#! /usr/bin/env python # Hey, Emacs! This is -*-python-*-. # # Copyright (C) 2003-2017 Joel Rosdahl # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 # USA # # Joel Rosdahl import logging import os import re import select import socket import string import sys import tempfile import time from datetime import datetime from logging.handlers import RotatingFileHandler from optparse import OptionParser VERSION = "1.2.1" PY3 = sys.version_info[0] >= 3 if PY3: def buffer_to_socket(msg): return msg.encode() def socket_to_buffer(buf): return buf.decode(errors="ignore") else: def buffer_to_socket(msg): return msg def socket_to_buffer(buf): return buf def create_directory(path): if not os.path.isdir(path): os.makedirs(path) class Channel(object): def __init__(self, server, name): self.server = server self.name = name self.members = set() self._topic = "" self._key = None if self.server.state_dir: self._state_path = "%s/%s" % ( self.server.state_dir, name.replace("_", "__").replace("/", "_")) self._read_state() else: self._state_path = None def add_member(self, client): self.members.add(client) def get_topic(self): return self._topic def set_topic(self, value): self._topic = value self._write_state() topic = property(get_topic, set_topic) def get_key(self): return self._key def set_key(self, value): self._key = value self._write_state() key = property(get_key, set_key) def remove_client(self, client): self.members.discard(client) if not self.members: self.server.remove_channel(self) def _read_state(self): if not (self._state_path and os.path.exists(self._state_path)): return data = {} with open(self._state_path, "rb") as state_file: exec(state_file.read(), {}, data) self._topic = data.get("topic", "") self._key = data.get("key") def _write_state(self): if not self._state_path: return (fd, path) = tempfile.mkstemp(dir=os.path.dirname(self._state_path)) fp = os.fdopen(fd, "w") fp.write("topic = %r\n" % self.topic) fp.write("key = %r\n" % self.key) fp.close() os.rename(path, self._state_path) class Client(object): __linesep_regexp = re.compile(r"\r?\n") # The RFC limit for nicknames is 9 characters, but what the heck. __valid_nickname_regexp = re.compile( r"^[][\`_^{|}A-Za-z][][\`_^{|}A-Za-z0-9-]{0,50}$") __valid_channelname_regexp = re.compile( r"^[&#+!][^\x00\x07\x0a\x0d ,:]{0,50}$") def __init__(self, server, socket): self.server = server self.socket = socket self.channels = {} # irc_lower(Channel name) --> Channel self.nickname = None self.user = None self.realname = None if self.server.ipv6: (self.host, self.port, _, _) = socket.getpeername() else: (self.host, self.port) = socket.getpeername() self.__timestamp = time.time() self.__readbuffer = "" self.__writebuffer = "" self.__sent_ping = False if self.server.password: self.__handle_command = self.__pass_handler else: self.__handle_command = self.__registration_handler def get_prefix(self): return "%s!%s@%s" % (self.nickname, self.user, self.host) prefix = property(get_prefix) def check_aliveness(self): now = time.time() if self.__timestamp + 180 < now: self.disconnect("ping timeout") return if not self.__sent_ping and self.__timestamp + 90 < now: if self.__handle_command == self.__command_handler: # Registered. self.message("PING :%s" % self.server.name) self.__sent_ping = True else: # Not registered. self.disconnect("ping timeout") def write_queue_size(self): return len(self.__writebuffer) def __parse_read_buffer(self): lines = self.__linesep_regexp.split(self.__readbuffer) self.__readbuffer = lines[-1] lines = lines[:-1] for line in lines: if not line: # Empty line. Ignore. continue x = line.split(" ", 1) command = x[0].upper() if len(x) == 1: arguments = [] else: if len(x[1]) > 0 and x[1][0] == ":": arguments = [x[1][1:]] else: y = x[1].split(" :", 1) arguments = y[0].split() if len(y) == 2: arguments.append(y[1]) self.__handle_command(command, arguments) def __pass_handler(self, command, arguments): server = self.server if command == "PASS": if len(arguments) == 0: self.reply_461("PASS") else: if arguments[0].lower() == server.password: self.__handle_command = self.__registration_handler else: self.reply("464 :Password incorrect") elif command == "QUIT": self.disconnect("Client quit") return def __registration_handler(self, command, arguments): server = self.server if command == "NICK": if len(arguments) < 1: self.reply("431 :No nickname given") return nick = arguments[0] if server.get_client(nick): self.reply("433 * %s :Nickname is already in use" % nick) elif not self.__valid_nickname_regexp.match(nick): self.reply("432 * %s :Erroneous nickname" % nick) else: self.nickname = nick server.client_changed_nickname(self, None) elif command == "USER": if len(arguments) < 4: self.reply_461("USER") return self.user = arguments[0] self.realname = arguments[3] elif command == "QUIT": self.disconnect("Client quit") return if self.nickname and self.user: self.reply("001 %s :Hi, welcome to IRC" % self.nickname) self.reply("002 %s :Your host is %s, running version miniircd-%s" % (self.nickname, server.name, VERSION)) self.reply("003 %s :This server was created sometime" % self.nickname) self.reply("004 %s %s miniircd-%s o o" % (self.nickname, server.name, VERSION)) self.send_lusers() self.send_motd() self.__handle_command = self.__command_handler def __send_names(self, arguments, for_join=False): server = self.server valid_channel_re = self.__valid_channelname_regexp if len(arguments) > 0: channelnames = arguments[0].split(",") else: channelnames = sorted(self.channels.keys()) if len(arguments) > 1: keys = arguments[1].split(",") else: keys = [] keys.extend((len(channelnames) - len(keys)) * [None]) for (i, channelname) in enumerate(channelnames): if for_join and irc_lower(channelname) in self.channels: continue if not valid_channel_re.match(channelname): self.reply_403(channelname) continue channel = server.get_channel(channelname) if channel.key is not None and channel.key != keys[i]: self.reply( "475 %s %s :Cannot join channel (+k) - bad key" % (self.nickname, channelname)) continue if for_join: channel.add_member(self) self.channels[irc_lower(channelname)] = channel self.message_channel(channel, "JOIN", channelname, True) self.channel_log(channel, "joined", meta=True) if channel.topic: self.reply("332 %s %s :%s" % (self.nickname, channel.name, channel.topic)) else: self.reply("331 %s %s :No topic is set" % (self.nickname, channel.name)) names_prefix = "353 %s = %s :" % (self.nickname, channelname) names = "" # Max length: reply prefix ":server_name(space)" plus CRLF in # the end. names_max_len = 512 - (len(server.name) + 2 + 2) for name in sorted(x.nickname for x in channel.members): if not names: names = names_prefix + name # Using >= to include the space between "names" and "name". elif len(names) + len(name) >= names_max_len: self.reply(names) names = names_prefix + name else: names += " " + name if names: self.reply(names) self.reply("366 %s %s :End of NAMES list" % (self.nickname, channelname)) def __command_handler(self, command, arguments): def away_handler(): pass def ison_handler(): if len(arguments) < 1: self.reply_461("ISON") return nicks = arguments online = [n for n in nicks if server.get_client(n)] self.reply("303 %s :%s" % (self.nickname, " ".join(online))) def join_handler(): if len(arguments) < 1: self.reply_461("JOIN") return if arguments[0] == "0": for (channelname, channel) in self.channels.items(): self.message_channel(channel, "PART", channelname, True) self.channel_log(channel, "left", meta=True) server.remove_member_from_channel(self, channelname) self.channels = {} return self.__send_names(arguments, for_join=True) def list_handler(): if len(arguments) < 1: channels = server.channels.values() else: channels = [] for channelname in arguments[0].split(","): if server.has_channel(channelname): channels.append(server.get_channel(channelname)) sorted_channels = sorted(channels, key=lambda x: x.name) for channel in sorted_channels: self.reply("322 %s %s %d :%s" % (self.nickname, channel.name, len(channel.members), channel.topic)) self.reply("323 %s :End of LIST" % self.nickname) def lusers_handler(): self.send_lusers() def mode_handler(): if len(arguments) < 1: self.reply_461("MODE") return targetname = arguments[0] if server.has_channel(targetname): channel = server.get_channel(targetname) if len(arguments) < 2: if channel.key: modes = "+k" if irc_lower(channel.name) in self.channels: modes += " %s" % channel.key else: modes = "+" self.reply("324 %s %s %s" % (self.nickname, targetname, modes)) return flag = arguments[1] if flag == "+k": if len(arguments) < 3: self.reply_461("MODE") return key = arguments[2] if irc_lower(channel.name) in self.channels: channel.key = key self.message_channel( channel, "MODE", "%s +k %s" % (channel.name, key), True) self.channel_log( channel, "set channel key to %s" % key, meta=True) else: self.reply("442 %s :You're not on that channel" % targetname) elif flag == "-k": if irc_lower(channel.name) in self.channels: channel.key = None self.message_channel( channel, "MODE", "%s -k" % channel.name, True) self.channel_log( channel, "removed channel key", meta=True) else: self.reply("442 %s :You're not on that channel" % targetname) else: self.reply("472 %s %s :Unknown MODE flag" % (self.nickname, flag)) elif targetname == self.nickname: if len(arguments) == 1: self.reply("221 %s +" % self.nickname) else: self.reply("501 %s :Unknown MODE flag" % self.nickname) else: self.reply_403(targetname) def motd_handler(): self.send_motd() def names_handler(): self.__send_names(arguments) def nick_handler(): if len(arguments) < 1: self.reply("431 :No nickname given") return newnick = arguments[0] client = server.get_client(newnick) if newnick == self.nickname: pass elif client and client is not self: self.reply("433 %s %s :Nickname is already in use" % (self.nickname, newnick)) elif not self.__valid_nickname_regexp.match(newnick): self.reply("432 %s %s :Erroneous Nickname" % (self.nickname, newnick)) else: for x in self.channels.values(): self.channel_log( x, "changed nickname to %s" % newnick, meta=True) oldnickname = self.nickname self.nickname = newnick server.client_changed_nickname(self, oldnickname) self.message_related( ":%s!%s@%s NICK %s" % (oldnickname, self.user, self.host, self.nickname), True) def notice_and_privmsg_handler(): if len(arguments) == 0: self.reply("411 %s :No recipient given (%s)" % (self.nickname, command)) return if len(arguments) == 1: self.reply("412 %s :No text to send" % self.nickname) return targetname = arguments[0] message = arguments[1] client = server.get_client(targetname) if client: client.message(":%s %s %s :%s" % (self.prefix, command, targetname, message)) elif server.has_channel(targetname): channel = server.get_channel(targetname) self.message_channel( channel, command, "%s :%s" % (channel.name, message)) self.channel_log(channel, message) else: self.reply("401 %s %s :No such nick/channel" % (self.nickname, targetname)) def part_handler(): if len(arguments) < 1: self.reply_461("PART") return if len(arguments) > 1: partmsg = arguments[1] else: partmsg = self.nickname for channelname in arguments[0].split(","): if not valid_channel_re.match(channelname): self.reply_403(channelname) elif not irc_lower(channelname) in self.channels: self.reply("442 %s %s :You're not on that channel" % (self.nickname, channelname)) else: channel = self.channels[irc_lower(channelname)] self.message_channel( channel, "PART", "%s :%s" % (channelname, partmsg), True) self.channel_log(channel, "left (%s)" % partmsg, meta=True) del self.channels[irc_lower(channelname)] server.remove_member_from_channel(self, channelname) def ping_handler(): if len(arguments) < 1: self.reply("409 %s :No origin specified" % self.nickname) return self.reply("PONG %s :%s" % (server.name, arguments[0])) def pong_handler(): pass def quit_handler(): if len(arguments) < 1: quitmsg = self.nickname else: quitmsg = arguments[0] self.disconnect(quitmsg) def topic_handler(): if len(arguments) < 1: self.reply_461("TOPIC") return channelname = arguments[0] channel = self.channels.get(irc_lower(channelname)) if channel: if len(arguments) > 1: newtopic = arguments[1] channel.topic = newtopic self.message_channel( channel, "TOPIC", "%s :%s" % (channelname, newtopic), True) self.channel_log( channel, "set topic to %r" % newtopic, meta=True) else: if channel.topic: self.reply("332 %s %s :%s" % (self.nickname, channel.name, channel.topic)) else: self.reply("331 %s %s :No topic is set" % (self.nickname, channel.name)) else: self.reply("442 %s :You're not on that channel" % channelname) def wallops_handler(): if len(arguments) < 1: self.reply_461("WALLOPS") return message = arguments[0] for client in server.clients.values(): client.message(":%s NOTICE %s :Global notice: %s" % (self.prefix, client.nickname, message)) def who_handler(): if len(arguments) < 1: return targetname = arguments[0] if server.has_channel(targetname): channel = server.get_channel(targetname) for member in channel.members: self.reply("352 %s %s %s %s %s %s H :0 %s" % (self.nickname, targetname, member.user, member.host, server.name, member.nickname, member.realname)) self.reply("315 %s %s :End of WHO list" % (self.nickname, targetname)) def whois_handler(): if len(arguments) < 1: return username = arguments[0] user = server.get_client(username) if user: self.reply("311 %s %s %s %s * :%s" % (self.nickname, user.nickname, user.user, user.host, user.realname)) self.reply("312 %s %s %s :%s" % (self.nickname, user.nickname, server.name, server.name)) self.reply("319 %s %s :%s" % (self.nickname, user.nickname, " ".join(user.channels))) self.reply("318 %s %s :End of WHOIS list" % (self.nickname, user.nickname)) else: self.reply("401 %s %s :No such nick" % (self.nickname, username)) handler_table = { "AWAY": away_handler, "ISON": ison_handler, "JOIN": join_handler, "LIST": list_handler, "LUSERS": lusers_handler, "MODE": mode_handler, "MOTD": motd_handler, "NAMES": names_handler, "NICK": nick_handler, "NOTICE": notice_and_privmsg_handler, "PART": part_handler, "PING": ping_handler, "PONG": pong_handler, "PRIVMSG": notice_and_privmsg_handler, "QUIT": quit_handler, "TOPIC": topic_handler, "WALLOPS": wallops_handler, "WHO": who_handler, "WHOIS": whois_handler, } server = self.server valid_channel_re = self.__valid_channelname_regexp try: handler_table[command]() except KeyError: self.reply("421 %s %s :Unknown command" % (self.nickname, command)) def socket_readable_notification(self): try: data = self.socket.recv(2 ** 10) self.server.print_debug( "[%s:%d] -> %r" % (self.host, self.port, data)) quitmsg = "EOT" except socket.error as x: data = "" quitmsg = x if data: self.__readbuffer += socket_to_buffer(data) self.__parse_read_buffer() self.__timestamp = time.time() self.__sent_ping = False else: self.disconnect(quitmsg) def socket_writable_notification(self): try: sent = self.socket.send(buffer_to_socket(self.__writebuffer)) self.server.print_debug( "[%s:%d] <- %r" % ( self.host, self.port, self.__writebuffer[:sent])) self.__writebuffer = self.__writebuffer[sent:] except socket.error as x: self.disconnect(x) def disconnect(self, quitmsg): self.message("ERROR :%s" % quitmsg) self.server.print_info( "Disconnected connection from %s:%s (%s)." % ( self.host, self.port, quitmsg)) self.socket.close() self.server.remove_client(self, quitmsg) def message(self, msg): self.__writebuffer += msg + "\r\n" def reply(self, msg): self.message(":%s %s" % (self.server.name, msg)) def reply_403(self, channel): self.reply("403 %s %s :No such channel" % (self.nickname, channel)) def reply_461(self, command): nickname = self.nickname or "*" self.reply("461 %s %s :Not enough parameters" % (nickname, command)) def message_channel(self, channel, command, message, include_self=False): line = ":%s %s %s" % (self.prefix, command, message) for client in channel.members: if client != self or include_self: client.message(line) def channel_log(self, channel, message, meta=False): if not self.server.channel_log_dir: return if meta: format = "[%s] * %s %s\n" else: format = "[%s] <%s> %s\n" timestamp = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC") logname = channel.name.replace("_", "__").replace("/", "_") fp = open("%s/%s.log" % (self.server.channel_log_dir, logname), "a") fp.write(format % (timestamp, self.nickname, message)) fp.close() def message_related(self, msg, include_self=False): clients = set() if include_self: clients.add(self) for channel in self.channels.values(): clients |= channel.members if not include_self: clients.discard(self) for client in clients: client.message(msg) def send_lusers(self): self.reply("251 %s :There are %d users and 0 services on 1 server" % (self.nickname, len(self.server.clients))) def send_motd(self): server = self.server motdlines = server.get_motd_lines() if motdlines: self.reply("375 %s :- %s Message of the day -" % (self.nickname, server.name)) for line in motdlines: self.reply("372 %s :- %s" % (self.nickname, line.rstrip())) self.reply("376 %s :End of /MOTD command" % self.nickname) else: self.reply("422 %s :MOTD File is missing" % self.nickname) class Server(object): def __init__(self, options): self.alive = True self.serversockets = [] self.ports = options.ports self.password = options.password self.ssl_pem_file = options.ssl_pem_file self.motdfile = options.motd self.verbose = options.verbose self.ipv6 = options.ipv6 self.debug = options.debug self.channel_log_dir = options.channel_log_dir self.chroot = options.chroot self.setuid = options.setuid self.state_dir = options.state_dir self.log_file = options.log_file self.log_max_bytes = options.log_max_size * 1024 * 1024 self.log_count = options.log_count self.logger = None if options.password_file: with open(options.password_file, "r") as fp: self.password = fp.read().strip("\n") if self.ssl_pem_file: self.ssl = __import__("ssl") # Find certificate after daemonization if path is relative: if self.ssl_pem_file and os.path.exists(self.ssl_pem_file): self.ssl_pem_file = os.path.abspath(self.ssl_pem_file) # else: might exist in the chroot jail, so just continue if options.listen and self.ipv6: self.address = socket.getaddrinfo( options.listen, None, proto=socket.IPPROTO_TCP)[0][4][0] elif options.listen: self.address = socket.gethostbyname(options.listen) else: self.address = "" server_name_limit = 63 # From the RFC. self.name = socket.getfqdn(self.address)[:server_name_limit] self.channels = {} # irc_lower(Channel name) --> Channel instance. self.clients = {} # Socket --> Client instance. self.nicknames = {} # irc_lower(Nickname) --> Client instance. if self.channel_log_dir: create_directory(self.channel_log_dir) if self.state_dir: create_directory(self.state_dir) def make_pid_file(self, filename): try: fd = os.open(filename, os.O_RDWR | os.O_CREAT | os.O_EXCL, 0o644) os.write(fd, "%i\n" % os.getpid()) os.close(fd) except: self.print_error("Could not create PID file %r" % filename) sys.exit(1) def daemonize(self): try: pid = os.fork() if pid > 0: sys.exit(0) except OSError: sys.exit(1) os.setsid() try: pid = os.fork() if pid > 0: self.print_info("PID: %d" % pid) sys.exit(0) except OSError: sys.exit(1) os.chdir("/") os.umask(0) dev_null = open("/dev/null", "r+") os.dup2(dev_null.fileno(), sys.stdout.fileno()) os.dup2(dev_null.fileno(), sys.stderr.fileno()) os.dup2(dev_null.fileno(), sys.stdin.fileno()) def get_client(self, nickname): return self.nicknames.get(irc_lower(nickname)) def has_channel(self, name): return irc_lower(name) in self.channels def get_channel(self, channelname): if irc_lower(channelname) in self.channels: channel = self.channels[irc_lower(channelname)] else: channel = Channel(self, channelname) self.channels[irc_lower(channelname)] = channel return channel def get_motd_lines(self): if self.motdfile: try: return open(self.motdfile).readlines() except IOError: return ["Could not read MOTD file %r." % self.motdfile] else: return [] def print_info(self, msg): if self.verbose: print(msg) sys.stdout.flush() if self.logger: self.logger.info(msg) def print_debug(self, msg): if self.debug: print(msg) sys.stdout.flush() if self.logger: self.logger.debug(msg) def print_error(self, msg): sys.stderr.write("%s\n" % msg) if self.logger: self.logger.error(msg) def client_changed_nickname(self, client, oldnickname): if oldnickname: del self.nicknames[irc_lower(oldnickname)] self.nicknames[irc_lower(client.nickname)] = client def remove_member_from_channel(self, client, channelname): if irc_lower(channelname) in self.channels: channel = self.channels[irc_lower(channelname)] channel.remove_client(client) def remove_client(self, client, quitmsg): client.message_related(":%s QUIT :%s" % (client.prefix, quitmsg)) for x in client.channels.values(): client.channel_log(x, "quit (%s)" % quitmsg, meta=True) x.remove_client(client) if client.nickname \ and irc_lower(client.nickname) in self.nicknames: del self.nicknames[irc_lower(client.nickname)] del self.clients[client.socket] def remove_channel(self, channel): del self.channels[irc_lower(channel.name)] def start(self): for port in self.ports: s = socket.socket(socket.AF_INET6 if self.ipv6 else socket.AF_INET, socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) try: s.bind((self.address, port)) except socket.error as e: self.print_error("Could not bind port %s: %s." % (port, e)) sys.exit(1) s.listen(5) self.serversockets.append(s) del s self.print_info("Listening on port %d." % port) if self.chroot: os.chdir(self.chroot) os.chroot(self.chroot) self.print_info("Changed root directory to %s" % self.chroot) if self.setuid: os.setgid(self.setuid[1]) os.setuid(self.setuid[0]) self.print_info("Setting uid:gid to %s:%s" % (self.setuid[0], self.setuid[1])) self.init_logging() try: self.run() except: if self.logger: self.logger.exception("Fatal exception") raise def stop(self): self.alive = False for s in self.serversockets + [x.socket for x in self.clients.values()]: try: s.shutdown(socket.SHUT_RDWR) s.close() except OSError: pass def init_logging(self): if not self.log_file: return log_level = logging.INFO if self.debug: log_level = logging.DEBUG self.logger = logging.getLogger("miniircd") formatter = logging.Formatter( ("%(asctime)s - %(name)s[%(process)d] - " "%(levelname)s - %(message)s")) fh = RotatingFileHandler( self.log_file, maxBytes=self.log_max_bytes, backupCount=self.log_count) fh.setLevel(log_level) fh.setFormatter(formatter) self.logger.setLevel(log_level) self.logger.addHandler(fh) def run(self): last_aliveness_check = time.time() while self.alive: (iwtd, owtd, ewtd) = select.select( self.serversockets + [x.socket for x in self.clients.values()], [x.socket for x in self.clients.values() if x.write_queue_size() > 0], [], 10) for x in iwtd: if x in self.clients: self.clients[x].socket_readable_notification() else: try: (conn, addr) = x.accept() except OSError: # Socket likely closed break if self.ssl_pem_file: try: conn = self.ssl.wrap_socket( conn, server_side=True, certfile=self.ssl_pem_file, keyfile=self.ssl_pem_file) except Exception as e: self.print_error( "SSL error for connection from %s:%s: %s" % ( addr[0], addr[1], e)) continue try: self.clients[conn] = Client(self, conn) self.print_info("Accepted connection from %s:%s." % ( addr[0], addr[1])) except socket.error as e: try: conn.close() except: pass for x in owtd: if x in self.clients: # client may have been disconnected self.clients[x].socket_writable_notification() now = time.time() if last_aliveness_check + 10 < now: for client in list(self.clients.values()): client.check_aliveness() last_aliveness_check = now _maketrans = str.maketrans if PY3 else string.maketrans _ircstring_translation = _maketrans( string.ascii_lowercase.upper() + "[]\\^", string.ascii_lowercase + "{}|~") def irc_lower(s): return s.translate(_ircstring_translation) def main(argv): op = OptionParser( version=VERSION, description="miniircd is a small and limited IRC server.") op.add_option( "--channel-log-dir", metavar="X", help="store channel log in directory X") op.add_option( "-d", "--daemon", action="store_true", help="fork and become a daemon") op.add_option( "--ipv6", action="store_true", help="use IPv6") op.add_option( "--debug", action="store_true", help="print debug messages to stdout") op.add_option( "--listen", metavar="X", help="listen on specific IP address X") op.add_option( "--log-count", metavar="X", default=10, type="int", help="keep X log files; default: %default") op.add_option( "--log-file", metavar="X", help="store log in file X") op.add_option( "--log-max-size", metavar="X", default=10, type="int", help="set maximum log file size to X MiB; default: %default MiB") op.add_option( "--motd", metavar="X", help="display file X as message of the day") op.add_option( "--pid-file", metavar="X", help="write PID to file X") op.add_option( "-p", "--password", metavar="X", help="require connection password X; default: no password") op.add_option( "--password-file", metavar="X", help=("require connection password stored in file X;" " default: no password")) op.add_option( "--ports", metavar="X", help="listen to ports X (a list separated by comma or whitespace);" " default: 6667 or 6697 if SSL is enabled") op.add_option( "-s", "--ssl-pem-file", metavar="FILE", help="enable SSL and use FILE as the .pem certificate+key") op.add_option( "--state-dir", metavar="X", help="save persistent channel state (topic, key) in directory X") op.add_option( "--verbose", action="store_true", help="be verbose (print some progress messages to stdout)") if os.name == "posix": op.add_option( "--chroot", metavar="X", help="change filesystem root to directory X after startup" " (requires root)") op.add_option( "--setuid", metavar="U[:G]", help="change process user (and optionally group) after startup" " (requires root)") (options, args) = op.parse_args(argv[1:]) if os.name != "posix": options.chroot = False options.setuid = False if options.debug: options.verbose = True if options.ports is None: if options.ssl_pem_file is None: options.ports = "6667" else: options.ports = "6697" if options.chroot and os.getuid() != 0: op.error("Must be root to use --chroot") if options.setuid: from pwd import getpwnam from grp import getgrnam if os.getuid() != 0: op.error("Must be root to use --setuid") matches = options.setuid.split(":") if len(matches) == 2: options.setuid = (getpwnam(matches[0]).pw_uid, getgrnam(matches[1]).gr_gid) elif len(matches) == 1: options.setuid = (getpwnam(matches[0]).pw_uid, getpwnam(matches[0]).pw_gid) else: op.error("Specify a user, or user and group separated by a colon," " e.g. --setuid daemon, --setuid nobody:nobody") if os.name == "posix" and not options.setuid \ and (os.getuid() == 0 or os.getgid() == 0): op.error("Running this service as root is not recommended. Use the" " --setuid option to switch to an unprivileged account after" " startup. If you really intend to run as root, use" " \"--setuid root\".") ports = [] for port in re.split(r"[,\s]+", options.ports): try: ports.append(int(port)) except ValueError: op.error("bad port: %r" % port) options.ports = ports server = Server(options) if options.daemon: server.daemonize() if options.pid_file: server.make_pid_file(options.pid_file) try: server.start() except KeyboardInterrupt: server.print_error("Interrupted.") if __name__ == '__main__': main(sys.argv)