git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3220 65c4cc65-6c06-0410-ace0-fbb531ad65f3
2003 lines
50 KiB
C
Executable file
2003 lines
50 KiB
C
Executable file
/*
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* chan_h323.c
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*
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* OpenH323 Channel Driver for ASTERISK PBX.
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* By Jeremy McNamara
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* For The NuFone Network
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*
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* This code has been derived from code created by
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* Michael Manousos and Mark Spencer
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*
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* This file is part of the chan_h323 driver for Asterisk
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*
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* chan_h323 is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* chan_h323 is distributed WITHOUT ANY WARRANTY; without even
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* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Version Info: $Id$
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*/
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#include <stdio.h>
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#include <pthread.h>
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#include <string.h>
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#include <asterisk/lock.h>
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#include <asterisk/logger.h>
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#include <asterisk/channel.h>
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#include <asterisk/channel_pvt.h>
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#include <asterisk/config.h>
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#include <asterisk/module.h>
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#include <asterisk/pbx.h>
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#include <asterisk/options.h>
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#include <asterisk/utils.h>
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#include <asterisk/lock.h>
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#include <asterisk/sched.h>
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#include <asterisk/io.h>
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#include <asterisk/rtp.h>
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#include <asterisk/acl.h>
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#include <asterisk/callerid.h>
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#include <asterisk/cli.h>
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#include <asterisk/dsp.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <sys/signal.h>
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#ifdef __OpenBSD__
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#include <netinet/in_systm.h>
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#ifndef IPTOS_MINCOST
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#define IPTOS_MINCOST 0x02
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#endif
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#endif
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#include <netinet/ip.h>
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#include "h323/chan_h323.h"
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/** String variables required by ASTERISK */
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static char *type = "H323";
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static char *desc = "The NuFone Network's Open H.323 Channel Driver";
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static char *tdesc = "The NuFone Network's Open H.323 Channel Driver";
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static char *config = "h323.conf";
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static char default_context[AST_MAX_EXTENSION];
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/** H.323 configuration values */
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static char gatekeeper[100];
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static int gatekeeper_disable = 1;
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static int gatekeeper_discover = 0;
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static int usingGk;
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static int port = 1720;
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static int gkroute = 0;
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/* to find user by alias is default, alternative is the incomming call's source IP address*/
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static int userbyalias = 1;
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static int bridge_default = 1;
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/* Just about everybody seems to support ulaw, so make it a nice default */
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static int capability = AST_FORMAT_ULAW;
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/* TOS flag */
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static int tos = 0;
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static int dtmfmode = H323_DTMF_RFC2833;
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static char secret[50];
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/** Private structure of a OpenH323 channel */
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struct oh323_pvt {
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ast_mutex_t lock; /* Channel private lock */
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call_options_t calloptions; /* Options to be used during call setup */
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int alreadygone; /* Whether or not we've already been destroyed by our peer */
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int needdestroy; /* if we need to be destroyed */
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call_details_t cd; /* Call details */
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struct ast_channel *owner; /* Who owns us */
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int capability; /* audio capability */
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int nonCodecCapability; /* non-audio capability */
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int outgoing; /* Outgoing or incoming call? */
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int nat; /* Are we talking to a NAT EP?*/
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int bridge; /* Determine of we should native bridge or not*/
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char exten[AST_MAX_EXTENSION]; /* Requested extension */
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char context[AST_MAX_EXTENSION]; /* Context where to start */
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char username[81]; /* H.323 alias using this channel */
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char accountcode[256]; /* Account code */
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int amaflags; /* AMA Flags */
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char callerid[80]; /* Caller*ID if available */
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struct ast_rtp *rtp; /* RTP Session */
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int dtmfmode; /* What DTMF Mode is being used */
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struct ast_dsp *vad; /* Used for in-band DTMF detection */
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struct oh323_pvt *next; /* Next channel in list */
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} *iflist = NULL;
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static struct ast_user_list {
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struct oh323_user *users;
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ast_mutex_t lock;
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} userl;
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static struct ast_peer_list {
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struct oh323_peer *peers;
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ast_mutex_t lock;
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} peerl;
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static struct ast_alias_list {
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struct oh323_alias *aliases;
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ast_mutex_t lock;
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} aliasl;
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/** Asterisk RTP stuff*/
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static struct sched_context *sched;
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static struct io_context *io;
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/** Protect the interface list (of oh323_pvt's) */
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AST_MUTEX_DEFINE_STATIC(iflock);
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/** Usage counter and associated lock */
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static int usecnt =0;
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AST_MUTEX_DEFINE_STATIC(usecnt_lock);
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/* Protect the monitoring thread, so only one process can kill or start it, and not
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when it's doing something critical. */
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AST_MUTEX_DEFINE_STATIC(monlock);
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/* This is the thread for the monitor which checks for input on the channels
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which are not currently in use. */
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static pthread_t monitor_thread = AST_PTHREADT_NULL;
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static int restart_monitor(void);
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static void __oh323_destroy(struct oh323_pvt *p)
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{
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struct oh323_pvt *cur, *prev = NULL;
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if (p->rtp) {
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ast_rtp_destroy(p->rtp);
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}
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/* Unlink us from the owner if we have one */
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if (p->owner) {
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ast_mutex_lock(&p->owner->lock);
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ast_log(LOG_DEBUG, "Detaching from %s\n", p->owner->name);
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p->owner->pvt->pvt = NULL;
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ast_mutex_unlock(&p->owner->lock);
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}
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cur = iflist;
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while(cur) {
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if (cur == p) {
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if (prev)
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prev->next = cur->next;
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else
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iflist = cur->next;
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break;
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}
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prev = cur;
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cur = cur->next;
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}
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if (!cur) {
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ast_log(LOG_WARNING, "%p is not in list?!?! \n", cur);
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} else
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free(p);
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}
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static void oh323_destroy(struct oh323_pvt *p)
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{
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ast_mutex_lock(&iflock);
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__oh323_destroy(p);
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ast_mutex_unlock(&iflock);
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}
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static struct oh323_alias *build_alias(char *name, struct ast_variable *v)
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{
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struct oh323_alias *alias;
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alias = (struct oh323_alias *)malloc(sizeof(struct oh323_alias));
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if (alias) {
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memset(alias, 0, sizeof(struct oh323_alias));
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strncpy(alias->name, name, sizeof(alias->name)-1);
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while (v) {
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if (!strcasecmp(v->name, "e164")) {
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strncpy(alias->e164, v->value, sizeof(alias->e164)-1);
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} else if (!strcasecmp(v->name, "prefix")) {
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strncpy(alias->prefix, v->value, sizeof(alias->prefix)-1);
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} else if (!strcasecmp(v->name, "context")) {
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strncpy(alias->context, v->value, sizeof(alias->context)-1);
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} else if (!strcasecmp(v->name, "secret")) {
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strncpy(alias->secret, v->value, sizeof(alias->secret)-1);
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} else {
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if (strcasecmp(v->value, "h323")) {
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ast_log(LOG_WARNING, "Keyword %s does not make sense in type=h323\n", v->value);
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}
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}
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v = v->next;
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}
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}
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return alias;
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}
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static struct oh323_user *build_user(char *name, struct ast_variable *v)
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{
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struct oh323_user *user;
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int format;
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user = (struct oh323_user *)malloc(sizeof(struct oh323_user));
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if (user) {
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memset(user, 0, sizeof(struct oh323_user));
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strncpy(user->name, name, sizeof(user->name)-1);
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/* set the usage flag to a sane starting value*/
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user->inUse = 0;
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/* Assume we can native bridge */
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user->bridge = bridge_default;
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while(v) {
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if (!strcasecmp(v->name, "context")) {
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strncpy(user->context, v->value, sizeof(user->context)-1);
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} else if (!strcasecmp(v->name, "bridge")) {
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user->bridge = ast_true(v->value);
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} else if (!strcasecmp(v->name, "nat")) {
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user->nat = ast_true(v->value);
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} else if (!strcasecmp(v->name, "noFastStart")) {
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user->noFastStart = ast_true(v->value);
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} else if (!strcasecmp(v->name, "noH245Tunneling")) {
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user->noH245Tunneling = ast_true(v->value);
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} else if (!strcasecmp(v->name, "noSilenceSuppression")) {
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user->noSilenceSuppression = ast_true(v->value);
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} else if (!strcasecmp(v->name, "secret")) {
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strncpy(user->secret, v->value, sizeof(user->secret)-1);
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} else if (!strcasecmp(v->name, "callerid")) {
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strncpy(user->callerid, v->value, sizeof(user->callerid)-1);
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} else if (!strcasecmp(v->name, "accountcode")) {
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strncpy(user->accountcode, v->value, sizeof(user->accountcode)-1);
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} else if (!strcasecmp(v->name, "incominglimit")) {
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user->incominglimit = atoi(v->value);
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if (user->incominglimit < 0)
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user->incominglimit = 0;
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} else if (!strcasecmp(v->name, "host")) {
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if (!strcasecmp(v->value, "dynamic")) {
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ast_log(LOG_ERROR, "Dynamic host configuration not implemented, yet!\n");
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free(user);
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return NULL;
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} else if (ast_get_ip(&user->addr, v->value)) {
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free(user);
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return NULL;
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}
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/* Let us know we need to use ip authentication */
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user->host = 1;
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} else if (!strcasecmp(v->name, "amaflags")) {
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format = ast_cdr_amaflags2int(v->value);
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if (format < 0) {
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ast_log(LOG_WARNING, "Invalid AMA Flags: %s at line %d\n", v->value, v->lineno);
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} else {
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user->amaflags = format;
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}
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}
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v = v->next;
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}
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}
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return user;
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}
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static struct oh323_peer *build_peer(char *name, struct ast_variable *v)
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{
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struct oh323_peer *peer;
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struct oh323_peer *prev;
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int found=0;
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prev = NULL;
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ast_mutex_lock(&peerl.lock);
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peer = peerl.peers;
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while(peer) {
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if (!strcasecmp(peer->name, name)) {
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break;
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}
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prev = peer;
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peer = peer->next;
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}
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if (peer) {
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found++;
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/* Already in the list, remove it and it will be added back (or FREE'd) */
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if (prev) {
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prev->next = peer->next;
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} else {
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peerl.peers = peer->next;
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}
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ast_mutex_unlock(&peerl.lock);
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} else {
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ast_mutex_unlock(&peerl.lock);
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peer = malloc(sizeof(struct oh323_peer));
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memset(peer, 0, sizeof(struct oh323_peer));
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}
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if (peer) {
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if (!found) {
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strncpy(peer->name, name, sizeof(peer->name)-1);
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}
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/* set the usage flag to a sane starting value*/
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peer->inUse = 0;
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while(v) {
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if (!strcasecmp(v->name, "context")) {
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strncpy(peer->context, v->value, sizeof(peer->context)-1);
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} else if (!strcasecmp(v->name, "bridge")) {
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peer->bridge = ast_true(v->value);
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} else if (!strcasecmp(v->name, "noFastStart")) {
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peer->noFastStart = ast_true(v->value);
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} else if (!strcasecmp(v->name, "noH245Tunneling")) {
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peer->noH245Tunneling = ast_true(v->value);
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} else if (!strcasecmp(v->name, "noSilenceSuppression")) {
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peer->noSilenceSuppression = ast_true(v->value);
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} else if (!strcasecmp(v->name, "outgoinglimit")) {
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peer->outgoinglimit = atoi(v->value);
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if (peer->outgoinglimit > 0)
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peer->outgoinglimit = 0;
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} else if (!strcasecmp(v->name, "host")) {
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if (!strcasecmp(v->value, "dynamic")) {
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ast_log(LOG_ERROR, "Dynamic host configuration not implemented, yet!\n");
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free(peer);
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return NULL;
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}
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if (ast_get_ip(&peer->addr, v->value)) {
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free(peer);
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return NULL;
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}
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}
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v=v->next;
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}
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}
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return peer;
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}
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/**
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* Send (play) the specified digit to the channel.
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*
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*/
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static int oh323_digit(struct ast_channel *c, char digit)
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{
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struct oh323_pvt *p = c->pvt->pvt;
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if (p && p->rtp && (p->dtmfmode & H323_DTMF_RFC2833)) {
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ast_rtp_senddigit(p->rtp, digit);
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}
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/* If in-band DTMF is desired, send that */
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if (p->dtmfmode & H323_DTMF_INBAND)
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h323_send_tone(p->cd.call_token, digit);
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return 0;
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}
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/**
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* Make a call over the specified channel to the specified
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* destination. This function will parse the destination string
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* and determine the address-number to call.
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* Return -1 on error, 0 on success.
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*/
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static int oh323_call(struct ast_channel *c, char *dest, int timeout)
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{
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int res;
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struct oh323_pvt *p = c->pvt->pvt;
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char called_addr[256];
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char *tmp, *cid, *cidname, oldcid[256];
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strtok_r(dest, "/", &(tmp));
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ast_log(LOG_DEBUG, "dest=%s, timeout=%d.\n", dest, timeout);
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if ((c->_state != AST_STATE_DOWN) && (c->_state != AST_STATE_RESERVED)) {
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ast_log(LOG_WARNING, "Line is already in use (%s)\n", c->name);
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return -1;
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}
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/* outgoing call */
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p->outgoing = 1;
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/* Clear the call token */
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if ((p->cd).call_token == NULL)
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(p->cd).call_token = (char *)malloc(128);
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memset((char *)(p->cd).call_token, 0, 128);
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if (p->cd.call_token == NULL) {
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ast_log(LOG_ERROR, "Not enough memory.\n");
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return -1;
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}
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/* Build the address to call */
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memset(called_addr, 0, sizeof(dest));
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memcpy(called_addr, dest, sizeof(called_addr));
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/* Copy callerid, if there is any */
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if (c->callerid) {
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memset(oldcid, 0, sizeof(oldcid));
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memcpy(oldcid, c->callerid, strlen(c->callerid));
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oldcid[sizeof(oldcid)-1] = '\0';
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ast_callerid_parse(oldcid, &cidname, &cid);
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if (p->calloptions.callerid) {
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free(p->calloptions.callerid);
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p->calloptions.callerid = NULL;
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}
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if (p->calloptions.callername) {
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free(p->calloptions.callername);
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p->calloptions.callername = NULL;
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}
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p->calloptions.callerid = (char*)malloc(256);
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if (p->calloptions.callerid == NULL) {
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ast_log(LOG_ERROR, "Not enough memory.\n");
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return(-1);
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}
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memset(p->calloptions.callerid, 0, 256);
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if ((cid != NULL)&&(strlen(cid) > 0))
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strncpy(p->calloptions.callerid, cid, 255);
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p->calloptions.callername = (char*)malloc(256);
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if (p->calloptions.callername == NULL) {
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ast_log(LOG_ERROR, "Not enough memory.\n");
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return(-1);
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}
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memset(p->calloptions.callername, 0, 256);
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if ((cidname != NULL)&&(strlen(cidname) > 0))
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strncpy(p->calloptions.callername, cidname, 255);
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} else {
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if (p->calloptions.callerid) {
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free(p->calloptions.callerid);
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p->calloptions.callerid = NULL;
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}
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if (p->calloptions.callername) {
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free(p->calloptions.callername);
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p->calloptions.callername = NULL;
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}
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}
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res = h323_make_call(called_addr, &(p->cd), p->calloptions);
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if (res) {
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ast_log(LOG_NOTICE, "h323_make_call failed(%s)\n", c->name);
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return -1;
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}
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return 0;
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}
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static int oh323_answer(struct ast_channel *c)
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{
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int res;
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struct oh323_pvt *p = c->pvt->pvt;
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res = h323_answering_call(p->cd.call_token, 0);
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if (c->_state != AST_STATE_UP)
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ast_setstate(c, AST_STATE_UP);
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return res;
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}
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static int oh323_hangup(struct ast_channel *c)
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{
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struct oh323_pvt *p = c->pvt->pvt;
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int needcancel = 0;
|
|
if (h323debug)
|
|
ast_log(LOG_DEBUG, "oh323_hangup(%s)\n", c->name);
|
|
if (!c->pvt->pvt) {
|
|
ast_log(LOG_DEBUG, "Asked to hangup channel not connected\n");
|
|
return 0;
|
|
}
|
|
ast_mutex_lock(&p->lock);
|
|
/* Determine how to disconnect */
|
|
if (p->owner != c) {
|
|
ast_log(LOG_WARNING, "Huh? We aren't the owner?\n");
|
|
ast_mutex_unlock(&p->lock);
|
|
return 0;
|
|
}
|
|
if (!c || (c->_state != AST_STATE_UP))
|
|
needcancel = 1;
|
|
/* Disconnect */
|
|
p = c->pvt->pvt;
|
|
|
|
/* Free dsp used for in-band DTMF detection */
|
|
if (p->vad) {
|
|
ast_dsp_free(p->vad);
|
|
}
|
|
|
|
p->owner = NULL;
|
|
c->pvt->pvt = NULL;
|
|
|
|
/* Start the process if it's not already started */
|
|
if (!p->alreadygone) {
|
|
if (h323_clear_call((p->cd).call_token)) {
|
|
ast_log(LOG_DEBUG, "ClearCall failed.\n");
|
|
}
|
|
p->needdestroy = 1;
|
|
}
|
|
|
|
/* Update usage counter */
|
|
ast_mutex_lock(&usecnt_lock);
|
|
usecnt--;
|
|
if (usecnt < 0)
|
|
ast_log(LOG_WARNING, "Usecnt < 0\n");
|
|
ast_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
|
|
ast_mutex_unlock(&p->lock);
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_frame *oh323_rtp_read(struct oh323_pvt *p)
|
|
{
|
|
/* Retrieve audio/etc from channel. Assumes p->lock is already held. */
|
|
struct ast_frame *f;
|
|
static struct ast_frame null_frame = { AST_FRAME_NULL, };
|
|
|
|
/* Only apply it for the first packet, we just need the correct ip/port */
|
|
if(p->nat)
|
|
{
|
|
ast_rtp_setnat(p->rtp,p->nat);
|
|
p->nat = 0;
|
|
}
|
|
|
|
f = ast_rtp_read(p->rtp);
|
|
/* Don't send RFC2833 if we're not supposed to */
|
|
if (f && (f->frametype == AST_FRAME_DTMF) && !(p->dtmfmode & H323_DTMF_RFC2833))
|
|
return &null_frame;
|
|
if (p->owner) {
|
|
/* We already hold the channel lock */
|
|
if (f->frametype == AST_FRAME_VOICE) {
|
|
if (f->subclass != p->owner->nativeformats) {
|
|
ast_log(LOG_DEBUG, "Oooh, format changed to %d\n", f->subclass);
|
|
p->owner->nativeformats = f->subclass;
|
|
ast_set_read_format(p->owner, p->owner->readformat);
|
|
ast_set_write_format(p->owner, p->owner->writeformat);
|
|
}
|
|
|
|
/* Do in-band DTMF detection */
|
|
if (p->dtmfmode & H323_DTMF_INBAND) {
|
|
f = ast_dsp_process(p->owner,p->vad,f);
|
|
if (f->frametype == AST_FRAME_DTMF)
|
|
ast_log(LOG_DEBUG, "Got 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 *p = c->pvt->pvt;
|
|
ast_mutex_lock(&p->lock);
|
|
fr = oh323_rtp_read(p);
|
|
ast_mutex_unlock(&p->lock);
|
|
return fr;
|
|
}
|
|
|
|
static int oh323_write(struct ast_channel *c, struct ast_frame *frame)
|
|
{
|
|
struct oh323_pvt *p = c->pvt->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 -1;
|
|
}
|
|
}
|
|
if (p) {
|
|
ast_mutex_lock(&p->lock);
|
|
if (p->rtp) {
|
|
res = ast_rtp_write(p->rtp, frame);
|
|
}
|
|
ast_mutex_unlock(&p->lock);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/** FIXME: Can I acutally use this or does Open H.323 take care of everything? */
|
|
static int oh323_indicate(struct ast_channel *c, int condition)
|
|
{
|
|
|
|
struct oh323_pvt *p = c->pvt->pvt;
|
|
|
|
switch(condition) {
|
|
case AST_CONTROL_RINGING:
|
|
if (c->_state == AST_STATE_RING || c->_state == AST_STATE_RINGING) {
|
|
h323_send_alerting(p->cd.call_token);
|
|
break;
|
|
}
|
|
return -1;
|
|
case AST_CONTROL_PROGRESS:
|
|
if (c->_state != AST_STATE_UP) {
|
|
h323_send_progress(p->cd.call_token);
|
|
break;
|
|
}
|
|
return -1;
|
|
|
|
case AST_CONTROL_BUSY:
|
|
if (c->_state != AST_STATE_UP) {
|
|
h323_answering_call(p->cd.call_token, 1);
|
|
p->alreadygone = 1;
|
|
ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV);
|
|
break;
|
|
}
|
|
return -1;
|
|
case AST_CONTROL_CONGESTION:
|
|
if (c->_state != AST_STATE_UP) {
|
|
h323_answering_call(p->cd.call_token, 1);
|
|
p->alreadygone = 1;
|
|
ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV);
|
|
break;
|
|
}
|
|
return -1;
|
|
case AST_CONTROL_PROCEEDING:
|
|
case -1:
|
|
return -1;
|
|
default:
|
|
ast_log(LOG_WARNING, "Don't know how to indicate condition %d\n", condition);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// FIXME: WTF is this? Do I need this???
|
|
static int oh323_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
|
|
{
|
|
struct oh323_pvt *p = newchan->pvt->pvt;
|
|
|
|
ast_mutex_lock(&p->lock);
|
|
if (p->owner != oldchan) {
|
|
ast_log(LOG_WARNING, "old channel wasn't %p but was %p\n", oldchan, p->owner);
|
|
return -1;
|
|
}
|
|
p->owner = newchan;
|
|
ast_mutex_unlock(&p->lock);
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_channel *oh323_new(struct oh323_pvt *i, int state, const char *host)
|
|
{
|
|
struct ast_channel *ch;
|
|
int fmt;
|
|
ch = ast_channel_alloc(1);
|
|
|
|
if (ch) {
|
|
|
|
snprintf(ch->name, sizeof(ch->name)-1, "H323/%s", host);
|
|
ch->nativeformats = i->capability;
|
|
if (!ch->nativeformats)
|
|
ch->nativeformats = capability;
|
|
fmt = ast_best_codec(ch->nativeformats);
|
|
ch->type = type;
|
|
ch->fds[0] = ast_rtp_fd(i->rtp);
|
|
|
|
if (state == AST_STATE_RING)
|
|
ch->rings = 1;
|
|
|
|
ch->writeformat = fmt;
|
|
ch->pvt->rawwriteformat = fmt;
|
|
ch->readformat = fmt;
|
|
ch->pvt->rawreadformat = fmt;
|
|
|
|
/* Allocate dsp for in-band DTMF support */
|
|
if (i->dtmfmode & H323_DTMF_INBAND) {
|
|
i->vad = ast_dsp_new();
|
|
ast_dsp_set_features(i->vad, DSP_FEATURE_DTMF_DETECT);
|
|
}
|
|
|
|
/* Register the OpenH323 channel's functions. */
|
|
ch->pvt->pvt = i;
|
|
ch->pvt->send_digit = oh323_digit;
|
|
ch->pvt->call = oh323_call;
|
|
ch->pvt->hangup = oh323_hangup;
|
|
ch->pvt->answer = oh323_answer;
|
|
ch->pvt->read = oh323_read;
|
|
ch->pvt->write = oh323_write;
|
|
ch->pvt->indicate = oh323_indicate;
|
|
ch->pvt->fixup = oh323_fixup;
|
|
/* ch->pvt->bridge = ast_rtp_bridge; */
|
|
|
|
/* Set the owner of this channel */
|
|
i->owner = ch;
|
|
|
|
ast_mutex_lock(&usecnt_lock);
|
|
usecnt++;
|
|
ast_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
strncpy(ch->context, i->context, sizeof(ch->context)-1);
|
|
strncpy(ch->exten, i->exten, sizeof(ch->exten)-1);
|
|
ch->priority = 1;
|
|
if (!ast_strlen_zero(i->callerid))
|
|
ch->callerid = strdup(i->callerid);
|
|
if (!ast_strlen_zero(i->accountcode))
|
|
strncpy(ch->accountcode, i->accountcode, sizeof(ch->accountcode)-1);
|
|
if (i->amaflags)
|
|
ch->amaflags = i->amaflags;
|
|
ast_setstate(ch, state);
|
|
if (state != AST_STATE_DOWN) {
|
|
if (ast_pbx_start(ch)) {
|
|
ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ch->name);
|
|
ast_hangup(ch);
|
|
ch = NULL;
|
|
}
|
|
}
|
|
} else
|
|
ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
|
|
return ch;
|
|
}
|
|
|
|
static struct oh323_pvt *oh323_alloc(int callid)
|
|
{
|
|
struct oh323_pvt *p;
|
|
|
|
p = malloc(sizeof(struct oh323_pvt));
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Couldn't allocate private structure. This is bad\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* Keep track of stuff */
|
|
memset(p, 0, sizeof(struct oh323_pvt));
|
|
p->rtp = ast_rtp_new(sched, io, 1, 0);
|
|
|
|
if (!p->rtp) {
|
|
ast_log(LOG_WARNING, "Unable to create RTP session: %s\n", strerror(errno));
|
|
free(p);
|
|
return NULL;
|
|
}
|
|
ast_rtp_settos(p->rtp, tos);
|
|
ast_mutex_init(&p->lock);
|
|
|
|
p->cd.call_reference = callid;
|
|
p->bridge = bridge_default;
|
|
|
|
p->dtmfmode = dtmfmode;
|
|
if (p->dtmfmode & H323_DTMF_RFC2833)
|
|
p->nonCodecCapability |= AST_RTP_DTMF;
|
|
|
|
/* Add to interface list */
|
|
ast_mutex_lock(&iflock);
|
|
p->next = iflist;
|
|
iflist = p;
|
|
ast_mutex_unlock(&iflock);
|
|
return p;
|
|
}
|
|
|
|
static struct oh323_pvt *find_call(int call_reference)
|
|
{
|
|
struct oh323_pvt *p;
|
|
|
|
ast_mutex_lock(&iflock);
|
|
p = iflist;
|
|
|
|
while(p) {
|
|
if (p->cd.call_reference == call_reference) {
|
|
/* Found the call */
|
|
ast_mutex_unlock(&iflock);
|
|
return p;
|
|
}
|
|
p = p->next;
|
|
}
|
|
ast_mutex_unlock(&iflock);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
static struct ast_channel *oh323_request(char *type, int format, void *data)
|
|
{
|
|
|
|
int oldformat;
|
|
struct oh323_pvt *p;
|
|
struct ast_channel *tmpc = NULL;
|
|
char *dest = data;
|
|
char *ext, *host;
|
|
char *h323id = NULL;
|
|
char tmp[256];
|
|
|
|
|
|
ast_log(LOG_DEBUG, "type=%s, format=%d, data=%s.\n", type, format, (char *)data);
|
|
|
|
oldformat = format;
|
|
format &= capability;
|
|
if (!format) {
|
|
ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", format);
|
|
return NULL;
|
|
}
|
|
|
|
strncpy(tmp, dest, sizeof(tmp) - 1);
|
|
|
|
host = strchr(tmp, '@');
|
|
if (host) {
|
|
*host = '\0';
|
|
host++;
|
|
ext = tmp;
|
|
} else {
|
|
host = tmp;
|
|
ext = NULL;
|
|
}
|
|
|
|
strtok_r(host, "/", &(h323id));
|
|
|
|
if (*h323id) {
|
|
h323_set_id(h323id);
|
|
}
|
|
|
|
p = oh323_alloc(0);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_WARNING, "Unable to build pvt data for '%s'\n", (char *)data);
|
|
return NULL;
|
|
}
|
|
|
|
/* Assign a default capability */
|
|
p->capability = capability;
|
|
|
|
if (p->dtmfmode) {
|
|
if (p->dtmfmode & H323_DTMF_RFC2833)
|
|
p->nonCodecCapability |= AST_RTP_DTMF;
|
|
else
|
|
p->nonCodecCapability &= ~AST_RTP_DTMF;
|
|
}
|
|
/* pass on our preferred codec to the H.323 stack */
|
|
h323_set_capability(format, dtmfmode);
|
|
|
|
if (ext) {
|
|
strncpy(p->username, ext, sizeof(p->username) - 1);
|
|
}
|
|
ast_log(LOG_DEBUG, "Host: %s\tUsername: %s\n", host, p->username);
|
|
|
|
tmpc = oh323_new(p, AST_STATE_DOWN, host);
|
|
if (!tmpc)
|
|
oh323_destroy(p);
|
|
|
|
restart_monitor();
|
|
|
|
return tmpc;
|
|
}
|
|
|
|
struct oh323_alias *find_alias(const char *source_aliases)
|
|
{
|
|
struct oh323_alias *a;
|
|
|
|
a = aliasl.aliases;
|
|
|
|
while(a) {
|
|
|
|
if (!strcasecmp(a->name, source_aliases)) {
|
|
break;
|
|
}
|
|
a = a->next;
|
|
}
|
|
return a;
|
|
}
|
|
|
|
struct oh323_user *find_user(const call_details_t cd)
|
|
{
|
|
struct oh323_user *u;
|
|
|
|
u = userl.users;
|
|
if(userbyalias == 1){
|
|
while(u) {
|
|
if (!strcasecmp(u->name, cd.call_source_aliases)) {
|
|
break;
|
|
}
|
|
u = u->next;
|
|
}
|
|
|
|
} else {
|
|
while(u) {
|
|
if (!strcasecmp(cd.sourceIp, inet_ntoa(u->addr.sin_addr))) {
|
|
break;
|
|
}
|
|
u = u->next;
|
|
}
|
|
|
|
|
|
}
|
|
return u;
|
|
|
|
}
|
|
|
|
struct oh323_peer *find_peer(char *dest_peer)
|
|
{
|
|
struct oh323_peer *p;
|
|
|
|
p = peerl.peers;
|
|
|
|
while(p) {
|
|
if (!strcasecmp(p->name, dest_peer)) {
|
|
break;
|
|
}
|
|
p = p->next;
|
|
}
|
|
return p;
|
|
|
|
}
|
|
|
|
/**
|
|
* Callback for sending digits from H.323 up to asterisk
|
|
*
|
|
*/
|
|
int send_digit(unsigned call_reference, char digit)
|
|
{
|
|
struct oh323_pvt *p;
|
|
struct ast_frame f;
|
|
|
|
ast_log(LOG_DEBUG, "Recieved Digit: %c\n", digit);
|
|
p = find_call(call_reference);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Private structure not found in send_digit.\n");
|
|
return -1;
|
|
}
|
|
memset(&f, 0, sizeof(f));
|
|
f.frametype = AST_FRAME_DTMF;
|
|
f.subclass = digit;
|
|
f.datalen = 0;
|
|
f.samples = 800;
|
|
f.offset = 0;
|
|
f.data = NULL;
|
|
f.mallocd = 0;
|
|
f.src = "SEND_DIGIT";
|
|
|
|
return ast_queue_frame(p->owner, &f);
|
|
}
|
|
|
|
/**
|
|
* Call-back function that gets called when any H.323 connection is made
|
|
*
|
|
* Returns the local RTP information
|
|
*/
|
|
struct rtp_info *create_connection(unsigned call_reference)
|
|
{
|
|
struct oh323_pvt *p;
|
|
struct sockaddr_in us;
|
|
struct sockaddr_in them;
|
|
struct rtp_info *info;
|
|
|
|
info = malloc(sizeof(struct rtp_info));
|
|
|
|
p = find_call(call_reference);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Unable to allocate private structure, this is very bad.\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* figure out our local RTP port and tell the H.323 stack about it*/
|
|
ast_rtp_get_us(p->rtp, &us);
|
|
ast_rtp_get_peer(p->rtp, &them);
|
|
|
|
info->addr = inet_ntoa(us.sin_addr);
|
|
info->port = ntohs(us.sin_port);
|
|
|
|
return info;
|
|
}
|
|
|
|
/**
|
|
* Call-back function for incoming calls
|
|
*
|
|
* Returns 1 on success
|
|
*/
|
|
|
|
int setup_incoming_call(call_details_t cd)
|
|
{
|
|
|
|
struct oh323_pvt *p = NULL;
|
|
/* struct ast_channel *c = NULL; */
|
|
struct oh323_user *user = NULL;
|
|
struct oh323_alias *alias = NULL;
|
|
|
|
/* allocate the call*/
|
|
p = oh323_alloc(cd.call_reference);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Unable to allocate private structure, this is bad.\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Populate the call details in the private structure */
|
|
p->cd.call_token = cd.call_token;
|
|
p->cd.call_source_aliases = cd.call_source_aliases;
|
|
p->cd.call_dest_alias = cd.call_dest_alias;
|
|
p->cd.call_source_name = cd.call_source_name;
|
|
p->cd.call_source_e164 = cd.call_source_e164;
|
|
p->cd.call_dest_e164 = cd.call_dest_e164;
|
|
|
|
if (h323debug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Setting up Call\n");
|
|
ast_verbose(VERBOSE_PREFIX_3 " Call token: [%s]\n", p->cd.call_token);
|
|
ast_verbose(VERBOSE_PREFIX_3 " Calling party name: [%s]\n", p->cd.call_source_name);
|
|
ast_verbose(VERBOSE_PREFIX_3 " Calling party number: [%s]\n", p->cd.call_source_e164);
|
|
ast_verbose(VERBOSE_PREFIX_3 " Called party name: [%s]\n", p->cd.call_dest_alias);
|
|
ast_verbose(VERBOSE_PREFIX_3 " Called party number: [%s]\n", p->cd.call_dest_e164);
|
|
}
|
|
|
|
/* Decide if we are allowing Gatekeeper routed calls*/
|
|
if ((!strcasecmp(cd.sourceIp, gatekeeper)) && (gkroute == -1) && (usingGk == 1)) {
|
|
|
|
if (!ast_strlen_zero(cd.call_dest_e164)) {
|
|
strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
|
|
strncpy(p->context, default_context, sizeof(p->context)-1);
|
|
} else {
|
|
alias = find_alias(cd.call_dest_alias);
|
|
|
|
if (!alias) {
|
|
ast_log(LOG_ERROR, "Call for %s rejected, alias not found\n", cd.call_dest_alias);
|
|
return 0;
|
|
}
|
|
strncpy(p->exten, alias->name, sizeof(p->exten)-1);
|
|
strncpy(p->context, alias->context, sizeof(p->context)-1);
|
|
}
|
|
sprintf(p->callerid, "%s <%s>", p->cd.call_source_name, p->cd.call_source_e164);
|
|
} else {
|
|
/* Either this call is not from the Gatekeeper
|
|
or we are not allowing gk routed calls */
|
|
user = find_user(cd);
|
|
|
|
if (!user) {
|
|
sprintf(p->callerid, "%s <%s>", p->cd.call_source_name, p->cd.call_source_e164);
|
|
if (!ast_strlen_zero(p->cd.call_dest_e164)) {
|
|
strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
|
|
} else {
|
|
strncpy(p->exten, cd.call_dest_alias, sizeof(p->exten)-1);
|
|
}
|
|
if (ast_strlen_zero(default_context)) {
|
|
ast_log(LOG_ERROR, "Call from '%s' rejected due to no default context\n", p->cd.call_source_aliases);
|
|
return 0;
|
|
}
|
|
strncpy(p->context, default_context, sizeof(p->context)-1);
|
|
ast_log(LOG_DEBUG, "Sending %s to context [%s]\n", cd.call_source_aliases, p->context);
|
|
} else {
|
|
if (user->host) {
|
|
if (strcasecmp(cd.sourceIp, 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);
|
|
return 0;
|
|
}
|
|
strncpy(p->context, default_context, sizeof(p->context)-1);
|
|
} else {
|
|
strncpy(p->context, user->context, sizeof(p->context)-1);
|
|
}
|
|
sprintf(p->exten, "i");
|
|
ast_log(LOG_ERROR, "Call from '%s' rejected due to non-matching IP address (%s)s\n", user->name, cd.sourceIp);
|
|
goto exit;
|
|
}
|
|
}
|
|
if (user->incominglimit > 0) {
|
|
if (user->inUse >= user->incominglimit) {
|
|
ast_log(LOG_ERROR, "Call from user '%s' rejected due to usage limit of %d\n", user->name, user->incominglimit);
|
|
return 0;
|
|
}
|
|
}
|
|
strncpy(p->context, user->context, sizeof(p->context)-1);
|
|
p->bridge = user->bridge;
|
|
p->nat = user->nat;
|
|
|
|
if (!ast_strlen_zero(user->callerid)) {
|
|
strncpy(p->callerid, user->callerid, sizeof(p->callerid) - 1);
|
|
} else {
|
|
sprintf(p->callerid, "%s <%s>", p->cd.call_source_name, p->cd.call_source_e164);
|
|
}
|
|
if (!ast_strlen_zero(p->cd.call_dest_e164)) {
|
|
strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
|
|
} else {
|
|
strncpy(p->exten, cd.call_dest_alias, sizeof(p->exten)-1);
|
|
}
|
|
if (!ast_strlen_zero(user->accountcode)) {
|
|
strncpy(p->accountcode, user->accountcode, sizeof(p->accountcode)-1);
|
|
}
|
|
|
|
/* Increment the usage counter */
|
|
user->inUse++;
|
|
}
|
|
}
|
|
|
|
exit:
|
|
#if 0
|
|
/* allocate a channel and tell asterisk about it */
|
|
c = oh323_new(p, AST_STATE_RINGING, cd.call_token);
|
|
if (!c) {
|
|
ast_log(LOG_ERROR, "Couldn't create channel. This is bad\n");
|
|
return 0;
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Call-back function to start PBX when OpenH323 ready to serve incoming call
|
|
*
|
|
* Returns 1 on success
|
|
*/
|
|
static int answer_call(unsigned call_reference)
|
|
{
|
|
struct oh323_pvt *p = NULL;
|
|
struct ast_channel *c = NULL;
|
|
|
|
/* Find the call or allocate a private structure if call not found */
|
|
p = find_call(call_reference);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Something is wrong: answer_call\n");
|
|
return 0;
|
|
}
|
|
|
|
/* allocate a channel and tell asterisk about it */
|
|
c = oh323_new(p, AST_STATE_RINGING, p->cd.call_token);
|
|
if (!c) {
|
|
ast_log(LOG_ERROR, "Couldn't create channel. This is bad\n");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Call-back function to establish an outgoing H.323 call
|
|
*
|
|
* Returns 1 on success
|
|
*/
|
|
int setup_outgoing_call(call_details_t cd)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
#if 0
|
|
if (p->inUse >= p->outgoinglimit) {
|
|
ast_log(LOG_ERROR, "Call to %s rejected due to usage limit of %d outgoing channels\n", p->name, p->inUse);
|
|
return 0;
|
|
}
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Rejecting call: peer %s not found\n", dest_peer);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* Call-back function that gets called for each rtp channel opened
|
|
*
|
|
* Returns nothing
|
|
*/
|
|
void setup_rtp_connection(unsigned call_reference, const char *remoteIp, int remotePort)
|
|
{
|
|
struct oh323_pvt *p = NULL;
|
|
struct sockaddr_in them;
|
|
|
|
/* Find the call or allocate a private structure if call not found */
|
|
p = find_call(call_reference);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Something is wrong: rtp\n");
|
|
return;
|
|
}
|
|
|
|
them.sin_family = AF_INET;
|
|
them.sin_addr.s_addr = inet_addr(remoteIp); // only works for IPv4
|
|
them.sin_port = htons(remotePort);
|
|
ast_rtp_set_peer(p->rtp, &them);
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Call-back function to signal asterisk that the channel has been answered
|
|
* Returns nothing
|
|
*/
|
|
void connection_made(unsigned call_reference)
|
|
{
|
|
struct ast_channel *c = NULL;
|
|
struct oh323_pvt *p = NULL;
|
|
|
|
p = find_call(call_reference);
|
|
|
|
if (!p)
|
|
ast_log(LOG_ERROR, "Something is wrong: connection\n");
|
|
|
|
|
|
if (!p->owner) {
|
|
ast_log(LOG_ERROR, "Channel has no owner\n");
|
|
return;
|
|
}
|
|
c = p->owner;
|
|
|
|
ast_setstate(c, AST_STATE_UP);
|
|
ast_queue_control(c, AST_CONTROL_ANSWER);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Call-back function to signal asterisk that the channel is ringing
|
|
* Returns nothing
|
|
*/
|
|
void chan_ringing(unsigned call_reference)
|
|
{
|
|
struct ast_channel *c = NULL;
|
|
struct oh323_pvt *p = NULL;
|
|
|
|
p = find_call(call_reference);
|
|
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "Something is wrong: ringing\n");
|
|
}
|
|
|
|
if (!p->owner) {
|
|
ast_log(LOG_ERROR, "Channel has no owner\n");
|
|
return;
|
|
}
|
|
c = p->owner;
|
|
ast_setstate(c, AST_STATE_RINGING);
|
|
ast_queue_control(c, AST_CONTROL_RINGING);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Call-back function to cleanup communication
|
|
* Returns nothing,
|
|
*/
|
|
void cleanup_connection(call_details_t cd)
|
|
{
|
|
struct oh323_pvt *p = NULL;
|
|
/* struct oh323_peer *peer = NULL; */
|
|
struct oh323_user *user = NULL;
|
|
struct ast_rtp *rtp = NULL;
|
|
|
|
p = find_call(cd.call_reference);
|
|
|
|
if (!p) {
|
|
return;
|
|
}
|
|
ast_mutex_lock(&p->lock);
|
|
|
|
/* Decrement usage counter */
|
|
if (!p->outgoing) {
|
|
user = find_user(cd);
|
|
|
|
if(user) {
|
|
user->inUse--;
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
if (p->outgoing) {
|
|
peer = find_peer(cd.call_dest_alias);
|
|
peer->inUse--;
|
|
} else {
|
|
user = find_user(cd);
|
|
user->inUse--;
|
|
}
|
|
#endif
|
|
|
|
if (p->rtp) {
|
|
rtp = p->rtp;
|
|
p->rtp = NULL;
|
|
/* Immediately stop RTP */
|
|
ast_rtp_destroy(rtp);
|
|
}
|
|
|
|
p->alreadygone = 1;
|
|
|
|
/* Send hangup */
|
|
if (p->owner) {
|
|
ast_queue_hangup(p->owner);
|
|
}
|
|
|
|
ast_mutex_unlock(&p->lock);
|
|
return;
|
|
}
|
|
|
|
static void *do_monitor(void *data)
|
|
{
|
|
int res;
|
|
struct oh323_pvt *oh323 = NULL;
|
|
|
|
for(;;) {
|
|
/* Check for interfaces needing to be killed */
|
|
ast_mutex_lock(&iflock);
|
|
restartsearch:
|
|
oh323 = iflist;
|
|
while(oh323) {
|
|
if (oh323->needdestroy) {
|
|
__oh323_destroy(oh323);
|
|
goto restartsearch;
|
|
}
|
|
oh323 = oh323->next;
|
|
}
|
|
ast_mutex_unlock(&iflock);
|
|
|
|
/* Wait for sched or io */
|
|
res = ast_sched_wait(sched);
|
|
if ((res < 0) || (res > 1000))
|
|
res = 1000;
|
|
res = ast_io_wait(io, res);
|
|
|
|
pthread_testcancel();
|
|
|
|
ast_mutex_lock(&monlock);
|
|
if (res >= 0)
|
|
ast_sched_runq(sched);
|
|
ast_mutex_unlock(&monlock);
|
|
}
|
|
/* Never reached */
|
|
return NULL;
|
|
|
|
}
|
|
|
|
static int restart_monitor(void)
|
|
{
|
|
/* If we're supposed to be stopped -- stay stopped */
|
|
if (monitor_thread == AST_PTHREADT_STOP)
|
|
return 0;
|
|
if (ast_mutex_lock(&monlock)) {
|
|
ast_log(LOG_WARNING, "Unable to lock monitor\n");
|
|
return -1;
|
|
}
|
|
if (monitor_thread == pthread_self()) {
|
|
ast_mutex_unlock(&monlock);
|
|
ast_log(LOG_WARNING, "Cannot kill myself\n");
|
|
return -1;
|
|
}
|
|
if (monitor_thread && (monitor_thread != AST_PTHREADT_NULL)) {
|
|
/* Wake up the thread */
|
|
pthread_kill(monitor_thread, SIGURG);
|
|
} else {
|
|
/* Start a new monitor */
|
|
if (pthread_create(&monitor_thread, NULL, do_monitor, NULL) < 0) {
|
|
ast_mutex_unlock(&monlock);
|
|
ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
|
|
return -1;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&monlock);
|
|
return 0;
|
|
}
|
|
|
|
static int h323_do_trace(int fd, int argc, char *argv[])
|
|
{
|
|
if (argc != 3) {
|
|
return RESULT_SHOWUSAGE;
|
|
}
|
|
h323_debug(1, atoi(argv[2]));
|
|
ast_cli(fd, "H.323 trace set to level %s\n", argv[2]);
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static int h323_no_trace(int fd, int argc, char *argv[])
|
|
{
|
|
if (argc != 3) {
|
|
return RESULT_SHOWUSAGE;
|
|
}
|
|
h323_debug(0,0);
|
|
ast_cli(fd, "H.323 trace disabled\n");
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static int h323_do_debug(int fd, int argc, char *argv[])
|
|
{
|
|
if (argc != 2) {
|
|
return RESULT_SHOWUSAGE;
|
|
}
|
|
h323debug = 1;
|
|
ast_cli(fd, "H323 debug enabled\n");
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static int h323_no_debug(int fd, int argc, char *argv[])
|
|
{
|
|
if (argc != 3) {
|
|
return RESULT_SHOWUSAGE;
|
|
}
|
|
h323debug = 0;
|
|
ast_cli(fd, "H323 Debug disabled\n");
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static int h323_gk_cycle(int fd, int argc, char *argv[])
|
|
{
|
|
return RESULT_SUCCESS;
|
|
#if 0
|
|
if (argc != 3) {
|
|
return RESULT_SHOWUSAGE;
|
|
}
|
|
h323_gk_urq();
|
|
|
|
/* Possibly register with a GK */
|
|
if (!gatekeeper_disable) {
|
|
if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
|
|
ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
|
|
}
|
|
}
|
|
return RESULT_SUCCESS;
|
|
#endif
|
|
}
|
|
|
|
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 no trace\n"
|
|
" Disables H.323 stack tracing for debugging purposes\n";
|
|
|
|
static char debug_usage[] =
|
|
"Usage: h.323 debug\n"
|
|
" Enables chan_h323 debug output\n";
|
|
|
|
static char no_debug_usage[] =
|
|
"Usage: h.323 no debug\n"
|
|
" Disables chan_h323 debug output\n";
|
|
|
|
static char show_codec_usage[] =
|
|
"Usage: h.323 show codec\n"
|
|
" Shows all enabled codecs\n";
|
|
|
|
static char show_cycle_usage[] =
|
|
"Usage: h.323 gk cycle\n"
|
|
" Manually re-register with the Gatekeper\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 struct ast_cli_entry cli_trace =
|
|
{ { "h.323", "trace", NULL }, h323_do_trace, "Enable H.323 Stack Tracing", trace_usage };
|
|
static struct ast_cli_entry cli_no_trace =
|
|
{ { "h.323", "no", "trace", NULL }, h323_no_trace, "Disable H.323 Stack Tracing", no_trace_usage };
|
|
static struct ast_cli_entry cli_debug =
|
|
{ { "h.323", "debug", NULL }, h323_do_debug, "Enable chan_h323 debug", debug_usage };
|
|
static struct ast_cli_entry cli_no_debug =
|
|
{ { "h.323", "no", "debug", NULL }, h323_no_debug, "Disable chan_h323 debug", no_debug_usage };
|
|
static struct ast_cli_entry cli_show_codecs =
|
|
{ { "h.323", "show", "codecs", NULL }, h323_show_codec, "Show enabled codecs", show_codec_usage };
|
|
static struct ast_cli_entry cli_gk_cycle =
|
|
{ { "h.323", "gk", "cycle", NULL }, h323_gk_cycle, "Manually re-register with the Gatekeper", show_cycle_usage };
|
|
static struct ast_cli_entry cli_hangup_call =
|
|
{ { "h.323", "hangup", NULL }, h323_ep_hangup, "Show all active call tokens", show_hangup_usage };
|
|
static struct ast_cli_entry cli_show_tokens =
|
|
{ { "h.323", "show", "tokens", NULL }, h323_tokens_show, "Manually try to hang up a call", show_tokens_usage };
|
|
|
|
|
|
|
|
int reload_config(void)
|
|
{
|
|
|
|
int format;
|
|
struct ast_config *cfg;
|
|
struct ast_variable *v;
|
|
struct oh323_peer *peer = NULL;
|
|
struct oh323_user *user = NULL;
|
|
struct oh323_alias *alias = NULL;
|
|
struct ast_hostent ahp; struct hostent *hp;
|
|
char *cat;
|
|
char *utype;
|
|
|
|
cfg = ast_load(config);
|
|
|
|
/* We *must* have a config file otherwise stop immediately */
|
|
if (!cfg) {
|
|
ast_log(LOG_NOTICE, "Unable to load config %s, H.323 disabled\n", config);
|
|
return 1;
|
|
}
|
|
|
|
/* fire up the H.323 Endpoint */
|
|
if (!h323_end_point_exist()) {
|
|
h323_end_point_create();
|
|
}
|
|
h323debug=0;
|
|
dtmfmode = H323_DTMF_RFC2833;
|
|
|
|
memset(&bindaddr, 0, sizeof(bindaddr));
|
|
|
|
v = ast_variable_browse(cfg, "general");
|
|
while(v) {
|
|
/* Create the interface list */
|
|
if (!strcasecmp(v->name, "port")) {
|
|
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, "allow")) {
|
|
format = ast_getformatbyname(v->value);
|
|
if (format < 1)
|
|
ast_log(LOG_WARNING, "Cannot allow unknown format '%s'\n", v->value);
|
|
else
|
|
capability |= format;
|
|
} else if (!strcasecmp(v->name, "disallow")) {
|
|
format = ast_getformatbyname(v->value);
|
|
if (format < 1)
|
|
ast_log(LOG_WARNING, "Cannot disallow unknown format '%s'\n", v->value);
|
|
else
|
|
capability &= ~format;
|
|
} else if (!strcasecmp(v->name, "tos")) {
|
|
if (sscanf(v->value, "%i", &format) == 1)
|
|
tos = format & 0xff;
|
|
else if (!strcasecmp(v->value, "lowdelay"))
|
|
tos = IPTOS_LOWDELAY;
|
|
else if (!strcasecmp(v->value, "throughput"))
|
|
tos = IPTOS_THROUGHPUT;
|
|
else if (!strcasecmp(v->value, "reliability"))
|
|
tos = IPTOS_RELIABILITY;
|
|
else if (!strcasecmp(v->value, "mincost"))
|
|
tos = IPTOS_MINCOST;
|
|
else if (!strcasecmp(v->value, "none"))
|
|
tos = 0;
|
|
else
|
|
ast_log(LOG_WARNING, "Invalid tos value at line %d, should be 'lowdelay', 'throughput', 'reliability', 'mincost', or 'none'\n", v->lineno);
|
|
} else if (!strcasecmp(v->name, "gatekeeper")) {
|
|
if (!strcasecmp(v->value, "DISABLE")) {
|
|
gatekeeper_disable = 1;
|
|
usingGk = 0;
|
|
} else if (!strcasecmp(v->value, "DISCOVER")) {
|
|
gatekeeper_disable = 0;
|
|
gatekeeper_discover = 1;
|
|
usingGk = 1;
|
|
} else {
|
|
gatekeeper_disable = 0;
|
|
usingGk = 1;
|
|
strncpy(gatekeeper, v->value, sizeof(gatekeeper)-1);
|
|
}
|
|
} else if (!strcasecmp(v->name, "secret")) {
|
|
strncpy(secret, v->value, sizeof(secret)-1);
|
|
} else if (!strcasecmp(v->name, "AllowGKRouted")) {
|
|
gkroute = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "context")) {
|
|
strncpy(default_context, v->value, sizeof(default_context)-1);
|
|
ast_verbose(VERBOSE_PREFIX_3 " == Setting default context to %s\n", default_context);
|
|
} else if (!strcasecmp(v->name, "dtmfmode")) {
|
|
if (!strcasecmp(v->value, "inband"))
|
|
dtmfmode=H323_DTMF_INBAND;
|
|
else if (!strcasecmp(v->value, "rfc2833"))
|
|
dtmfmode = H323_DTMF_RFC2833;
|
|
else {
|
|
ast_log(LOG_WARNING, "Unknown dtmf mode '%s', using rfc2833\n", v->value);
|
|
dtmfmode = H323_DTMF_RFC2833;
|
|
}
|
|
} else if (!strcasecmp(v->name, "UserByAlias")) {
|
|
userbyalias = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "bridge")) {
|
|
bridge_default = ast_true(v->value);
|
|
}
|
|
v = v->next;
|
|
}
|
|
|
|
cat = ast_category_browse(cfg, NULL);
|
|
while(cat) {
|
|
if (strcasecmp(cat, "general")) {
|
|
utype = ast_variable_retrieve(cfg, cat, "type");
|
|
if (utype) {
|
|
if (!strcasecmp(utype, "user") || !strcasecmp(utype, "friend")) {
|
|
user = build_user(cat, ast_variable_browse(cfg, cat));
|
|
if (user) {
|
|
ast_mutex_lock(&userl.lock);
|
|
user->next = userl.users;
|
|
userl.users = user;
|
|
ast_mutex_unlock(&userl.lock);
|
|
}
|
|
} else if (!strcasecmp(utype, "peer") || !strcasecmp(utype, "friend")) {
|
|
peer = build_peer(cat, ast_variable_browse(cfg, cat));
|
|
if (peer) {
|
|
ast_mutex_lock(&peerl.lock);
|
|
peer->next = peerl.peers;
|
|
peerl.peers = peer;
|
|
ast_mutex_unlock(&peerl.lock);
|
|
}
|
|
} else if (!strcasecmp(utype, "h323")) {
|
|
alias = build_alias(cat, ast_variable_browse(cfg, cat));
|
|
if (alias) {
|
|
ast_mutex_lock(&aliasl.lock);
|
|
alias->next = aliasl.aliases;
|
|
aliasl.aliases = alias;
|
|
ast_mutex_unlock(&aliasl.lock);
|
|
}
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unknown type '%s' for '%s' in %s\n", utype, cat, config);
|
|
}
|
|
} else
|
|
ast_log(LOG_WARNING, "Section '%s' lacks type\n", cat);
|
|
}
|
|
cat = ast_category_browse(cfg, cat);
|
|
}
|
|
|
|
/* Register our H.323 aliases if any*/
|
|
while (alias) {
|
|
if (h323_set_alias(alias)) {
|
|
ast_log(LOG_ERROR, "Alias %s rejected by endpoint\n", alias->name);
|
|
return -1;
|
|
}
|
|
alias = alias->next;
|
|
}
|
|
|
|
/* Add some capabilities */
|
|
if(h323_set_capability(capability, dtmfmode)) {
|
|
ast_log(LOG_ERROR, "Capabilities failure, this is bad.\n");
|
|
return -1;
|
|
}
|
|
ast_destroy(cfg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void delete_users(void)
|
|
{
|
|
struct oh323_user *user, *userlast;
|
|
struct oh323_peer *peer;
|
|
|
|
/* Delete all users */
|
|
ast_mutex_lock(&userl.lock);
|
|
for (user=userl.users;user;) {
|
|
userlast = user;
|
|
user=user->next;
|
|
free(userlast);
|
|
}
|
|
userl.users=NULL;
|
|
ast_mutex_unlock(&userl.lock);
|
|
ast_mutex_lock(&peerl.lock);
|
|
for (peer=peerl.peers;peer;) {
|
|
/* Assume all will be deleted, and we'll find out for sure later */
|
|
peer->delme = 1;
|
|
peer = peer->next;
|
|
}
|
|
ast_mutex_unlock(&peerl.lock);
|
|
}
|
|
|
|
void delete_aliases(void)
|
|
{
|
|
struct oh323_alias *alias, *aliaslast;
|
|
|
|
/* Delete all users */
|
|
ast_mutex_lock(&aliasl.lock);
|
|
for (alias=aliasl.aliases;alias;) {
|
|
aliaslast = alias;
|
|
alias=alias->next;
|
|
free(aliaslast);
|
|
}
|
|
aliasl.aliases=NULL;
|
|
ast_mutex_unlock(&aliasl.lock);
|
|
}
|
|
|
|
void prune_peers(void)
|
|
{
|
|
/* Prune peers who still are supposed to be deleted */
|
|
struct oh323_peer *peer, *peerlast, *peernext;
|
|
ast_mutex_lock(&peerl.lock);
|
|
peerlast = NULL;
|
|
for (peer=peerl.peers;peer;) {
|
|
peernext = peer->next;
|
|
if (peer->delme) {
|
|
free(peer);
|
|
if (peerlast)
|
|
peerlast->next = peernext;
|
|
else
|
|
peerl.peers = peernext;
|
|
} else
|
|
peerlast = peer;
|
|
peer=peernext;
|
|
}
|
|
ast_mutex_unlock(&peerl.lock);
|
|
}
|
|
|
|
int reload(void)
|
|
{
|
|
delete_users();
|
|
delete_aliases();
|
|
prune_peers();
|
|
|
|
#if 0
|
|
if (!ast_strlen_zero(gatekeeper)) {
|
|
h323_gk_urq();
|
|
}
|
|
#endif
|
|
|
|
reload_config();
|
|
|
|
#if 0
|
|
/* Possibly register with a GK */
|
|
if (gatekeeper_disable == 0) {
|
|
if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
|
|
ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
|
|
h323_end_process();
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
restart_monitor();
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct ast_rtp *oh323_get_rtp_peer(struct ast_channel *chan)
|
|
{
|
|
struct oh323_pvt *p;
|
|
p = chan->pvt->pvt;
|
|
if (p && p->rtp && p->bridge) {
|
|
return p->rtp;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static struct ast_rtp *oh323_get_vrtp_peer(struct ast_channel *chan)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static char *convertcap(int cap)
|
|
{
|
|
switch (cap) {
|
|
case AST_FORMAT_G723_1:
|
|
return "G.723";
|
|
case AST_FORMAT_GSM:
|
|
return "GSM";
|
|
case AST_FORMAT_ULAW:
|
|
return "ULAW";
|
|
case AST_FORMAT_ALAW:
|
|
return "ALAW";
|
|
case AST_FORMAT_ADPCM:
|
|
return "G.728";
|
|
case AST_FORMAT_G729A:
|
|
return "G.729";
|
|
case AST_FORMAT_SPEEX:
|
|
return "SPEEX";
|
|
case AST_FORMAT_ILBC:
|
|
return "ILBC";
|
|
default:
|
|
ast_log(LOG_NOTICE, "Don't know how to deal with mode %d\n", cap);
|
|
return NULL;
|
|
}
|
|
|
|
}
|
|
|
|
static int oh323_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp, struct ast_rtp *vrtp, int codecs)
|
|
{
|
|
/* XXX Deal with Video */
|
|
struct oh323_pvt *p;
|
|
struct sockaddr_in them;
|
|
struct sockaddr_in us;
|
|
char *mode;
|
|
|
|
mode = convertcap(chan->writeformat);
|
|
|
|
if (!rtp) {
|
|
return 0;
|
|
}
|
|
|
|
p = chan->pvt->pvt;
|
|
if (!p) {
|
|
ast_log(LOG_ERROR, "No Private Structure, this is bad\n");
|
|
return -1;
|
|
}
|
|
|
|
ast_rtp_get_peer(rtp, &them);
|
|
ast_rtp_get_us(rtp, &us);
|
|
|
|
h323_native_bridge(p->cd.call_token, inet_ntoa(them.sin_addr), mode);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static struct ast_rtp_protocol oh323_rtp = {
|
|
get_rtp_info: oh323_get_rtp_peer,
|
|
get_vrtp_info: oh323_get_vrtp_peer,
|
|
set_rtp_peer: oh323_set_rtp_peer,
|
|
};
|
|
|
|
|
|
int load_module()
|
|
{
|
|
int res;
|
|
|
|
res = reload_config();
|
|
|
|
if (res) {
|
|
return 0;
|
|
} else {
|
|
/* Make sure we can register our channel type */
|
|
if (ast_channel_register(type, tdesc, capability, oh323_request)) {
|
|
ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
|
|
h323_end_process();
|
|
return -1;
|
|
}
|
|
ast_cli_register(&cli_debug);
|
|
ast_cli_register(&cli_no_debug);
|
|
ast_cli_register(&cli_trace);
|
|
ast_cli_register(&cli_no_trace);
|
|
ast_cli_register(&cli_show_codecs);
|
|
ast_cli_register(&cli_gk_cycle);
|
|
ast_cli_register(&cli_hangup_call);
|
|
ast_cli_register(&cli_show_tokens);
|
|
|
|
oh323_rtp.type = type;
|
|
ast_rtp_proto_register(&oh323_rtp);
|
|
|
|
sched = sched_context_create();
|
|
if (!sched) {
|
|
ast_log(LOG_WARNING, "Unable to create schedule context\n");
|
|
}
|
|
io = io_context_create();
|
|
if (!io) {
|
|
ast_log(LOG_WARNING, "Unable to create I/O context\n");
|
|
}
|
|
|
|
/* Register our callback functions */
|
|
h323_callback_register(setup_incoming_call,
|
|
setup_outgoing_call,
|
|
create_connection,
|
|
setup_rtp_connection,
|
|
cleanup_connection,
|
|
chan_ringing,
|
|
connection_made,
|
|
send_digit,
|
|
answer_call);
|
|
|
|
|
|
/* start the h.323 listener */
|
|
if (h323_start_listener(port, bindaddr)) {
|
|
ast_log(LOG_ERROR, "Unable to create H323 listener.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Possibly register with a GK */
|
|
if (gatekeeper_disable == 0) {
|
|
if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
|
|
ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
|
|
return 0;
|
|
}
|
|
}
|
|
/* And start the monitor for the first time */
|
|
restart_monitor();
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
int unload_module()
|
|
{
|
|
struct oh323_pvt *p, *pl;
|
|
|
|
if (!ast_mutex_lock(&iflock)) {
|
|
/* hangup all interfaces if they have an owner */
|
|
p = iflist;
|
|
while(p) {
|
|
if (p->owner)
|
|
ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
|
|
p = p->next;
|
|
}
|
|
iflist = NULL;
|
|
ast_mutex_unlock(&iflock);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to lock the interface list\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!ast_mutex_lock(&monlock)) {
|
|
if (monitor_thread && (monitor_thread != AST_PTHREADT_STOP)) {
|
|
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 */
|
|
free(pl);
|
|
}
|
|
iflist = NULL;
|
|
ast_mutex_unlock(&iflock);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to lock the interface list\n");
|
|
return -1;
|
|
}
|
|
h323_gk_urq();
|
|
h323_end_process();
|
|
|
|
/* unregister rtp */
|
|
ast_rtp_proto_unregister(&oh323_rtp);
|
|
|
|
/* unregister commands */
|
|
ast_cli_unregister(&cli_debug);
|
|
ast_cli_unregister(&cli_no_debug);
|
|
ast_cli_unregister(&cli_trace);
|
|
ast_cli_unregister(&cli_no_trace);
|
|
ast_cli_unregister(&cli_show_codecs);
|
|
ast_cli_unregister(&cli_gk_cycle);
|
|
ast_cli_unregister(&cli_hangup_call);
|
|
ast_cli_unregister(&cli_show_tokens);
|
|
|
|
/* unregister channel type */
|
|
ast_channel_unregister(type);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usecount()
|
|
{
|
|
int res;
|
|
ast_mutex_lock(&usecnt_lock);
|
|
res = usecnt;
|
|
ast_mutex_unlock(&usecnt_lock);
|
|
return res;
|
|
}
|
|
|
|
char *description()
|
|
{
|
|
return desc;
|
|
}
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|
|
|
|
|
|
|
|
|