*
* Copyright (C) Andrew Tridgell 1996
* Copyright (C) Paul Mackerras 1996
- * Copyright (C) 2004, 2005, 2006 Wayne Davison
+ * Copyright (C) 2004-2022 Wayne Davison
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, visit the http://fsf.org website.
*/
#include "rsync.h"
+#include "itypes.h"
+#include "ifuncs.h"
-int remote_protocol = 0;
-
-extern int verbose;
extern int am_server;
+extern int am_sender;
+extern int local_server;
extern int inplace;
+extern int recurse;
+extern int use_qsort;
+extern int allow_inc_recurse;
+extern int preallocate_files;
+extern int append_mode;
extern int fuzzy_basis;
extern int read_batch;
+extern int write_batch;
+extern int delay_updates;
extern int checksum_seed;
extern int basis_dir_cnt;
extern int prune_empty_dirs;
extern int protocol_version;
-extern char *dest_option;
+extern int protect_args;
+extern int preserve_uid;
+extern int preserve_gid;
+extern int preserve_atimes;
+extern int preserve_crtimes;
+extern int preserve_acls;
+extern int preserve_xattrs;
+extern int xfer_flags_as_varint;
+extern int need_messages_from_generator;
+extern int delete_mode, delete_before, delete_during, delete_after;
+extern int do_compression;
+extern int do_compression_level;
+extern int saw_stderr_opt;
+extern int msgs2stderr;
+extern char *shell_cmd;
+extern char *partial_dir;
+extern char *files_from;
+extern char *filesfrom_host;
+extern const char *checksum_choice;
+extern const char *compress_choice;
+extern char *daemon_auth_choices;
+extern filter_rule_list filter_list;
+extern int need_unsorted_flist;
+#ifdef ICONV_OPTION
+extern iconv_t ic_send, ic_recv;
+extern char *iconv_opt;
+#endif
+extern struct name_num_obj valid_checksums, valid_auth_checksums;
+
+extern struct name_num_item *xfer_sum_nni;
+
+int remote_protocol = 0;
+int file_extra_cnt = 0; /* count of file-list extras that everyone gets */
+int inc_recurse = 0;
+int compat_flags = 0;
+int use_safe_inc_flist = 0;
+int want_xattr_optim = 0;
+int proper_seed_order = 0;
+int inplace_partial = 0;
+int do_negotiated_strings = 0;
+int xmit_id0_names = 0;
+
+struct name_num_item *xattr_sum_nni;
+int xattr_sum_len = 0;
+
+/* These index values are for the file-list's extra-attribute array. */
+int pathname_ndx, depth_ndx, atimes_ndx, crtimes_ndx, uid_ndx, gid_ndx, acls_ndx, xattrs_ndx, unsort_ndx;
+
+int receiver_symlink_times = 0; /* receiver can set the time on a symlink */
+int sender_symlink_iconv = 0; /* sender should convert symlink content */
+
+#ifdef ICONV_OPTION
+int filesfrom_convert = 0;
+#endif
+
+#define MAX_NSTR_STRLEN 256
+
+struct name_num_item valid_compressions_items[] = {
+#ifdef SUPPORT_ZSTD
+ { CPRES_ZSTD, 0, "zstd", NULL },
+#endif
+#ifdef SUPPORT_LZ4
+ { CPRES_LZ4, 0, "lz4", NULL },
+#endif
+ { CPRES_ZLIBX, 0, "zlibx", NULL },
+ { CPRES_ZLIB, 0, "zlib", NULL },
+ { CPRES_NONE, 0, "none", NULL },
+ { 0, 0, NULL, NULL }
+};
+
+struct name_num_obj valid_compressions = {
+ "compress", NULL, 0, 0, valid_compressions_items
+};
+
+#define CF_INC_RECURSE (1<<0)
+#define CF_SYMLINK_TIMES (1<<1)
+#define CF_SYMLINK_ICONV (1<<2)
+#define CF_SAFE_FLIST (1<<3)
+#define CF_AVOID_XATTR_OPTIM (1<<4)
+#define CF_CHKSUM_SEED_FIX (1<<5)
+#define CF_INPLACE_PARTIAL_DIR (1<<6)
+#define CF_VARINT_FLIST_FLAGS (1<<7)
+#define CF_ID0_NAMES (1<<8)
+
+static const char *client_info;
+
+/* The server makes sure that if either side only supports a pre-release
+ * version of a protocol, that both sides must speak a compatible version
+ * of that protocol for it to be advertised as available. */
+static void check_sub_protocol(void)
+{
+ char *dot;
+ int their_protocol, their_sub;
+ int our_sub = get_subprotocol_version();
+
+ /* client_info starts with VER.SUB string if client is a pre-release. */
+ if (!(their_protocol = atoi(client_info))
+ || !(dot = strchr(client_info, '.'))
+ || !(their_sub = atoi(dot+1))) {
+#if SUBPROTOCOL_VERSION != 0
+ if (our_sub)
+ protocol_version--;
+#endif
+ return;
+ }
+
+ if (their_protocol < protocol_version) {
+ if (their_sub)
+ protocol_version = their_protocol - 1;
+ return;
+ }
+
+ if (their_protocol > protocol_version)
+ their_sub = 0; /* 0 == final version of older protocol */
+ if (their_sub != our_sub)
+ protocol_version--;
+}
+
+void set_allow_inc_recurse(void)
+{
+ if (!local_server)
+ client_info = shell_cmd ? shell_cmd : "";
+ else if (am_server) {
+ char buf[64];
+ maybe_add_e_option(buf, sizeof buf);
+ client_info = *buf ? strdup(buf+1) : ""; /* The +1 skips the leading "e". */
+ }
+
+ if (!recurse || use_qsort)
+ allow_inc_recurse = 0;
+ else if (!am_sender
+ && (delete_before || delete_after
+ || delay_updates || prune_empty_dirs))
+ allow_inc_recurse = 0;
+ else if (am_server && strchr(client_info, 'i') == NULL)
+ allow_inc_recurse = 0;
+}
+
+void parse_compress_choice(int final_call)
+{
+ if (valid_compressions.negotiated_nni)
+ do_compression = valid_compressions.negotiated_nni->num;
+ else if (compress_choice) {
+ struct name_num_item *nni = get_nni_by_name(&valid_compressions, compress_choice, -1);
+ if (!nni) {
+ rprintf(FERROR, "unknown compress name: %s\n", compress_choice);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+ do_compression = nni->num;
+ if (am_server)
+ validate_choice_vs_env(NSTR_COMPRESS, do_compression, -1);
+ } else if (do_compression)
+ do_compression = CPRES_ZLIB;
+ else
+ do_compression = CPRES_NONE;
+
+ if (do_compression != CPRES_NONE && final_call)
+ init_compression_level(); /* There's a chance this might turn compression off! */
+
+ if (do_compression == CPRES_NONE)
+ compress_choice = NULL;
+
+ /* Snag the compression name for both write_batch's option output & the following debug output. */
+ if (valid_compressions.negotiated_nni)
+ compress_choice = valid_compressions.negotiated_nni->name;
+ else if (compress_choice == NULL) {
+ struct name_num_item *nni = get_nni_by_num(&valid_compressions, do_compression);
+ compress_choice = nni ? nni->name : "UNKNOWN";
+ }
+
+ if (final_call && DEBUG_GTE(NSTR, am_server ? 3 : 1)
+ && (do_compression != CPRES_NONE || do_compression_level != CLVL_NOT_SPECIFIED)) {
+ rprintf(FINFO, "%s%s compress: %s (level %d)\n",
+ am_server ? "Server" : "Client",
+ valid_compressions.negotiated_nni ? " negotiated" : "",
+ compress_choice, do_compression_level);
+ }
+}
+
+struct name_num_item *get_nni_by_name(struct name_num_obj *nno, const char *name, int len)
+{
+ struct name_num_item *nni;
+
+ if (len < 0)
+ len = strlen(name);
+
+ for (nni = nno->list; nni->name; nni++) {
+ if (nni->num == CSUM_gone)
+ continue;
+ if (strncasecmp(name, nni->name, len) == 0 && nni->name[len] == '\0')
+ return nni;
+ }
+
+ return NULL;
+}
+
+struct name_num_item *get_nni_by_num(struct name_num_obj *nno, int num)
+{
+ struct name_num_item *nni;
+
+ for (nni = nno->list; nni->name; nni++) {
+ if (num == nni->num)
+ return nni;
+ }
+
+ return NULL;
+}
+
+static void init_nno_saw(struct name_num_obj *nno, int val)
+{
+ struct name_num_item *nni;
+ int cnt;
+
+ if (!nno->saw_len) {
+ for (nni = nno->list; nni->name; nni++) {
+ if (nni->num >= nno->saw_len)
+ nno->saw_len = nni->num + 1;
+ }
+ }
+
+ if (!nno->saw) {
+ nno->saw = new_array0(uchar, nno->saw_len);
+
+ /* We'll take this opportunity to set the main_nni values for duplicates. */
+ for (cnt = 1, nni = nno->list; nni->name; nni++, cnt++) {
+ if (nni->num == CSUM_gone)
+ continue;
+ if (nno->saw[nni->num])
+ nni->main_nni = &nno->list[nno->saw[nni->num]-1];
+ else
+ nno->saw[nni->num] = cnt;
+ }
+ }
+
+ memset(nno->saw, val, nno->saw_len);
+}
+
+/* Simplify the user-provided string so that it contains valid names without any duplicates.
+ * It also sets the "saw" flags to a 1-relative count of which name was seen first. */
+static int parse_nni_str(struct name_num_obj *nno, const char *from, char *tobuf, int tobuf_len)
+{
+ char *to = tobuf, *tok = NULL;
+ int saw_tok = 0, cnt = 0;
+
+ while (1) {
+ int at_space = isSpace(from);
+ char ch = *from++;
+ if (ch == '&')
+ ch = '\0';
+ if (!ch || at_space) {
+ if (tok) {
+ struct name_num_item *nni = get_nni_by_name(nno, tok, to - tok);
+ if (nni && !nno->saw[nni->num]) {
+ nno->saw[nni->num] = ++cnt;
+ if (nni->main_nni) {
+ to = tok + strlcpy(tok, nni->main_nni->name, tobuf_len - (tok - tobuf));
+ if (to - tobuf >= tobuf_len) {
+ to = tok - 1;
+ break;
+ }
+ }
+ } else
+ to = tok - (tok != tobuf);
+ saw_tok = 1;
+ tok = NULL;
+ }
+ if (!ch)
+ break;
+ continue;
+ }
+ if (!tok) {
+ if (to != tobuf)
+ *to++ = ' ';
+ tok = to;
+ }
+ if (to - tobuf >= tobuf_len - 1) {
+ to = tok - (tok != tobuf);
+ break;
+ }
+ *to++ = ch;
+ }
+ *to = '\0';
+
+ if (saw_tok && to == tobuf)
+ return strlcpy(tobuf, "INVALID", MAX_NSTR_STRLEN);
+
+ return to - tobuf;
+}
+
+static int parse_negotiate_str(struct name_num_obj *nno, char *tmpbuf)
+{
+ struct name_num_item *nni, *ret = NULL;
+ int best = nno->saw_len; /* We want best == 1 from the client list, so start with a big number. */
+ char *space, *tok = tmpbuf;
+ while (tok) {
+ while (*tok == ' ') tok++; /* Should be unneeded... */
+ if (!*tok)
+ break;
+ if ((space = strchr(tok, ' ')) != NULL)
+ *space = '\0';
+ nni = get_nni_by_name(nno, tok, -1);
+ if (space) {
+ *space = ' ';
+ tok = space + 1;
+ } else
+ tok = NULL;
+ if (!nni || !nno->saw[nni->num] || best <= nno->saw[nni->num])
+ continue;
+ ret = nni;
+ best = nno->saw[nni->num];
+ if (best == 1 || am_server) /* The server side stops at the first acceptable client choice */
+ break;
+ }
+ if (ret) {
+ free(nno->saw);
+ nno->saw = NULL;
+ nno->negotiated_nni = ret->main_nni ? ret->main_nni : ret;
+ return 1;
+ }
+ return 0;
+}
+
+/* This routine is always called with a tmpbuf of MAX_NSTR_STRLEN length, but the
+ * buffer may be pre-populated with a "len" length string to use OR a len of -1
+ * to tell us to read a string from the fd. */
+static void recv_negotiate_str(int f_in, struct name_num_obj *nno, char *tmpbuf, int len)
+{
+ if (len < 0)
+ len = read_vstring(f_in, tmpbuf, MAX_NSTR_STRLEN);
+
+ if (DEBUG_GTE(NSTR, am_server ? 3 : 2)) {
+ if (am_server)
+ rprintf(FINFO, "Client %s list (on server): %s\n", nno->type, tmpbuf);
+ else
+ rprintf(FINFO, "Server %s list (on client): %s\n", nno->type, tmpbuf);
+ }
+
+ if (len > 0 && parse_negotiate_str(nno, tmpbuf))
+ return;
+
+ if (!am_server || !do_negotiated_strings) {
+ char *cp = tmpbuf;
+ int j;
+ rprintf(FERROR, "Failed to negotiate a %s choice.\n", nno->type);
+ rprintf(FERROR, "%s list: %s\n", am_server ? "Client" : "Server", tmpbuf);
+ /* Recreate our original list from the saw values. This can't overflow our huge
+ * buffer because we don't have enough valid entries to get anywhere close. */
+ for (j = 1, *cp = '\0'; j <= nno->saw_len; j++) {
+ struct name_num_item *nni;
+ for (nni = nno->list; nni->name; nni++) {
+ if (nno->saw[nni->num] == j) {
+ *cp++ = ' ';
+ cp += strlcpy(cp, nni->name, MAX_NSTR_STRLEN - (cp - tmpbuf));
+ break;
+ }
+ }
+ }
+ if (!*tmpbuf)
+ strlcpy(cp, " INVALID", MAX_NSTR_STRLEN);
+ rprintf(FERROR, "%s list:%s\n", am_server ? "Server" : "Client", tmpbuf);
+ }
+
+ exit_cleanup(RERR_UNSUPPORTED);
+}
+
+static const char *getenv_nstr(int ntype)
+{
+ const char *env_str = getenv(ntype == NSTR_COMPRESS ? "RSYNC_COMPRESS_LIST" : "RSYNC_CHECKSUM_LIST");
+
+ /* When writing a batch file, we always negotiate an old-style choice. */
+ if (write_batch)
+ env_str = ntype == NSTR_COMPRESS ? "zlib" : protocol_version >= 30 ? "md5" : "md4";
+
+ if (am_server && env_str) {
+ char *cp = strchr(env_str, '&');
+ if (cp)
+ env_str = cp + 1;
+ }
+
+ return env_str;
+}
+
+void validate_choice_vs_env(int ntype, int num1, int num2)
+{
+ struct name_num_obj *nno = ntype == NSTR_COMPRESS ? &valid_compressions : &valid_checksums;
+ const char *list_str = getenv_nstr(ntype);
+ char tmpbuf[MAX_NSTR_STRLEN];
+
+ if (!list_str)
+ return;
+
+ while (isSpace(list_str)) list_str++;
+
+ if (!*list_str)
+ return;
+
+ init_nno_saw(nno, 0);
+ parse_nni_str(nno, list_str, tmpbuf, MAX_NSTR_STRLEN);
+
+ if (ntype == NSTR_CHECKSUM) /* If "md4" is in the env list, all the old MD4 choices are OK too. */
+ nno->saw[CSUM_MD4_ARCHAIC] = nno->saw[CSUM_MD4_BUSTED] = nno->saw[CSUM_MD4_OLD] = nno->saw[CSUM_MD4];
+
+ if (!nno->saw[num1] || (num2 >= 0 && !nno->saw[num2])) {
+ rprintf(FERROR, "Your --%s-choice value (%s) was refused by the server.\n",
+ ntype == NSTR_COMPRESS ? "compress" : "checksum",
+ ntype == NSTR_COMPRESS ? compress_choice : checksum_choice);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+
+ free(nno->saw);
+ nno->saw = NULL;
+}
+
+/* The saw buffer is initialized and used to store ordinal values from 1 to N
+ * for the order of the args in the array. If dup_markup == '\0', duplicates
+ * are removed otherwise the char is prefixed to the duplicate term and, if it
+ * is an opening paren/bracket/brace, the matching closing char is suffixed.
+ * "none" is removed on the client side unless dup_markup != '\0'. */
+int get_default_nno_list(struct name_num_obj *nno, char *to_buf, int to_buf_len, char dup_markup)
+{
+ struct name_num_item *nni;
+ int len = 0, cnt = 0;
+ char delim = '\0', post_delim;
+
+ switch (dup_markup) {
+ case '(': post_delim = ')'; break;
+ case '[': post_delim = ']'; break;
+ case '{': post_delim = '}'; break;
+ default: post_delim = '\0'; break;
+ }
+
+ init_nno_saw(nno, 0);
+
+ for (nni = nno->list, len = 0; nni->name; nni++) {
+ if (nni->num == CSUM_gone)
+ continue;
+ if (nni->main_nni) {
+ if (!dup_markup || nni->main_nni->num == CSUM_gone)
+ continue;
+ delim = dup_markup;
+ }
+ if (nni->num == 0 && !am_server && !dup_markup)
+ continue;
+ if (len)
+ to_buf[len++]= ' ';
+ if (delim) {
+ to_buf[len++]= delim;
+ delim = post_delim;
+ }
+ len += strlcpy(to_buf+len, nni->name, to_buf_len - len);
+ if (len >= to_buf_len - 3)
+ exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE... */
+ if (delim) {
+ to_buf[len++]= delim;
+ delim = '\0';
+ }
+ nno->saw[nni->num] = ++cnt;
+ }
+
+ return len;
+}
+
+static void send_negotiate_str(int f_out, struct name_num_obj *nno, int ntype)
+{
+ char tmpbuf[MAX_NSTR_STRLEN];
+ const char *list_str = getenv_nstr(ntype);
+ int len;
+
+ if (list_str && *list_str) {
+ init_nno_saw(nno, 0);
+ len = parse_nni_str(nno, list_str, tmpbuf, MAX_NSTR_STRLEN);
+ list_str = tmpbuf;
+ } else
+ list_str = NULL;
+
+ if (!list_str || !*list_str)
+ len = get_default_nno_list(nno, tmpbuf, MAX_NSTR_STRLEN, '\0');
+
+ if (DEBUG_GTE(NSTR, am_server ? 3 : 2)) {
+ if (am_server)
+ rprintf(FINFO, "Server %s list (on server): %s\n", nno->type, tmpbuf);
+ else
+ rprintf(FINFO, "Client %s list (on client): %s\n", nno->type, tmpbuf);
+ }
+
+ /* Each side sends their list of valid names to the other side and then both sides
+ * pick the first name in the client's list that is also in the server's list. */
+ if (do_negotiated_strings)
+ write_vstring(f_out, tmpbuf, len);
+}
+
+static void negotiate_the_strings(int f_in, int f_out)
+{
+ /* We send all the negotiation strings before we start to read them to help avoid a slow startup. */
+
+ init_checksum_choices();
+
+ if (!checksum_choice)
+ send_negotiate_str(f_out, &valid_checksums, NSTR_CHECKSUM);
+
+ if (do_compression && !compress_choice)
+ send_negotiate_str(f_out, &valid_compressions, NSTR_COMPRESS);
+
+ if (valid_checksums.saw) {
+ char tmpbuf[MAX_NSTR_STRLEN];
+ int len;
+ if (do_negotiated_strings)
+ len = -1;
+ else
+ len = strlcpy(tmpbuf, protocol_version >= 30 ? "md5" : "md4", MAX_NSTR_STRLEN);
+ recv_negotiate_str(f_in, &valid_checksums, tmpbuf, len);
+ }
+
+ if (valid_compressions.saw) {
+ char tmpbuf[MAX_NSTR_STRLEN];
+ int len;
+ if (do_negotiated_strings)
+ len = -1;
+ else
+ len = strlcpy(tmpbuf, "zlib", MAX_NSTR_STRLEN);
+ recv_negotiate_str(f_in, &valid_compressions, tmpbuf, len);
+ }
+
+ /* If the other side is too old to negotiate, the above steps just made sure that
+ * the env didn't disallow the old algorithm. Mark things as non-negotiated. */
+ if (!do_negotiated_strings)
+ valid_checksums.negotiated_nni = valid_compressions.negotiated_nni = NULL;
+}
void setup_protocol(int f_out,int f_in)
{
+ assert(file_extra_cnt == 0);
+ assert(EXTRA64_CNT == 2 || EXTRA64_CNT == 1);
+
+ /* All int64 values must be set first so that they are guaranteed to be
+ * aligned for direct int64-pointer memory access. */
+ if (preserve_atimes)
+ atimes_ndx = (file_extra_cnt += EXTRA64_CNT);
+ if (preserve_crtimes)
+ crtimes_ndx = (file_extra_cnt += EXTRA64_CNT);
+ if (am_sender) /* This is most likely in the file_extras64 union as well. */
+ pathname_ndx = (file_extra_cnt += PTR_EXTRA_CNT);
+ else
+ depth_ndx = ++file_extra_cnt;
+ if (preserve_uid)
+ uid_ndx = ++file_extra_cnt;
+ if (preserve_gid)
+ gid_ndx = ++file_extra_cnt;
+ if (preserve_acls && !am_sender)
+ acls_ndx = ++file_extra_cnt;
+ if (preserve_xattrs)
+ xattrs_ndx = ++file_extra_cnt;
+
+ if (am_server)
+ set_allow_inc_recurse();
+
if (remote_protocol == 0) {
+ if (am_server && !local_server)
+ check_sub_protocol();
if (!read_batch)
write_int(f_out, protocol_version);
remote_protocol = read_int(f_in);
protocol_version = remote_protocol;
}
if (read_batch && remote_protocol > protocol_version) {
- rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n",
+ rprintf(FERROR, "The protocol version in the batch file is too new (%d > %d).\n",
remote_protocol, protocol_version);
exit_cleanup(RERR_PROTOCOL);
}
- if (verbose > 3) {
+ if (DEBUG_GTE(PROTO, 1)) {
rprintf(FINFO, "(%s) Protocol versions: remote=%d, negotiated=%d\n",
am_server? "Server" : "Client", remote_protocol, protocol_version);
}
if (remote_protocol < MIN_PROTOCOL_VERSION
|| remote_protocol > MAX_PROTOCOL_VERSION) {
rprintf(FERROR,"protocol version mismatch -- is your shell clean?\n");
- rprintf(FERROR,"(see the rsync man page for an explanation)\n");
+ rprintf(FERROR,"(see the rsync manpage for an explanation)\n");
exit_cleanup(RERR_PROTOCOL);
}
if (remote_protocol < OLD_PROTOCOL_VERSION) {
PROTOCOL_VERSION, am_server? "Server" : "Client");
exit_cleanup(RERR_PROTOCOL);
}
+ if (read_batch)
+ check_batch_flags();
+
+ if (!saw_stderr_opt && protocol_version <= 28 && am_server)
+ msgs2stderr = 0; /* The client side may not have stderr setup for us. */
+
+#ifndef SUPPORT_PREALLOCATION
+ if (preallocate_files && !am_sender) {
+ rprintf(FERROR, "preallocation is not supported on this %s\n",
+ am_server ? "Server" : "Client");
+ exit_cleanup(RERR_SYNTAX);
+ }
+#endif
+
+ if (protocol_version < 30) {
+ if (append_mode == 1)
+ append_mode = 2;
+ if (preserve_acls && !local_server) {
+ rprintf(FERROR,
+ "--acls requires protocol 30 or higher"
+ " (negotiated %d).\n",
+ protocol_version);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ if (preserve_xattrs && !local_server) {
+ rprintf(FERROR,
+ "--xattrs requires protocol 30 or higher"
+ " (negotiated %d).\n",
+ protocol_version);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ }
+
+ if (delete_mode && !(delete_before+delete_during+delete_after)) {
+ if (protocol_version < 30)
+ delete_before = 1;
+ else
+ delete_during = 1;
+ }
if (protocol_version < 29) {
if (fuzzy_basis) {
rprintf(FERROR,
- "--fuzzy requires protocol 29 or higher"
- " (negotiated %d).\n",
- protocol_version);
+ "--fuzzy requires protocol 29 or higher"
+ " (negotiated %d).\n",
+ protocol_version);
exit_cleanup(RERR_PROTOCOL);
}
if (basis_dir_cnt && inplace) {
rprintf(FERROR,
- "%s with --inplace requires protocol 29 or higher"
- " (negotiated %d).\n",
- dest_option, protocol_version);
+ "%s with --inplace requires protocol 29 or higher"
+ " (negotiated %d).\n",
+ alt_dest_opt(0), protocol_version);
exit_cleanup(RERR_PROTOCOL);
}
if (basis_dir_cnt > 1) {
rprintf(FERROR,
- "Using more than one %s option requires protocol"
- " 29 or higher (negotiated %d).\n",
- dest_option, protocol_version);
+ "Using more than one %s option requires protocol"
+ " 29 or higher (negotiated %d).\n",
+ alt_dest_opt(0), protocol_version);
exit_cleanup(RERR_PROTOCOL);
}
if (prune_empty_dirs) {
rprintf(FERROR,
- "--prune-empty-dirs requires protocol 29 or higher"
- " (negotiated %d).\n",
- protocol_version);
+ "--prune-empty-dirs requires protocol 29 or higher"
+ " (negotiated %d).\n",
+ protocol_version);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ } else if (protocol_version >= 30) {
+ if (am_server) {
+ compat_flags = allow_inc_recurse ? CF_INC_RECURSE : 0;
+#ifdef CAN_SET_SYMLINK_TIMES
+ compat_flags |= CF_SYMLINK_TIMES;
+#endif
+#ifdef ICONV_OPTION
+ compat_flags |= CF_SYMLINK_ICONV;
+#endif
+ if (strchr(client_info, 'f') != NULL)
+ compat_flags |= CF_SAFE_FLIST;
+ if (strchr(client_info, 'x') != NULL)
+ compat_flags |= CF_AVOID_XATTR_OPTIM;
+ if (strchr(client_info, 'C') != NULL)
+ compat_flags |= CF_CHKSUM_SEED_FIX;
+ if (strchr(client_info, 'I') != NULL)
+ compat_flags |= CF_INPLACE_PARTIAL_DIR;
+ if (strchr(client_info, 'u') != NULL)
+ compat_flags |= CF_ID0_NAMES;
+ if (strchr(client_info, 'v') != NULL) {
+ do_negotiated_strings = 1;
+ compat_flags |= CF_VARINT_FLIST_FLAGS;
+ }
+ if (strchr(client_info, 'V') != NULL) { /* Support a pre-release 'V' that got superseded */
+ if (!write_batch)
+ compat_flags |= CF_VARINT_FLIST_FLAGS;
+ write_byte(f_out, compat_flags);
+ } else
+ write_varint(f_out, compat_flags);
+ } else { /* read_varint() is compatible with the older write_byte() when the 0x80 bit isn't on. */
+ compat_flags = read_varint(f_in);
+ if (compat_flags & CF_VARINT_FLIST_FLAGS)
+ do_negotiated_strings = 1;
+ }
+ /* The inc_recurse var MUST be set to 0 or 1. */
+ inc_recurse = compat_flags & CF_INC_RECURSE ? 1 : 0;
+ want_xattr_optim = protocol_version >= 31 && !(compat_flags & CF_AVOID_XATTR_OPTIM);
+ proper_seed_order = compat_flags & CF_CHKSUM_SEED_FIX ? 1 : 0;
+ xfer_flags_as_varint = compat_flags & CF_VARINT_FLIST_FLAGS ? 1 : 0;
+ xmit_id0_names = compat_flags & CF_ID0_NAMES ? 1 : 0;
+ if (!xfer_flags_as_varint && preserve_crtimes) {
+ fprintf(stderr, "Both rsync versions must be at least 3.2.0 for --crtimes.\n");
exit_cleanup(RERR_PROTOCOL);
}
+ if (am_sender) {
+ receiver_symlink_times = am_server
+ ? strchr(client_info, 'L') != NULL
+ : !!(compat_flags & CF_SYMLINK_TIMES);
+ }
+#ifdef CAN_SET_SYMLINK_TIMES
+ else
+ receiver_symlink_times = 1;
+#endif
+#ifdef ICONV_OPTION
+ sender_symlink_iconv = iconv_opt && (am_server
+ ? strchr(client_info, 's') != NULL
+ : !!(compat_flags & CF_SYMLINK_ICONV));
+#endif
+ if (inc_recurse && !allow_inc_recurse) {
+ /* This should only be able to happen in a batch. */
+ fprintf(stderr,
+ "Incompatible options specified for inc-recursive %s.\n",
+ read_batch ? "batch file" : "connection");
+ exit_cleanup(RERR_SYNTAX);
+ }
+ use_safe_inc_flist = (compat_flags & CF_SAFE_FLIST) || protocol_version >= 31;
+ need_messages_from_generator = 1;
+ if (compat_flags & CF_INPLACE_PARTIAL_DIR)
+ inplace_partial = 1;
+#ifdef CAN_SET_SYMLINK_TIMES
+ } else if (!am_sender) {
+ receiver_symlink_times = 1;
+#endif
+ }
+
+ if (read_batch)
+ do_negotiated_strings = 0;
+
+ if (need_unsorted_flist && (!am_sender || inc_recurse))
+ unsort_ndx = ++file_extra_cnt;
+
+ if (partial_dir && *partial_dir != '/' && (!am_server || local_server)) {
+ int rflags = FILTRULE_NO_PREFIXES | FILTRULE_DIRECTORY;
+ if (!am_sender || protocol_version >= 30)
+ rflags |= FILTRULE_PERISHABLE;
+ parse_filter_str(&filter_list, partial_dir, rule_template(rflags), 0);
+ }
+
+
+#ifdef ICONV_OPTION
+ if (protect_args && files_from) {
+ if (am_sender)
+ filesfrom_convert = filesfrom_host && ic_send != (iconv_t)-1;
+ else
+ filesfrom_convert = !filesfrom_host && ic_recv != (iconv_t)-1;
}
+#endif
+
+ negotiate_the_strings(f_in, f_out);
if (am_server) {
if (!checksum_seed)
- checksum_seed = time(NULL);
+ checksum_seed = time(NULL) ^ (getpid() << 6);
write_int(f_out, checksum_seed);
} else {
checksum_seed = read_int(f_in);
}
+
+ parse_checksum_choice(1); /* Sets file_sum_nni & xfer_sum_nni */
+ parse_compress_choice(1); /* Sets do_compression */
+
+ /* TODO in the future allow this algorithm to be chosen somehow, but it can't get too
+ * long or the size starts to cause a problem in the xattr abbrev/non-abbrev code. */
+ xattr_sum_nni = parse_csum_name(NULL, 0);
+ xattr_sum_len = csum_len_for_type(xattr_sum_nni->num, 0);
+
+ if (write_batch && !am_server)
+ write_batch_shell_file();
+
+ init_flist();
+}
+
+void output_daemon_greeting(int f_out, int am_client)
+{
+ char tmpbuf[MAX_NSTR_STRLEN];
+ int our_sub = get_subprotocol_version();
+
+ get_default_nno_list(&valid_auth_checksums, tmpbuf, MAX_NSTR_STRLEN, '\0');
+
+ io_printf(f_out, "@RSYNCD: %d.%d %s\n", protocol_version, our_sub, tmpbuf);
+
+ if (am_client && DEBUG_GTE(NSTR, 2))
+ rprintf(FINFO, "Client %s list (on client): %s\n", valid_auth_checksums.type, tmpbuf);
+}
+
+void negotiate_daemon_auth(int f_out, int am_client)
+{
+ char tmpbuf[MAX_NSTR_STRLEN];
+ int save_am_server = am_server;
+ int md4_is_old = 0;
+
+ if (!am_client)
+ am_server = 1;
+
+ if (daemon_auth_choices)
+ strlcpy(tmpbuf, daemon_auth_choices, MAX_NSTR_STRLEN);
+ else {
+ strlcpy(tmpbuf, protocol_version >= 30 ? "md5" : "md4", MAX_NSTR_STRLEN);
+ md4_is_old = 1;
+ }
+
+ if (am_client) {
+ recv_negotiate_str(-1, &valid_auth_checksums, tmpbuf, strlen(tmpbuf));
+ if (DEBUG_GTE(NSTR, 1)) {
+ rprintf(FINFO, "Client negotiated %s: %s\n", valid_auth_checksums.type,
+ valid_auth_checksums.negotiated_nni->name);
+ }
+ } else {
+ if (!parse_negotiate_str(&valid_auth_checksums, tmpbuf)) {
+ get_default_nno_list(&valid_auth_checksums, tmpbuf, MAX_NSTR_STRLEN, '\0');
+ io_printf(f_out, "@ERROR: your client does not support one of our daemon-auth checksums: %s\n",
+ tmpbuf);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+ }
+ am_server = save_am_server;
+ if (md4_is_old && valid_auth_checksums.negotiated_nni->num == CSUM_MD4)
+ valid_auth_checksums.negotiated_nni->num = CSUM_MD4_OLD;
+}
+
+int get_subprotocol_version()
+{
+#if SUBPROTOCOL_VERSION != 0
+ return protocol_version < PROTOCOL_VERSION ? 0 : SUBPROTOCOL_VERSION;
+#else
+ return 0;
+#endif
}
projects / platform / upstream / rsync.git / blobdiff