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interface.c
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interface.c
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/*
* MOC - music on console
* Copyright (C) 2004 - 2006 Damian Pietras <[email protected]>
*
* 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.
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdarg.h>
#include <locale.h>
#include <unistd.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <signal.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/wait.h>
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
/* Include dirent for various systems */
#ifdef HAVE_DIRENT_H
# include <dirent.h>
#else
# define dirent direct
# if HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
#endif
#define DEBUG
#include "log.h"
#include "interface_elements.h"
#include "interface.h"
#include "common.h"
#include "playlist.h"
#include "playlist_file.h"
#include "protocol.h"
#include "keys.h"
#include "options.h"
#include "files.h"
#include "decoder.h"
#include "themes.h"
#include "softmixer.h"
#include "utf8.h"
#define INTERFACE_LOG "mocp_client_log"
#define QUEUE_CLEAR_THRESH 128
/* Socket of the server connection. */
static int srv_sock = -1;
static struct plist *playlist = NULL; /* our playlist */
static struct plist *queue = NULL; /* our queue */
static struct plist *dir_plist = NULL; /* content of the current directory */
/* Queue for events coming from the server. */
static struct event_queue events;
/* Current working directory (the directory we show). */
static char cwd[PATH_MAX] = "";
/* If the user presses quit, or we receive a termination signal. */
static volatile enum want_quit want_quit = NO_QUIT;
/* If user presses CTRL-C, set this to 1. This should interrupt long operations
* that blocks the interface. */
static volatile int wants_interrupt = 0;
#ifdef SIGWINCH
/* If we get SIGWINCH. */
static volatile int want_resize = 0;
#endif
/* Are we waiting for the playlist we have loaded and sent to the clients? */
static int waiting_for_plist_load = 0;
/* Information about the currently played file. */
static struct file_info curr_file;
/* Silent seeking - where we are in seconds. -1 - no seeking. */
static int silent_seek_pos = -1;
static time_t silent_seek_key_last = (time_t)0; /* when the silent seek key was
last used */
/* When the menu was last moved (arrow keys, page up, etc.) */
static time_t last_menu_move_time = (time_t)0;
static void sig_quit (int sig ATTR_UNUSED)
{
want_quit = QUIT_CLIENT;
}
static void sig_interrupt (int sig)
{
logit ("Got signal %d: interrupt the operation", sig);
wants_interrupt = 1;
}
#ifdef SIGWINCH
static void sig_winch (int sig ATTR_UNUSED)
{
want_resize = 1;
}
#endif
int user_wants_interrupt ()
{
return wants_interrupt;
}
static void clear_interrupt ()
{
wants_interrupt = 0;
}
static void send_int_to_srv (const int num)
{
if (!send_int(srv_sock, num))
fatal ("Can't send() int to the server.");
}
static void send_str_to_srv (const char *str)
{
if (!send_str(srv_sock, str))
fatal ("Can't send() string to the server.");
}
static void send_item_to_srv (const struct plist_item *item)
{
if (!send_item(srv_sock, item))
fatal ("Can't send() item to the server.");
}
static int get_int_from_srv ()
{
int num;
if (!get_int(srv_sock, &num))
fatal ("Can't receive value from the server.");
return num;
}
/* Returned memory is malloc()ed. */
static char *get_str_from_srv ()
{
char *str = get_str (srv_sock);
if (!str)
fatal ("Can't receive string from the server.");
return str;
}
static struct file_tags *recv_tags_from_srv ()
{
struct file_tags *tags = recv_tags (srv_sock);
if (!tags)
fatal ("Can't receive tags from the server.");
return tags;
}
/* Noblocking version of get_int_from_srv(): return 0 if there are no data. */
static int get_int_from_srv_noblock (int *num)
{
enum noblock_io_status st;
if ((st = get_int_noblock(srv_sock, num)) == NB_IO_ERR)
fatal ("Can't receive value from the server.");
return st == NB_IO_OK ? 1 : 0;
}
static struct plist_item *recv_item_from_srv ()
{
struct plist_item *item;
if (!(item = recv_item(srv_sock)))
fatal ("Can't receive item from the server.");
return item;
}
static struct tag_ev_response *recv_tags_data_from_srv ()
{
struct tag_ev_response *r;
r = (struct tag_ev_response *)xmalloc (sizeof(struct tag_ev_response));
r->file = get_str_from_srv ();
if (!(r->tags = recv_tags(srv_sock)))
fatal ("Can't receive tags event's data from the server.");
return r;
}
static struct move_ev_data *recv_move_ev_data_from_srv ()
{
struct move_ev_data *d;
if (!(d = recv_move_ev_data(srv_sock)))
fatal ("Can't receive move data from the server");
return d;
}
/* Receive data for the given type of event and return them. Return NULL if
* there is no data for the event. */
static void *get_event_data (const int type)
{
switch (type) {
case EV_PLIST_ADD:
case EV_QUEUE_ADD:
return recv_item_from_srv ();
case EV_PLIST_DEL:
case EV_QUEUE_DEL:
case EV_STATUS_MSG:
return get_str_from_srv ();
case EV_FILE_TAGS:
return recv_tags_data_from_srv ();
case EV_PLIST_MOVE:
case EV_QUEUE_MOVE:
return recv_move_ev_data_from_srv ();
}
return NULL;
}
/* Wait for EV_DATA handling other events. */
static void wait_for_data ()
{
int event;
do {
event = get_int_from_srv ();
if (event != EV_DATA)
event_push (&events, event, get_event_data(event));
} while (event != EV_DATA);
}
/* Get an integer value from the server that will arrive after EV_DATA. */
static int get_data_int ()
{
wait_for_data ();
return get_int_from_srv ();
}
/* Get a string value from the server that will arrive after EV_DATA. */
static char *get_data_str ()
{
wait_for_data ();
return get_str_from_srv ();
}
static struct file_tags *get_data_tags ()
{
wait_for_data ();
return recv_tags_from_srv ();
}
static int send_tags_request (const char *file, const int tags_sel)
{
assert (file != NULL);
assert (tags_sel != 0);
if (file_type(file) == F_SOUND) {
send_int_to_srv (CMD_GET_FILE_TAGS);
send_str_to_srv (file);
send_int_to_srv (tags_sel);
debug ("Asking for tags for %s", file);
return 1;
}
else {
debug ("Not sending tags request for URL (%s)", file);
return 0;
}
}
/* Send all items from this playlist to other clients */
static void send_items_to_clients (const struct plist *plist)
{
int i;
for (i = 0; i < plist->num; i++)
if (!plist_deleted(plist, i)) {
send_int_to_srv (CMD_CLI_PLIST_ADD);
send_item_to_srv (&plist->items[i]);
}
}
static void init_playlists ()
{
dir_plist = (struct plist *)xmalloc (sizeof(struct plist));
plist_init (dir_plist);
playlist = (struct plist *)xmalloc (sizeof(struct plist));
plist_init (playlist);
queue = (struct plist *)xmalloc (sizeof(struct plist));
plist_init (queue);
/* set serial numbers for the playlist */
send_int_to_srv (CMD_GET_SERIAL);
plist_set_serial (playlist, get_data_int());
}
static void file_info_reset (struct file_info *f)
{
f->file = NULL;
f->tags = NULL;
f->title = NULL;
f->bitrate = -1;
f->rate = -1;
f->curr_time = -1;
f->total_time = -1;
f->channels = 1;
f->state = STATE_STOP;
}
static void file_info_cleanup (struct file_info *f)
{
if (f->tags)
tags_free (f->tags);
if (f->file)
free (f->file);
if (f->title)
free (f->title);
f->file = NULL;
f->tags = NULL;
f->title = NULL;
}
/* Initialise the block marker information. */
static void file_info_block_init (struct file_info *f)
{
f->block_file = NULL;
}
/* Reset the block start and end markers. */
static void file_info_block_reset (struct file_info *f)
{
if (f->block_file)
free (f->block_file);
f->block_file = NULL;
}
/* Enter the current time into a block start or end marker. */
static void file_info_block_mark (int *marker)
{
if (curr_file.state == STATE_STOP) {
error ("Cannot make block marks while stopped.");
} else if (file_type (curr_file.file) == F_URL) {
error ("Cannot make block marks in URLs.");
} else if (file_type (curr_file.file) != F_SOUND) {
error ("Cannot make block marks in non-audio files.");
} else if (!curr_file.block_file) {
error ("Cannot make block marks in files of unknown duration.");
} else {
*marker = curr_file.curr_time;
iface_set_block (curr_file.block_start, curr_file.block_end);
}
}
/* Get an integer option from the server (like shuffle) and set it. */
static void sync_int_option (const char *name)
{
int value;
send_int_to_srv (CMD_GET_OPTION);
send_str_to_srv (name);
value = get_data_int ();
option_set_int (name, value);
iface_set_option_state (name, value);
}
/* Get the server options and set our options like them. */
static void get_server_options ()
{
sync_int_option ("Shuffle");
sync_int_option ("Repeat");
sync_int_option ("AutoNext");
}
static int get_server_plist_serial ()
{
send_int_to_srv (CMD_PLIST_GET_SERIAL);
return get_data_int ();
}
static int get_mixer_value ()
{
send_int_to_srv (CMD_GET_MIXER);
return get_data_int ();
}
static int get_state ()
{
send_int_to_srv (CMD_GET_STATE);
return get_data_int ();
}
static int get_channels ()
{
send_int_to_srv (CMD_GET_CHANNELS);
return get_data_int ();
}
static int get_rate ()
{
send_int_to_srv (CMD_GET_RATE);
return get_data_int ();
}
static int get_bitrate ()
{
send_int_to_srv (CMD_GET_BITRATE);
return get_data_int ();
}
static int get_avg_bitrate ()
{
send_int_to_srv (CMD_GET_AVG_BITRATE);
return get_data_int ();
}
static int get_curr_time ()
{
send_int_to_srv (CMD_GET_CTIME);
return get_data_int ();
}
static char *get_curr_file ()
{
send_int_to_srv (CMD_GET_SNAME);
return get_data_str ();
}
static void update_mixer_value ()
{
int val = get_mixer_value ();
iface_set_mixer_value (val >= 0 ? val : 0);
}
static void update_mixer_name ()
{
char *name;
send_int_to_srv (CMD_GET_MIXER_CHANNEL_NAME);
name = get_data_str();
debug ("Mixer name: %s", name);
iface_set_mixer_name (name);
free (name);
update_mixer_value ();
}
/* Make new cwd path from CWD and this path */
static void set_cwd (char *path)
{
if (path[0] == '/')
strcpy (cwd, "/"); /* for absolute path */
else if (!cwd[0]) {
if (!getcwd(cwd, sizeof(cwd)))
fatal ("Can't get CWD: %s", strerror(errno));
}
resolve_path (cwd, sizeof(cwd), path);
}
/* Try to find the directory we can start and set cwd to it. */
static void set_start_dir ()
{
if (!getcwd(cwd, sizeof(cwd))) {
if (errno == ERANGE)
fatal ("CWD is larger than PATH_MAX!");
else if (!getenv("HOME"))
fatal ("$HOME is not set.");
strncpy (cwd, getenv("HOME"), sizeof(cwd));
if (cwd[sizeof(cwd)-1])
fatal ("$HOME is larger than PATH_MAX!");
}
}
/* Set cwd to last directory written to a file, return 1 on success. */
static int read_last_dir ()
{
FILE *dir_file;
int res = 1;
int read;
if (!(dir_file = fopen(create_file_name("last_directory"), "r")))
return 0;
if ((read = fread(cwd, sizeof(char), sizeof(cwd)-1, dir_file)) == 0)
res = 0;
else
cwd[read] = 0;
fclose (dir_file);
return res;
}
/* Check if dir2 is in dir1 */
static int is_subdir (const char *dir1, const char *dir2)
{
return !strncmp(dir1, dir2, strlen(dir1)) ? 1 : 0;
}
static int qsort_strcmp_func (const void *a, const void *b)
{
return strcoll (*(char **)a, *(char **)b);
}
static int qsort_dirs_func (const void *a, const void *b)
{
char *sa = *(char **)a;
char *sb = *(char **)b;
/* '../' is always first */
if (!strcmp(sa, "../"))
return -1;
if (!strcmp(sb, "../"))
return 1;
return strcoll (sa, sb);
}
static int get_tags_setting ()
{
int needed_tags = 0;
if (options_get_int("ReadTags"))
needed_tags |= TAGS_COMMENTS;
if (!strcasecmp(options_get_str("ShowTime"), "yes"))
needed_tags |= TAGS_TIME;
return needed_tags;
}
/* Send requests for the given tags for every file on the playlist that
* hasn't this tags. Return the number of requests. */
static int ask_for_tags (const struct plist *plist, const int tags_sel)
{
int i;
int req = 0;
assert (plist != NULL);
assert (tags_sel != 0);
for (i = 0; i < plist->num; i++)
if (!plist_deleted(plist, i) && (!plist->items[i].tags
|| ~plist->items[i].tags->filled
& tags_sel)) {
char *file = plist_get_file (plist, i);
req += send_tags_request (file, tags_sel);
free (file);
}
return req;
}
static void interface_message (const char *format, ...)
{
va_list va;
char message[128];
va_start (va, format);
vsnprintf (message, sizeof(message), format, va);
message[sizeof(message)-1] = 0;
va_end (va);
iface_message (message);
}
/* Update tags (and titles) for the given item on the playlist with new tags. */
static void update_item_tags (struct plist *plist, const int num,
const struct file_tags *tags)
{
struct file_tags *old_tags = plist_get_tags (plist, num);
plist_set_tags (plist, num, tags);
/* Get the time from the old tags if it's not presend in the new tags.
* FIXME: There is risk, that the file was modified and the time
* from the old tags is not valid. */
if (!(tags->filled & TAGS_TIME) && old_tags && old_tags->time != -1)
plist_set_item_time (plist, num, old_tags->time);
if (plist->items[num].title_tags) {
free (plist->items[num].title_tags);
plist->items[num].title_tags = NULL;
}
make_tags_title (plist, num);
if (options_get_int("ReadTags")) {
if (plist->items[num].title_tags)
plist->items[num].title = plist->items[num].title_tags;
else {
if (!plist->items[num].title_file)
make_file_title (plist, num, options_get_int(
"HideFileExtension"));
plist->items[num].title = plist->items[num].title_file;
}
}
if (old_tags)
tags_free (old_tags);
}
/* Handle EV_FILE_TAGS. */
static void ev_file_tags (const struct tag_ev_response *data)
{
int n;
assert (data != NULL);
assert (data->file != NULL);
assert (data->tags != NULL);
debug ("Received tags for %s", data->file);
if ((n = plist_find_fname(dir_plist, data->file)) != -1) {
update_item_tags (dir_plist, n, data->tags);
iface_update_item (IFACE_MENU_DIR, dir_plist, n);
}
if ((n = plist_find_fname(playlist, data->file)) != -1) {
update_item_tags (playlist, n, data->tags);
iface_update_item (IFACE_MENU_PLIST, playlist, n);
}
if (curr_file.file && !strcmp(data->file, curr_file.file)) {
debug ("Tags apply to the currently played file.");
if (data->tags->time != -1) {
curr_file.total_time = data->tags->time;
iface_set_total_time (curr_file.total_time);
if (file_type (curr_file.file) == F_SOUND) {
if (!curr_file.block_file) {
curr_file.block_file = xstrdup(curr_file.file);
curr_file.block_start = 0;
curr_file.block_end = curr_file.total_time;
}
iface_set_block (curr_file.block_start, curr_file.block_end);
}
}
else
debug ("No time information");
if (data->tags->title) {
if (curr_file.title)
free (curr_file.title);
curr_file.title = build_title (data->tags);
iface_set_played_file_title (curr_file.title);
}
if (curr_file.tags)
tags_free (curr_file.tags);
curr_file.tags = tags_dup (data->tags);
}
}
/* Update the current time. */
static void update_ctime ()
{
curr_file.curr_time = get_curr_time ();
if (silent_seek_pos == -1)
iface_set_curr_time (curr_file.curr_time);
}
/* Use new tags for current file title (for Internet streams). */
static void update_curr_tags ()
{
if (curr_file.file && is_url(curr_file.file)) {
if (curr_file.tags)
tags_free (curr_file.tags);
send_int_to_srv (CMD_GET_TAGS);
curr_file.tags = get_data_tags ();
if (curr_file.tags->title) {
curr_file.title = build_title (curr_file.tags);
iface_set_played_file_title (curr_file.title);
}
}
}
/* Make sure that the currently played file is visible if it is in one of our
* menus. */
static void follow_curr_file ()
{
if (curr_file.file && file_type(curr_file.file) == F_SOUND
&& last_menu_move_time <= time(NULL) - 2) {
int server_plist_serial = get_server_plist_serial();
if (server_plist_serial == plist_get_serial(playlist))
iface_make_visible (IFACE_MENU_PLIST, curr_file.file);
else if (server_plist_serial == plist_get_serial(dir_plist))
iface_make_visible (IFACE_MENU_DIR, curr_file.file);
else
logit ("Not my playlist.");
}
}
static void update_curr_file ()
{
char *file;
file = get_curr_file ();
if (!file[0] || curr_file.state == STATE_STOP) {
/* Nothing is played/paused */
file_info_cleanup (&curr_file);
file_info_reset (&curr_file);
iface_set_played_file (NULL);
free (file);
}
else if (file[0] &&
(!curr_file.file || strcmp(file, curr_file.file))) {
/* played file has changed */
file_info_cleanup (&curr_file);
if (curr_file.block_file && strcmp(file, curr_file.block_file))
file_info_block_reset (&curr_file);
/* The total time could not get reset. */
iface_set_total_time (-1);
iface_set_played_file (file);
send_tags_request (file, TAGS_COMMENTS | TAGS_TIME);
curr_file.file = file;
/* make a title that will be used until we get tags */
if (file_type(file) == F_URL || !strchr(file, '/')) {
curr_file.title = xstrdup (file);
update_curr_tags ();
}
else
{
if (options_get_int ("FileNamesIconv"))
{
curr_file.title = files_iconv_str (
strrchr(file, '/') + 1);
}
else
{
curr_file.title = xstrdup (
strrchr(file, '/') + 1);
}
}
iface_set_played_file (file);
iface_set_played_file_title (curr_file.title);
/* Try to load the lyrics of the new file */
iface_load_lyrics (file);
/* Silent seeking makes no sense if the playing file has
* changed */
silent_seek_pos = -1;
iface_set_curr_time (curr_file.curr_time);
if (options_get_int("FollowPlayedFile"))
follow_curr_file ();
}
else
free (file);
}
static void update_rate ()
{
curr_file.rate = get_rate ();
iface_set_rate (curr_file.rate);
}
static void update_channels ()
{
curr_file.channels = get_channels () == 2 ? 2 : 1;
iface_set_channels (curr_file.channels);
}
static void update_bitrate ()
{
curr_file.bitrate = get_bitrate ();
iface_set_bitrate (curr_file.bitrate);
}
/* Get and show the server state. */
static void update_state ()
{
int old_state = curr_file.state;
/* play | stop | pause */
curr_file.state = get_state ();
iface_set_state (curr_file.state);
/* Silent seeking makes no sense if the state has changed. */
if (old_state != curr_file.state)
silent_seek_pos = -1;
update_curr_file ();
update_channels ();
update_bitrate ();
update_rate ();
update_ctime ();
}
/* Handle EV_PLIST_ADD. */
static void event_plist_add (const struct plist_item *item)
{
if (plist_find_fname(playlist, item->file) == -1) {
int item_num = plist_add_from_item (playlist, item);
int needed_tags = 0;
int i;
if (options_get_int("ReadTags")
&& (!item->tags || !item->tags->title))
needed_tags |= TAGS_COMMENTS;
if (!strcasecmp(options_get_str("ShowTime"), "yes")
&& (!item->tags || item->tags->time == -1))
needed_tags |= TAGS_TIME;
if (needed_tags)
send_tags_request (item->file, needed_tags);
if (options_get_int("ReadTags")) {
make_tags_title (playlist, item_num);
if (playlist->items[item_num].title_tags)
playlist->items[item_num].title =
playlist->items[item_num].title_tags;
else
playlist->items[item_num].title =
playlist->items[item_num].title_file;
}
else {
make_file_title (playlist, item_num,
options_get_int("HideFileExtension"));
playlist->items[item_num].title =
playlist->items[item_num].title_file;
}
/* Just calling iface_update_queue_positions (queue, playlist,
* NULL, NULL) is too slow in cases when we receive a large
* number of items from server (e.g., loading playlist w/
* SyncPlaylist on). Since we know the filename in question,
* we try to find it in queue and eventually update the value
*/
if ((i = plist_find_fname(queue, item->file)) != -1) {
playlist->items[item_num].queue_pos
= plist_get_position (queue, i);
}
iface_add_to_plist (playlist, item_num);
if (waiting_for_plist_load) {
if (iface_in_dir_menu())
iface_switch_to_plist ();
waiting_for_plist_load = 0;
}
}
}
/* Handle EV_QUEUE_ADD. */
static void event_queue_add (const struct plist_item *item)
{
if (plist_find_fname(queue, item->file) == -1) {
plist_add_from_item (queue, item);
iface_set_files_in_queue (plist_count(queue));
iface_update_queue_position_last (queue, playlist, dir_plist);
logit ("Adding %s to queue", item->file);
}
else
logit ("Adding file already present in queue");
}
/* Get error message from the server and show it. */
static void update_error ()
{
char *err;
send_int_to_srv (CMD_GET_ERROR);
err = get_data_str ();
error (err);
free (err);
}
/* Send the playlist to the server to be forwarded to another client. */
static void forward_playlist ()
{
int i;
debug ("Forwarding the playlist...");
send_int_to_srv (CMD_SEND_PLIST);
send_int_to_srv (plist_get_serial(playlist));
for (i = 0; i < playlist->num; i++)
if (!plist_deleted(playlist, i))
send_item_to_srv (&playlist->items[i]);
send_item_to_srv (NULL);
}
static int recv_server_plist (struct plist *plist)
{
int end_of_list = 0;
struct plist_item *item;
logit ("Asking server for the playlist from other client.");
send_int_to_srv (CMD_GET_PLIST);
logit ("Waiting for response");
wait_for_data ();
if (!get_int_from_srv()) {
debug ("There is no playlist");
return 0; /* there are no other clients with a playlist */
}
logit ("There is a playlist, getting...");
wait_for_data ();
logit ("Transfer...");
plist_set_serial (plist, get_int_from_srv());
do {
item = recv_item_from_srv ();
if (item->file[0])
plist_add_from_item (plist, item);
else
end_of_list = 1;
plist_free_item_fields (item);
free (item);
} while (!end_of_list);
return 1;
}
static void recv_server_queue (struct plist *queue)
{
int end_of_list = 0;
struct plist_item *item;
logit ("Asking server for the queue.");
send_int_to_srv (CMD_GET_QUEUE);
logit ("Waiting for response");
wait_for_data (); /* There must always be (possibly empty) queue. */
do {
item = recv_item_from_srv ();
if (item->file[0])
plist_add_from_item (queue, item);
else
end_of_list = 1;
plist_free_item_fields (item);
free (item);
} while (!end_of_list);
}
/* Clear the playlist locally */
static void clear_playlist ()
{
if (iface_in_plist_menu())
iface_switch_to_dir ();
plist_clear (playlist);
iface_clear_plist ();
if (!waiting_for_plist_load)
interface_message ("The playlist was cleared.");
iface_set_status ("");
}