diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/update.c | 787 | ||||
| -rw-r--r-- | src/update_internal.h | 67 | ||||
| -rw-r--r-- | src/update_queue.c | 55 | ||||
| -rw-r--r-- | src/update_remove.c | 93 | ||||
| -rw-r--r-- | src/update_walk.c | 755 |
5 files changed, 987 insertions, 770 deletions
diff --git a/src/update.c b/src/update.c index a85f883c6..a8d4f3e10 100644 --- a/src/update.c +++ b/src/update.c @@ -17,45 +17,23 @@ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ +#include "update_internal.h" #include "update.h" #include "database.h" -#include "directory.h" -#include "song.h" -#include "uri.h" #include "mapper.h" -#include "path.h" -#include "decoder_list.h" #include "archive_list.h" #include "playlist.h" #include "event_pipe.h" #include "notify.h" #include "update.h" #include "idle.h" -#include "conf.h" #include "stats.h" #include "main.h" #include "config.h" -#ifdef ENABLE_SQLITE -#include "sticker.h" -#include "song_sticker.h" -#endif - #include <glib.h> #include <assert.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <dirent.h> -#include <string.h> -#include <stdlib.h> -#include <errno.h> - -#include "decoder_plugin.h" - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "update" static enum update_progress { UPDATE_PROGRESS_IDLE = 0, @@ -65,32 +43,14 @@ static enum update_progress { static bool modified; -/* make this dynamic?, or maybe this is big enough... */ -static char *update_paths[32]; -static size_t update_paths_nr; - static GThread *update_thr; static const unsigned update_task_id_max = 1 << 15; static unsigned update_task_id; -static struct song *delete; - /** used by the main thread to notify the update thread */ -static struct notify update_notify; - -#ifndef WIN32 - -enum { - DEFAULT_FOLLOW_INSIDE_SYMLINKS = true, - DEFAULT_FOLLOW_OUTSIDE_SYMLINKS = true, -}; - -static bool follow_inside_symlinks; -static bool follow_outside_symlinks; - -#endif +struct notify update_notify; unsigned isUpdatingDB(void) @@ -98,688 +58,11 @@ isUpdatingDB(void) return (progress != UPDATE_PROGRESS_IDLE) ? update_task_id : 0; } -static void -directory_set_stat(struct directory *dir, const struct stat *st) -{ - dir->inode = st->st_ino; - dir->device = st->st_dev; - dir->stat = 1; -} - -static void -delete_song(struct directory *dir, struct song *del) -{ - /* first, prevent traversers in main task from getting this */ - songvec_delete(&dir->songs, del); - - /* now take it out of the playlist (in the main_task) */ - assert(!delete); - delete = del; - event_pipe_emit(PIPE_EVENT_DELETE); - - do { - notify_wait(&update_notify); - } while (delete != NULL); - - /* finally, all possible references gone, free it */ - song_free(del); -} - -static int -delete_each_song(struct song *song, G_GNUC_UNUSED void *data) -{ - struct directory *directory = data; - assert(song->parent == directory); - delete_song(directory, song); - return 0; -} - -static void -delete_directory(struct directory *directory); - -/** - * Recursively remove all sub directories and songs from a directory, - * leaving an empty directory. - */ -static void -clear_directory(struct directory *directory) -{ - int i; - - for (i = directory->children.nr; --i >= 0;) - delete_directory(directory->children.base[i]); - - assert(directory->children.nr == 0); - - songvec_for_each(&directory->songs, delete_each_song, directory); -} - -/** - * Recursively free a directory and all its contents. - */ -static void -delete_directory(struct directory *directory) -{ - assert(directory->parent != NULL); - - clear_directory(directory); - - dirvec_delete(&directory->parent->children, directory); - directory_free(directory); -} - -static void -delete_name_in(struct directory *parent, const char *name) -{ - struct directory *directory = directory_get_child(parent, name); - struct song *song = songvec_find(&parent->songs, name); - - if (directory != NULL) { - delete_directory(directory); - modified = true; - } - - if (song != NULL) { - delete_song(parent, song); - modified = true; - } -} - -/* passed to songvec_for_each */ -static int -delete_song_if_removed(struct song *song, void *_data) -{ - struct directory *dir = _data; - char *path; - struct stat st; - - if ((path = map_song_fs(song)) == NULL || - stat(path, &st) < 0 || !S_ISREG(st.st_mode)) { - delete_song(dir, song); - modified = true; - } - - g_free(path); - return 0; -} - -static bool -directory_exists(const struct directory *directory) -{ - char *path_fs; - GFileTest test; - bool exists; - - path_fs = map_directory_fs(directory); - if (path_fs == NULL) - /* invalid path: cannot exist */ - return false; - - test = directory->device == DEVICE_INARCHIVE || - directory->device == DEVICE_CONTAINER - ? G_FILE_TEST_IS_REGULAR - : G_FILE_TEST_IS_DIR; - - exists = g_file_test(path_fs, test); - g_free(path_fs); - - return exists; -} - -static void -removeDeletedFromDirectory(struct directory *directory) -{ - int i; - struct dirvec *dv = &directory->children; - - for (i = dv->nr; --i >= 0; ) { - if (directory_exists(dv->base[i])) - continue; - - g_debug("removing directory: %s", dv->base[i]->path); - delete_directory(dv->base[i]); - modified = true; - } - - songvec_for_each(&directory->songs, delete_song_if_removed, directory); -} - -static int -stat_directory(const struct directory *directory, struct stat *st) -{ - char *path_fs; - int ret; - - path_fs = map_directory_fs(directory); - if (path_fs == NULL) - return -1; - ret = stat(path_fs, st); - g_free(path_fs); - return ret; -} - -static int -stat_directory_child(const struct directory *parent, const char *name, - struct stat *st) -{ - char *path_fs; - int ret; - - path_fs = map_directory_child_fs(parent, name); - if (path_fs == NULL) - return -1; - - ret = stat(path_fs, st); - g_free(path_fs); - return ret; -} - -static int -statDirectory(struct directory *dir) -{ - struct stat st; - - if (stat_directory(dir, &st) < 0) - return -1; - - directory_set_stat(dir, &st); - - return 0; -} - -static int -inodeFoundInParent(struct directory *parent, ino_t inode, dev_t device) -{ - while (parent) { - if (!parent->stat && statDirectory(parent) < 0) - return -1; - if (parent->inode == inode && parent->device == device) { - g_debug("recursive directory found"); - return 1; - } - parent = parent->parent; - } - - return 0; -} - -static struct directory * -make_subdir(struct directory *parent, const char *name) -{ - struct directory *directory; - - directory = directory_get_child(parent, name); - if (directory == NULL) { - char *path; - - if (directory_is_root(parent)) - path = NULL; - else - name = path = g_strconcat(directory_get_path(parent), - "/", name, NULL); - - directory = directory_new_child(parent, name); - g_free(path); - } - - return directory; -} - -#ifdef ENABLE_ARCHIVE -static void -update_archive_tree(struct directory *directory, char *name) -{ - struct directory *subdir; - struct song *song; - char *tmp; - - tmp = strchr(name, '/'); - if (tmp) { - *tmp = 0; - //add dir is not there already - if ((subdir = dirvec_find(&directory->children, name)) == NULL) { - //create new directory - subdir = make_subdir(directory, name); - subdir->device = DEVICE_INARCHIVE; - } - //create directories first - update_archive_tree(subdir, tmp+1); - } else { - if (strlen(name) == 0) { - g_warning("archive returned directory only"); - return; - } - //add file - song = songvec_find(&directory->songs, name); - if (song == NULL) { - song = song_file_load(name, directory); - if (song != NULL) { - songvec_add(&directory->songs, song); - modified = true; - g_message("added %s/%s", - directory_get_path(directory), name); - } - } - } -} - -/** - * Updates the file listing from an archive file. - * - * @param parent the parent directory the archive file resides in - * @param name the UTF-8 encoded base name of the archive file - * @param st stat() information on the archive file - * @param plugin the archive plugin which fits this archive type - */ -static void -update_archive_file(struct directory *parent, const char *name, - const struct stat *st, - const struct archive_plugin *plugin) -{ - char *path_fs; - struct archive_file *file; - struct directory *directory; - char *filepath; - - directory = dirvec_find(&parent->children, name); - if (directory != NULL && directory->mtime == st->st_mtime) - /* MPD has already scanned the archive, and it hasn't - changed since - don't consider updating it */ - return; - - path_fs = map_directory_child_fs(parent, name); - - /* open archive */ - file = plugin->open(path_fs); - if (file == NULL) { - g_warning("unable to open archive %s", path_fs); - g_free(path_fs); - return; - } - - g_debug("archive %s opened", path_fs); - g_free(path_fs); - - if (directory == NULL) { - g_debug("creating archive directory: %s", name); - directory = make_subdir(parent, name); - /* mark this directory as archive (we use device for - this) */ - directory->device = DEVICE_INARCHIVE; - } - - directory->mtime = st->st_mtime; - - plugin->scan_reset(file); - - while ((filepath = plugin->scan_next(file)) != NULL) { - /* split name into directory and file */ - g_debug("adding archive file: %s", filepath); - update_archive_tree(directory, filepath); - } - - plugin->close(file); -} -#endif - -static bool -update_container_file( struct directory* directory, - const char* name, - const struct stat* st, - const struct decoder_plugin* plugin) -{ - char* vtrack = NULL; - unsigned int tnum = 0; - char* pathname = map_directory_child_fs(directory, name); - struct directory* contdir = dirvec_find(&directory->children, name); - - // directory exists already - if (contdir != NULL) - { - // modification time not eq. file mod. time - if (contdir->mtime != st->st_mtime) - { - g_message("removing container file: %s", pathname); - - delete_directory(contdir); - contdir = NULL; - - modified = true; - } - else { - g_free(pathname); - return true; - } - } - - contdir = make_subdir(directory, name); - contdir->mtime = st->st_mtime; - contdir->device = DEVICE_CONTAINER; - - while ((vtrack = plugin->container_scan(pathname, ++tnum)) != NULL) - { - struct song* song = song_file_new(vtrack, contdir); - if (song == NULL) - return true; - - // shouldn't be necessary but it's there.. - song->mtime = st->st_mtime; - - song->tag = plugin->tag_dup(map_directory_child_fs(contdir, vtrack)); - - songvec_add(&contdir->songs, song); - song = NULL; - - modified = true; - - g_free(vtrack); - } - - g_free(pathname); - - if (tnum == 1) - { - delete_directory(contdir); - return false; - } - else - return true; -} - -static void -update_regular_file(struct directory *directory, - const char *name, const struct stat *st) -{ - const char *suffix = uri_get_suffix(name); - const struct decoder_plugin* plugin; -#ifdef ENABLE_ARCHIVE - const struct archive_plugin *archive; -#endif - if (suffix == NULL) - return; - - if ((plugin = decoder_plugin_from_suffix(suffix, false)) != NULL) - { - struct song* song = songvec_find(&directory->songs, name); - - if (!(song != NULL && st->st_mtime == song->mtime) && - plugin->container_scan != NULL) - { - if (update_container_file(directory, name, st, plugin)) - { - if (song != NULL) - delete_song(directory, song); - - return; - } - } - - if (song == NULL) { - song = song_file_load(name, directory); - if (song == NULL) - return; - - songvec_add(&directory->songs, song); - modified = true; - g_message("added %s/%s", - directory_get_path(directory), name); - } else if (st->st_mtime != song->mtime) { - g_message("updating %s/%s", - directory_get_path(directory), name); - if (!song_file_update(song)) - delete_song(directory, song); - modified = true; - } -#ifdef ENABLE_ARCHIVE - } else if ((archive = archive_plugin_from_suffix(suffix))) { - update_archive_file(directory, name, st, archive); -#endif - } -} - -static bool -updateDirectory(struct directory *directory, const struct stat *st); - -static void -updateInDirectory(struct directory *directory, - const char *name, const struct stat *st) -{ - assert(strchr(name, '/') == NULL); - - if (S_ISREG(st->st_mode)) { - update_regular_file(directory, name, st); - } else if (S_ISDIR(st->st_mode)) { - struct directory *subdir; - bool ret; - - if (inodeFoundInParent(directory, st->st_ino, st->st_dev)) - return; - - subdir = make_subdir(directory, name); - assert(directory == subdir->parent); - - ret = updateDirectory(subdir, st); - if (!ret) - delete_directory(subdir); - } else { - g_debug("update: %s is not a directory, archive or music", name); - } -} - -/* we don't look at "." / ".." nor files with newlines in their name */ -static bool skip_path(const char *path) -{ - return (path[0] == '.' && path[1] == 0) || - (path[0] == '.' && path[1] == '.' && path[2] == 0) || - strchr(path, '\n') != NULL; -} - -static bool -skip_symlink(const struct directory *directory, const char *utf8_name) -{ -#ifndef WIN32 - char buffer[MPD_PATH_MAX]; - char *path_fs; - const char *p; - ssize_t ret; - - path_fs = map_directory_child_fs(directory, utf8_name); - if (path_fs == NULL) - return true; - - ret = readlink(path_fs, buffer, sizeof(buffer)); - g_free(path_fs); - if (ret < 0) - /* don't skip if this is not a symlink */ - return errno != EINVAL; - - if (!follow_inside_symlinks && !follow_outside_symlinks) { - /* ignore all symlinks */ - return true; - } else if (follow_inside_symlinks && follow_outside_symlinks) { - /* consider all symlinks */ - return false; - } - - if (buffer[0] == '/') - return !follow_outside_symlinks; - - p = buffer; - while (*p == '.') { - if (p[1] == '.' && p[2] == '/') { - /* "../" moves to parent directory */ - directory = directory->parent; - if (directory == NULL) { - /* we have moved outside the music - directory - skip this symlink - if such symlinks are not allowed */ - return !follow_outside_symlinks; - } - p += 3; - } else if (p[1] == '/') - /* eliminate "./" */ - p += 2; - else - break; - } - - /* we are still in the music directory, so this symlink points - to a song which is already in the database - skip according - to the follow_inside_symlinks param*/ - return !follow_inside_symlinks; -#else - /* no symlink checking on WIN32 */ - - (void)directory; - (void)utf8_name; - - return false; -#endif -} - -static bool -updateDirectory(struct directory *directory, const struct stat *st) -{ - DIR *dir; - struct dirent *ent; - char *path_fs; - - assert(S_ISDIR(st->st_mode)); - - directory_set_stat(directory, st); - - path_fs = map_directory_fs(directory); - if (path_fs == NULL) - return false; - - dir = opendir(path_fs); - if (!dir) { - g_warning("Failed to open directory %s: %s", - path_fs, g_strerror(errno)); - g_free(path_fs); - return false; - } - - g_free(path_fs); - - removeDeletedFromDirectory(directory); - - while ((ent = readdir(dir))) { - char *utf8; - struct stat st2; - - if (skip_path(ent->d_name)) - continue; - - utf8 = fs_charset_to_utf8(ent->d_name); - if (utf8 == NULL || skip_symlink(directory, utf8)) { - g_free(utf8); - continue; - } - - if (stat_directory_child(directory, utf8, &st2) == 0) - updateInDirectory(directory, utf8, &st2); - else - delete_name_in(directory, utf8); - - g_free(utf8); - } - - closedir(dir); - - directory->mtime = st->st_mtime; - - return true; -} - -static struct directory * -directory_make_child_checked(struct directory *parent, const char *path) -{ - struct directory *directory; - char *base; - struct stat st; - struct song *conflicting; - - directory = directory_get_child(parent, path); - if (directory != NULL) - return directory; - - base = g_path_get_basename(path); - - if (stat_directory_child(parent, base, &st) < 0 || - inodeFoundInParent(parent, st.st_ino, st.st_dev)) { - g_free(base); - return NULL; - } - - /* if we're adding directory paths, make sure to delete filenames - with potentially the same name */ - conflicting = songvec_find(&parent->songs, base); - if (conflicting) - delete_song(parent, conflicting); - - g_free(base); - - directory = directory_new_child(parent, path); - directory_set_stat(directory, &st); - return directory; -} - -static struct directory * -addParentPathToDB(const char *utf8path) -{ - struct directory *directory = db_get_root(); - char *duplicated = g_strdup(utf8path); - char *slash = duplicated; - - while ((slash = strchr(slash, '/')) != NULL) { - *slash = 0; - - directory = directory_make_child_checked(directory, - duplicated); - if (directory == NULL || slash == NULL) - break; - - *slash++ = '/'; - } - - g_free(duplicated); - return directory; -} - -static void -updatePath(const char *path) -{ - struct directory *parent; - char *name; - struct stat st; - - parent = addParentPathToDB(path); - if (parent == NULL) - return; - - name = g_path_get_basename(path); - - if (stat_directory_child(parent, name, &st) == 0) - updateInDirectory(parent, name, &st); - else - delete_name_in(parent, name); - - g_free(name); -} - static void * update_task(void *_path) { - if (_path != NULL && !isRootDirectory(_path)) { - updatePath((char *)_path); - } else { - struct directory *directory = db_get_root(); - struct stat st; - - if (stat_directory(directory, &st) == 0) - updateDirectory(directory, &st); - } + const char *path = _path; + modified = update_walk(path); g_free(_path); if (modified || !db_exists()) @@ -818,15 +101,11 @@ update_enqueue(const char *path) return 0; if (progress != UPDATE_PROGRESS_IDLE) { - unsigned next_task_id; - - if (update_paths_nr == G_N_ELEMENTS(update_paths)) + unsigned next_task_id = + update_queue_push(path, update_task_id); + if (next_task_id == 0) return 0; - assert(update_paths_nr < G_N_ELEMENTS(update_paths)); - update_paths[update_paths_nr++] = g_strdup(path); - next_task_id = update_task_id + update_paths_nr; - return next_task_id > update_task_id_max ? 1 : next_task_id; } @@ -838,37 +117,12 @@ update_enqueue(const char *path) } /** - * Safely delete a song from the database. This must be done in the - * main task, to be sure that there is no pointer left to it. - */ -static void song_delete_event(void) -{ - char *uri; - - assert(progress == UPDATE_PROGRESS_RUNNING); - assert(delete != NULL); - - uri = song_get_uri(delete); - g_debug("removing: %s", uri); - g_free(uri); - -#ifdef ENABLE_SQLITE - /* if the song has a sticker, delete it */ - if (sticker_enabled()) - sticker_song_delete(delete); -#endif - - playlist_delete_song(&g_playlist, delete); - delete = NULL; - - notify_signal(&update_notify); -} - -/** * Called in the main thread after the database update is finished. */ static void update_finished_event(void) { + char *path; + assert(progress == UPDATE_PROGRESS_DONE); g_thread_join(update_thr); @@ -881,11 +135,9 @@ static void update_finished_event(void) idle_add(IDLE_DATABASE); } - if (update_paths_nr) { + path = update_queue_shift(); + if (path != NULL) { /* schedule the next path */ - char *path = update_paths[0]; - memmove(&update_paths[0], &update_paths[1], - --update_paths_nr * sizeof(char *)); spawn_update_task(path); g_free(path); } else { @@ -897,23 +149,18 @@ static void update_finished_event(void) void update_global_init(void) { -#ifndef WIN32 - follow_inside_symlinks = - config_get_bool(CONF_FOLLOW_INSIDE_SYMLINKS, - DEFAULT_FOLLOW_INSIDE_SYMLINKS); - - follow_outside_symlinks = - config_get_bool(CONF_FOLLOW_OUTSIDE_SYMLINKS, - DEFAULT_FOLLOW_OUTSIDE_SYMLINKS); -#endif - notify_init(&update_notify); - event_pipe_register(PIPE_EVENT_DELETE, song_delete_event); event_pipe_register(PIPE_EVENT_UPDATE, update_finished_event); + + update_remove_global_init(); + update_walk_global_init(); } void update_global_finish(void) { + update_walk_global_finish(); + update_remove_global_finish(); + notify_deinit(&update_notify); } diff --git a/src/update_internal.h b/src/update_internal.h new file mode 100644 index 000000000..b22b3c6b2 --- /dev/null +++ b/src/update_internal.h @@ -0,0 +1,67 @@ +/* + * Copyright (C) 2003-2009 The Music Player Daemon Project + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_UPDATE_INTERNAL_H +#define MPD_UPDATE_INTERNAL_H + +#include <stdbool.h> + +#undef G_LOG_DOMAIN +#define G_LOG_DOMAIN "update" + +struct stat; +struct song; +struct directory; + +/** used by the main thread to notify the update thread */ +extern struct notify update_notify; + +unsigned +update_queue_push(const char *path, unsigned base); + +char * +update_queue_shift(void); + +void +update_walk_global_init(void); + +void +update_walk_global_finish(void); + +/** + * Returns true if the database was modified. + */ +bool +update_walk(const char *path); + +void +update_remove_global_init(void); + +void +update_remove_global_finish(void); + +/** + * Sends a signal to the main thread which will in turn remove the + * song: from the sticker database and from the playlist. This + * serialized access is implemented to avoid excessive locking. + */ +void +update_remove_song(const struct song *song); + +#endif diff --git a/src/update_queue.c b/src/update_queue.c new file mode 100644 index 000000000..ef1753c21 --- /dev/null +++ b/src/update_queue.c @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2003-2009 The Music Player Daemon Project + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "update_internal.h" + +#include <glib.h> + +#include <assert.h> +#include <string.h> + +/* make this dynamic?, or maybe this is big enough... */ +static char *update_paths[32]; +static size_t update_paths_nr; + +unsigned +update_queue_push(const char *path, unsigned base) +{ + assert(update_paths_nr <= G_N_ELEMENTS(update_paths)); + + if (update_paths_nr == G_N_ELEMENTS(update_paths)) + return 0; + + update_paths[update_paths_nr++] = g_strdup(path); + return base + update_paths_nr; +} + +char * +update_queue_shift(void) +{ + char *path; + + if (update_paths_nr == 0) + return NULL; + + path = update_paths[0]; + memmove(&update_paths[0], &update_paths[1], + --update_paths_nr * sizeof(char *)); + return path; +} diff --git a/src/update_remove.c b/src/update_remove.c new file mode 100644 index 000000000..bf3d88db6 --- /dev/null +++ b/src/update_remove.c @@ -0,0 +1,93 @@ +/* + * Copyright (C) 2003-2009 The Music Player Daemon Project + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "update_internal.h" +#include "notify.h" +#include "event_pipe.h" +#include "song.h" +#include "playlist.h" + +#ifdef ENABLE_SQLITE +#include "sticker.h" +#include "song_sticker.h" +#endif + +#include <glib.h> + +#include <assert.h> + +static const struct song *removed_song; + +static struct notify remove_notify; + +/** + * Safely remove a song from the database. This must be done in the + * main task, to be sure that there is no pointer left to it. + */ +static void +song_remove_event(void) +{ + char *uri; + + assert(removed_song != NULL); + + uri = song_get_uri(removed_song); + g_debug("removing: %s", uri); + g_free(uri); + +#ifdef ENABLE_SQLITE + /* if the song has a sticker, remove it */ + if (sticker_enabled()) + sticker_song_remove(song); +#endif + + playlist_delete_song(&g_playlist, removed_song); + removed_song = NULL; + + notify_signal(&remove_notify); +} + +void +update_remove_global_init(void) +{ + notify_init(&remove_notify); + + event_pipe_register(PIPE_EVENT_DELETE, song_remove_event); +} + +void +update_remove_global_finish(void) +{ + notify_deinit(&remove_notify); +} + +void +update_remove_song(const struct song *song) +{ + assert(removed_song == NULL); + + removed_song = song; + + event_pipe_emit(PIPE_EVENT_DELETE); + + do { + notify_wait(&remove_notify); + } while (removed_song != NULL); + +} diff --git a/src/update_walk.c b/src/update_walk.c new file mode 100644 index 000000000..967795cff --- /dev/null +++ b/src/update_walk.c @@ -0,0 +1,755 @@ +/* + * Copyright (C) 2003-2009 The Music Player Daemon Project + * 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., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "update_internal.h" +#include "database.h" +#include "directory.h" +#include "song.h" +#include "uri.h" +#include "mapper.h" +#include "path.h" +#include "decoder_list.h" +#include "decoder_plugin.h" +#include "conf.h" + +#include <glib.h> + +#include <assert.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <dirent.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> + +static bool modified; + +#ifndef WIN32 + +enum { + DEFAULT_FOLLOW_INSIDE_SYMLINKS = true, + DEFAULT_FOLLOW_OUTSIDE_SYMLINKS = true, +}; + +static bool follow_inside_symlinks; +static bool follow_outside_symlinks; + +#endif + +void +update_walk_global_init(void) +{ +#ifndef WIN32 + follow_inside_symlinks = + config_get_bool(CONF_FOLLOW_INSIDE_SYMLINKS, + DEFAULT_FOLLOW_INSIDE_SYMLINKS); + + follow_outside_symlinks = + config_get_bool(CONF_FOLLOW_OUTSIDE_SYMLINKS, + DEFAULT_FOLLOW_OUTSIDE_SYMLINKS); +#endif +} + +void +update_walk_global_finish(void) +{ +} + +static void +directory_set_stat(struct directory *dir, const struct stat *st) +{ + dir->inode = st->st_ino; + dir->device = st->st_dev; + dir->stat = 1; +} + +static void +delete_song(struct directory *dir, struct song *del) +{ + /* first, prevent traversers in main task from getting this */ + songvec_delete(&dir->songs, del); + + /* now take it out of the playlist (in the main_task) */ + update_remove_song(del); + + /* finally, all possible references gone, free it */ + song_free(del); +} + +static int +delete_each_song(struct song *song, G_GNUC_UNUSED void *data) +{ + struct directory *directory = data; + assert(song->parent == directory); + delete_song(directory, song); + return 0; +} + +static void +delete_directory(struct directory *directory); + +/** + * Recursively remove all sub directories and songs from a directory, + * leaving an empty directory. + */ +static void +clear_directory(struct directory *directory) +{ + int i; + + for (i = directory->children.nr; --i >= 0;) + delete_directory(directory->children.base[i]); + + assert(directory->children.nr == 0); + + songvec_for_each(&directory->songs, delete_each_song, directory); +} + +/** + * Recursively free a directory and all its contents. + */ +static void +delete_directory(struct directory *directory) +{ + assert(directory->parent != NULL); + + clear_directory(directory); + + dirvec_delete(&directory->parent->children, directory); + directory_free(directory); +} + +static void +delete_name_in(struct directory *parent, const char *name) +{ + struct directory *directory = directory_get_child(parent, name); + struct song *song = songvec_find(&parent->songs, name); + + if (directory != NULL) { + delete_directory(directory); + modified = true; + } + + if (song != NULL) { + delete_song(parent, song); + modified = true; + } +} + +/* passed to songvec_for_each */ +static int +delete_song_if_removed(struct song *song, void *_data) +{ + struct directory *dir = _data; + char *path; + struct stat st; + + if ((path = map_song_fs(song)) == NULL || + stat(path, &st) < 0 || !S_ISREG(st.st_mode)) { + delete_song(dir, song); + modified = true; + } + + g_free(path); + return 0; +} + +static bool +directory_exists(const struct directory *directory) +{ + char *path_fs; + GFileTest test; + bool exists; + + path_fs = map_directory_fs(directory); + if (path_fs == NULL) + /* invalid path: cannot exist */ + return false; + + test = directory->device == DEVICE_INARCHIVE || + directory->device == DEVICE_CONTAINER + ? G_FILE_TEST_IS_REGULAR + : G_FILE_TEST_IS_DIR; + + exists = g_file_test(path_fs, test); + g_free(path_fs); + + return exists; +} + +static void +removeDeletedFromDirectory(struct directory *directory) +{ + int i; + struct dirvec *dv = &directory->children; + + for (i = dv->nr; --i >= 0; ) { + if (directory_exists(dv->base[i])) + continue; + + g_debug("removing directory: %s", dv->base[i]->path); + delete_directory(dv->base[i]); + modified = true; + } + + songvec_for_each(&directory->songs, delete_song_if_removed, directory); +} + +static int +stat_directory(const struct directory *directory, struct stat *st) +{ + char *path_fs; + int ret; + + path_fs = map_directory_fs(directory); + if (path_fs == NULL) + return -1; + ret = stat(path_fs, st); + g_free(path_fs); + return ret; +} + +static int +stat_directory_child(const struct directory *parent, const char *name, + struct stat *st) +{ + char *path_fs; + int ret; + + path_fs = map_directory_child_fs(parent, name); + if (path_fs == NULL) + return -1; + + ret = stat(path_fs, st); + g_free(path_fs); + return ret; +} + +static int +statDirectory(struct directory *dir) +{ + struct stat st; + + if (stat_directory(dir, &st) < 0) + return -1; + + directory_set_stat(dir, &st); + + return 0; +} + +static int +inodeFoundInParent(struct directory *parent, ino_t inode, dev_t device) +{ + while (parent) { + if (!parent->stat && statDirectory(parent) < 0) + return -1; + if (parent->inode == inode && parent->device == device) { + g_debug("recursive directory found"); + return 1; + } + parent = parent->parent; + } + + return 0; +} + +static struct directory * +make_subdir(struct directory *parent, const char *name) +{ + struct directory *directory; + + directory = directory_get_child(parent, name); + if (directory == NULL) { + char *path; + + if (directory_is_root(parent)) + path = NULL; + else + name = path = g_strconcat(directory_get_path(parent), + "/", name, NULL); + + directory = directory_new_child(parent, name); + g_free(path); + } + + return directory; +} + +#ifdef ENABLE_ARCHIVE +static void +update_archive_tree(struct directory *directory, char *name) +{ + struct directory *subdir; + struct song *song; + char *tmp; + + tmp = strchr(name, '/'); + if (tmp) { + *tmp = 0; + //add dir is not there already + if ((subdir = dirvec_find(&directory->children, name)) == NULL) { + //create new directory + subdir = make_subdir(directory, name); + subdir->device = DEVICE_INARCHIVE; + } + //create directories first + update_archive_tree(subdir, tmp+1); + } else { + if (strlen(name) == 0) { + g_warning("archive returned directory only"); + return; + } + //add file + song = songvec_find(&directory->songs, name); + if (song == NULL) { + song = song_file_load(name, directory); + if (song != NULL) { + songvec_add(&directory->songs, song); + modified = true; + g_message("added %s/%s", + directory_get_path(directory), name); + } + } + } +} + +/** + * Updates the file listing from an archive file. + * + * @param parent the parent directory the archive file resides in + * @param name the UTF-8 encoded base name of the archive file + * @param st stat() information on the archive file + * @param plugin the archive plugin which fits this archive type + */ +static void +update_archive_file(struct directory *parent, const char *name, + const struct stat *st, + const struct archive_plugin *plugin) +{ + char *path_fs; + struct archive_file *file; + struct directory *directory; + char *filepath; + + directory = dirvec_find(&parent->children, name); + if (directory != NULL && directory->mtime == st->st_mtime) + /* MPD has already scanned the archive, and it hasn't + changed since - don't consider updating it */ + return; + + path_fs = map_directory_child_fs(parent, name); + + /* open archive */ + file = plugin->open(path_fs); + if (file == NULL) { + g_warning("unable to open archive %s", path_fs); + g_free(path_fs); + return; + } + + g_debug("archive %s opened", path_fs); + g_free(path_fs); + + if (directory == NULL) { + g_debug("creating archive directory: %s", name); + directory = make_subdir(parent, name); + /* mark this directory as archive (we use device for + this) */ + directory->device = DEVICE_INARCHIVE; + } + + directory->mtime = st->st_mtime; + + plugin->scan_reset(file); + + while ((filepath = plugin->scan_next(file)) != NULL) { + /* split name into directory and file */ + g_debug("adding archive file: %s", filepath); + update_archive_tree(directory, filepath); + } + + plugin->close(file); +} +#endif + +static bool +update_container_file( struct directory* directory, + const char* name, + const struct stat* st, + const struct decoder_plugin* plugin) +{ + char* vtrack = NULL; + unsigned int tnum = 0; + char* pathname = map_directory_child_fs(directory, name); + struct directory* contdir = dirvec_find(&directory->children, name); + + // directory exists already + if (contdir != NULL) + { + // modification time not eq. file mod. time + if (contdir->mtime != st->st_mtime) + { + g_message("removing container file: %s", pathname); + + delete_directory(contdir); + contdir = NULL; + + modified = true; + } + else { + g_free(pathname); + return true; + } + } + + contdir = make_subdir(directory, name); + contdir->mtime = st->st_mtime; + contdir->device = DEVICE_CONTAINER; + + while ((vtrack = plugin->container_scan(pathname, ++tnum)) != NULL) + { + struct song* song = song_file_new(vtrack, contdir); + if (song == NULL) + return true; + + // shouldn't be necessary but it's there.. + song->mtime = st->st_mtime; + + song->tag = plugin->tag_dup(map_directory_child_fs(contdir, vtrack)); + + songvec_add(&contdir->songs, song); + song = NULL; + + modified = true; + + g_free(vtrack); + } + + g_free(pathname); + + if (tnum == 1) + { + delete_directory(contdir); + return false; + } + else + return true; +} + +static void +update_regular_file(struct directory *directory, + const char *name, const struct stat *st) +{ + const char *suffix = uri_get_suffix(name); + const struct decoder_plugin* plugin; +#ifdef ENABLE_ARCHIVE + const struct archive_plugin *archive; +#endif + if (suffix == NULL) + return; + + if ((plugin = decoder_plugin_from_suffix(suffix, false)) != NULL) + { + struct song* song = songvec_find(&directory->songs, name); + + if (!(song != NULL && st->st_mtime == song->mtime) && + plugin->container_scan != NULL) + { + if (update_container_file(directory, name, st, plugin)) + { + if (song != NULL) + delete_song(directory, song); + + return; + } + } + + if (song == NULL) { + song = song_file_load(name, directory); + if (song == NULL) + return; + + songvec_add(&directory->songs, song); + modified = true; + g_message("added %s/%s", + directory_get_path(directory), name); + } else if (st->st_mtime != song->mtime) { + g_message("updating %s/%s", + directory_get_path(directory), name); + if (!song_file_update(song)) + delete_song(directory, song); + modified = true; + } +#ifdef ENABLE_ARCHIVE + } else if ((archive = archive_plugin_from_suffix(suffix))) { + update_archive_file(directory, name, st, archive); +#endif + } +} + +static bool +updateDirectory(struct directory *directory, const struct stat *st); + +static void +updateInDirectory(struct directory *directory, + const char *name, const struct stat *st) +{ + assert(strchr(name, '/') == NULL); + + if (S_ISREG(st->st_mode)) { + update_regular_file(directory, name, st); + } else if (S_ISDIR(st->st_mode)) { + struct directory *subdir; + bool ret; + + if (inodeFoundInParent(directory, st->st_ino, st->st_dev)) + return; + + subdir = make_subdir(directory, name); + assert(directory == subdir->parent); + + ret = updateDirectory(subdir, st); + if (!ret) + delete_directory(subdir); + } else { + g_debug("update: %s is not a directory, archive or music", name); + } +} + +/* we don't look at "." / ".." nor files with newlines in their name */ +static bool skip_path(const char *path) +{ + return (path[0] == '.' && path[1] == 0) || + (path[0] == '.' && path[1] == '.' && path[2] == 0) || + strchr(path, '\n') != NULL; +} + +static bool +skip_symlink(const struct directory *directory, const char *utf8_name) +{ +#ifndef WIN32 + char buffer[MPD_PATH_MAX]; + char *path_fs; + const char *p; + ssize_t ret; + + path_fs = map_directory_child_fs(directory, utf8_name); + if (path_fs == NULL) + return true; + + ret = readlink(path_fs, buffer, sizeof(buffer)); + g_free(path_fs); + if (ret < 0) + /* don't skip if this is not a symlink */ + return errno != EINVAL; + + if (!follow_inside_symlinks && !follow_outside_symlinks) { + /* ignore all symlinks */ + return true; + } else if (follow_inside_symlinks && follow_outside_symlinks) { + /* consider all symlinks */ + return false; + } + + if (buffer[0] == '/') + return !follow_outside_symlinks; + + p = buffer; + while (*p == '.') { + if (p[1] == '.' && p[2] == '/') { + /* "../" moves to parent directory */ + directory = directory->parent; + if (directory == NULL) { + /* we have moved outside the music + directory - skip this symlink + if such symlinks are not allowed */ + return !follow_outside_symlinks; + } + p += 3; + } else if (p[1] == '/') + /* eliminate "./" */ + p += 2; + else + break; + } + + /* we are still in the music directory, so this symlink points + to a song which is already in the database - skip according + to the follow_inside_symlinks param*/ + return !follow_inside_symlinks; +#else + /* no symlink checking on WIN32 */ + + (void)directory; + (void)utf8_name; + + return false; +#endif +} + +static bool +updateDirectory(struct directory *directory, const struct stat *st) +{ + DIR *dir; + struct dirent *ent; + char *path_fs; + + assert(S_ISDIR(st->st_mode)); + + directory_set_stat(directory, st); + + path_fs = map_directory_fs(directory); + if (path_fs == NULL) + return false; + + dir = opendir(path_fs); + if (!dir) { + g_warning("Failed to open directory %s: %s", + path_fs, g_strerror(errno)); + g_free(path_fs); + return false; + } + + g_free(path_fs); + + removeDeletedFromDirectory(directory); + + while ((ent = readdir(dir))) { + char *utf8; + struct stat st2; + + if (skip_path(ent->d_name)) + continue; + + utf8 = fs_charset_to_utf8(ent->d_name); + if (utf8 == NULL || skip_symlink(directory, utf8)) { + g_free(utf8); + continue; + } + + if (stat_directory_child(directory, utf8, &st2) == 0) + updateInDirectory(directory, utf8, &st2); + else + delete_name_in(directory, utf8); + + g_free(utf8); + } + + closedir(dir); + + directory->mtime = st->st_mtime; + + return true; +} + +static struct directory * +directory_make_child_checked(struct directory *parent, const char *path) +{ + struct directory *directory; + char *base; + struct stat st; + struct song *conflicting; + + directory = directory_get_child(parent, path); + if (directory != NULL) + return directory; + + base = g_path_get_basename(path); + + if (stat_directory_child(parent, base, &st) < 0 || + inodeFoundInParent(parent, st.st_ino, st.st_dev)) { + g_free(base); + return NULL; + } + + /* if we're adding directory paths, make sure to delete filenames + with potentially the same name */ + conflicting = songvec_find(&parent->songs, base); + if (conflicting) + delete_song(parent, conflicting); + + g_free(base); + + directory = directory_new_child(parent, path); + directory_set_stat(directory, &st); + return directory; +} + +static struct directory * +addParentPathToDB(const char *utf8path) +{ + struct directory *directory = db_get_root(); + char *duplicated = g_strdup(utf8path); + char *slash = duplicated; + + while ((slash = strchr(slash, '/')) != NULL) { + *slash = 0; + + directory = directory_make_child_checked(directory, + duplicated); + if (directory == NULL || slash == NULL) + break; + + *slash++ = '/'; + } + + g_free(duplicated); + return directory; +} + +static void +updatePath(const char *path) +{ + struct directory *parent; + char *name; + struct stat st; + + parent = addParentPathToDB(path); + if (parent == NULL) + return; + + name = g_path_get_basename(path); + + if (stat_directory_child(parent, name, &st) == 0) + updateInDirectory(parent, name, &st); + else + delete_name_in(parent, name); + + g_free(name); +} + +bool +update_walk(const char *path) +{ + modified = false; + + if (path != NULL && !isRootDirectory(path)) { + updatePath(path); + } else { + struct directory *directory = db_get_root(); + struct stat st; + + if (stat_directory(directory, &st) == 0) + updateDirectory(directory, &st); + } + + return modified; +} |