/* error.c
 *
 * Copyright (C) 2006-2016 wolfSSL Inc.
 *
 * This file is part of wolfSSL.
 *
 * wolfSSL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * wolfSSL 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
 */


#ifdef HAVE_CONFIG_H
    #include <config.h>
#endif

#include <wolfssl/wolfcrypt/settings.h>

#include <wolfssl/wolfcrypt/error-crypt.h>

#ifdef _MSC_VER
    /* 4996 warning to use MS extensions e.g., strcpy_s instead of XSTRNCPY */
    #pragma warning(disable: 4996)
#endif

const char* wc_GetErrorString(int error)
{
#ifdef NO_ERROR_STRINGS

    (void)error;
    return "no support for error strings built in";

#else

    switch (error) {

    case OPEN_RAN_E :
        return "opening random device error";

    case READ_RAN_E :
        return "reading random device error";

    case WINCRYPT_E :
        return "windows crypt init error";

    case CRYPTGEN_E :
        return "windows crypt generation error";

    case RAN_BLOCK_E :
        return "random device read would block error";

    case BAD_MUTEX_E :
        return "Bad mutex, operation failed";

    case WC_TIMEOUT_E:
        return "Timeout error";

    case WC_PENDING_E:
        return "wolfCrypt Operation Pending (would block / eagain) error";

    case WC_NOT_PENDING_E:
        return "wolfCrypt operation not pending error";

    case MP_INIT_E :
        return "mp_init error state";

    case MP_READ_E :
        return "mp_read error state";

    case MP_EXPTMOD_E :
        return "mp_exptmod error state";

    case MP_TO_E :
        return "mp_to_xxx error state, can't convert";

    case MP_SUB_E :
        return "mp_sub error state, can't subtract";

    case MP_ADD_E :
        return "mp_add error state, can't add";

    case MP_MUL_E :
        return "mp_mul error state, can't multiply";

    case MP_MULMOD_E :
        return "mp_mulmod error state, can't multiply mod";

    case MP_MOD_E :
        return "mp_mod error state, can't mod";

    case MP_INVMOD_E :
        return "mp_invmod error state, can't inv mod";

    case MP_CMP_E :
        return "mp_cmp error state";

    case MP_ZERO_E :
        return "mp zero result, not expected";

    case MEMORY_E :
        return "out of memory error";

    case VAR_STATE_CHANGE_E :
        return "Variable state modified by different thread";

    case RSA_WRONG_TYPE_E :
        return "RSA wrong block type for RSA function";

    case RSA_BUFFER_E :
        return "RSA buffer error, output too small or input too big";

    case BUFFER_E :
        return "Buffer error, output too small or input too big";

    case ALGO_ID_E :
        return "Setting Cert AlgoID error";

    case PUBLIC_KEY_E :
        return "Setting Cert Public Key error";

    case DATE_E :
        return "Setting Cert Date validity error";

    case SUBJECT_E :
        return "Setting Cert Subject name error";

    case ISSUER_E :
        return "Setting Cert Issuer name error";

    case CA_TRUE_E :
        return "Setting basic constraint CA true error";

    case EXTENSIONS_E :
        return "Setting extensions error";

    case ASN_PARSE_E :
        return "ASN parsing error, invalid input";

    case ASN_VERSION_E :
        return "ASN version error, invalid number";

    case ASN_GETINT_E :
        return "ASN get big int error, invalid data";

    case ASN_RSA_KEY_E :
        return "ASN key init error, invalid input";

    case ASN_OBJECT_ID_E :
        return "ASN object id error, invalid id";

    case ASN_TAG_NULL_E :
        return "ASN tag error, not null";

    case ASN_EXPECT_0_E :
        return "ASN expect error, not zero";

    case ASN_BITSTR_E :
        return "ASN bit string error, wrong id";

    case ASN_UNKNOWN_OID_E :
        return "ASN oid error, unknown sum id";

    case ASN_DATE_SZ_E :
        return "ASN date error, bad size";

    case ASN_BEFORE_DATE_E :
        return "ASN date error, current date before";

    case ASN_AFTER_DATE_E :
        return "ASN date error, current date after";

    case ASN_SIG_OID_E :
        return "ASN signature error, mismatched oid";

    case ASN_TIME_E :
        return "ASN time error, unknown time type";

    case ASN_INPUT_E :
        return "ASN input error, not enough data";

    case ASN_SIG_CONFIRM_E :
        return "ASN sig error, confirm failure";

    case ASN_SIG_HASH_E :
        return "ASN sig error, unsupported hash type";

    case ASN_SIG_KEY_E :
        return "ASN sig error, unsupported key type";

    case ASN_DH_KEY_E :
        return "ASN key init error, invalid input";

    case ASN_NTRU_KEY_E :
        return "ASN NTRU key decode error, invalid input";

    case ASN_CRIT_EXT_E:
        return "X.509 Critical extension ignored";

    case ECC_BAD_ARG_E :
        return "ECC input argument wrong type, invalid input";

    case ASN_ECC_KEY_E :
        return "ECC ASN1 bad key data, invalid input";

    case ECC_CURVE_OID_E :
        return "ECC curve sum OID unsupported, invalid input";

    case BAD_FUNC_ARG :
        return "Bad function argument";

    case NOT_COMPILED_IN :
        return "Feature not compiled in";

    case UNICODE_SIZE_E :
        return "Unicode password too big";

    case NO_PASSWORD :
        return "No password provided by user";

    case ALT_NAME_E :
        return "Alt Name problem, too big";

    case AES_GCM_AUTH_E:
        return "AES-GCM Authentication check fail";

    case AES_CCM_AUTH_E:
        return "AES-CCM Authentication check fail";

    case ASYNC_INIT_E:
        return "Async Init error";

    case COMPRESS_INIT_E:
        return "Compress Init error";

    case COMPRESS_E:
        return "Compress error";

    case DECOMPRESS_INIT_E:
        return "DeCompress Init error";

    case DECOMPRESS_E:
        return "DeCompress error";

    case BAD_ALIGN_E:
        return "Bad alignment error, no alloc help";

    case ASN_NO_SIGNER_E :
        return "ASN no signer error to confirm failure";

    case ASN_CRL_CONFIRM_E :
        return "ASN CRL sig error, confirm failure";

    case ASN_CRL_NO_SIGNER_E :
        return "ASN CRL no signer error to confirm failure";

    case ASN_OCSP_CONFIRM_E :
        return "ASN OCSP sig error, confirm failure";

    case BAD_STATE_E:
        return "Bad state operation";

    case BAD_PADDING_E:
        return "Bad padding, message wrong length";

    case REQ_ATTRIBUTE_E:
        return "Setting cert request attributes error";

    case PKCS7_OID_E:
        return "PKCS#7 error: mismatched OID value";

    case PKCS7_RECIP_E:
        return "PKCS#7 error: no matching recipient found";

    case FIPS_NOT_ALLOWED_E:
        return "FIPS mode not allowed error";

    case ASN_NAME_INVALID_E:
        return "Name Constraint error";

    case RNG_FAILURE_E:
        return "Random Number Generator failed";

    case HMAC_MIN_KEYLEN_E:
        return "FIPS Mode HMAC Minimum Key Length error";

    case RSA_PAD_E:
        return "Rsa Padding error";

    case LENGTH_ONLY_E:
        return "Output length only set, not for other use error";

    case IN_CORE_FIPS_E:
        return "In Core Integrity check FIPS error";

    case AES_KAT_FIPS_E:
        return "AES Known Answer Test check FIPS error";

    case DES3_KAT_FIPS_E:
        return "DES3 Known Answer Test check FIPS error";

    case HMAC_KAT_FIPS_E:
        return "HMAC Known Answer Test check FIPS error";

    case RSA_KAT_FIPS_E:
        return "RSA Known Answer Test check FIPS error";

    case DRBG_KAT_FIPS_E:
        return "DRBG Known Answer Test check FIPS error";

    case DRBG_CONT_FIPS_E:
        return "DRBG Continuous Test FIPS error";

    case AESGCM_KAT_FIPS_E:
        return "AESGCM Known Answer Test check FIPS error";

    case THREAD_STORE_KEY_E:
        return "Thread Storage Key Create error";

    case THREAD_STORE_SET_E:
        return "Thread Storage Set error";

    case MAC_CMP_FAILED_E:
        return "MAC comparison failed";

    case IS_POINT_E:
        return "ECC is point on curve failed";

    case ECC_INF_E:
        return " ECC point at infinity error";

    case ECC_PRIV_KEY_E:
        return " ECC private key is not valid error";

    case SRP_CALL_ORDER_E:
        return "SRP function called in the wrong order error";

    case SRP_VERIFY_E:
        return "SRP proof verification error";

    case SRP_BAD_KEY_E:
        return "SRP bad key values error";

    case ASN_NO_SKID:
        return "ASN no Subject Key Identifier found error";

    case ASN_NO_AKID:
        return "ASN no Authority Key Identifier found error";

    case ASN_NO_KEYUSAGE:
        return "ASN no Key Usage found error";

    case SKID_E:
        return "Setting Subject Key Identifier error";

    case AKID_E:
        return "Setting Authority Key Identifier error";

    case KEYUSAGE_E:
        return "Bad Key Usage value error";

    case CERTPOLICIES_E:
        return "Setting Certificate Policies error";

    case WC_INIT_E:
        return "wolfCrypt Initialize Failure error";

    case SIG_VERIFY_E:
        return "Signature verify error";

    case BAD_COND_E:
        return "Bad condition variable operation error";

    case SIG_TYPE_E:
        return "Signature type not enabled/available";

    case HASH_TYPE_E:
        return "Hash type not enabled/available";

    case WC_KEY_SIZE_E:
        return "Key size error, either too small or large";

    case ASN_COUNTRY_SIZE_E:
        return "Country code size error, either too small or large";

    case MISSING_RNG_E:
        return "RNG required but not provided";

    case ASN_PATHLEN_SIZE_E:
        return "ASN CA path length value too large error";

    case ASN_PATHLEN_INV_E:
        return "ASN CA path length larger than signer error";

    case BAD_KEYWRAP_ALG_E:
        return "Unsupported key wrap algorithm error";

    case BAD_KEYWRAP_IV_E:
        return "Decrypted AES key wrap IV does not match expected";

    default:
        return "unknown error number";

    }

#endif /* NO_ERROR_STRINGS */

}

void wc_ErrorString(int error, char* buffer)
{
    XSTRNCPY(buffer, wc_GetErrorString(error), WOLFSSL_MAX_ERROR_SZ);
}
