1/* v3_prn.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 1999.
5 */
6/* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com). */
57
58/* X509 v3 extension utilities */
59
60#include <stdio.h>
61
62#include <openssl/bio.h>
63#include <openssl/conf.h>
64#include <openssl/mem.h>
65#include <openssl/x509v3.h>
66
67/* Extension printing routines */
68
69static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
70 unsigned long flag, int indent, int supported);
71
72/* Print out a name+value stack */
73
74void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
75 int ml)
76{
77 size_t i;
78 CONF_VALUE *nval;
79 if (!val)
80 return;
81 if (!ml || !sk_CONF_VALUE_num(val)) {
82 BIO_printf(out, "%*s", indent, "");
83 if (!sk_CONF_VALUE_num(val))
84 BIO_puts(out, "<EMPTY>\n");
85 }
86 for (i = 0; i < sk_CONF_VALUE_num(val); i++) {
87 if (ml)
88 BIO_printf(out, "%*s", indent, "");
89 else if (i > 0)
90 BIO_printf(out, ", ");
91 nval = sk_CONF_VALUE_value(val, i);
92 if (!nval->name)
93 BIO_puts(out, nval->value);
94 else if (!nval->value)
95 BIO_puts(out, nval->name);
96 else
97 BIO_printf(out, "%s:%s", nval->name, nval->value);
98 if (ml)
99 BIO_puts(out, "\n");
100 }
101}
102
103/* Main routine: print out a general extension */
104
105int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
106 int indent)
107{
108 void *ext_str = NULL;
109 char *value = NULL;
110 const unsigned char *p;
111 const X509V3_EXT_METHOD *method;
112 STACK_OF(CONF_VALUE) *nval = NULL;
113 int ok = 1;
114
115 if (!(method = X509V3_EXT_get(ext)))
116 return unknown_ext_print(out, ext, flag, indent, 0);
117 p = ext->value->data;
118 if (method->it)
119 ext_str =
120 ASN1_item_d2i(NULL, &p, ext->value->length,
121 ASN1_ITEM_ptr(method->it));
122 else
123 ext_str = method->d2i(NULL, &p, ext->value->length);
124
125 if (!ext_str)
126 return unknown_ext_print(out, ext, flag, indent, 1);
127
128 if (method->i2s) {
129 if (!(value = method->i2s(method, ext_str))) {
130 ok = 0;
131 goto err;
132 }
133 BIO_printf(out, "%*s%s", indent, "", value);
134 } else if (method->i2v) {
135 if (!(nval = method->i2v(method, ext_str, NULL))) {
136 ok = 0;
137 goto err;
138 }
139 X509V3_EXT_val_prn(out, nval, indent,
140 method->ext_flags & X509V3_EXT_MULTILINE);
141 } else if (method->i2r) {
142 if (!method->i2r(method, ext_str, out, indent))
143 ok = 0;
144 } else
145 ok = 0;
146
147 err:
148 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
149 if (value)
150 OPENSSL_free(value);
151 if (method->it)
152 ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
153 else
154 method->ext_free(ext_str);
155 return ok;
156}
157
158int X509V3_extensions_print(BIO *bp, const char *title,
159 STACK_OF(X509_EXTENSION) *exts,
160 unsigned long flag, int indent)
161{
162 size_t i;
163 int j;
164
165 if (sk_X509_EXTENSION_num(exts) <= 0)
166 return 1;
167
168 if (title) {
169 BIO_printf(bp, "%*s%s:\n", indent, "", title);
170 indent += 4;
171 }
172
173 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
174 ASN1_OBJECT *obj;
175 X509_EXTENSION *ex;
176 ex = sk_X509_EXTENSION_value(exts, i);
177 if (indent && BIO_printf(bp, "%*s", indent, "") <= 0)
178 return 0;
179 obj = X509_EXTENSION_get_object(ex);
180 i2a_ASN1_OBJECT(bp, obj);
181 j = X509_EXTENSION_get_critical(ex);
182 if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0)
183 return 0;
184 if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
185 BIO_printf(bp, "%*s", indent + 4, "");
186 M_ASN1_OCTET_STRING_print(bp, ex->value);
187 }
188 if (BIO_write(bp, "\n", 1) <= 0)
189 return 0;
190 }
191 return 1;
192}
193
194static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
195 unsigned long flag, int indent, int supported)
196{
197 switch (flag & X509V3_EXT_UNKNOWN_MASK) {
198
199 case X509V3_EXT_DEFAULT:
200 return 0;
201
202 case X509V3_EXT_ERROR_UNKNOWN:
203 if (supported)
204 BIO_printf(out, "%*s<Parse Error>", indent, "");
205 else
206 BIO_printf(out, "%*s<Not Supported>", indent, "");
207 return 1;
208
209 case X509V3_EXT_PARSE_UNKNOWN:
210 case X509V3_EXT_DUMP_UNKNOWN:
211 return BIO_hexdump(out, ext->value->data, ext->value->length, indent);
212
213 default:
214 return 1;
215 }
216}
217
218#ifndef OPENSSL_NO_FP_API
219int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
220{
221 BIO *bio_tmp;
222 int ret;
223 if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE)))
224 return 0;
225 ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
226 BIO_free(bio_tmp);
227 return ret;
228}
229#endif
230