chan_mgcp.c File Reference

Implementation of Media Gateway Control Protocol. More...

#include "asterisk.h"
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <fcntl.h>
#include <netdb.h>
#include <sys/signal.h>
#include <signal.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <arpa/inet.h>
#include <ctype.h>
#include "asterisk/lock.h"
#include "asterisk/channel.h"
#include "asterisk/config.h"
#include "asterisk/module.h"
#include "asterisk/pbx.h"
#include "asterisk/sched.h"
#include "asterisk/io.h"
#include "asterisk/rtp.h"
#include "asterisk/acl.h"
#include "asterisk/callerid.h"
#include "asterisk/cli.h"
#include "asterisk/say.h"
#include "asterisk/cdr.h"
#include "asterisk/astdb.h"
#include "asterisk/features.h"
#include "asterisk/app.h"
#include "asterisk/musiconhold.h"
#include "asterisk/utils.h"
#include "asterisk/netsock.h"
#include "asterisk/causes.h"
#include "asterisk/dsp.h"
#include "asterisk/devicestate.h"
#include "asterisk/stringfields.h"
#include "asterisk/abstract_jb.h"
#include "asterisk/event.h"

Include dependency graph for chan_mgcp.c:

Go to the source code of this file.

Data Structures
struct	mgcp_endpoint
struct	mgcp_gateway
struct	mgcp_message
	mgcp_message: MGCP message for queuing up More...
struct	mgcp_request
struct	mgcp_response
struct	mgcp_subchannel
Defines
#define	CANREINVITE   1
#define	DEFAULT_EXPIRY   120
#define	DEFAULT_MGCP_CA_PORT   2727
#define	DEFAULT_MGCP_GW_PORT   2427
#define	DEFAULT_RETRANS   1000
#define	INADDR_NONE   (in_addr_t)(-1)
#define	MAX_EXPIRY   3600
#define	MAX_RETRANS   5
#define	MAX_SUBS   2
#define	MGCP_CX_CONF   3
#define	MGCP_CX_CONFERENCE   3
#define	MGCP_CX_INACTIVE   4
#define	MGCP_CX_MUTE   4
#define	MGCP_CX_RECVONLY   1
#define	MGCP_CX_SENDONLY   0
#define	MGCP_CX_SENDRECV   2
#define	MGCP_DTMF_HYBRID   (1 << 2)
#define	MGCP_DTMF_INBAND   (1 << 1)
#define	MGCP_DTMF_RFC2833   (1 << 0)
#define	MGCP_MAX_HEADERS   64
#define	MGCP_MAX_LINES   64
#define	MGCP_MAX_PACKET   1500
#define	MGCP_OFFHOOK   2
#define	MGCP_ONHOOK   1
#define	MGCP_SUBCHANNEL_MAGIC   "!978!"
#define	MGCPDUMPER
#define	RESPONSE_TIMEOUT   30
#define	SUB_ALT   1
#define	SUB_REAL   0
#define	TYPE_LINE   2
#define	TYPE_TRUNK   1
Enumerations
enum	{   MGCP_CMD_EPCF, MGCP_CMD_CRCX, MGCP_CMD_MDCX, MGCP_CMD_DLCX,   MGCP_CMD_RQNT, MGCP_CMD_NTFY, MGCP_CMD_AUEP, MGCP_CMD_AUCX,   MGCP_CMD_RSIP }
Functions
static char *	__get_header (struct mgcp_request *req, char *name, int *start)
static int	__mgcp_xmit (struct mgcp_gateway *gw, char *data, int len)
static void	__reg_module (void)
static void	__unreg_module (void)
static int	add_header (struct mgcp_request *req, char *var, char *value)
static void	add_header_offhook (struct mgcp_subchannel *sub, struct mgcp_request *resp)
static int	add_line (struct mgcp_request *req, char *line)
static int	add_sdp (struct mgcp_request *resp, struct mgcp_subchannel *sub, struct ast_rtp *rtp)
static int	attempt_transfer (struct mgcp_endpoint *p)
static struct mgcp_gateway *	build_gateway (char *cat, struct ast_variable *v)
	build_gateway: parse mgcp.conf and create gateway/endpoint structures
static char *	control2str (int ind)
static void	destroy_endpoint (struct mgcp_endpoint *e)
static void	destroy_gateway (struct mgcp_gateway *g)
static void *	do_monitor (void *data)
static void	dump_cmd_queues (struct mgcp_endpoint *p, struct mgcp_subchannel *sub)
	dump_cmd_queues: (SC:) cleanup pending commands
static void	dump_queue (struct mgcp_gateway *gw, struct mgcp_endpoint *p)
static int	find_and_retrans (struct mgcp_subchannel *sub, struct mgcp_request *req)
static struct mgcp_request *	find_command (struct mgcp_endpoint *p, struct mgcp_subchannel *sub, struct mgcp_request **queue, ast_mutex_t *l, int ident)
	find_command: (SC:) remove command transaction from queue
static struct mgcp_subchannel *	find_subchannel_and_lock (char *name, int msgid, struct sockaddr_in *sin)
static char *	get_csv (char *c, int *len, char **next)
	get_csv: (SC:) get comma separated value
static char *	get_header (struct mgcp_request *req, char *name)
static char *	get_sdp (struct mgcp_request *req, char *name)
static char *	get_sdp_by_line (char *line, char *name, int nameLen)
static char *	get_sdp_iterate (int *iterator, struct mgcp_request *req, char *name)
static void	handle_hd_hf (struct mgcp_subchannel *sub, char *ev)
static char *	handle_mgcp_audit_endpoint (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	handle_mgcp_set_debug (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	handle_mgcp_set_debug_deprecated (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	handle_mgcp_show_endpoints (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static int	handle_request (struct mgcp_subchannel *sub, struct mgcp_request *req, struct sockaddr_in *sin)
static void	handle_response (struct mgcp_endpoint *p, struct mgcp_subchannel *sub, int result, unsigned int ident, struct mgcp_request *resp)
static int	has_voicemail (struct mgcp_endpoint *p)
static int	init_req (struct mgcp_endpoint *p, struct mgcp_request *req, char *verb)
static int	init_resp (struct mgcp_request *req, char *resp, struct mgcp_request *orig, char *resprest)
static int	load_module (void)
	load_module: PBX load module - initialization ---
static int	mgcp_answer (struct ast_channel *ast)
static int	mgcp_call (struct ast_channel *ast, char *dest, int timeout)
static int	mgcp_devicestate (void *data)
	mgcp_devicestate: channel callback for device status monitoring
static int	mgcp_fixup (struct ast_channel *oldchan, struct ast_channel *newchan)
static enum ast_rtp_get_result	mgcp_get_rtp_peer (struct ast_channel *chan, struct ast_rtp **rtp)
static int	mgcp_hangup (struct ast_channel *ast)
static int	mgcp_indicate (struct ast_channel *ast, int ind, const void *data, size_t datalen)
static struct ast_channel *	mgcp_new (struct mgcp_subchannel *sub, int state)
static int	mgcp_postrequest (struct mgcp_endpoint *p, struct mgcp_subchannel *sub, char *data, int len, unsigned int seqno)
static void	mgcp_queue_control (struct mgcp_subchannel *sub, int control)
static void	mgcp_queue_frame (struct mgcp_subchannel *sub, struct ast_frame *f)
static void	mgcp_queue_hangup (struct mgcp_subchannel *sub)
static struct ast_frame *	mgcp_read (struct ast_channel *ast)
static char *	mgcp_reload (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static struct ast_channel *	mgcp_request (const char *type, int format, void *data, int *cause)
static struct ast_frame *	mgcp_rtp_read (struct mgcp_subchannel *sub)
static int	mgcp_senddigit_begin (struct ast_channel *ast, char digit)
static int	mgcp_senddigit_end (struct ast_channel *ast, char digit, unsigned int duration)
static int	mgcp_set_rtp_peer (struct ast_channel *chan, struct ast_rtp *rtp, struct ast_rtp *vrtp, struct ast_rtp *trtp, int codecs, int nat_active)
static void *	mgcp_ss (void *data)
static int	mgcp_write (struct ast_channel *ast, struct ast_frame *frame)
static int	mgcpsock_read (int *id, int fd, short events, void *ignore)
static void	mwi_event_cb (const struct ast_event *event, void *userdata)
static void	parse (struct mgcp_request *req)
static int	process_sdp (struct mgcp_subchannel *sub, struct mgcp_request *req)
static void	prune_gateways (void)
static int	reload (void)
static int	reload_config (int reload)
static int	reqprep (struct mgcp_request *req, struct mgcp_endpoint *p, char *verb)
static int	resend_response (struct mgcp_subchannel *sub, struct mgcp_response *resp)
static int	respprep (struct mgcp_request *resp, struct mgcp_endpoint *p, char *msg, struct mgcp_request *req, char *msgrest)
static int	restart_monitor (void)
static int	retrans_pkt (const void *data)
static void	sdpLineNum_iterator_init (int *iterator)
static int	send_request (struct mgcp_endpoint *p, struct mgcp_subchannel *sub, struct mgcp_request *req, unsigned int seqno)
static int	send_response (struct mgcp_subchannel *sub, struct mgcp_request *req)
static void	start_rtp (struct mgcp_subchannel *sub)
static int	transmit_audit_endpoint (struct mgcp_endpoint *p)
static int	transmit_connect_with_sdp (struct mgcp_subchannel *sub, struct ast_rtp *rtp)
static int	transmit_connection_del (struct mgcp_subchannel *sub)
static int	transmit_connection_del_w_params (struct mgcp_endpoint *p, char *callid, char *cxident)
static int	transmit_modify_request (struct mgcp_subchannel *sub)
static int	transmit_modify_with_sdp (struct mgcp_subchannel *sub, struct ast_rtp *rtp, int codecs)
static int	transmit_notify_request (struct mgcp_subchannel *sub, char *tone)
static int	transmit_notify_request_with_callerid (struct mgcp_subchannel *sub, char *tone, char *callernum, char *callername)
static int	transmit_response (struct mgcp_subchannel *sub, char *msg, struct mgcp_request *req, char *msgrest)
static int	unalloc_sub (struct mgcp_subchannel *sub)
static int	unload_module (void)
Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Media Gateway Control Protocol (MGCP)" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, .reload = reload, }
static struct in_addr	__ourip
static char	accountcode [AST_MAX_ACCOUNT_CODE] = ""
static int	adsi = 0
static int	amaflags = 0
static struct ast_module_info *	ast_module_info = &__mod_info
static struct sockaddr_in	bindaddr
static int	callreturn = 0
static int	callwaiting = 0
static int	cancallforward = 0
static int	canreinvite = CANREINVITE
static int	capability = AST_FORMAT_ULAW
static char	cid_name [AST_MAX_EXTENSION] = ""
static char	cid_num [AST_MAX_EXTENSION] = ""
static struct ast_cli_entry	cli_mgcp []
static struct ast_cli_entry	cli_mgcp_set_debug_deprecated = AST_CLI_DEFINE(handle_mgcp_set_debug_deprecated, "Enable/Disable MGCP debugging")
static const char	config [] = "mgcp.conf"
static char	context [AST_MAX_EXTENSION] = "default"
static ast_group_t	cur_callergroup = 0
static ast_group_t	cur_pickupgroup = 0
static struct ast_jb_conf	default_jbconf
static int	dtmfmode = 0
static int	firstdigittimeout = 16000
static ast_mutex_t	gatelock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP )
	gatelock: mutex for gateway/endpoint lists
static struct mgcp_gateway *	gateways
static int	gendigittimeout = 8000
static struct ast_jb_conf	global_jbconf
static int	immediate = 0
static struct io_context *	io
static char	language [MAX_LANGUAGE] = ""
static char	mailbox [AST_MAX_EXTENSION]
static int	matchdigittimeout = 3000
static char *	mgcp_cxmodes []
static ast_mutex_t	mgcp_reload_lock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP )
static int	mgcp_reloading = 0
static struct ast_rtp_protocol	mgcp_rtp
static struct ast_channel_tech	mgcp_tech
static int	mgcpdebug = 0
static int	mgcpsock = -1
static int *	mgcpsock_read_id = NULL
static pthread_t	monitor_thread = AST_PTHREADT_NULL
static ast_mutex_t	monlock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP )
static char	musicclass [MAX_MUSICCLASS] = ""
static int	nat = 0
static ast_mutex_t	netlock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP )
static int	nonCodecCapability = AST_RTP_DTMF
static unsigned int	oseq
static char	ourhost [MAXHOSTNAMELEN]
static int	ourport
static char	parkinglot [AST_MAX_CONTEXT]
struct {
unsigned int   cos
unsigned int   cos_audio
unsigned int   tos
unsigned int   tos_audio
}	qos
static struct sched_context *	sched
static int	singlepath = 0
static int	slowsequence = 0
static const char	tdesc [] = "Media Gateway Control Protocol (MGCP)"
static int	threewaycalling = 0
static int	transfer = 0

---

Detailed Description

Implementation of Media Gateway Control Protocol.

Author:

Mark Spencer <markster@digium.com>

See also

• MGCP configuration

Definition in file chan_mgcp.c.

---

Define Documentation

#define CANREINVITE   1

Definition at line 83 of file chan_mgcp.c.

Referenced by build_gateway().

#define DEFAULT_EXPIRY   120

Definition at line 81 of file chan_mgcp.c.

#define DEFAULT_MGCP_CA_PORT   2727

From RFC 2705

Definition at line 108 of file chan_mgcp.c.

Referenced by reload_config().

#define DEFAULT_MGCP_GW_PORT   2427

From RFC 2705

Definition at line 107 of file chan_mgcp.c.

Referenced by build_gateway().

#define DEFAULT_RETRANS   1000

How frequently to retransmit

Definition at line 110 of file chan_mgcp.c.

Referenced by __sip_reliable_xmit(), mgcp_postrequest(), and retrans_pkt().

#define INADDR_NONE   (in_addr_t)(-1)

Definition at line 86 of file chan_mgcp.c.

Referenced by build_gateway().

#define MAX_EXPIRY   3600

Definition at line 82 of file chan_mgcp.c.

#define MAX_RETRANS   5

Try only 5 times for retransmissions

Definition at line 111 of file chan_mgcp.c.

Referenced by retrans_pkt().

#define MAX_SUBS   2

Definition at line 269 of file chan_mgcp.c.

Referenced by build_gateway(), destroy_endpoint(), reload_config(), and unistim_info().

#define MGCP_CX_CONF   3

Definition at line 117 of file chan_mgcp.c.

Referenced by handle_request().

#define MGCP_CX_CONFERENCE   3

Definition at line 118 of file chan_mgcp.c.

#define MGCP_CX_INACTIVE   4

Definition at line 120 of file chan_mgcp.c.

Referenced by build_gateway(), mgcp_hangup(), and unalloc_sub().

#define MGCP_CX_MUTE   4

Definition at line 119 of file chan_mgcp.c.

Referenced by handle_request().

#define MGCP_CX_RECVONLY   1

Definition at line 115 of file chan_mgcp.c.

Referenced by handle_request(), mgcp_call(), and mgcp_hangup().

#define MGCP_CX_SENDONLY   0

MGCP rtp stream modes {

Definition at line 114 of file chan_mgcp.c.

#define MGCP_CX_SENDRECV   2

Definition at line 116 of file chan_mgcp.c.

Referenced by handle_hd_hf(), handle_request(), mgcp_answer(), and mgcp_call().

#define MGCP_DTMF_HYBRID   (1 << 2)

Definition at line 105 of file chan_mgcp.c.

Referenced by add_header_offhook(), build_gateway(), mgcp_hangup(), mgcp_new(), mgcp_senddigit_begin(), mgcp_senddigit_end(), and mgcp_ss().

#define MGCP_DTMF_INBAND   (1 << 1)

Definition at line 104 of file chan_mgcp.c.

Referenced by add_header_offhook(), build_gateway(), mgcp_hangup(), mgcp_new(), mgcp_rtp_read(), mgcp_senddigit_begin(), mgcp_senddigit_end(), and mgcp_ss().

#define MGCP_DTMF_RFC2833   (1 << 0)

Definition at line 103 of file chan_mgcp.c.

Referenced by build_gateway(), mgcp_rtp_read(), mgcp_senddigit_begin(), and mgcp_senddigit_end().

#define MGCP_MAX_HEADERS   64

The private structures of the mgcp channels are linked for ! selecting outgoing channels

Definition at line 228 of file chan_mgcp.c.

Referenced by add_header(), init_req(), init_resp(), and parse().

#define MGCP_MAX_LINES   64

Definition at line 229 of file chan_mgcp.c.

Referenced by add_line(), and parse().

#define MGCP_MAX_PACKET   1500

Also from RFC 2543, should sub headers tho

Definition at line 109 of file chan_mgcp.c.

#define MGCP_OFFHOOK   2

Definition at line 303 of file chan_mgcp.c.

Referenced by handle_hd_hf(), handle_request(), handle_response(), mgcp_call(), mgcp_hangup(), transmit_modify_request(), transmit_notify_request(), and transmit_notify_request_with_callerid().

#define MGCP_ONHOOK   1

Definition at line 302 of file chan_mgcp.c.

Referenced by build_gateway(), do_monitor(), handle_request(), handle_response(), mgcp_call(), mgcp_hangup(), mgcp_request(), transmit_modify_request(), transmit_notify_request(), and transmit_notify_request_with_callerid().

#define MGCP_SUBCHANNEL_MAGIC   "!978!"

subchannel magic string. Needed to prove that any subchannel pointer passed by asterisk really points to a valid subchannel memory area. Ugly.. But serves the purpose for the time being.

Definition at line 280 of file chan_mgcp.c.

Referenced by build_gateway(), and mgcp_hangup().

#define MGCPDUMPER

Definition at line 80 of file chan_mgcp.c.

#define RESPONSE_TIMEOUT   30

in seconds

Definition at line 259 of file chan_mgcp.c.

Referenced by find_and_retrans().

#define SUB_ALT   1

Definition at line 272 of file chan_mgcp.c.

#define SUB_REAL   0

Definition at line 271 of file chan_mgcp.c.

#define TYPE_LINE   2

Definition at line 306 of file chan_mgcp.c.

Referenced by build_device(), build_gateway(), do_monitor(), and mgcp_call().

#define TYPE_TRUNK   1

Definition at line 305 of file chan_mgcp.c.

Referenced by build_device(), and build_gateway().

---

Enumeration Type Documentation

anonymous enum

Enumerator:

MGCP_CMD_EPCF
MGCP_CMD_CRCX
MGCP_CMD_MDCX
MGCP_CMD_DLCX
MGCP_CMD_RQNT
MGCP_CMD_NTFY
MGCP_CMD_AUEP
MGCP_CMD_AUCX
MGCP_CMD_RSIP

Definition at line 131 of file chan_mgcp.c.

     {
   MGCP_CMD_EPCF,
   MGCP_CMD_CRCX,
   MGCP_CMD_MDCX,
   MGCP_CMD_DLCX,
   MGCP_CMD_RQNT,
   MGCP_CMD_NTFY,
   MGCP_CMD_AUEP,
   MGCP_CMD_AUCX,
   MGCP_CMD_RSIP
};

---

Function Documentation

static char* __get_header	(	struct mgcp_request *	req,
		char *	name,
		int *	start
	)			[static]

Definition at line 1604 of file chan_mgcp.c.

References mgcp_request::header, mgcp_request::headers, and len().

Referenced by get_header().

{
   int x;
   int len = strlen(name);
   char *r;
   for (x=*start;x<req->headers;x++) {
      if (!strncasecmp(req->header[x], name, len) && 
          (req->header[x][len] == ':')) {
         r = req->header[x] + len + 1;
         while(*r && (*r < 33))
            r++;
         *start = x+1;
         return r;
      }
   }
   /* Don't return NULL, so get_header is always a valid pointer */
   return "";
}

static int __mgcp_xmit	(	struct mgcp_gateway *	gw,
		char *	data,
		int	len
	)			[static]

Definition at line 515 of file chan_mgcp.c.

References mgcp_gateway::addr, ast_log(), mgcp_gateway::defaddr, errno, and LOG_WARNING.

Referenced by mgcp_postrequest(), resend_response(), retrans_pkt(), and send_response().

{
   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 void __reg_module

(

void

)

[static]

Definition at line 4416 of file chan_mgcp.c.

static void __unreg_module

(

void

)

[static]

Definition at line 4416 of file chan_mgcp.c.

static int add_header	(	struct mgcp_request *	req,
		char *	var,
		char *	value
	)			[static]

Definition at line 1950 of file chan_mgcp.c.

References ast_log(), mgcp_request::data, mgcp_request::header, mgcp_request::headers, mgcp_request::len, mgcp_request::lines, LOG_WARNING, and MGCP_MAX_HEADERS.

Referenced by add_header_offhook(), transmit_audit_endpoint(), transmit_connect_with_sdp(), transmit_connection_del(), transmit_connection_del_w_params(), transmit_modify_request(), transmit_modify_with_sdp(), transmit_notify_request(), and transmit_notify_request_with_callerid().

{
   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 void add_header_offhook	(	struct mgcp_subchannel *	sub,
		struct mgcp_request *	resp
	)			[static]

Definition at line 2345 of file chan_mgcp.c.

References ast_channel::_state, add_header(), AST_STATE_RINGING, mgcp_endpoint::dtmfmode, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, mgcp_subchannel::owner, mgcp_subchannel::parent, and mgcp_endpoint::sub.

Referenced by transmit_modify_request(), transmit_notify_request(), and transmit_notify_request_with_callerid().

{
   struct mgcp_endpoint *p = sub->parent;

   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
      add_header(resp, "R", "L/hu(N),L/hf(N),D/[0-9#*](N)");
}

static int add_line	(	struct mgcp_request *	req,
		char *	line
	)			[static]

Definition at line 1972 of file chan_mgcp.c.

References ast_copy_string(), ast_log(), mgcp_request::data, mgcp_request::len, mgcp_request::line, mgcp_request::lines, LOG_WARNING, and MGCP_MAX_LINES.

Referenced by add_sdp().

{
   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 add_sdp	(	struct mgcp_request *	resp,
		struct mgcp_subchannel *	sub,
		struct ast_rtp *	rtp
	)			[static]

Definition at line 2073 of file chan_mgcp.c.

References add_line(), ast_copy_string(), AST_FORMAT_AUDIO_MASK, ast_inet_ntoa(), ast_log(), AST_RTP_DTMF, ast_rtp_get_peer(), ast_rtp_get_us(), ast_rtp_lookup_code(), ast_rtp_lookup_mime_subtype(), AST_RTP_MAX, ast_verbose, mgcp_endpoint::capability, len(), LOG_WARNING, mgcp_endpoint::nonCodecCapability, mgcp_gateway::ourip, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, s, and mgcp_subchannel::tmpdest.

Referenced by transmit_connect_with_sdp(), and transmit_modify_with_sdp().

{
   int len;
   int codec;
   char costr[80];
   struct sockaddr_in sin;
   char v[256];
   char s[256];
   char o[256];
   char c[256];
   char t[256];
   char m[256] = "";
   char a[1024] = "";
   int x;
   struct sockaddr_in dest;
   struct mgcp_endpoint *p = sub->parent;
   /* XXX We break with the "recommendation" and send our IP, in order that our
          peer doesn't have to ast_gethostbyname() us XXX */
   len = 0;
   if (!sub->rtp) {
      ast_log(LOG_WARNING, "No way to add SDP without an RTP structure\n");
      return -1;
   }
   ast_rtp_get_us(sub->rtp, &sin);
   if (rtp) {
      ast_rtp_get_peer(rtp, &dest);
   } else {
      if (sub->tmpdest.sin_addr.s_addr) {
         dest.sin_addr = sub->tmpdest.sin_addr;
         dest.sin_port = sub->tmpdest.sin_port;
         /* Reset temporary destination */
         memset(&sub->tmpdest, 0, sizeof(sub->tmpdest));
      } else {
         dest.sin_addr = p->parent->ourip;
         dest.sin_port = sin.sin_port;
      }
   }
   if (mgcpdebug) {
      ast_verbose("We're at %s port %d\n", ast_inet_ntoa(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));
   for (x = 1; x <= AST_FORMAT_AUDIO_MASK; x <<= 1) {
      if (p->capability & x) {
         if (mgcpdebug) {
            ast_verbose("Answering with capability %d\n", x);
         }
         codec = ast_rtp_lookup_code(sub->rtp, 1, x);
         if (codec > -1) {
            snprintf(costr, sizeof(costr), " %d", codec);
            strncat(m, costr, sizeof(m) - strlen(m) - 1);
            snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/8000\r\n", codec, ast_rtp_lookup_mime_subtype(1, x, 0));
            strncat(a, costr, sizeof(a) - strlen(a) - 1);
         }
      }
   }
   for (x = 1; x <= AST_RTP_MAX; x <<= 1) {
      if (p->nonCodecCapability & x) {
         if (mgcpdebug) {
            ast_verbose("Answering with non-codec capability %d\n", x);
         }
         codec = ast_rtp_lookup_code(sub->rtp, 0, x);
         if (codec > -1) {
            snprintf(costr, sizeof(costr), " %d", codec);
            strncat(m, costr, sizeof(m) - strlen(m) - 1);
            snprintf(costr, sizeof(costr), "a=rtpmap:%d %s/8000\r\n", codec, ast_rtp_lookup_mime_subtype(0, x, 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 attempt_transfer

(

struct mgcp_endpoint *

p

)

[static]

Definition at line 2910 of file chan_mgcp.c.

References ast_channel::_softhangup, ast_channel::_state, mgcp_subchannel::alreadygone, ast_bridged_channel(), ast_channel_masquerade(), AST_CONTROL_RINGING, AST_CONTROL_UNHOLD, ast_debug, ast_indicate(), ast_log(), ast_queue_control(), AST_SOFTHANGUP_DEV, AST_STATE_RINGING, ast_verb, mgcp_subchannel::id, LOG_WARNING, mgcp_queue_hangup(), mgcp_gateway::name, mgcp_endpoint::name, mgcp_subchannel::next, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_endpoint::sub, and unalloc_sub().

Referenced by handle_request().

{
   /* *************************
    * 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 struct mgcp_gateway* build_gateway	(	char *	cat,
		struct ast_variable *	v
	)			[static, read]

build_gateway: parse mgcp.conf and create gateway/endpoint structures

Definition at line 3578 of file chan_mgcp.c.

References __ourip, mgcp_endpoint::accountcode, mgcp_gateway::addr, mgcp_endpoint::adsi, mgcp_endpoint::amaflags, ast_append_ha(), ast_callerid_split(), ast_calloc, ast_cdr_amaflags2int(), ast_copy_string(), AST_EVENT_IE_CONTEXT, AST_EVENT_IE_END, AST_EVENT_IE_MAILBOX, AST_EVENT_IE_NEWMSGS, AST_EVENT_IE_PLTYPE_EXISTS, AST_EVENT_IE_PLTYPE_STR, AST_EVENT_MWI, ast_event_subscribe(), ast_free, ast_get_group(), ast_get_ip(), ast_log(), ast_mutex_destroy(), ast_mutex_init(), ast_ouraddrfor(), ast_random(), AST_SCHED_DEL, ast_strdupa, ast_strlen_zero(), ast_true(), ast_verb, mgcp_endpoint::callgroup, mgcp_endpoint::callreturn, mgcp_endpoint::callwaiting, mgcp_endpoint::cancallforward, mgcp_endpoint::canreinvite, CANREINVITE, mgcp_endpoint::capability, mgcp_endpoint::cid_name, mgcp_endpoint::cid_num, mgcp_endpoint::cmd_queue_lock, mgcp_endpoint::context, mgcp_subchannel::cx_queue_lock, mgcp_subchannel::cxmode, mgcp_gateway::defaddr, DEFAULT_MGCP_GW_PORT, mgcp_endpoint::delme, mgcp_gateway::delme, mgcp_endpoint::dtmfmode, mgcp_gateway::dynamic, mgcp_gateway::endpoints, mgcp_gateway::expire, gateways, mgcp_gateway::ha, mgcp_endpoint::hascallwaiting, mgcp_endpoint::hookstate, mgcp_subchannel::id, mgcp_endpoint::immediate, INADDR_NONE, mgcp_gateway::isnamedottedip, mgcp_endpoint::language, ast_variable::lineno, mgcp_subchannel::lock, mgcp_endpoint::lock, LOG_WARNING, mgcp_subchannel::magic, mgcp_endpoint::mailbox, MAX_SUBS, mbox(), MGCP_CX_INACTIVE, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, MGCP_DTMF_RFC2833, MGCP_ONHOOK, MGCP_SUBCHANNEL_MAGIC, mgcp_gateway::msgs_lock, mgcp_endpoint::msgstate, mgcp_endpoint::musicclass, mwi_event_cb(), mgcp_endpoint::mwi_event_sub, mgcp_endpoint::name, ast_variable::name, mgcp_gateway::name, mgcp_subchannel::nat, mgcp_endpoint::needaudit, ast_variable::next, mgcp_subchannel::next, mgcp_endpoint::next, mgcp_gateway::next, mgcp_endpoint::onhooktime, mgcp_gateway::ourip, mgcp_subchannel::parent, mgcp_endpoint::parent, mgcp_endpoint::parkinglot, mgcp_endpoint::pickupgroup, mgcp_gateway::retransid, mgcp_endpoint::rqnt_ident, mgcp_endpoint::rqnt_queue_lock, mgcp_subchannel::rtp, mgcp_endpoint::singlepath, mgcp_endpoint::slowsequence, strsep(), mgcp_endpoint::sub, mgcp_endpoint::threewaycalling, mgcp_endpoint::transfer, mgcp_subchannel::txident, mgcp_endpoint::type, TYPE_LINE, TYPE_TRUNK, ast_variable::value, and mgcp_gateway::wcardep.

Referenced by reload_config().

{
   struct mgcp_gateway *gw;
   struct mgcp_endpoint *e;
   struct mgcp_subchannel *sub;
   /*char txident[80];*/
   int i=0, y=0;
   int gw_reload = 0;
   int ep_reload = 0;
   canreinvite = CANREINVITE;

   /* locate existing gateway */
   gw = gateways;
   while (gw) {
      if (!strcasecmp(cat, gw->name)) {
         /* gateway already exists */
         gw->delme = 0;
         gw_reload = 1;
         break;
      }
      gw = gw->next;
   }

   if (!gw)
      gw = ast_calloc(1, sizeof(*gw));

   if (gw) {
      if (!gw_reload) {
         gw->expire = -1;
         gw->retransid = -1; /* SC */
         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;
      }
      while(v) {
         if (!strcasecmp(v->name, "host")) {
            if (!strcasecmp(v->value, "dynamic")) {
               /* They'll register with us */
               gw->dynamic = 1;
               memset(&gw->addr.sin_addr, 0, 4);
               if (gw->addr.sin_port) {
                  /* If we've already got a port, make it the default rather than absolute */
                  gw->defaddr.sin_port = gw->addr.sin_port;
                  gw->addr.sin_port = 0;
               }
            } else {
               /* Non-dynamic.  Make sure we become that way if we're not */
               AST_SCHED_DEL(sched, gw->expire);
               gw->dynamic = 0;
               if (ast_get_ip(&gw->addr, v->value)) {
                  if (!gw_reload) {
                     ast_mutex_destroy(&gw->msgs_lock);
                     ast_free(gw);
                  }
                  return NULL;
               }
            }
         } else if (!strcasecmp(v->name, "defaultip")) {
            if (ast_get_ip(&gw->defaddr, v->value)) {
               if (!gw_reload) {
                  ast_mutex_destroy(&gw->msgs_lock);
                  ast_free(gw);
               }
               return NULL;
            }
         } else if (!strcasecmp(v->name, "permit") ||
            !strcasecmp(v->name, "deny")) {
            gw->ha = ast_append_ha(v->name, v->value, gw->ha, 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, "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, "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, "canreinvite")) {
            canreinvite = 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 */
            e = gw->endpoints;
            while (e) {
               if (!strcasecmp(v->value, e->name)) {
                  /* endpoint already exists */
                  e->delme = 0;
                  ep_reload = 1;
                  break;
               }
               e = e->next;
            }

            if (!e) {
               /* Allocate wildcard endpoint */
               e = 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);
                  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, 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;
               e->capability = capability;
               e->parent = gw;
               e->dtmfmode = dtmfmode;
               if (!ep_reload && e->sub && e->sub->rtp)
                  e->dtmfmode |= MGCP_DTMF_INBAND;
               e->adsi = adsi;
               e->type = TYPE_LINE;
               e->immediate = immediate;
               e->callgroup=cur_callergroup;
               e->pickupgroup=cur_pickupgroup;
               e->callreturn = callreturn;
               e->cancallforward = cancallforward;
               e->singlepath = singlepath;
               e->canreinvite = canreinvite;
               e->callwaiting = callwaiting;
               e->hascallwaiting = callwaiting;
               e->slowsequence = slowsequence;
               e->transfer = transfer;
               e->threewaycalling = threewaycalling;
               e->onhooktime = time(NULL);
               /* ASSUME we're onhook */
               e->hookstate = MGCP_ONHOOK;
               if (!ep_reload) {
                  /*snprintf(txident, sizeof(txident), "%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->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 */
                  sub = e->sub;
                  /* find the end of the list */
                  while(sub->next){
                     sub = sub->next;
                  }
                  /* set the last sub->next to the first sub */
                  sub->next = e->sub;

                  e->next = gw->endpoints;
                  gw->endpoints = e;
               }
            }
         } else if (!strcasecmp(v->name, "trunk") ||
                    !strcasecmp(v->name, "line")) {

            /* locate existing endpoint */
            e = gw->endpoints;
            while (e) {
               if (!strcasecmp(v->value, e->name)) {
                  /* endpoint already exists */
                  e->delme = 0;
                  ep_reload = 1;
                  break;
               }
               e = e->next;
            }

            if (!e) {
               e = 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);
                  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;
               e->capability = capability;
               e->dtmfmode = dtmfmode;
               e->adsi = adsi;
               if (!strcasecmp(v->name, "trunk"))
                  e->type = TYPE_TRUNK;
               else
                  e->type = TYPE_LINE;

               e->immediate = immediate;
               e->callgroup=cur_callergroup;
               e->pickupgroup=cur_pickupgroup;
               e->callreturn = callreturn;
               e->cancallforward = cancallforward;
               e->canreinvite = canreinvite;
               e->singlepath = singlepath;
               e->callwaiting = callwaiting;
               e->hascallwaiting = callwaiting;
               e->slowsequence = slowsequence;
               e->transfer = transfer;
               e->threewaycalling = threewaycalling;
               if (!ep_reload) {
                  e->onhooktime = time(NULL);
                  /* ASSUME we're onhook */
                  e->hookstate = MGCP_ONHOOK;
                  snprintf(e->rqnt_ident, sizeof(e->rqnt_ident), "%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 */
                  sub = e->sub;
                  /* find the end of the list */
                  while (sub->next) {
                     sub = sub->next;
                  }
                  /* set the last sub->next to the first sub */
                  sub->next = e->sub;

                  e->next = gw->endpoints;
                  gw->endpoints = e;
               }
            }
         } else
            ast_log(LOG_WARNING, "Don't know keyword '%s' at line %d\n", v->name, v->lineno);
         v = v->next;
      }
   }
   if (!ntohl(gw->addr.sin_addr.s_addr) && !gw->dynamic) {
      ast_log(LOG_WARNING, "Gateway '%s' lacks IP address and isn't dynamic\n", gw->name);
      if (!gw_reload) {
         ast_mutex_destroy(&gw->msgs_lock);
         ast_free(gw);
      }
      return NULL;
   }
   gw->defaddr.sin_family = AF_INET;
   gw->addr.sin_family = AF_INET;
   if (gw->defaddr.sin_addr.s_addr && !ntohs(gw->defaddr.sin_port)) 
      gw->defaddr.sin_port = htons(DEFAULT_MGCP_GW_PORT);
   if (gw->addr.sin_addr.s_addr && !ntohs(gw->addr.sin_port))
      gw->addr.sin_port = htons(DEFAULT_MGCP_GW_PORT);
   if (gw->addr.sin_addr.s_addr)
      if (ast_ouraddrfor(&gw->addr.sin_addr, &gw->ourip))
         memcpy(&gw->ourip, &__ourip, sizeof(gw->ourip));

   return (gw_reload ? NULL : gw);
}

static char* control2str

(

int

ind

)

[static]

Definition at line 1420 of file chan_mgcp.c.

References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_FLASH, AST_CONTROL_HANGUP, AST_CONTROL_OFFHOOK, AST_CONTROL_OPTION, AST_CONTROL_RADIO_KEY, AST_CONTROL_RADIO_UNKEY, AST_CONTROL_RING, AST_CONTROL_RINGING, AST_CONTROL_TAKEOFFHOOK, and AST_CONTROL_WINK.

Referenced by mgcp_indicate().

                                  {
   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 void destroy_endpoint

(

struct mgcp_endpoint *

e

)

[static]

Definition at line 4003 of file chan_mgcp.c.

References ast_dsp_free(), ast_event_unsubscribe(), ast_free, ast_mutex_destroy(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_destroy(), ast_strlen_zero(), mgcp_endpoint::cmd_queue_lock, mgcp_subchannel::cxident, mgcp_endpoint::dsp, dump_cmd_queues(), dump_queue(), mgcp_endpoint::lock, mgcp_subchannel::lock, mgcp_subchannel::magic, MAX_SUBS, mgcp_queue_hangup(), mgcp_endpoint::mwi_event_sub, mgcp_subchannel::next, mgcp_endpoint::parent, mgcp_endpoint::rqnt_queue_lock, mgcp_subchannel::rtp, s, mgcp_endpoint::sub, and transmit_connection_del().

Referenced by prune_gateways().

{
   struct mgcp_subchannel *sub = e->sub->next, *s;
   int i;

   for (i = 0; i < MAX_SUBS; i++) {
      ast_mutex_lock(&sub->lock);
      if (!ast_strlen_zero(sub->cxident)) {
         transmit_connection_del(sub);
      }
      if (sub->rtp) {
         ast_rtp_destroy(sub->rtp);
         sub->rtp = NULL;
      }
      memset(sub->magic, 0, sizeof(sub->magic));
      mgcp_queue_hangup(sub);
      dump_cmd_queues(NULL, sub);
      ast_mutex_unlock(&sub->lock);
      sub = sub->next;
   }

   if (e->dsp) {
      ast_dsp_free(e->dsp);
   }

   dump_queue(e->parent, e);
   dump_cmd_queues(e, NULL);

   sub = e->sub;
   for (i = 0; (i < MAX_SUBS) && sub; i++) {
      s = sub;
      sub = sub->next;
      ast_mutex_destroy(&s->lock);
      ast_mutex_destroy(&s->cx_queue_lock);
      ast_free(s);
   }

   if (e->mwi_event_sub)
      ast_event_unsubscribe(e->mwi_event_sub);

   ast_mutex_destroy(&e->lock);
   ast_mutex_destroy(&e->rqnt_queue_lock);
   ast_mutex_destroy(&e->cmd_queue_lock);
   ast_free(e);
}

static void destroy_gateway

(

struct mgcp_gateway *

g

)

[static]

Definition at line 4049 of file chan_mgcp.c.

References ast_free, ast_free_ha(), dump_queue(), and mgcp_gateway::ha.

Referenced by prune_gateways().

{
   if (g->ha)
      ast_free_ha(g->ha);

   dump_queue(g, NULL);

   ast_free(g);
}

static void* do_monitor

(

void *

data

)

[static]

Definition at line 3409 of file chan_mgcp.c.

References ast_io_add(), AST_IO_IN, ast_io_wait(), ast_mutex_lock(), ast_mutex_unlock(), ast_sched_runq(), ast_sched_wait(), ast_verb, mgcp_gateway::endpoints, gateways, has_voicemail(), MGCP_ONHOOK, mgcp_reload_lock, mgcpsock_read(), monlock, netlock, reload_config(), transmit_notify_request(), and TYPE_LINE.

Referenced by restart_monitor().

{
   int res;
   int reloading;
   /*struct mgcp_gateway *g;*/
   /*struct mgcp_endpoint *e;*/
   /*time_t thispass = 0, lastpass = 0;*/

   /* Add an I/O event to our UDP socket */
   if (mgcpsock > -1) 
      mgcpsock_read_id = ast_io_add(io, mgcpsock, mgcpsock_read, AST_IO_IN, NULL);
   
   /* This thread monitors all the frame relay interfaces which are not yet in use
      (and thus do not have a separate thread) indefinitely */
   /* From here on out, we die whenever asked */
   for(;;) {
      /* Check for a reload request */
      ast_mutex_lock(&mgcp_reload_lock);
      reloading = mgcp_reloading;
      mgcp_reloading = 0;
      ast_mutex_unlock(&mgcp_reload_lock);
      if (reloading) {
         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
      /* 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 void dump_cmd_queues	(	struct mgcp_endpoint *	p,
		struct mgcp_subchannel *	sub
	)			[static]

dump_cmd_queues: (SC:) cleanup pending commands

Definition at line 2414 of file chan_mgcp.c.

References ast_free, ast_mutex_lock(), ast_mutex_unlock(), mgcp_endpoint::cmd_queue, mgcp_endpoint::cmd_queue_lock, mgcp_subchannel::cx_queue, mgcp_subchannel::cx_queue_lock, mgcp_subchannel::next, mgcp_request::next, mgcp_endpoint::rqnt_queue, mgcp_endpoint::rqnt_queue_lock, and mgcp_endpoint::sub.

Referenced by destroy_endpoint(), handle_request(), handle_response(), and unalloc_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);
   }
}

static void dump_queue	(	struct mgcp_gateway *	gw,
		struct mgcp_endpoint *	p
	)			[static]

Definition at line 555 of file chan_mgcp.c.

References ast_free, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), LOG_NOTICE, mgcp_gateway::msgs, mgcp_gateway::msgs_lock, mgcp_gateway::name, and mgcp_message::next.

Referenced by destroy_endpoint(), destroy_gateway(), and handle_request().

{
   struct mgcp_message *cur, *q = NULL, *w, *prev;

   ast_mutex_lock(&gw->msgs_lock);
   prev = NULL, cur = gw->msgs;
   while (cur) {
      if (!p || cur->owner_ep == p) {
         if (prev)
            prev->next = cur->next;
         else
            gw->msgs = cur->next;

         ast_log(LOG_NOTICE, "Removing message from %s transaction %u\n", 
            gw->name, cur->seqno);

         w = cur;
         cur = cur->next;
         if (q) {
            w->next = q;
         } else {
            w->next = NULL;
         }
         q = w;
      } else {
         prev = cur, cur=cur->next;
      }
   }
   ast_mutex_unlock(&gw->msgs_lock);

   while (q) {
      cur = q;
      q = q->next;
      ast_free(cur);
   }
}

static int find_and_retrans	(	struct mgcp_subchannel *	sub,
		struct mgcp_request *	req
	)			[static]

Definition at line 3288 of file chan_mgcp.c.

References ast_free, mgcp_request::identifier, mgcp_response::next, mgcp_endpoint::parent, mgcp_subchannel::parent, resend_response(), RESPONSE_TIMEOUT, and mgcp_gateway::responses.

Referenced by mgcpsock_read().

{
   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;
   cur = sub->parent->parent->responses;
   while(cur) {
      next = cur->next;
      if (now - cur->whensent > RESPONSE_TIMEOUT) {
         /* Delete this entry */
         if (prev)
            prev->next = next;
         else
            sub->parent->parent->responses = next;
         ast_free(cur);
      } else {
         if (seqno == cur->seqno)
            answer = cur;
         prev = cur;
      }
      cur = next;
   }
   if (answer) {
      resend_response(sub, answer);
      return 1;
   }
   return 0;
}

static struct mgcp_request* find_command	(	struct mgcp_endpoint *	p,
		struct mgcp_subchannel *	sub,
		struct mgcp_request **	queue,
		ast_mutex_t *	l,
		int	ident
	)			[static, read]

find_command: (SC:) remove command transaction from queue

Definition at line 2448 of file chan_mgcp.c.

References mgcp_gateway::addr, ast_inet_ntoa(), ast_mutex_lock(), ast_mutex_unlock(), ast_verbose, mgcp_postrequest(), mgcp_request::next, and mgcp_endpoint::parent.

Referenced by handle_response().

{
   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) {
            if (mgcpdebug) {
               ast_verbose("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;
}

static struct mgcp_subchannel* find_subchannel_and_lock	(	char *	name,
		int	msgid,
		struct sockaddr_in *	sin
	)			[static, read]

Definition at line 1651 of file chan_mgcp.c.

References __ourip, mgcp_gateway::addr, ast_copy_string(), ast_debug, ast_inet_ntoa(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_ouraddrfor(), ast_verb, mgcp_gateway::defaddr, mgcp_gateway::dynamic, mgcp_gateway::endpoints, gatelock, gateways, mgcp_subchannel::id, mgcp_subchannel::lock, LOG_NOTICE, mgcp_endpoint::name, mgcp_gateway::name, mgcp_endpoint::next, mgcp_subchannel::next, mgcp_gateway::next, mgcp_gateway::ourip, and mgcp_endpoint::sub.

Referenced by mgcp_request(), and mgcpsock_read().

{
   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';
   }
   g = gateways;
   while(g) {
      if ((!name || !strcasecmp(g->name, at)) && 
          (sin || g->addr.sin_addr.s_addr || g->defaddr.sin_addr.s_addr)) {
         /* Found the gateway.  If it's dynamic, save it's address -- now for the endpoint */
         if (sin && g->dynamic && name) {
            if ((g->addr.sin_addr.s_addr != sin->sin_addr.s_addr) ||
               (g->addr.sin_port != sin->sin_port)) {
               memcpy(&g->addr, sin, sizeof(g->addr));
               if (ast_ouraddrfor(&g->addr.sin_addr, &g->ourip))
                  memcpy(&g->ourip, &__ourip, sizeof(g->ourip));
               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)) {
               g = g->next;
               continue;
            }
         } else {
            g = g->next;
            continue;
         }
         /* SC */
         p = g->endpoints;
         while(p) {
            ast_debug(1, "Searching on %s@%s for subchannel\n",
               p->name, g->name);
            if (msgid) {
#if 0 /* new transport mech */
               sub = p->sub;
               do {
                  ast_debug(1, "Searching on %s@%s-%d for subchannel with lastout: %d\n",
                     p->name, g->name, sub->id, msgid);
                  if (sub->lastout == msgid) {
                     ast_debug(1, "Found subchannel sub%d to handle request %d sub->lastout: %d\n",
                        sub->id, msgid, sub->lastout);
                     found = 1;
                     break;
                  }
                  sub = sub->next;
               } while (sub != p->sub);
               if (found) {
                  break;
               }
#endif
               /* SC */
               sub = p->sub;
               found = 1;
               /* SC */
               break;
            } else if (name && !strcasecmp(p->name, tmp)) {
               ast_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;
            }
            p = p->next;
         }
         if (sub && found) {
            ast_mutex_lock(&sub->lock);
            break;
         }
      }
      g = g->next;
   }
   ast_mutex_unlock(&gatelock);
   if (!sub) {
      if (name) {
         if (g)
            ast_log(LOG_NOTICE, "Endpoint '%s' not found on gateway '%s'\n", tmp, at);
         else
            ast_log(LOG_NOTICE, "Gateway '%s' (and thus its endpoint '%s') does not exist\n", at, tmp);
      } 
   }
   return sub;
}

static char* get_csv	(	char *	c,
		int *	len,
		char **	next
	)			[static]

get_csv: (SC:) get comma separated value

Definition at line 1630 of file chan_mgcp.c.

References s.

Referenced by handle_response().

{
   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 char* get_header	(	struct mgcp_request *	req,
		char *	name
	)			[static]

Definition at line 1623 of file chan_mgcp.c.

References __get_header().

Referenced by handle_request(), and handle_response().

{
   int start = 0;
   return __get_header(req, name, &start);
}

static char* get_sdp	(	struct mgcp_request *	req,
		char *	name
	)			[static]

Definition at line 1575 of file chan_mgcp.c.

References get_sdp_by_line(), len(), mgcp_request::line, and mgcp_request::lines.

Referenced by process_sdp().

{
   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 char* get_sdp_by_line	(	char *	line,
		char *	name,
		int	nameLen
	)			[static]

Definition at line 1565 of file chan_mgcp.c.

Referenced by get_sdp(), and get_sdp_iterate().

{
   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_iterate	(	int *	iterator,
		struct mgcp_request *	req,
		char *	name
	)			[static]

Definition at line 1593 of file chan_mgcp.c.

References get_sdp_by_line(), len(), and mgcp_request::line.

Referenced by process_sdp().

{
   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 void handle_hd_hf	(	struct mgcp_subchannel *	sub,
		char *	ev
	)			[static]

Definition at line 2964 of file chan_mgcp.c.

References ast_bridged_channel(), AST_CONTROL_ANSWER, AST_CONTROL_UNHOLD, ast_hangup(), ast_log(), ast_pthread_create_detached, ast_queue_control(), AST_STATE_DOWN, AST_STATE_RING, mgcp_subchannel::cxmode, errno, has_voicemail(), mgcp_endpoint::hookstate, mgcp_endpoint::immediate, LOG_WARNING, MGCP_CX_SENDRECV, mgcp_new(), MGCP_OFFHOOK, mgcp_queue_control(), mgcp_ss(), mgcp_gateway::name, mgcp_endpoint::name, mgcp_subchannel::outgoing, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, start_rtp(), transmit_modify_request(), and transmit_notify_request().

Referenced by handle_request().

{
   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, "G/rt");
#endif      
            c = mgcp_new(sub, AST_STATE_RING);
            if (!c) {
               ast_log(LOG_WARNING, "Unable to start PBX on channel %s@%s\n", p->name, p->parent->name);
               transmit_notify_request(sub, "G/cg");
               ast_hangup(c);
            }
         } else {
            if (has_voicemail(p)) {
               transmit_notify_request(sub, "L/sl");
            } else {
               transmit_notify_request(sub, "L/dl");
            }
            c = mgcp_new(sub, AST_STATE_DOWN);
            if (c) {
               if (ast_pthread_create_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 char* handle_mgcp_audit_endpoint	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)			[static]

Definition at line 1077 of file chan_mgcp.c.

References ast_cli_args::argc, ast_cli_args::argv, ast_cli(), ast_mutex_lock(), ast_mutex_unlock(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, mgcp_gateway::endpoints, ast_cli_args::fd, gatelock, gateways, me, mgcp_endpoint::name, mgcp_gateway::name, mgcp_gateway::next, mgcp_endpoint::next, transmit_audit_endpoint(), and ast_cli_entry::usage.

{
   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 = a->argv[3];
   gname = ename;
   while (*gname) {
      if (*gname == '@') {
         *gname = 0;
         gname++;
         break;
      }
      gname++;
   }
   if (gname[0] == '[')
      gname++;
   if ((c = strrchr(gname, ']')))
      *c = '\0';
   ast_mutex_lock(&gatelock);
   mg = gateways;
   while(mg) {
      if (!strcasecmp(mg->name, gname)) {
         me = mg->endpoints;
         while(me) {
            if (!strcasecmp(me->name, ename)) {
               found = 1;
               transmit_audit_endpoint(me);
               break;
            }
            me = me->next;
         }
         if (found) {
            break;
         }
      }
      mg = mg->next;
   }
   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
	)			[static]

Definition at line 1167 of file chan_mgcp.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli_args::argv, ast_cli(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, and ast_cli_entry::usage.

{
   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 char* handle_mgcp_set_debug_deprecated	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)			[static]

Definition at line 1142 of file chan_mgcp.c.

References ast_cli_args::argc, ast_cli_args::argv, ast_cli(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, and ast_cli_entry::usage.

{
   switch (cmd) {
   case CLI_INIT:
      e->command = "mgcp set debug [off]";
      e->usage =
         "Usage: mgcp set debug [off]\n"
         "       Enables/Disables dumping of MGCP packets for debugging purposes\n";   
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   if (a->argc < 3 || a->argc > 4)
      return CLI_SHOWUSAGE;
   if (a->argc == 3) {
      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");
   }
   return CLI_SUCCESS;
}

static char* handle_mgcp_show_endpoints	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)			[static]

Definition at line 1037 of file chan_mgcp.c.

References mgcp_gateway::addr, ast_cli_args::argc, ast_cli(), ast_inet_ntoa(), ast_mutex_lock(), ast_mutex_unlock(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, mgcp_endpoint::context, mgcp_gateway::defaddr, mgcp_gateway::dynamic, mgcp_gateway::endpoints, ast_cli_args::fd, gatelock, gateways, me, mgcp_endpoint::name, mgcp_gateway::name, mgcp_gateway::next, mgcp_endpoint::next, mgcp_subchannel::owner, mgcp_endpoint::sub, ast_cli_entry::usage, and mgcp_gateway::wcardep.

{
   struct mgcp_gateway  *mg;
   struct mgcp_endpoint *me;
   int hasendpoints = 0;

   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);
   mg = gateways;
   while(mg) {
      me = mg->endpoints;
      ast_cli(a->fd, "Gateway '%s' at %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->dynamic ? "Dynamic" : "Static");
      while(me) {
         /* Don't show wilcard endpoint */
         if (strcmp(me->name, mg->wcardep) != 0)
            ast_cli(a->fd, "   -- '%s@%s in '%s' is %s\n", me->name, mg->name, me->context, me->sub->owner ? "active" : "idle");
         hasendpoints = 1;
         me = me->next;
      }
      if (!hasendpoints) {
         ast_cli(a->fd, "   << No Endpoints Defined >>     ");
      }
      mg = mg->next;
   }
   ast_mutex_unlock(&gatelock);
   return CLI_SUCCESS;
}

static int handle_request	(	struct mgcp_subchannel *	sub,
		struct mgcp_request *	req,
		struct sockaddr_in *	sin
	)			[static]

Definition at line 3046 of file chan_mgcp.c.

References ast_channel::_state, mgcp_subchannel::alreadygone, ast_bridged_channel(), AST_CONTROL_HOLD, AST_CONTROL_UNHOLD, ast_debug, AST_FRAME_DTMF, ast_inet_ntoa(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_queue_control(), AST_STATE_DOWN, AST_STATE_UP, ast_verb, ast_verbose, attempt_transfer(), mgcp_endpoint::callwaiting, mgcp_endpoint::curtone, mgcp_subchannel::cxmode, mgcp_endpoint::dtmf_buf, dump_cmd_queues(), dump_queue(), mgcp_gateway::endpoints, ast_frame::frametype, get_header(), handle_hd_hf(), has_voicemail(), mgcp_endpoint::hascallwaiting, mgcp_endpoint::hidecallerid, mgcp_endpoint::hookstate, mgcp_subchannel::id, mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, MGCP_CX_CONF, MGCP_CX_MUTE, MGCP_CX_RECVONLY, MGCP_CX_SENDRECV, MGCP_OFFHOOK, MGCP_ONHOOK, mgcp_queue_frame(), mgcp_queue_hangup(), mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::next, mgcp_subchannel::next, mgcp_subchannel::outgoing, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, s, ast_frame::src, mgcp_endpoint::sub, ast_frame::subclass, mgcp_endpoint::threewaycalling, mgcp_endpoint::transfer, transmit_audit_endpoint(), transmit_connection_del(), transmit_modify_request(), transmit_notify_request(), transmit_response(), mgcp_request::verb, and mgcp_gateway::wcardep.

Referenced by mgcpsock_read().

{
   char *ev, *s;
   struct ast_frame f = { 0, };
   struct mgcp_endpoint *p = sub->parent;
   struct mgcp_gateway *g = NULL;
   int res;

   if (mgcpdebug) {
      ast_verbose("Handling request '%s' on %s@%s\n", req->verb, p->name, p->parent->name);
   }
   /* Clear out potential response */
   if (!strcasecmp(req->verb, "RSIP")) {
      /* Test if this RSIP request is just a keepalive */
      if(!strcasecmp( get_header(req, "RM"), "X-keepalive")) {
         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;
            tmp_ep = g->endpoints;
            while (tmp_ep) {
               /*if ((strcmp(tmp_ep->name, "*") != 0) && (strcmp(tmp_ep->name, "aaln/" "*") != 0)) {*/
               if (strcmp(tmp_ep->name, g->wcardep) != 0) {
                  struct mgcp_subchannel *tmp_sub, *first_sub;
                  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;
                  }
               }
               tmp_ep = tmp_ep->next;
            }
         } else if (sub->owner) {
            mgcp_queue_hangup(sub);
         }
         transmit_response(sub, "200", req, "OK");
         /* We dont 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;
         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 = 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, "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 void handle_response	(	struct mgcp_endpoint *	p,
		struct mgcp_subchannel *	sub,
		int	result,
		unsigned int	ident,
		struct mgcp_request *	resp
	)			[static]

Definition at line 2479 of file chan_mgcp.c.

References ast_copy_string(), ast_free, ast_log(), ast_strlen_zero(), ast_verb, mgcp_request::cmd, mgcp_endpoint::cmd_queue, mgcp_endpoint::cmd_queue_lock, mgcp_subchannel::cx_queue, mgcp_subchannel::cx_queue_lock, mgcp_subchannel::cxident, dump_cmd_queues(), find_command(), get_csv(), get_header(), mgcp_endpoint::hookstate, mgcp_subchannel::id, len(), mgcp_request::lines, LOG_NOTICE, LOG_WARNING, MGCP_CMD_AUEP, MGCP_CMD_CRCX, MGCP_OFFHOOK, MGCP_ONHOOK, mgcp_queue_hangup(), mgcp_endpoint::name, mgcp_gateway::name, mgcp_subchannel::next, mgcp_subchannel::owner, mgcp_endpoint::parent, process_sdp(), mgcp_endpoint::rqnt_queue, mgcp_endpoint::rqnt_queue_lock, mgcp_subchannel::rtp, mgcp_endpoint::slowsequence, start_rtp(), mgcp_endpoint::sub, mgcp_subchannel::tmpdest, transmit_connection_del(), transmit_connection_del_w_params(), transmit_modify_with_sdp(), and transmit_notify_request().

Referenced by mgcpsock_read(), and retrans_pkt().

{
   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->owner) {
            ast_log(LOG_NOTICE, "Terminating on result %d from %s@%s-%d\n", 
               result, p->name, p->parent->name, sub ? sub->id:-1);
            mgcp_queue_hangup(sub);
         }
      } else {
         if (p->sub->next->owner) {
            ast_log(LOG_NOTICE, "Terminating on result %d from %s@%s-%d\n", 
               result, p->name, p->parent->name, sub ? sub->id:-1);
            mgcp_queue_hangup(p->sub);
         }

         if (p->sub->owner) {
            ast_log(LOG_NOTICE, "Terminating on result %d from %s@%s-%d\n", 
               result, p->name, p->parent->name, sub ? sub->id:-1);
            mgcp_queue_hangup(p->sub);
         }

         dump_cmd_queues(p, NULL);
      }
   }

   if (resp) {
      if (req->cmd == MGCP_CMD_CRCX) {
         if ((c = get_header(resp, "I"))) {
            if (!ast_strlen_zero(c) && sub) {
               /* 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 int has_voicemail

(

struct mgcp_endpoint *

p

)

[static]

Definition at line 462 of file chan_mgcp.c.

References ast_app_has_voicemail(), ast_event_destroy(), ast_event_get_cached(), ast_event_get_ie_uint(), AST_EVENT_IE_CONTEXT, AST_EVENT_IE_END, AST_EVENT_IE_MAILBOX, AST_EVENT_IE_NEWMSGS, AST_EVENT_IE_PLTYPE_STR, AST_EVENT_MWI, ast_strdupa, ast_strlen_zero(), mgcp_endpoint::mailbox, mbox(), and strsep().

Referenced by do_monitor(), handle_hd_hf(), handle_request(), mgcp_hangup(), and mgcp_request().

{
   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 init_req	(	struct mgcp_endpoint *	p,
		struct mgcp_request *	req,
		char *	verb
	)			[static]

Definition at line 2012 of file chan_mgcp.c.

References ast_log(), mgcp_request::data, mgcp_request::header, mgcp_request::headers, mgcp_gateway::isnamedottedip, mgcp_request::len, LOG_WARNING, MGCP_MAX_HEADERS, mgcp_gateway::name, mgcp_endpoint::name, and mgcp_endpoint::parent.

Referenced by reqprep().

{
   /* 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\r\n", verb, oseq, p->name, p->parent->name);
   else
      snprintf(req->header[req->headers], sizeof(req->data) - req->len, "%s %d %s@%s MGCP 1.0\r\n", verb, oseq, p->name, p->parent->name);
   req->len += strlen(req->header[req->headers]);
   if (req->headers < MGCP_MAX_HEADERS)
      req->headers++;
   else
      ast_log(LOG_WARNING, "Out of header space\n");
   return 0;
}

static int init_resp	(	struct mgcp_request *	req,
		char *	resp,
		struct mgcp_request *	orig,
		char *	resprest
	)			[static]

Definition at line 1995 of file chan_mgcp.c.

References ast_log(), mgcp_request::data, mgcp_request::header, mgcp_request::headers, mgcp_request::identifier, mgcp_request::len, LOG_WARNING, and MGCP_MAX_HEADERS.

Referenced by respprep().

{
   /* 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 load_module

(

void

)

[static]

load_module: PBX load module - initialization ---

Definition at line 4278 of file chan_mgcp.c.

References ast_channel_register(), ast_cli_register_multiple(), ast_log(), AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, ast_rtp_proto_register(), io_context_create(), io_context_destroy(), LOG_ERROR, LOG_WARNING, reload_config(), restart_monitor(), sched_context_create(), and sched_context_destroy().

{
   if (!(sched = 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");
      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);
      sched_context_destroy(sched);
      return AST_MODULE_LOAD_FAILURE;
   }

   ast_rtp_proto_register(&mgcp_rtp);
   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 int mgcp_answer

(

struct ast_channel *

ast

)

[static]

Definition at line 1203 of file chan_mgcp.c.

References ast_channel::_state, ast_debug, ast_mutex_lock(), ast_mutex_unlock(), ast_setstate(), AST_STATE_UP, ast_verb, mgcp_subchannel::cxmode, mgcp_subchannel::id, mgcp_subchannel::lock, MGCP_CX_SENDRECV, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, start_rtp(), ast_channel::tech_pvt, transmit_modify_request(), and transmit_notify_request().

{
   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 int mgcp_call	(	struct ast_channel *	ast,
		char *	dest,
		int	timeout
	)			[static]

Definition at line 843 of file chan_mgcp.c.

References ast_channel::_state, AST_CONTROL_RINGING, ast_copy_string(), AST_LIST_TRAVERSE, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_queue_control(), ast_setstate(), AST_STATE_DOWN, AST_STATE_RESERVED, AST_STATE_RINGING, ast_strlen_zero(), ast_var_name(), ast_var_value(), ast_verb, mgcp_subchannel::callid, ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, mgcp_subchannel::cxident, mgcp_subchannel::cxmode, mgcp_endpoint::hookstate, mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, MGCP_CX_RECVONLY, MGCP_CX_SENDRECV, MGCP_OFFHOOK, MGCP_ONHOOK, mgcp_subchannel::next, mgcp_subchannel::outgoing, mgcp_subchannel::owner, mgcp_subchannel::parent, mgcp_subchannel::rtp, start_rtp(), ast_channel::tech_pvt, transmit_modify_request(), transmit_notify_request_with_callerid(), mgcp_endpoint::type, TYPE_LINE, and ast_channel::varshead.

{
   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;

   if (mgcpdebug) {
      ast_verb(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);
         if (mgcpdebug) {
            ast_verb(3, "MGCP distinctive callwait %s\n", tone);
         }
      } else {
         ast_copy_string(tone, "L/wt", sizeof(tone));
         if (mgcpdebug) {
            ast_verb(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);
         if (mgcpdebug) {
            ast_verb(3, "MGCP distinctive ring %s\n", tone);
         }
      } else {
         ast_copy_string(tone, "L/rg", sizeof(tone));
         if (mgcpdebug) {
            ast_verb(3, "MGCP default ring\n");
         }
      }
      break;
   }

   if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
      ast_log(LOG_WARNING, "mgcp_call called on %s, neither down nor reserved\n", ast->name);
      ast_mutex_unlock(&sub->lock);
      return -1;
   }

   res = 0;
   sub->outgoing = 1;
   sub->cxmode = MGCP_CX_RECVONLY;
   if (p->type == TYPE_LINE) {
      if (!sub->rtp) {
         start_rtp(sub);
      } else {
         transmit_modify_request(sub);
      }

      if (sub->next->owner && !ast_strlen_zero(sub->next->cxident) && !ast_strlen_zero(sub->next->callid)) {
         /* try to prevent a callwait from disturbing the other connection */
         sub->next->cxmode = MGCP_CX_RECVONLY;
         transmit_modify_request(sub->next);
      }

      transmit_notify_request_with_callerid(sub, tone, ast->cid.cid_num, ast->cid.cid_name);
      ast_setstate(ast, AST_STATE_RINGING);

      if (sub->next->owner && !ast_strlen_zero(sub->next->cxident) && !ast_strlen_zero(sub->next->callid)) {
         /* Put the connection back in sendrecv */
         sub->next->cxmode = MGCP_CX_SENDRECV;
         transmit_modify_request(sub->next);
      }
   } else {
      ast_log(LOG_NOTICE, "Don't know how to dial on trunks yet\n");
      res = -1;
   }
   ast_mutex_unlock(&sub->lock);
   ast_queue_control(ast, AST_CONTROL_RINGING);
   return res;
}

static int mgcp_devicestate

(

void *

data

)

[static]

mgcp_devicestate: channel callback for device status monitoring

Parameters:

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

Returns:

device status result (from devicestate.h) AST_DEVICE_INVALID (not available) or AST_DEVICE_UNKNOWN (available but unknown state)

Definition at line 1372 of file chan_mgcp.c.

References AST_DEVICE_INVALID, AST_DEVICE_UNKNOWN, ast_mutex_lock(), ast_mutex_unlock(), ast_strdupa, mgcp_gateway::endpoints, gatelock, gateways, mgcp_endpoint::name, mgcp_gateway::name, mgcp_endpoint::next, and mgcp_gateway::next.

{
   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);
   g = gateways;
   while (g) {
      if (strcasecmp(g->name, gw) == 0) {
         e = g->endpoints;
         break;
      }
      g = g->next;
   }

   if (!e)
      goto error;

   while (e) {
      if (strcasecmp(e->name, endpt) == 0)
         break;
      e = e->next;
   }

   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 int mgcp_fixup	(	struct ast_channel *	oldchan,
		struct ast_channel *	newchan
	)			[static]

Definition at line 1299 of file chan_mgcp.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, mgcp_subchannel::owner, and ast_channel::tech_pvt.

{
   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 enum ast_rtp_get_result mgcp_get_rtp_peer	(	struct ast_channel *	chan,
		struct ast_rtp **	rtp
	)			[static]

Definition at line 3970 of file chan_mgcp.c.

References AST_RTP_GET_FAILED, AST_RTP_TRY_NATIVE, AST_RTP_TRY_PARTIAL, mgcp_endpoint::canreinvite, mgcp_subchannel::parent, mgcp_subchannel::rtp, and ast_channel::tech_pvt.

{
   struct mgcp_subchannel *sub = NULL;

   if (!(sub = chan->tech_pvt) || !(sub->rtp))
      return AST_RTP_GET_FAILED;

   *rtp = sub->rtp;

   if (sub->parent->canreinvite)
      return AST_RTP_TRY_NATIVE;
   else
      return AST_RTP_TRY_PARTIAL;
}

static int mgcp_hangup

(

struct ast_channel *

ast

)

[static]

Definition at line 936 of file chan_mgcp.c.

References mgcp_subchannel::alreadygone, ast_bridged_channel(), ast_debug, ast_dsp_free(), ast_module_unref(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_destroy(), ast_strlen_zero(), ast_verb, mgcp_subchannel::callid, mgcp_endpoint::callwaiting, ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, mgcp_subchannel::cxident, mgcp_subchannel::cxmode, mgcp_endpoint::dsp, mgcp_endpoint::dtmf_buf, mgcp_endpoint::dtmfmode, has_voicemail(), mgcp_endpoint::hascallwaiting, mgcp_endpoint::hidecallerid, mgcp_endpoint::hookstate, mgcp_subchannel::lock, mgcp_subchannel::magic, MGCP_CX_INACTIVE, MGCP_CX_RECVONLY, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, MGCP_OFFHOOK, MGCP_ONHOOK, MGCP_SUBCHANNEL_MAGIC, mgcp_gateway::name, mgcp_endpoint::name, mgcp_subchannel::next, mgcp_subchannel::outgoing, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, mgcp_endpoint::sub, ast_channel::tech_pvt, mgcp_subchannel::tmpdest, transmit_connection_del(), transmit_modify_request(), transmit_notify_request(), and transmit_notify_request_with_callerid().

{
   struct mgcp_subchannel *sub = ast->tech_pvt;
   struct mgcp_endpoint *p = sub->parent;

   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);
   if (mgcpdebug) {
      ast_verb(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;
         if (mgcpdebug) {
            ast_verb(2, "MGCP free dsp on %s@%s\n", p->name, p->parent->name);
         }
         ast_dsp_free(p->dsp);
         p->dsp = NULL;
      }
   }

   sub->owner = NULL;
   if (!ast_strlen_zero(sub->cxident)) {
      transmit_connection_del(sub);
   }
   sub->cxident[0] = '\0';
   if ((sub == p->sub) && sub->next->owner) {
      if (p->hookstate == MGCP_OFFHOOK) {
         if (sub->next->owner && ast_bridged_channel(sub->next->owner)) {
            transmit_notify_request_with_callerid(p->sub, "L/wt", ast_bridged_channel(sub->next->owner)->cid.cid_num, ast_bridged_channel(sub->next->owner)->cid.cid_name);
         }
      } else {
         /* set our other connection as the primary and swith over to it */
         p->sub = sub->next;
         p->sub->cxmode = MGCP_CX_RECVONLY;
         transmit_modify_request(p->sub);
         if (sub->next->owner && ast_bridged_channel(sub->next->owner)) {
            transmit_notify_request_with_callerid(p->sub, "L/rg", ast_bridged_channel(sub->next->owner)->cid.cid_num, ast_bridged_channel(sub->next->owner)->cid.cid_name);
         }
      }

   } else if ((sub == p->sub->next) && p->hookstate == MGCP_OFFHOOK) {
      transmit_notify_request(sub, "L/v");
   } else if (p->hookstate == MGCP_OFFHOOK) {
      transmit_notify_request(sub, "L/ro");
   } else {
      transmit_notify_request(sub, "");
   }

   ast->tech_pvt = NULL;
   sub->alreadygone = 0;
   sub->outgoing = 0;
   sub->cxmode = MGCP_CX_INACTIVE;
   sub->callid[0] = '\0';
   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_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)) {
         if (mgcpdebug) {
            ast_verb(3, "MGCP mgcp_hangup(%s) on %s@%s set vmwi(+)\n",
               ast->name, p->name, p->parent->name);
         }
         transmit_notify_request(sub, "L/vmwi(+)");
      } else {
         if (mgcpdebug) {
            ast_verb(3, "MGCP mgcp_hangup(%s) on %s@%s set vmwi(-)\n",
               ast->name, p->name, p->parent->name);
         }
         transmit_notify_request(sub, "L/vmwi(-)");
      }
   }
   ast_mutex_unlock(&sub->lock);
   return 0;
}

static int mgcp_indicate	(	struct ast_channel *	ast,
		int	ind,
		const void *	data,
		size_t	datalen
	)			[static]

Definition at line 1452 of file chan_mgcp.c.

References AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, ast_log(), ast_moh_start(), ast_moh_stop(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_new_source(), ast_verb, control2str(), mgcp_subchannel::lock, LOG_WARNING, mgcp_subchannel::rtp, ast_channel::tech_pvt, and transmit_notify_request().

{
   struct mgcp_subchannel *sub = ast->tech_pvt;
   int res = 0;

   if (mgcpdebug) {
      ast_verb(3, "MGCP asked to indicate %d '%s' condition on channel %s\n",
         ind, control2str(ind), ast->name);
   }
   ast_mutex_lock(&sub->lock);
   switch(ind) {
   case AST_CONTROL_RINGING:
#ifdef DLINK_BUGGY_FIRMWARE   
      transmit_notify_request(sub, "rt");
#else
      transmit_notify_request(sub, "G/rt");
#endif      
      break;
   case AST_CONTROL_BUSY:
      transmit_notify_request(sub, "L/bz");
      break;
   case AST_CONTROL_CONGESTION:
      transmit_notify_request(sub, "G/cg");
      break;
   case 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_new_source(sub->rtp);
      break;
   case -1:
      transmit_notify_request(sub, "");
      break;
   default:
      ast_log(LOG_WARNING, "Don't know how to indicate condition %d\n", ind);
      res = -1;
   }
   ast_mutex_unlock(&sub->lock);
   return res;
}

static struct ast_channel* mgcp_new	(	struct mgcp_subchannel *	sub,
		int	state
	)			[static, read]

Definition at line 1496 of file chan_mgcp.c.

References mgcp_endpoint::accountcode, mgcp_endpoint::adsi, ast_channel::adsicpe, ast_channel::amaflags, mgcp_endpoint::amaflags, AST_ADSI_UNAVAILABLE, ast_best_codec(), ast_channel_alloc, ast_channel_set_fd(), ast_copy_string(), ast_dsp_new(), ast_dsp_set_digitmode(), ast_dsp_set_features(), ast_hangup(), ast_jb_configure(), ast_log(), ast_module_ref(), ast_pbx_start(), ast_rtp_fd(), ast_state2str(), AST_STATE_DOWN, AST_STATE_RING, ast_strdup, ast_string_field_build, ast_string_field_set, ast_strlen_zero(), ast_verb, mgcp_endpoint::call_forward, mgcp_endpoint::callgroup, ast_channel::callgroup, mgcp_endpoint::capability, ast_channel::cid, ast_callerid::cid_ani, mgcp_endpoint::cid_name, mgcp_endpoint::cid_num, ast_channel::context, mgcp_endpoint::context, mgcp_endpoint::dsp, DSP_DIGITMODE_NOQUELCH, DSP_FEATURE_DIGIT_DETECT, mgcp_endpoint::dtmfmode, ast_channel::exten, mgcp_endpoint::exten, global_jbconf, mgcp_subchannel::id, mgcp_endpoint::language, LOG_WARNING, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, name, mgcp_gateway::name, mgcp_endpoint::name, ast_channel::nativeformats, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_endpoint::pickupgroup, ast_channel::pickupgroup, ast_channel::priority, ast_channel::rawreadformat, ast_channel::rawwriteformat, ast_channel::readformat, ast_channel::rings, mgcp_subchannel::rtp, ast_channel::tech, ast_channel::tech_pvt, and ast_channel::writeformat.

Referenced by handle_hd_hf(), and mgcp_request().

{
   struct ast_channel *tmp;
   struct mgcp_endpoint *i = sub->parent;
   int fmt;

   tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, 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;
      tmp->nativeformats = i->capability;
      if (!tmp->nativeformats)
         tmp->nativeformats = capability;
      fmt = ast_best_codec(tmp->nativeformats);
      ast_string_field_build(tmp, name, "MGCP/%s@%s-%d", i->name, i->parent->name, sub->id);
      if (sub->rtp)
         ast_channel_set_fd(tmp, 0, ast_rtp_fd(sub->rtp));
      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;
      tmp->writeformat = fmt;
      tmp->rawwriteformat = fmt;
      tmp->readformat = fmt;
      tmp->rawreadformat = fmt;
      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 */
      tmp->cid.cid_ani = ast_strdup(i->cid_num);
      
      if (!i->adsi)
         tmp->adsicpe = AST_ADSI_UNAVAILABLE;
      tmp->priority = 1;
      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 int mgcp_postrequest	(	struct mgcp_endpoint *	p,
		struct mgcp_subchannel *	sub,
		char *	data,
		int	len,
		unsigned int	seqno
	)			[static]

Definition at line 693 of file chan_mgcp.c.

References __mgcp_xmit(), ast_free, ast_malloc, ast_mutex_lock(), ast_mutex_unlock(), ast_sched_add(), ast_tvnow(), DEFAULT_RETRANS, msg, mgcp_gateway::msgs, mgcp_gateway::msgs_lock, mgcp_message::next, mgcp_endpoint::next, mgcp_endpoint::parent, retrans_pkt(), and mgcp_gateway::retransid.

Referenced by find_command(), and send_request().

{
   struct mgcp_message *msg;
   struct mgcp_message *cur;
   struct mgcp_gateway *gw;
   struct timeval now;

   msg = ast_malloc(sizeof(*msg) + len);
   if (!msg) {
      return -1;
   }
   gw = ((p && p->parent) ? p->parent : NULL);
   if (!gw) {
      ast_free(msg);
      return -1;
   }
/* SC
   time(&t);
   if (gw->messagepending && (gw->lastouttime + 20 < t)) {
      ast_log(LOG_NOTICE, "Timeout waiting for response to message:%d,  lastouttime: %ld, now: %ld.  Dumping pending queue\n",
         gw->msgs ? gw->msgs->seqno : -1, (long) gw->lastouttime, (long) t);
      dump_queue(sub->parent);
   }
*/
   msg->owner_sub = sub;
   msg->owner_ep = p;
   msg->seqno = seqno;
   msg->next = NULL;
   msg->len = len;
   msg->retrans = 0;
   memcpy(msg->buf, data, msg->len);

   ast_mutex_lock(&gw->msgs_lock);
   cur = gw->msgs;
   if (cur) {
      while(cur->next)
         cur = cur->next;
      cur->next = msg;
   } else {
      gw->msgs = msg;
   }

   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);
/* SC
   if (!gw->messagepending) {
      gw->messagepending = 1;
      gw->lastout = seqno;
      gw->lastouttime = t;
*/
   __mgcp_xmit(gw, msg->buf, msg->len);
      /* XXX Should schedule retransmission XXX */
/* SC
   } else
      ast_debug(1, "Deferring transmission of transaction %d\n", seqno);
*/
   return 0;
}

static void mgcp_queue_control	(	struct mgcp_subchannel *	sub,
		int	control
	)			[static]

Definition at line 624 of file chan_mgcp.c.

References AST_FRAME_CONTROL, mgcp_queue_frame(), and ast_frame::subclass.

Referenced by handle_hd_hf().

{
   struct ast_frame f = { AST_FRAME_CONTROL, };
   f.subclass = control;
   return mgcp_queue_frame(sub, &f);
}

static void mgcp_queue_frame	(	struct mgcp_subchannel *	sub,
		struct ast_frame *	f
	)			[static]

Definition at line 592 of file chan_mgcp.c.

References ast_channel_trylock, ast_channel_unlock, ast_queue_frame(), DEADLOCK_AVOIDANCE, mgcp_subchannel::lock, and mgcp_subchannel::owner.

Referenced by handle_request(), and mgcp_queue_control().

{
   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

)

[static]

Definition at line 608 of file chan_mgcp.c.

References ast_channel_trylock, ast_channel_unlock, ast_queue_hangup(), DEADLOCK_AVOIDANCE, mgcp_subchannel::lock, and mgcp_subchannel::owner.

Referenced by attempt_transfer(), destroy_endpoint(), handle_request(), and handle_response().

{
   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 struct ast_frame * mgcp_read

(

struct ast_channel *

ast

)

[static, read]

Definition at line 1259 of file chan_mgcp.c.

References ast_mutex_lock(), ast_mutex_unlock(), f, mgcp_subchannel::lock, mgcp_rtp_read(), and ast_channel::tech_pvt.

{
   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 char * mgcp_reload	(	struct ast_cli_entry *	e,
		int	cmd,
		struct ast_cli_args *	a
	)			[static]

Definition at line 4311 of file chan_mgcp.c.

References ast_cli_args::argc, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_verbose, CLI_GENERATE, CLI_INIT, CLI_SUCCESS, ast_cli_entry::command, LOG_WARNING, mgcp_reload_lock, restart_monitor(), and ast_cli_entry::usage.

Referenced by reload(), and unload_module().

{
   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 struct ast_channel * mgcp_request	(	const char *	type,
		int	format,
		void *	data,
		int *	cause
	)			[static, read]

Definition at line 3524 of file chan_mgcp.c.

References AST_CAUSE_BUSY, AST_CAUSE_UNREGISTERED, ast_copy_string(), ast_log(), ast_mutex_unlock(), AST_STATE_DOWN, ast_strlen_zero(), ast_verb, mgcp_endpoint::call_forward, mgcp_endpoint::callwaiting, mgcp_endpoint::dnd, find_subchannel_and_lock(), has_voicemail(), mgcp_endpoint::hookstate, mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, mgcp_new(), MGCP_ONHOOK, mgcp_subchannel::next, mgcp_subchannel::owner, mgcp_subchannel::parent, restart_monitor(), and transmit_notify_request().

{
   int oldformat;
   struct mgcp_subchannel *sub;
   struct ast_channel *tmpc = NULL;
   char tmp[256];
   char *dest = data;

   oldformat = format;
   format &= capability;
   if (!format) {
      ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", format);
      return NULL;
   }
   ast_copy_string(tmp, dest, sizeof(tmp));
   if (ast_strlen_zero(tmp)) {
      ast_log(LOG_NOTICE, "MGCP Channels require an endpoint\n");
      return NULL;
   }
   sub = find_subchannel_and_lock(tmp, 0, NULL);
   if (!sub) {
      ast_log(LOG_WARNING, "Unable to find MGCP endpoint '%s'\n", tmp);
      *cause = AST_CAUSE_UNREGISTERED;
      return NULL;
   }
   
   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);
   ast_mutex_unlock(&sub->lock);
   if (!tmpc)
      ast_log(LOG_WARNING, "Unable to make channel for '%s'\n", tmp);
   restart_monitor();
   return tmpc;
}

static struct ast_frame* mgcp_rtp_read

(

struct mgcp_subchannel *

sub

)

[static, read]

Definition at line 1228 of file chan_mgcp.c.

References ast_debug, ast_dsp_process(), AST_FRAME_DTMF, AST_FRAME_VOICE, ast_log(), ast_null_frame, ast_rtp_read(), ast_set_read_format(), ast_set_write_format(), mgcp_endpoint::dsp, mgcp_endpoint::dtmfmode, f, ast_frame::frametype, LOG_NOTICE, MGCP_DTMF_INBAND, MGCP_DTMF_RFC2833, ast_channel::nativeformats, mgcp_subchannel::owner, mgcp_subchannel::parent, ast_channel::readformat, mgcp_subchannel::rtp, ast_frame::subclass, and ast_channel::writeformat.

Referenced by mgcp_read().

{
   /* Retrieve audio/etc from channel.  Assumes sub->lock is already held. */
   struct ast_frame *f;

   f = ast_rtp_read(sub->rtp);
   /* Don't send RFC2833 if we're not supposed to */
   if (f && (f->frametype == AST_FRAME_DTMF) && !(sub->parent->dtmfmode & MGCP_DTMF_RFC2833))
      return &ast_null_frame;
   if (sub->owner) {
      /* We already hold the channel lock */
      if (f->frametype == AST_FRAME_VOICE) {
         if (f->subclass != sub->owner->nativeformats) {
            ast_debug(1, "Oooh, format changed to %d\n", f->subclass);
            sub->owner->nativeformats = f->subclass;
            ast_set_read_format(sub->owner, sub->owner->readformat);
            ast_set_write_format(sub->owner, sub->owner->writeformat);
         }
         /* Courtesy fearnor aka alex@pilosoft.com */
         if ((sub->parent->dtmfmode & MGCP_DTMF_INBAND) && (sub->parent->dsp)) {
#if 0
            ast_log(LOG_NOTICE, "MGCP ast_dsp_process\n");
#endif
            f = ast_dsp_process(sub->owner, sub->parent->dsp, f);
         }
      }
   }
   return f;
}

static int mgcp_senddigit_begin	(	struct ast_channel *	ast,
		char	digit
	)			[static]

Definition at line 1315 of file chan_mgcp.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_senddigit_begin(), mgcp_endpoint::dtmfmode, mgcp_subchannel::lock, LOG_DEBUG, LOG_ERROR, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, MGCP_DTMF_RFC2833, mgcp_subchannel::parent, mgcp_subchannel::rtp, and ast_channel::tech_pvt.

{
   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_log(LOG_DEBUG, "Sending DTMF using inband/hybrid\n");
      res = -1; /* Let asterisk play inband indications */
   } else if (p->dtmfmode & MGCP_DTMF_RFC2833) {
      ast_log(LOG_DEBUG, "Sending DTMF using RFC2833");
      ast_rtp_senddigit_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
	)			[static]

Definition at line 1336 of file chan_mgcp.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_senddigit_end(), mgcp_endpoint::dtmfmode, mgcp_subchannel::lock, LOG_DEBUG, LOG_ERROR, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, MGCP_DTMF_RFC2833, mgcp_subchannel::parent, mgcp_subchannel::rtp, ast_channel::tech_pvt, and transmit_notify_request().

{
   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_log(LOG_DEBUG, "Stopping DTMF using inband/hybrid\n");
      res = -1; /* Tell Asterisk to stop inband indications */
   } else if (p->dtmfmode & MGCP_DTMF_RFC2833) {
      ast_log(LOG_DEBUG, "Stopping DTMF using RFC2833\n");
      tmp[0] = 'D';
      tmp[1] = '/';
      tmp[2] = digit;
      tmp[3] = '\0';
      transmit_notify_request(sub, tmp);
                ast_rtp_senddigit_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;
}

static int mgcp_set_rtp_peer	(	struct ast_channel *	chan,
		struct ast_rtp *	rtp,
		struct ast_rtp *	vrtp,
		struct ast_rtp *	trtp,
		int	codecs,
		int	nat_active
	)			[static]

Definition at line 3985 of file chan_mgcp.c.

References mgcp_subchannel::alreadygone, ast_channel::tech_pvt, and transmit_modify_with_sdp().

{
   /* 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, codecs);
      return 0;
   }
   return -1;
}

static void* mgcp_ss

(

void *

data

)

[static]

Definition at line 2663 of file chan_mgcp.c.

References ast_bridged_channel(), ast_canmatch_extension(), ast_copy_string(), ast_db_put(), ast_debug, ast_exists_extension(), ast_hangup(), ast_ignore_pattern(), ast_indicate(), ast_log(), ast_masq_park_call(), ast_matchmore_extension(), AST_MAX_EXTENSION, ast_parking_ext(), ast_pbx_run(), ast_pickup_call(), ast_pickup_ext(), ast_safe_sleep(), ast_say_digit_str(), ast_set_callerid(), ast_setstate(), AST_STATE_RING, ast_strlen_zero(), ast_verb, ast_waitfordigit(), mgcp_endpoint::call_forward, mgcp_endpoint::callreturn, mgcp_endpoint::callwaiting, mgcp_endpoint::cancallforward, chan, ast_channel::cid, ast_callerid::cid_ani, mgcp_endpoint::cid_name, ast_callerid::cid_num, mgcp_endpoint::cid_num, ast_channel::context, mgcp_endpoint::dnd, mgcp_endpoint::dtmf_buf, mgcp_endpoint::dtmfmode, exten, ast_channel::exten, mgcp_endpoint::hascallwaiting, mgcp_endpoint::hidecallerid, mgcp_endpoint::lastcallerid, len(), LOG_WARNING, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, mgcp_subchannel::next, mgcp_subchannel::owner, mgcp_subchannel::parent, ast_channel::rings, start_rtp(), ast_channel::tech_pvt, and transmit_notify_request().

Referenced by handle_hd_hf().

{
   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) {
      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));
               memset(p->dtmf_buf, 0, sizeof(p->dtmf_buf));
               ast_set_callerid(chan,
                  p->hidecallerid ? "" : p->cid_num,
                  p->hidecallerid ? "" : p->cid_name,
                  chan->cid.cid_ani ? 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, "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, "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, "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 (!strcmp(p->dtmf_buf, ast_parking_ext()) && 
         sub->next->owner && ast_bridged_channel(sub->next->owner)) {
         /* This is a three way call, the main call being a real channel, 
            and we're parking the first call. */
         ast_masq_park_call(ast_bridged_channel(sub->next->owner), chan, 0, NULL);
         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, chan->cid.cid_num) &&
            ((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, chan->cid.cid_num ? chan->cid.cid_num : "<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 mgcp_write	(	struct ast_channel *	ast,
		struct ast_frame *	frame
	)			[static]

Definition at line 1269 of file chan_mgcp.c.

References AST_FRAME_IMAGE, AST_FRAME_VOICE, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_write(), ast_frame::frametype, mgcp_subchannel::lock, LOG_WARNING, ast_channel::nativeformats, mgcp_subchannel::parent, ast_channel::readformat, mgcp_subchannel::rtp, mgcp_endpoint::singlepath, mgcp_endpoint::sub, ast_frame::subclass, ast_channel::tech_pvt, and ast_channel::writeformat.

{
   struct mgcp_subchannel *sub = ast->tech_pvt;
   int res = 0;
   if (frame->frametype != AST_FRAME_VOICE) {
      if (frame->frametype == AST_FRAME_IMAGE)
         return 0;
      else {
         ast_log(LOG_WARNING, "Can't send %d type frames with MGCP write\n", frame->frametype);
         return 0;
      }
   } else {
      if (!(frame->subclass & ast->nativeformats)) {
         ast_log(LOG_WARNING, "Asked to transmit frame type %d, while native formats is %d (read/write = %d/%d)\n",
            frame->subclass, ast->nativeformats, ast->readformat, ast->writeformat);
         return -1;
      }
   }
   if (sub) {
      ast_mutex_lock(&sub->lock);
      if ((sub->parent->sub == sub) || !sub->parent->singlepath) {
         if (sub->rtp) {
            res =  ast_rtp_write(sub->rtp, frame);
         }
      }
      ast_mutex_unlock(&sub->lock);
   }
   return res;
}

static int mgcpsock_read	(	int *	id,
		int	fd,
		short	events,
		void *	ignore
	)			[static]

Definition at line 3320 of file chan_mgcp.c.

References ast_debug, ast_free, ast_inet_ntoa(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), AST_SCHED_DEL, ast_strlen_zero(), ast_verbose, mgcp_request::data, mgcp_request::endpoint, errno, find_and_retrans(), find_subchannel_and_lock(), handle_request(), handle_response(), mgcp_request::headers, mgcp_request::identifier, mgcp_request::len, len(), mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, mgcp_gateway::msgs, mgcp_gateway::msgs_lock, mgcp_gateway::name, mgcp_message::next, mgcp_message::owner_ep, mgcp_message::owner_sub, mgcp_endpoint::parent, mgcp_subchannel::parent, parse(), mgcp_gateway::retransid, mgcp_message::seqno, mgcp_request::verb, and mgcp_request::version.

Referenced by do_monitor().

{
   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;
   if (mgcpdebug) {
      ast_verbose("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)) {
      /* 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 void mwi_event_cb	(	const struct ast_event *	event,
		void *	userdata
	)			[static]

Definition at line 454 of file chan_mgcp.c.

Referenced by build_gateway().

{
   /* This module does not handle MWI in an event-based manner.  However, it
    * subscribes to MWI for each mailbox that is configured so that the core
    * knows that we care about it.  Then, chan_mgcp will get the MWI from the
    * event cache instead of checking the mailbox directly. */
}

static void parse

(

struct mgcp_request *

req

)

[static]

Definition at line 1763 of file chan_mgcp.c.

References ast_log(), ast_strlen_zero(), ast_verbose, mgcp_request::data, mgcp_request::endpoint, f, mgcp_request::header, mgcp_request::headers, mgcp_request::identifier, mgcp_request::line, mgcp_request::lines, LOG_WARNING, MGCP_MAX_HEADERS, MGCP_MAX_LINES, mgcp_request::verb, and mgcp_request::version.

Referenced by acf_channel_read(), acf_meetme_info(), add_agent(), app_exec(), aqm_exec(), ast_parse_allow_disallow(), astman_get_variables(), conf_exec(), conf_run(), config_function_read(), cut_internal(), dial_exec_full(), dictate_exec(), directory_exec(), dundi_query_read(), dundi_result_read(), dundifunc_read(), enum_query_read(), enum_result_read(), execif_exec(), find_conf(), function_agent(), get_in_brackets(), handle_statechange(), iconv_read(), isAnsweringMachine(), isexten_function_read(), log_exec(), login_exec(), mgcpsock_read(), misdn_check_l2l1(), misdn_facility_exec(), misdn_set_opt_exec(), mixmonitor_exec(), oss_call(), oss_request(), park_call_exec(), pbx_builtin_background(), pbx_builtin_waitexten(), play_moh_exec(), pqm_exec(), privacy_exec(), process_echocancel(), ql_exec(), queue_exec(), rcvfax_exec(), record_exec(), reload_agents(), reload_queues(), retrydial_exec(), rqm_exec(), sayunixtime_exec(), sendtext_exec(), sla_trunk_exec(), smdi_msg_read(), smdi_msg_retrieve_read(), sms_exec(), sndfax_exec(), softhangup_exec(), speech_background(), start_moh_exec(), start_monitor_exec(), transfer_exec(), upqm_exec(), userevent_exec(), verbose_exec(), vm_execmain(), and zapateller_exec().

{
   /* Divide fields by NULL's */
   char *c;
   int f = 0;
   c = req->data;

   /* First header starts immediately */
   req->header[f] = c;
   while(*c) {
      if (*c == '\n') {
         /* We've got a new header */
         *c = 0;
#if 0
         printf("Header: %s (%d)\n", req->header[f], strlen(req->header[f]));
#endif         
         if (ast_strlen_zero(req->header[f])) {
            /* Line by itself means we're now in content */
            c++;
            break;
         }
         if (f >= MGCP_MAX_HEADERS - 1) {
            ast_log(LOG_WARNING, "Too many MGCP headers...\n");
         } else
            f++;
         req->header[f] = c + 1;
      } else if (*c == '\r') {
         /* Ignore but eliminate \r's */
         *c = 0;
      }
      c++;
   }
   /* Check for last header */
   if (!ast_strlen_zero(req->header[f])) 
      f++;
   req->headers = f;
   /* Now we process any mime content */
   f = 0;
   req->line[f] = c;
   while(*c) {
      if (*c == '\n') {
         /* We've got a new line */
         *c = 0;
#if 0
         printf("Line: %s (%d)\n", req->line[f], strlen(req->line[f]));
#endif         
         if (f >= MGCP_MAX_LINES - 1) {
            ast_log(LOG_WARNING, "Too many SDP lines...\n");
         } else
            f++;
         req->line[f] = c + 1;
      } else if (*c == '\r') {
         /* Ignore and eliminate \r's */
         *c = 0;
      }
      c++;
   }
   /* Check for last line */
   if (!ast_strlen_zero(req->line[f])) 
      f++;
   req->lines = f;
   /* Parse up the initial header */
   c = req->header[0];
   while(*c && *c < 33) c++;
   /* First the verb */
   req->verb = c;
   while(*c && (*c > 32)) c++;
   if (*c) {
      *c = '\0';
      c++;
      while(*c && (*c < 33)) c++;
      req->identifier = c;
      while(*c && (*c > 32)) c++;
      if (*c) {
         *c = '\0';
         c++;
         while(*c && (*c < 33)) c++;
         req->endpoint = c;
         while(*c && (*c > 32)) c++;
         if (*c) {
            *c = '\0';
            c++;
            while(*c && (*c < 33)) c++;
            req->version = c;
            while(*c && (*c > 32)) c++;
            while(*c && (*c < 33)) c++;
            while(*c && (*c > 32)) c++;
            *c = '\0';
         }
      }
   }
      
   if (mgcpdebug) {
      ast_verbose("Verb: '%s', Identifier: '%s', Endpoint: '%s', Version: '%s'\n",
         req->verb, req->identifier, req->endpoint, req->version);
      ast_verbose("%d headers, %d lines\n", req->headers, req->lines);
   }
   if (*c) 
      ast_log(LOG_WARNING, "Odd content, extra stuff left over ('%s')\n", c);
}

static int process_sdp	(	struct mgcp_subchannel *	sub,
		struct mgcp_request *	req
	)			[static]

Definition at line 1864 of file chan_mgcp.c.

References ast_gethostbyname(), ast_inet_ntoa(), ast_log(), ast_rtp_get_current_formats(), ast_rtp_pt_clear(), ast_rtp_set_m_type(), ast_rtp_set_peer(), ast_rtp_set_rtpmap_type(), ast_strdupa, ast_strlen_zero(), ast_verbose, mgcp_endpoint::capability, get_sdp(), get_sdp_iterate(), hp, len(), LOG_WARNING, mgcp_endpoint::nonCodecCapability, mgcp_subchannel::parent, mgcp_subchannel::rtp, and sdpLineNum_iterator_init().

Referenced by handle_response().

{
   char *m;
   char *c;
   char *a;
   char host[258];
   int len;
   int portno;
   int peercapability, peerNonCodecCapability;
   struct sockaddr_in sin;
   char *codecs;
   struct ast_hostent ahp; struct hostent *hp;
   int codec, codec_count=0;
   int iterator;
   struct mgcp_endpoint *p = sub->parent;

   /* Get codec and RTP info from SDP */
   m = get_sdp(req, "m");
   c = get_sdp(req, "c");
   if (ast_strlen_zero(m) || ast_strlen_zero(c)) {
      ast_log(LOG_WARNING, "Insufficient information for SDP (m = '%s', c = '%s')\n", m, c);
      return -1;
   }
   if (sscanf(c, "IN IP4 %256s", host) != 1) {
      ast_log(LOG_WARNING, "Invalid host in c= line, '%s'\n", c);
      return -1;
   }
   /* XXX This could block for a long time, and block the main thread! XXX */
   hp = ast_gethostbyname(host, &ahp);
   if (!hp) {
      ast_log(LOG_WARNING, "Unable to lookup host in c= line, '%s'\n", c);
      return -1;
   }
   if (sscanf(m, "audio %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_rtp_set_peer(sub->rtp, &sin);
#if 0
   printf("Peer RTP is at port %s:%d\n", ast_inet_ntoa(sin.sin_addr), ntohs(sin.sin_port));
#endif   
   /* Scan through the RTP payload types specified in a "m=" line: */
   ast_rtp_pt_clear(sub->rtp);
   codecs = ast_strdupa(m + len);
   while (!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_set_m_type(sub->rtp, codec);
      codec_count++;
      codecs += len;
   }

   /* Next, scan through each "a=rtpmap:" line, noting each */
   /* specified RTP payload type (with corresponding MIME subtype): */
   sdpLineNum_iterator_init(&iterator);
   while ((a = get_sdp_iterate(&iterator, req, "a"))[0] != '\0') {
      char* mimeSubtype = ast_strdupa(a); /* ensures we have enough space */
      if (sscanf(a, "rtpmap: %30u %127[^/]/", &codec, mimeSubtype) != 2)
         continue;
      /* Note: should really look at the 'freq' and '#chans' params too */
      ast_rtp_set_rtpmap_type(sub->rtp, codec, "audio", mimeSubtype, 0);
   }

   /* Now gather all of the codecs that were asked for: */
   ast_rtp_get_current_formats(sub->rtp, &peercapability, &peerNonCodecCapability);
   p->capability = capability & peercapability;
   if (mgcpdebug) {
      ast_verbose("Capabilities: us - %d, them - %d, combined - %d\n",
         capability, peercapability, p->capability);
      ast_verbose("Non-codec capabilities: us - %d, them - %d, combined - %d\n",
         nonCodecCapability, peerNonCodecCapability, p->nonCodecCapability);
   }
   if (!p->capability) {
      ast_log(LOG_WARNING, "No compatible codecs!\n");
      return -1;
   }
   return 0;
}

static void prune_gateways

(

void

)

[static]

Definition at line 4059 of file chan_mgcp.c.

References ast_mutex_lock(), ast_mutex_unlock(), mgcp_gateway::delme, mgcp_endpoint::delme, destroy_endpoint(), destroy_gateway(), mgcp_gateway::endpoints, gatelock, gateways, mgcp_gateway::next, and mgcp_endpoint::next.

Referenced by reload_config(), and unload_module().

{
   struct mgcp_gateway *g, *z, *r;
   struct mgcp_endpoint *e, *p, *t;

   ast_mutex_lock(&gatelock);

   /* prune gateways */
   for (z = NULL, g = gateways; g;) {
      /* prune endpoints */
      for (p = NULL, e = g->endpoints; e; ) {
         if (e->delme || g->delme) {
            t = e;
            e = e->next;
            if (!p)
               g->endpoints = e;
            else
               p->next = e;
            destroy_endpoint(t);
         } else {
            p = e;
            e = e->next;
         }
      }

      if (g->delme) {
         r = g;
         g = g->next;
         if (!z)
            gateways = g;
         else
            z->next = g;

         destroy_gateway(r);
      } else {
         z = g;
         g = g->next;
      }
   }

   ast_mutex_unlock(&gatelock);
}

static int reload

(

void

)

[static]

Definition at line 4343 of file chan_mgcp.c.

References mgcp_reload().

{
   mgcp_reload(NULL, 0, NULL);
   return 0;
}

static int reload_config

(

int

reload

)

[static]

Definition at line 4102 of file chan_mgcp.c.

References __ourip, ast_category_browse(), ast_config_destroy(), ast_config_load, ast_getformatbyname(), ast_gethostbyname(), ast_inet_ntoa(), ast_io_remove(), ast_io_wait(), ast_jb_read_conf(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_netsock_set_qos(), ast_sched_runq(), ast_str2cos(), ast_str2tos(), ast_variable_browse(), ast_verb, bindaddr, build_gateway(), CONFIG_FLAG_FILEUNCHANGED, CONFIG_STATUS_FILEUNCHANGED, DEFAULT_MGCP_CA_PORT, mgcp_endpoint::delme, mgcp_gateway::delme, mgcp_gateway::endpoints, errno, format, gatelock, gateways, global_jbconf, hp, ast_variable::lineno, LOG_NOTICE, LOG_WARNING, mgcp_endpoint::name, mgcp_gateway::name, ast_variable::name, mgcp_endpoint::needaudit, netlock, mgcp_gateway::next, mgcp_endpoint::next, ast_variable::next, prune_gateways(), qos, transmit_audit_endpoint(), and ast_variable::value.

Referenced by do_monitor(), and load_module().

{
   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;
   int 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;

   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));

   v = ast_variable_browse(cfg, "general");
   while (v) {
      /* handle jb conf */
      if (!ast_jb_read_conf(&global_jbconf, v->name, v->value)) {
         v = v->next;
         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")) {
         format = ast_getformatbyname(v->value);
         if (format < 1) 
            ast_log(LOG_WARNING, "Cannot allow unknown format '%s'\n", v->value);
         else
            capability |= format;
      } else if (!strcasecmp(v->name, "disallow")) {
         format = ast_getformatbyname(v->value);
         if (format < 1) 
            ast_log(LOG_WARNING, "Cannot disallow unknown format '%s'\n", v->value);
         else
            capability &= ~format;
      } else if (!strcasecmp(v->name, "tos")) {
         if (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);
         }
      }
      v = v->next;
   }

   /* mark existing entries for deletion */
   ast_mutex_lock(&gatelock);
   g = gateways;
   while (g) {
      g->delme = 1;
      e = g->endpoints;
      while (e) {
         e->delme = 1;
         e = e->next;
      }
      g = g->next;
   }
   ast_mutex_unlock(&gatelock);
   
   cat = ast_category_browse(cfg, NULL);
   while(cat) {
      if (strcasecmp(cat, "general")) {
         ast_mutex_lock(&gatelock);
         g = build_gateway(cat, ast_variable_browse(cfg, cat));
         if (g) {
            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);
         }
      }
      cat = ast_category_browse(cfg, cat);
   }

      /* prune deleted entries etc. */
      prune_gateways();

   if (ntohl(bindaddr.sin_addr.s_addr)) {
      memcpy(&__ourip, &bindaddr.sin_addr, sizeof(__ourip));
   } else {
      hp = ast_gethostbyname(ourhost, &ahp);
      if (!hp) {
         ast_log(LOG_WARNING, "Unable to get our IP address, MGCP disabled\n");
         ast_config_destroy(cfg);
         return 0;
      }
      memcpy(&__ourip, hp->h_addr, sizeof(__ourip));
   }
   if (!ntohs(bindaddr.sin_port))
      bindaddr.sin_port = ntohs(DEFAULT_MGCP_CA_PORT);
   bindaddr.sin_family = AF_INET;
   ast_mutex_lock(&netlock);
   if (mgcpsock > -1)
      close(mgcpsock);

   if (mgcpsock_read_id != NULL)
      ast_io_remove(io, mgcpsock_read_id);
   mgcpsock_read_id = NULL;

   mgcpsock = socket(AF_INET, SOCK_DGRAM, 0);
   if (mgcpsock < 0) {
      ast_log(LOG_WARNING, "Unable to create MGCP socket: %s\n", strerror(errno));
   } else {
      if (bind(mgcpsock, (struct sockaddr *)&bindaddr, sizeof(bindaddr)) < 0) {
         ast_log(LOG_WARNING, "Failed to bind to %s:%d: %s\n",
            ast_inet_ntoa(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 */
   g = gateways;
   while (g) {
      e = g->endpoints;
      while (e && e->needaudit) {
         e->needaudit = 0;
         transmit_audit_endpoint(e);
         ast_verb(3, "MGCP Auditing endpoint %s@%s for hookstate\n", e->name, g->name);
         e = e->next;
      }
      g = g->next;
   }

   return 0;
}

static int reqprep	(	struct mgcp_request *	req,
		struct mgcp_endpoint *	p,
		char *	verb
	)			[static]

Definition at line 2041 of file chan_mgcp.c.

References init_req().

Referenced by transmit_audit_endpoint(), transmit_connect_with_sdp(), transmit_connection_del(), transmit_connection_del_w_params(), transmit_modify_request(), transmit_modify_with_sdp(), transmit_notify_request(), and transmit_notify_request_with_callerid().

{
   memset(req, 0, sizeof(struct mgcp_request));
   oseq++;
   if (oseq > 999999999)
      oseq = 1;
   init_req(p, req, verb);
   return 0;
}

static int resend_response	(	struct mgcp_subchannel *	sub,
		struct mgcp_response *	resp
	)			[static]

Definition at line 528 of file chan_mgcp.c.

References __mgcp_xmit(), mgcp_gateway::addr, ast_inet_ntoa(), ast_verbose, mgcp_response::buf, mgcp_response::len, mgcp_endpoint::parent, and mgcp_subchannel::parent.

Referenced by find_and_retrans().

{
   struct mgcp_endpoint *p = sub->parent;
   int res;
   if (mgcpdebug) {
      ast_verbose("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 respprep	(	struct mgcp_request *	resp,
		struct mgcp_endpoint *	p,
		char *	msg,
		struct mgcp_request *	req,
		char *	msgrest
	)			[static]

Definition at line 2034 of file chan_mgcp.c.

References init_resp().

Referenced by transmit_response().

{
   memset(resp, 0, sizeof(*resp));
   init_resp(resp, msg, req, msgrest);
   return 0;
}

static int restart_monitor

(

void

)

[static]

Definition at line 3495 of file chan_mgcp.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_pthread_create_background, AST_PTHREADT_NULL, AST_PTHREADT_STOP, do_monitor(), LOG_ERROR, LOG_WARNING, and monlock.

Referenced by load_module(), mgcp_reload(), and mgcp_request().

{
   /* 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 int retrans_pkt

(

const void *

data

)

[static]

Definition at line 631 of file chan_mgcp.c.

References __mgcp_xmit(), ast_free, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_verbose, handle_response(), LOG_WARNING, MAX_RETRANS, mgcp_gateway::msgs, mgcp_gateway::msgs_lock, mgcp_gateway::name, mgcp_message::next, mgcp_message::retrans, and mgcp_gateway::retransid.

Referenced by mgcp_postrequest().

{
   struct mgcp_gateway *gw = (struct mgcp_gateway *)data;
   struct mgcp_message *cur, *exq = NULL, *w, *prev;
   int res = 0;

   /* find out expired msgs */
   ast_mutex_lock(&gw->msgs_lock);

   prev = NULL, cur = gw->msgs;
   while (cur) {
      if (cur->retrans < MAX_RETRANS) {
         cur->retrans++;
         if (mgcpdebug) {
            ast_verbose("Retransmitting #%d transaction %u on [%s]\n",
               cur->retrans, cur->seqno, gw->name);
         }
         __mgcp_xmit(gw, cur->buf, cur->len);

         prev = cur;
         cur = cur->next;
      } else {
         if (prev)
            prev->next = cur->next;
         else
            gw->msgs = cur->next;

         ast_log(LOG_WARNING, "Maximum retries exceeded for transaction %u on [%s]\n",
            cur->seqno, gw->name);

         w = cur;
         cur = cur->next;

         if (exq) {
            w->next = exq;
         } else {
            w->next = NULL;
         }
         exq = w;
      }
   }

   if (!gw->msgs) {
      gw->retransid = -1;
      res = 0;
   } else {
      res = 1;
   }
   ast_mutex_unlock(&gw->msgs_lock);

   while (exq) {
      cur = exq;
      /* time-out transaction */
      handle_response(cur->owner_ep, cur->owner_sub, 406, cur->seqno, NULL); 
      exq = exq->next;
      ast_free(cur);
   }

   return res;
}

static void sdpLineNum_iterator_init

(

int *

iterator

)

[static]

Definition at line 1588 of file chan_mgcp.c.

Referenced by process_sdp().

{
   *iterator = 0;
}

static int send_request	(	struct mgcp_endpoint *	p,
		struct mgcp_subchannel *	sub,
		struct mgcp_request *	req,
		unsigned int	seqno
	)			[static]

Definition at line 758 of file chan_mgcp.c.

References mgcp_gateway::addr, ast_debug, ast_free, ast_inet_ntoa(), ast_log(), ast_malloc, ast_mutex_lock(), ast_mutex_unlock(), ast_verbose, mgcp_request::cmd, mgcp_endpoint::cmd_queue, mgcp_endpoint::cmd_queue_lock, mgcp_subchannel::cx_queue, mgcp_subchannel::cx_queue_lock, mgcp_request::data, mgcp_request::len, LOG_WARNING, MGCP_CMD_CRCX, MGCP_CMD_DLCX, MGCP_CMD_MDCX, MGCP_CMD_RQNT, mgcp_postrequest(), mgcp_request::next, mgcp_endpoint::parent, mgcp_endpoint::rqnt_queue, mgcp_endpoint::rqnt_queue_lock, and mgcp_endpoint::slowsequence.

Referenced by transmit_audit_endpoint(), transmit_connect_with_sdp(), transmit_connection_del(), transmit_connection_del_w_params(), transmit_modify_request(), transmit_modify_with_sdp(), transmit_notify_request(), and transmit_notify_request_with_callerid().

{
   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 */
         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;
      }
   }

   r = ast_malloc(sizeof(*r));
   if (!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)) {
      if (mgcpdebug) {
         ast_verbose("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 {
      if (mgcpdebug) {
         ast_verbose("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 send_response	(	struct mgcp_subchannel *	sub,
		struct mgcp_request *	req
	)			[static]

Definition at line 541 of file chan_mgcp.c.

References __mgcp_xmit(), mgcp_gateway::addr, ast_inet_ntoa(), ast_verbose, mgcp_request::data, mgcp_request::len, mgcp_endpoint::parent, and mgcp_subchannel::parent.

Referenced by transmit_response().

{
   struct mgcp_endpoint *p = sub->parent;
   int res;
   if (mgcpdebug) {
      ast_verbose("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;
}

static void start_rtp

(

struct mgcp_subchannel *

sub

)

[static]

Definition at line 2636 of file chan_mgcp.c.

References ast_channel_set_fd(), ast_mutex_lock(), ast_mutex_unlock(), ast_random(), ast_rtp_destroy(), ast_rtp_fd(), ast_rtp_new_with_bindaddr(), ast_rtp_set_callback(), ast_rtp_set_data(), ast_rtp_setnat(), ast_rtp_setqos(), bindaddr, mgcp_subchannel::callid, mgcp_subchannel::lock, mgcp_subchannel::nat, mgcp_subchannel::owner, qos, mgcp_subchannel::rtp, transmit_connect_with_sdp(), and mgcp_subchannel::txident.

Referenced by handle_hd_hf(), handle_response(), mgcp_answer(), mgcp_call(), and mgcp_ss().

{
   ast_mutex_lock(&sub->lock);
   /* check again to be on the safe side */
   if (sub->rtp) {
      ast_rtp_destroy(sub->rtp);
      sub->rtp = NULL;
   }
   /* Allocate the RTP now */
   sub->rtp = ast_rtp_new_with_bindaddr(sched, io, 1, 0, bindaddr.sin_addr);
   if (sub->rtp && sub->owner)
      ast_channel_set_fd(sub->owner, 0, ast_rtp_fd(sub->rtp));
   if (sub->rtp) {
      ast_rtp_setqos(sub->rtp, qos.tos_audio, qos.cos_audio, "MGCP RTP");
      ast_rtp_setnat(sub->rtp, sub->nat);
   }
#if 0
   ast_rtp_set_callback(p->rtp, rtpready);
   ast_rtp_set_data(p->rtp, p);
#endif      
   /* Make a call*ID */
        snprintf(sub->callid, sizeof(sub->callid), "%08lx%s", ast_random(), sub->txident);
   /* Transmit the connection create */
   transmit_connect_with_sdp(sub, NULL);
   ast_mutex_unlock(&sub->lock);
}

static int transmit_audit_endpoint

(

struct mgcp_endpoint *

p

)

[static]

Definition at line 2355 of file chan_mgcp.c.

References add_header(), mgcp_request::cmd, MGCP_CMD_AUEP, reqprep(), send_request(), and mgcp_request::trid.

Referenced by handle_mgcp_audit_endpoint(), handle_request(), and reload_config().

{
   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);  /* SC */
}

static int transmit_connect_with_sdp	(	struct mgcp_subchannel *	sub,
		struct ast_rtp *	rtp
	)			[static]

Definition at line 2202 of file chan_mgcp.c.

References add_header(), add_sdp(), ast_copy_string(), AST_FORMAT_AUDIO_MASK, ast_rtp_lookup_mime_subtype(), ast_verb, mgcp_subchannel::callid, mgcp_endpoint::capability, mgcp_request::cmd, mgcp_subchannel::cxmode, mgcp_subchannel::id, MGCP_CMD_CRCX, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, mgcp_subchannel::parent, reqprep(), send_request(), mgcp_request::trid, and mgcp_subchannel::txident.

Referenced by start_rtp().

{
   struct mgcp_request resp;
   char local[256];
   char tmp[80];
   int x;
   struct mgcp_endpoint *p = sub->parent;

   ast_copy_string(local, "p:20", sizeof(local));
   for (x = 1; x <= AST_FORMAT_AUDIO_MASK; x <<= 1) {
      if (p->capability & x) {
         snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype(1, x, 0));
         strncat(local, tmp, sizeof(local) - strlen(local) - 1);
      }
   }
   if (mgcpdebug) {
      ast_verb(3, "Creating connection for %s@%s-%d in cxmode: %s callid: %s\n",
         p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode], sub->callid);
   }
   reqprep(&resp, p, "CRCX");
   add_header(&resp, "C", sub->callid);
   add_header(&resp, "L", local);
   add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
   /* 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);  /* SC */
}

static int transmit_connection_del

(

struct mgcp_subchannel *

sub

)

[static]

Definition at line 2368 of file chan_mgcp.c.

References add_header(), ast_verb, mgcp_subchannel::callid, mgcp_request::cmd, mgcp_subchannel::cxident, mgcp_subchannel::cxmode, mgcp_subchannel::id, MGCP_CMD_DLCX, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, mgcp_subchannel::parent, reqprep(), send_request(), mgcp_request::trid, and mgcp_subchannel::txident.

Referenced by destroy_endpoint(), handle_request(), handle_response(), mgcp_hangup(), and unalloc_sub().

{
   struct mgcp_endpoint *p = sub->parent;
   struct mgcp_request resp;

   if (mgcpdebug) {
      ast_verb(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);  /* SC */
}

static int transmit_connection_del_w_params	(	struct mgcp_endpoint *	p,
		char *	callid,
		char *	cxident
	)			[static]

Definition at line 2392 of file chan_mgcp.c.

References add_header(), ast_verb, mgcp_request::cmd, MGCP_CMD_DLCX, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, reqprep(), send_request(), mgcp_endpoint::sub, and mgcp_request::trid.

Referenced by handle_response().

{
   struct mgcp_request resp;

   if (mgcpdebug) {
      ast_verb(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);
}

static int transmit_modify_request

(

struct mgcp_subchannel *

sub

)

[static]

Definition at line 2310 of file chan_mgcp.c.

References add_header(), add_header_offhook(), ast_strlen_zero(), ast_verb, mgcp_subchannel::callid, mgcp_request::cmd, mgcp_subchannel::cxident, mgcp_subchannel::cxmode, mgcp_endpoint::hookstate, mgcp_subchannel::id, MGCP_CMD_MDCX, MGCP_OFFHOOK, MGCP_ONHOOK, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, mgcp_subchannel::parent, reqprep(), send_request(), mgcp_request::trid, and mgcp_subchannel::txident.

Referenced by handle_hd_hf(), handle_request(), mgcp_answer(), mgcp_call(), and mgcp_hangup().

{
   struct mgcp_request resp;
   struct mgcp_endpoint *p = sub->parent;

   if (ast_strlen_zero(sub->cxident)) {
      /* We don't have a CXident yet, store the destination and
         wait a bit */
      return 0;
   }
   if (mgcpdebug) {
      ast_verb(3, "Modified %s@%s-%d with new mode: %s on callid: %s\n",
         p->name, p->parent->name, sub->id, mgcp_cxmodes[sub->cxmode], sub->callid);
   }
   reqprep(&resp, p, "MDCX");
   add_header(&resp, "C", sub->callid);
   add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
   /* 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;
   }
   /* fill in new fields */
   resp.cmd = MGCP_CMD_MDCX;
   resp.trid = oseq;
   return send_request(p, sub, &resp, oseq); /* SC */
}

static int transmit_modify_with_sdp	(	struct mgcp_subchannel *	sub,
		struct ast_rtp *	rtp,
		int	codecs
	)			[static]

Definition at line 2166 of file chan_mgcp.c.

References add_header(), add_sdp(), ast_copy_string(), AST_FORMAT_AUDIO_MASK, ast_rtp_get_peer(), ast_rtp_lookup_mime_subtype(), ast_strlen_zero(), mgcp_subchannel::callid, mgcp_endpoint::capability, mgcp_request::cmd, mgcp_subchannel::cxident, mgcp_subchannel::cxmode, MGCP_CMD_MDCX, mgcp_subchannel::parent, reqprep(), send_request(), mgcp_subchannel::tmpdest, mgcp_request::trid, and mgcp_subchannel::txident.

Referenced by handle_response(), and mgcp_set_rtp_peer().

{
   struct mgcp_request resp;
   char local[256];
   char tmp[80];
   int x;
   struct mgcp_endpoint *p = sub->parent;

   if (ast_strlen_zero(sub->cxident) && rtp) {
      /* We don't have a CXident yet, store the destination and
         wait a bit */
      ast_rtp_get_peer(rtp, &sub->tmpdest);
      return 0;
   }
   ast_copy_string(local, "p:20", sizeof(local));
   for (x = 1; x <= AST_FORMAT_AUDIO_MASK; x <<= 1) {
      if (p->capability & x) {
         snprintf(tmp, sizeof(tmp), ", a:%s", ast_rtp_lookup_mime_subtype(1, x, 0));
         strncat(local, tmp, sizeof(local) - strlen(local) - 1);
      }
   }
   reqprep(&resp, p, "MDCX");
   add_header(&resp, "C", sub->callid);
   add_header(&resp, "L", local);
   add_header(&resp, "M", mgcp_cxmodes[sub->cxmode]);
   /* 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); /* SC */
}

static int transmit_notify_request	(	struct mgcp_subchannel *	sub,
		char *	tone
	)			[static]

Definition at line 2235 of file chan_mgcp.c.

References add_header(), add_header_offhook(), ast_copy_string(), ast_strlen_zero(), ast_verb, mgcp_request::cmd, mgcp_endpoint::curtone, mgcp_subchannel::cxmode, mgcp_endpoint::hookstate, mgcp_subchannel::id, MGCP_CMD_RQNT, MGCP_OFFHOOK, MGCP_ONHOOK, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, mgcp_subchannel::parent, reqprep(), mgcp_endpoint::rqnt_ident, send_request(), and mgcp_request::trid.

Referenced by do_monitor(), handle_hd_hf(), handle_request(), handle_response(), mgcp_answer(), mgcp_hangup(), mgcp_indicate(), mgcp_request(), mgcp_senddigit_end(), and mgcp_ss().

{
   struct mgcp_request resp;
   struct mgcp_endpoint *p = sub->parent;

   if (mgcpdebug) {
      ast_verb(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); /* SC */
   switch (p->hookstate) {
   case MGCP_ONHOOK:
      add_header(&resp, "R", "L/hd(N)");
      break;
   case MGCP_OFFHOOK:
      add_header_offhook(sub, &resp);
      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); /* SC */
}

static int transmit_notify_request_with_callerid	(	struct mgcp_subchannel *	sub,
		char *	tone,
		char *	callernum,
		char *	callername
	)			[static]

Definition at line 2264 of file chan_mgcp.c.

References add_header(), add_header_offhook(), ast_copy_string(), ast_localtime(), ast_strlen_zero(), ast_tvnow(), ast_verb, mgcp_request::cmd, mgcp_endpoint::curtone, mgcp_subchannel::cxmode, mgcp_endpoint::hookstate, mgcp_subchannel::id, mgcp_endpoint::lastcallerid, MGCP_CMD_RQNT, MGCP_OFFHOOK, MGCP_ONHOOK, mgcp_gateway::name, mgcp_endpoint::name, mgcp_endpoint::parent, mgcp_subchannel::parent, reqprep(), mgcp_endpoint::rqnt_ident, send_request(), ast_tm::tm_hour, ast_tm::tm_mday, ast_tm::tm_min, ast_tm::tm_mon, and mgcp_request::trid.

Referenced by mgcp_call(), and mgcp_hangup().

{
   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); /* SC */
   switch (p->hookstate) {
   case MGCP_ONHOOK:
      add_header(&resp, "R", "L/hd(N)");
      break;
   case MGCP_OFFHOOK:
      add_header_offhook(sub, &resp);
      break;
   }
   if (!ast_strlen_zero(tone2)) {
      add_header(&resp, "S", tone2);
   }
   if (mgcpdebug) {
      ast_verb(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);  /* SC */
}

static int transmit_response	(	struct mgcp_subchannel *	sub,
		char *	msg,
		struct mgcp_request *	req,
		char *	msgrest
	)			[static]

Definition at line 2051 of file chan_mgcp.c.

References ast_calloc, mgcp_response::buf, mgcp_request::data, mgcp_request::identifier, mgcp_response::len, mgcp_request::len, mgcp_response::next, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_gateway::responses, respprep(), send_response(), mgcp_response::seqno, and mgcp_response::whensent.

Referenced by handle_request().

{
   struct mgcp_request resp;
   struct mgcp_endpoint *p = sub->parent;
   struct mgcp_response *mgr;

   respprep(&resp, p, msg, req, msgrest);
   mgr = ast_calloc(1, sizeof(*mgr) + resp.len + 1);
   if (mgr) {
      /* 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 unalloc_sub

(

struct mgcp_subchannel *

sub

)

[static]

Definition at line 487 of file chan_mgcp.c.

References mgcp_subchannel::alreadygone, ast_debug, ast_log(), ast_rtp_destroy(), ast_strlen_zero(), mgcp_subchannel::callid, mgcp_subchannel::cxident, mgcp_subchannel::cxmode, dump_cmd_queues(), mgcp_subchannel::id, LOG_WARNING, MGCP_CX_INACTIVE, mgcp_gateway::name, mgcp_endpoint::name, mgcp_subchannel::outgoing, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, mgcp_endpoint::sub, mgcp_subchannel::tmpdest, and transmit_connection_del().

Referenced by attempt_transfer().

{
   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_destroy(sub->rtp);
      sub->rtp = NULL;
   }
   dump_cmd_queues(NULL, sub); /* SC */
   return 0;
}

static int unload_module

(

void

)

[static]

Definition at line 4349 of file chan_mgcp.c.

References ast_channel_register(), ast_channel_unregister(), ast_cli_unregister_multiple(), ast_log(), ast_mutex_lock(), ast_mutex_trylock(), ast_mutex_unlock(), AST_PTHREADT_NULL, AST_PTHREADT_STOP, ast_rtp_proto_unregister(), mgcp_endpoint::delme, mgcp_gateway::delme, mgcp_gateway::endpoints, gatelock, gateways, LOG_WARNING, mgcp_reload(), mgcp_reload_lock, monlock, mgcp_endpoint::next, mgcp_gateway::next, prune_gateways(), and sched_context_destroy().

{
   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_proto_unregister(&mgcp_rtp);
   ast_cli_unregister_multiple(cli_mgcp, sizeof(cli_mgcp) / sizeof(struct ast_cli_entry));
   sched_context_destroy(sched);

   return 0;
}

---

Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Media Gateway Control Protocol (MGCP)" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, .reload = reload, } [static]

Definition at line 4416 of file chan_mgcp.c.

struct in_addr __ourip [static]

Definition at line 218 of file chan_mgcp.c.

Referenced by build_gateway(), find_subchannel_and_lock(), and reload_config().

char accountcode[AST_MAX_ACCOUNT_CODE] = "" [static]

Definition at line 183 of file chan_mgcp.c.

int adsi = 0 [static]

Definition at line 189 of file chan_mgcp.c.

int amaflags = 0 [static]

Definition at line 187 of file chan_mgcp.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 4416 of file chan_mgcp.c.

struct sockaddr_in bindaddr [static]

Definition at line 405 of file chan_mgcp.c.

Referenced by reload_config(), and start_rtp().

int callreturn = 0 [static]

Definition at line 168 of file chan_mgcp.c.

int callwaiting = 0 [static]

Definition at line 166 of file chan_mgcp.c.

int cancallforward = 0 [static]

Definition at line 177 of file chan_mgcp.c.

int canreinvite = CANREINVITE [static]

Definition at line 181 of file chan_mgcp.c.

int capability = AST_FORMAT_ULAW [static]

Definition at line 214 of file chan_mgcp.c.

Referenced by build_setup(), iax2_call(), parse_setup(), set_config(), and set_local_capabilities().

char cid_name[AST_MAX_EXTENSION] = "" [static]

Definition at line 149 of file chan_mgcp.c.

Referenced by __oh323_new(), build_peer(), build_user(), check_access(), check_peer_ok(), check_user_full(), dahdi_handle_event(), dial_trunk(), misdn_new(), replace_cid(), set_pvt_defaults(), sip_call(), sla_ring_station(), and store_callerid().

char cid_num[AST_MAX_EXTENSION] = "" [static]

Definition at line 148 of file chan_mgcp.c.

Referenced by __oh323_new(), build_peer(), build_user(), check_access(), check_peer_ok(), check_user_full(), dahdi_handle_event(), dial_trunk(), misdn_new(), replace_cid(), set_pvt_defaults(), sla_ring_station(), socket_process(), and store_callerid().

struct ast_cli_entry cli_mgcp[] [static]

Definition at line 1196 of file chan_mgcp.c.

struct ast_cli_entry cli_mgcp_set_debug_deprecated = AST_CLI_DEFINE(handle_mgcp_set_debug_deprecated, "Enable/Disable MGCP debugging") [static]

Definition at line 1195 of file chan_mgcp.c.

const char config[] = "mgcp.conf" [static]

Definition at line 101 of file chan_mgcp.c.

char context[AST_MAX_EXTENSION] = "default" [static]

Definition at line 143 of file chan_mgcp.c.

unsigned int cos

Definition at line 160 of file chan_mgcp.c.

unsigned int cos_audio

Definition at line 161 of file chan_mgcp.c.

ast_group_t cur_callergroup = 0 [static]

Definition at line 154 of file chan_mgcp.c.

ast_group_t cur_pickupgroup = 0 [static]

Definition at line 155 of file chan_mgcp.c.

struct ast_jb_conf default_jbconf [static]

Global jitterbuffer configuration - by default, jb is disabled

Definition at line 90 of file chan_mgcp.c.

int dtmfmode = 0 [static]

Definition at line 151 of file chan_mgcp.c.

Referenced by set_local_capabilities().

int firstdigittimeout = 16000 [static]

Wait up to 16 seconds for first digit (FXO logic)

Definition at line 194 of file chan_mgcp.c.

ast_mutex_t gatelock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP ) [static]

gatelock: mutex for gateway/endpoint lists

Definition at line 401 of file chan_mgcp.c.

Referenced by find_subchannel_and_lock(), handle_mgcp_audit_endpoint(), handle_mgcp_show_endpoints(), mgcp_devicestate(), prune_gateways(), reload_config(), and unload_module().

struct mgcp_gateway * gateways [static]

Referenced by build_gateway(), do_monitor(), find_subchannel_and_lock(), handle_mgcp_audit_endpoint(), handle_mgcp_show_endpoints(), mgcp_devicestate(), prune_gateways(), reload_config(), and unload_module().

int gendigittimeout = 8000 [static]

How long to wait for following digits (FXO logic)

Definition at line 197 of file chan_mgcp.c.

struct ast_jb_conf global_jbconf [static]

Definition at line 98 of file chan_mgcp.c.

Referenced by mgcp_new(), and reload_config().

int immediate = 0 [static]

Definition at line 164 of file chan_mgcp.c.

struct io_context* io [static]

Definition at line 224 of file chan_mgcp.c.

char language[MAX_LANGUAGE] = "" [static]

Definition at line 145 of file chan_mgcp.c.

char mailbox[AST_MAX_EXTENSION] [static]

Definition at line 185 of file chan_mgcp.c.

Referenced by action_mailboxcount(), action_mailboxstatus(), add_peer_mailboxes(), add_peer_mwi_subs(), append_mailbox_mapping(), ast_event_hash_mwi(), build_peer(), chanspy_exec(), clear_peer_mailboxes(), disa_exec(), extenspy_exec(), get_cached_mwi(), has_voicemail(), mkintf(), notify_message(), peer_mailboxes_to_str(), realtime_directory(), unistim_send_mwi_to_peer(), and update_registry().

int matchdigittimeout = 3000 [static]

How long to wait for an extra digit, if there is an ambiguous match

Definition at line 200 of file chan_mgcp.c.

char* mgcp_cxmodes[] [static]

}

Definition at line 123 of file chan_mgcp.c.

ast_mutex_t mgcp_reload_lock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP ) [static]

Definition at line 397 of file chan_mgcp.c.

Referenced by do_monitor(), mgcp_reload(), and unload_module().

int mgcp_reloading = 0 [static]

Definition at line 398 of file chan_mgcp.c.

struct ast_rtp_protocol mgcp_rtp [static]

Initial value:

 {
   .type = "MGCP",
   .get_rtp_info = mgcp_get_rtp_peer,
   .set_rtp_peer = mgcp_set_rtp_peer,
}

Definition at line 3997 of file chan_mgcp.c.

struct ast_channel_tech mgcp_tech [static]

Definition at line 435 of file chan_mgcp.c.

int mgcpdebug = 0 [static]

Definition at line 221 of file chan_mgcp.c.

int mgcpsock = -1 [static]

Definition at line 403 of file chan_mgcp.c.

int* mgcpsock_read_id = NULL [static]

Definition at line 3407 of file chan_mgcp.c.

pthread_t monitor_thread = AST_PTHREADT_NULL [static]

This is the thread for the monitor which checks for input on the channels which are not currently in use.

Definition at line 210 of file chan_mgcp.c.

ast_mutex_t monlock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP ) [static]

Definition at line 206 of file chan_mgcp.c.

Referenced by do_monitor(), restart_monitor(), and unload_module().

char musicclass[MAX_MUSICCLASS] = "" [static]

Definition at line 146 of file chan_mgcp.c.

Referenced by ast_do_masquerade(), begin_dial_channel(), dial_exec_full(), findmeexec(), func_channel_write(), gtalk_new(), jingle_new(), local_call(), moh_handle_digit(), monitor_dial(), and set_moh_exec().

int nat = 0 [static]

Definition at line 152 of file chan_mgcp.c.

ast_mutex_t netlock = ((ast_mutex_t) PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP ) [static]

Protect the monitoring thread, so only one process can kill or start it, and not when it's doing something critical.

Definition at line 204 of file chan_mgcp.c.

Referenced by do_monitor(), and reload_config().

int nonCodecCapability = AST_RTP_DTMF [static]

Definition at line 215 of file chan_mgcp.c.

unsigned int oseq [static]

Definition at line 191 of file chan_mgcp.c.

char ourhost[MAXHOSTNAMELEN] [static]

Definition at line 217 of file chan_mgcp.c.

Referenced by ast_find_ourip().

int ourport [static]

Definition at line 219 of file chan_mgcp.c.

Referenced by build_contact(), initreqprep(), and transmit_notify_with_mwi().

char parkinglot[AST_MAX_CONTEXT] [static]

Definition at line 147 of file chan_mgcp.c.

struct { ... } qos [static]

Referenced by reload_config(), and start_rtp().

struct sched_context* sched [static]

Definition at line 223 of file chan_mgcp.c.

int singlepath = 0 [static]

Definition at line 179 of file chan_mgcp.c.

int slowsequence = 0 [static]

Definition at line 170 of file chan_mgcp.c.

const char tdesc[] = "Media Gateway Control Protocol (MGCP)" [static]

Definition at line 100 of file chan_mgcp.c.

int threewaycalling = 0 [static]

Definition at line 172 of file chan_mgcp.c.

unsigned int tos

Definition at line 158 of file chan_mgcp.c.

unsigned int tos_audio

Definition at line 159 of file chan_mgcp.c.

int transfer = 0 [static]

This is for flashhook transfers

Definition at line 175 of file chan_mgcp.c.

Referenced by leave_voicemail(), and send_packet().