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Merged revisions 52049 via svnmerge from

Browse Source 
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r52049 | file | 2007-01-24 13:20:05 -0500 (Wed, 24 Jan 2007) | 2 lines

Merge in dialing API and the app_page that uses it. (issue #BE-118)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@52050 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.6.0
Joshua Colp 19 years ago
parent 2396e24e65
commit 9826fc599b
4 changed files with 989 additions and 80 deletions
Show Stats Download Patch File Download Diff File

123
apps/app_page.c
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@ -49,6 +49,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/chanvars.h"
#include "asterisk/utils.h"
#include "asterisk/devicestate.h"
#include "asterisk/dial.h"
static const char *app_page= "Page";
@ -79,89 +80,18 @@ AST_APP_OPTIONS(page_opts, {
AST_APP_OPTION('s', PAGE_SKIP),
});
struct calloutdata {
char cidnum[64];
char cidname[64];
char tech[64];
char resource[256];
char meetmeopts[64];
struct ast_variable *variables;
};
static void *page_thread(void *data)
{
struct calloutdata *cd = data;
ast_pbx_outgoing_app(cd->tech, AST_FORMAT_SLINEAR, cd->resource, 30000,
"MeetMe", cd->meetmeopts, NULL, 0, cd->cidnum, cd->cidname, cd->variables, NULL, NULL);
free(cd);
return NULL;
}
static void launch_page(struct ast_channel *chan, const char *meetmeopts, const char *tech, const char *resource)
{
struct calloutdata *cd;
const char *varname;
struct ast_variable *lastvar = NULL;
struct ast_var_t *varptr;
pthread_t t;
pthread_attr_t attr;
if (!(cd = ast_calloc(1, sizeof(*cd))))
return;
/* Copy data from our page over */
ast_copy_string(cd->cidnum, chan->cid.cid_num ? chan->cid.cid_num : "", sizeof(cd->cidnum));
ast_copy_string(cd->cidname, chan->cid.cid_name ? chan->cid.cid_name : "", sizeof(cd->cidname));
ast_copy_string(cd->tech, tech, sizeof(cd->tech));
ast_copy_string(cd->resource, resource, sizeof(cd->resource));
ast_copy_string(cd->meetmeopts, meetmeopts, sizeof(cd->meetmeopts));
AST_LIST_TRAVERSE(&chan->varshead, varptr, entries) {
struct ast_variable *newvar = NULL;
if (!(varname = ast_var_full_name(varptr)) || (varname[0] != '_'))
continue;
if (varname[1] == '_')
newvar = ast_variable_new(varname, ast_var_value(varptr));
else
newvar = ast_variable_new(&varname[1], ast_var_value(varptr));
if (newvar) {
if (lastvar)
lastvar->next = newvar;
else
cd->variables = newvar;
lastvar = newvar;
}
}
/* Spawn thread to handle this page */
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (ast_pthread_create(&t, &attr, page_thread, cd)) {
ast_log(LOG_WARNING, "Unable to create paging thread: %s\n", strerror(errno));
free(cd);
}
return;
}
#define MAX_DIALS 128
static int page_exec(struct ast_channel *chan, void *data)
{
struct ast_module_user *u;
char *options;
char *tech, *resource;
char meetmeopts[80];
char *options, *tech, *resource, *tmp;
char meetmeopts[88], originator[AST_CHANNEL_NAME];
struct ast_flags flags = { 0 };
unsigned int confid = ast_random();
struct ast_app *app;
char *tmp;
int res=0;
char originator[AST_CHANNEL_NAME];
int res = 0, pos = 0, i = 0;
struct ast_dial *dials[MAX_DIALS];
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "This application requires at least one argument (destination(s) to page)\n");
@ -186,16 +116,19 @@ static int page_exec(struct ast_channel *chan, void *data)
if (options)
ast_app_parse_options(page_opts, &flags, NULL, options);
snprintf(meetmeopts, sizeof(meetmeopts), "%ud|%s%sqxdw(5)", confid, (ast_test_flag(&flags, PAGE_DUPLEX) ? "" : "m"),
snprintf(meetmeopts, sizeof(meetmeopts), "MeetMe|%ud|%s%sqxdw(5)", confid, (ast_test_flag(&flags, PAGE_DUPLEX) ? "" : "m"),
(ast_test_flag(&flags, PAGE_RECORD) ? "r" : "") );
/* Go through parsing/calling each device */
while ((tech = strsep(&tmp, "&"))) {
int state = 0;
struct ast_dial *dial = NULL;
/* don't call the originating device */
if (!strcasecmp(tech, originator))
continue;
/* If no resource is available, continue on */
if (!(resource = strchr(tech, '/'))) {
ast_log(LOG_WARNING, "Incomplete destination '%s' supplied.\n", tech);
continue;
@ -206,9 +139,26 @@ static int page_exec(struct ast_channel *chan, void *data)
ast_log(LOG_WARNING, "Destination '%s' has device state '%s'.\n", tech, devstate2str(state));
continue;
}
*resource++ = '\0';
launch_page(chan, meetmeopts, tech, resource);
/* Create a dialing structure */
if (!(dial = ast_dial_create())) {
ast_log(LOG_WARNING, "Failed to create dialing structure.\n");
continue;
}
/* Append technology and resource */
ast_dial_append(dial, tech, resource);
/* Set ANSWER_EXEC as global option */
ast_dial_option_global_enable(dial, AST_DIAL_OPTION_ANSWER_EXEC, meetmeopts);
/* Run this dial in async mode */
ast_dial_run(dial, chan, 1);
/* Put in our dialing array */
dials[pos++] = dial;
}
if (!ast_test_flag(&flags, PAGE_QUIET)) {
@ -223,6 +173,21 @@ static int page_exec(struct ast_channel *chan, void *data)
pbx_exec(chan, app, meetmeopts);
}
/* Go through each dial attempt cancelling, joining, and destroying */
for (i = 0; i < pos; i++) {
struct ast_dial *dial = dials[i];
/* If the dial is already answered, then they will/should get kicked out by Meetme */
if (ast_dial_status(dial) != AST_DIAL_RESULT_ANSWERED)
ast_dial_join(dial);
/* Hangup all channels */
ast_dial_hangup(dial);
/* Destroy dialing structure */
ast_dial_destroy(dial);
}
ast_module_user_remove(u);
return -1;

142
include/asterisk/dial.h
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@ -0,0 +1,142 @@
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2007, Digium, Inc.
*
* Joshua Colp <jcolp@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
* \brief Dialing API
*/
#ifndef _ASTERISK_DIAL_H
#define _ASTERISK_DIAL_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
/*! \brief Main dialing structure. Contains global options, channels being dialed, and more! */
struct ast_dial;
/*! \brief Dialing channel structure. Contains per-channel dialing options, asterisk channel, and more! */
struct ast_dial_channel;
/*! \brief List of options that are applicable either globally or per dialed channel */
enum ast_dial_option {
AST_DIAL_OPTION_RINGING, /*! Always indicate ringing to caller */
AST_DIAL_OPTION_ANSWER_EXEC, /*! Execute application upon answer in async mode */
AST_DIAL_OPTION_MAX, /*! End terminator -- must always remain last */
};
/*! \brief List of return codes for dial run API calls */
enum ast_dial_result {
AST_DIAL_RESULT_INVALID = 0, /*! Invalid options were passed to run function */
AST_DIAL_RESULT_FAILED, /*! Attempts to dial failed before reaching critical state */
AST_DIAL_RESULT_TRYING, /*! Currently trying to dial */
AST_DIAL_RESULT_RINGING, /*! Dial is presently ringing */
AST_DIAL_RESULT_PROGRESS, /*! Dial is presently progressing */
AST_DIAL_RESULT_PROCEEDING, /*! Dial is presently proceeding */
AST_DIAL_RESULT_ANSWERED, /*! A channel was answered */
AST_DIAL_RESULT_TIMEOUT, /*! Timeout was tripped, nobody answered */
AST_DIAL_RESULT_HANGUP, /*! Caller hung up */
AST_DIAL_RESULT_UNANSWERED, /*! Nobody answered */
};
/*! \brief New dialing structure
* \note Create a dialing structure
* \return Returns a calloc'd ast_dial structure, NULL on failure
*/
struct ast_dial *ast_dial_create(void);
/*! \brief Append a channel
* \note Appends a channel to a dialing structure
* \return Returns channel reference number on success, -1 on failure
*/
int ast_dial_append(struct ast_dial *dial, const char *tech, const char *device);
/*! \brief Execute dialing synchronously or asynchronously
* \note Dials channels in a dial structure.
* \return Returns dial result code. (TRYING/INVALID/FAILED/ANSWERED/TIMEOUT/UNANSWERED).
*/
enum ast_dial_result ast_dial_run(struct ast_dial *dial, struct ast_channel *chan, int async);
/*! \brief Return channel that answered
* \note Returns the Asterisk channel that answered
* \param dial Dialing structure
*/
struct ast_channel *ast_dial_answered(struct ast_dial *dial);
/*! \brief Return status of dial
* \note Returns the status of the dial attempt
* \param dial Dialing structure
*/
enum ast_dial_result ast_dial_status(struct ast_dial *dial);
/*! \brief Cancel async thread
* \note Cancel a running async thread
* \param dial Dialing structure
*/
enum ast_dial_result ast_dial_join(struct ast_dial *dial);
/*! \brief Hangup channels
* \note Hangup all active channels
* \param dial Dialing structure
*/
void ast_dial_hangup(struct ast_dial *dial);
/*! \brief Destroys a dialing structure
* \note Cancels dialing and destroys (free's) the given ast_dial structure
* \param dial Dialing structure to free
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_destroy(struct ast_dial *dial);
/*! \brief Enables an option globally
* \param dial Dial structure to enable option on
* \param option Option to enable
* \param data Data to pass to this option (not always needed)
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_global_enable(struct ast_dial *dial, enum ast_dial_option option, void *data);
/*! \brief Enables an option per channel
* \param dial Dial structure
* \param num Channel number to enable option on
* \param option Option to enable
* \param data Data to pass to this option (not always needed)
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_enable(struct ast_dial *dial, int num, enum ast_dial_option option, void *data);
/*! \brief Disables an option globally
* \param dial Dial structure to disable option on
* \param option Option to disable
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_global_disable(struct ast_dial *dial, enum ast_dial_option option);
/*! \brief Disables an option per channel
* \param dial Dial structure
* \param num Channel number to disable option on
* \param option Option to disable
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_disable(struct ast_dial *dial, int num, enum ast_dial_option option);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif /* _ASTERISK_DIAL_H */

2
main/Makefile
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@ -26,7 +26,7 @@ OBJS= io.o sched.o logger.o frame.o loader.o config.o channel.o \
utils.o plc.o jitterbuf.o dnsmgr.o devicestate.o \
netsock.o slinfactory.o ast_expr2.o ast_expr2f.o \
cryptostub.o sha1.o http.o fixedjitterbuf.o abstract_jb.o \
strcompat.o threadstorage.o
strcompat.o threadstorage.o dial.o
# we need to link in the objects statically, not as a library, because
# otherwise modules will not have them available if none of the static

802
main/dial.c
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@ -0,0 +1,802 @@
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2007, Digium, Inc.
*
* Joshua Colp <jcolp@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Dialing API
*
* \author Joshua Colp <jcolp@digium.com>
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/options.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/linkedlists.h"
#include "asterisk/dial.h"
#include "asterisk/pbx.h"
/*! \brief Main dialing structure. Contains global options, channels being dialed, and more! */
struct ast_dial {
int num; /*! Current number to give to next dialed channel */
enum ast_dial_result status; /*! Status of dial */
void *options[AST_DIAL_OPTION_MAX]; /*! Global options */
AST_LIST_HEAD_NOLOCK(, ast_dial_channel) channels; /*! Channels being dialed */
pthread_t thread; /*! Thread (if running in async) */
};
/*! \brief Dialing channel structure. Contains per-channel dialing options, asterisk channel, and more! */
struct ast_dial_channel {
int num; /*! Unique number for dialed channel */
const char *tech; /*! Technology being dialed */
const char *device; /*! Device being dialed */
void *options[AST_DIAL_OPTION_MAX]; /*! Channel specific options */
int cause; /*! Cause code in case of failure */
struct ast_channel *owner; /*! Asterisk channel */
AST_LIST_ENTRY(ast_dial_channel) list; /*! Linked list information */
};
/*! \brief Typedef for dial option enable */
typedef void *(*ast_dial_option_cb_enable)(void *data);
/*! \brief Typedef for dial option disable */
typedef int (*ast_dial_option_cb_disable)(void *data);
/* Structure for 'ANSWER_EXEC' option */
struct answer_exec_struct {
char app[AST_MAX_APP]; /* Application name */
char *args; /* Application arguments */
};
/* Enable function for 'ANSWER_EXEC' option */
static void *answer_exec_enable(void *data)
{
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;
}
/* Disable function for 'ANSWER_EXEC' option */
static int answer_exec_disable(void *data)
{
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)
free(answer_exec->args);
/* This is simple - just free the structure */
free(answer_exec);
return 0;
}
/* Application execution function for 'ANSWER_EXEC' option */
static void answer_exec_run(struct ast_channel *chan, char *app, char *args)
{
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);
return;
}
/*! \brief Options structure - maps options to respective handlers (enable/disable). This list MUST be perfectly kept in order, or else madness will happen. */
static const struct ast_option_types {
enum ast_dial_option option;
ast_dial_option_cb_enable enable;
ast_dial_option_cb_disable disable;
} option_types[] = {
{ AST_DIAL_OPTION_RINGING, NULL, NULL }, /*! Always indicate ringing to caller */
{ AST_DIAL_OPTION_ANSWER_EXEC, answer_exec_enable, answer_exec_disable }, /*! Execute application upon answer in async mode */
{ AST_DIAL_OPTION_MAX, NULL, NULL }, /*! Terminator of list */
};
/* free the buffer if allocated, and set the pointer to the second arg */
#define S_REPLACE(s, new_val) \
do { \
if (s) \
free(s); \
s = (new_val); \
} while (0)
/*! \brief Maximum number of channels we can watch at a time */
#define AST_MAX_WATCHERS 256
/*! \brief Macro for finding the option structure to use on a dialed channel */
#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])
/*! \brief Macro that determines whether a channel is the caller or not */
#define IS_CALLER(chan, owner) (chan == owner ? 1 : 0)
/*! \brief New dialing structure
* \note Create a dialing structure
* \return Returns a calloc'd ast_dial structure, NULL on failure
*/
struct ast_dial *ast_dial_create(void)
{
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_NOLOCK(&dial->channels);
/* Initialize thread to NULL */
dial->thread = AST_PTHREADT_NULL;
return dial;
}
/*! \brief Append a channel
* \note Appends a channel to a dialing structure
* \return Returns channel reference number on success, -1 on failure
*/
int ast_dial_append(struct ast_dial *dial, const char *tech, const char *device)
{
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 = tech;
channel->device = device;
/* Grab reference number from dial structure */
channel->num = ast_atomic_fetchadd_int(&dial->num, +1);
/* Insert into channels list */
AST_LIST_INSERT_TAIL(&dial->channels, channel, list);
return channel->num;
}
/*! \brief Helper function that does the beginning dialing */
static int begin_dial(struct ast_dial *dial, struct ast_channel *chan)
{
struct ast_dial_channel *channel = NULL;
int success = 0, res = 0;
/* Iterate through channel list, requesting and calling each one */
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
char numsubst[AST_MAX_EXTENSION];
/* Copy device string over */
ast_copy_string(numsubst, channel->device, sizeof(numsubst));
/* Request that the channel be created */
if (!(channel->owner = ast_request(channel->tech, chan->nativeformats, numsubst, &channel->cause)))
continue;
channel->owner->appl = "AppDial2";
channel->owner->data = "(Outgoing Line)";
channel->owner->whentohangup = 0;
/* Inherit everything from he who spawned this Dial */
ast_channel_inherit_variables(chan, channel->owner);
/* Copy over callerid information */
S_REPLACE(channel->owner->cid.cid_num, ast_strdup(chan->cid.cid_num));
S_REPLACE(channel->owner->cid.cid_name, ast_strdup(chan->cid.cid_name));
S_REPLACE(channel->owner->cid.cid_ani, ast_strdup(chan->cid.cid_ani));
S_REPLACE(channel->owner->cid.cid_rdnis, ast_strdup(chan->cid.cid_rdnis));
ast_string_field_set(channel->owner, language, chan->language);
ast_string_field_set(channel->owner, accountcode, chan->accountcode);
channel->owner->cdrflags = chan->cdrflags;
if (ast_strlen_zero(channel->owner->musicclass))
ast_string_field_set(channel->owner, musicclass, chan->musicclass);
channel->owner->cid.cid_pres = chan->cid.cid_pres;
channel->owner->cid.cid_ton = chan->cid.cid_ton;
channel->owner->cid.cid_tns = chan->cid.cid_tns;
channel->owner->adsicpe = chan->adsicpe;
channel->owner->transfercapability = chan->transfercapability;
/* Actually call the device */
if ((res = ast_call(channel->owner, numsubst, 0))) {
ast_hangup(channel->owner);
channel->owner = NULL;
} else {
success++;
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Called %s\n", numsubst);
}
}
/* If number of failures matches the number of channels, then this truly failed */
return success;
}
/*! \brief Helper function that finds the dialed channel based on owner */
static struct ast_dial_channel *find_relative_dial_channel(struct ast_dial *dial, struct ast_channel *owner)
{
struct ast_dial_channel *channel = NULL;
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (channel->owner == owner)
break;
}
return channel;
}
/*! \brief Helper function that handles control frames WITH owner */
static void handle_frame(struct ast_dial *dial, struct ast_dial_channel *channel, struct ast_frame *fr, struct ast_channel *chan)
{
if (fr->frametype == AST_FRAME_CONTROL) {
switch (fr->subclass) {
case AST_CONTROL_ANSWER:
if (option_verbose > 2)
ast_verbose( VERBOSE_PREFIX_3 "%s answered %s\n", channel->owner->name, chan->name);
AST_LIST_REMOVE(&dial->channels, channel, list);
AST_LIST_INSERT_HEAD(&dial->channels, channel, list);
dial->status = AST_DIAL_RESULT_ANSWERED;
break;
case AST_CONTROL_BUSY:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "%s is busy\n", channel->owner->name);
ast_hangup(channel->owner);
channel->owner = NULL;
break;
case AST_CONTROL_CONGESTION:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "%s is circuit-busy\n", channel->owner->name);
ast_hangup(channel->owner);
channel->owner = NULL;
break;
case AST_CONTROL_RINGING:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "%s is ringing\n", channel->owner->name);
ast_indicate(chan, AST_CONTROL_RINGING);
break;
case AST_CONTROL_PROGRESS:
if (option_verbose > 2)
ast_verbose (VERBOSE_PREFIX_3 "%s is making progress, passing it to %s\n", channel->owner->name, chan->name);
ast_indicate(chan, AST_CONTROL_PROGRESS);
break;
case AST_CONTROL_VIDUPDATE:
if (option_verbose > 2)
ast_verbose (VERBOSE_PREFIX_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_PROCEEDING:
if (option_verbose > 2)
ast_verbose (VERBOSE_PREFIX_3 "%s is proceeding, passing it to %s\n", channel->owner->name, chan->name);
ast_indicate(chan, AST_CONTROL_PROCEEDING);
break;
case AST_CONTROL_HOLD:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Call on %s placed on hold\n", chan->name);
ast_indicate(chan, AST_CONTROL_HOLD);
break;
case AST_CONTROL_UNHOLD:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_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;
}
/*! \brief Helper function that handles control frames WITHOUT owner */
static void handle_frame_ownerless(struct ast_dial *dial, struct ast_dial_channel *channel, struct ast_frame *fr)
{
/* If we have no owner we can only update the status of the dial structure, so only look at control frames */
if (fr->frametype != AST_FRAME_CONTROL)
return;
switch (fr->subclass) {
case AST_CONTROL_ANSWER:
if (option_verbose > 2)
ast_verbose( VERBOSE_PREFIX_3 "%s answered\n", channel->owner->name);
AST_LIST_REMOVE(&dial->channels, channel, list);
AST_LIST_INSERT_HEAD(&dial->channels, channel, list);
dial->status = AST_DIAL_RESULT_ANSWERED;
break;
case AST_CONTROL_BUSY:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "%s is busy\n", channel->owner->name);
ast_hangup(channel->owner);
channel->owner = NULL;
break;
case AST_CONTROL_CONGESTION:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "%s is circuit-busy\n", channel->owner->name);
ast_hangup(channel->owner);
channel->owner = NULL;
break;
case AST_CONTROL_RINGING:
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "%s is ringing\n", channel->owner->name);
dial->status = AST_DIAL_RESULT_RINGING;
break;
case AST_CONTROL_PROGRESS:
if (option_verbose > 2)
ast_verbose (VERBOSE_PREFIX_3 "%s is making progress\n", channel->owner->name);
dial->status = AST_DIAL_RESULT_PROGRESS;
break;
case AST_CONTROL_PROCEEDING:
if (option_verbose > 2)
ast_verbose (VERBOSE_PREFIX_3 "%s is proceeding\n", channel->owner->name);
dial->status = AST_DIAL_RESULT_PROCEEDING;
break;
default:
break;
}
return;
}
/*! \brief Helper function that basically keeps tabs on dialing attempts */
static enum ast_dial_result monitor_dial(struct ast_dial *dial, struct ast_channel *chan)
{
int timeout = -1, count = 0;
struct ast_channel *cs[AST_MAX_WATCHERS], *who = NULL;
struct ast_dial_channel *channel = NULL;
struct answer_exec_struct *answer_exec = NULL;
/* Switch dialing status to trying */
dial->status = AST_DIAL_RESULT_TRYING;
/* If the "always indicate ringing" option is set, change status to ringing and indicate to the owner if present */
if (dial->options[AST_DIAL_OPTION_RINGING]) {
dial->status = AST_DIAL_RESULT_RINGING;
if (chan)
ast_indicate(chan, AST_CONTROL_RINGING);
}
/* Go into an infinite loop while we are trying */
while ((dial->status != AST_DIAL_RESULT_UNANSWERED) && (dial->status != AST_DIAL_RESULT_ANSWERED) && (dial->status != AST_DIAL_RESULT_HANGUP) && (dial->status != AST_DIAL_RESULT_TIMEOUT)) {
int pos = 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_TRAVERSE(&dial->channels, channel, list) {
if (channel->owner) {
cs[pos++] = channel->owner;
count++;
}
}
/* If we have no outbound channels in progress, switch status to unanswered and stop */
if (!count) {
dial->status = 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 we are not being cancelled and we have no channel, then timeout was tripped */
if (!who)
continue;
/* Find relative dial channel */
if (!chan || !IS_CALLER(chan, who))
channel = find_relative_dial_channel(dial, who);
/* Attempt to read in a frame */
if (!(fr = ast_read(who))) {
/* If this is the caller then we switch status to hangup and stop */
if (chan && IS_CALLER(chan, who)) {
dial->status = AST_DIAL_RESULT_HANGUP;
break;
}
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->status == AST_DIAL_RESULT_ANSWERED) {
/* Hangup everything except that which answered */
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (!channel->owner || channel->owner == who)
continue;
ast_hangup(channel->owner);
channel->owner = NULL;
}
/* 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)))
answer_exec_run(who, answer_exec->app, answer_exec->args);
} else if (dial->status == AST_DIAL_RESULT_HANGUP) {
/* Hangup everything */
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (!channel->owner)
continue;
ast_hangup(channel->owner);
channel->owner = NULL;
}
}
return dial->status;
}
/*! \brief Dial async thread function */
static void *async_dial(void *data)
{
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;
}
/*! \brief Execute dialing synchronously or asynchronously
* \note Dials channels in a dial structure.
* \return Returns dial result code. (TRYING/INVALID/FAILED/ANSWERED/TIMEOUT/UNANSWERED).
*/
enum ast_dial_result ast_dial_run(struct ast_dial *dial, struct ast_channel *chan, int async)
{
enum ast_dial_result res = AST_DIAL_RESULT_TRYING;
/* Ensure required arguments are passed */
if (!dial || !chan)
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))
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) {
/* 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;
}
/*! \brief Return channel that answered
* \note Returns the Asterisk channel that answered
* \param dial Dialing structure
*/
struct ast_channel *ast_dial_answered(struct ast_dial *dial)
{
if (!dial)
return NULL;
return ((dial->status == AST_DIAL_RESULT_ANSWERED) ? AST_LIST_FIRST(&dial->channels)->owner : NULL);
}
/*! \brief Return status of dial
* \note Returns the status of the dial attempt
* \param dial Dialing structure
*/
enum ast_dial_result ast_dial_status(struct ast_dial *dial)
{
return dial->status;
}
/*! \brief Cancel async thread
* \note Cancel a running async thread
* \param dial Dialing structure
*/
enum ast_dial_result ast_dial_join(struct ast_dial *dial)
{
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;
/* Stop the thread */
dial->thread = AST_PTHREADT_STOP;
/* Now we signal it with SIGURG so it will break out of it's waitfor */
pthread_kill(thread, SIGURG);
/* Finally wait for the thread to exit */
pthread_join(thread, NULL);
/* Yay thread is all gone */
dial->thread = AST_PTHREADT_NULL;
return dial->status;
}
/*! \brief Hangup channels
* \note Hangup all active channels
* \param dial Dialing structure
*/
void ast_dial_hangup(struct ast_dial *dial)
{
struct ast_dial_channel *channel = NULL;
if (!dial)
return;
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (channel->owner) {
ast_hangup(channel->owner);
channel->owner = NULL;
}
}
return;
}
/*! \brief Destroys a dialing structure
* \note Destroys (free's) the given ast_dial structure
* \param dial Dialing structure to free
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_destroy(struct ast_dial *dial)
{
int i = 0;
struct ast_dial_channel *channel = NULL;
if (!dial)
return -1;
/* Hangup and deallocate all the dialed channels */
AST_LIST_TRAVERSE(&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 */
free(channel);
}
/* 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;
}
/* Free structure */
free(dial);
return 0;
}
/*! \brief Enables an option globally
* \param dial Dial structure to enable option on
* \param option Option to enable
* \param data Data to pass to this option (not always needed)
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_global_enable(struct ast_dial *dial, enum ast_dial_option option, void *data)
{
/* 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;
}
/*! \brief Enables an option per channel
* \param dial Dial structure
* \param num Channel number to enable option on
* \param option Option to enable
* \param data Data to pass to this option (not always needed)
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_enable(struct ast_dial *dial, int num, enum ast_dial_option option, void *data)
{
struct ast_dial_channel *channel = NULL;
/* Ensure we have required arguments */
if (!dial || AST_LIST_EMPTY(&dial->channels))
return -1;
/* Look for channel, we can sort of cheat and predict things - the last channel in the list will probably be what they want */
if (AST_LIST_LAST(&dial->channels)->num != num) {
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (channel->num == num)
break;
}
} else {
channel = AST_LIST_LAST(&dial->channels);
}
/* If none found, return failure */
if (!channel)
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;
}
/*! \brief Disables an option globally
* \param dial Dial structure to disable option on
* \param option Option to disable
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_global_disable(struct ast_dial *dial, enum ast_dial_option option)
{
/* 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;
}
/*! \brief Disables an option per channel
* \param dial Dial structure
* \param num Channel number to disable option on
* \param option Option to disable
* \return Returns 0 on success, -1 on failure
*/
int ast_dial_option_disable(struct ast_dial *dial, int num, enum ast_dial_option option)
{
struct ast_dial_channel *channel = NULL;
/* Ensure we have required arguments */
if (!dial || AST_LIST_EMPTY(&dial->channels))
return -1;
/* Look for channel, we can sort of cheat and predict things - the last channel in the list will probably be what they want */
if (AST_LIST_LAST(&dial->channels)->num != num) {
AST_LIST_TRAVERSE(&dial->channels, channel, list) {
if (channel->num == num)
break;
}
} else {
channel = AST_LIST_LAST(&dial->channels);
}
/* If none found, return failure */
if (!channel)
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;
}
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