anope/modules/protocol/unreal32.cpp

/* Unreal IRCD 3.2.x functions
 *
 * (C) 2003-2010 Anope Team
 * Contact us at 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 "services.h"
#include "modules.h"

IRCDVar myIrcd[] = {
	{"UnrealIRCd 3.2.x",	/* ircd name */
	 "+Soi",				/* Modes used by pseudoclients */
	 5,						/* Chan Max Symbols */
	 1,						/* SVSNICK */
	 1,						/* Vhost */
	 1,						/* Supports SNlines */
	 1,						/* Supports SQlines */
	 1,						/* Supports SZlines */
	 0,						/* Join 2 Message */
	 0,						/* Chan SQlines */
	 0,						/* Quit on Kill */
	 1,						/* SVSMODE unban */
	 1,						/* Reverse */
	 1,						/* vidents */
	 1,						/* svshold */
	 1,						/* time stamp on mode */
	 1,						/* O:LINE */
	 1,						/* UMODE */
	 1,						/* No Knock requires +i */
	 1,						/* Can remove User Channel Modes with SVSMODE */
	 0,						/* Sglines are not enforced until user reconnects */
	 0,						/* ts6 */
	 0,						/* CIDR channelbans */
	 "$",					/* TLD Prefix for Global */
	 12,					/* Max number of modes we can send per line */
	 }
	,
	{NULL}
};

/* PROTOCTL */
/*
   NICKv2 = Nick Version 2
   VHP    = Sends hidden host
   UMODE2 = sends UMODE2 on user modes
   NICKIP = Sends IP on NICK
   TOKEN  = Use tokens to talk
   SJ3    = Supports SJOIN
   NOQUIT = No Quit
   TKLEXT = Extended TKL we don't use it but best to have it
   SJB64  = Base64 encoded time stamps
   VL     = Version Info
   NS     = Config->Numeric Server

*/
void unreal_cmd_capab()
{
	if (!Config->Numeric.empty())
		send_cmd("", "PROTOCTL NICKv2 VHP UMODE2 NICKIP TOKEN SJOIN SJOIN2 SJ3 NOQUIT TKLEXT VL");
	else
		send_cmd("", "PROTOCTL NICKv2 VHP UMODE2 NICKIP TOKEN SJOIN SJOIN2 SJ3 NOQUIT TKLEXT");
}

/* PASS */
void unreal_cmd_pass(const Anope::string &pass)
{
	send_cmd("", "PASS :%s", pass.c_str());
}

/* CHGHOST */
void unreal_cmd_chghost(const Anope::string &nick, const Anope::string &vhost)
{
	if (nick.empty() || vhost.empty())
		return;
	send_cmd(Config->ServerName, "AL %s %s", nick.c_str(), vhost.c_str());
}

/* CHGIDENT */
void unreal_cmd_chgident(const Anope::string &nick, const Anope::string &vIdent)
{
	if (nick.empty() || vIdent.empty())
		return;
	send_cmd(Config->ServerName, "AZ %s %s", nick.c_str(), vIdent.c_str());
}

class UnrealIRCdProto : public IRCDProto
{
	/* SVSNOOP */
	void SendSVSNOOP(const Anope::string &server, int set)
	{
		send_cmd("", "f %s %s", server.c_str(), set ? "+" : "-");
	}

	void SendAkillDel(const XLine *x)
	{
		send_cmd("", "BD - G %s %s %s", x->GetUser().c_str(), x->GetHost().c_str(), Config->s_OperServ.c_str());
	}

	void SendTopic(BotInfo *whosets, Channel *c)
	{
		send_cmd(whosets->nick, ") %s %s %lu :%s", c->name.c_str(), c->topic_setter.c_str(), static_cast<unsigned long>(c->topic_time + 1), c->topic.c_str());
	}

	void SendVhostDel(User *u)
	{
		u->RemoveMode(HostServ, UMODE_CLOAK);
		u->RemoveMode(HostServ, UMODE_VHOST);
		ModeManager::ProcessModes();
		u->SetMode(HostServ, UMODE_CLOAK);
		ModeManager::ProcessModes();
	}

	void SendAkill(const XLine *x)
	{
		// Calculate the time left before this would expire, capping it at 2 days
		time_t timeleft = x->Expires - Anope::CurTime;
		if (timeleft > 172800)
			timeleft = 172800;
		send_cmd("", "BD + G %s %s %s %ld %ld :%s", x->GetUser().c_str(), x->GetHost().c_str(), x->By.c_str(), static_cast<long>(Anope::CurTime + timeleft), static_cast<long>(x->Created), x->Reason.c_str());
	}

	void SendSVSKillInternal(const BotInfo *source, const User *user, const Anope::string &buf)
	{
		send_cmd(source ? source->nick : Config->ServerName, "h %s :%s", user->nick.c_str(), buf.c_str());
	}

	/*
	 * m_svsmode() added by taz
	 * parv[0] - sender
	 * parv[1] - username to change mode for
	 * parv[2] - modes to change
	 * parv[3] - Service Stamp (if mode == d)
	 */
	void SendSVSMode(const User *u, int ac, const char **av)
	{
		if (ac >= 1)
		{
			if (!u || !av[0])
				return;
			this->SendModeInternal(NULL, u, merge_args(ac, av));
		}
	}

	void SendModeInternal(const BotInfo *source, const Channel *dest, const Anope::string &buf)
	{
		if (buf.empty())
			return;
		send_cmd(source->nick, "G %s %s", dest->name.c_str(), buf.c_str());
	}

	void SendModeInternal(const BotInfo *bi, const User *u, const Anope::string &buf)
	{
		if (buf.empty())
			return;
		send_cmd(bi ? bi->nick : Config->ServerName, "v %s %s", u->nick.c_str(), buf.c_str());
	}

	void SendClientIntroduction(const User *u, const Anope::string &modes)
	{
		EnforceQlinedNick(u->nick, Config->ServerName);
		send_cmd("", "& %s 1 %ld %s %s %s 0 %s %s * :%s", u->nick.c_str(), u->timestamp, u->GetIdent().c_str(), u->host.c_str(), Config->ServerName.c_str(), modes.c_str(), u->host.c_str(), u->realname.c_str());
	}

	void SendKickInternal(const BotInfo *source, const Channel *chan, const User *user, const Anope::string &buf)
	{
		if (!buf.empty())
			send_cmd(source->nick, "H %s %s :%s", chan->name.c_str(), user->nick.c_str(), buf.c_str());
		else
			send_cmd(source->nick, "H %s %s", chan->name.c_str(), user->nick.c_str());
	}

	void SendNoticeChanopsInternal(const BotInfo *source, const Channel *dest, const Anope::string &buf)
	{
		if (buf.empty())
			return;
		send_cmd(source->nick, "B @%s :%s", dest->name.c_str(), buf.c_str());
	}

	/* SERVER name hop descript */
	/* Unreal 3.2 actually sends some info about itself in the descript area */
	void SendServer(const Server *server)
	{
		if (!Config->Numeric.empty())
			send_cmd("", "SERVER %s %d :U0-*-%s %s", server->GetName().c_str(), server->GetHops(), Config->Numeric.c_str(), server->GetDescription().c_str());
		else
			send_cmd("", "SERVER %s %d :%s", server->GetName().c_str(), server->GetHops(), server->GetDescription().c_str());
	}

	/* JOIN */
	void SendJoin(const BotInfo *user, const Anope::string &channel, time_t chantime)
	{
		send_cmd(Config->ServerName, "~ %ld %s :%s", static_cast<long>(chantime), channel.c_str(), user->nick.c_str());
	}

	void SendJoin(BotInfo *user, const ChannelContainer *cc)
	{
		send_cmd(Config->ServerName, "~ %ld %s :%s%s", static_cast<long>(cc->chan->creation_time), cc->chan->name.c_str(), cc->Status->BuildModePrefixList().c_str(), user->nick.c_str());
		cc->chan->SetModes(user, false, "%s", cc->chan->GetModes(true, true).c_str());
	}

	/* unsqline
	*/
	void SendSQLineDel(const XLine *x)
	{
		send_cmd("", "d %s", x->Mask.c_str());
	}

	/* SQLINE */
	/*
	** - Unreal will translate this to TKL for us
	**
	*/
	void SendSQLine(const XLine *x)
	{
		send_cmd("", "c %s :%s", x->Mask.c_str(), x->Reason.c_str());
	}

	/*
	** svso
	**	  parv[0] = sender prefix
	**	  parv[1] = nick
	**	  parv[2] = options
	*/
	void SendSVSO(const Anope::string &source, const Anope::string &nick, const Anope::string &flag)
	{
		if (source.empty() || nick.empty() || flag.empty())
			return;
		send_cmd(source, "BB %s %s", nick.c_str(), flag.c_str());
	}

	/* NICK <newnick>  */
	void SendChangeBotNick(const BotInfo *oldnick, const Anope::string &newnick)
	{
		if (!oldnick || newnick.empty())
			return;
		send_cmd(oldnick->nick, "& %s %ld", newnick.c_str(), static_cast<long>(Anope::CurTime));
	}

	/* Functions that use serval cmd functions */

	void SendVhost(User *u, const Anope::string &vIdent, const Anope::string &vhost)
	{
		if (!vIdent.empty())
			unreal_cmd_chgident(u->nick, vIdent);
		if (!vhost.empty())
			unreal_cmd_chghost(u->nick, vhost);
	}

	void SendConnect()
	{
		unreal_cmd_capab();
		unreal_cmd_pass(uplink_server->password);
		SendServer(Me);
	}

	/* SVSHOLD - set */
	void SendSVSHold(const Anope::string &nick)
	{
		send_cmd("", "BD + Q H %s %s %ld %ld :Being held for registered user", nick.c_str(), Config->ServerName.c_str(), static_cast<long>(Anope::CurTime + Config->NSReleaseTimeout), static_cast<long>(Anope::CurTime));
	}

	/* SVSHOLD - release */
	void SendSVSHoldDel(const Anope::string &nick)
	{
		send_cmd("", "BD - Q * %s %s", nick.c_str(), Config->ServerName.c_str());
	}

	/* UNSGLINE */
	/*
	 * SVSNLINE - :realname mask
	*/
	void SendSGLineDel(const XLine *x)
	{
		send_cmd("", "BR - :%s", x->Mask.c_str());
	}

	/* UNSZLINE */
	void SendSZLineDel(const XLine *x)
	{
		send_cmd("", "BD - Z * %s %s", x->Mask.c_str(), Config->s_OperServ.c_str());
	}

	/* SZLINE */
	void SendSZLine(const XLine *x)
	{
		send_cmd("", "BD + Z * %s %s %ld %ld :%s", x->Mask.c_str(), x->By.c_str(), static_cast<long>(Anope::CurTime + 172800), static_cast<long>(Anope::CurTime), x->Reason.c_str());
	}

	/* SGLINE */
	/*
	 * SVSNLINE + reason_where_is_space :realname mask with spaces
	*/
	void SendSGLine(const XLine *x)
	{
		Anope::string edited_reason = x->Reason;
		edited_reason = edited_reason.replace_all_cs(" ", "_");
		send_cmd("", "BR + %s :%s", edited_reason.c_str(), x->Mask.c_str());
	}

	/* SVSMODE -b */
	void SendBanDel(const Channel *c, const Anope::string &nick)
	{
		SendSVSModeChan(c, "-b", nick);
	}

	/* SVSMODE channel modes */

	void SendSVSModeChan(const Channel *c, const Anope::string &mode, const Anope::string &nick)
	{
		if (!nick.empty())
			send_cmd(Config->ServerName, "n %s %s %s", c->name.c_str(), mode.c_str(), nick.c_str());
		else
			send_cmd(Config->ServerName, "n %s %s", c->name.c_str(), mode.c_str());
	}

	/* svsjoin
		parv[0] - sender
		parv[1] - nick to make join
		parv[2] - channel to join
		parv[3] - (optional) channel key(s)
	*/
	/* In older Unreal SVSJOIN and SVSNLINE tokens were mixed so SVSJOIN and SVSNLINE are broken
	   when coming from a none TOKEN'd server
	*/
	void SendSVSJoin(const Anope::string &source, const Anope::string &nick, const Anope::string &chan, const Anope::string &param)
	{
		if (!param.empty())
			send_cmd(source, "BX %s %s :%s", nick.c_str(), chan.c_str(), param.c_str());
		else
			send_cmd(source, "BX %s :%s", nick.c_str(), chan.c_str());
	}

	/* svspart
		parv[0] - sender
		parv[1] - nick to make part
		parv[2] - channel(s) to part
	*/
	void SendSVSPart(const Anope::string &source, const Anope::string &nick, const Anope::string &chan)
	{
		send_cmd(source, "BT %s :%s", nick.c_str(), chan.c_str());
	}

	void SendSWhois(const Anope::string &source, const Anope::string &who, const Anope::string &mask)
	{
		send_cmd(source, "BA %s :%s", who.c_str(), mask.c_str());
	}

	void SendEOB()
	{
		send_cmd(Config->ServerName, "ES");
	}

	bool IsNickValid(const Anope::string &nick)
	{
		if (nick.equals_ci("ircd") || nick.equals_ci("irc"))
			return false;

		return true;
	}

	bool IsChannelValid(const Anope::string &chan)
	{
		if (chan.find(':') != Anope::string::npos || chan[0] != '#')
			return false;

		return true;
	}

	void SetAutoIdentificationToken(User *u)
	{
		if (!u->Account())
			return;

		ircdproto->SendMode(NickServ, u, "+d %d", u->timestamp);
	}

	void SendUnregisteredNick(const User *u)
	{
		ircdproto->SendMode(NickServ, u, "+d 1");
	}
} ircd_proto;

/* Event: PROTOCTL */
bool event_capab(const Anope::string &source, const std::vector<Anope::string> &params)
{
	for (unsigned i = 0; i < params.size(); ++i)
	{
		Anope::string capab = params[i];

		if (capab.find("CHANMODES") != Anope::string::npos)
		{
			Anope::string modes(capab.begin() + 10, capab.end());
			commasepstream sep(modes);
			Anope::string modebuf;

			sep.GetToken(modebuf);
			for (size_t t = 0, end = modebuf.length(); t < end; ++t)
			{
				switch (modebuf[t])
				{
					case 'b':
						ModeManager::AddChannelMode(new ChannelModeBan('b'));
						continue;
					case 'e':
						ModeManager::AddChannelMode(new ChannelModeExcept('e'));
						continue;
					case 'I':
						ModeManager::AddChannelMode(new ChannelModeInvex('I'));
						continue;
					default:
						ModeManager::AddChannelMode(new ChannelModeList(CMODE_END, "", modebuf[t]));
				}
			}

			sep.GetToken(modebuf);
			for (size_t t = 0, end = modebuf.length(); t < end; ++t)
			{
				switch (modebuf[t])
				{
					case 'k':
						ModeManager::AddChannelMode(new ChannelModeKey('k'));
						continue;
					case 'f':
						ModeManager::AddChannelMode(new ChannelModeFlood('f'));
						continue;
					case 'L':
						ModeManager::AddChannelMode(new ChannelModeParam(CMODE_REDIRECT, "CMODE_REDIRECT", 'L'));
						continue;
					default:
						ModeManager::AddChannelMode(new ChannelModeParam(CMODE_END, "", modebuf[t]));
				}
			}

			sep.GetToken(modebuf);
			for (size_t t = 0, end = modebuf.length(); t < end; ++t)
			{
				switch (modebuf[t])
				{
					case 'l':
						ModeManager::AddChannelMode(new ChannelModeParam(CMODE_LIMIT, "CMODE_LIMIT", 'l', true));
						continue;
					case 'j':
						ModeManager::AddChannelMode(new ChannelModeParam(CMODE_JOINFLOOD, "CMODE_JOINFLOOD", 'j', true));
						continue;
					default:
						ModeManager::AddChannelMode(new ChannelModeParam(CMODE_END, "", modebuf[t], true));
				}
			}

			sep.GetToken(modebuf);
			for (size_t t = 0, end = modebuf.length(); t < end; ++t)
			{
				switch (modebuf[t])
				{
					case 'p':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_PRIVATE, "CMODE_PRIVATE", 'p'));
						continue;
					case 's':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_SECRET, "CMODE_SECRET", 's'));
						continue;
					case 'm':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_MODERATED, "CMODE_MODERATED", 'm'));
						continue;
					case 'n':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NOEXTERNAL, "CMODE_NOEXTERNAL", 'n'));
						continue;
					case 't':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_TOPIC, "CMODE_TOPIC", 't'));
						continue;
					case 'i':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_INVITE, "CMODE_INVITE", 'i'));
						continue;
					case 'r':
						ModeManager::AddChannelMode(new ChannelModeRegistered('r'));
						continue;
					case 'R':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_REGISTEREDONLY, "CMODE_REGISTEREDONLY", 'R'));
						continue;
					case 'c':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_BLOCKCOLOR, "CMODE_BLOCKCOLOR", 'c'));
						continue;
					case 'O':
						ModeManager::AddChannelMode(new ChannelModeOper('O'));
						continue;
					case 'A':
						ModeManager::AddChannelMode(new ChannelModeAdmin('A'));
						continue;
					case 'Q':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NOKICK, "CMODE_NOKICK", 'Q'));
						continue;
					case 'K':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NOKNOCK, "CMODE_NOKNOCK", 'K'));
						continue;
					case 'V':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NOINVITE, "CMODE_NOINVITE", 'V'));
						continue;
					case 'C':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NOCTCP, "CMODE_NOCTCP", 'C'));
						continue;
					case 'u':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_AUDITORIUM, "CMODE_AUDITORIUM", 'u'));
						continue;
					case 'z':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_SSL, "CMODE_SSL", 'z'));
						continue;
					case 'N':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NONICK, "CMODE_NONICK", 'N'));
						continue;
					case 'S':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_STRIPCOLOR, "CMODE_STRIPCOLOR", 'S'));
						continue;
					case 'M':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_REGMODERATED, "CMODE_REGMODERATED", 'M'));
						continue;
					case 'T':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_NONOTICE, "CMODE_NONOTICE", 'T'));
						continue;
					case 'G':
						ModeManager::AddChannelMode(new ChannelMode(CMODE_FILTER, "CMODE_FILTER", 'G'));
						continue;
					default:
						ModeManager::AddChannelMode(new ChannelMode(CMODE_END, "", modebuf[t]));
				}
			}
		}
	}

	CapabParse(params);

	return true;
}

/* Events */
bool event_ping(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!params.empty())
		ircdproto->SendPong(params.size() > 1 ? params[1] : Config->ServerName, params[0]);
	return true;
}

/** This is here because:
 *
 * If we had servers three servers, A, B & C linked like so: A<->B<->C
 * If Anope is linked to A and B splits from A and then reconnects
 * B introduces itself, introduces C, sends EOS for C, introduces Bs clients
 * introduces Cs clients, sends EOS for B. This causes all of Cs clients to be introduced
 * with their server "not syncing". We now send a PING immediatly when receiving a new server
 * and then finish sync once we get a pong back from that server
 */
bool event_pong(const Anope::string &source, const std::vector<Anope::string> &params)
{
	Server *s = Server::Find(source);
	if (s && !s->IsSynced())
		s->Sync(false);
	return true;
}

/* netinfo
 *  argv[0] = max global count
 *  argv[1] = time of end sync
 *  argv[2] = unreal protocol using (numeric)
 *  argv[3] = cloak-crc (> u2302)
 *  argv[4] = free(**)
 *  argv[5] = free(**)
 *  argv[6] = free(**)
 *  argv[7] = ircnet
 */
bool event_netinfo(const Anope::string &source, const std::vector<Anope::string> &params)
{
	send_cmd("", "AO %ld %ld %d %s 0 0 0 :%s", static_cast<long>(maxusercnt), static_cast<long>(Anope::CurTime), Anope::string(params[2]).is_number_only() ? convertTo<int>(params[2]) : 0, params[3].c_str(), params[7].c_str());
	return true;
}

bool event_436(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!params.empty())
		m_nickcoll(params[0]);
	return true;
}

/*
** away
**	  parv[0] = sender prefix
**	  parv[1] = away message
*/
bool event_away(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (source.empty())
		return true;
	m_away(source, !params.empty() ? params[0] : "");
	return true;
}

/*
** m_topic
**	source = sender prefix
**	parv[0] = channel name
**	parv[1] = topic nickname
**	parv[2] = topic time
**	parv[3] = topic text
*/
bool event_topic(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 4)
		return true;
	
	Channel *c = findchan(params[0]);
	if (!c)
	{
		Log() << "TOPIC for nonexistant channel " << params[0];
		return true;
	}

	c->ChangeTopicInternal(params[1], params[3], Anope::string(params[2]).is_pos_number_only() ? convertTo<time_t>(params[2]) : Anope::CurTime);

	return true;
}

bool event_squit(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 2)
		do_squit(source, params[0]);
	return true;
}

bool event_quit(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!params.empty())
		do_quit(source, params[0]);
	return true;
}

bool event_mode(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() < 2)
		return true;
	
	bool server_source = Server::Find(source) != NULL;
	Anope::string modes = params[1];
	for (unsigned i = 2; i < params.size() - (server_source ? 1 : 0); ++i)
		modes += " " + params[i];

	if (params[0][0] == '#' || params[0][0] == '&')
		do_cmode(source, params[0], modes, server_source ? params[params.size() - 1] : "");
	else
		do_umode(source, params[0], modes);
	return true;
}

/* Unreal sends USER modes with this */
/*
	umode2
	parv[0] - sender
	parv[1] - modes to change
*/
bool event_umode2(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() < 1)
		return true;

	do_umode(source, source, params[0]);
	return true;
}

bool event_kill(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 2)
		return true;

	m_kill(params[0], params[1]);
	return true;
}

bool event_kick(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 3)
		return true;
	do_kick(source, params[0], params[1], params[2]);
	return true;
}

bool event_join(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!params.empty())
		do_join(source, params[0], "");
	return true;
}

bool event_motd(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!source.empty())
		m_motd(source);
	return true;
}

bool event_setname(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 1)
		return true;

	User *u = finduser(source);
	if (!u)
	{
		Log(LOG_DEBUG) << "SETNAME for nonexistent user " << source;
		return true;
	}

	u->SetRealname(params[0]);
	return true;
}

bool event_chgname(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 2)
		return true;

	User *u = finduser(params[0]);
	if (!u)
	{
		Log(LOG_DEBUG) << "CHGNAME for nonexistent user " << params[0];
		return true;
	}

	u->SetRealname(params[1]);
	return true;
}

bool event_setident(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 1)
		return true;

	User *u = finduser(source);
	if (!u)
	{
		Log(LOG_DEBUG) << "SETIDENT for nonexistent user " << source;
		return true;
	}

	u->SetVIdent(params[0]);
	return true;
}

bool event_chgident(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 2)
		return true;

	User *u = finduser(params[0]);
	if (!u)
	{
		Log(LOG_DEBUG) << "CHGIDENT for nonexistent user " << params[0];
		return true;
	}

	u->SetVIdent(params[1]);
	return true;
}

bool event_sethost(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 1)
		return true;

	User *u = finduser(source);
	if (!u)
	{
		Log(LOG_DEBUG) << "SETHOST for nonexistent user " << source;
		return true;
	}

	/* When a user sets +x we recieve the new host and then the mode change */
	if (u->HasMode(UMODE_CLOAK))
		u->SetDisplayedHost(params[0]);
	else
		u->SetCloakedHost(params[0]);

	return true;
}

/*
** NICK - new
**	  source  = NULL
**	parv[0] = nickname
**	  parv[1] = hopcount
**	  parv[2] = timestamp
**	  parv[3] = username
**	  parv[4] = hostname
**	  parv[5] = servername
**  if NICK version 1:
**	  parv[6] = servicestamp
**	parv[7] = info
**  if NICK version 2:
**	parv[6] = servicestamp
**	  parv[7] = umodes
**	parv[8] = virthost, * if none
**	parv[9] = info
**  if NICKIP:
**	  parv[9] = ip
**	  parv[10] = info
**
** NICK - change
**	  source  = oldnick
**	parv[0] = new nickname
**	  parv[1] = hopcount
*/
bool event_nick(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() == 7)
	{
		/*
		   <codemastr> that was a bug that is now fixed in 3.2.1
		   <codemastr> in  some instances it would use the non-nickv2 format
		   <codemastr> it's sent when a nick collision occurs
		   - so we have to leave it around for now -TSL
		 */
		do_nick(source, params[0], params[3], params[4], params[5], params[6], Anope::string(params[2]).is_pos_number_only() ? convertTo<time_t>(params[2]) : 0, "", "*", "", "");
	}
	else if (params.size() == 11)
	{
		Anope::string decoded_ip;
		b64_decode(params[9], decoded_ip);

		sockaddrs ip;
		ip.ntop(params[9].length() == 8 ? AF_INET : AF_INET6, decoded_ip.c_str());

		Anope::string vhost = params[8];
		if (vhost.equals_cs("*"))
			vhost.clear();
		
		User *user = do_nick(source, params[0], params[3], params[4], params[5], params[10], Anope::string(params[2]).is_pos_number_only() ? convertTo<time_t>(params[2]) : 0, ip.addr(), vhost, "", params[7]);
		if (user)
		{
			NickAlias *na = findnick(user->nick);

			if (na && user->timestamp == convertTo<time_t>(params[6]))
			{
				user->Login(na->nc);
				user->SetMode(NickServ, UMODE_REGISTERED);
			}
			else
				validate_user(user);
		}
	}
	else if (params.size() != 2)
	{
		Anope::string vhost = params[8];
		if (vhost.equals_cs("*"))
			vhost.clear();

		/* NON NICKIP */
		User *user = do_nick(source, params[0], params[3], params[4], params[5], params[9], Anope::string(params[2]).is_pos_number_only() ? convertTo<time_t>(params[2]) : 0, "", vhost, "", params[7]);
		if (user)
		{
			NickAlias *na = findnick(user->nick);

			if (na && user->timestamp == convertTo<time_t>(params[6]))
			{
				user->Login(na->nc);
				user->SetMode(NickServ, UMODE_REGISTERED);
			}
			else
				validate_user(user);
		}
	}
	else
		do_nick(source, params[0], "", "", "", "", Anope::string(params[1]).is_pos_number_only() ? convertTo<time_t>(params[1]) : 0, "", "", "", "");
	return true;
}

bool event_chghost(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() != 2)
		return true;

	User *u = finduser(params[0]);
	if (!u)
	{
		Log(LOG_DEBUG) << "debug: CHGHOST for nonexistent user " << params[0];
		return true;
	}

	u->SetDisplayedHost(params[1]);
	return true;
}

/* EVENT: SERVER */
bool event_server(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params[1].equals_cs("1"))
	{
		Anope::string vl = myStrGetToken(params[2], ' ', 0);
		Anope::string upnumeric = myStrGetToken(vl, '-', 2);
		Anope::string desc = myStrGetTokenRemainder(params[2], ' ', 1);
		do_server(source, params[0], Anope::string(params[1]).is_pos_number_only() ? convertTo<unsigned>(params[1]) : 0, desc, upnumeric);
	}
	else
		do_server(source, params[0], Anope::string(params[1]).is_pos_number_only() ? convertTo<unsigned>(params[1]) : 0, params[2], "");
	ircdproto->SendPing(Config->ServerName, params[0]);

	return true;
}

bool event_privmsg(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (params.size() > 1)
		m_privmsg(source, params[0], params[1]);
	return true;
}

bool event_part(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!params.empty())
		do_part(source, params[0], params.size() > 1 ? params[1] : "");
	return true;
}

bool event_whois(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!source.empty() && !params.empty())
		m_whois(source, params[0]);
	return true;
}

bool event_error(const Anope::string &source, const std::vector<Anope::string> &params)
{
	if (!params.empty())
	{
		Log(LOG_DEBUG) << params[0];
		if (params[0].find("No matching link configuration") != Anope::string::npos)
			Log() << "Error: Your IRCD's link block may not be setup correctly, please check unrealircd.conf";
	}
	return true;
}

bool event_sdesc(const Anope::string &source, const std::vector<Anope::string> &params)
{
	Server *s = Server::Find(source);

	if (s)
		s->SetDescription(params[0]);

	return true;
}

bool event_sjoin(const Anope::string &source, const std::vector<Anope::string> &params)
{
	Channel *c = findchan(params[1]);
	time_t ts = Anope::string(params[0]).is_pos_number_only() ? convertTo<time_t>(params[0]) : 0;
	bool keep_their_modes = true;

	if (!c)
	{
		c = new Channel(params[1], ts);
		c->SetFlag(CH_SYNCING);
	}
	/* Our creation time is newer than what the server gave us */
	else if (c->creation_time > ts)
	{
		c->creation_time = ts;
		c->Reset();

		/* Reset mlock */
		check_modes(c);
	}
	/* Their TS is newer than ours, our modes > theirs, unset their modes if need be */
	else if (ts > c->creation_time)
		keep_their_modes = false;

	/* If we need to keep their modes, and this SJOIN string contains modes */
	if (keep_their_modes && params.size() >= 4)
	{
		Anope::string modes;
		for (unsigned i = 2; i < params.size() - 1; ++i)
			modes += " " + params[i];
		if (!modes.empty())
			modes.erase(modes.begin());
		/* Set the modes internally */
		c->SetModesInternal(NULL, modes);
	}

	spacesepstream sep(params[params.size() - 1]);
	Anope::string buf;
	while (sep.GetToken(buf))
	{
		/* Ban */
		if (keep_their_modes && buf[0] == '&')
		{
			buf.erase(buf.begin());
			ChannelModeList *cml = debug_cast<ChannelModeList *>(ModeManager::FindChannelModeByName(CMODE_BAN));

			if (cml->IsValid(buf))
				cml->AddMask(c, buf);
		}
		/* Except */
		else if (keep_their_modes && buf[0] == '"')
		{
			buf.erase(buf.begin());
			ChannelModeList *cml = debug_cast<ChannelModeList *>(ModeManager::FindChannelModeByName(CMODE_EXCEPT));

			if (cml->IsValid(buf))
				cml->AddMask(c, buf);
		}
		/* Invex */
		else if (keep_their_modes && buf[0] == '\'')
		{
			buf.erase(buf.begin());
			ChannelModeList *cml = debug_cast<ChannelModeList *>(ModeManager::FindChannelModeByName(CMODE_INVITEOVERRIDE));

			if (cml->IsValid(buf))
				cml->AddMask(c, buf);
		}
		else
		{
			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() << "Received unknown mode prefix " << buf[0] << " in SJOIN string";
					continue;
				}

				if (keep_their_modes)
					Status.push_back(cm);
			}

			User *u = finduser(buf);
			if (!u)
			{
				Log(LOG_DEBUG) << "SJOIN 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(*it, buf);

			/* Now set whatever modes this user is allowed to have on the channel */
			chan_set_correct_modes(u, c, 1);

			/* 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));
		}
	}

	/* Channel is done syncing */
	if (c->HasFlag(CH_SYNCING))
	{
		/* Unset the syncing flag */
		c->UnsetFlag(CH_SYNCING);
		c->Sync();
	}

	return true;
}

/* Borrowed part of this check from UnrealIRCd */
bool ChannelModeFlood::IsValid(const Anope::string &value) const
{
	if (value.empty())
		return false;
	try
	{
		Anope::string rest;
		if (value[0] != ':' && convertTo<unsigned>(value[0] == '*' ? value.substr(1) : value, rest, false) > 0 && rest[0] == ':' && rest.length() > 1 && convertTo<unsigned>(rest.substr(1), rest, false) > 0 && rest.empty())
			return true;
	}
	catch (const CoreException &) { } // convertTo fail
	
	/* '['<number><1 letter>[optional: '#'+1 letter],[next..]']'':'<number> */
	size_t end_bracket = value.find(']', 1);
	if (end_bracket == Anope::string::npos)
		return false;
	Anope::string xbuf = value.substr(0, end_bracket);
	if (value[end_bracket + 1] != ':')
		return false;
	commasepstream args(xbuf.substr(1));
	Anope::string arg;
	while (args.GetToken(arg))
	{
		/* <number><1 letter>[optional: '#'+1 letter] */
		size_t p = 0;
		while (p < arg.length() && isdigit(arg[p]))
			++p;
		if (p == arg.length() || !(arg[p] == 'c' || arg[p] == 'j' || arg[p] == 'k' || arg[p] == 'm' || arg[p] == 'n' || arg[p] == 't'))
			continue; /* continue instead of break for forward compatability. */
		int v = arg.substr(0, p).is_number_only() ? convertTo<int>(arg.substr(0, p)) : 0;
		if (v < 1 || v > 999)
			return false;
	}
	return true;
}

static void AddModes()
{
	ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_VOICE, "CMODE_VOICE", 'v', '+'));
	ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_HALFOP, "CMODE_HALFOP", 'h', '%'));
	ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_OP, "CMODE_OP", 'o', '@'));
	/* Unreal sends +q as * and +a as ~ */
	ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_PROTECT, "CMODE_PROTECT", 'a', '~'));
	ModeManager::AddChannelMode(new ChannelModeStatus(CMODE_OWNER, "CMODE_OWNER", 'q', '*'));

	/* Add user modes */
	ModeManager::AddUserMode(new UserMode(UMODE_SERV_ADMIN, "UMODE_SERV_ADMIN", 'A'));
	ModeManager::AddUserMode(new UserMode(UMODE_BOT, "UMODE_BOT", 'B'));
	ModeManager::AddUserMode(new UserMode(UMODE_CO_ADMIN, "UMODE_CO_ADMIN", 'C'));
	ModeManager::AddUserMode(new UserMode(UMODE_FILTER, "UMODE_FILTER", 'G'));
	ModeManager::AddUserMode(new UserMode(UMODE_HIDEOPER, "UMODE_HIDEOPER", 'H'));
	ModeManager::AddUserMode(new UserMode(UMODE_NETADMIN, "UMODE_NETADMIN", 'N'));
	ModeManager::AddUserMode(new UserMode(UMODE_REGPRIV, "UMODE_REGPRIV", 'R'));
	ModeManager::AddUserMode(new UserMode(UMODE_PROTECTED, "UMODE_PROTECTED", 'S'));
	ModeManager::AddUserMode(new UserMode(UMODE_NO_CTCP, "UMODE_NO_CTCP", 'T'));
	ModeManager::AddUserMode(new UserMode(UMODE_WEBTV, "UMODE_WEBTV", 'V'));
	ModeManager::AddUserMode(new UserMode(UMODE_WHOIS, "UMODE_WHOIS", 'W'));
	ModeManager::AddUserMode(new UserMode(UMODE_ADMIN, "UMODE_ADMIN", 'a'));
	ModeManager::AddUserMode(new UserMode(UMODE_DEAF, "UMODE_DEAF", 'd'));
	ModeManager::AddUserMode(new UserMode(UMODE_GLOBOPS, "UMODE_GLOBOPS", 'g'));
	ModeManager::AddUserMode(new UserMode(UMODE_HELPOP, "UMODE_HELPOP", 'h'));
	ModeManager::AddUserMode(new UserMode(UMODE_INVIS, "UMODE_INVIS", 'i'));
	ModeManager::AddUserMode(new UserMode(UMODE_OPER, "UMODE_OPER", 'o'));
	ModeManager::AddUserMode(new UserMode(UMODE_PRIV, "UMODE_PRIV", 'p'));
	ModeManager::AddUserMode(new UserMode(UMODE_GOD, "UMODE_GOD", 'q'));
	ModeManager::AddUserMode(new UserMode(UMODE_REGISTERED, "UMODE_REGISTERED", 'r'));
	ModeManager::AddUserMode(new UserMode(UMODE_SNOMASK, "UMODE_SNOMASK", 's'));
	ModeManager::AddUserMode(new UserMode(UMODE_VHOST, "UMODE_VHOST", 't'));
	ModeManager::AddUserMode(new UserMode(UMODE_WALLOPS, "UMODE_WALLOPS", 'w'));
	ModeManager::AddUserMode(new UserMode(UMODE_CLOAK, "UMODE_CLOAK", 'x'));
	ModeManager::AddUserMode(new UserMode(UMODE_SSL, "UMODE_SSL", 'z'));
}

class ProtoUnreal : public Module
{
	Message message_436, message_away, message_away2, message_join, message_join2, message_kick, message_kick2,
		message_kill, message_kill2, message_mode, message_mode2, message_nick, message_nick2, message_part,
		message_part2, message_ping, message_ping2, message_pong, message_pong2, message_privmsg, message_privmsg2,
		message_quit, message_quit2, message_server, message_server2, message_squit, message_squit2, message_topic,
		message_topic2, message_svsmode, message_svsmode2, message_svs2mode, message_svs2mode2, message_whois, message_whois2,
		message_capab, message_capab2, message_chghost, message_chghost2, message_chgident, message_chgident2,
		message_chgname, message_chgname2, message_netinfo, message_netinfo2, message_sethost, message_sethost2,
		message_setident, message_setident2, message_setname, message_setname2, message_error, message_error2,
		message_umode2, message_umode22, message_sjoin, message_sjoin2, message_sdesc, message_sdesc2;
	
	/* Non-token of these in messages.cpp */
	Message message_stats, message_time, message_version;
 public:
	ProtoUnreal(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator),
		message_436("436", event_436), message_away("AWAY", event_away), message_away2("6", event_away),
		message_join("JOIN", event_join), message_join2("C", event_join), message_kick("KICK", event_kick),
		message_kick2("H", event_kick), message_kill("KILL", event_kill), message_kill2(".", event_kill),
		message_mode("MODE", event_mode), message_mode2("G", event_mode), message_nick("NICK", event_nick),
		message_nick2("&", event_nick), message_part("PART", event_part), message_part2("D", event_part),
		message_ping("PING", event_ping), message_ping2("8", event_ping), message_pong("PONG", event_pong),
		message_pong2("9", event_pong), message_privmsg("PRIVMSG", event_privmsg), message_privmsg2("!", event_privmsg),
		message_quit("QUIT", event_quit), message_quit2(",", event_quit), message_server("SERVER", event_server),
		message_server2("'", event_server), message_squit("SQUIT", event_squit), message_squit2("-", event_squit),
		message_topic("TOPIC", event_topic), message_topic2(")", event_topic), message_svsmode("SVSMODE", event_mode),
		message_svsmode2("n", event_mode), message_svs2mode("SVS2MODE", event_mode), message_svs2mode2("v", event_mode),
		message_whois("WHOIS", event_whois), message_whois2("#", event_whois), message_capab("PROTOCTL", event_capab),
		message_capab2("_", event_capab), message_chghost("CHGHOST", event_chghost), message_chghost2("AL", event_chghost),
		message_chgident("CHGIDENT", event_chgident), message_chgident2("AZ", event_chgident),
		message_chgname("CHGNAME", event_chgname), message_chgname2("BK", event_chgname),
		message_netinfo("NETINFO", event_netinfo), message_netinfo2("AO", event_netinfo),
		message_sethost("SETHOST", event_sethost), message_sethost2("AA", event_sethost),
		message_setident("SETIDENT", event_setident), message_setident2("AD", event_setident),
		message_setname("SETNAME", event_setname), message_setname2("AE", event_setname),
		message_error("ERROR", event_error), message_error2("5", event_error), message_umode2("UMODE2", event_umode2),
		message_umode22("|", event_umode2), message_sjoin("SJOIN", event_sjoin), message_sjoin2("~", event_sjoin),
		message_sdesc("SDESC", event_sdesc), message_sdesc2("AG", event_sdesc),
		
		message_stats("2", m_stats), message_time(">", m_time), message_version("+", m_version)
	{
		this->SetAuthor("Anope");
		this->SetType(PROTOCOL);

		pmodule_ircd_var(myIrcd);

		CapabType c[] = { CAPAB_NOQUIT, CAPAB_NICKIP, CAPAB_ZIP, CAPAB_TOKEN, CAPAB_SSJ3, CAPAB_NICK2, CAPAB_VL, CAPAB_TLKEXT, CAPAB_CHANMODE, CAPAB_NICKCHARS };
		for (unsigned i = 0; i < 10; ++i)
			Capab.SetFlag(c[i]);

		AddModes();

		pmodule_ircd_proto(&ircd_proto);

		ModuleManager::Attach(I_OnUserNickChange, this);
	}

	void OnUserNickChange(User *u, const Anope::string &)
	{
		u->RemoveModeInternal(ModeManager::FindUserModeByName(UMODE_REGISTERED));
	}
};

MODULE_INIT(ProtoUnreal)