4950 lines
146 KiB
C
4950 lines
146 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, 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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/*! \file
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*
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* \brief Implementation of Media Gateway Control Protocol
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* \par See also
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* \arg \ref Config_mgcp
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* \arg \ref res_pktccops
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*
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* \ingroup channel_drivers
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*/
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/*** MODULEINFO
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<use type="module">res_pktccops</use>
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<support_level>extended</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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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 <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/lock.h"
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#include "asterisk/channel.h"
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#include "asterisk/config.h"
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#include "asterisk/module.h"
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#include "asterisk/pbx.h"
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#include "asterisk/sched.h"
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#include "asterisk/io.h"
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#include "asterisk/rtp_engine.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/netsock.h"
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#include "asterisk/causes.h"
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#include "asterisk/dsp.h"
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#include "asterisk/devicestate.h"
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#include "asterisk/stringfields.h"
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#include "asterisk/abstract_jb.h"
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#include "asterisk/event.h"
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#include "asterisk/chanvars.h"
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#include "asterisk/pktccops.h"
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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 DIRECTMEDIA 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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/*! Global jitterbuffer configuration - by default, jb is disabled
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* \note Values shown here match the defaults shown in mgcp.conf.sample */
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static struct ast_jb_conf default_jbconf =
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{
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.flags = 0,
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.max_size = 200,
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.resync_threshold = 1000,
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.impl = "fixed",
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.target_extra = 40,
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};
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static struct ast_jb_conf global_jbconf;
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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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/*! } */
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static const char * const 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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enum {
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MGCP_CMD_EPCF,
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MGCP_CMD_CRCX,
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MGCP_CMD_MDCX,
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MGCP_CMD_DLCX,
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MGCP_CMD_RQNT,
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MGCP_CMD_NTFY,
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MGCP_CMD_AUEP,
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MGCP_CMD_AUCX,
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MGCP_CMD_RSIP
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};
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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 parkinglot[AST_MAX_CONTEXT];
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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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static int ncs = 0;
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static int pktcgatealloc = 0;
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static int hangupongateremove = 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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static struct {
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unsigned int tos;
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unsigned int tos_audio;
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unsigned int cos;
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unsigned int cos_audio;
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} qos = { 0, 0, 0, 0 };
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static int immediate = 0;
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static int callwaiting = 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 directmedia = DIRECTMEDIA;
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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 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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*/
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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 struct ast_format_cap *global_capability;
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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 ast_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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*/
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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; /*!< int version of verb = command */
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unsigned int trid; /*!< int version of identifier = transaction id */
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struct mgcp_request *next; /*!< next in the queue */
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};
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/*! \brief mgcp_message: 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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/*! 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_instance *rtp;
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struct sockaddr_in tmpdest;
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char txident[80]; /*! \todo FIXME 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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int cxmode;
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struct mgcp_request *cx_queue; /*!< pending CX commands */
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ast_mutex_t cx_queue_lock; /*!< 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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int sdpsent;
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struct cops_gate *gate;
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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 number */
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char cid_name[AST_MAX_EXTENSION]; /*!< Caller*ID name */
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char lastcallerid[AST_MAX_EXTENSION]; /*!< Last Caller*ID */
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char dtmf_buf[AST_MAX_EXTENSION]; /*!< place to collect digits be */
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char call_forward[AST_MAX_EXTENSION]; /*!< Last Caller*ID */
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char musicclass[MAX_MUSICCLASS];
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char curtone[80]; /*!< Current tone */
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char mailbox[AST_MAX_EXTENSION];
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char parkinglot[AST_MAX_CONTEXT]; /*!< Parkinglot */
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struct ast_event_sub *mwi_event_sub;
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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 directmedia;
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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 ncs;
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int pktcgatealloc;
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int hangupongateremove;
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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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struct ast_format_cap *cap;
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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]; /*!< request identifier */
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struct mgcp_request *rqnt_queue; /*!< pending RQNT commands */
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ast_mutex_t rqnt_queue_lock;
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struct mgcp_request *cmd_queue; /*!< pending commands other than RQNT */
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ast_mutex_t cmd_queue_lock;
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int delme; /*!< needed for reload */
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int needaudit; /*!< 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 ast_variable *chanvars; /*!< Variables to set for channel created by user */
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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; /*!< 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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/* 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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/* Wildcard endpoint name */
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char wcardep[30];
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struct mgcp_message *msgs; /*!< gw msg queue */
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ast_mutex_t msgs_lock; /*!< queue lock */
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int retransid; /*!< retrans timer id */
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int delme; /*!< needed for reload */
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int realtime;
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struct mgcp_response *responses;
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struct mgcp_gateway *next;
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} *gateways = NULL;
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AST_MUTEX_DEFINE_STATIC(mgcp_reload_lock);
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static int mgcp_reloading = 0;
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/*! \brief gatelock: mutex for gateway/endpoint lists */
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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_connect(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_instance *rtp, const struct ast_format_cap *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 char *mgcp_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
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static int reload_config(int reload);
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static struct ast_channel *mgcp_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, 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, const void *data, size_t datalen);
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static int mgcp_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
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static int mgcp_senddigit_begin(struct ast_channel *ast, char digit);
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static int mgcp_senddigit_end(struct ast_channel *ast, char digit, unsigned int duration);
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static int mgcp_devicestate(void *data);
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static void add_header_offhook(struct mgcp_subchannel *sub, struct mgcp_request *resp, char *tone);
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static int transmit_connect_with_sdp(struct mgcp_subchannel *sub, struct ast_rtp_instance *rtp);
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static struct mgcp_gateway *build_gateway(char *cat, struct ast_variable *v);
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static int mgcp_alloc_pktcgate(struct mgcp_subchannel *sub);
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static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *preparse, char *buf, size_t buflen);
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static struct ast_variable *add_var(const char *buf, struct ast_variable *list);
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static struct ast_variable *copy_vars(struct ast_variable *src);
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static struct ast_channel_tech mgcp_tech = {
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.type = "MGCP",
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.description = tdesc,
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.properties = AST_CHAN_TP_WANTSJITTER | AST_CHAN_TP_CREATESJITTER,
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.requester = mgcp_request,
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.devicestate = mgcp_devicestate,
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.call = mgcp_call,
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.hangup = mgcp_hangup,
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.answer = mgcp_answer,
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.read = mgcp_read,
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.write = mgcp_write,
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.indicate = mgcp_indicate,
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.fixup = mgcp_fixup,
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.send_digit_begin = mgcp_senddigit_begin,
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.send_digit_end = mgcp_senddigit_end,
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.bridge = ast_rtp_instance_bridge,
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.func_channel_read = acf_channel_read,
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};
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static void mwi_event_cb(const struct ast_event *event, void *userdata)
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{
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/* This module does not handle MWI in an event-based manner. However, it
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* subscribes to MWI for each mailbox that is configured so that the core
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* knows that we care about it. Then, chan_mgcp will get the MWI from the
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* event cache instead of checking the mailbox directly. */
|
|
}
|
|
|
|
static int has_voicemail(struct mgcp_endpoint *p)
|
|
{
|
|
int new_msgs;
|
|
struct ast_event *event;
|
|
char *mbox, *cntx;
|
|
|
|
cntx = mbox = ast_strdupa(p->mailbox);
|
|
strsep(&cntx, "@");
|
|
if (ast_strlen_zero(cntx))
|
|
cntx = "default";
|
|
|
|
event = ast_event_get_cached(AST_EVENT_MWI,
|
|
AST_EVENT_IE_MAILBOX, AST_EVENT_IE_PLTYPE_STR, mbox,
|
|
AST_EVENT_IE_CONTEXT, AST_EVENT_IE_PLTYPE_STR, cntx,
|
|
AST_EVENT_IE_END);
|
|
|
|
if (event) {
|
|
new_msgs = ast_event_get_ie_uint(event, AST_EVENT_IE_NEWMSGS);
|
|
ast_event_destroy(event);
|
|
} else
|
|
new_msgs = ast_app_has_voicemail(p->mailbox, NULL);
|
|
|
|
return new_msgs;
|
|
}
|
|
|
|
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_debug(1, "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_instance_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
dump_cmd_queues(NULL, sub);
|
|
return 0;
|
|
}
|
|
|
|
/* 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;
|
|
ast_debug(1, "Retransmitting:\n%s\n to %s:%d\n", resp->buf, ast_inet_ntoa(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;
|
|
ast_debug(1, "Transmitting:\n%s\n to %s:%d\n", req->data, ast_inet_ntoa(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;
|
|
}
|
|
|
|
/* 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);
|
|
for (prev = NULL, cur = gw->msgs; cur; prev = cur, cur = cur->next) {
|
|
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;
|
|
if (q) {
|
|
w->next = q;
|
|
} else {
|
|
w->next = NULL;
|
|
}
|
|
q = w;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&gw->msgs_lock);
|
|
|
|
while (q) {
|
|
cur = q;
|
|
q = q->next;
|
|
ast_free(cur);
|
|
}
|
|
}
|
|
|
|
static void mgcp_queue_frame(struct mgcp_subchannel *sub, struct ast_frame *f)
|
|
{
|
|
for (;;) {
|
|
if (sub->owner) {
|
|
if (!ast_channel_trylock(sub->owner)) {
|
|
ast_queue_frame(sub->owner, f);
|
|
ast_channel_unlock(sub->owner);
|
|
break;
|
|
} else {
|
|
DEADLOCK_AVOIDANCE(&sub->lock);
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void mgcp_queue_hangup(struct mgcp_subchannel *sub)
|
|
{
|
|
for (;;) {
|
|
if (sub->owner) {
|
|
if (!ast_channel_trylock(sub->owner)) {
|
|
ast_queue_hangup(sub->owner);
|
|
ast_channel_unlock(sub->owner);
|
|
break;
|
|
} else {
|
|
DEADLOCK_AVOIDANCE(&sub->lock);
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void mgcp_queue_control(struct mgcp_subchannel *sub, int control)
|
|
{
|
|
struct ast_frame f = { AST_FRAME_CONTROL, { control } };
|
|
return mgcp_queue_frame(sub, &f);
|
|
}
|
|
|
|
static int retrans_pkt(const 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);
|
|
|
|
for (prev = NULL, cur = gw->msgs; cur; prev = cur, cur = cur->next) {
|
|
if (cur->retrans < MAX_RETRANS) {
|
|
cur->retrans++;
|
|
ast_debug(1, "Retransmitting #%d transaction %u on [%s]\n",
|
|
cur->retrans, cur->seqno, gw->name);
|
|
__mgcp_xmit(gw, cur->buf, cur->len);
|
|
} 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;
|
|
|
|
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;
|
|
ast_free(cur);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* 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;
|
|
struct mgcp_message *cur;
|
|
struct mgcp_gateway *gw;
|
|
struct timeval now;
|
|
|
|
if (!(msg = ast_malloc(sizeof(*msg) + len))) {
|
|
return -1;
|
|
}
|
|
if (!(gw = ((p && p->parent) ? p->parent : NULL))) {
|
|
ast_free(msg);
|
|
return -1;
|
|
}
|
|
|
|
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);
|
|
for (cur = gw->msgs; cur && cur->next; cur = cur->next);
|
|
if (cur) {
|
|
cur->next = msg;
|
|
} else {
|
|
gw->msgs = msg;
|
|
}
|
|
|
|
now = ast_tvnow();
|
|
msg->expire = now.tv_sec * 1000 + now.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);
|
|
__mgcp_xmit(gw, msg->buf, msg->len);
|
|
/* XXX Should schedule retransmission XXX */
|
|
return 0;
|
|
}
|
|
|
|
/* 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;
|
|
ast_mutex_t *l;
|
|
|
|
ast_debug(1, "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 */
|
|
/* buggy sb5120 */
|
|
if (!sub->parent->ncs) {
|
|
while (q) {
|
|
r = q->next;
|
|
ast_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;
|
|
}
|
|
}
|
|
|
|
if (!(r = ast_malloc(sizeof(*r)))) {
|
|
ast_log(LOG_WARNING, "Cannot post MGCP request: insufficient memory\n");
|
|
ast_mutex_unlock(l);
|
|
return -1;
|
|
}
|
|
memcpy(r, req, sizeof(*r));
|
|
|
|
if (!(*queue)) {
|
|
ast_debug(1, "Posting Request:\n%s to %s:%d\n", req->data,
|
|
ast_inet_ntoa(p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
|
|
res = mgcp_postrequest(p, sub, req->data, req->len, seqno);
|
|
} else {
|
|
ast_debug(1, "Queueing Request:\n%s to %s:%d\n", req->data,
|
|
ast_inet_ntoa(p->parent->addr.sin_addr), ntohs(p->parent->addr.sin_port));
|
|
}
|
|
|
|
/* XXX 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] = "";
|
|
const char *distinctive_ring = NULL;
|
|
struct varshead *headp;
|
|
struct ast_var_t *current;
|
|
|
|
ast_debug(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 (!ast_strlen_zero(distinctive_ring)) {
|
|
snprintf(tone, sizeof(tone), "L/wt%s", distinctive_ring);
|
|
ast_debug(3, "MGCP distinctive callwait %s\n", tone);
|
|
} else {
|
|
ast_copy_string(tone, (p->ncs ? "L/wt1" : "L/wt"), sizeof(tone));
|
|
ast_debug(3, "MGCP normal callwait %s\n", tone);
|
|
}
|
|
break;
|
|
case MGCP_ONHOOK:
|
|
default:
|
|
if (!ast_strlen_zero(distinctive_ring)) {
|
|
snprintf(tone, sizeof(tone), "L/r%s", distinctive_ring);
|
|
ast_debug(3, "MGCP distinctive ring %s\n", tone);
|
|
} else {
|
|
ast_copy_string(tone, "L/rg", sizeof(tone));
|
|
ast_debug(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;
|
|
ast_setstate(ast, AST_STATE_RINGING);
|
|
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,
|
|
S_COR(ast->connected.id.number.valid, ast->connected.id.number.str, ""),
|
|
S_COR(ast->connected.id.name.valid, ast->connected.id.name.str, ""));
|
|
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);
|
|
return res;
|
|
}
|
|
|
|
static int mgcp_hangup(struct ast_channel *ast)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct ast_channel *bridged;
|
|
|
|
ast_debug(1, "mgcp_hangup(%s)\n", ast->name);
|
|
if (!ast->tech_pvt) {
|
|
ast_debug(1, "Asked to hangup channel not connected\n");
|
|
return 0;
|
|
}
|
|
if (strcmp(sub->magic, MGCP_SUBCHANNEL_MAGIC)) {
|
|
ast_debug(1, "Invalid magic. MGCP subchannel freed up already.\n");
|
|
return 0;
|
|
}
|
|
ast_mutex_lock(&sub->lock);
|
|
ast_debug(3, "MGCP mgcp_hangup(%s) on %s@%s\n", ast->name, p->name, p->parent->name);
|
|
|
|
if ((p->dtmfmode & MGCP_DTMF_INBAND) && p->dsp) {
|
|
/* check whether other channel is active. */
|
|
if (!sub->next->owner) {
|
|
if (p->dtmfmode & MGCP_DTMF_HYBRID) {
|
|
p->dtmfmode &= ~MGCP_DTMF_INBAND;
|
|
}
|
|
ast_debug(2, "MGCP free dsp on %s@%s\n", p->name, p->parent->name);
|
|
ast_dsp_free(p->dsp);
|
|
p->dsp = NULL;
|
|
}
|
|
}
|
|
|
|
sub->owner = NULL;
|
|
|
|
/* for deleting gate */
|
|
if (p->pktcgatealloc && sub->gate) {
|
|
sub->gate->gate_open = NULL;
|
|
sub->gate->gate_remove = NULL;
|
|
sub->gate->got_dq_gi = NULL;
|
|
sub->gate->tech_pvt = NULL;
|
|
if (sub->gate->state == GATE_ALLOC_PROGRESS || sub->gate->state == GATE_ALLOCATED) {
|
|
ast_pktccops_gate_alloc(GATE_DEL, sub->gate, 0, 0, 0, 0, 0, 0, NULL, NULL);
|
|
} else {
|
|
sub->gate->deltimer = time(NULL) + 5;
|
|
}
|
|
sub->gate = 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)) {
|
|
/* ncs fix! */
|
|
bridged = ast_bridged_channel(sub->next->owner);
|
|
transmit_notify_request_with_callerid(p->sub, (p->ncs ? "L/wt1" : "L/wt"),
|
|
S_COR(bridged->caller.id.number.valid, bridged->caller.id.number.str, ""),
|
|
S_COR(bridged->caller.id.name.valid, bridged->caller.id.name.str, ""));
|
|
}
|
|
} 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)) {
|
|
bridged = ast_bridged_channel(sub->next->owner);
|
|
transmit_notify_request_with_callerid(p->sub, "L/rg",
|
|
S_COR(bridged->caller.id.number.valid, bridged->caller.id.number.str, ""),
|
|
S_COR(bridged->caller.id.name.valid, bridged->caller.id.name.str, ""));
|
|
}
|
|
}
|
|
|
|
} else if ((sub == p->sub->next) && p->hookstate == MGCP_OFFHOOK) {
|
|
transmit_notify_request(sub, p->ncs ? "" : "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';
|
|
if (p) {
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
}
|
|
/* Reset temporary destination */
|
|
memset(&sub->tmpdest, 0, sizeof(sub->tmpdest));
|
|
if (sub->rtp) {
|
|
ast_rtp_instance_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
|
|
ast_module_unref(ast_module_info->self);
|
|
|
|
if ((p->hookstate == MGCP_ONHOOK) && (!sub->next->rtp)) {
|
|
p->hidecallerid = 0;
|
|
if (p->hascallwaiting && !p->callwaiting) {
|
|
ast_verb(3, "Enabling call waiting on %s\n", ast->name);
|
|
p->callwaiting = -1;
|
|
}
|
|
if (has_voicemail(p)) {
|
|
ast_debug(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 {
|
|
ast_debug(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 char *handle_mgcp_show_endpoints(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
struct mgcp_gateway *mg;
|
|
struct mgcp_endpoint *me;
|
|
int hasendpoints = 0;
|
|
struct ast_variable * v = NULL;
|
|
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "mgcp show endpoints";
|
|
e->usage =
|
|
"Usage: mgcp show endpoints\n"
|
|
" Lists all endpoints known to the MGCP (Media Gateway Control Protocol) subsystem.\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
return NULL;
|
|
}
|
|
|
|
if (a->argc != 3) {
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
ast_mutex_lock(&gatelock);
|
|
for (mg = gateways; mg; mg = mg->next) {
|
|
ast_cli(a->fd, "Gateway '%s' at %s (%s%s)\n", mg->name, mg->addr.sin_addr.s_addr ? ast_inet_ntoa(mg->addr.sin_addr) : ast_inet_ntoa(mg->defaddr.sin_addr), mg->realtime ? "Realtime, " : "", mg->dynamic ? "Dynamic" : "Static");
|
|
for (me = mg->endpoints; me; me = me->next) {
|
|
ast_cli(a->fd, " -- '%s@%s in '%s' is %s\n", me->name, mg->name, me->context, me->sub->owner ? "active" : "idle");
|
|
if (me->chanvars) {
|
|
ast_cli(a->fd, " Variables:\n");
|
|
for (v = me->chanvars ; v ; v = v->next) {
|
|
ast_cli(a->fd, " %s = '%s'\n", v->name, v->value);
|
|
}
|
|
}
|
|
hasendpoints = 1;
|
|
}
|
|
if (!hasendpoints) {
|
|
ast_cli(a->fd, " << No Endpoints Defined >> ");
|
|
}
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
static char *handle_mgcp_audit_endpoint(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
struct mgcp_gateway *mg;
|
|
struct mgcp_endpoint *me;
|
|
int found = 0;
|
|
char *ename,*gname, *c;
|
|
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "mgcp audit endpoint";
|
|
e->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";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
return NULL;
|
|
}
|
|
|
|
if (!mgcpdebug) {
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
if (a->argc != 4)
|
|
return CLI_SHOWUSAGE;
|
|
/* split the name into parts by null */
|
|
ename = ast_strdupa(a->argv[3]);
|
|
for (gname = ename; *gname; gname++) {
|
|
if (*gname == '@') {
|
|
*gname = 0;
|
|
gname++;
|
|
break;
|
|
}
|
|
}
|
|
if (gname[0] == '[') {
|
|
gname++;
|
|
}
|
|
if ((c = strrchr(gname, ']'))) {
|
|
*c = '\0';
|
|
}
|
|
ast_mutex_lock(&gatelock);
|
|
for (mg = gateways; mg; mg = mg->next) {
|
|
if (!strcasecmp(mg->name, gname)) {
|
|
for (me = mg->endpoints; me; me = me->next) {
|
|
if (!strcasecmp(me->name, ename)) {
|
|
found = 1;
|
|
transmit_audit_endpoint(me);
|
|
break;
|
|
}
|
|
}
|
|
if (found) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!found) {
|
|
ast_cli(a->fd, " << Could not find endpoint >> ");
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
static char *handle_mgcp_set_debug(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "mgcp set debug {on|off}";
|
|
e->usage =
|
|
"Usage: mgcp set debug {on|off}\n"
|
|
" Enables/Disables dumping of MGCP packets for debugging purposes\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
return NULL;
|
|
}
|
|
|
|
if (a->argc != e->args)
|
|
return CLI_SHOWUSAGE;
|
|
|
|
if (!strncasecmp(a->argv[e->args - 1], "on", 2)) {
|
|
mgcpdebug = 1;
|
|
ast_cli(a->fd, "MGCP Debugging Enabled\n");
|
|
} else if (!strncasecmp(a->argv[3], "off", 3)) {
|
|
mgcpdebug = 0;
|
|
ast_cli(a->fd, "MGCP Debugging Disabled\n");
|
|
} else {
|
|
return CLI_SHOWUSAGE;
|
|
}
|
|
return CLI_SUCCESS;
|
|
}
|
|
|
|
static struct ast_cli_entry cli_mgcp[] = {
|
|
AST_CLI_DEFINE(handle_mgcp_audit_endpoint, "Audit specified MGCP endpoint"),
|
|
AST_CLI_DEFINE(handle_mgcp_show_endpoints, "List defined MGCP endpoints"),
|
|
AST_CLI_DEFINE(handle_mgcp_set_debug, "Enable/Disable MGCP debugging"),
|
|
AST_CLI_DEFINE(mgcp_reload, "Reload MGCP configuration"),
|
|
};
|
|
|
|
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);
|
|
}
|
|
ast_verb(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);
|
|
ast_debug(1, "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;
|
|
|
|
f = ast_rtp_instance_read(sub->rtp, 0);
|
|
/* Don't send RFC2833 if we're not supposed to */
|
|
if (f && (f->frametype == AST_FRAME_DTMF) && !(sub->parent->dtmfmode & MGCP_DTMF_RFC2833))
|
|
return &ast_null_frame;
|
|
if (sub->owner) {
|
|
/* We already hold the channel lock */
|
|
if (f->frametype == AST_FRAME_VOICE) {
|
|
if (!ast_format_cap_iscompatible(sub->owner->nativeformats, &f->subclass.format)) {
|
|
ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(&f->subclass.format));
|
|
ast_format_cap_set(sub->owner->nativeformats, &f->subclass.format);
|
|
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;
|
|
char buf[256];
|
|
|
|
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 (!(ast_format_cap_iscompatible(ast->nativeformats, &frame->subclass.format))) {
|
|
ast_log(LOG_WARNING, "Asked to transmit frame type %s, while native formats is %s (read/write = %s/%s)\n",
|
|
ast_getformatname(&frame->subclass.format),
|
|
ast_getformatname_multiple(buf, sizeof(buf), ast->nativeformats),
|
|
ast_getformatname(&ast->readformat),
|
|
ast_getformatname(&ast->writeformat));
|
|
/* return -1; */
|
|
}
|
|
}
|
|
if (sub) {
|
|
ast_mutex_lock(&sub->lock);
|
|
if (!sub->sdpsent && sub->gate) {
|
|
if (sub->gate->state == GATE_ALLOCATED) {
|
|
ast_debug(1, "GATE ALLOCATED, sending sdp\n");
|
|
transmit_modify_with_sdp(sub, NULL, 0);
|
|
}
|
|
}
|
|
if ((sub->parent->sub == sub) || !sub->parent->singlepath) {
|
|
if (sub->rtp) {
|
|
res = ast_rtp_instance_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_begin(struct ast_channel *ast, char digit)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
int res = 0;
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
if (p->dtmfmode & MGCP_DTMF_INBAND || p->dtmfmode & MGCP_DTMF_HYBRID) {
|
|
ast_debug(1, "Sending DTMF using inband/hybrid\n");
|
|
res = -1; /* Let asterisk play inband indications */
|
|
} else if (p->dtmfmode & MGCP_DTMF_RFC2833) {
|
|
ast_debug(1, "Sending DTMF using RFC2833");
|
|
ast_rtp_instance_dtmf_begin(sub->rtp, digit);
|
|
} else {
|
|
ast_log(LOG_ERROR, "Don't know about DTMF_MODE %d\n", p->dtmfmode);
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int mgcp_senddigit_end(struct ast_channel *ast, char digit, unsigned int duration)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
int res = 0;
|
|
char tmp[4];
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
if (p->dtmfmode & MGCP_DTMF_INBAND || p->dtmfmode & MGCP_DTMF_HYBRID) {
|
|
ast_debug(1, "Stopping DTMF using inband/hybrid\n");
|
|
res = -1; /* Tell Asterisk to stop inband indications */
|
|
} else if (p->dtmfmode & MGCP_DTMF_RFC2833) {
|
|
ast_debug(1, "Stopping DTMF using RFC2833\n");
|
|
if (sub->parent->ncs) {
|
|
tmp[0] = digit;
|
|
tmp[1] = '\0';
|
|
} else {
|
|
tmp[0] = 'D';
|
|
tmp[1] = '/';
|
|
tmp[2] = digit;
|
|
tmp[3] = '\0';
|
|
}
|
|
transmit_notify_request(sub, tmp);
|
|
ast_rtp_instance_dtmf_end(sub->rtp, digit);
|
|
} else {
|
|
ast_log(LOG_ERROR, "Don't know about DTMF_MODE %d\n", p->dtmfmode);
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
|
|
return res;
|
|
}
|
|
|
|
/*!
|
|
* \brief mgcp_devicestate: channel callback for device status monitoring
|
|
* \param data tech/resource name of MGCP device to query
|
|
*
|
|
* Callback for device state management in channel subsystem
|
|
* to obtain device status (up/down) of a specific MGCP endpoint
|
|
*
|
|
* \return device status result (from devicestate.h) AST_DEVICE_INVALID (not available) or AST_DEVICE_UNKNOWN (available but unknown state)
|
|
*/
|
|
static int mgcp_devicestate(void *data)
|
|
{
|
|
struct mgcp_gateway *g;
|
|
struct mgcp_endpoint *e = NULL;
|
|
char *tmp, *endpt, *gw;
|
|
int ret = AST_DEVICE_INVALID;
|
|
|
|
endpt = ast_strdupa(data);
|
|
if ((tmp = strchr(endpt, '@'))) {
|
|
*tmp++ = '\0';
|
|
gw = tmp;
|
|
} else
|
|
goto error;
|
|
|
|
ast_mutex_lock(&gatelock);
|
|
for (g = gateways; g; g = g->next) {
|
|
if (strcasecmp(g->name, gw) == 0) {
|
|
e = g->endpoints;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!e)
|
|
goto error;
|
|
|
|
for (; e; e = e->next) {
|
|
if (strcasecmp(e->name, endpt) == 0) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!e)
|
|
goto error;
|
|
|
|
/*
|
|
* As long as the gateway/endpoint is valid, we'll
|
|
* assume that the device is available and its state
|
|
* can be tracked.
|
|
*/
|
|
ret = AST_DEVICE_UNKNOWN;
|
|
|
|
error:
|
|
ast_mutex_unlock(&gatelock);
|
|
return ret;
|
|
}
|
|
|
|
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, const void *data, size_t datalen)
|
|
{
|
|
struct mgcp_subchannel *sub = ast->tech_pvt;
|
|
int res = 0;
|
|
|
|
ast_debug(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
|
|
if (!sub->sdpsent) { /* will hide the inband progress!!! */
|
|
transmit_notify_request(sub, sub->parent->ncs ? "L/rt" : "G/rt");
|
|
}
|
|
#endif
|
|
break;
|
|
case AST_CONTROL_BUSY:
|
|
transmit_notify_request(sub, "L/bz");
|
|
break;
|
|
case AST_CONTROL_CONGESTION:
|
|
transmit_notify_request(sub, sub->parent->ncs ? "L/cg" : "G/cg");
|
|
break;
|
|
case AST_CONTROL_HOLD:
|
|
ast_moh_start(ast, data, NULL);
|
|
break;
|
|
case AST_CONTROL_UNHOLD:
|
|
ast_moh_stop(ast);
|
|
break;
|
|
case AST_CONTROL_SRCUPDATE:
|
|
ast_rtp_instance_update_source(sub->rtp);
|
|
break;
|
|
case AST_CONTROL_SRCCHANGE:
|
|
ast_rtp_instance_change_source(sub->rtp);
|
|
break;
|
|
case AST_CONTROL_PROGRESS:
|
|
case AST_CONTROL_PROCEEDING:
|
|
transmit_modify_request(sub);
|
|
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, const char *linkedid)
|
|
{
|
|
struct ast_channel *tmp;
|
|
struct ast_variable *v = NULL;
|
|
struct mgcp_endpoint *i = sub->parent;
|
|
struct ast_format tmpfmt;
|
|
|
|
tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, linkedid, i->accountcode, i->exten, i->context, i->amaflags, "MGCP/%s@%s-%d", i->name, i->parent->name, sub->id);
|
|
if (tmp) {
|
|
tmp->tech = &mgcp_tech;
|
|
ast_format_cap_copy(tmp->nativeformats, i->cap);
|
|
if (ast_format_cap_is_empty(tmp->nativeformats)) {
|
|
ast_format_cap_copy(tmp->nativeformats, global_capability);
|
|
}
|
|
if (sub->rtp) {
|
|
ast_channel_set_fd(tmp, 0, ast_rtp_instance_fd(sub->rtp, 0));
|
|
}
|
|
if (i->dtmfmode & (MGCP_DTMF_INBAND | MGCP_DTMF_HYBRID)) {
|
|
i->dsp = ast_dsp_new();
|
|
ast_dsp_set_features(i->dsp, DSP_FEATURE_DIGIT_DETECT);
|
|
/* this is to prevent clipping of dtmf tones during dsp processing */
|
|
ast_dsp_set_digitmode(i->dsp, DSP_DIGITMODE_NOQUELCH);
|
|
} else {
|
|
i->dsp = NULL;
|
|
}
|
|
if (state == AST_STATE_RING)
|
|
tmp->rings = 1;
|
|
|
|
ast_best_codec(tmp->nativeformats, &tmpfmt);
|
|
ast_format_copy(&tmp->writeformat, &tmpfmt);
|
|
ast_format_copy(&tmp->rawwriteformat, &tmpfmt);
|
|
ast_format_copy(&tmp->readformat, &tmpfmt);
|
|
ast_format_copy(&tmp->rawreadformat, &tmpfmt);
|
|
tmp->tech_pvt = sub;
|
|
if (!ast_strlen_zero(i->language))
|
|
ast_string_field_set(tmp, language, i->language);
|
|
if (!ast_strlen_zero(i->accountcode))
|
|
ast_string_field_set(tmp, accountcode, i->accountcode);
|
|
if (i->amaflags)
|
|
tmp->amaflags = i->amaflags;
|
|
sub->owner = tmp;
|
|
ast_module_ref(ast_module_info->self);
|
|
tmp->callgroup = i->callgroup;
|
|
tmp->pickupgroup = i->pickupgroup;
|
|
ast_string_field_set(tmp, call_forward, i->call_forward);
|
|
ast_copy_string(tmp->context, i->context, sizeof(tmp->context));
|
|
ast_copy_string(tmp->exten, i->exten, sizeof(tmp->exten));
|
|
|
|
/* Don't use ast_set_callerid() here because it will
|
|
* generate a needless NewCallerID event */
|
|
if (!ast_strlen_zero(i->cid_num)) {
|
|
tmp->caller.ani.number.valid = 1;
|
|
tmp->caller.ani.number.str = ast_strdup(i->cid_num);
|
|
}
|
|
|
|
if (!i->adsi) {
|
|
tmp->adsicpe = AST_ADSI_UNAVAILABLE;
|
|
}
|
|
tmp->priority = 1;
|
|
|
|
/* Set channel variables for this call from configuration */
|
|
for (v = i->chanvars ; v ; v = v->next) {
|
|
char valuebuf[1024];
|
|
pbx_builtin_setvar_helper(tmp, v->name, ast_get_encoded_str(v->value, valuebuf, sizeof(valuebuf)));
|
|
}
|
|
|
|
if (sub->rtp) {
|
|
ast_jb_configure(tmp, &global_jbconf);
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
ast_verb(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, char *def)
|
|
{
|
|
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 def;
|
|
}
|
|
|
|
static char *get_header(struct mgcp_request *req, char *name)
|
|
{
|
|
int start = 0;
|
|
return __get_header(req, name, &start, "");
|
|
}
|
|
|
|
/*! \brief get_csv: (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_gateway *find_realtime_gw(char *name, char *at, struct sockaddr_in *sin)
|
|
{
|
|
struct mgcp_gateway *g = NULL;
|
|
struct ast_variable *mgcpgwconfig = NULL;
|
|
struct ast_variable *gwv, *epname = NULL;
|
|
struct mgcp_endpoint *e;
|
|
char lines[256];
|
|
int i, j;
|
|
|
|
ast_debug(1, "*** find Realtime MGCPGW\n");
|
|
|
|
if (!(i = ast_check_realtime("mgcpgw")) || !(j = ast_check_realtime("mgcpep"))) {
|
|
return NULL;
|
|
}
|
|
|
|
if (ast_strlen_zero(at)) {
|
|
ast_debug(1, "null gw name\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!(mgcpgwconfig = ast_load_realtime("mgcpgw", "name", at, NULL))) {
|
|
return NULL;
|
|
}
|
|
|
|
/*!
|
|
* \note This is a fairly odd way of instantiating lines. Instead of each
|
|
* line created by virtue of being in the database (and loaded via
|
|
* ast_load_realtime_multientry), this code forces a specific order with a
|
|
* "lines" entry in the "mgcpgw" record. This has benefits, because as with
|
|
* chan_dahdi, values are inherited across definitions. The downside is
|
|
* that it's not as clear what the values will be simply by looking at a
|
|
* single row in the database, and it's probable that the sanest configuration
|
|
* should have the first column in the "mgcpep" table be "clearvars", with a
|
|
* static value of "all", if any variables are set at all. It may be worth
|
|
* making this assumption explicit in the code in the future, and then just
|
|
* using ast_load_realtime_multientry for the "mgcpep" records.
|
|
*/
|
|
lines[0] = '\0';
|
|
for (gwv = mgcpgwconfig; gwv; gwv = gwv->next) {
|
|
if (!strcasecmp(gwv->name, "lines")) {
|
|
ast_copy_string(lines, gwv->value, sizeof(lines));
|
|
break;
|
|
}
|
|
}
|
|
/* Position gwv at the end of the list */
|
|
for (gwv = gwv && gwv->next ? gwv : mgcpgwconfig; gwv->next; gwv = gwv->next);
|
|
|
|
if (!ast_strlen_zero(lines)) {
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(line)[100];
|
|
);
|
|
AST_STANDARD_APP_ARGS(args, lines);
|
|
for (i = 0; i < args.argc; i++) {
|
|
gwv->next = ast_load_realtime("mgcpep", "name", at, "line", args.line[i], NULL);
|
|
|
|
/* Remove "line" AND position gwv at the end of the list. */
|
|
for (epname = NULL; gwv->next; gwv = gwv->next) {
|
|
if (!strcasecmp(gwv->next->name, "line")) {
|
|
/* Remove it from the list */
|
|
epname = gwv->next;
|
|
gwv->next = gwv->next->next;
|
|
}
|
|
}
|
|
/* Since "line" instantiates the configuration, we have to move it to the end. */
|
|
if (epname) {
|
|
gwv->next = epname;
|
|
epname->next = NULL;
|
|
gwv = gwv->next;
|
|
}
|
|
}
|
|
}
|
|
for (gwv = mgcpgwconfig; gwv; gwv = gwv->next) {
|
|
ast_debug(1, "MGCP Realtime var: %s => %s\n", gwv->name, gwv->value);
|
|
}
|
|
|
|
if (mgcpgwconfig) {
|
|
g = build_gateway(at, mgcpgwconfig);
|
|
ast_variables_destroy(mgcpgwconfig);
|
|
}
|
|
if (g) {
|
|
g->next = gateways;
|
|
g->realtime = 1;
|
|
gateways = g;
|
|
for (e = g->endpoints; e; e = e->next) {
|
|
transmit_audit_endpoint(e);
|
|
e->needaudit = 0;
|
|
}
|
|
}
|
|
return g;
|
|
}
|
|
|
|
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 tmp[256] = "";
|
|
char *at = NULL, *c;
|
|
int found = 0;
|
|
if (name) {
|
|
ast_copy_string(tmp, name, sizeof(tmp));
|
|
at = strchr(tmp, '@');
|
|
if (!at) {
|
|
ast_log(LOG_NOTICE, "Endpoint '%s' has no at sign!\n", name);
|
|
return NULL;
|
|
}
|
|
*at++ = '\0';
|
|
}
|
|
ast_mutex_lock(&gatelock);
|
|
if (at && (at[0] == '[')) {
|
|
at++;
|
|
c = strrchr(at, ']');
|
|
if (c) {
|
|
*c = '\0';
|
|
}
|
|
}
|
|
for (g = gateways ? gateways : find_realtime_gw(name, at, sin); g; g = g->next ? g->next : find_realtime_gw(name, at, sin)) {
|
|
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));
|
|
{
|
|
struct ast_sockaddr tmp1, tmp2;
|
|
struct sockaddr_in tmp3 = {0,};
|
|
|
|
tmp3.sin_addr = g->ourip;
|
|
ast_sockaddr_from_sin(&tmp1, &g->addr);
|
|
ast_sockaddr_from_sin(&tmp2, &tmp3);
|
|
if (ast_ouraddrfor(&tmp1, &tmp2)) {
|
|
memcpy(&g->ourip, &__ourip, sizeof(g->ourip));
|
|
}
|
|
ast_sockaddr_to_sin(&tmp2, &tmp3);
|
|
g->ourip = tmp3.sin_addr;
|
|
}
|
|
ast_verb(3, "Registered MGCP gateway '%s' at %s port %d\n", g->name, ast_inet_ntoa(g->addr.sin_addr), ntohs(g->addr.sin_port));
|
|
}
|
|
/* not dynamic, check if the name matches */
|
|
} else if (name) {
|
|
if (strcasecmp(g->name, at)) {
|
|
g = g->next;
|
|
continue;
|
|
}
|
|
/* 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)) {
|
|
if(!g->next)
|
|
g = find_realtime_gw(name, at, sin);
|
|
else
|
|
g = g->next;
|
|
continue;
|
|
}
|
|
} else {
|
|
continue;
|
|
}
|
|
for (p = g->endpoints; p; p = p->next) {
|
|
ast_debug(1, "Searching on %s@%s for subchannel\n", p->name, g->name);
|
|
if (msgid) {
|
|
sub = p->sub;
|
|
found = 1;
|
|
break;
|
|
} else if (name && !strcasecmp(p->name, tmp)) {
|
|
ast_debug(1, "Coundn't determine subchannel, assuming current master %s@%s-%d\n",
|
|
p->name, g->name, p->sub->id);
|
|
sub = p->sub;
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (sub && found) {
|
|
ast_mutex_lock(&sub->lock);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
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;
|
|
for (; *c; c++) {
|
|
if (*c == '\n') {
|
|
/* We've got a new header */
|
|
*c = 0;
|
|
ast_debug(3, "Header: %s (%d)\n", req->header[f], (int) strlen(req->header[f]));
|
|
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;
|
|
}
|
|
}
|
|
/* 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;
|
|
for (; *c; c++) {
|
|
if (*c == '\n') {
|
|
/* We've got a new line */
|
|
*c = 0;
|
|
ast_debug(3, "Line: %s (%d)\n", req->line[f], (int) strlen(req->line[f]));
|
|
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;
|
|
}
|
|
}
|
|
/* 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';
|
|
}
|
|
}
|
|
}
|
|
|
|
ast_debug(1, "Verb: '%s', Identifier: '%s', Endpoint: '%s', Version: '%s'\n",
|
|
req->verb, req->identifier, req->endpoint, req->version);
|
|
ast_debug(1, "%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;
|
|
struct ast_format_cap *peercap;
|
|
int peerNonCodecCapability;
|
|
struct sockaddr_in sin;
|
|
struct ast_sockaddr sin_tmp;
|
|
char *codecs;
|
|
struct ast_hostent ahp; struct hostent *hp;
|
|
int codec, codec_count=0;
|
|
int iterator;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
char tmp1[256], tmp2[256], tmp3[256];
|
|
|
|
/* 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 %30d 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_sockaddr_from_sin(&sin_tmp, &sin);
|
|
ast_rtp_instance_set_remote_address(sub->rtp, &sin_tmp);
|
|
ast_debug(3, "Peer RTP is at port %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
|
|
/* Scan through the RTP payload types specified in a "m=" line: */
|
|
ast_rtp_codecs_payloads_clear(ast_rtp_instance_get_codecs(sub->rtp), sub->rtp);
|
|
codecs = ast_strdupa(m + len);
|
|
while (!ast_strlen_zero(codecs)) {
|
|
if (sscanf(codecs, "%30d%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_codecs_payloads_set_m_type(ast_rtp_instance_get_codecs(sub->rtp), 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: %30u %127[^/]/", &codec, mimeSubtype) != 2)
|
|
continue;
|
|
/* Note: should really look at the 'freq' and '#chans' params too */
|
|
ast_rtp_codecs_payloads_set_rtpmap_type(ast_rtp_instance_get_codecs(sub->rtp), sub->rtp, codec, "audio", mimeSubtype, 0);
|
|
}
|
|
|
|
/* Now gather all of the codecs that were asked for: */
|
|
if (!(peercap = ast_format_cap_alloc_nolock())) {
|
|
return -1;
|
|
}
|
|
ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(sub->rtp), peercap, &peerNonCodecCapability);
|
|
ast_format_cap_joint_copy(global_capability, peercap, p->cap);
|
|
ast_debug(1, "Capabilities: us - %s, them - %s, combined - %s\n",
|
|
ast_getformatname_multiple(tmp1, sizeof(tmp1), global_capability),
|
|
ast_getformatname_multiple(tmp2, sizeof(tmp2), peercap),
|
|
ast_getformatname_multiple(tmp3, sizeof(tmp3), p->cap));
|
|
peercap = ast_format_cap_destroy(peercap);
|
|
|
|
ast_debug(1, "Non-codec capabilities: us - %d, them - %d, combined - %d\n",
|
|
nonCodecCapability, peerNonCodecCapability, p->nonCodecCapability);
|
|
if (ast_format_cap_is_empty(p->cap)) {
|
|
ast_log(LOG_WARNING, "No compatible codecs!\n");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int add_header(struct mgcp_request *req, const char *var, const 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 */
|
|
ast_copy_string(req->data + req->len, "\r\n", sizeof(req->data) - req->len);
|
|
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;
|
|
/* 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%s\r\n", verb, oseq, p->name, p->parent->name, p->ncs ? " NCS 1.0" : "");
|
|
} else {
|
|
+ snprintf(req->header[req->headers], sizeof(req->data) - req->len, "%s %d %s@%s MGCP 1.0%s\r\n", verb, oseq, p->name, p->parent->name, p->ncs ? " NCS 1.0" : "");
|
|
}
|
|
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;
|
|
|
|
if (!sub) {
|
|
return -1;
|
|
}
|
|
|
|
respprep(&resp, p, msg, req, msgrest);
|
|
if (!(mgr = ast_calloc(1, sizeof(*mgr) + resp.len + 1))) {
|
|
return send_response(sub, &resp);
|
|
}
|
|
/* Store MGCP response in case we have to retransmit */
|
|
sscanf(req->identifier, "%30d", &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_instance *rtp)
|
|
{
|
|
int len;
|
|
int codec;
|
|
char costr[80];
|
|
struct sockaddr_in sin;
|
|
struct ast_sockaddr sin_tmp;
|
|
char v[256];
|
|
char s[256];
|
|
char o[256];
|
|
char c[256];
|
|
char t[256];
|
|
char m[256] = "";
|
|
char a[1024] = "";
|
|
int x;
|
|
struct ast_format tmpfmt;
|
|
struct sockaddr_in dest = { 0, };
|
|
struct ast_sockaddr dest_tmp;
|
|
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_instance_get_local_address(sub->rtp, &sin_tmp);
|
|
ast_sockaddr_to_sin(&sin_tmp, &sin);
|
|
if (rtp) {
|
|
ast_rtp_instance_get_remote_address(sub->rtp, &dest_tmp);
|
|
ast_sockaddr_to_sin(&dest_tmp, &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;
|
|
}
|
|
}
|
|
ast_debug(1, "We're at %s port %d\n", ast_inet_ntoa(p->parent->ourip), ntohs(sin.sin_port));
|
|
ast_copy_string(v, "v=0\r\n", sizeof(v));
|
|
snprintf(o, sizeof(o), "o=root %d %d IN IP4 %s\r\n", (int)getpid(), (int)getpid(), ast_inet_ntoa(dest.sin_addr));
|
|
ast_copy_string(s, "s=session\r\n", sizeof(s));
|
|
snprintf(c, sizeof(c), "c=IN IP4 %s\r\n", ast_inet_ntoa(dest.sin_addr));
|
|
ast_copy_string(t, "t=0 0\r\n", sizeof(t));
|
|
snprintf(m, sizeof(m), "m=audio %d RTP/AVP", ntohs(dest.sin_port));
|
|
|
|
ast_format_cap_iter_start(p->cap);
|
|
while (!(ast_format_cap_iter_next(p->cap, &tmpfmt))) {
|
|
if (AST_FORMAT_GET_TYPE(tmpfmt.id) != AST_FORMAT_TYPE_AUDIO) {
|
|
/* Audio is now discontiguous */
|
|
continue;
|
|
}
|
|
if (ast_format_cap_iscompatible(p->cap, &tmpfmt)) {
|
|
ast_debug(1, "Answering with capability %s\n", ast_getformatname(&tmpfmt));
|
|
codec = ast_rtp_codecs_payload_code(ast_rtp_instance_get_codecs(sub->rtp), 1, &tmpfmt, 0);
|
|
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_subtype2(1, &tmpfmt, 0, 0));
|
|
strncat(a, costr, sizeof(a) - strlen(a) - 1);
|
|
}
|
|
}
|
|
}
|
|
ast_format_cap_iter_end(p->cap);
|
|
|
|
for (x = 1LL; x <= AST_RTP_MAX; x <<= 1) {
|
|
if (p->nonCodecCapability & x) {
|
|
ast_debug(1, "Answering with non-codec capability %d\n", (int) x);
|
|
codec = ast_rtp_codecs_payload_code(ast_rtp_instance_get_codecs(sub->rtp), 0, NULL, 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_subtype2(0, NULL, x, 0));
|
|
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_instance *rtp, const struct ast_format_cap *codecs)
|
|
{
|
|
struct mgcp_request resp;
|
|
char local[256];
|
|
char tmp[80];
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct ast_format tmpfmt;
|
|
struct ast_sockaddr sub_tmpdest_tmp;
|
|
|
|
if (ast_strlen_zero(sub->cxident) && rtp) {
|
|
/* We don't have a CXident yet, store the destination and
|
|
wait a bit */
|
|
ast_rtp_instance_get_remote_address(rtp, &sub_tmpdest_tmp);
|
|
ast_sockaddr_to_sin(&sub_tmpdest_tmp, &sub->tmpdest);
|
|
return 0;
|
|
}
|
|
ast_copy_string(local, "e:on, s:off, p:20", sizeof(local));
|
|
ast_format_cap_iter_start(p->cap);
|
|
while (!(ast_format_cap_iter_next(p->cap, &tmpfmt))) {
|
|
if (AST_FORMAT_GET_TYPE(tmpfmt.id) != AST_FORMAT_TYPE_AUDIO) {
|
|
/* Audio is now discontiguous */
|
|
continue;
|
|
}
|
|
if (ast_format_cap_iscompatible(p->cap, &tmpfmt)) {
|
|
snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype2(1, &tmpfmt, 0, 0));
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
}
|
|
ast_format_cap_iter_end(p->cap);
|
|
|
|
if (sub->gate) {
|
|
if (sub->gate->state == GATE_ALLOCATED || sub->gate->state == GATE_OPEN) {
|
|
snprintf(tmp, sizeof(tmp), ", dq-gi:%x", sub->gate->gateid);
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
sub->sdpsent = 1;
|
|
} else {
|
|
/* oops wait */
|
|
ast_debug(1, "Waiting for opened gate...\n");
|
|
sub->sdpsent = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
reqprep(&resp, p, "MDCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
add_header(&resp, "L", local);
|
|
add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
|
|
/* 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", "");*/
|
|
add_sdp(&resp, sub, rtp);
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_MDCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq);
|
|
}
|
|
|
|
static int transmit_connect_with_sdp(struct mgcp_subchannel *sub, struct ast_rtp_instance *rtp)
|
|
{
|
|
struct mgcp_request resp;
|
|
char local[256];
|
|
char tmp[80];
|
|
struct ast_format tmpfmt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
ast_debug(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);
|
|
|
|
ast_copy_string(local, "e:on, s:off, p:20", sizeof(local));
|
|
|
|
ast_format_cap_iter_start(p->cap);
|
|
while (!(ast_format_cap_iter_next(p->cap, &tmpfmt))) {
|
|
if (AST_FORMAT_GET_TYPE(tmpfmt.id) != AST_FORMAT_TYPE_AUDIO) {
|
|
/* Audio is now discontiguous */
|
|
continue;
|
|
}
|
|
if (ast_format_cap_iscompatible(p->cap, &tmpfmt)) {
|
|
snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype2(1, &tmpfmt, 0, 0));
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
}
|
|
ast_format_cap_iter_end(p->cap);
|
|
|
|
if (sub->gate) {
|
|
if(sub->gate->state == GATE_ALLOCATED) {
|
|
snprintf(tmp, sizeof(tmp), ", dq-gi:%x", sub->gate->gateid);
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
}
|
|
sub->sdpsent = 1;
|
|
reqprep(&resp, p, "CRCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
add_header(&resp, "L", local);
|
|
add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
|
|
/* X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
/*add_header(&resp, "S", "");*/
|
|
add_sdp(&resp, sub, rtp);
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_CRCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq);
|
|
}
|
|
|
|
static int mgcp_pktcgate_remove(struct cops_gate *gate)
|
|
{
|
|
struct mgcp_subchannel *sub = gate->tech_pvt;
|
|
|
|
if (!sub) {
|
|
return 1;
|
|
}
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
ast_debug(1, "Pktc: gate 0x%x deleted\n", gate->gateid);
|
|
if (sub->gate->state != GATE_CLOSED && sub->parent->hangupongateremove) {
|
|
sub->gate = NULL;
|
|
if (sub->owner) {
|
|
ast_softhangup(sub->owner, AST_CAUSE_REQUESTED_CHAN_UNAVAIL);
|
|
ast_channel_unlock(sub->owner);
|
|
}
|
|
} else {
|
|
sub->gate = NULL;
|
|
}
|
|
ast_mutex_unlock(&sub->lock);
|
|
return 1;
|
|
}
|
|
|
|
static int mgcp_pktcgate_open(struct cops_gate *gate)
|
|
{
|
|
struct mgcp_subchannel *sub = gate->tech_pvt;
|
|
if (!sub) {
|
|
return 1;
|
|
}
|
|
ast_mutex_lock(&sub->lock);
|
|
ast_debug(1, "Pktc: gate 0x%x open\n", gate->gateid);
|
|
if (!sub->sdpsent) transmit_modify_with_sdp(sub, NULL, 0);
|
|
ast_mutex_unlock(&sub->lock);
|
|
return 1;
|
|
}
|
|
|
|
static int mgcp_alloc_pktcgate(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
sub->gate = ast_pktccops_gate_alloc(GATE_SET, NULL, ntohl(p->parent->addr.sin_addr.s_addr),
|
|
8, 128000, 232, 0, 0, NULL, &mgcp_pktcgate_remove);
|
|
|
|
if (!sub->gate) {
|
|
return 0;
|
|
}
|
|
sub->gate->tech_pvt = sub;
|
|
sub->gate->gate_open = &mgcp_pktcgate_open;
|
|
return 1;
|
|
}
|
|
|
|
static int transmit_connect(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_request resp;
|
|
char local[256];
|
|
char tmp[80];
|
|
struct ast_format tmpfmt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
ast_copy_string(local, "p:20, s:off, e:on", sizeof(local));
|
|
|
|
ast_format_cap_iter_start(p->cap);
|
|
while (!(ast_format_cap_iter_next(p->cap, &tmpfmt))) {
|
|
if (ast_format_cap_iscompatible(p->cap, &tmpfmt)) {
|
|
snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype2(1, &tmpfmt, 0, 0));
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
}
|
|
ast_format_cap_iter_end(p->cap);
|
|
|
|
ast_debug(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);
|
|
sub->sdpsent = 0;
|
|
reqprep(&resp, p, "CRCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
add_header(&resp, "L", local);
|
|
add_header(&resp, "M", "inactive");
|
|
/* X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
/*add_header(&resp, "S", "");*/
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_CRCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq);
|
|
}
|
|
|
|
static int transmit_notify_request(struct mgcp_subchannel *sub, char *tone)
|
|
{
|
|
struct mgcp_request resp;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
ast_debug(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]);
|
|
ast_copy_string(p->curtone, tone, sizeof(p->curtone));
|
|
reqprep(&resp, p, "RQNT");
|
|
add_header(&resp, "X", p->rqnt_ident);
|
|
switch (p->hookstate) {
|
|
case MGCP_ONHOOK:
|
|
add_header(&resp, "R", "L/hd(N)");
|
|
break;
|
|
case MGCP_OFFHOOK:
|
|
add_header_offhook(sub, &resp, tone);
|
|
break;
|
|
}
|
|
if (!ast_strlen_zero(tone)) {
|
|
add_header(&resp, "S", tone);
|
|
}
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_RQNT;
|
|
resp.trid = oseq;
|
|
return send_request(p, NULL, &resp, oseq);
|
|
}
|
|
|
|
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;
|
|
struct timeval t = ast_tvnow();
|
|
struct ast_tm tm;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
|
|
ast_localtime(&t, &tm, NULL);
|
|
n = callername;
|
|
l = callernum;
|
|
if (!n)
|
|
n = "";
|
|
if (!l)
|
|
l = "";
|
|
|
|
/* Keep track of last callerid for blacklist and callreturn */
|
|
ast_copy_string(p->lastcallerid, l, sizeof(p->lastcallerid));
|
|
|
|
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);
|
|
ast_copy_string(p->curtone, tone, sizeof(p->curtone));
|
|
reqprep(&resp, p, "RQNT");
|
|
add_header(&resp, "X", p->rqnt_ident);
|
|
switch (p->hookstate) {
|
|
case MGCP_ONHOOK:
|
|
add_header(&resp, "R", "L/hd(N)");
|
|
break;
|
|
case MGCP_OFFHOOK:
|
|
add_header_offhook(sub, &resp, tone);
|
|
break;
|
|
}
|
|
if (!ast_strlen_zero(tone2)) {
|
|
add_header(&resp, "S", tone2);
|
|
}
|
|
ast_debug(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]);
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_RQNT;
|
|
resp.trid = oseq;
|
|
return send_request(p, NULL, &resp, oseq);
|
|
}
|
|
|
|
static int transmit_modify_request(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_request resp;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct ast_format tmpfmt;
|
|
int fc = 1;
|
|
char local[256];
|
|
char tmp[80];
|
|
|
|
if (ast_strlen_zero(sub->cxident)) {
|
|
/* We don't have a CXident yet, store the destination and
|
|
wait a bit */
|
|
return 0;
|
|
}
|
|
ast_debug(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);
|
|
|
|
ast_copy_string(local, "", sizeof(local));
|
|
ast_format_cap_iter_start(p->cap);
|
|
while (!(ast_format_cap_iter_next(p->cap, &tmpfmt))) {
|
|
if (p->ncs && !fc) {
|
|
ast_format_cap_set(p->cap, &tmpfmt); /* sb5120e bug */
|
|
break;
|
|
} else {
|
|
fc = 0;
|
|
snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype2(1, &tmpfmt, 0, 0));
|
|
}
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
}
|
|
ast_format_cap_iter_end(p->cap);
|
|
|
|
if (!sub->sdpsent) {
|
|
if (sub->gate) {
|
|
if (sub->gate->state == GATE_ALLOCATED || sub->gate->state == GATE_OPEN) {
|
|
snprintf(tmp, sizeof(tmp), ", dq-gi:%x", sub->gate->gateid);
|
|
strncat(local, tmp, sizeof(local) - strlen(local) - 1);
|
|
} else {
|
|
/* we still don't have gateid wait */
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
reqprep(&resp, p, "MDCX");
|
|
add_header(&resp, "C", sub->callid);
|
|
if (!sub->sdpsent) {
|
|
add_header(&resp, "L", local);
|
|
}
|
|
add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
|
|
/* 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_offhook(sub, &resp, "");
|
|
break;
|
|
}
|
|
if (!sub->sdpsent) {
|
|
add_sdp(&resp, sub, NULL);
|
|
sub->sdpsent = 1;
|
|
}
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_MDCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq);
|
|
}
|
|
|
|
|
|
static void add_header_offhook(struct mgcp_subchannel *sub, struct mgcp_request *resp, char *tone)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
char tone_indicate_end = 0;
|
|
|
|
/* We also should check the tone to indicate, because it have no sense
|
|
to request notify D/[0-9#*] (dtmf keys) if we are sending congestion
|
|
tone for example G/cg */
|
|
if (p && (!strcasecmp(tone, (p->ncs ? "L/ro" : "G/cg")))) {
|
|
tone_indicate_end = 1;
|
|
}
|
|
|
|
if (p && p->sub && p->sub->owner &&
|
|
p->sub->owner->_state >= AST_STATE_RINGING &&
|
|
(p->dtmfmode & (MGCP_DTMF_INBAND | MGCP_DTMF_HYBRID))) {
|
|
add_header(resp, "R", "L/hu(N),L/hf(N)");
|
|
|
|
} else if (!tone_indicate_end){
|
|
add_header(resp, "R", (p->ncs ? "L/hu(N),L/hf(N),L/[0-9#*](N)" : "L/hu(N),L/hf(N),D/[0-9#*](N)"));
|
|
} else {
|
|
ast_debug(1, "We don't want more digits if we will end the call\n");
|
|
add_header(resp, "R", "L/hu(N),L/hf(N)");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
static int transmit_audit_endpoint(struct mgcp_endpoint *p)
|
|
{
|
|
struct mgcp_request resp;
|
|
reqprep(&resp, p, "AUEP");
|
|
/* 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");
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_AUEP;
|
|
resp.trid = oseq;
|
|
return send_request(p, NULL, &resp, oseq);
|
|
}
|
|
|
|
static int transmit_connection_del(struct mgcp_subchannel *sub)
|
|
{
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
struct mgcp_request resp;
|
|
|
|
ast_debug(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");
|
|
/* check if call id is avail */
|
|
if (sub->callid[0])
|
|
add_header(&resp, "C", sub->callid);
|
|
/* X header should not be sent. kept for compatibility */
|
|
add_header(&resp, "X", sub->txident);
|
|
/* check if cxident is avail */
|
|
if (sub->cxident[0])
|
|
add_header(&resp, "I", sub->cxident);
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_DLCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, sub, &resp, oseq);
|
|
}
|
|
|
|
static int transmit_connection_del_w_params(struct mgcp_endpoint *p, char *callid, char *cxident)
|
|
{
|
|
struct mgcp_request resp;
|
|
|
|
ast_debug(3, "Delete connection %s %s@%s on callid: %s\n",
|
|
cxident ? cxident : "", p->name, p->parent->name, callid ? callid : "");
|
|
reqprep(&resp, p, "DLCX");
|
|
/* check if call id is avail */
|
|
if (callid && *callid)
|
|
add_header(&resp, "C", callid);
|
|
/* check if cxident is avail */
|
|
if (cxident && *cxident)
|
|
add_header(&resp, "I", cxident);
|
|
/* fill in new fields */
|
|
resp.cmd = MGCP_CMD_DLCX;
|
|
resp.trid = oseq;
|
|
return send_request(p, p->sub, &resp, oseq);
|
|
}
|
|
|
|
/*! \brief dump_cmd_queues: (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, ast_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, ast_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, ast_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, ast_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, ast_free(q), q=t);
|
|
sub->cx_queue = NULL;
|
|
ast_mutex_unlock(&sub->cx_queue_lock);
|
|
}
|
|
}
|
|
|
|
|
|
/*! \brief find_command: (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;
|
|
|
|
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) {
|
|
ast_debug(1, "Posting Queued Request:\n%s to %s:%d\n", (*queue)->data,
|
|
ast_inet_ntoa(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;
|
|
}
|
|
|
|
/* 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) {
|
|
ast_verb(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->cxident[0] && (req->cmd == MGCP_CMD_CRCX)) {
|
|
ast_log(LOG_NOTICE, "DLCX for all connections on %s due to error %d\n", gw->name, result);
|
|
transmit_connection_del(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) {
|
|
/* responseAck: */
|
|
if (result == 200 && (req->cmd == MGCP_CMD_CRCX || req->cmd == MGCP_CMD_MDCX)) {
|
|
if (sub) {
|
|
transmit_response(sub, "000", resp, "OK");
|
|
if (sub->owner && sub->owner->_state == AST_STATE_RINGING) {
|
|
ast_queue_control(sub->owner, AST_CONTROL_RINGING);
|
|
}
|
|
}
|
|
}
|
|
if (req->cmd == MGCP_CMD_CRCX) {
|
|
if ((c = get_header(resp, "I"))) {
|
|
if (!ast_strlen_zero(c) && sub) {
|
|
/* 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);
|
|
}
|
|
}
|
|
ast_copy_string(sub->cxident, c, sizeof(sub->cxident));
|
|
if (sub->tmpdest.sin_addr.s_addr) {
|
|
transmit_modify_with_sdp(sub, NULL, 0);
|
|
}
|
|
} else {
|
|
/* XXX 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) {
|
|
/* 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] = "";
|
|
|
|
if (len > (sizeof(cxident) - 1))
|
|
len = sizeof(cxident) - 1;
|
|
ast_copy_string(cxident, v, len);
|
|
ast_verb(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) {
|
|
/* 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;
|
|
|
|
/* update the requested events according to the new hookstate */
|
|
transmit_notify_request(p->sub, "");
|
|
|
|
ast_verb(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;
|
|
|
|
/* update the requested events according to the new hookstate */
|
|
transmit_notify_request(p->sub, "");
|
|
|
|
ast_verb(3, "Setting hookstate of %s@%s to OFFHOOK\n", p->name, gw->name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (resp && resp->lines) {
|
|
/* 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);
|
|
}
|
|
}
|
|
}
|
|
|
|
ast_free(req);
|
|
}
|
|
|
|
static void start_rtp(struct mgcp_subchannel *sub)
|
|
{
|
|
struct ast_sockaddr bindaddr_tmp;
|
|
|
|
ast_mutex_lock(&sub->lock);
|
|
/* check again to be on the safe side */
|
|
if (sub->rtp) {
|
|
ast_rtp_instance_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
/* Allocate the RTP now */
|
|
ast_sockaddr_from_sin(&bindaddr_tmp, &bindaddr);
|
|
sub->rtp = ast_rtp_instance_new("asterisk", sched, &bindaddr_tmp, NULL);
|
|
if (sub->rtp && sub->owner)
|
|
ast_channel_set_fd(sub->owner, 0, ast_rtp_instance_fd(sub->rtp, 0));
|
|
if (sub->rtp) {
|
|
ast_rtp_instance_set_qos(sub->rtp, qos.tos_audio, qos.cos_audio, "MGCP RTP");
|
|
ast_rtp_instance_set_prop(sub->rtp, AST_RTP_PROPERTY_NAT, sub->nat);
|
|
}
|
|
/* Make a call*ID */
|
|
snprintf(sub->callid, sizeof(sub->callid), "%08lx%s", ast_random(), sub->txident);
|
|
/* Transmit the connection create */
|
|
if(!sub->parent->pktcgatealloc) {
|
|
transmit_connect_with_sdp(sub, NULL);
|
|
} else {
|
|
transmit_connect(sub);
|
|
sub->gate = NULL;
|
|
if(!mgcp_alloc_pktcgate(sub))
|
|
mgcp_queue_hangup(sub);
|
|
}
|
|
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= 0;
|
|
int getforward = 0;
|
|
int loop_pause = 100;
|
|
|
|
len = strlen(p->dtmf_buf);
|
|
|
|
while (len < AST_MAX_EXTENSION - 1) {
|
|
ast_debug(1, "Dtmf buffer '%s' for '%s@%s'\n", p->dtmf_buf, p->name, p->parent->name);
|
|
res = 1; /* Assume that we will get a digit */
|
|
while (strlen(p->dtmf_buf) == len) {
|
|
ast_safe_sleep(chan, loop_pause);
|
|
timeout -= loop_pause;
|
|
if (timeout <= 0){
|
|
res = 0;
|
|
break;
|
|
}
|
|
res = 1;
|
|
}
|
|
|
|
timeout = 0;
|
|
len = strlen(p->dtmf_buf);
|
|
|
|
if (!ast_ignore_pattern(chan->context, p->dtmf_buf)) {
|
|
/*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, DAHDI_TONE_DIALTONE);*/
|
|
transmit_notify_request(sub, "L/dl");
|
|
}
|
|
if (ast_exists_extension(chan, chan->context, p->dtmf_buf, 1, p->cid_num)) {
|
|
if (!res || !ast_matchmore_extension(chan, chan->context, p->dtmf_buf, 1, p->cid_num)) {
|
|
if (getforward) {
|
|
/* Record this as the forwarding extension */
|
|
ast_copy_string(p->call_forward, p->dtmf_buf, sizeof(p->call_forward));
|
|
ast_verb(3, "Setting call forward to '%s' on channel %s\n",
|
|
p->call_forward, chan->name);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_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(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_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);
|
|
ast_copy_string(chan->exten, p->dtmf_buf, sizeof(chan->exten));
|
|
chan->dialed.number.str = ast_strdup(p->dtmf_buf);
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
ast_set_callerid(chan,
|
|
p->hidecallerid ? "" : p->cid_num,
|
|
p->hidecallerid ? "" : p->cid_name,
|
|
chan->caller.ani.number.valid ? NULL : p->cid_num);
|
|
ast_setstate(chan, AST_STATE_RING);
|
|
/*dahdi_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, DAHDI_TONE_CONGESTION);*/
|
|
/*transmit_notify_request(p, "nbz", 1);*/
|
|
transmit_notify_request(sub, p->ncs ? "L/cg" : "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_debug(1, "not enough digits (and no ambiguous match)...\n");
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_CONGESTION);*/
|
|
transmit_notify_request(sub, p->ncs ? "L/cg" : "G/cg");
|
|
/*dahdi_wait_event(p->subs[index].zfd);*/
|
|
ast_hangup(chan);
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
return NULL;
|
|
} else if (p->hascallwaiting && p->callwaiting && !strcmp(p->dtmf_buf, "*70")) {
|
|
ast_verb(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, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
len = 0;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
timeout = firstdigittimeout;
|
|
} else if (!strcmp(p->dtmf_buf,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, DAHDI_TONE_CONGESTION);*/
|
|
transmit_notify_request(sub, p->ncs ? "L/cg" : "G/cg");
|
|
}
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
ast_hangup(chan);
|
|
return NULL;
|
|
} else if (!p->hidecallerid && !strcmp(p->dtmf_buf, "*67")) {
|
|
ast_verb(3, "Disabling Caller*ID on %s\n", chan->name);
|
|
/* Disable Caller*ID if enabled */
|
|
p->hidecallerid = 1;
|
|
ast_set_callerid(chan, "", "", NULL);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
len = 0;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
timeout = firstdigittimeout;
|
|
} else if (p->callreturn && !strcmp(p->dtmf_buf, "*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, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
break;
|
|
} else if (!strcmp(p->dtmf_buf, "*78")) {
|
|
/* Do not disturb */
|
|
ast_verb(3, "Enabled DND on channel %s\n", chan->name);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
p->dnd = 1;
|
|
getforward = 0;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
len = 0;
|
|
} else if (!strcmp(p->dtmf_buf, "*79")) {
|
|
/* Do not disturb */
|
|
ast_verb(3, "Disabled DND on channel %s\n", chan->name);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
p->dnd = 0;
|
|
getforward = 0;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
len = 0;
|
|
} else if (p->cancallforward && !strcmp(p->dtmf_buf, "*72")) {
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
getforward = 1;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
len = 0;
|
|
} else if (p->cancallforward && !strcmp(p->dtmf_buf, "*73")) {
|
|
ast_verb(3, "Cancelling call forwarding on channel %s\n", chan->name);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
memset(p->call_forward, 0, sizeof(p->call_forward));
|
|
getforward = 0;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
len = 0;
|
|
} else if (ast_parking_ext_valid(p->dtmf_buf, chan, chan->context) &&
|
|
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);
|
|
ast_verb(3, "Parking call to '%s'\n", chan->name);
|
|
break;
|
|
} else if (!ast_strlen_zero(p->lastcallerid) && !strcmp(p->dtmf_buf, "*60")) {
|
|
ast_verb(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, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
len = 0;
|
|
}
|
|
} else if (p->hidecallerid && !strcmp(p->dtmf_buf, "*82")) {
|
|
ast_verb(3, "Enabling Caller*ID on %s\n", chan->name);
|
|
/* Enable Caller*ID if enabled */
|
|
p->hidecallerid = 0;
|
|
ast_set_callerid(chan, p->cid_num, p->cid_name, NULL);
|
|
/*res = tone_zone_play_tone(p->subs[index].zfd, DAHDI_TONE_DIALRECALL);*/
|
|
transmit_notify_request(sub, "L/sl");
|
|
len = 0;
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
timeout = firstdigittimeout;
|
|
} else if (!ast_canmatch_extension(chan, chan->context, p->dtmf_buf, 1,
|
|
S_COR(chan->caller.id.number.valid, chan->caller.id.number.str, NULL))
|
|
&& ((p->dtmf_buf[0] != '*') || (strlen(p->dtmf_buf) > 2))) {
|
|
ast_debug(1, "Can't match %s from '%s' in context %s\n", p->dtmf_buf,
|
|
S_COR(chan->caller.id.number.valid, chan->caller.id.number.str, "<Unknown Caller>"),
|
|
chan->context);
|
|
break;
|
|
}
|
|
if (!timeout)
|
|
timeout = gendigittimeout;
|
|
if (len && !ast_ignore_pattern(chan->context, p->dtmf_buf))
|
|
/*tone_zone_play_tone(p->subs[index].zfd, -1);*/
|
|
ast_indicate(chan, -1);
|
|
}
|
|
#if 0
|
|
for (;;) {
|
|
res = ast_waitfordigit(chan, to);
|
|
if (!res) {
|
|
ast_debug(1, "Timeout...\n");
|
|
break;
|
|
}
|
|
if (res < 0) {
|
|
ast_debug(1, "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)) {
|
|
ast_copy_string(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 {
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif
|
|
ast_hangup(chan);
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
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_queue_control(p->sub->next->owner, AST_CONTROL_UNHOLD);
|
|
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_queue_control(p->sub->next->owner, AST_CONTROL_UNHOLD);
|
|
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);*/
|
|
ast_verb(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_debug(1, "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;
|
|
|
|
/* Off hook / answer */
|
|
if (sub->outgoing) {
|
|
/* Answered */
|
|
if (sub->owner) {
|
|
if (ast_bridged_channel(sub->owner))
|
|
ast_queue_control(sub->owner, AST_CONTROL_UNHOLD);
|
|
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, p->ncs ? "L/rt" : "G/rt");
|
|
#endif
|
|
c = mgcp_new(sub, AST_STATE_RING, NULL);
|
|
if (!c) {
|
|
ast_log(LOG_WARNING, "Unable to start PBX on channel %s@%s\n", p->name, p->parent->name);
|
|
transmit_notify_request(sub, p->ncs ? "L/cg" : "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, NULL);
|
|
if (c) {
|
|
if (ast_pthread_create_detached(&t, NULL, 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?\n");
|
|
}
|
|
if (ast_bridged_channel(sub->owner))
|
|
ast_queue_control(sub->owner, AST_CONTROL_UNHOLD);
|
|
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;
|
|
int res;
|
|
|
|
ast_debug(1, "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")) {
|
|
ast_verb(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 ((strcmp(p->name, p->parent->wcardep) != 0)) {
|
|
ast_verb(3, "Resetting interface %s@%s\n", p->name, p->parent->name);
|
|
}
|
|
/* 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;
|
|
for (tmp_ep = g->endpoints; tmp_ep; tmp_ep = tmp_ep->next) {
|
|
/*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;
|
|
ast_verb(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;
|
|
}
|
|
}
|
|
}
|
|
} else if (sub->owner) {
|
|
mgcp_queue_hangup(sub);
|
|
}
|
|
transmit_response(sub, "200", req, "OK");
|
|
/* We don't send NTFY or AUEP to wildcard ep */
|
|
if (strcmp(p->name, p->parent->wcardep) != 0) {
|
|
transmit_notify_request(sub, "");
|
|
/* 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_debug(1, "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;
|
|
|
|
if (p) {
|
|
/* When the endpoint have a Off hook transition we allways
|
|
starts without any previous dtmfs */
|
|
memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
|
|
}
|
|
|
|
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) {
|
|
ast_verb(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;
|
|
ast_verb(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_queue_control(sub->owner, AST_CONTROL_HOLD);
|
|
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 */
|
|
ast_verb(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_queue_control(sub->next->owner, AST_CONTROL_UNHOLD);
|
|
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 */
|
|
ast_verb(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;
|
|
ast_verb(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_queue_control(sub->owner, AST_CONTROL_HOLD);
|
|
|
|
if (ast_bridged_channel(sub->next->owner))
|
|
ast_queue_control(sub->next->owner, AST_CONTROL_HOLD);
|
|
|
|
handle_hd_hf(sub->next, ev);
|
|
}
|
|
} 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_queue_control(p->sub->owner, AST_CONTROL_UNHOLD);
|
|
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);
|
|
}
|
|
} else if (!strcasecmp(ev, "hu")) {
|
|
p->hookstate = MGCP_ONHOOK;
|
|
sub->cxmode = MGCP_CX_RECVONLY;
|
|
ast_debug(1, "MGCP %s@%s Went on hook\n", p->name, p->parent->name);
|
|
/* 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 {
|
|
ast_verb(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) {
|
|
ast_verb(3, "Enabling call waiting on MGCP/%s@%s-%d\n", p->name, p->parent->name, sub->id);
|
|
p->callwaiting = -1;
|
|
}
|
|
if (has_voicemail(p)) {
|
|
ast_verb(3, "MGCP handle_request(%s@%s) set vmwi(+)\n", p->name, p->parent->name);
|
|
transmit_notify_request(sub, "L/vmwi(+)");
|
|
} else {
|
|
ast_verb(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] == '#'))) {
|
|
if (sub && sub->owner && (sub->owner->_state >= AST_STATE_UP)) {
|
|
f.frametype = AST_FRAME_DTMF;
|
|
f.subclass.integer = ev[0];
|
|
f.src = "mgcp";
|
|
/* 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, (p->ncs ? "wt1" : "wt")) && (ev[0] == 'A')) {
|
|
memset(p->curtone, 0, sizeof(p->curtone));
|
|
}
|
|
} else {
|
|
p->dtmf_buf[strlen(p->dtmf_buf)] = ev[0];
|
|
p->dtmf_buf[strlen(p->dtmf_buf)] = '\0';
|
|
}
|
|
} 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(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, "%30d", &seqno) != 1) {
|
|
seqno = 0;
|
|
}
|
|
for (cur = sub->parent->parent->responses, next = cur ? cur->next : NULL; cur; cur = next, next = cur ? cur->next : NULL) {
|
|
if (now - cur->whensent > RESPONSE_TIMEOUT) {
|
|
/* Delete this entry */
|
|
if (prev)
|
|
prev->next = next;
|
|
else
|
|
sub->parent->parent->responses = next;
|
|
ast_free(cur);
|
|
} else {
|
|
if (seqno == cur->seqno)
|
|
answer = cur;
|
|
prev = cur;
|
|
}
|
|
}
|
|
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;
|
|
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;
|
|
ast_debug(1, "MGCP read: \n%s\nfrom %s:%d\n", req.data, ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
|
|
parse(&req);
|
|
if (req.headers < 1) {
|
|
/* Must have at least one header */
|
|
return 1;
|
|
}
|
|
if (ast_strlen_zero(req.identifier)) {
|
|
ast_log(LOG_NOTICE, "Message from %s missing identifier\n", ast_inet_ntoa(sin.sin_addr));
|
|
return 1;
|
|
}
|
|
|
|
if (sscanf(req.verb, "%30d", &result) && sscanf(req.identifier, "%30d", &ident)) {
|
|
if (result < 200) {
|
|
ast_debug(1, "Ignoring provisional response on transaction %d\n", ident);
|
|
return 1;
|
|
}
|
|
/* 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_debug(1, "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) {
|
|
AST_SCHED_DEL(sched, gw->retransid);
|
|
}
|
|
|
|
ast_mutex_unlock(&gw->msgs_lock);
|
|
if (cur) {
|
|
handle_response(cur->owner_ep, cur->owner_sub, result, ident, &req);
|
|
ast_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 (ast_strlen_zero(req.endpoint) ||
|
|
ast_strlen_zero(req.version) ||
|
|
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 int mgcp_prune_realtime_gateway(struct mgcp_gateway *g)
|
|
{
|
|
struct mgcp_endpoint *enext, *e;
|
|
struct mgcp_subchannel *s, *sub;
|
|
int i, prune = 1;
|
|
|
|
if (g->ha || !g->realtime || ast_mutex_trylock(&g->msgs_lock) || g->msgs) {
|
|
ast_mutex_unlock(&g->msgs_lock);
|
|
return 0;
|
|
}
|
|
|
|
for (e = g->endpoints; e; e = e->next) {
|
|
ast_mutex_lock(&e->lock);
|
|
if (e->dsp || ast_mutex_trylock(&e->rqnt_queue_lock) || ast_mutex_trylock(&e->cmd_queue_lock)) {
|
|
prune = 0;
|
|
} else if (e->rqnt_queue || e->cmd_queue) {
|
|
prune = 0;
|
|
}
|
|
s = e->sub;
|
|
for (i = 0; (i < MAX_SUBS) && s; i++) {
|
|
ast_mutex_lock(&s->lock);
|
|
if (!ast_strlen_zero(s->cxident) || s->rtp || ast_mutex_trylock(&s->cx_queue_lock) || s->gate) {
|
|
prune = 0;
|
|
} else if (s->cx_queue) {
|
|
prune = 0;
|
|
}
|
|
s = s->next;
|
|
}
|
|
}
|
|
|
|
for (e = g->endpoints, sub = e->sub, enext = e->next; e; e = enext, enext = e->next) {
|
|
for (i = 0; (i < MAX_SUBS) && sub; i++) {
|
|
s = sub;
|
|
sub = sub->next;
|
|
ast_mutex_unlock(&s->lock);
|
|
ast_mutex_unlock(&s->cx_queue_lock);
|
|
if (prune) {
|
|
ast_mutex_destroy(&s->lock);
|
|
ast_mutex_destroy(&s->cx_queue_lock);
|
|
free(s);
|
|
}
|
|
}
|
|
ast_mutex_unlock(&e->lock);
|
|
ast_mutex_unlock(&e->rqnt_queue_lock);
|
|
ast_mutex_unlock(&e->cmd_queue_lock);
|
|
if (prune) {
|
|
ast_mutex_destroy(&e->lock);
|
|
ast_mutex_destroy(&e->rqnt_queue_lock);
|
|
ast_mutex_destroy(&e->cmd_queue_lock);
|
|
free(e);
|
|
}
|
|
}
|
|
if (prune) {
|
|
ast_debug(1, "***** MGCP REALTIME PRUNE GW: %s\n", g->name);
|
|
}
|
|
return prune;
|
|
}
|
|
|
|
static void *do_monitor(void *data)
|
|
{
|
|
int res;
|
|
int reloading;
|
|
struct mgcp_gateway *g, *gprev;
|
|
/*struct mgcp_gateway *g;*/
|
|
/*struct mgcp_endpoint *e;*/
|
|
/*time_t thispass = 0, lastpass = 0;*/
|
|
time_t lastrun = 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) {
|
|
ast_verb(1, "Reloading MGCP\n");
|
|
reload_config(1);
|
|
/* Add an I/O event to our UDP socket */
|
|
if (mgcpsock > -1 && !mgcpsock_read_id) {
|
|
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
|
|
/* pruning unused realtime gateways, running in every 60 seconds*/
|
|
if(time(NULL) > (lastrun + 60)) {
|
|
ast_mutex_lock(&gatelock);
|
|
g = gateways;
|
|
gprev = NULL;
|
|
while(g) {
|
|
if(g->realtime) {
|
|
if(mgcp_prune_realtime_gateway(g)) {
|
|
if(gprev) {
|
|
gprev->next = g->next;
|
|
} else {
|
|
gateways = g->next;
|
|
}
|
|
ast_mutex_unlock(&g->msgs_lock);
|
|
ast_mutex_destroy(&g->msgs_lock);
|
|
free(g);
|
|
} else {
|
|
ast_mutex_unlock(&g->msgs_lock);
|
|
gprev = g;
|
|
}
|
|
} else {
|
|
gprev = g;
|
|
}
|
|
g = g->next;
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
lastrun = time(NULL);
|
|
}
|
|
/* 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);
|
|
/* 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)
|
|
{
|
|
/* 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_background(&monitor_thread, NULL, do_monitor, NULL) < 0) {
|
|
ast_mutex_unlock(&monlock);
|
|
ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
|
|
return -1;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&monlock);
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_channel *mgcp_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, void *data, int *cause)
|
|
{
|
|
struct mgcp_subchannel *sub;
|
|
struct ast_channel *tmpc = NULL;
|
|
char tmp[256];
|
|
char *dest = data;
|
|
|
|
if (!(ast_format_cap_has_joint(cap, global_capability))) {
|
|
ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%s'\n", ast_getformatname_multiple(tmp, sizeof(tmp), cap));
|
|
/*return NULL;*/
|
|
}
|
|
ast_copy_string(tmp, dest, sizeof(tmp));
|
|
if (ast_strlen_zero(tmp)) {
|
|
ast_log(LOG_NOTICE, "MGCP Channels require an endpoint\n");
|
|
return NULL;
|
|
}
|
|
if (!(sub = find_subchannel_and_lock(tmp, 0, NULL))) {
|
|
ast_log(LOG_WARNING, "Unable to find MGCP endpoint '%s'\n", tmp);
|
|
*cause = AST_CAUSE_UNREGISTERED;
|
|
return NULL;
|
|
}
|
|
|
|
ast_verb(3, "MGCP mgcp_request(%s)\n", tmp);
|
|
ast_verb(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, requestor ? requestor->linkedid : NULL);
|
|
ast_mutex_unlock(&sub->lock);
|
|
if (!tmpc)
|
|
ast_log(LOG_WARNING, "Unable to make channel for '%s'\n", tmp);
|
|
restart_monitor();
|
|
return tmpc;
|
|
}
|
|
|
|
/* modified for reload support */
|
|
/*! \brief build_gateway: parse mgcp.conf and create gateway/endpoint structures */
|
|
static struct mgcp_gateway *build_gateway(char *cat, struct ast_variable *v)
|
|
{
|
|
struct mgcp_gateway *gw;
|
|
struct mgcp_endpoint *e;
|
|
struct mgcp_subchannel *sub;
|
|
struct ast_variable *chanvars = NULL;
|
|
|
|
/*char txident[80];*/
|
|
int i=0, y=0;
|
|
int gw_reload = 0;
|
|
int ep_reload = 0;
|
|
directmedia = DIRECTMEDIA;
|
|
|
|
/* locate existing gateway */
|
|
for (gw = gateways; gw; gw = gw->next) {
|
|
if (!strcasecmp(cat, gw->name)) {
|
|
/* gateway already exists */
|
|
gw->delme = 0;
|
|
gw_reload = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!gw && !(gw = ast_calloc(1, sizeof(*gw)))) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!gw_reload) {
|
|
gw->expire = -1;
|
|
gw->realtime = 0;
|
|
gw->retransid = -1;
|
|
ast_mutex_init(&gw->msgs_lock);
|
|
ast_copy_string(gw->name, cat, sizeof(gw->name));
|
|
/* check if the name is numeric ip */
|
|
if ((strchr(gw->name, '.')) && inet_addr(gw->name) != INADDR_NONE)
|
|
gw->isnamedottedip = 1;
|
|
}
|
|
for (; v; v = v->next) {
|
|
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 */
|
|
AST_SCHED_DEL(sched, gw->expire);
|
|
gw->dynamic = 0;
|
|
{
|
|
struct ast_sockaddr tmp;
|
|
|
|
ast_sockaddr_from_sin(&tmp, &gw->addr);
|
|
if (ast_get_ip(&tmp, v->value)) {
|
|
if (!gw_reload) {
|
|
ast_mutex_destroy(&gw->msgs_lock);
|
|
ast_free(gw);
|
|
}
|
|
return NULL;
|
|
}
|
|
ast_sockaddr_to_sin(&tmp, &gw->addr);
|
|
}
|
|
}
|
|
} else if (!strcasecmp(v->name, "defaultip")) {
|
|
struct ast_sockaddr tmp;
|
|
|
|
ast_sockaddr_from_sin(&tmp, &gw->defaddr);
|
|
if (ast_get_ip(&tmp, v->value)) {
|
|
if (!gw_reload) {
|
|
ast_mutex_destroy(&gw->msgs_lock);
|
|
ast_free(gw);
|
|
}
|
|
return NULL;
|
|
}
|
|
ast_sockaddr_to_sin(&tmp, &gw->defaddr);
|
|
} else if (!strcasecmp(v->name, "permit") ||
|
|
!strcasecmp(v->name, "deny")) {
|
|
gw->ha = ast_append_ha(v->name, v->value, gw->ha, NULL);
|
|
} else if (!strcasecmp(v->name, "port")) {
|
|
gw->addr.sin_port = htons(atoi(v->value));
|
|
} else if (!strcasecmp(v->name, "context")) {
|
|
ast_copy_string(context, v->value, sizeof(context));
|
|
} 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, "ncs")) {
|
|
ncs = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "hangupongateremove")) {
|
|
hangupongateremove = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "pktcgatealloc")) {
|
|
pktcgatealloc = 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")) {
|
|
ast_copy_string(language, v->value, sizeof(language));
|
|
} else if (!strcasecmp(v->name, "accountcode")) {
|
|
ast_copy_string(accountcode, v->value, sizeof(accountcode));
|
|
} 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, "setvar")) {
|
|
chanvars = add_var(v->value, chanvars);
|
|
} else if (!strcasecmp(v->name, "clearvars")) {
|
|
if (chanvars) {
|
|
ast_variables_destroy(chanvars);
|
|
chanvars = NULL;
|
|
}
|
|
} else if (!strcasecmp(v->name, "musiconhold")) {
|
|
ast_copy_string(musicclass, v->value, sizeof(musicclass));
|
|
} else if (!strcasecmp(v->name, "parkinglot")) {
|
|
ast_copy_string(parkinglot, v->value, sizeof(parkinglot));
|
|
} 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, "directmedia") || !strcasecmp(v->name, "canreinvite")) {
|
|
directmedia = ast_true(v->value);
|
|
} else if (!strcasecmp(v->name, "mailbox")) {
|
|
ast_copy_string(mailbox, v->value, sizeof(mailbox));
|
|
} else if (!strcasecmp(v->name, "hasvoicemail")) {
|
|
if (ast_true(v->value) && ast_strlen_zero(mailbox)) {
|
|
ast_copy_string(mailbox, gw->name, sizeof(mailbox));
|
|
}
|
|
} 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")) {
|
|
/* locate existing endpoint */
|
|
for (e = gw->endpoints; e; e = e->next) {
|
|
if (!strcasecmp(v->value, e->name)) {
|
|
/* endpoint already exists */
|
|
e->delme = 0;
|
|
ep_reload = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!e) {
|
|
/* Allocate wildcard endpoint */
|
|
e = ast_calloc(1, sizeof(*e));
|
|
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);
|
|
e->cap = ast_format_cap_alloc_nolock();
|
|
ast_copy_string(e->name, v->value, sizeof(e->name));
|
|
e->needaudit = 1;
|
|
}
|
|
ast_copy_string(gw->wcardep, v->value, sizeof(gw->wcardep));
|
|
/* XXX Should we really check for uniqueness?? XXX */
|
|
ast_copy_string(e->accountcode, accountcode, sizeof(e->accountcode));
|
|
ast_copy_string(e->context, context, sizeof(e->context));
|
|
ast_copy_string(e->cid_num, cid_num, sizeof(e->cid_num));
|
|
ast_copy_string(e->cid_name, cid_name, sizeof(e->cid_name));
|
|
ast_copy_string(e->language, language, sizeof(e->language));
|
|
ast_copy_string(e->musicclass, musicclass, sizeof(e->musicclass));
|
|
ast_copy_string(e->mailbox, mailbox, sizeof(e->mailbox));
|
|
ast_copy_string(e->parkinglot, parkinglot, sizeof(e->parkinglot));
|
|
if (!ast_strlen_zero(e->mailbox)) {
|
|
char *mbox, *cntx;
|
|
cntx = mbox = ast_strdupa(e->mailbox);
|
|
strsep(&cntx, "@");
|
|
if (ast_strlen_zero(cntx)) {
|
|
cntx = "default";
|
|
}
|
|
e->mwi_event_sub = ast_event_subscribe(AST_EVENT_MWI, mwi_event_cb, "MGCP MWI subscription", NULL,
|
|
AST_EVENT_IE_MAILBOX, AST_EVENT_IE_PLTYPE_STR, mbox,
|
|
AST_EVENT_IE_CONTEXT, AST_EVENT_IE_PLTYPE_STR, cntx,
|
|
AST_EVENT_IE_NEWMSGS, AST_EVENT_IE_PLTYPE_EXISTS,
|
|
AST_EVENT_IE_END);
|
|
}
|
|
snprintf(e->rqnt_ident, sizeof(e->rqnt_ident), "%08lx", ast_random());
|
|
e->msgstate = -1;
|
|
e->amaflags = amaflags;
|
|
ast_format_cap_copy(e->cap, global_capability);
|
|
e->parent = gw;
|
|
e->ncs = ncs;
|
|
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->directmedia = directmedia;
|
|
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;
|
|
e->chanvars = copy_vars(chanvars);
|
|
if (!ep_reload) {
|
|
/*snprintf(txident, sizeof(txident), "%08lx", ast_random());*/
|
|
for (i = 0; i < MAX_SUBS; i++) {
|
|
sub = ast_calloc(1, sizeof(*sub));
|
|
if (sub) {
|
|
ast_verb(3, "Allocating subchannel '%d' on %s@%s\n", i, e->name, gw->name);
|
|
ast_mutex_init(&sub->lock);
|
|
ast_mutex_init(&sub->cx_queue_lock);
|
|
sub->parent = e;
|
|
sub->id = i;
|
|
snprintf(sub->txident, sizeof(sub->txident), "%08lx", ast_random());
|
|
/*stnrcpy(sub->txident, txident, sizeof(sub->txident) - 1);*/
|
|
sub->cxmode = MGCP_CX_INACTIVE;
|
|
sub->nat = nat;
|
|
sub->gate = NULL;
|
|
sub->sdpsent = 0;
|
|
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\n");
|
|
return NULL;
|
|
}
|
|
}
|
|
/* Make out subs a circular linked list so we can always sping through the whole bunch */
|
|
/* find the end of the list */
|
|
for (sub = e->sub; sub && 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")) {
|
|
|
|
/* locate existing endpoint */
|
|
for (e = gw->endpoints; e; e = e->next) {
|
|
if (!strcasecmp(v->value, e->name)) {
|
|
/* endpoint already exists */
|
|
e->delme = 0;
|
|
ep_reload = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!e) {
|
|
e = ast_calloc(1, sizeof(*e));
|
|
ep_reload = 0;
|
|
}
|
|
|
|
if (e) {
|
|
if (!ep_reload) {
|
|
ast_mutex_init(&e->lock);
|
|
ast_mutex_init(&e->rqnt_queue_lock);
|
|
ast_mutex_init(&e->cmd_queue_lock);
|
|
e->cap = ast_format_cap_alloc_nolock();
|
|
ast_copy_string(e->name, v->value, sizeof(e->name));
|
|
e->needaudit = 1;
|
|
}
|
|
/* XXX Should we really check for uniqueness?? XXX */
|
|
ast_copy_string(e->accountcode, accountcode, sizeof(e->accountcode));
|
|
ast_copy_string(e->context, context, sizeof(e->context));
|
|
ast_copy_string(e->cid_num, cid_num, sizeof(e->cid_num));
|
|
ast_copy_string(e->cid_name, cid_name, sizeof(e->cid_name));
|
|
ast_copy_string(e->language, language, sizeof(e->language));
|
|
ast_copy_string(e->musicclass, musicclass, sizeof(e->musicclass));
|
|
ast_copy_string(e->mailbox, mailbox, sizeof(e->mailbox));
|
|
ast_copy_string(e->parkinglot, parkinglot, sizeof(e->parkinglot));
|
|
if (!ast_strlen_zero(mailbox)) {
|
|
ast_verb(3, "Setting mailbox '%s' on %s@%s\n", mailbox, gw->name, e->name);
|
|
}
|
|
if (!ep_reload) {
|
|
/* XXX potential issue due to reload */
|
|
e->msgstate = -1;
|
|
e->parent = gw;
|
|
}
|
|
e->amaflags = amaflags;
|
|
ast_format_cap_copy(e->cap, global_capability);
|
|
e->dtmfmode = dtmfmode;
|
|
e->ncs = ncs;
|
|
e->pktcgatealloc = pktcgatealloc;
|
|
e->hangupongateremove = hangupongateremove;
|
|
e->adsi = adsi;
|
|
e->type = (!strcasecmp(v->name, "trunk")) ? TYPE_TRUNK : TYPE_LINE;
|
|
e->immediate = immediate;
|
|
e->callgroup=cur_callergroup;
|
|
e->pickupgroup=cur_pickupgroup;
|
|
e->callreturn = callreturn;
|
|
e->cancallforward = cancallforward;
|
|
e->directmedia = directmedia;
|
|
e->singlepath = singlepath;
|
|
e->callwaiting = callwaiting;
|
|
e->hascallwaiting = callwaiting;
|
|
e->slowsequence = slowsequence;
|
|
e->transfer = transfer;
|
|
e->threewaycalling = threewaycalling;
|
|
|
|
/* If we already have a valid chanvars, it's not a new endpoint (it's a reload),
|
|
so first, free previous mem
|
|
*/
|
|
if (e->chanvars) {
|
|
ast_variables_destroy(e->chanvars);
|
|
e->chanvars = NULL;
|
|
}
|
|
e->chanvars = copy_vars(chanvars);
|
|
|
|
if (!ep_reload) {
|
|
e->onhooktime = time(NULL);
|
|
/* ASSUME we're onhook */
|
|
e->hookstate = MGCP_ONHOOK;
|
|
snprintf(e->rqnt_ident, sizeof(e->rqnt_ident), "%08lx", ast_random());
|
|
}
|
|
|
|
for (i = 0, sub = NULL; i < MAX_SUBS; i++) {
|
|
if (!ep_reload) {
|
|
sub = ast_calloc(1, sizeof(*sub));
|
|
} else {
|
|
if (!sub) {
|
|
sub = e->sub;
|
|
} else {
|
|
sub = sub->next;
|
|
}
|
|
}
|
|
|
|
if (sub) {
|
|
if (!ep_reload) {
|
|
ast_verb(3, "Allocating subchannel '%d' on %s@%s\n", i, e->name, gw->name);
|
|
ast_mutex_init(&sub->lock);
|
|
ast_mutex_init(&sub->cx_queue_lock);
|
|
ast_copy_string(sub->magic, MGCP_SUBCHANNEL_MAGIC, sizeof(sub->magic));
|
|
sub->parent = e;
|
|
sub->id = i;
|
|
snprintf(sub->txident, sizeof(sub->txident), "%08lx", ast_random());
|
|
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\n");
|
|
return NULL;
|
|
}
|
|
}
|
|
if (!ep_reload) {
|
|
/* Make out subs a circular linked list so we can always sping through the whole bunch */
|
|
/* find the end of the list */
|
|
for (sub = e->sub; sub && 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, "name") || !strcasecmp(v->name, "lines")) {
|
|
/* just eliminate realtime warnings */
|
|
} else {
|
|
ast_log(LOG_WARNING, "Don't know keyword '%s' at line %d\n", v->name, v->lineno);
|
|
}
|
|
}
|
|
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);
|
|
ast_free(gw);
|
|
}
|
|
|
|
/* Return NULL */
|
|
gw_reload = 1;
|
|
} else {
|
|
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);
|
|
}
|
|
{
|
|
struct ast_sockaddr tmp1, tmp2;
|
|
struct sockaddr_in tmp3 = {0,};
|
|
|
|
tmp3.sin_addr = gw->ourip;
|
|
ast_sockaddr_from_sin(&tmp1, &gw->addr);
|
|
ast_sockaddr_from_sin(&tmp2, &tmp3);
|
|
if (gw->addr.sin_addr.s_addr && ast_ouraddrfor(&tmp1, &tmp2)) {
|
|
memcpy(&gw->ourip, &__ourip, sizeof(gw->ourip));
|
|
} else {
|
|
ast_sockaddr_to_sin(&tmp2, &tmp3);
|
|
gw->ourip = tmp3.sin_addr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (chanvars) {
|
|
ast_variables_destroy(chanvars);
|
|
chanvars = NULL;
|
|
}
|
|
return (gw_reload ? NULL : gw);
|
|
}
|
|
|
|
static enum ast_rtp_glue_result mgcp_get_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance **instance)
|
|
{
|
|
struct mgcp_subchannel *sub = NULL;
|
|
|
|
if (!(sub = chan->tech_pvt) || !(sub->rtp))
|
|
return AST_RTP_GLUE_RESULT_FORBID;
|
|
|
|
*instance = sub->rtp ? ao2_ref(sub->rtp, +1), sub->rtp : NULL;
|
|
|
|
if (sub->parent->directmedia)
|
|
return AST_RTP_GLUE_RESULT_REMOTE;
|
|
else
|
|
return AST_RTP_GLUE_RESULT_LOCAL;
|
|
}
|
|
|
|
static int mgcp_set_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance *rtp, struct ast_rtp_instance *vrtp, struct ast_rtp_instance *trtp, const struct ast_format_cap *cap, int nat_active)
|
|
{
|
|
/* XXX Is there such thing as video support with MGCP? XXX */
|
|
struct mgcp_subchannel *sub;
|
|
sub = chan->tech_pvt;
|
|
if (sub && !sub->alreadygone) {
|
|
transmit_modify_with_sdp(sub, rtp, cap);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void mgcp_get_codec(struct ast_channel *chan, struct ast_format_cap *result)
|
|
{
|
|
struct mgcp_subchannel *sub = chan->tech_pvt;
|
|
struct mgcp_endpoint *p = sub->parent;
|
|
ast_format_cap_copy(result, p->cap);
|
|
}
|
|
|
|
static struct ast_rtp_glue mgcp_rtp_glue = {
|
|
.type = "MGCP",
|
|
.get_rtp_info = mgcp_get_rtp_peer,
|
|
.update_peer = mgcp_set_rtp_peer,
|
|
.get_codec = mgcp_get_codec,
|
|
};
|
|
|
|
|
|
static int acf_channel_read(struct ast_channel *chan, const char *funcname, char *args, char *buf, size_t buflen)
|
|
{
|
|
struct mgcp_subchannel *sub = chan->tech_pvt;
|
|
int res = 0;
|
|
|
|
/* Sanity check */
|
|
if (!chan || chan->tech != &mgcp_tech) {
|
|
ast_log(LOG_ERROR, "This function requires a valid MGCP channel\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!strcasecmp(args, "ncs")) {
|
|
snprintf(buf, buflen, "%s", sub->parent->ncs ? "yes":"no");
|
|
} else {
|
|
res = -1;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
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_instance_destroy(sub->rtp);
|
|
sub->rtp = NULL;
|
|
}
|
|
memset(sub->magic, 0, sizeof(sub->magic));
|
|
mgcp_queue_hangup(sub);
|
|
dump_cmd_queues(NULL, sub);
|
|
if(sub->gate) {
|
|
sub->gate->tech_pvt = NULL;
|
|
sub->gate->got_dq_gi = NULL;
|
|
sub->gate->gate_remove = NULL;
|
|
sub->gate->gate_open = NULL;
|
|
}
|
|
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);
|
|
ast_free(s);
|
|
}
|
|
|
|
if (e->mwi_event_sub)
|
|
ast_event_unsubscribe(e->mwi_event_sub);
|
|
|
|
if (e->chanvars) {
|
|
ast_variables_destroy(e->chanvars);
|
|
e->chanvars = NULL;
|
|
}
|
|
|
|
ast_mutex_destroy(&e->lock);
|
|
ast_mutex_destroy(&e->rqnt_queue_lock);
|
|
ast_mutex_destroy(&e->cmd_queue_lock);
|
|
e->cap = ast_format_cap_destroy(e->cap);
|
|
ast_free(e);
|
|
}
|
|
|
|
static void destroy_gateway(struct mgcp_gateway *g)
|
|
{
|
|
if (g->ha)
|
|
ast_free_ha(g->ha);
|
|
|
|
dump_queue(g, NULL);
|
|
|
|
ast_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 (!g->realtime && (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 struct ast_variable *add_var(const char *buf, struct ast_variable *list)
|
|
{
|
|
struct ast_variable *tmpvar = NULL;
|
|
char *varname = ast_strdupa(buf), *varval = NULL;
|
|
|
|
if ((varval = strchr(varname, '='))) {
|
|
*varval++ = '\0';
|
|
if ((tmpvar = ast_variable_new(varname, varval, ""))) {
|
|
tmpvar->next = list;
|
|
list = tmpvar;
|
|
}
|
|
}
|
|
return list;
|
|
}
|
|
|
|
/*! \brief
|
|
* duplicate a list of channel variables, \return the copy.
|
|
*/
|
|
static struct ast_variable *copy_vars(struct ast_variable *src)
|
|
{
|
|
struct ast_variable *res = NULL, *tmp, *v = NULL;
|
|
|
|
for (v = src ; v ; v = v->next) {
|
|
if ((tmp = ast_variable_new(v->name, v->value, v->file))) {
|
|
tmp->next = res;
|
|
res = tmp;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
static int reload_config(int reload)
|
|
{
|
|
struct ast_config *cfg;
|
|
struct ast_variable *v;
|
|
struct mgcp_gateway *g;
|
|
struct mgcp_endpoint *e;
|
|
char *cat;
|
|
struct ast_hostent ahp;
|
|
struct hostent *hp;
|
|
struct ast_format format;
|
|
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
|
|
|
|
if (gethostname(ourhost, sizeof(ourhost)-1)) {
|
|
ast_log(LOG_WARNING, "Unable to get hostname, MGCP disabled\n");
|
|
return 0;
|
|
}
|
|
cfg = ast_config_load(config, config_flags);
|
|
|
|
/* 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;
|
|
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
|
|
return 0;
|
|
} else if (cfg == CONFIG_STATUS_FILEINVALID) {
|
|
ast_log(LOG_ERROR, "Config file %s is in an invalid format. Aborting.\n", config);
|
|
return 0;
|
|
}
|
|
|
|
memset(&bindaddr, 0, sizeof(bindaddr));
|
|
dtmfmode = 0;
|
|
|
|
/* Copy the default jb config over global_jbconf */
|
|
memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
|
|
|
|
for (v = ast_variable_browse(cfg, "general"); v; v = v->next) {
|
|
/* handle jb conf */
|
|
if (!ast_jb_read_conf(&global_jbconf, v->name, v->value)) {
|
|
continue;
|
|
}
|
|
|
|
/* Create the interface list */
|
|
if (!strcasecmp(v->name, "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")) {
|
|
ast_getformatbyname(v->value, &format);
|
|
if (!format.id) {
|
|
ast_log(LOG_WARNING, "Cannot allow unknown format '%s'\n", v->value);
|
|
} else {
|
|
ast_format_cap_add(global_capability, &format);
|
|
}
|
|
} else if (!strcasecmp(v->name, "disallow")) {
|
|
ast_getformatbyname(v->value, &format);
|
|
if (!format.id) {
|
|
ast_log(LOG_WARNING, "Cannot allow unknown format '%s'\n", v->value);
|
|
} else {
|
|
ast_format_cap_remove(global_capability, &format);
|
|
}
|
|
} else if (!strcasecmp(v->name, "tos")) {
|
|
if (ast_str2tos(v->value, &qos.tos)) {
|
|
ast_log(LOG_WARNING, "Invalid tos value at line %d, refer to QoS documentation\n", v->lineno);
|
|
}
|
|
} else if (!strcasecmp(v->name, "tos_audio")) {
|
|
if (ast_str2tos(v->value, &qos.tos_audio))
|
|
ast_log(LOG_WARNING, "Invalid tos_audio value at line %d, refer to QoS documentation\n", v->lineno);
|
|
} else if (!strcasecmp(v->name, "cos")) {
|
|
if (ast_str2cos(v->value, &qos.cos))
|
|
ast_log(LOG_WARNING, "Invalid cos value at line %d, refer to QoS documentation\n", v->lineno);
|
|
} else if (!strcasecmp(v->name, "cos_audio")) {
|
|
if (ast_str2cos(v->value, &qos.cos_audio))
|
|
ast_log(LOG_WARNING, "Invalid cos_audio value at line %d, refer to QoS documentation\n", v->lineno);
|
|
} else if (!strcasecmp(v->name, "port")) {
|
|
if (sscanf(v->value, "%5d", &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);
|
|
}
|
|
} else if (!strcasecmp(v->name, "firstdigittimeout")) {
|
|
firstdigittimeout = atoi(v->value);
|
|
} else if (!strcasecmp(v->name, "gendigittimeout")) {
|
|
gendigittimeout = atoi(v->value);
|
|
} else if (!strcasecmp(v->name, "matchdigittimeout")) {
|
|
matchdigittimeout = atoi(v->value);
|
|
}
|
|
}
|
|
|
|
/* mark existing entries for deletion */
|
|
ast_mutex_lock(&gatelock);
|
|
for (g = gateways; g; g = g->next) {
|
|
g->delme = 1;
|
|
for (e = g->endpoints; e; e = e->next) {
|
|
e->delme = 1;
|
|
}
|
|
}
|
|
ast_mutex_unlock(&gatelock);
|
|
|
|
for (cat = ast_category_browse(cfg, NULL); cat; cat = ast_category_browse(cfg, cat)) {
|
|
if (strcasecmp(cat, "general")) {
|
|
ast_mutex_lock(&gatelock);
|
|
if ((g = build_gateway(cat, ast_variable_browse(cfg, cat)))) {
|
|
ast_verb(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);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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 = htons(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(bindaddr.sin_addr), ntohs(bindaddr.sin_port),
|
|
strerror(errno));
|
|
close(mgcpsock);
|
|
mgcpsock = -1;
|
|
} else {
|
|
ast_verb(2, "MGCP Listening on %s:%d\n",
|
|
ast_inet_ntoa(bindaddr.sin_addr), ntohs(bindaddr.sin_port));
|
|
ast_netsock_set_qos(mgcpsock, qos.tos, qos.cos, "MGCP");
|
|
}
|
|
}
|
|
ast_mutex_unlock(&netlock);
|
|
ast_config_destroy(cfg);
|
|
|
|
/* send audit only to the new endpoints */
|
|
for (g = gateways; g; g = g->next) {
|
|
for (e = g->endpoints; e && e->needaudit; e = e->next) {
|
|
e->needaudit = 0;
|
|
transmit_audit_endpoint(e);
|
|
ast_verb(3, "MGCP Auditing endpoint %s@%s for hookstate\n", e->name, g->name);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief load_module: PBX load module - initialization ---*/
|
|
static int load_module(void)
|
|
{
|
|
struct ast_format tmpfmt;
|
|
|
|
if (!(global_capability = ast_format_cap_alloc())) {
|
|
return AST_MODULE_LOAD_FAILURE;
|
|
}
|
|
if (!(mgcp_tech.capabilities = ast_format_cap_alloc())) {
|
|
return AST_MODULE_LOAD_FAILURE;
|
|
}
|
|
ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ULAW, 0));
|
|
ast_format_cap_add(mgcp_tech.capabilities, ast_format_set(&tmpfmt, AST_FORMAT_ULAW, 0));
|
|
ast_format_cap_add(mgcp_tech.capabilities, ast_format_set(&tmpfmt, AST_FORMAT_ALAW, 0));
|
|
if (!(sched = ast_sched_context_create())) {
|
|
ast_log(LOG_WARNING, "Unable to create schedule context\n");
|
|
return AST_MODULE_LOAD_FAILURE;
|
|
}
|
|
|
|
if (!(io = io_context_create())) {
|
|
ast_log(LOG_WARNING, "Unable to create I/O context\n");
|
|
ast_sched_context_destroy(sched);
|
|
return AST_MODULE_LOAD_FAILURE;
|
|
}
|
|
|
|
if (reload_config(0))
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
|
|
/* Make sure we can register our mgcp channel type */
|
|
if (ast_channel_register(&mgcp_tech)) {
|
|
ast_log(LOG_ERROR, "Unable to register channel class 'MGCP'\n");
|
|
io_context_destroy(io);
|
|
ast_sched_context_destroy(sched);
|
|
return AST_MODULE_LOAD_FAILURE;
|
|
}
|
|
|
|
ast_rtp_glue_register(&mgcp_rtp_glue);
|
|
ast_cli_register_multiple(cli_mgcp, sizeof(cli_mgcp) / sizeof(struct ast_cli_entry));
|
|
|
|
/* And start the monitor for the first time */
|
|
restart_monitor();
|
|
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
static char *mgcp_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
|
{
|
|
static int deprecated = 0;
|
|
|
|
if (e) {
|
|
switch (cmd) {
|
|
case CLI_INIT:
|
|
e->command = "mgcp reload";
|
|
e->usage =
|
|
"Usage: mgcp reload\n"
|
|
" 'mgcp reload' is deprecated. Please use 'reload chan_mgcp.so' instead.\n";
|
|
return NULL;
|
|
case CLI_GENERATE:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
if (!deprecated && a && a->argc > 0) {
|
|
ast_log(LOG_WARNING, "'mgcp reload' is deprecated. Please use 'reload chan_mgcp.so' instead.\n");
|
|
deprecated = 1;
|
|
}
|
|
|
|
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 CLI_SUCCESS;
|
|
}
|
|
|
|
static int reload(void)
|
|
{
|
|
mgcp_reload(NULL, 0, NULL);
|
|
return 0;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
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(NULL, 0, NULL);
|
|
return -1;
|
|
}
|
|
|
|
if (!ast_mutex_lock(&gatelock)) {
|
|
for (g = gateways; g; g = g->next) {
|
|
g->delme = 1;
|
|
for (e = g->endpoints; e; e = e->next) {
|
|
e->delme = 1;
|
|
}
|
|
}
|
|
|
|
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(NULL, 0, NULL);
|
|
return -1;
|
|
}
|
|
|
|
close(mgcpsock);
|
|
ast_rtp_glue_unregister(&mgcp_rtp_glue);
|
|
ast_cli_unregister_multiple(cli_mgcp, sizeof(cli_mgcp) / sizeof(struct ast_cli_entry));
|
|
ast_sched_context_destroy(sched);
|
|
|
|
global_capability = ast_format_cap_destroy(global_capability);
|
|
mgcp_tech.capabilities = ast_format_cap_destroy(mgcp_tech.capabilities);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Media Gateway Control Protocol (MGCP)",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.reload = reload,
|
|
.load_pri = AST_MODPRI_CHANNEL_DRIVER,
|
|
.nonoptreq = "res_pktccops",
|
|
);
|