Remove m_proxyscan; not functional and not targetted at 1.2 release anyway

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@10237 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 0 insertions, 393 deletions

diff --git a/src/modules/m_proxyscan.cpp b/src/modules/m_proxyscan.cpp
deleted file mode 100644
index 5e302ea80..000000000
--- a/src/modules/m_proxyscan.cpp
+++ /dev/null
@@ -1,393 +0,0 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
- *
- *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
- *
- * This program is free but copyrighted software; see
- *	    the file COPYING for details.
- *
- * ---------------------------------------------------
- */
-
-#include "inspircd.h"
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-
-/* $ModDesc: Scans locally connecting clients for proxies. */
-
-/*
- * How this works: basic overview.
- *  We create a socket type (derived from EventHandler -- don't feel like
- *  belting my head against the wall ala ident). For each test in the
- *  configuration file for each locally connecting client, we create a ProxySocket
- *  and run the associated test.
- *
- * The user is allowed to connect (delaying the connect might take ages..), and they
- * will be destroyed *if* a bad response comes back to a test.
- */
-
-/*
- * A few things to note:
- *
- *   O  The only place that may *delete* an active or inactive
- *      ident socket is OnUserDisconnect in the module class.
- *      Because this is out of scope of the socket class there is
- *      no possibility that the socket may ever try to delete
- *      itself.
- *
- *   O  Closure of the ident socket with the Close() method will
- *      not cause removal of the socket from memory or detatchment
- *      from its 'parent' User class. It will only flag it as an
- *      inactive socket in the socket engine.
- *
- *   O  Timeouts are handled in OnCheckReaady at the same time as
- *      checking if the ident socket has a result. This is done
- *      by checking if the age the of the class (its instantiation
- *      time) plus the timeout value is greater than the current time.
- *
- *  O   The ident socket is able to but should not modify its
- *      'parent' user directly. Instead the ident socket class sets
- *      a completion flag and during the next call to OnCheckReady,
- *      the completion flag will be checked and any result copied to
- *      that user's class. This again ensures a single point of socket
- *      deletion for safer, neater code.
- *
- *  O   The code in the constructor of the ident socket is taken from
- *      BufferedSocket but majorly thinned down. It works for both
- *      IPv4 and IPv6.
- *
- *  O   In the event that the ident socket throws a ModuleException,
- *      nothing is done. This is counted as total and complete
- *      failure to create a connection.
- * --------------------------------------------------------------
- */
-
-class ProxySocket : public EventHandler
-{
- private:
-	User *user;			/* User we are attached to */
-	InspIRCd *ServerInstance;	/* Server instance */
-	char challenge[10];		/* what is sent on connect, as bytes */
-	int clen;
-	char response[20];		/* what we kill for on recieve, as bytes */
-	int rlen;
-	bool done;
- public:
-	ProxySocket(InspIRCd *Server, User* u, const std::string &bindip, int port, const char *cstr, int mclen, const char *rstr, int mrlen)
-	{
-		user = u;
-		ServerInstance = Server;
-		this->clen = mclen;
-		this->rlen = mrlen;
-
-		int i;
-
-		/* byte for byte copies of challenge and response. */
-		for (i = 0; i != clen; i++)
-		{
-			this->challenge[i] = cstr[i];
-		}
-
-		for (i = 0; i != rlen; i++)
-		{
-			this->response[i] = rstr[i];
-		}
-
-		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));
-
-		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];
-
-#ifdef IPV6
-		/* Horrid icky nasty ugly berkely socket crap. */
-		if (v6)
-		{
-			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(port);
-				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;
-			}
-		}
-		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(port);
-				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;
-			}
-		}
-
-		/* Attempt to bind (ident requests must come from the ip the query is referring to */
-		if (ServerInstance->SE->Bind(GetFd(), s, 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)
-		{
-			this->Close();
-			delete[] addr;
-			throw ModuleException("connect() failed");
-		}
-
-		delete[] addr;
-
-		/* Add fd to socket engine */
-		if (!ServerInstance->SE->AddFd(this))
-		{
-			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_proxyscan",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;
-		}
-
-		/* Send failed if we didnt write the whole ident request --
-		 * might as well give up if this happens!
-		 */
-		ServerInstance->Logs->Log("m_proxyscan",DEBUG, "Sending");
-		if (ServerInstance->SE->Send(this, this->challenge, this->clen, 0) < this->clen)
-		{
-			ServerInstance->Logs->Log("m_proxyscan",DEBUG, "Send incomplete");
-			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_proxyscan",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
-		 * from its parent user class, or attempt to delete its memory.
-		 */
-		if (GetFd() > -1)
-		{
-			ServerInstance->Logs->Log("m_proxyscan",DEBUG,"Close ident socket %d", GetFd());
-			ServerInstance->SE->DelFd(this);
-			ServerInstance->SE->Close(GetFd());
-			ServerInstance->SE->Shutdown(GetFd(), SHUT_WR);
-			this->SetFd(-1);
-		}
-	}
-
-	bool HasResult()
-	{
-		return done;
-	}
-
-	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);
-
-		ServerInstance->Logs->Log("m_proxyscan",DEBUG,"ReadResponse(): %s -- %d", ibuf, recvresult);
-
-		bool match = true;
-		int i;
-
-		for (i = 0; i != this->rlen && i != recvresult; i++)
-		{
-			if (this->response[i] != ibuf[i])
-			{
-				ServerInstance->Logs->Log("m_proxyscan",DEBUG, "No match at pos %d: %c ne %c", i, this->response[i], ibuf[i]);
-				/* no match */
-				match = false;
-			}
-		}
-
-		if (match == true)
-		{
-			ServerInstance->Users->QuitUser(this->user, "Open proxy detected.");
-		}
-
-		/* Close (but dont delete from memory) our socket
-		 * and flag as done
-		 */
-		Close();
-		done = true;
-		return;
-	}
-};
-
-class ModuleProxy : public Module
-{
- private:
-	int RequestTimeout;
- public:
-	ModuleProxy(InspIRCd *Me)
-		: Module(Me)
-	{
-		OnRehash(NULL, "");
-		Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCleanup, I_OnUserDisconnect };
-		ServerInstance->Modules->Attach(eventlist, this, 4);
-	}
-
-	virtual Version GetVersion()
-	{
-		return Version(1, 2, 1, 0, VF_VENDOR, API_VERSION);
-	}
-
-
-	virtual void OnRehash(User *user, const std::string &param)
-	{
-		ConfigReader MyConf(ServerInstance);
-
-		RequestTimeout = MyConf.ReadInteger("ident", "timeout", 0, true);
-		if (!RequestTimeout)
-			RequestTimeout = 5;
-	}
-
-	virtual int OnUserRegister(User *user)
-	{
-		user->WriteServ("NOTICE Auth :*** Checking you for proxies...");
-
-		// 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)
-		{
-			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
-
-		ProxySocket *p = NULL;
-		try
-		{
-			p = new ProxySocket(ServerInstance, user, ip, 80, "GET /\n", 7, "Nothing here.", 12);
-		}
-		catch (ModuleException &e)
-		{
-			ServerInstance->Logs->Log("m_proxyscan",DEBUG,"Proxy exception: %s", e.GetReason());
-			return 0;
-		}
-
-		user->Extend("proxy_socket", p);
-		return 0;
-	}
-
-	virtual void OnCleanup(int target_type, void *item)
-	{
-		/* Module unloading, tidy up users */
-		if (target_type == TYPE_USER)
-			OnUserDisconnect((User*)item);
-	}
-
-	virtual void OnUserDisconnect(User *user)
-	{
-		/* User disconnect (generic socket detatch event) */
-		ProxySocket *p = NULL;
-		if (user->GetExt("proxy_socket", p))
-		{
-			p->Close();
-			delete p;
-			user->Shrink("proxy_socket");
-			ServerInstance->Logs->Log("m_proxyscan",DEBUG, "Removed proxy socket from %s", user->nick.c_str());
-		}
-	}
-};
-
-MODULE_INIT(ModuleProxy)
-