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Fix a crash when players use certain MPRIS interfaces

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Some players, including VLC, will try to message playerctld on
the following interfaces:
* org.mpris.MediaPlayer2.TrackLis
* org.mpris.MediaPlayer2.Playlists
These are standard-compliant, but playerctld did not know about them
and would crash on receiving such messages.
This commit is contained in:
Sara Johnsson
2020-12-29 16:27:23 +01:00
parent 94b4694a7e
commit edb76160f9
1 changed files with 8 additions and 4 deletions
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12
playerctl/playerctl-daemon.c
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@@ -9,6 +9,8 @@
#define DBUS_PATH "/org/freedesktop/DBus"
#define PLAYER_INTERFACE "org.mpris.MediaPlayer2.Player"
#define ROOT_INTERFACE "org.mpris.MediaPlayer2"
#define PLAYLISTS_INTERFACE "org.mpris.MediaPlayer2.Playlists"
#define TRACKLIST_INTERFACE "org.mpris.MediaPlayer2.TrackList"
#define PROPERTIES_INTERFACE "org.freedesktop.DBus.Properties"
#define PLAYERCTLD_INTERFACE "com.github.altdesktop.playerctld"
@@ -85,13 +87,15 @@ static gboolean player_update_properties(struct Player *player, const char *inte
GVariantDict cached_properties;
GVariantIter iter;
GVariant *child;
bool is_player_interface = false; // otherwise, the root interface
bool is_root_interface = false;
if (g_strcmp0(interface_name, PLAYER_INTERFACE) == 0) {
if (g_strcmp0(interface_name, PLAYER_INTERFACE) == 0 ||
g_strcmp0(interface_name, TRACKLIST_INTERFACE) == 0 ||
g_strcmp0(interface_name, PLAYLISTS_INTERFACE) == 0) {
g_variant_dict_init(&cached_properties, player->player_properties);
is_player_interface = true;
} else if (g_strcmp0(interface_name, ROOT_INTERFACE) == 0) {
g_variant_dict_init(&cached_properties, player->root_properties);
is_root_interface = true;
} else {
g_error("cannot update properties for unknown interface: %s", interface_name);
assert(false);
@@ -108,7 +112,7 @@ static gboolean player_update_properties(struct Player *player, const char *inte
GVariant *prop_variant = g_variant_get_child_value(child, 1);
GVariant *prop_value = g_variant_get_variant(prop_variant);
// g_debug("key=%s, value=%s", key, g_variant_print(prop_value, TRUE));
if (is_player_interface && g_strcmp0(key, "Position") == 0) {
if ( ! is_root_interface && g_strcmp0(key, "Position") == 0) {
// gets cached separately (never counts as changed)
player->position = g_variant_get_int64(prop_value);
goto loop_out;