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| 1 /* v3_lib.c */ | |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
| 3 * project 1999. | |
| 4 */ | |
| 5 /* ==================================================================== | |
| 6 * Copyright (c) 1999 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 /* X509 v3 extension utilities */ | |
| 59 | |
| 60 #include <stdio.h> | |
| 61 #include "cryptlib.h" | |
| 62 #include <openssl/conf.h> | |
| 63 #include <openssl/x509v3.h> | |
| 64 | |
| 65 #include "ext_dat.h" | |
| 66 | |
| 67 static STACK_OF(X509V3_EXT_METHOD) *ext_list = NULL; | |
| 68 | |
| 69 static int ext_cmp(const X509V3_EXT_METHOD * const *a, | |
| 70 const X509V3_EXT_METHOD * const *b); | |
| 71 static void ext_list_free(X509V3_EXT_METHOD *ext); | |
| 72 | |
| 73 int X509V3_EXT_add(X509V3_EXT_METHOD *ext) | |
| 74 { | |
| 75 if(!ext_list && !(ext_list = sk_X509V3_EXT_METHOD_new(ext_cmp))) { | |
| 76 X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE); | |
| 77 return 0; | |
| 78 } | |
| 79 if(!sk_X509V3_EXT_METHOD_push(ext_list, ext)) { | |
| 80 X509V3err(X509V3_F_X509V3_EXT_ADD,ERR_R_MALLOC_FAILURE); | |
| 81 return 0; | |
| 82 } | |
| 83 return 1; | |
| 84 } | |
| 85 | |
| 86 static int ext_cmp(const X509V3_EXT_METHOD * const *a, | |
| 87 const X509V3_EXT_METHOD * const *b) | |
| 88 { | |
| 89 return ((*a)->ext_nid - (*b)->ext_nid); | |
| 90 } | |
| 91 | |
| 92 DECLARE_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *, const X509V3_EXT_METHOD *, | |
| 93 ext); | |
| 94 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const X509V3_EXT_METHOD *, | |
| 95 const X509V3_EXT_METHOD *, ext); | |
| 96 | |
| 97 const X509V3_EXT_METHOD *X509V3_EXT_get_nid(int nid) | |
| 98 { | |
| 99 X509V3_EXT_METHOD tmp; | |
| 100 const X509V3_EXT_METHOD *t = &tmp, * const *ret; | |
| 101 int idx; | |
| 102 if(nid < 0) return NULL; | |
| 103 tmp.ext_nid = nid; | |
| 104 ret = OBJ_bsearch_ext(&t, standard_exts, STANDARD_EXTENSION_COUNT); | |
| 105 if(ret) return *ret; | |
| 106 if(!ext_list) return NULL; | |
| 107 idx = sk_X509V3_EXT_METHOD_find(ext_list, &tmp); | |
| 108 if(idx == -1) return NULL; | |
| 109 return sk_X509V3_EXT_METHOD_value(ext_list, idx); | |
| 110 } | |
| 111 | |
| 112 const X509V3_EXT_METHOD *X509V3_EXT_get(X509_EXTENSION *ext) | |
| 113 { | |
| 114 int nid; | |
| 115 if((nid = OBJ_obj2nid(ext->object)) == NID_undef) return NULL; | |
| 116 return X509V3_EXT_get_nid(nid); | |
| 117 } | |
| 118 | |
| 119 | |
| 120 int X509V3_EXT_add_list(X509V3_EXT_METHOD *extlist) | |
| 121 { | |
| 122 for(;extlist->ext_nid!=-1;extlist++) | |
| 123 if(!X509V3_EXT_add(extlist)) return 0; | |
| 124 return 1; | |
| 125 } | |
| 126 | |
| 127 int X509V3_EXT_add_alias(int nid_to, int nid_from) | |
| 128 { | |
| 129 const X509V3_EXT_METHOD *ext; | |
| 130 X509V3_EXT_METHOD *tmpext; | |
| 131 | |
| 132 if(!(ext = X509V3_EXT_get_nid(nid_from))) { | |
| 133 X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,X509V3_R_EXTENSION_NOT_F
OUND); | |
| 134 return 0; | |
| 135 } | |
| 136 if(!(tmpext = (X509V3_EXT_METHOD *)OPENSSL_malloc(sizeof(X509V3_EXT_METH
OD)))) { | |
| 137 X509V3err(X509V3_F_X509V3_EXT_ADD_ALIAS,ERR_R_MALLOC_FAILURE); | |
| 138 return 0; | |
| 139 } | |
| 140 *tmpext = *ext; | |
| 141 tmpext->ext_nid = nid_to; | |
| 142 tmpext->ext_flags |= X509V3_EXT_DYNAMIC; | |
| 143 return X509V3_EXT_add(tmpext); | |
| 144 } | |
| 145 | |
| 146 void X509V3_EXT_cleanup(void) | |
| 147 { | |
| 148 sk_X509V3_EXT_METHOD_pop_free(ext_list, ext_list_free); | |
| 149 ext_list = NULL; | |
| 150 } | |
| 151 | |
| 152 static void ext_list_free(X509V3_EXT_METHOD *ext) | |
| 153 { | |
| 154 if(ext->ext_flags & X509V3_EXT_DYNAMIC) OPENSSL_free(ext); | |
| 155 } | |
| 156 | |
| 157 /* Legacy function: we don't need to add standard extensions | |
| 158 * any more because they are now kept in ext_dat.h. | |
| 159 */ | |
| 160 | |
| 161 int X509V3_add_standard_extensions(void) | |
| 162 { | |
| 163 return 1; | |
| 164 } | |
| 165 | |
| 166 /* Return an extension internal structure */ | |
| 167 | |
| 168 void *X509V3_EXT_d2i(X509_EXTENSION *ext) | |
| 169 { | |
| 170 const X509V3_EXT_METHOD *method; | |
| 171 const unsigned char *p; | |
| 172 | |
| 173 if(!(method = X509V3_EXT_get(ext))) return NULL; | |
| 174 p = ext->value->data; | |
| 175 if(method->it) return ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_I
TEM_ptr(method->it)); | |
| 176 return method->d2i(NULL, &p, ext->value->length); | |
| 177 } | |
| 178 | |
| 179 /* Get critical flag and decoded version of extension from a NID. | |
| 180 * The "idx" variable returns the last found extension and can | |
| 181 * be used to retrieve multiple extensions of the same NID. | |
| 182 * However multiple extensions with the same NID is usually | |
| 183 * due to a badly encoded certificate so if idx is NULL we | |
| 184 * choke if multiple extensions exist. | |
| 185 * The "crit" variable is set to the critical value. | |
| 186 * The return value is the decoded extension or NULL on | |
| 187 * error. The actual error can have several different causes, | |
| 188 * the value of *crit reflects the cause: | |
| 189 * >= 0, extension found but not decoded (reflects critical value). | |
| 190 * -1 extension not found. | |
| 191 * -2 extension occurs more than once. | |
| 192 */ | |
| 193 | |
| 194 void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx) | |
| 195 { | |
| 196 int lastpos, i; | |
| 197 X509_EXTENSION *ex, *found_ex = NULL; | |
| 198 if(!x) { | |
| 199 if(idx) *idx = -1; | |
| 200 if(crit) *crit = -1; | |
| 201 return NULL; | |
| 202 } | |
| 203 if(idx) lastpos = *idx + 1; | |
| 204 else lastpos = 0; | |
| 205 if(lastpos < 0) lastpos = 0; | |
| 206 for(i = lastpos; i < sk_X509_EXTENSION_num(x); i++) | |
| 207 { | |
| 208 ex = sk_X509_EXTENSION_value(x, i); | |
| 209 if(OBJ_obj2nid(ex->object) == nid) { | |
| 210 if(idx) { | |
| 211 *idx = i; | |
| 212 found_ex = ex; | |
| 213 break; | |
| 214 } else if(found_ex) { | |
| 215 /* Found more than one */ | |
| 216 if(crit) *crit = -2; | |
| 217 return NULL; | |
| 218 } | |
| 219 found_ex = ex; | |
| 220 } | |
| 221 } | |
| 222 if(found_ex) { | |
| 223 /* Found it */ | |
| 224 if(crit) *crit = X509_EXTENSION_get_critical(found_ex); | |
| 225 return X509V3_EXT_d2i(found_ex); | |
| 226 } | |
| 227 | |
| 228 /* Extension not found */ | |
| 229 if(idx) *idx = -1; | |
| 230 if(crit) *crit = -1; | |
| 231 return NULL; | |
| 232 } | |
| 233 | |
| 234 /* This function is a general extension append, replace and delete utility. | |
| 235 * The precise operation is governed by the 'flags' value. The 'crit' and | |
| 236 * 'value' arguments (if relevant) are the extensions internal structure. | |
| 237 */ | |
| 238 | |
| 239 int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) **x, int nid, void *value, | |
| 240 int crit, unsigned long flags) | |
| 241 { | |
| 242 int extidx = -1; | |
| 243 int errcode; | |
| 244 X509_EXTENSION *ext, *extmp; | |
| 245 unsigned long ext_op = flags & X509V3_ADD_OP_MASK; | |
| 246 | |
| 247 /* If appending we don't care if it exists, otherwise | |
| 248 * look for existing extension. | |
| 249 */ | |
| 250 if(ext_op != X509V3_ADD_APPEND) | |
| 251 extidx = X509v3_get_ext_by_NID(*x, nid, -1); | |
| 252 | |
| 253 /* See if extension exists */ | |
| 254 if(extidx >= 0) { | |
| 255 /* If keep existing, nothing to do */ | |
| 256 if(ext_op == X509V3_ADD_KEEP_EXISTING) | |
| 257 return 1; | |
| 258 /* If default then its an error */ | |
| 259 if(ext_op == X509V3_ADD_DEFAULT) { | |
| 260 errcode = X509V3_R_EXTENSION_EXISTS; | |
| 261 goto err; | |
| 262 } | |
| 263 /* If delete, just delete it */ | |
| 264 if(ext_op == X509V3_ADD_DELETE) { | |
| 265 if(!sk_X509_EXTENSION_delete(*x, extidx)) return -1; | |
| 266 return 1; | |
| 267 } | |
| 268 } else { | |
| 269 /* If replace existing or delete, error since | |
| 270 * extension must exist | |
| 271 */ | |
| 272 if((ext_op == X509V3_ADD_REPLACE_EXISTING) || | |
| 273 (ext_op == X509V3_ADD_DELETE)) { | |
| 274 errcode = X509V3_R_EXTENSION_NOT_FOUND; | |
| 275 goto err; | |
| 276 } | |
| 277 } | |
| 278 | |
| 279 /* If we get this far then we have to create an extension: | |
| 280 * could have some flags for alternative encoding schemes... | |
| 281 */ | |
| 282 | |
| 283 ext = X509V3_EXT_i2d(nid, crit, value); | |
| 284 | |
| 285 if(!ext) { | |
| 286 X509V3err(X509V3_F_X509V3_ADD1_I2D, X509V3_R_ERROR_CREATING_EXTE
NSION); | |
| 287 return 0; | |
| 288 } | |
| 289 | |
| 290 /* If extension exists replace it.. */ | |
| 291 if(extidx >= 0) { | |
| 292 extmp = sk_X509_EXTENSION_value(*x, extidx); | |
| 293 X509_EXTENSION_free(extmp); | |
| 294 if(!sk_X509_EXTENSION_set(*x, extidx, ext)) return -1; | |
| 295 return 1; | |
| 296 } | |
| 297 | |
| 298 if(!*x && !(*x = sk_X509_EXTENSION_new_null())) return -1; | |
| 299 if(!sk_X509_EXTENSION_push(*x, ext)) return -1; | |
| 300 | |
| 301 return 1; | |
| 302 | |
| 303 err: | |
| 304 if(!(flags & X509V3_ADD_SILENT)) | |
| 305 X509V3err(X509V3_F_X509V3_ADD1_I2D, errcode); | |
| 306 return 0; | |
| 307 } | |
| 308 | |
| 309 IMPLEMENT_STACK_OF(X509V3_EXT_METHOD) | |
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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