chan_console.c File Reference

Cross-platform console channel driver. More...

#include "asterisk.h"
#include <sys/signal.h>
#include <portaudio.h>
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/causes.h"
#include "asterisk/cli.h"
#include "asterisk/musiconhold.h"
#include "asterisk/callerid.h"
#include "asterisk/astobj2.h"

Include dependency graph for chan_console.c:

Go to the source code of this file.

Data Structures
struct	console_pvt
	Console pvt structure. More...
Defines
#define	console_pvt_lock(pvt)   ao2_lock(pvt)
	lock a console_pvt struct
#define	console_pvt_unlock(pvt)   ao2_unlock(pvt)
	unlock a console_pvt struct
#define	INPUT_CHANNELS   1
	Mono Input.
#define	MAX(a, b)   ((a) > (b) ? (a) : (b))
#define	MIN(a, b)   ((a) < (b) ? (a) : (b))
#define	NUM_PVT_BUCKETS   7
#define	NUM_SAMPLES   320
	The number of samples to configure the portaudio stream for.
#define	OUTPUT_CHANNELS   1
	Mono Output.
#define	SAMPLE_RATE   16000
	The sample rate to request from PortAudio.
#define	SUPPORTED_FORMATS   ( AST_FORMAT_SLINEAR16 )
	Formats natively supported by this module.
#define	TEXT_SIZE   256
	Maximum text message length.
#define	V_BEGIN   " --- <(\"<) --- "
	Dance, Kirby, Dance!
#define	V_END   " --- (>\")> ---\n"
Functions
static void	__reg_module (void)
static void	__unreg_module (void)
static char *	ast_ext_ctx (struct console_pvt *pvt, const char *src, char **ext, char **ctx)
static void	build_device (struct ast_config *cfg, const char *name)
static char *	cli_console_active (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_answer (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
	answer command from the console
static char *	cli_console_autoanswer (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_dial (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_flash (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_hangup (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_mute (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_console_sendtext (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
	Console send text CLI command.
static char *	cli_list_available (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static char *	cli_list_devices (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static struct ast_channel *	console_new (struct console_pvt *pvt, const char *ext, const char *ctx, int state)
static void	destroy_pvts (void)
static struct console_pvt *	find_pvt (const char *name)
static void	fini_active_lock (void)
static struct console_pvt *	get_active_pvt (void)
static void	init_active_lock (void)
static int	init_pvt (struct console_pvt *pvt, const char *name)
static int	load_config (int reload)
	Load the configuration.
static int	load_module (void)
static int	open_stream (struct console_pvt *pvt)
static int	pvt_cmp_cb (void *obj, void *arg, int flags)
static void	pvt_destructor (void *obj)
static int	pvt_hash_cb (const void *obj, const int flags)
static int	pvt_mark_destroy_cb (void *obj, void *arg, int flags)
static struct console_pvt *	ref_pvt (struct console_pvt *pvt)
static int	reload (void)
static void	set_active (struct console_pvt *pvt, const char *value)
static void	set_pvt_defaults (struct console_pvt *pvt)
	Set default values for a pvt struct.
static int	start_stream (struct console_pvt *pvt)
static int	stop_stream (struct console_pvt *pvt)
static void	stop_streams (void)
static void	store_callerid (struct console_pvt *pvt, const char *value)
static void	store_config_core (struct console_pvt *pvt, const char *var, const char *value)
	Store a configuration parameter in a pvt struct.
static void *	stream_monitor (void *data)
	Stream monitor thread.
static int	unload_module (void)
static struct console_pvt *	unref_pvt (struct console_pvt *pvt)
static int	console_answer (struct ast_channel *c)
static int	console_call (struct ast_channel *c, char *dest, int timeout)
static int	console_digit_begin (struct ast_channel *c, char digit)
static int	console_digit_end (struct ast_channel *c, char digit, unsigned int duration)
static int	console_fixup (struct ast_channel *oldchan, struct ast_channel *newchan)
static int	console_hangup (struct ast_channel *c)
static int	console_indicate (struct ast_channel *chan, int cond, const void *data, size_t datalen)
static struct ast_frame *	console_read (struct ast_channel *chan)
static struct ast_channel *	console_request (const char *type, int format, void *data, int *cause)
static int	console_text (struct ast_channel *c, const char *text)
static int	console_write (struct ast_channel *chan, struct ast_frame *f)
Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Console Channel Driver" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .reload = reload, }
static ast_rwlock_t	active_lock
static struct console_pvt *	active_pvt
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_cli_entry	cli_console []
static const char	config_file [] = "console.conf"
static struct ast_channel_tech	console_tech
static struct ast_jb_conf	default_jbconf
	Global jitterbuffer configuration.
static struct ast_jb_conf	global_jbconf
static struct console_pvt	globals
	Console pvt structure.
static ast_mutex_t	globals_lock = ((ast_mutex_t) PTHREAD_MUTEX_INITIALIZER )
static struct ao2_container *	pvts

---

Detailed Description

Cross-platform console channel driver.

Author:

Russell Bryant <russell@digium.com>

Note:

Some of the code in this file came from chan_oss and chan_alsa. chan_oss, Mark Spencer <markster@digium.com> chan_oss, Luigi Rizzo chan_alsa, Matthew Fredrickson <creslin@digium.com>

ExtRef:

Portaudio http://www.portaudio.com/

To install portaudio v19 from svn, check it out using the following command:

• svn co https://www.portaudio.com/repos/portaudio/branches/v19-devel

Note:

Since this works with any audio system that libportaudio supports, including ALSA and OSS, this may someday deprecate chan_alsa and chan_oss. However, before that can be done, it needs to *at least* have all of the features that these other channel drivers have. The features implemented in at least one of the other console channel drivers that are not yet implemented here are:

• Set Auto-answer from the dialplan
• transfer CLI command
• boost CLI command and .conf option
• console_video support

Definition in file chan_console.c.

---

Define Documentation

#define console_pvt_lock

(

pvt

)

ao2_lock(pvt)

lock a console_pvt struct

Definition at line 228 of file chan_console.c.

Referenced by build_device(), cli_console_active(), cli_console_dial(), cli_list_devices(), console_call(), console_request(), start_stream(), and stop_stream().

#define console_pvt_unlock

(

pvt

)

ao2_unlock(pvt)

unlock a console_pvt struct

Definition at line 231 of file chan_console.c.

Referenced by build_device(), cli_console_active(), cli_console_dial(), cli_list_devices(), console_call(), console_request(), start_stream(), and stop_stream().

#define INPUT_CHANNELS   1

Mono Input.

Definition at line 92 of file chan_console.c.

Referenced by open_stream().

#define MAX	(	a,
		b		)	((a) > (b) ? (a) : (b))

Definition at line 108 of file chan_console.c.

Referenced by __ast_answer(), and handle_response_register().

#define MIN	(	a,
		b		)	((a) < (b) ? (a) : (b))

Definition at line 105 of file chan_console.c.

#define NUM_PVT_BUCKETS   7

Definition at line 171 of file chan_console.c.

Referenced by load_module().

#define NUM_SAMPLES   320

The number of samples to configure the portaudio stream for.

320 samples (20 ms) is the most common frame size in Asterisk. So, the code in this module reads 320 sample frames from the portaudio stream and queues them up on the Asterisk channel. Frames of any size can be written to a portaudio stream, but the portaudio documentation does say that for high performance applications, the data should be written to Pa_WriteStream in the same size as what is used to initialize the stream.

Definition at line 89 of file chan_console.c.

Referenced by open_stream(), and stream_monitor().

#define OUTPUT_CHANNELS   1

Mono Output.

Definition at line 95 of file chan_console.c.

Referenced by open_stream().

#define SAMPLE_RATE   16000

The sample rate to request from PortAudio.

Todo:

Make this optional. If this is only going to talk to 8 kHz endpoints, then it makes sense to use 8 kHz natively.

Definition at line 77 of file chan_console.c.

#define SUPPORTED_FORMATS   ( AST_FORMAT_SLINEAR16 )

Formats natively supported by this module.

Definition at line 208 of file chan_console.c.

Referenced by console_request().

#define TEXT_SIZE   256

Maximum text message length.

Note:

This should be changed if there is a common definition somewhere that defines the maximum length of a text message.

Definition at line 102 of file chan_console.c.

Referenced by cli_console_sendtext(), and console_sendtext().

#define V_BEGIN   " --- <(\"<) --- "

Dance, Kirby, Dance!

Definition at line 112 of file chan_console.c.

Referenced by cli_console_mute(), console_answer(), console_call(), console_digit_begin(), console_digit_end(), console_hangup(), console_indicate(), and console_text().

#define V_END   " --- (>\")> ---\n"

Definition at line 113 of file chan_console.c.

Referenced by cli_console_mute(), console_answer(), console_call(), console_digit_begin(), console_digit_end(), console_hangup(), console_indicate(), and console_text().

---

Function Documentation

static void __reg_module

(

void

)

[static]

Definition at line 1520 of file chan_console.c.

static void __unreg_module

(

void

)

[static]

Definition at line 1520 of file chan_console.c.

static char* ast_ext_ctx	(	struct console_pvt *	pvt,
		const char *	src,
		char **	ext,
		char **	ctx
	)			[static]

split a string in extension-context, returns pointers to malloc'ed strings. If we do not have 'overridecontext' then the last @ is considered as a context separator, and the context is overridden. This is usually not very necessary as you can play with the dialplan, and it is nice not to need it because you have '@' in SIP addresses. Return value is the buffer address.

Note:

came from chan_oss

Definition at line 653 of file chan_console.c.

References ast_strdup, and console_pvt::overridecontext.

Referenced by cli_console_dial(), console_dial(), and console_transfer().

{
   if (ext == NULL || ctx == NULL)
      return NULL;         /* error */

   *ext = *ctx = NULL;

   if (src && *src != '\0')
      *ext = ast_strdup(src);

   if (*ext == NULL)
      return NULL;

   if (!pvt->overridecontext) {
      /* parse from the right */
      *ctx = strrchr(*ext, '@');
      if (*ctx)
         *(*ctx)++ = '\0';
   }

   return *ext;
}

static void build_device	(	struct ast_config *	cfg,
		const char *	name
	)			[static]

Definition at line 1325 of file chan_console.c.

References ao2_alloc(), ao2_link(), ast_variable_browse(), console_pvt_lock, console_pvt_unlock, console_pvt::destroy, find_pvt(), init_pvt(), ast_variable::name, ast_variable::next, pvt_destructor(), set_pvt_defaults(), store_config_core(), unref_pvt(), and ast_variable::value.

Referenced by load_config(), and reload_config().

{
   struct ast_variable *v;
   struct console_pvt *pvt;
   int new = 0;

   if ((pvt = find_pvt(name))) {
      console_pvt_lock(pvt);
      set_pvt_defaults(pvt);
      pvt->destroy = 0;
   } else {
      if (!(pvt = ao2_alloc(sizeof(*pvt), pvt_destructor)))
         return;
      init_pvt(pvt, name);
      set_pvt_defaults(pvt);
      new = 1;
   }

   for (v = ast_variable_browse(cfg, name); v; v = v->next)
      store_config_core(pvt, v->name, v->value);

   if (new)
      ao2_link(pvts, pvt);
   else
      console_pvt_unlock(pvt);
   
   unref_pvt(pvt);
}

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

Definition at line 1149 of file chan_console.c.

References ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next(), ast_cli_args::argc, ast_cli_entry::args, ast_cli_args::argv, ast_cli(), ast_strdup, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, console_pvt_lock, console_pvt_unlock, ast_cli_args::fd, find_pvt(), get_active_pvt(), ast_cli_args::n, console_pvt::name, ast_cli_args::pos, set_active(), unref_pvt(), ast_cli_entry::usage, and ast_cli_args::word.

{
   struct console_pvt *pvt;

   switch (cmd) {
   case CLI_INIT:
      e->command = "console active";
      e->usage =
         "Usage: console active [device]\n"
         "       If no device is specified.  The active console device will be shown.\n"
         "Otherwise, the specified device will become the console device active for\n"
         "the Asterisk CLI.\n";
      return NULL;
   case CLI_GENERATE:
      if (a->pos == e->args) {
         struct ao2_iterator i;
         int x = 0;
         char *res = NULL;
         i = ao2_iterator_init(pvts, 0);
         while ((pvt = ao2_iterator_next(&i))) {
            if (++x > a->n && !strncasecmp(pvt->name, a->word, strlen(a->word)))
               res = ast_strdup(pvt->name);
            unref_pvt(pvt);
            if (res) {
               ao2_iterator_destroy(&i);
               return res;
            }
         }
         ao2_iterator_destroy(&i);
      }
      return NULL;
   }

   if (a->argc < e->args)
      return CLI_SHOWUSAGE;

   if (a->argc == e->args) {
      pvt = get_active_pvt();

      if (!pvt)
         ast_cli(a->fd, "No device is currently set as the active console device.\n");
      else {
         console_pvt_lock(pvt);
         ast_cli(a->fd, "The active console device is '%s'.\n", pvt->name);
         console_pvt_unlock(pvt);
         pvt = unref_pvt(pvt);
      }

      return CLI_SUCCESS;
   }

   if (!(pvt = find_pvt(a->argv[e->args]))) {
      ast_cli(a->fd, "Could not find a device called '%s'.\n", a->argv[e->args]);
      return CLI_FAILURE;
   }

   set_active(pvt, "yes");

   console_pvt_lock(pvt);
   ast_cli(a->fd, "The active console device has been set to '%s'\n", pvt->name);
   console_pvt_unlock(pvt);

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

answer command from the console

Definition at line 1029 of file chan_console.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli(), AST_CONTROL_ANSWER, AST_FRAME_CONTROL, ast_indicate(), ast_queue_frame(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, get_active_pvt(), console_pvt::hookstate, console_pvt::owner, unref_pvt(), and ast_cli_entry::usage.

{
   struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_ANSWER };
   struct console_pvt *pvt = get_active_pvt();

   switch (cmd) {
   case CLI_INIT:
      e->command = "console answer";
      e->usage =
         "Usage: console answer\n"
         "       Answers an incoming call on the console channel.\n";
      return NULL;

   case CLI_GENERATE:
      return NULL;   /* no completion */
   }

   if (!pvt) {
      ast_cli(a->fd, "No console device is set as active\n");
      return CLI_FAILURE;
   }

   if (a->argc != e->args) {
      unref_pvt(pvt);
      return CLI_SHOWUSAGE;
   }

   if (!pvt->owner) {
      ast_cli(a->fd, "No one is calling us\n");
      unref_pvt(pvt);
      return CLI_FAILURE;
   }

   pvt->hookstate = 1;

   ast_indicate(pvt->owner, -1);

   ast_queue_frame(pvt->owner, &f);

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

Definition at line 687 of file chan_console.c.

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

{
   struct console_pvt *pvt = get_active_pvt();
   char *res = CLI_SUCCESS;

   switch (cmd) {
   case CLI_INIT:
      e->command = "console set autoanswer [on|off]";
      e->usage =
         "Usage: console set autoanswer [on|off]\n"
         "       Enables or disables autoanswer feature.  If used without\n"
         "       argument, displays the current on/off status of autoanswer.\n"
         "       The default value of autoanswer is in 'oss.conf'.\n";
      return NULL;

   case CLI_GENERATE:
      return NULL;
   }

   if (!pvt) {
      ast_cli(a->fd, "No console device is set as active.\n");
      return CLI_FAILURE;
   }

   if (a->argc == e->args - 1) {
      ast_cli(a->fd, "Auto answer is %s.\n", pvt->autoanswer ? "on" : "off");
      unref_pvt(pvt);
      return CLI_SUCCESS;
   }

   if (a->argc != e->args) {
      unref_pvt(pvt);
      return CLI_SHOWUSAGE;
   }

   if (!strcasecmp(a->argv[e->args-1], "on"))
      pvt->autoanswer = 1;
   else if (!strcasecmp(a->argv[e->args - 1], "off"))
      pvt->autoanswer = 0;
   else
      res = CLI_SHOWUSAGE;

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

Definition at line 772 of file chan_console.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli_args::argv, ast_cli(), ast_debug, ast_exists_extension(), ast_ext_ctx(), AST_FRAME_DTMF, ast_queue_frame(), AST_STATE_RINGING, ast_strlen_zero(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, console_new(), console_pvt_lock, console_pvt_unlock, console_pvt::context, ext, console_pvt::exten, ast_cli_args::fd, free, get_active_pvt(), console_pvt::hookstate, console_pvt::owner, s, ast_frame::subclass, unref_pvt(), and ast_cli_entry::usage.

{
   char *s = NULL;
   const char *mye = NULL, *myc = NULL; 
   struct console_pvt *pvt = get_active_pvt();

   if (cmd == CLI_INIT) {
      e->command = "console dial";
      e->usage =
         "Usage: console dial [extension[@context]]\n"
         "       Dials a given extension (and context if specified)\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (!pvt) {
      ast_cli(a->fd, "No console device is currently set as active\n");
      return CLI_FAILURE;
   }
   
   if (a->argc > e->args + 1)
      return CLI_SHOWUSAGE;

   if (pvt->owner) { /* already in a call */
      int i;
      struct ast_frame f = { AST_FRAME_DTMF, 0 };

      if (a->argc == e->args) {  /* argument is mandatory here */
         ast_cli(a->fd, "Already in a call. You can only dial digits until you hangup.\n");
         unref_pvt(pvt);
         return CLI_FAILURE;
      }
      s = a->argv[e->args];
      /* send the string one char at a time */
      for (i = 0; i < strlen(s); i++) {
         f.subclass = s[i];
         ast_queue_frame(pvt->owner, &f);
      }
      unref_pvt(pvt);
      return CLI_SUCCESS;
   }

   /* if we have an argument split it into extension and context */
   if (a->argc == e->args + 1) {
      char *ext = NULL, *con = NULL;
      s = ast_ext_ctx(pvt, a->argv[e->args], &ext, &con);
      ast_debug(1, "provided '%s', exten '%s' context '%s'\n", 
         a->argv[e->args], mye, myc);
      mye = ext;
      myc = con;
   }

   /* supply default values if needed */
   if (ast_strlen_zero(mye))
      mye = pvt->exten;
   if (ast_strlen_zero(myc))
      myc = pvt->context;

   if (ast_exists_extension(NULL, myc, mye, 1, NULL)) {
      console_pvt_lock(pvt);
      pvt->hookstate = 1;
      console_new(pvt, mye, myc, AST_STATE_RINGING);
      console_pvt_unlock(pvt);
   } else
      ast_cli(a->fd, "No such extension '%s' in context '%s'\n", mye, myc);

   if (s)
      free(s);

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

Definition at line 735 of file chan_console.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli(), AST_CONTROL_FLASH, AST_FRAME_CONTROL, ast_queue_frame(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, get_active_pvt(), console_pvt::hookstate, console_pvt::owner, unref_pvt(), and ast_cli_entry::usage.

{
   struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_FLASH };
   struct console_pvt *pvt = get_active_pvt();

   if (cmd == CLI_INIT) {
      e->command = "console flash";
      e->usage =
         "Usage: console flash\n"
         "       Flashes the call currently placed on the console.\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (!pvt) {
      ast_cli(a->fd, "No console device is set as active\n");
      return CLI_FAILURE;
   }

   if (a->argc != e->args)
      return CLI_SHOWUSAGE;

   if (!pvt->owner) {
      ast_cli(a->fd, "No call to flash\n");
      unref_pvt(pvt);
      return CLI_FAILURE;
   }

   pvt->hookstate = 0;

   ast_queue_frame(pvt->owner, &f);

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

Definition at line 846 of file chan_console.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli(), ast_queue_hangup(), CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, get_active_pvt(), console_pvt::hookstate, console_pvt::owner, unref_pvt(), and ast_cli_entry::usage.

{
   struct console_pvt *pvt = get_active_pvt();

   if (cmd == CLI_INIT) {
      e->command = "console hangup";
      e->usage =
         "Usage: console hangup\n"
         "       Hangs up any call currently placed on the console.\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (!pvt) {
      ast_cli(a->fd, "No console device is set as active\n");
      return CLI_FAILURE;
   }
   
   if (a->argc != e->args)
      return CLI_SHOWUSAGE;

   if (!pvt->owner && !pvt->hookstate) {
      ast_cli(a->fd, "No call to hang up\n");
      unref_pvt(pvt);
      return CLI_FAILURE;
   }

   pvt->hookstate = 0;
   if (pvt->owner)
      ast_queue_hangup(pvt->owner);

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

Definition at line 882 of file chan_console.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli_args::argv, ast_cli(), ast_verb, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, get_active_pvt(), console_pvt::muted, s, unref_pvt(), ast_cli_entry::usage, V_BEGIN, and V_END.

{
   char *s;
   struct console_pvt *pvt = get_active_pvt();
   char *res = CLI_SUCCESS;

   if (cmd == CLI_INIT) {
      e->command = "console {mute|unmute}";
      e->usage =
         "Usage: console {mute|unmute}\n"
         "       Mute/unmute the microphone.\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (!pvt) {
      ast_cli(a->fd, "No console device is set as active\n");
      return CLI_FAILURE;
   }

   if (a->argc != e->args)
      return CLI_SHOWUSAGE;

   s = a->argv[e->args-1];
   if (!strcasecmp(s, "mute"))
      pvt->muted = 1;
   else if (!strcasecmp(s, "unmute"))
      pvt->muted = 0;
   else
      res = CLI_SHOWUSAGE;

   ast_verb(1, V_BEGIN "The Console is now %s" V_END, 
      pvt->muted ? "Muted" : "Unmuted");

   unref_pvt(pvt);

   return res;
}

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

Console send text CLI command.

Note:

concatenate all arguments into a single string. argv is NULL-terminated so we can use it right away

Definition at line 1079 of file chan_console.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli_args::argv, ast_cli(), AST_FRAME_TEXT, ast_join(), ast_queue_frame(), ast_strlen_zero(), buf, CLI_FAILURE, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_frame::datalen, ast_cli_args::fd, ast_frame::frametype, get_active_pvt(), len(), console_pvt::owner, TEXT_SIZE, unref_pvt(), and ast_cli_entry::usage.

{
   char buf[TEXT_SIZE];
   struct console_pvt *pvt = get_active_pvt();
   struct ast_frame f = {
      .frametype = AST_FRAME_TEXT,
      .data = buf,
      .src = "console_send_text",
   };
   int len;

   if (cmd == CLI_INIT) {
      e->command = "console send text";
      e->usage =
         "Usage: console send text <message>\n"
         "       Sends a text message for display on the remote terminal.\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (!pvt) {
      ast_cli(a->fd, "No console device is set as active\n");
      return CLI_FAILURE;
   }

   if (a->argc < e->args + 1) {
      unref_pvt(pvt);
      return CLI_SHOWUSAGE;
   }

   if (!pvt->owner) {
      ast_cli(a->fd, "Not in a call\n");
      unref_pvt(pvt);
      return CLI_FAILURE;
   }

   ast_join(buf, sizeof(buf) - 1, a->argv + e->args);
   if (ast_strlen_zero(buf)) {
      unref_pvt(pvt);
      return CLI_SHOWUSAGE;
   }

   len = strlen(buf);
   buf[len] = '\n';
   f.datalen = len + 1;

   ast_queue_frame(pvt->owner, &f);

   unref_pvt(pvt);

   return CLI_SUCCESS;
}

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

Definition at line 921 of file chan_console.c.

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

{
   PaDeviceIndex index, num, def_input, def_output;

   if (cmd == CLI_INIT) {
      e->command = "console list available";
      e->usage =
         "Usage: console list available\n"
         "       List all available devices.\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (a->argc != e->args)
      return CLI_SHOWUSAGE;

   ast_cli(a->fd, "\n"
               "=============================================================\n"
               "=== Available Devices =======================================\n"
               "=============================================================\n"
               "===\n");

   num = Pa_GetDeviceCount();
   if (!num) {
      ast_cli(a->fd, "(None)\n");
      return CLI_SUCCESS;
   }

   def_input = Pa_GetDefaultInputDevice();
   def_output = Pa_GetDefaultOutputDevice();
   for (index = 0; index < num; index++) {
      const PaDeviceInfo *dev = Pa_GetDeviceInfo(index);
      if (!dev)
         continue;
      ast_cli(a->fd, "=== ---------------------------------------------------------\n"
                     "=== Device Name: %s\n", dev->name);
      if (dev->maxInputChannels)
         ast_cli(a->fd, "=== ---> %sInput Device\n", (index == def_input) ? "Default " : "");
      if (dev->maxOutputChannels)
         ast_cli(a->fd, "=== ---> %sOutput Device\n", (index == def_output) ? "Default " : "");
      ast_cli(a->fd, "=== ---------------------------------------------------------\n===\n");
   }

   ast_cli(a->fd, "=============================================================\n\n");

   return CLI_SUCCESS;
}

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

Definition at line 969 of file chan_console.c.

References ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next(), ast_cli_args::argc, ast_cli_entry::args, ast_cli(), console_pvt::autoanswer, console_pvt::cid_name, console_pvt::cid_num, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, console_pvt_lock, console_pvt_unlock, console_pvt::context, console_pvt::exten, ast_cli_args::fd, console_pvt::input_device, console_pvt::language, console_pvt::mohinterpret, console_pvt::muted, console_pvt::name, console_pvt::output_device, console_pvt::overridecontext, unref_pvt(), and ast_cli_entry::usage.

{
   struct ao2_iterator i;
   struct console_pvt *pvt;

   if (cmd == CLI_INIT) {
      e->command = "console list devices";
      e->usage =
         "Usage: console list devices\n"
         "       List all configured devices.\n";
      return NULL;
   } else if (cmd == CLI_GENERATE)
      return NULL;

   if (a->argc != e->args)
      return CLI_SHOWUSAGE;

   ast_cli(a->fd, "\n"
               "=============================================================\n"
               "=== Configured Devices ======================================\n"
               "=============================================================\n"
               "===\n");

   i = ao2_iterator_init(pvts, 0);
   while ((pvt = ao2_iterator_next(&i))) {
      console_pvt_lock(pvt);

      ast_cli(a->fd, "=== ---------------------------------------------------------\n"
                     "=== Device Name: %s\n"
                     "=== ---> Active:           %s\n"
                     "=== ---> Input Device:     %s\n"
                     "=== ---> Output Device:    %s\n"
                     "=== ---> Context:          %s\n"
                     "=== ---> Extension:        %s\n"
                     "=== ---> CallerID Num:     %s\n"
                     "=== ---> CallerID Name:    %s\n"
                     "=== ---> MOH Interpret:    %s\n"
                     "=== ---> Language:         %s\n"
                     "=== ---> Muted:            %s\n"
                     "=== ---> Auto-Answer:      %s\n"
                     "=== ---> Override Context: %s\n"
                     "=== ---------------------------------------------------------\n===\n",
         pvt->name, (pvt == active_pvt) ? "Yes" : "No",
         pvt->input_device, pvt->output_device, pvt->context,
         pvt->exten, pvt->cid_num, pvt->cid_name, pvt->mohinterpret,
         pvt->language, pvt->muted ? "Yes" : "No", pvt->autoanswer ? "Yes" : "No",
         pvt->overridecontext ? "Yes" : "No");

      console_pvt_unlock(pvt);
      unref_pvt(pvt);
   }
   ao2_iterator_destroy(&i);

   ast_cli(a->fd, "=============================================================\n\n");

   return CLI_SUCCESS;
}

static int console_answer

(

struct ast_channel *

c

)

[static]

Definition at line 521 of file chan_console.c.

References ast_setstate(), AST_STATE_UP, ast_verb, start_stream(), ast_channel::tech_pvt, V_BEGIN, and V_END.

{
   struct console_pvt *pvt = c->tech_pvt;

   ast_verb(1, V_BEGIN "Call from Console has been Answered" V_END);

   ast_setstate(c, AST_STATE_UP);

   return start_stream(pvt);
}

static int console_call	(	struct ast_channel *	c,
		char *	dest,
		int	timeout
	)			[static]

Definition at line 559 of file chan_console.c.

References AST_CONTROL_ANSWER, AST_CONTROL_RINGING, AST_FRAME_CONTROL, ast_indicate(), ast_queue_frame(), ast_verb, console_pvt::autoanswer, ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, console_pvt_lock, console_pvt_unlock, ast_frame::frametype, console_pvt::hookstate, start_stream(), ast_frame::subclass, ast_channel::tech_pvt, V_BEGIN, and V_END.

{
   struct ast_frame f = { 0, };
   struct console_pvt *pvt = c->tech_pvt;

   ast_verb(1, V_BEGIN "Call to device '%s' on console from '%s' <%s>" V_END,
      dest, c->cid.cid_name, c->cid.cid_num);

   console_pvt_lock(pvt);

   if (pvt->autoanswer) {
      pvt->hookstate = 1;
      console_pvt_unlock(pvt);
      ast_verb(1, V_BEGIN "Auto-answered" V_END);
      f.frametype = AST_FRAME_CONTROL;
      f.subclass = AST_CONTROL_ANSWER;
   } else {
      console_pvt_unlock(pvt);
      ast_verb(1, V_BEGIN "Type 'console answer' to answer, or use the 'autoanswer' option "
            "for future calls" V_END);
      f.frametype = AST_FRAME_CONTROL;
      f.subclass = AST_CONTROL_RINGING;
      ast_indicate(c, AST_CONTROL_RINGING);
   }

   ast_queue_frame(c, &f);

   return start_stream(pvt);
}

static int console_digit_begin	(	struct ast_channel *	c,
		char	digit
	)			[static]

Definition at line 484 of file chan_console.c.

References ast_verb, V_BEGIN, and V_END.

{
   ast_verb(1, V_BEGIN "Console Received Beginning of Digit %c" V_END, digit);

   return -1; /* non-zero to request inband audio */
}

static int console_digit_end	(	struct ast_channel *	c,
		char	digit,
		unsigned int	duration
	)			[static]

Definition at line 491 of file chan_console.c.

References ast_verb, V_BEGIN, and V_END.

{
   ast_verb(1, V_BEGIN "Console Received End of Digit %c (duration %u)" V_END, 
      digit, duration);

   return -1; /* non-zero to request inband audio */
}

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

Definition at line 633 of file chan_console.c.

References console_pvt::owner, and ast_channel::tech_pvt.

{
   struct console_pvt *pvt = newchan->tech_pvt;

   pvt->owner = newchan;

   return 0;
}

static int console_hangup

(

struct ast_channel *

c

)

[static]

Definition at line 506 of file chan_console.c.

References ast_verb, console_pvt::hookstate, console_pvt::owner, stop_stream(), ast_channel::tech_pvt, unref_pvt(), V_BEGIN, and V_END.

{
   struct console_pvt *pvt = c->tech_pvt;

   ast_verb(1, V_BEGIN "Hangup on Console" V_END);

   pvt->hookstate = 0;
   pvt->owner = NULL;
   stop_stream(pvt);

   c->tech_pvt = unref_pvt(pvt);

   return 0;
}

static int console_indicate	(	struct ast_channel *	chan,
		int	cond,
		const void *	data,
		size_t	datalen
	)			[static]

Definition at line 598 of file chan_console.c.

References AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HOLD, AST_CONTROL_PROCEEDING, AST_CONTROL_PROGRESS, AST_CONTROL_RINGING, AST_CONTROL_SRCUPDATE, AST_CONTROL_UNHOLD, AST_CONTROL_VIDUPDATE, ast_log(), ast_moh_start(), ast_moh_stop(), ast_verb, LOG_WARNING, console_pvt::mohinterpret, ast_channel::name, ast_channel::tech_pvt, V_BEGIN, and V_END.

{
   struct console_pvt *pvt = chan->tech_pvt;
   int res = 0;

   switch (cond) {
   case AST_CONTROL_BUSY:
   case AST_CONTROL_CONGESTION:
   case AST_CONTROL_RINGING:
   case -1:
      res = -1;  /* Ask for inband indications */
      break;
   case AST_CONTROL_PROGRESS:
   case AST_CONTROL_PROCEEDING:
   case AST_CONTROL_VIDUPDATE:
   case AST_CONTROL_SRCUPDATE:
      break;
   case AST_CONTROL_HOLD:
      ast_verb(1, V_BEGIN "Console Has Been Placed on Hold" V_END);
      ast_moh_start(chan, data, pvt->mohinterpret);
      break;
   case AST_CONTROL_UNHOLD:
      ast_verb(1, V_BEGIN "Console Has Been Retrieved from Hold" V_END);
      ast_moh_stop(chan);
      break;
   default:
      ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n", 
         cond, chan->name);
      /* The core will play inband indications for us if appropriate */
      res = -1;
   }

   return res;
}

static struct ast_channel* console_new	(	struct console_pvt *	pvt,
		const char *	ext,
		const char *	ctx,
		int	state
	)			[static, read]

Note:

Called with the pvt struct locked

Definition at line 414 of file chan_console.c.

References AST_CAUSE_SWITCH_CONGESTION, ast_channel_alloc, AST_FORMAT_SLINEAR16, ast_hangup(), ast_jb_configure(), ast_pbx_start(), AST_STATE_DOWN, ast_string_field_set, ast_strlen_zero(), chan, console_pvt::cid_name, console_pvt::cid_num, global_jbconf, ast_channel::hangupcause, language, console_pvt::language, console_pvt::name, ast_channel::nativeformats, console_pvt::owner, ast_channel::readformat, ref_pvt(), start_stream(), ast_channel::tech, ast_channel::tech_pvt, and ast_channel::writeformat.

Referenced by cli_console_dial(), and console_request().

{
   struct ast_channel *chan;

   if (!(chan = ast_channel_alloc(1, state, pvt->cid_num, pvt->cid_name, NULL, 
      ext, ctx, 0, "Console/%s", pvt->name))) {
      return NULL;
   }

   chan->tech = &console_tech;
   chan->nativeformats = AST_FORMAT_SLINEAR16;
   chan->readformat = AST_FORMAT_SLINEAR16;
   chan->writeformat = AST_FORMAT_SLINEAR16;
   chan->tech_pvt = ref_pvt(pvt);

   pvt->owner = chan;

   if (!ast_strlen_zero(pvt->language))
      ast_string_field_set(chan, language, pvt->language);

   ast_jb_configure(chan, &global_jbconf);

   if (state != AST_STATE_DOWN) {
      if (ast_pbx_start(chan)) {
         chan->hangupcause = AST_CAUSE_SWITCH_CONGESTION;
         ast_hangup(chan);
         chan = NULL;
      } else
         start_stream(pvt);
   }

   return chan;
}

static struct ast_frame * console_read

(

struct ast_channel *

chan

)

[static, read]

Definition at line 552 of file chan_console.c.

References ast_debug, and ast_null_frame.

{
   ast_debug(1, "I should not be called ...\n");

   return &ast_null_frame;
}

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

Channel Technology Callbacks

Definition at line 448 of file chan_console.c.

References AST_CAUSE_BUSY, ast_log(), AST_STATE_DOWN, chan, console_new(), console_pvt_lock, console_pvt_unlock, find_pvt(), LOG_ERROR, LOG_NOTICE, LOG_WARNING, console_pvt::owner, SUPPORTED_FORMATS, and unref_pvt().

{
   int oldformat = format;
   struct ast_channel *chan = NULL;
   struct console_pvt *pvt;

   if (!(pvt = find_pvt(data))) {
      ast_log(LOG_ERROR, "Console device '%s' not found\n", (char *) data);
      return NULL;
   }

   format &= SUPPORTED_FORMATS;
   if (!format) {
      ast_log(LOG_NOTICE, "Channel requested with unsupported format(s): '%d'\n", oldformat);
      goto return_unref;
   }

   if (pvt->owner) {
      ast_log(LOG_NOTICE, "Console channel already active!\n");
      *cause = AST_CAUSE_BUSY;
      goto return_unref;
   }

   console_pvt_lock(pvt);
   chan = console_new(pvt, NULL, NULL, AST_STATE_DOWN);
   console_pvt_unlock(pvt);

   if (!chan)
      ast_log(LOG_WARNING, "Unable to create new Console channel!\n");

return_unref:
   unref_pvt(pvt);

   return chan;
}

static int console_text	(	struct ast_channel *	c,
		const char *	text
	)			[static]

Definition at line 499 of file chan_console.c.

References ast_verb, V_BEGIN, and V_END.

{
   ast_verb(1, V_BEGIN "Console Received Text '%s'" V_END, text);

   return 0;
}

static int console_write	(	struct ast_channel *	chan,
		struct ast_frame *	f
	)			[static]

Definition at line 589 of file chan_console.c.

References ast_frame::data, ast_frame::samples, console_pvt::stream, and ast_channel::tech_pvt.

{
   struct console_pvt *pvt = chan->tech_pvt;

   Pa_WriteStream(pvt->stream, f->data, f->samples);

   return 0;
}

static void destroy_pvts

(

void

)

[static]

Definition at line 1361 of file chan_console.c.

References active_lock, ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next(), ao2_unlink(), ast_rwlock_unlock(), ast_rwlock_wrlock(), console_pvt::destroy, and unref_pvt().

Referenced by load_config().

{
   struct ao2_iterator i;
   struct console_pvt *pvt;

   i = ao2_iterator_init(pvts, 0);
   while ((pvt = ao2_iterator_next(&i))) {
      if (pvt->destroy) {
         ao2_unlink(pvts, pvt);
         ast_rwlock_wrlock(&active_lock);
         if (active_pvt == pvt)
            active_pvt = unref_pvt(pvt);
         ast_rwlock_unlock(&active_lock);
      }
      unref_pvt(pvt);
   }
   ao2_iterator_destroy(&i);
}

static struct console_pvt* find_pvt

(

const char *

name

)

[static, read]

Definition at line 246 of file chan_console.c.

References ao2_find(), console_pvt::name, and OBJ_POINTER.

Referenced by build_device(), cli_console_active(), and console_request().

{
   struct console_pvt tmp_pvt = {
      .name = name,
   };

   return ao2_find(pvts, &tmp_pvt, OBJ_POINTER);
}

static void fini_active_lock

(

void

)

[static]

Definition at line 174 of file chan_console.c.

{

static struct console_pvt* get_active_pvt

(

void

)

[static, read]

Definition at line 676 of file chan_console.c.

References active_lock, ast_rwlock_rdlock(), ast_rwlock_unlock(), and ref_pvt().

Referenced by cli_console_active(), cli_console_answer(), cli_console_autoanswer(), cli_console_dial(), cli_console_flash(), cli_console_hangup(), cli_console_mute(), and cli_console_sendtext().

{
   struct console_pvt *pvt;

   ast_rwlock_rdlock(&active_lock);
   pvt = ref_pvt(active_pvt); 
   ast_rwlock_unlock(&active_lock);

   return pvt;
}

static void init_active_lock

(

void

)

[static]

Definition at line 174 of file chan_console.c.

{

static int init_pvt	(	struct console_pvt *	pvt,
		const char *	name
	)			[static]

Definition at line 1313 of file chan_console.c.

References AST_PTHREADT_NULL, ast_string_field_init, ast_string_field_set, S_OR, and console_pvt::thread.

Referenced by build_device(), and load_module().

{
   pvt->thread = AST_PTHREADT_NULL;

   if (ast_string_field_init(pvt, 32))
      return -1;

   ast_string_field_set(pvt, name, S_OR(name, ""));

   return 0;
}

static int load_config

(

int

reload

)

[static]

Load the configuration.

Parameters:

reload

if this was called due to a reload

Return values:

	0	success
	-1	failure

Definition at line 1386 of file chan_console.c.

References ao2_callback(), ast_category_browse(), ast_config_destroy(), ast_config_load, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_variable_browse(), build_device(), context, destroy_pvts(), global_jbconf, globals, globals_lock, LOG_NOTICE, ast_variable::name, ast_variable::next, OBJ_NODATA, pvt_mark_destroy_cb(), set_pvt_defaults(), store_config_core(), and ast_variable::value.

{
   struct ast_config *cfg;
   struct ast_variable *v;
   struct ast_flags config_flags = { 0 };
   char *context = NULL;

   /* default values */
   memcpy(&global_jbconf, &default_jbconf, sizeof(global_jbconf));
   ast_mutex_lock(&globals_lock);
   set_pvt_defaults(&globals);
   ast_mutex_unlock(&globals_lock);

   if (!(cfg = ast_config_load(config_file, config_flags))) {
      ast_log(LOG_NOTICE, "Unable to open configuration file %s!\n", config_file);
      return -1;
   }
   
   ao2_callback(pvts, OBJ_NODATA, pvt_mark_destroy_cb, NULL);

   ast_mutex_lock(&globals_lock);
   for (v = ast_variable_browse(cfg, "general"); v; v = v->next)
      store_config_core(&globals, v->name, v->value);
   ast_mutex_unlock(&globals_lock);

   while ((context = ast_category_browse(cfg, context))) {
      if (strcasecmp(context, "general"))
         build_device(cfg, context);
   }

   ast_config_destroy(cfg);

   destroy_pvts();

   return 0;
}

static int load_module

(

void

)

[static]

Definition at line 1468 of file chan_console.c.

References ao2_container_alloc(), ao2_ref(), ARRAY_LEN, ast_channel_register(), ast_channel_unregister(), ast_cli_register_multiple(), ast_cli_unregister_multiple(), ast_log(), AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, globals, init_pvt(), load_config(), LOG_ERROR, LOG_WARNING, NUM_PVT_BUCKETS, pvt_cmp_cb(), pvt_destructor(), and pvt_hash_cb().

{
   PaError res;

   init_pvt(&globals, NULL);

   if (!(pvts = ao2_container_alloc(NUM_PVT_BUCKETS, pvt_hash_cb, pvt_cmp_cb)))
      goto return_error;

   if (load_config(0))
      goto return_error;

   res = Pa_Initialize();
   if (res != paNoError) {
      ast_log(LOG_WARNING, "Failed to initialize audio system - (%d) %s\n",
         res, Pa_GetErrorText(res));
      goto return_error_pa_init;
   }

   if (ast_channel_register(&console_tech)) {
      ast_log(LOG_ERROR, "Unable to register channel type 'Console'\n");
      goto return_error_chan_reg;
   }

   if (ast_cli_register_multiple(cli_console, ARRAY_LEN(cli_console)))
      goto return_error_cli_reg;

   return AST_MODULE_LOAD_SUCCESS;

return_error_cli_reg:
   ast_cli_unregister_multiple(cli_console, ARRAY_LEN(cli_console));
return_error_chan_reg:
   ast_channel_unregister(&console_tech);
return_error_pa_init:
   Pa_Terminate();
return_error:
   if (pvts)
      ao2_ref(pvts, -1);
   pvt_destructor(&globals);

   return AST_MODULE_LOAD_DECLINE;
}

static int open_stream

(

struct console_pvt *

pvt

)

[static]

Definition at line 291 of file chan_console.c.

References ast_log(), INPUT_CHANNELS, console_pvt::input_device, LOG_ERROR, console_pvt::name, NUM_SAMPLES, OUTPUT_CHANNELS, console_pvt::output_device, SAMPLE_RATE, and console_pvt::stream.

Referenced by start_stream().

{
   int res = paInternalError;

   if (!strcasecmp(pvt->input_device, "default") && 
      !strcasecmp(pvt->output_device, "default")) {
      res = Pa_OpenDefaultStream(&pvt->stream, INPUT_CHANNELS, OUTPUT_CHANNELS, 
         paInt16, SAMPLE_RATE, NUM_SAMPLES, NULL, NULL);
   } else {
      PaStreamParameters input_params = { 
         .channelCount = 1,
         .sampleFormat = paInt16,
         .suggestedLatency = (1.0 / 50.0), /* 20 ms */
         .device = paNoDevice,
      };
      PaStreamParameters output_params = { 
         .channelCount = 1, 
         .sampleFormat = paInt16,
         .suggestedLatency = (1.0 / 50.0), /* 20 ms */
         .device = paNoDevice,
      };
      PaDeviceIndex index, num_devices, def_input, def_output;

      if (!(num_devices = Pa_GetDeviceCount()))
         return res;

      def_input = Pa_GetDefaultInputDevice();
      def_output = Pa_GetDefaultOutputDevice();

      for (index = 0; 
         index < num_devices && (input_params.device == paNoDevice 
            || output_params.device == paNoDevice); 
         index++) 
      {
         const PaDeviceInfo *dev = Pa_GetDeviceInfo(index);

         if (dev->maxInputChannels) {
            if ( (index == def_input && !strcasecmp(pvt->input_device, "default")) ||
               !strcasecmp(pvt->input_device, dev->name) )
               input_params.device = index;
         }

         if (dev->maxOutputChannels) {
            if ( (index == def_output && !strcasecmp(pvt->output_device, "default")) ||
               !strcasecmp(pvt->output_device, dev->name) )
               output_params.device = index;
         }
      }

      if (input_params.device == paNoDevice)
         ast_log(LOG_ERROR, "No input device found for console device '%s'\n", pvt->name);
      if (output_params.device == paNoDevice)
         ast_log(LOG_ERROR, "No output device found for console device '%s'\n", pvt->name);

      res = Pa_OpenStream(&pvt->stream, &input_params, &output_params,
         SAMPLE_RATE, NUM_SAMPLES, paNoFlag, NULL, NULL);
   }

   return res;
}

static int pvt_cmp_cb	(	void *	obj,
		void *	arg,
		int	flags
	)			[static]

Definition at line 1430 of file chan_console.c.

References CMP_MATCH, and console_pvt::name.

Referenced by load_module(), and load_objects().

{
   struct console_pvt *pvt = obj, *pvt2 = arg;

   return !strcasecmp(pvt->name, pvt2->name) ? CMP_MATCH : 0;
}

static void pvt_destructor

(

void *

obj

)

[static]

Definition at line 1306 of file chan_console.c.

References ast_string_field_free_memory.

Referenced by build_device(), load_module(), new_iax(), and unload_module().

{
   struct console_pvt *pvt = obj;

   ast_string_field_free_memory(pvt);
}

static int pvt_hash_cb	(	const void *	obj,
		const int	flags
	)			[static]

Definition at line 1423 of file chan_console.c.

References ast_str_hash(), and console_pvt::name.

Referenced by load_module(), and load_objects().

{
   const struct console_pvt *pvt = obj;

   return ast_str_hash(pvt->name);
}

static int pvt_mark_destroy_cb	(	void *	obj,
		void *	arg,
		int	flags
	)			[static]

Definition at line 1354 of file chan_console.c.

References console_pvt::destroy.

Referenced by load_config().

{
   struct console_pvt *pvt = obj;
   pvt->destroy = 1;
   return 0;
}

static struct console_pvt* ref_pvt

(

struct console_pvt *

pvt

)

[static, read]

Definition at line 233 of file chan_console.c.

References ao2_ref().

Referenced by console_new(), get_active_pvt(), and set_active().

{
   if (pvt)
      ao2_ref(pvt, +1);
   return pvt;
}

static int reload

(

void

)

[static]

Definition at line 1511 of file chan_console.c.

References load_config().

{
   return load_config(1);
}

static void set_active	(	struct console_pvt *	pvt,
		const char *	value
	)			[static]

Definition at line 1132 of file chan_console.c.

References active_lock, ast_log(), ast_rwlock_unlock(), ast_rwlock_wrlock(), ast_true(), globals, LOG_ERROR, ref_pvt(), and unref_pvt().

Referenced by cli_console_active(), and store_config_core().

{
   if (pvt == &globals) {
      ast_log(LOG_ERROR, "active is only valid as a per-device setting\n");
      return;
   }

   if (!ast_true(value))
      return;

   ast_rwlock_wrlock(&active_lock);
   if (active_pvt)
      unref_pvt(active_pvt);
   active_pvt = ref_pvt(pvt);
   ast_rwlock_unlock(&active_lock);
}

static void set_pvt_defaults

(

struct console_pvt *

pvt

)

[static]

Set default values for a pvt struct.

Note:

This function expects the pvt lock to be held.

Definition at line 1234 of file chan_console.c.

References ast_mutex_lock(), ast_mutex_unlock(), ast_string_field_set, console_pvt::autoanswer, cid_name, cid_num, context, exten, globals, globals_lock, language, mohinterpret, and console_pvt::overridecontext.

Referenced by build_device(), and load_config().

{
   if (pvt == &globals) {
      ast_string_field_set(pvt, mohinterpret, "default");
      ast_string_field_set(pvt, context, "default");
      ast_string_field_set(pvt, exten, "s");
      ast_string_field_set(pvt, language, "");
      ast_string_field_set(pvt, cid_num, "");
      ast_string_field_set(pvt, cid_name, "");
   
      pvt->overridecontext = 0;
      pvt->autoanswer = 0;
   } else {
      ast_mutex_lock(&globals_lock);

      ast_string_field_set(pvt, mohinterpret, globals.mohinterpret);
      ast_string_field_set(pvt, context, globals.context);
      ast_string_field_set(pvt, exten, globals.exten);
      ast_string_field_set(pvt, language, globals.language);
      ast_string_field_set(pvt, cid_num, globals.cid_num);
      ast_string_field_set(pvt, cid_name, globals.cid_name);

      pvt->overridecontext = globals.overridecontext;
      pvt->autoanswer = globals.autoanswer;

      ast_mutex_unlock(&globals_lock);
   }
}

static int start_stream

(

struct console_pvt *

pvt

)

[static]

Definition at line 352 of file chan_console.c.

References ast_debug, ast_log(), ast_pthread_create_background, console_pvt_lock, console_pvt_unlock, LOG_ERROR, LOG_WARNING, open_stream(), console_pvt::stream, stream_monitor(), console_pvt::streamstate, and console_pvt::thread.

Referenced by console_answer(), console_call(), and console_new().

{
   PaError res;
   int ret_val = 0;

   console_pvt_lock(pvt);

   if (pvt->streamstate)
      goto return_unlock;

   pvt->streamstate = 1;
   ast_debug(1, "Starting stream\n");

   res = open_stream(pvt);
   if (res != paNoError) {
      ast_log(LOG_WARNING, "Failed to open stream - (%d) %s\n",
         res, Pa_GetErrorText(res));
      ret_val = -1;
      goto return_unlock;
   }

   res = Pa_StartStream(pvt->stream);
   if (res != paNoError) {
      ast_log(LOG_WARNING, "Failed to start stream - (%d) %s\n",
         res, Pa_GetErrorText(res));
      ret_val = -1;
      goto return_unlock;
   }

   if (ast_pthread_create_background(&pvt->thread, NULL, stream_monitor, pvt)) {
      ast_log(LOG_ERROR, "Failed to start stream monitor thread\n");
      ret_val = -1;
   }

return_unlock:
   console_pvt_unlock(pvt);

   return ret_val;
}

static int stop_stream

(

struct console_pvt *

pvt

)

[static]

Definition at line 392 of file chan_console.c.

References AST_PTHREADT_NULL, console_pvt_lock, console_pvt_unlock, console_pvt::stream, console_pvt::streamstate, and console_pvt::thread.

Referenced by console_hangup(), and stop_streams().

{
   if (!pvt->streamstate || pvt->thread == AST_PTHREADT_NULL)
      return 0;

   pthread_cancel(pvt->thread);
   pthread_kill(pvt->thread, SIGURG);
   pthread_join(pvt->thread, NULL);

   console_pvt_lock(pvt);
   Pa_AbortStream(pvt->stream);
   Pa_CloseStream(pvt->stream);
   pvt->stream = NULL;
   pvt->streamstate = 0;
   console_pvt_unlock(pvt);

   return 0;
}

static void stop_streams

(

void

)

[static]

Definition at line 1437 of file chan_console.c.

References ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next(), console_pvt::hookstate, stop_stream(), and unref_pvt().

Referenced by unload_module().

{
   struct console_pvt *pvt;
   struct ao2_iterator i;

   i = ao2_iterator_init(pvts, 0);
   while ((pvt = ao2_iterator_next(&i))) {
      if (pvt->hookstate)
         stop_stream(pvt);
      unref_pvt(pvt);
   }
   ao2_iterator_destroy(&i);
}

static void store_callerid	(	struct console_pvt *	pvt,
		const char *	value
	)			[static]

Definition at line 1263 of file chan_console.c.

References ast_callerid_split(), ast_string_field_set, cid_name, and cid_num.

Referenced by store_config_core().

{
   char cid_name[256];
   char cid_num[256];

   ast_callerid_split(value, cid_name, sizeof(cid_name), 
      cid_num, sizeof(cid_num));

   ast_string_field_set(pvt, cid_name, cid_name);
   ast_string_field_set(pvt, cid_num, cid_num);
}

static void store_config_core	(	struct console_pvt *	pvt,
		const char *	var,
		const char *	value
	)			[static]

Store a configuration parameter in a pvt struct.

Note:

This function expects the pvt lock to be held.

Definition at line 1280 of file chan_console.c.

References ast_jb_read_conf(), ast_log(), console_pvt::autoanswer, context, CV_BOOL, CV_END, CV_F, CV_START, CV_STRFIELD, exten, global_jbconf, globals, language, LOG_WARNING, mohinterpret, console_pvt::overridecontext, set_active(), and store_callerid().

Referenced by build_device(), console_cmd(), load_config(), and store_config().

{
   if (pvt == &globals && !ast_jb_read_conf(&global_jbconf, var, value))
      return;

   CV_START(var, value);

   CV_STRFIELD("context", pvt, context);
   CV_STRFIELD("extension", pvt, exten);
   CV_STRFIELD("mohinterpret", pvt, mohinterpret);
   CV_STRFIELD("language", pvt, language);
   CV_F("callerid", store_callerid(pvt, value));
   CV_BOOL("overridecontext", pvt->overridecontext);
   CV_BOOL("autoanswer", pvt->autoanswer);

   if (pvt != &globals) {
      CV_F("active", set_active(pvt, value))
      CV_STRFIELD("input_device", pvt, input_device);
      CV_STRFIELD("output_device", pvt, output_device);
   }

   ast_log(LOG_WARNING, "Unknown option '%s'\n", var);

   CV_END;
}

static void* stream_monitor

(

void *

data

)

[static]

Stream monitor thread.

• data A pointer to the console_pvt structure that contains the portaudio stream that needs to be monitored.

This function runs in its own thread to monitor data coming in from a portaudio stream. When enough data is available, it is queued up to be read from the Asterisk channel.

Definition at line 265 of file chan_console.c.

References AST_FORMAT_SLINEAR16, AST_FRAME_VOICE, ast_queue_frame(), buf, ast_frame::frametype, NUM_SAMPLES, console_pvt::owner, ast_frame::samples, and console_pvt::stream.

Referenced by start_stream().

{
   struct console_pvt *pvt = data;
   char buf[NUM_SAMPLES * sizeof(int16_t)];
   PaError res;
   struct ast_frame f = {
      .frametype = AST_FRAME_VOICE,
      .subclass = AST_FORMAT_SLINEAR16,
      .src = "console_stream_monitor",
      .data = buf,
      .datalen = sizeof(buf),
      .samples = sizeof(buf) / sizeof(int16_t),
   };

   for (;;) {
      pthread_testcancel();
      res = Pa_ReadStream(pvt->stream, buf, sizeof(buf) / sizeof(int16_t));
      pthread_testcancel();

      if (res == paNoError)
         ast_queue_frame(pvt->owner, &f);
   }

   return NULL;
}

static int unload_module

(

void

)

[static]

Definition at line 1451 of file chan_console.c.

References ao2_ref(), ARRAY_LEN, ast_channel_unregister(), ast_cli_unregister_multiple(), globals, pvt_destructor(), and stop_streams().

{
   ast_channel_unregister(&console_tech);
   ast_cli_unregister_multiple(cli_console, ARRAY_LEN(cli_console));

   stop_streams();

   Pa_Terminate();

   /* Will unref all the pvts so they will get destroyed, too */
   ao2_ref(pvts, -1);

   pvt_destructor(&globals);

   return 0;
}

static struct console_pvt* unref_pvt

(

struct console_pvt *

pvt

)

[static, read]

Definition at line 240 of file chan_console.c.

References ao2_ref().

Referenced by build_device(), cli_console_active(), cli_console_answer(), cli_console_autoanswer(), cli_console_dial(), cli_console_flash(), cli_console_hangup(), cli_console_mute(), cli_console_sendtext(), cli_list_devices(), console_hangup(), console_request(), destroy_pvts(), set_active(), and stop_streams().

{
   ao2_ref(pvt, -1);
   return NULL;
}

---

Variable Documentation

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

Definition at line 1520 of file chan_console.c.

ast_rwlock_t active_lock [static]

Definition at line 174 of file chan_console.c.

Referenced by destroy_pvts(), get_active_pvt(), and set_active().

struct console_pvt* active_pvt [static]

Definition at line 173 of file chan_console.c.

const struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 1520 of file chan_console.c.

struct ast_cli_entry cli_console[] [static]

Definition at line 1216 of file chan_console.c.

const char config_file[] = "console.conf" [static]

Definition at line 116 of file chan_console.c.

struct ast_channel_tech console_tech [static]

Definition at line 210 of file chan_console.c.

struct ast_jb_conf default_jbconf [static]

Global jitterbuffer configuration.

Note:

Disabled by default.

Definition at line 181 of file chan_console.c.

struct ast_jb_conf global_jbconf [static]

Definition at line 187 of file chan_console.c.

struct console_pvt globals [static]

Console pvt structure.

Currently, this is a singleton object. However, multiple instances will be needed when this module is updated for multiple device support.

ast_mutex_t globals_lock = ((ast_mutex_t) PTHREAD_MUTEX_INITIALIZER ) [static]

Definition at line 168 of file chan_console.c.

Referenced by load_config(), and set_pvt_defaults().

struct ao2_container* pvts [static]

Definition at line 170 of file chan_console.c.

Referenced by setup_dahdi().