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| 1 /* tasn_fre.c */ | |
| 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 | |
| 65 static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int c
ombine); | |
| 66 | |
| 67 /* Free up an ASN1 structure */ | |
| 68 | |
| 69 void ASN1_item_free(ASN1_VALUE *val, const ASN1_ITEM *it) | |
| 70 { | |
| 71 asn1_item_combine_free(&val, it, 0); | |
| 72 } | |
| 73 | |
| 74 void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it) | |
| 75 { | |
| 76 asn1_item_combine_free(pval, it, 0); | |
| 77 } | |
| 78 | |
| 79 static void asn1_item_combine_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int c
ombine) | |
| 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) | |
| 88 return; | |
| 89 if ((it->itype != ASN1_ITYPE_PRIMITIVE) && !*pval) | |
| 90 return; | |
| 91 if (aux && aux->asn1_cb) | |
| 92 asn1_cb = aux->asn1_cb; | |
| 93 else | |
| 94 asn1_cb = 0; | |
| 95 | |
| 96 switch(it->itype) | |
| 97 { | |
| 98 | |
| 99 case ASN1_ITYPE_PRIMITIVE: | |
| 100 if (it->templates) | |
| 101 ASN1_template_free(pval, it->templates); | |
| 102 else | |
| 103 ASN1_primitive_free(pval, it); | |
| 104 break; | |
| 105 | |
| 106 case ASN1_ITYPE_MSTRING: | |
| 107 ASN1_primitive_free(pval, it); | |
| 108 break; | |
| 109 | |
| 110 case ASN1_ITYPE_CHOICE: | |
| 111 if (asn1_cb) | |
| 112 { | |
| 113 i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL); | |
| 114 if (i == 2) | |
| 115 return; | |
| 116 } | |
| 117 i = asn1_get_choice_selector(pval, it); | |
| 118 if ((i >= 0) && (i < it->tcount)) | |
| 119 { | |
| 120 ASN1_VALUE **pchval; | |
| 121 tt = it->templates + i; | |
| 122 pchval = asn1_get_field_ptr(pval, tt); | |
| 123 ASN1_template_free(pchval, tt); | |
| 124 } | |
| 125 if (asn1_cb) | |
| 126 asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL); | |
| 127 if (!combine) | |
| 128 { | |
| 129 OPENSSL_free(*pval); | |
| 130 *pval = NULL; | |
| 131 } | |
| 132 break; | |
| 133 | |
| 134 case ASN1_ITYPE_COMPAT: | |
| 135 cf = it->funcs; | |
| 136 if (cf && cf->asn1_free) | |
| 137 cf->asn1_free(*pval); | |
| 138 break; | |
| 139 | |
| 140 case ASN1_ITYPE_EXTERN: | |
| 141 ef = it->funcs; | |
| 142 if (ef && ef->asn1_ex_free) | |
| 143 ef->asn1_ex_free(pval, it); | |
| 144 break; | |
| 145 | |
| 146 case ASN1_ITYPE_NDEF_SEQUENCE: | |
| 147 case ASN1_ITYPE_SEQUENCE: | |
| 148 if (asn1_do_lock(pval, -1, it) > 0) | |
| 149 return; | |
| 150 if (asn1_cb) | |
| 151 { | |
| 152 i = asn1_cb(ASN1_OP_FREE_PRE, pval, it, NULL); | |
| 153 if (i == 2) | |
| 154 return; | |
| 155 } | |
| 156 asn1_enc_free(pval, it); | |
| 157 /* If we free up as normal we will invalidate any | |
| 158 * ANY DEFINED BY field and we wont be able to | |
| 159 * determine the type of the field it defines. So | |
| 160 * free up in reverse order. | |
| 161 */ | |
| 162 tt = it->templates + it->tcount - 1; | |
| 163 for (i = 0; i < it->tcount; tt--, i++) | |
| 164 { | |
| 165 ASN1_VALUE **pseqval; | |
| 166 seqtt = asn1_do_adb(pval, tt, 0); | |
| 167 if (!seqtt) | |
| 168 continue; | |
| 169 pseqval = asn1_get_field_ptr(pval, seqtt); | |
| 170 ASN1_template_free(pseqval, seqtt); | |
| 171 } | |
| 172 if (asn1_cb) | |
| 173 asn1_cb(ASN1_OP_FREE_POST, pval, it, NULL); | |
| 174 if (!combine) | |
| 175 { | |
| 176 OPENSSL_free(*pval); | |
| 177 *pval = NULL; | |
| 178 } | |
| 179 break; | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt) | |
| 184 { | |
| 185 int i; | |
| 186 if (tt->flags & ASN1_TFLG_SK_MASK) | |
| 187 { | |
| 188 STACK_OF(ASN1_VALUE) *sk = (STACK_OF(ASN1_VALUE) *)*pval; | |
| 189 for (i = 0; i < sk_ASN1_VALUE_num(sk); i++) | |
| 190 { | |
| 191 ASN1_VALUE *vtmp; | |
| 192 vtmp = sk_ASN1_VALUE_value(sk, i); | |
| 193 asn1_item_combine_free(&vtmp, ASN1_ITEM_ptr(tt->item), | |
| 194 0); | |
| 195 } | |
| 196 sk_ASN1_VALUE_free(sk); | |
| 197 *pval = NULL; | |
| 198 } | |
| 199 else | |
| 200 asn1_item_combine_free(pval, ASN1_ITEM_ptr(tt->item), | |
| 201 tt->flags & ASN1_TFLG_COMBINE); | |
| 202 } | |
| 203 | |
| 204 void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it) | |
| 205 { | |
| 206 int utype; | |
| 207 if (it) | |
| 208 { | |
| 209 const ASN1_PRIMITIVE_FUNCS *pf; | |
| 210 pf = it->funcs; | |
| 211 if (pf && pf->prim_free) | |
| 212 { | |
| 213 pf->prim_free(pval, it); | |
| 214 return; | |
| 215 } | |
| 216 } | |
| 217 /* Special case: if 'it' is NULL free contents of ASN1_TYPE */ | |
| 218 if (!it) | |
| 219 { | |
| 220 ASN1_TYPE *typ = (ASN1_TYPE *)*pval; | |
| 221 utype = typ->type; | |
| 222 pval = &typ->value.asn1_value; | |
| 223 if (!*pval) | |
| 224 return; | |
| 225 } | |
| 226 else if (it->itype == ASN1_ITYPE_MSTRING) | |
| 227 { | |
| 228 utype = -1; | |
| 229 if (!*pval) | |
| 230 return; | |
| 231 } | |
| 232 else | |
| 233 { | |
| 234 utype = it->utype; | |
| 235 if ((utype != V_ASN1_BOOLEAN) && !*pval) | |
| 236 return; | |
| 237 } | |
| 238 | |
| 239 switch(utype) | |
| 240 { | |
| 241 case V_ASN1_OBJECT: | |
| 242 ASN1_OBJECT_free((ASN1_OBJECT *)*pval); | |
| 243 break; | |
| 244 | |
| 245 case V_ASN1_BOOLEAN: | |
| 246 if (it) | |
| 247 *(ASN1_BOOLEAN *)pval = it->size; | |
| 248 else | |
| 249 *(ASN1_BOOLEAN *)pval = -1; | |
| 250 return; | |
| 251 | |
| 252 case V_ASN1_NULL: | |
| 253 break; | |
| 254 | |
| 255 case V_ASN1_ANY: | |
| 256 ASN1_primitive_free(pval, NULL); | |
| 257 OPENSSL_free(*pval); | |
| 258 break; | |
| 259 | |
| 260 default: | |
| 261 ASN1_STRING_free((ASN1_STRING *)*pval); | |
| 262 *pval = NULL; | |
| 263 break; | |
| 264 } | |
| 265 *pval = NULL; | |
| 266 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master