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+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2020 Chris Caron <[email protected]>
+# 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.
+
+# 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',
+}
+
+
+# Priorities
+class SparkPostRegion(object):
+ 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
+
+ # The default region to use if one isn't otherwise specified
+ sparkpost_default_region = SparkPostRegion.US
+
+ # 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(NotifySparkPost, self).__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.sparkpost_default_region \
+ 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
+
+ try:
+ reply_to = formataddr((self.from_name if self.from_name else False,
+ self.from_addr), charset='utf-8')
+ except TypeError:
+ # Python v2.x Support (no charset keyword)
+ # Format our cc addresses to support the Name field
+ reply_to = formataddr((self.from_name if self.from_name else False,
+ self.from_addr))
+ 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))
+
+ @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 from name to associate with from address
+ 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
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 15:16:20 +0000