423 lines
14 KiB
Python
423 lines
14 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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import gettext
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import html
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import logging
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import re
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import sys
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from configparser import ConfigParser
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from json import loads
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from urllib.parse import urlparse
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import feedparser
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import redis
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import telegram
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from telegram.error import Unauthorized
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from telegram.ext import CommandHandler, Updater
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from telegram.ext.dispatcher import run_async
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import utils
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config = ConfigParser()
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try:
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config.read_file(open("config.ini"))
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except FileNotFoundError:
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logging.critical("config.ini not found")
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sys.exit(1)
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# Language
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try:
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lang = config["DEFAULT"]["lang"]
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except KeyError:
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lang = "en"
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el = gettext.translation("base", localedir="locales", languages=[lang, "en"])
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el.install()
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_ = el.gettext
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# Logging
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try:
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logging_conf = config["LOGGING"]
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logging_level = logging_conf.get("level", "INFO")
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logging_format = logging_conf.get("format", "%(asctime)s - %(levelname)s: %(message)s", raw=True)
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if logging_level not in ["DEBUG", "INFO", "CRITICAL", "ERROR", "WARNING"]:
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logging.warning(_("Logging Level invalid. Will be changed to INFO"))
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logging.basicConfig(format=logging_format, level=logging.INFO, datefmt="%d.%m.%Y %H:%M:%S")
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else:
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logging.basicConfig(format=logging_format,
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level=eval("logging.{0}".format(logging_level.upper())),
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datefmt="%d.%m.%Y %H:%M:%S")
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except KeyError:
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logging.basicConfig(format="%(asctime)s - %(levelname)s: %(message)s",
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level=logging.INFO,
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datefmt="%d.%m.%Y %H:%M:%S")
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logger = logging.getLogger(__name__)
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# Bot token
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try:
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bot_token = config["DEFAULT"]["token"]
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except KeyError:
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logger.error(_("Bot token is missing, check config.ini."))
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sys.exit(1)
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if not bot_token:
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logger.error(_("Bot token is missing, check config.ini."))
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sys.exit(1)
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# Admins
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try:
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admins = loads(config["ADMIN"]["id"])
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except KeyError:
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logger.error(_("No admin IDs are set, check config.ini."))
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sys.exit(1)
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if not admins:
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logger.error(_("No admin IDs are set, check config.ini."))
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sys.exit(1)
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for admin in admins:
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if not isinstance(admin, int):
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logger.error(_("Admin IDs need to be integers."))
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sys.exit(1)
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# Redis
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redis_conf = config["REDIS"]
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redis_db = redis_conf.get("db", 0)
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redis_host = redis_conf.get("host", "127.0.0.1")
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redis_port = redis_conf.get("port", 6379)
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redis_socket = redis_conf.get("socket_path")
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if redis_socket:
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r = redis.Redis(unix_socket_path=redis_socket, db=int(redis_db), decode_responses=True)
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else:
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r = redis.Redis(host=redis_host, port=int(redis_port), db=int(redis_db), decode_responses=True)
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if not r.ping():
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logging.getLogger("Redis").critical(_("Failed to connect to Redis server."))
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sys.exit(1)
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feed_hash = "pythonbot:rss:{0}"
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@run_async
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def start(update, context):
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if not utils.can_use_bot(update):
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return
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update.message.reply_text(
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text=_("<b>Welcome to the RSS Bot!</b>\nSend /help to get started."),
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parse_mode=telegram.ParseMode.HTML
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)
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@run_async
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def help_text(update, context):
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if not utils.can_use_bot(update):
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return
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update.message.reply_text(
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text=_("<b>/rss</b> <i>[Chat]</i>: Show subbed feeds\n"
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"<b>/sub</b> <i>Feed URL</i> <i>[Chat]</i>: Sub to feed\n"
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"<b>/del</b> <i>n</i> <i>[Chat]</i>: Unsubscribe feed\n"
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"<i>[Chat]</i> is an optional argument with the @Channelname."),
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parse_mode=telegram.ParseMode.HTML
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)
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@run_async
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def list_feeds(update, context):
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if not utils.can_use_bot(update):
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return
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if context.args:
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chat_name = context.args[0]
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try:
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resp = context.bot.getChat(chat_name)
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except telegram.error.BadRequest:
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update.message.reply_text("❌ " + _("This channel does not exist."))
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return
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chat_id = str(resp.id)
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chat_title = resp.title
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else:
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chat_id = str(update.message.chat.id)
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if update.message.chat.type == "private":
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chat_title = update.message.chat.first_name
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else:
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chat_title = update.message.chat.title
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subs = r.smembers(feed_hash.format(chat_id))
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if not subs:
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text = "❌ " + _("There are no feeds.")
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else:
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text = _("<b>{0}</b> is subscribed to:\n").format(html.escape(chat_title))
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for n, feed in enumerate(subs):
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text += "<b>" + str(n + 1) + ")</b> " + feed + "\n"
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update.message.reply_text(
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text=text,
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parse_mode=telegram.ParseMode.HTML
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)
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@run_async
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def subscribe(update, context):
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if not utils.can_use_bot(update):
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return
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if not context.args:
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update.message.reply_text("❌ " + _("No feed URL given."))
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return
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feed_url = context.args[0]
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if not re.match("^http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&~+]|[!*(),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+$", feed_url):
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update.message.reply_text("❌ " + _("That doesn't look like an URL."))
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return
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# Get Chat ID from name if given
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if len(context.args) > 1:
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chat_name = context.args[1]
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try:
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resp = context.bot.getChat(chat_name)
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except telegram.error.BadRequest:
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update.message.reply_text("❌ " + _("This channel does not exist."))
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return
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chat_id = str(resp.id)
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resp = context.bot.getChatMember(chat_id, context.bot.id)
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if resp.status != "administrator":
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update.message.reply_text("❌ " + _("You need to add the bot as an administrator to the channel."))
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return
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else:
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chat_id = str(update.message.chat.id)
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context.bot.sendChatAction(update.message.chat.id, action=telegram.ChatAction.TYPING)
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data = feedparser.parse(feed_url)
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if "link" not in data.feed:
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update.message.reply_text("❌ " + _("Not a valid feed."))
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return
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feed_url = data.href # Follow all redirects
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if r.sismember(feed_hash.format(chat_id), feed_url):
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update.message.reply_text("✅ " + _("Already subscribed to this feed."))
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return
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if "title" not in data.feed:
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feed_title = feed_url
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else:
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feed_title = html.escape(data.feed["title"])
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# Save the last entry in Redis, if it doesn't exist
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if data.entries:
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last_entry_hash = feed_hash.format(feed_url + ":last_entry")
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if not r.exists(last_entry_hash):
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if "id" not in data.entries[0]:
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last_entry = data.entries[0]["link"]
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else:
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last_entry = data.entries[0]["id"]
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r.set(last_entry_hash, last_entry)
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r.sadd(feed_hash.format(feed_url + ":subs"), chat_id)
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r.sadd(feed_hash.format(chat_id), feed_url)
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update.message.reply_text(
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text="✅ " + _("<b>{0}</b> added!").format(feed_title),
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parse_mode=telegram.ParseMode.HTML
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)
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@run_async
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def unsubscribe(update, context):
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if not utils.can_use_bot(update):
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return
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if not context.args:
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update.message.reply_text("❌ " + _("No number given."))
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return
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# Get Chat ID from name if given
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if len(context.args) > 1:
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chat_name = context.args[1]
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try:
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resp = context.bot.getChat(chat_name)
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except telegram.error.BadRequest:
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update.message.reply_text("❌ " + _("This channel does not exist."))
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return
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chat_id = str(resp.id)
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else:
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chat_id = str(update.message.chat.id)
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try:
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n = int(context.args[0])
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except ValueError:
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update.message.reply_text("❌ " + _("No number given."))
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return
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chat_hash = feed_hash.format(chat_id)
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subs = r.smembers(chat_hash)
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if n < 1:
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update.message.reply_text("❌ " + _("Number must be bigger than 0!"))
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return
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elif n > len(subs):
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update.message.reply_text("❌ " + _("Feed ID too high."))
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return
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feed_url = list(subs)[n - 1]
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sub_hash = feed_hash.format(feed_url + ":subs")
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r.srem(chat_hash, feed_url)
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r.srem(sub_hash, chat_id)
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if not r.smembers(sub_hash): # no one subscribed, remove it
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r.delete(feed_hash.format(feed_url + ":last_entry"))
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update.message.reply_text(
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text="✅ " + _("<b>{0}</b> removed!").format(feed_url),
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parse_mode=telegram.ParseMode.HTML
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)
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@run_async
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def check_feed(bot, key):
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feed_url = re.match("^" + feed_hash.format("(.+):subs$"), key).group(1)
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logger.info(feed_url)
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data = feedparser.parse(feed_url)
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if "link" not in data.feed:
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if "status" in data and data["status"] != 200:
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logger.warning(_("{0} - Not a valid feed, got HTTP Code {1}").format(feed_url, data["status"]))
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else:
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logger.warning(_("{0} - Not a valid feed: {1}").format(feed_url, str(data.bozo_exception)))
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return None
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if "title" not in data.feed:
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feed_title = data.feed["link"]
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else:
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feed_title = data.feed["title"]
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last_entry_hash = feed_hash.format(feed_url + ":last_entry")
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last_entry = r.get(last_entry_hash)
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new_entries = utils.get_new_entries(data.entries, last_entry)
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for entry in reversed(new_entries):
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if "title" not in entry:
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post_title = _("No title")
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else:
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post_title = utils.remove_html_tags(entry["title"]).strip()
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post_title = post_title.replace("<", "<").replace(">", ">")
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if "link" not in entry:
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post_link = data.link
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link_name = post_link
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else:
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post_link = entry.link
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feedproxy = re.search("^https?://feedproxy\.google\.com/~r/(.+?)/.*", post_link) # feedproxy.google.com
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if feedproxy:
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link_name = feedproxy.group(1)
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else:
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link_name = urlparse(post_link).netloc
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link_name = re.sub("^www\d?\.", "", link_name) # remove www.
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if "content" in entry:
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content = utils.get_content(entry.content[0]["value"])
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elif "summary" in entry:
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content = utils.get_content(entry.summary)
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else:
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content = ""
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text = "<b>{post_title}</b>\n<i>{feed_title}</i>\n{content}".format(
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post_title=post_title,
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feed_title=feed_title,
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content=content
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)
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readmore = _("Read more on {0}").format(link_name)
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text += "\n<a href=\"{post_link}\">{readmore}</a>\n".format(
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post_link=post_link,
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readmore=readmore
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)
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for member in r.smembers(key):
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try:
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bot.sendMessage(
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chat_id=member,
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text=text,
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parse_mode=telegram.ParseMode.HTML,
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disable_web_page_preview=True
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)
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except telegram.error.Unauthorized:
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logger.warning(_("Chat {0} doesn't exist anymore, will be deleted.").format(member))
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r.srem(key, member)
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r.delete(feed_hash.format(member))
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except telegram.error.ChatMigrated as new_chat:
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new_chat_id = new_chat.new_chat_id
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logger.info(_("Chat migrated: ") + member + " -> " + str(new_chat_id))
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r.srem(key, member)
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r.sadd(key, new_chat_id)
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r.rename(feed_hash.format(member), feed_hash.format(new_chat_id))
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bot.sendMessage(
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chat_id=member,
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text=text,
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parse_mode=telegram.ParseMode.HTML,
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disable_web_page_preview=True
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)
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except telegram.error.TimedOut:
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pass
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except telegram.error.BadRequest as exception:
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logger.error(exception)
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if not r.exists(key):
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r.delete(last_entry_hash)
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return
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# Set the new last entry if there are any
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if new_entries:
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if "id" not in new_entries[0]:
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new_last_entry = new_entries[0].link
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else:
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new_last_entry = new_entries[0].id
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r.set(last_entry_hash, new_last_entry)
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@run_async
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def run_job(context):
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logger.info("================================")
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keys = r.keys(feed_hash.format("*:subs"))
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for key in keys:
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check_feed(context.bot, key)
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def run_job_manually(update, context):
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run_job(context)
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def onerror(update, context):
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logger.error(_("Update \"%s\" caused error \"%s\""), update, context.error)
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# Main function
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def main():
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# Setup the updater and show bot info
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updater = Updater(token=bot_token, use_context=True)
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try:
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logger.info(
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_("Starting {0}, AKA @{1} ({2})").format(updater.bot.first_name, updater.bot.username, updater.bot.id))
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except Unauthorized:
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logger.critical(_("Logging in failed, check bot token."))
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sys.exit(1)
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# Register Handlers
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handlers = [
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CommandHandler("start", start),
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CommandHandler("help", help_text),
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CommandHandler("rss", list_feeds, pass_args=True),
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CommandHandler("sub", subscribe, pass_args=True),
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CommandHandler("del", unsubscribe, pass_args=True),
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CommandHandler("sync", run_job_manually)
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]
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for handler in handlers:
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updater.dispatcher.add_handler(handler)
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# Hide "Error while getting Updates" because it's not our fault
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updater.logger.addFilter((lambda log: not log.msg.startswith("Error while getting Updates:")))
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# Fix for Python <= 3.5
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updater.dispatcher.add_error_handler(onerror)
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updater.job_queue.run_repeating(
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run_job,
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interval=60.0,
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first=2.0
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)
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# Start this thing!
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updater.start_polling(
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clean=True,
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bootstrap_retries=-1,
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allowed_updates=["message"]
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)
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# Run Bot until CTRL+C is pressed or a SIGINIT,
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# SIGTERM or SIGABRT is sent.
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updater.idle()
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if __name__ == "__main__":
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main()
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