irc_client.cpp 21.8 KB
Newer Older
1
#include <irc/irc_message.hpp>
2 3 4 5
#include <irc/irc_client.hpp>
#include <bridge/bridge.hpp>
#include <irc/irc_user.hpp>

louiz’'s avatar
louiz’ committed
6
#include <logger/logger.hpp>
louiz’'s avatar
louiz’ committed
7
#include <utils/tolower.hpp>
8
#include <utils/split.hpp>
9 10 11 12

#include <iostream>
#include <stdexcept>

louiz’'s avatar
louiz’ committed
13 14 15
#include <string>
using namespace std::string_literals;

16 17 18
IrcClient::IrcClient(const std::string& hostname, const std::string& username, Bridge* bridge):
  hostname(hostname),
  username(username),
louiz’'s avatar
louiz’ committed
19 20
  current_nick(username),
  bridge(bridge),
louiz’'s avatar
louiz’ committed
21 22
  welcomed(false),
  chanmodes({"", "", "", ""})
23
{
24 25 26 27 28 29 30 31
  this->dummy_channel.topic = "This is a virtual channel provided for "
                              "convenience by biboumi, it is not connected "
                              "to any actual IRC channel of the server '" + this->hostname +
                              "', and sending messages in it has no effect. "
                              "Its main goal is to keep the connection to the IRC server "
                              "alive without having to join a real channel of that server. "
                              "To disconnect from the IRC server, leave this room and all "
                              "other IRC channels of that server.";
32 33 34 35 36 37
}

IrcClient::~IrcClient()
{
}

38 39
void IrcClient::start()
{
40 41
  if (this->connected || this->connecting)
    return ;
louiz’'s avatar
louiz’ committed
42
  this->bridge->send_xmpp_message(this->hostname, "", "Connecting to "s +
43
                                  this->hostname + ":" + "6667");
44 45 46 47 48 49
  this->connect(this->hostname, "6667");
}

void IrcClient::on_connection_failed(const std::string& reason)
{
  this->bridge->send_xmpp_message(this->hostname, "",
louiz’'s avatar
louiz’ committed
50
                                  "Connection failed: "s + reason);
51 52
}

louiz’'s avatar
louiz’ committed
53 54
void IrcClient::on_connected()
{
55 56
  this->send_nick_command(this->username);
  this->send_user_command(this->username, this->username);
57
  this->send_gateway_message("Connected to IRC server.");
58
  this->send_pending_data();
louiz’'s avatar
louiz’ committed
59 60
}

61 62
void IrcClient::on_connection_close()
{
63 64
  static const std::string message = "Connection closed by remote server.";
  this->send_gateway_message(message);
65 66
  const IrcMessage error{"ERROR", {message}};
  this->on_error(error);
67
  log_warning(message);
68 69
}

70 71
IrcChannel* IrcClient::get_channel(const std::string& name)
{
72 73
  if (name.empty())
    return &this->dummy_channel;
74 75 76 77 78 79 80 81 82 83 84
  try
    {
      return this->channels.at(name).get();
    }
  catch (const std::out_of_range& exception)
    {
      this->channels.emplace(name, std::make_unique<IrcChannel>());
      return this->channels.at(name).get();
    }
}

louiz’'s avatar
louiz’ committed
85 86
bool IrcClient::is_channel_joined(const std::string& name)
{
louiz’'s avatar
louiz’ committed
87 88
  IrcChannel* channel = this->get_channel(name);
  return channel->joined;
louiz’'s avatar
louiz’ committed
89 90
}

louiz’'s avatar
louiz’ committed
91 92 93 94 95
std::string IrcClient::get_own_nick() const
{
  return this->current_nick;
}

96
void IrcClient::parse_in_buffer(const size_t)
97
{
louiz’'s avatar
louiz’ committed
98 99 100 101 102 103
  while (true)
    {
      auto pos = this->in_buf.find("\r\n");
      if (pos == std::string::npos)
        break ;
      IrcMessage message(this->in_buf.substr(0, pos));
louiz’'s avatar
louiz’ committed
104
      log_debug("IRC RECEIVING: " << message);
louiz’'s avatar
louiz’ committed
105
      this->in_buf = this->in_buf.substr(pos + 2, std::string::npos);
106 107
      auto cb = irc_callbacks.find(message.command);
      if (cb != irc_callbacks.end())
108 109 110 111 112 113 114
        {
          try {
            (this->*(cb->second))(message);
          } catch (const std::exception& e) {
            log_error("Unhandled exception: " << e.what());
          }
        }
115
      else
louiz’'s avatar
louiz’ committed
116
        log_info("No handler for command " << message.command);
louiz’'s avatar
louiz’ committed
117 118 119 120 121
    }
}

void IrcClient::send_message(IrcMessage&& message)
{
louiz’'s avatar
louiz’ committed
122
  log_debug("IRC SENDING: " << message);
louiz’'s avatar
louiz’ committed
123 124 125 126 127 128
  std::string res;
  if (!message.prefix.empty())
    res += ":" + std::move(message.prefix) + " ";
  res += std::move(message.command);
  for (const std::string& arg: message.arguments)
    {
louiz’'s avatar
:3  
louiz’ committed
129
      if (arg.find(" ") != std::string::npos ||
louiz’'s avatar
louiz’ committed
130
          (!arg.empty() && arg[0] == ':'))
louiz’'s avatar
louiz’ committed
131 132 133 134 135 136 137
        {
          res += " :" + arg;
          break;
        }
      res += " " + arg;
    }
  res += "\r\n";
138
  this->send_data(std::move(res));
louiz’'s avatar
louiz’ committed
139 140 141 142
}

void IrcClient::send_user_command(const std::string& username, const std::string& realname)
{
louiz’'s avatar
louiz’ committed
143
  this->send_message(IrcMessage("USER", {username, "ignored", "ignored", realname}));
louiz’'s avatar
louiz’ committed
144 145 146 147 148 149 150
}

void IrcClient::send_nick_command(const std::string& nick)
{
  this->send_message(IrcMessage("NICK", {nick}));
}

151 152 153 154 155
void IrcClient::send_kick_command(const std::string& chan_name, const std::string& target, const std::string& reason)
{
  this->send_message(IrcMessage("KICK", {chan_name, target, reason}));
}

156 157 158 159 160
void IrcClient::send_topic_command(const std::string& chan_name, const std::string& topic)
{
  this->send_message(IrcMessage("TOPIC", {chan_name, topic}));
}

161
void IrcClient::send_quit_command(const std::string& reason)
louiz’'s avatar
louiz’ committed
162
{
163
  this->send_message(IrcMessage("QUIT", {reason}));
louiz’'s avatar
louiz’ committed
164 165
}

louiz’'s avatar
louiz’ committed
166 167
void IrcClient::send_join_command(const std::string& chan_name)
{
168
  this->start();
louiz’'s avatar
louiz’ committed
169
  if (this->welcomed == false)
louiz’'s avatar
louiz’ committed
170 171 172
    this->channels_to_join.push_back(chan_name);
  else
    this->send_message(IrcMessage("JOIN", {chan_name}));
173 174
}

louiz’'s avatar
louiz’ committed
175
bool IrcClient::send_channel_message(const std::string& chan_name, const std::string& body)
176
{
louiz’'s avatar
louiz’ committed
177 178 179
  IrcChannel* channel = this->get_channel(chan_name);
  if (channel->joined == false)
    {
louiz’'s avatar
louiz’ committed
180
      log_warning("Cannot send message to channel " << chan_name << ", it is not joined");
louiz’'s avatar
louiz’ committed
181 182
      return false;
    }
183 184 185 186 187 188 189 190 191
  // Cut the message body into 400-bytes parts (because the whole command
  // must fit into 512 bytes, that's an easy way to make sure the chan name
  // + body fits. I’m lazy.)
  std::string::size_type pos = 0;
  while (pos < body.size())
    {
      this->send_message(IrcMessage("PRIVMSG", {chan_name, body.substr(pos, 400)}));
      pos += 400;
    }
louiz’'s avatar
louiz’ committed
192 193 194
  return true;
}

louiz’'s avatar
louiz’ committed
195 196
void IrcClient::send_private_message(const std::string& username, const std::string& body)
{
197 198 199 200 201 202 203
  std::string::size_type pos = 0;
  while (pos < body.size())
    {
      this->send_message(IrcMessage("PRIVMSG", {username, body.substr(pos, 400)}));
      pos += 400;
    }

louiz’'s avatar
louiz’ committed
204 205
}

louiz’'s avatar
louiz’ committed
206 207 208 209
void IrcClient::send_part_command(const std::string& chan_name, const std::string& status_message)
{
  IrcChannel* channel = this->get_channel(chan_name);
  if (channel->joined == true)
louiz’'s avatar
louiz’ committed
210 211
    {
      if (chan_name.empty())
louiz’'s avatar
louiz’ committed
212
        this->leave_dummy_channel(status_message);
louiz’'s avatar
louiz’ committed
213 214 215
      else
        this->send_message(IrcMessage("PART", {chan_name, status_message}));
    }
louiz’'s avatar
louiz’ committed
216 217 218 219 220 221 222 223
}

void IrcClient::send_mode_command(const std::string& chan_name, const std::vector<std::string>& arguments)
{
  std::vector<std::string> args(arguments);
  args.insert(args.begin(), chan_name);
  IrcMessage m("MODE", std::move(args));
  this->send_message(std::move(m));
louiz’'s avatar
louiz’ committed
224 225
}

louiz’'s avatar
louiz’ committed
226 227 228 229
void IrcClient::send_pong_command(const IrcMessage& message)
{
  const std::string id = message.arguments[0];
  this->send_message(IrcMessage("PONG", {id}));
230 231 232 233 234 235 236 237 238
}

void IrcClient::forward_server_message(const IrcMessage& message)
{
  const std::string from = message.prefix;
  const std::string body = message.arguments[1];

  this->bridge->send_xmpp_message(this->hostname, from, body);
}
louiz’'s avatar
louiz’ committed
239

240 241 242 243 244 245 246 247 248 249
void IrcClient::on_notice(const IrcMessage& message)
{
  std::string from = message.prefix;
  const std::string to = message.arguments[0];
  const std::string body = message.arguments[1];

  if (to == this->current_nick)
    this->bridge->send_xmpp_message(this->hostname, from, body);
  else
    {
louiz’'s avatar
louiz’ committed
250
      IrcMessage modified_message(std::move(from), "PRIVMSG", {to, "\u000303[notice]\u0003 "s + body});
251 252 253 254
      this->on_channel_message(modified_message);
    }
}

louiz’'s avatar
louiz’ committed
255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275
void IrcClient::on_isupport_message(const IrcMessage& message)
{
  const size_t len = message.arguments.size();
  for (size_t i = 1; i < len; ++i)
  {
    const std::string token = message.arguments[i];
    if (token.substr(0, 10) == "CHANMODES=")
    {
      this->chanmodes = utils::split(token.substr(11), ',');
      // make sure we have 4 strings
      this->chanmodes.resize(4);
    }
    else if (token.substr(0, 7) == "PREFIX=")
      {
        size_t i = 8;           // jump PREFIX=(
        size_t j = 9;
        // Find the ) char
        while (j < token.size() && token[j] != ')')
          j++;
        j++;
        while (j < token.size() && token[i] != ')')
276 277 278 279
          {
            this->sorted_user_modes.push_back(token[i]);
            this->prefix_to_mode[token[j++]] = token[i++];
          }
louiz’'s avatar
louiz’ committed
280 281 282
      }
  }
}
283

284 285 286 287 288
void IrcClient::send_gateway_message(const std::string& message, const std::string& from)
{
  this->bridge->send_xmpp_message(this->hostname, from, message);
}

289 290
void IrcClient::set_and_forward_user_list(const IrcMessage& message)
{
louiz’'s avatar
louiz’ committed
291
  const std::string chan_name = utils::tolower(message.arguments[2]);
292 293 294 295
  IrcChannel* channel = this->get_channel(chan_name);
  std::vector<std::string> nicks = utils::split(message.arguments[3], ' ');
  for (const std::string& nick: nicks)
    {
296
      const IrcUser* user = channel->add_user(nick, this->prefix_to_mode);
297 298
      if (user->nick != channel->get_self()->nick)
        {
louiz’'s avatar
louiz’ committed
299
          log_debug("Adding user [" << nick << "] to chan " << chan_name);
300 301 302
          this->bridge->send_user_join(this->hostname, chan_name, user,
                                       user->get_most_significant_mode(this->sorted_user_modes),
                                       false);
303 304 305 306 307
        }
      else
        {
          // we now know the modes of self, so copy the modes into self
          channel->get_self()->modes = user->modes;
308 309 310 311
        }
    }
}

louiz’'s avatar
louiz’ committed
312
void IrcClient::on_channel_join(const IrcMessage& message)
313
{
louiz’'s avatar
louiz’ committed
314
  const std::string chan_name = utils::tolower(message.arguments[0]);
louiz’'s avatar
louiz’ committed
315 316 317 318 319
  IrcChannel* channel;
  if (chan_name.empty())
    channel = &this->dummy_channel;
  else
    channel = this->get_channel(chan_name);
louiz’'s avatar
louiz’ committed
320 321
  const std::string nick = message.prefix;
  if (channel->joined == false)
322
    channel->set_self(nick);
louiz’'s avatar
louiz’ committed
323 324
  else
    {
325
      const IrcUser* user = channel->add_user(nick, this->prefix_to_mode);
326 327 328
      this->bridge->send_user_join(this->hostname, chan_name, user,
                                   user->get_most_significant_mode(this->sorted_user_modes),
                                   false);
louiz’'s avatar
louiz’ committed
329
    }
330 331
}

louiz’'s avatar
louiz’ committed
332 333 334 335 336
void IrcClient::on_channel_message(const IrcMessage& message)
{
  const IrcUser user(message.prefix);
  const std::string nick = user.nick;
  Iid iid;
337
  iid.chan = utils::tolower(message.arguments[0]);
louiz’'s avatar
louiz’ committed
338 339
  iid.server = this->hostname;
  const std::string body = message.arguments[1];
louiz’'s avatar
louiz’ committed
340 341 342 343 344 345
  bool muc = true;
  if (!this->get_channel(iid.chan)->joined)
    {
      iid.chan = nick;
      muc = false;
    }
346 347 348 349
  if (!body.empty() && body[0] == '\01')
    {
      if (body.substr(1, 6) == "ACTION")
        this->bridge->send_message(iid, nick,
louiz’'s avatar
louiz’ committed
350
                  "/me"s + body.substr(7, body.size() - 8), muc);
351 352 353
    }
  else
    this->bridge->send_message(iid, nick, body, muc);
louiz’'s avatar
louiz’ committed
354 355
}

356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376
void IrcClient::empty_motd(const IrcMessage& message)
{
  (void)message;
  this->motd.erase();
}

void IrcClient::on_motd_line(const IrcMessage& message)
{
  const std::string body = message.arguments[1];
  // We could send the MOTD without a line break between each IRC-message,
  // but sometimes it contains some ASCII art, we use line breaks to keep
  // them intact.
  this->motd += body+"\n";
}

void IrcClient::send_motd(const IrcMessage& message)
{
  (void)message;
  this->bridge->send_xmpp_message(this->hostname, "", this->motd);
}

377 378
void IrcClient::on_topic_received(const IrcMessage& message)
{
379 380 381
  if (message.arguments.size() < 2)
    return;
  const std::string chan_name = utils::tolower(message.arguments[message.arguments.size() - 2]);
382
  IrcChannel* channel = this->get_channel(chan_name);
383
  channel->topic = message.arguments[message.arguments.size() - 1];
louiz’'s avatar
louiz’ committed
384 385
  if (channel->joined)
    this->bridge->send_topic(this->hostname, chan_name, channel->topic);
386 387 388 389
}

void IrcClient::on_channel_completely_joined(const IrcMessage& message)
{
louiz’'s avatar
louiz’ committed
390
  const std::string chan_name = utils::tolower(message.arguments[1]);
391
  IrcChannel* channel = this->get_channel(chan_name);
392
  channel->joined = true;
393 394 395
  this->bridge->send_user_join(this->hostname, chan_name, channel->get_self(),
                               channel->get_self()->get_most_significant_mode(this->sorted_user_modes),
                               true);
396
  this->bridge->send_topic(this->hostname, chan_name, channel->topic);
397
}
louiz’'s avatar
louiz’ committed
398

399 400 401 402 403 404 405
void IrcClient::on_erroneous_nickname(const IrcMessage& message)
{
  const std::string error_msg = message.arguments.size() >= 3 ?
    message.arguments[2]: "Erroneous nickname";
  this->send_gateway_message(error_msg + ": " + message.arguments[1], message.prefix);
}

406 407 408 409 410 411 412 413 414 415 416 417 418
void IrcClient::on_nickname_conflict(const IrcMessage& message)
{
  const std::string nickname = message.arguments[1];
  this->on_generic_error(message);
  for (auto it = this->channels.begin(); it != this->channels.end(); ++it)
  {
    Iid iid;
    iid.chan = it->first;
    iid.server = this->hostname;
    this->bridge->send_nickname_conflict_error(iid, nickname);
  }
}

419 420 421 422 423 424 425
void IrcClient::on_generic_error(const IrcMessage& message)
{
  const std::string error_msg = message.arguments.size() >= 3 ?
    message.arguments[2]: "Unspecified error";
  this->send_gateway_message(message.arguments[1] + ": " + error_msg, message.prefix);
}

louiz’'s avatar
louiz’ committed
426 427 428 429 430 431 432
void IrcClient::on_welcome_message(const IrcMessage& message)
{
  this->current_nick = message.arguments[0];
  this->welcomed = true;
  for (const std::string& chan_name: this->channels_to_join)
    this->send_join_command(chan_name);
  this->channels_to_join.clear();
louiz’'s avatar
louiz’ committed
433 434 435 436 437 438 439 440 441 442 443 444
  // Indicate that the dummy channel is joined as well, if needed
  if (this->dummy_channel.joining)
    {
      // Simulate a message coming from the IRC server saying that we joined
      // the channel
      const IrcMessage join_message(this->get_nick(), "JOIN", {""});
      this->on_channel_join(join_message);
      const IrcMessage end_join_message(std::string(this->hostname), "366",
                                        {this->get_nick(),
                                            "", "End of NAMES list"});
      this->on_channel_completely_joined(end_join_message);
    }
louiz’'s avatar
louiz’ committed
445
}
louiz’'s avatar
louiz’ committed
446 447 448

void IrcClient::on_part(const IrcMessage& message)
{
louiz’'s avatar
louiz’ committed
449
  const std::string chan_name = utils::tolower(message.arguments[0]);
louiz’'s avatar
louiz’ committed
450
  IrcChannel* channel = this->get_channel(chan_name);
451 452
  if (!channel->joined)
    return ;
louiz’'s avatar
louiz’ committed
453 454 455 456 457 458 459 460 461 462 463 464 465
  std::string txt;
  if (message.arguments.size() >= 2)
    txt = message.arguments[1];
  const IrcUser* user = channel->find_user(message.prefix);
  if (user)
    {
      std::string nick = user->nick;
      channel->remove_user(user);
      Iid iid;
      iid.chan = chan_name;
      iid.server = this->hostname;
      bool self = channel->get_self()->nick == nick;
      if (self)
louiz’'s avatar
louiz’ committed
466
      {
louiz’'s avatar
louiz’ committed
467
        channel->joined = false;
louiz’'s avatar
louiz’ committed
468 469 470 471
        this->channels.erase(chan_name);
        // channel pointer is now invalid
        channel = nullptr;
      }
472
      this->bridge->send_muc_leave(std::move(iid), std::move(nick), std::move(txt), self);
louiz’'s avatar
louiz’ committed
473 474
    }
}
louiz’'s avatar
louiz’ committed
475

louiz’'s avatar
louiz’ committed
476 477 478 479 480 481 482 483 484 485
void IrcClient::on_error(const IrcMessage& message)
{
  const std::string leave_message = message.arguments[0];
  // The user is out of all the channels
  for (auto it = this->channels.begin(); it != this->channels.end(); ++it)
  {
    Iid iid;
    iid.chan = it->first;
    iid.server = this->hostname;
    IrcChannel* channel = it->second.get();
486 487
    if (!channel->joined)
      continue;
louiz’'s avatar
louiz’ committed
488 489 490
    std::string own_nick = channel->get_self()->nick;
    this->bridge->send_muc_leave(std::move(iid), std::move(own_nick), leave_message, true);
  }
louiz’'s avatar
louiz’ committed
491
  this->channels.clear();
louiz’'s avatar
louiz’ committed
492
  this->send_gateway_message("ERROR: "s + leave_message);
louiz’'s avatar
louiz’ committed
493 494
}

louiz’'s avatar
louiz’ committed
495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511
void IrcClient::on_quit(const IrcMessage& message)
{
  std::string txt;
  if (message.arguments.size() >= 1)
    txt = message.arguments[0];
  for (auto it = this->channels.begin(); it != this->channels.end(); ++it)
    {
      const std::string chan_name = it->first;
      IrcChannel* channel = it->second.get();
      const IrcUser* user = channel->find_user(message.prefix);
      if (user)
        {
          std::string nick = user->nick;
          channel->remove_user(user);
          Iid iid;
          iid.chan = chan_name;
          iid.server = this->hostname;
louiz’'s avatar
louiz’ committed
512
          this->bridge->send_muc_leave(std::move(iid), std::move(nick), txt, false);
louiz’'s avatar
louiz’ committed
513 514 515
        }
    }
}
louiz’'s avatar
louiz’ committed
516 517 518 519 520 521 522 523 524 525 526 527 528 529 530

void IrcClient::on_nick(const IrcMessage& message)
{
  const std::string new_nick = message.arguments[0];
  for (auto it = this->channels.begin(); it != this->channels.end(); ++it)
    {
      const std::string chan_name = it->first;
      IrcChannel* channel = it->second.get();
      IrcUser* user = channel->find_user(message.prefix);
      if (user)
        {
          std::string old_nick = user->nick;
          Iid iid;
          iid.chan = chan_name;
          iid.server = this->hostname;
531 532 533
          const bool self = channel->get_self()->nick == old_nick;
          const char user_mode = user->get_most_significant_mode(this->sorted_user_modes);
          this->bridge->send_nick_change(std::move(iid), old_nick, new_nick, user_mode, self);
louiz’'s avatar
louiz’ committed
534 535 536 537 538 539 540 541 542 543
          user->nick = new_nick;
          if (self)
            {
              channel->get_self()->nick = new_nick;
              this->current_nick = new_nick;
            }
        }
    }
}

544 545 546 547
void IrcClient::on_kick(const IrcMessage& message)
{
  const std::string target = message.arguments[1];
  const std::string reason = message.arguments[2];
louiz’'s avatar
louiz’ committed
548
  const std::string chan_name = utils::tolower(message.arguments[0]);
549
  IrcChannel* channel = this->get_channel(chan_name);
550 551
  if (!channel->joined)
    return ;
552 553 554 555 556 557 558 559 560
  if (channel->get_self()->nick == target)
    channel->joined = false;
  IrcUser author(message.prefix);
  Iid iid;
  iid.chan = chan_name;
  iid.server = this->hostname;
  this->bridge->kick_muc_user(std::move(iid), target, reason, author.nick);
}

louiz’'s avatar
louiz’ committed
561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
void IrcClient::on_mode(const IrcMessage& message)
{
  const std::string target = message.arguments[0];
  if (target[0] == '&' || target[0] == '#' ||
      target[0] == '!' || target[0] == '+')
    this->on_channel_mode(message);
  else
    this->on_user_mode(message);
}

void IrcClient::on_channel_mode(const IrcMessage& message)
{
  // For now, just transmit the modes so the user can know what happens
  // TODO, actually interprete the mode.
  Iid iid;
576
  iid.chan = utils::tolower(message.arguments[0]);
louiz’'s avatar
louiz’ committed
577 578
  iid.server = this->hostname;
  IrcUser user(message.prefix);
579 580 581 582 583 584 585 586 587 588
  std::string mode_arguments;
  for (size_t i = 1; i < message.arguments.size(); ++i)
    {
      if (!message.arguments[i].empty())
        {
          if (i != 1)
            mode_arguments += " ";
          mode_arguments += message.arguments[i];
        }
    }
louiz’'s avatar
louiz’ committed
589
  this->bridge->send_message(iid, "", "Mode "s + iid.chan +
590
                                      " [" + mode_arguments + "] by " + user.nick,
louiz’'s avatar
louiz’ committed
591
                             true);
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661
  const IrcChannel* channel = this->get_channel(iid.chan);
  if (!channel)
    return;

  // parse the received modes, we need to handle things like "+m-oo coucou toutou"
  const std::string modes = message.arguments[1];
  // a list of modified IrcUsers. When we applied all modes, we check the
  // modes that now applies to each of them, and send a notification for
  // each one. This is to disallow sending two notifications or more when a
  // single MODE command changes two or more modes on the same participant
  std::set<const IrcUser*> modified_users;
  // If it is true, the modes are added, if it’s false they are
  // removed. When we encounter the '+' char, the value is changed to true,
  // and with '-' it is changed to false.
  bool add = true;
  bool use_arg;
  size_t arg_pos = 2;
  for (const char c: modes)
    {
      if (c == '+')
        add = true;
      else if (c == '-')
        add = false;
      else
        { // lookup the mode symbol in the 4 chanmodes lists, depending on
          // the list where it is found, it takes an argument or not
          size_t type;
          for (type = 0; type < 4; ++type)
            if (this->chanmodes[type].find(c) != std::string::npos)
              break;
          if (type == 4)        // if mode was not found
            {
              // That mode can also be of type B if it is present in the
              // prefix_to_mode map
              for (const std::pair<char, char>& pair: this->prefix_to_mode)
                if (pair.second == c)
                  {
                    type = 1;
                    break;
                  }
            }
          // modes of type A, B or C (but only with add == true)
          if (type == 0 || type == 1 ||
              (type == 2 && add == true))
            use_arg = true;
          else // modes of type C (but only with add == false), D, or unknown
            use_arg = false;
          if (use_arg == true && message.arguments.size() > arg_pos)
            {
              const std::string target = message.arguments[arg_pos++];
              IrcUser* user = channel->find_user(target);
              if (!user)
                {
                  log_warning("Trying to set mode for non-existing user '" << target
                              << "' in channel" << iid.chan);
                  return;
                }
              if (add)
                user->add_mode(c);
              else
                user->remove_mode(c);
              modified_users.insert(user);
            }
        }
    }
  for (const IrcUser* u: modified_users)
    {
      char most_significant_mode = u->get_most_significant_mode(this->sorted_user_modes);
      this->bridge->send_affiliation_role_change(iid, u->nick, most_significant_mode);
    }
louiz’'s avatar
louiz’ committed
662 663 664 665 666
}

void IrcClient::on_user_mode(const IrcMessage& message)
{
  this->bridge->send_xmpp_message(this->hostname, "",
louiz’'s avatar
louiz’ committed
667
                                  "User mode for "s + message.arguments[0] +
louiz’'s avatar
louiz’ committed
668 669
                                  " is [" + message.arguments[1] + "]");
}
670 671 672

size_t IrcClient::number_of_joined_channels() const
{
673 674 675 676
  if (this->dummy_channel.joined)
    return this->channels.size() + 1;
  else
    return this->channels.size();
677
}
louiz’'s avatar
louiz’ committed
678 679 680 681 682

DummyIrcChannel& IrcClient::get_dummy_channel()
{
  return this->dummy_channel;
}
louiz’'s avatar
louiz’ committed
683 684 685 686 687 688 689 690

void IrcClient::leave_dummy_channel(const std::string& exit_message)
{
  if (!this->dummy_channel.joined)
    return;
  this->dummy_channel.joined = false;
  this->dummy_channel.joining = false;
  this->dummy_channel.remove_all_users();
louiz’'s avatar
louiz’ committed
691
  this->bridge->send_muc_leave(Iid("%"s + this->hostname), std::string(this->current_nick), exit_message, true);
louiz’'s avatar
louiz’ committed
692
}