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724 lines
25 KiB
724 lines
25 KiB
# -*- coding: utf-8 -*-
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# BSD 2-Clause License
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#
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# Apprise - Push Notification Library.
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# Copyright (c) 2024, Chris Caron <lead2gold@gmail.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# Signup @ https://www.mailgun.com/
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#
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# Each domain will have an API key associated with it. If you sign up you'll
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# get a sandbox domain to use. Or if you set up your own, they'll have
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# api keys associated with them too. Find your API key out by visiting
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# https://app.mailgun.com/app/domains
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#
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# From here you can click on the domain you're interested in. You can acquire
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# the API Key from here which will look something like:
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# 4b4f2918c6c21ba0a26ad2af73c07f4d-dk5f51da-8f91a0df
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#
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# You'll also need to know the domain that is associated with your API key.
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# This will be obvious with a paid account because it will be the domain name
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# you've registered with them. But if you're using a test account, it will
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# be name of the sandbox you've set up such as:
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# sandbox74bda3414c06kb5acb946.mailgun.org
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#
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# Knowing this, you can buid your mailgun url as follows:
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# mailgun://{user}@{domain}/{apikey}
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# mailgun://{user}@{domain}/{apikey}/{email}
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#
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# You can email as many addresses as you want as:
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# mailgun://{user}@{domain}/{apikey}/{email1}/{email2}/{emailN}
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#
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# The {user}@{domain} effectively assembles the 'from' email address
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# the email will be transmitted from. If no email address is specified
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# then it will also become the 'to' address as well.
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#
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import requests
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from email.utils import formataddr
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from .NotifyBase import NotifyBase
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from ..common import NotifyType
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from ..common import NotifyFormat
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from ..utils import parse_emails
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from ..utils import parse_bool
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from ..utils import is_email
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from ..utils import validate_regex
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from ..logger import logger
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from ..AppriseLocale import gettext_lazy as _
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# Provide some known codes Mailgun uses and what they translate to:
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# Based on https://documentation.mailgun.com/en/latest/api-intro.html#errors
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MAILGUN_HTTP_ERROR_MAP = {
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400: 'A bad request was made to the server.',
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401: 'The provided API Key was not valid.',
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402: 'The request failed for a reason out of your control.',
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404: 'The requested API query is not valid.',
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413: 'Provided attachment is to big.',
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}
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# Priorities
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class MailgunRegion:
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US = 'us'
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EU = 'eu'
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# Mailgun APIs
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MAILGUN_API_LOOKUP = {
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MailgunRegion.US: 'https://api.mailgun.net/v3/',
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MailgunRegion.EU: 'https://api.eu.mailgun.net/v3/',
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}
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# A List of our regions we can use for verification
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MAILGUN_REGIONS = (
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MailgunRegion.US,
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MailgunRegion.EU,
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)
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class NotifyMailgun(NotifyBase):
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"""
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A wrapper for Mailgun Notifications
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"""
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# The default descriptive name associated with the Notification
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service_name = 'Mailgun'
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# The services URL
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service_url = 'https://www.mailgun.com/'
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# All notification requests are secure
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secure_protocol = 'mailgun'
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# Mailgun advertises they allow 300 requests per minute.
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# 60/300 = 0.2
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request_rate_per_sec = 0.20
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# A URL that takes you to the setup/help of the specific protocol
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setup_url = 'https://github.com/caronc/apprise/wiki/Notify_mailgun'
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# Support attachments
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attachment_support = True
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# Default Notify Format
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notify_format = NotifyFormat.HTML
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# The maximum amount of emails that can reside within a single
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# batch transfer
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default_batch_size = 2000
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# Define object templates
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templates = (
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'{schema}://{user}@{host}:{apikey}/',
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'{schema}://{user}@{host}:{apikey}/{targets}',
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)
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# Define our template tokens
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template_tokens = dict(NotifyBase.template_tokens, **{
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'user': {
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'name': _('User Name'),
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'type': 'string',
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'required': True,
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},
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'host': {
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'name': _('Domain'),
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'type': 'string',
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'required': True,
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},
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'apikey': {
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'name': _('API Key'),
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'type': 'string',
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'private': True,
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'required': True,
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},
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'target_email': {
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'name': _('Target Email'),
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'type': 'string',
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'map_to': 'targets',
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},
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'targets': {
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'name': _('Targets'),
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'type': 'list:string',
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},
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})
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# Define our template arguments
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template_args = dict(NotifyBase.template_args, **{
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'name': {
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'name': _('From Name'),
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'type': 'string',
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'map_to': 'from_addr',
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},
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'from': {
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'alias_of': 'name',
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},
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'region': {
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'name': _('Region Name'),
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'type': 'choice:string',
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'values': MAILGUN_REGIONS,
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'default': MailgunRegion.US,
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'map_to': 'region_name',
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},
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'to': {
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'alias_of': 'targets',
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},
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'cc': {
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'name': _('Carbon Copy'),
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'type': 'list:string',
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},
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'bcc': {
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'name': _('Blind Carbon Copy'),
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'type': 'list:string',
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},
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'batch': {
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'name': _('Batch Mode'),
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'type': 'bool',
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'default': False,
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},
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})
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# Define any kwargs we're using
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template_kwargs = {
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'headers': {
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'name': _('Email Header'),
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'prefix': '+',
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},
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'tokens': {
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'name': _('Template Tokens'),
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'prefix': ':',
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},
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}
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def __init__(self, apikey, targets, cc=None, bcc=None, from_addr=None,
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region_name=None, headers=None, tokens=None, batch=False,
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**kwargs):
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"""
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Initialize Mailgun Object
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"""
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super().__init__(**kwargs)
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# API Key (associated with project)
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self.apikey = validate_regex(apikey)
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if not self.apikey:
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msg = 'An invalid Mailgun API Key ' \
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'({}) was specified.'.format(apikey)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Validate our username
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if not self.user:
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msg = 'No Mailgun username was specified.'
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self.logger.warning(msg)
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raise TypeError(msg)
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# Acquire Email 'To'
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self.targets = list()
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# Acquire Carbon Copies
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self.cc = set()
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# Acquire Blind Carbon Copies
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self.bcc = set()
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# For tracking our email -> name lookups
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self.names = {}
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self.headers = {}
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if headers:
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# Store our extra headers
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self.headers.update(headers)
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self.tokens = {}
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if tokens:
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# Store our template tokens
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self.tokens.update(tokens)
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# Prepare Batch Mode Flag
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self.batch = batch
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# Store our region
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try:
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self.region_name = \
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NotifyMailgun.template_args['region']['default'] \
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if region_name is None else region_name.lower()
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if self.region_name not in MAILGUN_REGIONS:
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# allow the outer except to handle this common response
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raise
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except:
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# Invalid region specified
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msg = 'The Mailgun region specified ({}) is invalid.' \
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.format(region_name)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Get our From username (if specified)
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self.from_addr = [
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self.app_id, '{user}@{host}'.format(
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user=self.user, host=self.host)]
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if from_addr:
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result = is_email(from_addr)
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if result:
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self.from_addr = (
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result['name'] if result['name'] else False,
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result['full_email'])
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else:
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self.from_addr[0] = from_addr
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if not is_email(self.from_addr[1]):
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# Parse Source domain based on from_addr
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msg = 'Invalid ~From~ email format: {}'.format(self.from_addr)
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self.logger.warning(msg)
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raise TypeError(msg)
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if targets:
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# Validate recipients (to:) and drop bad ones:
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for recipient in parse_emails(targets):
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result = is_email(recipient)
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if result:
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self.targets.append(
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(result['name'] if result['name'] else False,
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result['full_email']))
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continue
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self.logger.warning(
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'Dropped invalid To email '
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'({}) specified.'.format(recipient),
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)
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else:
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# If our target email list is empty we want to add ourselves to it
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self.targets.append((False, self.from_addr[1]))
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# Validate recipients (cc:) and drop bad ones:
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for recipient in parse_emails(cc):
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email = is_email(recipient)
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if email:
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self.cc.add(email['full_email'])
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# Index our name (if one exists)
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self.names[email['full_email']] = \
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email['name'] if email['name'] else False
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continue
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self.logger.warning(
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'Dropped invalid Carbon Copy email '
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'({}) specified.'.format(recipient),
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)
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# Validate recipients (bcc:) and drop bad ones:
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for recipient in parse_emails(bcc):
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email = is_email(recipient)
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if email:
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self.bcc.add(email['full_email'])
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# Index our name (if one exists)
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self.names[email['full_email']] = \
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email['name'] if email['name'] else False
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continue
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self.logger.warning(
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'Dropped invalid Blind Carbon Copy email '
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'({}) specified.'.format(recipient),
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)
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def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
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**kwargs):
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"""
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Perform Mailgun Notification
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"""
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if not self.targets:
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# There is no one to email; we're done
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self.logger.warning(
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'There are no Email recipients to notify')
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return False
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# error tracking (used for function return)
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has_error = False
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# Send in batches if identified to do so
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batch_size = 1 if not self.batch else self.default_batch_size
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# Prepare our headers
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headers = {
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'User-Agent': self.app_id,
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'Accept': 'application/json',
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}
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# Track our potential files
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files = {}
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if attach and self.attachment_support:
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for idx, attachment in enumerate(attach):
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# Perform some simple error checking
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if not attachment:
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# We could not access the attachment
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self.logger.error(
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'Could not access attachment {}.'.format(
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attachment.url(privacy=True)))
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return False
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self.logger.debug(
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'Preparing Mailgun attachment {}'.format(
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attachment.url(privacy=True)))
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try:
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files['attachment[{}]'.format(idx)] = \
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(attachment.name, open(attachment.path, 'rb'))
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except (OSError, IOError) as e:
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self.logger.warning(
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'An I/O error occurred while opening {}.'.format(
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attachment.name if attachment
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else 'attachment'))
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self.logger.debug('I/O Exception: %s' % str(e))
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# tidy up any open files before we make our early
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# return
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for entry in files.values():
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self.logger.trace(
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'Closing attachment {}'.format(entry[0]))
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entry[1].close()
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return False
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reply_to = formataddr(self.from_addr, charset='utf-8')
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# Prepare our payload
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payload = {
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# pass skip-verification switch upstream too
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'o:skip-verification': not self.verify_certificate,
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# Base payload options
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'from': reply_to,
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'subject': title,
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}
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if self.notify_format == NotifyFormat.HTML:
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payload['html'] = body
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else:
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payload['text'] = body
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# Prepare our URL as it's based on our hostname
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url = '{}{}/messages'.format(
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MAILGUN_API_LOOKUP[self.region_name], self.host)
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# Create a copy of the targets list
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emails = list(self.targets)
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for index in range(0, len(emails), batch_size):
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# Initialize our cc list
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cc = (self.cc - self.bcc)
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# Initialize our bcc list
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bcc = set(self.bcc)
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# Initialize our to list
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to = list()
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# Ensure we're pointed to the head of the attachment; this doesn't
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# do much for the first iteration through this loop as we're
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# already pointing there..., but it allows us to re-use the
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# attachment over and over again without closing and then
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# re-opening the same file again and again
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for entry in files.values():
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try:
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self.logger.trace(
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'Seeking to head of attachment {}'.format(entry[0]))
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entry[1].seek(0)
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except (OSError, IOError) as e:
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self.logger.warning(
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'An I/O error occurred seeking to head of attachment '
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'{}.'.format(entry[0]))
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self.logger.debug('I/O Exception: %s' % str(e))
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# tidy up any open files before we make our early
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# return
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for entry in files.values():
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self.logger.trace(
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'Closing attachment {}'.format(entry[0]))
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entry[1].close()
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return False
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for to_addr in self.targets[index:index + batch_size]:
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# Strip target out of cc list if in To
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cc = (cc - set([to_addr[1]]))
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# Strip target out of bcc list if in To
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bcc = (bcc - set([to_addr[1]]))
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# Prepare our `to`
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to.append(formataddr(to_addr, charset='utf-8'))
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# Prepare our To
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payload['to'] = ','.join(to)
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if cc:
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# Format our cc addresses to support the Name field
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payload['cc'] = ','.join([formataddr(
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(self.names.get(addr, False), addr), charset='utf-8')
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for addr in cc])
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# Format our bcc addresses to support the Name field
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if bcc:
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payload['bcc'] = ','.join(bcc)
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# Store our token entries; users can reference these as %value%
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# in their email message.
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if self.tokens:
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payload.update(
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{'v:{}'.format(k): v for k, v in self.tokens.items()})
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# Store our header entries if defined into the payload
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# in their payload
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if self.headers:
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payload.update(
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{'h:{}'.format(k): v for k, v in self.headers.items()})
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# Some Debug Logging
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self.logger.debug('Mailgun POST URL: {} (cert_verify={})'.format(
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url, self.verify_certificate))
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self.logger.debug('Mailgun Payload: {}' .format(payload))
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# For logging output of success and errors; we get a head count
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|
# of our outbound details:
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verbose_dest = ', '.join(
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[x[1] for x in self.targets[index:index + batch_size]]) \
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if len(self.targets[index:index + batch_size]) <= 3 \
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else '{} recipients'.format(
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len(self.targets[index:index + batch_size]))
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# Always call throttle before any remote server i/o is made
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self.throttle()
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try:
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r = requests.post(
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url,
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auth=("api", self.apikey),
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data=payload,
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headers=headers,
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files=None if not files else files,
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verify=self.verify_certificate,
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timeout=self.request_timeout,
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)
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if r.status_code != requests.codes.ok:
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# We had a problem
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status_str = \
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NotifyBase.http_response_code_lookup(
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r.status_code, MAILGUN_HTTP_ERROR_MAP)
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self.logger.warning(
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'Failed to send Mailgun notification to {}: '
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'{}{}error={}.'.format(
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verbose_dest,
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status_str,
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', ' if status_str else '',
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r.status_code))
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self.logger.debug(
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'Response Details:\r\n{}'.format(r.content))
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# Mark our failure
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|
has_error = True
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continue
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else:
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self.logger.info(
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|
'Sent Mailgun notification to {}.'.format(
|
|
verbose_dest))
|
|
|
|
except requests.RequestException as e:
|
|
self.logger.warning(
|
|
'A Connection error occurred sending Mailgun:%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
|
|
|
|
# Close any potential attachments that are still open
|
|
for entry in files.values():
|
|
self.logger.trace(
|
|
'Closing attachment {}'.format(entry[0]))
|
|
entry[1].close()
|
|
|
|
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_addr[0]:
|
|
# from_addr specified; pass it back on the url
|
|
params['name'] = self.from_addr[0]
|
|
|
|
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=NotifyMailgun.quote(self.user, safe=''),
|
|
apikey=self.pprint(self.apikey, privacy, safe=''),
|
|
targets='' if not has_targets else '/'.join(
|
|
[NotifyMailgun.quote('{}{}'.format(
|
|
'' if not e[0] else '{}:'.format(e[0]), e[1]),
|
|
safe='') for e in self.targets]),
|
|
params=NotifyMailgun.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'] = NotifyMailgun.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
|
|
|
|
# Attempt to detect 'from' email address
|
|
if 'from' in results['qsd'] and len(results['qsd']['from']):
|
|
results['from_addr'] = \
|
|
NotifyMailgun.unquote(results['qsd']['from'])
|
|
|
|
if 'name' in results['qsd'] and len(results['qsd']['name']):
|
|
# Depricate use of both `from=` and `name=` in the same url as
|
|
# they will be synomomus of one another in the future.
|
|
results['from_addr'] = formataddr(
|
|
(NotifyMailgun.unquote(results['qsd']['name']),
|
|
results['from_addr']), charset='utf-8')
|
|
logger.warning(
|
|
'Mailgun name= and from= are synonymous; '
|
|
'use one or the other.')
|
|
|
|
elif 'name' in results['qsd'] and len(results['qsd']['name']):
|
|
# Extract from name to associate with from address
|
|
results['from_addr'] = \
|
|
NotifyMailgun.unquote(results['qsd']['name'])
|
|
|
|
if 'region' in results['qsd'] and len(results['qsd']['region']):
|
|
# Acquire region if defined
|
|
results['region_name'] = \
|
|
NotifyMailgun.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', NotifyMailgun.template_args['batch']['default']))
|
|
|
|
return results
|