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/*
* Copyright (C) 2000 Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* The GNUTLS 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 <gnutls_int.h>
#include "gnutls_errors.h"
#include <libtasn1.h>
#ifdef STDC_HEADERS
# include <stdarg.h>
#endif
extern void (*_gnutls_log_func)( const char*);
#define GNUTLS_ERROR_ENTRY(name, fatal) \
{ #name, name, fatal }
struct gnutls_error_entry {
const char *name;
int number;
int fatal;
};
typedef struct gnutls_error_entry gnutls_error_entry;
static gnutls_error_entry error_algorithms[] = {
GNUTLS_ERROR_ENTRY( GNUTLS_E_SUCCESS, 0),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_CIPHER, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_CIPHER_SUITE, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_CERTIFICATE_KEY_MISMATCH, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_COMPRESSION_ALGORITHM, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_PK_ALGORITHM, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_MAC_ALGORITHM, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_CIPHER_TYPE, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNWANTED_ALGORITHM, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_LARGE_PACKET, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNSUPPORTED_VERSION_PACKET, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_DH_PRIME_UNACCEPTABLE, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNEXPECTED_PACKET_LENGTH, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_INVALID_SESSION, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_INTERNAL_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_RECEIVED_ILLEGAL_EXTENSION, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNABLE_SEND_DATA, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_FATAL_ALERT_RECEIVED ,1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_RECEIVED_BAD_MESSAGE, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_RECEIVED_MORE_DATA, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNEXPECTED_PACKET, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_WARNING_ALERT_RECEIVED, 0),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ERROR_IN_FINISHED_PACKET, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_NO_CERTIFICATE_FOUND, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNEXPECTED_HANDSHAKE_PACKET, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNKNOWN_KX_ALGORITHM, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_MPI_SCAN_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_MPI_PRINT_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_DECRYPTION_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ENCRYPTION_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PK_DECRYPTION_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PK_ENCRYPTION_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PK_SIGNATURE_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_DECOMPRESSION_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_COMPRESSION_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_MEMORY_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNIMPLEMENTED_FEATURE, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_INSUFICIENT_CRED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PWD_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PKCS1_WRONG_PAD, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_EXPIRED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_HASH_FAILED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PARSING_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE, 0),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PULL_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_PUSH_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_RECORD_LIMIT_REACHED, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_X509_CERTIFICATE_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_X509_UNKNOWN_SAN, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_X509_UNSUPPORTED_CRITICAL_EXTENSION, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_X509_KEY_USAGE_VIOLATION, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_AGAIN, 0),
GNUTLS_ERROR_ENTRY( GNUTLS_E_INTERRUPTED, 0),
GNUTLS_ERROR_ENTRY( GNUTLS_E_REHANDSHAKE, 0),
GNUTLS_ERROR_ENTRY( GNUTLS_E_GOT_APPLICATION_DATA, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_DB_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_INVALID_PARAMETERS, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_INVALID_REQUEST, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ILLEGAL_PARAMETER, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_FILE_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASCII_ARMOR_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_ELEMENT_NOT_FOUND, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_IDENTIFIER_NOT_FOUND, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_DER_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_VALUE_NOT_FOUND, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_GENERIC_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_VALUE_NOT_VALID, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_TAG_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_TAG_IMPLICIT, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_TYPE_ANY_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_SYNTAX_ERROR, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_ASN1_DER_OVERFLOW, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_TOO_MANY_EMPTY_PACKETS, 1),
GNUTLS_ERROR_ENTRY( GNUTLS_E_OPENPGP_TRUSTDB_VERSION_UNSUPPORTED, 1),
{0}
};
#define GNUTLS_ERROR_LOOP(b) \
gnutls_error_entry *p; \
for(p = error_algorithms; p->name != NULL; p++) { b ; }
#define GNUTLS_ERROR_ALG_LOOP(a) \
GNUTLS_ERROR_LOOP( if(p->number == error) { a; break; } )
/**
* gnutls_error_is_fatal - Returns non-zero in case of a fatal error
* @error: is an error returned by a gnutls function. Error should be a negative value.
*
* If a function returns a negative value you may feed that value
* to this function to see if it is fatal. Returns 1 for a fatal
* error 0 otherwise. However you may want to check the
* error code manualy, since some non-fatal errors to the protocol
* may be fatal for you (your program).
**/
int gnutls_error_is_fatal(int error)
{
int ret = 0;
GNUTLS_ERROR_ALG_LOOP(ret = p->fatal);
return ret;
}
/**
* gnutls_perror - prints a string to stderr with a description of an error
* @error: is an error returned by a gnutls function. Error is always a negative value.
*
* This function is like perror(). The only difference is that it accepts an
* error returned by a gnutls function.
**/
void gnutls_perror(int error)
{
char *ret = NULL;
/* avoid prefix */
GNUTLS_ERROR_ALG_LOOP(ret =
gnutls_strdup(p->name + sizeof("GNUTLS_E_") - 1));
fprintf(stderr, "GNUTLS ERROR: %s\n", ret);
gnutls_free( ret);
}
/**
* gnutls_strerror - Returns a string with a description of an error
* @error: is an error returned by a gnutls function. Error is always a negative value.
*
* This function is similar to strerror(). The only difference is that it
* accepts an error (number) returned by a gnutls function.
**/
const char* gnutls_strerror(int error)
{
const char *ret = NULL;
/* avoid prefix */
GNUTLS_ERROR_ALG_LOOP(ret =
p->name + sizeof("GNUTLS_E_") - 1);
return ret;
}
int _gnutls_asn2err( int asn_err) {
switch( asn_err) {
case ASN1_FILE_NOT_FOUND:
return GNUTLS_E_FILE_ERROR;
case ASN1_ELEMENT_NOT_FOUND:
return GNUTLS_E_ASN1_ELEMENT_NOT_FOUND;
case ASN1_IDENTIFIER_NOT_FOUND:
return GNUTLS_E_ASN1_IDENTIFIER_NOT_FOUND;
case ASN1_DER_ERROR:
return GNUTLS_E_ASN1_DER_ERROR;
case ASN1_VALUE_NOT_FOUND:
return GNUTLS_E_ASN1_VALUE_NOT_FOUND;
case ASN1_GENERIC_ERROR:
return GNUTLS_E_ASN1_GENERIC_ERROR;
case ASN1_VALUE_NOT_VALID:
return GNUTLS_E_ASN1_VALUE_NOT_VALID;
case ASN1_TAG_ERROR:
return GNUTLS_E_ASN1_TAG_ERROR;
case ASN1_TAG_IMPLICIT:
return GNUTLS_E_ASN1_TAG_IMPLICIT;
case ASN1_ERROR_TYPE_ANY:
return GNUTLS_E_ASN1_TYPE_ANY_ERROR;
case ASN1_SYNTAX_ERROR:
return GNUTLS_E_ASN1_SYNTAX_ERROR;
case ASN1_MEM_ERROR:
return GNUTLS_E_MEMORY_ERROR;
case ASN1_DER_OVERFLOW:
return GNUTLS_E_ASN1_DER_OVERFLOW;
default:
return GNUTLS_E_ASN1_GENERIC_ERROR;
}
}
/* this function will output a message using the
* caller provided function
*/
#ifdef DEBUG
void _gnutls_log( const char *fmt, ...) {
va_list args;
char str[MAX_LOG_SIZE];
void (*log_func)(const char*) = _gnutls_log_func;
if (_gnutls_log_func==NULL) return;
va_start(args,fmt);
vsprintf( str,fmt,args); /* Flawfinder: ignore */
va_end(args);
log_func( str);
return;
}
#else /* not DEBUG */
# ifndef C99_MACROS
/* Without C99 macros these functions have to
* be called. This may affect performance.
*/
void _gnutls_null_log( void* x, ...) { return; }
char* GET_CN( gnutls_datum x) { return NULL; }
const char* _gnutls_handshake2str( int handshake) { return NULL; }
char * _gnutls_bin2hex(const unsigned char *old, const size_t oldlen)
{ return NULL; }
const char* _gnutls_packet2str( int packet) { return NULL; }
# endif /* C99_MACROS */
#endif /* DEBUG */
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