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-rw-r--r--trunk/src/main.c482
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diff --git a/trunk/src/main.c b/trunk/src/main.c
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-/* the Music Player Daemon (MPD)
- * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
- * This project's homepage is: http://www.musicpd.org
- *
- * This program 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.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "interface.h"
-#include "command.h"
-#include "playlist.h"
-#include "directory.h"
-#include "player.h"
-#include "listen.h"
-#include "conf.h"
-#include "path.h"
-#include "playerData.h"
-#include "stats.h"
-#include "sig_handlers.h"
-#include "audio.h"
-#include "volume.h"
-#include "log.h"
-#include "permission.h"
-#include "replayGain.h"
-#include "inputPlugin.h"
-#include "audioOutput.h"
-#include "inputStream.h"
-#include "state_file.h"
-#include "tag.h"
-#include "tagTracker.h"
-#include "dbUtils.h"
-#include "../config.h"
-#include "utils.h"
-#include "normalize.h"
-#include "zeroconf.h"
-
-#include <stdio.h>
-#include <sys/select.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <pwd.h>
-#include <grp.h>
-#include <time.h>
-#include <unistd.h>
-
-#define SYSTEM_CONFIG_FILE_LOCATION "/etc/mpd.conf"
-#define USER_CONFIG_FILE_LOCATION "/.mpdconf"
-
-typedef struct _Options {
- int kill;
- int daemon;
- int stdOutput;
- int createDB;
- int verbose;
-} Options;
-
-/*
- * from git-1.3.0, needed for solaris
- */
-#ifndef HAVE_SETENV
-static int setenv(const char *name, const char *value, int replace)
-{
- int out;
- size_t namelen, valuelen;
- char *envstr;
-
- if (!name || !value)
- return -1;
- if (!replace) {
- char *oldval = NULL;
- oldval = getenv(name);
- if (oldval)
- return 0;
- }
-
- namelen = strlen(name);
- valuelen = strlen(value);
- envstr = xmalloc((namelen + valuelen + 2));
- if (!envstr)
- return -1;
-
- memcpy(envstr, name, namelen);
- envstr[namelen] = '=';
- memcpy(envstr + namelen + 1, value, valuelen);
- envstr[namelen + valuelen + 1] = 0;
-
- out = putenv(envstr);
- /* putenv(3) makes the argument string part of the environment,
- * and changing that string modifies the environment --- which
- * means we do not own that storage anymore. Do not free
- * envstr.
- */
-
- return out;
-}
-#endif /* HAVE_SETENV */
-
-static void usage(char *argv[])
-{
- ERROR("usage:\n");
- ERROR(" %s [options] <conf file>\n", argv[0]);
- ERROR(" %s [options] (searches for ~%s then %s)\n",
- argv[0], USER_CONFIG_FILE_LOCATION, SYSTEM_CONFIG_FILE_LOCATION);
- ERROR("\n");
- ERROR("options:\n");
- ERROR(" --help this usage statement\n");
- ERROR(" --kill kill the currently running mpd session\n");
- ERROR
- (" --create-db force (re)creation of database and exit\n");
- ERROR
- (" --no-create-db don't create database, even if it doesn't exist\n");
- ERROR(" --no-daemon don't detach from console\n");
- ERROR(" --stdout print messages to stdout and stderr\n");
- ERROR(" --verbose verbose logging\n");
- ERROR(" --version prints version information\n");
-}
-
-static void version(void)
-{
- LOG("mpd (MPD: Music Player Daemon) %s\n", VERSION);
- LOG("\n");
- LOG("Copyright (C) 2003-2007 Warren Dukes <warren.dukes@gmail.com>\n");
- LOG("This is free software; see the source for copying conditions. There is NO\n");
- LOG("warranty; not even MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
- LOG("\n");
- LOG("Supported formats:\n");
-
- initInputPlugins();
- printAllInputPluginSuffixes(stdout);
-
- LOG("\n");
- LOG("Supported outputs:\n");
- loadAudioDrivers();
- printAllOutputPluginTypes(stdout);
-}
-
-static void parseOptions(int argc, char **argv, Options * options)
-{
- int argcLeft = argc;
-
- options->verbose = 0;
- options->daemon = 1;
- options->stdOutput = 0;
- options->createDB = 0;
- options->kill = 0;
-
- if (argc > 1) {
- int i = 1;
- while (i < argc) {
- if (strncmp(argv[i], "--", 2) == 0) {
- if (strcmp(argv[i], "--help") == 0) {
- usage(argv);
- exit(EXIT_SUCCESS);
- } else if (strcmp(argv[i], "--kill") == 0) {
- options->kill++;
- argcLeft--;
- } else if (strcmp(argv[i], "--no-daemon") == 0) {
- options->daemon = 0;
- argcLeft--;
- } else if (strcmp(argv[i], "--stdout") == 0) {
- options->stdOutput = 1;
- argcLeft--;
- } else if (strcmp(argv[i], "--create-db") == 0) {
- options->stdOutput = 1;
- options->createDB = 1;
- argcLeft--;
- } else if (strcmp(argv[i], "--no-create-db") ==
- 0) {
- options->createDB = -1;
- argcLeft--;
- } else if (strcmp(argv[i], "--verbose") == 0) {
- options->verbose = 1;
- argcLeft--;
- } else if (strcmp(argv[i], "--version") == 0) {
- version();
- exit(EXIT_SUCCESS);
- } else {
- fprintf(stderr,
- "unknown command line option: %s\n",
- argv[i]);
- exit(EXIT_FAILURE);
- }
- } else
- break;
- i++;
- }
- }
-
- if (argcLeft <= 2) {
- if (argcLeft == 2) {
- readConf(argv[argc - 1]);
- return;
- } else if (argcLeft == 1) {
- struct stat st;
- char *homedir = getenv("HOME");
- char userfile[MAXPATHLEN + 1] = "";
- if (homedir && (strlen(homedir) +
- strlen(USER_CONFIG_FILE_LOCATION)) <
- MAXPATHLEN) {
- strcpy(userfile, homedir);
- strcat(userfile, USER_CONFIG_FILE_LOCATION);
- }
- if (strlen(userfile) && (0 == stat(userfile, &st))) {
- readConf(userfile);
- return;
- } else if (0 == stat(SYSTEM_CONFIG_FILE_LOCATION, &st)) {
- readConf(SYSTEM_CONFIG_FILE_LOCATION);
- return;
- }
- }
- }
-
- usage(argv);
- exit(EXIT_FAILURE);
-}
-
-static void closeAllFDs(void)
-{
- int i;
- int fds = getdtablesize();
-
- for (i = 3; i < fds; i++)
- close(i);
-}
-
-static void changeToUser(void)
-{
- ConfigParam *param = getConfigParam(CONF_USER);
-
- if (param && strlen(param->value)) {
- /* get uid */
- struct passwd *userpwd;
- if ((userpwd = getpwnam(param->value)) == NULL) {
- FATAL("no such user \"%s\" at line %i\n", param->value,
- param->line);
- }
-
- if (setgid(userpwd->pw_gid) == -1) {
- FATAL("cannot setgid for user \"%s\" at line %i: %s\n",
- param->value, param->line, strerror(errno));
- }
-#ifdef _BSD_SOURCE
- /* init suplementary groups
- * (must be done before we change our uid)
- */
- if (initgroups(param->value, userpwd->pw_gid) == -1) {
- WARNING("cannot init supplementary groups "
- "of user \"%s\" at line %i: %s\n",
- param->value, param->line, strerror(errno));
- }
-#endif
-
- /* set uid */
- if (setuid(userpwd->pw_uid) == -1) {
- FATAL("cannot change to uid of user "
- "\"%s\" at line %i: %s\n",
- param->value, param->line, strerror(errno));
- }
-
- /* this is needed by libs such as arts */
- if (userpwd->pw_dir) {
- setenv("HOME", userpwd->pw_dir, 1);
- }
- }
-}
-
-static void openDB(Options * options, char *argv0)
-{
- if (options->createDB > 0 || readDirectoryDB() < 0) {
- if (options->createDB < 0) {
- FATAL("can't open db file and using "
- "\"--no-create-db\" command line option\n"
- "try running \"%s --create-db\"\n", argv0);
- }
- flushWarningLog();
- if (checkDirectoryDB() < 0)
- exit(EXIT_FAILURE);
- initMp3Directory();
- if (writeDirectoryDB() < 0)
- exit(EXIT_FAILURE);
- if (options->createDB)
- exit(EXIT_SUCCESS);
- }
-}
-
-static void daemonize(Options * options)
-{
- FILE *fp = NULL;
- ConfigParam *pidFileParam = parseConfigFilePath(CONF_PID_FILE, 0);
-
- if (pidFileParam) {
- /* do this before daemon'izing so we can fail gracefully if we can't
- * write to the pid file */
- DEBUG("opening pid file\n");
- fp = fopen(pidFileParam->value, "w+");
- if (!fp) {
- FATAL("could not open %s \"%s\" (at line %i) for writing: %s\n",
- CONF_PID_FILE, pidFileParam->value,
- pidFileParam->line, strerror(errno));
- }
- }
-
- if (options->daemon) {
- int pid;
-
- fflush(NULL);
- pid = fork();
- if (pid > 0)
- _exit(EXIT_SUCCESS);
- else if (pid < 0) {
- FATAL("problems fork'ing for daemon!\n");
- }
-
- if (chdir("/") < 0) {
- FATAL("problems changing to root directory\n");
- }
-
- if (setsid() < 0) {
- FATAL("problems setsid'ing\n");
- }
-
- fflush(NULL);
- pid = fork();
- if (pid > 0)
- _exit(EXIT_SUCCESS);
- else if (pid < 0) {
- FATAL("problems fork'ing for daemon!\n");
- }
-
- DEBUG("daemonized!\n");
- }
-
- if (pidFileParam) {
- DEBUG("writing pid file\n");
- fprintf(fp, "%lu\n", (unsigned long)getpid());
- fclose(fp);
- }
-}
-
-static void cleanUpPidFile(void)
-{
- ConfigParam *pidFileParam = parseConfigFilePath(CONF_PID_FILE, 0);
-
- if (!pidFileParam)
- return;
-
- DEBUG("cleaning up pid file\n");
-
- unlink(pidFileParam->value);
-}
-
-static void killFromPidFile(char *cmd, int killOption)
-{
- FILE *fp;
- ConfigParam *pidFileParam = parseConfigFilePath(CONF_PID_FILE, 0);
- int pid;
-
- if (!pidFileParam) {
- FATAL("no pid_file specified in the config file\n");
- }
-
- fp = fopen(pidFileParam->value, "r");
- if (!fp) {
- FATAL("unable to open %s \"%s\": %s\n",
- CONF_PID_FILE, pidFileParam->value, strerror(errno));
- }
- if (fscanf(fp, "%i", &pid) != 1) {
- FATAL("unable to read the pid from file \"%s\"\n",
- pidFileParam->value);
- }
- fclose(fp);
-
- if (kill(pid, SIGTERM)) {
- FATAL("unable to kill proccess %i: %s\n", pid, strerror(errno));
- }
- exit(EXIT_SUCCESS);
-}
-
-int main(int argc, char *argv[])
-{
- Options options;
- clock_t start;
-
- closeAllFDs();
-
- initConf();
-
- parseOptions(argc, argv, &options);
-
- if (options.kill)
- killFromPidFile(argv[0], options.kill);
-
- initStats();
- initTagConfig();
- initLog(options.verbose);
-
- if (options.createDB <= 0)
- listenOnPort();
-
- changeToUser();
-
- open_log_files(options.stdOutput);
-
- initPaths();
- initPermissions();
- initPlaylist();
- initInputPlugins();
-
- openDB(&options, argv[0]);
-
- initCommands();
- initPlayerData();
- initAudioConfig();
- initAudioDriver();
- initVolume();
- initInterfaces();
- initZeroconf();
- initReplayGainState();
- initNormalization();
- initInputStream();
-
- daemonize(&options);
-
- setup_log_output(options.stdOutput);
-
-
-
- initSigHandlers();
-
- openVolumeDevice();
- read_state_file();
-
- while (COMMAND_RETURN_KILL != doIOForInterfaces()) {
- if (COMMAND_RETURN_KILL == handlePendingSignals())
- break;
- syncPlayerAndPlaylist();
- closeOldInterfaces();
- readDirectoryDBIfUpdateIsFinished();
- }
-
- write_state_file();
- playerKill();
- finishZeroconf();
- freeAllInterfaces();
- closeAllListenSockets();
- finishPlaylist();
-
- start = clock();
- closeMp3Directory();
- DEBUG("closeMp3Directory took %f seconds\n",
- ((float)(clock()-start))/CLOCKS_PER_SEC);
-
- finishNormalization();
- finishAudioDriver();
- finishAudioConfig();
- finishVolume();
- finishPaths();
- finishPermissions();
- finishCommands();
- finishInputPlugins();
- cleanUpPidFile();
- finishConf();
- freePlayerData();
-
- close_log_files();
- return EXIT_SUCCESS;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-30 17:17:49 +0000