#include "private-libwebsockets.h"
-int lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len)
+int
+lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len)
{
- unsigned int n;
+ int m;
switch (wsi->mode) {
case LWSCM_WSCL_WAITING_PROXY_REPLY:
case LWSCM_WSCL_WAITING_SERVER_REPLY:
case LWSCM_WSCL_WAITING_EXTENSION_CONNECT:
case LWSCM_WS_CLIENT:
- for (n = 0; n < len; n++)
+ while (len) {
+ /*
+ * we were accepting input but now we stopped doing so
+ */
+ if (!(wsi->rxflow_change_to & LWS_RXFLOW_ALLOW)) {
+ lwsl_debug("%s: caching %ld\n", __func__, (long)len);
+ lws_rxflow_cache(wsi, *buf, 0, len);
+ return 0;
+ }
+ if (wsi->u.ws.rx_draining_ext) {
+ m = lws_rx_sm(wsi, 0);
+ if (m < 0)
+ return -1;
+ continue;
+ }
+ /* account for what we're using in rxflow buffer */
+ if (wsi->rxflow_buffer)
+ wsi->rxflow_pos++;
+
if (lws_client_rx_sm(wsi, *(*buf)++)) {
- lwsl_debug("client_rx_sm failed\n");
- return 1;
+ lwsl_debug("client_rx_sm exited\n");
+ return -1;
}
+ len--;
+ }
+ lwsl_debug("%s: finished with %ld\n", __func__, (long)len);
return 0;
default:
break;
}
+
return 0;
}
-int lws_client_socket_service(struct lws_context *context,
- struct lws *wsi, struct lws_pollfd *pollfd)
+LWS_VISIBLE LWS_EXTERN void
+lws_client_http_body_pending(struct lws *wsi, int something_left_to_send)
{
- char *p = (char *)&context->serv_buf[0];
+ wsi->client_http_body_pending = !!something_left_to_send;
+}
+
+int
+lws_client_socket_service(struct lws_context *context, struct lws *wsi,
+ struct lws_pollfd *pollfd)
+{
+ struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
+ char *p = (char *)&pt->serv_buf[0];
+ const char *cce = NULL;
unsigned char c;
- int n, len;
+ char *sb = p;
+ int n = 0, len = 0;
+#if defined(LWS_WITH_SOCKS5)
+ char conn_mode = 0, pending_timeout = 0;
+#endif
switch (wsi->mode) {
* timeout protection set in client-handshake.c
*/
- if (lws_client_connect_2(wsi) == NULL) {
+ if (!lws_client_connect_2(wsi)) {
/* closed */
lwsl_client("closed\n");
return -1;
/* either still pending connection, or changed mode */
return 0;
+#if defined(LWS_WITH_SOCKS5)
+ /* SOCKS Greeting Reply */
+ case LWSCM_WSCL_WAITING_SOCKS_GREETING_REPLY:
+
+ /* handle proxy hung up on us */
+
+ if (pollfd->revents & LWS_POLLHUP) {
+
+ lwsl_warn("SOCKS connection %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ return 0;
+ }
+
+ n = recv(wsi->desc.sockfd, sb, context->pt_serv_buf_size, 0);
+ if (n < 0) {
+ if (LWS_ERRNO == LWS_EAGAIN) {
+ lwsl_debug("SOCKS read returned EAGAIN..."
+ "retrying\n");
+ return 0;
+ }
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ lwsl_err("ERROR reading from SOCKS socket\n");
+ return 0;
+ }
+
+ /* processing greeting reply */
+ if (pt->serv_buf[0] == SOCKS_VERSION_5
+ && pt->serv_buf[1] == SOCKS_AUTH_NO_AUTH)
+ {
+ lwsl_client("%s\n", "SOCKS greeting reply received "
+ "- No Authentication Method");
+ socks_generate_msg(wsi, SOCKS_MSG_CONNECT, (size_t *)&len);
+
+ conn_mode = LWSCM_WSCL_WAITING_SOCKS_CONNECT_REPLY;
+ pending_timeout = PENDING_TIMEOUT_AWAITING_SOCKS_CONNECT_REPLY;
+ lwsl_client("%s\n", "Sending SOCKS connect command");
+ }
+ else if (pt->serv_buf[0] == SOCKS_VERSION_5
+ && pt->serv_buf[1] == SOCKS_AUTH_USERNAME_PASSWORD)
+ {
+ lwsl_client("%s\n", "SOCKS greeting reply received "
+ "- User Name Password Method");
+ socks_generate_msg(wsi, SOCKS_MSG_USERNAME_PASSWORD,
+ (size_t *)&len);
+
+ conn_mode = LWSCM_WSCL_WAITING_SOCKS_AUTH_REPLY;
+ pending_timeout = PENDING_TIMEOUT_AWAITING_SOCKS_AUTH_REPLY;
+ lwsl_client("%s\n", "Sending SOCKS user/password");
+ }
+ else
+ {
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ lwsl_err("ERROR SOCKS greeting reply failed, method "
+ "code: %d\n", pt->serv_buf[1]);
+ return 0;
+ }
+
+ n = send(wsi->desc.sockfd, (char *)pt->serv_buf, len,
+ MSG_NOSIGNAL);
+ if (n < 0) {
+ lwsl_debug("ERROR writing socks command to socks proxy "
+ "socket\n");
+ return 0;
+ }
+
+ lws_set_timeout(wsi, pending_timeout, AWAITING_TIMEOUT);
+ wsi->mode = conn_mode;
+
+ break;
+ /* SOCKS auth Reply */
+ case LWSCM_WSCL_WAITING_SOCKS_AUTH_REPLY:
+
+ /* handle proxy hung up on us */
+
+ if (pollfd->revents & LWS_POLLHUP) {
+
+ lwsl_warn("SOCKS connection %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ return 0;
+ }
+
+ n = recv(wsi->desc.sockfd, sb, context->pt_serv_buf_size, 0);
+ if (n < 0) {
+ if (LWS_ERRNO == LWS_EAGAIN) {
+ lwsl_debug("SOCKS read returned EAGAIN... "
+ "retrying\n");
+ return 0;
+ }
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ lwsl_err("ERROR reading from socks socket\n");
+ return 0;
+ }
+
+ /* processing auth reply */
+ if (pt->serv_buf[0] == SOCKS_SUBNEGOTIATION_VERSION_1
+ && pt->serv_buf[1] == SOCKS_SUBNEGOTIATION_STATUS_SUCCESS)
+ {
+ lwsl_client("%s\n", "SOCKS password reply recieved - "
+ "successful");
+ socks_generate_msg(wsi, SOCKS_MSG_CONNECT, (size_t *)&len);
+
+ conn_mode = LWSCM_WSCL_WAITING_SOCKS_CONNECT_REPLY;
+ pending_timeout =
+ PENDING_TIMEOUT_AWAITING_SOCKS_CONNECT_REPLY;
+ lwsl_client("%s\n", "Sending SOCKS connect command");
+ }
+ else
+ {
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ lwsl_err("ERROR : SOCKS user/password reply failed, "
+ "error code: %d\n", pt->serv_buf[1]);
+ return 0;
+ }
+
+ n = send(wsi->desc.sockfd, (char *)pt->serv_buf, len,
+ MSG_NOSIGNAL);
+ if (n < 0) {
+ lwsl_debug("ERROR writing connect command to SOCKS "
+ "socket\n");
+ return 0;
+ }
+
+ lws_set_timeout(wsi, pending_timeout, AWAITING_TIMEOUT);
+ wsi->mode = conn_mode;
+
+ break;
+
+ /* SOCKS connect command Reply */
+ case LWSCM_WSCL_WAITING_SOCKS_CONNECT_REPLY:
+
+ /* handle proxy hung up on us */
+
+ if (pollfd->revents & LWS_POLLHUP) {
+
+ lwsl_warn("SOCKS connection %p (fd=%d) dead\n",
+ (void *)wsi, pollfd->fd);
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ return 0;
+ }
+
+ n = recv(wsi->desc.sockfd, sb, context->pt_serv_buf_size, 0);
+ if (n < 0) {
+ if (LWS_ERRNO == LWS_EAGAIN) {
+ lwsl_debug("SOCKS read returned EAGAIN... "
+ "retrying\n");
+ return 0;
+ }
+
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ lwsl_err("ERROR reading from socks socket\n");
+ return 0;
+ }
+
+ /* processing connect reply */
+ if (pt->serv_buf[0] == SOCKS_VERSION_5
+ && pt->serv_buf[1] == SOCKS_REQUEST_REPLY_SUCCESS)
+ {
+ lwsl_client("%s\n", "SOCKS connect reply recieved - "
+ "successful");
+ }
+ else
+ {
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ lwsl_err("ERROR SOCKS connect reply failed, error "
+ "code: %d\n", pt->serv_buf[1]);
+ return 0;
+ }
+
+ /* free stash since we are done with it */
+ lws_free_set_NULL(wsi->u.hdr.stash);
+
+ if (lws_hdr_simple_create(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS,
+ wsi->vhost->socks_proxy_address))
+ goto bail3;
+ wsi->c_port = wsi->vhost->socks_proxy_port;
+
+ /* clear his proxy connection timeout */
+
+ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+
+ goto start_ws_hanshake;
+#endif
case LWSCM_WSCL_WAITING_PROXY_REPLY:
/* handle proxy hung up on us */
return 0;
}
- n = recv(wsi->sock, (char *)context->serv_buf,
- sizeof(context->serv_buf), 0);
+ n = recv(wsi->desc.sockfd, sb, context->pt_serv_buf_size, 0);
if (n < 0) {
-
if (LWS_ERRNO == LWS_EAGAIN) {
lwsl_debug("Proxy read returned EAGAIN... retrying\n");
return 0;
return 0;
}
- context->serv_buf[13] = '\0';
- if (strcmp((char *)context->serv_buf, "HTTP/1.0 200 ") &&
- strcmp((char *)context->serv_buf, "HTTP/1.1 200 ")
- ) {
+ pt->serv_buf[13] = '\0';
+ if (strcmp(sb, "HTTP/1.0 200 ") &&
+ strcmp(sb, "HTTP/1.1 200 ")) {
lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
- lwsl_err("ERROR proxy: %s\n", context->serv_buf);
+ lwsl_err("ERROR proxy: %s\n", sb);
return 0;
}
/*
* we are under PENDING_TIMEOUT_SENT_CLIENT_HANDSHAKE
* timeout protection set in client-handshake.c
- */
-
- /*
+ *
* take care of our lws_callback_on_writable
* happening at a time when there's no real connection yet
*/
+#if defined(LWS_WITH_SOCKS5)
+start_ws_hanshake:
+#endif
if (lws_change_pollfd(wsi, LWS_POLLOUT, 0))
return -1;
- lws_libev_io(wsi, LWS_EV_STOP | LWS_EV_WRITE);
#ifdef LWS_OPENSSL_SUPPORT
/* we can retry this... just cook the SSL BIO the first time */
if (wsi->use_ssl && !wsi->ssl) {
-#if defined(CYASSL_SNI_HOST_NAME) || defined(WOLFSSL_SNI_HOST_NAME) || defined(SSL_CTRL_SET_TLSEXT_HOSTNAME)
- const char *hostname = lws_hdr_simple_ptr(wsi,
- _WSI_TOKEN_CLIENT_HOST);
-#endif
-
- wsi->ssl = SSL_new(context->ssl_client_ctx);
-#ifndef USE_WOLFSSL
- SSL_set_mode(wsi->ssl,
- SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
-#endif
- /*
- * use server name indication (SNI), if supported,
- * when establishing connection
- */
-#ifdef USE_WOLFSSL
-#ifdef USE_OLD_CYASSL
-#ifdef CYASSL_SNI_HOST_NAME
- CyaSSL_UseSNI(wsi->ssl, CYASSL_SNI_HOST_NAME,
- hostname, strlen(hostname));
-#endif
-#else
-#ifdef WOLFSSL_SNI_HOST_NAME
- wolfSSL_UseSNI(wsi->ssl, WOLFSSL_SNI_HOST_NAME,
- hostname, strlen(hostname));
-#endif
-#endif
-#else
-#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
- SSL_set_tlsext_host_name(wsi->ssl, hostname);
-#endif
-#endif
-
-#ifdef USE_WOLFSSL
- /*
- * wolfSSL/CyaSSL does certificate verification differently
- * from OpenSSL.
- * If we should ignore the certificate, we need to set
- * this before SSL_new and SSL_connect is called.
- * Otherwise the connect will simply fail with error
- * code -155
- */
-#ifdef USE_OLD_CYASSL
- if (wsi->use_ssl == 2)
- CyaSSL_set_verify(wsi->ssl,
- SSL_VERIFY_NONE, NULL);
-#else
- if (wsi->use_ssl == 2)
- wolfSSL_set_verify(wsi->ssl,
- SSL_VERIFY_NONE, NULL);
-#endif
-#endif /* USE_WOLFSSL */
-
- wsi->client_bio =
- BIO_new_socket(wsi->sock, BIO_NOCLOSE);
- SSL_set_bio(wsi->ssl, wsi->client_bio, wsi->client_bio);
-
-#ifdef USE_WOLFSSL
-#ifdef USE_OLD_CYASSL
- CyaSSL_set_using_nonblock(wsi->ssl, 1);
-#else
- wolfSSL_set_using_nonblock(wsi->ssl, 1);
-#endif
-#else
- BIO_set_nbio(wsi->client_bio, 1); /* nonblocking */
-#endif
-
- SSL_set_ex_data(wsi->ssl,
- openssl_websocket_private_data_index,
- context);
+ if (lws_ssl_client_bio_create(wsi))
+ return -1;
}
if (wsi->use_ssl) {
- lws_latency_pre(context, wsi);
- n = SSL_connect(wsi->ssl);
- lws_latency(context, wsi,
- "SSL_connect LWSCM_WSCL_ISSUE_HANDSHAKE",
- n, n > 0);
-
+ n = lws_ssl_client_connect1(wsi);
+ if (!n)
+ return 0;
if (n < 0) {
- n = SSL_get_error(wsi->ssl, n);
-
- if (n == SSL_ERROR_WANT_READ)
- goto some_wait;
-
- if (n == SSL_ERROR_WANT_WRITE) {
- /*
- * wants us to retry connect due to
- * state of the underlying ssl layer...
- * but since it may be stalled on
- * blocked write, no incoming data may
- * arrive to trigger the retry.
- * Force (possibly many times if the SSL
- * state persists in returning the
- * condition code, but other sockets
- * are getting serviced inbetweentimes)
- * us to get called back when writable.
- */
-
- lwsl_info(
- "SSL_connect WANT_WRITE... retrying\n");
- lws_callback_on_writable(wsi);
-some_wait:
- wsi->mode = LWSCM_WSCL_WAITING_SSL;
-
- return 0; /* no error */
- }
- n = -1;
- }
-
- if (n <= 0) {
- /*
- * retry if new data comes until we
- * run into the connection timeout or win
- */
-
- n = ERR_get_error();
- if (n != SSL_ERROR_NONE) {
- lwsl_err("SSL connect error %lu: %s\n",
- n,
- ERR_error_string(n,
- (char *)context->serv_buf));
- return 0;
- }
+ cce = "lws_ssl_client_connect1 failed";
+ goto bail3;
}
} else
wsi->ssl = NULL;
case LWSCM_WSCL_WAITING_SSL:
if (wsi->use_ssl) {
-
- if (wsi->mode == LWSCM_WSCL_WAITING_SSL) {
- lws_latency_pre(context, wsi);
- n = SSL_connect(wsi->ssl);
- lws_latency(context, wsi,
- "SSL_connect LWSCM_WSCL_WAITING_SSL",
- n, n > 0);
-
- if (n < 0) {
- n = SSL_get_error(wsi->ssl, n);
-
- if (n == SSL_ERROR_WANT_READ)
- goto some_wait;
-
- if (n == SSL_ERROR_WANT_WRITE) {
- /*
- * wants us to retry connect due to
- * state of the underlying ssl layer...
- * but since it may be stalled on
- * blocked write, no incoming data may
- * arrive to trigger the retry.
- * Force (possibly many times if the SSL
- * state persists in returning the
- * condition code, but other sockets
- * are getting serviced inbetweentimes)
- * us to get called back when writable.
- */
-
- lwsl_info("SSL_connect WANT_WRITE... retrying\n");
- lws_callback_on_writable(wsi);
-
- goto some_wait;
- }
- n = -1;
- }
-
- if (n <= 0) {
- /*
- * retry if new data comes until we
- * run into the connection timeout or win
- */
- n = ERR_get_error();
- if (n != SSL_ERROR_NONE) {
- lwsl_err("SSL connect error %lu: %s\n",
- n, ERR_error_string(n,
- (char *)context->serv_buf));
- return 0;
- }
- }
- }
-
- #ifndef USE_WOLFSSL
- /*
- * See comment above about wolfSSL certificate
- * verification
- */
- lws_latency_pre(context, wsi);
- n = SSL_get_verify_result(wsi->ssl);
- lws_latency(context, wsi,
- "SSL_get_verify_result LWS_CONNMODE..HANDSHAKE",
- n, n > 0);
-
- if (n != X509_V_OK) {
- if ((n == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT ||
- n == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) && wsi->use_ssl == 2) {
- lwsl_notice("accepting self-signed certificate\n");
- } else {
- lwsl_err("server's cert didn't look good, X509_V_ERR = %d: %s\n",
- n, ERR_error_string(n, (char *)context->serv_buf));
- lws_close_free_wsi(wsi,
- LWS_CLOSE_STATUS_NOSTATUS);
- return 0;
- }
+ n = lws_ssl_client_connect2(wsi);
+ if (!n)
+ return 0;
+ if (n < 0) {
+ cce = "lws_ssl_client_connect2 failed";
+ goto bail3;
}
-#endif /* USE_WOLFSSL */
} else
wsi->ssl = NULL;
#endif
wsi->mode = LWSCM_WSCL_ISSUE_HANDSHAKE2;
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_CLIENT_HS_SEND,
- AWAITING_TIMEOUT);
+ context->timeout_secs);
/* fallthru */
case LWSCM_WSCL_ISSUE_HANDSHAKE2:
p = lws_generate_client_handshake(wsi, p);
if (p == NULL) {
+ if (wsi->mode == LWSCM_RAW)
+ return 0;
+
lwsl_err("Failed to generate handshake for client\n");
lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
return 0;
lws_latency_pre(context, wsi);
- n = lws_ssl_capable_write(wsi, context->serv_buf,
- p - (char *)context->serv_buf);
+ n = lws_ssl_capable_write(wsi, (unsigned char *)sb, p - sb);
lws_latency(context, wsi, "send lws_issue_raw", n,
- n == p - (char *)context->serv_buf);
+ n == p - sb);
switch (n) {
case LWS_SSL_CAPABLE_ERROR:
lwsl_debug("ERROR writing to client socket\n");
break;
}
+ if (wsi->client_http_body_pending) {
+ wsi->mode = LWSCM_WSCL_ISSUE_HTTP_BODY;
+ lws_set_timeout(wsi, PENDING_TIMEOUT_CLIENT_ISSUE_PAYLOAD,
+ context->timeout_secs);
+ /* user code must ask for writable callback */
+ break;
+ }
+
+ goto client_http_body_sent;
+
+ case LWSCM_WSCL_ISSUE_HTTP_BODY:
+ if (wsi->client_http_body_pending) {
+ lws_set_timeout(wsi, PENDING_TIMEOUT_CLIENT_ISSUE_PAYLOAD,
+ context->timeout_secs);
+ /* user code must ask for writable callback */
+ break;
+ }
+client_http_body_sent:
wsi->u.hdr.parser_state = WSI_TOKEN_NAME_PART;
wsi->u.hdr.lextable_pos = 0;
wsi->mode = LWSCM_WSCL_WAITING_SERVER_REPLY;
lws_set_timeout(wsi, PENDING_TIMEOUT_AWAITING_SERVER_RESPONSE,
- AWAITING_TIMEOUT);
+ context->timeout_secs);
break;
case LWSCM_WSCL_WAITING_SERVER_REPLY:
lwsl_debug("Server connection %p (fd=%d) dead\n",
(void *)wsi, pollfd->fd);
-
+ cce = "Peer hung up";
goto bail3;
}
lws_latency(context, wsi, "send lws_issue_raw", n,
n == 1);
switch (n) {
+ case 0:
case LWS_SSL_CAPABLE_ERROR:
+ cce = "read failed";
goto bail3;
case LWS_SSL_CAPABLE_MORE_SERVICE:
return 0;
bail3:
lwsl_info("closing conn at LWS_CONNMODE...SERVER_REPLY\n");
+ if (cce)
+ lwsl_info("reason: %s\n", cce);
+ wsi->protocol->callback(wsi,
+ LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
+ wsi->user_space, (void *)cce, cce ? strlen(cce) : 0);
+ wsi->already_did_cce = 1;
lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
return -1;
return 0;
}
-
/*
* In-place str to lower case
*/
strtolower(char *s)
{
while (*s) {
+#ifdef LWS_PLAT_OPTEE
+ int tolower_optee(int c);
+ *s = tolower_optee((int)*s);
+#else
*s = tolower((int)*s);
+#endif
s++;
}
}
+int LWS_WARN_UNUSED_RESULT
+lws_http_transaction_completed_client(struct lws *wsi)
+{
+ lwsl_debug("%s: wsi %p\n", __func__, wsi);
+ /* if we can't go back to accept new headers, drop the connection */
+ if (wsi->u.http.connection_type != HTTP_CONNECTION_KEEP_ALIVE) {
+ lwsl_info("%s: %p: close connection\n", __func__, wsi);
+ return 1;
+ }
+
+ /* we don't support chained client connections yet */
+ return 1;
+
+ /* otherwise set ourselves up ready to go again */
+ wsi->state = LWSS_CLIENT_HTTP_ESTABLISHED;
+ wsi->mode = LWSCM_HTTP_CLIENT_ACCEPTED;
+ wsi->u.http.content_length = 0;
+ wsi->hdr_parsing_completed = 0;
+
+ /* He asked for it to stay alive indefinitely */
+ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+
+ /*
+ * As client, nothing new is going to come until we ask for it
+ * we can drop the ah, if any
+ */
+ if (wsi->u.hdr.ah) {
+ wsi->u.hdr.ah->rxpos = wsi->u.hdr.ah->rxlen;
+ lws_header_table_detach(wsi, 0);
+ }
+
+ /* If we're (re)starting on headers, need other implied init */
+ wsi->u.hdr.ues = URIES_IDLE;
+
+ lwsl_info("%s: %p: keep-alive await new transaction\n", __func__, wsi);
+
+ return 0;
+}
+
+LWS_VISIBLE LWS_EXTERN unsigned int
+lws_http_client_http_response(struct lws *wsi)
+{
+ if (!wsi->u.http.ah)
+ return 0;
+
+ return wsi->u.http.ah->http_response;
+}
+
int
lws_client_interpret_server_handshake(struct lws *wsi)
{
- struct lws_context *context = wsi->context;
+ int n, len, okay = 0, port = 0, ssl = 0;
int close_reason = LWS_CLOSE_STATUS_PROTOCOL_ERR;
- int n, len, okay = 0, isErrorCodeReceived = 0;
- const char *pc;
- char *p;
+ struct lws_context *context = wsi->context;
+ const char *pc, *prot, *ads = NULL, *path, *cce = NULL;
+ struct allocated_headers *ah = NULL;
+ char *p, *q;
+ char new_path[300];
#ifndef LWS_NO_EXTENSIONS
+ struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
+ char *sb = (char *)&pt->serv_buf[0];
+ const struct lws_ext_options *opts;
const struct lws_extension *ext;
char ext_name[128];
- const char *c;
+ const char *c, *a;
+ char ignore;
int more = 1;
void *v;
#endif
+ ah = wsi->u.hdr.ah;
+ if (!wsi->do_ws) {
+ /* we are being an http client...
+ */
+ lws_union_transition(wsi, LWSCM_HTTP_CLIENT_ACCEPTED);
+ wsi->state = LWSS_CLIENT_HTTP_ESTABLISHED;
+ wsi->u.http.ah = ah;
+ ah->http_response = 0;
+ }
+
/*
* well, what the server sent looked reasonable for syntax.
* Now let's confirm it sent all the necessary headers
+ *
+ * http (non-ws) client will expect something like this
+ *
+ * HTTP/1.0.200
+ * server:.libwebsockets
+ * content-type:.text/html
+ * content-length:.17703
+ * set-cookie:.test=LWS_1456736240_336776_COOKIE;Max-Age=360000
+ *
+ *
+ *
*/
- if (lws_hdr_total_length(wsi, WSI_TOKEN_ACCEPT) == 0) {
- lwsl_info("no ACCEPT\n");
- p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP);
- isErrorCodeReceived = 1;
+ wsi->u.http.connection_type = HTTP_CONNECTION_KEEP_ALIVE;
+ p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP);
+ if (wsi->do_ws && !p) {
+ lwsl_info("no URI\n");
+ cce = "HS: URI missing";
goto bail3;
}
-
- p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP);
if (!p) {
+ p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP1_0);
+ wsi->u.http.connection_type = HTTP_CONNECTION_CLOSE;
+ }
+ if (!p) {
+ cce = "HS: URI missing";
lwsl_info("no URI\n");
goto bail3;
}
+ n = atoi(p);
+ if (ah)
+ ah->http_response = n;
+
+ if (n == 301 || n == 302 || n == 303 || n == 307 || n == 308) {
+ p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_LOCATION);
+ if (!p) {
+ cce = "HS: Redirect code but no Location";
+ goto bail3;
+ }
+
+ /* Relative reference absolute path */
+ if (p[0] == '/')
+ {
+#ifdef LWS_OPENSSL_SUPPORT
+ ssl = wsi->use_ssl;
+#endif
+ ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS);
+ port = wsi->c_port;
+ path = p + 1; /* +1 as lws_client_reset expects leading / to be omitted */
+ }
+ /* Absolute (Full) URI */
+ else if (strchr(p, ':'))
+ {
+ if (lws_parse_uri(p, &prot, &ads, &port, &path)) {
+ cce = "HS: URI did not parse";
+ goto bail3;
+ }
+
+ if (!strcmp(prot, "wss") || !strcmp(prot, "https"))
+ ssl = 1;
+ }
+ /* Relative reference relative path */
+ else
+ {
+ /* This doesn't try to calculate an absolute path, that will be left to the server */
+#ifdef LWS_OPENSSL_SUPPORT
+ ssl = wsi->use_ssl;
+#endif
+ ads = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_PEER_ADDRESS);
+ port = wsi->c_port;
+ path = new_path + 1; /* +1 as lws_client_reset expects leading / to be omitted */
+ strncpy(new_path, lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_URI), sizeof(new_path));
+ new_path[sizeof(new_path) - 1] = '\0';
+ q = strrchr(new_path, '/');
+ if (q)
+ {
+ strncpy(q + 1, p, sizeof(new_path) - (q - new_path) - 1);
+ new_path[sizeof(new_path) - 1] = '\0';
+ }
+ else
+ {
+ path = p;
+ }
+ }
+
+#ifdef LWS_OPENSSL_SUPPORT
+ if (wsi->use_ssl && !ssl) {
+ cce = "HS: Redirect attempted SSL downgrade";
+ goto bail3;
+ }
+#endif
+
+ if (!lws_client_reset(&wsi, ssl, ads, port, path, ads)) {
+ /* there are two ways to fail out with NULL return...
+ * simple, early problem where the wsi is intact, or
+ * we went through with the reconnect attempt and the
+ * wsi is already closed. In the latter case, the wsi
+ * has beet set to NULL additionally.
+ */
+ lwsl_err("Redirect failed\n");
+ cce = "HS: Redirect failed";
+ if (wsi)
+ goto bail3;
+
+ return 1;
+ }
+ return 0;
+ }
+
+ if (!wsi->do_ws) {
+ if (n != 200 && n != 201 && n != 304 && n != 401) {
+ lwsl_notice("Connection failed with code %d\n", n);
+ cce = "HS: Server unrecognized response code";
+ goto bail2;
+ }
+
+#ifdef LWS_WITH_HTTP_PROXY
+ wsi->perform_rewrite = 0;
+ if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE)) {
+ if (!strncmp(lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE),
+ "text/html", 9))
+ wsi->perform_rewrite = 1;
+ }
+#endif
+
+ /* allocate the per-connection user memory (if any) */
+ if (lws_ensure_user_space(wsi)) {
+ lwsl_err("Problem allocating wsi user mem\n");
+ cce = "HS: OOM";
+ goto bail2;
+ }
+
+ /* he may choose to send us stuff in chunked transfer-coding */
+ wsi->chunked = 0;
+ wsi->chunk_remaining = 0; /* ie, next thing is chunk size */
+ if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_TRANSFER_ENCODING)) {
+ wsi->chunked = !strcmp(lws_hdr_simple_ptr(wsi,
+ WSI_TOKEN_HTTP_TRANSFER_ENCODING),
+ "chunked");
+ /* first thing is hex, after payload there is crlf */
+ wsi->chunk_parser = ELCP_HEX;
+ }
+
+ if (lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_CONTENT_LENGTH)) {
+ wsi->u.http.content_length =
+ atoll(lws_hdr_simple_ptr(wsi,
+ WSI_TOKEN_HTTP_CONTENT_LENGTH));
+ lwsl_notice("%s: incoming content length %llu\n", __func__,
+ (unsigned long long)wsi->u.http.content_length);
+ wsi->u.http.content_remain = wsi->u.http.content_length;
+ } else /* can't do 1.1 without a content length or chunked */
+ if (!wsi->chunked)
+ wsi->u.http.connection_type = HTTP_CONNECTION_CLOSE;
+
+ /*
+ * we seem to be good to go, give client last chance to check
+ * headers and OK it
+ */
+ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH,
+ wsi->user_space, NULL, 0)) {
+
+ cce = "HS: disallowed by client filter";
+ goto bail2;
+ }
+
+ /* clear his proxy connection timeout */
+ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+
+ wsi->rxflow_change_to = LWS_RXFLOW_ALLOW;
+
+ /* call him back to inform him he is up */
+ if (wsi->protocol->callback(wsi,
+ LWS_CALLBACK_ESTABLISHED_CLIENT_HTTP,
+ wsi->user_space, NULL, 0)) {
+ cce = "HS: disallowed at ESTABLISHED";
+ goto bail3;
+ }
+
+ /* free up his parsing allocations */
+ lws_header_table_detach(wsi, 0);
+
+ lwsl_notice("%s: client connection up\n", __func__);
+
+ return 0;
+ }
+
+ if (lws_hdr_total_length(wsi, WSI_TOKEN_ACCEPT) == 0) {
+ lwsl_info("no ACCEPT\n");
+ cce = "HS: ACCEPT missing";
+ goto bail3;
+ }
+
if (p && strncmp(p, "101", 3)) {
lwsl_warn(
"lws_client_handshake: got bad HTTP response '%s'\n", p);
+ cce = "HS: ws upgrade response not 101";
goto bail3;
}
p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_UPGRADE);
if (!p) {
lwsl_info("no UPGRADE\n");
+ cce = "HS: UPGRADE missing";
goto bail3;
}
strtolower(p);
if (strcmp(p, "websocket")) {
lwsl_warn(
"lws_client_handshake: got bad Upgrade header '%s'\n", p);
+ cce = "HS: Upgrade to something other than websocket";
goto bail3;
}
p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_CONNECTION);
if (!p) {
lwsl_info("no Connection hdr\n");
+ cce = "HS: CONNECTION missing";
goto bail3;
}
strtolower(p);
if (strcmp(p, "upgrade")) {
lwsl_warn("lws_client_int_s_hs: bad header %s\n", p);
+ cce = "HS: UPGRADE malformed";
goto bail3;
}
len = lws_hdr_total_length(wsi, WSI_TOKEN_PROTOCOL);
if (!len) {
-
lwsl_info("lws_client_int_s_hs: WSI_TOKEN_PROTOCOL is null\n");
/*
* no protocol name to work from,
* default to first protocol
*/
- wsi->protocol = &context->protocols[0];
+ n = 0;
+ wsi->protocol = &wsi->vhost->protocols[0];
goto check_extensions;
}
if (!okay) {
lwsl_err("lws_client_int_s_hs: got bad protocol %s\n", p);
+ cce = "HS: PROTOCOL malformed";
goto bail2;
}
*/
n = 0;
wsi->protocol = NULL;
- while (context->protocols[n].callback && !wsi->protocol) {
- if (strcmp(p, context->protocols[n].name) == 0) {
- wsi->protocol = &context->protocols[n];
+ while (wsi->vhost->protocols[n].callback && !wsi->protocol) {
+ if (strcmp(p, wsi->vhost->protocols[n].name) == 0) {
+ wsi->protocol = &wsi->vhost->protocols[n];
break;
}
n++;
if (wsi->protocol == NULL) {
lwsl_err("lws_client_int_s_hs: fail protocol %s\n", p);
+ cce = "HS: Cannot match protocol";
goto bail2;
}
-
check_extensions:
+ /*
+ * stitch protocol choice into the vh protocol linked list
+ * We always insert ourselves at the start of the list
+ *
+ * X <-> B
+ * X <-> pAn <-> pB
+ */
+ //lwsl_err("%s: pre insert vhost start wsi %p, that wsi prev == %p\n",
+ // __func__,
+ // wsi->vhost->same_vh_protocol_list[n],
+ // wsi->same_vh_protocol_prev);
+ wsi->same_vh_protocol_prev = /* guy who points to us */
+ &wsi->vhost->same_vh_protocol_list[n];
+ wsi->same_vh_protocol_next = /* old first guy is our next */
+ wsi->vhost->same_vh_protocol_list[n];
+ /* we become the new first guy */
+ wsi->vhost->same_vh_protocol_list[n] = wsi;
+
+ if (wsi->same_vh_protocol_next)
+ /* old first guy points back to us now */
+ wsi->same_vh_protocol_next->same_vh_protocol_prev =
+ &wsi->same_vh_protocol_next;
+
#ifndef LWS_NO_EXTENSIONS
/* instantiate the accepted extensions */
if (!lws_hdr_total_length(wsi, WSI_TOKEN_EXTENSIONS)) {
- lwsl_ext("no client extenstions allowed by server\n");
+ lwsl_ext("no client extensions allowed by server\n");
goto check_accept;
}
* and go through matching them or identifying bogons
*/
- if (lws_hdr_copy(wsi, (char *)context->serv_buf,
- sizeof(context->serv_buf), WSI_TOKEN_EXTENSIONS) < 0) {
+ if (lws_hdr_copy(wsi, sb, context->pt_serv_buf_size, WSI_TOKEN_EXTENSIONS) < 0) {
lwsl_warn("ext list from server failed to copy\n");
+ cce = "HS: EXT: list too big";
goto bail2;
}
- c = (char *)context->serv_buf;
+ c = sb;
n = 0;
+ ignore = 0;
+ a = NULL;
while (more) {
- if (*c && (*c != ',' && *c != ' ' && *c != '\t')) {
+ if (*c && (*c != ',' && *c != '\t')) {
+ if (*c == ';') {
+ ignore = 1;
+ if (!a)
+ a = c + 1;
+ }
+ if (ignore || *c == ' ') {
+ c++;
+ continue;
+ }
+
ext_name[n] = *c++;
if (n < sizeof(ext_name) - 1)
n++;
continue;
}
ext_name[n] = '\0';
+ ignore = 0;
if (!*c)
more = 0;
else {
/* check we actually support it */
- lwsl_ext("checking client ext %s\n", ext_name);
+ lwsl_notice("checking client ext %s\n", ext_name);
n = 0;
- ext = lws_get_ctx(wsi)->extensions;
+ ext = wsi->vhost->extensions;
while (ext && ext->callback) {
if (strcmp(ext_name, ext->name)) {
ext++;
}
n = 1;
- lwsl_ext("instantiating client ext %s\n", ext_name);
+ lwsl_notice("instantiating client ext %s\n", ext_name);
/* instantiate the extension on this conn */
- wsi->active_extensions_user[
- wsi->count_active_extensions] =
- lws_zalloc(ext->per_session_data_size);
- if (wsi->active_extensions_user[
- wsi->count_active_extensions] == NULL) {
- lwsl_err("Out of mem\n");
+ wsi->active_extensions[wsi->count_act_ext] = ext;
+
+ /* allow him to construct his ext instance */
+
+ if (ext->callback(lws_get_context(wsi), ext, wsi,
+ LWS_EXT_CB_CLIENT_CONSTRUCT,
+ (void *)&wsi->act_ext_user[wsi->count_act_ext],
+ (void *)&opts, 0)) {
+ lwsl_notice(" ext %s failed construction\n", ext_name);
+ ext++;
+ continue;
+ }
+
+ /*
+ * allow the user code to override ext defaults if it
+ * wants to
+ */
+ ext_name[0] = '\0';
+ if (user_callback_handle_rxflow(wsi->protocol->callback,
+ wsi, LWS_CALLBACK_WS_EXT_DEFAULTS,
+ (char *)ext->name, ext_name,
+ sizeof(ext_name))) {
+ cce = "HS: EXT: failed setting defaults";
goto bail2;
}
- wsi->active_extensions[
- wsi->count_active_extensions] = ext;
- /* allow him to construct his context */
+ if (ext_name[0] &&
+ lws_ext_parse_options(ext, wsi, wsi->act_ext_user[
+ wsi->count_act_ext], opts, ext_name,
+ strlen(ext_name))) {
+ lwsl_err("%s: unable to parse user defaults '%s'",
+ __func__, ext_name);
+ cce = "HS: EXT: failed parsing defaults";
+ goto bail2;
+ }
- ext->callback(lws_get_ctx(wsi), ext, wsi,
- LWS_EXT_CALLBACK_CLIENT_CONSTRUCT,
- wsi->active_extensions_user[
- wsi->count_active_extensions],
- NULL, 0);
+ /*
+ * give the extension the server options
+ */
+ if (a && lws_ext_parse_options(ext, wsi,
+ wsi->act_ext_user[wsi->count_act_ext],
+ opts, a, c - a)) {
+ lwsl_err("%s: unable to parse remote def '%s'",
+ __func__, a);
+ cce = "HS: EXT: failed parsing options";
+ goto bail2;
+ }
+
+ if (ext->callback(lws_get_context(wsi), ext, wsi,
+ LWS_EXT_CB_OPTION_CONFIRM,
+ wsi->act_ext_user[wsi->count_act_ext],
+ NULL, 0)) {
+ lwsl_err("%s: ext %s rejects server options %s",
+ __func__, ext->name, a);
+ cce = "HS: EXT: Rejects server options";
+ goto bail2;
+ }
- wsi->count_active_extensions++;
+ wsi->count_act_ext++;
ext++;
}
if (n == 0) {
lwsl_warn("Unknown ext '%s'!\n", ext_name);
+ cce = "HS: EXT: unknown ext";
goto bail2;
}
+ a = NULL;
n = 0;
}
p = lws_hdr_simple_ptr(wsi, WSI_TOKEN_ACCEPT);
if (strcmp(p, wsi->u.hdr.ah->initial_handshake_hash_base64)) {
- lwsl_warn("lws_client_int_s_hs: accept %s wrong vs %s\n", p,
+ lwsl_warn("lws_client_int_s_hs: accept '%s' wrong vs '%s'\n", p,
wsi->u.hdr.ah->initial_handshake_hash_base64);
+ cce = "HS: Accept hash wrong";
goto bail2;
}
/* allocate the per-connection user memory (if any) */
if (lws_ensure_user_space(wsi)) {
lwsl_err("Problem allocating wsi user mem\n");
+ cce = "HS: OOM";
goto bail2;
}
* we seem to be good to go, give client last chance to check
* headers and OK it
*/
- wsi->protocol->callback(wsi,
- LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH,
- wsi->user_space, NULL, 0);
+ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_FILTER_PRE_ESTABLISH,
+ wsi->user_space, NULL, 0)) {
+ cce = "HS: Rejected by filter cb";
+ goto bail2;
+ }
/* clear his proxy connection timeout */
-
lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
/* free up his parsing allocations */
-
- lws_free(wsi->u.hdr.ah);
+ lws_header_table_detach(wsi, 0);
lws_union_transition(wsi, LWSCM_WS_CLIENT);
wsi->state = LWSS_ESTABLISHED;
+ lws_restart_ws_ping_pong_timer(wsi);
wsi->rxflow_change_to = LWS_RXFLOW_ALLOW;
* size mentioned in the protocol definition. If 0 there, then
* use a big default for compatibility
*/
-
n = wsi->protocol->rx_buffer_size;
if (!n)
- n = LWS_MAX_SOCKET_IO_BUF;
- n += LWS_SEND_BUFFER_PRE_PADDING + LWS_SEND_BUFFER_POST_PADDING;
- wsi->u.ws.rx_user_buffer = lws_malloc(n);
- if (!wsi->u.ws.rx_user_buffer) {
+ n = context->pt_serv_buf_size;
+ n += LWS_PRE;
+ wsi->u.ws.rx_ubuf = lws_malloc(n + 4 /* 0x0000ffff zlib */);
+ if (!wsi->u.ws.rx_ubuf) {
lwsl_err("Out of Mem allocating rx buffer %d\n", n);
+ cce = "HS: OOM";
goto bail2;
}
+ wsi->u.ws.rx_ubuf_alloc = n;
lwsl_info("Allocating client RX buffer %d\n", n);
- if (setsockopt(wsi->sock, SOL_SOCKET, SO_SNDBUF, (const char *)&n,
+#if !defined(LWS_WITH_ESP32)
+ if (setsockopt(wsi->desc.sockfd, SOL_SOCKET, SO_SNDBUF, (const char *)&n,
sizeof n)) {
lwsl_warn("Failed to set SNDBUF to %d", n);
+ cce = "HS: SO_SNDBUF failed";
goto bail3;
}
+#endif
lwsl_debug("handshake OK for protocol %s\n", wsi->protocol->name);
/* call him back to inform him he is up */
- wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_ESTABLISHED,
- wsi->user_space, NULL, 0);
+ if (wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_ESTABLISHED,
+ wsi->user_space, NULL, 0)) {
+ cce = "HS: Rejected at CLIENT_ESTABLISHED";
+ goto bail3;
+ }
#ifndef LWS_NO_EXTENSIONS
/*
* inform all extensions, not just active ones since they
* already know
*/
-
- ext = context->extensions;
+ ext = wsi->vhost->extensions;
while (ext && ext->callback) {
v = NULL;
- for (n = 0; n < wsi->count_active_extensions; n++)
+ for (n = 0; n < wsi->count_act_ext; n++)
if (wsi->active_extensions[n] == ext)
- v = wsi->active_extensions_user[n];
+ v = wsi->act_ext_user[n];
ext->callback(context, ext, wsi,
- LWS_EXT_CALLBACK_ANY_WSI_ESTABLISHED, v, NULL, 0);
+ LWS_EXT_CB_ANY_WSI_ESTABLISHED, v, NULL, 0);
ext++;
}
#endif
return 0;
bail3:
- lws_free_set_NULL(wsi->u.ws.rx_user_buffer);
close_reason = LWS_CLOSE_STATUS_NOSTATUS;
bail2:
- if (wsi->protocol) {
- if (isErrorCodeReceived && p) {
- wsi->protocol->callback(wsi,
- LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
- wsi->user_space, p,
- (unsigned int)strlen(p));
- } else {
- wsi->protocol->callback(wsi,
- LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
- wsi->user_space, NULL, 0);
- }
- }
+ if (wsi->protocol)
+ wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
+ wsi->user_space, (void *)cce,
+ (unsigned int)strlen(cce));
+ wsi->already_did_cce = 1;
lwsl_info("closing connection due to bail2 connection error\n");
- /* free up his parsing allocations */
- lws_free_set_NULL(wsi->u.hdr.ah);
+ /* closing will free up his parsing allocations */
lws_close_free_wsi(wsi, close_reason);
return 1;
{
char buf[128], hash[20], key_b64[40], *p = pkt;
struct lws_context *context = wsi->context;
+ const char *meth;
int n;
#ifndef LWS_NO_EXTENSIONS
const struct lws_extension *ext;
int ext_count = 0;
#endif
+ const char *pp = lws_hdr_simple_ptr(wsi,
+ _WSI_TOKEN_CLIENT_SENT_PROTOCOLS);
+
+ meth = lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_METHOD);
+ if (!meth) {
+ meth = "GET";
+ wsi->do_ws = 1;
+ } else {
+ wsi->do_ws = 0;
+ }
+
+ if (!strcmp(meth, "RAW")) {
+ lws_set_timeout(wsi, NO_PENDING_TIMEOUT, 0);
+ lwsl_notice("client transition to raw\n");
+
+ if (pp) {
+ const struct lws_protocols *pr;
+
+ pr = lws_vhost_name_to_protocol(wsi->vhost, pp);
+
+ if (!pr) {
+ lwsl_err("protocol %s not enabled on vhost\n",
+ pp);
+ return NULL;
+ }
+
+ lws_bind_protocol(wsi, pr);
+ }
+
+ if ((wsi->protocol->callback)(wsi,
+ LWS_CALLBACK_RAW_ADOPT,
+ wsi->user_space, NULL, 0))
+ return NULL;
+
+ wsi->u.hdr.ah->rxpos = wsi->u.hdr.ah->rxlen;
+ lws_union_transition(wsi, LWSCM_RAW);
+ lws_header_table_detach(wsi, 1);
- /*
- * create the random key
- */
- n = lws_get_random(context, hash, 16);
- if (n != 16) {
- lwsl_err("Unable to read from random dev %s\n",
- SYSTEM_RANDOM_FILEPATH);
- lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
return NULL;
}
- lws_b64_encode_string(hash, 16, key_b64, sizeof(key_b64));
+ if (wsi->do_ws) {
+ /*
+ * create the random key
+ */
+ n = lws_get_random(context, hash, 16);
+ if (n != 16) {
+ lwsl_err("Unable to read from random dev %s\n",
+ SYSTEM_RANDOM_FILEPATH);
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS);
+ return NULL;
+ }
+
+ lws_b64_encode_string(hash, 16, key_b64, sizeof(key_b64));
+ }
/*
- * 00 example client handshake
- *
- * GET /socket.io/websocket HTTP/1.1
- * Upgrade: WebSocket
- * Connection: Upgrade
- * Host: 127.0.0.1:9999
- * Origin: http://127.0.0.1
- * Sec-WebSocket-Key1: 1 0 2#0W 9 89 7 92 ^
- * Sec-WebSocket-Key2: 7 7Y 4328 B2v[8(z1
- * Cookie: socketio=websocket
- *
- * (Á®Ä0¶†≥
- *
* 04 example client handshake
*
* GET /chat HTTP/1.1
* Sec-WebSocket-Version: 4
*/
- p += sprintf(p, "GET %s HTTP/1.1\x0d\x0a",
+ p += sprintf(p, "%s %s HTTP/1.1\x0d\x0a", meth,
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_URI));
p += sprintf(p, "Pragma: no-cache\x0d\x0a"
p += sprintf(p, "Host: %s\x0d\x0a",
lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_HOST));
- p += sprintf(p, "Upgrade: websocket\x0d\x0a"
- "Connection: Upgrade\x0d\x0a"
- "Sec-WebSocket-Key: ");
- strcpy(p, key_b64);
- p += strlen(key_b64);
- p += sprintf(p, "\x0d\x0a");
- if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN))
- p += sprintf(p, "Origin: http://%s\x0d\x0a",
- lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN));
- if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS))
- p += sprintf(p, "Sec-WebSocket-Protocol: %s\x0d\x0a",
- lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS));
+ if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN)) {
+ if (lws_check_opt(context->options, LWS_SERVER_OPTION_JUST_USE_RAW_ORIGIN))
+ p += sprintf(p, "Origin: %s\x0d\x0a",
+ lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN));
+ else
+ p += sprintf(p, "Origin: http://%s\x0d\x0a",
+ lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_ORIGIN));
+ }
+
+ if (wsi->do_ws) {
+ p += sprintf(p, "Upgrade: websocket\x0d\x0a"
+ "Connection: Upgrade\x0d\x0a"
+ "Sec-WebSocket-Key: ");
+ strcpy(p, key_b64);
+ p += strlen(key_b64);
+ p += sprintf(p, "\x0d\x0a");
+ if (lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS))
+ p += sprintf(p, "Sec-WebSocket-Protocol: %s\x0d\x0a",
+ lws_hdr_simple_ptr(wsi, _WSI_TOKEN_CLIENT_SENT_PROTOCOLS));
- /* tell the server what extensions we could support */
+ /* tell the server what extensions we could support */
- p += sprintf(p, "Sec-WebSocket-Extensions: ");
#ifndef LWS_NO_EXTENSIONS
- ext = context->extensions;
- while (ext && ext->callback) {
+ ext = wsi->vhost->extensions;
+ while (ext && ext->callback) {
+ n = lws_ext_cb_all_exts(context, wsi,
+ LWS_EXT_CB_CHECK_OK_TO_PROPOSE_EXTENSION,
+ (char *)ext->name, 0);
+ if (n) { /* an extension vetos us */
+ lwsl_ext("ext %s vetoed\n", (char *)ext->name);
+ ext++;
+ continue;
+ }
+ n = wsi->vhost->protocols[0].callback(wsi,
+ LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED,
+ wsi->user_space, (char *)ext->name, 0);
- n = lws_ext_cb_all_exts(context, wsi,
- LWS_EXT_CALLBACK_CHECK_OK_TO_PROPOSE_EXTENSION,
- (char *)ext->name, 0);
- if (n) { /* an extension vetos us */
- lwsl_ext("ext %s vetoed\n", (char *)ext->name);
- ext++;
- continue;
- }
+ /*
+ * zero return from callback means
+ * go ahead and allow the extension,
+ * it's what we get if the callback is
+ * unhandled
+ */
- n = context->protocols[0].callback(wsi,
- LWS_CALLBACK_CLIENT_CONFIRM_EXTENSION_SUPPORTED,
- wsi->user_space, (char *)ext->name, 0);
+ if (n) {
+ ext++;
+ continue;
+ }
- /*
- * zero return from callback means
- * go ahead and allow the extension,
- * it's what we get if the callback is
- * unhandled
- */
+ /* apply it */
+
+ if (ext_count)
+ *p++ = ',';
+ else
+ p += sprintf(p, "Sec-WebSocket-Extensions: ");
+ p += sprintf(p, "%s", ext->client_offer);
+ ext_count++;
- if (n) {
ext++;
- continue;
}
-
- /* apply it */
-
if (ext_count)
- *p++ = ',';
- p += sprintf(p, "%s", ext->name);
- ext_count++;
-
- ext++;
- }
+ p += sprintf(p, "\x0d\x0a");
#endif
- p += sprintf(p, "\x0d\x0a");
- if (wsi->ietf_spec_revision)
- p += sprintf(p, "Sec-WebSocket-Version: %d\x0d\x0a",
- wsi->ietf_spec_revision);
+ if (wsi->ietf_spec_revision)
+ p += sprintf(p, "Sec-WebSocket-Version: %d\x0d\x0a",
+ wsi->ietf_spec_revision);
- /* give userland a chance to append, eg, cookies */
+ /* prepare the expected server accept response */
- context->protocols[0].callback(wsi,
- LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
- NULL, &p,
- (pkt + sizeof(context->serv_buf)) - p - 12);
+ key_b64[39] = '\0'; /* enforce composed length below buf sizeof */
+ n = sprintf(buf, "%s258EAFA5-E914-47DA-95CA-C5AB0DC85B11", key_b64);
- p += sprintf(p, "\x0d\x0a");
+ lws_SHA1((unsigned char *)buf, n, (unsigned char *)hash);
- /* prepare the expected server accept response */
+ lws_b64_encode_string(hash, 20,
+ wsi->u.hdr.ah->initial_handshake_hash_base64,
+ sizeof(wsi->u.hdr.ah->initial_handshake_hash_base64));
+ }
- key_b64[39] = '\0'; /* enforce composed length below buf sizeof */
- n = sprintf(buf, "%s258EAFA5-E914-47DA-95CA-C5AB0DC85B11", key_b64);
+ /* give userland a chance to append, eg, cookies */
- lws_SHA1((unsigned char *)buf, n, (unsigned char *)hash);
+ wsi->protocol->callback(wsi, LWS_CALLBACK_CLIENT_APPEND_HANDSHAKE_HEADER,
+ wsi->user_space, &p, (pkt + context->pt_serv_buf_size) - p - 12);
- lws_b64_encode_string(hash, 20,
- wsi->u.hdr.ah->initial_handshake_hash_base64,
- sizeof(wsi->u.hdr.ah->initial_handshake_hash_base64));
+ p += sprintf(p, "\x0d\x0a");
return p;
}
projects / platform / upstream / libwebsockets.git / blobdiff