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job.c
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/*
* Copyright 2008-2013 Various Authors
* Copyright 2008 Timo Hirvonen
*
* 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 "job.h"
#include "worker.h"
#include "cache.h"
#include "xmalloc.h"
#include "debug.h"
#include "load_dir.h"
#include "path.h"
#include "editable.h"
#include "pl.h"
#include "play_queue.h"
#include "lib.h"
#include "utils.h"
#include "file.h"
#include "cache.h"
#include "player.h"
#include "discid.h"
#include "xstrjoin.h"
#ifdef HAVE_CONFIG
#include "config/cue.h"
#endif
#ifdef CONFIG_CUE
#include "cue_utils.h"
#endif
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
static struct track_info *ti_buffer[32];
static int ti_buffer_fill;
static struct add_data *jd;
static void flush_ti_buffer(void)
{
int i;
editable_lock();
for (i = 0; i < ti_buffer_fill; i++) {
jd->add(ti_buffer[i]);
track_info_unref(ti_buffer[i]);
}
editable_unlock();
ti_buffer_fill = 0;
}
static void add_ti(struct track_info *ti)
{
if (ti_buffer_fill == N_ELEMENTS(ti_buffer))
flush_ti_buffer();
ti_buffer[ti_buffer_fill++] = ti;
}
#ifdef CONFIG_CUE
static int add_file_cue(const char *filename);
#endif
static void add_file(const char *filename, int force)
{
struct track_info *ti;
#ifdef CONFIG_CUE
if (!is_cue_url(filename)) {
if (force || lookup_cache_entry(filename, hash_str(filename)) == NULL) {
int done = add_file_cue(filename);
if (done)
return;
}
}
#endif
cache_lock();
ti = cache_get_ti(filename, force);
cache_unlock();
if (ti)
add_ti(ti);
}
#ifdef CONFIG_CUE
static int add_file_cue(const char *filename)
{
int n_tracks;
char *url;
char *cue_filename;
cue_filename = associated_cue(filename);
if (cue_filename == NULL)
return 0;
n_tracks = cue_get_ntracks(cue_filename);
if (n_tracks <= 0) {
free(cue_filename);
return 0;
}
for (int i = 1; i <= n_tracks; ++i) {
url = construct_cue_url(cue_filename, i);
add_file(url, 0);
free(url);
}
free(cue_filename);
return 1;
}
#endif
static void add_url(const char *url)
{
add_file(url, 0);
}
static void add_cdda(const char *url)
{
char *disc_id = NULL;
int start_track = 1, end_track = -1;
parse_cdda_url(url, &disc_id, &start_track, &end_track);
if (end_track != -1) {
int i;
for (i = start_track; i <= end_track; i++) {
char *new_url = gen_cdda_url(disc_id, i, -1);
add_file(new_url, 0);
free(new_url);
}
} else
add_file(url, 0);
free(disc_id);
}
static int dir_entry_cmp(const void *ap, const void *bp)
{
struct dir_entry *a = *(struct dir_entry **)ap;
struct dir_entry *b = *(struct dir_entry **)bp;
return strcmp(a->name, b->name);
}
static int dir_entry_cmp_reverse(const void *ap, const void *bp)
{
struct dir_entry *a = *(struct dir_entry **)ap;
struct dir_entry *b = *(struct dir_entry **)bp;
return strcmp(b->name, a->name);
}
static int points_within(const char *target, const char *root)
{
int tlen = strlen(target);
int rlen = strlen(root);
if (rlen > tlen)
return 0;
if (strncmp(target, root, rlen))
return 0;
return target[rlen] == '/' || !target[rlen];
}
static void add_dir(const char *dirname, const char *root)
{
struct directory dir;
struct dir_entry **ents;
const char *name;
PTR_ARRAY(array);
int i;
if (dir_open(&dir, dirname)) {
d_print("error: opening %s: %s\n", dirname, strerror(errno));
return;
}
while ((name = dir_read(&dir))) {
struct dir_entry *ent;
int size;
if (name[0] == '.')
continue;
if (dir.is_link) {
char buf[1024];
char *target;
int rc = readlink(dir.path, buf, sizeof(buf));
if (rc < 0 || rc == sizeof(buf))
continue;
buf[rc] = 0;
target = path_absolute_cwd(buf, dirname);
if (points_within(target, root)) {
/* symlink points withing the root */
d_print("%s -> %s points within %s. ignoring\n",
dir.path, target, root);
free(target);
continue;
}
free(target);
}
size = strlen(name) + 1;
ent = xmalloc(sizeof(struct dir_entry) + size);
ent->mode = dir.st.st_mode;
memcpy(ent->name, name, size);
ptr_array_add(&array, ent);
}
dir_close(&dir);
if (jd->add == play_queue_prepend) {
ptr_array_sort(&array, dir_entry_cmp_reverse);
} else {
ptr_array_sort(&array, dir_entry_cmp);
}
ents = array.ptrs;
for (i = 0; i < array.count; i++) {
if (!worker_cancelling()) {
/* abuse dir.path because
* - it already contains dirname + '/'
* - it is guaranteed to be large enough
*/
int len = strlen(ents[i]->name);
memcpy(dir.path + dir.len, ents[i]->name, len + 1);
if (S_ISDIR(ents[i]->mode)) {
add_dir(dir.path, root);
} else {
add_file(dir.path, 0);
}
}
free(ents[i]);
}
free(ents);
}
static int handle_line(void *data, const char *line)
{
if (worker_cancelling())
return 1;
if (is_http_url(line) || is_cue_url(line)) {
add_url(line);
} else {
char *absolute = path_absolute_cwd(line, data);
add_file(absolute, 0);
free(absolute);
}
return 0;
}
static void add_pl(const char *filename)
{
char *buf;
int size, reverse;
buf = mmap_file(filename, &size);
if (size == -1)
return;
if (buf) {
char *cwd = xstrjoin(filename, "/..");
/* beautiful hack */
reverse = jd->add == play_queue_prepend;
cmus_playlist_for_each(buf, size, reverse, handle_line, cwd);
free(cwd);
munmap(buf, size);
}
}
void do_add_job(void *data)
{
jd = data;
switch (jd->type) {
case FILE_TYPE_URL:
add_url(jd->name);
break;
case FILE_TYPE_CDDA:
add_cdda(jd->name);
break;
case FILE_TYPE_PL:
add_pl(jd->name);
break;
case FILE_TYPE_DIR:
add_dir(jd->name, jd->name);
break;
case FILE_TYPE_FILE:
add_file(jd->name, jd->force);
break;
case FILE_TYPE_INVALID:
break;
}
if (ti_buffer_fill)
flush_ti_buffer();
jd = NULL;
}
void free_add_job(void *data)
{
struct add_data *d = data;
free(d->name);
free(d);
}
void do_update_job(void *data)
{
struct update_data *d = data;
int i;
for (i = 0; i < d->used; i++) {
struct track_info *ti = d->ti[i];
struct stat s;
int rc;
/* stat follows symlinks, lstat does not */
rc = stat(ti->filename, &s);
if (rc || d->force || ti->mtime != s.st_mtime || ti->duration == 0) {
int force = ti->duration == 0;
editable_lock();
lib_remove(ti);
editable_unlock();
cache_lock();
cache_remove_ti(ti);
cache_unlock();
if (!is_cue_url(ti->filename) && !is_http_url(ti->filename) && rc) {
d_print("removing dead file %s\n", ti->filename);
} else {
if (ti->mtime != s.st_mtime)
d_print("mtime changed: %s\n", ti->filename);
cmus_add(lib_add_track, ti->filename, FILE_TYPE_FILE, JOB_TYPE_LIB, force);
}
}
track_info_unref(ti);
}
}
void free_update_job(void *data)
{
struct update_data *d = data;
free(d->ti);
free(d);
}
void do_update_cache_job(void *data)
{
struct update_cache_data *d = data;
struct track_info **tis;
int i, count;
cache_lock();
tis = cache_refresh(&count, d->force);
editable_lock();
player_info_lock();
for (i = 0; i < count; i++) {
struct track_info *new, *old = tis[i];
if (!old)
continue;
new = old->next;
if (lib_remove(old) && new)
lib_add_track(new);
editable_update_track(&pl_editable, old, new);
editable_update_track(&pq_editable, old, new);
if (player_info.ti == old && new) {
track_info_ref(new);
player_file_changed(new);
}
track_info_unref(old);
if (new)
track_info_unref(new);
}
player_info_unlock();
editable_unlock();
cache_unlock();
free(tis);
}
void free_update_cache_job(void *data)
{
free(data);
}