d70c2e2285
The logging library currently has 3 constructor functions: initLog(), open_log_files(), setup_log_output(), called in this order. Merged the first two.
389 lines
8.3 KiB
C
389 lines
8.3 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "client.h"
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#include "idle.h"
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#include "command.h"
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#include "playlist.h"
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#include "database.h"
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#include "update.h"
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#include "player_thread.h"
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#include "listen.h"
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#include "cmdline.h"
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#include "conf.h"
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#include "path.h"
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#include "mapper.h"
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#include "playerData.h"
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#include "pipe.h"
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#include "decoder_thread.h"
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#include "decoder_control.h"
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#include "player_control.h"
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#include "stats.h"
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#include "sig_handlers.h"
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#include "audio.h"
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#include "volume.h"
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#include "log.h"
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#include "permission.h"
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#include "replay_gain.h"
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#include "decoder_list.h"
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#include "input_stream.h"
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#include "state_file.h"
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#include "tag.h"
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#include "dbUtils.h"
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#include "../config.h"
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#include "normalize.h"
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#include "zeroconf.h"
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#include "main_notify.h"
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#include "os_compat.h"
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#ifdef ENABLE_ARCHIVE
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#include "archive_list.h"
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#endif
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#include <glib.h>
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#ifdef HAVE_LOCALE
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#include <locale.h>
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#endif
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/*
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* from git-1.3.0, needed for solaris
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*/
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#ifndef HAVE_SETENV
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static int setenv(const char *name, const char *value, int replace)
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{
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int out;
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size_t namelen, valuelen;
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char *envstr;
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if (!name || !value)
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return -1;
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if (!replace) {
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char *oldval = NULL;
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oldval = getenv(name);
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if (oldval)
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return 0;
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}
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namelen = strlen(name);
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valuelen = strlen(value);
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envstr = xmalloc((namelen + valuelen + 2));
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if (!envstr)
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return -1;
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memcpy(envstr, name, namelen);
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envstr[namelen] = '=';
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memcpy(envstr + namelen + 1, value, valuelen);
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envstr[namelen + valuelen + 1] = 0;
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out = putenv(envstr);
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/* putenv(3) makes the argument string part of the environment,
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* and changing that string modifies the environment --- which
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* means we do not own that storage anymore. Do not free
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* envstr.
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*/
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return out;
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}
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#endif /* HAVE_SETENV */
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static void changeToUser(void)
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{
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ConfigParam *param = getConfigParam(CONF_USER);
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if (param && strlen(param->value)) {
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/* get uid */
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struct passwd *userpwd;
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if ((userpwd = getpwnam(param->value)) == NULL) {
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FATAL("no such user \"%s\" at line %i\n", param->value,
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param->line);
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}
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if (setgid(userpwd->pw_gid) == -1) {
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FATAL("cannot setgid for user \"%s\" at line %i: %s\n",
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param->value, param->line, strerror(errno));
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}
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#ifdef _BSD_SOURCE
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/* init suplementary groups
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* (must be done before we change our uid)
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*/
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if (initgroups(param->value, userpwd->pw_gid) == -1) {
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WARNING("cannot init supplementary groups "
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"of user \"%s\" at line %i: %s\n",
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param->value, param->line, strerror(errno));
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}
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#endif
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/* set uid */
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if (setuid(userpwd->pw_uid) == -1) {
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FATAL("cannot change to uid of user "
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"\"%s\" at line %i: %s\n",
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param->value, param->line, strerror(errno));
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}
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/* this is needed by libs such as arts */
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if (userpwd->pw_dir) {
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setenv("HOME", userpwd->pw_dir, 1);
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}
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}
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}
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static void openDB(Options * options, char *argv0)
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{
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if (options->createDB > 0 || db_load() < 0) {
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if (options->createDB < 0) {
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FATAL("can't open db file and using "
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"\"--no-create-db\" command line option\n"
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"try running \"%s --create-db\"\n", argv0);
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}
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if (db_check() < 0)
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exit(EXIT_FAILURE);
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db_init();
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if (db_save() < 0)
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exit(EXIT_FAILURE);
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if (options->createDB)
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exit(EXIT_SUCCESS);
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}
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}
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static void daemonize(Options * options)
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{
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FILE *fp = NULL;
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ConfigParam *pidFileParam = parseConfigFilePath(CONF_PID_FILE, 0);
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if (pidFileParam) {
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/* do this before daemon'izing so we can fail gracefully if we can't
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* write to the pid file */
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DEBUG("opening pid file\n");
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fp = fopen(pidFileParam->value, "w+");
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if (!fp) {
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FATAL("could not open %s \"%s\" (at line %i) for writing: %s\n",
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CONF_PID_FILE, pidFileParam->value,
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pidFileParam->line, strerror(errno));
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}
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}
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if (options->daemon) {
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int pid;
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fflush(NULL);
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pid = fork();
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if (pid > 0)
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_exit(EXIT_SUCCESS);
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else if (pid < 0) {
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FATAL("problems fork'ing for daemon!\n");
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}
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if (chdir("/") < 0) {
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FATAL("problems changing to root directory\n");
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}
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if (setsid() < 0) {
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FATAL("problems setsid'ing\n");
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}
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fflush(NULL);
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pid = fork();
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if (pid > 0)
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_exit(EXIT_SUCCESS);
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else if (pid < 0) {
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FATAL("problems fork'ing for daemon!\n");
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}
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DEBUG("daemonized!\n");
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}
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if (pidFileParam) {
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DEBUG("writing pid file\n");
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fprintf(fp, "%lu\n", (unsigned long)getpid());
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fclose(fp);
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}
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}
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static void cleanUpPidFile(void)
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{
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ConfigParam *pidFileParam = parseConfigFilePath(CONF_PID_FILE, 0);
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if (!pidFileParam)
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return;
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DEBUG("cleaning up pid file\n");
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unlink(pidFileParam->value);
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}
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static void killFromPidFile(void)
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{
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FILE *fp;
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ConfigParam *pidFileParam = parseConfigFilePath(CONF_PID_FILE, 0);
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int pid;
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if (!pidFileParam) {
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FATAL("no pid_file specified in the config file\n");
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}
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fp = fopen(pidFileParam->value, "r");
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if (!fp) {
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FATAL("unable to open %s \"%s\": %s\n",
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CONF_PID_FILE, pidFileParam->value, strerror(errno));
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}
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if (fscanf(fp, "%i", &pid) != 1) {
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FATAL("unable to read the pid from file \"%s\"\n",
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pidFileParam->value);
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}
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fclose(fp);
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if (kill(pid, SIGTERM)) {
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FATAL("unable to kill proccess %i: %s\n", pid, strerror(errno));
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}
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exit(EXIT_SUCCESS);
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}
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int main(int argc, char *argv[])
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{
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Options options;
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clock_t start;
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GTimer *save_state_timer;
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#ifdef HAVE_LOCALE
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/* initialize locale */
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setlocale(LC_CTYPE,"");
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#endif
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/* enable GLib's thread safety code */
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g_thread_init(NULL);
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initConf();
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parseOptions(argc, argv, &options);
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if (options.kill)
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killFromPidFile();
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initStats();
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tag_lib_init();
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log_init(options.verbose, options.stdOutput);
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if (options.createDB <= 0)
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listenOnPort();
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changeToUser();
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path_global_init();
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mapper_init();
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initPermissions();
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initPlaylist();
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#ifdef ENABLE_ARCHIVE
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archive_plugin_init_all();
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#endif
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decoder_plugin_init_all();
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update_global_init();
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init_main_notify();
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openDB(&options, argv[0]);
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command_init();
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initPlayerData();
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pc_init(buffered_before_play);
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music_pipe_init(buffered_chunks, &pc.notify);
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dc_init();
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initAudioConfig();
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initAudioDriver();
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initVolume();
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client_manager_init();
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replay_gain_global_init();
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initNormalization();
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input_stream_global_init();
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daemonize(&options);
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setup_log_output(options.stdOutput);
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initSigHandlers();
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initZeroconf();
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openVolumeDevice();
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decoder_thread_start();
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player_create();
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read_state_file();
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save_state_timer = g_timer_new();
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while (COMMAND_RETURN_KILL != client_manager_io() &&
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COMMAND_RETURN_KILL != handlePendingSignals()) {
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unsigned flags;
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syncPlayerAndPlaylist();
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client_manager_expire();
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reap_update_task();
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/* send "idle" notificaions to all subscribed
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clients */
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flags = idle_get();
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if (flags != 0)
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client_manager_idle_add(flags);
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if (g_timer_elapsed(save_state_timer, NULL) >= 5 * 60) {
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g_debug("Saving state file\n");
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write_state_file();
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g_timer_start(save_state_timer);
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}
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}
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g_timer_destroy(save_state_timer);
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write_state_file();
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playerKill();
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finishZeroconf();
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client_manager_deinit();
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closeAllListenSockets();
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finishPlaylist();
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start = clock();
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db_finish();
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DEBUG("db_finish took %f seconds\n",
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((float)(clock()-start))/CLOCKS_PER_SEC);
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deinit_main_notify();
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input_stream_global_finish();
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finishNormalization();
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finishAudioDriver();
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finishAudioConfig();
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finishVolume();
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mapper_finish();
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path_global_finish();
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finishPermissions();
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dc_deinit();
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pc_deinit();
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command_finish();
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update_global_finish();
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decoder_plugin_deinit_all();
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#ifdef ENABLE_ARCHIVE
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archive_plugin_deinit_all();
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#endif
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music_pipe_free();
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cleanUpPidFile();
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finishConf();
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close_log_files();
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return EXIT_SUCCESS;
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}
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