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notificationDaemon: Catch exceptions while loading notifications

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An Endless OS system was found in the wild with a malformed
.local/share/gnome-shell/notifications which causes _loadNotifications()
to raise an exception. This exception was not previously handled and
bubbles all the way out to gnome_shell_plugin_start(), whereupon the
shell exit(1)s. The user could no longer log into their computer.

Handle exceptions from _loadNotifications(), log them, and attempt to
continue. Ensure that this._isLoading is set to 'false' even on error,
so that future calls to _saveNotifications() can overwrite the (corrupt)
state file.

https://gitlab.gnome.org/GNOME/gnome-shell/issues/1552
This commit is contained in:
Will Thompson 2019-08-28 15:38:03 +01:00 committed by Florian Müllner
parent a207f67f73
commit e5cde4700f
1 changed files with 23 additions and 19 deletions
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6
js/ui/notificationDaemon.js
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@ -750,6 +750,7 @@ var GtkNotificationDaemon = class GtkNotificationDaemon {
_loadNotifications() { _loadNotifications() {
this._isLoading = true; this._isLoading = true;
try {
let value = global.get_persistent_state('a(sa(sv))', 'notifications'); let value = global.get_persistent_state('a(sa(sv))', 'notifications');
if (value) { if (value) {
let sources = value.deep_unpack(); let sources = value.deep_unpack();
@ -771,9 +772,12 @@ var GtkNotificationDaemon = class GtkNotificationDaemon {
}); });
}); });
} }
} catch (e) {
logError(e, 'Failed to load saved notifications');
} finally {
this._isLoading = false; this._isLoading = false;
} }
}
_saveNotifications() { _saveNotifications() {
if (this._isLoading) if (this._isLoading)