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449 lines
14 KiB
449 lines
14 KiB
# -*- coding: utf-8 -*-
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# BSD 2-Clause License
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#
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# Apprise - Push Notification Library.
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# Copyright (c) 2024, Chris Caron <lead2gold@gmail.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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import sys
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from .NotifyBase import NotifyBase
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from ..common import NotifyImageSize
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from ..common import NotifyType
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from ..utils import parse_bool
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from ..AppriseLocale import gettext_lazy as _
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# Default our global support flag
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NOTIFY_DBUS_SUPPORT_ENABLED = False
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# Image support is dependant on the GdkPixbuf library being available
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NOTIFY_DBUS_IMAGE_SUPPORT = False
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# Initialize our mainloops
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LOOP_GLIB = None
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LOOP_QT = None
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try:
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# dbus essentials
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from dbus import SessionBus
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from dbus import Interface
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from dbus import Byte
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from dbus import ByteArray
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from dbus import DBusException
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#
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# now we try to determine which mainloop(s) we can access
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#
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# glib
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try:
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from dbus.mainloop.glib import DBusGMainLoop
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LOOP_GLIB = DBusGMainLoop()
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except ImportError: # pragma: no cover
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# No problem
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pass
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# qt
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try:
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from dbus.mainloop.qt import DBusQtMainLoop
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LOOP_QT = DBusQtMainLoop(set_as_default=True)
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except ImportError:
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# No problem
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pass
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# We're good as long as at least one
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NOTIFY_DBUS_SUPPORT_ENABLED = (
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LOOP_GLIB is not None or LOOP_QT is not None)
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# ImportError: When using gi.repository you must not import static modules
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# like "gobject". Please change all occurrences of "import gobject" to
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# "from gi.repository import GObject".
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# See: https://bugzilla.gnome.org/show_bug.cgi?id=709183
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if "gobject" in sys.modules: # pragma: no cover
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del sys.modules["gobject"]
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try:
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# The following is required for Image/Icon loading only
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import gi
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gi.require_version('GdkPixbuf', '2.0')
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from gi.repository import GdkPixbuf
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NOTIFY_DBUS_IMAGE_SUPPORT = True
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except (ImportError, ValueError, AttributeError):
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# No problem; this will get caught in outer try/catch
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# A ValueError will get thrown upon calling gi.require_version() if
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# GDK/GTK isn't installed on the system but gi is.
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pass
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except ImportError:
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# No problem; we just simply can't support this plugin; we could
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# be in microsoft windows, or we just don't have the python-gobject
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# library available to us (or maybe one we don't support)?
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pass
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# Define our supported protocols and the loop to assign them.
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# The key to value pairs are the actual supported schema's matched
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# up with the Main Loop they should reference when accessed.
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MAINLOOP_MAP = {
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'qt': LOOP_QT,
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'kde': LOOP_QT,
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'glib': LOOP_GLIB,
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'dbus': LOOP_QT if LOOP_QT else LOOP_GLIB,
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}
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# Urgencies
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class DBusUrgency:
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LOW = 0
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NORMAL = 1
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HIGH = 2
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DBUS_URGENCIES = {
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# Note: This also acts as a reverse lookup mapping
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DBusUrgency.LOW: 'low',
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DBusUrgency.NORMAL: 'normal',
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DBusUrgency.HIGH: 'high',
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}
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DBUS_URGENCY_MAP = {
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# Maps against string 'low'
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'l': DBusUrgency.LOW,
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# Maps against string 'moderate'
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'm': DBusUrgency.LOW,
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# Maps against string 'normal'
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'n': DBusUrgency.NORMAL,
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# Maps against string 'high'
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'h': DBusUrgency.HIGH,
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# Maps against string 'emergency'
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'e': DBusUrgency.HIGH,
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# Entries to additionally support (so more like DBus's API)
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'0': DBusUrgency.LOW,
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'1': DBusUrgency.NORMAL,
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'2': DBusUrgency.HIGH,
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}
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class NotifyDBus(NotifyBase):
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"""
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A wrapper for local DBus/Qt Notifications
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"""
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# Set our global enabled flag
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enabled = NOTIFY_DBUS_SUPPORT_ENABLED
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requirements = {
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# Define our required packaging in order to work
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'details': _('libdbus-1.so.x must be installed.')
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}
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# The default descriptive name associated with the Notification
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service_name = _('DBus Notification')
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# The services URL
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service_url = 'http://www.freedesktop.org/Software/dbus/'
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# The default protocols
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# Python 3 keys() does not return a list object, it is its own dict_keys()
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# object if we were to reference, we wouldn't be backwards compatible with
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# Python v2. So converting the result set back into a list makes us
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# compatible
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# TODO: Review after dropping support for Python 2.
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protocol = list(MAINLOOP_MAP.keys())
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# A URL that takes you to the setup/help of the specific protocol
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setup_url = 'https://github.com/caronc/apprise/wiki/Notify_dbus'
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# No throttling required for DBus queries
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request_rate_per_sec = 0
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# Allows the user to specify the NotifyImageSize object
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image_size = NotifyImageSize.XY_128
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# The number of milliseconds to keep the message present for
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message_timeout_ms = 13000
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# Limit results to just the first 10 line otherwise there is just to much
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# content to display
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body_max_line_count = 10
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# The following are required to hook into the notifications:
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dbus_interface = 'org.freedesktop.Notifications'
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dbus_setting_location = '/org/freedesktop/Notifications'
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# Define object templates
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templates = (
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'{schema}://',
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)
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# Define our template arguments
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template_args = dict(NotifyBase.template_args, **{
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'urgency': {
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'name': _('Urgency'),
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'type': 'choice:int',
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'values': DBUS_URGENCIES,
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'default': DBusUrgency.NORMAL,
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},
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'priority': {
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# Apprise uses 'priority' everywhere; it's just a nice consistent
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# feel to be able to use it here as well. Just map the
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# value back to 'priority'
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'alias_of': 'urgency',
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},
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'x': {
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'name': _('X-Axis'),
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'type': 'int',
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'min': 0,
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'map_to': 'x_axis',
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},
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'y': {
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'name': _('Y-Axis'),
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'type': 'int',
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'min': 0,
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'map_to': 'y_axis',
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},
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'image': {
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'name': _('Include Image'),
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'type': 'bool',
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'default': True,
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'map_to': 'include_image',
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},
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})
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def __init__(self, urgency=None, x_axis=None, y_axis=None,
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include_image=True, **kwargs):
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"""
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Initialize DBus Object
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"""
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super().__init__(**kwargs)
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# Track our notifications
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self.registry = {}
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# Store our schema; default to dbus
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self.schema = kwargs.get('schema', 'dbus')
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if self.schema not in MAINLOOP_MAP:
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msg = 'The schema specified ({}) is not supported.' \
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.format(self.schema)
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self.logger.warning(msg)
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raise TypeError(msg)
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# The urgency of the message
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self.urgency = int(
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NotifyDBus.template_args['urgency']['default']
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if urgency is None else
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next((
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v for k, v in DBUS_URGENCY_MAP.items()
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if str(urgency).lower().startswith(k)),
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NotifyDBus.template_args['urgency']['default']))
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# Our x/y axis settings
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if x_axis or y_axis:
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try:
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self.x_axis = int(x_axis)
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self.y_axis = int(y_axis)
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except (TypeError, ValueError):
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# Invalid x/y values specified
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msg = 'The x,y coordinates specified ({},{}) are invalid.'\
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.format(x_axis, y_axis)
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self.logger.warning(msg)
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raise TypeError(msg)
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else:
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self.x_axis = None
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self.y_axis = None
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# Track whether we want to add an image to the notification.
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self.include_image = include_image
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def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
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"""
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Perform DBus Notification
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"""
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# Acquire our session
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try:
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session = SessionBus(mainloop=MAINLOOP_MAP[self.schema])
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except DBusException as e:
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# Handle exception
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self.logger.warning('Failed to send DBus notification.')
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self.logger.debug(f'DBus Exception: {e}')
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return False
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# If there is no title, but there is a body, swap the two to get rid
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# of the weird whitespace
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if not title:
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title = body
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body = ''
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# acquire our dbus object
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dbus_obj = session.get_object(
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self.dbus_interface,
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self.dbus_setting_location,
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)
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# Acquire our dbus interface
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dbus_iface = Interface(
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dbus_obj,
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dbus_interface=self.dbus_interface,
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)
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# image path
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icon_path = None if not self.include_image \
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else self.image_path(notify_type, extension='.ico')
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# Our meta payload
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meta_payload = {
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"urgency": Byte(self.urgency)
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}
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if not (self.x_axis is None and self.y_axis is None):
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# Set x/y access if these were set
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meta_payload['x'] = self.x_axis
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meta_payload['y'] = self.y_axis
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if NOTIFY_DBUS_IMAGE_SUPPORT and icon_path:
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try:
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# Use Pixbuf to create the proper image type
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image = GdkPixbuf.Pixbuf.new_from_file(icon_path)
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# Associate our image to our notification
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meta_payload['icon_data'] = (
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image.get_width(),
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image.get_height(),
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image.get_rowstride(),
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image.get_has_alpha(),
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image.get_bits_per_sample(),
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image.get_n_channels(),
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ByteArray(image.get_pixels())
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)
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except Exception as e:
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self.logger.warning(
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"Could not load notification icon (%s).", icon_path)
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self.logger.debug(f'DBus Exception: {e}')
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try:
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# Always call throttle() before any remote execution is made
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self.throttle()
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dbus_iface.Notify(
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# Application Identifier
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self.app_id,
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# Message ID (0 = New Message)
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0,
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# Icon (str) - not used
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'',
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# Title
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str(title),
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# Body
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str(body),
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# Actions
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list(),
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# Meta
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meta_payload,
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# Message Timeout
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self.message_timeout_ms,
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)
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self.logger.info('Sent DBus notification.')
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except Exception as e:
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self.logger.warning('Failed to send DBus notification.')
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self.logger.debug(f'DBus Exception: {e}')
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return False
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return True
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def url(self, privacy=False, *args, **kwargs):
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"""
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Returns the URL built dynamically based on specified arguments.
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"""
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# Define any URL parameters
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params = {
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'image': 'yes' if self.include_image else 'no',
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'urgency':
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DBUS_URGENCIES[self.template_args['urgency']['default']]
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if self.urgency not in DBUS_URGENCIES
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else DBUS_URGENCIES[self.urgency],
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}
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# Extend our parameters
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params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
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# x in (x,y) screen coordinates
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if self.x_axis:
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params['x'] = str(self.x_axis)
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# y in (x,y) screen coordinates
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if self.y_axis:
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params['y'] = str(self.y_axis)
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return '{schema}://_/?{params}'.format(
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schema=self.schema,
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params=NotifyDBus.urlencode(params),
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)
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@staticmethod
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def parse_url(url):
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"""
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There are no parameters nessisary for this protocol; simply having
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gnome:// is all you need. This function just makes sure that
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is in place.
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"""
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results = NotifyBase.parse_url(url, verify_host=False)
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# Include images with our message
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results['include_image'] = \
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parse_bool(results['qsd'].get('image', True))
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# DBus supports urgency, but we we also support the keyword priority
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# so that it is consistent with some of the other plugins
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if 'priority' in results['qsd'] and len(results['qsd']['priority']):
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# We intentionally store the priority in the urgency section
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results['urgency'] = \
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NotifyDBus.unquote(results['qsd']['priority'])
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if 'urgency' in results['qsd'] and len(results['qsd']['urgency']):
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results['urgency'] = \
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NotifyDBus.unquote(results['qsd']['urgency'])
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# handle x,y coordinates
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if 'x' in results['qsd'] and len(results['qsd']['x']):
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results['x_axis'] = NotifyDBus.unquote(results['qsd'].get('x'))
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if 'y' in results['qsd'] and len(results['qsd']['y']):
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results['y_axis'] = NotifyDBus.unquote(results['qsd'].get('y'))
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return results
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