/* ngIRCd Protocol module for Anope IRC Services * * (C) 2011-2012, 2014 Alexander Barton * (C) 2011-2022 Anope Team * * 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 { void SendSVSKillInternal(const MessageSource &source, User *user, const Anope::string &buf) anope_override { IRCDProto::SendSVSKillInternal(source, user, buf); user->KillInternal(source, buf); } public: ngIRCdProto(Module *creator) : IRCDProto(creator, "ngIRCd") { DefaultPseudoclientModes = "+oi"; CanCertFP = true; CanSVSNick = true; CanSetVHost = true; CanSetVIdent = true; 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(User *u) anope_override { Anope::string modes = "+" + u->GetModes(); UplinkSocket::Message(Me) << "NICK " << u->nick << " 1 " << u->GetIdent() << " " << u->host << " 1 " << modes << " :" << u->realname; } void SendConnect() anope_override { UplinkSocket::Message() << "PASS " << Config->Uplinks[Anope::CurrentUplink].password << " 0210-IRC+ Anope|" << Anope::VersionShort() << ":CLHMSo 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 SendForceNickChange(User *u, const Anope::string &newnick, time_t when) anope_override { UplinkSocket::Message(Me) << "SVSNICK " << u->nick << " " << newnick; } void SendGlobalNotice(BotInfo *bi, const Server *dest, const Anope::string &msg) anope_override { UplinkSocket::Message(bi) << "NOTICE $" << dest->GetName() << " :" << msg; } void SendGlobalPrivmsg(BotInfo *bi, const Server *dest, const Anope::string &msg) anope_override { UplinkSocket::Message(bi) << "PRIVMSG $" << dest->GetName() << " :" << msg; } void SendGlobopsInternal(const MessageSource &source, const Anope::string &buf) anope_override { UplinkSocket::Message(source) << "WALLOPS :" << buf; } void SendJoin(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. */ ChanUserContainer *uc = c->FindUser(user); if (uc != NULL) uc->status.Clear(); BotInfo *setter = BotInfo::Find(user->GetUID()); for (size_t i = 0; i < cs.Modes().length(); ++i) c->SetMode(setter, ModeManager::FindChannelModeByChar(cs.Modes()[i]), user->GetUID(), false); if (uc != NULL) uc->status = cs; } } void SendLogin(User *u, NickAlias *na) anope_override { UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " accountname :" << na->nc->display; } void SendLogout(User *u) anope_override { UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " accountname :"; } /* SERVER name hop descript */ void SendServer(const Server *server) anope_override { UplinkSocket::Message() << "SERVER " << server->GetName() << " " << server->GetHops() << " :" << server->GetDescription(); } void SendVhost(User *u, const Anope::string &vIdent, const Anope::string &vhost) anope_override { if (!vIdent.empty()) UplinkSocket::Message(Me) << "METADATA " << u->nick << " user :" << vIdent; UplinkSocket::Message(Me) << "METADATA " << u->nick << " cloakhost :" << vhost; if (!u->HasMode("CLOAK")) { u->SetMode(Config->GetClient("HostServ"), "CLOAK"); ModeManager::ProcessModes(); } } void SendVhostDel(User *u) anope_override { this->SendVhost(u, u->GetIdent(), ""); } Anope::string Format(const Anope::string &source, const Anope::string &message) anope_override { return IRCDProto::Format(source.empty() ? Me->GetSID() : source, message); } }; struct IRCDMessage005 : IRCDMessage { IRCDMessage005(Module *creator) : IRCDMessage(creator, "005", 1) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } // Please see for details. void Run(MessageSource &source, const std::vector ¶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(data); IRCD->MaxModes = maxmodes; } else if (parameter == "NICKLEN") { unsigned newlen = convertTo(data), len = Config->GetBlock("networkinfo")->Get("nicklen"); if (len != newlen) { Log() << "Warning: NICKLEN is " << newlen << " but networkinfo:nicklen is " << len; } } } } } }; struct IRCDMessage376 : IRCDMessage { IRCDMessage376(Module *creator) : IRCDMessage(creator, "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. * */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { } }; struct IRCDMessageChaninfo : IRCDMessage { IRCDMessageChaninfo(Module *creator) : IRCDMessage(creator, "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 * and is optional, as well as the parameter, so that * there are three possible forms of this command: * * CHANINFO + * CHANINFO + : * CHANINFO + : * * The parameter must be ignored if a channel has no key (the parameter * doesn't list the "k" channel mode). In this case should * contain "*" because the parameter is required by the CHANINFO syntax * and therefore can't be omitted. The parameter must be ignored when * a channel has no user limit (the parameter doesn't list the "l" * channel mode). In this case should be "0". */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { bool created; Channel *c = Channel::FindOrCreate(params[0], created); Anope::string modes = params[1]; if (params.size() == 3) { c->ChangeTopicInternal(NULL, 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(NULL, source.GetName(), params[4], Anope::CurTime); } c->SetModesInternal(source, modes); } }; struct IRCDMessageJoin : Message::Join { IRCDMessageJoin(Module *creator) : Message::Join(creator, "JOIN") { SetFlag(IRCDMESSAGE_REQUIRE_USER); } /* * <@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 \7 */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { 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]; } std::vector new_params; new_params.push_back(channel); Message::Join::Run(source, new_params); if (!modes.empty()) { Channel *c = Channel::Find(channel); if (c) c->SetModesInternal(source, modes); } } }; struct IRCDMessageMetadata : IRCDMessage { IRCDMessageMetadata(Module *creator) : IRCDMessage(creator, "METADATA", 3) { SetFlag(IRCDMESSAGE_REQUIRE_SERVER); } /* * Received: :ngircd.dev.anope.de METADATA DukePyrolator host :anope-e2ee5c7d * * params[0] = nick of the user * params[1] = command * params[2] = data * * following commands are supported: * - "accountname": the account name of a client (can't be empty) * - "certfp": the certificate fingerprint of a client (can't be empty) * - "cloakhost" : the cloaked hostname of a client * - "host": the hostname of a client (can't be empty) * - "info": info text ("real name") of a client * - "user": the user name (ident) of a client (can't be empty) */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { User *u = User::Find(params[0]); if (!u) { Log(LOG_DEBUG) << "received METADATA for nonexistent user " << params[0]; return; } if (params[1].equals_cs("accountname")) { NickCore *nc = NickCore::Find(params[2]); if (nc) u->Login(nc); } else if (params[1].equals_cs("certfp")) { u->fingerprint = params[2]; FOREACH_MOD(OnFingerprint, (u)); } else if (params[1].equals_cs("cloakhost")) { if (!params[2].empty()) u->SetDisplayedHost(params[2]); } else if (params[1].equals_cs("host")) { u->SetCloakedHost(params[2]); } else if (params[1].equals_cs("info")) { u->SetRealname(params[2]); } else if (params[1].equals_cs("user")) { u->SetVIdent(params[2]); } } }; struct IRCDMessageMode : IRCDMessage { IRCDMessageMode(Module *creator) : IRCDMessage(creator, "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 */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { Anope::string modes = params[1]; for (size_t i = 2; i < params.size(); ++i) modes += " " + params[i]; if (IRCD->IsChannelValid(params[0])) { Channel *c = Channel::Find(params[0]); if (c) c->SetModesInternal(source, modes); } else { User *u = User::Find(params[0]); if (u) u->SetModesInternal(source, "%s", params[1].c_str()); } } }; struct IRCDMessageNick : IRCDMessage { IRCDMessageNick(Module *creator) : IRCDMessage(creator, "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: : * 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 * */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { if (params.size() == 1) { User *u = source.GetUser(); // we have a nickchange if (u) u->ChangeNick(params[0]); } else if (params.size() == 7) { // a new user is connecting to the network Server *s = Server::Find(params[4]); if (s == NULL) { Log(LOG_DEBUG) << "User " << params[0] << " introduced from nonexistent server " << params[4] << "?"; return; } User::OnIntroduce(params[0], params[2], params[3], "", "", s, params[6], Anope::CurTime, params[5], "", NULL); Log(LOG_DEBUG) << "Registered nick \"" << params[0] << "\" on server " << s->GetName() << "."; } else { Log(LOG_DEBUG) << "Received NICK with invalid number of parameters. source = " << source.GetName() << "params[0] = " << params[0] << "params.size() = " << params.size(); } } }; struct IRCDMessageNJoin : IRCDMessage { IRCDMessageNJoin(Module *creator) : IRCDMessage(creator, "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 */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { std::list users; commasepstream sep(params[1]); Anope::string buf; while (sep.GetToken(buf)) { Message::Join::SJoinUser sju; /* Get prefixes from the nick */ for (char ch; (ch = ModeManager::GetStatusChar(buf[0]));) { buf.erase(buf.begin()); sju.first.AddMode(ch); } sju.second = User::Find(buf); if (!sju.second) { Log(LOG_DEBUG) << "NJOIN for nonexistent user " << buf << " on " << params[0]; continue; } users.push_back(sju); } Message::Join::SJoin(source, params[0], 0, "", users); } }; struct IRCDMessagePong : IRCDMessage { IRCDMessagePong(Module *creator) : IRCDMessage(creator, "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. */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { if (!source.GetServer()->IsSynced()) source.GetServer()->Sync(false); } }; struct IRCDMessageServer : IRCDMessage { IRCDMessageServer(Module *creator) : IRCDMessage(creator, "SERVER", 3) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } /* * New directly linked server: * * SERVER tolsun.oulu.fi 1 :Experimental server * New server tolsun.oulu.fi introducing itself * and attempting to register. * * params[0] = servername * params[1] = hop count * params[2] = server description * * New remote server in the network: * * :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 */ void Run(MessageSource &source, const std::vector ¶ms) anope_override { if (params.size() == 3) { // our uplink is introducing itself new Server(Me, params[0], 1, params[2], "1"); } else { // our uplink is introducing a new server unsigned int hops = params[1].is_pos_number_only() ? convertTo(params[1]) : 0; new Server(source.GetServer(), params[0], hops, params[3], params[2]); } /* * 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. */ IRCD->SendPing(Me->GetName(), params[0]); } }; struct IRCDMessageTopic : IRCDMessage { IRCDMessageTopic(Module *creator) : IRCDMessage(creator, "TOPIC", 2) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); } // Received: :DukeP TOPIC #anope :test void Run(MessageSource &source, const std::vector ¶ms) anope_override { Channel *c = Channel::Find(params[0]); if (!c) { Log(LOG_DEBUG) << "TOPIC for nonexistent channel " << params[0]; return; } c->ChangeTopicInternal(source.GetUser(), source.GetName(), params[1], Anope::CurTime); } }; class ProtongIRCd : public Module { ngIRCdProto ircd_proto; /* Core message handlers */ Message::Capab message_capab; Message::Error message_error; Message::Invite message_invite; Message::Kick message_kick; Message::Kill message_kill; Message::MOTD message_motd; Message::Notice message_notice; Message::Part message_part; Message::Ping message_ping; Message::Privmsg message_privmsg, message_squery; Message::Quit message_quit; Message::SQuit message_squit; Message::Stats message_stats; Message::Time message_time; Message::Version message_version; Message::Whois message_whois; /* Our message handlers */ IRCDMessage005 message_005; IRCDMessage376 message_376; IRCDMessageChaninfo message_chaninfo; IRCDMessageJoin message_join; IRCDMessageMetadata message_metadata; 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("NOCTCP", 'b')); ModeManager::AddUserMode(new UserMode("BOT", 'B')); ModeManager::AddUserMode(new UserMode("COMMONCHANS", 'C')); ModeManager::AddUserMode(new UserMode("INVIS", 'i')); ModeManager::AddUserMode(new UserModeOperOnly("OPER", 'o')); ModeManager::AddUserMode(new UserModeOperOnly("PROTECTED", 'q')); ModeManager::AddUserMode(new UserModeOperOnly("RESTRICTED", 'r')); ModeManager::AddUserMode(new UserModeNoone("REGISTERED", 'R')); ModeManager::AddUserMode(new UserModeOperOnly("SNOMASK", 's')); ModeManager::AddUserMode(new UserMode("WALLOPS", 'w')); ModeManager::AddUserMode(new UserMode("CLOAK", 'x')); /* Add modes for ban, exception, and invite lists */ ModeManager::AddChannelMode(new ChannelModeList("BAN", 'b')); ModeManager::AddChannelMode(new ChannelModeList("EXCEPT", 'e')); ModeManager::AddChannelMode(new ChannelModeList("INVITEOVERRIDE", 'I')); /* Add channel user modes */ ModeManager::AddChannelMode(new ChannelModeStatus("VOICE", 'v', '+', 0)); ModeManager::AddChannelMode(new ChannelModeStatus("HALFOP", 'h', '%', 1)); ModeManager::AddChannelMode(new ChannelModeStatus("OP", 'o', '@', 2)); ModeManager::AddChannelMode(new ChannelModeStatus("PROTECT", 'a', '&', 3)); ModeManager::AddChannelMode(new ChannelModeStatus("OWNER", 'q', '~', 4)); /* Add channel modes */ ModeManager::AddChannelMode(new ChannelMode("INVITE", 'i')); ModeManager::AddChannelMode(new ChannelModeKey('k')); ModeManager::AddChannelMode(new ChannelModeParam("LIMIT", 'l', true)); ModeManager::AddChannelMode(new ChannelMode("MODERATED", 'm')); ModeManager::AddChannelMode(new ChannelMode("REGMODERATED", 'M')); ModeManager::AddChannelMode(new ChannelMode("NOEXTERNAL", 'n')); ModeManager::AddChannelMode(new ChannelMode("OPERONLY", 'O')); ModeManager::AddChannelMode(new ChannelMode("PERM", 'P')); ModeManager::AddChannelMode(new ChannelMode("NOKICK", 'Q')); ModeManager::AddChannelMode(new ChannelModeNoone("REGISTERED", 'r')); ModeManager::AddChannelMode(new ChannelMode("REGISTEREDONLY", 'R')); ModeManager::AddChannelMode(new ChannelMode("SECRET", 's')); ModeManager::AddChannelMode(new ChannelMode("TOPIC", 't')); ModeManager::AddChannelMode(new ChannelMode("NOINVITE", 'V')); ModeManager::AddChannelMode(new ChannelMode("SSL", 'z')); } public: ProtongIRCd(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, PROTOCOL | VENDOR), ircd_proto(this), message_capab(this), message_error(this), message_invite(this), message_kick(this), message_kill(this), message_motd(this), message_notice(this), message_part(this), message_ping(this), message_privmsg(this), message_squery(this, "SQUERY"), message_quit(this), message_squit(this), message_stats(this), message_time(this), message_version(this), message_whois(this), message_005(this), message_376(this), message_chaninfo(this), message_join(this), message_metadata(this), message_mode(this), message_nick(this), message_njoin(this), message_pong(this), message_server(this), message_topic(this) { Servers::Capab.insert("QS"); this->AddModes(); } void OnUserNickChange(User *u, const Anope::string &) anope_override { u->RemoveMode(Config->GetClient("NickServ"), "REGISTERED"); } }; MODULE_INIT(ProtongIRCd)