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shellActionModes: disable POPUP keybindings in unlock screen

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Certain keybindings should continue to work even when a popup
menu is on screen. For instance, the keybinding for showing
the app menu and the keyinding for showing the calendar are
examples.

This is achieved by putting in place a special "POPUP" action
mode, whenever a popup menu is active.  This mode replaces
the (e.g., "NORMAL" or "OVERVIEW") action mode that was in place
for as long as the popup menu is active.

But those keybindings should not work when the user is at the
unlock dialog (which uses an action mode of "UNLOCK").

Unfortunately, since commit c79d24b6 they do.

This commit addresses the problem by forcing the action mode
to NONE at the unlock screen when popups are visible.

CVE-2019-3820

Closes https://gitlab.gnome.org/GNOME/gnome-shell/issues/851
This commit is contained in:
Ray Strode 2019-01-23 15:59:42 -05:00
parent 511e8c6584
commit e23f4d6c7c
3 changed files with 8 additions and 4 deletions
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3
js/gdm/authPrompt.js
View File

@ -11,6 +11,7 @@ const Animation = imports.ui.animation;
const Batch = imports.gdm.batch;
const GdmUtil = imports.gdm.util;
const Params = imports.misc.params;
const Shell = imports.gi.Shell;
const ShellEntry = imports.ui.shellEntry;
const Tweener = imports.ui.tweener;
const UserWidget = imports.ui.userWidget;
@ -99,7 +100,7 @@ var AuthPrompt = new Lang.Class({
x_align: St.Align.START });
this._entry = new St.Entry({ style_class: 'login-dialog-prompt-entry',
can_focus: true });
ShellEntry.addContextMenu(this._entry, { isPassword: true });
ShellEntry.addContextMenu(this._entry, { isPassword: true, actionMode: Shell.ActionMode.NONE });
this.actor.add(this._entry,
{ expand: true,

3
js/gdm/loginDialog.js
View File

@ -342,7 +342,8 @@ var SessionMenuButton = new Lang.Class({
this._button.remove_style_pseudo_class('active');
});
this._manager = new PopupMenu.PopupMenuManager({ actor: this._button });
this._manager = new PopupMenu.PopupMenuManager({ actor: this._button },
{ actionMode: Shell.ActionMode.NONE });
this._manager.addMenu(this._menu);
this._button.connect('clicked', () => { this._menu.toggle(); });

6
js/ui/shellEntry.js
View File

@ -9,6 +9,7 @@ const BoxPointer = imports.ui.boxpointer;
const Main = imports.ui.main;
const Params = imports.misc.params;
const PopupMenu = imports.ui.popupMenu;
const Shell = imports.gi.Shell;
var EntryMenu = new Lang.Class({
Name: 'ShellEntryMenu',
@ -150,11 +151,12 @@ function addContextMenu(entry, params) {
if (entry.menu)
return;
params = Params.parse (params, { isPassword: false });
params = Params.parse (params, { isPassword: false, actionMode: Shell.ActionMode.POPUP });
entry.menu = new EntryMenu(entry);
entry.menu.isPassword = params.isPassword;
entry._menuManager = new PopupMenu.PopupMenuManager({ actor: entry });
entry._menuManager = new PopupMenu.PopupMenuManager({ actor: entry },
{ actionMode: params.actionMode });
entry._menuManager.addMenu(entry.menu);
// Add an event handler to both the entry and its clutter_text; the former