1 /*
2 * Written by Dr Stephen N Henson ([email protected]) for the OpenSSL project
3 * 1999.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * [email protected].
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * ([email protected]). This product includes software written by Tim
55 * Hudson ([email protected]). */
56
57 // X509 v3 extension utilities
58
59 #include <stdio.h>
60
61 #include <openssl/bio.h>
62 #include <openssl/conf.h>
63 #include <openssl/mem.h>
64 #include <openssl/x509.h>
65
66 // Extension printing routines
67
68 static int unknown_ext_print(BIO *out, const X509_EXTENSION *ext,
69 unsigned long flag, int indent, int supported);
70
71 // Print out a name+value stack
X509V3_EXT_val_prn(BIO * out,const STACK_OF (CONF_VALUE)* val,int indent,int ml)72 static void X509V3_EXT_val_prn(BIO *out, const STACK_OF(CONF_VALUE) *val,
73 int indent, int ml) {
74 if (!val) {
75 return;
76 }
77 if (!ml || !sk_CONF_VALUE_num(val)) {
78 BIO_printf(out, "%*s", indent, "");
79 if (!sk_CONF_VALUE_num(val)) {
80 BIO_puts(out, "<EMPTY>\n");
81 }
82 }
83 for (size_t i = 0; i < sk_CONF_VALUE_num(val); i++) {
84 if (ml) {
85 BIO_printf(out, "%*s", indent, "");
86 } else if (i > 0) {
87 BIO_printf(out, ", ");
88 }
89 const CONF_VALUE *nval = sk_CONF_VALUE_value(val, i);
90 if (!nval->name) {
91 BIO_puts(out, nval->value);
92 } else if (!nval->value) {
93 BIO_puts(out, nval->name);
94 } else {
95 BIO_printf(out, "%s:%s", nval->name, nval->value);
96 }
97 if (ml) {
98 BIO_puts(out, "\n");
99 }
100 }
101 }
102
103 // Main routine: print out a general extension
104
X509V3_EXT_print(BIO * out,const X509_EXTENSION * ext,unsigned long flag,int indent)105 int X509V3_EXT_print(BIO *out, const X509_EXTENSION *ext, unsigned long flag,
106 int indent) {
107 const X509V3_EXT_METHOD *method = X509V3_EXT_get(ext);
108 if (method == NULL) {
109 return unknown_ext_print(out, ext, flag, indent, 0);
110 }
111 const ASN1_STRING *ext_data = X509_EXTENSION_get_data(ext);
112 const unsigned char *p = ASN1_STRING_get0_data(ext_data);
113 void *ext_str = ASN1_item_d2i(NULL, &p, ASN1_STRING_length(ext_data),
114 ASN1_ITEM_ptr(method->it));
115 if (!ext_str) {
116 return unknown_ext_print(out, ext, flag, indent, 1);
117 }
118
119 char *value = NULL;
120 STACK_OF(CONF_VALUE) *nval = NULL;
121 int ok = 0;
122 if (method->i2s) {
123 if (!(value = method->i2s(method, ext_str))) {
124 goto err;
125 }
126 BIO_printf(out, "%*s%s", indent, "", value);
127 } else if (method->i2v) {
128 if (!(nval = method->i2v(method, ext_str, NULL))) {
129 goto err;
130 }
131 X509V3_EXT_val_prn(out, nval, indent,
132 method->ext_flags & X509V3_EXT_MULTILINE);
133 } else if (method->i2r) {
134 if (!method->i2r(method, ext_str, out, indent)) {
135 goto err;
136 }
137 } else {
138 OPENSSL_PUT_ERROR(X509V3, X509V3_R_OPERATION_NOT_DEFINED);
139 goto err;
140 }
141
142 ok = 1;
143
144 err:
145 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
146 OPENSSL_free(value);
147 ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
148 return ok;
149 }
150
X509V3_extensions_print(BIO * bp,const char * title,const STACK_OF (X509_EXTENSION)* exts,unsigned long flag,int indent)151 int X509V3_extensions_print(BIO *bp, const char *title,
152 const STACK_OF(X509_EXTENSION) *exts,
153 unsigned long flag, int indent) {
154 size_t i;
155 int j;
156
157 if (sk_X509_EXTENSION_num(exts) <= 0) {
158 return 1;
159 }
160
161 if (title) {
162 BIO_printf(bp, "%*s%s:\n", indent, "", title);
163 indent += 4;
164 }
165
166 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
167 const X509_EXTENSION *ex = sk_X509_EXTENSION_value(exts, i);
168 if (indent && BIO_printf(bp, "%*s", indent, "") <= 0) {
169 return 0;
170 }
171 const ASN1_OBJECT *obj = X509_EXTENSION_get_object(ex);
172 i2a_ASN1_OBJECT(bp, obj);
173 j = X509_EXTENSION_get_critical(ex);
174 if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0) {
175 return 0;
176 }
177 if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
178 BIO_printf(bp, "%*s", indent + 4, "");
179 ASN1_STRING_print(bp, X509_EXTENSION_get_data(ex));
180 }
181 if (BIO_write(bp, "\n", 1) <= 0) {
182 return 0;
183 }
184 }
185 return 1;
186 }
187
unknown_ext_print(BIO * out,const X509_EXTENSION * ext,unsigned long flag,int indent,int supported)188 static int unknown_ext_print(BIO *out, const X509_EXTENSION *ext,
189 unsigned long flag, int indent, int supported) {
190 switch (flag & X509V3_EXT_UNKNOWN_MASK) {
191 case X509V3_EXT_DEFAULT:
192 return 0;
193
194 case X509V3_EXT_ERROR_UNKNOWN:
195 if (supported) {
196 BIO_printf(out, "%*s<Parse Error>", indent, "");
197 } else {
198 BIO_printf(out, "%*s<Not Supported>", indent, "");
199 }
200 return 1;
201
202 case X509V3_EXT_PARSE_UNKNOWN:
203 case X509V3_EXT_DUMP_UNKNOWN: {
204 const ASN1_STRING *data = X509_EXTENSION_get_data(ext);
205 return BIO_hexdump(out, ASN1_STRING_get0_data(data),
206 ASN1_STRING_length(data), indent);
207 }
208
209 default:
210 return 1;
211 }
212 }
213
X509V3_EXT_print_fp(FILE * fp,const X509_EXTENSION * ext,int flag,int indent)214 int X509V3_EXT_print_fp(FILE *fp, const X509_EXTENSION *ext, int flag,
215 int indent) {
216 BIO *bio_tmp;
217 int ret;
218 if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE))) {
219 return 0;
220 }
221 ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
222 BIO_free(bio_tmp);
223 return ret;
224 }
225