X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmodules%2Fm_ident.cpp;h=d74873e00770d9aaeb3b8c93552f5a7babff61ff;hb=6d03943426dcce76ba66567a9b18425a5ebb4c0c;hp=3eded4daf59e2eb7a21eb59076d8c6647a05bfb3;hpb=d185decae97752368d5cf62311cbc0d1a52aa22c;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_ident.cpp b/src/modules/m_ident.cpp index 3eded4daf..d74873e00 100644 --- a/src/modules/m_ident.cpp +++ b/src/modules/m_ident.cpp @@ -2,8 +2,8 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2008 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * InspIRCd: (C) 2002-2009 InspIRCd Development Team + * See: http://wiki.inspircd.org/Credits * * This program is free but copyrighted software; see * the file COPYING for details. @@ -12,9 +12,6 @@ */ #include "inspircd.h" -#include "users.h" -#include "channels.h" -#include "modules.h" /* $ModDesc: Provides support for RFC1413 ident lookups */ @@ -77,137 +74,80 @@ 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 */ - + User *user; /* User we are attached to */ + bool done; /* True if lookup is finished */ + std::string result; /* Holds the ident string if done */ public: + time_t age; - IdentRequestSocket(InspIRCd *Server, User* u, const std::string &bindip) : user(u), ServerInstance(Server), result(u->ident) + IdentRequestSocket(User* u) : user(u), result(u->ident) { + age = ServerInstance->Time(); 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)); + + SetFd(socket(user->server_sa.sa.sa_family, SOCK_STREAM, 0)); if (GetFd() == -1) throw ModuleException("Could not create socket"); - /* We allocate two of these because sizeof(sockaddr_in6) > sizeof(sockaddr_in) */ - sockaddr* s = new sockaddr[2]; - sockaddr* addr = new sockaddr[2]; + done = false; + + irc::sockets::sockaddrs bindaddr; + irc::sockets::sockaddrs connaddr; -#ifdef IPV6 - /* Horrid icky nasty ugly berkely socket crap. */ - if (v6) + memcpy(&bindaddr, &user->server_sa, sizeof(bindaddr)); + memcpy(&connaddr, &user->client_sa, sizeof(connaddr)); + + if (connaddr.sa.sa_family == AF_INET6) { - in6_addr addy; - in6_addr n; - if (inet_pton(AF_INET6, user->GetIPString(), &addy) > 0) - { - ((sockaddr_in6*)addr)->sin6_family = AF_INET6; - memcpy(&((sockaddr_in6*)addr)->sin6_addr, &addy, sizeof(addy)); - ((sockaddr_in6*)addr)->sin6_port = htons(113); - size = sizeof(sockaddr_in6); - inet_pton(AF_INET6, bindip.c_str(), &n); - memcpy(&((sockaddr_in6*)s)->sin6_addr, &n, sizeof(sockaddr_in6)); - ((sockaddr_in6*)s)->sin6_port = 0; - ((sockaddr_in6*)s)->sin6_family = AF_INET6; - } + bindaddr.in6.sin6_port = 0; + connaddr.in6.sin6_port = htons(113); } else -#endif { - in_addr addy; - in_addr n; - if (inet_aton(user->GetIPString(), &addy) > 0) - { - ((sockaddr_in*)addr)->sin_family = AF_INET; - ((sockaddr_in*)addr)->sin_addr = addy; - ((sockaddr_in*)addr)->sin_port = htons(113); - size = sizeof(sockaddr_in); - inet_aton(bindip.c_str(), &n); - ((sockaddr_in*)s)->sin_addr = n; - ((sockaddr_in*)s)->sin_port = 0; - ((sockaddr_in*)s)->sin_family = AF_INET; - } + 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, size) < 0) + if (ServerInstance->SE->Bind(GetFd(), &bindaddr.sa, size) < 0) { this->Close(); - delete[] s; - delete[] addr; throw ModuleException("failed to bind()"); } - delete[] s; ServerInstance->SE->NonBlocking(GetFd()); /* Attempt connection (nonblocking) */ - if (ServerInstance->SE->Connect(this, (sockaddr*)addr, size) == -1 && errno != EINPROGRESS) + if (ServerInstance->SE->Connect(this, &connaddr.sa, size) == -1 && errno != EINPROGRESS) { this->Close(); - delete[] addr; throw ModuleException("connect() failed"); } - delete[] addr; - /* 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). */ - #ifndef IPV6 - sockaddr_in laddr, raddr; - #else - sockaddr_in6 laddr, raddr; - #endif - - socklen_t laddrsz = sizeof(laddr); - socklen_t raddrsz = sizeof(raddr); - - if ((getsockname(user->GetFd(), (sockaddr*) &laddr, &laddrsz) != 0) || (getpeername(user->GetFd(), (sockaddr*) &raddr, &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' */ - #ifndef IPV6 - int req_size = snprintf(req, sizeof(req), "%d,%d\r\n", ntohs(raddr.sin_port), ntohs(laddr.sin_port)); - #else - int req_size = snprintf(req, sizeof(req), "%d,%d\r\n", ntohs(raddr.sin6_port), ntohs(laddr.sin6_port)); - #endif + int req_size; + 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 + 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! @@ -335,34 +275,53 @@ 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) { - OnRehash(NULL, ""); + Conf = new ConfigReader; + OnRehash(NULL); Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCheckReady, I_OnCleanup, I_OnUserDisconnect }; ServerInstance->Modules->Attach(eventlist, this, 5); } - virtual Version GetVersion() + ~ModuleIdent() { - return Version(1, 2, 1, 0, VF_VENDOR, API_VERSION); + delete Conf; } + virtual Version GetVersion() + { + return Version("Provides support for RFC1413 ident lookups", VF_VENDOR, API_VERSION); + } - virtual void OnRehash(User *user, const std::string ¶m) + virtual void OnRehash(User *user) { - ConfigReader MyConf(ServerInstance); + delete Conf; + Conf = new ConfigReader; - RequestTimeout = MyConf.ReadInteger("ident", "timeout", 0, true); + RequestTimeout = Conf->ReadInteger("ident", "timeout", 0, true); if (!RequestTimeout) RequestTimeout = 5; } - virtual int OnUserRegister(User *user) + virtual ModResult OnUserRegister(User *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 MOD_RES_PASSTHRU; + } + } + /* 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) @@ -371,54 +330,31 @@ class ModuleIdent : public Module 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 - #ifndef IPV6 - sockaddr_in laddr; - #else - sockaddr_in6 laddr; - #endif - socklen_t laddrsz = sizeof(laddr); - - if (getsockname(user->GetFd(), (sockaddr*) &laddr, &laddrsz) != 0) - { - user->WriteServ("NOTICE Auth :*** Could not find your ident, using %s instead.", user->ident.c_str()); - return 0; - } - - #ifndef IPV6 - const char *ip = inet_ntoa(laddr.sin_addr); - #else - char ip[INET6_ADDRSTRLEN + 1]; - inet_ntop(laddr.sin6_family, &laddr.sin6_addr, ip, INET6_ADDRSTRLEN); - #endif - - IdentRequestSocket *isock = NULL; try { - isock = new IdentRequestSocket(ServerInstance, user, ip); + IdentRequestSocket *isock = new IdentRequestSocket(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; + return MOD_RES_PASSTHRU; } /* 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(User *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"); @@ -436,14 +372,14 @@ class ModuleIdent : public Module * we call this to clean up the user */ OnUserDisconnect(user); - return true; + return MOD_RES_PASSTHRU; } /* Got a result yet? */ if (!isock->HasResult()) { ServerInstance->Logs->Log("m_ident",DEBUG, "No result yet"); - return false; + return MOD_RES_DENY; } ServerInstance->Logs->Log("m_ident",DEBUG, "Yay, result!"); @@ -455,11 +391,11 @@ class ModuleIdent : public Module user->WriteServ("NOTICE Auth :*** Could not find your ident, using %s instead.", isock->GetResult()); /* Copy the ident string to the user */ - user->ident.assign(isock->GetResult(), 0, ServerInstance->Config->Limits.IdentMax + 1); + user->ChangeIdent(isock->GetResult()); /* The user isnt actually disconnecting, we call this to clean up the user */ OnUserDisconnect(user); - return true; + return MOD_RES_PASSTHRU; } virtual void OnCleanup(int target_type, void *item) @@ -472,12 +408,11 @@ class ModuleIdent : public Module virtual void OnUserDisconnect(User *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); } } };