diff options
Diffstat (limited to '1.4.23-rc4/channels/chan_h323.c')
| -rw-r--r-- | 1.4.23-rc4/channels/chan_h323.c | 3274 |
1 files changed, 0 insertions, 3274 deletions
diff --git a/1.4.23-rc4/channels/chan_h323.c b/1.4.23-rc4/channels/chan_h323.c deleted file mode 100644 index 1199ddda9..000000000 --- a/1.4.23-rc4/channels/chan_h323.c +++ /dev/null @@ -1,3274 +0,0 @@ -/* - * 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 - * - * \author Jeremy McNamara - * - * \par See also - * \arg Config_h323 - * - * \ingroup channel_drivers - */ - -/*** MODULEINFO - <depend>openh323</depend> - <defaultenabled>yes</defaultenabled> - ***/ - -#ifdef __cplusplus -extern "C" { -#endif - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#ifdef __cplusplus -} -#endif - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/signal.h> -#include <sys/param.h> -#if defined(BSD) || defined(SOLARIS) -#ifndef IPTOS_MINCOST -#define IPTOS_MINCOST 0x02 -#endif -#endif -#include <arpa/inet.h> -#include <net/if.h> -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <unistd.h> -#include <stdlib.h> -#include <netdb.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> -#include <fcntl.h> - -#ifdef __cplusplus -extern "C" { -#endif - -#include "asterisk/lock.h" -#include "asterisk/logger.h" -#include "asterisk/channel.h" -#include "asterisk/config.h" -#include "asterisk/module.h" -#include "asterisk/musiconhold.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" -#include "asterisk/stringfields.h" -#include "asterisk/abstract_jb.h" -#include "asterisk/astobj.h" - -#ifdef __cplusplus -} -#endif - -#include "h323/chan_h323.h" - -receive_digit_cb on_receive_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; -setpeercapabilities_cb on_setpeercapabilities; - -/* global debug flag */ -int h323debug; - -/*! Global jitterbuffer configuration - by default, jb is disabled */ -static struct ast_jb_conf default_jbconf = -{ - .flags = 0, - .max_size = -1, - .resync_threshold = -1, - .impl = "" -}; -static struct ast_jb_conf global_jbconf; - -/** Variables required by Asterisk */ -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; - -#define GLOBAL_CAPABILITY (AST_FORMAT_G723_1 | AST_FORMAT_GSM | AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_G729A | AST_FORMAT_H261) - -/** 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 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 acceptAnonymous = 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 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 */ - int newdigit; /* Pending DTMF digit to send */ - int newduration; /* Pending DTMF digit duration to send */ - int pref_codec; /* Preferred codec */ - int peercapability; /* Capabilities learned from peer */ - int jointcapability; /* Common capabilities for local and remote side */ - struct ast_codec_pref peer_prefs; /* Preferenced list of codecs which remote side supports */ - int dtmf_pt; /* Payload code used for RFC2833 messages */ - int curDTMF; /* DTMF tone being generated to Asterisk side */ - int DTMFsched; /* Scheduler descriptor for DTMF */ - int update_rtp_info; /* Configuration of fd's array is pending */ - int recvonly; /* Peer isn't wish to receive our voice stream */ - int txDtmfDigit; /* DTMF digit being to send to H.323 side */ - int noInbandDtmf; /* Inband DTMF processing by DSP isn't available */ - int connection_established; /* Call got CONNECT message */ - int got_progress; /* Call got PROGRESS message, pass inband audio */ - struct oh323_pvt *next; /* Next channel in list */ -} *iflist = NULL; - -static struct ast_user_list { - ASTOBJ_CONTAINER_COMPONENTS(struct oh323_user); -} userl; - -static struct ast_peer_list { - ASTOBJ_CONTAINER_COMPONENTS(struct oh323_peer); -} peerl; - -static struct ast_alias_list { - ASTOBJ_CONTAINER_COMPONENTS(struct oh323_alias); -} 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); - -/* 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_begin(struct ast_channel *c, char digit); -static int oh323_digit_end(struct ast_channel *c, char digit, unsigned int duration); -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, const void *data, size_t datalen); -static int oh323_fixup(struct ast_channel *oldchan, struct ast_channel *newchan); - -static const struct ast_channel_tech oh323_tech = { - .type = "H323", - .description = tdesc, - .capabilities = ((AST_FORMAT_MAX_AUDIO << 1) - 1), - .properties = AST_CHAN_TP_WANTSJITTER | AST_CHAN_TP_CREATESJITTER, - .requester = oh323_request, - .send_digit_begin = oh323_digit_begin, - .send_digit_end = oh323_digit_end, - .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 -}; - -static const char* redirectingreason2str(int redirectingreason) -{ - switch (redirectingreason) { - case 0: - return "UNKNOWN"; - case 1: - return "BUSY"; - case 2: - return "NO_REPLY"; - case 0xF: - return "UNCONDITIONAL"; - default: - return "NOREDIRECT"; - } -} - -static void oh323_destroy_alias(struct oh323_alias *alias) -{ - if (h323debug) - ast_log(LOG_DEBUG, "Destroying alias '%s'\n", alias->name); - free(alias); -} - -static void oh323_destroy_user(struct oh323_user *user) -{ - if (h323debug) - ast_log(LOG_DEBUG, "Destroying user '%s'\n", user->name); - ast_free_ha(user->ha); - free(user); -} - -static void oh323_destroy_peer(struct oh323_peer *peer) -{ - if (h323debug) - ast_log(LOG_DEBUG, "Destroying peer '%s'\n", peer->name); - ast_free_ha(peer->ha); - free(peer); -} - -static int oh323_simulate_dtmf_end(const void *data) -{ - struct oh323_pvt *pvt = (struct oh323_pvt *)data; - - if (pvt) { - ast_mutex_lock(&pvt->lock); - /* Don't hold pvt lock while trying to lock the channel */ - while(pvt->owner && ast_channel_trylock(pvt->owner)) { - ast_mutex_unlock(&pvt->lock); - usleep(1); - ast_mutex_lock(&pvt->lock); - } - - if (pvt->owner) { - struct ast_frame f = { - .frametype = AST_FRAME_DTMF_END, - .subclass = pvt->curDTMF, - .samples = 0, - .src = "SIMULATE_DTMF_END", - }; - ast_queue_frame(pvt->owner, &f); - ast_channel_unlock(pvt->owner); - } - - pvt->DTMFsched = -1; - ast_mutex_unlock(&pvt->lock); - } - - return 0; -} - -/* 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 = pvt->newdigit = pvt->DTMFsched = -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; - } - if (pvt->newdigit >= 0) { - struct ast_frame f = { - .frametype = AST_FRAME_DTMF_END, - .subclass = pvt->newdigit, - .samples = pvt->newduration * 8, - .len = pvt->newduration, - .src = "UPDATE_INFO", - }; - if (pvt->newdigit == ' ') { /* signalUpdate message */ - f.subclass = pvt->curDTMF; - if (pvt->DTMFsched >= 0) { - AST_SCHED_DEL(sched, pvt->DTMFsched); - } - } else { /* Regular input or signal message */ - if (pvt->newduration) { /* This is a signal, signalUpdate follows */ - f.frametype = AST_FRAME_DTMF_BEGIN; - AST_SCHED_DEL(sched, pvt->DTMFsched); - pvt->DTMFsched = ast_sched_add(sched, pvt->newduration, oh323_simulate_dtmf_end, pvt); - if (h323debug) - ast_log(LOG_DTMF, "Scheduled DTMF END simulation for %d ms, id=%d\n", pvt->newduration, pvt->DTMFsched); - } - pvt->curDTMF = pvt->newdigit; - } - ast_queue_frame(c, &f); - pvt->newdigit = -1; - } - if (pvt->update_rtp_info > 0) { - if (pvt->rtp) { - ast_jb_configure(c, &global_jbconf); - c->fds[0] = ast_rtp_fd(pvt->rtp); - c->fds[1] = ast_rtcp_fd(pvt->rtp); - ast_queue_frame(pvt->owner, &ast_null_frame); /* Tell Asterisk to apply changes */ - } - pvt->update_rtp_info = -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; - } - if (cd->redirect_number) { - free(cd->redirect_number); - cd->redirect_number = NULL; - } -} - -static void __oh323_destroy(struct oh323_pvt *pvt) -{ - struct oh323_pvt *cur, *prev = NULL; - - AST_SCHED_DEL(sched, pvt->DTMFsched); - - 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_channel_lock(pvt->owner); - if (h323debug) - ast_log(LOG_DEBUG, "Detaching from %s\n", pvt->owner->name); - pvt->owner->tech_pvt = NULL; - ast_channel_unlock(pvt->owner); - } - 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_unlock(&pvt->lock); - ast_mutex_destroy(&pvt->lock); - free(pvt); - } -} - -static void oh323_destroy(struct oh323_pvt *pvt) -{ - if (h323debug) { - ast_log(LOG_DEBUG, "Destroying channel %s\n", (pvt->owner ? pvt->owner->name : "<unknown>")); - } - ast_mutex_lock(&iflock); - ast_mutex_lock(&pvt->lock); - __oh323_destroy(pvt); - ast_mutex_unlock(&iflock); -} - -static int oh323_digit_begin(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) && (pvt->dtmf_pt > 0)) { - /* out-of-band DTMF */ - if (h323debug) { - ast_log(LOG_DTMF, "Begin sending out-of-band digit %c on %s\n", digit, c->name); - } - ast_rtp_senddigit_begin(pvt->rtp, digit); - ast_mutex_unlock(&pvt->lock); - } else if (pvt->txDtmfDigit != digit) { - /* in-band DTMF */ - if (h323debug) { - ast_log(LOG_DTMF, "Begin sending inband digit %c on %s\n", digit, c->name); - } - pvt->txDtmfDigit = digit; - token = pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL; - ast_mutex_unlock(&pvt->lock); - h323_send_tone(token, digit); - if (token) { - free(token); - } - } else - ast_mutex_unlock(&pvt->lock); - oh323_update_info(c); - return 0; -} - -/** - * Send (play) the specified digit to the channel. - * - */ -static int oh323_digit_end(struct ast_channel *c, char digit, unsigned int duration) -{ - 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) && (pvt->dtmf_pt > 0)) { - /* out-of-band DTMF */ - if (h323debug) { - ast_log(LOG_DTMF, "End sending out-of-band digit %c on %s, duration %d\n", digit, c->name, duration); - } - ast_rtp_senddigit_end(pvt->rtp, digit); - ast_mutex_unlock(&pvt->lock); - } else { - /* in-band DTMF */ - if (h323debug) { - ast_log(LOG_DTMF, "End sending inband digit %c on %s, duration %d\n", digit, c->name, duration); - } - pvt->txDtmfDigit = ' '; - token = pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL; - ast_mutex_unlock(&pvt->lock); - h323_send_tone(token, ' '); - if (token) { - free(token); - } - } - 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; - const char *addr; - 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 (!gatekeeper_disable) { - if (ast_strlen_zero(pvt->exten)) { - ast_copy_string(called_addr, dest, sizeof(called_addr)); - } else { - snprintf(called_addr, sizeof(called_addr), "%s@%s", pvt->exten, dest); - } - } else { - res = htons(pvt->sa.sin_port); - addr = ast_inet_ntoa(pvt->sa.sin_addr); - 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) - ast_copy_string(pvt->options.cid_num, c->cid.cid_num, sizeof(pvt->options.cid_num)); - - if (c->cid.cid_name) - ast_copy_string(pvt->options.cid_name, c->cid.cid_name, sizeof(pvt->options.cid_name)); - - if (c->cid.cid_rdnis) { - ast_copy_string(pvt->options.cid_rdnis, c->cid.cid_rdnis, sizeof(pvt->options.cid_rdnis)); - } - - pvt->options.presentation = c->cid.cid_pres; - pvt->options.type_of_number = c->cid.cid_ton; - - if ((addr = pbx_builtin_getvar_helper(c, "PRIREDIRECTREASON"))) { - if (!strcasecmp(addr, "UNKNOWN")) - pvt->options.redirect_reason = 0; - else if (!strcasecmp(addr, "BUSY")) - pvt->options.redirect_reason = 1; - else if (!strcasecmp(addr, "NO_REPLY")) - pvt->options.redirect_reason = 2; - else if (!strcasecmp(addr, "UNCONDITIONAL")) - pvt->options.redirect_reason = 15; - else - pvt->options.redirect_reason = -1; - } else - pvt->options.redirect_reason = -1; - - pvt->options.transfer_capability = c->transfercapability; - - /* indicate that this is an outgoing call */ - pvt->outgoing = 1; - - if (option_verbose > 2) - ast_verbose(VERBOSE_PREFIX_3 "Requested transfer capability: 0x%.2x - %s\n", c->transfercapability, ast_transfercapability2str(c->transfercapability)); - if (h323debug) - 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 q931cause = AST_CAUSE_NORMAL_CLEARING; - char *call_token; - - - if (h323debug) - ast_log(LOG_DEBUG, "Hanging up and scheduling destroy of call %s\n", c->name); - - if (!c->tech_pvt) { - ast_log(LOG_WARNING, "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; - } - - pvt->owner = NULL; - c->tech_pvt = NULL; - - if (c->hangupcause) { - q931cause = c->hangupcause; - } else { - const 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_WARNING, "ClearCall failed.\n"); - } - free(call_token); - ast_mutex_lock(&pvt->lock); - } - } - pvt->needdestroy = 1; - ast_mutex_unlock(&pvt->lock); - - /* Update usage counter */ - ast_module_unref(ast_module_info->self); - - 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; - - /* 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 &ast_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_channel_trylock(pvt->owner)) { - ast_log(LOG_NOTICE, "Format changed but channel is locked. Ignoring frame...\n"); - return &ast_null_frame; - } - if (h323debug) - 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_channel_unlock(pvt->owner); - } - /* Do in-band DTMF detection */ - if ((pvt->options.dtmfmode & H323_DTMF_INBAND) && pvt->vad) { - if ((pvt->nativeformats & (AST_FORMAT_SLINEAR | AST_FORMAT_ALAW | AST_FORMAT_ULAW))) { - if (!ast_channel_trylock(pvt->owner)) { - f = ast_dsp_process(pvt->owner, pvt->vad, f); - ast_channel_unlock(pvt->owner); - } - else - ast_log(LOG_NOTICE, "Unable to process inband DTMF while channel is locked\n"); - } else if (pvt->nativeformats && !pvt->noInbandDtmf) { - ast_log(LOG_NOTICE, "Inband DTMF is not supported on codec %s. Use RFC2833\n", ast_getformatname(f->subclass)); - pvt->noInbandDtmf = 1; - } - if (f &&(f->frametype == AST_FRAME_DTMF)) { - if (h323debug) - ast_log(LOG_DTMF, "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); - switch(c->fdno) { - case 0: - fr = oh323_rtp_read(pvt); - break; - case 1: - if (pvt->rtp) - fr = ast_rtcp_read(pvt->rtp); - else - fr = &ast_null_frame; - break; - default: - ast_log(LOG_ERROR, "Unable to handle fd %d on channel %s\n", c->fdno, c->name); - fr = &ast_null_frame; - break; - } - 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 && !pvt->recvonly) - 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, const void *data, size_t datalen) -{ - - struct oh323_pvt *pvt = (struct oh323_pvt *) c->tech_pvt; - char *token = (char *)NULL; - int res = -1; - int got_progress; - - ast_mutex_lock(&pvt->lock); - token = (pvt->cd.call_token ? strdup(pvt->cd.call_token) : NULL); - got_progress = pvt->got_progress; - if (condition == AST_CONTROL_PROGRESS) - pvt->got_progress = 1; - else if ((condition == AST_CONTROL_BUSY) || (condition == AST_CONTROL_CONGESTION)) - pvt->alreadygone = 1; - 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); - res = (got_progress ? 0 : -1); /* Do not simulate any audio tones if we got PROGRESS message */ - } - break; - case AST_CONTROL_PROGRESS: - if (c->_state != AST_STATE_UP) { - /* Do not send PROGRESS message more than once */ - if (!got_progress) - h323_send_progress(token); - res = 0; - } - break; - case AST_CONTROL_BUSY: - if (c->_state != AST_STATE_UP) { - h323_answering_call(token, 1); - ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV); - res = 0; - } - break; - case AST_CONTROL_CONGESTION: - if (c->_state != AST_STATE_UP) { - h323_answering_call(token, 1); - ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV); - res = 0; - } - break; - case AST_CONTROL_HOLD: - ast_moh_start(c, data, NULL); - res = 0; - break; - case AST_CONTROL_UNHOLD: - ast_moh_stop(c); - res = 0; - break; - case AST_CONTROL_SRCUPDATE: - ast_rtp_new_source(pvt->rtp); - res = 0; - break; - case AST_CONTROL_PROCEEDING: - case -1: - break; - default: - ast_log(LOG_WARNING, "OH323: Don't know how to indicate condition %d on %s\n", condition, token); - break; - } - - if (h323debug) - ast_log(LOG_DEBUG, "OH323: Indicated %d on %s, res=%d\n", condition, token, res); - if (token) - free(token); - oh323_update_info(c); - - return res; -} - -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; -} - -static int __oh323_rtp_create(struct oh323_pvt *pvt) -{ - struct in_addr our_addr; - - if (pvt->rtp) - return 0; - - if (ast_find_ourip(&our_addr, bindaddr)) { - ast_mutex_unlock(&pvt->lock); - ast_log(LOG_ERROR, "Unable to locate local IP address for RTP stream\n"); - return -1; - } - pvt->rtp = ast_rtp_new_with_bindaddr(sched, io, 1, 0, our_addr); - if (!pvt->rtp) { - ast_mutex_unlock(&pvt->lock); - ast_log(LOG_WARNING, "Unable to create RTP session: %s\n", strerror(errno)); - return -1; - } - if (h323debug) - ast_log(LOG_DEBUG, "Created RTP channel\n"); - - ast_rtp_settos(pvt->rtp, tos); - - if (h323debug) - ast_log(LOG_DEBUG, "Setting NAT on RTP to %d\n", pvt->options.nat); - ast_rtp_setnat(pvt->rtp, pvt->options.nat); - - if (pvt->dtmf_pt > 0) - ast_rtp_set_rtpmap_type(pvt->rtp, pvt->dtmf_pt, "audio", "telephone-event", 0); - - if (pvt->peercapability) - ast_rtp_codec_setpref(pvt->rtp, &pvt->peer_prefs); - - if (pvt->owner && !ast_channel_trylock(pvt->owner)) { - ast_jb_configure(pvt->owner, &global_jbconf); - pvt->owner->fds[0] = ast_rtp_fd(pvt->rtp); - pvt->owner->fds[1] = ast_rtcp_fd(pvt->rtp); - ast_queue_frame(pvt->owner, &ast_null_frame); /* Tell Asterisk to apply changes */ - ast_channel_unlock(pvt->owner); - } else - pvt->update_rtp_info = 1; - - 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; - char *cid_num, *cid_name; - int fmt; - - if (!ast_strlen_zero(pvt->options.cid_num)) - cid_num = pvt->options.cid_num; - else - cid_num = pvt->cd.call_source_e164; - - if (!ast_strlen_zero(pvt->options.cid_name)) - cid_name = pvt->options.cid_name; - else - cid_name = pvt->cd.call_source_name; - - /* Don't hold a oh323_pvt lock while we allocate a chanel */ - ast_mutex_unlock(&pvt->lock); - ch = ast_channel_alloc(1, state, cid_num, cid_name, pvt->accountcode, pvt->exten, pvt->context, pvt->amaflags, "H323/%s", host); - /* Update usage counter */ - ast_module_ref(ast_module_info->self); - ast_mutex_lock(&pvt->lock); - if (ch) { - ch->tech = &oh323_tech; - if (!(fmt = pvt->jointcapability) && !(fmt = pvt->options.capability)) - fmt = global_options.capability; - ch->nativeformats = ast_codec_choose(&pvt->options.prefs, fmt, 1)/* | (pvt->jointcapability & AST_FORMAT_VIDEO_MASK)*/; - pvt->nativeformats = ch->nativeformats; - fmt = ast_best_codec(ch->nativeformats); - ch->writeformat = fmt; - ch->rawwriteformat = fmt; - ch->readformat = fmt; - ch->rawreadformat = fmt; -#if 0 - ch->fds[0] = ast_rtp_fd(pvt->rtp); - ch->fds[1] = ast_rtcp_fd(pvt->rtp); -#endif -#ifdef VIDEO_SUPPORT - if (pvt->vrtp) { - ch->fds[2] = ast_rtp_fd(pvt->vrtp); - ch->fds[3] = ast_rtcp_fd(pvt->vrtp); - } -#endif -#ifdef T38_SUPPORT - if (pvt->udptl) { - ch->fds[4] = ast_udptl_fd(pvt->udptl); - } -#endif - if (state == AST_STATE_RING) { - ch->rings = 1; - } - /* 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; - - ast_copy_string(ch->context, pvt->context, sizeof(ch->context)); - ast_copy_string(ch->exten, pvt->exten, sizeof(ch->exten)); - ch->priority = 1; - if (!ast_strlen_zero(pvt->accountcode)) { - ast_string_field_set(ch, accountcode, pvt->accountcode); - } - if (pvt->amaflags) { - ch->amaflags = pvt->amaflags; - } - - /* Don't use ast_set_callerid() here because it will - * generate a needless NewCallerID event */ - ch->cid.cid_ani = ast_strdup(cid_num); - - if (pvt->cd.redirect_reason >= 0) { - ch->cid.cid_rdnis = ast_strdup(pvt->cd.redirect_number); - pbx_builtin_setvar_helper(ch, "PRIREDIRECTREASON", redirectingreason2str(pvt->cd.redirect_reason)); - } - ch->cid.cid_pres = pvt->cd.presentation; - ch->cid.cid_ton = pvt->cd.type_of_number; - - if (!ast_strlen_zero(pvt->exten) && strcmp(pvt->exten, "s")) { - ch->cid.cid_dnid = strdup(pvt->exten); - } - if (pvt->cd.transfer_capability >= 0) - ch->transfercapability = pvt->cd.transfer_capability; - 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->cd.redirect_reason = -1; - pvt->cd.transfer_capability = -1; - /* Ensure the call token is allocated for outgoing call */ - if (!callid) { - 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"); - ast_rtp_destroy(pvt->rtp); - free(pvt); - return NULL; - } - memset((char *)(pvt->cd).call_token, 0, 128); - pvt->cd.call_reference = callid; - } - memcpy(&pvt->options, &global_options, sizeof(pvt->options)); - pvt->jointcapability = pvt->options.capability; - if (pvt->options.dtmfmode & H323_DTMF_RFC2833) { - pvt->nonCodecCapability |= AST_RTP_DTMF; - } else { - pvt->nonCodecCapability &= ~AST_RTP_DTMF; - } - ast_copy_string(pvt->context, default_context, sizeof(pvt->context)); - pvt->newstate = pvt->newcontrol = pvt->newdigit = pvt->update_rtp_info = pvt->DTMFsched = -1; - ast_mutex_init(&pvt->lock); - /* 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) && (pvt->cd.call_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_channel_trylock(pvt->owner)) { - if (state >= 0) - ast_setstate(pvt->owner, state); - if (signal >= 0) - ast_queue_control(pvt->owner, signal); - ast_channel_unlock(pvt->owner); - return 1; - } - else { - if (state >= 0) - pvt->newstate = state; - if (signal >= 0) - pvt->newcontrol = signal; - return 0; - } -} - -static struct oh323_alias *build_alias(const char *name, struct ast_variable *v, struct ast_variable *alt, int realtime) -{ - struct oh323_alias *alias; - int found = 0; - - alias = ASTOBJ_CONTAINER_FIND_UNLINK_FULL(&aliasl, name, name, 0, 0, strcasecmp); - - if (alias) - found++; - else { - if (!(alias = (struct oh323_alias *)calloc(1, sizeof(*alias)))) - return NULL; - ASTOBJ_INIT(alias); - } - if (!found && name) - ast_copy_string(alias->name, name, sizeof(alias->name)); - for (; v || ((v = alt) && !(alt = NULL)); v = v->next) { - if (!strcasecmp(v->name, "e164")) { - ast_copy_string(alias->e164, v->value, sizeof(alias->e164)); - } else if (!strcasecmp(v->name, "prefix")) { - ast_copy_string(alias->prefix, v->value, sizeof(alias->prefix)); - } else if (!strcasecmp(v->name, "context")) { - ast_copy_string(alias->context, v->value, sizeof(alias->context)); - } else if (!strcasecmp(v->name, "secret")) { - ast_copy_string(alias->secret, v->value, sizeof(alias->secret)); - } else { - if (strcasecmp(v->value, "h323")) { - ast_log(LOG_WARNING, "Keyword %s does not make sense in type=h323\n", v->name); - } - } - } - ASTOBJ_UNMARK(alias); - return alias; -} - -static struct oh323_alias *realtime_alias(const char *alias) -{ - struct ast_variable *var, *tmp; - struct oh323_alias *a; - - var = ast_load_realtime("h323", "name", alias, NULL); - - if (!var) - return NULL; - - for (tmp = var; tmp; tmp = tmp->next) { - if (!strcasecmp(tmp->name, "type") && - !(!strcasecmp(tmp->value, "alias") || !strcasecmp(tmp->value, "h323"))) { - ast_variables_destroy(var); - return NULL; - } - } - - a = build_alias(alias, var, NULL, 1); - - ast_variables_destroy(var); - - return a; -} - -#define DEPRECATED(_v, _new_opt) \ - ast_log(LOG_WARNING, "Option %s found at line %d has beed deprecated. Use %s instead.\n", (_v)->name, (_v)->lineno, (_new_opt)) - -static int update_common_options(struct ast_variable *v, struct call_options *options) -{ - int tmp; - - if (!strcasecmp(v->name, "allow")) { - ast_parse_allow_disallow(&options->prefs, &options->capability, v->value, 1); - } else if (!strcasecmp(v->name, "disallow")) { - ast_parse_allow_disallow(&options->prefs, &options->capability, v->value, 0); - } 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 %s value %s at line %d\n", v->name, v->value, v->lineno); - 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")) { - DEPRECATED(v, "fastStart"); - options->fastStart = !ast_true(v->value); - } else if (!strcasecmp(v->name, "fastStart")) { - options->fastStart = ast_true(v->value); - } else if (!strcasecmp(v->name, "noH245Tunneling")) { - DEPRECATED(v, "h245Tunneling"); - options->h245Tunneling = !ast_true(v->value); - } else if (!strcasecmp(v->name, "h245Tunneling")) { - options->h245Tunneling = ast_true(v->value); - } else if (!strcasecmp(v->name, "noSilenceSuppression")) { - DEPRECATED(v, "silenceSuppression"); - options->silenceSuppression = !ast_true(v->value); - } else if (!strcasecmp(v->name, "silenceSuppression")) { - options->silenceSuppression = 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 %s for %s at line %d, assuming 0\n", v->value, v->name, v->lineno); - tmp = 0; - } - options->progress_setup = tmp; - } else if (!strcasecmp(v->name, "progress_alert")) { - tmp = atoi(v->value); - if ((tmp != 0) && (tmp != 1) && (tmp != 8)) { - ast_log(LOG_WARNING, "Invalid value %s for %s at line %d, assuming 0\n", v->value, v->name, v->lineno); - tmp = 0; - } - options->progress_alert = tmp; - } else if (!strcasecmp(v->name, "progress_audio")) { - options->progress_audio = ast_true(v->value); - } else if (!strcasecmp(v->name, "callerid")) { - ast_callerid_split(v->value, options->cid_name, sizeof(options->cid_name), options->cid_num, sizeof(options->cid_num)); - } else if (!strcasecmp(v->name, "fullname")) { - ast_copy_string(options->cid_name, v->value, sizeof(options->cid_name)); - } else if (!strcasecmp(v->name, "cid_number")) { - ast_copy_string(options->cid_num, v->value, sizeof(options->cid_num)); - } else if (!strcasecmp(v->name, "tunneling")) { - if (!strcasecmp(v->value, "none")) - options->tunnelOptions = 0; - else if (!strcasecmp(v->value, "cisco")) - options->tunnelOptions |= H323_TUNNEL_CISCO; - else if (!strcasecmp(v->value, "qsig")) - options->tunnelOptions |= H323_TUNNEL_QSIG; - else - ast_log(LOG_WARNING, "Invalid value %s for %s at line %d\n", v->value, v->name, v->lineno); - } else - return 1; - - return 0; -} -#undef DEPRECATED - -static struct oh323_user *build_user(char *name, struct ast_variable *v, struct ast_variable *alt, int realtime) -{ - struct oh323_user *user; - struct ast_ha *oldha; - int found = 0; - int format; - - user = ASTOBJ_CONTAINER_FIND_UNLINK_FULL(&userl, name, name, 0, 0, strcmp); - - if (user) - found++; - else { - if (!(user = (struct oh323_user *)calloc(1, sizeof(*user)))) - return NULL; - ASTOBJ_INIT(user); - } - oldha = user->ha; - user->ha = (struct ast_ha *)NULL; - memcpy(&user->options, &global_options, sizeof(user->options)); - /* Set default context */ - ast_copy_string(user->context, default_context, sizeof(user->context)); - if (user && !found) - ast_copy_string(user->name, name, sizeof(user->name)); - -#if 0 /* XXX Port channel variables functionality from chan_sip XXX */ - if (user->chanvars) { - ast_variables_destroy(user->chanvars); - user->chanvars = NULL; - } -#endif - - for (; v || ((v = alt) && !(alt = NULL)); v = v->next) { - if (!update_common_options(v, &user->options)) - continue; - if (!strcasecmp(v->name, "context")) { - ast_copy_string(user->context, v->value, sizeof(user->context)); - } else if (!strcasecmp(v->name, "secret")) { - ast_copy_string(user->secret, v->value, sizeof(user->secret)); - } else if (!strcasecmp(v->name, "accountcode")) { - ast_copy_string(user->accountcode, v->value, sizeof(user->accountcode)); - } 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"); - ASTOBJ_UNREF(user, oh323_destroy_user); - return NULL; - } else if (ast_get_ip(&user->addr, v->value)) { - ASTOBJ_UNREF(user, oh323_destroy_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; - } - } else if (!strcasecmp(v->name, "permit") || - !strcasecmp(v->name, "deny")) { - user->ha = ast_append_ha(v->name, v->value, user->ha); - } - } - ASTOBJ_UNMARK(user); - ast_free_ha(oldha); - return user; -} - -static struct oh323_user *realtime_user(const call_details_t *cd) -{ - struct ast_variable *var, *tmp; - struct oh323_user *user; - char *username; - - if (userbyalias) - var = ast_load_realtime("h323", "name", username = cd->call_source_aliases, NULL); - else { - username = (char *)NULL; - var = ast_load_realtime("h323", "host", cd->sourceIp, NULL); - } - - if (!var) - return NULL; - - for (tmp = var; tmp; tmp = tmp->next) { - if (!strcasecmp(tmp->name, "type") && - !(!strcasecmp(tmp->value, "user") || !strcasecmp(tmp->value, "friend"))) { - ast_variables_destroy(var); - return NULL; - } else if (!username && !strcasecmp(tmp->name, "name")) - username = tmp->value; - } - - if (!username) { - ast_log(LOG_WARNING, "Cannot determine user name for IP address %s\n", cd->sourceIp); - ast_variables_destroy(var); - return NULL; - } - - user = build_user(username, var, NULL, 1); - - ast_variables_destroy(var); - - return user; -} - -static struct oh323_peer *build_peer(const char *name, struct ast_variable *v, struct ast_variable *alt, int realtime) -{ - struct oh323_peer *peer; - struct ast_ha *oldha; - int found = 0; - - peer = ASTOBJ_CONTAINER_FIND_UNLINK_FULL(&peerl, name, name, 0, 0, strcmp); - - if (peer) - found++; - else { - if (!(peer = (struct oh323_peer*)calloc(1, sizeof(*peer)))) - return NULL; - ASTOBJ_INIT(peer); - } - oldha = peer->ha; - peer->ha = NULL; - memcpy(&peer->options, &global_options, sizeof(peer->options)); - peer->addr.sin_port = htons(h323_signalling_port); - peer->addr.sin_family = AF_INET; - if (!found && name) - ast_copy_string(peer->name, name, sizeof(peer->name)); - -#if 0 /* XXX Port channel variables functionality from chan_sip XXX */ - if (peer->chanvars) { - ast_variables_destroy(peer->chanvars); - peer->chanvars = NULL; - } -#endif - /* Default settings for mailbox */ - peer->mailbox[0] = '\0'; - - for (; v || ((v = alt) && !(alt = NULL)); v = v->next) { - if (!update_common_options(v, &peer->options)) - continue; - if (!strcasecmp(v->name, "host")) { - if (!strcasecmp(v->value, "dynamic")) { - ast_log(LOG_ERROR, "Dynamic host configuration not implemented.\n"); - ASTOBJ_UNREF(peer, oh323_destroy_peer); - return NULL; - } - if (ast_get_ip(&peer->addr, v->value)) { - ast_log(LOG_ERROR, "Could not determine IP for %s\n", v->value); - ASTOBJ_UNREF(peer, oh323_destroy_peer); - return NULL; - } - } else if (!strcasecmp(v->name, "port")) { - peer->addr.sin_port = htons(atoi(v->value)); - } else if (!strcasecmp(v->name, "permit") || - !strcasecmp(v->name, "deny")) { - peer->ha = ast_append_ha(v->name, v->value, peer->ha); - } else if (!strcasecmp(v->name, "mailbox")) { - ast_copy_string(peer->mailbox, v->value, sizeof(peer->mailbox)); - } else if (!strcasecmp(v->name, "hasvoicemail")) { - if (ast_true(v->value) && ast_strlen_zero(peer->mailbox)) { - ast_copy_string(peer->mailbox, name, sizeof(peer->mailbox)); - } - } - } - ASTOBJ_UNMARK(peer); - ast_free_ha(oldha); - return peer; -} - -static struct oh323_peer *realtime_peer(const char *peername, struct sockaddr_in *sin) -{ - struct oh323_peer *peer; - struct ast_variable *var; - struct ast_variable *tmp; - const char *addr; - - /* First check on peer name */ - if (peername) - var = ast_load_realtime("h323", "name", peername, addr = NULL); - else if (sin) /* Then check on IP address for dynamic peers */ - var = ast_load_realtime("h323", "host", addr = ast_inet_ntoa(sin->sin_addr), NULL); - else - return NULL; - - if (!var) - return NULL; - - for (tmp = var; tmp; tmp = tmp->next) { - /* If this is type=user, then skip this object. */ - if (!strcasecmp(tmp->name, "type") && - !(!strcasecmp(tmp->value, "peer") || !strcasecmp(tmp->value, "friend"))) { - ast_variables_destroy(var); - return NULL; - } else if (!peername && !strcasecmp(tmp->name, "name")) { - peername = tmp->value; - } - } - - if (!peername) { /* Did not find peer in realtime */ - ast_log(LOG_WARNING, "Cannot determine peer name for IP address %s\n", addr); - ast_variables_destroy(var); - return NULL; - } - - /* Peer found in realtime, now build it in memory */ - peer = build_peer(peername, var, NULL, 1); - - ast_variables_destroy(var); - - return peer; -} - -static int oh323_addrcmp_str(struct in_addr inaddr, char *addr) -{ - return strcmp(ast_inet_ntoa(inaddr), addr); -} - -static struct oh323_user *find_user(const call_details_t *cd, int realtime) -{ - struct oh323_user *u; - - if (userbyalias) - u = ASTOBJ_CONTAINER_FIND(&userl, cd->call_source_aliases); - else - u = ASTOBJ_CONTAINER_FIND_FULL(&userl, cd->sourceIp, addr.sin_addr, 0, 0, oh323_addrcmp_str); - - if (!u && realtime) - u = realtime_user(cd); - - if (!u && h323debug) - ast_log(LOG_DEBUG, "Could not find user by name %s or address %s\n", cd->call_source_aliases, cd->sourceIp); - - return u; -} - -static int oh323_addrcmp(struct sockaddr_in addr, struct sockaddr_in *sin) -{ - int res; - - if (!sin) - res = -1; - else - res = inaddrcmp(&addr , sin); - - return res; -} - -static struct oh323_peer *find_peer(const char *peer, struct sockaddr_in *sin, int realtime) -{ - struct oh323_peer *p; - - if (peer) - p = ASTOBJ_CONTAINER_FIND(&peerl, peer); - else - p = ASTOBJ_CONTAINER_FIND_FULL(&peerl, sin, addr, 0, 0, oh323_addrcmp); - - if (!p && realtime) - p = realtime_peer(peer, sin); - - if (!p && h323debug) - ast_log(LOG_DEBUG, "Could not find peer by name %s or address %s\n", (peer ? peer : "<NONE>"), (sin ? ast_inet_ntoa(sin->sin_addr) : "<NONE>")); - - 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] = ""; - - ast_copy_string(peer, opeer, sizeof(peer)); - port = strchr(peer, ':'); - if (port) { - *port = '\0'; - port++; - } - pvt->sa.sin_family = AF_INET; - p = find_peer(peer, NULL, 1); - if (p) { - found++; - memcpy(&pvt->options, &p->options, sizeof(pvt->options)); - pvt->jointcapability = pvt->options.capability; - 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; - } - ASTOBJ_UNREF(p, oh323_destroy_peer); - } - if (!p && !found) { - hostn = peer; - if (port) { - portno = atoi(port); - } else { - portno = h323_signalling_port; - } - hp = ast_gethostbyname(hostn, &ahp); - if (hp) { - memcpy(&pvt->sa.sin_addr, hp->h_addr, sizeof(pvt->sa.sin_addr)); - pvt->sa.sin_port = htons(portno); - /* Look peer by address */ - p = find_peer(NULL, &pvt->sa, 1); - memcpy(&pvt->options, (p ? &p->options : &global_options), sizeof(pvt->options)); - pvt->jointcapability = pvt->options.capability; - if (p) { - ASTOBJ_UNREF(p, oh323_destroy_peer); - } - if (pvt->options.dtmfmode) { - if (pvt->options.dtmfmode & H323_DTMF_RFC2833) { - pvt->nonCodecCapability |= AST_RTP_DTMF; - } else { - pvt->nonCodecCapability &= ~AST_RTP_DTMF; - } - } - return 0; - } else { - ast_log(LOG_WARNING, "No such host: %s\n", peer); - return -1; - } - } else if (!found) { - 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]; - - if (h323debug) - 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); - oh323_destroy(pvt); - if (cause) - *cause = AST_CAUSE_INCOMPATIBLE_DESTINATION; - return NULL; - } - ast_copy_string(tmp, dest, sizeof(tmp)); - host = strchr(tmp, '@'); - if (host) { - *host = '\0'; - host++; - ext = tmp; - } else { - ext = strrchr(tmp, '/'); - if (ext) - *ext++ = '\0'; - host = tmp; - } - strtok_r(host, "/", &(h323id)); - if (!ast_strlen_zero(h323id)) { - h323_set_id(h323id); - } - if (ext) { - ast_copy_string(pvt->exten, ext, sizeof(pvt->exten)); - } - if (h323debug) - ast_log(LOG_DEBUG, "Extension: %s Host: %s\n", pvt->exten, host); - - if (gatekeeper_disable) { - if (create_addr(pvt, host)) { - oh323_destroy(pvt); - if (cause) - *cause = AST_CAUSE_DESTINATION_OUT_OF_ORDER; - return NULL; - } - } - else { - memcpy(&pvt->options, &global_options, sizeof(pvt->options)); - pvt->jointcapability = pvt->options.capability; - 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); - if (cause) - *cause = AST_CAUSE_NORMAL_TEMPORARY_FAILURE; - } - ast_update_use_count(); - restart_monitor(); - return tmpc; -} - -/** Find a call by alias */ -static struct oh323_alias *find_alias(const char *source_aliases, int realtime) -{ - struct oh323_alias *a; - - a = ASTOBJ_CONTAINER_FIND(&aliasl, source_aliases); - - if (!a && realtime) - a = realtime_alias(source_aliases); - - return a; -} - -/** - * Callback for sending digits from H.323 up to asterisk - * - */ -static int receive_digit(unsigned call_reference, char digit, const char *token, int duration) -{ - struct oh323_pvt *pvt; - int res; - - pvt = find_call_locked(call_reference, token); - if (!pvt) { - ast_log(LOG_ERROR, "Received digit '%c' (%u ms) for call %s without private structure\n", digit, duration, token); - return -1; - } - if (h323debug) - ast_log(LOG_DTMF, "Received %s digit '%c' (%u ms) for call %s\n", (digit == ' ' ? "update for" : "new"), (digit == ' ' ? pvt->curDTMF : digit), duration, token); - - if (pvt->owner && !ast_channel_trylock(pvt->owner)) { - if (digit == '!') - res = ast_queue_control(pvt->owner, AST_CONTROL_FLASH); - else { - struct ast_frame f = { - .frametype = AST_FRAME_DTMF_END, - .subclass = digit, - .samples = duration * 8, - .len = duration, - .src = "SEND_DIGIT", - }; - if (digit == ' ') { /* signalUpdate message */ - f.subclass = pvt->curDTMF; - AST_SCHED_DEL(sched, pvt->DTMFsched); - } else { /* Regular input or signal message */ - if (pvt->DTMFsched >= 0) { - /* We still don't send DTMF END from previous event, send it now */ - AST_SCHED_DEL(sched, pvt->DTMFsched); - f.subclass = pvt->curDTMF; - f.samples = f.len = 0; - ast_queue_frame(pvt->owner, &f); - /* Restore values */ - f.subclass = digit; - f.samples = duration * 8; - f.len = duration; - } - if (duration) { /* This is a signal, signalUpdate follows */ - f.frametype = AST_FRAME_DTMF_BEGIN; - pvt->DTMFsched = ast_sched_add(sched, duration, oh323_simulate_dtmf_end, pvt); - if (h323debug) - ast_log(LOG_DTMF, "Scheduled DTMF END simulation for %d ms, id=%d\n", duration, pvt->DTMFsched); - } - pvt->curDTMF = digit; - } - res = ast_queue_frame(pvt->owner, &f); - } - ast_channel_unlock(pvt->owner); - } else { - if (digit == '!') - pvt->newcontrol = AST_CONTROL_FLASH; - else { - pvt->newduration = duration; - pvt->newdigit = digit; - } - res = 0; - } - 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 - */ -static 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; - } - if (!pvt->rtp) - __oh323_rtp_create(pvt); - if (!pvt->rtp) { - ast_mutex_unlock(&pvt->lock); - free(info); - ast_log(LOG_ERROR, "No RTP stream is available for call %s (%d)", 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_copy_string(info->addr, ast_inet_ntoa(us.sin_addr), sizeof(info->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 - */ -static 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; - int nativeformats_changed; - enum { NEED_NONE, NEED_HOLD, NEED_UNHOLD } rtp_change = NEED_NONE; - - 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; - } - - if (!pvt->rtp) - __oh323_rtp_create(pvt); - - them.sin_family = AF_INET; - /* only works for IPv4 */ - them.sin_addr.s_addr = inet_addr(remoteIp); - them.sin_port = htons(remotePort); - - if (them.sin_addr.s_addr) { - ast_rtp_set_peer(pvt->rtp, &them); - if (pvt->recvonly) { - pvt->recvonly = 0; - rtp_change = NEED_UNHOLD; - } - } else { - ast_rtp_stop(pvt->rtp); - if (!pvt->recvonly) { - pvt->recvonly = 1; - rtp_change = NEED_HOLD; - } - } - - /* Change native format to reflect information taken from OLC/OLCAck */ - nativeformats_changed = 0; - if (pt != 128 && pvt->rtp) { /* Payload type is invalid, so try to use previously decided */ - rtptype = ast_rtp_lookup_pt(pvt->rtp, pt); - if (h323debug) - ast_log(LOG_DEBUG, "Native format is set to %d from %d by RTP payload type %d\n", rtptype.code, pvt->nativeformats, pt); - if (pvt->nativeformats != rtptype.code) { - pvt->nativeformats = rtptype.code; - nativeformats_changed = 1; - } - } else if (h323debug) - ast_log(LOG_NOTICE, "Payload type is unknown, formats isn't changed\n"); - - /* Don't try to lock the channel if nothing changed */ - if (nativeformats_changed || pvt->options.progress_audio || (rtp_change != NEED_NONE)) { - if (pvt->owner && !ast_channel_trylock(pvt->owner)) { - /* Re-build translation path only if native format(s) has been changed */ - if (pvt->owner->nativeformats != pvt->nativeformats) { - if (h323debug) - ast_log(LOG_DEBUG, "Native format changed to %d from %d, read format is %d, write format is %d\n", pvt->nativeformats, pvt->owner->nativeformats, pvt->owner->readformat, pvt->owner->writeformat); - 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); - switch (rtp_change) { - case NEED_HOLD: - ast_queue_control(pvt->owner, AST_CONTROL_HOLD); - break; - case NEED_UNHOLD: - ast_queue_control(pvt->owner, AST_CONTROL_UNHOLD); - break; - default: - break; - } - ast_channel_unlock(pvt->owner); - } - else { - if (pvt->options.progress_audio) - pvt->newcontrol = AST_CONTROL_PROGRESS; - else if (rtp_change == NEED_HOLD) - pvt->newcontrol = AST_CONTROL_HOLD; - else if (rtp_change == NEED_UNHOLD) - pvt->newcontrol = AST_CONTROL_UNHOLD; - if (h323debug) - ast_log(LOG_DEBUG, "RTP connection preparation for %s is pending...\n", token); - } - } - 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 - */ -static 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; - } - /* Do not send ANSWER message more than once */ - if (!pvt->connection_established) { - pvt->connection_established = 1; - update_state(pvt, -1, AST_CONTROL_ANSWER); - } - ast_mutex_unlock(&pvt->lock); - return; -} - -static int progress(unsigned call_reference, const char *token, int inband) -{ - struct oh323_pvt *pvt; - - if (h323debug) - 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; - } - update_state(pvt, -1, (inband ? AST_CONTROL_PROGRESS : AST_CONTROL_RINGING)); - ast_mutex_unlock(&pvt->lock); - - return 0; -} - -/** - * Call-back function for incoming calls - * - * Returns 1 on success - */ -static call_options_t *setup_incoming_call(call_details_t *cd) -{ - struct oh323_pvt *pvt; - struct oh323_user *user = NULL; - struct oh323_alias *alias = NULL; - - 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"); - cleanup_call_details(cd); - 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)); - pvt->jointcapability = pvt->options.capability; - - 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); - if (pvt->cd.redirect_reason >= 0) - ast_verbose(VERBOSE_PREFIX_3 " \tRedirecting party number: [%s] (reason %d)\n", pvt->cd.redirect_number, pvt->cd.redirect_reason); - ast_verbose(VERBOSE_PREFIX_3 " \tCalling party IP: [%s]\n", pvt->cd.sourceIp); - } - - /* Decide if we are allowing Gatekeeper routed calls*/ - if ((!strcasecmp(cd->sourceIp, gatekeeper)) && (gkroute == -1) && !gatekeeper_disable) { - if (!ast_strlen_zero(cd->call_dest_e164)) { - ast_copy_string(pvt->exten, cd->call_dest_e164, sizeof(pvt->exten)); - ast_copy_string(pvt->context, default_context, sizeof(pvt->context)); - } else { - alias = find_alias(cd->call_dest_alias, 1); - if (!alias) { - ast_log(LOG_ERROR, "Call for %s rejected, alias not found\n", cd->call_dest_alias); - oh323_destroy(pvt); - return NULL; - } - ast_copy_string(pvt->exten, alias->name, sizeof(pvt->exten)); - ast_copy_string(pvt->context, alias->context, sizeof(pvt->context)); - } - } else { - /* Either this call is not from the Gatekeeper - or we are not allowing gk routed calls */ - user = find_user(cd, 1); - if (!user) { - if (!acceptAnonymous) { - ast_log(LOG_NOTICE, "Anonymous call from '%s@%s' rejected\n", pvt->cd.call_source_aliases, pvt->cd.sourceIp); - oh323_destroy(pvt); - return NULL; - } - if (ast_strlen_zero(default_context)) { - ast_log(LOG_ERROR, "Call from '%s@%s' rejected due to no default context\n", pvt->cd.call_source_aliases, pvt->cd.sourceIp); - oh323_destroy(pvt); - return NULL; - } - ast_copy_string(pvt->context, default_context, sizeof(pvt->context)); - if (!ast_strlen_zero(pvt->cd.call_dest_e164)) { - ast_copy_string(pvt->exten, cd->call_dest_e164, sizeof(pvt->exten)); - } else { - ast_copy_string(pvt->exten, cd->call_dest_alias, sizeof(pvt->exten)); - } - if (h323debug) - ast_log(LOG_DEBUG, "Sending %s@%s to context [%s] extension %s\n", cd->call_source_aliases, cd->sourceIp, pvt->context, pvt->exten); - } else { - if (user->host) { - if (strcasecmp(cd->sourceIp, ast_inet_ntoa(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); - oh323_destroy(pvt); - ASTOBJ_UNREF(user, oh323_destroy_user); - return NULL; - } - ast_copy_string(pvt->context, default_context, sizeof(pvt->context)); - } else { - ast_copy_string(pvt->context, user->context, sizeof(pvt->context)); - } - 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); - oh323_destroy(pvt); - ASTOBJ_UNREF(user, oh323_destroy_user); - return NULL; /* XXX: Hmmm... Why to setup context if we drop connection immediately??? */ - } - } - ast_copy_string(pvt->context, user->context, sizeof(pvt->context)); - memcpy(&pvt->options, &user->options, sizeof(pvt->options)); - pvt->jointcapability = pvt->options.capability; - if (!ast_strlen_zero(pvt->cd.call_dest_e164)) { - ast_copy_string(pvt->exten, cd->call_dest_e164, sizeof(pvt->exten)); - } else { - ast_copy_string(pvt->exten, cd->call_dest_alias, sizeof(pvt->exten)); - } - if (!ast_strlen_zero(user->accountcode)) { - ast_copy_string(pvt->accountcode, user->accountcode, sizeof(pvt->accountcode)); - } - if (user->amaflags) { - pvt->amaflags = user->amaflags; - } - ASTOBJ_UNREF(user, oh323_destroy_user); - } - } - 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; - enum {ext_original, ext_s, ext_i, ext_notexists} try_exten; - char tmp_exten[sizeof(pvt->exten)]; - - 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; - } - /* Check if requested extension@context pair exists in the dialplan */ - ast_copy_string(tmp_exten, pvt->exten, sizeof(tmp_exten)); - - /* Try to find best extension in specified context */ - if ((tmp_exten[0] != '\0') && (tmp_exten[1] == '\0')) { - if (tmp_exten[0] == 's') - try_exten = ext_s; - else if (tmp_exten[0] == 'i') - try_exten = ext_i; - else - try_exten = ext_original; - } else - try_exten = ext_original; - do { - if (ast_exists_extension(NULL, pvt->context, tmp_exten, 1, NULL)) - break; - switch (try_exten) { - case ext_original: - tmp_exten[0] = 's'; - tmp_exten[1] = '\0'; - try_exten = ext_s; - break; - case ext_s: - tmp_exten[0] = 'i'; - try_exten = ext_i; - break; - case ext_i: - try_exten = ext_notexists; - break; - default: - break; - } - } while (try_exten != ext_notexists); - - /* Drop the call if we don't have <exten>, s and i extensions */ - if (try_exten == ext_notexists) { - ast_log(LOG_NOTICE, "Dropping call because extensions '%s', 's' and 'i' doesn't exists in context [%s]\n", pvt->exten, pvt->context); - ast_mutex_unlock(&pvt->lock); - h323_clear_call(token, AST_CAUSE_UNALLOCATED); - return 0; - } else if ((try_exten != ext_original) && (strcmp(pvt->exten, tmp_exten) != 0)) { - if (h323debug) - ast_log(LOG_DEBUG, "Going to extension %s@%s because %s@%s isn't exists\n", tmp_exten, pvt->context, pvt->exten, pvt->context); - ast_copy_string(pvt->exten, tmp_exten, sizeof(pvt->exten)); - } - - /* 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 - */ -static 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 - */ -static 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; - } - update_state(pvt, AST_STATE_RINGING, AST_CONTROL_RINGING); - 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; - - if (h323debug) - 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_channel_trylock(pvt->owner)) - 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[0], pvt->owner->lock.reentrancy, pvt->owner->lock.func[0], pvt->owner->lock.file[0], pvt->owner->lock.lineno[0]); -#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_channel_unlock(pvt->owner); - } - 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; - - if (h323debug) { - ast_log(LOG_DEBUG, "Hanging up connection to %s with cause %d\n", token, cause); - } - - pvt = find_call_locked(call_reference, token); - if (!pvt) { - if (h323debug) { - ast_log(LOG_DEBUG, "Connection to %s already cleared\n", token); - } - return; - } - if (pvt->owner && !ast_channel_trylock(pvt->owner)) { - pvt->owner->_softhangup |= AST_SOFTHANGUP_DEV; - pvt->owner->hangupcause = pvt->hangupcause = cause; - ast_queue_hangup(pvt->owner); - ast_channel_unlock(pvt->owner); - } - else { - pvt->needhangup = 1; - pvt->hangupcause = cause; - if (h323debug) - ast_log(LOG_DEBUG, "Hangup for %s is pending\n", token); - } - ast_mutex_unlock(&pvt->lock); -} - -static 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", 0); - } - pvt->dtmf_pt = payload; - ast_mutex_unlock(&pvt->lock); - if (h323debug) - ast_log(LOG_DEBUG, "DTMF payload on %s set to %d\n", token, payload); -} - -static void set_peer_capabilities(unsigned call_reference, const char *token, int capabilities, struct ast_codec_pref *prefs) -{ - struct oh323_pvt *pvt; - - if (h323debug) - ast_log(LOG_DEBUG, "Got remote capabilities from connection %s\n", token); - - pvt = find_call_locked(call_reference, token); - if (!pvt) - return; - pvt->peercapability = capabilities; - pvt->jointcapability = pvt->options.capability & capabilities; - if (prefs) { - memcpy(&pvt->peer_prefs, prefs, sizeof(pvt->peer_prefs)); - if (h323debug) { - int i; - for (i = 0; i < 32; ++i) { - if (!prefs->order[i]) - break; - ast_log(LOG_DEBUG, "prefs[%d]=%s:%d\n", i, (prefs->order[i] ? ast_getformatname(1 << (prefs->order[i]-1)) : "<none>"), prefs->framing[i]); - } - } - if (pvt->rtp) - ast_rtp_codec_setpref(pvt->rtp, &pvt->peer_prefs); - } - ast_mutex_unlock(&pvt->lock); -} - -static void set_local_capabilities(unsigned call_reference, const char *token) -{ - struct oh323_pvt *pvt; - int capability, dtmfmode, pref_codec; - struct ast_codec_pref prefs; - - 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->jointcapability) ? pvt->jointcapability : pvt->options.capability; - dtmfmode = pvt->options.dtmfmode; - prefs = pvt->options.prefs; - pref_codec = pvt->pref_codec; - ast_mutex_unlock(&pvt->lock); - h323_set_capabilities(token, capability, dtmfmode, &prefs, pref_codec); - - 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 */ - if (!ast_mutex_trylock(&iflock)) { -#if 1 - do { - for (oh323 = iflist; oh323; oh323 = oh323->next) { - if (!ast_mutex_trylock(&oh323->lock)) { - if (oh323->needdestroy) { - __oh323_destroy(oh323); - break; - } - ast_mutex_unlock(&oh323->lock); - } - } - } while (/*oh323*/ 0); -#else -restartsearch: - oh323 = iflist; - while(oh323) { - if (!ast_mutex_trylock(&oh323->lock)) { - if (oh323->needdestroy) { - __oh323_destroy(oh323); - goto restartsearch; - } - ast_mutex_unlock(&oh323->lock); - oh323 = oh323->next; - } - } -#endif - ast_mutex_unlock(&iflock); - } else - oh323 = (struct oh323_pvt *)1; /* Force fast loop */ - pthread_testcancel(); - /* Wait for sched or io */ - res = ast_sched_wait(sched); - if ((res < 0) || (res > 1000)) { - res = 1000; - } - /* Do not wait if some channel(s) is destroyed, probably, more available too */ - if (oh323) - res = 1; - 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) -{ - /* If we're supposed to be stopped -- stay stopped */ - if (ast_mutex_lock(&monlock)) { - ast_log(LOG_WARNING, "Unable to lock monitor\n"); - return -1; - } - if (monitor_thread == AST_PTHREADT_STOP) { - ast_mutex_unlock(&monlock); - return 0; - } - 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 { - /* Start a new monitor */ - if (ast_pthread_create_background(&monitor_thread, NULL, do_monitor, NULL) < 0) { - monitor_thread = AST_PTHREADT_NULL; - 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 != 4) { - return RESULT_SHOWUSAGE; - } - h323_debug(1, atoi(argv[3])); - 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 || argc > 4) { - 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 || argc > 3) { - return RESULT_SHOWUSAGE; - } - h323debug = 1; - ast_cli(fd, "H.323 debug enabled\n"); - return RESULT_SUCCESS; -} - -static int h323_no_debug(int fd, int argc, char *argv[]) -{ - if (argc < 3 || argc > 4) { - return RESULT_SHOWUSAGE; - } - h323debug = 0; - ast_cli(fd, "H.323 debug disabled\n"); - return RESULT_SUCCESS; -} - -static int h323_gk_cycle(int fd, int argc, char *argv[]) -{ - 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"); - } - } - 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 <level num>\n" -" Enables H.323 stack tracing for debugging purposes\n"; - -static char no_trace_usage[] = -"Usage: h.323 trace off\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 debug off\n" -" Disables H.323 debug output\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 <token>\n" -" Manually try to hang up call identified by <token>\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 h323.conf\n"; - -static struct ast_cli_entry cli_h323_no_trace_deprecated = { - { "h.323", "no", "trace", NULL }, - h323_no_trace, "Disable H.323 Stack Tracing", - no_trace_usage }; - -static struct ast_cli_entry cli_h323_no_debug_deprecated = { - { "h.323", "no", "debug", NULL }, - h323_no_debug, "Disable H.323 debug", - no_debug_usage }; - -static struct ast_cli_entry cli_h323_debug_deprecated = { - { "h.323", "debug", NULL }, - h323_do_debug, "Enable H.323 debug", - debug_usage }; - -static struct ast_cli_entry cli_h323_trace_deprecated = { - { "h.323", "trace", NULL }, - h323_do_trace, "Enable H.323 Stack Tracing", - trace_usage }; - -static struct ast_cli_entry cli_h323_gk_cycle_deprecated = { - { "h.323", "gk", "cycle", NULL }, - h323_gk_cycle, "Manually re-register with the Gatekeper", - show_cycle_usage }; - -static struct ast_cli_entry cli_h323[] = { - { { "h323", "set", "trace", NULL }, - h323_do_trace, "Enable H.323 Stack Tracing", - trace_usage, NULL, &cli_h323_trace_deprecated }, - - { { "h323", "set", "trace", "off", NULL }, - h323_no_trace, "Disable H.323 Stack Tracing", - no_trace_usage, NULL, &cli_h323_no_trace_deprecated }, - - { { "h323", "set", "debug", NULL }, - h323_do_debug, "Enable H.323 debug", - debug_usage, NULL, &cli_h323_debug_deprecated }, - - { { "h323", "set", "debug", "off", NULL }, - h323_no_debug, "Disable H.323 debug", - no_debug_usage, NULL, &cli_h323_no_debug_deprecated }, - - { { "h323", "cycle", "gk", NULL }, - h323_gk_cycle, "Manually re-register with the Gatekeper", - show_cycle_usage, NULL, &cli_h323_gk_cycle_deprecated }, - - { { "h323", "hangup", NULL }, - h323_ep_hangup, "Manually try to hang up a call", - show_hangup_usage }, - - { { "h323", "show", "tokens", NULL }, - h323_tokens_show, "Show all active call tokens", - show_tokens_usage }, -}; - -static void delete_users(void) -{ - int pruned = 0; - - /* Delete all users */ - ASTOBJ_CONTAINER_WRLOCK(&userl); - ASTOBJ_CONTAINER_TRAVERSE(&userl, 1, do { - ASTOBJ_RDLOCK(iterator); - ASTOBJ_MARK(iterator); - ++pruned; - ASTOBJ_UNLOCK(iterator); - } while (0) ); - if (pruned) { - ASTOBJ_CONTAINER_PRUNE_MARKED(&userl, oh323_destroy_user); - } - ASTOBJ_CONTAINER_UNLOCK(&userl); - - ASTOBJ_CONTAINER_WRLOCK(&peerl); - ASTOBJ_CONTAINER_TRAVERSE(&peerl, 1, do { - ASTOBJ_RDLOCK(iterator); - ASTOBJ_MARK(iterator); - ASTOBJ_UNLOCK(iterator); - } while (0) ); - ASTOBJ_CONTAINER_UNLOCK(&peerl); -} - -static void delete_aliases(void) -{ - int pruned = 0; - - /* Delete all aliases */ - ASTOBJ_CONTAINER_WRLOCK(&aliasl); - ASTOBJ_CONTAINER_TRAVERSE(&aliasl, 1, do { - ASTOBJ_RDLOCK(iterator); - ASTOBJ_MARK(iterator); - ++pruned; - ASTOBJ_UNLOCK(iterator); - } while (0) ); - if (pruned) { - ASTOBJ_CONTAINER_PRUNE_MARKED(&aliasl, oh323_destroy_alias); - } - ASTOBJ_CONTAINER_UNLOCK(&aliasl); -} - -static void prune_peers(void) -{ - /* Prune peers who still are supposed to be deleted */ - ASTOBJ_CONTAINER_PRUNE_MARKED(&peerl, oh323_destroy_peer); -} - -static int reload_config(int is_reload) -{ - int format; - struct ast_config *cfg, *ucfg; - 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; - const char *utype; - int is_user, is_peer, is_alias; - char _gatekeeper[100]; - int gk_discover, gk_disable, gk_changed; - - 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; - } - - if (is_reload) { - delete_users(); - delete_aliases(); - prune_peers(); - } - - /* fire up the H.323 Endpoint */ - if (!h323_end_point_exist()) { - h323_end_point_create(); - } - ast_copy_string(_gatekeeper, gatekeeper, sizeof(_gatekeeper)); - gk_discover = gatekeeper_discover; - gk_disable = gatekeeper_disable; - memset(&bindaddr, 0, sizeof(bindaddr)); - memset(&global_options, 0, sizeof(global_options)); - global_options.fastStart = 1; - global_options.h245Tunneling = 1; - global_options.dtmfcodec = 101; - global_options.dtmfmode = H323_DTMF_RFC2833; - global_options.capability = GLOBAL_CAPABILITY; - global_options.bridge = 1; /* Do native bridging by default */ - strcpy(default_context, "default"); - h323_signalling_port = 1720; - gatekeeper_disable = 1; - gatekeeper_discover = 0; - gkroute = 0; - userbyalias = 1; - acceptAnonymous = 1; - tos = 0; - - /* Copy the default jb config over global_jbconf */ - memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf)); - - /* Load configuration from users.conf */ - ucfg = ast_config_load("users.conf"); - if (ucfg) { - struct ast_variable *gen; - int genhas_h323; - const char *has_h323; - - genhas_h323 = ast_true(ast_variable_retrieve(ucfg, "general", "hash323")); - gen = ast_variable_browse(ucfg, "general"); - for (cat = ast_category_browse(ucfg, NULL); cat; cat = ast_category_browse(ucfg, cat)) { - if (strcasecmp(cat, "general")) { - has_h323 = ast_variable_retrieve(ucfg, cat, "hash323"); - if (ast_true(has_h323) || (!has_h323 && genhas_h323)) { - user = build_user(cat, gen, ast_variable_browse(ucfg, cat), 0); - if (user) { - ASTOBJ_CONTAINER_LINK(&userl, user); - ASTOBJ_UNREF(user, oh323_destroy_user); - } - peer = build_peer(cat, gen, ast_variable_browse(ucfg, cat), 0); - if (peer) { - ASTOBJ_CONTAINER_LINK(&peerl, peer); - ASTOBJ_UNREF(peer, oh323_destroy_peer); - } - } - } - } - ast_config_destroy(ucfg); - } - - for (v = ast_variable_browse(cfg, "general"); v; v = v->next) { - /* handle jb conf */ - if (!ast_jb_read_conf(&global_jbconf, v->name, v->value)) - continue; - /* 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; - } else if (!strcasecmp(v->value, "DISCOVER")) { - gatekeeper_disable = 0; - gatekeeper_discover = 1; - } else { - gatekeeper_disable = 0; - ast_copy_string(gatekeeper, v->value, sizeof(gatekeeper)); - } - } else if (!strcasecmp(v->name, "secret")) { - ast_copy_string(secret, v->value, sizeof(secret)); - } else if (!strcasecmp(v->name, "AllowGKRouted")) { - gkroute = ast_true(v->value); - } else if (!strcasecmp(v->name, "context")) { - ast_copy_string(default_context, v->value, sizeof(default_context)); - 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 (!strcasecmp(v->name, "AcceptAnonymous")) { - acceptAnonymous = ast_true(v->value); - } else if (!update_common_options(v, &global_options)) { - /* dummy */ - } - } - - for (cat = ast_category_browse(cfg, NULL); cat; cat = ast_category_browse(cfg, cat)) { - if (strcasecmp(cat, "general")) { - utype = ast_variable_retrieve(cfg, cat, "type"); - if (utype) { - is_user = is_peer = is_alias = 0; - if (!strcasecmp(utype, "user")) - is_user = 1; - else if (!strcasecmp(utype, "peer")) - is_peer = 1; - else if (!strcasecmp(utype, "friend")) - is_user = is_peer = 1; - else if (!strcasecmp(utype, "h323") || !strcasecmp(utype, "alias")) - is_alias = 1; - else { - ast_log(LOG_WARNING, "Unknown type '%s' for '%s' in %s\n", utype, cat, config); - continue; - } - if (is_user) { - user = build_user(cat, ast_variable_browse(cfg, cat), NULL, 0); - if (user) { - ASTOBJ_CONTAINER_LINK(&userl, user); - ASTOBJ_UNREF(user, oh323_destroy_user); - } - } - if (is_peer) { - peer = build_peer(cat, ast_variable_browse(cfg, cat), NULL, 0); - if (peer) { - ASTOBJ_CONTAINER_LINK(&peerl, peer); - ASTOBJ_UNREF(peer, oh323_destroy_peer); - } - } - if (is_alias) { - alias = build_alias(cat, ast_variable_browse(cfg, cat), NULL, 0); - if (alias) { - ASTOBJ_CONTAINER_LINK(&aliasl, alias); - ASTOBJ_UNREF(alias, oh323_destroy_alias); - } - } - } else { - ast_log(LOG_WARNING, "Section '%s' lacks type\n", cat); - } - } - } - ast_config_destroy(cfg); - - /* Register our H.323 aliases if any*/ - ASTOBJ_CONTAINER_WRLOCK(&aliasl); - ASTOBJ_CONTAINER_TRAVERSE(&aliasl, 1, do { - ASTOBJ_RDLOCK(iterator); - if (h323_set_alias(iterator)) { - ast_log(LOG_ERROR, "Alias %s rejected by endpoint\n", alias->name); - ASTOBJ_UNLOCK(iterator); - continue; - } - ASTOBJ_UNLOCK(iterator); - } while (0) ); - ASTOBJ_CONTAINER_UNLOCK(&aliasl); - - /* Don't touch GK if nothing changed because URQ will drop all existing calls */ - gk_changed = 0; - if (gatekeeper_disable != gk_disable) - gk_changed = is_reload; - else if(!gatekeeper_disable && (gatekeeper_discover != gk_discover)) - gk_changed = is_reload; - else if(!gatekeeper_disable && (strncmp(_gatekeeper, gatekeeper, sizeof(_gatekeeper)) != 0)) - gk_changed = is_reload; - if (gk_changed) { - if(!gk_disable) - h323_gk_urq(); - if (!gatekeeper_disable) { - if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) { - ast_log(LOG_ERROR, "Gatekeeper registration failed.\n"); - gatekeeper_disable = 1; - } - } - } - return 0; -} - -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) -{ - reload_config(1); - return 0; -} - -static int reload(void) -{ - if (!sched || !io) { - ast_log(LOG_NOTICE, "Unload and load chan_h323.so again in order to receive configuration changes.\n"); - return 0; - } - 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 enum ast_rtp_get_result oh323_get_rtp_peer(struct ast_channel *chan, struct ast_rtp **rtp) -{ - struct oh323_pvt *pvt; - enum ast_rtp_get_result res = AST_RTP_GET_FAILED; - - if (!(pvt = (struct oh323_pvt *)chan->tech_pvt)) - return res; - - ast_mutex_lock(&pvt->lock); - if (pvt->rtp && pvt->options.bridge) { - *rtp = pvt->rtp; - res = AST_RTP_TRY_NATIVE; - } - ast_mutex_unlock(&pvt->lock); - - return res; -} - -static enum ast_rtp_get_result oh323_get_vrtp_peer(struct ast_channel *chan, struct ast_rtp **rtp) -{ - return AST_RTP_GET_FAILED; -} - -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_G722: - return "G.722"; - 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; - - 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); -#if 0 /* Native bridge still isn't ready */ - h323_native_bridge(pvt->cd.call_token, ast_inet_ntoa(them.sin_addr), mode); -#endif - return 0; -} - -static struct ast_rtp_protocol oh323_rtp = { - .type = "H323", - .get_rtp_info = oh323_get_rtp_peer, - .get_vrtp_info = oh323_get_vrtp_peer, - .set_rtp_peer = oh323_set_rtp_peer, -}; - -static enum ast_module_load_result load_module(void) -{ - int res; - - h323debug = 0; - sched = sched_context_create(); - if (!sched) { - ast_log(LOG_WARNING, "Unable to create schedule context\n"); - return AST_MODULE_LOAD_FAILURE; - } - io = io_context_create(); - if (!io) { - ast_log(LOG_WARNING, "Unable to create I/O context\n"); - return AST_MODULE_LOAD_FAILURE; - } - ast_cli_register(&cli_h323_reload); - ASTOBJ_CONTAINER_INIT(&userl); - ASTOBJ_CONTAINER_INIT(&peerl); - ASTOBJ_CONTAINER_INIT(&aliasl); - res = reload_config(0); - if (res) { - /* No config entry */ - ast_log(LOG_NOTICE, "Unload and load chan_h323.so again in order to receive configuration changes.\n"); - ast_cli_unregister(&cli_h323_reload); - io_context_destroy(io); - io = NULL; - sched_context_destroy(sched); - sched = NULL; - ASTOBJ_CONTAINER_DESTROY(&userl); - ASTOBJ_CONTAINER_DESTROY(&peerl); - ASTOBJ_CONTAINER_DESTROY(&aliasl); - return AST_MODULE_LOAD_DECLINE; - } else { - /* Make sure we can register our channel type */ - if (ast_channel_register(&oh323_tech)) { - ast_log(LOG_ERROR, "Unable to register channel class 'H323'\n"); - ast_cli_unregister(&cli_h323_reload); - h323_end_process(); - io_context_destroy(io); - sched_context_destroy(sched); - - ASTOBJ_CONTAINER_DESTROYALL(&userl, oh323_destroy_user); - ASTOBJ_CONTAINER_DESTROY(&userl); - ASTOBJ_CONTAINER_DESTROYALL(&peerl, oh323_destroy_peer); - ASTOBJ_CONTAINER_DESTROY(&peerl); - ASTOBJ_CONTAINER_DESTROYALL(&aliasl, oh323_destroy_alias); - ASTOBJ_CONTAINER_DESTROY(&aliasl); - - return AST_MODULE_LOAD_FAILURE; - } - ast_cli_register_multiple(cli_h323, sizeof(cli_h323) / sizeof(struct ast_cli_entry)); - - 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, - receive_digit, - answer_call, - progress, - set_dtmf_payload, - hangup_connection, - set_local_capabilities, - set_peer_capabilities); - /* start the h.323 listener */ - if (h323_start_listener(h323_signalling_port, bindaddr)) { - ast_log(LOG_ERROR, "Unable to create H323 listener.\n"); - ast_rtp_proto_unregister(&oh323_rtp); - ast_cli_unregister_multiple(cli_h323, sizeof(cli_h323) / sizeof(struct ast_cli_entry)); - ast_cli_unregister(&cli_h323_reload); - h323_end_process(); - io_context_destroy(io); - sched_context_destroy(sched); - - ASTOBJ_CONTAINER_DESTROYALL(&userl, oh323_destroy_user); - ASTOBJ_CONTAINER_DESTROY(&userl); - ASTOBJ_CONTAINER_DESTROYALL(&peerl, oh323_destroy_peer); - ASTOBJ_CONTAINER_DESTROY(&peerl); - ASTOBJ_CONTAINER_DESTROYALL(&aliasl, oh323_destroy_alias); - ASTOBJ_CONTAINER_DESTROY(&aliasl); - - return AST_MODULE_LOAD_FAILURE; - } - /* Possibly register with a GK */ - if (!gatekeeper_disable) { - if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) { - ast_log(LOG_ERROR, "Gatekeeper registration failed.\n"); - gatekeeper_disable = 1; - res = AST_MODULE_LOAD_SUCCESS; - } - } - /* And start the monitor for the first time */ - restart_monitor(); - } - return res; -} - -static int unload_module(void) -{ - struct oh323_pvt *p, *pl; - - /* unregister commands */ - ast_cli_unregister_multiple(cli_h323, sizeof(cli_h323) / sizeof(struct ast_cli_entry)); - ast_cli_unregister(&cli_h323_reload); - - ast_channel_unregister(&oh323_tech); - ast_rtp_proto_unregister(&oh323_rtp); - - 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 != AST_PTHREADT_STOP) && (monitor_thread != AST_PTHREADT_NULL)) { - if (monitor_thread != pthread_self()) { - 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; - } - if (!gatekeeper_disable) - h323_gk_urq(); - h323_end_process(); - if (io) - io_context_destroy(io); - if (sched) - sched_context_destroy(sched); - - ASTOBJ_CONTAINER_DESTROYALL(&userl, oh323_destroy_user); - ASTOBJ_CONTAINER_DESTROY(&userl); - ASTOBJ_CONTAINER_DESTROYALL(&peerl, oh323_destroy_peer); - ASTOBJ_CONTAINER_DESTROY(&peerl); - ASTOBJ_CONTAINER_DESTROYALL(&aliasl, oh323_destroy_alias); - ASTOBJ_CONTAINER_DESTROY(&aliasl); - - return 0; -} - -AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "The NuFone Network's OpenH323 Channel Driver", - .load = load_module, - .unload = unload_module, - .reload = reload, -); 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