Mon Mar 12 2012 21:38:46

Asterisk developer's documentation

Data Structures | Defines | Typedefs | Functions | Variables
dial.c File Reference

Dialing API. More...

#include "asterisk.h"
#include <sys/time.h>
#include <signal.h>
#include "asterisk/channel.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/linkedlists.h"
#include "asterisk/dial.h"
#include "asterisk/pbx.h"
#include "asterisk/musiconhold.h"
#include "asterisk/app.h"
Include dependency graph for dial.c:

Go to the source code of this file.

Data Structures

struct  answer_exec_struct
 Structure for 'ANSWER_EXEC' option. More...
struct  ast_dial
 Main dialing structure. Contains global options, channels being dialed, and more! More...
struct  ast_dial_channel
 Dialing channel structure. Contains per-channel dialing options, asterisk channel, and more! More...
struct  ast_option_types
 Options structure - maps options to respective handlers (enable/disable). This list MUST be perfectly kept in order, or else madness will happen. More...

Defines

#define AST_MAX_WATCHERS   256
 Maximum number of channels we can watch at a time.
#define FIND_RELATIVE_OPTION(dial, dial_channel, ast_dial_option)   (dial_channel->options[ast_dial_option] ? dial_channel->options[ast_dial_option] : dial->options[ast_dial_option])
 Macro for finding the option structure to use on a dialed channel.
#define IS_CALLER(chan, owner)   (chan == owner ? 1 : 0)
 Macro that determines whether a channel is the caller or not.

Typedefs

typedef int(* ast_dial_option_cb_disable )(void *data)
 Typedef for dial option disable.
typedef void *(* ast_dial_option_cb_enable )(void *data)
 Typedef for dial option enable.

Functions

static int answer_exec_disable (void *data)
 Disable function for 'ANSWER_EXEC' option.
static void * answer_exec_enable (void *data)
 Enable function for 'ANSWER_EXEC' option.
static void answer_exec_run (struct ast_dial *dial, struct ast_dial_channel *dial_channel, char *app, char *args)
 Application execution function for 'ANSWER_EXEC' option.
struct ast_channel * ast_dial_answered (struct ast_dial *dial)
 Return channel that answered.
struct ast_channel * ast_dial_answered_steal (struct ast_dial *dial)
 Steal the channel that answered.
int ast_dial_append (struct ast_dial *dial, const char *tech, const char *device)
 Append a channel.
struct ast_dial * ast_dial_create (void)
 New dialing structure.
int ast_dial_destroy (struct ast_dial *dial)
 Destroys a dialing structure.
void ast_dial_hangup (struct ast_dial *dial)
 Hangup channels.
enum ast_dial_result ast_dial_join (struct ast_dial *dial)
 Cancel async thread.
int ast_dial_option_disable (struct ast_dial *dial, int num, enum ast_dial_option option)
 Disables an option per channel.
int ast_dial_option_enable (struct ast_dial *dial, int num, enum ast_dial_option option, void *data)
 Enables an option per channel.
int ast_dial_option_global_disable (struct ast_dial *dial, enum ast_dial_option option)
 Disables an option globally.
int ast_dial_option_global_enable (struct ast_dial *dial, enum ast_dial_option option, void *data)
 Enables an option globally.
enum ast_dial_result ast_dial_run (struct ast_dial *dial, struct ast_channel *chan, int async)
 Execute dialing synchronously or asynchronously.
void ast_dial_set_global_timeout (struct ast_dial *dial, int timeout)
 Set the maximum time (globally) allowed for trying to ring phones.
void ast_dial_set_state_callback (struct ast_dial *dial, ast_dial_state_callback callback)
 Set a callback for state changes.
void ast_dial_set_timeout (struct ast_dial *dial, int num, int timeout)
 Set the maximum time (per channel) allowed for trying to ring the phone.
enum ast_dial_result ast_dial_state (struct ast_dial *dial)
 Return state of dial.
static void * async_dial (void *data)
 Dial async thread function.
static int begin_dial (struct ast_dial *dial, struct ast_channel *chan)
 Helper function that does the beginning dialing per dial structure.
static int begin_dial_channel (struct ast_dial_channel *channel, struct ast_channel *chan)
 Helper function that does the beginning dialing per-appended channel.
static struct ast_dial_channel * find_dial_channel (struct ast_dial *dial, int num)
 Helper function for finding a channel in a dial structure based on number.
static struct ast_dial_channel * find_relative_dial_channel (struct ast_dial *dial, struct ast_channel *owner)
 Helper function that finds the dialed channel based on owner.
static int handle_call_forward (struct ast_dial *dial, struct ast_dial_channel *channel, struct ast_channel *chan)
 Helper function to handle channels that have been call forwarded.
static void handle_frame (struct ast_dial *dial, struct ast_dial_channel *channel, struct ast_frame *fr, struct ast_channel *chan)
 Helper function that handles control frames WITH owner.
static void handle_frame_ownerless (struct ast_dial *dial, struct ast_dial_channel *channel, struct ast_frame *fr)
 Helper function that handles control frames WITHOUT owner.
static int handle_timeout_trip (struct ast_dial *dial, struct timeval start)
 Helper function to handle when a timeout occurs on dialing attempt.
static enum ast_dial_result monitor_dial (struct ast_dial *dial, struct ast_channel *chan)
 Helper function that basically keeps tabs on dialing attempts.
static int music_disable (void *data)
static void * music_enable (void *data)
static void set_state (struct ast_dial *dial, enum ast_dial_result state)

Variables

static struct ast_option_types option_types []

Detailed Description

Dialing API.

Author:
Joshua Colp <jcolp@digium.com>

Definition in file dial.c.

Define Documentation

#define AST_MAX_WATCHERS   256

Maximum number of channels we can watch at a time.

Definition at line 178 of file dial.c.

Referenced by monitor_dial().

#define FIND_RELATIVE_OPTION (   dial,
  dial_channel,
  ast_dial_option 
)    (dial_channel->options[ast_dial_option] ? dial_channel->options[ast_dial_option] : dial->options[ast_dial_option])

Macro for finding the option structure to use on a dialed channel.

Definition at line 181 of file dial.c.

Referenced by handle_call_forward(), and monitor_dial().

#define IS_CALLER (   chan,
  owner 
)    (chan == owner ? 1 : 0)

Macro that determines whether a channel is the caller or not.

Definition at line 184 of file dial.c.

Referenced by monitor_dial().

Typedef Documentation

typedef int(* ast_dial_option_cb_disable)(void *data)

Typedef for dial option disable.

Definition at line 72 of file dial.c.

typedef void*(* ast_dial_option_cb_enable)(void *data)

Typedef for dial option enable.

Definition at line 69 of file dial.c.

Function Documentation

static int answer_exec_disable ( void *  data) [static]

Disable function for 'ANSWER_EXEC' option.

Definition at line 107 of file dial.c.

References answer_exec_struct::args, and ast_free.

{
   struct answer_exec_struct *answer_exec = data;

   /* Make sure we have a value */
   if (!answer_exec)
      return -1;

   /* If arguments are present, free them too */
   if (answer_exec->args)
      ast_free(answer_exec->args);

   /* This is simple - just free the structure */
   ast_free(answer_exec);

   return 0;
}
static void* answer_exec_enable ( void *  data) [static]

Enable function for 'ANSWER_EXEC' option.

Definition at line 81 of file dial.c.

References app, answer_exec_struct::app, args, answer_exec_struct::args, ast_calloc, ast_copy_string(), ast_strdup, ast_strdupa, and ast_strlen_zero().

{
   struct answer_exec_struct *answer_exec = NULL;
   char *app = ast_strdupa((char*)data), *args = NULL;

   /* Not giving any data to this option is bad, mmmk? */
   if (ast_strlen_zero(app))
      return NULL;

   /* Create new data structure */
   if (!(answer_exec = ast_calloc(1, sizeof(*answer_exec))))
      return NULL;
   
   /* Parse out application and arguments */
   if ((args = strchr(app, ','))) {
      *args++ = '\0';
      answer_exec->args = ast_strdup(args);
   }

   /* Copy application name */
   ast_copy_string(answer_exec->app, app, sizeof(answer_exec->app));

   return answer_exec;
}
static void answer_exec_run ( struct ast_dial *  dial,
struct ast_dial_channel *  dial_channel,
char *  app,
char *  args 
) [static]

Application execution function for 'ANSWER_EXEC' option.

Definition at line 141 of file dial.c.

References ast_hangup(), ast_mutex_lock, ast_mutex_unlock, AST_PTHREADT_STOP, ast_dial::lock, ast_dial_channel::owner, pbx_exec(), pbx_findapp(), and ast_dial::thread.

Referenced by monitor_dial().

{
   struct ast_channel *chan = dial_channel->owner;
   struct ast_app *ast_app = pbx_findapp(app);

   /* If the application was not found, return immediately */
   if (!ast_app)
      return;

   /* All is well... execute the application */
   pbx_exec(chan, ast_app, args);

   /* If another thread is not taking over hang up the channel */
   ast_mutex_lock(&dial->lock);
   if (dial->thread != AST_PTHREADT_STOP) {
      ast_hangup(chan);
      dial_channel->owner = NULL;
   }
   ast_mutex_unlock(&dial->lock);

   return;
}
struct ast_channel* ast_dial_answered ( struct ast_dial *  dial) [read]

Return channel that answered.

Note:
Returns the Asterisk channel that answered
Parameters:
dialDialing structure

Definition at line 743 of file dial.c.

References AST_DIAL_RESULT_ANSWERED, AST_LIST_FIRST, ast_dial::channels, and ast_dial::state.

Referenced by dial_trunk(), and sla_handle_dial_state_event().

{
   if (!dial)
      return NULL;

   return ((dial->state == AST_DIAL_RESULT_ANSWERED) ? AST_LIST_FIRST(&dial->channels)->owner : NULL);
}
struct ast_channel* ast_dial_answered_steal ( struct ast_dial *  dial) [read]

Steal the channel that answered.

Note:
Returns the Asterisk channel that answered and removes it from the dialing structure
Parameters:
dialDialing structure

Definition at line 755 of file dial.c.

References AST_DIAL_RESULT_ANSWERED, AST_LIST_FIRST, ast_dial::channels, and ast_dial::state.

Referenced by do_notify().

{
   struct ast_channel *chan = NULL;

   if (!dial)
      return NULL;

   if (dial->state == AST_DIAL_RESULT_ANSWERED) {
      chan = AST_LIST_FIRST(&dial->channels)->owner;
      AST_LIST_FIRST(&dial->channels)->owner = NULL;
   }

   return chan;
}
int ast_dial_append ( struct ast_dial *  dial,
const char *  tech,
const char *  device 
)

Append a channel.

Note:
Appends a channel to a dialing structure
Returns:
Returns channel reference number on success, -1 on failure

Definition at line 218 of file dial.c.

References ast_atomic_fetchadd_int(), ast_calloc, AST_LIST_INSERT_TAIL, ast_strdup, ast_dial::channels, ast_dial_channel::device, ast_dial_channel::list, ast_dial::num, ast_dial_channel::num, ast_dial_channel::tech, and ast_dial_channel::timeout.

Referenced by dial_trunk(), do_notify(), page_exec(), and sla_ring_station().

{
   struct ast_dial_channel *channel = NULL;

   /* Make sure we have required arguments */
   if (!dial || !tech || !device)
      return -1;

   /* Allocate new memory for dialed channel structure */
   if (!(channel = ast_calloc(1, sizeof(*channel))))
      return -1;

   /* Record technology and device for when we actually dial */
   channel->tech = ast_strdup(tech);
   channel->device = ast_strdup(device);

   /* Grab reference number from dial structure */
   channel->num = ast_atomic_fetchadd_int(&dial->num, +1);

   /* No timeout exists... yet */
   channel->timeout = -1;

   /* Insert into channels list */
   AST_LIST_INSERT_TAIL(&dial->channels, channel, list);

   return channel->num;
}
struct ast_dial* ast_dial_create ( void  ) [read]

New dialing structure.

Note:
Create a dialing structure
Returns:
Returns a calloc'd ast_dial structure, NULL on failure

Definition at line 190 of file dial.c.

References ast_dial::actual_timeout, ast_calloc, AST_LIST_HEAD_INIT, ast_mutex_init, AST_PTHREADT_NULL, ast_dial::channels, ast_dial::lock, ast_dial::thread, and ast_dial::timeout.

Referenced by dial_trunk(), do_notify(), page_exec(), and sla_ring_station().

{
   struct ast_dial *dial = NULL;

   /* Allocate new memory for structure */
   if (!(dial = ast_calloc(1, sizeof(*dial))))
      return NULL;

   /* Initialize list of channels */
   AST_LIST_HEAD_INIT(&dial->channels);

   /* Initialize thread to NULL */
   dial->thread = AST_PTHREADT_NULL;

   /* No timeout exists... yet */
   dial->timeout = -1;
   dial->actual_timeout = -1;

   /* Can't forget about the lock */
   ast_mutex_init(&dial->lock);

   return dial;
}
int ast_dial_destroy ( struct ast_dial *  dial)

Destroys a dialing structure.

Note:
Destroys (free's) the given ast_dial structure
Parameters:
dialDialing structure to free
Returns:
Returns 0 on success, -1 on failure

Definition at line 855 of file dial.c.

References AST_DIAL_OPTION_MAX, ast_free, ast_hangup(), AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, ast_mutex_destroy, ast_dial::channels, ast_dial_channel::device, ast_option_types::disable, ast_dial_channel::list, ast_dial::lock, option_types, ast_dial::options, ast_dial_channel::options, ast_dial_channel::owner, and ast_dial_channel::tech.

Referenced by dial_trunk(), do_notify(), page_exec(), run_station(), sla_hangup_stations(), sla_ring_station(), and sla_stop_ringing_station().

{
   int i = 0;
   struct ast_dial_channel *channel = NULL;

   if (!dial)
      return -1;
   
   /* Hangup and deallocate all the dialed channels */
   AST_LIST_LOCK(&dial->channels);
   AST_LIST_TRAVERSE_SAFE_BEGIN(&dial->channels, channel, list) {
      /* Disable any enabled options */
      for (i = 0; i < AST_DIAL_OPTION_MAX; i++) {
         if (!channel->options[i])
            continue;
         if (option_types[i].disable)
            option_types[i].disable(channel->options[i]);
         channel->options[i] = NULL;
      }
      /* Hang up channel if need be */
      if (channel->owner) {
         ast_hangup(channel->owner);
         channel->owner = NULL;
      }
      /* Free structure */
      ast_free(channel->tech);
      ast_free(channel->device);
      AST_LIST_REMOVE_CURRENT(list);
      ast_free(channel);
   }
   AST_LIST_TRAVERSE_SAFE_END;
   AST_LIST_UNLOCK(&dial->channels);
 
   /* Disable any enabled options globally */
   for (i = 0; i < AST_DIAL_OPTION_MAX; i++) {
      if (!dial->options[i])
         continue;
      if (option_types[i].disable)
         option_types[i].disable(dial->options[i]);
      dial->options[i] = NULL;
   }

   /* Lock be gone! */
   ast_mutex_destroy(&dial->lock);

   /* Free structure */
   ast_free(dial);

   return 0;
}
void ast_dial_hangup ( struct ast_dial *  dial)

Hangup channels.

Note:
Hangup all active channels
Parameters:
dialDialing structure

Definition at line 831 of file dial.c.

References ast_hangup(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_dial::channels, ast_dial_channel::list, and ast_dial_channel::owner.

Referenced by ast_dial_run(), and page_exec().

{
   struct ast_dial_channel *channel = NULL;

   if (!dial)
      return;
   
   AST_LIST_LOCK(&dial->channels);
   AST_LIST_TRAVERSE(&dial->channels, channel, list) {
      if (channel->owner) {
         ast_hangup(channel->owner);
         channel->owner = NULL;
      }
   }
   AST_LIST_UNLOCK(&dial->channels);

   return;
}
enum ast_dial_result ast_dial_join ( struct ast_dial *  dial)

Cancel async thread.

Note:
Cancel a running async thread
Parameters:
dialDialing structure

Definition at line 783 of file dial.c.

References ast_channel_lock, ast_channel_unlock, AST_DIAL_RESULT_FAILED, AST_LIST_FIRST, AST_LIST_LOCK, AST_LIST_UNLOCK, ast_mutex_lock, ast_mutex_unlock, AST_PTHREADT_NULL, AST_PTHREADT_STOP, ast_softhangup(), AST_SOFTHANGUP_EXPLICIT, ast_dial::channels, ast_dial::lock, ast_dial::state, and ast_dial::thread.

Referenced by dial_trunk(), page_exec(), run_station(), sla_hangup_stations(), sla_ring_station(), and sla_stop_ringing_station().

{
   pthread_t thread;

   /* If the dial structure is not running in async, return failed */
   if (dial->thread == AST_PTHREADT_NULL)
      return AST_DIAL_RESULT_FAILED;

   /* Record thread */
   thread = dial->thread;

   /* Boom, commence locking */
   ast_mutex_lock(&dial->lock);

   /* Stop the thread */
   dial->thread = AST_PTHREADT_STOP;

   /* If the answered channel is running an application we have to soft hangup it, can't just poke the thread */
   AST_LIST_LOCK(&dial->channels);
   if (AST_LIST_FIRST(&dial->channels)->is_running_app) {
      struct ast_channel *chan = AST_LIST_FIRST(&dial->channels)->owner;
      if (chan) {
         ast_channel_lock(chan);
         ast_softhangup(chan, AST_SOFTHANGUP_EXPLICIT);
         ast_channel_unlock(chan);
      }
   } else {
      /* Now we signal it with SIGURG so it will break out of it's waitfor */
      pthread_kill(thread, SIGURG);
   }
   AST_LIST_UNLOCK(&dial->channels);

   /* Yay done with it */
   ast_mutex_unlock(&dial->lock);

   /* Finally wait for the thread to exit */
   pthread_join(thread, NULL);

   /* Yay thread is all gone */
   dial->thread = AST_PTHREADT_NULL;

   return dial->state;
}
int ast_dial_option_disable ( struct ast_dial *  dial,
int  num,
enum ast_dial_option  option 
)

Disables an option per channel.

Parameters:
dialDial structure
numChannel number to disable option on
optionOption to disable
Returns:
Returns 0 on success, -1 on failure

Definition at line 1007 of file dial.c.

References AST_LIST_EMPTY, ast_dial::channels, ast_option_types::disable, find_dial_channel(), option_types, and ast_dial_channel::options.

{
   struct ast_dial_channel *channel = NULL;

   /* Ensure we have required arguments */
   if (!dial || AST_LIST_EMPTY(&dial->channels))
      return -1;

   if (!(channel = find_dial_channel(dial, num)))
      return -1;

   /* If the option is not enabled, return failure */
   if (!channel->options[option])
      return -1;

   /* Execute callback of option to disable it if it exists */
   if (option_types[option].disable)
      option_types[option].disable(channel->options[option]);

   /* Finally disable the option on the structure */
   channel->options[option] = NULL;

   return 0;
}
int ast_dial_option_enable ( struct ast_dial *  dial,
int  num,
enum ast_dial_option  option,
void *  data 
)

Enables an option per channel.

Parameters:
dialDial structure
numChannel number to enable option on
optionOption to enable
dataData to pass to this option (not always needed)
Returns:
Returns 0 on success, -1 on failure

Definition at line 955 of file dial.c.

References AST_LIST_EMPTY, ast_dial::channels, ast_option_types::enable, find_dial_channel(), option_types, and ast_dial_channel::options.

{
   struct ast_dial_channel *channel = NULL;

   /* Ensure we have required arguments */
   if (!dial || AST_LIST_EMPTY(&dial->channels))
      return -1;

   if (!(channel = find_dial_channel(dial, num)))
      return -1;

   /* If the option is already enabled, return failure */
   if (channel->options[option])
      return -1;

   /* Execute enable callback if it exists, if not simply make sure the value is set */
   if (option_types[option].enable)
      channel->options[option] = option_types[option].enable(data);
   else
      channel->options[option] = (void*)1;

   return 0;
}
int ast_dial_option_global_disable ( struct ast_dial *  dial,
enum ast_dial_option  option 
)

Disables an option globally.

Parameters:
dialDial structure to disable option on
optionOption to disable
Returns:
Returns 0 on success, -1 on failure

Definition at line 984 of file dial.c.

References ast_option_types::disable, option_types, and ast_dial::options.

{
   /* If the option is not enabled, return failure */
   if (!dial->options[option]) {
      return -1;
   }

   /* Execute callback of option to disable if it exists */
   if (option_types[option].disable)
      option_types[option].disable(dial->options[option]);

   /* Finally disable option on the structure */
   dial->options[option] = NULL;

   return 0;
}
int ast_dial_option_global_enable ( struct ast_dial *  dial,
enum ast_dial_option  option,
void *  data 
)

Enables an option globally.

Parameters:
dialDial structure to enable option on
optionOption to enable
dataData to pass to this option (not always needed)
Returns:
Returns 0 on success, -1 on failure

Definition at line 912 of file dial.c.

References ast_option_types::enable, option_types, and ast_dial::options.

Referenced by do_notify(), and page_exec().

{
   /* If the option is already enabled, return failure */
   if (dial->options[option])
      return -1;

   /* Execute enable callback if it exists, if not simply make sure the value is set */
   if (option_types[option].enable)
      dial->options[option] = option_types[option].enable(data);
   else
      dial->options[option] = (void*)1;

   return 0;
}
enum ast_dial_result ast_dial_run ( struct ast_dial *  dial,
struct ast_channel *  chan,
int  async 
)

Execute dialing synchronously or asynchronously.

Note:
Dials channels in a dial structure.
Returns:
Returns dial result code. (TRYING/INVALID/FAILED/ANSWERED/TIMEOUT/UNANSWERED).

Definition at line 703 of file dial.c.

References ast_debug, ast_dial_hangup(), AST_DIAL_RESULT_FAILED, AST_DIAL_RESULT_INVALID, AST_DIAL_RESULT_TRYING, AST_LIST_EMPTY, ast_pthread_create, async_dial(), begin_dial(), ast_dial::channels, monitor_dial(), ast_dial::state, and ast_dial::thread.

Referenced by dial_trunk(), do_notify(), page_exec(), and sla_ring_station().

{
   enum ast_dial_result res = AST_DIAL_RESULT_TRYING;

   /* Ensure required arguments are passed */
   if (!dial || (!chan && !async)) {
      ast_debug(1, "invalid #1\n");
      return AST_DIAL_RESULT_INVALID;
   }

   /* If there are no channels to dial we can't very well try to dial them */
   if (AST_LIST_EMPTY(&dial->channels)) {
      ast_debug(1, "invalid #2\n");
      return AST_DIAL_RESULT_INVALID;
   }

   /* Dial each requested channel */
   if (!begin_dial(dial, chan))
      return AST_DIAL_RESULT_FAILED;

   /* If we are running async spawn a thread and send it away... otherwise block here */
   if (async) {
      dial->state = AST_DIAL_RESULT_TRYING;
      /* Try to create a thread */
      if (ast_pthread_create(&dial->thread, NULL, async_dial, dial)) {
         /* Failed to create the thread - hangup all dialed channels and return failed */
         ast_dial_hangup(dial);
         res = AST_DIAL_RESULT_FAILED;
      }
   } else {
      res = monitor_dial(dial, chan);
   }

   return res;
}
void ast_dial_set_global_timeout ( struct ast_dial *  dial,
int  timeout 
)

Set the maximum time (globally) allowed for trying to ring phones.

Parameters:
dialThe dial structure to apply the time limit to
timeoutMaximum time allowed
Returns:
nothing

Definition at line 1042 of file dial.c.

References ast_dial::actual_timeout, and ast_dial::timeout.

Referenced by do_notify(), and page_exec().

{
   dial->timeout = timeout;

   if (dial->timeout > 0 && (dial->actual_timeout > dial->timeout || dial->actual_timeout == -1))
      dial->actual_timeout = dial->timeout;

   return;
}
void ast_dial_set_state_callback ( struct ast_dial *  dial,
ast_dial_state_callback  callback 
)

Set a callback for state changes.

Parameters:
dialThe dial structure to watch for state changes
callbackthe callback
Returns:
nothing

Definition at line 1032 of file dial.c.

References ast_dial::state_callback.

Referenced by sla_ring_station().

{
   dial->state_callback = callback;
}
void ast_dial_set_timeout ( struct ast_dial *  dial,
int  num,
int  timeout 
)

Set the maximum time (per channel) allowed for trying to ring the phone.

Parameters:
dialThe dial structure the channel belongs to
numChannel number to set timeout on
timeoutMaximum time allowed
Returns:
nothing

Definition at line 1058 of file dial.c.

References ast_dial::actual_timeout, find_dial_channel(), ast_dial::timeout, and ast_dial_channel::timeout.

{
   struct ast_dial_channel *channel = NULL;

   if (!(channel = find_dial_channel(dial, num)))
      return;

   channel->timeout = timeout;

   if (channel->timeout > 0 && (dial->actual_timeout > channel->timeout || dial->actual_timeout == -1))
      dial->actual_timeout = channel->timeout;

   return;
}
enum ast_dial_result ast_dial_state ( struct ast_dial *  dial)

Return state of dial.

Note:
Returns the state of the dial attempt
Parameters:
dialDialing structure

Definition at line 774 of file dial.c.

References ast_dial::state.

Referenced by dial_trunk(), and sla_handle_dial_state_event().

{
   return dial->state;
}
static void* async_dial ( void *  data) [static]

Dial async thread function.

Definition at line 689 of file dial.c.

References monitor_dial().

Referenced by ast_dial_run().

{
   struct ast_dial *dial = data;

   /* This is really really simple... we basically pass monitor_dial a NULL owner and it changes it's behavior */
   monitor_dial(dial, NULL);

   return NULL;
}
static int begin_dial ( struct ast_dial *  dial,
struct ast_channel *  chan 
) [static]

Helper function that does the beginning dialing per dial structure.

Definition at line 300 of file dial.c.

References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, begin_dial_channel(), ast_dial::channels, and ast_dial_channel::list.

Referenced by ast_dial_run().

{
   struct ast_dial_channel *channel = NULL;
   int success = 0;

   /* Iterate through channel list, requesting and calling each one */
   AST_LIST_LOCK(&dial->channels);
   AST_LIST_TRAVERSE(&dial->channels, channel, list) {
      success += begin_dial_channel(channel, chan);
   }
   AST_LIST_UNLOCK(&dial->channels);

   /* If number of failures matches the number of channels, then this truly failed */
   return success;
}
static int begin_dial_channel ( struct ast_dial_channel *  channel,
struct ast_channel *  chan 
) [static]

Helper function that does the beginning dialing per-appended channel.

Definition at line 247 of file dial.c.

References accountcode, ast_channel::accountcode, ast_channel::adsicpe, ast_channel::appl, ast_call(), ast_channel_datastore_inherit(), ast_channel_inherit_variables(), ast_connected_line_copy_from_caller(), ast_copy_string(), AST_FORMAT_AUDIO_MASK, ast_hangup(), AST_MAX_EXTENSION, ast_party_redirecting_copy(), ast_poll_channel_add(), ast_request(), ast_string_field_set, ast_strlen_zero(), ast_verb, ast_channel::caller, ast_dial_channel::cause, ast_channel::connected, ast_channel::data, ast_dial_channel::device, ast_channel::dialed, language, ast_channel::language, musicclass, ast_channel::musicclass, ast_channel::nativeformats, ast_dial_channel::owner, ast_channel::redirecting, ast_dial_channel::tech, ast_channel::transfercapability, ast_party_dialed::transit_network_select, and ast_channel::whentohangup.

Referenced by begin_dial(), and handle_call_forward().

{
   char numsubst[AST_MAX_EXTENSION];
   int res = 1;

   /* Copy device string over */
   ast_copy_string(numsubst, channel->device, sizeof(numsubst));

   /* If we fail to create our owner channel bail out */
   if (!(channel->owner = ast_request(channel->tech, chan ? chan->nativeformats : AST_FORMAT_AUDIO_MASK, chan, numsubst, &channel->cause)))
      return -1;

   channel->owner->appl = "AppDial2";
   channel->owner->data = "(Outgoing Line)";
   memset(&channel->owner->whentohangup, 0, sizeof(channel->owner->whentohangup));

   /* Inherit everything from he who spawned this dial */
   if (chan) {
      ast_channel_inherit_variables(chan, channel->owner);
      ast_channel_datastore_inherit(chan, channel->owner);

      /* Copy over callerid information */
      ast_party_redirecting_copy(&channel->owner->redirecting, &chan->redirecting);

      channel->owner->dialed.transit_network_select = chan->dialed.transit_network_select;

      ast_connected_line_copy_from_caller(&channel->owner->connected, &chan->caller);

      ast_string_field_set(channel->owner, language, chan->language);
      ast_string_field_set(channel->owner, accountcode, chan->accountcode);
      if (ast_strlen_zero(channel->owner->musicclass))
         ast_string_field_set(channel->owner, musicclass, chan->musicclass);

      channel->owner->adsicpe = chan->adsicpe;
      channel->owner->transfercapability = chan->transfercapability;
   }

   /* Attempt to actually call this device */
   if ((res = ast_call(channel->owner, numsubst, 0))) {
      res = 0;
      ast_hangup(channel->owner);
      channel->owner = NULL;
   } else {
      if (chan)
         ast_poll_channel_add(chan, channel->owner);
      res = 1;
      ast_verb(3, "Called %s\n", numsubst);
   }

   return res;
}
static struct ast_dial_channel* find_dial_channel ( struct ast_dial *  dial,
int  num 
) [static, read]

Helper function for finding a channel in a dial structure based on number.

Definition at line 929 of file dial.c.

References AST_LIST_LAST, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_dial::channels, ast_dial_channel::list, and ast_dial_channel::num.

Referenced by ast_dial_option_disable(), ast_dial_option_enable(), and ast_dial_set_timeout().

{
   struct ast_dial_channel *channel = AST_LIST_LAST(&dial->channels);

   /* We can try to predict programmer behavior, the last channel they added is probably the one they wanted to modify */
   if (channel->num == num)
      return channel;

   /* Hrm not at the end... looking through the list it is! */
   AST_LIST_LOCK(&dial->channels);
   AST_LIST_TRAVERSE(&dial->channels, channel, list) {
      if (channel->num == num)
         break;
   }
   AST_LIST_UNLOCK(&dial->channels);
   
   return channel;
}
static struct ast_dial_channel* find_relative_dial_channel ( struct ast_dial *  dial,
struct ast_channel *  owner 
) [static, read]

Helper function that finds the dialed channel based on owner.

Definition at line 356 of file dial.c.

References AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_dial::channels, ast_dial_channel::list, and ast_dial_channel::owner.

Referenced by monitor_dial().

{
   struct ast_dial_channel *channel = NULL;

   AST_LIST_LOCK(&dial->channels);
   AST_LIST_TRAVERSE(&dial->channels, channel, list) {
      if (channel->owner == owner)
         break;
   }
   AST_LIST_UNLOCK(&dial->channels);

   return channel;
}
static int handle_call_forward ( struct ast_dial *  dial,
struct ast_dial_channel *  channel,
struct ast_channel *  chan 
) [static]

Helper function to handle channels that have been call forwarded.

Definition at line 317 of file dial.c.

References AST_DIAL_OPTION_DISABLE_CALL_FORWARDING, ast_free, ast_hangup(), AST_LIST_UNLOCK, ast_strdup, ast_strdupa, begin_dial_channel(), ast_channel::call_forward, ast_dial::channels, ast_dial_channel::device, FIND_RELATIVE_OPTION, ast_dial_channel::owner, and ast_dial_channel::tech.

Referenced by monitor_dial().

{
   struct ast_channel *original = channel->owner;
   char *tmp = ast_strdupa(channel->owner->call_forward);
   char *tech = "Local", *device = tmp, *stuff;

   /* If call forwarding is disabled just drop the original channel and don't attempt to dial the new one */
   if (FIND_RELATIVE_OPTION(dial, channel, AST_DIAL_OPTION_DISABLE_CALL_FORWARDING)) {
      ast_hangup(original);
      channel->owner = NULL;
      return 0;
   }

   /* Figure out the new destination */
   if ((stuff = strchr(tmp, '/'))) {
      *stuff++ = '\0';
      tech = tmp;
      device = stuff;
   }

   /* Drop old destination information */
   ast_free(channel->tech);
   ast_free(channel->device);

   /* Update the dial channel with the new destination information */
   channel->tech = ast_strdup(tech);
   channel->device = ast_strdup(device);
   AST_LIST_UNLOCK(&dial->channels);

   /* Finally give it a go... send it out into the world */
   begin_dial_channel(channel, chan);

   /* Drop the original channel */
   ast_hangup(original);

   return 0;
}
static void handle_frame ( struct ast_dial *  dial,
struct ast_dial_channel *  channel,
struct ast_frame *  fr,
struct ast_channel *  chan 
) [static]

Helper function that handles control frames WITH owner.

Definition at line 379 of file dial.c.

References ast_channel_connected_line_macro(), ast_channel_redirecting_macro(), AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_CONNECTED_LINE, AST_CONTROL_FLASH, AST_CONTROL_HOLD, AST_CONTROL_INCOMPLETE, AST_CONTROL_OFFHOOK, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_REDIRECTING, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, AST_DIAL_OPTION_MUSIC, AST_DIAL_RESULT_ANSWERED, AST_DIAL_RESULT_PROCEEDING, AST_DIAL_RESULT_PROGRESS, AST_DIAL_RESULT_RINGING, AST_FRAME_CONTROL, ast_hangup(), ast_indicate(), ast_indicate_data(), AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, ast_verb, ast_verbose(), ast_dial::channels, ast_frame::data, ast_frame::datalen, ast_channel::exten, ast_frame::frametype, ast_frame_subclass::integer, ast_dial_channel::list, ast_channel::name, option_verbose, ast_dial::options, ast_dial_channel::owner, ast_frame::ptr, set_state(), ast_frame::subclass, and VERBOSE_PREFIX_3.

Referenced by monitor_dial().

{
   if (fr->frametype == AST_FRAME_CONTROL) {
      switch (fr->subclass.integer) {
      case AST_CONTROL_ANSWER:
         ast_verb(3, "%s answered %s\n", channel->owner->name, chan->name);
         AST_LIST_LOCK(&dial->channels);
         AST_LIST_REMOVE(&dial->channels, channel, list);
         AST_LIST_INSERT_HEAD(&dial->channels, channel, list);
         AST_LIST_UNLOCK(&dial->channels);
         set_state(dial, AST_DIAL_RESULT_ANSWERED);
         break;
      case AST_CONTROL_BUSY:
         ast_verb(3, "%s is busy\n", channel->owner->name);
         ast_hangup(channel->owner);
         channel->owner = NULL;
         break;
      case AST_CONTROL_CONGESTION:
         ast_verb(3, "%s is circuit-busy\n", channel->owner->name);
         ast_hangup(channel->owner);
         channel->owner = NULL;
         break;
      case AST_CONTROL_INCOMPLETE:
         ast_verb(3, "%s dialed Incomplete extension %s\n", channel->owner->name, channel->owner->exten);
         ast_indicate(chan, AST_CONTROL_INCOMPLETE);
         break;
      case AST_CONTROL_RINGING:
         ast_verb(3, "%s is ringing\n", channel->owner->name);
         if (!dial->options[AST_DIAL_OPTION_MUSIC])
            ast_indicate(chan, AST_CONTROL_RINGING);
         set_state(dial, AST_DIAL_RESULT_RINGING);
         break;
      case AST_CONTROL_PROGRESS:
         ast_verb(3, "%s is making progress, passing it to %s\n", channel->owner->name, chan->name);
         ast_indicate(chan, AST_CONTROL_PROGRESS);
         set_state(dial, AST_DIAL_RESULT_PROGRESS);
         break;
      case AST_CONTROL_VIDUPDATE:
         ast_verb(3, "%s requested a video update, passing it to %s\n", channel->owner->name, chan->name);
         ast_indicate(chan, AST_CONTROL_VIDUPDATE);
         break;
      case AST_CONTROL_SRCUPDATE:
         if (option_verbose > 2)
            ast_verbose (VERBOSE_PREFIX_3 "%s requested a source update, passing it to %s\n", channel->owner->name, chan->name);
         ast_indicate(chan, AST_CONTROL_SRCUPDATE);
         break;
      case AST_CONTROL_CONNECTED_LINE:
         ast_verb(3, "%s connected line has changed, passing it to %s\n", channel->owner->name, chan->name);
         if (ast_channel_connected_line_macro(channel->owner, chan, fr, 1, 1)) {
            ast_indicate_data(chan, AST_CONTROL_CONNECTED_LINE, fr->data.ptr, fr->datalen);
         }
         break;
      case AST_CONTROL_REDIRECTING:
         ast_verb(3, "%s redirecting info has changed, passing it to %s\n", channel->owner->name, chan->name);
         if (ast_channel_redirecting_macro(channel->owner, chan, fr, 1, 1)) {
            ast_indicate_data(chan, AST_CONTROL_REDIRECTING, fr->data.ptr, fr->datalen);
         }
         break;
      case AST_CONTROL_PROCEEDING:
         ast_verb(3, "%s is proceeding, passing it to %s\n", channel->owner->name, chan->name);
         ast_indicate(chan, AST_CONTROL_PROCEEDING);
         set_state(dial, AST_DIAL_RESULT_PROCEEDING);
         break;
      case AST_CONTROL_HOLD:
         ast_verb(3, "Call on %s placed on hold\n", chan->name);
         ast_indicate(chan, AST_CONTROL_HOLD);
         break;
      case AST_CONTROL_UNHOLD:
         ast_verb(3, "Call on %s left from hold\n", chan->name);
         ast_indicate(chan, AST_CONTROL_UNHOLD);
         break;
      case AST_CONTROL_OFFHOOK:
      case AST_CONTROL_FLASH:
         break;
      case -1:
         /* Prod the channel */
         ast_indicate(chan, -1);
         break;
      default:
         break;
      }
   }

   return;
}
static void handle_frame_ownerless ( struct ast_dial *  dial,
struct ast_dial_channel *  channel,
struct ast_frame *  fr 
) [static]

Helper function that handles control frames WITHOUT owner.

Definition at line 466 of file dial.c.

References AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_DIAL_RESULT_ANSWERED, AST_DIAL_RESULT_PROCEEDING, AST_DIAL_RESULT_PROGRESS, AST_DIAL_RESULT_RINGING, AST_FRAME_CONTROL, ast_hangup(), AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_REMOVE, AST_LIST_UNLOCK, ast_verb, ast_dial::channels, ast_frame::frametype, ast_frame_subclass::integer, ast_dial_channel::list, ast_channel::name, ast_dial_channel::owner, set_state(), and ast_frame::subclass.

Referenced by monitor_dial().

{
   /* If we have no owner we can only update the state of the dial structure, so only look at control frames */
   if (fr->frametype != AST_FRAME_CONTROL)
      return;

   switch (fr->subclass.integer) {
   case AST_CONTROL_ANSWER:
      ast_verb(3, "%s answered\n", channel->owner->name);
      AST_LIST_LOCK(&dial->channels);
      AST_LIST_REMOVE(&dial->channels, channel, list);
      AST_LIST_INSERT_HEAD(&dial->channels, channel, list);
      AST_LIST_UNLOCK(&dial->channels);
      set_state(dial, AST_DIAL_RESULT_ANSWERED);
      break;
   case AST_CONTROL_BUSY:
      ast_verb(3, "%s is busy\n", channel->owner->name);
      ast_hangup(channel->owner);
      channel->owner = NULL;
      break;
   case AST_CONTROL_CONGESTION:
      ast_verb(3, "%s is circuit-busy\n", channel->owner->name);
      ast_hangup(channel->owner);
      channel->owner = NULL;
      break;
   case AST_CONTROL_RINGING:
      ast_verb(3, "%s is ringing\n", channel->owner->name);
      set_state(dial, AST_DIAL_RESULT_RINGING);
      break;
   case AST_CONTROL_PROGRESS:
      ast_verb(3, "%s is making progress\n", channel->owner->name);
      set_state(dial, AST_DIAL_RESULT_PROGRESS);
      break;
   case AST_CONTROL_PROCEEDING:
      ast_verb(3, "%s is proceeding\n", channel->owner->name);
      set_state(dial, AST_DIAL_RESULT_PROCEEDING);
      break;
   default:
      break;
   }

   return;
}
static int handle_timeout_trip ( struct ast_dial *  dial,
struct timeval  start 
) [static]

Helper function to handle when a timeout occurs on dialing attempt.

Definition at line 511 of file dial.c.

References AST_DIAL_RESULT_TIMEOUT, ast_hangup(), AST_LIST_TRAVERSE, ast_tvdiff_ms(), ast_tvnow(), ast_dial::channels, ast_dial_channel::list, ast_dial_channel::owner, set_state(), ast_dial::state, ast_dial::timeout, and ast_dial_channel::timeout.

Referenced by monitor_dial().

{
   struct ast_dial_channel *channel = NULL;
   int diff = ast_tvdiff_ms(ast_tvnow(), start), lowest_timeout = -1, new_timeout = -1;

   /* If the global dial timeout tripped switch the state to timeout so our channel loop will drop every channel */
   if (diff >= dial->timeout) {
      set_state(dial, AST_DIAL_RESULT_TIMEOUT);
      new_timeout = 0;
   }

   /* Go through dropping out channels that have met their timeout */
   AST_LIST_TRAVERSE(&dial->channels, channel, list) {
      if (dial->state == AST_DIAL_RESULT_TIMEOUT || diff >= channel->timeout) {
         ast_hangup(channel->owner);
         channel->owner = NULL;
      } else if ((lowest_timeout == -1) || (lowest_timeout > channel->timeout)) {
         lowest_timeout = channel->timeout;
      }
   }

   /* Calculate the new timeout using the lowest timeout found */
   if (lowest_timeout >= 0)
      new_timeout = lowest_timeout - diff;

   return new_timeout;
}
static enum ast_dial_result monitor_dial ( struct ast_dial *  dial,
struct ast_channel *  chan 
) [static]

Helper function that basically keeps tabs on dialing attempts.

Definition at line 540 of file dial.c.

References ast_dial::actual_timeout, answer_exec_run(), answer_exec_struct::app, answer_exec_struct::args, AST_CONTROL_RINGING, AST_DIAL_OPTION_ANSWER_EXEC, AST_DIAL_OPTION_MUSIC, AST_DIAL_OPTION_RINGING, AST_DIAL_RESULT_ANSWERED, AST_DIAL_RESULT_HANGUP, AST_DIAL_RESULT_RINGING, AST_DIAL_RESULT_TIMEOUT, AST_DIAL_RESULT_TRYING, AST_DIAL_RESULT_UNANSWERED, ast_frfree, ast_hangup(), ast_indicate(), AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, AST_MAX_WATCHERS, ast_moh_start(), ast_moh_stop(), ast_poll_channel_del(), AST_PTHREADT_STOP, ast_read(), ast_strdupa, ast_string_field_set, ast_strlen_zero(), ast_tvnow(), ast_waitfor_n(), ast_channel::call_forward, ast_dial::channels, find_relative_dial_channel(), FIND_RELATIVE_OPTION, handle_call_forward(), handle_frame(), handle_frame_ownerless(), handle_timeout_trip(), IS_CALLER, ast_dial_channel::is_running_app, musicclass, ast_channel::musicclass, ast_dial::options, ast_dial_channel::owner, set_state(), ast_dial::state, and ast_dial::thread.

Referenced by ast_dial_run(), and async_dial().

{
   int timeout = -1;
   struct ast_channel *cs[AST_MAX_WATCHERS], *who = NULL;
   struct ast_dial_channel *channel = NULL;
   struct answer_exec_struct *answer_exec = NULL;
   struct timeval start;

   set_state(dial, AST_DIAL_RESULT_TRYING);

   /* If the "always indicate ringing" option is set, change state to ringing and indicate to the owner if present */
   if (dial->options[AST_DIAL_OPTION_RINGING]) {
      set_state(dial, AST_DIAL_RESULT_RINGING);
      if (chan)
         ast_indicate(chan, AST_CONTROL_RINGING);
   } else if (chan && dial->options[AST_DIAL_OPTION_MUSIC] && 
      !ast_strlen_zero(dial->options[AST_DIAL_OPTION_MUSIC])) {
      char *original_moh = ast_strdupa(chan->musicclass);
      ast_indicate(chan, -1);
      ast_string_field_set(chan, musicclass, dial->options[AST_DIAL_OPTION_MUSIC]);
      ast_moh_start(chan, dial->options[AST_DIAL_OPTION_MUSIC], NULL);
      ast_string_field_set(chan, musicclass, original_moh);
   }

   /* Record start time for timeout purposes */
   start = ast_tvnow();

   /* We actually figured out the maximum timeout we can do as they were added, so we can directly access the info */
   timeout = dial->actual_timeout;

   /* Go into an infinite loop while we are trying */
   while ((dial->state != AST_DIAL_RESULT_UNANSWERED) && (dial->state != AST_DIAL_RESULT_ANSWERED) && (dial->state != AST_DIAL_RESULT_HANGUP) && (dial->state != AST_DIAL_RESULT_TIMEOUT)) {
      int pos = 0, count = 0;
      struct ast_frame *fr = NULL;

      /* Set up channel structure array */
      pos = count = 0;
      if (chan)
         cs[pos++] = chan;

      /* Add channels we are attempting to dial */
      AST_LIST_LOCK(&dial->channels);
      AST_LIST_TRAVERSE(&dial->channels, channel, list) {
         if (channel->owner) {
            cs[pos++] = channel->owner;
            count++;
         }
      }
      AST_LIST_UNLOCK(&dial->channels);

      /* If we have no outbound channels in progress, switch state to unanswered and stop */
      if (!count) {
         set_state(dial, AST_DIAL_RESULT_UNANSWERED);
         break;
      }

      /* Just to be safe... */
      if (dial->thread == AST_PTHREADT_STOP)
         break;

      /* Wait for frames from channels */
      who = ast_waitfor_n(cs, pos, &timeout);

      /* Check to see if our thread is being cancelled */
      if (dial->thread == AST_PTHREADT_STOP)
         break;

      /* If the timeout no longer exists OR if we got no channel it basically means the timeout was tripped, so handle it */
      if (!timeout || !who) {
         timeout = handle_timeout_trip(dial, start);
         continue;
      }

      /* Find relative dial channel */
      if (!chan || !IS_CALLER(chan, who))
         channel = find_relative_dial_channel(dial, who);

      /* See if this channel has been forwarded elsewhere */
      if (!ast_strlen_zero(who->call_forward)) {
         handle_call_forward(dial, channel, chan);
         continue;
      }

      /* Attempt to read in a frame */
      if (!(fr = ast_read(who))) {
         /* If this is the caller then we switch state to hangup and stop */
         if (chan && IS_CALLER(chan, who)) {
            set_state(dial, AST_DIAL_RESULT_HANGUP);
            break;
         }
         if (chan)
            ast_poll_channel_del(chan, channel->owner);
         ast_hangup(who);
         channel->owner = NULL;
         continue;
      }

      /* Process the frame */
      if (chan)
         handle_frame(dial, channel, fr, chan);
      else
         handle_frame_ownerless(dial, channel, fr);

      /* Free the received frame and start all over */
      ast_frfree(fr);
   }

   /* Do post-processing from loop */
   if (dial->state == AST_DIAL_RESULT_ANSWERED) {
      /* Hangup everything except that which answered */
      AST_LIST_LOCK(&dial->channels);
      AST_LIST_TRAVERSE(&dial->channels, channel, list) {
         if (!channel->owner || channel->owner == who)
            continue;
         if (chan)
            ast_poll_channel_del(chan, channel->owner);
         ast_hangup(channel->owner);
         channel->owner = NULL;
      }
      AST_LIST_UNLOCK(&dial->channels);
      /* If ANSWER_EXEC is enabled as an option, execute application on answered channel */
      if ((channel = find_relative_dial_channel(dial, who)) && (answer_exec = FIND_RELATIVE_OPTION(dial, channel, AST_DIAL_OPTION_ANSWER_EXEC))) {
         channel->is_running_app = 1;
         answer_exec_run(dial, channel, answer_exec->app, answer_exec->args);
         channel->is_running_app = 0;
      }

      if (chan && dial->options[AST_DIAL_OPTION_MUSIC] && 
         !ast_strlen_zero(dial->options[AST_DIAL_OPTION_MUSIC])) {
         ast_moh_stop(chan);
      }
   } else if (dial->state == AST_DIAL_RESULT_HANGUP) {
      /* Hangup everything */
      AST_LIST_LOCK(&dial->channels);
      AST_LIST_TRAVERSE(&dial->channels, channel, list) {
         if (!channel->owner)
            continue;
         if (chan)
            ast_poll_channel_del(chan, channel->owner);
         ast_hangup(channel->owner);
         channel->owner = NULL;
      }
      AST_LIST_UNLOCK(&dial->channels);
   }

   return dial->state;
}
static int music_disable ( void *  data) [static]

Definition at line 130 of file dial.c.

References ast_free.

{
   if (!data)
      return -1;

   ast_free(data);

   return 0;
}
static void* music_enable ( void *  data) [static]

Definition at line 125 of file dial.c.

References ast_strdup.

{
   return ast_strdup(data);
}
static void set_state ( struct ast_dial *  dial,
enum ast_dial_result  state 
) [static]

Definition at line 370 of file dial.c.

References ast_dial::state, and ast_dial::state_callback.

Referenced by handle_frame(), handle_frame_ownerless(), handle_timeout_trip(), and monitor_dial().

{
   dial->state = state;

   if (dial->state_callback)
      dial->state_callback(dial);
}

Variable Documentation

struct ast_option_types option_types[] [static]

Referenced by ast_dial_destroy(), ast_dial_option_disable(), ast_dial_option_enable(), ast_dial_option_global_disable(), and ast_dial_option_global_enable().