channels/chan_gtalk.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2005, Digium, Inc.
   5  *
   6  * Matt O'Gorman <mogorman@digium.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \author Matt O'Gorman <mogorman@digium.com>
  22  *
  23  * \brief Gtalk Channel Driver, until google/libjingle works with jingle spec
  24  *
  25  * \ingroup channel_drivers
  26  */
  27
  28 /*** MODULEINFO
  29         <depend>iksemel</depend>
  30         <depend>res_jabber</depend>
  31         <use>openssl</use>
  32  ***/
  33
  34 #include "asterisk.h"
  35
  36 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  37
  38 #include <sys/socket.h>
  39 #include <fcntl.h>
  40 #include <netdb.h>
  41 #include <netinet/in.h>
  42 #include <arpa/inet.h>
  43 #include <sys/signal.h>
  44 #include <iksemel.h>
  45 #include <pthread.h>
  46
  47 #include "asterisk/lock.h"
  48 #include "asterisk/channel.h"
  49 #include "asterisk/config.h"
  50 #include "asterisk/module.h"
  51 #include "asterisk/pbx.h"
  52 #include "asterisk/sched.h"
  53 #include "asterisk/io.h"
  54 #include "asterisk/rtp.h"
  55 #include "asterisk/acl.h"
  56 #include "asterisk/callerid.h"
  57 #include "asterisk/file.h"
  58 #include "asterisk/cli.h"
  59 #include "asterisk/app.h"
  60 #include "asterisk/musiconhold.h"
  61 #include "asterisk/manager.h"
  62 #include "asterisk/stringfields.h"
  63 #include "asterisk/utils.h"
  64 #include "asterisk/causes.h"
  65 #include "asterisk/astobj.h"
  66 #include "asterisk/abstract_jb.h"
  67 #include "asterisk/jabber.h"
  68
  69 #define GOOGLE_CONFIG "gtalk.conf"
  70
  71 #define GOOGLE_NS "http://www.google.com/session"
  72
  73
  74 /*! Global jitterbuffer configuration - by default, jb is disabled */
  75 static struct ast_jb_conf default_jbconf =
  76 {
  77         .flags = 0,
  78         .max_size = -1,
  79         .resync_threshold = -1,
  80         .impl = ""
  81 };
  82 static struct ast_jb_conf global_jbconf;
  83
  84 enum gtalk_protocol {
  85         AJI_PROTOCOL_UDP = 1,
  86         AJI_PROTOCOL_SSLTCP = 2,
  87 };
  88
  89 enum gtalk_connect_type {
  90         AJI_CONNECT_STUN = 1,
  91         AJI_CONNECT_LOCAL = 2,
  92         AJI_CONNECT_RELAY = 3,
  93 };
  94
  95 struct gtalk_pvt {
  96         ast_mutex_t lock;                /*!< Channel private lock */
  97         time_t laststun;
  98         struct gtalk *parent;            /*!< Parent client */
  99         char sid[100];
 100         char us[AJI_MAX_JIDLEN];
 101         char them[AJI_MAX_JIDLEN];
 102         char ring[10];                   /*!< Message ID of ring */
 103         iksrule *ringrule;               /*!< Rule for matching RING request */
 104         int initiator;                   /*!< If we're the initiator */
 105         int alreadygone;
 106         int capability;
 107         struct ast_codec_pref prefs;
 108         struct gtalk_candidate *theircandidates;
 109         struct gtalk_candidate *ourcandidates;
 110         char cid_num[80];                /*!< Caller ID num */
 111         char cid_name[80];               /*!< Caller ID name */
 112         char exten[80];                  /*!< Called extension */
 113         struct ast_channel *owner;       /*!< Master Channel */
 114         struct ast_rtp *rtp;             /*!< RTP audio session */
 115         struct ast_rtp *vrtp;            /*!< RTP video session */
 116         int jointcapability;             /*!< Supported capability at both ends (codecs ) */
 117         int peercapability;
 118         struct gtalk_pvt *next; /* Next entity */
 119 };
 120
 121 struct gtalk_candidate {
 122         char name[100];
 123         enum gtalk_protocol protocol;
 124         double preference;
 125         char username[100];
 126         char password[100];
 127         enum gtalk_connect_type type;
 128         char network[6];
 129         int generation;
 130         char ip[16];
 131         int port;
 132         int receipt;
 133         struct gtalk_candidate *next;
 134 };
 135
 136 struct gtalk {
 137         ASTOBJ_COMPONENTS(struct gtalk);
 138         struct aji_client *connection;
 139         struct aji_buddy *buddy;
 140         struct gtalk_pvt *p;
 141         struct ast_codec_pref prefs;
 142         int amaflags;                   /*!< AMA Flags */
 143         char user[AJI_MAX_JIDLEN];
 144         char context[AST_MAX_CONTEXT];
 145         char accountcode[AST_MAX_ACCOUNT_CODE]; /*!< Account code */
 146         int capability;
 147         ast_group_t callgroup;  /*!< Call group */
 148         ast_group_t pickupgroup;        /*!< Pickup group */
 149         int callingpres;                /*!< Calling presentation */
 150         int allowguest;
 151         char language[MAX_LANGUAGE];    /*!<  Default language for prompts */
 152         char musicclass[MAX_MUSICCLASS];        /*!<  Music on Hold class */
 153 };
 154
 155 struct gtalk_container {
 156         ASTOBJ_CONTAINER_COMPONENTS(struct gtalk);
 157 };
 158
 159 static const char desc[] = "Gtalk Channel";
 160
 161 static int global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263;
 162
 163 AST_MUTEX_DEFINE_STATIC(gtalklock); /*!< Protect the interface list (of gtalk_pvt's) */
 164
 165 /* Forward declarations */
 166 static struct ast_channel *gtalk_request(const char *type, int format, void *data, int *cause);
 167 static int gtalk_digit(struct ast_channel *ast, char digit, unsigned int duration);
 168 static int gtalk_digit_begin(struct ast_channel *ast, char digit);
 169 static int gtalk_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
 170 static int gtalk_call(struct ast_channel *ast, char *dest, int timeout);
 171 static int gtalk_hangup(struct ast_channel *ast);
 172 static int gtalk_answer(struct ast_channel *ast);
 173 static int gtalk_newcall(struct gtalk *client, ikspak *pak);
 174 static struct ast_frame *gtalk_read(struct ast_channel *ast);
 175 static int gtalk_write(struct ast_channel *ast, struct ast_frame *f);
 176 static int gtalk_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen);
 177 static int gtalk_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
 178 static int gtalk_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen);
 179 static struct gtalk_pvt *gtalk_alloc(struct gtalk *client, const char *us, const char *them, const char *sid);
 180 static char *gtalk_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
 181 static char *gtalk_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
 182 /*----- RTP interface functions */
 183 static int gtalk_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp,
 184                                                            struct ast_rtp *vrtp, struct ast_rtp *trtp, int codecs, int nat_active);
 185 static enum ast_rtp_get_result gtalk_get_rtp_peer(struct ast_channel *chan, struct ast_rtp **rtp);
 186 static int gtalk_get_codec(struct ast_channel *chan);
 187
 188 /*! \brief PBX interface structure for channel registration */
 189 static const struct ast_channel_tech gtalk_tech = {
 190         .type = "Gtalk",
 191         .description = "Gtalk Channel Driver",
 192         .capabilities = AST_FORMAT_AUDIO_MASK,
 193         .requester = gtalk_request,
 194         .send_digit_begin = gtalk_digit_begin,
 195         .send_digit_end = gtalk_digit_end,
 196         .bridge = ast_rtp_bridge,
 197         .call = gtalk_call,
 198         .hangup = gtalk_hangup,
 199         .answer = gtalk_answer,
 200         .read = gtalk_read,
 201         .write = gtalk_write,
 202         .exception = gtalk_read,
 203         .indicate = gtalk_indicate,
 204         .fixup = gtalk_fixup,
 205         .send_html = gtalk_sendhtml,
 206         .properties = AST_CHAN_TP_WANTSJITTER | AST_CHAN_TP_CREATESJITTER
 207 };
 208
 209 static struct sockaddr_in bindaddr = { 0, };    /*!< The address we bind to */
 210
 211 static struct sched_context *sched;     /*!< The scheduling context */
 212 static struct io_context *io;   /*!< The IO context */
 213 static struct in_addr __ourip;
 214
 215 /*! \brief RTP driver interface */
 216 static struct ast_rtp_protocol gtalk_rtp = {
 217         type: "Gtalk",
 218         get_rtp_info: gtalk_get_rtp_peer,
 219         set_rtp_peer: gtalk_set_rtp_peer,
 220         get_codec: gtalk_get_codec,
 221 };
 222
 223 static struct ast_cli_entry gtalk_cli[] = {
 224         AST_CLI_DEFINE(gtalk_do_reload, "Reload GoogleTalk configuration"),
 225         AST_CLI_DEFINE(gtalk_show_channels, "Show GoogleTalk channels"),
 226 };
 227
 228 static char externip[16];
 229
 230 static struct gtalk_container gtalk_list;
 231
 232 static void gtalk_member_destroy(struct gtalk *obj)
 233 {
 234         ast_free(obj);
 235 }
 236
 237 static struct gtalk *find_gtalk(char *name, char *connection)
 238 {
 239         struct gtalk *gtalk = NULL;
 240         char *domain = NULL , *s = NULL;
 241
 242         if (strchr(connection, '@')) {
 243                 s = ast_strdupa(connection);
 244                 domain = strsep(&s, "@");
 245                 ast_verbose("OOOOH domain = %s\n", domain);
 246         }
 247         gtalk = ASTOBJ_CONTAINER_FIND(&gtalk_list, name);
 248         if (!gtalk && strchr(name, '@'))
 249                 gtalk = ASTOBJ_CONTAINER_FIND_FULL(&gtalk_list, name, user,,, strcasecmp);
 250
 251         if (!gtalk) {                           /* guest call */
 252                 ASTOBJ_CONTAINER_TRAVERSE(&gtalk_list, 1, {
 253                         ASTOBJ_RDLOCK(iterator);
 254                         if (!strcasecmp(iterator->name, "guest")) {
 255                                 if (!strcasecmp(iterator->connection->jid->partial, connection)) {
 256                                         gtalk = iterator;
 257                                 } else if (!strcasecmp(iterator->connection->name, connection)) {
 258                                         gtalk = iterator;
 259                                 } else if (iterator->connection->component && !strcasecmp(iterator->connection->user,domain)) {
 260                                         gtalk = iterator;
 261                                 }
 262                         }
 263                         ASTOBJ_UNLOCK(iterator);
 264
 265                         if (gtalk)
 266                                 break;
 267                 });
 268
 269         }
 270         return gtalk;
 271 }
 272
 273
 274 static int add_codec_to_answer(const struct gtalk_pvt *p, int codec, iks *dcodecs)
 275 {
 276         char *format = ast_getformatname(codec);
 277
 278         if (!strcasecmp("ulaw", format)) {
 279                 iks *payload_eg711u, *payload_pcmu;
 280                 payload_pcmu = iks_new("payload-type");
 281                 payload_eg711u = iks_new("payload-type");
 282
 283                 if(!payload_eg711u || !payload_pcmu) {
 284                         if(payload_pcmu)
 285                                 iks_delete(payload_pcmu);
 286                         if(payload_eg711u)
 287                                 iks_delete(payload_eg711u);
 288                         ast_log(LOG_WARNING,"Failed to allocate iks node");
 289                         return -1;
 290                 }
 291                 iks_insert_attrib(payload_pcmu, "id", "0");
 292                 iks_insert_attrib(payload_pcmu, "name", "PCMU");
 293                 iks_insert_attrib(payload_pcmu, "clockrate","8000");
 294                 iks_insert_attrib(payload_pcmu, "bitrate","64000");
 295                 iks_insert_attrib(payload_eg711u, "id", "100");
 296                 iks_insert_attrib(payload_eg711u, "name", "EG711U");
 297                 iks_insert_attrib(payload_eg711u, "clockrate","8000");
 298                 iks_insert_attrib(payload_eg711u, "bitrate","64000");
 299                 iks_insert_node(dcodecs, payload_pcmu);
 300                 iks_insert_node(dcodecs, payload_eg711u);
 301         }
 302         if (!strcasecmp("alaw", format)) {
 303                 iks *payload_eg711a, *payload_pcma;
 304                 payload_pcma = iks_new("payload-type");
 305                 payload_eg711a = iks_new("payload-type");
 306                 if(!payload_eg711a || !payload_pcma) {
 307                         if(payload_eg711a)
 308                                 iks_delete(payload_eg711a);
 309                         if(payload_pcma)
 310                                 iks_delete(payload_pcma);
 311                         ast_log(LOG_WARNING,"Failed to allocate iks node");
 312                         return -1;
 313                 }
 314                 iks_insert_attrib(payload_pcma, "id", "8");
 315                 iks_insert_attrib(payload_pcma, "name", "PCMA");
 316                 iks_insert_attrib(payload_pcma, "clockrate","8000");
 317                 iks_insert_attrib(payload_pcma, "bitrate","64000");
 318                 payload_eg711a = iks_new("payload-type");
 319                 iks_insert_attrib(payload_eg711a, "id", "101");
 320                 iks_insert_attrib(payload_eg711a, "name", "EG711A");
 321                 iks_insert_attrib(payload_eg711a, "clockrate","8000");
 322                 iks_insert_attrib(payload_eg711a, "bitrate","64000");
 323                 iks_insert_node(dcodecs, payload_pcma);
 324                 iks_insert_node(dcodecs, payload_eg711a);
 325         }
 326         if (!strcasecmp("ilbc", format)) {
 327                 iks *payload_ilbc = iks_new("payload-type");
 328                 if(!payload_ilbc) {
 329                         ast_log(LOG_WARNING,"Failed to allocate iks node");
 330                         return -1;
 331                 }
 332                 iks_insert_attrib(payload_ilbc, "id", "97");
 333                 iks_insert_attrib(payload_ilbc, "name", "iLBC");
 334                 iks_insert_attrib(payload_ilbc, "clockrate","8000");
 335                 iks_insert_attrib(payload_ilbc, "bitrate","13300");
 336                 iks_insert_node(dcodecs, payload_ilbc);
 337         }
 338         if (!strcasecmp("g723", format)) {
 339                 iks *payload_g723 = iks_new("payload-type");
 340                 if(!payload_g723) {
 341                         ast_log(LOG_WARNING,"Failed to allocate iks node");
 342                         return -1;
 343                 }
 344                 iks_insert_attrib(payload_g723, "id", "4");
 345                 iks_insert_attrib(payload_g723, "name", "G723");
 346                 iks_insert_attrib(payload_g723, "clockrate","8000");
 347                 iks_insert_attrib(payload_g723, "bitrate","6300");
 348                 iks_insert_node(dcodecs, payload_g723);
 349         }
 350         if (!strcasecmp("speex", format)) {
 351                 iks *payload_speex = iks_new("payload-type");
 352                 if(!payload_speex) {
 353                         ast_log(LOG_WARNING,"Failed to allocate iks node");
 354                         return -1;
 355                 }
 356                 iks_insert_attrib(payload_speex, "id", "110");
 357                 iks_insert_attrib(payload_speex, "name", "speex");
 358                 iks_insert_attrib(payload_speex, "clockrate","8000");
 359                 iks_insert_attrib(payload_speex, "bitrate","11000");
 360                 iks_insert_node(dcodecs, payload_speex);
 361         }
 362         ast_rtp_lookup_code(p->rtp, 1, codec);
 363         return 0;
 364 }
 365
 366 static int gtalk_invite(struct gtalk_pvt *p, char *to, char *from, char *sid, int initiator)
 367 {
 368         struct gtalk *client = p->parent;
 369         iks *iq, *gtalk, *dcodecs, *payload_telephone, *transport;
 370         int x;
 371         int pref_codec = 0;
 372         int alreadysent = 0;
 373
 374
 375         iq = iks_new("iq");
 376         gtalk = iks_new("session");
 377         dcodecs = iks_new("description");
 378         transport = iks_new("transport");
 379         payload_telephone = iks_new("payload-type");
 380         if (!(iq && gtalk && dcodecs && transport && payload_telephone)){
 381                 if(iq)
 382                         iks_delete(iq);
 383                 if(gtalk)
 384                         iks_delete(gtalk);
 385                 if(dcodecs)
 386                         iks_delete(dcodecs);
 387                 if(transport)
 388                         iks_delete(transport);
 389                 if(payload_telephone)
 390                         iks_delete(payload_telephone);
 391
 392                 ast_log(LOG_ERROR, "Could not allocate iksemel nodes\n");
 393                 return 0;
 394         }
 395         iks_insert_attrib(dcodecs, "xmlns", "http://www.google.com/session/phone");
 396         iks_insert_attrib(dcodecs, "xml:lang", "en");
 397
 398         for (x = 0; x < 32; x++) {
 399                 if (!(pref_codec = ast_codec_pref_index(&client->prefs, x)))
 400                         break;
 401                 if (!(client->capability & pref_codec))
 402                         continue;
 403                 if (alreadysent & pref_codec)
 404                         continue;
 405                 add_codec_to_answer(p, pref_codec, dcodecs);
 406                 alreadysent |= pref_codec;
 407         }
 408
 409         iks_insert_attrib(payload_telephone, "id", "106");
 410         iks_insert_attrib(payload_telephone, "name", "telephone-event");
 411         iks_insert_attrib(payload_telephone, "clockrate", "8000");
 412
 413         iks_insert_attrib(transport,"xmlns","http://www.google.com/transport/p2p");
 414
 415         iks_insert_attrib(iq, "type", "set");
 416         iks_insert_attrib(iq, "to", to);
 417         iks_insert_attrib(iq, "from", from);
 418         iks_insert_attrib(iq, "id", client->connection->mid);
 419         ast_aji_increment_mid(client->connection->mid);
 420
 421         iks_insert_attrib(gtalk, "xmlns", "http://www.google.com/session");
 422         iks_insert_attrib(gtalk, "type",initiator ? "initiate": "accept");
 423         iks_insert_attrib(gtalk, "initiator", initiator ? from : to);
 424         iks_insert_attrib(gtalk, "id", sid);
 425         iks_insert_node(iq, gtalk);
 426         iks_insert_node(gtalk, dcodecs);
 427         iks_insert_node(gtalk, transport);
 428         iks_insert_node(dcodecs, payload_telephone);
 429
 430         ast_aji_send(client->connection, iq);
 431         iks_delete(payload_telephone);
 432         iks_delete(transport);
 433         iks_delete(dcodecs);
 434         iks_delete(gtalk);
 435         iks_delete(iq);
 436         return 1;
 437 }
 438
 439 static int gtalk_invite_response(struct gtalk_pvt *p, char *to , char *from, char *sid, int initiator)
 440 {
 441         iks *iq, *session, *transport;
 442         iq = iks_new("iq");
 443         session = iks_new("session");
 444         transport = iks_new("transport");
 445         if(!(iq && session && transport)) {
 446                 if(iq)
 447                         iks_delete(iq);
 448                 if(session)
 449                         iks_delete(session);
 450                 if(transport)
 451                         iks_delete(transport);
 452                 ast_log(LOG_ERROR, " Unable to allocate IKS node\n");
 453                 return -1;
 454         }
 455         iks_insert_attrib(iq, "from", from);
 456         iks_insert_attrib(iq, "to", to);
 457         iks_insert_attrib(iq, "type", "set");
 458         iks_insert_attrib(iq, "id",p->parent->connection->mid);
 459         ast_aji_increment_mid(p->parent->connection->mid);
 460         iks_insert_attrib(session, "type", "transport-accept");
 461         iks_insert_attrib(session, "id", sid);
 462         iks_insert_attrib(session, "initiator", initiator ? from : to);
 463         iks_insert_attrib(session, "xmlns", "http://www.google.com/session");
 464         iks_insert_attrib(transport, "xmlns", "http://www.google.com/transport/p2p");
 465         iks_insert_node(iq,session);
 466         iks_insert_node(session,transport);
 467         ast_aji_send(p->parent->connection, iq);
 468         iks_delete(transport);
 469         iks_delete(session);
 470         iks_delete(iq);
 471         return 1;
 472
 473 }
 474
 475 static int gtalk_ringing_ack(void *data, ikspak *pak)
 476 {
 477         struct gtalk_pvt *p = data;
 478
 479         if (p->ringrule)
 480                 iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
 481         p->ringrule = NULL;
 482         if (p->owner)
 483                 ast_queue_control(p->owner, AST_CONTROL_RINGING);
 484         return IKS_FILTER_EAT;
 485 }
 486
 487 static int gtalk_answer(struct ast_channel *ast)
 488 {
 489         struct gtalk_pvt *p = ast->tech_pvt;
 490         int res = 0;
 491
 492         ast_debug(1, "Answer!\n");
 493         ast_mutex_lock(&p->lock);
 494         gtalk_invite(p, p->them, p->us,p->sid, 0);
 495         manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate", "Channel: %s\r\nChanneltype: %s\r\nGtalk-SID: %s\r\n",
 496                 ast->name, "GTALK", p->sid);
 497         ast_mutex_unlock(&p->lock);
 498         return res;
 499 }
 500
 501 static enum ast_rtp_get_result gtalk_get_rtp_peer(struct ast_channel *chan, struct ast_rtp **rtp)
 502 {
 503         struct gtalk_pvt *p = chan->tech_pvt;
 504         enum ast_rtp_get_result res = AST_RTP_GET_FAILED;
 505
 506         if (!p)
 507                 return res;
 508
 509         ast_mutex_lock(&p->lock);
 510         if (p->rtp){
 511                 *rtp = p->rtp;
 512                 res = AST_RTP_TRY_PARTIAL;
 513         }
 514         ast_mutex_unlock(&p->lock);
 515
 516         return res;
 517 }
 518
 519 static int gtalk_get_codec(struct ast_channel *chan)
 520 {
 521         struct gtalk_pvt *p = chan->tech_pvt;
 522         return p->peercapability;
 523 }
 524
 525 static int gtalk_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp, struct ast_rtp *vrtp, struct ast_rtp *trtp, int codecs, int nat_active)
 526 {
 527         struct gtalk_pvt *p;
 528
 529         p = chan->tech_pvt;
 530         if (!p)
 531                 return -1;
 532         ast_mutex_lock(&p->lock);
 533
 534 /*      if (rtp)
 535                 ast_rtp_get_peer(rtp, &p->redirip);
 536         else
 537                 memset(&p->redirip, 0, sizeof(p->redirip));
 538         p->redircodecs = codecs; */
 539
 540         /* Reset lastrtprx timer */
 541         ast_mutex_unlock(&p->lock);
 542         return 0;
 543 }
 544
 545 static int gtalk_response(struct gtalk *client, char *from, ikspak *pak, const char *reasonstr, const char *reasonstr2)
 546 {
 547         iks *response = NULL, *error = NULL, *reason = NULL;
 548         int res = -1;
 549
 550         response = iks_new("iq");
 551         if (response) {
 552                 iks_insert_attrib(response, "type", "result");
 553                 iks_insert_attrib(response, "from", from);
 554                 iks_insert_attrib(response, "to", iks_find_attrib(pak->x, "from"));
 555                 iks_insert_attrib(response, "id", iks_find_attrib(pak->x, "id"));
 556                 if (reasonstr) {
 557                         error = iks_new("error");
 558                         if (error) {
 559                                 iks_insert_attrib(error, "type", "cancel");
 560                                 reason = iks_new(reasonstr);
 561                                 if (reason)
 562                                         iks_insert_node(error, reason);
 563                                 iks_insert_node(response, error);
 564                         }
 565                 }
 566                 ast_aji_send(client->connection, response);
 567                 if (reason)
 568                         iks_delete(reason);
 569                 if (error)
 570                         iks_delete(error);
 571                 iks_delete(response);
 572                 res = 0;
 573         }
 574         return res;
 575 }
 576
 577 static int gtalk_is_answered(struct gtalk *client, ikspak *pak)
 578 {
 579         struct gtalk_pvt *tmp;
 580         char *from;
 581         ast_debug(1, "The client is %s\n", client->name);
 582         /* Make sure our new call doesn't exist yet */
 583         for (tmp = client->p; tmp; tmp = tmp->next) {
 584                 if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid))
 585                         break;
 586         }
 587
 588         from = iks_find_attrib(pak->x, "to");
 589         if(!from)
 590                 from = client->connection->jid->full;
 591
 592         if (tmp) {
 593                 if (tmp->owner)
 594                         ast_queue_control(tmp->owner, AST_CONTROL_ANSWER);
 595         } else
 596                 ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
 597         gtalk_response(client, from, pak, NULL, NULL);
 598         return 1;
 599 }
 600
 601 static int gtalk_is_accepted(struct gtalk *client, ikspak *pak)
 602 {
 603         struct gtalk_pvt *tmp;
 604         char *from;
 605
 606         ast_log(LOG_DEBUG, "The client is %s\n", client->name);
 607         /* find corresponding call */
 608         for (tmp = client->p; tmp; tmp = tmp->next) {
 609                 if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid))
 610                         break;
 611         }
 612
 613         from = iks_find_attrib(pak->x, "to");
 614         if(!from)
 615                 from = client->connection->jid->full;
 616
 617         if (!tmp)
 618                 ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
 619
 620         /* answer 'iq' packet to let the remote peer know that we're alive */
 621         gtalk_response(client, from, pak, NULL, NULL);
 622         return 1;
 623 }
 624
 625 static int gtalk_handle_dtmf(struct gtalk *client, ikspak *pak)
 626 {
 627         struct gtalk_pvt *tmp;
 628         iks *dtmfnode = NULL, *dtmfchild = NULL;
 629         char *dtmf;
 630         char *from;
 631         /* Make sure our new call doesn't exist yet */
 632         for (tmp = client->p; tmp; tmp = tmp->next) {
 633                 if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid) || iks_find_with_attrib(pak->x, "gtalk", "sid", tmp->sid))
 634                         break;
 635         }
 636         from = iks_find_attrib(pak->x, "to");
 637         if(!from)
 638                 from = client->connection->jid->full;
 639
 640
 641         if (tmp) {
 642                 if(iks_find_with_attrib(pak->x, "dtmf-method", "method", "rtp")) {
 643                         gtalk_response(client, from, pak,
 644                                         "feature-not-implemented xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'",
 645                                         "unsupported-dtmf-method xmlns='http://jabber.org/protocol/gtalk/info/dtmf#errors'");
 646                         return -1;
 647                 }
 648                 if ((dtmfnode = iks_find(pak->x, "dtmf"))) {
 649                         if((dtmf = iks_find_attrib(dtmfnode, "code"))) {
 650                                 if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-up")) {
 651                                         struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
 652                                         f.subclass = dtmf[0];
 653                                         ast_queue_frame(tmp->owner, &f);
 654                                         ast_verbose("GOOGLE! DTMF-relay event received: %c\n", f.subclass);
 655                                 } else if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-down")) {
 656                                         struct ast_frame f = {AST_FRAME_DTMF_END, };
 657                                         f.subclass = dtmf[0];
 658                                         ast_queue_frame(tmp->owner, &f);
 659                                         ast_verbose("GOOGLE! DTMF-relay event received: %c\n", f.subclass);
 660                                 } else if(iks_find_attrib(pak->x, "dtmf")) { /* 250 millasecond default */
 661                                         struct ast_frame f = {AST_FRAME_DTMF, };
 662                                         f.subclass = dtmf[0];
 663                                         ast_queue_frame(tmp->owner, &f);
 664                                         ast_verbose("GOOGLE! DTMF-relay event received: %c\n", f.subclass);
 665                                 }
 666                         }
 667                 } else if ((dtmfnode = iks_find_with_attrib(pak->x, "gtalk", "action", "session-info"))) {
 668                         if((dtmfchild = iks_find(dtmfnode, "dtmf"))) {
 669                                 if((dtmf = iks_find_attrib(dtmfchild, "code"))) {
 670                                         if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-up")) {
 671                                                 struct ast_frame f = {AST_FRAME_DTMF_END, };
 672                                                 f.subclass = dtmf[0];
 673                                                 ast_queue_frame(tmp->owner, &f);
 674                                                 ast_verbose("GOOGLE! DTMF-relay event received: %c\n", f.subclass);
 675                                         } else if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-down")) {
 676                                                 struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
 677                                                 f.subclass = dtmf[0];
 678                                                 ast_queue_frame(tmp->owner, &f);
 679                                                 ast_verbose("GOOGLE! DTMF-relay event received: %c\n", f.subclass);
 680                                         }
 681                                 }
 682                         }
 683                 }
 684                 gtalk_response(client, from, pak, NULL, NULL);
 685                 return 1;
 686         } else
 687                 ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
 688
 689         gtalk_response(client, from, pak, NULL, NULL);
 690         return 1;
 691 }
 692
 693 static int gtalk_hangup_farend(struct gtalk *client, ikspak *pak)
 694 {
 695         struct gtalk_pvt *tmp;
 696         char *from;
 697
 698         ast_debug(1, "The client is %s\n", client->name);
 699         /* Make sure our new call doesn't exist yet */
 700         for (tmp = client->p; tmp; tmp = tmp->next) {
 701                 if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid))
 702                         break;
 703         }
 704         from = iks_find_attrib(pak->x, "to");
 705         if(!from)
 706                 from = client->connection->jid->full;
 707
 708         if (tmp) {
 709                 tmp->alreadygone = 1;
 710                 if (tmp->owner)
 711                         ast_queue_hangup(tmp->owner);
 712         } else
 713                 ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
 714         gtalk_response(client, from, pak, NULL, NULL);
 715         return 1;
 716 }
 717
 718 static int gtalk_create_candidates(struct gtalk *client, struct gtalk_pvt *p, char *sid, char *from, char *to)
 719 {
 720         struct gtalk_candidate *tmp;
 721         struct aji_client *c = client->connection;
 722         struct gtalk_candidate *ours1 = NULL, *ours2 = NULL;
 723         struct sockaddr_in sin;
 724         struct sockaddr_in dest;
 725         struct in_addr us;
 726         iks *iq, *gtalk, *candidate, *transport;
 727         char user[17], pass[17], preference[5], port[7];
 728
 729
 730         iq = iks_new("iq");
 731         gtalk = iks_new("session");
 732         candidate = iks_new("candidate");
 733         transport = iks_new("transport");
 734         if (!iq || !gtalk || !candidate || !transport) {
 735                 ast_log(LOG_ERROR, "Memory allocation error\n");
 736                 goto safeout;
 737         }
 738         ours1 = ast_calloc(1, sizeof(*ours1));
 739         ours2 = ast_calloc(1, sizeof(*ours2));
 740         if (!ours1 || !ours2)
 741                 goto safeout;
 742
 743         iks_insert_attrib(transport, "xmlns","http://www.google.com/transport/p2p");
 744         iks_insert_node(iq, gtalk);
 745         iks_insert_node(gtalk,transport);
 746         iks_insert_node(transport, candidate);
 747
 748         for (; p; p = p->next) {
 749                 if (!strcasecmp(p->sid, sid))
 750                         break;
 751         }
 752
 753         if (!p) {
 754                 ast_log(LOG_NOTICE, "No matching gtalk session - SID %s!\n", sid);
 755                 goto safeout;
 756         }
 757
 758         ast_rtp_get_us(p->rtp, &sin);
 759         ast_find_ourip(&us, bindaddr);
 760
 761         /* Setup our gtalk candidates */
 762         ast_copy_string(ours1->name, "rtp", sizeof(ours1->name));
 763         ours1->port = ntohs(sin.sin_port);
 764         ours1->preference = 1;
 765         snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random());
 766         snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random());
 767         ast_copy_string(ours1->username, user, sizeof(ours1->username));
 768         ast_copy_string(ours1->password, pass, sizeof(ours1->password));
 769         ast_copy_string(ours1->ip, ast_inet_ntoa(us), sizeof(ours1->ip));
 770         ours1->protocol = AJI_PROTOCOL_UDP;
 771         ours1->type = AJI_CONNECT_LOCAL;
 772         ours1->generation = 0;
 773         p->ourcandidates = ours1;
 774
 775         if (!ast_strlen_zero(externip)) {
 776                 /* XXX We should really stun for this one not just go with externip XXX */
 777                 snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random());
 778                 snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random());
 779                 ast_copy_string(ours2->username, user, sizeof(ours2->username));
 780                 ast_copy_string(ours2->password, pass, sizeof(ours2->password));
 781                 ast_copy_string(ours2->ip, externip, sizeof(ours2->ip));
 782                 ast_copy_string(ours2->name, "rtp", sizeof(ours1->name));
 783                 ours2->port = ntohs(sin.sin_port);
 784                 ours2->preference = 0.9;
 785                 ours2->protocol = AJI_PROTOCOL_UDP;
 786                 ours2->type = AJI_CONNECT_STUN;
 787                 ours2->generation = 0;
 788                 ours1->next = ours2;
 789                 ours2 = NULL;
 790         }
 791         ours1 = NULL;
 792         dest.sin_addr = __ourip;
 793         dest.sin_port = sin.sin_port;
 794
 795
 796         for (tmp = p->ourcandidates; tmp; tmp = tmp->next) {
 797                 snprintf(port, sizeof(port), "%d", tmp->port);
 798                 snprintf(preference, sizeof(preference), "%.2f", tmp->preference);
 799                 iks_insert_attrib(iq, "from", to);
 800                 iks_insert_attrib(iq, "to", from);
 801                 iks_insert_attrib(iq, "type", "set");
 802                 iks_insert_attrib(iq, "id", c->mid);
 803                 ast_aji_increment_mid(c->mid);
 804                 iks_insert_attrib(gtalk, "type", "transport-info");
 805                 iks_insert_attrib(gtalk, "id", sid);
 806                 iks_insert_attrib(gtalk, "initiator", (p->initiator) ? to : from);
 807                 iks_insert_attrib(gtalk, "xmlns", GOOGLE_NS);
 808                 iks_insert_attrib(candidate, "name", tmp->name);
 809                 iks_insert_attrib(candidate, "address", tmp->ip);
 810                 iks_insert_attrib(candidate, "port", port);
 811                 iks_insert_attrib(candidate, "username", tmp->username);
 812                 iks_insert_attrib(candidate, "password", tmp->password);
 813                 iks_insert_attrib(candidate, "preference", preference);
 814                 if (tmp->protocol == AJI_PROTOCOL_UDP)
 815                         iks_insert_attrib(candidate, "protocol", "udp");
 816                 if (tmp->protocol == AJI_PROTOCOL_SSLTCP)
 817                         iks_insert_attrib(candidate, "protocol", "ssltcp");
 818                 if (tmp->type == AJI_CONNECT_STUN)
 819                         iks_insert_attrib(candidate, "type", "stun");
 820                 if (tmp->type == AJI_CONNECT_LOCAL)
 821                         iks_insert_attrib(candidate, "type", "local");
 822                 if (tmp->type == AJI_CONNECT_RELAY)
 823                         iks_insert_attrib(candidate, "type", "relay");
 824                 iks_insert_attrib(candidate, "network", "0");
 825                 iks_insert_attrib(candidate, "generation", "0");
 826                 ast_aji_send(c, iq);
 827         }
 828         p->laststun = 0;
 829
 830 safeout:
 831         if (ours1)
 832                 ast_free(ours1);
 833         if (ours2)
 834                 ast_free(ours2);
 835         if (iq)
 836                 iks_delete(iq);
 837         if (gtalk)
 838                 iks_delete(gtalk);
 839         if (candidate)
 840                 iks_delete(candidate);
 841         if(transport)
 842                 iks_delete(transport);
 843         return 1;
 844 }
 845
 846 static struct gtalk_pvt *gtalk_alloc(struct gtalk *client, const char *us, const char *them, const char *sid)
 847 {
 848         struct gtalk_pvt *tmp = NULL;
 849         struct aji_resource *resources = NULL;
 850         struct aji_buddy *buddy;
 851         char idroster[200];
 852         char *data, *exten = NULL;
 853
 854         ast_debug(1, "The client is %s for alloc\n", client->name);
 855         if (!sid && !strchr(them, '/')) {       /* I started call! */
 856                 if (!strcasecmp(client->name, "guest")) {
 857                         buddy = ASTOBJ_CONTAINER_FIND(&client->connection->buddies, them);
 858                         if (buddy)
 859                                 resources = buddy->resources;
 860                 } else if (client->buddy)
 861                         resources = client->buddy->resources;
 862                 while (resources) {
 863                         if (resources->cap->jingle) {
 864                                 break;
 865                         }
 866                         resources = resources->next;
 867                 }
 868                 if (resources)
 869                         snprintf(idroster, sizeof(idroster), "%s/%s", them, resources->resource);
 870                 else {
 871                         ast_log(LOG_ERROR, "no gtalk capable clients to talk to.\n");
 872                         return NULL;
 873                 }
 874         }
 875         if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
 876                 return NULL;
 877         }
 878
 879         memcpy(&tmp->prefs, &client->prefs, sizeof(struct ast_codec_pref));
 880
 881         if (sid) {
 882                 ast_copy_string(tmp->sid, sid, sizeof(tmp->sid));
 883                 ast_copy_string(tmp->them, them, sizeof(tmp->them));
 884                 ast_copy_string(tmp->us, us, sizeof(tmp->us));
 885         } else {
 886                 snprintf(tmp->sid, sizeof(tmp->sid), "%08lx%08lx", ast_random(), ast_random());
 887                 ast_copy_string(tmp->them, idroster, sizeof(tmp->them));
 888                 ast_copy_string(tmp->us, us, sizeof(tmp->us));
 889                 tmp->initiator = 1;
 890         }
 891         tmp->rtp = ast_rtp_new_with_bindaddr(sched, io, 1, 0, bindaddr.sin_addr);
 892         tmp->parent = client;
 893         if (!tmp->rtp) {
 894                 ast_log(LOG_WARNING, "Out of RTP sessions?\n");
 895                 ast_free(tmp);
 896                 return NULL;
 897         }
 898
 899         if(strchr(tmp->us, '/')) {
 900                 data = ast_strdupa(tmp->us);
 901                 exten = strsep(&data, "/");
 902         } else
 903                 exten = tmp->us;
 904         ast_copy_string(tmp->exten,  exten, sizeof(tmp->exten));
 905         ast_mutex_init(&tmp->lock);
 906         ast_mutex_lock(&gtalklock);
 907         tmp->next = client->p;
 908         client->p = tmp;
 909         ast_mutex_unlock(&gtalklock);
 910         return tmp;
 911 }
 912
 913 /*! \brief Start new gtalk channel */
 914 static struct ast_channel *gtalk_new(struct gtalk *client, struct gtalk_pvt *i, int state, const char *title)
 915 {
 916         struct ast_channel *tmp;
 917         int fmt;
 918         int what;
 919         const char *n2;
 920         char *data = NULL, *cid = NULL;
 921
 922         if (title)
 923                 n2 = title;
 924         else
 925                 n2 = i->us;
 926         tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, client->accountcode, i->exten, client->context, client->amaflags, "Gtalk/%s-%04lx", n2, ast_random() & 0xffff);
 927         if (!tmp) {
 928                 ast_log(LOG_WARNING, "Unable to allocate Gtalk channel structure!\n");
 929                 return NULL;
 930         }
 931         tmp->tech = &gtalk_tech;
 932
 933         /* Select our native format based on codec preference until we receive
 934            something from another device to the contrary. */
 935 /*      ast_verbose("XXXXXXXXXXXXX\nXXX i->jointcapability = %X\nXXX i->capability = %X\nXXX global_capability %X\n XXXXXXXXXXXX\n",i->jointcapability,i->capability,global_capability); */
 936         if (i->jointcapability)
 937                 what = i->jointcapability;
 938         else if (i->capability)
 939                 what = i->capability;
 940         else
 941                 what = global_capability;
 942
 943         /* Set Frame packetization */
 944         if (i->rtp)
 945                 ast_rtp_codec_setpref(i->rtp, &i->prefs);
 946
 947         tmp->nativeformats = ast_codec_choose(&i->prefs, what, 1) | (i->jointcapability & AST_FORMAT_VIDEO_MASK);
 948         fmt = ast_best_codec(tmp->nativeformats);
 949
 950         if (i->rtp) {
 951                 ast_rtp_setstun(i->rtp, 1);
 952                 ast_channel_set_fd(tmp, 0, ast_rtp_fd(i->rtp));
 953                 ast_channel_set_fd(tmp, 1, ast_rtcp_fd(i->rtp));
 954         }
 955         if (i->vrtp) {
 956                 ast_rtp_setstun(i->rtp, 1);
 957                 ast_channel_set_fd(tmp, 2, ast_rtp_fd(i->vrtp));
 958                 ast_channel_set_fd(tmp, 3, ast_rtcp_fd(i->vrtp));
 959         }
 960         if (state == AST_STATE_RING)
 961                 tmp->rings = 1;
 962         tmp->adsicpe = AST_ADSI_UNAVAILABLE;
 963         tmp->writeformat = fmt;
 964         tmp->rawwriteformat = fmt;
 965         tmp->readformat = fmt;
 966         tmp->rawreadformat = fmt;
 967         tmp->tech_pvt = i;
 968
 969         tmp->callgroup = client->callgroup;
 970         tmp->pickupgroup = client->pickupgroup;
 971         tmp->cid.cid_pres = client->callingpres;
 972         if (!ast_strlen_zero(client->accountcode))
 973                 ast_string_field_set(tmp, accountcode, client->accountcode);
 974         if (client->amaflags)
 975                 tmp->amaflags = client->amaflags;
 976         if (!ast_strlen_zero(client->language))
 977                 ast_string_field_set(tmp, language, client->language);
 978         if (!ast_strlen_zero(client->musicclass))
 979                 ast_string_field_set(tmp, musicclass, client->musicclass);
 980         i->owner = tmp;
 981         ast_module_ref(ast_module_info->self);
 982         ast_copy_string(tmp->context, client->context, sizeof(tmp->context));
 983         ast_copy_string(tmp->exten, i->exten, sizeof(tmp->exten));
 984         /* Don't use ast_set_callerid() here because it will
 985          * generate a needless NewCallerID event */
 986         if (!strcasecmp(client->name, "guest")) {
 987                 data = ast_strdupa(i->them);
 988                 if (strchr(data, '/')) {
 989                         cid = strsep(&data, "/");
 990                 } else
 991                         cid = data;
 992         } else {
 993                 data =  ast_strdupa(client->user);
 994                 cid = data;
 995         }
 996         cid = strsep(&cid, "@");
 997         tmp->cid.cid_ani = ast_strdup(cid);
 998         if (!ast_strlen_zero(i->exten) && strcmp(i->exten, "s"))
 999                 tmp->cid.cid_dnid = ast_strdup(i->exten);
1000         tmp->priority = 1;
1001         if (i->rtp)
1002                 ast_jb_configure(tmp, &global_jbconf);
1003         if (state != AST_STATE_DOWN && ast_pbx_start(tmp)) {
1004                 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
1005                 tmp->hangupcause = AST_CAUSE_SWITCH_CONGESTION;
1006                 ast_hangup(tmp);
1007                 tmp = NULL;
1008         } else {
1009                 manager_event(EVENT_FLAG_SYSTEM, "ChannelUpdate",
1010                         "Channel: %s\r\nChanneltype: %s\r\nGtalk-SID: %s\r\n",
1011                         i->owner ? i->owner->name : "", "Gtalk", i->sid);
1012         }
1013         return tmp;
1014 }
1015
1016 static int gtalk_action(struct gtalk *client, struct gtalk_pvt *p, const char *action)
1017 {
1018         iks *request, *session = NULL;
1019         int res = -1;
1020
1021         request = iks_new("iq");
1022         if (request) {
1023                 iks_insert_attrib(request, "type", "set");
1024                 iks_insert_attrib(request, "from", p->us);
1025                 iks_insert_attrib(request, "to", p->them);
1026                 iks_insert_attrib(request, "id", client->connection->mid);
1027                 ast_aji_increment_mid(client->connection->mid);
1028                 session = iks_new("session");
1029                 if (session) {
1030                         iks_insert_attrib(session, "type", action);
1031                         iks_insert_attrib(session, "id", p->sid);
1032                         iks_insert_attrib(session, "initiator", p->initiator ? p->us : p->them);
1033                         iks_insert_attrib(session, "xmlns", "http://www.google.com/session");
1034                         iks_insert_node(request, session);
1035                         ast_aji_send(client->connection, request);
1036                         iks_delete(session);
1037                         res = 0;
1038                 }
1039                 iks_delete(request);
1040         }
1041         return res;
1042 }
1043
1044 static void gtalk_free_candidates(struct gtalk_candidate *candidate)
1045 {
1046         struct gtalk_candidate *last;
1047         while (candidate) {
1048                 last = candidate;
1049                 candidate = candidate->next;
1050                 ast_free(last);
1051         }
1052 }
1053
1054 static void gtalk_free_pvt(struct gtalk *client, struct gtalk_pvt *p)
1055 {
1056         struct gtalk_pvt *cur, *prev = NULL;
1057         cur = client->p;
1058         while (cur) {
1059                 if (cur == p) {
1060                         if (prev)
1061                                 prev->next = p->next;
1062                         else
1063                                 client->p = p->next;
1064                         break;
1065                 }
1066                 prev = cur;
1067                 cur = cur->next;
1068         }
1069         if (p->ringrule)
1070                 iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
1071         if (p->owner)
1072                 ast_log(LOG_WARNING, "Uh oh, there's an owner, this is going to be messy.\n");
1073         if (p->rtp)
1074                 ast_rtp_destroy(p->rtp);
1075         if (p->vrtp)
1076                 ast_rtp_destroy(p->vrtp);
1077         gtalk_free_candidates(p->theircandidates);
1078         ast_free(p);
1079 }
1080
1081
1082 static int gtalk_newcall(struct gtalk *client, ikspak *pak)
1083 {
1084         struct gtalk_pvt *p, *tmp = client->p;
1085         struct ast_channel *chan;
1086         int res;
1087         iks *codec;
1088         char *from = NULL;
1089         /* Make sure our new call doesn't exist yet */
1090         from = iks_find_attrib(pak->x,"to");
1091         if(!from)
1092                 from = client->connection->jid->full;
1093
1094         while (tmp) {
1095                 if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) {
1096                         ast_log(LOG_NOTICE, "Ignoring duplicate call setup on SID %s\n", tmp->sid);
1097                         gtalk_response(client, from, pak, "out-of-order", NULL);
1098                         return -1;
1099                 }
1100                 tmp = tmp->next;
1101         }
1102
1103         p = gtalk_alloc(client, from, pak->from->full, iks_find_attrib(pak->query, "id"));
1104         if (!p) {
1105                 ast_log(LOG_WARNING, "Unable to allocate gtalk structure!\n");
1106                 return -1;
1107         }
1108         chan = gtalk_new(client, p, AST_STATE_DOWN, pak->from->user);
1109         if (chan) {
1110                 ast_mutex_lock(&p->lock);
1111                 ast_copy_string(p->them, pak->from->full, sizeof(p->them));
1112                 if (iks_find_attrib(pak->query, "id")) {
1113                         ast_copy_string(p->sid, iks_find_attrib(pak->query, "id"),
1114                                                         sizeof(p->sid));
1115                 }
1116
1117                 codec = iks_child(iks_child(iks_child(pak->x)));
1118                 while (codec) {
1119                         ast_rtp_set_m_type(p->rtp, atoi(iks_find_attrib(codec, "id")));
1120                         ast_rtp_set_rtpmap_type(p->rtp, atoi(iks_find_attrib(codec, "id")), "audio",
1121                                                 iks_find_attrib(codec, "name"), 0);
1122                         codec = iks_next(codec);
1123                 }
1124
1125                 ast_mutex_unlock(&p->lock);
1126                 ast_setstate(chan, AST_STATE_RING);
1127                 res = ast_pbx_start(chan);
1128
1129                 switch (res) {
1130                 case AST_PBX_FAILED:
1131                         ast_log(LOG_WARNING, "Failed to start PBX :(\n");
1132                         gtalk_response(client, from, pak, "service-unavailable", NULL);
1133                         break;
1134                 case AST_PBX_CALL_LIMIT:
1135                         ast_log(LOG_WARNING, "Failed to start PBX (call limit reached) \n");
1136                         gtalk_response(client, from, pak, "service-unavailable", NULL);
1137                         break;
1138                 case AST_PBX_SUCCESS:
1139                         gtalk_response(client, from, pak, NULL, NULL);
1140                         gtalk_invite_response(p, p->them, p->us,p->sid, 0);
1141                         gtalk_create_candidates(client, p, p->sid, p->them, p->us);
1142                         /* nothing to do */
1143                         break;
1144                 }
1145         } else {
1146                 gtalk_free_pvt(client, p);
1147         }
1148         return 1;
1149 }
1150
1151 static int gtalk_update_stun(struct gtalk *client, struct gtalk_pvt *p)
1152 {
1153         struct gtalk_candidate *tmp;
1154         struct hostent *hp;
1155         struct ast_hostent ahp;
1156         struct sockaddr_in sin;
1157         struct sockaddr_in aux;
1158
1159         if (time(NULL) == p->laststun)
1160                 return 0;
1161
1162         tmp = p->theircandidates;
1163         p->laststun = time(NULL);
1164         while (tmp) {
1165                 char username[256];
1166
1167                 /* Find the IP address of the host */
1168                 hp = ast_gethostbyname(tmp->ip, &ahp);
1169                 sin.sin_family = AF_INET;
1170                 memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr));
1171                 sin.sin_port = htons(tmp->port);
1172                 snprintf(username, sizeof(username), "%s%s", tmp->username,
1173                          p->ourcandidates->username);
1174
1175                 /* Find out the result of the STUN */
1176                 ast_rtp_get_peer(p->rtp, &aux);
1177
1178                 /* If the STUN result is different from the IP of the hostname,
1179                         lock on the stun IP of the hostname advertised by the
1180                         remote client */
1181                 if (aux.sin_addr.s_addr &&
1182                     aux.sin_addr.s_addr != sin.sin_addr.s_addr)
1183                         ast_rtp_stun_request(p->rtp, &aux, username);
1184                 else
1185                         ast_rtp_stun_request(p->rtp, &sin, username);
1186
1187                 if (aux.sin_addr.s_addr) {
1188                         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);
1189                         ast_debug(4, "Sending STUN request to %s\n", tmp->ip);
1190                 }
1191
1192                 tmp = tmp->next;
1193         }
1194         return 1;
1195 }
1196
1197 static int gtalk_add_candidate(struct gtalk *client, ikspak *pak)
1198 {
1199         struct gtalk_pvt *p = NULL, *tmp = NULL;
1200         struct aji_client *c = client->connection;
1201         struct gtalk_candidate *newcandidate = NULL;
1202         iks *traversenodes = NULL, *receipt = NULL;
1203         char *from;
1204
1205         from = iks_find_attrib(pak->x,"to");
1206         if(!from)
1207                 from = c->jid->full;
1208
1209         for (tmp = client->p; tmp; tmp = tmp->next) {
1210                 if (iks_find_with_attrib(pak->x, "session", "id", tmp->sid)) {
1211                         p = tmp;
1212                         break;
1213                 }
1214         }
1215
1216         if (!p)
1217                 return -1;
1218
1219         traversenodes = pak->query;
1220         while(traversenodes) {
1221                 if(!strcasecmp(iks_name(traversenodes), "session")) {
1222                         traversenodes = iks_child(traversenodes);
1223                         continue;
1224                 }
1225                 if(!strcasecmp(iks_name(traversenodes), "transport")) {
1226                         traversenodes = iks_child(traversenodes);
1227                         continue;
1228                 }
1229                 if(!strcasecmp(iks_name(traversenodes), "candidate")) {
1230                         newcandidate = ast_calloc(1, sizeof(*newcandidate));
1231                         if (!newcandidate)
1232                                 return 0;
1233                         ast_copy_string(newcandidate->name, iks_find_attrib(traversenodes, "name"),
1234                                                         sizeof(newcandidate->name));
1235                         ast_copy_string(newcandidate->ip, iks_find_attrib(traversenodes, "address"),
1236                                                         sizeof(newcandidate->ip));
1237                         newcandidate->port = atoi(iks_find_attrib(traversenodes, "port"));
1238                         ast_copy_string(newcandidate->username, iks_find_attrib(traversenodes, "username"),
1239                                                         sizeof(newcandidate->username));
1240                         ast_copy_string(newcandidate->password, iks_find_attrib(traversenodes, "password"),
1241                                                         sizeof(newcandidate->password));
1242                         newcandidate->preference = atof(iks_find_attrib(traversenodes, "preference"));
1243                         if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "udp"))
1244                                 newcandidate->protocol = AJI_PROTOCOL_UDP;
1245                         if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "ssltcp"))
1246                                 newcandidate->protocol = AJI_PROTOCOL_SSLTCP;
1247
1248                         if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "stun"))
1249                                 newcandidate->type = AJI_CONNECT_STUN;
1250                         if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "local"))
1251                                 newcandidate->type = AJI_CONNECT_LOCAL;
1252                         if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "relay"))
1253                                 newcandidate->type = AJI_CONNECT_RELAY;
1254                         ast_copy_string(newcandidate->network, iks_find_attrib(traversenodes, "network"),
1255                                                         sizeof(newcandidate->network));
1256                         newcandidate->generation = atoi(iks_find_attrib(traversenodes, "generation"));
1257                         newcandidate->next = NULL;
1258
1259                         newcandidate->next = p->theircandidates;
1260                         p->theircandidates = newcandidate;
1261                         p->laststun = 0;
1262                         gtalk_update_stun(p->parent, p);
1263                         newcandidate = NULL;
1264                 }
1265                 traversenodes = iks_next(traversenodes);
1266         }
1267
1268         receipt = iks_new("iq");
1269         iks_insert_attrib(receipt, "type", "result");
1270         iks_insert_attrib(receipt, "from", from);
1271         iks_insert_attrib(receipt, "to", iks_find_attrib(pak->x, "from"));
1272         iks_insert_attrib(receipt, "id", iks_find_attrib(pak->x, "id"));
1273         ast_aji_send(c, receipt);
1274         iks_delete(receipt);
1275
1276         return 1;
1277 }
1278
1279 static struct ast_frame *gtalk_rtp_read(struct ast_channel *ast, struct gtalk_pvt *p)
1280 {
1281         struct ast_frame *f;
1282
1283         if (!p->rtp)
1284                 return &ast_null_frame;
1285         f = ast_rtp_read(p->rtp);
1286         gtalk_update_stun(p->parent, p);
1287         if (p->owner) {
1288                 /* We already hold the channel lock */
1289                 if (f->frametype == AST_FRAME_VOICE) {
1290                         if (f->subclass != (p->owner->nativeformats & AST_FORMAT_AUDIO_MASK)) {
1291                                 ast_debug(1, "Oooh, format changed to %d\n", f->subclass);
1292                                 p->owner->nativeformats =
1293                                         (p->owner->nativeformats & AST_FORMAT_VIDEO_MASK) | f->subclass;
1294                                 ast_set_read_format(p->owner, p->owner->readformat);
1295                                 ast_set_write_format(p->owner, p->owner->writeformat);
1296                         }
1297 /*                      if ((ast_test_flag(p, SIP_DTMF) == SIP_DTMF_INBAND) && p->vad) {
1298                                 f = ast_dsp_process(p->owner, p->vad, f);
1299                                 if (option_debug && f && (f->frametype == AST_FRAME_DTMF))
1300                                         ast_debug(1, "* Detected inband DTMF '%c'\n", f->subclass);
1301                         } */
1302                 }
1303         }
1304         return f;
1305 }
1306
1307 static struct ast_frame *gtalk_read(struct ast_channel *ast)
1308 {
1309         struct ast_frame *fr;
1310         struct gtalk_pvt *p = ast->tech_pvt;
1311
1312         ast_mutex_lock(&p->lock);
1313         fr = gtalk_rtp_read(ast, p);
1314         ast_mutex_unlock(&p->lock);
1315         return fr;
1316 }
1317
1318 /*! \brief Send frame to media channel (rtp) */
1319 static int gtalk_write(struct ast_channel *ast, struct ast_frame *frame)
1320 {
1321         struct gtalk_pvt *p = ast->tech_pvt;
1322         int res = 0;
1323
1324         switch (frame->frametype) {
1325         case AST_FRAME_VOICE:
1326                 if (!(frame->subclass & ast->nativeformats)) {
1327                         ast_log(LOG_WARNING,
1328                                         "Asked to transmit frame type %d, while native formats is %d (read/write = %d/%d)\n",
1329                                         frame->subclass, ast->nativeformats, ast->readformat,
1330                                         ast->writeformat);
1331                         return 0;
1332                 }
1333                 if (p) {
1334                         ast_mutex_lock(&p->lock);
1335                         if (p->rtp) {
1336                                 res = ast_rtp_write(p->rtp, frame);
1337                         }
1338                         ast_mutex_unlock(&p->lock);
1339                 }
1340                 break;
1341         case AST_FRAME_VIDEO:
1342                 if (p) {
1343                         ast_mutex_lock(&p->lock);
1344                         if (p->vrtp) {
1345                                 res = ast_rtp_write(p->vrtp, frame);
1346                         }
1347                         ast_mutex_unlock(&p->lock);
1348                 }
1349                 break;
1350         case AST_FRAME_IMAGE:
1351                 return 0;
1352                 break;
1353         default:
1354                 ast_log(LOG_WARNING, "Can't send %d type frames with Gtalk write\n",
1355                                 frame->frametype);
1356                 return 0;
1357         }
1358
1359         return res;
1360 }
1361
1362 static int gtalk_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
1363 {
1364         struct gtalk_pvt *p = newchan->tech_pvt;
1365         ast_mutex_lock(&p->lock);
1366
1367         if ((p->owner != oldchan)) {
1368                 ast_mutex_unlock(&p->lock);
1369                 return -1;
1370         }
1371         if (p->owner == oldchan)
1372                 p->owner = newchan;
1373         ast_mutex_unlock(&p->lock);
1374         return 0;
1375 }
1376
1377 static int gtalk_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
1378 {
1379         int res = 0;
1380
1381         switch (condition) {
1382         case AST_CONTROL_HOLD:
1383                 ast_moh_start(ast, data, NULL);
1384                 break;
1385         case AST_CONTROL_UNHOLD:
1386                 ast_moh_stop(ast);
1387                 break;
1388         default:
1389                 ast_log(LOG_NOTICE, "Don't know how to indicate condition '%d'\n", condition);
1390                 res = -1;
1391         }
1392
1393         return res;
1394 }
1395
1396 static int gtalk_digit_begin(struct ast_channel *chan, char digit)
1397 {
1398         return gtalk_digit(chan, digit, 0);
1399 }
1400
1401 static int gtalk_digit_end(struct ast_channel *chan, char digit, unsigned int duration)
1402 {
1403         return gtalk_digit(chan, digit, duration);
1404 }
1405
1406 static int gtalk_digit(struct ast_channel *ast, char digit, unsigned int duration)
1407 {
1408         struct gtalk_pvt *p = ast->tech_pvt;
1409         struct gtalk *client = p->parent;
1410         iks *iq, *gtalk, *dtmf;
1411         char buffer[2] = {digit, '\0'};
1412         iq = iks_new("iq");
1413         gtalk = iks_new("gtalk");
1414         dtmf = iks_new("dtmf");
1415         if(!iq || !gtalk || !dtmf) {
1416                 if(iq)
1417                         iks_delete(iq);
1418                 if(gtalk)
1419                         iks_delete(gtalk);
1420                 if(dtmf)
1421                         iks_delete(dtmf);
1422                 ast_log(LOG_ERROR, "Did not send dtmf do to memory issue\n");
1423                 return -1;
1424         }
1425
1426         iks_insert_attrib(iq, "type", "set");
1427         iks_insert_attrib(iq, "to", p->them);
1428         iks_insert_attrib(iq, "from", p->us);
1429         iks_insert_attrib(iq, "id", client->connection->mid);
1430         ast_aji_increment_mid(client->connection->mid);
1431         iks_insert_attrib(gtalk, "xmlns", "http://jabber.org/protocol/gtalk");
1432         iks_insert_attrib(gtalk, "action", "session-info");
1433         iks_insert_attrib(gtalk, "initiator", p->initiator ? p->us: p->them);
1434         iks_insert_attrib(gtalk, "sid", p->sid);
1435         iks_insert_attrib(dtmf, "xmlns", "http://jabber.org/protocol/gtalk/info/dtmf");
1436         iks_insert_attrib(dtmf, "code", buffer);
1437         iks_insert_node(iq, gtalk);
1438         iks_insert_node(gtalk, dtmf);
1439
1440         ast_mutex_lock(&p->lock);
1441         if (ast->dtmff.frametype == AST_FRAME_DTMF_BEGIN || duration == 0) {
1442                 iks_insert_attrib(dtmf, "action", "button-down");
1443         } else if (ast->dtmff.frametype == AST_FRAME_DTMF_END || duration != 0) {
1444                 iks_insert_attrib(dtmf, "action", "button-up");
1445         }
1446         ast_aji_send(client->connection, iq);
1447         iks_delete(iq);
1448         iks_delete(gtalk);
1449         iks_delete(dtmf);
1450         ast_mutex_unlock(&p->lock);
1451         return 0;
1452 }
1453
1454 static int gtalk_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
1455 {
1456         ast_log(LOG_NOTICE, "XXX Implement gtalk sendhtml XXX\n");
1457
1458         return -1;
1459 }
1460
1461 /* Not in use right now.
1462 static int gtalk_auto_congest(void *nothing)
1463 {
1464         struct gtalk_pvt *p = nothing;
1465
1466         ast_mutex_lock(&p->lock);
1467         if (p->owner) {
1468                 if (!ast_channel_trylock(p->owner)) {
1469                         ast_log(LOG_NOTICE, "Auto-congesting %s\n", p->owner->name);
1470                         ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
1471                         ast_channel_unlock(p->owner);
1472                 }
1473         }
1474         ast_mutex_unlock(&p->lock);
1475         return 0;
1476 }
1477 */
1478
1479 /*! \brief Initiate new call, part of PBX interface
1480  *      dest is the dial string */
1481 static int gtalk_call(struct ast_channel *ast, char *dest, int timeout)
1482 {
1483         struct gtalk_pvt *p = ast->tech_pvt;
1484
1485         if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
1486                 ast_log(LOG_WARNING, "gtalk_call called on %s, neither down nor reserved\n", ast->name);
1487                 return -1;
1488         }
1489
1490         ast_setstate(ast, AST_STATE_RING);
1491         p->jointcapability = p->capability;
1492         if (!p->ringrule) {
1493                 ast_copy_string(p->ring, p->parent->connection->mid, sizeof(p->ring));
1494                 p->ringrule = iks_filter_add_rule(p->parent->connection->f, gtalk_ringing_ack, p,
1495                                                         IKS_RULE_ID, p->ring, IKS_RULE_DONE);
1496         } else
1497                 ast_log(LOG_WARNING, "Whoa, already have a ring rule!\n");
1498
1499         gtalk_invite(p, p->them, p->us, p->sid, 1);
1500         gtalk_create_candidates(p->parent, p, p->sid, p->them, p->us);
1501
1502         return 0;
1503 }
1504
1505 /*! \brief Hangup a call through the gtalk proxy channel */
1506 static int gtalk_hangup(struct ast_channel *ast)
1507 {
1508         struct gtalk_pvt *p = ast->tech_pvt;
1509         struct gtalk *client;
1510
1511         ast_mutex_lock(&p->lock);
1512         client = p->parent;
1513         p->owner = NULL;
1514         ast->tech_pvt = NULL;
1515         if (!p->alreadygone)
1516                 gtalk_action(client, p, "terminate");
1517         ast_mutex_unlock(&p->lock);
1518
1519         gtalk_free_pvt(client, p);
1520         ast_module_unref(ast_module_info->self);
1521
1522         return 0;
1523 }
1524
1525 /*! \brief Part of PBX interface */
1526 static struct ast_channel *gtalk_request(const char *type, int format, void *data, int *cause)
1527 {
1528         struct gtalk_pvt *p = NULL;
1529         struct gtalk *client = NULL;
1530         char *sender = NULL, *to = NULL, *s = NULL;
1531         struct ast_channel *chan = NULL;
1532
1533         if (data) {
1534                 s = ast_strdupa(data);
1535                 if (s) {
1536                         sender = strsep(&s, "/");
1537                         if (sender && (sender[0] != '\0'))
1538                                 to = strsep(&s, "/");
1539                         if (!to) {
1540                                 ast_log(LOG_ERROR, "Bad arguments in Gtalk Dialstring: %s\n", (char*) data);
1541                                 return NULL;
1542                         }
1543                 }
1544         }
1545         client = find_gtalk(to, sender);
1546         if (!client) {
1547                 ast_log(LOG_WARNING, "Could not find recipient.\n");
1548                 return NULL;
1549         }
1550         ASTOBJ_WRLOCK(client);
1551         p = gtalk_alloc(client, strchr(sender, '@') ? sender : client->connection->jid->full, strchr(to, '@') ? to : client->user, NULL);
1552         if (p)
1553                 chan = gtalk_new(client, p, AST_STATE_DOWN, to);
1554
1555         ASTOBJ_UNLOCK(client);
1556         return chan;
1557 }
1558
1559 /*! \brief CLI command "gtalk show channels" */
1560 static char *gtalk_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1561 {
1562 #define FORMAT  "%-30.30s  %-30.30s  %-15.15s  %-5.5s %-5.5s \n"
1563         struct gtalk_pvt *p;
1564         struct ast_channel *chan;
1565         int numchans = 0;
1566         char them[AJI_MAX_JIDLEN];
1567         char *jid = NULL;
1568         char *resource = NULL;
1569
1570         switch (cmd) {
1571         case CLI_INIT:
1572                 e->command = "gtalk show channels";
1573                 e->usage =
1574                         "Usage: gtalk show channels\n"
1575                         "       Shows current state of the Gtalk channels.\n";
1576                 return NULL;
1577         case CLI_GENERATE:
1578                 return NULL;
1579         }
1580
1581         if (a->argc != 3)
1582                 return CLI_SHOWUSAGE;
1583
1584         ast_mutex_lock(&gtalklock);
1585         ast_cli(a->fd, FORMAT, "Channel", "Jabber ID", "Resource", "Read", "Write");
1586         ASTOBJ_CONTAINER_TRAVERSE(&gtalk_list, 1, {
1587                 ASTOBJ_WRLOCK(iterator);
1588                 p = iterator->p;
1589                 while(p) {
1590                         chan = p->owner;
1591                         ast_copy_string(them, p->them, sizeof(them));
1592                         jid = them;
1593                         resource = strchr(them, '/');
1594                         if (!resource)
1595                                 resource = "None";
1596                         else {
1597                                 *resource = '\0';
1598                                 resource ++;
1599                         }
1600                         if (chan)
1601                                 ast_cli(a->fd, FORMAT,
1602                                         chan->name,
1603                                         jid,
1604                                         resource,
1605                                         ast_getformatname(chan->readformat),
1606                                         ast_getformatname(chan->writeformat)
1607                                         );
1608                         else
1609                                 ast_log(LOG_WARNING, "No available channel\n");
1610                         numchans ++;
1611                         p = p->next;
1612                 }
1613                 ASTOBJ_UNLOCK(iterator);
1614         });
1615
1616         ast_mutex_unlock(&gtalklock);
1617
1618         ast_cli(a->fd, "%d active gtalk channel%s\n", numchans, (numchans != 1) ? "s" : "");
1619         return CLI_SUCCESS;
1620 #undef FORMAT
1621 }
1622
1623 /*! \brief CLI command "gtalk reload" */
1624 static char *gtalk_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
1625 {
1626         switch (cmd) {
1627         case CLI_INIT:
1628                 e->command = "gtalk reload";
1629                 e->usage =
1630                         "Usage: gtalk reload\n"
1631                         "       Reload gtalk channel driver.\n";
1632                 return NULL;
1633         case CLI_GENERATE:
1634                 return NULL;
1635         }
1636
1637         ast_verbose("IT DOES WORK!\n");
1638         return CLI_SUCCESS;
1639 }
1640
1641 static int gtalk_parser(void *data, ikspak *pak)
1642 {
1643         struct gtalk *client = ASTOBJ_REF((struct gtalk *) data);
1644
1645         if (iks_find_with_attrib(pak->x, "session", "type", "initiate")) {
1646                 /* New call */
1647                 gtalk_newcall(client, pak);
1648         } else if (iks_find_with_attrib(pak->x, "session", "type", "candidates") || iks_find_with_attrib(pak->x, "session", "type", "transport-info")) {
1649                 ast_debug(3, "About to add candidate!\n");
1650                 gtalk_add_candidate(client, pak);
1651                 ast_debug(3, "Candidate Added!\n");
1652         } else if (iks_find_with_attrib(pak->x, "session", "type", "accept")) {
1653                 gtalk_is_answered(client, pak);
1654         } else if (iks_find_with_attrib(pak->x, "session", "type", "transport-accept")) {
1655                 gtalk_is_accepted(client, pak);
1656         } else if (iks_find_with_attrib(pak->x, "session", "type", "content-info") || iks_find_with_attrib(pak->x, "gtalk", "action", "session-info")) {
1657                 gtalk_handle_dtmf(client, pak);
1658         } else if (iks_find_with_attrib(pak->x, "session", "type", "terminate")) {
1659                 gtalk_hangup_farend(client, pak);
1660         } else if (iks_find_with_attrib(pak->x, "session", "type", "reject")) {
1661                 gtalk_hangup_farend(client, pak);
1662         }
1663         ASTOBJ_UNREF(client, gtalk_member_destroy);
1664         return IKS_FILTER_EAT;
1665 }
1666
1667 /* Not using this anymore probably take out soon
1668 static struct gtalk_candidate *gtalk_create_candidate(char *args)
1669 {
1670         char *name, *type, *preference, *protocol;
1671         struct gtalk_candidate *res;
1672         res = ast_calloc(1, sizeof(*res));
1673         if (args)
1674                 name = args;
1675         if ((args = strchr(args, ','))) {
1676                 *args = '\0';
1677                 args++;
1678                 preference = args;
1679         }
1680         if ((args = strchr(args, ','))) {
1681                 *args = '\0';
1682                 args++;
1683                 protocol = args;
1684         }
1685         if ((args = strchr(args, ','))) {
1686                 *args = '\0';
1687                 args++;
1688                 type = args;
1689         }
1690         if (name)
1691                 ast_copy_string(res->name, name, sizeof(res->name));
1692         if (preference) {
1693                 res->preference = atof(preference);
1694         }
1695         if (protocol) {
1696                 if (!strcasecmp("udp", protocol))
1697                         res->protocol = AJI_PROTOCOL_UDP;
1698                 if (!strcasecmp("ssltcp", protocol))
1699                         res->protocol = AJI_PROTOCOL_SSLTCP;
1700         }
1701         if (type) {
1702                 if (!strcasecmp("stun", type))
1703                         res->type = AJI_CONNECT_STUN;
1704                 if (!strcasecmp("local", type))
1705                         res->type = AJI_CONNECT_LOCAL;
1706                 if (!strcasecmp("relay", type))
1707                         res->type = AJI_CONNECT_RELAY;
1708         }
1709
1710         return res;
1711 }
1712 */
1713
1714 static int gtalk_create_member(char *label, struct ast_variable *var, int allowguest,
1715                                                                 struct ast_codec_pref prefs, char *context,
1716                                                                 struct gtalk *member)
1717 {
1718         struct aji_client *client;
1719
1720         if (!member)
1721                 ast_log(LOG_WARNING, "Out of memory.\n");
1722
1723         ast_copy_string(member->name, label, sizeof(member->name));
1724         ast_copy_string(member->user, label, sizeof(member->user));
1725         ast_copy_string(member->context, context, sizeof(member->context));
1726         member->allowguest = allowguest;
1727         member->prefs = prefs;
1728         while (var) {
1729 #if 0
1730                 struct gtalk_candidate *candidate = NULL;
1731 #endif
1732                 if (!strcasecmp(var->name, "username"))
1733                         ast_copy_string(member->user, var->value, sizeof(member->user));
1734                 else if (!strcasecmp(var->name, "disallow"))
1735                         ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 0);
1736                 else if (!strcasecmp(var->name, "allow"))
1737                         ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 1);
1738                 else if (!strcasecmp(var->name, "context"))
1739                         ast_copy_string(member->context, var->value, sizeof(member->context));
1740 #if 0
1741                 else if (!strcasecmp(var->name, "candidate")) {
1742                         candidate = gtalk_create_candidate(var->value);
1743                         if (candidate) {
1744                                 candidate->next = member->ourcandidates;
1745                                 member->ourcandidates = candidate;
1746                         }
1747                 }
1748 #endif
1749                 else if (!strcasecmp(var->name, "connection")) {
1750                         if ((client = ast_aji_get_client(var->value))) {
1751                                 member->connection = client;
1752                                 iks_filter_add_rule(client->f, gtalk_parser, member,
1753                                                     IKS_RULE_TYPE, IKS_PAK_IQ,
1754                                                     IKS_RULE_FROM_PARTIAL, member->user,
1755                                                     IKS_RULE_NS, "http://www.google.com/session",
1756                                                     IKS_RULE_DONE);
1757
1758                         } else {
1759                                 ast_log(LOG_ERROR, "connection referenced not found!\n");
1760                                 return 0;
1761                         }
1762                 }
1763                 var = var->next;
1764         }
1765         if (member->connection && member->user)
1766                 member->buddy = ASTOBJ_CONTAINER_FIND(&member->connection->buddies, member->user);
1767         else {
1768                 ast_log(LOG_ERROR, "No Connection or Username!\n");
1769         }
1770         return 1;
1771 }
1772
1773 static int gtalk_load_config(void)
1774 {
1775         char *cat = NULL;
1776         struct ast_config *cfg = NULL;
1777         char context[AST_MAX_CONTEXT];
1778         int allowguest = 1;
1779         struct ast_variable *var;
1780         struct gtalk *member;
1781         struct ast_codec_pref prefs;
1782         struct aji_client_container *clients;
1783         struct gtalk_candidate *global_candidates = NULL;
1784         struct hostent *hp;
1785         struct ast_hostent ahp;
1786         struct ast_flags config_flags = { 0 };
1787
1788         cfg = ast_config_load(GOOGLE_CONFIG, config_flags);
1789         if (!cfg)
1790                 return 0;
1791
1792         /* Copy the default jb config over global_jbconf */
1793         memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
1794
1795         cat = ast_category_browse(cfg, NULL);
1796         for (var = ast_variable_browse(cfg, "general"); var; var = var->next) {
1797                 /* handle jb conf */
1798                 if (!ast_jb_read_conf(&global_jbconf, var->name, var->value))
1799                         continue;
1800
1801                 if (!strcasecmp(var->name, "allowguest"))
1802                         allowguest =
1803                                 (ast_true(ast_variable_retrieve(cfg, "general", "allowguest"))) ? 1 : 0;
1804                 else if (!strcasecmp(var->name, "disallow"))
1805                         ast_parse_allow_disallow(&prefs, &global_capability, var->value, 0);
1806                 else if (!strcasecmp(var->name, "allow"))
1807                         ast_parse_allow_disallow(&prefs, &global_capability, var->value, 1);
1808                 else if (!strcasecmp(var->name, "context"))
1809                         ast_copy_string(context, var->value, sizeof(context));
1810                 else if (!strcasecmp(var->name, "bindaddr")) {
1811                         if (!(hp = ast_gethostbyname(var->value, &ahp))) {
1812                                 ast_log(LOG_WARNING, "Invalid address: %s\n", var->value);
1813                         } else {
1814                                 memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr));
1815                         }
1816                 }
1817 /*  Idea to allow for custom candidates  */
1818 /*
1819                 else if (!strcasecmp(var->name, "candidate")) {
1820                         candidate = gtalk_create_candidate(var->value);
1821                         if (candidate) {
1822                                 candidate->next = global_candidates;
1823                                 global_candidates = candidate;
1824                         }
1825                 }
1826 */
1827         }
1828         while (cat) {
1829                 if (strcasecmp(cat, "general")) {
1830                         var = ast_variable_browse(cfg, cat);
1831                         member = ast_calloc(1, sizeof(*member));
1832                         ASTOBJ_INIT(member);
1833                         ASTOBJ_WRLOCK(member);
1834                         if (!strcasecmp(cat, "guest")) {
1835                                 ast_copy_string(member->name, "guest", sizeof(member->name));
1836                                 ast_copy_string(member->user, "guest", sizeof(member->user));
1837                                 ast_copy_string(member->context, context, sizeof(member->context));
1838                                 member->allowguest = allowguest;
1839                                 member->prefs = prefs;
1840                                 while (var) {
1841                                         if (!strcasecmp(var->name, "disallow"))
1842                                                 ast_parse_allow_disallow(&member->prefs, &member->capability,
1843                                                                                                  var->value, 0);
1844                                         else if (!strcasecmp(var->name, "allow"))
1845                                                 ast_parse_allow_disallow(&member->prefs, &member->capability,
1846                                                                                                  var->value, 1);
1847                                         else if (!strcasecmp(var->name, "context"))
1848                                                 ast_copy_string(member->context, var->value,
1849                                                                                 sizeof(member->context));
1850 /*  Idea to allow for custom candidates  */
1851 /*
1852                                         else if (!strcasecmp(var->name, "candidate")) {
1853                                                 candidate = gtalk_create_candidate(var->value);
1854                                                 if (candidate) {
1855                                                         candidate->next = member->ourcandidates;
1856                                                         member->ourcandidates = candidate;
1857                                                 }
1858                                         }
1859 */
1860                                         var = var->next;
1861                                 }
1862                                 ASTOBJ_UNLOCK(member);
1863                                 clients = ast_aji_get_clients();
1864                                 if (clients) {
1865                                         ASTOBJ_CONTAINER_TRAVERSE(clients, 1, {
1866                                                 ASTOBJ_WRLOCK(iterator);
1867                                                 ASTOBJ_WRLOCK(member);
1868                                                 member->connection = iterator;
1869                                                 iks_filter_add_rule(iterator->f, gtalk_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, "http://www.google.com/session", IKS_RULE_DONE);
1870                                                 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);
1871                                                 ASTOBJ_UNLOCK(member);
1872                                                 ASTOBJ_CONTAINER_LINK(&gtalk_list, member);
1873                                                 ASTOBJ_UNLOCK(iterator);
1874                                         });
1875                                 } else {
1876                                         ASTOBJ_UNLOCK(member);
1877                                         ASTOBJ_UNREF(member, gtalk_member_destroy);
1878                                 }
1879                         } else {
1880                                 ASTOBJ_UNLOCK(member);
1881                                 if (gtalk_create_member(cat, var, allowguest, prefs, context, member))
1882                                         ASTOBJ_CONTAINER_LINK(&gtalk_list, member);
1883                                 ASTOBJ_UNREF(member, gtalk_member_destroy);
1884                         }
1885                 }
1886                 cat = ast_category_browse(cfg, cat);
1887         }
1888         gtalk_free_candidates(global_candidates);
1889         return 1;
1890 }
1891
1892 /*! \brief Load module into PBX, register channel */
1893 static int load_module(void)
1894 {
1895         ASTOBJ_CONTAINER_INIT(&gtalk_list);
1896         if (!gtalk_load_config()) {
1897                 ast_log(LOG_ERROR, "Unable to read config file %s. Not loading module.\n", GOOGLE_CONFIG);
1898                 return 0;
1899         }
1900
1901         sched = sched_context_create();
1902         if (!sched)
1903                 ast_log(LOG_WARNING, "Unable to create schedule context\n");
1904
1905         io = io_context_create();
1906         if (!io)
1907                 ast_log(LOG_WARNING, "Unable to create I/O context\n");
1908
1909         if (ast_find_ourip(&__ourip, bindaddr)) {
1910                 ast_log(LOG_WARNING, "Unable to get own IP address, Gtalk disabled\n");
1911                 return 0;
1912         }
1913
1914         ast_rtp_proto_register(&gtalk_rtp);
1915         ast_cli_register_multiple(gtalk_cli, sizeof(gtalk_cli) / sizeof(gtalk_cli[0]));
1916
1917         /* Make sure we can register our channel type */
1918         if (ast_channel_register(&gtalk_tech)) {
1919                 ast_log(LOG_ERROR, "Unable to register channel class %s\n", gtalk_tech.type);
1920                 return -1;
1921         }
1922         return 0;
1923 }
1924
1925 /*! \brief Reload module */
1926 static int reload(void)
1927 {
1928         return 0;
1929 }
1930
1931 /*! \brief Unload the gtalk channel from Asterisk */
1932 static int unload_module(void)
1933 {
1934         struct gtalk_pvt *privates = NULL;
1935         ast_cli_unregister_multiple(gtalk_cli, sizeof(gtalk_cli) / sizeof(gtalk_cli[0]));
1936         /* First, take us out of the channel loop */
1937         ast_channel_unregister(&gtalk_tech);
1938         ast_rtp_proto_unregister(&gtalk_rtp);
1939
1940         if (!ast_mutex_lock(&gtalklock)) {
1941                 /* Hangup all interfaces if they have an owner */
1942                 ASTOBJ_CONTAINER_TRAVERSE(&gtalk_list, 1, {
1943                         ASTOBJ_WRLOCK(iterator);
1944                         privates = iterator->p;
1945                         while(privates) {
1946                                 if (privates->owner)
1947                                         ast_softhangup(privates->owner, AST_SOFTHANGUP_APPUNLOAD);
1948                                 privates = privates->next;
1949                         }
1950                         iterator->p = NULL;
1951                         ASTOBJ_UNLOCK(iterator);
1952                 });
1953                 ast_mutex_unlock(&gtalklock);
1954         } else {
1955                 ast_log(LOG_WARNING, "Unable to lock the monitor\n");
1956                 return -1;
1957         }
1958         ASTOBJ_CONTAINER_DESTROYALL(&gtalk_list, gtalk_member_destroy);
1959         ASTOBJ_CONTAINER_DESTROY(&gtalk_list);
1960         return 0;
1961 }
1962
1963 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Gtalk Channel Driver",
1964                 .load = load_module,
1965                 .unload = unload_module,
1966                 .reload = reload,
1967                );