signal-desktop/app/permissions.js
2020-11-04 13:03:13 -06:00

64 lines
2 KiB
JavaScript

// Copyright 2018-2020 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
// The list of permissions is here:
// https://electronjs.org/docs/api/session#sessetpermissionrequesthandlerhandler
const PERMISSIONS = {
// Allowed
fullscreen: true, // required to show videos in full-screen
notifications: true, // required to show OS notifications for new messages
// Off by default, can be enabled by user
media: false, // required for access to microphone and camera, used for voice notes and calling
// Not allowed
geolocation: false,
midiSysex: false,
openExternal: false, // we don't need this; we open links via 'will-navigate' event
pointerLock: false,
};
function _createPermissionHandler(userConfig) {
return (webContents, permission, callback, details) => {
// We default 'media' permission to false, but the user can override that for
// the microphone and camera.
if (
permission === 'media' &&
details.mediaTypes.includes('audio') &&
userConfig.get('mediaPermissions')
) {
return callback(true);
}
if (
permission === 'media' &&
details.mediaTypes.includes('video') &&
userConfig.get('mediaCameraPermissions')
) {
return callback(true);
}
if (PERMISSIONS[permission]) {
console.log(`Approving request for permission '${permission}'`);
return callback(true);
}
console.log(`Denying request for permission '${permission}'`);
return callback(false);
};
}
function installPermissionsHandler({ session, userConfig }) {
// Setting the permission request handler to null first forces any permissions to be
// requested again. Without this, revoked permissions might still be available if
// they've already been used successfully.
session.defaultSession.setPermissionRequestHandler(null);
session.defaultSession.setPermissionRequestHandler(
_createPermissionHandler(userConfig)
);
}
module.exports = {
installPermissionsHandler,
};