/*
 * Copyright (C) 2008 Free Software Foundation
 *
 * Author: David Marín Carreño
 *
 * This file is part of GNUTLS.
 *
 * GNUTLS is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * GNUTLS is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNUTLS; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdlib.h>
#include <string.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>

void doit (void)
{
	gnutls_x509_privkey_t pkey;
	gnutls_x509_crq_t crq;

	size_t pkey_key_id_len;
	unsigned char *pkey_key_id = NULL;

	size_t crq_key_id_len;
	unsigned char *crq_key_id = NULL;

	gnutls_pk_algorithm_t algorithm;

	int ret;

	ret = gnutls_global_init ();
	if (ret < 0)
		fail ("gnutls_global_init: %d\n", ret);
	

	for (algorithm = GNUTLS_PK_RSA; algorithm <= GNUTLS_PK_DSA; algorithm ++) {

		ret = gnutls_x509_crq_init (&crq);
		if (ret < 0)
			fail ("gnutls_x509_crq_init: %d\n", ret);
		
		ret = gnutls_x509_privkey_init (&pkey);
		if (ret < 0) {
			fail ("gnutls_x509_privkey_init: %d\n", ret);
		}
		
		ret = gnutls_x509_privkey_generate (pkey, algorithm, 1024, 0);
		if (ret < 0) {
			fail ("gnutls_x509_privkey_generate (rsa): %d\n", ret);
		} else {
			success ("Key[%s] generation ok: %d\n", gnutls_pk_algorithm_get_name(algorithm), ret);
		}
	
		pkey_key_id_len = 0;
		ret = gnutls_x509_privkey_get_key_id (pkey, 0, pkey_key_id, &pkey_key_id_len);
		if (ret != GNUTLS_E_SHORT_MEMORY_BUFFER) {
			fail ("gnutls_x509_privkey_get_key_id incorrectly returns %d\n", ret);
		}

		pkey_key_id = malloc(sizeof(unsigned char) * pkey_key_id_len);
		ret = gnutls_x509_privkey_get_key_id (pkey, 0, pkey_key_id, &pkey_key_id_len);
		if (ret != GNUTLS_E_SUCCESS) {
			fail ("gnutls_x509_privkey_get_key_id incorrectly returns %d\n", ret);
		}
		
		ret = gnutls_x509_crq_set_version (crq, 1);
		if (ret < 0){
			fail ("gnutls_x509_crq_set_version: %d\n",ret);
		}
	
		ret = gnutls_x509_crq_set_key (crq, pkey);
		if (ret < 0){
			fail ("gnutls_x509_crq_set_key: %d\n",ret);
		}

		ret = gnutls_x509_crq_set_dn_by_oid (crq, GNUTLS_OID_X520_COMMON_NAME,
						     0, "CN-Test", 7);
		if (ret < 0){
			fail ("gnutls_x509_crq_set_dn_by_oid: %d\n",ret);
		}
		
		ret = gnutls_x509_crq_sign(crq, pkey);
		if (ret) {
			fail ("gnutls_x509_crq_sign: %d\n",ret);		
		}
		
		crq_key_id_len = 0;
		ret = gnutls_x509_crq_get_key_id (crq, 0, crq_key_id, &crq_key_id_len);
		if (ret != GNUTLS_E_SHORT_MEMORY_BUFFER) {
			fail ("gnutls_x509_crq_get_key_id incorrectly returns %d\n", ret);
		}

		crq_key_id = malloc(sizeof(unsigned char) * crq_key_id_len);
		ret = gnutls_x509_crq_get_key_id (crq, 0, crq_key_id, &crq_key_id_len);
		if (ret != GNUTLS_E_SUCCESS) {
			fail ("gnutls_x509_crq_get_key_id incorrectly returns %d\n", ret);
		}

		if (crq_key_id_len == pkey_key_id_len) {
			ret = memcmp (crq_key_id, pkey_key_id, crq_key_id_len);
			if (ret == 0) {
				success ("Key ids are identical. OK.\n");
			} else {
				fail ("Key ids differ incorrectly: %d\n", ret);
			}
		} else {
			fail ("Key_id lengths differ incorrectly: %d - %d\n", crq_key_id_len, pkey_key_id_len);
		}


		if (pkey_key_id) {
			free (pkey_key_id);
			pkey_key_id = NULL;
		}
		
		if (crq_key_id) {
			free (crq_key_id);
			crq_key_id = NULL;
		}

		gnutls_x509_crq_deinit (crq);
		gnutls_x509_privkey_deinit (pkey);

	}

  gnutls_global_deinit ();

}