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444 lines
14 KiB
444 lines
14 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
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# All rights reserved.
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#
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# This code is licensed under the MIT License.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files(the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions :
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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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://discordapp.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://discordapp.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://discordapp.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 .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 ..AppriseLocale import gettext_lazy as _
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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://discordapp.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://discordapp.com/api/webhooks'
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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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# The maximum allowable characters allowed in the body per message
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body_maxlen = 2000
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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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'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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'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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**kwargs):
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"""
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Initialize Discord Object
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"""
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super(NotifyDiscord, self).__init__(**kwargs)
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if not webhook_id:
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msg = 'An invalid Client ID was specified.'
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self.logger.warning(msg)
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raise TypeError(msg)
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if not webhook_token:
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msg = 'An invalid Webhook Token was specified.'
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self.logger.warning(msg)
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raise TypeError(msg)
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# Store our data
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self.webhook_id = webhook_id
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self.webhook_token = webhook_token
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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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return
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def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
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"""
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Perform Discord Notification
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"""
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headers = {
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'User-Agent': self.app_id,
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'Content-Type': 'multipart/form-data',
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}
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# Prepare JSON Object
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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.notify_format == NotifyFormat.MARKDOWN:
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# Use embeds for payload
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payload['embeds'] = [{
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'provider': {
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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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'type': 'rich',
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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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# Break titles out so that we can sort them in embeds
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fields = self.extract_markdown_sections(body)
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if len(fields) > 0:
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# Apply our additional parsing for a better presentation
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# Swap first entry for description
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payload['embeds'][0]['description'] = \
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fields[0].get('name') + fields[0].get('value')
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payload['embeds'][0]['fields'] = fields[1:]
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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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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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if self.avatar and image_url:
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payload['avatar_url'] = 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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# 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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# 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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notify_url,
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data=dumps(payload),
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headers=headers,
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verify=self.verify_certificate,
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)
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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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self.logger.warning(
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'Failed to send Discord notification: '
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'{}{}error={}.'.format(
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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 notification.')
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except requests.RequestException as e:
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self.logger.warning(
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'A Connection error occured sending Discord '
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'notification.'
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)
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self.logger.debug('Socket Exception: %s' % str(e))
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return False
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return True
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def url(self):
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"""
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Returns the URL built dynamically based on specified arguments.
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"""
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# Define any arguments set
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args = {
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'format': self.notify_format,
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'overflow': self.overflow_mode,
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'tts': 'yes' if self.tts else 'no',
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'avatar': 'yes' if self.avatar else 'no',
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'footer': 'yes' if self.footer else 'no',
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'footer_logo': 'yes' if self.footer_logo else 'no',
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'image': 'yes' if self.include_image else 'no',
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'verify': 'yes' if self.verify_certificate else 'no',
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}
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return '{schema}://{webhook_id}/{webhook_token}/?{args}'.format(
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schema=self.secure_protocol,
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webhook_id=NotifyDiscord.quote(self.webhook_id, safe=''),
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webhook_token=NotifyDiscord.quote(self.webhook_token, safe=''),
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args=NotifyDiscord.urlencode(args),
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)
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@staticmethod
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def parse_url(url):
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"""
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Parses the URL and returns enough arguments that can allow
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us to substantiate this object.
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Syntax:
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discord://webhook_id/webhook_token
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"""
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results = NotifyBase.parse_url(url)
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if not results:
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# We're done early as we couldn't load the results
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return results
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# Store our webhook ID
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webhook_id = NotifyDiscord.unquote(results['host'])
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# Now fetch our tokens
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try:
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webhook_token = \
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NotifyDiscord.split_path(results['fullpath'])[0]
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except IndexError:
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# Force some bad values that will get caught
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# in parsing later
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webhook_token = None
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results['webhook_id'] = webhook_id
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results['webhook_token'] = webhook_token
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# Text To Speech
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results['tts'] = parse_bool(results['qsd'].get('tts', False))
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# Use Footer
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results['footer'] = parse_bool(results['qsd'].get('footer', False))
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# Use Footer Logo
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results['footer_logo'] = \
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parse_bool(results['qsd'].get('footer_logo', True))
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# Update Avatar Icon
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results['avatar'] = parse_bool(results['qsd'].get('avatar', True))
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# Use Thumbnail
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if 'thumbnail' in results['qsd']:
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# Deprication Notice issued for v0.7.5
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NotifyDiscord.logger.deprecate(
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'The Discord URL contains the parameter '
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'"thumbnail=" which will be deprecated in an upcoming '
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'release. Please use "image=" instead.'
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)
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# use image= for consistency with the other plugins but we also
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# support thumbnail= for backwards compatibility.
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results['include_image'] = \
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parse_bool(results['qsd'].get(
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'image', results['qsd'].get('thumbnail', False)))
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return results
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@staticmethod
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def parse_native_url(url):
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"""
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Support https://discordapp.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
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"""
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result = re.match(
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r'^https?://discordapp\.com/api/webhooks/'
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r'(?P<webhook_id>[0-9]+)/'
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r'(?P<webhook_token>[A-Z0-9_-]+)/?'
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r'(?P<args>\?[.+])?$', url, re.I)
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if result:
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return NotifyDiscord.parse_url(
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'{schema}://{webhook_id}/{webhook_token}/{args}'.format(
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schema=NotifyDiscord.secure_protocol,
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webhook_id=result.group('webhook_id'),
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webhook_token=result.group('webhook_token'),
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args='' if not result.group('args')
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else result.group('args')))
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return None
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@staticmethod
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def extract_markdown_sections(markdown):
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"""
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Takes a string in a markdown type format and extracts
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the headers and their corresponding sections into individual
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fields that get passed as an embed entry to Discord.
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"""
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regex = re.compile(
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r'^\s*#+\s*(?P<name>[^#\n]+)([ \r\t\v#])?'
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r'(?P<value>([^ \r\t\v#].+?)(\n(?!\s#))|\s*$)', flags=re.S | re.M)
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common = regex.finditer(markdown)
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fields = list()
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for el in common:
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d = el.groupdict()
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fields.append({
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'name': d.get('name', '').strip(),
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'value': '```md\n' + d.get('value', '').strip() + '\n```'
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})
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return fields
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