/* * Asterisk -- An open source telephony toolkit. * * Copyright (C) 1999 - 2005 * * OpenH323 Channel Driver for ASTERISK PBX. * By Jeremy McNamara * For The NuFone Network * * chan_h323 has been derived from code created by * Michael Manousos and Mark Spencer * * 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 * * \brief This file is part of the chan_h323 driver for Asterisk * * \par See also * \arg Config_h323 * * \ingroup channel_drivers */ #include #include #include #if defined(BSD) #ifndef IPTOS_MINCOST #define IPTOS_MINCOST 0x02 #endif #endif #include #include #include #include #include #include #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif #include "asterisk.h" ASTERISK_FILE_VERSION(__FILE__, "$Revision$") #include "asterisk/lock.h" #include "asterisk/logger.h" #include "asterisk/channel.h" #include "asterisk/config.h" #include "asterisk/module.h" #include "asterisk/pbx.h" #include "asterisk/options.h" #include "asterisk/utils.h" #include "asterisk/lock.h" #include "asterisk/sched.h" #include "asterisk/io.h" #include "asterisk/rtp.h" #include "asterisk/acl.h" #include "asterisk/callerid.h" #include "asterisk/cli.h" #include "asterisk/dsp.h" #include "asterisk/causes.h" #ifdef __cplusplus } #endif #include "h323/chan_h323.h" send_digit_cb on_send_digit; on_rtp_cb on_external_rtp_create; start_rtp_cb on_start_rtp_channel; setup_incoming_cb on_incoming_call; setup_outbound_cb on_outgoing_call; chan_ringing_cb on_chan_ringing; con_established_cb on_connection_established; clear_con_cb on_connection_cleared; answer_call_cb on_answer_call; progress_cb on_progress; rfc2833_cb on_set_rfc2833_payload; hangup_cb on_hangup; setcapabilities_cb on_setcapabilities; /* global debug flag */ int h323debug; /** Variables required by Asterisk */ static const char type[] = "H323"; static const char desc[] = "The NuFone Network's Open H.323 Channel Driver"; static const char tdesc[] = "The NuFone Network's Open H.323 Channel Driver"; static const char config[] = "h323.conf"; static char default_context[AST_MAX_CONTEXT] = "default"; static struct sockaddr_in bindaddr; /** H.323 configuration values */ static int h323_signalling_port = 1720; static char gatekeeper[100]; static int gatekeeper_disable = 1; static int gatekeeper_discover = 0; static int usingGk = 0; static int gkroute = 0; /* Find user by alias (h.323 id) is default, alternative is the incomming call's source IP address*/ static int userbyalias = 1; static int tos = 0; static char secret[50]; static unsigned int unique = 0; static call_options_t global_options; /** Private structure of a OpenH323 channel */ struct oh323_pvt { ast_mutex_t lock; /* Channel private lock */ call_options_t options; /* Options to be used during call setup */ int alreadygone; /* Whether or not we've already been destroyed by our peer */ int needdestroy; /* if we need to be destroyed */ call_details_t cd; /* Call details */ struct ast_channel *owner; /* Who owns us */ struct sockaddr_in sa; /* Our peer */ struct sockaddr_in redirip; /* Where our RTP should be going if not to us */ int nonCodecCapability; /* non-audio capability */ int outgoing; /* Outgoing or incoming call? */ char exten[AST_MAX_EXTENSION]; /* Requested extension */ char context[AST_MAX_CONTEXT]; /* Context where to start */ char accountcode[256]; /* Account code */ char cid_num[80]; /* Caller*id number, if available */ char cid_name[80]; /* Caller*id name, if available */ char rdnis[80]; /* Referring DNIS, if available */ int amaflags; /* AMA Flags */ struct ast_rtp *rtp; /* RTP Session */ struct ast_dsp *vad; /* Used for in-band DTMF detection */ int nativeformats; /* Codec formats supported by a channel */ int needhangup; /* Send hangup when Asterisk is ready */ int hangupcause; /* Hangup cause from OpenH323 layer */ int newstate; /* Pending state change */ int newcontrol; /* Pending control to send */ struct oh323_pvt *next; /* Next channel in list */ } *iflist = NULL; static struct ast_user_list { struct oh323_user *users; ast_mutex_t lock; } userl; static struct ast_peer_list { struct oh323_peer *peers; ast_mutex_t lock; } peerl; static struct ast_alias_list { struct oh323_alias *aliases; ast_mutex_t lock; } aliasl; /** Asterisk RTP stuff */ static struct sched_context *sched; static struct io_context *io; /** Protect the interface list (oh323_pvt) */ AST_MUTEX_DEFINE_STATIC(iflock); /** Usage counter and associated lock */ static int usecnt = 0; AST_MUTEX_DEFINE_STATIC(usecnt_lock); /* Protect the monitoring thread, so only one process can kill or start it, and not when it's doing something critical. */ AST_MUTEX_DEFINE_STATIC(monlock); /* Protect the H.323 capabilities list, to avoid more than one channel to set the capabilities simultaneaously in the h323 stack. */ AST_MUTEX_DEFINE_STATIC(caplock); /* Protect the reload process */ AST_MUTEX_DEFINE_STATIC(h323_reload_lock); static int h323_reloading = 0; /* This is the thread for the monitor which checks for input on the channels which are not currently in use. */ static pthread_t monitor_thread = AST_PTHREADT_NULL; static int restart_monitor(void); static int h323_do_reload(void); static struct ast_channel *oh323_request(const char *type, int format, void *data, int *cause); static int oh323_digit(struct ast_channel *c, char digit); static int oh323_call(struct ast_channel *c, char *dest, int timeout); static int oh323_hangup(struct ast_channel *c); static int oh323_answer(struct ast_channel *c); static struct ast_frame *oh323_read(struct ast_channel *c); static int oh323_write(struct ast_channel *c, struct ast_frame *frame); static int oh323_indicate(struct ast_channel *c, int condition); static int oh323_fixup(struct ast_channel *oldchan, struct ast_channel *newchan); static const struct ast_channel_tech oh323_tech = { .type = type, .description = tdesc, .capabilities = AST_FORMAT_ULAW, .properties = AST_CHAN_TP_WANTSJITTER, .requester = oh323_request, .send_digit = oh323_digit, .call = oh323_call, .hangup = oh323_hangup, .answer = oh323_answer, .read = oh323_read, .write = oh323_write, .indicate = oh323_indicate, .fixup = oh323_fixup, /* disable, for now */ #if 0 .bridge = ast_rtp_bridge, #endif }; /* Channel and private structures should be already locked */ static void __oh323_update_info(struct ast_channel *c, struct oh323_pvt *pvt) { if (c->nativeformats != pvt->nativeformats) { if (h323debug) ast_log(LOG_DEBUG, "Preparing %s for new native format\n", c->name); c->nativeformats = pvt->nativeformats; ast_set_read_format(c, c->readformat); ast_set_write_format(c, c->writeformat); } if (pvt->needhangup) { if (h323debug) ast_log(LOG_DEBUG, "Process pending hangup for %s\n", c->name); c->_softhangup |= AST_SOFTHANGUP_DEV; c->hangupcause = pvt->hangupcause; ast_queue_hangup(c); pvt->needhangup = 0; pvt->newstate = pvt->newcontrol = -1; } if (pvt->newstate >= 0) { ast_setstate(c, pvt->newstate); pvt->newstate = -1; } if (pvt->newcontrol >= 0) { ast_queue_control(c, pvt->newcontrol); pvt->newcontrol = -1; } } /* Only channel structure should be locked */ static void oh323_update_info(struct ast_channel *c) { struct oh323_pvt *pvt = c->tech_pvt; if (pvt) { ast_mutex_lock(&pvt->lock); __oh323_update_info(c, pvt); ast_mutex_unlock(&pvt->lock); } } static void cleanup_call_details(call_details_t *cd) { if (cd->call_token) { free(cd->call_token); cd->call_token = NULL; } if (cd->call_source_aliases) { free(cd->call_source_aliases); cd->call_source_aliases = NULL; } if (cd->call_dest_alias) { free(cd->call_dest_alias); cd->call_dest_alias = NULL; } if (cd->call_source_name) { free(cd->call_source_name); cd->call_source_name = NULL; } if (cd->call_source_e164) { free(cd->call_source_e164); cd->call_source_e164 = NULL; } if (cd->call_dest_e164) { free(cd->call_dest_e164); cd->call_dest_e164 = NULL; } if (cd->sourceIp) { free(cd->sourceIp); cd->sourceIp = NULL; } } static void __oh323_destroy(struct oh323_pvt *pvt) { struct oh323_pvt *cur, *prev = NULL; if (pvt->rtp) { ast_rtp_destroy(pvt->rtp); } /* Free dsp used for in-band DTMF detection */ if (pvt->vad) { ast_dsp_free(pvt->vad); } cleanup_call_details(&pvt->cd); /* Unlink us from the owner if we have one */ if (pvt->owner) { ast_mutex_lock(&pvt->owner->lock); ast_log(LOG_DEBUG, "Detaching from %s\n", pvt->owner->name); pvt->owner->tech_pvt = NULL; ast_mutex_unlock(&pvt->owner->lock); } cur = iflist; while(cur) { if (cur == pvt) { if (prev) prev->next = cur->next; else iflist = cur->next; break; } prev = cur; cur = cur->next; } if (!cur) { ast_log(LOG_WARNING, "%p is not in list?!?! \n", cur); } else { ast_mutex_destroy(&pvt->lock); free(pvt); } } static void oh323_destroy(struct oh323_pvt *pvt) { ast_mutex_lock(&iflock); __oh323_destroy(pvt); ast_mutex_unlock(&iflock); } /** * Send (play) the specified digit to the channel. * */ static int oh323_digit(struct ast_channel *c, char digit) { struct oh323_pvt *pvt = (struct oh323_pvt *) c->tech_pvt; char *token; if (!pvt) { ast_log(LOG_ERROR, "No private structure?! This is bad\n"); return -1; } ast_mutex_lock(&pvt->lock); if (pvt->rtp && (pvt->options.dtmfmode & H323_DTMF_RFC2833)) { /* out-of-band DTMF */ if (h323debug) { ast_log(LOG_DEBUG, "Sending out-of-band digit %c on %s\n", digit, c->name); } ast_rtp_senddigit(pvt->rtp, digit); } else { /* in-band DTMF */ if (h323debug) { ast_log(LOG_DEBUG, "Sending inband digit %c on %s\n", digit, c->name); } token = pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL; h323_send_tone(token, digit); if (token) { free(token); } } ast_mutex_unlock(&pvt->lock); oh323_update_info(c); return 0; } /** * Make a call over the specified channel to the specified * destination. * Returns -1 on error, 0 on success. */ static int oh323_call(struct ast_channel *c, char *dest, int timeout) { int res = 0; struct oh323_pvt *pvt = (struct oh323_pvt *)c->tech_pvt; char addr[INET_ADDRSTRLEN]; char called_addr[1024]; if (h323debug) { ast_log(LOG_DEBUG, "Calling to %s on %s\n", dest, c->name); } if ((c->_state != AST_STATE_DOWN) && (c->_state != AST_STATE_RESERVED)) { ast_log(LOG_WARNING, "Line is already in use (%s)\n", c->name); return -1; } ast_mutex_lock(&pvt->lock); if (usingGk) { if (ast_strlen_zero(pvt->exten)) { strncpy(called_addr, dest, sizeof(called_addr)); } else { snprintf(called_addr, sizeof(called_addr), "%s@%s", pvt->exten, dest); } } else { ast_inet_ntoa(addr, sizeof(addr), pvt->sa.sin_addr); res = htons(pvt->sa.sin_port); if (ast_strlen_zero(pvt->exten)) { snprintf(called_addr, sizeof(called_addr), "%s:%d", addr, res); } else { snprintf(called_addr, sizeof(called_addr), "%s@%s:%d", pvt->exten, addr, res); } } /* make sure null terminated */ called_addr[sizeof(called_addr) - 1] = '\0'; if (c->cid.cid_num) { strncpy(pvt->options.cid_num, c->cid.cid_num, sizeof(pvt->options.cid_num)); } if (c->cid.cid_name) { strncpy(pvt->options.cid_name, c->cid.cid_name, sizeof(pvt->options.cid_name)); } /* indicate that this is an outgoing call */ pvt->outgoing = 1; ast_log(LOG_DEBUG, "Placing outgoing call to %s, %d\n", called_addr, pvt->options.dtmfcodec); ast_mutex_unlock(&pvt->lock); res = h323_make_call(called_addr, &(pvt->cd), &pvt->options); if (res) { ast_log(LOG_NOTICE, "h323_make_call failed(%s)\n", c->name); return -1; } oh323_update_info(c); return 0; } static int oh323_answer(struct ast_channel *c) { int res; struct oh323_pvt *pvt = (struct oh323_pvt *) c->tech_pvt; char *token; if (h323debug) ast_log(LOG_DEBUG, "Answering on %s\n", c->name); ast_mutex_lock(&pvt->lock); token = pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL; ast_mutex_unlock(&pvt->lock); res = h323_answering_call(token, 0); if (token) free(token); oh323_update_info(c); if (c->_state != AST_STATE_UP) { ast_setstate(c, AST_STATE_UP); } return res; } static int oh323_hangup(struct ast_channel *c) { struct oh323_pvt *pvt = (struct oh323_pvt *) c->tech_pvt; int needcancel = 0; int q931cause = AST_CAUSE_NORMAL_CLEARING; char *call_token; if (h323debug) ast_log(LOG_DEBUG, "Hanging up call %s\n", c->name); if (!c->tech_pvt) { ast_log(LOG_DEBUG, "Asked to hangup channel not connected\n"); return 0; } ast_mutex_lock(&pvt->lock); /* Determine how to disconnect */ if (pvt->owner != c) { ast_log(LOG_WARNING, "Huh? We aren't the owner?\n"); ast_mutex_unlock(&pvt->lock); return 0; } if (!c || (c->_state != AST_STATE_UP)) { needcancel = 1; } pvt->owner = NULL; c->tech_pvt = NULL; if (c->hangupcause) { q931cause = c->hangupcause; } else { char *cause = pbx_builtin_getvar_helper(c, "DIALSTATUS"); if (cause) { if (!strcmp(cause, "CONGESTION")) { q931cause = AST_CAUSE_NORMAL_CIRCUIT_CONGESTION; } else if (!strcmp(cause, "BUSY")) { q931cause = AST_CAUSE_USER_BUSY; } else if (!strcmp(cause, "CHANISUNVAIL")) { q931cause = AST_CAUSE_REQUESTED_CHAN_UNAVAIL; } else if (!strcmp(cause, "NOANSWER")) { q931cause = AST_CAUSE_NO_ANSWER; } else if (!strcmp(cause, "CANCEL")) { q931cause = AST_CAUSE_CALL_REJECTED; } } } /* Start the process if it's not already started */ if (!pvt->alreadygone && !pvt->hangupcause) { call_token = pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL; if (call_token) { /* Release lock to eliminate deadlock */ ast_mutex_unlock(&pvt->lock); if (h323_clear_call(call_token, q931cause)) { ast_log(LOG_DEBUG, "ClearCall failed.\n"); } free(call_token); ast_mutex_lock(&pvt->lock); } } pvt->needdestroy = 1; /* Update usage counter */ ast_mutex_lock(&usecnt_lock); usecnt--; if (usecnt < 0) { ast_log(LOG_WARNING, "Usecnt < 0\n"); } ast_mutex_unlock(&usecnt_lock); ast_mutex_unlock(&pvt->lock); ast_update_use_count(); return 0; } static struct ast_frame *oh323_rtp_read(struct oh323_pvt *pvt) { /* Retrieve audio/etc from channel. Assumes pvt->lock is already held. */ struct ast_frame *f; static struct ast_frame null_frame = { AST_FRAME_NULL, }; /* Only apply it for the first packet, we just need the correct ip/port */ if (pvt->options.nat) { ast_rtp_setnat(pvt->rtp, pvt->options.nat); pvt->options.nat = 0; } f = ast_rtp_read(pvt->rtp); /* Don't send RFC2833 if we're not supposed to */ if (f && (f->frametype == AST_FRAME_DTMF) && !(pvt->options.dtmfmode & H323_DTMF_RFC2833)) { return &null_frame; } if (pvt->owner) { /* We already hold the channel lock */ if (f->frametype == AST_FRAME_VOICE) { if (f->subclass != pvt->owner->nativeformats) { /* Try to avoid deadlock */ if (ast_mutex_trylock(&pvt->owner->lock)) { ast_log(LOG_NOTICE, "Format changed but channel is locked. Ignoring frame...\n"); return &null_frame; } ast_log(LOG_DEBUG, "Oooh, format changed to %d\n", f->subclass); pvt->owner->nativeformats = f->subclass; pvt->nativeformats = f->subclass; ast_set_read_format(pvt->owner, pvt->owner->readformat); ast_set_write_format(pvt->owner, pvt->owner->writeformat); ast_mutex_unlock(&pvt->owner->lock); } /* Do in-band DTMF detection */ if ((pvt->options.dtmfmode & H323_DTMF_INBAND) && pvt->vad) { if (!ast_mutex_trylock(&pvt->owner->lock)) { f = ast_dsp_process(pvt->owner,pvt->vad,f); ast_mutex_unlock(&pvt->owner->lock); } else ast_log(LOG_NOTICE, "Unable to process inband DTMF while channel is locked\n"); if (f &&(f->frametype == AST_FRAME_DTMF)) { ast_log(LOG_DEBUG, "Received in-band digit %c.\n", f->subclass); } } } } return f; } static struct ast_frame *oh323_read(struct ast_channel *c) { struct ast_frame *fr; struct oh323_pvt *pvt = (struct oh323_pvt *)c->tech_pvt; ast_mutex_lock(&pvt->lock); __oh323_update_info(c, pvt); fr = oh323_rtp_read(pvt); ast_mutex_unlock(&pvt->lock); return fr; } static int oh323_write(struct ast_channel *c, struct ast_frame *frame) { struct oh323_pvt *pvt = (struct oh323_pvt *) c->tech_pvt; int res = 0; if (frame->frametype != AST_FRAME_VOICE) { if (frame->frametype == AST_FRAME_IMAGE) { return 0; } else { ast_log(LOG_WARNING, "Can't send %d type frames with H323 write\n", frame->frametype); return 0; } } else { if (!(frame->subclass & c->nativeformats)) { ast_log(LOG_WARNING, "Asked to transmit frame type %d, while native formats is %d (read/write = %d/%d)\n", frame->subclass, c->nativeformats, c->readformat, c->writeformat); return 0; } } if (pvt) { ast_mutex_lock(&pvt->lock); if (pvt->rtp) { res = ast_rtp_write(pvt->rtp, frame); } __oh323_update_info(c, pvt); ast_mutex_unlock(&pvt->lock); } return res; } static int oh323_indicate(struct ast_channel *c, int condition) { struct oh323_pvt *pvt = (struct oh323_pvt *) c->tech_pvt; char *token = (char *)NULL; ast_mutex_lock(&pvt->lock); token = (pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL); ast_mutex_unlock(&pvt->lock); if (h323debug) ast_log(LOG_DEBUG, "OH323: Indicating %d on %s\n", condition, token); switch(condition) { case AST_CONTROL_RINGING: if (c->_state == AST_STATE_RING || c->_state == AST_STATE_RINGING) { h323_send_alerting(token); break; } if (token) free(token); return -1; case AST_CONTROL_PROGRESS: if (c->_state != AST_STATE_UP) { h323_send_progress(token); break; } if (token) free(token); return -1; case AST_CONTROL_BUSY: if (c->_state != AST_STATE_UP) { h323_answering_call(token, 1); ast_mutex_lock(&pvt->lock); pvt->alreadygone = 1; ast_mutex_unlock(&pvt->lock); ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV); break; } if (token) free(token); return -1; case AST_CONTROL_CONGESTION: if (c->_state != AST_STATE_UP) { h323_answering_call(token, 1); ast_mutex_lock(&pvt->lock); pvt->alreadygone = 1; ast_mutex_unlock(&pvt->lock); ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV); break; } if (token) free(token); return -1; case AST_CONTROL_PROCEEDING: case -1: if (token) free(token); return -1; default: ast_log(LOG_WARNING, "Don't know how to indicate condition %d on %s\n", condition, token); if (token) free(token); return -1; } if (h323debug) ast_log(LOG_DEBUG, "OH323: Indicated %d on %s\n", condition, token); if (token) free(token); oh323_update_info(c); return -1; } static int oh323_fixup(struct ast_channel *oldchan, struct ast_channel *newchan) { struct oh323_pvt *pvt = (struct oh323_pvt *) newchan->tech_pvt; ast_mutex_lock(&pvt->lock); if (pvt->owner != oldchan) { ast_log(LOG_WARNING, "old channel wasn't %p but was %p\n", oldchan, pvt->owner); return -1; } pvt->owner = newchan; ast_mutex_unlock(&pvt->lock); return 0; } /* Private structure should be locked on a call */ static struct ast_channel *__oh323_new(struct oh323_pvt *pvt, int state, const char *host) { struct ast_channel *ch; int fmt; /* Don't hold a oh323_pvt lock while we allocate a chanel */ ast_mutex_unlock(&pvt->lock); ch = ast_channel_alloc(1); /* Update usage counter */ ast_mutex_lock(&usecnt_lock); usecnt++; ast_mutex_unlock(&usecnt_lock); ast_update_use_count(); ast_mutex_lock(&pvt->lock); if (ch) { ch->tech = &oh323_tech; snprintf(ch->name, sizeof(ch->name), "H323/%s", host); ch->nativeformats = pvt->options.capability; if (!ch->nativeformats) { ch->nativeformats = global_options.capability; } pvt->nativeformats = ch->nativeformats; fmt = ast_best_codec(ch->nativeformats); ch->type = type; ch->fds[0] = ast_rtp_fd(pvt->rtp); if (state == AST_STATE_RING) { ch->rings = 1; } ch->writeformat = fmt; ch->rawwriteformat = fmt; ch->readformat = fmt; ch->rawreadformat = fmt; /* Allocate dsp for in-band DTMF support */ if (pvt->options.dtmfmode & H323_DTMF_INBAND) { pvt->vad = ast_dsp_new(); ast_dsp_set_features(pvt->vad, DSP_FEATURE_DTMF_DETECT); } /* Register channel functions. */ ch->tech_pvt = pvt; /* Set the owner of this channel */ pvt->owner = ch; strncpy(ch->context, pvt->context, sizeof(ch->context) - 1); strncpy(ch->exten, pvt->exten, sizeof(ch->exten) - 1); ch->priority = 1; if (!ast_strlen_zero(pvt->accountcode)) { strncpy(ch->accountcode, pvt->accountcode, sizeof(ch->accountcode) - 1); } if (pvt->amaflags) { ch->amaflags = pvt->amaflags; } if (!ast_strlen_zero(pvt->cid_num)) ch->cid.cid_num = strdup(pvt->cid_num); else if (!ast_strlen_zero(pvt->cd.call_source_e164)) ch->cid.cid_num = strdup(pvt->cd.call_source_e164); if (!ast_strlen_zero(pvt->cid_name)) ch->cid.cid_name = strdup(pvt->cid_name); if (!ast_strlen_zero(pvt->rdnis)) { ch->cid.cid_rdnis = strdup(pvt->rdnis); } if (!ast_strlen_zero(pvt->exten) && strcmp(pvt->exten, "s")) { ch->cid.cid_dnid = strdup(pvt->exten); } ast_setstate(ch, state); if (state != AST_STATE_DOWN) { if (ast_pbx_start(ch)) { ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ch->name); ast_hangup(ch); ch = NULL; } } } else { ast_log(LOG_WARNING, "Unable to allocate channel structure\n"); } return ch; } static struct oh323_pvt *oh323_alloc(int callid) { struct oh323_pvt *pvt; pvt = (struct oh323_pvt *) malloc(sizeof(struct oh323_pvt)); if (!pvt) { ast_log(LOG_ERROR, "Couldn't allocate private structure. This is bad\n"); return NULL; } memset(pvt, 0, sizeof(struct oh323_pvt)); pvt->rtp = ast_rtp_new_with_bindaddr(sched, io, 1, 0,bindaddr.sin_addr); if (!pvt->rtp) { ast_log(LOG_WARNING, "Unable to create RTP session: %s\n", strerror(errno)); free(pvt); return NULL; } ast_rtp_settos(pvt->rtp, tos); ast_mutex_init(&pvt->lock); /* Ensure the call token is allocated */ if ((pvt->cd).call_token == NULL) { (pvt->cd).call_token = (char *)malloc(128); } if (!pvt->cd.call_token) { ast_log(LOG_ERROR, "Not enough memory to alocate call token\n"); return NULL; } memset((char *)(pvt->cd).call_token, 0, 128); pvt->cd.call_reference = callid; memcpy(&pvt->options, &global_options, sizeof(pvt->options)); if (pvt->options.dtmfmode & H323_DTMF_RFC2833) { pvt->nonCodecCapability |= AST_RTP_DTMF; } else { pvt->nonCodecCapability &= ~AST_RTP_DTMF; } strncpy(pvt->context, default_context, sizeof(pvt->context) - 1); pvt->newstate = pvt->newcontrol = -1; /* Add to interface list */ ast_mutex_lock(&iflock); pvt->next = iflist; iflist = pvt; ast_mutex_unlock(&iflock); return pvt; } static struct oh323_pvt *find_call_locked(int call_reference, const char *token) { struct oh323_pvt *pvt; ast_mutex_lock(&iflock); pvt = iflist; while(pvt) { if (!pvt->needdestroy && ((signed int)pvt->cd.call_reference == call_reference)) { /* Found the call */ if ((token != NULL) && (!strcmp(pvt->cd.call_token, token))) { ast_mutex_lock(&pvt->lock); ast_mutex_unlock(&iflock); return pvt; } else if (token == NULL) { ast_log(LOG_WARNING, "Call Token is NULL\n"); ast_mutex_lock(&pvt->lock); ast_mutex_unlock(&iflock); return pvt; } } pvt = pvt->next; } ast_mutex_unlock(&iflock); return NULL; } static int update_state(struct oh323_pvt *pvt, int state, int signal) { if (!pvt) return 0; if (pvt->owner && !ast_mutex_trylock(&pvt->owner->lock)) { if (state >= 0) ast_setstate(pvt->owner, state); if (signal >= 0) ast_queue_control(pvt->owner, signal); return 1; } else { if (state >= 0) pvt->newstate = state; if (signal >= 0) pvt->newcontrol = signal; return 0; } } struct oh323_user *find_user(const call_details_t *cd) { struct oh323_user *u; char iabuf[INET_ADDRSTRLEN]; u = userl.users; if (userbyalias) { while(u) { if (!strcasecmp(u->name, cd->call_source_aliases)) { break; } u = u->next; } } else { while(u) { if (!strcasecmp(cd->sourceIp, ast_inet_ntoa(iabuf, sizeof(iabuf), u->addr.sin_addr))) { break; } u = u->next; } } return u; } struct oh323_peer *find_peer(const char *peer, struct sockaddr_in *sin) { struct oh323_peer *p = NULL; static char iabuf[INET_ADDRSTRLEN]; p = peerl.peers; if (peer) { while(p) { if (!strcasecmp(p->name, peer)) { ast_log(LOG_DEBUG, "Found peer %s by name\n", peer); break; } p = p->next; } } else { /* find by sin */ if (sin) { while (p) { if ((!inaddrcmp(&p->addr, sin)) || (p->addr.sin_addr.s_addr == sin->sin_addr.s_addr)) { ast_log(LOG_DEBUG, "Found peer %s/%s by addr\n", peer, ast_inet_ntoa(iabuf, sizeof(iabuf), p->addr.sin_addr)); break; } p = p->next; } } } if (!p) { ast_log(LOG_DEBUG, "Could not find peer %s by name or address\n", peer); } return p; } static int create_addr(struct oh323_pvt *pvt, char *opeer) { struct hostent *hp; struct ast_hostent ahp; struct oh323_peer *p; int portno; int found = 0; char *port; char *hostn; char peer[256] = ""; strncpy(peer, opeer, sizeof(peer) - 1); port = strchr(peer, ':'); if (port) { *port = '\0'; port++; } pvt->sa.sin_family = AF_INET; ast_mutex_lock(&peerl.lock); p = find_peer(peer, NULL); if (p) { found++; memcpy(&pvt->options, &p->options, sizeof(pvt->options)); if (pvt->rtp) { ast_log(LOG_DEBUG, "Setting NAT on RTP to %d\n", pvt->options.nat); ast_rtp_setnat(pvt->rtp, pvt->options.nat); } if (pvt->options.dtmfmode) { if (pvt->options.dtmfmode & H323_DTMF_RFC2833) { pvt->nonCodecCapability |= AST_RTP_DTMF; } else { pvt->nonCodecCapability &= ~AST_RTP_DTMF; } } if (p->addr.sin_addr.s_addr) { pvt->sa.sin_addr = p->addr.sin_addr; pvt->sa.sin_port = p->addr.sin_port; } } ast_mutex_unlock(&peerl.lock); if (!p && !found) { hostn = peer; if (port) { portno = atoi(port); } else { portno = h323_signalling_port; } hp = ast_gethostbyname(hostn, &ahp); if (hp) { memcpy(&pvt->options, &global_options, sizeof(pvt->options)); memcpy(&pvt->sa.sin_addr, hp->h_addr, sizeof(pvt->sa.sin_addr)); pvt->sa.sin_port = htons(portno); return 0; } else { ast_log(LOG_WARNING, "No such host: %s\n", peer); return -1; } } else if (!p) { return -1; } else { return 0; } } static struct ast_channel *oh323_request(const char *type, int format, void *data, int *cause) { int oldformat; struct oh323_pvt *pvt; struct ast_channel *tmpc = NULL; char *dest = (char *)data; char *ext, *host; char *h323id = NULL; char tmp[256], tmp1[256]; ast_log(LOG_DEBUG, "type=%s, format=%d, data=%s.\n", type, format, (char *)data); pvt = oh323_alloc(0); if (!pvt) { ast_log(LOG_WARNING, "Unable to build pvt data for '%s'\n", (char *)data); return NULL; } oldformat = format; format &= ((AST_FORMAT_MAX_AUDIO << 1) - 1); if (!format) { ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", format); return NULL; } strncpy(tmp, dest, sizeof(tmp) - 1); host = strchr(tmp, '@'); if (host) { *host = '\0'; host++; ext = tmp; } else { host = tmp; ext = NULL; } strtok_r(host, "/", &(h323id)); if (!ast_strlen_zero(h323id)) { h323_set_id(h323id); } if (ext) { strncpy(pvt->exten, ext, sizeof(pvt->exten) - 1); } ast_log(LOG_DEBUG, "Extension: %s Host: %s\n", pvt->exten, host); if (!usingGk) { if (create_addr(pvt, host)) { oh323_destroy(pvt); return NULL; } } else { memcpy(&pvt->options, &global_options, sizeof(pvt->options)); if (pvt->rtp) { ast_log(LOG_DEBUG, "Setting NAT on RTP to %d\n", pvt->options.nat); ast_rtp_setnat(pvt->rtp, pvt->options.nat); } if (pvt->options.dtmfmode) { if (pvt->options.dtmfmode & H323_DTMF_RFC2833) { pvt->nonCodecCapability |= AST_RTP_DTMF; } else { pvt->nonCodecCapability &= ~AST_RTP_DTMF; } } } ast_mutex_lock(&caplock); /* Generate unique channel identifier */ snprintf(tmp1, sizeof(tmp1)-1, "%s-%u", host, ++unique); tmp1[sizeof(tmp1)-1] = '\0'; ast_mutex_unlock(&caplock); ast_mutex_lock(&pvt->lock); tmpc = __oh323_new(pvt, AST_STATE_DOWN, tmp1); ast_mutex_unlock(&pvt->lock); if (!tmpc) { oh323_destroy(pvt); } ast_update_use_count(); restart_monitor(); return tmpc; } /** Find a call by alias */ struct oh323_alias *find_alias(const char *source_aliases) { struct oh323_alias *a; a = aliasl.aliases; while(a) { if (!strcasecmp(a->name, source_aliases)) { break; } a = a->next; } return a; } /** * Callback for sending digits from H.323 up to asterisk * */ int send_digit(unsigned call_reference, char digit, const char *token) { struct oh323_pvt *pvt; struct ast_frame f; int res; ast_log(LOG_DEBUG, "Received Digit: %c\n", digit); pvt = find_call_locked(call_reference, token); if (!pvt) { ast_log(LOG_ERROR, "Private structure not found in send_digit.\n"); return -1; } memset(&f, 0, sizeof(f)); f.frametype = AST_FRAME_DTMF; f.subclass = digit; f.datalen = 0; f.samples = 800; f.offset = 0; f.data = NULL; f.mallocd = 0; f.src = "SEND_DIGIT"; res = ast_queue_frame(pvt->owner, &f); ast_mutex_unlock(&pvt->lock); return res; } /** * Callback function used to inform the H.323 stack of the local rtp ip/port details * * Returns the local RTP information */ struct rtp_info *external_rtp_create(unsigned call_reference, const char * token) { struct oh323_pvt *pvt; struct sockaddr_in us; struct rtp_info *info; info = (struct rtp_info *)malloc(sizeof(struct rtp_info)); if (!info) { ast_log(LOG_ERROR, "Unable to allocated info structure, this is very bad\n"); return NULL; } pvt = find_call_locked(call_reference, token); if (!pvt) { free(info); ast_log(LOG_ERROR, "Unable to find call %s(%d)\n", token, call_reference); return NULL; } /* figure out our local RTP port and tell the H.323 stack about it */ ast_rtp_get_us(pvt->rtp, &us); ast_mutex_unlock(&pvt->lock); ast_inet_ntoa(info->addr, sizeof(info->addr), us.sin_addr); info->port = ntohs(us.sin_port); if (h323debug) ast_log(LOG_DEBUG, "Sending RTP 'US' %s:%d\n", info->addr, info->port); return info; } /** * Definition taken from rtp.c for rtpPayloadType because we need it here. */ struct rtpPayloadType { int isAstFormat; /* whether the following code is an AST_FORMAT */ int code; }; /** * Call-back function passing remote ip/port information from H.323 to asterisk * * Returns nothing */ void setup_rtp_connection(unsigned call_reference, const char *remoteIp, int remotePort, const char *token, int pt) { struct oh323_pvt *pvt; struct sockaddr_in them; struct rtpPayloadType rtptype; if (h323debug) ast_log(LOG_DEBUG, "Setting up RTP connection for %s\n", token); /* Find the call or allocate a private structure if call not found */ pvt = find_call_locked(call_reference, token); if (!pvt) { ast_log(LOG_ERROR, "Something is wrong: rtp\n"); return; } if (pvt->alreadygone) { ast_mutex_unlock(&pvt->lock); return; } rtptype = ast_rtp_lookup_pt(pvt->rtp, pt); pvt->nativeformats = rtptype.code; if (pvt->owner && !ast_mutex_trylock(&pvt->owner->lock)) { pvt->owner->nativeformats = pvt->nativeformats; ast_set_read_format(pvt->owner, pvt->owner->readformat); ast_set_write_format(pvt->owner, pvt->owner->writeformat); if (pvt->options.progress_audio) ast_queue_control(pvt->owner, AST_CONTROL_PROGRESS); ast_mutex_unlock(&pvt->owner->lock); } else { if (pvt->options.progress_audio) pvt->newcontrol = AST_CONTROL_PROGRESS; if (h323debug) ast_log(LOG_DEBUG, "RTP connection preparation for %s is pending...\n", token); } them.sin_family = AF_INET; /* only works for IPv4 */ them.sin_addr.s_addr = inet_addr(remoteIp); them.sin_port = htons(remotePort); ast_rtp_set_peer(pvt->rtp, &them); ast_mutex_unlock(&pvt->lock); if (h323debug) ast_log(LOG_DEBUG, "RTP connection prepared for %s\n", token); return; } /** * Call-back function to signal asterisk that the channel has been answered * Returns nothing */ void connection_made(unsigned call_reference, const char *token) { struct oh323_pvt *pvt; if (h323debug) ast_log(LOG_DEBUG, "Call %s answered\n", token); pvt = find_call_locked(call_reference, token); if (!pvt) { ast_log(LOG_ERROR, "Something is wrong: connection\n"); return; } /* Inform asterisk about remote party connected only on outgoing calls */ if (!pvt->outgoing) { ast_mutex_unlock(&pvt->lock); return; } if (update_state(pvt, AST_STATE_UP, AST_CONTROL_ANSWER)) ast_mutex_unlock(&pvt->owner->lock); ast_mutex_unlock(&pvt->lock); return; } int progress(unsigned call_reference, const char *token, int inband) { struct oh323_pvt *pvt; ast_log(LOG_DEBUG, "Received ALERT/PROGRESS message for %s tones\n", (inband ? "inband" : "self-generated")); pvt = find_call_locked(call_reference, token); if (!pvt) { ast_log(LOG_ERROR, "Private structure not found in progress.\n"); return -1; } if (!pvt->owner) { ast_mutex_unlock(&pvt->lock); ast_log(LOG_ERROR, "No Asterisk channel associated with private structure.\n"); return -1; } if (update_state(pvt, -1, (inband ? AST_CONTROL_PROGRESS : AST_CONTROL_RINGING))) ast_mutex_unlock(&pvt->owner->lock); ast_mutex_unlock(&pvt->lock); return 0; } /** * Call-back function for incoming calls * * Returns 1 on success */ call_options_t *setup_incoming_call(call_details_t *cd) { struct oh323_pvt *pvt; struct oh323_user *user = NULL; struct oh323_alias *alias = NULL; char iabuf[INET_ADDRSTRLEN]; if (h323debug) ast_log(LOG_DEBUG, "Setting up incoming call for %s\n", cd->call_token); /* allocate the call*/ pvt = oh323_alloc(cd->call_reference); if (!pvt) { ast_log(LOG_ERROR, "Unable to allocate private structure, this is bad.\n"); return NULL; } /* Populate the call details in the private structure */ memcpy(&pvt->cd, cd, sizeof(pvt->cd)); memcpy(&pvt->options, &global_options, sizeof(pvt->options)); if (h323debug) { ast_verbose(VERBOSE_PREFIX_3 "Setting up Call\n"); ast_verbose(VERBOSE_PREFIX_3 "\tCall token: [%s]\n", pvt->cd.call_token); ast_verbose(VERBOSE_PREFIX_3 "\tCalling party name: [%s]\n", pvt->cd.call_source_name); ast_verbose(VERBOSE_PREFIX_3 "\tCalling party number: [%s]\n", pvt->cd.call_source_e164); ast_verbose(VERBOSE_PREFIX_3 "\tCalled party name: [%s]\n", pvt->cd.call_dest_alias); ast_verbose(VERBOSE_PREFIX_3 "\tCalled party number: [%s]\n", pvt->cd.call_dest_e164); } /* Decide if we are allowing Gatekeeper routed calls*/ if ((!strcasecmp(cd->sourceIp, gatekeeper)) && (gkroute == -1) && (usingGk)) { if (!ast_strlen_zero(cd->call_dest_e164)) { strncpy(pvt->exten, cd->call_dest_e164, sizeof(pvt->exten) - 1); strncpy(pvt->context, default_context, sizeof(pvt->context) - 1); } else { alias = find_alias(cd->call_dest_alias); if (!alias) { ast_log(LOG_ERROR, "Call for %s rejected, alias not found\n", cd->call_dest_alias); return NULL; } strncpy(pvt->exten, alias->name, sizeof(pvt->exten) - 1); strncpy(pvt->context, alias->context, sizeof(pvt->context) - 1); } } else { /* Either this call is not from the Gatekeeper or we are not allowing gk routed calls */ user = find_user(cd); if (!user) { if (!ast_strlen_zero(pvt->cd.call_dest_e164)) { strncpy(pvt->exten, cd->call_dest_e164, sizeof(pvt->exten) - 1); } else { strncpy(pvt->exten, cd->call_dest_alias, sizeof(pvt->exten) - 1); } if (ast_strlen_zero(default_context)) { ast_log(LOG_ERROR, "Call from '%s' rejected due to no default context\n", pvt->cd.call_source_aliases); return NULL; } strncpy(pvt->context, default_context, sizeof(pvt->context) - 1); ast_log(LOG_DEBUG, "Sending %s to context [%s]\n", cd->call_source_aliases, pvt->context); /* XXX: Is it really required??? */ #if 0 memset(&pvt->options, 0, sizeof(pvt->options)); #endif } else { if (user->host) { if (strcasecmp(cd->sourceIp, ast_inet_ntoa(iabuf, sizeof(iabuf), user->addr.sin_addr))) { if (ast_strlen_zero(user->context)) { if (ast_strlen_zero(default_context)) { ast_log(LOG_ERROR, "Call from '%s' rejected due to non-matching IP address (%s) and no default context\n", user->name, cd->sourceIp); return NULL; } strncpy(pvt->context, default_context, sizeof(pvt->context) - 1); } else { strncpy(pvt->context, user->context, sizeof(pvt->context) - 1); } pvt->exten[0] = 'i'; pvt->exten[1] = '\0'; ast_log(LOG_ERROR, "Call from '%s' rejected due to non-matching IP address (%s)s\n", user->name, cd->sourceIp); return NULL; /* XXX: Hmmm... Why to setup context if we drop connection immediately??? */ } } strncpy(pvt->context, user->context, sizeof(pvt->context) - 1); memcpy(&pvt->options, &user->options, sizeof(pvt->options)); if (!ast_strlen_zero(pvt->cd.call_dest_e164)) { strncpy(pvt->exten, cd->call_dest_e164, sizeof(pvt->exten) - 1); } else { strncpy(pvt->exten, cd->call_dest_alias, sizeof(pvt->exten) - 1); } if (!ast_strlen_zero(user->accountcode)) { strncpy(pvt->accountcode, user->accountcode, sizeof(pvt->accountcode) - 1); } if (user->amaflags) { pvt->amaflags = user->amaflags; } } } return &pvt->options; } /** * Call-back function to start PBX when OpenH323 ready to serve incoming call * * Returns 1 on success */ static int answer_call(unsigned call_reference, const char *token) { struct oh323_pvt *pvt; struct ast_channel *c = NULL; if (h323debug) ast_log(LOG_DEBUG, "Preparing Asterisk to answer for %s\n", token); /* Find the call or allocate a private structure if call not found */ pvt = find_call_locked(call_reference, token); if (!pvt) { ast_log(LOG_ERROR, "Something is wrong: answer_call\n"); return 0; } /* allocate a channel and tell asterisk about it */ c = __oh323_new(pvt, AST_STATE_RINGING, pvt->cd.call_token); /* And release when done */ ast_mutex_unlock(&pvt->lock); if (!c) { ast_log(LOG_ERROR, "Couldn't create channel. This is bad\n"); return 0; } return 1; } /** * Call-back function to establish an outgoing H.323 call * * Returns 1 on success */ int setup_outgoing_call(call_details_t *cd) { /* Use argument here or free it immediately */ cleanup_call_details(cd); return 1; } /** * Call-back function to signal asterisk that the channel is ringing * Returns nothing */ void chan_ringing(unsigned call_reference, const char *token) { struct oh323_pvt *pvt; if (h323debug) ast_log(LOG_DEBUG, "Ringing on %s\n", token); pvt = find_call_locked(call_reference, token); if (!pvt) { ast_log(LOG_ERROR, "Something is wrong: ringing\n"); return; } if (!pvt->owner) { ast_mutex_unlock(&pvt->lock); ast_log(LOG_ERROR, "Channel has no owner\n"); return; } if (update_state(pvt, AST_STATE_RINGING, AST_CONTROL_RINGING)) ast_mutex_unlock(&pvt->owner->lock); ast_mutex_unlock(&pvt->lock); return; } /** * Call-back function to cleanup communication * Returns nothing, */ static void cleanup_connection(unsigned call_reference, const char *call_token) { struct oh323_pvt *pvt; ast_log(LOG_DEBUG, "Cleaning connection to %s\n", call_token); while (1) { pvt = find_call_locked(call_reference, call_token); if (!pvt) { if (h323debug) ast_log(LOG_DEBUG, "No connection for %s\n", call_token); return; } if (!pvt->owner || !ast_mutex_trylock(&pvt->owner->lock)) break; #if 1 #ifdef DEBUG_THREADS ast_log(LOG_NOTICE, "Avoiding H.323 destory deadlock on %s, locked at %ld/%d by %s (%s:%d)\n", call_token, pvt->owner->lock.thread, pvt->owner->lock.reentrancy, pvt->owner->lock.func, pvt->owner->lock.file, pvt->owner->lock.lineno); #else ast_log(LOG_NOTICE, "Avoiding H.323 destory deadlock on %s\n", call_token); #endif #endif ast_mutex_unlock(&pvt->lock); usleep(1); } if (pvt->rtp) { /* Immediately stop RTP */ ast_rtp_destroy(pvt->rtp); pvt->rtp = NULL; } /* Free dsp used for in-band DTMF detection */ if (pvt->vad) { ast_dsp_free(pvt->vad); pvt->vad = NULL; } cleanup_call_details(&pvt->cd); pvt->alreadygone = 1; /* Send hangup */ if (pvt->owner) { pvt->owner->_softhangup |= AST_SOFTHANGUP_DEV; ast_queue_hangup(pvt->owner); ast_mutex_unlock(&pvt->owner->lock); } ast_mutex_unlock(&pvt->lock); if (h323debug) ast_log(LOG_DEBUG, "Connection to %s cleaned\n", call_token); return; } static void hangup_connection(unsigned int call_reference, const char *token, int cause) { struct oh323_pvt *pvt; ast_log(LOG_DEBUG, "Hanging up connection to %s with cause %d\n", token, cause); pvt = find_call_locked(call_reference, token); if (!pvt) { return; } if (pvt->owner && !ast_mutex_trylock(&pvt->owner->lock)) { pvt->owner->_softhangup |= AST_SOFTHANGUP_DEV; pvt->owner->hangupcause = pvt->hangupcause = cause; ast_queue_hangup(pvt->owner); ast_mutex_unlock(&pvt->owner->lock); } else { pvt->needhangup = 1; pvt->hangupcause = cause; ast_log(LOG_DEBUG, "Hangup for %s is pending\n", token); } ast_mutex_unlock(&pvt->lock); } void set_dtmf_payload(unsigned call_reference, const char *token, int payload) { struct oh323_pvt *pvt; if (h323debug) ast_log(LOG_DEBUG, "Setting DTMF payload to %d on %s\n", payload, token); pvt = find_call_locked(call_reference, token); if (!pvt) { return; } if (pvt->rtp) { ast_rtp_set_rtpmap_type(pvt->rtp, payload, "audio", "telephone-event"); } ast_mutex_unlock(&pvt->lock); if (h323debug) ast_log(LOG_DEBUG, "DTMF payload on %s set to %d\n", token, payload); } static void set_local_capabilities(unsigned call_reference, const char *token) { struct oh323_pvt *pvt; int capability, dtmfmode; if (h323debug) ast_log(LOG_DEBUG, "Setting capabilities for connection %s\n", token); pvt = find_call_locked(call_reference, token); if (!pvt) return; capability = pvt->options.capability; dtmfmode = pvt->options.dtmfmode; ast_mutex_unlock(&pvt->lock); h323_set_capabilities(token, capability, dtmfmode); if (h323debug) ast_log(LOG_DEBUG, "Capabilities for connection %s is set\n", token); } static void *do_monitor(void *data) { int res; int reloading; struct oh323_pvt *oh323 = NULL; for(;;) { /* Check for a reload request */ ast_mutex_lock(&h323_reload_lock); reloading = h323_reloading; h323_reloading = 0; ast_mutex_unlock(&h323_reload_lock); if (reloading) { if (option_verbose > 0) { ast_verbose(VERBOSE_PREFIX_1 "Reloading H.323\n"); } h323_do_reload(); } /* Check for interfaces needing to be killed */ ast_mutex_lock(&iflock); restartsearch: oh323 = iflist; while(oh323) { if (oh323->needdestroy) { __oh323_destroy(oh323); goto restartsearch; } oh323 = oh323->next; } ast_mutex_unlock(&iflock); pthread_testcancel(); /* Wait for sched or io */ res = ast_sched_wait(sched); if ((res < 0) || (res > 1000)) { res = 1000; } res = ast_io_wait(io, res); pthread_testcancel(); ast_mutex_lock(&monlock); if (res >= 0) { ast_sched_runq(sched); } ast_mutex_unlock(&monlock); } /* Never reached */ return NULL; } static int restart_monitor(void) { pthread_attr_t attr; /* If we're supposed to be stopped -- stay stopped */ if (monitor_thread == AST_PTHREADT_STOP) { return 0; } if (ast_mutex_lock(&monlock)) { ast_log(LOG_WARNING, "Unable to lock monitor\n"); return -1; } if (monitor_thread == pthread_self()) { ast_mutex_unlock(&monlock); ast_log(LOG_WARNING, "Cannot kill myself\n"); return -1; } if (monitor_thread && (monitor_thread != AST_PTHREADT_NULL)) { /* Wake up the thread */ pthread_kill(monitor_thread, SIGURG); } else { pthread_attr_init(&attr); pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); /* Start a new monitor */ if (ast_pthread_create(&monitor_thread, &attr, do_monitor, NULL) < 0) { ast_mutex_unlock(&monlock); ast_log(LOG_ERROR, "Unable to start monitor thread.\n"); return -1; } } ast_mutex_unlock(&monlock); return 0; } static int h323_do_trace(int fd, int argc, char *argv[]) { if (argc != 3) { return RESULT_SHOWUSAGE; } h323_debug(1, atoi(argv[2])); ast_cli(fd, "H.323 trace set to level %s\n", argv[2]); return RESULT_SUCCESS; } static int h323_no_trace(int fd, int argc, char *argv[]) { if (argc != 3) { return RESULT_SHOWUSAGE; } h323_debug(0,0); ast_cli(fd, "H.323 trace disabled\n"); return RESULT_SUCCESS; } static int h323_do_debug(int fd, int argc, char *argv[]) { if (argc != 2) { return RESULT_SHOWUSAGE; } h323debug = 1; ast_cli(fd, "H323 debug enabled\n"); return RESULT_SUCCESS; } static int h323_no_debug(int fd, int argc, char *argv[]) { if (argc != 3) { return RESULT_SHOWUSAGE; } h323debug = 0; ast_cli(fd, "H323 Debug disabled\n"); return RESULT_SUCCESS; } static int h323_gk_cycle(int fd, int argc, char *argv[]) { #if 0 if (argc != 3) { return RESULT_SHOWUSAGE; } h323_gk_urq(); /* Possibly register with a GK */ if (!gatekeeper_disable) { if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) { ast_log(LOG_ERROR, "Gatekeeper registration failed.\n"); } } #endif return RESULT_SUCCESS; } static int h323_ep_hangup(int fd, int argc, char *argv[]) { if (argc != 3) { return RESULT_SHOWUSAGE; } if (h323_soft_hangup(argv[2])) { ast_verbose(VERBOSE_PREFIX_3 "Hangup succeeded on %s\n", argv[2]); } else { ast_verbose(VERBOSE_PREFIX_3 "Hangup failed for %s\n", argv[2]); } return RESULT_SUCCESS; } static int h323_tokens_show(int fd, int argc, char *argv[]) { if (argc != 3) { return RESULT_SHOWUSAGE; } h323_show_tokens(); return RESULT_SUCCESS; } static char trace_usage[] = "Usage: h.323 trace \n" " Enables H.323 stack tracing for debugging purposes\n"; static char no_trace_usage[] = "Usage: h.323 no trace\n" " Disables H.323 stack tracing for debugging purposes\n"; static char debug_usage[] = "Usage: h.323 debug\n" " Enables H.323 debug output\n"; static char no_debug_usage[] = "Usage: h.323 no debug\n" " Disables H.323 debug output\n"; static char show_codec_usage[] = "Usage: h.323 show codec\n" " Shows all enabled codecs\n"; static char show_cycle_usage[] = "Usage: h.323 gk cycle\n" " Manually re-register with the Gatekeper (Currently Disabled)\n"; static char show_hangup_usage[] = "Usage: h.323 hangup \n" " Manually try to hang up call identified by \n"; static char show_tokens_usage[] = "Usage: h.323 show tokens\n" " Print out all active call tokens\n"; static char h323_reload_usage[] = "Usage: h323 reload\n" " Reloads H.323 configuration from sip.conf\n"; static struct ast_cli_entry cli_trace = { { "h.323", "trace", NULL }, h323_do_trace, "Enable H.323 Stack Tracing", trace_usage }; static struct ast_cli_entry cli_no_trace = { { "h.323", "no", "trace", NULL }, h323_no_trace, "Disable H.323 Stack Tracing", no_trace_usage }; static struct ast_cli_entry cli_debug = { { "h.323", "debug", NULL }, h323_do_debug, "Enable H.323 debug", debug_usage }; static struct ast_cli_entry cli_no_debug = { { "h.323", "no", "debug", NULL }, h323_no_debug, "Disable H.323 debug", no_debug_usage }; static struct ast_cli_entry cli_show_codecs = { { "h.323", "show", "codecs", NULL }, h323_show_codec, "Show enabled codecs", show_codec_usage }; static struct ast_cli_entry cli_gk_cycle = { { "h.323", "gk", "cycle", NULL }, h323_gk_cycle, "Manually re-register with the Gatekeper", show_cycle_usage }; static struct ast_cli_entry cli_hangup_call = { { "h.323", "hangup", NULL }, h323_ep_hangup, "Manually try to hang up a call", show_hangup_usage }; static struct ast_cli_entry cli_show_tokens = { { "h.323", "show", "tokens", NULL }, h323_tokens_show, "Show all active call tokens", show_tokens_usage }; static int update_common_options(struct ast_variable *v, struct call_options *options) { unsigned int format; int tmp; if (!strcasecmp(v->name, "allow")) { format = ast_getformatbyname(v->value); if (format < 1) ast_log(LOG_WARNING, "Cannot allow unknown format '%s'\n", v->value); else options->capability |= format; } else if (!strcasecmp(v->name, "disallow")) { format = ast_getformatbyname(v->value); if (format < 1) ast_log(LOG_WARNING, "Cannot disallow unknown format '%s'\n", v->value); else options->capability &= ~format; } else if (!strcasecmp(v->name, "dtmfmode")) { if (!strcasecmp(v->value, "inband")) { options->dtmfmode = H323_DTMF_INBAND; } else if (!strcasecmp(v->value, "rfc2833")) { options->dtmfmode = H323_DTMF_RFC2833; } else { ast_log(LOG_WARNING, "Unknown dtmf mode '%s', using rfc2833\n", v->value); options->dtmfmode = H323_DTMF_RFC2833; } } else if (!strcasecmp(v->name, "dtmfcodec")) { tmp = atoi(v->value); if (tmp < 96) ast_log(LOG_WARNING, "Invalid global dtmfcodec value %s\n", v->value); else options->dtmfcodec = tmp; } else if (!strcasecmp(v->name, "bridge")) { options->bridge = ast_true(v->value); } else if (!strcasecmp(v->name, "nat")) { options->nat = ast_true(v->value); } else if (!strcasecmp(v->name, "noFastStart")) { options->noFastStart = ast_true(v->value); } else if (!strcasecmp(v->name, "noH245Tunneling")) { options->noH245Tunneling = ast_true(v->value); } else if (!strcasecmp(v->name, "noSilenceSuppression")) { options->noSilenceSuppression = ast_true(v->value); } else if (!strcasecmp(v->name, "progress_setup")) { tmp = atoi(v->value); if ((tmp != 0) && (tmp != 1) && (tmp != 3) && (tmp != 8)) { ast_log(LOG_WARNING, "Invalid value %d for progress_setup at line %d, assuming 0\n", tmp, v->lineno); tmp = 0; } options->progress_setup = tmp; } else if (!strcasecmp(v->name, "progress_alert")) { tmp = atoi(v->value); if ((tmp != 0) && (tmp != 8)) { ast_log(LOG_WARNING, "Invalud value %d for progress_alert at line %d, assuming 0\n", tmp, v->lineno); tmp = 0; } options->progress_alert = tmp; } else if (!strcasecmp(v->name, "progress_audio")) { options->progress_audio = ast_true(v->value); } else return 1; return 0; } static struct oh323_alias *build_alias(char *name, struct ast_variable *v) { struct oh323_alias *alias; alias = (struct oh323_alias *)malloc(sizeof(struct oh323_alias)); if (alias) { memset(alias, 0, sizeof(struct oh323_alias)); strncpy(alias->name, name, sizeof(alias->name) - 1); while (v) { if (!strcasecmp(v->name, "e164")) { strncpy(alias->e164, v->value, sizeof(alias->e164) - 1); } else if (!strcasecmp(v->name, "prefix")) { strncpy(alias->prefix, v->value, sizeof(alias->prefix) - 1); } else if (!strcasecmp(v->name, "context")) { strncpy(alias->context, v->value, sizeof(alias->context) - 1); } else if (!strcasecmp(v->name, "secret")) { strncpy(alias->secret, v->value, sizeof(alias->secret) - 1); } else { if (strcasecmp(v->value, "h323")) { ast_log(LOG_WARNING, "Keyword %s does not make sense in type=h323\n", v->value); } } v = v->next; } } return alias; } static struct oh323_user *build_user(char *name, struct ast_variable *v) { struct oh323_user *user; int format; user = (struct oh323_user *)malloc(sizeof(struct oh323_user)); if (user) { memset(user, 0, sizeof(struct oh323_user)); strncpy(user->name, name, sizeof(user->name) - 1); memcpy(&user->options, &global_options, sizeof(user->options)); /* Set default context */ strncpy(user->context, default_context, sizeof(user->context) - 1); while(v) { if (!strcasecmp(v->name, "context")) { strncpy(user->context, v->value, sizeof(user->context) - 1); } else if (!update_common_options(v, &user->options)) { /* dummy */ } else if (!strcasecmp(v->name, "secret")) { strncpy(user->secret, v->value, sizeof(user->secret) - 1); } else if (!strcasecmp(v->name, "callerid")) { strncpy(user->callerid, v->value, sizeof(user->callerid) - 1); } else if (!strcasecmp(v->name, "accountcode")) { strncpy(user->accountcode, v->value, sizeof(user->accountcode) - 1); } else if (!strcasecmp(v->name, "host")) { if (!strcasecmp(v->value, "dynamic")) { ast_log(LOG_ERROR, "A dynamic host on a type=user does not make any sense\n"); free(user); return NULL; } else if (ast_get_ip(&user->addr, v->value)) { free(user); return NULL; } /* Let us know we need to use ip authentication */ user->host = 1; } else if (!strcasecmp(v->name, "amaflags")) { format = ast_cdr_amaflags2int(v->value); if (format < 0) { ast_log(LOG_WARNING, "Invalid AMA Flags: %s at line %d\n", v->value, v->lineno); } else { user->amaflags = format; } } v = v->next; } } return user; } static struct oh323_peer *build_peer(char *name, struct ast_variable *v) { struct oh323_peer *peer; struct oh323_peer *prev; struct ast_ha *oldha = NULL; int found=0; prev = NULL; ast_mutex_lock(&peerl.lock); peer = peerl.peers; while(peer) { if (!strcasecmp(peer->name, name)) { break; } prev = peer; peer = peer->next; } if (peer) { found++; /* Already in the list, remove it and it will be added back (or FREE'd) */ if (prev) { prev->next = peer->next; } else { peerl.peers = peer->next; } ast_mutex_unlock(&peerl.lock); } else { ast_mutex_unlock(&peerl.lock); peer = (struct oh323_peer*)malloc(sizeof(struct oh323_peer)); if (peer) memset(peer, 0, sizeof(struct oh323_peer)); } if (peer) { if (!found) { strncpy(peer->name, name, sizeof(peer->name) - 1); peer->addr.sin_port = htons(h323_signalling_port); peer->addr.sin_family = AF_INET; } oldha = peer->ha; peer->ha = NULL; peer->addr.sin_family = AF_INET; memcpy(&peer->options, &global_options, sizeof(peer->options)); while(v) { if (!update_common_options(v, &peer->options)) { /* dummy */ } else if (!strcasecmp(v->name, "host")) { if (!strcasecmp(v->value, "dynamic")) { ast_log(LOG_ERROR, "Dynamic host configuration not implemented.\n"); free(peer); return NULL; } if (ast_get_ip(&peer->addr, v->value)) { ast_log(LOG_ERROR, "Could not determine IP for %s\n", v->value); free(peer); return NULL; } } else if (!strcasecmp(v->name, "port")) { peer->addr.sin_port = htons(atoi(v->value)); } v=v->next; } } return peer; } int reload_config(void) { int format; struct ast_config *cfg; struct ast_variable *v; struct oh323_peer *peer = NULL; struct oh323_user *user = NULL; struct oh323_alias *alias = NULL; struct ast_hostent ahp; struct hostent *hp; char *cat; char *utype; cfg = ast_config_load(config); /* We *must* have a config file otherwise stop immediately */ if (!cfg) { ast_log(LOG_NOTICE, "Unable to load config %s, H.323 disabled\n", config); return 1; } /* fire up the H.323 Endpoint */ if (!h323_end_point_exist()) { h323_end_point_create(); } h323debug = 0; memset(&bindaddr, 0, sizeof(bindaddr)); memset(&global_options, 0, sizeof(global_options)); global_options.dtmfcodec = 101; global_options.dtmfmode = H323_DTMF_RFC2833; global_options.capability = ~0; /* All capabilities */ global_options.bridge = 1; /* Do native bridging by default */ v = ast_variable_browse(cfg, "general"); while(v) { /* Create the interface list */ if (!strcasecmp(v->name, "port")) { h323_signalling_port = (int)strtol(v->value, NULL, 10); } else if (!strcasecmp(v->name, "bindaddr")) { if (!(hp = ast_gethostbyname(v->value, &ahp))) { ast_log(LOG_WARNING, "Invalid address: %s\n", v->value); } else { memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr)); } } else if (!strcasecmp(v->name, "tos")) { if (sscanf(v->value, "%d", &format)) { tos = format & 0xff; } else if (!strcasecmp(v->value, "lowdelay")) { tos = IPTOS_LOWDELAY; } else if (!strcasecmp(v->value, "throughput")) { tos = IPTOS_THROUGHPUT; } else if (!strcasecmp(v->value, "reliability")) { tos = IPTOS_RELIABILITY; } else if (!strcasecmp(v->value, "mincost")) { tos = IPTOS_MINCOST; } else if (!strcasecmp(v->value, "none")) { tos = 0; } else { ast_log(LOG_WARNING, "Invalid tos value at line %d, should be 'lowdelay', 'throughput', 'reliability', 'mincost', or 'none'\n", v->lineno); } } else if (!strcasecmp(v->name, "gatekeeper")) { if (!strcasecmp(v->value, "DISABLE")) { gatekeeper_disable = 1; usingGk = 0; } else if (!strcasecmp(v->value, "DISCOVER")) { gatekeeper_disable = 0; gatekeeper_discover = 1; usingGk = 1; } else { gatekeeper_disable = 0; usingGk = 1; strncpy(gatekeeper, v->value, sizeof(gatekeeper) - 1); } } else if (!strcasecmp(v->name, "secret")) { strncpy(secret, v->value, sizeof(secret) - 1); } else if (!strcasecmp(v->name, "AllowGKRouted")) { gkroute = ast_true(v->value); } else if (!strcasecmp(v->name, "context")) { strncpy(default_context, v->value, sizeof(default_context) - 1); ast_verbose(VERBOSE_PREFIX_2 "Setting default context to %s\n", default_context); } else if (!strcasecmp(v->name, "UserByAlias")) { userbyalias = ast_true(v->value); } else if (!update_common_options(v, &global_options)) { /* dummy */ } v = v->next; } cat = ast_category_browse(cfg, NULL); while(cat) { if (strcasecmp(cat, "general")) { utype = ast_variable_retrieve(cfg, cat, "type"); if (utype) { if (!strcasecmp(utype, "user")) { user = build_user(cat, ast_variable_browse(cfg, cat)); if (user) { ast_mutex_lock(&userl.lock); user->next = userl.users; userl.users = user; ast_mutex_unlock(&userl.lock); } } else if (!strcasecmp(utype, "peer")) { peer = build_peer(cat, ast_variable_browse(cfg, cat)); if (peer) { ast_mutex_lock(&peerl.lock); peer->next = peerl.peers; peerl.peers = peer; ast_mutex_unlock(&peerl.lock); } } else if (!strcasecmp(utype, "friend")) { user = build_user(cat, ast_variable_browse(cfg, cat)); peer = build_peer(cat, ast_variable_browse(cfg, cat)); if (user) { ast_mutex_lock(&userl.lock); user->next = userl.users; userl.users = user; ast_mutex_unlock(&userl.lock); } if (peer) { ast_mutex_lock(&peerl.lock); peer->next = peerl.peers; peerl.peers = peer; ast_mutex_unlock(&peerl.lock); } } else if (!strcasecmp(utype, "h323") || !strcasecmp(utype, "alias")) { alias = build_alias(cat, ast_variable_browse(cfg, cat)); if (alias) { ast_mutex_lock(&aliasl.lock); alias->next = aliasl.aliases; aliasl.aliases = alias; ast_mutex_unlock(&aliasl.lock); } } else { ast_log(LOG_WARNING, "Unknown type '%s' for '%s' in %s\n", utype, cat, config); } } else { ast_log(LOG_WARNING, "Section '%s' lacks type\n", cat); } } cat = ast_category_browse(cfg, cat); } ast_config_destroy(cfg); /* Register our H.323 aliases if any*/ while (alias) { if (h323_set_alias(alias)) { ast_log(LOG_ERROR, "Alias %s rejected by endpoint\n", alias->name); return -1; } alias = alias->next; } return 0; } void delete_users(void) { struct oh323_user *user, *userlast; struct oh323_peer *peer; /* Delete all users */ ast_mutex_lock(&userl.lock); for (user=userl.users;user;) { userlast = user; user=user->next; free(userlast); } userl.users=NULL; ast_mutex_unlock(&userl.lock); ast_mutex_lock(&peerl.lock); for (peer=peerl.peers;peer;) { /* Assume all will be deleted, and we'll find out for sure later */ peer->delme = 1; peer = peer->next; } ast_mutex_unlock(&peerl.lock); } void delete_aliases(void) { struct oh323_alias *alias, *aliaslast; /* Delete all users */ ast_mutex_lock(&aliasl.lock); for (alias=aliasl.aliases;alias;) { aliaslast = alias; alias=alias->next; free(aliaslast); } aliasl.aliases=NULL; ast_mutex_unlock(&aliasl.lock); } void prune_peers(void) { /* Prune peers who still are supposed to be deleted */ struct oh323_peer *peer, *peerlast, *peernext; ast_mutex_lock(&peerl.lock); peerlast = NULL; for (peer=peerl.peers;peer;) { peernext = peer->next; if (peer->delme) { free(peer); if (peerlast) { peerlast->next = peernext; } else { peerl.peers = peernext; } } else { peerlast = peer; } peer = peernext; } ast_mutex_unlock(&peerl.lock); } static int h323_reload(int fd, int argc, char *argv[]) { ast_mutex_lock(&h323_reload_lock); if (h323_reloading) { ast_verbose("Previous H.323 reload not yet done\n"); } else { h323_reloading = 1; } ast_mutex_unlock(&h323_reload_lock); restart_monitor(); return 0; } static int h323_do_reload(void) { delete_users(); delete_aliases(); prune_peers(); reload_config(); restart_monitor(); return 0; } int reload(void) { return h323_reload(0, 0, NULL); } static struct ast_cli_entry cli_h323_reload = { { "h.323", "reload", NULL }, h323_reload, "Reload H.323 configuration", h323_reload_usage }; static struct ast_rtp *oh323_get_rtp_peer(struct ast_channel *chan) { struct oh323_pvt *pvt; pvt = (struct oh323_pvt *) chan->tech_pvt; if (pvt && pvt->rtp && pvt->options.bridge) { return pvt->rtp; } return NULL; } static struct ast_rtp *oh323_get_vrtp_peer(struct ast_channel *chan) { return NULL; } static char *convertcap(int cap) { switch (cap) { case AST_FORMAT_G723_1: return "G.723"; case AST_FORMAT_GSM: return "GSM"; case AST_FORMAT_ULAW: return "ULAW"; case AST_FORMAT_ALAW: return "ALAW"; case AST_FORMAT_ADPCM: return "G.728"; case AST_FORMAT_G729A: return "G.729"; case AST_FORMAT_SPEEX: return "SPEEX"; case AST_FORMAT_ILBC: return "ILBC"; default: ast_log(LOG_NOTICE, "Don't know how to deal with mode %d\n", cap); return NULL; } } static int oh323_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp, struct ast_rtp *vrtp, int codecs, int nat_active) { /* XXX Deal with Video */ struct oh323_pvt *pvt; struct sockaddr_in them; struct sockaddr_in us; char *mode; char iabuf[INET_ADDRSTRLEN]; if (!rtp) { return 0; } mode = convertcap(chan->writeformat); pvt = (struct oh323_pvt *) chan->tech_pvt; if (!pvt) { ast_log(LOG_ERROR, "No Private Structure, this is bad\n"); return -1; } ast_rtp_get_peer(rtp, &them); ast_rtp_get_us(rtp, &us); h323_native_bridge(pvt->cd.call_token, ast_inet_ntoa(iabuf, sizeof(iabuf), them.sin_addr), mode); return 0; } static struct ast_rtp_protocol oh323_rtp = { .type = type, .get_rtp_info = oh323_get_rtp_peer, .get_vrtp_info = oh323_get_vrtp_peer, .set_rtp_peer = oh323_set_rtp_peer, }; int load_module() { int res; ast_mutex_init(&userl.lock); ast_mutex_init(&peerl.lock); ast_mutex_init(&aliasl.lock); sched = 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"); } res = reload_config(); if (res) { return 0; } else { /* Make sure we can register our channel type */ if (ast_channel_register(&oh323_tech)) { ast_log(LOG_ERROR, "Unable to register channel class %s\n", type); h323_end_process(); return -1; } ast_cli_register(&cli_debug); ast_cli_register(&cli_no_debug); ast_cli_register(&cli_trace); ast_cli_register(&cli_no_trace); ast_cli_register(&cli_show_codecs); ast_cli_register(&cli_gk_cycle); ast_cli_register(&cli_hangup_call); ast_cli_register(&cli_show_tokens); ast_cli_register(&cli_h323_reload); ast_rtp_proto_register(&oh323_rtp); /* Register our callback functions */ h323_callback_register(setup_incoming_call, setup_outgoing_call, external_rtp_create, setup_rtp_connection, cleanup_connection, chan_ringing, connection_made, send_digit, answer_call, progress, set_dtmf_payload, hangup_connection, set_local_capabilities); /* start the h.323 listener */ if (h323_start_listener(h323_signalling_port, bindaddr)) { ast_log(LOG_ERROR, "Unable to create H323 listener.\n"); return -1; } /* Possibly register with a GK */ if (!gatekeeper_disable) { if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) { ast_log(LOG_ERROR, "Gatekeeper registration failed.\n"); return 0; } } /* And start the monitor for the first time */ restart_monitor(); } return res; } int unload_module() { struct oh323_pvt *p, *pl; /* unregister commands */ ast_cli_unregister(&cli_debug); ast_cli_unregister(&cli_no_debug); ast_cli_unregister(&cli_trace); ast_cli_unregister(&cli_no_trace); ast_cli_unregister(&cli_show_codecs); ast_cli_unregister(&cli_gk_cycle); ast_cli_unregister(&cli_hangup_call); ast_cli_unregister(&cli_show_tokens); ast_cli_unregister(&cli_h323_reload); ast_rtp_proto_unregister(&oh323_rtp); ast_channel_unregister(&oh323_tech); if (!ast_mutex_lock(&iflock)) { /* hangup all interfaces if they have an owner */ p = iflist; while(p) { if (p->owner) { ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD); } p = p->next; } iflist = NULL; ast_mutex_unlock(&iflock); } else { ast_log(LOG_WARNING, "Unable to lock the interface list\n"); return -1; } if (!ast_mutex_lock(&monlock)) { if (monitor_thread && (monitor_thread != AST_PTHREADT_STOP)) { /* this causes a seg, anyone know why? */ pthread_cancel(monitor_thread); pthread_kill(monitor_thread, SIGURG); pthread_join(monitor_thread, NULL); } monitor_thread = AST_PTHREADT_STOP; ast_mutex_unlock(&monlock); } else { ast_log(LOG_WARNING, "Unable to lock the monitor\n"); return -1; } if (!ast_mutex_lock(&iflock)) { /* destroy all the interfaces and free their memory */ p = iflist; while(p) { pl = p; p = p->next; /* free associated memory */ ast_mutex_destroy(&pl->lock); free(pl); } iflist = NULL; ast_mutex_unlock(&iflock); } else { ast_log(LOG_WARNING, "Unable to lock the interface list\n"); return -1; } h323_gk_urq(); h323_end_process(); io_context_destroy(io); sched_context_destroy(sched); delete_users(); delete_aliases(); prune_peers(); ast_mutex_destroy(&aliasl.lock); ast_mutex_destroy(&userl.lock); ast_mutex_destroy(&peerl.lock); return 0; } int usecount() { return usecnt; } char *description() { return (char *) desc; } char *key() { return ASTERISK_GPL_KEY; }