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tcp.h

/*** This Programs/Libraries are (C)opyright by Sebastian Krahmer.
 *** You may use it under the terms of the GPL. You should have
 *** already received the file COPYING that shows you your rights.
 *** Please look at COPYING for further license-details.
 ***  
 *** THERE IS ABSOLUTELY NO WARRANTY. SO YOU USE IT AT YOUR OWN RISK.
 *** IT WAS WRITTEN IN THE HOPE THAT IT WILL BE USEFULL. I AM NOT RESPONSIBLE
 *** FOR ANY DAMAGE YOU MAYBE GET DUE TO USING MY PROGRAMS.
 ***/


#ifndef _TCP_H_
#define _TCP_H_

#include "usi-structs.h"
#include "datalink.h"
#include "ip.h"

namespace usipp {

class TCP : public IP {
private:
        struct tcphdr tcph;
        char tcpOptions[40];
        struct pseudohdr pseudo;
public:
        
        TCP(const char*);

        virtual ~TCP();
  
        TCP &operator=(const TCP&);    

        TCP(const TCP&);

        u_int16_t get_srcport();

        u_int16_t get_dstport();

        u_int32_t  get_seq();

        u_int32_t  get_ack();

        u_int8_t get_off();

        u_int8_t get_flags();      
      
        
        u_int16_t get_win();
      
        
        u_int16_t get_tcpsum();
        
        u_int16_t get_urg();
      
        int set_srcport(u_int16_t);

        int set_dstport(u_int16_t);

        int set_seq(u_int32_t);

        
        int set_ack(u_int32_t);

        
        int set_off(u_int8_t);

        
        int set_flags(u_int8_t);

        
        int set_win(u_int16_t);

        int set_tcpsum(u_int16_t);

        
        int set_urg(u_int16_t);
     
        tcphdr get_tcphdr();

        /* The following functions are already defined in IP {}.
         * We need them too for TCP {}, and TCP{} calls IP::function() then.
         */
 

        virtual int sniffpack(void *buf, size_t buflen);
        
        virtual int sendpack(void *payload, size_t paylen);

        virtual int sendpack(char *pay_string);
      
        virtual int init_device(char *, int, size_t);

        int set_tcpopt(char kind, unsigned char len, union tcp_options t);

        int reset_tcpopt();
      
        int get_tcpopt(char *);
};


} // namespace usipp

#endif // _TCP_H_

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