/usr/share/unity-scopes/picasa/unity_picasa_daemon.py is in unity-lens-photos 1.0+14.04.20140318-0ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# -*- coding: utf-8 -*-
# Copyright (c) 2012 David Calle <davidc@framli.eu>
# 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 3 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, see <http://www.gnu.org/licenses/>.
import sys
import os
import gettext
import locale
import urllib.parse
import urllib.request
import time
import datetime
from gi.repository import Accounts
from gi.repository import Signon
from gi.repository import GLib
from gi.repository import GObject
from gi.repository import Gio
from gi.repository import Dee
from gi.repository import Unity
from gi.repository import UnityExtras
from gi.repository import GData
from xml.etree import ElementTree as ET
APP_NAME = "unity-lens-photos"
LOCAL_PATH = "/usr/share/locale/"
gettext.bindtextdomain(APP_NAME, LOCAL_PATH)
gettext.textdomain(APP_NAME)
_ = gettext.gettext
BUS_NAME = "com.canonical.Unity.Scope.Photos.Picasa"
CAT_MINE = _("My Photos")
CAT_FRIENDS = _("Friends Photos")
CAT_ONLINE = _("Online Photos")
CAT_GLOBAL = _("Photos")
CAT_RECENT = _("Recent")
FILTER_DATE = _("Date")
FILTER_OPTION_7DAYS = _("Last 7 days")
FILTER_OPTION_30DAYS = _("Last 30 days")
FILTER_OPTION_6MONTHS = _("Last 6 months")
FILTER_OPTION_OLDER = _("Older")
THEME = "/usr/share/icons/unity-icon-theme/places/svg/"
NO_RESULTS_HINT = _("Sorry, there are no photos that match your search.")
class Scope(Unity.DeprecatedScope):
last_result = None
def do_preview_result(self, result, callback):
"""Temporarily save the ScopeResult so it is available for
preview-uri signal handlers."""
# Wrap the AsyncReadyCallback to handle dummy user_data argument.
def wrapped_callback(object, async_result, user_data):
return callback(object, async_result)
self.last_result = result
try:
return Unity.DeprecatedScope.do_preview_result(
self, result, wrapped_callback, None)
finally:
self.last_result = None
class Daemon:
def __init__(self):
"""Set some initial values for the scope and connect to Unity"""
self._scope = Scope (dbus_path="/com/canonical/unity/scope/photos/picasa", id="picasa")
self._sources_options = []
# Storage for results waiting to be displayed
self.results_waiting = {1:[]}
self._enabled = False
self._cancellable = [Gio.Cancellable (), Gio.Cancellable ()]
self._get_accounts_for_service ('google')
self._scope.connect("search-changed", self._on_search_changed)
self._scope.connect("notify::active", self.on_lens_active_or_preference_changed)
self._scope.connect('preview-uri', self.on_preview_uri)
self.preferences = Unity.PreferencesManager.get_default()
self.preferences.connect("notify::remote-content-search", self.on_lens_active_or_preference_changed)
filters = Unity.FilterSet.new()
f2 = Unity.RadioOptionFilter.new ("date", FILTER_DATE, Gio.ThemedIcon.new("input-keyboard-symbolic"), False)
f2.add_option ("7", FILTER_OPTION_7DAYS, None)
f2.add_option ("30", FILTER_OPTION_30DAYS, None)
f2.add_option ("180", FILTER_OPTION_6MONTHS, None)
f2.add_option ("100000",FILTER_OPTION_OLDER, None)
filters.add (f2)
cats = Unity.CategorySet.new()
cats.add (Unity.Category.new ('recent',
CAT_RECENT,
Gio.ThemedIcon.new(THEME + "group-recent.svg"),
Unity.CategoryRenderer.VERTICAL_TILE))
cats.add (Unity.Category.new ('mine',
CAT_MINE,
Gio.ThemedIcon.new(THEME + "group-photos.svg"),
Unity.CategoryRenderer.VERTICAL_TILE))
cats.add (Unity.Category.new ('friends',
CAT_FRIENDS,
Gio.ThemedIcon.new(THEME + "group-friends.svg"),
Unity.CategoryRenderer.VERTICAL_TILE))
cats.add (Unity.Category.new ('online',
CAT_ONLINE,
Gio.ThemedIcon.new(THEME + "group-internet.svg"),
Unity.CategoryRenderer.VERTICAL_TILE))
cats.add (Unity.Category.new ('global',
CAT_GLOBAL,
Gio.ThemedIcon.new(THEME + "group-photos.svg"),
Unity.CategoryRenderer.VERTICAL_TILE))
self._scope.props.categories = cats
self._scope.props.filters = filters
self._scope.export ()
def callback(object, result, user_data):
object.preview_result_finish(result)
########
# Account management
########
def _get_accounts_for_service (self, service):
"""Get online accounts matching the scope service"""
self._accounts = []
try:
self._account_manager = Accounts.Manager.new_for_service_type("sharing")
except TypeError as e:
print ("Error (google): Unable to initialise accounts manager: %s" % e)
return
self._account_manager.connect("enabled-event", self._on_enabled_event)
self._account_manager.connect("account-deleted", self._on_deleted_event)
for account_service in self._account_manager.get_enabled_account_services():
if account_service.get_account().get_provider_name() == service:
self._add_account_service(account_service)
return
else:
self._remove_account_service(account_service)
def _add_account_service(self, account_service):
"""Add account to scope and add Sources filter option"""
for account in self._accounts:
if account:
if account.get_account_service() == account_service:
return
self._accounts.append(self._account_to_login(account_service))
print ('Added Picasa account %s' % (account_service,))
source_name = account_service.get_account().get_provider_name ().title()
if not source_name in self._sources_options:
self._sources_options.append(source_name)
self._scope.props.sources.add_option(source_name, "Picasa", None)
def _remove_account_service(self, account_service):
"""Remove account from Sources filter"""
self._enabled = False
print ('Removed Picasa account %s' % (account_service))
source_name = account_service.get_account().get_provider_name ().title()
if source_name in self._sources_options:
self._sources_options.remove(source_name)
self._scope.props.sources.remove_option(source_name)
self.on_lens_active_or_preference_changed ()
def get_account_service(self):
return self._account_service
def _on_account_enabled (self, account, enabled):
self._enabled = enabled
def _account_to_login(self,account_service):
"""Initialize default values for the account"""
self._account_service = account_service
self._account_service.connect("enabled", self._on_account_enabled)
self._enabled = self._account_service.get_enabled()
authorizer = SignOnAuthorizer(self._account_service)
authorizer.refresh_authorization(None)
self._client = GData.PicasaWebService(authorizer=authorizer)
self._queued_search = None
def _on_enabled_event(self, account_manager, account_id):
"""Listen to the account enabled signal
and remove/add the service accordingly"""
account = self._account_manager.get_account(account_id)
if account.get_provider_name() != "google": return
for service in account.list_services():
account_service = Accounts.AccountService.new(account, service)
if account_service.get_enabled():
self._add_account_service(account_service)
else:
self._remove_account_service(account_service)
def _on_deleted_event(self, account_manager, account_id):
"""Listen to the account deleted signal,
remove the service and silence the scope"""
account = self._account_manager.get_account(account_id)
source_name = account.get_provider_name ().title()
if source_name in self._sources_options:
self.enabled = False
self._sources_options.remove(source_name)
self._scope.props.sources.remove_option(source_name)
self.on_lens_active_or_preference_changed ()
print ('Removed Picasa account')
########
# Lens functions
########
def on_lens_active_or_preference_changed(self, *_):
""" Update results when the lens is opened """
self._scope.queue_search_changed(Unity.SearchType.DEFAULT)
def check_date_filter(self, s):
"""Get active option for a filter name"""
try:
date = s.get_filter("date").get_active_option().props.id
date = int(date)*86400
now = int(time.time())
date = now - date
except (AttributeError):
date = 0
return date
def _on_search_changed (self, scope, search, search_type, cancellable):
"""Trigger a search for each category when the lens requests it"""
self.recent_expected = False
for c in self._cancellable:
c.cancel ()
model = search.props.results_model
search.set_reply_hint ("no-results-hint", GLib.Variant.new_string(NO_RESULTS_HINT))
model.clear ()
# only perform the request if the user has not disabled
# online results. That will hide the category as well.
if self.preferences.props.remote_content_search != Unity.PreferencesManagerRemoteContent.ALL:
search.emit('finished')
return
search_string = search.props.search_string
if self._enabled:
self.update_results_model (search_string, model, search)
print("Picasa : new search %s" % search_string)
else:
search.emit ('finished')
def recent_cat_is_done (self, model):
""" Wait for Recent category results to be fetched before displaying others.
It allows results deduplication to prioritize results from Recent"""
for cat in self.results_waiting.keys ():
print ("Releasing Picasa results for cat %i" % cat)
self.parse_results(self.results_waiting[cat], cat, model, True)
def update_results_model (self, search, model, s):
"""Trigger Picasa queries for each cat"""
if not self._enabled:
return
if self.check_date_filter(s) != 0 or search:
cats = [1]
else:
cats = [0,1]
self.recent_expected = True
for cat in cats:
xml_feed = self.get_photos_list(search, cat, model, s);
def get_photos_list (self, search, cat, model, s):
"""Prepare Picasa async query"""
if cat == 1:
limit = 100
else:
limit = 50
if not self._client.is_authorized():
self._client.props.authorizer.refresh_authorization(None)
timestamp = self.check_date_filter(s)
if timestamp < 0:
timestamp = 180*86400
now = int(time.time())
timestamp = now - timestamp
operator = "<"
else:
operator = ">"
d=datetime.datetime.fromtimestamp(timestamp)
date = d.isoformat("T") + "Z"
fields = urllib.parse.urlencode ({"fields":"entry[xs:dateTime(published)%sxs:dateTime('%s')],link,id,updated" % (operator, date)})
url = "https://picasaweb.google.com/data/feed/api/user/default?kind=photo&max-results=%i&thumbsize=u150&%s" % (limit,fields)
q = GData.Query.new (search)
fquery = GData.Query.get_query_uri (q, url)
self._cancellable[cat] = Gio.Cancellable ()
try:
feed = self._client.query(None, fquery, q, GData.PicasaWebFile, self._cancellable[cat], None, None)
except Exception as error:
print (error)
feed = None
if feed:
self.parse_results (feed.get_xml(), cat, model, False)
s.emit('finished')
def parse_results (self, results, cat, model, recent_done):
"""Parse and update results for category 0, then the others"""
if self.recent_expected and not recent_done and cat != 0:
self.results_waiting[cat] = results
else:
counter = 0
if results:
feed = ET.XML(results)
for elem in feed:
if elem.tag == '{http://www.w3.org/2005/Atom}entry':
title, photo_feed, photo_link = '', '', ''
date, thumb, summary = '', '', None
for sub in elem:
if sub.tag == "{http://www.w3.org/2005/Atom}summary":
summary = sub.text
if sub.tag == "{http://www.w3.org/2005/Atom}title":
title = sub.text
if sub.tag == "{http://www.w3.org/2005/Atom}link":
if sub.get("rel") == "http://schemas.google.com/g/2005#feed":
photo_feed = sub.get("href")
if sub.get("rel") == "http://www.iana.org/assignments/relation/alternate":
photo_link = sub.get("href")
if sub.tag == "{http://schemas.google.com/photos/2007}timestamp":
date = sub.text
if sub.tag == "{http://schemas.google.com/photos/2007}albumtitle":
album = sub.text
if sub.tag == "{http://www.w3.org/2005/Atom}content":
thumb = sub.get('src')
if summary:
title = summary
if thumb and photo_link and title and album and photo_feed and date:
counter += 1
model.append(uri=photo_link,
icon_hint=thumb,
category=cat,
mimetype="text/html",
title=title,
comment=str(date)[:11]+"_ulp-date_"+album+"_ulp-album_"+photo_feed,
dnd_uri=photo_link,
result_type=Unity.ResultType.PERSONAL);
print ('Picasa : Added %i results to category %i' % (counter, cat))
if cat == 0:
self.recent_cat_is_done (model)
########
# Previews
########
def on_preview_uri(self, scope, uri):
"""Preview request handler"""
preview = None
if scope.last_result.uri == uri:
photo_from_feed = scope.last_result.comment.split('_ulp-date_')[1]
album = photo_from_feed.split('_ulp-album_')[0]
photo_id = photo_from_feed.split('_ulp-album_')[1]
timestamp = scope.last_result.comment.split('_ulp-date_')[0]
date = datetime.datetime.fromtimestamp(float(timestamp[:-1])).strftime('%d %b %Y')
try:
meta = self.getMetadataForPhoto(photo_id)
except:
meta = [None, None, None, None, None, None]
title = scope.last_result.title
description = ''
preview = Unity.GenericPreview.new(title.strip (), description.strip (), None)
if meta[0]:
preview.props.image_source_uri = meta[0]
else:
preview.props.image_source_uri = scope.last_result.icon_hint
if meta[1]:
preview.props.subtitle = _("By %s, %s") % (meta[1], date)
if meta[2]:
preview.add_info(Unity.InfoHint.new("camera", _("Camera"), None, meta[2]))
if meta[3]:
preview.add_info(Unity.InfoHint.new("dimensions", _("Dimensions"), None, meta[3]))
if meta[4]:
preview.add_info(Unity.InfoHint.new("size", _("Size"), None, meta[4]))
if meta[5]:
preview.add_info(Unity.InfoHint.new("license", _("License"), None, meta[5]))
if album:
preview.add_info(Unity.InfoHint.new("album", _("Album"), None, album))
gfile_icon = Gio.file_new_for_path("/usr/share/icons/unity-icon-theme/places/svg/service-picasa.svg")
gicon = Gio.FileIcon.new (gfile_icon)
view_action = Unity.PreviewAction.new("view", _("View"), gicon)
view_action.connect('activated', self.view_action)
preview.add_action(view_action)
if preview == None:
print ("Couldn't find model row for requested preview uri: '%s'", uri)
return preview
def view_action (self, scope, uri):
"""On item clicked, close the Dash and display the photo"""
return
def getMetadataForPhoto (self, pid):
"""Fetch photo metadata from service"""
image, author, camera = None, None, None
size, dimensions, license = None, None, None
raw_results = urllib.request.urlopen(pid).read ()
xml_feed = (raw_results.decode("utf8"))
feed = ET.XML(xml_feed)
for elem in feed:
if elem.tag == "{http://search.yahoo.com/mrss/}group":
for sub in elem:
if sub.tag == "{http://search.yahoo.com/mrss/}content":
image = sub.get("url")
if sub.tag == "{http://search.yahoo.com/mrss/}credit":
author = sub.text
if elem.tag == "{http://schemas.google.com/photos/exif/2007}tags":
for sub in elem:
if sub.tag == "{http://schemas.google.com/photos/exif/2007}model":
camera = sub.text
if elem.tag == "{http://schemas.google.com/photos/2007}license":
license = elem.get("name")
if elem.tag == "{http://schemas.google.com/photos/2007}size":
size = elem.text
if elem.tag == "{http://schemas.google.com/photos/2007}width":
width = elem.text
if elem.tag == "{http://schemas.google.com/photos/2007}height":
height = elem.text
dimensions = "%s x %s pixels" % (width, height)
size = self.humanize_bytes(int(size))
return [image, author, camera, dimensions, size, license]
def humanize_bytes(self, bytes, precision=1):
"""Get a humanized string representation of a number of bytes."""
abbrevs = ((10**15, 'PB'),(10**12, 'TB'),(10**9, 'GB'),(10**6, 'MB'),(10**3, 'kB'),(1, 'b'))
if bytes == 1:
return '1 b'
for factor, suffix in abbrevs:
if bytes >= factor:
break
return '%.*f%s' % (precision, bytes / factor, suffix)
########
# Service authorization handling
########
class SignOnAuthorizer(GObject.Object, GData.Authorizer):
__g_type_name__ = "SignOnAuthorizer"
def __init__(self, account_service):
GObject.Object.__init__(self)
self._account_service = account_service
self._token = None
def do_process_request(self, domain, message):
message.props.request_headers.replace('Authorization', 'OAuth %s' % (self._token, ))
def do_is_authorized_for_domain(self, domain):
return True if self._token else False
def do_refresh_authorization(self, cancellable):
old_token = self._token
# Get the global account settings
auth_data = self._account_service.get_auth_data()
identity = auth_data.get_credentials_id()
session_data = auth_data.get_parameters()
self._auth_session = Signon.AuthSession.new(identity, auth_data.get_method())
self._main_loop = GLib.MainLoop()
self._auth_session.process(session_data,
auth_data.get_mechanism(),
self.login_cb, None)
if self._main_loop:
self._main_loop.run()
if self._token == old_token:
return False
else:
return True
def login_cb(self, session, reply, error, user_data):
print("Picasa: login finished")
self._main_loop.quit()
self._main_loop = None
if error:
print("Picasa: Got authentication error:", error.message)
return
if "AuthToken" in reply:
self._token = reply["AuthToken"]
elif "AccessToken" in reply:
self._token = reply["AccessToken"]
else:
print("Didn't find token in session:", reply)
if __name__ == '__main__':
daemon = UnityExtras.dbus_own_name(BUS_NAME, Daemon, None)
if daemon:
GLib.unix_signal_add(0, 2, lambda x: daemon.quit(), None)
daemon.run([])
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