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pulseaudio/polyp/main.c
Lennart Poettering fa499dad06 Make the whole stuff LGPL only 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@284 fefdeb5f-60dc-0310-8127-8f9354f1896f
2004-11-14 14:58:54 +00:00

340 lines
9 KiB
C
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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <stddef.h>
#include <assert.h>
#include <ltdl.h>
#include <memblock.h>
#ifdef HAVE_LIBWRAP
#include <syslog.h>
#include <tcpd.h>
#endif
#include "core.h"
#include "mainloop.h"
#include "module.h"
#include "mainloop-signal.h"
#include "cmdline.h"
#include "cli-command.h"
#include "util.h"
#include "sioman.h"
#include "xmalloc.h"
#include "cpulimit.h"
#include "log.h"
#include "daemon-conf.h"
#include "dumpmodules.h"
#include "caps.h"
#include "cli-text.h"
#ifdef HAVE_LIBWRAP
/* Only one instance of these variables */
int allow_severity = LOG_INFO;
int deny_severity = LOG_WARNING;
#endif
static void signal_callback(struct pa_mainloop_api*m, struct pa_signal_event *e, int sig, void *userdata) {
pa_log(__FILE__": Got signal %s.\n", pa_strsignal(sig));
switch (sig) {
case SIGUSR1:
pa_module_load(userdata, "module-cli", NULL);
return;
case SIGUSR2:
pa_module_load(userdata, "module-cli-protocol-unix", NULL);
return;
case SIGHUP: {
int i;
for (i = 0;; i++) {
char *c;
switch (i) {
case 0:
c = pa_sink_list_to_string(userdata);
break;
case 1:
c = pa_source_list_to_string(userdata);
break;
case 2:
c = pa_sink_input_list_to_string(userdata);
break;
case 3:
c = pa_source_output_list_to_string(userdata);
break;
case 4:
c = pa_client_list_to_string(userdata);
break;
case 5:
c = pa_module_list_to_string(userdata);
break;
case 6:
c = pa_scache_list_to_string(userdata);
break;
case 7:
c = pa_autoload_list_to_string(userdata);
break;
default:
return;
}
pa_log(c);
pa_xfree(c);
}
return;
}
case SIGINT:
case SIGTERM:
default:
pa_log(__FILE__": Exiting.\n");
m->quit(m, 1);
return;
}
}
static void close_pipe(int p[2]) {
if (p[0] != -1)
close(p[0]);
if (p[1] != -1)
close(p[1]);
p[0] = p[1] = -1;
}
int main(int argc, char *argv[]) {
struct pa_core *c;
struct pa_strbuf *buf = NULL;
struct pa_daemon_conf *conf;
struct pa_mainloop *mainloop;
char *s;
int r, retval = 1, d = 0;
int daemon_pipe[2] = { -1, -1 };
gid_t gid = (gid_t) -1;
int suid_root;
pa_limit_caps();
suid_root = getuid() != 0 && geteuid() == 0;
if (suid_root && (pa_uid_in_group("realtime", &gid) <= 0 || gid >= 1000)) {
pa_log(__FILE__": WARNING: called SUID root, but not in group 'realtime'.\n");
pa_drop_root();
}
LTDL_SET_PRELOADED_SYMBOLS();
r = lt_dlinit();
assert(r == 0);
pa_log_set_ident("polypaudio");
conf = pa_daemon_conf_new();
if (pa_daemon_conf_load(conf, NULL) < 0)
goto finish;
if (pa_daemon_conf_env(conf) < 0)
goto finish;
if (pa_cmdline_parse(conf, argc, argv, &d) < 0) {
pa_log(__FILE__": failed to parse command line.\n");
goto finish;
}
pa_log_set_target(conf->auto_log_target ? PA_LOG_STDERR : conf->log_target, NULL);
if (conf->high_priority && conf->cmd == PA_CMD_DAEMON)
pa_raise_priority();
pa_drop_caps();
if (suid_root)
pa_drop_root();
if (conf->dl_search_path)
lt_dlsetsearchpath(conf->dl_search_path);
switch (conf->cmd) {
case PA_CMD_DUMP_MODULES:
pa_dump_modules(conf, argc-d, argv+d);
retval = 0;
goto finish;
case PA_CMD_DUMP_CONF: {
char *s = pa_daemon_conf_dump(conf);
fputs(s, stdout);
pa_xfree(s);
retval = 0;
goto finish;
}
case PA_CMD_HELP :
pa_cmdline_help(argv[0]);
retval = 0;
goto finish;
case PA_CMD_VERSION :
printf(PACKAGE_NAME" "PACKAGE_VERSION"\n");
retval = 0;
goto finish;
default:
assert(conf->cmd == PA_CMD_DAEMON);
}
if (conf->daemonize) {
pid_t child;
if (pa_stdio_acquire() < 0) {
pa_log(__FILE__": failed to acquire stdio.\n");
goto finish;
}
if (pipe(daemon_pipe) < 0) {
pa_log(__FILE__": failed to create pipe.\n");
goto finish;
}
if ((child = fork()) < 0) {
pa_log(__FILE__": fork() failed: %s\n", strerror(errno));
goto finish;
}
if (child != 0) {
/* Father */
close(daemon_pipe[1]);
daemon_pipe[1] = -1;
if (pa_loop_read(daemon_pipe[0], &retval, sizeof(retval)) != sizeof(retval)) {
pa_log(__FILE__": read() failed: %s\n", strerror(errno));
retval = 1;
}
if (conf->verbose)
pa_log(__FILE__": daemon startup %s.\n", retval ? "failed" : "succeeded");
goto finish;
}
close(daemon_pipe[0]);
daemon_pipe[0] = -1;
if (conf->auto_log_target)
pa_log_set_target(PA_LOG_SYSLOG, NULL);
setsid();
setpgid(0,0);
close(0);
close(1);
}
chdir("/");
pa_log(__FILE__": sizeof(pa_usec_t) = %u\n", sizeof(pa_usec_t));
mainloop = pa_mainloop_new();
assert(mainloop);
r = pa_signal_init(pa_mainloop_get_api(mainloop));
assert(r == 0);
pa_signal_new(SIGINT, signal_callback, c);
pa_signal_new(SIGTERM, signal_callback, c);
signal(SIGPIPE, SIG_IGN);
c = pa_core_new(pa_mainloop_get_api(mainloop));
assert(c);
pa_signal_new(SIGUSR1, signal_callback, c);
pa_signal_new(SIGUSR2, signal_callback, c);
pa_signal_new(SIGHUP, signal_callback, c);
r = pa_cpu_limit_init(pa_mainloop_get_api(mainloop));
assert(r == 0);
buf = pa_strbuf_new();
assert(buf);
if (conf->default_script_file)
r = pa_cli_command_execute_file(c, conf->default_script_file, buf, &conf->fail, &conf->verbose);
if (r >= 0)
r = pa_cli_command_execute(c, conf->script_commands, buf, &conf->fail, &conf->verbose);
pa_log(s = pa_strbuf_tostring_free(buf));
pa_xfree(s);
if (r < 0 && conf->fail) {
pa_log(__FILE__": failed to initialize daemon.\n");
if (conf->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
} else if (!c->modules || pa_idxset_ncontents(c->modules) == 0) {
pa_log(__FILE__": daemon startup without any loaded modules, refusing to work.\n");
if (conf->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
} else {
retval = 0;
if (conf->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
c->disallow_module_loading = conf->disallow_module_loading;
c->exit_idle_time = conf->exit_idle_time;
c->module_idle_time = conf->module_idle_time;
c->scache_idle_time = conf->scache_idle_time;
c->resample_method = conf->resample_method;
pa_log(__FILE__": Daemon startup complete.\n");
if (pa_mainloop_run(mainloop, &retval) < 0)
retval = 1;
pa_log(__FILE__": Daemon shutdown initiated.\n");
}
pa_core_free(c);
pa_cpu_limit_done();
pa_signal_done();
pa_mainloop_free(mainloop);
pa_log(__FILE__": Daemon terminated.\n");
finish:
if (conf)
pa_daemon_conf_free(conf);
close_pipe(daemon_pipe);
lt_dlexit();
return retval;
}
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