X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_ident.cpp;h=b7c9c1cfdef7ca8c481225093ddc66f9c4a53c5f;hb=9c5629085ae4914f9db514ca6fbd94e8d58c6f31;hp=6db5847537af9b64e6830c54637189b8b799765c;hpb=a03554f504179e5e24de0c33079f3cb109f3d26e;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_ident.cpp b/src/modules/m_ident.cpp index 6db584753..b7c9c1cfd 100644 --- a/src/modules/m_ident.cpp +++ b/src/modules/m_ident.cpp @@ -1,16 +1,27 @@ -/* +------------------------------------+ - * | Inspire Internet Relay Chat Daemon | - * +------------------------------------+ +/* + * InspIRCd -- Internet Relay Chat Daemon * - * InspIRCd: (C) 2002-2009 InspIRCd Development Team - * See: http://wiki.inspircd.org/Credits + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007, 2009 John Brooks + * Copyright (C) 2006-2008 Robin Burchell + * Copyright (C) 2005-2008 Craig Edwards + * Copyright (C) 2008 Thomas Stagner + * Copyright (C) 2007 Dennis Friis * - * 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 . */ + #include "inspircd.h" /* $ModDesc: Provides support for RFC1413 ident lookups */ @@ -73,67 +84,42 @@ class IdentRequestSocket : public EventHandler { - private: - User *user; /* User we are attached to */ - InspIRCd* ServerInstance; /* Server instance */ - bool done; /* True if lookup is finished */ - std::string result; /* Holds the ident string if done */ public: + LocalUser *user; /* User we are attached to */ + std::string result; /* Holds the ident string if done */ + time_t age; + bool done; /* True if lookup is finished */ - IdentRequestSocket(InspIRCd *Server, User* u, const std::string &bindip) : user(u), ServerInstance(Server), result(u->ident) + IdentRequestSocket(LocalUser* u) : user(u) { - socklen_t size = 0; -#ifdef IPV6 - /* Does this look like a v6 ip address? */ - bool v6 = false; - if ((bindip.empty()) || bindip.find(':') != std::string::npos) - v6 = true; - - if (v6) - SetFd(socket(AF_INET6, SOCK_STREAM, 0)); - else -#endif - SetFd(socket(AF_INET, SOCK_STREAM, 0)); + age = ServerInstance->Time(); + + SetFd(socket(user->server_sa.sa.sa_family, SOCK_STREAM, 0)); if (GetFd() == -1) throw ModuleException("Could not create socket"); done = false; - /* We allocate two of these because sizeof(sockaddr_in6) > sizeof(sockaddr_in) */ - irc::sockets::sockaddrs s; - irc::sockets::sockaddrs addr; + irc::sockets::sockaddrs bindaddr; + irc::sockets::sockaddrs connaddr; + + memcpy(&bindaddr, &user->server_sa, sizeof(bindaddr)); + memcpy(&connaddr, &user->client_sa, sizeof(connaddr)); -#ifdef IPV6 - /* Horrid icky nasty ugly berkely socket crap. */ - if (v6) + if (connaddr.sa.sa_family == AF_INET6) { - if (inet_pton(AF_INET6, user->GetIPString(), &addr.in6.sin6_addr) > 0) - { - addr.in6.sin6_family = AF_INET6; - addr.in6.sin6_port = htons(113); - size = sizeof(sockaddr_in6); - inet_pton(AF_INET6, bindip.c_str(), &s.in6.sin6_addr); - s.in6.sin6_family = AF_INET6; - s.in6.sin6_port = 0; - } + bindaddr.in6.sin6_port = 0; + connaddr.in6.sin6_port = htons(113); } else -#endif { - if (inet_aton(user->GetIPString(), &addr.in4.sin_addr) > 0) - { - addr.in4.sin_family = AF_INET; - addr.in4.sin_port = htons(113); - size = sizeof(sockaddr_in); - inet_aton(bindip.c_str(), &s.in4.sin_addr); - s.in4.sin_family = AF_INET; - s.in4.sin_port = 0; - } + bindaddr.in4.sin_port = 0; + connaddr.in4.sin_port = htons(113); } /* Attempt to bind (ident requests must come from the ip the query is referring to */ - if (ServerInstance->SE->Bind(GetFd(), &s.sa, size) < 0) + if (ServerInstance->SE->Bind(GetFd(), bindaddr) < 0) { this->Close(); throw ModuleException("failed to bind()"); @@ -142,53 +128,35 @@ class IdentRequestSocket : public EventHandler ServerInstance->SE->NonBlocking(GetFd()); /* Attempt connection (nonblocking) */ - if (ServerInstance->SE->Connect(this, &addr.sa, size) == -1 && errno != EINPROGRESS) + if (ServerInstance->SE->Connect(this, &connaddr.sa, connaddr.sa_size()) == -1 && errno != EINPROGRESS) { this->Close(); throw ModuleException("connect() failed"); } /* Add fd to socket engine */ - if (!ServerInstance->SE->AddFd(this)) + if (!ServerInstance->SE->AddFd(this, FD_WANT_NO_READ | FD_WANT_POLL_WRITE)) { this->Close(); throw ModuleException("out of fds"); } - - /* Important: We set WantWrite immediately after connect() - * because a successful connection will trigger a writability event - */ - ServerInstance->SE->WantWrite(this); } virtual void OnConnected() { ServerInstance->Logs->Log("m_ident",DEBUG,"OnConnected()"); - - /* Both sockaddr_in and sockaddr_in6 can be safely casted to sockaddr, especially since the - * only members we use are in a part of the struct that should always be identical (at the - * byte level). */ - irc::sockets::sockaddrs laddr, raddr; - - socklen_t laddrsz = sizeof(laddr); - socklen_t raddrsz = sizeof(raddr); - - if ((getsockname(user->GetFd(), &laddr.sa, &laddrsz) != 0) || (getpeername(user->GetFd(), &raddr.sa, &raddrsz) != 0)) - { - done = true; - return; - } + ServerInstance->SE->ChangeEventMask(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE); char req[32]; /* Build request in the form 'localport,remoteport\r\n' */ int req_size; -#ifdef IPV6 - if (raddr.sa.sa_family == AF_INET6) - req_size = snprintf(req, sizeof(req), "%d,%d\r\n", ntohs(raddr.in6.sin6_port), ntohs(laddr.in6.sin6_port)); + if (user->client_sa.sa.sa_family == AF_INET6) + req_size = snprintf(req, sizeof(req), "%d,%d\r\n", + ntohs(user->client_sa.in6.sin6_port), ntohs(user->server_sa.in6.sin6_port)); else -#endif - req_size = snprintf(req, sizeof(req), "%d,%d\r\n", ntohs(raddr.in4.sin_port), ntohs(laddr.in4.sin_port)); + req_size = snprintf(req, sizeof(req), "%d,%d\r\n", + ntohs(user->client_sa.in4.sin_port), ntohs(user->server_sa.in4.sin_port)); /* Send failed if we didnt write the whole ident request -- * might as well give up if this happens! @@ -231,7 +199,6 @@ class IdentRequestSocket : public EventHandler ServerInstance->Logs->Log("m_ident",DEBUG,"Close ident socket %d", GetFd()); ServerInstance->SE->DelFd(this); ServerInstance->SE->Close(GetFd()); - ServerInstance->SE->Shutdown(GetFd(), SHUT_WR); this->SetFd(-1); } } @@ -241,14 +208,6 @@ class IdentRequestSocket : public EventHandler return done; } - /* Note: if the lookup succeeded, will contain 'ident', otherwise - * will contain '~ident'. Use *GetResult() to determine lookup success. - */ - const char* GetResult() - { - return result.c_str(); - } - void ReadResponse() { /* We don't really need to buffer for incomplete replies here, since IDENT replies are @@ -316,106 +275,68 @@ class IdentRequestSocket : public EventHandler class ModuleIdent : public Module { - private: int RequestTimeout; - ConfigReader *Conf; + SimpleExtItem ext; public: - ModuleIdent(InspIRCd *Me) : Module(Me) + ModuleIdent() : ext("ident_socket", this) { - Conf = new ConfigReader(ServerInstance); - OnRehash(NULL, ""); - Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCheckReady, I_OnCleanup, I_OnUserDisconnect }; + OnRehash(NULL); + Implementation eventlist[] = { + I_OnRehash, I_OnUserInit, I_OnCheckReady, + I_OnUserDisconnect, I_OnSetConnectClass + }; ServerInstance->Modules->Attach(eventlist, this, 5); } ~ModuleIdent() { - delete Conf; } virtual Version GetVersion() { - return Version("$Id$", VF_VENDOR, API_VERSION); + return Version("Provides support for RFC1413 ident lookups", VF_VENDOR); } - virtual void OnRehash(User *user, const std::string ¶m) + virtual void OnRehash(User *user) { - delete Conf; - Conf = new ConfigReader(ServerInstance); + ConfigReader Conf; - RequestTimeout = Conf->ReadInteger("ident", "timeout", 0, true); + RequestTimeout = Conf.ReadInteger("ident", "timeout", 0, true); if (!RequestTimeout) RequestTimeout = 5; } - virtual int OnUserRegister(User *user) + void OnUserInit(LocalUser *user) { - for (int j = 0; j < Conf->Enumerate("connect"); j++) - { - std::string hostn = Conf->ReadValue("connect","allow",j); - /* XXX: Fixme: does not respect port, limit, etc */ - if ((InspIRCd::MatchCIDR(user->GetIPString(),hostn, ascii_case_insensitive_map)) || (InspIRCd::Match(user->host,hostn, ascii_case_insensitive_map))) - { - bool useident = Conf->ReadFlag("connect", "useident", "yes", j); - - if (!useident) - return 0; - } - } - - /* User::ident is currently the username field from USER; with m_ident loaded, that - * should be preceded by a ~. The field is actually IdentMax+2 characters wide. */ - if (user->ident.length() > ServerInstance->Config->Limits.IdentMax + 1) - user->ident.assign(user->ident, 0, ServerInstance->Config->Limits.IdentMax); - user->ident.insert(0, "~"); + ConfigTag* tag = user->MyClass->config; + if (!tag->getBool("useident", true)) + return; user->WriteServ("NOTICE Auth :*** Looking up your ident..."); - // Get the IP that the user is connected to, and bind to that for the outgoing connection - irc::sockets::sockaddrs laddr; - socklen_t laddrsz = sizeof(laddr); - - if (getsockname(user->GetFd(), &laddr.sa, &laddrsz) != 0) - { - user->WriteServ("NOTICE Auth :*** Could not find your ident, using %s instead.", user->ident.c_str()); - return 0; - } - - char ip[INET6_ADDRSTRLEN + 1]; -#ifdef IPV6 - if (laddr.sa.sa_family == AF_INET6) - inet_ntop(laddr.in6.sin6_family, &laddr.in6.sin6_addr, ip, INET6_ADDRSTRLEN); - else -#endif - inet_ntop(laddr.in4.sin_family, &laddr.in4.sin_addr, ip, INET6_ADDRSTRLEN); - - IdentRequestSocket *isock = NULL; try { - isock = new IdentRequestSocket(ServerInstance, user, ip); + IdentRequestSocket *isock = new IdentRequestSocket(IS_LOCAL(user)); + ext.set(user, isock); } catch (ModuleException &e) { ServerInstance->Logs->Log("m_ident",DEBUG,"Ident exception: %s", e.GetReason()); - return 0; } - - user->Extend("ident_socket", isock); - return 0; } /* This triggers pretty regularly, we can use it in preference to * creating a Timer object and especially better than creating a * Timer per ident lookup! */ - virtual bool OnCheckReady(User *user) + virtual ModResult OnCheckReady(LocalUser *user) { /* Does user have an ident socket attached at all? */ - IdentRequestSocket *isock = NULL; - if (!user->GetExt("ident_socket", isock)) + IdentRequestSocket *isock = ext.get(user); + if (!isock) { ServerInstance->Logs->Log("m_ident",DEBUG, "No ident socket :("); - return true; + return MOD_RES_PASSTHRU; } ServerInstance->Logs->Log("m_ident",DEBUG, "Has ident_socket"); @@ -429,52 +350,55 @@ class ModuleIdent : public Module /* Ident timeout */ user->WriteServ("NOTICE Auth :*** Ident request timed out."); ServerInstance->Logs->Log("m_ident",DEBUG, "Timeout"); - /* The user isnt actually disconnecting, - * we call this to clean up the user - */ - OnUserDisconnect(user); - return true; } - - /* Got a result yet? */ - if (!isock->HasResult()) + else if (!isock->HasResult()) { + // time still good, no result yet... hold the registration ServerInstance->Logs->Log("m_ident",DEBUG, "No result yet"); - return false; + return MOD_RES_DENY; } ServerInstance->Logs->Log("m_ident",DEBUG, "Yay, result!"); /* wooo, got a result (it will be good, or bad) */ - if (*(isock->GetResult()) != '~') - user->WriteServ("NOTICE Auth :*** Found your ident, '%s'", isock->GetResult()); + if (isock->result.empty()) + { + user->ident.insert(0, 1, '~'); + user->WriteServ("NOTICE Auth :*** Could not find your ident, using %s instead.", user->ident.c_str()); + } else - user->WriteServ("NOTICE Auth :*** Could not find your ident, using %s instead.", isock->GetResult()); + { + user->ident = isock->result; + user->WriteServ("NOTICE Auth :*** Found your ident, '%s'", user->ident.c_str()); + } - /* Copy the ident string to the user */ - user->ident.assign(isock->GetResult(), 0, ServerInstance->Config->Limits.IdentMax + 1); + isock->Close(); + ext.unset(user); + return MOD_RES_PASSTHRU; + } - /* The user isnt actually disconnecting, we call this to clean up the user */ - OnUserDisconnect(user); - return true; + ModResult OnSetConnectClass(LocalUser* user, ConnectClass* myclass) + { + if (myclass->config->getBool("requireident") && user->ident[0] == '~') + return MOD_RES_DENY; + return MOD_RES_PASSTHRU; } virtual void OnCleanup(int target_type, void *item) { /* Module unloading, tidy up users */ if (target_type == TYPE_USER) - OnUserDisconnect((User*)item); + OnUserDisconnect((LocalUser*)item); } - virtual void OnUserDisconnect(User *user) + virtual void OnUserDisconnect(LocalUser *user) { /* User disconnect (generic socket detatch event) */ - IdentRequestSocket *isock = NULL; - if (user->GetExt("ident_socket", isock)) + IdentRequestSocket *isock = ext.get(user); + if (isock) { isock->Close(); - delete isock; - user->Shrink("ident_socket"); + ext.unset(user); } } };