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 init_session(server, port, timeout, nickname, username, channel):
  97     print("CONNECTING TO " + server)
  98     io = IO(server, port, timeout)
  99     io.send_line("NICK " + nickname)
 100     io.send_line("USER " + username + " 0 * : ")
 101     io.send_line("JOIN " + channel)
 102     return io
 103
 104
 105 def lineparser_loop(io, nickname):
 106
 107     def act_on_privmsg(tokens):
 108
 109         def notice(msg):
 110             io.send_line("NOTICE " + target + " :" + msg)
 111
 112         def url_check(msg):
 113
 114             def handle_url(url, show_url=False):
 115
 116                 def mobile_twitter_hack(url):
 117                     re1 = 'https?://(mobile.twitter.com/)[^/]+(/status/)'
 118                     re2 = 'https?://mobile.twitter.com/([^/]+)/status/' \
 119                         + '([^\?/]+)'
 120                     m = re.search(re1, url)
 121                     if m and m.group(1) == 'mobile.twitter.com/' \
 122                             and m.group(2) == '/status/':
 123                         m = re.search(re2, url)
 124                         url = 'https://twitter.com/' + m.group(1) + '/status/' \
 125                                 + m.group(2)
 126                         handle_url(url, True)
 127                         return True
 128
 129                 try:
 130                     r = requests.get(url, timeout=15)
 131                 except (requests.exceptions.TooManyRedirects,
 132                         requests.exceptions.ConnectionError,
 133                         requests.exceptions.InvalidURL,
 134                         requests.exceptions.InvalidSchema) as error:
 135                     notice("TROUBLE FOLLOWING URL: " + str(error))
 136                     return
 137                 if mobile_twitter_hack(url):
 138                     return
 139                 title = bs4.BeautifulSoup(r.text).title
 140                 if title:
 141                     prefix = "PAGE TITLE: "
 142                     if show_url:
 143                         prefix = "PAGE TITLE FOR <" + url + ">: "
 144                     notice(prefix + title.string.strip())
 145                 else:
 146                     notice("PAGE HAS NO TITLE TAG")
 147
 148             matches = re.findall("(https?://[^\s>]+)", msg)
 149             for i in range(len(matches)):
 150                 handle_url(matches[i])
 151
 152         def command_check(msg):
 153             if msg[0] != "!":
 154                 return
 155             tokens = msg[1:].split()
 156             hash_string = hashlib.md5(target.encode("utf-8")).hexdigest()
 157             quotesfile_name = "quotes_" + hash_string
 158             if tokens[0] == "addquote":
 159                 if not os.access(quotesfile_name, os.F_OK):
 160                     quotesfile = open(quotesfile_name, "w")
 161                     quotesfile.write("QUOTES FOR " + target + ":\n")
 162                     quotesfile.close()
 163                 quotesfile = open(quotesfile_name, "a")
 164                 quotesfile.write(str.join(" ", tokens[1:]) + "\n")
 165                 quotesfile.close()
 166                 quotesfile = open(quotesfile_name, "r")
 167                 lines = quotesfile.readlines()
 168                 quotesfile.close()
 169                 notice("ADDED QUOTE #" + str(len(lines) - 1))
 170             elif tokens[0] == "quote":
 171                 if (len(tokens) > 2 and tokens[1] != "search") or \
 172                     (len(tokens) < 3 and tokens[1] == "search") or \
 173                     (len(tokens) == 2 and not tokens[1].isdigit()):
 174                     notice("SYNTAX: !quote [int] OR !quote search QUERY")
 175                     notice("QUERY may be a boolean grouping of quoted or "\
 176                         + "unquoted search terms, examples:")
 177                     notice("!quote search foo")
 178                     notice("!quote search foo AND (bar OR NOT baz)")
 179                     notice("!quote search \"foo\\\"bar\" AND "\
 180                             + "('NOT\"' AND \"'foo'\" OR 'bar\\'baz')")
 181                     return
 182                 if not os.access(quotesfile_name, os.F_OK):
 183                     notice("NO QUOTES AVAILABLE")
 184                     return
 185                 quotesfile = open(quotesfile_name, "r")
 186                 lines = quotesfile.readlines()
 187                 quotesfile.close()
 188                 lines = lines[1:]
 189                 if len(tokens) == 2:
 190                     i = int(tokens[1])
 191                     if i == 0 or i > len(lines):
 192                         notice("THERE'S NO QUOTE OF THAT INDEX")
 193                         return
 194                     i = i - 1
 195                 elif len(tokens) > 2:
 196                     query = str.join(" ", tokens[2:])
 197                     try:
 198                         results = plomsearch.search(query, lines)
 199                     except plomsearch.LogicParserError as err:
 200                         notice("FAILED QUERY PARSING: " + str(err))
 201                         return
 202                     if len(results) == 0:
 203                         notice("NO QUOTES MATCHING QUERY")
 204                     else:
 205                         for result in results:
 206                             notice("QUOTE #" + str(result[0] + 1) + " : "
 207                                 + result[1])
 208                     return
 209                 else:
 210                     i = random.randrange(len(lines))
 211                 notice("QUOTE #" + str(i + 1) + ": " + lines[i])
 212
 213         sender = ""
 214         for rune in tokens[0]:
 215             if rune == "!":
 216                 break
 217             if rune != ":":
 218                 sender += rune
 219         receiver = ""
 220         for rune in tokens[2]:
 221             if rune == "!":
 222                 break
 223             if rune != ":":
 224                 receiver += rune
 225         target = sender
 226         if receiver != nickname:
 227             target = receiver
 228         msg = str.join(" ", tokens[3:])[1:]
 229         command_check(msg)
 230         url_check(msg)
 231
 232     while True:
 233         line = io.recv_line()
 234         if not line:
 235             continue
 236         tokens = line.split(" ")
 237         if len(tokens) > 1:
 238             if tokens[1] == "PRIVMSG":
 239                 act_on_privmsg(tokens)
 240             if tokens[0] == "PING":
 241                 io.send_line("PONG " + tokens[1])
 242
 243
 244 def parse_command_line_arguments():
 245     parser = argparse.ArgumentParser()
 246     parser.add_argument("-s, --server", action="store", dest="server",
 247                         default=SERVER,
 248                         help="server or server net to connect to (default: "
 249                         + SERVER + ")")
 250     parser.add_argument("-p, --port", action="store", dest="port", type=int,
 251                         default=PORT, help="port to connect to (default : "
 252                         + str(PORT) + ")")
 253     parser.add_argument("-t, --timeout", action="store", dest="timeout",
 254                         type=int, default=TIMEOUT,
 255                         help="timeout in seconds after which to attempt " +
 256                         "reconnect (default: " + str(TIMEOUT) + ")")
 257     parser.add_argument("-u, --username", action="store", dest="username",
 258                         default=USERNAME, help="username to use (default: "
 259                         + USERNAME + ")")
 260     parser.add_argument("-n, --nickname", action="store", dest="nickname",
 261                         default=NICKNAME, help="nickname to use (default: "
 262                         + NICKNAME + ")")
 263     parser.add_argument("CHANNEL", action="store", help="channel to join")
 264     opts, unknown = parser.parse_known_args()
 265     return opts
 266
 267 opts = parse_command_line_arguments()
 268 while True:
 269     try:
 270         io = init_session(opts.server, opts.port, opts.timeout, opts.nickname,
 271                           opts.username, opts.CHANNEL)
 272         lineparser_loop(io, opts.nickname)
 273     except ExceptionForRestart:
 274         io.socket.close()
 275         continue