00001 /********************************************************************* 00002 * RPC for the Windows NT Operating System 00003 * 1993 by Martin F. Gergeleit 00004 * Users may use, copy or modify Sun RPC for the Windows NT Operating 00005 * System according to the Sun copyright below. 00006 * 00007 * RPC for the Windows NT Operating System COMES WITH ABSOLUTELY NO 00008 * WARRANTY, NOR WILL I BE LIABLE FOR ANY DAMAGES INCURRED FROM THE 00009 * USE OF. USE ENTIRELY AT YOUR OWN RISK!!! 00010 *********************************************************************/ 00011 00012 /* @(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC */ 00013 /* 00014 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 00015 * unrestricted use provided that this legend is included on all tape 00016 * media and as a part of the software program in whole or part. Users 00017 * may copy or modify Sun RPC without charge, but are not authorized 00018 * to license or distribute it to anyone else except as part of a product or 00019 * program developed by the user. 00020 * 00021 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 00022 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 00023 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 00024 * 00025 * Sun RPC is provided with no support and without any obligation on the 00026 * part of Sun Microsystems, Inc. to assist in its use, correction, 00027 * modification or enhancement. 00028 * 00029 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 00030 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 00031 * OR ANY PART THEREOF. 00032 * 00033 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 00034 * or profits or other special, indirect and consequential damages, even if 00035 * Sun has been advised of the possibility of such damages. 00036 * 00037 * Sun Microsystems, Inc. 00038 * 2550 Garcia Avenue 00039 * Mountain View, California 94043 00040 */ 00041 #if !defined(lint) && defined(SCCSIDS) 00042 static char sccsid[] = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro"; 00043 #endif 00044 00045 /* 00046 * xdr_array.c, Generic XDR routines impelmentation. 00047 * 00048 * Copyright (C) 1984, Sun Microsystems, Inc. 00049 * 00050 * These are the "non-trivial" xdr primitives used to serialize and de-serialize 00051 * arrays. See xdr.h for more info on the interface to xdr. 00052 */ 00053 00054 #if !defined(UNDER_CE) && !defined(WINDOWS_CE) 00055 #include <stdio.h> 00056 #endif 00057 #include <stdlib.h> /* malloc() */ 00058 #include <string.h> /* memset() */ 00059 00060 #include "xdr.h" 00061 00062 #define LASTUNSIGNED ((u_int)0-1) 00063 00064 00065 /* 00066 * XDR an array of arbitrary elements 00067 * *addrp is a pointer to the array, *sizep is the number of elements. 00068 * If addrp is NULL (*sizep * elsize) bytes are allocated. 00069 * elsize is the size (in bytes) of each element, and elproc is the 00070 * xdr procedure to call to handle each element of the array. 00071 */ 00072 bool_t 00073 xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc) 00074 register XDR *xdrs; 00075 caddr_t *addrp; /* array pointer */ 00076 u_int *sizep; /* number of elements */ 00077 u_int maxsize; /* max numberof elements */ 00078 u_int elsize; /* size in bytes of each element */ 00079 xdrproc_t elproc; /* xdr routine to handle each element */ 00080 { 00081 register u_int i; 00082 register caddr_t target = *addrp; 00083 register u_int c; /* the actual element count */ 00084 register bool_t stat = TRUE; 00085 register u_int nodesize; 00086 00087 /* like strings, arrays are really counted arrays */ 00088 if (! xdr_u_int(xdrs, sizep)) { 00089 return (FALSE); 00090 } 00091 c = *sizep; 00092 if ((c > maxsize) && (xdrs->x_op != XDR_FREE)) { 00093 return (FALSE); 00094 } 00095 nodesize = c * elsize; 00096 00097 /* 00098 * if we are deserializing, we may need to allocate an array. 00099 * We also save time by checking for a null array if we are freeing. 00100 */ 00101 if (target == NULL) 00102 switch (xdrs->x_op) { 00103 case XDR_DECODE: 00104 if (c == 0) 00105 return (TRUE); 00106 *addrp = target = mem_alloc(nodesize); 00107 if (target == NULL) { 00108 #if !defined(UNDER_CE) && !defined(WINDOWS_CE) 00109 (void) fprintf(stderr, 00110 "xdr_array: out of memory\n"); 00111 #endif 00112 00113 return (FALSE); 00114 } 00115 memset(target, 0, nodesize); 00116 break; 00117 00118 case XDR_FREE: 00119 return (TRUE); 00120 } 00121 00122 /* 00123 * now we xdr each element of array 00124 */ 00125 for (i = 0; (i < c) && stat; i++) { 00126 stat = (*elproc)(xdrs, target, LASTUNSIGNED); 00127 target += elsize; 00128 } 00129 00130 /* 00131 * the array may need freeing 00132 */ 00133 if (xdrs->x_op == XDR_FREE) { 00134 mem_free(*addrp, nodesize); 00135 *addrp = NULL; 00136 } 00137 return (stat); 00138 } 00139 00140 /* 00141 * xdr_vector(): 00142 * 00143 * XDR a fixed length array. Unlike variable-length arrays, 00144 * the storage of fixed length arrays is static and unfreeable. 00145 * > basep: base of the array 00146 * > size: size of the array 00147 * > elemsize: size of each element 00148 * > xdr_elem: routine to XDR each element 00149 */ 00150 bool_t 00151 xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem) 00152 register XDR *xdrs; 00153 register char *basep; 00154 register u_int nelem; 00155 register u_int elemsize; 00156 register xdrproc_t xdr_elem; 00157 { 00158 register u_int i; 00159 register char *elptr; 00160 00161 elptr = basep; 00162 for (i = 0; i < nelem; i++) { 00163 if (! (*xdr_elem)(xdrs, elptr, LASTUNSIGNED)) { 00164 return(FALSE); 00165 } 00166 elptr += elemsize; 00167 } 00168 return(TRUE); 00169 }