Thu Apr 28 2011 16:56:59

Asterisk developer's documentation


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 DEFAULT_EXPIRY   120
#define DEFAULT_MGCP_CA_PORT   2727
#define DEFAULT_MGCP_GW_PORT   2427
#define DEFAULT_RETRANS   1000
#define DIRECTMEDIA   1
#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_gatewaybuild_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_requestfind_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_subchannelfind_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_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_channelmgcp_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_framemgcp_read (struct ast_channel *ast)
static char * mgcp_reload (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static struct ast_channelmgcp_request (const char *type, int format, void *data, int *cause)
static struct ast_framemgcp_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
__MODULE_INFO_SECTION 
__mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Media Gateway Control Protocol (MGCP)" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .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_infoast_module_info = &__mod_info
static struct sockaddr_in bindaddr
static int callreturn = 0
static int callwaiting = 0
static int cancallforward = 0
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 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 directmedia = DIRECTMEDIA
static int dtmfmode = 0
static int firstdigittimeout = 16000
static ast_mutex_t gatelock = AST_MUTEX_INIT_VALUE
 gatelock: mutex for gateway/endpoint lists
static struct mgcp_gatewaygateways
static int gendigittimeout = 8000
static struct ast_jb_conf global_jbconf
static int immediate = 0
static struct io_contextio
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_INIT_VALUE
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_INIT_VALUE
static char musicclass [MAX_MUSICCLASS] = ""
static int nat = 0
static ast_mutex_t netlock = AST_MUTEX_INIT_VALUE
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_contextsched
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

Definition in file chan_mgcp.c.


Define Documentation

#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 mgcp_postrequest().

#define DIRECTMEDIA   1

Definition at line 83 of file chan_mgcp.c.

Referenced by build_gateway().

#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(), and destroy_endpoint().

#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)
#define MGCP_DTMF_INBAND   (1 << 1)
#define MGCP_DTMF_RFC2833   (1 << 0)
#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_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_gateway(), do_monitor(), and mgcp_call().

#define TYPE_TRUNK   1

Definition at line 305 of file chan_mgcp.c.

Referenced by 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.


Function Documentation

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

Definition at line 1581 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 4397 of file chan_mgcp.c.

static void __unreg_module ( void  ) [static]

Definition at line 4397 of file chan_mgcp.c.

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

Definition at line 1927 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]
static int add_line ( struct mgcp_request req,
char *  line 
) [static]

Definition at line 1949 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 2050 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 2887 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, ast_channel::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 3555 of file chan_mgcp.c.

References __ourip, mgcp_endpoint::accountcode, mgcp_gateway::addr, adsi, mgcp_endpoint::adsi, amaflags, 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, callreturn, mgcp_endpoint::callreturn, callwaiting, mgcp_endpoint::callwaiting, cancallforward, mgcp_endpoint::cancallforward, capability, mgcp_endpoint::capability, mgcp_endpoint::cid_name, mgcp_endpoint::cid_num, mgcp_endpoint::cmd_queue_lock, mgcp_endpoint::context, cur_callergroup, cur_pickupgroup, mgcp_subchannel::cx_queue_lock, mgcp_subchannel::cxmode, mgcp_gateway::defaddr, DEFAULT_MGCP_GW_PORT, mgcp_endpoint::delme, mgcp_gateway::delme, directmedia, mgcp_endpoint::directmedia, DIRECTMEDIA, dtmfmode, 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, immediate, 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, nat, 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, singlepath, mgcp_endpoint::singlepath, slowsequence, mgcp_endpoint::slowsequence, strsep(), mgcp_endpoint::sub, threewaycalling, mgcp_endpoint::threewaycalling, transfer, 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;
   directmedia = DIRECTMEDIA;

   /* 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, "directmedia") || !strcasecmp(v->name, "canreinvite")) {
            directmedia = ast_true(v->value);
         } else if (!strcasecmp(v->name, "mailbox")) {
            ast_copy_string(mailbox, v->value, sizeof(mailbox));
         } else if (!strcasecmp(v->name, "hasvoicemail")) {
            if (ast_true(v->value) && ast_strlen_zero(mailbox)) {
               ast_copy_string(mailbox, gw->name, sizeof(mailbox));
            }
         } else if (!strcasecmp(v->name, "adsi")) {
            adsi = ast_true(v->value);
         } else if (!strcasecmp(v->name, "callreturn")) {
            callreturn = ast_true(v->value);
         } else if (!strcasecmp(v->name, "callwaiting")) {
            callwaiting = ast_true(v->value);
         } else if (!strcasecmp(v->name, "slowsequence")) {
            slowsequence = ast_true(v->value);
         } else if (!strcasecmp(v->name, "transfer")) {
            transfer = ast_true(v->value);
         } else if (!strcasecmp(v->name, "threewaycalling")) {
            threewaycalling = ast_true(v->value);
         } else if (!strcasecmp(v->name, "wcardep")) {
            /* locate existing endpoint */
            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->directmedia = directmedia;
               e->callwaiting = callwaiting;
               e->hascallwaiting = callwaiting;
               e->slowsequence = slowsequence;
               e->transfer = transfer;
               e->threewaycalling = threewaycalling;
               e->onhooktime = time(NULL);
               /* ASSUME we're onhook */
               e->hookstate = MGCP_ONHOOK;
               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->directmedia = directmedia;
               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 1394 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]
static void destroy_gateway ( struct mgcp_gateway g) [static]

Definition at line 4026 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 3386 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, mgcp_reloading, 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 2391 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 3265 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 2425 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 1628 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 1607 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 1600 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 1552 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 1542 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 1570 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 2941 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 1142 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_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 3023 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 2456 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 init_req ( struct mgcp_endpoint p,
struct mgcp_request req,
char *  verb 
) [static]

Definition at line 1989 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 1972 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 4259 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_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, ast_var_t::entries, mgcp_endpoint::hookstate, mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, MGCP_CX_RECVONLY, MGCP_CX_SENDRECV, MGCP_OFFHOOK, MGCP_ONHOOK, ast_channel::name, 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:
datatech/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 1346 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 1273 of file chan_mgcp.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), mgcp_subchannel::lock, LOG_NOTICE, LOG_WARNING, ast_channel::name, 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 3947 of file chan_mgcp.c.

References AST_RTP_GET_FAILED, AST_RTP_TRY_NATIVE, AST_RTP_TRY_PARTIAL, mgcp_endpoint::directmedia, 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->directmedia)
      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, ast_channel::name, mgcp_subchannel::next, mgcp_subchannel::outgoing, mgcp_subchannel::owner, mgcp_endpoint::parent, mgcp_subchannel::parent, mgcp_subchannel::rtp, ast_module_info::self, 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 1426 of file chan_mgcp.c.

References AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_RINGING, AST_CONTROL_SRCCHANGE, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, ast_log(), ast_moh_start(), ast_moh_stop(), ast_mutex_lock(), ast_mutex_unlock(), ast_rtp_change_source(), ast_rtp_new_source(), ast_verb, control2str(), mgcp_subchannel::lock, LOG_WARNING, ast_channel::name, 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 AST_CONTROL_SRCCHANGE:
      ast_rtp_change_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 1473 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, capability, 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, mgcp_tech, ast_channel::name, 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_module_info::self, mgcp_endpoint::sub, 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, len(), 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]
static struct ast_frame * mgcp_read ( struct ast_channel ast) [static, read]

Definition at line 1233 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 4292 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 3501 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, capability, ast_channel::data, mgcp_endpoint::dnd, find_subchannel_and_lock(), format, 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 1202 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 1289 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 1310 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 3962 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 2640 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, ast_channel::data, mgcp_endpoint::dnd, mgcp_endpoint::dtmf_buf, mgcp_endpoint::dtmfmode, exten, ast_channel::exten, firstdigittimeout, gendigittimeout, mgcp_endpoint::hascallwaiting, mgcp_endpoint::hidecallerid, ast_channel::language, mgcp_endpoint::lastcallerid, len(), LOG_WARNING, matchdigittimeout, MGCP_DTMF_HYBRID, MGCP_DTMF_INBAND, ast_channel::name, 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 1243 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 3297 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 1740 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(), confbridge_exec(), 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(), originate_exec(), oss_call(), oss_request(), page_exec(), park_call_exec(), pbx_builtin_answer(), pbx_builtin_background(), pbx_builtin_waitexten(), play_moh_exec(), pqm_exec(), privacy_exec(), ql_exec(), queue_exec(), rcvfax_exec(), record_exec(), reload_agents(), reload_single_member(), 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 1841 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 4036 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 4324 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 4079 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_FILEINVALID, 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_ERROR, 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;
   } else if (cfg == CONFIG_STATUS_FILEINVALID) {
      ast_log(LOG_ERROR, "Config file %s is in an invalid format.  Aborting.\n", config);
      return 0;
   }

   memset(&bindaddr, 0, sizeof(bindaddr));
   dtmfmode = 0;

   /* Copy the default jb config over global_jbconf */
   memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));

   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]
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 2011 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 3472 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 1565 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 2613 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 2332 of file chan_mgcp.c.

References add_header(), mgcp_request::cmd, MGCP_CMD_AUEP, oseq, 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 2179 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, oseq, 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 2345 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, oseq, 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 2369 of file chan_mgcp.c.

References add_header(), ast_verb, mgcp_request::cmd, MGCP_CMD_DLCX, mgcp_gateway::name, mgcp_endpoint::name, oseq, 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 2287 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, oseq, 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 2143 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, oseq, 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 2212 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, oseq, 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 2241 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, oseq, 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 2028 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 4330 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 __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Media Gateway Control Protocol (MGCP)" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .reload = reload, } [static]

Definition at line 4397 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.

Referenced by build_gateway().

int amaflags = 0 [static]

Definition at line 187 of file chan_mgcp.c.

Referenced by build_gateway().

Definition at line 4397 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.

Referenced by build_gateway().

int callwaiting = 0 [static]

Definition at line 166 of file chan_mgcp.c.

Referenced by build_gateway().

int cancallforward = 0 [static]

Definition at line 177 of file chan_mgcp.c.

Referenced by build_gateway().

struct ast_cli_entry cli_mgcp[] [static]

Definition at line 1170 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.

Definition at line 154 of file chan_mgcp.c.

Referenced by build_gateway().

Definition at line 155 of file chan_mgcp.c.

Referenced by build_gateway().

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 directmedia = DIRECTMEDIA [static]

Definition at line 181 of file chan_mgcp.c.

Referenced by build_gateway().

int dtmfmode = 0 [static]

Definition at line 151 of file chan_mgcp.c.

Referenced by build_gateway(), and 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.

Referenced by mgcp_ss().

ast_mutex_t gatelock = AST_MUTEX_INIT_VALUE [static]
int gendigittimeout = 8000 [static]

How long to wait for following digits (FXO logic)

Definition at line 197 of file chan_mgcp.c.

Referenced by mgcp_ss().

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.

Referenced by build_gateway().

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.

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.

Referenced by mgcp_ss().

char* mgcp_cxmodes[] [static]

}

Definition at line 123 of file chan_mgcp.c.

ast_mutex_t mgcp_reload_lock = AST_MUTEX_INIT_VALUE [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.

Referenced by do_monitor().

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 3974 of file chan_mgcp.c.

struct ast_channel_tech mgcp_tech [static]

Definition at line 435 of file chan_mgcp.c.

Referenced by mgcp_new().

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 3384 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_INIT_VALUE [static]

Definition at line 206 of file chan_mgcp.c.

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

int nat = 0 [static]

Definition at line 152 of file chan_mgcp.c.

Referenced by ast_rtp_setnat(), ast_udptl_setnat(), and build_gateway().

ast_mutex_t netlock = AST_MUTEX_INIT_VALUE [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.

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.

Referenced by build_gateway().

int slowsequence = 0 [static]

Definition at line 170 of file chan_mgcp.c.

Referenced by build_gateway().

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.

Referenced by build_gateway().

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 build_gateway(), iax2_send(), leave_voicemail(), and send_packet().