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|
/*
DeaDBeeF - ultimate music player for GNU/Linux systems with X11
Copyright (C) 2009-2010 Alexey Yakovenko <waker@users.sourceforge.net>
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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stddef.h>
#include <time.h>
#ifdef __linux__
#include <sys/prctl.h>
#endif
#ifndef __linux__
#define _POSIX_C_SOURCE
#endif
#include <limits.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/fcntl.h>
#include <sys/errno.h>
#include <signal.h>
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "playlist.h"
#include "playback.h"
#include "unistd.h"
#include "threading.h"
#include "messagepump.h"
#include "streamer.h"
#include "conf.h"
#include "volume.h"
#include "session.h"
#include "plugins.h"
#ifndef PATH_MAX
#define PATH_MAX 1024 /* max # of characters in a path name */
#endif
#ifndef PREFIX
#error PREFIX must be defined
#endif
#ifdef __linux__
#define USE_ABSTRACT_NAME 0
#endif
// some common global variables
char confdir[1024]; // $HOME/.config
char dbconfdir[1024]; // $HOME/.config/deadbeef
char defpl[1024]; // $HOME/.config/deadbeef/default.dbpl
// client-side commandline support
// -1 error, program must exit with error code -1
// 0 proceed normally as nothing happened
// 1 no error, but program must exit with error code 0
int
client_exec_command_line (const char *cmdline, int len) {
const uint8_t *parg = (const uint8_t *)cmdline;
const uint8_t *pend = cmdline + len;
while (parg < pend) {
// if (filter == 1) {
// help, version and nowplaying are executed with any filter
if (!strcmp (parg, "--help") || !strcmp (parg, "-h")) {
fprintf (stdout, "Usage: deadbeef [options] [file(s)]\n");
fprintf (stdout, "Options:\n");
fprintf (stdout, " --help or -h Print help (this message) and exit\n");
fprintf (stdout, " --quit Quit player\n");
fprintf (stdout, " --version Print version info and exit\n");
fprintf (stdout, " --play Start playback\n");
fprintf (stdout, " --stop Stop playback\n");
fprintf (stdout, " --pause Pause playback\n");
fprintf (stdout, " --next Next song in playlist\n");
fprintf (stdout, " --prev Previous song in playlist\n");
fprintf (stdout, " --random Random song in playlist\n");
fprintf (stdout, " --queue Append file(s) to existing playlist\n");
fprintf (stdout, " --nowplaying FMT Print formatted track name to stdout\n");
fprintf (stdout, " FMT %%-syntax: [a]rtist, [t]itle, al[b]um,\n"
" [l]ength, track[n]umber, [y]ear, [c]omment,\n"
" copy[r]ight, [e]lapsed\n");
fprintf (stdout, " e.g.: --nowplaying \"%%a - %%t\" should print \"artist - title\"\n");
return 1;
}
else if (!strcmp (parg, "--version")) {
fprintf (stdout, "DeaDBeeF " VERSION " Copyright © 2009-2010 Alexey Yakovenko\n");
return 1;
}
parg += strlen (parg);
parg++;
}
return 0;
}
// this function executes server-side commands only
// must be called only from within server
// -1 error, program must exit with error code -1
// 0 proceed normally as nothing happened
// 1 no error, but program must exit with error code 0
// 2 don't load playlist on startup
// when executed in remote server -- error code will be ignored
int
server_exec_command_line (const char *cmdline, int len, char *sendback, int sbsize) {
if (sendback) {
sendback[0] = 0;
}
const uint8_t *parg = (const uint8_t *)cmdline;
const uint8_t *pend = cmdline + len;
int queue = 0;
while (parg < pend) {
if (!strcmp (parg, "--nowplaying")) {
parg += strlen (parg);
parg++;
if (parg >= pend) {
if (sendback) {
snprintf (sendback, sbsize, "error --nowplaying expects format argument\n");
return 0;
}
else {
fprintf (stderr, "--nowplaying expects format argument\n");
return -1;
}
}
if (sendback) {
playItem_t *curr = streamer_get_playing_track ();
DB_fileinfo_t *dec = streamer_get_current_decoder ();
if (curr && dec) {
const char np[] = "nowplaying ";
memcpy (sendback, np, sizeof (np)-1);
pl_format_title (curr, -1, sendback+sizeof(np)-1, sbsize-sizeof(np)+1, -1, parg);
}
else {
strcpy (sendback, "nowplaying nothing");
}
}
else {
char out[2048];
playItem_t *curr = streamer_get_playing_track ();
DB_fileinfo_t *dec = streamer_get_current_decoder ();
if (curr && dec) {
pl_format_title (curr, -1, out, sizeof (out), -1, parg);
}
else {
strcpy (out, "nothing");
}
fwrite (out, 1, strlen (out), stdout);
return 1; // exit
}
}
else if (!strcmp (parg, "--next")) {
messagepump_push (M_NEXTSONG, 0, 0, 0);
return 0;
}
else if (!strcmp (parg, "--prev")) {
messagepump_push (M_PREVSONG, 0, 0, 0);
return 0;
}
else if (!strcmp (parg, "--play")) {
messagepump_push (M_PLAYSONG, 0, 0, 0);
return 0;
}
else if (!strcmp (parg, "--stop")) {
messagepump_push (M_STOPSONG, 0, 0, 0);
return 0;
}
else if (!strcmp (parg, "--pause")) {
messagepump_push (M_PAUSESONG, 0, 0, 0);
return 0;
}
else if (!strcmp (parg, "--random")) {
messagepump_push (M_PLAYRANDOM, 0, 0, 0);
return 0;
}
else if (!strcmp (parg, "--queue")) {
queue = 1;
}
else if (!strcmp (parg, "--quit")) {
messagepump_push (M_TERMINATE, 0, 0, 0);
}
else if (parg[0] != '-') {
break; // unknown option is filename
}
parg += strlen (parg);
parg++;
}
if (parg < pend) {
// add files
if (!queue) {
pl_free ();
pl_reset_cursor ();
}
while (parg < pend) {
char resolved[PATH_MAX];
const char *pname;
if (realpath (parg, resolved)) {
pname = resolved;
}
else {
pname = parg;
}
if (pl_add_file (pname, NULL, NULL) < 0) {
fprintf (stderr, "failed to add file %s\n", pname);
}
parg += strlen (parg);
parg++;
}
messagepump_push (M_PLAYLISTREFRESH, 0, 0, 0);
if (!queue) {
messagepump_push (M_PLAYSONG, 0, 0, 0);
return 2; // don't reload playlist at startup
}
}
return 0;
}
static struct sockaddr_un srv_local;
static struct sockaddr_un srv_remote;
static unsigned srv_socket;
#if USE_ABSTRACT_NAME
static char server_id[] = "\0deadbeefplayer";
#endif
int
server_start (void) {
fprintf (stderr, "server_start\n");
srv_socket = socket (AF_UNIX, SOCK_STREAM, 0);
int flags;
flags = fcntl (srv_socket, F_GETFL,0);
if (flags == -1) {
perror ("fcntl F_GETFL");
return -1;
}
if (fcntl(srv_socket, F_SETFL, flags | O_NONBLOCK) < 0) {
perror ("fcntl F_SETFL");
return -1;
}
memset (&srv_local, 0, sizeof (srv_local));
srv_local.sun_family = AF_UNIX;
#if USE_ABSTRACT_NAME
memcpy (srv_local.sun_path, server_id, sizeof (server_id));
int len = offsetof(struct sockaddr_un, sun_path) + sizeof (server_id)-1;
#else
snprintf (srv_local.sun_path, sizeof (srv_local.sun_path), "%s/socket", dbconfdir);
if (unlink(srv_local.sun_path) < 0) {
perror ("INFO: unlink socket");
}
int len = offsetof(struct sockaddr_un, sun_path) + strlen (srv_local.sun_path);
#endif
if (bind(srv_socket, (struct sockaddr *)&srv_local, len) < 0) {
perror ("bind");
return -1;
}
if (listen(srv_socket, 5) == -1) {
perror("listen");
return -1;
}
return 0;
}
void
server_close (void) {
if (srv_socket) {
close (srv_socket);
srv_socket = 0;
}
}
int
server_update (void) {
// handle remote stuff
int t = sizeof (srv_remote);
unsigned s2;
s2 = accept(srv_socket, (struct sockaddr *)&srv_remote, &t);
if (s2 == -1 && errno != EAGAIN && errno != EWOULDBLOCK) {
perror("accept");
return -1;
}
else if (s2 != -1) {
char str[2048];
char sendback[1024] = "";
int size;
if ((size = recv (s2, str, 2048, 0)) >= 0) {
if (size == 1 && str[0] == 0) {
// FIXME: that should be called right after activation of gui plugin
plug_trigger_event (DB_EV_ACTIVATE, 0);
}
else {
server_exec_command_line (str, size, sendback, sizeof (sendback));
}
}
if (sendback[0]) {
// send nowplaying back to client
send (s2, sendback, strlen (sendback)+1, 0);
}
else {
send (s2, "", 1, 0);
}
close(s2);
}
return 0;
}
void
player_mainloop (void) {
for (;;) {
static int srvupd_count = 0;
if (--srvupd_count <= 0) {
srvupd_count = 10;
if (server_update () < 0) {
messagepump_push (M_TERMINATE, 0, 0, 0);
}
}
uint32_t msg;
uintptr_t ctx;
uint32_t p1;
uint32_t p2;
while (messagepump_pop(&msg, &ctx, &p1, &p2) != -1) {
switch (msg) {
case M_REINIT_SOUND:
plug_reinit_sound ();
break;
case M_TERMINATE:
return;
case M_SONGCHANGED:
plug_trigger_event_trackchange (p1, p2);
break;
case M_PLAYSONG:
streamer_play_current_track ();
break;
case M_TRACKCHANGED:
plug_trigger_event_trackinfochanged (p1);
break;
case M_PLAYSONGNUM:
p_stop ();
pl_playqueue_clear ();
streamer_set_nextsong (p1, 1);
break;
case M_STOPSONG:
streamer_set_nextsong (-2, 0);
break;
case M_NEXTSONG:
p_stop ();
streamer_move_nextsong (1);
break;
case M_PREVSONG:
p_stop ();
streamer_move_prevsong ();
break;
case M_PAUSESONG:
if (p_get_state () == OUTPUT_STATE_PAUSED) {
p_unpause ();
plug_trigger_event_paused (0);
}
else {
p_pause ();
plug_trigger_event_paused (1);
}
break;
case M_PLAYRANDOM:
p_stop ();
streamer_move_randomsong ();
break;
case M_PLAYLISTREFRESH:
plug_trigger_event_playlistchanged ();
break;
case M_CONFIGCHANGED:
//plug_get_output ()->configchanged ();
streamer_configchanged ();
plug_trigger_event (DB_EV_CONFIGCHANGED, 0);
break;
}
}
usleep(50000);
plug_trigger_event (DB_EV_FRAMEUPDATE, 0);
}
}
static int sigterm_handled = 0;
void
atexit_handler (void) {
fprintf (stderr, "atexit_handler\n");
if (!sigterm_handled) {
fprintf (stderr, "handling atexit.\n");
pl_save (defpl);
conf_save ();
}
}
void
sigterm_handler (int sig) {
fprintf (stderr, "got sigterm.\n");
atexit_handler ();
sigterm_handled = 1;
fprintf (stderr, "bye.\n");
exit (0);
}
int
main (int argc, char *argv[]) {
srand (time (NULL));
#ifdef __linux__
prctl (PR_SET_NAME, "deadbeef-main", 0, 0, 0, 0);
#endif
char *homedir = getenv ("HOME");
if (!homedir) {
fprintf (stderr, "unable to find home directory. stopping.\n");
return -1;
}
char *xdg_conf_dir = getenv ("XDG_CONFIG_HOME");
if (xdg_conf_dir) {
if (snprintf (confdir, sizeof (confdir), "%s", xdg_conf_dir) > sizeof (confdir)) {
fprintf (stderr, "fatal: XDG_CONFIG_HOME value is too long: %s\n", xdg_conf_dir);
return -1;
}
}
else {
if (snprintf (confdir, sizeof (confdir), "%s/.config", homedir) > sizeof (confdir)) {
fprintf (stderr, "fatal: HOME value is too long: %s\n", homedir);
return -1;
}
}
if (snprintf (defpl, sizeof (defpl), "%s/deadbeef/default.dbpl", confdir) > sizeof (defpl)) {
fprintf (stderr, "fatal: out of memory while configuring\n");
return -1;
}
mkdir (confdir, 0755);
if (snprintf (dbconfdir, sizeof (dbconfdir), "%s/deadbeef", confdir) > sizeof (dbconfdir)) {
fprintf (stderr, "fatal: out of memory while configuring\n");
return -1;
}
mkdir (dbconfdir, 0755);
char cmdline[2048];
cmdline[0] = 0;
int size = 0;
if (argc > 1) {
size = 2048;
// join command line into single string
char *p = cmdline;
cmdline[0] = 0;
for (int i = 1; i < argc; i++) {
if (size < 2) {
break;
}
if (i > 1) {
size--;
p++;
}
int len = strlen (argv[i]);
if (len >= size) {
break;
}
char resolved[PATH_MAX];
// need to resolve path here, because remote doesn't know current
// path of this process
if (argv[i][0] != '-' && realpath (argv[i], resolved)) {
len = strlen (resolved);
if (len >= size) {
break;
}
memcpy (p, resolved, len+1);
}
else {
memcpy (p, argv[i], len+1);
}
p += len;
size -= len;
}
size = 2048 - size + 1;
}
int res;
res = client_exec_command_line (cmdline, size);
if (res == 1) {
return 0;
}
else if (res < 0) {
return res;
}
// try to connect to remote player
int s, len;
struct sockaddr_un remote;
if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(1);
}
memset (&remote, 0, sizeof (remote));
remote.sun_family = AF_UNIX;
#if USE_ABSTRACT_NAME
memcpy (remote.sun_path, server_id, sizeof (server_id));
len = offsetof(struct sockaddr_un, sun_path) + sizeof (server_id)-1;
#else
snprintf (remote.sun_path, sizeof (remote.sun_path), "%s/socket", dbconfdir);
len = offsetof(struct sockaddr_un, sun_path) + strlen (remote.sun_path);
#endif
if (connect(s, (struct sockaddr *)&remote, len) == 0) {
if (argc <= 1) {
cmdline[0] = 0;
size = 1;
}
// pass args to remote and exit
if (send(s, cmdline, size, 0) == -1) {
perror ("send");
exit (-1);
}
char out[2048] = "";
ssize_t sz = recv(s, out, sizeof (out), 0);
if (sz == -1) {
fprintf (stderr, "failed to pass args to remote!\n");
exit (-1);
}
else {
// check if that's nowplaying response
const char np[] = "nowplaying ";
const char err[] = "error ";
if (!strncmp (out, np, sizeof (np)-1)) {
const char *prn = &out[sizeof (np)-1];
fwrite (prn, 1, strlen (prn), stdout);
}
else if (!strncmp (out, err, sizeof (err)-1)) {
const char *prn = &out[sizeof (err)-1];
fwrite (prn, 1, strlen (prn), stderr);
}
else if (sz > 0 && out[0]) {
fprintf (stderr, "got unknown response:\nlength=%d\n%s\n", sz, out);
}
}
close (s);
exit (0);
}
else {
perror ("INFO: failed to connect to existing session:");
}
close(s);
// hack: report nowplaying
if (!strcmp (cmdline, "--nowplaying")) {
char nothing[] = "nothing";
fwrite (nothing, 1, sizeof (nothing)-1, stdout);
return 0;
}
conf_load (); // required by some plugin at startup
messagepump_init (); // required to push messages while handling commandline
plug_load_all (); // required to add files to playlist from commandline
plt_add (0, "Default");
// execute server commands in local context
int noloadpl = 0;
if (argc > 1) {
res = server_exec_command_line (cmdline, size, NULL, 0);
// some of the server commands ran on 1st instance should terminate it
if (res == 2) {
noloadpl = 1;
}
else if (res > 0) {
exit (0);
}
else if (res < 0) {
exit (-1);
}
}
// become a server
if (server_start () < 0) {
exit (-1);
}
signal (SIGTERM, sigterm_handler);
atexit (atexit_handler); // helps to save in simple cases, like xkill
// start all subsystems
volume_set_db (conf_get_float ("playback.volume", 0));
if (!noloadpl) {
pl_load (defpl);
}
plug_trigger_event_playlistchanged ();
// this is old code left for backwards compatibility
{
char sessfile[1024]; // $HOME/.config/deadbeef/session
if (snprintf (sessfile, sizeof (sessfile), "%s/deadbeef/session", confdir) < sizeof (sessfile)) {
session_load (sessfile);
}
}
streamer_init ();
// this runs in main thread (blocks right here)
player_mainloop ();
// save config
pl_save (defpl);
conf_save ();
{
char sessfile[1024]; // $HOME/.config/deadbeef/session
if (snprintf (sessfile, sizeof (sessfile), "%s/deadbeef/session", confdir) < sizeof (sessfile)) {
unlink (sessfile);
}
}
// stop receiving messages from outside
server_close ();
// stop streaming and playback before unloading plugins
p_stop ();
p_free ();
streamer_free ();
// plugins might still hood references to playitems,
// and query configuration in background
// so unload everything 1st before final cleanup
plug_unload_all ();
// at this point we can simply do exit(0), but let's clean up for debugging
pl_free ();
conf_free ();
messagepump_free ();
plt_free ();
plug_free_decoder_ids ();
sigterm_handled = 1;
fprintf (stderr, "hej-hej!\n");
return 0;
}
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