diff options
Diffstat (limited to 'tools/mpris-player.c')
| -rw-r--r-- | tools/mpris-player.c | 2593 |
1 files changed, 2593 insertions, 0 deletions
diff --git a/tools/mpris-player.c b/tools/mpris-player.c new file mode 100644 index 00000000..c94330cb --- /dev/null +++ b/tools/mpris-player.c @@ -0,0 +1,2593 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.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 St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <errno.h> +#include <unistd.h> +#include <stdlib.h> +#include <signal.h> +#include <getopt.h> +#include <string.h> +#include <inttypes.h> + +#include <dbus/dbus.h> +#include <glib.h> +#include <gdbus/gdbus.h> + +#define BLUEZ_BUS_NAME "org.bluez" +#define BLUEZ_PATH "/org/bluez" +#define BLUEZ_ADAPTER_INTERFACE "org.bluez.Adapter1" +#define BLUEZ_MEDIA_INTERFACE "org.bluez.Media1" +#define BLUEZ_MEDIA_PLAYER_INTERFACE "org.bluez.MediaPlayer1" +#define BLUEZ_MEDIA_FOLDER_INTERFACE "org.bluez.MediaFolder1" +#define BLUEZ_MEDIA_ITEM_INTERFACE "org.bluez.MediaItem1" +#define BLUEZ_MEDIA_TRANSPORT_INTERFACE "org.bluez.MediaTransport1" +#define MPRIS_BUS_NAME "org.mpris.MediaPlayer2." +#define MPRIS_INTERFACE "org.mpris.MediaPlayer2" +#define MPRIS_PLAYER_INTERFACE "org.mpris.MediaPlayer2.Player" +#define MPRIS_TRACKLIST_INTERFACE "org.mpris.MediaPlayer2.TrackList" +#define MPRIS_PLAYLISTS_INTERFACE "org.mpris.MediaPlayer2.Playlists" +#define MPRIS_PLAYER_PATH "/org/mpris/MediaPlayer2" +#define ERROR_INTERFACE "org.mpris.MediaPlayer2.Error" + +static GMainLoop *main_loop; +static GDBusProxy *adapter = NULL; +static DBusConnection *sys = NULL; +static DBusConnection *session = NULL; +static GDBusClient *client = NULL; +static GSList *players = NULL; +static GSList *transports = NULL; + +static gboolean option_version = FALSE; +static gboolean option_export = FALSE; + +struct tracklist { + GDBusProxy *proxy; + GSList *items; +}; + +struct player { + char *bus_name; + DBusConnection *conn; + GDBusProxy *proxy; + GDBusProxy *folder; + GDBusProxy *device; + GDBusProxy *transport; + GDBusProxy *playlist; + struct tracklist *tracklist; +}; + +typedef int (* parse_metadata_func) (DBusMessageIter *iter, const char *key, + DBusMessageIter *metadata); + +static void dict_append_entry(DBusMessageIter *dict, const char *key, int type, + void *val); + +static void sig_term(int sig) +{ + g_main_loop_quit(main_loop); +} + +static DBusMessage *get_all(DBusConnection *conn, const char *name) +{ + DBusMessage *msg, *reply; + DBusError err; + const char *iface = MPRIS_PLAYER_INTERFACE; + + msg = dbus_message_new_method_call(name, MPRIS_PLAYER_PATH, + DBUS_INTERFACE_PROPERTIES, "GetAll"); + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + return NULL; + } + + dbus_message_append_args(msg, DBUS_TYPE_STRING, &iface, + DBUS_TYPE_INVALID); + + dbus_error_init(&err); + + reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err); + + dbus_message_unref(msg); + + if (!reply) { + if (dbus_error_is_set(&err)) { + fprintf(stderr, "%s\n", err.message); + dbus_error_free(&err); + } + return NULL; + } + + return reply; +} + +static void append_variant(DBusMessageIter *iter, int type, void *val) +{ + DBusMessageIter value; + char sig[2] = { type, '\0' }; + + dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, sig, &value); + + dbus_message_iter_append_basic(&value, type, val); + + dbus_message_iter_close_container(iter, &value); +} + +static void append_array_variant(DBusMessageIter *iter, int type, void *val, + int n_elements) +{ + DBusMessageIter variant, array; + char type_sig[2] = { type, '\0' }; + char array_sig[3] = { DBUS_TYPE_ARRAY, type, '\0' }; + + dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, + array_sig, &variant); + + dbus_message_iter_open_container(&variant, DBUS_TYPE_ARRAY, + type_sig, &array); + + if (dbus_type_is_fixed(type) == TRUE) { + dbus_message_iter_append_fixed_array(&array, type, val, + n_elements); + } else if (type == DBUS_TYPE_STRING || type == DBUS_TYPE_OBJECT_PATH) { + const char ***str_array = val; + int i; + + for (i = 0; i < n_elements; i++) + dbus_message_iter_append_basic(&array, type, + &((*str_array)[i])); + } + + dbus_message_iter_close_container(&variant, &array); + + dbus_message_iter_close_container(iter, &variant); +} + +static void dict_append_array(DBusMessageIter *dict, const char *key, int type, + void *val, int n_elements) +{ + DBusMessageIter entry; + + dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY, + NULL, &entry); + + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key); + + append_array_variant(&entry, type, val, n_elements); + + dbus_message_iter_close_container(dict, &entry); +} + +static void append_basic(DBusMessageIter *base, DBusMessageIter *iter, + int type) +{ + const void *value; + + dbus_message_iter_get_basic(iter, &value); + dbus_message_iter_append_basic(base, type, &value); +} + +static void append_iter(DBusMessageIter *base, DBusMessageIter *iter); +static void append_container(DBusMessageIter *base, DBusMessageIter *iter, + int type) +{ + DBusMessageIter iter_sub, base_sub; + char *sig; + + dbus_message_iter_recurse(iter, &iter_sub); + + switch (type) { + case DBUS_TYPE_ARRAY: + case DBUS_TYPE_VARIANT: + sig = dbus_message_iter_get_signature(&iter_sub); + break; + default: + sig = NULL; + break; + } + + dbus_message_iter_open_container(base, type, sig, &base_sub); + + if (sig != NULL) + dbus_free(sig); + + append_iter(&base_sub, &iter_sub); + + dbus_message_iter_close_container(base, &base_sub); +} + +static void append_iter(DBusMessageIter *base, DBusMessageIter *iter) +{ + int type; + + while ((type = dbus_message_iter_get_arg_type(iter)) != + DBUS_TYPE_INVALID) { + if (dbus_type_is_basic(type)) + append_basic(base, iter, type); + else if (dbus_type_is_container(type)) + append_container(base, iter, type); + + dbus_message_iter_next(iter); + } +} + +static void dict_append_iter(DBusMessageIter *dict, const char *key, + DBusMessageIter *iter) +{ + DBusMessageIter entry; + + dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY, + NULL, &entry); + + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key); + + append_iter(&entry, iter); + + dbus_message_iter_close_container(dict, &entry); +} + +static int parse_metadata_entry(DBusMessageIter *entry, const char *key, + DBusMessageIter *metadata) +{ + if (dbus_message_iter_get_arg_type(entry) != DBUS_TYPE_VARIANT) + return -EINVAL; + + dict_append_iter(metadata, key, entry); + + return 0; +} + +static int parse_metadata(DBusMessageIter *args, DBusMessageIter *metadata, + parse_metadata_func func) +{ + DBusMessageIter dict; + int ctype; + + ctype = dbus_message_iter_get_arg_type(args); + if (ctype != DBUS_TYPE_ARRAY) + return -EINVAL; + + dbus_message_iter_recurse(args, &dict); + + while ((ctype = dbus_message_iter_get_arg_type(&dict)) != + DBUS_TYPE_INVALID) { + DBusMessageIter entry; + const char *key; + + if (ctype != DBUS_TYPE_DICT_ENTRY) + return -EINVAL; + + dbus_message_iter_recurse(&dict, &entry); + if (dbus_message_iter_get_arg_type(&entry) != DBUS_TYPE_STRING) + return -EINVAL; + + dbus_message_iter_get_basic(&entry, &key); + dbus_message_iter_next(&entry); + + if (func(&entry, key, metadata) < 0) + return -EINVAL; + + dbus_message_iter_next(&dict); + } + + return 0; +} + +static void append_metadata(DBusMessageIter *iter, DBusMessageIter *dict, + parse_metadata_func func) +{ + DBusMessageIter value, metadata; + + dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, "a{sv}", + &value); + + dbus_message_iter_open_container(&value, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &metadata); + + parse_metadata(dict, &metadata, func); + + dbus_message_iter_close_container(&value, &metadata); + dbus_message_iter_close_container(iter, &value); +} + +static void dict_append_entry(DBusMessageIter *dict, const char *key, int type, + void *val) +{ + DBusMessageIter entry; + + if (type == DBUS_TYPE_STRING) { + const char *str = *((const char **) val); + if (str == NULL) + return; + } + + dbus_message_iter_open_container(dict, DBUS_TYPE_DICT_ENTRY, + NULL, &entry); + + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &key); + + if (strcasecmp(key, "Metadata") == 0) + append_metadata(&entry, val, parse_metadata_entry); + else + append_variant(&entry, type, val); + + dbus_message_iter_close_container(dict, &entry); +} + +static char *sender2path(const char *sender) +{ + char *path; + + path = g_strconcat("/", sender, NULL); + return g_strdelimit(path, ":.", '_'); +} + +static void copy_reply(DBusPendingCall *call, void *user_data) +{ + DBusMessage *msg = user_data; + DBusMessage *reply = dbus_pending_call_steal_reply(call); + DBusMessage *copy; + DBusMessageIter args, iter; + + copy = dbus_message_new_method_return(msg); + if (copy == NULL) { + dbus_message_unref(reply); + return; + } + + dbus_message_iter_init_append(copy, &iter); + + if (!dbus_message_iter_init(reply, &args)) + goto done; + + append_iter(&iter, &args); + + dbus_connection_send(sys, copy, NULL); + +done: + dbus_message_unref(copy); + dbus_message_unref(reply); +} + +static DBusHandlerResult player_message(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + char *owner = data; + DBusMessage *copy; + DBusMessageIter args, iter; + DBusPendingCall *call; + + dbus_message_iter_init(msg, &args); + + copy = dbus_message_new_method_call(owner, + MPRIS_PLAYER_PATH, + dbus_message_get_interface(msg), + dbus_message_get_member(msg)); + if (copy == NULL) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + dbus_message_iter_init_append(copy, &iter); + append_iter(&iter, &args); + + if (!dbus_connection_send_with_reply(session, copy, &call, -1)) + goto done; + + dbus_message_ref(msg); + dbus_pending_call_set_notify(call, copy_reply, msg, NULL); + dbus_pending_call_unref(call); + +done: + dbus_message_unref(copy); + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static struct player *find_player_by_bus_name(const char *name) +{ + GSList *l; + + for (l = players; l; l = l->next) { + struct player *player = l->data; + + if (strcmp(player->bus_name, name) == 0) + return player; + } + + return NULL; +} + +static const DBusObjectPathVTable player_table = { + .message_function = player_message, +}; + +static void add_player(DBusConnection *conn, const char *name, + const char *sender) +{ + DBusMessage *reply = NULL; + DBusMessage *msg; + DBusMessageIter iter, args; + DBusError err; + char *path, *owner; + struct player *player; + + if (!adapter) + return; + + player = find_player_by_bus_name(name); + if (player == NULL) { + reply = get_all(conn, name); + if (reply == NULL) + return; + dbus_message_iter_init(reply, &args); + } + + msg = dbus_message_new_method_call(BLUEZ_BUS_NAME, + g_dbus_proxy_get_path(adapter), + BLUEZ_MEDIA_INTERFACE, + "RegisterPlayer"); + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + return; + } + + path = sender2path(sender); + dbus_connection_get_object_path_data(sys, path, (void **) &owner); + + if (owner != NULL) + goto done; + + dbus_message_iter_init_append(msg, &iter); + + dbus_message_iter_append_basic(&iter, DBUS_TYPE_OBJECT_PATH, &path); + + if (player != NULL) { + if (!g_dbus_get_properties(player->conn, + MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE, + &iter)) + goto done; + } else { + append_iter(&iter, &args); + dbus_message_unref(reply); + } + + dbus_error_init(&err); + + owner = strdup(sender); + + if (!dbus_connection_register_object_path(sys, path, &player_table, + owner)) { + fprintf(stderr, "Can't register object path for player\n"); + free(owner); + goto done; + } + + reply = dbus_connection_send_with_reply_and_block(sys, msg, -1, &err); + if (!reply) { + fprintf(stderr, "Can't register player\n"); + free(owner); + if (dbus_error_is_set(&err)) { + fprintf(stderr, "%s\n", err.message); + dbus_error_free(&err); + } + } + +done: + if (reply) + dbus_message_unref(reply); + dbus_message_unref(msg); + g_free(path); +} + +static void remove_player(DBusConnection *conn, const char *sender) +{ + DBusMessage *msg; + char *path, *owner; + + if (!adapter) + return; + + path = sender2path(sender); + dbus_connection_get_object_path_data(sys, path, (void **) &owner); + + if (owner == NULL) { + g_free(path); + return; + } + + msg = dbus_message_new_method_call(BLUEZ_BUS_NAME, + g_dbus_proxy_get_path(adapter), + BLUEZ_MEDIA_INTERFACE, + "UnregisterPlayer"); + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + g_free(path); + return; + } + + dbus_message_append_args(msg, DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID); + + dbus_connection_send(sys, msg, NULL); + + dbus_connection_unregister_object_path(sys, path); + + dbus_message_unref(msg); + g_free(path); + g_free(owner); +} + +static gboolean player_signal(DBusConnection *conn, DBusMessage *msg, + void *user_data) +{ + DBusMessage *signal; + DBusMessageIter iter, args; + char *path, *owner; + + dbus_message_iter_init(msg, &iter); + + path = sender2path(dbus_message_get_sender(msg)); + dbus_connection_get_object_path_data(sys, path, (void **) &owner); + + if (owner == NULL) + goto done; + + signal = dbus_message_new_signal(path, dbus_message_get_interface(msg), + dbus_message_get_member(msg)); + if (signal == NULL) { + fprintf(stderr, "Unable to allocate new %s.%s signal", + dbus_message_get_interface(msg), + dbus_message_get_member(msg)); + goto done; + } + + dbus_message_iter_init_append(signal, &args); + + append_iter(&args, &iter); + + dbus_connection_send(sys, signal, NULL); + dbus_message_unref(signal); + +done: + g_free(path); + + return TRUE; +} + +static gboolean name_owner_changed(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + const char *name, *old, *new; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_STRING, &old, + DBUS_TYPE_STRING, &new, + DBUS_TYPE_INVALID)) { + fprintf(stderr, "Invalid arguments for NameOwnerChanged signal"); + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + } + + if (!g_str_has_prefix(name, "org.mpris")) + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; + + if (*new == '\0') { + printf("player %s at %s disappear\n", name, old); + remove_player(conn, old); + } else if (option_export || find_player_by_bus_name(name) == NULL) { + printf("player %s at %s found\n", name, new); + add_player(conn, name, new); + } + + return TRUE; +} + +static char *get_name_owner(DBusConnection *conn, const char *name) +{ + DBusMessage *msg, *reply; + DBusError err; + char *owner; + + msg = dbus_message_new_method_call(DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, + DBUS_INTERFACE_DBUS, "GetNameOwner"); + + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + return NULL; + } + + dbus_message_append_args(msg, DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID); + + dbus_error_init(&err); + + reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err); + + dbus_message_unref(msg); + + if (!reply) { + if (dbus_error_is_set(&err)) { + fprintf(stderr, "%s\n", err.message); + dbus_error_free(&err); + } + return NULL; + } + + if (!dbus_message_get_args(reply, NULL, + DBUS_TYPE_STRING, &owner, + DBUS_TYPE_INVALID)) { + dbus_message_unref(reply); + return NULL; + } + + owner = g_strdup(owner); + + dbus_message_unref(reply); + + dbus_connection_flush(conn); + + return owner; +} + +static void parse_list_names(DBusConnection *conn, DBusMessageIter *args) +{ + DBusMessageIter array; + int ctype; + + ctype = dbus_message_iter_get_arg_type(args); + if (ctype != DBUS_TYPE_ARRAY) + return; + + dbus_message_iter_recurse(args, &array); + + while ((ctype = dbus_message_iter_get_arg_type(&array)) != + DBUS_TYPE_INVALID) { + const char *name; + char *owner; + + if (ctype != DBUS_TYPE_STRING) + goto next; + + dbus_message_iter_get_basic(&array, &name); + + if (!g_str_has_prefix(name, "org.mpris")) + goto next; + + owner = get_name_owner(conn, name); + + if (owner == NULL) + goto next; + + printf("player %s at %s found\n", name, owner); + + add_player(conn, name, owner); + + g_free(owner); +next: + dbus_message_iter_next(&array); + } +} + +static void list_names(DBusConnection *conn) +{ + DBusMessage *msg, *reply; + DBusMessageIter iter; + DBusError err; + + msg = dbus_message_new_method_call(DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, + DBUS_INTERFACE_DBUS, "ListNames"); + + if (!msg) { + fprintf(stderr, "Can't allocate new method call\n"); + return; + } + + dbus_error_init(&err); + + reply = dbus_connection_send_with_reply_and_block(conn, msg, -1, &err); + + dbus_message_unref(msg); + + if (!reply) { + if (dbus_error_is_set(&err)) { + fprintf(stderr, "%s\n", err.message); + dbus_error_free(&err); + } + return; + } + + dbus_message_iter_init(reply, &iter); + + parse_list_names(conn, &iter); + + dbus_message_unref(reply); + + dbus_connection_flush(conn); +} + +static void usage(void) +{ + printf("Bluetooth mpris-player ver %s\n\n", VERSION); + + printf("Usage:\n"); +} + +static GOptionEntry options[] = { + { "version", 'v', 0, G_OPTION_ARG_NONE, &option_version, + "Show version information and exit" }, + { "export", 'e', 0, G_OPTION_ARG_NONE, &option_export, + "Export remote players" }, + { NULL }, +}; + +static void connect_handler(DBusConnection *connection, void *user_data) +{ + printf("org.bluez appeared\n"); +} + +static void disconnect_handler(DBusConnection *connection, void *user_data) +{ + printf("org.bluez disappeared\n"); +} + +static void unregister_tracklist(struct player *player) +{ + struct tracklist *tracklist = player->tracklist; + + g_slist_free(tracklist->items); + g_dbus_proxy_unref(tracklist->proxy); + g_free(tracklist); + player->tracklist = NULL; +} + +static void player_free(void *data) +{ + struct player *player = data; + + if (player->tracklist != NULL) + unregister_tracklist(player); + + if (player->conn) { + dbus_connection_close(player->conn); + dbus_connection_unref(player->conn); + } + + g_dbus_proxy_unref(player->device); + g_dbus_proxy_unref(player->proxy); + + if (player->transport) + g_dbus_proxy_unref(player->transport); + + if (player->playlist) + g_dbus_proxy_unref(player->playlist); + + g_free(player->bus_name); + g_free(player); +} + +struct pending_call { + struct player *player; + DBusMessage *msg; +}; + +static void pending_call_free(void *data) +{ + struct pending_call *p = data; + + if (p->msg) + dbus_message_unref(p->msg); + + g_free(p); +} + +static void player_reply(DBusMessage *message, void *user_data) +{ + struct pending_call *p = user_data; + struct player *player = p->player; + DBusMessage *msg = p->msg; + DBusMessage *reply; + DBusError err; + + dbus_error_init(&err); + if (dbus_set_error_from_message(&err, message)) { + fprintf(stderr, "error: %s", err.name); + reply = g_dbus_create_error(msg, err.name, "%s", err.message); + dbus_error_free(&err); + } else + reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID); + + g_dbus_send_message(player->conn, reply); +} + +static void player_control(struct player *player, DBusMessage *msg, + const char *name) +{ + struct pending_call *p; + + p = g_new0(struct pending_call, 1); + p->player = player; + p->msg = dbus_message_ref(msg); + + g_dbus_proxy_method_call(player->proxy, name, NULL, player_reply, + p, pending_call_free); +} + +static const char *status_to_playback(const char *status) +{ + if (strcasecmp(status, "playing") == 0) + return "Playing"; + else if (strcasecmp(status, "paused") == 0) + return "Paused"; + else + return "Stopped"; +} + +static const char *player_get_status(struct player *player) +{ + const char *status; + DBusMessageIter value; + + if (g_dbus_proxy_get_property(player->proxy, "Status", &value)) { + dbus_message_iter_get_basic(&value, &status); + return status_to_playback(status); + } + + if (player->transport == NULL) + goto done; + + if (!g_dbus_proxy_get_property(player->transport, "State", &value)) + goto done; + + dbus_message_iter_get_basic(&value, &status); + + if (strcasecmp(status, "active") == 0) + return "Playing"; + +done: + return "Stopped"; +} + +static DBusMessage *player_toggle(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + const char *status; + + status = player_get_status(player); + + if (strcasecmp(status, "Playing") == 0) + player_control(player, msg, "Pause"); + else + player_control(player, msg, "Play"); + + return NULL; +} + +static DBusMessage *player_play(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + + player_control(player, msg, "Play"); + + return NULL; +} + +static DBusMessage *player_pause(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + + player_control(player, msg, "Pause"); + + return NULL; +} + +static DBusMessage *player_stop(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + + player_control(player, msg, "Stop"); + + return NULL; +} + +static DBusMessage *player_next(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + + player_control(player, msg, "Next"); + + return NULL; +} + +static DBusMessage *player_previous(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + + player_control(player, msg, "Previous"); + + return NULL; +} + +static gboolean status_exists(const GDBusPropertyTable *property, void *data) +{ + struct player *player = data; + + return player_get_status(player) != NULL; +} + +static gboolean get_status(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + const char *status; + + status = player_get_status(player); + + dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &status); + + return TRUE; +} + +static gboolean repeat_exists(const GDBusPropertyTable *property, void *data) +{ + DBusMessageIter iter; + struct player *player = data; + + return g_dbus_proxy_get_property(player->proxy, "Repeat", &iter); +} + +static const char *repeat_to_loopstatus(const char *value) +{ + if (strcasecmp(value, "off") == 0) + return "None"; + else if (strcasecmp(value, "singletrack") == 0) + return "Track"; + else if (strcasecmp(value, "alltracks") == 0) + return "Playlist"; + + return NULL; +} + +static gboolean get_repeat(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + DBusMessageIter value; + const char *status; + + if (!g_dbus_proxy_get_property(player->proxy, "Repeat", &value)) + return FALSE; + + dbus_message_iter_get_basic(&value, &status); + + status = repeat_to_loopstatus(status); + if (status == NULL) + return FALSE; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &status); + + return TRUE; +} + +static const char *loopstatus_to_repeat(const char *value) +{ + if (strcasecmp(value, "None") == 0) + return "off"; + else if (strcasecmp(value, "Track") == 0) + return "singletrack"; + else if (strcasecmp(value, "Playlist") == 0) + return "alltracks"; + + return NULL; +} + +static void property_result(const DBusError *err, void *user_data) +{ + GDBusPendingPropertySet id = GPOINTER_TO_UINT(user_data); + + if (!dbus_error_is_set(err)) + return g_dbus_pending_property_success(id); + + g_dbus_pending_property_error(id, err->name, err->message); +} + +static void set_repeat(const GDBusPropertyTable *property, + DBusMessageIter *iter, GDBusPendingPropertySet id, + void *data) +{ + struct player *player = data; + const char *value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING) { + g_dbus_pending_property_error(id, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments in method call"); + return; + } + + dbus_message_iter_get_basic(iter, &value); + + value = loopstatus_to_repeat(value); + if (value == NULL) { + g_dbus_pending_property_error(id, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments in method call"); + return; + } + + g_dbus_proxy_set_property_basic(player->proxy, "Repeat", + DBUS_TYPE_STRING, &value, + property_result, GUINT_TO_POINTER(id), + NULL); +} + +static gboolean get_double(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + double value = 1.0; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_DOUBLE, &value); + + return TRUE; +} + +static gboolean shuffle_exists(const GDBusPropertyTable *property, void *data) +{ + DBusMessageIter iter; + struct player *player = data; + + return g_dbus_proxy_get_property(player->proxy, "Shuffle", &iter); +} + +static gboolean get_shuffle(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + DBusMessageIter value; + const char *string; + dbus_bool_t shuffle; + + if (!g_dbus_proxy_get_property(player->proxy, "Shuffle", &value)) + return FALSE; + + dbus_message_iter_get_basic(&value, &string); + + shuffle = strcmp(string, "off") != 0; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &shuffle); + + return TRUE; +} + +static void set_shuffle(const GDBusPropertyTable *property, + DBusMessageIter *iter, GDBusPendingPropertySet id, + void *data) +{ + struct player *player = data; + dbus_bool_t shuffle; + const char *value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_BOOLEAN) { + g_dbus_pending_property_error(id, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments in method call"); + return; + } + + dbus_message_iter_get_basic(iter, &shuffle); + value = shuffle ? "alltracks" : "off"; + + g_dbus_proxy_set_property_basic(player->proxy, "Shuffle", + DBUS_TYPE_STRING, &value, + property_result, GUINT_TO_POINTER(id), + NULL); +} + +static gboolean position_exists(const GDBusPropertyTable *property, void *data) +{ + DBusMessageIter iter; + struct player *player = data; + + return g_dbus_proxy_get_property(player->proxy, "Position", &iter); +} + +static gboolean get_position(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + DBusMessageIter var; + uint32_t position; + int64_t value; + + if (!g_dbus_proxy_get_property(player->proxy, "Position", &var)) + return FALSE; + + dbus_message_iter_get_basic(&var, &position); + + value = position * 1000; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_INT64, &value); + + return TRUE; +} + +static gboolean track_exists(const GDBusPropertyTable *property, void *data) +{ + DBusMessageIter iter; + struct player *player = data; + + return g_dbus_proxy_get_property(player->proxy, "Track", &iter); +} + +static gboolean parse_string_metadata(DBusMessageIter *iter, const char *key, + DBusMessageIter *metadata) +{ + const char *value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING) + return FALSE; + + dbus_message_iter_get_basic(iter, &value); + + dict_append_entry(metadata, key, DBUS_TYPE_STRING, &value); + + return TRUE; +} + +static gboolean parse_array_metadata(DBusMessageIter *iter, const char *key, + DBusMessageIter *metadata) +{ + char **value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING) + return FALSE; + + value = dbus_malloc0(sizeof(char *)); + + dbus_message_iter_get_basic(iter, &(value[0])); + + dict_append_array(metadata, key, DBUS_TYPE_STRING, &value, 1); + + dbus_free(value); + + return TRUE; +} + +static gboolean parse_int64_metadata(DBusMessageIter *iter, const char *key, + DBusMessageIter *metadata) +{ + uint32_t duration; + int64_t value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_UINT32) + return FALSE; + + dbus_message_iter_get_basic(iter, &duration); + + value = duration * 1000; + + dict_append_entry(metadata, key, DBUS_TYPE_INT64, &value); + + return TRUE; +} + +static gboolean parse_int32_metadata(DBusMessageIter *iter, const char *key, + DBusMessageIter *metadata) +{ + uint32_t value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_UINT32) + return FALSE; + + dbus_message_iter_get_basic(iter, &value); + + dict_append_entry(metadata, key, DBUS_TYPE_INT32, &value); + + return TRUE; +} + +static gboolean parse_path_metadata(DBusMessageIter *iter, const char *key, + DBusMessageIter *metadata) +{ + const char *value; + + if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_OBJECT_PATH) + return FALSE; + + dbus_message_iter_get_basic(iter, &value); + + dict_append_entry(metadata, key, DBUS_TYPE_OBJECT_PATH, &value); + + return TRUE; +} + +static int parse_track_entry(DBusMessageIter *entry, const char *key, + DBusMessageIter *metadata) +{ + DBusMessageIter var; + + if (dbus_message_iter_get_arg_type(entry) != DBUS_TYPE_VARIANT) + return -EINVAL; + + dbus_message_iter_recurse(entry, &var); + + if (strcasecmp(key, "Title") == 0) { + if (!parse_string_metadata(&var, "xesam:title", metadata)) + return -EINVAL; + } else if (strcasecmp(key, "Artist") == 0) { + if (!parse_array_metadata(&var, "xesam:artist", metadata)) + return -EINVAL; + } else if (strcasecmp(key, "Album") == 0) { + if (!parse_string_metadata(&var, "xesam:album", metadata)) + return -EINVAL; + } else if (strcasecmp(key, "Genre") == 0) { + if (!parse_array_metadata(&var, "xesam:genre", metadata)) + return -EINVAL; + } else if (strcasecmp(key, "Duration") == 0) { + if (!parse_int64_metadata(&var, "mpris:length", metadata)) + return -EINVAL; + } else if (strcasecmp(key, "TrackNumber") == 0) { + if (!parse_int32_metadata(&var, "xesam:trackNumber", metadata)) + return -EINVAL; + } else if (strcasecmp(key, "Item") == 0) { + if (!parse_path_metadata(&var, "mpris:trackid", metadata)) + return -EINVAL; + } + + return 0; +} + +static gboolean get_track(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + DBusMessageIter var, metadata; + + if (!g_dbus_proxy_get_property(player->proxy, "Track", &var)) + return FALSE; + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &metadata); + + parse_metadata(&var, &metadata, parse_track_entry); + + dbus_message_iter_close_container(iter, &metadata); + + return TRUE; +} + +static gboolean get_enable(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + dbus_bool_t value = TRUE; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &value); + + return TRUE; +} + + +static gboolean get_volume(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + double value = 0.0; + uint16_t volume; + DBusMessageIter var; + + if (player->transport == NULL) + goto done; + + if (!g_dbus_proxy_get_property(player->transport, "Volume", &var)) + goto done; + + dbus_message_iter_get_basic(&var, &volume); + + value = (double) volume / 127; + +done: + dbus_message_iter_append_basic(iter, DBUS_TYPE_DOUBLE, &value); + + return TRUE; +} + +static const GDBusMethodTable player_methods[] = { + { GDBUS_ASYNC_METHOD("PlayPause", NULL, NULL, player_toggle) }, + { GDBUS_ASYNC_METHOD("Play", NULL, NULL, player_play) }, + { GDBUS_ASYNC_METHOD("Pause", NULL, NULL, player_pause) }, + { GDBUS_ASYNC_METHOD("Stop", NULL, NULL, player_stop) }, + { GDBUS_ASYNC_METHOD("Next", NULL, NULL, player_next) }, + { GDBUS_ASYNC_METHOD("Previous", NULL, NULL, player_previous) }, + { } +}; + +static const GDBusSignalTable player_signals[] = { + { GDBUS_SIGNAL("Seeked", GDBUS_ARGS({"Position", "x"})) }, + { } +}; + +static const GDBusPropertyTable player_properties[] = { + { "PlaybackStatus", "s", get_status, NULL, status_exists }, + { "LoopStatus", "s", get_repeat, set_repeat, repeat_exists }, + { "Rate", "d", get_double, NULL, NULL }, + { "MinimumRate", "d", get_double, NULL, NULL }, + { "MaximumRate", "d", get_double, NULL, NULL }, + { "Shuffle", "b", get_shuffle, set_shuffle, shuffle_exists }, + { "Position", "x", get_position, NULL, position_exists }, + { "Metadata", "a{sv}", get_track, NULL, track_exists }, + { "Volume", "d", get_volume, NULL, NULL }, + { "CanGoNext", "b", get_enable, NULL, NULL }, + { "CanGoPrevious", "b", get_enable, NULL, NULL }, + { "CanPlay", "b", get_enable, NULL, NULL }, + { "CanPause", "b", get_enable, NULL, NULL }, + { "CanSeek", "b", get_enable, NULL, NULL }, + { "CanControl", "b", get_enable, NULL, NULL }, + { } +}; + +static gboolean get_disable(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + dbus_bool_t value = FALSE; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &value); + + return TRUE; +} + +static gboolean get_name(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + DBusMessageIter var; + const char *alias; + char *name; + + if (!g_dbus_proxy_get_property(player->device, "Alias", &var)) + return FALSE; + + dbus_message_iter_get_basic(&var, &alias); + + if (g_dbus_proxy_get_property(player->proxy, "Name", &var)) { + dbus_message_iter_get_basic(&var, &name); + name = g_strconcat(alias, " ", name, NULL); + } else + name = g_strdup(alias); + + dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &name); + + g_free(name); + + return TRUE; +} + +static const GDBusMethodTable mpris_methods[] = { + { } +}; + +static gboolean get_tracklist(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + dbus_bool_t value; + + value = player->tracklist != NULL ? TRUE : FALSE; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &value); + + return TRUE; +} + +static const GDBusPropertyTable mpris_properties[] = { + { "CanQuit", "b", get_disable, NULL, NULL }, + { "Fullscreen", "b", get_disable, NULL, NULL }, + { "CanSetFullscreen", "b", get_disable, NULL, NULL }, + { "CanRaise", "b", get_disable, NULL, NULL }, + { "HasTrackList", "b", get_tracklist, NULL, NULL }, + { "Identity", "s", get_name, NULL, NULL }, + { } +}; + +static GDBusProxy *find_item(struct player *player, const char *path) +{ + struct tracklist *tracklist = player->tracklist; + GSList *l; + + for (l = tracklist->items; l; l = l->next) { + GDBusProxy *proxy = l->data; + const char *p = g_dbus_proxy_get_path(proxy); + + if (g_str_equal(path, p)) + return proxy; + } + + return NULL; +} + +static void append_item_metadata(void *data, void *user_data) +{ + GDBusProxy *item = data; + DBusMessageIter *iter = user_data; + DBusMessageIter var, metadata; + const char *path = g_dbus_proxy_get_path(item); + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &metadata); + + dict_append_entry(&metadata, "mpris:trackid", DBUS_TYPE_OBJECT_PATH, + &path); + + if (g_dbus_proxy_get_property(item, "Metadata", &var)) + parse_metadata(&var, &metadata, parse_track_entry); + + dbus_message_iter_close_container(iter, &metadata); + + return; +} + +static DBusMessage *tracklist_get_metadata(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + struct player *player = data; + DBusMessage *reply; + DBusMessageIter args, array; + GSList *l = NULL; + + dbus_message_iter_init(msg, &args); + + if (dbus_message_iter_get_arg_type(&args) != DBUS_TYPE_ARRAY) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + dbus_message_iter_recurse(&args, &array); + + while (dbus_message_iter_get_arg_type(&array) == + DBUS_TYPE_OBJECT_PATH) { + const char *path; + GDBusProxy *item; + + dbus_message_iter_get_basic(&array, &path); + + item = find_item(player, path); + if (item == NULL) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + l = g_slist_append(l, item); + + dbus_message_iter_next(&array); + } + + reply = dbus_message_new_method_return(msg); + + dbus_message_iter_init_append(reply, &args); + + dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY, + DBUS_TYPE_ARRAY_AS_STRING + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING + DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, + &array); + + g_slist_foreach(l, append_item_metadata, &array); + + dbus_message_iter_close_container(&args, &array); + + return reply; +} + +static void item_play_reply(DBusMessage *message, void *user_data) +{ + struct pending_call *p = user_data; + struct player *player = p->player; + DBusMessage *msg = p->msg; + DBusMessage *reply; + DBusError err; + + dbus_error_init(&err); + if (dbus_set_error_from_message(&err, message)) { + fprintf(stderr, "error: %s", err.name); + reply = g_dbus_create_error(msg, err.name, "%s", err.message); + dbus_error_free(&err); + } else + reply = g_dbus_create_reply(msg, DBUS_TYPE_INVALID); + + g_dbus_send_message(player->conn, reply); +} + +static void item_play(struct player *player, DBusMessage *msg, + GDBusProxy *item) +{ + struct pending_call *p; + + p = g_new0(struct pending_call, 1); + p->player = player; + p->msg = dbus_message_ref(msg); + + g_dbus_proxy_method_call(item, "Play", NULL, item_play_reply, + p, pending_call_free); +} + +static DBusMessage *tracklist_goto(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + struct player *player = data; + GDBusProxy *item; + const char *path; + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID)) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments"); + + item = find_item(player, path); + if (item == NULL) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments"); + + item_play(player, msg, item); + + return NULL; +} + +static DBusMessage *tracklist_add_track(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + return g_dbus_create_error(msg, ERROR_INTERFACE ".NotImplemented", + "Not implemented"); +} + +static DBusMessage *tracklist_remove_track(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + return g_dbus_create_error(msg, ERROR_INTERFACE ".NotImplemented", + "Not implemented"); +} + +static const GDBusMethodTable tracklist_methods[] = { + { GDBUS_METHOD("GetTracksMetadata", + GDBUS_ARGS({ "tracks", "ao" }), + GDBUS_ARGS({ "metadata", "aa{sv}" }), + tracklist_get_metadata) }, + { GDBUS_METHOD("AddTrack", + GDBUS_ARGS({ "uri", "s" }, { "after", "o" }, + { "current", "b" }), + NULL, + tracklist_add_track) }, + { GDBUS_METHOD("RemoveTrack", + GDBUS_ARGS({ "track", "o" }), NULL, + tracklist_remove_track) }, + { GDBUS_ASYNC_METHOD("GoTo", + GDBUS_ARGS({ "track", "o" }), NULL, + tracklist_goto) }, + { }, +}; + +static const GDBusSignalTable tracklist_signals[] = { + { GDBUS_SIGNAL("TrackAdded", GDBUS_ARGS({"metadata", "a{sv}"}, + {"after", "o"})) }, + { GDBUS_SIGNAL("TrackRemoved", GDBUS_ARGS({"track", "o"})) }, + { GDBUS_SIGNAL("TrackMetadataChanged", GDBUS_ARGS({"track", "o"}, + {"metadata", "a{sv}"})) }, + { } +}; + +static gboolean tracklist_exists(const GDBusPropertyTable *property, void *data) +{ + struct player *player = data; + + return player->tracklist != NULL; +} + +static void append_path(gpointer data, gpointer user_data) +{ + GDBusProxy *proxy = data; + DBusMessageIter *iter = user_data; + const char *path = g_dbus_proxy_get_path(proxy); + + dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH, &path); +} + +static gboolean get_tracks(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + struct tracklist *tracklist = player->tracklist; + DBusMessageIter value; + + if (tracklist == NULL) + return FALSE; + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_TYPE_OBJECT_PATH_AS_STRING, + &value); + g_slist_foreach(player->tracklist->items, append_path, &value); + dbus_message_iter_close_container(iter, &value); + + return TRUE; +} + +static const GDBusPropertyTable tracklist_properties[] = { + { "Tracks", "ao", get_tracks, NULL, tracklist_exists }, + { "CanEditTracks", "b", get_disable, NULL, NULL }, + { } +}; + +static void list_items_setup(DBusMessageIter *iter, void *user_data) +{ + DBusMessageIter dict; + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING + DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, + &dict); + dbus_message_iter_close_container(iter, &dict); +} + +static void change_folder_reply(DBusMessage *message, void *user_data) +{ + struct player *player = user_data; + struct tracklist *tracklist = player->tracklist; + DBusError err; + + dbus_error_init(&err); + if (dbus_set_error_from_message(&err, message)) { + fprintf(stderr, "error: %s", err.name); + return; + } + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYLISTS_INTERFACE, + "ActivePlaylist"); + + g_dbus_proxy_method_call(tracklist->proxy, "ListItems", + list_items_setup, NULL, NULL, NULL); +} + +static void change_folder_setup(DBusMessageIter *iter, void *user_data) +{ + struct player *player = user_data; + const char *path; + + path = g_dbus_proxy_get_path(player->playlist); + + dbus_message_iter_append_basic(iter, DBUS_TYPE_OBJECT_PATH, &path); +} + +static DBusMessage *playlist_activate(DBusConnection *conn, + DBusMessage *msg, void *data) +{ + struct player *player = data; + struct tracklist *tracklist = player->tracklist; + const char *path; + + if (player->playlist == NULL || tracklist == NULL) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID)) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + if (!g_str_equal(path, g_dbus_proxy_get_path(player->playlist))) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + g_dbus_proxy_method_call(tracklist->proxy, "ChangeFolder", + change_folder_setup, change_folder_reply, + player, NULL); + + return g_dbus_create_reply(msg, DBUS_TYPE_INVALID); +} + +static DBusMessage *playlist_get(DBusConnection *conn, DBusMessage *msg, + void *data) +{ + struct player *player = data; + uint32_t index, count; + const char *order; + dbus_bool_t reverse; + DBusMessage *reply; + DBusMessageIter iter, entry, value, name; + const char *string, *path; + const char *empty = ""; + + if (player->playlist == NULL) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + if (!dbus_message_get_args(msg, NULL, + DBUS_TYPE_UINT32, &index, + DBUS_TYPE_UINT32, &count, + DBUS_TYPE_STRING, &order, + DBUS_TYPE_BOOLEAN, &reverse, + DBUS_TYPE_INVALID)) + return g_dbus_create_error(msg, + ERROR_INTERFACE ".InvalidArguments", + "Invalid Arguments"); + + path = g_dbus_proxy_get_path(player->playlist); + + reply = dbus_message_new_method_return(msg); + + dbus_message_iter_init_append(reply, &iter); + + dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(oss)", + &entry); + dbus_message_iter_open_container(&entry, DBUS_TYPE_STRUCT, NULL, + &value); + dbus_message_iter_append_basic(&value, DBUS_TYPE_OBJECT_PATH, &path); + if (g_dbus_proxy_get_property(player->playlist, "Name", &name)) { + dbus_message_iter_get_basic(&name, &string); + dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, + &string); + } else { + dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, + &path); + } + dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &empty); + dbus_message_iter_close_container(&entry, &value); + dbus_message_iter_close_container(&iter, &entry); + + return reply; +} + +static const GDBusMethodTable playlist_methods[] = { + { GDBUS_METHOD("ActivatePlaylist", + GDBUS_ARGS({ "playlist", "o" }), NULL, + playlist_activate) }, + { GDBUS_METHOD("GetPlaylists", + GDBUS_ARGS({ "index", "u" }, { "maxcount", "u"}, + { "order", "s" }, { "reverse", "b" }), + GDBUS_ARGS({ "playlists", "a(oss)"}), + playlist_get) }, + { }, +}; + +static gboolean playlist_exists(const GDBusPropertyTable *property, void *data) +{ + struct player *player = data; + + return player->playlist != NULL; +} + +static gboolean get_playlist_count(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + uint32_t count = 1; + + if (player->playlist == NULL) + return FALSE; + + dbus_message_iter_append_basic(iter, DBUS_TYPE_UINT32, &count); + + return TRUE; +} + +static gboolean get_orderings(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + DBusMessageIter value; + const char *order = "User"; + + dbus_message_iter_open_container(iter, DBUS_TYPE_ARRAY, + DBUS_TYPE_OBJECT_PATH_AS_STRING, + &value); + dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &order); + dbus_message_iter_close_container(iter, &value); + + return TRUE; +} + +static gboolean get_active_playlist(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct player *player = data; + DBusMessageIter value, entry; + dbus_bool_t enabled = TRUE; + const char *path, *empty = ""; + + if (player->playlist == NULL) + return FALSE; + + path = g_dbus_proxy_get_path(player->playlist); + + dbus_message_iter_open_container(iter, DBUS_TYPE_STRUCT, + NULL, &value); + dbus_message_iter_append_basic(&value, DBUS_TYPE_BOOLEAN, &enabled); + dbus_message_iter_open_container(&value, DBUS_TYPE_STRUCT, NULL, + &entry); + dbus_message_iter_append_basic(&entry, DBUS_TYPE_OBJECT_PATH, &path); + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &path); + dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &empty); + dbus_message_iter_close_container(&value, &entry); + dbus_message_iter_close_container(iter, &value); + + return TRUE; +} + +static const GDBusPropertyTable playlist_properties[] = { + { "PlaylistCount", "u", get_playlist_count, NULL, playlist_exists }, + { "Orderings", "as", get_orderings, NULL, NULL }, + { "ActivePlaylist", "(b(oss))", get_active_playlist, NULL, + playlist_exists }, + { } +}; + +#define a_z "abcdefghijklmnopqrstuvwxyz" +#define A_Z "ABCDEFGHIJKLMNOPQRSTUVWXYZ" +#define _0_9 "_0123456789" + +static char *mpris_busname(char *name) +{ + if (g_ascii_isdigit(name[0])) + return g_strconcat(MPRIS_BUS_NAME, "bt_", + g_strcanon(name, A_Z a_z _0_9, '_'), NULL); + else + return g_strconcat(MPRIS_BUS_NAME, + g_strcanon(name, A_Z a_z _0_9, '_'), NULL); +} + +static GDBusProxy *find_transport_by_path(const char *path) +{ + GSList *l; + + for (l = transports; l; l = l->next) { + GDBusProxy *transport = l->data; + DBusMessageIter iter; + const char *value; + + if (!g_dbus_proxy_get_property(transport, "Device", &iter)) + continue; + + dbus_message_iter_get_basic(&iter, &value); + + if (strcmp(path, value) == 0) + return transport; + } + + return NULL; +} + +static struct player *find_player(GDBusProxy *proxy) +{ + GSList *l; + + for (l = players; l; l = l->next) { + struct player *player = l->data; + const char *path, *p; + + if (player->proxy == proxy) + return player; + + path = g_dbus_proxy_get_path(proxy); + p = g_dbus_proxy_get_path(player->proxy); + if (g_str_equal(path, p)) + return player; + } + + return NULL; +} + +static void register_tracklist(GDBusProxy *proxy) +{ + struct player *player; + struct tracklist *tracklist; + + player = find_player(proxy); + if (player == NULL) + return; + + if (player->tracklist != NULL) + return; + + tracklist = g_new0(struct tracklist, 1); + tracklist->proxy = g_dbus_proxy_ref(proxy); + + player->tracklist = tracklist; + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_INTERFACE, + "HasTrackList"); + + if (player->playlist == NULL) + return; + + g_dbus_proxy_method_call(player->tracklist->proxy, "ChangeFolder", + change_folder_setup, change_folder_reply, + player, NULL); +} + +static void register_player(GDBusProxy *proxy) +{ + struct player *player; + DBusMessageIter iter; + const char *path, *alias, *name; + char *busname; + GDBusProxy *device, *transport; + + if (!g_dbus_proxy_get_property(proxy, "Device", &iter)) + return; + + dbus_message_iter_get_basic(&iter, &path); + + device = g_dbus_proxy_new(client, path, "org.bluez.Device1"); + if (device == NULL) + return; + + if (!g_dbus_proxy_get_property(device, "Alias", &iter)) + return; + + dbus_message_iter_get_basic(&iter, &alias); + + if (g_dbus_proxy_get_property(proxy, "Name", &iter)) { + dbus_message_iter_get_basic(&iter, &name); + busname = g_strconcat(alias, " ", name, NULL); + } else + busname = g_strdup(alias); + + player = g_new0(struct player, 1); + player->bus_name = mpris_busname(busname); + player->proxy = g_dbus_proxy_ref(proxy); + player->device = device; + + g_free(busname); + + players = g_slist_prepend(players, player); + + printf("Player %s created\n", player->bus_name); + + player->conn = g_dbus_setup_private(DBUS_BUS_SESSION, player->bus_name, + NULL); + if (!session) { + fprintf(stderr, "Could not register bus name %s", + player->bus_name); + goto fail; + } + + if (!g_dbus_register_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_INTERFACE, + mpris_methods, + NULL, + mpris_properties, + player, NULL)) { + fprintf(stderr, "Could not register interface %s", + MPRIS_INTERFACE); + goto fail; + } + + if (!g_dbus_register_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE, + player_methods, + player_signals, + player_properties, + player, player_free)) { + fprintf(stderr, "Could not register interface %s", + MPRIS_PLAYER_INTERFACE); + goto fail; + } + + if (!g_dbus_register_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE, + tracklist_methods, + tracklist_signals, + tracklist_properties, + player, NULL)) { + fprintf(stderr, "Could not register interface %s", + MPRIS_TRACKLIST_INTERFACE); + goto fail; + } + + if (!g_dbus_register_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYLISTS_INTERFACE, + playlist_methods, + NULL, + playlist_properties, + player, NULL)) { + fprintf(stderr, "Could not register interface %s", + MPRIS_PLAYLISTS_INTERFACE); + goto fail; + } + + transport = find_transport_by_path(path); + if (transport) + player->transport = g_dbus_proxy_ref(transport); + + return; + +fail: + players = g_slist_remove(players, player); + player_free(player); +} + +static struct player *find_player_by_device(const char *device) +{ + GSList *l; + + for (l = players; l; l = l->next) { + struct player *player = l->data; + const char *path = g_dbus_proxy_get_path(player->device); + + if (g_strcmp0(device, path) == 0) + return player; + } + + return NULL; +} + +static void register_transport(GDBusProxy *proxy) +{ + struct player *player; + DBusMessageIter iter; + const char *path; + + if (g_slist_find(transports, proxy) != NULL) + return; + + if (!g_dbus_proxy_get_property(proxy, "Volume", &iter)) + return; + + if (!g_dbus_proxy_get_property(proxy, "Device", &iter)) + return; + + dbus_message_iter_get_basic(&iter, &path); + + transports = g_slist_append(transports, proxy); + + player = find_player_by_device(path); + if (player == NULL || player->transport != NULL) + return; + + player->transport = g_dbus_proxy_ref(proxy); +} + +static struct player *find_player_by_item(const char *item) +{ + GSList *l; + + for (l = players; l; l = l->next) { + struct player *player = l->data; + const char *path = g_dbus_proxy_get_path(player->proxy); + + if (g_str_has_prefix(item, path)) + return player; + } + + return NULL; +} + +static void register_playlist(struct player *player, GDBusProxy *proxy) +{ + const char *path; + DBusMessageIter iter; + + if (!g_dbus_proxy_get_property(player->proxy, "Playlist", &iter)) + return; + + dbus_message_iter_get_basic(&iter, &path); + + if (!g_str_equal(path, g_dbus_proxy_get_path(proxy))) + return; + + player->playlist = g_dbus_proxy_ref(proxy); + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYLISTS_INTERFACE, + "PlaylistCount"); + + if (player->tracklist == NULL) + return; + + g_dbus_proxy_method_call(player->tracklist->proxy, "ChangeFolder", + change_folder_setup, change_folder_reply, + player, NULL); +} + +static void register_item(struct player *player, GDBusProxy *proxy) +{ + struct tracklist *tracklist; + const char *path, *playlist; + DBusMessage *signal; + DBusMessageIter iter, args, metadata; + GSList *l; + GDBusProxy *after; + + if (player->playlist == NULL) { + register_playlist(player, proxy); + return; + } + + tracklist = player->tracklist; + if (tracklist == NULL) + return; + + path = g_dbus_proxy_get_path(proxy); + playlist = g_dbus_proxy_get_path(player->playlist); + if (!g_str_has_prefix(path, playlist)) + return; + + l = g_slist_last(tracklist->items); + tracklist->items = g_slist_append(tracklist->items, proxy); + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE, + "Tracks"); + + if (l == NULL) + return; + + signal = dbus_message_new_signal(MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE, + "TrackAdded"); + if (!signal) { + fprintf(stderr, "Unable to allocate new %s.TrackAdded signal", + MPRIS_TRACKLIST_INTERFACE); + return; + } + + dbus_message_iter_init_append(signal, &args); + + if (!g_dbus_proxy_get_property(proxy, "Metadata", &iter)) { + dbus_message_unref(signal); + return; + } + + dbus_message_iter_open_container(&args, DBUS_TYPE_ARRAY, + DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING + DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING + DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &metadata); + + parse_metadata(&iter, &metadata, parse_track_entry); + + dbus_message_iter_close_container(&args, &metadata); + + after = l->data; + path = g_dbus_proxy_get_path(after); + dbus_message_iter_append_basic(&args, DBUS_TYPE_OBJECT_PATH, &path); + + g_dbus_send_message(player->conn, signal); +} + +static void proxy_added(GDBusProxy *proxy, void *user_data) +{ + const char *interface; + const char *path; + + interface = g_dbus_proxy_get_interface(proxy); + path = g_dbus_proxy_get_path(proxy); + + if (!strcmp(interface, BLUEZ_ADAPTER_INTERFACE)) { + if (adapter != NULL) + return; + + printf("Bluetooth Adapter %s found\n", path); + adapter = proxy; + list_names(session); + } else if (!strcmp(interface, BLUEZ_MEDIA_PLAYER_INTERFACE)) { + printf("Bluetooth Player %s found\n", path); + register_player(proxy); + } else if (!strcmp(interface, BLUEZ_MEDIA_TRANSPORT_INTERFACE)) { + printf("Bluetooth Transport %s found\n", path); + register_transport(proxy); + } else if (!strcmp(interface, BLUEZ_MEDIA_FOLDER_INTERFACE)) { + printf("Bluetooth Folder %s found\n", path); + register_tracklist(proxy); + } else if (!strcmp(interface, BLUEZ_MEDIA_ITEM_INTERFACE)) { + struct player *player; + + player = find_player_by_item(path); + if (player == NULL) + return; + + printf("Bluetooth Item %s found\n", path); + register_item(player, proxy); + } +} + +static void unregister_player(struct player *player) +{ + players = g_slist_remove(players, player); + + if (player->tracklist != NULL) { + g_dbus_unregister_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYLISTS_INTERFACE); + g_dbus_unregister_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE); + } + + g_dbus_unregister_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_INTERFACE); + + g_dbus_unregister_interface(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE); +} + +static struct player *find_player_by_transport(GDBusProxy *proxy) +{ + GSList *l; + + for (l = players; l; l = l->next) { + struct player *player = l->data; + + if (player->transport == proxy) + return player; + } + + return NULL; +} + +static void unregister_transport(GDBusProxy *proxy) +{ + struct player *player; + + if (g_slist_find(transports, proxy) == NULL) + return; + + transports = g_slist_remove(transports, proxy); + + player = find_player_by_transport(proxy); + if (player == NULL) + return; + + g_dbus_proxy_unref(player->transport); + player->transport = NULL; +} + +static void unregister_item(struct player *player, GDBusProxy *proxy) +{ + struct tracklist *tracklist = player->tracklist; + const char *path; + + if (tracklist == NULL) + return; + + if (g_slist_find(tracklist->items, proxy) == NULL) + return; + + path = g_dbus_proxy_get_path(proxy); + + tracklist->items = g_slist_remove(tracklist->items, proxy); + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE, + "Tracks"); + + g_dbus_emit_signal(player->conn, MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE, "TrackRemoved", + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID); +} + +static void remove_players(DBusConnection *conn) +{ + char **paths; + int i; + + dbus_connection_list_registered(conn, "/", &paths); + + for (i = 0; paths[i]; i++) { + char *path; + void *data; + + path = g_strdup_printf("/%s", paths[i]); + dbus_connection_get_object_path_data(sys, path, &data); + dbus_connection_unregister_object_path(sys, path); + + g_free(path); + g_free(data); + } + + dbus_free_string_array(paths); +} + +static void proxy_removed(GDBusProxy *proxy, void *user_data) +{ + const char *interface; + const char *path; + + if (adapter == NULL) + return; + + interface = g_dbus_proxy_get_interface(proxy); + path = g_dbus_proxy_get_path(proxy); + + if (strcmp(interface, BLUEZ_ADAPTER_INTERFACE) == 0) { + if (adapter != proxy) + return; + printf("Bluetooth Adapter %s removed\n", path); + adapter = NULL; + remove_players(sys); + } else if (strcmp(interface, BLUEZ_MEDIA_PLAYER_INTERFACE) == 0) { + struct player *player; + + player = find_player(proxy); + if (player == NULL) + return; + + printf("Bluetooth Player %s removed\n", path); + unregister_player(player); + } else if (strcmp(interface, BLUEZ_MEDIA_TRANSPORT_INTERFACE) == 0) { + printf("Bluetooth Transport %s removed\n", path); + unregister_transport(proxy); + } else if (strcmp(interface, BLUEZ_MEDIA_ITEM_INTERFACE) == 0) { + struct player *player; + + player = find_player_by_item(path); + if (player == NULL) + return; + + printf("Bluetooth Item %s removed\n", path); + unregister_item(player, proxy); + } +} + +static const char *property_to_mpris(const char *property) +{ + if (strcasecmp(property, "Repeat") == 0) + return "LoopStatus"; + else if (strcasecmp(property, "Shuffle") == 0) + return "Shuffle"; + else if (strcasecmp(property, "Status") == 0) + return "PlaybackStatus"; + else if (strcasecmp(property, "Position") == 0) + return "Position"; + else if (strcasecmp(property, "Track") == 0) + return "Metadata"; + + return NULL; +} + +static void player_property_changed(GDBusProxy *proxy, const char *name, + DBusMessageIter *iter, void *user_data) +{ + struct player *player; + const char *property; + uint32_t position; + uint64_t value; + + player = find_player(proxy); + if (player == NULL) + return; + + property = property_to_mpris(name); + if (property == NULL) + return; + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE, + property); + + if (strcasecmp(name, "Position") != 0) + return; + + dbus_message_iter_get_basic(iter, &position); + + value = position * 1000; + + g_dbus_emit_signal(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE, "Seeked", + DBUS_TYPE_INT64, &value, + DBUS_TYPE_INVALID); +} + +static void transport_property_changed(GDBusProxy *proxy, const char *name, + DBusMessageIter *iter, void *user_data) +{ + struct player *player; + DBusMessageIter var; + const char *path; + + if (strcasecmp(name, "Volume") != 0 && strcasecmp(name, "State") != 0) + return; + + if (!g_dbus_proxy_get_property(proxy, "Device", &var)) + return; + + dbus_message_iter_get_basic(&var, &path); + + player = find_player_by_device(path); + if (player == NULL) + return; + + if (strcasecmp(name, "State") == 0) { + if (!g_dbus_proxy_get_property(player->proxy, "Status", &var)) + g_dbus_emit_property_changed(player->conn, + MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE, + "PlaybackStatus"); + return; + } + + g_dbus_emit_property_changed(player->conn, MPRIS_PLAYER_PATH, + MPRIS_PLAYER_INTERFACE, + name); +} + +static void item_property_changed(GDBusProxy *proxy, const char *name, + DBusMessageIter *iter, void *user_data) +{ + struct player *player; + DBusMessage *signal; + DBusMessageIter args; + const char *path; + + path = g_dbus_proxy_get_path(proxy); + + player = find_player_by_item(path); + if (player == NULL) + return; + + if (strcasecmp(name, "Metadata") != 0) + return; + + signal = dbus_message_new_signal(MPRIS_PLAYER_PATH, + MPRIS_TRACKLIST_INTERFACE, + "TrackMetadataChanged"); + if (!signal) { + fprintf(stderr, "Unable to allocate new %s.TrackAdded signal", + MPRIS_TRACKLIST_INTERFACE); + return; + } + + dbus_message_iter_init_append(signal, &args); + + dbus_message_iter_append_basic(&args, DBUS_TYPE_OBJECT_PATH, &path); + + append_iter(&args, iter); + + g_dbus_send_message(player->conn, signal); +} + +static void property_changed(GDBusProxy *proxy, const char *name, + DBusMessageIter *iter, void *user_data) +{ + const char *interface; + + interface = g_dbus_proxy_get_interface(proxy); + + if (strcmp(interface, BLUEZ_MEDIA_PLAYER_INTERFACE) == 0) + return player_property_changed(proxy, name, iter, user_data); + + if (strcmp(interface, BLUEZ_MEDIA_TRANSPORT_INTERFACE) == 0) + return transport_property_changed(proxy, name, iter, + user_data); + + if (strcmp(interface, BLUEZ_MEDIA_ITEM_INTERFACE) == 0) + return item_property_changed(proxy, name, iter, user_data); +} + +int main(int argc, char *argv[]) +{ + GOptionContext *context; + GError *error = NULL; + guint owner_watch, properties_watch, signal_watch; + struct sigaction sa; + + context = g_option_context_new(NULL); + g_option_context_add_main_entries(context, options, NULL); + + if (g_option_context_parse(context, &argc, &argv, &error) == FALSE) { + if (error != NULL) { + g_printerr("%s\n", error->message); + g_error_free(error); + } else + g_printerr("An unknown error occurred\n"); + exit(1); + } + + g_option_context_free(context); + + if (option_version == TRUE) { + usage(); + exit(0); + } + + main_loop = g_main_loop_new(NULL, FALSE); + + sys = g_dbus_setup_bus(DBUS_BUS_SYSTEM, NULL, NULL); + if (!sys) { + fprintf(stderr, "Can't get on system bus"); + exit(1); + } + + session = g_dbus_setup_bus(DBUS_BUS_SESSION, NULL, NULL); + if (!session) { + fprintf(stderr, "Can't get on session bus"); + exit(1); + } + + owner_watch = g_dbus_add_signal_watch(session, NULL, NULL, + DBUS_INTERFACE_DBUS, + "NameOwnerChanged", + name_owner_changed, + NULL, NULL); + + properties_watch = g_dbus_add_properties_watch(session, NULL, NULL, + MPRIS_PLAYER_INTERFACE, + player_signal, + NULL, NULL); + + signal_watch = g_dbus_add_signal_watch(session, NULL, NULL, + MPRIS_PLAYER_INTERFACE, + NULL, player_signal, + NULL, NULL); + + memset(&sa, 0, sizeof(sa)); + sa.sa_flags = SA_NOCLDSTOP; + sa.sa_handler = sig_term; + sigaction(SIGTERM, &sa, NULL); + sigaction(SIGINT, &sa, NULL); + + client = g_dbus_client_new(sys, BLUEZ_BUS_NAME, BLUEZ_PATH); + + g_dbus_client_set_connect_watch(client, connect_handler, NULL); + g_dbus_client_set_disconnect_watch(client, disconnect_handler, NULL); + + g_dbus_client_set_proxy_handlers(client, proxy_added, proxy_removed, + property_changed, NULL); + + g_main_loop_run(main_loop); + + g_dbus_remove_watch(session, owner_watch); + g_dbus_remove_watch(session, properties_watch); + g_dbus_remove_watch(session, signal_watch); + + g_dbus_client_unref(client); + + dbus_connection_unref(session); + dbus_connection_unref(sys); + + g_main_loop_unref(main_loop); + + return 0; +} |