/*

 * Copyright (C) 2012 Free Software Foundation

 *

 * Author: Nikos Mavrogiannopoulos

 *

 * This file is part of libdane.

 *

 * libdane is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public License

 * as published by the Free Software Foundation; either version 2.1 of

 * the License, or (at your option) any later version.

 *

 * This library 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

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>

 *

 */

#include <config.h>

#include <gnutls/dane.h>

/* I18n of error codes. */

#include "gettext.h"

#define _(String) dgettext (PACKAGE, String)

#define N_(String) gettext_noop (String)

#define ERROR_ENTRY(desc, name) \

	{ desc, #name, name}

struct error_entry {

	const char *desc;

	const char *_name;

	int number;

};

typedef struct error_entry error_entry;

static const error_entry error_algorithms[] = {

	ERROR_ENTRY(N_("Success."), DANE_E_SUCCESS),

	ERROR_ENTRY(N_("There was error initializing the DNS query."),

		    DANE_E_INITIALIZATION_ERROR),

	ERROR_ENTRY(N_("There was an error while resolving."),

		    DANE_E_RESOLVING_ERROR),

	ERROR_ENTRY(N_("No DANE data were found."),

		    DANE_E_NO_DANE_DATA),

	ERROR_ENTRY(N_("Unknown DANE data were found."),

		    DANE_E_UNKNOWN_DANE_DATA),

	ERROR_ENTRY(N_("No DNSSEC signature was found."),

		    DANE_E_NO_DNSSEC_SIG),

	ERROR_ENTRY(N_("Received corrupt data."),

		    DANE_E_RECEIVED_CORRUPT_DATA),

	ERROR_ENTRY(N_("The DNSSEC signature is invalid."),

		    DANE_E_INVALID_DNSSEC_SIG),

	ERROR_ENTRY(N_("There was a memory error."),

		    DANE_E_MEMORY_ERROR),

	ERROR_ENTRY(N_("The requested data are not available."),

		    DANE_E_REQUESTED_DATA_NOT_AVAILABLE),

	ERROR_ENTRY(N_("The request is invalid."),

		    DANE_E_INVALID_REQUEST),

	ERROR_ENTRY(N_("There was an error in the certificate."),

		    DANE_E_CERT_ERROR),

	ERROR_ENTRY(N_("There was an error in the public key."),

		    DANE_E_PUBKEY_ERROR),

	ERROR_ENTRY(N_("No certificate was found."),

		    DANE_E_NO_CERT),

	ERROR_ENTRY(N_("Error in file."),

		    DANE_E_FILE_ERROR),

	{NULL, NULL, 0}

};

/**

 * dane_strerror:

 * @error: is a DANE error code, a negative error code

 *

 * This function is similar to strerror.  The difference is that it

 * accepts an error number returned by a gnutls function; In case of

 * an unknown error a descriptive string is sent instead of %NULL.

 *

 * Error codes are always a negative error code.

 *

 * Returns: A string explaining the DANE error message.

 **/

const char *dane_strerror(int error)

{

	const char *ret = NULL;

	const error_entry *p;

	for (p = error_algorithms; p->desc != NULL; p++) {

		if (p->number == error) {

			ret = p->desc;

			break;

		}

	}

	/* avoid prefix */

	if (ret == NULL)

		return _("(unknown error code)");

	return _(ret);

}