mirror of
https://gitlab.xiph.org/xiph/icecast-server.git
synced 2025-02-02 15:07:36 -05:00
Ouch. Serious bug found by Ricardo Galli.
When the cond var is signalled it will wake up a thread. If all the connection handler threads are handling connections, the signal will be ignored and clients will 'pend' until another client causes the to signal again. We have to check to see if there are more pending connections before waiting on the signal again. svn path=/trunk/icecast/; revision=3178
This commit is contained in:
Jack Moffitt
parent
785cfefe3e
commit
235a2639cc
365
src/connection.c
365
src/connection.c
@ -310,161 +310,140 @@ static void *_handle_connection(void *arg)
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if (global.running != ICE_RUNNING) break;
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/* grab a connection and set the socket to blocking */
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con = _get_connection();
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while (con = _get_connection()) {
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stats_event_inc(NULL, "connections");
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stats_event_inc(NULL, "connections");
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sock_set_blocking(con->sock, SOCK_BLOCK);
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sock_set_blocking(con->sock, SOCK_BLOCK);
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/* fill header with the http header */
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if (util_read_header(con->sock, header, 4096) == 0) {
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/* either we didn't get a complete header, or we timed out */
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connection_close(con);
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continue;
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}
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parser = httpp_create_parser();
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httpp_initialize(parser, NULL);
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if (httpp_parse(parser, header, strlen(header))) {
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/* handle the connection or something */
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if (strcmp("ICE", httpp_getvar(parser, HTTPP_VAR_PROTOCOL)) != 0 && strcmp("HTTP", httpp_getvar(parser, HTTPP_VAR_PROTOCOL)) != 0) {
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printf("DEBUG: bad protocol\n");
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/* fill header with the http header */
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if (util_read_header(con->sock, header, 4096) == 0) {
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/* either we didn't get a complete header, or we timed out */
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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if (parser->req_type == httpp_req_source) {
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char *contenttype;
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printf("DEBUG: source logging in\n");
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stats_event_inc(NULL, "source_connections");
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parser = httpp_create_parser();
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httpp_initialize(parser, NULL);
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if (httpp_parse(parser, header, strlen(header))) {
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/* handle the connection or something */
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if (strcmp((httpp_getvar(parser, "ice-password") != NULL) ? httpp_getvar(parser, "ice-password") : "", (config_get_config()->source_password != NULL) ? config_get_config()->source_password : "") != 0) {
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printf("DEBUG: bad password\n");
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INFO1("Source (%s) attempted to login with bad password", httpp_getvar(parser, HTTPP_VAR_URI));
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if (strcmp("ICE", httpp_getvar(parser, HTTPP_VAR_PROTOCOL)) != 0 && strcmp("HTTP", httpp_getvar(parser, HTTPP_VAR_PROTOCOL)) != 0) {
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printf("DEBUG: bad protocol\n");
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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/* check to make sure this source has
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** a unique mountpoint
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*/
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if (parser->req_type == httpp_req_source) {
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char *contenttype;
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avl_tree_rlock(global.source_tree);
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if (source_find_mount(httpp_getvar(parser, HTTPP_VAR_URI)) != NULL) {
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printf("Source attempted to connect with an already used mountpoint.\n");
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INFO1("Source tried to log in as %s, but is already used", httpp_getvar(parser, HTTPP_VAR_URI));
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connection_close(con);
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httpp_destroy(parser);
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avl_tree_unlock(global.source_tree);
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continue;
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}
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avl_tree_unlock(global.source_tree);
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/* check to make sure this source wouldn't
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** be over the limit
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*/
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global_lock();
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if (global.sources >= config_get_config()->source_limit) {
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printf("TOO MANY SOURCE, KICKING THIS ONE\n");
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INFO1("Source (%s) logged in, but there are too many sources", httpp_getvar(parser, HTTPP_VAR_URI));
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connection_close(con);
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httpp_destroy(parser);
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global_unlock();
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continue;
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}
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global.sources++;
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global_unlock();
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stats_event_inc(NULL, "sources");
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contenttype = httpp_getvar(parser, "content-type");
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if (contenttype != NULL) {
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format_type_t format = format_get_type(contenttype);
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if(format < 0) {
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WARN1("Content-type \"%s\" not supported, dropping source", contenttype);
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continue;
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}
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else
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source = source_create(con, parser, httpp_getvar(parser, HTTPP_VAR_URI), format);
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}
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else {
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WARN0("No content-type header, cannot handle source");
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continue;
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}
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source->shutdown_rwlock = &_source_shutdown_rwlock;
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sock_set_blocking(con->sock, SOCK_NONBLOCK);
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printf("DEBUG: source logging in\n");
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stats_event_inc(NULL, "source_connections");
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thread_create("Source Thread", source_main, (void *)source, THREAD_DETACHED);
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continue;
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} else if (parser->req_type == httpp_req_stats) {
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printf("DEBUG: stats connection...\n");
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stats_event_inc(NULL, "stats_connections");
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if (strcmp((httpp_getvar(parser, "ice-password") != NULL) ? httpp_getvar(parser, "ice-password") : "", (config_get_config()->source_password != NULL) ? config_get_config()->source_password : "") != 0) {
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printf("DEBUG: bad password\n");
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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stats_event_inc(NULL, "stats");
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/* create stats connection and create stats handler thread */
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stats = (stats_connection_t *)malloc(sizeof(stats_connection_t));
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stats->parser = parser;
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stats->con = con;
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thread_create("Stats Connection", stats_connection, (void *)stats, THREAD_DETACHED);
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continue;
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} else if (parser->req_type == httpp_req_play || parser->req_type == httpp_req_get) {
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printf("DEBUG: client coming in...\n");
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/* make a client */
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client = client_create(con, parser);
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stats_event_inc(NULL, "client_connections");
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/* there are several types of HTTP GET clients
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** media clients, which are looking for a source (eg, URI = /stream.ogg)
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** stats clients, which are looking for /stats.xml
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** and director server authorizers, which are looking for /GUID-xxxxxxxx (where xxxxxx is the GUID in question
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** we need to handle the latter two before the former, as the latter two
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** aren't subject to the limits.
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*/
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// TODO: add GUID-xxxxxx
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if (strcmp(httpp_getvar(parser, HTTPP_VAR_URI), "/stats.xml") == 0) {
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printf("sending stats.xml\n");
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stats_sendxml(client);
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continue;
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}
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global_lock();
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if (global.clients >= config_get_config()->client_limit) {
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if (parser->req_type == httpp_req_get) {
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client->respcode = 504;
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bytes = sock_write(client->con->sock, "HTTP/1.0 504 Server Full\r\nContent-Type: text/html\r\n\r\n"\
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"<b>The server is already full. Try again later.</b>\r\n");
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if (bytes > 0) client->con->sent_bytes = bytes;
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if (strcmp((httpp_getvar(parser, "ice-password") != NULL) ? httpp_getvar(parser, "ice-password") : "", (config_get_config()->source_password != NULL) ? config_get_config()->source_password : "") != 0) {
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printf("DEBUG: bad password\n");
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INFO1("Source (%s) attempted to login with bad password", httpp_getvar(parser, HTTPP_VAR_URI));
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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client_destroy(client);
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global_unlock();
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continue;
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}
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global_unlock();
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avl_tree_rlock(global.source_tree);
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source = source_find_mount(httpp_getvar(parser, HTTPP_VAR_URI));
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if (source) {
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printf("DEBUG: source found for client\n");
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/* check to make sure this source has
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** a unique mountpoint
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*/
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avl_tree_rlock(global.source_tree);
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if (source_find_mount(httpp_getvar(parser, HTTPP_VAR_URI)) != NULL) {
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printf("Source attempted to connect with an already used mountpoint.\n");
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INFO1("Source tried to log in as %s, but is already used", httpp_getvar(parser, HTTPP_VAR_URI));
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connection_close(con);
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httpp_destroy(parser);
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avl_tree_unlock(global.source_tree);
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continue;
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}
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avl_tree_unlock(global.source_tree);
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/* check to make sure this source wouldn't
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** be over the limit
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*/
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global_lock();
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if (global.sources >= config_get_config()->source_limit) {
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printf("TOO MANY SOURCE, KICKING THIS ONE\n");
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INFO1("Source (%s) logged in, but there are too many sources", httpp_getvar(parser, HTTPP_VAR_URI));
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connection_close(con);
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httpp_destroy(parser);
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global_unlock();
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continue;
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}
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global.sources++;
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global_unlock();
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stats_event_inc(NULL, "sources");
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contenttype = httpp_getvar(parser, "content-type");
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if (contenttype != NULL) {
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format_type_t format = format_get_type(contenttype);
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if (format < 0) {
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WARN1("Content-type \"%s\" not supported, dropping source", contenttype);
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continue;
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} else {
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source = source_create(con, parser, httpp_getvar(parser, HTTPP_VAR_URI), format);
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}
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} else {
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WARN0("No content-type header, cannot handle source");
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continue;
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}
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source->shutdown_rwlock = &_source_shutdown_rwlock;
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sock_set_blocking(con->sock, SOCK_NONBLOCK);
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thread_create("Source Thread", source_main, (void *)source, THREAD_DETACHED);
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continue;
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} else if (parser->req_type == httpp_req_stats) {
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printf("DEBUG: stats connection...\n");
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stats_event_inc(NULL, "stats_connections");
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if (strcmp((httpp_getvar(parser, "ice-password") != NULL) ? httpp_getvar(parser, "ice-password") : "", (config_get_config()->source_password != NULL) ? config_get_config()->source_password : "") != 0) {
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printf("DEBUG: bad password\n");
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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stats_event_inc(NULL, "stats");
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/* create stats connection and create stats handler thread */
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stats = (stats_connection_t *)malloc(sizeof(stats_connection_t));
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stats->parser = parser;
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stats->con = con;
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thread_create("Stats Connection", stats_connection, (void *)stats, THREAD_DETACHED);
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continue;
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} else if (parser->req_type == httpp_req_play || parser->req_type == httpp_req_get) {
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printf("DEBUG: client coming in...\n");
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/* make a client */
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client = client_create(con, parser);
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stats_event_inc(NULL, "client_connections");
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/* there are several types of HTTP GET clients
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** media clients, which are looking for a source (eg, URI = /stream.ogg)
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** stats clients, which are looking for /stats.xml
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** and director server authorizers, which are looking for /GUID-xxxxxxxx (where xxxxxx is the GUID in question
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** we need to handle the latter two before the former, as the latter two
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** aren't subject to the limits.
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*/
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// TODO: add GUID-xxxxxx
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if (strcmp(httpp_getvar(parser, HTTPP_VAR_URI), "/stats.xml") == 0) {
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printf("sending stats.xml\n");
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stats_sendxml(client);
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continue;
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}
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global_lock();
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if (global.clients >= config_get_config()->client_limit) {
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if (parser->req_type == httpp_req_get) {
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@ -477,60 +456,80 @@ static void *_handle_connection(void *arg)
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global_unlock();
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continue;
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}
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global.clients++;
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global_unlock();
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if (parser->req_type == httpp_req_get) {
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client->respcode = 200;
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sock_write(client->con->sock, "HTTP/1.0 200 OK\r\nContent-Type: application/x-ogg\r\n");
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/* iterate through source http headers and send to client */
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avl_tree_rlock(source->parser->vars);
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node = avl_get_first(source->parser->vars);
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while (node) {
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var = (http_var_t *)node->key;
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if (strcasecmp(var->name, "ice-password") && !strncasecmp("ice-", var->name, 4)) {
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printf("DEBUG: sending %s: %s\n", var->name, var->value);
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sock_write(client->con->sock, "%s: %s\r\n", var->name, var->value);
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}
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node = avl_get_next(node);
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}
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avl_tree_unlock(source->parser->vars);
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sock_write(client->con->sock, "\r\n");
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avl_tree_rlock(global.source_tree);
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source = source_find_mount(httpp_getvar(parser, HTTPP_VAR_URI));
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if (source) {
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printf("DEBUG: source found for client\n");
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sock_set_blocking(client->con->sock, SOCK_NONBLOCK);
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global_lock();
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if (global.clients >= config_get_config()->client_limit) {
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if (parser->req_type == httpp_req_get) {
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client->respcode = 504;
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bytes = sock_write(client->con->sock, "HTTP/1.0 504 Server Full\r\nContent-Type: text/html\r\n\r\n"\
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"<b>The server is already full. Try again later.</b>\r\n");
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if (bytes > 0) client->con->sent_bytes = bytes;
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}
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client_destroy(client);
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global_unlock();
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continue;
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}
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global.clients++;
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global_unlock();
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if (parser->req_type == httpp_req_get) {
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client->respcode = 200;
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sock_write(client->con->sock, "HTTP/1.0 200 OK\r\nContent-Type: application/x-ogg\r\n");
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/* iterate through source http headers and send to client */
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avl_tree_rlock(source->parser->vars);
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node = avl_get_first(source->parser->vars);
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while (node) {
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var = (http_var_t *)node->key;
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if (strcasecmp(var->name, "ice-password") && !strncasecmp("ice-", var->name, 4)) {
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printf("DEBUG: sending %s: %s\n", var->name, var->value);
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sock_write(client->con->sock, "%s: %s\r\n", var->name, var->value);
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}
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node = avl_get_next(node);
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}
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avl_tree_unlock(source->parser->vars);
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sock_write(client->con->sock, "\r\n");
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sock_set_blocking(client->con->sock, SOCK_NONBLOCK);
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}
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avl_tree_wlock(source->pending_tree);
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avl_insert(source->pending_tree, (void *)client);
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avl_tree_unlock(source->pending_tree);
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}
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avl_tree_wlock(source->pending_tree);
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avl_insert(source->pending_tree, (void *)client);
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avl_tree_unlock(source->pending_tree);
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}
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avl_tree_unlock(global.source_tree);
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if (!source) {
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printf("DEBUG: source not found for client\n");
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if (parser->req_type == httpp_req_get) {
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client->respcode = 404;
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bytes = sock_write(client->con->sock, "HTTP/1.0 404 Source Not Found\r\nContent-Type: text/html\r\n\r\n"\
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"<b>The source you requested could not be found.</b>\r\n");
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if (bytes > 0) client->con->sent_bytes = bytes;
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avl_tree_unlock(global.source_tree);
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if (!source) {
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printf("DEBUG: source not found for client\n");
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if (parser->req_type == httpp_req_get) {
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client->respcode = 404;
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bytes = sock_write(client->con->sock, "HTTP/1.0 404 Source Not Found\r\nContent-Type: text/html\r\n\r\n"\
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"<b>The source you requested could not be found.</b>\r\n");
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if (bytes > 0) client->con->sent_bytes = bytes;
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}
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client_destroy(client);
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}
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client_destroy(client);
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continue;
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} else {
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printf("DEBUG: wrong request type\n");
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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continue;
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} else {
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printf("DEBUG: wrong request type\n");
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printf("DEBUG: parsing failed\n");
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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} else {
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printf("DEBUG: parsing failed\n");
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connection_close(con);
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httpp_destroy(parser);
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continue;
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}
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}
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