ASTERISK_REGISTER_FILE no longer has any purpose so this commit removes all traces of it. Previously exported symbols removed: * __ast_register_file * __ast_unregister_file * ast_complete_source_filename This also removes the mtx_prof static variable that was declared when MTX_PROFILE was enabled. This variable was only used in lock.c so it is now initialized in that file only. ASTERISK-26480 #close Change-Id: I1074af07d71f9e159c48ef36631aa432c86f9966
235 lines
6.3 KiB
C
235 lines
6.3 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 2015, Digium, Inc.
|
|
*
|
|
* Matt Jordan <mjordan@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 Function that intercepts HOLD frames from channels and raises events
|
|
*
|
|
* \author Matt Jordan <mjordan@digium.com>
|
|
*
|
|
* \ingroup functions
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<support_level>core</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/channel.h"
|
|
#include "asterisk/pbx.h"
|
|
#include "asterisk/app.h"
|
|
#include "asterisk/frame.h"
|
|
#include "asterisk/stasis.h"
|
|
#include "asterisk/stasis_channels.h"
|
|
|
|
/*** DOCUMENTATION
|
|
<function name="HOLD_INTERCEPT" language="en_US">
|
|
<synopsis>
|
|
Intercepts hold frames on a channel and raises an event instead of passing the frame on
|
|
</synopsis>
|
|
<syntax>
|
|
<parameter name="action" required="true">
|
|
<optionlist>
|
|
<option name="remove">
|
|
<para>W/O. Removes the hold interception function.</para>
|
|
</option>
|
|
<option name="set">
|
|
<para>W/O. Enable hold interception on the channel. When
|
|
enabled, the channel will intercept any hold action that
|
|
is signalled from the device, and instead simply raise an
|
|
event (AMI/ARI) indicating that the channel wanted to put other
|
|
parties on hold.</para>
|
|
</option>
|
|
</optionlist>
|
|
</parameter>
|
|
</syntax>
|
|
</function>
|
|
***/
|
|
|
|
/*! \brief Private data structure used with the function's datastore */
|
|
struct hold_intercept_data {
|
|
int framehook_id;
|
|
};
|
|
|
|
/*! \brief The channel datastore the function uses to store state */
|
|
static const struct ast_datastore_info hold_intercept_datastore = {
|
|
.type = "hold_intercept",
|
|
};
|
|
|
|
/*! \internal \brief Disable hold interception on the channel */
|
|
static int remove_hold_intercept(struct ast_channel *chan)
|
|
{
|
|
struct ast_datastore *datastore = NULL;
|
|
struct hold_intercept_data *data;
|
|
SCOPED_CHANNELLOCK(chan_lock, chan);
|
|
|
|
datastore = ast_channel_datastore_find(chan, &hold_intercept_datastore, NULL);
|
|
if (!datastore) {
|
|
ast_log(AST_LOG_WARNING, "Cannot remove HOLD_INTERCEPT from %s: HOLD_INTERCEPT not currently enabled\n",
|
|
ast_channel_name(chan));
|
|
return -1;
|
|
}
|
|
data = datastore->data;
|
|
|
|
if (ast_framehook_detach(chan, data->framehook_id)) {
|
|
ast_log(AST_LOG_WARNING, "Failed to remove HOLD_INTERCEPT framehook from channel %s\n",
|
|
ast_channel_name(chan));
|
|
return -1;
|
|
}
|
|
|
|
if (ast_channel_datastore_remove(chan, datastore)) {
|
|
ast_log(AST_LOG_WARNING, "Failed to remove HOLD_INTERCEPT datastore from channel %s\n",
|
|
ast_channel_name(chan));
|
|
return -1;
|
|
}
|
|
ast_datastore_free(datastore);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! \brief Frame hook that is called to intercept hold/unhold */
|
|
static struct ast_frame *hold_intercept_framehook(struct ast_channel *chan,
|
|
struct ast_frame *f, enum ast_framehook_event event, void *data)
|
|
{
|
|
int frame_type;
|
|
|
|
if (!f || (event != AST_FRAMEHOOK_EVENT_WRITE)) {
|
|
return f;
|
|
}
|
|
|
|
if (f->frametype != AST_FRAME_CONTROL) {
|
|
return f;
|
|
}
|
|
|
|
frame_type = f->subclass.integer;
|
|
if (frame_type != AST_CONTROL_HOLD && frame_type != AST_CONTROL_UNHOLD) {
|
|
return f;
|
|
}
|
|
|
|
/* Munch munch */
|
|
ast_frfree(f);
|
|
f = &ast_null_frame;
|
|
|
|
ast_channel_publish_cached_blob(chan,
|
|
frame_type == AST_CONTROL_HOLD ? ast_channel_hold_type() : ast_channel_unhold_type(),
|
|
NULL);
|
|
|
|
return f;
|
|
}
|
|
|
|
/*! \brief Callback function which informs upstream if we are consuming a frame of a specific type */
|
|
static int hold_intercept_framehook_consume(void *data, enum ast_frame_type type)
|
|
{
|
|
return (type == AST_FRAME_CONTROL ? 1 : 0);
|
|
}
|
|
|
|
/*! \internal \brief Enable hold interception on the channel */
|
|
static int set_hold_intercept(struct ast_channel *chan)
|
|
{
|
|
struct ast_datastore *datastore;
|
|
struct hold_intercept_data *data;
|
|
static struct ast_framehook_interface hold_framehook_interface = {
|
|
.version = AST_FRAMEHOOK_INTERFACE_VERSION,
|
|
.event_cb = hold_intercept_framehook,
|
|
.consume_cb = hold_intercept_framehook_consume,
|
|
.disable_inheritance = 1,
|
|
};
|
|
SCOPED_CHANNELLOCK(chan_lock, chan);
|
|
|
|
datastore = ast_channel_datastore_find(chan, &hold_intercept_datastore, NULL);
|
|
if (datastore) {
|
|
ast_log(AST_LOG_WARNING, "HOLD_INTERCEPT already set on '%s'\n",
|
|
ast_channel_name(chan));
|
|
return 0;
|
|
}
|
|
|
|
datastore = ast_datastore_alloc(&hold_intercept_datastore, NULL);
|
|
if (!datastore) {
|
|
return -1;
|
|
}
|
|
|
|
data = ast_calloc(1, sizeof(*data));
|
|
if (!data) {
|
|
ast_datastore_free(datastore);
|
|
return -1;
|
|
}
|
|
|
|
data->framehook_id = ast_framehook_attach(chan, &hold_framehook_interface);
|
|
if (data->framehook_id < 0) {
|
|
ast_log(AST_LOG_WARNING, "Failed to attach HOLD_INTERCEPT framehook to '%s'\n",
|
|
ast_channel_name(chan));
|
|
ast_datastore_free(datastore);
|
|
ast_free(data);
|
|
return -1;
|
|
}
|
|
datastore->data = data;
|
|
|
|
ast_channel_datastore_add(chan, datastore);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*! \internal \brief HOLD_INTERCEPT write function callback */
|
|
static int hold_intercept_fn_write(struct ast_channel *chan, const char *function,
|
|
char *data, const char *value)
|
|
{
|
|
int res;
|
|
|
|
if (!chan) {
|
|
return -1;
|
|
}
|
|
|
|
if (ast_strlen_zero(data)) {
|
|
ast_log(AST_LOG_WARNING, "HOLD_INTERCEPT requires an argument\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!strcasecmp(data, "set")) {
|
|
res = set_hold_intercept(chan);
|
|
} else if (!strcasecmp(data, "remove")) {
|
|
res = remove_hold_intercept(chan);
|
|
} else {
|
|
ast_log(AST_LOG_WARNING, "HOLD_INTERCEPT: unknown option %s\n", data);
|
|
res = -1;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/*! \brief Definition of the HOLD_INTERCEPT function */
|
|
static struct ast_custom_function hold_intercept_function = {
|
|
.name = "HOLD_INTERCEPT",
|
|
.write = hold_intercept_fn_write,
|
|
};
|
|
|
|
/*! \internal \brief Unload the module */
|
|
static int unload_module(void)
|
|
{
|
|
return ast_custom_function_unregister(&hold_intercept_function);
|
|
}
|
|
|
|
/*! \internal \brief Load the module */
|
|
static int load_module(void)
|
|
{
|
|
return ast_custom_function_register(&hold_intercept_function) ? AST_MODULE_LOAD_FAILURE : AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Hold interception dialplan function");
|