1 2 /* 3 * Copyright (c) 2009, Sun Microsystems, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * - Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * - Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * - Neither the name of Sun Microsystems, Inc. nor the names of its 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 //#include <sys/cdefs.h> 31 32 /* 33 * xdr_array.c, Generic XDR routines impelmentation. 34 * 35 * Copyright (C) 1984, Sun Microsystems, Inc. 36 * 37 * These are the "non-trivial" xdr primitives used to serialize and de-serialize 38 * arrays. See xdr.h for more info on the interface to xdr. 39 */ 40 41 #include <wintirpc.h> 42 #include "namespace.h" 43 //#include <err.h> 44 //#include <limits.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 49 #include <rpc/types.h> 50 #include <rpc/xdr.h> 51 #include "un-namespace.h" 52 53 /* 54 * XDR an array of arbitrary elements 55 * *addrp is a pointer to the array, *sizep is the number of elements. 56 * If addrp is NULL (*sizep * elsize) bytes are allocated. 57 * elsize is the size (in bytes) of each element, and elproc is the 58 * xdr procedure to call to handle each element of the array. 59 */ 60 bool_t 61 xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc) 62 XDR *xdrs; 63 caddr_t *addrp; /* array pointer */ 64 u_int *sizep; /* number of elements */ 65 u_int maxsize; /* max numberof elements */ 66 u_int elsize; /* size in bytes of each element */ 67 xdrproc_t elproc; /* xdr routine to handle each element */ 68 { 69 u_int i; 70 caddr_t target = *addrp; 71 u_int c; /* the actual element count */ 72 bool_t stat = TRUE; 73 u_int nodesize; 74 75 /* like strings, arrays are really counted arrays */ 76 if (!xdr_u_int(xdrs, sizep)) { 77 return (FALSE); 78 } 79 c = *sizep; 80 if ((c > maxsize || UINT_MAX/elsize < c) && 81 (xdrs->x_op != XDR_FREE)) { 82 return (FALSE); 83 } 84 nodesize = c * elsize; 85 86 /* 87 * if we are deserializing, we may need to allocate an array. 88 * We also save time by checking for a null array if we are freeing. 89 */ 90 if (target == NULL) 91 switch (xdrs->x_op) { 92 case XDR_DECODE: 93 if (c == 0) 94 return (TRUE); 95 *addrp = target = mem_alloc(nodesize); 96 if (target == NULL) { 97 //warnx("xdr_array: out of memory"); 98 return (FALSE); 99 } 100 memset(target, 0, nodesize); 101 break; 102 103 case XDR_FREE: 104 return (TRUE); 105 106 case XDR_ENCODE: 107 break; 108 } 109 110 /* 111 * now we xdr each element of array 112 */ 113 for (i = 0; (i < c) && stat; i++) { 114 stat = (*elproc)(xdrs, target); 115 target += elsize; 116 } 117 118 /* 119 * the array may need freeing 120 */ 121 if (xdrs->x_op == XDR_FREE) { 122 mem_free(*addrp, nodesize); 123 *addrp = NULL; 124 } 125 return (stat); 126 } 127 128 /* 129 * xdr_vector(): 130 * 131 * XDR a fixed length array. Unlike variable-length arrays, 132 * the storage of fixed length arrays is static and unfreeable. 133 * > basep: base of the array 134 * > size: size of the array 135 * > elemsize: size of each element 136 * > xdr_elem: routine to XDR each element 137 */ 138 bool_t 139 xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem) 140 XDR *xdrs; 141 char *basep; 142 u_int nelem; 143 u_int elemsize; 144 xdrproc_t xdr_elem; 145 { 146 u_int i; 147 char *elptr; 148 149 elptr = basep; 150 for (i = 0; i < nelem; i++) { 151 if (!(*xdr_elem)(xdrs, elptr)) { 152 return(FALSE); 153 } 154 elptr += elemsize; 155 } 156 return(TRUE); 157 } 158