1 /* $OpenBSD: x509_prn.c,v 1.2 2021/11/01 20:53:08 tb Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 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 * licensing@OpenSSL.org.
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 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58 /* X509 v3 extension utilities */
59
60 #include <stdio.h>
61
62 #include <openssl/conf.h>
63 #include <openssl/x509v3.h>
64
65 #include "x509_lcl.h"
66
67 /* Extension printing routines */
68
69 static int unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
70 int indent, int supported);
71
72 /* Print out a name+value stack */
73
74 void
X509V3_EXT_val_prn(BIO * out,STACK_OF (CONF_VALUE)* val,int indent,int ml)75 X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent, int ml)
76 {
77 int i;
78 CONF_VALUE *nval;
79
80 if (!val)
81 return;
82 if (!ml || !sk_CONF_VALUE_num(val)) {
83 BIO_printf(out, "%*s", indent, "");
84 if (!sk_CONF_VALUE_num(val))
85 BIO_puts(out, "<EMPTY>\n");
86 }
87 for (i = 0; i < sk_CONF_VALUE_num(val); i++) {
88 if (ml)
89 BIO_printf(out, "%*s", indent, "");
90 else if (i > 0) 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
105 int
X509V3_EXT_print(BIO * out,X509_EXTENSION * ext,unsigned long flag,int indent)106 X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, 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 = ASN1_item_d2i(NULL, &p, ext->value->length,
120 method->it);
121 else
122 ext_str = method->d2i(NULL, &p, ext->value->length);
123
124 if (!ext_str)
125 return unknown_ext_print(out, ext, flag, indent, 1);
126
127 if (method->i2s) {
128 if (!(value = method->i2s(method, ext_str))) {
129 ok = 0;
130 goto err;
131 }
132 BIO_printf(out, "%*s%s", indent, "", value);
133 } else if (method->i2v) {
134 if (!(nval = method->i2v(method, ext_str, NULL))) {
135 ok = 0;
136 goto err;
137 }
138 X509V3_EXT_val_prn(out, nval, indent,
139 method->ext_flags & X509V3_EXT_MULTILINE);
140 } else if (method->i2r) {
141 if (!method->i2r(method, ext_str, out, indent))
142 ok = 0;
143 } else
144 ok = 0;
145
146 err:
147 sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
148 free(value);
149 if (method->it)
150 ASN1_item_free(ext_str, method->it);
151 else
152 method->ext_free(ext_str);
153 return ok;
154 }
155
156 int
X509V3_extensions_print(BIO * bp,const char * title,const STACK_OF (X509_EXTENSION)* exts,unsigned long flag,int indent)157 X509V3_extensions_print(BIO *bp, const char *title,
158 const STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent)
159 {
160 int i, j;
161
162 if (sk_X509_EXTENSION_num(exts) <= 0)
163 return 1;
164
165 if (title) {
166 BIO_printf(bp, "%*s%s:\n",indent, "", title);
167 indent += 4;
168 }
169
170 for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
171 ASN1_OBJECT *obj;
172 X509_EXTENSION *ex;
173 ex = sk_X509_EXTENSION_value(exts, i);
174 if (indent && BIO_printf(bp, "%*s",indent, "") <= 0)
175 return 0;
176 obj = X509_EXTENSION_get_object(ex);
177 i2a_ASN1_OBJECT(bp, obj);
178 j = X509_EXTENSION_get_critical(ex);
179 if (BIO_printf(bp, ": %s\n",j?"critical":"") <= 0)
180 return 0;
181 if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
182 BIO_printf(bp, "%*s", indent + 4, "");
183 ASN1_STRING_print(bp, ex->value);
184 }
185 if (BIO_write(bp, "\n",1) <= 0)
186 return 0;
187 }
188 return 1;
189 }
190
191 static int
unknown_ext_print(BIO * out,X509_EXTENSION * ext,unsigned long flag,int indent,int supported)192 unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
193 int indent, int supported)
194 {
195 switch (flag & X509V3_EXT_UNKNOWN_MASK) {
196 case X509V3_EXT_DEFAULT:
197 return 0;
198 case X509V3_EXT_ERROR_UNKNOWN:
199 if (supported)
200 BIO_printf(out, "%*s<Parse Error>", indent, "");
201 else
202 BIO_printf(out, "%*s<Not Supported>", indent, "");
203 return 1;
204 case X509V3_EXT_PARSE_UNKNOWN:
205 return ASN1_parse_dump(out,
206 ext->value->data, ext->value->length, indent, -1);
207 case X509V3_EXT_DUMP_UNKNOWN:
208 return BIO_dump_indent(out, (char *)ext->value->data,
209 ext->value->length, indent);
210 default:
211 return 1;
212 }
213 }
214
215
216 int
X509V3_EXT_print_fp(FILE * fp,X509_EXTENSION * ext,int flag,int indent)217 X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
218 {
219 BIO *bio_tmp;
220 int ret;
221
222 if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE)))
223 return 0;
224 ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
225 BIO_free(bio_tmp);
226 return ret;
227 }
228