1 | /* |
2 | * Copyright 1995-2018 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/safestack.h> |
13 | #include <openssl/asn1.h> |
14 | #include <openssl/objects.h> |
15 | #include <openssl/evp.h> |
16 | #include <openssl/x509.h> |
17 | #include <openssl/x509v3.h> |
18 | #include "x509_local.h" |
19 | |
20 | int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x) |
21 | { |
22 | if (x == NULL) |
23 | return 0; |
24 | return sk_X509_EXTENSION_num(x); |
25 | } |
26 | |
27 | int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid, |
28 | int lastpos) |
29 | { |
30 | ASN1_OBJECT *obj; |
31 | |
32 | obj = OBJ_nid2obj(nid); |
33 | if (obj == NULL) |
34 | return -2; |
35 | return X509v3_get_ext_by_OBJ(x, obj, lastpos); |
36 | } |
37 | |
38 | int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk, |
39 | const ASN1_OBJECT *obj, int lastpos) |
40 | { |
41 | int n; |
42 | X509_EXTENSION *ex; |
43 | |
44 | if (sk == NULL) |
45 | return -1; |
46 | lastpos++; |
47 | if (lastpos < 0) |
48 | lastpos = 0; |
49 | n = sk_X509_EXTENSION_num(sk); |
50 | for (; lastpos < n; lastpos++) { |
51 | ex = sk_X509_EXTENSION_value(sk, lastpos); |
52 | if (OBJ_cmp(ex->object, obj) == 0) |
53 | return lastpos; |
54 | } |
55 | return -1; |
56 | } |
57 | |
58 | int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit, |
59 | int lastpos) |
60 | { |
61 | int n; |
62 | X509_EXTENSION *ex; |
63 | |
64 | if (sk == NULL) |
65 | return -1; |
66 | lastpos++; |
67 | if (lastpos < 0) |
68 | lastpos = 0; |
69 | n = sk_X509_EXTENSION_num(sk); |
70 | for (; lastpos < n; lastpos++) { |
71 | ex = sk_X509_EXTENSION_value(sk, lastpos); |
72 | if (((ex->critical > 0) && crit) || ((ex->critical <= 0) && !crit)) |
73 | return lastpos; |
74 | } |
75 | return -1; |
76 | } |
77 | |
78 | X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc) |
79 | { |
80 | if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) |
81 | return NULL; |
82 | else |
83 | return sk_X509_EXTENSION_value(x, loc); |
84 | } |
85 | |
86 | X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc) |
87 | { |
88 | X509_EXTENSION *ret; |
89 | |
90 | if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0) |
91 | return NULL; |
92 | ret = sk_X509_EXTENSION_delete(x, loc); |
93 | return ret; |
94 | } |
95 | |
96 | STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x, |
97 | X509_EXTENSION *ex, int loc) |
98 | { |
99 | X509_EXTENSION *new_ex = NULL; |
100 | int n; |
101 | STACK_OF(X509_EXTENSION) *sk = NULL; |
102 | |
103 | if (x == NULL) { |
104 | X509err(X509_F_X509V3_ADD_EXT, ERR_R_PASSED_NULL_PARAMETER); |
105 | goto err2; |
106 | } |
107 | |
108 | if (*x == NULL) { |
109 | if ((sk = sk_X509_EXTENSION_new_null()) == NULL) |
110 | goto err; |
111 | } else |
112 | sk = *x; |
113 | |
114 | n = sk_X509_EXTENSION_num(sk); |
115 | if (loc > n) |
116 | loc = n; |
117 | else if (loc < 0) |
118 | loc = n; |
119 | |
120 | if ((new_ex = X509_EXTENSION_dup(ex)) == NULL) |
121 | goto err2; |
122 | if (!sk_X509_EXTENSION_insert(sk, new_ex, loc)) |
123 | goto err; |
124 | if (*x == NULL) |
125 | *x = sk; |
126 | return sk; |
127 | err: |
128 | X509err(X509_F_X509V3_ADD_EXT, ERR_R_MALLOC_FAILURE); |
129 | err2: |
130 | X509_EXTENSION_free(new_ex); |
131 | if (x != NULL && *x == NULL) |
132 | sk_X509_EXTENSION_free(sk); |
133 | return NULL; |
134 | } |
135 | |
136 | X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid, |
137 | int crit, |
138 | ASN1_OCTET_STRING *data) |
139 | { |
140 | ASN1_OBJECT *obj; |
141 | X509_EXTENSION *ret; |
142 | |
143 | obj = OBJ_nid2obj(nid); |
144 | if (obj == NULL) { |
145 | X509err(X509_F_X509_EXTENSION_CREATE_BY_NID, X509_R_UNKNOWN_NID); |
146 | return NULL; |
147 | } |
148 | ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data); |
149 | if (ret == NULL) |
150 | ASN1_OBJECT_free(obj); |
151 | return ret; |
152 | } |
153 | |
154 | X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex, |
155 | const ASN1_OBJECT *obj, int crit, |
156 | ASN1_OCTET_STRING *data) |
157 | { |
158 | X509_EXTENSION *ret; |
159 | |
160 | if ((ex == NULL) || (*ex == NULL)) { |
161 | if ((ret = X509_EXTENSION_new()) == NULL) { |
162 | X509err(X509_F_X509_EXTENSION_CREATE_BY_OBJ, |
163 | ERR_R_MALLOC_FAILURE); |
164 | return NULL; |
165 | } |
166 | } else |
167 | ret = *ex; |
168 | |
169 | if (!X509_EXTENSION_set_object(ret, obj)) |
170 | goto err; |
171 | if (!X509_EXTENSION_set_critical(ret, crit)) |
172 | goto err; |
173 | if (!X509_EXTENSION_set_data(ret, data)) |
174 | goto err; |
175 | |
176 | if ((ex != NULL) && (*ex == NULL)) |
177 | *ex = ret; |
178 | return ret; |
179 | err: |
180 | if ((ex == NULL) || (ret != *ex)) |
181 | X509_EXTENSION_free(ret); |
182 | return NULL; |
183 | } |
184 | |
185 | int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj) |
186 | { |
187 | if ((ex == NULL) || (obj == NULL)) |
188 | return 0; |
189 | ASN1_OBJECT_free(ex->object); |
190 | ex->object = OBJ_dup(obj); |
191 | return ex->object != NULL; |
192 | } |
193 | |
194 | int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit) |
195 | { |
196 | if (ex == NULL) |
197 | return 0; |
198 | ex->critical = (crit) ? 0xFF : -1; |
199 | return 1; |
200 | } |
201 | |
202 | int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data) |
203 | { |
204 | int i; |
205 | |
206 | if (ex == NULL) |
207 | return 0; |
208 | i = ASN1_OCTET_STRING_set(&ex->value, data->data, data->length); |
209 | if (!i) |
210 | return 0; |
211 | return 1; |
212 | } |
213 | |
214 | ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex) |
215 | { |
216 | if (ex == NULL) |
217 | return NULL; |
218 | return ex->object; |
219 | } |
220 | |
221 | ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex) |
222 | { |
223 | if (ex == NULL) |
224 | return NULL; |
225 | return &ex->value; |
226 | } |
227 | |
228 | int X509_EXTENSION_get_critical(const X509_EXTENSION *ex) |
229 | { |
230 | if (ex == NULL) |
231 | return 0; |
232 | if (ex->critical > 0) |
233 | return 1; |
234 | return 0; |
235 | } |
236 | |