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492 lines
16 KiB
492 lines
16 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 re
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import requests
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from json import dumps
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import base64
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from .NotifyBase import NotifyBase
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from ..common import NotifyType
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from ..utils import is_phone_no
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from ..utils import parse_phone_no
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from ..utils import parse_bool
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from ..URLBase import PrivacyMode
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from ..AppriseLocale import gettext_lazy as _
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GROUP_REGEX = re.compile(
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r'^\s*((\@|\%40)?(group\.)|\@|\%40)(?P<group>[a-z0-9_=-]+)', re.I)
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class NotifySignalAPI(NotifyBase):
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"""
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A wrapper for SignalAPI Notifications
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"""
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# The default descriptive name associated with the Notification
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service_name = 'Signal API'
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# The services URL
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service_url = 'https://bbernhard.github.io/signal-cli-rest-api/'
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# The default protocol
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protocol = 'signal'
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# The default protocol
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secure_protocol = 'signals'
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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_signal'
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# Support attachments
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attachment_support = True
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# The maximum targets to include when doing batch transfers
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default_batch_size = 10
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# We don't support titles for Signal notifications
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title_maxlen = 0
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# Define object templates
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templates = (
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'{schema}://{host}/{from_phone}',
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'{schema}://{host}:{port}/{from_phone}',
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'{schema}://{user}@{host}/{from_phone}',
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'{schema}://{user}@{host}:{port}/{from_phone}',
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'{schema}://{user}:{password}@{host}/{from_phone}',
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'{schema}://{user}:{password}@{host}:{port}/{from_phone}',
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'{schema}://{host}/{from_phone}/{targets}',
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'{schema}://{host}:{port}/{from_phone}/{targets}',
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'{schema}://{user}@{host}/{from_phone}/{targets}',
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'{schema}://{user}@{host}:{port}/{from_phone}/{targets}',
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'{schema}://{user}:{password}@{host}/{from_phone}/{targets}',
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'{schema}://{user}:{password}@{host}:{port}/{from_phone}/{targets}',
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)
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# Define our template tokens
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template_tokens = dict(NotifyBase.template_tokens, **{
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'host': {
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'name': _('Hostname'),
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'type': 'string',
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'required': True,
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},
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'port': {
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'name': _('Port'),
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'type': 'int',
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'min': 1,
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'max': 65535,
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},
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'user': {
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'name': _('Username'),
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'type': 'string',
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},
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'password': {
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'name': _('Password'),
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'type': 'string',
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'private': True,
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},
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'from_phone': {
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'name': _('From Phone No'),
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'type': 'string',
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'required': True,
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'regex': (r'^\+?[0-9\s)(+-]+$', 'i'),
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'map_to': 'source',
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},
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'target_phone': {
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'name': _('Target Phone No'),
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'type': 'string',
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'prefix': '+',
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'regex': (r'^[0-9\s)(+-]+$', 'i'),
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'map_to': 'targets',
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},
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'target_channel': {
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'name': _('Target Group ID'),
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'type': 'string',
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'prefix': '@',
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'regex': (r'^[a-z0-9_=-]+$', 'i'),
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'map_to': 'targets',
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},
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'targets': {
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'name': _('Targets'),
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'type': 'list:string',
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}
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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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'to': {
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'alias_of': 'targets',
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},
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'from': {
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'alias_of': 'from_phone',
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},
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'batch': {
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'name': _('Batch Mode'),
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'type': 'bool',
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'default': False,
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},
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'status': {
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'name': _('Show Status'),
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'type': 'bool',
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'default': False,
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},
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})
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def __init__(self, source=None, targets=None, batch=False, status=False,
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**kwargs):
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"""
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Initialize SignalAPI Object
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"""
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super().__init__(**kwargs)
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# Prepare Batch Mode Flag
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self.batch = batch
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# Set Status type
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self.status = status
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# Parse our targets
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self.targets = list()
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# Used for URL generation afterwards only
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self.invalid_targets = list()
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# Manage our Source Phone
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result = is_phone_no(source)
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if not result:
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msg = 'An invalid Signal API Source Phone No ' \
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'({}) was provided.'.format(source)
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self.logger.warning(msg)
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raise TypeError(msg)
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self.source = '+{}'.format(result['full'])
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if targets:
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# Validate our targerts
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for target in parse_phone_no(targets):
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# Validate targets and drop bad ones:
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result = is_phone_no(target)
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if result:
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# store valid phone number
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self.targets.append('+{}'.format(result['full']))
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continue
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result = GROUP_REGEX.match(target)
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if result:
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# Just store group information
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self.targets.append(
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'group.{}'.format(result.group('group')))
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continue
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self.logger.warning(
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'Dropped invalid phone/group '
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'({}) specified.'.format(target),
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)
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self.invalid_targets.append(target)
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continue
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else:
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# Send a message to ourselves
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self.targets.append(self.source)
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return
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def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
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**kwargs):
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"""
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Perform Signal API Notification
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"""
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if len(self.targets) == 0:
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# There were no services to notify
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self.logger.warning(
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'There were no Signal API targets to notify.')
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return False
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# error tracking (used for function return)
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has_error = False
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attachments = []
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if attach and self.attachment_support:
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for attachment in attach:
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# Perform some simple error checking
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if not attachment:
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# We could not access the attachment
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self.logger.error(
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'Could not access attachment {}.'.format(
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attachment.url(privacy=True)))
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return False
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try:
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with open(attachment.path, 'rb') as f:
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# Prepare our Attachment in Base64
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attachments.append(
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base64.b64encode(f.read()).decode('utf-8'))
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except (OSError, IOError) as e:
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self.logger.warning(
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'An I/O error occurred while reading {}.'.format(
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attachment.name if attachment else 'attachment'))
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self.logger.debug('I/O Exception: %s' % str(e))
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return False
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# Prepare our headers
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headers = {
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'User-Agent': self.app_id,
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'Content-Type': 'application/json',
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}
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# Format defined here:
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# https://bbernhard.github.io/signal-cli-rest-api\
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# /#/Messages/post_v2_send
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# Example:
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# {
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# "base64_attachments": [
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# "string"
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# ],
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# "message": "string",
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# "number": "string",
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# "recipients": [
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# "string"
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# ]
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# }
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# Prepare our payload
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payload = {
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'message': "{}{}".format(
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'' if not self.status else '{} '.format(
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self.asset.ascii(notify_type)), body).rstrip(),
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"number": self.source,
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"recipients": []
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}
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if attachments:
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# Store our attachments
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payload['base64_attachments'] = attachments
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# Determine Authentication
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auth = None
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if self.user:
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auth = (self.user, self.password)
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# Set our schema
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schema = 'https' if self.secure else 'http'
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# Construct our URL
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notify_url = '%s://%s' % (schema, self.host)
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if isinstance(self.port, int):
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notify_url += ':%d' % self.port
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notify_url += '/v2/send'
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# Send in batches if identified to do so
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batch_size = 1 if not self.batch else self.default_batch_size
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for index in range(0, len(self.targets), batch_size):
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# Prepare our recipients
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payload['recipients'] = self.targets[index:index + batch_size]
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self.logger.debug('Signal API POST URL: %s (cert_verify=%r)' % (
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notify_url, self.verify_certificate,
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))
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self.logger.debug('Signal API Payload: %s' % str(payload))
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# Always call throttle before any remote server i/o is made
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self.throttle()
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try:
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r = requests.post(
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notify_url,
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auth=auth,
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data=dumps(payload),
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headers=headers,
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verify=self.verify_certificate,
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timeout=self.request_timeout,
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)
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if r.status_code not in (
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requests.codes.ok, requests.codes.created):
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# We had a problem
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status_str = \
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NotifySignalAPI.http_response_code_lookup(
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r.status_code)
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self.logger.warning(
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'Failed to send {} Signal API notification{}: '
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'{}{}error={}.'.format(
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len(self.targets[index:index + batch_size]),
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' to {}'.format(self.targets[index])
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if batch_size == 1 else '(s)',
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status_str,
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', ' if status_str else '',
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r.status_code))
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self.logger.debug(
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'Response Details:\r\n{}'.format(r.content))
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# Mark our failure
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has_error = True
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continue
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else:
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self.logger.info(
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'Sent {} Signal API notification{}.'
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.format(
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len(self.targets[index:index + batch_size]),
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' to {}'.format(self.targets[index])
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if batch_size == 1 else '(s)',
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))
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except requests.RequestException as e:
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self.logger.warning(
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'A Connection error occured sending {} Signal API '
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'notification(s).'.format(
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len(self.targets[index:index + batch_size])))
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self.logger.debug('Socket Exception: %s' % str(e))
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# Mark our failure
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has_error = True
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continue
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return not has_error
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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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'batch': 'yes' if self.batch else 'no',
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'status': 'yes' if self.status else 'no',
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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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# Determine Authentication
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auth = ''
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if self.user and self.password:
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auth = '{user}:{password}@'.format(
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user=NotifySignalAPI.quote(self.user, safe=''),
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password=self.pprint(
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self.password, privacy, mode=PrivacyMode.Secret, safe=''),
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)
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elif self.user:
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auth = '{user}@'.format(
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user=NotifySignalAPI.quote(self.user, safe=''),
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)
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default_port = 443 if self.secure else 80
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# So we can strip out our own phone (if present); create a copy of our
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# targets
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if len(self.targets) == 1 and self.source in self.targets:
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targets = []
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elif len(self.targets) == 0:
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# invalid phone-no were specified
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targets = self.invalid_targets
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else:
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# append @ to non-phone number entries as they are groups
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# Remove group. prefix as well
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targets = \
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['@{}'.format(x[6:]) if x[0] != '+'
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else x for x in self.targets]
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return '{schema}://{auth}{hostname}{port}/{src}/{dst}?{params}'.format(
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schema=self.secure_protocol if self.secure else self.protocol,
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auth=auth,
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# never encode hostname since we're expecting it to be a valid one
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hostname=self.host,
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port='' if self.port is None or self.port == default_port
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else ':{}'.format(self.port),
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src=self.source,
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dst='/'.join(
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[NotifySignalAPI.quote(x, safe='@+') for x in targets]),
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params=NotifySignalAPI.urlencode(params),
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)
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def __len__(self):
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"""
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Returns the number of targets associated with this notification
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"""
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#
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# Factor batch into calculation
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#
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batch_size = 1 if not self.batch else self.default_batch_size
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targets = len(self.targets)
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if batch_size > 1:
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targets = int(targets / batch_size) + \
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(1 if targets % batch_size else 0)
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return targets
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@staticmethod
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def parse_url(url):
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"""
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Parses the URL and returns enough arguments that can allow
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us to re-instantiate this object.
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"""
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results = NotifyBase.parse_url(url, verify_host=False)
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if not results:
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# We're done early as we couldn't load the results
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return results
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# Get our entries; split_path() looks after unquoting content for us
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# by default
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results['targets'] = \
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NotifySignalAPI.split_path(results['fullpath'])
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# The hostname is our authentication key
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results['apikey'] = NotifySignalAPI.unquote(results['host'])
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if 'from' in results['qsd'] and len(results['qsd']['from']):
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results['source'] = \
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NotifySignalAPI.unquote(results['qsd']['from'])
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elif results['targets']:
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# The from phone no is the first entry in the list otherwise
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results['source'] = results['targets'].pop(0)
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# Support the 'to' variable so that we can support targets this way too
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# The 'to' makes it easier to use yaml configuration
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if 'to' in results['qsd'] and len(results['qsd']['to']):
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results['targets'] += \
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NotifySignalAPI.parse_phone_no(results['qsd']['to'])
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# Get Batch Mode Flag
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results['batch'] = \
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parse_bool(results['qsd'].get('batch', False))
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# Get status switch
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results['status'] = \
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parse_bool(results['qsd'].get('status', False))
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return results
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