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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6803 65c4cc65-6c06-0410-ace0-fbb531ad65f3
526 lines
12 KiB
C
Executable File
526 lines
12 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* muxmon Application For Asterisk
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*
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* Copyright (C) 2005, Anthony Minessale II
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*
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* Anthony Minessale II <anthmct@yahoo.com>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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#include <asterisk/file.h>
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#include <asterisk/logger.h>
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#include <asterisk/channel.h>
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#include <asterisk/pbx.h>
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#include <asterisk/module.h>
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#include <asterisk/lock.h>
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#include <asterisk/cli.h>
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#include <asterisk/options.h>
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#include <asterisk/app.h>
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#include <asterisk/translate.h>
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#include <asterisk/slinfactory.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#define get_volfactor(x) x ? ((x > 0) ? (1 << x) : ((1 << abs(x)) * -1)) : 0
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#define minmax(x,y) x ? (x > y) ? y : ((x < (y * -1)) ? (y * -1) : x) : 0
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static char *tdesc = "Native Channel Monitoring Module";
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static char *app = "MuxMon";
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static char *synopsis = "Record A Call Natively";
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static char *desc = ""
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" MuxMon(<file>.<ext>[|<options>[|<command>]])\n\n"
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"Records The audio on the current channel to the specified file.\n\n"
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"Valid Options:\n"
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" b - Only save audio to the file while the channel is bridged. Note: does\n"
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" not include conferences\n"
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" a - Append to the file instead of overwriting it.\n"
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" v(<x>) - Adjust the heard volume by a factor of <x> (range -4 to 4)\n"
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" V(<x>) - Adjust the spoken volume by a factor of <x> (range -4 to 4)\n"
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" W(<x>) - Adjust the both heard and spoken volumes by a factor of <x>\n"
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" (range -4 to 4)\n\n"
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"<command> will be executed when the recording is over\n"
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"Any strings matching ^{X} will be unescaped to ${X} and \n"
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"all variables will be evaluated at that time.\n"
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"The variable MUXMON_FILENAME will contain the filename used to record.\n"
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"";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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struct muxmon {
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struct ast_channel *chan;
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char *filename;
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char *post_process;
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unsigned int flags;
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int readvol;
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int writevol;
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};
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typedef enum {
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MUXFLAG_RUNNING = (1 << 0),
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MUXFLAG_APPEND = (1 << 1),
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MUXFLAG_BRIDGED = (1 << 2),
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MUXFLAG_VOLUME = (1 << 3),
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MUXFLAG_READVOLUME = (1 << 4),
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MUXFLAG_WRITEVOLUME = (1 << 5)
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} muxflags;
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AST_DECLARE_OPTIONS(muxmon_opts,{
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['a'] = { MUXFLAG_APPEND },
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['b'] = { MUXFLAG_BRIDGED },
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['v'] = { MUXFLAG_READVOLUME, 1 },
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['V'] = { MUXFLAG_WRITEVOLUME, 2 },
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['W'] = { MUXFLAG_VOLUME, 3 },
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});
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static void stopmon(struct ast_channel *chan, struct ast_channel_spy *spy)
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{
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struct ast_channel_spy *cptr=NULL, *prev=NULL;
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int count = 0;
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if (chan) {
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while(ast_mutex_trylock(&chan->lock)) {
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if (chan->spiers == spy) {
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chan->spiers = NULL;
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return;
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}
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count++;
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if (count > 10) {
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return;
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}
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sched_yield();
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}
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for(cptr=chan->spiers; cptr; cptr=cptr->next) {
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if (cptr == spy) {
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if (prev) {
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prev->next = cptr->next;
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cptr->next = NULL;
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} else
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chan->spiers = NULL;
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}
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prev = cptr;
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}
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ast_mutex_unlock(&chan->lock);
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}
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}
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static void startmon(struct ast_channel *chan, struct ast_channel_spy *spy)
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{
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struct ast_channel_spy *cptr=NULL;
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struct ast_channel *peer;
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if (chan) {
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ast_mutex_lock(&chan->lock);
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if (chan->spiers) {
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for(cptr=chan->spiers;cptr->next;cptr=cptr->next);
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cptr->next = spy;
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} else {
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chan->spiers = spy;
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}
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ast_mutex_unlock(&chan->lock);
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if (ast_test_flag(chan, AST_FLAG_NBRIDGE) && (peer = ast_bridged_channel(chan))) {
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ast_softhangup(peer, AST_SOFTHANGUP_UNBRIDGE);
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}
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}
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}
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static int spy_queue_translate(struct ast_channel_spy *spy,
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struct ast_slinfactory *slinfactory0,
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struct ast_slinfactory *slinfactory1)
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{
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int res = 0;
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struct ast_frame *f;
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ast_mutex_lock(&spy->lock);
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while((f = spy->queue[0])) {
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spy->queue[0] = f->next;
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ast_slinfactory_feed(slinfactory0, f);
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ast_frfree(f);
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}
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ast_mutex_unlock(&spy->lock);
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ast_mutex_lock(&spy->lock);
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while((f = spy->queue[1])) {
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spy->queue[1] = f->next;
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ast_slinfactory_feed(slinfactory1, f);
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ast_frfree(f);
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}
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ast_mutex_unlock(&spy->lock);
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return res;
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}
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static void *muxmon_thread(void *obj)
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{
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int len0 = 0, len1 = 0, samp0 = 0, samp1 = 0, framelen, maxsamp = 0, x = 0;
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short buf0[1280], buf1[1280], buf[1280];
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struct ast_frame frame;
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struct muxmon *muxmon = obj;
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struct ast_channel_spy spy;
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struct ast_filestream *fs = NULL;
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char *ext, *name;
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unsigned int oflags;
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struct ast_slinfactory slinfactory[2];
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char post_process[1024] = "";
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name = ast_strdupa(muxmon->chan->name);
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framelen = 320;
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frame.frametype = AST_FRAME_VOICE;
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frame.subclass = AST_FORMAT_SLINEAR;
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frame.data = buf;
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ast_set_flag(muxmon, MUXFLAG_RUNNING);
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oflags = O_CREAT|O_WRONLY;
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ast_slinfactory_init(&slinfactory[0]);
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ast_slinfactory_init(&slinfactory[1]);
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/* for efficiency, use a flag to bypass volume logic when it's not needed */
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if (muxmon->readvol || muxmon->writevol) {
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ast_set_flag(muxmon, MUXFLAG_VOLUME);
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}
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if ((ext = strchr(muxmon->filename, '.'))) {
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*(ext++) = '\0';
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} else {
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ext = "raw";
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}
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memset(&spy, 0, sizeof(spy));
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spy.status = CHANSPY_RUNNING;
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ast_mutex_init(&spy.lock);
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startmon(muxmon->chan, &spy);
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if (ast_test_flag(muxmon, MUXFLAG_RUNNING)) {
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if (option_verbose > 1) {
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ast_verbose(VERBOSE_PREFIX_2 "Begin Muxmon Recording %s\n", name);
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}
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oflags |= ast_test_flag(muxmon, MUXFLAG_APPEND) ? O_APPEND : O_TRUNC;
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if (!(fs = ast_writefile(muxmon->filename, ext, NULL, oflags, 0, 0644))) {
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ast_log(LOG_ERROR, "Cannot open %s\n", muxmon->filename);
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spy.status = CHANSPY_DONE;
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} else {
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if (ast_test_flag(muxmon, MUXFLAG_APPEND)) {
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ast_seekstream(fs, 0, SEEK_END);
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}
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while (ast_test_flag(muxmon, MUXFLAG_RUNNING)) {
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samp0 = samp1 = len0 = len1 = 0;
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if (ast_check_hangup(muxmon->chan) || spy.status != CHANSPY_RUNNING) {
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ast_clear_flag(muxmon, MUXFLAG_RUNNING);
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break;
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}
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if (ast_test_flag(muxmon, MUXFLAG_BRIDGED) && !ast_bridged_channel(muxmon->chan)) {
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usleep(1000);
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sched_yield();
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continue;
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}
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spy_queue_translate(&spy, &slinfactory[0], &slinfactory[1]);
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if (slinfactory[0].size < framelen || slinfactory[1].size < framelen) {
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usleep(1000);
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sched_yield();
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continue;
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}
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if ((len0 = ast_slinfactory_read(&slinfactory[0], buf0, framelen))) {
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samp0 = len0 / 2;
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}
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if((len1 = ast_slinfactory_read(&slinfactory[1], buf1, framelen))) {
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samp1 = len1 / 2;
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}
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if (ast_test_flag(muxmon, MUXFLAG_VOLUME)) {
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if (samp0 && muxmon->readvol > 0) {
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for(x=0; x < samp0 / 2; x++) {
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buf0[x] *= muxmon->readvol;
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}
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} else if (samp0 && muxmon->readvol < 0) {
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for(x=0; x < samp0 / 2; x++) {
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buf0[x] /= muxmon->readvol;
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}
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}
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if (samp1 && muxmon->writevol > 0) {
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for(x=0; x < samp1 / 2; x++) {
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buf1[x] *= muxmon->writevol;
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}
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} else if (muxmon->writevol < 0) {
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for(x=0; x < samp1 / 2; x++) {
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buf1[x] /= muxmon->writevol;
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}
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}
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}
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maxsamp = (samp0 > samp1) ? samp0 : samp1;
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if (samp0 && samp1) {
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for(x=0; x < maxsamp; x++) {
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if (x < samp0 && x < samp1) {
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buf[x] = buf0[x] + buf1[x];
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} else if (x < samp0) {
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buf[x] = buf0[x];
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} else if (x < samp1) {
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buf[x] = buf1[x];
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}
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}
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} else if(samp0) {
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memcpy(buf, buf0, len0);
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x = samp0;
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} else if(samp1) {
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memcpy(buf, buf1, len1);
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x = samp1;
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}
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frame.samples = x;
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frame.datalen = x * 2;
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ast_writestream(fs, &frame);
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usleep(1000);
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sched_yield();
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}
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}
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}
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if (muxmon->post_process) {
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char *p;
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for(p = muxmon->post_process; *p ; p++) {
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if (*p == '^' && *(p+1) == '{') {
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*p = '$';
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}
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}
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pbx_substitute_variables_helper(muxmon->chan, muxmon->post_process, post_process, sizeof(post_process) - 1);
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free(muxmon->post_process);
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muxmon->post_process = NULL;
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}
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stopmon(muxmon->chan, &spy);
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if (option_verbose > 1) {
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ast_verbose(VERBOSE_PREFIX_2 "Finished Recording %s\n", name);
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}
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ast_mutex_destroy(&spy.lock);
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if(fs) {
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ast_closestream(fs);
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}
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ast_slinfactory_destroy(&slinfactory[0]);
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ast_slinfactory_destroy(&slinfactory[1]);
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if (muxmon) {
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if (muxmon->filename) {
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free(muxmon->filename);
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}
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free(muxmon);
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}
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if (!ast_strlen_zero(post_process)) {
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if (option_verbose > 2) {
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ast_verbose(VERBOSE_PREFIX_2 "Executing [%s]\n", post_process);
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}
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ast_safe_system(post_process);
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}
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return NULL;
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}
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static void launch_monitor_thread(struct ast_channel *chan, char *filename, unsigned int flags, int readvol , int writevol, char *post_process)
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{
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pthread_attr_t attr;
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int result = 0;
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pthread_t thread;
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struct muxmon *muxmon;
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if (!(muxmon = malloc(sizeof(struct muxmon)))) {
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ast_log(LOG_ERROR, "Memory Error!\n");
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return;
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}
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memset(muxmon, 0, sizeof(struct muxmon));
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muxmon->chan = chan;
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muxmon->filename = strdup(filename);
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if(post_process) {
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muxmon->post_process = strdup(post_process);
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}
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muxmon->readvol = readvol;
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muxmon->writevol = writevol;
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muxmon->flags = flags;
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result = pthread_attr_init(&attr);
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pthread_attr_setschedpolicy(&attr, SCHED_RR);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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result = ast_pthread_create(&thread, &attr, muxmon_thread, muxmon);
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result = pthread_attr_destroy(&attr);
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}
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static int muxmon_exec(struct ast_channel *chan, void *data)
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{
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int res = 0, x = 0, readvol = 0, writevol = 0;
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struct localuser *u;
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struct ast_flags flags = {0};
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int argc;
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char *options = NULL,
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*args,
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*argv[3],
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*filename = NULL,
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*post_process = NULL;
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if (!data) {
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ast_log(LOG_WARNING, "muxmon requires an argument\n");
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return -1;
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}
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if (!(args = ast_strdupa(data))) {
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ast_log(LOG_WARNING, "Memory Error!\n");
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return -1;
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}
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if ((argc = ast_separate_app_args(args, '|', argv, sizeof(argv) / sizeof(argv[0])))) {
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filename = argv[0];
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if ( argc > 1) {
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options = argv[1];
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}
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if ( argc > 2) {
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post_process = argv[2];
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}
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}
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if (!filename || ast_strlen_zero(filename)) {
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ast_log(LOG_WARNING, "Muxmon requires an argument (filename)\n");
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return -1;
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}
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LOCAL_USER_ADD(u);
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if (options) {
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char *opts[3] = {};
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ast_parseoptions(muxmon_opts, &flags, opts, options);
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if (ast_test_flag(&flags, MUXFLAG_READVOLUME) && opts[0]) {
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if (sscanf(opts[0], "%d", &x) != 1)
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ast_log(LOG_NOTICE, "volume must be a number between -4 and 4\n");
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else {
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readvol = minmax(x, 4);
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x = get_volfactor(readvol);
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readvol = minmax(x, 16);
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}
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}
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if (ast_test_flag(&flags, MUXFLAG_WRITEVOLUME) && opts[1]) {
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if (sscanf(opts[1], "%d", &x) != 1)
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ast_log(LOG_NOTICE, "volume must be a number between -4 and 4\n");
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else {
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writevol = minmax(x, 4);
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x = get_volfactor(writevol);
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writevol = minmax(x, 16);
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}
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}
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if (ast_test_flag(&flags, MUXFLAG_VOLUME) && opts[2]) {
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if (sscanf(opts[2], "%d", &x) != 1)
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ast_log(LOG_NOTICE, "volume must be a number between -4 and 4\n");
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else {
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readvol = writevol = minmax(x, 4);
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x = get_volfactor(readvol);
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readvol = minmax(x, 16);
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x = get_volfactor(writevol);
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writevol = minmax(x, 16);
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}
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}
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}
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pbx_builtin_setvar_helper(chan, "MUXMON_FILENAME", filename);
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launch_monitor_thread(chan, filename, flags.flags, readvol, writevol, post_process);
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LOCAL_USER_REMOVE(u);
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return res;
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}
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static int muxmon_cli(int fd, int argc, char **argv)
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{
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char *op, *chan_name = NULL, *args = NULL;
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struct ast_channel *chan;
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if (argc > 2) {
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op = argv[1];
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chan_name = argv[2];
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if (argv[3]) {
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args = argv[3];
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}
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if (!(chan = ast_get_channel_by_name_prefix_locked(chan_name, strlen(chan_name)))) {
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ast_cli(fd, "Invalid Channel!\n");
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return -1;
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}
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if (!strcasecmp(op, "start")) {
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muxmon_exec(chan, args);
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} else if (!strcasecmp(op, "stop")) {
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struct ast_channel_spy *cptr=NULL;
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for(cptr=chan->spiers; cptr; cptr=cptr->next) {
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cptr->status = CHANSPY_DONE;
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}
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}
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ast_mutex_unlock(&chan->lock);
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return 0;
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}
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ast_cli(fd, "Usage: muxmon <start|stop> <chan_name> <args>\n");
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return -1;
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}
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static struct ast_cli_entry cli_muxmon = {
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{ "muxmon", NULL, NULL }, muxmon_cli,
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"Execute a monitor command", "muxmon <start|stop> <chan_name> <args>"};
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int unload_module(void)
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{
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STANDARD_HANGUP_LOCALUSERS;
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ast_cli_unregister(&cli_muxmon);
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return ast_unregister_application(app);
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}
|
|
|
|
int load_module(void)
|
|
{
|
|
ast_cli_register(&cli_muxmon);
|
|
return ast_register_application(app, muxmon_exec, synopsis, desc);
|
|
}
|
|
|
|
char *description(void)
|
|
{
|
|
return tdesc;
|
|
}
|
|
|
|
int usecount(void)
|
|
{
|
|
int res;
|
|
STANDARD_USECOUNT(res);
|
|
return res;
|
|
}
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|
|
|