# -*- 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. # Signup @ https://www.sparkpost.com # # Ensure you've added a Senders Domain and have generated yourself an # API Key at: # https://app.sparkpost.com/dashboard # Note: For SMTP Access, your API key must have at least been granted the # 'Send via SMTP' privileges. # From here you can click on the domain you're interested in. You can acquire # the API Key from here which will look something like: # 1e1d479fcf1a87527e9411e083c700689fa1acdc # # Knowing this, you can buid your sparkpost url as follows: # sparkpost://{user}@{domain}/{apikey} # sparkpost://{user}@{domain}/{apikey}/{email} # # You can email as many addresses as you want as: # sparkpost://{user}@{domain}/{apikey}/{email1}/{email2}/{emailN} # # The {user}@{domain} effectively assembles the 'from' email address # the email will be transmitted from. If no email address is specified # then it will also become the 'to' address as well. # # The {domain} must cross reference a domain you've set up with Spark Post # # API Documentation: https://developers.sparkpost.com/api/ # Specifically: https://developers.sparkpost.com/api/transmissions/ import requests import base64 from json import loads from json import dumps from .NotifyBase import NotifyBase from ..common import NotifyType from ..common import NotifyFormat from ..utils import is_email from email.utils import formataddr from ..utils import validate_regex from ..utils import parse_emails from ..utils import parse_bool from ..AppriseLocale import gettext_lazy as _ # Provide some known codes SparkPost uses and what they translate to: # Based on https://www.sparkpost.com/docs/tech-resources/extended-error-codes/ SPARKPOST_HTTP_ERROR_MAP = { 400: 'A bad request was made to the server', 401: 'Invalid User ID and/or Unauthorized User', 403: 'Permission Denied; the provided API Key was not valid', 404: 'There is a problem with the server query URI.', 405: 'Invalid HTTP method', 420: 'Sending limit reached.', 422: 'Invalid data/format/type/length', 429: 'To many requests per sec; rate limit', } class SparkPostRegion: """ Regions """ US = 'us' EU = 'eu' # SparkPost APIs SPARKPOST_API_LOOKUP = { SparkPostRegion.US: 'https://api.sparkpost.com/api/v1', SparkPostRegion.EU: 'https://api.eu.sparkpost.com/api/v1', } # A List of our regions we can use for verification SPARKPOST_REGIONS = ( SparkPostRegion.US, SparkPostRegion.EU, ) class NotifySparkPost(NotifyBase): """ A wrapper for SparkPost Notifications """ # The default descriptive name associated with the Notification service_name = 'SparkPost' # The services URL service_url = 'https://sparkpost.com/' # All notification requests are secure secure_protocol = 'sparkpost' # SparkPost advertises they allow 300 requests per minute. # 60/300 = 0.2 request_rate_per_sec = 0.20 # Words straight from their website: # https://developers.sparkpost.com/api/#header-rate-limiting # These limits are dynamic, but as a general rule, wait 1 to 5 seconds # after receiving a 429 response before requesting again. # As a simple work around, this is what we will do... Wait X seconds # (defined below) before trying again when we get a 429 error sparkpost_retry_wait_sec = 5 # The maximum number of times we'll retry to send our message when we've # reached a throttling situatin before giving up sparkpost_retry_attempts = 3 # The maximum amount of emails that can reside within a single # batch transfer based on: # https://www.sparkpost.com/docs/tech-resources/\ # smtp-rest-api-performance/#sending-via-the-transmission-rest-api default_batch_size = 2000 # A URL that takes you to the setup/help of the specific protocol setup_url = 'https://github.com/caronc/apprise/wiki/Notify_sparkpost' # Default Notify Format notify_format = NotifyFormat.HTML # Define object templates templates = ( '{schema}://{user}@{host}:{apikey}/', '{schema}://{user}@{host}:{apikey}/{targets}', ) # Define our template tokens template_tokens = dict(NotifyBase.template_tokens, **{ 'user': { 'name': _('User Name'), 'type': 'string', 'required': True, }, 'host': { 'name': _('Domain'), 'type': 'string', 'required': True, }, 'apikey': { 'name': _('API Key'), 'type': 'string', 'private': True, 'required': True, }, 'targets': { 'name': _('Target Emails'), 'type': 'list:string', }, }) # Define our template arguments template_args = dict(NotifyBase.template_args, **{ 'name': { 'name': _('From Name'), 'type': 'string', 'map_to': 'from_name', }, 'region': { 'name': _('Region Name'), 'type': 'choice:string', 'values': SPARKPOST_REGIONS, 'default': SparkPostRegion.US, 'map_to': 'region_name', }, 'to': { 'alias_of': 'targets', }, 'cc': { 'name': _('Carbon Copy'), 'type': 'list:string', }, 'bcc': { 'name': _('Blind Carbon Copy'), 'type': 'list:string', }, 'batch': { 'name': _('Batch Mode'), 'type': 'bool', 'default': False, }, }) # Define any kwargs we're using template_kwargs = { 'headers': { 'name': _('Email Header'), 'prefix': '+', }, 'tokens': { 'name': _('Template Tokens'), 'prefix': ':', }, } def __init__(self, apikey, targets, cc=None, bcc=None, from_name=None, region_name=None, headers=None, tokens=None, batch=False, **kwargs): """ Initialize SparkPost Object """ super().__init__(**kwargs) # API Key (associated with project) self.apikey = validate_regex(apikey) if not self.apikey: msg = 'An invalid SparkPost API Key ' \ '({}) was specified.'.format(apikey) self.logger.warning(msg) raise TypeError(msg) # Validate our username if not self.user: msg = 'No SparkPost username was specified.' self.logger.warning(msg) raise TypeError(msg) # Acquire Email 'To' self.targets = list() # Acquire Carbon Copies self.cc = set() # Acquire Blind Carbon Copies self.bcc = set() # For tracking our email -> name lookups self.names = {} # Store our region try: self.region_name = self.template_args['region']['default'] \ if region_name is None else region_name.lower() if self.region_name not in SPARKPOST_REGIONS: # allow the outer except to handle this common response raise except: # Invalid region specified msg = 'The SparkPost region specified ({}) is invalid.' \ .format(region_name) self.logger.warning(msg) raise TypeError(msg) # Get our From username (if specified) self.from_name = from_name # Get our from email address self.from_addr = '{user}@{host}'.format(user=self.user, host=self.host) if not is_email(self.from_addr): # Parse Source domain based on from_addr msg = 'Invalid ~From~ email format: {}'.format(self.from_addr) self.logger.warning(msg) raise TypeError(msg) self.headers = {} if headers: # Store our extra headers self.headers.update(headers) self.tokens = {} if tokens: # Store our template tokens self.tokens.update(tokens) # Prepare Batch Mode Flag self.batch = batch if targets: # Validate recipients (to:) and drop bad ones: for recipient in parse_emails(targets): result = is_email(recipient) if result: 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( (self.from_name if self.from_name else False, self.from_addr)) # 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), ) def __post(self, payload, retry): """ Performs the actual post and returns the response """ # Prepare our headers headers = { 'User-Agent': self.app_id, 'Accept': 'application/json', 'Content-Type': 'application/json', 'Authorization': self.apikey, } # Prepare our URL as it's based on our hostname url = '{}/transmissions/'.format( SPARKPOST_API_LOOKUP[self.region_name]) # Some Debug Logging self.logger.debug('SparkPost POST URL: {} (cert_verify={})'.format( url, self.verify_certificate)) if 'attachments' in payload['content']: # Since we print our payload; attachments make it a bit too noisy # we just strip out the data block to accomodate it log_payload = \ {k: v for k, v in payload.items() if k != "content"} log_payload['content'] = \ {k: v for k, v in payload['content'].items() if k != "attachments"} log_payload['content']['attachments'] = \ [{k: v for k, v in x.items() if k != "data"} for x in payload['content']['attachments']] else: # No tidying is needed log_payload = payload self.logger.debug('SparkPost Payload: {}' .format(log_payload)) wait = None # For logging output of success and errors; we get a head count # of our outbound details: verbose_dest = ', '.join( [x['address']['email'] for x in payload['recipients']]) \ if len(payload['recipients']) <= 3 \ else '{} recipients'.format(len(payload['recipients'])) # Initialize our response object json_response = {} # Set ourselves a status code status_code = -1 while 1: # pragma: no branch # Always call throttle before any remote server i/o is made self.throttle(wait=wait) try: r = requests.post( url, data=dumps(payload), headers=headers, verify=self.verify_certificate, timeout=self.request_timeout, ) # A Good response (200) looks like this: # "results": { # "total_rejected_recipients": 0, # "total_accepted_recipients": 1, # "id": "11668787484950529" # } # } # # A Bad response looks like this: # { # "errors": [ # { # "description": # "Unconfigured or unverified sending domain.", # "code": "7001", # "message": "Invalid domain" # } # ] # } # try: # Update our status response if we can json_response = loads(r.content) except (AttributeError, TypeError, ValueError): # ValueError = r.content is Unparsable # TypeError = r.content is None # AttributeError = r is None # We could not parse JSON response. # We will just use the status we already have. pass status_code = r.status_code payload['recipients'] = list() if status_code == requests.codes.ok: self.logger.info( 'Sent SparkPost notification to {}.'.format( verbose_dest)) return status_code, json_response # We had a problem if we get here status_str = \ NotifyBase.http_response_code_lookup( status_code, SPARKPOST_API_LOOKUP) self.logger.warning( 'Failed to send SparkPost notification to {}: ' '{}{}error={}.'.format( verbose_dest, status_str, ', ' if status_str else '', status_code)) self.logger.debug( 'Response Details:\r\n{}'.format(r.content)) if status_code == requests.codes.too_many_requests and retry: retry = retry - 1 if retry > 0: wait = self.sparkpost_retry_wait_sec continue except requests.RequestException as e: self.logger.warning( 'A Connection error occurred sending SparkPost ' 'notification') self.logger.debug('Socket Exception: %s' % str(e)) # Anything else and we're done return status_code, json_response # Our code will never reach here (outside of infinite while loop above) def send(self, body, title='', notify_type=NotifyType.INFO, attach=None, **kwargs): """ Perform SparkPost Notification """ 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 # Initialize our has_error flag has_error = False # Send in batches if identified to do so batch_size = 1 if not self.batch else self.default_batch_size reply_to = formataddr((self.from_name if self.from_name else False, self.from_addr), charset='utf-8') payload = { "options": { # When set to True, an image is included with the email which # is used to detect if the user looked at the image or not. 'open_tracking': False, # Track if links were clicked that were found within email 'click_tracking': False, }, "content": { "from": { "name": self.from_name if self.from_name else self.app_desc, "email": self.from_addr, }, # SparkPost does not allow empty subject lines or lines that # only contain whitespace; Since Apprise allows an empty title # parameter we swap empty title entries with the period "subject": title if title.strip() else '.', "reply_to": reply_to, } } if self.notify_format == NotifyFormat.HTML: payload['content']['html'] = body else: payload['content']['text'] = body if attach: # Prepare ourselves an attachment object payload['content']['attachments'] = [] 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( 'Preparing SparkPost attachment {}'.format( attachment.url(privacy=True))) try: with open(attachment.path, 'rb') as fp: # Prepare API Upload Payload payload['content']['attachments'].append({ 'name': attachment.name, 'type': attachment.mimetype, 'data': base64.b64encode(fp.read()).decode("ascii") }) except (OSError, IOError) as e: self.logger.warning( 'An I/O error occurred while reading {}.'.format( attachment.name if attachment else 'attachment')) self.logger.debug('I/O Exception: %s' % str(e)) return False # Take a copy of our token dictionary tokens = self.tokens.copy() # Apply some defaults template values tokens['app_body'] = body tokens['app_title'] = title tokens['app_type'] = notify_type tokens['app_id'] = self.app_id tokens['app_desc'] = self.app_desc tokens['app_color'] = self.color(notify_type) tokens['app_url'] = self.app_url # Store our tokens if they're identified payload['substitution_data'] = self.tokens # Create a copy of the targets list emails = list(self.targets) for index in range(0, len(emails), batch_size): # Generate our email listing payload['recipients'] = list() # Initialize our cc list cc = (self.cc - self.bcc) # Initialize our bcc list bcc = set(self.bcc) # Initialize our headers headers = self.headers.copy() for addr in self.targets[index:index + batch_size]: entry = { 'address': { 'email': addr[1], } } # Strip target out of cc list if in To cc = (cc - set([addr[1]])) # Strip target out of bcc list if in To bcc = (bcc - set([addr[1]])) if addr[0]: entry['address']['name'] = addr[0] # Add our recipient to our list payload['recipients'].append(entry) if cc: # Handle our cc List for addr in cc: entry = { 'address': { 'email': addr, 'header_to': # Take the first email in the To self.targets[index:index + batch_size][0][1], }, } if self.names.get(addr): entry['address']['name'] = self.names[addr] # Add our recipient to our list payload['recipients'].append(entry) headers['CC'] = ','.join(cc) # Handle our bcc for addr in bcc: # Add our recipient to our list payload['recipients'].append({ 'address': { 'email': addr, 'header_to': # Take the first email in the To self.targets[index:index + batch_size][0][1], }, }) if headers: payload['content']['headers'] = headers # Send our message status_code, response = \ self.__post(payload, self.sparkpost_retry_attempts) # Failed if status_code != requests.codes.ok: has_error = True return not has_error def url(self, privacy=False, *args, **kwargs): """ Returns the URL built dynamically based on specified arguments. """ # Define any URL parameters params = { 'region': self.region_name, 'batch': 'yes' if self.batch else 'no', } # Append our headers into our parameters params.update({'+{}'.format(k): v for k, v in self.headers.items()}) # Append our template tokens into our parameters params.update({':{}'.format(k): v for k, v in self.tokens.items()}) # Extend our parameters params.update(self.url_parameters(privacy=privacy, *args, **kwargs)) if self.from_name is not None: # from_name specified; pass it back on the url params['name'] = self.from_name if self.cc: # Handle our Carbon Copy Addresses params['cc'] = ','.join( ['{}{}'.format( '' if not e not in self.names else '{}:'.format(self.names[e]), e) for e in self.cc]) if self.bcc: # Handle our Blind Carbon Copy Addresses params['bcc'] = ','.join(self.bcc) # a simple boolean check as to whether we display our target emails # or not has_targets = \ not (len(self.targets) == 1 and self.targets[0][1] == self.from_addr) return '{schema}://{user}@{host}/{apikey}/{targets}/?{params}'.format( schema=self.secure_protocol, host=self.host, user=NotifySparkPost.quote(self.user, safe=''), apikey=self.pprint(self.apikey, privacy, safe=''), targets='' if not has_targets else '/'.join( [NotifySparkPost.quote('{}{}'.format( '' if not e[0] else '{}:'.format(e[0]), e[1]), safe='') for e in self.targets]), params=NotifySparkPost.urlencode(params)) def __len__(self): """ Returns the number of targets associated with this notification """ # # Factor batch into calculation # batch_size = 1 if not self.batch else self.default_batch_size targets = len(self.targets) if batch_size > 1: targets = int(targets / batch_size) + \ (1 if targets % batch_size else 0) return targets if targets > 0 else 1 @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 # Get our entries; split_path() looks after unquoting content for us # by default results['targets'] = NotifySparkPost.split_path(results['fullpath']) # Our very first entry is reserved for our api key try: results['apikey'] = results['targets'].pop(0) except IndexError: # We're done - no API Key found results['apikey'] = None if 'name' in results['qsd'] and len(results['qsd']['name']): # Extract from name to associate with from address results['from_name'] = \ NotifySparkPost.unquote(results['qsd']['name']) if 'region' in results['qsd'] and len(results['qsd']['region']): # Extract region results['region_name'] = \ NotifySparkPost.unquote(results['qsd']['region']) # Handle 'to' email address if 'to' in results['qsd'] and len(results['qsd']['to']): results['targets'].append(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'] # Add our Meta Headers that the user can provide with their outbound # emails results['headers'] = {NotifyBase.unquote(x): NotifyBase.unquote(y) for x, y in results['qsd+'].items()} # Add our template tokens (if defined) results['tokens'] = {NotifyBase.unquote(x): NotifyBase.unquote(y) for x, y in results['qsd:'].items()} # Get Batch Mode Flag results['batch'] = \ parse_bool(results['qsd'].get( 'batch', NotifySparkPost.template_args['batch']['default'])) return results