#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)xdr.c 1.35 87/08/12";
#endif
#include <stdio.h>
#include <string.h>
#include <gssrpc/types.h>
#include <gssrpc/xdr.h>
#define XDR_FALSE ((long) 0)
#define XDR_TRUE ((long) 1)
#define LASTUNSIGNED ((u_int) 0-1)
static char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 };
void
xdr_free(xdrproc_t proc, void *objp)
{
XDR x;
x.x_op = XDR_FREE;
(*proc)(&x, objp);
}
bool_t
xdr_void(XDR *xdrs, void *addr)
{
return (TRUE);
}
bool_t
xdr_int(XDR *xdrs, int *ip)
{
long l;
switch (xdrs->x_op) {
case XDR_ENCODE:
if (*ip > 0x7fffffffL || *ip < -0x7fffffffL - 1L)
return (FALSE);
l = (long) *ip;
return (XDR_PUTLONG(xdrs, &l));
case XDR_DECODE:
if (!XDR_GETLONG(xdrs, &l))
return (FALSE);
if (l > INT_MAX || l < INT_MIN)
return (FALSE);
*ip = (int) l;
case XDR_FREE:
return (TRUE);
}
return(FALSE);
}
bool_t
xdr_u_int(XDR *xdrs, u_int *up)
{
u_long l;
switch (xdrs->x_op) {
case XDR_ENCODE:
if (*up > 0xffffffffUL)
return (FALSE);
l = (u_long)*up;
return (XDR_PUTLONG(xdrs, (long *) &l));
case XDR_DECODE:
if (!XDR_GETLONG(xdrs, (long *) &l))
return (FALSE);
if (l > UINT_MAX)
return (FALSE);
*up = (u_int) l;
return (TRUE);
case XDR_FREE:
return (TRUE);
}
return(FALSE);
}
bool_t
xdr_long(XDR *xdrs, long *lp)
{
switch (xdrs->x_op) {
case XDR_ENCODE:
if (*lp > 0x7fffffffL || *lp < -0x7fffffffL - 1L)
return (FALSE);
return (XDR_PUTLONG(xdrs, lp));
case XDR_DECODE:
return (XDR_GETLONG(xdrs, lp));
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_u_long(XDR *xdrs, u_long *ulp)
{
switch (xdrs->x_op) {
case XDR_ENCODE:
if (*ulp > 0xffffffffUL)
return (FALSE);
return (XDR_PUTLONG(xdrs, (long *) ulp));
case XDR_DECODE:
return (XDR_GETLONG(xdrs, (long *) ulp));
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_short(register XDR *xdrs, short *sp)
{
long l;
switch (xdrs->x_op) {
case XDR_ENCODE:
l = (long) *sp;
return (XDR_PUTLONG(xdrs, &l));
case XDR_DECODE:
if (!XDR_GETLONG(xdrs, &l)) {
return (FALSE);
}
if (l > SHRT_MAX || l < SHRT_MIN)
return (FALSE);
*sp = (short) l;
return (TRUE);
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_u_short(register XDR *xdrs, u_short *usp)
{
u_long l;
switch (xdrs->x_op) {
case XDR_ENCODE:
l = (u_long) *usp;
return (XDR_PUTLONG(xdrs, (long *) &l));
case XDR_DECODE:
if (!XDR_GETLONG(xdrs, (long *) &l)) {
return (FALSE);
}
*usp = (u_short) l;
return (TRUE);
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_char(XDR *xdrs, char *cp)
{
int i;
i = (*cp);
if (!xdr_int(xdrs, &i)) {
return (FALSE);
}
*cp = i;
return (TRUE);
}
bool_t
xdr_u_char(XDR *xdrs, u_char *cp)
{
u_int u;
u = (*cp);
if (!xdr_u_int(xdrs, &u)) {
return (FALSE);
}
*cp = u;
return (TRUE);
}
bool_t
xdr_bool(register XDR *xdrs, bool_t *bp)
{
long lb;
switch (xdrs->x_op) {
case XDR_ENCODE:
lb = *bp ? XDR_TRUE : XDR_FALSE;
return (XDR_PUTLONG(xdrs, &lb));
case XDR_DECODE:
if (!XDR_GETLONG(xdrs, &lb)) {
return (FALSE);
}
*bp = (lb == XDR_FALSE) ? FALSE : TRUE;
return (TRUE);
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_enum(XDR *xdrs, enum_t *ep)
{
#ifndef lint
enum sizecheck { SIZEVAL };
if (sizeof (enum sizecheck) == sizeof (long)) {
return (xdr_long(xdrs, (long *)ep));
} else if (sizeof (enum sizecheck) == sizeof (int)) {
return (xdr_int(xdrs, (int *)ep));
} else if (sizeof (enum sizecheck) == sizeof (short)) {
return (xdr_short(xdrs, (short *)ep));
} else {
return (FALSE);
}
#else
(void) (xdr_short(xdrs, (short *)ep));
return (xdr_long(xdrs, (long *)ep));
#endif
}
bool_t
xdr_opaque(XDR *xdrs, caddr_t cp, u_int cnt)
{
register u_int rndup;
static int crud[BYTES_PER_XDR_UNIT];
if (cnt == 0)
return (TRUE);
rndup = cnt % BYTES_PER_XDR_UNIT;
if (rndup > 0)
rndup = BYTES_PER_XDR_UNIT - rndup;
if (xdrs->x_op == XDR_DECODE) {
if (!XDR_GETBYTES(xdrs, cp, cnt)) {
return (FALSE);
}
if (rndup == 0)
return (TRUE);
return (XDR_GETBYTES(xdrs, (caddr_t) (void *)crud, rndup));
}
if (xdrs->x_op == XDR_ENCODE) {
if (!XDR_PUTBYTES(xdrs, cp, cnt)) {
return (FALSE);
}
if (rndup == 0)
return (TRUE);
return (XDR_PUTBYTES(xdrs, xdr_zero, rndup));
}
if (xdrs->x_op == XDR_FREE) {
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_bytes(
XDR *xdrs,
char **cpp,
u_int *sizep,
u_int maxsize)
{
register char *sp = *cpp;
register u_int nodesize;
if (! xdr_u_int(xdrs, sizep)) {
return (FALSE);
}
nodesize = *sizep;
if ((nodesize > maxsize) && (xdrs->x_op != XDR_FREE)) {
return (FALSE);
}
switch (xdrs->x_op) {
case XDR_DECODE:
if (nodesize == 0) {
return (TRUE);
}
if (sp == NULL) {
*cpp = sp = (char *)mem_alloc(nodesize);
}
if (sp == NULL) {
(void) fprintf(stderr, "xdr_bytes: out of memory\n");
return (FALSE);
}
case XDR_ENCODE:
return (xdr_opaque(xdrs, sp, nodesize));
case XDR_FREE:
if (sp != NULL) {
mem_free(sp, nodesize);
*cpp = NULL;
}
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_netobj(XDR *xdrs, struct netobj *np)
{
return (xdr_bytes(xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ));
}
bool_t
xdr_int32(XDR *xdrs, int32_t *ip)
{
long l;
switch (xdrs->x_op) {
case XDR_ENCODE:
l = *ip;
return (xdr_long(xdrs, &l));
case XDR_DECODE:
if (!xdr_long(xdrs, &l)) {
return (FALSE);
}
*ip = l;
return (TRUE);
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_u_int32(XDR *xdrs, uint32_t *up)
{
u_long ul;
switch (xdrs->x_op) {
case XDR_ENCODE:
ul = *up;
return (xdr_u_long(xdrs, &ul));
case XDR_DECODE:
if (!xdr_u_long(xdrs, &ul)) {
return (FALSE);
}
*up = ul;
return (TRUE);
case XDR_FREE:
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_union(
XDR *xdrs,
enum_t *dscmp,
char *unp,
struct xdr_discrim *choices,
xdrproc_t dfault
)
{
register enum_t dscm;
if (! xdr_enum(xdrs, dscmp)) {
return (FALSE);
}
dscm = *dscmp;
for (; choices->proc != NULL_xdrproc_t; choices++) {
if (choices->value == dscm)
return ((*(choices->proc))(xdrs, unp, LASTUNSIGNED));
}
return ((dfault == NULL_xdrproc_t) ? FALSE :
(*dfault)(xdrs, unp, LASTUNSIGNED));
}
bool_t
xdr_string(XDR *xdrs, char **cpp, u_int maxsize)
{
register char *sp = *cpp;
u_int size;
u_int nodesize;
switch (xdrs->x_op) {
case XDR_FREE:
if (sp == NULL) {
return(TRUE);
}
case XDR_ENCODE:
size = strlen(sp);
break;
case XDR_DECODE:
break;
}
if (! xdr_u_int(xdrs, &size)) {
return (FALSE);
}
if (size >= maxsize) {
return (FALSE);
}
nodesize = size + 1;
switch (xdrs->x_op) {
case XDR_DECODE:
if (nodesize == 0) {
return (TRUE);
}
if (sp == NULL)
*cpp = sp = (char *)mem_alloc(nodesize);
if (sp == NULL) {
(void) fprintf(stderr, "xdr_string: out of memory\n");
return (FALSE);
}
sp[size] = 0;
case XDR_ENCODE:
return (xdr_opaque(xdrs, sp, size));
case XDR_FREE:
mem_free(sp, nodesize);
*cpp = NULL;
return (TRUE);
}
return (FALSE);
}
bool_t
xdr_wrapstring(XDR *xdrs, char **cpp)
{
if (xdr_string(xdrs, cpp, LASTUNSIGNED)) {
return (TRUE);
}
return (FALSE);
}