v3_prn.c

Go to the documentation of this file.

/* v3_prn.c */
/* Written by Dr Stephen N Henson ([email protected]) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    [email protected].
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * ([email protected]).  This product includes software written by Tim
 * Hudson ([email protected]).
 *
 */
/* X509 v3 extension utilities */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/x509v3.h>

/* Extension printing routines */

static int unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent, int supported);

/* Print out a name+value stack */

void X509V3_EXT_val_prn(BIO *out, STACK_OF(CONF_VALUE) *val, int indent, int ml)
{
    int i;
    CONF_VALUE *nval;
    if(!val) return;
    if(!ml || !sk_CONF_VALUE_num(val)) {
        BIO_printf(out, "%*s", indent, "");
        if(!sk_CONF_VALUE_num(val)) BIO_puts(out, "<EMPTY>\n");
    }
    for(i = 0; i < sk_CONF_VALUE_num(val); i++) {
        if(ml) BIO_printf(out, "%*s", indent, "");
        else if(i > 0) BIO_printf(out, ", ");
        nval = sk_CONF_VALUE_value(val, i);
        if(!nval->name) BIO_puts(out, nval->value);
        else if(!nval->value) BIO_puts(out, nval->name);
#ifndef CHARSET_EBCDIC
        else BIO_printf(out, "%s:%s", nval->name, nval->value);
#else
        else {
            int len;
            char *tmp;
            len = strlen(nval->value)+1;
            tmp = OPENSSL_malloc(len);
            if (tmp)
            {
                ascii2ebcdic(tmp, nval->value, len);
                BIO_printf(out, "%s:%s", nval->name, tmp);
                OPENSSL_free(tmp);
            }
        }
#endif
        if(ml) BIO_puts(out, "\n");
    }
}

/* Main routine: print out a general extension */

int X509V3_EXT_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent)
{
    void *ext_str = NULL;
    char *value = NULL;
    const unsigned char *p;
    const X509V3_EXT_METHOD *method;    
    STACK_OF(CONF_VALUE) *nval = NULL;
    int ok = 1;

    if(!(method = X509V3_EXT_get(ext)))
        return unknown_ext_print(out, ext, flag, indent, 0);
    p = ext->value->data;
    if(method->it) ext_str = ASN1_item_d2i(NULL, &p, ext->value->length, ASN1_ITEM_ptr(method->it));
    else ext_str = method->d2i(NULL, &p, ext->value->length);

    if(!ext_str) return unknown_ext_print(out, ext, flag, indent, 1);

    if(method->i2s) {
        if(!(value = method->i2s(method, ext_str))) {
            ok = 0;
            goto err;
        }
#ifndef CHARSET_EBCDIC
        BIO_printf(out, "%*s%s", indent, "", value);
#else
        {
            int len;
            char *tmp;
            len = strlen(value)+1;
            tmp = OPENSSL_malloc(len);
            if (tmp)
            {
                ascii2ebcdic(tmp, value, len);
                BIO_printf(out, "%*s%s", indent, "", tmp);
                OPENSSL_free(tmp);
            }
        }
#endif
    } else if(method->i2v) {
        if(!(nval = method->i2v(method, ext_str, NULL))) {
            ok = 0;
            goto err;
        }
        X509V3_EXT_val_prn(out, nval, indent,
                 method->ext_flags & X509V3_EXT_MULTILINE);
    } else if(method->i2r) {
        if(!method->i2r(method, ext_str, out, indent)) ok = 0;
    } else ok = 0;

    err:
        sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
        if(value) OPENSSL_free(value);
        if(method->it) ASN1_item_free(ext_str, ASN1_ITEM_ptr(method->it));
        else method->ext_free(ext_str);
        return ok;
}

int X509V3_extensions_print(BIO *bp, char *title, STACK_OF(X509_EXTENSION) *exts, unsigned long flag, int indent)
{
    int i, j;

    if(sk_X509_EXTENSION_num(exts) <= 0) return 1;

    if(title) 
        {
        BIO_printf(bp,"%*s%s:\n",indent, "", title);
        indent += 4;
        }

    for (i=0; i<sk_X509_EXTENSION_num(exts); i++)
        {
        ASN1_OBJECT *obj;
        X509_EXTENSION *ex;
        ex=sk_X509_EXTENSION_value(exts, i);
        if (indent && BIO_printf(bp,"%*s",indent, "") <= 0) return 0;
        obj=X509_EXTENSION_get_object(ex);
        i2a_ASN1_OBJECT(bp,obj);
        j=X509_EXTENSION_get_critical(ex);
        if (BIO_printf(bp,": %s\n",j?"critical":"") <= 0)
            return 0;
        if(!X509V3_EXT_print(bp, ex, flag, indent + 4))
            {
            BIO_printf(bp, "%*s", indent + 4, "");
            M_ASN1_OCTET_STRING_print(bp,ex->value);
            }
        if (BIO_write(bp,"\n",1) <= 0) return 0;
        }
    return 1;
}

static int unknown_ext_print(BIO *out, X509_EXTENSION *ext, unsigned long flag, int indent, int supported)
{
    switch(flag & X509V3_EXT_UNKNOWN_MASK) {

        case X509V3_EXT_DEFAULT:
        return 0;

        case X509V3_EXT_ERROR_UNKNOWN:
        if(supported)
            BIO_printf(out, "%*s<Parse Error>", indent, "");
        else
            BIO_printf(out, "%*s<Not Supported>", indent, "");
        return 1;

        case X509V3_EXT_PARSE_UNKNOWN:
            return ASN1_parse_dump(out,
                ext->value->data, ext->value->length, indent, -1);
        case X509V3_EXT_DUMP_UNKNOWN:
            return BIO_dump_indent(out, (char *)ext->value->data, ext->value->length, indent);

        default:
        return 1;
    }
}
    

#ifndef OPENSSL_NO_FP_API
int X509V3_EXT_print_fp(FILE *fp, X509_EXTENSION *ext, int flag, int indent)
{
    BIO *bio_tmp;
    int ret;
    if(!(bio_tmp = BIO_new_fp(fp, BIO_NOCLOSE))) return 0;
    ret = X509V3_EXT_print(bio_tmp, ext, flag, indent);
    BIO_free(bio_tmp);
    return ret;
}
#endif