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diff --git a/src/lib/libcrypto/asn1/tasn_fre.c b/src/lib/libcrypto/asn1/tasn_fre.c
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1/* tasn_fre.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59
60#include <stddef.h>
61#include <openssl/asn1.h>
62#include <openssl/asn1t.h>
63#include <openssl/objects.h>
64
65static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine);
66
67/* Free up an ASN1 structure */
68
69void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
70{
71 asn1_item_combine_free(&val, it, 0);
72}
73
74void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
75{
76 asn1_item_combine_free(pval, it, 0);
77}
78
79static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
80{
81 const ASN1_TEMPLATE *tt = NULL, *seqtt;
82 const ASN1_EXTERN_FUNCS *ef;
83 const ASN1_COMPAT_FUNCS *cf;
84 const ASN1_AUX *aux = it->funcs;
85 ASN1_aux_cb *asn1_cb;
86 int i;
87 if(!pval) return;
88 if((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval) return;
89 if(aux && aux->asn1_cb) asn1_cb = aux->asn1_cb;
90 else asn1_cb = 0;
91
92 switch(it->itype) {
93
94 case ASN1_ITYPE_PRIMITIVE:
95 if(it->templates) ASN1_template_free(pval, it->templates);
96 else ASN1_primitive_free(pval, it);
97 break;
98
99 case ASN1_ITYPE_MSTRING:
100 ASN1_primitive_free(pval, it);
101 break;
102
103 case ASN1_ITYPE_CHOICE:
104 if(asn1_cb) {
105 i = asn1_cb(ASN1_OP_FREE_PRE, pval, it);
106 if(i == 2) return;
107 }
108 i = asn1_get_choice_selector(pval, it);
109 if(asn1_cb) asn1_cb(ASN1_OP_FREE_PRE, pval, it);
110 if((i >= 0) && (i < it->tcount)) {
111 ASN1_VALUE **pchval;
112 tt = it->templates + i;
113 pchval = asn1_get_field_ptr(pval, tt);
114 ASN1_template_free(pchval, tt);
115 }
116 if(asn1_cb) asn1_cb(ASN1_OP_FREE_POST, pval, it);
117 if(!combine) {
118 OPENSSL_free(*pval);
119 *pval = NULL;
120 }
121 break;
122
123 case ASN1_ITYPE_COMPAT:
124 cf = it->funcs;
125 if(cf && cf->asn1_free) cf->asn1_free(*pval);
126 break;
127
128 case ASN1_ITYPE_EXTERN:
129 ef = it->funcs;
130 if(ef && ef->asn1_ex_free) ef->asn1_ex_free(pval, it);
131 break;
132
133 case ASN1_ITYPE_SEQUENCE:
134 if(asn1_do_lock(pval, -1, it) > 0) return;
135 if(asn1_cb) {
136 i = asn1_cb(ASN1_OP_FREE_PRE, pval, it);
137 if(i == 2) return;
138 }
139 asn1_enc_free(pval, it);
140 /* If we free up as normal we will invalidate any
141 * ANY DEFINED BY field and we wont be able to
142 * determine the type of the field it defines. So
143 * free up in reverse order.
144 */
145 tt = it->templates + it->tcount - 1;
146 for(i = 0; i < it->tcount; tt--, i++) {
147 ASN1_VALUE **pseqval;
148 seqtt = asn1_do_adb(pval, tt, 0);
149 if(!seqtt) continue;
150 pseqval = asn1_get_field_ptr(pval, seqtt);
151 ASN1_template_free(pseqval, seqtt);
152 }
153 if(asn1_cb) asn1_cb(ASN1_OP_FREE_POST, pval, it);
154 if(!combine) {
155 OPENSSL_free(*pval);
156 *pval = NULL;
157 }
158 break;
159 }
160}
161
162void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
163{
164 int i;
165 if(tt->flags & ASN1_TFLG_SK_MASK) {
166 STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
167 for(i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
168 ASN1_VALUE *vtmp;
169 vtmp = sk_ASN1_VALUE_value(sk, i);
170 asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item), 0);
171 }
172 sk_ASN1_VALUE_free(sk);
173 *pval = NULL;
174 } else asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item),
175 tt->flags & ASN1_TFLG_COMBINE);
176}
177
178void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
179{
180 int utype;
181 if(it) {
182 const ASN1_PRIMITIVE_FUNCS *pf;
183 pf = it->funcs;
184 if(pf && pf->prim_free) {
185 pf->prim_free(pval, it);
186 return;
187 }
188 }
189 /* Special case: if 'it' is NULL free contents of ASN1_TYPE */
190 if(!it) {
191 ASN1_TYPE *typ = (ASN1_TYPE *)*pval;
192 utype = typ->type;
193 pval = (ASN1_VALUE **)&typ->value.ptr;
194 if(!*pval) return;
195 } else if(it->itype == ASN1_ITYPE_MSTRING) {
196 utype = -1;
197 if(!*pval) return;
198 } else {
199 utype = it->utype;
200 if((utype != V_ASN1_BOOLEAN) && !*pval) return;
201 }
202
203 switch(utype) {
204 case V_ASN1_OBJECT:
205 ASN1_OBJECT_free((ASN1_OBJECT *)*pval);
206 break;
207
208 case V_ASN1_BOOLEAN:
209 if (it)
210 *(ASN1_BOOLEAN *)pval = it->size;
211 else
212 *(ASN1_BOOLEAN *)pval = -1;
213 return;
214
215 case V_ASN1_NULL:
216 break;
217
218 case V_ASN1_ANY:
219 ASN1_primitive_free(pval, NULL);
220 OPENSSL_free(*pval);
221 break;
222
223 default:
224 ASN1_STRING_free((ASN1_STRING *)*pval);
225 *pval = NULL;
226 break;
227 }
228 *pval = NULL;
229}
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