# -*- coding: utf-8 -*- # BSD 3-Clause License # # Apprise - Push Notification Library. # Copyright (c) 2023, Chris Caron # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # 1. Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # # 2. Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # 3. Neither the name of the copyright holder nor the names of its # contributors may be used to endorse or promote products derived from # this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # API Details: # https://docs.microsoft.com/en-us/previous-versions/office/\ # office-365-api/?redirectedfrom=MSDN # Information on sending an email: # https://docs.microsoft.com/en-us/graph/api/user-sendmail\ # ?view=graph-rest-1.0&tabs=http # Steps to get your Microsoft Client ID, Client Secret, and Tenant ID: # 1. You should have valid Microsoft personal account. Go to Azure Portal # 2. Go to -> Microsoft Active Directory --> App Registrations # 3. Click new -> give any name (your choice) in Name field -> select # personal Microsoft accounts only --> Register # 4. Now you have your client_id & Tenant id. # 5. To create client_secret , go to active directory -> # Certificate & Tokens -> New client secret # **This is auto-generated string which may have '@' and '?' # characters in it. You should encode these to prevent # from having any issues.** # 6. Now need to set permission Active directory -> API permissions -> # Add permission (search mail) , add relevant permission. # 7. Set the redirect uri (Web) to: # https://login.microsoftonline.com/common/oauth2/nativeclient # # ...and click register. # # This needs to be inserted into the "Redirect URI" text box as simply # checking the check box next to this link seems to be insufficient. # This is the default redirect uri used by this library, but you can use # any other if you want. # # 8. Now you're good to go import requests from datetime import datetime from datetime import timedelta from json import loads from json import dumps from .NotifyBase import NotifyBase from ..URLBase import PrivacyMode from ..common import NotifyFormat from ..common import NotifyType from ..utils import is_email from ..utils import parse_emails from ..utils import validate_regex from ..AppriseLocale import gettext_lazy as _ class NotifyOffice365(NotifyBase): """ A wrapper for Office 365 Notifications """ # The default descriptive name associated with the Notification service_name = 'Office 365' # The services URL service_url = 'https://office.com/' # The default protocol secure_protocol = 'o365' # Allow 300 requests per minute. # 60/300 = 0.2 request_rate_per_sec = 0.20 # A URL that takes you to the setup/help of the specific protocol setup_url = 'https://github.com/caronc/apprise/wiki/Notify_office365' # URL to Microsoft Graph Server graph_url = 'https://graph.microsoft.com' # Authentication URL auth_url = 'https://login.microsoftonline.com/{tenant}/oauth2/v2.0/token' # Use all the direct application permissions you have configured for your # app. The endpoint should issue a token for the ones associated with the # resource you want to use. # see https://docs.microsoft.com/en-us/azure/active-directory/develop/\ # v2-permissions-and-consent#the-default-scope scope = '.default' # Default Notify Format notify_format = NotifyFormat.HTML # Define object templates templates = ( '{schema}://{tenant}:{email}/{client_id}/{secret}', '{schema}://{tenant}:{email}/{client_id}/{secret}/{targets}', ) # Define our template tokens template_tokens = dict(NotifyBase.template_tokens, **{ 'tenant': { 'name': _('Tenant Domain'), 'type': 'string', 'required': True, 'private': True, 'regex': (r'^[a-z0-9-]+$', 'i'), }, 'email': { 'name': _('Account Email'), 'type': 'string', 'required': True, }, 'client_id': { 'name': _('Client ID'), 'type': 'string', 'required': True, 'private': True, 'regex': (r'^[a-z0-9-]+$', 'i'), }, 'secret': { 'name': _('Client Secret'), 'type': 'string', 'private': True, 'required': True, }, 'targets': { 'name': _('Target Emails'), 'type': 'list:string', }, }) # Define our template arguments template_args = dict(NotifyBase.template_args, **{ 'to': { 'alias_of': 'targets', }, 'cc': { 'name': _('Carbon Copy'), 'type': 'list:string', }, 'bcc': { 'name': _('Blind Carbon Copy'), 'type': 'list:string', }, 'oauth_id': { 'alias_of': 'client_id', }, 'oauth_secret': { 'alias_of': 'secret', }, }) def __init__(self, tenant, email, client_id, secret, targets=None, cc=None, bcc=None, **kwargs): """ Initialize Office 365 Object """ super().__init__(**kwargs) # Tenant identifier self.tenant = validate_regex( tenant, *self.template_tokens['tenant']['regex']) if not self.tenant: msg = 'An invalid Office 365 Tenant' \ '({}) was specified.'.format(tenant) self.logger.warning(msg) raise TypeError(msg) result = is_email(email) if not result: msg = 'An invalid Office 365 Email Account ID' \ '({}) was specified.'.format(email) self.logger.warning(msg) raise TypeError(msg) # Otherwise store our the email address self.email = result['full_email'] # Client Key (associated with generated OAuth2 Login) self.client_id = validate_regex( client_id, *self.template_tokens['client_id']['regex']) if not self.client_id: msg = 'An invalid Office 365 Client OAuth2 ID ' \ '({}) was specified.'.format(client_id) self.logger.warning(msg) raise TypeError(msg) # Client Secret (associated with generated OAuth2 Login) self.secret = validate_regex(secret) if not self.secret: msg = 'An invalid Office 365 Client OAuth2 Secret ' \ '({}) was specified.'.format(secret) self.logger.warning(msg) raise TypeError(msg) # For tracking our email -> name lookups self.names = {} # Acquire Carbon Copies self.cc = set() # Acquire Blind Carbon Copies self.bcc = set() # Parse our targets self.targets = list() if targets: for recipient in parse_emails(targets): # Validate recipients (to:) and drop bad ones: result = is_email(recipient) if result: # Add our email to our target list self.targets.append( (result['name'] if result['name'] else False, result['full_email'])) continue self.logger.warning( 'Dropped invalid To email ({}) specified.' .format(recipient)) else: # If our target email list is empty we want to add ourselves to it self.targets.append((False, self.email)) # Validate recipients (cc:) and drop bad ones: for recipient in parse_emails(cc): email = is_email(recipient) if email: self.cc.add(email['full_email']) # Index our name (if one exists) self.names[email['full_email']] = \ email['name'] if email['name'] else False continue self.logger.warning( 'Dropped invalid Carbon Copy email ' '({}) specified.'.format(recipient), ) # Validate recipients (bcc:) and drop bad ones: for recipient in parse_emails(bcc): email = is_email(recipient) if email: self.bcc.add(email['full_email']) # Index our name (if one exists) self.names[email['full_email']] = \ email['name'] if email['name'] else False continue self.logger.warning( 'Dropped invalid Blind Carbon Copy email ' '({}) specified.'.format(recipient), ) # Our token is acquired upon a successful login self.token = None # Presume that our token has expired 'now' self.token_expiry = datetime.now() return def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs): """ Perform Office 365 Notification """ # error tracking (used for function return) has_error = False if not self.targets: # There is no one to email; we're done self.logger.warning( 'There are no Email recipients to notify') return False # Setup our Content Type content_type = \ 'HTML' if self.notify_format == NotifyFormat.HTML else 'Text' # Prepare our payload payload = { 'Message': { 'Subject': title, 'Body': { 'ContentType': content_type, 'Content': body, }, }, 'SaveToSentItems': 'false' } # Create a copy of the email list emails = list(self.targets) # Define our URL to post to url = '{graph_url}/v1.0/users/{email}/sendmail'.format( email=self.email, graph_url=self.graph_url, ) while len(emails): # authenticate ourselves if we aren't already; but this function # also tracks if our token we have is still valid and will # re-authenticate ourselves if nessisary. if not self.authenticate(): # We could not authenticate ourselves; we're done return False # Get our email to notify to_name, to_addr = emails.pop(0) # Strip target out of cc list if in To or Bcc cc = (self.cc - self.bcc - set([to_addr])) # Strip target out of bcc list if in To bcc = (self.bcc - set([to_addr])) # Prepare our email payload['Message']['ToRecipients'] = [{ 'EmailAddress': { 'Address': to_addr } }] if to_name: # Apply our To Name payload['Message']['ToRecipients'][0]['EmailAddress']['Name'] \ = to_name self.logger.debug('Email To: {}'.format(to_addr)) if cc: # Prepare our CC list payload['Message']['CcRecipients'] = [] for addr in cc: _payload = {'Address': addr} if self.names.get(addr): _payload['Name'] = self.names[addr] # Store our address in our payload payload['Message']['CcRecipients']\ .append({'EmailAddress': _payload}) self.logger.debug('Email Cc: {}'.format(', '.join( ['{}{}'.format( '' if self.names.get(e) else '{}: '.format(self.names[e]), e) for e in cc]))) if bcc: # Prepare our CC list payload['Message']['BccRecipients'] = [] for addr in bcc: _payload = {'Address': addr} if self.names.get(addr): _payload['Name'] = self.names[addr] # Store our address in our payload payload['Message']['BccRecipients']\ .append({'EmailAddress': _payload}) self.logger.debug('Email Bcc: {}'.format(', '.join( ['{}{}'.format( '' if self.names.get(e) else '{}: '.format(self.names[e]), e) for e in bcc]))) # Perform upstream fetch postokay, response = self._fetch( url=url, payload=dumps(payload), content_type='application/json') # Test if we were okay if not postokay: has_error = True return not has_error def authenticate(self): """ Logs into and acquires us an authentication token to work with """ if self.token and self.token_expiry > datetime.now(): # If we're already authenticated and our token is still valid self.logger.debug( 'Already authenticate with token {}'.format(self.token)) return True # If we reach here, we've either expired, or we need to authenticate # for the first time. # Prepare our payload payload = { 'client_id': self.client_id, 'client_secret': self.secret, 'scope': '{graph_url}/{scope}'.format( graph_url=self.graph_url, scope=self.scope), 'grant_type': 'client_credentials', } # Prepare our URL url = self.auth_url.format(tenant=self.tenant) # A response looks like the following: # { # "token_type": "Bearer", # "expires_in": 3599, # "access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSzI1NiIsInNBXBP..." # } # # Where expires_in defines the number of seconds the key is valid for # before it must be renewed. # Alternatively, this could happen too... # { # "error": "invalid_scope", # "error_description": "AADSTS70011: Blah... Blah Blah... Blah", # "error_codes": [ # 70011 # ], # "timestamp": "2020-01-09 02:02:12Z", # "trace_id": "255d1aef-8c98-452f-ac51-23d051240864", # "correlation_id": "fb3d2015-bc17-4bb9-bb85-30c5cf1aaaa7" # } postokay, response = self._fetch(url=url, payload=payload) if not postokay: return False # Reset our token self.token = None try: # Extract our time from our response and subtrace 10 seconds from # it to give us some wiggle/grace people to re-authenticate if we # need to self.token_expiry = datetime.now() + \ timedelta(seconds=int(response.get('expires_in')) - 10) except (ValueError, AttributeError, TypeError): # ValueError: expires_in wasn't an integer # TypeError: expires_in was None # AttributeError: we could not extract anything from our response # object. return False # Go ahead and store our token if it's available self.token = response.get('access_token') # We're authenticated return True if self.token else False def _fetch(self, url, payload, content_type='application/x-www-form-urlencoded'): """ Wrapper to request object """ # Prepare our headers: headers = { 'User-Agent': self.app_id, 'Content-Type': content_type, } if self.token: # Are we authenticated? headers['Authorization'] = 'Bearer ' + self.token # Default content response object content = {} # Some Debug Logging self.logger.debug('Office 365 POST URL: {} (cert_verify={})'.format( url, self.verify_certificate)) self.logger.debug('Office 365 Payload: {}' .format(payload)) # Always call throttle before any remote server i/o is made self.throttle() # fetch function try: r = requests.post( url, data=payload, headers=headers, verify=self.verify_certificate, timeout=self.request_timeout, ) if r.status_code not in ( requests.codes.ok, requests.codes.accepted): # We had a problem status_str = \ NotifyOffice365.http_response_code_lookup(r.status_code) self.logger.warning( 'Failed to send Office 365 POST to {}: ' '{}error={}.'.format( url, ', ' if status_str else '', r.status_code)) self.logger.debug( 'Response Details:\r\n{}'.format(r.content)) # Mark our failure return (False, content) try: content = loads(r.content) except (AttributeError, TypeError, ValueError): # ValueError = r.content is Unparsable # TypeError = r.content is None # AttributeError = r is None content = {} except requests.RequestException as e: self.logger.warning( 'Exception received when sending Office 365 POST to {}: '. format(url)) self.logger.debug('Socket Exception: %s' % str(e)) # Mark our failure return (False, content) return (True, content) def url(self, privacy=False, *args, **kwargs): """ Returns the URL built dynamically based on specified arguments. """ # Our URL parameters params = self.url_parameters(privacy=privacy, *args, **kwargs) if self.cc: # Handle our Carbon Copy Addresses params['cc'] = ','.join( ['{}{}'.format( '' if not self.names.get(e) else '{}:'.format(self.names[e]), e) for e in self.cc]) if self.bcc: # Handle our Blind Carbon Copy Addresses params['bcc'] = ','.join( ['{}{}'.format( '' if not self.names.get(e) else '{}:'.format(self.names[e]), e) for e in self.bcc]) return '{schema}://{tenant}:{email}/{client_id}/{secret}' \ '/{targets}/?{params}'.format( schema=self.secure_protocol, tenant=self.pprint(self.tenant, privacy, safe=''), # email does not need to be escaped because it should # already be a valid host and username at this point email=self.email, client_id=self.pprint(self.client_id, privacy, safe=''), secret=self.pprint( self.secret, privacy, mode=PrivacyMode.Secret, safe=''), targets='/'.join( [NotifyOffice365.quote('{}{}'.format( '' if not e[0] else '{}:'.format(e[0]), e[1]), safe='') for e in self.targets]), params=NotifyOffice365.urlencode(params)) @staticmethod def parse_url(url): """ Parses the URL and returns enough arguments that can allow us to re-instantiate 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 # Now make a list of all our path entries # We need to read each entry back one at a time in reverse order # where each email found we mark as a target. Once we run out # of targets, the presume the remainder of the entries are part # of the secret key (since it can contain slashes in it) entries = NotifyOffice365.split_path(results['fullpath']) try: # Get our client_id is the first entry on the path results['client_id'] = NotifyOffice365.unquote(entries.pop(0)) except IndexError: # no problem, we may get the client_id another way through # arguments... pass # Prepare our target listing results['targets'] = list() while entries: # Pop the last entry entry = NotifyOffice365.unquote(entries.pop(-1)) if is_email(entry): # Store our email and move on results['targets'].append(entry) continue # If we reach here, the entry we just popped is part of the secret # key, so put it back entries.append(NotifyOffice365.quote(entry, safe='')) # We're done break # Initialize our tenant results['tenant'] = None # Assemble our secret key which is a combination of the host followed # by all entries in the full path that follow up until the first email results['secret'] = '/'.join( [NotifyOffice365.unquote(x) for x in entries]) # Assemble our client id from the user@hostname if results['password']: results['email'] = '{}@{}'.format( NotifyOffice365.unquote(results['password']), NotifyOffice365.unquote(results['host']), ) # Update our tenant results['tenant'] = NotifyOffice365.unquote(results['user']) else: # No tenant specified.. results['email'] = '{}@{}'.format( NotifyOffice365.unquote(results['user']), NotifyOffice365.unquote(results['host']), ) # OAuth2 ID if 'oauth_id' in results['qsd'] and len(results['qsd']['oauth_id']): # Extract the API Key from an argument results['client_id'] = \ NotifyOffice365.unquote(results['qsd']['oauth_id']) # OAuth2 Secret if 'oauth_secret' in results['qsd'] and \ len(results['qsd']['oauth_secret']): # Extract the API Secret from an argument results['secret'] = \ NotifyOffice365.unquote(results['qsd']['oauth_secret']) # Tenant if 'from' in results['qsd'] and \ len(results['qsd']['from']): # Extract the sending account's information results['email'] = \ NotifyOffice365.unquote(results['qsd']['from']) # Tenant if 'tenant' in results['qsd'] and \ len(results['qsd']['tenant']): # Extract the Tenant from the argument results['tenant'] = \ NotifyOffice365.unquote(results['qsd']['tenant']) # Support the 'to' variable so that we can support targets this way too # The 'to' makes it easier to use yaml configuration if 'to' in results['qsd'] and len(results['qsd']['to']): results['targets'] += \ NotifyOffice365.parse_list(results['qsd']['to']) # Handle Carbon Copy Addresses if 'cc' in results['qsd'] and len(results['qsd']['cc']): results['cc'] = results['qsd']['cc'] # Handle Blind Carbon Copy Addresses if 'bcc' in results['qsd'] and len(results['qsd']['bcc']): results['bcc'] = results['qsd']['bcc'] return results