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      1 /* v3_bcons.c */
      2 /* Written by Dr Stephen N Henson (steve (at) 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 (at) 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 (at) cryptsoft.com).  This product includes software written by Tim
     55  * Hudson (tjh (at) cryptsoft.com). */
     56 
     57 
     58 #include <stdio.h>
     59 #include <string.h>
     60 
     61 #include <openssl/asn1.h>
     62 #include <openssl/asn1t.h>
     63 #include <openssl/conf.h>
     64 #include <openssl/err.h>
     65 #include <openssl/obj.h>
     66 #include <openssl/x509v3.h>
     67 
     68 
     69 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, BASIC_CONSTRAINTS *bcons, STACK_OF(CONF_VALUE) *extlist);
     70 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
     71 
     72 const X509V3_EXT_METHOD v3_bcons = {
     73 NID_basic_constraints, 0,
     74 ASN1_ITEM_ref(BASIC_CONSTRAINTS),
     75 0,0,0,0,
     76 0,0,
     77 (X509V3_EXT_I2V)i2v_BASIC_CONSTRAINTS,
     78 (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS,
     79 NULL,NULL,
     80 NULL
     81 };
     82 
     83 ASN1_SEQUENCE(BASIC_CONSTRAINTS) = {
     84 	ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN),
     85 	ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER)
     86 } ASN1_SEQUENCE_END(BASIC_CONSTRAINTS)
     87 
     88 IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS)
     89 
     90 
     91 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
     92 	     BASIC_CONSTRAINTS *bcons, STACK_OF(CONF_VALUE) *extlist)
     93 {
     94 	X509V3_add_value_bool("CA", bcons->ca, &extlist);
     95 	X509V3_add_value_int("pathlen", bcons->pathlen, &extlist);
     96 	return extlist;
     97 }
     98 
     99 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method,
    100 	     X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values)
    101 {
    102 	BASIC_CONSTRAINTS *bcons=NULL;
    103 	CONF_VALUE *val;
    104 	size_t i;
    105 	if(!(bcons = BASIC_CONSTRAINTS_new())) {
    106 		OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
    107 		return NULL;
    108 	}
    109 	for(i = 0; i < sk_CONF_VALUE_num(values); i++) {
    110 		val = sk_CONF_VALUE_value(values, i);
    111 		if(!strcmp(val->name, "CA")) {
    112 			if(!X509V3_get_value_bool(val, &bcons->ca)) goto err;
    113 		} else if(!strcmp(val->name, "pathlen")) {
    114 			if(!X509V3_get_value_int(val, &bcons->pathlen)) goto err;
    115 		} else {
    116 			OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NAME);
    117 			X509V3_conf_err(val);
    118 			goto err;
    119 		}
    120 	}
    121 	return bcons;
    122 	err:
    123 	BASIC_CONSTRAINTS_free(bcons);
    124 	return NULL;
    125 }
    126 
    127