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Diffstat (limited to 'channels/chan_gtalk.c')
| -rw-r--r-- | channels/chan_gtalk.c | 2447 |
1 files changed, 0 insertions, 2447 deletions
diff --git a/channels/chan_gtalk.c b/channels/chan_gtalk.c deleted file mode 100644 index 7427fe138..000000000 --- a/channels/chan_gtalk.c +++ /dev/null @@ -1,2447 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2005, Digium, Inc. - * - * Matt O'Gorman <mogorman@digium.com> - * Philippe Sultan <philippe.sultan@gmail.com> - * - * 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 <mogorman@digium.com> - * \author Philippe Sultan <philippe.sultan@gmail.com> - * - * \brief Gtalk Channel Driver, until google/libjingle works with jingle spec - * - * \ingroup channel_drivers - * - * ********** General TODO:s - * \todo Support config reloading. - * \todo Fix native bridging. - */ - -/*! \li \ref chan_gtalk.c uses the configuration file \ref gtalk.conf - * \addtogroup configuration_file - */ - -/*! \page gtalk.conf gtalk.conf - * \verbinclude gtalk.conf.sample - */ - -/*** MODULEINFO - <defaultenabled>no</defaultenabled> - <depend>iksemel</depend> - <depend>res_jabber</depend> - <use type="external">openssl</use> - <support_level>deprecated</support_level> - <replacement>chan_motif</replacement> - ***/ - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include <sys/socket.h> -#include <fcntl.h> -#include <netdb.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <sys/signal.h> -#include <iksemel.h> -#include <pthread.h> -#include <ctype.h> - -#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" -#include "asterisk/jingle.h" -#include "asterisk/parking.h" -#include "asterisk/stasis_channels.h" - -#define GOOGLE_CONFIG "gtalk.conf" - -/*! 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; - 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 */ - struct ast_format_cap *cap; - struct ast_format_cap *jointcap; /*!< Supported capability at both ends (codecs ) */ - struct ast_format_cap *peercap; - 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 */ - struct ast_format_cap *cap; - 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 const char DEFAULT_CONTEXT[] = "default"; -static const int DEFAULT_ALLOWGUEST = 1; - -static struct ast_format_cap *global_capability; - -AST_MUTEX_DEFINE_STATIC(gtalklock); /*!< Protect the interface list (of gtalk_pvt's) */ - -/* Forward declarations */ -static struct ast_channel *gtalk_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *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, const 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 int gtalk_update_stun(struct gtalk *client, struct gtalk_pvt *p); -/* 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); -static char *gtalk_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a); -static int gtalk_update_externip(void); -static int gtalk_parser(void *data, ikspak *pak); -static int gtalk_create_candidates(struct gtalk *client, struct gtalk_pvt *p, char *sid, char *from, char *to); -static void gtalk_set_owner(struct gtalk_pvt *p, struct ast_channel *chan); - -/*! \brief PBX interface structure for channel registration */ -static struct ast_channel_tech gtalk_tech = { - .type = "Gtalk", - .description = "Gtalk Channel Driver", - .requester = gtalk_request, - .send_text = gtalk_sendtext, - .send_digit_begin = gtalk_digit_begin, - .send_digit_end = gtalk_digit_end, - /* XXX TODO native bridging is causing odd problems with DTMF pass-through with - * the gtalk servers. Enable native bridging once the source of this problem has - * been identified. - .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 ast_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"), XXX TODO reloads are not possible yet. */ - AST_CLI_DEFINE(gtalk_show_channels, "Show GoogleTalk channels"), - AST_CLI_DEFINE(gtalk_show_settings, "Show GoogleTalk global settings"), -}; - -static char externip[16]; -static char global_context[AST_MAX_CONTEXT]; -static char global_parkinglot[AST_MAX_CONTEXT]; -static int global_allowguest; -static struct sockaddr_in stunaddr; /*!< the stun server we get the externip from */ -static int global_stunaddr; - -static struct gtalk_container gtalk_list; - -static void gtalk_member_destroy(struct gtalk *obj) -{ - obj->cap = ast_format_cap_destroy(obj->cap); - if (obj->connection) { - ASTOBJ_UNREF(obj->connection, ast_aji_client_destroy); - } - if (obj->buddy) { - ASTOBJ_UNREF(obj->buddy, ast_aji_buddy_destroy); - } - ast_free(obj); -} - -/* XXX This could be a source of reference leaks given that the CONTAINER_FIND - * macros bump the refcount while the traversal does not. */ -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, struct ast_format *codec, iks *dcodecs) -{ - int res = 0; - const 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\n"); - 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\n"); - 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\n"); - 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\n"); - 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\n"); - 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\n"); - 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; - struct ast_format_cap *alreadysent; - int codecs_num = 0; - char *lowerto = NULL; - struct ast_format tmpfmt; - - 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", GOOGLE_AUDIO_NS); - iks_insert_attrib(dcodecs, "xml:lang", "en"); - - if (!(alreadysent = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK))) { - return 0; - } - for (x = 0; x < AST_CODEC_PREF_SIZE; x++) { - if (!(ast_codec_pref_index(&client->prefs, x, &tmpfmt))) { - break; - } - if (!(ast_format_cap_iscompatible(client->cap, &tmpfmt))) { - continue; - } - if (ast_format_cap_iscompatible(alreadysent, &tmpfmt)) { - continue; - } - codecs_num = add_codec_to_answer(p, &tmpfmt, dcodecs); - ast_format_cap_add(alreadysent, &tmpfmt); - } - alreadysent = ast_format_cap_destroy(alreadysent); - - if (codecs_num) { - /* only propose DTMF within an audio session */ - iks_insert_attrib(payload_telephone, "id", "101"); - iks_insert_attrib(payload_telephone, "name", "telephone-event"); - iks_insert_attrib(payload_telephone, "clockrate", "8000"); - } - iks_insert_attrib(transport,"xmlns",GOOGLE_TRANSPORT_NS); - - 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", GOOGLE_NS); - 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(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_ringing_ack(void *data, ikspak *pak) -{ - struct gtalk_pvt *p = data; - struct ast_channel *owner; - - ast_mutex_lock(&p->lock); - - if (p->ringrule) { - iks_filter_remove_rule(p->parent->connection->f, p->ringrule); - } - p->ringrule = NULL; - - /* this may be a redirect */ - if (!strcmp(S_OR(iks_find_attrib(pak->x, "type"), ""), "error")) { - char *name = NULL; - char *redirect = NULL; - iks *traversenodes = NULL; - traversenodes = pak->query; - while (traversenodes) { - if (!(name = iks_name(traversenodes))) { - break; - } - if (!strcasecmp(name, "error") && - ((redirect = iks_find_cdata(traversenodes, "redirect")) || - (redirect = iks_find_cdata(traversenodes, "sta:redirect"))) && - (redirect = strstr(redirect, "xmpp:"))) { - redirect += 5; - ast_debug(1, "redirect %s\n", redirect); - ast_copy_string(p->them, redirect, sizeof(p->them)); - - gtalk_invite(p, p->them, p->us, p->sid, 1); - break; - } - traversenodes = iks_next_tag(traversenodes); - } - } - gtalk_create_candidates(p->parent, p, p->sid, p->them, p->us); - owner = p->owner; - ast_mutex_unlock(&p->lock); - - if (owner) { - ast_queue_control(owner, AST_CONTROL_RINGING); - } - - return IKS_FILTER_EAT; -} - -static int gtalk_answer(struct ast_channel *ast) -{ - struct gtalk_pvt *p = ast_channel_tech_pvt(ast); - int res = 0; - - ast_debug(1, "Answer!\n"); - ast_mutex_lock(&p->lock); - gtalk_invite(p, p->them, p->us,p->sid, 0); - 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 = ast_channel_tech_pvt(chan); - 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 void gtalk_get_codec(struct ast_channel *chan, struct ast_format_cap *result) -{ - struct gtalk_pvt *p = ast_channel_tech_pvt(chan); - ast_mutex_lock(&p->lock); - ast_format_cap_copy(result, p->peercap); - ast_mutex_unlock(&p->lock); -} - -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, const struct ast_format_cap *cap, int nat_active) -{ - struct gtalk_pvt *p; - - p = ast_channel_tech_pvt(chan); - 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", S_OR(iks_find_attrib(pak->x, "from"), "")); - iks_insert_attrib(response, "id", S_OR(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 = NULL; - char *from; - iks *codec; - char s1[BUFSIZ], s2[BUFSIZ], s3[BUFSIZ]; - int peernoncodeccapability; - - ast_debug(1, "The client is %s\n", client->name); - - /* Make sure our new call does exist */ - for (tmp = client->p; tmp; tmp = tmp->next) { - if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) { - break; - } else if (iks_find_with_attrib(pak->x, "ses:session", "id", tmp->sid)) { - break; - } - } - - if (!tmp) { - ast_log(LOG_WARNING, "Could not find session in iq\n"); - return -1; - } - - /* codec points to the first <payload-type/> tag */ - codec = iks_first_tag(iks_first_tag(iks_first_tag(pak->x))); - while (codec) { - char *codec_id = iks_find_attrib(codec, "id"); - char *codec_name = iks_find_attrib(codec, "name"); - if (!codec_id || !codec_name) { - codec = iks_next_tag(codec); - continue; - } - - ast_rtp_codecs_payloads_set_m_type( - ast_rtp_instance_get_codecs(tmp->rtp), - tmp->rtp, - atoi(codec_id)); - ast_rtp_codecs_payloads_set_rtpmap_type( - ast_rtp_instance_get_codecs(tmp->rtp), - tmp->rtp, - atoi(codec_id), - "audio", - 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->peercap, &peernoncodeccapability); - - /* at this point, we received an answer from the remote Gtalk client, - which allows us to compare capabilities */ - ast_format_cap_joint_copy(tmp->cap, tmp->peercap, tmp->jointcap); - if (ast_format_cap_is_empty(tmp->jointcap)) { - ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, tmp->cap), - ast_getformatname_multiple(s2, BUFSIZ, tmp->peercap), - ast_getformatname_multiple(s3, BUFSIZ, tmp->jointcap)); - /* 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->owner) { - ast_queue_control(tmp->owner, AST_CONTROL_ANSWER); - } - gtalk_update_stun(tmp->parent, tmp); - 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_debug(1, "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) { - gtalk_update_stun(tmp->parent, tmp); - } else { - ast_log(LOG_NOTICE, "Whoa, didn't find call during accept?!\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) || - (iks_find_attrib(pak->query, "id") && !strcmp(iks_find_attrib(pak->query, "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 during hangup!\n"); - } - gtalk_response(client, from, pak, NULL, NULL); - return 1; -} - -static int gtalk_get_local_ip(struct ast_sockaddr *ourip) -{ - struct ast_sockaddr root; - struct ast_sockaddr bindaddr_tmp; - struct ast_sockaddr *addrs; - - /* If bind address is not 0.0.0.0, then bindaddr is our local ip. */ - ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr); - if (!ast_sockaddr_is_any(&bindaddr_tmp)) { - ast_sockaddr_copy(ourip, &bindaddr_tmp); - return 0; - } - - /* If no bind address was provided, lets see what ip we would use to connect to google.com and use that. - * If you can't resolve google.com from your network, then this module is useless for you anyway. */ - if (ast_sockaddr_resolve(&addrs, "google.com", PARSE_PORT_FORBID, AF_INET) > 0) { - ast_sockaddr_copy(&root, &addrs[0]); - ast_free(addrs); - if (!ast_ouraddrfor(&root, ourip)) { - return 0; - } - } - - /* As a last resort, use this function to find our local address. */ - return ast_find_ourip(ourip, &bindaddr_tmp, AF_INET); -} - -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 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",GOOGLE_TRANSPORT_NS); - iks_insert_node(iq, gtalk); - iks_insert_node(gtalk,candidate); - iks_insert_node(gtalk,transport); - - 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); - - gtalk_get_local_ip(&us); - - 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.\n"); - } - - /* 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", (long unsigned)ast_random(), (long unsigned)ast_random()); - snprintf(pass, sizeof(pass), "%08lx%08lx", (long unsigned)ast_random(), (long unsigned)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; - - /* XXX this is a blocking action. We send a STUN request to the server - * and wait for the response. If blocking here is a problem the STUN requests/responses - * for the externip may need to be done differently. */ - gtalk_update_externip(); - if (!ast_strlen_zero(externip)) { - 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; - - 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", "candidates"); - 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 cur; - char *t = lowerfrom = ast_strdupa(from); - while (((cur = *t) != '/') && (*t++ = tolower(cur))); - } - 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 void gtalk_set_owner(struct gtalk_pvt *p, struct ast_channel *chan) -{ - p->owner = chan; - if (p->rtp) { - ast_rtp_instance_set_channel_id(p->rtp, chan ? ast_channel_uniqueid(chan) : ""); - } - if (p->vrtp) { - ast_rtp_instance_set_channel_id(p->vrtp, chan ? ast_channel_uniqueid(chan) : ""); - } -} - -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 = NULL; - 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 if ((*them == '+') || (strstr(them, "@voice.google.com"))) { - snprintf(idroster, sizeof(idroster), "%s", them); - } else { - ast_log(LOG_ERROR, "no gtalk capable clients to talk to.\n"); - if (buddy) { - ASTOBJ_UNREF(buddy, ast_aji_buddy_destroy); - } - return NULL; - } - if (buddy) { - ASTOBJ_UNREF(buddy, ast_aji_buddy_destroy); - } - } - if (!(tmp = ast_calloc(1, sizeof(*tmp)))) { - return NULL; - } - tmp->cap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK); - tmp->jointcap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK); - tmp->peercap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK); - if (!tmp->jointcap || !tmp->peercap || !tmp->cap) { - tmp->cap = ast_format_cap_destroy(tmp->cap); - tmp->jointcap = ast_format_cap_destroy(tmp->jointcap); - tmp->peercap = ast_format_cap_destroy(tmp->peercap); - ast_free(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", (long unsigned)ast_random(), (long unsigned)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 */ - bindaddr.sin_family = AF_INET; - 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_instance_set_prop(tmp->rtp, AST_RTP_PROPERTY_STUN, 1); - ast_rtp_instance_set_prop(tmp->rtp, AST_RTP_PROPERTY_DTMF, 1); - ast_rtp_instance_dtmf_mode_set(tmp->rtp, AST_RTP_DTMF_MODE_RFC2833); - ast_rtp_codecs_payloads_clear(ast_rtp_instance_get_codecs(tmp->rtp), tmp->rtp); - - /* add user configured codec capabilites */ - if (!(ast_format_cap_is_empty(client->cap))) { - ast_format_cap_copy(tmp->cap, client->cap); - } else if (!(ast_format_cap_is_empty(global_capability))) { - ast_format_cap_copy(tmp->cap, 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 struct ast_assigned_ids *assignedids, const struct ast_channel *requestor) -{ - struct ast_channel *tmp; - const char *n2; - struct ast_format_cap *what; /* used as SHALLOW COPY DO NOT DESTROY */ - struct ast_format tmpfmt; - - if (title) - n2 = title; - else - n2 = i->us; - tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, client->accountcode, i->exten, client->context, assignedids, requestor, client->amaflags, "Gtalk/%s-%04lx", n2, ast_random() & 0xffff); - if (!tmp) { - ast_log(LOG_WARNING, "Unable to allocate Gtalk channel structure!\n"); - return NULL; - } - - ast_channel_stage_snapshot(tmp); - - ast_channel_tech_set(tmp, >alk_tech); - - /* Select our native format based on codec preference until we receive - something from another device to the contrary. */ - if (!(ast_format_cap_is_empty(i->jointcap))) { - what = i->jointcap; - } else if (i->cap) { - what = i->cap; - } 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); - } - - ast_codec_choose(&i->prefs, what, 1, &tmpfmt); - ast_format_cap_add(ast_channel_nativeformats(tmp), &tmpfmt); - - ast_format_cap_iter_start(i->jointcap); - while (!(ast_format_cap_iter_next(i->jointcap, &tmpfmt))) { - if (AST_FORMAT_GET_TYPE(tmpfmt.id) == AST_FORMAT_TYPE_VIDEO) { - ast_format_cap_add(ast_channel_nativeformats(tmp), &tmpfmt); - } - } - ast_format_cap_iter_end(i->jointcap); - - if (i->rtp) { - 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_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) - ast_channel_rings_set(tmp, 1); - ast_channel_adsicpe_set(tmp, AST_ADSI_UNAVAILABLE); - - ast_best_codec(ast_channel_nativeformats(tmp), &tmpfmt); - ast_format_copy(ast_channel_writeformat(tmp), &tmpfmt); - ast_format_copy(ast_channel_rawwriteformat(tmp), &tmpfmt); - ast_format_copy(ast_channel_readformat(tmp), &tmpfmt); - ast_format_copy(ast_channel_rawreadformat(tmp), &tmpfmt); - ast_channel_tech_pvt_set(tmp, i); - - ast_channel_callgroup_set(tmp, client->callgroup); - ast_channel_pickupgroup_set(tmp, client->pickupgroup); - ast_channel_caller(tmp)->id.name.presentation = client->callingpres; - ast_channel_caller(tmp)->id.number.presentation = client->callingpres; - if (!ast_strlen_zero(client->accountcode)) - ast_channel_accountcode_set(tmp, client->accountcode); - if (client->amaflags) - ast_channel_amaflags_set(tmp, client->amaflags); - if (!ast_strlen_zero(client->language)) - ast_channel_language_set(tmp, client->language); - if (!ast_strlen_zero(client->musicclass)) - ast_channel_musicclass_set(tmp, client->musicclass); - if (!ast_strlen_zero(client->parkinglot)) - ast_channel_parkinglot_set(tmp, client->parkinglot); - gtalk_set_owner(i, tmp); - ast_module_ref(ast_module_info->self); - ast_channel_context_set(tmp, client->context); - ast_channel_exten_set(tmp, i->exten); - - if (!ast_strlen_zero(i->exten) && strcmp(i->exten, "s")) { - ast_channel_dialed(tmp)->number.str = ast_strdup(i->exten); - } - ast_channel_priority_set(tmp, 1); - if (i->rtp) - ast_jb_configure(tmp, &global_jbconf); - - ast_channel_stage_snapshot_done(tmp); - ast_channel_unlock(tmp); - - if (state != AST_STATE_DOWN && ast_pbx_start(tmp)) { - ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ast_channel_name(tmp)); - ast_channel_hangupcause_set(tmp, AST_CAUSE_SWITCH_CONGESTION); - ast_hangup(tmp); - tmp = NULL; - } - 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", GOOGLE_NS); - 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); - p->cap = ast_format_cap_destroy(p->cap); - p->jointcap = ast_format_cap_destroy(p->jointcap); - p->peercap = ast_format_cap_destroy(p->peercap); - 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; - char *sid; - - /* 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) || - (iks_find_attrib(pak->query, "id") && !strcmp(iks_find_attrib(pak->query, "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 */ - if (client->connection) { - ASTOBJ_UNREF(client->connection, ast_aji_client_destroy); - } - 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; - } - } - - if (!(sid = iks_find_attrib(pak->query, "id"))) { - ast_log(LOG_WARNING, "Received Initiate without id attribute. Can not start call.\n"); - return -1; - } - - p = gtalk_alloc(client, from, pak->from->full, sid); - 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, 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)); - ast_copy_string(p->sid, sid, sizeof(p->sid)); - - /* codec points to the first <payload-type/> tag */ - codec = iks_first_tag(iks_first_tag(pak->query)); - - while (codec) { - char *codec_id = iks_find_attrib(codec, "id"); - char *codec_name = iks_find_attrib(codec, "name"); - if (!codec_id || !codec_name) { - codec = iks_next_tag(codec); - continue; - } - if (!strcmp(S_OR(iks_name(codec), ""), "vid:payload-type") && p->vrtp) { - ast_rtp_codecs_payloads_set_m_type( - ast_rtp_instance_get_codecs(p->vrtp), - p->vrtp, - atoi(codec_id)); - ast_rtp_codecs_payloads_set_rtpmap_type( - ast_rtp_instance_get_codecs(p->vrtp), - p->vrtp, - atoi(codec_id), - "video", - codec_name, - 0); - } else { - ast_rtp_codecs_payloads_set_m_type( - ast_rtp_instance_get_codecs(p->rtp), - p->rtp, - atoi(codec_id)); - ast_rtp_codecs_payloads_set_rtpmap_type( - ast_rtp_instance_get_codecs(p->rtp), - p->rtp, - atoi(codec_id), - "audio", - 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->peercap, &peernoncodeccapability); - ast_format_cap_joint_copy(p->cap, p->peercap, p->jointcap); - ast_mutex_unlock(&p->lock); - - ast_channel_lock(chan); - ast_setstate(chan, AST_STATE_RING); - ast_channel_unlock(chan); - if (ast_format_cap_is_empty(p->jointcap)) { - ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, p->cap), - ast_getformatname_multiple(s2, BUFSIZ, p->peercap), - ast_getformatname_multiple(s3, BUFSIZ, p->jointcap)); - /* 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_create_candidates(client, p, p->sid, p->them, p->us); - /* nothing to do */ - break; - } - - return 1; -} - -static int gtalk_update_externip(void) -{ - int sock; - char *newaddr; - struct sockaddr_in answer = { 0, }; - struct sockaddr_in *dst; - struct ast_sockaddr tmp_dst; - - if (!stunaddr.sin_addr.s_addr) { - return -1; - } - dst = &stunaddr; - - sock = socket(AF_INET, SOCK_DGRAM, 0); - if (sock < 0) { - ast_log(LOG_WARNING, "Unable to create STUN socket: %s\n", strerror(errno)); - return -1; - } - - ast_sockaddr_from_sin(&tmp_dst, dst); - if (ast_connect(sock, &tmp_dst) != 0) { - ast_log(LOG_WARNING, "STUN Failed to connect to %s\n", ast_sockaddr_stringify(&tmp_dst)); - close(sock); - return -1; - } - - if ((ast_stun_request(sock, &stunaddr, NULL, &answer))) { - close(sock); - return -1; - } - - newaddr = ast_strdupa(ast_inet_ntoa(answer.sin_addr)); - memcpy(externip, newaddr, sizeof(externip)); - - close(sock); - return 0; - -} - -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 */ - if (!(hp = ast_gethostbyname(tmp->ip, &ahp))) { - ast_log(LOG_WARNING, "Could not get host by name for %s\n", tmp->ip); - tmp = tmp->next; - continue; - } - 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_sockaddr_from_sin(&sin_tmp, &sin); - 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) || - (iks_find_attrib(pak->query, "id") && !strcmp(iks_find_attrib(pak->query, "id"), tmp->sid))) { - p = tmp; - break; - } - } - - if (!p) { - return -1; - } - traversenodes = pak->query; - while(traversenodes) { - if(!strcasecmp(S_OR(iks_name(traversenodes), ""), "session")) { - traversenodes = iks_first_tag(traversenodes); - continue; - } - if(!strcasecmp(S_OR(iks_name(traversenodes), ""), "ses:session")) { - traversenodes = iks_child(traversenodes); - continue; - } - if(!strcasecmp(S_OR(iks_name(traversenodes), ""), "candidate") || !strcasecmp(S_OR(iks_name(traversenodes), ""), "ses:candidate")) { - newcandidate = ast_calloc(1, sizeof(*newcandidate)); - if (!newcandidate) - return 0; - ast_copy_string(newcandidate->name, - S_OR(iks_find_attrib(traversenodes, "name"), ""), - sizeof(newcandidate->name)); - ast_copy_string(newcandidate->ip, - S_OR(iks_find_attrib(traversenodes, "address"), ""), - sizeof(newcandidate->ip)); - newcandidate->port = atoi(iks_find_attrib(traversenodes, "port")); - ast_copy_string(newcandidate->username, - S_OR(iks_find_attrib(traversenodes, "username"), ""), - sizeof(newcandidate->username)); - ast_copy_string(newcandidate->password, - S_OR(iks_find_attrib(traversenodes, "password"), ""), - sizeof(newcandidate->password)); - newcandidate->preference = atof(iks_find_attrib(traversenodes, "preference")); - if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "protocol"), ""), "udp")) - newcandidate->protocol = AJI_PROTOCOL_UDP; - if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "protocol"), ""), "ssltcp")) - newcandidate->protocol = AJI_PROTOCOL_SSLTCP; - - if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "type"), ""), "stun")) - newcandidate->type = AJI_CONNECT_STUN; - if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "type"), ""), "local")) - newcandidate->type = AJI_CONNECT_LOCAL; - if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "type"), ""), "relay")) - newcandidate->type = AJI_CONNECT_RELAY; - ast_copy_string(newcandidate->network, - S_OR(iks_find_attrib(traversenodes, "network"), ""), - sizeof(newcandidate->network)); - newcandidate->generation = atoi(S_OR(iks_find_attrib(traversenodes, "generation"), "0")); - 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", S_OR(iks_find_attrib(pak->x, "from"), "")); - iks_insert_attrib(receipt, "id", S_OR(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 (!ast_format_cap_iscompatible(ast_channel_nativeformats(p->owner), &f->subclass.format)) { - ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(&f->subclass.format)); - ast_format_cap_remove_bytype(ast_channel_nativeformats(p->owner), AST_FORMAT_TYPE_AUDIO); - ast_format_cap_add(ast_channel_nativeformats(p->owner), &f->subclass.format); - ast_set_read_format(p->owner, ast_channel_readformat(p->owner)); - ast_set_write_format(p->owner, ast_channel_writeformat(p->owner)); - } - /* 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_channel_tech_pvt(ast); - - 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_channel_tech_pvt(ast); - int res = 0; - char buf[256]; - - switch (frame->frametype) { - case AST_FRAME_VOICE: - if (!(ast_format_cap_iscompatible(ast_channel_nativeformats(ast), &frame->subclass.format))) { - ast_log(LOG_WARNING, - "Asked to transmit frame type %s, while native formats is %s (read/write = %s/%s)\n", - ast_getformatname(&frame->subclass.format), - ast_getformatname_multiple(buf, sizeof(buf), ast_channel_nativeformats(ast)), - ast_getformatname(ast_channel_readformat(ast)), - ast_getformatname(ast_channel_writeformat(ast))); - 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 %u 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 = ast_channel_tech_pvt(newchan); - ast_mutex_lock(&p->lock); - - if ((p->owner != oldchan)) { - ast_mutex_unlock(&p->lock); - return -1; - } - if (p->owner == oldchan) { - gtalk_set_owner(p, 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_debug(3, "Don't know how to indicate condition '%d'\n", condition); - /* fallthrough */ - case AST_CONTROL_PVT_CAUSE_CODE: - 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 = ast_channel_tech_pvt(chan); - - 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) -{ - struct gtalk_pvt *p = ast_channel_tech_pvt(chan); - int res = 0; - - ast_mutex_lock(&p->lock); - if (p->rtp) { - ast_rtp_instance_dtmf_begin(p->rtp, digit); - } else { - res = -1; - } - ast_mutex_unlock(&p->lock); - - return res; -} - -static int gtalk_digit_end(struct ast_channel *chan, char digit, unsigned int duration) -{ - struct gtalk_pvt *p = ast_channel_tech_pvt(chan); - int res = 0; - - ast_mutex_lock(&p->lock); - if (p->rtp) { - ast_rtp_instance_dtmf_end_with_duration(p->rtp, digit, duration); - } else { - res = -1; - } - ast_mutex_unlock(&p->lock); - - return res; -} - -/* This function is of not in use at the moment, but I am choosing to leave this - * within the code base as a reference to how DTMF is possible through - * jingle signaling. However, google currently does DTMF through the RTP. */ -#if 0 -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; -} -#endif - -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; -} - -/*!\brief Initiate new call, part of PBX interface - * dest is the dial string */ -static int gtalk_call(struct ast_channel *ast, const char *dest, int timeout) -{ - struct gtalk_pvt *p = ast_channel_tech_pvt(ast); - - if ((ast_channel_state(ast) != AST_STATE_DOWN) && (ast_channel_state(ast) != AST_STATE_RESERVED)) { - ast_log(LOG_WARNING, "gtalk_call called on %s, neither down nor reserved\n", ast_channel_name(ast)); - 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); - - return 0; -} - -/*! \brief Hangup a call through the gtalk proxy channel */ -static int gtalk_hangup(struct ast_channel *ast) -{ - struct gtalk_pvt *p = ast_channel_tech_pvt(ast); - struct gtalk *client; - - ast_mutex_lock(&p->lock); - client = p->parent; - gtalk_set_owner(p, NULL); - ast_channel_tech_pvt_set(ast, 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, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *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); - sender = strsep(&s, "/"); - if (sender && (sender[0] != '\0')) { - to = strsep(&s, "/"); - } - if (!to) { - ast_log(LOG_ERROR, "Bad arguments in Gtalk Dialstring: %s\n", data); - return NULL; - } - 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 */ - if (client->connection) { - ASTOBJ_UNREF(client->connection, ast_aji_client_destroy); - } - 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, assignedids, requestor); - } - 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, - ast_channel_name(chan), - jid, - resource, - ast_getformatname(ast_channel_readformat(chan)), - ast_getformatname(ast_channel_writeformat(chan)) - ); - 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 List global settings for the GoogleTalk channel */ -static char *gtalk_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) -{ - char codec_buf[BUFSIZ]; - switch (cmd) { - case CLI_INIT: - e->command = "gtalk show settings"; - e->usage = - "Usage: gtalk show settings\n" - " Provides detailed list of the configuration on the GoogleTalk channel.\n"; - return NULL; - case CLI_GENERATE: - return NULL; - } - - if (a->argc != 3) { - return CLI_SHOWUSAGE; - } - -#define FORMAT " %-25.20s %-15.30s\n" - - ast_cli(a->fd, "\nGlobal Settings:\n"); - ast_cli(a->fd, "----------------\n"); - ast_cli(a->fd, FORMAT, "UDP Bindaddress:", ast_inet_ntoa(bindaddr.sin_addr)); - ast_cli(a->fd, FORMAT, "Stun Address:", global_stunaddr != 0 ? ast_inet_ntoa(stunaddr.sin_addr) : "Disabled"); - ast_cli(a->fd, FORMAT, "External IP:", S_OR(externip, "Disabled")); - ast_cli(a->fd, FORMAT, "Context:", global_context); - ast_cli(a->fd, FORMAT, "Codecs:", ast_getformatname_multiple(codec_buf, sizeof(codec_buf) - 1, global_capability)); - ast_cli(a->fd, FORMAT, "Parking Lot:", global_parkinglot); - ast_cli(a->fd, FORMAT, "Allow Guest:", AST_CLI_YESNO(global_allowguest)); - ast_cli(a->fd, "\n----\n"); - - return CLI_SUCCESS; -#undef FORMAT -} - -/*! \brief CLI command "gtalk reload" - * \todo XXX TODO make this work. */ -#if 0 -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; -} -#endif - -static int gtalk_parser(void *data, ikspak *pak) -{ - struct gtalk *client = ASTOBJ_REF((struct gtalk *) data); - int res; - iks *tmp; - - if (!strcasecmp(iks_name(pak->query), "jin:jingle") && (tmp = iks_next(pak->query)) && !strcasecmp(iks_name(tmp), "ses:session")) { - ast_debug(1, "New method detected. Skipping jingle offer and using old gtalk method.\n"); - pak->query = tmp; - } - - if (!strcmp(S_OR(iks_find_attrib(pak->x, "type"), ""), "error")) { - ast_log(LOG_NOTICE, "Remote peer reported an error, trying to establish the call anyway\n"); - } - - if (ast_strlen_zero(iks_find_attrib(pak->query, "type"))) { - ast_log(LOG_NOTICE, "No attribute \"type\" found. Ignoring message.\n"); - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "initiate")) { - /* New call */ - gtalk_newcall(client, pak); - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "candidates") || !strcmp(iks_find_attrib(pak->query, "type"), "transport-info")) { - ast_debug(3, "About to add candidate!\n"); - res = gtalk_add_candidate(client, pak); - if (!res) { - ast_log(LOG_WARNING, "Could not add any candidate\n"); - } else { - ast_debug(3, "Candidate Added!\n"); - } - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "accept")) { - gtalk_is_answered(client, pak); - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "transport-accept")) { - gtalk_is_accepted(client, pak); - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "content-info") || iks_find_with_attrib(pak->x, "gtalk", "action", "session-info")) { - gtalk_handle_dtmf(client, pak); - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "terminate")) { - gtalk_hangup_farend(client, pak); - } else if (!strcmp(iks_find_attrib(pak->query, "type"), "reject")) { - gtalk_hangup_farend(client, pak); - } - ASTOBJ_UNREF(client, gtalk_member_destroy); - return IKS_FILTER_EAT; -} - -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 (!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->cap, var->value, 0); - else if (!strcasecmp(var->name, "allow")) - ast_parse_allow_disallow(&member->prefs, member->cap, 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)); - 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, GOOGLE_NS, - 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; - 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)); - - /* set defaults */ - memset(&prefs, 0, sizeof(prefs)); - memset(&stunaddr, 0, sizeof(stunaddr)); - global_stunaddr = 0; - global_allowguest = DEFAULT_ALLOWGUEST; - ast_copy_string(global_context, DEFAULT_CONTEXT, sizeof(global_context)); - ast_copy_string(global_parkinglot, DEFAULT_PARKINGLOT, sizeof(global_parkinglot)); - - 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")) { - global_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(global_context, var->value, sizeof(global_context)); - } else if (!strcasecmp(var->name, "externip")) { - ast_copy_string(externip, var->value, sizeof(externip)); - } else if (!strcasecmp(var->name, "parkinglot")) { - ast_copy_string(global_parkinglot, var->value, sizeof(global_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)); - } - } else if (!strcasecmp(var->name, "stunaddr")) { - stunaddr.sin_port = htons(STANDARD_STUN_PORT); - global_stunaddr = 1; - if (ast_parse_arg(var->value, PARSE_INADDR, &stunaddr)) { - ast_log(LOG_WARNING, "Invalid STUN server address: %s\n", var->value); - } - } - } - while (cat) { - if (strcasecmp(cat, "general")) { - var = ast_variable_browse(cfg, cat); - member = ast_calloc(1, sizeof(*member)); - ASTOBJ_INIT(member); - ASTOBJ_WRLOCK(member); - member->cap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_NOLOCK); - 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, global_context, sizeof(member->context)); - ast_copy_string(member->parkinglot, global_parkinglot, sizeof(member->parkinglot)); - member->allowguest = global_allowguest; - member->prefs = prefs; - while (var) { - if (!strcasecmp(var->name, "disallow")) { - ast_parse_allow_disallow(&member->prefs, member->cap, - var->value, 0); - } else if (!strcasecmp(var->name, "allow")) { - ast_parse_allow_disallow(&member->prefs, member->cap, - 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)); - } - var = var->next; - } - ASTOBJ_UNLOCK(member); - clients = ast_aji_get_clients(); - if (clients) { - ASTOBJ_CONTAINER_TRAVERSE(clients, 1, { - ASTOBJ_WRLOCK(iterator); - ASTOBJ_WRLOCK(member); - if (member->connection) { - ASTOBJ_UNREF(member->connection, ast_aji_client_destroy); - } - member->connection = NULL; - iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, GOOGLE_NS, IKS_RULE_DONE); - iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, GOOGLE_JINGLE_NS, 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, global_allowguest, prefs, global_context, member)) { - ASTOBJ_CONTAINER_LINK(>alk_list, member); - } - ASTOBJ_UNREF(member, gtalk_member_destroy); - } - } - cat = ast_category_browse(cfg, cat); - } - - ast_config_destroy(cfg); - gtalk_update_externip(); - gtalk_free_candidates(global_candidates); - return 1; -} - -/*! - * \brief Load the module - * - * Module loading including tests for configuration or dependencies. - * This function can return AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_DECLINE, - * or AST_MODULE_LOAD_SUCCESS. If a dependency or environment variable fails - * tests return AST_MODULE_LOAD_FAILURE. If the module can not load the - * configuration file or other non-critical problem return - * AST_MODULE_LOAD_DECLINE. On success return AST_MODULE_LOAD_SUCCESS. - */ -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); - struct ast_format tmpfmt; - - if (!(gtalk_tech.capabilities = ast_format_cap_alloc(0))) { - return AST_MODULE_LOAD_DECLINE; - } - if (!(global_capability = ast_format_cap_alloc(0))) { - return AST_MODULE_LOAD_DECLINE; - } - - ast_format_cap_add_all_by_type(gtalk_tech.capabilities, AST_FORMAT_TYPE_AUDIO); - ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ULAW, 0)); - ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_GSM, 0)); - ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ALAW, 0)); - ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_H263, 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 = ast_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 (gtalk_get_local_ip(&ourip_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 - * \todo XXX TODO make this work. */ -#if 0 -static int reload(void) -{ - return 0; -} -#endif -/*! \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); - global_capability = ast_format_cap_destroy(global_capability); - gtalk_tech.capabilities = ast_format_cap_destroy(gtalk_tech.capabilities); - return 0; -} - -AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Gtalk Channel Driver", - .load = load_module, - .unload = unload_module, - /* .reload = reload, */ - .load_pri = AST_MODPRI_CHANNEL_DRIVER, - ); |