Below is an updated version of the IRC emulator using UDP for links between servers that I published recently. In this update:
- A new name: alcuin
- Refactored into multiple files for ease of reading
- Messages are now sent between servers with hashes attached so that garbage messages can be easily discarded
- Apparently JOIN/PART messages are actually supported, your server just has to be running in time to catch them
- Added a perfunctory amount of documentation in README.txt
| 1 | diff --git a/Makefile b/Makefile |
| 2 | new file mode 100644 |
| 3 | index 0000000..1db3ff4 |
| 4 | |
| 5 | |
| 6 | |
| 7 | +VERSION := $(shell sed -ne 's/^VERSION = "\(.*\)"/\1/p' lib/server.py) |
| 8 | + |
| 9 | +DISTFILES = alcuin config.py.example README.txt lib |
| 10 | + |
| 11 | +all: |
| 12 | + echo "Nothing to do." |
| 13 | + |
| 14 | +dist: |
| 15 | + mkdir alcuin-$(VERSION) |
| 16 | + cp -r $(DISTFILES) alcuin-$(VERSION) |
| 17 | + tar cvzf alcuin-$(VERSION).tar.gz alcuin-$(VERSION) |
| 18 | + rm -rf alcuin-$(VERSION) |
| 19 | + |
| 20 | +clean: |
| 21 | + rm -rf genesis.vdiff genesis.vdiff.escaped alcuin-$(VERSION) |
| 22 | + find . -name "*.swp" -delete |
| 23 | + find . -name "*.pyc" -delete |
| 24 | + |
| 25 | +genesis: |
| 26 | + git show --pretty="format:" -1 HEAD > genesis.vdiff |
| 27 | + |
| 28 | +escaped-genesis: |
| 29 | + git show --pretty="format:" -1 HEAD | sed 's/&/\&/g; s/</\</g; s/>/\>/g; s/"/\"/g; s/'"'"'/\'/g; s/((/\(\(/g; s/))/\)\)/g; s/\[([0-9])\[/\[$1\[/g; s/]]/\]\]/g' > genesis.vdiff.escaped |
| 30 | diff --git a/README.txt b/README.txt |
| 31 | new file mode 100644 |
| 32 | index 0000000..2d5ff88 |
| 33 | |
| 34 | |
| 35 | |
| 36 | +Alcuin implements an IRC server with a udp client built in |
| 37 | +such that it can connect to other alcuin servers via a |
| 38 | +gossip network. It is a work in progress and much is |
| 39 | +yet to be completed including but not limited to: |
| 40 | + |
| 41 | +- gossip style message forwarding |
| 42 | +- message deduplication |
| 43 | +- symmetric encryption of messages |
| 44 | +- support for broadcasting several important IRC commands |
| 45 | + over the gossip net. |
| 46 | +- mitigation of hash length extension attacks |
| 47 | + |
| 48 | +GETTING STARTED |
| 49 | + |
| 50 | +1. Copy config.py.example to config.py (nothing in the config file is |
| 51 | +used yet, but alcuin will crash if it doesn't exist). |
| 52 | +2. Launch alcuin with something like the following command: |
| 53 | +./alcuin --verbose --port=6668 --peers=206.189.163.145 |
| 54 | + |
| 55 | +NOTES FOR DIFF/PATCH N00B5 |
| 56 | + |
| 57 | +To apply the genesis patch (or any patch) to the current directory |
| 58 | +and recreate the directory structure of the original: |
| 59 | + |
| 60 | +patch -p1 -ruN < <wherever>/genesis.vdiff |
| 61 | diff --git a/alcuin b/alcuin |
| 62 | new file mode 100755 |
| 63 | index 0000000..bbf9ed4 |
| 64 | |
| 65 | |
| 66 | |
| 67 | +#! /usr/bin/env python |
| 68 | + |
| 69 | +import os |
| 70 | +import re |
| 71 | +import select |
| 72 | +import socket |
| 73 | +import string |
| 74 | +import sys |
| 75 | +import tempfile |
| 76 | +import time |
| 77 | +from lib.server import VERSION |
| 78 | +from lib.server import Server |
| 79 | +from lib.peer import Peer |
| 80 | +from datetime import datetime |
| 81 | +from optparse import OptionParser |
| 82 | +import config as cfg |
| 83 | + |
| 84 | + |
| 85 | +def main(argv): |
| 86 | + op = OptionParser( |
| 87 | + version=VERSION, |
| 88 | + description="alcuin is a small and limited IRC server emulator for gossip networks.") |
| 89 | + op.add_option( |
| 90 | + "-d", "--daemon", |
| 91 | + action="store_true", |
| 92 | + help="fork and become a daemon") |
| 93 | + op.add_option( |
| 94 | + "--debug", |
| 95 | + action="store_true", |
| 96 | + help="print debug messages to stdout") |
| 97 | + op.add_option( |
| 98 | + "--listen", |
| 99 | + metavar="X", |
| 100 | + help="listen on specific IP address X") |
| 101 | + op.add_option( |
| 102 | + "--logdir", |
| 103 | + metavar="X", |
| 104 | + help="store channel log in directory X") |
| 105 | + op.add_option( |
| 106 | + "--motd", |
| 107 | + metavar="X", |
| 108 | + help="display file X as message of the day") |
| 109 | + op.add_option( |
| 110 | + "-s", "--ssl-pem-file", |
| 111 | + metavar="FILE", |
| 112 | + help="enable SSL and use FILE as the .pem certificate+key") |
| 113 | + op.add_option( |
| 114 | + "-p", "--password", |
| 115 | + metavar="X", |
| 116 | + help="require connection password X; default: no password") |
| 117 | + op.add_option( |
| 118 | + "--ports", |
| 119 | + metavar="X", |
| 120 | + help="listen to ports X (a list separated by comma or whitespace);" |
| 121 | + " default: 6667 or 6697 if SSL is enabled") |
| 122 | + op.add_option( |
| 123 | + "--udp-port", |
| 124 | + metavar="X", |
| 125 | + help="listen for UDP packets on X;" |
| 126 | + " default: 7778") |
| 127 | + op.add_option( |
| 128 | + "--peers", |
| 129 | + metavar="X", |
| 130 | + help="Broadcast to X (a list of IP addresses separated by comma or whitespace)") |
| 131 | + op.add_option( |
| 132 | + "--statedir", |
| 133 | + metavar="X", |
| 134 | + help="save persistent channel state (topic, key) in directory X") |
| 135 | + op.add_option( |
| 136 | + "--verbose", |
| 137 | + action="store_true", |
| 138 | + help="be verbose (print some progress messages to stdout)") |
| 139 | + if os.name == "posix": |
| 140 | + op.add_option( |
| 141 | + "--chroot", |
| 142 | + metavar="X", |
| 143 | + help="change filesystem root to directory X after startup" |
| 144 | + " (requires root)") |
| 145 | + op.add_option( |
| 146 | + "--setuid", |
| 147 | + metavar="U[:G]", |
| 148 | + help="change process user (and optionally group) after startup" |
| 149 | + " (requires root)") |
| 150 | + |
| 151 | + (options, args) = op.parse_args(argv[1:]) |
| 152 | + if options.debug: |
| 153 | + options.verbose = True |
| 154 | + if options.ports is None: |
| 155 | + if options.ssl_pem_file is None: |
| 156 | + options.ports = "6667" |
| 157 | + else: |
| 158 | + options.ports = "6697" |
| 159 | + if options.peers is None: |
| 160 | + options.peers = "" |
| 161 | + if options.udp_port is None: |
| 162 | + options.udp_port = 7778 |
| 163 | + else: |
| 164 | + options.udp_port = int(options.udp_port) |
| 165 | + if options.chroot: |
| 166 | + if os.getuid() != 0: |
| 167 | + op.error("Must be root to use --chroot") |
| 168 | + if options.setuid: |
| 169 | + from pwd import getpwnam |
| 170 | + from grp import getgrnam |
| 171 | + if os.getuid() != 0: |
| 172 | + op.error("Must be root to use --setuid") |
| 173 | + matches = options.setuid.split(":") |
| 174 | + if len(matches) == 2: |
| 175 | + options.setuid = (getpwnam(matches[0]).pw_uid, |
| 176 | + getgrnam(matches[1]).gr_gid) |
| 177 | + elif len(matches) == 1: |
| 178 | + options.setuid = (getpwnam(matches[0]).pw_uid, |
| 179 | + getpwnam(matches[0]).pw_gid) |
| 180 | + else: |
| 181 | + op.error("Specify a user, or user and group separated by a colon," |
| 182 | + " e.g. --setuid daemon, --setuid nobody:nobody") |
| 183 | + if (os.getuid() == 0 or os.getgid() == 0) and not options.setuid: |
| 184 | + op.error("Running this service as root is not recommended. Use the" |
| 185 | + " --setuid option to switch to an unprivileged account after" |
| 186 | + " startup. If you really intend to run as root, use" |
| 187 | + " \"--setuid root\".") |
| 188 | + |
| 189 | + ports = [] |
| 190 | + for port in re.split(r"[,\s]+", options.ports): |
| 191 | + try: |
| 192 | + ports.append(int(port)) |
| 193 | + except ValueError: |
| 194 | + op.error("bad port: %r" % port) |
| 195 | + options.ports = ports |
| 196 | + peers = [] |
| 197 | + for peer in re.split(r"[,\s]+", options.peers): |
| 198 | + try: |
| 199 | + peers.append(Peer(peer)) |
| 200 | + except ValueError: |
| 201 | + op.error("bad peer ip: %r" % peer) |
| 202 | + options.peers = peers |
| 203 | + server = Server(options) |
| 204 | + if options.daemon: |
| 205 | + server.daemonize() |
| 206 | + try: |
| 207 | + server.start() |
| 208 | + except KeyboardInterrupt: |
| 209 | + server.print_error("Interrupted.") |
| 210 | + |
| 211 | + |
| 212 | +main(sys.argv) |
| 213 | diff --git a/config.py.example b/config.py.example |
| 214 | new file mode 100644 |
| 215 | index 0000000..f9adc62 |
| 216 | |
| 217 | |
| 218 | |
| 219 | +secret = "SEEKRIT" |
| 220 | +peer_secrets = { |
| 221 | + "10.0.0.1":"K33P-0U7!" |
| 222 | +} |
| 223 | diff --git a/lib/__init__.py b/lib/__init__.py |
| 224 | new file mode 100644 |
| 225 | index 0000000..d2e75fb |
| 226 | |
| 227 | |
| 228 | |
| 229 | +# This file can't be empty otherwise diff won't see it. |
| 230 | diff --git a/lib/channel.py b/lib/channel.py |
| 231 | new file mode 100644 |
| 232 | index 0000000..5086804 |
| 233 | |
| 234 | |
| 235 | |
| 236 | +class Channel(object): |
| 237 | + def __init__(self, server, name): |
| 238 | + self.server = server |
| 239 | + self.name = name |
| 240 | + self.members = set() |
| 241 | + self._topic = "" |
| 242 | + self._key = None |
| 243 | + if self.server.statedir: |
| 244 | + self._state_path = "%s/%s" % ( |
| 245 | + self.server.statedir, |
| 246 | + name.replace("_", "__").replace("/", "_")) |
| 247 | + self._read_state() |
| 248 | + else: |
| 249 | + self._state_path = None |
| 250 | + |
| 251 | + def add_member(self, client): |
| 252 | + self.members.add(client) |
| 253 | + |
| 254 | + def get_topic(self): |
| 255 | + return self._topic |
| 256 | + |
| 257 | + def set_topic(self, value): |
| 258 | + self._topic = value |
| 259 | + self._write_state() |
| 260 | + |
| 261 | + topic = property(get_topic, set_topic) |
| 262 | + |
| 263 | + def get_key(self): |
| 264 | + return self._key |
| 265 | + |
| 266 | + def set_key(self, value): |
| 267 | + self._key = value |
| 268 | + self._write_state() |
| 269 | + |
| 270 | + key = property(get_key, set_key) |
| 271 | + |
| 272 | + def remove_client(self, client): |
| 273 | + self.members.discard(client) |
| 274 | + if not self.members: |
| 275 | + self.server.remove_channel(self) |
| 276 | + |
| 277 | + def _read_state(self): |
| 278 | + if not (self._state_path and os.path.exists(self._state_path)): |
| 279 | + return |
| 280 | + data = {} |
| 281 | + exec(open(self._state_path), {}, data) |
| 282 | + self._topic = data.get("topic", "") |
| 283 | + self._key = data.get("key") |
| 284 | + |
| 285 | + def _write_state(self): |
| 286 | + if not self._state_path: |
| 287 | + return |
| 288 | + (fd, path) = tempfile.mkstemp(dir=os.path.dirname(self._state_path)) |
| 289 | + fp = os.fdopen(fd, "w") |
| 290 | + fp.write("topic = %r\n" % self.topic) |
| 291 | + fp.write("key = %r\n" % self.key) |
| 292 | + fp.close() |
| 293 | + os.rename(path, self._state_path) |
| 294 | + |
| 295 | + |
| 296 | diff --git a/lib/client.py b/lib/client.py |
| 297 | new file mode 100644 |
| 298 | index 0000000..cfc5331 |
| 299 | |
| 300 | |
| 301 | |
| 302 | +import time |
| 303 | +import sys |
| 304 | +import re |
| 305 | +import string |
| 306 | +from lib.server import VERSION |
| 307 | +from lib.infosec import Infosec |
| 308 | +from funcs import * |
| 309 | + |
| 310 | +class Client(object): |
| 311 | + __linesep_regexp = re.compile(r"\r?\n") |
| 312 | + # The RFC limit for nicknames is 9 characters, but what the heck. |
| 313 | + __valid_nickname_regexp = re.compile( |
| 314 | + r"^[][\`_^{|}A-Za-z][][\`_^{|}A-Za-z0-9-]{0,50}$") |
| 315 | + __valid_channelname_regexp = re.compile( |
| 316 | + r"^[&#+!][^\x00\x07\x0a\x0d ,:]{0,50}$") |
| 317 | + |
| 318 | + def __init__(self, server, socket): |
| 319 | + self.server = server |
| 320 | + self.socket = socket |
| 321 | + self.channels = {} # irc_lower(Channel name) --> Channel |
| 322 | + self.nickname = None |
| 323 | + self.user = None |
| 324 | + self.realname = None |
| 325 | + (self.host, self.port) = socket.getpeername() |
| 326 | + self.__timestamp = time.time() |
| 327 | + self.__readbuffer = "" |
| 328 | + self.__writebuffer = "" |
| 329 | + self.__sent_ping = False |
| 330 | + self.infosec = Infosec() |
| 331 | + if self.server.password: |
| 332 | + self.__handle_command = self.__pass_handler |
| 333 | + else: |
| 334 | + self.__handle_command = self.__registration_handler |
| 335 | + |
| 336 | + def get_prefix(self): |
| 337 | + return "%s!%s@%s" % (self.nickname, self.user, self.host) |
| 338 | + prefix = property(get_prefix) |
| 339 | + |
| 340 | + def check_aliveness(self): |
| 341 | + now = time.time() |
| 342 | + if self.__timestamp + 180 < now: |
| 343 | + self.disconnect("ping timeout") |
| 344 | + return |
| 345 | + if not self.__sent_ping and self.__timestamp + 90 < now: |
| 346 | + if self.__handle_command == self.__command_handler: |
| 347 | + # Registered. |
| 348 | + self.message("PING :%s" % self.server.name) |
| 349 | + self.__sent_ping = True |
| 350 | + else: |
| 351 | + # Not registered. |
| 352 | + self.disconnect("ping timeout") |
| 353 | + |
| 354 | + def write_queue_size(self): |
| 355 | + return len(self.__writebuffer) |
| 356 | + |
| 357 | + def __parse_read_buffer(self): |
| 358 | + lines = self.__linesep_regexp.split(self.__readbuffer) |
| 359 | + self.__readbuffer = lines[-1] |
| 360 | + lines = lines[:-1] |
| 361 | + for line in lines: |
| 362 | + if not line: |
| 363 | + # Empty line. Ignore. |
| 364 | + continue |
| 365 | + x = line.split(" ", 1) |
| 366 | + command = x[0].upper() |
| 367 | + if len(x) == 1: |
| 368 | + arguments = [] |
| 369 | + else: |
| 370 | + if len(x[1]) > 0 and x[1][0] == ":": |
| 371 | + arguments = [x[1][1:]] |
| 372 | + else: |
| 373 | + y = string.split(x[1], " :", 1) |
| 374 | + arguments = string.split(y[0]) |
| 375 | + if len(y) == 2: |
| 376 | + arguments.append(y[1]) |
| 377 | + self.__handle_command(command, arguments) |
| 378 | + |
| 379 | + def __pass_handler(self, command, arguments): |
| 380 | + server = self.server |
| 381 | + if command == "PASS": |
| 382 | + if len(arguments) == 0: |
| 383 | + self.reply_461("PASS") |
| 384 | + else: |
| 385 | + if arguments[0].lower() == server.password: |
| 386 | + self.__handle_command = self.__registration_handler |
| 387 | + else: |
| 388 | + self.reply("464 :Password incorrect") |
| 389 | + elif command == "QUIT": |
| 390 | + self.disconnect("Client quit") |
| 391 | + return |
| 392 | + |
| 393 | + def __registration_handler(self, command, arguments): |
| 394 | + server = self.server |
| 395 | + if command == "NICK": |
| 396 | + if len(arguments) < 1: |
| 397 | + self.reply("431 :No nickname given") |
| 398 | + return |
| 399 | + nick = arguments[0] |
| 400 | + if server.get_client(nick): |
| 401 | + self.reply("433 * %s :Nickname is already in use" % nick) |
| 402 | + elif not self.__valid_nickname_regexp.match(nick): |
| 403 | + self.reply("432 * %s :Erroneous nickname" % nick) |
| 404 | + else: |
| 405 | + self.nickname = nick |
| 406 | + server.client_changed_nickname(self, None) |
| 407 | + elif command == "USER": |
| 408 | + if len(arguments) < 4: |
| 409 | + self.reply_461("USER") |
| 410 | + return |
| 411 | + self.user = arguments[0] |
| 412 | + self.realname = arguments[3] |
| 413 | + elif command == "QUIT": |
| 414 | + self.disconnect("Client quit") |
| 415 | + return |
| 416 | + if self.nickname and self.user: |
| 417 | + self.reply("001 %s :Hi, welcome to IRC" % self.nickname) |
| 418 | + self.reply("002 %s :Your host is %s, running version miniircd-%s" |
| 419 | + % (self.nickname, server.name, VERSION)) |
| 420 | + self.reply("003 %s :This server was created sometime" |
| 421 | + % self.nickname) |
| 422 | + self.reply("004 %s :%s miniircd-%s o o" |
| 423 | + % (self.nickname, server.name, VERSION)) |
| 424 | + self.send_lusers() |
| 425 | + self.send_motd() |
| 426 | + self.__handle_command = self.__command_handler |
| 427 | + |
| 428 | + def __command_handler(self, command, arguments): |
| 429 | + def away_handler(): |
| 430 | + pass |
| 431 | + |
| 432 | + def ison_handler(): |
| 433 | + if len(arguments) < 1: |
| 434 | + self.reply_461("ISON") |
| 435 | + return |
| 436 | + nicks = arguments |
| 437 | + online = [n for n in nicks if server.get_client(n)] |
| 438 | + self.reply("303 %s :%s" % (self.nickname, " ".join(online))) |
| 439 | + |
| 440 | + def join_handler(): |
| 441 | + if len(arguments) < 1: |
| 442 | + self.reply_461("JOIN") |
| 443 | + return |
| 444 | + if arguments[0] == "0": |
| 445 | + for (channelname, channel) in self.channels.items(): |
| 446 | + self.message_channel(channel, "PART", channelname, True) |
| 447 | + self.channel_log(channel, "left", meta=True) |
| 448 | + server.remove_member_from_channel(self, channelname) |
| 449 | + self.channels = {} |
| 450 | + return |
| 451 | + channelnames = arguments[0].split(",") |
| 452 | + if len(arguments) > 1: |
| 453 | + keys = arguments[1].split(",") |
| 454 | + else: |
| 455 | + keys = [] |
| 456 | + keys.extend((len(channelnames) - len(keys)) * [None]) |
| 457 | + for (i, channelname) in enumerate(channelnames): |
| 458 | + if irc_lower(channelname) in self.channels: |
| 459 | + continue |
| 460 | + if not valid_channel_re.match(channelname): |
| 461 | + self.reply_403(channelname) |
| 462 | + continue |
| 463 | + channel = server.get_channel(channelname) |
| 464 | + if channel.key is not None and channel.key != keys[i]: |
| 465 | + self.reply( |
| 466 | + "475 %s %s :Cannot join channel (+k) - bad key" |
| 467 | + % (self.nickname, channelname)) |
| 468 | + continue |
| 469 | + channel.add_member(self) |
| 470 | + self.channels[irc_lower(channelname)] = channel |
| 471 | + self.message_channel(channel, "JOIN", channelname, True) |
| 472 | + self.channel_log(channel, "joined", meta=True) |
| 473 | + if channel.topic: |
| 474 | + self.reply("332 %s %s :%s" |
| 475 | + % (self.nickname, channel.name, channel.topic)) |
| 476 | + else: |
| 477 | + self.reply("331 %s %s :No topic is set" |
| 478 | + % (self.nickname, channel.name)) |
| 479 | + self.reply("353 %s = %s :%s" |
| 480 | + % (self.nickname, |
| 481 | + channelname, |
| 482 | + " ".join(sorted(x.nickname |
| 483 | + for x in channel.members)))) |
| 484 | + self.reply("366 %s %s :End of NAMES list" |
| 485 | + % (self.nickname, channelname)) |
| 486 | + |
| 487 | + def list_handler(): |
| 488 | + if len(arguments) < 1: |
| 489 | + channels = server.channels.values() |
| 490 | + else: |
| 491 | + channels = [] |
| 492 | + for channelname in arguments[0].split(","): |
| 493 | + if server.has_channel(channelname): |
| 494 | + channels.append(server.get_channel(channelname)) |
| 495 | + channels.sort(key=lambda x: x.name) |
| 496 | + for channel in channels: |
| 497 | + self.reply("322 %s %s %d :%s" |
| 498 | + % (self.nickname, channel.name, |
| 499 | + len(channel.members), channel.topic)) |
| 500 | + self.reply("323 %s :End of LIST" % self.nickname) |
| 501 | + |
| 502 | + def lusers_handler(): |
| 503 | + self.send_lusers() |
| 504 | + |
| 505 | + def mode_handler(): |
| 506 | + if len(arguments) < 1: |
| 507 | + self.reply_461("MODE") |
| 508 | + return |
| 509 | + targetname = arguments[0] |
| 510 | + if server.has_channel(targetname): |
| 511 | + channel = server.get_channel(targetname) |
| 512 | + if len(arguments) < 2: |
| 513 | + if channel.key: |
| 514 | + modes = "+k" |
| 515 | + if irc_lower(channel.name) in self.channels: |
| 516 | + modes += " %s" % channel.key |
| 517 | + else: |
| 518 | + modes = "+" |
| 519 | + self.reply("324 %s %s %s" |
| 520 | + % (self.nickname, targetname, modes)) |
| 521 | + return |
| 522 | + flag = arguments[1] |
| 523 | + if flag == "+k": |
| 524 | + if len(arguments) < 3: |
| 525 | + self.reply_461("MODE") |
| 526 | + return |
| 527 | + key = arguments[2] |
| 528 | + if irc_lower(channel.name) in self.channels: |
| 529 | + channel.key = key |
| 530 | + self.message_channel( |
| 531 | + channel, "MODE", "%s +k %s" % (channel.name, key), |
| 532 | + True) |
| 533 | + self.channel_log( |
| 534 | + channel, "set channel key to %s" % key, meta=True) |
| 535 | + else: |
| 536 | + self.reply("442 %s :You're not on that channel" |
| 537 | + % targetname) |
| 538 | + elif flag == "-k": |
| 539 | + if irc_lower(channel.name) in self.channels: |
| 540 | + channel.key = None |
| 541 | + self.message_channel( |
| 542 | + channel, "MODE", "%s -k" % channel.name, |
| 543 | + True) |
| 544 | + self.channel_log( |
| 545 | + channel, "removed channel key", meta=True) |
| 546 | + else: |
| 547 | + self.reply("442 %s :You're not on that channel" |
| 548 | + % targetname) |
| 549 | + else: |
| 550 | + self.reply("472 %s %s :Unknown MODE flag" |
| 551 | + % (self.nickname, flag)) |
| 552 | + elif targetname == self.nickname: |
| 553 | + if len(arguments) == 1: |
| 554 | + self.reply("221 %s +" % self.nickname) |
| 555 | + else: |
| 556 | + self.reply("501 %s :Unknown MODE flag" % self.nickname) |
| 557 | + else: |
| 558 | + self.reply_403(targetname) |
| 559 | + |
| 560 | + def motd_handler(): |
| 561 | + self.send_motd() |
| 562 | + |
| 563 | + def nick_handler(): |
| 564 | + if len(arguments) < 1: |
| 565 | + self.reply("431 :No nickname given") |
| 566 | + return |
| 567 | + newnick = arguments[0] |
| 568 | + client = server.get_client(newnick) |
| 569 | + if newnick == self.nickname: |
| 570 | + pass |
| 571 | + elif client and client is not self: |
| 572 | + self.reply("433 %s %s :Nickname is already in use" |
| 573 | + % (self.nickname, newnick)) |
| 574 | + elif not self.__valid_nickname_regexp.match(newnick): |
| 575 | + self.reply("432 %s %s :Erroneous Nickname" |
| 576 | + % (self.nickname, newnick)) |
| 577 | + else: |
| 578 | + for x in self.channels.values(): |
| 579 | + self.channel_log( |
| 580 | + x, "changed nickname to %s" % newnick, meta=True) |
| 581 | + oldnickname = self.nickname |
| 582 | + self.nickname = newnick |
| 583 | + server.client_changed_nickname(self, oldnickname) |
| 584 | + self.message_related( |
| 585 | + ":%s!%s@%s NICK %s" |
| 586 | + % (oldnickname, self.user, self.host, self.nickname), |
| 587 | + True) |
| 588 | + |
| 589 | + def notice_and_privmsg_handler(): |
| 590 | + if len(arguments) == 0: |
| 591 | + self.reply("411 %s :No recipient given (%s)" |
| 592 | + % (self.nickname, command)) |
| 593 | + return |
| 594 | + if len(arguments) == 1: |
| 595 | + self.reply("412 %s :No text to send" % self.nickname) |
| 596 | + return |
| 597 | + targetname = arguments[0] |
| 598 | + message = arguments[1] |
| 599 | + client = server.get_client(targetname) |
| 600 | + |
| 601 | + if client: |
| 602 | + client.message(":%s %s %s :%s" |
| 603 | + % (self.prefix, command, targetname, message)) |
| 604 | + elif server.has_channel(targetname): |
| 605 | + channel = server.get_channel(targetname) |
| 606 | + self.message_channel( |
| 607 | + channel, command, "%s :%s" % (channel.name, message)) |
| 608 | + self.channel_log(channel, message) |
| 609 | + else: |
| 610 | + self.reply("401 %s %s :No such nick/channel" |
| 611 | + % (self.nickname, targetname)) |
| 612 | + |
| 613 | + def part_handler(): |
| 614 | + if len(arguments) < 1: |
| 615 | + self.reply_461("PART") |
| 616 | + return |
| 617 | + if len(arguments) > 1: |
| 618 | + partmsg = arguments[1] |
| 619 | + else: |
| 620 | + partmsg = self.nickname |
| 621 | + for channelname in arguments[0].split(","): |
| 622 | + if not valid_channel_re.match(channelname): |
| 623 | + self.reply_403(channelname) |
| 624 | + elif not irc_lower(channelname) in self.channels: |
| 625 | + self.reply("442 %s %s :You're not on that channel" |
| 626 | + % (self.nickname, channelname)) |
| 627 | + else: |
| 628 | + channel = self.channels[irc_lower(channelname)] |
| 629 | + self.message_channel( |
| 630 | + channel, "PART", "%s :%s" % (channelname, partmsg), |
| 631 | + True) |
| 632 | + self.channel_log(channel, "left (%s)" % partmsg, meta=True) |
| 633 | + del self.channels[irc_lower(channelname)] |
| 634 | + server.remove_member_from_channel(self, channelname) |
| 635 | + |
| 636 | + def ping_handler(): |
| 637 | + if len(arguments) < 1: |
| 638 | + self.reply("409 %s :No origin specified" % self.nickname) |
| 639 | + return |
| 640 | + self.reply("PONG %s :%s" % (server.name, arguments[0])) |
| 641 | + |
| 642 | + def pong_handler(): |
| 643 | + pass |
| 644 | + |
| 645 | + def quit_handler(): |
| 646 | + if len(arguments) < 1: |
| 647 | + quitmsg = self.nickname |
| 648 | + else: |
| 649 | + quitmsg = arguments[0] |
| 650 | + self.disconnect(quitmsg) |
| 651 | + |
| 652 | + def topic_handler(): |
| 653 | + if len(arguments) < 1: |
| 654 | + self.reply_461("TOPIC") |
| 655 | + return |
| 656 | + channelname = arguments[0] |
| 657 | + channel = self.channels.get(irc_lower(channelname)) |
| 658 | + if channel: |
| 659 | + if len(arguments) > 1: |
| 660 | + newtopic = arguments[1] |
| 661 | + channel.topic = newtopic |
| 662 | + self.message_channel( |
| 663 | + channel, "TOPIC", "%s :%s" % (channelname, newtopic), |
| 664 | + True) |
| 665 | + self.channel_log( |
| 666 | + channel, "set topic to %r" % newtopic, meta=True) |
| 667 | + else: |
| 668 | + if channel.topic: |
| 669 | + self.reply("332 %s %s :%s" |
| 670 | + % (self.nickname, channel.name, |
| 671 | + channel.topic)) |
| 672 | + else: |
| 673 | + self.reply("331 %s %s :No topic is set" |
| 674 | + % (self.nickname, channel.name)) |
| 675 | + else: |
| 676 | + self.reply("442 %s :You're not on that channel" % channelname) |
| 677 | + |
| 678 | + def wallops_handler(): |
| 679 | + if len(arguments) < 1: |
| 680 | + self.reply_461(command) |
| 681 | + message = arguments[0] |
| 682 | + for client in server.clients.values(): |
| 683 | + client.message(":%s NOTICE %s :Global notice: %s" |
| 684 | + % (self.prefix, client.nickname, message)) |
| 685 | + |
| 686 | + def who_handler(): |
| 687 | + if len(arguments) < 1: |
| 688 | + return |
| 689 | + targetname = arguments[0] |
| 690 | + if server.has_channel(targetname): |
| 691 | + channel = server.get_channel(targetname) |
| 692 | + for member in channel.members: |
| 693 | + self.reply("352 %s %s %s %s %s %s H :0 %s" |
| 694 | + % (self.nickname, targetname, member.user, |
| 695 | + member.host, server.name, member.nickname, |
| 696 | + member.realname)) |
| 697 | + self.reply("315 %s %s :End of WHO list" |
| 698 | + % (self.nickname, targetname)) |
| 699 | + |
| 700 | + def whois_handler(): |
| 701 | + if len(arguments) < 1: |
| 702 | + return |
| 703 | + username = arguments[0] |
| 704 | + user = server.get_client(username) |
| 705 | + if user: |
| 706 | + self.reply("311 %s %s %s %s * :%s" |
| 707 | + % (self.nickname, user.nickname, user.user, |
| 708 | + user.host, user.realname)) |
| 709 | + self.reply("312 %s %s %s :%s" |
| 710 | + % (self.nickname, user.nickname, server.name, |
| 711 | + server.name)) |
| 712 | + self.reply("319 %s %s :%s" |
| 713 | + % (self.nickname, user.nickname, |
| 714 | + " ".join(user.channels))) |
| 715 | + self.reply("318 %s %s :End of WHOIS list" |
| 716 | + % (self.nickname, user.nickname)) |
| 717 | + else: |
| 718 | + self.reply("401 %s %s :No such nick" |
| 719 | + % (self.nickname, username)) |
| 720 | + |
| 721 | + handler_table = { |
| 722 | + "AWAY": away_handler, |
| 723 | + "ISON": ison_handler, |
| 724 | + "JOIN": join_handler, |
| 725 | + "LIST": list_handler, |
| 726 | + "LUSERS": lusers_handler, |
| 727 | + "MODE": mode_handler, |
| 728 | + "MOTD": motd_handler, |
| 729 | + "NICK": nick_handler, |
| 730 | + "NOTICE": notice_and_privmsg_handler, |
| 731 | + "PART": part_handler, |
| 732 | + "PING": ping_handler, |
| 733 | + "PONG": pong_handler, |
| 734 | + "PRIVMSG": notice_and_privmsg_handler, |
| 735 | + "QUIT": quit_handler, |
| 736 | + "TOPIC": topic_handler, |
| 737 | + "WALLOPS": wallops_handler, |
| 738 | + "WHO": who_handler, |
| 739 | + "WHOIS": whois_handler, |
| 740 | + } |
| 741 | + server = self.server |
| 742 | + valid_channel_re = self.__valid_channelname_regexp |
| 743 | + try: |
| 744 | + handler_table[command]() |
| 745 | + except KeyError: |
| 746 | + self.reply("421 %s %s :Unknown command" % (self.nickname, command)) |
| 747 | + |
| 748 | + def udp_data_received(self, data): |
| 749 | + if data: |
| 750 | + message = self.infosec.unpack(data) |
| 751 | + if(message != None): |
| 752 | + self.message(message) |
| 753 | + |
| 754 | + def socket_readable_notification(self): |
| 755 | + try: |
| 756 | + data = self.socket.recv(2 ** 10) |
| 757 | + self.server.print_debug( |
| 758 | + "[%s:%d] -> %r" % (self.host, self.port, data)) |
| 759 | + quitmsg = "EOT" |
| 760 | + except socket.error as x: |
| 761 | + data = "" |
| 762 | + quitmsg = x |
| 763 | + if data: |
| 764 | + self.__readbuffer += data |
| 765 | + self.__parse_read_buffer() |
| 766 | + self.__timestamp = time.time() |
| 767 | + self.__sent_ping = False |
| 768 | + for peer in self.server.peers: |
| 769 | + peer.send(self, data) |
| 770 | + else: |
| 771 | + self.disconnect(quitmsg) |
| 772 | + |
| 773 | + def socket_writable_notification(self): |
| 774 | + try: |
| 775 | + print("socket_writable_notification: %s" % self.__writebuffer) |
| 776 | + sent = self.socket.send(self.__writebuffer) |
| 777 | + self.server.print_debug( |
| 778 | + "[%s:%d] <- %r" % ( |
| 779 | + self.host, self.port, self.__writebuffer[:sent])) |
| 780 | + self.__writebuffer = self.__writebuffer[sent:] |
| 781 | + except socket.error as x: |
| 782 | + self.disconnect(x) |
| 783 | + |
| 784 | + def disconnect(self, quitmsg): |
| 785 | + self.message("ERROR :%s" % quitmsg) |
| 786 | + self.server.print_info( |
| 787 | + "Disconnected connection from %s:%s (%s)." % ( |
| 788 | + self.host, self.port, quitmsg)) |
| 789 | + self.socket.close() |
| 790 | + self.server.remove_client(self, quitmsg) |
| 791 | + |
| 792 | + def message(self, msg): |
| 793 | + self.__writebuffer += msg + "\r\n" |
| 794 | + |
| 795 | + def reply(self, msg): |
| 796 | + self.message(":%s %s" % (self.server.name, msg)) |
| 797 | + |
| 798 | + def reply_403(self, channel): |
| 799 | + self.reply("403 %s %s :No such channel" % (self.nickname, channel)) |
| 800 | + |
| 801 | + def reply_461(self, command): |
| 802 | + nickname = self.nickname or "*" |
| 803 | + self.reply("461 %s %s :Not enough parameters" % (nickname, command)) |
| 804 | + |
| 805 | + def message_channel(self, channel, command, message, include_self=False): |
| 806 | + line = ":%s %s %s" % (self.prefix, command, message) |
| 807 | + for client in channel.members: |
| 808 | + if client != self or include_self: |
| 809 | + client.message(line) |
| 810 | + |
| 811 | + def channel_log(self, channel, message, meta=False): |
| 812 | + if not self.server.logdir: |
| 813 | + return |
| 814 | + if meta: |
| 815 | + format = "[%s] * %s %s\n" |
| 816 | + else: |
| 817 | + format = "[%s] <%s> %s\n" |
| 818 | + timestamp = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC") |
| 819 | + logname = channel.name.replace("_", "__").replace("/", "_") |
| 820 | + fp = open("%s/%s.log" % (self.server.logdir, logname), "a") |
| 821 | + fp.write(format % (timestamp, self.nickname, message)) |
| 822 | + fp.close() |
| 823 | + |
| 824 | + def message_related(self, msg, include_self=False): |
| 825 | + clients = set() |
| 826 | + if include_self: |
| 827 | + clients.add(self) |
| 828 | + for channel in self.channels.values(): |
| 829 | + clients |= channel.members |
| 830 | + if not include_self: |
| 831 | + clients.discard(self) |
| 832 | + for client in clients: |
| 833 | + client.message(msg) |
| 834 | + |
| 835 | + def send_lusers(self): |
| 836 | + self.reply("251 %s :There are %d users and 0 services on 1 server" |
| 837 | + % (self.nickname, len(self.server.clients))) |
| 838 | + |
| 839 | + def send_motd(self): |
| 840 | + server = self.server |
| 841 | + motdlines = server.get_motd_lines() |
| 842 | + if motdlines: |
| 843 | + self.reply("375 %s :- %s Message of the day -" |
| 844 | + % (self.nickname, server.name)) |
| 845 | + for line in motdlines: |
| 846 | + self.reply("372 %s :- %s" % (self.nickname, line.rstrip())) |
| 847 | + self.reply("376 %s :End of /MOTD command" % self.nickname) |
| 848 | + else: |
| 849 | + self.reply("422 %s :MOTD File is missing" % self.nickname) |
| 850 | diff --git a/lib/funcs.py b/lib/funcs.py |
| 851 | new file mode 100644 |
| 852 | index 0000000..4093964 |
| 853 | |
| 854 | |
| 855 | |
| 856 | +import sys |
| 857 | +import string |
| 858 | + |
| 859 | +_maketrans = str.maketrans if sys.version_info[0] == 3 else string.maketrans |
| 860 | +_ircstring_translation = _maketrans( |
| 861 | + string.ascii_lowercase.upper() + "[]\\^", |
| 862 | + string.ascii_lowercase + "{}|~") |
| 863 | + |
| 864 | +def irc_lower(s): |
| 865 | + return string.translate(s, _ircstring_translation) |
| 866 | + |
| 867 | diff --git a/lib/infosec.py b/lib/infosec.py |
| 868 | new file mode 100644 |
| 869 | index 0000000..6e87ca6 |
| 870 | |
| 871 | |
| 872 | |
| 873 | +import hashlib |
| 874 | +PACKET_SIZE = 1024 |
| 875 | +MAX_MESSAGE_SIZE = 512 |
| 876 | + |
| 877 | +class Infosec(object): |
| 878 | + #def __init__(self): |
| 879 | + # do nothing |
| 880 | + |
| 881 | + def pack(self, message): |
| 882 | + digest = hashlib.sha512(self._pad(message)).hexdigest() |
| 883 | + return digest + message |
| 884 | + |
| 885 | + def unpack(self, package): |
| 886 | + print("received package: %s" % package) |
| 887 | + received_digest = package[0:128] |
| 888 | + message = package[128:1023] |
| 889 | + digest = hashlib.sha512(self._pad(message)).hexdigest() |
| 890 | + print("received_digest: %s" % received_digest) |
| 891 | + print("digest: %s" % digest) |
| 892 | + print("message: %s") % message |
| 893 | + if(received_digest == digest): |
| 894 | + return message |
| 895 | + else: |
| 896 | + print("unable to validate package: %s" % package) |
| 897 | + return None |
| 898 | + |
| 899 | + def _pad(self, text): |
| 900 | + return str(text.ljust(MAX_MESSAGE_SIZE)).encode("ascii") |
| 901 | + |
| 902 | diff --git a/lib/peer.py b/lib/peer.py |
| 903 | new file mode 100644 |
| 904 | index 0000000..4a64ed7 |
| 905 | |
| 906 | |
| 907 | |
| 908 | +import socket |
| 909 | +from infosec import Infosec |
| 910 | + |
| 911 | +class Peer(object): |
| 912 | + def __init__(self, address): |
| 913 | + self.address = address |
| 914 | + self.socket = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM) |
| 915 | + self.infosec = Infosec() |
| 916 | + |
| 917 | + def send(self, client, msg): |
| 918 | + full_message = str.encode(":%s %s" % (client.nickname, msg)) |
| 919 | + print("sending formatted_msg: %s" % full_message) |
| 920 | + self.socket.sendto(self.infosec.pack(full_message), (self.address, 7778)) |
| 921 | diff --git a/lib/server.py b/lib/server.py |
| 922 | new file mode 100644 |
| 923 | index 0000000..38bf514 |
| 924 | |
| 925 | |
| 926 | |
| 927 | +VERSION = "9999" |
| 928 | + |
| 929 | +import os |
| 930 | +import select |
| 931 | +import socket |
| 932 | +import sys |
| 933 | +import sys |
| 934 | +import tempfile |
| 935 | +import time |
| 936 | +import string |
| 937 | +from datetime import datetime |
| 938 | +from lib.client import Client |
| 939 | +from lib.channel import Channel |
| 940 | +from lib.infosec import PACKET_SIZE |
| 941 | +from lib.infosec import Infosec |
| 942 | +from lib.peer import Peer |
| 943 | +from funcs import * |
| 944 | + |
| 945 | +class Server(object): |
| 946 | + def __init__(self, options): |
| 947 | + self.ports = options.ports |
| 948 | + self.peers = options.peers |
| 949 | + self.udp_port = options.udp_port |
| 950 | + self.password = options.password |
| 951 | + self.ssl_pem_file = options.ssl_pem_file |
| 952 | + self.motdfile = options.motd |
| 953 | + self.verbose = options.verbose |
| 954 | + self.debug = options.debug |
| 955 | + self.logdir = options.logdir |
| 956 | + self.chroot = options.chroot |
| 957 | + self.setuid = options.setuid |
| 958 | + self.statedir = options.statedir |
| 959 | + |
| 960 | + if options.listen: |
| 961 | + self.address = socket.gethostbyname(options.listen) |
| 962 | + else: |
| 963 | + self.address = "" |
| 964 | + server_name_limit = 63 # From the RFC. |
| 965 | + self.name = socket.getfqdn(self.address)[:server_name_limit] |
| 966 | + |
| 967 | + self.channels = {} # irc_lower(Channel name) --> Channel instance. |
| 968 | + self.clients = {} # Socket --> Client instance..peers = "" |
| 969 | + self.nicknames = {} # irc_lower(Nickname) --> Client instance. |
| 970 | + if self.logdir: |
| 971 | + create_directory(self.logdir) |
| 972 | + if self.statedir: |
| 973 | + create_directory(self.statedir) |
| 974 | + |
| 975 | + def daemonize(self): |
| 976 | + try: |
| 977 | + pid = os.fork() |
| 978 | + if pid > 0: |
| 979 | + sys.exit(0) |
| 980 | + except OSError: |
| 981 | + sys.exit(1) |
| 982 | + os.setsid() |
| 983 | + try: |
| 984 | + pid = os.fork() |
| 985 | + if pid > 0: |
| 986 | + self.print_info("PID: %d" % pid) |
| 987 | + sys.exit(0) |
| 988 | + except OSError: |
| 989 | + sys.exit(1) |
| 990 | + os.chdir("/") |
| 991 | + os.umask(0) |
| 992 | + dev_null = open("/dev/null", "r+") |
| 993 | + os.dup2(dev_null.fileno(), sys.stdout.fileno()) |
| 994 | + os.dup2(dev_null.fileno(), sys.stderr.fileno()) |
| 995 | + os.dup2(dev_null.fileno(), sys.stdin.fileno()) |
| 996 | + |
| 997 | + def get_client(self, nickname): |
| 998 | + return self.nicknames.get(irc_lower(nickname)) |
| 999 | + |
| 1000 | + def has_channel(self, name): |
| 1001 | + return irc_lower(name) in self.channels |
| 1002 | + |
| 1003 | + def get_channel(self, channelname): |
| 1004 | + if irc_lower(channelname) in self.channels: |
| 1005 | + channel = self.channels[irc_lower(channelname)] |
| 1006 | + else: |
| 1007 | + channel = Channel(self, channelname) |
| 1008 | + self.channels[irc_lower(channelname)] = channel |
| 1009 | + return channel |
| 1010 | + |
| 1011 | + def get_motd_lines(self): |
| 1012 | + if self.motdfile: |
| 1013 | + try: |
| 1014 | + return open(self.motdfile).readlines() |
| 1015 | + except IOError: |
| 1016 | + return ["Could not read MOTD file %r." % self.motdfile] |
| 1017 | + else: |
| 1018 | + return [] |
| 1019 | + |
| 1020 | + def print_info(self, msg): |
| 1021 | + if self.verbose: |
| 1022 | + print(msg) |
| 1023 | + sys.stdout.flush() |
| 1024 | + |
| 1025 | + def print_debug(self, msg): |
| 1026 | + if self.debug: |
| 1027 | + print(msg) |
| 1028 | + sys.stdout.flush() |
| 1029 | + |
| 1030 | + def print_error(self, msg): |
| 1031 | + sys.stderr.write("%s\n" % msg) |
| 1032 | + |
| 1033 | + def client_changed_nickname(self, client, oldnickname): |
| 1034 | + if oldnickname: |
| 1035 | + del self.nicknames[irc_lower(oldnickname)] |
| 1036 | + self.nicknames[irc_lower(client.nickname)] = client |
| 1037 | + |
| 1038 | + def remove_member_from_channel(self, client, channelname): |
| 1039 | + if irc_lower(channelname) in self.channels: |
| 1040 | + channel = self.channels[irc_lower(channelname)] |
| 1041 | + channel.remove_client(client) |
| 1042 | + |
| 1043 | + def remove_client(self, client, quitmsg): |
| 1044 | + client.message_related(":%s QUIT :%s" % (client.prefix, quitmsg)) |
| 1045 | + for x in client.channels.values(): |
| 1046 | + client.channel_log(x, "quit (%s)" % quitmsg, meta=True) |
| 1047 | + x.remove_client(client) |
| 1048 | + if client.nickname \ |
| 1049 | + and irc_lower(client.nickname) in self.nicknames: |
| 1050 | + del self.nicknames[irc_lower(client.nickname)] |
| 1051 | + del self.clients[client.socket] |
| 1052 | + |
| 1053 | + def remove_channel(self, channel): |
| 1054 | + del self.channels[irc_lower(channel.name)] |
| 1055 | + |
| 1056 | + def start(self): |
| 1057 | + # Setup UDP first |
| 1058 | + udp_server_socket = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM) |
| 1059 | + udp_server_socket.bind((self.address, self.udp_port)) |
| 1060 | + |
| 1061 | + serversockets = [] |
| 1062 | + for port in self.ports: |
| 1063 | + s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
| 1064 | + s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) |
| 1065 | + try: |
| 1066 | + s.bind((self.address, port)) |
| 1067 | + except socket.error as e: |
| 1068 | + self.print_error("Could not bind port %s: %s." % (port, e)) |
| 1069 | + sys.exit(1) |
| 1070 | + s.listen(5) |
| 1071 | + serversockets.append(s) |
| 1072 | + del s |
| 1073 | + self.print_info("Listening on port %d." % port) |
| 1074 | + if self.chroot: |
| 1075 | + os.chdir(self.chroot) |
| 1076 | + os.chroot(self.chroot) |
| 1077 | + self.print_info("Changed root directory to %s" % self.chroot) |
| 1078 | + if self.setuid: |
| 1079 | + os.setgid(self.setuid[1]) |
| 1080 | + os.setuid(self.setuid[0]) |
| 1081 | + self.print_info("Setting uid:gid to %s:%s" |
| 1082 | + % (self.setuid[0], self.setuid[1])) |
| 1083 | + last_aliveness_check = time.time() |
| 1084 | + while True: |
| 1085 | + (inputready,outputready,exceptready) = select.select([udp_server_socket],[],[],0) |
| 1086 | + (iwtd, owtd, ewtd) = select.select( |
| 1087 | + serversockets + [x.socket for x in self.clients.values()], |
| 1088 | + [x.socket for x in self.clients.values() |
| 1089 | + if x.write_queue_size() > 0], |
| 1090 | + [], |
| 1091 | + 0) |
| 1092 | + for x in inputready: |
| 1093 | + if x == udp_server_socket: |
| 1094 | + bytes_address_pair = udp_server_socket.recvfrom(PACKET_SIZE) |
| 1095 | + message = bytes_address_pair[0] |
| 1096 | + address = bytes_address_pair[1] |
| 1097 | + print message |
| 1098 | + for c in self.clients: |
| 1099 | + self.clients[c].udp_data_received(message) |
| 1100 | + for x in iwtd: |
| 1101 | + if x in self.clients: |
| 1102 | + self.clients[x].socket_readable_notification() |
| 1103 | + else: |
| 1104 | + (conn, addr) = x.accept() |
| 1105 | + if self.ssl_pem_file: |
| 1106 | + import ssl |
| 1107 | + try: |
| 1108 | + conn = ssl.wrap_socket( |
| 1109 | + conn, |
| 1110 | + server_side=True, |
| 1111 | + certfile=self.ssl_pem_file, |
| 1112 | + keyfile=self.ssl_pem_file) |
| 1113 | + except ssl.SSLError as e: |
| 1114 | + self.print_error( |
| 1115 | + "SSL error for connection from %s:%s: %s" % ( |
| 1116 | + addr[0], addr[1], e)) |
| 1117 | + continue |
| 1118 | + self.clients[conn] = Client(self, conn) |
| 1119 | + self.print_info("Accepted connection from %s:%s." % ( |
| 1120 | + addr[0], addr[1])) |
| 1121 | + for x in owtd: |
| 1122 | + if x in self.clients: # client may have been disconnected |
| 1123 | + self.clients[x].socket_writable_notification() |
| 1124 | + now = time.time() |
| 1125 | + if last_aliveness_check + 10 < now: |
| 1126 | + for client in self.clients.values(): |
| 1127 | + client.check_aliveness() |
| 1128 | + last_aliveness_check = now |
| 1129 | + |
| 1130 | + |
| 1131 | +def create_directory(path): |
| 1132 | + if not os.path.isdir(path): |
| 1133 | + os.makedirs(path) |
| 1134 | + |
| 1135 |