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1 | /* @(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC */ |
2 | /* | |
3 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for | |
4 | * unrestricted use provided that this legend is included on all tape | |
5 | * media and as a part of the software program in whole or part. Users | |
6 | * may copy or modify Sun RPC without charge, but are not authorized | |
7 | * to license or distribute it to anyone else except as part of a product or | |
8 | * program developed by the user. | |
6d52618b | 9 | * |
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10 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
11 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR | |
12 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. | |
6d52618b | 13 | * |
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14 | * Sun RPC is provided with no support and without any obligation on the |
15 | * part of Sun Microsystems, Inc. to assist in its use, correction, | |
16 | * modification or enhancement. | |
6d52618b | 17 | * |
28f540f4 RM |
18 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
19 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC | |
20 | * OR ANY PART THEREOF. | |
6d52618b | 21 | * |
28f540f4 RM |
22 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
23 | * or profits or other special, indirect and consequential damages, even if | |
24 | * Sun has been advised of the possibility of such damages. | |
6d52618b | 25 | * |
28f540f4 RM |
26 | * Sun Microsystems, Inc. |
27 | * 2550 Garcia Avenue | |
28 | * Mountain View, California 94043 | |
29 | */ | |
30 | #if !defined(lint) && defined(SCCSIDS) | |
31 | static char sccsid[] = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro"; | |
32 | #endif | |
33 | ||
34 | /* | |
6d52618b | 35 | * xdr_array.c, Generic XDR routines implementation. |
28f540f4 RM |
36 | * |
37 | * Copyright (C) 1984, Sun Microsystems, Inc. | |
38 | * | |
39 | * These are the "non-trivial" xdr primitives used to serialize and de-serialize | |
40 | * arrays. See xdr.h for more info on the interface to xdr. | |
41 | */ | |
42 | ||
43 | #include <stdio.h> | |
e7fd8a39 | 44 | #include <string.h> |
28f540f4 RM |
45 | #include <rpc/types.h> |
46 | #include <rpc/xdr.h> | |
51028f34 | 47 | #include <libintl.h> |
12892ded | 48 | #include <limits.h> |
51028f34 UD |
49 | |
50 | #ifdef USE_IN_LIBIO | |
51 | # include <wchar.h> | |
52 | #endif | |
28f540f4 RM |
53 | |
54 | #define LASTUNSIGNED ((u_int)0-1) | |
55 | ||
56 | ||
57 | /* | |
58 | * XDR an array of arbitrary elements | |
59 | * *addrp is a pointer to the array, *sizep is the number of elements. | |
60 | * If addrp is NULL (*sizep * elsize) bytes are allocated. | |
61 | * elsize is the size (in bytes) of each element, and elproc is the | |
62 | * xdr procedure to call to handle each element of the array. | |
63 | */ | |
64 | bool_t | |
e7fd8a39 UD |
65 | xdr_array (xdrs, addrp, sizep, maxsize, elsize, elproc) |
66 | XDR *xdrs; | |
67 | caddr_t *addrp; /* array pointer */ | |
68 | u_int *sizep; /* number of elements */ | |
69 | u_int maxsize; /* max numberof elements */ | |
70 | u_int elsize; /* size in bytes of each element */ | |
71 | xdrproc_t elproc; /* xdr routine to handle each element */ | |
28f540f4 | 72 | { |
e7fd8a39 UD |
73 | u_int i; |
74 | caddr_t target = *addrp; | |
75 | u_int c; /* the actual element count */ | |
76 | bool_t stat = TRUE; | |
28f540f4 | 77 | |
e7fd8a39 | 78 | /* like strings, arrays are really counted arrays */ |
77fe0b9c | 79 | if (!INTUSE(xdr_u_int) (xdrs, sizep)) |
e7fd8a39 UD |
80 | { |
81 | return FALSE; | |
82 | } | |
83 | c = *sizep; | |
12892ded UD |
84 | /* |
85 | * XXX: Let the overflow possibly happen with XDR_FREE because mem_free() | |
86 | * doesn't actually use its second argument anyway. | |
87 | */ | |
88 | if ((c > maxsize || c > UINT_MAX / elsize) && (xdrs->x_op != XDR_FREE)) | |
e7fd8a39 UD |
89 | { |
90 | return FALSE; | |
91 | } | |
28f540f4 | 92 | |
e7fd8a39 UD |
93 | /* |
94 | * if we are deserializing, we may need to allocate an array. | |
95 | * We also save time by checking for a null array if we are freeing. | |
96 | */ | |
97 | if (target == NULL) | |
98 | switch (xdrs->x_op) | |
99 | { | |
100 | case XDR_DECODE: | |
101 | if (c == 0) | |
102 | return TRUE; | |
0ecb606c | 103 | *addrp = target = calloc (c, elsize); |
28f540f4 | 104 | if (target == NULL) |
e7fd8a39 | 105 | { |
0ecb606c | 106 | (void) __fxprintf (NULL, "%s", _("xdr_array: out of memory\n")); |
e7fd8a39 UD |
107 | return FALSE; |
108 | } | |
e7fd8a39 | 109 | break; |
28f540f4 | 110 | |
e7fd8a39 UD |
111 | case XDR_FREE: |
112 | return TRUE; | |
113 | default: | |
114 | break; | |
115 | } | |
6d52618b | 116 | |
e7fd8a39 UD |
117 | /* |
118 | * now we xdr each element of array | |
119 | */ | |
120 | for (i = 0; (i < c) && stat; i++) | |
121 | { | |
122 | stat = (*elproc) (xdrs, target, LASTUNSIGNED); | |
123 | target += elsize; | |
124 | } | |
28f540f4 | 125 | |
e7fd8a39 UD |
126 | /* |
127 | * the array may need freeing | |
128 | */ | |
129 | if (xdrs->x_op == XDR_FREE) | |
130 | { | |
0ecb606c | 131 | mem_free (*addrp, c * elsize); |
e7fd8a39 UD |
132 | *addrp = NULL; |
133 | } | |
134 | return stat; | |
28f540f4 | 135 | } |
77fe0b9c | 136 | INTDEF(xdr_array) |
28f540f4 RM |
137 | |
138 | /* | |
139 | * xdr_vector(): | |
140 | * | |
141 | * XDR a fixed length array. Unlike variable-length arrays, | |
142 | * the storage of fixed length arrays is static and unfreeable. | |
143 | * > basep: base of the array | |
144 | * > size: size of the array | |
145 | * > elemsize: size of each element | |
146 | * > xdr_elem: routine to XDR each element | |
147 | */ | |
148 | bool_t | |
e7fd8a39 UD |
149 | xdr_vector (xdrs, basep, nelem, elemsize, xdr_elem) |
150 | XDR *xdrs; | |
151 | char *basep; | |
152 | u_int nelem; | |
153 | u_int elemsize; | |
154 | xdrproc_t xdr_elem; | |
28f540f4 | 155 | { |
e7fd8a39 UD |
156 | u_int i; |
157 | char *elptr; | |
28f540f4 | 158 | |
e7fd8a39 UD |
159 | elptr = basep; |
160 | for (i = 0; i < nelem; i++) | |
161 | { | |
162 | if (!(*xdr_elem) (xdrs, elptr, LASTUNSIGNED)) | |
163 | { | |
164 | return FALSE; | |
28f540f4 | 165 | } |
e7fd8a39 UD |
166 | elptr += elemsize; |
167 | } | |
168 | return TRUE; | |
28f540f4 | 169 | } |