1 /* 2 * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include "internal/cryptlib.h" 12 #include <openssl/evp.h> 13 #include <openssl/asn1t.h> 14 #include <openssl/x509.h> 15 #include "crypto/x509.h" 16 17 /* 18 * X509_CERT_AUX routines. These are used to encode additional user 19 * modifiable data about a certificate. This data is appended to the X509 20 * encoding when the *_X509_AUX routines are used. This means that the 21 * "traditional" X509 routines will simply ignore the extra data. 22 */ 23 24 static X509_CERT_AUX *aux_get(X509 *x); 25 26 ASN1_SEQUENCE(X509_CERT_AUX) = { 27 ASN1_SEQUENCE_OF_OPT(X509_CERT_AUX, trust, ASN1_OBJECT), 28 ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, reject, ASN1_OBJECT, 0), 29 ASN1_OPT(X509_CERT_AUX, alias, ASN1_UTF8STRING), 30 ASN1_OPT(X509_CERT_AUX, keyid, ASN1_OCTET_STRING), 31 ASN1_IMP_SEQUENCE_OF_OPT(X509_CERT_AUX, other, X509_ALGOR, 1) 32 } ASN1_SEQUENCE_END(X509_CERT_AUX) 33 34 IMPLEMENT_ASN1_FUNCTIONS(X509_CERT_AUX) 35 36 int X509_trusted(const X509 *x) 37 { 38 return x->aux ? 1 : 0; 39 } 40 41 static X509_CERT_AUX *aux_get(X509 *x) 42 { 43 if (x == NULL) 44 return NULL; 45 if (x->aux == NULL && (x->aux = X509_CERT_AUX_new()) == NULL) 46 return NULL; 47 return x->aux; 48 } 49 50 int X509_alias_set1(X509 *x, const unsigned char *name, int len) 51 { 52 X509_CERT_AUX *aux; 53 if (!name) { 54 if (!x || !x->aux || !x->aux->alias) 55 return 1; 56 ASN1_UTF8STRING_free(x->aux->alias); 57 x->aux->alias = NULL; 58 return 1; 59 } 60 if ((aux = aux_get(x)) == NULL) 61 return 0; 62 if (aux->alias == NULL && (aux->alias = ASN1_UTF8STRING_new()) == NULL) 63 return 0; 64 return ASN1_STRING_set(aux->alias, name, len); 65 } 66 67 int X509_keyid_set1(X509 *x, const unsigned char *id, int len) 68 { 69 X509_CERT_AUX *aux; 70 if (!id) { 71 if (!x || !x->aux || !x->aux->keyid) 72 return 1; 73 ASN1_OCTET_STRING_free(x->aux->keyid); 74 x->aux->keyid = NULL; 75 return 1; 76 } 77 if ((aux = aux_get(x)) == NULL) 78 return 0; 79 if (aux->keyid == NULL 80 && (aux->keyid = ASN1_OCTET_STRING_new()) == NULL) 81 return 0; 82 return ASN1_STRING_set(aux->keyid, id, len); 83 } 84 85 unsigned char *X509_alias_get0(X509 *x, int *len) 86 { 87 if (!x->aux || !x->aux->alias) 88 return NULL; 89 if (len) 90 *len = x->aux->alias->length; 91 return x->aux->alias->data; 92 } 93 94 unsigned char *X509_keyid_get0(X509 *x, int *len) 95 { 96 if (!x->aux || !x->aux->keyid) 97 return NULL; 98 if (len) 99 *len = x->aux->keyid->length; 100 return x->aux->keyid->data; 101 } 102 103 int X509_add1_trust_object(X509 *x, const ASN1_OBJECT *obj) 104 { 105 X509_CERT_AUX *aux; 106 ASN1_OBJECT *objtmp = NULL; 107 if (obj) { 108 objtmp = OBJ_dup(obj); 109 if (!objtmp) 110 return 0; 111 } 112 if ((aux = aux_get(x)) == NULL) 113 goto err; 114 if (aux->trust == NULL 115 && (aux->trust = sk_ASN1_OBJECT_new_null()) == NULL) 116 goto err; 117 if (!objtmp || sk_ASN1_OBJECT_push(aux->trust, objtmp)) 118 return 1; 119 err: 120 ASN1_OBJECT_free(objtmp); 121 return 0; 122 } 123 124 int X509_add1_reject_object(X509 *x, const ASN1_OBJECT *obj) 125 { 126 X509_CERT_AUX *aux; 127 ASN1_OBJECT *objtmp; 128 int res = 0; 129 130 if ((objtmp = OBJ_dup(obj)) == NULL) 131 return 0; 132 if ((aux = aux_get(x)) == NULL) 133 goto err; 134 if (aux->reject == NULL 135 && (aux->reject = sk_ASN1_OBJECT_new_null()) == NULL) 136 goto err; 137 if (sk_ASN1_OBJECT_push(aux->reject, objtmp) > 0) 138 res = 1; 139 140 err: 141 if (!res) 142 ASN1_OBJECT_free(objtmp); 143 return res; 144 } 145 146 void X509_trust_clear(X509 *x) 147 { 148 if (x->aux) { 149 sk_ASN1_OBJECT_pop_free(x->aux->trust, ASN1_OBJECT_free); 150 x->aux->trust = NULL; 151 } 152 } 153 154 void X509_reject_clear(X509 *x) 155 { 156 if (x->aux) { 157 sk_ASN1_OBJECT_pop_free(x->aux->reject, ASN1_OBJECT_free); 158 x->aux->reject = NULL; 159 } 160 } 161 162 STACK_OF(ASN1_OBJECT) *X509_get0_trust_objects(X509 *x) 163 { 164 if (x->aux != NULL) 165 return x->aux->trust; 166 return NULL; 167 } 168 169 STACK_OF(ASN1_OBJECT) *X509_get0_reject_objects(X509 *x) 170 { 171 if (x->aux != NULL) 172 return x->aux->reject; 173 return NULL; 174 } 175