/*
 * structures and defines for the tftp protocol
 */
#ifndef __TFTP_H__
#define __TFTP_H__

/* opcodes */
enum 
{
  RRQ = 1,
  WRQ,
  DATA,
  ACK,
  ERROR
};

/* errors */
enum
{
  errUNDEF = 0,
  errNOFILE,
  errACCESS,
  errDISKFULL,
  errOPCODE,
  errTID,
  errEXIST,
  errNOUSER
};

typedef struct {
  int opcode;
  char data[2];
} rrq_packet, wrq_packet;

typedef struct {
  int opcode;
  int block;
  char data[2];
} data_packet;

typedef struct ack_packet {
  int opcode;
  int block;
} ack_packet;


typedef struct {
  int opcode;
  int error;
  char message[2];
} error_packet;

#endif