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