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751 lines
26 KiB
751 lines
26 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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# For this to work correctly you need to create a webhook. To do this just
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# click on the little gear icon next to the channel you're part of. From
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# here you'll be able to access the Webhooks menu and create a new one.
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#
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# When you've completed, you'll get a URL that looks a little like this:
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# https://discord.com/api/webhooks/417429632418316298/\
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# JHZ7lQml277CDHmQKMHI8qBe7bk2ZwO5UKjCiOAF7711o33MyqU344Qpgv7YTpadV_js
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#
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# Simplified, it looks like this:
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# https://discord.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
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#
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# This plugin will simply work using the url of:
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# discord://WEBHOOK_ID/WEBHOOK_TOKEN
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#
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# API Documentation on Webhooks:
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# - https://discord.com/developers/docs/resources/webhook
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#
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import re
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import requests
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from json import dumps
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from datetime import timedelta
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from datetime import datetime
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from datetime import timezone
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from .NotifyBase import NotifyBase
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from ..common import NotifyImageSize
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from ..common import NotifyFormat
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from ..common import NotifyType
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from ..utils import parse_bool
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from ..utils import validate_regex
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from ..AppriseLocale import gettext_lazy as _
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from ..attachment.AttachBase import AttachBase
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# Used to detect user/role IDs
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USER_ROLE_DETECTION_RE = re.compile(
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r'\s*(?:<@(?P<role>&?)(?P<id>[0-9]+)>|@(?P<value>[a-z0-9]+))', re.I)
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class NotifyDiscord(NotifyBase):
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"""
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A wrapper to Discord Notifications
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"""
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# The default descriptive name associated with the Notification
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service_name = 'Discord'
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# The services URL
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service_url = 'https://discord.com/'
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# The default secure protocol
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secure_protocol = 'discord'
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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_discord'
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# Discord Webhook
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notify_url = 'https://discord.com/api/webhooks'
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# Support attachments
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attachment_support = True
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# Allows the user to specify the NotifyImageSize object
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image_size = NotifyImageSize.XY_256
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# Discord is kind enough to return how many more requests we're allowed to
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# continue to make within it's header response as:
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# X-RateLimit-Reset: The epoc time (in seconds) we can expect our
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# rate-limit to be reset.
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# X-RateLimit-Remaining: an integer identifying how many requests we're
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# still allow to make.
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request_rate_per_sec = 0
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# Taken right from google.auth.helpers:
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clock_skew = timedelta(seconds=10)
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# The maximum allowable characters allowed in the body per message
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body_maxlen = 2000
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# The 2000 characters above defined by the body_maxlen include that of the
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# title. Setting this to True ensures overflow options behave properly
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overflow_amalgamate_title = True
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# Discord has a limit of the number of fields you can include in an
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# embeds message. This value allows the discord message to safely
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# break into multiple messages to handle these cases.
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discord_max_fields = 10
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# Define object templates
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templates = (
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'{schema}://{webhook_id}/{webhook_token}',
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'{schema}://{botname}@{webhook_id}/{webhook_token}',
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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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'botname': {
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'name': _('Bot Name'),
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'type': 'string',
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'map_to': 'user',
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},
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'webhook_id': {
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'name': _('Webhook ID'),
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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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'webhook_token': {
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'name': _('Webhook Token'),
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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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})
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# Define our template arguments
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template_args = dict(NotifyBase.template_args, **{
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'tts': {
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'name': _('Text To Speech'),
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'type': 'bool',
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'default': False,
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},
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'avatar': {
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'name': _('Avatar Image'),
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'type': 'bool',
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'default': True,
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},
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'avatar_url': {
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'name': _('Avatar URL'),
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'type': 'string',
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},
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'href': {
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'name': _('URL'),
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'type': 'string',
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},
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'url': {
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'alias_of': 'href',
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},
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# Send a message to the specified thread within a webhook's channel.
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# The thread will automatically be unarchived.
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'thread': {
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'name': _('Thread ID'),
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'type': 'string',
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},
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'footer': {
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'name': _('Display Footer'),
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'type': 'bool',
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'default': False,
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},
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'footer_logo': {
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'name': _('Footer Logo'),
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'type': 'bool',
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'default': True,
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},
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'fields': {
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'name': _('Use Fields'),
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'type': 'bool',
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'default': True,
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},
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'image': {
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'name': _('Include Image'),
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'type': 'bool',
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'default': False,
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'map_to': 'include_image',
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},
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})
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def __init__(self, webhook_id, webhook_token, tts=False, avatar=True,
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footer=False, footer_logo=True, include_image=False,
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fields=True, avatar_url=None, href=None, thread=None,
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**kwargs):
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"""
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Initialize Discord Object
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"""
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super().__init__(**kwargs)
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# Webhook ID (associated with project)
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self.webhook_id = validate_regex(webhook_id)
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if not self.webhook_id:
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msg = 'An invalid Discord Webhook ID ' \
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'({}) was specified.'.format(webhook_id)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Webhook Token (associated with project)
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self.webhook_token = validate_regex(webhook_token)
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if not self.webhook_token:
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msg = 'An invalid Discord Webhook Token ' \
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'({}) was specified.'.format(webhook_token)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Text To Speech
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self.tts = tts
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# Over-ride Avatar Icon
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self.avatar = avatar
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# Place a footer
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self.footer = footer
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# include a footer_logo in footer
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self.footer_logo = footer_logo
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# Place a thumbnail image inline with the message body
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self.include_image = include_image
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# Use Fields
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self.fields = fields
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# Specified Thread ID
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self.thread_id = thread
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# Avatar URL
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# This allows a user to provide an over-ride to the otherwise
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# dynamically generated avatar url images
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self.avatar_url = avatar_url
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# A URL to have the title link to
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self.href = href
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# For Tracking Purposes
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self.ratelimit_reset = datetime.now(timezone.utc).replace(tzinfo=None)
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# Default to 1.0
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self.ratelimit_remaining = 1.0
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return
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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 Discord Notification
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"""
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payload = {
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# Text-To-Speech
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'tts': self.tts,
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# If Text-To-Speech is set to True, then we do not want to wait
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# for the whole message before continuing. Otherwise, we wait
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'wait': self.tts is False,
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}
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# Acquire image_url
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image_url = self.image_url(notify_type)
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if self.avatar and (image_url or self.avatar_url):
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payload['avatar_url'] = \
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self.avatar_url if self.avatar_url else image_url
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if self.user:
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# Optionally override the default username of the webhook
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payload['username'] = self.user
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# Associate our thread_id with our message
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params = {'thread_id': self.thread_id} if self.thread_id else None
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if body:
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# our fields variable
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fields = []
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if self.notify_format == NotifyFormat.MARKDOWN:
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# Use embeds for payload
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payload['embeds'] = [{
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'author': {
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'name': self.app_id,
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'url': self.app_url,
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},
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'title': title,
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'description': body,
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# Our color associated with our notification
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'color': self.color(notify_type, int),
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}]
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if self.href:
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payload['embeds'][0]['url'] = self.href
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if self.footer:
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# Acquire logo URL
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logo_url = self.image_url(notify_type, logo=True)
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# Set Footer text to our app description
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payload['embeds'][0]['footer'] = {
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'text': self.app_desc,
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}
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if self.footer_logo and logo_url:
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payload['embeds'][0]['footer']['icon_url'] = logo_url
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if self.include_image and image_url:
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payload['embeds'][0]['thumbnail'] = {
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'url': image_url,
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'height': 256,
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'width': 256,
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}
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if self.fields:
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# Break titles out so that we can sort them in embeds
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description, fields = self.extract_markdown_sections(body)
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# Swap first entry for description
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payload['embeds'][0]['description'] = description
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if fields:
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# Apply our additional parsing for a better
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# presentation
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payload['embeds'][0]['fields'] = \
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fields[:self.discord_max_fields]
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# Remove entry from head of fields
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fields = fields[self.discord_max_fields:]
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else:
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# not markdown
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payload['content'] = \
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body if not title else "{}\r\n{}".format(title, body)
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# parse for user id's <@123> and role IDs <@&456>
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results = USER_ROLE_DETECTION_RE.findall(body)
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if results:
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payload['allow_mentions'] = {
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'parse': [],
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'users': [],
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'roles': [],
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}
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_content = []
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for (is_role, no, value) in results:
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if value:
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payload['allow_mentions']['parse'].append(value)
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_content.append(f'@{value}')
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elif is_role:
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payload['allow_mentions']['roles'].append(no)
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_content.append(f'<@&{no}>')
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else: # is_user
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payload['allow_mentions']['users'].append(no)
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_content.append(f'<@{no}>')
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if self.notify_format == NotifyFormat.MARKDOWN:
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# Add pingable elements to content field
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payload['content'] = '👉 ' + ' '.join(_content)
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if not self._send(payload, params=params):
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# We failed to post our message
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return False
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# Process any remaining fields IF set
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if fields:
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payload['embeds'][0]['description'] = ''
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for i in range(0, len(fields), self.discord_max_fields):
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payload['embeds'][0]['fields'] = \
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fields[i:i + self.discord_max_fields]
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if not self._send(payload):
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# We failed to post our message
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return False
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if attach and self.attachment_support:
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# Update our payload; the idea is to preserve it's other detected
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# and assigned values for re-use here too
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payload.update({
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# Text-To-Speech
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'tts': False,
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# Wait until the upload has posted itself before continuing
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'wait': True,
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})
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#
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# Remove our text/title based content for attachment use
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#
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if 'embeds' in payload:
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del payload['embeds']
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if 'content' in payload:
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del payload['content']
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if 'allow_mentions' in payload:
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del payload['allow_mentions']
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#
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# Send our attachments
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#
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for attachment in attach:
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self.logger.info(
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'Posting Discord Attachment {}'.format(attachment.name))
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if not self._send(payload, params=params, attach=attachment):
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# We failed to post our message
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return False
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# Otherwise return
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return True
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def _send(self, payload, attach=None, params=None, rate_limit=1,
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**kwargs):
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"""
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Wrapper to the requests (post) object
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"""
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# Our headers
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headers = {
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'User-Agent': self.app_id,
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}
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# Construct Notify URL
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notify_url = '{0}/{1}/{2}'.format(
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self.notify_url,
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self.webhook_id,
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self.webhook_token,
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)
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self.logger.debug('Discord POST URL: %s (cert_verify=%r)' % (
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notify_url, self.verify_certificate,
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))
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self.logger.debug('Discord Payload: %s' % str(payload))
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# By default set wait to None
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wait = None
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if self.ratelimit_remaining <= 0.0:
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# Determine how long we should wait for or if we should wait at
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# all. This isn't fool-proof because we can't be sure the client
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# time (calling this script) is completely synced up with the
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# Discord server. One would hope we're on NTP and our clocks are
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# the same allowing this to role smoothly:
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now = datetime.now(timezone.utc).replace(tzinfo=None)
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if now < self.ratelimit_reset:
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# We need to throttle for the difference in seconds
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wait = abs(
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(self.ratelimit_reset - now + self.clock_skew)
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.total_seconds())
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# Always call throttle before any remote server i/o is made;
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self.throttle(wait=wait)
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# Perform some simple error checking
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if isinstance(attach, AttachBase):
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if not attach:
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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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attach.url(privacy=True)))
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return False
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self.logger.debug(
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'Posting Discord attachment {}'.format(
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attach.url(privacy=True)))
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# Our attachment path (if specified)
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files = None
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try:
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# Open our attachment path if required:
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if attach:
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files = {'file': (attach.name, open(attach.path, 'rb'))}
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else:
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headers['Content-Type'] = 'application/json; charset=utf-8'
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r = requests.post(
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notify_url,
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params=params,
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data=payload if files else dumps(payload),
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headers=headers,
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files=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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# Handle rate limiting (if specified)
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try:
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# Store our rate limiting (if provided)
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self.ratelimit_remaining = \
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float(r.headers.get(
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'X-RateLimit-Remaining'))
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self.ratelimit_reset = datetime.fromtimestamp(
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int(r.headers.get('X-RateLimit-Reset')),
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timezone.utc).replace(tzinfo=None)
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except (TypeError, ValueError):
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# This is returned if we could not retrieve this
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# information gracefully accept this state and move on
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pass
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if r.status_code not in (
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requests.codes.ok, requests.codes.no_content):
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# We had a problem
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status_str = \
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NotifyBase.http_response_code_lookup(r.status_code)
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if r.status_code == requests.codes.too_many_requests \
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and rate_limit > 0:
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# handle rate limiting
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self.logger.warning(
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'Discord rate limiting in effect; '
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'blocking for %.2f second(s)',
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self.ratelimit_remaining)
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# Try one more time before failing
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return self._send(
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payload=payload, attach=attach, params=params,
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rate_limit=rate_limit - 1, **kwargs)
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self.logger.warning(
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'Failed to send {}to Discord notification: '
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'{}{}error={}.'.format(
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attach.name if attach else '',
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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('Response Details:\r\n{}'.format(r.content))
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# Return; we're done
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return False
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else:
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self.logger.info('Sent Discord {}.'.format(
|
|
'attachment' if attach else 'notification'))
|
|
|
|
except requests.RequestException as e:
|
|
self.logger.warning(
|
|
'A Connection error occurred posting {}to Discord.'.format(
|
|
attach.name if attach else ''))
|
|
self.logger.debug('Socket Exception: %s' % str(e))
|
|
return False
|
|
|
|
except (OSError, IOError) as e:
|
|
self.logger.warning(
|
|
'An I/O error occurred while reading {}.'.format(
|
|
attach.name if attach else 'attachment'))
|
|
self.logger.debug('I/O Exception: %s' % str(e))
|
|
return False
|
|
|
|
finally:
|
|
# Close our file (if it's open) stored in the second element
|
|
# of our files tuple (index 1)
|
|
if files:
|
|
files['file'][1].close()
|
|
|
|
return True
|
|
|
|
def url(self, privacy=False, *args, **kwargs):
|
|
"""
|
|
Returns the URL built dynamically based on specified arguments.
|
|
"""
|
|
|
|
# Define any URL parameters
|
|
params = {
|
|
'tts': 'yes' if self.tts else 'no',
|
|
'avatar': 'yes' if self.avatar else 'no',
|
|
'footer': 'yes' if self.footer else 'no',
|
|
'footer_logo': 'yes' if self.footer_logo else 'no',
|
|
'image': 'yes' if self.include_image else 'no',
|
|
'fields': 'yes' if self.fields else 'no',
|
|
}
|
|
|
|
if self.avatar_url:
|
|
params['avatar_url'] = self.avatar_url
|
|
|
|
if self.href:
|
|
params['href'] = self.href
|
|
|
|
if self.thread_id:
|
|
params['thread'] = self.thread_id
|
|
|
|
# Extend our parameters
|
|
params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
|
|
|
|
return '{schema}://{webhook_id}/{webhook_token}/?{params}'.format(
|
|
schema=self.secure_protocol,
|
|
webhook_id=self.pprint(self.webhook_id, privacy, safe=''),
|
|
webhook_token=self.pprint(self.webhook_token, privacy, safe=''),
|
|
params=NotifyDiscord.urlencode(params),
|
|
)
|
|
|
|
@staticmethod
|
|
def parse_url(url):
|
|
"""
|
|
Parses the URL and returns enough arguments that can allow
|
|
us to re-instantiate this object.
|
|
|
|
Syntax:
|
|
discord://webhook_id/webhook_token
|
|
|
|
"""
|
|
results = NotifyBase.parse_url(url, verify_host=False)
|
|
if not results:
|
|
# We're done early as we couldn't load the results
|
|
return results
|
|
|
|
# Store our webhook ID
|
|
webhook_id = NotifyDiscord.unquote(results['host'])
|
|
|
|
# Now fetch our tokens
|
|
try:
|
|
webhook_token = \
|
|
NotifyDiscord.split_path(results['fullpath'])[0]
|
|
|
|
except IndexError:
|
|
# Force some bad values that will get caught
|
|
# in parsing later
|
|
webhook_token = None
|
|
|
|
results['webhook_id'] = webhook_id
|
|
results['webhook_token'] = webhook_token
|
|
|
|
# Text To Speech
|
|
results['tts'] = parse_bool(results['qsd'].get('tts', False))
|
|
|
|
# Use sections
|
|
# effectively detect multiple fields and break them off
|
|
# into sections
|
|
results['fields'] = parse_bool(results['qsd'].get('fields', True))
|
|
|
|
# Use Footer
|
|
results['footer'] = parse_bool(results['qsd'].get('footer', False))
|
|
|
|
# Use Footer Logo
|
|
results['footer_logo'] = \
|
|
parse_bool(results['qsd'].get('footer_logo', True))
|
|
|
|
# Update Avatar Icon
|
|
results['avatar'] = parse_bool(results['qsd'].get('avatar', True))
|
|
|
|
# Boolean to include an image or not
|
|
results['include_image'] = parse_bool(results['qsd'].get(
|
|
'image', NotifyDiscord.template_args['image']['default']))
|
|
|
|
# Extract avatar url if it was specified
|
|
if 'avatar_url' in results['qsd']:
|
|
results['avatar_url'] = \
|
|
NotifyDiscord.unquote(results['qsd']['avatar_url'])
|
|
|
|
# Extract url if it was specified
|
|
if 'href' in results['qsd']:
|
|
results['href'] = \
|
|
NotifyDiscord.unquote(results['qsd']['href'])
|
|
|
|
elif 'url' in results['qsd']:
|
|
results['href'] = \
|
|
NotifyDiscord.unquote(results['qsd']['url'])
|
|
# Markdown is implied
|
|
results['format'] = NotifyFormat.MARKDOWN
|
|
|
|
# Extract thread id if it was specified
|
|
if 'thread' in results['qsd']:
|
|
results['thread'] = \
|
|
NotifyDiscord.unquote(results['qsd']['thread'])
|
|
# Markdown is implied
|
|
results['format'] = NotifyFormat.MARKDOWN
|
|
|
|
return results
|
|
|
|
@staticmethod
|
|
def parse_native_url(url):
|
|
"""
|
|
Support https://discord.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
|
|
Support Legacy URL as well:
|
|
https://discordapp.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
|
|
"""
|
|
|
|
result = re.match(
|
|
r'^https?://discord(app)?\.com/api/webhooks/'
|
|
r'(?P<webhook_id>[0-9]+)/'
|
|
r'(?P<webhook_token>[A-Z0-9_-]+)/?'
|
|
r'(?P<params>\?.+)?$', url, re.I)
|
|
|
|
if result:
|
|
return NotifyDiscord.parse_url(
|
|
'{schema}://{webhook_id}/{webhook_token}/{params}'.format(
|
|
schema=NotifyDiscord.secure_protocol,
|
|
webhook_id=result.group('webhook_id'),
|
|
webhook_token=result.group('webhook_token'),
|
|
params='' if not result.group('params')
|
|
else result.group('params')))
|
|
|
|
return None
|
|
|
|
@staticmethod
|
|
def extract_markdown_sections(markdown):
|
|
"""
|
|
Takes a string in a markdown type format and extracts
|
|
the headers and their corresponding sections into individual
|
|
fields that get passed as an embed entry to Discord.
|
|
|
|
"""
|
|
# Search for any header information found without it's own section
|
|
# identifier
|
|
match = re.match(
|
|
r'^\s*(?P<desc>[^\s#]+.*?)(?=\s*$|[\r\n]+\s*#)',
|
|
markdown, flags=re.S)
|
|
|
|
description = match.group('desc').strip() if match else ''
|
|
if description:
|
|
# Strip description from our string since it has been handled
|
|
# now.
|
|
markdown = re.sub(re.escape(description), '', markdown, count=1)
|
|
|
|
regex = re.compile(
|
|
r'\s*#[# \t\v]*(?P<name>[^\n]+)(\n|\s*$)'
|
|
r'\s*((?P<value>[^#].+?)(?=\s*$|[\r\n]+\s*#))?', flags=re.S)
|
|
|
|
common = regex.finditer(markdown)
|
|
fields = list()
|
|
for el in common:
|
|
d = el.groupdict()
|
|
|
|
fields.append({
|
|
'name': d.get('name', '').strip('#`* \r\n\t\v'),
|
|
'value': '```{}\n{}```'.format(
|
|
'md' if d.get('value') else '',
|
|
d.get('value').strip() + '\n' if d.get('value') else '',
|
|
),
|
|
})
|
|
|
|
return description, fields
|