Tue, 03 Jul 2007 23:51:26 +0000
Fixed a bug in the XMPP parser involving event handlers that replace the xmlnode packet. This caused double frees in this situation. The replacing function must free the xmlnode, since multiple event handlers could do this, and the intermediate xml trees would leak otherwise.
--- a/libpurple/protocols/jabber/jabber.c Tue Jul 03 15:50:24 2007 +0000 +++ b/libpurple/protocols/jabber/jabber.c Tue Jul 03 23:51:26 2007 +0000 @@ -175,49 +175,49 @@ static void tls_init(JabberStream *js); -void jabber_process_packet(JabberStream *js, xmlnode *packet) +void jabber_process_packet(JabberStream *js, xmlnode **packet) { const char *xmlns; - purple_signal_emit(my_protocol, "jabber-receiving-xmlnode", js->gc, &packet); + purple_signal_emit(my_protocol, "jabber-receiving-xmlnode", js->gc, packet); /* if the signal leaves us with a null packet, we're done */ - if(NULL == packet) + if(NULL == *packet) return; - xmlns = xmlnode_get_namespace(packet); + xmlns = xmlnode_get_namespace(*packet); - if(!strcmp(packet->name, "iq")) { - jabber_iq_parse(js, packet); - } else if(!strcmp(packet->name, "presence")) { - jabber_presence_parse(js, packet); - } else if(!strcmp(packet->name, "message")) { - jabber_message_parse(js, packet); - } else if(!strcmp(packet->name, "stream:features")) { - jabber_stream_features_parse(js, packet); - } else if (!strcmp(packet->name, "features") && + if(!strcmp((*packet)->name, "iq")) { + jabber_iq_parse(js, *packet); + } else if(!strcmp((*packet)->name, "presence")) { + jabber_presence_parse(js, *packet); + } else if(!strcmp((*packet)->name, "message")) { + jabber_message_parse(js, *packet); + } else if(!strcmp((*packet)->name, "stream:features")) { + jabber_stream_features_parse(js, *packet); + } else if (!strcmp((*packet)->name, "features") && !strcmp(xmlns, "http://etherx.jabber.org/streams")) { - jabber_stream_features_parse(js, packet); - } else if(!strcmp(packet->name, "stream:error") || - (!strcmp(packet->name, "error") && + jabber_stream_features_parse(js, *packet); + } else if(!strcmp((*packet)->name, "stream:error") || + (!strcmp((*packet)->name, "error") && !strcmp(xmlns, "http://etherx.jabber.org/streams"))) { - jabber_stream_handle_error(js, packet); - } else if(!strcmp(packet->name, "challenge")) { + jabber_stream_handle_error(js, *packet); + } else if(!strcmp((*packet)->name, "challenge")) { if(js->state == JABBER_STREAM_AUTHENTICATING) - jabber_auth_handle_challenge(js, packet); - } else if(!strcmp(packet->name, "success")) { + jabber_auth_handle_challenge(js, *packet); + } else if(!strcmp((*packet)->name, "success")) { if(js->state == JABBER_STREAM_AUTHENTICATING) - jabber_auth_handle_success(js, packet); - } else if(!strcmp(packet->name, "failure")) { + jabber_auth_handle_success(js, *packet); + } else if(!strcmp((*packet)->name, "failure")) { if(js->state == JABBER_STREAM_AUTHENTICATING) - jabber_auth_handle_failure(js, packet); - } else if(!strcmp(packet->name, "proceed")) { + jabber_auth_handle_failure(js, *packet); + } else if(!strcmp((*packet)->name, "proceed")) { if(js->state == JABBER_STREAM_AUTHENTICATING && !js->gsc) tls_init(js); } else { purple_debug(PURPLE_DEBUG_WARNING, "jabber", "Unknown packet: %s\n", - packet->name); + (*packet)->name); } }
--- a/libpurple/protocols/jabber/jabber.h Tue Jul 03 15:50:24 2007 +0000 +++ b/libpurple/protocols/jabber/jabber.h Tue Jul 03 23:51:26 2007 +0000 @@ -191,7 +191,7 @@ /* what kind of additional features as returned from disco#info are supported? */ extern GList *jabber_features; -void jabber_process_packet(JabberStream *js, xmlnode *packet); +void jabber_process_packet(JabberStream *js, xmlnode **packet); void jabber_send(JabberStream *js, xmlnode *data); void jabber_send_raw(JabberStream *js, const char *data, int len);
--- a/libpurple/protocols/jabber/parser.c Tue Jul 03 15:50:24 2007 +0000 +++ b/libpurple/protocols/jabber/parser.c Tue Jul 03 23:51:26 2007 +0000 @@ -113,7 +113,7 @@ } else { xmlnode *packet = js->current; js->current = NULL; - jabber_process_packet(js, packet); + jabber_process_packet(js, &packet); xmlnode_free(packet); } }