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util: Wait for initial name owners in DBusSenderCheck before checking

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Otherwise an allowed caller might get rejected if the call is right
after a gnome-shell restart and the watchers have not finished running
their callbacks yet.

Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4813
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2048>
This commit is contained in:
Sebastian Keller 2021-11-23 02:48:04 +01:00 committed by Marge Bot
parent 37271ffe70
commit 85609a232d
4 changed files with 65 additions and 38 deletions
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8
js/misc/introspect.js
View File

@ -117,9 +117,9 @@ var IntrospectService = class {
type == Meta.WindowType.UTILITY;
}
GetRunningApplicationsAsync(params, invocation) {
async GetRunningApplicationsAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -128,13 +128,13 @@ var IntrospectService = class {
invocation.return_value(new GLib.Variant('(a{sa{sv}})', [this._runningApplications]));
}
GetWindowsAsync(params, invocation) {
async GetWindowsAsync(params, invocation) {
let focusWindow = global.display.get_focus_window();
let apps = this._appSystem.get_running();
let windowsList = {};
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;

33
js/misc/util.js
View File

@ -486,20 +486,42 @@ var DBusSenderChecker = class {
constructor(allowList) {
this._allowlistMap = new Map();
this._uninitializedNames = new Set(allowList);
this._initializedPromise = new Promise(resolve => {
this._resolveInitialized = resolve;
});
this._watchList = allowList.map(name => {
return Gio.DBus.watch_name(Gio.BusType.SESSION,
name,
Gio.BusNameWatcherFlags.NONE,
(conn_, name_, owner) => this._allowlistMap.set(name, owner),
() => this._allowlistMap.delete(name));
(conn_, name_, owner) => {
this._allowlistMap.set(name, owner);
this._checkAndResolveInitialized(name);
},
() => {
this._allowlistMap.delete(name);
this._checkAndResolveInitialized(name);
});
});
}
/**
* @param {string} name - bus name for which the watcher got initialized
*/
_checkAndResolveInitialized(name) {
if (this._uninitializedNames.delete(name) &&
this._uninitializedNames.size === 0)
this._resolveInitialized();
}
/**
* @async
* @param {string} sender - the bus name that invoked the checked method
* @returns {bool}
*/
_isSenderAllowed(sender) {
async _isSenderAllowed(sender) {
await this._initializedPromise;
return [...this._allowlistMap.values()].includes(sender);
}
@ -507,15 +529,16 @@ var DBusSenderChecker = class {
* Check whether the bus name that invoked @invocation maps
* to an entry in the allow list.
*
* @async
* @throws
* @param {Gio.DBusMethodInvocation} invocation - the invocation
* @returns {void}
*/
checkInvocation(invocation) {
async checkInvocation(invocation) {
if (global.context.unsafe_mode)
return;
if (this._isSenderAllowed(invocation.get_sender()))
if (await this._isSenderAllowed(invocation.get_sender()))
return;
throw new GLib.Error(Gio.DBusError,

18
js/ui/screenshot.js
View File

@ -37,7 +37,7 @@ var ScreenshotService = class {
Gio.DBus.session.own_name('org.gnome.Shell.Screenshot', Gio.BusNameOwnerFlags.REPLACE, null, null);
}
_createScreenshot(invocation, needsDisk = true, restrictCallers = true) {
async _createScreenshot(invocation, needsDisk = true, restrictCallers = true) {
let lockedDown = false;
if (needsDisk)
lockedDown = this._lockdownSettings.get_boolean('disable-save-to-disk');
@ -55,7 +55,7 @@ var ScreenshotService = class {
return null;
} else if (restrictCallers) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return null;
@ -200,7 +200,7 @@ var ScreenshotService = class {
"Invalid params");
return;
}
let screenshot = this._createScreenshot(invocation);
let screenshot = await this._createScreenshot(invocation);
if (!screenshot)
return;
@ -223,7 +223,7 @@ var ScreenshotService = class {
async ScreenshotWindowAsync(params, invocation) {
let [includeFrame, includeCursor, flash, filename] = params;
let screenshot = this._createScreenshot(invocation);
let screenshot = await this._createScreenshot(invocation);
if (!screenshot)
return;
@ -246,7 +246,7 @@ var ScreenshotService = class {
async ScreenshotAsync(params, invocation) {
let [includeCursor, flash, filename] = params;
let screenshot = this._createScreenshot(invocation);
let screenshot = await this._createScreenshot(invocation);
if (!screenshot)
return;
@ -269,7 +269,7 @@ var ScreenshotService = class {
async SelectAreaAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -289,9 +289,9 @@ var ScreenshotService = class {
}
}
FlashAreaAsync(params, invocation) {
async FlashAreaAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -311,7 +311,7 @@ var ScreenshotService = class {
}
async PickColorAsync(params, invocation) {
const screenshot = this._createScreenshot(invocation, false, false);
const screenshot = await this._createScreenshot(invocation, false, false);
if (!screenshot)
return;

44
js/ui/shellDBus.js
View File

@ -81,13 +81,14 @@ var GnomeShell = class {
/**
* Focus the overview's search entry
*
* @async
* @param {...any} params - method parameters
* @param {Gio.DBusMethodInvocation} invocation - the invocation
* @returns {void}
*/
FocusSearchAsync(params, invocation) {
async FocusSearchAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -100,13 +101,14 @@ var GnomeShell = class {
/**
* Show OSD with the specified parameters
*
* @async
* @param {...any} params - method parameters
* @param {Gio.DBusMethodInvocation} invocation - the invocation
* @returns {void}
*/
ShowOSDAsync([params], invocation) {
async ShowOSDAsync([params], invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -138,13 +140,14 @@ var GnomeShell = class {
/**
* Focus specified app in the overview's app grid
*
* @async
* @param {string} id - an application ID
* @param {Gio.DBusMethodInvocation} invocation - the invocation
* @returns {void}
*/
FocusAppAsync([id], invocation) {
async FocusAppAsync([id], invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -157,13 +160,14 @@ var GnomeShell = class {
/**
* Show the overview's app grid
*
* @async
* @param {...any} params - method parameters
* @param {Gio.DBusMethodInvocation} invocation - the invocation
* @returns {void}
*/
ShowApplicationsAsync(params, invocation) {
async ShowApplicationsAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -173,9 +177,9 @@ var GnomeShell = class {
invocation.return_value(null);
}
GrabAcceleratorAsync(params, invocation) {
async GrabAcceleratorAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -187,9 +191,9 @@ var GnomeShell = class {
invocation.return_value(GLib.Variant.new('(u)', [bindingAction]));
}
GrabAcceleratorsAsync(params, invocation) {
async GrabAcceleratorsAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -205,9 +209,9 @@ var GnomeShell = class {
invocation.return_value(GLib.Variant.new('(au)', [bindingActions]));
}
UngrabAcceleratorAsync(params, invocation) {
async UngrabAcceleratorAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -220,9 +224,9 @@ var GnomeShell = class {
invocation.return_value(GLib.Variant.new('(b)', [ungrabSucceeded]));
}
UngrabAcceleratorsAsync(params, invocation) {
async UngrabAcceleratorsAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -307,9 +311,9 @@ var GnomeShell = class {
this._grabbers.delete(name);
}
ShowMonitorLabelsAsync(params, invocation) {
async ShowMonitorLabelsAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;
@ -321,9 +325,9 @@ var GnomeShell = class {
invocation.return_value(null);
}
HideMonitorLabelsAsync(params, invocation) {
async HideMonitorLabelsAsync(params, invocation) {
try {
this._senderChecker.checkInvocation(invocation);
await this._senderChecker.checkInvocation(invocation);
} catch (e) {
invocation.return_gerror(e);
return;