]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/users.cpp
Add a module which implements the HAProxy PROXY v2 protocol.
[user/henk/code/inspircd.git] / src / users.cpp
index 12243c64b074df57ab7442f4b5e8a782d79c5858..442770aca3513118291fbbb64300fb46e106d6ba 100644 (file)
@@ -26,8 +26,6 @@
 #include "inspircd.h"
 #include "xline.h"
 
-already_sent_t LocalUser::already_sent_id = 0;
-
 bool User::IsNoticeMaskSet(unsigned char sm)
 {
        if (!isalpha(sm))
@@ -35,64 +33,80 @@ bool User::IsNoticeMaskSet(unsigned char sm)
        return (snomasks[sm-65]);
 }
 
-bool User::IsModeSet(unsigned char m)
+bool User::IsModeSet(unsigned char m) const
 {
        ModeHandler* mh = ServerInstance->Modes->FindMode(m, MODETYPE_USER);
        return (mh && modes[mh->GetId()]);
 }
 
-const char* User::FormatModes(bool showparameters)
+std::string User::GetModeLetters(bool includeparams) const
 {
-       static std::string data;
+       std::string ret(1, '+');
        std::string params;
-       data.clear();
 
-       for (unsigned char n = 0; n < 64; n++)
+       for (unsigned char i = 'A'; i < 'z'; i++)
        {
-               ModeHandler* mh = ServerInstance->Modes->FindMode(n + 65, MODETYPE_USER);
-               if (mh && IsModeSet(mh))
+               const ModeHandler* const mh = ServerInstance->Modes.FindMode(i, MODETYPE_USER);
+               if ((!mh) || (!IsModeSet(mh)))
+                       continue;
+
+               ret.push_back(mh->GetModeChar());
+               if ((includeparams) && (mh->NeedsParam(true)))
                {
-                       data.push_back(n + 65);
-                       if (showparameters && mh->GetNumParams(true))
-                       {
-                               std::string p = mh->GetUserParameter(this);
-                               if (p.length())
-                                       params.append(" ").append(p);
-                       }
+                       const std::string val = mh->GetUserParameter(this);
+                       if (!val.empty())
+                               params.append(1, ' ').append(val);
                }
        }
-       data += params;
-       return data.c_str();
+
+       ret += params;
+       return ret;
 }
 
-User::User(const std::string& uid, Server* srv, int type)
-       : uuid(uid), server(srv), usertype(type)
+User::User(const std::string& uid, Server* srv, UserType type)
+       : age(ServerInstance->Time())
+       , signon(0)
+       , uuid(uid)
+       , server(srv)
+       , registered(REG_NONE)
+       , quitting(false)
+       , usertype(type)
 {
-       age = ServerInstance->Time();
-       signon = 0;
-       registered = 0;
-       quitting = false;
        client_sa.sa.sa_family = AF_UNSPEC;
 
        ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New UUID for user: %s", uuid.c_str());
 
-       if (!ServerInstance->Users->uuidlist.insert(std::make_pair(uuid, this)).second)
-               throw CoreException("Duplicate UUID "+std::string(uuid)+" in User constructor");
+       // Do not insert FakeUsers into the uuidlist so FindUUID() won't return them which is the desired behavior
+       if (type != USERTYPE_SERVER)
+       {
+               if (!ServerInstance->Users.uuidlist.insert(std::make_pair(uuid, this)).second)
+                       throw CoreException("Duplicate UUID in User constructor: " + uuid);
+       }
 }
 
 LocalUser::LocalUser(int myfd, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* servaddr)
-       : User(ServerInstance->UIDGen.GetUID(), ServerInstance->FakeClient->server, USERTYPE_LOCAL), eh(this),
-       bytes_in(0), bytes_out(0), cmds_in(0), cmds_out(0), nping(0), CommandFloodPenalty(0),
-       already_sent(0)
-{
-       exempt = quitting_sendq = false;
-       idle_lastmsg = 0;
+       : User(ServerInstance->UIDGen.GetUID(), ServerInstance->FakeClient->server, USERTYPE_LOCAL)
+       , eh(this)
+       , bytes_in(0)
+       , bytes_out(0)
+       , cmds_in(0)
+       , cmds_out(0)
+       , quitting_sendq(false)
+       , lastping(true)
+       , exempt(false)
+       , nping(0)
+       , idle_lastmsg(0)
+       , CommandFloodPenalty(0)
+       , already_sent(0)
+{
+       signon = ServerInstance->Time();
+       // The user's default nick is their UUID
+       nick = uuid;
        ident = "unknown";
-       lastping = 0;
        eh.SetFd(myfd);
        memcpy(&client_sa, client, sizeof(irc::sockets::sockaddrs));
        memcpy(&server_sa, servaddr, sizeof(irc::sockets::sockaddrs));
-       dhost = host = GetIPString();
+       ChangeRealHost(GetIPString(), true);
 }
 
 User::~User()
@@ -105,7 +119,7 @@ const std::string& User::MakeHost()
                return this->cached_makehost;
 
        // XXX: Is there really a need to cache this?
-       this->cached_makehost = ident + "@" + host;
+       this->cached_makehost = ident + "@" + GetRealHost();
        return this->cached_makehost;
 }
 
@@ -125,7 +139,7 @@ const std::string& User::GetFullHost()
                return this->cached_fullhost;
 
        // XXX: Is there really a need to cache this?
-       this->cached_fullhost = nick + "!" + ident + "@" + dhost;
+       this->cached_fullhost = nick + "!" + ident + "@" + GetDisplayedHost();
        return this->cached_fullhost;
 }
 
@@ -135,45 +149,24 @@ const std::string& User::GetFullRealHost()
                return this->cached_fullrealhost;
 
        // XXX: Is there really a need to cache this?
-       this->cached_fullrealhost = nick + "!" + ident + "@" + host;
+       this->cached_fullrealhost = nick + "!" + ident + "@" + GetRealHost();
        return this->cached_fullrealhost;
 }
 
-InviteList& LocalUser::GetInviteList()
-{
-       RemoveExpiredInvites();
-       return invites;
-}
-
-bool LocalUser::RemoveInvite(Channel* chan)
-{
-       Invitation* inv = Invitation::Find(chan, this);
-       if (inv)
-       {
-               delete inv;
-               return true;
-       }
-       return false;
-}
-
-void LocalUser::RemoveExpiredInvites()
-{
-       Invitation::Find(NULL, this);
-}
-
-bool User::HasModePermission(unsigned char, ModeType)
+bool User::HasModePermission(const ModeHandler* mh) const
 {
        return true;
 }
 
-bool LocalUser::HasModePermission(unsigned char mode, ModeType type)
+bool LocalUser::HasModePermission(const ModeHandler* mh) const
 {
        if (!this->IsOper())
                return false;
 
+       const unsigned char mode = mh->GetModeChar();
        if (mode < 'A' || mode > ('A' + 64)) return false;
 
-       return ((type == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
+       return ((mh->GetModeType() == MODETYPE_USER ? oper->AllowedUserModes : oper->AllowedChanModes))[(mode - 'A')];
 
 }
 /*
@@ -196,12 +189,7 @@ bool LocalUser::HasPermission(const std::string &command)
                return false;
        }
 
-       if (oper->AllowedOperCommands.find(command) != oper->AllowedOperCommands.end())
-               return true;
-       else if (oper->AllowedOperCommands.find("*") != oper->AllowedOperCommands.end())
-               return true;
-
-       return false;
+       return oper->AllowedOperCommands.Contains(command);
 }
 
 bool User::HasPrivPermission(const std::string &privstr, bool noisy)
@@ -218,14 +206,8 @@ bool LocalUser::HasPrivPermission(const std::string &privstr, bool noisy)
                return false;
        }
 
-       if (oper->AllowedPrivs.find(privstr) != oper->AllowedPrivs.end())
-       {
-               return true;
-       }
-       else if (oper->AllowedPrivs.find("*") != oper->AllowedPrivs.end())
-       {
+       if (oper->AllowedPrivs.Contains(privstr))
                return true;
-       }
 
        if (noisy)
                this->WriteNotice("Oper type " + oper->name + " does not have access to priv " + privstr);
@@ -245,37 +227,56 @@ void UserIOHandler::OnDataReady()
                        user->nick.c_str(), (unsigned long)recvq.length(), user->MyClass->GetRecvqMax());
                return;
        }
+
        unsigned long sendqmax = ULONG_MAX;
        if (!user->HasPrivPermission("users/flood/increased-buffers"))
                sendqmax = user->MyClass->GetSendqSoftMax();
+
        unsigned long penaltymax = ULONG_MAX;
        if (!user->HasPrivPermission("users/flood/no-fakelag"))
                penaltymax = user->MyClass->GetPenaltyThreshold() * 1000;
 
+       // The maximum size of an IRC message minus the terminating CR+LF.
+       const size_t maxmessage = ServerInstance->Config->Limits.MaxLine - 2;
+       std::string line;
+       line.reserve(maxmessage);
+
+       bool eol_found;
+       std::string::size_type qpos;
+
        while (user->CommandFloodPenalty < penaltymax && getSendQSize() < sendqmax)
        {
-               std::string line;
-               line.reserve(ServerInstance->Config->Limits.MaxLine);
-               std::string::size_type qpos = 0;
-               while (qpos < recvq.length())
+               qpos = 0;
+               eol_found = false;
+
+               const size_t qlen = recvq.length();
+               while (qpos < qlen)
                {
                        char c = recvq[qpos++];
                        switch (c)
                        {
-                       case '\0':
-                               c = ' ';
-                               break;
-                       case '\r':
-                               continue;
-                       case '\n':
-                               goto eol_found;
+                               case '\0':
+                                       c = ' ';
+                                       break;
+                               case '\r':
+                                       continue;
+                               case '\n':
+                                       eol_found = true;
+                                       break;
                        }
-                       if (line.length() < ServerInstance->Config->Limits.MaxLine - 2)
+
+                       if (eol_found)
+                               break;
+
+                       if (line.length() < maxmessage)
                                line.push_back(c);
                }
-               // if we got here, the recvq ran out before we found a newline
-               return;
-eol_found:
+
+               // if we return here, we haven't found a newline and make no modifications to recvq
+               // so we can wait for more data
+               if (!eol_found)
+                       return;
+
                // just found a newline. Terminate the string, and pull it out of recvq
                recvq.erase(0, qpos);
 
@@ -287,7 +288,11 @@ eol_found:
                ServerInstance->Parser.ProcessBuffer(line, user);
                if (user->quitting)
                        return;
+
+               // clear() does not reclaim memory associated with the string, so our .reserve() call is safe
+               line.clear();
        }
+
        if (user->CommandFloodPenalty >= penaltymax && !user->MyClass->fakelag)
                ServerInstance->Users->QuitUser(user, "Excess Flood");
 }
@@ -310,6 +315,12 @@ void UserIOHandler::AddWriteBuf(const std::string &data)
        WriteData(data);
 }
 
+void UserIOHandler::OnSetEndPoint(const irc::sockets::sockaddrs& server, const irc::sockets::sockaddrs& client)
+{
+       memcpy(&user->server_sa, &server, sizeof(irc::sockets::sockaddrs));
+       user->SetClientIP(client);
+}
+
 void UserIOHandler::OnError(BufferedSocketError)
 {
        ServerInstance->Users->QuitUser(user, getError());
@@ -320,7 +331,7 @@ CullResult User::cull()
        if (!quitting)
                ServerInstance->Users->QuitUser(this, "Culled without QuitUser");
 
-       if (client_sa.sa.sa_family != AF_UNSPEC)
+       if (client_sa.family() != AF_UNSPEC)
                ServerInstance->Users->RemoveCloneCounts(this);
 
        return Extensible::cull();
@@ -328,7 +339,6 @@ CullResult User::cull()
 
 CullResult LocalUser::cull()
 {
-       ClearInvites();
        eh.cull();
        return User::cull();
 }
@@ -337,8 +347,7 @@ CullResult FakeUser::cull()
 {
        // Fake users don't quit, they just get culled.
        quitting = true;
-       // Fake users are not inserted into UserManager::clientlist, they're only in the uuidlist
-       // and they are removed from there by the linking mod when the server splits
+       // Fake users are not inserted into UserManager::clientlist or uuidlist, so we don't need to modify those here
        return User::cull();
 }
 
@@ -362,17 +371,16 @@ void User::Oper(OperInfo* info)
                LocalUser* l = IS_LOCAL(this);
                std::string vhost = oper->getConfig("vhost");
                if (!vhost.empty())
-                       l->ChangeDisplayedHost(vhost.c_str());
+                       l->ChangeDisplayedHost(vhost);
                std::string opClass = oper->getConfig("class");
                if (!opClass.empty())
                        l->SetClass(opClass);
        }
 
        ServerInstance->SNO->WriteToSnoMask('o',"%s (%s@%s) is now an IRC operator of type %s (using oper '%s')",
-               nick.c_str(), ident.c_str(), host.c_str(), oper->name.c_str(), opername.c_str());
-       this->WriteNumeric(RPL_YOUAREOPER, ":You are now %s %s", strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->name.c_str());
+               nick.c_str(), ident.c_str(), GetRealHost().c_str(), oper->name.c_str(), opername.c_str());
+       this->WriteNumeric(RPL_YOUAREOPER, InspIRCd::Format("You are now %s %s", strchr("aeiouAEIOU", oper->name[0]) ? "an" : "a", oper->name.c_str()));
 
-       ServerInstance->Logs->Log("OPER", LOG_DEFAULT, "%s opered as type: %s", GetFullRealHost().c_str(), oper->name.c_str());
        ServerInstance->Users->all_opers.push_back(this);
 
        // Expand permissions from config for faster lookup
@@ -384,8 +392,8 @@ void User::Oper(OperInfo* info)
 
 void OperInfo::init()
 {
-       AllowedOperCommands.clear();
-       AllowedPrivs.clear();
+       AllowedOperCommands.Clear();
+       AllowedPrivs.Clear();
        AllowedUserModes.reset();
        AllowedChanModes.reset();
        AllowedUserModes['o' - 'A'] = true; // Call me paranoid if you want.
@@ -393,19 +401,9 @@ void OperInfo::init()
        for(std::vector<reference<ConfigTag> >::iterator iter = class_blocks.begin(); iter != class_blocks.end(); ++iter)
        {
                ConfigTag* tag = *iter;
-               std::string mycmd, mypriv;
-               /* Process commands */
-               irc::spacesepstream CommandList(tag->getString("commands"));
-               while (CommandList.GetToken(mycmd))
-               {
-                       AllowedOperCommands.insert(mycmd);
-               }
 
-               irc::spacesepstream PrivList(tag->getString("privs"));
-               while (PrivList.GetToken(mypriv))
-               {
-                       AllowedPrivs.insert(mypriv);
-               }
+               AllowedOperCommands.AddList(tag->getString("commands"));
+               AllowedPrivs.AddList(tag->getString("privs"));
 
                std::string modes = tag->getString("usermodes");
                for (std::string::const_iterator c = modes.begin(); c != modes.end(); ++c)
@@ -465,6 +463,7 @@ void User::UnOper()
 
        ModeHandler* opermh = ServerInstance->Modes->FindMode('o', MODETYPE_USER);
        this->SetMode(opermh, false);
+       FOREACH_MOD(OnPostDeoper, (this));
 }
 
 /*
@@ -503,7 +502,7 @@ void LocalUser::CheckClass(bool clone_count)
                }
        }
 
-       this->nping = ServerInstance->Time() + a->GetPingTime() + ServerInstance->Config->dns_timeout;
+       this->nping = ServerInstance->Time() + a->GetPingTime();
 }
 
 bool LocalUser::CheckLines(bool doZline)
@@ -546,12 +545,12 @@ void LocalUser::FullConnect()
        if (quitting)
                return;
 
-       this->WriteNumeric(RPL_WELCOME, ":Welcome to the %s IRC Network %s", ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str());
-       this->WriteNumeric(RPL_YOURHOSTIS, ":Your host is %s, running version %s", ServerInstance->Config->ServerName.c_str(), INSPIRCD_BRANCH);
-       this->WriteNumeric(RPL_SERVERCREATED, ":This server was created %s %s", __TIME__, __DATE__);
+       this->WriteNumeric(RPL_WELCOME, InspIRCd::Format("Welcome to the %s IRC Network %s", ServerInstance->Config->Network.c_str(), GetFullRealHost().c_str()));
+       this->WriteNumeric(RPL_YOURHOSTIS, InspIRCd::Format("Your host is %s, running version %s", ServerInstance->Config->ServerName.c_str(), INSPIRCD_BRANCH));
+       this->WriteNumeric(RPL_SERVERCREATED, InspIRCd::TimeString(ServerInstance->startup_time, "This server was created %H:%M:%S %b %d %Y"));
 
-       const std::string& modelist = ServerInstance->Modes->GetModeListFor004Numeric();
-       this->WriteNumeric(RPL_SERVERVERSION, "%s %s %s", ServerInstance->Config->ServerName.c_str(), INSPIRCD_BRANCH, modelist.c_str());
+       const TR1NS::array<std::string, 3>& modelist = ServerInstance->Modes->GetModeListFor004Numeric();
+       this->WriteNumeric(RPL_SERVERVERSION, ServerInstance->Config->ServerName, INSPIRCD_BRANCH, modelist[0], modelist[1], modelist[2]);
 
        ServerInstance->ISupport.SendTo(this);
 
@@ -597,6 +596,7 @@ void LocalUser::FullConnect()
 void User::InvalidateCache()
 {
        /* Invalidate cache */
+       cachedip.clear();
        cached_fullhost.clear();
        cached_hostip.clear();
        cached_makehost.clear();
@@ -636,16 +636,13 @@ bool User::ChangeNick(const std::string& newnick, time_t newts)
                        if (InUse->registered != REG_ALL)
                        {
                                /* force the camper to their UUID, and ask them to re-send a NICK. */
-                               InUse->WriteFrom(InUse, "NICK %s", InUse->uuid.c_str());
-                               InUse->WriteNumeric(ERR_NICKNAMEINUSE, "%s :Nickname overruled.", InUse->nick.c_str());
-
-                               InUse->registered &= ~REG_NICK;
-                               InUse->ChangeNick(InUse->uuid);
+                               LocalUser* const localuser = static_cast<LocalUser*>(InUse);
+                               localuser->OverruleNick();
                        }
                        else
                        {
                                /* No camping, tell the incoming user  to stop trying to change nick ;p */
-                               this->WriteNumeric(ERR_NICKNAMEINUSE, "%s :Nickname is already in use.", newnick.c_str());
+                               this->WriteNumeric(ERR_NICKNAMEINUSE, newnick, "Nickname is already in use.");
                                return false;
                        }
                }
@@ -654,8 +651,8 @@ bool User::ChangeNick(const std::string& newnick, time_t newts)
        }
 
        if (this->registered == REG_ALL)
-               this->WriteCommon("NICK %s",newnick.c_str());
-       std::string oldnick = nick;
+               this->WriteCommon("NICK %s", newnick.c_str());
+       const std::string oldnick = nick;
        nick = newnick;
 
        InvalidateCache();
@@ -668,24 +665,26 @@ bool User::ChangeNick(const std::string& newnick, time_t newts)
        return true;
 }
 
+void LocalUser::OverruleNick()
+{
+       this->WriteFrom(this, "NICK %s", this->uuid.c_str());
+       this->WriteNumeric(ERR_NICKNAMEINUSE, this->nick, "Nickname overruled.");
+
+       // Clear the bit before calling ChangeNick() to make it NOT run the OnUserPostNick() hook
+       this->registered &= ~REG_NICK;
+       this->ChangeNick(this->uuid);
+}
+
 int LocalUser::GetServerPort()
 {
-       switch (this->server_sa.sa.sa_family)
-       {
-               case AF_INET6:
-                       return htons(this->server_sa.in6.sin6_port);
-               case AF_INET:
-                       return htons(this->server_sa.in4.sin_port);
-       }
-       return 0;
+       return this->server_sa.port();
 }
 
 const std::string& User::GetIPString()
 {
-       int port;
        if (cachedip.empty())
        {
-               irc::sockets::satoap(client_sa, cachedip, port);
+               cachedip = client_sa.addr();
                /* IP addresses starting with a : on irc are a Bad Thing (tm) */
                if (cachedip[0] == ':')
                        cachedip.insert(cachedip.begin(),1,'0');
@@ -694,10 +693,25 @@ const std::string& User::GetIPString()
        return cachedip;
 }
 
+const std::string& User::GetHost(bool uncloak) const
+{
+       return uncloak ? GetRealHost() : GetDisplayedHost();
+}
+
+const std::string& User::GetDisplayedHost() const
+{
+       return displayhost.empty() ? realhost : displayhost;
+}
+
+const std::string& User::GetRealHost() const
+{
+       return realhost;
+}
+
 irc::sockets::cidr_mask User::GetCIDRMask()
 {
-       int range = 0;
-       switch (client_sa.sa.sa_family)
+       unsigned char range = 0;
+       switch (client_sa.family())
        {
                case AF_INET6:
                        range = ServerInstance->Config->c_ipv6_range;
@@ -709,24 +723,22 @@ irc::sockets::cidr_mask User::GetCIDRMask()
        return irc::sockets::cidr_mask(client_sa, range);
 }
 
-bool User::SetClientIP(const char* sip, bool recheck_eline)
+bool User::SetClientIP(const std::string& address, bool recheck_eline)
 {
-       cachedip.clear();
-       cached_hostip.clear();
-       return irc::sockets::aptosa(sip, 0, client_sa);
+       this->InvalidateCache();
+       return irc::sockets::aptosa(address, 0, client_sa);
 }
 
 void User::SetClientIP(const irc::sockets::sockaddrs& sa, bool recheck_eline)
 {
-       cachedip.clear();
-       cached_hostip.clear();
+       this->InvalidateCache();
        memcpy(&client_sa, &sa, sizeof(irc::sockets::sockaddrs));
 }
 
-bool LocalUser::SetClientIP(const char* sip, bool recheck_eline)
+bool LocalUser::SetClientIP(const std::string& address, bool recheck_eline)
 {
        irc::sockets::sockaddrs sa;
-       if (!irc::sockets::aptosa(sip, 0, sa))
+       if (!irc::sockets::aptosa(address, 0, sa))
                // Invalid
                return false;
 
@@ -761,10 +773,12 @@ void LocalUser::Write(const std::string& text)
        if (!SocketEngine::BoundsCheckFd(&eh))
                return;
 
-       if (text.length() > ServerInstance->Config->Limits.MaxLine - 2)
+       // The maximum size of an IRC message minus the terminating CR+LF.
+       const size_t maxmessage = ServerInstance->Config->Limits.MaxLine - 2;
+       if (text.length() > maxmessage)
        {
-               // this should happen rarely or never. Crop the string at 512 and try again.
-               std::string try_again(0, ServerInstance->Config->Limits.MaxLine - 2);
+               // This should happen rarely or never. Crop the string at MaxLine and try again.
+               std::string try_again(text, 0, maxmessage);
                Write(try_again);
                return;
        }
@@ -774,8 +788,9 @@ void LocalUser::Write(const std::string& text)
        eh.AddWriteBuf(text);
        eh.AddWriteBuf(wide_newline);
 
-       ServerInstance->stats.Sent += text.length() + 2;
-       this->bytes_out += text.length() + 2;
+       const size_t bytessent = text.length() + 2;
+       ServerInstance->stats.Sent += bytessent;
+       this->bytes_out += bytessent;
        this->cmds_out++;
 }
 
@@ -808,25 +823,33 @@ void User::WriteCommand(const char* command, const std::string& text)
        this->WriteServ(command + (this->registered & REG_NICK ? " " + this->nick : " *") + " " + text);
 }
 
-void User::WriteNumeric(unsigned int numeric, const char* text, ...)
+namespace
 {
-       std::string textbuffer;
-       VAFORMAT(textbuffer, text, text);
-       this->WriteNumeric(numeric, textbuffer);
+       std::string BuildNumeric(const std::string& source, User* targetuser, unsigned int num, const std::vector<std::string>& params)
+       {
+               const char* const target = (targetuser->registered & REG_NICK ? targetuser->nick.c_str() : "*");
+               std::string raw = InspIRCd::Format(":%s %03u %s", source.c_str(), num, target);
+               if (!params.empty())
+               {
+                       for (std::vector<std::string>::const_iterator i = params.begin(); i != params.end()-1; ++i)
+                               raw.append(1, ' ').append(*i);
+                       raw.append(" :").append(params.back());
+               }
+               return raw;
+       }
 }
 
-void User::WriteNumeric(unsigned int numeric, const std::string &text)
+void User::WriteNumeric(const Numeric::Numeric& numeric)
 {
        ModResult MOD_RESULT;
 
-       FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric, text));
+       FIRST_MOD_RESULT(OnNumeric, MOD_RESULT, (this, numeric));
 
        if (MOD_RESULT == MOD_RES_DENY)
                return;
 
-       const std::string message = InspIRCd::Format(":%s %03u %s %s", ServerInstance->Config->ServerName.c_str(),
-               numeric, this->registered & REG_NICK ? this->nick.c_str() : "*", text.c_str());
-       this->Write(message);
+       const std::string& servername = (numeric.GetServer() ? numeric.GetServer()->GetName() : ServerInstance->Config->ServerName);
+       this->Write(BuildNumeric(servername, this, numeric.GetNumeric(), numeric.GetParams()));
 }
 
 void User::WriteFrom(User *user, const std::string &text)
@@ -845,6 +868,16 @@ void User::WriteFrom(User *user, const char* text, ...)
        this->WriteFrom(user, textbuffer);
 }
 
+void User::WriteRemoteNotice(const std::string& text)
+{
+       ServerInstance->PI->SendUserNotice(this, text);
+}
+
+void LocalUser::WriteRemoteNotice(const std::string& text)
+{
+       WriteNotice(text);
+}
+
 namespace
 {
        class WriteCommonRawHandler : public User::ForEachNeighborHandler
@@ -896,7 +929,7 @@ void User::ForEachNeighbor(ForEachNeighborHandler& handler, bool include_self)
        FOREACH_MOD(OnBuildNeighborList, (this, include_chans, exceptions));
 
        // Get next id, guaranteed to differ from the already_sent field of all users
-       const already_sent_t newid = ++LocalUser::already_sent_id;
+       const already_sent_t newid = ServerInstance->Users.NextAlreadySentId();
 
        // Handle exceptions first
        for (std::map<User*, bool>::const_iterator i = exceptions.begin(); i != exceptions.end(); ++i)
@@ -931,42 +964,9 @@ void User::ForEachNeighbor(ForEachNeighborHandler& handler, bool include_self)
        }
 }
 
-void LocalUser::SendText(const std::string& line)
-{
-       Write(line);
-}
-
-void RemoteUser::SendText(const std::string& line)
-{
-       ServerInstance->PI->PushToClient(this, line);
-}
-
-void FakeUser::SendText(const std::string& line)
+void User::WriteRemoteNumeric(const Numeric::Numeric& numeric)
 {
-}
-
-void User::SendText(const char *text, ...)
-{
-       std::string line;
-       VAFORMAT(line, text, text);
-       SendText(line);
-}
-
-void User::SendText(const std::string& linePrefix, std::stringstream& textStream)
-{
-       std::string line;
-       std::string word;
-       while (textStream >> word)
-       {
-               size_t lineLength = linePrefix.length() + line.length() + word.length() + 3; // "\s\n\r"
-               if (lineLength > ServerInstance->Config->Limits.MaxLine)
-               {
-                       SendText(linePrefix + line);
-                       line.clear();
-               }
-               line += " " + word;
-       }
-       SendText(linePrefix + line);
+       WriteNumeric(numeric);
 }
 
 /* return 0 or 1 depending if users u and u2 share one or more common channels
@@ -1015,7 +1015,7 @@ bool User::ChangeName(const std::string& gecos)
 
 bool User::ChangeDisplayedHost(const std::string& shost)
 {
-       if (dhost == shost)
+       if (GetDisplayedHost() == shost)
                return true;
 
        if (IS_LOCAL(this))
@@ -1028,15 +1028,46 @@ bool User::ChangeDisplayedHost(const std::string& shost)
 
        FOREACH_MOD(OnChangeHost, (this,shost));
 
-       this->dhost.assign(shost, 0, ServerInstance->Config->Limits.MaxHost);
+       if (realhost == shost)
+               this->displayhost.clear();
+       else
+               this->displayhost.assign(shost, 0, ServerInstance->Config->Limits.MaxHost);
+
        this->InvalidateCache();
 
        if (IS_LOCAL(this))
-               this->WriteNumeric(RPL_YOURDISPLAYEDHOST, "%s :is now your displayed host", this->dhost.c_str());
+               this->WriteNumeric(RPL_YOURDISPLAYEDHOST, this->GetDisplayedHost(), "is now your displayed host");
 
        return true;
 }
 
+void User::ChangeRealHost(const std::string& host, bool resetdisplay)
+{
+       // If the real host is the new host and we are not resetting the
+       // display host then we have nothing to do.
+       const bool changehost = (realhost != host);
+       if (!changehost && !resetdisplay)
+               return;
+       
+       // If the displayhost is not set and we are not resetting it then
+       // we need to copy it to the displayhost field.
+       if (displayhost.empty() && !resetdisplay)
+               displayhost = realhost;
+
+       // If the displayhost is the new host or we are resetting it then
+       // we clear its contents to save memory.
+       else if (displayhost == host || resetdisplay)
+               displayhost.clear();
+
+       // If we are just resetting the display host then we don't need to
+       // do anything else.
+       if (!changehost)
+               return;
+
+       realhost = host;
+       this->InvalidateCache();
+}
+
 bool User::ChangeIdent(const std::string& newident)
 {
        if (this->ident == newident)
@@ -1103,7 +1134,7 @@ void LocalUser::SetClass(const std::string &explicit_name)
 
                        /* check if host matches.. */
                        if (!InspIRCd::MatchCIDR(this->GetIPString(), c->GetHost(), NULL) &&
-                           !InspIRCd::MatchCIDR(this->host, c->GetHost(), NULL))
+                           !InspIRCd::MatchCIDR(this->GetRealHost(), c->GetHost(), NULL))
                        {
                                ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "No host match (for %s)", c->GetHost().c_str());
                                continue;
@@ -1120,14 +1151,14 @@ void LocalUser::SetClass(const std::string &explicit_name)
                        }
 
                        /* if it requires a port ... */
-                       int port = c->config->getInt("port");
-                       if (port)
+                       if (!c->ports.empty())
                        {
-                               ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires port (%d)", port);
-
                                /* and our port doesn't match, fail. */
-                               if (this->GetServerPort() != port)
+                               if (!c->ports.count(this->GetServerPort()))
+                               {
+                                       ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Requires a different port, skipping");
                                        continue;
+                               }
                        }
 
                        if (regdone && !c->config->getString("password").empty())
@@ -1169,15 +1200,15 @@ void User::PurgeEmptyChannels()
 
 const std::string& FakeUser::GetFullHost()
 {
-       if (!ServerInstance->Config->HideWhoisServer.empty())
-               return ServerInstance->Config->HideWhoisServer;
+       if (!ServerInstance->Config->HideServer.empty())
+               return ServerInstance->Config->HideServer;
        return server->GetName();
 }
 
 const std::string& FakeUser::GetFullRealHost()
 {
-       if (!ServerInstance->Config->HideWhoisServer.empty())
-               return ServerInstance->Config->HideWhoisServer;
+       if (!ServerInstance->Config->HideServer.empty())
+               return ServerInstance->Config->HideServer;
        return server->GetName();
 }
 
@@ -1190,13 +1221,36 @@ ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask)
 }
 
 ConnectClass::ConnectClass(ConfigTag* tag, char t, const std::string& mask, const ConnectClass& parent)
-       : config(tag), type(t), fakelag(parent.fakelag), name("unnamed"),
-       registration_timeout(parent.registration_timeout), host(mask), pingtime(parent.pingtime),
-       softsendqmax(parent.softsendqmax), hardsendqmax(parent.hardsendqmax), recvqmax(parent.recvqmax),
-       penaltythreshold(parent.penaltythreshold), commandrate(parent.commandrate),
-       maxlocal(parent.maxlocal), maxglobal(parent.maxglobal), maxconnwarn(parent.maxconnwarn), maxchans(parent.maxchans),
-       limit(parent.limit), resolvehostnames(parent.resolvehostnames)
 {
+       Update(&parent);
+       name = "unnamed";
+       type = t;
+       host = mask;
+
+       // Connect classes can inherit from each other but this is problematic for modules which can't use
+       // ConnectClass::Update so we build a hybrid tag containing all of the values set on this class as
+       // well as the parent class.
+       ConfigItems* items = NULL;
+       config = ConfigTag::create(tag->tag, tag->src_name, tag->src_line, items);
+
+       const ConfigItems& parentkeys = parent.config->getItems();
+       for (ConfigItems::const_iterator piter = parentkeys.begin(); piter != parentkeys.end(); ++piter)
+       {
+               // The class name and parent name are not inherited
+               if (stdalgo::string::equalsci(piter->first, "name") || stdalgo::string::equalsci(piter->first, "parent"))
+                       continue;
+
+               // Store the item in the config tag. If this item also
+               // exists in the child it will be overwritten.
+               (*items)[piter->first] = piter->second;
+       }
+
+       const ConfigItems& childkeys = tag->getItems();
+       for (ConfigItems::const_iterator citer = childkeys.begin(); citer != childkeys.end(); ++citer)
+       {
+               // This will overwrite the parent value if present.
+               (*items)[citer->first] = citer->second;
+       }
 }
 
 void ConnectClass::Update(const ConnectClass* src)
@@ -1219,4 +1273,5 @@ void ConnectClass::Update(const ConnectClass* src)
        maxchans = src->maxchans;
        limit = src->limit;
        resolvehostnames = src->resolvehostnames;
+       ports = src->ports;
 }