/* Ratbox IRCD functions
  *
  * (C) 2003-2022 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"
 
 static Anope::string UplinkSID;
 
 static ServiceReference<IRCDProto> hybrid("IRCDProto", "hybrid");
 
 class RatboxProto : public IRCDProto
 {
 	BotInfo *FindIntroduced()
 	{
 		BotInfo *bi = Config->GetClient("OperServ");
 
 		if (bi && bi->introduced)
 			return bi;
 
 		for (botinfo_map::iterator it = BotListByNick->begin(), it_end = BotListByNick->end(); it != it_end; ++it)
 			if (it->second->introduced)
 				return it->second;
 
 		return NULL;
 	}
 
  public:
 	RatboxProto(Module *creator) : IRCDProto(creator, "Ratbox 3.0+")
 	{
 		DefaultPseudoclientModes = "+oiS";
 		CanSNLine = true;
 		CanSQLine = true;
 		CanSQLineChannel = true;
 		CanSZLine = true;
 		RequiresID = true;
 		MaxModes = 4;
 	}
 
 	void SendSVSKillInternal(const MessageSource &source, User *targ, const Anope::string &reason) anope_override { hybrid->SendSVSKillInternal(source, targ, reason); }
 	void SendGlobalNotice(BotInfo *bi, const Server *dest, const Anope::string &msg) anope_override { hybrid->SendGlobalNotice(bi, dest, msg); }
 	void SendGlobalPrivmsg(BotInfo *bi, const Server *dest, const Anope::string &msg) anope_override { hybrid->SendGlobalPrivmsg(bi, dest, msg); }
 	void SendSGLine(User *u, const XLine *x) anope_override { hybrid->SendSGLine(u, x); }
 	void SendSGLineDel(const XLine *x) anope_override { hybrid->SendSGLineDel(x); }
 	void SendAkill(User *u, XLine *x) anope_override { hybrid->SendAkill(u, x); }
 	void SendAkillDel(const XLine *x) anope_override { hybrid->SendAkillDel(x); }
 	void SendJoin(User *user, Channel *c, const ChannelStatus *status) anope_override { hybrid->SendJoin(user, c, status); }
 	void SendServer(const Server *server) anope_override { hybrid->SendServer(server); }
 	void SendModeInternal(const MessageSource &source, User *u, const Anope::string &buf) anope_override { hybrid->SendModeInternal(source, u, buf); }
 	void SendChannel(Channel *c) anope_override { hybrid->SendChannel(c); }
 	bool IsIdentValid(const Anope::string &ident) anope_override { return hybrid->IsIdentValid(ident); }
 
 	void SendGlobopsInternal(const MessageSource &source, const Anope::string &buf) anope_override
 	{
 		UplinkSocket::Message(source) << "OPERWALL :" << buf;
 	}
 
 	void SendSQLine(User *, 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;
 
 		UplinkSocket::Message(FindIntroduced()) << "ENCAP * RESV " << timeleft << " " << x->mask << " 0 :" << x->GetReason();
 	}
 
 	void SendSQLineDel(const XLine *x) anope_override
 	{
 		UplinkSocket::Message(Config->GetClient("OperServ")) << "ENCAP * UNRESV " << x->mask;
 	}
 
 	void SendConnect() anope_override
 	{
 		UplinkSocket::Message() << "PASS " << Config->Uplinks[Anope::CurrentUplink].password << " TS 6 :" << Me->GetSID();
 		/*
 		  QS     - Can handle quit storm removal
 		  EX     - Can do channel +e exemptions
 		  CHW    - Can do channel wall @#
 		  IE     - Can do invite exceptions
 		  GLN    - Can do GLINE message
 		  KNOCK  - supports KNOCK
 		  TB     - supports topic burst
 		  ENCAP  - supports ENCAP
 		*/
 		UplinkSocket::Message() << "CAPAB :QS EX CHW IE GLN TB ENCAP";
 		/* Make myself known to myself in the serverlist */
 		SendServer(Me);
 		/*
 		 * SVINFO
 		 *	  parv[0] = sender prefix
 		 *	  parv[1] = TS_CURRENT for the server
 		 *	  parv[2] = TS_MIN for the server
 		 *	  parv[3] = server is standalone or connected to non-TS only
 		 *	  parv[4] = server's idea of UTC time
 		 */
 		UplinkSocket::Message() << "SVINFO 6 3 0 :" << Anope::CurTime;
 	}
 
 	void SendClientIntroduction(User *u) anope_override
 	{
 		Anope::string modes = "+" + u->GetModes();
 		UplinkSocket::Message(Me) << "UID " << u->nick << " 1 " << u->timestamp << " " << modes << " " << u->GetIdent() << " " << u->host << " 0 " << u->GetUID() << " :" << u->realname;
 	}
 
 	void SendLogin(User *u, NickAlias *na) anope_override
 	{
 		if (na->nc->HasExt("UNCONFIRMED"))
 			return;
 
 		UplinkSocket::Message(Me) << "ENCAP * SU " << u->GetUID() << " " << na->nc->display;
 	}
 
 	void SendLogout(User *u) anope_override
 	{
 		UplinkSocket::Message(Me) << "ENCAP * SU " << u->GetUID();
 	}
 
 	void SendTopic(const MessageSource &source, Channel *c) anope_override
 	{
 		BotInfo *bi = source.GetBot();
 		bool needjoin = c->FindUser(bi) == NULL;
 
 		if (needjoin)
 		{
 			ChannelStatus status;
 
 			status.AddMode('o');
 			bi->Join(c, &status);
 		}
 
 		IRCDProto::SendTopic(source, c);
 
 		if (needjoin)
 			bi->Part(c);
 	}
 };
 
 struct IRCDMessageEncap : IRCDMessage
 {
 	IRCDMessageEncap(Module *creator) : IRCDMessage(creator, "ENCAP", 3) { SetFlag(IRCDMESSAGE_REQUIRE_USER); }
 
 	// Debug: Received: :00BAAAAAB ENCAP * LOGIN Adam
 	void Run(MessageSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		if (params[1] == "LOGIN" || params[1] == "SU")
 		{
 			User *u = source.GetUser();
 
 			NickCore *nc = NickCore::Find(params[2]);
 			if (!nc)
 				return;
 			u->Login(nc);
 
 			/* Sometimes a user connects, we send them the usual "this nickname is registered" mess (if
 			 * their server isn't syncing) and then we receive this.. so tell them about it.
 			 */
 			if (u->server->IsSynced())
 				u->SendMessage(Config->GetClient("NickServ"), _("You have been logged in as \002%s\002."), nc->display.c_str());
 		}
 	}
 };
 
 struct IRCDMessageJoin : Message::Join
 {
 	IRCDMessageJoin(Module *creator) : Message::Join(creator, "JOIN") { }
 
 	void Run(MessageSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		if (params.size() == 1 && params[0] == "0")
 			return Message::Join::Run(source, params);
 
 		if (params.size() < 2)
 			return;
 
 		std::vector<Anope::string> p = params;
 		p.erase(p.begin());
 
 		return Message::Join::Run(source, p);
 	}
 };
 
 struct IRCDMessagePass : IRCDMessage
 {
 	IRCDMessagePass(Module *creator) : IRCDMessage(creator, "PASS", 4) { SetFlag(IRCDMESSAGE_REQUIRE_SERVER); }
 
 	void Run(MessageSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		UplinkSID = params[3];
 	}
 };
 
 struct IRCDMessageServer : IRCDMessage
 {
 	IRCDMessageServer(Module *creator) : IRCDMessage(creator, "SERVER", 3) { SetFlag(IRCDMESSAGE_REQUIRE_SERVER); }
 
 	// SERVER hades.arpa 1 :ircd-ratbox test server
 	void Run(MessageSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		// Servers other then our immediate uplink are introduced via SID
 		if (params[1] != "1")
 			return;
 		new Server(source.GetServer() == NULL ? Me : source.GetServer(), params[0], 1, params[2], UplinkSID);
 		IRCD->SendPing(Me->GetName(), params[0]);
 	}
 };
 
 struct IRCDMessageTBurst : IRCDMessage
 {
 	IRCDMessageTBurst(Module *creator) : IRCDMessage(creator, "TB", 3) { SetFlag(IRCDMESSAGE_SOFT_LIMIT); }
 
 	/*
 	 * params[0] = channel
 	 * params[1] = ts
 	 * params[2] = topic OR who set the topic
 	 * params[3] = topic if params[2] isn't the topic
 	 */
 	void Run(MessageSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		time_t topic_time = Anope::string(params[1]).is_pos_number_only() ? convertTo<time_t>(params[1]) : Anope::CurTime;
 		Channel *c = Channel::Find(params[0]);
 
 		if (!c)
 			return;
 
 		const Anope::string &setter = params.size() == 4 ? params[2] : "",
 			topic = params.size() == 4 ? params[3] : params[2];
 
 		c->ChangeTopicInternal(NULL, setter, topic, topic_time);
 	}
 };
 
 struct IRCDMessageUID : IRCDMessage
 {
 	IRCDMessageUID(Module *creator) : IRCDMessage(creator, "UID", 9) { SetFlag(IRCDMESSAGE_REQUIRE_SERVER); }
 
 	// :42X UID Adam 1 1348535644 +aow Adam 192.168.0.5 192.168.0.5 42XAAAAAB :Adam
 	void Run(MessageSource &source, const std::vector<Anope::string> &params) anope_override
 	{
 		/* Source is always the server */
 		User::OnIntroduce(params[0], params[4], params[5], "", params[6], source.GetServer(), params[8], params[2].is_pos_number_only() ? convertTo<time_t>(params[2]) : 0, params[3], params[7], NULL);
 	}
 };
 
 class ProtoRatbox : public Module
 {
 	Module *m_hybrid;
 
 	RatboxProto ircd_proto;
 
 	/* Core message handlers */
 	Message::Away message_away;
 	Message::Capab message_capab;
 	Message::Error message_error;
 	Message::Invite message_invite;
 	Message::Kick message_kick;
 	Message::Kill message_kill;
 	Message::Mode message_mode;
 	Message::MOTD message_motd;
 	Message::Notice message_notice;
 	Message::Part message_part;
 	Message::Ping message_ping;
 	Message::Privmsg message_privmsg;
 	Message::Quit message_quit;
 	Message::SQuit message_squit;
 	Message::Stats message_stats;
 	Message::Time message_time;
 	Message::Topic message_topic;
 	Message::Version message_version;
 	Message::Whois message_whois;
 
 	/* Hybrid message handlers */
 	ServiceAlias message_bmask, message_nick, message_pong, message_sid,
 			message_sjoin, message_tmode;
 
 	/* Our message handlers */
 	IRCDMessageEncap message_encap;
 	IRCDMessageJoin message_join;
 	IRCDMessagePass message_pass;
 	IRCDMessageServer message_server;
 	IRCDMessageTBurst message_tburst;
 	IRCDMessageUID message_uid;
 
 	void AddModes()
 	{
 		/* user modes */
 		ModeManager::AddUserMode(new UserModeOperOnly("ADMIN", 'a'));
 		ModeManager::AddUserMode(new UserModeOperOnly("BOT", 'b'));
 		// c/C = con
 		// d = debug?
 		ModeManager::AddUserMode(new UserMode("DEAF", 'D'));
 		// f = full?
 		ModeManager::AddUserMode(new UserMode("CALLERID", 'g'));
 		ModeManager::AddUserMode(new UserMode("INVIS", 'i'));
 		// k = skill?
 		ModeManager::AddUserMode(new UserModeOperOnly("LOCOPS", 'l'));
 		// n = nchange
 		ModeManager::AddUserMode(new UserModeOperOnly("OPER", 'o'));
 		// r = rej
 		ModeManager::AddUserMode(new UserModeOperOnly("SNOMASK", 's'));
 		ModeManager::AddUserMode(new UserModeNoone("PROTECTED", 'S'));
 		// u = unauth?
 		ModeManager::AddUserMode(new UserMode("WALLOPS", 'w'));
 		// x = external?
 		// y = spy?
 		ModeManager::AddUserMode(new UserModeOperOnly("OPERWALLS", 'z'));
 		// Z = spy?
 
 		/* b/e/I */
 		ModeManager::AddChannelMode(new ChannelModeList("BAN", 'b'));
 		ModeManager::AddChannelMode(new ChannelModeList("EXCEPT", 'e'));
 		ModeManager::AddChannelMode(new ChannelModeList("INVITEOVERRIDE", 'I'));
 
 		/* v/h/o/a/q */
 		ModeManager::AddChannelMode(new ChannelModeStatus("VOICE", 'v', '+', 0));
 		ModeManager::AddChannelMode(new ChannelModeStatus("OP", 'o', '@', 1));
 
 		/* l/k */
 		ModeManager::AddChannelMode(new ChannelModeParam("LIMIT", 'l', true));
 		ModeManager::AddChannelMode(new ChannelModeKey('k'));
 
 		/* channel modes */
 		ModeManager::AddChannelMode(new ChannelMode("INVITE", 'i'));
 		ModeManager::AddChannelMode(new ChannelMode("MODERATED", 'm'));
 		ModeManager::AddChannelMode(new ChannelMode("NOEXTERNAL", 'n'));
 		ModeManager::AddChannelMode(new ChannelMode("PRIVATE", 'p'));
 		ModeManager::AddChannelMode(new ChannelMode("REGISTEREDONLY", 'r'));
 		ModeManager::AddChannelMode(new ChannelMode("SECRET", 's'));
 		ModeManager::AddChannelMode(new ChannelMode("TOPIC", 't'));
 		ModeManager::AddChannelMode(new ChannelMode("SSL", 'S'));
 	}
 
  public:
 	ProtoRatbox(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, PROTOCOL | VENDOR),
 		ircd_proto(this),
 		message_away(this), message_capab(this), message_error(this), message_invite(this), message_kick(this),
 		message_kill(this), message_mode(this), message_motd(this), message_notice(this), message_part(this),
 		message_ping(this), message_privmsg(this), message_quit(this), message_squit(this), message_stats(this),
 		message_time(this), message_topic(this), message_version(this), message_whois(this),
 
 		message_bmask("IRCDMessage", "ratbox/bmask", "hybrid/bmask"), message_nick("IRCDMessage", "ratbox/nick", "hybrid/nick"),
 		message_pong("IRCDMessage", "ratbox/pong", "hybrid/pong"), message_sid("IRCDMessage", "ratbox/sid", "hybrid/sid"),
 		message_sjoin("IRCDMessage", "ratbox/sjoin", "hybrid/sjoin"), message_tmode("IRCDMessage", "ratbox/tmode", "hybrid/tmode"),
 
 		message_encap(this), message_join(this), message_pass(this), message_server(this), message_tburst(this), message_uid(this)
 	{
 
 		if (ModuleManager::LoadModule("hybrid", User::Find(creator)) != MOD_ERR_OK)
 			throw ModuleException("Unable to load hybrid");
 		m_hybrid = ModuleManager::FindModule("hybrid");
 		if (!m_hybrid)
 			throw ModuleException("Unable to find hybrid");
 		if (!hybrid)
 			throw ModuleException("No protocol interface for hybrid");
 
 		this->AddModes();
 	}
 
 	~ProtoRatbox()
 	{
 		m_hybrid = ModuleManager::FindModule("hybrid");
 		ModuleManager::UnloadModule(m_hybrid, NULL);
 	}
 };
 
 MODULE_INIT(ProtoRatbox)

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