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//==========================================================================

//

//      include/tftp_support.h

//

//      TFTP support

//

//==========================================================================

// ####BSDALTCOPYRIGHTBEGIN####                                             

// -------------------------------------------                              

// Portions of this software may have been derived from FreeBSD, OpenBSD,   

// or other sources, and if so are covered by the appropriate copyright     

// and license included herein.                                             

// -------------------------------------------                              

// ####BSDALTCOPYRIGHTEND####                                               

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas, andrew.lunn@ascom.ch

// Date:         2000-04-06

// Purpose:      

// Description:  

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

#ifndef _TFTP_SUPPORT_H_

#define _TFTP_SUPPORT_H_

#include <fcntl.h> // O_RDONLY

/*

 * File transfer modes

 */

#define TFTP_NETASCII   0              // Text files

#define TFTP_OCTET      1              // Binary files

/*

 * Errors

 */

// These initial 7 are passed across the net in "ERROR" packets.

#define TFTP_ENOTFOUND   1   /* file not found */

#define TFTP_EACCESS     2   /* access violation */

#define TFTP_ENOSPACE    3   /* disk full or allocation exceeded */

#define TFTP_EBADOP      4   /* illegal TFTP operation */

#define TFTP_EBADID      5   /* unknown transfer ID */

#define TFTP_EEXISTS     6   /* file already exists */

#define TFTP_ENOUSER     7   /* no such user */

// These extensions are return codes in our API, *never* passed on the net.

#define TFTP_TIMEOUT     8   /* operation timed out */

#define TFTP_NETERR      9   /* some sort of network error */

#define TFTP_INVALID    10   /* invalid parameter */

#define TFTP_PROTOCOL   11   /* protocol violation */

#define TFTP_TOOLARGE   12   /* file is larger than buffer */

/*

 * Server support

 */

struct tftpd_fileops {

    int (*open)(const char *, int);

    int (*close)(int);

    int (*write)(int, const void *, int);

    int (*read)(int, void *, int);

};

__externC int tftpd_start(int, struct tftpd_fileops *);

__externC int tftpd_stop(int);

/*

 * Client support

 */

/* IPv4 and IPv6 */

__externC int tftp_client_get(const char * const filename,

                              const char * const server,

                              const int port,

                              char * buff,

                              int len,

                              const int mode,

                              int * const err);

__externC int tftp_client_put(const char * const filename,

                              const char * const server,

                              const int port,

                              const char * buf,

                              int len,

                              const int mode,

                              int * const err);

/* IPv4 only */

__externC int tftp_get(const char * const filename,

                       const struct sockaddr_in * const server,

                       char * buf,

                       int len,

                       const int mode,

                       int * const error);

__externC int tftp_put(const char * const filename,

                       const struct sockaddr_in * const server,

                       const char * buffer,

                       int len,

                       const int mode,

                       int * const err);

#define TFTP_TIMEOUT_PERIOD  5          // Seconds between retries

#define TFTP_TIMEOUT_MAX    50          // Max timeouts over all blocks

#define TFTP_RETRIES_MAX     5          // retries per block before giving up

#endif // _TFTP_SUPPORT_H_