| /* @(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC */ |
| /* |
| * 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, MERCHANTIBILITY 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 |
| */ |
| #if !defined(lint) && defined(SCCSIDS) |
| static char sccsid[] = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro"; |
| #endif |
| |
| /* |
| * xdr_array.c, Generic XDR routines implementation. |
| * |
| * Copyright (C) 1984, Sun Microsystems, Inc. |
| * |
| * These are the "non-trivial" xdr primitives used to serialize and de-serialize |
| * arrays. See xdr.h for more info on the interface to xdr. |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <rpc/types.h> |
| #include <rpc/xdr.h> |
| #include <libintl.h> |
| #include <limits.h> |
| |
| #ifdef USE_IN_LIBIO |
| # include <wchar.h> |
| #endif |
| |
| #define LASTUNSIGNED ((u_int)0-1) |
| |
| |
| /* |
| * XDR an array of arbitrary elements |
| * *addrp is a pointer to the array, *sizep is the number of elements. |
| * If addrp is NULL (*sizep * elsize) bytes are allocated. |
| * elsize is the size (in bytes) of each element, and elproc is the |
| * xdr procedure to call to handle each element of the array. |
| */ |
| bool_t |
| xdr_array (xdrs, addrp, sizep, maxsize, elsize, elproc) |
| XDR *xdrs; |
| caddr_t *addrp; /* array pointer */ |
| u_int *sizep; /* number of elements */ |
| u_int maxsize; /* max numberof elements */ |
| u_int elsize; /* size in bytes of each element */ |
| xdrproc_t elproc; /* xdr routine to handle each element */ |
| { |
| u_int i; |
| caddr_t target = *addrp; |
| u_int c; /* the actual element count */ |
| bool_t stat = TRUE; |
| |
| /* like strings, arrays are really counted arrays */ |
| if (!INTUSE(xdr_u_int) (xdrs, sizep)) |
| { |
| return FALSE; |
| } |
| c = *sizep; |
| /* |
| * XXX: Let the overflow possibly happen with XDR_FREE because mem_free() |
| * doesn't actually use its second argument anyway. |
| */ |
| if ((c > maxsize || c > UINT_MAX / elsize) && (xdrs->x_op != XDR_FREE)) |
| { |
| return FALSE; |
| } |
| |
| /* |
| * if we are deserializing, we may need to allocate an array. |
| * We also save time by checking for a null array if we are freeing. |
| */ |
| if (target == NULL) |
| switch (xdrs->x_op) |
| { |
| case XDR_DECODE: |
| if (c == 0) |
| return TRUE; |
| *addrp = target = calloc (c, elsize); |
| if (target == NULL) |
| { |
| (void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n")); |
| return FALSE; |
| } |
| break; |
| |
| case XDR_FREE: |
| return TRUE; |
| default: |
| break; |
| } |
| |
| /* |
| * now we xdr each element of array |
| */ |
| for (i = 0; (i < c) && stat; i++) |
| { |
| stat = (*elproc) (xdrs, target, LASTUNSIGNED); |
| target += elsize; |
| } |
| |
| /* |
| * the array may need freeing |
| */ |
| if (xdrs->x_op == XDR_FREE) |
| { |
| mem_free (*addrp, c * elsize); |
| *addrp = NULL; |
| } |
| return stat; |
| } |
| INTDEF(xdr_array) |
| |
| /* |
| * xdr_vector(): |
| * |
| * XDR a fixed length array. Unlike variable-length arrays, |
| * the storage of fixed length arrays is static and unfreeable. |
| * > basep: base of the array |
| * > size: size of the array |
| * > elemsize: size of each element |
| * > xdr_elem: routine to XDR each element |
| */ |
| bool_t |
| xdr_vector (xdrs, basep, nelem, elemsize, xdr_elem) |
| XDR *xdrs; |
| char *basep; |
| u_int nelem; |
| u_int elemsize; |
| xdrproc_t xdr_elem; |
| { |
| u_int i; |
| char *elptr; |
| |
| elptr = basep; |
| for (i = 0; i < nelem; i++) |
| { |
| if (!(*xdr_elem) (xdrs, elptr, LASTUNSIGNED)) |
| { |
| return FALSE; |
| } |
| elptr += elemsize; |
| } |
| return TRUE; |
| } |