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337 lines
11 KiB
337 lines
11 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
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# All rights reserved.
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#
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# This code is licensed under the MIT License.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files(the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions :
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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from os import urandom
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from json import loads
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import requests
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from .NotifyBase import NotifyBase
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from ..URLBase import PrivacyMode
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from ..common import NotifyType
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from ..utils import validate_regex
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from ..AppriseLocale import gettext_lazy as _
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# Default our global support flag
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CRYPTOGRAPHY_AVAILABLE = False
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try:
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from cryptography.hazmat.primitives import padding
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from cryptography.hazmat.primitives.ciphers import Cipher
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from cryptography.hazmat.primitives.ciphers import algorithms
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from cryptography.hazmat.primitives.ciphers import modes
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from cryptography.hazmat.backends import default_backend
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from base64 import urlsafe_b64encode
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import hashlib
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CRYPTOGRAPHY_AVAILABLE = True
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except ImportError:
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# no problem; this just means the added encryption functionality isn't
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# available. You can still send a SimplePush message
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pass
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class NotifySimplePush(NotifyBase):
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"""
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A wrapper for SimplePush Notifications
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"""
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# The default descriptive name associated with the Notification
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service_name = 'SimplePush'
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# The services URL
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service_url = 'https://simplepush.io/'
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# The default secure protocol
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secure_protocol = 'spush'
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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_simplepush'
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# SimplePush uses the http protocol with SimplePush requests
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notify_url = 'https://api.simplepush.io/send'
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# The maximum allowable characters allowed in the body per message
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body_maxlen = 10000
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# Defines the maximum allowable characters in the title
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title_maxlen = 1024
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# Define object templates
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templates = (
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'{schema}://{apikey}',
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'{schema}://{salt}:{password}@{apikey}',
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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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'apikey': {
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'name': _('API Key'),
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'type': 'string',
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'private': True,
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'required': True,
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},
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# Used for encrypted logins
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'password': {
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'name': _('Encrypted Password'),
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'type': 'string',
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'private': True,
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},
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'salt': {
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'name': _('Encrypted Salt'),
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'type': 'string',
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'private': True,
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'map_to': 'user',
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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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'event': {
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'name': _('Event'),
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'type': 'string',
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},
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})
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def __init__(self, apikey, event=None, **kwargs):
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"""
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Initialize SimplePush Object
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"""
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super(NotifySimplePush, self).__init__(**kwargs)
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# API Key (associated with project)
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self.apikey = validate_regex(apikey)
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if not self.apikey:
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msg = 'An invalid SimplePush API Key ' \
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'({}) was specified.'.format(apikey)
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self.logger.warning(msg)
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raise TypeError(msg)
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if event:
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# Event Name (associated with project)
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self.event = validate_regex(event)
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if not self.event:
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msg = 'An invalid SimplePush Event Name ' \
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'({}) was specified.'.format(event)
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self.logger.warning(msg)
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raise TypeError(msg)
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else:
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# Default Event Name
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self.event = None
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# Encrypt Message (providing support is available)
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if self.password and self.user and not CRYPTOGRAPHY_AVAILABLE:
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# Provide the end user at least some notification that they're
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# not getting what they asked for
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self.logger.warning(
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'SimplePush extended encryption is not supported by this '
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'system.')
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# Used/cached in _encrypt() function
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self._iv = None
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self._iv_hex = None
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self._key = None
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def _encrypt(self, content):
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"""
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Encrypts message for use with SimplePush
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"""
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if self._iv is None:
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# initialization vector and cache it
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self._iv = urandom(algorithms.AES.block_size // 8)
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# convert vector into hex string (used in payload)
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self._iv_hex = ''.join(["{:02x}".format(ord(self._iv[idx:idx + 1]))
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for idx in range(len(self._iv))]).upper()
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# encrypted key and cache it
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self._key = bytes(bytearray.fromhex(
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hashlib.sha1('{}{}'.format(self.password, self.user)
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.encode('utf-8')).hexdigest()[0:32]))
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padder = padding.PKCS7(algorithms.AES.block_size).padder()
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content = padder.update(content.encode()) + padder.finalize()
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encryptor = Cipher(
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algorithms.AES(self._key),
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modes.CBC(self._iv),
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default_backend()).encryptor()
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return urlsafe_b64encode(
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encryptor.update(content) + encryptor.finalize())
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def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
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"""
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Perform SimplePush Notification
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"""
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headers = {
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'User-Agent': self.app_id,
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'Content-type': "application/x-www-form-urlencoded",
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}
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# Prepare our payload
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payload = {
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'key': self.apikey,
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}
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if self.password and self.user and CRYPTOGRAPHY_AVAILABLE:
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body = self._encrypt(body)
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title = self._encrypt(title)
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payload.update({
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'encrypted': 'true',
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'iv': self._iv_hex,
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})
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# prepare SimplePush Object
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payload.update({
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'msg': body,
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'title': title,
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})
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if self.event:
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# Store Event
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payload['event'] = self.event
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self.logger.debug('SimplePush POST URL: %s (cert_verify=%r)' % (
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self.notify_url, self.verify_certificate,
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))
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self.logger.debug('SimplePush Payload: %s' % str(payload))
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# We need to rely on the status string returned in the SimplePush
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# response
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status_str = None
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status = None
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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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self.notify_url,
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data=payload,
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headers=headers,
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verify=self.verify_certificate,
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)
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# Get our SimplePush response (if it's possible)
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try:
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json_response = loads(r.content)
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status_str = json_response.get('message')
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status = json_response.get('status')
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except (TypeError, ValueError, AttributeError):
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# TypeError = r.content is not a String
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# ValueError = r.content is Unparsable
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# AttributeError = r.content is None
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pass
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if r.status_code != requests.codes.ok or status != 'OK':
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# We had a problem
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status_str = status_str if status_str else\
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NotifyBase.http_response_code_lookup(r.status_code)
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self.logger.warning(
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'Failed to send SimplePush notification:'
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'{}{}error={}.'.format(
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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('Response Details:\r\n{}'.format(r.content))
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# Return; we're done
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return False
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else:
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self.logger.info('Sent SimplePush notification.')
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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 SimplePush notification.')
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self.logger.debug('Socket Exception: %s' % str(e))
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# Return; we're done
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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 arguments set
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args = {
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'format': self.notify_format,
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'overflow': self.overflow_mode,
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'verify': 'yes' if self.verify_certificate else 'no',
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}
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if self.event:
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args['event'] = self.event
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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 = '{salt}:{password}@'.format(
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salt=self.pprint(
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self.user, privacy, mode=PrivacyMode.Secret, 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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return '{schema}://{auth}{apikey}/?{args}'.format(
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schema=self.secure_protocol,
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auth=auth,
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apikey=self.pprint(self.apikey, privacy, safe=''),
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args=NotifySimplePush.urlencode(args),
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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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Parses the URL and returns enough arguments that can allow
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us to substantiate this object.
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"""
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results = NotifyBase.parse_url(url)
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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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# Set the API Key
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results['apikey'] = NotifySimplePush.unquote(results['host'])
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# Event
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if 'event' in results['qsd'] and len(results['qsd']['event']):
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# Extract the account sid from an argument
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results['event'] = \
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NotifySimplePush.unquote(results['qsd']['event'])
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return results
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