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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2005, Joshua Colp
*
* 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 Directed Call Pickup Support
*
* \ingroup applications
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/lock.h"
#include "asterisk/app.h"
static const char *tdesc = "Directed Call Pickup Application";
static const char *app = "Pickup";
static const char *synopsis = "Directed Call Pickup";
static const char *descrip =
" Pickup(extension[@context]): This application can pickup any ringing channel\n"
"that is calling the specified extension. If no context is specified, the current\n"
"context will be used.\n";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int pickup_exec(struct ast_channel *chan, void *data)
{
int res = 0;
struct localuser *u = NULL;
struct ast_channel *origin = NULL, *target = NULL;
char *tmp = NULL, *exten = NULL, *context = NULL;
char workspace[256] = "";
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Pickup requires an argument (extension) !\n");
return -1;
}
LOCAL_USER_ADD(u);
/* Get the extension and context if present */
exten = data;
context = strchr(data, '@');
if (context) {
*context = '\0';
context++;
}
/* Find a channel to pickup */
origin = ast_get_channel_by_exten_locked(exten, context);
if (origin && origin->cdr) {
ast_cdr_getvar(origin->cdr, "dstchannel", &tmp, workspace,
sizeof(workspace), 0);
if (tmp) {
/* We have a possible channel... now we need to find it! */
target = ast_get_channel_by_name_locked(tmp);
} else {
ast_log(LOG_DEBUG, "No target channel found.\n");
res = -1;
}
ast_mutex_unlock(&origin->lock);
} else {
if (origin)
ast_mutex_unlock(&origin->lock);
ast_log(LOG_DEBUG, "No originating channel found.\n");
}
if (res)
goto out;
if (target && (!target->pbx) && ((target->_state == AST_STATE_RINGING) || (target->_state == AST_STATE_RING))) {
ast_log(LOG_DEBUG, "Call pickup on chan '%s' by '%s'\n", target->name,
chan->name);
res = ast_answer(chan);
if (res) {
ast_log(LOG_WARNING, "Unable to answer '%s'\n", chan->name);
res = -1;
goto out;
}
res = ast_queue_control(chan, AST_CONTROL_ANSWER);
if (res) {
ast_log(LOG_WARNING, "Unable to queue answer on '%s'\n",
chan->name);
res = -1;
goto out;
}
res = ast_channel_masquerade(target, chan);
if (res) {
ast_log(LOG_WARNING, "Unable to masquerade '%s' into '%s'\n", chan->name, target->name);
res = -1;
goto out;
}
} else {
ast_log(LOG_DEBUG, "No call pickup possible...\n");
res = -1;
}
/* Done */
out:
if (target)
ast_mutex_unlock(&target->lock);
LOCAL_USER_REMOVE(u);
return res;
}
int unload_module(void)
{
int res;
res = ast_unregister_application(app);
STANDARD_HANGUP_LOCALUSERS;
return res;
}
int load_module(void)
{
return ast_register_application(app, pickup_exec, synopsis, descrip);
}
char *description(void)
{
return (char *) tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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