gnome-shell/js/dbusServices/extensions/extensionsService.js

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dbusServices/extensions: Proxy Extensions API Similar to the previously added org.freedesktop.Notifications proxy, this exposes the org.gnome.Shell.Extensions API and forwards any request to the real implementation in gnome-shell. The motivation differs though: We want to be able to package the extension app as flatpak and distribute it separately, but the extension prefs dialog is hard to impossible to sandbox: - filenames need translating between host and sandbox, and we can only do that in some cases (serializing/deserializing extensions), but not others (extension settings that refer to files) - system extensions install their GSettings schemas in the system path; the best we can do there is assume a host prefix of /usr and set GSETTINGS_SCHEMA_DIR in the flatpak (eeks) - extensions may rely on additional typelibs that are present on the host (for example because gnome-shell itself depends on them), but not inside the sandbox - unless we bundle all of gnome-shell's dependencies - if gjs/mozjs differ between host and sandbox, extensions must handle different runtimes for the extension and its prefs And all those issues occur despite a very permissive sandbox (full host filesystem access, full dconf access, full org.gnome.Shell access (including Eval()!)). This new service will give us an alternative place for handling the preference dialog: - it runs outside of gnome-shell process, so can open windows - it runs on the host, so the extension's prefs get to run in the same namespace as the extension itself That is, the service will provide portal-like functionality (albeit not using the org.freedesktop.portal.* namespace, as extension management is an inherently privileged operation). https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1106
2020-03-04 03:02:28 +00:00
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported ExtensionsService */
const { Gdk, Gio, GLib, GObject, Gtk } = imports.gi;
const ExtensionUtils = imports.misc.extensionUtils;
dbusServices/extensions: Proxy Extensions API Similar to the previously added org.freedesktop.Notifications proxy, this exposes the org.gnome.Shell.Extensions API and forwards any request to the real implementation in gnome-shell. The motivation differs though: We want to be able to package the extension app as flatpak and distribute it separately, but the extension prefs dialog is hard to impossible to sandbox: - filenames need translating between host and sandbox, and we can only do that in some cases (serializing/deserializing extensions), but not others (extension settings that refer to files) - system extensions install their GSettings schemas in the system path; the best we can do there is assume a host prefix of /usr and set GSETTINGS_SCHEMA_DIR in the flatpak (eeks) - extensions may rely on additional typelibs that are present on the host (for example because gnome-shell itself depends on them), but not inside the sandbox - unless we bundle all of gnome-shell's dependencies - if gjs/mozjs differ between host and sandbox, extensions must handle different runtimes for the extension and its prefs And all those issues occur despite a very permissive sandbox (full host filesystem access, full dconf access, full org.gnome.Shell access (including Eval()!)). This new service will give us an alternative place for handling the preference dialog: - it runs outside of gnome-shell process, so can open windows - it runs on the host, so the extension's prefs get to run in the same namespace as the extension itself That is, the service will provide portal-like functionality (albeit not using the org.freedesktop.portal.* namespace, as extension management is an inherently privileged operation). https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1106
2020-03-04 03:02:28 +00:00
const { loadInterfaceXML } = imports.misc.fileUtils;
const { ServiceImplementation } = imports.dbusService;
const ExtensionsIface = loadInterfaceXML('org.gnome.Shell.Extensions');
const ExtensionsProxy = Gio.DBusProxy.makeProxyWrapper(ExtensionsIface);
var ExtensionsService = class extends ServiceImplementation {
constructor() {
super(ExtensionsIface, '/org/gnome/Shell/Extensions');
this._proxy = new ExtensionsProxy(Gio.DBus.session,
'org.gnome.Shell', '/org/gnome/Shell');
this._proxy.connectSignal('ExtensionStateChanged',
(proxy, sender, params) => {
this._dbusImpl.emit_signal('ExtensionStateChanged',
new GLib.Variant('(sa{sv})', params));
});
this._proxy.connect('g-properties-changed', () => {
this._dbusImpl.emit_property_changed('UserExtensionsEnabled',
new GLib.Variant('b', this._proxy.UserExtensionsEnabled));
});
}
get ShellVersion() {
return this._proxy.ShellVersion;
}
get UserExtensionsEnabled() {
return this._proxy.UserExtensionsEnabled;
}
set UserExtensionsEnabled(enable) {
this._proxy.UserExtensionsEnabled = enable;
}
ListExtensionsAsync(params, invocation) {
this._proxy.ListExtensionsRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(a{sa{sv}})', res));
});
}
GetExtensionInfoAsync(params, invocation) {
this._proxy.GetExtensionInfoRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(a{sv})', res));
});
}
GetExtensionErrorsAsync(params, invocation) {
this._proxy.GetExtensionErrorsRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(as)', res));
});
}
InstallRemoteExtensionAsync(params, invocation) {
this._proxy.InstallRemoteExtensionRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(s)', res));
});
}
UninstallExtensionAsync(params, invocation) {
this._proxy.UninstallExtensionRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(b)', res));
});
}
EnableExtensionAsync(params, invocation) {
this._proxy.EnableExtensionRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(b)', res));
});
}
DisableExtensionAsync(params, invocation) {
this._proxy.DisableExtensionRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(new GLib.Variant('(b)', res));
});
}
LaunchExtensionPrefsAsync([uuid], invocation) {
this.OpenExtensionPrefsAsync([uuid, '', {}], invocation);
}
OpenExtensionPrefsAsync(params, invocation) {
const [uuid, parentWindow_, options] = params;
this._proxy.GetExtensionInfoRemote(uuid, (res, error) => {
dbusServices/extensions: Proxy Extensions API Similar to the previously added org.freedesktop.Notifications proxy, this exposes the org.gnome.Shell.Extensions API and forwards any request to the real implementation in gnome-shell. The motivation differs though: We want to be able to package the extension app as flatpak and distribute it separately, but the extension prefs dialog is hard to impossible to sandbox: - filenames need translating between host and sandbox, and we can only do that in some cases (serializing/deserializing extensions), but not others (extension settings that refer to files) - system extensions install their GSettings schemas in the system path; the best we can do there is assume a host prefix of /usr and set GSETTINGS_SCHEMA_DIR in the flatpak (eeks) - extensions may rely on additional typelibs that are present on the host (for example because gnome-shell itself depends on them), but not inside the sandbox - unless we bundle all of gnome-shell's dependencies - if gjs/mozjs differ between host and sandbox, extensions must handle different runtimes for the extension and its prefs And all those issues occur despite a very permissive sandbox (full host filesystem access, full dconf access, full org.gnome.Shell access (including Eval()!)). This new service will give us an alternative place for handling the preference dialog: - it runs outside of gnome-shell process, so can open windows - it runs on the host, so the extension's prefs get to run in the same namespace as the extension itself That is, the service will provide portal-like functionality (albeit not using the org.freedesktop.portal.* namespace, as extension management is an inherently privileged operation). https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1106
2020-03-04 03:02:28 +00:00
if (this._handleError(invocation, error))
return;
const [serialized] = res;
const extension = ExtensionUtils.deserializeExtension(serialized);
const window = new ExtensionPrefsDialog(extension);
if (options.modal)
window.modal = options.modal.get_boolean();
window.connect('destroy', () => this.release());
this.hold();
window.show();
dbusServices/extensions: Proxy Extensions API Similar to the previously added org.freedesktop.Notifications proxy, this exposes the org.gnome.Shell.Extensions API and forwards any request to the real implementation in gnome-shell. The motivation differs though: We want to be able to package the extension app as flatpak and distribute it separately, but the extension prefs dialog is hard to impossible to sandbox: - filenames need translating between host and sandbox, and we can only do that in some cases (serializing/deserializing extensions), but not others (extension settings that refer to files) - system extensions install their GSettings schemas in the system path; the best we can do there is assume a host prefix of /usr and set GSETTINGS_SCHEMA_DIR in the flatpak (eeks) - extensions may rely on additional typelibs that are present on the host (for example because gnome-shell itself depends on them), but not inside the sandbox - unless we bundle all of gnome-shell's dependencies - if gjs/mozjs differ between host and sandbox, extensions must handle different runtimes for the extension and its prefs And all those issues occur despite a very permissive sandbox (full host filesystem access, full dconf access, full org.gnome.Shell access (including Eval()!)). This new service will give us an alternative place for handling the preference dialog: - it runs outside of gnome-shell process, so can open windows - it runs on the host, so the extension's prefs get to run in the same namespace as the extension itself That is, the service will provide portal-like functionality (albeit not using the org.freedesktop.portal.* namespace, as extension management is an inherently privileged operation). https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1106
2020-03-04 03:02:28 +00:00
invocation.return_value(null);
});
}
CheckForUpdatesAsync(params, invocation) {
this._proxy.CheckForUpdatesRemote(...params, (res, error) => {
if (this._handleError(invocation, error))
return;
invocation.return_value(null);
});
}
};
var ExtensionPrefsDialog = GObject.registerClass({
GTypeName: 'ExtensionPrefsDialog',
Template: 'resource:///org/gnome/Shell/Extensions/ui/extension-prefs-dialog.ui',
InternalChildren: [
'headerBar',
'stack',
'expander',
'expanderArrow',
'revealer',
'errorView',
],
}, class ExtensionPrefsDialog extends Gtk.Window {
_init(extension) {
super._init();
this._uuid = extension.uuid;
this._url = extension.metadata.url || '';
this._headerBar.title = extension.metadata.name;
this._actionGroup = new Gio.SimpleActionGroup();
this.insert_action_group('win', this._actionGroup);
this._initActions();
this._addCustomStylesheet();
this._gesture = new Gtk.GestureMultiPress({
widget: this._expander,
button: 0,
exclusive: true,
});
this._gesture.connect('released', (gesture, nPress) => {
if (nPress === 1)
this._revealer.reveal_child = !this._revealer.reveal_child;
});
this._revealer.connect('notify::reveal-child', () => {
this._expanderArrow.icon_name = this._revealer.reveal_child
? 'pan-down-symbolic'
: 'pan-end-symbolic';
});
try {
ExtensionUtils.installImporter(extension);
// give extension prefs access to their own extension object
ExtensionUtils.getCurrentExtension = () => extension;
const prefsModule = extension.imports.prefs;
prefsModule.init(extension.metadata);
const widget = prefsModule.buildPrefsWidget();
this._stack.add(widget);
this._stack.visible_child = widget;
} catch (e) {
this._setError(e);
}
}
_setError(exc) {
this._errorView.buffer.text = `${exc}\n\nStack trace:\n`;
// Indent stack trace.
this._errorView.buffer.text +=
exc.stack.split('\n').map(line => ` ${line}`).join('\n');
// markdown for pasting in gitlab issues
let lines = [
`The settings of extension ${this._uuid} had an error:`,
'```',
`${exc}`,
'```',
'',
'Stack trace:',
'```',
exc.stack.replace(/\n$/, ''), // stack without trailing newline
'```',
'',
];
this._errorMarkdown = lines.join('\n');
this._actionGroup.lookup('copy-error').enabled = true;
}
_initActions() {
let action;
action = new Gio.SimpleAction({
name: 'copy-error',
enabled: false,
});
action.connect('activate', () => {
const clipboard = Gtk.Clipboard.get_default(this.get_display());
clipboard.set_text(this._errorMarkdown, -1);
});
this._actionGroup.add_action(action);
action = new Gio.SimpleAction({
name: 'show-url',
enabled: this._url !== '',
});
action.connect('activate', () => {
Gio.AppInfo.launch_default_for_uri(this._url,
this.get_display().get_app_launch_context());
});
this._actionGroup.add_action(action);
}
_addCustomStylesheet() {
let provider = new Gtk.CssProvider();
let uri = 'resource:///org/gnome/Shell/Extensions/css/application.css';
try {
provider.load_from_file(Gio.File.new_for_uri(uri));
} catch (e) {
logError(e, 'Failed to add application style');
}
Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(),
provider,
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
}
});