '/');\r
- if (tmp)\r
- tmp++;\r
- else\r
- tmp = nargv0;\r
- return(tmp);\r
-}\r
-\r
-#define BADCH (int)'?'\r
-#define BADARG (int)':'\r
-#define EMSG ""\r
-\r
-/*\r
- * getopt --\r
- * Parse argc/argv argument vector.\r
- */\r
-int\r
-getopt(nargc, nargv, ostr)\r
- int nargc;\r
- char * const nargv[];\r
- const char *ostr;\r
-{\r
- static char *__progname = 0;\r
- static char *place = EMSG; /* option letter processing */\r
- char *oli; /* option letter list index */\r
- __progname = __progname?__progname:_progname(*nargv);\r
-\r
- _DIAGASSERT(nargv != NULL);\r
- _DIAGASSERT(ostr != NULL);\r
-\r
- if (optreset || !*place) { /* update scanning pointer */\r
- optreset = 0;\r
- if (optind >= nargc || *(place = nargv[optind]) != '-') {\r
- place = EMSG;\r
- return (-1);\r
- }\r
- if (place[1] && *++place == '-' /* found "--" */\r
- && place[1] == '\0') {\r
- ++optind;\r
- place = EMSG;\r
- return (-1);\r
- }\r
- } /* option letter okay? */\r
- if ((optopt = (int)*place++) == (int)':' ||\r
- !(oli = strchr(ostr, optopt))) {\r
- /*\r
- * if the user didn't specify '-' as an option,\r
- * assume it means -1.\r
- */\r
- if (optopt == (int)'-')\r
- return (-1);\r
- if (!*place)\r
- ++optind;\r
- if (opterr && *ostr != ':')\r
- (void)fprintf(stderr,\r
- "%s: illegal option -- %c\n", __progname, optopt);\r
- return (BADCH);\r
- }\r
- if (*++oli != ':') { /* don't need argument */\r
- optarg = NULL;\r
- if (!*place)\r
- ++optind;\r
- }\r
- else { /* need an argument */\r
- if (*place) /* no white space */\r
- optarg = place;\r
- else if (nargc <= ++optind) { /* no arg */\r
- place = EMSG;\r
- if (*ostr == ':')\r
- return (BADARG);\r
- if (opterr)\r
- (void)fprintf(stderr,\r
- "%s: option requires an argument -- %c\n",\r
- __progname, optopt);\r
- return (BADCH);\r
- }\r
- else /* white space */\r
- optarg = nargv[optind];\r
- place = EMSG;\r
- ++optind;\r
- }\r
- return (optopt); /* dump back option letter */\r
-}\r
-\r
+++ /dev/null
-#ifndef __GETOPT_H__\r
-#define __GETOPT_H__\r
-\r
-#ifdef __cplusplus\r
-extern "C" {\r
-#endif\r
-\r
-extern int opterr; /* if error message should be printed */\r
-extern int optind; /* index into parent argv vector */\r
-extern int optopt; /* character checked for validity */\r
-extern int optreset; /* reset getopt */\r
-extern char *optarg; /* argument associated with option */\r
-\r
-struct option\r
-{\r
- const char *name;\r
- int has_arg;\r
- int *flag;\r
- int val;\r
-};\r
-\r
-#define no_argument 0\r
-#define required_argument 1\r
-#define optional_argument 2\r
-\r
-int getopt(int, char**, char*);\r
-int getopt_long(int, char**, char*, struct option*, int*);\r
-\r
-#ifdef __cplusplus\r
-}\r
-#endif\r
-\r
-#endif /* __GETOPT_H__ */\r
+++ /dev/null
-#include <time.h>\r
-#include <windows.h> //I've omitted context line\r
-\r
-#include "gettimeofday.h"\r
-\r
-int gettimeofday(struct timeval *tv, struct timezone *tz)\r
-{\r
- FILETIME ft;\r
- unsigned __int64 tmpres = 0;\r
- static int tzflag;\r
-\r
- if (NULL != tv) {\r
- GetSystemTimeAsFileTime(&ft);\r
-\r
- tmpres |= ft.dwHighDateTime;\r
- tmpres <<= 32;\r
- tmpres |= ft.dwLowDateTime;\r
-\r
- /*converting file time to unix epoch*/\r
- tmpres /= 10; /*convert into microseconds*/\r
- tmpres -= DELTA_EPOCH_IN_MICROSECS;
- tv->tv_sec = (long)(tmpres / 1000000UL);\r
- tv->tv_usec = (long)(tmpres % 1000000UL);\r
- }\r
- \r
- if (NULL != tz) {\r
- if (!tzflag) {\r
- _tzset();\r
- tzflag++;\r
- }\r
- tz->tz_minuteswest = _timezone / 60;\r
- tz->tz_dsttime = _daylight;\r
- }\r
-\r
- return 0;\r
-}\r
+++ /dev/null
-#ifndef _GET_TIME_OF_DAY_H
-#define _GET_TIME_OF_DAY_H
-
-#include <time.h>
-
-#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
- #define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64
-#else
- #define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
-#endif
-
-#ifdef LWS_MINGW_SUPPORT
- #include <winsock2.h>
-#endif
-
-#ifndef _TIMEZONE_DEFINED
-struct timezone
-{
- int tz_minuteswest; /* minutes W of Greenwich */
- int tz_dsttime; /* type of dst correction */
-};
-
-#endif
-
-int gettimeofday(struct timeval *tv, struct timezone *tz);
-
-#endif
+++ /dev/null
-<?xml version="1.0" encoding="utf-8"?>\r
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">\r
- <ItemGroup Label="ProjectConfigurations">\r
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- <Configuration>Debug static</Configuration>\r
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-{\r
- unsigned long sum2;\r
- unsigned n;\r
-\r
- /* split Adler-32 into component sums */\r
- sum2 = (adler >> 16) & 0xffff;\r
- adler &= 0xffff;\r
-\r
- /* in case user likes doing a byte at a time, keep it fast */\r
- if (len == 1) {\r
- adler += buf[0];\r
- if (adler >= BASE)\r
- adler -= BASE;\r
- sum2 += adler;\r
- if (sum2 >= BASE)\r
- sum2 -= BASE;\r
- return adler | (sum2 << 16);\r
- }\r
-\r
- /* initial Adler-32 value (deferred check for len == 1 speed) */\r
- if (buf == Z_NULL)\r
- return 1L;\r
-\r
- /* in case short lengths are provided, keep it somewhat fast */\r
- if (len < 16) {\r
- while (len--) {\r
- adler += *buf++;\r
- sum2 += adler;\r
- }\r
- if (adler >= BASE)\r
- adler -= BASE;\r
- MOD4(sum2); /* only added so many BASE's */\r
- return adler | (sum2 << 16);\r
- }\r
-\r
- /* do length NMAX blocks -- requires just one modulo operation */\r
- while (len >= NMAX) {\r
- len -= NMAX;\r
- n = NMAX / 16; /* NMAX is divisible by 16 */\r
- do {\r
- DO16(buf); /* 16 sums unrolled */\r
- buf += 16;\r
- } while (--n);\r
- MOD(adler);\r
- MOD(sum2);\r
- }\r
-\r
- /* do remaining bytes (less than NMAX, still just one modulo) */\r
- if (len) { /* avoid modulos if none remaining */\r
- while (len >= 16) {\r
- len -= 16;\r
- DO16(buf);\r
- buf += 16;\r
- }\r
- while (len--) {\r
- adler += *buf++;\r
- sum2 += adler;\r
- }\r
- MOD(adler);\r
- MOD(sum2);\r
- }\r
-\r
- /* return recombined sums */\r
- return adler | (sum2 << 16);\r
-}\r
-\r
-/* ========================================================================= */\r
-local uLong adler32_combine_(adler1, adler2, len2)\r
- uLong adler1;\r
- uLong adler2;\r
- z_off64_t len2;\r
-{\r
- unsigned long sum1;\r
- unsigned long sum2;\r
- unsigned rem;\r
-\r
- /* the derivation of this formula is left as an exercise for the reader */\r
- rem = (unsigned)(len2 % BASE);\r
- sum1 = adler1 & 0xffff;\r
- sum2 = rem * sum1;\r
- MOD(sum2);\r
- sum1 += (adler2 & 0xffff) + BASE - 1;\r
- sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;\r
- if (sum1 >= BASE) sum1 -= BASE;\r
- if (sum1 >= BASE) sum1 -= BASE;\r
- if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1);\r
- if (sum2 >= BASE) sum2 -= BASE;\r
- return sum1 | (sum2 << 16);\r
-}\r
-\r
-/* ========================================================================= */\r
-uLong ZEXPORT adler32_combine(adler1, adler2, len2)\r
- uLong adler1;\r
- uLong adler2;\r
- z_off_t len2;\r
-{\r
- return adler32_combine_(adler1, adler2, len2);\r
-}\r
-\r
-uLong ZEXPORT adler32_combine64(adler1, adler2, len2)\r
- uLong adler1;\r
- uLong adler2;\r
- z_off64_t len2;\r
-{\r
- return adler32_combine_(adler1, adler2, len2);\r
-}\r
+++ /dev/null
-/* compress.c -- compress a memory buffer\r
- * Copyright (C) 1995-2005 Jean-loup Gailly.\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* \param (#) $Id$ */\r
-\r
-#define ZLIB_INTERNAL\r
-#include "zlib.h"\r
-\r
-/* ===========================================================================\r
- Compresses the source buffer into the destination buffer. The level\r
- parameter has the same meaning as in deflateInit. sourceLen is the byte\r
- length of the source buffer. Upon entry, destLen is the total size of the\r
- destination buffer, which must be at least 0.1% larger than sourceLen plus\r
- 12 bytes. Upon exit, destLen is the actual size of the compressed buffer.\r
-\r
- compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
- memory, Z_BUF_ERROR if there was not enough room in the output buffer,\r
- Z_STREAM_ERROR if the level parameter is invalid.\r
-*/\r
-int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)\r
- Bytef *dest;\r
- uLongf *destLen;\r
- const Bytef *source;\r
- uLong sourceLen;\r
- int level;\r
-{\r
- z_stream stream;\r
- int err;\r
-\r
- stream.next_in = (Bytef*)source;\r
- stream.avail_in = (uInt)sourceLen;\r
-#ifdef MAXSEG_64K\r
- /* Check for source > 64K on 16-bit machine: */\r
- if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;\r
-#endif\r
- stream.next_out = dest;\r
- stream.avail_out = (uInt)*destLen;\r
- if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;\r
-\r
- stream.zalloc = (alloc_func)0;\r
- stream.zfree = (free_func)0;\r
- stream.opaque = (voidpf)0;\r
-\r
- err = deflateInit(&stream, level);\r
- if (err != Z_OK) return err;\r
-\r
- err = deflate(&stream, Z_FINISH);\r
- if (err != Z_STREAM_END) {\r
- deflateEnd(&stream);\r
- return err == Z_OK ? Z_BUF_ERROR : err;\r
- }\r
- *destLen = stream.total_out;\r
-\r
- err = deflateEnd(&stream);\r
- return err;\r
-}\r
-\r
-/* ===========================================================================\r
- */\r
-int ZEXPORT compress (dest, destLen, source, sourceLen)\r
- Bytef *dest;\r
- uLongf *destLen;\r
- const Bytef *source;\r
- uLong sourceLen;\r
-{\r
- return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);\r
-}\r
-\r
-/* ===========================================================================\r
- If the default memLevel or windowBits for deflateInit() is changed, then\r
- this function needs to be updated.\r
- */\r
-uLong ZEXPORT compressBound (sourceLen)\r
- uLong sourceLen;\r
-{\r
- return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +\r
- (sourceLen >> 25) + 13;\r
-}\r
+++ /dev/null
-/* crc32.h -- tables for rapid CRC calculation\r
- * Generated automatically by crc32.c\r
- */\r
-\r
-local const unsigned long FAR crc_table[TBLS][256] =\r
-{\r
- {\r
- 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,\r
- 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,\r
- 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,\r
- 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,\r
- 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,\r
- 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,\r
- 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,\r
- 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,\r
- 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,\r
- 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,\r
- 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,\r
- 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,\r
- 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,\r
- 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,\r
- 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,\r
- 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,\r
- 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,\r
- 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,\r
- 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,\r
- 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,\r
- 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,\r
- 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,\r
- 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,\r
- 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,\r
- 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,\r
- 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,\r
- 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,\r
- 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,\r
- 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,\r
- 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,\r
- 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,\r
- 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,\r
- 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,\r
- 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,\r
- 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,\r
- 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,\r
- 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,\r
- 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,\r
- 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,\r
- 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,\r
- 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,\r
- 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,\r
- 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,\r
- 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,\r
- 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,\r
- 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,\r
- 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,\r
- 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,\r
- 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,\r
- 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,\r
- 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,\r
- 0x2d02ef8dUL\r
-#ifdef BYFOUR\r
- },\r
- {\r
- 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,\r
- 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,\r
- 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,\r
- 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,\r
- 0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,\r
- 0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,\r
- 0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,\r
- 0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,\r
- 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,\r
- 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,\r
- 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,\r
- 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,\r
- 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,\r
- 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,\r
- 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,\r
- 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,\r
- 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,\r
- 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,\r
- 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,\r
- 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,\r
- 0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL,\r
- 0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL,\r
- 0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL,\r
- 0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL,\r
- 0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL,\r
- 0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL,\r
- 0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL,\r
- 0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL,\r
- 0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL,\r
- 0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL,\r
- 0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL,\r
- 0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL,\r
- 0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL,\r
- 0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL,\r
- 0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL,\r
- 0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL,\r
- 0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL,\r
- 0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL,\r
- 0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL,\r
- 0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL,\r
- 0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL,\r
- 0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL,\r
- 0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL,\r
- 0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL,\r
- 0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL,\r
- 0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL,\r
- 0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL,\r
- 0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL,\r
- 0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL,\r
- 0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL,\r
- 0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL,\r
- 0x9324fd72UL\r
- },\r
- {\r
- 0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL,\r
- 0x06cbc2ebUL, 0x048d7cb2UL, 0x054f1685UL, 0x0e1351b8UL, 0x0fd13b8fUL,\r
- 0x0d9785d6UL, 0x0c55efe1UL, 0x091af964UL, 0x08d89353UL, 0x0a9e2d0aUL,\r
- 0x0b5c473dUL, 0x1c26a370UL, 0x1de4c947UL, 0x1fa2771eUL, 0x1e601d29UL,\r
- 0x1b2f0bacUL, 0x1aed619bUL, 0x18abdfc2UL, 0x1969b5f5UL, 0x1235f2c8UL,\r
- 0x13f798ffUL, 0x11b126a6UL, 0x10734c91UL, 0x153c5a14UL, 0x14fe3023UL,\r
- 0x16b88e7aUL, 0x177ae44dUL, 0x384d46e0UL, 0x398f2cd7UL, 0x3bc9928eUL,\r
- 0x3a0bf8b9UL, 0x3f44ee3cUL, 0x3e86840bUL, 0x3cc03a52UL, 0x3d025065UL,\r
- 0x365e1758UL, 0x379c7d6fUL, 0x35dac336UL, 0x3418a901UL, 0x3157bf84UL,\r
- 0x3095d5b3UL, 0x32d36beaUL, 0x331101ddUL, 0x246be590UL, 0x25a98fa7UL,\r
- 0x27ef31feUL, 0x262d5bc9UL, 0x23624d4cUL, 0x22a0277bUL, 0x20e69922UL,\r
- 0x2124f315UL, 0x2a78b428UL, 0x2bbade1fUL, 0x29fc6046UL, 0x283e0a71UL,\r
- 0x2d711cf4UL, 0x2cb376c3UL, 0x2ef5c89aUL, 0x2f37a2adUL, 0x709a8dc0UL,\r
- 0x7158e7f7UL, 0x731e59aeUL, 0x72dc3399UL, 0x7793251cUL, 0x76514f2bUL,\r
- 0x7417f172UL, 0x75d59b45UL, 0x7e89dc78UL, 0x7f4bb64fUL, 0x7d0d0816UL,\r
- 0x7ccf6221UL, 0x798074a4UL, 0x78421e93UL, 0x7a04a0caUL, 0x7bc6cafdUL,\r
- 0x6cbc2eb0UL, 0x6d7e4487UL, 0x6f38fadeUL, 0x6efa90e9UL, 0x6bb5866cUL,\r
- 0x6a77ec5bUL, 0x68315202UL, 0x69f33835UL, 0x62af7f08UL, 0x636d153fUL,\r
- 0x612bab66UL, 0x60e9c151UL, 0x65a6d7d4UL, 0x6464bde3UL, 0x662203baUL,\r
- 0x67e0698dUL, 0x48d7cb20UL, 0x4915a117UL, 0x4b531f4eUL, 0x4a917579UL,\r
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- 0x5c29fb03UL, 0x5e6f455aUL, 0x5fad2f6dUL, 0xe1351b80UL, 0xe0f771b7UL,\r
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- 0x88c623b5UL, 0x839a6488UL, 0x82580ebfUL, 0x801eb0e6UL, 0x81dcdad1UL,\r
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- 0xa5b73f41UL, 0xa0f829c4UL, 0xa13a43f3UL, 0xa37cfdaaUL, 0xa2be979dUL,\r
- 0xb5c473d0UL, 0xb40619e7UL, 0xb640a7beUL, 0xb782cd89UL, 0xb2cddb0cUL,\r
- 0xb30fb13bUL, 0xb1490f62UL, 0xb08b6555UL, 0xbbd72268UL, 0xba15485fUL,\r
- 0xb853f606UL, 0xb9919c31UL, 0xbcde8ab4UL, 0xbd1ce083UL, 0xbf5a5edaUL,\r
- 0xbe9834edUL\r
- },\r
- {\r
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- 0xb0c620acUL, 0x087a47c9UL, 0xa032af3eUL, 0x188ec85bUL, 0x0a3b67b5UL,\r
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- 0xde0506f1UL\r
- },\r
- {\r
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- 0xff9e658fUL, 0x69ae62f8UL, 0xd3ff6b61UL, 0x45cf6c16UL, 0x78e20aa0UL,\r
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- 0x021b685dUL, 0x942b6f2aUL, 0x37be0bb4UL, 0xa18e0cc3UL, 0x1bdf055aUL,\r
- 0x8def022dUL\r
- },\r
- {\r
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- 0x45f4777dUL, 0x86a75a56UL, 0xc796414fUL, 0x088ad9c8UL, 0x49bbc2d1UL,\r
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- 0xcf1c9887UL, 0x5112c24aUL, 0x1023d953UL, 0xd370f478UL, 0x9241ef61UL,\r
- 0x55d7ae2eUL, 0x14e6b537UL, 0xd7b5981cUL, 0x96848305UL, 0x59981b82UL,\r
- 0x18a9009bUL, 0xdbfa2db0UL, 0x9acb36a9UL, 0x5d5d77e6UL, 0x1c6c6cffUL,\r
- 0xdf3f41d4UL, 0x9e0e5acdUL, 0xa2248495UL, 0xe3159f8cUL, 0x2046b2a7UL,\r
- 0x6177a9beUL, 0xa6e1e8f1UL, 0xe7d0f3e8UL, 0x2483dec3UL, 0x65b2c5daUL,\r
- 0xaaae5d5dUL, 0xeb9f4644UL, 0x28cc6b6fUL, 0x69fd7076UL, 0xae6b3139UL,\r
- 0xef5a2a20UL, 0x2c09070bUL, 0x6d381c12UL, 0xf33646dfUL, 0xb2075dc6UL,\r
- 0x715470edUL, 0x30656bf4UL, 0xf7f32abbUL, 0xb6c231a2UL, 0x75911c89UL,\r
- 0x34a00790UL, 0xfbbc9f17UL, 0xba8d840eUL, 0x79dea925UL, 0x38efb23cUL,\r
- 0xff79f373UL, 0xbe48e86aUL, 0x7d1bc541UL, 0x3c2ade58UL, 0x054f79f0UL,\r
- 0x447e62e9UL, 0x872d4fc2UL, 0xc61c54dbUL, 0x018a1594UL, 0x40bb0e8dUL,\r
- 0x83e823a6UL, 0xc2d938bfUL, 0x0dc5a038UL, 0x4cf4bb21UL, 0x8fa7960aUL,\r
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- 0xdeb55440UL, 0x9f844f59UL, 0x58120e16UL, 0x1923150fUL, 0xda703824UL,\r
- 0x9b41233dUL, 0xa76bfd65UL, 0xe65ae67cUL, 0x2509cb57UL, 0x6438d04eUL,\r
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- 0xeed03fb4UL, 0x2d83129fUL, 0x6cb20986UL, 0xab2448c9UL, 0xea1553d0UL,\r
- 0x29467efbUL, 0x687765e2UL, 0xf6793f2fUL, 0xb7482436UL, 0x741b091dUL,\r
- 0x352a1204UL, 0xf2bc534bUL, 0xb38d4852UL, 0x70de6579UL, 0x31ef7e60UL,\r
- 0xfef3e6e7UL, 0xbfc2fdfeUL, 0x7c91d0d5UL, 0x3da0cbccUL, 0xfa368a83UL,\r
- 0xbb07919aUL, 0x7854bcb1UL, 0x3965a7a8UL, 0x4b98833bUL, 0x0aa99822UL,\r
- 0xc9fab509UL, 0x88cbae10UL, 0x4f5def5fUL, 0x0e6cf446UL, 0xcd3fd96dUL,\r
- 0x8c0ec274UL, 0x43125af3UL, 0x022341eaUL, 0xc1706cc1UL, 0x804177d8UL,\r
- 0x47d73697UL, 0x06e62d8eUL, 0xc5b500a5UL, 0x84841bbcUL, 0x1a8a4171UL,\r
- 0x5bbb5a68UL, 0x98e87743UL, 0xd9d96c5aUL, 0x1e4f2d15UL, 0x5f7e360cUL,\r
- 0x9c2d1b27UL, 0xdd1c003eUL, 0x120098b9UL, 0x533183a0UL, 0x9062ae8bUL,\r
- 0xd153b592UL, 0x16c5f4ddUL, 0x57f4efc4UL, 0x94a7c2efUL, 0xd596d9f6UL,\r
- 0xe9bc07aeUL, 0xa88d1cb7UL, 0x6bde319cUL, 0x2aef2a85UL, 0xed796bcaUL,\r
- 0xac4870d3UL, 0x6f1b5df8UL, 0x2e2a46e1UL, 0xe136de66UL, 0xa007c57fUL,\r
- 0x6354e854UL, 0x2265f34dUL, 0xe5f3b202UL, 0xa4c2a91bUL, 0x67918430UL,\r
- 0x26a09f29UL, 0xb8aec5e4UL, 0xf99fdefdUL, 0x3accf3d6UL, 0x7bfde8cfUL,\r
- 0xbc6ba980UL, 0xfd5ab299UL, 0x3e099fb2UL, 0x7f3884abUL, 0xb0241c2cUL,\r
- 0xf1150735UL, 0x32462a1eUL, 0x73773107UL, 0xb4e17048UL, 0xf5d06b51UL,\r
- 0x3683467aUL, 0x77b25d63UL, 0x4ed7facbUL, 0x0fe6e1d2UL, 0xccb5ccf9UL,\r
- 0x8d84d7e0UL, 0x4a1296afUL, 0x0b238db6UL, 0xc870a09dUL, 0x8941bb84UL,\r
- 0x465d2303UL, 0x076c381aUL, 0xc43f1531UL, 0x850e0e28UL, 0x42984f67UL,\r
- 0x03a9547eUL, 0xc0fa7955UL, 0x81cb624cUL, 0x1fc53881UL, 0x5ef42398UL,\r
- 0x9da70eb3UL, 0xdc9615aaUL, 0x1b0054e5UL, 0x5a314ffcUL, 0x996262d7UL,\r
- 0xd85379ceUL, 0x174fe149UL, 0x567efa50UL, 0x952dd77bUL, 0xd41ccc62UL,\r
- 0x138a8d2dUL, 0x52bb9634UL, 0x91e8bb1fUL, 0xd0d9a006UL, 0xecf37e5eUL,\r
- 0xadc26547UL, 0x6e91486cUL, 0x2fa05375UL, 0xe836123aUL, 0xa9070923UL,\r
- 0x6a542408UL, 0x2b653f11UL, 0xe479a796UL, 0xa548bc8fUL, 0x661b91a4UL,\r
- 0x272a8abdUL, 0xe0bccbf2UL, 0xa18dd0ebUL, 0x62defdc0UL, 0x23efe6d9UL,\r
- 0xbde1bc14UL, 0xfcd0a70dUL, 0x3f838a26UL, 0x7eb2913fUL, 0xb924d070UL,\r
- 0xf815cb69UL, 0x3b46e642UL, 0x7a77fd5bUL, 0xb56b65dcUL, 0xf45a7ec5UL,\r
- 0x370953eeUL, 0x763848f7UL, 0xb1ae09b8UL, 0xf09f12a1UL, 0x33cc3f8aUL,\r
- 0x72fd2493UL\r
- },\r
- {\r
- 0x00000000UL, 0x376ac201UL, 0x6ed48403UL, 0x59be4602UL, 0xdca80907UL,\r
- 0xebc2cb06UL, 0xb27c8d04UL, 0x85164f05UL, 0xb851130eUL, 0x8f3bd10fUL,\r
- 0xd685970dUL, 0xe1ef550cUL, 0x64f91a09UL, 0x5393d808UL, 0x0a2d9e0aUL,\r
- 0x3d475c0bUL, 0x70a3261cUL, 0x47c9e41dUL, 0x1e77a21fUL, 0x291d601eUL,\r
- 0xac0b2f1bUL, 0x9b61ed1aUL, 0xc2dfab18UL, 0xf5b56919UL, 0xc8f23512UL,\r
- 0xff98f713UL, 0xa626b111UL, 0x914c7310UL, 0x145a3c15UL, 0x2330fe14UL,\r
- 0x7a8eb816UL, 0x4de47a17UL, 0xe0464d38UL, 0xd72c8f39UL, 0x8e92c93bUL,\r
- 0xb9f80b3aUL, 0x3cee443fUL, 0x0b84863eUL, 0x523ac03cUL, 0x6550023dUL,\r
- 0x58175e36UL, 0x6f7d9c37UL, 0x36c3da35UL, 0x01a91834UL, 0x84bf5731UL,\r
- 0xb3d59530UL, 0xea6bd332UL, 0xdd011133UL, 0x90e56b24UL, 0xa78fa925UL,\r
- 0xfe31ef27UL, 0xc95b2d26UL, 0x4c4d6223UL, 0x7b27a022UL, 0x2299e620UL,\r
- 0x15f32421UL, 0x28b4782aUL, 0x1fdeba2bUL, 0x4660fc29UL, 0x710a3e28UL,\r
- 0xf41c712dUL, 0xc376b32cUL, 0x9ac8f52eUL, 0xada2372fUL, 0xc08d9a70UL,\r
- 0xf7e75871UL, 0xae591e73UL, 0x9933dc72UL, 0x1c259377UL, 0x2b4f5176UL,\r
- 0x72f11774UL, 0x459bd575UL, 0x78dc897eUL, 0x4fb64b7fUL, 0x16080d7dUL,\r
- 0x2162cf7cUL, 0xa4748079UL, 0x931e4278UL, 0xcaa0047aUL, 0xfdcac67bUL,\r
- 0xb02ebc6cUL, 0x87447e6dUL, 0xdefa386fUL, 0xe990fa6eUL, 0x6c86b56bUL,\r
- 0x5bec776aUL, 0x02523168UL, 0x3538f369UL, 0x087faf62UL, 0x3f156d63UL,\r
- 0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,\r
- 0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,\r
- 0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,\r
- 0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,\r
- 0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,\r
- 0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,\r
- 0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,\r
- 0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,\r
- 0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,\r
- 0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,\r
- 0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,\r
- 0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,\r
- 0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,\r
- 0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,\r
- 0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,\r
- 0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,\r
- 0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,\r
- 0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,\r
- 0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,\r
- 0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,\r
- 0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,\r
- 0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,\r
- 0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,\r
- 0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,\r
- 0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,\r
- 0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,\r
- 0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,\r
- 0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,\r
- 0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,\r
- 0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,\r
- 0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,\r
- 0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,\r
- 0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,\r
- 0xed3498beUL\r
- },\r
- {\r
- 0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,\r
- 0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,\r
- 0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,\r
- 0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,\r
- 0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,\r
- 0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,\r
- 0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,\r
- 0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,\r
- 0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,\r
- 0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,\r
- 0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,\r
- 0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,\r
- 0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,\r
- 0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,\r
- 0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,\r
- 0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,\r
- 0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,\r
- 0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,\r
- 0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,\r
- 0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,\r
- 0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,\r
- 0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,\r
- 0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,\r
- 0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,\r
- 0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,\r
- 0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,\r
- 0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,\r
- 0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,\r
- 0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,\r
- 0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,\r
- 0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,\r
- 0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,\r
- 0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,\r
- 0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,\r
- 0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,\r
- 0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,\r
- 0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,\r
- 0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,\r
- 0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,\r
- 0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,\r
- 0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,\r
- 0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,\r
- 0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,\r
- 0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,\r
- 0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,\r
- 0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,\r
- 0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,\r
- 0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,\r
- 0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,\r
- 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,\r
- 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,\r
- 0xf10605deUL\r
-#endif\r
- }\r
-};\r
+++ /dev/null
-/* deflate.h -- internal compression state\r
- * Copyright (C) 1995-2010 Jean-loup Gailly\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* WARNING: this file should *not* be used by applications. It is\r
- part of the implementation of the compression library and is\r
- subject to change. Applications should only use zlib.h.\r
- */\r
-\r
-/* \param (#) $Id$ */\r
-\r
-#ifndef DEFLATE_H\r
-#define DEFLATE_H\r
-\r
-#include "zutil.h"\r
-\r
-/* define NO_GZIP when compiling if you want to disable gzip header and\r
- trailer creation by deflate(). NO_GZIP would be used to avoid linking in\r
- the crc code when it is not needed. For shared libraries, gzip encoding\r
- should be left enabled. */\r
-#ifndef NO_GZIP\r
-# define GZIP\r
-#endif\r
-\r
-/* ===========================================================================\r
- * Internal compression state.\r
- */\r
-\r
-#define LENGTH_CODES 29\r
-/* number of length codes, not counting the special END_BLOCK code */\r
-\r
-#define LITERALS 256\r
-/* number of literal bytes 0..255 */\r
-\r
-#define L_CODES (LITERALS+1+LENGTH_CODES)\r
-/* number of Literal or Length codes, including the END_BLOCK code */\r
-\r
-#define D_CODES 30\r
-/* number of distance codes */\r
-\r
-#define BL_CODES 19\r
-/* number of codes used to transfer the bit lengths */\r
-\r
-#define HEAP_SIZE (2*L_CODES+1)\r
-/* maximum heap size */\r
-\r
-#define MAX_BITS 15\r
-/* All codes must not exceed MAX_BITS bits */\r
-\r
-#define INIT_STATE 42\r
-#define EXTRA_STATE 69\r
-#define NAME_STATE 73\r
-#define COMMENT_STATE 91\r
-#define HCRC_STATE 103\r
-#define BUSY_STATE 113\r
-#define FINISH_STATE 666\r
-/* Stream status */\r
-\r
-\r
-/* Data structure describing a single value and its code string. */\r
-typedef struct ct_data_s {\r
- union {\r
- ush freq; /* frequency count */\r
- ush code; /* bit string */\r
- } fc;\r
- union {\r
- ush dad; /* father node in Huffman tree */\r
- ush len; /* length of bit string */\r
- } dl;\r
-} FAR ct_data;\r
-\r
-#define Freq fc.freq\r
-#define Code fc.code\r
-#define Dad dl.dad\r
-#define Len dl.len\r
-\r
-typedef struct static_tree_desc_s static_tree_desc;\r
-\r
-typedef struct tree_desc_s {\r
- ct_data *dyn_tree; /* the dynamic tree */\r
- int max_code; /* largest code with non zero frequency */\r
- static_tree_desc *stat_desc; /* the corresponding static tree */\r
-} FAR tree_desc;\r
-\r
-typedef ush Pos;\r
-typedef Pos FAR Posf;\r
-typedef unsigned IPos;\r
-\r
-/* A Pos is an index in the character window. We use short instead of int to\r
- * save space in the various tables. IPos is used only for parameter passing.\r
- */\r
-\r
-typedef struct internal_state {\r
- z_streamp strm; /* pointer back to this zlib stream */\r
- int status; /* as the name implies */\r
- Bytef *pending_buf; /* output still pending */\r
- ulg pending_buf_size; /* size of pending_buf */\r
- Bytef *pending_out; /* next pending byte to output to the stream */\r
- uInt pending; /* nb of bytes in the pending buffer */\r
- int wrap; /* bit 0 true for zlib, bit 1 true for gzip */\r
- gz_headerp gzhead; /* gzip header information to write */\r
- uInt gzindex; /* where in extra, name, or comment */\r
- Byte method; /* STORED (for zip only) or DEFLATED */\r
- int last_flush; /* value of flush param for previous deflate call */\r
-\r
- /* used by deflate.c: */\r
-\r
- uInt w_size; /* LZ77 window size (32K by default) */\r
- uInt w_bits; /* log2(w_size) (8..16) */\r
- uInt w_mask; /* w_size - 1 */\r
-\r
- Bytef *window;\r
- /* Sliding window. Input bytes are read into the second half of the window,\r
- * and move to the first half later to keep a dictionary of at least wSize\r
- * bytes. With this organization, matches are limited to a distance of\r
- * wSize-MAX_MATCH bytes, but this ensures that IO is always\r
- * performed with a length multiple of the block size. Also, it limits\r
- * the window size to 64K, which is quite useful on MSDOS.\r
- * To do: use the user input buffer as sliding window.\r
- */\r
-\r
- ulg window_size;\r
- /* Actual size of window: 2*wSize, except when the user input buffer\r
- * is directly used as sliding window.\r
- */\r
-\r
- Posf *prev;\r
- /* Link to older string with same hash index. To limit the size of this\r
- * array to 64K, this link is maintained only for the last 32K strings.\r
- * An index in this array is thus a window index modulo 32K.\r
- */\r
-\r
- Posf *head; /* Heads of the hash chains or NIL. */\r
-\r
- uInt ins_h; /* hash index of string to be inserted */\r
- uInt hash_size; /* number of elements in hash table */\r
- uInt hash_bits; /* log2(hash_size) */\r
- uInt hash_mask; /* hash_size-1 */\r
-\r
- uInt hash_shift;\r
- /* Number of bits by which ins_h must be shifted at each input\r
- * step. It must be such that after MIN_MATCH steps, the oldest\r
- * byte no longer takes part in the hash key, that is:\r
- * hash_shift * MIN_MATCH >= hash_bits\r
- */\r
-\r
- long block_start;\r
- /* Window position at the beginning of the current output block. Gets\r
- * negative when the window is moved backwards.\r
- */\r
-\r
- uInt match_length; /* length of best match */\r
- IPos prev_match; /* previous match */\r
- int match_available; /* set if previous match exists */\r
- uInt strstart; /* start of string to insert */\r
- uInt match_start; /* start of matching string */\r
- uInt lookahead; /* number of valid bytes ahead in window */\r
-\r
- uInt prev_length;\r
- /* Length of the best match at previous step. Matches not greater than this\r
- * are discarded. This is used in the lazy match evaluation.\r
- */\r
-\r
- uInt max_chain_length;\r
- /* To speed up deflation, hash chains are never searched beyond this\r
- * length. A higher limit improves compression ratio but degrades the\r
- * speed.\r
- */\r
-\r
- uInt max_lazy_match;\r
- /* Attempt to find a better match only when the current match is strictly\r
- * smaller than this value. This mechanism is used only for compression\r
- * levels >= 4.\r
- */\r
-# define max_insert_length max_lazy_match\r
- /* Insert new strings in the hash table only if the match length is not\r
- * greater than this length. This saves time but degrades compression.\r
- * max_insert_length is used only for compression levels <= 3.\r
- */\r
-\r
- int level; /* compression level (1..9) */\r
- int strategy; /* favor or force Huffman coding*/\r
-\r
- uInt good_match;\r
- /* Use a faster search when the previous match is longer than this */\r
-\r
- int nice_match; /* Stop searching when current match exceeds this */\r
-\r
- /* used by trees.c: */\r
- /* Didn't use ct_data typedef below to supress compiler warning */\r
- struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */\r
- struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */\r
- struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */\r
-\r
- struct tree_desc_s l_desc; /* desc. for literal tree */\r
- struct tree_desc_s d_desc; /* desc. for distance tree */\r
- struct tree_desc_s bl_desc; /* desc. for bit length tree */\r
-\r
- ush bl_count[MAX_BITS+1];\r
- /* number of codes at each bit length for an optimal tree */\r
-\r
- int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */\r
- int heap_len; /* number of elements in the heap */\r
- int heap_max; /* element of largest frequency */\r
- /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.\r
- * The same heap array is used to build all trees.\r
- */\r
-\r
- uch depth[2*L_CODES+1];\r
- /* Depth of each subtree used as tie breaker for trees of equal frequency\r
- */\r
-\r
- uchf *l_buf; /* buffer for literals or lengths */\r
-\r
- uInt lit_bufsize;\r
- /* Size of match buffer for literals/lengths. There are 4 reasons for\r
- * limiting lit_bufsize to 64K:\r
- * - frequencies can be kept in 16 bit counters\r
- * - if compression is not successful for the first block, all input\r
- * data is still in the window so we can still emit a stored block even\r
- * when input comes from standard input. (This can also be done for\r
- * all blocks if lit_bufsize is not greater than 32K.)\r
- * - if compression is not successful for a file smaller than 64K, we can\r
- * even emit a stored file instead of a stored block (saving 5 bytes).\r
- * This is applicable only for zip (not gzip or zlib).\r
- * - creating new Huffman trees less frequently may not provide fast\r
- * adaptation to changes in the input data statistics. (Take for\r
- * example a binary file with poorly compressible code followed by\r
- * a highly compressible string table.) Smaller buffer sizes give\r
- * fast adaptation but have of course the overhead of transmitting\r
- * trees more frequently.\r
- * - I can't count above 4\r
- */\r
-\r
- uInt last_lit; /* running index in l_buf */\r
-\r
- ushf *d_buf;\r
- /* Buffer for distances. To simplify the code, d_buf and l_buf have\r
- * the same number of elements. To use different lengths, an extra flag\r
- * array would be necessary.\r
- */\r
-\r
- ulg opt_len; /* bit length of current block with optimal trees */\r
- ulg static_len; /* bit length of current block with static trees */\r
- uInt matches; /* number of string matches in current block */\r
- int last_eob_len; /* bit length of EOB code for last block */\r
-\r
-#ifdef DEBUG\r
- ulg compressed_len; /* total bit length of compressed file mod 2^32 */\r
- ulg bits_sent; /* bit length of compressed data sent mod 2^32 */\r
-#endif\r
-\r
- ush bi_buf;\r
- /* Output buffer. bits are inserted starting at the bottom (least\r
- * significant bits).\r
- */\r
- int bi_valid;\r
- /* Number of valid bits in bi_buf. All bits above the last valid bit\r
- * are always zero.\r
- */\r
-\r
- ulg high_water;\r
- /* High water mark offset in window for initialized bytes -- bytes above\r
- * this are set to zero in order to avoid memory check warnings when\r
- * longest match routines access bytes past the input. This is then\r
- * updated to the new high water mark.\r
- */\r
-\r
-} FAR deflate_state;\r
-\r
-/* Output a byte on the stream.\r
- * IN assertion: there is enough room in pending_buf.\r
- */\r
-#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}\r
-\r
-\r
-#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)\r
-/* Minimum amount of lookahead, except at the end of the input file.\r
- * See deflate.c for comments about the MIN_MATCH+1.\r
- */\r
-\r
-#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)\r
-/* In order to simplify the code, particularly on 16 bit machines, match\r
- * distances are limited to MAX_DIST instead of WSIZE.\r
- */\r
-\r
-#define WIN_INIT MAX_MATCH\r
-/* Number of bytes after end of data in window to initialize in order to avoid\r
- memory checker errors from longest match routines */\r
-\r
- /* in trees.c */\r
-void ZLIB_INTERNAL _tr_init OF((deflate_state *s));\r
-int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));\r
-void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,\r
- ulg stored_len, int last));\r
-void ZLIB_INTERNAL _tr_align OF((deflate_state *s));\r
-void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,\r
- ulg stored_len, int last));\r
-\r
-#define d_code(dist) \\r
- ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])\r
-/* Mapping from a distance to a distance code. dist is the distance - 1 and\r
- * must not have side effects. _dist_code[256] and _dist_code[257] are never\r
- * used.\r
- */\r
-\r
-#ifndef DEBUG\r
-/* Inline versions of _tr_tally for speed: */\r
-\r
-#if defined(GEN_TREES_H) || !defined(STDC)\r
- extern uch ZLIB_INTERNAL _length_code[];\r
- extern uch ZLIB_INTERNAL _dist_code[];\r
-#else\r
- extern const uch ZLIB_INTERNAL _length_code[];\r
- extern const uch ZLIB_INTERNAL _dist_code[];\r
-#endif\r
-\r
-# define _tr_tally_lit(s, c, flush) \\r
- { uch cc = (c); \\r
- s->d_buf[s->last_lit] = 0; \\r
- s->l_buf[s->last_lit++] = cc; \\r
- s->dyn_ltree[cc].Freq++; \\r
- flush = (s->last_lit == s->lit_bufsize-1); \\r
- }\r
-# define _tr_tally_dist(s, distance, length, flush) \\r
- { uch len = (length); \\r
- ush dist = (distance); \\r
- s->d_buf[s->last_lit] = dist; \\r
- s->l_buf[s->last_lit++] = len; \\r
- dist--; \\r
- s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \\r
- s->dyn_dtree[d_code(dist)].Freq++; \\r
- flush = (s->last_lit == s->lit_bufsize-1); \\r
- }\r
-#else\r
-# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)\r
-# define _tr_tally_dist(s, distance, length, flush) \\r
- flush = _tr_tally(s, distance, length)\r
-#endif\r
-\r
-#endif /* DEFLATE_H */\r
+++ /dev/null
-/* gzguts.h -- zlib internal header definitions for gz* operations\r
- * Copyright (C) 2004, 2005, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-#ifdef _LARGEFILE64_SOURCE\r
-# ifndef _LARGEFILE_SOURCE\r
-# define _LARGEFILE_SOURCE 1\r
-# endif\r
-# ifdef _FILE_OFFSET_BITS\r
-# undef _FILE_OFFSET_BITS\r
-# endif\r
-#endif\r
-\r
-#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) && !defined(_WIN32)\r
-# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))\r
-#else\r
-# define ZLIB_INTERNAL\r
-#endif\r
-\r
-#include <stdio.h>\r
-#include "zlib.h"\r
-#ifdef STDC\r
-# include <string.h>\r
-# include <stdlib.h>\r
-# include <limits.h>\r
-#endif\r
-#include <fcntl.h>\r
-\r
-#ifdef NO_DEFLATE /* for compatibility with old definition */\r
-# define NO_GZCOMPRESS\r
-#endif\r
-\r
-#ifdef _MSC_VER\r
-# include <io.h>\r
-# define vsnprintf _vsnprintf\r
-#endif\r
-\r
-#ifndef local\r
-# define local static\r
-#endif\r
-/* compile with -Dlocal if your debugger can't find static symbols */\r
-\r
-/* gz* functions always use library allocation functions */\r
-#ifndef STDC\r
- extern voidp malloc OF((uInt size));\r
- extern void free OF((voidpf ptr));\r
-#endif\r
-\r
-/* get errno and strerror definition */\r
-#if defined UNDER_CE\r
-# include <windows.h>\r
-# define zstrerror() gz_strwinerror((DWORD)GetLastError())\r
-#else\r
-# ifdef STDC\r
-# include <errno.h>\r
-# define zstrerror() strerror(errno)\r
-# else\r
-# define zstrerror() "stdio error (consult errno)"\r
-# endif\r
-#endif\r
-\r
-/* provide prototypes for these when building zlib without LFS */\r
-#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0\r
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
- ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));\r
- ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));\r
- ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));\r
-#endif\r
-\r
-/* default i/o buffer size -- double this for output when reading */\r
-#define GZBUFSIZE 8192\r
-\r
-/* gzip modes, also provide a little integrity check on the passed structure */\r
-#define GZ_NONE 0\r
-#define GZ_READ 7247\r
-#define GZ_WRITE 31153\r
-#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */\r
-\r
-/* values for gz_state how */\r
-#define LOOK 0 /* look for a gzip header */\r
-#define COPY 1 /* copy input directly */\r
-#define GZIP 2 /* decompress a gzip stream */\r
-\r
-/* internal gzip file state data structure */\r
-typedef struct {\r
- /* used for both reading and writing */\r
- int mode; /* see gzip modes above */\r
- int fd; /* file descriptor */\r
- char *path; /* path or fd for error messages */\r
- z_off64_t pos; /* current position in uncompressed data */\r
- unsigned size; /* buffer size, zero if not allocated yet */\r
- unsigned want; /* requested buffer size, default is GZBUFSIZE */\r
- unsigned char *in; /* input buffer */\r
- unsigned char *out; /* output buffer (double-sized when reading) */\r
- unsigned char *next; /* next output data to deliver or write */\r
- /* just for reading */\r
- unsigned have; /* amount of output data unused at next */\r
- int eof; /* true if end of input file reached */\r
- z_off64_t start; /* where the gzip data started, for rewinding */\r
- z_off64_t raw; /* where the raw data started, for seeking */\r
- int how; /* 0: get header, 1: copy, 2: decompress */\r
- int direct; /* true if last read direct, false if gzip */\r
- /* just for writing */\r
- int level; /* compression level */\r
- int strategy; /* compression strategy */\r
- /* seek request */\r
- z_off64_t skip; /* amount to skip (already rewound if backwards) */\r
- int seek; /* true if seek request pending */\r
- /* error information */\r
- int err; /* error code */\r
- char *msg; /* error message */\r
- /* zlib inflate or deflate stream */\r
- z_stream strm; /* stream structure in-place (not a pointer) */\r
-} gz_state;\r
-typedef gz_state FAR *gz_statep;\r
-\r
-/* shared functions */\r
-void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));\r
-#if defined UNDER_CE\r
-char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));\r
-#endif\r
-\r
-/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t\r
- value -- needed when comparing unsigned to z_off64_t, which is signed\r
- (possible z_off64_t types off_t, off64_t, and long are all signed) */\r
-#ifdef INT_MAX\r
-# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)\r
-#else\r
-unsigned ZLIB_INTERNAL gz_intmax OF((void));\r
-# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())\r
-#endif\r
+++ /dev/null
-/* gzlib.c -- zlib functions common to reading and writing gzip files\r
- * Copyright (C) 2004, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-#include "gzguts.h"\r
-\r
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0\r
-# define LSEEK lseek64\r
-#else\r
-# define LSEEK lseek\r
-#endif\r
-\r
-/* Local functions */\r
-local void gz_reset OF((gz_statep));\r
-local gzFile gz_open OF((const char *, int, const char *));\r
-\r
-#if defined UNDER_CE\r
-\r
-/* Map the Windows error number in ERROR to a locale-dependent error message\r
- string and return a pointer to it. Typically, the values for ERROR come\r
- from GetLastError.\r
-\r
- The string pointed to shall not be modified by the application, but may be\r
- overwritten by a subsequent call to gz_strwinerror\r
-\r
- The gz_strwinerror function does not change the current setting of\r
- GetLastError. */\r
-char ZLIB_INTERNAL *gz_strwinerror (error)\r
- DWORD error;\r
-{\r
- static char buf[1024];\r
-\r
- wchar_t *msgbuf;\r
- DWORD lasterr = GetLastError();\r
- DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM\r
- | FORMAT_MESSAGE_ALLOCATE_BUFFER,\r
- NULL,\r
- error,\r
- 0, /* Default language */\r
- (LPVOID)&msgbuf,\r
- 0,\r
- NULL);\r
- if (chars != 0) {\r
- /* If there is an \r\n appended, zap it. */\r
- if (chars >= 2\r
- && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {\r
- chars -= 2;\r
- msgbuf[chars] = 0;\r
- }\r
-\r
- if (chars > sizeof (buf) - 1) {\r
- chars = sizeof (buf) - 1;\r
- msgbuf[chars] = 0;\r
- }\r
-\r
- wcstombs(buf, msgbuf, chars + 1);\r
- LocalFree(msgbuf);\r
- }\r
- else {\r
- sprintf(buf, "unknown win32 error (%ld)", error);\r
- }\r
-\r
- SetLastError(lasterr);\r
- return buf;\r
-}\r
-\r
-#endif /* UNDER_CE */\r
-\r
-/* Reset gzip file state */\r
-local void gz_reset(state)\r
- gz_statep state;\r
-{\r
- if (state->mode == GZ_READ) { /* for reading ... */\r
- state->have = 0; /* no output data available */\r
- state->eof = 0; /* not at end of file */\r
- state->how = LOOK; /* look for gzip header */\r
- state->direct = 1; /* default for empty file */\r
- }\r
- state->seek = 0; /* no seek request pending */\r
- gz_error(state, Z_OK, NULL); /* clear error */\r
- state->pos = 0; /* no uncompressed data yet */\r
- state->strm.avail_in = 0; /* no input data yet */\r
-}\r
-\r
-/* Open a gzip file either by name or file descriptor. */\r
-local gzFile gz_open(path, fd, mode)\r
- const char *path;\r
- int fd;\r
- const char *mode;\r
-{\r
- gz_statep state;\r
-\r
- /* allocate gzFile structure to return */\r
- state = malloc(sizeof(gz_state));\r
- if (state == NULL)\r
- return NULL;\r
- state->size = 0; /* no buffers allocated yet */\r
- state->want = GZBUFSIZE; /* requested buffer size */\r
- state->msg = NULL; /* no error message yet */\r
-\r
- /* interpret mode */\r
- state->mode = GZ_NONE;\r
- state->level = Z_DEFAULT_COMPRESSION;\r
- state->strategy = Z_DEFAULT_STRATEGY;\r
- while (*mode) {\r
- if (*mode >= '0' && *mode <= '9')\r
- state->level = *mode - '0';\r
- else\r
- switch (*mode) {\r
- case 'r':\r
- state->mode = GZ_READ;\r
- break;\r
-#ifndef NO_GZCOMPRESS\r
- case 'w':\r
- state->mode = GZ_WRITE;\r
- break;\r
- case 'a':\r
- state->mode = GZ_APPEND;\r
- break;\r
-#endif\r
- case '+': /* can't read and write at the same time */\r
- free(state);\r
- return NULL;\r
- case 'b': /* ignore -- will request binary anyway */\r
- break;\r
- case 'f':\r
- state->strategy = Z_FILTERED;\r
- break;\r
- case 'h':\r
- state->strategy = Z_HUFFMAN_ONLY;\r
- break;\r
- case 'R':\r
- state->strategy = Z_RLE;\r
- break;\r
- case 'F':\r
- state->strategy = Z_FIXED;\r
- default: /* could consider as an error, but just ignore */\r
- ;\r
- }\r
- mode++;\r
- }\r
-\r
- /* must provide an "r", "w", or "a" */\r
- if (state->mode == GZ_NONE) {\r
- free(state);\r
- return NULL;\r
- }\r
-\r
- /* save the path name for error messages */\r
- state->path = malloc(strlen(path) + 1);\r
- if (state->path == NULL) {\r
- free(state);\r
- return NULL;\r
- }\r
- strcpy(state->path, path);\r
-\r
- /* open the file with the appropriate mode (or just use fd) */\r
- state->fd = fd != -1 ? fd :\r
- open(path,\r
-#ifdef O_LARGEFILE\r
- O_LARGEFILE |\r
-#endif\r
-#ifdef O_BINARY\r
- O_BINARY |\r
-#endif\r
- (state->mode == GZ_READ ?\r
- O_RDONLY :\r
- (O_WRONLY | O_CREAT | (\r
- state->mode == GZ_WRITE ?\r
- O_TRUNC :\r
- O_APPEND))),\r
- 0666);\r
- if (state->fd == -1) {\r
- free(state->path);\r
- free(state);\r
- return NULL;\r
- }\r
- if (state->mode == GZ_APPEND)\r
- state->mode = GZ_WRITE; /* simplify later checks */\r
-\r
- /* save the current position for rewinding (only if reading) */\r
- if (state->mode == GZ_READ) {\r
- state->start = LSEEK(state->fd, 0, SEEK_CUR);\r
- if (state->start == -1) state->start = 0;\r
- }\r
-\r
- /* initialize stream */\r
- gz_reset(state);\r
-\r
- /* return stream */\r
- return (gzFile)state;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-gzFile ZEXPORT gzopen(path, mode)\r
- const char *path;\r
- const char *mode;\r
-{\r
- return gz_open(path, -1, mode);\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-gzFile ZEXPORT gzopen64(path, mode)\r
- const char *path;\r
- const char *mode;\r
-{\r
- return gz_open(path, -1, mode);\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-gzFile ZEXPORT gzdopen(fd, mode)\r
- int fd;\r
- const char *mode;\r
-{\r
- char *path; /* identifier for error messages */\r
- gzFile gz;\r
-\r
- if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)\r
- return NULL;\r
- sprintf(path, "<fd:%d>", fd); /* for debugging */\r
- gz = gz_open(path, fd, mode);\r
- free(path);\r
- return gz;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzbuffer(file, size)\r
- gzFile file;\r
- unsigned size;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return -1;\r
-\r
- /* make sure we haven't already allocated memory */\r
- if (state->size != 0)\r
- return -1;\r
-\r
- /* check and set requested size */\r
- if (size == 0)\r
- return -1;\r
- state->want = size;\r
- return 0;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzrewind(file)\r
- gzFile file;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're reading and that there's no error */\r
- if (state->mode != GZ_READ || state->err != Z_OK)\r
- return -1;\r
-\r
- /* back up and start over */\r
- if (LSEEK(state->fd, state->start, SEEK_SET) == -1)\r
- return -1;\r
- gz_reset(state);\r
- return 0;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-z_off64_t ZEXPORT gzseek64(file, offset, whence)\r
- gzFile file;\r
- z_off64_t offset;\r
- int whence;\r
-{\r
- unsigned n;\r
- z_off64_t ret;\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return -1;\r
-\r
- /* check that there's no error */\r
- if (state->err != Z_OK)\r
- return -1;\r
-\r
- /* can only seek from start or relative to current position */\r
- if (whence != SEEK_SET && whence != SEEK_CUR)\r
- return -1;\r
-\r
- /* normalize offset to a SEEK_CUR specification */\r
- if (whence == SEEK_SET)\r
- offset -= state->pos;\r
- else if (state->seek)\r
- offset += state->skip;\r
- state->seek = 0;\r
-\r
- /* if within raw area while reading, just go there */\r
- if (state->mode == GZ_READ && state->how == COPY &&\r
- state->pos + offset >= state->raw) {\r
- ret = LSEEK(state->fd, offset - state->have, SEEK_CUR);\r
- if (ret == -1)\r
- return -1;\r
- state->have = 0;\r
- state->eof = 0;\r
- state->seek = 0;\r
- gz_error(state, Z_OK, NULL);\r
- state->strm.avail_in = 0;\r
- state->pos += offset;\r
- return state->pos;\r
- }\r
-\r
- /* calculate skip amount, rewinding if needed for back seek when reading */\r
- if (offset < 0) {\r
- if (state->mode != GZ_READ) /* writing -- can't go backwards */\r
- return -1;\r
- offset += state->pos;\r
- if (offset < 0) /* before start of file! */\r
- return -1;\r
- if (gzrewind(file) == -1) /* rewind, then skip to offset */\r
- return -1;\r
- }\r
-\r
- /* if reading, skip what's in output buffer (one less gzgetc() check) */\r
- if (state->mode == GZ_READ) {\r
- n = GT_OFF(state->have) || (z_off64_t)state->have > offset ?\r
- (unsigned)offset : state->have;\r
- state->have -= n;\r
- state->next += n;\r
- state->pos += n;\r
- offset -= n;\r
- }\r
-\r
- /* request skip (if not zero) */\r
- if (offset) {\r
- state->seek = 1;\r
- state->skip = offset;\r
- }\r
- return state->pos + offset;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-z_off_t ZEXPORT gzseek(file, offset, whence)\r
- gzFile file;\r
- z_off_t offset;\r
- int whence;\r
-{\r
- z_off64_t ret;\r
-\r
- ret = gzseek64(file, (z_off64_t)offset, whence);\r
- return ret == (z_off_t)ret ? (z_off_t)ret : -1;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-z_off64_t ZEXPORT gztell64(file)\r
- gzFile file;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return -1;\r
-\r
- /* return position */\r
- return state->pos + (state->seek ? state->skip : 0);\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-z_off_t ZEXPORT gztell(file)\r
- gzFile file;\r
-{\r
- z_off64_t ret;\r
-\r
- ret = gztell64(file);\r
- return ret == (z_off_t)ret ? (z_off_t)ret : -1;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-z_off64_t ZEXPORT gzoffset64(file)\r
- gzFile file;\r
-{\r
- z_off64_t offset;\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return -1;\r
-\r
- /* compute and return effective offset in file */\r
- offset = LSEEK(state->fd, 0, SEEK_CUR);\r
- if (offset == -1)\r
- return -1;\r
- if (state->mode == GZ_READ) /* reading */\r
- offset -= state->strm.avail_in; /* don't count buffered input */\r
- return offset;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-z_off_t ZEXPORT gzoffset(file)\r
- gzFile file;\r
-{\r
- z_off64_t ret;\r
-\r
- ret = gzoffset64(file);\r
- return ret == (z_off_t)ret ? (z_off_t)ret : -1;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzeof(file)\r
- gzFile file;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return 0;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return 0;\r
-\r
- /* return end-of-file state */\r
- return state->mode == GZ_READ ?\r
- (state->eof && state->strm.avail_in == 0 && state->have == 0) : 0;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-const char * ZEXPORT gzerror(file, errnum)\r
- gzFile file;\r
- int *errnum;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return NULL;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return NULL;\r
-\r
- /* return error information */\r
- if (errnum != NULL)\r
- *errnum = state->err;\r
- return state->msg == NULL ? "" : state->msg;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-void ZEXPORT gzclearerr(file)\r
- gzFile file;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure and check integrity */\r
- if (file == NULL)\r
- return;\r
- state = (gz_statep)file;\r
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)\r
- return;\r
-\r
- /* clear error and end-of-file */\r
- if (state->mode == GZ_READ)\r
- state->eof = 0;\r
- gz_error(state, Z_OK, NULL);\r
-}\r
-\r
-/* Create an error message in allocated memory and set state->err and\r
- state->msg accordingly. Free any previous error message already there. Do\r
- not try to free or allocate space if the error is Z_MEM_ERROR (out of\r
- memory). Simply save the error message as a static string. If there is an\r
- allocation failure constructing the error message, then convert the error to\r
- out of memory. */\r
-void ZLIB_INTERNAL gz_error(state, err, msg)\r
- gz_statep state;\r
- int err;\r
- const char *msg;\r
-{\r
- /* free previously allocated message and clear */\r
- if (state->msg != NULL) {\r
- if (state->err != Z_MEM_ERROR)\r
- free(state->msg);\r
- state->msg = NULL;\r
- }\r
-\r
- /* set error code, and if no message, then done */\r
- state->err = err;\r
- if (msg == NULL)\r
- return;\r
-\r
- /* for an out of memory error, save as static string */\r
- if (err == Z_MEM_ERROR) {\r
- state->msg = (char *)msg;\r
- return;\r
- }\r
-\r
- /* construct error message with path */\r
- if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {\r
- state->err = Z_MEM_ERROR;\r
- state->msg = (char *)"out of memory";\r
- return;\r
- }\r
- strcpy(state->msg, state->path);\r
- strcat(state->msg, ": ");\r
- strcat(state->msg, msg);\r
- return;\r
-}\r
-\r
-#ifndef INT_MAX\r
-/* portably return maximum value for an int (when limits.h presumed not\r
- available) -- we need to do this to cover cases where 2's complement not\r
- used, since C standard permits 1's complement and sign-bit representations,\r
- otherwise we could just use ((unsigned)-1) >> 1 */\r
-unsigned ZLIB_INTERNAL gz_intmax()\r
-{\r
- unsigned p, q;\r
-\r
- p = 1;\r
- do {\r
- q = p;\r
- p <<= 1;\r
- p++;\r
- } while (p > q);\r
- return q >> 1;\r
-}\r
-#endif\r
+++ /dev/null
-/* gzread.c -- zlib functions for reading gzip files\r
- * Copyright (C) 2004, 2005, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-#include "gzguts.h"\r
-\r
-/* Local functions */\r
-local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));\r
-local int gz_avail OF((gz_statep));\r
-local int gz_next4 OF((gz_statep, unsigned long *));\r
-local int gz_head OF((gz_statep));\r
-local int gz_decomp OF((gz_statep));\r
-local int gz_make OF((gz_statep));\r
-local int gz_skip OF((gz_statep, z_off64_t));\r
-\r
-/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from\r
- state->fd, and update state->eof, state->err, and state->msg as appropriate.\r
- This function needs to loop on read(), since read() is not guaranteed to\r
- read the number of bytes requested, depending on the type of descriptor. */\r
-local int gz_load(state, buf, len, have)\r
- gz_statep state;\r
- unsigned char *buf;\r
- unsigned len;\r
- unsigned *have;\r
-{\r
- int ret;\r
-\r
- *have = 0;\r
- do {\r
- ret = read(state->fd, buf + *have, len - *have);\r
- if (ret <= 0)\r
- break;\r
- *have += ret;\r
- } while (*have < len);\r
- if (ret < 0) {\r
- gz_error(state, Z_ERRNO, zstrerror());\r
- return -1;\r
- }\r
- if (ret == 0)\r
- state->eof = 1;\r
- return 0;\r
-}\r
-\r
-/* Load up input buffer and set eof flag if last data loaded -- return -1 on\r
- error, 0 otherwise. Note that the eof flag is set when the end of the input\r
- file is reached, even though there may be unused data in the buffer. Once\r
- that data has been used, no more attempts will be made to read the file.\r
- gz_avail() assumes that strm->avail_in == 0. */\r
-local int gz_avail(state)\r
- gz_statep state;\r
-{\r
- z_streamp strm = &(state->strm);\r
-\r
- if (state->err != Z_OK)\r
- return -1;\r
- if (state->eof == 0) {\r
- if (gz_load(state, state->in, state->size,\r
- (unsigned *)&(strm->avail_in)) == -1)\r
- return -1;\r
- strm->next_in = state->in;\r
- }\r
- return 0;\r
-}\r
-\r
-/* Get next byte from input, or -1 if end or error. */\r
-#define NEXT() ((strm->avail_in == 0 && gz_avail(state) == -1) ? -1 : \\r
- (strm->avail_in == 0 ? -1 : \\r
- (strm->avail_in--, *(strm->next_in)++)))\r
-\r
-/* Get a four-byte little-endian integer and return 0 on success and the value\r
- in *ret. Otherwise -1 is returned and *ret is not modified. */\r
-local int gz_next4(state, ret)\r
- gz_statep state;\r
- unsigned long *ret;\r
-{\r
- int ch;\r
- unsigned long val;\r
- z_streamp strm = &(state->strm);\r
-\r
- val = NEXT();\r
- val += (unsigned)NEXT() << 8;\r
- val += (unsigned long)NEXT() << 16;\r
- ch = NEXT();\r
- if (ch == -1)\r
- return -1;\r
- val += (unsigned long)ch << 24;\r
- *ret = val;\r
- return 0;\r
-}\r
-\r
-/* Look for gzip header, set up for inflate or copy. state->have must be zero.\r
- If this is the first time in, allocate required memory. state->how will be\r
- left unchanged if there is no more input data available, will be set to COPY\r
- if there is no gzip header and direct copying will be performed, or it will\r
- be set to GZIP for decompression, and the gzip header will be skipped so\r
- that the next available input data is the raw deflate stream. If direct\r
- copying, then leftover input data from the input buffer will be copied to\r
- the output buffer. In that case, all further file reads will be directly to\r
- either the output buffer or a user buffer. If decompressing, the inflate\r
- state and the check value will be initialized. gz_head() will return 0 on\r
- success or -1 on failure. Failures may include read errors or gzip header\r
- errors. */\r
-local int gz_head(state)\r
- gz_statep state;\r
-{\r
- z_streamp strm = &(state->strm);\r
- int flags;\r
- unsigned len;\r
-\r
- /* allocate read buffers and inflate memory */\r
- if (state->size == 0) {\r
- /* allocate buffers */\r
- state->in = malloc(state->want);\r
- state->out = malloc(state->want << 1);\r
- if (state->in == NULL || state->out == NULL) {\r
- if (state->out != NULL)\r
- free(state->out);\r
- if (state->in != NULL)\r
- free(state->in);\r
- gz_error(state, Z_MEM_ERROR, "out of memory");\r
- return -1;\r
- }\r
- state->size = state->want;\r
-\r
- /* allocate inflate memory */\r
- state->strm.zalloc = Z_NULL;\r
- state->strm.zfree = Z_NULL;\r
- state->strm.opaque = Z_NULL;\r
- state->strm.avail_in = 0;\r
- state->strm.next_in = Z_NULL;\r
- if (inflateInit2(&(state->strm), -15) != Z_OK) { /* raw inflate */\r
- free(state->out);\r
- free(state->in);\r
- state->size = 0;\r
- gz_error(state, Z_MEM_ERROR, "out of memory");\r
- return -1;\r
- }\r
- }\r
-\r
- /* get some data in the input buffer */\r
- if (strm->avail_in == 0) {\r
- if (gz_avail(state) == -1)\r
- return -1;\r
- if (strm->avail_in == 0)\r
- return 0;\r
- }\r
-\r
- /* look for the gzip magic header bytes 31 and 139 */\r
- if (strm->next_in[0] == 31) {\r
- strm->avail_in--;\r
- strm->next_in++;\r
- if (strm->avail_in == 0 && gz_avail(state) == -1)\r
- return -1;\r
- if (strm->avail_in && strm->next_in[0] == 139) {\r
- /* we have a gzip header, woo hoo! */\r
- strm->avail_in--;\r
- strm->next_in++;\r
-\r
- /* skip rest of header */\r
- if (NEXT() != 8) { /* compression method */\r
- gz_error(state, Z_DATA_ERROR, "unknown compression method");\r
- return -1;\r
- }\r
- flags = NEXT();\r
- if (flags & 0xe0) { /* reserved flag bits */\r
- gz_error(state, Z_DATA_ERROR, "unknown header flags set");\r
- return -1;\r
- }\r
- NEXT(); /* modification time */\r
- NEXT();\r
- NEXT();\r
- NEXT();\r
- NEXT(); /* extra flags */\r
- NEXT(); /* operating system */\r
- if (flags & 4) { /* extra field */\r
- len = (unsigned)NEXT();\r
- len += (unsigned)NEXT() << 8;\r
- while (len--)\r
- if (NEXT() < 0)\r
- break;\r
- }\r
- if (flags & 8) /* file name */\r
- while (NEXT() > 0)\r
- ;\r
- if (flags & 16) /* comment */\r
- while (NEXT() > 0)\r
- ;\r
- if (flags & 2) { /* header crc */\r
- NEXT();\r
- NEXT();\r
- }\r
- /* an unexpected end of file is not checked for here -- it will be\r
- noticed on the first request for uncompressed data */\r
-\r
- /* set up for decompression */\r
- inflateReset(strm);\r
- strm->adler = crc32(0L, Z_NULL, 0);\r
- state->how = GZIP;\r
- state->direct = 0;\r
- return 0;\r
- }\r
- else {\r
- /* not a gzip file -- save first byte (31) and fall to raw i/o */\r
- state->out[0] = 31;\r
- state->have = 1;\r
- }\r
- }\r
-\r
- /* doing raw i/o, save start of raw data for seeking, copy any leftover\r
- input to output -- this assumes that the output buffer is larger than\r
- the input buffer, which also assures space for gzungetc() */\r
- state->raw = state->pos;\r
- state->next = state->out;\r
- if (strm->avail_in) {\r
- memcpy(state->next + state->have, strm->next_in, strm->avail_in);\r
- state->have += strm->avail_in;\r
- strm->avail_in = 0;\r
- }\r
- state->how = COPY;\r
- state->direct = 1;\r
- return 0;\r
-}\r
-\r
-/* Decompress from input to the provided next_out and avail_out in the state.\r
- If the end of the compressed data is reached, then verify the gzip trailer\r
- check value and length (modulo 2^32). state->have and state->next are set\r
- to point to the just decompressed data, and the crc is updated. If the\r
- trailer is verified, state->how is reset to LOOK to look for the next gzip\r
- stream or raw data, once state->have is depleted. Returns 0 on success, -1\r
- on failure. Failures may include invalid compressed data or a failed gzip\r
- trailer verification. */\r
-local int gz_decomp(state)\r
- gz_statep state;\r
-{\r
- int ret;\r
- unsigned had;\r
- unsigned long crc, len;\r
- z_streamp strm = &(state->strm);\r
-\r
- /* fill output buffer up to end of deflate stream */\r
- had = strm->avail_out;\r
- do {\r
- /* get more input for inflate() */\r
- if (strm->avail_in == 0 && gz_avail(state) == -1)\r
- return -1;\r
- if (strm->avail_in == 0) {\r
- gz_error(state, Z_DATA_ERROR, "unexpected end of file");\r
- return -1;\r
- }\r
-\r
- /* decompress and handle errors */\r
- ret = inflate(strm, Z_NO_FLUSH);\r
- if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {\r
- gz_error(state, Z_STREAM_ERROR,\r
- "internal error: inflate stream corrupt");\r
- return -1;\r
- }\r
- if (ret == Z_MEM_ERROR) {\r
- gz_error(state, Z_MEM_ERROR, "out of memory");\r
- return -1;\r
- }\r
- if (ret == Z_DATA_ERROR) { /* deflate stream invalid */\r
- gz_error(state, Z_DATA_ERROR,\r
- strm->msg == NULL ? "compressed data error" : strm->msg);\r
- return -1;\r
- }\r
- } while (strm->avail_out && ret != Z_STREAM_END);\r
-\r
- /* update available output and crc check value */\r
- state->have = had - strm->avail_out;\r
- state->next = strm->next_out - state->have;\r
- strm->adler = crc32(strm->adler, state->next, state->have);\r
-\r
- /* check gzip trailer if at end of deflate stream */\r
- if (ret == Z_STREAM_END) {\r
- if (gz_next4(state, &crc) == -1 || gz_next4(state, &len) == -1) {\r
- gz_error(state, Z_DATA_ERROR, "unexpected end of file");\r
- return -1;\r
- }\r
- if (crc != strm->adler) {\r
- gz_error(state, Z_DATA_ERROR, "incorrect data check");\r
- return -1;\r
- }\r
- if (len != (strm->total_out & 0xffffffffL)) {\r
- gz_error(state, Z_DATA_ERROR, "incorrect length check");\r
- return -1;\r
- }\r
- state->how = LOOK; /* ready for next stream, once have is 0 (leave\r
- state->direct unchanged to remember how) */\r
- }\r
-\r
- /* good decompression */\r
- return 0;\r
-}\r
-\r
-/* Make data and put in the output buffer. Assumes that state->have == 0.\r
- Data is either copied from the input file or decompressed from the input\r
- file depending on state->how. If state->how is LOOK, then a gzip header is\r
- looked for (and skipped if found) to determine wither to copy or decompress.\r
- Returns -1 on error, otherwise 0. gz_make() will leave state->have as COPY\r
- or GZIP unless the end of the input file has been reached and all data has\r
- been processed. */\r
-local int gz_make(state)\r
- gz_statep state;\r
-{\r
- z_streamp strm = &(state->strm);\r
-\r
- if (state->how == LOOK) { /* look for gzip header */\r
- if (gz_head(state) == -1)\r
- return -1;\r
- if (state->have) /* got some data from gz_head() */\r
- return 0;\r
- }\r
- if (state->how == COPY) { /* straight copy */\r
- if (gz_load(state, state->out, state->size << 1, &(state->have)) == -1)\r
- return -1;\r
- state->next = state->out;\r
- }\r
- else if (state->how == GZIP) { /* decompress */\r
- strm->avail_out = state->size << 1;\r
- strm->next_out = state->out;\r
- if (gz_decomp(state) == -1)\r
- return -1;\r
- }\r
- return 0;\r
-}\r
-\r
-/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */\r
-local int gz_skip(state, len)\r
- gz_statep state;\r
- z_off64_t len;\r
-{\r
- unsigned n;\r
-\r
- /* skip over len bytes or reach end-of-file, whichever comes first */\r
- while (len)\r
- /* skip over whatever is in output buffer */\r
- if (state->have) {\r
- n = GT_OFF(state->have) || (z_off64_t)state->have > len ?\r
- (unsigned)len : state->have;\r
- state->have -= n;\r
- state->next += n;\r
- state->pos += n;\r
- len -= n;\r
- }\r
-\r
- /* output buffer empty -- return if we're at the end of the input */\r
- else if (state->eof && state->strm.avail_in == 0)\r
- break;\r
-\r
- /* need more data to skip -- load up output buffer */\r
- else {\r
- /* get more output, looking for header if required */\r
- if (gz_make(state) == -1)\r
- return -1;\r
- }\r
- return 0;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzread(file, buf, len)\r
- gzFile file;\r
- voidp buf;\r
- unsigned len;\r
-{\r
- unsigned got, n;\r
- gz_statep state;\r
- z_streamp strm;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- strm = &(state->strm);\r
-\r
- /* check that we're reading and that there's no error */\r
- if (state->mode != GZ_READ || state->err != Z_OK)\r
- return -1;\r
-\r
- /* since an int is returned, make sure len fits in one, otherwise return\r
- with an error (this avoids the flaw in the interface) */\r
- if ((int)len < 0) {\r
- gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");\r
- return -1;\r
- }\r
-\r
- /* if len is zero, avoid unnecessary operations */\r
- if (len == 0)\r
- return 0;\r
-\r
- /* process a skip request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_skip(state, state->skip) == -1)\r
- return -1;\r
- }\r
-\r
- /* get len bytes to buf, or less than len if at the end */\r
- got = 0;\r
- do {\r
- /* first just try copying data from the output buffer */\r
- if (state->have) {\r
- n = state->have > len ? len : state->have;\r
- memcpy(buf, state->next, n);\r
- state->next += n;\r
- state->have -= n;\r
- }\r
-\r
- /* output buffer empty -- return if we're at the end of the input */\r
- else if (state->eof && strm->avail_in == 0)\r
- break;\r
-\r
- /* need output data -- for small len or new stream load up our output\r
- buffer */\r
- else if (state->how == LOOK || len < (state->size << 1)) {\r
- /* get more output, looking for header if required */\r
- if (gz_make(state) == -1)\r
- return -1;\r
- continue; /* no progress yet -- go back to memcpy() above */\r
- /* the copy above assures that we will leave with space in the\r
- output buffer, allowing at least one gzungetc() to succeed */\r
- }\r
-\r
- /* large len -- read directly into user buffer */\r
- else if (state->how == COPY) { /* read directly */\r
- if (gz_load(state, buf, len, &n) == -1)\r
- return -1;\r
- }\r
-\r
- /* large len -- decompress directly into user buffer */\r
- else { /* state->how == GZIP */\r
- strm->avail_out = len;\r
- strm->next_out = buf;\r
- if (gz_decomp(state) == -1)\r
- return -1;\r
- n = state->have;\r
- state->have = 0;\r
- }\r
-\r
- /* update progress */\r
- len -= n;\r
- buf = (char *)buf + n;\r
- got += n;\r
- state->pos += n;\r
- } while (len);\r
-\r
- /* return number of bytes read into user buffer (will fit in int) */\r
- return (int)got;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzgetc(file)\r
- gzFile file;\r
-{\r
- int ret;\r
- unsigned char buf[1];\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're reading and that there's no error */\r
- if (state->mode != GZ_READ || state->err != Z_OK)\r
- return -1;\r
-\r
- /* try output buffer (no need to check for skip request) */\r
- if (state->have) {\r
- state->have--;\r
- state->pos++;\r
- return *(state->next)++;\r
- }\r
-\r
- /* nothing there -- try gzread() */\r
- ret = gzread(file, buf, 1);\r
- return ret < 1 ? -1 : buf[0];\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzungetc(c, file)\r
- int c;\r
- gzFile file;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're reading and that there's no error */\r
- if (state->mode != GZ_READ || state->err != Z_OK)\r
- return -1;\r
-\r
- /* process a skip request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_skip(state, state->skip) == -1)\r
- return -1;\r
- }\r
-\r
- /* can't push EOF */\r
- if (c < 0)\r
- return -1;\r
-\r
- /* if output buffer empty, put byte at end (allows more pushing) */\r
- if (state->have == 0) {\r
- state->have = 1;\r
- state->next = state->out + (state->size << 1) - 1;\r
- state->next[0] = c;\r
- state->pos--;\r
- return c;\r
- }\r
-\r
- /* if no room, give up (must have already done a gzungetc()) */\r
- if (state->have == (state->size << 1)) {\r
- gz_error(state, Z_BUF_ERROR, "out of room to push characters");\r
- return -1;\r
- }\r
-\r
- /* slide output data if needed and insert byte before existing data */\r
- if (state->next == state->out) {\r
- unsigned char *src = state->out + state->have;\r
- unsigned char *dest = state->out + (state->size << 1);\r
- while (src > state->out)\r
- *--dest = *--src;\r
- state->next = dest;\r
- }\r
- state->have++;\r
- state->next--;\r
- state->next[0] = c;\r
- state->pos--;\r
- return c;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-char * ZEXPORT gzgets(file, buf, len)\r
- gzFile file;\r
- char *buf;\r
- int len;\r
-{\r
- unsigned left, n;\r
- char *str;\r
- unsigned char *eol;\r
- gz_statep state;\r
-\r
- /* check parameters and get internal structure */\r
- if (file == NULL || buf == NULL || len < 1)\r
- return NULL;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're reading and that there's no error */\r
- if (state->mode != GZ_READ || state->err != Z_OK)\r
- return NULL;\r
-\r
- /* process a skip request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_skip(state, state->skip) == -1)\r
- return NULL;\r
- }\r
-\r
- /* copy output bytes up to new line or len - 1, whichever comes first --\r
- append a terminating zero to the string (we don't check for a zero in\r
- the contents, let the user worry about that) */\r
- str = buf;\r
- left = (unsigned)len - 1;\r
- if (left) do {\r
- /* assure that something is in the output buffer */\r
- if (state->have == 0) {\r
- if (gz_make(state) == -1)\r
- return NULL; /* error */\r
- if (state->have == 0) { /* end of file */\r
- if (buf == str) /* got bupkus */\r
- return NULL;\r
- break; /* got something -- return it */\r
- }\r
- }\r
-\r
- /* look for end-of-line in current output buffer */\r
- n = state->have > left ? left : state->have;\r
- eol = memchr(state->next, '\n', n);\r
- if (eol != NULL)\r
- n = (unsigned)(eol - state->next) + 1;\r
-\r
- /* copy through end-of-line, or remainder if not found */\r
- memcpy(buf, state->next, n);\r
- state->have -= n;\r
- state->next += n;\r
- state->pos += n;\r
- left -= n;\r
- buf += n;\r
- } while (left && eol == NULL);\r
-\r
- /* found end-of-line or out of space -- terminate string and return it */\r
- buf[0] = 0;\r
- return str;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzdirect(file)\r
- gzFile file;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return 0;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're reading */\r
- if (state->mode != GZ_READ)\r
- return 0;\r
-\r
- /* if the state is not known, but we can find out, then do so (this is\r
- mainly for right after a gzopen() or gzdopen()) */\r
- if (state->how == LOOK && state->have == 0)\r
- (void)gz_head(state);\r
-\r
- /* return 1 if reading direct, 0 if decompressing a gzip stream */\r
- return state->direct;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzclose_r(file)\r
- gzFile file;\r
-{\r
- int ret;\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return Z_STREAM_ERROR;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're reading */\r
- if (state->mode != GZ_READ)\r
- return Z_STREAM_ERROR;\r
-\r
- /* free memory and close file */\r
- if (state->size) {\r
- inflateEnd(&(state->strm));\r
- free(state->out);\r
- free(state->in);\r
- }\r
- gz_error(state, Z_OK, NULL);\r
- free(state->path);\r
- ret = close(state->fd);\r
- free(state);\r
- return ret ? Z_ERRNO : Z_OK;\r
-}\r
+++ /dev/null
-/* gzwrite.c -- zlib functions for writing gzip files\r
- * Copyright (C) 2004, 2005, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-#include "gzguts.h"\r
-\r
-/* Local functions */\r
-local int gz_init OF((gz_statep));\r
-local int gz_comp OF((gz_statep, int));\r
-local int gz_zero OF((gz_statep, z_off64_t));\r
-\r
-/* Initialize state for writing a gzip file. Mark initialization by setting\r
- state->size to non-zero. Return -1 on failure or 0 on success. */\r
-local int gz_init(state)\r
- gz_statep state;\r
-{\r
- int ret;\r
- z_streamp strm = &(state->strm);\r
-\r
- /* allocate input and output buffers */\r
- state->in = malloc(state->want);\r
- state->out = malloc(state->want);\r
- if (state->in == NULL || state->out == NULL) {\r
- if (state->out != NULL)\r
- free(state->out);\r
- if (state->in != NULL)\r
- free(state->in);\r
- gz_error(state, Z_MEM_ERROR, "out of memory");\r
- return -1;\r
- }\r
-\r
- /* allocate deflate memory, set up for gzip compression */\r
- strm->zalloc = Z_NULL;\r
- strm->zfree = Z_NULL;\r
- strm->opaque = Z_NULL;\r
- ret = deflateInit2(strm, state->level, Z_DEFLATED,\r
- 15 + 16, 8, state->strategy);\r
- if (ret != Z_OK) {\r
- free(state->in);\r
- gz_error(state, Z_MEM_ERROR, "out of memory");\r
- return -1;\r
- }\r
-\r
- /* mark state as initialized */\r
- state->size = state->want;\r
-\r
- /* initialize write buffer */\r
- strm->avail_out = state->size;\r
- strm->next_out = state->out;\r
- state->next = strm->next_out;\r
- return 0;\r
-}\r
-\r
-/* Compress whatever is at avail_in and next_in and write to the output file.\r
- Return -1 if there is an error writing to the output file, otherwise 0.\r
- flush is assumed to be a valid deflate() flush value. If flush is Z_FINISH,\r
- then the deflate() state is reset to start a new gzip stream. */\r
-local int gz_comp(state, flush)\r
- gz_statep state;\r
- int flush;\r
-{\r
- int ret, got;\r
- unsigned have;\r
- z_streamp strm = &(state->strm);\r
-\r
- /* allocate memory if this is the first time through */\r
- if (state->size == 0 && gz_init(state) == -1)\r
- return -1;\r
-\r
- /* run deflate() on provided input until it produces no more output */\r
- ret = Z_OK;\r
- do {\r
- /* write out current buffer contents if full, or if flushing, but if\r
- doing Z_FINISH then don't write until we get to Z_STREAM_END */\r
- if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&\r
- (flush != Z_FINISH || ret == Z_STREAM_END))) {\r
- have = (unsigned)(strm->next_out - state->next);\r
- if (have && ((got = write(state->fd, state->next, have)) < 0 ||\r
- (unsigned)got != have)) {\r
- gz_error(state, Z_ERRNO, zstrerror());\r
- return -1;\r
- }\r
- if (strm->avail_out == 0) {\r
- strm->avail_out = state->size;\r
- strm->next_out = state->out;\r
- }\r
- state->next = strm->next_out;\r
- }\r
-\r
- /* compress */\r
- have = strm->avail_out;\r
- ret = deflate(strm, flush);\r
- if (ret == Z_STREAM_ERROR) {\r
- gz_error(state, Z_STREAM_ERROR,\r
- "internal error: deflate stream corrupt");\r
- return -1;\r
- }\r
- have -= strm->avail_out;\r
- } while (have);\r
-\r
- /* if that completed a deflate stream, allow another to start */\r
- if (flush == Z_FINISH)\r
- deflateReset(strm);\r
-\r
- /* all done, no errors */\r
- return 0;\r
-}\r
-\r
-/* Compress len zeros to output. Return -1 on error, 0 on success. */\r
-local int gz_zero(state, len)\r
- gz_statep state;\r
- z_off64_t len;\r
-{\r
- int first;\r
- unsigned n;\r
- z_streamp strm = &(state->strm);\r
-\r
- /* consume whatever's left in the input buffer */\r
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
- return -1;\r
-\r
- /* compress len zeros (len guaranteed > 0) */\r
- first = 1;\r
- while (len) {\r
- n = GT_OFF(state->size) || (z_off64_t)state->size > len ?\r
- (unsigned)len : state->size;\r
- if (first) {\r
- memset(state->in, 0, n);\r
- first = 0;\r
- }\r
- strm->avail_in = n;\r
- strm->next_in = state->in;\r
- state->pos += n;\r
- if (gz_comp(state, Z_NO_FLUSH) == -1)\r
- return -1;\r
- len -= n;\r
- }\r
- return 0;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzwrite(file, buf, len)\r
- gzFile file;\r
- voidpc buf;\r
- unsigned len;\r
-{\r
- unsigned put = len;\r
- unsigned n;\r
- gz_statep state;\r
- z_streamp strm;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return 0;\r
- state = (gz_statep)file;\r
- strm = &(state->strm);\r
-\r
- /* check that we're writing and that there's no error */\r
- if (state->mode != GZ_WRITE || state->err != Z_OK)\r
- return 0;\r
-\r
- /* since an int is returned, make sure len fits in one, otherwise return\r
- with an error (this avoids the flaw in the interface) */\r
- if ((int)len < 0) {\r
- gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");\r
- return 0;\r
- }\r
-\r
- /* if len is zero, avoid unnecessary operations */\r
- if (len == 0)\r
- return 0;\r
-\r
- /* allocate memory if this is the first time through */\r
- if (state->size == 0 && gz_init(state) == -1)\r
- return 0;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_zero(state, state->skip) == -1)\r
- return 0;\r
- }\r
-\r
- /* for small len, copy to input buffer, otherwise compress directly */\r
- if (len < state->size) {\r
- /* copy to input buffer, compress when full */\r
- do {\r
- if (strm->avail_in == 0)\r
- strm->next_in = state->in;\r
- n = state->size - strm->avail_in;\r
- if (n > len)\r
- n = len;\r
- memcpy(strm->next_in + strm->avail_in, buf, n);\r
- strm->avail_in += n;\r
- state->pos += n;\r
- buf = (char *)buf + n;\r
- len -= n;\r
- if (len && gz_comp(state, Z_NO_FLUSH) == -1)\r
- return 0;\r
- } while (len);\r
- }\r
- else {\r
- /* consume whatever's left in the input buffer */\r
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
- return 0;\r
-\r
- /* directly compress user buffer to file */\r
- strm->avail_in = len;\r
- strm->next_in = (voidp)buf;\r
- state->pos += len;\r
- if (gz_comp(state, Z_NO_FLUSH) == -1)\r
- return 0;\r
- }\r
-\r
- /* input was all buffered or compressed (put will fit in int) */\r
- return (int)put;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzputc(file, c)\r
- gzFile file;\r
- int c;\r
-{\r
- unsigned char buf[1];\r
- gz_statep state;\r
- z_streamp strm;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- strm = &(state->strm);\r
-\r
- /* check that we're writing and that there's no error */\r
- if (state->mode != GZ_WRITE || state->err != Z_OK)\r
- return -1;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_zero(state, state->skip) == -1)\r
- return -1;\r
- }\r
-\r
- /* try writing to input buffer for speed (state->size == 0 if buffer not\r
- initialized) */\r
- if (strm->avail_in < state->size) {\r
- if (strm->avail_in == 0)\r
- strm->next_in = state->in;\r
- strm->next_in[strm->avail_in++] = c;\r
- state->pos++;\r
- return c;\r
- }\r
-\r
- /* no room in buffer or not initialized, use gz_write() */\r
- buf[0] = c;\r
- if (gzwrite(file, buf, 1) != 1)\r
- return -1;\r
- return c;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzputs(file, str)\r
- gzFile file;\r
- const char *str;\r
-{\r
- int ret;\r
- unsigned len;\r
-\r
- /* write string */\r
- len = (unsigned)strlen(str);\r
- ret = gzwrite(file, str, len);\r
- return ret == 0 && len != 0 ? -1 : ret;\r
-}\r
-\r
-#ifdef STDC\r
-#include <stdarg.h>\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)\r
-{\r
- int size, len;\r
- gz_statep state;\r
- z_streamp strm;\r
- va_list va;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- strm = &(state->strm);\r
-\r
- /* check that we're writing and that there's no error */\r
- if (state->mode != GZ_WRITE || state->err != Z_OK)\r
- return 0;\r
-\r
- /* make sure we have some buffer space */\r
- if (state->size == 0 && gz_init(state) == -1)\r
- return 0;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_zero(state, state->skip) == -1)\r
- return 0;\r
- }\r
-\r
- /* consume whatever's left in the input buffer */\r
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
- return 0;\r
-\r
- /* do the printf() into the input buffer, put length in len */\r
- size = (int)(state->size);\r
- state->in[size - 1] = 0;\r
- va_start(va, format);\r
-#ifdef NO_vsnprintf\r
-# ifdef HAS_vsprintf_void\r
- (void)vsprintf(state->in, format, va);\r
- va_end(va);\r
- for (len = 0; len < size; len++)\r
- if (state->in[len] == 0) break;\r
-# else\r
- len = vsprintf(state->in, format, va);\r
- va_end(va);\r
-# endif\r
-#else\r
-# ifdef HAS_vsnprintf_void\r
- (void)vsnprintf(state->in, size, format, va);\r
- va_end(va);\r
- len = strlen(state->in);\r
-# else\r
- len = vsnprintf((char *)(state->in), size, format, va);\r
- va_end(va);\r
-# endif\r
-#endif\r
-\r
- /* check that printf() results fit in buffer */\r
- if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)\r
- return 0;\r
-\r
- /* update buffer and position, defer compression until needed */\r
- strm->avail_in = (unsigned)len;\r
- strm->next_in = state->in;\r
- state->pos += len;\r
- return len;\r
-}\r
-\r
-#else /* !STDC */\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,\r
- a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)\r
- gzFile file;\r
- const char *format;\r
- int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,\r
- a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;\r
-{\r
- int size, len;\r
- gz_statep state;\r
- z_streamp strm;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
- strm = &(state->strm);\r
-\r
- /* check that we're writing and that there's no error */\r
- if (state->mode != GZ_WRITE || state->err != Z_OK)\r
- return 0;\r
-\r
- /* make sure we have some buffer space */\r
- if (state->size == 0 && gz_init(state) == -1)\r
- return 0;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_zero(state, state->skip) == -1)\r
- return 0;\r
- }\r
-\r
- /* consume whatever's left in the input buffer */\r
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)\r
- return 0;\r
-\r
- /* do the printf() into the input buffer, put length in len */\r
- size = (int)(state->size);\r
- state->in[size - 1] = 0;\r
-#ifdef NO_snprintf\r
-# ifdef HAS_sprintf_void\r
- sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
- for (len = 0; len < size; len++)\r
- if (state->in[len] == 0) break;\r
-# else\r
- len = sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
-# endif\r
-#else\r
-# ifdef HAS_snprintf_void\r
- snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
- len = strlen(state->in);\r
-# else\r
- len = snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,\r
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);\r
-# endif\r
-#endif\r
-\r
- /* check that printf() results fit in buffer */\r
- if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)\r
- return 0;\r
-\r
- /* update buffer and position, defer compression until needed */\r
- strm->avail_in = (unsigned)len;\r
- strm->next_in = state->in;\r
- state->pos += len;\r
- return len;\r
-}\r
-\r
-#endif\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzflush(file, flush)\r
- gzFile file;\r
- int flush;\r
-{\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return -1;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're writing and that there's no error */\r
- if (state->mode != GZ_WRITE || state->err != Z_OK)\r
- return Z_STREAM_ERROR;\r
-\r
- /* check flush parameter */\r
- if (flush < 0 || flush > Z_FINISH)\r
- return Z_STREAM_ERROR;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_zero(state, state->skip) == -1)\r
- return -1;\r
- }\r
-\r
- /* compress remaining data with requested flush */\r
- gz_comp(state, flush);\r
- return state->err;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzsetparams(file, level, strategy)\r
- gzFile file;\r
- int level;\r
- int strategy;\r
-{\r
- gz_statep state;\r
- z_streamp strm;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return Z_STREAM_ERROR;\r
- state = (gz_statep)file;\r
- strm = &(state->strm);\r
-\r
- /* check that we're writing and that there's no error */\r
- if (state->mode != GZ_WRITE || state->err != Z_OK)\r
- return Z_STREAM_ERROR;\r
-\r
- /* if no change is requested, then do nothing */\r
- if (level == state->level && strategy == state->strategy)\r
- return Z_OK;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- if (gz_zero(state, state->skip) == -1)\r
- return -1;\r
- }\r
-\r
- /* change compression parameters for subsequent input */\r
- if (state->size) {\r
- /* flush previous input with previous parameters before changing */\r
- if (strm->avail_in && gz_comp(state, Z_PARTIAL_FLUSH) == -1)\r
- return state->err;\r
- deflateParams(strm, level, strategy);\r
- }\r
- state->level = level;\r
- state->strategy = strategy;\r
- return Z_OK;\r
-}\r
-\r
-/* -- see zlib.h -- */\r
-int ZEXPORT gzclose_w(file)\r
- gzFile file;\r
-{\r
- int ret = 0;\r
- gz_statep state;\r
-\r
- /* get internal structure */\r
- if (file == NULL)\r
- return Z_STREAM_ERROR;\r
- state = (gz_statep)file;\r
-\r
- /* check that we're writing */\r
- if (state->mode != GZ_WRITE)\r
- return Z_STREAM_ERROR;\r
-\r
- /* check for seek request */\r
- if (state->seek) {\r
- state->seek = 0;\r
- ret += gz_zero(state, state->skip);\r
- }\r
-\r
- /* flush, free memory, and close file */\r
- ret += gz_comp(state, Z_FINISH);\r
- (void)deflateEnd(&(state->strm));\r
- free(state->out);\r
- free(state->in);\r
- gz_error(state, Z_OK, NULL);\r
- free(state->path);\r
- ret += close(state->fd);\r
- free(state);\r
- return ret ? Z_ERRNO : Z_OK;\r
-}\r
+++ /dev/null
-/* infback.c -- inflate using a call-back interface\r
- * Copyright (C) 1995-2009 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/*\r
- This code is largely copied from inflate.c. Normally either infback.o or\r
- inflate.o would be linked into an application--not both. The interface\r
- with inffast.c is retained so that optimized assembler-coded versions of\r
- inflate_fast() can be used with either inflate.c or infback.c.\r
- */\r
-\r
-#include "zutil.h"\r
-#include "inftrees.h"\r
-#include "inflate.h"\r
-#include "inffast.h"\r
-\r
-/* function prototypes */\r
-local void fixedtables OF((struct inflate_state FAR *state));\r
-\r
-/*\r
- strm provides memory allocation functions in zalloc and zfree, or\r
- Z_NULL to use the library memory allocation functions.\r
-\r
- windowBits is in the range 8..15, and window is a user-supplied\r
- window and output buffer that is 2**windowBits bytes.\r
- */\r
-int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)\r
-z_streamp strm;\r
-int windowBits;\r
-unsigned char FAR *window;\r
-const char *version;\r
-int stream_size;\r
-{\r
- struct inflate_state FAR *state;\r
-\r
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||\r
- stream_size != (int)(sizeof(z_stream)))\r
- return Z_VERSION_ERROR;\r
- if (strm == Z_NULL || window == Z_NULL ||\r
- windowBits < 8 || windowBits > 15)\r
- return Z_STREAM_ERROR;\r
- strm->msg = Z_NULL; /* in case we return an error */\r
- if (strm->zalloc == (alloc_func)0) {\r
- strm->zalloc = zcalloc;\r
- strm->opaque = (voidpf)0;\r
- }\r
- if (strm->zfree == (free_func)0) strm->zfree = zcfree;\r
- state = (struct inflate_state FAR *)ZALLOC(strm, 1,\r
- sizeof(struct inflate_state));\r
- if (state == Z_NULL) return Z_MEM_ERROR;\r
- Tracev((stderr, "inflate: allocated\n"));\r
- strm->state = (struct internal_state FAR *)state;\r
- state->dmax = 32768U;\r
- state->wbits = windowBits;\r
- state->wsize = 1U << windowBits;\r
- state->window = window;\r
- state->wnext = 0;\r
- state->whave = 0;\r
- return Z_OK;\r
-}\r
-\r
-/*\r
- Return state with length and distance decoding tables and index sizes set to\r
- fixed code decoding. Normally this returns fixed tables from inffixed.h.\r
- If BUILDFIXED is defined, then instead this routine builds the tables the\r
- first time it's called, and returns those tables the first time and\r
- thereafter. This reduces the size of the code by about 2K bytes, in\r
- exchange for a little execution time. However, BUILDFIXED should not be\r
- used for threaded applications, since the rewriting of the tables and virgin\r
- may not be thread-safe.\r
- */\r
-local void fixedtables(state)\r
-struct inflate_state FAR *state;\r
-{\r
-#ifdef BUILDFIXED\r
- static int virgin = 1;\r
- static code *lenfix, *distfix;\r
- static code fixed[544];\r
-\r
- /* build fixed huffman tables if first call (may not be thread safe) */\r
- if (virgin) {\r
- unsigned sym, bits;\r
- static code *next;\r
-\r
- /* literal/length table */\r
- sym = 0;\r
- while (sym < 144) state->lens[sym++] = 8;\r
- while (sym < 256) state->lens[sym++] = 9;\r
- while (sym < 280) state->lens[sym++] = 7;\r
- while (sym < 288) state->lens[sym++] = 8;\r
- next = fixed;\r
- lenfix = next;\r
- bits = 9;\r
- inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);\r
-\r
- /* distance table */\r
- sym = 0;\r
- while (sym < 32) state->lens[sym++] = 5;\r
- distfix = next;\r
- bits = 5;\r
- inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);\r
-\r
- /* do this just once */\r
- virgin = 0;\r
- }\r
-#else /* !BUILDFIXED */\r
-# include "inffixed.h"\r
-#endif /* BUILDFIXED */\r
- state->lencode = lenfix;\r
- state->lenbits = 9;\r
- state->distcode = distfix;\r
- state->distbits = 5;\r
-}\r
-\r
-/* Macros for inflateBack(): */\r
-\r
-/* Load returned state from inflate_fast() */\r
-#define LOAD() \\r
- do { \\r
- put = strm->next_out; \\r
- left = strm->avail_out; \\r
- next = strm->next_in; \\r
- have = strm->avail_in; \\r
- hold = state->hold; \\r
- bits = state->bits; \\r
- } while (0)\r
-\r
-/* Set state from registers for inflate_fast() */\r
-#define RESTORE() \\r
- do { \\r
- strm->next_out = put; \\r
- strm->avail_out = left; \\r
- strm->next_in = next; \\r
- strm->avail_in = have; \\r
- state->hold = hold; \\r
- state->bits = bits; \\r
- } while (0)\r
-\r
-/* Clear the input bit accumulator */\r
-#define INITBITS() \\r
- do { \\r
- hold = 0; \\r
- bits = 0; \\r
- } while (0)\r
-\r
-/* Assure that some input is available. If input is requested, but denied,\r
- then return a Z_BUF_ERROR from inflateBack(). */\r
-#define PULL() \\r
- do { \\r
- if (have == 0) { \\r
- have = in(in_desc, &next); \\r
- if (have == 0) { \\r
- next = Z_NULL; \\r
- ret = Z_BUF_ERROR; \\r
- goto inf_leave; \\r
- } \\r
- } \\r
- } while (0)\r
-\r
-/* Get a byte of input into the bit accumulator, or return from inflateBack()\r
- with an error if there is no input available. */\r
-#define PULLBYTE() \\r
- do { \\r
- PULL(); \\r
- have--; \\r
- hold += (unsigned long)(*next++) << bits; \\r
- bits += 8; \\r
- } while (0)\r
-\r
-/* Assure that there are at least n bits in the bit accumulator. If there is\r
- not enough available input to do that, then return from inflateBack() with\r
- an error. */\r
-#define NEEDBITS(n) \\r
- do { \\r
- while (bits < (unsigned)(n)) \\r
- PULLBYTE(); \\r
- } while (0)\r
-\r
-/* Return the low n bits of the bit accumulator (n < 16) */\r
-#define BITS(n) \\r
- ((unsigned)hold & ((1U << (n)) - 1))\r
-\r
-/* Remove n bits from the bit accumulator */\r
-#define DROPBITS(n) \\r
- do { \\r
- hold >>= (n); \\r
- bits -= (unsigned)(n); \\r
- } while (0)\r
-\r
-/* Remove zero to seven bits as needed to go to a byte boundary */\r
-#define BYTEBITS() \\r
- do { \\r
- hold >>= bits & 7; \\r
- bits -= bits & 7; \\r
- } while (0)\r
-\r
-/* Assure that some output space is available, by writing out the window\r
- if it's full. If the write fails, return from inflateBack() with a\r
- Z_BUF_ERROR. */\r
-#define ROOM() \\r
- do { \\r
- if (left == 0) { \\r
- put = state->window; \\r
- left = state->wsize; \\r
- state->whave = left; \\r
- if (out(out_desc, put, left)) { \\r
- ret = Z_BUF_ERROR; \\r
- goto inf_leave; \\r
- } \\r
- } \\r
- } while (0)\r
-\r
-/*\r
- strm provides the memory allocation functions and window buffer on input,\r
- and provides information on the unused input on return. For Z_DATA_ERROR\r
- returns, strm will also provide an error message.\r
-\r
- in() and out() are the call-back input and output functions. When\r
- inflateBack() needs more input, it calls in(). When inflateBack() has\r
- filled the window with output, or when it completes with data in the\r
- window, it calls out() to write out the data. The application must not\r
- change the provided input until in() is called again or inflateBack()\r
- returns. The application must not change the window/output buffer until\r
- inflateBack() returns.\r
-\r
- in() and out() are called with a descriptor parameter provided in the\r
- inflateBack() call. This parameter can be a structure that provides the\r
- information required to do the read or write, as well as accumulated\r
- information on the input and output such as totals and check values.\r
-\r
- in() should return zero on failure. out() should return non-zero on\r
- failure. If either in() or out() fails, than inflateBack() returns a\r
- Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it\r
- was in() or out() that caused in the error. Otherwise, inflateBack()\r
- returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format\r
- error, or Z_MEM_ERROR if it could not allocate memory for the state.\r
- inflateBack() can also return Z_STREAM_ERROR if the input parameters\r
- are not correct, i.e. strm is Z_NULL or the state was not initialized.\r
- */\r
-int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)\r
-z_streamp strm;\r
-in_func in;\r
-void FAR *in_desc;\r
-out_func out;\r
-void FAR *out_desc;\r
-{\r
- struct inflate_state FAR *state;\r
- unsigned char FAR *next; /* next input */\r
- unsigned char FAR *put; /* next output */\r
- unsigned have, left; /* available input and output */\r
- unsigned long hold; /* bit buffer */\r
- unsigned bits; /* bits in bit buffer */\r
- unsigned copy; /* number of stored or match bytes to copy */\r
- unsigned char FAR *from; /* where to copy match bytes from */\r
- code here; /* current decoding table entry */\r
- code last; /* parent table entry */\r
- unsigned len; /* length to copy for repeats, bits to drop */\r
- int ret; /* return code */\r
- static const unsigned short order[19] = /* permutation of code lengths */\r
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};\r
-\r
- /* Check that the strm exists and that the state was initialized */\r
- if (strm == Z_NULL || strm->state == Z_NULL)\r
- return Z_STREAM_ERROR;\r
- state = (struct inflate_state FAR *)strm->state;\r
-\r
- /* Reset the state */\r
- strm->msg = Z_NULL;\r
- state->mode = TYPE;\r
- state->last = 0;\r
- state->whave = 0;\r
- next = strm->next_in;\r
- have = next != Z_NULL ? strm->avail_in : 0;\r
- hold = 0;\r
- bits = 0;\r
- put = state->window;\r
- left = state->wsize;\r
-\r
- /* Inflate until end of block marked as last */\r
- for (;;)\r
- switch (state->mode) {\r
- case TYPE:\r
- /* determine and dispatch block type */\r
- if (state->last) {\r
- BYTEBITS();\r
- state->mode = DONE;\r
- break;\r
- }\r
- NEEDBITS(3);\r
- state->last = BITS(1);\r
- DROPBITS(1);\r
- switch (BITS(2)) {\r
- case 0: /* stored block */\r
- Tracev((stderr, "inflate: stored block%s\n",\r
- state->last ? " (last)" : ""));\r
- state->mode = STORED;\r
- break;\r
- case 1: /* fixed block */\r
- fixedtables(state);\r
- Tracev((stderr, "inflate: fixed codes block%s\n",\r
- state->last ? " (last)" : ""));\r
- state->mode = LEN; /* decode codes */\r
- break;\r
- case 2: /* dynamic block */\r
- Tracev((stderr, "inflate: dynamic codes block%s\n",\r
- state->last ? " (last)" : ""));\r
- state->mode = TABLE;\r
- break;\r
- case 3:\r
- strm->msg = (char *)"invalid block type";\r
- state->mode = BAD;\r
- }\r
- DROPBITS(2);\r
- break;\r
-\r
- case STORED:\r
- /* get and verify stored block length */\r
- BYTEBITS(); /* go to byte boundary */\r
- NEEDBITS(32);\r
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {\r
- strm->msg = (char *)"invalid stored block lengths";\r
- state->mode = BAD;\r
- break;\r
- }\r
- state->length = (unsigned)hold & 0xffff;\r
- Tracev((stderr, "inflate: stored length %u\n",\r
- state->length));\r
- INITBITS();\r
-\r
- /* copy stored block from input to output */\r
- while (state->length != 0) {\r
- copy = state->length;\r
- PULL();\r
- ROOM();\r
- if (copy > have) copy = have;\r
- if (copy > left) copy = left;\r
- zmemcpy(put, next, copy);\r
- have -= copy;\r
- next += copy;\r
- left -= copy;\r
- put += copy;\r
- state->length -= copy;\r
- }\r
- Tracev((stderr, "inflate: stored end\n"));\r
- state->mode = TYPE;\r
- break;\r
-\r
- case TABLE:\r
- /* get dynamic table entries descriptor */\r
- NEEDBITS(14);\r
- state->nlen = BITS(5) + 257;\r
- DROPBITS(5);\r
- state->ndist = BITS(5) + 1;\r
- DROPBITS(5);\r
- state->ncode = BITS(4) + 4;\r
- DROPBITS(4);\r
-#ifndef PKZIP_BUG_WORKAROUND\r
- if (state->nlen > 286 || state->ndist > 30) {\r
- strm->msg = (char *)"too many length or distance symbols";\r
- state->mode = BAD;\r
- break;\r
- }\r
-#endif\r
- Tracev((stderr, "inflate: table sizes ok\n"));\r
-\r
- /* get code length code lengths (not a typo) */\r
- state->have = 0;\r
- while (state->have < state->ncode) {\r
- NEEDBITS(3);\r
- state->lens[order[state->have++]] = (unsigned short)BITS(3);\r
- DROPBITS(3);\r
- }\r
- while (state->have < 19)\r
- state->lens[order[state->have++]] = 0;\r
- state->next = state->codes;\r
- state->lencode = (code const FAR *)(state->next);\r
- state->lenbits = 7;\r
- ret = inflate_table(CODES, state->lens, 19, &(state->next),\r
- &(state->lenbits), state->work);\r
- if (ret) {\r
- strm->msg = (char *)"invalid code lengths set";\r
- state->mode = BAD;\r
- break;\r
- }\r
- Tracev((stderr, "inflate: code lengths ok\n"));\r
-\r
- /* get length and distance code code lengths */\r
- state->have = 0;\r
- while (state->have < state->nlen + state->ndist) {\r
- for (;;) {\r
- here = state->lencode[BITS(state->lenbits)];\r
- if ((unsigned)(here.bits) <= bits) break;\r
- PULLBYTE();\r
- }\r
- if (here.val < 16) {\r
- NEEDBITS(here.bits);\r
- DROPBITS(here.bits);\r
- state->lens[state->have++] = here.val;\r
- }\r
- else {\r
- if (here.val == 16) {\r
- NEEDBITS(here.bits + 2);\r
- DROPBITS(here.bits);\r
- if (state->have == 0) {\r
- strm->msg = (char *)"invalid bit length repeat";\r
- state->mode = BAD;\r
- break;\r
- }\r
- len = (unsigned)(state->lens[state->have - 1]);\r
- copy = 3 + BITS(2);\r
- DROPBITS(2);\r
- }\r
- else if (here.val == 17) {\r
- NEEDBITS(here.bits + 3);\r
- DROPBITS(here.bits);\r
- len = 0;\r
- copy = 3 + BITS(3);\r
- DROPBITS(3);\r
- }\r
- else {\r
- NEEDBITS(here.bits + 7);\r
- DROPBITS(here.bits);\r
- len = 0;\r
- copy = 11 + BITS(7);\r
- DROPBITS(7);\r
- }\r
- if (state->have + copy > state->nlen + state->ndist) {\r
- strm->msg = (char *)"invalid bit length repeat";\r
- state->mode = BAD;\r
- break;\r
- }\r
- while (copy--)\r
- state->lens[state->have++] = (unsigned short)len;\r
- }\r
- }\r
-\r
- /* handle error breaks in while */\r
- if (state->mode == BAD) break;\r
-\r
- /* check for end-of-block code (better have one) */\r
- if (state->lens[256] == 0) {\r
- strm->msg = (char *)"invalid code -- missing end-of-block";\r
- state->mode = BAD;\r
- break;\r
- }\r
-\r
- /* build code tables -- note: do not change the lenbits or distbits\r
- values here (9 and 6) without reading the comments in inftrees.h\r
- concerning the ENOUGH constants, which depend on those values */\r
- state->next = state->codes;\r
- state->lencode = (code const FAR *)(state->next);\r
- state->lenbits = 9;\r
- ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),\r
- &(state->lenbits), state->work);\r
- if (ret) {\r
- strm->msg = (char *)"invalid literal/lengths set";\r
- state->mode = BAD;\r
- break;\r
- }\r
- state->distcode = (code const FAR *)(state->next);\r
- state->distbits = 6;\r
- ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,\r
- &(state->next), &(state->distbits), state->work);\r
- if (ret) {\r
- strm->msg = (char *)"invalid distances set";\r
- state->mode = BAD;\r
- break;\r
- }\r
- Tracev((stderr, "inflate: codes ok\n"));\r
- state->mode = LEN;\r
-\r
- case LEN:\r
- /* use inflate_fast() if we have enough input and output */\r
- if (have >= 6 && left >= 258) {\r
- RESTORE();\r
- if (state->whave < state->wsize)\r
- state->whave = state->wsize - left;\r
- inflate_fast(strm, state->wsize);\r
- LOAD();\r
- break;\r
- }\r
-\r
- /* get a literal, length, or end-of-block code */\r
- for (;;) {\r
- here = state->lencode[BITS(state->lenbits)];\r
- if ((unsigned)(here.bits) <= bits) break;\r
- PULLBYTE();\r
- }\r
- if (here.op && (here.op & 0xf0) == 0) {\r
- last = here;\r
- for (;;) {\r
- here = state->lencode[last.val +\r
- (BITS(last.bits + last.op) >> last.bits)];\r
- if ((unsigned)(last.bits + here.bits) <= bits) break;\r
- PULLBYTE();\r
- }\r
- DROPBITS(last.bits);\r
- }\r
- DROPBITS(here.bits);\r
- state->length = (unsigned)here.val;\r
-\r
- /* process literal */\r
- if (here.op == 0) {\r
- Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\r
- "inflate: literal '%c'\n" :\r
- "inflate: literal 0x%02x\n", here.val));\r
- ROOM();\r
- *put++ = (unsigned char)(state->length);\r
- left--;\r
- state->mode = LEN;\r
- break;\r
- }\r
-\r
- /* process end of block */\r
- if (here.op & 32) {\r
- Tracevv((stderr, "inflate: end of block\n"));\r
- state->mode = TYPE;\r
- break;\r
- }\r
-\r
- /* invalid code */\r
- if (here.op & 64) {\r
- strm->msg = (char *)"invalid literal/length code";\r
- state->mode = BAD;\r
- break;\r
- }\r
-\r
- /* length code -- get extra bits, if any */\r
- state->extra = (unsigned)(here.op) & 15;\r
- if (state->extra != 0) {\r
- NEEDBITS(state->extra);\r
- state->length += BITS(state->extra);\r
- DROPBITS(state->extra);\r
- }\r
- Tracevv((stderr, "inflate: length %u\n", state->length));\r
-\r
- /* get distance code */\r
- for (;;) {\r
- here = state->distcode[BITS(state->distbits)];\r
- if ((unsigned)(here.bits) <= bits) break;\r
- PULLBYTE();\r
- }\r
- if ((here.op & 0xf0) == 0) {\r
- last = here;\r
- for (;;) {\r
- here = state->distcode[last.val +\r
- (BITS(last.bits + last.op) >> last.bits)];\r
- if ((unsigned)(last.bits + here.bits) <= bits) break;\r
- PULLBYTE();\r
- }\r
- DROPBITS(last.bits);\r
- }\r
- DROPBITS(here.bits);\r
- if (here.op & 64) {\r
- strm->msg = (char *)"invalid distance code";\r
- state->mode = BAD;\r
- break;\r
- }\r
- state->offset = (unsigned)here.val;\r
-\r
- /* get distance extra bits, if any */\r
- state->extra = (unsigned)(here.op) & 15;\r
- if (state->extra != 0) {\r
- NEEDBITS(state->extra);\r
- state->offset += BITS(state->extra);\r
- DROPBITS(state->extra);\r
- }\r
- if (state->offset > state->wsize - (state->whave < state->wsize ?\r
- left : 0)) {\r
- strm->msg = (char *)"invalid distance too far back";\r
- state->mode = BAD;\r
- break;\r
- }\r
- Tracevv((stderr, "inflate: distance %u\n", state->offset));\r
-\r
- /* copy match from window to output */\r
- do {\r
- ROOM();\r
- copy = state->wsize - state->offset;\r
- if (copy < left) {\r
- from = put + copy;\r
- copy = left - copy;\r
- }\r
- else {\r
- from = put - state->offset;\r
- copy = left;\r
- }\r
- if (copy > state->length) copy = state->length;\r
- state->length -= copy;\r
- left -= copy;\r
- do {\r
- *put++ = *from++;\r
- } while (--copy);\r
- } while (state->length != 0);\r
- break;\r
-\r
- case DONE:\r
- /* inflate stream terminated properly -- write leftover output */\r
- ret = Z_STREAM_END;\r
- if (left < state->wsize) {\r
- if (out(out_desc, state->window, state->wsize - left))\r
- ret = Z_BUF_ERROR;\r
- }\r
- goto inf_leave;\r
-\r
- case BAD:\r
- ret = Z_DATA_ERROR;\r
- goto inf_leave;\r
-\r
- default: /* can't happen, but makes compilers happy */\r
- ret = Z_STREAM_ERROR;\r
- goto inf_leave;\r
- }\r
-\r
- /* Return unused input */\r
- inf_leave:\r
- strm->next_in = next;\r
- strm->avail_in = have;\r
- return ret;\r
-}\r
-\r
-int ZEXPORT inflateBackEnd(strm)\r
-z_streamp strm;\r
-{\r
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)\r
- return Z_STREAM_ERROR;\r
- ZFREE(strm, strm->state);\r
- strm->state = Z_NULL;\r
- Tracev((stderr, "inflate: end\n"));\r
- return Z_OK;\r
-}\r
+++ /dev/null
-/* inffast.c -- fast decoding\r
- * Copyright (C) 1995-2008, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-#include "zutil.h"\r
-#include "inftrees.h"\r
-#include "inflate.h"\r
-#include "inffast.h"\r
-\r
-#ifndef ASMINF\r
-\r
-/* Allow machine dependent optimization for post-increment or pre-increment.\r
- Based on testing to date,\r
- Pre-increment preferred for:\r
- - PowerPC G3 (Adler)\r
- - MIPS R5000 (Randers-Pehrson)\r
- Post-increment preferred for:\r
- - none\r
- No measurable difference:\r
- - Pentium III (Anderson)\r
- - M68060 (Nikl)\r
- */\r
-#ifdef POSTINC\r
-# define OFF 0\r
-# define PUP(a) *(a)++\r
-#else\r
-# define OFF 1\r
-# define PUP(a) *++(a)\r
-#endif\r
-\r
-/*\r
- Decode literal, length, and distance codes and write out the resulting\r
- literal and match bytes until either not enough input or output is\r
- available, an end-of-block is encountered, or a data error is encountered.\r
- When large enough input and output buffers are supplied to inflate(), for\r
- example, a 16K input buffer and a 64K output buffer, more than 95% of the\r
- inflate execution time is spent in this routine.\r
-\r
- Entry assumptions:\r
-\r
- state->mode == LEN\r
- strm->avail_in >= 6\r
- strm->avail_out >= 258\r
- start >= strm->avail_out\r
- state->bits < 8\r
-\r
- On return, state->mode is one of:\r
-\r
- LEN -- ran out of enough output space or enough available input\r
- TYPE -- reached end of block code, inflate() to interpret next block\r
- BAD -- error in block data\r
-\r
- Notes:\r
-\r
- - The maximum input bits used by a length/distance pair is 15 bits for the\r
- length code, 5 bits for the length extra, 15 bits for the distance code,\r
- and 13 bits for the distance extra. This totals 48 bits, or six bytes.\r
- Therefore if strm->avail_in >= 6, then there is enough input to avoid\r
- checking for available input while decoding.\r
-\r
- - The maximum bytes that a single length/distance pair can output is 258\r
- bytes, which is the maximum length that can be coded. inflate_fast()\r
- requires strm->avail_out >= 258 for each loop to avoid checking for\r
- output space.\r
- */\r
-void ZLIB_INTERNAL inflate_fast(strm, start)\r
-z_streamp strm;\r
-unsigned start; /* inflate()'s starting value for strm->avail_out */\r
-{\r
- struct inflate_state FAR *state;\r
- unsigned char FAR *in; /* local strm->next_in */\r
- unsigned char FAR *last; /* while in < last, enough input available */\r
- unsigned char FAR *out; /* local strm->next_out */\r
- unsigned char FAR *beg; /* inflate()'s initial strm->next_out */\r
- unsigned char FAR *end; /* while out < end, enough space available */\r
-#ifdef INFLATE_STRICT\r
- unsigned dmax; /* maximum distance from zlib header */\r
-#endif\r
- unsigned wsize; /* window size or zero if not using window */\r
- unsigned whave; /* valid bytes in the window */\r
- unsigned wnext; /* window write index */\r
- unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */\r
- unsigned long hold; /* local strm->hold */\r
- unsigned bits; /* local strm->bits */\r
- code const FAR *lcode; /* local strm->lencode */\r
- code const FAR *dcode; /* local strm->distcode */\r
- unsigned lmask; /* mask for first level of length codes */\r
- unsigned dmask; /* mask for first level of distance codes */\r
- code here; /* retrieved table entry */\r
- unsigned op; /* code bits, operation, extra bits, or */\r
- /* window position, window bytes to copy */\r
- unsigned len; /* match length, unused bytes */\r
- unsigned dist; /* match distance */\r
- unsigned char FAR *from; /* where to copy match from */\r
-\r
- /* copy state to local variables */\r
- state = (struct inflate_state FAR *)strm->state;\r
- in = strm->next_in - OFF;\r
- last = in + (strm->avail_in - 5);\r
- out = strm->next_out - OFF;\r
- beg = out - (start - strm->avail_out);\r
- end = out + (strm->avail_out - 257);\r
-#ifdef INFLATE_STRICT\r
- dmax = state->dmax;\r
-#endif\r
- wsize = state->wsize;\r
- whave = state->whave;\r
- wnext = state->wnext;\r
- window = state->window;\r
- hold = state->hold;\r
- bits = state->bits;\r
- lcode = state->lencode;\r
- dcode = state->distcode;\r
- lmask = (1U << state->lenbits) - 1;\r
- dmask = (1U << state->distbits) - 1;\r
-\r
- /* decode literals and length/distances until end-of-block or not enough\r
- input data or output space */\r
- do {\r
- if (bits < 15) {\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- }\r
- here = lcode[hold & lmask];\r
- dolen:\r
- op = (unsigned)(here.bits);\r
- hold >>= op;\r
- bits -= op;\r
- op = (unsigned)(here.op);\r
- if (op == 0) { /* literal */\r
- Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\r
- "inflate: literal '%c'\n" :\r
- "inflate: literal 0x%02x\n", here.val));\r
- PUP(out) = (unsigned char)(here.val);\r
- }\r
- else if (op & 16) { /* length base */\r
- len = (unsigned)(here.val);\r
- op &= 15; /* number of extra bits */\r
- if (op) {\r
- if (bits < op) {\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- }\r
- len += (unsigned)hold & ((1U << op) - 1);\r
- hold >>= op;\r
- bits -= op;\r
- }\r
- Tracevv((stderr, "inflate: length %u\n", len));\r
- if (bits < 15) {\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- }\r
- here = dcode[hold & dmask];\r
- dodist:\r
- op = (unsigned)(here.bits);\r
- hold >>= op;\r
- bits -= op;\r
- op = (unsigned)(here.op);\r
- if (op & 16) { /* distance base */\r
- dist = (unsigned)(here.val);\r
- op &= 15; /* number of extra bits */\r
- if (bits < op) {\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- if (bits < op) {\r
- hold += (unsigned long)(PUP(in)) << bits;\r
- bits += 8;\r
- }\r
- }\r
- dist += (unsigned)hold & ((1U << op) - 1);\r
-#ifdef INFLATE_STRICT\r
- if (dist > dmax) {\r
- strm->msg = (char *)"invalid distance too far back";\r
- state->mode = BAD;\r
- break;\r
- }\r
-#endif\r
- hold >>= op;\r
- bits -= op;\r
- Tracevv((stderr, "inflate: distance %u\n", dist));\r
- op = (unsigned)(out - beg); /* max distance in output */\r
- if (dist > op) { /* see if copy from window */\r
- op = dist - op; /* distance back in window */\r
- if (op > whave) {\r
- if (state->sane) {\r
- strm->msg =\r
- (char *)"invalid distance too far back";\r
- state->mode = BAD;\r
- break;\r
- }\r
-#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\r
- if (len <= op - whave) {\r
- do {\r
- PUP(out) = 0;\r
- } while (--len);\r
- continue;\r
- }\r
- len -= op - whave;\r
- do {\r
- PUP(out) = 0;\r
- } while (--op > whave);\r
- if (op == 0) {\r
- from = out - dist;\r
- do {\r
- PUP(out) = PUP(from);\r
- } while (--len);\r
- continue;\r
- }\r
-#endif\r
- }\r
- from = window - OFF;\r
- if (wnext == 0) { /* very common case */\r
- from += wsize - op;\r
- if (op < len) { /* some from window */\r
- len -= op;\r
- do {\r
- PUP(out) = PUP(from);\r
- } while (--op);\r
- from = out - dist; /* rest from output */\r
- }\r
- }\r
- else if (wnext < op) { /* wrap around window */\r
- from += wsize + wnext - op;\r
- op -= wnext;\r
- if (op < len) { /* some from end of window */\r
- len -= op;\r
- do {\r
- PUP(out) = PUP(from);\r
- } while (--op);\r
- from = window - OFF;\r
- if (wnext < len) { /* some from start of window */\r
- op = wnext;\r
- len -= op;\r
- do {\r
- PUP(out) = PUP(from);\r
- } while (--op);\r
- from = out - dist; /* rest from output */\r
- }\r
- }\r
- }\r
- else { /* contiguous in window */\r
- from += wnext - op;\r
- if (op < len) { /* some from window */\r
- len -= op;\r
- do {\r
- PUP(out) = PUP(from);\r
- } while (--op);\r
- from = out - dist; /* rest from output */\r
- }\r
- }\r
- while (len > 2) {\r
- PUP(out) = PUP(from);\r
- PUP(out) = PUP(from);\r
- PUP(out) = PUP(from);\r
- len -= 3;\r
- }\r
- if (len) {\r
- PUP(out) = PUP(from);\r
- if (len > 1)\r
- PUP(out) = PUP(from);\r
- }\r
- }\r
- else {\r
- from = out - dist; /* copy direct from output */\r
- do { /* minimum length is three */\r
- PUP(out) = PUP(from);\r
- PUP(out) = PUP(from);\r
- PUP(out) = PUP(from);\r
- len -= 3;\r
- } while (len > 2);\r
- if (len) {\r
- PUP(out) = PUP(from);\r
- if (len > 1)\r
- PUP(out) = PUP(from);\r
- }\r
- }\r
- }\r
- else if ((op & 64) == 0) { /* 2nd level distance code */\r
- here = dcode[here.val + (hold & ((1U << op) - 1))];\r
- goto dodist;\r
- }\r
- else {\r
- strm->msg = (char *)"invalid distance code";\r
- state->mode = BAD;\r
- break;\r
- }\r
- }\r
- else if ((op & 64) == 0) { /* 2nd level length code */\r
- here = lcode[here.val + (hold & ((1U << op) - 1))];\r
- goto dolen;\r
- }\r
- else if (op & 32) { /* end-of-block */\r
- Tracevv((stderr, "inflate: end of block\n"));\r
- state->mode = TYPE;\r
- break;\r
- }\r
- else {\r
- strm->msg = (char *)"invalid literal/length code";\r
- state->mode = BAD;\r
- break;\r
- }\r
- } while (in < last && out < end);\r
-\r
- /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\r
- len = bits >> 3;\r
- in -= len;\r
- bits -= len << 3;\r
- hold &= (1U << bits) - 1;\r
-\r
- /* update state and return */\r
- strm->next_in = in + OFF;\r
- strm->next_out = out + OFF;\r
- strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));\r
- strm->avail_out = (unsigned)(out < end ?\r
- 257 + (end - out) : 257 - (out - end));\r
- state->hold = hold;\r
- state->bits = bits;\r
- return;\r
-}\r
-\r
-/*\r
- inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):\r
- - Using bit fields for code structure\r
- - Different op definition to avoid & for extra bits (do & for table bits)\r
- - Three separate decoding do-loops for direct, window, and wnext == 0\r
- - Special case for distance > 1 copies to do overlapped load and store copy\r
- - Explicit branch predictions (based on measured branch probabilities)\r
- - Deferring match copy and interspersed it with decoding subsequent codes\r
- - Swapping literal/length else\r
- - Swapping window/direct else\r
- - Larger unrolled copy loops (three is about right)\r
- - Moving len -= 3 statement into middle of loop\r
- */\r
-\r
-#endif /* !ASMINF */\r
+++ /dev/null
-/* inffast.h -- header to use inffast.c\r
- * Copyright (C) 1995-2003, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* WARNING: this file should *not* be used by applications. It is\r
- part of the implementation of the compression library and is\r
- subject to change. Applications should only use zlib.h.\r
- */\r
-\r
-void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));\r
+++ /dev/null
- /* inffixed.h -- table for decoding fixed codes\r
- * Generated automatically by makefixed().\r
- */\r
-\r
- /* WARNING: this file should *not* be used by applications. It\r
- is part of the implementation of the compression library and\r
- is subject to change. Applications should only use zlib.h.\r
- */\r
-\r
- static const code lenfix[512] = {\r
- {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},\r
- {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},\r
- {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},\r
- {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},\r
- {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},\r
- {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},\r
- {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},\r
- {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},\r
- {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},\r
- {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},\r
- {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},\r
- {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},\r
- {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},\r
- {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},\r
- {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},\r
- {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},\r
- {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},\r
- {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},\r
- {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},\r
- {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},\r
- {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},\r
- {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},\r
- {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},\r
- {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},\r
- {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},\r
- {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},\r
- {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},\r
- {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},\r
- {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},\r
- {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},\r
- {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},\r
- {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},\r
- {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},\r
- {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},\r
- {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},\r
- {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},\r
- {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},\r
- {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},\r
- {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},\r
- {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},\r
- {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},\r
- {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},\r
- {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},\r
- {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},\r
- {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},\r
- {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},\r
- {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},\r
- {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},\r
- {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},\r
- {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},\r
- {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},\r
- {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},\r
- {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},\r
- {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},\r
- {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},\r
- {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},\r
- {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},\r
- {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},\r
- {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},\r
- {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},\r
- {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},\r
- {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},\r
- {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},\r
- {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},\r
- {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},\r
- {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},\r
- {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},\r
- {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},\r
- {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},\r
- {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},\r
- {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},\r
- {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},\r
- {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},\r
- {0,9,255}\r
- };\r
-\r
- static const code distfix[32] = {\r
- {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},\r
- {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},\r
- {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},\r
- {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},\r
- {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},\r
- {22,5,193},{64,5,0}\r
- };\r
+++ /dev/null
-/* inflate.h -- internal inflate state definition\r
- * Copyright (C) 1995-2009 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* WARNING: this file should *not* be used by applications. It is\r
- part of the implementation of the compression library and is\r
- subject to change. Applications should only use zlib.h.\r
- */\r
-\r
-/* define NO_GZIP when compiling if you want to disable gzip header and\r
- trailer decoding by inflate(). NO_GZIP would be used to avoid linking in\r
- the crc code when it is not needed. For shared libraries, gzip decoding\r
- should be left enabled. */\r
-#ifndef NO_GZIP\r
-# define GUNZIP\r
-#endif\r
-\r
-/* Possible inflate modes between inflate() calls */\r
-typedef enum {\r
- HEAD, /* i: waiting for magic header */\r
- FLAGS, /* i: waiting for method and flags (gzip) */\r
- TIME, /* i: waiting for modification time (gzip) */\r
- OS, /* i: waiting for extra flags and operating system (gzip) */\r
- EXLEN, /* i: waiting for extra length (gzip) */\r
- EXTRA, /* i: waiting for extra bytes (gzip) */\r
- NAME, /* i: waiting for end of file name (gzip) */\r
- COMMENT, /* i: waiting for end of comment (gzip) */\r
- HCRC, /* i: waiting for header crc (gzip) */\r
- DICTID, /* i: waiting for dictionary check value */\r
- DICT, /* waiting for inflateSetDictionary() call */\r
- TYPE, /* i: waiting for type bits, including last-flag bit */\r
- TYPEDO, /* i: same, but skip check to exit inflate on new block */\r
- STORED, /* i: waiting for stored size (length and complement) */\r
- COPY_, /* i/o: same as COPY below, but only first time in */\r
- COPY, /* i/o: waiting for input or output to copy stored block */\r
- TABLE, /* i: waiting for dynamic block table lengths */\r
- LENLENS, /* i: waiting for code length code lengths */\r
- CODELENS, /* i: waiting for length/lit and distance code lengths */\r
- LEN_, /* i: same as LEN below, but only first time in */\r
- LEN, /* i: waiting for length/lit/eob code */\r
- LENEXT, /* i: waiting for length extra bits */\r
- DIST, /* i: waiting for distance code */\r
- DISTEXT, /* i: waiting for distance extra bits */\r
- MATCH, /* o: waiting for output space to copy string */\r
- LIT, /* o: waiting for output space to write literal */\r
- CHECK, /* i: waiting for 32-bit check value */\r
- LENGTH, /* i: waiting for 32-bit length (gzip) */\r
- DONE, /* finished check, done -- remain here until reset */\r
- BAD, /* got a data error -- remain here until reset */\r
- MEM, /* got an inflate() memory error -- remain here until reset */\r
- SYNC /* looking for synchronization bytes to restart inflate() */\r
-} inflate_mode;\r
-\r
-/*\r
- State transitions between above modes -\r
-\r
- (most modes can go to BAD or MEM on error -- not shown for clarity)\r
-\r
- Process header:\r
- HEAD -> (gzip) or (zlib) or (raw)\r
- (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->\r
- HCRC -> TYPE\r
- (zlib) -> DICTID or TYPE\r
- DICTID -> DICT -> TYPE\r
- (raw) -> TYPEDO\r
- Read deflate blocks:\r
- TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK\r
- STORED -> COPY_ -> COPY -> TYPE\r
- TABLE -> LENLENS -> CODELENS -> LEN_\r
- LEN_ -> LEN\r
- Read deflate codes in fixed or dynamic block:\r
- LEN -> LENEXT or LIT or TYPE\r
- LENEXT -> DIST -> DISTEXT -> MATCH -> LEN\r
- LIT -> LEN\r
- Process trailer:\r
- CHECK -> LENGTH -> DONE\r
- */\r
-\r
-/* state maintained between inflate() calls. Approximately 10K bytes. */\r
-struct inflate_state {\r
- inflate_mode mode; /* current inflate mode */\r
- int last; /* true if processing last block */\r
- int wrap; /* bit 0 true for zlib, bit 1 true for gzip */\r
- int havedict; /* true if dictionary provided */\r
- int flags; /* gzip header method and flags (0 if zlib) */\r
- unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */\r
- unsigned long check; /* protected copy of check value */\r
- unsigned long total; /* protected copy of output count */\r
- gz_headerp head; /* where to save gzip header information */\r
- /* sliding window */\r
- unsigned wbits; /* log base 2 of requested window size */\r
- unsigned wsize; /* window size or zero if not using window */\r
- unsigned whave; /* valid bytes in the window */\r
- unsigned wnext; /* window write index */\r
- unsigned char FAR *window; /* allocated sliding window, if needed */\r
- /* bit accumulator */\r
- unsigned long hold; /* input bit accumulator */\r
- unsigned bits; /* number of bits in "in" */\r
- /* for string and stored block copying */\r
- unsigned length; /* literal or length of data to copy */\r
- unsigned offset; /* distance back to copy string from */\r
- /* for table and code decoding */\r
- unsigned extra; /* extra bits needed */\r
- /* fixed and dynamic code tables */\r
- code const FAR *lencode; /* starting table for length/literal codes */\r
- code const FAR *distcode; /* starting table for distance codes */\r
- unsigned lenbits; /* index bits for lencode */\r
- unsigned distbits; /* index bits for distcode */\r
- /* dynamic table building */\r
- unsigned ncode; /* number of code length code lengths */\r
- unsigned nlen; /* number of length code lengths */\r
- unsigned ndist; /* number of distance code lengths */\r
- unsigned have; /* number of code lengths in lens[] */\r
- code FAR *next; /* next available space in codes[] */\r
- unsigned short lens[320]; /* temporary storage for code lengths */\r
- unsigned short work[288]; /* work area for code table building */\r
- code codes[ENOUGH]; /* space for code tables */\r
- int sane; /* if false, allow invalid distance too far */\r
- int back; /* bits back of last unprocessed length/lit */\r
- unsigned was; /* initial length of match */\r
-};\r
+++ /dev/null
-/* inftrees.c -- generate Huffman trees for efficient decoding\r
- * Copyright (C) 1995-2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-#include "zutil.h"\r
-#include "inftrees.h"\r
-\r
-#define MAXBITS 15\r
-\r
-const char inflate_copyright[] =\r
- " inflate 1.2.5 Copyright 1995-2010 Mark Adler ";\r
-/*\r
- If you use the zlib library in a product, an acknowledgment is welcome\r
- in the documentation of your product. If for some reason you cannot\r
- include such an acknowledgment, I would appreciate that you keep this\r
- copyright string in the executable of your product.\r
- */\r
-\r
-/*\r
- Build a set of tables to decode the provided canonical Huffman code.\r
- The code lengths are lens[0..codes-1]. The result starts at *table,\r
- whose indices are 0..2^bits-1. work is a writable array of at least\r
- lens shorts, which is used as a work area. type is the type of code\r
- to be generated, CODES, LENS, or DISTS. On return, zero is success,\r
- -1 is an invalid code, and +1 means that ENOUGH isn't enough. table\r
- on return points to the next available entry's address. bits is the\r
- requested root table index bits, and on return it is the actual root\r
- table index bits. It will differ if the request is greater than the\r
- longest code or if it is less than the shortest code.\r
- */\r
-int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)\r
-codetype type;\r
-unsigned short FAR *lens;\r
-unsigned codes;\r
-code FAR * FAR *table;\r
-unsigned FAR *bits;\r
-unsigned short FAR *work;\r
-{\r
- unsigned len; /* a code's length in bits */\r
- unsigned sym; /* index of code symbols */\r
- unsigned min, max; /* minimum and maximum code lengths */\r
- unsigned root; /* number of index bits for root table */\r
- unsigned curr; /* number of index bits for current table */\r
- unsigned drop; /* code bits to drop for sub-table */\r
- int left; /* number of prefix codes available */\r
- unsigned used; /* code entries in table used */\r
- unsigned huff; /* Huffman code */\r
- unsigned incr; /* for incrementing code, index */\r
- unsigned fill; /* index for replicating entries */\r
- unsigned low; /* low bits for current root entry */\r
- unsigned mask; /* mask for low root bits */\r
- code here; /* table entry for duplication */\r
- code FAR *next; /* next available space in table */\r
- const unsigned short FAR *base; /* base value table to use */\r
- const unsigned short FAR *extra; /* extra bits table to use */\r
- int end; /* use base and extra for symbol > end */\r
- unsigned short count[MAXBITS+1]; /* number of codes of each length */\r
- unsigned short offs[MAXBITS+1]; /* offsets in table for each length */\r
- static const unsigned short lbase[31] = { /* Length codes 257..285 base */\r
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,\r
- 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};\r
- static const unsigned short lext[31] = { /* Length codes 257..285 extra */\r
- 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,\r
- 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 73, 195};\r
- static const unsigned short dbase[32] = { /* Distance codes 0..29 base */\r
- 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,\r
- 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,\r
- 8193, 12289, 16385, 24577, 0, 0};\r
- static const unsigned short dext[32] = { /* Distance codes 0..29 extra */\r
- 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,\r
- 23, 23, 24, 24, 25, 25, 26, 26, 27, 27,\r
- 28, 28, 29, 29, 64, 64};\r
-\r
- /*\r
- Process a set of code lengths to create a canonical Huffman code. The\r
- code lengths are lens[0..codes-1]. Each length corresponds to the\r
- symbols 0..codes-1. The Huffman code is generated by first sorting the\r
- symbols by length from short to long, and retaining the symbol order\r
- for codes with equal lengths. Then the code starts with all zero bits\r
- for the first code of the shortest length, and the codes are integer\r
- increments for the same length, and zeros are appended as the length\r
- increases. For the deflate format, these bits are stored backwards\r
- from their more natural integer increment ordering, and so when the\r
- decoding tables are built in the large loop below, the integer codes\r
- are incremented backwards.\r
-\r
- This routine assumes, but does not check, that all of the entries in\r
- lens[] are in the range 0..MAXBITS. The caller must assure this.\r
- 1..MAXBITS is interpreted as that code length. zero means that that\r
- symbol does not occur in this code.\r
-\r
- The codes are sorted by computing a count of codes for each length,\r
- creating from that a table of starting indices for each length in the\r
- sorted table, and then entering the symbols in order in the sorted\r
- table. The sorted table is work[], with that space being provided by\r
- the caller.\r
-\r
- The length counts are used for other purposes as well, i.e. finding\r
- the minimum and maximum length codes, determining if there are any\r
- codes at all, checking for a valid set of lengths, and looking ahead\r
- at length counts to determine sub-table sizes when building the\r
- decoding tables.\r
- */\r
-\r
- /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */\r
- for (len = 0; len <= MAXBITS; len++)\r
- count[len] = 0;\r
- for (sym = 0; sym < codes; sym++)\r
- count[lens[sym]]++;\r
-\r
- /* bound code lengths, force root to be within code lengths */\r
- root = *bits;\r
- for (max = MAXBITS; max >= 1; max--)\r
- if (count[max] != 0) break;\r
- if (root > max) root = max;\r
- if (max == 0) { /* no symbols to code at all */\r
- here.op = (unsigned char)64; /* invalid code marker */\r
- here.bits = (unsigned char)1;\r
- here.val = (unsigned short)0;\r
- *(*table)++ = here; /* make a table to force an error */\r
- *(*table)++ = here;\r
- *bits = 1;\r
- return 0; /* no symbols, but wait for decoding to report error */\r
- }\r
- for (min = 1; min < max; min++)\r
- if (count[min] != 0) break;\r
- if (root < min) root = min;\r
-\r
- /* check for an over-subscribed or incomplete set of lengths */\r
- left = 1;\r
- for (len = 1; len <= MAXBITS; len++) {\r
- left <<= 1;\r
- left -= count[len];\r
- if (left < 0) return -1; /* over-subscribed */\r
- }\r
- if (left > 0 && (type == CODES || max != 1))\r
- return -1; /* incomplete set */\r
-\r
- /* generate offsets into symbol table for each length for sorting */\r
- offs[1] = 0;\r
- for (len = 1; len < MAXBITS; len++)\r
- offs[len + 1] = offs[len] + count[len];\r
-\r
- /* sort symbols by length, by symbol order within each length */\r
- for (sym = 0; sym < codes; sym++)\r
- if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;\r
-\r
- /*\r
- Create and fill in decoding tables. In this loop, the table being\r
- filled is at next and has curr index bits. The code being used is huff\r
- with length len. That code is converted to an index by dropping drop\r
- bits off of the bottom. For codes where len is less than drop + curr,\r
- those top drop + curr - len bits are incremented through all values to\r
- fill the table with replicated entries.\r
-\r
- root is the number of index bits for the root table. When len exceeds\r
- root, sub-tables are created pointed to by the root entry with an index\r
- of the low root bits of huff. This is saved in low to check for when a\r
- new sub-table should be started. drop is zero when the root table is\r
- being filled, and drop is root when sub-tables are being filled.\r
-\r
- When a new sub-table is needed, it is necessary to look ahead in the\r
- code lengths to determine what size sub-table is needed. The length\r
- counts are used for this, and so count[] is decremented as codes are\r
- entered in the tables.\r
-\r
- used keeps track of how many table entries have been allocated from the\r
- provided *table space. It is checked for LENS and DIST tables against\r
- the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in\r
- the initial root table size constants. See the comments in inftrees.h\r
- for more information.\r
-\r
- sym increments through all symbols, and the loop terminates when\r
- all codes of length max, i.e. all codes, have been processed. This\r
- routine permits incomplete codes, so another loop after this one fills\r
- in the rest of the decoding tables with invalid code markers.\r
- */\r
-\r
- /* set up for code type */\r
- switch (type) {\r
- case CODES:\r
- base = extra = work; /* dummy value--not used */\r
- end = 19;\r
- break;\r
- case LENS:\r
- base = lbase;\r
- base -= 257;\r
- extra = lext;\r
- extra -= 257;\r
- end = 256;\r
- break;\r
- default: /* DISTS */\r
- base = dbase;\r
- extra = dext;\r
- end = -1;\r
- }\r
-\r
- /* initialize state for loop */\r
- huff = 0; /* starting code */\r
- sym = 0; /* starting code symbol */\r
- len = min; /* starting code length */\r
- next = *table; /* current table to fill in */\r
- curr = root; /* current table index bits */\r
- drop = 0; /* current bits to drop from code for index */\r
- low = (unsigned)(-1); /* trigger new sub-table when len > root */\r
- used = 1U << root; /* use root table entries */\r
- mask = used - 1; /* mask for comparing low */\r
-\r
- /* check available table space */\r
- if ((type == LENS && used >= ENOUGH_LENS) ||\r
- (type == DISTS && used >= ENOUGH_DISTS))\r
- return 1;\r
-\r
- /* process all codes and make table entries */\r
- for (;;) {\r
- /* create table entry */\r
- here.bits = (unsigned char)(len - drop);\r
- if ((int)(work[sym]) < end) {\r
- here.op = (unsigned char)0;\r
- here.val = work[sym];\r
- }\r
- else if ((int)(work[sym]) > end) {\r
- here.op = (unsigned char)(extra[work[sym]]);\r
- here.val = base[work[sym]];\r
- }\r
- else {\r
- here.op = (unsigned char)(32 + 64); /* end of block */\r
- here.val = 0;\r
- }\r
-\r
- /* replicate for those indices with low len bits equal to huff */\r
- incr = 1U << (len - drop);\r
- fill = 1U << curr;\r
- min = fill; /* save offset to next table */\r
- do {\r
- fill -= incr;\r
- next[(huff >> drop) + fill] = here;\r
- } while (fill != 0);\r
-\r
- /* backwards increment the len-bit code huff */\r
- incr = 1U << (len - 1);\r
- while (huff & incr)\r
- incr >>= 1;\r
- if (incr != 0) {\r
- huff &= incr - 1;\r
- huff += incr;\r
- }\r
- else\r
- huff = 0;\r
-\r
- /* go to next symbol, update count, len */\r
- sym++;\r
- if (--(count[len]) == 0) {\r
- if (len == max) break;\r
- len = lens[work[sym]];\r
- }\r
-\r
- /* create new sub-table if needed */\r
- if (len > root && (huff & mask) != low) {\r
- /* if first time, transition to sub-tables */\r
- if (drop == 0)\r
- drop = root;\r
-\r
- /* increment past last table */\r
- next += min; /* here min is 1 << curr */\r
-\r
- /* determine length of next table */\r
- curr = len - drop;\r
- left = (int)(1 << curr);\r
- while (curr + drop < max) {\r
- left -= count[curr + drop];\r
- if (left <= 0) break;\r
- curr++;\r
- left <<= 1;\r
- }\r
-\r
- /* check for enough space */\r
- used += 1U << curr;\r
- if ((type == LENS && used >= ENOUGH_LENS) ||\r
- (type == DISTS && used >= ENOUGH_DISTS))\r
- return 1;\r
-\r
- /* point entry in root table to sub-table */\r
- low = huff & mask;\r
- (*table)[low].op = (unsigned char)curr;\r
- (*table)[low].bits = (unsigned char)root;\r
- (*table)[low].val = (unsigned short)(next - *table);\r
- }\r
- }\r
-\r
- /*\r
- Fill in rest of table for incomplete codes. This loop is similar to the\r
- loop above in incrementing huff for table indices. It is assumed that\r
- len is equal to curr + drop, so there is no loop needed to increment\r
- through high index bits. When the current sub-table is filled, the loop\r
- drops back to the root table to fill in any remaining entries there.\r
- */\r
- here.op = (unsigned char)64; /* invalid code marker */\r
- here.bits = (unsigned char)(len - drop);\r
- here.val = (unsigned short)0;\r
- while (huff != 0) {\r
- /* when done with sub-table, drop back to root table */\r
- if (drop != 0 && (huff & mask) != low) {\r
- drop = 0;\r
- len = root;\r
- next = *table;\r
- here.bits = (unsigned char)len;\r
- }\r
-\r
- /* put invalid code marker in table */\r
- next[huff >> drop] = here;\r
-\r
- /* backwards increment the len-bit code huff */\r
- incr = 1U << (len - 1);\r
- while (huff & incr)\r
- incr >>= 1;\r
- if (incr != 0) {\r
- huff &= incr - 1;\r
- huff += incr;\r
- }\r
- else\r
- huff = 0;\r
- }\r
-\r
- /* set return parameters */\r
- *table += used;\r
- *bits = root;\r
- return 0;\r
-}\r
+++ /dev/null
-/* inftrees.h -- header to use inftrees.c\r
- * Copyright (C) 1995-2005, 2010 Mark Adler\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* WARNING: this file should *not* be used by applications. It is\r
- part of the implementation of the compression library and is\r
- subject to change. Applications should only use zlib.h.\r
- */\r
-\r
-/* Structure for decoding tables. Each entry provides either the\r
- information needed to do the operation requested by the code that\r
- indexed that table entry, or it provides a pointer to another\r
- table that indexes more bits of the code. op indicates whether\r
- the entry is a pointer to another table, a literal, a length or\r
- distance, an end-of-block, or an invalid code. For a table\r
- pointer, the low four bits of op is the number of index bits of\r
- that table. For a length or distance, the low four bits of op\r
- is the number of extra bits to get after the code. bits is\r
- the number of bits in this code or part of the code to drop off\r
- of the bit buffer. val is the actual byte to output in the case\r
- of a literal, the base length or distance, or the offset from\r
- the current table to the next table. Each entry is four bytes. */\r
-typedef struct {\r
- unsigned char op; /* operation, extra bits, table bits */\r
- unsigned char bits; /* bits in this part of the code */\r
- unsigned short val; /* offset in table or code value */\r
-} code;\r
-\r
-/* op values as set by inflate_table():\r
- 00000000 - literal\r
- 0000tttt - table link, tttt != 0 is the number of table index bits\r
- 0001eeee - length or distance, eeee is the number of extra bits\r
- 01100000 - end of block\r
- 01000000 - invalid code\r
- */\r
-\r
-/* Maximum size of the dynamic table. The maximum number of code structures is\r
- 1444, which is the sum of 852 for literal/length codes and 592 for distance\r
- codes. These values were found by exhaustive searches using the program\r
- examples/enough.c found in the zlib distribtution. The arguments to that\r
- program are the number of symbols, the initial root table size, and the\r
- maximum bit length of a code. "enough 286 9 15" for literal/length codes\r
- returns returns 852, and "enough 30 6 15" for distance codes returns 592.\r
- The initial root table size (9 or 6) is found in the fifth argument of the\r
- inflate_table() calls in inflate.c and infback.c. If the root table size is\r
- changed, then these maximum sizes would be need to be recalculated and\r
- updated. */\r
-#define ENOUGH_LENS 852\r
-#define ENOUGH_DISTS 592\r
-#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)\r
-\r
-/* Type of code to build for inflate_table() */\r
-typedef enum {\r
- CODES,\r
- LENS,\r
- DISTS\r
-} codetype;\r
-\r
-int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,\r
- unsigned codes, code FAR * FAR *table,\r
- unsigned FAR *bits, unsigned short FAR *work));\r
+++ /dev/null
-/* trees.c -- output deflated data using Huffman coding\r
- * Copyright (C) 1995-2010 Jean-loup Gailly\r
- * detect_data_type() function provided freely by Cosmin Truta, 2006\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/*\r
- * ALGORITHM\r
- *\r
- * The "deflation" process uses several Huffman trees. The more\r
- * common source values are represented by shorter bit sequences.\r
- *\r
- * Each code tree is stored in a compressed form which is itself\r
- * a Huffman encoding of the lengths of all the code strings (in\r
- * ascending order by source values). The actual code strings are\r
- * reconstructed from the lengths in the inflate process, as described\r
- * in the deflate specification.\r
- *\r
- * REFERENCES\r
- *\r
- * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".\r
- * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc\r
- *\r
- * Storer, James A.\r
- * Data Compression: Methods and Theory, pp. 49-50.\r
- * Computer Science Press, 1988. ISBN 0-7167-8156-5.\r
- *\r
- * Sedgewick, R.\r
- * Algorithms, p290.\r
- * Addison-Wesley, 1983. ISBN 0-201-06672-6.\r
- */\r
-\r
-/* \param (#) $Id$ */\r
-\r
-/* #define GEN_TREES_H */\r
-\r
-#include "deflate.h"\r
-\r
-#ifdef DEBUG\r
-# include <ctype.h>\r
-#endif\r
-\r
-/* ===========================================================================\r
- * Constants\r
- */\r
-\r
-#define MAX_BL_BITS 7\r
-/* Bit length codes must not exceed MAX_BL_BITS bits */\r
-\r
-#define END_BLOCK 256\r
-/* end of block literal code */\r
-\r
-#define REP_3_6 16\r
-/* repeat previous bit length 3-6 times (2 bits of repeat count) */\r
-\r
-#define REPZ_3_10 17\r
-/* repeat a zero length 3-10 times (3 bits of repeat count) */\r
-\r
-#define REPZ_11_138 18\r
-/* repeat a zero length 11-138 times (7 bits of repeat count) */\r
-\r
-local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */\r
- = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};\r
-\r
-local const int extra_dbits[D_CODES] /* extra bits for each distance code */\r
- = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};\r
-\r
-local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */\r
- = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};\r
-\r
-local const uch bl_order[BL_CODES]\r
- = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};\r
-/* The lengths of the bit length codes are sent in order of decreasing\r
- * probability, to avoid transmitting the lengths for unused bit length codes.\r
- */\r
-\r
-#define Buf_size (8 * 2*sizeof(char))\r
-/* Number of bits used within bi_buf. (bi_buf might be implemented on\r
- * more than 16 bits on some systems.)\r
- */\r
-\r
-/* ===========================================================================\r
- * Local data. These are initialized only once.\r
- */\r
-\r
-#define DIST_CODE_LEN 512 /* see definition of array dist_code below */\r
-\r
-#if defined(GEN_TREES_H) || !defined(STDC)\r
-/* non ANSI compilers may not accept trees.h */\r
-\r
-local ct_data static_ltree[L_CODES+2];\r
-/* The static literal tree. Since the bit lengths are imposed, there is no\r
- * need for the L_CODES extra codes used during heap construction. However\r
- * The codes 286 and 287 are needed to build a canonical tree (see _tr_init\r
- * below).\r
- */\r
-\r
-local ct_data static_dtree[D_CODES];\r
-/* The static distance tree. (Actually a trivial tree since all codes use\r
- * 5 bits.)\r
- */\r
-\r
-uch _dist_code[DIST_CODE_LEN];\r
-/* Distance codes. The first 256 values correspond to the distances\r
- * 3 .. 258, the last 256 values correspond to the top 8 bits of\r
- * the 15 bit distances.\r
- */\r
-\r
-uch _length_code[MAX_MATCH-MIN_MATCH+1];\r
-/* length code for each normalized match length (0 == MIN_MATCH) */\r
-\r
-local int base_length[LENGTH_CODES];\r
-/* First normalized length for each code (0 = MIN_MATCH) */\r
-\r
-local int base_dist[D_CODES];\r
-/* First normalized distance for each code (0 = distance of 1) */\r
-\r
-#else\r
-# include "trees.h"\r
-#endif /* GEN_TREES_H */\r
-\r
-struct static_tree_desc_s {\r
- const ct_data *static_tree; /* static tree or NULL */\r
- const intf *extra_bits; /* extra bits for each code or NULL */\r
- int extra_base; /* base index for extra_bits */\r
- int elems; /* max number of elements in the tree */\r
- int max_length; /* max bit length for the codes */\r
-};\r
-\r
-local static_tree_desc static_l_desc =\r
-{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};\r
-\r
-local static_tree_desc static_d_desc =\r
-{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS};\r
-\r
-local static_tree_desc static_bl_desc =\r
-{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS};\r
-\r
-/* ===========================================================================\r
- * Local (static) routines in this file.\r
- */\r
-\r
-local void tr_static_init OF((void));\r
-local void init_block OF((deflate_state *s));\r
-local void pqdownheap OF((deflate_state *s, ct_data *tree, int k));\r
-local void gen_bitlen OF((deflate_state *s, tree_desc *desc));\r
-local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count));\r
-local void build_tree OF((deflate_state *s, tree_desc *desc));\r
-local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code));\r
-local void send_tree OF((deflate_state *s, ct_data *tree, int max_code));\r
-local int build_bl_tree OF((deflate_state *s));\r
-local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,\r
- int blcodes));\r
-local void compress_block OF((deflate_state *s, ct_data *ltree,\r
- ct_data *dtree));\r
-local int detect_data_type OF((deflate_state *s));\r
-local unsigned bi_reverse OF((unsigned value, int length));\r
-local void bi_windup OF((deflate_state *s));\r
-local void bi_flush OF((deflate_state *s));\r
-local void copy_block OF((deflate_state *s, charf *buf, unsigned len,\r
- int header));\r
-\r
-#ifdef GEN_TREES_H\r
-local void gen_trees_header OF((void));\r
-#endif\r
-\r
-#ifndef DEBUG\r
-# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)\r
- /* Send a code of the given tree. c and tree must not have side effects */\r
-\r
-#else /* DEBUG */\r
-# define send_code(s, c, tree) \\r
- { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \\r
- send_bits(s, tree[c].Code, tree[c].Len); }\r
-#endif\r
-\r
-/* ===========================================================================\r
- * Output a short LSB first on the stream.\r
- * IN assertion: there is enough room in pendingBuf.\r
- */\r
-#define put_short(s, w) { \\r
- put_byte(s, (uch)((w) & 0xff)); \\r
- put_byte(s, (uch)((ush)(w) >> 8)); \\r
-}\r
-\r
-/* ===========================================================================\r
- * Send a value on a given number of bits.\r
- * IN assertion: length <= 16 and value fits in length bits.\r
- */\r
-#ifdef DEBUG\r
-local void send_bits OF((deflate_state *s, int value, int length));\r
-\r
-local void send_bits(s, value, length)\r
- deflate_state *s;\r
- int value; /* value to send */\r
- int length; /* number of bits */\r
-{\r
- Tracevv((stderr," l %2d v %4x ", length, value));\r
- Assert(length > 0 && length <= 15, "invalid length");\r
- s->bits_sent += (ulg)length;\r
-\r
- /* If not enough room in bi_buf, use (valid) bits from bi_buf and\r
- * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))\r
- * unused bits in value.\r
- */\r
- if (s->bi_valid > (int)Buf_size - length) {\r
- s->bi_buf |= (ush)value << s->bi_valid;\r
- put_short(s, s->bi_buf);\r
- s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);\r
- s->bi_valid += length - Buf_size;\r
- } else {\r
- s->bi_buf |= (ush)value << s->bi_valid;\r
- s->bi_valid += length;\r
- }\r
-}\r
-#else /* !DEBUG */\r
-\r
-#define send_bits(s, value, length) \\r
-{ int len = length;\\r
- if (s->bi_valid > (int)Buf_size - len) {\\r
- int val = value;\\r
- s->bi_buf |= (ush)val << s->bi_valid;\\r
- put_short(s, s->bi_buf);\\r
- s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\\r
- s->bi_valid += len - Buf_size;\\r
- } else {\\r
- s->bi_buf |= (ush)(value) << s->bi_valid;\\r
- s->bi_valid += len;\\r
- }\\r
-}\r
-#endif /* DEBUG */\r
-\r
-\r
-/* the arguments must not have side effects */\r
-\r
-/* ===========================================================================\r
- * Initialize the various 'constant' tables.\r
- */\r
-local void tr_static_init()\r
-{\r
-#if defined(GEN_TREES_H) || !defined(STDC)\r
- static int static_init_done = 0;\r
- int n; /* iterates over tree elements */\r
- int bits; /* bit counter */\r
- int length; /* length value */\r
- int code; /* code value */\r
- int dist; /* distance index */\r
- ush bl_count[MAX_BITS+1];\r
- /* number of codes at each bit length for an optimal tree */\r
-\r
- if (static_init_done) return;\r
-\r
- /* For some embedded targets, global variables are not initialized: */\r
-#ifdef NO_INIT_GLOBAL_POINTERS\r
- static_l_desc.static_tree = static_ltree;\r
- static_l_desc.extra_bits = extra_lbits;\r
- static_d_desc.static_tree = static_dtree;\r
- static_d_desc.extra_bits = extra_dbits;\r
- static_bl_desc.extra_bits = extra_blbits;\r
-#endif\r
-\r
- /* Initialize the mapping length (0..255) -> length code (0..28) */\r
- length = 0;\r
- for (code = 0; code < LENGTH_CODES-1; code++) {\r
- base_length[code] = length;\r
- for (n = 0; n < (1<<extra_lbits[code]); n++) {\r
- _length_code[length++] = (uch)code;\r
- }\r
- }\r
- Assert (length == 256, "tr_static_init: length != 256");\r
- /* Note that the length 255 (match length 258) can be represented\r
- * in two different ways: code 284 + 5 bits or code 285, so we\r
- * overwrite length_code[255] to use the best encoding:\r
- */\r
- _length_code[length-1] = (uch)code;\r
-\r
- /* Initialize the mapping dist (0..32K) -> dist code (0..29) */\r
- dist = 0;\r
- for (code = 0 ; code < 16; code++) {\r
- base_dist[code] = dist;\r
- for (n = 0; n < (1<<extra_dbits[code]); n++) {\r
- _dist_code[dist++] = (uch)code;\r
- }\r
- }\r
- Assert (dist == 256, "tr_static_init: dist != 256");\r
- dist >>= 7; /* from now on, all distances are divided by 128 */\r
- for ( ; code < D_CODES; code++) {\r
- base_dist[code] = dist << 7;\r
- for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {\r
- _dist_code[256 + dist++] = (uch)code;\r
- }\r
- }\r
- Assert (dist == 256, "tr_static_init: 256+dist != 512");\r
-\r
- /* Construct the codes of the static literal tree */\r
- for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;\r
- n = 0;\r
- while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;\r
- while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;\r
- while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;\r
- while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;\r
- /* Codes 286 and 287 do not exist, but we must include them in the\r
- * tree construction to get a canonical Huffman tree (longest code\r
- * all ones)\r
- */\r
- gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);\r
-\r
- /* The static distance tree is trivial: */\r
- for (n = 0; n < D_CODES; n++) {\r
- static_dtree[n].Len = 5;\r
- static_dtree[n].Code = bi_reverse((unsigned)n, 5);\r
- }\r
- static_init_done = 1;\r
-\r
-# ifdef GEN_TREES_H\r
- gen_trees_header();\r
-# endif\r
-#endif /* defined(GEN_TREES_H) || !defined(STDC) */\r
-}\r
-\r
-/* ===========================================================================\r
- * Genererate the file trees.h describing the static trees.\r
- */\r
-#ifdef GEN_TREES_H\r
-# ifndef DEBUG\r
-# include <stdio.h>\r
-# endif\r
-\r
-# define SEPARATOR(i, last, width) \\r
- ((i) == (last)? "\n};\n\n" : \\r
- ((i) % (width) == (width)-1 ? ",\n" : ", "))\r
-\r
-void gen_trees_header()\r
-{\r
- FILE *header = fopen("trees.h", "w");\r
- int i;\r
-\r
- Assert (header != NULL, "Can't open trees.h");\r
- fprintf(header,\r
- "/* header created automatically with -DGEN_TREES_H */\n\n");\r
-\r
- fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");\r
- for (i = 0; i < L_CODES+2; i++) {\r
- fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,\r
- static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));\r
- }\r
-\r
- fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");\r
- for (i = 0; i < D_CODES; i++) {\r
- fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,\r
- static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));\r
- }\r
-\r
- fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n");\r
- for (i = 0; i < DIST_CODE_LEN; i++) {\r
- fprintf(header, "%2u%s", _dist_code[i],\r
- SEPARATOR(i, DIST_CODE_LEN-1, 20));\r
- }\r
-\r
- fprintf(header,\r
- "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");\r
- for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {\r
- fprintf(header, "%2u%s", _length_code[i],\r
- SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));\r
- }\r
-\r
- fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");\r
- for (i = 0; i < LENGTH_CODES; i++) {\r
- fprintf(header, "%1u%s", base_length[i],\r
- SEPARATOR(i, LENGTH_CODES-1, 20));\r
- }\r
-\r
- fprintf(header, "local const int base_dist[D_CODES] = {\n");\r
- for (i = 0; i < D_CODES; i++) {\r
- fprintf(header, "%5u%s", base_dist[i],\r
- SEPARATOR(i, D_CODES-1, 10));\r
- }\r
-\r
- fclose(header);\r
-}\r
-#endif /* GEN_TREES_H */\r
-\r
-/* ===========================================================================\r
- * Initialize the tree data structures for a new zlib stream.\r
- */\r
-void ZLIB_INTERNAL _tr_init(s)\r
- deflate_state *s;\r
-{\r
- tr_static_init();\r
-\r
- s->l_desc.dyn_tree = s->dyn_ltree;\r
- s->l_desc.stat_desc = &static_l_desc;\r
-\r
- s->d_desc.dyn_tree = s->dyn_dtree;\r
- s->d_desc.stat_desc = &static_d_desc;\r
-\r
- s->bl_desc.dyn_tree = s->bl_tree;\r
- s->bl_desc.stat_desc = &static_bl_desc;\r
-\r
- s->bi_buf = 0;\r
- s->bi_valid = 0;\r
- s->last_eob_len = 8; /* enough lookahead for inflate */\r
-#ifdef DEBUG\r
- s->compressed_len = 0L;\r
- s->bits_sent = 0L;\r
-#endif\r
-\r
- /* Initialize the first block of the first file: */\r
- init_block(s);\r
-}\r
-\r
-/* ===========================================================================\r
- * Initialize a new block.\r
- */\r
-local void init_block(s)\r
- deflate_state *s;\r
-{\r
- int n; /* iterates over tree elements */\r
-\r
- /* Initialize the trees. */\r
- for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;\r
- for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;\r
- for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;\r
-\r
- s->dyn_ltree[END_BLOCK].Freq = 1;\r
- s->opt_len = s->static_len = 0L;\r
- s->last_lit = s->matches = 0;\r
-}\r
-\r
-#define SMALLEST 1\r
-/* Index within the heap array of least frequent node in the Huffman tree */\r
-\r
-\r
-/* ===========================================================================\r
- * Remove the smallest element from the heap and recreate the heap with\r
- * one less element. Updates heap and heap_len.\r
- */\r
-#define pqremove(s, tree, top) \\r
-{\\r
- top = s->heap[SMALLEST]; \\r
- s->heap[SMALLEST] = s->heap[s->heap_len--]; \\r
- pqdownheap(s, tree, SMALLEST); \\r
-}\r
-\r
-/* ===========================================================================\r
- * Compares to subtrees, using the tree depth as tie breaker when\r
- * the subtrees have equal frequency. This minimizes the worst case length.\r
- */\r
-#define smaller(tree, n, m, depth) \\r
- (tree[n].Freq < tree[m].Freq || \\r
- (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))\r
-\r
-/* ===========================================================================\r
- * Restore the heap property by moving down the tree starting at node k,\r
- * exchanging a node with the smallest of its two sons if necessary, stopping\r
- * when the heap property is re-established (each father smaller than its\r
- * two sons).\r
- */\r
-local void pqdownheap(s, tree, k)\r
- deflate_state *s;\r
- ct_data *tree; /* the tree to restore */\r
- int k; /* node to move down */\r
-{\r
- int v = s->heap[k];\r
- int j = k << 1; /* left son of k */\r
- while (j <= s->heap_len) {\r
- /* Set j to the smallest of the two sons: */\r
- if (j < s->heap_len &&\r
- smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {\r
- j++;\r
- }\r
- /* Exit if v is smaller than both sons */\r
- if (smaller(tree, v, s->heap[j], s->depth)) break;\r
-\r
- /* Exchange v with the smallest son */\r
- s->heap[k] = s->heap[j]; k = j;\r
-\r
- /* And continue down the tree, setting j to the left son of k */\r
- j <<= 1;\r
- }\r
- s->heap[k] = v;\r
-}\r
-\r
-/* ===========================================================================\r
- * Compute the optimal bit lengths for a tree and update the total bit length\r
- * for the current block.\r
- * IN assertion: the fields freq and dad are set, heap[heap_max] and\r
- * above are the tree nodes sorted by increasing frequency.\r
- * OUT assertions: the field len is set to the optimal bit length, the\r
- * array bl_count contains the frequencies for each bit length.\r
- * The length opt_len is updated; static_len is also updated if stree is\r
- * not null.\r
- */\r
-local void gen_bitlen(s, desc)\r
- deflate_state *s;\r
- tree_desc *desc; /* the tree descriptor */\r
-{\r
- ct_data *tree = desc->dyn_tree;\r
- int max_code = desc->max_code;\r
- const ct_data *stree = desc->stat_desc->static_tree;\r
- const intf *extra = desc->stat_desc->extra_bits;\r
- int base = desc->stat_desc->extra_base;\r
- int max_length = desc->stat_desc->max_length;\r
- int h; /* heap index */\r
- int n, m; /* iterate over the tree elements */\r
- int bits; /* bit length */\r
- int xbits; /* extra bits */\r
- ush f; /* frequency */\r
- int overflow = 0; /* number of elements with bit length too large */\r
-\r
- for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;\r
-\r
- /* In a first pass, compute the optimal bit lengths (which may\r
- * overflow in the case of the bit length tree).\r
- */\r
- tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */\r
-\r
- for (h = s->heap_max+1; h < HEAP_SIZE; h++) {\r
- n = s->heap[h];\r
- bits = tree[tree[n].Dad].Len + 1;\r
- if (bits > max_length) bits = max_length, overflow++;\r
- tree[n].Len = (ush)bits;\r
- /* We overwrite tree[n].Dad which is no longer needed */\r
-\r
- if (n > max_code) continue; /* not a leaf node */\r
-\r
- s->bl_count[bits]++;\r
- xbits = 0;\r
- if (n >= base) xbits = extra[n-base];\r
- f = tree[n].Freq;\r
- s->opt_len += (ulg)f * (bits + xbits);\r
- if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits);\r
- }\r
- if (overflow == 0) return;\r
-\r
- Trace((stderr,"\nbit length overflow\n"));\r
- /* This happens for example on obj2 and pic of the Calgary corpus */\r
-\r
- /* Find the first bit length which could increase: */\r
- do {\r
- bits = max_length-1;\r
- while (s->bl_count[bits] == 0) bits--;\r
- s->bl_count[bits]--; /* move one leaf down the tree */\r
- s->bl_count[bits+1] += 2; /* move one overflow item as its brother */\r
- s->bl_count[max_length]--;\r
- /* The brother of the overflow item also moves one step up,\r
- * but this does not affect bl_count[max_length]\r
- */\r
- overflow -= 2;\r
- } while (overflow > 0);\r
-\r
- /* Now recompute all bit lengths, scanning in increasing frequency.\r
- * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all\r
- * lengths instead of fixing only the wrong ones. This idea is taken\r
- * from 'ar' written by Haruhiko Okumura.)\r
- */\r
- for (bits = max_length; bits != 0; bits--) {\r
- n = s->bl_count[bits];\r
- while (n != 0) {\r
- m = s->heap[--h];\r
- if (m > max_code) continue;\r
- if ((unsigned) tree[m].Len != (unsigned) bits) {\r
- Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));\r
- s->opt_len += ((long)bits - (long)tree[m].Len)\r
- *(long)tree[m].Freq;\r
- tree[m].Len = (ush)bits;\r
- }\r
- n--;\r
- }\r
- }\r
-}\r
-\r
-/* ===========================================================================\r
- * Generate the codes for a given tree and bit counts (which need not be\r
- * optimal).\r
- * IN assertion: the array bl_count contains the bit length statistics for\r
- * the given tree and the field len is set for all tree elements.\r
- * OUT assertion: the field code is set for all tree elements of non\r
- * zero code length.\r
- */\r
-local void gen_codes (tree, max_code, bl_count)\r
- ct_data *tree; /* the tree to decorate */\r
- int max_code; /* largest code with non zero frequency */\r
- ushf *bl_count; /* number of codes at each bit length */\r
-{\r
- ush next_code[MAX_BITS+1]; /* next code value for each bit length */\r
- ush code = 0; /* running code value */\r
- int bits; /* bit index */\r
- int n; /* code index */\r
-\r
- /* The distribution counts are first used to generate the code values\r
- * without bit reversal.\r
- */\r
- for (bits = 1; bits <= MAX_BITS; bits++) {\r
- next_code[bits] = code = (code + bl_count[bits-1]) << 1;\r
- }\r
- /* Check that the bit counts in bl_count are consistent. The last code\r
- * must be all ones.\r
- */\r
- Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,\r
- "inconsistent bit counts");\r
- Tracev((stderr,"\ngen_codes: max_code %d ", max_code));\r
-\r
- for (n = 0; n <= max_code; n++) {\r
- int len = tree[n].Len;\r
- if (len == 0) continue;\r
- /* Now reverse the bits */\r
- tree[n].Code = bi_reverse(next_code[len]++, len);\r
-\r
- Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",\r
- n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));\r
- }\r
-}\r
-\r
-/* ===========================================================================\r
- * Construct one Huffman tree and assigns the code bit strings and lengths.\r
- * Update the total bit length for the current block.\r
- * IN assertion: the field freq is set for all tree elements.\r
- * OUT assertions: the fields len and code are set to the optimal bit length\r
- * and corresponding code. The length opt_len is updated; static_len is\r
- * also updated if stree is not null. The field max_code is set.\r
- */\r
-local void build_tree(s, desc)\r
- deflate_state *s;\r
- tree_desc *desc; /* the tree descriptor */\r
-{\r
- ct_data *tree = desc->dyn_tree;\r
- const ct_data *stree = desc->stat_desc->static_tree;\r
- int elems = desc->stat_desc->elems;\r
- int n, m; /* iterate over heap elements */\r
- int max_code = -1; /* largest code with non zero frequency */\r
- int node; /* new node being created */\r
-\r
- /* Construct the initial heap, with least frequent element in\r
- * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].\r
- * heap[0] is not used.\r
- */\r
- s->heap_len = 0, s->heap_max = HEAP_SIZE;\r
-\r
- for (n = 0; n < elems; n++) {\r
- if (tree[n].Freq != 0) {\r
- s->heap[++(s->heap_len)] = max_code = n;\r
- s->depth[n] = 0;\r
- } else {\r
- tree[n].Len = 0;\r
- }\r
- }\r
-\r
- /* The pkzip format requires that at least one distance code exists,\r
- * and that at least one bit should be sent even if there is only one\r
- * possible code. So to avoid special checks later on we force at least\r
- * two codes of non zero frequency.\r
- */\r
- while (s->heap_len < 2) {\r
- node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);\r
- tree[node].Freq = 1;\r
- s->depth[node] = 0;\r
- s->opt_len--; if (stree) s->static_len -= stree[node].Len;\r
- /* node is 0 or 1 so it does not have extra bits */\r
- }\r
- desc->max_code = max_code;\r
-\r
- /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,\r
- * establish sub-heaps of increasing lengths:\r
- */\r
- for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);\r
-\r
- /* Construct the Huffman tree by repeatedly combining the least two\r
- * frequent nodes.\r
- */\r
- node = elems; /* next internal node of the tree */\r
- do {\r
- pqremove(s, tree, n); /* n = node of least frequency */\r
- m = s->heap[SMALLEST]; /* m = node of next least frequency */\r
-\r
- s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */\r
- s->heap[--(s->heap_max)] = m;\r
-\r
- /* Create a new node father of n and m */\r
- tree[node].Freq = tree[n].Freq + tree[m].Freq;\r
- s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?\r
- s->depth[n] : s->depth[m]) + 1);\r
- tree[n].Dad = tree[m].Dad = (ush)node;\r
-#ifdef DUMP_BL_TREE\r
- if (tree == s->bl_tree) {\r
- fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",\r
- node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);\r
- }\r
-#endif\r
- /* and insert the new node in the heap */\r
- s->heap[SMALLEST] = node++;\r
- pqdownheap(s, tree, SMALLEST);\r
-\r
- } while (s->heap_len >= 2);\r
-\r
- s->heap[--(s->heap_max)] = s->heap[SMALLEST];\r
-\r
- /* At this point, the fields freq and dad are set. We can now\r
- * generate the bit lengths.\r
- */\r
- gen_bitlen(s, (tree_desc *)desc);\r
-\r
- /* The field len is now set, we can generate the bit codes */\r
- gen_codes ((ct_data *)tree, max_code, s->bl_count);\r
-}\r
-\r
-/* ===========================================================================\r
- * Scan a literal or distance tree to determine the frequencies of the codes\r
- * in the bit length tree.\r
- */\r
-local void scan_tree (s, tree, max_code)\r
- deflate_state *s;\r
- ct_data *tree; /* the tree to be scanned */\r
- int max_code; /* and its largest code of non zero frequency */\r
-{\r
- int n; /* iterates over all tree elements */\r
- int prevlen = -1; /* last emitted length */\r
- int curlen; /* length of current code */\r
- int nextlen = tree[0].Len; /* length of next code */\r
- int count = 0; /* repeat count of the current code */\r
- int max_count = 7; /* max repeat count */\r
- int min_count = 4; /* min repeat count */\r
-\r
- if (nextlen == 0) max_count = 138, min_count = 3;\r
- tree[max_code+1].Len = (ush)0xffff; /* guard */\r
-\r
- for (n = 0; n <= max_code; n++) {\r
- curlen = nextlen; nextlen = tree[n+1].Len;\r
- if (++count < max_count && curlen == nextlen) {\r
- continue;\r
- } else if (count < min_count) {\r
- s->bl_tree[curlen].Freq += count;\r
- } else if (curlen != 0) {\r
- if (curlen != prevlen) s->bl_tree[curlen].Freq++;\r
- s->bl_tree[REP_3_6].Freq++;\r
- } else if (count <= 10) {\r
- s->bl_tree[REPZ_3_10].Freq++;\r
- } else {\r
- s->bl_tree[REPZ_11_138].Freq++;\r
- }\r
- count = 0; prevlen = curlen;\r
- if (nextlen == 0) {\r
- max_count = 138, min_count = 3;\r
- } else if (curlen == nextlen) {\r
- max_count = 6, min_count = 3;\r
- } else {\r
- max_count = 7, min_count = 4;\r
- }\r
- }\r
-}\r
-\r
-/* ===========================================================================\r
- * Send a literal or distance tree in compressed form, using the codes in\r
- * bl_tree.\r
- */\r
-local void send_tree (s, tree, max_code)\r
- deflate_state *s;\r
- ct_data *tree; /* the tree to be scanned */\r
- int max_code; /* and its largest code of non zero frequency */\r
-{\r
- int n; /* iterates over all tree elements */\r
- int prevlen = -1; /* last emitted length */\r
- int curlen; /* length of current code */\r
- int nextlen = tree[0].Len; /* length of next code */\r
- int count = 0; /* repeat count of the current code */\r
- int max_count = 7; /* max repeat count */\r
- int min_count = 4; /* min repeat count */\r
-\r
- /* tree[max_code+1].Len = -1; */ /* guard already set */\r
- if (nextlen == 0) max_count = 138, min_count = 3;\r
-\r
- for (n = 0; n <= max_code; n++) {\r
- curlen = nextlen; nextlen = tree[n+1].Len;\r
- if (++count < max_count && curlen == nextlen) {\r
- continue;\r
- } else if (count < min_count) {\r
- do { send_code(s, curlen, s->bl_tree); } while (--count != 0);\r
-\r
- } else if (curlen != 0) {\r
- if (curlen != prevlen) {\r
- send_code(s, curlen, s->bl_tree); count--;\r
- }\r
- Assert(count >= 3 && count <= 6, " 3_6?");\r
- send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);\r
-\r
- } else if (count <= 10) {\r
- send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);\r
-\r
- } else {\r
- send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);\r
- }\r
- count = 0; prevlen = curlen;\r
- if (nextlen == 0) {\r
- max_count = 138, min_count = 3;\r
- } else if (curlen == nextlen) {\r
- max_count = 6, min_count = 3;\r
- } else {\r
- max_count = 7, min_count = 4;\r
- }\r
- }\r
-}\r
-\r
-/* ===========================================================================\r
- * Construct the Huffman tree for the bit lengths and return the index in\r
- * bl_order of the last bit length code to send.\r
- */\r
-local int build_bl_tree(s)\r
- deflate_state *s;\r
-{\r
- int max_blindex; /* index of last bit length code of non zero freq */\r
-\r
- /* Determine the bit length frequencies for literal and distance trees */\r
- scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);\r
- scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);\r
-\r
- /* Build the bit length tree: */\r
- build_tree(s, (tree_desc *)(&(s->bl_desc)));\r
- /* opt_len now includes the length of the tree representations, except\r
- * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.\r
- */\r
-\r
- /* Determine the number of bit length codes to send. The pkzip format\r
- * requires that at least 4 bit length codes be sent. (appnote.txt says\r
- * 3 but the actual value used is 4.)\r
- */\r
- for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {\r
- if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;\r
- }\r
- /* Update opt_len to include the bit length tree and counts */\r
- s->opt_len += 3*(max_blindex+1) + 5+5+4;\r
- Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",\r
- s->opt_len, s->static_len));\r
-\r
- return max_blindex;\r
-}\r
-\r
-/* ===========================================================================\r
- * Send the header for a block using dynamic Huffman trees: the counts, the\r
- * lengths of the bit length codes, the literal tree and the distance tree.\r
- * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.\r
- */\r
-local void send_all_trees(s, lcodes, dcodes, blcodes)\r
- deflate_state *s;\r
- int lcodes, dcodes, blcodes; /* number of codes for each tree */\r
-{\r
- int rank; /* index in bl_order */\r
-\r
- Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");\r
- Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,\r
- "too many codes");\r
- Tracev((stderr, "\nbl counts: "));\r
- send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */\r
- send_bits(s, dcodes-1, 5);\r
- send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */\r
- for (rank = 0; rank < blcodes; rank++) {\r
- Tracev((stderr, "\nbl code %2d ", bl_order[rank]));\r
- send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);\r
- }\r
- Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));\r
-\r
- send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */\r
- Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));\r
-\r
- send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */\r
- Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));\r
-}\r
-\r
-/* ===========================================================================\r
- * Send a stored block\r
- */\r
-void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)\r
- deflate_state *s;\r
- charf *buf; /* input block */\r
- ulg stored_len; /* length of input block */\r
- int last; /* one if this is the last block for a file */\r
-{\r
- send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */\r
-#ifdef DEBUG\r
- s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;\r
- s->compressed_len += (stored_len + 4) << 3;\r
-#endif\r
- copy_block(s, buf, (unsigned)stored_len, 1); /* with header */\r
-}\r
-\r
-/* ===========================================================================\r
- * Send one empty static block to give enough lookahead for inflate.\r
- * This takes 10 bits, of which 7 may remain in the bit buffer.\r
- * The current inflate code requires 9 bits of lookahead. If the\r
- * last two codes for the previous block (real code plus EOB) were coded\r
- * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode\r
- * the last real code. In this case we send two empty static blocks instead\r
- * of one. (There are no problems if the previous block is stored or fixed.)\r
- * To simplify the code, we assume the worst case of last real code encoded\r
- * on one bit only.\r
- */\r
-void ZLIB_INTERNAL _tr_align(s)\r
- deflate_state *s;\r
-{\r
- send_bits(s, STATIC_TREES<<1, 3);\r
- send_code(s, END_BLOCK, static_ltree);\r
-#ifdef DEBUG\r
- s->compressed_len += 10L; /* 3 for block type, 7 for EOB */\r
-#endif\r
- bi_flush(s);\r
- /* Of the 10 bits for the empty block, we have already sent\r
- * (10 - bi_valid) bits. The lookahead for the last real code (before\r
- * the EOB of the previous block) was thus at least one plus the length\r
- * of the EOB plus what we have just sent of the empty static block.\r
- */\r
- if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {\r
- send_bits(s, STATIC_TREES<<1, 3);\r
- send_code(s, END_BLOCK, static_ltree);\r
-#ifdef DEBUG\r
- s->compressed_len += 10L;\r
-#endif\r
- bi_flush(s);\r
- }\r
- s->last_eob_len = 7;\r
-}\r
-\r
-/* ===========================================================================\r
- * Determine the best encoding for the current block: dynamic trees, static\r
- * trees or store, and output the encoded block to the zip file.\r
- */\r
-void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)\r
- deflate_state *s;\r
- charf *buf; /* input block, or NULL if too old */\r
- ulg stored_len; /* length of input block */\r
- int last; /* one if this is the last block for a file */\r
-{\r
- ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */\r
- int max_blindex = 0; /* index of last bit length code of non zero freq */\r
-\r
- /* Build the Huffman trees unless a stored block is forced */\r
- if (s->level > 0) {\r
-\r
- /* Check if the file is binary or text */\r
- if (s->strm->data_type == Z_UNKNOWN)\r
- s->strm->data_type = detect_data_type(s);\r
-\r
- /* Construct the literal and distance trees */\r
- build_tree(s, (tree_desc *)(&(s->l_desc)));\r
- Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,\r
- s->static_len));\r
-\r
- build_tree(s, (tree_desc *)(&(s->d_desc)));\r
- Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,\r
- s->static_len));\r
- /* At this point, opt_len and static_len are the total bit lengths of\r
- * the compressed block data, excluding the tree representations.\r
- */\r
-\r
- /* Build the bit length tree for the above two trees, and get the index\r
- * in bl_order of the last bit length code to send.\r
- */\r
- max_blindex = build_bl_tree(s);\r
-\r
- /* Determine the best encoding. Compute the block lengths in bytes. */\r
- opt_lenb = (s->opt_len+3+7)>>3;\r
- static_lenb = (s->static_len+3+7)>>3;\r
-\r
- Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",\r
- opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,\r
- s->last_lit));\r
-\r
- if (static_lenb <= opt_lenb) opt_lenb = static_lenb;\r
-\r
- } else {\r
- Assert(buf != (char*)0, "lost buf");\r
- opt_lenb = static_lenb = stored_len + 5; /* force a stored block */\r
- }\r
-\r
-#ifdef FORCE_STORED\r
- if (buf != (char*)0) { /* force stored block */\r
-#else\r
- if (stored_len+4 <= opt_lenb && buf != (char*)0) {\r
- /* 4: two words for the lengths */\r
-#endif\r
- /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.\r
- * Otherwise we can't have processed more than WSIZE input bytes since\r
- * the last block flush, because compression would have been\r
- * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to\r
- * transform a block into a stored block.\r
- */\r
- _tr_stored_block(s, buf, stored_len, last);\r
-\r
-#ifdef FORCE_STATIC\r
- } else if (static_lenb >= 0) { /* force static trees */\r
-#else\r
- } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {\r
-#endif\r
- send_bits(s, (STATIC_TREES<<1)+last, 3);\r
- compress_block(s, (ct_data *)static_ltree, (ct_data *)static_dtree);\r
-#ifdef DEBUG\r
- s->compressed_len += 3 + s->static_len;\r
-#endif\r
- } else {\r
- send_bits(s, (DYN_TREES<<1)+last, 3);\r
- send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,\r
- max_blindex+1);\r
- compress_block(s, (ct_data *)s->dyn_ltree, (ct_data *)s->dyn_dtree);\r
-#ifdef DEBUG\r
- s->compressed_len += 3 + s->opt_len;\r
-#endif\r
- }\r
- Assert (s->compressed_len == s->bits_sent, "bad compressed size");\r
- /* The above check is made mod 2^32, for files larger than 512 MB\r
- * and uLong implemented on 32 bits.\r
- */\r
- init_block(s);\r
-\r
- if (last) {\r
- bi_windup(s);\r
-#ifdef DEBUG\r
- s->compressed_len += 7; /* align on byte boundary */\r
-#endif\r
- }\r
- Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,\r
- s->compressed_len-7*last));\r
-}\r
-\r
-/* ===========================================================================\r
- * Save the match info and tally the frequency counts. Return true if\r
- * the current block must be flushed.\r
- */\r
-int ZLIB_INTERNAL _tr_tally (s, dist, lc)\r
- deflate_state *s;\r
- unsigned dist; /* distance of matched string */\r
- unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */\r
-{\r
- s->d_buf[s->last_lit] = (ush)dist;\r
- s->l_buf[s->last_lit++] = (uch)lc;\r
- if (dist == 0) {\r
- /* lc is the unmatched char */\r
- s->dyn_ltree[lc].Freq++;\r
- } else {\r
- s->matches++;\r
- /* Here, lc is the match length - MIN_MATCH */\r
- dist--; /* dist = match distance - 1 */\r
- Assert((ush)dist < (ush)MAX_DIST(s) &&\r
- (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&\r
- (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");\r
-\r
- s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;\r
- s->dyn_dtree[d_code(dist)].Freq++;\r
- }\r
-\r
-#ifdef TRUNCATE_BLOCK\r
- /* Try to guess if it is profitable to stop the current block here */\r
- if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {\r
- /* Compute an upper bound for the compressed length */\r
- ulg out_length = (ulg)s->last_lit*8L;\r
- ulg in_length = (ulg)((long)s->strstart - s->block_start);\r
- int dcode;\r
- for (dcode = 0; dcode < D_CODES; dcode++) {\r
- out_length += (ulg)s->dyn_dtree[dcode].Freq *\r
- (5L+extra_dbits[dcode]);\r
- }\r
- out_length >>= 3;\r
- Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",\r
- s->last_lit, in_length, out_length,\r
- 100L - out_length*100L/in_length));\r
- if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;\r
- }\r
-#endif\r
- return (s->last_lit == s->lit_bufsize-1);\r
- /* We avoid equality with lit_bufsize because of wraparound at 64K\r
- * on 16 bit machines and because stored blocks are restricted to\r
- * 64K-1 bytes.\r
- */\r
-}\r
-\r
-/* ===========================================================================\r
- * Send the block data compressed using the given Huffman trees\r
- */\r
-local void compress_block(s, ltree, dtree)\r
- deflate_state *s;\r
- ct_data *ltree; /* literal tree */\r
- ct_data *dtree; /* distance tree */\r
-{\r
- unsigned dist; /* distance of matched string */\r
- int lc; /* match length or unmatched char (if dist == 0) */\r
- unsigned lx = 0; /* running index in l_buf */\r
- unsigned code; /* the code to send */\r
- int extra; /* number of extra bits to send */\r
-\r
- if (s->last_lit != 0) do {\r
- dist = s->d_buf[lx];\r
- lc = s->l_buf[lx++];\r
- if (dist == 0) {\r
- send_code(s, lc, ltree); /* send a literal byte */\r
- Tracecv(isgraph(lc), (stderr," '%c' ", lc));\r
- } else {\r
- /* Here, lc is the match length - MIN_MATCH */\r
- code = _length_code[lc];\r
- send_code(s, code+LITERALS+1, ltree); /* send the length code */\r
- extra = extra_lbits[code];\r
- if (extra != 0) {\r
- lc -= base_length[code];\r
- send_bits(s, lc, extra); /* send the extra length bits */\r
- }\r
- dist--; /* dist is now the match distance - 1 */\r
- code = d_code(dist);\r
- Assert (code < D_CODES, "bad d_code");\r
-\r
- send_code(s, code, dtree); /* send the distance code */\r
- extra = extra_dbits[code];\r
- if (extra != 0) {\r
- dist -= base_dist[code];\r
- send_bits(s, dist, extra); /* send the extra distance bits */\r
- }\r
- } /* literal or match pair ? */\r
-\r
- /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */\r
- Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,\r
- "pendingBuf overflow");\r
-\r
- } while (lx < s->last_lit);\r
-\r
- send_code(s, END_BLOCK, ltree);\r
- s->last_eob_len = ltree[END_BLOCK].Len;\r
-}\r
-\r
-/* ===========================================================================\r
- * Check if the data type is TEXT or BINARY, using the following algorithm:\r
- * - TEXT if the two conditions below are satisfied:\r
- * a) There are no non-portable control characters belonging to the\r
- * "black list" (0..6, 14..25, 28..31).\r
- * b) There is at least one printable character belonging to the\r
- * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).\r
- * - BINARY otherwise.\r
- * - The following partially-portable control characters form a\r
- * "gray list" that is ignored in this detection algorithm:\r
- * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).\r
- * IN assertion: the fields Freq of dyn_ltree are set.\r
- */\r
-local int detect_data_type(s)\r
- deflate_state *s;\r
-{\r
- /* black_mask is the bit mask of black-listed bytes\r
- * set bits 0..6, 14..25, and 28..31\r
- * 0xf3ffc07f = binary 11110011111111111100000001111111\r
- */\r
- unsigned long black_mask = 0xf3ffc07fUL;\r
- int n;\r
-\r
- /* Check for non-textual ("black-listed") bytes. */\r
- for (n = 0; n <= 31; n++, black_mask >>= 1)\r
- if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0))\r
- return Z_BINARY;\r
-\r
- /* Check for textual ("white-listed") bytes. */\r
- if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0\r
- || s->dyn_ltree[13].Freq != 0)\r
- return Z_TEXT;\r
- for (n = 32; n < LITERALS; n++)\r
- if (s->dyn_ltree[n].Freq != 0)\r
- return Z_TEXT;\r
-\r
- /* There are no "black-listed" or "white-listed" bytes:\r
- * this stream either is empty or has tolerated ("gray-listed") bytes only.\r
- */\r
- return Z_BINARY;\r
-}\r
-\r
-/* ===========================================================================\r
- * Reverse the first len bits of a code, using straightforward code (a faster\r
- * method would use a table)\r
- * IN assertion: 1 <= len <= 15\r
- */\r
-local unsigned bi_reverse(code, len)\r
- unsigned code; /* the value to invert */\r
- int len; /* its bit length */\r
-{\r
- register unsigned res = 0;\r
- do {\r
- res |= code & 1;\r
- code >>= 1, res <<= 1;\r
- } while (--len > 0);\r
- return res >> 1;\r
-}\r
-\r
-/* ===========================================================================\r
- * Flush the bit buffer, keeping at most 7 bits in it.\r
- */\r
-local void bi_flush(s)\r
- deflate_state *s;\r
-{\r
- if (s->bi_valid == 16) {\r
- put_short(s, s->bi_buf);\r
- s->bi_buf = 0;\r
- s->bi_valid = 0;\r
- } else if (s->bi_valid >= 8) {\r
- put_byte(s, (Byte)s->bi_buf);\r
- s->bi_buf >>= 8;\r
- s->bi_valid -= 8;\r
- }\r
-}\r
-\r
-/* ===========================================================================\r
- * Flush the bit buffer and align the output on a byte boundary\r
- */\r
-local void bi_windup(s)\r
- deflate_state *s;\r
-{\r
- if (s->bi_valid > 8) {\r
- put_short(s, s->bi_buf);\r
- } else if (s->bi_valid > 0) {\r
- put_byte(s, (Byte)s->bi_buf);\r
- }\r
- s->bi_buf = 0;\r
- s->bi_valid = 0;\r
-#ifdef DEBUG\r
- s->bits_sent = (s->bits_sent+7) & ~7;\r
-#endif\r
-}\r
-\r
-/* ===========================================================================\r
- * Copy a stored block, storing first the length and its\r
- * one's complement if requested.\r
- */\r
-local void copy_block(s, buf, len, header)\r
- deflate_state *s;\r
- charf *buf; /* the input data */\r
- unsigned len; /* its length */\r
- int header; /* true if block header must be written */\r
-{\r
- bi_windup(s); /* align on byte boundary */\r
- s->last_eob_len = 8; /* enough lookahead for inflate */\r
-\r
- if (header) {\r
- put_short(s, (ush)len);\r
- put_short(s, (ush)~len);\r
-#ifdef DEBUG\r
- s->bits_sent += 2*16;\r
-#endif\r
- }\r
-#ifdef DEBUG\r
- s->bits_sent += (ulg)len<<3;\r
-#endif\r
- while (len--) {\r
- put_byte(s, *buf++);\r
- }\r
-}\r
+++ /dev/null
-/* header created automatically with -DGEN_TREES_H */\r
-\r
-local const ct_data static_ltree[L_CODES+2] = {\r
-{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},\r
-{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},\r
-{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},\r
-{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},\r
-{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},\r
-{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},\r
-{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},\r
-{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},\r
-{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},\r
-{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},\r
-{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},\r
-{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},\r
-{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},\r
-{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},\r
-{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},\r
-{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},\r
-{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},\r
-{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},\r
-{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},\r
-{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},\r
-{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},\r
-{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},\r
-{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},\r
-{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},\r
-{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},\r
-{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},\r
-{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},\r
-{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},\r
-{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},\r
-{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},\r
-{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},\r
-{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},\r
-{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},\r
-{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},\r
-{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},\r
-{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},\r
-{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},\r
-{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},\r
-{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},\r
-{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},\r
-{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},\r
-{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},\r
-{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},\r
-{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},\r
-{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},\r
-{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},\r
-{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},\r
-{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},\r
-{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},\r
-{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},\r
-{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},\r
-{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},\r
-{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},\r
-{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},\r
-{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},\r
-{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},\r
-{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},\r
-{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}\r
-};\r
-\r
-local const ct_data static_dtree[D_CODES] = {\r
-{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},\r
-{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},\r
-{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},\r
-{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},\r
-{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},\r
-{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}\r
-};\r
-\r
-const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\r
- 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,\r
- 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,\r
-10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,\r
-11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,\r
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,\r
-13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,\r
-13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\r
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\r
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,\r
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,\r
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,\r
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,\r
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,\r
-18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,\r
-23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\r
-24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,\r
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,\r
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,\r
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,\r
-27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\r
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\r
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,\r
-28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,\r
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,\r
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,\r
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29\r
-};\r
-\r
-const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\r
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,\r
-13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,\r
-17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,\r
-19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,\r
-21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,\r
-22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,\r
-23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\r
-24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,\r
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,\r
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,\r
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,\r
-26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,\r
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28\r
-};\r
-\r
-local const int base_length[LENGTH_CODES] = {\r
-0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,\r
-64, 80, 96, 112, 128, 160, 192, 224, 0\r
-};\r
-\r
-local const int base_dist[D_CODES] = {\r
- 0, 1, 2, 3, 4, 6, 8, 12, 16, 24,\r
- 32, 48, 64, 96, 128, 192, 256, 384, 512, 768,\r
- 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576\r
-};\r
-\r
+++ /dev/null
-/* uncompr.c -- decompress a memory buffer\r
- * Copyright (C) 1995-2003, 2010 Jean-loup Gailly.\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* \param (#) $Id$ */\r
-\r
-#define ZLIB_INTERNAL\r
-#include "zlib.h"\r
-\r
-/* ===========================================================================\r
- Decompresses the source buffer into the destination buffer. sourceLen is\r
- the byte length of the source buffer. Upon entry, destLen is the total\r
- size of the destination buffer, which must be large enough to hold the\r
- entire uncompressed data. (The size of the uncompressed data must have\r
- been saved previously by the compressor and transmitted to the decompressor\r
- by some mechanism outside the scope of this compression library.)\r
- Upon exit, destLen is the actual size of the compressed buffer.\r
-\r
- uncompress returns Z_OK if success, Z_MEM_ERROR if there was not\r
- enough memory, Z_BUF_ERROR if there was not enough room in the output\r
- buffer, or Z_DATA_ERROR if the input data was corrupted.\r
-*/\r
-int ZEXPORT uncompress (dest, destLen, source, sourceLen)\r
- Bytef *dest;\r
- uLongf *destLen;\r
- const Bytef *source;\r
- uLong sourceLen;\r
-{\r
- z_stream stream;\r
- int err;\r
-\r
- stream.next_in = (Bytef*)source;\r
- stream.avail_in = (uInt)sourceLen;\r
- /* Check for source > 64K on 16-bit machine: */\r
- if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;\r
-\r
- stream.next_out = dest;\r
- stream.avail_out = (uInt)*destLen;\r
- if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;\r
-\r
- stream.zalloc = (alloc_func)0;\r
- stream.zfree = (free_func)0;\r
-\r
- err = inflateInit(&stream);\r
- if (err != Z_OK) return err;\r
-\r
- err = inflate(&stream, Z_FINISH);\r
- if (err != Z_STREAM_END) {\r
- inflateEnd(&stream);\r
- if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))\r
- return Z_DATA_ERROR;\r
- return err;\r
- }\r
- *destLen = stream.total_out;\r
-\r
- err = inflateEnd(&stream);\r
- return err;\r
-}\r
+++ /dev/null
-/* zlib.h -- interface of the 'zlib' general purpose compression library\r
- version 1.2.5, April 19th, 2010\r
-\r
- Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler\r
-\r
- This software is provided 'as-is', without any express or implied\r
- warranty. In no event will the authors be held liable for any damages\r
- arising from the use of this software.\r
-\r
- Permission is granted to anyone to use this software for any purpose,\r
- including commercial applications, and to alter it and redistribute it\r
- freely, subject to the following restrictions:\r
-\r
- 1. The origin of this software must not be misrepresented; you must not\r
- claim that you wrote the original software. If you use this software\r
- in a product, an acknowledgment in the product documentation would be\r
- appreciated but is not required.\r
- 2. Altered source versions must be plainly marked as such, and must not be\r
- misrepresented as being the original software.\r
- 3. This notice may not be removed or altered from any source distribution.\r
-\r
- Jean-loup Gailly Mark Adler\r
- jloup@gzip.org madler@alumni.caltech.edu\r
-\r
-\r
- The data format used by the zlib library is described by RFCs (Request for\r
- Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt\r
- (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).\r
-*/\r
-\r
-#ifndef ZLIB_H\r
-#define ZLIB_H\r
-\r
-#include "zconf.h"\r
-\r
-#ifdef __cplusplus\r
-extern "C" {\r
-#endif\r
-\r
-#define ZLIB_VERSION "1.2.5"\r
-#define ZLIB_VERNUM 0x1250\r
-#define ZLIB_VER_MAJOR 1\r
-#define ZLIB_VER_MINOR 2\r
-#define ZLIB_VER_REVISION 5\r
-#define ZLIB_VER_SUBREVISION 0\r
-\r
-/*\r
- The 'zlib' compression library provides in-memory compression and\r
- decompression functions, including integrity checks of the uncompressed data.\r
- This version of the library supports only one compression method (deflation)\r
- but other algorithms will be added later and will have the same stream\r
- interface.\r
-\r
- Compression can be done in a single step if the buffers are large enough,\r
- or can be done by repeated calls of the compression function. In the latter\r
- case, the application must provide more input and/or consume the output\r
- (providing more output space) before each call.\r
-\r
- The compressed data format used by default by the in-memory functions is\r
- the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped\r
- around a deflate stream, which is itself documented in RFC 1951.\r
-\r
- The library also supports reading and writing files in gzip (.gz) format\r
- with an interface similar to that of stdio using the functions that start\r
- with "gz". The gzip format is different from the zlib format. gzip is a\r
- gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.\r
-\r
- This library can optionally read and write gzip streams in memory as well.\r
-\r
- The zlib format was designed to be compact and fast for use in memory\r
- and on communications channels. The gzip format was designed for single-\r
- file compression on file systems, has a larger header than zlib to maintain\r
- directory information, and uses a different, slower check method than zlib.\r
-\r
- The library does not install any signal handler. The decoder checks\r
- the consistency of the compressed data, so the library should never crash\r
- even in case of corrupted input.\r
-*/\r
-\r
-typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));\r
-typedef void (*free_func) OF((voidpf opaque, voidpf address));\r
-\r
-struct internal_state;\r
-\r
-typedef struct z_stream_s {\r
- Bytef *next_in; /* next input byte */\r
- uInt avail_in; /* number of bytes available at next_in */\r
- uLong total_in; /* total nb of input bytes read so far */\r
-\r
- Bytef *next_out; /* next output byte should be put there */\r
- uInt avail_out; /* remaining free space at next_out */\r
- uLong total_out; /* total nb of bytes output so far */\r
-\r
- char *msg; /* last error message, NULL if no error */\r
- struct internal_state FAR *state; /* not visible by applications */\r
-\r
- alloc_func zalloc; /* used to allocate the internal state */\r
- free_func zfree; /* used to free the internal state */\r
- voidpf opaque; /* private data object passed to zalloc and zfree */\r
-\r
- int data_type; /* best guess about the data type: binary or text */\r
- uLong adler; /* adler32 value of the uncompressed data */\r
- uLong reserved; /* reserved for future use */\r
-} z_stream;\r
-\r
-typedef z_stream FAR *z_streamp;\r
-\r
-/*\r
- gzip header information passed to and from zlib routines. See RFC 1952\r
- for more details on the meanings of these fields.\r
-*/\r
-typedef struct gz_header_s {\r
- int text; /* true if compressed data believed to be text */\r
- uLong time; /* modification time */\r
- int xflags; /* extra flags (not used when writing a gzip file) */\r
- int os; /* operating system */\r
- Bytef *extra; /* pointer to extra field or Z_NULL if none */\r
- uInt extra_len; /* extra field length (valid if extra != Z_NULL) */\r
- uInt extra_max; /* space at extra (only when reading header) */\r
- Bytef *name; /* pointer to zero-terminated file name or Z_NULL */\r
- uInt name_max; /* space at name (only when reading header) */\r
- Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */\r
- uInt comm_max; /* space at comment (only when reading header) */\r
- int hcrc; /* true if there was or will be a header crc */\r
- int done; /* true when done reading gzip header (not used\r
- when writing a gzip file) */\r
-} gz_header;\r
-\r
-typedef gz_header FAR *gz_headerp;\r
-\r
-/*\r
- The application must update next_in and avail_in when avail_in has dropped\r
- to zero. It must update next_out and avail_out when avail_out has dropped\r
- to zero. The application must initialize zalloc, zfree and opaque before\r
- calling the init function. All other fields are set by the compression\r
- library and must not be updated by the application.\r
-\r
- The opaque value provided by the application will be passed as the first\r
- parameter for calls of zalloc and zfree. This can be useful for custom\r
- memory management. The compression library attaches no meaning to the\r
- opaque value.\r
-\r
- zalloc must return Z_NULL if there is not enough memory for the object.\r
- If zlib is used in a multi-threaded application, zalloc and zfree must be\r
- thread safe.\r
-\r
- On 16-bit systems, the functions zalloc and zfree must be able to allocate\r
- exactly 65536 bytes, but will not be required to allocate more than this if\r
- the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers\r
- returned by zalloc for objects of exactly 65536 bytes *must* have their\r
- offset normalized to zero. The default allocation function provided by this\r
- library ensures this (see zutil.c). To reduce memory requirements and avoid\r
- any allocation of 64K objects, at the expense of compression ratio, compile\r
- the library with -DMAX_WBITS=14 (see zconf.h).\r
-\r
- The fields total_in and total_out can be used for statistics or progress\r
- reports. After compression, total_in holds the total size of the\r
- uncompressed data and may be saved for use in the decompressor (particularly\r
- if the decompressor wants to decompress everything in a single step).\r
-*/\r
-\r
- /* constants */\r
-\r
-#define Z_NO_FLUSH 0\r
-#define Z_PARTIAL_FLUSH 1\r
-#define Z_SYNC_FLUSH 2\r
-#define Z_FULL_FLUSH 3\r
-#define Z_FINISH 4\r
-#define Z_BLOCK 5\r
-#define Z_TREES 6\r
-/* Allowed flush values; see deflate() and inflate() below for details */\r
-\r
-#define Z_OK 0\r
-#define Z_STREAM_END 1\r
-#define Z_NEED_DICT 2\r
-#define Z_ERRNO (-1)\r
-#define Z_STREAM_ERROR (-2)\r
-#define Z_DATA_ERROR (-3)\r
-#define Z_MEM_ERROR (-4)\r
-#define Z_BUF_ERROR (-5)\r
-#define Z_VERSION_ERROR (-6)\r
-/* Return codes for the compression/decompression functions. Negative values\r
- * are errors, positive values are used for special but normal events.\r
- */\r
-\r
-#define Z_NO_COMPRESSION 0\r
-#define Z_BEST_SPEED 1\r
-#define Z_BEST_COMPRESSION 9\r
-#define Z_DEFAULT_COMPRESSION (-1)\r
-/* compression levels */\r
-\r
-#define Z_FILTERED 1\r
-#define Z_HUFFMAN_ONLY 2\r
-#define Z_RLE 3\r
-#define Z_FIXED 4\r
-#define Z_DEFAULT_STRATEGY 0\r
-/* compression strategy; see deflateInit2() below for details */\r
-\r
-#define Z_BINARY 0\r
-#define Z_TEXT 1\r
-#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */\r
-#define Z_UNKNOWN 2\r
-/* Possible values of the data_type field (though see inflate()) */\r
-\r
-#define Z_DEFLATED 8\r
-/* The deflate compression method (the only one supported in this version) */\r
-\r
-#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */\r
-\r
-#define zlib_version zlibVersion()\r
-/* for compatibility with versions < 1.0.2 */\r
-\r
-\r
- /* basic functions */\r
-\r
-ZEXTERN const char * ZEXPORT zlibVersion OF((void));\r
-/* The application can compare zlibVersion and ZLIB_VERSION for consistency.\r
- If the first character differs, the library code actually used is not\r
- compatible with the zlib.h header file used by the application. This check\r
- is automatically made by deflateInit and inflateInit.\r
- */\r
-\r
-/*\r
-ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));\r
-\r
- Initializes the internal stream state for compression. The fields\r
- zalloc, zfree and opaque must be initialized before by the caller. If\r
- zalloc and zfree are set to Z_NULL, deflateInit updates them to use default\r
- allocation functions.\r
-\r
- The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:\r
- 1 gives best speed, 9 gives best compression, 0 gives no compression at all\r
- (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION\r
- requests a default compromise between speed and compression (currently\r
- equivalent to level 6).\r
-\r
- deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
- memory, Z_STREAM_ERROR if level is not a valid compression level, or\r
- Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible\r
- with the version assumed by the caller (ZLIB_VERSION). msg is set to null\r
- if there is no error message. deflateInit does not perform any compression:\r
- this will be done by deflate().\r
-*/\r
-\r
-\r
-ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));\r
-/*\r
- deflate compresses as much data as possible, and stops when the input\r
- buffer becomes empty or the output buffer becomes full. It may introduce\r
- some output latency (reading input without producing any output) except when\r
- forced to flush.\r
-\r
- The detailed semantics are as follows. deflate performs one or both of the\r
- following actions:\r
-\r
- - Compress more input starting at next_in and update next_in and avail_in\r
- accordingly. If not all input can be processed (because there is not\r
- enough room in the output buffer), next_in and avail_in are updated and\r
- processing will resume at this point for the next call of deflate().\r
-\r
- - Provide more output starting at next_out and update next_out and avail_out\r
- accordingly. This action is forced if the parameter flush is non zero.\r
- Forcing flush frequently degrades the compression ratio, so this parameter\r
- should be set only when necessary (in interactive applications). Some\r
- output may be provided even if flush is not set.\r
-\r
- Before the call of deflate(), the application should ensure that at least\r
- one of the actions is possible, by providing more input and/or consuming more\r
- output, and updating avail_in or avail_out accordingly; avail_out should\r
- never be zero before the call. The application can consume the compressed\r
- output when it wants, for example when the output buffer is full (avail_out\r
- == 0), or after each call of deflate(). If deflate returns Z_OK and with\r
- zero avail_out, it must be called again after making room in the output\r
- buffer because there might be more output pending.\r
-\r
- Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to\r
- decide how much data to accumulate before producing output, in order to\r
- maximize compression.\r
-\r
- If the parameter flush is set to Z_SYNC_FLUSH, all pending output is\r
- flushed to the output buffer and the output is aligned on a byte boundary, so\r
- that the decompressor can get all input data available so far. (In\r
- particular avail_in is zero after the call if enough output space has been\r
- provided before the call.) Flushing may degrade compression for some\r
- compression algorithms and so it should be used only when necessary. This\r
- completes the current deflate block and follows it with an empty stored block\r
- that is three bits plus filler bits to the next byte, followed by four bytes\r
- (00 00 ff ff).\r
-\r
- If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the\r
- output buffer, but the output is not aligned to a byte boundary. All of the\r
- input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.\r
- This completes the current deflate block and follows it with an empty fixed\r
- codes block that is 10 bits long. This assures that enough bytes are output\r
- in order for the decompressor to finish the block before the empty fixed code\r
- block.\r
-\r
- If flush is set to Z_BLOCK, a deflate block is completed and emitted, as\r
- for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to\r
- seven bits of the current block are held to be written as the next byte after\r
- the next deflate block is completed. In this case, the decompressor may not\r
- be provided enough bits at this point in order to complete decompression of\r
- the data provided so far to the compressor. It may need to wait for the next\r
- block to be emitted. This is for advanced applications that need to control\r
- the emission of deflate blocks.\r
-\r
- If flush is set to Z_FULL_FLUSH, all output is flushed as with\r
- Z_SYNC_FLUSH, and the compression state is reset so that decompression can\r
- restart from this point if previous compressed data has been damaged or if\r
- random access is desired. Using Z_FULL_FLUSH too often can seriously degrade\r
- compression.\r
-\r
- If deflate returns with avail_out == 0, this function must be called again\r
- with the same value of the flush parameter and more output space (updated\r
- avail_out), until the flush is complete (deflate returns with non-zero\r
- avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that\r
- avail_out is greater than six to avoid repeated flush markers due to\r
- avail_out == 0 on return.\r
-\r
- If the parameter flush is set to Z_FINISH, pending input is processed,\r
- pending output is flushed and deflate returns with Z_STREAM_END if there was\r
- enough output space; if deflate returns with Z_OK, this function must be\r
- called again with Z_FINISH and more output space (updated avail_out) but no\r
- more input data, until it returns with Z_STREAM_END or an error. After\r
- deflate has returned Z_STREAM_END, the only possible operations on the stream\r
- are deflateReset or deflateEnd.\r
-\r
- Z_FINISH can be used immediately after deflateInit if all the compression\r
- is to be done in a single step. In this case, avail_out must be at least the\r
- value returned by deflateBound (see below). If deflate does not return\r
- Z_STREAM_END, then it must be called again as described above.\r
-\r
- deflate() sets strm->adler to the adler32 checksum of all input read\r
- so far (that is, total_in bytes).\r
-\r
- deflate() may update strm->data_type if it can make a good guess about\r
- the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered\r
- binary. This field is only for information purposes and does not affect the\r
- compression algorithm in any manner.\r
-\r
- deflate() returns Z_OK if some progress has been made (more input\r
- processed or more output produced), Z_STREAM_END if all input has been\r
- consumed and all output has been produced (only when flush is set to\r
- Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example\r
- if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible\r
- (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not\r
- fatal, and deflate() can be called again with more input and more output\r
- space to continue compressing.\r
-*/\r
-\r
-\r
-ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));\r
-/*\r
- All dynamically allocated data structures for this stream are freed.\r
- This function discards any unprocessed input and does not flush any pending\r
- output.\r
-\r
- deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the\r
- stream state was inconsistent, Z_DATA_ERROR if the stream was freed\r
- prematurely (some input or output was discarded). In the error case, msg\r
- may be set but then points to a static string (which must not be\r
- deallocated).\r
-*/\r
-\r
-\r
-/*\r
-ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));\r
-\r
- Initializes the internal stream state for decompression. The fields\r
- next_in, avail_in, zalloc, zfree and opaque must be initialized before by\r
- the caller. If next_in is not Z_NULL and avail_in is large enough (the\r
- exact value depends on the compression method), inflateInit determines the\r
- compression method from the zlib header and allocates all data structures\r
- accordingly; otherwise the allocation will be deferred to the first call of\r
- inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to\r
- use default allocation functions.\r
-\r
- inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
- memory, Z_VERSION_ERROR if the zlib library version is incompatible with the\r
- version assumed by the caller, or Z_STREAM_ERROR if the parameters are\r
- invalid, such as a null pointer to the structure. msg is set to null if\r
- there is no error message. inflateInit does not perform any decompression\r
- apart from possibly reading the zlib header if present: actual decompression\r
- will be done by inflate(). (So next_in and avail_in may be modified, but\r
- next_out and avail_out are unused and unchanged.) The current implementation\r
- of inflateInit() does not process any header information -- that is deferred\r
- until inflate() is called.\r
-*/\r
-\r
-\r
-ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));\r
-/*\r
- inflate decompresses as much data as possible, and stops when the input\r
- buffer becomes empty or the output buffer becomes full. It may introduce\r
- some output latency (reading input without producing any output) except when\r
- forced to flush.\r
-\r
- The detailed semantics are as follows. inflate performs one or both of the\r
- following actions:\r
-\r
- - Decompress more input starting at next_in and update next_in and avail_in\r
- accordingly. If not all input can be processed (because there is not\r
- enough room in the output buffer), next_in is updated and processing will\r
- resume at this point for the next call of inflate().\r
-\r
- - Provide more output starting at next_out and update next_out and avail_out\r
- accordingly. inflate() provides as much output as possible, until there is\r
- no more input data or no more space in the output buffer (see below about\r
- the flush parameter).\r
-\r
- Before the call of inflate(), the application should ensure that at least\r
- one of the actions is possible, by providing more input and/or consuming more\r
- output, and updating the next_* and avail_* values accordingly. The\r
- application can consume the uncompressed output when it wants, for example\r
- when the output buffer is full (avail_out == 0), or after each call of\r
- inflate(). If inflate returns Z_OK and with zero avail_out, it must be\r
- called again after making room in the output buffer because there might be\r
- more output pending.\r
-\r
- The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,\r
- Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much\r
- output as possible to the output buffer. Z_BLOCK requests that inflate()\r
- stop if and when it gets to the next deflate block boundary. When decoding\r
- the zlib or gzip format, this will cause inflate() to return immediately\r
- after the header and before the first block. When doing a raw inflate,\r
- inflate() will go ahead and process the first block, and will return when it\r
- gets to the end of that block, or when it runs out of data.\r
-\r
- The Z_BLOCK option assists in appending to or combining deflate streams.\r
- Also to assist in this, on return inflate() will set strm->data_type to the\r
- number of unused bits in the last byte taken from strm->next_in, plus 64 if\r
- inflate() is currently decoding the last block in the deflate stream, plus\r
- 128 if inflate() returned immediately after decoding an end-of-block code or\r
- decoding the complete header up to just before the first byte of the deflate\r
- stream. The end-of-block will not be indicated until all of the uncompressed\r
- data from that block has been written to strm->next_out. The number of\r
- unused bits may in general be greater than seven, except when bit 7 of\r
- data_type is set, in which case the number of unused bits will be less than\r
- eight. data_type is set as noted here every time inflate() returns for all\r
- flush options, and so can be used to determine the amount of currently\r
- consumed input in bits.\r
-\r
- The Z_TREES option behaves as Z_BLOCK does, but it also returns when the\r
- end of each deflate block header is reached, before any actual data in that\r
- block is decoded. This allows the caller to determine the length of the\r
- deflate block header for later use in random access within a deflate block.\r
- 256 is added to the value of strm->data_type when inflate() returns\r
- immediately after reaching the end of the deflate block header.\r
-\r
- inflate() should normally be called until it returns Z_STREAM_END or an\r
- error. However if all decompression is to be performed in a single step (a\r
- single call of inflate), the parameter flush should be set to Z_FINISH. In\r
- this case all pending input is processed and all pending output is flushed;\r
- avail_out must be large enough to hold all the uncompressed data. (The size\r
- of the uncompressed data may have been saved by the compressor for this\r
- purpose.) The next operation on this stream must be inflateEnd to deallocate\r
- the decompression state. The use of Z_FINISH is never required, but can be\r
- used to inform inflate that a faster approach may be used for the single\r
- inflate() call.\r
-\r
- In this implementation, inflate() always flushes as much output as\r
- possible to the output buffer, and always uses the faster approach on the\r
- first call. So the only effect of the flush parameter in this implementation\r
- is on the return value of inflate(), as noted below, or when it returns early\r
- because Z_BLOCK or Z_TREES is used.\r
-\r
- If a preset dictionary is needed after this call (see inflateSetDictionary\r
- below), inflate sets strm->adler to the adler32 checksum of the dictionary\r
- chosen by the compressor and returns Z_NEED_DICT; otherwise it sets\r
- strm->adler to the adler32 checksum of all output produced so far (that is,\r
- total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described\r
- below. At the end of the stream, inflate() checks that its computed adler32\r
- checksum is equal to that saved by the compressor and returns Z_STREAM_END\r
- only if the checksum is correct.\r
-\r
- inflate() can decompress and check either zlib-wrapped or gzip-wrapped\r
- deflate data. The header type is detected automatically, if requested when\r
- initializing with inflateInit2(). Any information contained in the gzip\r
- header is not retained, so applications that need that information should\r
- instead use raw inflate, see inflateInit2() below, or inflateBack() and\r
- perform their own processing of the gzip header and trailer.\r
-\r
- inflate() returns Z_OK if some progress has been made (more input processed\r
- or more output produced), Z_STREAM_END if the end of the compressed data has\r
- been reached and all uncompressed output has been produced, Z_NEED_DICT if a\r
- preset dictionary is needed at this point, Z_DATA_ERROR if the input data was\r
- corrupted (input stream not conforming to the zlib format or incorrect check\r
- value), Z_STREAM_ERROR if the stream structure was inconsistent (for example\r
- next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory,\r
- Z_BUF_ERROR if no progress is possible or if there was not enough room in the\r
- output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and\r
- inflate() can be called again with more input and more output space to\r
- continue decompressing. If Z_DATA_ERROR is returned, the application may\r
- then call inflateSync() to look for a good compression block if a partial\r
- recovery of the data is desired.\r
-*/\r
-\r
-\r
-ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));\r
-/*\r
- All dynamically allocated data structures for this stream are freed.\r
- This function discards any unprocessed input and does not flush any pending\r
- output.\r
-\r
- inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state\r
- was inconsistent. In the error case, msg may be set but then points to a\r
- static string (which must not be deallocated).\r
-*/\r
-\r
-\r
- /* Advanced functions */\r
-\r
-/*\r
- The following functions are needed only in some special applications.\r
-*/\r
-\r
-/*\r
-ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,\r
- int level,\r
- int method,\r
- int windowBits,\r
- int memLevel,\r
- int strategy));\r
-\r
- This is another version of deflateInit with more compression options. The\r
- fields next_in, zalloc, zfree and opaque must be initialized before by the\r
- caller.\r
-\r
- The method parameter is the compression method. It must be Z_DEFLATED in\r
- this version of the library.\r
-\r
- The windowBits parameter is the base two logarithm of the window size\r
- (the size of the history buffer). It should be in the range 8..15 for this\r
- version of the library. Larger values of this parameter result in better\r
- compression at the expense of memory usage. The default value is 15 if\r
- deflateInit is used instead.\r
-\r
- windowBits can also be -8..-15 for raw deflate. In this case, -windowBits\r
- determines the window size. deflate() will then generate raw deflate data\r
- with no zlib header or trailer, and will not compute an adler32 check value.\r
-\r
- windowBits can also be greater than 15 for optional gzip encoding. Add\r
- 16 to windowBits to write a simple gzip header and trailer around the\r
- compressed data instead of a zlib wrapper. The gzip header will have no\r
- file name, no extra data, no comment, no modification time (set to zero), no\r
- header crc, and the operating system will be set to 255 (unknown). If a\r
- gzip stream is being written, strm->adler is a crc32 instead of an adler32.\r
-\r
- The memLevel parameter specifies how much memory should be allocated\r
- for the internal compression state. memLevel=1 uses minimum memory but is\r
- slow and reduces compression ratio; memLevel=9 uses maximum memory for\r
- optimal speed. The default value is 8. See zconf.h for total memory usage\r
- as a function of windowBits and memLevel.\r
-\r
- The strategy parameter is used to tune the compression algorithm. Use the\r
- value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a\r
- filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no\r
- string match), or Z_RLE to limit match distances to one (run-length\r
- encoding). Filtered data consists mostly of small values with a somewhat\r
- random distribution. In this case, the compression algorithm is tuned to\r
- compress them better. The effect of Z_FILTERED is to force more Huffman\r
- coding and less string matching; it is somewhat intermediate between\r
- Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as\r
- fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The\r
- strategy parameter only affects the compression ratio but not the\r
- correctness of the compressed output even if it is not set appropriately.\r
- Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler\r
- decoder for special applications.\r
-\r
- deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
- memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid\r
- method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is\r
- incompatible with the version assumed by the caller (ZLIB_VERSION). msg is\r
- set to null if there is no error message. deflateInit2 does not perform any\r
- compression: this will be done by deflate().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,\r
- const Bytef *dictionary,\r
- uInt dictLength));\r
-/*\r
- Initializes the compression dictionary from the given byte sequence\r
- without producing any compressed output. This function must be called\r
- immediately after deflateInit, deflateInit2 or deflateReset, before any call\r
- of deflate. The compressor and decompressor must use exactly the same\r
- dictionary (see inflateSetDictionary).\r
-\r
- The dictionary should consist of strings (byte sequences) that are likely\r
- to be encountered later in the data to be compressed, with the most commonly\r
- used strings preferably put towards the end of the dictionary. Using a\r
- dictionary is most useful when the data to be compressed is short and can be\r
- predicted with good accuracy; the data can then be compressed better than\r
- with the default empty dictionary.\r
-\r
- Depending on the size of the compression data structures selected by\r
- deflateInit or deflateInit2, a part of the dictionary may in effect be\r
- discarded, for example if the dictionary is larger than the window size\r
- provided in deflateInit or deflateInit2. Thus the strings most likely to be\r
- useful should be put at the end of the dictionary, not at the front. In\r
- addition, the current implementation of deflate will use at most the window\r
- size minus 262 bytes of the provided dictionary.\r
-\r
- Upon return of this function, strm->adler is set to the adler32 value\r
- of the dictionary; the decompressor may later use this value to determine\r
- which dictionary has been used by the compressor. (The adler32 value\r
- applies to the whole dictionary even if only a subset of the dictionary is\r
- actually used by the compressor.) If a raw deflate was requested, then the\r
- adler32 value is not computed and strm->adler is not set.\r
-\r
- deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a\r
- parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is\r
- inconsistent (for example if deflate has already been called for this stream\r
- or if the compression method is bsort). deflateSetDictionary does not\r
- perform any compression: this will be done by deflate().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,\r
- z_streamp source));\r
-/*\r
- Sets the destination stream as a complete copy of the source stream.\r
-\r
- This function can be useful when several compression strategies will be\r
- tried, for example when there are several ways of pre-processing the input\r
- data with a filter. The streams that will be discarded should then be freed\r
- by calling deflateEnd. Note that deflateCopy duplicates the internal\r
- compression state which can be quite large, so this strategy is slow and can\r
- consume lots of memory.\r
-\r
- deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not\r
- enough memory, Z_STREAM_ERROR if the source stream state was inconsistent\r
- (such as zalloc being Z_NULL). msg is left unchanged in both source and\r
- destination.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));\r
-/*\r
- This function is equivalent to deflateEnd followed by deflateInit,\r
- but does not free and reallocate all the internal compression state. The\r
- stream will keep the same compression level and any other attributes that\r
- may have been set by deflateInit2.\r
-\r
- deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent (such as zalloc or state being Z_NULL).\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,\r
- int level,\r
- int strategy));\r
-/*\r
- Dynamically update the compression level and compression strategy. The\r
- interpretation of level and strategy is as in deflateInit2. This can be\r
- used to switch between compression and straight copy of the input data, or\r
- to switch to a different kind of input data requiring a different strategy.\r
- If the compression level is changed, the input available so far is\r
- compressed with the old level (and may be flushed); the new level will take\r
- effect only at the next call of deflate().\r
-\r
- Before the call of deflateParams, the stream state must be set as for\r
- a call of deflate(), since the currently available input may have to be\r
- compressed and flushed. In particular, strm->avail_out must be non-zero.\r
-\r
- deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source\r
- stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if\r
- strm->avail_out was zero.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,\r
- int good_length,\r
- int max_lazy,\r
- int nice_length,\r
- int max_chain));\r
-/*\r
- Fine tune deflate's internal compression parameters. This should only be\r
- used by someone who understands the algorithm used by zlib's deflate for\r
- searching for the best matching string, and even then only by the most\r
- fanatic optimizer trying to squeeze out the last compressed bit for their\r
- specific input data. Read the deflate.c source code for the meaning of the\r
- max_lazy, good_length, nice_length, and max_chain parameters.\r
-\r
- deflateTune() can be called after deflateInit() or deflateInit2(), and\r
- returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.\r
- */\r
-\r
-ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,\r
- uLong sourceLen));\r
-/*\r
- deflateBound() returns an upper bound on the compressed size after\r
- deflation of sourceLen bytes. It must be called after deflateInit() or\r
- deflateInit2(), and after deflateSetHeader(), if used. This would be used\r
- to allocate an output buffer for deflation in a single pass, and so would be\r
- called before deflate().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,\r
- int bits,\r
- int value));\r
-/*\r
- deflatePrime() inserts bits in the deflate output stream. The intent\r
- is that this function is used to start off the deflate output with the bits\r
- leftover from a previous deflate stream when appending to it. As such, this\r
- function can only be used for raw deflate, and must be used before the first\r
- deflate() call after a deflateInit2() or deflateReset(). bits must be less\r
- than or equal to 16, and that many of the least significant bits of value\r
- will be inserted in the output.\r
-\r
- deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,\r
- gz_headerp head));\r
-/*\r
- deflateSetHeader() provides gzip header information for when a gzip\r
- stream is requested by deflateInit2(). deflateSetHeader() may be called\r
- after deflateInit2() or deflateReset() and before the first call of\r
- deflate(). The text, time, os, extra field, name, and comment information\r
- in the provided gz_header structure are written to the gzip header (xflag is\r
- ignored -- the extra flags are set according to the compression level). The\r
- caller must assure that, if not Z_NULL, name and comment are terminated with\r
- a zero byte, and that if extra is not Z_NULL, that extra_len bytes are\r
- available there. If hcrc is true, a gzip header crc is included. Note that\r
- the current versions of the command-line version of gzip (up through version\r
- 1.3.x) do not support header crc's, and will report that it is a "multi-part\r
- gzip file" and give up.\r
-\r
- If deflateSetHeader is not used, the default gzip header has text false,\r
- the time set to zero, and os set to 255, with no extra, name, or comment\r
- fields. The gzip header is returned to the default state by deflateReset().\r
-\r
- deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent.\r
-*/\r
-\r
-/*\r
-ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,\r
- int windowBits));\r
-\r
- This is another version of inflateInit with an extra parameter. The\r
- fields next_in, avail_in, zalloc, zfree and opaque must be initialized\r
- before by the caller.\r
-\r
- The windowBits parameter is the base two logarithm of the maximum window\r
- size (the size of the history buffer). It should be in the range 8..15 for\r
- this version of the library. The default value is 15 if inflateInit is used\r
- instead. windowBits must be greater than or equal to the windowBits value\r
- provided to deflateInit2() while compressing, or it must be equal to 15 if\r
- deflateInit2() was not used. If a compressed stream with a larger window\r
- size is given as input, inflate() will return with the error code\r
- Z_DATA_ERROR instead of trying to allocate a larger window.\r
-\r
- windowBits can also be zero to request that inflate use the window size in\r
- the zlib header of the compressed stream.\r
-\r
- windowBits can also be -8..-15 for raw inflate. In this case, -windowBits\r
- determines the window size. inflate() will then process raw deflate data,\r
- not looking for a zlib or gzip header, not generating a check value, and not\r
- looking for any check values for comparison at the end of the stream. This\r
- is for use with other formats that use the deflate compressed data format\r
- such as zip. Those formats provide their own check values. If a custom\r
- format is developed using the raw deflate format for compressed data, it is\r
- recommended that a check value such as an adler32 or a crc32 be applied to\r
- the uncompressed data as is done in the zlib, gzip, and zip formats. For\r
- most applications, the zlib format should be used as is. Note that comments\r
- above on the use in deflateInit2() applies to the magnitude of windowBits.\r
-\r
- windowBits can also be greater than 15 for optional gzip decoding. Add\r
- 32 to windowBits to enable zlib and gzip decoding with automatic header\r
- detection, or add 16 to decode only the gzip format (the zlib format will\r
- return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a\r
- crc32 instead of an adler32.\r
-\r
- inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
- memory, Z_VERSION_ERROR if the zlib library version is incompatible with the\r
- version assumed by the caller, or Z_STREAM_ERROR if the parameters are\r
- invalid, such as a null pointer to the structure. msg is set to null if\r
- there is no error message. inflateInit2 does not perform any decompression\r
- apart from possibly reading the zlib header if present: actual decompression\r
- will be done by inflate(). (So next_in and avail_in may be modified, but\r
- next_out and avail_out are unused and unchanged.) The current implementation\r
- of inflateInit2() does not process any header information -- that is\r
- deferred until inflate() is called.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,\r
- const Bytef *dictionary,\r
- uInt dictLength));\r
-/*\r
- Initializes the decompression dictionary from the given uncompressed byte\r
- sequence. This function must be called immediately after a call of inflate,\r
- if that call returned Z_NEED_DICT. The dictionary chosen by the compressor\r
- can be determined from the adler32 value returned by that call of inflate.\r
- The compressor and decompressor must use exactly the same dictionary (see\r
- deflateSetDictionary). For raw inflate, this function can be called\r
- immediately after inflateInit2() or inflateReset() and before any call of\r
- inflate() to set the dictionary. The application must insure that the\r
- dictionary that was used for compression is provided.\r
-\r
- inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a\r
- parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is\r
- inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the\r
- expected one (incorrect adler32 value). inflateSetDictionary does not\r
- perform any decompression: this will be done by subsequent calls of\r
- inflate().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));\r
-/*\r
- Skips invalid compressed data until a full flush point (see above the\r
- description of deflate with Z_FULL_FLUSH) can be found, or until all\r
- available input is skipped. No output is provided.\r
-\r
- inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR\r
- if no more input was provided, Z_DATA_ERROR if no flush point has been\r
- found, or Z_STREAM_ERROR if the stream structure was inconsistent. In the\r
- success case, the application may save the current current value of total_in\r
- which indicates where valid compressed data was found. In the error case,\r
- the application may repeatedly call inflateSync, providing more input each\r
- time, until success or end of the input data.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,\r
- z_streamp source));\r
-/*\r
- Sets the destination stream as a complete copy of the source stream.\r
-\r
- This function can be useful when randomly accessing a large stream. The\r
- first pass through the stream can periodically record the inflate state,\r
- allowing restarting inflate at those points when randomly accessing the\r
- stream.\r
-\r
- inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not\r
- enough memory, Z_STREAM_ERROR if the source stream state was inconsistent\r
- (such as zalloc being Z_NULL). msg is left unchanged in both source and\r
- destination.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));\r
-/*\r
- This function is equivalent to inflateEnd followed by inflateInit,\r
- but does not free and reallocate all the internal decompression state. The\r
- stream will keep attributes that may have been set by inflateInit2.\r
-\r
- inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent (such as zalloc or state being Z_NULL).\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,\r
- int windowBits));\r
-/*\r
- This function is the same as inflateReset, but it also permits changing\r
- the wrap and window size requests. The windowBits parameter is interpreted\r
- the same as it is for inflateInit2.\r
-\r
- inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent (such as zalloc or state being Z_NULL), or if\r
- the windowBits parameter is invalid.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,\r
- int bits,\r
- int value));\r
-/*\r
- This function inserts bits in the inflate input stream. The intent is\r
- that this function is used to start inflating at a bit position in the\r
- middle of a byte. The provided bits will be used before any bytes are used\r
- from next_in. This function should only be used with raw inflate, and\r
- should be used before the first inflate() call after inflateInit2() or\r
- inflateReset(). bits must be less than or equal to 16, and that many of the\r
- least significant bits of value will be inserted in the input.\r
-\r
- If bits is negative, then the input stream bit buffer is emptied. Then\r
- inflatePrime() can be called again to put bits in the buffer. This is used\r
- to clear out bits leftover after feeding inflate a block description prior\r
- to feeding inflate codes.\r
-\r
- inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent.\r
-*/\r
-\r
-ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));\r
-/*\r
- This function returns two values, one in the lower 16 bits of the return\r
- value, and the other in the remaining upper bits, obtained by shifting the\r
- return value down 16 bits. If the upper value is -1 and the lower value is\r
- zero, then inflate() is currently decoding information outside of a block.\r
- If the upper value is -1 and the lower value is non-zero, then inflate is in\r
- the middle of a stored block, with the lower value equaling the number of\r
- bytes from the input remaining to copy. If the upper value is not -1, then\r
- it is the number of bits back from the current bit position in the input of\r
- the code (literal or length/distance pair) currently being processed. In\r
- that case the lower value is the number of bytes already emitted for that\r
- code.\r
-\r
- A code is being processed if inflate is waiting for more input to complete\r
- decoding of the code, or if it has completed decoding but is waiting for\r
- more output space to write the literal or match data.\r
-\r
- inflateMark() is used to mark locations in the input data for random\r
- access, which may be at bit positions, and to note those cases where the\r
- output of a code may span boundaries of random access blocks. The current\r
- location in the input stream can be determined from avail_in and data_type\r
- as noted in the description for the Z_BLOCK flush parameter for inflate.\r
-\r
- inflateMark returns the value noted above or -1 << 16 if the provided\r
- source stream state was inconsistent.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,\r
- gz_headerp head));\r
-/*\r
- inflateGetHeader() requests that gzip header information be stored in the\r
- provided gz_header structure. inflateGetHeader() may be called after\r
- inflateInit2() or inflateReset(), and before the first call of inflate().\r
- As inflate() processes the gzip stream, head->done is zero until the header\r
- is completed, at which time head->done is set to one. If a zlib stream is\r
- being decoded, then head->done is set to -1 to indicate that there will be\r
- no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be\r
- used to force inflate() to return immediately after header processing is\r
- complete and before any actual data is decompressed.\r
-\r
- The text, time, xflags, and os fields are filled in with the gzip header\r
- contents. hcrc is set to true if there is a header CRC. (The header CRC\r
- was valid if done is set to one.) If extra is not Z_NULL, then extra_max\r
- contains the maximum number of bytes to write to extra. Once done is true,\r
- extra_len contains the actual extra field length, and extra contains the\r
- extra field, or that field truncated if extra_max is less than extra_len.\r
- If name is not Z_NULL, then up to name_max characters are written there,\r
- terminated with a zero unless the length is greater than name_max. If\r
- comment is not Z_NULL, then up to comm_max characters are written there,\r
- terminated with a zero unless the length is greater than comm_max. When any\r
- of extra, name, or comment are not Z_NULL and the respective field is not\r
- present in the header, then that field is set to Z_NULL to signal its\r
- absence. This allows the use of deflateSetHeader() with the returned\r
- structure to duplicate the header. However if those fields are set to\r
- allocated memory, then the application will need to save those pointers\r
- elsewhere so that they can be eventually freed.\r
-\r
- If inflateGetHeader is not used, then the header information is simply\r
- discarded. The header is always checked for validity, including the header\r
- CRC if present. inflateReset() will reset the process to discard the header\r
- information. The application would need to call inflateGetHeader() again to\r
- retrieve the header from the next gzip stream.\r
-\r
- inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source\r
- stream state was inconsistent.\r
-*/\r
-\r
-/*\r
-ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,\r
- unsigned char FAR *window));\r
-\r
- Initialize the internal stream state for decompression using inflateBack()\r
- calls. The fields zalloc, zfree and opaque in strm must be initialized\r
- before the call. If zalloc and zfree are Z_NULL, then the default library-\r
- derived memory allocation routines are used. windowBits is the base two\r
- logarithm of the window size, in the range 8..15. window is a caller\r
- supplied buffer of that size. Except for special applications where it is\r
- assured that deflate was used with small window sizes, windowBits must be 15\r
- and a 32K byte window must be supplied to be able to decompress general\r
- deflate streams.\r
-\r
- See inflateBack() for the usage of these routines.\r
-\r
- inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of\r
- the paramaters are invalid, Z_MEM_ERROR if the internal state could not be\r
- allocated, or Z_VERSION_ERROR if the version of the library does not match\r
- the version of the header file.\r
-*/\r
-\r
-typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));\r
-typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));\r
-\r
-ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,\r
- in_func in, void FAR *in_desc,\r
- out_func out, void FAR *out_desc));\r
-/*\r
- inflateBack() does a raw inflate with a single call using a call-back\r
- interface for input and output. This is more efficient than inflate() for\r
- file i/o applications in that it avoids copying between the output and the\r
- sliding window by simply making the window itself the output buffer. This\r
- function trusts the application to not change the output buffer passed by\r
- the output function, at least until inflateBack() returns.\r
-\r
- inflateBackInit() must be called first to allocate the internal state\r
- and to initialize the state with the user-provided window buffer.\r
- inflateBack() may then be used multiple times to inflate a complete, raw\r
- deflate stream with each call. inflateBackEnd() is then called to free the\r
- allocated state.\r
-\r
- A raw deflate stream is one with no zlib or gzip header or trailer.\r
- This routine would normally be used in a utility that reads zip or gzip\r
- files and writes out uncompressed files. The utility would decode the\r
- header and process the trailer on its own, hence this routine expects only\r
- the raw deflate stream to decompress. This is different from the normal\r
- behavior of inflate(), which expects either a zlib or gzip header and\r
- trailer around the deflate stream.\r
-\r
- inflateBack() uses two subroutines supplied by the caller that are then\r
- called by inflateBack() for input and output. inflateBack() calls those\r
- routines until it reads a complete deflate stream and writes out all of the\r
- uncompressed data, or until it encounters an error. The function's\r
- parameters and return types are defined above in the in_func and out_func\r
- typedefs. inflateBack() will call in(in_desc, &buf) which should return the\r
- number of bytes of provided input, and a pointer to that input in buf. If\r
- there is no input available, in() must return zero--buf is ignored in that\r
- case--and inflateBack() will return a buffer error. inflateBack() will call\r
- out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()\r
- should return zero on success, or non-zero on failure. If out() returns\r
- non-zero, inflateBack() will return with an error. Neither in() nor out()\r
- are permitted to change the contents of the window provided to\r
- inflateBackInit(), which is also the buffer that out() uses to write from.\r
- The length written by out() will be at most the window size. Any non-zero\r
- amount of input may be provided by in().\r
-\r
- For convenience, inflateBack() can be provided input on the first call by\r
- setting strm->next_in and strm->avail_in. If that input is exhausted, then\r
- in() will be called. Therefore strm->next_in must be initialized before\r
- calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called\r
- immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in\r
- must also be initialized, and then if strm->avail_in is not zero, input will\r
- initially be taken from strm->next_in[0 .. strm->avail_in - 1].\r
-\r
- The in_desc and out_desc parameters of inflateBack() is passed as the\r
- first parameter of in() and out() respectively when they are called. These\r
- descriptors can be optionally used to pass any information that the caller-\r
- supplied in() and out() functions need to do their job.\r
-\r
- On return, inflateBack() will set strm->next_in and strm->avail_in to\r
- pass back any unused input that was provided by the last in() call. The\r
- return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR\r
- if in() or out() returned an error, Z_DATA_ERROR if there was a format error\r
- in the deflate stream (in which case strm->msg is set to indicate the nature\r
- of the error), or Z_STREAM_ERROR if the stream was not properly initialized.\r
- In the case of Z_BUF_ERROR, an input or output error can be distinguished\r
- using strm->next_in which will be Z_NULL only if in() returned an error. If\r
- strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning\r
- non-zero. (in() will always be called before out(), so strm->next_in is\r
- assured to be defined if out() returns non-zero.) Note that inflateBack()\r
- cannot return Z_OK.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));\r
-/*\r
- All memory allocated by inflateBackInit() is freed.\r
-\r
- inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream\r
- state was inconsistent.\r
-*/\r
-\r
-ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));\r
-/* Return flags indicating compile-time options.\r
-\r
- Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:\r
- 1.0: size of uInt\r
- 3.2: size of uLong\r
- 5.4: size of voidpf (pointer)\r
- 7.6: size of z_off_t\r
-\r
- Compiler, assembler, and debug options:\r
- 8: DEBUG\r
- 9: ASMV or ASMINF -- use ASM code\r
- 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention\r
- 11: 0 (reserved)\r
-\r
- One-time table building (smaller code, but not thread-safe if true):\r
- 12: BUILDFIXED -- build static block decoding tables when needed\r
- 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed\r
- 14,15: 0 (reserved)\r
-\r
- Library content (indicates missing functionality):\r
- 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking\r
- deflate code when not needed)\r
- 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect\r
- and decode gzip streams (to avoid linking crc code)\r
- 18-19: 0 (reserved)\r
-\r
- Operation variations (changes in library functionality):\r
- 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate\r
- 21: FASTEST -- deflate algorithm with only one, lowest compression level\r
- 22,23: 0 (reserved)\r
-\r
- The sprintf variant used by gzprintf (zero is best):\r
- 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format\r
- 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!\r
- 26: 0 = returns value, 1 = void -- 1 means inferred string length returned\r
-\r
- Remainder:\r
- 27-31: 0 (reserved)\r
- */\r
-\r
-\r
- /* utility functions */\r
-\r
-/*\r
- The following utility functions are implemented on top of the basic\r
- stream-oriented functions. To simplify the interface, some default options\r
- are assumed (compression level and memory usage, standard memory allocation\r
- functions). The source code of these utility functions can be modified if\r
- you need special options.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,\r
- const Bytef *source, uLong sourceLen));\r
-/*\r
- Compresses the source buffer into the destination buffer. sourceLen is\r
- the byte length of the source buffer. Upon entry, destLen is the total size\r
- of the destination buffer, which must be at least the value returned by\r
- compressBound(sourceLen). Upon exit, destLen is the actual size of the\r
- compressed buffer.\r
-\r
- compress returns Z_OK if success, Z_MEM_ERROR if there was not\r
- enough memory, Z_BUF_ERROR if there was not enough room in the output\r
- buffer.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,\r
- const Bytef *source, uLong sourceLen,\r
- int level));\r
-/*\r
- Compresses the source buffer into the destination buffer. The level\r
- parameter has the same meaning as in deflateInit. sourceLen is the byte\r
- length of the source buffer. Upon entry, destLen is the total size of the\r
- destination buffer, which must be at least the value returned by\r
- compressBound(sourceLen). Upon exit, destLen is the actual size of the\r
- compressed buffer.\r
-\r
- compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough\r
- memory, Z_BUF_ERROR if there was not enough room in the output buffer,\r
- Z_STREAM_ERROR if the level parameter is invalid.\r
-*/\r
-\r
-ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));\r
-/*\r
- compressBound() returns an upper bound on the compressed size after\r
- compress() or compress2() on sourceLen bytes. It would be used before a\r
- compress() or compress2() call to allocate the destination buffer.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,\r
- const Bytef *source, uLong sourceLen));\r
-/*\r
- Decompresses the source buffer into the destination buffer. sourceLen is\r
- the byte length of the source buffer. Upon entry, destLen is the total size\r
- of the destination buffer, which must be large enough to hold the entire\r
- uncompressed data. (The size of the uncompressed data must have been saved\r
- previously by the compressor and transmitted to the decompressor by some\r
- mechanism outside the scope of this compression library.) Upon exit, destLen\r
- is the actual size of the uncompressed buffer.\r
-\r
- uncompress returns Z_OK if success, Z_MEM_ERROR if there was not\r
- enough memory, Z_BUF_ERROR if there was not enough room in the output\r
- buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.\r
-*/\r
-\r
-\r
- /* gzip file access functions */\r
-\r
-/*\r
- This library supports reading and writing files in gzip (.gz) format with\r
- an interface similar to that of stdio, using the functions that start with\r
- "gz". The gzip format is different from the zlib format. gzip is a gzip\r
- wrapper, documented in RFC 1952, wrapped around a deflate stream.\r
-*/\r
-\r
-typedef voidp gzFile; /* opaque gzip file descriptor */\r
-\r
-/*\r
-ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));\r
-\r
- Opens a gzip (.gz) file for reading or writing. The mode parameter is as\r
- in fopen ("rb" or "wb") but can also include a compression level ("wb9") or\r
- a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only\r
- compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'\r
- for fixed code compression as in "wb9F". (See the description of\r
- deflateInit2 for more information about the strategy parameter.) Also "a"\r
- can be used instead of "w" to request that the gzip stream that will be\r
- written be appended to the file. "+" will result in an error, since reading\r
- and writing to the same gzip file is not supported.\r
-\r
- gzopen can be used to read a file which is not in gzip format; in this\r
- case gzread will directly read from the file without decompression.\r
-\r
- gzopen returns NULL if the file could not be opened, if there was\r
- insufficient memory to allocate the gzFile state, or if an invalid mode was\r
- specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).\r
- errno can be checked to determine if the reason gzopen failed was that the\r
- file could not be opened.\r
-*/\r
-\r
-ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));\r
-/*\r
- gzdopen associates a gzFile with the file descriptor fd. File descriptors\r
- are obtained from calls like open, dup, creat, pipe or fileno (if the file\r
- has been previously opened with fopen). The mode parameter is as in gzopen.\r
-\r
- The next call of gzclose on the returned gzFile will also close the file\r
- descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor\r
- fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,\r
- mode);. The duplicated descriptor should be saved to avoid a leak, since\r
- gzdopen does not close fd if it fails.\r
-\r
- gzdopen returns NULL if there was insufficient memory to allocate the\r
- gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not\r
- provided, or '+' was provided), or if fd is -1. The file descriptor is not\r
- used until the next gz* read, write, seek, or close operation, so gzdopen\r
- will not detect if fd is invalid (unless fd is -1).\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));\r
-/*\r
- Set the internal buffer size used by this library's functions. The\r
- default buffer size is 8192 bytes. This function must be called after\r
- gzopen() or gzdopen(), and before any other calls that read or write the\r
- file. The buffer memory allocation is always deferred to the first read or\r
- write. Two buffers are allocated, either both of the specified size when\r
- writing, or one of the specified size and the other twice that size when\r
- reading. A larger buffer size of, for example, 64K or 128K bytes will\r
- noticeably increase the speed of decompression (reading).\r
-\r
- The new buffer size also affects the maximum length for gzprintf().\r
-\r
- gzbuffer() returns 0 on success, or -1 on failure, such as being called\r
- too late.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));\r
-/*\r
- Dynamically update the compression level or strategy. See the description\r
- of deflateInit2 for the meaning of these parameters.\r
-\r
- gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not\r
- opened for writing.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));\r
-/*\r
- Reads the given number of uncompressed bytes from the compressed file. If\r
- the input file was not in gzip format, gzread copies the given number of\r
- bytes into the buffer.\r
-\r
- After reaching the end of a gzip stream in the input, gzread will continue\r
- to read, looking for another gzip stream, or failing that, reading the rest\r
- of the input file directly without decompression. The entire input file\r
- will be read if gzread is called until it returns less than the requested\r
- len.\r
-\r
- gzread returns the number of uncompressed bytes actually read, less than\r
- len for end of file, or -1 for error.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzwrite OF((gzFile file,\r
- voidpc buf, unsigned len));\r
-/*\r
- Writes the given number of uncompressed bytes into the compressed file.\r
- gzwrite returns the number of uncompressed bytes written or 0 in case of\r
- error.\r
-*/\r
-\r
-ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));\r
-/*\r
- Converts, formats, and writes the arguments to the compressed file under\r
- control of the format string, as in fprintf. gzprintf returns the number of\r
- uncompressed bytes actually written, or 0 in case of error. The number of\r
- uncompressed bytes written is limited to 8191, or one less than the buffer\r
- size given to gzbuffer(). The caller should assure that this limit is not\r
- exceeded. If it is exceeded, then gzprintf() will return an error (0) with\r
- nothing written. In this case, there may also be a buffer overflow with\r
- unpredictable consequences, which is possible only if zlib was compiled with\r
- the insecure functions sprintf() or vsprintf() because the secure snprintf()\r
- or vsnprintf() functions were not available. This can be determined using\r
- zlibCompileFlags().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));\r
-/*\r
- Writes the given null-terminated string to the compressed file, excluding\r
- the terminating null character.\r
-\r
- gzputs returns the number of characters written, or -1 in case of error.\r
-*/\r
-\r
-ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));\r
-/*\r
- Reads bytes from the compressed file until len-1 characters are read, or a\r
- newline character is read and transferred to buf, or an end-of-file\r
- condition is encountered. If any characters are read or if len == 1, the\r
- string is terminated with a null character. If no characters are read due\r
- to an end-of-file or len < 1, then the buffer is left untouched.\r
-\r
- gzgets returns buf which is a null-terminated string, or it returns NULL\r
- for end-of-file or in case of error. If there was an error, the contents at\r
- buf are indeterminate.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));\r
-/*\r
- Writes c, converted to an unsigned char, into the compressed file. gzputc\r
- returns the value that was written, or -1 in case of error.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzgetc OF((gzFile file));\r
-/*\r
- Reads one byte from the compressed file. gzgetc returns this byte or -1\r
- in case of end of file or error.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));\r
-/*\r
- Push one character back onto the stream to be read as the first character\r
- on the next read. At least one character of push-back is allowed.\r
- gzungetc() returns the character pushed, or -1 on failure. gzungetc() will\r
- fail if c is -1, and may fail if a character has been pushed but not read\r
- yet. If gzungetc is used immediately after gzopen or gzdopen, at least the\r
- output buffer size of pushed characters is allowed. (See gzbuffer above.)\r
- The pushed character will be discarded if the stream is repositioned with\r
- gzseek() or gzrewind().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));\r
-/*\r
- Flushes all pending output into the compressed file. The parameter flush\r
- is as in the deflate() function. The return value is the zlib error number\r
- (see function gzerror below). gzflush is only permitted when writing.\r
-\r
- If the flush parameter is Z_FINISH, the remaining data is written and the\r
- gzip stream is completed in the output. If gzwrite() is called again, a new\r
- gzip stream will be started in the output. gzread() is able to read such\r
- concatented gzip streams.\r
-\r
- gzflush should be called only when strictly necessary because it will\r
- degrade compression if called too often.\r
-*/\r
-\r
-/*\r
-ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,\r
- z_off_t offset, int whence));\r
-\r
- Sets the starting position for the next gzread or gzwrite on the given\r
- compressed file. The offset represents a number of bytes in the\r
- uncompressed data stream. The whence parameter is defined as in lseek(2);\r
- the value SEEK_END is not supported.\r
-\r
- If the file is opened for reading, this function is emulated but can be\r
- extremely slow. If the file is opened for writing, only forward seeks are\r
- supported; gzseek then compresses a sequence of zeroes up to the new\r
- starting position.\r
-\r
- gzseek returns the resulting offset location as measured in bytes from\r
- the beginning of the uncompressed stream, or -1 in case of error, in\r
- particular if the file is opened for writing and the new starting position\r
- would be before the current position.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzrewind OF((gzFile file));\r
-/*\r
- Rewinds the given file. This function is supported only for reading.\r
-\r
- gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)\r
-*/\r
-\r
-/*\r
-ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));\r
-\r
- Returns the starting position for the next gzread or gzwrite on the given\r
- compressed file. This position represents a number of bytes in the\r
- uncompressed data stream, and is zero when starting, even if appending or\r
- reading a gzip stream from the middle of a file using gzdopen().\r
-\r
- gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)\r
-*/\r
-\r
-/*\r
-ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));\r
-\r
- Returns the current offset in the file being read or written. This offset\r
- includes the count of bytes that precede the gzip stream, for example when\r
- appending or when using gzdopen() for reading. When reading, the offset\r
- does not include as yet unused buffered input. This information can be used\r
- for a progress indicator. On error, gzoffset() returns -1.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzeof OF((gzFile file));\r
-/*\r
- Returns true (1) if the end-of-file indicator has been set while reading,\r
- false (0) otherwise. Note that the end-of-file indicator is set only if the\r
- read tried to go past the end of the input, but came up short. Therefore,\r
- just like feof(), gzeof() may return false even if there is no more data to\r
- read, in the event that the last read request was for the exact number of\r
- bytes remaining in the input file. This will happen if the input file size\r
- is an exact multiple of the buffer size.\r
-\r
- If gzeof() returns true, then the read functions will return no more data,\r
- unless the end-of-file indicator is reset by gzclearerr() and the input file\r
- has grown since the previous end of file was detected.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzdirect OF((gzFile file));\r
-/*\r
- Returns true (1) if file is being copied directly while reading, or false\r
- (0) if file is a gzip stream being decompressed. This state can change from\r
- false to true while reading the input file if the end of a gzip stream is\r
- reached, but is followed by data that is not another gzip stream.\r
-\r
- If the input file is empty, gzdirect() will return true, since the input\r
- does not contain a gzip stream.\r
-\r
- If gzdirect() is used immediately after gzopen() or gzdopen() it will\r
- cause buffers to be allocated to allow reading the file to determine if it\r
- is a gzip file. Therefore if gzbuffer() is used, it should be called before\r
- gzdirect().\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzclose OF((gzFile file));\r
-/*\r
- Flushes all pending output if necessary, closes the compressed file and\r
- deallocates the (de)compression state. Note that once file is closed, you\r
- cannot call gzerror with file, since its structures have been deallocated.\r
- gzclose must not be called more than once on the same file, just as free\r
- must not be called more than once on the same allocation.\r
-\r
- gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a\r
- file operation error, or Z_OK on success.\r
-*/\r
-\r
-ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));\r
-ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));\r
-/*\r
- Same as gzclose(), but gzclose_r() is only for use when reading, and\r
- gzclose_w() is only for use when writing or appending. The advantage to\r
- using these instead of gzclose() is that they avoid linking in zlib\r
- compression or decompression code that is not used when only reading or only\r
- writing respectively. If gzclose() is used, then both compression and\r
- decompression code will be included the application when linking to a static\r
- zlib library.\r
-*/\r
-\r
-ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));\r
-/*\r
- Returns the error message for the last error which occurred on the given\r
- compressed file. errnum is set to zlib error number. If an error occurred\r
- in the file system and not in the compression library, errnum is set to\r
- Z_ERRNO and the application may consult errno to get the exact error code.\r
-\r
- The application must not modify the returned string. Future calls to\r
- this function may invalidate the previously returned string. If file is\r
- closed, then the string previously returned by gzerror will no longer be\r
- available.\r
-\r
- gzerror() should be used to distinguish errors from end-of-file for those\r
- functions above that do not distinguish those cases in their return values.\r
-*/\r
-\r
-ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));\r
-/*\r
- Clears the error and end-of-file flags for file. This is analogous to the\r
- clearerr() function in stdio. This is useful for continuing to read a gzip\r
- file that is being written concurrently.\r
-*/\r
-\r
-\r
- /* checksum functions */\r
-\r
-/*\r
- These functions are not related to compression but are exported\r
- anyway because they might be useful in applications using the compression\r
- library.\r
-*/\r
-\r
-ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));\r
-/*\r
- Update a running Adler-32 checksum with the bytes buf[0..len-1] and\r
- return the updated checksum. If buf is Z_NULL, this function returns the\r
- required initial value for the checksum.\r
-\r
- An Adler-32 checksum is almost as reliable as a CRC32 but can be computed\r
- much faster.\r
-\r
- Usage example:\r
-\r
- uLong adler = adler32(0L, Z_NULL, 0);\r
-\r
- while (read_buffer(buffer, length) != EOF) {\r
- adler = adler32(adler, buffer, length);\r
- }\r
- if (adler != original_adler) error();\r
-*/\r
-\r
-/*\r
-ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,\r
- z_off_t len2));\r
-\r
- Combine two Adler-32 checksums into one. For two sequences of bytes, seq1\r
- and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for\r
- each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of\r
- seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.\r
-*/\r
-\r
-ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));\r
-/*\r
- Update a running CRC-32 with the bytes buf[0..len-1] and return the\r
- updated CRC-32. If buf is Z_NULL, this function returns the required\r
- initial value for the for the crc. Pre- and post-conditioning (one's\r
- complement) is performed within this function so it shouldn't be done by the\r
- application.\r
-\r
- Usage example:\r
-\r
- uLong crc = crc32(0L, Z_NULL, 0);\r
-\r
- while (read_buffer(buffer, length) != EOF) {\r
- crc = crc32(crc, buffer, length);\r
- }\r
- if (crc != original_crc) error();\r
-*/\r
-\r
-/*\r
-ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));\r
-\r
- Combine two CRC-32 check values into one. For two sequences of bytes,\r
- seq1 and seq2 with lengths len1 and len2, CRC-32 check values were\r
- calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32\r
- check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and\r
- len2.\r
-*/\r
-\r
-\r
- /* various hacks, don't look :) */\r
-\r
-/* deflateInit and inflateInit are macros to allow checking the zlib version\r
- * and the compiler's view of z_stream:\r
- */\r
-ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,\r
- const char *version, int stream_size));\r
-ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,\r
- const char *version, int stream_size));\r
-ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,\r
- int windowBits, int memLevel,\r
- int strategy, const char *version,\r
- int stream_size));\r
-ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,\r
- const char *version, int stream_size));\r
-ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,\r
- unsigned char FAR *window,\r
- const char *version,\r
- int stream_size));\r
-#define deflateInit(strm, level) \\r
- deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))\r
-#define inflateInit(strm) \\r
- inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))\r
-#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \\r
- deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\\r
- (strategy), ZLIB_VERSION, sizeof(z_stream))\r
-#define inflateInit2(strm, windowBits) \\r
- inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))\r
-#define inflateBackInit(strm, windowBits, window) \\r
- inflateBackInit_((strm), (windowBits), (window), \\r
- ZLIB_VERSION, sizeof(z_stream))\r
-\r
-/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or\r
- * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if\r
- * both are true, the application gets the *64 functions, and the regular\r
- * functions are changed to 64 bits) -- in case these are set on systems\r
- * without large file support, _LFS64_LARGEFILE must also be true\r
- */\r
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0\r
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
- ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));\r
- ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));\r
- ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));\r
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));\r
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));\r
-#endif\r
-\r
-#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0\r
-# define gzopen gzopen64\r
-# define gzseek gzseek64\r
-# define gztell gztell64\r
-# define gzoffset gzoffset64\r
-# define adler32_combine adler32_combine64\r
-# define crc32_combine crc32_combine64\r
-# ifdef _LARGEFILE64_SOURCE\r
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
- ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));\r
- ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));\r
- ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));\r
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));\r
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));\r
-# endif\r
-#else\r
- ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));\r
- ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));\r
- ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));\r
- ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));\r
- ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));\r
- ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));\r
-#endif\r
-\r
-/* hack for buggy compilers */\r
-#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)\r
- struct internal_state {int dummy;};\r
-#endif\r
-\r
-/* undocumented functions */\r
-ZEXTERN const char * ZEXPORT zError OF((int));\r
-ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp));\r
-ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));\r
-ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));\r
-\r
-#ifdef __cplusplus\r
-}\r
-#endif\r
-\r
-#endif /* ZLIB_H */\r
+++ /dev/null
-/* zutil.c -- target dependent utility functions for the compression library\r
- * Copyright (C) 1995-2005, 2010 Jean-loup Gailly.\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* \param (#) $Id$ */\r
-\r
-#include "zutil.h"\r
-\r
-#ifndef NO_DUMMY_DECL\r
-struct internal_state {int dummy;}; /* for buggy compilers */\r
-#endif\r
-\r
-const char * const z_errmsg[10] = {\r
-"need dictionary", /* Z_NEED_DICT 2 */\r
-"stream end", /* Z_STREAM_END 1 */\r
-"", /* Z_OK 0 */\r
-"file error", /* Z_ERRNO (-1) */\r
-"stream error", /* Z_STREAM_ERROR (-2) */\r
-"data error", /* Z_DATA_ERROR (-3) */\r
-"insufficient memory", /* Z_MEM_ERROR (-4) */\r
-"buffer error", /* Z_BUF_ERROR (-5) */\r
-"incompatible version",/* Z_VERSION_ERROR (-6) */\r
-""};\r
-\r
-\r
-const char * ZEXPORT zlibVersion()\r
-{\r
- return ZLIB_VERSION;\r
-}\r
-\r
-uLong ZEXPORT zlibCompileFlags()\r
-{\r
- uLong flags;\r
-\r
- flags = 0;\r
- switch ((int)(sizeof(uInt))) {\r
- case 2: break;\r
- case 4: flags += 1; break;\r
- case 8: flags += 2; break;\r
- default: flags += 3;\r
- }\r
- switch ((int)(sizeof(uLong))) {\r
- case 2: break;\r
- case 4: flags += 1 << 2; break;\r
- case 8: flags += 2 << 2; break;\r
- default: flags += 3 << 2;\r
- }\r
- switch ((int)(sizeof(voidpf))) {\r
- case 2: break;\r
- case 4: flags += 1 << 4; break;\r
- case 8: flags += 2 << 4; break;\r
- default: flags += 3 << 4;\r
- }\r
- switch ((int)(sizeof(z_off_t))) {\r
- case 2: break;\r
- case 4: flags += 1 << 6; break;\r
- case 8: flags += 2 << 6; break;\r
- default: flags += 3 << 6;\r
- }\r
-#ifdef DEBUG\r
- flags += 1 << 8;\r
-#endif\r
-#if defined(ASMV) || defined(ASMINF)\r
- flags += 1 << 9;\r
-#endif\r
-#ifdef ZLIB_WINAPI\r
- flags += 1 << 10;\r
-#endif\r
-#ifdef BUILDFIXED\r
- flags += 1 << 12;\r
-#endif\r
-#ifdef DYNAMIC_CRC_TABLE\r
- flags += 1 << 13;\r
-#endif\r
-#ifdef NO_GZCOMPRESS\r
- flags += 1L << 16;\r
-#endif\r
-#ifdef NO_GZIP\r
- flags += 1L << 17;\r
-#endif\r
-#ifdef PKZIP_BUG_WORKAROUND\r
- flags += 1L << 20;\r
-#endif\r
-#ifdef FASTEST\r
- flags += 1L << 21;\r
-#endif\r
-#ifdef STDC\r
-# ifdef NO_vsnprintf\r
- flags += 1L << 25;\r
-# ifdef HAS_vsprintf_void\r
- flags += 1L << 26;\r
-# endif\r
-# else\r
-# ifdef HAS_vsnprintf_void\r
- flags += 1L << 26;\r
-# endif\r
-# endif\r
-#else\r
- flags += 1L << 24;\r
-# ifdef NO_snprintf\r
- flags += 1L << 25;\r
-# ifdef HAS_sprintf_void\r
- flags += 1L << 26;\r
-# endif\r
-# else\r
-# ifdef HAS_snprintf_void\r
- flags += 1L << 26;\r
-# endif\r
-# endif\r
-#endif\r
- return flags;\r
-}\r
-\r
-#ifdef DEBUG\r
-\r
-# ifndef verbose\r
-# define verbose 0\r
-# endif\r
-int ZLIB_INTERNAL z_verbose = verbose;\r
-\r
-void ZLIB_INTERNAL z_error (m)\r
- char *m;\r
-{\r
- fprintf(stderr, "%s\n", m);\r
- exit(1);\r
-}\r
-#endif\r
-\r
-/* exported to allow conversion of error code to string for compress() and\r
- * uncompress()\r
- */\r
-const char * ZEXPORT zError(err)\r
- int err;\r
-{\r
- return ERR_MSG(err);\r
-}\r
-\r
-#if defined(_WIN32_WCE)\r
- /* The Microsoft C Run-Time Library for Windows CE doesn't have\r
- * errno. We define it as a global variable to simplify porting.\r
- * Its value is always 0 and should not be used.\r
- */\r
- int errno = 0;\r
-#endif\r
-\r
-#ifndef HAVE_MEMCPY\r
-\r
-void ZLIB_INTERNAL zmemcpy(dest, source, len)\r
- Bytef* dest;\r
- const Bytef* source;\r
- uInt len;\r
-{\r
- if (len == 0) return;\r
- do {\r
- *dest++ = *source++; /* ??? to be unrolled */\r
- } while (--len != 0);\r
-}\r
-\r
-int ZLIB_INTERNAL zmemcmp(s1, s2, len)\r
- const Bytef* s1;\r
- const Bytef* s2;\r
- uInt len;\r
-{\r
- uInt j;\r
-\r
- for (j = 0; j < len; j++) {\r
- if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;\r
- }\r
- return 0;\r
-}\r
-\r
-void ZLIB_INTERNAL zmemzero(dest, len)\r
- Bytef* dest;\r
- uInt len;\r
-{\r
- if (len == 0) return;\r
- do {\r
- *dest++ = 0; /* ??? to be unrolled */\r
- } while (--len != 0);\r
-}\r
-#endif\r
-\r
-\r
-#ifdef SYS16BIT\r
-\r
-#ifdef __TURBOC__\r
-/* Turbo C in 16-bit mode */\r
-\r
-# define MY_ZCALLOC\r
-\r
-/* Turbo C malloc() does not allow dynamic allocation of 64K bytes\r
- * and farmalloc(64K) returns a pointer with an offset of 8, so we\r
- * must fix the pointer. Warning: the pointer must be put back to its\r
- * original form in order to free it, use zcfree().\r
- */\r
-\r
-#define MAX_PTR 10\r
-/* 10*64K = 640K */\r
-\r
-local int next_ptr = 0;\r
-\r
-typedef struct ptr_table_s {\r
- voidpf org_ptr;\r
- voidpf new_ptr;\r
-} ptr_table;\r
-\r
-local ptr_table table[MAX_PTR];\r
-/* This table is used to remember the original form of pointers\r
- * to large buffers (64K). Such pointers are normalized with a zero offset.\r
- * Since MSDOS is not a preemptive multitasking OS, this table is not\r
- * protected from concurrent access. This hack doesn't work anyway on\r
- * a protected system like OS/2. Use Microsoft C instead.\r
- */\r
-\r
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)\r
-{\r
- voidpf buf = opaque; /* just to make some compilers happy */\r
- ulg bsize = (ulg)items*size;\r
-\r
- /* If we allocate less than 65520 bytes, we assume that farmalloc\r
- * will return a usable pointer which doesn't have to be normalized.\r
- */\r
- if (bsize < 65520L) {\r
- buf = farmalloc(bsize);\r
- if (*(ush*)&buf != 0) return buf;\r
- } else {\r
- buf = farmalloc(bsize + 16L);\r
- }\r
- if (buf == NULL || next_ptr >= MAX_PTR) return NULL;\r
- table[next_ptr].org_ptr = buf;\r
-\r
- /* Normalize the pointer to seg:0 */\r
- *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;\r
- *(ush*)&buf = 0;\r
- table[next_ptr++].new_ptr = buf;\r
- return buf;\r
-}\r
-\r
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)\r
-{\r
- int n;\r
- if (*(ush*)&ptr != 0) { /* object < 64K */\r
- farfree(ptr);\r
- return;\r
- }\r
- /* Find the original pointer */\r
- for (n = 0; n < next_ptr; n++) {\r
- if (ptr != table[n].new_ptr) continue;\r
-\r
- farfree(table[n].org_ptr);\r
- while (++n < next_ptr) {\r
- table[n-1] = table[n];\r
- }\r
- next_ptr--;\r
- return;\r
- }\r
- ptr = opaque; /* just to make some compilers happy */\r
- Assert(0, "zcfree: ptr not found");\r
-}\r
-\r
-#endif /* __TURBOC__ */\r
-\r
-\r
-#ifdef M_I86\r
-/* Microsoft C in 16-bit mode */\r
-\r
-# define MY_ZCALLOC\r
-\r
-#if (!defined(_MSC_VER) || (_MSC_VER <= 600))\r
-# define _halloc halloc\r
-# define _hfree hfree\r
-#endif\r
-\r
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)\r
-{\r
- if (opaque) opaque = 0; /* to make compiler happy */\r
- return _halloc((long)items, size);\r
-}\r
-\r
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)\r
-{\r
- if (opaque) opaque = 0; /* to make compiler happy */\r
- _hfree(ptr);\r
-}\r
-\r
-#endif /* M_I86 */\r
-\r
-#endif /* SYS16BIT */\r
-\r
-\r
-#ifndef MY_ZCALLOC /* Any system without a special alloc function */\r
-\r
-#ifndef STDC\r
-extern voidp malloc OF((uInt size));\r
-extern voidp calloc OF((uInt items, uInt size));\r
-extern void free OF((voidpf ptr));\r
-#endif\r
-\r
-voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)\r
- voidpf opaque;\r
- unsigned items;\r
- unsigned size;\r
-{\r
- if (opaque) items += size - size; /* make compiler happy */\r
- return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :\r
- (voidpf)calloc(items, size);\r
-}\r
-\r
-void ZLIB_INTERNAL zcfree (opaque, ptr)\r
- voidpf opaque;\r
- voidpf ptr;\r
-{\r
- free(ptr);\r
- if (opaque) return; /* make compiler happy */\r
-}\r
-\r
-#endif /* MY_ZCALLOC */\r
+++ /dev/null
-/* zutil.h -- internal interface and configuration of the compression library\r
- * Copyright (C) 1995-2010 Jean-loup Gailly.\r
- * For conditions of distribution and use, see copyright notice in zlib.h\r
- */\r
-\r
-/* WARNING: this file should *not* be used by applications. It is\r
- part of the implementation of the compression library and is\r
- subject to change. Applications should only use zlib.h.\r
- */\r
-\r
-/* \param (#) $Id$ */\r
-\r
-#ifndef ZUTIL_H\r
-#define ZUTIL_H\r
-\r
-#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) && !defined(_WIN32)\r
-# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))\r
-#else\r
-# define ZLIB_INTERNAL\r
-#endif\r
-\r
-#include "zlib.h"\r
-\r
-#ifdef STDC\r
-# if !(defined(_WIN32_WCE) && defined(_MSC_VER))\r
-# include <stddef.h>\r
-# endif\r
-# include <string.h>\r
-# include <stdlib.h>\r
-#endif\r
-\r
-#ifndef local\r
-# define local static\r
-#endif\r
-/* compile with -Dlocal if your debugger can't find static symbols */\r
-\r
-typedef unsigned char uch;\r
-typedef uch FAR uchf;\r
-typedef unsigned short ush;\r
-typedef ush FAR ushf;\r
-typedef unsigned long ulg;\r
-\r
-extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */\r
-/* (size given to avoid silly warnings with Visual C++) */\r
-\r
-#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]\r
-\r
-#define ERR_RETURN(strm,err) \\r
- return (strm->msg = (char*)ERR_MSG(err), (err))\r
-/* To be used only when the state is known to be valid */\r
-\r
- /* common constants */\r
-\r
-#ifndef DEF_WBITS\r
-# define DEF_WBITS MAX_WBITS\r
-#endif\r
-/* default windowBits for decompression. MAX_WBITS is for compression only */\r
-\r
-#if MAX_MEM_LEVEL >= 8\r
-# define DEF_MEM_LEVEL 8\r
-#else\r
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL\r
-#endif\r
-/* default memLevel */\r
-\r
-#define STORED_BLOCK 0\r
-#define STATIC_TREES 1\r
-#define DYN_TREES 2\r
-/* The three kinds of block type */\r
-\r
-#define MIN_MATCH 3\r
-#define MAX_MATCH 258\r
-/* The minimum and maximum match lengths */\r
-\r
-#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */\r
-\r
- /* target dependencies */\r
-\r
-#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))\r
-# define OS_CODE 0x00\r
-# if defined(__TURBOC__) || defined(__BORLANDC__)\r
-# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))\r
- /* Allow compilation with ANSI keywords only enabled */\r
- void _Cdecl farfree( void *block );\r
- void *_Cdecl farmalloc( unsigned long nbytes );\r
-# else\r
-# include <alloc.h>\r
-# endif\r
-# else /* MSC or DJGPP */\r
-# include <malloc.h>\r
-# endif\r
-#endif\r
-\r
-#ifdef AMIGA\r
-# define OS_CODE 0x01\r
-#endif\r
-\r
-#if defined(VAXC) || defined(VMS)\r
-# define OS_CODE 0x02\r
-# define F_OPEN(name, mode) \\r
- fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")\r
-#endif\r
-\r
-#if defined(ATARI) || defined(atarist)\r
-# define OS_CODE 0x05\r
-#endif\r
-\r
-#ifdef OS2\r
-# define OS_CODE 0x06\r
-# ifdef M_I86\r
-# include <malloc.h>\r
-# endif\r
-#endif\r
-\r
-#if defined(MACOS) || defined(TARGET_OS_MAC)\r
-# define OS_CODE 0x07\r
-# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os\r
-# include <unix.h> /* for fdopen */\r
-# else\r
-# ifndef fdopen\r
-# define fdopen(fd,mode) NULL /* No fdopen() */\r
-# endif\r
-# endif\r
-#endif\r
-\r
-#ifdef TOPS20\r
-# define OS_CODE 0x0a\r
-#endif\r
-\r
-#ifdef WIN32\r
-# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */\r
-# define OS_CODE 0x0b\r
-# endif\r
-#endif\r
-\r
-#ifdef __50SERIES /* Prime/PRIMOS */\r
-# define OS_CODE 0x0f\r
-#endif\r
-\r
-#if defined(_BEOS_) || defined(RISCOS)\r
-# define fdopen(fd,mode) NULL /* No fdopen() */\r
-#endif\r
-\r
-#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX\r
-# if defined(_WIN32_WCE)\r
-# define fdopen(fd,mode) NULL /* No fdopen() */\r
-# ifndef _PTRDIFF_T_DEFINED\r
- typedef int ptrdiff_t;\r
-# define _PTRDIFF_T_DEFINED\r
-# endif\r
-# else\r
-# define fdopen(fd,type) _fdopen(fd,type)\r
-# endif\r
-#endif\r
-\r
-#if defined(__BORLANDC__)\r
- #pragma warn -8004\r
- #pragma warn -8008\r
- #pragma warn -8066\r
-#endif\r
-\r
-/* provide prototypes for these when building zlib without LFS */\r
-#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0\r
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));\r
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));\r
-#endif\r
-\r
- /* common defaults */\r
-\r
-#ifndef OS_CODE\r
-# define OS_CODE 0x03 /* assume Unix */\r
-#endif\r
-\r
-#ifndef F_OPEN\r
-# define F_OPEN(name, mode) fopen((name), (mode))\r
-#endif\r
-\r
- /* functions */\r
-\r
-#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)\r
-# ifndef HAVE_VSNPRINTF\r
-# define HAVE_VSNPRINTF\r
-# endif\r
-#endif\r
-#if defined(__CYGWIN__)\r
-# ifndef HAVE_VSNPRINTF\r
-# define HAVE_VSNPRINTF\r
-# endif\r
-#endif\r
-#ifndef HAVE_VSNPRINTF\r
-# ifdef MSDOS\r
- /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),\r
- but for now we just assume it doesn't. */\r
-# define NO_vsnprintf\r
-# endif\r
-# ifdef __TURBOC__\r
-# define NO_vsnprintf\r
-# endif\r
-# ifdef WIN32\r
- /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */\r
-# if !defined(vsnprintf) && !defined(NO_vsnprintf)\r
-# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )\r
-# define vsnprintf _vsnprintf\r
-# endif\r
-# endif\r
-# endif\r
-# ifdef __SASC\r
-# define NO_vsnprintf\r
-# endif\r
-#endif\r
-#ifdef VMS\r
-# define NO_vsnprintf\r
-#endif\r
-\r
-#if defined(pyr)\r
-# define NO_MEMCPY\r
-#endif\r
-#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)\r
- /* Use our own functions for small and medium model with MSC <= 5.0.\r
- * You may have to use the same strategy for Borland C (untested).\r
- * The __SC__ check is for Symantec.\r
- */\r
-# define NO_MEMCPY\r
-#endif\r
-#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)\r
-# define HAVE_MEMCPY\r
-#endif\r
-#ifdef HAVE_MEMCPY\r
-# ifdef SMALL_MEDIUM /* MSDOS small or medium model */\r
-# define zmemcpy _fmemcpy\r
-# define zmemcmp _fmemcmp\r
-# define zmemzero(dest, len) _fmemset(dest, 0, len)\r
-# else\r
-# define zmemcpy memcpy\r
-# define zmemcmp memcmp\r
-# define zmemzero(dest, len) memset(dest, 0, len)\r
-# endif\r
-#else\r
- void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));\r
- int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));\r
- void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));\r
-#endif\r
-\r
-/* Diagnostic functions */\r
-#ifdef DEBUG\r
-# include <stdio.h>\r
- extern int ZLIB_INTERNAL z_verbose;\r
- extern void ZLIB_INTERNAL z_error OF((char *m));\r
-# define Assert(cond,msg) {if(!(cond)) z_error(msg);}\r
-# define Trace(x) {if (z_verbose>=0) fprintf x ;}\r
-# define Tracev(x) {if (z_verbose>0) fprintf x ;}\r
-# define Tracevv(x) {if (z_verbose>1) fprintf x ;}\r
-# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}\r
-# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}\r
-#else\r
-# define Assert(cond,msg)\r
-# define Trace(x)\r
-# define Tracev(x)\r
-# define Tracevv(x)\r
-# define Tracec(c,x)\r
-# define Tracecv(c,x)\r
-#endif\r
-\r
-\r
-voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,\r
- unsigned size));\r
-void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));\r
-\r
-#define ZALLOC(strm, items, size) \\r
- (*((strm)->zalloc))((strm)->opaque, (items), (size))\r
-#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))\r
-#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}\r
-\r
-#endif /* ZUTIL_H */\r
projects / platform / upstream / libwebsockets.git / commitdiff