1 /* $OpenBSD: x_x509a.c,v 1.15 2018/05/01 19:01:27 tb Exp $ */ 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 59 #include <stdio.h> 60 61 #include <openssl/asn1t.h> 62 #include <openssl/evp.h> 63 #include <openssl/x509.h> 64 65 /* X509_CERT_AUX routines. These are used to encode additional 66 * user modifiable data about a certificate. This data is 67 * appended to the X509 encoding when the *_X509_AUX routines 68 * are used. This means that the "traditional" X509 routines 69 * will simply ignore the extra data. 70 */ 71 72 static X509_CERT_AUX *aux_get(X509 *x); 73 74 static const ASN1_TEMPLATE X509_CERT_AUX_seq_tt[] = { 75 { 76 .flags = ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_OPTIONAL, 77 .offset = offsetof(X509_CERT_AUX, trust), 78 .field_name = "trust", 79 .item = &ASN1_OBJECT_it, 80 }, 81 { 82 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SEQUENCE_OF | 83 ASN1_TFLG_OPTIONAL, 84 .tag = 0, 85 .offset = offsetof(X509_CERT_AUX, reject), 86 .field_name = "reject", 87 .item = &ASN1_OBJECT_it, 88 }, 89 { 90 .flags = ASN1_TFLG_OPTIONAL, 91 .offset = offsetof(X509_CERT_AUX, alias), 92 .field_name = "alias", 93 .item = &ASN1_UTF8STRING_it, 94 }, 95 { 96 .flags = ASN1_TFLG_OPTIONAL, 97 .offset = offsetof(X509_CERT_AUX, keyid), 98 .field_name = "keyid", 99 .item = &ASN1_OCTET_STRING_it, 100 }, 101 { 102 .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SEQUENCE_OF | 103 ASN1_TFLG_OPTIONAL, 104 .tag = 1, 105 .offset = offsetof(X509_CERT_AUX, other), 106 .field_name = "other", 107 .item = &X509_ALGOR_it, 108 }, 109 }; 110 111 const ASN1_ITEM X509_CERT_AUX_it = { 112 .itype = ASN1_ITYPE_SEQUENCE, 113 .utype = V_ASN1_SEQUENCE, 114 .templates = X509_CERT_AUX_seq_tt, 115 .tcount = sizeof(X509_CERT_AUX_seq_tt) / sizeof(ASN1_TEMPLATE), 116 .size = sizeof(X509_CERT_AUX), 117 .sname = "X509_CERT_AUX", 118 }; 119 120 121 X509_CERT_AUX * 122 d2i_X509_CERT_AUX(X509_CERT_AUX **a, const unsigned char **in, long len) 123 { 124 return (X509_CERT_AUX *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 125 &X509_CERT_AUX_it); 126 } 127 128 int 129 i2d_X509_CERT_AUX(X509_CERT_AUX *a, unsigned char **out) 130 { 131 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CERT_AUX_it); 132 } 133 134 X509_CERT_AUX * 135 X509_CERT_AUX_new(void) 136 { 137 return (X509_CERT_AUX *)ASN1_item_new(&X509_CERT_AUX_it); 138 } 139 140 void 141 X509_CERT_AUX_free(X509_CERT_AUX *a) 142 { 143 ASN1_item_free((ASN1_VALUE *)a, &X509_CERT_AUX_it); 144 } 145 146 static X509_CERT_AUX * 147 aux_get(X509 *x) 148 { 149 if (!x) 150 return NULL; 151 if (!x->aux && !(x->aux = X509_CERT_AUX_new())) 152 return NULL; 153 return x->aux; 154 } 155 156 int 157 X509_alias_set1(X509 *x, const unsigned char *name, int len) 158 { 159 X509_CERT_AUX *aux; 160 if (!name) { 161 if (!x || !x->aux || !x->aux->alias) 162 return 1; 163 ASN1_UTF8STRING_free(x->aux->alias); 164 x->aux->alias = NULL; 165 return 1; 166 } 167 if (!(aux = aux_get(x))) 168 return 0; 169 if (!aux->alias && !(aux->alias = ASN1_UTF8STRING_new())) 170 return 0; 171 return ASN1_STRING_set(aux->alias, name, len); 172 } 173 174 int 175 X509_keyid_set1(X509 *x, const unsigned char *id, int len) 176 { 177 X509_CERT_AUX *aux; 178 if (!id) { 179 if (!x || !x->aux || !x->aux->keyid) 180 return 1; 181 ASN1_OCTET_STRING_free(x->aux->keyid); 182 x->aux->keyid = NULL; 183 return 1; 184 } 185 if (!(aux = aux_get(x))) 186 return 0; 187 if (!aux->keyid && !(aux->keyid = ASN1_OCTET_STRING_new())) 188 return 0; 189 return ASN1_STRING_set(aux->keyid, id, len); 190 } 191 192 unsigned char * 193 X509_alias_get0(X509 *x, int *len) 194 { 195 if (!x->aux || !x->aux->alias) 196 return NULL; 197 if (len) 198 *len = x->aux->alias->length; 199 return x->aux->alias->data; 200 } 201 202 unsigned char * 203 X509_keyid_get0(X509 *x, int *len) 204 { 205 if (!x->aux || !x->aux->keyid) 206 return NULL; 207 if (len) 208 *len = x->aux->keyid->length; 209 return x->aux->keyid->data; 210 } 211 212 int 213 X509_add1_trust_object(X509 *x, const ASN1_OBJECT *obj) 214 { 215 X509_CERT_AUX *aux; 216 ASN1_OBJECT *objtmp; 217 int rc; 218 219 if (!(objtmp = OBJ_dup(obj))) 220 return 0; 221 if (!(aux = aux_get(x))) 222 goto err; 223 if (!aux->trust && !(aux->trust = sk_ASN1_OBJECT_new_null())) 224 goto err; 225 rc = sk_ASN1_OBJECT_push(aux->trust, objtmp); 226 if (rc != 0) 227 return rc; 228 229 err: 230 ASN1_OBJECT_free(objtmp); 231 return 0; 232 } 233 234 int 235 X509_add1_reject_object(X509 *x, const ASN1_OBJECT *obj) 236 { 237 X509_CERT_AUX *aux; 238 ASN1_OBJECT *objtmp; 239 int rc; 240 241 if (!(objtmp = OBJ_dup(obj))) 242 return 0; 243 if (!(aux = aux_get(x))) 244 goto err; 245 if (!aux->reject && !(aux->reject = sk_ASN1_OBJECT_new_null())) 246 goto err; 247 rc = sk_ASN1_OBJECT_push(aux->reject, objtmp); 248 if (rc != 0) 249 return rc; 250 251 err: 252 ASN1_OBJECT_free(objtmp); 253 return 0; 254 } 255 256 void 257 X509_trust_clear(X509 *x) 258 { 259 if (x->aux && x->aux->trust) { 260 sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free); 261 x->aux->trust = NULL; 262 } 263 } 264 265 void 266 X509_reject_clear(X509 *x) 267 { 268 if (x->aux && x->aux->reject) { 269 sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free); 270 x->aux->reject = NULL; 271 } 272 } 273 274 static const ASN1_TEMPLATE X509_CERT_PAIR_seq_tt[] = { 275 { 276 .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL, 277 .tag = 0, 278 .offset = offsetof(X509_CERT_PAIR, forward), 279 .field_name = "forward", 280 .item = &X509_it, 281 }, 282 { 283 .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL, 284 .tag = 1, 285 .offset = offsetof(X509_CERT_PAIR, reverse), 286 .field_name = "reverse", 287 .item = &X509_it, 288 }, 289 }; 290 291 const ASN1_ITEM X509_CERT_PAIR_it = { 292 .itype = ASN1_ITYPE_SEQUENCE, 293 .utype = V_ASN1_SEQUENCE, 294 .templates = X509_CERT_PAIR_seq_tt, 295 .tcount = sizeof(X509_CERT_PAIR_seq_tt) / sizeof(ASN1_TEMPLATE), 296 .funcs = NULL, 297 .size = sizeof(X509_CERT_PAIR), 298 .sname = "X509_CERT_PAIR", 299 }; 300 301 302 X509_CERT_PAIR * 303 d2i_X509_CERT_PAIR(X509_CERT_PAIR **a, const unsigned char **in, long len) 304 { 305 return (X509_CERT_PAIR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 306 &X509_CERT_PAIR_it); 307 } 308 309 int 310 i2d_X509_CERT_PAIR(X509_CERT_PAIR *a, unsigned char **out) 311 { 312 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_CERT_PAIR_it); 313 } 314 315 X509_CERT_PAIR * 316 X509_CERT_PAIR_new(void) 317 { 318 return (X509_CERT_PAIR *)ASN1_item_new(&X509_CERT_PAIR_it); 319 } 320 321 void 322 X509_CERT_PAIR_free(X509_CERT_PAIR *a) 323 { 324 ASN1_item_free((ASN1_VALUE *)a, &X509_CERT_PAIR_it); 325 } 326