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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Stream to an icecast server via ICES (see contrib/asterisk-ices.xml)
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <asterisk/lock.h>
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/channel.h>
#include <asterisk/frame.h>
#include <asterisk/pbx.h>
#include <asterisk/module.h>
#include <asterisk/translate.h>
#include <string.h>
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <errno.h>
#include "../astconf.h"
#define ICES "/usr/bin/ices"
#define LOCAL_ICES "/usr/local/bin/ices"
static char *tdesc = "Encode and Stream via icecast and ices";
static char *app = "ICES";
static char *synopsis = "Encode and stream using 'ices'";
static char *descrip =
" ICES(config.xml) Streams to an icecast server using ices\n"
"(available separately). A configuration file must be supplied\n"
"for ices (see examples/asterisk-ices.conf). Returns -1 on\n"
"hangup or 0 otherwise.\n";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int icesencode(char *filename, int fd)
{
int res;
int x;
res = fork();
if (res < 0)
ast_log(LOG_WARNING, "Fork failed\n");
if (res)
return res;
dup2(fd, STDIN_FILENO);
for (x=STDERR_FILENO + 1;x<256;x++) {
if ((x != STDIN_FILENO) && (x != STDOUT_FILENO))
close(x);
}
/* Most commonly installed in /usr/local/bin */
execl(ICES, "ices", filename, (char *)NULL);
/* But many places has it in /usr/bin */
execl(LOCAL_ICES, "ices", filename, (char *)NULL);
/* As a last-ditch effort, try to use PATH */
execlp("ices", "ices", filename, (char *)NULL);
ast_log(LOG_WARNING, "Execute of ices failed\n");
return -1;
}
static int ices_exec(struct ast_channel *chan, void *data)
{
int res=0;
struct localuser *u;
int fds[2];
int ms = -1;
int pid = -1;
int flags;
int oreadformat;
struct timeval last;
struct ast_frame *f;
char filename[256]="";
char *c;
last.tv_usec = 0;
last.tv_sec = 0;
if (!data || !strlen(data)) {
ast_log(LOG_WARNING, "ICES requires an argument (configfile.xml)\n");
return -1;
}
if (pipe(fds)) {
ast_log(LOG_WARNING, "Unable to create pipe\n");
return -1;
}
flags = fcntl(fds[1], F_GETFL);
fcntl(fds[1], F_SETFL, flags | O_NONBLOCK);
LOCAL_USER_ADD(u);
ast_stopstream(chan);
if (chan->_state != AST_STATE_UP)
res = ast_answer(chan);
if (res) {
close(fds[0]);
close(fds[1]);
ast_log(LOG_WARNING, "Answer failed!\n");
return -1;
}
oreadformat = chan->readformat;
res = ast_set_read_format(chan, AST_FORMAT_SLINEAR);
if (res < 0) {
close(fds[0]);
close(fds[1]);
ast_log(LOG_WARNING, "Unable to set write format to signed linear\n");
return -1;
}
if (((char *)data)[0] == '/')
strncpy(filename, (char *)data, sizeof(filename) - 1);
else
snprintf(filename, sizeof(filename), "%s/%s", (char *)ast_config_AST_CONFIG_DIR, (char *)data);
/* Placeholder for options */
c = strchr(filename, '|');
if (c)
*c = '\0';
res = icesencode(filename, fds[0]);
close(fds[0]);
if (res >= 0) {
pid = res;
for (;;) {
/* Wait for audio, and stream */
ms = ast_waitfor(chan, -1);
if (ms < 0) {
ast_log(LOG_DEBUG, "Hangup detected\n");
res = -1;
break;
}
f = ast_read(chan);
if (!f) {
ast_log(LOG_DEBUG, "Null frame == hangup() detected\n");
res = -1;
break;
}
if (f->frametype == AST_FRAME_VOICE) {
res = write(fds[1], f->data, f->datalen);
if (res < 0) {
if (errno != EAGAIN) {
ast_log(LOG_WARNING, "Write failed to pipe: %s\n", strerror(errno));
res = -1;
break;
}
}
}
ast_frfree(f);
}
}
close(fds[1]);
LOCAL_USER_REMOVE(u);
if (pid > -1)
kill(pid, SIGKILL);
if (!res && oreadformat)
ast_set_read_format(chan, oreadformat);
return res;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
return ast_unregister_application(app);
}
int load_module(void)
{
return ast_register_application(app, ices_exec, synopsis, descrip);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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