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anope/modules/protocol/ngircd.cpp
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/*
* 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();
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->GetUID(), 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 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> &params) 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() << "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> &params) 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> &params) 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> &params) 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> &params) 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> &params) 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> &params) 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> &params) 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> &params) 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> &params) 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)
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