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authorcvs2svn <admin@example.com>2015-03-08 16:48:48 +0000
committercvs2svn <admin@example.com>2015-03-08 16:48:48 +0000
commitda1a9ad3a4a867ba6569c05e6fca66d7f296c553 (patch)
tree44872802e872bdfd60730fa9cf01d9d5751251c1 /src/lib/libcrypto/asn1/tasn_fre.c
parent973703db67a8e73d70e63afa8f2cde19da09144d (diff)
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This commit was manufactured by cvs2git to create tag 'OPENBSD_5_7_BASE'.OPENBSD_5_7_BASE
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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/* $OpenBSD: tasn_fre.c,v 1.14 2015/02/14 15:23:57 miod Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) 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,
66 int combine);
67
68/* Free up an ASN1 structure */
69
70void
71ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it)
72{
73 asn1_item_combine_free(&val, it, 0);
74}
75
76void
77ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
78{
79 asn1_item_combine_free(pval, it, 0);
80}
81
82static void
83asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int combine)
84{
85 const ASN1_TEMPLATE *tt = NULL, *seqtt;
86 const ASN1_EXTERN_FUNCS *ef;
87 const ASN1_AUX *aux = it->funcs;
88 ASN1_aux_cb *asn1_cb = NULL;
89 int i;
90
91 if (pval == NULL || *pval == NULL)
92 return;
93
94 if (aux != NULL && aux->asn1_cb != NULL)
95 asn1_cb = aux->asn1_cb;
96
97 switch (it->itype) {
98 case ASN1_ITYPE_PRIMITIVE:
99 if (it->templates)
100 ASN1_template_free(pval, it->templates);
101 else
102 ASN1_primitive_free(pval, it);
103 break;
104
105 case ASN1_ITYPE_MSTRING:
106 ASN1_primitive_free(pval, it);
107 break;
108
109 case ASN1_ITYPE_CHOICE:
110 if (asn1_cb) {
111 i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
112 if (i == 2)
113 return;
114 }
115 i = asn1_get_choice_selector(pval, it);
116 if ((i >= 0) && (i < it->tcount)) {
117 ASN1_VALUE **pchval;
118 tt = it->templates + i;
119 pchval = asn1_get_field_ptr(pval, tt);
120 ASN1_template_free(pchval, tt);
121 }
122 if (asn1_cb)
123 asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
124 if (!combine) {
125 free(*pval);
126 *pval = NULL;
127 }
128 break;
129
130 case ASN1_ITYPE_EXTERN:
131 ef = it->funcs;
132 if (ef && ef->asn1_ex_free)
133 ef->asn1_ex_free(pval, it);
134 break;
135
136 case ASN1_ITYPE_NDEF_SEQUENCE:
137 case ASN1_ITYPE_SEQUENCE:
138 if (asn1_do_lock(pval, -1, it) > 0)
139 return;
140 if (asn1_cb) {
141 i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL);
142 if (i == 2)
143 return;
144 }
145 asn1_enc_free(pval, it);
146 /* If we free up as normal we will invalidate any
147 * ANY DEFINED BY field and we wont be able to
148 * determine the type of the field it defines. So
149 * free up in reverse order.
150 */
151 tt = it->templates + it->tcount - 1;
152 for (i = 0; i < it->tcount; tt--, i++) {
153 ASN1_VALUE **pseqval;
154 seqtt = asn1_do_adb(pval, tt, 0);
155 if (!seqtt)
156 continue;
157 pseqval = asn1_get_field_ptr(pval, seqtt);
158 ASN1_template_free(pseqval, seqtt);
159 }
160 if (asn1_cb)
161 asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL);
162 if (!combine) {
163 free(*pval);
164 *pval = NULL;
165 }
166 break;
167 }
168}
169
170void
171ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
172{
173 int i;
174 if (tt->flags & ASN1_TFLG_SK_MASK) {
175 STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval;
176 for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) {
177 ASN1_VALUE *vtmp;
178 vtmp = sk_ASN1_VALUE_value(sk, i);
179 asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item),
180 0);
181 }
182 sk_ASN1_VALUE_free(sk);
183 *pval = NULL;
184 } else
185 asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item),
186 tt->flags & ASN1_TFLG_COMBINE);
187}
188
189void
190ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
191{
192 int utype;
193 if (it) {
194 const ASN1_PRIMITIVE_FUNCS *pf;
195 pf = it->funcs;
196 if (pf && pf->prim_free) {
197 pf->prim_free(pval, it);
198 return;
199 }
200 }
201 /* Special case: if 'it' is NULL free contents of ASN1_TYPE */
202 if (!it) {
203 ASN1_TYPE *typ = (ASN1_TYPE *)*pval;
204 utype = typ->type;
205 pval = &typ->value.asn1_value;
206 if (!*pval)
207 return;
208 } else if (it->itype == ASN1_ITYPE_MSTRING) {
209 utype = -1;
210 if (!*pval)
211 return;
212 } else {
213 utype = it->utype;
214 if ((utype != V_ASN1_BOOLEAN) && !*pval)
215 return;
216 }
217
218 switch (utype) {
219 case V_ASN1_OBJECT:
220 ASN1_OBJECT_free((ASN1_OBJECT *)*pval);
221 break;
222
223 case V_ASN1_BOOLEAN:
224 if (it)
225 *(ASN1_BOOLEAN *)pval = it->size;
226 else
227 *(ASN1_BOOLEAN *)pval = -1;
228 return;
229
230 case V_ASN1_NULL:
231 break;
232
233 case V_ASN1_ANY:
234 ASN1_primitive_free(pval, NULL);
235 free(*pval);
236 break;
237
238 default:
239 ASN1_STRING_free((ASN1_STRING *)*pval);
240 break;
241 }
242 *pval = NULL;
243}
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