-/* +------------------------------------+
- * | 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 <danieldg@inspircd.org>
+ * Copyright (C) 2007, 2009 John Brooks <john.brooks@dereferenced.net>
+ * Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2005-2008 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
*
- * 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 <http://www.gnu.org/licenses/>.
*/
-#include "inspircd.h"
-/* $ModDesc: Provides support for RFC1413 ident lookups */
+#include "inspircd.h"
/* --------------------------------------------------------------
* Note that this is the third incarnation of m_ident. The first
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;
-#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)
{
- 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 (SocketEngine::Bind(GetFd(), bindaddr) < 0)
{
this->Close();
throw ModuleException("failed to bind()");
}
- ServerInstance->SE->NonBlocking(GetFd());
+ SocketEngine::NonBlocking(GetFd());
/* Attempt connection (nonblocking) */
- if (ServerInstance->SE->Connect(this, &addr.sa, size) == -1 && errno != EINPROGRESS)
+ if (SocketEngine::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 (!SocketEngine::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()
+ 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->Logs->Log(MODNAME, LOG_DEBUG, "OnConnected()");
+ SocketEngine::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!
*/
- if (ServerInstance->SE->Send(this, req, req_size, 0) < req_size)
+ if (SocketEngine::Send(this, req, req_size, 0) < req_size)
done = true;
}
- virtual void HandleEvent(EventType et, int errornum = 0)
+ void HandleEvent(EventType et, int errornum = 0)
{
switch (et)
{
break;
case EVENT_ERROR:
/* fd error event, ohshi- */
- ServerInstance->Logs->Log("m_ident",DEBUG,"EVENT_ERROR");
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "EVENT_ERROR");
/* We *must* Close() here immediately or we get a
* huge storm of EVENT_ERROR events!
*/
*/
if (GetFd() > -1)
{
- 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);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Close ident socket %d", GetFd());
+ SocketEngine::DelFd(this);
+ SocketEngine::Close(GetFd());
this->SetFd(-1);
}
}
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
* extremely short - there is *no* sane reason it'd be in more than one packet
*/
- char ibuf[MAXBUF];
- int recvresult = ServerInstance->SE->Recv(this, ibuf, MAXBUF-1, 0);
+ char ibuf[256];
+ int recvresult = SocketEngine::Recv(this, ibuf, sizeof(ibuf)-1, 0);
+
+ /* Close (but don't delete from memory) our socket
+ * and flag as done since the ident lookup has finished
+ */
+ Close();
+ done = true;
/* Cant possibly be a valid response shorter than 3 chars,
* because the shortest possible response would look like: '1,1'
*/
if (recvresult < 3)
- {
- Close();
- done = true;
return;
- }
- ServerInstance->Logs->Log("m_ident",DEBUG,"ReadResponse()");
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "ReadResponse()");
- irc::sepstream sep(ibuf, ':');
- std::string token;
- for (int i = 0; sep.GetToken(token); i++)
- {
- /* We only really care about the 4th portion */
- if (i < 3)
- continue;
-
- std::string ident;
+ /* Truncate at the first null character, but first make sure
+ * there is at least one null char (at the end of the buffer).
+ */
+ ibuf[recvresult] = '\0';
+ std::string buf(ibuf);
- /* Truncate the ident at any characters we don't like, skip leading spaces */
- size_t k = 0;
- for (const char *j = token.c_str(); *j && (k < ServerInstance->Config->Limits.IdentMax + 1); j++)
- {
- if (*j == ' ')
- continue;
+ /* <2 colons: invalid
+ * 2 colons: reply is an error
+ * >3 colons: there is a colon in the ident
+ */
+ if (std::count(buf.begin(), buf.end(), ':') != 3)
+ return;
- /* Rules taken from InspIRCd::IsIdent */
- if (((*j >= 'A') && (*j <= '}')) || ((*j >= '0') && (*j <= '9')) || (*j == '-') || (*j == '.'))
- {
- ident += *j;
- continue;
- }
+ std::string::size_type lastcolon = buf.rfind(':');
+ /* Truncate the ident at any characters we don't like, skip leading spaces */
+ for (std::string::const_iterator i = buf.begin()+lastcolon+1; i != buf.end(); ++i)
+ {
+ if (result.size() == ServerInstance->Config->Limits.IdentMax)
+ /* Ident is getting too long */
break;
- }
- /* Re-check with IsIdent, in case that changes and this doesn't (paranoia!) */
- if (!ident.empty() && ServerInstance->IsIdent(ident.c_str()))
+ if (*i == ' ')
+ continue;
+
+ /* Add the next char to the result and see if it's still a valid ident,
+ * according to IsIdent(). If it isn't, then erase what we just added and
+ * we're done.
+ */
+ result += *i;
+ if (!ServerInstance->IsIdent(result))
{
- result = ident;
+ result.erase(result.end()-1);
+ break;
}
-
- break;
}
-
- /* Close (but dont delete from memory) our socket
- * and flag as done
- */
- Close();
- done = true;
- return;
}
};
class ModuleIdent : public Module
{
- private:
int RequestTimeout;
- ConfigReader *Conf;
+ SimpleExtItem<IdentRequestSocket> ext;
public:
- ModuleIdent(InspIRCd *Me) : Module(Me)
- {
- Conf = new ConfigReader(ServerInstance);
- OnRehash(NULL, "");
- Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCheckReady, I_OnCleanup, I_OnUserDisconnect };
- ServerInstance->Modules->Attach(eventlist, this, 5);
- }
-
- ~ModuleIdent()
+ ModuleIdent() : ext("ident_socket", this)
{
- delete Conf;
}
- virtual Version GetVersion()
+ Version GetVersion() CXX11_OVERRIDE
{
- 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)
+ void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
- delete Conf;
- Conf = new ConfigReader(ServerInstance);
-
- RequestTimeout = Conf->ReadInteger("ident", "timeout", 0, true);
+ RequestTimeout = ServerInstance->Config->ConfValue("ident")->getInt("timeout", 5);
if (!RequestTimeout)
RequestTimeout = 5;
}
- virtual int OnUserRegister(User *user)
+ void OnUserInit(LocalUser *user) CXX11_OVERRIDE
{
- 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, "~");
-
- 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;
- }
+ ConfigTag* tag = user->MyClass->config;
+ if (!tag->getBool("useident", true))
+ return;
- 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);
+ user->WriteNotice("*** Looking up your ident...");
- 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;
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Ident exception: " + e.GetReason());
}
-
- 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)
+ ModResult OnCheckReady(LocalUser *user) CXX11_OVERRIDE
{
/* Does user have an ident socket attached at all? */
- IdentRequestSocket *isock = NULL;
- if (!user->GetExt("ident_socket", isock))
- {
- ServerInstance->Logs->Log("m_ident",DEBUG, "No ident socket :(");
- return true;
- }
-
- ServerInstance->Logs->Log("m_ident",DEBUG, "Has ident_socket");
+ IdentRequestSocket *isock = ext.get(user);
+ if (!isock)
+ return MOD_RES_PASSTHRU;
time_t compare = isock->age;
compare += RequestTimeout;
if (ServerInstance->Time() >= compare)
{
/* 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;
+ user->WriteNotice("*** Ident request timed out.");
}
-
- /* Got a result yet? */
- if (!isock->HasResult())
+ else if (!isock->HasResult())
{
- ServerInstance->Logs->Log("m_ident",DEBUG, "No result yet");
- return false;
+ // time still good, no result yet... hold the registration
+ 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(user->ident.begin(), 1, '~');
+ user->WriteNotice("*** Could not find your ident, using " + user->ident + " instead.");
+ }
else
- user->WriteServ("NOTICE Auth :*** Could not find your ident, using %s instead.", isock->GetResult());
+ {
+ user->ident = isock->result;
+ user->WriteNotice("*** Found your ident, '" + user->ident + "'");
+ }
- /* Copy the ident string to the user */
- user->ident.assign(isock->GetResult(), 0, ServerInstance->Config->Limits.IdentMax + 1);
+ user->InvalidateCache();
+ 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) CXX11_OVERRIDE
+ {
+ if (myclass->config->getBool("requireident") && user->ident[0] == '~')
+ return MOD_RES_DENY;
+ return MOD_RES_PASSTHRU;
}
- virtual void OnCleanup(int target_type, void *item)
+ void OnCleanup(int target_type, void *item) CXX11_OVERRIDE
{
/* Module unloading, tidy up users */
if (target_type == TYPE_USER)
- OnUserDisconnect((User*)item);
+ {
+ LocalUser* user = IS_LOCAL((User*) item);
+ if (user)
+ OnUserDisconnect(user);
+ }
}
- virtual void OnUserDisconnect(User *user)
+ void OnUserDisconnect(LocalUser *user) CXX11_OVERRIDE
{
/* 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);
}
}
};
MODULE_INIT(ModuleIdent)
-
projects / user / henk / code / inspircd.git / blobdiff