-/* +------------------------------------+
- * | 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) : user(u), ServerInstance(Server), result(u->ident)
+ IdentRequestSocket(LocalUser* u) : user(u)
{
age = ServerInstance->Time();
- socklen_t size = 0;
SetFd(socket(user->server_sa.sa.sa_family, SOCK_STREAM, 0));
}
/* Attempt to bind (ident requests must come from the ip the query is referring to */
- if (ServerInstance->SE->Bind(GetFd(), &bindaddr.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, &connaddr.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 OnEventHandlerWrite() CXX11_OVERRIDE
{
- ServerInstance->Logs->Log("m_ident",DEBUG,"OnConnected()");
+ SocketEngine::ChangeEventMask(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
char req[32];
/* 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)
- {
- switch (et)
- {
- case EVENT_READ:
- /* fd readable event, received ident response */
- ReadResponse();
- break;
- case EVENT_WRITE:
- /* fd writeable event, successfully connected! */
- OnConnected();
- break;
- case EVENT_ERROR:
- /* fd error event, ohshi- */
- ServerInstance->Logs->Log("m_ident",DEBUG,"EVENT_ERROR");
- /* We *must* Close() here immediately or we get a
- * huge storm of EVENT_ERROR events!
- */
- Close();
- done = true;
- break;
- }
- }
-
void Close()
{
/* Remove ident socket from engine, and close it, but dont detatch it
*/
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);
- this->SetFd(-1);
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Close ident socket %d", GetFd());
+ SocketEngine::Close(this);
}
}
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()
+ void OnEventHandlerRead() CXX11_OVERRIDE
{
/* 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
- */
+ void OnEventHandlerError(int errornum) CXX11_OVERRIDE
+ {
Close();
done = true;
- return;
+ }
+
+ CullResult cull() CXX11_OVERRIDE
+ {
+ Close();
+ return EventHandler::cull();
}
};
class ModuleIdent : public Module
{
int RequestTimeout;
- ConfigReader *Conf;
- SimpleExtItem<IdentRequestSocket> ext;
+ bool NoLookupPrefix;
+ SimpleExtItem<IdentRequestSocket, stdalgo::culldeleter> ext;
public:
- ModuleIdent(InspIRCd *Me) : Module(Me), ext("ident_socket", this)
- {
- 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", ExtensionItem::EXT_USER, 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)
+ void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
- delete Conf;
- Conf = new ConfigReader(ServerInstance);
-
- RequestTimeout = Conf->ReadInteger("ident", "timeout", 0, true);
- if (!RequestTimeout)
- RequestTimeout = 5;
+ ConfigTag* tag = ServerInstance->Config->ConfValue("ident");
+ RequestTimeout = tag->getDuration("timeout", 5, 1);
+ NoLookupPrefix = tag->getBool("nolookupprefix", false);
}
- virtual ModResult 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 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)
- 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...");
+ user->WriteNotice("*** Looking up your ident...");
try
{
- IdentRequestSocket *isock = new IdentRequestSocket(ServerInstance, user);
+ IdentRequestSocket *isock = new IdentRequestSocket(user);
ext.set(user, isock);
}
catch (ModuleException &e)
{
- ServerInstance->Logs->Log("m_ident",DEBUG,"Ident exception: %s", e.GetReason());
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Ident exception: " + e.GetReason());
}
-
- 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 ModResult OnCheckReady(User *user)
+ ModResult OnCheckReady(LocalUser *user) CXX11_OVERRIDE
{
/* Does user have an ident socket attached at all? */
IdentRequestSocket *isock = ext.get(user);
if (!isock)
{
- ServerInstance->Logs->Log("m_ident",DEBUG, "No ident socket :(");
+ if ((NoLookupPrefix) && (user->ident[0] != '~'))
+ user->ident.insert(user->ident.begin(), 1, '~');
return MOD_RES_PASSTHRU;
}
- ServerInstance->Logs->Log("m_ident",DEBUG, "Has ident_socket");
-
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 MOD_RES_PASSTHRU;
+ 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");
+ // 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());
-
- /* Copy the ident string to the user */
- user->ChangeIdent(isock->GetResult());
+ {
+ user->ident = isock->result;
+ user->WriteNotice("*** Found your ident, '" + user->ident + "'");
+ }
- /* The user isnt actually disconnecting, we call this to clean up the user */
- OnUserDisconnect(user);
+ user->InvalidateCache();
+ isock->Close();
+ ext.unset(user);
return MOD_RES_PASSTHRU;
}
- virtual void OnCleanup(int target_type, void *item)
+ ModResult OnSetConnectClass(LocalUser* user, ConnectClass* myclass) CXX11_OVERRIDE
{
- /* Module unloading, tidy up users */
- if (target_type == TYPE_USER)
- OnUserDisconnect((User*)item);
- }
-
- virtual void OnUserDisconnect(User *user)
- {
- /* User disconnect (generic socket detatch event) */
- IdentRequestSocket *isock = ext.get(user);
- if (isock)
- {
- isock->Close();
- ext.unset(user);
- }
+ if (myclass->config->getBool("requireident") && user->ident[0] == '~')
+ return MOD_RES_DENY;
+ return MOD_RES_PASSTHRU;
}
};
MODULE_INIT(ModuleIdent)
-
projects / user / henk / code / inspircd.git / blobdiff