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d02b48c6 | 1 | /* crypto/x509/v3_x509.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 | ||
59 | #include <stdio.h> | |
58964a49 | 60 | #include <ctype.h> |
d02b48c6 RE |
61 | #include "stack.h" |
62 | #include "cryptlib.h" | |
58964a49 | 63 | #include "bio.h" |
d02b48c6 RE |
64 | #include "asn1.h" |
65 | #include "objects.h" | |
66 | #include "x509.h" | |
67 | ||
58964a49 RE |
68 | #if 0 |
69 | static int i2a_key_usage(BIO *bp, X509 *x); | |
70 | static int a2i_key_usage(X509 *x, char *str, int len); | |
71 | #endif | |
72 | ||
73 | int X509v3_get_key_usage(X509 *x); | |
74 | int X509v3_set_key_usage(X509 *x,unsigned int use); | |
75 | int i2a_X509v3_key_usage(BIO *bp, unsigned int use); | |
76 | unsigned int a2i_X509v3_key_usage(char *p); | |
77 | ||
d02b48c6 RE |
78 | #define STD_X509_EXT_NUM 9 |
79 | ||
58964a49 RE |
80 | #if 0 |
81 | static X509_OBJECTS std_x509_ext[STD_X509_EXT_NUM]={ | |
82 | {NID_subject_key_identifier, NULL,NULL}, | |
83 | {NID_key_usage, a2i_key_usage,i2a_key_usage}, /**/ | |
84 | {NID_private_key_usage_period, NULL,NULL}, | |
85 | {NID_subject_alt_name, NULL,NULL}, | |
86 | {NID_issuer_alt_name, NULL,NULL}, | |
87 | {NID_basic_constraints, NULL,NULL}, | |
88 | {NID_crl_number, NULL,NULL}, | |
89 | {NID_certificate_policies, NULL,NULL}, | |
90 | {NID_authority_key_identifier, NULL,NULL}, | |
d02b48c6 | 91 | }; |
58964a49 | 92 | #endif |
d02b48c6 RE |
93 | |
94 | int X509v3_add_standard_extensions() | |
95 | { | |
d02b48c6 | 96 | |
58964a49 | 97 | #if 0 |
d02b48c6 RE |
98 | for (i=0; i<STD_X509_EXT_NUM; i++) |
99 | if (!X509v3_add_extension(&(std_x509_ext[i]))) | |
100 | return(0); | |
58964a49 RE |
101 | #endif |
102 | return(1); | |
103 | } | |
104 | ||
105 | int X509v3_get_key_usage(x) | |
106 | X509 *x; | |
107 | { | |
108 | X509_EXTENSION *ext; | |
109 | ASN1_STRING *st; | |
110 | char *p; | |
111 | int i; | |
112 | ||
113 | i=X509_get_ext_by_NID(x,NID_key_usage,-1); | |
114 | if (i < 0) return(X509v3_KU_UNDEF); | |
115 | ext=X509_get_ext(x,i); | |
116 | st=X509v3_unpack_string(NULL,V_ASN1_BIT_STRING, | |
117 | X509_EXTENSION_get_data(X509_get_ext(x,i))); | |
118 | ||
119 | p=(char *)ASN1_STRING_data(st); | |
120 | if (ASN1_STRING_length(st) == 1) | |
121 | i=p[0]; | |
122 | else if (ASN1_STRING_length(st) == 2) | |
123 | i=p[0]|(p[1]<<8); | |
124 | else | |
125 | i=0; | |
126 | return(i); | |
127 | } | |
128 | ||
129 | static struct | |
130 | { | |
131 | char *name; | |
132 | unsigned int value; | |
133 | } key_usage_data[] ={ | |
134 | {"digitalSignature", X509v3_KU_DIGITAL_SIGNATURE}, | |
135 | {"nonRepudiation", X509v3_KU_NON_REPUDIATION}, | |
136 | {"keyEncipherment", X509v3_KU_KEY_ENCIPHERMENT}, | |
137 | {"dataEncipherment", X509v3_KU_DATA_ENCIPHERMENT}, | |
138 | {"keyAgreement", X509v3_KU_KEY_AGREEMENT}, | |
139 | {"keyCertSign", X509v3_KU_KEY_CERT_SIGN}, | |
140 | {"cRLSign", X509v3_KU_CRL_SIGN}, | |
141 | {"encipherOnly", X509v3_KU_ENCIPHER_ONLY}, | |
142 | {"decipherOnly", X509v3_KU_DECIPHER_ONLY}, | |
143 | {NULL,0}, | |
144 | }; | |
145 | ||
146 | #if 0 | |
147 | static int a2i_key_usage(x,str,len) | |
148 | X509 *x; | |
149 | char *str; | |
150 | int len; | |
151 | { | |
152 | return(X509v3_set_key_usage(x,a2i_X509v3_key_usage(str))); | |
153 | } | |
154 | ||
155 | static int i2a_key_usage(bp,x) | |
156 | BIO *bp; | |
157 | X509 *x; | |
158 | { | |
159 | return(i2a_X509v3_key_usage(bp,X509v3_get_key_usage(x))); | |
160 | } | |
161 | #endif | |
162 | ||
163 | int i2a_X509v3_key_usage(bp,use) | |
164 | BIO *bp; | |
165 | unsigned int use; | |
166 | { | |
167 | int i=0,first=1; | |
168 | ||
169 | for (;;) | |
170 | { | |
171 | if (use | key_usage_data[i].value) | |
172 | { | |
173 | BIO_printf(bp,"%s%s",((first)?"":" "), | |
174 | key_usage_data[i].name); | |
175 | first=0; | |
176 | } | |
177 | } | |
d02b48c6 RE |
178 | return(1); |
179 | } | |
58964a49 RE |
180 | |
181 | unsigned int a2i_X509v3_key_usage(p) | |
182 | char *p; | |
183 | { | |
184 | unsigned int ret=0; | |
185 | char *q,*s; | |
186 | int i,n; | |
187 | ||
188 | q=p; | |
189 | for (;;) | |
190 | { | |
191 | while ((*q != '\0') && isalnum(*q)) | |
192 | q++; | |
193 | if (*q == '\0') break; | |
194 | s=q++; | |
195 | while (isalnum(*q)) | |
196 | q++; | |
197 | n=q-s; | |
198 | i=0; | |
199 | for (;;) | |
200 | { | |
201 | if (strncmp(key_usage_data[i].name,s,n) == 0) | |
202 | { | |
203 | ret|=key_usage_data[i].value; | |
204 | break; | |
205 | } | |
206 | i++; | |
207 | if (key_usage_data[i].name == NULL) | |
208 | return(X509v3_KU_UNDEF); | |
209 | } | |
210 | } | |
211 | return(ret); | |
212 | } | |
213 | ||
214 | int X509v3_set_key_usage(x,use) | |
215 | X509 *x; | |
216 | unsigned int use; | |
217 | { | |
218 | ASN1_OCTET_STRING *os; | |
219 | X509_EXTENSION *ext; | |
220 | int i; | |
221 | unsigned char data[4]; | |
222 | ||
223 | i=X509_get_ext_by_NID(x,NID_key_usage,-1); | |
224 | if (i < 0) | |
225 | { | |
226 | i=X509_get_ext_count(x)+1; | |
227 | if ((ext=X509_EXTENSION_new()) == NULL) return(0); | |
228 | if (!X509_add_ext(x,ext,i)) | |
229 | { | |
230 | X509_EXTENSION_free(ext); | |
231 | return(0); | |
232 | } | |
233 | } | |
234 | else | |
235 | ext=X509_get_ext(x,i); | |
236 | ||
237 | /* fill in 'ext' */ | |
238 | os=X509_EXTENSION_get_data(ext); | |
239 | ||
240 | i=0; | |
241 | if (use > 0) | |
242 | { | |
243 | i=1; | |
244 | data[0]=use&0xff; | |
245 | } | |
246 | if (use > 0xff) | |
247 | { | |
248 | i=2; | |
249 | data[1]=(use>>8)&0xff; | |
250 | } | |
251 | return((X509v3_pack_string(&os,V_ASN1_BIT_STRING,data,i) == NULL)?0:1); | |
252 | } | |
253 |