mirror of
https://github.com/caronc/apprise-api.git
synced 2024-12-12 18:00:51 +01:00
746 lines
24 KiB
Python
746 lines
24 KiB
Python
# -*- 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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import re
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import binascii
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import os
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import tempfile
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import shutil
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import gzip
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import apprise
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import hashlib
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import errno
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import base64
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import requests
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from json import dumps
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from django.conf import settings
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from datetime import datetime
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# import the logging library
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import logging
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# Get an instance of a logger
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logger = logging.getLogger('django')
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class AppriseStoreMode(object):
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"""
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Defines the store modes of configuration
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"""
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# This is the default option. Content is cached and written by
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# it's key
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HASH = 'hash'
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# Content is written straight to disk using it's key
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# there is nothing further done
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SIMPLE = 'simple'
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# When set to disabled; stateful functionality is disabled
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DISABLED = 'disabled'
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class AttachmentPayload(object):
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"""
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Defines the supported Attachment Payload Types
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"""
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# BASE64
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BASE64 = 'base64'
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# URL request
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URL = 'url'
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STORE_MODES = (
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AppriseStoreMode.HASH,
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AppriseStoreMode.SIMPLE,
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AppriseStoreMode.DISABLED,
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)
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# Access our Attachment Manager Singleton
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A_MGR = apprise.AttachmentManager.AttachmentManager()
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# Access our Notification Manager Singleton
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N_MGR = apprise.NotificationManager.NotificationManager()
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class Attachment(A_MGR['file']):
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"""
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A Light Weight Attachment Object for Auto-cleanup that wraps the Apprise
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Attachments
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"""
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def __init__(self, filename, path=None, delete=True, **kwargs):
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"""
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Initialize our attachment
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"""
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self._filename = filename
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self.delete = delete
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self._path = None
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try:
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os.makedirs(settings.APPRISE_ATTACH_DIR, exist_ok=True)
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except OSError:
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# Permission error
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raise ValueError('Could not create directory {}'.format(
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settings.APPRISE_ATTACH_DIR))
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if not path:
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try:
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d, path = tempfile.mkstemp(dir=settings.APPRISE_ATTACH_DIR)
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# Close our file descriptor
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os.close(d)
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except FileNotFoundError:
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raise ValueError(
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'Could not prepare {} attachment in {}'.format(
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filename, settings.APPRISE_ATTACH_DIR))
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self._path = path
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# Prepare our item
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super().__init__(path=self._path, name=filename, **kwargs)
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# Update our file size based on the settings value
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self.max_file_size = settings.APPRISE_ATTACH_SIZE
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@property
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def filename(self):
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return self._filename
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@property
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def size(self):
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"""
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Return filesize
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"""
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return os.stat(self._path).st_size
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def __del__(self):
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"""
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De-Construtor is used to tidy up files during garbage collection
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"""
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if self.delete and self._path:
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try:
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os.remove(self._path)
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except FileNotFoundError:
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# no problem
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pass
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class HTTPAttachment(A_MGR['http']):
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"""
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A Light Weight Attachment Object for Auto-cleanup that wraps the Apprise
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Web Attachments
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"""
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def __init__(self, filename, delete=True, **kwargs):
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"""
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Initialize our attachment
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"""
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self._filename = filename
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self.delete = delete
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self._path = None
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try:
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os.makedirs(settings.APPRISE_ATTACH_DIR, exist_ok=True)
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except OSError:
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# Permission error
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raise ValueError('Could not create directory {}'.format(
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settings.APPRISE_ATTACH_DIR))
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try:
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d, self._path = tempfile.mkstemp(dir=settings.APPRISE_ATTACH_DIR)
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# Close our file descriptor
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os.close(d)
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except FileNotFoundError:
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raise ValueError(
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'Could not prepare {} attachment in {}'.format(
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filename, settings.APPRISE_ATTACH_DIR))
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# Prepare our item
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super().__init__(name=filename, **kwargs)
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# Update our file size based on the settings value
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self.max_file_size = settings.APPRISE_ATTACH_SIZE
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@property
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def filename(self):
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return self._filename
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@property
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def size(self):
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"""
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Return filesize
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"""
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return 0 if not self else os.stat(self._path).st_size
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def __del__(self):
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"""
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De-Construtor is used to tidy up files during garbage collection
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"""
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if self.delete and self._path:
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try:
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os.remove(self._path)
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except FileNotFoundError:
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# no problem
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pass
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def parse_attachments(attachment_payload, files_request):
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"""
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Takes the payload provided in a `/notify` call and extracts the
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attachments out of it.
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Content is written to a temporary directory until the garbage
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collection kicks in.
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"""
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attachments = []
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# Attachment Count
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count = sum([
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0 if not isinstance(attachment_payload, (set, tuple, list))
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else len(attachment_payload),
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0 if not isinstance(files_request, dict) else len(files_request),
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])
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if isinstance(attachment_payload, (dict, str, bytes)):
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# Convert and adjust counter
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attachment_payload = (attachment_payload, )
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count += 1
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if settings.APPRISE_MAX_ATTACHMENTS <= 0 or \
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(settings.APPRISE_MAX_ATTACHMENTS > 0 and
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count > settings.APPRISE_MAX_ATTACHMENTS):
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raise ValueError(
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"There is a maximum of %d attachments" %
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settings.APPRISE_MAX_ATTACHMENTS
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if settings.APPRISE_MAX_ATTACHMENTS > 0 else 0)
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if isinstance(attachment_payload, (tuple, list, set)):
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for no, entry in enumerate(attachment_payload, start=1):
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if isinstance(entry, (str, bytes)):
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filename = "attachment.%.3d" % no
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elif isinstance(entry, dict):
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try:
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filename = entry.get("filename", "").strip()
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# Max filename size is 250
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if len(filename) > 250:
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raise ValueError(
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"The filename associated with attachment "
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"%d is too long" % no)
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elif not filename:
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filename = "attachment.%.3d" % no
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except AttributeError:
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# not a string that was provided
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raise ValueError(
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"An invalid filename was provided for attachment %d" %
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no)
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else:
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# you must pass in a base64 string, or a dict containing our
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# required parameters
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raise ValueError(
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"An invalid filename was provided for attachment %d" % no)
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#
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# Prepare our Attachment
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#
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if isinstance(entry, str):
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if not re.match(r'^https?://.+', entry[:10], re.I):
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# We failed to retrieve the product
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raise ValueError(
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"Failed to load attachment "
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"%d (not web request): %s" % (no, entry))
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attachment = HTTPAttachment(
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filename, **A_MGR['http'].parse_url(entry))
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if not attachment:
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# We failed to retrieve the attachment
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raise ValueError(
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"Failed to retrieve attachment %d: %s" % (no, entry))
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else: # web, base64 or raw
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attachment = Attachment(filename)
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try:
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with open(attachment.path, 'wb') as f:
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# Write our content to disk
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if isinstance(entry, dict) and \
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AttachmentPayload.BASE64 in entry:
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# BASE64
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f.write(
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base64.b64decode(
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entry[AttachmentPayload.BASE64]))
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elif isinstance(entry, dict) and \
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AttachmentPayload.URL in entry:
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attachment = HTTPAttachment(
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filename, **A_MGR['http']
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.parse_url(entry[AttachmentPayload.URL]))
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if not attachment:
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# We failed to retrieve the attachment
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raise ValueError(
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"Failed to retrieve attachment "
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"%d: %s" % (no, entry))
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elif isinstance(entry, bytes):
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# RAW
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f.write(entry)
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else:
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raise ValueError(
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"Invalid filetype was provided for "
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"attachment %s" % filename)
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except binascii.Error:
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# The file ws not base64 encoded
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raise ValueError(
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"Invalid filecontent was provided for attachment %s" %
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filename)
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except OSError:
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raise ValueError(
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"Could not write attachment %s to disk" % filename)
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#
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# Some Validation
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#
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if settings.APPRISE_MAX_ATTACHMENT_SIZE > 0 and \
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attachment.size > settings.APPRISE_MAX_ATTACHMENT_SIZE:
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raise ValueError(
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"attachment %s's filesize is to large" % filename)
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# Add our attachment
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attachments.append(attachment)
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#
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# Now handle the request.FILES
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#
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if isinstance(files_request, dict):
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for no, (key, meta) in enumerate(
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files_request.items(), start=len(attachments) + 1):
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try:
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# Filetype is presumed to be of base class
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# django.core.files.UploadedFile
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filename = meta.name.strip()
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# Max filename size is 250
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if len(filename) > 250:
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raise ValueError(
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"The filename associated with attachment "
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"%d is too long" % no)
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elif not filename:
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filename = "attachment.%.3d" % no
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except (AttributeError, TypeError):
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raise ValueError(
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"An invalid filename was provided for attachment %d" % no)
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#
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# Prepare our Attachment
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#
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attachment = Attachment(filename)
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try:
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with open(attachment.path, 'wb') as f:
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# Write our content to disk
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f.write(meta.read())
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except OSError:
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raise ValueError(
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"Could not write attachment %s to disk" % filename)
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#
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# Some Validation
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#
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if settings.APPRISE_MAX_ATTACHMENT_SIZE > 0 and \
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attachment.size > settings.APPRISE_MAX_ATTACHMENT_SIZE:
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raise ValueError(
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"attachment %s's filesize is to large" % filename)
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# Add our attachment
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attachments.append(attachment)
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return attachments
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class SimpleFileExtension(object):
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"""
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Defines the simple file exension lookups
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"""
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# Simple Configuration file
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TEXT = 'cfg'
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# YAML Configuration file
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YAML = 'yml'
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SIMPLE_FILE_EXTENSION_MAPPING = {
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apprise.ConfigFormat.TEXT: SimpleFileExtension.TEXT,
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apprise.ConfigFormat.YAML: SimpleFileExtension.YAML,
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SimpleFileExtension.TEXT: SimpleFileExtension.TEXT,
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SimpleFileExtension.YAML: SimpleFileExtension.YAML,
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}
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SIMPLE_FILE_EXTENSIONS = (SimpleFileExtension.TEXT, SimpleFileExtension.YAML)
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class AppriseConfigCache(object):
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"""
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Designed to make it easy to store/read contact back from disk in a cache
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type structure that is fast.
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"""
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def __init__(self, cache_root, salt="apprise", mode=AppriseStoreMode.HASH):
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"""
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Works relative to the cache_root
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"""
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self.root = cache_root
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self.salt = salt.encode()
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self.mode = mode.strip().lower()
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if self.mode not in STORE_MODES:
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self.mode = AppriseStoreMode.DISABLED
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logger.error(
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'APPRISE_STATEFUL_MODE {} is not supported; '
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'reverted to {}.'.format(mode, self.mode))
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def put(self, key, content, fmt):
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"""
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Based on the key specified, content is written to disk (compressed)
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key: is an alphanumeric string needed to write and read back this
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file being written.
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content: the content to be written to disk
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fmt: the content config format (of type apprise.ConfigFormat)
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"""
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# There isn't a lot of error handling done here as it is presumed most
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# of the checking has been done higher up.
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if self.mode == AppriseStoreMode.DISABLED:
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# Do nothing
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return False
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# First two characters are reserved for cache level directory writing.
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path, filename = self.path(key)
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try:
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os.makedirs(path, exist_ok=True)
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except OSError:
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# Permission error
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logger.error('Could not create directory {}'.format(path))
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return False
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# Write our file to a temporary file
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d, tmp_path = tempfile.mkstemp(suffix='.tmp', dir=path)
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# Close the file handle provided by mkstemp()
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# We're reopening it, and it can't be renamed while open on Windows
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os.close(d)
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if self.mode == AppriseStoreMode.HASH:
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try:
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with gzip.open(tmp_path, 'wb') as f:
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# Write our content to disk
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f.write(content.encode())
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except OSError:
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# Handle failure
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os.remove(tmp_path)
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return False
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else: # AppriseStoreMode.SIMPLE
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# Update our file extenion based on our fmt
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fmt = SIMPLE_FILE_EXTENSION_MAPPING[fmt]
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try:
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with open(tmp_path, 'wb') as f:
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# Write our content to disk
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f.write(content.encode())
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except OSError:
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# Handle failure
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os.remove(tmp_path)
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return False
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# If we reach here we successfully wrote the content. We now safely
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# move our configuration into place. The following writes our content
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# to disk
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shutil.move(tmp_path, os.path.join(
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path, '{}.{}'.format(filename, fmt)))
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# perform tidy of any other lingering files of other type in case
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# configuration changed from TEXT -> YAML or YAML -> TEXT
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if self.mode == AppriseStoreMode.HASH:
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if self.clear(key, set(apprise.CONFIG_FORMATS) - {fmt}) is False:
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# We couldn't remove an existing entry; clear what we just
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# created
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self.clear(key, {fmt})
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# fail
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return False
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elif self.clear(key, set(SIMPLE_FILE_EXTENSIONS) - {fmt}) is False:
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# We couldn't remove an existing entry; clear what we just
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# created
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self.clear(key, {fmt})
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# fail
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return False
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return True
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def get(self, key):
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"""
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Based on the key specified, content is written to disk (compressed)
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key: is an alphanumeric string needed to write and read back this
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file being written.
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The function returns a tuple of (content, fmt) where the content
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is the uncompressed content found in the file and fmt is the
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content representation (of type apprise.ConfigFormat).
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If no data was found, then (None, None) is returned.
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"""
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if self.mode == AppriseStoreMode.DISABLED:
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# Do nothing
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return (None, '')
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# There isn't a lot of error handling done here as it is presumed most
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# of the checking has been done higher up.
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# First two characters are reserved for cache level directory writing.
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path, filename = self.path(key)
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# prepare our format to return
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fmt = None
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# Test the only possible hashed files we expect to find
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if self.mode == AppriseStoreMode.HASH:
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text_file = os.path.join(
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path, '{}.{}'.format(filename, apprise.ConfigFormat.TEXT))
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yaml_file = os.path.join(
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path, '{}.{}'.format(filename, apprise.ConfigFormat.YAML))
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else: # AppriseStoreMode.SIMPLE
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text_file = os.path.join(
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path, '{}.{}'.format(filename, SimpleFileExtension.TEXT))
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yaml_file = os.path.join(
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path, '{}.{}'.format(filename, SimpleFileExtension.YAML))
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if os.path.isfile(text_file):
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fmt = apprise.ConfigFormat.TEXT
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path = text_file
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elif os.path.isfile(yaml_file):
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fmt = apprise.ConfigFormat.YAML
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path = yaml_file
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else:
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# Not found; we set the fmt to something other than none as
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# an indication for the upstream handling to know that we didn't
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# fail on error
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return (None, '')
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|
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# Initialize our content
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content = None
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if self.mode == AppriseStoreMode.HASH:
|
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try:
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with gzip.open(path, 'rb') as f:
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# Write our content to disk
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content = f.read().decode()
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except OSError:
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# all none return means to let upstream know we had a hard
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# failure
|
|
return (None, None)
|
|
|
|
else: # AppriseStoreMode.SIMPLE
|
|
try:
|
|
with open(path, 'rb') as f:
|
|
# Write our content to disk
|
|
content = f.read().decode()
|
|
|
|
except OSError:
|
|
# all none return means to let upstream know we had a hard
|
|
# failure
|
|
return (None, None)
|
|
|
|
# return our read content
|
|
return (content, fmt)
|
|
|
|
def clear(self, key, formats=None):
|
|
"""
|
|
Removes any content associated with the specified key should it
|
|
exist.
|
|
|
|
None is returned if there was nothing to clear
|
|
True is returned if content was cleared
|
|
False is returned if an internal error prevented data from being
|
|
cleared
|
|
"""
|
|
# Default our response None
|
|
response = None
|
|
|
|
if self.mode == AppriseStoreMode.DISABLED:
|
|
# Do nothing
|
|
return response
|
|
|
|
if formats is None:
|
|
formats = apprise.CONFIG_FORMATS
|
|
|
|
path, filename = self.path(key)
|
|
for fmt in formats:
|
|
# Eliminate any existing content if present
|
|
try:
|
|
# Handle failure
|
|
os.remove(os.path.join(path, '{}.{}'.format(
|
|
filename,
|
|
fmt if self.mode == AppriseStoreMode.HASH
|
|
else SIMPLE_FILE_EXTENSION_MAPPING[fmt])))
|
|
|
|
# If we reach here, an element was removed
|
|
response = True
|
|
|
|
except OSError as e:
|
|
if e.errno != errno.ENOENT:
|
|
# We were unable to remove the file
|
|
response = False
|
|
|
|
return response
|
|
|
|
def path(self, key):
|
|
"""
|
|
returns the path and filename content should be written to based on the
|
|
specified key
|
|
"""
|
|
if self.mode == AppriseStoreMode.HASH:
|
|
encoded_key = hashlib.sha224(self.salt + key.encode()).hexdigest()
|
|
path = os.path.join(self.root, encoded_key[0:2])
|
|
return (path, encoded_key[2:])
|
|
|
|
else: # AppriseStoreMode.SIMPLE
|
|
return (self.root, key)
|
|
|
|
|
|
# Initialize our singleton
|
|
ConfigCache = AppriseConfigCache(
|
|
settings.APPRISE_CONFIG_DIR, salt=settings.SECRET_KEY,
|
|
mode=settings.APPRISE_STATEFUL_MODE)
|
|
|
|
|
|
def apply_global_filters():
|
|
#
|
|
# Apply Any Global Filters (if identified)
|
|
#
|
|
if settings.APPRISE_ALLOW_SERVICES:
|
|
alphanum_re = re.compile(
|
|
r'^(?P<name>[a-z][a-z0-9]+)', re.IGNORECASE)
|
|
entries = \
|
|
[alphanum_re.match(x).group('name').lower()
|
|
for x in re.split(r'[ ,]+', settings.APPRISE_ALLOW_SERVICES)
|
|
if alphanum_re.match(x)]
|
|
|
|
N_MGR.enable_only(*entries)
|
|
|
|
elif settings.APPRISE_DENY_SERVICES:
|
|
alphanum_re = re.compile(
|
|
r'^(?P<name>[a-z][a-z0-9]+)', re.IGNORECASE)
|
|
entries = \
|
|
[alphanum_re.match(x).group('name').lower()
|
|
for x in re.split(r'[ ,]+', settings.APPRISE_DENY_SERVICES)
|
|
if alphanum_re.match(x)]
|
|
|
|
N_MGR.disable(*entries)
|
|
|
|
|
|
def gen_unique_config_id():
|
|
"""
|
|
Generates a unique configuration ID
|
|
"""
|
|
# our key to use
|
|
h = hashlib.sha256()
|
|
h.update(datetime.now().strftime('%Y%m%d%H%M%S%f').encode('utf-8'))
|
|
h.update(settings.SECRET_KEY.encode('utf-8'))
|
|
return h.hexdigest()
|
|
|
|
|
|
def send_webhook(payload):
|
|
"""
|
|
POST our webhook results
|
|
"""
|
|
|
|
# Prepare HTTP Headers
|
|
headers = {
|
|
'User-Agent': 'Apprise-API',
|
|
'Content-Type': 'application/json',
|
|
}
|
|
|
|
if not apprise.utils.VALID_URL_RE.match(
|
|
settings.APPRISE_WEBHOOK_URL):
|
|
logger.warning(
|
|
'The Apprise Webhook Result URL is not a valid web based URI')
|
|
return
|
|
|
|
# Parse our URL
|
|
results = apprise.URLBase.parse_url(settings.APPRISE_WEBHOOK_URL)
|
|
if not results:
|
|
logger.warning('The Apprise Webhook Result URL is not parseable')
|
|
return
|
|
|
|
if results['schema'] not in ('http', 'https'):
|
|
logger.warning(
|
|
'The Apprise Webhook Result URL is not using the HTTP protocol')
|
|
return
|
|
|
|
# Load our URL
|
|
base = apprise.URLBase(**results)
|
|
|
|
# Our Query String Dictionary; we use this to track arguments
|
|
# specified that aren't otherwise part of this class
|
|
params = {k: v for k, v in results.get('qsd', {}).items()
|
|
if k not in base.template_args}
|
|
|
|
try:
|
|
requests.post(
|
|
base.request_url,
|
|
data=dumps(payload),
|
|
params=params,
|
|
headers=headers,
|
|
auth=base.request_auth,
|
|
verify=base.verify_certificate,
|
|
timeout=base.request_timeout,
|
|
)
|
|
|
|
except requests.RequestException as e:
|
|
logger.warning(
|
|
'A Connection error occurred sending the Apprise Webhook '
|
|
'results to %s.' % base.url(privacy=True))
|
|
logger.debug('Socket Exception: %s' % str(e))
|
|
|
|
return
|