# -*- coding: utf-8 -*- # # Copyright (C) 2019 Chris Caron # All rights reserved. # # This code is licensed under the MIT License. # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files(the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and / or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions : # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. # There are 2 ways to use this plugin... # Method 1: Via Webhook: # Visit https://my.slack.com/services/new/incoming-webhook/ # to create a new incoming webhook for your account. You'll need to # follow the wizard to pre-determine the channel(s) you want your # message to broadcast to, and when you're complete, you will # recieve a URL that looks something like this: # https://hooks.slack.com/services/T1JJ3T3L2/A1BRTD4JD/TIiajkdnlazkcOXrIdevi7 # ^ ^ ^ # | | | # These are important <--------------^---------^---------------^ # # Method 2: Via a Bot: # 1. visit: https://api.slack.com/apps?new_app=1 # 2. Pick an App Name (such as Apprise) and select your workspace. Then # press 'Create App' # 3. You'll be able to click on 'Bots' from here where you can then choose # to add a 'Bot User'. Give it a name and choose 'Add Bot User'. # 4. Now you can choose 'Install App' to which you can choose 'Install App # to Workspace'. # 5. You will need to authorize the app which you get promopted to do. # 6. Finally you'll get some important information providing you your # 'OAuth Access Token' and 'Bot User OAuth Access Token' such as: # slack://{Oauth Access Token} # # ... which might look something like: # slack://xoxp-1234-1234-1234-4ddbc191d40ee098cbaae6f3523ada2d # ... or: # slack://xoxb-1234-1234-4ddbc191d40ee098cbaae6f3523ada2d # import re import requests from json import dumps from json import loads from time import time from .NotifyBase import NotifyBase from ..common import NotifyImageSize from ..common import NotifyType from ..common import NotifyFormat from ..utils import parse_bool from ..utils import parse_list from ..utils import validate_regex from ..AppriseLocale import gettext_lazy as _ # Extend HTTP Error Messages SLACK_HTTP_ERROR_MAP = { 401: 'Unauthorized - Invalid Token.', } # Used to break path apart into list of channels CHANNEL_LIST_DELIM = re.compile(r'[ \t\r\n,#\\/]+') class SlackMode(object): """ Tracks the mode of which we're using Slack """ # We're dealing with a webhook # Our token looks like: T1JJ3T3L2/A1BRTD4JD/TIiajkdnlazkcOXrIdevi7 WEBHOOK = 'webhook' # We're dealing with a bot (using the OAuth Access Token) # Our token looks like: xoxp-1234-1234-1234-abc124 or # Our token looks like: xoxb-1234-1234-abc124 or BOT = 'bot' # Define our Slack Modes SLACK_MODES = ( SlackMode.WEBHOOK, SlackMode.BOT, ) class NotifySlack(NotifyBase): """ A wrapper for Slack Notifications """ # The default descriptive name associated with the Notification service_name = 'Slack' # The services URL service_url = 'https://slack.com/' # The default secure protocol secure_protocol = 'slack' # Allow 50 requests per minute (Tier 2). # 60/50 = 0.2 request_rate_per_sec = 1.2 # A URL that takes you to the setup/help of the specific protocol setup_url = 'https://github.com/caronc/apprise/wiki/Notify_slack' # Slack Webhook URL webhook_url = 'https://hooks.slack.com/services' # Slack API URL (used with Bots) api_url = 'https://slack.com/api/{}' # Allows the user to specify the NotifyImageSize object image_size = NotifyImageSize.XY_72 # The maximum allowable characters allowed in the body per message body_maxlen = 35000 # Default Notification Format notify_format = NotifyFormat.MARKDOWN # Bot's do not have default channels to notify; so #general # becomes the default channel in BOT mode default_notification_channel = '#general' # Define object templates templates = ( # Webhook '{schema}://{token_a}/{token_b}{token_c}', '{schema}://{botname}@{token_a}/{token_b}{token_c}', '{schema}://{token_a}/{token_b}{token_c}/{targets}', '{schema}://{botname}@{token_a}/{token_b}{token_c}/{targets}', # Bot '{schema}://{access_token}/', '{schema}://{access_token}/{targets}', ) # Define our template tokens template_tokens = dict(NotifyBase.template_tokens, **{ 'botname': { 'name': _('Bot Name'), 'type': 'string', 'map_to': 'user', }, # Bot User OAuth Access Token # which always starts with xoxp- e.g.: # xoxb-1234-1234-4ddbc191d40ee098cbaae6f3523ada2d 'access_token': { 'name': _('OAuth Access Token'), 'type': 'string', 'private': True, 'required': True, 'regex': (r'^xox[abp]-[A-Z0-9-]+$', 'i'), }, # Token required as part of the Webhook request # /AAAAAAAAA/........./........................ 'token_a': { 'name': _('Token A'), 'type': 'string', 'private': True, 'required': True, 'regex': (r'^[A-Z0-9]{9}$', 'i'), }, # Token required as part of the Webhook request # /........./BBBBBBBBB/........................ 'token_b': { 'name': _('Token B'), 'type': 'string', 'private': True, 'required': True, 'regex': (r'^[A-Z0-9]{9}$', 'i'), }, # Token required as part of the Webhook request # /........./........./CCCCCCCCCCCCCCCCCCCCCCCC 'token_c': { 'name': _('Token C'), 'type': 'string', 'private': True, 'required': True, 'regex': (r'^[A-Za-z0-9]{24}$', 'i'), }, 'target_encoded_id': { 'name': _('Target Encoded ID'), 'type': 'string', 'prefix': '+', 'map_to': 'targets', }, 'target_user': { 'name': _('Target User'), 'type': 'string', 'prefix': '@', 'map_to': 'targets', }, 'target_channels': { 'name': _('Target Channel'), 'type': 'string', 'prefix': '#', 'map_to': 'targets', }, 'targets': { 'name': _('Targets'), 'type': 'list:string', }, }) # Define our template arguments template_args = dict(NotifyBase.template_args, **{ 'image': { 'name': _('Include Image'), 'type': 'bool', 'default': True, 'map_to': 'include_image', }, 'footer': { 'name': _('Include Footer'), 'type': 'bool', 'default': True, 'map_to': 'include_footer', }, 'to': { 'alias_of': 'targets', }, }) def __init__(self, access_token=None, token_a=None, token_b=None, token_c=None, targets=None, include_image=True, include_footer=True, **kwargs): """ Initialize Slack Object """ super(NotifySlack, self).__init__(**kwargs) # Setup our mode self.mode = SlackMode.BOT if access_token else SlackMode.WEBHOOK if self.mode is SlackMode.WEBHOOK: self.token_a = validate_regex( token_a, *self.template_tokens['token_a']['regex']) if not self.token_a: msg = 'An invalid Slack (first) Token ' \ '({}) was specified.'.format(token_a) self.logger.warning(msg) raise TypeError(msg) self.token_b = validate_regex( token_b, *self.template_tokens['token_b']['regex']) if not self.token_b: msg = 'An invalid Slack (second) Token ' \ '({}) was specified.'.format(token_b) self.logger.warning(msg) raise TypeError(msg) self.token_c = validate_regex( token_c, *self.template_tokens['token_c']['regex']) if not self.token_c: msg = 'An invalid Slack (third) Token ' \ '({}) was specified.'.format(token_c) self.logger.warning(msg) raise TypeError(msg) else: self.access_token = validate_regex( access_token, *self.template_tokens['access_token']['regex']) if not self.access_token: msg = 'An invalid Slack OAuth Access Token ' \ '({}) was specified.'.format(access_token) self.logger.warning(msg) raise TypeError(msg) if not self.user: self.logger.warning( 'No user was specified; using "%s".' % self.app_id) # Build list of channels self.channels = parse_list(targets) if len(self.channels) == 0: # No problem; the webhook is smart enough to just notify the # channel it was created for; adding 'None' is just used as # a flag lower to not set the channels self.channels.append( None if self.mode is SlackMode.WEBHOOK else self.default_notification_channel) # Formatting requirements are defined here: # https://api.slack.com/docs/message-formatting self._re_formatting_map = { # New lines must become the string version r'\r\*\n': '\\n', # Escape other special characters r'&': '&', r'<': '<', r'>': '>', } # Iterate over above list and store content accordingly self._re_formatting_rules = re.compile( r'(' + '|'.join(self._re_formatting_map.keys()) + r')', re.IGNORECASE, ) # Place a thumbnail image inline with the message body self.include_image = include_image # Place a footer with each post self.include_footer = include_footer return def send(self, body, title='', notify_type=NotifyType.INFO, attach=None, **kwargs): """ Perform Slack Notification """ # error tracking (used for function return) has_error = False # Perform Formatting title = self._re_formatting_rules.sub( # pragma: no branch lambda x: self._re_formatting_map[x.group()], title, ) body = self._re_formatting_rules.sub( # pragma: no branch lambda x: self._re_formatting_map[x.group()], body, ) # Prepare JSON Object (applicable to both WEBHOOK and BOT mode) payload = { 'username': self.user if self.user else self.app_id, # Use Markdown language 'mrkdwn': (self.notify_format == NotifyFormat.MARKDOWN), 'attachments': [{ 'title': title, 'text': body, 'color': self.color(notify_type), # Time 'ts': time(), }], } # Prepare our URL (depends on mode) if self.mode is SlackMode.WEBHOOK: url = '{}/{}/{}/{}'.format( self.webhook_url, self.token_a, self.token_b, self.token_c, ) else: # SlackMode.BOT url = self.api_url.format('chat.postMessage') if self.include_footer: # Include the footer only if specified to do so payload['attachments'][0]['footer'] = self.app_id if attach and self.mode is SlackMode.WEBHOOK: # Be friendly; let the user know why they can't send their # attachments if using the Webhook mode self.logger.warning( 'Slack Webhooks do not support attachments.') # Create a copy of the channel list channels = list(self.channels) attach_channel_list = [] while len(channels): channel = channels.pop(0) if channel is not None: _channel = validate_regex( channel, r'[+#@]?(?P[A-Z0-9_]{1,32})') if not _channel: # Channel over-ride was specified self.logger.warning( "The specified target {} is invalid;" "skipping.".format(_channel)) # Mark our failure has_error = True continue if len(_channel) > 1 and _channel[0] == '+': # Treat as encoded id if prefixed with a + payload['channel'] = _channel[1:] elif len(_channel) > 1 and _channel[0] == '@': # Treat @ value 'as is' payload['channel'] = _channel else: # Prefix with channel hash tag payload['channel'] = '#{}'.format(_channel) # Store the valid and massaged payload that is recognizable by # slack. This list is used for sending attachments later. attach_channel_list.append(payload['channel']) # Acquire our to-be footer icon if configured to do so image_url = None if not self.include_image \ else self.image_url(notify_type) if image_url: payload['icon_url'] = image_url if self.include_footer: payload['attachments'][0]['footer_icon'] = image_url response = self._send(url, payload) if not response: # Handle any error has_error = True continue self.logger.info( 'Sent Slack notification{}.'.format( ' to {}'.format(channel) if channel is not None else '')) if attach and self.mode is SlackMode.BOT and attach_channel_list: # Send our attachments (can only be done in bot mode) for attachment in attach: # Perform some simple error checking if not attachment: # We could not access the attachment self.logger.error( 'Could not access attachment {}.'.format( attachment.url(privacy=True))) return False self.logger.debug( 'Posting Slack attachment {}'.format( attachment.url(privacy=True))) # Prepare API Upload Payload _payload = { 'filename': attachment.name, 'channels': ','.join(attach_channel_list) } # Our URL _url = self.api_url.format('files.upload') response = self._send(_url, _payload, attach=attachment) if not (response and response.get('file') and response['file'].get('url_private')): # We failed to post our attachments, take an early exit return False return not has_error def _send(self, url, payload, attach=None, **kwargs): """ Wrapper to the requests (post) object """ self.logger.debug('Slack POST URL: %s (cert_verify=%r)' % ( url, self.verify_certificate, )) self.logger.debug('Slack Payload: %s' % str(payload)) headers = { 'User-Agent': self.app_id, } if not attach: headers['Content-Type'] = 'application/json; charset=utf-8' if self.mode is SlackMode.BOT: headers['Authorization'] = 'Bearer {}'.format(self.access_token) # Our response object response = None # Always call throttle before any remote server i/o is made self.throttle() # Our attachment path (if specified) files = None try: # Open our attachment path if required: if attach: files = {'file': (attach.name, open(attach.path, 'rb'))} r = requests.post( url, data=payload if attach else dumps(payload), headers=headers, files=files, verify=self.verify_certificate, ) if r.status_code != requests.codes.ok: # We had a problem status_str = \ NotifySlack.http_response_code_lookup( r.status_code, SLACK_HTTP_ERROR_MAP) self.logger.warning( 'Failed to send {}to Slack: ' '{}{}error={}.'.format( attach.name if attach else '', status_str, ', ' if status_str else '', r.status_code)) self.logger.debug( 'Response Details:\r\n{}'.format(r.content)) return False elif attach: # Attachment posts return a JSON string try: response = loads(r.content) except (AttributeError, TypeError, ValueError): # ValueError = r.content is Unparsable # TypeError = r.content is None # AttributeError = r is None pass if not (response and response.get('ok', True)): # Bare minimum requirements not met self.logger.warning( 'Failed to send {}to Slack: error={}.'.format( attach.name if attach else '', r.status_code)) self.logger.debug( 'Response Details:\r\n{}'.format(r.content)) return False else: response = r.content # Message Post Response looks like this: # { # "attachments": [ # { # "color": "3AA3E3", # "fallback": "test", # "id": 1, # "text": "my body", # "title": "my title", # "ts": 1573694687 # } # ], # "bot_id": "BAK4K23G5", # "icons": { # "image_48": "https://s3-us-west-2.amazonaws.com/... # }, # "subtype": "bot_message", # "text": "", # "ts": "1573694689.003700", # "type": "message", # "username": "Apprise" # } # File Attachment Responses look like this # { # "file": { # "channels": [], # "comments_count": 0, # "created": 1573617523, # "display_as_bot": false, # "editable": false, # "external_type": "", # "filetype": "png", # "groups": [], # "has_rich_preview": false, # "id": "FQJJLDAHM", # "image_exif_rotation": 1, # "ims": [], # "is_external": false, # "is_public": false, # "is_starred": false, # "mimetype": "image/png", # "mode": "hosted", # "name": "apprise-test.png", # "original_h": 640, # "original_w": 640, # "permalink": "https://{name}.slack.com/files/... # "permalink_public": "https://slack-files.com/... # "pretty_type": "PNG", # "public_url_shared": false, # "shares": {}, # "size": 238810, # "thumb_160": "https://files.slack.com/files-tmb/... # "thumb_360": "https://files.slack.com/files-tmb/... # "thumb_360_h": 360, # "thumb_360_w": 360, # "thumb_480": "https://files.slack.com/files-tmb/... # "thumb_480_h": 480, # "thumb_480_w": 480, # "thumb_64": "https://files.slack.com/files-tmb/... # "thumb_80": "https://files.slack.com/files-tmb/... # "thumb_tiny": abcd... # "timestamp": 1573617523, # "title": "apprise-test", # "url_private": "https://files.slack.com/files-pri/... # "url_private_download": "https://files.slack.com/files-... # "user": "UADKLLMJT", # "username": "" # }, # "ok": true # } except requests.RequestException as e: self.logger.warning( 'A Connection error occured posting {}to Slack.'.format( attach.name if attach else '')) self.logger.debug('Socket Exception: %s' % str(e)) return False except (OSError, IOError) as e: self.logger.warning( 'An I/O error occured while reading {}.'.format( attach.name if attach else 'attachment')) self.logger.debug('I/O Exception: %s' % str(e)) return False finally: # Close our file (if it's open) stored in the second element # of our files tuple (index 1) if files: files['file'][1].close() # Return the response for processing return response def url(self, privacy=False, *args, **kwargs): """ Returns the URL built dynamically based on specified arguments. """ # Define any arguments set args = { 'format': self.notify_format, 'overflow': self.overflow_mode, 'image': 'yes' if self.include_image else 'no', 'footer': 'yes' if self.include_footer else 'no', 'verify': 'yes' if self.verify_certificate else 'no', } if self.mode == SlackMode.WEBHOOK: # Determine if there is a botname present botname = '' if self.user: botname = '{botname}@'.format( botname=NotifySlack.quote(self.user, safe=''), ) return '{schema}://{botname}{token_a}/{token_b}/{token_c}/'\ '{targets}/?{args}'.format( schema=self.secure_protocol, botname=botname, token_a=self.pprint(self.token_a, privacy, safe=''), token_b=self.pprint(self.token_b, privacy, safe=''), token_c=self.pprint(self.token_c, privacy, safe=''), targets='/'.join( [NotifySlack.quote(x, safe='') for x in self.channels]), args=NotifySlack.urlencode(args), ) # else -> self.mode == SlackMode.BOT: return '{schema}://{access_token}/{targets}/'\ '?{args}'.format( schema=self.secure_protocol, access_token=self.pprint(self.access_token, privacy, safe=''), targets='/'.join( [NotifySlack.quote(x, safe='') for x in self.channels]), args=NotifySlack.urlencode(args), ) @staticmethod def parse_url(url): """ Parses the URL and returns enough arguments that can allow us to substantiate this object. """ results = NotifyBase.parse_url(url, verify_host=False) if not results: # We're done early as we couldn't load the results return results # The first token is stored in the hostname token = NotifySlack.unquote(results['host']) # Get unquoted entries entries = NotifySlack.split_path(results['fullpath']) # Verify if our token_a us a bot token or part of a webhook: if token.startswith('xo'): # We're dealing with a bot results['access_token'] = token else: # We're dealing with a webhook results['token_a'] = token # Now fetch the remaining tokens try: results['token_b'] = entries.pop(0) except IndexError: # We're done results['token_b'] = None try: results['token_c'] = entries.pop(0) except IndexError: # We're done results['token_c'] = None # assign remaining entries to the channels we wish to notify results['targets'] = entries # Support the 'to' variable so that we can support rooms this way too # The 'to' makes it easier to use yaml configuration if 'to' in results['qsd'] and len(results['qsd']['to']): results['targets'] += [x for x in filter( bool, CHANNEL_LIST_DELIM.split( NotifySlack.unquote(results['qsd']['to'])))] # Get Image Flag results['include_image'] = \ parse_bool(results['qsd'].get('image', True)) # Get Footer Flag results['include_footer'] = \ parse_bool(results['qsd'].get('footer', True)) return results @staticmethod def parse_native_url(url): """ Support https://hooks.slack.com/services/TOKEN_A/TOKEN_B/TOKEN_C """ result = re.match( r'^https?://hooks\.slack\.com/services/' r'(?P[A-Z0-9]+)/' r'(?P[A-Z0-9]+)/' r'(?P[A-Z0-9]+)/?' r'(?P\?.+)?$', url, re.I) if result: return NotifySlack.parse_url( '{schema}://{token_a}/{token_b}/{token_c}/{args}'.format( schema=NotifySlack.secure_protocol, token_a=result.group('token_a'), token_b=result.group('token_b'), token_c=result.group('token_c'), args='' if not result.group('args') else result.group('args'))) return None