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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 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 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>
#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"
static struct pa_mainloop *mainloop;
static void drop_root(void) {
if (getuid() != 0 && geteuid() == 0) {
fprintf(stderr, __FILE__": started SUID root, dropping root rights.\n");
setuid(getuid());
seteuid(getuid());
}
}
static void exit_signal_callback(struct pa_mainloop_api*m, struct pa_signal_event *e, int sig, void *userdata) {
m->quit(m, 1);
fprintf(stderr, __FILE__": got signal.\n");
}
static void aux_signal_callback(struct pa_mainloop_api*m, struct pa_signal_event *e, int sig, void *userdata) {
struct pa_core *c = userdata;
assert(c);
pa_module_load(c, sig == SIGUSR1 ? "module-cli" : "module-cli-protocol-unix", NULL);
}
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_cmdline *cmdline = NULL;
struct pa_strbuf *buf = NULL;
char *s;
int r, retval = 1;
int daemon_pipe[2] = { -1, -1 };
if (!(cmdline = pa_cmdline_parse(argc, argv))) {
fprintf(stderr, __FILE__": failed to parse command line.\n");
goto finish;
}
if (cmdline->help) {
pa_cmdline_help(argv[0]);
retval = 0;
goto finish;
}
if (cmdline->version) {
printf(PACKAGE_NAME" "PACKAGE_VERSION"\n");
retval = 0;
goto finish;
}
if (cmdline->high_priority)
pa_raise_priority();
if (!cmdline->stay_root)
drop_root();
if (cmdline->daemonize) {
pid_t child;
if (pa_stdio_acquire() < 0) {
fprintf(stderr, __FILE__": failed to acquire stdio.\n");
goto finish;
}
if (pipe(daemon_pipe) < 0) {
fprintf(stderr, __FILE__": failed to create pipe.\n");
goto finish;
}
if ((child = fork()) < 0) {
fprintf(stderr, __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)) {
fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
retval = 1;
}
goto finish;
}
close(daemon_pipe[0]);
daemon_pipe[0] = -1;
setsid();
setpgrp();
}
r = lt_dlinit();
assert(r == 0);
#ifdef DLSEARCHDIR
lt_dladdsearchdir(DLSEARCHDIR);
#endif
mainloop = pa_mainloop_new();
assert(mainloop);
r = pa_signal_init(pa_mainloop_get_api(mainloop));
assert(r == 0);
pa_signal_new(SIGINT, exit_signal_callback, NULL);
signal(SIGPIPE, SIG_IGN);
c = pa_core_new(pa_mainloop_get_api(mainloop));
assert(c);
pa_signal_new(SIGUSR1, aux_signal_callback, c);
pa_signal_new(SIGUSR2, aux_signal_callback, c);
buf = pa_strbuf_new();
assert(buf);
r = pa_cli_command_execute(c, cmdline->cli_commands, buf, &cmdline->fail, &cmdline->verbose);
fprintf(stderr, s = pa_strbuf_tostring_free(buf));
pa_xfree(s);
if (r < 0 && cmdline->fail) {
fprintf(stderr, __FILE__": failed to initialize daemon.\n");
if (cmdline->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
} else if (!c->modules || pa_idxset_ncontents(c->modules) == 0) {
fprintf(stderr, __FILE__": daemon startup without any loaded modules, refusing to work.\n");
if (cmdline->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
} else {
retval = 0;
if (cmdline->daemonize)
pa_loop_write(daemon_pipe[1], &retval, sizeof(retval));
fprintf(stderr, __FILE__": mainloop entry.\n");
if (pa_mainloop_run(mainloop, &retval) < 0)
retval = 1;
fprintf(stderr, __FILE__": mainloop exit.\n");
}
pa_core_free(c);
pa_signal_done();
pa_mainloop_free(mainloop);
lt_dlexit();
finish:
if (cmdline)
pa_cmdline_free(cmdline);
close_pipe(daemon_pipe);
return retval;
}
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