plomlombot.py

   1 #!/usr/bin/python3
   2
   3 import argparse
   4 import socket
   5 import datetime
   6 import select
   7 import time
   8 import re
   9 import requests
  10 import bs4
  11 import random
  12 import hashlib
  13 import os
  14 import plomsearch
  15
  16 # Defaults, may be overwritten by command line arguments.
  17 SERVER = "irc.freenode.net"
  18 PORT = 6667
  19 TIMEOUT = 240
  20 USERNAME = "plomlombot"
  21 NICKNAME = USERNAME
  22
  23
  24 class ExceptionForRestart(Exception):
  25     pass
  26
  27
  28 class IO:
  29
  30     def __init__(self, server, port, timeout):
  31         self.timeout = timeout
  32         self.socket = socket.socket()
  33         self.socket.connect((server, port))
  34         self.socket.setblocking(0)
  35         self.line_buffer = []
  36         self.rune_buffer = ""
  37         self.last_pong = time.time()
  38         self.servername = self.recv_line(send_ping=False).split(" ")[0][1:]
  39
  40     def _pingtest(self, send_ping=True):
  41         if self.last_pong + self.timeout < time.time():
  42             print("SERVER NOT ANSWERING")
  43             raise ExceptionForRestart
  44         if send_ping:
  45             self.send_line("PING " + self.servername)
  46
  47     def send_line(self, msg):
  48         msg = msg.replace("\r", " ")
  49         msg = msg.replace("\n", " ")
  50         if len(msg.encode("utf-8")) > 510:
  51             print("NOT SENT LINE TO SERVER (too long): " + msg)
  52         print("LINE TO SERVER: "
  53               + str(datetime.datetime.now()) + ": " + msg)
  54         msg = msg + "\r\n"
  55         msg_len = len(msg)
  56         total_sent_len = 0
  57         while total_sent_len < msg_len:
  58             sent_len = self.socket.send(bytes(msg[total_sent_len:], "UTF-8"))
  59             if sent_len == 0:
  60                 print("SOCKET CONNECTION BROKEN")
  61                 raise ExceptionForRestart
  62             total_sent_len += sent_len
  63
  64     def _recv_line_wrapped(self, send_ping=True):
  65         if len(self.line_buffer) > 0:
  66             return self.line_buffer.pop(0)
  67         while True:
  68             ready = select.select([self.socket], [], [], int(self.timeout / 2))
  69             if not ready[0]:
  70                 self._pingtest(send_ping)
  71                 return None
  72             self.last_pong = time.time()
  73             received_bytes = self.socket.recv(1024)
  74             try:
  75                 received_runes = received_bytes.decode("UTF-8")
  76             except UnicodeDecodeError:
  77                 received_runes = received_bytes.decode("latin1")
  78             if len(received_runes) == 0:
  79                 print("SOCKET CONNECTION BROKEN")
  80                 raise ExceptionForRestart
  81             self.rune_buffer += received_runes
  82             lines_split = str.split(self.rune_buffer, "\r\n")
  83             self.line_buffer += lines_split[:-1]
  84             self.rune_buffer = lines_split[-1]
  85             if len(self.line_buffer) > 0:
  86                 return self.line_buffer.pop(0)
  87
  88     def recv_line(self, send_ping=True):
  89         line = self._recv_line_wrapped(send_ping)
  90         if line:
  91             print("LINE FROM SERVER " + str(datetime.datetime.now()) + ": " +
  92                   line)
  93         return line
  94
  95
  96 def handle_command(command, argument, notice, target):
  97     hash_string = hashlib.md5(target.encode("utf-8")).hexdigest()
  98     quotesfile_name = "quotes_" + hash_string
  99
 100     def addquote():
 101         if not os.access(quotesfile_name, os.F_OK):
 102             quotesfile = open(quotesfile_name, "w")
 103             quotesfile.write("QUOTES FOR " + target + ":\n")
 104             quotesfile.close()
 105         quotesfile = open(quotesfile_name, "a")
 106         quotesfile.write(argument + "\n")
 107         quotesfile.close()
 108         quotesfile = open(quotesfile_name, "r")
 109         lines = quotesfile.readlines()
 110         quotesfile.close()
 111         notice("ADDED QUOTE #" + str(len(lines) - 1))
 112
 113     def quote():
 114
 115         def help():
 116             notice("SYNTAX: !quote [int] OR !quote search QUERY")
 117             notice("QUERY may be a boolean grouping of quoted or unquoted " +
 118                    "search terms, examples:")
 119             notice("!quote search foo")
 120             notice("!quote search foo AND (bar OR NOT baz)")
 121             notice("!quote search \"foo\\\"bar\" AND ('NOT\"' AND \"'foo'\"" +
 122                    " OR 'bar\\'baz')")
 123
 124         if "" == argument:
 125             tokens = []
 126         else:
 127             tokens = argument.split(" ")
 128         if (len(tokens) > 1 and tokens[0] != "search") or \
 129             (len(tokens) == 1 and
 130                 (tokens[0] == "search" or not tokens[0].isdigit())):
 131             help()
 132             return
 133         if not os.access(quotesfile_name, os.F_OK):
 134             notice("NO QUOTES AVAILABLE")
 135             return
 136         quotesfile = open(quotesfile_name, "r")
 137         lines = quotesfile.readlines()
 138         quotesfile.close()
 139         lines = lines[1:]
 140         if len(tokens) == 1:
 141             i = int(tokens[0])
 142             if i == 0 or i > len(lines):
 143                 notice("THERE'S NO QUOTE OF THAT INDEX")
 144                 return
 145             i = i - 1
 146         elif len(tokens) > 1:
 147             query = str.join(" ", tokens[1:])
 148             try:
 149                 results = plomsearch.search(query, lines)
 150             except plomsearch.LogicParserError as err:
 151                 notice("FAILED QUERY PARSING: " + str(err))
 152                 return
 153             if len(results) == 0:
 154                 notice("NO QUOTES MATCHING QUERY")
 155             else:
 156                 for result in results:
 157                     notice("QUOTE #" + str(result[0] + 1) + " : " + result[1])
 158             return
 159         else:
 160             i = random.randrange(len(lines))
 161         notice("QUOTE #" + str(i + 1) + ": " + lines[i])
 162
 163     if "addquote" == command:
 164         addquote()
 165     elif "quote" == command:
 166         quote()
 167
 168
 169 def handle_url(url, notice, show_url=False):
 170
 171     def mobile_twitter_hack(url):
 172         re1 = 'https?://(mobile.twitter.com/)[^/]+(/status/)'
 173         re2 = 'https?://mobile.twitter.com/([^/]+)/status/([^\?/]+)'
 174         m = re.search(re1, url)
 175         if m and m.group(1) == 'mobile.twitter.com/' \
 176                 and m.group(2) == '/status/':
 177             m = re.search(re2, url)
 178             url = 'https://twitter.com/' + m.group(1) + '/status/' + m.group(2)
 179             handle_url(url, notice, True)
 180             return True
 181
 182     try:
 183         r = requests.get(url, timeout=15)
 184     except (requests.exceptions.TooManyRedirects,
 185             requests.exceptions.ConnectionError,
 186             requests.exceptions.InvalidURL,
 187             requests.exceptions.InvalidSchema) as error:
 188         notice("TROUBLE FOLLOWING URL: " + str(error))
 189         return
 190     if mobile_twitter_hack(url):
 191         return
 192     title = bs4.BeautifulSoup(r.text).title
 193     if title:
 194         prefix = "PAGE TITLE: "
 195         if show_url:
 196             prefix = "PAGE TITLE FOR <" + url + ">: "
 197         notice(prefix + title.string.strip())
 198     else:
 199         notice("PAGE HAS NO TITLE TAG")
 200
 201
 202 class Session:
 203
 204     def __init__(self, io, username, nickname, channel):
 205         self.io = io
 206         self.nickname = nickname
 207         self.io.send_line("NICK " + self.nickname)
 208         self.io.send_line("USER " + username + " 0 * : ")
 209         self.io.send_line("JOIN " + channel)
 210
 211     def loop(self):
 212
 213         def handle_privmsg(tokens):
 214
 215             def handle_input(msg, target):
 216
 217                 def notice(msg):
 218                     self.io.send_line("NOTICE " + target + " :" + msg)
 219
 220                 matches = re.findall("(https?://[^\s>]+)", msg)
 221                 for i in range(len(matches)):
 222                     handle_url(matches[i], notice)
 223                 if "!" == msg[0]:
 224                     tokens = msg[1:].split()
 225                     argument = str.join(" ", tokens[1:])
 226                     handle_command(tokens[0], argument, notice, target)
 227
 228             sender = ""
 229             for rune in tokens[0]:
 230                 if rune == "!":
 231                     break
 232                 if rune != ":":
 233                     sender += rune
 234             receiver = ""
 235             for rune in tokens[2]:
 236                 if rune == "!":
 237                     break
 238                 if rune != ":":
 239                     receiver += rune
 240             target = sender
 241             if receiver != self.nickname:
 242                 target = receiver
 243             msg = str.join(" ", tokens[3:])[1:]
 244             handle_input(msg, target)
 245
 246         while True:
 247             line = self.io.recv_line()
 248             if not line:
 249                 continue
 250             tokens = line.split(" ")
 251             if len(tokens) > 1:
 252                 if tokens[0] == "PING":
 253                     self.io.send_line("PONG " + tokens[1])
 254                 elif tokens[1] == "PRIVMSG":
 255                     handle_privmsg(tokens)
 256
 257
 258 def parse_command_line_arguments():
 259     parser = argparse.ArgumentParser()
 260     parser.add_argument("-s, --server", action="store", dest="server",
 261                         default=SERVER,
 262                         help="server or server net to connect to (default: "
 263                         + SERVER + ")")
 264     parser.add_argument("-p, --port", action="store", dest="port", type=int,
 265                         default=PORT, help="port to connect to (default : "
 266                         + str(PORT) + ")")
 267     parser.add_argument("-t, --timeout", action="store", dest="timeout",
 268                         type=int, default=TIMEOUT,
 269                         help="timeout in seconds after which to attempt " +
 270                         "reconnect (default: " + str(TIMEOUT) + ")")
 271     parser.add_argument("-u, --username", action="store", dest="username",
 272                         default=USERNAME, help="username to use (default: "
 273                         + USERNAME + ")")
 274     parser.add_argument("-n, --nickname", action="store", dest="nickname",
 275                         default=NICKNAME, help="nickname to use (default: "
 276                         + NICKNAME + ")")
 277     parser.add_argument("CHANNEL", action="store", help="channel to join")
 278     opts, unknown = parser.parse_known_args()
 279     return opts
 280
 281
 282 opts = parse_command_line_arguments()
 283 while True:
 284     try:
 285         io = IO(opts.server, opts.port, opts.timeout)
 286         session = Session(io, opts.username, opts.nickname, opts.CHANNEL)
 287         session.loop()
 288     except ExceptionForRestart:
 289         io.socket.close()
 290         continue