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/*
* Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation
*
* Author: Nikos Mavrogiannopoulos
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA
*
*/
#include <gnutls_int.h>
#include "gnutls_errors.h"
#include <libtasn1.h>
#ifdef STDC_HEADERS
# include <stdarg.h>
#endif
/* I18n of error codes. */
#define _(String) (String)
#define N_(String) (String)
extern LOG_FUNC MHD__gnutls_log_func;
#define ERROR_ENTRY(desc, name, fatal) \
{ desc, #name, name, fatal}
struct MHD_gnutls_error_entry
{
const char *desc;
const char *_name;
int number;
int fatal;
};
typedef struct MHD_gnutls_error_entry MHD_gnutls_error_entry;
static const MHD_gnutls_error_entry MHD_gtls_error_algorithms[] = {
/* "Short Description", Error code define, critical (0,1) -- 1 in most cases */
ERROR_ENTRY (N_("Success."), GNUTLS_E_SUCCESS, 0),
ERROR_ENTRY (N_("Could not negotiate a supported cipher suite."),
GNUTLS_E_UNKNOWN_CIPHER_SUITE, 1),
ERROR_ENTRY (N_("The cipher type is unsupported."),
GNUTLS_E_UNKNOWN_CIPHER_TYPE, 1),
ERROR_ENTRY (N_("The certificate and the given key do not match."),
GNUTLS_E_CERTIFICATE_KEY_MISMATCH, 1),
ERROR_ENTRY (N_("Could not negotiate a supported compression method."),
GNUTLS_E_UNKNOWN_COMPRESSION_ALGORITHM, 1),
ERROR_ENTRY (N_("An unknown public key algorithm was encountered."),
GNUTLS_E_UNKNOWN_PK_ALGORITHM, 1),
ERROR_ENTRY (N_("An algorithm that is not enabled was negotiated."),
GNUTLS_E_UNWANTED_ALGORITHM, 1),
ERROR_ENTRY (N_("A large TLS record packet was received."),
GNUTLS_E_LARGE_PACKET, 1),
ERROR_ENTRY (N_("A record packet with illegal version was received."),
GNUTLS_E_UNSUPPORTED_VERSION_PACKET, 1),
ERROR_ENTRY (N_
("The Diffie Hellman prime sent by the server is not acceptable (not long enough)."),
GNUTLS_E_DH_PRIME_UNACCEPTABLE, 1),
ERROR_ENTRY (N_("A TLS packet with unexpected length was received."),
GNUTLS_E_UNEXPECTED_PACKET_LENGTH, 1),
ERROR_ENTRY (N_
("The specified session has been invalidated for some reason."),
GNUTLS_E_INVALID_SESSION, 1),
ERROR_ENTRY (N_("GnuTLS internal error."), GNUTLS_E_INTERNAL_ERROR, 1),
ERROR_ENTRY (N_("An illegal TLS extension was received."),
GNUTLS_E_RECEIVED_ILLEGAL_EXTENSION, 1),
ERROR_ENTRY (N_("A TLS fatal alert has been received."),
GNUTLS_E_FATAL_ALERT_RECEIVED, 1),
ERROR_ENTRY (N_("An unexpected TLS packet was received."),
GNUTLS_E_UNEXPECTED_PACKET, 1),
ERROR_ENTRY (N_("A TLS warning alert has been received."),
GNUTLS_E_WARNING_ALERT_RECEIVED, 0),
ERROR_ENTRY (N_
("An error was encountered at the TLS Finished packet calculation."),
GNUTLS_E_ERROR_IN_FINISHED_PACKET, 1),
ERROR_ENTRY (N_("The peer did not send any certificate."),
GNUTLS_E_NO_CERTIFICATE_FOUND, 1),
ERROR_ENTRY (N_("No temporary RSA parameters were found."),
GNUTLS_E_NO_TEMPORARY_RSA_PARAMS, 1),
ERROR_ENTRY (N_("No temporary DH parameters were found."),
GNUTLS_E_NO_TEMPORARY_DH_PARAMS, 1),
ERROR_ENTRY (N_("An unexpected TLS handshake packet was received."),
GNUTLS_E_UNEXPECTED_HANDSHAKE_PACKET, 1),
ERROR_ENTRY (N_("The scanning of a large integer has failed."),
GNUTLS_E_MPI_SCAN_FAILED, 1),
ERROR_ENTRY (N_("Could not export a large integer."),
GNUTLS_E_MPI_PRINT_FAILED, 1),
ERROR_ENTRY (N_("Decryption has failed."), GNUTLS_E_DECRYPTION_FAILED, 1),
ERROR_ENTRY (N_("Encryption has failed."), GNUTLS_E_ENCRYPTION_FAILED, 1),
ERROR_ENTRY (N_("Public key decryption has failed."),
GNUTLS_E_PK_DECRYPTION_FAILED, 1),
ERROR_ENTRY (N_("Public key encryption has failed."),
GNUTLS_E_PK_ENCRYPTION_FAILED, 1),
ERROR_ENTRY (N_("Public key signing has failed."), GNUTLS_E_PK_SIGN_FAILED,
1),
ERROR_ENTRY (N_("Public key signature verification has failed."),
GNUTLS_E_PK_SIG_VERIFY_FAILED, 1),
ERROR_ENTRY (N_("Decompression of the TLS record packet has failed."),
GNUTLS_E_DECOMPRESSION_FAILED, 1),
ERROR_ENTRY (N_("Compression of the TLS record packet has failed."),
GNUTLS_E_COMPRESSION_FAILED, 1),
ERROR_ENTRY (N_("Internal error in memory allocation."),
GNUTLS_E_MEMORY_ERROR, 1),
ERROR_ENTRY (N_("An unimplemented or disabled feature has been requested."),
GNUTLS_E_UNIMPLEMENTED_FEATURE, 1),
ERROR_ENTRY (N_("Insufficient credentials for that request."),
GNUTLS_E_INSUFFICIENT_CREDENTIALS, 1),
ERROR_ENTRY (N_("Error in password file."), GNUTLS_E_SRP_PWD_ERROR, 1),
ERROR_ENTRY (N_("Wrong padding in PKCS1 packet."), GNUTLS_E_PKCS1_WRONG_PAD,
1),
ERROR_ENTRY (N_("The requested session has expired."), GNUTLS_E_EXPIRED, 1),
ERROR_ENTRY (N_("Hashing has failed."), GNUTLS_E_HASH_FAILED, 1),
ERROR_ENTRY (N_("Base64 decoding error."), GNUTLS_E_BASE64_DECODING_ERROR,
1),
ERROR_ENTRY (N_("Base64 unexpected header error."),
GNUTLS_E_BASE64_UNEXPECTED_HEADER_ERROR,
1),
ERROR_ENTRY (N_("Base64 encoding error."), GNUTLS_E_BASE64_ENCODING_ERROR,
1),
ERROR_ENTRY (N_("Parsing error in password file."),
GNUTLS_E_SRP_PWD_PARSING_ERROR, 1),
ERROR_ENTRY (N_("The requested data were not available."),
GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE, 0),
ERROR_ENTRY (N_("Error in the pull function."), GNUTLS_E_PULL_ERROR, 1),
ERROR_ENTRY (N_("Error in the push function."), GNUTLS_E_PUSH_ERROR, 1),
ERROR_ENTRY (N_
("The upper limit of record packet sequence numbers has been reached. Wow!"),
GNUTLS_E_RECORD_LIMIT_REACHED, 1),
ERROR_ENTRY (N_("Error in the certificate."), GNUTLS_E_CERTIFICATE_ERROR,
1),
ERROR_ENTRY (N_("Unknown Subject Alternative name in X.509 certificate."),
GNUTLS_E_X509_UNKNOWN_SAN, 1),
ERROR_ENTRY (N_("Unsupported critical extension in X.509 certificate."),
GNUTLS_E_X509_UNSUPPORTED_CRITICAL_EXTENSION, 1),
ERROR_ENTRY (N_("Key usage violation in certificate has been detected."),
GNUTLS_E_KEY_USAGE_VIOLATION, 1),
ERROR_ENTRY (N_("Function was interrupted."), GNUTLS_E_AGAIN, 0),
ERROR_ENTRY (N_("Function was interrupted."), GNUTLS_E_INTERRUPTED, 0),
ERROR_ENTRY (N_("Rehandshake was requested by the peer."),
GNUTLS_E_REHANDSHAKE, 0),
ERROR_ENTRY (N_
("TLS Application data were received, while expecting handshake data."),
GNUTLS_E_GOT_APPLICATION_DATA, 1),
ERROR_ENTRY (N_("Error in Database backend."), GNUTLS_E_DB_ERROR, 1),
ERROR_ENTRY (N_("The certificate type is not supported."),
GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE, 1),
ERROR_ENTRY (N_("The given memory buffer is too short to hold parameters."),
GNUTLS_E_SHORT_MEMORY_BUFFER, 1),
ERROR_ENTRY (N_("The request is invalid."), GNUTLS_E_INVALID_REQUEST, 1),
ERROR_ENTRY (N_("An illegal parameter has been received."),
GNUTLS_E_RECEIVED_ILLEGAL_PARAMETER, 1),
ERROR_ENTRY (N_("Error while reading file."), GNUTLS_E_FILE_ERROR, 1),
ERROR_ENTRY (N_("ASN1 parser: Element was not found."),
GNUTLS_E_ASN1_ELEMENT_NOT_FOUND, 1),
ERROR_ENTRY (N_("ASN1 parser: Identifier was not found"),
GNUTLS_E_ASN1_IDENTIFIER_NOT_FOUND, 1),
ERROR_ENTRY (N_("ASN1 parser: Error in DER parsing."),
GNUTLS_E_ASN1_DER_ERROR, 1),
ERROR_ENTRY (N_("ASN1 parser: Value was not found."),
GNUTLS_E_ASN1_VALUE_NOT_FOUND, 1),
ERROR_ENTRY (N_("ASN1 parser: Generic parsing error."),
GNUTLS_E_ASN1_GENERIC_ERROR, 1),
ERROR_ENTRY (N_("ASN1 parser: Value is not valid."),
GNUTLS_E_ASN1_VALUE_NOT_VALID, 1),
ERROR_ENTRY (N_("ASN1 parser: Error in TAG."), GNUTLS_E_ASN1_TAG_ERROR, 1),
ERROR_ENTRY (N_("ASN1 parser: error in implicit tag"),
GNUTLS_E_ASN1_TAG_IMPLICIT, 1),
ERROR_ENTRY (N_("ASN1 parser: Error in type 'ANY'."),
GNUTLS_E_ASN1_TYPE_ANY_ERROR, 1),
ERROR_ENTRY (N_("ASN1 parser: Syntax error."), GNUTLS_E_ASN1_SYNTAX_ERROR,
1),
ERROR_ENTRY (N_("ASN1 parser: Overflow in DER parsing."),
GNUTLS_E_ASN1_DER_OVERFLOW, 1),
ERROR_ENTRY (N_("Too many empty record packets have been received."),
GNUTLS_E_TOO_MANY_EMPTY_PACKETS, 1),
ERROR_ENTRY (N_("The initialization of GnuTLS-extra has failed."),
GNUTLS_E_INIT_LIBEXTRA, 1),
ERROR_ENTRY (N_
("The GnuTLS library version does not match the GnuTLS-extra library version."),
GNUTLS_E_LIBRARY_VERSION_MISMATCH, 1),
ERROR_ENTRY (N_("The gcrypt library version is too old."),
GNUTLS_E_INCOMPATIBLE_GCRYPT_LIBRARY, 1),
ERROR_ENTRY (N_("The tasn1 library version is too old."),
GNUTLS_E_INCOMPATIBLE_LIBTASN1_LIBRARY, 1),
ERROR_ENTRY (N_("The initialization of LZO has failed."),
GNUTLS_E_LZO_INIT_FAILED, 1),
ERROR_ENTRY (N_("No supported compression algorithms have been found."),
GNUTLS_E_NO_COMPRESSION_ALGORITHMS, 1),
ERROR_ENTRY (N_("No supported cipher suites have been found."),
GNUTLS_E_NO_CIPHER_SUITES, 1),
ERROR_ENTRY (N_("The SRP username supplied is illegal."),
GNUTLS_E_ILLEGAL_SRP_USERNAME, 1),
ERROR_ENTRY (N_("The certificate has unsupported attributes."),
GNUTLS_E_X509_UNSUPPORTED_ATTRIBUTE, 1),
ERROR_ENTRY (N_("The OID is not supported."), GNUTLS_E_X509_UNSUPPORTED_OID,
1),
ERROR_ENTRY (N_("The hash algorithm is unknown."),
GNUTLS_E_UNKNOWN_HASH_ALGORITHM, 1),
ERROR_ENTRY (N_("The PKCS structure's content type is unknown."),
GNUTLS_E_UNKNOWN_PKCS_CONTENT_TYPE, 1),
ERROR_ENTRY (N_("The PKCS structure's bag type is unknown."),
GNUTLS_E_UNKNOWN_PKCS_BAG_TYPE, 1),
ERROR_ENTRY (N_("The given password contains invalid characters."),
GNUTLS_E_INVALID_PASSWORD, 1),
ERROR_ENTRY (N_("The Message Authentication Code verification failed."),
GNUTLS_E_MAC_VERIFY_FAILED, 1),
ERROR_ENTRY (N_("Some constraint limits were reached."),
GNUTLS_E_CONSTRAINT_ERROR, 1),
ERROR_ENTRY (N_("Failed to acquire random data."), GNUTLS_E_RANDOM_FAILED,
1),
ERROR_ENTRY (N_("Received a TLS/IA Intermediate Phase Finished message"),
GNUTLS_E_WARNING_IA_IPHF_RECEIVED, 0),
ERROR_ENTRY (N_("Received a TLS/IA Final Phase Finished message"),
GNUTLS_E_WARNING_IA_FPHF_RECEIVED, 0),
ERROR_ENTRY (N_("Verifying TLS/IA phase checksum failed"),
GNUTLS_E_IA_VERIFY_FAILED, 1),
ERROR_ENTRY (N_("The specified algorithm or protocol is unknown."),
GNUTLS_E_UNKNOWN_ALGORITHM, 1),
{NULL, NULL, 0, 0}
};
#define GNUTLS_ERROR_LOOP(b) \
const MHD_gnutls_error_entry *p; \
for(p = MHD_gtls_error_algorithms; p->desc != NULL; p++) { b ; }
#define GNUTLS_ERROR_ALG_LOOP(a) \
GNUTLS_ERROR_LOOP( if(p->number == error) { a; break; } )
/**
* MHD_gtls_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 manually, since some non-fatal errors to the protocol
* may be fatal for you (your program).
*
* This is only useful if you are dealing with errors from the
* record layer or the handshake layer.
*
* For positive @error values, 0 is returned.
*
**/
int
MHD_gtls_error_is_fatal (int error)
{
int ret = 1;
/* Input sanitzation. Positive values are not errors at all, and
definitely not fatal. */
if (error > 0)
return 0;
GNUTLS_ERROR_ALG_LOOP (ret = p->fatal);
return ret;
}
/**
* MHD_gtls_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 number returned by a gnutls function.
**/
void
MHD_gtls_perror (int error)
{
const char *ret = NULL;
/* avoid prefix */
GNUTLS_ERROR_ALG_LOOP (ret = p->desc);
if (ret == NULL)
ret = "(unknown)";
fprintf (stderr, "GNUTLS ERROR: %s\n", _(ret));
}
/**
* MHD_gtls_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(). Differences: it accepts an error
* number returned by a gnutls function; In case of an unknown error
* a descriptive string is sent instead of NULL.
**/
const char *
MHD_gtls_strerror (int error)
{
const char *ret = NULL;
/* avoid prefix */
GNUTLS_ERROR_ALG_LOOP (ret = p->desc);
if (ret == NULL)
return "(unknown error code)";
return _(ret);
}
/* This will print the actual define of the
* given error code.
*/
const char *
MHD__gnutls_strerror (int error)
{
const char *ret = NULL;
/* avoid prefix */
GNUTLS_ERROR_ALG_LOOP (ret = p->_name);
return _(ret);
}
int
MHD_gtls_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_SHORT_MEMORY_BUFFER;
case ASN1_MEM_ALLOC_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
*/
void
MHD_gtls_log (int level, const char *fmt, ...)
{
va_list args;
char str[MAX_LOG_SIZE];
void (*log_func) (int, const char *) = MHD__gnutls_log_func;
if (MHD__gnutls_log_func == NULL)
return;
va_start (args, fmt);
vsnprintf (str, MAX_LOG_SIZE - 1, fmt, args); /* Flawfinder: ignore */
va_end (args);
log_func (level, str);
}
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