apprise/apprise/plugins/NotifyDBus.py

323 lines
9.8 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
# All rights reserved.
#
# This code is licensed under the MIT License.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files(the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions :
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
from __future__ import absolute_import
from __future__ import print_function
import re
from .NotifyBase import NotifyBase
from ..common import NotifyImageSize
from ..utils import GET_SCHEMA_RE
# Default our global support flag
NOTIFY_DBUS_SUPPORT_ENABLED = False
# Image support is dependant on the GdkPixbuf library being available
NOTIFY_DBUS_IMAGE_SUPPORT = False
# The following are required to hook into the notifications:
NOTIFY_DBUS_INTERFACE = 'org.freedesktop.Notifications'
NOTIFY_DBUS_SETTING_LOCATION = '/org/freedesktop/Notifications'
# Initialize our mainloops
LOOP_GLIB = None
LOOP_QT = None
try:
# dbus essentials
from dbus import SessionBus
from dbus import Interface
from dbus import Byte
from dbus import ByteArray
#
# now we try to determine which mainloop(s) we can access
#
# glib
try:
from dbus.mainloop.glib import DBusGMainLoop
LOOP_GLIB = DBusGMainLoop()
except ImportError:
# No problem
pass
# qt
try:
from dbus.mainloop.qt import DBusQtMainLoop
LOOP_QT = DBusQtMainLoop(set_as_default=True)
except ImportError:
# No problem
pass
# We're good as long as at least one
NOTIFY_DBUS_SUPPORT_ENABLED = (
LOOP_GLIB is not None or LOOP_QT is not None)
try:
# The following is required for Image/Icon loading only
import gi
gi.require_version('GdkPixbuf', '2.0')
from gi.repository import GdkPixbuf
NOTIFY_DBUS_IMAGE_SUPPORT = True
except ImportError:
# No problem; this will get caught in outer try/catch
raise
except ImportError:
# No problem; we just simply can't support this plugin; we could
# be in microsoft windows, or we just don't have the python-gobject
# library available to us (or maybe one we don't support)?
pass
# Define our supported protocols and the loop to assign them.
# The key to value pairs are the actual supported schema's matched
# up with the Main Loop they should reference when accessed.
MAINLOOP_MAP = {
'qt': LOOP_QT,
'kde': LOOP_QT,
'glib': LOOP_GLIB,
'dbus': LOOP_QT if LOOP_QT else LOOP_GLIB,
}
# Urgencies
class DBusUrgency(object):
LOW = 0
NORMAL = 1
HIGH = 2
# Define our urgency levels
DBUS_URGENCIES = (
DBusUrgency.LOW,
DBusUrgency.NORMAL,
DBusUrgency.HIGH,
)
class NotifyDBus(NotifyBase):
"""
A wrapper for local DBus/Qt Notifications
"""
# The default descriptive name associated with the Notification
service_name = 'DBus Notification'
# The default protocols
# Python 3 keys() does not return a list object, it's it's own dict_keys()
# object if we were to reference, we wouldn't be backwards compatible with
# Python v2. So converting the result set back into a list makes us
# compatible
protocol = list(MAINLOOP_MAP.keys())
# A URL that takes you to the setup/help of the specific protocol
setup_url = 'https://github.com/caronc/apprise/wiki/Notify_dbus'
# Allows the user to specify the NotifyImageSize object
image_size = NotifyImageSize.XY_128
# The number of seconds to keep the message present for
message_timeout_ms = 13000
# This entry is a bit hacky, but it allows us to unit-test this library
# in an environment that simply doesn't have the gnome packages
# available to us. It also allows us to handle situations where the
# packages actually are present but we need to test that they aren't.
# If anyone is seeing this had knows a better way of testing this
# outside of what is defined in test/test_glib_plugin.py, please
# let me know! :)
_enabled = NOTIFY_DBUS_SUPPORT_ENABLED
def __init__(self, urgency=None, x_axis=None, y_axis=None, **kwargs):
"""
Initialize DBus Object
"""
super(NotifyDBus, self).__init__(**kwargs)
# Track our notifications
self.registry = {}
# Store our schema; default to dbus
self.schema = kwargs.get('schema', 'dbus')
if self.schema not in MAINLOOP_MAP:
# Unsupported Schema
self.logger.warning(
'The schema specified ({}) is not supported.'
.format(self.schema))
raise TypeError(
'The schema specified ({}) is not supported.'
.format(self.schema))
# The urgency of the message
if urgency not in DBUS_URGENCIES:
self.urgency = DBusUrgency.NORMAL
else:
self.urgency = urgency
# Our x/y axis settings
self.x_axis = x_axis
self.y_axis = y_axis
def notify(self, title, body, notify_type, **kwargs):
"""
Perform DBus Notification
"""
if not self._enabled or MAINLOOP_MAP[self.schema] is None:
self.logger.warning(
"{} notifications could not be loaded.".format(self.schema))
return False
# Acquire our session
session = SessionBus(mainloop=MAINLOOP_MAP[self.schema])
# acquire our dbus object
dbus_obj = session.get_object(
NOTIFY_DBUS_INTERFACE,
NOTIFY_DBUS_SETTING_LOCATION,
)
# Acquire our dbus interface
dbus_iface = Interface(
dbus_obj,
dbus_interface=NOTIFY_DBUS_INTERFACE,
)
# image path
icon_path = self.image_path(notify_type, extension='.ico')
# Our meta payload
meta_payload = {
"urgency": Byte(self.urgency)
}
if not (self.x_axis is None and self.y_axis is None):
# Set x/y access if these were set
meta_payload['x'] = self.x_axis
meta_payload['y'] = self.y_axis
if NOTIFY_DBUS_IMAGE_SUPPORT is True:
try:
# Use Pixbuf to create the proper image type
image = GdkPixbuf.Pixbuf.new_from_file(icon_path)
# Associate our image to our notification
meta_payload['icon_data'] = (
image.get_width(),
image.get_height(),
image.get_rowstride(),
image.get_has_alpha(),
image.get_bits_per_sample(),
image.get_n_channels(),
ByteArray(image.get_pixels())
)
except Exception as e:
self.logger.warning(
"Could not load Gnome notification icon ({}): {}"
.format(icon_path, e))
# Limit results to just the first 10 line otherwise
# there is just to much content to display
body = re.split('[\r\n]+', body)
if title:
# Place title on first line if it exists
body.insert(0, title)
body = '\r\n'.join(body[0:10])
try:
dbus_iface.Notify(
# Application Identifier
self.app_id,
# Message ID (0 = New Message)
0,
# Icon (str) - not used
'',
# Title
str(title),
# Body
str(body),
# Actions
list(),
# Meta
meta_payload,
# Message Timeout
self.message_timeout_ms,
)
self.logger.info('Sent DBus notification.')
except Exception as e:
self.logger.warning('Failed to send DBus notification.')
self.logger.exception('DBus Exception')
return False
return True
@staticmethod
def parse_url(url):
"""
There are no parameters nessisary for this protocol; simply having
gnome:// is all you need. This function just makes sure that
is in place.
"""
schema = GET_SCHEMA_RE.match(url)
if schema is None:
# Content is simply not parseable
return None
# return a very basic set of requirements
return {
'schema': schema.group('schema').lower(),
'user': None,
'password': None,
'port': None,
'host': 'localhost',
'fullpath': None,
'path': None,
'url': url,
'qsd': {},
# screen lat/lon (in pixels) where x=0 and y=0 if you want to put
# the notification in the top left hand side. Accept defaults if
# set to None
'x_axis': None,
'y_axis': None,
# Set the urgency to None so that we fall back to the default
# value.
'urgency': None,
}