error.c

00001 /*
00002  *  Error message information
00003  *
00004  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
00005  *  SPDX-License-Identifier: Apache-2.0
00006  *
00007  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
00008  *  not use this file except in compliance with the License.
00009  *  You may obtain a copy of the License at
00010  *
00011  *  http://www.apache.org/licenses/LICENSE-2.0
00012  *
00013  *  Unless required by applicable law or agreed to in writing, software
00014  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00015  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00016  *  See the License for the specific language governing permissions and
00017  *  limitations under the License.
00018  *
00019  *  This file is part of mbed TLS (https://tls.mbed.org)
00020  */
00021 
00022 #if !defined(MBEDTLS_CONFIG_FILE)
00023 #include "mbedtls/config.h"
00024 #else
00025 #include MBEDTLS_CONFIG_FILE
00026 #endif
00027 
00028 #if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
00029 #include "mbedtls/error.h"
00030 #include <string.h>
00031 #endif
00032 
00033 #if defined(MBEDTLS_PLATFORM_C)
00034 #include "mbedtls/platform.h"
00035 #else
00036 #define mbedtls_snprintf snprintf
00037 #endif
00038 
00039 #if defined(MBEDTLS_ERROR_C)
00040 
00041 #include <stdio.h>
00042 
00043 #if defined(MBEDTLS_AES_C)
00044 #include "mbedtls/aes.h"
00045 #endif
00046 
00047 #if defined(MBEDTLS_BASE64_C)
00048 #include "mbedtls/base64.h"
00049 #endif
00050 
00051 #if defined(MBEDTLS_BIGNUM_C)
00052 #include "mbedtls/bignum.h"
00053 #endif
00054 
00055 #if defined(MBEDTLS_BLOWFISH_C)
00056 #include "mbedtls/blowfish.h"
00057 #endif
00058 
00059 #if defined(MBEDTLS_CAMELLIA_C)
00060 #include "mbedtls/camellia.h"
00061 #endif
00062 
00063 #if defined(MBEDTLS_CCM_C)
00064 #include "mbedtls/ccm.h"
00065 #endif
00066 
00067 #if defined(MBEDTLS_CIPHER_C)
00068 #include "mbedtls/cipher.h"
00069 #endif
00070 
00071 #if defined(MBEDTLS_CTR_DRBG_C)
00072 #include "mbedtls/ctr_drbg.h"
00073 #endif
00074 
00075 #if defined(MBEDTLS_DES_C)
00076 #include "mbedtls/des.h"
00077 #endif
00078 
00079 #if defined(MBEDTLS_DHM_C)
00080 #include "mbedtls/dhm.h"
00081 #endif
00082 
00083 #if defined(MBEDTLS_ECP_C)
00084 #include "mbedtls/ecp.h"
00085 #endif
00086 
00087 #if defined(MBEDTLS_ENTROPY_C)
00088 #include "mbedtls/entropy.h"
00089 #endif
00090 
00091 #if defined(MBEDTLS_GCM_C)
00092 #include "mbedtls/gcm.h"
00093 #endif
00094 
00095 #if defined(MBEDTLS_HMAC_DRBG_C)
00096 #include "mbedtls/hmac_drbg.h"
00097 #endif
00098 
00099 #if defined(MBEDTLS_MD_C)
00100 #include "mbedtls/md.h"
00101 #endif
00102 
00103 #if defined(MBEDTLS_NET_C)
00104 #include "mbedtls/net.h"
00105 #endif
00106 
00107 #if defined(MBEDTLS_OID_C)
00108 #include "mbedtls/oid.h"
00109 #endif
00110 
00111 #if defined(MBEDTLS_PADLOCK_C)
00112 #include "mbedtls/padlock.h"
00113 #endif
00114 
00115 #if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
00116 #include "mbedtls/pem.h"
00117 #endif
00118 
00119 #if defined(MBEDTLS_PK_C)
00120 #include "mbedtls/pk.h"
00121 #endif
00122 
00123 #if defined(MBEDTLS_PKCS12_C)
00124 #include "mbedtls/pkcs12.h"
00125 #endif
00126 
00127 #if defined(MBEDTLS_PKCS5_C)
00128 #include "mbedtls/pkcs5.h"
00129 #endif
00130 
00131 #if defined(MBEDTLS_RSA_C)
00132 #include "mbedtls/rsa.h"
00133 #endif
00134 
00135 #if defined(MBEDTLS_SSL_TLS_C)
00136 #include "mbedtls/ssl.h"
00137 #endif
00138 
00139 #if defined(MBEDTLS_THREADING_C)
00140 #include "mbedtls/threading.h"
00141 #endif
00142 
00143 #if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
00144 #include "mbedtls/x509.h"
00145 #endif
00146 
00147 #if defined(MBEDTLS_XTEA_C)
00148 #include "mbedtls/xtea.h"
00149 #endif
00150 
00151 
00152 void mbedtls_strerror( int ret, char *buf, size_t buflen )
00153 {
00154     size_t len;
00155     int use_ret;
00156 
00157     if( buflen == 0 )
00158         return;
00159 
00160     memset( buf, 0x00, buflen );
00161 
00162     if( ret < 0 )
00163         ret = -ret;
00164 
00165     if( ret & 0xFF80 )
00166     {
00167         use_ret = ret & 0xFF80;
00168 
00169         // High level error codes
00170         //
00171         // BEGIN generated code
00172 #if defined(MBEDTLS_CIPHER_C)
00173         if( use_ret == -(MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE) )
00174             mbedtls_snprintf( buf, buflen, "CIPHER - The selected feature is not available" );
00175         if( use_ret == -(MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA) )
00176             mbedtls_snprintf( buf, buflen, "CIPHER - Bad input parameters to function" );
00177         if( use_ret == -(MBEDTLS_ERR_CIPHER_ALLOC_FAILED) )
00178             mbedtls_snprintf( buf, buflen, "CIPHER - Failed to allocate memory" );
00179         if( use_ret == -(MBEDTLS_ERR_CIPHER_INVALID_PADDING) )
00180             mbedtls_snprintf( buf, buflen, "CIPHER - Input data contains invalid padding and is rejected" );
00181         if( use_ret == -(MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED) )
00182             mbedtls_snprintf( buf, buflen, "CIPHER - Decryption of block requires a full block" );
00183         if( use_ret == -(MBEDTLS_ERR_CIPHER_AUTH_FAILED) )
00184             mbedtls_snprintf( buf, buflen, "CIPHER - Authentication failed (for AEAD modes)" );
00185 #endif /* MBEDTLS_CIPHER_C */
00186 
00187 #if defined(MBEDTLS_DHM_C)
00188         if( use_ret == -(MBEDTLS_ERR_DHM_BAD_INPUT_DATA) )
00189             mbedtls_snprintf( buf, buflen, "DHM - Bad input parameters to function" );
00190         if( use_ret == -(MBEDTLS_ERR_DHM_READ_PARAMS_FAILED) )
00191             mbedtls_snprintf( buf, buflen, "DHM - Reading of the DHM parameters failed" );
00192         if( use_ret == -(MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED) )
00193             mbedtls_snprintf( buf, buflen, "DHM - Making of the DHM parameters failed" );
00194         if( use_ret == -(MBEDTLS_ERR_DHM_READ_PUBLIC_FAILED) )
00195             mbedtls_snprintf( buf, buflen, "DHM - Reading of the public values failed" );
00196         if( use_ret == -(MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED) )
00197             mbedtls_snprintf( buf, buflen, "DHM - Making of the public value failed" );
00198         if( use_ret == -(MBEDTLS_ERR_DHM_CALC_SECRET_FAILED) )
00199             mbedtls_snprintf( buf, buflen, "DHM - Calculation of the DHM secret failed" );
00200         if( use_ret == -(MBEDTLS_ERR_DHM_INVALID_FORMAT) )
00201             mbedtls_snprintf( buf, buflen, "DHM - The ASN.1 data is not formatted correctly" );
00202         if( use_ret == -(MBEDTLS_ERR_DHM_ALLOC_FAILED) )
00203             mbedtls_snprintf( buf, buflen, "DHM - Allocation of memory failed" );
00204         if( use_ret == -(MBEDTLS_ERR_DHM_FILE_IO_ERROR) )
00205             mbedtls_snprintf( buf, buflen, "DHM - Read/write of file failed" );
00206 #endif /* MBEDTLS_DHM_C */
00207 
00208 #if defined(MBEDTLS_ECP_C)
00209         if( use_ret == -(MBEDTLS_ERR_ECP_BAD_INPUT_DATA) )
00210             mbedtls_snprintf( buf, buflen, "ECP - Bad input parameters to function" );
00211         if( use_ret == -(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL) )
00212             mbedtls_snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
00213         if( use_ret == -(MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE) )
00214             mbedtls_snprintf( buf, buflen, "ECP - Requested curve not available" );
00215         if( use_ret == -(MBEDTLS_ERR_ECP_VERIFY_FAILED) )
00216             mbedtls_snprintf( buf, buflen, "ECP - The signature is not valid" );
00217         if( use_ret == -(MBEDTLS_ERR_ECP_ALLOC_FAILED) )
00218             mbedtls_snprintf( buf, buflen, "ECP - Memory allocation failed" );
00219         if( use_ret == -(MBEDTLS_ERR_ECP_RANDOM_FAILED) )
00220             mbedtls_snprintf( buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed" );
00221         if( use_ret == -(MBEDTLS_ERR_ECP_INVALID_KEY) )
00222             mbedtls_snprintf( buf, buflen, "ECP - Invalid private or public key" );
00223         if( use_ret == -(MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH) )
00224             mbedtls_snprintf( buf, buflen, "ECP - Signature is valid but shorter than the user-supplied length" );
00225 #endif /* MBEDTLS_ECP_C */
00226 
00227 #if defined(MBEDTLS_MD_C)
00228         if( use_ret == -(MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE) )
00229             mbedtls_snprintf( buf, buflen, "MD - The selected feature is not available" );
00230         if( use_ret == -(MBEDTLS_ERR_MD_BAD_INPUT_DATA) )
00231             mbedtls_snprintf( buf, buflen, "MD - Bad input parameters to function" );
00232         if( use_ret == -(MBEDTLS_ERR_MD_ALLOC_FAILED) )
00233             mbedtls_snprintf( buf, buflen, "MD - Failed to allocate memory" );
00234         if( use_ret == -(MBEDTLS_ERR_MD_FILE_IO_ERROR) )
00235             mbedtls_snprintf( buf, buflen, "MD - Opening or reading of file failed" );
00236 #endif /* MBEDTLS_MD_C */
00237 
00238 #if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
00239         if( use_ret == -(MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT) )
00240             mbedtls_snprintf( buf, buflen, "PEM - No PEM header or footer found" );
00241         if( use_ret == -(MBEDTLS_ERR_PEM_INVALID_DATA) )
00242             mbedtls_snprintf( buf, buflen, "PEM - PEM string is not as expected" );
00243         if( use_ret == -(MBEDTLS_ERR_PEM_ALLOC_FAILED) )
00244             mbedtls_snprintf( buf, buflen, "PEM - Failed to allocate memory" );
00245         if( use_ret == -(MBEDTLS_ERR_PEM_INVALID_ENC_IV) )
00246             mbedtls_snprintf( buf, buflen, "PEM - RSA IV is not in hex-format" );
00247         if( use_ret == -(MBEDTLS_ERR_PEM_UNKNOWN_ENC_ALG) )
00248             mbedtls_snprintf( buf, buflen, "PEM - Unsupported key encryption algorithm" );
00249         if( use_ret == -(MBEDTLS_ERR_PEM_PASSWORD_REQUIRED) )
00250             mbedtls_snprintf( buf, buflen, "PEM - Private key password can't be empty" );
00251         if( use_ret == -(MBEDTLS_ERR_PEM_PASSWORD_MISMATCH) )
00252             mbedtls_snprintf( buf, buflen, "PEM - Given private key password does not allow for correct decryption" );
00253         if( use_ret == -(MBEDTLS_ERR_PEM_FEATURE_UNAVAILABLE) )
00254             mbedtls_snprintf( buf, buflen, "PEM - Unavailable feature, e.g. hashing/encryption combination" );
00255         if( use_ret == -(MBEDTLS_ERR_PEM_BAD_INPUT_DATA) )
00256             mbedtls_snprintf( buf, buflen, "PEM - Bad input parameters to function" );
00257 #endif /* MBEDTLS_PEM_PARSE_C || MBEDTLS_PEM_WRITE_C */
00258 
00259 #if defined(MBEDTLS_PK_C)
00260         if( use_ret == -(MBEDTLS_ERR_PK_ALLOC_FAILED) )
00261             mbedtls_snprintf( buf, buflen, "PK - Memory allocation failed" );
00262         if( use_ret == -(MBEDTLS_ERR_PK_TYPE_MISMATCH) )
00263             mbedtls_snprintf( buf, buflen, "PK - Type mismatch, eg attempt to encrypt with an ECDSA key" );
00264         if( use_ret == -(MBEDTLS_ERR_PK_BAD_INPUT_DATA) )
00265             mbedtls_snprintf( buf, buflen, "PK - Bad input parameters to function" );
00266         if( use_ret == -(MBEDTLS_ERR_PK_FILE_IO_ERROR) )
00267             mbedtls_snprintf( buf, buflen, "PK - Read/write of file failed" );
00268         if( use_ret == -(MBEDTLS_ERR_PK_KEY_INVALID_VERSION) )
00269             mbedtls_snprintf( buf, buflen, "PK - Unsupported key version" );
00270         if( use_ret == -(MBEDTLS_ERR_PK_KEY_INVALID_FORMAT) )
00271             mbedtls_snprintf( buf, buflen, "PK - Invalid key tag or value" );
00272         if( use_ret == -(MBEDTLS_ERR_PK_UNKNOWN_PK_ALG) )
00273             mbedtls_snprintf( buf, buflen, "PK - Key algorithm is unsupported (only RSA and EC are supported)" );
00274         if( use_ret == -(MBEDTLS_ERR_PK_PASSWORD_REQUIRED) )
00275             mbedtls_snprintf( buf, buflen, "PK - Private key password can't be empty" );
00276         if( use_ret == -(MBEDTLS_ERR_PK_PASSWORD_MISMATCH) )
00277             mbedtls_snprintf( buf, buflen, "PK - Given private key password does not allow for correct decryption" );
00278         if( use_ret == -(MBEDTLS_ERR_PK_INVALID_PUBKEY) )
00279             mbedtls_snprintf( buf, buflen, "PK - The pubkey tag or value is invalid (only RSA and EC are supported)" );
00280         if( use_ret == -(MBEDTLS_ERR_PK_INVALID_ALG) )
00281             mbedtls_snprintf( buf, buflen, "PK - The algorithm tag or value is invalid" );
00282         if( use_ret == -(MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE) )
00283             mbedtls_snprintf( buf, buflen, "PK - Elliptic curve is unsupported (only NIST curves are supported)" );
00284         if( use_ret == -(MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE) )
00285             mbedtls_snprintf( buf, buflen, "PK - Unavailable feature, e.g. RSA disabled for RSA key" );
00286         if( use_ret == -(MBEDTLS_ERR_PK_SIG_LEN_MISMATCH) )
00287             mbedtls_snprintf( buf, buflen, "PK - The signature is valid but its length is less than expected" );
00288 #endif /* MBEDTLS_PK_C */
00289 
00290 #if defined(MBEDTLS_PKCS12_C)
00291         if( use_ret == -(MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA) )
00292             mbedtls_snprintf( buf, buflen, "PKCS12 - Bad input parameters to function" );
00293         if( use_ret == -(MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE) )
00294             mbedtls_snprintf( buf, buflen, "PKCS12 - Feature not available, e.g. unsupported encryption scheme" );
00295         if( use_ret == -(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT) )
00296             mbedtls_snprintf( buf, buflen, "PKCS12 - PBE ASN.1 data not as expected" );
00297         if( use_ret == -(MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH) )
00298             mbedtls_snprintf( buf, buflen, "PKCS12 - Given private key password does not allow for correct decryption" );
00299 #endif /* MBEDTLS_PKCS12_C */
00300 
00301 #if defined(MBEDTLS_PKCS5_C)
00302         if( use_ret == -(MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA) )
00303             mbedtls_snprintf( buf, buflen, "PKCS5 - Bad input parameters to function" );
00304         if( use_ret == -(MBEDTLS_ERR_PKCS5_INVALID_FORMAT) )
00305             mbedtls_snprintf( buf, buflen, "PKCS5 - Unexpected ASN.1 data" );
00306         if( use_ret == -(MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE) )
00307             mbedtls_snprintf( buf, buflen, "PKCS5 - Requested encryption or digest alg not available" );
00308         if( use_ret == -(MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH) )
00309             mbedtls_snprintf( buf, buflen, "PKCS5 - Given private key password does not allow for correct decryption" );
00310 #endif /* MBEDTLS_PKCS5_C */
00311 
00312 #if defined(MBEDTLS_RSA_C)
00313         if( use_ret == -(MBEDTLS_ERR_RSA_BAD_INPUT_DATA) )
00314             mbedtls_snprintf( buf, buflen, "RSA - Bad input parameters to function" );
00315         if( use_ret == -(MBEDTLS_ERR_RSA_INVALID_PADDING) )
00316             mbedtls_snprintf( buf, buflen, "RSA - Input data contains invalid padding and is rejected" );
00317         if( use_ret == -(MBEDTLS_ERR_RSA_KEY_GEN_FAILED) )
00318             mbedtls_snprintf( buf, buflen, "RSA - Something failed during generation of a key" );
00319         if( use_ret == -(MBEDTLS_ERR_RSA_KEY_CHECK_FAILED) )
00320             mbedtls_snprintf( buf, buflen, "RSA - Key failed to pass the library's validity check" );
00321         if( use_ret == -(MBEDTLS_ERR_RSA_PUBLIC_FAILED) )
00322             mbedtls_snprintf( buf, buflen, "RSA - The public key operation failed" );
00323         if( use_ret == -(MBEDTLS_ERR_RSA_PRIVATE_FAILED) )
00324             mbedtls_snprintf( buf, buflen, "RSA - The private key operation failed" );
00325         if( use_ret == -(MBEDTLS_ERR_RSA_VERIFY_FAILED) )
00326             mbedtls_snprintf( buf, buflen, "RSA - The PKCS#1 verification failed" );
00327         if( use_ret == -(MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE) )
00328             mbedtls_snprintf( buf, buflen, "RSA - The output buffer for decryption is not large enough" );
00329         if( use_ret == -(MBEDTLS_ERR_RSA_RNG_FAILED) )
00330             mbedtls_snprintf( buf, buflen, "RSA - The random generator failed to generate non-zeros" );
00331 #endif /* MBEDTLS_RSA_C */
00332 
00333 #if defined(MBEDTLS_SSL_TLS_C)
00334         if( use_ret == -(MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE) )
00335             mbedtls_snprintf( buf, buflen, "SSL - The requested feature is not available" );
00336         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_INPUT_DATA) )
00337             mbedtls_snprintf( buf, buflen, "SSL - Bad input parameters to function" );
00338         if( use_ret == -(MBEDTLS_ERR_SSL_INVALID_MAC) )
00339             mbedtls_snprintf( buf, buflen, "SSL - Verification of the message MAC failed" );
00340         if( use_ret == -(MBEDTLS_ERR_SSL_INVALID_RECORD) )
00341             mbedtls_snprintf( buf, buflen, "SSL - An invalid SSL record was received" );
00342         if( use_ret == -(MBEDTLS_ERR_SSL_CONN_EOF) )
00343             mbedtls_snprintf( buf, buflen, "SSL - The connection indicated an EOF" );
00344         if( use_ret == -(MBEDTLS_ERR_SSL_UNKNOWN_CIPHER) )
00345             mbedtls_snprintf( buf, buflen, "SSL - An unknown cipher was received" );
00346         if( use_ret == -(MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN) )
00347             mbedtls_snprintf( buf, buflen, "SSL - The server has no ciphersuites in common with the client" );
00348         if( use_ret == -(MBEDTLS_ERR_SSL_NO_RNG) )
00349             mbedtls_snprintf( buf, buflen, "SSL - No RNG was provided to the SSL module" );
00350         if( use_ret == -(MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE) )
00351             mbedtls_snprintf( buf, buflen, "SSL - No client certification received from the client, but required by the authentication mode" );
00352         if( use_ret == -(MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE) )
00353             mbedtls_snprintf( buf, buflen, "SSL - Our own certificate(s) is/are too large to send in an SSL message" );
00354         if( use_ret == -(MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED) )
00355             mbedtls_snprintf( buf, buflen, "SSL - The own certificate is not set, but needed by the server" );
00356         if( use_ret == -(MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED) )
00357             mbedtls_snprintf( buf, buflen, "SSL - The own private key or pre-shared key is not set, but needed" );
00358         if( use_ret == -(MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED) )
00359             mbedtls_snprintf( buf, buflen, "SSL - No CA Chain is set, but required to operate" );
00360         if( use_ret == -(MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE) )
00361             mbedtls_snprintf( buf, buflen, "SSL - An unexpected message was received from our peer" );
00362         if( use_ret == -(MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE) )
00363         {
00364             mbedtls_snprintf( buf, buflen, "SSL - A fatal alert message was received from our peer" );
00365             return;
00366         }
00367         if( use_ret == -(MBEDTLS_ERR_SSL_PEER_VERIFY_FAILED) )
00368             mbedtls_snprintf( buf, buflen, "SSL - Verification of our peer failed" );
00369         if( use_ret == -(MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) )
00370             mbedtls_snprintf( buf, buflen, "SSL - The peer notified us that the connection is going to be closed" );
00371         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO) )
00372             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientHello handshake message failed" );
00373         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO) )
00374             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ServerHello handshake message failed" );
00375         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE) )
00376             mbedtls_snprintf( buf, buflen, "SSL - Processing of the Certificate handshake message failed" );
00377         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST) )
00378             mbedtls_snprintf( buf, buflen, "SSL - Processing of the CertificateRequest handshake message failed" );
00379         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE) )
00380             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ServerKeyExchange handshake message failed" );
00381         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO_DONE) )
00382             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ServerHelloDone handshake message failed" );
00383         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE) )
00384             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed" );
00385         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP) )
00386             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Read Public" );
00387         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS) )
00388             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Calculate Secret" );
00389         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY) )
00390             mbedtls_snprintf( buf, buflen, "SSL - Processing of the CertificateVerify handshake message failed" );
00391         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC) )
00392             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ChangeCipherSpec handshake message failed" );
00393         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_FINISHED) )
00394             mbedtls_snprintf( buf, buflen, "SSL - Processing of the Finished handshake message failed" );
00395         if( use_ret == -(MBEDTLS_ERR_SSL_ALLOC_FAILED) )
00396             mbedtls_snprintf( buf, buflen, "SSL - Memory allocation failed" );
00397         if( use_ret == -(MBEDTLS_ERR_SSL_HW_ACCEL_FAILED) )
00398             mbedtls_snprintf( buf, buflen, "SSL - Hardware acceleration function returned with error" );
00399         if( use_ret == -(MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH) )
00400             mbedtls_snprintf( buf, buflen, "SSL - Hardware acceleration function skipped / left alone data" );
00401         if( use_ret == -(MBEDTLS_ERR_SSL_COMPRESSION_FAILED) )
00402             mbedtls_snprintf( buf, buflen, "SSL - Processing of the compression / decompression failed" );
00403         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION) )
00404             mbedtls_snprintf( buf, buflen, "SSL - Handshake protocol not within min/max boundaries" );
00405         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_NEW_SESSION_TICKET) )
00406             mbedtls_snprintf( buf, buflen, "SSL - Processing of the NewSessionTicket handshake message failed" );
00407         if( use_ret == -(MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED) )
00408             mbedtls_snprintf( buf, buflen, "SSL - Session ticket has expired" );
00409         if( use_ret == -(MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH) )
00410             mbedtls_snprintf( buf, buflen, "SSL - Public key type mismatch (eg, asked for RSA key exchange and presented EC key)" );
00411         if( use_ret == -(MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY) )
00412             mbedtls_snprintf( buf, buflen, "SSL - Unknown identity received (eg, PSK identity)" );
00413         if( use_ret == -(MBEDTLS_ERR_SSL_INTERNAL_ERROR) )
00414             mbedtls_snprintf( buf, buflen, "SSL - Internal error (eg, unexpected failure in lower-level module)" );
00415         if( use_ret == -(MBEDTLS_ERR_SSL_COUNTER_WRAPPING) )
00416             mbedtls_snprintf( buf, buflen, "SSL - A counter would wrap (eg, too many messages exchanged)" );
00417         if( use_ret == -(MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO) )
00418             mbedtls_snprintf( buf, buflen, "SSL - Unexpected message at ServerHello in renegotiation" );
00419         if( use_ret == -(MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED) )
00420             mbedtls_snprintf( buf, buflen, "SSL - DTLS client must retry for hello verification" );
00421         if( use_ret == -(MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL) )
00422             mbedtls_snprintf( buf, buflen, "SSL - A buffer is too small to receive or write a message" );
00423         if( use_ret == -(MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE) )
00424             mbedtls_snprintf( buf, buflen, "SSL - None of the common ciphersuites is usable (eg, no suitable certificate, see debug messages)" );
00425         if( use_ret == -(MBEDTLS_ERR_SSL_WANT_READ) )
00426             mbedtls_snprintf( buf, buflen, "SSL - Connection requires a read call" );
00427         if( use_ret == -(MBEDTLS_ERR_SSL_WANT_WRITE) )
00428             mbedtls_snprintf( buf, buflen, "SSL - Connection requires a write call" );
00429         if( use_ret == -(MBEDTLS_ERR_SSL_TIMEOUT) )
00430             mbedtls_snprintf( buf, buflen, "SSL - The operation timed out" );
00431         if( use_ret == -(MBEDTLS_ERR_SSL_CLIENT_RECONNECT) )
00432             mbedtls_snprintf( buf, buflen, "SSL - The client initiated a reconnect from the same port" );
00433 #endif /* MBEDTLS_SSL_TLS_C */
00434 
00435 #if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
00436         if( use_ret == -(MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE) )
00437             mbedtls_snprintf( buf, buflen, "X509 - Unavailable feature, e.g. RSA hashing/encryption combination" );
00438         if( use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_OID) )
00439             mbedtls_snprintf( buf, buflen, "X509 - Requested OID is unknown" );
00440         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_FORMAT) )
00441             mbedtls_snprintf( buf, buflen, "X509 - The CRT/CRL/CSR format is invalid, e.g. different type expected" );
00442         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_VERSION) )
00443             mbedtls_snprintf( buf, buflen, "X509 - The CRT/CRL/CSR version element is invalid" );
00444         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_SERIAL) )
00445             mbedtls_snprintf( buf, buflen, "X509 - The serial tag or value is invalid" );
00446         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_ALG) )
00447             mbedtls_snprintf( buf, buflen, "X509 - The algorithm tag or value is invalid" );
00448         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_NAME) )
00449             mbedtls_snprintf( buf, buflen, "X509 - The name tag or value is invalid" );
00450         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_DATE) )
00451             mbedtls_snprintf( buf, buflen, "X509 - The date tag or value is invalid" );
00452         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_SIGNATURE) )
00453             mbedtls_snprintf( buf, buflen, "X509 - The signature tag or value invalid" );
00454         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_EXTENSIONS) )
00455             mbedtls_snprintf( buf, buflen, "X509 - The extension tag or value is invalid" );
00456         if( use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_VERSION) )
00457             mbedtls_snprintf( buf, buflen, "X509 - CRT/CRL/CSR has an unsupported version number" );
00458         if( use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG) )
00459             mbedtls_snprintf( buf, buflen, "X509 - Signature algorithm (oid) is unsupported" );
00460         if( use_ret == -(MBEDTLS_ERR_X509_SIG_MISMATCH) )
00461             mbedtls_snprintf( buf, buflen, "X509 - Signature algorithms do not match. (see \\c ::mbedtls_x509_crt sig_oid)" );
00462         if( use_ret == -(MBEDTLS_ERR_X509_CERT_VERIFY_FAILED) )
00463             mbedtls_snprintf( buf, buflen, "X509 - Certificate verification failed, e.g. CRL, CA or signature check failed" );
00464         if( use_ret == -(MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT) )
00465             mbedtls_snprintf( buf, buflen, "X509 - Format not recognized as DER or PEM" );
00466         if( use_ret == -(MBEDTLS_ERR_X509_BAD_INPUT_DATA) )
00467             mbedtls_snprintf( buf, buflen, "X509 - Input invalid" );
00468         if( use_ret == -(MBEDTLS_ERR_X509_ALLOC_FAILED) )
00469             mbedtls_snprintf( buf, buflen, "X509 - Allocation of memory failed" );
00470         if( use_ret == -(MBEDTLS_ERR_X509_FILE_IO_ERROR) )
00471             mbedtls_snprintf( buf, buflen, "X509 - Read/write of file failed" );
00472         if( use_ret == -(MBEDTLS_ERR_X509_BUFFER_TOO_SMALL) )
00473             mbedtls_snprintf( buf, buflen, "X509 - Destination buffer is too small" );
00474 #endif /* MBEDTLS_X509_USE_C || MBEDTLS_X509_CREATE_C */
00475         // END generated code
00476 
00477         if( strlen( buf ) == 0 )
00478             mbedtls_snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
00479     }
00480 
00481     use_ret = ret & ~0xFF80;
00482 
00483     if( use_ret == 0 )
00484         return;
00485 
00486     // If high level code is present, make a concatenation between both
00487     // error strings.
00488     //
00489     len = strlen( buf );
00490 
00491     if( len > 0 )
00492     {
00493         if( buflen - len < 5 )
00494             return;
00495 
00496         mbedtls_snprintf( buf + len, buflen - len, " : " );
00497 
00498         buf += len + 3;
00499         buflen -= len + 3;
00500     }
00501 
00502     // Low level error codes
00503     //
00504     // BEGIN generated code
00505 #if defined(MBEDTLS_AES_C)
00506     if( use_ret == -(MBEDTLS_ERR_AES_INVALID_KEY_LENGTH) )
00507         mbedtls_snprintf( buf, buflen, "AES - Invalid key length" );
00508     if( use_ret == -(MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH) )
00509         mbedtls_snprintf( buf, buflen, "AES - Invalid data input length" );
00510 #endif /* MBEDTLS_AES_C */
00511 
00512 #if defined(MBEDTLS_ASN1_PARSE_C)
00513     if( use_ret == -(MBEDTLS_ERR_ASN1_OUT_OF_DATA) )
00514         mbedtls_snprintf( buf, buflen, "ASN1 - Out of data when parsing an ASN1 data structure" );
00515     if( use_ret == -(MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) )
00516         mbedtls_snprintf( buf, buflen, "ASN1 - ASN1 tag was of an unexpected value" );
00517     if( use_ret == -(MBEDTLS_ERR_ASN1_INVALID_LENGTH) )
00518         mbedtls_snprintf( buf, buflen, "ASN1 - Error when trying to determine the length or invalid length" );
00519     if( use_ret == -(MBEDTLS_ERR_ASN1_LENGTH_MISMATCH) )
00520         mbedtls_snprintf( buf, buflen, "ASN1 - Actual length differs from expected length" );
00521     if( use_ret == -(MBEDTLS_ERR_ASN1_INVALID_DATA) )
00522         mbedtls_snprintf( buf, buflen, "ASN1 - Data is invalid. (not used)" );
00523     if( use_ret == -(MBEDTLS_ERR_ASN1_ALLOC_FAILED) )
00524         mbedtls_snprintf( buf, buflen, "ASN1 - Memory allocation failed" );
00525     if( use_ret == -(MBEDTLS_ERR_ASN1_BUF_TOO_SMALL) )
00526         mbedtls_snprintf( buf, buflen, "ASN1 - Buffer too small when writing ASN.1 data structure" );
00527 #endif /* MBEDTLS_ASN1_PARSE_C */
00528 
00529 #if defined(MBEDTLS_BASE64_C)
00530     if( use_ret == -(MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL) )
00531         mbedtls_snprintf( buf, buflen, "BASE64 - Output buffer too small" );
00532     if( use_ret == -(MBEDTLS_ERR_BASE64_INVALID_CHARACTER) )
00533         mbedtls_snprintf( buf, buflen, "BASE64 - Invalid character in input" );
00534 #endif /* MBEDTLS_BASE64_C */
00535 
00536 #if defined(MBEDTLS_BIGNUM_C)
00537     if( use_ret == -(MBEDTLS_ERR_MPI_FILE_IO_ERROR) )
00538         mbedtls_snprintf( buf, buflen, "BIGNUM - An error occurred while reading from or writing to a file" );
00539     if( use_ret == -(MBEDTLS_ERR_MPI_BAD_INPUT_DATA) )
00540         mbedtls_snprintf( buf, buflen, "BIGNUM - Bad input parameters to function" );
00541     if( use_ret == -(MBEDTLS_ERR_MPI_INVALID_CHARACTER) )
00542         mbedtls_snprintf( buf, buflen, "BIGNUM - There is an invalid character in the digit string" );
00543     if( use_ret == -(MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL) )
00544         mbedtls_snprintf( buf, buflen, "BIGNUM - The buffer is too small to write to" );
00545     if( use_ret == -(MBEDTLS_ERR_MPI_NEGATIVE_VALUE) )
00546         mbedtls_snprintf( buf, buflen, "BIGNUM - The input arguments are negative or result in illegal output" );
00547     if( use_ret == -(MBEDTLS_ERR_MPI_DIVISION_BY_ZERO) )
00548         mbedtls_snprintf( buf, buflen, "BIGNUM - The input argument for division is zero, which is not allowed" );
00549     if( use_ret == -(MBEDTLS_ERR_MPI_NOT_ACCEPTABLE) )
00550         mbedtls_snprintf( buf, buflen, "BIGNUM - The input arguments are not acceptable" );
00551     if( use_ret == -(MBEDTLS_ERR_MPI_ALLOC_FAILED) )
00552         mbedtls_snprintf( buf, buflen, "BIGNUM - Memory allocation failed" );
00553 #endif /* MBEDTLS_BIGNUM_C */
00554 
00555 #if defined(MBEDTLS_BLOWFISH_C)
00556     if( use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH) )
00557         mbedtls_snprintf( buf, buflen, "BLOWFISH - Invalid key length" );
00558     if( use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH) )
00559         mbedtls_snprintf( buf, buflen, "BLOWFISH - Invalid data input length" );
00560 #endif /* MBEDTLS_BLOWFISH_C */
00561 
00562 #if defined(MBEDTLS_CAMELLIA_C)
00563     if( use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH) )
00564         mbedtls_snprintf( buf, buflen, "CAMELLIA - Invalid key length" );
00565     if( use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH) )
00566         mbedtls_snprintf( buf, buflen, "CAMELLIA - Invalid data input length" );
00567 #endif /* MBEDTLS_CAMELLIA_C */
00568 
00569 #if defined(MBEDTLS_CCM_C)
00570     if( use_ret == -(MBEDTLS_ERR_CCM_BAD_INPUT) )
00571         mbedtls_snprintf( buf, buflen, "CCM - Bad input parameters to function" );
00572     if( use_ret == -(MBEDTLS_ERR_CCM_AUTH_FAILED) )
00573         mbedtls_snprintf( buf, buflen, "CCM - Authenticated decryption failed" );
00574 #endif /* MBEDTLS_CCM_C */
00575 
00576 #if defined(MBEDTLS_CTR_DRBG_C)
00577     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED) )
00578         mbedtls_snprintf( buf, buflen, "CTR_DRBG - The entropy source failed" );
00579     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG) )
00580         mbedtls_snprintf( buf, buflen, "CTR_DRBG - Too many random requested in single call" );
00581     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG) )
00582         mbedtls_snprintf( buf, buflen, "CTR_DRBG - Input too large (Entropy + additional)" );
00583     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR) )
00584         mbedtls_snprintf( buf, buflen, "CTR_DRBG - Read/write error in file" );
00585 #endif /* MBEDTLS_CTR_DRBG_C */
00586 
00587 #if defined(MBEDTLS_DES_C)
00588     if( use_ret == -(MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH) )
00589         mbedtls_snprintf( buf, buflen, "DES - The data input has an invalid length" );
00590 #endif /* MBEDTLS_DES_C */
00591 
00592 #if defined(MBEDTLS_ENTROPY_C)
00593     if( use_ret == -(MBEDTLS_ERR_ENTROPY_SOURCE_FAILED) )
00594         mbedtls_snprintf( buf, buflen, "ENTROPY - Critical entropy source failure" );
00595     if( use_ret == -(MBEDTLS_ERR_ENTROPY_MAX_SOURCES) )
00596         mbedtls_snprintf( buf, buflen, "ENTROPY - No more sources can be added" );
00597     if( use_ret == -(MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED) )
00598         mbedtls_snprintf( buf, buflen, "ENTROPY - No sources have been added to poll" );
00599     if( use_ret == -(MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE) )
00600         mbedtls_snprintf( buf, buflen, "ENTROPY - No strong sources have been added to poll" );
00601     if( use_ret == -(MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR) )
00602         mbedtls_snprintf( buf, buflen, "ENTROPY - Read/write error in file" );
00603 #endif /* MBEDTLS_ENTROPY_C */
00604 
00605 #if defined(MBEDTLS_GCM_C)
00606     if( use_ret == -(MBEDTLS_ERR_GCM_AUTH_FAILED) )
00607         mbedtls_snprintf( buf, buflen, "GCM - Authenticated decryption failed" );
00608     if( use_ret == -(MBEDTLS_ERR_GCM_BAD_INPUT) )
00609         mbedtls_snprintf( buf, buflen, "GCM - Bad input parameters to function" );
00610 #endif /* MBEDTLS_GCM_C */
00611 
00612 #if defined(MBEDTLS_HMAC_DRBG_C)
00613     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG) )
00614         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - Too many random requested in single call" );
00615     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG) )
00616         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - Input too large (Entropy + additional)" );
00617     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR) )
00618         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - Read/write error in file" );
00619     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED) )
00620         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - The entropy source failed" );
00621 #endif /* MBEDTLS_HMAC_DRBG_C */
00622 
00623 #if defined(MBEDTLS_NET_C)
00624     if( use_ret == -(MBEDTLS_ERR_NET_SOCKET_FAILED) )
00625         mbedtls_snprintf( buf, buflen, "NET - Failed to open a socket" );
00626     if( use_ret == -(MBEDTLS_ERR_NET_CONNECT_FAILED) )
00627         mbedtls_snprintf( buf, buflen, "NET - The connection to the given server / port failed" );
00628     if( use_ret == -(MBEDTLS_ERR_NET_BIND_FAILED) )
00629         mbedtls_snprintf( buf, buflen, "NET - Binding of the socket failed" );
00630     if( use_ret == -(MBEDTLS_ERR_NET_LISTEN_FAILED) )
00631         mbedtls_snprintf( buf, buflen, "NET - Could not listen on the socket" );
00632     if( use_ret == -(MBEDTLS_ERR_NET_ACCEPT_FAILED) )
00633         mbedtls_snprintf( buf, buflen, "NET - Could not accept the incoming connection" );
00634     if( use_ret == -(MBEDTLS_ERR_NET_RECV_FAILED) )
00635         mbedtls_snprintf( buf, buflen, "NET - Reading information from the socket failed" );
00636     if( use_ret == -(MBEDTLS_ERR_NET_SEND_FAILED) )
00637         mbedtls_snprintf( buf, buflen, "NET - Sending information through the socket failed" );
00638     if( use_ret == -(MBEDTLS_ERR_NET_CONN_RESET) )
00639         mbedtls_snprintf( buf, buflen, "NET - Connection was reset by peer" );
00640     if( use_ret == -(MBEDTLS_ERR_NET_UNKNOWN_HOST) )
00641         mbedtls_snprintf( buf, buflen, "NET - Failed to get an IP address for the given hostname" );
00642     if( use_ret == -(MBEDTLS_ERR_NET_BUFFER_TOO_SMALL) )
00643         mbedtls_snprintf( buf, buflen, "NET - Buffer is too small to hold the data" );
00644     if( use_ret == -(MBEDTLS_ERR_NET_INVALID_CONTEXT) )
00645         mbedtls_snprintf( buf, buflen, "NET - The context is invalid, eg because it was free()ed" );
00646 #endif /* MBEDTLS_NET_C */
00647 
00648 #if defined(MBEDTLS_OID_C)
00649     if( use_ret == -(MBEDTLS_ERR_OID_NOT_FOUND) )
00650         mbedtls_snprintf( buf, buflen, "OID - OID is not found" );
00651     if( use_ret == -(MBEDTLS_ERR_OID_BUF_TOO_SMALL) )
00652         mbedtls_snprintf( buf, buflen, "OID - output buffer is too small" );
00653 #endif /* MBEDTLS_OID_C */
00654 
00655 #if defined(MBEDTLS_PADLOCK_C)
00656     if( use_ret == -(MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED) )
00657         mbedtls_snprintf( buf, buflen, "PADLOCK - Input data should be aligned" );
00658 #endif /* MBEDTLS_PADLOCK_C */
00659 
00660 #if defined(MBEDTLS_THREADING_C)
00661     if( use_ret == -(MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE) )
00662         mbedtls_snprintf( buf, buflen, "THREADING - The selected feature is not available" );
00663     if( use_ret == -(MBEDTLS_ERR_THREADING_BAD_INPUT_DATA) )
00664         mbedtls_snprintf( buf, buflen, "THREADING - Bad input parameters to function" );
00665     if( use_ret == -(MBEDTLS_ERR_THREADING_MUTEX_ERROR) )
00666         mbedtls_snprintf( buf, buflen, "THREADING - Locking / unlocking / free failed with error code" );
00667 #endif /* MBEDTLS_THREADING_C */
00668 
00669 #if defined(MBEDTLS_XTEA_C)
00670     if( use_ret == -(MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH) )
00671         mbedtls_snprintf( buf, buflen, "XTEA - The data input has an invalid length" );
00672 #endif /* MBEDTLS_XTEA_C */
00673     // END generated code
00674 
00675     if( strlen( buf ) != 0 )
00676         return;
00677 
00678     mbedtls_snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
00679 }
00680 
00681 #else /* MBEDTLS_ERROR_C */
00682 
00683 #if defined(MBEDTLS_ERROR_STRERROR_DUMMY)
00684 
00685 /*
00686  * Provide an non-function in case MBEDTLS_ERROR_C is not defined
00687  */
00688 void mbedtls_strerror( int ret, char *buf, size_t buflen )
00689 {
00690     ((void) ret);
00691 
00692     if( buflen > 0 )
00693         buf[0] = '\0';
00694 }
00695 
00696 #endif /* MBEDTLS_ERROR_STRERROR_DUMMY */
00697 
00698 #endif /* MBEDTLS_ERROR_C */