/*

 * Copyright (C) 2006-2012 Free Software Foundation, Inc.

 * Copyright (C) 2016 Red Hat, Inc.

 *

 * Author: Simon Josefsson, Nikos Mavrogiannopoulos

 *

 * 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 <gnutls/gnutls.h>

#include <gnutls/x509.h>

#include <stdlib.h>

#include <limits.h>

#include <dirent.h>

#include "utils.h"

/* This program will load certificates from CERT_DIR and try to print

 * them. If CERT_DIR/certname.err is available, it should contain the

 * error code that gnutls_x509_crt_import() should return.

 */

#define CERT_DIR "certs-interesting"

static int getnextcert(DIR **dirp, gnutls_datum_t *der, int *exp_ret)

{

	struct dirent *d;

	char path[256];

	char cert_dir[256];

	const char *src;

	int ret;

	gnutls_datum_t local;

	src = getenv("srcdir");

	if (src == NULL)

		src = ".";

	snprintf(cert_dir, sizeof(cert_dir), "%s/%s", src, CERT_DIR);

	if (*dirp == NULL) {

		*dirp = opendir(cert_dir);

		if (*dirp == NULL)

			return -1;

	}

	do {

		d = readdir(*dirp);

		if (d != NULL

#ifdef _DIRENT_HAVE_D_TYPE

			&& d->d_type == DT_REG

#endif

			) {

			if (strstr(d->d_name, ".der") == 0)

				continue;

			if (strstr(d->d_name, ".err") != 0)

				continue;

			snprintf(path, sizeof(path), "%s/%s", cert_dir, d->d_name);

			success("Loading %s\n", path);

			ret = gnutls_load_file(path, der);

			if (ret < 0) {

				return -1;

			}

			snprintf(path, sizeof(path), "%s/%s.err", cert_dir, d->d_name);

			success("Loading errfile %s\n", path);

			ret = gnutls_load_file(path, &local);

			if (ret < 0) { /* not found assume success */

				*exp_ret = 0;

			} else {

				*exp_ret = atoi((char*)local.data);

				success("expecting error code %d\n", *exp_ret);

				gnutls_free(local.data);

				local.data = NULL;

			}

			return 0;

		}

	} while(d != NULL);

	closedir(*dirp);

	return -1; /* finished */

}

void doit(void)

{

	int ret, exp_ret;

	gnutls_x509_crt_t cert;

	gnutls_datum_t der;

	DIR *dirp = NULL;

	ret = global_init();

	if (ret < 0)

		fail("init %d\n", ret);

	while (getnextcert(&dirp, &der, &exp_ret)==0) {

		ret = gnutls_x509_crt_init(&cert);

		if (ret < 0)

			fail("crt_init %d\n", ret);

		gnutls_x509_crt_set_flags(cert, GNUTLS_X509_CRT_FLAG_IGNORE_SANITY);

		ret = gnutls_x509_crt_import(cert, &der, GNUTLS_X509_FMT_DER);

		if (ret != exp_ret) {

			fail("crt_import %s\n", gnutls_strerror(ret));

		}

		if (ret == 0) {

			/* attempt to fully decode */

			gnutls_datum_t out;

			ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL, &out;;

			if (ret < 0) {

				fail("print: %s\n", gnutls_strerror(ret));

			}

			gnutls_free(out.data);

		}

		gnutls_x509_crt_deinit(cert);

		gnutls_free(der.data);

		der.data = NULL;

		der.size = 0;

		exp_ret = -1;

	}

	gnutls_global_deinit();

}