/*

 * Copyright (C) 2002-2014 Free Software Foundation, Inc.

 *

 * This file is part of LIBTASN1.

 *

 * The LIBTASN1 library 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 library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA

 */

#include <int.h>

#ifdef STDC_HEADERS

#include <stdarg.h>

#endif

#define LIBTASN1_ERROR_ENTRY(name) { #name, name }

struct libtasn1_error_entry

{

  const char *name;

  int number;

};

typedef struct libtasn1_error_entry libtasn1_error_entry;

static const libtasn1_error_entry error_algorithms[] = {

  LIBTASN1_ERROR_ENTRY (ASN1_SUCCESS),

  LIBTASN1_ERROR_ENTRY (ASN1_FILE_NOT_FOUND),

  LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_FOUND),

  LIBTASN1_ERROR_ENTRY (ASN1_IDENTIFIER_NOT_FOUND),

  LIBTASN1_ERROR_ENTRY (ASN1_DER_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_FOUND),

  LIBTASN1_ERROR_ENTRY (ASN1_GENERIC_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_VALUE_NOT_VALID),

  LIBTASN1_ERROR_ENTRY (ASN1_TAG_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_TAG_IMPLICIT),

  LIBTASN1_ERROR_ENTRY (ASN1_ERROR_TYPE_ANY),

  LIBTASN1_ERROR_ENTRY (ASN1_SYNTAX_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_MEM_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_MEM_ALLOC_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_DER_OVERFLOW),

  LIBTASN1_ERROR_ENTRY (ASN1_NAME_TOO_LONG),

  LIBTASN1_ERROR_ENTRY (ASN1_ARRAY_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_ELEMENT_NOT_EMPTY),

  LIBTASN1_ERROR_ENTRY (ASN1_TIME_ENCODING_ERROR),

  LIBTASN1_ERROR_ENTRY (ASN1_RECURSION),

  {0, 0}

};

/**

 * asn1_perror:

 * @error: is an error returned by a libtasn1 function.

 *

 * Prints a string to stderr with a description of an error.  This

 * function is like perror().  The only difference is that it accepts

 * an error returned by a libtasn1 function.

 *

 * Since: 1.6

 **/

void

asn1_perror (int error)

{

  const char *str = asn1_strerror (error);

  fprintf (stderr, "LIBTASN1 ERROR: %s\n", str ? str : "(null)");

}

/**

 * asn1_strerror:

 * @error: is an error returned by a libtasn1 function.

 *

 * Returns a string with a description of an error.  This function is

 * similar to strerror.  The only difference is that it accepts an

 * error (number) returned by a libtasn1 function.

 *

 * Returns: Pointer to static zero-terminated string describing error

 *   code.

 *

 * Since: 1.6

 **/

const char *

asn1_strerror (int error)

{

  const libtasn1_error_entry *p;

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

    if (p->number == error)

      return p->name + sizeof ("ASN1_") - 1;

  return NULL;

}