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asterisk/apps/app_mixmonitor.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2005, Anthony Minessale II
* Copyright (C) 2005 - 2006, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
* Kevin P. Fleming <kpfleming@digium.com>
*
* Based on app_muxmon.c provided by
* Anthony Minessale II <anthmct@yahoo.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 MixMonitor() - Record a call and mix the audio during the recording
* \ingroup applications
*
* \author Mark Spencer <markster@digium.com>
* \author Kevin P. Fleming <kpfleming@digium.com>
*
* \note Based on app_muxmon.c provided by
* Anthony Minessale II <anthmct@yahoo.com>
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/paths.h" /* use ast_config_AST_MONITOR_DIR */
#include "asterisk/file.h"
#include "asterisk/audiohook.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/cli.h"
#include "asterisk/app.h"
#include "asterisk/channel.h"
#include "asterisk/autochan.h"
#include "asterisk/manager.h"
#include "asterisk/mod_format.h"
/*** DOCUMENTATION
<application name="MixMonitor" language="en_US">
<synopsis>
Record a call and mix the audio during the recording. Use of StopMixMonitor is required
to guarantee the audio file is available for processing during dialplan execution.
</synopsis>
<syntax>
<parameter name="file" required="true" argsep=".">
<argument name="filename" required="true">
<para>If <replaceable>filename</replaceable> is an absolute path, uses that path, otherwise
creates the file in the configured monitoring directory from <filename>asterisk.conf.</filename></para>
</argument>
<argument name="extension" required="true" />
</parameter>
<parameter name="options">
<optionlist>
<option name="a">
<para>Append to the file instead of overwriting it.</para>
</option>
<option name="b">
<para>Only save audio to the file while the channel is bridged.</para>
<note><para>Does not include conferences or sounds played to each bridged party</para></note>
<note><para>If you utilize this option inside a Local channel, you must make sure the Local
channel is not optimized away. To do this, be sure to call your Local channel with the
<literal>/n</literal> option. For example: Dial(Local/start@mycontext/n)</para></note>
</option>
<option name="v">
<para>Adjust the <emphasis>heard</emphasis> volume by a factor of <replaceable>x</replaceable>
(range <literal>-4</literal> to <literal>4</literal>)</para>
<argument name="x" required="true" />
</option>
<option name="V">
<para>Adjust the <emphasis>spoken</emphasis> volume by a factor
of <replaceable>x</replaceable> (range <literal>-4</literal> to <literal>4</literal>)</para>
<argument name="x" required="true" />
</option>
<option name="W">
<para>Adjust both, <emphasis>heard and spoken</emphasis> volumes by a factor
of <replaceable>x</replaceable> (range <literal>-4</literal> to <literal>4</literal>)</para>
<argument name="x" required="true" />
</option>
<option name="r">
<argument name="file" required="true" />
<para>Use the specified file to record the <emphasis>receive</emphasis> audio feed.
Like with the basic filename argument, if an absolute path isn't given, it will create
the file in the configured monitoring directory.</para>
</option>
<option name="t">
<argument name="file" required="true" />
<para>Use the specified file to record the <emphasis>transmit</emphasis> audio feed.
Like with the basic filename argument, if an absolute path isn't given, it will create
the file in the configured monitoring directory.</para>
</option>
</optionlist>
</parameter>
<parameter name="command">
<para>Will be executed when the recording is over.</para>
<para>Any strings matching <literal>^{X}</literal> will be unescaped to <variable>X</variable>.</para>
<para>All variables will be evaluated at the time MixMonitor is called.</para>
</parameter>
</syntax>
<description>
<para>Records the audio on the current channel to the specified file.</para>
<variablelist>
<variable name="MIXMONITOR_FILENAME">
<para>Will contain the filename used to record.</para>
</variable>
</variablelist>
</description>
<see-also>
<ref type="application">Monitor</ref>
<ref type="application">StopMixMonitor</ref>
<ref type="application">PauseMonitor</ref>
<ref type="application">UnpauseMonitor</ref>
</see-also>
</application>
<application name="StopMixMonitor" language="en_US">
<synopsis>
Stop recording a call through MixMonitor, and free the recording's file handle.
</synopsis>
<syntax />
<description>
<para>Stops the audio recording that was started with a call to <literal>MixMonitor()</literal>
on the current channel.</para>
</description>
<see-also>
<ref type="application">MixMonitor</ref>
</see-also>
</application>
<manager name="MixMonitorMute" language="en_US">
<synopsis>
Mute / unMute a Mixmonitor recording.
</synopsis>
<syntax>
<xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
<parameter name="Channel" required="true">
<para>Used to specify the channel to mute.</para>
</parameter>
<parameter name="Direction">
<para>Which part of the recording to mute: read, write or both (from channel, to channel or both channels).</para>
</parameter>
<parameter name="State">
<para>Turn mute on or off : 1 to turn on, 0 to turn off.</para>
</parameter>
</syntax>
<description>
<para>This action may be used to mute a MixMonitor recording.</para>
</description>
</manager>
***/
#define get_volfactor(x) x ? ((x > 0) ? (1 << x) : ((1 << abs(x)) * -1)) : 0
static const char * const app = "MixMonitor";
static const char * const stop_app = "StopMixMonitor";
static const char * const mixmonitor_spy_type = "MixMonitor";
struct mixmonitor {
struct ast_audiohook audiohook;
char *filename;
char *filename_read;
char *filename_write;
char *post_process;
char *name;
unsigned int flags;
struct ast_autochan *autochan;
struct mixmonitor_ds *mixmonitor_ds;
};
enum mixmonitor_flags {
MUXFLAG_APPEND = (1 << 1),
MUXFLAG_BRIDGED = (1 << 2),
MUXFLAG_VOLUME = (1 << 3),
MUXFLAG_READVOLUME = (1 << 4),
MUXFLAG_WRITEVOLUME = (1 << 5),
MUXFLAG_READ = (1 << 6),
MUXFLAG_WRITE = (1 << 7),
MUXFLAG_COMBINED = (1 << 8),
};
enum mixmonitor_args {
OPT_ARG_READVOLUME = 0,
OPT_ARG_WRITEVOLUME,
OPT_ARG_VOLUME,
OPT_ARG_WRITENAME,
OPT_ARG_READNAME,
OPT_ARG_ARRAY_SIZE, /* Always last element of the enum */
};
AST_APP_OPTIONS(mixmonitor_opts, {
AST_APP_OPTION('a', MUXFLAG_APPEND),
AST_APP_OPTION('b', MUXFLAG_BRIDGED),
AST_APP_OPTION_ARG('v', MUXFLAG_READVOLUME, OPT_ARG_READVOLUME),
AST_APP_OPTION_ARG('V', MUXFLAG_WRITEVOLUME, OPT_ARG_WRITEVOLUME),
AST_APP_OPTION_ARG('W', MUXFLAG_VOLUME, OPT_ARG_VOLUME),
AST_APP_OPTION_ARG('r', MUXFLAG_READ, OPT_ARG_READNAME),
AST_APP_OPTION_ARG('t', MUXFLAG_WRITE, OPT_ARG_WRITENAME),
});
struct mixmonitor_ds {
unsigned int destruction_ok;
ast_cond_t destruction_condition;
ast_mutex_t lock;
/* The filestream is held in the datastore so it can be stopped
* immediately during stop_mixmonitor or channel destruction. */
int fs_quit;
struct ast_filestream *fs;
struct ast_filestream *fs_read;
struct ast_filestream *fs_write;
struct ast_audiohook *audiohook;
unsigned int samp_rate;
};
/*!
* \internal
* \pre mixmonitor_ds must be locked before calling this function
*/
static void mixmonitor_ds_close_fs(struct mixmonitor_ds *mixmonitor_ds)
{
unsigned char quitting = 0;
if (mixmonitor_ds->fs) {
quitting = 1;
ast_closestream(mixmonitor_ds->fs);
mixmonitor_ds->fs = NULL;
ast_verb(2, "MixMonitor close filestream (mixed)\n");
}
if (mixmonitor_ds->fs_read) {
quitting = 1;
ast_closestream(mixmonitor_ds->fs_read);
mixmonitor_ds->fs_read = NULL;
ast_verb(2, "MixMonitor close filestream (read)\n");
}
if (mixmonitor_ds->fs_write) {
quitting = 1;
ast_closestream(mixmonitor_ds->fs_write);
mixmonitor_ds->fs_write = NULL;
ast_verb(2, "MixMonitor close filestream (write)\n");
}
if (quitting) {
mixmonitor_ds->fs_quit = 1;
}
}
static void mixmonitor_ds_destroy(void *data)
{
struct mixmonitor_ds *mixmonitor_ds = data;
ast_mutex_lock(&mixmonitor_ds->lock);
mixmonitor_ds->audiohook = NULL;
mixmonitor_ds->destruction_ok = 1;
ast_cond_signal(&mixmonitor_ds->destruction_condition);
ast_mutex_unlock(&mixmonitor_ds->lock);
}
static struct ast_datastore_info mixmonitor_ds_info = {
.type = "mixmonitor",
.destroy = mixmonitor_ds_destroy,
};
static void destroy_monitor_audiohook(struct mixmonitor *mixmonitor)
{
if (mixmonitor->mixmonitor_ds) {
ast_mutex_lock(&mixmonitor->mixmonitor_ds->lock);
mixmonitor->mixmonitor_ds->audiohook = NULL;
ast_mutex_unlock(&mixmonitor->mixmonitor_ds->lock);
}
/* kill the audiohook.*/
ast_audiohook_lock(&mixmonitor->audiohook);
ast_audiohook_detach(&mixmonitor->audiohook);
ast_audiohook_unlock(&mixmonitor->audiohook);
ast_audiohook_destroy(&mixmonitor->audiohook);
}
static int startmon(struct ast_channel *chan, struct ast_audiohook *audiohook)
{
struct ast_channel *peer = NULL;
int res = 0;
if (!chan)
return -1;
ast_audiohook_attach(chan, audiohook);
if (!res && ast_test_flag(chan, AST_FLAG_NBRIDGE) && (peer = ast_bridged_channel(chan)))
ast_softhangup(peer, AST_SOFTHANGUP_UNBRIDGE);
return res;
}
#define SAMPLES_PER_FRAME 160
static void mixmonitor_free(struct mixmonitor *mixmonitor)
{
if (mixmonitor) {
if (mixmonitor->mixmonitor_ds) {
ast_mutex_destroy(&mixmonitor->mixmonitor_ds->lock);
ast_cond_destroy(&mixmonitor->mixmonitor_ds->destruction_condition);
ast_free(mixmonitor->filename_write);
ast_free(mixmonitor->filename_read);
ast_free(mixmonitor->mixmonitor_ds);
ast_free(mixmonitor->name);
ast_free(mixmonitor->post_process);
}
ast_free(mixmonitor);
}
}
static void mixmonitor_save_prep(struct mixmonitor *mixmonitor, char *filename, struct ast_filestream **fs, unsigned int *oflags, int *errflag)
{
/* Initialize the file if not already done so */
char *ext = NULL;
char *last_slash = NULL;
if (!ast_strlen_zero(filename)) {
if (!*fs && !*errflag && !mixmonitor->mixmonitor_ds->fs_quit) {
*oflags = O_CREAT | O_WRONLY;
*oflags |= ast_test_flag(mixmonitor, MUXFLAG_APPEND) ? O_APPEND : O_TRUNC;
last_slash = strrchr(filename, '/');
if ((ext = strrchr(filename, '.')) && (ext > last_slash)) {
*(ext++) = '\0';
} else {
ext = "raw";
}
if (!(*fs = ast_writefile(filename, ext, NULL, *oflags, 0, 0666))) {
ast_log(LOG_ERROR, "Cannot open %s.%s\n", filename, ext);
*errflag = 1;
} else {
struct ast_filestream *tmp = *fs;
mixmonitor->mixmonitor_ds->samp_rate = MAX(mixmonitor->mixmonitor_ds->samp_rate, ast_format_rate(&tmp->fmt->format));
}
}
}
}
static void *mixmonitor_thread(void *obj)
{
struct mixmonitor *mixmonitor = obj;
struct ast_filestream **fs = NULL;
struct ast_filestream **fs_read = NULL;
struct ast_filestream **fs_write = NULL;
unsigned int oflags;
int errflag = 0;
struct ast_format format_slin;
ast_verb(2, "Begin MixMonitor Recording %s\n", mixmonitor->name);
fs = &mixmonitor->mixmonitor_ds->fs;
fs_read = &mixmonitor->mixmonitor_ds->fs_read;
fs_write = &mixmonitor->mixmonitor_ds->fs_write;
ast_mutex_lock(&mixmonitor->mixmonitor_ds->lock);
mixmonitor_save_prep(mixmonitor, mixmonitor->filename, fs, &oflags, &errflag);
mixmonitor_save_prep(mixmonitor, mixmonitor->filename_read, fs_read, &oflags, &errflag);
mixmonitor_save_prep(mixmonitor, mixmonitor->filename_write, fs_write, &oflags, &errflag);
ast_format_set(&format_slin, ast_format_slin_by_rate(mixmonitor->mixmonitor_ds->samp_rate), 0);
ast_mutex_unlock(&mixmonitor->mixmonitor_ds->lock);
/* The audiohook must enter and exit the loop locked */
ast_audiohook_lock(&mixmonitor->audiohook);
while (mixmonitor->audiohook.status == AST_AUDIOHOOK_STATUS_RUNNING && !mixmonitor->mixmonitor_ds->fs_quit) {
struct ast_frame *fr = NULL;
struct ast_frame *fr_read = NULL;
struct ast_frame *fr_write = NULL;
if (!(fr = ast_audiohook_read_frame_all(&mixmonitor->audiohook, SAMPLES_PER_FRAME, &format_slin,
&fr_read, &fr_write))) {
ast_audiohook_trigger_wait(&mixmonitor->audiohook);
if (mixmonitor->audiohook.status != AST_AUDIOHOOK_STATUS_RUNNING) {
break;
}
continue;
}
/* audiohook lock is not required for the next block.
* Unlock it, but remember to lock it before looping or exiting */
ast_audiohook_unlock(&mixmonitor->audiohook);
if (!ast_test_flag(mixmonitor, MUXFLAG_BRIDGED) || (mixmonitor->autochan->chan && ast_bridged_channel(mixmonitor->autochan->chan))) {
ast_mutex_lock(&mixmonitor->mixmonitor_ds->lock);
/* Write out the frame(s) */
if ((*fs_read) && (fr_read)) {
struct ast_frame *cur;
for (cur = fr_read; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
ast_writestream(*fs_read, cur);
}
}
if ((*fs_write) && (fr_write)) {
struct ast_frame *cur;
for (cur = fr_write; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
ast_writestream(*fs_write, cur);
}
}
if ((*fs) && (fr)) {
struct ast_frame *cur;
for (cur = fr; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
ast_writestream(*fs, cur);
}
}
ast_mutex_unlock(&mixmonitor->mixmonitor_ds->lock);
}
/* All done! free it. */
if (fr) {
ast_frame_free(fr, 0);
}
if (fr_read) {
ast_frame_free(fr_read, 0);
}
if (fr_write) {
ast_frame_free(fr_write, 0);
}
fr = NULL;
fr_write = NULL;
fr_read = NULL;
ast_audiohook_lock(&mixmonitor->audiohook);
}
ast_audiohook_unlock(&mixmonitor->audiohook);
ast_autochan_destroy(mixmonitor->autochan);
/* Datastore cleanup. close the filestream and wait for ds destruction */
ast_mutex_lock(&mixmonitor->mixmonitor_ds->lock);
mixmonitor_ds_close_fs(mixmonitor->mixmonitor_ds);
if (!mixmonitor->mixmonitor_ds->destruction_ok) {
ast_cond_wait(&mixmonitor->mixmonitor_ds->destruction_condition, &mixmonitor->mixmonitor_ds->lock);
}
ast_mutex_unlock(&mixmonitor->mixmonitor_ds->lock);
/* kill the audiohook */
destroy_monitor_audiohook(mixmonitor);
if (mixmonitor->post_process) {
ast_verb(2, "Executing [%s]\n", mixmonitor->post_process);
ast_safe_system(mixmonitor->post_process);
}
ast_verb(2, "End MixMonitor Recording %s\n", mixmonitor->name);
mixmonitor_free(mixmonitor);
return NULL;
}
static int setup_mixmonitor_ds(struct mixmonitor *mixmonitor, struct ast_channel *chan)
{
struct ast_datastore *datastore = NULL;
struct mixmonitor_ds *mixmonitor_ds;
if (!(mixmonitor_ds = ast_calloc(1, sizeof(*mixmonitor_ds)))) {
return -1;
}
ast_mutex_init(&mixmonitor_ds->lock);
ast_cond_init(&mixmonitor_ds->destruction_condition, NULL);
if (!(datastore = ast_datastore_alloc(&mixmonitor_ds_info, NULL))) {
ast_mutex_destroy(&mixmonitor_ds->lock);
ast_cond_destroy(&mixmonitor_ds->destruction_condition);
ast_free(mixmonitor_ds);
return -1;
}
mixmonitor_ds->samp_rate = 8000;
mixmonitor_ds->audiohook = &mixmonitor->audiohook;
datastore->data = mixmonitor_ds;
ast_channel_lock(chan);
ast_channel_datastore_add(chan, datastore);
ast_channel_unlock(chan);
mixmonitor->mixmonitor_ds = mixmonitor_ds;
return 0;
}
static void launch_monitor_thread(struct ast_channel *chan, const char *filename,
unsigned int flags, int readvol, int writevol,
const char *post_process, const char *filename_write,
const char *filename_read)
{
pthread_t thread;
struct mixmonitor *mixmonitor;
char postprocess2[1024] = "";
postprocess2[0] = 0;
/* If a post process system command is given attach it to the structure */
if (!ast_strlen_zero(post_process)) {
char *p1, *p2;
p1 = ast_strdupa(post_process);
for (p2 = p1; *p2; p2++) {
if (*p2 == '^' && *(p2+1) == '{') {
*p2 = '$';
}
}
pbx_substitute_variables_helper(chan, p1, postprocess2, sizeof(postprocess2) - 1);
}
/* Pre-allocate mixmonitor structure and spy */
if (!(mixmonitor = ast_calloc(1, sizeof(*mixmonitor)))) {
return;
}
/* Setup the actual spy before creating our thread */
if (ast_audiohook_init(&mixmonitor->audiohook, AST_AUDIOHOOK_TYPE_SPY, mixmonitor_spy_type, 0)) {
mixmonitor_free(mixmonitor);
return;
}
/* Copy over flags and channel name */
mixmonitor->flags = flags;
if (!(mixmonitor->autochan = ast_autochan_setup(chan))) {
mixmonitor_free(mixmonitor);
return;
}
if (setup_mixmonitor_ds(mixmonitor, chan)) {
ast_autochan_destroy(mixmonitor->autochan);
mixmonitor_free(mixmonitor);
return;
}
mixmonitor->name = ast_strdup(chan->name);
if (!ast_strlen_zero(postprocess2)) {
mixmonitor->post_process = ast_strdup(postprocess2);
}
if (!ast_strlen_zero(filename)) {
mixmonitor->filename = ast_strdup(filename);
}
if (!ast_strlen_zero(filename_write)) {
mixmonitor->filename_write = ast_strdup(filename_write);
}
if (!ast_strlen_zero(filename_read)) {
mixmonitor->filename_read = ast_strdup(filename_read);
}
ast_set_flag(&mixmonitor->audiohook, AST_AUDIOHOOK_TRIGGER_SYNC);
if (readvol)
mixmonitor->audiohook.options.read_volume = readvol;
if (writevol)
mixmonitor->audiohook.options.write_volume = writevol;
if (startmon(chan, &mixmonitor->audiohook)) {
ast_log(LOG_WARNING, "Unable to add '%s' spy to channel '%s'\n",
mixmonitor_spy_type, chan->name);
ast_audiohook_destroy(&mixmonitor->audiohook);
mixmonitor_free(mixmonitor);
return;
}
ast_pthread_create_detached_background(&thread, NULL, mixmonitor_thread, mixmonitor);
}
/* a note on filename_parse: creates directory structure and assigns absolute path from relative paths for filenames */
/* requires immediate copying of string from return to retain data since otherwise it will immediately lose scope */
static char *filename_parse(char *filename, char *buffer, size_t len)
{
char *slash;
if (ast_strlen_zero(filename)) {
ast_log(LOG_WARNING, "No file name was provided for a file save option.\n");
} else if (filename[0] != '/') {
char *build;
build = alloca(strlen(ast_config_AST_MONITOR_DIR) + strlen(filename) + 3);
sprintf(build, "%s/%s", ast_config_AST_MONITOR_DIR, filename);
filename = build;
}
ast_copy_string(buffer, filename, len);
if ((slash = strrchr(filename, '/'))) {
*slash = '\0';
}
ast_mkdir(filename, 0777);
return buffer;
}
static int mixmonitor_exec(struct ast_channel *chan, const char *data)
{
int x, readvol = 0, writevol = 0;
char *filename_read = NULL;
char *filename_write = NULL;
char filename_buffer[1024] = "";
struct ast_flags flags = { 0 };
char *parse;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(filename);
AST_APP_ARG(options);
AST_APP_ARG(post_process);
);
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "MixMonitor requires an argument (filename or ,t(filename) and/or r(filename)\n");
return -1;
}
parse = ast_strdupa(data);
AST_STANDARD_APP_ARGS(args, parse);
if (args.options) {
char *opts[OPT_ARG_ARRAY_SIZE] = { NULL, };
ast_app_parse_options(mixmonitor_opts, &flags, opts, args.options);
if (ast_test_flag(&flags, MUXFLAG_READVOLUME)) {
if (ast_strlen_zero(opts[OPT_ARG_READVOLUME])) {
ast_log(LOG_WARNING, "No volume level was provided for the heard volume ('v') option.\n");
} else if ((sscanf(opts[OPT_ARG_READVOLUME], "%2d", &x) != 1) || (x < -4) || (x > 4)) {
ast_log(LOG_NOTICE, "Heard volume must be a number between -4 and 4, not '%s'\n", opts[OPT_ARG_READVOLUME]);
} else {
readvol = get_volfactor(x);
}
}
if (ast_test_flag(&flags, MUXFLAG_WRITEVOLUME)) {
if (ast_strlen_zero(opts[OPT_ARG_WRITEVOLUME])) {
ast_log(LOG_WARNING, "No volume level was provided for the spoken volume ('V') option.\n");
} else if ((sscanf(opts[OPT_ARG_WRITEVOLUME], "%2d", &x) != 1) || (x < -4) || (x > 4)) {
ast_log(LOG_NOTICE, "Spoken volume must be a number between -4 and 4, not '%s'\n", opts[OPT_ARG_WRITEVOLUME]);
} else {
writevol = get_volfactor(x);
}
}
if (ast_test_flag(&flags, MUXFLAG_VOLUME)) {
if (ast_strlen_zero(opts[OPT_ARG_VOLUME])) {
ast_log(LOG_WARNING, "No volume level was provided for the combined volume ('W') option.\n");
} else if ((sscanf(opts[OPT_ARG_VOLUME], "%2d", &x) != 1) || (x < -4) || (x > 4)) {
ast_log(LOG_NOTICE, "Combined volume must be a number between -4 and 4, not '%s'\n", opts[OPT_ARG_VOLUME]);
} else {
readvol = writevol = get_volfactor(x);
}
}
if (ast_test_flag(&flags, MUXFLAG_WRITE)) {
filename_write = ast_strdupa(filename_parse(opts[OPT_ARG_WRITENAME], filename_buffer, sizeof(filename_buffer)));
}
if (ast_test_flag(&flags, MUXFLAG_READ)) {
filename_read = ast_strdupa(filename_parse(opts[OPT_ARG_READNAME], filename_buffer, sizeof(filename_buffer)));
}
}
/* If there are no file writing arguments/options for the mix monitor, send a warning message and return -1 */
if (!ast_test_flag(&flags, MUXFLAG_WRITE) && !ast_test_flag(&flags, MUXFLAG_READ) && ast_strlen_zero(args.filename)) {
ast_log(LOG_WARNING, "MixMonitor requires an argument (filename)\n");
return -1;
}
/* If filename exists, try to create directories for it */
if (!(ast_strlen_zero(args.filename))) {
args.filename = ast_strdupa(filename_parse(args.filename, filename_buffer, sizeof(filename_buffer)));
}
pbx_builtin_setvar_helper(chan, "MIXMONITOR_FILENAME", args.filename);
launch_monitor_thread(chan, args.filename, flags.flags, readvol, writevol, args.post_process, filename_write, filename_read);
return 0;
}
static int stop_mixmonitor_exec(struct ast_channel *chan, const char *data)
{
struct ast_datastore *datastore = NULL;
ast_channel_lock(chan);
ast_audiohook_detach_source(chan, mixmonitor_spy_type);
if ((datastore = ast_channel_datastore_find(chan, &mixmonitor_ds_info, NULL))) {
struct mixmonitor_ds *mixmonitor_ds = datastore->data;
ast_mutex_lock(&mixmonitor_ds->lock);
/* closing the filestream here guarantees the file is avaliable to the dialplan
* after calling StopMixMonitor */
mixmonitor_ds_close_fs(mixmonitor_ds);
/* The mixmonitor thread may be waiting on the audiohook trigger.
* In order to exit from the mixmonitor loop before waiting on channel
* destruction, poke the audiohook trigger. */
if (mixmonitor_ds->audiohook) {
ast_audiohook_lock(mixmonitor_ds->audiohook);
ast_cond_signal(&mixmonitor_ds->audiohook->trigger);
ast_audiohook_unlock(mixmonitor_ds->audiohook);
mixmonitor_ds->audiohook = NULL;
}
ast_mutex_unlock(&mixmonitor_ds->lock);
/* Remove the datastore so the monitor thread can exit */
if (!ast_channel_datastore_remove(chan, datastore)) {
ast_datastore_free(datastore);
}
}
ast_channel_unlock(chan);
return 0;
}
static char *handle_cli_mixmonitor(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_channel *chan;
switch (cmd) {
case CLI_INIT:
e->command = "mixmonitor {start|stop}";
e->usage =
"Usage: mixmonitor <start|stop> <chan_name> [args]\n"
" The optional arguments are passed to the MixMonitor\n"
" application when the 'start' command is used.\n";
return NULL;
case CLI_GENERATE:
return ast_complete_channels(a->line, a->word, a->pos, a->n, 2);
}
if (a->argc < 3)
return CLI_SHOWUSAGE;
if (!(chan = ast_channel_get_by_name_prefix(a->argv[2], strlen(a->argv[2])))) {
ast_cli(a->fd, "No channel matching '%s' found.\n", a->argv[2]);
/* Technically this is a failure, but we don't want 2 errors printing out */
return CLI_SUCCESS;
}
ast_channel_lock(chan);
if (!strcasecmp(a->argv[1], "start")) {
mixmonitor_exec(chan, a->argv[3]);
ast_channel_unlock(chan);
} else {
ast_channel_unlock(chan);
ast_audiohook_detach_source(chan, mixmonitor_spy_type);
}
chan = ast_channel_unref(chan);
return CLI_SUCCESS;
}
/*! \brief Mute / unmute a MixMonitor channel */
static int manager_mute_mixmonitor(struct mansession *s, const struct message *m)
{
struct ast_channel *c = NULL;
const char *name = astman_get_header(m, "Channel");
const char *id = astman_get_header(m, "ActionID");
const char *state = astman_get_header(m, "State");
const char *direction = astman_get_header(m,"Direction");
int clearmute = 1;
enum ast_audiohook_flags flag;
if (ast_strlen_zero(direction)) {
astman_send_error(s, m, "No direction specified. Must be read, write or both");
return AMI_SUCCESS;
}
if (!strcasecmp(direction, "read")) {
flag = AST_AUDIOHOOK_MUTE_READ;
} else if (!strcasecmp(direction, "write")) {
flag = AST_AUDIOHOOK_MUTE_WRITE;
} else if (!strcasecmp(direction, "both")) {
flag = AST_AUDIOHOOK_MUTE_READ | AST_AUDIOHOOK_MUTE_WRITE;
} else {
astman_send_error(s, m, "Invalid direction specified. Must be read, write or both");
return AMI_SUCCESS;
}
if (ast_strlen_zero(name)) {
astman_send_error(s, m, "No channel specified");
return AMI_SUCCESS;
}
if (ast_strlen_zero(state)) {
astman_send_error(s, m, "No state specified");
return AMI_SUCCESS;
}
clearmute = ast_false(state);
c = ast_channel_get_by_name(name);
if (!c) {
astman_send_error(s, m, "No such channel");
return AMI_SUCCESS;
}
if (ast_audiohook_set_mute(c, mixmonitor_spy_type, flag, clearmute)) {
c = ast_channel_unref(c);
astman_send_error(s, m, "Cannot set mute flag");
return AMI_SUCCESS;
}
astman_append(s, "Response: Success\r\n");
if (!ast_strlen_zero(id)) {
astman_append(s, "ActionID: %s\r\n", id);
}
astman_append(s, "\r\n");
c = ast_channel_unref(c);
return AMI_SUCCESS;
}
static struct ast_cli_entry cli_mixmonitor[] = {
AST_CLI_DEFINE(handle_cli_mixmonitor, "Execute a MixMonitor command")
};
static int unload_module(void)
{
int res;
ast_cli_unregister_multiple(cli_mixmonitor, ARRAY_LEN(cli_mixmonitor));
res = ast_unregister_application(stop_app);
res |= ast_unregister_application(app);
res |= ast_manager_unregister("MixMonitorMute");
return res;
}
static int load_module(void)
{
int res;
ast_cli_register_multiple(cli_mixmonitor, ARRAY_LEN(cli_mixmonitor));
res = ast_register_application_xml(app, mixmonitor_exec);
res |= ast_register_application_xml(stop_app, stop_mixmonitor_exec);
res |= ast_manager_register_xml("MixMonitorMute", 0, manager_mute_mixmonitor);
return res;
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Mixed Audio Monitoring Application");
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