X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fusermanager.cpp;h=c7aaa5c1134e54c9240c1ff0557bfa2112cd8d0c;hb=e0dc7691c4cff3a38bc12adf10b3709d8c4901ba;hp=1918b5c4c1cc43a985c13fc3880c376297f41045;hpb=f3f443f085e922fa2bb5393c46d02722ad05879d;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/usermanager.cpp b/src/usermanager.cpp index 1918b5c4c..c7aaa5c11 100644 --- a/src/usermanager.cpp +++ b/src/usermanager.cpp @@ -1,10 +1,17 @@ /* * InspIRCd -- Internet Relay Chat Daemon * + * Copyright (C) 2019 iwalkalone + * Copyright (C) 2019 Matt Schatz + * Copyright (C) 2013-2016, 2018 Attila Molnar + * Copyright (C) 2013, 2018-2020 Sadie Powell + * Copyright (C) 2013, 2015 Adam + * Copyright (C) 2013 Daniel Vassdal + * Copyright (C) 2012, 2019 Robby * Copyright (C) 2009-2010 Daniel De Graaf - * Copyright (C) 2008 Dennis Friis + * Copyright (C) 2009 Uli Schlachter + * Copyright (C) 2008-2010 Craig Edwards * Copyright (C) 2008 Robin Burchell - * Copyright (C) 2008 Craig Edwards * * This file is part of InspIRCd. InspIRCd is free software: you can * redistribute it and/or modify it under the terms of the GNU General Public @@ -22,83 +29,168 @@ #include "inspircd.h" #include "xline.h" -#include "bancache.h" +#include "iohook.h" -UserManager::UserManager() - : unregistered_count(0), local_count(0) -{ -} - -/* add a client connection to the sockets list */ -void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) +namespace { - /* NOTE: Calling this one parameter constructor for User automatically - * allocates a new UUID and places it in the hash_map. - */ - LocalUser* New = NULL; - try + class WriteCommonQuit : public User::ForEachNeighborHandler { - New = new LocalUser(socket, client, server); - } - catch (...) + ClientProtocol::Messages::Quit quitmsg; + ClientProtocol::Event quitevent; + ClientProtocol::Messages::Quit operquitmsg; + ClientProtocol::Event operquitevent; + + void Execute(LocalUser* user) CXX11_OVERRIDE + { + user->Send(user->IsOper() ? operquitevent : quitevent); + } + + public: + WriteCommonQuit(User* user, const std::string& msg, const std::string& opermsg) + : quitmsg(user, msg) + , quitevent(ServerInstance->GetRFCEvents().quit, quitmsg) + , operquitmsg(user, opermsg) + , operquitevent(ServerInstance->GetRFCEvents().quit, operquitmsg) + { + user->ForEachNeighbor(*this, false); + } + }; + + void CheckPingTimeout(LocalUser* user) { - ServerInstance->Logs->Log("USERS", DEFAULT,"*** WTF *** Duplicated UUID! -- Crack smoking monkeys have been unleashed."); - ServerInstance->SNO->WriteToSnoMask('a', "WARNING *** Duplicate UUID allocated!"); - return; - } - UserIOHandler* eh = &New->eh; + // Check if it is time to ping the user yet. + if (ServerInstance->Time() < user->nextping) + return; + + // This user didn't answer the last ping, remove them. + if (!user->lastping) + { + ModResult res; + FIRST_MOD_RESULT(OnConnectionFail, res, (user, I_ERR_TIMEOUT)); + if (res == MOD_RES_ALLOW) + { + // A module is preventing this user from being timed out. + user->lastping = 1; + user->nextping = ServerInstance->Time() + user->MyClass->GetPingTime(); + return; + } + + time_t secs = ServerInstance->Time() - (user->nextping - user->MyClass->GetPingTime()); + const std::string message = "Ping timeout: " + ConvToStr(secs) + (secs != 1 ? " seconds" : " second"); + ServerInstance->Users.QuitUser(user, message); + return; + } - /* Give each of the modules an attempt to hook the user for I/O */ - FOREACH_MOD(I_OnHookIO, OnHookIO(eh, via)); + // Send a ping to the client. + ClientProtocol::Messages::Ping ping; + user->Send(ServerInstance->GetRFCEvents().ping, ping); + user->lastping = 0; + user->nextping = ServerInstance->Time() + user->MyClass->GetPingTime(); + } - if (eh->GetIOHook()) + void CheckRegistrationTimeout(LocalUser* user) { - try + if (user->GetClass() && (ServerInstance->Time() > (user->signon + user->GetClass()->GetRegTimeout()))) { - eh->GetIOHook()->OnStreamSocketAccept(eh, client, server); + // Either the user did not send NICK/USER or a module blocked registration in + // OnCheckReady until the client timed out. + ServerInstance->Users.QuitUser(user, "Registration timeout"); } - catch (CoreException& modexcept) + } + + void CheckModulesReady(LocalUser* user) + { + ModResult res; + FIRST_MOD_RESULT(OnCheckReady, res, (user)); + if (res == MOD_RES_PASSTHRU) { - ServerInstance->Logs->Log("SOCKET", DEBUG,"%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason()); + // User has sent NICK/USER and modules are ready. + user->FullConnect(); + return; } + + // If the user has been quit in OnCheckReady then we shouldn't quit + // them again for having a registration timeout. + if (!user->quitting) + CheckRegistrationTimeout(user); + } +} + +UserManager::UserManager() + : already_sent_id(0) + , unregistered_count(0) +{ +} + +UserManager::~UserManager() +{ + for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); ++i) + { + delete i->second; } +} + +void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) +{ + // User constructor allocates a new UUID for the user and inserts it into the uuidlist + LocalUser* const New = new LocalUser(socket, client, server); + UserIOHandler* eh = &New->eh; - ServerInstance->Logs->Log("USERS", DEBUG,"New user fd: %d", socket); + ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New user fd: %d", socket); this->unregistered_count++; + this->clientlist[New->nick] = New; + this->AddClone(New); + this->local_users.push_front(New); + FOREACH_MOD(OnUserInit, (New)); - /* The users default nick is their UUID */ - New->nick = New->uuid; - (*(this->clientlist))[New->nick] = New; + if (!SocketEngine::AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE)) + { + ServerInstance->Logs->Log("USERS", LOG_DEBUG, "Internal error on new connection"); + this->QuitUser(New, "Internal error handling connection"); + return; + } - New->registered = REG_NONE; - New->signon = ServerInstance->Time(); - New->lastping = 1; + // If this listener has an IO hook provider set then tell it about the connection + for (ListenSocket::IOHookProvList::iterator i = via->iohookprovs.begin(); i != via->iohookprovs.end(); ++i) + { + ListenSocket::IOHookProvRef& iohookprovref = *i; + if (!iohookprovref) + { + if (!iohookprovref.GetProvider().empty()) + { + ServerInstance->Logs->Log("USERS", LOG_DEBUG, "Non-existent I/O hook '%s' in tag at %s", + iohookprovref.GetProvider().c_str(), + i == via->iohookprovs.begin() ? "hook" : "sslprofile", + via->bind_tag->getTagLocation().c_str()); + this->QuitUser(New, "Internal error handling connection"); + return; + } + continue; + } - ServerInstance->Users->AddLocalClone(New); - ServerInstance->Users->AddGlobalClone(New); + iohookprovref->OnAccept(eh, client, server); - New->localuseriter = this->local_users.insert(local_users.end(), New); - local_count++; + // IOHook could have encountered a fatal error, e.g. if the TLS ClientHello + // was already in the queue and there was no common TLS version. + if (!eh->getError().empty()) + { + QuitUser(New, eh->getError()); + return; + } + } - if ((this->local_users.size() > ServerInstance->Config->SoftLimit) || (this->local_users.size() >= (unsigned int)ServerInstance->SE->GetMaxFds())) + if (this->local_users.size() > ServerInstance->Config->SoftLimit) { ServerInstance->SNO->WriteToSnoMask('a', "Warning: softlimit value has been reached: %d clients", ServerInstance->Config->SoftLimit); this->QuitUser(New,"No more connections allowed"); return; } - /* - * First class check. We do this again in FullConnect after DNS is done, and NICK/USER is recieved. - * See my note down there for why this is required. DO NOT REMOVE. :) -- w00t - */ + // First class check. We do this again in LocalUser::FullConnect() after DNS is done, and NICK/USER is received. New->SetClass(); - - /* - * Check connect class settings and initialise settings into User. - * This will be done again after DNS resolution. -- w00t - */ - New->CheckClass(); + // If the user doesn't have an acceptable connect class CheckClass() quits them + New->CheckClass(ServerInstance->Config->CCOnConnect); if (New->quitting) return; @@ -109,20 +201,25 @@ void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs */ New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL); - if (BanCacheHit *b = ServerInstance->BanCache->GetHit(New->GetIPString())) + BanCacheHit* const b = ServerInstance->BanCache.GetHit(New->GetIPString()); + if (b) { if (!b->Type.empty() && !New->exempt) { /* user banned */ - ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Positive hit for ") + New->GetIPString()); - if (!ServerInstance->Config->MoronBanner.empty()) - New->WriteServ("NOTICE %s :*** %s", New->nick.c_str(), ServerInstance->Config->MoronBanner.c_str()); - this->QuitUser(New, b->Reason); + ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Positive hit for " + New->GetIPString()); + if (!ServerInstance->Config->XLineMessage.empty()) + New->WriteNumeric(ERR_YOUREBANNEDCREEP, ServerInstance->Config->XLineMessage); + + if (ServerInstance->Config->HideBans) + this->QuitUser(New, b->Type + "-lined", &b->Reason); + else + this->QuitUser(New, b->Reason); return; } else { - ServerInstance->Logs->Log("BANCACHE", DEBUG, std::string("BanCache: Negative hit for ") + New->GetIPString()); + ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Negative hit for " + New->GetIPString()); } } else @@ -139,260 +236,200 @@ void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs } } - if (!ServerInstance->SE->AddFd(eh, FD_WANT_FAST_READ | FD_WANT_EDGE_WRITE)) - { - ServerInstance->Logs->Log("USERS", DEBUG,"Internal error on new connection"); - this->QuitUser(New, "Internal error handling connection"); - } - - /* NOTE: even if dns lookups are *off*, we still need to display this. - * BOPM and other stuff requires it. - */ - New->WriteServ("NOTICE Auth :*** Looking up your hostname..."); if (ServerInstance->Config->RawLog) - New->WriteServ("NOTICE Auth :*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded."); + New->WriteNotice("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded."); - FOREACH_MOD(I_OnSetUserIP,OnSetUserIP(New)); - if (New->quitting) - return; - - FOREACH_MOD(I_OnUserInit,OnUserInit(New)); - - if (ServerInstance->Config->NoUserDns) - { - New->WriteServ("NOTICE %s :*** Skipping host resolution (disabled by server administrator)", New->nick.c_str()); - New->dns_done = true; - } - else - { - New->StartDNSLookup(); - } + FOREACH_MOD(OnSetUserIP, (New)); + if (!New->quitting) + FOREACH_MOD(OnUserPostInit, (New)); } -void UserManager::QuitUser(User *user, const std::string &quitreason, const char* operreason) +void UserManager::QuitUser(User* user, const std::string& quitmessage, const std::string* operquitmessage) { if (user->quitting) { - ServerInstance->Logs->Log("USERS", DEFAULT, "ERROR: Tried to quit quitting user: " + user->nick); + ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Tried to quit quitting user: " + user->nick); return; } if (IS_SERVER(user)) { - ServerInstance->Logs->Log("USERS", DEFAULT, "ERROR: Tried to quit server user: " + user->nick); + ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Tried to quit server user: " + user->nick); return; } - user->quitting = true; + std::string quitmsg(quitmessage); + std::string operquitmsg; + if (operquitmessage) + operquitmsg.assign(*operquitmessage); - ServerInstance->Logs->Log("USERS", DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitreason.c_str()); - user->Write("ERROR :Closing link: (%s@%s) [%s]", user->ident.c_str(), user->host.c_str(), *operreason ? operreason : quitreason.c_str()); + LocalUser* const localuser = IS_LOCAL(user); + if (localuser) + { + ModResult MOD_RESULT; + FIRST_MOD_RESULT(OnUserPreQuit, MOD_RESULT, (localuser, quitmsg, operquitmsg)); + if (MOD_RESULT == MOD_RES_DENY) + return; + } - std::string reason; - std::string oper_reason; - reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit); - if (operreason && *operreason) - oper_reason.assign(operreason, 0, ServerInstance->Config->Limits.MaxQuit); - else - oper_reason = quitreason; + if (quitmsg.length() > ServerInstance->Config->Limits.MaxQuit) + quitmsg.erase(ServerInstance->Config->Limits.MaxQuit + 1); + + if (operquitmsg.empty()) + operquitmsg.assign(quitmsg); + else if (operquitmsg.length() > ServerInstance->Config->Limits.MaxQuit) + operquitmsg.erase(ServerInstance->Config->Limits.MaxQuit + 1); + + user->quitting = true; + ServerInstance->Logs->Log("USERS", LOG_DEBUG, "QuitUser: %s=%s '%s'", user->uuid.c_str(), user->nick.c_str(), quitmessage.c_str()); + if (localuser) + { + ClientProtocol::Messages::Error errormsg(InspIRCd::Format("Closing link: (%s@%s) [%s]", user->ident.c_str(), user->GetRealHost().c_str(), operquitmsg.c_str())); + localuser->Send(ServerInstance->GetRFCEvents().error, errormsg); + } ServerInstance->GlobalCulls.AddItem(user); if (user->registered == REG_ALL) { - FOREACH_MOD(I_OnUserQuit,OnUserQuit(user, reason, oper_reason)); - user->WriteCommonQuit(reason, oper_reason); + FOREACH_MOD(OnUserQuit, (user, quitmsg, operquitmsg)); + WriteCommonQuit(user, quitmsg, operquitmsg); } - - if (user->registered != REG_ALL) - if (ServerInstance->Users->unregistered_count) - ServerInstance->Users->unregistered_count--; + else + unregistered_count--; if (IS_LOCAL(user)) { LocalUser* lu = IS_LOCAL(user); - FOREACH_MOD(I_OnUserDisconnect,OnUserDisconnect(lu)); + FOREACH_MOD(OnUserDisconnect, (lu)); lu->eh.Close(); - } - /* - * this must come before the ServerInstance->SNO->WriteToSnoMaskso that it doesnt try to fill their buffer with anything - * if they were an oper with +s +qQ. - */ - if (user->registered == REG_ALL) - { - if (IS_LOCAL(user)) - { - if (!user->quietquit) - { - ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s (%s) [%s]", - user->GetFullRealHost().c_str(), user->GetIPString(), oper_reason.c_str()); - } - } - else - { - if ((!ServerInstance->SilentULine(user->server)) && (!user->quietquit)) - { - ServerInstance->SNO->WriteToSnoMask('Q',"Client exiting on server %s: %s (%s) [%s]", - user->server.c_str(), user->GetFullRealHost().c_str(), user->GetIPString(), oper_reason.c_str()); - } - } - user->AddToWhoWas(); + if (lu->registered == REG_ALL) + ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s (%s) [%s]", user->GetFullRealHost().c_str(), user->GetIPString().c_str(), operquitmsg.c_str()); + local_users.erase(lu); } - user_hash::iterator iter = this->clientlist->find(user->nick); - - if (iter != this->clientlist->end()) - this->clientlist->erase(iter); - else - ServerInstance->Logs->Log("USERS", DEFAULT, "ERROR: Nick not found in clientlist, cannot remove: " + user->nick); - - ServerInstance->Users->uuidlist->erase(user->uuid); -} - + if (!clientlist.erase(user->nick)) + ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Nick not found in clientlist, cannot remove: " + user->nick); -void UserManager::AddLocalClone(User *user) -{ - local_clones[user->GetCIDRMask()]++; + uuidlist.erase(user->uuid); + user->PurgeEmptyChannels(); + user->UnOper(); } -void UserManager::AddGlobalClone(User *user) +void UserManager::AddClone(User* user) { - global_clones[user->GetCIDRMask()]++; + CloneCounts& counts = clonemap[user->GetCIDRMask()]; + counts.global++; + if (IS_LOCAL(user)) + counts.local++; } void UserManager::RemoveCloneCounts(User *user) { - if (IS_LOCAL(user)) + CloneMap::iterator it = clonemap.find(user->GetCIDRMask()); + if (it != clonemap.end()) { - clonemap::iterator x = local_clones.find(user->GetCIDRMask()); - if (x != local_clones.end()) + CloneCounts& counts = it->second; + counts.global--; + if (counts.global == 0) { - x->second--; - if (!x->second) - { - local_clones.erase(x); - } + // No more users from this IP, remove entry from the map + clonemap.erase(it); + return; } - } - clonemap::iterator y = global_clones.find(user->GetCIDRMask()); - if (y != global_clones.end()) - { - y->second--; - if (!y->second) - { - global_clones.erase(y); - } + if (IS_LOCAL(user)) + counts.local--; } } -unsigned long UserManager::GlobalCloneCount(User *user) -{ - clonemap::iterator x = global_clones.find(user->GetCIDRMask()); - if (x != global_clones.end()) - return x->second; - else - return 0; -} - -unsigned long UserManager::LocalCloneCount(User *user) -{ - clonemap::iterator x = local_clones.find(user->GetCIDRMask()); - if (x != local_clones.end()) - return x->second; - else - return 0; -} - -/* this function counts all users connected, wether they are registered or NOT. */ -unsigned int UserManager::UserCount() +void UserManager::RehashCloneCounts() { - /* - * XXX: Todo: - * As part of this restructuring, move clientlist/etc fields into usermanager. - * -- w00t - */ - return this->clientlist->size(); -} - -/* this counts only registered users, so that the percentages in /MAP don't mess up */ -unsigned int UserManager::RegisteredUserCount() -{ - return this->clientlist->size() - this->UnregisteredUserCount(); -} + clonemap.clear(); -/* return how many users are opered */ -unsigned int UserManager::OperCount() -{ - return this->all_opers.size(); -} - -/* return how many users are unregistered */ -unsigned int UserManager::UnregisteredUserCount() -{ - return this->unregistered_count; + const user_hash& hash = ServerInstance->Users.GetUsers(); + for (user_hash::const_iterator i = hash.begin(); i != hash.end(); ++i) + { + User* u = i->second; + AddClone(u); + } } -/* return how many local registered users there are */ -unsigned int UserManager::LocalUserCount() +const UserManager::CloneCounts& UserManager::GetCloneCounts(User* user) const { - /* Doesnt count unregistered clients */ - return (this->local_count - this->UnregisteredUserCount()); + CloneMap::const_iterator it = clonemap.find(user->GetCIDRMask()); + if (it != clonemap.end()) + return it->second; + else + return zeroclonecounts; } void UserManager::ServerNoticeAll(const char* text, ...) { - if (!text) - return; + std::string message; + VAFORMAT(message, text, text); + ClientProtocol::Messages::Privmsg msg(ClientProtocol::Messages::Privmsg::nocopy, ServerInstance->FakeClient, ServerInstance->Config->GetServerName(), message, MSG_NOTICE); + ClientProtocol::Event msgevent(ServerInstance->GetRFCEvents().privmsg, msg); - char textbuffer[MAXBUF]; - char formatbuffer[MAXBUF]; - va_list argsPtr; - va_start (argsPtr, text); - vsnprintf(textbuffer, MAXBUF, text, argsPtr); - va_end(argsPtr); - - snprintf(formatbuffer,MAXBUF,"NOTICE $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer); - - for (LocalUserList::const_iterator i = local_users.begin(); i != local_users.end(); i++) + for (LocalList::const_iterator i = local_users.begin(); i != local_users.end(); ++i) { - User* t = *i; - t->WriteServ(std::string(formatbuffer)); + LocalUser* user = *i; + user->Send(msgevent); } } -void UserManager::ServerPrivmsgAll(const char* text, ...) +/** + * This function is called once a second from the mainloop. + * It is intended to do background checking on all the users, e.g. do + * ping checks, registration timeouts, etc. + */ +void UserManager::DoBackgroundUserStuff() { - if (!text) - return; + for (LocalList::iterator i = local_users.begin(); i != local_users.end(); ) + { + // It's possible that we quit the user below due to ping timeout etc. and QuitUser() removes it from the list + LocalUser* curr = *i; + ++i; - char textbuffer[MAXBUF]; - char formatbuffer[MAXBUF]; - va_list argsPtr; - va_start (argsPtr, text); - vsnprintf(textbuffer, MAXBUF, text, argsPtr); - va_end(argsPtr); + if (curr->CommandFloodPenalty || curr->eh.getSendQSize()) + { + unsigned int rate = curr->MyClass->GetCommandRate(); + if (curr->CommandFloodPenalty > rate) + curr->CommandFloodPenalty -= rate; + else + curr->CommandFloodPenalty = 0; + curr->eh.OnDataReady(); + } - snprintf(formatbuffer,MAXBUF,"PRIVMSG $%s :%s", ServerInstance->Config->ServerName.c_str(), textbuffer); + switch (curr->registered) + { + case REG_ALL: + CheckPingTimeout(curr); + break; - for (LocalUserList::const_iterator i = local_users.begin(); i != local_users.end(); i++) - { - User* t = *i; - t->WriteServ(std::string(formatbuffer)); + case REG_NICKUSER: + CheckModulesReady(curr); + break; + + default: + CheckRegistrationTimeout(curr); + break; + } } } - -/* return how many users have a given mode e.g. 'a' */ -int UserManager::ModeCount(const char mode) +already_sent_t UserManager::NextAlreadySentId() { - int c = 0; - for(user_hash::iterator i = clientlist->begin(); i != clientlist->end(); ++i) + if (++already_sent_id == 0) { - User* u = i->second; - if (u->modes[mode-65]) - c++; + // Wrapped around, reset the already_sent ids of all users + already_sent_id = 1; + for (LocalList::iterator i = local_users.begin(); i != local_users.end(); ++i) + { + LocalUser* user = *i; + user->already_sent = 0; + } } - return c; + return already_sent_id; }