/* * Asterisk -- An open source telephony toolkit. * * Copyright (C) 1999 - 2005, Digium, Inc. * * Matt O'Gorman * * See http://www.asterisk.org for more information about * the Asterisk project. Please do not directly contact * any of the maintainers of this project for assistance; * the project provides a web site, mailing lists and IRC * channels for your use. * * This program is free software, distributed under the terms of * the GNU General Public License Version 2. See the LICENSE file * at the top of the source tree. */ /*! \file * * \author Matt O'Gorman * * \brief Gtalk Channel Driver, until google/libjingle works with jingle spec * * \ingroup channel_drivers */ /*** MODULEINFO iksemel res_jabber openssl ***/ #include "asterisk.h" ASTERISK_FILE_VERSION(__FILE__, "$Revision$") #include #include #include #include #include #include #include #include #include #include "asterisk/lock.h" #include "asterisk/channel.h" #include "asterisk/config.h" #include "asterisk/module.h" #include "asterisk/pbx.h" #include "asterisk/sched.h" #include "asterisk/io.h" #include "asterisk/rtp_engine.h" #include "asterisk/stun.h" #include "asterisk/acl.h" #include "asterisk/callerid.h" #include "asterisk/file.h" #include "asterisk/cli.h" #include "asterisk/app.h" #include "asterisk/musiconhold.h" #include "asterisk/manager.h" #include "asterisk/stringfields.h" #include "asterisk/utils.h" #include "asterisk/causes.h" #include "asterisk/astobj.h" #include "asterisk/abstract_jb.h" #include "asterisk/jabber.h" #define GOOGLE_CONFIG "gtalk.conf" #define GOOGLE_NS "http://www.google.com/session" /*! Global jitterbuffer configuration - by default, jb is disabled */ static struct ast_jb_conf default_jbconf = { .flags = 0, .max_size = -1, .resync_threshold = -1, .impl = "", .target_extra = -1, }; static struct ast_jb_conf global_jbconf; enum gtalk_protocol { AJI_PROTOCOL_UDP = 1, AJI_PROTOCOL_SSLTCP = 2, }; enum gtalk_connect_type { AJI_CONNECT_STUN = 1, AJI_CONNECT_LOCAL = 2, AJI_CONNECT_RELAY = 3, }; struct gtalk_pvt { ast_mutex_t lock; /*!< Channel private lock */ time_t laststun; struct gtalk *parent; /*!< Parent client */ char sid[100]; char us[AJI_MAX_JIDLEN]; char them[AJI_MAX_JIDLEN]; char ring[10]; /*!< Message ID of ring */ iksrule *ringrule; /*!< Rule for matching RING request */ int initiator; /*!< If we're the initiator */ int alreadygone; int capability; struct ast_codec_pref prefs; struct gtalk_candidate *theircandidates; struct gtalk_candidate *ourcandidates; char cid_num[80]; /*!< Caller ID num */ char cid_name[80]; /*!< Caller ID name */ char exten[80]; /*!< Called extension */ struct ast_channel *owner; /*!< Master Channel */ struct ast_rtp_instance *rtp; /*!< RTP audio session */ struct ast_rtp_instance *vrtp; /*!< RTP video session */ format_t jointcapability; /*!< Supported capability at both ends (codecs ) */ format_t peercapability; struct gtalk_pvt *next; /* Next entity */ }; struct gtalk_candidate { char name[100]; enum gtalk_protocol protocol; double preference; char username[100]; char password[100]; enum gtalk_connect_type type; char network[6]; int generation; char ip[16]; int port; int receipt; struct gtalk_candidate *next; }; struct gtalk { ASTOBJ_COMPONENTS(struct gtalk); struct aji_client *connection; struct aji_buddy *buddy; struct gtalk_pvt *p; struct ast_codec_pref prefs; int amaflags; /*!< AMA Flags */ char user[AJI_MAX_JIDLEN]; char context[AST_MAX_CONTEXT]; char parkinglot[AST_MAX_CONTEXT]; /*!< Parkinglot */ char accountcode[AST_MAX_ACCOUNT_CODE]; /*!< Account code */ format_t capability; ast_group_t callgroup; /*!< Call group */ ast_group_t pickupgroup; /*!< Pickup group */ int callingpres; /*!< Calling presentation */ int allowguest; char language[MAX_LANGUAGE]; /*!< Default language for prompts */ char musicclass[MAX_MUSICCLASS]; /*!< Music on Hold class */ }; struct gtalk_container { ASTOBJ_CONTAINER_COMPONENTS(struct gtalk); }; static const char desc[] = "Gtalk Channel"; static format_t global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263; AST_MUTEX_DEFINE_STATIC(gtalklock); /*!< Protect the interface list (of gtalk_pvt's) */ /* Forward declarations */ static struct ast_channel *gtalk_request(const char *type, format_t format, const struct ast_channel *requestor, void *data, int *cause); static int gtalk_digit(struct ast_channel *ast, char digit, unsigned int duration); static int gtalk_sendtext(struct ast_channel *ast, const char *text); static int gtalk_digit_begin(struct ast_channel *ast, char digit); static int gtalk_digit_end(struct ast_channel *ast, char digit, unsigned int duration); static int gtalk_call(struct ast_channel *ast, char *dest, int timeout); static int gtalk_hangup(struct ast_channel *ast); static int gtalk_answer(struct ast_channel *ast); static int gtalk_action(struct gtalk *client, struct gtalk_pvt *p, const char *action); static void gtalk_free_pvt(struct gtalk *client, struct gtalk_pvt *p); static int gtalk_newcall(struct gtalk *client, ikspak *pak); static struct ast_frame *gtalk_read(struct ast_channel *ast); static int gtalk_write(struct ast_channel *ast, struct ast_frame *f); static int gtalk_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen); static int gtalk_fixup(struct ast_channel *oldchan, struct ast_channel *newchan); static int gtalk_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen); static struct gtalk_pvt *gtalk_alloc(struct gtalk *client, const char *us, const char *them, const char *sid); static char *gtalk_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a); static char *gtalk_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a); /*! \brief PBX interface structure for channel registration */ static const struct ast_channel_tech gtalk_tech = { .type = "Gtalk", .description = "Gtalk Channel Driver", .capabilities = AST_FORMAT_AUDIO_MASK, .requester = gtalk_request, .send_text = gtalk_sendtext, .send_digit_begin = gtalk_digit_begin, .send_digit_end = gtalk_digit_end, .bridge = ast_rtp_instance_bridge, .call = gtalk_call, .hangup = gtalk_hangup, .answer = gtalk_answer, .read = gtalk_read, .write = gtalk_write, .exception = gtalk_read, .indicate = gtalk_indicate, .fixup = gtalk_fixup, .send_html = gtalk_sendhtml, .properties = AST_CHAN_TP_WANTSJITTER | AST_CHAN_TP_CREATESJITTER }; static struct sockaddr_in bindaddr = { 0, }; /*!< The address we bind to */ static struct sched_context *sched; /*!< The scheduling context */ static struct io_context *io; /*!< The IO context */ static struct in_addr __ourip; static struct ast_cli_entry gtalk_cli[] = { AST_CLI_DEFINE(gtalk_do_reload, "Reload GoogleTalk configuration"), AST_CLI_DEFINE(gtalk_show_channels, "Show GoogleTalk channels"), }; static char externip[16]; static struct gtalk_container gtalk_list; static void gtalk_member_destroy(struct gtalk *obj) { ast_free(obj); } static struct gtalk *find_gtalk(char *name, char *connection) { struct gtalk *gtalk = NULL; char *domain = NULL , *s = NULL; if (strchr(connection, '@')) { s = ast_strdupa(connection); domain = strsep(&s, "@"); ast_verbose("OOOOH domain = %s\n", domain); } gtalk = ASTOBJ_CONTAINER_FIND(>alk_list, name); if (!gtalk && strchr(name, '@')) gtalk = ASTOBJ_CONTAINER_FIND_FULL(>alk_list, name, user,,, strcasecmp); if (!gtalk) { /* guest call */ ASTOBJ_CONTAINER_TRAVERSE(>alk_list, 1, { ASTOBJ_RDLOCK(iterator); if (!strcasecmp(iterator->name, "guest")) { gtalk = iterator; } ASTOBJ_UNLOCK(iterator); if (gtalk) break; }); } return gtalk; } static int add_codec_to_answer(const struct gtalk_pvt *p, int codec, iks *dcodecs) { int res = 0; char *format = ast_getformatname(codec); if (!strcasecmp("ulaw", format)) { iks *payload_eg711u, *payload_pcmu; payload_pcmu = iks_new("payload-type"); payload_eg711u = iks_new("payload-type"); if(!payload_eg711u || !payload_pcmu) { iks_delete(payload_pcmu); iks_delete(payload_eg711u); ast_log(LOG_WARNING,"Failed to allocate iks node"); return -1; } iks_insert_attrib(payload_pcmu, "id", "0"); iks_insert_attrib(payload_pcmu, "name", "PCMU"); iks_insert_attrib(payload_pcmu, "clockrate","8000"); iks_insert_attrib(payload_pcmu, "bitrate","64000"); iks_insert_attrib(payload_eg711u, "id", "100"); iks_insert_attrib(payload_eg711u, "name", "EG711U"); iks_insert_attrib(payload_eg711u, "clockrate","8000"); iks_insert_attrib(payload_eg711u, "bitrate","64000"); iks_insert_node(dcodecs, payload_pcmu); iks_insert_node(dcodecs, payload_eg711u); res ++; } if (!strcasecmp("alaw", format)) { iks *payload_eg711a, *payload_pcma; payload_pcma = iks_new("payload-type"); payload_eg711a = iks_new("payload-type"); if(!payload_eg711a || !payload_pcma) { iks_delete(payload_eg711a); iks_delete(payload_pcma); ast_log(LOG_WARNING,"Failed to allocate iks node"); return -1; } iks_insert_attrib(payload_pcma, "id", "8"); iks_insert_attrib(payload_pcma, "name", "PCMA"); iks_insert_attrib(payload_pcma, "clockrate","8000"); iks_insert_attrib(payload_pcma, "bitrate","64000"); payload_eg711a = iks_new("payload-type"); iks_insert_attrib(payload_eg711a, "id", "101"); iks_insert_attrib(payload_eg711a, "name", "EG711A"); iks_insert_attrib(payload_eg711a, "clockrate","8000"); iks_insert_attrib(payload_eg711a, "bitrate","64000"); iks_insert_node(dcodecs, payload_pcma); iks_insert_node(dcodecs, payload_eg711a); res ++; } if (!strcasecmp("ilbc", format)) { iks *payload_ilbc = iks_new("payload-type"); if(!payload_ilbc) { ast_log(LOG_WARNING,"Failed to allocate iks node"); return -1; } iks_insert_attrib(payload_ilbc, "id", "97"); iks_insert_attrib(payload_ilbc, "name", "iLBC"); iks_insert_attrib(payload_ilbc, "clockrate","8000"); iks_insert_attrib(payload_ilbc, "bitrate","13300"); iks_insert_node(dcodecs, payload_ilbc); res ++; } if (!strcasecmp("g723", format)) { iks *payload_g723 = iks_new("payload-type"); if(!payload_g723) { ast_log(LOG_WARNING,"Failed to allocate iks node"); return -1; } iks_insert_attrib(payload_g723, "id", "4"); iks_insert_attrib(payload_g723, "name", "G723"); iks_insert_attrib(payload_g723, "clockrate","8000"); iks_insert_attrib(payload_g723, "bitrate","6300"); iks_insert_node(dcodecs, payload_g723); res ++; } if (!strcasecmp("speex", format)) { iks *payload_speex = iks_new("payload-type"); if(!payload_speex) { ast_log(LOG_WARNING,"Failed to allocate iks node"); return -1; } iks_insert_attrib(payload_speex, "id", "110"); iks_insert_attrib(payload_speex, "name", "speex"); iks_insert_attrib(payload_speex, "clockrate","8000"); iks_insert_attrib(payload_speex, "bitrate","11000"); iks_insert_node(dcodecs, payload_speex); res++; } if (!strcasecmp("gsm", format)) { iks *payload_gsm = iks_new("payload-type"); if(!payload_gsm) { ast_log(LOG_WARNING,"Failed to allocate iks node"); return -1; } iks_insert_attrib(payload_gsm, "id", "103"); iks_insert_attrib(payload_gsm, "name", "gsm"); iks_insert_node(dcodecs, payload_gsm); res++; } return res; } static int gtalk_invite(struct gtalk_pvt *p, char *to, char *from, char *sid, int initiator) { struct gtalk *client = p->parent; iks *iq, *gtalk, *dcodecs, *payload_telephone, *transport; int x; int pref_codec = 0; int alreadysent = 0; int codecs_num = 0; char *lowerto = NULL; iq = iks_new("iq"); gtalk = iks_new("session"); dcodecs = iks_new("description"); transport = iks_new("transport"); payload_telephone = iks_new("payload-type"); if (!(iq && gtalk && dcodecs && transport && payload_telephone)){ iks_delete(iq); iks_delete(gtalk); iks_delete(dcodecs); iks_delete(transport); iks_delete(payload_telephone); ast_log(LOG_ERROR, "Could not allocate iksemel nodes\n"); return 0; } iks_insert_attrib(dcodecs, "xmlns", "http://www.google.com/session/phone"); iks_insert_attrib(dcodecs, "xml:lang", "en"); for (x = 0; x < 64; x++) { if (!(pref_codec = ast_codec_pref_index(&client->prefs, x))) break; if (!(client->capability & pref_codec)) continue; if (alreadysent & pref_codec) continue; codecs_num = add_codec_to_answer(p, pref_codec, dcodecs); alreadysent |= pref_codec; } if (codecs_num) { /* only propose DTMF within an audio session */ iks_insert_attrib(payload_telephone, "id", "106"); iks_insert_attrib(payload_telephone, "name", "telephone-event"); iks_insert_attrib(payload_telephone, "clockrate", "8000"); } iks_insert_attrib(transport,"xmlns","http://www.google.com/transport/p2p"); iks_insert_attrib(iq, "type", "set"); iks_insert_attrib(iq, "to", to); iks_insert_attrib(iq, "from", from); iks_insert_attrib(iq, "id", client->connection->mid); ast_aji_increment_mid(client->connection->mid); iks_insert_attrib(gtalk, "xmlns", "http://www.google.com/session"); iks_insert_attrib(gtalk, "type",initiator ? "initiate": "accept"); /* put the initiator attribute to lower case if we receive the call * otherwise GoogleTalk won't establish the session */ if (!initiator) { char c; char *t = lowerto = ast_strdupa(to); while (((c = *t) != '/') && (*t++ = tolower(c))); } iks_insert_attrib(gtalk, "initiator", initiator ? from : lowerto); iks_insert_attrib(gtalk, "id", sid); iks_insert_node(iq, gtalk); iks_insert_node(gtalk, dcodecs); iks_insert_node(gtalk, transport); iks_insert_node(dcodecs, payload_telephone); ast_aji_send(client->connection, iq); iks_delete(payload_telephone); iks_delete(transport); iks_delete(dcodecs); iks_delete(gtalk); iks_delete(iq); return 1; } static int gtalk_invite_response(struct gtalk_pvt *p, char *to , char *from, char *sid, int initiator) { iks *iq, *session, *transport; char *lowerto = NULL; iq = iks_new("iq"); session = iks_new("session"); transport = iks_new("transport"); if(!(iq && session && transport)) { iks_delete(iq); iks_delete(session); iks_delete(transport); ast_log(LOG_ERROR, " Unable to allocate IKS node\n"); return -1; } iks_insert_attrib(iq, "from", from); iks_insert_attrib(iq, "to", to); iks_insert_attrib(iq, "type", "set"); iks_insert_attrib(iq, "id",p->parent->connection->mid); ast_aji_increment_mid(p->parent->connection->mid); iks_insert_attrib(session, "type", "transport-accept"); iks_insert_attrib(session, "id", sid); /* put the initiator attribute to lower case if we receive the call * otherwise GoogleTalk won't establish the session */ if (!initiator) { char c; char *t = lowerto = ast_strdupa(to); while (((c = *t) != '/') && (*t++ = tolower(c))); } iks_insert_attrib(session, "initiator", initiator ? from : lowerto); iks_insert_attrib(session, "xmlns", "http://www.google.com/session"); iks_insert_attrib(transport, "xmlns", "http://www.google.com/transport/p2p"); iks_insert_node(iq,session); iks_insert_node(session,transport); ast_aji_send(p->parent->connection, iq); iks_delete(transport); iks_delete(session); iks_delete(iq); return 1; } static int gtalk_ringing_ack(void *data, ikspak *pak) { struct gtalk_pvt *p = data; if (p->ringrule) iks_filter_remove_rule(p->parent->connection->f, p->ringrule); p->ringrule = NULL; if (p->owner) ast_queue_control(p->owner, AST_CONTROL_RINGING); return IKS_FILTER_EAT; } static int gtalk_answer(struct ast_channel *ast) { struct gtalk_pvt *p = ast->tech_pvt; int res = 0; ast_debug(1, "Answer!\n"); ast_mutex_lock(&p->lock); gtalk_invite(p, p->them, p->us,p->sid, 0); manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate", "Channel: %s\r\nChanneltype: %s\r\nGtalk-SID: %s\r\n", ast->name, "GTALK", p->sid); ast_mutex_unlock(&p->lock); return res; } static enum ast_rtp_glue_result gtalk_get_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance **instance) { struct gtalk_pvt *p = chan->tech_pvt; enum ast_rtp_glue_result res = AST_RTP_GLUE_RESULT_FORBID; if (!p) return res; ast_mutex_lock(&p->lock); if (p->rtp){ ao2_ref(p->rtp, +1); *instance = p->rtp; res = AST_RTP_GLUE_RESULT_LOCAL; } ast_mutex_unlock(&p->lock); return res; } static format_t gtalk_get_codec(struct ast_channel *chan) { struct gtalk_pvt *p = chan->tech_pvt; return p->peercapability; } static int gtalk_set_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance *rtp, struct ast_rtp_instance *vrtp, struct ast_rtp_instance *trtp, format_t codecs, int nat_active) { struct gtalk_pvt *p; p = chan->tech_pvt; if (!p) return -1; ast_mutex_lock(&p->lock); /* if (rtp) ast_rtp_get_peer(rtp, &p->redirip); else memset(&p->redirip, 0, sizeof(p->redirip)); p->redircodecs = codecs; */ /* Reset lastrtprx timer */ ast_mutex_unlock(&p->lock); return 0; } static struct ast_rtp_glue gtalk_rtp_glue = { .type = "Gtalk", .get_rtp_info = gtalk_get_rtp_peer, .get_codec = gtalk_get_codec, .update_peer = gtalk_set_rtp_peer, }; static int gtalk_response(struct gtalk *client, char *from, ikspak *pak, const char *reasonstr, const char *reasonstr2) { iks *response = NULL, *error = NULL, *reason = NULL; int res = -1; response = iks_new("iq"); if (response) { iks_insert_attrib(response, "type", "result"); iks_insert_attrib(response, "from", from); iks_insert_attrib(response, "to", iks_find_attrib(pak->x, "from")); iks_insert_attrib(response, "id", iks_find_attrib(pak->x, "id")); if (reasonstr) { error = iks_new("error"); if (error) { iks_insert_attrib(error, "type", "cancel"); reason = iks_new(reasonstr); if (reason) iks_insert_node(error, reason); iks_insert_node(response, error); } } ast_aji_send(client->connection, response); res = 0; } iks_delete(reason); iks_delete(error); iks_delete(response); return res; } static int gtalk_is_answered(struct gtalk *client, ikspak *pak) { struct gtalk_pvt *tmp; char *from; iks *codec; char s1[BUFSIZ], s2[BUFSIZ], s3[BUFSIZ]; int peernoncodeccapability; ast_log(LOG_DEBUG, "The client is %s\n", client->name); /* Make sure our new call doesn't exist yet */ for (tmp = client->p; tmp; tmp = tmp->next) { if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) break; } /* codec points to the first tag */ codec = iks_first_tag(iks_first_tag(iks_first_tag(pak->x))); while (codec) { ast_rtp_codecs_payloads_set_m_type(ast_rtp_instance_get_codecs(tmp->rtp), tmp->rtp, atoi(iks_find_attrib(codec, "id"))); ast_rtp_codecs_payloads_set_rtpmap_type(ast_rtp_instance_get_codecs(tmp->rtp), tmp->rtp, atoi(iks_find_attrib(codec, "id")), "audio", iks_find_attrib(codec, "name"), 0); codec = iks_next_tag(codec); } /* Now gather all of the codecs that we are asked for */ ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(tmp->rtp), &tmp->peercapability, &peernoncodeccapability); /* at this point, we received an awser from the remote Gtalk client, which allows us to compare capabilities */ tmp->jointcapability = tmp->capability & tmp->peercapability; if (!tmp->jointcapability) { ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, tmp->capability), ast_getformatname_multiple(s2, BUFSIZ, tmp->peercapability), ast_getformatname_multiple(s3, BUFSIZ, tmp->jointcapability)); /* close session if capabilities don't match */ ast_queue_hangup(tmp->owner); return -1; } from = iks_find_attrib(pak->x, "to"); if(!from) from = client->connection->jid->full; if (tmp) { if (tmp->owner) ast_queue_control(tmp->owner, AST_CONTROL_ANSWER); } else ast_log(LOG_NOTICE, "Whoa, didn't find call!\n"); gtalk_response(client, from, pak, NULL, NULL); return 1; } static int gtalk_is_accepted(struct gtalk *client, ikspak *pak) { struct gtalk_pvt *tmp; char *from; ast_log(LOG_DEBUG, "The client is %s\n", client->name); /* find corresponding call */ for (tmp = client->p; tmp; tmp = tmp->next) { if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) break; } from = iks_find_attrib(pak->x, "to"); if(!from) from = client->connection->jid->full; if (!tmp) ast_log(LOG_NOTICE, "Whoa, didn't find call!\n"); /* answer 'iq' packet to let the remote peer know that we're alive */ gtalk_response(client, from, pak, NULL, NULL); return 1; } static int gtalk_handle_dtmf(struct gtalk *client, ikspak *pak) { struct gtalk_pvt *tmp; iks *dtmfnode = NULL, *dtmfchild = NULL; char *dtmf; char *from; /* Make sure our new call doesn't exist yet */ for (tmp = client->p; tmp; tmp = tmp->next) { if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid) || iks_find_with_attrib(pak->x, "gtalk", "sid", tmp->sid)) break; } from = iks_find_attrib(pak->x, "to"); if(!from) from = client->connection->jid->full; if (tmp) { if(iks_find_with_attrib(pak->x, "dtmf-method", "method", "rtp")) { gtalk_response(client, from, pak, "feature-not-implemented xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'", "unsupported-dtmf-method xmlns='http://jabber.org/protocol/gtalk/info/dtmf#errors'"); return -1; } if ((dtmfnode = iks_find(pak->x, "dtmf"))) { if((dtmf = iks_find_attrib(dtmfnode, "code"))) { if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-up")) { struct ast_frame f = {AST_FRAME_DTMF_BEGIN, }; f.subclass.integer = dtmf[0]; ast_queue_frame(tmp->owner, &f); ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer); } else if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-down")) { struct ast_frame f = {AST_FRAME_DTMF_END, }; f.subclass.integer = dtmf[0]; ast_queue_frame(tmp->owner, &f); ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer); } else if(iks_find_attrib(pak->x, "dtmf")) { /* 250 millasecond default */ struct ast_frame f = {AST_FRAME_DTMF, }; f.subclass.integer = dtmf[0]; ast_queue_frame(tmp->owner, &f); ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer); } } } else if ((dtmfnode = iks_find_with_attrib(pak->x, "gtalk", "action", "session-info"))) { if((dtmfchild = iks_find(dtmfnode, "dtmf"))) { if((dtmf = iks_find_attrib(dtmfchild, "code"))) { if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-up")) { struct ast_frame f = {AST_FRAME_DTMF_END, }; f.subclass.integer = dtmf[0]; ast_queue_frame(tmp->owner, &f); ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer); } else if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-down")) { struct ast_frame f = {AST_FRAME_DTMF_BEGIN, }; f.subclass.integer = dtmf[0]; ast_queue_frame(tmp->owner, &f); ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer); } } } } gtalk_response(client, from, pak, NULL, NULL); return 1; } else ast_log(LOG_NOTICE, "Whoa, didn't find call!\n"); gtalk_response(client, from, pak, NULL, NULL); return 1; } static int gtalk_hangup_farend(struct gtalk *client, ikspak *pak) { struct gtalk_pvt *tmp; char *from; ast_debug(1, "The client is %s\n", client->name); /* Make sure our new call doesn't exist yet */ for (tmp = client->p; tmp; tmp = tmp->next) { if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) break; } from = iks_find_attrib(pak->x, "to"); if(!from) from = client->connection->jid->full; if (tmp) { tmp->alreadygone = 1; if (tmp->owner) ast_queue_hangup(tmp->owner); } else ast_log(LOG_NOTICE, "Whoa, didn't find call!\n"); gtalk_response(client, from, pak, NULL, NULL); return 1; } static int gtalk_create_candidates(struct gtalk *client, struct gtalk_pvt *p, char *sid, char *from, char *to) { struct gtalk_candidate *tmp; struct aji_client *c = client->connection; struct gtalk_candidate *ours1 = NULL, *ours2 = NULL; struct sockaddr_in sin = { 0, }; struct ast_sockaddr sin_tmp; struct ast_sockaddr bindaddr_tmp; struct sockaddr_in dest; struct ast_sockaddr us; iks *iq, *gtalk, *candidate, *transport; char user[17], pass[17], preference[5], port[7]; char *lowerfrom = NULL; iq = iks_new("iq"); gtalk = iks_new("session"); candidate = iks_new("candidate"); transport = iks_new("transport"); if (!iq || !gtalk || !candidate || !transport) { ast_log(LOG_ERROR, "Memory allocation error\n"); goto safeout; } ours1 = ast_calloc(1, sizeof(*ours1)); ours2 = ast_calloc(1, sizeof(*ours2)); if (!ours1 || !ours2) goto safeout; iks_insert_attrib(transport, "xmlns","http://www.google.com/transport/p2p"); iks_insert_node(iq, gtalk); iks_insert_node(gtalk,transport); iks_insert_node(transport, candidate); for (; p; p = p->next) { if (!strcasecmp(p->sid, sid)) break; } if (!p) { ast_log(LOG_NOTICE, "No matching gtalk session - SID %s!\n", sid); goto safeout; } ast_rtp_instance_get_local_address(p->rtp, &sin_tmp); ast_sockaddr_to_sin(&sin_tmp, &sin); ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr); ast_find_ourip(&us, &bindaddr_tmp); if (!strcmp(ast_sockaddr_stringify_addr(&us), "127.0.0.1")) { ast_log(LOG_WARNING, "Found a loopback IP on the system, check your network configuration or set the bindaddr attribute."); } /* Setup our gtalk candidates */ ast_copy_string(ours1->name, "rtp", sizeof(ours1->name)); ours1->port = ntohs(sin.sin_port); ours1->preference = 1; snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random()); snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random()); ast_copy_string(ours1->username, user, sizeof(ours1->username)); ast_copy_string(ours1->password, pass, sizeof(ours1->password)); ast_copy_string(ours1->ip, ast_sockaddr_stringify_addr(&us), sizeof(ours1->ip)); ours1->protocol = AJI_PROTOCOL_UDP; ours1->type = AJI_CONNECT_LOCAL; ours1->generation = 0; p->ourcandidates = ours1; if (!ast_strlen_zero(externip)) { /* XXX We should really stun for this one not just go with externip XXX */ snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random()); snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random()); ast_copy_string(ours2->username, user, sizeof(ours2->username)); ast_copy_string(ours2->password, pass, sizeof(ours2->password)); ast_copy_string(ours2->ip, externip, sizeof(ours2->ip)); ast_copy_string(ours2->name, "rtp", sizeof(ours1->name)); ours2->port = ntohs(sin.sin_port); ours2->preference = 0.9; ours2->protocol = AJI_PROTOCOL_UDP; ours2->type = AJI_CONNECT_STUN; ours2->generation = 0; ours1->next = ours2; ours2 = NULL; } ours1 = NULL; dest.sin_addr = __ourip; dest.sin_port = sin.sin_port; for (tmp = p->ourcandidates; tmp; tmp = tmp->next) { snprintf(port, sizeof(port), "%d", tmp->port); snprintf(preference, sizeof(preference), "%.2f", tmp->preference); iks_insert_attrib(iq, "from", to); iks_insert_attrib(iq, "to", from); iks_insert_attrib(iq, "type", "set"); iks_insert_attrib(iq, "id", c->mid); ast_aji_increment_mid(c->mid); iks_insert_attrib(gtalk, "type", "transport-info"); iks_insert_attrib(gtalk, "id", sid); /* put the initiator attribute to lower case if we receive the call * otherwise GoogleTalk won't establish the session */ if (!p->initiator) { char c; char *t = lowerfrom = ast_strdupa(from); while (((c = *t) != '/') && (*t++ = tolower(c))); } iks_insert_attrib(gtalk, "initiator", (p->initiator) ? to : lowerfrom); iks_insert_attrib(gtalk, "xmlns", GOOGLE_NS); iks_insert_attrib(candidate, "name", tmp->name); iks_insert_attrib(candidate, "address", tmp->ip); iks_insert_attrib(candidate, "port", port); iks_insert_attrib(candidate, "username", tmp->username); iks_insert_attrib(candidate, "password", tmp->password); iks_insert_attrib(candidate, "preference", preference); if (tmp->protocol == AJI_PROTOCOL_UDP) iks_insert_attrib(candidate, "protocol", "udp"); if (tmp->protocol == AJI_PROTOCOL_SSLTCP) iks_insert_attrib(candidate, "protocol", "ssltcp"); if (tmp->type == AJI_CONNECT_STUN) iks_insert_attrib(candidate, "type", "stun"); if (tmp->type == AJI_CONNECT_LOCAL) iks_insert_attrib(candidate, "type", "local"); if (tmp->type == AJI_CONNECT_RELAY) iks_insert_attrib(candidate, "type", "relay"); iks_insert_attrib(candidate, "network", "0"); iks_insert_attrib(candidate, "generation", "0"); ast_aji_send(c, iq); } p->laststun = 0; safeout: if (ours1) ast_free(ours1); if (ours2) ast_free(ours2); iks_delete(iq); iks_delete(gtalk); iks_delete(candidate); iks_delete(transport); return 1; } static struct gtalk_pvt *gtalk_alloc(struct gtalk *client, const char *us, const char *them, const char *sid) { struct gtalk_pvt *tmp = NULL; struct aji_resource *resources = NULL; struct aji_buddy *buddy; char idroster[200]; char *data, *exten = NULL; struct ast_sockaddr bindaddr_tmp; ast_debug(1, "The client is %s for alloc\n", client->name); if (!sid && !strchr(them, '/')) { /* I started call! */ if (!strcasecmp(client->name, "guest")) { buddy = ASTOBJ_CONTAINER_FIND(&client->connection->buddies, them); if (buddy) resources = buddy->resources; } else if (client->buddy) resources = client->buddy->resources; while (resources) { if (resources->cap->jingle) { break; } resources = resources->next; } if (resources) snprintf(idroster, sizeof(idroster), "%s/%s", them, resources->resource); else { ast_log(LOG_ERROR, "no gtalk capable clients to talk to.\n"); return NULL; } } if (!(tmp = ast_calloc(1, sizeof(*tmp)))) { return NULL; } memcpy(&tmp->prefs, &client->prefs, sizeof(struct ast_codec_pref)); if (sid) { ast_copy_string(tmp->sid, sid, sizeof(tmp->sid)); ast_copy_string(tmp->them, them, sizeof(tmp->them)); ast_copy_string(tmp->us, us, sizeof(tmp->us)); } else { snprintf(tmp->sid, sizeof(tmp->sid), "%08lx%08lx", ast_random(), ast_random()); ast_copy_string(tmp->them, idroster, sizeof(tmp->them)); ast_copy_string(tmp->us, us, sizeof(tmp->us)); tmp->initiator = 1; } /* clear codecs */ ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr); if (!(tmp->rtp = ast_rtp_instance_new("asterisk", sched, &bindaddr_tmp, NULL))) { ast_log(LOG_ERROR, "Failed to create a new RTP instance (possibly an invalid bindaddr?)\n"); ast_free(tmp); return NULL; } ast_rtp_instance_set_prop(tmp->rtp, AST_RTP_PROPERTY_RTCP, 1); ast_rtp_codecs_payloads_clear(ast_rtp_instance_get_codecs(tmp->rtp), tmp->rtp); /* add user configured codec capabilites */ if (client->capability) tmp->capability = client->capability; else if (global_capability) tmp->capability = global_capability; tmp->parent = client; if (!tmp->rtp) { ast_log(LOG_WARNING, "Out of RTP sessions?\n"); ast_free(tmp); return NULL; } /* Set CALLERID(name) to the full JID of the remote peer */ ast_copy_string(tmp->cid_name, tmp->them, sizeof(tmp->cid_name)); if(strchr(tmp->us, '/')) { data = ast_strdupa(tmp->us); exten = strsep(&data, "/"); } else exten = tmp->us; ast_copy_string(tmp->exten, exten, sizeof(tmp->exten)); ast_mutex_init(&tmp->lock); ast_mutex_lock(>alklock); tmp->next = client->p; client->p = tmp; ast_mutex_unlock(>alklock); return tmp; } /*! \brief Start new gtalk channel */ static struct ast_channel *gtalk_new(struct gtalk *client, struct gtalk_pvt *i, int state, const char *title, const char *linkedid) { struct ast_channel *tmp; int fmt; int what; const char *n2; if (title) n2 = title; else n2 = i->us; tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, linkedid, client->accountcode, i->exten, client->context, client->amaflags, "Gtalk/%s-%04lx", n2, ast_random() & 0xffff); if (!tmp) { ast_log(LOG_WARNING, "Unable to allocate Gtalk channel structure!\n"); return NULL; } tmp->tech = >alk_tech; /* Select our native format based on codec preference until we receive something from another device to the contrary. */ if (i->jointcapability) what = i->jointcapability; else if (i->capability) what = i->capability; else what = global_capability; /* Set Frame packetization */ if (i->rtp) ast_rtp_codecs_packetization_set(ast_rtp_instance_get_codecs(i->rtp), i->rtp, &i->prefs); tmp->nativeformats = ast_codec_choose(&i->prefs, what, 1) | (i->jointcapability & AST_FORMAT_VIDEO_MASK); fmt = ast_best_codec(tmp->nativeformats); if (i->rtp) { ast_rtp_instance_set_prop(i->rtp, AST_RTP_PROPERTY_STUN, 1); ast_channel_set_fd(tmp, 0, ast_rtp_instance_fd(i->rtp, 0)); ast_channel_set_fd(tmp, 1, ast_rtp_instance_fd(i->rtp, 1)); } if (i->vrtp) { ast_rtp_instance_set_prop(i->vrtp, AST_RTP_PROPERTY_STUN, 1); ast_channel_set_fd(tmp, 2, ast_rtp_instance_fd(i->vrtp, 0)); ast_channel_set_fd(tmp, 3, ast_rtp_instance_fd(i->vrtp, 1)); } if (state == AST_STATE_RING) tmp->rings = 1; tmp->adsicpe = AST_ADSI_UNAVAILABLE; tmp->writeformat = fmt; tmp->rawwriteformat = fmt; tmp->readformat = fmt; tmp->rawreadformat = fmt; tmp->tech_pvt = i; tmp->callgroup = client->callgroup; tmp->pickupgroup = client->pickupgroup; tmp->cid.cid_pres = client->callingpres; if (!ast_strlen_zero(client->accountcode)) ast_string_field_set(tmp, accountcode, client->accountcode); if (client->amaflags) tmp->amaflags = client->amaflags; if (!ast_strlen_zero(client->language)) ast_string_field_set(tmp, language, client->language); if (!ast_strlen_zero(client->musicclass)) ast_string_field_set(tmp, musicclass, client->musicclass); if (!ast_strlen_zero(client->parkinglot)) ast_string_field_set(tmp, parkinglot, client->parkinglot); i->owner = tmp; ast_module_ref(ast_module_info->self); ast_copy_string(tmp->context, client->context, sizeof(tmp->context)); ast_copy_string(tmp->exten, i->exten, sizeof(tmp->exten)); if (!ast_strlen_zero(i->exten) && strcmp(i->exten, "s")) tmp->cid.cid_dnid = ast_strdup(i->exten); tmp->priority = 1; if (i->rtp) ast_jb_configure(tmp, &global_jbconf); if (state != AST_STATE_DOWN && ast_pbx_start(tmp)) { ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name); tmp->hangupcause = AST_CAUSE_SWITCH_CONGESTION; ast_hangup(tmp); tmp = NULL; } else { manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate", "Channel: %s\r\nChanneltype: %s\r\nGtalk-SID: %s\r\n", i->owner ? i->owner->name : "", "Gtalk", i->sid); } return tmp; } static int gtalk_action(struct gtalk *client, struct gtalk_pvt *p, const char *action) { iks *request, *session = NULL; int res = -1; char *lowerthem = NULL; request = iks_new("iq"); if (request) { iks_insert_attrib(request, "type", "set"); iks_insert_attrib(request, "from", p->us); iks_insert_attrib(request, "to", p->them); iks_insert_attrib(request, "id", client->connection->mid); ast_aji_increment_mid(client->connection->mid); session = iks_new("session"); if (session) { iks_insert_attrib(session, "type", action); iks_insert_attrib(session, "id", p->sid); /* put the initiator attribute to lower case if we receive the call * otherwise GoogleTalk won't establish the session */ if (!p->initiator) { char c; char *t = lowerthem = ast_strdupa(p->them); while (((c = *t) != '/') && (*t++ = tolower(c))); } iks_insert_attrib(session, "initiator", p->initiator ? p->us : lowerthem); iks_insert_attrib(session, "xmlns", "http://www.google.com/session"); iks_insert_node(request, session); ast_aji_send(client->connection, request); res = 0; } } iks_delete(session); iks_delete(request); return res; } static void gtalk_free_candidates(struct gtalk_candidate *candidate) { struct gtalk_candidate *last; while (candidate) { last = candidate; candidate = candidate->next; ast_free(last); } } static void gtalk_free_pvt(struct gtalk *client, struct gtalk_pvt *p) { struct gtalk_pvt *cur, *prev = NULL; cur = client->p; while (cur) { if (cur == p) { if (prev) prev->next = p->next; else client->p = p->next; break; } prev = cur; cur = cur->next; } if (p->ringrule) iks_filter_remove_rule(p->parent->connection->f, p->ringrule); if (p->owner) ast_log(LOG_WARNING, "Uh oh, there's an owner, this is going to be messy.\n"); if (p->rtp) ast_rtp_instance_destroy(p->rtp); if (p->vrtp) ast_rtp_instance_destroy(p->vrtp); gtalk_free_candidates(p->theircandidates); ast_free(p); } static int gtalk_newcall(struct gtalk *client, ikspak *pak) { struct gtalk_pvt *p, *tmp = client->p; struct ast_channel *chan; int res; iks *codec; char *from = NULL; char s1[BUFSIZ], s2[BUFSIZ], s3[BUFSIZ]; int peernoncodeccapability; /* Make sure our new call doesn't exist yet */ from = iks_find_attrib(pak->x,"to"); if(!from) from = client->connection->jid->full; while (tmp) { if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) { ast_log(LOG_NOTICE, "Ignoring duplicate call setup on SID %s\n", tmp->sid); gtalk_response(client, from, pak, "out-of-order", NULL); return -1; } tmp = tmp->next; } if (!strcasecmp(client->name, "guest")){ /* the guest account is not tied to any configured XMPP client, let's set it now */ client->connection = ast_aji_get_client(from); if (!client->connection) { ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", from); return -1; } } p = gtalk_alloc(client, from, pak->from->full, iks_find_attrib(pak->query, "id")); if (!p) { ast_log(LOG_WARNING, "Unable to allocate gtalk structure!\n"); return -1; } chan = gtalk_new(client, p, AST_STATE_DOWN, pak->from->user, NULL); if (!chan) { gtalk_free_pvt(client, p); return -1; } ast_mutex_lock(&p->lock); ast_copy_string(p->them, pak->from->full, sizeof(p->them)); if (iks_find_attrib(pak->query, "id")) { ast_copy_string(p->sid, iks_find_attrib(pak->query, "id"), sizeof(p->sid)); } /* codec points to the first tag */ codec = iks_first_tag(iks_first_tag(iks_first_tag(pak->x))); while (codec) { ast_rtp_codecs_payloads_set_m_type(ast_rtp_instance_get_codecs(p->rtp), p->rtp, atoi(iks_find_attrib(codec, "id"))); ast_rtp_codecs_payloads_set_rtpmap_type(ast_rtp_instance_get_codecs(p->rtp), p->rtp, atoi(iks_find_attrib(codec, "id")), "audio", iks_find_attrib(codec, "name"), 0); codec = iks_next_tag(codec); } /* Now gather all of the codecs that we are asked for */ ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(p->rtp), &p->peercapability, &peernoncodeccapability); p->jointcapability = p->capability & p->peercapability; ast_mutex_unlock(&p->lock); ast_setstate(chan, AST_STATE_RING); if (!p->jointcapability) { ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, p->capability), ast_getformatname_multiple(s2, BUFSIZ, p->peercapability), ast_getformatname_multiple(s3, BUFSIZ, p->jointcapability)); /* close session if capabilities don't match */ gtalk_action(client, p, "reject"); p->alreadygone = 1; gtalk_hangup(chan); ast_channel_release(chan); return -1; } res = ast_pbx_start(chan); switch (res) { case AST_PBX_FAILED: ast_log(LOG_WARNING, "Failed to start PBX :(\n"); gtalk_response(client, from, pak, "service-unavailable", NULL); break; case AST_PBX_CALL_LIMIT: ast_log(LOG_WARNING, "Failed to start PBX (call limit reached) \n"); gtalk_response(client, from, pak, "service-unavailable", NULL); break; case AST_PBX_SUCCESS: gtalk_response(client, from, pak, NULL, NULL); gtalk_invite_response(p, p->them, p->us,p->sid, 0); gtalk_create_candidates(client, p, p->sid, p->them, p->us); /* nothing to do */ break; } return 1; } static int gtalk_update_stun(struct gtalk *client, struct gtalk_pvt *p) { struct gtalk_candidate *tmp; struct hostent *hp; struct ast_hostent ahp; struct sockaddr_in sin = { 0, }; struct sockaddr_in aux = { 0, }; struct ast_sockaddr sin_tmp; struct ast_sockaddr aux_tmp; if (time(NULL) == p->laststun) return 0; tmp = p->theircandidates; p->laststun = time(NULL); while (tmp) { char username[256]; /* Find the IP address of the host */ hp = ast_gethostbyname(tmp->ip, &ahp); sin.sin_family = AF_INET; memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr)); sin.sin_port = htons(tmp->port); snprintf(username, sizeof(username), "%s%s", tmp->username, p->ourcandidates->username); /* Find out the result of the STUN */ ast_rtp_instance_get_remote_address(p->rtp, &aux_tmp); ast_sockaddr_to_sin(&aux_tmp, &aux); /* If the STUN result is different from the IP of the hostname, lock on the stun IP of the hostname advertised by the remote client */ if (aux.sin_addr.s_addr && aux.sin_addr.s_addr != sin.sin_addr.s_addr) ast_rtp_instance_stun_request(p->rtp, &aux_tmp, username); else ast_rtp_instance_stun_request(p->rtp, &sin_tmp, username); if (aux.sin_addr.s_addr) { ast_debug(4, "Receiving RTP traffic from IP %s, matches with remote candidate's IP %s\n", ast_inet_ntoa(aux.sin_addr), tmp->ip); ast_debug(4, "Sending STUN request to %s\n", tmp->ip); } tmp = tmp->next; } return 1; } static int gtalk_add_candidate(struct gtalk *client, ikspak *pak) { struct gtalk_pvt *p = NULL, *tmp = NULL; struct aji_client *c = client->connection; struct gtalk_candidate *newcandidate = NULL; iks *traversenodes = NULL, *receipt = NULL; char *from; from = iks_find_attrib(pak->x,"to"); if(!from) from = c->jid->full; for (tmp = client->p; tmp; tmp = tmp->next) { if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) { p = tmp; break; } } if (!p) return -1; traversenodes = pak->query; while(traversenodes) { if(!strcasecmp(iks_name(traversenodes), "session")) { traversenodes = iks_first_tag(traversenodes); continue; } if(!strcasecmp(iks_name(traversenodes), "transport")) { traversenodes = iks_first_tag(traversenodes); continue; } if(!strcasecmp(iks_name(traversenodes), "candidate")) { newcandidate = ast_calloc(1, sizeof(*newcandidate)); if (!newcandidate) return 0; ast_copy_string(newcandidate->name, iks_find_attrib(traversenodes, "name"), sizeof(newcandidate->name)); ast_copy_string(newcandidate->ip, iks_find_attrib(traversenodes, "address"), sizeof(newcandidate->ip)); newcandidate->port = atoi(iks_find_attrib(traversenodes, "port")); ast_copy_string(newcandidate->username, iks_find_attrib(traversenodes, "username"), sizeof(newcandidate->username)); ast_copy_string(newcandidate->password, iks_find_attrib(traversenodes, "password"), sizeof(newcandidate->password)); newcandidate->preference = atof(iks_find_attrib(traversenodes, "preference")); if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "udp")) newcandidate->protocol = AJI_PROTOCOL_UDP; if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "ssltcp")) newcandidate->protocol = AJI_PROTOCOL_SSLTCP; if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "stun")) newcandidate->type = AJI_CONNECT_STUN; if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "local")) newcandidate->type = AJI_CONNECT_LOCAL; if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "relay")) newcandidate->type = AJI_CONNECT_RELAY; ast_copy_string(newcandidate->network, iks_find_attrib(traversenodes, "network"), sizeof(newcandidate->network)); newcandidate->generation = atoi(iks_find_attrib(traversenodes, "generation")); newcandidate->next = NULL; newcandidate->next = p->theircandidates; p->theircandidates = newcandidate; p->laststun = 0; gtalk_update_stun(p->parent, p); newcandidate = NULL; } traversenodes = iks_next_tag(traversenodes); } receipt = iks_new("iq"); iks_insert_attrib(receipt, "type", "result"); iks_insert_attrib(receipt, "from", from); iks_insert_attrib(receipt, "to", iks_find_attrib(pak->x, "from")); iks_insert_attrib(receipt, "id", iks_find_attrib(pak->x, "id")); ast_aji_send(c, receipt); iks_delete(receipt); return 1; } static struct ast_frame *gtalk_rtp_read(struct ast_channel *ast, struct gtalk_pvt *p) { struct ast_frame *f; if (!p->rtp) return &ast_null_frame; f = ast_rtp_instance_read(p->rtp, 0); gtalk_update_stun(p->parent, p); if (p->owner) { /* We already hold the channel lock */ if (f->frametype == AST_FRAME_VOICE) { if (f->subclass.codec != (p->owner->nativeformats & AST_FORMAT_AUDIO_MASK)) { ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(f->subclass.codec)); p->owner->nativeformats = (p->owner->nativeformats & AST_FORMAT_VIDEO_MASK) | f->subclass.codec; ast_set_read_format(p->owner, p->owner->readformat); ast_set_write_format(p->owner, p->owner->writeformat); } /* if ((ast_test_flag(p, SIP_DTMF) == SIP_DTMF_INBAND) && p->vad) { f = ast_dsp_process(p->owner, p->vad, f); if (option_debug && f && (f->frametype == AST_FRAME_DTMF)) ast_debug(1, "* Detected inband DTMF '%c'\n", f->subclass); } */ } } return f; } static struct ast_frame *gtalk_read(struct ast_channel *ast) { struct ast_frame *fr; struct gtalk_pvt *p = ast->tech_pvt; ast_mutex_lock(&p->lock); fr = gtalk_rtp_read(ast, p); ast_mutex_unlock(&p->lock); return fr; } /*! \brief Send frame to media channel (rtp) */ static int gtalk_write(struct ast_channel *ast, struct ast_frame *frame) { struct gtalk_pvt *p = ast->tech_pvt; int res = 0; char buf[256]; switch (frame->frametype) { case AST_FRAME_VOICE: if (!(frame->subclass.codec & ast->nativeformats)) { ast_log(LOG_WARNING, "Asked to transmit frame type %s, while native formats is %s (read/write = %s/%s)\n", ast_getformatname(frame->subclass.codec), ast_getformatname_multiple(buf, sizeof(buf), ast->nativeformats), ast_getformatname(ast->readformat), ast_getformatname(ast->writeformat)); return 0; } if (p) { ast_mutex_lock(&p->lock); if (p->rtp) { res = ast_rtp_instance_write(p->rtp, frame); } ast_mutex_unlock(&p->lock); } break; case AST_FRAME_VIDEO: if (p) { ast_mutex_lock(&p->lock); if (p->vrtp) { res = ast_rtp_instance_write(p->vrtp, frame); } ast_mutex_unlock(&p->lock); } break; case AST_FRAME_IMAGE: return 0; break; default: ast_log(LOG_WARNING, "Can't send %d type frames with Gtalk write\n", frame->frametype); return 0; } return res; } static int gtalk_fixup(struct ast_channel *oldchan, struct ast_channel *newchan) { struct gtalk_pvt *p = newchan->tech_pvt; ast_mutex_lock(&p->lock); if ((p->owner != oldchan)) { ast_mutex_unlock(&p->lock); return -1; } if (p->owner == oldchan) p->owner = newchan; ast_mutex_unlock(&p->lock); return 0; } static int gtalk_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen) { int res = 0; switch (condition) { case AST_CONTROL_HOLD: ast_moh_start(ast, data, NULL); break; case AST_CONTROL_UNHOLD: ast_moh_stop(ast); break; default: ast_log(LOG_NOTICE, "Don't know how to indicate condition '%d'\n", condition); res = -1; } return res; } static int gtalk_sendtext(struct ast_channel *chan, const char *text) { int res = 0; struct aji_client *client = NULL; struct gtalk_pvt *p = chan->tech_pvt; if (!p->parent) { ast_log(LOG_ERROR, "Parent channel not found\n"); return -1; } if (!p->parent->connection) { ast_log(LOG_ERROR, "XMPP client not found\n"); return -1; } client = p->parent->connection; res = ast_aji_send_chat(client, p->them, text); return res; } static int gtalk_digit_begin(struct ast_channel *chan, char digit) { return gtalk_digit(chan, digit, 0); } static int gtalk_digit_end(struct ast_channel *chan, char digit, unsigned int duration) { return gtalk_digit(chan, digit, duration); } static int gtalk_digit(struct ast_channel *ast, char digit, unsigned int duration) { struct gtalk_pvt *p = ast->tech_pvt; struct gtalk *client = p->parent; iks *iq, *gtalk, *dtmf; char buffer[2] = {digit, '\0'}; char *lowerthem = NULL; iq = iks_new("iq"); gtalk = iks_new("gtalk"); dtmf = iks_new("dtmf"); if(!iq || !gtalk || !dtmf) { iks_delete(iq); iks_delete(gtalk); iks_delete(dtmf); ast_log(LOG_ERROR, "Did not send dtmf do to memory issue\n"); return -1; } iks_insert_attrib(iq, "type", "set"); iks_insert_attrib(iq, "to", p->them); iks_insert_attrib(iq, "from", p->us); iks_insert_attrib(iq, "id", client->connection->mid); ast_aji_increment_mid(client->connection->mid); iks_insert_attrib(gtalk, "xmlns", "http://jabber.org/protocol/gtalk"); iks_insert_attrib(gtalk, "action", "session-info"); /* put the initiator attribute to lower case if we receive the call * otherwise GoogleTalk won't establish the session */ if (!p->initiator) { char c; char *t = lowerthem = ast_strdupa(p->them); while (((c = *t) != '/') && (*t++ = tolower(c))); } iks_insert_attrib(gtalk, "initiator", p->initiator ? p->us: lowerthem); iks_insert_attrib(gtalk, "sid", p->sid); iks_insert_attrib(dtmf, "xmlns", "http://jabber.org/protocol/gtalk/info/dtmf"); iks_insert_attrib(dtmf, "code", buffer); iks_insert_node(iq, gtalk); iks_insert_node(gtalk, dtmf); ast_mutex_lock(&p->lock); if (ast->dtmff.frametype == AST_FRAME_DTMF_BEGIN || duration == 0) { iks_insert_attrib(dtmf, "action", "button-down"); } else if (ast->dtmff.frametype == AST_FRAME_DTMF_END || duration != 0) { iks_insert_attrib(dtmf, "action", "button-up"); } ast_aji_send(client->connection, iq); iks_delete(iq); iks_delete(gtalk); iks_delete(dtmf); ast_mutex_unlock(&p->lock); return 0; } static int gtalk_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen) { ast_log(LOG_NOTICE, "XXX Implement gtalk sendhtml XXX\n"); return -1; } /* Not in use right now. static int gtalk_auto_congest(void *nothing) { struct gtalk_pvt *p = nothing; ast_mutex_lock(&p->lock); if (p->owner) { if (!ast_channel_trylock(p->owner)) { ast_log(LOG_NOTICE, "Auto-congesting %s\n", p->owner->name); ast_queue_control(p->owner, AST_CONTROL_CONGESTION); ast_channel_unlock(p->owner); } } ast_mutex_unlock(&p->lock); return 0; } */ /*! \brief Initiate new call, part of PBX interface * dest is the dial string */ static int gtalk_call(struct ast_channel *ast, char *dest, int timeout) { struct gtalk_pvt *p = ast->tech_pvt; if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) { ast_log(LOG_WARNING, "gtalk_call called on %s, neither down nor reserved\n", ast->name); return -1; } ast_setstate(ast, AST_STATE_RING); if (!p->ringrule) { ast_copy_string(p->ring, p->parent->connection->mid, sizeof(p->ring)); p->ringrule = iks_filter_add_rule(p->parent->connection->f, gtalk_ringing_ack, p, IKS_RULE_ID, p->ring, IKS_RULE_DONE); } else ast_log(LOG_WARNING, "Whoa, already have a ring rule!\n"); gtalk_invite(p, p->them, p->us, p->sid, 1); gtalk_create_candidates(p->parent, p, p->sid, p->them, p->us); return 0; } /*! \brief Hangup a call through the gtalk proxy channel */ static int gtalk_hangup(struct ast_channel *ast) { struct gtalk_pvt *p = ast->tech_pvt; struct gtalk *client; ast_mutex_lock(&p->lock); client = p->parent; p->owner = NULL; ast->tech_pvt = NULL; if (!p->alreadygone) gtalk_action(client, p, "terminate"); ast_mutex_unlock(&p->lock); gtalk_free_pvt(client, p); ast_module_unref(ast_module_info->self); return 0; } /*! \brief Part of PBX interface */ static struct ast_channel *gtalk_request(const char *type, format_t format, const struct ast_channel *requestor, void *data, int *cause) { struct gtalk_pvt *p = NULL; struct gtalk *client = NULL; char *sender = NULL, *to = NULL, *s = NULL; struct ast_channel *chan = NULL; if (data) { s = ast_strdupa(data); if (s) { sender = strsep(&s, "/"); if (sender && (sender[0] != '\0')) to = strsep(&s, "/"); if (!to) { ast_log(LOG_ERROR, "Bad arguments in Gtalk Dialstring: %s\n", (char*) data); return NULL; } } } client = find_gtalk(to, sender); if (!client) { ast_log(LOG_WARNING, "Could not find recipient.\n"); return NULL; } if (!strcasecmp(client->name, "guest")){ /* the guest account is not tied to any configured XMPP client, let's set it now */ client->connection = ast_aji_get_client(sender); if (!client->connection) { ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", sender); ASTOBJ_UNREF(client, gtalk_member_destroy); return NULL; } } ASTOBJ_WRLOCK(client); p = gtalk_alloc(client, strchr(sender, '@') ? sender : client->connection->jid->full, strchr(to, '@') ? to : client->user, NULL); if (p) chan = gtalk_new(client, p, AST_STATE_DOWN, to, requestor ? requestor->linkedid : NULL); ASTOBJ_UNLOCK(client); return chan; } /*! \brief CLI command "gtalk show channels" */ static char *gtalk_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) { #define FORMAT "%-30.30s %-30.30s %-15.15s %-5.5s %-5.5s \n" struct gtalk_pvt *p; struct ast_channel *chan; int numchans = 0; char them[AJI_MAX_JIDLEN]; char *jid = NULL; char *resource = NULL; switch (cmd) { case CLI_INIT: e->command = "gtalk show channels"; e->usage = "Usage: gtalk show channels\n" " Shows current state of the Gtalk channels.\n"; return NULL; case CLI_GENERATE: return NULL; } if (a->argc != 3) return CLI_SHOWUSAGE; ast_mutex_lock(>alklock); ast_cli(a->fd, FORMAT, "Channel", "Jabber ID", "Resource", "Read", "Write"); ASTOBJ_CONTAINER_TRAVERSE(>alk_list, 1, { ASTOBJ_WRLOCK(iterator); p = iterator->p; while(p) { chan = p->owner; ast_copy_string(them, p->them, sizeof(them)); jid = them; resource = strchr(them, '/'); if (!resource) resource = "None"; else { *resource = '\0'; resource ++; } if (chan) ast_cli(a->fd, FORMAT, chan->name, jid, resource, ast_getformatname(chan->readformat), ast_getformatname(chan->writeformat) ); else ast_log(LOG_WARNING, "No available channel\n"); numchans ++; p = p->next; } ASTOBJ_UNLOCK(iterator); }); ast_mutex_unlock(>alklock); ast_cli(a->fd, "%d active gtalk channel%s\n", numchans, (numchans != 1) ? "s" : ""); return CLI_SUCCESS; #undef FORMAT } /*! \brief CLI command "gtalk reload" */ static char *gtalk_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) { switch (cmd) { case CLI_INIT: e->command = "gtalk reload"; e->usage = "Usage: gtalk reload\n" " Reload gtalk channel driver.\n"; return NULL; case CLI_GENERATE: return NULL; } ast_verbose("IT DOES WORK!\n"); return CLI_SUCCESS; } static int gtalk_parser(void *data, ikspak *pak) { struct gtalk *client = ASTOBJ_REF((struct gtalk *) data); if (iks_find_attrib(pak->x, "type") && !strcmp(iks_find_attrib (pak->x, "type"),"error")) { ast_log(LOG_NOTICE, "Remote peer reported an error, trying to establish the call anyway\n"); } else if (iks_find_with_attrib(pak->x, "session", "type", "initiate")) { /* New call */ gtalk_newcall(client, pak); } else if (iks_find_with_attrib(pak->x, "session", "type", "candidates") || iks_find_with_attrib(pak->x, "session", "type", "transport-info")) { ast_debug(3, "About to add candidate!\n"); gtalk_add_candidate(client, pak); ast_debug(3, "Candidate Added!\n"); } else if (iks_find_with_attrib(pak->x, "session", "type", "accept")) { gtalk_is_answered(client, pak); } else if (iks_find_with_attrib(pak->x, "session", "type", "transport-accept")) { gtalk_is_accepted(client, pak); } else if (iks_find_with_attrib(pak->x, "session", "type", "content-info") || iks_find_with_attrib(pak->x, "gtalk", "action", "session-info")) { gtalk_handle_dtmf(client, pak); } else if (iks_find_with_attrib(pak->x, "session", "type", "terminate")) { gtalk_hangup_farend(client, pak); } else if (iks_find_with_attrib(pak->x, "session", "type", "reject")) { gtalk_hangup_farend(client, pak); } ASTOBJ_UNREF(client, gtalk_member_destroy); return IKS_FILTER_EAT; } /* Not using this anymore probably take out soon static struct gtalk_candidate *gtalk_create_candidate(char *args) { char *name, *type, *preference, *protocol; struct gtalk_candidate *res; res = ast_calloc(1, sizeof(*res)); if (args) name = args; if ((args = strchr(args, ','))) { *args = '\0'; args++; preference = args; } if ((args = strchr(args, ','))) { *args = '\0'; args++; protocol = args; } if ((args = strchr(args, ','))) { *args = '\0'; args++; type = args; } if (name) ast_copy_string(res->name, name, sizeof(res->name)); if (preference) { res->preference = atof(preference); } if (protocol) { if (!strcasecmp("udp", protocol)) res->protocol = AJI_PROTOCOL_UDP; if (!strcasecmp("ssltcp", protocol)) res->protocol = AJI_PROTOCOL_SSLTCP; } if (type) { if (!strcasecmp("stun", type)) res->type = AJI_CONNECT_STUN; if (!strcasecmp("local", type)) res->type = AJI_CONNECT_LOCAL; if (!strcasecmp("relay", type)) res->type = AJI_CONNECT_RELAY; } return res; } */ static int gtalk_create_member(char *label, struct ast_variable *var, int allowguest, struct ast_codec_pref prefs, char *context, struct gtalk *member) { struct aji_client *client; if (!member) ast_log(LOG_WARNING, "Out of memory.\n"); ast_copy_string(member->name, label, sizeof(member->name)); ast_copy_string(member->user, label, sizeof(member->user)); ast_copy_string(member->context, context, sizeof(member->context)); member->allowguest = allowguest; member->prefs = prefs; while (var) { #if 0 struct gtalk_candidate *candidate = NULL; #endif if (!strcasecmp(var->name, "username")) ast_copy_string(member->user, var->value, sizeof(member->user)); else if (!strcasecmp(var->name, "disallow")) ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 0); else if (!strcasecmp(var->name, "allow")) ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 1); else if (!strcasecmp(var->name, "context")) ast_copy_string(member->context, var->value, sizeof(member->context)); else if (!strcasecmp(var->name, "parkinglot")) ast_copy_string(member->parkinglot, var->value, sizeof(member->parkinglot)); #if 0 else if (!strcasecmp(var->name, "candidate")) { candidate = gtalk_create_candidate(var->value); if (candidate) { candidate->next = member->ourcandidates; member->ourcandidates = candidate; } } #endif else if (!strcasecmp(var->name, "connection")) { if ((client = ast_aji_get_client(var->value))) { member->connection = client; iks_filter_add_rule(client->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_FROM_PARTIAL, member->user, IKS_RULE_NS, "http://www.google.com/session", IKS_RULE_DONE); } else { ast_log(LOG_ERROR, "connection referenced not found!\n"); return 0; } } var = var->next; } if (member->connection && member->user) member->buddy = ASTOBJ_CONTAINER_FIND(&member->connection->buddies, member->user); else { ast_log(LOG_ERROR, "No Connection or Username!\n"); } return 1; } static int gtalk_load_config(void) { char *cat = NULL; struct ast_config *cfg = NULL; char context[AST_MAX_CONTEXT]; char parkinglot[AST_MAX_CONTEXT]; int allowguest = 1; struct ast_variable *var; struct gtalk *member; struct ast_codec_pref prefs; struct aji_client_container *clients; struct gtalk_candidate *global_candidates = NULL; struct hostent *hp; struct ast_hostent ahp; struct ast_flags config_flags = { 0 }; cfg = ast_config_load(GOOGLE_CONFIG, config_flags); if (!cfg) { return 0; } else if (cfg == CONFIG_STATUS_FILEINVALID) { ast_log(LOG_ERROR, "Config file %s is in an invalid format. Aborting.\n", GOOGLE_CONFIG); return 0; } /* Copy the default jb config over global_jbconf */ memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf)); cat = ast_category_browse(cfg, NULL); for (var = ast_variable_browse(cfg, "general"); var; var = var->next) { /* handle jb conf */ if (!ast_jb_read_conf(&global_jbconf, var->name, var->value)) continue; if (!strcasecmp(var->name, "allowguest")) allowguest = (ast_true(ast_variable_retrieve(cfg, "general", "allowguest"))) ? 1 : 0; else if (!strcasecmp(var->name, "disallow")) ast_parse_allow_disallow(&prefs, &global_capability, var->value, 0); else if (!strcasecmp(var->name, "allow")) ast_parse_allow_disallow(&prefs, &global_capability, var->value, 1); else if (!strcasecmp(var->name, "context")) ast_copy_string(context, var->value, sizeof(context)); else if (!strcasecmp(var->name, "parkinglot")) ast_copy_string(parkinglot, var->value, sizeof(parkinglot)); else if (!strcasecmp(var->name, "bindaddr")) { if (!(hp = ast_gethostbyname(var->value, &ahp))) { ast_log(LOG_WARNING, "Invalid address: %s\n", var->value); } else { memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr)); } } /* Idea to allow for custom candidates */ /* else if (!strcasecmp(var->name, "candidate")) { candidate = gtalk_create_candidate(var->value); if (candidate) { candidate->next = global_candidates; global_candidates = candidate; } } */ } while (cat) { if (strcasecmp(cat, "general")) { var = ast_variable_browse(cfg, cat); member = ast_calloc(1, sizeof(*member)); ASTOBJ_INIT(member); ASTOBJ_WRLOCK(member); if (!strcasecmp(cat, "guest")) { ast_copy_string(member->name, "guest", sizeof(member->name)); ast_copy_string(member->user, "guest", sizeof(member->user)); ast_copy_string(member->context, context, sizeof(member->context)); ast_copy_string(member->parkinglot, parkinglot, sizeof(member->parkinglot)); member->allowguest = allowguest; member->prefs = prefs; while (var) { if (!strcasecmp(var->name, "disallow")) ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 0); else if (!strcasecmp(var->name, "allow")) ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 1); else if (!strcasecmp(var->name, "context")) ast_copy_string(member->context, var->value, sizeof(member->context)); else if (!strcasecmp(var->name, "parkinglot")) ast_copy_string(member->parkinglot, var->value, sizeof(member->parkinglot)); /* Idea to allow for custom candidates */ /* else if (!strcasecmp(var->name, "candidate")) { candidate = gtalk_create_candidate(var->value); if (candidate) { candidate->next = member->ourcandidates; member->ourcandidates = candidate; } } */ var = var->next; } ASTOBJ_UNLOCK(member); clients = ast_aji_get_clients(); if (clients) { ASTOBJ_CONTAINER_TRAVERSE(clients, 1, { ASTOBJ_WRLOCK(iterator); ASTOBJ_WRLOCK(member); member->connection = NULL; iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, "http://www.google.com/session", IKS_RULE_DONE); iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, "http://jabber.org/protocol/gtalk", IKS_RULE_DONE); ASTOBJ_UNLOCK(member); ASTOBJ_UNLOCK(iterator); }); ASTOBJ_CONTAINER_LINK(>alk_list, member); ASTOBJ_UNREF(member, gtalk_member_destroy); } else { ASTOBJ_UNLOCK(member); ASTOBJ_UNREF(member, gtalk_member_destroy); } } else { ASTOBJ_UNLOCK(member); if (gtalk_create_member(cat, var, allowguest, prefs, context, member)) ASTOBJ_CONTAINER_LINK(>alk_list, member); ASTOBJ_UNREF(member, gtalk_member_destroy); } } cat = ast_category_browse(cfg, cat); } gtalk_free_candidates(global_candidates); return 1; } /*! \brief Load module into PBX, register channel */ static int load_module(void) { struct ast_sockaddr bindaddr_tmp; struct ast_sockaddr ourip_tmp; char *jabber_loaded = ast_module_helper("", "res_jabber.so", 0, 0, 0, 0); free(jabber_loaded); if (!jabber_loaded) { /* If embedded, check for a different module name */ jabber_loaded = ast_module_helper("", "res_jabber", 0, 0, 0, 0); free(jabber_loaded); if (!jabber_loaded) { ast_log(LOG_ERROR, "chan_gtalk.so depends upon res_jabber.so\n"); return AST_MODULE_LOAD_DECLINE; } } ASTOBJ_CONTAINER_INIT(>alk_list); if (!gtalk_load_config()) { ast_log(LOG_ERROR, "Unable to read config file %s. Not loading module.\n", GOOGLE_CONFIG); return 0; } sched = sched_context_create(); if (!sched) ast_log(LOG_WARNING, "Unable to create schedule context\n"); io = io_context_create(); if (!io) ast_log(LOG_WARNING, "Unable to create I/O context\n"); ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr); if (ast_find_ourip(&ourip_tmp, &bindaddr_tmp)) { ast_log(LOG_WARNING, "Unable to get own IP address, Gtalk disabled\n"); return 0; } __ourip.s_addr = htonl(ast_sockaddr_ipv4(&ourip_tmp)); ast_rtp_glue_register(>alk_rtp_glue); ast_cli_register_multiple(gtalk_cli, ARRAY_LEN(gtalk_cli)); /* Make sure we can register our channel type */ if (ast_channel_register(>alk_tech)) { ast_log(LOG_ERROR, "Unable to register channel class %s\n", gtalk_tech.type); return -1; } return 0; } /*! \brief Reload module */ static int reload(void) { return 0; } /*! \brief Unload the gtalk channel from Asterisk */ static int unload_module(void) { struct gtalk_pvt *privates = NULL; ast_cli_unregister_multiple(gtalk_cli, ARRAY_LEN(gtalk_cli)); /* First, take us out of the channel loop */ ast_channel_unregister(>alk_tech); ast_rtp_glue_unregister(>alk_rtp_glue); if (!ast_mutex_lock(>alklock)) { /* Hangup all interfaces if they have an owner */ ASTOBJ_CONTAINER_TRAVERSE(>alk_list, 1, { ASTOBJ_WRLOCK(iterator); privates = iterator->p; while(privates) { if (privates->owner) ast_softhangup(privates->owner, AST_SOFTHANGUP_APPUNLOAD); privates = privates->next; } iterator->p = NULL; ASTOBJ_UNLOCK(iterator); }); ast_mutex_unlock(>alklock); } else { ast_log(LOG_WARNING, "Unable to lock the monitor\n"); return -1; } ASTOBJ_CONTAINER_DESTROYALL(>alk_list, gtalk_member_destroy); ASTOBJ_CONTAINER_DESTROY(>alk_list); return 0; } AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Gtalk Channel Driver", .load = load_module, .unload = unload_module, .reload = reload, );