gnome-shell/js/ui/extensionDownloader.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Lang = imports.lang;
const Clutter = imports.gi.Clutter;
const GLib = imports.gi.GLib;
const Gio = imports.gi.Gio;
const Soup = imports.gi.Soup;
const St = imports.gi.St;
const Shell = imports.gi.Shell;
const Config = imports.misc.config;
const ExtensionUtils = imports.misc.extensionUtils;
const ExtensionSystem = imports.ui.extensionSystem;
const FileUtils = imports.misc.fileUtils;
const ModalDialog = imports.ui.modalDialog;
const _signals = ExtensionSystem._signals;
const REPOSITORY_URL_BASE = 'https://extensions.gnome.org';
const REPOSITORY_URL_DOWNLOAD = REPOSITORY_URL_BASE + '/download-extension/%s.shell-extension.zip';
const REPOSITORY_URL_INFO = REPOSITORY_URL_BASE + '/extension-info/';
const REPOSITORY_URL_UPDATE = REPOSITORY_URL_BASE + '/update-info/';
let _httpSession;
function installExtension(uuid, invocation) {
let params = { uuid: uuid,
shell_version: Config.PACKAGE_VERSION };
let message = Soup.form_request_new_from_hash('GET', REPOSITORY_URL_INFO, params);
_httpSession.queue_message(message, function(session, message) {
if (message.status_code != Soup.KnownStatusCode.OK) {
ExtensionSystem.logExtensionError(uuid, 'downloading info: ' + message.status_code);
invocation.return_dbus_error('org.gnome.Shell.DownloadInfoError', message.status_code.toString());
return;
}
let info;
try {
info = JSON.parse(message.response_body.data);
} catch (e) {
ExtensionSystem.logExtensionError(uuid, 'parsing info: ' + e);
invocation.return_dbus_error('org.gnome.Shell.ParseInfoError', e.toString());
return;
}
let dialog = new InstallExtensionDialog(uuid, info, invocation);
dialog.open(global.get_current_time());
});
}
function uninstallExtension(uuid) {
let extension = ExtensionUtils.extensions[uuid];
if (!extension)
return false;
// Don't try to uninstall system extensions
if (extension.type != ExtensionUtils.ExtensionType.PER_USER)
return false;
if (!ExtensionSystem.unloadExtension(extension))
return false;
FileUtils.recursivelyDeleteDir(extension.dir, true);
return true;
}
function gotExtensionZipFile(session, message, uuid, dir, callback, errback) {
if (message.status_code != Soup.KnownStatusCode.OK) {
errback('DownloadExtensionError', message.status_code);
return;
}
try {
if (!dir.query_exists(null))
dir.make_directory_with_parents(null);
} catch (e) {
errback('CreateExtensionDirectoryError', e);
return;
}
let [file, stream] = Gio.File.new_tmp('XXXXXX.shell-extension.zip');
let contents = message.response_body.flatten().get_as_bytes();
stream.output_stream.write_bytes(contents, null);
stream.close(null);
let [success, pid] = GLib.spawn_async(null,
['unzip', '-uod', dir.get_path(), '--', file.get_path()],
null,
GLib.SpawnFlags.SEARCH_PATH | GLib.SpawnFlags.DO_NOT_REAP_CHILD,
null);
if (!success) {
errback('ExtractExtensionError');
return;
}
GLib.child_watch_add(GLib.PRIORITY_DEFAULT, pid, function(pid, status) {
GLib.spawn_close_pid(pid);
if (status != 0)
errback('ExtractExtensionError');
else
callback();
});
}
function updateExtension(uuid) {
// This gets a bit tricky. We want the update to be seamless -
// if we have any error during downloading or extracting, we
// want to not unload the current version.
let oldExtensionTmpDir = GLib.Dir.make_tmp('XXXXXX-shell-extension');
let newExtensionTmpDir = GLib.Dir.make_tmp('XXXXXX-shell-extension');
let params = { shell_version: Config.PACKAGE_VERSION };
let url = REPOSITORY_URL_DOWNLOAD.format(uuid);
let message = Soup.form_request_new_from_hash('GET', url, params);
_httpSession.queue_message(message, Lang.bind(this, function(session, message) {
gotExtensionZipFile(session, message, uuid, newExtensionTmpDir, function() {
let oldExtension = ExtensionUtils.extensions[uuid];
let extensionDir = oldExtension.dir;
if (!ExtensionSystem.unloadExtension(oldExtension))
return;
FileUtils.recursivelyMoveDir(extensionDir, oldExtensionTmpDir);
FileUtils.recursivelyMoveDir(newExtensionTmpDir, extensionDir);
let extension = ExtensionUtils.createExtensionObject(uuid, extensionDir, ExtensionUtils.ExtensionType.PER_USER);
try {
ExtensionSystem.loadExtension(extension);
} catch(e) {
ExtensionSystem.unloadExtension(extension);
logError(e, 'Error loading extension %s'.format(uuid));
FileUtils.recursivelyDeleteDir(extensionDir, false);
FileUtils.recursivelyMoveDir(oldExtensionTmpDir, extensionDir);
// Restore what was there before. We can't do much if we
// fail here.
ExtensionSystem.loadExtension(oldExtension);
return;
}
FileUtils.recursivelyDeleteDir(oldExtensionTmpDir, true);
}, function(code, message) {
log('Error while updating extension %s: %s (%s)'.format(uuid, code, message ? message : ''));
});
}));
}
function checkForUpdates() {
let metadatas = {};
for (let uuid in ExtensionUtils.extensions) {
metadatas[uuid] = ExtensionUtils.extensions[uuid].metadata;
}
let params = { shell_version: Config.PACKAGE_VERSION,
installed: JSON.stringify(metadatas) };
let url = REPOSITORY_URL_UPDATE;
let message = Soup.form_request_new_from_hash('GET', url, params);
_httpSession.queue_message(message, function(session, message) {
if (message.status_code != Soup.KnownStatusCode.OK)
return;
let operations = JSON.parse(message.response_body.data);
for (let uuid in operations) {
let operation = operations[uuid];
if (operation == 'blacklist')
uninstallExtension(uuid);
else if (operation == 'upgrade' || operation == 'downgrade')
updateExtension(uuid);
}
});
}
const InstallExtensionDialog = new Lang.Class({
Name: 'InstallExtensionDialog',
Extends: ModalDialog.ModalDialog,
_init: function(uuid, info, invocation) {
this.parent({ styleClass: 'extension-dialog' });
this._uuid = uuid;
this._info = info;
this._invocation = invocation;
this.setButtons([{ label: _("Cancel"),
action: Lang.bind(this, this._onCancelButtonPressed),
key: Clutter.Escape
},
{ label: _("Install"),
action: Lang.bind(this, this._onInstallButtonPressed),
default: true
}]);
let message = _("Download and install “%s” from extensions.gnome.org?").format(info.name);
let box = new St.BoxLayout({ style_class: 'prompt-dialog-main-layout',
vertical: false });
this.contentLayout.add(box);
let gicon = new Gio.FileIcon({ file: Gio.File.new_for_uri(REPOSITORY_URL_BASE + info.icon) })
let icon = new St.Icon({ gicon: gicon });
box.add(icon);
let label = new St.Label({ style_class: 'prompt-dialog-headline headline',
text: message });
box.add(label);
},
_onCancelButtonPressed: function(button, event) {
this.close();
this._invocation.return_value(GLib.Variant.new('(s)', ['cancelled']));
},
_onInstallButtonPressed: function(button, event) {
let params = { shell_version: Config.PACKAGE_VERSION };
let url = REPOSITORY_URL_DOWNLOAD.format(this._uuid);
let message = Soup.form_request_new_from_hash('GET', url, params);
let uuid = this._uuid;
let dir = Gio.File.new_for_path(GLib.build_filenamev([global.userdatadir, 'extensions', uuid]));
let invocation = this._invocation;
function errback(code, message) {
invocation.return_dbus_error('org.gnome.Shell.' + code, message ? message.toString() : '');
}
function callback() {
// Add extension to 'enabled-extensions' for the user, always...
let enabledExtensions = global.settings.get_strv(ExtensionSystem.ENABLED_EXTENSIONS_KEY);
if (enabledExtensions.indexOf(uuid) == -1) {
enabledExtensions.push(uuid);
global.settings.set_strv(ExtensionSystem.ENABLED_EXTENSIONS_KEY, enabledExtensions);
}
let extension = ExtensionUtils.createExtensionObject(uuid, dir, ExtensionUtils.ExtensionType.PER_USER);
try {
ExtensionSystem.loadExtension(extension);
} catch(e) {
uninstallExtension(uuid);
errback('LoadExtensionError', e);
return;
}
invocation.return_value(GLib.Variant.new('(s)', 'successful'));
}
_httpSession.queue_message(message, Lang.bind(this, function(session, message) {
gotExtensionZipFile(session, message, uuid, dir, callback, errback);
}));
this.close();
}
});
function init() {
_httpSession = new Soup.SessionAsync({ ssl_use_system_ca_file: true });
// See: https://bugzilla.gnome.org/show_bug.cgi?id=655189 for context.
// _httpSession.add_feature(new Soup.ProxyResolverDefault());
Soup.Session.prototype.add_feature.call(_httpSession, new Soup.ProxyResolverDefault());
}