/* crypto/asn1/x_x509.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.] */

#include <stdio.h>

#include <openssl/asn1t.h>
#include <openssl/evp.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/thread.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>

#include "../internal.h"


static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;

ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
	ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
	ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
	ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
	ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
	ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
	ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
	ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
	ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
	ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
	ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)

IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
/* X509 top level structure needs a bit of customisation */

extern void policy_cache_free(X509_POLICY_CACHE *cache);

static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
								void *exarg)
{
	X509 *ret = (X509 *)*pval;

	switch(operation) {

		case ASN1_OP_NEW_POST:
		ret->valid=0;
		ret->name = NULL;
		ret->ex_flags = 0;
		ret->ex_pathlen = -1;
		ret->skid = NULL;
		ret->akid = NULL;
		ret->aux = NULL;
		ret->crldp = NULL;
		CRYPTO_new_ex_data(&g_ex_data_class, ret, &ret->ex_data);
		break;

		case ASN1_OP_D2I_POST:
		if (ret->name != NULL) OPENSSL_free(ret->name);
		ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0);
		break;

		case ASN1_OP_FREE_POST:
		CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data);
		X509_CERT_AUX_free(ret->aux);
		ASN1_OCTET_STRING_free(ret->skid);
		AUTHORITY_KEYID_free(ret->akid);
		CRL_DIST_POINTS_free(ret->crldp);
		policy_cache_free(ret->policy_cache);
		GENERAL_NAMES_free(ret->altname);
		NAME_CONSTRAINTS_free(ret->nc);

		if (ret->name != NULL) OPENSSL_free(ret->name);
		break;

	}

	return 1;

}

ASN1_SEQUENCE_ref(X509, x509_cb) = {
	ASN1_SIMPLE(X509, cert_info, X509_CINF),
	ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
	ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
} ASN1_SEQUENCE_END_ref(X509, X509)

IMPLEMENT_ASN1_FUNCTIONS(X509)
IMPLEMENT_ASN1_DUP_FUNCTION(X509)

X509 *X509_up_ref(X509 *x)
	{
	CRYPTO_refcount_inc(&x->references);
	return x;
	}

int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
        {
	int index;
	if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
			new_func, dup_func, free_func))
		{
		return -1;
		}
	return index;
        }

int X509_set_ex_data(X509 *r, int idx, void *arg)
	{
	return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
	}

void *X509_get_ex_data(X509 *r, int idx)
	{
	return(CRYPTO_get_ex_data(&r->ex_data,idx));
	}

/* X509_AUX ASN1 routines. X509_AUX is the name given to
 * a certificate with extra info tagged on the end. Since these
 * functions set how a certificate is trusted they should only
 * be used when the certificate comes from a reliable source
 * such as local storage.
 *
 */

X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
{
	const unsigned char *q;
	X509 *ret;
	int freeret = 0;

	/* Save start position */
	q = *pp;

	if (!a || *a == NULL)
		freeret = 1;
	ret = d2i_X509(a, pp, length);
	/* If certificate unreadable then forget it */
	if(!ret) return NULL;
	/* update length */
	length -= *pp - q;
	if(!length) return ret;
	if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err;
	return ret;
	err:
	if (freeret)
		{
		X509_free(ret);
		if (a)
			*a = NULL;
		}
	return NULL;
}

int i2d_X509_AUX(X509 *a, unsigned char **pp)
{
	int length;
	length = i2d_X509(a, pp);
	if(a) length += i2d_X509_CERT_AUX(a->aux, pp);
	return length;
}

void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg,
				const X509 *x)
	{
	if (psig)
		*psig = x->signature;
	if (palg)
		*palg = x->sig_alg;
	}

int X509_get_signature_nid(const X509 *x)
	{
	return OBJ_obj2nid(x->sig_alg->algorithm);
	}
