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
aux_get(X509 * x)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
X509_alias_set1(X509 * x,const unsigned char * name,int len)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
X509_keyid_set1(X509 * x,const unsigned char * id,int len)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
X509_alias_get0(X509 * x,int * len)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
X509_keyid_get0(X509 * x,int * len)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
X509_add1_trust_object(X509 * x,const ASN1_OBJECT * obj)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
X509_add1_reject_object(X509 * x,const ASN1_OBJECT * obj)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
X509_trust_clear(X509 * x)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
X509_reject_clear(X509 * x)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
STACK_OF(ASN1_OBJECT)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
STACK_OF(ASN1_OBJECT)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