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1/* crypto/asn1/x_exten.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include "cryptlib.h"
61#include "objects.h"
62#include "asn1_mac.h"
63
64/*
65 * ASN1err(ASN1_F_D2I_X509_EXTENSION,ASN1_R_LENGTH_MISMATCH);
66 * ASN1err(ASN1_F_X509_EXTENSION_NEW,ASN1_R_LENGTH_MISMATCH);
67 */
68
69int i2d_X509_EXTENSION(a,pp)
70X509_EXTENSION *a;
71unsigned char **pp;
72 {
73 int k=0;
74 int r=0,ret=0;
75 unsigned char **p=NULL;
76
77 if (a == NULL) return(0);
78
79 p=NULL;
80 for (;;)
81 {
82 if (k)
83 {
84 r=ASN1_object_size(1,ret,V_ASN1_SEQUENCE);
85 if (pp == NULL) return(r);
86 p=pp;
87 ASN1_put_object(p,1,ret,V_ASN1_SEQUENCE,
88 V_ASN1_UNIVERSAL);
89 }
90
91 ret+=i2d_ASN1_OBJECT(a->object,p);
92 if ((a->critical) || a->netscape_hack)
93 ret+=i2d_ASN1_BOOLEAN(a->critical,p);
94 ret+=i2d_ASN1_OCTET_STRING(a->value,p);
95 if (k++) return(r);
96 }
97 }
98
99X509_EXTENSION *d2i_X509_EXTENSION(a,pp,length)
100X509_EXTENSION **a;
101unsigned char **pp;
102long length;
103 {
104 int i;
105 M_ASN1_D2I_vars(a,X509_EXTENSION *,X509_EXTENSION_new);
106
107 M_ASN1_D2I_Init();
108 M_ASN1_D2I_start_sequence();
109 M_ASN1_D2I_get(ret->object,d2i_ASN1_OBJECT);
110
111 if ((ret->argp != NULL) && (ret->ex_free != NULL))
112 ret->ex_free(ret);
113 ret->argl=0;
114 ret->argp=NULL;
115 ret->netscape_hack=0;
116 if ((c.slen != 0) &&
117 (M_ASN1_next == (V_ASN1_UNIVERSAL|V_ASN1_BOOLEAN)))
118 {
119 c.q=c.p;
120 if (d2i_ASN1_BOOLEAN(&i,&c.p,c.slen) < 0) goto err;
121 ret->critical=i;
122 c.slen-=(c.p-c.q);
123 if (ret->critical == 0) ret->netscape_hack=1;
124 }
125 M_ASN1_D2I_get(ret->value,d2i_ASN1_OCTET_STRING);
126
127 M_ASN1_D2I_Finish(a,X509_EXTENSION_free,ASN1_F_D2I_X509_EXTENSION);
128 }
129
130X509_EXTENSION *X509_EXTENSION_new()
131 {
132 X509_EXTENSION *ret=NULL;
133
134 M_ASN1_New_Malloc(ret,X509_EXTENSION);
135 M_ASN1_New(ret->object,ASN1_OBJECT_new);
136 M_ASN1_New(ret->value,ASN1_OCTET_STRING_new);
137 ret->critical=0;
138 ret->netscape_hack=0;
139 ret->argl=0L;
140 ret->argp=NULL;
141 ret->ex_free=NULL;
142 return(ret);
143 M_ASN1_New_Error(ASN1_F_X509_EXTENSION_NEW);
144 }
145
146void X509_EXTENSION_free(a)
147X509_EXTENSION *a;
148 {
149 if (a == NULL) return;
150 if ((a->argp != NULL) && (a->ex_free != NULL))
151 a->ex_free(a);
152 ASN1_OBJECT_free(a->object);
153 ASN1_OCTET_STRING_free(a->value);
154 Free((char *)a);
155 }
156
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