chan_jingle.c

Go to the documentation of this file.

/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2005, Digium, Inc.
 *
 * Matt O'Gorman <mogorman@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 *
 * \author Matt O'Gorman <mogorman@digium.com>
 *
 * \brief Jingle Channel Driver
 *
 * \extref Iksemel http://iksemel.jabberstudio.org/
 * 
 * \ingroup channel_drivers
 */

/*** MODULEINFO
   <depend>iksemel</depend>
   <depend>res_jabber</depend>
   <use type="external">openssl</use>
   <defaultenabled>no</defaultenabled>
   <support_level>deprecated</support_level>
   <replacement>chan_motif</replacement>
 ***/

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 381976 $")

#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 "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/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"

#define JINGLE_CONFIG "jingle.conf"

/*! Global jitterbuffer configuration - by default, jb is disabled */
static struct ast_jb_conf default_jbconf =
{
   .flags = 0,
   .max_size = -1,
   .resync_threshold = -1,
   .impl = "",
   .target_extra = -1,
};
static struct ast_jb_conf global_jbconf;

enum jingle_protocol {
   AJI_PROTOCOL_UDP,
   AJI_PROTOCOL_SSLTCP,
};

enum jingle_connect_type {
   AJI_CONNECT_HOST,
   AJI_CONNECT_PRFLX,
   AJI_CONNECT_RELAY,
   AJI_CONNECT_SRFLX,
};

struct jingle_pvt {
   ast_mutex_t lock;                /*!< Channel private lock */
   time_t laststun;
   struct jingle *parent;           /*!< Parent client */
   char sid[100];
   char them[AJI_MAX_JIDLEN];
   char ring[10];                   /*!< Message ID of ring */
   iksrule *ringrule;               /*!< Rule for matching RING request */
   int initiator;                   /*!< If we're the initiator */
   int alreadygone;
   struct ast_codec_pref prefs;
   struct jingle_candidate *theircandidates;
   struct jingle_candidate *ourcandidates;
   char cid_num[80];                /*!< Caller ID num */
   char cid_name[80];               /*!< Caller ID name */
   char exten[80];                  /*!< Called extension */
   struct ast_channel *owner;       /*!< Master Channel */
   char audio_content_name[100];    /*!< name attribute of content tag */
   struct ast_rtp_instance *rtp;             /*!< RTP audio session */
   char video_content_name[100];    /*!< name attribute of content tag */
   struct ast_rtp_instance *vrtp;            /*!< RTP video session */
   struct ast_format_cap *cap;
   struct ast_format_cap *jointcap;             /*!< Supported capability at both ends (codecs ) */
   struct ast_format_cap *peercap;
   struct jingle_pvt *next;   /* Next entity */
};

struct jingle_candidate {
   unsigned int component;          /*!< ex. : 1 for RTP, 2 for RTCP */
   unsigned int foundation;         /*!< Function of IP, protocol, type */
   unsigned int generation;
   char ip[16];
   unsigned int network;
   unsigned int port;
   unsigned int priority;
   enum jingle_protocol protocol;
   char password[100];
   enum jingle_connect_type type;
   char ufrag[100];
   unsigned int preference;
   struct jingle_candidate *next;
};

struct jingle {
   ASTOBJ_COMPONENTS(struct jingle);
   struct aji_client *connection;
   struct aji_buddy *buddy;
   struct jingle_pvt *p;
   struct ast_codec_pref prefs;
   int amaflags;        /*!< AMA Flags */
   char user[100];
   char context[100];
   char accountcode[AST_MAX_ACCOUNT_CODE];   /*!< Account code */
   struct ast_format_cap *cap;
   ast_group_t callgroup;  /*!< Call group */
   ast_group_t pickupgroup;   /*!< Pickup group */
   int callingpres;     /*!< Calling presentation */
   int allowguest;
   char language[MAX_LANGUAGE];  /*!<  Default language for prompts */
   char musicclass[MAX_MUSICCLASS]; /*!<  Music on Hold class */
   char parkinglot[AST_MAX_CONTEXT];   /*!< Parkinglot */
};

struct jingle_container {
   ASTOBJ_CONTAINER_COMPONENTS(struct jingle);
};

static const char desc[] = "Jingle Channel";
static const char channel_type[] = "Jingle";

static struct ast_format_cap *global_capability;

AST_MUTEX_DEFINE_STATIC(jinglelock); /*!< Protect the interface list (of jingle_pvt's) */

/* Forward declarations */
static struct ast_channel *jingle_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, const char *data, int *cause);
static int jingle_sendtext(struct ast_channel *ast, const char *text);
static int jingle_digit_begin(struct ast_channel *ast, char digit);
static int jingle_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
static int jingle_call(struct ast_channel *ast, const char *dest, int timeout);
static int jingle_hangup(struct ast_channel *ast);
static int jingle_answer(struct ast_channel *ast);
static int jingle_newcall(struct jingle *client, ikspak *pak);
static struct ast_frame *jingle_read(struct ast_channel *ast);
static int jingle_write(struct ast_channel *ast, struct ast_frame *f);
static int jingle_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen);
static int jingle_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
static int jingle_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen);
static struct jingle_pvt *jingle_alloc(struct jingle *client, const char *from, const char *sid);
static char *jingle_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static char *jingle_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);

/*! \brief PBX interface structure for channel registration */
static struct ast_channel_tech jingle_tech = {
   .type = "Jingle",
   .description = "Jingle Channel Driver",
   .requester = jingle_request,
   .send_text = jingle_sendtext,
   .send_digit_begin = jingle_digit_begin,
   .send_digit_end = jingle_digit_end,
   .bridge = ast_rtp_instance_bridge,
   .call = jingle_call,
   .hangup = jingle_hangup,
   .answer = jingle_answer,
   .read = jingle_read,
   .write = jingle_write,
   .exception = jingle_read,
   .indicate = jingle_indicate,
   .fixup = jingle_fixup,
   .send_html = jingle_sendhtml,
   .properties = AST_CHAN_TP_WANTSJITTER | AST_CHAN_TP_CREATESJITTER
};

static struct sockaddr_in bindaddr = { 0, }; /*!< The address we bind to */

static struct ast_sched_context *sched;   /*!< The scheduling context */
static struct io_context *io; /*!< The IO context */
static struct in_addr __ourip;

static struct ast_cli_entry jingle_cli[] = {
   AST_CLI_DEFINE(jingle_do_reload, "Reload Jingle configuration"),
   AST_CLI_DEFINE(jingle_show_channels, "Show Jingle channels"),
};


static char externip[16];

static struct jingle_container jingle_list;

static void jingle_member_destroy(struct jingle *obj)
{
   obj->cap = ast_format_cap_destroy(obj->cap);
   if (obj->connection) {
      ASTOBJ_UNREF(obj->connection, ast_aji_client_destroy);
   }
   if (obj->buddy) {
      ASTOBJ_UNREF(obj->buddy, ast_aji_buddy_destroy);
   }
   ast_free(obj);
}

/* XXX This could be a source of reference leaks given that the CONTAINER_FIND
 * macros bump the refcount while the traversal does not. */
static struct jingle *find_jingle(char *name, char *connection)
{
   struct jingle *jingle = NULL;

   jingle = ASTOBJ_CONTAINER_FIND(&jingle_list, name);
   if (!jingle && strchr(name, '@'))
      jingle = ASTOBJ_CONTAINER_FIND_FULL(&jingle_list, name, user,,, strcasecmp);

   if (!jingle) {          
      /* guest call */
      ASTOBJ_CONTAINER_TRAVERSE(&jingle_list, 1, {
         ASTOBJ_RDLOCK(iterator);
         if (!strcasecmp(iterator->name, "guest")) {
            jingle = iterator;
         }
         ASTOBJ_UNLOCK(iterator);

         if (jingle)
            break;
      });

   }
   return jingle;
}


static void add_codec_to_answer(const struct jingle_pvt *p, struct ast_format *codec, iks *dcodecs)
{
   const char *format = ast_getformatname(codec);

   if (!strcasecmp("ulaw", format)) {
      iks *payload_eg711u, *payload_pcmu;
      payload_pcmu = iks_new("payload-type");
      iks_insert_attrib(payload_pcmu, "id", "0");
      iks_insert_attrib(payload_pcmu, "name", "PCMU");
      payload_eg711u = iks_new("payload-type");
      iks_insert_attrib(payload_eg711u, "id", "100");
      iks_insert_attrib(payload_eg711u, "name", "EG711U");
      iks_insert_node(dcodecs, payload_pcmu);
      iks_insert_node(dcodecs, payload_eg711u);
   }
   if (!strcasecmp("alaw", format)) {
      iks *payload_eg711a;
      iks *payload_pcma = iks_new("payload-type");
      iks_insert_attrib(payload_pcma, "id", "8");
      iks_insert_attrib(payload_pcma, "name", "PCMA");
      payload_eg711a = iks_new("payload-type");
      iks_insert_attrib(payload_eg711a, "id", "101");
      iks_insert_attrib(payload_eg711a, "name", "EG711A");
      iks_insert_node(dcodecs, payload_pcma);
      iks_insert_node(dcodecs, payload_eg711a);
   }
   if (!strcasecmp("ilbc", format)) {
      iks *payload_ilbc = iks_new("payload-type");
      iks_insert_attrib(payload_ilbc, "id", "97");
      iks_insert_attrib(payload_ilbc, "name", "iLBC");
      iks_insert_node(dcodecs, payload_ilbc);
   }
   if (!strcasecmp("g723", format)) {
      iks *payload_g723 = iks_new("payload-type");
      iks_insert_attrib(payload_g723, "id", "4");
      iks_insert_attrib(payload_g723, "name", "G723");
      iks_insert_node(dcodecs, payload_g723);
   }
}

static int jingle_accept_call(struct jingle *client, struct jingle_pvt *p)
{
   struct jingle_pvt *tmp = client->p;
   struct aji_client *c = client->connection;
   iks *iq, *jingle, *dcodecs, *payload_red, *payload_audio, *payload_cn;
   int x;
   struct ast_format pref_codec;
   struct ast_format_cap *alreadysent = ast_format_cap_alloc_nolock();

   if (p->initiator || !alreadysent)
      return 1;

   iq = iks_new("iq");
   jingle = iks_new(JINGLE_NODE);
   dcodecs = iks_new("description");
   if (iq && jingle && dcodecs) {
      iks_insert_attrib(dcodecs, "xmlns", JINGLE_AUDIO_RTP_NS);

      for (x = 0; x < AST_CODEC_PREF_SIZE; x++) {
         if (!(ast_codec_pref_index(&client->prefs, x, &pref_codec)))
            break;
         if (!(ast_format_cap_iscompatible(client->cap, &pref_codec)))
            continue;
         if ((ast_format_cap_iscompatible(alreadysent, &pref_codec)))
            continue;
         add_codec_to_answer(p, &pref_codec, dcodecs);
         ast_format_cap_add(alreadysent, &pref_codec);
      }
      payload_red = iks_new("payload-type");
      iks_insert_attrib(payload_red, "id", "117");
      iks_insert_attrib(payload_red, "name", "red");
      payload_audio = iks_new("payload-type");
      iks_insert_attrib(payload_audio, "id", "106");
      iks_insert_attrib(payload_audio, "name", "audio/telephone-event");
      payload_cn = iks_new("payload-type");
      iks_insert_attrib(payload_cn, "id", "13");
      iks_insert_attrib(payload_cn, "name", "CN");


      iks_insert_attrib(iq, "type", "set");
      iks_insert_attrib(iq, "to", (p->them) ? p->them : client->user);
      iks_insert_attrib(iq, "id", client->connection->mid);
      ast_aji_increment_mid(client->connection->mid);

      iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
      iks_insert_attrib(jingle, "action", JINGLE_ACCEPT);
      iks_insert_attrib(jingle, "initiator", p->initiator ? client->connection->jid->full : p->them);
      iks_insert_attrib(jingle, JINGLE_SID, tmp->sid);
      iks_insert_node(iq, jingle);
      iks_insert_node(jingle, dcodecs);
      iks_insert_node(dcodecs, payload_red);
      iks_insert_node(dcodecs, payload_audio);
      iks_insert_node(dcodecs, payload_cn);

      ast_aji_send(c, iq);

      iks_delete(payload_red);
      iks_delete(payload_audio);
      iks_delete(payload_cn);
      iks_delete(dcodecs);
      iks_delete(jingle);
      iks_delete(iq);
   }
   alreadysent = ast_format_cap_destroy(alreadysent);
   return 1;
}

static int jingle_ringing_ack(void *data, ikspak *pak)
{
   struct jingle_pvt *p = data;

   if (p->ringrule)
      iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
   p->ringrule = NULL;
   if (p->owner)
      ast_queue_control(p->owner, AST_CONTROL_RINGING);
   return IKS_FILTER_EAT;
}

static int jingle_answer(struct ast_channel *ast)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(ast);
   struct jingle *client = p->parent;
   int res = 0;

   ast_debug(1, "Answer!\n");
   ast_mutex_lock(&p->lock);
   jingle_accept_call(client, p);
   ast_mutex_unlock(&p->lock);
   return res;
}

static enum ast_rtp_glue_result jingle_get_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance **instance)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(chan);
   enum ast_rtp_glue_result res = AST_RTP_GLUE_RESULT_FORBID;

   if (!p)
      return res;

   ast_mutex_lock(&p->lock);
   if (p->rtp) {
      ao2_ref(p->rtp, +1);
      *instance = p->rtp;
      res = AST_RTP_GLUE_RESULT_LOCAL;
   }
   ast_mutex_unlock(&p->lock);

   return res;
}

static void jingle_get_codec(struct ast_channel *chan, struct ast_format_cap *result)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(chan);
   ast_mutex_lock(&p->lock);
   ast_format_cap_copy(result, p->peercap);
   ast_mutex_unlock(&p->lock);
}

static int jingle_set_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance *rtp, struct ast_rtp_instance *vrtp, struct ast_rtp_instance *tpeer, const struct ast_format_cap *cap, int nat_active)
{
   struct jingle_pvt *p;

   p = ast_channel_tech_pvt(chan);
   if (!p)
      return -1;
   ast_mutex_lock(&p->lock);

/* if (rtp)
      ast_rtp_get_peer(rtp, &p->redirip);
   else
      memset(&p->redirip, 0, sizeof(p->redirip));
   p->redircodecs = codecs; */

   /* Reset lastrtprx timer */
   ast_mutex_unlock(&p->lock);
   return 0;
}

static struct ast_rtp_glue jingle_rtp_glue = {
   .type = "Jingle",
   .get_rtp_info = jingle_get_rtp_peer,
   .get_codec = jingle_get_codec,
   .update_peer = jingle_set_rtp_peer,
};

static int jingle_response(struct jingle *client, ikspak *pak, const char *reasonstr, const char *reasonstr2)
{
   iks *response = NULL, *error = NULL, *reason = NULL;
   int res = -1;

   response = iks_new("iq");
   if (response) {
      iks_insert_attrib(response, "type", "result");
      iks_insert_attrib(response, "from", client->connection->jid->full);
      iks_insert_attrib(response, "to", iks_find_attrib(pak->x, "from"));
      iks_insert_attrib(response, "id", iks_find_attrib(pak->x, "id"));
      if (reasonstr) {
         error = iks_new("error");
         if (error) {
            iks_insert_attrib(error, "type", "cancel");
            reason = iks_new(reasonstr);
            if (reason)
               iks_insert_node(error, reason);
            iks_insert_node(response, error);
         }
      }
      ast_aji_send(client->connection, response);
      res = 0;
   }
   
   iks_delete(reason);
   iks_delete(error);
   iks_delete(response);

   return res;
}

static int jingle_is_answered(struct jingle *client, ikspak *pak)
{
   struct jingle_pvt *tmp;

   ast_debug(1, "The client is %s\n", client->name);
   /* Make sure our new call doesn't exist yet */
   for (tmp = client->p; tmp; tmp = tmp->next) {
      if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid))
         break;
   }

   if (tmp) {
      if (tmp->owner)
         ast_queue_control(tmp->owner, AST_CONTROL_ANSWER);
   } else
      ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
   jingle_response(client, pak, NULL, NULL);
   return 1;
}

static int jingle_handle_dtmf(struct jingle *client, ikspak *pak)
{
   struct jingle_pvt *tmp;
   iks *dtmfnode = NULL, *dtmfchild = NULL;
   char *dtmf;
   /* Make sure our new call doesn't exist yet */
   for (tmp = client->p; tmp; tmp = tmp->next) {
      if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid))
         break;
   }

   if (tmp) {
      if(iks_find_with_attrib(pak->x, "dtmf-method", "method", "rtp")) {
         jingle_response(client,pak,
               "feature-not-implemented xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'",
               "unsupported-dtmf-method xmlns='http://www.xmpp.org/extensions/xep-0181.html#ns-errors'");
         return -1;
      }
      if ((dtmfnode = iks_find(pak->x, "dtmf"))) {
         if((dtmf = iks_find_attrib(dtmfnode, "code"))) {
            if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-up")) {
               struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
               f.subclass.integer = dtmf[0];
               ast_queue_frame(tmp->owner, &f);
               ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass.integer);
            } else if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-down")) {
               struct ast_frame f = {AST_FRAME_DTMF_END, };
               f.subclass.integer = dtmf[0];
               ast_queue_frame(tmp->owner, &f);
               ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass.integer);
            } else if(iks_find_attrib(pak->x, "dtmf")) { /* 250 millasecond default */
               struct ast_frame f = {AST_FRAME_DTMF, };
               f.subclass.integer = dtmf[0];
               ast_queue_frame(tmp->owner, &f);
               ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass.integer);
            }
         }
      } else if ((dtmfnode = iks_find_with_attrib(pak->x, JINGLE_NODE, "action", "session-info"))) {
         if((dtmfchild = iks_find(dtmfnode, "dtmf"))) {
            if((dtmf = iks_find_attrib(dtmfchild, "code"))) {
               if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-up")) {
                  struct ast_frame f = {AST_FRAME_DTMF_END, };
                  f.subclass.integer = dtmf[0];
                  ast_queue_frame(tmp->owner, &f);
                  ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass.integer);
               } else if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-down")) {
                  struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
                  f.subclass.integer = dtmf[0];
                  ast_queue_frame(tmp->owner, &f);
                  ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass.integer);
               }
            }
         }
      }
      jingle_response(client, pak, NULL, NULL);
      return 1;
   } else
      ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");

   jingle_response(client, pak, NULL, NULL);
   return 1;
}


static int jingle_hangup_farend(struct jingle *client, ikspak *pak)
{
   struct jingle_pvt *tmp;

   ast_debug(1, "The client is %s\n", client->name);
   /* Make sure our new call doesn't exist yet */
   for (tmp = client->p; tmp; tmp = tmp->next) {
      if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid))
         break;
   }

   if (tmp) {
      tmp->alreadygone = 1;
      if (tmp->owner)
         ast_queue_hangup(tmp->owner);
   } else
      ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
   jingle_response(client, pak, NULL, NULL);
   return 1;
}

static int jingle_create_candidates(struct jingle *client, struct jingle_pvt *p, char *sid, char *from)
{
   struct jingle_candidate *tmp;
   struct aji_client *c = client->connection;
   struct jingle_candidate *ours1 = NULL, *ours2 = NULL;
   struct sockaddr_in sin = { 0, };
   struct ast_sockaddr sin_tmp;
   struct ast_sockaddr us_tmp;
   struct ast_sockaddr bindaddr_tmp;
   struct in_addr us;
   struct in_addr externaddr;
   iks *iq, *jingle, *content, *transport, *candidate;
   char component[16], foundation[16], generation[16], network[16], pass[16], port[7], priority[16], user[16];


   iq = iks_new("iq");
   jingle = iks_new(JINGLE_NODE);
   content = iks_new("content");
   transport = iks_new("transport");
   candidate = iks_new("candidate");
   if (!iq || !jingle || !content || !transport || !candidate) {
      ast_log(LOG_ERROR, "Memory allocation error\n");
      goto safeout;
   }
   ours1 = ast_calloc(1, sizeof(*ours1));
   ours2 = ast_calloc(1, sizeof(*ours2));
   if (!ours1 || !ours2)
      goto safeout;

   iks_insert_node(iq, jingle);
   iks_insert_node(jingle, content);
   iks_insert_node(content, transport);
   iks_insert_node(transport, candidate);

   for (; p; p = p->next) {
      if (!strcasecmp(p->sid, sid))
         break;
   }

   if (!p) {
      ast_log(LOG_NOTICE, "No matching jingle session - SID %s!\n", sid);
      goto safeout;
   }

   ast_rtp_instance_get_local_address(p->rtp, &sin_tmp);
   ast_sockaddr_to_sin(&sin_tmp, &sin);
   ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
   ast_find_ourip(&us_tmp, &bindaddr_tmp, AF_INET);
   us.s_addr = htonl(ast_sockaddr_ipv4(&us_tmp));

   /* Setup our first jingle candidate */
   ours1->component = 1;
   ours1->foundation = (unsigned int)bindaddr.sin_addr.s_addr | AJI_CONNECT_HOST | AJI_PROTOCOL_UDP;
   ours1->generation = 0;
   ast_copy_string(ours1->ip, ast_inet_ntoa(us), sizeof(ours1->ip));
   ours1->network = 0;
   ours1->port = ntohs(sin.sin_port);
   ours1->priority = 1678246398;
   ours1->protocol = AJI_PROTOCOL_UDP;
   snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random());
   ast_copy_string(ours1->password, pass, sizeof(ours1->password));
   ours1->type = AJI_CONNECT_HOST;
   snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random());
   ast_copy_string(ours1->ufrag, user, sizeof(ours1->ufrag));
   p->ourcandidates = ours1;

   if (!ast_strlen_zero(externip)) {
      /* XXX We should really stun for this one not just go with externip XXX */
      if (inet_aton(externip, &externaddr))
         ast_log(LOG_WARNING, "Invalid extern IP : %s\n", externip);

      ours2->component = 1;
      ours2->foundation = (unsigned int)externaddr.s_addr | AJI_CONNECT_PRFLX | AJI_PROTOCOL_UDP;
      ours2->generation = 0;
      ast_copy_string(ours2->ip, externip, sizeof(ours2->ip));
      ours2->network = 0;
      ours2->port = ntohs(sin.sin_port);
      ours2->priority = 1678246397;
      ours2->protocol = AJI_PROTOCOL_UDP;
      snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random());
      ast_copy_string(ours2->password, pass, sizeof(ours2->password));
      ours2->type = AJI_CONNECT_PRFLX;

      snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random());
      ast_copy_string(ours2->ufrag, user, sizeof(ours2->ufrag));
      ours1->next = ours2;
      ours2 = NULL;
   }
   ours1 = NULL;

   for (tmp = p->ourcandidates; tmp; tmp = tmp->next) {
      snprintf(component, sizeof(component), "%u", tmp->component);
      snprintf(foundation, sizeof(foundation), "%u", tmp->foundation);
      snprintf(generation, sizeof(generation), "%u", tmp->generation);
      snprintf(network, sizeof(network), "%u", tmp->network);
      snprintf(port, sizeof(port), "%u", tmp->port);
      snprintf(priority, sizeof(priority), "%u", tmp->priority);

      iks_insert_attrib(iq, "from", c->jid->full);
      iks_insert_attrib(iq, "to", from);
      iks_insert_attrib(iq, "type", "set");
      iks_insert_attrib(iq, "id", c->mid);
      ast_aji_increment_mid(c->mid);
      iks_insert_attrib(jingle, "action", JINGLE_NEGOTIATE);
      iks_insert_attrib(jingle, JINGLE_SID, sid);
      iks_insert_attrib(jingle, "initiator", (p->initiator) ? c->jid->full : from);
      iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
      iks_insert_attrib(content, "creator", p->initiator ? "initiator" : "responder");
      iks_insert_attrib(content, "name", "asterisk-audio-content");
      iks_insert_attrib(transport, "xmlns", JINGLE_ICE_UDP_NS);
      iks_insert_attrib(candidate, "component", component);
      iks_insert_attrib(candidate, "foundation", foundation);
      iks_insert_attrib(candidate, "generation", generation);
      iks_insert_attrib(candidate, "ip", tmp->ip);
      iks_insert_attrib(candidate, "network", network);
      iks_insert_attrib(candidate, "port", port);
      iks_insert_attrib(candidate, "priority", priority);
      switch (tmp->protocol) {
      case AJI_PROTOCOL_UDP:
         iks_insert_attrib(candidate, "protocol", "udp");
         break;
      case AJI_PROTOCOL_SSLTCP:
         iks_insert_attrib(candidate, "protocol", "ssltcp");
         break;
      }
      iks_insert_attrib(candidate, "pwd", tmp->password);
      switch (tmp->type) {
      case AJI_CONNECT_HOST:
         iks_insert_attrib(candidate, "type", "host");
         break;
      case AJI_CONNECT_PRFLX:
         iks_insert_attrib(candidate, "type", "prflx");
         break;
      case AJI_CONNECT_RELAY:
         iks_insert_attrib(candidate, "type", "relay");
         break;
      case AJI_CONNECT_SRFLX:
         iks_insert_attrib(candidate, "type", "srflx");
         break;
      }
      iks_insert_attrib(candidate, "ufrag", tmp->ufrag);

      ast_aji_send(c, iq);
   }
   p->laststun = 0;

safeout:
   if (ours1)
      ast_free(ours1);
   if (ours2)
      ast_free(ours2);
   iks_delete(iq);
   iks_delete(jingle);
   iks_delete(content);
   iks_delete(transport);
   iks_delete(candidate);

   return 1;
}

static struct jingle_pvt *jingle_alloc(struct jingle *client, const char *from, const char *sid)
{
   struct jingle_pvt *tmp = NULL;
   struct aji_resource *resources = NULL;
   struct aji_buddy *buddy = NULL;
   char idroster[200];
   struct ast_sockaddr bindaddr_tmp;

   ast_debug(1, "The client is %s for alloc\n", client->name);
   if (!sid && !strchr(from, '/')) {   /* I started call! */
      if (!strcasecmp(client->name, "guest")) {
         buddy = ASTOBJ_CONTAINER_FIND(&client->connection->buddies, from);
         if (buddy) {
            resources = buddy->resources;
         }
      } else if (client->buddy)
         resources = client->buddy->resources;
      while (resources) {
         if (resources->cap->jingle) {
            break;
         }
         resources = resources->next;
      }
      if (resources)
         snprintf(idroster, sizeof(idroster), "%s/%s", from, resources->resource);
      else {
         ast_log(LOG_ERROR, "no jingle capable clients to talk to.\n");
         if (buddy) {
            ASTOBJ_UNREF(buddy, ast_aji_buddy_destroy);
         }
         return NULL;
      }
      if (buddy) {
         ASTOBJ_UNREF(buddy, ast_aji_buddy_destroy);
      }
   }
   if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
      return NULL;
   }

   tmp->cap = ast_format_cap_alloc_nolock();
   tmp->jointcap = ast_format_cap_alloc_nolock();
   tmp->peercap = ast_format_cap_alloc_nolock();
   if (!tmp->cap || !tmp->jointcap || !tmp->peercap) {
      tmp->cap = ast_format_cap_destroy(tmp->cap);
      tmp->jointcap = ast_format_cap_destroy(tmp->jointcap);
      tmp->peercap = ast_format_cap_destroy(tmp->peercap);
      ast_free(tmp);
      return NULL;
   }
   memcpy(&tmp->prefs, &client->prefs, sizeof(tmp->prefs));

   if (sid) {
      ast_copy_string(tmp->sid, sid, sizeof(tmp->sid));
      ast_copy_string(tmp->them, from, sizeof(tmp->them));
   } else {
      snprintf(tmp->sid, sizeof(tmp->sid), "%08lx%08lx", ast_random(), ast_random());
      ast_copy_string(tmp->them, idroster, sizeof(tmp->them));
      tmp->initiator = 1;
   }
   ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
   tmp->rtp = ast_rtp_instance_new("asterisk", sched, &bindaddr_tmp, NULL);
   tmp->parent = client;
   if (!tmp->rtp) {
      ast_log(LOG_WARNING, "Out of RTP sessions?\n");
      ast_free(tmp);
      return NULL;
   }
   ast_copy_string(tmp->exten, "s", sizeof(tmp->exten));
   ast_mutex_init(&tmp->lock);
   ast_mutex_lock(&jinglelock);
   tmp->next = client->p;
   client->p = tmp;
   ast_mutex_unlock(&jinglelock);
   return tmp;
}

/*! \brief Start new jingle channel */
static struct ast_channel *jingle_new(struct jingle *client, struct jingle_pvt *i, int state, const char *title, const char *linkedid)
{
   struct ast_channel *tmp;
   struct ast_format_cap *what;  /* SHALLOW COPY DO NOT DESTROY */
   struct ast_format tmpfmt;
   const char *str;

   if (title)
      str = title;
   else
      str = i->them;
   tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, "", "", "", linkedid, 0, "Jingle/%s-%04lx", str, ast_random() & 0xffff);
   if (!tmp) {
      ast_log(LOG_WARNING, "Unable to allocate Jingle channel structure!\n");
      return NULL;
   }
   ast_channel_tech_set(tmp, &jingle_tech);

   /* Select our native format based on codec preference until we receive
      something from another device to the contrary. */
   if (!ast_format_cap_is_empty(i->jointcap))
      what = i->jointcap;
   else if (!(ast_format_cap_is_empty(i->cap)))
      what = i->cap;
   else
      what = global_capability;

   /* Set Frame packetization */
   if (i->rtp)
      ast_rtp_codecs_packetization_set(ast_rtp_instance_get_codecs(i->rtp), i->rtp, &i->prefs);

   ast_codec_choose(&i->prefs, what, 1, &tmpfmt);
   ast_format_cap_add(ast_channel_nativeformats(tmp), &tmpfmt);

   ast_format_cap_iter_start(i->jointcap);
   while (!(ast_format_cap_iter_next(i->jointcap, &tmpfmt))) {
      if (AST_FORMAT_GET_TYPE(tmpfmt.id) == AST_FORMAT_TYPE_VIDEO) {
         ast_format_cap_add(ast_channel_nativeformats(tmp), &tmpfmt);
      }
   }
   ast_format_cap_iter_end(i->jointcap);

   if (i->rtp) {
      ast_channel_set_fd(tmp, 0, ast_rtp_instance_fd(i->rtp, 0));
      ast_channel_set_fd(tmp, 1, ast_rtp_instance_fd(i->rtp, 1));
   }
   if (i->vrtp) {
      ast_channel_set_fd(tmp, 2, ast_rtp_instance_fd(i->vrtp, 0));
      ast_channel_set_fd(tmp, 3, ast_rtp_instance_fd(i->vrtp, 1));
   }
   if (state == AST_STATE_RING)
      ast_channel_rings_set(tmp, 1);
   ast_channel_adsicpe_set(tmp, AST_ADSI_UNAVAILABLE);


   ast_best_codec(ast_channel_nativeformats(tmp), &tmpfmt);
   ast_format_copy(ast_channel_writeformat(tmp), &tmpfmt);
   ast_format_copy(ast_channel_rawwriteformat(tmp), &tmpfmt);
   ast_format_copy(ast_channel_readformat(tmp), &tmpfmt);
   ast_format_copy(ast_channel_rawreadformat(tmp), &tmpfmt);
   ast_channel_tech_pvt_set(tmp, i);

   ast_channel_callgroup_set(tmp, client->callgroup);
   ast_channel_pickupgroup_set(tmp, client->pickupgroup);
   ast_channel_caller(tmp)->id.name.presentation = client->callingpres;
   ast_channel_caller(tmp)->id.number.presentation = client->callingpres;
   if (!ast_strlen_zero(client->accountcode))
      ast_channel_accountcode_set(tmp, client->accountcode);
   if (client->amaflags)
      ast_channel_amaflags_set(tmp, client->amaflags);
   if (!ast_strlen_zero(client->language))
      ast_channel_language_set(tmp, client->language);
   if (!ast_strlen_zero(client->musicclass))
      ast_channel_musicclass_set(tmp, client->musicclass);
   i->owner = tmp;
   ast_channel_context_set(tmp, client->context);
   ast_channel_exten_set(tmp, i->exten);
   /* Don't use ast_set_callerid() here because it will
    * generate an unnecessary NewCallerID event  */
   if (!ast_strlen_zero(i->cid_num)) {
      ast_channel_caller(tmp)->ani.number.valid = 1;
      ast_channel_caller(tmp)->ani.number.str = ast_strdup(i->cid_num);
   }
   if (!ast_strlen_zero(i->exten) && strcmp(i->exten, "s")) {
      ast_channel_dialed(tmp)->number.str = ast_strdup(i->exten);
   }
   ast_channel_priority_set(tmp, 1);
   if (i->rtp)
      ast_jb_configure(tmp, &global_jbconf);
   if (state != AST_STATE_DOWN && ast_pbx_start(tmp)) {
      ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ast_channel_name(tmp));
      ast_channel_hangupcause_set(tmp, AST_CAUSE_SWITCH_CONGESTION);
      ast_hangup(tmp);
      tmp = NULL;
   }

   return tmp;
}

static int jingle_action(struct jingle *client, struct jingle_pvt *p, const char *action)
{
   iks *iq, *jingle = NULL;
   int res = -1;

   iq = iks_new("iq");
   jingle = iks_new("jingle");
   
   if (iq) {
      iks_insert_attrib(iq, "type", "set");
      iks_insert_attrib(iq, "from", client->connection->jid->full);
      iks_insert_attrib(iq, "to", p->them);
      iks_insert_attrib(iq, "id", client->connection->mid);
      ast_aji_increment_mid(client->connection->mid);
      if (jingle) {
         iks_insert_attrib(jingle, "action", action);
         iks_insert_attrib(jingle, JINGLE_SID, p->sid);
         iks_insert_attrib(jingle, "initiator", p->initiator ? client->connection->jid->full : p->them);
         iks_insert_attrib(jingle, "xmlns", JINGLE_NS);

         iks_insert_node(iq, jingle);

         ast_aji_send(client->connection, iq);
         res = 0;
      }
   }
   
   iks_delete(jingle);
   iks_delete(iq);
   
   return res;
}

static void jingle_free_candidates(struct jingle_candidate *candidate)
{
   struct jingle_candidate *last;
   while (candidate) {
      last = candidate;
      candidate = candidate->next;
      ast_free(last);
   }
}

static void jingle_free_pvt(struct jingle *client, struct jingle_pvt *p)
{
   struct jingle_pvt *cur, *prev = NULL;
   cur = client->p;
   while (cur) {
      if (cur == p) {
         if (prev)
            prev->next = p->next;
         else
            client->p = p->next;
         break;
      }
      prev = cur;
      cur = cur->next;
   }
   if (p->ringrule)
      iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
   if (p->owner)
      ast_log(LOG_WARNING, "Uh oh, there's an owner, this is going to be messy.\n");
   if (p->rtp)
      ast_rtp_instance_destroy(p->rtp);
   if (p->vrtp)
      ast_rtp_instance_destroy(p->vrtp);
   jingle_free_candidates(p->theircandidates);
   p->cap = ast_format_cap_destroy(p->cap);
   p->jointcap = ast_format_cap_destroy(p->jointcap);
   p->peercap = ast_format_cap_destroy(p->peercap);

   ast_free(p);
}


static int jingle_newcall(struct jingle *client, ikspak *pak)
{
   struct jingle_pvt *p, *tmp = client->p;
   struct ast_channel *chan;
   int res;
   iks *codec, *content, *description;
   char *from = NULL;

   /* Make sure our new call doesn't exist yet */
   from = iks_find_attrib(pak->x,"to");
   if(!from)
      from = client->connection->jid->full;

   while (tmp) {
      if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid)) {
         ast_log(LOG_NOTICE, "Ignoring duplicate call setup on SID %s\n", tmp->sid);
         jingle_response(client, pak, "out-of-order", NULL);
         return -1;
      }
      tmp = tmp->next;
   }

   if (!strcasecmp(client->name, "guest")){
      /* the guest account is not tied to any configured XMPP client,
         let's set it now */
      if (client->connection) {
         ASTOBJ_UNREF(client->connection, ast_aji_client_destroy);
      }
      client->connection = ast_aji_get_client(from);
      if (!client->connection) {
         ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", from);
         return -1;
      }
   }

   p = jingle_alloc(client, pak->from->partial, iks_find_attrib(pak->query, JINGLE_SID));
   if (!p) {
      ast_log(LOG_WARNING, "Unable to allocate jingle structure!\n");
      return -1;
   }
   chan = jingle_new(client, p, AST_STATE_DOWN, pak->from->user, NULL);
   if (!chan) {
      jingle_free_pvt(client, p);
      return -1;
   }
   ast_mutex_lock(&p->lock);
   ast_copy_string(p->them, pak->from->full, sizeof(p->them));
   if (iks_find_attrib(pak->query, JINGLE_SID)) {
      ast_copy_string(p->sid, iks_find_attrib(pak->query, JINGLE_SID),
            sizeof(p->sid));
   }
   
   /* content points to the first <content/> tag */   
   content = iks_child(iks_child(pak->x));
   while (content) {
      description = iks_find_with_attrib(content, "description", "xmlns", JINGLE_AUDIO_RTP_NS);
      if (description) {
         /* audio content found */
         codec = iks_child(iks_child(content));
              ast_copy_string(p->audio_content_name, iks_find_attrib(content, "name"), sizeof(p->audio_content_name));

         while (codec) {
            ast_rtp_codecs_payloads_set_m_type(ast_rtp_instance_get_codecs(p->rtp), p->rtp, atoi(iks_find_attrib(codec, "id")));
            ast_rtp_codecs_payloads_set_rtpmap_type(ast_rtp_instance_get_codecs(p->rtp), p->rtp, atoi(iks_find_attrib(codec, "id")), "audio", iks_find_attrib(codec, "name"), 0);
            codec = iks_next(codec);
         }
      }
      
      description = NULL;
      codec = NULL;

      description = iks_find_with_attrib(content, "description", "xmlns", JINGLE_VIDEO_RTP_NS);
      if (description) {
         /* video content found */
         codec = iks_child(iks_child(content));
              ast_copy_string(p->video_content_name, iks_find_attrib(content, "name"), sizeof(p->video_content_name));

         while (codec) {
            ast_rtp_codecs_payloads_set_m_type(ast_rtp_instance_get_codecs(p->rtp), p->rtp, atoi(iks_find_attrib(codec, "id")));
            ast_rtp_codecs_payloads_set_rtpmap_type(ast_rtp_instance_get_codecs(p->rtp), p->rtp, atoi(iks_find_attrib(codec, "id")), "audio", iks_find_attrib(codec, "name"), 0);
            codec = iks_next(codec);
         }
      }
      
      content = iks_next(content);
   }

   ast_mutex_unlock(&p->lock);
   ast_setstate(chan, AST_STATE_RING);
   res = ast_pbx_start(chan);
   
   switch (res) {
   case AST_PBX_FAILED:
      ast_log(LOG_WARNING, "Failed to start PBX :(\n");
      jingle_response(client, pak, "service-unavailable", NULL);
      break;
   case AST_PBX_CALL_LIMIT:
      ast_log(LOG_WARNING, "Failed to start PBX (call limit reached) \n");
      jingle_response(client, pak, "service-unavailable", NULL);
      break;
   case AST_PBX_SUCCESS:
      jingle_response(client, pak, NULL, NULL);
      jingle_create_candidates(client, p,
                iks_find_attrib(pak->query, JINGLE_SID),
                iks_find_attrib(pak->x, "from"));
      /* nothing to do */
      break;
   }

   return 1;
}

static int jingle_update_stun(struct jingle *client, struct jingle_pvt *p)
{
   struct jingle_candidate *tmp;
   struct hostent *hp;
   struct ast_hostent ahp;
   struct sockaddr_in sin;
   struct ast_sockaddr sin_tmp;

   if (time(NULL) == p->laststun)
      return 0;

   tmp = p->theircandidates;
   p->laststun = time(NULL);
   while (tmp) {
      char username[256];
      hp = ast_gethostbyname(tmp->ip, &ahp);
      sin.sin_family = AF_INET;
      memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr));
      sin.sin_port = htons(tmp->port);
      snprintf(username, sizeof(username), "%s:%s", tmp->ufrag, p->ourcandidates->ufrag);

      ast_sockaddr_from_sin(&sin_tmp, &sin);
      ast_rtp_instance_stun_request(p->rtp, &sin_tmp, username);
      tmp = tmp->next;
   }
   return 1;
}

static int jingle_add_candidate(struct jingle *client, ikspak *pak)
{
   struct jingle_pvt *p = NULL, *tmp = NULL;
   struct aji_client *c = client->connection;
   struct jingle_candidate *newcandidate = NULL;
   iks *traversenodes = NULL, *receipt = NULL;

   for (tmp = client->p; tmp; tmp = tmp->next) {
      if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid)) {
         p = tmp;
         break;
      }
   }

   if (!p)
      return -1;

   traversenodes = pak->query;
   while(traversenodes) {
      if(!strcasecmp(iks_name(traversenodes), "jingle")) {
         traversenodes = iks_child(traversenodes);
         continue;
      }
      if(!strcasecmp(iks_name(traversenodes), "content")) {
         traversenodes = iks_child(traversenodes);
         continue;
      }
      if(!strcasecmp(iks_name(traversenodes), "transport")) {
         traversenodes = iks_child(traversenodes);
         continue;
      }

      if(!strcasecmp(iks_name(traversenodes), "candidate")) {
         newcandidate = ast_calloc(1, sizeof(*newcandidate));
         if (!newcandidate)
            return 0;
         ast_copy_string(newcandidate->ip, iks_find_attrib(traversenodes, "ip"), sizeof(newcandidate->ip));
         newcandidate->port = atoi(iks_find_attrib(traversenodes, "port"));
         ast_copy_string(newcandidate->password, iks_find_attrib(traversenodes, "pwd"), sizeof(newcandidate->password));
         if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "udp"))
            newcandidate->protocol = AJI_PROTOCOL_UDP;
         else if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "ssltcp"))
            newcandidate->protocol = AJI_PROTOCOL_SSLTCP;
         
         if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "host"))
            newcandidate->type = AJI_CONNECT_HOST;
         else if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "prflx"))
            newcandidate->type = AJI_CONNECT_PRFLX;
         else if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "relay"))
            newcandidate->type = AJI_CONNECT_RELAY;
         else if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "srflx"))
            newcandidate->type = AJI_CONNECT_SRFLX;

         newcandidate->network = atoi(iks_find_attrib(traversenodes, "network"));
         newcandidate->generation = atoi(iks_find_attrib(traversenodes, "generation"));
         newcandidate->next = NULL;
      
         newcandidate->next = p->theircandidates;
         p->theircandidates = newcandidate;
         p->laststun = 0;
         jingle_update_stun(p->parent, p);
         newcandidate = NULL;
      }
      traversenodes = iks_next(traversenodes);
   }
   
   receipt = iks_new("iq");
   iks_insert_attrib(receipt, "type", "result");
   iks_insert_attrib(receipt, "from", c->jid->full);
   iks_insert_attrib(receipt, "to", iks_find_attrib(pak->x, "from"));
   iks_insert_attrib(receipt, "id", iks_find_attrib(pak->x, "id"));
   ast_aji_send(c, receipt);

   iks_delete(receipt);

   return 1;
}

static struct ast_frame *jingle_rtp_read(struct ast_channel *ast, struct jingle_pvt *p)
{
   struct ast_frame *f;

   if (!p->rtp)
      return &ast_null_frame;
   f = ast_rtp_instance_read(p->rtp, 0);
   jingle_update_stun(p->parent, p);
   if (p->owner) {
      /* We already hold the channel lock */
      if (f->frametype == AST_FRAME_VOICE) {
         if (!(ast_format_cap_iscompatible(ast_channel_nativeformats(p->owner), &f->subclass.format))) {
            ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(&f->subclass.format));
            ast_format_cap_remove_bytype(ast_channel_nativeformats(p->owner), AST_FORMAT_TYPE_AUDIO);
            ast_format_cap_add(ast_channel_nativeformats(p->owner), &f->subclass.format);
            ast_set_read_format(p->owner, ast_channel_readformat(p->owner));
            ast_set_write_format(p->owner, ast_channel_writeformat(p->owner));
         }
/*       if ((ast_test_flag(p, SIP_DTMF) == SIP_DTMF_INBAND) && p->vad) {
            f = ast_dsp_process(p->owner, p->vad, f);
            if (f && (f->frametype == AST_FRAME_DTMF))
               ast_debug(1, "* Detected inband DTMF '%c'\n", f->subclass.codec);
              } */
      }
   }
   return f;
}

static struct ast_frame *jingle_read(struct ast_channel *ast)
{
   struct ast_frame *fr;
   struct jingle_pvt *p = ast_channel_tech_pvt(ast);

   ast_mutex_lock(&p->lock);
   fr = jingle_rtp_read(ast, p);
   ast_mutex_unlock(&p->lock);
   return fr;
}

/*! \brief Send frame to media channel (rtp) */
static int jingle_write(struct ast_channel *ast, struct ast_frame *frame)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(ast);
   int res = 0;
   char buf[256];

   switch (frame->frametype) {
   case AST_FRAME_VOICE:
      if (!(ast_format_cap_iscompatible(ast_channel_nativeformats(ast), &frame->subclass.format))) {
         ast_log(LOG_WARNING,
               "Asked to transmit frame type %s, while native formats is %s (read/write = %s/%s)\n",
               ast_getformatname(&frame->subclass.format),
               ast_getformatname_multiple(buf, sizeof(buf), ast_channel_nativeformats(ast)),
               ast_getformatname(ast_channel_readformat(ast)),
               ast_getformatname(ast_channel_writeformat(ast)));
         return 0;
      }
      if (p) {
         ast_mutex_lock(&p->lock);
         if (p->rtp) {
            res = ast_rtp_instance_write(p->rtp, frame);
         }
         ast_mutex_unlock(&p->lock);
      }
      break;
   case AST_FRAME_VIDEO:
      if (p) {
         ast_mutex_lock(&p->lock);
         if (p->vrtp) {
            res = ast_rtp_instance_write(p->vrtp, frame);
         }
         ast_mutex_unlock(&p->lock);
      }
      break;
   case AST_FRAME_IMAGE:
      return 0;
      break;
   default:
      ast_log(LOG_WARNING, "Can't send %d type frames with Jingle write\n",
            frame->frametype);
      return 0;
   }

   return res;
}

static int jingle_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(newchan);
   ast_mutex_lock(&p->lock);

   if ((p->owner != oldchan)) {
      ast_mutex_unlock(&p->lock);
      return -1;
   }
   if (p->owner == oldchan)
      p->owner = newchan;
   ast_mutex_unlock(&p->lock);
   return 0;
}

static int jingle_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
{
   int res = 0;

   switch (condition) {
   case AST_CONTROL_HOLD:
      ast_moh_start(ast, data, NULL);
      break;
   case AST_CONTROL_UNHOLD:
      ast_moh_stop(ast);
      break;
   default:
      ast_log(LOG_NOTICE, "Don't know how to indicate condition '%d'\n", condition);
      /* fallthrough */
   case AST_CONTROL_PVT_CAUSE_CODE:
      res = -1;
   }

   return res;
}

static int jingle_sendtext(struct ast_channel *chan, const char *text)
{
   int res = 0;
   struct aji_client *client = NULL;
   struct jingle_pvt *p = ast_channel_tech_pvt(chan);


   if (!p->parent) {
      ast_log(LOG_ERROR, "Parent channel not found\n");
      return -1;
   }
   if (!p->parent->connection) {
      ast_log(LOG_ERROR, "XMPP client not found\n");
      return -1;
   }
   client = p->parent->connection;
   res = ast_aji_send_chat(client, p->them, text);
   return res;
}

static int jingle_digit(struct ast_channel *ast, char digit, unsigned int duration)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(ast);
   struct jingle *client = p->parent;
   iks *iq, *jingle, *dtmf;
   char buffer[2] = {digit, '\0'};
   iq = iks_new("iq");
   jingle = iks_new("jingle");
   dtmf = iks_new("dtmf");
   if(!iq || !jingle || !dtmf) {
      iks_delete(iq);
      iks_delete(jingle);
      iks_delete(dtmf);
      ast_log(LOG_ERROR, "Did not send dtmf do to memory issue\n");
      return -1;
   }

   iks_insert_attrib(iq, "type", "set");
   iks_insert_attrib(iq, "to", p->them);
   iks_insert_attrib(iq, "from", client->connection->jid->full);
   iks_insert_attrib(iq, "id", client->connection->mid);
   ast_aji_increment_mid(client->connection->mid);
   iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
   iks_insert_attrib(jingle, "action", "session-info");
   iks_insert_attrib(jingle, "initiator", p->initiator ? client->connection->jid->full : p->them);
   iks_insert_attrib(jingle, "sid", p->sid);
   iks_insert_attrib(dtmf, "xmlns", JINGLE_DTMF_NS);
   iks_insert_attrib(dtmf, "code", buffer);
   iks_insert_node(iq, jingle);
   iks_insert_node(jingle, dtmf);

   ast_mutex_lock(&p->lock);
   if (ast_channel_dtmff(ast)->frametype == AST_FRAME_DTMF_BEGIN || duration == 0) {
      iks_insert_attrib(dtmf, "action", "button-down");
   } else if (ast_channel_dtmff(ast)->frametype == AST_FRAME_DTMF_END || duration != 0) {
      iks_insert_attrib(dtmf, "action", "button-up");
   }
   ast_aji_send(client->connection, iq);

   iks_delete(iq);
   iks_delete(jingle);
   iks_delete(dtmf);
   ast_mutex_unlock(&p->lock);
   return 0;
}

static int jingle_digit_begin(struct ast_channel *chan, char digit)
{
   return jingle_digit(chan, digit, 0);
}

static int jingle_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
{
   return jingle_digit(ast, digit, duration);
}

static int jingle_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
{
   ast_log(LOG_NOTICE, "XXX Implement jingle sendhtml XXX\n");

   return -1;
}
static int jingle_transmit_invite(struct jingle_pvt *p)
{
   struct jingle *aux = NULL;
   struct aji_client *client = NULL;
   iks *iq, *jingle, *content, *description, *transport;
   iks *payload_eg711u, *payload_pcmu;

   aux = p->parent;
   client = aux->connection;
   iq = iks_new("iq");
   jingle = iks_new(JINGLE_NODE);
   content = iks_new("content");
   description = iks_new("description");
   transport = iks_new("transport");
   payload_pcmu = iks_new("payload-type");
   payload_eg711u = iks_new("payload-type");

   ast_copy_string(p->audio_content_name, "asterisk-audio-content", sizeof(p->audio_content_name));

   iks_insert_attrib(iq, "type", "set");
   iks_insert_attrib(iq, "to", p->them);
   iks_insert_attrib(iq, "from", client->jid->full);
   iks_insert_attrib(iq, "id", client->mid);
   ast_aji_increment_mid(client->mid);
   iks_insert_attrib(jingle, "action", JINGLE_INITIATE);
   iks_insert_attrib(jingle, JINGLE_SID, p->sid);
   iks_insert_attrib(jingle, "initiator", client->jid->full);
   iks_insert_attrib(jingle, "xmlns", JINGLE_NS);

   /* For now, we only send one audio based content */
   iks_insert_attrib(content, "creator", "initiator");
   iks_insert_attrib(content, "name", p->audio_content_name);
   iks_insert_attrib(content, "profile", "RTP/AVP");
   iks_insert_attrib(description, "xmlns", JINGLE_AUDIO_RTP_NS);
   iks_insert_attrib(transport, "xmlns", JINGLE_ICE_UDP_NS);
   iks_insert_attrib(payload_pcmu, "id", "0");
   iks_insert_attrib(payload_pcmu, "name", "PCMU");
   iks_insert_attrib(payload_eg711u, "id", "100");
   iks_insert_attrib(payload_eg711u, "name", "EG711U");
   iks_insert_node(description, payload_pcmu);
   iks_insert_node(description, payload_eg711u);
   iks_insert_node(content, description);
   iks_insert_node(content, transport);
   iks_insert_node(jingle, content);
   iks_insert_node(iq, jingle);

   ast_aji_send(client, iq);

   iks_delete(iq);
   iks_delete(jingle);
   iks_delete(content);
   iks_delete(description);
   iks_delete(transport);
   iks_delete(payload_eg711u);
   iks_delete(payload_pcmu);
   return 0;
}

/* Not in use right now.
static int jingle_auto_congest(void *nothing)
{
   struct jingle_pvt *p = nothing;

   ast_mutex_lock(&p->lock);
   if (p->owner) {
      if (!ast_channel_trylock(p->owner)) {
         ast_log(LOG_NOTICE, "Auto-congesting %s\n", p->owner->name);
         ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
         ast_channel_unlock(p->owner);
      }
   }
   ast_mutex_unlock(&p->lock);
   return 0;
}
*/

/*! \brief Initiate new call, part of PBX interface 
 *    dest is the dial string */
static int jingle_call(struct ast_channel *ast, const char *dest, int timeout)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(ast);

   if ((ast_channel_state(ast) != AST_STATE_DOWN) && (ast_channel_state(ast) != AST_STATE_RESERVED)) {
      ast_log(LOG_WARNING, "jingle_call called on %s, neither down nor reserved\n", ast_channel_name(ast));
      return -1;
   }

   ast_setstate(ast, AST_STATE_RING);
   ast_format_cap_copy(p->jointcap, p->cap);
   if (!p->ringrule) {
      ast_copy_string(p->ring, p->parent->connection->mid, sizeof(p->ring));
      p->ringrule = iks_filter_add_rule(p->parent->connection->f, jingle_ringing_ack, p,
                     IKS_RULE_ID, p->ring, IKS_RULE_DONE);
   } else
      ast_log(LOG_WARNING, "Whoa, already have a ring rule!\n");

   jingle_transmit_invite(p);
   jingle_create_candidates(p->parent, p, p->sid, p->them);

   return 0;
}

/*! \brief Hangup a call through the jingle proxy channel */
static int jingle_hangup(struct ast_channel *ast)
{
   struct jingle_pvt *p = ast_channel_tech_pvt(ast);
   struct jingle *client;

   ast_mutex_lock(&p->lock);
   client = p->parent;
   p->owner = NULL;
   ast_channel_tech_pvt_set(ast, NULL);
   if (!p->alreadygone)
      jingle_action(client, p, JINGLE_TERMINATE);
   ast_mutex_unlock(&p->lock);

   jingle_free_pvt(client, p);

   return 0;
}

/*! \brief Part of PBX interface */
static struct ast_channel *jingle_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, const char *data, int *cause)
{
   struct jingle_pvt *p = NULL;
   struct jingle *client = NULL;
   char *sender = NULL, *to = NULL, *s = NULL;
   struct ast_channel *chan = NULL;

   if (data) {
      s = ast_strdupa(data);
      sender = strsep(&s, "/");
      if (sender && (sender[0] != '\0'))
         to = strsep(&s, "/");
      if (!to) {
         ast_log(LOG_ERROR, "Bad arguments in Jingle Dialstring: %s\n", data);
         return NULL;
      }
      if (!to) {
         ast_log(LOG_ERROR, "Bad arguments in Jingle Dialstring: %s\n", (char*) data);
         return NULL;
      }
   }

   client = find_jingle(to, sender);
   if (!client) {
      ast_log(LOG_WARNING, "Could not find recipient.\n");
      return NULL;
   }
   if (!strcasecmp(client->name, "guest")){
      /* the guest account is not tied to any configured XMPP client,
         let's set it now */
      if (client->connection) {
         ASTOBJ_UNREF(client->connection, ast_aji_client_destroy);
      }
      client->connection = ast_aji_get_client(sender);
      if (!client->connection) {
         ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", sender);
         return NULL;
      }
   }
       
   ASTOBJ_WRLOCK(client);
   p = jingle_alloc(client, to, NULL);
   if (p)
      chan = jingle_new(client, p, AST_STATE_DOWN, to, requestor ? ast_channel_linkedid(requestor) : NULL);
   ASTOBJ_UNLOCK(client);

   return chan;
}

/*! \brief CLI command "jingle show channels" */
static char *jingle_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
#define FORMAT  "%-30.30s  %-30.30s  %-15.15s  %-5.5s %-5.5s \n"
   struct jingle_pvt *p;
   struct ast_channel *chan;
   int numchans = 0;
   char them[AJI_MAX_JIDLEN];
   char *jid = NULL;
   char *resource = NULL;

   switch (cmd) {
   case CLI_INIT:
      e->command = "jingle show channels";
      e->usage =
         "Usage: jingle show channels\n"
         "       Shows current state of the Jingle channels.\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   if (a->argc != 3)
      return CLI_SHOWUSAGE;

   ast_mutex_lock(&jinglelock);
   ast_cli(a->fd, FORMAT, "Channel", "Jabber ID", "Resource", "Read", "Write");
   ASTOBJ_CONTAINER_TRAVERSE(&jingle_list, 1, {
      ASTOBJ_WRLOCK(iterator);
      p = iterator->p;
      while(p) {
         chan = p->owner;
         ast_copy_string(them, p->them, sizeof(them));
         jid = them;
         resource = strchr(them, '/');
         if (!resource)
            resource = "None";
         else {
            *resource = '\0';
            resource ++;
         }
         if (chan)
            ast_cli(a->fd, FORMAT, 
               ast_channel_name(chan),
               jid,
               resource,
               ast_getformatname(ast_channel_readformat(chan)),
               ast_getformatname(ast_channel_writeformat(chan))
               );
         else 
            ast_log(LOG_WARNING, "No available channel\n");
         numchans ++;
         p = p->next;
      }
      ASTOBJ_UNLOCK(iterator);
   });

   ast_mutex_unlock(&jinglelock);

   ast_cli(a->fd, "%d active jingle channel%s\n", numchans, (numchans != 1) ? "s" : "");
   return CLI_SUCCESS;
#undef FORMAT
}

/*! \brief CLI command "jingle reload" */
static char *jingle_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   switch (cmd) {
   case CLI_INIT:
      e->command = "jingle reload";
      e->usage =
         "Usage: jingle reload\n"
         "       Reload jingle channel driver.\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }  
   
   return CLI_SUCCESS;
}

static int jingle_parser(void *data, ikspak *pak)
{
   struct jingle *client = ASTOBJ_REF((struct jingle *) data);
   ast_log(LOG_NOTICE, "Filter matched\n");

   if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_INITIATE)) {
      /* New call */
      jingle_newcall(client, pak);
   } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_NEGOTIATE)) {
      ast_debug(3, "About to add candidate!\n");
      jingle_add_candidate(client, pak);
      ast_debug(3, "Candidate Added!\n");
   } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_ACCEPT)) {
      jingle_is_answered(client, pak);
   } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_INFO)) {
      jingle_handle_dtmf(client, pak);
   } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_TERMINATE)) {
      jingle_hangup_farend(client, pak);
   } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", "reject")) {
      jingle_hangup_farend(client, pak);
   }
   ASTOBJ_UNREF(client, jingle_member_destroy);
   return IKS_FILTER_EAT;
}
/* Not using this anymore probably take out soon 
static struct jingle_candidate *jingle_create_candidate(char *args)
{
   char *name, *type, *preference, *protocol;
   struct jingle_candidate *res;
   res = ast_calloc(1, sizeof(*res));
   if (args)
      name = args;
   if ((args = strchr(args, ','))) {
      *args = '\0';
      args++;
      preference = args;
   }
   if ((args = strchr(args, ','))) {
      *args = '\0';
      args++;
      protocol = args;
   }
   if ((args = strchr(args, ','))) {
      *args = '\0';
      args++;
      type = args;
   }
   if (name)
      ast_copy_string(res->name, name, sizeof(res->name));
   if (preference) {
      res->preference = atof(preference);
   }
   if (protocol) {
      if (!strcasecmp("udp", protocol))
         res->protocol = AJI_PROTOCOL_UDP;
      if (!strcasecmp("ssltcp", protocol))
         res->protocol = AJI_PROTOCOL_SSLTCP;
   }
   if (type) {
      if (!strcasecmp("host", type))
         res->type = AJI_CONNECT_HOST;
      if (!strcasecmp("prflx", type))
         res->type = AJI_CONNECT_PRFLX;
      if (!strcasecmp("relay", type))
         res->type = AJI_CONNECT_RELAY;
      if (!strcasecmp("srflx", type))
         res->type = AJI_CONNECT_SRFLX;
   }

   return res;
}
*/

static int jingle_create_member(char *label, struct ast_variable *var, int allowguest,
                        struct ast_codec_pref prefs, char *context,
                        struct jingle *member)
{
   struct aji_client *client;

   if (!member)
      ast_log(LOG_WARNING, "Out of memory.\n");

   ast_copy_string(member->name, label, sizeof(member->name));
   ast_copy_string(member->user, label, sizeof(member->user));
   ast_copy_string(member->context, context, sizeof(member->context));
   member->allowguest = allowguest;
   member->prefs = prefs;
   while (var) {
#if 0
      struct jingle_candidate *candidate = NULL;
#endif
      if (!strcasecmp(var->name, "username"))
         ast_copy_string(member->user, var->value, sizeof(member->user));
      else if (!strcasecmp(var->name, "disallow"))
         ast_parse_allow_disallow(&member->prefs, member->cap, var->value, 0);
      else if (!strcasecmp(var->name, "allow"))
         ast_parse_allow_disallow(&member->prefs, member->cap, var->value, 1);
      else if (!strcasecmp(var->name, "context"))
         ast_copy_string(member->context, var->value, sizeof(member->context));
#if 0
      else if (!strcasecmp(var->name, "candidate")) {
         candidate = jingle_create_candidate(var->value);
         if (candidate) {
            candidate->next = member->ourcandidates;
            member->ourcandidates = candidate;
         }
      }
#endif
      else if (!strcasecmp(var->name, "connection")) {
         if ((client = ast_aji_get_client(var->value))) {
            member->connection = client;
            iks_filter_add_rule(client->f, jingle_parser, member,
                      IKS_RULE_TYPE, IKS_PAK_IQ,
                      IKS_RULE_FROM_PARTIAL, member->user,
                      IKS_RULE_NS, JINGLE_NS,
                      IKS_RULE_DONE);
         } else {
            ast_log(LOG_ERROR, "connection referenced not found!\n");
            return 0;
         }
      }
      var = var->next;
   }
   if (member->connection && member->user)
      member->buddy = ASTOBJ_CONTAINER_FIND(&member->connection->buddies, member->user);
   else {
      ast_log(LOG_ERROR, "No Connection or Username!\n");
   }
   return 1;
}

static int jingle_load_config(void)
{
   char *cat = NULL;
   struct ast_config *cfg = NULL;
   char context[100];
   int allowguest = 1;
   struct ast_variable *var;
   struct jingle *member;
   struct hostent *hp;
   struct ast_hostent ahp;
   struct ast_codec_pref prefs;
   struct aji_client_container *clients;
   struct jingle_candidate *global_candidates = NULL;
   struct ast_flags config_flags = { 0 };

   cfg = ast_config_load(JINGLE_CONFIG, config_flags);
   if (!cfg || cfg == CONFIG_STATUS_FILEINVALID) {
      return 0;
   }

   /* Copy the default jb config over global_jbconf */
   memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));

   cat = ast_category_browse(cfg, NULL);
   for (var = ast_variable_browse(cfg, "general"); var; var = var->next) {
      /* handle jb conf */
      if (!ast_jb_read_conf(&global_jbconf, var->name, var->value))
         continue;

      if (!strcasecmp(var->name, "allowguest"))
         allowguest =
            (ast_true(ast_variable_retrieve(cfg, "general", "allowguest"))) ? 1 : 0;
      else if (!strcasecmp(var->name, "disallow"))
         ast_parse_allow_disallow(&prefs, global_capability, var->value, 0);
      else if (!strcasecmp(var->name, "allow"))
         ast_parse_allow_disallow(&prefs, global_capability, var->value, 1);
      else if (!strcasecmp(var->name, "context"))
         ast_copy_string(context, var->value, sizeof(context));
      else if (!strcasecmp(var->name, "externip"))
         ast_copy_string(externip, var->value, sizeof(externip));
      else if (!strcasecmp(var->name, "bindaddr")) {
         if (!(hp = ast_gethostbyname(var->value, &ahp))) {
            ast_log(LOG_WARNING, "Invalid address: %s\n", var->value);
         } else {
            memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr));
         }
      }
/*  Idea to allow for custom candidates  */
/*
      else if (!strcasecmp(var->name, "candidate")) {
         candidate = jingle_create_candidate(var->value);
         if (candidate) {
            candidate->next = global_candidates;
            global_candidates = candidate;
         }
      }
*/
   }
   while (cat) {
      if (strcasecmp(cat, "general")) {
         var = ast_variable_browse(cfg, cat);
         member = ast_calloc(1, sizeof(*member));
         ASTOBJ_INIT(member);
         ASTOBJ_WRLOCK(member);
         member->cap = ast_format_cap_alloc_nolock();
         if (!strcasecmp(cat, "guest")) {
            ast_copy_string(member->name, "guest", sizeof(member->name));
            ast_copy_string(member->user, "guest", sizeof(member->user));
            ast_copy_string(member->context, context, sizeof(member->context));
            member->allowguest = allowguest;
            member->prefs = prefs;
            while (var) {
               if (!strcasecmp(var->name, "disallow"))
                  ast_parse_allow_disallow(&member->prefs, member->cap,
                                     var->value, 0);
               else if (!strcasecmp(var->name, "allow"))
                  ast_parse_allow_disallow(&member->prefs, member->cap,
                                     var->value, 1);
               else if (!strcasecmp(var->name, "context"))
                  ast_copy_string(member->context, var->value,
                              sizeof(member->context));
               else if (!strcasecmp(var->name, "parkinglot"))
                  ast_copy_string(member->parkinglot, var->value,
                              sizeof(member->parkinglot));
/*  Idea to allow for custom candidates  */
/*
               else if (!strcasecmp(var->name, "candidate")) {
                  candidate = jingle_create_candidate(var->value);
                  if (candidate) {
                     candidate->next = member->ourcandidates;
                     member->ourcandidates = candidate;
                  }
               }
*/
               var = var->next;
            }
            ASTOBJ_UNLOCK(member);
            clients = ast_aji_get_clients();
            if (clients) {
               ASTOBJ_CONTAINER_TRAVERSE(clients, 1, {
                  ASTOBJ_WRLOCK(iterator);
                  ASTOBJ_WRLOCK(member);
                  if (member->connection) {
                     ASTOBJ_UNREF(member->connection, ast_aji_client_destroy);
                  }
                  member->connection = NULL;
                  iks_filter_add_rule(iterator->f, jingle_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, JINGLE_NS, IKS_RULE_DONE);
                  iks_filter_add_rule(iterator->f, jingle_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, JINGLE_DTMF_NS, IKS_RULE_DONE);
                  ASTOBJ_UNLOCK(member);
                  ASTOBJ_UNLOCK(iterator);
               });
               ASTOBJ_CONTAINER_LINK(&jingle_list, member);
            } else {
               ASTOBJ_UNLOCK(member);
               ASTOBJ_UNREF(member, jingle_member_destroy);
            }
         } else {
            ASTOBJ_UNLOCK(member);
            if (jingle_create_member(cat, var, allowguest, prefs, context, member))
               ASTOBJ_CONTAINER_LINK(&jingle_list, member);
            ASTOBJ_UNREF(member, jingle_member_destroy);
         }
      }
      cat = ast_category_browse(cfg, cat);
   }
   ast_config_destroy(cfg);
   jingle_free_candidates(global_candidates);
   return 1;
}

/*! \brief Load module into PBX, register channel */
static int load_module(void)
{
   struct ast_sockaddr ourip_tmp;
   struct ast_sockaddr bindaddr_tmp;
   struct ast_format tmpfmt;

   char *jabber_loaded = ast_module_helper("", "res_jabber.so", 0, 0, 0, 0);

   if (!(jingle_tech.capabilities = ast_format_cap_alloc())) {
      return AST_MODULE_LOAD_DECLINE;
   }

   ast_format_cap_add_all_by_type(jingle_tech.capabilities, AST_FORMAT_TYPE_AUDIO);
   if (!(global_capability = ast_format_cap_alloc())) {
      return AST_MODULE_LOAD_DECLINE;
   }
   ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ULAW, 0));
   ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_GSM, 0));
   ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ALAW, 0));
   ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_H263, 0));

   free(jabber_loaded);
   if (!jabber_loaded) {
      /* Dependency module has a different name, if embedded */
      jabber_loaded = ast_module_helper("", "res_jabber", 0, 0, 0, 0);
      free(jabber_loaded);
      if (!jabber_loaded) {
         ast_log(LOG_ERROR, "chan_jingle.so depends upon res_jabber.so\n");
         return AST_MODULE_LOAD_DECLINE;
      }
   }

   ASTOBJ_CONTAINER_INIT(&jingle_list);
   if (!jingle_load_config()) {
      ast_log(LOG_ERROR, "Unable to read config file %s. Not loading module.\n", JINGLE_CONFIG);
      return AST_MODULE_LOAD_DECLINE;
   }

   sched = ast_sched_context_create();
   if (!sched) {
      ast_log(LOG_WARNING, "Unable to create schedule context\n");
   }

   io = io_context_create();
   if (!io) {
      ast_log(LOG_WARNING, "Unable to create I/O context\n");
   }

   bindaddr.sin_family = AF_INET;
   ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
   if (ast_find_ourip(&ourip_tmp, &bindaddr_tmp, AF_INET)) {
      ast_log(LOG_WARNING, "Unable to get own IP address, Jingle disabled\n");
      return 0;
   }
   __ourip.s_addr = htonl(ast_sockaddr_ipv4(&ourip_tmp));

   ast_rtp_glue_register(&jingle_rtp_glue);
   ast_cli_register_multiple(jingle_cli, ARRAY_LEN(jingle_cli));
   /* Make sure we can register our channel type */
   if (ast_channel_register(&jingle_tech)) {
      ast_log(LOG_ERROR, "Unable to register channel class %s\n", channel_type);
      return -1;
   }
   return 0;
}

/*! \brief Reload module */
static int reload(void)
{
   return 0;
}

/*! \brief Unload the jingle channel from Asterisk */
static int unload_module(void)
{
   struct jingle_pvt *privates = NULL;
   ast_cli_unregister_multiple(jingle_cli, ARRAY_LEN(jingle_cli));
   /* First, take us out of the channel loop */
   ast_channel_unregister(&jingle_tech);
   ast_rtp_glue_unregister(&jingle_rtp_glue);

   if (!ast_mutex_lock(&jinglelock)) {
      /* Hangup all interfaces if they have an owner */
      ASTOBJ_CONTAINER_TRAVERSE(&jingle_list, 1, {
         ASTOBJ_WRLOCK(iterator);
         privates = iterator->p;
         while(privates) {
            if (privates->owner)
               ast_softhangup(privates->owner, AST_SOFTHANGUP_APPUNLOAD);
            privates = privates->next;
         }
         iterator->p = NULL;
         ASTOBJ_UNLOCK(iterator);
      });
      ast_mutex_unlock(&jinglelock);
   } else {
      ast_log(LOG_WARNING, "Unable to lock the monitor\n");
      return -1;
   }
   ASTOBJ_CONTAINER_DESTROYALL(&jingle_list, jingle_member_destroy);
   ASTOBJ_CONTAINER_DESTROY(&jingle_list);

   global_capability = ast_format_cap_destroy(global_capability);
   return 0;
}

AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Jingle Channel Driver",
      .load = load_module,
      .unload = unload_module,
      .reload = reload,
      .load_pri = AST_MODPRI_CHANNEL_DRIVER,
          );