Thu Apr 28 2011 17:15:18

Asterisk developer's documentation


chan_jingle.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2005, Digium, Inc.
00005  *
00006  * Matt O'Gorman <mogorman@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \author Matt O'Gorman <mogorman@digium.com>
00022  *
00023  * \brief Jingle Channel Driver
00024  *
00025  * \extref Iksemel http://iksemel.jabberstudio.org/
00026  * 
00027  * \ingroup channel_drivers
00028  */
00029 
00030 /*** MODULEINFO
00031    <depend>iksemel</depend>
00032    <depend>res_jabber</depend>
00033    <use>openssl</use>
00034  ***/
00035 
00036 #include "asterisk.h"
00037 
00038 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 249895 $")
00039 
00040 #include <sys/socket.h>
00041 #include <fcntl.h>
00042 #include <netdb.h>
00043 #include <netinet/in.h>
00044 #include <arpa/inet.h>
00045 #include <sys/signal.h>
00046 #include <iksemel.h>
00047 #include <pthread.h>
00048 
00049 #include "asterisk/lock.h"
00050 #include "asterisk/channel.h"
00051 #include "asterisk/config.h"
00052 #include "asterisk/module.h"
00053 #include "asterisk/pbx.h"
00054 #include "asterisk/sched.h"
00055 #include "asterisk/io.h"
00056 #include "asterisk/rtp.h"
00057 #include "asterisk/acl.h"
00058 #include "asterisk/callerid.h"
00059 #include "asterisk/file.h"
00060 #include "asterisk/cli.h"
00061 #include "asterisk/app.h"
00062 #include "asterisk/musiconhold.h"
00063 #include "asterisk/manager.h"
00064 #include "asterisk/stringfields.h"
00065 #include "asterisk/utils.h"
00066 #include "asterisk/causes.h"
00067 #include "asterisk/astobj.h"
00068 #include "asterisk/abstract_jb.h"
00069 #include "asterisk/jabber.h"
00070 #include "asterisk/jingle.h"
00071 
00072 #define JINGLE_CONFIG "jingle.conf"
00073 
00074 /*! Global jitterbuffer configuration - by default, jb is disabled */
00075 static struct ast_jb_conf default_jbconf =
00076 {
00077    .flags = 0,
00078    .max_size = -1,
00079    .resync_threshold = -1,
00080    .impl = "",
00081    .target_extra = -1,
00082 };
00083 static struct ast_jb_conf global_jbconf;
00084 
00085 enum jingle_protocol {
00086    AJI_PROTOCOL_UDP,
00087    AJI_PROTOCOL_SSLTCP,
00088 };
00089 
00090 enum jingle_connect_type {
00091    AJI_CONNECT_HOST,
00092    AJI_CONNECT_PRFLX,
00093    AJI_CONNECT_RELAY,
00094    AJI_CONNECT_SRFLX,
00095 };
00096 
00097 struct jingle_pvt {
00098    ast_mutex_t lock;                /*!< Channel private lock */
00099    time_t laststun;
00100    struct jingle *parent;           /*!< Parent client */
00101    char sid[100];
00102    char them[AJI_MAX_JIDLEN];
00103    char ring[10];                   /*!< Message ID of ring */
00104    iksrule *ringrule;               /*!< Rule for matching RING request */
00105    int initiator;                   /*!< If we're the initiator */
00106    int alreadygone;
00107    int capability;
00108    struct ast_codec_pref prefs;
00109    struct jingle_candidate *theircandidates;
00110    struct jingle_candidate *ourcandidates;
00111    char cid_num[80];                /*!< Caller ID num */
00112    char cid_name[80];               /*!< Caller ID name */
00113    char exten[80];                  /*!< Called extension */
00114    struct ast_channel *owner;       /*!< Master Channel */
00115    char audio_content_name[100];    /*!< name attribute of content tag */
00116    struct ast_rtp *rtp;             /*!< RTP audio session */
00117    char video_content_name[100];    /*!< name attribute of content tag */
00118    struct ast_rtp *vrtp;            /*!< RTP video session */
00119    int jointcapability;             /*!< Supported capability at both ends (codecs ) */
00120    int peercapability;
00121    struct jingle_pvt *next;   /* Next entity */
00122 };
00123 
00124 struct jingle_candidate {
00125    unsigned int component;          /*!< ex. : 1 for RTP, 2 for RTCP */
00126    unsigned int foundation;         /*!< Function of IP, protocol, type */
00127    unsigned int generation;
00128    char ip[16];
00129    unsigned int network;
00130    unsigned int port;
00131    unsigned int priority;
00132    enum jingle_protocol protocol;
00133    char password[100];
00134    enum jingle_connect_type type;
00135    char ufrag[100];
00136    unsigned int preference;
00137    struct jingle_candidate *next;
00138 };
00139 
00140 struct jingle {
00141    ASTOBJ_COMPONENTS(struct jingle);
00142    struct aji_client *connection;
00143    struct aji_buddy *buddy;
00144    struct jingle_pvt *p;
00145    struct ast_codec_pref prefs;
00146    int amaflags;        /*!< AMA Flags */
00147    char user[100];
00148    char context[100];
00149    char accountcode[AST_MAX_ACCOUNT_CODE];   /*!< Account code */
00150    int capability;
00151    ast_group_t callgroup;  /*!< Call group */
00152    ast_group_t pickupgroup;   /*!< Pickup group */
00153    int callingpres;     /*!< Calling presentation */
00154    int allowguest;
00155    char language[MAX_LANGUAGE];  /*!<  Default language for prompts */
00156    char musicclass[MAX_MUSICCLASS]; /*!<  Music on Hold class */
00157    char parkinglot[AST_MAX_CONTEXT];   /*!< Parkinglot */
00158 };
00159 
00160 struct jingle_container {
00161    ASTOBJ_CONTAINER_COMPONENTS(struct jingle);
00162 };
00163 
00164 static const char desc[] = "Jingle Channel";
00165 static const char channel_type[] = "Jingle";
00166 
00167 static int global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263;
00168 
00169 AST_MUTEX_DEFINE_STATIC(jinglelock); /*!< Protect the interface list (of jingle_pvt's) */
00170 
00171 /* Forward declarations */
00172 static struct ast_channel *jingle_request(const char *type, int format, void *data, int *cause);
00173 static int jingle_digit_begin(struct ast_channel *ast, char digit);
00174 static int jingle_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
00175 static int jingle_call(struct ast_channel *ast, char *dest, int timeout);
00176 static int jingle_hangup(struct ast_channel *ast);
00177 static int jingle_answer(struct ast_channel *ast);
00178 static int jingle_newcall(struct jingle *client, ikspak *pak);
00179 static struct ast_frame *jingle_read(struct ast_channel *ast);
00180 static int jingle_write(struct ast_channel *ast, struct ast_frame *f);
00181 static int jingle_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen);
00182 static int jingle_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
00183 static int jingle_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen);
00184 static struct jingle_pvt *jingle_alloc(struct jingle *client, const char *from, const char *sid);
00185 static char *jingle_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
00186 static char *jingle_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
00187 /*----- RTP interface functions */
00188 static int jingle_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp,
00189                         struct ast_rtp *vrtp, struct ast_rtp *tpeer, int codecs, int nat_active);
00190 static enum ast_rtp_get_result jingle_get_rtp_peer(struct ast_channel *chan, struct ast_rtp **rtp);
00191 static int jingle_get_codec(struct ast_channel *chan);
00192 
00193 /*! \brief PBX interface structure for channel registration */
00194 static const struct ast_channel_tech jingle_tech = {
00195    .type = "Jingle",
00196    .description = "Jingle Channel Driver",
00197    .capabilities = AST_FORMAT_AUDIO_MASK,
00198    .requester = jingle_request,
00199    .send_digit_begin = jingle_digit_begin,
00200    .send_digit_end = jingle_digit_end,
00201    .bridge = ast_rtp_bridge,
00202    .call = jingle_call,
00203    .hangup = jingle_hangup,
00204    .answer = jingle_answer,
00205    .read = jingle_read,
00206    .write = jingle_write,
00207    .exception = jingle_read,
00208    .indicate = jingle_indicate,
00209    .fixup = jingle_fixup,
00210    .send_html = jingle_sendhtml,
00211    .properties = AST_CHAN_TP_WANTSJITTER | AST_CHAN_TP_CREATESJITTER
00212 };
00213 
00214 static struct sockaddr_in bindaddr = { 0, }; /*!< The address we bind to */
00215 
00216 static struct sched_context *sched; /*!< The scheduling context */
00217 static struct io_context *io; /*!< The IO context */
00218 static struct in_addr __ourip;
00219 
00220 
00221 /*! \brief RTP driver interface */
00222 static struct ast_rtp_protocol jingle_rtp = {
00223    type: "Jingle",
00224    get_rtp_info: jingle_get_rtp_peer,
00225    set_rtp_peer: jingle_set_rtp_peer,
00226    get_codec: jingle_get_codec,
00227 };
00228 
00229 static struct ast_cli_entry jingle_cli[] = {
00230    AST_CLI_DEFINE(jingle_do_reload, "Reload Jingle configuration"),
00231    AST_CLI_DEFINE(jingle_show_channels, "Show Jingle channels"),
00232 };
00233 
00234 
00235 static char externip[16];
00236 
00237 static struct jingle_container jingle_list;
00238 
00239 static void jingle_member_destroy(struct jingle *obj)
00240 {
00241    ast_free(obj);
00242 }
00243 
00244 static struct jingle *find_jingle(char *name, char *connection)
00245 {
00246    struct jingle *jingle = NULL;
00247 
00248    jingle = ASTOBJ_CONTAINER_FIND(&jingle_list, name);
00249    if (!jingle && strchr(name, '@'))
00250       jingle = ASTOBJ_CONTAINER_FIND_FULL(&jingle_list, name, user,,, strcasecmp);
00251 
00252    if (!jingle) {          
00253       /* guest call */
00254       ASTOBJ_CONTAINER_TRAVERSE(&jingle_list, 1, {
00255          ASTOBJ_RDLOCK(iterator);
00256          if (!strcasecmp(iterator->name, "guest")) {
00257             jingle = iterator;
00258          }
00259          ASTOBJ_UNLOCK(iterator);
00260 
00261          if (jingle)
00262             break;
00263       });
00264 
00265    }
00266    return jingle;
00267 }
00268 
00269 
00270 static void add_codec_to_answer(const struct jingle_pvt *p, int codec, iks *dcodecs)
00271 {
00272    char *format = ast_getformatname(codec);
00273 
00274    if (!strcasecmp("ulaw", format)) {
00275       iks *payload_eg711u, *payload_pcmu;
00276       payload_pcmu = iks_new("payload-type");
00277       iks_insert_attrib(payload_pcmu, "id", "0");
00278       iks_insert_attrib(payload_pcmu, "name", "PCMU");
00279       payload_eg711u = iks_new("payload-type");
00280       iks_insert_attrib(payload_eg711u, "id", "100");
00281       iks_insert_attrib(payload_eg711u, "name", "EG711U");
00282       iks_insert_node(dcodecs, payload_pcmu);
00283       iks_insert_node(dcodecs, payload_eg711u);
00284    }
00285    if (!strcasecmp("alaw", format)) {
00286       iks *payload_eg711a;
00287       iks *payload_pcma = iks_new("payload-type");
00288       iks_insert_attrib(payload_pcma, "id", "8");
00289       iks_insert_attrib(payload_pcma, "name", "PCMA");
00290       payload_eg711a = iks_new("payload-type");
00291       iks_insert_attrib(payload_eg711a, "id", "101");
00292       iks_insert_attrib(payload_eg711a, "name", "EG711A");
00293       iks_insert_node(dcodecs, payload_pcma);
00294       iks_insert_node(dcodecs, payload_eg711a);
00295    }
00296    if (!strcasecmp("ilbc", format)) {
00297       iks *payload_ilbc = iks_new("payload-type");
00298       iks_insert_attrib(payload_ilbc, "id", "97");
00299       iks_insert_attrib(payload_ilbc, "name", "iLBC");
00300       iks_insert_node(dcodecs, payload_ilbc);
00301    }
00302    if (!strcasecmp("g723", format)) {
00303       iks *payload_g723 = iks_new("payload-type");
00304       iks_insert_attrib(payload_g723, "id", "4");
00305       iks_insert_attrib(payload_g723, "name", "G723");
00306       iks_insert_node(dcodecs, payload_g723);
00307    }
00308    ast_rtp_lookup_code(p->rtp, 1, codec);
00309 }
00310 
00311 static int jingle_accept_call(struct jingle *client, struct jingle_pvt *p)
00312 {
00313    struct jingle_pvt *tmp = client->p;
00314    struct aji_client *c = client->connection;
00315    iks *iq, *jingle, *dcodecs, *payload_red, *payload_audio, *payload_cn;
00316    int x;
00317    int pref_codec = 0;
00318    int alreadysent = 0;
00319 
00320    if (p->initiator)
00321       return 1;
00322 
00323    iq = iks_new("iq");
00324    jingle = iks_new(JINGLE_NODE);
00325    dcodecs = iks_new("description");
00326    if (iq && jingle && dcodecs) {
00327       iks_insert_attrib(dcodecs, "xmlns", JINGLE_AUDIO_RTP_NS);
00328 
00329       for (x = 0; x < 32; x++) {
00330          if (!(pref_codec = ast_codec_pref_index(&client->prefs, x)))
00331             break;
00332          if (!(client->capability & pref_codec))
00333             continue;
00334          if (alreadysent & pref_codec)
00335             continue;
00336          add_codec_to_answer(p, pref_codec, dcodecs);
00337          alreadysent |= pref_codec;
00338       }
00339       payload_red = iks_new("payload-type");
00340       iks_insert_attrib(payload_red, "id", "117");
00341       iks_insert_attrib(payload_red, "name", "red");
00342       payload_audio = iks_new("payload-type");
00343       iks_insert_attrib(payload_audio, "id", "106");
00344       iks_insert_attrib(payload_audio, "name", "audio/telephone-event");
00345       payload_cn = iks_new("payload-type");
00346       iks_insert_attrib(payload_cn, "id", "13");
00347       iks_insert_attrib(payload_cn, "name", "CN");
00348 
00349 
00350       iks_insert_attrib(iq, "type", "set");
00351       iks_insert_attrib(iq, "to", (p->them) ? p->them : client->user);
00352       iks_insert_attrib(iq, "id", client->connection->mid);
00353       ast_aji_increment_mid(client->connection->mid);
00354 
00355       iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
00356       iks_insert_attrib(jingle, "action", JINGLE_ACCEPT);
00357       iks_insert_attrib(jingle, "initiator", p->initiator ? client->connection->jid->full : p->them);
00358       iks_insert_attrib(jingle, JINGLE_SID, tmp->sid);
00359       iks_insert_node(iq, jingle);
00360       iks_insert_node(jingle, dcodecs);
00361       iks_insert_node(dcodecs, payload_red);
00362       iks_insert_node(dcodecs, payload_audio);
00363       iks_insert_node(dcodecs, payload_cn);
00364 
00365       ast_aji_send(c, iq);
00366 
00367       iks_delete(payload_red);
00368       iks_delete(payload_audio);
00369       iks_delete(payload_cn);
00370       iks_delete(dcodecs);
00371       iks_delete(jingle);
00372       iks_delete(iq);
00373    }
00374    return 1;
00375 }
00376 
00377 static int jingle_ringing_ack(void *data, ikspak *pak)
00378 {
00379    struct jingle_pvt *p = data;
00380 
00381    if (p->ringrule)
00382       iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
00383    p->ringrule = NULL;
00384    if (p->owner)
00385       ast_queue_control(p->owner, AST_CONTROL_RINGING);
00386    return IKS_FILTER_EAT;
00387 }
00388 
00389 static int jingle_answer(struct ast_channel *ast)
00390 {
00391    struct jingle_pvt *p = ast->tech_pvt;
00392    struct jingle *client = p->parent;
00393    int res = 0;
00394 
00395    ast_debug(1, "Answer!\n");
00396    ast_mutex_lock(&p->lock);
00397    jingle_accept_call(client, p);
00398    ast_mutex_unlock(&p->lock);
00399    return res;
00400 }
00401 
00402 static enum ast_rtp_get_result jingle_get_rtp_peer(struct ast_channel *chan, struct ast_rtp **rtp)
00403 {
00404    struct jingle_pvt *p = chan->tech_pvt;
00405    enum ast_rtp_get_result res = AST_RTP_GET_FAILED;
00406 
00407    if (!p)
00408       return res;
00409 
00410    ast_mutex_lock(&p->lock);
00411    if (p->rtp) {
00412       *rtp = p->rtp;
00413       res = AST_RTP_TRY_PARTIAL;
00414    }
00415    ast_mutex_unlock(&p->lock);
00416 
00417    return res;
00418 }
00419 
00420 static int jingle_get_codec(struct ast_channel *chan)
00421 {
00422    struct jingle_pvt *p = chan->tech_pvt;
00423    return p->peercapability;
00424 }
00425 
00426 static int jingle_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp, struct ast_rtp *vrtp, struct ast_rtp *tpeer, int codecs, int nat_active)
00427 {
00428    struct jingle_pvt *p;
00429 
00430    p = chan->tech_pvt;
00431    if (!p)
00432       return -1;
00433    ast_mutex_lock(&p->lock);
00434 
00435 /* if (rtp)
00436       ast_rtp_get_peer(rtp, &p->redirip);
00437    else
00438       memset(&p->redirip, 0, sizeof(p->redirip));
00439    p->redircodecs = codecs; */
00440 
00441    /* Reset lastrtprx timer */
00442    ast_mutex_unlock(&p->lock);
00443    return 0;
00444 }
00445 
00446 static int jingle_response(struct jingle *client, ikspak *pak, const char *reasonstr, const char *reasonstr2)
00447 {
00448    iks *response = NULL, *error = NULL, *reason = NULL;
00449    int res = -1;
00450 
00451    response = iks_new("iq");
00452    if (response) {
00453       iks_insert_attrib(response, "type", "result");
00454       iks_insert_attrib(response, "from", client->connection->jid->full);
00455       iks_insert_attrib(response, "to", iks_find_attrib(pak->x, "from"));
00456       iks_insert_attrib(response, "id", iks_find_attrib(pak->x, "id"));
00457       if (reasonstr) {
00458          error = iks_new("error");
00459          if (error) {
00460             iks_insert_attrib(error, "type", "cancel");
00461             reason = iks_new(reasonstr);
00462             if (reason)
00463                iks_insert_node(error, reason);
00464             iks_insert_node(response, error);
00465          }
00466       }
00467       ast_aji_send(client->connection, response);
00468       res = 0;
00469    }
00470    
00471    iks_delete(reason);
00472    iks_delete(error);
00473    iks_delete(response);
00474 
00475    return res;
00476 }
00477 
00478 static int jingle_is_answered(struct jingle *client, ikspak *pak)
00479 {
00480    struct jingle_pvt *tmp;
00481 
00482    ast_debug(1, "The client is %s\n", client->name);
00483    /* Make sure our new call doesn't exist yet */
00484    for (tmp = client->p; tmp; tmp = tmp->next) {
00485       if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid))
00486          break;
00487    }
00488 
00489    if (tmp) {
00490       if (tmp->owner)
00491          ast_queue_control(tmp->owner, AST_CONTROL_ANSWER);
00492    } else
00493       ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
00494    jingle_response(client, pak, NULL, NULL);
00495    return 1;
00496 }
00497 
00498 static int jingle_handle_dtmf(struct jingle *client, ikspak *pak)
00499 {
00500    struct jingle_pvt *tmp;
00501    iks *dtmfnode = NULL, *dtmfchild = NULL;
00502    char *dtmf;
00503    /* Make sure our new call doesn't exist yet */
00504    for (tmp = client->p; tmp; tmp = tmp->next) {
00505       if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid))
00506          break;
00507    }
00508 
00509    if (tmp) {
00510       if(iks_find_with_attrib(pak->x, "dtmf-method", "method", "rtp")) {
00511          jingle_response(client,pak,
00512                "feature-not-implemented xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'",
00513                "unsupported-dtmf-method xmlns='http://www.xmpp.org/extensions/xep-0181.html#ns-errors'");
00514          return -1;
00515       }
00516       if ((dtmfnode = iks_find(pak->x, "dtmf"))) {
00517          if((dtmf = iks_find_attrib(dtmfnode, "code"))) {
00518             if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-up")) {
00519                struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
00520                f.subclass = dtmf[0];
00521                ast_queue_frame(tmp->owner, &f);
00522                ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass);
00523             } else if(iks_find_with_attrib(pak->x, "dtmf", "action", "button-down")) {
00524                struct ast_frame f = {AST_FRAME_DTMF_END, };
00525                f.subclass = dtmf[0];
00526                ast_queue_frame(tmp->owner, &f);
00527                ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass);
00528             } else if(iks_find_attrib(pak->x, "dtmf")) { /* 250 millasecond default */
00529                struct ast_frame f = {AST_FRAME_DTMF, };
00530                f.subclass = dtmf[0];
00531                ast_queue_frame(tmp->owner, &f);
00532                ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass);
00533             }
00534          }
00535       } else if ((dtmfnode = iks_find_with_attrib(pak->x, JINGLE_NODE, "action", "session-info"))) {
00536          if((dtmfchild = iks_find(dtmfnode, "dtmf"))) {
00537             if((dtmf = iks_find_attrib(dtmfchild, "code"))) {
00538                if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-up")) {
00539                   struct ast_frame f = {AST_FRAME_DTMF_END, };
00540                   f.subclass = dtmf[0];
00541                   ast_queue_frame(tmp->owner, &f);
00542                   ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass);
00543                } else if(iks_find_with_attrib(dtmfnode, "dtmf", "action", "button-down")) {
00544                   struct ast_frame f = {AST_FRAME_DTMF_BEGIN, };
00545                   f.subclass = dtmf[0];
00546                   ast_queue_frame(tmp->owner, &f);
00547                   ast_verbose("JINGLE! DTMF-relay event received: %c\n", f.subclass);
00548                }
00549             }
00550          }
00551       }
00552       jingle_response(client, pak, NULL, NULL);
00553       return 1;
00554    } else
00555       ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
00556 
00557    jingle_response(client, pak, NULL, NULL);
00558    return 1;
00559 }
00560 
00561 
00562 static int jingle_hangup_farend(struct jingle *client, ikspak *pak)
00563 {
00564    struct jingle_pvt *tmp;
00565 
00566    ast_debug(1, "The client is %s\n", client->name);
00567    /* Make sure our new call doesn't exist yet */
00568    for (tmp = client->p; tmp; tmp = tmp->next) {
00569       if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid))
00570          break;
00571    }
00572 
00573    if (tmp) {
00574       tmp->alreadygone = 1;
00575       if (tmp->owner)
00576          ast_queue_hangup(tmp->owner);
00577    } else
00578       ast_log(LOG_NOTICE, "Whoa, didn't find call!\n");
00579    jingle_response(client, pak, NULL, NULL);
00580    return 1;
00581 }
00582 
00583 static int jingle_create_candidates(struct jingle *client, struct jingle_pvt *p, char *sid, char *from)
00584 {
00585    struct jingle_candidate *tmp;
00586    struct aji_client *c = client->connection;
00587    struct jingle_candidate *ours1 = NULL, *ours2 = NULL;
00588    struct sockaddr_in sin;
00589    struct sockaddr_in dest;
00590    struct in_addr us;
00591    struct in_addr externaddr;
00592    iks *iq, *jingle, *content, *transport, *candidate;
00593    char component[16], foundation[16], generation[16], network[16], pass[16], port[7], priority[16], user[16];
00594 
00595 
00596    iq = iks_new("iq");
00597    jingle = iks_new(JINGLE_NODE);
00598    content = iks_new("content");
00599    transport = iks_new("transport");
00600    candidate = iks_new("candidate");
00601    if (!iq || !jingle || !content || !transport || !candidate) {
00602       ast_log(LOG_ERROR, "Memory allocation error\n");
00603       goto safeout;
00604    }
00605    ours1 = ast_calloc(1, sizeof(*ours1));
00606    ours2 = ast_calloc(1, sizeof(*ours2));
00607    if (!ours1 || !ours2)
00608       goto safeout;
00609 
00610    iks_insert_node(iq, jingle);
00611    iks_insert_node(jingle, content);
00612    iks_insert_node(content, transport);
00613    iks_insert_node(transport, candidate);
00614 
00615    for (; p; p = p->next) {
00616       if (!strcasecmp(p->sid, sid))
00617          break;
00618    }
00619 
00620    if (!p) {
00621       ast_log(LOG_NOTICE, "No matching jingle session - SID %s!\n", sid);
00622       goto safeout;
00623    }
00624 
00625    ast_rtp_get_us(p->rtp, &sin);
00626    ast_find_ourip(&us, bindaddr);
00627 
00628    /* Setup our first jingle candidate */
00629    ours1->component = 1;
00630    ours1->foundation = (unsigned int)bindaddr.sin_addr.s_addr | AJI_CONNECT_HOST | AJI_PROTOCOL_UDP;
00631    ours1->generation = 0;
00632    ast_copy_string(ours1->ip, ast_inet_ntoa(us), sizeof(ours1->ip));
00633    ours1->network = 0;
00634    ours1->port = ntohs(sin.sin_port);
00635    ours1->priority = 1678246398;
00636    ours1->protocol = AJI_PROTOCOL_UDP;
00637    snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random());
00638    ast_copy_string(ours1->password, pass, sizeof(ours1->password));
00639    ours1->type = AJI_CONNECT_HOST;
00640    snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random());
00641    ast_copy_string(ours1->ufrag, user, sizeof(ours1->ufrag));
00642    p->ourcandidates = ours1;
00643 
00644    if (!ast_strlen_zero(externip)) {
00645       /* XXX We should really stun for this one not just go with externip XXX */
00646       if (inet_aton(externip, &externaddr))
00647          ast_log(LOG_WARNING, "Invalid extern IP : %s\n", externip);
00648 
00649       ours2->component = 1;
00650       ours2->foundation = (unsigned int)externaddr.s_addr | AJI_CONNECT_PRFLX | AJI_PROTOCOL_UDP;
00651       ours2->generation = 0;
00652       ast_copy_string(ours2->ip, externip, sizeof(ours2->ip));
00653       ours2->network = 0;
00654       ours2->port = ntohs(sin.sin_port);
00655       ours2->priority = 1678246397;
00656       ours2->protocol = AJI_PROTOCOL_UDP;
00657       snprintf(pass, sizeof(pass), "%08lx%08lx", ast_random(), ast_random());
00658       ast_copy_string(ours2->password, pass, sizeof(ours2->password));
00659       ours2->type = AJI_CONNECT_PRFLX;
00660 
00661       snprintf(user, sizeof(user), "%08lx%08lx", ast_random(), ast_random());
00662       ast_copy_string(ours2->ufrag, user, sizeof(ours2->ufrag));
00663       ours1->next = ours2;
00664       ours2 = NULL;
00665    }
00666    ours1 = NULL;
00667    dest.sin_addr = __ourip;
00668    dest.sin_port = sin.sin_port;
00669 
00670 
00671    for (tmp = p->ourcandidates; tmp; tmp = tmp->next) {
00672       snprintf(component, sizeof(component), "%u", tmp->component);
00673       snprintf(foundation, sizeof(foundation), "%u", tmp->foundation);
00674       snprintf(generation, sizeof(generation), "%u", tmp->generation);
00675       snprintf(network, sizeof(network), "%u", tmp->network);
00676       snprintf(port, sizeof(port), "%u", tmp->port);
00677       snprintf(priority, sizeof(priority), "%u", tmp->priority);
00678 
00679       iks_insert_attrib(iq, "from", c->jid->full);
00680       iks_insert_attrib(iq, "to", from);
00681       iks_insert_attrib(iq, "type", "set");
00682       iks_insert_attrib(iq, "id", c->mid);
00683       ast_aji_increment_mid(c->mid);
00684       iks_insert_attrib(jingle, "action", JINGLE_NEGOTIATE);
00685       iks_insert_attrib(jingle, JINGLE_SID, sid);
00686       iks_insert_attrib(jingle, "initiator", (p->initiator) ? c->jid->full : from);
00687       iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
00688       iks_insert_attrib(content, "creator", p->initiator ? "initiator" : "responder");
00689       iks_insert_attrib(content, "name", "asterisk-audio-content");
00690       iks_insert_attrib(transport, "xmlns", JINGLE_ICE_UDP_NS);
00691       iks_insert_attrib(candidate, "component", component);
00692       iks_insert_attrib(candidate, "foundation", foundation);
00693       iks_insert_attrib(candidate, "generation", generation);
00694       iks_insert_attrib(candidate, "ip", tmp->ip);
00695       iks_insert_attrib(candidate, "network", network);
00696       iks_insert_attrib(candidate, "port", port);
00697       iks_insert_attrib(candidate, "priority", priority);
00698       switch (tmp->protocol) {
00699       case AJI_PROTOCOL_UDP:
00700          iks_insert_attrib(candidate, "protocol", "udp");
00701          break;
00702       case AJI_PROTOCOL_SSLTCP:
00703          iks_insert_attrib(candidate, "protocol", "ssltcp");
00704          break;
00705       }
00706       iks_insert_attrib(candidate, "pwd", tmp->password);
00707       switch (tmp->type) {
00708       case AJI_CONNECT_HOST:
00709          iks_insert_attrib(candidate, "type", "host");
00710          break;
00711       case AJI_CONNECT_PRFLX:
00712          iks_insert_attrib(candidate, "type", "prflx");
00713          break;
00714       case AJI_CONNECT_RELAY:
00715          iks_insert_attrib(candidate, "type", "relay");
00716          break;
00717       case AJI_CONNECT_SRFLX:
00718          iks_insert_attrib(candidate, "type", "srflx");
00719          break;
00720       }
00721       iks_insert_attrib(candidate, "ufrag", tmp->ufrag);
00722 
00723       ast_aji_send(c, iq);
00724    }
00725    p->laststun = 0;
00726 
00727 safeout:
00728    if (ours1)
00729       ast_free(ours1);
00730    if (ours2)
00731       ast_free(ours2);
00732    iks_delete(iq);
00733    iks_delete(jingle);
00734    iks_delete(content);
00735    iks_delete(transport);
00736    iks_delete(candidate);
00737 
00738    return 1;
00739 }
00740 
00741 static struct jingle_pvt *jingle_alloc(struct jingle *client, const char *from, const char *sid)
00742 {
00743    struct jingle_pvt *tmp = NULL;
00744    struct aji_resource *resources = NULL;
00745    struct aji_buddy *buddy;
00746    char idroster[200];
00747 
00748    ast_debug(1, "The client is %s for alloc\n", client->name);
00749    if (!sid && !strchr(from, '/')) {   /* I started call! */
00750       if (!strcasecmp(client->name, "guest")) {
00751          buddy = ASTOBJ_CONTAINER_FIND(&client->connection->buddies, from);
00752          if (buddy)
00753             resources = buddy->resources;
00754       } else if (client->buddy)
00755          resources = client->buddy->resources;
00756       while (resources) {
00757          if (resources->cap->jingle) {
00758             break;
00759          }
00760          resources = resources->next;
00761       }
00762       if (resources)
00763          snprintf(idroster, sizeof(idroster), "%s/%s", from, resources->resource);
00764       else {
00765          ast_log(LOG_ERROR, "no jingle capable clients to talk to.\n");
00766          return NULL;
00767       }
00768    }
00769    if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
00770       return NULL;
00771    }
00772 
00773    memcpy(&tmp->prefs, &client->prefs, sizeof(tmp->prefs));
00774 
00775    if (sid) {
00776       ast_copy_string(tmp->sid, sid, sizeof(tmp->sid));
00777       ast_copy_string(tmp->them, from, sizeof(tmp->them));
00778    } else {
00779       snprintf(tmp->sid, sizeof(tmp->sid), "%08lx%08lx", ast_random(), ast_random());
00780       ast_copy_string(tmp->them, idroster, sizeof(tmp->them));
00781       tmp->initiator = 1;
00782    }
00783    tmp->rtp = ast_rtp_new_with_bindaddr(sched, io, 1, 0, bindaddr.sin_addr);
00784    tmp->parent = client;
00785    if (!tmp->rtp) {
00786       ast_log(LOG_WARNING, "Out of RTP sessions?\n");
00787       ast_free(tmp);
00788       return NULL;
00789    }
00790    ast_copy_string(tmp->exten, "s", sizeof(tmp->exten));
00791    ast_mutex_init(&tmp->lock);
00792    ast_mutex_lock(&jinglelock);
00793    tmp->next = client->p;
00794    client->p = tmp;
00795    ast_mutex_unlock(&jinglelock);
00796    return tmp;
00797 }
00798 
00799 /*! \brief Start new jingle channel */
00800 static struct ast_channel *jingle_new(struct jingle *client, struct jingle_pvt *i, int state, const char *title)
00801 {
00802    struct ast_channel *tmp;
00803    int fmt;
00804    int what;
00805    const char *str;
00806 
00807    if (title)
00808       str = title;
00809    else
00810       str = i->them;
00811    tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, "", "", "", 0, "Jingle/%s-%04lx", str, ast_random() & 0xffff);
00812    if (!tmp) {
00813       ast_log(LOG_WARNING, "Unable to allocate Jingle channel structure!\n");
00814       return NULL;
00815    }
00816    tmp->tech = &jingle_tech;
00817 
00818    /* Select our native format based on codec preference until we receive
00819       something from another device to the contrary. */
00820    if (i->jointcapability)
00821       what = i->jointcapability;
00822    else if (i->capability)
00823       what = i->capability;
00824    else
00825       what = global_capability;
00826 
00827    /* Set Frame packetization */
00828    if (i->rtp)
00829       ast_rtp_codec_setpref(i->rtp, &i->prefs);
00830 
00831    tmp->nativeformats = ast_codec_choose(&i->prefs, what, 1) | (i->jointcapability & AST_FORMAT_VIDEO_MASK);
00832    fmt = ast_best_codec(tmp->nativeformats);
00833 
00834    if (i->rtp) {
00835       ast_channel_set_fd(tmp, 0, ast_rtp_fd(i->rtp));
00836       ast_channel_set_fd(tmp, 1, ast_rtcp_fd(i->rtp));
00837    }
00838    if (i->vrtp) {
00839       ast_channel_set_fd(tmp, 2, ast_rtp_fd(i->vrtp));
00840       ast_channel_set_fd(tmp, 3, ast_rtcp_fd(i->vrtp));
00841    }
00842    if (state == AST_STATE_RING)
00843       tmp->rings = 1;
00844    tmp->adsicpe = AST_ADSI_UNAVAILABLE;
00845    tmp->writeformat = fmt;
00846    tmp->rawwriteformat = fmt;
00847    tmp->readformat = fmt;
00848    tmp->rawreadformat = fmt;
00849    tmp->tech_pvt = i;
00850 
00851    tmp->callgroup = client->callgroup;
00852    tmp->pickupgroup = client->pickupgroup;
00853    tmp->cid.cid_pres = client->callingpres;
00854    if (!ast_strlen_zero(client->accountcode))
00855       ast_string_field_set(tmp, accountcode, client->accountcode);
00856    if (client->amaflags)
00857       tmp->amaflags = client->amaflags;
00858    if (!ast_strlen_zero(client->language))
00859       ast_string_field_set(tmp, language, client->language);
00860    if (!ast_strlen_zero(client->musicclass))
00861       ast_string_field_set(tmp, musicclass, client->musicclass);
00862    i->owner = tmp;
00863    ast_copy_string(tmp->context, client->context, sizeof(tmp->context));
00864    ast_copy_string(tmp->exten, i->exten, sizeof(tmp->exten));
00865    /* Don't use ast_set_callerid() here because it will
00866     * generate an unnecessary NewCallerID event  */
00867    tmp->cid.cid_ani = ast_strdup(i->cid_num);
00868    if (!ast_strlen_zero(i->exten) && strcmp(i->exten, "s"))
00869       tmp->cid.cid_dnid = ast_strdup(i->exten);
00870    tmp->priority = 1;
00871    if (i->rtp)
00872       ast_jb_configure(tmp, &global_jbconf);
00873    if (state != AST_STATE_DOWN && ast_pbx_start(tmp)) {
00874       ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
00875       tmp->hangupcause = AST_CAUSE_SWITCH_CONGESTION;
00876       ast_hangup(tmp);
00877       tmp = NULL;
00878    }
00879 
00880    return tmp;
00881 }
00882 
00883 static int jingle_action(struct jingle *client, struct jingle_pvt *p, const char *action)
00884 {
00885    iks *iq, *jingle = NULL;
00886    int res = -1;
00887 
00888    iq = iks_new("iq");
00889    jingle = iks_new("jingle");
00890    
00891    if (iq) {
00892       iks_insert_attrib(iq, "type", "set");
00893       iks_insert_attrib(iq, "from", client->connection->jid->full);
00894       iks_insert_attrib(iq, "to", p->them);
00895       iks_insert_attrib(iq, "id", client->connection->mid);
00896       ast_aji_increment_mid(client->connection->mid);
00897       if (jingle) {
00898          iks_insert_attrib(jingle, "action", action);
00899          iks_insert_attrib(jingle, JINGLE_SID, p->sid);
00900          iks_insert_attrib(jingle, "initiator", p->initiator ? client->connection->jid->full : p->them);
00901          iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
00902 
00903          iks_insert_node(iq, jingle);
00904 
00905          ast_aji_send(client->connection, iq);
00906          res = 0;
00907       }
00908    }
00909    
00910    iks_delete(jingle);
00911    iks_delete(iq);
00912    
00913    return res;
00914 }
00915 
00916 static void jingle_free_candidates(struct jingle_candidate *candidate)
00917 {
00918    struct jingle_candidate *last;
00919    while (candidate) {
00920       last = candidate;
00921       candidate = candidate->next;
00922       ast_free(last);
00923    }
00924 }
00925 
00926 static void jingle_free_pvt(struct jingle *client, struct jingle_pvt *p)
00927 {
00928    struct jingle_pvt *cur, *prev = NULL;
00929    cur = client->p;
00930    while (cur) {
00931       if (cur == p) {
00932          if (prev)
00933             prev->next = p->next;
00934          else
00935             client->p = p->next;
00936          break;
00937       }
00938       prev = cur;
00939       cur = cur->next;
00940    }
00941    if (p->ringrule)
00942       iks_filter_remove_rule(p->parent->connection->f, p->ringrule);
00943    if (p->owner)
00944       ast_log(LOG_WARNING, "Uh oh, there's an owner, this is going to be messy.\n");
00945    if (p->rtp)
00946       ast_rtp_destroy(p->rtp);
00947    if (p->vrtp)
00948       ast_rtp_destroy(p->vrtp);
00949    jingle_free_candidates(p->theircandidates);
00950    ast_free(p);
00951 }
00952 
00953 
00954 static int jingle_newcall(struct jingle *client, ikspak *pak)
00955 {
00956    struct jingle_pvt *p, *tmp = client->p;
00957    struct ast_channel *chan;
00958    int res;
00959    iks *codec, *content, *description;
00960    char *from = NULL;
00961 
00962    /* Make sure our new call doesn't exist yet */
00963    from = iks_find_attrib(pak->x,"to");
00964    if(!from)
00965       from = client->connection->jid->full;
00966 
00967    while (tmp) {
00968       if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid)) {
00969          ast_log(LOG_NOTICE, "Ignoring duplicate call setup on SID %s\n", tmp->sid);
00970          jingle_response(client, pak, "out-of-order", NULL);
00971          return -1;
00972       }
00973       tmp = tmp->next;
00974    }
00975 
00976    if (!strcasecmp(client->name, "guest")){
00977       /* the guest account is not tied to any configured XMPP client,
00978          let's set it now */
00979       client->connection = ast_aji_get_client(from);
00980       if (!client->connection) {
00981          ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", from);
00982          return -1;
00983       }
00984    }
00985 
00986    p = jingle_alloc(client, pak->from->partial, iks_find_attrib(pak->query, JINGLE_SID));
00987    if (!p) {
00988       ast_log(LOG_WARNING, "Unable to allocate jingle structure!\n");
00989       return -1;
00990    }
00991    chan = jingle_new(client, p, AST_STATE_DOWN, pak->from->user);
00992    if (!chan) {
00993       jingle_free_pvt(client, p);
00994       return -1;
00995    }
00996    ast_mutex_lock(&p->lock);
00997    ast_copy_string(p->them, pak->from->full, sizeof(p->them));
00998    if (iks_find_attrib(pak->query, JINGLE_SID)) {
00999       ast_copy_string(p->sid, iks_find_attrib(pak->query, JINGLE_SID),
01000             sizeof(p->sid));
01001    }
01002    
01003    /* content points to the first <content/> tag */   
01004    content = iks_child(iks_child(pak->x));
01005    while (content) {
01006       description = iks_find_with_attrib(content, "description", "xmlns", JINGLE_AUDIO_RTP_NS);
01007       if (description) {
01008          /* audio content found */
01009          codec = iks_child(iks_child(content));
01010               ast_copy_string(p->audio_content_name, iks_find_attrib(content, "name"), sizeof(p->audio_content_name));
01011 
01012          while (codec) {
01013             ast_rtp_set_m_type(p->rtp, atoi(iks_find_attrib(codec, "id")));
01014             ast_rtp_set_rtpmap_type(p->rtp, atoi(iks_find_attrib(codec, "id")), "audio", iks_find_attrib(codec, "name"), 0);
01015             codec = iks_next(codec);
01016          }
01017       }
01018       
01019       description = NULL;
01020       codec = NULL;
01021 
01022       description = iks_find_with_attrib(content, "description", "xmlns", JINGLE_VIDEO_RTP_NS);
01023       if (description) {
01024          /* video content found */
01025          codec = iks_child(iks_child(content));
01026               ast_copy_string(p->video_content_name, iks_find_attrib(content, "name"), sizeof(p->video_content_name));
01027 
01028          while (codec) {
01029             ast_rtp_set_m_type(p->rtp, atoi(iks_find_attrib(codec, "id")));
01030             ast_rtp_set_rtpmap_type(p->rtp, atoi(iks_find_attrib(codec, "id")), "audio", iks_find_attrib(codec, "name"), 0);
01031             codec = iks_next(codec);
01032          }
01033       }
01034       
01035       content = iks_next(content);
01036    }
01037 
01038    ast_mutex_unlock(&p->lock);
01039    ast_setstate(chan, AST_STATE_RING);
01040    res = ast_pbx_start(chan);
01041    
01042    switch (res) {
01043    case AST_PBX_FAILED:
01044       ast_log(LOG_WARNING, "Failed to start PBX :(\n");
01045       jingle_response(client, pak, "service-unavailable", NULL);
01046       break;
01047    case AST_PBX_CALL_LIMIT:
01048       ast_log(LOG_WARNING, "Failed to start PBX (call limit reached) \n");
01049       jingle_response(client, pak, "service-unavailable", NULL);
01050       break;
01051    case AST_PBX_SUCCESS:
01052       jingle_response(client, pak, NULL, NULL);
01053       jingle_create_candidates(client, p,
01054                 iks_find_attrib(pak->query, JINGLE_SID),
01055                 iks_find_attrib(pak->x, "from"));
01056       /* nothing to do */
01057       break;
01058    }
01059 
01060    return 1;
01061 }
01062 
01063 static int jingle_update_stun(struct jingle *client, struct jingle_pvt *p)
01064 {
01065    struct jingle_candidate *tmp;
01066    struct hostent *hp;
01067    struct ast_hostent ahp;
01068    struct sockaddr_in sin;
01069 
01070    if (time(NULL) == p->laststun)
01071       return 0;
01072 
01073    tmp = p->theircandidates;
01074    p->laststun = time(NULL);
01075    while (tmp) {
01076       char username[256];
01077       hp = ast_gethostbyname(tmp->ip, &ahp);
01078       sin.sin_family = AF_INET;
01079       memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr));
01080       sin.sin_port = htons(tmp->port);
01081       snprintf(username, sizeof(username), "%s:%s", tmp->ufrag, p->ourcandidates->ufrag);
01082 
01083       ast_rtp_stun_request(p->rtp, &sin, username);
01084       tmp = tmp->next;
01085    }
01086    return 1;
01087 }
01088 
01089 static int jingle_add_candidate(struct jingle *client, ikspak *pak)
01090 {
01091    struct jingle_pvt *p = NULL, *tmp = NULL;
01092    struct aji_client *c = client->connection;
01093    struct jingle_candidate *newcandidate = NULL;
01094    iks *traversenodes = NULL, *receipt = NULL;
01095 
01096    for (tmp = client->p; tmp; tmp = tmp->next) {
01097       if (iks_find_with_attrib(pak->x, JINGLE_NODE, JINGLE_SID, tmp->sid)) {
01098          p = tmp;
01099          break;
01100       }
01101    }
01102 
01103    if (!p)
01104       return -1;
01105 
01106    traversenodes = pak->query;
01107    while(traversenodes) {
01108       if(!strcasecmp(iks_name(traversenodes), "jingle")) {
01109          traversenodes = iks_child(traversenodes);
01110          continue;
01111       }
01112       if(!strcasecmp(iks_name(traversenodes), "content")) {
01113          traversenodes = iks_child(traversenodes);
01114          continue;
01115       }
01116       if(!strcasecmp(iks_name(traversenodes), "transport")) {
01117          traversenodes = iks_child(traversenodes);
01118          continue;
01119       }
01120 
01121       if(!strcasecmp(iks_name(traversenodes), "candidate")) {
01122          newcandidate = ast_calloc(1, sizeof(*newcandidate));
01123          if (!newcandidate)
01124             return 0;
01125          ast_copy_string(newcandidate->ip, iks_find_attrib(traversenodes, "ip"), sizeof(newcandidate->ip));
01126          newcandidate->port = atoi(iks_find_attrib(traversenodes, "port"));
01127          ast_copy_string(newcandidate->password, iks_find_attrib(traversenodes, "pwd"), sizeof(newcandidate->password));
01128          if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "udp"))
01129             newcandidate->protocol = AJI_PROTOCOL_UDP;
01130          else if (!strcasecmp(iks_find_attrib(traversenodes, "protocol"), "ssltcp"))
01131             newcandidate->protocol = AJI_PROTOCOL_SSLTCP;
01132          
01133          if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "host"))
01134             newcandidate->type = AJI_CONNECT_HOST;
01135          else if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "prflx"))
01136             newcandidate->type = AJI_CONNECT_PRFLX;
01137          else if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "relay"))
01138             newcandidate->type = AJI_CONNECT_RELAY;
01139          else if (!strcasecmp(iks_find_attrib(traversenodes, "type"), "srflx"))
01140             newcandidate->type = AJI_CONNECT_SRFLX;
01141 
01142          newcandidate->network = atoi(iks_find_attrib(traversenodes, "network"));
01143          newcandidate->generation = atoi(iks_find_attrib(traversenodes, "generation"));
01144          newcandidate->next = NULL;
01145       
01146          newcandidate->next = p->theircandidates;
01147          p->theircandidates = newcandidate;
01148          p->laststun = 0;
01149          jingle_update_stun(p->parent, p);
01150          newcandidate = NULL;
01151       }
01152       traversenodes = iks_next(traversenodes);
01153    }
01154    
01155    receipt = iks_new("iq");
01156    iks_insert_attrib(receipt, "type", "result");
01157    iks_insert_attrib(receipt, "from", c->jid->full);
01158    iks_insert_attrib(receipt, "to", iks_find_attrib(pak->x, "from"));
01159    iks_insert_attrib(receipt, "id", iks_find_attrib(pak->x, "id"));
01160    ast_aji_send(c, receipt);
01161 
01162    iks_delete(receipt);
01163 
01164    return 1;
01165 }
01166 
01167 static struct ast_frame *jingle_rtp_read(struct ast_channel *ast, struct jingle_pvt *p)
01168 {
01169    struct ast_frame *f;
01170 
01171    if (!p->rtp)
01172       return &ast_null_frame;
01173    f = ast_rtp_read(p->rtp);
01174    jingle_update_stun(p->parent, p);
01175    if (p->owner) {
01176       /* We already hold the channel lock */
01177       if (f->frametype == AST_FRAME_VOICE) {
01178          if (f->subclass != (p->owner->nativeformats & AST_FORMAT_AUDIO_MASK)) {
01179             ast_debug(1, "Oooh, format changed to %d\n", f->subclass);
01180             p->owner->nativeformats =
01181                (p->owner->nativeformats & AST_FORMAT_VIDEO_MASK) | f->subclass;
01182             ast_set_read_format(p->owner, p->owner->readformat);
01183             ast_set_write_format(p->owner, p->owner->writeformat);
01184          }
01185 /*       if ((ast_test_flag(p, SIP_DTMF) == SIP_DTMF_INBAND) && p->vad) {
01186             f = ast_dsp_process(p->owner, p->vad, f);
01187             if (f && (f->frametype == AST_FRAME_DTMF))
01188                ast_debug(1, "* Detected inband DTMF '%c'\n", f->subclass);
01189               } */
01190       }
01191    }
01192    return f;
01193 }
01194 
01195 static struct ast_frame *jingle_read(struct ast_channel *ast)
01196 {
01197    struct ast_frame *fr;
01198    struct jingle_pvt *p = ast->tech_pvt;
01199 
01200    ast_mutex_lock(&p->lock);
01201    fr = jingle_rtp_read(ast, p);
01202    ast_mutex_unlock(&p->lock);
01203    return fr;
01204 }
01205 
01206 /*! \brief Send frame to media channel (rtp) */
01207 static int jingle_write(struct ast_channel *ast, struct ast_frame *frame)
01208 {
01209    struct jingle_pvt *p = ast->tech_pvt;
01210    int res = 0;
01211 
01212    switch (frame->frametype) {
01213    case AST_FRAME_VOICE:
01214       if (!(frame->subclass & ast->nativeformats)) {
01215          ast_log(LOG_WARNING,
01216                "Asked to transmit frame type %d, while native formats is %d (read/write = %d/%d)\n",
01217                frame->subclass, ast->nativeformats, ast->readformat,
01218                ast->writeformat);
01219          return 0;
01220       }
01221       if (p) {
01222          ast_mutex_lock(&p->lock);
01223          if (p->rtp) {
01224             res = ast_rtp_write(p->rtp, frame);
01225          }
01226          ast_mutex_unlock(&p->lock);
01227       }
01228       break;
01229    case AST_FRAME_VIDEO:
01230       if (p) {
01231          ast_mutex_lock(&p->lock);
01232          if (p->vrtp) {
01233             res = ast_rtp_write(p->vrtp, frame);
01234          }
01235          ast_mutex_unlock(&p->lock);
01236       }
01237       break;
01238    case AST_FRAME_IMAGE:
01239       return 0;
01240       break;
01241    default:
01242       ast_log(LOG_WARNING, "Can't send %d type frames with Jingle write\n",
01243             frame->frametype);
01244       return 0;
01245    }
01246 
01247    return res;
01248 }
01249 
01250 static int jingle_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
01251 {
01252    struct jingle_pvt *p = newchan->tech_pvt;
01253    ast_mutex_lock(&p->lock);
01254 
01255    if ((p->owner != oldchan)) {
01256       ast_mutex_unlock(&p->lock);
01257       return -1;
01258    }
01259    if (p->owner == oldchan)
01260       p->owner = newchan;
01261    ast_mutex_unlock(&p->lock);
01262    return 0;
01263 }
01264 
01265 static int jingle_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
01266 {
01267    int res = 0;
01268 
01269    switch (condition) {
01270    case AST_CONTROL_HOLD:
01271       ast_moh_start(ast, data, NULL);
01272       break;
01273    case AST_CONTROL_UNHOLD:
01274       ast_moh_stop(ast);
01275       break;
01276    default:
01277       ast_log(LOG_NOTICE, "Don't know how to indicate condition '%d'\n", condition);
01278       res = -1;
01279    }
01280 
01281    return res;
01282 }
01283 
01284 static int jingle_digit(struct ast_channel *ast, char digit, unsigned int duration)
01285 {
01286    struct jingle_pvt *p = ast->tech_pvt;
01287    struct jingle *client = p->parent;
01288    iks *iq, *jingle, *dtmf;
01289    char buffer[2] = {digit, '\0'};
01290    iq = iks_new("iq");
01291    jingle = iks_new("jingle");
01292    dtmf = iks_new("dtmf");
01293    if(!iq || !jingle || !dtmf) {
01294       iks_delete(iq);
01295       iks_delete(jingle);
01296       iks_delete(dtmf);
01297       ast_log(LOG_ERROR, "Did not send dtmf do to memory issue\n");
01298       return -1;
01299    }
01300 
01301    iks_insert_attrib(iq, "type", "set");
01302    iks_insert_attrib(iq, "to", p->them);
01303    iks_insert_attrib(iq, "from", client->connection->jid->full);
01304    iks_insert_attrib(iq, "id", client->connection->mid);
01305    ast_aji_increment_mid(client->connection->mid);
01306    iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
01307    iks_insert_attrib(jingle, "action", "session-info");
01308    iks_insert_attrib(jingle, "initiator", p->initiator ? client->connection->jid->full : p->them);
01309    iks_insert_attrib(jingle, "sid", p->sid);
01310    iks_insert_attrib(dtmf, "xmlns", JINGLE_DTMF_NS);
01311    iks_insert_attrib(dtmf, "code", buffer);
01312    iks_insert_node(iq, jingle);
01313    iks_insert_node(jingle, dtmf);
01314 
01315    ast_mutex_lock(&p->lock);
01316    if (ast->dtmff.frametype == AST_FRAME_DTMF_BEGIN || duration == 0) {
01317       iks_insert_attrib(dtmf, "action", "button-down");
01318    } else if (ast->dtmff.frametype == AST_FRAME_DTMF_END || duration != 0) {
01319       iks_insert_attrib(dtmf, "action", "button-up");
01320    }
01321    ast_aji_send(client->connection, iq);
01322 
01323    iks_delete(iq);
01324    iks_delete(jingle);
01325    iks_delete(dtmf);
01326    ast_mutex_unlock(&p->lock);
01327    return 0;
01328 }
01329 
01330 static int jingle_digit_begin(struct ast_channel *chan, char digit)
01331 {
01332    return jingle_digit(chan, digit, 0);
01333 }
01334 
01335 static int jingle_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
01336 {
01337    return jingle_digit(ast, digit, duration);
01338 }
01339 
01340 static int jingle_sendhtml(struct ast_channel *ast, int subclass, const char *data, int datalen)
01341 {
01342    ast_log(LOG_NOTICE, "XXX Implement jingle sendhtml XXX\n");
01343 
01344    return -1;
01345 }
01346 static int jingle_transmit_invite(struct jingle_pvt *p)
01347 {
01348    struct jingle *aux = NULL;
01349    struct aji_client *client = NULL;
01350    iks *iq, *jingle, *content, *description, *transport;
01351    iks *payload_eg711u, *payload_pcmu;
01352 
01353    aux = p->parent;
01354    client = aux->connection;
01355    iq = iks_new("iq");
01356    jingle = iks_new(JINGLE_NODE);
01357    content = iks_new("content");
01358    description = iks_new("description");
01359    transport = iks_new("transport");
01360    payload_pcmu = iks_new("payload-type");
01361    payload_eg711u = iks_new("payload-type");
01362 
01363    ast_copy_string(p->audio_content_name, "asterisk-audio-content", sizeof(p->audio_content_name));
01364 
01365    iks_insert_attrib(iq, "type", "set");
01366    iks_insert_attrib(iq, "to", p->them);
01367    iks_insert_attrib(iq, "from", client->jid->full);
01368    iks_insert_attrib(iq, "id", client->mid);
01369    ast_aji_increment_mid(client->mid);
01370    iks_insert_attrib(jingle, "action", JINGLE_INITIATE);
01371    iks_insert_attrib(jingle, JINGLE_SID, p->sid);
01372    iks_insert_attrib(jingle, "initiator", client->jid->full);
01373    iks_insert_attrib(jingle, "xmlns", JINGLE_NS);
01374 
01375    /* For now, we only send one audio based content */
01376    iks_insert_attrib(content, "creator", "initiator");
01377    iks_insert_attrib(content, "name", p->audio_content_name);
01378    iks_insert_attrib(content, "profile", "RTP/AVP");
01379    iks_insert_attrib(description, "xmlns", JINGLE_AUDIO_RTP_NS);
01380    iks_insert_attrib(transport, "xmlns", JINGLE_ICE_UDP_NS);
01381    iks_insert_attrib(payload_pcmu, "id", "0");
01382    iks_insert_attrib(payload_pcmu, "name", "PCMU");
01383    iks_insert_attrib(payload_eg711u, "id", "100");
01384    iks_insert_attrib(payload_eg711u, "name", "EG711U");
01385    iks_insert_node(description, payload_pcmu);
01386    iks_insert_node(description, payload_eg711u);
01387    iks_insert_node(content, description);
01388    iks_insert_node(content, transport);
01389    iks_insert_node(jingle, content);
01390    iks_insert_node(iq, jingle);
01391 
01392    ast_aji_send(client, iq);
01393 
01394    iks_delete(iq);
01395    iks_delete(jingle);
01396    iks_delete(content);
01397    iks_delete(description);
01398    iks_delete(transport);
01399    iks_delete(payload_eg711u);
01400    iks_delete(payload_pcmu);
01401    return 0;
01402 }
01403 
01404 /* Not in use right now.
01405 static int jingle_auto_congest(void *nothing)
01406 {
01407    struct jingle_pvt *p = nothing;
01408 
01409    ast_mutex_lock(&p->lock);
01410    if (p->owner) {
01411       if (!ast_channel_trylock(p->owner)) {
01412          ast_log(LOG_NOTICE, "Auto-congesting %s\n", p->owner->name);
01413          ast_queue_control(p->owner, AST_CONTROL_CONGESTION);
01414          ast_channel_unlock(p->owner);
01415       }
01416    }
01417    ast_mutex_unlock(&p->lock);
01418    return 0;
01419 }
01420 */
01421 
01422 /*! \brief Initiate new call, part of PBX interface 
01423  *    dest is the dial string */
01424 static int jingle_call(struct ast_channel *ast, char *dest, int timeout)
01425 {
01426    struct jingle_pvt *p = ast->tech_pvt;
01427 
01428    if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
01429       ast_log(LOG_WARNING, "jingle_call called on %s, neither down nor reserved\n", ast->name);
01430       return -1;
01431    }
01432 
01433    ast_setstate(ast, AST_STATE_RING);
01434    p->jointcapability = p->capability;
01435    if (!p->ringrule) {
01436       ast_copy_string(p->ring, p->parent->connection->mid, sizeof(p->ring));
01437       p->ringrule = iks_filter_add_rule(p->parent->connection->f, jingle_ringing_ack, p,
01438                      IKS_RULE_ID, p->ring, IKS_RULE_DONE);
01439    } else
01440       ast_log(LOG_WARNING, "Whoa, already have a ring rule!\n");
01441 
01442    jingle_transmit_invite(p);
01443    jingle_create_candidates(p->parent, p, p->sid, p->them);
01444 
01445    return 0;
01446 }
01447 
01448 /*! \brief Hangup a call through the jingle proxy channel */
01449 static int jingle_hangup(struct ast_channel *ast)
01450 {
01451    struct jingle_pvt *p = ast->tech_pvt;
01452    struct jingle *client;
01453 
01454    ast_mutex_lock(&p->lock);
01455    client = p->parent;
01456    p->owner = NULL;
01457    ast->tech_pvt = NULL;
01458    if (!p->alreadygone)
01459       jingle_action(client, p, JINGLE_TERMINATE);
01460    ast_mutex_unlock(&p->lock);
01461 
01462    jingle_free_pvt(client, p);
01463 
01464    return 0;
01465 }
01466 
01467 /*! \brief Part of PBX interface */
01468 static struct ast_channel *jingle_request(const char *request_type, int format, void *data, int *cause)
01469 {
01470    struct jingle_pvt *p = NULL;
01471    struct jingle *client = NULL;
01472    char *sender = NULL, *to = NULL, *s = NULL;
01473    struct ast_channel *chan = NULL;
01474 
01475    if (data) {
01476       s = ast_strdupa(data);
01477       if (s) {
01478          sender = strsep(&s, "/");
01479          if (sender && (sender[0] != '\0'))
01480             to = strsep(&s, "/");
01481          if (!to) {
01482             ast_log(LOG_ERROR, "Bad arguments in Jingle Dialstring: %s\n", (char*) data);
01483             return NULL;
01484          }
01485       }
01486    }
01487 
01488    client = find_jingle(to, sender);
01489    if (!client) {
01490       ast_log(LOG_WARNING, "Could not find recipient.\n");
01491       return NULL;
01492    }
01493    if (!strcasecmp(client->name, "guest")){
01494       /* the guest account is not tied to any configured XMPP client,
01495          let's set it now */
01496       client->connection = ast_aji_get_client(sender);
01497       if (!client->connection) {
01498          ast_log(LOG_ERROR, "No XMPP client to talk to, us (partial JID) : %s\n", sender);
01499          return NULL;
01500       }
01501    }
01502        
01503    ASTOBJ_WRLOCK(client);
01504    p = jingle_alloc(client, to, NULL);
01505    if (p)
01506       chan = jingle_new(client, p, AST_STATE_DOWN, to);
01507    ASTOBJ_UNLOCK(client);
01508 
01509    return chan;
01510 }
01511 
01512 /*! \brief CLI command "jingle show channels" */
01513 static char *jingle_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01514 {
01515 #define FORMAT  "%-30.30s  %-30.30s  %-15.15s  %-5.5s %-5.5s \n"
01516    struct jingle_pvt *p;
01517    struct ast_channel *chan;
01518    int numchans = 0;
01519    char them[AJI_MAX_JIDLEN];
01520    char *jid = NULL;
01521    char *resource = NULL;
01522 
01523    switch (cmd) {
01524    case CLI_INIT:
01525       e->command = "jingle show channels";
01526       e->usage =
01527          "Usage: jingle show channels\n"
01528          "       Shows current state of the Jingle channels.\n";
01529       return NULL;
01530    case CLI_GENERATE:
01531       return NULL;
01532    }
01533 
01534    if (a->argc != 3)
01535       return CLI_SHOWUSAGE;
01536 
01537    ast_mutex_lock(&jinglelock);
01538    ast_cli(a->fd, FORMAT, "Channel", "Jabber ID", "Resource", "Read", "Write");
01539    ASTOBJ_CONTAINER_TRAVERSE(&jingle_list, 1, {
01540       ASTOBJ_WRLOCK(iterator);
01541       p = iterator->p;
01542       while(p) {
01543          chan = p->owner;
01544          ast_copy_string(them, p->them, sizeof(them));
01545          jid = them;
01546          resource = strchr(them, '/');
01547          if (!resource)
01548             resource = "None";
01549          else {
01550             *resource = '\0';
01551             resource ++;
01552          }
01553          if (chan)
01554             ast_cli(a->fd, FORMAT, 
01555                chan->name,
01556                jid,
01557                resource,
01558                ast_getformatname(chan->readformat),
01559                ast_getformatname(chan->writeformat)               
01560                );
01561          else 
01562             ast_log(LOG_WARNING, "No available channel\n");
01563          numchans ++;
01564          p = p->next;
01565       }
01566       ASTOBJ_UNLOCK(iterator);
01567    });
01568 
01569    ast_mutex_unlock(&jinglelock);
01570 
01571    ast_cli(a->fd, "%d active jingle channel%s\n", numchans, (numchans != 1) ? "s" : "");
01572    return CLI_SUCCESS;
01573 #undef FORMAT
01574 }
01575 
01576 /*! \brief CLI command "jingle reload" */
01577 static char *jingle_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01578 {
01579    switch (cmd) {
01580    case CLI_INIT:
01581       e->command = "jingle reload";
01582       e->usage =
01583          "Usage: jingle reload\n"
01584          "       Reload jingle channel driver.\n";
01585       return NULL;
01586    case CLI_GENERATE:
01587       return NULL;
01588    }  
01589    
01590    return CLI_SUCCESS;
01591 }
01592 
01593 static int jingle_parser(void *data, ikspak *pak)
01594 {
01595    struct jingle *client = ASTOBJ_REF((struct jingle *) data);
01596    ast_log(LOG_NOTICE, "Filter matched\n");
01597 
01598    if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_INITIATE)) {
01599       /* New call */
01600       jingle_newcall(client, pak);
01601    } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_NEGOTIATE)) {
01602       ast_debug(3, "About to add candidate!\n");
01603       jingle_add_candidate(client, pak);
01604       ast_debug(3, "Candidate Added!\n");
01605    } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_ACCEPT)) {
01606       jingle_is_answered(client, pak);
01607    } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_INFO)) {
01608       jingle_handle_dtmf(client, pak);
01609    } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", JINGLE_TERMINATE)) {
01610       jingle_hangup_farend(client, pak);
01611    } else if (iks_find_with_attrib(pak->x, JINGLE_NODE, "action", "reject")) {
01612       jingle_hangup_farend(client, pak);
01613    }
01614    ASTOBJ_UNREF(client, jingle_member_destroy);
01615    return IKS_FILTER_EAT;
01616 }
01617 /* Not using this anymore probably take out soon 
01618 static struct jingle_candidate *jingle_create_candidate(char *args)
01619 {
01620    char *name, *type, *preference, *protocol;
01621    struct jingle_candidate *res;
01622    res = ast_calloc(1, sizeof(*res));
01623    if (args)
01624       name = args;
01625    if ((args = strchr(args, ','))) {
01626       *args = '\0';
01627       args++;
01628       preference = args;
01629    }
01630    if ((args = strchr(args, ','))) {
01631       *args = '\0';
01632       args++;
01633       protocol = args;
01634    }
01635    if ((args = strchr(args, ','))) {
01636       *args = '\0';
01637       args++;
01638       type = args;
01639    }
01640    if (name)
01641       ast_copy_string(res->name, name, sizeof(res->name));
01642    if (preference) {
01643       res->preference = atof(preference);
01644    }
01645    if (protocol) {
01646       if (!strcasecmp("udp", protocol))
01647          res->protocol = AJI_PROTOCOL_UDP;
01648       if (!strcasecmp("ssltcp", protocol))
01649          res->protocol = AJI_PROTOCOL_SSLTCP;
01650    }
01651    if (type) {
01652       if (!strcasecmp("host", type))
01653          res->type = AJI_CONNECT_HOST;
01654       if (!strcasecmp("prflx", type))
01655          res->type = AJI_CONNECT_PRFLX;
01656       if (!strcasecmp("relay", type))
01657          res->type = AJI_CONNECT_RELAY;
01658       if (!strcasecmp("srflx", type))
01659          res->type = AJI_CONNECT_SRFLX;
01660    }
01661 
01662    return res;
01663 }
01664 */
01665 
01666 static int jingle_create_member(char *label, struct ast_variable *var, int allowguest,
01667                         struct ast_codec_pref prefs, char *context,
01668                         struct jingle *member)
01669 {
01670    struct aji_client *client;
01671 
01672    if (!member)
01673       ast_log(LOG_WARNING, "Out of memory.\n");
01674 
01675    ast_copy_string(member->name, label, sizeof(member->name));
01676    ast_copy_string(member->user, label, sizeof(member->user));
01677    ast_copy_string(member->context, context, sizeof(member->context));
01678    member->allowguest = allowguest;
01679    member->prefs = prefs;
01680    while (var) {
01681 #if 0
01682       struct jingle_candidate *candidate = NULL;
01683 #endif
01684       if (!strcasecmp(var->name, "username"))
01685          ast_copy_string(member->user, var->value, sizeof(member->user));
01686       else if (!strcasecmp(var->name, "disallow"))
01687          ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 0);
01688       else if (!strcasecmp(var->name, "allow"))
01689          ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 1);
01690       else if (!strcasecmp(var->name, "context"))
01691          ast_copy_string(member->context, var->value, sizeof(member->context));
01692 #if 0
01693       else if (!strcasecmp(var->name, "candidate")) {
01694          candidate = jingle_create_candidate(var->value);
01695          if (candidate) {
01696             candidate->next = member->ourcandidates;
01697             member->ourcandidates = candidate;
01698          }
01699       }
01700 #endif
01701       else if (!strcasecmp(var->name, "connection")) {
01702          if ((client = ast_aji_get_client(var->value))) {
01703             member->connection = client;
01704             iks_filter_add_rule(client->f, jingle_parser, member,
01705                       IKS_RULE_TYPE, IKS_PAK_IQ,
01706                       IKS_RULE_FROM_PARTIAL, member->user,
01707                       IKS_RULE_NS, JINGLE_NS,
01708                       IKS_RULE_DONE);
01709          } else {
01710             ast_log(LOG_ERROR, "connection referenced not found!\n");
01711             return 0;
01712          }
01713       }
01714       var = var->next;
01715    }
01716    if (member->connection && member->user)
01717       member->buddy = ASTOBJ_CONTAINER_FIND(&member->connection->buddies, member->user);
01718    else {
01719       ast_log(LOG_ERROR, "No Connection or Username!\n");
01720    }
01721    return 1;
01722 }
01723 
01724 static int jingle_load_config(void)
01725 {
01726    char *cat = NULL;
01727    struct ast_config *cfg = NULL;
01728    char context[100];
01729    int allowguest = 1;
01730    struct ast_variable *var;
01731    struct jingle *member;
01732    struct hostent *hp;
01733    struct ast_hostent ahp;
01734    struct ast_codec_pref prefs;
01735    struct aji_client_container *clients;
01736    struct jingle_candidate *global_candidates = NULL;
01737    struct ast_flags config_flags = { 0 };
01738 
01739    cfg = ast_config_load(JINGLE_CONFIG, config_flags);
01740    if (!cfg || cfg == CONFIG_STATUS_FILEINVALID) {
01741       return 0;
01742    }
01743 
01744    /* Copy the default jb config over global_jbconf */
01745    memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
01746 
01747    cat = ast_category_browse(cfg, NULL);
01748    for (var = ast_variable_browse(cfg, "general"); var; var = var->next) {
01749       /* handle jb conf */
01750       if (!ast_jb_read_conf(&global_jbconf, var->name, var->value))
01751          continue;
01752 
01753       if (!strcasecmp(var->name, "allowguest"))
01754          allowguest =
01755             (ast_true(ast_variable_retrieve(cfg, "general", "allowguest"))) ? 1 : 0;
01756       else if (!strcasecmp(var->name, "disallow"))
01757          ast_parse_allow_disallow(&prefs, &global_capability, var->value, 0);
01758       else if (!strcasecmp(var->name, "allow"))
01759          ast_parse_allow_disallow(&prefs, &global_capability, var->value, 1);
01760       else if (!strcasecmp(var->name, "context"))
01761          ast_copy_string(context, var->value, sizeof(context));
01762       else if (!strcasecmp(var->name, "externip"))
01763          ast_copy_string(externip, var->value, sizeof(externip));
01764       else if (!strcasecmp(var->name, "bindaddr")) {
01765          if (!(hp = ast_gethostbyname(var->value, &ahp))) {
01766             ast_log(LOG_WARNING, "Invalid address: %s\n", var->value);
01767          } else {
01768             memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr));
01769          }
01770       }
01771 /*  Idea to allow for custom candidates  */
01772 /*
01773       else if (!strcasecmp(var->name, "candidate")) {
01774          candidate = jingle_create_candidate(var->value);
01775          if (candidate) {
01776             candidate->next = global_candidates;
01777             global_candidates = candidate;
01778          }
01779       }
01780 */
01781    }
01782    while (cat) {
01783       if (strcasecmp(cat, "general")) {
01784          var = ast_variable_browse(cfg, cat);
01785          member = ast_calloc(1, sizeof(*member));
01786          ASTOBJ_INIT(member);
01787          ASTOBJ_WRLOCK(member);
01788          if (!strcasecmp(cat, "guest")) {
01789             ast_copy_string(member->name, "guest", sizeof(member->name));
01790             ast_copy_string(member->user, "guest", sizeof(member->user));
01791             ast_copy_string(member->context, context, sizeof(member->context));
01792             member->allowguest = allowguest;
01793             member->prefs = prefs;
01794             while (var) {
01795                if (!strcasecmp(var->name, "disallow"))
01796                   ast_parse_allow_disallow(&member->prefs, &member->capability,
01797                                      var->value, 0);
01798                else if (!strcasecmp(var->name, "allow"))
01799                   ast_parse_allow_disallow(&member->prefs, &member->capability,
01800                                      var->value, 1);
01801                else if (!strcasecmp(var->name, "context"))
01802                   ast_copy_string(member->context, var->value,
01803                               sizeof(member->context));
01804                else if (!strcasecmp(var->name, "parkinglot"))
01805                   ast_copy_string(member->parkinglot, var->value,
01806                               sizeof(member->parkinglot));
01807 /*  Idea to allow for custom candidates  */
01808 /*
01809                else if (!strcasecmp(var->name, "candidate")) {
01810                   candidate = jingle_create_candidate(var->value);
01811                   if (candidate) {
01812                      candidate->next = member->ourcandidates;
01813                      member->ourcandidates = candidate;
01814                   }
01815                }
01816 */
01817                var = var->next;
01818             }
01819             ASTOBJ_UNLOCK(member);
01820             clients = ast_aji_get_clients();
01821             if (clients) {
01822                ASTOBJ_CONTAINER_TRAVERSE(clients, 1, {
01823                   ASTOBJ_WRLOCK(iterator);
01824                   ASTOBJ_WRLOCK(member);
01825                   member->connection = NULL;
01826                   iks_filter_add_rule(iterator->f, jingle_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, JINGLE_NS, IKS_RULE_DONE);
01827                   iks_filter_add_rule(iterator->f, jingle_parser, member, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_NS, JINGLE_DTMF_NS, IKS_RULE_DONE);
01828                   ASTOBJ_UNLOCK(member);
01829                   ASTOBJ_UNLOCK(iterator);
01830                });
01831                ASTOBJ_CONTAINER_LINK(&jingle_list, member);
01832             } else {
01833                ASTOBJ_UNLOCK(member);
01834                ASTOBJ_UNREF(member, jingle_member_destroy);
01835             }
01836          } else {
01837             ASTOBJ_UNLOCK(member);
01838             if (jingle_create_member(cat, var, allowguest, prefs, context, member))
01839                ASTOBJ_CONTAINER_LINK(&jingle_list, member);
01840             ASTOBJ_UNREF(member, jingle_member_destroy);
01841          }
01842       }
01843       cat = ast_category_browse(cfg, cat);
01844    }
01845    jingle_free_candidates(global_candidates);
01846    return 1;
01847 }
01848 
01849 /*! \brief Load module into PBX, register channel */
01850 static int load_module(void)
01851 {
01852    char *jabber_loaded = ast_module_helper("", "res_jabber.so", 0, 0, 0, 0);
01853    free(jabber_loaded);
01854    if (!jabber_loaded) {
01855       /* Dependency module has a different name, if embedded */
01856       jabber_loaded = ast_module_helper("", "res_jabber", 0, 0, 0, 0);
01857       free(jabber_loaded);
01858       if (!jabber_loaded) {
01859          ast_log(LOG_ERROR, "chan_jingle.so depends upon res_jabber.so\n");
01860          return AST_MODULE_LOAD_DECLINE;
01861       }
01862    }
01863 
01864    ASTOBJ_CONTAINER_INIT(&jingle_list);
01865    if (!jingle_load_config()) {
01866       ast_log(LOG_ERROR, "Unable to read config file %s. Not loading module.\n", JINGLE_CONFIG);
01867       return AST_MODULE_LOAD_DECLINE;
01868    }
01869 
01870    sched = sched_context_create();
01871    if (!sched) 
01872       ast_log(LOG_WARNING, "Unable to create schedule context\n");
01873 
01874    io = io_context_create();
01875    if (!io) 
01876       ast_log(LOG_WARNING, "Unable to create I/O context\n");
01877 
01878    if (ast_find_ourip(&__ourip, bindaddr)) {
01879       ast_log(LOG_WARNING, "Unable to get own IP address, Jingle disabled\n");
01880       return 0;
01881    }
01882 
01883    ast_rtp_proto_register(&jingle_rtp);
01884    ast_cli_register_multiple(jingle_cli, ARRAY_LEN(jingle_cli));
01885    /* Make sure we can register our channel type */
01886    if (ast_channel_register(&jingle_tech)) {
01887       ast_log(LOG_ERROR, "Unable to register channel class %s\n", channel_type);
01888       return -1;
01889    }
01890    return 0;
01891 }
01892 
01893 /*! \brief Reload module */
01894 static int reload(void)
01895 {
01896    return 0;
01897 }
01898 
01899 /*! \brief Unload the jingle channel from Asterisk */
01900 static int unload_module(void)
01901 {
01902    struct jingle_pvt *privates = NULL;
01903    ast_cli_unregister_multiple(jingle_cli, ARRAY_LEN(jingle_cli));
01904    /* First, take us out of the channel loop */
01905    ast_channel_unregister(&jingle_tech);
01906    ast_rtp_proto_unregister(&jingle_rtp);
01907 
01908    if (!ast_mutex_lock(&jinglelock)) {
01909       /* Hangup all interfaces if they have an owner */
01910       ASTOBJ_CONTAINER_TRAVERSE(&jingle_list, 1, {
01911          ASTOBJ_WRLOCK(iterator);
01912          privates = iterator->p;
01913          while(privates) {
01914             if (privates->owner)
01915                ast_softhangup(privates->owner, AST_SOFTHANGUP_APPUNLOAD);
01916             privates = privates->next;
01917          }
01918          iterator->p = NULL;
01919          ASTOBJ_UNLOCK(iterator);
01920       });
01921       ast_mutex_unlock(&jinglelock);
01922    } else {
01923       ast_log(LOG_WARNING, "Unable to lock the monitor\n");
01924       return -1;
01925    }
01926    ASTOBJ_CONTAINER_DESTROYALL(&jingle_list, jingle_member_destroy);
01927    ASTOBJ_CONTAINER_DESTROY(&jingle_list);
01928    return 0;
01929 }
01930 
01931 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Jingle Channel Driver",
01932       .load = load_module,
01933       .unload = unload_module,
01934       .reload = reload,
01935           );