Rename unreal4 to unrealircd and inspircd3 to inspircd.

1 files changed, 1940 insertions, 0 deletions

diff --git a/modules/protocol/inspircd.cpp b/modules/protocol/inspircd.cpp
new file mode 100644
index 000000000..e597ce958
--- /dev/null
+++ b/modules/protocol/inspircd.cpp
@@ -0,0 +1,1940 @@
+/* InspIRCd functions
+ *
+ * (C) 2003-2020 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 "module.h"
+#include "modules/cs_mode.h"
+#include "modules/sasl.h"
+
+struct SASLUser
+{
+	Anope::string uid;
+	Anope::string acc;
+	time_t created;
+};
+
+static std::list<SASLUser> saslusers;
+
+static Anope::string rsquit_server, rsquit_id;
+
+class InspIRCdProto : public IRCDProto
+{
+ private:
+	void SendChgIdentInternal(const Anope::string &nick, const Anope::string &vIdent)
+	{
+		if (!Servers::Capab.count("CHGIDENT"))
+			Log() << "CHGIDENT not loaded!";
+		else
+			UplinkSocket::Message(Me) << "CHGIDENT " << nick << " " << vIdent;
+	}
+
+	void SendChgHostInternal(const Anope::string &nick, const Anope::string &vhost)
+	{
+		if (!Servers::Capab.count("CHGHOST"))
+			Log() << "CHGHOST not loaded!";
+		else
+			UplinkSocket::Message(Me) << "CHGHOST " << nick << " " << vhost;
+	}
+
+	void SendAddLine(const Anope::string &xtype, const Anope::string &mask, time_t duration, const Anope::string &addedby, const Anope::string &reason)
+	{
+		UplinkSocket::Message(Me) << "ADDLINE " << xtype << " " << mask << " " << addedby << " " << Anope::CurTime << " " << duration << " :" << reason;
+	}
+
+	void SendDelLine(const Anope::string &xtype, const Anope::string &mask)
+	{
+		UplinkSocket::Message(Me) << "DELLINE " << xtype << " " << mask;
+	}
+
+ public:
+	InspIRCdProto(Module *creator) : IRCDProto(creator, "InspIRCd 3+")
+	{
+		DefaultPseudoclientModes = "+I";
+		CanSVSNick = true;
+		CanSVSJoin = true;
+		CanSetVHost = true;
+		CanSetVIdent = true;
+		CanSQLine = true;
+		CanSZLine = true;
+		CanSVSHold = true;
+		CanCertFP = true;
+		RequiresID = true;
+		MaxModes = 20;
+		MaxLine = 4096;
+	}
+
+	void SendConnect() anope_override
+	{
+		UplinkSocket::Message() << "CAPAB START 1205";
+		UplinkSocket::Message() << "CAPAB CAPABILITIES :CASEMAPPING=" << Config->GetBlock("options")->Get<const Anope::string>("casemap", "ascii");
+		UplinkSocket::Message() << "CAPAB END";
+		UplinkSocket::Message() << "SERVER " << Me->GetName() << " " << Config->Uplinks[Anope::CurrentUplink].password << " 0 " << Me->GetSID() << " :" << Me->GetDescription();
+	}
+
+	void SendSASLMechanisms(std::vector<Anope::string> &mechanisms) anope_override
+	{
+		Anope::string mechlist;
+		for (unsigned i = 0; i < mechanisms.size(); ++i)
+			mechlist += "," + mechanisms[i];
+
+		UplinkSocket::Message(Me) << "METADATA * saslmechlist :" << (mechanisms.empty() ? "" : mechlist.substr(1));
+	}
+
+	void SendSVSKillInternal(const MessageSource &source, User *user, const Anope::string &buf) anope_override
+	{
+		IRCDProto::SendSVSKillInternal(source, user, buf);
+		user->KillInternal(source, buf);
+	}
+
+	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 SendPong(const Anope::string &servname, const Anope::string &who) anope_override
+	{
+		Server *serv = servname.empty() ? NULL : Server::Find(servname);
+		if (!serv)
+			serv = Me;
+
+		UplinkSocket::Message(serv) << "PONG " << who;
+	}
+
+	void SendAkillDel(const XLine *x) anope_override
+	{
+		{
+			/* InspIRCd may support regex bans
+			 * Mask is expected in format: 'n!u@h\sr' and spaces as '\s'
+			 * We remove the '//' and replace '#' and any ' ' with '\s'
+			 */
+			if (x->IsRegex() && Servers::Capab.count("RLINE"))
+			{
+				Anope::string mask = x->mask;
+				if (mask.length() >= 2 && mask[0] == '/' && mask[mask.length() - 1] == '/')
+					mask = mask.substr(1, mask.length() - 2);
+				size_t h = mask.find('#');
+				if (h != Anope::string::npos)
+				{
+					mask = mask.replace(h, 1, "\\s");
+					mask = mask.replace_all_cs(" ", "\\s");
+				}
+				SendDelLine("R", mask);
+				return;
+			}
+			else if (x->IsRegex() || x->HasNickOrReal())
+				return;
+
+			/* ZLine if we can instead */
+			if (x->GetUser() == "*")
+			{
+				cidr addr(x->GetHost());
+				if (addr.valid())
+				{
+					IRCD->SendSZLineDel(x);
+					return;
+				}
+			}
+
+			SendDelLine("G", x->GetUser() + "@" + x->GetHost());
+		}
+	}
+
+	void SendInvite(const MessageSource &source, const Channel *c, User *u) anope_override
+	{
+		UplinkSocket::Message(source) << "INVITE " << u->GetUID() << " " << c->name << " " << c->creation_time;
+	}
+
+	void SendTopic(const MessageSource &source, Channel *c) anope_override
+	{
+		if (Servers::Capab.count("SVSTOPIC"))
+		{
+			UplinkSocket::Message(c->ci->WhoSends()) << "SVSTOPIC " << c->name << " " << c->topic_ts << " " << c->topic_setter << " :" << c->topic;
+		}
+		else
+		{
+			/* If the last time a topic was set is after the TS we want for this topic we must bump this topic's timestamp to now */
+			time_t ts = c->topic_ts;
+			if (c->topic_time > ts)
+				ts = Anope::CurTime;
+			/* But don't modify c->topic_ts, it should remain set to the real TS we want as ci->last_topic_time pulls from it */
+			UplinkSocket::Message(source) << "FTOPIC " << c->name << " " << c->creation_time << " " << ts << " " << c->topic_setter << " :" << c->topic;
+		}
+	}
+
+	void SendVhostDel(User *u) anope_override
+	{
+		UserMode *um = ModeManager::FindUserModeByName("CLOAK");
+
+		if (um && !u->HasMode(um->name))
+			// Just set +x if we can
+			u->SetMode(NULL, um);
+		else
+			// Try to restore cloaked host
+			this->SendChgHostInternal(u->nick, u->chost);
+	}
+
+	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;
+
+		/* InspIRCd may support regex bans, if they do we can send this and forget about it
+		 * Mask is expected in format: 'n!u@h\sr' and spaces as '\s'
+		 * We remove the '//' and replace '#' and any ' ' with '\s'
+		 */
+		if (x->IsRegex() && Servers::Capab.count("RLINE"))
+		{
+			Anope::string mask = x->mask;
+			if (mask.length() >= 2 && mask[0] == '/' && mask[mask.length() - 1] == '/')
+				mask = mask.substr(1, mask.length() - 2);
+			size_t h = mask.find('#');
+			if (h != Anope::string::npos)
+			{
+				mask = mask.replace(h, 1, "\\s");
+				mask = mask.replace_all_cs(" ", "\\s");
+			}
+			SendAddLine("R", mask, timeleft, x->by, x->GetReason());
+			return;
+		}
+		else if (x->IsRegex() || x->HasNickOrReal())
+		{
+			if (!u)
+			{
+				/* No user (this akill was just added), and contains nick and/or realname. Find users that match and ban them */
+				for (user_map::const_iterator it = UserListByNick.begin(); it != UserListByNick.end(); ++it)
+					if (x->manager->Check(it->second, x))
+						this->SendAkill(it->second, x);
+				return;
+			}
+
+			const XLine *old = x;
+
+			if (old->manager->HasEntry("*@" + u->host))
+				return;
+
+			/* We can't akill x as it has a nick and/or realname included, so create a new akill for *@host */
+			x = new XLine("*@" + u->host, old->by, old->expires, old->reason, old->id);
+			old->manager->AddXLine(x);
+
+			Log(Config->GetClient("OperServ"), "akill") << "AKILL: Added an akill for " << x->mask << " because " << u->GetMask() << "#" << u->realname << " matches " << old->mask;
+		}
+
+		/* ZLine if we can instead */
+		if (x->GetUser() == "*")
+		{
+			cidr addr(x->GetHost());
+			if (addr.valid())
+			{
+				IRCD->SendSZLine(u, x);
+				return;
+			}
+		}
+
+		SendAddLine("G", x->GetUser() + "@" + x->GetHost(), timeleft, x->by, x->GetReason());
+	}
+
+	void SendNumericInternal(int numeric, const Anope::string &dest, const Anope::string &buf) anope_override
+	{
+		UplinkSocket::Message() << "NUM " << Me->GetSID() << " " << dest << " " << numeric << " " << buf;
+	}
+
+	void SendModeInternal(const MessageSource &source, const Channel *dest, const Anope::string &buf) anope_override
+	{
+		UplinkSocket::Message(source) << "FMODE " << dest->name << " " << dest->creation_time << " " << buf;
+	}
+
+	void SendClientIntroduction(User *u) anope_override
+	{
+		Anope::string modes = "+" + u->GetModes();
+		UplinkSocket::Message(Me) << "UID " << u->GetUID() << " " << u->timestamp << " " << u->nick << " " << u->host << " " << u->host << " " << u->GetIdent() << " 0.0.0.0 " << u->timestamp << " " << modes << " :" << u->realname;
+		if (modes.find('o') != Anope::string::npos)
+			UplinkSocket::Message(u) << "OPERTYPE :service";
+	}
+
+	void SendServer(const Server *server) anope_override
+	{
+		/* if rsquit is set then we are waiting on a squit */
+		if (rsquit_id.empty() && rsquit_server.empty())
+			UplinkSocket::Message() << "SERVER " << server->GetName() << " " << server->GetSID() << " :" << server->GetDescription();
+	}
+
+	void SendSquit(Server *s, const Anope::string &message) anope_override
+	{
+		if (s != Me)
+		{
+			rsquit_id = s->GetSID();
+			rsquit_server = s->GetName();
+			UplinkSocket::Message() << "RSQUIT " << s->GetName() << " :" << message;
+		}
+		else
+			UplinkSocket::Message() << "SQUIT " << s->GetName() << " :" << message;
+	}
+
+	void SendJoin(User *user, Channel *c, const ChannelStatus *status) anope_override
+	{
+		UplinkSocket::Message(Me) << "FJOIN " << c->name << " " << c->creation_time << " +" << c->GetModes(true, true) << " :," << user->GetUID();
+		/* Note that we can send this with the FJOIN but choose not to
+		 * because the mode stacker will handle this and probably will
+		 * merge these modes with +nrt and other mlocked modes
+		 */
+		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 SendSQLineDel(const XLine *x) anope_override
+	{
+		SendDelLine("Q", x->mask);
+	}
+
+	void SendSQLine(User *u, const 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;
+		SendAddLine("Q", x->mask, timeleft, x->by, x->GetReason());
+	}
+
+	void SendVhost(User *u, const Anope::string &vIdent, const Anope::string &vhost) anope_override
+	{
+		if (!vIdent.empty())
+			this->SendChgIdentInternal(u->nick, vIdent);
+		if (!vhost.empty())
+			this->SendChgHostInternal(u->nick, vhost);
+	}
+
+	void SendSVSHold(const Anope::string &nick, time_t t) anope_override
+	{
+		UplinkSocket::Message(Config->GetClient("NickServ")) << "SVSHOLD " << nick << " " << t << " :Being held for registered user";
+	}
+
+	void SendSVSHoldDel(const Anope::string &nick) anope_override
+	{
+		UplinkSocket::Message(Config->GetClient("NickServ")) << "SVSHOLD " << nick;
+	}
+
+	void SendSZLineDel(const XLine *x) anope_override
+	{
+		SendDelLine("Z", x->GetHost());
+	}
+
+	void SendSZLine(User *u, const 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;
+		SendAddLine("Z", x->GetHost(), timeleft, x->by, x->GetReason());
+	}
+
+	void SendSVSJoin(const MessageSource &source, User *u, const Anope::string &chan, const Anope::string &other) anope_override
+	{
+		UplinkSocket::Message(source) << "SVSJOIN " << u->GetUID() << " " << chan;
+	}
+
+	void SendSVSPart(const MessageSource &source, User *u, const Anope::string &chan, const Anope::string &param) anope_override
+	{
+		if (!param.empty())
+			UplinkSocket::Message(source) << "SVSPART " << u->GetUID() << " " << chan << " :" << param;
+		else
+			UplinkSocket::Message(source) << "SVSPART " << u->GetUID() << " " << chan;
+	}
+
+	void SendSWhois(const MessageSource &bi, const Anope::string &who, const Anope::string &mask) anope_override
+	{
+		User *u = User::Find(who);
+
+		UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " swhois :" << mask;
+	}
+
+	void SendBOB() anope_override
+	{
+		UplinkSocket::Message(Me) << "BURST " << Anope::CurTime;
+		Module *enc = ModuleManager::FindFirstOf(ENCRYPTION);
+		UplinkSocket::Message(Me) << "SINFO version :Anope-" << Anope::Version() << " " << Me->GetName() << " :" << IRCD->GetProtocolName() << " - (" << (enc ? enc->name : "none") << ") -- " << Anope::VersionBuildString();
+		UplinkSocket::Message(Me) << "SINFO fullversion :Anope-" << Anope::Version() << " " << Me->GetName() << " :[" << Me->GetSID() << "] " << IRCD->GetProtocolName() << " - (" << (enc ? enc->name : "none") << ") -- " << Anope::VersionBuildString();
+		UplinkSocket::Message(Me) << "SINFO rawversion :Anope-" << Anope::VersionShort();
+	}
+
+	void SendEOB() anope_override
+	{
+		UplinkSocket::Message(Me) << "ENDBURST";
+	}
+
+	void SendGlobopsInternal(const MessageSource &source, const Anope::string &buf) anope_override
+	{
+		if (Servers::Capab.count("GLOBOPS"))
+			UplinkSocket::Message(source) << "SNONOTICE g :" << buf;
+		else
+			UplinkSocket::Message(source) << "SNONOTICE A :" << buf;
+	}
+
+	void SendLogin(User *u, NickAlias *na) anope_override
+	{
+		/* InspIRCd uses an account to bypass chmode +R, not umode +r, so we can't send this here */
+		if (na->nc->HasExt("UNCONFIRMED"))
+			return;
+
+		UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " accountname :" << na->nc->display;
+		UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " accountid :" << na->nc->GetId();
+	}
+
+	void SendLogout(User *u) anope_override
+	{
+		UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " accountname :";
+		UplinkSocket::Message(Me) << "METADATA " << u->GetUID() << " accountid :";
+	}
+
+	void SendChannel(Channel *c) anope_override
+	{
+		UplinkSocket::Message(Me) << "FJOIN " << c->name << " " << c->creation_time << " +" << c->GetModes(true, true) << " :";
+	}
+
+	void SendSASLMessage(const SASL::Message &message) anope_override
+	{
+		UplinkSocket::Message(Me) << "ENCAP " << message.target.substr(0, 3) << " SASL " << message.source << " " << message.target << " " << message.type << " " << message.data << (message.ext.empty() ? "" : (" " + message.ext));
+	}
+
+	void SendSVSLogin(const Anope::string &uid, const Anope::string &acc, const Anope::string &vident, const Anope::string &vhost) anope_override
+	{
+		UplinkSocket::Message(Me) << "METADATA " << uid << " accountname :" << acc;
+
+		if (!vident.empty())
+			UplinkSocket::Message(Me) << "ENCAP " << uid.substr(0, 3) << " CHGIDENT " << uid << " " << vident;
+		if (!vhost.empty())
+			UplinkSocket::Message(Me) << "ENCAP " << uid.substr(0, 3) << " CHGHOST " << uid << " " << vhost;
+
+		SASLUser su;
+		su.uid = uid;
+		su.acc = acc;
+		su.created = Anope::CurTime;
+
+		for (std::list<SASLUser>::iterator it = saslusers.begin(); it != saslusers.end();)
+		{
+			SASLUser &u = *it;
+
+			if (u.created + 30 < Anope::CurTime || u.uid == uid)
+				it = saslusers.erase(it);
+			else
+				++it;
+		}
+
+		saslusers.push_back(su);
+	}
+
+	bool IsExtbanValid(const Anope::string &mask) anope_override
+	{
+		return mask.length() >= 3 && mask[1] == ':';
+	}
+
+	bool IsIdentValid(const Anope::string &ident) anope_override
+	{
+		if (ident.empty() || ident.length() > Config->GetBlock("networkinfo")->Get<unsigned>("userlen"))
+			return false;
+
+		for (unsigned i = 0; i < ident.length(); ++i)
+		{
+			const char &c = ident[i];
+
+			if (c >= 'A' && c <= '}')
+				continue;
+
+			if ((c >= '0' && c <= '9') || c == '-' || c == '.')
+				continue;
+
+			return false;
+		}
+
+		return true;
+	}
+};
+
+class InspIRCdAutoOpMode : public ChannelModeList
+{
+ public:
+	InspIRCdAutoOpMode(char mode) : ChannelModeList("AUTOOP", mode)
+	{
+	}
+
+	bool IsValid(Anope::string &mask) const anope_override
+	{
+		// We can not validate this because we don't know about the
+		// privileges of the setter so just reject attempts to set it.
+		return false;
+	}
+};
+
+class InspIRCdExtBan : public ChannelModeVirtual<ChannelModeList>
+{
+	char ext;
+
+ public:
+	InspIRCdExtBan(const Anope::string &mname, const Anope::string &basename, char extban) : ChannelModeVirtual<ChannelModeList>(mname, basename)
+		, ext(extban)
+	{
+	}
+
+	ChannelMode *Wrap(Anope::string &param) anope_override
+	{
+		param = Anope::string(ext) + ":" + param;
+		return ChannelModeVirtual<ChannelModeList>::Wrap(param);
+	}
+
+	ChannelMode *Unwrap(ChannelMode *cm, Anope::string &param) anope_override
+	{
+		if (cm->type != MODE_LIST || param.length() < 3 || param[0] != ext || param[1] != ':')
+			return cm;
+
+		param = param.substr(2);
+		return this;
+	}
+};
+
+namespace InspIRCdExtban
+{
+	class EntryMatcher : public InspIRCdExtBan
+	{
+	 public:
+		EntryMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+			Anope::string real_mask = mask.substr(3);
+
+			return Entry(this->name, real_mask).Matches(u);
+		}
+	};
+
+	class ChannelMatcher : public InspIRCdExtBan
+	{
+	 public:
+		ChannelMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+
+			Anope::string channel = mask.substr(3);
+
+			ChannelMode *cm = NULL;
+			if (channel[0] != '#')
+			{
+				char modeChar = ModeManager::GetStatusChar(channel[0]);
+				channel.erase(channel.begin());
+				cm = ModeManager::FindChannelModeByChar(modeChar);
+				if (cm != NULL && cm->type != MODE_STATUS)
+					cm = NULL;
+			}
+
+			Channel *c = Channel::Find(channel);
+			if (c != NULL)
+			{
+				ChanUserContainer *uc = c->FindUser(u);
+				if (uc != NULL)
+					if (cm == NULL || uc->status.HasMode(cm->mchar))
+						return true;
+			}
+
+			return false;
+		}
+	};
+
+	class AccountMatcher : public InspIRCdExtBan
+	{
+	 public:
+		AccountMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+			Anope::string real_mask = mask.substr(2);
+
+			return u->IsIdentified() && real_mask.equals_ci(u->Account()->display);
+		}
+	};
+
+	class RealnameMatcher : public InspIRCdExtBan
+	{
+	 public:
+		RealnameMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+			Anope::string real_mask = mask.substr(2);
+			return Anope::Match(u->realname, real_mask);
+		}
+	};
+
+	class ServerMatcher : public InspIRCdExtBan
+	{
+	 public:
+		ServerMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+			Anope::string real_mask = mask.substr(2);
+			return Anope::Match(u->server->GetName(), real_mask);
+		}
+	};
+
+	class FingerprintMatcher : public InspIRCdExtBan
+	{
+	 public:
+		FingerprintMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+			Anope::string real_mask = mask.substr(2);
+			return !u->fingerprint.empty() && Anope::Match(u->fingerprint, real_mask);
+		}
+	};
+
+	class UnidentifiedMatcher : public InspIRCdExtBan
+	{
+	 public:
+		UnidentifiedMatcher(const Anope::string &mname, const Anope::string &mbase, char c) : InspIRCdExtBan(mname, mbase, c)
+		{
+		}
+
+		bool Matches(User *u, const Entry *e) anope_override
+		{
+			const Anope::string &mask = e->GetMask();
+			Anope::string real_mask = mask.substr(2);
+			return !u->Account() && Entry("BAN", real_mask).Matches(u);
+		}
+	};
+}
+
+class ColonDelimitedParamMode : public ChannelModeParam
+{
+ public:
+	ColonDelimitedParamMode(const Anope::string &modename, char modeChar) : ChannelModeParam(modename, modeChar, true) { }
+
+	bool IsValid(Anope::string &value) const anope_override
+	{
+		return IsValid(value, false);
+	}
+
+	bool IsValid(const Anope::string &value, bool historymode) const
+	{
+		if (value.empty())
+			return false; // empty param is never valid
+
+		Anope::string::size_type pos = value.find(':');
+		if ((pos == Anope::string::npos) || (pos == 0))
+			return false; // no ':' or it's the first char, both are invalid
+
+		Anope::string rest;
+		try
+		{
+			if (convertTo<int>(value, rest, false) <= 0)
+				return false; // negative numbers and zero are invalid
+
+			rest = rest.substr(1);
+			int n;
+			if (historymode)
+			{
+				// For the history mode, the part after the ':' is a duration and it
+				// can be in the user friendly "1d3h20m" format, make sure we accept that
+				n = Anope::DoTime(rest);
+			}
+			else
+				n = convertTo<int>(rest);
+
+			if (n <= 0)
+				return false;
+		}
+		catch (const ConvertException &e)
+		{
+			// conversion error, invalid
+			return false;
+		}
+
+		return true;
+	}
+};
+
+class SimpleNumberParamMode : public ChannelModeParam
+{
+ public:
+	SimpleNumberParamMode(const Anope::string &modename, char modeChar) : ChannelModeParam(modename, modeChar, true) { }
+
+	bool IsValid(Anope::string &value) const anope_override
+	{
+		if (value.empty())
+			return false; // empty param is never valid
+
+		try
+		{
+			if (convertTo<int>(value) <= 0)
+				return false;
+		}
+		catch (const ConvertException &e)
+		{
+			// conversion error, invalid
+			return false;
+		}
+
+		return true;
+	}
+};
+
+class ChannelModeFlood : public ColonDelimitedParamMode
+{
+ public:
+	ChannelModeFlood(char modeChar) : ColonDelimitedParamMode("FLOOD", modeChar) { }
+
+	bool IsValid(Anope::string &value) const anope_override
+	{
+		// The parameter of this mode is a bit different, it may begin with a '*',
+		// ignore it if that's the case
+		Anope::string v = value[0] == '*' ? value.substr(1) : value;
+		return ((!value.empty()) && (ColonDelimitedParamMode::IsValid(v)));
+	}
+};
+
+class ChannelModeHistory : public ColonDelimitedParamMode
+{
+ public:
+	ChannelModeHistory(char modeChar) : ColonDelimitedParamMode("HISTORY", modeChar) { }
+
+	bool IsValid(Anope::string &value) const anope_override
+	{
+		return (ColonDelimitedParamMode::IsValid(value, true));
+	}
+};
+
+class ChannelModeRedirect : public ChannelModeParam
+{
+ public:
+	ChannelModeRedirect(char modeChar) : ChannelModeParam("REDIRECT", modeChar, true) { }
+
+	bool IsValid(Anope::string &value) const anope_override
+	{
+		// The parameter of this mode is a channel, and channel names start with '#'
+		return ((!value.empty()) && (value[0] == '#'));
+	}
+};
+
+struct IRCDMessageAway : Message::Away
+{
+	IRCDMessageAway(Module *creator) : Message::Away(creator, "AWAY") { SetFlag(IRCDMESSAGE_REQUIRE_USER); }
+
+	void Run(MessageSource &source, const std::vector<Anope::string> &params, const Anope::map<Anope::string> &tags) anope_override
+	{
+		std::vector<Anope::string> newparams(params);
+		if (newparams.size() > 1)
+			newparams.erase(newparams.begin());
+
+		Message::Away::Run(source, newparams, tags);
+	}
+};
+
+struct IRCDMessageCapab : Message::Capab
+{
+	struct ModeInfo
+	{
+		// The letter assigned to the mode (e.g. o).
+		char letter;
+
+		// If a prefix mode then the rank of the prefix.
+		unsigned level;
+
+		// The name of the mode.
+		Anope::string name;
+
+		// If a prefix mode then the symbol associated with the prefix.
+		char symbol;
+
+		// The type of mode.
+		Anope::string type;
+
+		ModeInfo() : letter(0), level(0), symbol(0) { }
+	};
+
+	static bool ParseMode(const Anope::string& token, ModeInfo& mode)
+	{
+		// list:ban=b  param-set:limit=l  param:key=k  prefix:30000:op=@o  simple:noextmsg=n
+		//     A   C            A     C        A   C         A     B  C          A        C
+		Anope::string::size_type a = token.find(':');
+		if (a == Anope::string::npos)
+			return false;
+
+		// If the mode is a prefix mode then it also has a rank.
+		mode.type = token.substr(0, a);
+		if (mode.type == "prefix")
+		{
+			Anope::string::size_type b = token.find(':', a + 1);
+			if (b == Anope::string::npos)
+				return false;
+
+			const Anope::string modelevel = token.substr(a + 1, b - a - 1);
+			mode.level = modelevel.is_pos_number_only() ? convertTo<unsigned>(modelevel) : 0;
+			a = b;
+		}
+
+		Anope::string::size_type c = token.find('=', a + 1);
+		if (c == Anope::string::npos)
+			return false;
+
+		mode.name = token.substr(a + 1, c - a - 1);
+		switch (token.length() - c)
+		{
+			case 2:
+				mode.letter = token[c + 1];
+				break;
+			case 3:
+				mode.symbol = token[c + 1];
+				mode.letter = token[c + 2];
+				break;
+			default:
+				return false;
+		}
+
+		Log(LOG_DEBUG) << "Parsed mode: " << "type=" << mode.type << " name=" << mode.name << " level="
+			<< mode.level << " symbol=" << mode.symbol << " letter=" << mode.letter;
+		return true;
+	}
+
+	IRCDMessageCapab(Module *creator) : Message::Capab(creator, "CAPAB") { SetFlag(IRCDMESSAGE_SOFT_LIMIT); }
+
+	void Run(MessageSource &source, const std::vector<Anope::string> &params, const Anope::map<Anope::string> &tags) anope_override
+	{
+		if (params[0].equals_cs("START"))
+		{
+			unsigned int spanningtree_proto_ver = 0;
+			if (params.size() >= 2)
+				spanningtree_proto_ver = params[1].is_pos_number_only() ? convertTo<unsigned>(params[1]) : 0;
+
+			if (spanningtree_proto_ver < 1205)
+			{
+				UplinkSocket::Message() << "ERROR :Protocol mismatch, no or invalid protocol version given in CAPAB START";
+				Anope::QuitReason = "Protocol mismatch, no or invalid protocol version given in CAPAB START";
+				Anope::Quitting = true;
+				return;
+			}
+
+			/* reset CAPAB */
+			Servers::Capab.insert("SERVERS");
+			Servers::Capab.insert("TOPICLOCK");
+			IRCD->CanSVSHold = false;
+			IRCD->DefaultPseudoclientModes = "+I";
+		}
+		else if (params[0].equals_cs("CHANMODES") && params.size() > 1)
+		{
+			spacesepstream ssep(params[1]);
+			Anope::string capab;
+
+			while (ssep.GetToken(capab))
+			{
+				ModeInfo mode;
+				if (!ParseMode(capab, mode))
+					continue;
+
+				ChannelMode *cm = NULL;
+				if (mode.name.equals_cs("admin"))
+					cm = new ChannelModeStatus("PROTECT", mode.letter, mode.symbol, mode.level);
+				else if (mode.name.equals_cs("allowinvite"))
+				{
+					cm = new ChannelMode("ALLINVITE", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("INVITEBAN", "BAN", 'A'));
+				}
+				else if (mode.name.equals_cs("auditorium"))
+					cm = new ChannelMode("AUDITORIUM", mode.letter);
+				else if (mode.name.equals_cs("autoop"))
+					cm = new InspIRCdAutoOpMode(mode.letter);
+				else if (mode.name.equals_cs("ban"))
+					cm = new ChannelModeList("BAN", mode.letter);
+				else if (mode.name.equals_cs("banexception"))
+					cm = new ChannelModeList("EXCEPT", mode.letter);
+				else if (mode.name.equals_cs("blockcaps"))
+				{
+					cm = new ChannelMode("BLOCKCAPS", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("BLOCKCAPSBAN", "BAN", 'B'));
+				}
+				else if (mode.name.equals_cs("blockcolor"))
+				{
+					cm = new ChannelMode("BLOCKCOLOR", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("BLOCKCOLORBAN", "BAN", 'c'));
+				}
+				else if (mode.name.equals_cs("c_registered"))
+					cm = new ChannelModeNoone("REGISTERED", mode.letter);
+				else if (mode.name.equals_cs("censor"))
+					cm = new ChannelMode("CENSOR", mode.letter);
+				else if (mode.name.equals_cs("delayjoin"))
+					cm = new ChannelMode("DELAYEDJOIN", mode.letter);
+				else if (mode.name.equals_cs("delaymsg"))
+					cm = new SimpleNumberParamMode("DELAYMSG", mode.letter);
+				else if (mode.name.equals_cs("filter"))
+					cm = new ChannelModeList("FILTER", mode.letter);
+				else if (mode.name.equals_cs("flood"))
+					cm = new ChannelModeFlood(mode.letter);
+				else if (mode.name.equals_cs("founder"))
+					cm = new ChannelModeStatus("OWNER", mode.letter, mode.symbol, mode.level);
+				else if (mode.name.equals_cs("halfop"))
+					cm = new ChannelModeStatus("HALFOP", mode.letter, mode.symbol, mode.level);
+				else if (mode.name.equals_cs("history"))
+					cm = new ChannelModeHistory(mode.letter);
+				else if (mode.name.equals_cs("invex"))
+					cm = new ChannelModeList("INVITEOVERRIDE", mode.letter);
+				else if (mode.name.equals_cs("inviteonly"))
+					cm = new ChannelMode("INVITE", mode.letter);
+				else if (mode.name.equals_cs("joinflood"))
+					cm = new ColonDelimitedParamMode("JOINFLOOD", mode.letter);
+				else if (mode.name.equals_cs("key"))
+					cm = new ChannelModeKey(mode.letter);
+				else if (mode.name.equals_cs("kicknorejoin"))
+					cm = new SimpleNumberParamMode("NOREJOIN", mode.letter);
+				else if (mode.name.equals_cs("limit"))
+					cm = new ChannelModeParam("LIMIT", mode.letter, true);
+				else if (mode.name.equals_cs("moderated"))
+					cm = new ChannelMode("MODERATED", mode.letter);
+				else if (mode.name.equals_cs("nickflood"))
+					cm = new ColonDelimitedParamMode("NICKFLOOD", mode.letter);
+				else if (mode.name.equals_cs("noctcp"))
+				{
+					cm = new ChannelMode("NOCTCP", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("NOCTCPBAN", "BAN", 'C'));
+				}
+				else if (mode.name.equals_cs("noextmsg"))
+					cm = new ChannelMode("NOEXTERNAL", mode.letter);
+				else if (mode.name.equals_cs("nokick"))
+				{
+					cm = new ChannelMode("NOKICK", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("NOKICKBAN", "BAN", 'Q'));
+				}
+				else if (mode.name.equals_cs("noknock"))
+					cm = new ChannelMode("NOKNOCK", mode.letter);
+				else if (mode.name.equals_cs("nonick"))
+				{
+					cm = new ChannelMode("NONICK", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("NONICKBAN", "BAN", 'N'));
+				}
+				else if (mode.name.equals_cs("nonotice"))
+				{
+					cm = new ChannelMode("NONOTICE", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("NONOTICEBAN", "BAN", 'T'));
+				}
+				else if (mode.name.equals_cs("official-join"))
+					cm = new ChannelModeStatus("OFFICIALJOIN", mode.letter, mode.symbol, mode.level);
+				else if (mode.name.equals_cs("op"))
+					cm = new ChannelModeStatus("OP", mode.letter, mode.symbol, mode.level);
+				else if (mode.name.equals_cs("operonly"))
+					cm = new ChannelModeOperOnly("OPERONLY", mode.letter);
+				else if (mode.name.equals_cs("operprefix"))
+					cm = new ChannelModeStatus("OPERPREFIX", mode.letter, mode.symbol, mode.level);
+				else if (mode.name.equals_cs("permanent"))
+					cm = new ChannelMode("PERM", mode.letter);
+				else if (mode.name.equals_cs("private"))
+					cm = new ChannelMode("PRIVATE", mode.letter);
+				else if (mode.name.equals_cs("redirect"))
+					cm = new ChannelModeRedirect(mode.letter);
+				else if (mode.name.equals_cs("reginvite"))
+					cm = new ChannelMode("REGISTEREDONLY", mode.letter);
+				else if (mode.name.equals_cs("regmoderated"))
+					cm = new ChannelMode("REGMODERATED", mode.letter);
+				else if (mode.name.equals_cs("secret"))
+					cm = new ChannelMode("SECRET", mode.letter);
+				else if (mode.name.equals_cs("sslonly"))
+				{
+					cm = new ChannelMode("SSL", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::FingerprintMatcher("SSLBAN", "BAN", 'z'));
+				}
+				else if (mode.name.equals_cs("stripcolor"))
+				{
+					cm = new ChannelMode("STRIPCOLOR", mode.letter);
+					ModeManager::AddChannelMode(new InspIRCdExtban::EntryMatcher("STRIPCOLORBAN", "BAN", 'S'));
+				}
+				else if (mode.name.equals_cs("topiclock"))
+					cm = new ChannelMode("TOPIC", mode.letter);
+				else if (mode.name.equals_cs("voice"))
+					cm = new ChannelModeStatus("VOICE", mode.letter, mode.symbol, mode.level);
+
+				// Handle unknown modes.
+				else if (mode.type.equals_cs("list"))
+					cm = new ChannelModeList(mode.name.upper(), mode.letter);
+				else if (mode.type.equals_cs("param-set"))
+					cm = new ChannelModeParam(mode.name.upper(), mode.letter, true);
+				else if (mode.type.equals_cs("param"))
+					cm = new ChannelModeParam(mode.name.upper(), mode.letter, false);
+				else if (mode.type.equals_cs("prefix"))
+					cm = new ChannelModeStatus(mode.name.upper