v3_prn.c revision 296465 
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 */
59/* X509 v3 extension utilities */
60
61#include <stdio.h>
62#include "cryptlib.h"
63#include <openssl/conf.h>
64#include <openssl/x509v3.h>
65
66/* Extension printing routines */
67
68static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
69                             unsigned long flag, int indent, int supported);
70
71/* Print out a name+value stack */
72
73void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent,
74                        int ml)
75{
76    int i;
77    CONF_VALUE *nval;
78    if (!val)
79        return;
80    if (!ml || !sk_CONF_VALUE_num(val)) {
81        BIO_printf(out, "%*s", indent, "");
82        if (!sk_CONF_VALUE_num(val))
83            BIO_puts(out, "<EMPTY>\n");
84    }
85    for (i = 0; i < sk_CONF_VALUE_num(val); i++) {
86        if (ml)
87            BIO_printf(out, "%*s", indent, "");
88        else if (i > 0)
89            BIO_printf(out, ", ");
90        nval = sk_CONF_VALUE_value(val, i);
91        if (!nval->name)
92            BIO_puts(out, nval->value);
93        else if (!nval->value)
94            BIO_puts(out, nval->name);
95#ifndef CHARSET_EBCDIC
96        else
97            BIO_printf(out, "%s:%s", nval->name, nval->value);
98#else
99        else {
100            int len;
101            char *tmp;
102            len = strlen(nval->value) + 1;
103            tmp = OPENSSL_malloc(len);
104            if (tmp) {
105                ascii2ebcdic(tmp, nval->value, len);
106                BIO_printf(out, "%s:%s", nval->name, tmp);
107                OPENSSL_free(tmp);
108            }
109        }
110#endif
111        if (ml)
112            BIO_puts(out, "\n");
113    }
114}
115
116/* Main routine: print out a general extension */
117
118int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag,
119                     int indent)
120{
121    void *ext_str = NULL;
122    char *value = NULL;
123    const unsigned char *p;
124    X509V3_EXT_METHOD *method;
125    STACK_OF(CONF_VALUE) *nval = NULL;
126    int ok = 1;
127
128    if (!(method = X509V3_EXT_get(ext)))
129        return unknown_ext_print(out, ext, flag, indent, 0);
130    p = ext->value->data;
131    if (method->it)
132        ext_str =
133            ASN1_item_d2i(NULL, &p, ext->value->length,
134                          ASN1_ITEM_ptr(method->it));
135    else
136        ext_str = method->d2i(NULL, &p, ext->value->length);
137
138    if (!ext_str)
139        return unknown_ext_print(out, ext, flag, indent, 1);
140
141    if (method->i2s) {
142        if (!(value = method->i2s(method, ext_str))) {
143            ok = 0;
144            goto err;
145        }
146#ifndef CHARSET_EBCDIC
147        BIO_printf(out, "%*s%s", indent, "", value);
148#else
149        {
150            int len;
151            char *tmp;
152            len = strlen(value) + 1;
153            tmp = OPENSSL_malloc(len);
154            if (tmp) {
155                ascii2ebcdic(tmp, value, len);
156                BIO_printf(out, "%*s%s", indent, "", tmp);
157                OPENSSL_free(tmp);
158            }
159        }
160#endif
161    } else if (method->i2v) {
162        if (!(nval = method->i2v(method, ext_str, NULL))) {
163            ok = 0;
164            goto err;
165        }
166        X509V3_EXT_val_prn(out, nval, indent,
167                           method->ext_flags & X509V3_EXT_MULTILINE);
168    } else if (method->i2r) {
169        if (!method->i2r(method, ext_str, out, indent))
170            ok = 0;
171    } else
172        ok = 0;
173
174 err:
175    sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
176    if (value)
177        OPENSSL_free(value);
178    if (method->it)
179        ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
180    else
181        method->ext_free(ext_str);
182    return ok;
183}
184
185int X509V3_extensions_print(BIO *bp, char *title,
186                            STACK_OF(X509_EXTENSION) *exts,
187                            unsigned long flag, int indent)
188{
189    int i, j;
190
191    if (sk_X509_EXTENSION_num(exts) <= 0)
192        return 1;
193
194    if (title) {
195        BIO_printf(bp, "%*s%s:\n", indent, "", title);
196        indent += 4;
197    }
198
199    for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
200        ASN1_OBJECT *obj;
201        X509_EXTENSION *ex;
202        ex = sk_X509_EXTENSION_value(exts, i);
203        if (indent && BIO_printf(bp, "%*s", indent, "") <= 0)
204            return 0;
205        obj = X509_EXTENSION_get_object(ex);
206        i2a_ASN1_OBJECT(bp, obj);
207        j = X509_EXTENSION_get_critical(ex);
208        if (BIO_printf(bp, ": %s\n", j ? "critical" : "") <= 0)
209            return 0;
210        if (!X509V3_EXT_print(bp, ex, flag, indent + 4)) {
211            BIO_printf(bp, "%*s", indent + 4, "");
212            M_ASN1_OCTET_STRING_print(bp, ex->value);
213        }
214        if (BIO_write(bp, "\n", 1) <= 0)
215            return 0;
216    }
217    return 1;
218}
219
220static int unknown_ext_print(BIO *out, X509_EXTENSION *ext,
221                             unsigned long flag, int indent, int supported)
222{
223    switch (flag & X509V3_EXT_UNKNOWN_MASK) {
224
225    case X509V3_EXT_DEFAULT:
226        return 0;
227
228    case X509V3_EXT_ERROR_UNKNOWN:
229        if (supported)
230            BIO_printf(out, "%*s<Parse Error>", indent, "");
231        else
232            BIO_printf(out, "%*s<Not Supported>", indent, "");
233        return 1;
234
235    case X509V3_EXT_PARSE_UNKNOWN:
236        return ASN1_parse_dump(out,
237                               ext->value->data, ext->value->length, indent,
238                               -1);
239    case X509V3_EXT_DUMP_UNKNOWN:
240        return BIO_dump_indent(out, (char *)ext->value->data,
241                               ext->value->length, indent);
242
243    default:
244        return 1;
245    }
246}
247
248#ifndef OPENSSL_NO_FP_API
249int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
250{
251    BIO *bio_tmp;
252    int ret;
253    if (!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE)))
254        return 0;
255    ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
256    BIO_free(bio_tmp);
257    return ret;
258}
259#endif
260