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bazarr/libs/apprise/plugins/NotifySendGrid.py

469 lines
16 KiB

# -*- coding: utf-8 -*-
#
# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
# 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.
#
# You will need an API Key for this plugin to work.
# From the Settings -> API Keys you can click "Create API Key" if you don't
# have one already. The key must have at least the "Mail Send" permission
# to work.
#
# The schema to use the plugin looks like this:
# {schema}://{apikey}:{from_email}
#
# Your {from_email} must be comprissed of your Sendgrid Authenticated
# Domain. The same domain must have 'Link Branding' turned on as well or it
# will not work. This can be seen from Settings -> Sender Authentication.
# If you're (SendGrid) verified domain is example.com, then your schema may
# look something like this:
# Simple API Reference:
# - https://sendgrid.com/docs/API_Reference/Web_API_v3/index.html
# - https://sendgrid.com/docs/ui/sending-email/\
# how-to-send-an-email-with-dynamic-transactional-templates/
import requests
from json import dumps
from .NotifyBase import NotifyBase
from ..common import NotifyFormat
from ..common import NotifyType
from ..utils import parse_list
from ..utils import GET_EMAIL_RE
from ..utils import validate_regex
from ..AppriseLocale import gettext_lazy as _
# Extend HTTP Error Messages
SENDGRID_HTTP_ERROR_MAP = {
401: 'Unauthorized - You do not have authorization to make the request.',
413: 'Payload To Large - The JSON payload you have included in your '
'request is too large.',
429: 'Too Many Requests - The number of requests you have made exceeds '
'SendGrids rate limitations.',
}
class NotifySendGrid(NotifyBase):
"""
A wrapper for Notify SendGrid Notifications
"""
# The default descriptive name associated with the Notification
service_name = 'SendGrid'
# The services URL
service_url = 'https://sendgrid.com'
# The default secure protocol
secure_protocol = 'sendgrid'
# A URL that takes you to the setup/help of the specific protocol
setup_url = 'https://github.com/caronc/apprise/wiki/Notify_sendgrid'
# Default to markdown
notify_format = NotifyFormat.HTML
# The default Email API URL to use
notify_url = 'https://api.sendgrid.com/v3/mail/send'
# Allow 300 requests per minute.
# 60/300 = 0.2
request_rate_per_sec = 0.2
# The default subject to use if one isn't specified.
default_empty_subject = '<no subject>'
# Define object templates
templates = (
'{schema}://{apikey}:{from_email}',
'{schema}://{apikey}:{from_email}/{targets}',
)
# Define our template arguments
template_tokens = dict(NotifyBase.template_tokens, **{
'apikey': {
'name': _('API Key'),
'type': 'string',
'private': True,
'required': True,
'regex': (r'^[A-Z0-9._-]+$', 'i'),
},
'from_email': {
'name': _('Source Email'),
'type': 'string',
'required': True,
},
'target_email': {
'name': _('Target Email'),
'type': 'string',
'map_to': 'targets',
},
'targets': {
'name': _('Targets'),
'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',
},
'template': {
# Template ID
# The template ID is 64 characters with one dash (d-uuid)
'name': _('Template'),
'type': 'string',
},
})
# Support Template Dynamic Variables (Substitutions)
template_kwargs = {
'template_data': {
'name': _('Template Data'),
'prefix': '+',
},
}
def __init__(self, apikey, from_email, targets=None, cc=None,
bcc=None, template=None, template_data=None, **kwargs):
"""
Initialize Notify SendGrid Object
"""
super(NotifySendGrid, self).__init__(**kwargs)
# API Key (associated with project)
self.apikey = validate_regex(
apikey, *self.template_tokens['apikey']['regex'])
if not self.apikey:
msg = 'An invalid SendGrid API Key ' \
'({}) was specified.'.format(apikey)
self.logger.warning(msg)
raise TypeError(msg)
self.from_email = from_email
try:
result = GET_EMAIL_RE.match(self.from_email)
if not result:
# let outer exception handle this
raise TypeError
except (TypeError, AttributeError):
msg = 'Invalid ~From~ email specified: {}'.format(self.from_email)
self.logger.warning(msg)
raise TypeError(msg)
# Acquire Targets (To Emails)
self.targets = list()
# Acquire Carbon Copies
self.cc = set()
# Acquire Blind Carbon Copies
self.bcc = set()
# Now our dynamic template (if defined)
self.template = template
# Now our dynamic template data (if defined)
self.template_data = template_data \
if isinstance(template_data, dict) else {}
# Validate recipients (to:) and drop bad ones:
for recipient in parse_list(targets):
if GET_EMAIL_RE.match(recipient):
self.targets.append(recipient)
continue
self.logger.warning(
'Dropped invalid email '
'({}) specified.'.format(recipient),
)
# Validate recipients (cc:) and drop bad ones:
for recipient in parse_list(cc):
if GET_EMAIL_RE.match(recipient):
self.cc.add(recipient)
continue
self.logger.warning(
'Dropped invalid Carbon Copy email '
'({}) specified.'.format(recipient),
)
# Validate recipients (bcc:) and drop bad ones:
for recipient in parse_list(bcc):
if GET_EMAIL_RE.match(recipient):
self.bcc.add(recipient)
continue
self.logger.warning(
'Dropped invalid Blind Carbon Copy email '
'({}) specified.'.format(recipient),
)
if len(self.targets) == 0:
# Notify ourselves
self.targets.append(self.from_email)
return
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,
'verify': 'yes' if self.verify_certificate else 'no',
}
if len(self.cc) > 0:
# Handle our Carbon Copy Addresses
args['cc'] = ','.join(self.cc)
if len(self.bcc) > 0:
# Handle our Blind Carbon Copy Addresses
args['bcc'] = ','.join(self.bcc)
if self.template:
# Handle our Template ID if if was specified
args['template'] = self.template
# Append our template_data into our args
args.update({'+{}'.format(k): v
for k, v in self.template_data.items()})
# 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] == self.from_email)
return '{schema}://{apikey}:{from_email}/{targets}?{args}'.format(
schema=self.secure_protocol,
apikey=self.pprint(self.apikey, privacy, safe=''),
from_email=self.quote(self.from_email, safe='@'),
targets='' if not has_targets else '/'.join(
[NotifySendGrid.quote(x, safe='') for x in self.targets]),
args=NotifySendGrid.urlencode(args),
)
def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
"""
Perform SendGrid Notification
"""
headers = {
'User-Agent': self.app_id,
'Content-Type': 'application/json',
'Authorization': 'Bearer {}'.format(self.apikey),
}
# error tracking (used for function return)
has_error = False
# A Simple Email Payload Template
_payload = {
'personalizations': [{
# Placeholder
'to': [{'email': None}],
}],
'from': {
'email': self.from_email,
},
# A subject is a requirement, so if none is specified we must
# set a default with at least 1 character or SendGrid will deny
# our request
'subject': title if title else self.default_empty_subject,
'content': [{
'type': 'text/plain'
if self.notify_format == NotifyFormat.TEXT else 'text/html',
'value': body,
}],
}
if self.template:
_payload['template_id'] = self.template
if self.template_data:
_payload['personalizations'][0]['dynamic_template_data'] = \
{k: v for k, v in self.template_data.items()}
targets = list(self.targets)
while len(targets) > 0:
target = targets.pop(0)
# Create a copy of our template
payload = _payload.copy()
# the cc, bcc, to field must be unique or SendMail will fail, the
# below code prepares this by ensuring the target isn't in the cc
# list or bcc list. It also makes sure the cc list does not contain
# any of the bcc entries
cc = (self.cc - self.bcc - set([target]))
bcc = (self.bcc - set([target]))
# Set our target
payload['personalizations'][0]['to'][0]['email'] = target
if len(cc):
payload['personalizations'][0]['cc'] = \
[{'email': email} for email in cc]
if len(bcc):
payload['personalizations'][0]['bcc'] = \
[{'email': email} for email in bcc]
self.logger.debug('SendGrid POST URL: %s (cert_verify=%r)' % (
self.notify_url, self.verify_certificate,
))
self.logger.debug('SendGrid Payload: %s' % str(payload))
# 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,
)
if r.status_code not in (
requests.codes.ok, requests.codes.accepted):
# We had a problem
status_str = \
NotifySendGrid.http_response_code_lookup(
r.status_code, SENDGRID_HTTP_ERROR_MAP)
self.logger.warning(
'Failed to send SendGrid notification to {}: '
'{}{}error={}.'.format(
target,
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 SendGrid notification to {}.'.format(target))
except requests.RequestException as e:
self.logger.warning(
'A Connection error occured sending SendGrid '
'notification to {}.'.format(target))
self.logger.debug('Socket Exception: %s' % str(e))
# Mark our failure
has_error = True
continue
return not has_error
@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)
if not results:
# We're done early as we couldn't load the results
return results
# Our URL looks like this:
# {schema}://{apikey}:{from_email}/{targets}
#
# which actually equates to:
# {schema}://{user}:{password}@{host}/{email1}/{email2}/etc..
# ^ ^ ^
# | | |
# apikey -from addr-
if not results.get('user'):
# An API Key as not properly specified
return None
if not results.get('password'):
# A From Email was not correctly specified
return None
# Prepare our API Key
results['apikey'] = NotifySendGrid.unquote(results['user'])
# Prepare our From Email Address
results['from_email'] = '{}@{}'.format(
NotifySendGrid.unquote(results['password']),
NotifySendGrid.unquote(results['host']),
)
# Acquire our targets
results['targets'] = NotifySendGrid.split_path(results['fullpath'])
# The 'to' makes it easier to use yaml configuration
if 'to' in results['qsd'] and len(results['qsd']['to']):
results['targets'] += \
NotifySendGrid.parse_list(results['qsd']['to'])
# Handle Carbon Copy Addresses
if 'cc' in results['qsd'] and len(results['qsd']['cc']):
results['cc'] = \
NotifySendGrid.parse_list(results['qsd']['cc'])
# Handle Blind Carbon Copy Addresses
if 'bcc' in results['qsd'] and len(results['qsd']['bcc']):
results['bcc'] = \
NotifySendGrid.parse_list(results['qsd']['bcc'])
# Handle Blind Carbon Copy Addresses
if 'template' in results['qsd'] and len(results['qsd']['template']):
results['template'] = \
NotifySendGrid.unquote(results['qsd']['template'])
# Add any template substitutions
results['template_data'] = results['qsd+']
return results