X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fusermanager.cpp;h=e74f7dadcd5ecd162677ea62ce9e6e4a95931930;hb=761e6d75ba37b984998952940ed681e79e456142;hp=3bf17cda273941a8d03398eb36a63a02033cfedc;hpb=f96eeeddab6b799efcebec80fdf64a58cab122f5;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/usermanager.cpp b/src/usermanager.cpp index 3bf17cda2..fe052fcfc 100644 --- a/src/usermanager.cpp +++ b/src/usermanager.cpp @@ -1,17 +1,378 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2008 Dennis Friis + * Copyright (C) 2008 Robin Burchell + * Copyright (C) 2008 Craig Edwards * - * This program is free but copyrighted software; see - * the file COPYING for details. + * 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 + * License as published by the Free Software Foundation, version 2. * - * --------------------------------------------------- + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ -/* $Core: libIRCDusermanager */ #include "inspircd.h" +#include "xline.h" +#include "iohook.h" + +namespace +{ + class WriteCommonQuit : public User::ForEachNeighborHandler + { + std::string line; + std::string operline; + + void Execute(LocalUser* user) CXX11_OVERRIDE + { + user->Write(user->IsOper() ? operline : line); + } + + public: + WriteCommonQuit(User* user, const std::string& msg, const std::string& opermsg) + : line(":" + user->GetFullHost() + " QUIT :") + , operline(line) + { + line += msg; + operline += opermsg; + user->ForEachNeighbor(*this, false); + } + }; +} + +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; + } +} + +/* add a client connection to the sockets list */ +void UserManager::AddUser(int socket, ListenSocket* via, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server) +{ + /* NOTE: Calling this one parameter constructor for User automatically + * allocates a new UUID and places it in the hash_map. + */ + LocalUser* const New = new LocalUser(socket, client, server); + UserIOHandler* eh = &New->eh; + + // If this listener has an IO hook provider set then tell it about the connection + if (via->iohookprov) + via->iohookprov->OnAccept(eh, client, server); + + ServerInstance->Logs->Log("USERS", LOG_DEBUG, "New user fd: %d", socket); + + this->unregistered_count++; + + /* The users default nick is their UUID */ + New->nick = New->uuid; + this->clientlist[New->nick] = New; + + New->registered = REG_NONE; + New->signon = ServerInstance->Time(); + New->lastping = 1; + + this->AddClone(New); + + this->local_users.push_front(New); + + 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 + */ + New->SetClass(); + + /* + * Check connect class settings and initialise settings into User. + * This will be done again after DNS resolution. -- w00t + */ + New->CheckClass(ServerInstance->Config->CCOnConnect); + if (New->quitting) + return; + + /* + * even with bancache, we still have to keep User::exempt current. + * besides that, if we get a positive bancache hit, we still won't fuck + * them over if they are exempt. -- w00t + */ + New->exempt = (ServerInstance->XLines->MatchesLine("E",New) != NULL); + + BanCacheHit* const b = ServerInstance->BanCache.GetHit(New->GetIPString()); + if (b) + { + if (!b->Type.empty() && !New->exempt) + { + /* user banned */ + ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Positive hit for " + New->GetIPString()); + if (!ServerInstance->Config->XLineMessage.empty()) + New->WriteNumeric(ERR_YOUREBANNEDCREEP, ServerInstance->Config->XLineMessage); + this->QuitUser(New, b->Reason); + return; + } + else + { + ServerInstance->Logs->Log("BANCACHE", LOG_DEBUG, "BanCache: Negative hit for " + New->GetIPString()); + } + } + else + { + if (!New->exempt) + { + XLine* r = ServerInstance->XLines->MatchesLine("Z",New); + + if (r) + { + r->Apply(New); + return; + } + } + } + + 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"); + } + + if (ServerInstance->Config->RawLog) + New->WriteNotice("*** Raw I/O logging is enabled on this server. All messages, passwords, and commands are being recorded."); + + FOREACH_MOD(OnSetUserIP, (New)); + if (New->quitting) + return; + + FOREACH_MOD(OnUserInit, (New)); +} + +void UserManager::QuitUser(User* user, const std::string& quitreason, const std::string* operreason) +{ + if (user->quitting) + { + ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Tried to quit quitting user: " + user->nick); + return; + } + + if (IS_SERVER(user)) + { + ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Tried to quit server user: " + user->nick); + return; + } + + user->quitting = true; + + ServerInstance->Logs->Log("USERS", LOG_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->c_str() : quitreason.c_str()); + + std::string reason; + reason.assign(quitreason, 0, ServerInstance->Config->Limits.MaxQuit); + if (!operreason) + operreason = &reason; + + ServerInstance->GlobalCulls.AddItem(user); + + if (user->registered == REG_ALL) + { + FOREACH_MOD(OnUserQuit, (user, reason, *operreason)); + WriteCommonQuit(user, reason, *operreason); + } + else + unregistered_count--; + + if (IS_LOCAL(user)) + { + LocalUser* lu = IS_LOCAL(user); + FOREACH_MOD(OnUserDisconnect, (lu)); + lu->eh.Close(); + + if (lu->registered == REG_ALL) + ServerInstance->SNO->WriteToSnoMask('q',"Client exiting: %s (%s) [%s]", user->GetFullRealHost().c_str(), user->GetIPString().c_str(), operreason->c_str()); + local_users.erase(lu); + } + + if (!clientlist.erase(user->nick)) + ServerInstance->Logs->Log("USERS", LOG_DEFAULT, "ERROR: Nick not found in clientlist, cannot remove: " + user->nick); + + uuidlist.erase(user->uuid); + user->PurgeEmptyChannels(); +} + +void UserManager::AddClone(User* user) +{ + CloneCounts& counts = clonemap[user->GetCIDRMask()]; + counts.global++; + if (IS_LOCAL(user)) + counts.local++; +} + +void UserManager::RemoveCloneCounts(User *user) +{ + CloneMap::iterator it = clonemap.find(user->GetCIDRMask()); + if (it != clonemap.end()) + { + CloneCounts& counts = it->second; + counts.global--; + if (counts.global == 0) + { + // No more users from this IP, remove entry from the map + clonemap.erase(it); + return; + } + + if (IS_LOCAL(user)) + counts.local--; + } +} + +void UserManager::RehashCloneCounts() +{ + clonemap.clear(); + + 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); + } +} + +const UserManager::CloneCounts& UserManager::GetCloneCounts(User* user) const +{ + CloneMap::const_iterator it = clonemap.find(user->GetCIDRMask()); + if (it != clonemap.end()) + return it->second; + else + return zeroclonecounts; +} + +void UserManager::ServerNoticeAll(const char* text, ...) +{ + std::string message; + VAFORMAT(message, text, text); + message = "NOTICE $" + ServerInstance->Config->ServerName + " :" + message; + + for (LocalList::const_iterator i = local_users.begin(); i != local_users.end(); ++i) + { + User* t = *i; + t->WriteServ(message); + } +} + +/* this returns true when all modules are satisfied that the user should be allowed onto the irc server + * (until this returns true, a user will block in the waiting state, waiting to connect up to the + * registration timeout maximum seconds) + */ +bool UserManager::AllModulesReportReady(LocalUser* user) +{ + ModResult res; + FIRST_MOD_RESULT(OnCheckReady, res, (user)); + return (res == MOD_RES_PASSTHRU); +} + +/** + * This function is called once a second from the mainloop. + * It is intended to do background checking on all the user structs, e.g. + * stuff like ping checks, registration timeouts, etc. + */ +void UserManager::DoBackgroundUserStuff() +{ + /* + * loop over all local users.. + */ + 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; + + 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(); + } + + switch (curr->registered) + { + case REG_ALL: + if (ServerInstance->Time() >= curr->nping) + { + // This user didn't answer the last ping, remove them + if (!curr->lastping) + { + time_t time = ServerInstance->Time() - (curr->nping - curr->MyClass->GetPingTime()); + const std::string message = "Ping timeout: " + ConvToStr(time) + (time != 1 ? " seconds" : " second"); + this->QuitUser(curr, message); + continue; + } + + curr->Write("PING :" + ServerInstance->Config->ServerName); + curr->lastping = 0; + curr->nping = ServerInstance->Time() + curr->MyClass->GetPingTime(); + } + break; + case REG_NICKUSER: + if (AllModulesReportReady(curr)) + { + /* User has sent NICK/USER, modules are okay, DNS finished. */ + curr->FullConnect(); + continue; + } + + // If the user has been quit in OnCheckReady then we shouldn't + // quit them again for having a registration timeout. + if (curr->quitting) + continue; + break; + } + + if (curr->registered != REG_ALL && curr->MyClass && (ServerInstance->Time() > (curr->signon + curr->MyClass->GetRegTimeout()))) + { + /* + * registration timeout -- didnt send USER/NICK/HOST + * in the time specified in their connection class. + */ + this->QuitUser(curr, "Registration timeout"); + continue; + } + } +} +already_sent_t UserManager::NextAlreadySentId() +{ + if (++already_sent_id == 0) + { + // 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 already_sent_id; +}