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bazarr/libs/apprise/plugins/NotifySMTP2Go.py

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19 KiB

# -*- coding: utf-8 -*-
# BSD 2-Clause License
#
# Apprise - Push Notification Library.
# Copyright (c) 2023, Chris Caron <lead2gold@gmail.com>
#
# 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.
#
# 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://smtp2go.com (free accounts available)
#
# From your dashboard, you can generate an API Key if you haven't already
# at https://app.smtp2go.com/settings/apikeys/
# The API Key from here which will look something like:
# api-60F0DD0AB5BA11ABA421F23C91C88EF4
#
# Knowing this, you can buid your smtp2go url as follows:
# smtp2go://{user}@{domain}/{apikey}
# smtp2go://{user}@{domain}/{apikey}/{email}
#
# You can email as many addresses as you want as:
# smtp2go://{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.
#
import base64
import requests
from json import dumps
from email.utils import formataddr
from .NotifyBase import NotifyBase
from ..common import NotifyType
from ..common import NotifyFormat
from ..utils import parse_emails
from ..utils import parse_bool
from ..utils import is_email
from ..utils import validate_regex
from ..AppriseLocale import gettext_lazy as _
SMTP2GO_HTTP_ERROR_MAP = {
429: 'To many requests.',
}
class NotifySMTP2Go(NotifyBase):
"""
A wrapper for SMTP2Go Notifications
"""
# The default descriptive name associated with the Notification
service_name = 'SMTP2Go'
# The services URL
service_url = 'https://www.smtp2go.com/'
# All notification requests are secure
secure_protocol = 'smtp2go'
# SMTP2Go advertises they 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_smtp2go'
# Notify URL
notify_url = 'https://api.smtp2go.com/v3/email/send'
# Support attachments
attachment_support = True
# Default Notify Format
notify_format = NotifyFormat.HTML
# The maximum amount of emails that can reside within a single
# batch transfer
default_batch_size = 100
# 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',
},
'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': '+',
},
}
def __init__(self, apikey, targets, cc=None, bcc=None, from_name=None,
headers=None, batch=False, **kwargs):
"""
Initialize SMTP2Go Object
"""
super().__init__(**kwargs)
# API Key (associated with project)
self.apikey = validate_regex(apikey)
if not self.apikey:
msg = 'An invalid SMTP2Go API Key ' \
'({}) was specified.'.format(apikey)
self.logger.warning(msg)
raise TypeError(msg)
# Validate our username
if not self.user:
msg = 'No SMTP2Go 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 = {}
self.headers = {}
if headers:
# Store our extra headers
self.headers.update(headers)
# Prepare Batch Mode Flag
self.batch = batch
# 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)
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 send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
**kwargs):
"""
Perform SMTP2Go 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
# error tracking (used for function return)
has_error = False
# Send in batches if identified to do so
batch_size = 1 if not self.batch else self.default_batch_size
# Prepare our headers
headers = {
'User-Agent': self.app_id,
'Accept': 'application/json',
'Content-Type': 'application/json',
}
# Track our potential attachments
attachments = []
if attach and self.attachment_support:
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
try:
with open(attachment.path, 'rb') as f:
# Output must be in a DataURL format (that's what
# PushSafer calls it):
attachments.append({
'filename': attachment.name,
'fileblob': base64.b64encode(f.read())
.decode('utf-8'),
'mimetype': attachment.mimetype,
})
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
sender = formataddr(
(self.from_name if self.from_name else False,
self.from_addr), charset='utf-8')
# Prepare our payload
payload = {
# API Key
'api_key': self.apikey,
# Base payload options
'sender': sender,
'subject': title,
# our To array
'to': [],
}
if attachments:
payload['attachments'] = attachments
if self.notify_format == NotifyFormat.HTML:
payload['html_body'] = body
else:
payload['text_body'] = body
# Create a copy of the targets list
emails = list(self.targets)
for index in range(0, len(emails), batch_size):
# Initialize our cc list
cc = (self.cc - self.bcc)
# Initialize our bcc list
bcc = set(self.bcc)
# Initialize our to list
to = list()
for to_addr in self.targets[index:index + batch_size]:
# Strip target out of cc list if in To
cc = (cc - set([to_addr[1]]))
# Strip target out of bcc list if in To
bcc = (bcc - set([to_addr[1]]))
# Prepare our `to`
to.append(formataddr(to_addr, charset='utf-8'))
# Prepare our To
payload['to'] = to
if cc:
# Format our cc addresses to support the Name field
payload['cc'] = [formataddr(
(self.names.get(addr, False), addr), charset='utf-8')
for addr in cc]
# Format our bcc addresses to support the Name field
if bcc:
# set our bcc variable (convert to list first so it's
# JSON serializable)
payload['bcc'] = list(bcc)
# Store our header entries if defined into the payload
# in their payload
if self.headers:
payload['custom_headers'] = \
[{'header': k, 'value': v}
for k, v in self.headers.items()]
# Some Debug Logging
self.logger.debug('SMTP2Go POST URL: {} (cert_verify={})'.format(
self.notify_url, self.verify_certificate))
self.logger.debug('SMTP2Go Payload: {}' .format(payload))
# For logging output of success and errors; we get a head count
# of our outbound details:
verbose_dest = ', '.join(
[x[1] for x in self.targets[index:index + batch_size]]) \
if len(self.targets[index:index + batch_size]) <= 3 \
else '{} recipients'.format(
len(self.targets[index:index + batch_size]))
# Always call throttle before any remote server i/o is made
self.throttle()
try:
r = requests.post(
self.notify_url,
data=dumps(payload),
headers=headers,
verify=self.verify_certificate,
timeout=self.request_timeout,
)
if r.status_code != requests.codes.ok:
# We had a problem
status_str = \
NotifyBase.http_response_code_lookup(
r.status_code, SMTP2GO_HTTP_ERROR_MAP)
self.logger.warning(
'Failed to send SMTP2Go notification to {}: '
'{}{}error={}.'.format(
verbose_dest,
status_str,
', ' if status_str else '',
r.status_code))
self.logger.debug(
'Response Details:\r\n{}'.format(r.content))
# Mark our failure
has_error = True
continue
else:
self.logger.info(
'Sent SMTP2Go notification to {}.'.format(
verbose_dest))
except requests.RequestException as e:
self.logger.warning(
'A Connection error occurred sending SMTP2Go:%s ' % (
verbose_dest) + 'notification.'
)
self.logger.debug('Socket Exception: %s' % str(e))
# Mark our failure
has_error = True
continue
except (OSError, IOError) as e:
self.logger.warning(
'An I/O error occurred while reading attachments')
self.logger.debug('I/O Exception: %s' % str(e))
# Mark our failure
has_error = True
continue
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 = {
'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()})
# 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=NotifySMTP2Go.quote(self.user, safe=''),
apikey=self.pprint(self.apikey, privacy, safe=''),
targets='' if not has_targets else '/'.join(
[NotifySMTP2Go.quote('{}{}'.format(
'' if not e[0] else '{}:'.format(e[0]), e[1]),
safe='') for e in self.targets]),
params=NotifySMTP2Go.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'] = NotifySMTP2Go.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'] = \
NotifySMTP2Go.unquote(results['qsd']['name'])
# 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()}
# Get Batch Mode Flag
results['batch'] = \
parse_bool(results['qsd'].get(
'batch', NotifySMTP2Go.template_args['batch']['default']))
return results