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Diffstat (limited to 'modules/protocol/ngircd.cpp')
| -rw-r--r-- | modules/protocol/ngircd.cpp | 690 |
1 files changed, 690 insertions, 0 deletions
diff --git a/modules/protocol/ngircd.cpp b/modules/protocol/ngircd.cpp new file mode 100644 index 000000000..5d88fcb75 --- /dev/null +++ b/modules/protocol/ngircd.cpp @@ -0,0 +1,690 @@ +/* + * ngIRCd Protocol module for Anope IRC Services + * + * (C) 2012 Anope Team <team@anope.org> + * (C) 2011-2012 Alexander Barton <alex@barton.de> + * (C) 2011 Anope Team <team@anope.org> + * + * Please read COPYING and README for further details. + * + * Based on the original code of Epona by Lara. + * Based on the original code of Services by Andy Church. + */ + +#include "module.h" + +class ngIRCdProto : public IRCDProto +{ + public: + ngIRCdProto() : IRCDProto("ngIRCd") + { + DefaultPseudoclientModes = "+oi"; + MaxModes = 5; + } + + void SendAkill(User *u, XLine *x) anope_override + { + // Calculate the time left before this would expire, capping it at 2 days + time_t timeleft = x->Expires - Anope::CurTime; + if (timeleft > 172800 || !x->Expires) + timeleft = 172800; + UplinkSocket::Message(Me) << "GLINE " << x->Mask << " " << timeleft << " :" << x->GetReason() << " (" << x->By << ")"; + } + + void SendAkillDel(const XLine *x) anope_override + { + UplinkSocket::Message(Me) << "GLINE " << x->Mask; + } + + void SendChannel(Channel *c) anope_override + { + UplinkSocket::Message(Me) << "CHANINFO " << c->name << " +" << c->GetModes(true, true); + } + + // Received: :dev.anope.de NICK DukeP 1 ~DukePyro p57ABF9C9.dip.t-dialin.net 1 +i :DukePyrolator + void SendClientIntroduction(const User *u) anope_override + { + Anope::string modes = "+" + u->GetModes(); + XLine x(u->nick, "Reserved for services"); + ircdproto->SendSQLine(NULL, &x); + UplinkSocket::Message(Me) << "NICK " << u->nick << " 1 " << u->GetIdent() << " " << u->host << " 1 " << modes << " :" << u->realname; + } + + void SendConnect() anope_override + { + UplinkSocket::Message() << "PASS " << Config->Uplinks[CurrentUplink]->password << " 0210-IRC+ Anope|" << Anope::VersionShort() << ":CLHSo P"; + /* Make myself known to myself in the serverlist */ + SendServer(Me); + /* finish the enhanced server handshake and register the connection */ + this->SendNumeric(376, "*", ":End of MOTD command"); + } + + void SendGlobalNotice(const BotInfo *bi, const Server *dest, const Anope::string &msg) anope_override + { + UplinkSocket::Message(bi) << "NOTICE $" << dest->GetName() << " :" << msg; + } + + void SendGlobalPrivmsg(const BotInfo *bi, const Server *dest, const Anope::string &msg) anope_override + { + UplinkSocket::Message(bi) << "PRIVMSG $" << dest->GetName() << " :" << msg; + } + + void SendGlobopsInternal(const BotInfo *source, const Anope::string &buf) anope_override + { + if (source) + UplinkSocket::Message(source) << "WALLOPS :" << buf; + else + UplinkSocket::Message(Me) << "WALLOPS :" << buf; + } + + void SendJoin(const User *user, Channel *c, const ChannelStatus *status) anope_override + { + UplinkSocket::Message(user) << "JOIN " << c->name; + if (status) + { + /* First save the channel status incase uc->Status == status */ + ChannelStatus cs = *status; + /* If the user is internally on the channel with flags, kill them so that + * the stacker will allow this. + */ + UserContainer *uc = c->FindUser(user); + if (uc != NULL) + uc->Status->ClearFlags(); + + BotInfo *setter = findbot(user->nick); + for (unsigned i = 0; i < ModeManager::ChannelModes.size(); ++i) + if (cs.HasFlag(ModeManager::ChannelModes[i]->Name)) + c->SetMode(setter, ModeManager::ChannelModes[i], user->nick, false); + } + } + + void SendKickInternal(const BotInfo *bi, const Channel *chan, const User *user, const Anope::string &buf) anope_override + { + if (!buf.empty()) + UplinkSocket::Message(bi) << "KICK " << chan->name << " " << user->nick << " :" << buf; + else + UplinkSocket::Message(bi) << "KICK " << chan->name << " " << user->nick; + } + + void SendLogin(User *u) { } anope_override + + void SendLogout(User *u) { } anope_override + + void SendModeInternal(const BotInfo *bi, const Channel *dest, const Anope::string &buf) anope_override + { + if (bi) + UplinkSocket::Message(bi) << "MODE " << dest->name << " " << buf; + else + UplinkSocket::Message(Me) << "MODE " << dest->name << " " << buf; + } + + void SendModeInternal(const BotInfo *bi, const User *u, const Anope::string &buf) anope_override + { + if (bi) + UplinkSocket::Message(bi) << "MODE " << u->nick << " " << buf; + else + UplinkSocket::Message(Me) << "MODE " << u->nick << " " << buf; + } + + void SendPartInternal(const BotInfo *bi, const Channel *chan, const Anope::string &buf) anope_override + { + if (!buf.empty()) + UplinkSocket::Message(bi) << "PART " << chan->name << " :" << buf; + else + UplinkSocket::Message(bi) << "PART " << chan->name; + } + + /* SERVER name hop descript */ + void SendServer(const Server *server) anope_override + { + UplinkSocket::Message() << "SERVER " << server->GetName() << " " << server->GetHops() << " :" << server->GetDescription(); + } + + void SendSVSKillInternal(const BotInfo *source, const User *user, const Anope::string &buf) anope_override + { + if (source) + UplinkSocket::Message(source) << "KILL " << user->nick << " :" << buf; + else + UplinkSocket::Message(Me) << "KILL " << user->nick << " :" << buf; + } + + void SendTopic(BotInfo *bi, Channel *c) anope_override + { + UplinkSocket::Message(bi) << "TOPIC " << c->name << " :" << c->topic; + } +}; + +struct IRCDMessage005 : IRCDMessage +{ + IRCDMessage005() : IRCDMessage("005", 1) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } + + // Please see <http://www.irc.org/tech_docs/005.html> for details. + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + size_t pos; + Anope::string parameter, data; + for (unsigned i = 0, end = params.size(); i < end; ++i) + { + pos = params[i].find('='); + if (pos != Anope::string::npos) + { + parameter = params[i].substr(0, pos); + data = params[i].substr(pos+1, params[i].length()); + if (parameter == "MODES") + { + unsigned maxmodes = convertTo<unsigned>(data); + ircdproto->MaxModes = maxmodes; + } + else if (parameter == "NICKLEN") + { + unsigned newlen = convertTo<unsigned>(data); + if (Config->NickLen != newlen) + { + Log() << "Config->NickLen changed from " << Config->NickLen << " to " << newlen; + Config->NickLen = newlen; + } + } + } + } + return true; + } +}; + + +struct IRCDMessage376 : IRCDMessage +{ + IRCDMessage376() : IRCDMessage("376", 2) { } + + /* + * :ngircd.dev.anope.de 376 services.anope.de :End of MOTD command + * + * we do nothing here, this function exists only to + * avoid the "unknown message from server" message. + * + */ + + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + return true; + } +}; + + + +struct IRCDMessageChaninfo : IRCDMessage +{ + IRCDMessageChaninfo() : IRCDMessage("CHANINFO", 2) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); SetFlag(IRCDMESSAGE_REQUIRE_SERVER); } + + /* + * CHANINFO is used by servers to inform each other about a channel: its + * modes, channel key, user limits and its topic. The parameter combination + * <key> and <limit> is optional, as well as the <topic> parameter, so that + * there are three possible forms of this command: + * + * CHANINFO <chan> +<modes> + * CHANINFO <chan> +<modes> :<topic> + * CHANINFO <chan> +<modes> <key> <limit> :<topic> + * + * The parameter <key> must be ignored if a channel has no key (the parameter + * <modes> doesn't list the "k" channel mode). In this case <key> should + * contain "*" because the parameter <key> is required by the CHANINFO syntax + * and therefore can't be omitted. The parameter <limit> must be ignored when + * a channel has no user limit (the parameter <modes> doesn't list the "l" + * channel mode). In this case <limit> should be "0". + */ + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + + Channel *c = findchan(params[0]); + if (!c) + c = new Channel(params[0]); + + Anope::string modes = params[1]; + + if (params.size() == 3) + { + c->ChangeTopicInternal(source.GetName(), params[2], Anope::CurTime); + } + else if (params.size() == 5) + { + for (size_t i = 0, end = params[1].length(); i < end; ++i) + { + switch(params[1][i]) + { + case 'k': + modes += " " + params[2]; + continue; + case 'l': + modes += " " + params[3]; + continue; + } + } + c->ChangeTopicInternal(source.GetName(), params[4], Anope::CurTime); + } + + c->SetModesInternal(source, modes, c->creation_time, true); + return true; + } +}; + +struct IRCDMessageJoin : IRCDMessage +{ + IRCDMessageJoin() : IRCDMessage("JOIN", 1) { } + + /* + * <@po||ux> DukeP: RFC 2813, 4.2.1: the JOIN command on server-server links + * separates the modes ("o") with ASCII 7, not space. And you can't see ASCII 7. + * + * if a user joins a new channel, the ircd sends <channelname>\7<umode> + */ + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + Channel *chan; + User *user = source.GetUser(); + size_t pos = params[0].find('\7'); + Anope::string channel, modes; + + if (pos != Anope::string::npos) + { + channel = params[0].substr(0, pos); + modes = '+' + params[0].substr(pos+1, params[0].length()) + " " + user->nick; + } + else + { + channel = params[0]; + } + + chan = findchan(channel); + /* Channel doesn't exist, create it */ + if (!chan) + { + chan = new Channel(channel, Anope::CurTime); + chan->SetFlag(CH_SYNCING); + } + + EventReturn MOD_RESULT; + FOREACH_RESULT(I_OnPreJoinChannel, OnPreJoinChannel(user, chan)); + + /* Join the user to the channel */ + chan->JoinUser(user); + + if (!modes.empty()) + chan->SetModesInternal(source, modes, chan->creation_time); + + /* Set the proper modes on the user */ + chan_set_correct_modes(user, chan, 1, true); + + /* Modules may want to allow this user in the channel, check. + * If not, CheckKick will kick/ban them, don't call OnJoinChannel after this as the user will have + * been destroyed + */ + if (MOD_RESULT != EVENT_STOP && (!chan->ci || !chan->ci->CheckKick(user))) + { + FOREACH_MOD(I_OnJoinChannel, OnJoinChannel(user, chan)); + } + + /* Channel is done syncing */ + if (chan->HasFlag(CH_SYNCING)) + { + /* Unset the syncing flag */ + chan->UnsetFlag(CH_SYNCING); + chan->Sync(); + } + + return true; + } +}; + + +struct IRCDMessageMode : IRCDMessage +{ + IRCDMessageMode() : IRCDMessage("MODE", 2) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } + + /* + * Received: :DukeP MODE #anope +b *!*@*.aol.com + * Received: :DukeP MODE #anope +h DukeP + * params[0] = channel or nick + * params[1] = modes + * params[n] = parameters + */ + + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + Anope::string modes = params[1]; + + for (size_t i = 2; i < params.size(); ++i) + modes += " " + params[i]; + + if (ircdproto->IsChannelValid(params[0])) + { + Channel *c = findchan(params[0]); + + if (c) + c->SetModesInternal(source, modes, c->creation_time); + } + else + { + User *u = finduser(params[0]); + + if (u) + u->SetModesInternal("%s", params[1].c_str()); + } + return true; + } +}; + +struct IRCDMessageNick : IRCDMessage +{ + IRCDMessageNick() : IRCDMessage("NICK", 1) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } + + /* + * NICK - NEW + * Received: :dev.anope.de NICK DukeP_ 1 ~DukePyro ip-2-201-236-154.web.vodafone.de 1 + :DukePyrolator + * Parameters: <nickname> <hopcount> <username> <host> <servertoken> <umode> :<realname> + * source = server + * params[0] = nick + * params[1] = hopcount + * params[2] = username/ident + * params[3] = host + * params[4] = servertoken + * params[5] = modes + * params[6] = info + * + * NICK - change + * Received: :DukeP_ NICK :test2 + * source = oldnick + * params[0] = newnick + * + */ + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + if (params.size() == 1) + { + // we have a nickchange + source.GetUser()->ChangeNick(params[0]); + } + else if (params.size() == 7) + { + // a new user is connecting to the network + User *user = new User(params[0], params[2], params[3], "", "", source.GetServer(), params[6], Anope::CurTime, params[5], ""); + if (user && nickserv) + nickserv->Validate(user); + } + else + { + Log(LOG_DEBUG) << "Received NICK with invalid number of parameters. source = " << source.GetName() << "params[0] = " << params[0] << "params.size() = " << params.size(); + } + return true; + } +}; + +struct IRCDMessageNJoin : IRCDMessage +{ + IRCDMessageNJoin() : IRCDMessage("NJOIN",2) { SetFlag(IRCDMESSAGE_REQUIRE_SERVER); }; + + /* + * RFC 2813, 4.2.2: Njoin Message: + * The NJOIN message is used between servers only. + * It is used when two servers connect to each other to exchange + * the list of channel members for each channel. + * + * Even though the same function can be performed by using a succession + * of JOIN, this message SHOULD be used instead as it is more efficient. + * + * Received: :dev.anope.de NJOIN #test :DukeP2,@DukeP,%test,+test2 + */ + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + Channel *c = findchan(params[0]); + commasepstream sep(params[1]); + Anope::string buf; + + if (!c) + { + c = new Channel(params[0], Anope::CurTime); + c->SetFlag(CH_SYNCING); + } + + while (sep.GetToken(buf)) + { + std::list<ChannelMode *> Status; + char ch; + + /* Get prefixes from the nick */ + while ((ch = ModeManager::GetStatusChar(buf[0]))) + { + buf.erase(buf.begin()); + ChannelMode *cm = ModeManager::FindChannelModeByChar(ch); + if (!cm) + { + Log(LOG_DEBUG) << "Received unknown mode prefix " << ch << " in NJOIN string."; + continue; + } + Status.push_back(cm); + } + User *u = finduser(buf); + if (!u) + { + Log(LOG_DEBUG) << "NJOIN for nonexistant user " << buf << " on " << c->name; + continue; + } + + EventReturn MOD_RESULT; + FOREACH_RESULT(I_OnPreJoinChannel, OnPreJoinChannel(u, c)); + + /* Add the user to the Channel */ + c->JoinUser(u); + + /* Update their status internally on the channel + * This will enforce secureops etc on the user + */ + for (std::list<ChannelMode *>::iterator it = Status.begin(), it_end = Status.end(); it != it_end; ++it) + c->SetModeInternal(source, *it, buf); + /* Now set whatever modes this user is allowed to have on the channel */ + chan_set_correct_modes(u, c, 1, true); + + /* Check to see if modules want the user to join, if they do + * check to see if they are allowed to join (CheckKick will kick/ban them) + * Don't trigger OnJoinChannel event then as the user will be destroyed + */ + if (MOD_RESULT != EVENT_STOP && c->ci && c->ci->CheckKick(u)) + continue; + + FOREACH_MOD(I_OnJoinChannel, OnJoinChannel(u, c)); + } /* while */ + + if (c->HasFlag(CH_SYNCING)) + { + c->UnsetFlag(CH_SYNCING); + c->Sync(); + } + return true; + } +}; + +struct IRCDMessagePong : IRCDMessage +{ + IRCDMessagePong() : IRCDMessage("PONG", 0) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); SetFlag(IRCDMESSAGE_REQUIRE_SERVER); } + + /* + * ngIRCd does not send an EOB, so we send a PING immediately + * when receiving a new server and then finish sync once we + * get a pong back from that server. + */ + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + if (!source.GetServer()->IsSynced()) + source.GetServer()->Sync(false); + return true; + } +}; + +struct IRCDMessageServer : IRCDMessage +{ + IRCDMessageServer() : IRCDMessage("SERVER", 3) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } + + /* + * SERVER tolsun.oulu.fi 1 :Experimental server + * New server tolsun.oulu.fi introducing itself + * and attempting to register. + * + * RFC 2813 says the server has to send a hopcount + * AND a servertoken. Not quite sure what ngIRCd is + * sending here. + * + * params[0] = servername + * params[1] = hop count (or servertoken?) + * params[2] = server description + * + * + * :tolsun.oulu.fi SERVER csd.bu.edu 5 34 :BU Central Server + * Server tolsun.oulu.fi is our uplink for csd.bu.edu + * which is 5 hops away. The token "34" will be used + * by tolsun.oulu.fi when introducing new users or + * services connected to csd.bu.edu. + * + * params[0] = servername + * params[1] = hop count + * params[2] = server numeric + * params[3] = server description + */ + + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + if (params.size() == 3) + { + // our uplink is introducing itself + new Server(Me, params[0], 1, params[2], ""); + } + else + { + // our uplink is introducing a new server + unsigned int hops = params[1].is_pos_number_only() ? convertTo<unsigned>(params[1]) : 0; + new Server(source.GetServer(), params[0], hops, params[2], params[3]); + } + /* + * ngIRCd does not send an EOB, so we send a PING immediately + * when receiving a new server and then finish sync once we + * get a pong back from that server. + */ + ircdproto->SendPing(Config->ServerName, params[0]); + return true; + } +}; + +struct IRCDMessageTopic : IRCDMessage +{ + IRCDMessageTopic() : IRCDMessage("TOPIC", 2) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } + + // Received: :DukeP TOPIC #anope :test + bool Run(MessageSource &source, const std::vector<Anope::string> ¶ms) anope_override + { + Channel *c = findchan(params[0]); + if (!c) + { + Log(LOG_DEBUG) << "TOPIC for nonexistant channel " << params[0]; + return true; + } + c->ChangeTopicInternal(source.GetName(), params[1], Anope::CurTime); + return true; + } +}; + + + +class ProtongIRCd : public Module +{ + ngIRCdProto ircd_proto; + + /* Core message handlers */ + CoreIRCDMessageCapab core_message_capab; + CoreIRCDMessageError core_message_error; + CoreIRCDMessageKick core_message_kick; + CoreIRCDMessageKill core_message_kill; + CoreIRCDMessageMOTD core_message_motd; + CoreIRCDMessagePart core_message_part; + CoreIRCDMessagePing core_message_ping; + CoreIRCDMessagePrivmsg core_message_privmsg; + CoreIRCDMessageQuit core_message_quit; + CoreIRCDMessageSQuit core_message_squit; + CoreIRCDMessageStats core_message_stats; + CoreIRCDMessageTime core_message_time; + CoreIRCDMessageVersion core_message_version; + + /* Our message handlers */ + IRCDMessage005 message_005; + IRCDMessage376 message_376; + IRCDMessageChaninfo message_chaninfo; + IRCDMessageJoin message_join; + IRCDMessageMode message_mode; + IRCDMessageNick message_nick; + IRCDMessageNJoin message_njoin; + IRCDMessagePong message_pong; + IRCDMessageServer message_server; + IRCDMessageTopic message_topic; + + void AddModes() + { + /* Add user modes */ + ModeManager::AddUserMode(new UserMode(UMODE_NOCTCP, 'b')); + ModeManager::AddUserMode(new UserMode(UMODE_BOT, 'B')); + ModeManager::AddUserMode(new UserMode(UMODE_COMMONCHANS, 'C')); + ModeManager::AddUserMode(new UserMode(UMODE_INVIS, 'i')); + ModeManager::AddUserMode(new UserMode(UMODE_OPER, 'o')); + ModeManager::AddUserMode(new UserMode(UMODE_PROTECTED, 'q')); + ModeManager::AddUserMode(new UserMode(UMODE_RESTRICTED, 'r')); + ModeManager::AddUserMode(new UserMode(UMODE_REGISTERED, 'R')); + ModeManager::AddUserMode(new UserMode(UMODE_SNOMASK, 's')); + ModeManager::AddUserMode(new UserMode(UMODE_WALLOPS, 'w')); + ModeManager::AddUserMode(new UserMode(UMODE_CLOAK, 'x')); + + /* Add modes for ban, exception, and invite lists */ + ModeManager::AddChannelMode(new ChannelModeList(CMODE_BAN, 'b')); + ModeManager::AddChannelMode(new ChannelModeList(CMODE_EXCEPT, 'e')); + ModeManager::AddChannelMode(new ChannelModeList(CMODE_INVITEOVERRIDE, 'I')); + + /* Add channel user modes */ + ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_VOICE, 'v', '+')); + ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_HALFOP, 'h', '%')); + ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_OP, 'o', '@')); + ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_PROTECT, 'a', '&')); + ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_OWNER, 'q','~')); + + /* Add channel modes */ + ModeManager::AddChannelMode(new ChannelMode(CMODE_INVITE, 'i')); + ModeManager::AddChannelMode(new ChannelModeKey('k')); + ModeManager::AddChannelMode(new ChannelModeParam(CMODE_LIMIT, 'l')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_MODERATED, 'm')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_REGMODERATED, 'M')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_NOEXTERNAL, 'n')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_OPERONLY, 'O')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_PERM, 'P')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_NOKICK, 'Q')); + ModeManager::AddChannelMode(new ChannelModeRegistered('r')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_REGISTEREDONLY, 'R')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_SECRET, 's')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_TOPIC, 't')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_NOINVITE, 'V')); + ModeManager::AddChannelMode(new ChannelMode(CMODE_SSL, 'z')); + } + + public: + ProtongIRCd(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, PROTOCOL) + { + this->SetAuthor("Anope"); + + Capab.insert("QS"); + + this->AddModes(); + + Implementation i[] = { I_OnUserNickChange }; + ModuleManager::Attach(i, this, sizeof(i) / sizeof(Implementation)); + } + + void OnUserNickChange(User *u, const Anope::string &) anope_override + { + u->RemoveModeInternal(ModeManager::FindUserModeByName(UMODE_REGISTERED)); + } +}; + +MODULE_INIT(ProtongIRCd) |