reactos/dll/3rdparty/mbedtls/error.c

   1 /*
   2  *  Error message information
   3  *
   4  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   5  *  SPDX-License-Identifier: Apache-2.0
   6  *
   7  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
   8  *  not use this file except in compliance with the License.
   9  *  You may obtain a copy of the License at
  10  *
  11  *  http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  *  Unless required by applicable law or agreed to in writing, software
  14  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  15  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  *  See the License for the specific language governing permissions and
  17  *  limitations under the License.
  18  *
  19  *  This file is part of mbed TLS (https://tls.mbed.org)
  20  */
  21
  22 #if !defined(MBEDTLS_CONFIG_FILE)
  23 #include "mbedtls/config.h"
  24 #else
  25 #include MBEDTLS_CONFIG_FILE
  26 #endif
  27
  28 #if defined(MBEDTLS_ERROR_C) || defined(MBEDTLS_ERROR_STRERROR_DUMMY)
  29 #include "mbedtls/error.h"
  30 #include <string.h>
  31 #endif
  32
  33 #if defined(MBEDTLS_PLATFORM_C)
  34 #include "mbedtls/platform.h"
  35 #else
  36 #define mbedtls_snprintf snprintf
  37 #endif
  38
  39 #if defined(MBEDTLS_ERROR_C)
  40
  41 #include <stdio.h>
  42
  43 #if defined(MBEDTLS_AES_C)
  44 #include "mbedtls/aes.h"
  45 #endif
  46
  47 #if defined(MBEDTLS_BASE64_C)
  48 #include "mbedtls/base64.h"
  49 #endif
  50
  51 #if defined(MBEDTLS_BIGNUM_C)
  52 #include "mbedtls/bignum.h"
  53 #endif
  54
  55 #if defined(MBEDTLS_BLOWFISH_C)
  56 #include "mbedtls/blowfish.h"
  57 #endif
  58
  59 #if defined(MBEDTLS_CAMELLIA_C)
  60 #include "mbedtls/camellia.h"
  61 #endif
  62
  63 #if defined(MBEDTLS_CCM_C)
  64 #include "mbedtls/ccm.h"
  65 #endif
  66
  67 #if defined(MBEDTLS_CIPHER_C)
  68 #include "mbedtls/cipher.h"
  69 #endif
  70
  71 #if defined(MBEDTLS_CTR_DRBG_C)
  72 #include "mbedtls/ctr_drbg.h"
  73 #endif
  74
  75 #if defined(MBEDTLS_DES_C)
  76 #include "mbedtls/des.h"
  77 #endif
  78
  79 #if defined(MBEDTLS_DHM_C)
  80 #include "mbedtls/dhm.h"
  81 #endif
  82
  83 #if defined(MBEDTLS_ECP_C)
  84 #include "mbedtls/ecp.h"
  85 #endif
  86
  87 #if defined(MBEDTLS_ENTROPY_C)
  88 #include "mbedtls/entropy.h"
  89 #endif
  90
  91 #if defined(MBEDTLS_GCM_C)
  92 #include "mbedtls/gcm.h"
  93 #endif
  94
  95 #if defined(MBEDTLS_HMAC_DRBG_C)
  96 #include "mbedtls/hmac_drbg.h"
  97 #endif
  98
  99 #if defined(MBEDTLS_MD_C)
 100 #include "mbedtls/md.h"
 101 #endif
 102
 103 #if defined(MBEDTLS_NET_C)
 104 #include "mbedtls/net.h"
 105 #endif
 106
 107 #if defined(MBEDTLS_OID_C)
 108 #include "mbedtls/oid.h"
 109 #endif
 110
 111 #if defined(MBEDTLS_PADLOCK_C)
 112 #include "mbedtls/padlock.h"
 113 #endif
 114
 115 #if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
 116 #include "mbedtls/pem.h"
 117 #endif
 118
 119 #if defined(MBEDTLS_PK_C)
 120 #include "mbedtls/pk.h"
 121 #endif
 122
 123 #if defined(MBEDTLS_PKCS12_C)
 124 #include "mbedtls/pkcs12.h"
 125 #endif
 126
 127 #if defined(MBEDTLS_PKCS5_C)
 128 #include "mbedtls/pkcs5.h"
 129 #endif
 130
 131 #if defined(MBEDTLS_RSA_C)
 132 #include "mbedtls/rsa.h"
 133 #endif
 134
 135 #if defined(MBEDTLS_SSL_TLS_C)
 136 #include "mbedtls/ssl.h"
 137 #endif
 138
 139 #if defined(MBEDTLS_THREADING_C)
 140 #include "mbedtls/threading.h"
 141 #endif
 142
 143 #if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
 144 #include "mbedtls/x509.h"
 145 #endif
 146
 147 #if defined(MBEDTLS_XTEA_C)
 148 #include "mbedtls/xtea.h"
 149 #endif
 150
 151
 152 void mbedtls_strerror( int ret, char *buf, size_t buflen )
 153 {
 154     size_t len;
 155     int use_ret;
 156
 157     if( buflen == 0 )
 158         return;
 159
 160     memset( buf, 0x00, buflen );
 161
 162     if( ret < 0 )
 163         ret = -ret;
 164
 165     if( ret & 0xFF80 )
 166     {
 167         use_ret = ret & 0xFF80;
 168
 169         // High level error codes
 170         //
 171         // BEGIN generated code
 172 #if defined(MBEDTLS_CIPHER_C)
 173         if( use_ret == -(MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE) )
 174             mbedtls_snprintf( buf, buflen, "CIPHER - The selected feature is not available" );
 175         if( use_ret == -(MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA) )
 176             mbedtls_snprintf( buf, buflen, "CIPHER - Bad input parameters to function" );
 177         if( use_ret == -(MBEDTLS_ERR_CIPHER_ALLOC_FAILED) )
 178             mbedtls_snprintf( buf, buflen, "CIPHER - Failed to allocate memory" );
 179         if( use_ret == -(MBEDTLS_ERR_CIPHER_INVALID_PADDING) )
 180             mbedtls_snprintf( buf, buflen, "CIPHER - Input data contains invalid padding and is rejected" );
 181         if( use_ret == -(MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED) )
 182             mbedtls_snprintf( buf, buflen, "CIPHER - Decryption of block requires a full block" );
 183         if( use_ret == -(MBEDTLS_ERR_CIPHER_AUTH_FAILED) )
 184             mbedtls_snprintf( buf, buflen, "CIPHER - Authentication failed (for AEAD modes)" );
 185 #endif /* MBEDTLS_CIPHER_C */
 186
 187 #if defined(MBEDTLS_DHM_C)
 188         if( use_ret == -(MBEDTLS_ERR_DHM_BAD_INPUT_DATA) )
 189             mbedtls_snprintf( buf, buflen, "DHM - Bad input parameters to function" );
 190         if( use_ret == -(MBEDTLS_ERR_DHM_READ_PARAMS_FAILED) )
 191             mbedtls_snprintf( buf, buflen, "DHM - Reading of the DHM parameters failed" );
 192         if( use_ret == -(MBEDTLS_ERR_DHM_MAKE_PARAMS_FAILED) )
 193             mbedtls_snprintf( buf, buflen, "DHM - Making of the DHM parameters failed" );
 194         if( use_ret == -(MBEDTLS_ERR_DHM_READ_PUBLIC_FAILED) )
 195             mbedtls_snprintf( buf, buflen, "DHM - Reading of the public values failed" );
 196         if( use_ret == -(MBEDTLS_ERR_DHM_MAKE_PUBLIC_FAILED) )
 197             mbedtls_snprintf( buf, buflen, "DHM - Making of the public value failed" );
 198         if( use_ret == -(MBEDTLS_ERR_DHM_CALC_SECRET_FAILED) )
 199             mbedtls_snprintf( buf, buflen, "DHM - Calculation of the DHM secret failed" );
 200         if( use_ret == -(MBEDTLS_ERR_DHM_INVALID_FORMAT) )
 201             mbedtls_snprintf( buf, buflen, "DHM - The ASN.1 data is not formatted correctly" );
 202         if( use_ret == -(MBEDTLS_ERR_DHM_ALLOC_FAILED) )
 203             mbedtls_snprintf( buf, buflen, "DHM - Allocation of memory failed" );
 204         if( use_ret == -(MBEDTLS_ERR_DHM_FILE_IO_ERROR) )
 205             mbedtls_snprintf( buf, buflen, "DHM - Read/write of file failed" );
 206 #endif /* MBEDTLS_DHM_C */
 207
 208 #if defined(MBEDTLS_ECP_C)
 209         if( use_ret == -(MBEDTLS_ERR_ECP_BAD_INPUT_DATA) )
 210             mbedtls_snprintf( buf, buflen, "ECP - Bad input parameters to function" );
 211         if( use_ret == -(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL) )
 212             mbedtls_snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
 213         if( use_ret == -(MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE) )
 214             mbedtls_snprintf( buf, buflen, "ECP - Requested curve not available" );
 215         if( use_ret == -(MBEDTLS_ERR_ECP_VERIFY_FAILED) )
 216             mbedtls_snprintf( buf, buflen, "ECP - The signature is not valid" );
 217         if( use_ret == -(MBEDTLS_ERR_ECP_ALLOC_FAILED) )
 218             mbedtls_snprintf( buf, buflen, "ECP - Memory allocation failed" );
 219         if( use_ret == -(MBEDTLS_ERR_ECP_RANDOM_FAILED) )
 220             mbedtls_snprintf( buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed" );
 221         if( use_ret == -(MBEDTLS_ERR_ECP_INVALID_KEY) )
 222             mbedtls_snprintf( buf, buflen, "ECP - Invalid private or public key" );
 223         if( use_ret == -(MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH) )
 224             mbedtls_snprintf( buf, buflen, "ECP - Signature is valid but shorter than the user-supplied length" );
 225 #endif /* MBEDTLS_ECP_C */
 226
 227 #if defined(MBEDTLS_MD_C)
 228         if( use_ret == -(MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE) )
 229             mbedtls_snprintf( buf, buflen, "MD - The selected feature is not available" );
 230         if( use_ret == -(MBEDTLS_ERR_MD_BAD_INPUT_DATA) )
 231             mbedtls_snprintf( buf, buflen, "MD - Bad input parameters to function" );
 232         if( use_ret == -(MBEDTLS_ERR_MD_ALLOC_FAILED) )
 233             mbedtls_snprintf( buf, buflen, "MD - Failed to allocate memory" );
 234         if( use_ret == -(MBEDTLS_ERR_MD_FILE_IO_ERROR) )
 235             mbedtls_snprintf( buf, buflen, "MD - Opening or reading of file failed" );
 236 #endif /* MBEDTLS_MD_C */
 237
 238 #if defined(MBEDTLS_PEM_PARSE_C) || defined(MBEDTLS_PEM_WRITE_C)
 239         if( use_ret == -(MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT) )
 240             mbedtls_snprintf( buf, buflen, "PEM - No PEM header or footer found" );
 241         if( use_ret == -(MBEDTLS_ERR_PEM_INVALID_DATA) )
 242             mbedtls_snprintf( buf, buflen, "PEM - PEM string is not as expected" );
 243         if( use_ret == -(MBEDTLS_ERR_PEM_ALLOC_FAILED) )
 244             mbedtls_snprintf( buf, buflen, "PEM - Failed to allocate memory" );
 245         if( use_ret == -(MBEDTLS_ERR_PEM_INVALID_ENC_IV) )
 246             mbedtls_snprintf( buf, buflen, "PEM - RSA IV is not in hex-format" );
 247         if( use_ret == -(MBEDTLS_ERR_PEM_UNKNOWN_ENC_ALG) )
 248             mbedtls_snprintf( buf, buflen, "PEM - Unsupported key encryption algorithm" );
 249         if( use_ret == -(MBEDTLS_ERR_PEM_PASSWORD_REQUIRED) )
 250             mbedtls_snprintf( buf, buflen, "PEM - Private key password can't be empty" );
 251         if( use_ret == -(MBEDTLS_ERR_PEM_PASSWORD_MISMATCH) )
 252             mbedtls_snprintf( buf, buflen, "PEM - Given private key password does not allow for correct decryption" );
 253         if( use_ret == -(MBEDTLS_ERR_PEM_FEATURE_UNAVAILABLE) )
 254             mbedtls_snprintf( buf, buflen, "PEM - Unavailable feature, e.g. hashing/encryption combination" );
 255         if( use_ret == -(MBEDTLS_ERR_PEM_BAD_INPUT_DATA) )
 256             mbedtls_snprintf( buf, buflen, "PEM - Bad input parameters to function" );
 257 #endif /* MBEDTLS_PEM_PARSE_C || MBEDTLS_PEM_WRITE_C */
 258
 259 #if defined(MBEDTLS_PK_C)
 260         if( use_ret == -(MBEDTLS_ERR_PK_ALLOC_FAILED) )
 261             mbedtls_snprintf( buf, buflen, "PK - Memory allocation failed" );
 262         if( use_ret == -(MBEDTLS_ERR_PK_TYPE_MISMATCH) )
 263             mbedtls_snprintf( buf, buflen, "PK - Type mismatch, eg attempt to encrypt with an ECDSA key" );
 264         if( use_ret == -(MBEDTLS_ERR_PK_BAD_INPUT_DATA) )
 265             mbedtls_snprintf( buf, buflen, "PK - Bad input parameters to function" );
 266         if( use_ret == -(MBEDTLS_ERR_PK_FILE_IO_ERROR) )
 267             mbedtls_snprintf( buf, buflen, "PK - Read/write of file failed" );
 268         if( use_ret == -(MBEDTLS_ERR_PK_KEY_INVALID_VERSION) )
 269             mbedtls_snprintf( buf, buflen, "PK - Unsupported key version" );
 270         if( use_ret == -(MBEDTLS_ERR_PK_KEY_INVALID_FORMAT) )
 271             mbedtls_snprintf( buf, buflen, "PK - Invalid key tag or value" );
 272         if( use_ret == -(MBEDTLS_ERR_PK_UNKNOWN_PK_ALG) )
 273             mbedtls_snprintf( buf, buflen, "PK - Key algorithm is unsupported (only RSA and EC are supported)" );
 274         if( use_ret == -(MBEDTLS_ERR_PK_PASSWORD_REQUIRED) )
 275             mbedtls_snprintf( buf, buflen, "PK - Private key password can't be empty" );
 276         if( use_ret == -(MBEDTLS_ERR_PK_PASSWORD_MISMATCH) )
 277             mbedtls_snprintf( buf, buflen, "PK - Given private key password does not allow for correct decryption" );
 278         if( use_ret == -(MBEDTLS_ERR_PK_INVALID_PUBKEY) )
 279             mbedtls_snprintf( buf, buflen, "PK - The pubkey tag or value is invalid (only RSA and EC are supported)" );
 280         if( use_ret == -(MBEDTLS_ERR_PK_INVALID_ALG) )
 281             mbedtls_snprintf( buf, buflen, "PK - The algorithm tag or value is invalid" );
 282         if( use_ret == -(MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE) )
 283             mbedtls_snprintf( buf, buflen, "PK - Elliptic curve is unsupported (only NIST curves are supported)" );
 284         if( use_ret == -(MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE) )
 285             mbedtls_snprintf( buf, buflen, "PK - Unavailable feature, e.g. RSA disabled for RSA key" );
 286         if( use_ret == -(MBEDTLS_ERR_PK_SIG_LEN_MISMATCH) )
 287             mbedtls_snprintf( buf, buflen, "PK - The signature is valid but its length is less than expected" );
 288 #endif /* MBEDTLS_PK_C */
 289
 290 #if defined(MBEDTLS_PKCS12_C)
 291         if( use_ret == -(MBEDTLS_ERR_PKCS12_BAD_INPUT_DATA) )
 292             mbedtls_snprintf( buf, buflen, "PKCS12 - Bad input parameters to function" );
 293         if( use_ret == -(MBEDTLS_ERR_PKCS12_FEATURE_UNAVAILABLE) )
 294             mbedtls_snprintf( buf, buflen, "PKCS12 - Feature not available, e.g. unsupported encryption scheme" );
 295         if( use_ret == -(MBEDTLS_ERR_PKCS12_PBE_INVALID_FORMAT) )
 296             mbedtls_snprintf( buf, buflen, "PKCS12 - PBE ASN.1 data not as expected" );
 297         if( use_ret == -(MBEDTLS_ERR_PKCS12_PASSWORD_MISMATCH) )
 298             mbedtls_snprintf( buf, buflen, "PKCS12 - Given private key password does not allow for correct decryption" );
 299 #endif /* MBEDTLS_PKCS12_C */
 300
 301 #if defined(MBEDTLS_PKCS5_C)
 302         if( use_ret == -(MBEDTLS_ERR_PKCS5_BAD_INPUT_DATA) )
 303             mbedtls_snprintf( buf, buflen, "PKCS5 - Bad input parameters to function" );
 304         if( use_ret == -(MBEDTLS_ERR_PKCS5_INVALID_FORMAT) )
 305             mbedtls_snprintf( buf, buflen, "PKCS5 - Unexpected ASN.1 data" );
 306         if( use_ret == -(MBEDTLS_ERR_PKCS5_FEATURE_UNAVAILABLE) )
 307             mbedtls_snprintf( buf, buflen, "PKCS5 - Requested encryption or digest alg not available" );
 308         if( use_ret == -(MBEDTLS_ERR_PKCS5_PASSWORD_MISMATCH) )
 309             mbedtls_snprintf( buf, buflen, "PKCS5 - Given private key password does not allow for correct decryption" );
 310 #endif /* MBEDTLS_PKCS5_C */
 311
 312 #if defined(MBEDTLS_RSA_C)
 313         if( use_ret == -(MBEDTLS_ERR_RSA_BAD_INPUT_DATA) )
 314             mbedtls_snprintf( buf, buflen, "RSA - Bad input parameters to function" );
 315         if( use_ret == -(MBEDTLS_ERR_RSA_INVALID_PADDING) )
 316             mbedtls_snprintf( buf, buflen, "RSA - Input data contains invalid padding and is rejected" );
 317         if( use_ret == -(MBEDTLS_ERR_RSA_KEY_GEN_FAILED) )
 318             mbedtls_snprintf( buf, buflen, "RSA - Something failed during generation of a key" );
 319         if( use_ret == -(MBEDTLS_ERR_RSA_KEY_CHECK_FAILED) )
 320             mbedtls_snprintf( buf, buflen, "RSA - Key failed to pass the library's validity check" );
 321         if( use_ret == -(MBEDTLS_ERR_RSA_PUBLIC_FAILED) )
 322             mbedtls_snprintf( buf, buflen, "RSA - The public key operation failed" );
 323         if( use_ret == -(MBEDTLS_ERR_RSA_PRIVATE_FAILED) )
 324             mbedtls_snprintf( buf, buflen, "RSA - The private key operation failed" );
 325         if( use_ret == -(MBEDTLS_ERR_RSA_VERIFY_FAILED) )
 326             mbedtls_snprintf( buf, buflen, "RSA - The PKCS#1 verification failed" );
 327         if( use_ret == -(MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE) )
 328             mbedtls_snprintf( buf, buflen, "RSA - The output buffer for decryption is not large enough" );
 329         if( use_ret == -(MBEDTLS_ERR_RSA_RNG_FAILED) )
 330             mbedtls_snprintf( buf, buflen, "RSA - The random generator failed to generate non-zeros" );
 331 #endif /* MBEDTLS_RSA_C */
 332
 333 #if defined(MBEDTLS_SSL_TLS_C)
 334         if( use_ret == -(MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE) )
 335             mbedtls_snprintf( buf, buflen, "SSL - The requested feature is not available" );
 336         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_INPUT_DATA) )
 337             mbedtls_snprintf( buf, buflen, "SSL - Bad input parameters to function" );
 338         if( use_ret == -(MBEDTLS_ERR_SSL_INVALID_MAC) )
 339             mbedtls_snprintf( buf, buflen, "SSL - Verification of the message MAC failed" );
 340         if( use_ret == -(MBEDTLS_ERR_SSL_INVALID_RECORD) )
 341             mbedtls_snprintf( buf, buflen, "SSL - An invalid SSL record was received" );
 342         if( use_ret == -(MBEDTLS_ERR_SSL_CONN_EOF) )
 343             mbedtls_snprintf( buf, buflen, "SSL - The connection indicated an EOF" );
 344         if( use_ret == -(MBEDTLS_ERR_SSL_UNKNOWN_CIPHER) )
 345             mbedtls_snprintf( buf, buflen, "SSL - An unknown cipher was received" );
 346         if( use_ret == -(MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN) )
 347             mbedtls_snprintf( buf, buflen, "SSL - The server has no ciphersuites in common with the client" );
 348         if( use_ret == -(MBEDTLS_ERR_SSL_NO_RNG) )
 349             mbedtls_snprintf( buf, buflen, "SSL - No RNG was provided to the SSL module" );
 350         if( use_ret == -(MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE) )
 351             mbedtls_snprintf( buf, buflen, "SSL - No client certification received from the client, but required by the authentication mode" );
 352         if( use_ret == -(MBEDTLS_ERR_SSL_CERTIFICATE_TOO_LARGE) )
 353             mbedtls_snprintf( buf, buflen, "SSL - Our own certificate(s) is/are too large to send in an SSL message" );
 354         if( use_ret == -(MBEDTLS_ERR_SSL_CERTIFICATE_REQUIRED) )
 355             mbedtls_snprintf( buf, buflen, "SSL - The own certificate is not set, but needed by the server" );
 356         if( use_ret == -(MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED) )
 357             mbedtls_snprintf( buf, buflen, "SSL - The own private key or pre-shared key is not set, but needed" );
 358         if( use_ret == -(MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED) )
 359             mbedtls_snprintf( buf, buflen, "SSL - No CA Chain is set, but required to operate" );
 360         if( use_ret == -(MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE) )
 361             mbedtls_snprintf( buf, buflen, "SSL - An unexpected message was received from our peer" );
 362         if( use_ret == -(MBEDTLS_ERR_SSL_FATAL_ALERT_MESSAGE) )
 363         {
 364             mbedtls_snprintf( buf, buflen, "SSL - A fatal alert message was received from our peer" );
 365             return;
 366         }
 367         if( use_ret == -(MBEDTLS_ERR_SSL_PEER_VERIFY_FAILED) )
 368             mbedtls_snprintf( buf, buflen, "SSL - Verification of our peer failed" );
 369         if( use_ret == -(MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) )
 370             mbedtls_snprintf( buf, buflen, "SSL - The peer notified us that the connection is going to be closed" );
 371         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO) )
 372             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientHello handshake message failed" );
 373         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO) )
 374             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ServerHello handshake message failed" );
 375         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE) )
 376             mbedtls_snprintf( buf, buflen, "SSL - Processing of the Certificate handshake message failed" );
 377         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST) )
 378             mbedtls_snprintf( buf, buflen, "SSL - Processing of the CertificateRequest handshake message failed" );
 379         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE) )
 380             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ServerKeyExchange handshake message failed" );
 381         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO_DONE) )
 382             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ServerHelloDone handshake message failed" );
 383         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE) )
 384             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed" );
 385         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP) )
 386             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Read Public" );
 387         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS) )
 388             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Calculate Secret" );
 389         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY) )
 390             mbedtls_snprintf( buf, buflen, "SSL - Processing of the CertificateVerify handshake message failed" );
 391         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC) )
 392             mbedtls_snprintf( buf, buflen, "SSL - Processing of the ChangeCipherSpec handshake message failed" );
 393         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_FINISHED) )
 394             mbedtls_snprintf( buf, buflen, "SSL - Processing of the Finished handshake message failed" );
 395         if( use_ret == -(MBEDTLS_ERR_SSL_ALLOC_FAILED) )
 396             mbedtls_snprintf( buf, buflen, "SSL - Memory allocation failed" );
 397         if( use_ret == -(MBEDTLS_ERR_SSL_HW_ACCEL_FAILED) )
 398             mbedtls_snprintf( buf, buflen, "SSL - Hardware acceleration function returned with error" );
 399         if( use_ret == -(MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH) )
 400             mbedtls_snprintf( buf, buflen, "SSL - Hardware acceleration function skipped / left alone data" );
 401         if( use_ret == -(MBEDTLS_ERR_SSL_COMPRESSION_FAILED) )
 402             mbedtls_snprintf( buf, buflen, "SSL - Processing of the compression / decompression failed" );
 403         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION) )
 404             mbedtls_snprintf( buf, buflen, "SSL - Handshake protocol not within min/max boundaries" );
 405         if( use_ret == -(MBEDTLS_ERR_SSL_BAD_HS_NEW_SESSION_TICKET) )
 406             mbedtls_snprintf( buf, buflen, "SSL - Processing of the NewSessionTicket handshake message failed" );
 407         if( use_ret == -(MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED) )
 408             mbedtls_snprintf( buf, buflen, "SSL - Session ticket has expired" );
 409         if( use_ret == -(MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH) )
 410             mbedtls_snprintf( buf, buflen, "SSL - Public key type mismatch (eg, asked for RSA key exchange and presented EC key)" );
 411         if( use_ret == -(MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY) )
 412             mbedtls_snprintf( buf, buflen, "SSL - Unknown identity received (eg, PSK identity)" );
 413         if( use_ret == -(MBEDTLS_ERR_SSL_INTERNAL_ERROR) )
 414             mbedtls_snprintf( buf, buflen, "SSL - Internal error (eg, unexpected failure in lower-level module)" );
 415         if( use_ret == -(MBEDTLS_ERR_SSL_COUNTER_WRAPPING) )
 416             mbedtls_snprintf( buf, buflen, "SSL - A counter would wrap (eg, too many messages exchanged)" );
 417         if( use_ret == -(MBEDTLS_ERR_SSL_WAITING_SERVER_HELLO_RENEGO) )
 418             mbedtls_snprintf( buf, buflen, "SSL - Unexpected message at ServerHello in renegotiation" );
 419         if( use_ret == -(MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED) )
 420             mbedtls_snprintf( buf, buflen, "SSL - DTLS client must retry for hello verification" );
 421         if( use_ret == -(MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL) )
 422             mbedtls_snprintf( buf, buflen, "SSL - A buffer is too small to receive or write a message" );
 423         if( use_ret == -(MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE) )
 424             mbedtls_snprintf( buf, buflen, "SSL - None of the common ciphersuites is usable (eg, no suitable certificate, see debug messages)" );
 425         if( use_ret == -(MBEDTLS_ERR_SSL_WANT_READ) )
 426             mbedtls_snprintf( buf, buflen, "SSL - Connection requires a read call" );
 427         if( use_ret == -(MBEDTLS_ERR_SSL_WANT_WRITE) )
 428             mbedtls_snprintf( buf, buflen, "SSL - Connection requires a write call" );
 429         if( use_ret == -(MBEDTLS_ERR_SSL_TIMEOUT) )
 430             mbedtls_snprintf( buf, buflen, "SSL - The operation timed out" );
 431         if( use_ret == -(MBEDTLS_ERR_SSL_CLIENT_RECONNECT) )
 432             mbedtls_snprintf( buf, buflen, "SSL - The client initiated a reconnect from the same port" );
 433         if( use_ret == -(MBEDTLS_ERR_SSL_UNEXPECTED_RECORD) )
 434             mbedtls_snprintf( buf, buflen, "SSL - Record header looks valid but is not expected" );
 435 #endif /* MBEDTLS_SSL_TLS_C */
 436
 437 #if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)
 438         if( use_ret == -(MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE) )
 439             mbedtls_snprintf( buf, buflen, "X509 - Unavailable feature, e.g. RSA hashing/encryption combination" );
 440         if( use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_OID) )
 441             mbedtls_snprintf( buf, buflen, "X509 - Requested OID is unknown" );
 442         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_FORMAT) )
 443             mbedtls_snprintf( buf, buflen, "X509 - The CRT/CRL/CSR format is invalid, e.g. different type expected" );
 444         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_VERSION) )
 445             mbedtls_snprintf( buf, buflen, "X509 - The CRT/CRL/CSR version element is invalid" );
 446         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_SERIAL) )
 447             mbedtls_snprintf( buf, buflen, "X509 - The serial tag or value is invalid" );
 448         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_ALG) )
 449             mbedtls_snprintf( buf, buflen, "X509 - The algorithm tag or value is invalid" );
 450         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_NAME) )
 451             mbedtls_snprintf( buf, buflen, "X509 - The name tag or value is invalid" );
 452         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_DATE) )
 453             mbedtls_snprintf( buf, buflen, "X509 - The date tag or value is invalid" );
 454         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_SIGNATURE) )
 455             mbedtls_snprintf( buf, buflen, "X509 - The signature tag or value invalid" );
 456         if( use_ret == -(MBEDTLS_ERR_X509_INVALID_EXTENSIONS) )
 457             mbedtls_snprintf( buf, buflen, "X509 - The extension tag or value is invalid" );
 458         if( use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_VERSION) )
 459             mbedtls_snprintf( buf, buflen, "X509 - CRT/CRL/CSR has an unsupported version number" );
 460         if( use_ret == -(MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG) )
 461             mbedtls_snprintf( buf, buflen, "X509 - Signature algorithm (oid) is unsupported" );
 462         if( use_ret == -(MBEDTLS_ERR_X509_SIG_MISMATCH) )
 463             mbedtls_snprintf( buf, buflen, "X509 - Signature algorithms do not match. (see \\c ::mbedtls_x509_crt sig_oid)" );
 464         if( use_ret == -(MBEDTLS_ERR_X509_CERT_VERIFY_FAILED) )
 465             mbedtls_snprintf( buf, buflen, "X509 - Certificate verification failed, e.g. CRL, CA or signature check failed" );
 466         if( use_ret == -(MBEDTLS_ERR_X509_CERT_UNKNOWN_FORMAT) )
 467             mbedtls_snprintf( buf, buflen, "X509 - Format not recognized as DER or PEM" );
 468         if( use_ret == -(MBEDTLS_ERR_X509_BAD_INPUT_DATA) )
 469             mbedtls_snprintf( buf, buflen, "X509 - Input invalid" );
 470         if( use_ret == -(MBEDTLS_ERR_X509_ALLOC_FAILED) )
 471             mbedtls_snprintf( buf, buflen, "X509 - Allocation of memory failed" );
 472         if( use_ret == -(MBEDTLS_ERR_X509_FILE_IO_ERROR) )
 473             mbedtls_snprintf( buf, buflen, "X509 - Read/write of file failed" );
 474         if( use_ret == -(MBEDTLS_ERR_X509_BUFFER_TOO_SMALL) )
 475             mbedtls_snprintf( buf, buflen, "X509 - Destination buffer is too small" );
 476 #endif /* MBEDTLS_X509_USE_C || MBEDTLS_X509_CREATE_C */
 477         // END generated code
 478
 479         if( strlen( buf ) == 0 )
 480             mbedtls_snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
 481     }
 482
 483     use_ret = ret & ~0xFF80;
 484
 485     if( use_ret == 0 )
 486         return;
 487
 488     // If high level code is present, make a concatenation between both
 489     // error strings.
 490     //
 491     len = strlen( buf );
 492
 493     if( len > 0 )
 494     {
 495         if( buflen - len < 5 )
 496             return;
 497
 498         mbedtls_snprintf( buf + len, buflen - len, " : " );
 499
 500         buf += len + 3;
 501         buflen -= len + 3;
 502     }
 503
 504     // Low level error codes
 505     //
 506     // BEGIN generated code
 507 #if defined(MBEDTLS_AES_C)
 508     if( use_ret == -(MBEDTLS_ERR_AES_INVALID_KEY_LENGTH) )
 509         mbedtls_snprintf( buf, buflen, "AES - Invalid key length" );
 510     if( use_ret == -(MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH) )
 511         mbedtls_snprintf( buf, buflen, "AES - Invalid data input length" );
 512 #endif /* MBEDTLS_AES_C */
 513
 514 #if defined(MBEDTLS_ASN1_PARSE_C)
 515     if( use_ret == -(MBEDTLS_ERR_ASN1_OUT_OF_DATA) )
 516         mbedtls_snprintf( buf, buflen, "ASN1 - Out of data when parsing an ASN1 data structure" );
 517     if( use_ret == -(MBEDTLS_ERR_ASN1_UNEXPECTED_TAG) )
 518         mbedtls_snprintf( buf, buflen, "ASN1 - ASN1 tag was of an unexpected value" );
 519     if( use_ret == -(MBEDTLS_ERR_ASN1_INVALID_LENGTH) )
 520         mbedtls_snprintf( buf, buflen, "ASN1 - Error when trying to determine the length or invalid length" );
 521     if( use_ret == -(MBEDTLS_ERR_ASN1_LENGTH_MISMATCH) )
 522         mbedtls_snprintf( buf, buflen, "ASN1 - Actual length differs from expected length" );
 523     if( use_ret == -(MBEDTLS_ERR_ASN1_INVALID_DATA) )
 524         mbedtls_snprintf( buf, buflen, "ASN1 - Data is invalid. (not used)" );
 525     if( use_ret == -(MBEDTLS_ERR_ASN1_ALLOC_FAILED) )
 526         mbedtls_snprintf( buf, buflen, "ASN1 - Memory allocation failed" );
 527     if( use_ret == -(MBEDTLS_ERR_ASN1_BUF_TOO_SMALL) )
 528         mbedtls_snprintf( buf, buflen, "ASN1 - Buffer too small when writing ASN.1 data structure" );
 529 #endif /* MBEDTLS_ASN1_PARSE_C */
 530
 531 #if defined(MBEDTLS_BASE64_C)
 532     if( use_ret == -(MBEDTLS_ERR_BASE64_BUFFER_TOO_SMALL) )
 533         mbedtls_snprintf( buf, buflen, "BASE64 - Output buffer too small" );
 534     if( use_ret == -(MBEDTLS_ERR_BASE64_INVALID_CHARACTER) )
 535         mbedtls_snprintf( buf, buflen, "BASE64 - Invalid character in input" );
 536 #endif /* MBEDTLS_BASE64_C */
 537
 538 #if defined(MBEDTLS_BIGNUM_C)
 539     if( use_ret == -(MBEDTLS_ERR_MPI_FILE_IO_ERROR) )
 540         mbedtls_snprintf( buf, buflen, "BIGNUM - An error occurred while reading from or writing to a file" );
 541     if( use_ret == -(MBEDTLS_ERR_MPI_BAD_INPUT_DATA) )
 542         mbedtls_snprintf( buf, buflen, "BIGNUM - Bad input parameters to function" );
 543     if( use_ret == -(MBEDTLS_ERR_MPI_INVALID_CHARACTER) )
 544         mbedtls_snprintf( buf, buflen, "BIGNUM - There is an invalid character in the digit string" );
 545     if( use_ret == -(MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL) )
 546         mbedtls_snprintf( buf, buflen, "BIGNUM - The buffer is too small to write to" );
 547     if( use_ret == -(MBEDTLS_ERR_MPI_NEGATIVE_VALUE) )
 548         mbedtls_snprintf( buf, buflen, "BIGNUM - The input arguments are negative or result in illegal output" );
 549     if( use_ret == -(MBEDTLS_ERR_MPI_DIVISION_BY_ZERO) )
 550         mbedtls_snprintf( buf, buflen, "BIGNUM - The input argument for division is zero, which is not allowed" );
 551     if( use_ret == -(MBEDTLS_ERR_MPI_NOT_ACCEPTABLE) )
 552         mbedtls_snprintf( buf, buflen, "BIGNUM - The input arguments are not acceptable" );
 553     if( use_ret == -(MBEDTLS_ERR_MPI_ALLOC_FAILED) )
 554         mbedtls_snprintf( buf, buflen, "BIGNUM - Memory allocation failed" );
 555 #endif /* MBEDTLS_BIGNUM_C */
 556
 557 #if defined(MBEDTLS_BLOWFISH_C)
 558     if( use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH) )
 559         mbedtls_snprintf( buf, buflen, "BLOWFISH - Invalid key length" );
 560     if( use_ret == -(MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH) )
 561         mbedtls_snprintf( buf, buflen, "BLOWFISH - Invalid data input length" );
 562 #endif /* MBEDTLS_BLOWFISH_C */
 563
 564 #if defined(MBEDTLS_CAMELLIA_C)
 565     if( use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH) )
 566         mbedtls_snprintf( buf, buflen, "CAMELLIA - Invalid key length" );
 567     if( use_ret == -(MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH) )
 568         mbedtls_snprintf( buf, buflen, "CAMELLIA - Invalid data input length" );
 569 #endif /* MBEDTLS_CAMELLIA_C */
 570
 571 #if defined(MBEDTLS_CCM_C)
 572     if( use_ret == -(MBEDTLS_ERR_CCM_BAD_INPUT) )
 573         mbedtls_snprintf( buf, buflen, "CCM - Bad input parameters to function" );
 574     if( use_ret == -(MBEDTLS_ERR_CCM_AUTH_FAILED) )
 575         mbedtls_snprintf( buf, buflen, "CCM - Authenticated decryption failed" );
 576 #endif /* MBEDTLS_CCM_C */
 577
 578 #if defined(MBEDTLS_CTR_DRBG_C)
 579     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED) )
 580         mbedtls_snprintf( buf, buflen, "CTR_DRBG - The entropy source failed" );
 581     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG) )
 582         mbedtls_snprintf( buf, buflen, "CTR_DRBG - Too many random requested in single call" );
 583     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG) )
 584         mbedtls_snprintf( buf, buflen, "CTR_DRBG - Input too large (Entropy + additional)" );
 585     if( use_ret == -(MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR) )
 586         mbedtls_snprintf( buf, buflen, "CTR_DRBG - Read/write error in file" );
 587 #endif /* MBEDTLS_CTR_DRBG_C */
 588
 589 #if defined(MBEDTLS_DES_C)
 590     if( use_ret == -(MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH) )
 591         mbedtls_snprintf( buf, buflen, "DES - The data input has an invalid length" );
 592 #endif /* MBEDTLS_DES_C */
 593
 594 #if defined(MBEDTLS_ENTROPY_C)
 595     if( use_ret == -(MBEDTLS_ERR_ENTROPY_SOURCE_FAILED) )
 596         mbedtls_snprintf( buf, buflen, "ENTROPY - Critical entropy source failure" );
 597     if( use_ret == -(MBEDTLS_ERR_ENTROPY_MAX_SOURCES) )
 598         mbedtls_snprintf( buf, buflen, "ENTROPY - No more sources can be added" );
 599     if( use_ret == -(MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED) )
 600         mbedtls_snprintf( buf, buflen, "ENTROPY - No sources have been added to poll" );
 601     if( use_ret == -(MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE) )
 602         mbedtls_snprintf( buf, buflen, "ENTROPY - No strong sources have been added to poll" );
 603     if( use_ret == -(MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR) )
 604         mbedtls_snprintf( buf, buflen, "ENTROPY - Read/write error in file" );
 605 #endif /* MBEDTLS_ENTROPY_C */
 606
 607 #if defined(MBEDTLS_GCM_C)
 608     if( use_ret == -(MBEDTLS_ERR_GCM_AUTH_FAILED) )
 609         mbedtls_snprintf( buf, buflen, "GCM - Authenticated decryption failed" );
 610     if( use_ret == -(MBEDTLS_ERR_GCM_BAD_INPUT) )
 611         mbedtls_snprintf( buf, buflen, "GCM - Bad input parameters to function" );
 612 #endif /* MBEDTLS_GCM_C */
 613
 614 #if defined(MBEDTLS_HMAC_DRBG_C)
 615     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG) )
 616         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - Too many random requested in single call" );
 617     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG) )
 618         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - Input too large (Entropy + additional)" );
 619     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR) )
 620         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - Read/write error in file" );
 621     if( use_ret == -(MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED) )
 622         mbedtls_snprintf( buf, buflen, "HMAC_DRBG - The entropy source failed" );
 623 #endif /* MBEDTLS_HMAC_DRBG_C */
 624
 625 #if defined(MBEDTLS_NET_C)
 626     if( use_ret == -(MBEDTLS_ERR_NET_SOCKET_FAILED) )
 627         mbedtls_snprintf( buf, buflen, "NET - Failed to open a socket" );
 628     if( use_ret == -(MBEDTLS_ERR_NET_CONNECT_FAILED) )
 629         mbedtls_snprintf( buf, buflen, "NET - The connection to the given server / port failed" );
 630     if( use_ret == -(MBEDTLS_ERR_NET_BIND_FAILED) )
 631         mbedtls_snprintf( buf, buflen, "NET - Binding of the socket failed" );
 632     if( use_ret == -(MBEDTLS_ERR_NET_LISTEN_FAILED) )
 633         mbedtls_snprintf( buf, buflen, "NET - Could not listen on the socket" );
 634     if( use_ret == -(MBEDTLS_ERR_NET_ACCEPT_FAILED) )
 635         mbedtls_snprintf( buf, buflen, "NET - Could not accept the incoming connection" );
 636     if( use_ret == -(MBEDTLS_ERR_NET_RECV_FAILED) )
 637         mbedtls_snprintf( buf, buflen, "NET - Reading information from the socket failed" );
 638     if( use_ret == -(MBEDTLS_ERR_NET_SEND_FAILED) )
 639         mbedtls_snprintf( buf, buflen, "NET - Sending information through the socket failed" );
 640     if( use_ret == -(MBEDTLS_ERR_NET_CONN_RESET) )
 641         mbedtls_snprintf( buf, buflen, "NET - Connection was reset by peer" );
 642     if( use_ret == -(MBEDTLS_ERR_NET_UNKNOWN_HOST) )
 643         mbedtls_snprintf( buf, buflen, "NET - Failed to get an IP address for the given hostname" );
 644     if( use_ret == -(MBEDTLS_ERR_NET_BUFFER_TOO_SMALL) )
 645         mbedtls_snprintf( buf, buflen, "NET - Buffer is too small to hold the data" );
 646     if( use_ret == -(MBEDTLS_ERR_NET_INVALID_CONTEXT) )
 647         mbedtls_snprintf( buf, buflen, "NET - The context is invalid, eg because it was free()ed" );
 648 #endif /* MBEDTLS_NET_C */
 649
 650 #if defined(MBEDTLS_OID_C)
 651     if( use_ret == -(MBEDTLS_ERR_OID_NOT_FOUND) )
 652         mbedtls_snprintf( buf, buflen, "OID - OID is not found" );
 653     if( use_ret == -(MBEDTLS_ERR_OID_BUF_TOO_SMALL) )
 654         mbedtls_snprintf( buf, buflen, "OID - output buffer is too small" );
 655 #endif /* MBEDTLS_OID_C */
 656
 657 #if defined(MBEDTLS_PADLOCK_C)
 658     if( use_ret == -(MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED) )
 659         mbedtls_snprintf( buf, buflen, "PADLOCK - Input data should be aligned" );
 660 #endif /* MBEDTLS_PADLOCK_C */
 661
 662 #if defined(MBEDTLS_THREADING_C)
 663     if( use_ret == -(MBEDTLS_ERR_THREADING_FEATURE_UNAVAILABLE) )
 664         mbedtls_snprintf( buf, buflen, "THREADING - The selected feature is not available" );
 665     if( use_ret == -(MBEDTLS_ERR_THREADING_BAD_INPUT_DATA) )
 666         mbedtls_snprintf( buf, buflen, "THREADING - Bad input parameters to function" );
 667     if( use_ret == -(MBEDTLS_ERR_THREADING_MUTEX_ERROR) )
 668         mbedtls_snprintf( buf, buflen, "THREADING - Locking / unlocking / free failed with error code" );
 669 #endif /* MBEDTLS_THREADING_C */
 670
 671 #if defined(MBEDTLS_XTEA_C)
 672     if( use_ret == -(MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH) )
 673         mbedtls_snprintf( buf, buflen, "XTEA - The data input has an invalid length" );
 674 #endif /* MBEDTLS_XTEA_C */
 675     // END generated code
 676
 677     if( strlen( buf ) != 0 )
 678         return;
 679
 680     mbedtls_snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
 681 }
 682
 683 #else /* MBEDTLS_ERROR_C */
 684
 685 #if defined(MBEDTLS_ERROR_STRERROR_DUMMY)
 686
 687 /*
 688  * Provide an non-function in case MBEDTLS_ERROR_C is not defined
 689  */
 690 void mbedtls_strerror( int ret, char *buf, size_t buflen )
 691 {
 692     ((void) ret);
 693
 694     if( buflen > 0 )
 695         buf[0] = '\0';
 696 }
 697
 698 #endif /* MBEDTLS_ERROR_STRERROR_DUMMY */
 699
 700 #endif /* MBEDTLS_ERROR_C */