CSmtpProxyMT 1.0

#include <winsock2.h>
#include <process.h>

#define OK_SUCCESS 0
#define ERR_RUNNING 1
#define ERR_WSAFAIL 2
#define ERR_INVALIDSOCKET 3
#define ERR_BIND 4
#define ERR_LISTEN 5
#define ERR_HOST 6
#define ERR_CONNECT 7
#define ERR_STOPPED 8


class CSmtpProxyMT  
{
private:
	struct SSmtp
	{
		char SmtpServer[250];
		char ClientIP[20];
		int SmtpPort;
		int LocalPort;
		SOCKET LocalSocket;
		CSmtpProxyMT* pCSmtpProxyMT;
	public:
		void CopyStruct(SSmtp *pSSmtp);
	};
	struct socket_pair
	{
		SOCKET src;
		SOCKET dest;
		BOOL IsClient;
		CSmtpProxyMT* pCSmtpProxyMT;
	};

protected:
	BOOL AcceptFlag;
	SSmtp m_SSmtp;
	SOCKET SmtpServerSocket;	
	char ProxySignature[2048];	

public:
	int StopProxy();
	int StartProxy(char *server, int port, int localport);		
	CSmtpProxyMT();
	virtual ~CSmtpProxyMT();
	BOOL SetSignature(char *sig);
	
private:	
	static void AddToEnd(char* buff, char* b, char* sig);
	static int InsertTextSignature(char*,char*);
	static BOOL FoundBoundary(char *boundary, char *buff);
	static BOOL IsEndOfData(char*);
	static char * MakeUpper(char * );
	static BOOL IsDataCommand(char *);
	DWORD SmtpProxyThreadMain();
	static DWORD SmtpProxyThread(DWORD arg);
	void StartProxyThread(CSmtpProxyMT* m_pCSmtpProxyMT);
	static DWORD SmtpClientThread(DWORD arg);
	void StartClientThread(SSmtp *pSSmtp);
	static DWORD SmtpDataThread(DWORD arg);
	static void StartDataThread(socket_pair *pspair);
	
};