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51bb585207
HardenedBSD/include/rpc/xdr.h
Alfred Perlstein edea2cc391 The TI-RPC spammed over a '#ifdef _KERNEL' hack for the xdrproc_t typedef 
revert the spammage

Pointed out by: bde
2001-03-20 08:26:22 +00:00

366 lines
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/* $NetBSD: xdr.h,v 1.19 2000/07/17 05:00:45 matt Exp $ */
/*
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
* unrestricted use provided that this legend is included on all tape
* media and as a part of the software program in whole or part. Users
* may copy or modify Sun RPC without charge, but are not authorized
* to license or distribute it to anyone else except as part of a product or
* program developed by the user.
*
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
* WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
*
* Sun RPC is provided with no support and without any obligation on the
* part of Sun Microsystems, Inc. to assist in its use, correction,
* modification or enhancement.
*
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
* OR ANY PART THEREOF.
*
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
* or profits or other special, indirect and consequential damages, even if
* Sun has been advised of the possibility of such damages.
*
* Sun Microsystems, Inc.
* 2550 Garcia Avenue
* Mountain View, California 94043
*
* from: @(#)xdr.h 1.19 87/04/22 SMI
* from: @(#)xdr.h 2.2 88/07/29 4.0 RPCSRC
* $FreeBSD$
*/
/*
* xdr.h, External Data Representation Serialization Routines.
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*/
#ifndef _RPC_XDR_H
#define _RPC_XDR_H
#include <sys/cdefs.h>
/*
* XDR provides a conventional way for converting between C data
* types and an external bit-string representation. Library supplied
* routines provide for the conversion on built-in C data types. These
* routines and utility routines defined here are used to help implement
* a type encode/decode routine for each user-defined type.
*
* Each data type provides a single procedure which takes two arguments:
*
* bool_t
* xdrproc(xdrs, argresp)
* XDR *xdrs;
* <type> *argresp;
*
* xdrs is an instance of a XDR handle, to which or from which the data
* type is to be converted. argresp is a pointer to the structure to be
* converted. The XDR handle contains an operation field which indicates
* which of the operations (ENCODE, DECODE * or FREE) is to be performed.
*
* XDR_DECODE may allocate space if the pointer argresp is null. This
* data can be freed with the XDR_FREE operation.
*
* We write only one procedure per data type to make it easy
* to keep the encode and decode procedures for a data type consistent.
* In many cases the same code performs all operations on a user defined type,
* because all the hard work is done in the component type routines.
* decode as a series of calls on the nested data types.
*/
/*
* Xdr operations. XDR_ENCODE causes the type to be encoded into the
* stream. XDR_DECODE causes the type to be extracted from the stream.
* XDR_FREE can be used to release the space allocated by an XDR_DECODE
* request.
*/
enum xdr_op {
XDR_ENCODE=0,
XDR_DECODE=1,
XDR_FREE=2
};
/*
* This is the number of bytes per unit of external data.
*/
#define BYTES_PER_XDR_UNIT (4)
#define RNDUP(x) ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \
* BYTES_PER_XDR_UNIT)
/*
* The XDR handle.
* Contains operation which is being applied to the stream,
* an operations vector for the particular implementation (e.g. see xdr_mem.c),
* and two private fields for the use of the particular implementation.
*/
typedef struct __rpc_xdr {
enum xdr_op x_op; /* operation; fast additional param */
const struct xdr_ops {
/* get a long from underlying stream */
bool_t (*x_getlong) __P((struct __rpc_xdr *, long *));
/* put a long to " */
bool_t (*x_putlong) __P((struct __rpc_xdr *, const long *));
/* get some bytes from " */
bool_t (*x_getbytes) __P((struct __rpc_xdr *, char *, u_int));
/* put some bytes to " */
bool_t (*x_putbytes) __P((struct __rpc_xdr *, const char *, u_int));
/* returns bytes off from beginning */
u_int (*x_getpostn) __P((struct __rpc_xdr *));
/* lets you reposition the stream */
bool_t (*x_setpostn) __P((struct __rpc_xdr *, u_int));
/* buf quick ptr to buffered data */
int32_t *(*x_inline) __P((struct __rpc_xdr *, u_int));
/* free privates of this xdr_stream */
void (*x_destroy) __P((struct __rpc_xdr *));
bool_t (*x_control) __P((struct __rpc_xdr *, int, void *));
} *x_ops;
char * x_public; /* users' data */
void * x_private; /* pointer to private data */
char * x_base; /* private used for position info */
int x_handy; /* extra private word */
} XDR;
/*
* A xdrproc_t exists for each data type which is to be encoded or decoded.
*
* The second argument to the xdrproc_t is a pointer to an opaque pointer.
* The opaque pointer generally points to a structure of the data type
* to be decoded. If this pointer is 0, then the type routines should
* allocate dynamic storage of the appropriate size and return it.
*/
#ifdef _KERNEL
typedef bool_t (*xdrproc_t) __P((XDR *, void *, u_int));
#else
/*
* XXX can't actually prototype it, because some take three args!!!
*/
typedef bool_t (*xdrproc_t) __P((/* XDR *, void *, u_int */));
#endif
/*
* Operations defined on a XDR handle
*
* XDR *xdrs;
* long *longp;
* char * addr;
* u_int len;
* u_int pos;
*/
#define XDR_GETLONG(xdrs, longp) \
(*(xdrs)->x_ops->x_getlong)(xdrs, longp)
#define xdr_getlong(xdrs, longp) \
(*(xdrs)->x_ops->x_getlong)(xdrs, longp)
#define XDR_PUTLONG(xdrs, longp) \
(*(xdrs)->x_ops->x_putlong)(xdrs, longp)
#define xdr_putlong(xdrs, longp) \
(*(xdrs)->x_ops->x_putlong)(xdrs, longp)
static __inline int
xdr_getint32(XDR *xdrs, int32_t *ip)
{
long l;
if (!xdr_getlong(xdrs, &l))
return (FALSE);
*ip = (int32_t)l;
return (TRUE);
}
static __inline int
xdr_putint32(XDR *xdrs, int32_t *ip)
{
long l;
l = (long)*ip;
return xdr_putlong(xdrs, &l);
}
#define XDR_GETINT32(xdrs, int32p) xdr_getint32(xdrs, int32p)
#define XDR_PUTINT32(xdrs, int32p) xdr_putint32(xdrs, int32p)
#define XDR_GETBYTES(xdrs, addr, len) \
(*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len)
#define xdr_getbytes(xdrs, addr, len) \
(*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len)
#define XDR_PUTBYTES(xdrs, addr, len) \
(*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len)
#define xdr_putbytes(xdrs, addr, len) \
(*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len)
#define XDR_GETPOS(xdrs) \
(*(xdrs)->x_ops->x_getpostn)(xdrs)
#define xdr_getpos(xdrs) \
(*(xdrs)->x_ops->x_getpostn)(xdrs)
#define XDR_SETPOS(xdrs, pos) \
(*(xdrs)->x_ops->x_setpostn)(xdrs, pos)
#define xdr_setpos(xdrs, pos) \
(*(xdrs)->x_ops->x_setpostn)(xdrs, pos)
#define XDR_INLINE(xdrs, len) \
(*(xdrs)->x_ops->x_inline)(xdrs, len)
#define xdr_inline(xdrs, len) \
(*(xdrs)->x_ops->x_inline)(xdrs, len)
#define XDR_DESTROY(xdrs) \
if ((xdrs)->x_ops->x_destroy) \
(*(xdrs)->x_ops->x_destroy)(xdrs)
#define xdr_destroy(xdrs) \
if ((xdrs)->x_ops->x_destroy) \
(*(xdrs)->x_ops->x_destroy)(xdrs)
#define XDR_CONTROL(xdrs, req, op) \
if ((xdrs)->x_ops->x_control) \
(*(xdrs)->x_ops->x_control)(xdrs, req, op)
#define xdr_control(xdrs, req, op) XDR_CONTROL(xdrs, req, op)
/*
* Solaris strips the '_t' from these types -- not sure why.
* But, let's be compatible.
*/
#define xdr_rpcvers(xdrs, versp) xdr_u_int32(xdrs, versp)
#define xdr_rpcprog(xdrs, progp) xdr_u_int32(xdrs, progp)
#define xdr_rpcproc(xdrs, procp) xdr_u_int32(xdrs, procp)
#define xdr_rpcprot(xdrs, protp) xdr_u_int32(xdrs, protp)
#define xdr_rpcport(xdrs, portp) xdr_u_int32(xdrs, portp)
/*
* Support struct for discriminated unions.
* You create an array of xdrdiscrim structures, terminated with
* a entry with a null procedure pointer. The xdr_union routine gets
* the discriminant value and then searches the array of structures
* for a matching value. If a match is found the associated xdr routine
* is called to handle that part of the union. If there is
* no match, then a default routine may be called.
* If there is no match and no default routine it is an error.
*/
#define NULL_xdrproc_t ((xdrproc_t)0)
struct xdr_discrim {
int value;
xdrproc_t proc;
};
/*
* In-line routines for fast encode/decode of primitive data types.
* Caveat emptor: these use single memory cycles to get the
* data from the underlying buffer, and will fail to operate
* properly if the data is not aligned. The standard way to use these
* is to say:
* if ((buf = XDR_INLINE(xdrs, count)) == NULL)
* return (FALSE);
* <<< macro calls >>>
* where ``count'' is the number of bytes of data occupied
* by the primitive data types.
*
* N.B. and frozen for all time: each data type here uses 4 bytes
* of external representation.
*/
#define IXDR_GET_INT32(buf) ((int32_t)ntohl((u_int32_t)*(buf)++))
#define IXDR_PUT_INT32(buf, v) (*(buf)++ =(int32_t)htonl((u_int32_t)v))
#define IXDR_GET_U_INT32(buf) ((u_int32_t)IXDR_GET_INT32(buf))
#define IXDR_PUT_U_INT32(buf, v) IXDR_PUT_INT32((buf), ((int32_t)(v)))
#define IXDR_GET_LONG(buf) ((long)ntohl((u_int32_t)*(buf)++))
#define IXDR_PUT_LONG(buf, v) (*(buf)++ =(int32_t)htonl((u_int32_t)v))
#define IXDR_GET_BOOL(buf) ((bool_t)IXDR_GET_LONG(buf))
#define IXDR_GET_ENUM(buf, t) ((t)IXDR_GET_LONG(buf))
#define IXDR_GET_U_LONG(buf) ((u_long)IXDR_GET_LONG(buf))
#define IXDR_GET_SHORT(buf) ((short)IXDR_GET_LONG(buf))
#define IXDR_GET_U_SHORT(buf) ((u_short)IXDR_GET_LONG(buf))
#define IXDR_PUT_BOOL(buf, v) IXDR_PUT_LONG((buf), (v))
#define IXDR_PUT_ENUM(buf, v) IXDR_PUT_LONG((buf), (v))
#define IXDR_PUT_U_LONG(buf, v) IXDR_PUT_LONG((buf), (v))
#define IXDR_PUT_SHORT(buf, v) IXDR_PUT_LONG((buf), (v))
#define IXDR_PUT_U_SHORT(buf, v) IXDR_PUT_LONG((buf), (v))
/*
* These are the "generic" xdr routines.
*/
__BEGIN_DECLS
extern bool_t xdr_void __P((void));
extern bool_t xdr_int __P((XDR *, int *));
extern bool_t xdr_u_int __P((XDR *, u_int *));
extern bool_t xdr_long __P((XDR *, long *));
extern bool_t xdr_u_long __P((XDR *, u_long *));
extern bool_t xdr_short __P((XDR *, short *));
extern bool_t xdr_u_short __P((XDR *, u_short *));
extern bool_t xdr_int16_t __P((XDR *, int16_t *));
extern bool_t xdr_u_int16_t __P((XDR *, u_int16_t *));
extern bool_t xdr_int32_t __P((XDR *, int32_t *));
extern bool_t xdr_u_int32_t __P((XDR *, u_int32_t *));
extern bool_t xdr_int64_t __P((XDR *, int64_t *));
extern bool_t xdr_u_int64_t __P((XDR *, u_int64_t *));
extern bool_t xdr_bool __P((XDR *, bool_t *));
extern bool_t xdr_enum __P((XDR *, enum_t *));
extern bool_t xdr_array __P((XDR *, char **, u_int *, u_int, u_int, xdrproc_t));
extern bool_t xdr_bytes __P((XDR *, char **, u_int *, u_int));
extern bool_t xdr_opaque __P((XDR *, char *, u_int));
extern bool_t xdr_string __P((XDR *, char **, u_int));
extern bool_t xdr_union __P((XDR *, enum_t *, char *, const struct xdr_discrim *, xdrproc_t));
extern bool_t xdr_char __P((XDR *, char *));
extern bool_t xdr_u_char __P((XDR *, u_char *));
extern bool_t xdr_vector __P((XDR *, char *, u_int, u_int, xdrproc_t));
extern bool_t xdr_float __P((XDR *, float *));
extern bool_t xdr_double __P((XDR *, double *));
extern bool_t xdr_quadruple __P((XDR *, long double *));
extern bool_t xdr_reference __P((XDR *, char **, u_int, xdrproc_t));
extern bool_t xdr_pointer __P((XDR *, char **, u_int, xdrproc_t));
extern bool_t xdr_wrapstring __P((XDR *, char **));
extern void xdr_free __P((xdrproc_t, char *));
extern bool_t xdr_hyper __P((XDR *, quad_t *));
extern bool_t xdr_u_hyper __P((XDR *, u_quad_t *));
extern bool_t xdr_longlong_t __P((XDR *, quad_t *));
extern bool_t xdr_u_longlong_t __P((XDR *, u_quad_t *));
__END_DECLS
/*
* Common opaque bytes objects used by many rpc protocols;
* declared here due to commonality.
*/
#define MAX_NETOBJ_SZ 1024
struct netobj {
u_int n_len;
char *n_bytes;
};
typedef struct netobj netobj;
extern bool_t xdr_netobj __P((XDR *, struct netobj *));
/*
* These are the public routines for the various implementations of
* xdr streams.
*/
__BEGIN_DECLS
/* XDR using memory buffers */
extern void xdrmem_create __P((XDR *, char *, u_int, enum xdr_op));
/* XDR using stdio library */
#ifdef _STDIO_H_
extern void xdrstdio_create __P((XDR *, FILE *, enum xdr_op));
#endif
/* XDR pseudo records for tcp */
extern void xdrrec_create __P((XDR *, u_int, u_int, char *,
int (*) __P((char *, char *, int)),
int (*) __P((char *, char *, int))));
/* make end of xdr record */
extern bool_t xdrrec_endofrecord __P((XDR *, int));
/* move to beginning of next record */
extern bool_t xdrrec_skiprecord __P((XDR *));
/* true if no more input */
extern bool_t xdrrec_eof __P((XDR *));
extern u_int xdrrec_readbytes __P((XDR *, caddr_t, u_int));
__END_DECLS
#endif /* !_RPC_XDR_H */
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