Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 1 | /* crypto/asn1/x_x509.c */ |
| 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This package is an SSL implementation written |
| 6 | * by Eric Young (eay@cryptsoft.com). |
| 7 | * The implementation was written so as to conform with Netscapes SSL. |
| 8 | * |
| 9 | * This library is free for commercial and non-commercial use as long as |
| 10 | * the following conditions are aheared to. The following conditions |
| 11 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 13 | * included with this distribution is covered by the same copyright terms |
| 14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 15 | * |
| 16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 17 | * the code are not to be removed. |
| 18 | * If this package is used in a product, Eric Young should be given attribution |
| 19 | * as the author of the parts of the library used. |
| 20 | * This can be in the form of a textual message at program startup or |
| 21 | * in documentation (online or textual) provided with the package. |
| 22 | * |
| 23 | * Redistribution and use in source and binary forms, with or without |
| 24 | * modification, are permitted provided that the following conditions |
| 25 | * are met: |
| 26 | * 1. Redistributions of source code must retain the copyright |
| 27 | * notice, this list of conditions and the following disclaimer. |
| 28 | * 2. Redistributions in binary form must reproduce the above copyright |
| 29 | * notice, this list of conditions and the following disclaimer in the |
| 30 | * documentation and/or other materials provided with the distribution. |
| 31 | * 3. All advertising materials mentioning features or use of this software |
| 32 | * must display the following acknowledgement: |
| 33 | * "This product includes cryptographic software written by |
| 34 | * Eric Young (eay@cryptsoft.com)" |
| 35 | * The word 'cryptographic' can be left out if the rouines from the library |
| 36 | * being used are not cryptographic related :-). |
| 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 38 | * the apps directory (application code) you must include an acknowledgement: |
| 39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 40 | * |
| 41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 51 | * SUCH DAMAGE. |
| 52 | * |
| 53 | * The licence and distribution terms for any publically available version or |
| 54 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 55 | * copied and put under another distribution licence |
| 56 | * [including the GNU Public Licence.] */ |
| 57 | |
| 58 | #include <stdio.h> |
| 59 | |
| 60 | #include <openssl/asn1t.h> |
| 61 | #include <openssl/evp.h> |
| 62 | #include <openssl/mem.h> |
| 63 | #include <openssl/obj.h> |
| 64 | #include <openssl/thread.h> |
| 65 | #include <openssl/x509.h> |
| 66 | #include <openssl/x509v3.h> |
| 67 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 68 | #include "../internal.h" |
| 69 | |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 70 | static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 71 | |
| 72 | ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 73 | ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0), |
| 74 | ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER), |
| 75 | ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR), |
| 76 | ASN1_SIMPLE(X509_CINF, issuer, X509_NAME), |
| 77 | ASN1_SIMPLE(X509_CINF, validity, X509_VAL), |
| 78 | ASN1_SIMPLE(X509_CINF, subject, X509_NAME), |
| 79 | ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY), |
| 80 | ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1), |
| 81 | ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2), |
| 82 | ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 83 | } ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF) |
| 84 | |
| 85 | IMPLEMENT_ASN1_FUNCTIONS(X509_CINF) |
| 86 | /* X509 top level structure needs a bit of customisation */ |
| 87 | |
| 88 | extern void policy_cache_free(X509_POLICY_CACHE *cache); |
| 89 | |
| 90 | static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 91 | void *exarg) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 92 | { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 93 | X509 *ret = (X509 *)*pval; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 94 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 95 | switch (operation) { |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 96 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 97 | case ASN1_OP_NEW_POST: |
| 98 | ret->valid = 0; |
| 99 | ret->name = NULL; |
| 100 | ret->ex_flags = 0; |
| 101 | ret->ex_pathlen = -1; |
| 102 | ret->skid = NULL; |
| 103 | ret->akid = NULL; |
| 104 | ret->aux = NULL; |
| 105 | ret->crldp = NULL; |
| 106 | CRYPTO_new_ex_data(&ret->ex_data); |
| 107 | break; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 108 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 109 | case ASN1_OP_D2I_POST: |
| 110 | if (ret->name != NULL) |
| 111 | OPENSSL_free(ret->name); |
| 112 | ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0); |
| 113 | break; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 114 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 115 | case ASN1_OP_FREE_POST: |
| 116 | CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data); |
| 117 | X509_CERT_AUX_free(ret->aux); |
| 118 | ASN1_OCTET_STRING_free(ret->skid); |
| 119 | AUTHORITY_KEYID_free(ret->akid); |
| 120 | CRL_DIST_POINTS_free(ret->crldp); |
| 121 | policy_cache_free(ret->policy_cache); |
| 122 | GENERAL_NAMES_free(ret->altname); |
| 123 | NAME_CONSTRAINTS_free(ret->nc); |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 124 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 125 | if (ret->name != NULL) |
| 126 | OPENSSL_free(ret->name); |
| 127 | break; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 128 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 129 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 130 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 131 | return 1; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 132 | |
| 133 | } |
| 134 | |
Adam Langley | f4e4272 | 2015-06-04 17:45:09 -0700 | [diff] [blame] | 135 | ASN1_SEQUENCE_ref(X509, x509_cb) = { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 136 | ASN1_SIMPLE(X509, cert_info, X509_CINF), |
| 137 | ASN1_SIMPLE(X509, sig_alg, X509_ALGOR), |
| 138 | ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING) |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 139 | } ASN1_SEQUENCE_END_ref(X509, X509) |
| 140 | |
| 141 | IMPLEMENT_ASN1_FUNCTIONS(X509) |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 142 | |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 143 | IMPLEMENT_ASN1_DUP_FUNCTION(X509) |
| 144 | |
| 145 | X509 *X509_up_ref(X509 *x) |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 146 | { |
| 147 | CRYPTO_refcount_inc(&x->references); |
| 148 | return x; |
| 149 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 150 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 151 | int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused * unused, |
| 152 | CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) |
| 153 | { |
| 154 | int index; |
| 155 | if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp, |
| 156 | dup_func, free_func)) { |
| 157 | return -1; |
| 158 | } |
| 159 | return index; |
| 160 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 161 | |
| 162 | int X509_set_ex_data(X509 *r, int idx, void *arg) |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 163 | { |
| 164 | return (CRYPTO_set_ex_data(&r->ex_data, idx, arg)); |
| 165 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 166 | |
| 167 | void *X509_get_ex_data(X509 *r, int idx) |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 168 | { |
| 169 | return (CRYPTO_get_ex_data(&r->ex_data, idx)); |
| 170 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 171 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 172 | /* |
| 173 | * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with |
| 174 | * extra info tagged on the end. Since these functions set how a certificate |
| 175 | * is trusted they should only be used when the certificate comes from a |
| 176 | * reliable source such as local storage. |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 177 | */ |
| 178 | |
| 179 | X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length) |
| 180 | { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 181 | const unsigned char *q = *pp; |
| 182 | X509 *ret; |
| 183 | int freeret = 0; |
Adam Langley | e9ada86 | 2015-05-11 17:20:37 -0700 | [diff] [blame] | 184 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 185 | if (!a || *a == NULL) |
| 186 | freeret = 1; |
| 187 | ret = d2i_X509(a, &q, length); |
| 188 | /* If certificate unreadable then forget it */ |
| 189 | if (!ret) |
| 190 | return NULL; |
| 191 | /* update length */ |
| 192 | length -= q - *pp; |
| 193 | /* Parse auxiliary information if there is any. */ |
| 194 | if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length)) |
| 195 | goto err; |
| 196 | *pp = q; |
| 197 | return ret; |
| 198 | err: |
| 199 | if (freeret) { |
| 200 | X509_free(ret); |
| 201 | if (a) |
| 202 | *a = NULL; |
| 203 | } |
| 204 | return NULL; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | int i2d_X509_AUX(X509 *a, unsigned char **pp) |
| 208 | { |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 209 | int length, tmplen; |
| 210 | length = i2d_X509(a, pp); |
| 211 | if (length < 0 || a == NULL) { |
| 212 | return length; |
| 213 | } |
| 214 | |
| 215 | tmplen = i2d_X509_CERT_AUX(a->aux, pp); |
| 216 | if (tmplen < 0) { |
| 217 | return tmplen; |
| 218 | } |
| 219 | length += tmplen; |
| 220 | |
| 221 | return length; |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 225 | const X509 *x) |
| 226 | { |
| 227 | if (psig) |
| 228 | *psig = x->signature; |
| 229 | if (palg) |
| 230 | *palg = x->sig_alg; |
| 231 | } |
Adam Langley | d9e397b | 2015-01-22 14:27:53 -0800 | [diff] [blame] | 232 | |
| 233 | int X509_get_signature_nid(const X509 *x) |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame^] | 234 | { |
| 235 | return OBJ_obj2nid(x->sig_alg->algorithm); |
| 236 | } |