git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6596 65c4cc65-6c06-0410-ace0-fbb531ad65f3
4409 lines
126 KiB
C
Executable file
4409 lines
126 KiB
C
Executable file
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*
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*
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* Implementation of Media Gateway Control Protocol
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*
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*/
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/* FO: Changes
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* -- add distinctive ring signalling (part of RFC 3660)
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*/
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/* JS: Changes
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-- add support for the wildcard endpoint
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-- seteable wildcard with wcardep on mgcp.conf
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-- added package indicator on RQNT, i.e "dl" --> "L/dl"
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-- removed MDCX just before DLCX, do we need this ?
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*/
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/* JS: TODO
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-- reload for wildcard endpoint probably buggy
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-- when hf is notified we're sending CRCX after MDCX, without waiting for
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OK on the MDCX which fails on Cisco IAD 24XX
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-- honour codec order, by now the lowest codec number in "allow" is the prefered
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*/
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/* SC: Changes
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-- packet retransmit mechanism (simplistic)
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-- per endpoint/subchannel mgcp command sequencing.
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-- better transaction handling
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-- fixed some mem leaks
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-- run-time configuration reload
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-- distinguish CA and GW default MGCP ports
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-- prevent clipping of DTMF tones in an established call
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-- fixed a few crash scenarios in 3-way
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-- fix for a few cases where asterisk and MGW end-up in conflicting ep states
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-- enclose numeric IP in [] for outgoing requests
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*/
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/* SC: TODO
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-- piggyback support
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-- responseAck support
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-- enhance retransmit mechanism (RTO calc. etc.)
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-- embedded command support
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*/
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/* FS: Changes
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-- fixed reload_config() / do_monitor to stay responsive during reloads
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include <errno.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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#include <signal.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/lock.h"
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#include "asterisk/channel.h"
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#include "asterisk/config.h"
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#include "asterisk/logger.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/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/say.h"
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#include "asterisk/cdr.h"
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#include "asterisk/astdb.h"
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#include "asterisk/features.h"
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#include "asterisk/app.h"
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#include "asterisk/musiconhold.h"
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#include "asterisk/utils.h"
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#include "asterisk/causes.h"
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#include "asterisk/dsp.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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/*
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* Define to work around buggy dlink MGCP phone firmware which
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* appears not to know that "rt" is part of the "G" package.
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*/
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/* #define DLINK_BUGGY_FIRMWARE */
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#define MGCPDUMPER
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#define DEFAULT_EXPIRY 120
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#define MAX_EXPIRY 3600
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#define CANREINVITE 1
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#ifndef INADDR_NONE
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#define INADDR_NONE (in_addr_t)(-1)
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#endif
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static const char desc[] = "Media Gateway Control Protocol (MGCP)";
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static const char type[] = "MGCP";
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static const char tdesc[] = "Media Gateway Control Protocol (MGCP)";
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static const char config[] = "mgcp.conf";
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#define MGCP_DTMF_RFC2833 (1 << 0)
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#define MGCP_DTMF_INBAND (1 << 1)
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#define MGCP_DTMF_HYBRID (1 << 2)
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#define DEFAULT_MGCP_GW_PORT 2427 /* From RFC 2705 */
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#define DEFAULT_MGCP_CA_PORT 2727 /* From RFC 2705 */
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#define MGCP_MAX_PACKET 1500 /* Also from RFC 2543, should sub headers tho */
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#define DEFAULT_RETRANS 1000 /* How frequently to retransmit */
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#define MAX_RETRANS 5 /* Try only 5 times for retransmissions */
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/* MGCP rtp stream modes */
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#define MGCP_CX_SENDONLY 0
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#define MGCP_CX_RECVONLY 1
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#define MGCP_CX_SENDRECV 2
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#define MGCP_CX_CONF 3
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#define MGCP_CX_CONFERENCE 3
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#define MGCP_CX_MUTE 4
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#define MGCP_CX_INACTIVE 4
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static char *mgcp_cxmodes[] = {
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"sendonly",
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"recvonly",
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"sendrecv",
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"confrnce",
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"inactive"
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};
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/* SC: MGCP commands */
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#define MGCP_CMD_EPCF 0
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#define MGCP_CMD_CRCX 1
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#define MGCP_CMD_MDCX 2
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#define MGCP_CMD_DLCX 3
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#define MGCP_CMD_RQNT 4
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#define MGCP_CMD_NTFY 5
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#define MGCP_CMD_AUEP 6
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#define MGCP_CMD_AUCX 7
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#define MGCP_CMD_RSIP 8
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static char context[AST_MAX_EXTENSION] = "default";
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static char language[MAX_LANGUAGE] = "";
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static char musicclass[MAX_MUSICCLASS] = "";
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static char cid_num[AST_MAX_EXTENSION] = "";
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static char cid_name[AST_MAX_EXTENSION] = "";
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static int dtmfmode = 0;
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static int nat = 0;
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/* Not used. Dosn't hurt for us to always send cid */
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/* to the mgcp box. */
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/*static int use_callerid = 1;*/
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/*static int cur_signalling = -1;*/
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/*static unsigned int cur_group = 0;*/
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static ast_group_t cur_callergroup = 0;
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static ast_group_t cur_pickupgroup = 0;
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/* XXX Is this needed? */
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/* Doesn't look like the dsp stuff for */
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/* dtmfmode is actually hooked up. */
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/*static int relaxdtmf = 0;*/
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static int tos = 0;
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static int immediate = 0;
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static int callwaiting = 0;
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/* Not used. Dosn't hurt for us to always send cid */
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/* to the mgcp box. */
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/*static int callwaitingcallerid = 0;*/
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/*static int hidecallerid = 0;*/
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static int callreturn = 0;
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static int slowsequence = 0;
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static int threewaycalling = 0;
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/* This is for flashhook transfers */
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static int transfer = 0;
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static int cancallforward = 0;
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static int singlepath = 0;
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static int canreinvite = CANREINVITE;
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/*static int busycount = 3;*/
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/*static int callprogress = 0;*/
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static char accountcode[AST_MAX_ACCOUNT_CODE] = "";
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static char mailbox[AST_MAX_EXTENSION];
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static int amaflags = 0;
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static int adsi = 0;
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static int usecnt =0;
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AST_MUTEX_DEFINE_STATIC(usecnt_lock);
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/* SC: transaction id should always be positive */
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static unsigned int oseq;
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/* Wait up to 16 seconds for first digit (FXO logic) */
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static int firstdigittimeout = 16000;
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/* How long to wait for following digits (FXO logic) */
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static int gendigittimeout = 8000;
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/* How long to wait for an extra digit, if there is an ambiguous match */
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static int matchdigittimeout = 3000;
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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(netlock);
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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 int capability = AST_FORMAT_ULAW;
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static int nonCodecCapability = AST_RTP_DTMF;
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static char ourhost[MAXHOSTNAMELEN];
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static struct in_addr __ourip;
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static int ourport;
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static int mgcpdebug = 0;
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static struct sched_context *sched;
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static struct io_context *io;
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/* The private structures of the mgcp channels are linked for
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selecting outgoing channels */
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#define MGCP_MAX_HEADERS 64
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#define MGCP_MAX_LINES 64
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struct mgcp_request {
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int len;
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char *verb;
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char *identifier;
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char *endpoint;
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char *version;
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int headers; /* MGCP Headers */
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char *header[MGCP_MAX_HEADERS];
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int lines; /* SDP Content */
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char *line[MGCP_MAX_LINES];
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char data[MGCP_MAX_PACKET];
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int cmd; /* SC: int version of verb = command */
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unsigned int trid; /* SC: int version of identifier = transaction id */
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struct mgcp_request *next; /* SC: next in the queue */
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};
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/* SC: obsolete
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static struct mgcp_pkt {
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int retrans;
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struct mgcp_endpoint *owner;
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int packetlen;
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char data[MGCP_MAX_PACKET];
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struct mgcp_pkt *next;
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} *packets = NULL;
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*/
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/* MGCP message for queuing up */
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struct mgcp_message {
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struct mgcp_endpoint *owner_ep;
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struct mgcp_subchannel *owner_sub;
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int retrans;
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unsigned long expire;
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unsigned int seqno;
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int len;
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struct mgcp_message *next;
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char buf[0];
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};
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#define RESPONSE_TIMEOUT 30 /* in seconds */
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struct mgcp_response {
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time_t whensent;
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int len;
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int seqno;
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struct mgcp_response *next;
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char buf[0];
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};
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#define MAX_SUBS 2
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#define SUB_REAL 0
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#define SUB_ALT 1
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struct mgcp_subchannel {
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/* SC: subchannel magic string.
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Needed to prove that any subchannel pointer passed by asterisk
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really points to a valid subchannel memory area.
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Ugly.. But serves the purpose for the time being.
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*/
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#define MGCP_SUBCHANNEL_MAGIC "!978!"
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char magic[6];
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ast_mutex_t lock;
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int id;
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struct ast_channel *owner;
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struct mgcp_endpoint *parent;
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struct ast_rtp *rtp;
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struct sockaddr_in tmpdest;
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char txident[80]; /* FIXME SC: txident is replaced by rqnt_ident in endpoint.
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This should be obsoleted */
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char cxident[80];
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char callid[80];
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/* SC: obsolete
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time_t lastouttime;
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int lastout;
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*/
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int cxmode;
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struct mgcp_request *cx_queue; /* SC: pending CX commands */
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ast_mutex_t cx_queue_lock; /* SC: CX queue lock */
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int nat;
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int iseq; /* Not used? RTP? */
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int outgoing;
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int alreadygone;
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/* SC: obsolete
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int messagepending;
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struct mgcp_message *msgs;
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*/
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struct mgcp_subchannel *next; /* for out circular linked list */
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};
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#define MGCP_ONHOOK 1
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#define MGCP_OFFHOOK 2
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#define TYPE_TRUNK 1
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#define TYPE_LINE 2
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struct mgcp_endpoint {
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ast_mutex_t lock;
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char name[80];
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struct mgcp_subchannel *sub; /* pointer to our current connection, channel and stuff */
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char accountcode[AST_MAX_ACCOUNT_CODE];
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char exten[AST_MAX_EXTENSION]; /* Extention where to start */
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char context[AST_MAX_EXTENSION];
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char language[MAX_LANGUAGE];
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char cid_num[AST_MAX_EXTENSION]; /* Caller*ID */
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char cid_name[AST_MAX_EXTENSION]; /* Caller*ID */
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char lastcallerid[AST_MAX_EXTENSION]; /* Last Caller*ID */
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char call_forward[AST_MAX_EXTENSION]; /* Last Caller*ID */
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char mailbox[AST_MAX_EXTENSION];
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char musicclass[MAX_MUSICCLASS];
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char curtone[80]; /* Current tone */
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ast_group_t callgroup;
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ast_group_t pickupgroup;
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int callwaiting;
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int hascallwaiting;
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int transfer;
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int threewaycalling;
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int singlepath;
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int cancallforward;
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int canreinvite;
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int callreturn;
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int dnd; /* How does this affect callwait? Do we just deny a mgcp_request if we're dnd? */
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int hascallerid;
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int hidecallerid;
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int dtmfmode;
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int amaflags;
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int type;
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int slowsequence; /* MS: Sequence the endpoint as a whole */
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int group;
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int iseq; /* Not used? */
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int lastout; /* tracking this on the subchannels. Is it needed here? */
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int needdestroy; /* Not used? */
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int capability;
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int nonCodecCapability;
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int onhooktime;
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int msgstate; /* voicemail message state */
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int immediate;
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int hookstate;
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int adsi;
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char rqnt_ident[80]; /* SC: request identifier */
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struct mgcp_request *rqnt_queue; /* SC: pending RQNT commands */
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ast_mutex_t rqnt_queue_lock;
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struct mgcp_request *cmd_queue; /* SC: pending commands other than RQNT */
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ast_mutex_t cmd_queue_lock;
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int delme; /* SC: needed for reload */
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int needaudit; /* SC: needed for reload */
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struct ast_dsp *dsp; /* XXX Should there be a dsp/subchannel? XXX */
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/* owner is tracked on the subchannels, and the *sub indicates whos in charge */
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/* struct ast_channel *owner; */
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/* struct ast_rtp *rtp; */
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/* struct sockaddr_in tmpdest; */
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/* message go the the endpoint and not the channel so they stay here */
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struct mgcp_endpoint *next;
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struct mgcp_gateway *parent;
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};
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static struct mgcp_gateway {
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/* A gateway containing one or more endpoints */
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char name[80];
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int isnamedottedip; /* SC: is the name FQDN or dotted ip */
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struct sockaddr_in addr;
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struct sockaddr_in defaddr;
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struct in_addr ourip;
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int dynamic;
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int expire; /* XXX Should we ever expire dynamic registrations? XXX */
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struct mgcp_endpoint *endpoints;
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struct ast_ha *ha;
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/* SC: obsolete
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time_t lastouttime;
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int lastout;
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int messagepending;
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*/
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/* JS: Wildcard endpoint name */
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char wcardep[30];
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struct mgcp_message *msgs; /* SC: gw msg queue */
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ast_mutex_t msgs_lock; /* SC: queue lock */
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int retransid; /* SC: retrans timer id */
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int delme; /* SC: needed for reload */
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struct mgcp_response *responses;
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struct mgcp_gateway *next;
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} *gateways;
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AST_MUTEX_DEFINE_STATIC(mgcp_reload_lock);
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static int mgcp_reloading = 0;
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AST_MUTEX_DEFINE_STATIC(gatelock);
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static int mgcpsock = -1;
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static struct sockaddr_in bindaddr;
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static struct ast_frame *mgcp_read(struct ast_channel *ast);
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static int transmit_response(struct mgcp_subchannel *sub, char *msg, struct mgcp_request *req, char *msgrest);
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static int transmit_notify_request(struct mgcp_subchannel *sub, char *tone);
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static int transmit_modify_request(struct mgcp_subchannel *sub);
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static int transmit_notify_request_with_callerid(struct mgcp_subchannel *sub, char *tone, char *callernum, char *callername);
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static int transmit_modify_with_sdp(struct mgcp_subchannel *sub, struct ast_rtp *rtp, int codecs);
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static int transmit_connection_del(struct mgcp_subchannel *sub);
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static int transmit_audit_endpoint(struct mgcp_endpoint *p);
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static void start_rtp(struct mgcp_subchannel *sub);
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static void handle_response(struct mgcp_endpoint *p, struct mgcp_subchannel *sub,
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int result, unsigned int ident, struct mgcp_request *resp);
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static void dump_cmd_queues(struct mgcp_endpoint *p, struct mgcp_subchannel *sub);
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static int mgcp_do_reload(void);
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static int mgcp_reload(int fd, int argc, char *argv[]);
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static struct ast_channel *mgcp_request(const char *type, int format, void *data, int *cause);
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static int mgcp_call(struct ast_channel *ast, char *dest, int timeout);
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static int mgcp_hangup(struct ast_channel *ast);
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static int mgcp_answer(struct ast_channel *ast);
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static struct ast_frame *mgcp_read(struct ast_channel *ast);
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static int mgcp_write(struct ast_channel *ast, struct ast_frame *frame);
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static int mgcp_indicate(struct ast_channel *ast, int ind);
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static int mgcp_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
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static int mgcp_senddigit(struct ast_channel *ast, char digit);
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static const struct ast_channel_tech mgcp_tech = {
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.type = type,
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.description = tdesc,
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.capabilities = AST_FORMAT_ULAW,
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.properties = AST_CHAN_TP_WANTSJITTER,
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.requester = mgcp_request,
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.call = mgcp_call,
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.hangup = mgcp_hangup,
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.answer = mgcp_answer,
|
|
.read = mgcp_read,
|
|
.write = mgcp_write,
|
|
.indicate = mgcp_indicate,
|
|
.fixup = mgcp_fixup,
|
|
.send_digit = mgcp_senddigit,
|
|
.bridge = ast_rtp_bridge,
|
|
};
|
|
|
|
static int has_voicemail(struct mgcp_endpoint *p)
|
|
{
|
|
return ast_app_has_voicemail(p->mailbox, NULL);
|
|
}
|
|
|
|
static int unalloc_sub(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
if (p->sub == sub) {
|
|
ast_log(LOG_WARNING, "Trying to unalloc the real channel %s@%s?!?\n", p->name, p->parent->name);
|
|
return -1;
|
|
}
|
|
ast_log(LOG_DEBUG, "Released sub %d of channel %s@%s\n", sub->id, p->name, p->parent->name);
|
|
|
|
sub->owner = NULL;
|
|
if (!ast_strlen_zero(sub->cxident)) {
|
|
transmit_connection_del(sub);
|
|
}
|
|
sub->cxident[0] = '\0';
|
|
sub->callid[0] = '\0';
|
|
sub->cxmode = MGCP_CX_INACTIVE;
|
|
sub->outgoing = 0;
|
|
sub->alreadygone = 0;
|
|
memset(&sub->tmpdest, 0, sizeof(sub->tmpdest));
|
|
if (sub->rtp) {
|
|
ast_rtp_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
dump_cmd_queues(NULL, sub); /* SC */
|
|
return 0;
|
|
}
|
|
|
|
/* SC: modified for new transport mechanism */
|
|
static int __mgcp_xmit(struct mgcp_gateway *gw, char *data, int len)
|
|
{
|
|
int res;
|
|
if (gw->addr.sin_addr.s_addr)
|
|
res=sendto(mgcpsock, data, len, 0, (struct sockaddr *)&gw->addr, sizeof(struct sockaddr_in));
|
|
else
|
|
res=sendto(mgcpsock, data, len, 0, (struct sockaddr *)&gw->defaddr, sizeof(struct sockaddr_in));
|
|
if (res != len) {
|
|
ast_log(LOG_WARNING, "mgcp_xmit returned %d: %s\n", res, strerror(errno));
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static int resend_response(struct mgcp_subchannel *sub, struct mgcp_response *resp)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
int res;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
if (mgcpdebug) {
|
|
ast_verbose("Retransmitting:\n%s\n to %s:%d\n", resp->buf, ast_inet_ntoa(iabuf, sizeof(iabuf), p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
}
|
|
res = __mgcp_xmit(p->parent, resp->buf, resp->len);
|
|
if (res > 0)
|
|
res = 0;
|
|
return res;
|
|
}
|
|
|
|
static int send_response(struct mgcp_subchannel *sub, struct mgcp_request *req)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
int res;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
if (mgcpdebug) {
|
|
ast_verbose("Transmitting:\n%s\n to %s:%d\n", req->data, ast_inet_ntoa(iabuf, sizeof(iabuf), p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
}
|
|
res = __mgcp_xmit(p->parent, req->data, req->len);
|
|
if (res > 0)
|
|
res = 0;
|
|
return res;
|
|
}
|
|
|
|
/* SC: modified for new transport framework */
|
|
static void dump_queue(struct mgcp_gateway *gw, struct mgcp_endpoint *p)
|
|
{
|
|
struct mgcp_message *cur, *q = NULL, *w, *prev;
|
|
|
|
ast_mutex_lock(&gw->msgs_lock);
|
|
prev = NULL, cur = gw->msgs;
|
|
while (cur) {
|
|
if (!p || cur->owner_ep == p) {
|
|
if (prev)
|
|
prev->next = cur->next;
|
|
else
|
|
gw->msgs = cur->next;
|
|
|
|
ast_log(LOG_NOTICE, "Removing message from %s transaction %u\n",
|
|
gw->name, cur->seqno);
|
|
|
|
w = cur;
|
|
cur = cur->next;
|
|
if (q) {
|
|
w->next = q;
|
|
} else {
|
|
w->next = NULL;
|
|
}
|
|
q = w;
|
|
} else {
|
|
prev = cur, cur=cur->next;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&gw->msgs_lock);
|
|
|
|
while (q) {
|
|
cur = q;
|
|
q = q->next;
|
|
free(cur);
|
|
}
|
|
}
|
|
|
|
static void mgcp_queue_frame(struct mgcp_subchannel *sub, struct ast_frame *f)
|
|
{
|
|
for(;;) {
|
|
if (sub->owner) {
|
|
if (!ast_mutex_trylock(&sub->owner->lock)) {
|
|
ast_queue_frame(sub->owner, f);
|
|
ast_mutex_unlock(&sub->owner->lock);
|
|
break;
|
|
} else {
|
|
ast_mutex_unlock(&sub->lock);
|
|
usleep(1);
|
|
ast_mutex_lock(&sub->lock);
|
|
}
|
|
} else
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void mgcp_queue_hangup(struct mgcp_subchannel *sub)
|
|
{
|
|
for(;;) {
|
|
if (sub->owner) {
|
|
if (!ast_mutex_trylock(&sub->owner->lock)) {
|
|
ast_queue_hangup(sub->owner);
|
|
ast_mutex_unlock(&sub->owner->lock);
|
|
break;
|
|
} else {
|
|
ast_mutex_unlock(&sub->lock);
|
|
usleep(1);
|
|
ast_mutex_lock(&sub->lock);
|
|
}
|
|
} else
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void mgcp_queue_control(struct mgcp_subchannel *sub, int control)
|
|
{
|
|
struct ast_frame f = { AST_FRAME_CONTROL, };
|
|
f.subclass = control;
|
|
return mgcp_queue_frame(sub, &f);
|
|
}
|
|
|
|
static int retrans_pkt(void *data)
|
|
{
|
|
struct mgcp_gateway *gw = (struct mgcp_gateway *)data;
|
|
struct mgcp_message *cur, *exq = NULL, *w, *prev;
|
|
int res = 0;
|
|
|
|
/* find out expired msgs */
|
|
ast_mutex_lock(&gw->msgs_lock);
|
|
|
|
prev = NULL, cur = gw->msgs;
|
|
while (cur) {
|
|
if (cur->retrans < MAX_RETRANS) {
|
|
cur->retrans++;
|
|
if (mgcpdebug) {
|
|
ast_verbose("Retransmitting #%d transaction %u on [%s]\n",
|
|
cur->retrans, cur->seqno, gw->name);
|
|
}
|
|
__mgcp_xmit(gw, cur->buf, cur->len);
|
|
|
|
prev = cur;
|
|
cur = cur->next;
|
|
} else {
|
|
if (prev)
|
|
prev->next = cur->next;
|
|
else
|
|
gw->msgs = cur->next;
|
|
|
|
ast_log(LOG_WARNING, "Maximum retries exceeded for transaction %u on [%s]\n",
|
|
cur->seqno, gw->name);
|
|
|
|
w = cur;
|
|
cur = cur->next;
|
|
|
|
if (exq) {
|
|
w->next = exq;
|
|
} else {
|
|
w->next = NULL;
|
|
}
|
|
exq = w;
|
|
}
|
|
}
|
|
|
|
if (!gw->msgs) {
|
|
gw->retransid = -1;
|
|
res = 0;
|
|
} else {
|
|
res = 1;
|
|
}
|
|
ast_mutex_unlock(&gw->msgs_lock);
|
|
|
|
while (exq) {
|
|
cur = exq;
|
|
/* time-out transaction */
|
|
handle_response(cur->owner_ep, cur->owner_sub, 406, cur->seqno, NULL);
|
|
exq = exq->next;
|
|
free(cur);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* SC: modified for the new transaction mechanism */
|
|
static int mgcp_postrequest(struct mgcp_endpoint *p, struct mgcp_subchannel *sub,
|
|
char *data, int len, unsigned int seqno)
|
|
{
|
|
struct mgcp_message *msg = malloc(sizeof(struct mgcp_message) + len);
|
|
struct mgcp_message *cur;
|
|
struct mgcp_gateway *gw = ((p && p->parent) ? p->parent : NULL);
|
|
struct timeval tv;
|
|
|
|
if (!msg) {
|
|
return -1;
|
|
}
|
|
if (!gw) {
|
|
return -1;
|
|
}
|
|
/* SC
|
|
time(&t);
|
|
if (gw->messagepending && (gw->lastouttime + 20 < t)) {
|
|
ast_log(LOG_NOTICE, "Timeout waiting for response to message:%d, lastouttime: %ld, now: %ld. Dumping pending queue\n",
|
|
gw->msgs ? gw->msgs->seqno : -1, (long) gw->lastouttime, (long) t);
|
|
dump_queue(sub->parent);
|
|
}
|
|
*/
|
|
msg->owner_sub = sub;
|
|
msg->owner_ep = p;
|
|
msg->seqno = seqno;
|
|
msg->next = NULL;
|
|
msg->len = len;
|
|
msg->retrans = 0;
|
|
memcpy(msg->buf, data, msg->len);
|
|
|
|
ast_mutex_lock(&gw->msgs_lock);
|
|
cur = gw->msgs;
|
|
if (cur) {
|
|
while(cur->next)
|
|
cur = cur->next;
|
|
cur->next = msg;
|
|
} else {
|
|
gw->msgs = msg;
|
|
}
|
|
|
|
if (gettimeofday(&tv, NULL) < 0) {
|
|
/* This shouldn't ever happen, but let's be sure */
|
|
ast_log(LOG_NOTICE, "gettimeofday() failed!\n");
|
|
} else {
|
|
msg->expire = tv.tv_sec * 1000 + tv.tv_usec / 1000 + DEFAULT_RETRANS;
|
|
|
|
if (gw->retransid == -1)
|
|
gw->retransid = ast_sched_add(sched, DEFAULT_RETRANS, retrans_pkt, (void *)gw);
|
|
}
|
|
ast_mutex_unlock(&gw->msgs_lock);
|
|
/* SC
|
|
if (!gw->messagepending) {
|
|
gw->messagepending = 1;
|
|
gw->lastout = seqno;
|
|
gw->lastouttime = t;
|
|
*/
|
|
__mgcp_xmit(gw, msg->buf, msg->len);
|
|
/* XXX Should schedule retransmission XXX */
|
|
/* SC
|
|
} else
|
|
ast_log(LOG_DEBUG, "Deferring transmission of transaction %d\n", seqno);
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
/* SC: modified for new transport */
|
|
static int send_request(struct mgcp_endpoint *p, struct mgcp_subchannel *sub,
|
|
struct mgcp_request *req, unsigned int seqno)
|
|
{
|
|
int res = 0;
|
|
struct mgcp_request **queue, *q, *r, *t;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
ast_mutex_t *l;
|
|
|
|
ast_log(LOG_DEBUG, "Slow sequence is %d\n", p->slowsequence);
|
|
if (p->slowsequence) {
|
|
queue = &p->cmd_queue;
|
|
l = &p->cmd_queue_lock;
|
|
ast_mutex_lock(l);
|
|
} else {
|
|
switch (req->cmd) {
|
|
case MGCP_CMD_DLCX:
|
|
queue = &sub->cx_queue;
|
|
l = &sub->cx_queue_lock;
|
|
ast_mutex_lock(l);
|
|
q = sub->cx_queue;
|
|
/* delete pending cx cmds */
|
|
while (q) {
|
|
r = q->next;
|
|
free(q);
|
|
q = r;
|
|
}
|
|
*queue = NULL;
|
|
break;
|
|
|
|
case MGCP_CMD_CRCX:
|
|
case MGCP_CMD_MDCX:
|
|
queue = &sub->cx_queue;
|
|
l = &sub->cx_queue_lock;
|
|
ast_mutex_lock(l);
|
|
break;
|
|
|
|
case MGCP_CMD_RQNT:
|
|
queue = &p->rqnt_queue;
|
|
l = &p->rqnt_queue_lock;
|
|
ast_mutex_lock(l);
|
|
break;
|
|
|
|
default:
|
|
queue = &p->cmd_queue;
|
|
l = &p->cmd_queue_lock;
|
|
ast_mutex_lock(l);
|
|
break;
|
|
}
|
|
}
|
|
|
|
r = (struct mgcp_request *) malloc (sizeof(struct mgcp_request));
|
|
if (!r) {
|
|
ast_log(LOG_WARNING, "Cannot post MGCP request: insufficient memory\n");
|
|
ast_mutex_unlock(l);
|
|
return -1;
|
|
}
|
|
memcpy(r, req, sizeof(struct mgcp_request));
|
|
|
|
if (!(*queue)) {
|
|
if (mgcpdebug) {
|
|
ast_verbose("Posting Request:\n%s to %s:%d\n", req->data,
|
|
ast_inet_ntoa(iabuf, sizeof(iabuf), p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
}
|
|
|
|
res = mgcp_postrequest(p, sub, req->data, req->len, seqno);
|
|
} else {
|
|
if (mgcpdebug) {
|
|
ast_verbose("Queueing Request:\n%s to %s:%d\n", req->data,
|
|
ast_inet_ntoa(iabuf, sizeof(iabuf), p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
}
|
|
}
|
|
|
|
/* XXX SC: find tail. We could also keep tail in the data struct for faster access */
|
|
for (t = *queue; t && t->next; t = t->next);
|
|
|
|
r->next = NULL;
|
|
if (t)
|
|
t->next = r;
|
|
else
|
|
*queue = r;
|
|
|
|
ast_mutex_unlock(l);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int mgcp_call(struct ast_channel *ast, char *dest, int timeout)
|
|
{
|
|
int res;
|
|
struct mgcp_endpoint *p;
|
|
struct mgcp_subchannel *sub;
|
|
char tone[50] = "";
|
|
char *distinctive_ring = NULL;
|
|
struct varshead *headp;
|
|
struct ast_var_t *current;
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_call(%s)\n", ast->name);
|
|
}
|
|
sub = ast->tech_pvt;
|
|
p = sub->parent;
|
|
headp = &ast->varshead;
|
|
AST_LIST_TRAVERSE(headp,current,entries) {
|
|
/* Check whether there is an ALERT_INFO variable */
|
|
if (strcasecmp(ast_var_name(current),"ALERT_INFO") == 0) {
|
|
distinctive_ring = ast_var_value(current);
|
|
}
|
|
}
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
switch (p->hookstate) {
|
|
case MGCP_OFFHOOK:
|
|
if (distinctive_ring && !ast_strlen_zero(distinctive_ring)) {
|
|
snprintf(tone, sizeof(tone), "L/wt%s", distinctive_ring);
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP distinctive callwait %s\n", tone);
|
|
}
|
|
} else {
|
|
snprintf(tone, sizeof(tone), "L/wt");
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP normal callwait %s\n", tone);
|
|
}
|
|
}
|
|
break;
|
|
case MGCP_ONHOOK:
|
|
default:
|
|
if (distinctive_ring && !ast_strlen_zero(distinctive_ring)) {
|
|
snprintf(tone, sizeof(tone), "L/r%s", distinctive_ring);
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP distinctive ring %s\n", tone);
|
|
}
|
|
} else {
|
|
snprintf(tone, sizeof(tone), "L/rg");
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP default ring\n");
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
|
|
ast_log(LOG_WARNING, "mgcp_call called on %s, neither down nor reserved\n", ast->name);
|
|
ast_mutex_unlock(&sub->lock);
|
|
return -1;
|
|
}
|
|
|
|
res = 0;
|
|
sub->outgoing = 1;
|
|
sub->cxmode = MGCP_CX_RECVONLY;
|
|
if (p->type == TYPE_LINE) {
|
|
if (!sub->rtp) {
|
|
start_rtp(sub);
|
|
} else {
|
|
transmit_modify_request(sub);
|
|
}
|
|
|
|
if (sub->next->owner && !ast_strlen_zero(sub->next->cxident) && !ast_strlen_zero(sub->next->callid)) {
|
|
/* try to prevent a callwait from disturbing the other connection */
|
|
sub->next->cxmode = MGCP_CX_RECVONLY;
|
|
transmit_modify_request(sub->next);
|
|
}
|
|
|
|
transmit_notify_request_with_callerid(sub, tone, ast->cid.cid_num, ast->cid.cid_name);
|
|
ast_setstate(ast, AST_STATE_RINGING);
|
|
|
|
if (sub->next->owner && !ast_strlen_zero(sub->next->cxident) && !ast_strlen_zero(sub->next->callid)) {
|
|
/* Put the connection back in sendrecv */
|
|
sub->next->cxmode = MGCP_CX_SENDRECV;
|
|
transmit_modify_request(sub->next);
|
|
}
|
|
} else {
|
|
ast_log(LOG_NOTICE, "Don't know how to dial on trunks yet\n");
|
|
res = -1;
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
ast_queue_control(ast, AST_CONTROL_RINGING);
|
|
return res;
|
|
}
|
|
|
|
static int mgcp_hangup(struct ast_channel *ast)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
if (option_debug) {
|
|
ast_log(LOG_DEBUG, "mgcp_hangup(%s)\n", ast->name);
|
|
}
|
|
if (!ast->tech_pvt) {
|
|
ast_log(LOG_DEBUG, "Asked to hangup channel not connected\n");
|
|
return 0;
|
|
}
|
|
if (strcmp(sub->magic, MGCP_SUBCHANNEL_MAGIC)) {
|
|
ast_log(LOG_DEBUG, "Invalid magic. MGCP subchannel freed up already.\n");
|
|
return 0;
|
|
}
|
|
ast_mutex_lock(&sub->lock);
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_hangup(%s) on %s@%s\n", ast->name, p->name, p->parent->name);
|
|
}
|
|
|
|
if ((p->dtmfmode & MGCP_DTMF_INBAND) && p->dsp) {
|
|
/* SC: check whether other channel is active. */
|
|
if (!sub->next->owner) {
|
|
if (p->dtmfmode & MGCP_DTMF_HYBRID)
|
|
p->dtmfmode &= ~MGCP_DTMF_INBAND;
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_2 "MGCP free dsp on %s@%s\n", p->name, p->parent->name);
|
|
}
|
|
ast_dsp_free(p->dsp);
|
|
p->dsp = NULL;
|
|
}
|
|
}
|
|
|
|
sub->owner = NULL;
|
|
if (!ast_strlen_zero(sub->cxident)) {
|
|
transmit_connection_del(sub);
|
|
}
|
|
sub->cxident[0] = '\0';
|
|
if ((sub == p->sub) && sub->next->owner) {
|
|
if (p->hookstate == MGCP_OFFHOOK) {
|
|
if (sub->next->owner && ast_bridged_channel(sub->next->owner)) {
|
|
transmit_notify_request_with_callerid(p->sub, "L/wt", ast_bridged_channel(sub->next->owner)->cid.cid_num, ast_bridged_channel(sub->next->owner)->cid.cid_name);
|
|
}
|
|
} else {
|
|
/* set our other connection as the primary and swith over to it */
|
|
p->sub = sub->next;
|
|
p->sub->cxmode = MGCP_CX_RECVONLY;
|
|
transmit_modify_request(p->sub);
|
|
if (sub->next->owner && ast_bridged_channel(sub->next->owner)) {
|
|
transmit_notify_request_with_callerid(p->sub, "L/rg", ast_bridged_channel(sub->next->owner)->cid.cid_num, ast_bridged_channel(sub->next->owner)->cid.cid_name);
|
|
}
|
|
}
|
|
|
|
} else if ((sub == p->sub->next) && p->hookstate == MGCP_OFFHOOK) {
|
|
transmit_notify_request(sub, "L/v");
|
|
} else if (p->hookstate == MGCP_OFFHOOK) {
|
|
transmit_notify_request(sub, "L/ro");
|
|
} else {
|
|
transmit_notify_request(sub, "");
|
|
}
|
|
|
|
ast->tech_pvt = NULL;
|
|
sub->alreadygone = 0;
|
|
sub->outgoing = 0;
|
|
sub->cxmode = MGCP_CX_INACTIVE;
|
|
sub->callid[0] = '\0';
|
|
/* Reset temporary destination */
|
|
memset(&sub->tmpdest, 0, sizeof(sub->tmpdest));
|
|
if (sub->rtp) {
|
|
ast_rtp_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
|
|
/* SC: Decrement use count */
|
|
ast_mutex_lock(&usecnt_lock);
|
|
usecnt--;
|
|
ast_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
/* SC: Decrement use count */
|
|
|
|
if ((p->hookstate == MGCP_ONHOOK) && (!sub->next->rtp)) {
|
|
p->hidecallerid = 0;
|
|
if (p->hascallwaiting && !p->callwaiting) {
|
|
if (option_verbose > 2)
|
|
ast_verbose(VERBOSE_PREFIX_3 "Enabling call waiting on %s\n", ast->name);
|
|
p->callwaiting = -1;
|
|
}
|
|
if (has_voicemail(p)) {
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_hangup(%s) on %s@%s set vmwi(+)\n",
|
|
ast->name, p->name, p->parent->name);
|
|
}
|
|
transmit_notify_request(sub, "L/vmwi(+)");
|
|
} else {
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_hangup(%s) on %s@%s set vmwi(-)\n",
|
|
ast->name, p->name, p->parent->name);
|
|
}
|
|
transmit_notify_request(sub, "L/vmwi(-)");
|
|
}
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
return 0;
|
|
}
|
|
|
|
static int mgcp_show_endpoints(int fd, int argc, char *argv[])
|
|
{
|
|
struct mgcp_gateway *g;
|
|
struct mgcp_endpoint *e;
|
|
int hasendpoints = 0;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
|
|
if (argc != 3)
|
|
return RESULT_SHOWUSAGE;
|
|
ast_mutex_lock(&gatelock);
|
|
g = gateways;
|
|
while(g) {
|
|
e = g->endpoints;
|
|
ast_cli(fd, "Gateway '%s' at %s (%s)\n", g->name, g->addr.sin_addr.s_addr ? ast_inet_ntoa(iabuf, sizeof(iabuf), g->addr.sin_addr) : ast_inet_ntoa(iabuf, sizeof(iabuf), g->defaddr.sin_addr), g->dynamic ? "Dynamic" : "Static");
|
|
while(e) {
|
|
/* JS: Don't show wilcard endpoint */
|
|
if (strcmp(e->name, g->wcardep) !=0)
|
|
ast_cli(fd, " -- '%s@%s in '%s' is %s\n", e->name, g->name, e->context, e->sub->owner ? "active" : "idle");
|
|
hasendpoints = 1;
|
|
e = e->next;
|
|
}
|
|
if (!hasendpoints) {
|
|
ast_cli(fd, " << No Endpoints Defined >> ");
|
|
}
|
|
g = g->next;
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static char show_endpoints_usage[] =
|
|
"Usage: mgcp show endpoints\n"
|
|
" Lists all endpoints known to the MGCP (Media Gateway Control Protocol) subsystem.\n";
|
|
|
|
static struct ast_cli_entry cli_show_endpoints =
|
|
{ { "mgcp", "show", "endpoints", NULL }, mgcp_show_endpoints, "Show defined MGCP endpoints", show_endpoints_usage };
|
|
|
|
static int mgcp_audit_endpoint(int fd, int argc, char *argv[])
|
|
{
|
|
struct mgcp_gateway *g;
|
|
struct mgcp_endpoint *e;
|
|
int found = 0;
|
|
char *ename,*gname, *c;
|
|
|
|
if (!mgcpdebug) {
|
|
return RESULT_SHOWUSAGE;
|
|
}
|
|
if (argc != 4)
|
|
return RESULT_SHOWUSAGE;
|
|
/* split the name into parts by null */
|
|
ename = argv[3];
|
|
gname = ename;
|
|
while (*gname) {
|
|
if (*gname == '@') {
|
|
*gname = 0;
|
|
gname++;
|
|
break;
|
|
}
|
|
gname++;
|
|
}
|
|
if (gname[0] == '[')
|
|
gname++;
|
|
if ((c = strrchr(gname, ']')))
|
|
*c = '\0';
|
|
ast_mutex_lock(&gatelock);
|
|
g = gateways;
|
|
while(g) {
|
|
if (!strcasecmp(g->name, gname)) {
|
|
e = g->endpoints;
|
|
while(e) {
|
|
if (!strcasecmp(e->name, ename)) {
|
|
found = 1;
|
|
transmit_audit_endpoint(e);
|
|
break;
|
|
}
|
|
e = e->next;
|
|
}
|
|
if (found) {
|
|
break;
|
|
}
|
|
}
|
|
g = g->next;
|
|
}
|
|
if (!found) {
|
|
ast_cli(fd, " << Could not find endpoint >> ");
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static char audit_endpoint_usage[] =
|
|
"Usage: mgcp audit endpoint <endpointid>\n"
|
|
" Lists the capabilities of an endpoint in the MGCP (Media Gateway Control Protocol) subsystem.\n"
|
|
" mgcp debug MUST be on to see the results of this command.\n";
|
|
|
|
static struct ast_cli_entry cli_audit_endpoint =
|
|
{ { "mgcp", "audit", "endpoint", NULL }, mgcp_audit_endpoint, "Audit specified MGCP endpoint", audit_endpoint_usage };
|
|
|
|
static int mgcp_answer(struct ast_channel *ast)
|
|
{
|
|
int res = 0;
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
sub->cxmode = MGCP_CX_SENDRECV;
|
|
if (!sub->rtp) {
|
|
start_rtp(sub);
|
|
} else {
|
|
transmit_modify_request(sub);
|
|
}
|
|
/* SC: verbose level check */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_answer(%s) on %s@%s-%d\n",
|
|
ast->name, p->name, p->parent->name, sub->id);
|
|
}
|
|
if (ast->_state != AST_STATE_UP) {
|
|
ast_setstate(ast, AST_STATE_UP);
|
|
if (option_debug)
|
|
ast_log(LOG_DEBUG, "mgcp_answer(%s)\n", ast->name);
|
|
transmit_notify_request(sub, "");
|
|
transmit_modify_request(sub);
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
return res;
|
|
}
|
|
|
|
static struct ast_frame *mgcp_rtp_read(struct mgcp_subchannel *sub)
|
|
{
|
|
/* Retrieve audio/etc from channel. Assumes sub->lock is already held. */
|
|
struct ast_frame *f;
|
|
static struct ast_frame null_frame = { AST_FRAME_NULL, };
|
|
|
|
f = ast_rtp_read(sub->rtp);
|
|
/* Don't send RFC2833 if we're not supposed to */
|
|
if (f && (f->frametype == AST_FRAME_DTMF) && !(sub->parent->dtmfmode & MGCP_DTMF_RFC2833))
|
|
return &null_frame;
|
|
if (sub->owner) {
|
|
/* We already hold the channel lock */
|
|
if (f->frametype == AST_FRAME_VOICE) {
|
|
if (f->subclass != sub->owner->nativeformats) {
|
|
ast_log(LOG_DEBUG, "Oooh, format changed to %d\n", f->subclass);
|
|
sub->owner->nativeformats = f->subclass;
|
|
ast_set_read_format(sub->owner, sub->owner->readformat);
|
|
ast_set_write_format(sub->owner, sub->owner->writeformat);
|
|
}
|
|
/* Courtesy fearnor aka alex@pilosoft.com */
|
|
if ((sub->parent->dtmfmode & MGCP_DTMF_INBAND) && (sub->parent->dsp)) {
|
|
#if 0
|
|
ast_log(LOG_NOTICE, "MGCP ast_dsp_process\n");
|
|
#endif
|
|
f = ast_dsp_process(sub->owner, sub->parent->dsp, f);
|
|
}
|
|
}
|
|
}
|
|
return f;
|
|
}
|
|
|
|
|
|
static struct ast_frame *mgcp_read(struct ast_channel *ast)
|
|
{
|
|
struct ast_frame *f;
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
ast_mutex_lock(&sub->lock);
|
|
f = mgcp_rtp_read(sub);
|
|
ast_mutex_unlock(&sub->lock);
|
|
return f;
|
|
}
|
|
|
|
static int mgcp_write(struct ast_channel *ast, struct ast_frame *frame)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->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 MGCP write\n", frame->frametype);
|
|
return 0;
|
|
}
|
|
} else {
|
|
if (!(frame->subclass & ast->nativeformats)) {
|
|
ast_log(LOG_WARNING, "Asked to transmit frame type %d, while native formats is %d (read/write = %d/%d)\n",
|
|
frame->subclass, ast->nativeformats, ast->readformat, ast->writeformat);
|
|
return -1;
|
|
}
|
|
}
|
|
if (sub) {
|
|
ast_mutex_lock(&sub->lock);
|
|
if ((sub->parent->sub == sub) || !sub->parent->singlepath) {
|
|
if (sub->rtp) {
|
|
res = ast_rtp_write(sub->rtp, frame);
|
|
}
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static int mgcp_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
|
|
{
|
|
struct mgcp_subchannel *sub = newchan->tech_pvt;
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
ast_log(LOG_NOTICE, "mgcp_fixup(%s, %s)\n", oldchan->name, newchan->name);
|
|
if (sub->owner != oldchan) {
|
|
ast_mutex_unlock(&sub->lock);
|
|
ast_log(LOG_WARNING, "old channel wasn't %p but was %p\n", oldchan, sub->owner);
|
|
return -1;
|
|
}
|
|
sub->owner = newchan;
|
|
ast_mutex_unlock(&sub->lock);
|
|
return 0;
|
|
}
|
|
|
|
static int mgcp_senddigit(struct ast_channel *ast, char digit)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
char tmp[4];
|
|
|
|
tmp[0] = 'D';
|
|
tmp[1] = '/';
|
|
tmp[2] = digit;
|
|
tmp[3] = '\0';
|
|
ast_mutex_lock(&sub->lock);
|
|
transmit_notify_request(sub, tmp);
|
|
ast_mutex_unlock(&sub->lock);
|
|
return -1;
|
|
}
|
|
|
|
static char *control2str(int ind) {
|
|
switch (ind) {
|
|
case AST_CONTROL_HANGUP:
|
|
return "Other end has hungup";
|
|
case AST_CONTROL_RING:
|
|
return "Local ring";
|
|
case AST_CONTROL_RINGING:
|
|
return "Remote end is ringing";
|
|
case AST_CONTROL_ANSWER:
|
|
return "Remote end has answered";
|
|
case AST_CONTROL_BUSY:
|
|
return "Remote end is busy";
|
|
case AST_CONTROL_TAKEOFFHOOK:
|
|
return "Make it go off hook";
|
|
case AST_CONTROL_OFFHOOK:
|
|
return "Line is off hook";
|
|
case AST_CONTROL_CONGESTION:
|
|
return "Congestion (circuits busy)";
|
|
case AST_CONTROL_FLASH:
|
|
return "Flash hook";
|
|
case AST_CONTROL_WINK:
|
|
return "Wink";
|
|
case AST_CONTROL_OPTION:
|
|
return "Set a low-level option";
|
|
case AST_CONTROL_RADIO_KEY:
|
|
return "Key Radio";
|
|
case AST_CONTROL_RADIO_UNKEY:
|
|
return "Un-Key Radio";
|
|
}
|
|
return "UNKNOWN";
|
|
}
|
|
|
|
static int mgcp_indicate(struct ast_channel *ast, int ind)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
int res = 0;
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP asked to indicate %d '%s' condition on channel %s\n",
|
|
ind, control2str(ind), ast->name);
|
|
}
|
|
ast_mutex_lock(&sub->lock);
|
|
switch(ind) {
|
|
case AST_CONTROL_RINGING:
|
|
#ifdef DLINK_BUGGY_FIRMWARE
|
|
transmit_notify_request(sub, "rt");
|
|
#else
|
|
transmit_notify_request(sub, "G/rt");
|
|
#endif
|
|
break;
|
|
case AST_CONTROL_BUSY:
|
|
transmit_notify_request(sub, "L/bz");
|
|
break;
|
|
case AST_CONTROL_CONGESTION:
|
|
transmit_notify_request(sub, "G/cg");
|
|
break;
|
|
case -1:
|
|
transmit_notify_request(sub, "");
|
|
break;
|
|
default:
|
|
ast_log(LOG_WARNING, "Don't know how to indicate condition %d\n", ind);
|
|
res = -1;
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
return res;
|
|
}
|
|
|
|
static struct ast_channel *mgcp_new(struct mgcp_subchannel *sub, int state)
|
|
{
|
|
struct ast_channel *tmp;
|
|
struct mgcp_endpoint *i = sub->parent;
|
|
int fmt;
|
|
|
|
tmp = ast_channel_alloc(1);
|
|
if (tmp) {
|
|
tmp->tech = &mgcp_tech;
|
|
tmp->nativeformats = i->capability;
|
|
if (!tmp->nativeformats)
|
|
tmp->nativeformats = capability;
|
|
fmt = ast_best_codec(tmp->nativeformats);
|
|
snprintf(tmp->name, sizeof(tmp->name), "MGCP/%s@%s-%d", i->name, i->parent->name, sub->id);
|
|
if (sub->rtp)
|
|
tmp->fds[0] = ast_rtp_fd(sub->rtp);
|
|
tmp->type = type;
|
|
if (i->dtmfmode & (MGCP_DTMF_INBAND | MGCP_DTMF_HYBRID)) {
|
|
i->dsp = ast_dsp_new();
|
|
ast_dsp_set_features(i->dsp,DSP_FEATURE_DTMF_DETECT);
|
|
/* SC: this is to prevent clipping of dtmf tones during dsp processing */
|
|
ast_dsp_digitmode(i->dsp, DSP_DIGITMODE_NOQUELCH);
|
|
} else {
|
|
i->dsp = NULL;
|
|
}
|
|
ast_setstate(tmp, state);
|
|
if (state == AST_STATE_RING)
|
|
tmp->rings = 1;
|
|
tmp->writeformat = fmt;
|
|
tmp->rawwriteformat = fmt;
|
|
tmp->readformat = fmt;
|
|
tmp->rawreadformat = fmt;
|
|
tmp->tech_pvt = sub;
|
|
if (!ast_strlen_zero(i->language))
|
|
strncpy(tmp->language, i->language, sizeof(tmp->language)-1);
|
|
if (!ast_strlen_zero(i->accountcode))
|
|
strncpy(tmp->accountcode, i->accountcode, sizeof(tmp->accountcode)-1);
|
|
if (i->amaflags)
|
|
tmp->amaflags = i->amaflags;
|
|
sub->owner = tmp;
|
|
ast_mutex_lock(&usecnt_lock);
|
|
usecnt++;
|
|
ast_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
tmp->callgroup = i->callgroup;
|
|
tmp->pickupgroup = i->pickupgroup;
|
|
strncpy(tmp->call_forward, i->call_forward, sizeof(tmp->call_forward) - 1);
|
|
strncpy(tmp->context, i->context, sizeof(tmp->context)-1);
|
|
strncpy(tmp->exten, i->exten, sizeof(tmp->exten)-1);
|
|
if (!ast_strlen_zero(i->cid_num))
|
|
tmp->cid.cid_num = strdup(i->cid_num);
|
|
if (!ast_strlen_zero(i->cid_name))
|
|
tmp->cid.cid_name = strdup(i->cid_name);
|
|
if (!i->adsi)
|
|
tmp->adsicpe = AST_ADSI_UNAVAILABLE;
|
|
tmp->priority = 1;
|
|
if (state != AST_STATE_DOWN) {
|
|
if (ast_pbx_start(tmp)) {
|
|
ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
|
|
ast_hangup(tmp);
|
|
tmp = NULL;
|
|
}
|
|
}
|
|
/* SC: verbose level check */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_new(%s) created in state: %s\n",
|
|
tmp->name, ast_state2str(state));
|
|
}
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
static char* get_sdp_by_line(char* line, char *name, int nameLen)
|
|
{
|
|
if (strncasecmp(line, name, nameLen) == 0 && line[nameLen] == '=') {
|
|
char* r = line + nameLen + 1;
|
|
while (*r && (*r < 33)) ++r;
|
|
return r;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
static char *get_sdp(struct mgcp_request *req, char *name)
|
|
{
|
|
int x;
|
|
int len = strlen(name);
|
|
char *r;
|
|
|
|
for (x=0; x<req->lines; x++) {
|
|
r = get_sdp_by_line(req->line[x], name, len);
|
|
if (r[0] != '\0') return r;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
static void sdpLineNum_iterator_init(int* iterator)
|
|
{
|
|
*iterator = 0;
|
|
}
|
|
|
|
static char* get_sdp_iterate(int* iterator, struct mgcp_request *req, char *name)
|
|
{
|
|
int len = strlen(name);
|
|
char *r;
|
|
while (*iterator < req->lines) {
|
|
r = get_sdp_by_line(req->line[(*iterator)++], name, len);
|
|
if (r[0] != '\0') return r;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
static char *__get_header(struct mgcp_request *req, char *name, int *start)
|
|
{
|
|
int x;
|
|
int len = strlen(name);
|
|
char *r;
|
|
for (x=*start;x<req->headers;x++) {
|
|
if (!strncasecmp(req->header[x], name, len) &&
|
|
(req->header[x][len] == ':')) {
|
|
r = req->header[x] + len + 1;
|
|
while(*r && (*r < 33))
|
|
r++;
|
|
*start = x+1;
|
|
return r;
|
|
}
|
|
}
|
|
/* Don't return NULL, so get_header is always a valid pointer */
|
|
return "";
|
|
}
|
|
|
|
static char *get_header(struct mgcp_request *req, char *name)
|
|
{
|
|
int start = 0;
|
|
return __get_header(req, name, &start);
|
|
}
|
|
|
|
/* SC: get comma separated value */
|
|
static char *get_csv(char *c, int *len, char **next)
|
|
{
|
|
char *s;
|
|
|
|
*next = NULL, *len = 0;
|
|
if (!c) return NULL;
|
|
|
|
while (*c && (*c < 33 || *c == ','))
|
|
c++;
|
|
|
|
s = c;
|
|
while (*c && (*c >= 33 && *c != ','))
|
|
c++, (*len)++;
|
|
*next = c;
|
|
|
|
if (*len == 0)
|
|
s = NULL, *next = NULL;
|
|
|
|
return s;
|
|
}
|
|
|
|
static struct mgcp_subchannel *find_subchannel_and_lock(char *name, int msgid, struct sockaddr_in *sin)
|
|
{
|
|
struct mgcp_endpoint *p = NULL;
|
|
struct mgcp_subchannel *sub = NULL;
|
|
struct mgcp_gateway *g;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
char tmp[256] = "";
|
|
char *at = NULL, *c;
|
|
int found = 0;
|
|
if (name) {
|
|
strncpy(tmp, name, sizeof(tmp) - 1);
|
|
at = strchr(tmp, '@');
|
|
if (!at) {
|
|
ast_log(LOG_NOTICE, "Endpoint '%s' has no at sign!\n", name);
|
|
return NULL;
|
|
}
|
|
*at = '\0';
|
|
at++;
|
|
}
|
|
ast_mutex_lock(&gatelock);
|
|
if (at && (at[0] == '[')) {
|
|
at++;
|
|
c = strrchr(at, ']');
|
|
if (c)
|
|
*c = '\0';
|
|
}
|
|
g = gateways;
|
|
while(g) {
|
|
if ((!name || !strcasecmp(g->name, at)) &&
|
|
(sin || g->addr.sin_addr.s_addr || g->defaddr.sin_addr.s_addr)) {
|
|
/* Found the gateway. If it's dynamic, save it's address -- now for the endpoint */
|
|
if (sin && g->dynamic && name) {
|
|
if ((g->addr.sin_addr.s_addr != sin->sin_addr.s_addr) ||
|
|
(g->addr.sin_port != sin->sin_port)) {
|
|
memcpy(&g->addr, sin, sizeof(g->addr));
|
|
if (ast_ouraddrfor(&g->addr.sin_addr, &g->ourip))
|
|
memcpy(&g->ourip, &__ourip, sizeof(g->ourip));
|
|
if (option_verbose > 2)
|
|
ast_verbose(VERBOSE_PREFIX_3 "Registered MGCP gateway '%s' at %s port %d\n", g->name, ast_inet_ntoa(iabuf, sizeof(iabuf), g->addr.sin_addr), ntohs(g->addr.sin_port));
|
|
}
|
|
}
|
|
/* SC: not dynamic, check if the name matches */
|
|
else if (name) {
|
|
if (strcasecmp(g->name, at)) {
|
|
g = g->next;
|
|
continue;
|
|
}
|
|
}
|
|
/* SC: not dynamic, no name, check if the addr matches */
|
|
else if (!name && sin) {
|
|
if ((g->addr.sin_addr.s_addr != sin->sin_addr.s_addr) ||
|
|
(g->addr.sin_port != sin->sin_port)) {
|
|
g = g->next;
|
|
continue;
|
|
}
|
|
} else {
|
|
g = g->next;
|
|
continue;
|
|
}
|
|
/* SC */
|
|
p = g->endpoints;
|
|
while(p) {
|
|
if (option_debug)
|
|
ast_log(LOG_DEBUG, "Searching on %s@%s for subchannel\n",
|
|
p->name, g->name);
|
|
if (msgid) {
|
|
#if 0 /* SC: new transport mech */
|
|
sub = p->sub;
|
|
do {
|
|
if (option_debug)
|
|
ast_log(LOG_DEBUG, "Searching on %s@%s-%d for subchannel with lastout: %d\n",
|
|
p->name, g->name, sub->id, msgid);
|
|
if (sub->lastout == msgid) {
|
|
if (option_debug)
|
|
ast_log(LOG_DEBUG, "Found subchannel sub%d to handle request %d sub->lastout: %d\n",
|
|
sub->id, msgid, sub->lastout);
|
|
found = 1;
|
|
break;
|
|
}
|
|
sub = sub->next;
|
|
} while (sub != p->sub);
|
|
if (found) {
|
|
break;
|
|
}
|
|
#endif
|
|
/* SC */
|
|
sub = p->sub;
|
|
found = 1;
|
|
/* SC */
|
|
break;
|
|
} else if (name && !strcasecmp(p->name, tmp)) {
|
|
ast_log(LOG_DEBUG, "Coundn't determine subchannel, assuming current master %s@%s-%d\n",
|
|
p->name, g->name, p->sub->id);
|
|
sub = p->sub;
|
|
found = 1;
|
|
break;
|
|
}
|
|
p = p->next;
|
|
}
|
|
if (sub && found) {
|
|
ast_mutex_lock(&sub->lock);
|
|
break;
|
|
}
|
|
}
|
|
g = g->next;
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
if (!sub) {
|
|
if (name) {
|
|
if (g)
|
|
ast_log(LOG_NOTICE, "Endpoint '%s' not found on gateway '%s'\n", tmp, at);
|
|
else
|
|
ast_log(LOG_NOTICE, "Gateway '%s' (and thus its endpoint '%s') does not exist\n", at, tmp);
|
|
}
|
|
}
|
|
return sub;
|
|
}
|
|
|
|
static void parse(struct mgcp_request *req)
|
|
{
|
|
/* Divide fields by NULL's */
|
|
char *c;
|
|
int f = 0;
|
|
c = req->data;
|
|
|
|
/* First header starts immediately */
|
|
req->header[f] = c;
|
|
while(*c) {
|
|
if (*c == '\n') {
|
|
/* We've got a new header */
|
|
*c = 0;
|
|
#if 0
|
|
printf("Header: %s (%d)\n", req->header[f], strlen(req->header[f]));
|
|
#endif
|
|
if (ast_strlen_zero(req->header[f])) {
|
|
/* Line by itself means we're now in content */
|
|
c++;
|
|
break;
|
|
}
|
|
if (f >= MGCP_MAX_HEADERS - 1) {
|
|
ast_log(LOG_WARNING, "Too many MGCP headers...\n");
|
|
} else
|
|
f++;
|
|
req->header[f] = c + 1;
|
|
} else if (*c == '\r') {
|
|
/* Ignore but eliminate \r's */
|
|
*c = 0;
|
|
}
|
|
c++;
|
|
}
|
|
/* Check for last header */
|
|
if (!ast_strlen_zero(req->header[f]))
|
|
f++;
|
|
req->headers = f;
|
|
/* Now we process any mime content */
|
|
f = 0;
|
|
req->line[f] = c;
|
|
while(*c) {
|
|
if (*c == '\n') {
|
|
/* We've got a new line */
|
|
*c = 0;
|
|
#if 0
|
|
printf("Line: %s (%d)\n", req->line[f], strlen(req->line[f]));
|
|
#endif
|
|
if (f >= MGCP_MAX_LINES - 1) {
|
|
ast_log(LOG_WARNING, "Too many SDP lines...\n");
|
|
} else
|
|
f++;
|
|
req->line[f] = c + 1;
|
|
} else if (*c == '\r') {
|
|
/* Ignore and eliminate \r's */
|
|
*c = 0;
|
|
}
|
|
c++;
|
|
}
|
|
/* Check for last line */
|
|
if (!ast_strlen_zero(req->line[f]))
|
|
f++;
|
|
req->lines = f;
|
|
/* Parse up the initial header */
|
|
c = req->header[0];
|
|
while(*c && *c < 33) c++;
|
|
/* First the verb */
|
|
req->verb = c;
|
|
while(*c && (*c > 32)) c++;
|
|
if (*c) {
|
|
*c = '\0';
|
|
c++;
|
|
while(*c && (*c < 33)) c++;
|
|
req->identifier = c;
|
|
while(*c && (*c > 32)) c++;
|
|
if (*c) {
|
|
*c = '\0';
|
|
c++;
|
|
while(*c && (*c < 33)) c++;
|
|
req->endpoint = c;
|
|
while(*c && (*c > 32)) c++;
|
|
if (*c) {
|
|
*c = '\0';
|
|
c++;
|
|
while(*c && (*c < 33)) c++;
|
|
req->version = c;
|
|
while(*c && (*c > 32)) c++;
|
|
while(*c && (*c < 33)) c++;
|
|
while(*c && (*c > 32)) c++;
|
|
*c = '\0';
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose("Verb: '%s', Identifier: '%s', Endpoint: '%s', Version: '%s'\n",
|
|
req->verb, req->identifier, req->endpoint, req->version);
|
|
ast_verbose("%d headers, %d lines\n", req->headers, req->lines);
|
|
}
|
|
if (*c)
|
|
ast_log(LOG_WARNING, "Odd content, extra stuff left over ('%s')\n", c);
|
|
}
|
|
|
|
static int process_sdp(struct mgcp_subchannel *sub, struct mgcp_request *req)
|
|
{
|
|
char *m;
|
|
char *c;
|
|
char *a;
|
|
char host[258];
|
|
int len;
|
|
int portno;
|
|
int peercapability, peerNonCodecCapability;
|
|
struct sockaddr_in sin;
|
|
char *codecs;
|
|
struct ast_hostent ahp; struct hostent *hp;
|
|
int codec, codec_count=0;
|
|
int iterator;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
/* Get codec and RTP info from SDP */
|
|
m = get_sdp(req, "m");
|
|
c = get_sdp(req, "c");
|
|
if (ast_strlen_zero(m) || ast_strlen_zero(c)) {
|
|
ast_log(LOG_WARNING, "Insufficient information for SDP (m = '%s', c = '%s')\n", m, c);
|
|
return -1;
|
|
}
|
|
if (sscanf(c, "IN IP4 %256s", host) != 1) {
|
|
ast_log(LOG_WARNING, "Invalid host in c= line, '%s'\n", c);
|
|
return -1;
|
|
}
|
|
/* XXX This could block for a long time, and block the main thread! XXX */
|
|
hp = ast_gethostbyname(host, &ahp);
|
|
if (!hp) {
|
|
ast_log(LOG_WARNING, "Unable to lookup host in c= line, '%s'\n", c);
|
|
return -1;
|
|
}
|
|
if (sscanf(m, "audio %d RTP/AVP %n", &portno, &len) != 1) {
|
|
ast_log(LOG_WARNING, "Unable to determine port number for RTP in '%s'\n", m);
|
|
return -1;
|
|
}
|
|
sin.sin_family = AF_INET;
|
|
memcpy(&sin.sin_addr, hp->h_addr, sizeof(sin.sin_addr));
|
|
sin.sin_port = htons(portno);
|
|
ast_rtp_set_peer(sub->rtp, &sin);
|
|
#if 0
|
|
printf("Peer RTP is at port %s:%d\n", ast_inet_ntoa(iabuf, sizeof(iabuf), sin.sin_addr), ntohs(sin.sin_port));
|
|
#endif
|
|
/* Scan through the RTP payload types specified in a "m=" line: */
|
|
ast_rtp_pt_clear(sub->rtp);
|
|
codecs = ast_strdupa(m + len);
|
|
while (codecs && !ast_strlen_zero(codecs)) {
|
|
if (sscanf(codecs, "%d%n", &codec, &len) != 1) {
|
|
if (codec_count)
|
|
break;
|
|
ast_log(LOG_WARNING, "Error in codec string '%s' at '%s'\n", m, codecs);
|
|
return -1;
|
|
}
|
|
ast_rtp_set_m_type(sub->rtp, codec);
|
|
codec_count++;
|
|
codecs += len;
|
|
}
|
|
|
|
/* Next, scan through each "a=rtpmap:" line, noting each */
|
|
/* specified RTP payload type (with corresponding MIME subtype): */
|
|
sdpLineNum_iterator_init(&iterator);
|
|
while ((a = get_sdp_iterate(&iterator, req, "a"))[0] != '\0') {
|
|
char* mimeSubtype = ast_strdupa(a); /* ensures we have enough space */
|
|
if (sscanf(a, "rtpmap: %u %[^/]/", &codec, mimeSubtype) != 2)
|
|
continue;
|
|
/* Note: should really look at the 'freq' and '#chans' params too */
|
|
ast_rtp_set_rtpmap_type(sub->rtp, codec, "audio", mimeSubtype);
|
|
}
|
|
|
|
/* Now gather all of the codecs that were asked for: */
|
|
ast_rtp_get_current_formats(sub->rtp, &peercapability, &peerNonCodecCapability);
|
|
p->capability = capability & peercapability;
|
|
if (mgcpdebug) {
|
|
ast_verbose("Capabilities: us - %d, them - %d, combined - %d\n",
|
|
capability, peercapability, p->capability);
|
|
ast_verbose("Non-codec capabilities: us - %d, them - %d, combined - %d\n",
|
|
nonCodecCapability, peerNonCodecCapability, p->nonCodecCapability);
|
|
}
|
|
if (!p->capability) {
|
|
ast_log(LOG_WARNING, "No compatible codecs!\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int add_header(struct mgcp_request *req, char *var, char *value)
|
|
{
|
|
if (req->len >= sizeof(req->data) - 4) {
|
|
ast_log(LOG_WARNING, "Out of space, can't add anymore\n");
|
|
return -1;
|
|
}
|
|
if (req->lines) {
|
|
ast_log(LOG_WARNING, "Can't add more headers when lines have been added\n");
|
|
return -1;
|
|
}
|
|
req->header[req->headers] = req->data + req->len;
|
|
snprintf(req->header[req->headers], sizeof(req->data) - req->len, "%s: %s\r\n", var, value);
|
|
req->len += strlen(req->header[req->headers]);
|
|
if (req->headers < MGCP_MAX_HEADERS)
|
|
req->headers++;
|
|
else {
|
|
ast_log(LOG_WARNING, "Out of header space\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int add_line(struct mgcp_request *req, char *line)
|
|
{
|
|
if (req->len >= sizeof(req->data) - 4) {
|
|
ast_log(LOG_WARNING, "Out of space, can't add anymore\n");
|
|
return -1;
|
|
}
|
|
if (!req->lines) {
|
|
/* Add extra empty return */
|
|
snprintf(req->data + req->len, sizeof(req->data) - req->len, "\r\n");
|
|
req->len += strlen(req->data + req->len);
|
|
}
|
|
req->line[req->lines] = req->data + req->len;
|
|
snprintf(req->line[req->lines], sizeof(req->data) - req->len, "%s", line);
|
|
req->len += strlen(req->line[req->lines]);
|
|
if (req->lines < MGCP_MAX_LINES)
|
|
req->lines++;
|
|
else {
|
|
ast_log(LOG_WARNING, "Out of line space\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int init_resp(struct mgcp_request *req, char *resp, struct mgcp_request *orig, char *resprest)
|
|
{
|
|
/* Initialize a response */
|
|
if (req->headers || req->len) {
|
|
ast_log(LOG_WARNING, "Request already initialized?!?\n");
|
|
return -1;
|
|
}
|
|
req->header[req->headers] = req->data + req->len;
|
|
snprintf(req->header[req->headers], sizeof(req->data) - req->len, "%s %s %s\r\n", resp, orig->identifier, resprest);
|
|
req->len += strlen(req->header[req->headers]);
|
|
if (req->headers < MGCP_MAX_HEADERS)
|
|
req->headers++;
|
|
else
|
|
ast_log(LOG_WARNING, "Out of header space\n");
|
|
return 0;
|
|
}
|
|
|
|
static int init_req(struct mgcp_endpoint *p, struct mgcp_request *req, char *verb)
|
|
{
|
|
/* Initialize a response */
|
|
if (req->headers || req->len) {
|
|
ast_log(LOG_WARNING, "Request already initialized?!?\n");
|
|
return -1;
|
|
}
|
|
req->header[req->headers] = req->data + req->len;
|
|
/* SC: check if we need brackets around the gw name */
|
|
if (p->parent->isnamedottedip)
|
|
snprintf(req->header[req->headers], sizeof(req->data) - req->len, "%s %d %s@[%s] MGCP 1.0\r\n", verb, oseq, p->name, p->parent->name);
|
|
else
|
|
snprintf(req->header[req->headers], sizeof(req->data) - req->len, "%s %d %s@%s MGCP 1.0\r\n", verb, oseq, p->name, p->parent->name);
|
|
req->len += strlen(req->header[req->headers]);
|
|
if (req->headers < MGCP_MAX_HEADERS)
|
|
req->headers++;
|
|
else
|
|
ast_log(LOG_WARNING, "Out of header space\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int respprep(struct mgcp_request *resp, struct mgcp_endpoint *p, char *msg, struct mgcp_request *req, char *msgrest)
|
|
{
|
|
memset(resp, 0, sizeof(*resp));
|
|
init_resp(resp, msg, req, msgrest);
|
|
return 0;
|
|
}
|
|
|
|
static int reqprep(struct mgcp_request *req, struct mgcp_endpoint *p, char *verb)
|
|
{
|
|
memset(req, 0, sizeof(struct mgcp_request));
|
|
oseq++;
|
|
if (oseq > 999999999)
|
|
oseq = 1;
|
|
init_req(p, req, verb);
|
|
return 0;
|
|
}
|
|
|
|
static int transmit_response(struct mgcp_subchannel *sub, char *msg, struct mgcp_request *req, char *msgrest)
|
|
{
|
|
struct mgcp_request resp;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct mgcp_response *mgr;
|
|
|
|
respprep(&resp, p, msg, req, msgrest);
|
|
mgr = malloc(sizeof(struct mgcp_response) + resp.len + 1);
|
|
if (mgr) {
|
|
/* Store MGCP response in case we have to retransmit */
|
|
memset(mgr, 0, sizeof(struct mgcp_response));
|
|
sscanf(req->identifier, "%d", &mgr->seqno);
|
|
time(&mgr->whensent);
|
|
mgr->len = resp.len;
|
|
memcpy(mgr->buf, resp.data, resp.len);
|
|
mgr->buf[resp.len] = '\0';
|
|
mgr->next = p->parent->responses;
|
|
p->parent->responses = mgr;
|
|
}
|
|
return send_response(sub, &resp);
|
|
}
|
|
|
|
|
|
static int add_sdp(struct mgcp_request *resp, struct mgcp_subchannel *sub, struct ast_rtp *rtp)
|
|
{
|
|
int len;
|
|
int codec;
|
|
char costr[80];
|
|
struct sockaddr_in sin;
|
|
char v[256];
|
|
char s[256];
|
|
char o[256];
|
|
char c[256];
|
|
char t[256];
|
|
char m[256] = "";
|
|
char a[1024] = "";
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
int x;
|
|
struct sockaddr_in dest;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
/* XXX We break with the "recommendation" and send our IP, in order that our
|
|
peer doesn't have to ast_gethostbyname() us XXX */
|
|
len = 0;
|
|
if (!sub->rtp) {
|
|
ast_log(LOG_WARNING, "No way to add SDP without an RTP structure\n");
|
|
return -1;
|
|
}
|
|
ast_rtp_get_us(sub->rtp, &sin);
|
|
if (rtp) {
|
|
ast_rtp_get_peer(rtp, &dest);
|
|
} else {
|
|
if (sub->tmpdest.sin_addr.s_addr) {
|
|
dest.sin_addr = sub->tmpdest.sin_addr;
|
|
dest.sin_port = sub->tmpdest.sin_port;
|
|
/* Reset temporary destination */
|
|
memset(&sub->tmpdest, 0, sizeof(sub->tmpdest));
|
|
} else {
|
|
dest.sin_addr = p->parent->ourip;
|
|
dest.sin_port = sin.sin_port;
|
|
}
|
|
}
|
|
if (mgcpdebug) {
|
|
ast_verbose("We're at %s port %d\n", ast_inet_ntoa(iabuf, sizeof(iabuf), p->parent->ourip), ntohs(sin.sin_port));
|
|
}
|
|
snprintf(v, sizeof(v), "v=0\r\n");
|
|
snprintf(o, sizeof(o), "o=root %d %d IN IP4 %s\r\n", getpid(), getpid(), ast_inet_ntoa(iabuf, sizeof(iabuf), dest.sin_addr));
|
|
snprintf(s, sizeof(s), "s=session\r\n");
|
|
snprintf(c, sizeof(c), "c=IN IP4 %s\r\n", ast_inet_ntoa(iabuf, sizeof(iabuf), dest.sin_addr));
|
|
snprintf(t, sizeof(t), "t=0 0\r\n");
|
|
snprintf(m, sizeof(m), "m=audio %d RTP/AVP", ntohs(dest.sin_port));
|
|
for (x = 1; x <= AST_FORMAT_MAX_AUDIO; x <<= 1) {
|
|
if (p->capability & x) {
|
|
if (mgcpdebug) {
|
|
ast_verbose("Answering with capability %d\n", x);
|
|
}
|
|
codec = ast_rtp_lookup_code(sub->rtp, 1, x);
|
|
if (codec > -1) {
|
|
snprintf(costr, sizeof(costr), " %d", codec);
|
|
strncat(m, costr, sizeof(m) - strlen(m) - 1);
|
|
snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/8000\r\n", codec, ast_rtp_lookup_mime_subtype(1, x));
|
|
strncat(a, costr, sizeof(a) - strlen(a) - 1);
|
|
}
|
|
}
|
|
}
|
|
for (x = 1; x <= AST_RTP_MAX; x <<= 1) {
|
|
if (p->nonCodecCapability & x) {
|
|
if (mgcpdebug) {
|
|
ast_verbose("Answering with non-codec capability %d\n", x);
|
|
}
|
|
codec = ast_rtp_lookup_code(sub->rtp, 0, x);
|
|
if (codec > -1) {
|
|
snprintf(costr, sizeof(costr), " %d", codec);
|
|
strncat(m, costr, sizeof(m) - strlen(m) - 1);
|
|
snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/8000\r\n", codec, ast_rtp_lookup_mime_subtype(0, x));
|
|
strncat(a, costr, sizeof(a) - strlen(a) - 1);
|
|
if (x == AST_RTP_DTMF) {
|
|
/* Indicate we support DTMF... Not sure about 16,
|
|
but MSN supports it so dang it, we will too... */
|
|
snprintf(costr, sizeof costr, "a=fmtp:%d 0-16\r\n", codec);
|
|
strncat(a, costr, sizeof(a) - strlen(a) - 1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
strncat(m, "\r\n", sizeof(m) - strlen(m) - 1);
|
|
len = strlen(v) + strlen(s) + strlen(o) + strlen(c) + strlen(t) + strlen(m) + strlen(a);
|
|
snprintf(costr, sizeof(costr), "%d", len);
|
|
add_line(resp, v);
|
|
add_line(resp, o);
|
|
add_line(resp, s);
|
|
add_line(resp, c);
|
|
add_line(resp, t);
|
|
add_line(resp, m);
|
|
add_line(resp, a);
|
|
return 0;
|
|
}
|
|
|
|
static int transmit_modify_with_sdp(struct mgcp_subchannel *sub, struct ast_rtp *rtp, int codecs)
|
|
{
|
|
struct mgcp_request resp;
|
|
char local[256];
|
|
char tmp[80];
|
|
int x;
|
|
int capability;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
capability = p->capability;
|
|
if (codecs)
|
|
capability = codecs;
|
|
if (ast_strlen_zero(sub->cxident) && rtp) {
|
|
/* We don't have a CXident yet, store the destination and
|
|
wait a bit */
|
|
ast_rtp_get_peer(rtp, &sub->tmpdest);
|
|
return 0;
|
|
}
|
|
snprintf(local, sizeof(local), "p:20");
|
|
for (x=1;x<= AST_FORMAT_MAX_AUDIO; x <<= 1) {
|
|
if (p->capability & x) {
|
|
snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype(1, x));
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
}
|
|
reqprep(&resp, p, "MDCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
add_header(&resp, "L", local);
|
|
add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
|
|
/* SC: X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
add_header(&resp, "I", sub->cxident);
|
|
/*add_header(&resp, "S", "");*/
|
|
ast_rtp_offered_from_local(sub->rtp, 0);
|
|
add_sdp(&resp, sub, rtp);
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_MDCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq); /* SC */
|
|
}
|
|
|
|
static int transmit_connect_with_sdp(struct mgcp_subchannel *sub, struct ast_rtp *rtp)
|
|
{
|
|
struct mgcp_request resp;
|
|
char local[256];
|
|
char tmp[80];
|
|
int x;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
snprintf(local, sizeof(local), "p:20");
|
|
for (x=1;x<= AST_FORMAT_MAX_AUDIO; x <<= 1) {
|
|
if (p->capability & x) {
|
|
snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype(1, x));
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
}
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Creating connection for %s@%s-%d in cxmode: %s callid: %s\n",
|
|
p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode], sub->callid);
|
|
}
|
|
reqprep(&resp, p, "CRCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
add_header(&resp, "L", local);
|
|
add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
|
|
/* SC: X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
/*add_header(&resp, "S", "");*/
|
|
ast_rtp_offered_from_local(sub->rtp, 1);
|
|
add_sdp(&resp, sub, rtp);
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_CRCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq); /* SC */
|
|
}
|
|
|
|
static int transmit_notify_request(struct mgcp_subchannel *sub, char *tone)
|
|
{
|
|
struct mgcp_request resp;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Asked to indicate tone: %s on %s@%s-%d in cxmode: %s\n",
|
|
tone, p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode]);
|
|
}
|
|
strncpy(p->curtone, tone, sizeof(p->curtone) - 1);
|
|
reqprep(&resp, p, "RQNT");
|
|
add_header(&resp, "X", p->rqnt_ident); /* SC */
|
|
switch (p->hookstate) {
|
|
case MGCP_ONHOOK:
|
|
add_header(&resp, "R", "L/hd(N)");
|
|
break;
|
|
case MGCP_OFFHOOK:
|
|
add_header(&resp, "R", (sub->rtp && (p->dtmfmode & MGCP_DTMF_INBAND)) ? "L/hu(N),L/hf(N)" : "L/hu(N),L/hf(N),D/[0-9#*](N)");
|
|
break;
|
|
}
|
|
if (!ast_strlen_zero(tone)) {
|
|
add_header(&resp, "S", tone);
|
|
}
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_RQNT;
|
|
resp.trid = oseq;
|
|
return send_request(p, NULL, &resp, oseq); /* SC */
|
|
}
|
|
|
|
static int transmit_notify_request_with_callerid(struct mgcp_subchannel *sub, char *tone, char *callernum, char *callername)
|
|
{
|
|
struct mgcp_request resp;
|
|
char tone2[256];
|
|
char *l, *n;
|
|
time_t t;
|
|
struct tm tm;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
time(&t);
|
|
localtime_r(&t,&tm);
|
|
n = callername;
|
|
l = callernum;
|
|
if (!n)
|
|
n = "";
|
|
if (!l)
|
|
l = "";
|
|
|
|
/* Keep track of last callerid for blacklist and callreturn */
|
|
strncpy(p->lastcallerid, l, sizeof(p->lastcallerid) - 1);
|
|
|
|
snprintf(tone2, sizeof(tone2), "%s,L/ci(%02d/%02d/%02d/%02d,%s,%s)", tone,
|
|
tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, l, n);
|
|
strncpy(p->curtone, tone, sizeof(p->curtone) - 1);
|
|
reqprep(&resp, p, "RQNT");
|
|
add_header(&resp, "X", p->rqnt_ident); /* SC */
|
|
switch (p->hookstate) {
|
|
case MGCP_ONHOOK:
|
|
add_header(&resp, "R", "L/hd(N)");
|
|
break;
|
|
case MGCP_OFFHOOK:
|
|
add_header(&resp, "R", (sub->rtp && (p->dtmfmode & MGCP_DTMF_INBAND)) ? "L/hu(N),L/hf(N)" : "L/hu(N),L/hf(N),D/[0-9#*](N)");
|
|
break;
|
|
}
|
|
if (!ast_strlen_zero(tone2)) {
|
|
add_header(&resp, "S", tone2);
|
|
}
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Asked to indicate tone: %s on %s@%s-%d in cxmode: %s\n",
|
|
tone2, p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode]);
|
|
}
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_RQNT;
|
|
resp.trid = oseq;
|
|
return send_request(p, NULL, &resp, oseq); /* SC */
|
|
}
|
|
|
|
static int transmit_modify_request(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_request resp;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
if (ast_strlen_zero(sub->cxident)) {
|
|
/* We don't have a CXident yet, store the destination and
|
|
wait a bit */
|
|
return 0;
|
|
}
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Modified %s@%s-%d with new mode: %s on callid: %s\n",
|
|
p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode], sub->callid);
|
|
}
|
|
reqprep(&resp, p, "MDCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
|
|
/* SC: X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
add_header(&resp, "I", sub->cxident);
|
|
switch (sub->parent->hookstate) {
|
|
case MGCP_ONHOOK:
|
|
add_header(&resp, "R", "L/hd(N)");
|
|
break;
|
|
case MGCP_OFFHOOK:
|
|
add_header(&resp, "R", (sub->rtp && (p->dtmfmode & MGCP_DTMF_INBAND)) ? "L/hu(N), L/hf(N)" : "L/hu(N),L/hf(N),D/[0-9#*](N)");
|
|
break;
|
|
}
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_MDCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq); /* SC */
|
|
}
|
|
|
|
|
|
static int transmit_audit_endpoint(struct mgcp_endpoint *p)
|
|
{
|
|
struct mgcp_request resp;
|
|
reqprep(&resp, p, "AUEP");
|
|
/* SC: removed unknown param VS */
|
|
/*add_header(&resp, "F", "A,R,D,S,X,N,I,T,O,ES,E,MD,M");*/
|
|
add_header(&resp, "F", "A");
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_AUEP;
|
|
resp.trid = oseq;
|
|
return send_request(p, NULL, &resp, oseq); /* SC */
|
|
}
|
|
|
|
static int transmit_connection_del(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct mgcp_request resp;
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Delete connection %s %s@%s-%d with new mode: %s on callid: %s\n",
|
|
sub->cxident, p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode], sub->callid);
|
|
}
|
|
reqprep(&resp, p, "DLCX");
|
|
/* SC: check if call id is avail */
|
|
if (sub->callid[0])
|
|
add_header(&resp, "C", sub->callid);
|
|
/* SC: X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
/* SC: check if cxident is avail */
|
|
if (sub->cxident[0])
|
|
add_header(&resp, "I", sub->cxident);
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_DLCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq); /* SC */
|
|
}
|
|
|
|
static int transmit_connection_del_w_params(struct mgcp_endpoint *p, char *callid, char *cxident)
|
|
{
|
|
struct mgcp_request resp;
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Delete connection %s %s@%s on callid: %s\n",
|
|
cxident ? cxident : "", p->name, p->parent->name, callid ? callid : "");
|
|
}
|
|
reqprep(&resp, p, "DLCX");
|
|
/* SC: check if call id is avail */
|
|
if (callid && *callid)
|
|
add_header(&resp, "C", callid);
|
|
/* SC: check if cxident is avail */
|
|
if (cxident && *cxident)
|
|
add_header(&resp, "I", cxident);
|
|
/* SC: fill in new fields */
|
|
resp.cmd = MGCP_CMD_DLCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, p->sub, &resp, oseq);
|
|
}
|
|
|
|
/* SC: cleanup pending commands */
|
|
static void dump_cmd_queues(struct mgcp_endpoint *p, struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_request *t, *q;
|
|
|
|
if (p) {
|
|
ast_mutex_lock(&p->rqnt_queue_lock);
|
|
for (q = p->rqnt_queue; q; t = q->next, free(q), q=t);
|
|
p->rqnt_queue = NULL;
|
|
ast_mutex_unlock(&p->rqnt_queue_lock);
|
|
|
|
ast_mutex_lock(&p->cmd_queue_lock);
|
|
for (q = p->cmd_queue; q; t = q->next, free(q), q=t);
|
|
p->cmd_queue = NULL;
|
|
ast_mutex_unlock(&p->cmd_queue_lock);
|
|
|
|
ast_mutex_lock(&p->sub->cx_queue_lock);
|
|
for (q = p->sub->cx_queue; q; t = q->next, free(q), q=t);
|
|
p->sub->cx_queue = NULL;
|
|
ast_mutex_unlock(&p->sub->cx_queue_lock);
|
|
|
|
ast_mutex_lock(&p->sub->next->cx_queue_lock);
|
|
for (q = p->sub->next->cx_queue; q; t = q->next, free(q), q=t);
|
|
p->sub->next->cx_queue = NULL;
|
|
ast_mutex_unlock(&p->sub->next->cx_queue_lock);
|
|
} else if (sub) {
|
|
ast_mutex_lock(&sub->cx_queue_lock);
|
|
for (q = sub->cx_queue; q; t = q->next, free(q), q=t);
|
|
sub->cx_queue = NULL;
|
|
ast_mutex_unlock(&sub->cx_queue_lock);
|
|
}
|
|
}
|
|
|
|
|
|
/* SC: remove command transaction from queue */
|
|
static struct mgcp_request *find_command(struct mgcp_endpoint *p, struct mgcp_subchannel *sub,
|
|
struct mgcp_request **queue, ast_mutex_t *l, int ident)
|
|
{
|
|
struct mgcp_request *prev, *req;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
|
|
ast_mutex_lock(l);
|
|
for (prev = NULL, req = *queue; req; prev = req, req = req->next) {
|
|
if (req->trid == ident) {
|
|
/* remove from queue */
|
|
if (!prev)
|
|
*queue = req->next;
|
|
else
|
|
prev->next = req->next;
|
|
|
|
/* send next pending command */
|
|
if (*queue) {
|
|
if (mgcpdebug) {
|
|
ast_verbose("Posting Queued Request:\n%s to %s:%d\n", (*queue)->data,
|
|
ast_inet_ntoa(iabuf, sizeof(iabuf), p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
}
|
|
|
|
mgcp_postrequest(p, sub, (*queue)->data, (*queue)->len, (*queue)->trid);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
ast_mutex_unlock(l);
|
|
return req;
|
|
}
|
|
|
|
/* SC: modified for new transport mechanism */
|
|
static void handle_response(struct mgcp_endpoint *p, struct mgcp_subchannel *sub,
|
|
int result, unsigned int ident, struct mgcp_request *resp)
|
|
{
|
|
char *c;
|
|
struct mgcp_request *req;
|
|
struct mgcp_gateway *gw = p->parent;
|
|
|
|
if (result < 200) {
|
|
/* provisional response */
|
|
return;
|
|
}
|
|
|
|
if (p->slowsequence)
|
|
req = find_command(p, sub, &p->cmd_queue, &p->cmd_queue_lock, ident);
|
|
else if (sub)
|
|
req = find_command(p, sub, &sub->cx_queue, &sub->cx_queue_lock, ident);
|
|
else if (!(req = find_command(p, sub, &p->rqnt_queue, &p->rqnt_queue_lock, ident)))
|
|
req = find_command(p, sub, &p->cmd_queue, &p->cmd_queue_lock, ident);
|
|
|
|
if (!req) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "No command found on [%s] for transaction %d. Ignoring...\n",
|
|
gw->name, ident);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (p && (result >= 400) && (result <= 599)) {
|
|
switch (result) {
|
|
case 401:
|
|
p->hookstate = MGCP_OFFHOOK;
|
|
break;
|
|
case 402:
|
|
p->hookstate = MGCP_ONHOOK;
|
|
break;
|
|
case 406:
|
|
ast_log(LOG_NOTICE, "Transaction %d timed out\n", ident);
|
|
break;
|
|
case 407:
|
|
ast_log(LOG_NOTICE, "Transaction %d aborted\n", ident);
|
|
break;
|
|
}
|
|
if (sub) {
|
|
if (sub->owner) {
|
|
ast_log(LOG_NOTICE, "Terminating on result %d from %s@%s-%d\n",
|
|
result, p->name, p->parent->name, sub ? sub->id:-1);
|
|
mgcp_queue_hangup(sub);
|
|
}
|
|
} else {
|
|
if (p->sub->next->owner) {
|
|
ast_log(LOG_NOTICE, "Terminating on result %d from %s@%s-%d\n",
|
|
result, p->name, p->parent->name, sub ? sub->id:-1);
|
|
mgcp_queue_hangup(p->sub);
|
|
}
|
|
|
|
if (p->sub->owner) {
|
|
ast_log(LOG_NOTICE, "Terminating on result %d from %s@%s-%d\n",
|
|
result, p->name, p->parent->name, sub ? sub->id:-1);
|
|
mgcp_queue_hangup(p->sub);
|
|
}
|
|
|
|
dump_cmd_queues(p, NULL);
|
|
}
|
|
}
|
|
|
|
if (resp) {
|
|
if (req->cmd == MGCP_CMD_CRCX) {
|
|
if ((c = get_header(resp, "I"))) {
|
|
if (!ast_strlen_zero(c) && sub) {
|
|
/* SC: if we are hanging up do not process this conn. */
|
|
if (sub->owner) {
|
|
if (!ast_strlen_zero(sub->cxident)) {
|
|
if (strcasecmp(c, sub->cxident)) {
|
|
ast_log(LOG_WARNING, "Subchannel already has a cxident. sub->cxident: %s requested %s\n", sub->cxident, c);
|
|
}
|
|
}
|
|
strncpy(sub->cxident, c, sizeof(sub->cxident) - 1);
|
|
if (sub->tmpdest.sin_addr.s_addr) {
|
|
transmit_modify_with_sdp(sub, NULL, 0);
|
|
}
|
|
} else {
|
|
/* XXX SC: delete this one
|
|
callid and conn id may already be lost.
|
|
so the following del conn may have a side effect of
|
|
cleaning up the next subchannel */
|
|
transmit_connection_del(sub);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (req->cmd == MGCP_CMD_AUEP) {
|
|
/* SC: check stale connection ids */
|
|
if ((c = get_header(resp, "I"))) {
|
|
char *v, *n;
|
|
int len;
|
|
while ((v = get_csv(c, &len, &n))) {
|
|
if (len) {
|
|
if (strncasecmp(v, p->sub->cxident, len) &&
|
|
strncasecmp(v, p->sub->next->cxident, len)) {
|
|
/* connection id not found. delete it */
|
|
char cxident[80];
|
|
memcpy(cxident, v, len);
|
|
cxident[len] = '\0';
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Non existing connection id %s on %s@%s \n",
|
|
cxident, p->name, gw->name);
|
|
}
|
|
transmit_connection_del_w_params(p, NULL, cxident);
|
|
}
|
|
}
|
|
c = n;
|
|
}
|
|
}
|
|
|
|
/* Try to determine the hookstate returned from an audit endpoint command */
|
|
if ((c = get_header(resp, "ES"))) {
|
|
if (!ast_strlen_zero(c)) {
|
|
if (strstr(c, "hu")) {
|
|
if (p->hookstate != MGCP_ONHOOK) {
|
|
/* SC: XXX cleanup if we think we are offhook XXX */
|
|
if ((p->sub->owner || p->sub->next->owner ) &&
|
|
p->hookstate == MGCP_OFFHOOK)
|
|
mgcp_queue_hangup(sub);
|
|
p->hookstate = MGCP_ONHOOK;
|
|
|
|
/* SC: update the requested events according to the new hookstate */
|
|
transmit_notify_request(p->sub, "");
|
|
|
|
/* SC: verbose level check */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Setting hookstate of %s@%s to ONHOOK\n", p->name, gw->name);
|
|
}
|
|
}
|
|
} else if (strstr(c, "hd")) {
|
|
if (p->hookstate != MGCP_OFFHOOK) {
|
|
p->hookstate = MGCP_OFFHOOK;
|
|
|
|
/* SC: update the requested events according to the new hookstate */
|
|
transmit_notify_request(p->sub, "");
|
|
|
|
/* SC: verbose level check */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Setting hookstate of %s@%s to OFFHOOK\n", p->name, gw->name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (resp && resp->lines) {
|
|
/* SC: do not process sdp if we are hanging up. this may be a late response */
|
|
if (sub && sub->owner) {
|
|
if (!sub->rtp)
|
|
start_rtp(sub);
|
|
if (sub->rtp)
|
|
process_sdp(sub, resp);
|
|
}
|
|
}
|
|
}
|
|
|
|
free(req);
|
|
}
|
|
|
|
static void start_rtp(struct mgcp_subchannel *sub)
|
|
{
|
|
ast_mutex_lock(&sub->lock);
|
|
/* SC: check again to be on the safe side */
|
|
if (sub->rtp) {
|
|
ast_rtp_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
/* Allocate the RTP now */
|
|
sub->rtp = ast_rtp_new_with_bindaddr(sched, io, 1, 0, bindaddr.sin_addr);
|
|
if (sub->rtp && sub->owner)
|
|
sub->owner->fds[0] = ast_rtp_fd(sub->rtp);
|
|
if (sub->rtp)
|
|
ast_rtp_setnat(sub->rtp, sub->nat);
|
|
#if 0
|
|
ast_rtp_set_callback(p->rtp, rtpready);
|
|
ast_rtp_set_data(p->rtp, p);
|
|
#endif
|
|
/* Make a call*ID */
|
|
snprintf(sub->callid, sizeof(sub->callid), "%08x%s", rand(), sub->txident);
|
|
/* Transmit the connection create */
|
|
transmit_connect_with_sdp(sub, NULL);
|
|
ast_mutex_unlock(&sub->lock);
|
|
}
|
|
|
|
static void *mgcp_ss(void *data)
|
|
{
|
|
struct ast_channel *chan = data;
|
|
struct mgcp_subchannel *sub = chan->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
char exten[AST_MAX_EXTENSION] = "";
|
|
int len = 0;
|
|
int timeout = firstdigittimeout;
|
|
int res;
|
|
int getforward = 0;
|
|
|
|
while(len < AST_MAX_EXTENSION-1) {
|
|
res = ast_waitfordigit(chan, timeout);
|
|
timeout = 0;
|
|
if (res < 0) {
|
|
ast_log(LOG_DEBUG, "waitfordigit returned < 0...\n");
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, -1);*/
|
|
ast_indicate(chan, -1);
|
|
ast_hangup(chan);
|
|
return NULL;
|
|
} else if (res) {
|
|
exten[len++]=res;
|
|
exten[len] = '\0';
|
|
}
|
|
if (!ast_ignore_pattern(chan->context, exten)) {
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, -1);*/
|
|
ast_indicate(chan, -1);
|
|
} else {
|
|
/* XXX Redundant? We should already be playing dialtone */
|
|
/*tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALTONE);*/
|
|
transmit_notify_request(sub, "L/dl");
|
|
}
|
|
if (ast_exists_extension(chan, chan->context, exten, 1, p->cid_num)) {
|
|
if (!res || !ast_matchmore_extension(chan, chan->context, exten, 1, p->cid_num)) {
|
|
if (getforward) {
|
|
/* Record this as the forwarding extension */
|
|
strncpy(p->call_forward, exten, sizeof(p->call_forward) - 1);
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Setting call forward to '%s' on channel %s\n",
|
|
p->call_forward, chan->name);
|
|
}
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
if (res)
|
|
break;
|
|
usleep(500000);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, -1);*/
|
|
ast_indicate(chan, -1);
|
|
sleep(1);
|
|
memset(exten, 0, sizeof(exten));
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALTONE);*/
|
|
transmit_notify_request(sub, "L/dl");
|
|
len = 0;
|
|
getforward = 0;
|
|
} else {
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, -1);*/
|
|
ast_indicate(chan, -1);
|
|
strncpy(chan->exten, exten, sizeof(chan->exten)-1);
|
|
if (!ast_strlen_zero(p->cid_num)) {
|
|
if (!p->hidecallerid) {
|
|
/* SC: free existing chan->callerid */
|
|
if (chan->cid.cid_num)
|
|
free(chan->cid.cid_num);
|
|
chan->cid.cid_num = strdup(p->cid_num);
|
|
/* SC: free existing chan->callerid */
|
|
if (chan->cid.cid_name)
|
|
free(chan->cid.cid_name);
|
|
chan->cid.cid_name = strdup(p->cid_name);
|
|
}
|
|
if (chan->cid.cid_ani)
|
|
free(chan->cid.cid_ani);
|
|
chan->cid.cid_ani = strdup(p->cid_num);
|
|
}
|
|
ast_setstate(chan, AST_STATE_RING);
|
|
/*zt_enable_ec(p);*/
|
|
if (p->dtmfmode & MGCP_DTMF_HYBRID) {
|
|
p->dtmfmode |= MGCP_DTMF_INBAND;
|
|
ast_indicate(chan, -1);
|
|
}
|
|
res = ast_pbx_run(chan);
|
|
if (res) {
|
|
ast_log(LOG_WARNING, "PBX exited non-zero\n");
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_CONGESTION);*/
|
|
/*transmit_notify_request(p, "nbz", 1);*/
|
|
transmit_notify_request(sub, "G/cg");
|
|
}
|
|
return NULL;
|
|
}
|
|
} else {
|
|
/* It's a match, but they just typed a digit, and there is an ambiguous match,
|
|
so just set the timeout to matchdigittimeout and wait some more */
|
|
timeout = matchdigittimeout;
|
|
}
|
|
} else if (res == 0) {
|
|
ast_log(LOG_DEBUG, "not enough digits (and no ambiguous match)...\n");
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_CONGESTION);*/
|
|
transmit_notify_request(sub, "G/cg");
|
|
/*zt_wait_event(p->subs[index].zfd);*/
|
|
ast_hangup(chan);
|
|
return NULL;
|
|
} else if (p->hascallwaiting && p->callwaiting && !strcmp(exten, "*70")) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Disabling call waiting on %s\n", chan->name);
|
|
}
|
|
/* Disable call waiting if enabled */
|
|
p->callwaiting = 0;
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
len = 0;
|
|
memset(exten, 0, sizeof(exten));
|
|
timeout = firstdigittimeout;
|
|
} else if (!strcmp(exten,ast_pickup_ext())) {
|
|
/* Scan all channels and see if any there
|
|
* ringing channqels with that have call groups
|
|
* that equal this channels pickup group
|
|
*/
|
|
if (ast_pickup_call(chan)) {
|
|
ast_log(LOG_WARNING, "No call pickup possible...\n");
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_CONGESTION);*/
|
|
transmit_notify_request(sub, "G/cg");
|
|
}
|
|
ast_hangup(chan);
|
|
return NULL;
|
|
} else if (!p->hidecallerid && !strcmp(exten, "*67")) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Disabling Caller*ID on %s\n", chan->name);
|
|
}
|
|
/* Disable Caller*ID if enabled */
|
|
p->hidecallerid = 1;
|
|
if (chan->cid.cid_num)
|
|
free(chan->cid.cid_num);
|
|
chan->cid.cid_num = NULL;
|
|
if (chan->cid.cid_name)
|
|
free(chan->cid.cid_name);
|
|
chan->cid.cid_name = NULL;
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
len = 0;
|
|
memset(exten, 0, sizeof(exten));
|
|
timeout = firstdigittimeout;
|
|
} else if (p->callreturn && !strcmp(exten, "*69")) {
|
|
res = 0;
|
|
if (!ast_strlen_zero(p->lastcallerid)) {
|
|
res = ast_say_digit_str(chan, p->lastcallerid, "", chan->language);
|
|
}
|
|
if (!res)
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
break;
|
|
} else if (!strcmp(exten, "*78")) {
|
|
/* Do not disturb */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Enabled DND on channel %s\n", chan->name);
|
|
}
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
p->dnd = 1;
|
|
getforward = 0;
|
|
memset(exten, 0, sizeof(exten));
|
|
len = 0;
|
|
} else if (!strcmp(exten, "*79")) {
|
|
/* Do not disturb */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Disabled DND on channel %s\n", chan->name);
|
|
}
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
p->dnd = 0;
|
|
getforward = 0;
|
|
memset(exten, 0, sizeof(exten));
|
|
len = 0;
|
|
} else if (p->cancallforward && !strcmp(exten, "*72")) {
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
getforward = 1;
|
|
memset(exten, 0, sizeof(exten));
|
|
len = 0;
|
|
} else if (p->cancallforward && !strcmp(exten, "*73")) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Cancelling call forwarding on channel %s\n", chan->name);
|
|
}
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
memset(p->call_forward, 0, sizeof(p->call_forward));
|
|
getforward = 0;
|
|
memset(exten, 0, sizeof(exten));
|
|
len = 0;
|
|
} else if (!strcmp(exten, ast_parking_ext()) &&
|
|
sub->next->owner && ast_bridged_channel(sub->next->owner)) {
|
|
/* This is a three way call, the main call being a real channel,
|
|
and we're parking the first call. */
|
|
ast_masq_park_call(ast_bridged_channel(sub->next->owner), chan, 0, NULL);
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Parking call to '%s'\n", chan->name);
|
|
}
|
|
break;
|
|
} else if (!ast_strlen_zero(p->lastcallerid) && !strcmp(exten, "*60")) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Blacklisting number %s\n", p->lastcallerid);
|
|
}
|
|
res = ast_db_put("blacklist", p->lastcallerid, "1");
|
|
if (!res) {
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
memset(exten, 0, sizeof(exten));
|
|
len = 0;
|
|
}
|
|
} else if (p->hidecallerid && !strcmp(exten, "*82")) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Enabling Caller*ID on %s\n", chan->name);
|
|
}
|
|
/* Enable Caller*ID if enabled */
|
|
p->hidecallerid = 0;
|
|
if (chan->cid.cid_num)
|
|
free(chan->cid.cid_num);
|
|
if (!ast_strlen_zero(p->cid_num))
|
|
chan->cid.cid_num = strdup(p->cid_num);
|
|
if (chan->cid.cid_name)
|
|
free(chan->cid.cid_name);
|
|
if (!ast_strlen_zero(p->cid_name))
|
|
chan->cid.cid_name = strdup(p->cid_name);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
len = 0;
|
|
memset(exten, 0, sizeof(exten));
|
|
timeout = firstdigittimeout;
|
|
} else if (!ast_canmatch_extension(chan, chan->context, exten, 1, chan->cid.cid_num) &&
|
|
((exten[0] != '*') || (strlen(exten) > 2))) {
|
|
if (option_debug)
|
|
ast_log(LOG_DEBUG, "Can't match %s from '%s' in context %s\n", exten, chan->cid.cid_num ? chan->cid.cid_num : "<Unknown Caller>", chan->context);
|
|
break;
|
|
}
|
|
if (!timeout)
|
|
timeout = gendigittimeout;
|
|
if (len && !ast_ignore_pattern(chan->context, exten))
|
|
/*tone_zone_play_tone(p->subs[index].zfd, -1);*/
|
|
ast_indicate(chan, -1);
|
|
}
|
|
#if 0
|
|
for (;;) {
|
|
res = ast_waitfordigit(chan, to);
|
|
if (!res) {
|
|
ast_log(LOG_DEBUG, "Timeout...\n");
|
|
break;
|
|
}
|
|
if (res < 0) {
|
|
ast_log(LOG_DEBUG, "Got hangup...\n");
|
|
ast_hangup(chan);
|
|
break;
|
|
}
|
|
exten[pos++] = res;
|
|
if (!ast_ignore_pattern(chan->context, exten))
|
|
ast_indicate(chan, -1);
|
|
if (ast_matchmore_extension(chan, chan->context, exten, 1, chan->callerid)) {
|
|
if (ast_exists_extension(chan, chan->context, exten, 1, chan->callerid))
|
|
to = 3000;
|
|
else
|
|
to = 8000;
|
|
} else
|
|
break;
|
|
}
|
|
if (ast_exists_extension(chan, chan->context, exten, 1, chan->callerid)) {
|
|
strncpy(chan->exten, exten, sizeof(chan->exten) - 1);
|
|
if (!p->rtp) {
|
|
start_rtp(p);
|
|
}
|
|
ast_setstate(chan, AST_STATE_RING);
|
|
chan->rings = 1;
|
|
if (ast_pbx_run(chan)) {
|
|
ast_log(LOG_WARNING, "Unable to launch PBX on %s\n", chan->name);
|
|
} else
|
|
return NULL;
|
|
}
|
|
#endif
|
|
ast_hangup(chan);
|
|
return NULL;
|
|
}
|
|
|
|
static int attempt_transfer(struct mgcp_endpoint *p)
|
|
{
|
|
/* *************************
|
|
* I hope this works.
|
|
* Copied out of chan_zap
|
|
* Cross your fingers
|
|
* *************************/
|
|
|
|
/* In order to transfer, we need at least one of the channels to
|
|
actually be in a call bridge. We can't conference two applications
|
|
together (but then, why would we want to?) */
|
|
if (ast_bridged_channel(p->sub->owner)) {
|
|
/* The three-way person we're about to transfer to could still be in MOH, so
|
|
stop if now if appropriate */
|
|
if (ast_bridged_channel(p->sub->next->owner))
|
|
ast_moh_stop(ast_bridged_channel(p->sub->next->owner));
|
|
if (p->sub->owner->_state == AST_STATE_RINGING) {
|
|
ast_indicate(ast_bridged_channel(p->sub->next->owner), AST_CONTROL_RINGING);
|
|
}
|
|
if (ast_channel_masquerade(p->sub->next->owner, ast_bridged_channel(p->sub->owner))) {
|
|
ast_log(LOG_WARNING, "Unable to masquerade %s as %s\n",
|
|
ast_bridged_channel(p->sub->owner)->name, p->sub->next->owner->name);
|
|
return -1;
|
|
}
|
|
/* Orphan the channel */
|
|
unalloc_sub(p->sub->next);
|
|
} else if (ast_bridged_channel(p->sub->next->owner)) {
|
|
if (p->sub->owner->_state == AST_STATE_RINGING) {
|
|
ast_indicate(ast_bridged_channel(p->sub->next->owner), AST_CONTROL_RINGING);
|
|
}
|
|
ast_moh_stop(ast_bridged_channel(p->sub->next->owner));
|
|
if (ast_channel_masquerade(p->sub->owner, ast_bridged_channel(p->sub->next->owner))) {
|
|
ast_log(LOG_WARNING, "Unable to masquerade %s as %s\n",
|
|
ast_bridged_channel(p->sub->next->owner)->name, p->sub->owner->name);
|
|
return -1;
|
|
}
|
|
/*swap_subs(p, SUB_THREEWAY, SUB_REAL);*/
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Swapping %d for %d on %s@%s\n", p->sub->id, p->sub->next->id, p->name, p->parent->name);
|
|
}
|
|
p->sub = p->sub->next;
|
|
unalloc_sub(p->sub->next);
|
|
/* Tell the caller not to hangup */
|
|
return 1;
|
|
} else {
|
|
ast_log(LOG_DEBUG, "Neither %s nor %s are in a bridge, nothing to transfer\n",
|
|
p->sub->owner->name, p->sub->next->owner->name);
|
|
p->sub->next->owner->_softhangup |= AST_SOFTHANGUP_DEV;
|
|
if (p->sub->next->owner) {
|
|
p->sub->next->alreadygone = 1;
|
|
mgcp_queue_hangup(p->sub->next);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void handle_hd_hf(struct mgcp_subchannel *sub, char *ev)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct ast_channel *c;
|
|
pthread_t t;
|
|
pthread_attr_t attr;
|
|
pthread_attr_init(&attr);
|
|
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
|
|
|
|
/* Off hook / answer */
|
|
if (sub->outgoing) {
|
|
/* Answered */
|
|
if (sub->owner) {
|
|
if (ast_bridged_channel(sub->owner)) {
|
|
ast_moh_stop(ast_bridged_channel(sub->owner));
|
|
}
|
|
sub->cxmode = MGCP_CX_SENDRECV;
|
|
if (!sub->rtp) {
|
|
start_rtp(sub);
|
|
} else {
|
|
transmit_modify_request(sub);
|
|
}
|
|
/*transmit_notify_request(sub, "aw");*/
|
|
transmit_notify_request(sub, "");
|
|
mgcp_queue_control(sub, AST_CONTROL_ANSWER);
|
|
}
|
|
} else {
|
|
/* Start switch */
|
|
/*sub->cxmode = MGCP_CX_SENDRECV;*/
|
|
if (!sub->owner) {
|
|
if (!sub->rtp) {
|
|
start_rtp(sub);
|
|
} else {
|
|
transmit_modify_request(sub);
|
|
}
|
|
if (p->immediate) {
|
|
/* The channel is immediately up. Start right away */
|
|
#ifdef DLINK_BUGGY_FIRMWARE
|
|
transmit_notify_request(sub, "rt");
|
|
#else
|
|
transmit_notify_request(sub, "G/rt");
|
|
#endif
|
|
c = mgcp_new(sub, AST_STATE_RING);
|
|
if (!c) {
|
|
ast_log(LOG_WARNING, "Unable to start PBX on channel %s@%s\n", p->name, p->parent->name);
|
|
transmit_notify_request(sub, "G/cg");
|
|
ast_hangup(c);
|
|
}
|
|
} else {
|
|
if (has_voicemail(p)) {
|
|
transmit_notify_request(sub, "L/sl");
|
|
} else {
|
|
transmit_notify_request(sub, "L/dl");
|
|
}
|
|
c = mgcp_new(sub, AST_STATE_DOWN);
|
|
if (c) {
|
|
if (ast_pthread_create(&t, &attr, mgcp_ss, c)) {
|
|
ast_log(LOG_WARNING, "Unable to create switch thread: %s\n", strerror(errno));
|
|
ast_hangup(c);
|
|
}
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to create channel for %s@%s\n", p->name, p->parent->name);
|
|
}
|
|
}
|
|
} else {
|
|
if (p->hookstate == MGCP_OFFHOOK) {
|
|
ast_log(LOG_WARNING, "Off hook, but already have owner on %s@%s\n", p->name, p->parent->name);
|
|
} else {
|
|
ast_log(LOG_WARNING, "On hook, but already have owner on %s@%s\n", p->name, p->parent->name);
|
|
ast_log(LOG_WARNING, "If we're onhook why are we here trying to handle a hd or hf?");
|
|
}
|
|
if (ast_bridged_channel(sub->owner)) {
|
|
ast_moh_stop(ast_bridged_channel(sub->owner));
|
|
}
|
|
sub->cxmode = MGCP_CX_SENDRECV;
|
|
if (!sub->rtp) {
|
|
start_rtp(sub);
|
|
} else {
|
|
transmit_modify_request(sub);
|
|
}
|
|
/*transmit_notify_request(sub, "aw");*/
|
|
transmit_notify_request(sub, "");
|
|
/*ast_queue_control(sub->owner, AST_CONTROL_ANSWER);*/
|
|
}
|
|
}
|
|
}
|
|
|
|
static int handle_request(struct mgcp_subchannel *sub, struct mgcp_request *req, struct sockaddr_in *sin)
|
|
{
|
|
char *ev, *s;
|
|
struct ast_frame f = { 0, };
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct mgcp_gateway *g = NULL;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
int res;
|
|
|
|
if (mgcpdebug) {
|
|
ast_verbose("Handling request '%s' on %s@%s\n", req->verb, p->name, p->parent->name);
|
|
}
|
|
/* Clear out potential response */
|
|
if (!strcasecmp(req->verb, "RSIP")) {
|
|
/* Test if this RSIP request is just a keepalive */
|
|
if(!strcasecmp( get_header(req, "RM"), "X-keepalive")) {
|
|
if (option_verbose > 2)
|
|
ast_verbose(VERBOSE_PREFIX_3 "Received keepalive request from %s@%s\n", p->name, p->parent->name);
|
|
transmit_response(sub, "200", req, "OK");
|
|
} else {
|
|
dump_queue(p->parent, p);
|
|
dump_cmd_queues(p, NULL);
|
|
|
|
if (option_verbose > 2 && (strcmp(p->name, p->parent->wcardep) != 0)) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Resetting interface %s@%s\n", p->name, p->parent->name);
|
|
}
|
|
/* JS: For RSIP on wildcard we reset all endpoints */
|
|
if (!strcmp(p->name, p->parent->wcardep)) {
|
|
/* Reset all endpoints */
|
|
struct mgcp_endpoint *tmp_ep;
|
|
|
|
g = p->parent;
|
|
tmp_ep = g->endpoints;
|
|
while (tmp_ep) {
|
|
/*if ((strcmp(tmp_ep->name, "*") != 0) && (strcmp(tmp_ep->name, "aaln/" "*") != 0)) {*/
|
|
if (strcmp(tmp_ep->name, g->wcardep) != 0) {
|
|
struct mgcp_subchannel *tmp_sub, *first_sub;
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Resetting interface %s@%s\n", tmp_ep->name, p->parent->name);
|
|
}
|
|
|
|
first_sub = tmp_ep->sub;
|
|
tmp_sub = tmp_ep->sub;
|
|
while (tmp_sub) {
|
|
mgcp_queue_hangup(tmp_sub);
|
|
tmp_sub = tmp_sub->next;
|
|
if (tmp_sub == first_sub)
|
|
break;
|
|
}
|
|
}
|
|
tmp_ep = tmp_ep->next;
|
|
}
|
|
} else if (sub->owner) {
|
|
mgcp_queue_hangup(sub);
|
|
}
|
|
transmit_response(sub, "200", req, "OK");
|
|
/* JS: We dont send NTFY or AUEP to wildcard ep */
|
|
if (strcmp(p->name, p->parent->wcardep) != 0) {
|
|
transmit_notify_request(sub, "");
|
|
/* SC: Audit endpoint.
|
|
Idea is to prevent lost lines due to race conditions
|
|
*/
|
|
transmit_audit_endpoint(p);
|
|
}
|
|
}
|
|
} else if (!strcasecmp(req->verb, "NTFY")) {
|
|
/* Acknowledge and be sure we keep looking for the same things */
|
|
transmit_response(sub, "200", req, "OK");
|
|
/* Notified of an event */
|
|
ev = get_header(req, "O");
|
|
s = strchr(ev, '/');
|
|
if (s) ev = s + 1;
|
|
ast_log(LOG_DEBUG, "Endpoint '%s@%s-%d' observed '%s'\n", p->name, p->parent->name, sub->id, ev);
|
|
/* Keep looking for events unless this was a hangup */
|
|
if (strcasecmp(ev, "hu") && strcasecmp(ev, "hd") && strcasecmp(ev, "ping")) {
|
|
transmit_notify_request(sub, p->curtone);
|
|
}
|
|
if (!strcasecmp(ev, "hd")) {
|
|
p->hookstate = MGCP_OFFHOOK;
|
|
sub->cxmode = MGCP_CX_SENDRECV;
|
|
handle_hd_hf(sub, ev);
|
|
} else if (!strcasecmp(ev, "hf")) {
|
|
/* We can assume we are offhook if we received a hookflash */
|
|
/* First let's just do call wait and ignore threeway */
|
|
/* We're currently in charge */
|
|
if (p->hookstate != MGCP_OFFHOOK) {
|
|
/* Cisco c7940 sends hf even if the phone is onhook */
|
|
/* Thanks to point on IRC for pointing this out */
|
|
return -1;
|
|
}
|
|
/* do not let * conference two down channels */
|
|
if (sub->owner && sub->owner->_state == AST_STATE_DOWN && !sub->next->owner)
|
|
return -1;
|
|
|
|
if (p->callwaiting || p->transfer || p->threewaycalling) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Swapping %d for %d on %s@%s\n", p->sub->id, p->sub->next->id, p->name, p->parent->name);
|
|
}
|
|
p->sub = p->sub->next;
|
|
|
|
/* transfer control to our next subchannel */
|
|
if (!sub->next->owner) {
|
|
/* plave the first call on hold and start up a new call */
|
|
sub->cxmode = MGCP_CX_MUTE;
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Muting %d on %s@%s\n", sub->id, p->name, p->parent->name);
|
|
}
|
|
transmit_modify_request(sub);
|
|
if (sub->owner && ast_bridged_channel(sub->owner)) {
|
|
ast_moh_start(ast_bridged_channel(sub->owner), NULL);
|
|
}
|
|
sub->next->cxmode = MGCP_CX_RECVONLY;
|
|
handle_hd_hf(sub->next, ev);
|
|
} else if (sub->owner && sub->next->owner) {
|
|
/* We've got two active calls lets decide whether or not to conference or just flip flop */
|
|
if ((!sub->outgoing) && (!sub->next->outgoing)) {
|
|
/* We made both calls lets conferenct */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Conferencing %d and %d on %s@%s\n",
|
|
sub->id, sub->next->id, p->name, p->parent->name);
|
|
}
|
|
sub->cxmode = MGCP_CX_CONF;
|
|
sub->next->cxmode = MGCP_CX_CONF;
|
|
if (ast_bridged_channel(sub->next->owner))
|
|
ast_moh_stop(ast_bridged_channel(sub->next->owner));
|
|
transmit_modify_request(sub);
|
|
transmit_modify_request(sub->next);
|
|
} else {
|
|
/* Let's flipflop between calls */
|
|
/* XXX Need to check for state up ??? */
|
|
/* XXX Need a way to indicate the current call, or maybe the call that's waiting */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "We didn't make one of the calls FLIPFLOP %d and %d on %s@%s\n",
|
|
sub->id, sub->next->id, p->name, p->parent->name);
|
|
}
|
|
sub->cxmode = MGCP_CX_MUTE;
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Muting %d on %s@%s\n", sub->id, p->name, p->parent->name);
|
|
}
|
|
transmit_modify_request(sub);
|
|
if (ast_bridged_channel(sub->owner))
|
|
ast_moh_start(ast_bridged_channel(sub->owner), NULL);
|
|
|
|
if (ast_bridged_channel(sub->next->owner))
|
|
ast_moh_stop(ast_bridged_channel(sub->next->owner));
|
|
|
|
handle_hd_hf(sub->next, ev);
|
|
#if 0
|
|
if (sub->next->owner && (sub->next->owner->_state != AST_STATE_UP)) {
|
|
handle_hd_hf(sub->next, ev);
|
|
} else {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Unmuting %d on %s@%s\n", sub->next->id, p->name, p->parent->name);
|
|
sub->next->cxmode = MGCP_CX_SENDRECV;
|
|
transmit_modify_request(sub->next);
|
|
}
|
|
#endif
|
|
}
|
|
} else {
|
|
/* We've most likely lost one of our calls find an active call and bring it up */
|
|
if (sub->owner) {
|
|
p->sub = sub;
|
|
} else if (sub->next->owner) {
|
|
p->sub = sub->next;
|
|
} else {
|
|
/* We seem to have lost both our calls */
|
|
/* XXX - What do we do now? */
|
|
return -1;
|
|
}
|
|
if (ast_bridged_channel(p->sub->owner)) {
|
|
ast_moh_stop(ast_bridged_channel(p->sub->owner));
|
|
}
|
|
p->sub->cxmode = MGCP_CX_SENDRECV;
|
|
transmit_modify_request(p->sub);
|
|
}
|
|
} else {
|
|
ast_log(LOG_WARNING, "Callwaiting, call transfer or threeway calling not enabled on endpoint %s@%s\n",
|
|
p->name, p->parent->name);
|
|
}
|
|
/*ast_moh_stop(sub->owner->bridge);*/
|
|
} else if (!strcasecmp(ev, "hu")) {
|
|
p->hookstate = MGCP_ONHOOK;
|
|
sub->cxmode = MGCP_CX_RECVONLY;
|
|
ast_log(LOG_DEBUG, "MGCP %s@%s Went on hook\n", p->name, p->parent->name);
|
|
/* JS: Do we need to send MDCX before a DLCX ?
|
|
if (sub->rtp) {
|
|
transmit_modify_request(sub);
|
|
}
|
|
*/
|
|
if (p->transfer && (sub->owner && sub->next->owner) && ((!sub->outgoing) || (!sub->next->outgoing))) {
|
|
/* We're allowed to transfer, we have two avtive calls and */
|
|
/* we made at least one of the calls. Let's try and transfer */
|
|
ast_mutex_lock(&p->sub->next->lock);
|
|
res = attempt_transfer(p);
|
|
if (res < 0) {
|
|
if (p->sub->next->owner) {
|
|
sub->next->alreadygone = 1;
|
|
mgcp_queue_hangup(sub->next);
|
|
}
|
|
} else if (res) {
|
|
ast_log(LOG_WARNING, "Transfer attempt failed\n");
|
|
ast_mutex_unlock(&p->sub->next->lock);
|
|
return -1;
|
|
}
|
|
ast_mutex_unlock(&p->sub->next->lock);
|
|
} else {
|
|
/* Hangup the current call */
|
|
/* If there is another active call, mgcp_hangup will ring the phone with the other call */
|
|
if (sub->owner) {
|
|
sub->alreadygone = 1;
|
|
mgcp_queue_hangup(sub);
|
|
} else {
|
|
/* SC: verbose level check */
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP handle_request(%s@%s-%d) ast_channel already destroyed, resending DLCX.\n",
|
|
p->name, p->parent->name, sub->id);
|
|
}
|
|
/* Instruct the other side to remove the connection since it apparently *
|
|
* still thinks the channel is active. *
|
|
* For Cisco IAD2421 /BAK/ */
|
|
transmit_connection_del(sub);
|
|
}
|
|
}
|
|
if ((p->hookstate == MGCP_ONHOOK) && (!sub->rtp) && (!sub->next->rtp)) {
|
|
p->hidecallerid = 0;
|
|
if (p->hascallwaiting && !p->callwaiting) {
|
|
if (option_verbose > 2)
|
|
ast_verbose(VERBOSE_PREFIX_3 "Enabling call waiting on MGCP/%s@%s-%d\n", p->name, p->parent->name, sub->id);
|
|
p->callwaiting = -1;
|
|
}
|
|
if (has_voicemail(p)) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP handle_request(%s@%s) set vmwi(+)\n", p->name, p->parent->name);
|
|
}
|
|
transmit_notify_request(sub, "L/vmwi(+)");
|
|
} else {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP handle_request(%s@%s) set vmwi(-)\n", p->name, p->parent->name);
|
|
}
|
|
transmit_notify_request(sub, "L/vmwi(-)");
|
|
}
|
|
}
|
|
} else if ((strlen(ev) == 1) &&
|
|
(((ev[0] >= '0') && (ev[0] <= '9')) ||
|
|
((ev[0] >= 'A') && (ev[0] <= 'D')) ||
|
|
(ev[0] == '*') || (ev[0] == '#'))) {
|
|
f.frametype = AST_FRAME_DTMF;
|
|
f.subclass = ev[0];
|
|
f.src = "mgcp";
|
|
if (sub->owner) {
|
|
/* XXX MUST queue this frame to all subs in threeway call if threeway call is active */
|
|
mgcp_queue_frame(sub, &f);
|
|
ast_mutex_lock(&sub->next->lock);
|
|
if (sub->next->owner) {
|
|
mgcp_queue_frame(sub->next, &f);
|
|
}
|
|
ast_mutex_unlock(&sub->next->lock);
|
|
}
|
|
if (strstr(p->curtone, "wt") && (ev[0] == 'A')) {
|
|
memset(p->curtone, 0, sizeof(p->curtone));
|
|
}
|
|
} else if (!strcasecmp(ev, "T")) {
|
|
/* Digit timeout -- unimportant */
|
|
} else if (!strcasecmp(ev, "ping")) {
|
|
/* ping -- unimportant */
|
|
} else {
|
|
ast_log(LOG_NOTICE, "Received unknown event '%s' from %s@%s\n", ev, p->name, p->parent->name);
|
|
}
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unknown verb '%s' received from %s\n", req->verb, ast_inet_ntoa(iabuf, sizeof(iabuf), sin->sin_addr));
|
|
transmit_response(sub, "510", req, "Unknown verb");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int find_and_retrans(struct mgcp_subchannel *sub, struct mgcp_request *req)
|
|
{
|
|
int seqno=0;
|
|
time_t now;
|
|
struct mgcp_response *prev = NULL, *cur, *next, *answer=NULL;
|
|
time(&now);
|
|
if (sscanf(req->identifier, "%d", &seqno) != 1)
|
|
seqno = 0;
|
|
cur = sub->parent->parent->responses;
|
|
while(cur) {
|
|
next = cur->next;
|
|
if (now - cur->whensent > RESPONSE_TIMEOUT) {
|
|
/* Delete this entry */
|
|
if (prev)
|
|
prev->next = next;
|
|
else
|
|
sub->parent->parent->responses = next;
|
|
free(cur);
|
|
} else {
|
|
if (seqno == cur->seqno)
|
|
answer = cur;
|
|
prev = cur;
|
|
}
|
|
cur = next;
|
|
}
|
|
if (answer) {
|
|
resend_response(sub, answer);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mgcpsock_read(int *id, int fd, short events, void *ignore)
|
|
{
|
|
struct mgcp_request req;
|
|
struct sockaddr_in sin;
|
|
struct mgcp_subchannel *sub;
|
|
int res;
|
|
socklen_t len;
|
|
int result;
|
|
int ident;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
len = sizeof(sin);
|
|
memset(&req, 0, sizeof(req));
|
|
res = recvfrom(mgcpsock, req.data, sizeof(req.data) - 1, 0, (struct sockaddr *)&sin, &len);
|
|
if (res < 0) {
|
|
if (errno != ECONNREFUSED)
|
|
ast_log(LOG_WARNING, "Recv error: %s\n", strerror(errno));
|
|
return 1;
|
|
}
|
|
req.data[res] = '\0';
|
|
req.len = res;
|
|
if (mgcpdebug) {
|
|
ast_verbose("MGCP read: \n%s\nfrom %s:%d\n", req.data, ast_inet_ntoa(iabuf, sizeof(iabuf), sin.sin_addr), ntohs(sin.sin_port));
|
|
}
|
|
parse(&req);
|
|
if (req.headers < 1) {
|
|
/* Must have at least one header */
|
|
return 1;
|
|
}
|
|
if (!req.identifier || ast_strlen_zero(req.identifier)) {
|
|
ast_log(LOG_NOTICE, "Message from %s missing identifier\n", ast_inet_ntoa(iabuf, sizeof(iabuf), sin.sin_addr));
|
|
return 1;
|
|
}
|
|
|
|
if (sscanf(req.verb, "%d", &result) && sscanf(req.identifier, "%d", &ident)) {
|
|
/* Try to find who this message is for, if it's important */
|
|
sub = find_subchannel_and_lock(NULL, ident, &sin);
|
|
if (sub) {
|
|
struct mgcp_gateway *gw = sub->parent->parent;
|
|
struct mgcp_message *cur, *prev;
|
|
|
|
ast_mutex_unlock(&sub->lock);
|
|
ast_mutex_lock(&gw->msgs_lock);
|
|
for (prev = NULL, cur = gw->msgs; cur; prev = cur, cur = cur->next) {
|
|
if (cur->seqno == ident) {
|
|
ast_log(LOG_DEBUG, "Got response back on transaction %d\n", ident);
|
|
if (prev)
|
|
prev->next = cur->next;
|
|
else
|
|
gw->msgs = cur->next;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* stop retrans timer if the queue is empty */
|
|
if (!gw->msgs && (gw->retransid != -1)) {
|
|
ast_sched_del(sched, gw->retransid);
|
|
gw->retransid = -1;
|
|
}
|
|
|
|
ast_mutex_unlock(&gw->msgs_lock);
|
|
if (cur) {
|
|
handle_response(cur->owner_ep, cur->owner_sub, result, ident, &req);
|
|
free(cur);
|
|
return 1;
|
|
}
|
|
|
|
ast_log(LOG_NOTICE, "Got response back on [%s] for transaction %d we aren't sending?\n",
|
|
gw->name, ident);
|
|
}
|
|
} else {
|
|
if (!req.endpoint || ast_strlen_zero(req.endpoint) ||
|
|
!req.version || ast_strlen_zero(req.version) ||
|
|
!req.verb || ast_strlen_zero(req.verb)) {
|
|
ast_log(LOG_NOTICE, "Message must have a verb, an idenitifier, version, and endpoint\n");
|
|
return 1;
|
|
}
|
|
/* Process request, with iflock held */
|
|
sub = find_subchannel_and_lock(req.endpoint, 0, &sin);
|
|
if (sub) {
|
|
/* look first to find a matching response in the queue */
|
|
if (!find_and_retrans(sub, &req))
|
|
/* pass the request off to the currently mastering subchannel */
|
|
handle_request(sub, &req, &sin);
|
|
ast_mutex_unlock(&sub->lock);
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int *mgcpsock_read_id = NULL;
|
|
|
|
static void *do_monitor(void *data)
|
|
{
|
|
int res;
|
|
int reloading;
|
|
/*struct mgcp_gateway *g;*/
|
|
/*struct mgcp_endpoint *e;*/
|
|
/*time_t thispass = 0, lastpass = 0;*/
|
|
|
|
/* Add an I/O event to our UDP socket */
|
|
if (mgcpsock > -1)
|
|
mgcpsock_read_id = ast_io_add(io, mgcpsock, mgcpsock_read, AST_IO_IN, NULL);
|
|
|
|
/* This thread monitors all the frame relay interfaces which are not yet in use
|
|
(and thus do not have a separate thread) indefinitely */
|
|
/* From here on out, we die whenever asked */
|
|
for(;;) {
|
|
/* Check for a reload request */
|
|
ast_mutex_lock(&mgcp_reload_lock);
|
|
reloading = mgcp_reloading;
|
|
mgcp_reloading = 0;
|
|
ast_mutex_unlock(&mgcp_reload_lock);
|
|
if (reloading) {
|
|
if (option_verbose > 0)
|
|
ast_verbose(VERBOSE_PREFIX_1 "Reloading MGCP\n");
|
|
mgcp_do_reload();
|
|
/* Add an I/O event to our UDP socket */
|
|
if (mgcpsock > -1)
|
|
mgcpsock_read_id = ast_io_add(io, mgcpsock, mgcpsock_read, AST_IO_IN, NULL);
|
|
}
|
|
|
|
/* Check for interfaces needing to be killed */
|
|
/* Don't let anybody kill us right away. Nobody should lock the interface list
|
|
and wait for the monitor list, but the other way around is okay. */
|
|
ast_mutex_lock(&monlock);
|
|
/* Lock the network interface */
|
|
ast_mutex_lock(&netlock);
|
|
|
|
#if 0
|
|
/* XXX THIS IS COMPLETELY HOSED */
|
|
/* The gateway goes into a state of panic */
|
|
/* If the vmwi indicator is sent while it is reseting interfaces */
|
|
lastpass = thispass;
|
|
thispass = time(NULL);
|
|
g = gateways;
|
|
while(g) {
|
|
if (thispass != lastpass) {
|
|
e = g->endpoints;
|
|
while(e) {
|
|
if (e->type == TYPE_LINE) {
|
|
res = has_voicemail(e);
|
|
if ((e->msgstate != res) && (e->hookstate == MGCP_ONHOOK) && (!e->rtp)){
|
|
if (res) {
|
|
transmit_notify_request(e, "L/vmwi(+)");
|
|
} else {
|
|
transmit_notify_request(e, "L/vmwi(-)");
|
|
}
|
|
e->msgstate = res;
|
|
e->onhooktime = thispass;
|
|
}
|
|
}
|
|
e = e->next;
|
|
}
|
|
}
|
|
g = g->next;
|
|
}
|
|
#endif
|
|
/* Okay, now that we know what to do, release the network lock */
|
|
ast_mutex_unlock(&netlock);
|
|
/* And from now on, we're okay to be killed, so release the monitor lock as well */
|
|
ast_mutex_unlock(&monlock);
|
|
pthread_testcancel();
|
|
/* Wait for sched or io */
|
|
res = ast_sched_wait(sched);
|
|
/* SC: copied from chan_sip.c */
|
|
if ((res < 0) || (res > 1000))
|
|
res = 1000;
|
|
res = ast_io_wait(io, res);
|
|
ast_mutex_lock(&monlock);
|
|
if (res >= 0)
|
|
ast_sched_runq(sched);
|
|
ast_mutex_unlock(&monlock);
|
|
}
|
|
/* Never reached */
|
|
return NULL;
|
|
}
|
|
|
|
static int restart_monitor(void)
|
|
{
|
|
pthread_attr_t attr;
|
|
pthread_attr_init(&attr);
|
|
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
|
|
|
|
/* 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 != AST_PTHREADT_NULL) {
|
|
/* Wake up the thread */
|
|
pthread_kill(monitor_thread, SIGURG);
|
|
} else {
|
|
/* Start a new monitor */
|
|
if (ast_pthread_create(&monitor_thread, &attr, do_monitor, NULL) < 0) {
|
|
ast_mutex_unlock(&monlock);
|
|
ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
|
|
return -1;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&monlock);
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_channel *mgcp_request(const char *type, int format, void *data, int *cause)
|
|
{
|
|
int oldformat;
|
|
struct mgcp_subchannel *sub;
|
|
struct ast_channel *tmpc = NULL;
|
|
char tmp[256];
|
|
char *dest = 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);
|
|
if (ast_strlen_zero(tmp)) {
|
|
ast_log(LOG_NOTICE, "MGCP Channels require an endpoint\n");
|
|
return NULL;
|
|
}
|
|
sub = find_subchannel_and_lock(tmp, 0, NULL);
|
|
if (!sub) {
|
|
ast_log(LOG_WARNING, "Unable to find MGCP endpoint '%s'\n", tmp);
|
|
*cause = AST_CAUSE_UNREGISTERED;
|
|
return NULL;
|
|
}
|
|
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP mgcp_request(%s)\n", tmp);
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP cw: %d, dnd: %d, so: %d, sno: %d\n",
|
|
sub->parent->callwaiting, sub->parent->dnd, sub->owner ? 1 : 0, sub->next->owner ? 1: 0);
|
|
}
|
|
/* Must be busy */
|
|
if (((sub->parent->callwaiting) && ((sub->owner) && (sub->next->owner))) ||
|
|
((!sub->parent->callwaiting) && (sub->owner)) ||
|
|
(sub->parent->dnd && (ast_strlen_zero(sub->parent->call_forward)))) {
|
|
if (sub->parent->hookstate == MGCP_ONHOOK) {
|
|
if (has_voicemail(sub->parent)) {
|
|
transmit_notify_request(sub,"L/vmwi(+)");
|
|
} else {
|
|
transmit_notify_request(sub,"L/vmwi(-)");
|
|
}
|
|
}
|
|
*cause = AST_CAUSE_BUSY;
|
|
ast_mutex_unlock(&sub->lock);
|
|
return NULL;
|
|
}
|
|
tmpc = mgcp_new(sub->owner ? sub->next : sub, AST_STATE_DOWN);
|
|
ast_mutex_unlock(&sub->lock);
|
|
if (!tmpc)
|
|
ast_log(LOG_WARNING, "Unable to make channel for '%s'\n", tmp);
|
|
restart_monitor();
|
|
return tmpc;
|
|
}
|
|
|
|
/* SC: modified for reload support */
|
|
static struct mgcp_gateway *build_gateway(char *cat, struct ast_variable *v)
|
|
{
|
|
struct mgcp_gateway *gw;
|
|
struct mgcp_endpoint *e;
|
|
struct mgcp_subchannel *sub;
|
|
/*char txident[80];*/
|
|
int i=0, y=0;
|
|
int gw_reload = 0;
|
|
int ep_reload = 0;
|
|
canreinvite = CANREINVITE;
|
|
|
|
/* SC: locate existing gateway */
|
|
gw = gateways;
|
|
while (gw) {
|
|
if (!strcasecmp(cat, gw->name)) {
|
|
/* gateway already exists */
|
|
gw->delme = 0;
|
|
gw_reload = 1;
|
|
break;
|
|
}
|
|
gw = gw->next;
|
|
}
|
|
|
|
if (!gw)
|
|
gw = malloc(sizeof(struct mgcp_gateway));
|
|
|
|
if (gw) {
|
|
if (!gw_reload) {
|
|
memset(gw, 0, sizeof(struct mgcp_gateway));
|
|
gw->expire = -1;
|
|
gw->retransid = -1; /* SC */
|
|
ast_mutex_init(&gw->msgs_lock);
|
|
strncpy(gw->name, cat, sizeof(gw->name) - 1);
|
|
/* SC: check if the name is numeric ip */
|
|
if ((strchr(gw->name, '.')) && inet_addr(gw->name) != INADDR_NONE)
|
|
gw->isnamedottedip = 1;
|
|
}
|
|
while(v) {
|
|
if (!strcasecmp(v->name, "host")) {
|
|
if (!strcasecmp(v->value, "dynamic")) {
|
|
/* They'll register with us */
|
|
gw->dynamic = 1;
|
|
memset(&gw->addr.sin_addr, 0, 4);
|
|
if (gw->addr.sin_port) {
|
|
/* If we've already got a port, make it the default rather than absolute */
|
|
gw->defaddr.sin_port = gw->addr.sin_port;
|
|
gw->addr.sin_port = 0;
|
|
}
|
|
} else {
|
|
/* Non-dynamic. Make sure we become that way if we're not */
|
|
if (gw->expire > -1)
|
|
ast_sched_del(sched, gw->expire);
|
|
gw->expire = -1;
|
|
gw->dynamic = 0;
|
|
if (ast_get_ip(&gw->addr, v->value)) {
|
|
if (!gw_reload) {
|
|
ast_mutex_destroy(&gw->msgs_lock);
|
|
free(gw);
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
} else if (!strcasecmp(v->name, "defaultip")) {
|
|
if (ast_get_ip(&gw->defaddr, v->value)) {
|
|
if (!gw_reload) {
|
|
ast_mutex_destroy(&gw->msgs_lock);
|
|
free(gw);
|
|
}
|
|
return NULL;
|
|
}
|
|
} else if (!strcasecmp(v->name, "permit") ||
|
|
!strcasecmp(v->name, "deny")) {
|
|
gw->ha = ast_append_ha(v->name, v->value, gw->ha);
|
|
} else if (!strcasecmp(v->name, "port")) {
|
|
gw->addr.sin_port = htons(atoi(v->value));
|
|
} else if (!strcasecmp(v->name, "context")) {
|
|
strncpy(context, v->value, sizeof(context) - 1);
|
|
} else if (!strcasecmp(v->name, "dtmfmode")) {
|
|
if (!strcasecmp(v->value, "inband"))
|
|
dtmfmode = MGCP_DTMF_INBAND;
|
|
else if (!strcasecmp(v->value, "rfc2833"))
|
|
dtmfmode = MGCP_DTMF_RFC2833;
|
|
else if (!strcasecmp(v->value, "hybrid"))
|
|
dtmfmode = MGCP_DTMF_HYBRID;
|
|
else if (!strcasecmp(v->value, "none"))
|
|
dtmfmode = 0;
|
|
else
|
|
ast_log(LOG_WARNING, "'%s' is not a valid DTMF mode at line %d\n", v->value, v->lineno);
|
|
} else if (!strcasecmp(v->name, "nat")) {
|
|
nat = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "callerid")) {
|
|
if (!strcasecmp(v->value, "asreceived")) {
|
|
cid_num[0] = '\0';
|
|
cid_name[0] = '\0';
|
|
} else {
|
|
ast_callerid_split(v->value, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
|
|
}
|
|
} else if (!strcasecmp(v->name, "language")) {
|
|
strncpy(language, v->value, sizeof(language)-1);
|
|
} else if (!strcasecmp(v->name, "accountcode")) {
|
|
strncpy(accountcode, v->value, sizeof(accountcode)-1);
|
|
} else if (!strcasecmp(v->name, "amaflags")) {
|
|
y = ast_cdr_amaflags2int(v->value);
|
|
if (y < 0) {
|
|
ast_log(LOG_WARNING, "Invalid AMA flags: %s at line %d\n", v->value, v->lineno);
|
|
} else {
|
|
amaflags = y;
|
|
}
|
|
} else if (!strcasecmp(v->name, "musiconhold")) {
|
|
strncpy(musicclass, v->value, sizeof(musicclass)-1);
|
|
} else if (!strcasecmp(v->name, "callgroup")) {
|
|
cur_callergroup = ast_get_group(v->value);
|
|
} else if (!strcasecmp(v->name, "pickupgroup")) {
|
|
cur_pickupgroup = ast_get_group(v->value);
|
|
} else if (!strcasecmp(v->name, "immediate")) {
|
|
immediate = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "cancallforward")) {
|
|
cancallforward = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "singlepath")) {
|
|
singlepath = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "canreinvite")) {
|
|
canreinvite = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "mailbox")) {
|
|
strncpy(mailbox, v->value, sizeof(mailbox) -1);
|
|
} else if (!strcasecmp(v->name, "adsi")) {
|
|
adsi = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "callreturn")) {
|
|
callreturn = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "callwaiting")) {
|
|
callwaiting = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "slowsequence")) {
|
|
slowsequence = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "transfer")) {
|
|
transfer = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "threewaycalling")) {
|
|
threewaycalling = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "wcardep")) {
|
|
/* SC: locate existing endpoint */
|
|
e = gw->endpoints;
|
|
while (e) {
|
|
if (!strcasecmp(v->value, e->name)) {
|
|
/* endpoint already exists */
|
|
e->delme = 0;
|
|
ep_reload = 1;
|
|
break;
|
|
}
|
|
e = e->next;
|
|
}
|
|
|
|
if (!e) {
|
|
/* Allocate wildcard endpoint */
|
|
e = malloc(sizeof(struct mgcp_endpoint));
|
|
ep_reload = 0;
|
|
}
|
|
|
|
if (e) {
|
|
if (!ep_reload) {
|
|
memset(e, 0, sizeof(struct mgcp_endpoint));
|
|
ast_mutex_init(&e->lock);
|
|
ast_mutex_init(&e->rqnt_queue_lock);
|
|
ast_mutex_init(&e->cmd_queue_lock);
|
|
strncpy(e->name, v->value, sizeof(e->name) - 1);
|
|
e->needaudit = 1;
|
|
}
|
|
strncpy(gw->wcardep, v->value, sizeof(gw->wcardep) - 1);
|
|
/*strncpy(e->name, "aaln/" "*", sizeof(e->name) - 1);*/
|
|
/* XXX Should we really check for uniqueness?? XXX */
|
|
strncpy(e->accountcode, accountcode, sizeof(e->accountcode) - 1);
|
|
strncpy(e->context, context, sizeof(e->context) - 1);
|
|
strncpy(e->cid_num, cid_num, sizeof(e->cid_num) - 1);
|
|
strncpy(e->cid_name, cid_name, sizeof(e->cid_name) - 1);
|
|
strncpy(e->language, language, sizeof(e->language) - 1);
|
|
strncpy(e->musicclass, musicclass, sizeof(e->musicclass) - 1);
|
|
strncpy(e->mailbox, mailbox, sizeof(e->mailbox) - 1);
|
|
snprintf(e->rqnt_ident, sizeof(e->rqnt_ident), "%08x", rand());
|
|
e->msgstate = -1;
|
|
e->amaflags = amaflags;
|
|
e->capability = capability;
|
|
e->parent = gw;
|
|
e->dtmfmode = dtmfmode;
|
|
if (!ep_reload && e->sub && e->sub->rtp)
|
|
e->dtmfmode |= MGCP_DTMF_INBAND;
|
|
e->adsi = adsi;
|
|
e->type = TYPE_LINE;
|
|
e->immediate = immediate;
|
|
e->callgroup=cur_callergroup;
|
|
e->pickupgroup=cur_pickupgroup;
|
|
e->callreturn = callreturn;
|
|
e->cancallforward = cancallforward;
|
|
e->singlepath = singlepath;
|
|
e->canreinvite = canreinvite;
|
|
e->callwaiting = callwaiting;
|
|
e->hascallwaiting = callwaiting;
|
|
e->slowsequence = slowsequence;
|
|
e->transfer = transfer;
|
|
e->threewaycalling = threewaycalling;
|
|
e->onhooktime = time(NULL);
|
|
/* ASSUME we're onhook */
|
|
e->hookstate = MGCP_ONHOOK;
|
|
if (!ep_reload) {
|
|
/*snprintf(txident, sizeof(txident), "%08x", rand());*/
|
|
for (i = 0; i < MAX_SUBS; i++) {
|
|
sub = malloc(sizeof(struct mgcp_subchannel));
|
|
if (sub) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Allocating subchannel '%d' on %s@%s\n", i, e->name, gw->name);
|
|
memset(sub, 0, sizeof(struct mgcp_subchannel));
|
|
ast_mutex_init(&sub->lock);
|
|
ast_mutex_init(&sub->cx_queue_lock);
|
|
sub->parent = e;
|
|
sub->id = i;
|
|
snprintf(sub->txident, sizeof(sub->txident), "%08x", rand());
|
|
/*stnrcpy(sub->txident, txident, sizeof(sub->txident) - 1);*/
|
|
sub->cxmode = MGCP_CX_INACTIVE;
|
|
sub->nat = nat;
|
|
sub->next = e->sub;
|
|
e->sub = sub;
|
|
} else {
|
|
/* XXX Should find a way to clean up our memory */
|
|
ast_log(LOG_WARNING, "Out of memory allocating subchannel");
|
|
return NULL;
|
|
}
|
|
}
|
|
/* Make out subs a circular linked list so we can always sping through the whole bunch */
|
|
sub = e->sub;
|
|
/* find the end of the list */
|
|
while(sub->next){
|
|
sub = sub->next;
|
|
}
|
|
/* set the last sub->next to the first sub */
|
|
sub->next = e->sub;
|
|
|
|
e->next = gw->endpoints;
|
|
gw->endpoints = e;
|
|
}
|
|
}
|
|
} else if (!strcasecmp(v->name, "trunk") ||
|
|
!strcasecmp(v->name, "line")) {
|
|
|
|
/* SC: locate existing endpoint */
|
|
e = gw->endpoints;
|
|
while (e) {
|
|
if (!strcasecmp(v->value, e->name)) {
|
|
/* endpoint already exists */
|
|
e->delme = 0;
|
|
ep_reload = 1;
|
|
break;
|
|
}
|
|
e = e->next;
|
|
}
|
|
|
|
if (!e) {
|
|
e = malloc(sizeof(struct mgcp_endpoint));
|
|
ep_reload = 0;
|
|
}
|
|
|
|
if (e) {
|
|
if (!ep_reload) {
|
|
memset(e, 0, sizeof(struct mgcp_endpoint));
|
|
ast_mutex_init(&e->lock);
|
|
ast_mutex_init(&e->rqnt_queue_lock);
|
|
ast_mutex_init(&e->cmd_queue_lock);
|
|
strncpy(e->name, v->value, sizeof(e->name) - 1);
|
|
e->needaudit = 1;
|
|
}
|
|
/* XXX Should we really check for uniqueness?? XXX */
|
|
strncpy(e->accountcode, accountcode, sizeof(e->accountcode) - 1);
|
|
strncpy(e->context, context, sizeof(e->context) - 1);
|
|
strncpy(e->cid_num, cid_num, sizeof(e->cid_num) - 1);
|
|
strncpy(e->cid_name, cid_name, sizeof(e->cid_name) - 1);
|
|
strncpy(e->language, language, sizeof(e->language) - 1);
|
|
strncpy(e->musicclass, musicclass, sizeof(e->musicclass) - 1);
|
|
strncpy(e->mailbox, mailbox, sizeof(e->mailbox)-1);
|
|
if (!ast_strlen_zero(mailbox)) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Setting mailbox '%s' on %s@%s\n", mailbox, gw->name, e->name);
|
|
}
|
|
if (!ep_reload) {
|
|
/* XXX SC: potential issue due to reload */
|
|
e->msgstate = -1;
|
|
e->parent = gw;
|
|
}
|
|
e->amaflags = amaflags;
|
|
e->capability = capability;
|
|
e->dtmfmode = dtmfmode;
|
|
e->adsi = adsi;
|
|
if (!strcasecmp(v->name, "trunk"))
|
|
e->type = TYPE_TRUNK;
|
|
else
|
|
e->type = TYPE_LINE;
|
|
|
|
e->immediate = immediate;
|
|
e->callgroup=cur_callergroup;
|
|
e->pickupgroup=cur_pickupgroup;
|
|
e->callreturn = callreturn;
|
|
e->cancallforward = cancallforward;
|
|
e->canreinvite = canreinvite;
|
|
e->singlepath = singlepath;
|
|
e->callwaiting = callwaiting;
|
|
e->hascallwaiting = callwaiting;
|
|
e->slowsequence = slowsequence;
|
|
e->transfer = transfer;
|
|
e->threewaycalling = threewaycalling;
|
|
if (!ep_reload) {
|
|
e->onhooktime = time(NULL);
|
|
/* ASSUME we're onhook */
|
|
e->hookstate = MGCP_ONHOOK;
|
|
snprintf(e->rqnt_ident, sizeof(e->rqnt_ident), "%08x", rand());
|
|
}
|
|
|
|
for (i = 0, sub = NULL; i < MAX_SUBS; i++) {
|
|
if (!ep_reload) {
|
|
sub = malloc(sizeof(struct mgcp_subchannel));
|
|
} else {
|
|
if (!sub)
|
|
sub = e->sub;
|
|
else
|
|
sub = sub->next;
|
|
}
|
|
|
|
if (sub) {
|
|
if (!ep_reload) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Allocating subchannel '%d' on %s@%s\n", i, e->name, gw->name);
|
|
memset(sub, 0, sizeof(struct mgcp_subchannel));
|
|
ast_mutex_init(&sub->lock);
|
|
ast_mutex_init(&sub->cx_queue_lock);
|
|
strncpy(sub->magic, MGCP_SUBCHANNEL_MAGIC, sizeof(sub->magic) - 1);
|
|
sub->parent = e;
|
|
sub->id = i;
|
|
snprintf(sub->txident, sizeof(sub->txident), "%08x", rand());
|
|
sub->cxmode = MGCP_CX_INACTIVE;
|
|
sub->next = e->sub;
|
|
e->sub = sub;
|
|
}
|
|
sub->nat = nat;
|
|
} else {
|
|
/* XXX Should find a way to clean up our memory */
|
|
ast_log(LOG_WARNING, "Out of memory allocating subchannel");
|
|
return NULL;
|
|
}
|
|
}
|
|
if (!ep_reload) {
|
|
/* Make out subs a circular linked list so we can always sping through the whole bunch */
|
|
sub = e->sub;
|
|
/* find the end of the list */
|
|
while (sub->next) {
|
|
sub = sub->next;
|
|
}
|
|
/* set the last sub->next to the first sub */
|
|
sub->next = e->sub;
|
|
|
|
e->next = gw->endpoints;
|
|
gw->endpoints = e;
|
|
}
|
|
}
|
|
} else
|
|
ast_log(LOG_WARNING, "Don't know keyword '%s' at line %d\n", v->name, v->lineno);
|
|
v = v->next;
|
|
}
|
|
}
|
|
if (!ntohl(gw->addr.sin_addr.s_addr) && !gw->dynamic) {
|
|
ast_log(LOG_WARNING, "Gateway '%s' lacks IP address and isn't dynamic\n", gw->name);
|
|
if (!gw_reload) {
|
|
ast_mutex_destroy(&gw->msgs_lock);
|
|
free(gw);
|
|
}
|
|
return NULL;
|
|
}
|
|
gw->defaddr.sin_family = AF_INET;
|
|
gw->addr.sin_family = AF_INET;
|
|
if (gw->defaddr.sin_addr.s_addr && !ntohs(gw->defaddr.sin_port))
|
|
gw->defaddr.sin_port = htons(DEFAULT_MGCP_GW_PORT);
|
|
if (gw->addr.sin_addr.s_addr && !ntohs(gw->addr.sin_port))
|
|
gw->addr.sin_port = htons(DEFAULT_MGCP_GW_PORT);
|
|
if (gw->addr.sin_addr.s_addr)
|
|
if (ast_ouraddrfor(&gw->addr.sin_addr, &gw->ourip))
|
|
memcpy(&gw->ourip, &__ourip, sizeof(gw->ourip));
|
|
|
|
return (gw_reload ? NULL : gw);
|
|
}
|
|
|
|
static struct ast_rtp *mgcp_get_rtp_peer(struct ast_channel *chan)
|
|
{
|
|
struct mgcp_subchannel *sub;
|
|
sub = chan->tech_pvt;
|
|
if (sub && sub->rtp && sub->parent->canreinvite)
|
|
return sub->rtp;
|
|
return NULL;
|
|
}
|
|
|
|
static int mgcp_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp, struct ast_rtp *vrtp, int codecs, int nat_active)
|
|
{
|
|
/* XXX Is there such thing as video support with MGCP? XXX */
|
|
struct mgcp_subchannel *sub;
|
|
sub = chan->tech_pvt;
|
|
if (sub) {
|
|
transmit_modify_with_sdp(sub, rtp, codecs);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static struct ast_rtp_protocol mgcp_rtp = {
|
|
.type = type,
|
|
.get_rtp_info = mgcp_get_rtp_peer,
|
|
.set_rtp_peer = mgcp_set_rtp_peer,
|
|
};
|
|
|
|
static int mgcp_do_debug(int fd, int argc, char *argv[])
|
|
{
|
|
if (argc != 2)
|
|
return RESULT_SHOWUSAGE;
|
|
mgcpdebug = 1;
|
|
ast_cli(fd, "MGCP Debugging Enabled\n");
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static int mgcp_no_debug(int fd, int argc, char *argv[])
|
|
{
|
|
if (argc != 3)
|
|
return RESULT_SHOWUSAGE;
|
|
mgcpdebug = 0;
|
|
ast_cli(fd, "MGCP Debugging Disabled\n");
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static char debug_usage[] =
|
|
"Usage: mgcp debug\n"
|
|
" Enables dumping of MGCP packets for debugging purposes\n";
|
|
|
|
static char no_debug_usage[] =
|
|
"Usage: mgcp no debug\n"
|
|
" Disables dumping of MGCP packets for debugging purposes\n";
|
|
|
|
static char mgcp_reload_usage[] =
|
|
"Usage: mgcp reload\n"
|
|
" Reloads MGCP configuration from mgcp.conf\n";
|
|
|
|
static struct ast_cli_entry cli_debug =
|
|
{ { "mgcp", "debug", NULL }, mgcp_do_debug, "Enable MGCP debugging", debug_usage };
|
|
static struct ast_cli_entry cli_no_debug =
|
|
{ { "mgcp", "no", "debug", NULL }, mgcp_no_debug, "Disable MGCP debugging", no_debug_usage };
|
|
static struct ast_cli_entry cli_mgcp_reload =
|
|
{ { "mgcp", "reload", NULL }, mgcp_reload, "Reload MGCP configuration", mgcp_reload_usage };
|
|
|
|
|
|
static void destroy_endpoint(struct mgcp_endpoint *e)
|
|
{
|
|
struct mgcp_subchannel *sub = e->sub->next, *s;
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_SUBS; i++) {
|
|
ast_mutex_lock(&sub->lock);
|
|
if (!ast_strlen_zero(sub->cxident)) {
|
|
transmit_connection_del(sub);
|
|
}
|
|
if (sub->rtp) {
|
|
ast_rtp_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
memset(sub->magic, 0, sizeof(sub->magic));
|
|
mgcp_queue_hangup(sub);
|
|
dump_cmd_queues(NULL, sub);
|
|
ast_mutex_unlock(&sub->lock);
|
|
sub = sub->next;
|
|
}
|
|
|
|
if (e->dsp) {
|
|
ast_dsp_free(e->dsp);
|
|
}
|
|
|
|
dump_queue(e->parent, e);
|
|
dump_cmd_queues(e, NULL);
|
|
|
|
sub = e->sub;
|
|
for (i = 0; (i < MAX_SUBS) && sub; i++) {
|
|
s = sub;
|
|
sub = sub->next;
|
|
ast_mutex_destroy(&s->lock);
|
|
ast_mutex_destroy(&s->cx_queue_lock);
|
|
free(s);
|
|
}
|
|
ast_mutex_destroy(&e->lock);
|
|
ast_mutex_destroy(&e->rqnt_queue_lock);
|
|
ast_mutex_destroy(&e->cmd_queue_lock);
|
|
free(e);
|
|
}
|
|
|
|
static void destroy_gateway(struct mgcp_gateway *g)
|
|
{
|
|
if (g->ha)
|
|
ast_free_ha(g->ha);
|
|
|
|
dump_queue(g, NULL);
|
|
|
|
free (g);
|
|
}
|
|
|
|
static void prune_gateways(void)
|
|
{
|
|
struct mgcp_gateway *g, *z, *r;
|
|
struct mgcp_endpoint *e, *p, *t;
|
|
|
|
ast_mutex_lock(&gatelock);
|
|
|
|
/* prune gateways */
|
|
for (z = NULL, g = gateways; g;) {
|
|
/* prune endpoints */
|
|
for (p = NULL, e = g->endpoints; e; ) {
|
|
if (e->delme || g->delme) {
|
|
t = e;
|
|
e = e->next;
|
|
if (!p)
|
|
g->endpoints = e;
|
|
else
|
|
p->next = e;
|
|
destroy_endpoint(t);
|
|
} else {
|
|
p = e;
|
|
e = e->next;
|
|
}
|
|
}
|
|
|
|
if (g->delme) {
|
|
r = g;
|
|
g = g->next;
|
|
if (!z)
|
|
gateways = g;
|
|
else
|
|
z->next = g;
|
|
|
|
destroy_gateway(r);
|
|
} else {
|
|
z = g;
|
|
g = g->next;
|
|
}
|
|
}
|
|
|
|
ast_mutex_unlock(&gatelock);
|
|
}
|
|
|
|
static int reload_config(void)
|
|
{
|
|
struct ast_config *cfg;
|
|
struct ast_variable *v;
|
|
struct mgcp_gateway *g;
|
|
struct mgcp_endpoint *e;
|
|
char iabuf[INET_ADDRSTRLEN];
|
|
char *cat;
|
|
struct ast_hostent ahp;
|
|
struct hostent *hp;
|
|
int format;
|
|
|
|
if (gethostname(ourhost, sizeof(ourhost)-1)) {
|
|
ast_log(LOG_WARNING, "Unable to get hostname, MGCP disabled\n");
|
|
return 0;
|
|
}
|
|
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, MGCP disabled\n", config);
|
|
return 0;
|
|
}
|
|
memset(&bindaddr, 0, sizeof(bindaddr));
|
|
dtmfmode = 0;
|
|
v = ast_variable_browse(cfg, "general");
|
|
while(v) {
|
|
/* Create the interface list */
|
|
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, "%d", &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, "port")) {
|
|
if (sscanf(v->value, "%d", &ourport) == 1) {
|
|
bindaddr.sin_port = htons(ourport);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Invalid port number '%s' at line %d of %s\n", v->value, v->lineno, config);
|
|
}
|
|
}
|
|
v = v->next;
|
|
}
|
|
|
|
/* SC: mark existing entries for deletion */
|
|
ast_mutex_lock(&gatelock);
|
|
g = gateways;
|
|
while (g) {
|
|
g->delme = 1;
|
|
e = g->endpoints;
|
|
while (e) {
|
|
e->delme = 1;
|
|
e = e->next;
|
|
}
|
|
g = g->next;
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
|
|
cat = ast_category_browse(cfg, NULL);
|
|
while(cat) {
|
|
if (strcasecmp(cat, "general")) {
|
|
ast_mutex_lock(&gatelock);
|
|
g = build_gateway(cat, ast_variable_browse(cfg, cat));
|
|
if (g) {
|
|
if (option_verbose > 2) {
|
|
ast_verbose(VERBOSE_PREFIX_3 "Added gateway '%s'\n", g->name);
|
|
}
|
|
g->next = gateways;
|
|
gateways = g;
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
|
|
/* FS: process queue and IO */
|
|
if (monitor_thread == pthread_self()) {
|
|
if (sched) ast_sched_runq(sched);
|
|
if (io) ast_io_wait(io, 10);
|
|
}
|
|
}
|
|
cat = ast_category_browse(cfg, cat);
|
|
}
|
|
|
|
/* SC: prune deleted entries etc. */
|
|
prune_gateways();
|
|
|
|
if (ntohl(bindaddr.sin_addr.s_addr)) {
|
|
memcpy(&__ourip, &bindaddr.sin_addr, sizeof(__ourip));
|
|
} else {
|
|
hp = ast_gethostbyname(ourhost, &ahp);
|
|
if (!hp) {
|
|
ast_log(LOG_WARNING, "Unable to get our IP address, MGCP disabled\n");
|
|
ast_config_destroy(cfg);
|
|
return 0;
|
|
}
|
|
memcpy(&__ourip, hp->h_addr, sizeof(__ourip));
|
|
}
|
|
if (!ntohs(bindaddr.sin_port))
|
|
bindaddr.sin_port = ntohs(DEFAULT_MGCP_CA_PORT);
|
|
bindaddr.sin_family = AF_INET;
|
|
ast_mutex_lock(&netlock);
|
|
if (mgcpsock > -1)
|
|
close(mgcpsock);
|
|
|
|
if (mgcpsock_read_id != NULL)
|
|
ast_io_remove(io, mgcpsock_read_id);
|
|
mgcpsock_read_id = NULL;
|
|
|
|
mgcpsock = socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (mgcpsock < 0) {
|
|
ast_log(LOG_WARNING, "Unable to create MGCP socket: %s\n", strerror(errno));
|
|
} else {
|
|
if (bind(mgcpsock, (struct sockaddr *)&bindaddr, sizeof(bindaddr)) < 0) {
|
|
ast_log(LOG_WARNING, "Failed to bind to %s:%d: %s\n",
|
|
ast_inet_ntoa(iabuf, sizeof(iabuf), bindaddr.sin_addr), ntohs(bindaddr.sin_port),
|
|
strerror(errno));
|
|
close(mgcpsock);
|
|
mgcpsock = -1;
|
|
} else {
|
|
if (option_verbose > 1) {
|
|
ast_verbose(VERBOSE_PREFIX_2 "MGCP Listening on %s:%d\n",
|
|
ast_inet_ntoa(iabuf, sizeof(iabuf), bindaddr.sin_addr), ntohs(bindaddr.sin_port));
|
|
ast_verbose(VERBOSE_PREFIX_2 "Using TOS bits %d\n", tos);
|
|
}
|
|
if (setsockopt(mgcpsock, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)))
|
|
ast_log(LOG_WARNING, "Unable to set TOS to %d\n", tos);
|
|
}
|
|
}
|
|
ast_mutex_unlock(&netlock);
|
|
ast_config_destroy(cfg);
|
|
|
|
/* SC: send audit only to the new endpoints */
|
|
g = gateways;
|
|
while (g) {
|
|
e = g->endpoints;
|
|
while (e && e->needaudit) {
|
|
e->needaudit = 0;
|
|
transmit_audit_endpoint(e);
|
|
ast_verbose(VERBOSE_PREFIX_3 "MGCP Auditing endpoint %s@%s for hookstate\n", e->name, g->name);
|
|
e = e->next;
|
|
}
|
|
g = g->next;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int load_module()
|
|
{
|
|
int res;
|
|
|
|
sched = sched_context_create();
|
|
if (!sched) {
|
|
ast_log(LOG_WARNING, "Unable to create schedule context\n");
|
|
return -1;
|
|
}
|
|
io = io_context_create();
|
|
if (!io) {
|
|
ast_log(LOG_WARNING, "Unable to create I/O context\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!(res = reload_config())) {
|
|
/* Make sure we can register our mgcp channel type */
|
|
if (ast_channel_register(&mgcp_tech)) {
|
|
ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
|
|
return -1;
|
|
}
|
|
ast_rtp_proto_register(&mgcp_rtp);
|
|
ast_cli_register(&cli_show_endpoints);
|
|
ast_cli_register(&cli_audit_endpoint);
|
|
ast_cli_register(&cli_debug);
|
|
ast_cli_register(&cli_no_debug);
|
|
ast_cli_register(&cli_mgcp_reload);
|
|
|
|
/* And start the monitor for the first time */
|
|
restart_monitor();
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static int mgcp_do_reload(void)
|
|
{
|
|
reload_config();
|
|
return 0;
|
|
}
|
|
|
|
static int mgcp_reload(int fd, int argc, char *argv[])
|
|
{
|
|
ast_mutex_lock(&mgcp_reload_lock);
|
|
if (mgcp_reloading) {
|
|
ast_verbose("Previous mgcp reload not yet done\n");
|
|
} else
|
|
mgcp_reloading = 1;
|
|
ast_mutex_unlock(&mgcp_reload_lock);
|
|
restart_monitor();
|
|
return 0;
|
|
}
|
|
|
|
int reload(void)
|
|
{
|
|
mgcp_reload(0, 0, NULL);
|
|
return 0;
|
|
}
|
|
|
|
int unload_module()
|
|
{
|
|
struct mgcp_endpoint *e;
|
|
struct mgcp_gateway *g;
|
|
|
|
/* Check to see if we're reloading */
|
|
if (ast_mutex_trylock(&mgcp_reload_lock)) {
|
|
ast_log(LOG_WARNING, "MGCP is currently reloading. Unable to remove module.\n");
|
|
return -1;
|
|
} else {
|
|
mgcp_reloading = 1;
|
|
ast_mutex_unlock(&mgcp_reload_lock);
|
|
}
|
|
|
|
/* First, take us out of the channel loop */
|
|
ast_channel_unregister(&mgcp_tech);
|
|
|
|
/* Shut down the monitoring thread */
|
|
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");
|
|
/* We always want to leave this in a consistent state */
|
|
ast_channel_register(&mgcp_tech);
|
|
mgcp_reloading = 0;
|
|
mgcp_reload(0, 0, NULL);
|
|
return -1;
|
|
}
|
|
|
|
if (!ast_mutex_lock(&gatelock)) {
|
|
g = gateways;
|
|
while (g) {
|
|
g->delme = 1;
|
|
e = g->endpoints;
|
|
while (e) {
|
|
e->delme = 1;
|
|
e = e->next;
|
|
}
|
|
g = g->next;
|
|
}
|
|
|
|
prune_gateways();
|
|
ast_mutex_unlock(&gatelock);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to lock the gateways list.\n");
|
|
/* We always want to leave this in a consistent state */
|
|
ast_channel_register(&mgcp_tech);
|
|
/* Allow the monitor to restart */
|
|
monitor_thread = AST_PTHREADT_NULL;
|
|
mgcp_reloading = 0;
|
|
mgcp_reload(0, 0, NULL);
|
|
return -1;
|
|
}
|
|
|
|
close(mgcpsock);
|
|
ast_rtp_proto_unregister(&mgcp_rtp);
|
|
ast_cli_unregister(&cli_show_endpoints);
|
|
ast_cli_unregister(&cli_audit_endpoint);
|
|
ast_cli_unregister(&cli_debug);
|
|
ast_cli_unregister(&cli_no_debug);
|
|
ast_cli_unregister(&cli_mgcp_reload);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usecount()
|
|
{
|
|
return usecnt;
|
|
}
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|
|
|
|
char *description()
|
|
{
|
|
return (char *) desc;
|
|
}
|