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/* Copyright (C) 2002 Fabio Fiorina
*
* This file is part of LIBASN1.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <int.h>
#include "errors.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 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 ),
{0}
};
#define LIBTASN1_ERROR_LOOP(b) \
const libtasn1_error_entry *p; \
for(p = error_algorithms; p->name != NULL; p++) { b ; }
#define LIBTASN1_ERROR_ALG_LOOP(a) \
LIBTASN1_ERROR_LOOP( if(p->number == error) { a; break; } )
/**
* libtasn1_perror - prints a string to stderr with a description of an error
* @error: is an error returned by a libasn1 function.
*
* This function is like perror(). The only difference is that it
* accepts an error returned by a libasn1 function.
**/
void libtasn1_perror(asn1_retCode error)
{
const char *ret = NULL;
/* avoid prefix */
LIBTASN1_ERROR_ALG_LOOP(ret =
p->name + sizeof("ASN1_") - 1);
_libtasn1_log( "LIBTASN1 ERROR: %s\n", ret);
}
/**
* libtasn1_strerror - Returns a string with a description of an error
* @error: is an error returned by a libtasn1 function.
*
* This function is similar to strerror(). The only difference is
* that it accepts an error (number) returned by a libasn1 function.
*
* Returns: Pointer to static zero-terminated string describing error
* code.
**/
const char* libtasn1_strerror(asn1_retCode error)
{
const char *ret = NULL;
/* avoid prefix */
LIBTASN1_ERROR_ALG_LOOP(ret =
p->name + sizeof("ASN1_") - 1);
return ret;
}
/* this function will output a message.
*/
#ifdef LIBTASN1_DEBUG
void _libtasn1_log( const char *fmt, ...) {
va_list args;
char str[MAX_LOG_SIZE];
va_start(args,fmt);
vsprintf( str,fmt,args); /* Flawfinder: ignore */
va_end(args);
fprintf(stderr, str);
return;
}
#else /* not DEBUG */
# ifndef C99_MACROS
/* Without C99 macros these functions have to
* be called. This may affect performance.
*/
void _libtasn1_null_log( void* x, ...) { return; }
# endif /* C99_MACROS */
#endif /* DEBUG */
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