# Copyright (C) 2007, One Laptop Per Child # Copyright (C) 2009, Tomeu Vizoso, Lucian Branescu # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA import os import logging from gettext import gettext as _ import time import tempfile import urlparse import urllib import gtk import hulahop import xpcom from xpcom.nsError import * from xpcom import components from xpcom.components import interfaces from xpcom.server.factory import Factory from sugar.datastore import datastore from sugar import profile from sugar import mime from sugar.graphics.alert import Alert, TimeoutAlert from sugar.graphics.icon import Icon from sugar.graphics import style from sugar.activity import activity # #3903 - this constant can be removed and assumed to be 1 when dbus-python # 0.82.3 is the only version used import dbus if dbus.version >= (0, 82, 3): DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1 else: DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1000 NS_BINDING_ABORTED = 0x804b0002 # From nsNetError.h NS_ERROR_SAVE_LINK_AS_TIMEOUT = 0x805d0020 # From nsURILoader.h DS_DBUS_SERVICE = 'org.laptop.sugar.DataStore' DS_DBUS_INTERFACE = 'org.laptop.sugar.DataStore' DS_DBUS_PATH = '/org/laptop/sugar/DataStore' _MIN_TIME_UPDATE = 5 # In seconds _MIN_PERCENT_UPDATE = 10 _active_downloads = [] _dest_to_window = {} def can_quit(): return len(_active_downloads) == 0 def remove_all_downloads(): for download in _active_downloads: download.cancelable.cancel(NS_ERROR_FAILURE) if download.dl_jobject is not None: download.datastore_deleted_handler.remove() datastore.delete(download.dl_jobject.object_id) download.cleanup_datastore_write() class HelperAppLauncherDialog: _com_interfaces_ = interfaces.nsIHelperAppLauncherDialog def promptForSaveToFile(self, launcher, window_context, default_file, suggested_file_extension, force_prompt=False): file_class = components.classes['@mozilla.org/file/local;1'] dest_file = file_class.createInstance(interfaces.nsILocalFile) if default_file: default_file = default_file.encode('utf-8', 'replace') base_name, extension = os.path.splitext(default_file) else: base_name = '' if suggested_file_extension: extension = '.' + suggested_file_extension else: extension = '' temp_path = os.path.join(activity.get_activity_root(), 'instance') if not os.path.exists(temp_path): os.makedirs(temp_path) fd, file_path = tempfile.mkstemp(dir=temp_path, prefix=base_name, suffix=extension) os.close(fd) os.chmod(file_path, 0644) dest_file.initWithPath(file_path) requestor = window_context.queryInterface(interfaces.nsIInterfaceRequestor) dom_window = requestor.getInterface(interfaces.nsIDOMWindow) _dest_to_window[file_path] = dom_window return dest_file def show(self, launcher, context, reason): launcher.saveToDisk(None, False) return NS_OK components.registrar.registerFactory('{64355793-988d-40a5-ba8e-fcde78cac631}', 'Sugar Download Manager', '@mozilla.org/helperapplauncherdialog;1', Factory(HelperAppLauncherDialog)) class Download: _com_interfaces_ = interfaces.nsITransfer def init(self, source, target, display_name, mime_info, start_time, temp_file, cancelable): self._source = source self._mime_type = mime_info.MIMEType self._temp_file = temp_file self._target_file = target.queryInterface(interfaces.nsIFileURL).file self._display_name = display_name self.cancelable = cancelable self.datastore_deleted_handler = None self.dl_jobject = None self._object_id = None self._last_update_time = 0 self._last_update_percent = 0 self._stop_alert = None file_path = self._target_file.path.encode('utf-8', 'replace') dom_window = _dest_to_window[file_path] del _dest_to_window[file_path] view = hulahop.get_view_for_window(dom_window) logging.debug('Download.init dom_window: %r' % dom_window) self._activity = view.get_toplevel() return NS_OK def onStatusChange(self, web_progress, request, status, message): logging.info('Download.onStatusChange(%r, %r, %r, %r)' % \ (web_progress, request, status, message)) def onStateChange(self, web_progress, request, state_flags, status): if state_flags & interfaces.nsIWebProgressListener.STATE_START: self._create_journal_object() self._object_id = self.dl_jobject.object_id alert = TimeoutAlert(9) alert.props.title = _('Download started') alert.props.msg = self._get_file_name() self._activity.add_alert(alert) alert.connect('response', self.__start_response_cb) alert.show() global _active_downloads _active_downloads.append(self) elif state_flags & interfaces.nsIWebProgressListener.STATE_STOP: if NS_FAILED(status): # download cancelled return self._stop_alert = Alert() self._stop_alert.props.title = _('Download completed') self._stop_alert.props.msg = self._get_file_name() open_icon = Icon(icon_name='zoom-activity') self._stop_alert.add_button(gtk.RESPONSE_APPLY, _('Show in Journal'), open_icon) open_icon.show() ok_icon = Icon(icon_name='dialog-ok') self._stop_alert.add_button(gtk.RESPONSE_OK, _('Ok'), ok_icon) ok_icon.show() self._activity.add_alert(self._stop_alert) self._stop_alert.connect('response', self.__stop_response_cb) self._stop_alert.show() self.dl_jobject.metadata['title'] = self._get_file_name() self.dl_jobject.metadata['description'] = _('From: %s') \ % self._source.spec self.dl_jobject.metadata['progress'] = '100' self.dl_jobject.file_path = self._target_file.path if self._mime_type in ['application/octet-stream', 'application/x-zip']: sniffed_mime_type = mime.get_for_file(self._target_file.path) self.dl_jobject.metadata['mime_type'] = sniffed_mime_type if self._check_image_mime_type(): self.dl_jobject.metadata['preview'] = self._get_preview_image() datastore.write(self.dl_jobject, transfer_ownership=True, reply_handler=self._internal_save_cb, error_handler=self._internal_save_error_cb, timeout=360 * DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND) def _check_image_mime_type(self): for pixbuf_format in gtk.gdk.pixbuf_get_formats(): if self._mime_type in pixbuf_format['mime_types']: return True return False def _get_preview_image(self): preview_width, preview_height = style.zoom(300), style.zoom(225) pixbuf = gtk.gdk.pixbuf_new_from_file(self._target_file.path) width, height = pixbuf.get_width(), pixbuf.get_height() scale = 1 if (width > preview_width) or (height > preview_height): scale_x = preview_width / float(width) scale_y = preview_height / float(height) scale = min(scale_x, scale_y) pixbuf2 = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, \ pixbuf.get_has_alpha(), \ pixbuf.get_bits_per_sample(), \ preview_width, preview_height) pixbuf2.fill(style.COLOR_WHITE.get_int()) margin_x = int((preview_width - (width * scale)) / 2) margin_y = int((preview_height - (height * scale)) / 2) pixbuf.scale(pixbuf2, margin_x, margin_y, \ preview_width - (margin_x * 2), \ preview_height - (margin_y * 2), \ margin_x, margin_y, scale, scale, \ gtk.gdk.INTERP_BILINEAR) preview_data = [] def save_func(buf, data): data.append(buf) pixbuf2.save_to_callback(save_func, 'png', user_data=preview_data) preview_data = ''.join(preview_data) return dbus.ByteArray(preview_data) def __start_response_cb(self, alert, response_id): global _active_downloads if response_id is gtk.RESPONSE_CANCEL: logging.debug('Download Canceled') self.cancelable.cancel(NS_ERROR_FAILURE) try: self.datastore_deleted_handler.remove() datastore.delete(self._object_id) except Exception, e: logging.warning('Object has been deleted already %s' % e) if self.dl_jobject is not None: self.cleanup_datastore_write() if self._stop_alert is not None: self._activity.remove_alert(self._stop_alert) self._activity.remove_alert(alert) def __stop_response_cb(self, alert, response_id): global _active_downloads if response_id is gtk.RESPONSE_APPLY: logging.debug('Start application with downloaded object') activity.show_object_in_journal(self._object_id) self._activity.remove_alert(alert) def cleanup_datastore_write(self): global _active_downloads _active_downloads.remove(self) if os.path.isfile(self.dl_jobject.file_path): os.remove(self.dl_jobject.file_path) self.dl_jobject.destroy() self.dl_jobject = None def _internal_save_cb(self): self.cleanup_datastore_write() def _internal_save_error_cb(self, err): logging.debug("Error saving activity object to datastore: %s" % err) self.cleanup_datastore_write() def onProgressChange64(self, web_progress, request, cur_self_progress, max_self_progress, cur_total_progress, max_total_progress): percent = (cur_self_progress * 100) / max_self_progress if (time.time() - self._last_update_time) < _MIN_TIME_UPDATE and \ (percent - self._last_update_percent) < _MIN_PERCENT_UPDATE: return self._last_update_time = time.time() self._last_update_percent = percent if percent < 100: self.dl_jobject.metadata['progress'] = str(percent) datastore.write(self.dl_jobject) def _get_file_name(self): if self._display_name: return self._display_name elif self._source.scheme == 'data': return 'Data URI' else: uri = self._source if uri == None: return '' cls = components.classes['@mozilla.org/intl/texttosuburi;1'] texttosuburi = cls.getService(interfaces.nsITextToSubURI) path = texttosuburi.unEscapeURIForUI(uri.originCharset, uri.spec) location, file_name = os.path.split(path) return file_name def _create_journal_object(self): self.dl_jobject = datastore.create() self.dl_jobject.metadata['title'] = _('Downloading %s from \n%s.') % \ (self._get_file_name(), self._source.spec) self.dl_jobject.metadata['progress'] = '0' self.dl_jobject.metadata['keep'] = '0' self.dl_jobject.metadata['buddies'] = '' self.dl_jobject.metadata['preview'] = '' self.dl_jobject.metadata['icon-color'] = \ profile.get_color().to_string() self.dl_jobject.metadata['mime_type'] = self._mime_type self.dl_jobject.file_path = '' datastore.write(self.dl_jobject) bus = dbus.SessionBus() obj = bus.get_object(DS_DBUS_SERVICE, DS_DBUS_PATH) datastore_dbus = dbus.Interface(obj, DS_DBUS_INTERFACE) self.datastore_deleted_handler = datastore_dbus.connect_to_signal( 'Deleted', self.__datastore_deleted_cb, arg0=self.dl_jobject.object_id) def __datastore_deleted_cb(self, uid): logging.debug('Downloaded entry has been deleted from the datastore: %r' % uid) global _active_downloads if self in _active_downloads: # TODO: Use NS_BINDING_ABORTED instead of NS_ERROR_FAILURE. self.cancelable.cancel(NS_ERROR_FAILURE) #NS_BINDING_ABORTED) _active_downloads.remove(self) components.registrar.registerFactory('{23c51569-e9a1-4a92-adeb-3723db82ef7c}', 'Sugar Download', '@mozilla.org/transfer;1', Factory(Download)) def save_link(url, text, owner_document): # Inspired on Firefox' browser/base/content/nsContextMenu.js:saveLink() cls = components.classes["@mozilla.org/network/io-service;1"] io_service = cls.getService(interfaces.nsIIOService) uri = io_service.newURI(url, None, None) channel = io_service.newChannelFromURI(uri) auth_prompt_callback = xpcom.server.WrapObject( _AuthPromptCallback(owner_document.defaultView), interfaces.nsIInterfaceRequestor) channel.notificationCallbacks = auth_prompt_callback channel.loadFlags = channel.loadFlags | \ interfaces.nsIRequest.LOAD_BYPASS_CACHE | \ interfaces.nsIChannel.LOAD_CALL_CONTENT_SNIFFERS # HACK: when we QI for nsIHttpChannel on objects that implement # just nsIChannel, pyxpcom gets confused trac #1029 if uri.scheme == 'http': if _implements_interface(channel, interfaces.nsIHttpChannel): channel.referrer = io_service.newURI(owner_document.documentURI, None, None) # kick off the channel with our proxy object as the listener listener = xpcom.server.WrapObject( _SaveLinkProgressListener(owner_document), interfaces.nsIStreamListener) channel.asyncOpen(listener, None) def _implements_interface(obj, interface): try: obj.QueryInterface(interface) return True except xpcom.Exception, e: if e.errno == NS_NOINTERFACE: return False else: raise class _AuthPromptCallback(object): _com_interfaces_ = interfaces.nsIInterfaceRequestor def __init__(self, dom_window): self._dom_window = dom_window def getInterface(self, uuid): if uuid in [interfaces.nsIAuthPrompt, interfaces.nsIAuthPrompt2]: cls = components.classes["@mozilla.org/embedcomp/window-watcher;1"] window_watcher = cls.getService(interfaces.nsIPromptFactory) return window_watcher.getPrompt(self._dom_window, uuid) return None class _SaveLinkProgressListener(object): _com_interfaces_ = interfaces.nsIStreamListener """ an object to proxy the data through to nsIExternalHelperAppService.doContent, which will wait for the appropriate MIME-type headers and then prompt the user with a file picker """ def __init__(self, owner_document): self._owner_document = owner_document self._external_listener = None def onStartRequest(self, request, context): if request.status != NS_OK: logging.error("Error downloading link") return cls = components.classes[ "@mozilla.org/uriloader/external-helper-app-service;1"] external_helper = cls.getService(interfaces.nsIExternalHelperAppService) channel = request.QueryInterface(interfaces.nsIChannel) self._external_listener = \ external_helper.doContent(channel.contentType, request, self._owner_document.defaultView, True) self._external_listener.onStartRequest(request, context) def onStopRequest(self, request, context, statusCode): self._external_listener.onStopRequest(request, context, statusCode) def onDataAvailable(self, request, context, inputStream, offset, count): self._external_listener.onDataAvailable(request, context, inputStream, offset, count);