/*  Headers for the handling of RPC

    ©1999 Joseph Walton

    This software is distributed under the terms of the GNU General Public
    License; either version 2 of the License, or (at your option) any
    later version.
*/

#ifndef NFSD_RPC_H
#define NFSD_RPC_H

#include <exec/types.h>
#include <sys/types.h>

#include <netinet/in.h>

/* The type that XDR takes on the wire */
typedef LONG int32;

#define SINT32 (sizeof(int32))

#define INT32S(bytes) (((bytes) + 3) / SINT32)

#define G_INT(x) (int)ntohl(x)
#define G_UINT(x) (unsigned int)ntohl(x)

#define G_ENUM(x) G_INT(x)

#define P_INT(x) (int32)htonl(x)
#define P_UINT(x) (int32)htonl(x)

#define P_ENUM(x) G_INT(x)
#define P_ENUM_FALSE P_ENUM(0)
#define P_ENUM_TRUE P_ENUM(1)

/* What kind of RPC are we concerned with? */
#define RPC_VERSION 2

// Kinds of message
#define CALL 0
#define REPLY 1

// Status of a reply
#define MSG_ACCEPTED 0
#define MSG_DENIED 1

// Reasons for rejecting message
#define RPC_MISMATCH 0
#define AUTH_ERROR 1

// Reasons for AUTH_ERROR
#define AUTH_TOOWEAK 5
#define AUTH_FAILED 7

// Status of an accepted message
#define SUCCESS 0
#define PROG_UNAVAIL 1
#define PROG_MISMATCH 2
#define PROC_UNAVAIL 3
#define GARBAGE_ARGS 4
#define SYSTEM_ERR 5

// Kinds of authorisation
#define AUTH_NONE 0
#define AUTH_SYS 1
#define AUTH_SHORT 2
// One day, perhaps...
#define AUTH_DES 3
#define AUTH_KERB 4

#define AUTH_SYS_MACHINENAMELEN 256

struct authunix {
        BOOL isUnix;
        char machineName[AUTH_SYS_MACHINENAMELEN];
        u_int uid;
        u_int gid;
        u_int numGids;
        u_int gids[16];
};

struct Call {
    int c_program;
    int c_version;
    int c_procedure;
    struct authunix c_auth;
    struct sockaddr_in c_from;
    BOOL c_hasBeenPrinted; /* Has the source been identified on the console? */
};

/* Prototypes */
u_int getUnsignedInt(int32);
int getInt(int32);
int32 *getString(int32 *ptr, int32 *limit, char *buf, int bufchars);
int32 *readAuth(int32 *ptr, int32 *limit, struct authunix *auth);
int32 *PrepareAcceptedHeader(int32 id, int32 *ptr);

#endif