Fri Aug 17 00:17:28 2018

Asterisk developer's documentation


chan_gtalk.c File Reference

Gtalk Channel Driver, until google/libjingle works with jingle spec. More...

#include "asterisk.h"
#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"

Go to the source code of this file.

Data Structures

struct  gtalk
struct  gtalk_candidate
struct  gtalk_container
struct  gtalk_pvt

Defines

#define FORMAT   "%-30.30s %-30.30s %-15.15s %-5.5s %-5.5s \n"
#define GOOGLE_CONFIG   "gtalk.conf"

Enumerations

enum  gtalk_connect_type { AJI_CONNECT_STUN = 1, AJI_CONNECT_LOCAL = 2, AJI_CONNECT_RELAY = 3 }
enum  gtalk_protocol { AJI_PROTOCOL_UDP = 1, AJI_PROTOCOL_SSLTCP = 2 }

Functions

static int add_codec_to_answer (const struct gtalk_pvt *p, int codec, iks *dcodecs)
 AST_MODULE_INFO (ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER,"Gtalk Channel Driver",.load=load_module,.unload=unload_module,.load_pri=AST_MODPRI_CHANNEL_DRIVER,)
 AST_MUTEX_DEFINE_STATIC (gtalklock)
static struct gtalkfind_gtalk (char *name, char *connection)
static int gtalk_action (struct gtalk *client, struct gtalk_pvt *p, const char *action)
static int gtalk_add_candidate (struct gtalk *client, ikspak *pak)
static struct gtalk_pvtgtalk_alloc (struct gtalk *client, const char *us, const char *them, const char *sid)
static int gtalk_answer (struct ast_channel *ast)
static int gtalk_call (struct ast_channel *ast, char *dest, int timeout)
 Initiate new call, part of PBX interface dest is the dial string.
static int gtalk_create_candidates (struct gtalk *client, struct gtalk_pvt *p, char *sid, char *from, char *to)
static int gtalk_create_member (char *label, struct ast_variable *var, int allowguest, struct ast_codec_pref prefs, char *context, struct gtalk *member)
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_fixup (struct ast_channel *oldchan, struct ast_channel *newchan)
static void gtalk_free_candidates (struct gtalk_candidate *candidate)
static void gtalk_free_pvt (struct gtalk *client, struct gtalk_pvt *p)
static format_t gtalk_get_codec (struct ast_channel *chan)
static int gtalk_get_local_ip (struct ast_sockaddr *ourip)
static enum ast_rtp_glue_result gtalk_get_rtp_peer (struct ast_channel *chan, struct ast_rtp_instance **instance)
static int gtalk_handle_dtmf (struct gtalk *client, ikspak *pak)
static int gtalk_hangup (struct ast_channel *ast)
 Hangup a call through the gtalk proxy channel.
static int gtalk_hangup_farend (struct gtalk *client, ikspak *pak)
static int gtalk_indicate (struct ast_channel *ast, int condition, const void *data, size_t datalen)
static int gtalk_invite (struct gtalk_pvt *p, char *to, char *from, char *sid, int initiator)
static int gtalk_is_accepted (struct gtalk *client, ikspak *pak)
static int gtalk_is_answered (struct gtalk *client, ikspak *pak)
static int gtalk_load_config (void)
static void gtalk_member_destroy (struct gtalk *obj)
static struct ast_channelgtalk_new (struct gtalk *client, struct gtalk_pvt *i, int state, const char *title, const char *linkedid)
 Start new gtalk channel.
static int gtalk_newcall (struct gtalk *client, ikspak *pak)
static int gtalk_parser (void *data, ikspak *pak)
 CLI command "gtalk reload".
static struct ast_framegtalk_read (struct ast_channel *ast)
static struct ast_channelgtalk_request (const char *type, format_t format, const struct ast_channel *requestor, void *data, int *cause)
 Part of PBX interface.
static int gtalk_response (struct gtalk *client, char *from, ikspak *pak, const char *reasonstr, const char *reasonstr2)
static int gtalk_ringing_ack (void *data, ikspak *pak)
static struct ast_framegtalk_rtp_read (struct ast_channel *ast, struct gtalk_pvt *p)
static int gtalk_sendhtml (struct ast_channel *ast, int subclass, const char *data, int datalen)
static int gtalk_sendtext (struct ast_channel *ast, const char *text)
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)
static char * gtalk_show_channels (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 CLI command "gtalk show channels".
static int gtalk_update_externip (void)
static int gtalk_update_stun (struct gtalk *client, struct gtalk_pvt *p)
static int gtalk_write (struct ast_channel *ast, struct ast_frame *frame)
 Send frame to media channel (rtp).
static int load_module (void)
 Load module into PBX, register channel.
static int unload_module (void)
 Reload module.

Variables

static struct in_addr __ourip
static struct sockaddr_in bindaddr = { 0, }
static struct ast_jb_conf default_jbconf
static const char desc [] = "Gtalk Channel"
static char externip [16]
static format_t global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263
static struct ast_jb_conf global_jbconf
static struct ast_cli_entry gtalk_cli []
static struct gtalk_container gtalk_list
static struct ast_rtp_glue gtalk_rtp_glue
static struct ast_channel_tech gtalk_tech
 PBX interface structure for channel registration.
static struct io_contextio
static struct sched_contextsched
static struct sockaddr_in stunaddr

Detailed Description

Gtalk Channel Driver, until google/libjingle works with jingle spec.

Author:
Matt O'Gorman <mogorman@digium.com>
Philippe Sultan <philippe.sultan@gmail.com>

********** General TODO:s

Todo:

Support config reloading.

Fix native bridging.

Definition in file chan_gtalk.c.


Define Documentation

#define FORMAT   "%-30.30s %-30.30s %-15.15s %-5.5s %-5.5s \n"
#define GOOGLE_CONFIG   "gtalk.conf"

Definition at line 80 of file chan_gtalk.c.

Referenced by gtalk_load_config(), and load_module().


Enumeration Type Documentation

Enumerator:
AJI_CONNECT_STUN 
AJI_CONNECT_LOCAL 
AJI_CONNECT_RELAY 

Definition at line 98 of file chan_gtalk.c.

00098                         {
00099    AJI_CONNECT_STUN = 1,
00100    AJI_CONNECT_LOCAL = 2,
00101    AJI_CONNECT_RELAY = 3,
00102 };

Enumerator:
AJI_PROTOCOL_UDP 
AJI_PROTOCOL_SSLTCP 

Definition at line 93 of file chan_gtalk.c.

00093                     {
00094    AJI_PROTOCOL_UDP = 1,
00095    AJI_PROTOCOL_SSLTCP = 2,
00096 };


Function Documentation

static int add_codec_to_answer ( const struct gtalk_pvt p,
int  codec,
iks *  dcodecs 
) [static]

Definition at line 278 of file chan_gtalk.c.

References ast_getformatname(), ast_log(), format, and LOG_WARNING.

Referenced by gtalk_invite().

00279 {
00280    int res = 0;
00281    char *format = ast_getformatname(codec);
00282 
00283    if (!strcasecmp("ulaw", format)) {
00284       iks *payload_eg711u, *payload_pcmu;
00285       payload_pcmu = iks_new("payload-type");
00286       payload_eg711u = iks_new("payload-type");
00287 
00288       if(!payload_eg711u || !payload_pcmu) {
00289          iks_delete(payload_pcmu);
00290          iks_delete(payload_eg711u);
00291          ast_log(LOG_WARNING,"Failed to allocate iks node\n");
00292          return -1;
00293       }
00294       iks_insert_attrib(payload_pcmu, "id", "0");
00295       iks_insert_attrib(payload_pcmu, "name", "PCMU");
00296       iks_insert_attrib(payload_pcmu, "clockrate","8000");
00297       iks_insert_attrib(payload_pcmu, "bitrate","64000");
00298       iks_insert_attrib(payload_eg711u, "id", "100");
00299       iks_insert_attrib(payload_eg711u, "name", "EG711U");
00300       iks_insert_attrib(payload_eg711u, "clockrate","8000");
00301       iks_insert_attrib(payload_eg711u, "bitrate","64000");
00302       iks_insert_node(dcodecs, payload_pcmu);
00303       iks_insert_node(dcodecs, payload_eg711u);
00304       res ++;
00305    }
00306    if (!strcasecmp("alaw", format)) {
00307       iks *payload_eg711a, *payload_pcma;
00308       payload_pcma = iks_new("payload-type");
00309       payload_eg711a = iks_new("payload-type");
00310       if(!payload_eg711a || !payload_pcma) {
00311          iks_delete(payload_eg711a);
00312          iks_delete(payload_pcma);
00313          ast_log(LOG_WARNING,"Failed to allocate iks node\n");
00314          return -1;
00315       }
00316       iks_insert_attrib(payload_pcma, "id", "8");
00317       iks_insert_attrib(payload_pcma, "name", "PCMA");
00318       iks_insert_attrib(payload_pcma, "clockrate","8000");
00319       iks_insert_attrib(payload_pcma, "bitrate","64000");
00320       payload_eg711a = iks_new("payload-type");
00321       iks_insert_attrib(payload_eg711a, "id", "101");
00322       iks_insert_attrib(payload_eg711a, "name", "EG711A");
00323       iks_insert_attrib(payload_eg711a, "clockrate","8000");
00324       iks_insert_attrib(payload_eg711a, "bitrate","64000");
00325       iks_insert_node(dcodecs, payload_pcma);
00326       iks_insert_node(dcodecs, payload_eg711a);
00327       res ++;
00328    }
00329    if (!strcasecmp("ilbc", format)) {
00330       iks *payload_ilbc = iks_new("payload-type");
00331       if(!payload_ilbc) {
00332          ast_log(LOG_WARNING,"Failed to allocate iks node\n");
00333          return -1;
00334       }
00335       iks_insert_attrib(payload_ilbc, "id", "97");
00336       iks_insert_attrib(payload_ilbc, "name", "iLBC");
00337       iks_insert_attrib(payload_ilbc, "clockrate","8000");
00338       iks_insert_attrib(payload_ilbc, "bitrate","13300");
00339       iks_insert_node(dcodecs, payload_ilbc);
00340       res ++;
00341    }
00342    if (!strcasecmp("g723", format)) {
00343       iks *payload_g723 = iks_new("payload-type");
00344       if(!payload_g723) {
00345          ast_log(LOG_WARNING,"Failed to allocate iks node\n");
00346          return -1;
00347       }
00348       iks_insert_attrib(payload_g723, "id", "4");
00349       iks_insert_attrib(payload_g723, "name", "G723");
00350       iks_insert_attrib(payload_g723, "clockrate","8000");
00351       iks_insert_attrib(payload_g723, "bitrate","6300");
00352       iks_insert_node(dcodecs, payload_g723);
00353       res ++;
00354    }
00355    if (!strcasecmp("speex", format)) {
00356       iks *payload_speex = iks_new("payload-type");
00357       if(!payload_speex) {
00358          ast_log(LOG_WARNING,"Failed to allocate iks node\n");
00359          return -1;
00360       }
00361       iks_insert_attrib(payload_speex, "id", "110");
00362       iks_insert_attrib(payload_speex, "name", "speex");
00363       iks_insert_attrib(payload_speex, "clockrate","8000");
00364       iks_insert_attrib(payload_speex, "bitrate","11000");
00365       iks_insert_node(dcodecs, payload_speex);
00366       res++;
00367    }
00368    if (!strcasecmp("gsm", format)) {
00369       iks *payload_gsm = iks_new("payload-type");
00370       if(!payload_gsm) {
00371          ast_log(LOG_WARNING,"Failed to allocate iks node\n");
00372          return -1;
00373       }
00374       iks_insert_attrib(payload_gsm, "id", "103");
00375       iks_insert_attrib(payload_gsm, "name", "gsm");
00376       iks_insert_node(dcodecs, payload_gsm);
00377       res++;
00378    }
00379 
00380    return res;
00381 }

AST_MODULE_INFO ( ASTERISK_GPL_KEY  ,
AST_MODFLAG_LOAD_ORDER  ,
"Gtalk Channel Driver"  ,
load = load_module,
unload = unload_module,
load_pri = AST_MODPRI_CHANNEL_DRIVER 
)
AST_MUTEX_DEFINE_STATIC ( gtalklock   ) 

Protect the interface list (of gtalk_pvt's)

static struct gtalk* find_gtalk ( char *  name,
char *  connection 
) [static, read]

Definition at line 246 of file chan_gtalk.c.

References ast_strdupa, ast_verbose, ASTOBJ_CONTAINER_FIND, ASTOBJ_CONTAINER_FIND_FULL, ASTOBJ_CONTAINER_TRAVERSE, ASTOBJ_RDLOCK, ASTOBJ_UNLOCK, and gtalk_list.

Referenced by gtalk_request().

00247 {
00248    struct gtalk *gtalk = NULL;
00249    char *domain = NULL , *s = NULL;
00250 
00251    if (strchr(connection, '@')) {
00252       s = ast_strdupa(connection);
00253       domain = strsep(&s, "@");
00254       ast_verbose("OOOOH domain = %s\n", domain);
00255    }
00256    gtalk = ASTOBJ_CONTAINER_FIND(&gtalk_list, name);
00257    if (!gtalk && strchr(name, '@'))
00258       gtalk = ASTOBJ_CONTAINER_FIND_FULL(&gtalk_list, name, user,,, strcasecmp);
00259 
00260    if (!gtalk) {
00261       /* guest call */
00262       ASTOBJ_CONTAINER_TRAVERSE(&gtalk_list, 1, {
00263          ASTOBJ_RDLOCK(iterator);
00264          if (!strcasecmp(iterator->name, "guest")) {
00265             gtalk = iterator;
00266          }
00267          ASTOBJ_UNLOCK(iterator);
00268 
00269          if (gtalk)
00270             break;
00271       });
00272 
00273    }
00274    return gtalk;
00275 }

static int gtalk_action ( struct gtalk client,
struct gtalk_pvt p,
const char *  action 
) [static]

Definition at line 1173 of file chan_gtalk.c.

References ast_aji_increment_mid(), ast_aji_send(), ast_strdupa, gtalk::connection, GOOGLE_NS, gtalk_pvt::initiator, aji_client::mid, gtalk_pvt::sid, gtalk_pvt::them, and gtalk_pvt::us.

Referenced by gtalk_hangup(), and gtalk_newcall().

01174 {
01175    iks *request, *session = NULL;
01176    int res = -1;
01177    char *lowerthem = NULL;
01178 
01179    request = iks_new("iq");
01180    if (request) {
01181       iks_insert_attrib(request, "type", "set");
01182       iks_insert_attrib(request, "from", p->us);
01183       iks_insert_attrib(request, "to", p->them);
01184       iks_insert_attrib(request, "id", client->connection->mid);
01185       ast_aji_increment_mid(client->connection->mid);
01186       session = iks_new("session");
01187       if (session) {
01188          iks_insert_attrib(session, "type", action);
01189          iks_insert_attrib(session, "id", p->sid);
01190          /* put the initiator attribute to lower case if we receive the call
01191           * otherwise GoogleTalk won't establish the session */
01192          if (!p->initiator) {
01193                  char c;
01194             char *t = lowerthem = ast_strdupa(p->them);
01195             while (((c = *t) != '/') && (*t++ = tolower(c)));
01196          }
01197          iks_insert_attrib(session, "initiator", p->initiator ? p->us : lowerthem);
01198          iks_insert_attrib(session, "xmlns", GOOGLE_NS);
01199          iks_insert_node(request, session);
01200          ast_aji_send(client->connection, request);
01201          res = 0;
01202       }
01203    }
01204 
01205    iks_delete(session);
01206    iks_delete(request);
01207 
01208    return res;
01209 }

static int gtalk_add_candidate ( struct gtalk client,
ikspak *  pak 
) [static]

Definition at line 1478 of file chan_gtalk.c.

References AJI_CONNECT_LOCAL, AJI_CONNECT_RELAY, AJI_CONNECT_STUN, AJI_PROTOCOL_SSLTCP, AJI_PROTOCOL_UDP, ast_aji_send(), ast_calloc, ast_copy_string(), gtalk::connection, gtalk_candidate::generation, gtalk_update_stun(), gtalk_candidate::ip, aji_client::jid, gtalk_pvt::laststun, gtalk_candidate::name, gtalk_candidate::network, gtalk_candidate::next, gtalk_pvt::next, gtalk::p, gtalk_pvt::parent, gtalk_candidate::password, gtalk_candidate::port, gtalk_candidate::preference, gtalk_candidate::protocol, gtalk_candidate::receipt, S_OR, gtalk_pvt::theircandidates, gtalk_candidate::type, and gtalk_candidate::username.

Referenced by gtalk_parser().

01479 {
01480    struct gtalk_pvt *p = NULL, *tmp = NULL;
01481    struct aji_client *c = client->connection;
01482    struct gtalk_candidate *newcandidate = NULL;
01483    iks *traversenodes = NULL, *receipt = NULL;
01484    char *from;
01485 
01486    from = iks_find_attrib(pak->x,"to");
01487    if (!from) {
01488       from = c->jid->full;
01489    }
01490 
01491    for (tmp = client->p; tmp; tmp = tmp->next) {
01492       if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid) ||
01493          (iks_find_attrib(pak->query, "id") && !strcmp(iks_find_attrib(pak->query, "id"), tmp->sid))) {
01494          p = tmp;
01495          break;
01496       }
01497    }
01498 
01499    if (!p) {
01500       return -1;
01501    }
01502    traversenodes = pak->query;
01503    while(traversenodes) {
01504       if(!strcasecmp(S_OR(iks_name(traversenodes), ""), "session")) {
01505          traversenodes = iks_first_tag(traversenodes);
01506          continue;
01507       }
01508       if(!strcasecmp(S_OR(iks_name(traversenodes), ""), "ses:session")) {
01509          traversenodes = iks_child(traversenodes);
01510          continue;
01511       }
01512       if(!strcasecmp(S_OR(iks_name(traversenodes), ""), "candidate") || !strcasecmp(S_OR(iks_name(traversenodes), ""), "ses:candidate")) {
01513          newcandidate = ast_calloc(1, sizeof(*newcandidate));
01514          if (!newcandidate)
01515             return 0;
01516          ast_copy_string(newcandidate->name,
01517             S_OR(iks_find_attrib(traversenodes, "name"), ""),
01518             sizeof(newcandidate->name));
01519          ast_copy_string(newcandidate->ip,
01520             S_OR(iks_find_attrib(traversenodes, "address"), ""),
01521             sizeof(newcandidate->ip));
01522          newcandidate->port = atoi(iks_find_attrib(traversenodes, "port"));
01523          ast_copy_string(newcandidate->username,
01524             S_OR(iks_find_attrib(traversenodes, "username"), ""),
01525             sizeof(newcandidate->username));
01526          ast_copy_string(newcandidate->password,
01527             S_OR(iks_find_attrib(traversenodes, "password"), ""),
01528             sizeof(newcandidate->password));
01529          newcandidate->preference = atof(iks_find_attrib(traversenodes, "preference"));
01530          if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "protocol"), ""), "udp"))
01531             newcandidate->protocol = AJI_PROTOCOL_UDP;
01532          if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "protocol"), ""), "ssltcp"))
01533             newcandidate->protocol = AJI_PROTOCOL_SSLTCP;
01534 
01535          if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "type"), ""), "stun"))
01536             newcandidate->type = AJI_CONNECT_STUN;
01537          if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "type"), ""), "local"))
01538             newcandidate->type = AJI_CONNECT_LOCAL;
01539          if (!strcasecmp(S_OR(iks_find_attrib(traversenodes, "type"), ""), "relay"))
01540             newcandidate->type = AJI_CONNECT_RELAY;
01541          ast_copy_string(newcandidate->network,
01542             S_OR(iks_find_attrib(traversenodes, "network"), ""),
01543             sizeof(newcandidate->network));
01544          newcandidate->generation = atoi(S_OR(iks_find_attrib(traversenodes, "generation"), "0"));
01545          newcandidate->next = NULL;
01546 
01547          newcandidate->next = p->theircandidates;
01548          p->theircandidates = newcandidate;
01549          p->laststun = 0;
01550          gtalk_update_stun(p->parent, p);
01551          newcandidate = NULL;
01552       }
01553       traversenodes = iks_next_tag(traversenodes);
01554    }
01555 
01556    receipt = iks_new("iq");
01557    iks_insert_attrib(receipt, "type", "result");
01558    iks_insert_attrib(receipt, "from", from);
01559    iks_insert_attrib(receipt, "to", S_OR(iks_find_attrib(pak->x, "from"), ""));
01560    iks_insert_attrib(receipt, "id", S_OR(iks_find_attrib(pak->x, "id"), ""));
01561    ast_aji_send(c, receipt);
01562 
01563    iks_delete(receipt);
01564 
01565    return 1;
01566 }

static struct gtalk_pvt * gtalk_alloc ( struct gtalk client,
const char *  us,
const char *  them,
const char *  sid 
) [static, read]

Definition at line 977 of file chan_gtalk.c.

References ast_aji_buddy_destroy(), ast_calloc, ast_copy_string(), ast_debug, ast_free, ast_log(), ast_mutex_init, ast_mutex_lock, ast_mutex_unlock, ast_random(), ast_rtp_codecs_payloads_clear(), AST_RTP_DTMF_MODE_RFC2833, ast_rtp_instance_dtmf_mode_set(), ast_rtp_instance_get_codecs(), ast_rtp_instance_new(), ast_rtp_instance_set_prop(), AST_RTP_PROPERTY_DTMF, AST_RTP_PROPERTY_RTCP, AST_RTP_PROPERTY_STUN, ast_sockaddr_from_sin, ast_strdupa, ASTOBJ_CONTAINER_FIND, ASTOBJ_UNREF, aji_client::buddies, gtalk::buddy, aji_resource::cap, gtalk_pvt::capability, gtalk::capability, gtalk_pvt::cid_name, gtalk::connection, gtalk_pvt::exten, exten, gtalk_pvt::initiator, aji_version::jingle, gtalk_pvt::lock, LOG_ERROR, LOG_WARNING, gtalk_pvt::next, aji_resource::next, gtalk::p, gtalk_pvt::parent, gtalk::prefs, gtalk_pvt::prefs, aji_resource::resource, aji_buddy::resources, gtalk_pvt::rtp, gtalk_pvt::sid, gtalk_pvt::them, and gtalk_pvt::us.

Referenced by gtalk_newcall(), and gtalk_request().

00978 {
00979    struct gtalk_pvt *tmp = NULL;
00980    struct aji_resource *resources = NULL;
00981    struct aji_buddy *buddy = NULL;
00982    char idroster[200] = "";
00983    char *data, *exten = NULL;
00984    struct ast_sockaddr bindaddr_tmp;
00985 
00986    ast_debug(1, "The client is %s for alloc\n", client->name);
00987    if (!sid && !strchr(them, '/')) {   /* I started call! */
00988       if (!strcasecmp(client->name, "guest")) {
00989          buddy = ASTOBJ_CONTAINER_FIND(&client->connection->buddies, them);
00990          if (buddy) {
00991             resources = buddy->resources;
00992          }
00993       } else if (client->buddy) {
00994          resources = client->buddy->resources;
00995       }
00996 
00997       while (resources) {
00998          if (resources->cap->jingle) {
00999             break;
01000          }
01001          resources = resources->next;
01002       }
01003       if (resources) {
01004          snprintf(idroster, sizeof(idroster), "%s/%s", them, resources->resource);
01005       } else if ((*them == '+') || (strstr(them, "@voice.google.com"))) {
01006          snprintf(idroster, sizeof(idroster), "%s", them);
01007       } else {
01008          ast_log(LOG_ERROR, "no gtalk capable clients to talk to.\n");
01009          if (buddy) {
01010             ASTOBJ_UNREF(buddy, ast_aji_buddy_destroy);
01011          }
01012          return NULL;
01013       }
01014       if (buddy) {
01015          ASTOBJ_UNREF(buddy, ast_aji_buddy_destroy);
01016       }
01017    }
01018    if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
01019       return NULL;
01020    }
01021 
01022    memcpy(&tmp->prefs, &client->prefs, sizeof(struct ast_codec_pref));
01023 
01024    if (sid) {
01025       ast_copy_string(tmp->sid, sid, sizeof(tmp->sid));
01026       ast_copy_string(tmp->them, them, sizeof(tmp->them));
01027       ast_copy_string(tmp->us, us, sizeof(tmp->us));
01028    } else {
01029       snprintf(tmp->sid, sizeof(tmp->sid), "%08lx%08lx", (long unsigned)ast_random(), (long unsigned)ast_random());
01030       ast_copy_string(tmp->them, idroster, sizeof(tmp->them));
01031       ast_copy_string(tmp->us, us, sizeof(tmp->us));
01032       tmp->initiator = 1;
01033    }
01034    /* clear codecs */
01035    bindaddr.sin_family = AF_INET;
01036    ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
01037    if (!(tmp->rtp = ast_rtp_instance_new("asterisk", sched, &bindaddr_tmp, NULL))) {
01038      ast_log(LOG_ERROR, "Failed to create a new RTP instance (possibly an invalid bindaddr?)\n");
01039      ast_free(tmp);
01040      return NULL;
01041    }
01042    ast_rtp_instance_set_prop(tmp->rtp, AST_RTP_PROPERTY_RTCP, 1);
01043    ast_rtp_instance_set_prop(tmp->rtp, AST_RTP_PROPERTY_STUN, 1);
01044    ast_rtp_instance_set_prop(tmp->rtp, AST_RTP_PROPERTY_DTMF, 1);
01045    ast_rtp_instance_dtmf_mode_set(tmp->rtp, AST_RTP_DTMF_MODE_RFC2833);
01046    ast_rtp_codecs_payloads_clear(ast_rtp_instance_get_codecs(tmp->rtp), tmp->rtp);
01047 
01048    /* add user configured codec capabilites */
01049    if (client->capability) {
01050       tmp->capability = client->capability;
01051    } else if (global_capability) {
01052       tmp->capability = global_capability;
01053    }
01054 
01055    tmp->parent = client;
01056    if (!tmp->rtp) {
01057       ast_log(LOG_WARNING, "Out of RTP sessions?\n");
01058       ast_free(tmp);
01059       return NULL;
01060    }
01061 
01062    /* Set CALLERID(name) to the full JID of the remote peer */
01063    ast_copy_string(tmp->cid_name, tmp->them, sizeof(tmp->cid_name));
01064 
01065    if(strchr(tmp->us, '/')) {
01066       data = ast_strdupa(tmp->us);
01067       exten = strsep(&data, "/");
01068    } else {
01069       exten = tmp->us;
01070    }
01071    ast_copy_string(tmp->exten,  exten, sizeof(tmp->exten));
01072    ast_mutex_init(&tmp->lock);
01073    ast_mutex_lock(&gtalklock);
01074    tmp->next = client->p;
01075    client->p = tmp;
01076    ast_mutex_unlock(&gtalklock);
01077    return tmp;
01078 }

static int gtalk_answer ( struct ast_channel ast  )  [static]

Definition at line 508 of file chan_gtalk.c.

References ast_debug, ast_mutex_lock, ast_mutex_unlock, EVENT_FLAG_SYSTEM, gtalk_invite(), gtalk_pvt::lock, manager_event, gtalk_pvt::sid, ast_channel::tech_pvt, gtalk_pvt::them, and gtalk_pvt::us.

00509 {
00510    struct gtalk_pvt *p = ast->tech_pvt;
00511    int res = 0;
00512 
00513    ast_debug(1, "Answer!\n");
00514    ast_mutex_lock(&p->lock);
00515    gtalk_invite(p, p->them, p->us,p->sid, 0);
00516    manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate", "Channel: %s\r\nChanneltype: %s\r\nGtalk-SID: %s\r\n",
00517       ast->name, "GTALK", p->sid);
00518    ast_mutex_unlock(&p->lock);
00519    return res;
00520 }

static int gtalk_call ( struct ast_channel ast,
char *  dest,
int  timeout 
) [static]

Initiate new call, part of PBX interface dest is the dial string.

Definition at line 1808 of file chan_gtalk.c.

References ast_channel::_state, ast_copy_string(), ast_log(), ast_setstate(), AST_STATE_DOWN, AST_STATE_RESERVED, AST_STATE_RING, gtalk::connection, aji_client::f, gtalk_invite(), gtalk_ringing_ack(), LOG_WARNING, aji_client::mid, gtalk_pvt::parent, gtalk_pvt::ring, gtalk_pvt::ringrule, gtalk_pvt::sid, ast_channel::tech_pvt, gtalk_pvt::them, and gtalk_pvt::us.

01809 {
01810    struct gtalk_pvt *p = ast->tech_pvt;
01811 
01812    if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
01813       ast_log(LOG_WARNING, "gtalk_call called on %s, neither down nor reserved\n", ast->name);
01814       return -1;
01815    }
01816 
01817    ast_setstate(ast, AST_STATE_RING);
01818    if (!p->ringrule) {
01819       ast_copy_string(p->ring, p->parent->connection->mid, sizeof(p->ring));
01820       p->ringrule = iks_filter_add_rule(p->parent->connection->f, gtalk_ringing_ack, p,
01821                      IKS_RULE_ID, p->ring, IKS_RULE_DONE);
01822    } else {
01823       ast_log(LOG_WARNING, "Whoa, already have a ring rule!\n");
01824    }
01825 
01826    gtalk_invite(p, p->them, p->us, p->sid, 1);
01827 
01828    return 0;
01829 }

static int gtalk_create_candidates ( struct gtalk client,
struct gtalk_pvt p,
char *  sid,
char *  from,
char *  to 
) [static]

Definition at line 840 of file chan_gtalk.c.

References AJI_CONNECT_LOCAL, AJI_CONNECT_RELAY, AJI_CONNECT_STUN, AJI_PROTOCOL_SSLTCP, AJI_PROTOCOL_UDP, ast_aji_increment_mid(), ast_aji_send(), ast_calloc, ast_copy_string(), ast_free, ast_log(), ast_random(), ast_rtp_instance_get_local_address(), ast_sockaddr_stringify_addr(), ast_sockaddr_to_sin, ast_strdupa, ast_strlen_zero(), gtalk::connection, gtalk_candidate::generation, GOOGLE_NS, GOOGLE_TRANSPORT_NS, gtalk_get_local_ip(), gtalk_update_externip(), gtalk_pvt::initiator, gtalk_candidate::ip, gtalk_pvt::laststun, LOG_ERROR, LOG_NOTICE, LOG_WARNING, aji_client::mid, gtalk_candidate::name, gtalk_candidate::next, gtalk_pvt::next, gtalk_pvt::ourcandidates, pass, gtalk_candidate::password, gtalk_candidate::port, gtalk_candidate::preference, gtalk_candidate::protocol, gtalk_pvt::rtp, gtalk_pvt::sid, gtalk_candidate::type, and gtalk_candidate::username.

Referenced by gtalk_newcall(), and gtalk_ringing_ack().

00841 {
00842    struct gtalk_candidate *tmp;
00843    struct aji_client *c = client->connection;
00844    struct gtalk_candidate *ours1 = NULL, *ours2 = NULL;
00845    struct sockaddr_in sin = { 0, };
00846    struct ast_sockaddr sin_tmp;
00847    struct ast_sockaddr us;
00848    iks *iq, *gtalk, *candidate, *transport;
00849    char user[17], pass[17], preference[5], port[7];
00850    char *lowerfrom = NULL;
00851 
00852    iq = iks_new("iq");
00853    gtalk = iks_new("session");
00854    candidate = iks_new("candidate");
00855    transport = iks_new("transport");
00856    if (!iq || !gtalk || !candidate || !transport) {
00857       ast_log(LOG_ERROR, "Memory allocation error\n");
00858       goto safeout;
00859    }
00860    ours1 = ast_calloc(1, sizeof(*ours1));
00861    ours2 = ast_calloc(1, sizeof(*ours2));
00862    if (!ours1 || !ours2)
00863       goto safeout;
00864 
00865    iks_insert_attrib(transport, "xmlns",GOOGLE_TRANSPORT_NS);
00866    iks_insert_node(iq, gtalk);
00867    iks_insert_node(gtalk,candidate);
00868    iks_insert_node(gtalk,transport);
00869 
00870    for (; p; p = p->next) {
00871       if (!strcasecmp(p->sid, sid))
00872          break;
00873    }
00874 
00875    if (!p) {
00876       ast_log(LOG_NOTICE, "No matching gtalk session - SID %s!\n", sid);
00877       goto safeout;
00878    }
00879 
00880    ast_rtp_instance_get_local_address(p->rtp, &sin_tmp);
00881    ast_sockaddr_to_sin(&sin_tmp, &sin);
00882 
00883    gtalk_get_local_ip(&us);
00884 
00885    if (!strcmp(ast_sockaddr_stringify_addr(&us), "127.0.0.1")) {
00886       ast_log(LOG_WARNING, "Found a loopback IP on the system, check your network configuration or set the bindaddr attribute.\n");
00887    }
00888 
00889    /* Setup our gtalk candidates */
00890    ast_copy_string(ours1->name, "rtp", sizeof(ours1->name));
00891    ours1->port = ntohs(sin.sin_port);
00892    ours1->preference = 1;
00893    snprintf(user, sizeof(user), "%08lx%08lx", (long unsigned)ast_random(), (long unsigned)ast_random());
00894    snprintf(pass, sizeof(pass), "%08lx%08lx", (long unsigned)ast_random(), (long unsigned)ast_random());
00895    ast_copy_string(ours1->username, user, sizeof(ours1->username));
00896    ast_copy_string(ours1->password, pass, sizeof(ours1->password));
00897    ast_copy_string(ours1->ip, ast_sockaddr_stringify_addr(&us),
00898          sizeof(ours1->ip));
00899    ours1->protocol = AJI_PROTOCOL_UDP;
00900    ours1->type = AJI_CONNECT_LOCAL;
00901    ours1->generation = 0;
00902    p->ourcandidates = ours1;
00903 
00904    /* XXX this is a blocking action.  We send a STUN request to the server
00905     * and wait for the response.  If blocking here is a problem the STUN requests/responses
00906     * for the externip may need to be done differently. */
00907    gtalk_update_externip();
00908    if (!ast_strlen_zero(externip)) {
00909       ast_copy_string(ours2->username, user, sizeof(ours2->username));
00910       ast_copy_string(ours2->password, pass, sizeof(ours2->password));
00911       ast_copy_string(ours2->ip, externip, sizeof(ours2->ip));
00912       ast_copy_string(ours2->name, "rtp", sizeof(ours1->name));
00913       ours2->port = ntohs(sin.sin_port);
00914       ours2->preference = 0.9;
00915       ours2->protocol = AJI_PROTOCOL_UDP;
00916       ours2->type = AJI_CONNECT_STUN;
00917       ours2->generation = 0;
00918       ours1->next = ours2;
00919       ours2 = NULL;
00920    }
00921    ours1 = NULL;
00922 
00923    for (tmp = p->ourcandidates; tmp; tmp = tmp->next) {
00924       snprintf(port, sizeof(port), "%d", tmp->port);
00925       snprintf(preference, sizeof(preference), "%.2f", tmp->preference);
00926       iks_insert_attrib(iq, "from", to);
00927       iks_insert_attrib(iq, "to", from);
00928       iks_insert_attrib(iq, "type", "set");
00929       iks_insert_attrib(iq, "id", c->mid);
00930       ast_aji_increment_mid(c->mid);
00931       iks_insert_attrib(gtalk, "type", "candidates");
00932       iks_insert_attrib(gtalk, "id", sid);
00933       /* put the initiator attribute to lower case if we receive the call
00934        * otherwise GoogleTalk won't establish the session */
00935       if (!p->initiator) {
00936               char c;
00937          char *t = lowerfrom = ast_strdupa(from);
00938          while (((c = *t) != '/') && (*t++ = tolower(c)));
00939       }
00940       iks_insert_attrib(gtalk, "initiator", (p->initiator) ? to : lowerfrom);
00941       iks_insert_attrib(gtalk, "xmlns", GOOGLE_NS);
00942       iks_insert_attrib(candidate, "name", tmp->name);
00943       iks_insert_attrib(candidate, "address", tmp->ip);
00944       iks_insert_attrib(candidate, "port", port);
00945       iks_insert_attrib(candidate, "username", tmp->username);
00946       iks_insert_attrib(candidate, "password", tmp->password);
00947       iks_insert_attrib(candidate, "preference", preference);
00948       if (tmp->protocol == AJI_PROTOCOL_UDP)
00949          iks_insert_attrib(candidate, "protocol", "udp");
00950       if (tmp->protocol == AJI_PROTOCOL_SSLTCP)
00951          iks_insert_attrib(candidate, "protocol", "ssltcp");
00952       if (tmp->type == AJI_CONNECT_STUN)
00953          iks_insert_attrib(candidate, "type", "stun");
00954       if (tmp->type == AJI_CONNECT_LOCAL)
00955          iks_insert_attrib(candidate, "type", "local");
00956       if (tmp->type == AJI_CONNECT_RELAY)
00957          iks_insert_attrib(candidate, "type", "relay");
00958       iks_insert_attrib(candidate, "network", "0");
00959       iks_insert_attrib(candidate, "generation", "0");
00960       ast_aji_send(c, iq);
00961    }
00962    p->laststun = 0;
00963 
00964 safeout:
00965    if (ours1)
00966       ast_free(ours1);
00967    if (ours2)
00968       ast_free(ours2);
00969    iks_delete(iq);
00970    iks_delete(gtalk);
00971    iks_delete(candidate);
00972    iks_delete(transport);
00973 
00974    return 1;
00975 }

static int gtalk_create_member ( char *  label,
struct ast_variable var,
int  allowguest,
struct ast_codec_pref  prefs,
char *  context,
struct gtalk member 
) [static]

Definition at line 2028 of file chan_gtalk.c.

References gtalk::allowguest, ast_aji_get_client(), ast_copy_string(), ast_log(), ast_parse_allow_disallow(), ASTOBJ_CONTAINER_FIND, aji_client::buddies, gtalk::buddy, gtalk::capability, gtalk::connection, gtalk::context, aji_client::f, GOOGLE_NS, gtalk_parser(), LOG_ERROR, LOG_WARNING, ast_variable::name, ast_variable::next, gtalk::parkinglot, gtalk::prefs, gtalk::user, and ast_variable::value.

Referenced by gtalk_load_config().

02031 {
02032    struct aji_client *client;
02033 
02034    if (!member)
02035       ast_log(LOG_WARNING, "Out of memory.\n");
02036 
02037    ast_copy_string(member->name, label, sizeof(member->name));
02038    ast_copy_string(member->user, label, sizeof(member->user));
02039    ast_copy_string(member->context, context, sizeof(member->context));
02040    member->allowguest = allowguest;
02041    member->prefs = prefs;
02042    while (var) {
02043       if (!strcasecmp(var->name, "username"))
02044          ast_copy_string(member->user, var->value, sizeof(member->user));
02045       else if (!strcasecmp(var->name, "disallow"))
02046          ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 0);
02047       else if (!strcasecmp(var->name, "allow"))
02048          ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 1);
02049       else if (!strcasecmp(var->name, "context"))
02050          ast_copy_string(member->context, var->value, sizeof(member->context));
02051       else if (!strcasecmp(var->name, "parkinglot"))
02052          ast_copy_string(member->parkinglot, var->value, sizeof(member->parkinglot));
02053       else if (!strcasecmp(var->name, "connection")) {
02054          if ((client = ast_aji_get_client(var->value))) {
02055             member->connection = client;
02056             iks_filter_add_rule(client->f, gtalk_parser, member,
02057                       IKS_RULE_TYPE, IKS_PAK_IQ,
02058                       IKS_RULE_FROM_PARTIAL, member->user,
02059                       IKS_RULE_NS, GOOGLE_NS,
02060                       IKS_RULE_DONE);
02061          } else {
02062             ast_log(LOG_ERROR, "connection referenced not found!\n");
02063             return 0;
02064          }
02065       }
02066       var = var->next;
02067    }
02068    if (member->connection && member->user)
02069       member->buddy = ASTOBJ_CONTAINER_FIND(&member->connection->buddies, member->user);
02070    else {
02071       ast_log(LOG_ERROR, "No Connection or Username!\n");
02072    }
02073    return 1;
02074 }

static int gtalk_digit_begin ( struct ast_channel ast,
char  digit 
) [static]

Definition at line 1708 of file chan_gtalk.c.

References ast_mutex_lock, ast_mutex_unlock, ast_rtp_instance_dtmf_begin(), gtalk_pvt::lock, gtalk_pvt::rtp, and ast_channel::tech_pvt.

01709 {
01710    struct gtalk_pvt *p = chan->tech_pvt;
01711    int res = 0;
01712 
01713    ast_mutex_lock(&p->lock);
01714    if (p->rtp) {
01715       ast_rtp_instance_dtmf_begin(p->rtp, digit);
01716    } else {
01717       res = -1;
01718    }
01719    ast_mutex_unlock(&p->lock);
01720 
01721    return res;
01722 }

static int gtalk_digit_end ( struct ast_channel ast,
char  digit,
unsigned int  duration 
) [static]

Definition at line 1724 of file chan_gtalk.c.

References ast_mutex_lock, ast_mutex_unlock, ast_rtp_instance_dtmf_end_with_duration(), gtalk_pvt::lock, gtalk_pvt::rtp, and ast_channel::tech_pvt.

01725 {
01726    struct gtalk_pvt *p = chan->tech_pvt;
01727    int res = 0;
01728 
01729    ast_mutex_lock(&p->lock);
01730    if (p->rtp) {
01731       ast_rtp_instance_dtmf_end_with_duration(p->rtp, digit, duration);
01732    } else {
01733       res = -1;
01734    }
01735    ast_mutex_unlock(&p->lock);
01736 
01737    return res;
01738 }

static int gtalk_fixup ( struct ast_channel oldchan,
struct ast_channel newchan 
) [static]

Definition at line 1655 of file chan_gtalk.c.

References ast_mutex_lock, ast_mutex_unlock, gtalk_pvt::lock, gtalk_pvt::owner, and ast_channel::tech_pvt.

01656 {
01657    struct gtalk_pvt *p = newchan->tech_pvt;
01658    ast_mutex_lock(&p->lock);
01659 
01660    if ((p->owner != oldchan)) {
01661       ast_mutex_unlock(&p->lock);
01662       return -1;
01663    }
01664    if (p->owner == oldchan)
01665       p->owner = newchan;
01666    ast_mutex_unlock(&p->lock);
01667    return 0;
01668 }

static void gtalk_free_candidates ( struct gtalk_candidate candidate  )  [static]

Definition at line 1211 of file chan_gtalk.c.

References ast_free, last, and gtalk_candidate::next.

Referenced by gtalk_free_pvt(), and gtalk_load_config().

01212 {
01213    struct gtalk_candidate *last;
01214    while (candidate) {
01215       last = candidate;
01216       candidate = candidate->next;
01217       ast_free(last);
01218    }
01219 }

static void gtalk_free_pvt ( struct gtalk client,
struct gtalk_pvt p 
) [static]

Definition at line 1221 of file chan_gtalk.c.

References ast_free, ast_log(), ast_rtp_instance_destroy(), gtalk::connection, aji_client::f, gtalk_free_candidates(), LOG_WARNING, gtalk_pvt::next, gtalk_pvt::owner, gtalk::p, gtalk_pvt::parent, gtalk_pvt::ringrule, gtalk_pvt::rtp, gtalk_pvt::theircandidates, and gtalk_pvt::vrtp.

Referenced by gtalk_hangup(), and gtalk_newcall().

01222 {
01223    struct gtalk_pvt *cur, *prev = NULL;
01224    cur = client->p;
01225    while (cur) {
01226       if (cur == p) {
01227          if (prev)
01228             prev->next = p->next;
01229          else
01230             client->p = p->next;
01231          break;
01232       }
01233       prev = cur;
01234       cur = cur->next;
01235    }
01236    if (p->ringrule)
01237       iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
01238    if (p->owner)
01239       ast_log(LOG_WARNING, "Uh oh, there's an owner, this is going to be messy.\n");
01240    if (p->rtp)
01241       ast_rtp_instance_destroy(p->rtp);
01242    if (p->vrtp)
01243       ast_rtp_instance_destroy(p->vrtp);
01244    gtalk_free_candidates(p->theircandidates);
01245    ast_free(p);
01246 }

static format_t gtalk_get_codec ( struct ast_channel chan  )  [static]

Definition at line 541 of file chan_gtalk.c.

References gtalk_pvt::peercapability, and ast_channel::tech_pvt.

00542 {
00543    struct gtalk_pvt *p = chan->tech_pvt;
00544    return p->peercapability;
00545 }

static int gtalk_get_local_ip ( struct ast_sockaddr ourip  )  [static]

Definition at line 812 of file chan_gtalk.c.

References ast_find_ourip(), ast_free, ast_ouraddrfor(), ast_sockaddr_copy(), ast_sockaddr_from_sin, ast_sockaddr_is_any(), ast_sockaddr_resolve(), and PARSE_PORT_FORBID.

Referenced by gtalk_create_candidates(), and load_module().

00813 {
00814    struct ast_sockaddr root;
00815    struct ast_sockaddr bindaddr_tmp;
00816    struct ast_sockaddr *addrs;
00817    int addrs_cnt;
00818 
00819    /* If bind address is not 0.0.0.0, then bindaddr is our local ip. */
00820    ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
00821    if (!ast_sockaddr_is_any(&bindaddr_tmp)) {
00822       ast_sockaddr_copy(ourip, &bindaddr_tmp);
00823       return 0;
00824    }
00825 
00826    /* If no bind address was provided, lets see what ip we would use to connect to google.com and use that.
00827     * If you can't resolve google.com from your network, then this module is useless for you anyway. */
00828    if ((addrs_cnt = ast_sockaddr_resolve(&addrs, "google.com", PARSE_PORT_FORBID, AF_INET)) > 0) {
00829       ast_sockaddr_copy(&root, &addrs[0]);
00830       ast_free(addrs);
00831       if (!ast_ouraddrfor(&root, ourip)) {
00832          return 0;
00833       }
00834    }
00835 
00836    /* As a last resort, use this function to find our local address. */
00837    return ast_find_ourip(ourip, &bindaddr_tmp, AF_INET);
00838 }

static enum ast_rtp_glue_result gtalk_get_rtp_peer ( struct ast_channel chan,
struct ast_rtp_instance **  instance 
) [static]

Definition at line 522 of file chan_gtalk.c.

References ao2_ref, ast_mutex_lock, ast_mutex_unlock, AST_RTP_GLUE_RESULT_FORBID, AST_RTP_GLUE_RESULT_LOCAL, gtalk_pvt::lock, gtalk_pvt::rtp, and ast_channel::tech_pvt.

00523 {
00524    struct gtalk_pvt *p = chan->tech_pvt;
00525    enum ast_rtp_glue_result res = AST_RTP_GLUE_RESULT_FORBID;
00526 
00527    if (!p)
00528       return res;
00529 
00530    ast_mutex_lock(&p->lock);
00531    if (p->rtp){
00532       ao2_ref(p->rtp, +1);
00533       *instance = p->rtp;
00534       res = AST_RTP_GLUE_RESULT_LOCAL;
00535    }
00536    ast_mutex_unlock(&p->lock);
00537 
00538    return res;
00539 }

static int gtalk_handle_dtmf ( struct gtalk client,
ikspak *  pak 
) [static]

Definition at line 713 of file chan_gtalk.c.

References AST_FRAME_DTMF, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, ast_log(), ast_queue_frame(), ast_verbose, gtalk::connection, gtalk_response(), ast_frame_subclass::integer, aji_client::jid, LOG_NOTICE, gtalk_pvt::next, gtalk_pvt::owner, gtalk::p, gtalk_pvt::sid, and ast_frame::subclass.

Referenced by gtalk_parser().

00714 {
00715    struct gtalk_pvt *tmp;
00716    iks *dtmfnode = NULL, *dtmfchild = NULL;
00717    char *dtmf;
00718    char *from;
00719    /* Make sure our new call doesn't exist yet */
00720    for (tmp = client->p; tmp; tmp = tmp->next) {
00721       if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid) || iks_find_with_attrib(pak->x, "gtalk", "sid", tmp->sid))
00722          break;
00723    }
00724    from = iks_find_attrib(pak->x, "to");
00725    if (!from) {
00726       from = client->connection->jid->full;
00727    }
00728 
00729    if (tmp) {
00730       if(iks_find_with_attrib(pak->x, "dtmf-method", "method", "rtp")) {
00731          gtalk_response(client, from, pak,
00732                "feature-not-implemented xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'",
00733                "unsupported-dtmf-method xmlns='http://jabber.org/protocol/gtalk/info/dtmf#errors'");
00734          return -1;
00735       }
00736       if ((dtmfnode = iks_find(pak->x, "dtmf"))) {
00737          if((dtmf = iks_find_attrib(dtmfnode, "code"))) {
00738             if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-up")) {
00739                struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
00740                f.subclass.integer = dtmf[0];
00741                ast_queue_frame(tmp->owner, &f);
00742                ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer);
00743             } else if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-down")) {
00744                struct ast_frame f = {AST_FRAME_DTMF_END, };
00745                f.subclass.integer = dtmf[0];
00746                ast_queue_frame(tmp->owner, &f);
00747                ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer);
00748             } else if(iks_find_attrib(pak->x, "dtmf")) { /* 250 millasecond default */
00749                struct ast_frame f = {AST_FRAME_DTMF, };
00750                f.subclass.integer = dtmf[0];
00751                ast_queue_frame(tmp->owner, &f);
00752                ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer);
00753             }
00754          }
00755       } else if ((dtmfnode = iks_find_with_attrib(pak->x, "gtalk", "action", "session-info"))) {
00756          if((dtmfchild = iks_find(dtmfnode, "dtmf"))) {
00757             if((dtmf = iks_find_attrib(dtmfchild, "code"))) {
00758                if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-up")) {
00759                   struct ast_frame f = {AST_FRAME_DTMF_END, };
00760                   f.subclass.integer = dtmf[0];
00761                   ast_queue_frame(tmp->owner, &f);
00762                   ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer);
00763                } else if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-down")) {
00764                   struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
00765                   f.subclass.integer = dtmf[0];
00766                   ast_queue_frame(tmp->owner, &f);
00767                   ast_verbose("GOOGLE! DTMF-relay event received: %c\n", (int) f.subclass.integer);
00768                }
00769             }
00770          }
00771       }
00772       gtalk_response(client, from, pak, NULL, NULL);
00773       return 1;
00774    } else {
00775       ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
00776    }
00777 
00778    gtalk_response(client, from, pak, NULL, NULL);
00779    return 1;
00780 }

static int gtalk_hangup ( struct ast_channel ast  )  [static]

Hangup a call through the gtalk proxy channel.

Definition at line 1832 of file chan_gtalk.c.

References gtalk_pvt::alreadygone, ast_module_unref(), ast_mutex_lock, ast_mutex_unlock, gtalk_action(), gtalk_free_pvt(), gtalk_pvt::lock, gtalk_pvt::owner, gtalk_pvt::parent, and ast_channel::tech_pvt.

Referenced by gtalk_newcall().

01833 {
01834    struct gtalk_pvt *p = ast->tech_pvt;
01835    struct gtalk *client;
01836 
01837    ast_mutex_lock(&p->lock);
01838    client = p->parent;
01839    p->owner = NULL;
01840    ast->tech_pvt = NULL;
01841    if (!p->alreadygone) {
01842       gtalk_action(client, p, "terminate");
01843    }
01844    ast_mutex_unlock(&p->lock);
01845 
01846    gtalk_free_pvt(client, p);
01847    ast_module_unref(ast_module_info->self);
01848 
01849    return 0;
01850 }

static int gtalk_hangup_farend ( struct gtalk client,
ikspak *  pak 
) [static]

Definition at line 782 of file chan_gtalk.c.

References gtalk_pvt::alreadygone, ast_debug, ast_log(), ast_queue_hangup(), gtalk::connection, gtalk_response(), aji_client::jid, LOG_NOTICE, gtalk_pvt::next, gtalk_pvt::owner, gtalk::p, and gtalk_pvt::sid.

Referenced by gtalk_parser().

00783 {
00784    struct gtalk_pvt *tmp;
00785    char *from;
00786 
00787    ast_debug(1, "The client is %s\n", client->name);
00788    /* Make sure our new call doesn't exist yet */
00789    for (tmp = client->p; tmp; tmp = tmp->next) {
00790       if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid) ||
00791          (iks_find_attrib(pak->query, "id") && !strcmp(iks_find_attrib(pak->query, "id"), tmp->sid))) {
00792          break;
00793       }
00794    }
00795    from = iks_find_attrib(pak->x, "to");
00796    if (!from) {
00797       from = client->connection->jid->full;
00798    }
00799 
00800    if (tmp) {
00801       tmp->alreadygone = 1;
00802       if (tmp->owner) {
00803          ast_queue_hangup(tmp->owner);
00804       }
00805    } else {
00806       ast_log(LOG_NOTICE, "Whoa, didn't find call during hangup!\n");
00807    }
00808    gtalk_response(client, from, pak, NULL, NULL);
00809    return 1;
00810 }

static int gtalk_indicate ( struct ast_channel ast,
int  condition,
const void *  data,
size_t  datalen 
) [static]

Definition at line 1670 of file chan_gtalk.c.

References AST_CONTROL_HOLD, AST_CONTROL_UNHOLD, ast_debug, ast_moh_start(), and ast_moh_stop().

01671 {
01672    int res = 0;
01673 
01674    switch (condition) {
01675    case AST_CONTROL_HOLD:
01676       ast_moh_start(ast, data, NULL);
01677       break;
01678    case AST_CONTROL_UNHOLD:
01679       ast_moh_stop(ast);
01680       break;
01681    default:
01682       ast_debug(3, "Don't know how to indicate condition '%d'\n", condition);
01683       res = -1;
01684    }
01685 
01686    return res;
01687 }

static int gtalk_invite ( struct gtalk_pvt p,
char *  to,
char *  from,
char *  sid,
int  initiator 
) [static]

Definition at line 383 of file chan_gtalk.c.

References add_codec_to_answer(), ast_aji_increment_mid(), ast_aji_send(), ast_codec_pref_index(), ast_log(), ast_strdupa, gtalk::capability, gtalk::connection, GOOGLE_AUDIO_NS, GOOGLE_NS, GOOGLE_TRANSPORT_NS, LOG_ERROR, aji_client::mid, gtalk_pvt::parent, and gtalk::prefs.

Referenced by gtalk_answer(), gtalk_call(), and gtalk_ringing_ack().

00384 {
00385    struct gtalk *client = p->parent;
00386    iks *iq, *gtalk, *dcodecs, *payload_telephone, *transport;
00387    int x;
00388    int pref_codec = 0;
00389    int alreadysent = 0;
00390    int codecs_num = 0;
00391    char *lowerto = NULL;
00392 
00393    iq = iks_new("iq");
00394    gtalk = iks_new("session");
00395    dcodecs = iks_new("description");
00396    transport = iks_new("transport");
00397    payload_telephone = iks_new("payload-type");
00398    if (!(iq && gtalk && dcodecs && transport && payload_telephone)){
00399       iks_delete(iq);
00400       iks_delete(gtalk);
00401       iks_delete(dcodecs);
00402       iks_delete(transport);
00403       iks_delete(payload_telephone);
00404 
00405       ast_log(LOG_ERROR, "Could not allocate iksemel nodes\n");
00406       return 0;
00407    }
00408    iks_insert_attrib(dcodecs, "xmlns", GOOGLE_AUDIO_NS);
00409    iks_insert_attrib(dcodecs, "xml:lang", "en");
00410 
00411    for (x = 0; x < 64; x++) {
00412       if (!(pref_codec = ast_codec_pref_index(&client->prefs, x)))
00413          break;
00414       if (!(client->capability & pref_codec))
00415          continue;
00416       if (alreadysent & pref_codec)
00417          continue;
00418       codecs_num = add_codec_to_answer(p, pref_codec, dcodecs);
00419       alreadysent |= pref_codec;
00420    }
00421 
00422    if (codecs_num) {
00423       /* only propose DTMF within an audio session */
00424       iks_insert_attrib(payload_telephone, "id", "101");
00425       iks_insert_attrib(payload_telephone, "name", "telephone-event");
00426       iks_insert_attrib(payload_telephone, "clockrate", "8000");
00427    }
00428    iks_insert_attrib(transport,"xmlns",GOOGLE_TRANSPORT_NS);
00429 
00430    iks_insert_attrib(iq, "type", "set");
00431    iks_insert_attrib(iq, "to", to);
00432    iks_insert_attrib(iq, "from", from);
00433    iks_insert_attrib(iq, "id", client->connection->mid);
00434    ast_aji_increment_mid(client->connection->mid);
00435 
00436    iks_insert_attrib(gtalk, "xmlns", GOOGLE_NS);
00437    iks_insert_attrib(gtalk, "type",initiator ? "initiate": "accept");
00438    /* put the initiator attribute to lower case if we receive the call
00439     * otherwise GoogleTalk won't establish the session */
00440    if (!initiator) {
00441            char c;
00442            char *t = lowerto = ast_strdupa(to);
00443       while (((c = *t) != '/') && (*t++ = tolower(c)));
00444    }
00445    iks_insert_attrib(gtalk, "initiator", initiator ? from : lowerto);
00446    iks_insert_attrib(gtalk, "id", sid);
00447    iks_insert_node(iq, gtalk);
00448    iks_insert_node(gtalk, dcodecs);
00449    iks_insert_node(dcodecs, payload_telephone);
00450 
00451    ast_aji_send(client->connection, iq);
00452 
00453    iks_delete(payload_telephone);
00454    iks_delete(transport);
00455    iks_delete(dcodecs);
00456    iks_delete(gtalk);
00457    iks_delete(iq);
00458    return 1;
00459 }

static int gtalk_is_accepted ( struct gtalk client,
ikspak *  pak 
) [static]

Definition at line 684 of file chan_gtalk.c.

References ast_log(), gtalk::connection, gtalk_response(), gtalk_update_stun(), aji_client::jid, LOG_DEBUG, LOG_NOTICE, gtalk_pvt::next, gtalk::p, gtalk_pvt::parent, and gtalk_pvt::sid.

Referenced by gtalk_parser().

00685 {
00686    struct gtalk_pvt *tmp;
00687    char *from;
00688 
00689    ast_log(LOG_DEBUG, "The client is %s\n", client->name);
00690    /* find corresponding call */
00691    for (tmp = client->p; tmp; tmp = tmp->next) {
00692       if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) {
00693          break;
00694       }
00695    }
00696 
00697    from = iks_find_attrib(pak->x, "to");
00698    if (!from) {
00699       from = client->connection->jid->full;
00700    }
00701 
00702    if (tmp) {
00703       gtalk_update_stun(tmp->parent, tmp);
00704    } else {
00705       ast_log(LOG_NOTICE, "Whoa, didn't find call during accept?!\n");
00706    }
00707 
00708    /* answer 'iq' packet to let the remote peer know that we're alive */
00709    gtalk_response(client, from, pak, NULL, NULL);
00710    return 1;
00711 }

static int gtalk_is_answered ( struct gtalk client,
ikspak *  pak 
) [static]

Definition at line 606 of file chan_gtalk.c.

References AST_CONTROL_ANSWER, ast_getformatname_multiple(), ast_log(), ast_queue_control(), ast_queue_hangup(), ast_rtp_codecs_payload_formats(), ast_rtp_codecs_payloads_set_m_type(), ast_rtp_codecs_payloads_set_rtpmap_type(), ast_rtp_instance_get_codecs(), gtalk_pvt::capability, gtalk::connection, gtalk_response(), gtalk_update_stun(), aji_client::jid, gtalk_pvt::jointcapability, LOG_DEBUG, LOG_WARNING, gtalk_pvt::next, gtalk_pvt::owner, gtalk::p, gtalk_pvt::parent, gtalk_pvt::peercapability, gtalk_pvt::rtp, and gtalk_pvt::sid.

Referenced by gtalk_parser().

00607 {
00608    struct gtalk_pvt *tmp = NULL;
00609    char *from;
00610    iks *codec;
00611    char s1[BUFSIZ], s2[BUFSIZ], s3[BUFSIZ];
00612    int peernoncodeccapability;
00613 
00614    ast_log(LOG_DEBUG, "The client is %s\n", client->name);
00615 
00616    /* Make sure our new call does exist */
00617    for (tmp = client->p; tmp; tmp = tmp->next) {
00618       if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) {
00619          break;
00620       } else if (iks_find_with_attrib(pak->x, "ses:session", "id", tmp->sid)) {
00621          break;
00622       }
00623    }
00624 
00625    if (!tmp) {
00626       ast_log(LOG_WARNING, "Could not find session in iq\n");
00627       return -1;
00628    }
00629 
00630    /* codec points to the first <payload-type/> tag */
00631    codec = iks_first_tag(iks_first_tag(iks_first_tag(pak->x)));
00632    while (codec) {
00633       char *codec_id = iks_find_attrib(codec, "id");
00634       char *codec_name = iks_find_attrib(codec, "name");
00635       if (!codec_id || !codec_name) {
00636          codec = iks_next_tag(codec);
00637          continue;
00638       }
00639 
00640       ast_rtp_codecs_payloads_set_m_type(
00641          ast_rtp_instance_get_codecs(tmp->rtp),
00642          tmp->rtp,
00643          atoi(codec_id));
00644       ast_rtp_codecs_payloads_set_rtpmap_type(
00645          ast_rtp_instance_get_codecs(tmp->rtp),
00646          tmp->rtp,
00647          atoi(codec_id),
00648          "audio",
00649          codec_name,
00650          0);
00651       codec = iks_next_tag(codec);
00652    }
00653 
00654    /* Now gather all of the codecs that we are asked for */
00655    ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(tmp->rtp), &tmp->peercapability, &peernoncodeccapability);
00656 
00657    /* at this point, we received an awser from the remote Gtalk client,
00658       which allows us to compare capabilities */
00659    tmp->jointcapability = tmp->capability & tmp->peercapability;
00660    if (!tmp->jointcapability) {
00661       ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, tmp->capability),
00662          ast_getformatname_multiple(s2, BUFSIZ, tmp->peercapability),
00663          ast_getformatname_multiple(s3, BUFSIZ, tmp->jointcapability));
00664       /* close session if capabilities don't match */
00665       ast_queue_hangup(tmp->owner);
00666 
00667       return -1;
00668 
00669    }
00670 
00671    from = iks_find_attrib(pak->x, "to");
00672    if (!from) {
00673       from = client->connection->jid->full;
00674    }
00675 
00676    if (tmp->owner) {
00677       ast_queue_control(tmp->owner, AST_CONTROL_ANSWER);
00678    }
00679    gtalk_update_stun(tmp->parent, tmp);
00680    gtalk_response(client, from, pak, NULL, NULL);
00681    return 1;
00682 }

static int gtalk_load_config ( void   )  [static]

Definition at line 2076 of file chan_gtalk.c.

References gtalk::allowguest, ast_aji_client_destroy(), ast_aji_get_clients(), ast_calloc, ast_category_browse(), ast_config_destroy(), ast_config_load, ast_copy_string(), ast_gethostbyname(), ast_jb_read_conf(), ast_log(), AST_MAX_CONTEXT, ast_parse_allow_disallow(), ast_parse_arg(), ast_true(), ast_variable_browse(), ast_variable_retrieve(), ASTOBJ_CONTAINER_LINK, ASTOBJ_CONTAINER_TRAVERSE, ASTOBJ_INIT, ASTOBJ_UNLOCK, ASTOBJ_UNREF, ASTOBJ_WRLOCK, gtalk::capability, clients, CONFIG_STATUS_FILEINVALID, gtalk::connection, gtalk::context, context, global_jbconf, GOOGLE_CONFIG, GOOGLE_JINGLE_NS, GOOGLE_NS, gtalk_create_member(), gtalk_free_candidates(), gtalk_list, gtalk_member_destroy(), gtalk_parser(), gtalk_update_externip(), hp, LOG_ERROR, LOG_WARNING, ast_variable::name, ast_variable::next, gtalk::parkinglot, parkinglot, PARSE_INADDR, gtalk::prefs, STANDARD_STUN_PORT, stunaddr, gtalk::user, ast_variable::value, and var.

Referenced by load_module().

02077 {
02078    char *cat = NULL;
02079    struct ast_config *cfg = NULL;
02080    char context[AST_MAX_CONTEXT] = "";
02081    char parkinglot[AST_MAX_CONTEXT] = "";
02082    int allowguest = 1;
02083    struct ast_variable *var;
02084    struct gtalk *member;
02085    struct ast_codec_pref prefs = { "", };
02086    struct aji_client_container *clients;
02087    struct gtalk_candidate *global_candidates = NULL;
02088    struct hostent *hp;
02089    struct ast_hostent ahp;
02090    struct ast_flags config_flags = { 0 };
02091 
02092    cfg = ast_config_load(GOOGLE_CONFIG, config_flags);
02093    if (!cfg) {
02094       return 0;
02095    } else if (cfg == CONFIG_STATUS_FILEINVALID) {
02096       ast_log(LOG_ERROR, "Config file %s is in an invalid format.  Aborting.\n", GOOGLE_CONFIG);
02097       return 0;
02098    }
02099 
02100    /* Copy the default jb config over global_jbconf */
02101    memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
02102 
02103    /* set defaults */
02104    memset(&stunaddr, 0, sizeof(stunaddr));
02105 
02106    cat = ast_category_browse(cfg, NULL);
02107    for (var = ast_variable_browse(cfg, "general"); var; var = var->next) {
02108       /* handle jb conf */
02109       if (!ast_jb_read_conf(&global_jbconf, var->name, var->value))
02110          continue;
02111 
02112       if (!strcasecmp(var->name, "allowguest")) {
02113          allowguest = (ast_true(ast_variable_retrieve(cfg, "general", "allowguest"))) ? 1 : 0;
02114       } else if (!strcasecmp(var->name, "disallow")) {
02115          ast_parse_allow_disallow(&prefs, &global_capability, var->value, 0);
02116       } else if (!strcasecmp(var->name, "allow")) {
02117          ast_parse_allow_disallow(&prefs, &global_capability, var->value, 1);
02118       } else if (!strcasecmp(var->name, "context")) {
02119          ast_copy_string(context, var->value, sizeof(context));
02120       } else if (!strcasecmp(var->name, "externip")) {
02121          ast_copy_string(externip, var->value, sizeof(externip));
02122       } else if (!strcasecmp(var->name, "parkinglot")) {
02123          ast_copy_string(parkinglot, var->value, sizeof(parkinglot));
02124       } else if (!strcasecmp(var->name, "bindaddr")) {
02125          if (!(hp = ast_gethostbyname(var->value, &ahp))) {
02126             ast_log(LOG_WARNING, "Invalid address: %s\n", var->value);
02127          } else {
02128             memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr));
02129          }
02130       } else if (!strcasecmp(var->name, "stunaddr")) {
02131          stunaddr.sin_port = htons(STANDARD_STUN_PORT);
02132          if (ast_parse_arg(var->value, PARSE_INADDR, &stunaddr)) {
02133             ast_log(LOG_WARNING, "Invalid STUN server address: %s\n", var->value);
02134          }
02135       }
02136    }
02137    while (cat) {
02138       if (strcasecmp(cat, "general")) {
02139          var = ast_variable_browse(cfg, cat);
02140          member = ast_calloc(1, sizeof(*member));
02141          ASTOBJ_INIT(member);
02142          ASTOBJ_WRLOCK(member);
02143          if (!strcasecmp(cat, "guest")) {
02144             ast_copy_string(member->name, "guest", sizeof(member->name));
02145             ast_copy_string(member->user, "guest", sizeof(member->user));
02146             ast_copy_string(member->context, context, sizeof(member->context));
02147             ast_copy_string(member->parkinglot, parkinglot, sizeof(member->parkinglot));
02148             member->allowguest = allowguest;
02149             member->prefs = prefs;
02150             while (var) {
02151                if (!strcasecmp(var->name, "disallow")) {
02152                   ast_parse_allow_disallow(&member->prefs, &member->capability,
02153                                      var->value, 0);
02154                } else if (!strcasecmp(var->name, "allow")) {
02155                   ast_parse_allow_disallow(&member->prefs, &member->capability,
02156                                      var->value, 1);
02157                } else if (!strcasecmp(var->name, "context")) {
02158                   ast_copy_string(member->context, var->value,
02159                               sizeof(member->context));
02160                } else if (!strcasecmp(var->name, "parkinglot")) {
02161                   ast_copy_string(member->parkinglot, var->value,
02162                               sizeof(member->parkinglot));
02163                }
02164                var = var->next;
02165             }
02166             ASTOBJ_UNLOCK(member);
02167             clients = ast_aji_get_clients();
02168             if (clients) {
02169                ASTOBJ_CONTAINER_TRAVERSE(clients, 1, {
02170                   ASTOBJ_WRLOCK(iterator);
02171                   ASTOBJ_WRLOCK(member);
02172                   if (member->connection) {
02173                      ASTOBJ_UNREF(member->connection, ast_aji_client_destroy);
02174                   }
02175                   member->connection = NULL;
02176                   iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, GOOGLE_NS, IKS_RULE_DONE);
02177                   iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, GOOGLE_JINGLE_NS, IKS_RULE_DONE);
02178                   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);
02179                   ASTOBJ_UNLOCK(member);
02180                   ASTOBJ_UNLOCK(iterator);
02181                });
02182                ASTOBJ_CONTAINER_LINK(&gtalk_list, member);
02183                ASTOBJ_UNREF(member, gtalk_member_destroy);
02184             } else {
02185                ASTOBJ_UNLOCK(member);
02186                ASTOBJ_UNREF(member, gtalk_member_destroy);
02187             }
02188          } else {
02189             ASTOBJ_UNLOCK(member);
02190             if (gtalk_create_member(cat, var, allowguest, prefs, context, member))
02191                ASTOBJ_CONTAINER_LINK(&gtalk_list, member);
02192             ASTOBJ_UNREF(member, gtalk_member_destroy);
02193          }
02194       }
02195       cat = ast_category_browse(cfg, cat);
02196    }
02197 
02198    ast_config_destroy(cfg);
02199    gtalk_update_externip();
02200    gtalk_free_candidates(global_candidates);
02201    return 1;
02202 }

static void gtalk_member_destroy ( struct gtalk obj  )  [static]

Definition at line 241 of file chan_gtalk.c.

References ast_free.

Referenced by gtalk_load_config(), gtalk_parser(), gtalk_request(), and unload_module().

00242 {
00243    ast_free(obj);
00244 }

static struct ast_channel* gtalk_new ( struct gtalk client,
struct gtalk_pvt i,
int  state,
const char *  title,
const char *  linkedid 
) [static, read]

Start new gtalk channel.

Definition at line 1081 of file chan_gtalk.c.

References accountcode, gtalk::accountcode, ast_channel::adsicpe, ast_channel::amaflags, gtalk::amaflags, AST_ADSI_UNAVAILABLE, ast_best_codec(), AST_CAUSE_SWITCH_CONGESTION, ast_channel_alloc, ast_channel_set_fd(), ast_codec_choose(), ast_copy_string(), AST_FORMAT_VIDEO_MASK, ast_hangup(), ast_jb_configure(), ast_log(), ast_module_ref(), ast_pbx_start(), ast_random(), ast_rtp_codecs_packetization_set(), ast_rtp_instance_fd(), ast_rtp_instance_get_codecs(), AST_STATE_DOWN, AST_STATE_RING, ast_strdup, ast_string_field_set, ast_strlen_zero(), ast_channel::caller, gtalk::callgroup, ast_channel::callgroup, gtalk::callingpres, gtalk_pvt::capability, gtalk_pvt::cid_name, gtalk_pvt::cid_num, ast_channel::context, gtalk::context, ast_channel::dialed, EVENT_FLAG_SYSTEM, ast_channel::exten, gtalk_pvt::exten, global_jbconf, ast_channel::hangupcause, ast_party_caller::id, gtalk_pvt::jointcapability, language, gtalk::language, LOG_WARNING, manager_event, musicclass, gtalk::musicclass, ast_party_id::name, ast_channel::nativeformats, ast_party_dialed::number, ast_party_id::number, gtalk_pvt::owner, parkinglot, gtalk::parkinglot, gtalk::pickupgroup, ast_channel::pickupgroup, gtalk_pvt::prefs, ast_party_number::presentation, ast_party_name::presentation, ast_channel::priority, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readformat, ast_channel::rings, gtalk_pvt::rtp, gtalk_pvt::sid, ast_party_dialed::str, ast_channel::tech, ast_channel::tech_pvt, gtalk_pvt::us, gtalk_pvt::vrtp, and ast_channel::writeformat.

Referenced by gtalk_newcall(), and gtalk_request().

01082 {
01083    struct ast_channel *tmp;
01084    int fmt;
01085    int what;
01086    const char *n2;
01087 
01088    if (title)
01089       n2 = title;
01090    else
01091       n2 = i->us;
01092    tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, linkedid,
01093       client->accountcode, i->exten, client->context, client->amaflags,
01094       "Gtalk/%s-%04lx", n2, (long unsigned)(ast_random() & 0xffff));
01095    if (!tmp) {
01096       ast_log(LOG_WARNING, "Unable to allocate Gtalk channel structure!\n");
01097       return NULL;
01098    }
01099    tmp->tech = &gtalk_tech;
01100 
01101    /* Select our native format based on codec preference until we receive
01102       something from another device to the contrary. */
01103    if (i->jointcapability)
01104       what = i->jointcapability;
01105    else if (i->capability)
01106       what = i->capability;
01107    else
01108       what = global_capability;
01109 
01110    /* Set Frame packetization */
01111    if (i->rtp) {
01112       ast_rtp_codecs_packetization_set(ast_rtp_instance_get_codecs(i->rtp), i->rtp, &i->prefs);
01113    }
01114 
01115    tmp->nativeformats = ast_codec_choose(&i->prefs, what, 1) | (i->jointcapability & AST_FORMAT_VIDEO_MASK);
01116    fmt = ast_best_codec(tmp->nativeformats);
01117 
01118    if (i->rtp) {
01119       ast_channel_set_fd(tmp, 0, ast_rtp_instance_fd(i->rtp, 0));
01120       ast_channel_set_fd(tmp, 1, ast_rtp_instance_fd(i->rtp, 1));
01121    }
01122    if (i->vrtp) {
01123       ast_channel_set_fd(tmp, 2, ast_rtp_instance_fd(i->vrtp, 0));
01124       ast_channel_set_fd(tmp, 3, ast_rtp_instance_fd(i->vrtp, 1));
01125    }
01126    if (state == AST_STATE_RING)
01127       tmp->rings = 1;
01128    tmp->adsicpe = AST_ADSI_UNAVAILABLE;
01129    tmp->writeformat = fmt;
01130    tmp->rawwriteformat = fmt;
01131    tmp->readformat = fmt;
01132    tmp->rawreadformat = fmt;
01133    tmp->tech_pvt = i;
01134 
01135    tmp->callgroup = client->callgroup;
01136    tmp->pickupgroup = client->pickupgroup;
01137    tmp->caller.id.name.presentation = client->callingpres;
01138    tmp->caller.id.number.presentation = client->callingpres;
01139    if (!ast_strlen_zero(client->accountcode))
01140       ast_string_field_set(tmp, accountcode, client->accountcode);
01141    if (client->amaflags)
01142       tmp->amaflags = client->amaflags;
01143    if (!ast_strlen_zero(client->language))
01144       ast_string_field_set(tmp, language, client->language);
01145    if (!ast_strlen_zero(client->musicclass))
01146       ast_string_field_set(tmp, musicclass, client->musicclass);
01147    if (!ast_strlen_zero(client->parkinglot))
01148       ast_string_field_set(tmp, parkinglot, client->parkinglot);
01149    i->owner = tmp;
01150    ast_module_ref(ast_module_info->self);
01151    ast_copy_string(tmp->context, client->context, sizeof(tmp->context));
01152    ast_copy_string(tmp->exten, i->exten, sizeof(tmp->exten));
01153 
01154    if (!ast_strlen_zero(i->exten) && strcmp(i->exten, "s")) {
01155       tmp->dialed.number.str = ast_strdup(i->exten);
01156    }
01157    tmp->priority = 1;
01158    if (i->rtp)
01159       ast_jb_configure(tmp, &global_jbconf);
01160    if (state != AST_STATE_DOWN && ast_pbx_start(tmp)) {
01161       ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
01162       tmp->hangupcause = AST_CAUSE_SWITCH_CONGESTION;
01163       ast_hangup(tmp);
01164       tmp = NULL;
01165    } else {
01166       manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate",
01167          "Channel: %s\r\nChanneltype: %s\r\nGtalk-SID: %s\r\n",
01168          i->owner ? i->owner->name : "", "Gtalk", i->sid);
01169    }
01170    return tmp;
01171 }

static int gtalk_newcall ( struct gtalk client,
ikspak *  pak 
) [static]

Definition at line 1249 of file chan_gtalk.c.

References gtalk_pvt::alreadygone, ast_aji_client_destroy(), ast_aji_get_client(), ast_channel_release(), ast_copy_string(), ast_getformatname_multiple(), ast_log(), ast_mutex_lock, ast_mutex_unlock, AST_PBX_CALL_LIMIT, AST_PBX_FAILED, ast_pbx_start(), AST_PBX_SUCCESS, ast_rtp_codecs_payload_formats(), ast_rtp_codecs_payloads_set_m_type(), ast_rtp_codecs_payloads_set_rtpmap_type(), ast_rtp_instance_get_codecs(), ast_setstate(), AST_STATE_DOWN, AST_STATE_RING, ASTOBJ_UNREF, gtalk_pvt::capability, gtalk::connection, gtalk_action(), gtalk_alloc(), gtalk_create_candidates(), gtalk_free_pvt(), gtalk_hangup(), gtalk_new(), gtalk_response(), aji_client::jid, gtalk_pvt::jointcapability, gtalk_pvt::lock, LOG_ERROR, LOG_NOTICE, LOG_WARNING, gtalk_pvt::next, gtalk::p, gtalk_pvt::peercapability, gtalk_pvt::rtp, S_OR, gtalk_pvt::sid, gtalk_pvt::them, gtalk_pvt::us, and gtalk_pvt::vrtp.

Referenced by gtalk_parser().

01250 {
01251    struct gtalk_pvt *p, *tmp = client->p;
01252    struct ast_channel *chan;
01253    int res;
01254    iks *codec;
01255    char *from = NULL;
01256    char s1[BUFSIZ], s2[BUFSIZ], s3[BUFSIZ];
01257    int peernoncodeccapability;
01258    char *sid;
01259 
01260    /* Make sure our new call doesn't exist yet */
01261    from = iks_find_attrib(pak->x,"to");
01262    if (!from) {
01263       from = client->connection->jid->full;
01264    }
01265 
01266    while (tmp) {
01267       if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid) ||
01268          (iks_find_attrib(pak->query, "id") && !strcmp(iks_find_attrib(pak->query, "id"), tmp->sid))) {
01269          ast_log(LOG_NOTICE, "Ignoring duplicate call setup on SID %s\n", tmp->sid);
01270          gtalk_response(client, from, pak, "out-of-order", NULL);
01271          return -1;
01272       }
01273       tmp = tmp->next;
01274    }
01275 
01276    if (!strcasecmp(client->name, "guest")){
01277       /* the guest account is not tied to any configured XMPP client,
01278          let's set it now */
01279       if (client->connection) {
01280          ASTOBJ_UNREF(client->connection, ast_aji_client_destroy);
01281       }
01282       client->connection = ast_aji_get_client(from);
01283       if (!client->connection) {
01284          ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", from);
01285          return -1;
01286       }
01287    }
01288 
01289    if (!(sid = iks_find_attrib(pak->query, "id"))) {
01290       ast_log(LOG_WARNING, "Received Initiate without id attribute. Can not start call.\n");
01291       return -1;
01292    }
01293 
01294    p = gtalk_alloc(client, from, pak->from->full, sid);
01295    if (!p) {
01296       ast_log(LOG_WARNING, "Unable to allocate gtalk structure!\n");
01297       return -1;
01298    }
01299 
01300    chan = gtalk_new(client, p, AST_STATE_DOWN, pak->from->user, NULL);
01301    if (!chan) {
01302       gtalk_free_pvt(client, p);
01303       return -1;
01304    }
01305 
01306    ast_mutex_lock(&p->lock);
01307    ast_copy_string(p->them, pak->from->full, sizeof(p->them));
01308    ast_copy_string(p->sid, sid, sizeof(p->sid));
01309 
01310    /* codec points to the first <payload-type/> tag */
01311    codec = iks_first_tag(iks_first_tag(pak->query));
01312 
01313    while (codec) {
01314       char *codec_id = iks_find_attrib(codec, "id");
01315       char *codec_name = iks_find_attrib(codec, "name");
01316       if (!codec_id || !codec_name) {
01317          codec = iks_next_tag(codec);
01318          continue;
01319       }
01320       if (!strcmp(S_OR(iks_name(codec), ""), "vid:payload-type") && p->vrtp) {
01321          ast_rtp_codecs_payloads_set_m_type(
01322             ast_rtp_instance_get_codecs(p->vrtp),
01323             p->vrtp,
01324             atoi(codec_id));
01325          ast_rtp_codecs_payloads_set_rtpmap_type(
01326             ast_rtp_instance_get_codecs(p->vrtp),
01327             p->vrtp,
01328             atoi(codec_id),
01329             "video",
01330             codec_name,
01331             0);
01332       } else {
01333          ast_rtp_codecs_payloads_set_m_type(
01334             ast_rtp_instance_get_codecs(p->rtp),
01335             p->rtp,
01336             atoi(codec_id));
01337          ast_rtp_codecs_payloads_set_rtpmap_type(
01338             ast_rtp_instance_get_codecs(p->rtp),
01339             p->rtp,
01340             atoi(codec_id),
01341             "audio",
01342             codec_name,
01343             0);
01344       }
01345       codec = iks_next_tag(codec);
01346    }
01347 
01348    /* Now gather all of the codecs that we are asked for */
01349    ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(p->rtp), &p->peercapability, &peernoncodeccapability);
01350    p->jointcapability = p->capability & p->peercapability;
01351    ast_mutex_unlock(&p->lock);
01352 
01353    ast_setstate(chan, AST_STATE_RING);
01354    if (!p->jointcapability) {
01355       ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, p->capability),
01356          ast_getformatname_multiple(s2, BUFSIZ, p->peercapability),
01357          ast_getformatname_multiple(s3, BUFSIZ, p->jointcapability));
01358       /* close session if capabilities don't match */
01359       gtalk_action(client, p, "reject");
01360       p->alreadygone = 1;
01361       gtalk_hangup(chan);
01362       ast_channel_release(chan);
01363       return -1;
01364    }
01365 
01366    res = ast_pbx_start(chan);
01367 
01368    switch (res) {
01369    case AST_PBX_FAILED:
01370       ast_log(LOG_WARNING, "Failed to start PBX :(\n");
01371       gtalk_response(client, from, pak, "service-unavailable", NULL);
01372       break;
01373    case AST_PBX_CALL_LIMIT:
01374       ast_log(LOG_WARNING, "Failed to start PBX (call limit reached) \n");
01375       gtalk_response(client, from, pak, "service-unavailable", NULL);
01376       break;
01377    case AST_PBX_SUCCESS:
01378       gtalk_response(client, from, pak, NULL, NULL);
01379       gtalk_create_candidates(client, p, p->sid, p->them, p->us);
01380       /* nothing to do */
01381       break;
01382    }
01383 
01384    return 1;
01385 }

static int gtalk_parser ( void *  data,
ikspak *  pak 
) [static]

CLI command "gtalk reload".

Todo:
XXX TODO make this work.

Definition at line 1985 of file chan_gtalk.c.

References ast_debug, ast_log(), ast_strlen_zero(), ASTOBJ_REF, ASTOBJ_UNREF, gtalk_add_candidate(), gtalk_handle_dtmf(), gtalk_hangup_farend(), gtalk_is_accepted(), gtalk_is_answered(), gtalk_member_destroy(), gtalk_newcall(), LOG_NOTICE, LOG_WARNING, and S_OR.

Referenced by gtalk_create_member(), and gtalk_load_config().

01986 {
01987    struct gtalk *client = ASTOBJ_REF((struct gtalk *) data);
01988    int res;
01989    iks *tmp;
01990 
01991    if (!strcasecmp(iks_name(pak->query), "jin:jingle") && (tmp = iks_next(pak->query)) && !strcasecmp(iks_name(tmp), "ses:session")) {
01992       ast_debug(1, "New method detected. Skipping jingle offer and using old gtalk method.\n");
01993       pak->query = tmp;
01994    }
01995 
01996    if (!strcmp(S_OR(iks_find_attrib(pak->x, "type"), ""), "error")) {
01997       ast_log(LOG_NOTICE, "Remote peer reported an error, trying to establish the call anyway\n");
01998    }
01999 
02000    if (ast_strlen_zero(iks_find_attrib(pak->query, "type"))) {
02001       ast_log(LOG_NOTICE, "No attribute \"type\" found.  Ignoring message.\n");
02002    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "initiate")) {
02003       /* New call */
02004       gtalk_newcall(client, pak);
02005    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "candidates") || !strcmp(iks_find_attrib(pak->query, "type"), "transport-info")) {
02006       ast_debug(3, "About to add candidate!\n");
02007       res = gtalk_add_candidate(client, pak);
02008       if (!res) {
02009          ast_log(LOG_WARNING, "Could not add any candidate\n");
02010       } else {
02011          ast_debug(3, "Candidate Added!\n");
02012       }
02013    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "accept")) {
02014       gtalk_is_answered(client, pak);
02015    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "transport-accept")) {
02016       gtalk_is_accepted(client, pak);
02017    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "content-info") || iks_find_with_attrib(pak->x, "gtalk", "action", "session-info")) {
02018       gtalk_handle_dtmf(client, pak);
02019    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "terminate")) {
02020       gtalk_hangup_farend(client, pak);
02021    } else if (!strcmp(iks_find_attrib(pak->query, "type"), "reject")) {
02022       gtalk_hangup_farend(client, pak);
02023    }
02024    ASTOBJ_UNREF(client, gtalk_member_destroy);
02025    return IKS_FILTER_EAT;
02026 }

static struct ast_frame * gtalk_read ( struct ast_channel ast  )  [static, read]

Definition at line 1597 of file chan_gtalk.c.

References ast_mutex_lock, ast_mutex_unlock, gtalk_rtp_read(), gtalk_pvt::lock, and ast_channel::tech_pvt.

01598 {
01599    struct ast_frame *fr;
01600    struct gtalk_pvt *p = ast->tech_pvt;
01601 
01602    ast_mutex_lock(&p->lock);
01603    fr = gtalk_rtp_read(ast, p);
01604    ast_mutex_unlock(&p->lock);
01605    return fr;
01606 }

static struct ast_channel * gtalk_request ( const char *  type,
format_t  format,
const struct ast_channel requestor,
void *  data,
int *  cause 
) [static, read]

Part of PBX interface.

Definition at line 1853 of file chan_gtalk.c.

References ast_aji_client_destroy(), ast_aji_get_client(), ast_log(), AST_STATE_DOWN, ast_strdupa, ASTOBJ_UNLOCK, ASTOBJ_UNREF, ASTOBJ_WRLOCK, gtalk::connection, find_gtalk(), gtalk_alloc(), gtalk_member_destroy(), gtalk_new(), aji_client::jid, LOG_ERROR, LOG_WARNING, and gtalk::user.

01854 {
01855    struct gtalk_pvt *p = NULL;
01856    struct gtalk *client = NULL;
01857    char *sender = NULL, *to = NULL, *s = NULL;
01858    struct ast_channel *chan = NULL;
01859 
01860    if (data) {
01861       s = ast_strdupa(data);
01862       sender = strsep(&s, "/");
01863       if (sender && (sender[0] != '\0')) {
01864          to = strsep(&s, "/");
01865       }
01866       if (!to) {
01867          ast_log(LOG_ERROR, "Bad arguments in Gtalk Dialstring: %s\n", (char*) data);
01868          return NULL;
01869       }
01870    }
01871 
01872    client = find_gtalk(to, sender);
01873    if (!client) {
01874       ast_log(LOG_WARNING, "Could not find recipient.\n");
01875       return NULL;
01876    }
01877    if (!strcasecmp(client->name, "guest")){
01878       /* the guest account is not tied to any configured XMPP client,
01879          let's set it now */
01880       if (client->connection) {
01881          ASTOBJ_UNREF(client->connection, ast_aji_client_destroy);
01882       }
01883       client->connection = ast_aji_get_client(sender);
01884       if (!client->connection) {
01885          ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", sender);
01886          ASTOBJ_UNREF(client, gtalk_member_destroy);
01887          return NULL;
01888       }
01889    }
01890 
01891    ASTOBJ_WRLOCK(client);
01892    p = gtalk_alloc(client, strchr(sender, '@') ? sender : client->connection->jid->full, strchr(to, '@') ? to : client->user, NULL);
01893    if (p) {
01894       chan = gtalk_new(client, p, AST_STATE_DOWN, to, requestor ? requestor->linkedid : NULL);
01895    }
01896    ASTOBJ_UNLOCK(client);
01897    return chan;
01898 }

static int gtalk_response ( struct gtalk client,
char *  from,
ikspak *  pak,
const char *  reasonstr,
const char *  reasonstr2 
) [static]

Definition at line 574 of file chan_gtalk.c.

References ast_aji_send(), gtalk::connection, and S_OR.

Referenced by gtalk_handle_dtmf(), gtalk_hangup_farend(), gtalk_is_accepted(), gtalk_is_answered(), and gtalk_newcall().

00575 {
00576    iks *response = NULL, *error = NULL, *reason = NULL;
00577    int res = -1;
00578 
00579    response = iks_new("iq");
00580    if (response) {
00581       iks_insert_attrib(response, "type", "result");
00582       iks_insert_attrib(response, "from", from);
00583       iks_insert_attrib(response, "to", S_OR(iks_find_attrib(pak->x, "from"), ""));
00584       iks_insert_attrib(response, "id", S_OR(iks_find_attrib(pak->x, "id"), ""));
00585       if (reasonstr) {
00586          error = iks_new("error");
00587          if (error) {
00588             iks_insert_attrib(error, "type", "cancel");
00589             reason = iks_new(reasonstr);
00590             if (reason)
00591                iks_insert_node(error, reason);
00592             iks_insert_node(response, error);
00593          }
00594       }
00595       ast_aji_send(client->connection, response);
00596       res = 0;
00597    }
00598 
00599    iks_delete(reason);
00600    iks_delete(error);
00601    iks_delete(response);
00602 
00603    return res;
00604 }

static int gtalk_ringing_ack ( void *  data,
ikspak *  pak 
) [static]

Definition at line 461 of file chan_gtalk.c.

References AST_CONTROL_RINGING, ast_copy_string(), ast_log(), ast_mutex_lock, ast_mutex_unlock, ast_queue_control(), gtalk::connection, aji_client::f, gtalk_create_candidates(), gtalk_invite(), gtalk_pvt::lock, LOG_DEBUG, name, gtalk_pvt::owner, gtalk_pvt::parent, gtalk_pvt::ringrule, S_OR, gtalk_pvt::sid, gtalk_pvt::them, and gtalk_pvt::us.

Referenced by gtalk_call().

00462 {
00463    struct gtalk_pvt *p = data;
00464    struct ast_channel *owner;
00465 
00466    ast_mutex_lock(&p->lock);
00467 
00468    if (p->ringrule) {
00469       iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
00470    }
00471    p->ringrule = NULL;
00472 
00473    /* this may be a redirect */
00474    if (!strcmp(S_OR(iks_find_attrib(pak->x, "type"), ""), "error")) {
00475       char *name = NULL;
00476       char *redirect = NULL;
00477       iks *traversenodes = NULL;
00478       traversenodes = pak->query;
00479       while (traversenodes) {
00480          if (!(name = iks_name(traversenodes))) {
00481             break;
00482          }
00483          if (!strcasecmp(name, "error") &&
00484             ((redirect = iks_find_cdata(traversenodes, "redirect")) ||
00485               (redirect = iks_find_cdata(traversenodes, "sta:redirect"))) &&
00486             (redirect = strstr(redirect, "xmpp:"))) {
00487             redirect += 5;
00488             ast_log(LOG_DEBUG, "redirect %s\n", redirect);
00489             ast_copy_string(p->them, redirect, sizeof(p->them));
00490 
00491             gtalk_invite(p, p->them, p->us, p->sid, 1);
00492             break;
00493          }
00494          traversenodes = iks_next_tag(traversenodes);
00495       }
00496    }
00497    gtalk_create_candidates(p->parent, p, p->sid, p->them, p->us);
00498    owner = p->owner;
00499    ast_mutex_unlock(&p->lock);
00500 
00501    if (owner) {
00502       ast_queue_control(owner, AST_CONTROL_RINGING);
00503    }
00504 
00505    return IKS_FILTER_EAT;
00506 }

static struct ast_frame* gtalk_rtp_read ( struct ast_channel ast,
struct gtalk_pvt p 
) [static, read]

Definition at line 1568 of file chan_gtalk.c.

References ast_debug, AST_FORMAT_AUDIO_MASK, AST_FORMAT_VIDEO_MASK, AST_FRAME_VOICE, ast_getformatname(), ast_null_frame, ast_rtp_instance_read(), ast_set_read_format(), ast_set_write_format(), ast_frame_subclass::codec, f, ast_frame::frametype, gtalk_update_stun(), ast_channel::nativeformats, gtalk_pvt::owner, gtalk_pvt::parent, ast_channel::readformat, gtalk_pvt::rtp, ast_frame::subclass, and ast_channel::writeformat.

Referenced by gtalk_read().

01569 {
01570    struct ast_frame *f;
01571 
01572    if (!p->rtp) {
01573       return &ast_null_frame;
01574    }
01575    f = ast_rtp_instance_read(p->rtp, 0);
01576    gtalk_update_stun(p->parent, p);
01577    if (p->owner) {
01578       /* We already hold the channel lock */
01579       if (f->frametype == AST_FRAME_VOICE) {
01580          if (f->subclass.codec != (p->owner->nativeformats & AST_FORMAT_AUDIO_MASK)) {
01581             ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(f->subclass.codec));
01582             p->owner->nativeformats =
01583                (p->owner->nativeformats & AST_FORMAT_VIDEO_MASK) | f->subclass.codec;
01584             ast_set_read_format(p->owner, p->owner->readformat);
01585             ast_set_write_format(p->owner, p->owner->writeformat);
01586          }
01587          /* if ((ast_test_flag(p, SIP_DTMF) == SIP_DTMF_INBAND) && p->vad) {
01588             f = ast_dsp_process(p->owner, p->vad, f);
01589             if (option_debug && f && (f->frametype == AST_FRAME_DTMF))
01590                ast_debug(1, "* Detected inband DTMF '%c'\n", f->subclass);
01591            } */
01592       }
01593    }
01594    return f;
01595 }

static int gtalk_sendhtml ( struct ast_channel ast,
int  subclass,
const char *  data,
int  datalen 
) [static]

Definition at line 1799 of file chan_gtalk.c.

References ast_log(), and LOG_NOTICE.

01800 {
01801    ast_log(LOG_NOTICE, "XXX Implement gtalk sendhtml XXX\n");
01802 
01803    return -1;
01804 }

static int gtalk_sendtext ( struct ast_channel ast,
const char *  text 
) [static]

Definition at line 1689 of file chan_gtalk.c.

References ast_aji_send_chat(), ast_log(), gtalk::connection, LOG_ERROR, gtalk_pvt::parent, ast_channel::tech_pvt, and gtalk_pvt::them.

01690 {
01691    int res = 0;
01692    struct aji_client *client = NULL;
01693    struct gtalk_pvt *p = chan->tech_pvt;
01694 
01695    if (!p->parent) {
01696       ast_log(LOG_ERROR, "Parent channel not found\n");
01697       return -1;
01698    }
01699    if (!p->parent->connection) {
01700       ast_log(LOG_ERROR, "XMPP client not found\n");
01701       return -1;
01702    }
01703    client = p->parent->connection;
01704    res = ast_aji_send_chat(client, p->them, text);
01705    return res;
01706 }

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 
) [static]

Definition at line 547 of file chan_gtalk.c.

References ast_mutex_lock, ast_mutex_unlock, gtalk_pvt::lock, and ast_channel::tech_pvt.

00548 {
00549    struct gtalk_pvt *p;
00550 
00551    p = chan->tech_pvt;
00552    if (!p)
00553       return -1;
00554    ast_mutex_lock(&p->lock);
00555 
00556 /* if (rtp)
00557       ast_rtp_get_peer(rtp, &p->redirip);
00558    else
00559       memset(&p->redirip, 0, sizeof(p->redirip));
00560    p->redircodecs = codecs; */
00561 
00562    /* Reset lastrtprx timer */
00563    ast_mutex_unlock(&p->lock);
00564    return 0;
00565 }

static char * gtalk_show_channels ( struct ast_cli_entry e,
int  cmd,
struct ast_cli_args a 
) [static]

CLI command "gtalk show channels".

Definition at line 1901 of file chan_gtalk.c.

References AJI_MAX_JIDLEN, ast_cli_args::argc, ast_cli(), ast_copy_string(), ast_getformatname(), ast_log(), ast_mutex_lock, ast_mutex_unlock, ASTOBJ_CONTAINER_TRAVERSE, ASTOBJ_UNLOCK, ASTOBJ_WRLOCK, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, FORMAT, gtalk_list, LOG_WARNING, gtalk_pvt::next, gtalk_pvt::owner, ast_channel::readformat, gtalk_pvt::them, ast_cli_entry::usage, and ast_channel::writeformat.

01902 {
01903 #define FORMAT  "%-30.30s  %-30.30s  %-15.15s  %-5.5s %-5.5s \n"
01904    struct gtalk_pvt *p;
01905    struct ast_channel *chan;
01906    int numchans = 0;
01907    char them[AJI_MAX_JIDLEN];
01908    char *jid = NULL;
01909    char *resource = NULL;
01910 
01911    switch (cmd) {
01912    case CLI_INIT:
01913       e->command = "gtalk show channels";
01914       e->usage =
01915          "Usage: gtalk show channels\n"
01916          "       Shows current state of the Gtalk channels.\n";
01917       return NULL;
01918    case CLI_GENERATE:
01919       return NULL;
01920    }
01921 
01922    if (a->argc != 3)
01923       return CLI_SHOWUSAGE;
01924 
01925    ast_mutex_lock(&gtalklock);
01926    ast_cli(a->fd, FORMAT, "Channel", "Jabber ID", "Resource", "Read", "Write");
01927    ASTOBJ_CONTAINER_TRAVERSE(&gtalk_list, 1, {
01928       ASTOBJ_WRLOCK(iterator);
01929       p = iterator->p;
01930       while(p) {
01931          chan = p->owner;
01932          ast_copy_string(them, p->them, sizeof(them));
01933          jid = them;
01934          resource = strchr(them, '/');
01935          if (!resource)
01936             resource = "None";
01937          else {
01938             *resource = '\0';
01939             resource ++;
01940          }
01941          if (chan)
01942             ast_cli(a->fd, FORMAT,
01943                chan->name,
01944                jid,
01945                resource,
01946                ast_getformatname(chan->readformat),
01947                ast_getformatname(chan->writeformat)
01948                );
01949          else
01950             ast_log(LOG_WARNING, "No available channel\n");
01951          numchans ++;
01952          p = p->next;
01953       }
01954       ASTOBJ_UNLOCK(iterator);
01955    });
01956 
01957    ast_mutex_unlock(&gtalklock);
01958 
01959    ast_cli(a->fd, "%d active gtalk channel%s\n", numchans, (numchans != 1) ? "s" : "");
01960    return CLI_SUCCESS;
01961 #undef FORMAT
01962 }

static int gtalk_update_externip ( void   )  [static]

Definition at line 1387 of file chan_gtalk.c.

References ast_connect(), ast_inet_ntoa(), ast_log(), ast_sockaddr_from_sin, ast_sockaddr_stringify(), ast_strdupa, ast_stun_request(), errno, LOG_WARNING, and stunaddr.

Referenced by gtalk_create_candidates(), and gtalk_load_config().

01388 {
01389    int sock;
01390    char *newaddr;
01391    struct sockaddr_in answer = { 0, };
01392    struct sockaddr_in *dst;
01393    struct ast_sockaddr tmp_dst;
01394 
01395    if (!stunaddr.sin_addr.s_addr) {
01396       return -1;
01397    }
01398    dst = &stunaddr;
01399 
01400    sock = socket(AF_INET, SOCK_DGRAM, 0);
01401    if (sock < 0) {
01402       ast_log(LOG_WARNING, "Unable to create STUN socket: %s\n", strerror(errno));
01403       return -1;
01404    }
01405 
01406    ast_sockaddr_from_sin(&tmp_dst, dst);
01407    if (ast_connect(sock, &tmp_dst) != 0) {
01408       ast_log(LOG_WARNING, "STUN Failed to connect to %s\n", ast_sockaddr_stringify(&tmp_dst));
01409       close(sock);
01410       return -1;
01411    }
01412 
01413    if ((ast_stun_request(sock, &stunaddr, NULL, &answer))) {
01414       close(sock);
01415       return -1;
01416    }
01417 
01418    newaddr = ast_strdupa(ast_inet_ntoa(answer.sin_addr));
01419    memcpy(externip, newaddr, sizeof(externip));
01420 
01421    close(sock);
01422    return 0;
01423 
01424 }

static int gtalk_update_stun ( struct gtalk client,
struct gtalk_pvt p 
) [static]

Definition at line 1426 of file chan_gtalk.c.

References ast_debug, ast_gethostbyname(), ast_inet_ntoa(), ast_log(), ast_rtp_instance_get_remote_address(), ast_rtp_instance_stun_request(), ast_sockaddr_from_sin, ast_sockaddr_to_sin, hp, gtalk_candidate::ip, gtalk_pvt::laststun, LOG_WARNING, gtalk_candidate::next, gtalk_pvt::ourcandidates, gtalk_candidate::port, gtalk_pvt::rtp, gtalk_pvt::theircandidates, and gtalk_candidate::username.

Referenced by gtalk_add_candidate(), gtalk_is_accepted(), gtalk_is_answered(), and gtalk_rtp_read().

01427 {
01428    struct gtalk_candidate *tmp;
01429    struct hostent *hp;
01430    struct ast_hostent ahp;
01431    struct sockaddr_in sin = { 0, };
01432    struct sockaddr_in aux = { 0, };
01433    struct ast_sockaddr sin_tmp;
01434    struct ast_sockaddr aux_tmp;
01435 
01436    if (time(NULL) == p->laststun)
01437       return 0;
01438 
01439    tmp = p->theircandidates;
01440    p->laststun = time(NULL);
01441    while (tmp) {
01442       char username[256];
01443 
01444       /* Find the IP address of the host */
01445       if (!(hp = ast_gethostbyname(tmp->ip, &ahp))) {
01446          ast_log(LOG_WARNING, "Could not get host by name for %s\n", tmp->ip);
01447          tmp = tmp->next;
01448          continue;
01449       }
01450       sin.sin_family = AF_INET;
01451       memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr));
01452       sin.sin_port = htons(tmp->port);
01453       snprintf(username, sizeof(username), "%s%s", tmp->username, p->ourcandidates->username);
01454 
01455       /* Find out the result of the STUN */
01456       ast_rtp_instance_get_remote_address(p->rtp, &aux_tmp);
01457       ast_sockaddr_to_sin(&aux_tmp, &aux);
01458 
01459       /* If the STUN result is different from the IP of the hostname,
01460        * lock on the stun IP of the hostname advertised by the
01461        * remote client */
01462       if (aux.sin_addr.s_addr && (aux.sin_addr.s_addr != sin.sin_addr.s_addr)) {
01463          ast_rtp_instance_stun_request(p->rtp, &aux_tmp, username);
01464       } else {
01465          ast_sockaddr_from_sin(&sin_tmp, &sin);
01466          ast_rtp_instance_stun_request(p->rtp, &sin_tmp, username);
01467       }
01468       if (aux.sin_addr.s_addr) {
01469          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);
01470          ast_debug(4, "Sending STUN request to %s\n", tmp->ip);
01471       }
01472 
01473       tmp = tmp->next;
01474    }
01475    return 1;
01476 }

static int gtalk_write ( struct ast_channel ast,
struct ast_frame f 
) [static]

Send frame to media channel (rtp).

Definition at line 1609 of file chan_gtalk.c.

References AST_FRAME_IMAGE, AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_getformatname(), ast_getformatname_multiple(), ast_log(), ast_mutex_lock, ast_mutex_unlock, ast_rtp_instance_write(), ast_frame_subclass::codec, ast_frame::frametype, gtalk_pvt::lock, LOG_WARNING, ast_channel::nativeformats, ast_channel::readformat, gtalk_pvt::rtp, ast_frame::subclass, ast_channel::tech_pvt, gtalk_pvt::vrtp, and ast_channel::writeformat.

01610 {
01611    struct gtalk_pvt *p = ast->tech_pvt;
01612    int res = 0;
01613    char buf[256];
01614 
01615    switch (frame->frametype) {
01616    case AST_FRAME_VOICE:
01617       if (!(frame->subclass.codec & ast->nativeformats)) {
01618          ast_log(LOG_WARNING,
01619                "Asked to transmit frame type %s, while native formats is %s (read/write = %s/%s)\n",
01620                ast_getformatname(frame->subclass.codec),
01621                ast_getformatname_multiple(buf, sizeof(buf), ast->nativeformats),
01622                ast_getformatname(ast->readformat),
01623                ast_getformatname(ast->writeformat));
01624          return 0;
01625       }
01626       if (p) {
01627          ast_mutex_lock(&p->lock);
01628          if (p->rtp) {
01629             res = ast_rtp_instance_write(p->rtp, frame);
01630          }
01631          ast_mutex_unlock(&p->lock);
01632       }
01633       break;
01634    case AST_FRAME_VIDEO:
01635       if (p) {
01636          ast_mutex_lock(&p->lock);
01637          if (p->vrtp) {
01638             res = ast_rtp_instance_write(p->vrtp, frame);
01639          }
01640          ast_mutex_unlock(&p->lock);
01641       }
01642       break;
01643    case AST_FRAME_IMAGE:
01644       return 0;
01645       break;
01646    default:
01647       ast_log(LOG_WARNING, "Can't send %u type frames with Gtalk write\n",
01648             frame->frametype);
01649       return 0;
01650    }
01651 
01652    return res;
01653 }

static int load_module ( void   )  [static]

Load module into PBX, register channel.

Definition at line 2205 of file chan_gtalk.c.

References __ourip, ARRAY_LEN, ast_channel_register(), ast_cli_register_multiple(), ast_log(), ast_module_helper(), AST_MODULE_LOAD_DECLINE, ast_rtp_glue_register, ast_sockaddr_from_sin, ast_sockaddr_ipv4(), ASTOBJ_CONTAINER_INIT, free, GOOGLE_CONFIG, gtalk_get_local_ip(), gtalk_list, gtalk_load_config(), io_context_create(), LOG_ERROR, LOG_WARNING, sched_context_create(), and ast_channel_tech::type.

02206 {
02207    struct ast_sockaddr bindaddr_tmp;
02208    struct ast_sockaddr ourip_tmp;
02209 
02210    char *jabber_loaded = ast_module_helper("", "res_jabber.so", 0, 0, 0, 0);
02211    free(jabber_loaded);
02212    if (!jabber_loaded) {
02213       /* If embedded, check for a different module name */
02214       jabber_loaded = ast_module_helper("", "res_jabber", 0, 0, 0, 0);
02215       free(jabber_loaded);
02216       if (!jabber_loaded) {
02217          ast_log(LOG_ERROR, "chan_gtalk.so depends upon res_jabber.so\n");
02218          return AST_MODULE_LOAD_DECLINE;
02219       }
02220    }
02221 
02222    ASTOBJ_CONTAINER_INIT(&gtalk_list);
02223    if (!gtalk_load_config()) {
02224       ast_log(LOG_ERROR, "Unable to read config file %s. Not loading module.\n", GOOGLE_CONFIG);
02225       return 0;
02226    }
02227 
02228    sched = sched_context_create();
02229    if (!sched) {
02230       ast_log(LOG_WARNING, "Unable to create schedule context\n");
02231    }
02232 
02233    io = io_context_create();
02234    if (!io) {
02235       ast_log(LOG_WARNING, "Unable to create I/O context\n");
02236    }
02237 
02238    ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
02239    if (gtalk_get_local_ip(&ourip_tmp)) {
02240       ast_log(LOG_WARNING, "Unable to get own IP address, Gtalk disabled\n");
02241       return 0;
02242    }
02243    __ourip.s_addr = htonl(ast_sockaddr_ipv4(&ourip_tmp));
02244 
02245    ast_rtp_glue_register(&gtalk_rtp_glue);
02246    ast_cli_register_multiple(gtalk_cli, ARRAY_LEN(gtalk_cli));
02247 
02248    /* Make sure we can register our channel type */
02249    if (ast_channel_register(&gtalk_tech)) {
02250       ast_log(LOG_ERROR, "Unable to register channel class %s\n", gtalk_tech.type);
02251       return -1;
02252    }
02253    return 0;
02254 }

static int unload_module ( void   )  [static]

Reload module.

Todo:
XXX TODO make this work.

Unload the gtalk channel from Asterisk

Definition at line 2265 of file chan_gtalk.c.

References ARRAY_LEN, ast_channel_unregister(), ast_cli_unregister_multiple(), ast_log(), ast_mutex_lock, ast_mutex_unlock, ast_rtp_glue_unregister(), ast_softhangup(), AST_SOFTHANGUP_APPUNLOAD, ASTOBJ_CONTAINER_DESTROY, ASTOBJ_CONTAINER_DESTROYALL, ASTOBJ_CONTAINER_TRAVERSE, ASTOBJ_UNLOCK, ASTOBJ_WRLOCK, gtalk_list, gtalk_member_destroy(), LOG_WARNING, gtalk_pvt::next, and gtalk_pvt::owner.

02266 {
02267    struct gtalk_pvt *privates = NULL;
02268    ast_cli_unregister_multiple(gtalk_cli, ARRAY_LEN(gtalk_cli));
02269    /* First, take us out of the channel loop */
02270    ast_channel_unregister(&gtalk_tech);
02271    ast_rtp_glue_unregister(&gtalk_rtp_glue);
02272 
02273    if (!ast_mutex_lock(&gtalklock)) {
02274       /* Hangup all interfaces if they have an owner */
02275       ASTOBJ_CONTAINER_TRAVERSE(&gtalk_list, 1, {
02276          ASTOBJ_WRLOCK(iterator);
02277          privates = iterator->p;
02278          while(privates) {
02279             if (privates->owner)
02280                ast_softhangup(privates->owner, AST_SOFTHANGUP_APPUNLOAD);
02281             privates = privates->next;
02282          }
02283          iterator->p = NULL;
02284          ASTOBJ_UNLOCK(iterator);
02285       });
02286       ast_mutex_unlock(&gtalklock);
02287    } else {
02288       ast_log(LOG_WARNING, "Unable to lock the monitor\n");
02289       return -1;
02290    }
02291    ASTOBJ_CONTAINER_DESTROYALL(&gtalk_list, gtalk_member_destroy);
02292    ASTOBJ_CONTAINER_DESTROY(&gtalk_list);
02293    return 0;
02294 }


Variable Documentation

struct in_addr __ourip [static]

Definition at line 229 of file chan_gtalk.c.

Referenced by load_module().

struct sockaddr_in bindaddr = { 0, } [static]
struct ast_jb_conf default_jbconf [static]

Global jitterbuffer configuration - by default, jb is disabled

Definition at line 83 of file chan_gtalk.c.

const char desc[] = "Gtalk Channel" [static]

Definition at line 169 of file chan_gtalk.c.

char externip[16] [static]

Definition at line 236 of file chan_gtalk.c.

format_t global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263 [static]

Definition at line 171 of file chan_gtalk.c.

struct ast_jb_conf global_jbconf [static]

Definition at line 91 of file chan_gtalk.c.

Referenced by gtalk_load_config(), and gtalk_new().

struct ast_cli_entry gtalk_cli[] [static]
Initial value:
 {

   AST_CLI_DEFINE(gtalk_show_channels, "Show GoogleTalk channels"),
}

Definition at line 231 of file chan_gtalk.c.

struct gtalk_container gtalk_list [static]
struct ast_rtp_glue gtalk_rtp_glue [static]

Definition at line 567 of file chan_gtalk.c.

struct ast_channel_tech gtalk_tech [static]

PBX interface structure for channel registration.

Definition at line 201 of file chan_gtalk.c.

struct io_context* io [static]

The IO context

Definition at line 228 of file chan_gtalk.c.

struct sched_context* sched [static]

The scheduling context

Definition at line 227 of file chan_gtalk.c.

struct sockaddr_in stunaddr [static]

the stun server we get the externip from

Definition at line 237 of file chan_gtalk.c.

Referenced by gtalk_load_config(), and gtalk_update_externip().


Generated on 17 Aug 2018 for Asterisk - The Open Source Telephony Project by  doxygen 1.6.1