#if !defined(lint) && defined(SCCSIDS)
static char sccsid[] = "@(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";
#endif
#include <gssrpc/types.h>
#include <gssrpc/xdr.h>
#include <netinet/in.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
static bool_t xdrmem_getlong(XDR *, long *);
static bool_t xdrmem_putlong(XDR *, long *);
static bool_t xdrmem_getbytes(XDR *, caddr_t, unsigned int);
static bool_t xdrmem_putbytes(XDR *, caddr_t, unsigned int);
static unsigned int xdrmem_getpos(XDR *);
static bool_t xdrmem_setpos(XDR *, unsigned int);
static rpc_int32 * xdrmem_inline(XDR *, int);
static void xdrmem_destroy(XDR *);
static struct xdr_ops xdrmem_ops = {
xdrmem_getlong,
xdrmem_putlong,
xdrmem_getbytes,
xdrmem_putbytes,
xdrmem_getpos,
xdrmem_setpos,
xdrmem_inline,
xdrmem_destroy
};
void
xdrmem_create(xdrs, addr, size, op)
register XDR *xdrs;
caddr_t addr;
unsigned int size;
enum xdr_op op;
{
xdrs->x_op = op;
xdrs->x_ops = &xdrmem_ops;
xdrs->x_private = xdrs->x_base = addr;
xdrs->x_handy = (size > INT_MAX) ? INT_MAX : size;
}
static void
xdrmem_destroy(xdrs)
XDR *xdrs;
{
}
static bool_t
xdrmem_getlong(xdrs, lp)
register XDR *xdrs;
long *lp;
{
if (xdrs->x_handy < sizeof(rpc_int32))
return (FALSE);
else
xdrs->x_handy -= sizeof(rpc_int32);
*lp = (long)ntohl(*((rpc_u_int32 *)(xdrs->x_private)));
xdrs->x_private = (char *)xdrs->x_private + sizeof(rpc_int32);
return (TRUE);
}
static bool_t
xdrmem_putlong(xdrs, lp)
register XDR *xdrs;
long *lp;
{
if (xdrs->x_handy < sizeof(rpc_int32))
return (FALSE);
else
xdrs->x_handy -= sizeof(rpc_int32);
*(rpc_int32 *)xdrs->x_private = (rpc_int32)htonl((rpc_u_int32)(*lp));
xdrs->x_private = (char *)xdrs->x_private + sizeof(rpc_int32);
return (TRUE);
}
static bool_t
xdrmem_getbytes(xdrs, addr, len)
register XDR *xdrs;
caddr_t addr;
register unsigned int len;
{
if (xdrs->x_handy < len)
return (FALSE);
else
xdrs->x_handy -= len;
memmove(addr, xdrs->x_private, len);
xdrs->x_private = (char *)xdrs->x_private + len;
return (TRUE);
}
static bool_t
xdrmem_putbytes(xdrs, addr, len)
register XDR *xdrs;
caddr_t addr;
register unsigned int len;
{
if (xdrs->x_handy < len)
return (FALSE);
else
xdrs->x_handy -= len;
memmove(xdrs->x_private, addr, len);
xdrs->x_private = (char *)xdrs->x_private + len;
return (TRUE);
}
static unsigned int
xdrmem_getpos(xdrs)
register XDR *xdrs;
{
return (unsigned int)((unsigned long)xdrs->x_private - (unsigned long)xdrs->x_base);
}
static bool_t
xdrmem_setpos(xdrs, pos)
register XDR *xdrs;
unsigned int pos;
{
register caddr_t newaddr = xdrs->x_base + pos;
register caddr_t lastaddr = (char *) xdrs->x_private + xdrs->x_handy;
if ((long)newaddr > (long)lastaddr)
return (FALSE);
xdrs->x_private = newaddr;
xdrs->x_handy = (int)((long)lastaddr - (long)newaddr);
return (TRUE);
}
static rpc_int32 *
xdrmem_inline(xdrs, len)
register XDR *xdrs;
int len;
{
rpc_int32 *buf = 0;
if (len >= 0 && xdrs->x_handy >= len) {
xdrs->x_handy -= len;
buf = (rpc_int32 *) xdrs->x_private;
xdrs->x_private = (char *)xdrs->x_private + len;
}
return (buf);
}