1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
7 *
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14 *
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 *
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.] */
56
57 #include <openssl/asn1.h>
58
59 #include <openssl/err.h>
60 #include <openssl/mem.h>
61
i2d_ASN1_BOOLEAN(int a,unsigned char ** pp)62 int i2d_ASN1_BOOLEAN(int a, unsigned char **pp)
63 {
64 int r;
65 unsigned char *p, *allocated = NULL;
66
67 r = ASN1_object_size(0, 1, V_ASN1_BOOLEAN);
68 if (pp == NULL)
69 return (r);
70
71 if (*pp == NULL) {
72 if ((p = allocated = OPENSSL_malloc(r)) == NULL) {
73 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
74 return 0;
75 }
76 } else {
77 p = *pp;
78 }
79
80 ASN1_put_object(&p, 0, 1, V_ASN1_BOOLEAN, V_ASN1_UNIVERSAL);
81 *p = (unsigned char)a;
82
83 /*
84 * If a new buffer was allocated, just return it back.
85 * If not, return the incremented buffer pointer.
86 */
87 *pp = allocated != NULL ? allocated : p + 1;
88 return r;
89 }
90
d2i_ASN1_BOOLEAN(int * a,const unsigned char ** pp,long length)91 int d2i_ASN1_BOOLEAN(int *a, const unsigned char **pp, long length)
92 {
93 int ret = -1;
94 const unsigned char *p;
95 long len;
96 int inf, tag, xclass;
97 int i = 0;
98
99 p = *pp;
100 inf = ASN1_get_object(&p, &len, &tag, &xclass, length);
101 if (inf & 0x80) {
102 i = ASN1_R_BAD_OBJECT_HEADER;
103 goto err;
104 }
105
106 if (tag != V_ASN1_BOOLEAN) {
107 i = ASN1_R_EXPECTING_A_BOOLEAN;
108 goto err;
109 }
110
111 if (len != 1) {
112 i = ASN1_R_BOOLEAN_IS_WRONG_LENGTH;
113 goto err;
114 }
115 ret = (int)*(p++);
116 if (a != NULL)
117 (*a) = ret;
118 *pp = p;
119 return (ret);
120 err:
121 OPENSSL_PUT_ERROR(ASN1, i);
122 return (ret);
123 }
124