error.c 35.2 KB
Newer Older
1 2 3
/*
 *  Error message information
 *
4
 *  Copyright (C) 2006-2014, Brainspark B.V.
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 *
 *  This file is part of PolarSSL (http://www.polarssl.org)
 *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
 *
 *  All rights reserved.
 *
 *  This program 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.
 *
 *  This program 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 02110-1301 USA.
 */

26
#if !defined(POLARSSL_CONFIG_FILE)
27
#include "polarssl/config.h"
28 29 30
#else
#include POLARSSL_CONFIG_FILE
#endif
31 32 33

#if defined(POLARSSL_ERROR_C)

34 35
#include "polarssl/error.h"

36 37 38 39 40 41 42 43 44 45 46 47
#if defined(POLARSSL_AES_C)
#include "polarssl/aes.h"
#endif

#if defined(POLARSSL_BASE64_C)
#include "polarssl/base64.h"
#endif

#if defined(POLARSSL_BIGNUM_C)
#include "polarssl/bignum.h"
#endif

48 49 50 51
#if defined(POLARSSL_BLOWFISH_C)
#include "polarssl/blowfish.h"
#endif

52 53 54 55
#if defined(POLARSSL_CAMELLIA_C)
#include "polarssl/camellia.h"
#endif

56 57 58 59
#if defined(POLARSSL_CCM_C)
#include "polarssl/ccm.h"
#endif

60 61 62 63
#if defined(POLARSSL_CIPHER_C)
#include "polarssl/cipher.h"
#endif

64 65 66 67
#if defined(POLARSSL_CTR_DRBG_C)
#include "polarssl/ctr_drbg.h"
#endif

68 69 70 71 72 73 74 75
#if defined(POLARSSL_DES_C)
#include "polarssl/des.h"
#endif

#if defined(POLARSSL_DHM_C)
#include "polarssl/dhm.h"
#endif

Paul Bakker's avatar
Paul Bakker committed
76 77 78 79
#if defined(POLARSSL_ECP_C)
#include "polarssl/ecp.h"
#endif

80 81 82 83
#if defined(POLARSSL_ENTROPY_C)
#include "polarssl/entropy.h"
#endif

84 85 86 87
#if defined(POLARSSL_GCM_C)
#include "polarssl/gcm.h"
#endif

88 89 90 91
#if defined(POLARSSL_HMAC_DRBG_C)
#include "polarssl/hmac_drbg.h"
#endif

92 93 94 95
#if defined(POLARSSL_MD_C)
#include "polarssl/md.h"
#endif

96 97 98 99 100 101 102 103 104 105 106 107
#if defined(POLARSSL_MD2_C)
#include "polarssl/md2.h"
#endif

#if defined(POLARSSL_MD4_C)
#include "polarssl/md4.h"
#endif

#if defined(POLARSSL_MD5_C)
#include "polarssl/md5.h"
#endif

108 109 110 111
#if defined(POLARSSL_NET_C)
#include "polarssl/net.h"
#endif

112 113 114 115
#if defined(POLARSSL_OID_C)
#include "polarssl/oid.h"
#endif

116 117 118 119
#if defined(POLARSSL_PADLOCK_C)
#include "polarssl/padlock.h"
#endif

Paul Bakker's avatar
Paul Bakker committed
120 121 122 123
#if defined(POLARSSL_PBKDF2_C)
#include "polarssl/pbkdf2.h"
#endif

124
#if defined(POLARSSL_PEM_PARSE_C) || defined(POLARSSL_PEM_WRITE_C)
125 126 127
#include "polarssl/pem.h"
#endif

128 129 130 131
#if defined(POLARSSL_PK_C)
#include "polarssl/pk.h"
#endif

132 133 134 135
#if defined(POLARSSL_PKCS12_C)
#include "polarssl/pkcs12.h"
#endif

136 137 138 139
#if defined(POLARSSL_PKCS5_C)
#include "polarssl/pkcs5.h"
#endif

140 141 142 143
#if defined(POLARSSL_RIPEMD160_C)
#include "polarssl/ripemd160.h"
#endif

144 145 146 147
#if defined(POLARSSL_RSA_C)
#include "polarssl/rsa.h"
#endif

148 149 150 151
#if defined(POLARSSL_SHA1_C)
#include "polarssl/sha1.h"
#endif

152
#if defined(POLARSSL_SHA256_C)
153
#include "polarssl/sha256.h"
154 155
#endif

156
#if defined(POLARSSL_SHA512_C)
157
#include "polarssl/sha512.h"
158 159
#endif

160
#if defined(POLARSSL_SSL_TLS_C)
161 162 163
#include "polarssl/ssl.h"
#endif

164 165 166 167
#if defined(POLARSSL_THREADING_C)
#include "polarssl/threading.h"
#endif

168
#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
169 170 171 172 173 174 175 176 177 178
#include "polarssl/x509.h"
#endif

#if defined(POLARSSL_XTEA_C)
#include "polarssl/xtea.h"
#endif


#include <string.h>

179 180
#if defined(_MSC_VER) && !defined  snprintf && !defined(EFIX64) && \
    !defined(EFI32)
181 182 183
#define  snprintf  _snprintf
#endif

184
void polarssl_strerror( int ret, char *buf, size_t buflen )
185 186 187 188
{
    size_t len;
    int use_ret;

189 190 191
    if( buflen == 0 )
        return;

192
    memset( buf, 0x00, buflen );
193 194 195
    /* Reduce buflen to make sure MSVC _snprintf() ends with \0 as well */
    buflen -= 1;

196 197 198 199 200 201 202 203 204
    if( ret < 0 )
        ret = -ret;

    if( ret & 0xFF80 )
    {
        use_ret = ret & 0xFF80;

        // High level error codes
        //
205
        // BEGIN generated code
206 207 208 209 210 211 212 213 214 215 216
#if defined(POLARSSL_CIPHER_C)
        if( use_ret == -(POLARSSL_ERR_CIPHER_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "CIPHER - The selected feature is not available" );
        if( use_ret == -(POLARSSL_ERR_CIPHER_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "CIPHER - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_CIPHER_ALLOC_FAILED) )
            snprintf( buf, buflen, "CIPHER - Failed to allocate memory" );
        if( use_ret == -(POLARSSL_ERR_CIPHER_INVALID_PADDING) )
            snprintf( buf, buflen, "CIPHER - Input data contains invalid padding and is rejected" );
        if( use_ret == -(POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED) )
            snprintf( buf, buflen, "CIPHER - Decryption of block requires a full block" );
217 218
        if( use_ret == -(POLARSSL_ERR_CIPHER_AUTH_FAILED) )
            snprintf( buf, buflen, "CIPHER - Authentication failed (for AEAD modes)" );
219 220
#endif /* POLARSSL_CIPHER_C */

221 222 223 224 225 226 227 228 229 230
#if defined(POLARSSL_DHM_C)
        if( use_ret == -(POLARSSL_ERR_DHM_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "DHM - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_DHM_READ_PARAMS_FAILED) )
            snprintf( buf, buflen, "DHM - Reading of the DHM parameters failed" );
        if( use_ret == -(POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED) )
            snprintf( buf, buflen, "DHM - Making of the DHM parameters failed" );
        if( use_ret == -(POLARSSL_ERR_DHM_READ_PUBLIC_FAILED) )
            snprintf( buf, buflen, "DHM - Reading of the public values failed" );
        if( use_ret == -(POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED) )
231
            snprintf( buf, buflen, "DHM - Making of the public value failed" );
232 233
        if( use_ret == -(POLARSSL_ERR_DHM_CALC_SECRET_FAILED) )
            snprintf( buf, buflen, "DHM - Calculation of the DHM secret failed" );
234 235 236 237 238 239
        if( use_ret == -(POLARSSL_ERR_DHM_INVALID_FORMAT) )
            snprintf( buf, buflen, "DHM - The ASN.1 data is not formatted correctly" );
        if( use_ret == -(POLARSSL_ERR_DHM_MALLOC_FAILED) )
            snprintf( buf, buflen, "DHM - Allocation of memory failed" );
        if( use_ret == -(POLARSSL_ERR_DHM_FILE_IO_ERROR) )
            snprintf( buf, buflen, "DHM - Read/write of file failed" );
240 241
#endif /* POLARSSL_DHM_C */

Paul Bakker's avatar
Paul Bakker committed
242 243 244
#if defined(POLARSSL_ECP_C)
        if( use_ret == -(POLARSSL_ERR_ECP_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "ECP - Bad input parameters to function" );
245 246
        if( use_ret == -(POLARSSL_ERR_ECP_BUFFER_TOO_SMALL) )
            snprintf( buf, buflen, "ECP - The buffer is too small to write to" );
Paul Bakker's avatar
Paul Bakker committed
247 248
        if( use_ret == -(POLARSSL_ERR_ECP_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "ECP - Requested curve not available" );
249 250
        if( use_ret == -(POLARSSL_ERR_ECP_VERIFY_FAILED) )
            snprintf( buf, buflen, "ECP - The signature is not valid" );
251 252 253 254 255 256
        if( use_ret == -(POLARSSL_ERR_ECP_MALLOC_FAILED) )
            snprintf( buf, buflen, "ECP - Memory allocation failed" );
        if( use_ret == -(POLARSSL_ERR_ECP_RANDOM_FAILED) )
            snprintf( buf, buflen, "ECP - Generation of random value, such as (ephemeral) key, failed" );
        if( use_ret == -(POLARSSL_ERR_ECP_INVALID_KEY) )
            snprintf( buf, buflen, "ECP - Invalid private or public key" );
257 258
        if( use_ret == -(POLARSSL_ERR_ECP_SIG_LEN_MISMATCH) )
            snprintf( buf, buflen, "ECP - Signature is valid but shorter than the user-supplied length" );
Paul Bakker's avatar
Paul Bakker committed
259 260
#endif /* POLARSSL_ECP_C */

261 262 263
#if defined(POLARSSL_MD_C)
        if( use_ret == -(POLARSSL_ERR_MD_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "MD - The selected feature is not available" );
264 265 266 267
        if( use_ret == -(POLARSSL_ERR_MD_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "MD - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_MD_ALLOC_FAILED) )
            snprintf( buf, buflen, "MD - Failed to allocate memory" );
268 269
        if( use_ret == -(POLARSSL_ERR_MD_FILE_IO_ERROR) )
            snprintf( buf, buflen, "MD - Opening or reading of file failed" );
270 271
#endif /* POLARSSL_MD_C */

272
#if defined(POLARSSL_PEM_PARSE_C) || defined(POLARSSL_PEM_WRITE_C)
273 274
        if( use_ret == -(POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT) )
            snprintf( buf, buflen, "PEM - No PEM header or footer found" );
275 276 277 278 279 280 281 282 283 284 285 286 287 288
        if( use_ret == -(POLARSSL_ERR_PEM_INVALID_DATA) )
            snprintf( buf, buflen, "PEM - PEM string is not as expected" );
        if( use_ret == -(POLARSSL_ERR_PEM_MALLOC_FAILED) )
            snprintf( buf, buflen, "PEM - Failed to allocate memory" );
        if( use_ret == -(POLARSSL_ERR_PEM_INVALID_ENC_IV) )
            snprintf( buf, buflen, "PEM - RSA IV is not in hex-format" );
        if( use_ret == -(POLARSSL_ERR_PEM_UNKNOWN_ENC_ALG) )
            snprintf( buf, buflen, "PEM - Unsupported key encryption algorithm" );
        if( use_ret == -(POLARSSL_ERR_PEM_PASSWORD_REQUIRED) )
            snprintf( buf, buflen, "PEM - Private key password can't be empty" );
        if( use_ret == -(POLARSSL_ERR_PEM_PASSWORD_MISMATCH) )
            snprintf( buf, buflen, "PEM - Given private key password does not allow for correct decryption" );
        if( use_ret == -(POLARSSL_ERR_PEM_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "PEM - Unavailable feature, e.g. hashing/encryption combination" );
289 290
        if( use_ret == -(POLARSSL_ERR_PEM_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "PEM - Bad input parameters to function" );
291
#endif /* POLARSSL_PEM_PARSE_C || POLARSSL_PEM_WRITE_C */
292

293 294 295
#if defined(POLARSSL_PK_C)
        if( use_ret == -(POLARSSL_ERR_PK_MALLOC_FAILED) )
            snprintf( buf, buflen, "PK - Memory alloation failed" );
296
        if( use_ret == -(POLARSSL_ERR_PK_TYPE_MISMATCH) )
297
            snprintf( buf, buflen, "PK - Type mismatch, eg attempt to encrypt with an ECDSA key" );
Manuel Pégourié-Gonnard's avatar
Manuel Pégourié-Gonnard committed
298 299
        if( use_ret == -(POLARSSL_ERR_PK_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "PK - Bad input parameters to function" );
300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319
        if( use_ret == -(POLARSSL_ERR_PK_FILE_IO_ERROR) )
            snprintf( buf, buflen, "PK - Read/write of file failed" );
        if( use_ret == -(POLARSSL_ERR_PK_KEY_INVALID_VERSION) )
            snprintf( buf, buflen, "PK - Unsupported key version" );
        if( use_ret == -(POLARSSL_ERR_PK_KEY_INVALID_FORMAT) )
            snprintf( buf, buflen, "PK - Invalid key tag or value" );
        if( use_ret == -(POLARSSL_ERR_PK_UNKNOWN_PK_ALG) )
            snprintf( buf, buflen, "PK - Key algorithm is unsupported (only RSA and EC are supported)" );
        if( use_ret == -(POLARSSL_ERR_PK_PASSWORD_REQUIRED) )
            snprintf( buf, buflen, "PK - Private key password can't be empty" );
        if( use_ret == -(POLARSSL_ERR_PK_PASSWORD_MISMATCH) )
            snprintf( buf, buflen, "PK - Given private key password does not allow for correct decryption" );
        if( use_ret == -(POLARSSL_ERR_PK_INVALID_PUBKEY) )
            snprintf( buf, buflen, "PK - The pubkey tag or value is invalid (only RSA and EC are supported)" );
        if( use_ret == -(POLARSSL_ERR_PK_INVALID_ALG) )
            snprintf( buf, buflen, "PK - The algorithm tag or value is invalid" );
        if( use_ret == -(POLARSSL_ERR_PK_UNKNOWN_NAMED_CURVE) )
            snprintf( buf, buflen, "PK - Elliptic curve is unsupported (only NIST curves are supported)" );
        if( use_ret == -(POLARSSL_ERR_PK_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "PK - Unavailable feature, e.g. RSA disabled for RSA key" );
320 321
        if( use_ret == -(POLARSSL_ERR_PK_SIG_LEN_MISMATCH) )
            snprintf( buf, buflen, "PK - The signature is valid but its length is less than expected" );
322 323
#endif /* POLARSSL_PK_C */

324 325 326 327 328 329 330
#if defined(POLARSSL_PKCS12_C)
        if( use_ret == -(POLARSSL_ERR_PKCS12_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "PKCS12 - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_PKCS12_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "PKCS12 - Feature not available, e.g. unsupported encryption scheme" );
        if( use_ret == -(POLARSSL_ERR_PKCS12_PBE_INVALID_FORMAT) )
            snprintf( buf, buflen, "PKCS12 - PBE ASN.1 data not as expected" );
331 332
        if( use_ret == -(POLARSSL_ERR_PKCS12_PASSWORD_MISMATCH) )
            snprintf( buf, buflen, "PKCS12 - Given private key password does not allow for correct decryption" );
333 334
#endif /* POLARSSL_PKCS12_C */

335 336 337 338 339 340 341 342 343 344 345
#if defined(POLARSSL_PKCS5_C)
        if( use_ret == -(POLARSSL_ERR_PKCS5_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "PKCS5 - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_PKCS5_INVALID_FORMAT) )
            snprintf( buf, buflen, "PKCS5 - Unexpected ASN.1 data" );
        if( use_ret == -(POLARSSL_ERR_PKCS5_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "PKCS5 - Requested encryption or digest alg not available" );
        if( use_ret == -(POLARSSL_ERR_PKCS5_PASSWORD_MISMATCH) )
            snprintf( buf, buflen, "PKCS5 - Given private key password does not allow for correct decryption" );
#endif /* POLARSSL_PKCS5_C */

346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366
#if defined(POLARSSL_RSA_C)
        if( use_ret == -(POLARSSL_ERR_RSA_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "RSA - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_RSA_INVALID_PADDING) )
            snprintf( buf, buflen, "RSA - Input data contains invalid padding and is rejected" );
        if( use_ret == -(POLARSSL_ERR_RSA_KEY_GEN_FAILED) )
            snprintf( buf, buflen, "RSA - Something failed during generation of a key" );
        if( use_ret == -(POLARSSL_ERR_RSA_KEY_CHECK_FAILED) )
            snprintf( buf, buflen, "RSA - Key failed to pass the libraries validity check" );
        if( use_ret == -(POLARSSL_ERR_RSA_PUBLIC_FAILED) )
            snprintf( buf, buflen, "RSA - The public key operation failed" );
        if( use_ret == -(POLARSSL_ERR_RSA_PRIVATE_FAILED) )
            snprintf( buf, buflen, "RSA - The private key operation failed" );
        if( use_ret == -(POLARSSL_ERR_RSA_VERIFY_FAILED) )
            snprintf( buf, buflen, "RSA - The PKCS#1 verification failed" );
        if( use_ret == -(POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE) )
            snprintf( buf, buflen, "RSA - The output buffer for decryption is not large enough" );
        if( use_ret == -(POLARSSL_ERR_RSA_RNG_FAILED) )
            snprintf( buf, buflen, "RSA - The random generator failed to generate non-zeros" );
#endif /* POLARSSL_RSA_C */

367
#if defined(POLARSSL_SSL_TLS_C)
368 369 370 371 372 373 374 375
        if( use_ret == -(POLARSSL_ERR_SSL_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "SSL - The requested feature is not available" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_INPUT_DATA) )
            snprintf( buf, buflen, "SSL - Bad input parameters to function" );
        if( use_ret == -(POLARSSL_ERR_SSL_INVALID_MAC) )
            snprintf( buf, buflen, "SSL - Verification of the message MAC failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_INVALID_RECORD) )
            snprintf( buf, buflen, "SSL - An invalid SSL record was received" );
376 377
        if( use_ret == -(POLARSSL_ERR_SSL_CONN_EOF) )
            snprintf( buf, buflen, "SSL - The connection indicated an EOF" );
378 379 380 381
        if( use_ret == -(POLARSSL_ERR_SSL_UNKNOWN_CIPHER) )
            snprintf( buf, buflen, "SSL - An unknown cipher was received" );
        if( use_ret == -(POLARSSL_ERR_SSL_NO_CIPHER_CHOSEN) )
            snprintf( buf, buflen, "SSL - The server has no ciphersuites in common with the client" );
382 383
        if( use_ret == -(POLARSSL_ERR_SSL_NO_RNG) )
            snprintf( buf, buflen, "SSL - No RNG was provided to the SSL module" );
384 385 386 387 388 389 390
        if( use_ret == -(POLARSSL_ERR_SSL_NO_CLIENT_CERTIFICATE) )
            snprintf( buf, buflen, "SSL - No client certification received from the client, but required by the authentication mode" );
        if( use_ret == -(POLARSSL_ERR_SSL_CERTIFICATE_TOO_LARGE) )
            snprintf( buf, buflen, "SSL - DESCRIPTION MISSING" );
        if( use_ret == -(POLARSSL_ERR_SSL_CERTIFICATE_REQUIRED) )
            snprintf( buf, buflen, "SSL - The own certificate is not set, but needed by the server" );
        if( use_ret == -(POLARSSL_ERR_SSL_PRIVATE_KEY_REQUIRED) )
391
            snprintf( buf, buflen, "SSL - The own private key or pre-shared key is not set, but needed" );
392 393 394 395 396
        if( use_ret == -(POLARSSL_ERR_SSL_CA_CHAIN_REQUIRED) )
            snprintf( buf, buflen, "SSL - No CA Chain is set, but required to operate" );
        if( use_ret == -(POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE) )
            snprintf( buf, buflen, "SSL - An unexpected message was received from our peer" );
        if( use_ret == -(POLARSSL_ERR_SSL_FATAL_ALERT_MESSAGE) )
397
        {
398
            snprintf( buf, buflen, "SSL - A fatal alert message was received from our peer" );
399 400
            return;
        }
401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418
        if( use_ret == -(POLARSSL_ERR_SSL_PEER_VERIFY_FAILED) )
            snprintf( buf, buflen, "SSL - Verification of our peer failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY) )
            snprintf( buf, buflen, "SSL - The peer notified us that the connection is going to be closed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_HELLO) )
            snprintf( buf, buflen, "SSL - Processing of the ClientHello handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_SERVER_HELLO) )
            snprintf( buf, buflen, "SSL - Processing of the ServerHello handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE) )
            snprintf( buf, buflen, "SSL - Processing of the Certificate handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_REQUEST) )
            snprintf( buf, buflen, "SSL - Processing of the CertificateRequest handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE) )
            snprintf( buf, buflen, "SSL - Processing of the ServerKeyExchange handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_SERVER_HELLO_DONE) )
            snprintf( buf, buflen, "SSL - Processing of the ServerHelloDone handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE) )
            snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed" );
419 420 421 422
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP) )
            snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Read Public" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS) )
            snprintf( buf, buflen, "SSL - Processing of the ClientKeyExchange handshake message failed in DHM / ECDH Calculate Secret" );
423 424 425 426 427 428
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY) )
            snprintf( buf, buflen, "SSL - Processing of the CertificateVerify handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_CHANGE_CIPHER_SPEC) )
            snprintf( buf, buflen, "SSL - Processing of the ChangeCipherSpec handshake message failed" );
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_FINISHED) )
            snprintf( buf, buflen, "SSL - Processing of the Finished handshake message failed" );
429 430
        if( use_ret == -(POLARSSL_ERR_SSL_MALLOC_FAILED) )
            snprintf( buf, buflen, "SSL - Memory allocation failed" );
431 432 433 434
        if( use_ret == -(POLARSSL_ERR_SSL_HW_ACCEL_FAILED) )
            snprintf( buf, buflen, "SSL - Hardware acceleration function returned with error" );
        if( use_ret == -(POLARSSL_ERR_SSL_HW_ACCEL_FALLTHROUGH) )
            snprintf( buf, buflen, "SSL - Hardware acceleration function skipped / left alone data" );
435 436
        if( use_ret == -(POLARSSL_ERR_SSL_COMPRESSION_FAILED) )
            snprintf( buf, buflen, "SSL - Processing of the compression / decompression failed" );
437 438
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_PROTOCOL_VERSION) )
            snprintf( buf, buflen, "SSL - Handshake protocol not within min/max boundaries" );
439 440
        if( use_ret == -(POLARSSL_ERR_SSL_BAD_HS_NEW_SESSION_TICKET) )
            snprintf( buf, buflen, "SSL - Processing of the NewSessionTicket handshake message failed" );
441 442
        if( use_ret == -(POLARSSL_ERR_SSL_SESSION_TICKET_EXPIRED) )
            snprintf( buf, buflen, "SSL - Session ticket has expired" );
443 444
        if( use_ret == -(POLARSSL_ERR_SSL_PK_TYPE_MISMATCH) )
            snprintf( buf, buflen, "SSL - Public key type mismatch (eg, asked for RSA key exchange and presented EC key)" );
Paul Bakker's avatar
Paul Bakker committed
445
        if( use_ret == -(POLARSSL_ERR_SSL_UNKNOWN_IDENTITY) )
Paul Bakker's avatar
Paul Bakker committed
446
            snprintf( buf, buflen, "SSL - Unknown identity received (eg, PSK identity)" );
447 448
        if( use_ret == -(POLARSSL_ERR_SSL_INTERNAL_ERROR) )
            snprintf( buf, buflen, "SSL - Internal error (eg, unexpected failure in lower-level module)" );
449 450
        if( use_ret == -(POLARSSL_ERR_SSL_COUNTER_WRAPPING) )
            snprintf( buf, buflen, "SSL - A counter would wrap (eg, too many messages exchanged)" );
451
#endif /* POLARSSL_SSL_TLS_C */
452

453
#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
454 455
        if( use_ret == -(POLARSSL_ERR_X509_FEATURE_UNAVAILABLE) )
            snprintf( buf, buflen, "X509 - Unavailable feature, e.g. RSA hashing/encryption combination" );
456 457 458 459 460 461 462
        if( use_ret == -(POLARSSL_ERR_X509_UNKNOWN_OID) )
            snprintf( buf, buflen, "X509 - Requested OID is unknown" );
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_FORMAT) )
            snprintf( buf, buflen, "X509 - The CRT/CRL/CSR format is invalid, e.g. different type expected" );
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_VERSION) )
            snprintf( buf, buflen, "X509 - The CRT/CRL/CSR version element is invalid" );
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_SERIAL) )
463
            snprintf( buf, buflen, "X509 - The serial tag or value is invalid" );
464
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_ALG) )
465
            snprintf( buf, buflen, "X509 - The algorithm tag or value is invalid" );
466
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_NAME) )
467
            snprintf( buf, buflen, "X509 - The name tag or value is invalid" );
468
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_DATE) )
469
            snprintf( buf, buflen, "X509 - The date tag or value is invalid" );
470
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_SIGNATURE) )
471
            snprintf( buf, buflen, "X509 - The signature tag or value invalid" );
472
        if( use_ret == -(POLARSSL_ERR_X509_INVALID_EXTENSIONS) )
473
            snprintf( buf, buflen, "X509 - The extension tag or value is invalid" );
474 475 476
        if( use_ret == -(POLARSSL_ERR_X509_UNKNOWN_VERSION) )
            snprintf( buf, buflen, "X509 - CRT/CRL/CSR has an unsupported version number" );
        if( use_ret == -(POLARSSL_ERR_X509_UNKNOWN_SIG_ALG) )
477
            snprintf( buf, buflen, "X509 - Signature algorithm (oid) is unsupported" );
478
        if( use_ret == -(POLARSSL_ERR_X509_SIG_MISMATCH) )
Paul Bakker's avatar
Paul Bakker committed
479
            snprintf( buf, buflen, "X509 - Signature algorithms do not match. (see \\c ::x509_crt sig_oid)" );
480 481
        if( use_ret == -(POLARSSL_ERR_X509_CERT_VERIFY_FAILED) )
            snprintf( buf, buflen, "X509 - Certificate verification failed, e.g. CRL, CA or signature check failed" );
482 483
        if( use_ret == -(POLARSSL_ERR_X509_CERT_UNKNOWN_FORMAT) )
            snprintf( buf, buflen, "X509 - Format not recognized as DER or PEM" );
484
        if( use_ret == -(POLARSSL_ERR_X509_BAD_INPUT_DATA) )
485 486 487 488 489
            snprintf( buf, buflen, "X509 - Input invalid" );
        if( use_ret == -(POLARSSL_ERR_X509_MALLOC_FAILED) )
            snprintf( buf, buflen, "X509 - Allocation of memory failed" );
        if( use_ret == -(POLARSSL_ERR_X509_FILE_IO_ERROR) )
            snprintf( buf, buflen, "X509 - Read/write of file failed" );
490
#endif /* POLARSSL_X509_USE,X509_CREATE_C */
491
        // END generated code
492

493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519
        if( strlen( buf ) == 0 )
            snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
    }

    use_ret = ret & ~0xFF80;

    if( use_ret == 0 )
        return;

    // If high level code is present, make a concatenation between both
    // error strings.
    //
    len = strlen( buf );

    if( len > 0 )
    {
        if( buflen - len < 5 )
            return;

        snprintf( buf + len, buflen - len, " : " );

        buf += len + 3;
        buflen -= len + 3;
    }

    // Low level error codes
    //
520
    // BEGIN generated code
521 522 523 524 525 526 527
#if defined(POLARSSL_AES_C)
    if( use_ret == -(POLARSSL_ERR_AES_INVALID_KEY_LENGTH) )
        snprintf( buf, buflen, "AES - Invalid key length" );
    if( use_ret == -(POLARSSL_ERR_AES_INVALID_INPUT_LENGTH) )
        snprintf( buf, buflen, "AES - Invalid data input length" );
#endif /* POLARSSL_AES_C */

528 529 530 531 532 533 534 535 536 537 538
#if defined(POLARSSL_ASN1_PARSE_C)
    if( use_ret == -(POLARSSL_ERR_ASN1_OUT_OF_DATA) )
        snprintf( buf, buflen, "ASN1 - Out of data when parsing an ASN1 data structure" );
    if( use_ret == -(POLARSSL_ERR_ASN1_UNEXPECTED_TAG) )
        snprintf( buf, buflen, "ASN1 - ASN1 tag was of an unexpected value" );
    if( use_ret == -(POLARSSL_ERR_ASN1_INVALID_LENGTH) )
        snprintf( buf, buflen, "ASN1 - Error when trying to determine the length or invalid length" );
    if( use_ret == -(POLARSSL_ERR_ASN1_LENGTH_MISMATCH) )
        snprintf( buf, buflen, "ASN1 - Actual length differs from expected length" );
    if( use_ret == -(POLARSSL_ERR_ASN1_INVALID_DATA) )
        snprintf( buf, buflen, "ASN1 - Data is invalid. (not used)" );
539 540
    if( use_ret == -(POLARSSL_ERR_ASN1_MALLOC_FAILED) )
        snprintf( buf, buflen, "ASN1 - Memory allocation failed" );
541 542
    if( use_ret == -(POLARSSL_ERR_ASN1_BUF_TOO_SMALL) )
        snprintf( buf, buflen, "ASN1 - Buffer too small when writing ASN.1 data structure" );
543 544
#endif /* POLARSSL_ASN1_PARSE_C */

545 546 547 548 549 550 551 552 553 554 555 556 557 558 559
#if defined(POLARSSL_BASE64_C)
    if( use_ret == -(POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) )
        snprintf( buf, buflen, "BASE64 - Output buffer too small" );
    if( use_ret == -(POLARSSL_ERR_BASE64_INVALID_CHARACTER) )
        snprintf( buf, buflen, "BASE64 - Invalid character in input" );
#endif /* POLARSSL_BASE64_C */

#if defined(POLARSSL_BIGNUM_C)
    if( use_ret == -(POLARSSL_ERR_MPI_FILE_IO_ERROR) )
        snprintf( buf, buflen, "BIGNUM - An error occurred while reading from or writing to a file" );
    if( use_ret == -(POLARSSL_ERR_MPI_BAD_INPUT_DATA) )
        snprintf( buf, buflen, "BIGNUM - Bad input parameters to function" );
    if( use_ret == -(POLARSSL_ERR_MPI_INVALID_CHARACTER) )
        snprintf( buf, buflen, "BIGNUM - There is an invalid character in the digit string" );
    if( use_ret == -(POLARSSL_ERR_MPI_BUFFER_TOO_SMALL) )
560
        snprintf( buf, buflen, "BIGNUM - The buffer is too small to write to" );
561 562 563 564 565 566
    if( use_ret == -(POLARSSL_ERR_MPI_NEGATIVE_VALUE) )
        snprintf( buf, buflen, "BIGNUM - The input arguments are negative or result in illegal output" );
    if( use_ret == -(POLARSSL_ERR_MPI_DIVISION_BY_ZERO) )
        snprintf( buf, buflen, "BIGNUM - The input argument for division is zero, which is not allowed" );
    if( use_ret == -(POLARSSL_ERR_MPI_NOT_ACCEPTABLE) )
        snprintf( buf, buflen, "BIGNUM - The input arguments are not acceptable" );
567 568
    if( use_ret == -(POLARSSL_ERR_MPI_MALLOC_FAILED) )
        snprintf( buf, buflen, "BIGNUM - Memory allocation failed" );
569
#endif /* POLARSSL_BIGNUM_C */
570 571 572 573 574 575 576

#if defined(POLARSSL_BLOWFISH_C)
    if( use_ret == -(POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH) )
        snprintf( buf, buflen, "BLOWFISH - Invalid key length" );
    if( use_ret == -(POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH) )
        snprintf( buf, buflen, "BLOWFISH - Invalid data input length" );
#endif /* POLARSSL_BLOWFISH_C */
577 578 579 580 581 582 583 584

#if defined(POLARSSL_CAMELLIA_C)
    if( use_ret == -(POLARSSL_ERR_CAMELLIA_INVALID_KEY_LENGTH) )
        snprintf( buf, buflen, "CAMELLIA - Invalid key length" );
    if( use_ret == -(POLARSSL_ERR_CAMELLIA_INVALID_INPUT_LENGTH) )
        snprintf( buf, buflen, "CAMELLIA - Invalid data input length" );
#endif /* POLARSSL_CAMELLIA_C */

585 586 587 588 589 590 591
#if defined(POLARSSL_CCM_C)
    if( use_ret == -(POLARSSL_ERR_CCM_BAD_INPUT) )
        snprintf( buf, buflen, "CCM - Bad input parameters to function" );
    if( use_ret == -(POLARSSL_ERR_CCM_AUTH_FAILED) )
        snprintf( buf, buflen, "CCM - Authenticated decryption failed" );
#endif /* POLARSSL_CCM_C */

592 593 594 595 596 597 598
#if defined(POLARSSL_CTR_DRBG_C)
    if( use_ret == -(POLARSSL_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED) )
        snprintf( buf, buflen, "CTR_DRBG - The entropy source failed" );
    if( use_ret == -(POLARSSL_ERR_CTR_DRBG_REQUEST_TOO_BIG) )
        snprintf( buf, buflen, "CTR_DRBG - Too many random requested in single call" );
    if( use_ret == -(POLARSSL_ERR_CTR_DRBG_INPUT_TOO_BIG) )
        snprintf( buf, buflen, "CTR_DRBG - Input too large (Entropy + additional)" );
599 600
    if( use_ret == -(POLARSSL_ERR_CTR_DRBG_FILE_IO_ERROR) )
        snprintf( buf, buflen, "CTR_DRBG - Read/write error in file" );
601 602
#endif /* POLARSSL_CTR_DRBG_C */

603 604 605 606 607
#if defined(POLARSSL_DES_C)
    if( use_ret == -(POLARSSL_ERR_DES_INVALID_INPUT_LENGTH) )
        snprintf( buf, buflen, "DES - The data input has an invalid length" );
#endif /* POLARSSL_DES_C */

608 609 610 611 612
#if defined(POLARSSL_ENTROPY_C)
    if( use_ret == -(POLARSSL_ERR_ENTROPY_SOURCE_FAILED) )
        snprintf( buf, buflen, "ENTROPY - Critical entropy source failure" );
    if( use_ret == -(POLARSSL_ERR_ENTROPY_MAX_SOURCES) )
        snprintf( buf, buflen, "ENTROPY - No more sources can be added" );
613 614
    if( use_ret == -(POLARSSL_ERR_ENTROPY_NO_SOURCES_DEFINED) )
        snprintf( buf, buflen, "ENTROPY - No sources have been added to poll" );
615 616
    if( use_ret == -(POLARSSL_ERR_ENTROPY_FILE_IO_ERROR) )
        snprintf( buf, buflen, "ENTROPY - Read/write error in file" );
617 618
#endif /* POLARSSL_ENTROPY_C */

619 620 621
#if defined(POLARSSL_GCM_C)
    if( use_ret == -(POLARSSL_ERR_GCM_AUTH_FAILED) )
        snprintf( buf, buflen, "GCM - Authenticated decryption failed" );
Paul Bakker's avatar
Paul Bakker committed
622 623
    if( use_ret == -(POLARSSL_ERR_GCM_BAD_INPUT) )
        snprintf( buf, buflen, "GCM - Bad input parameters to function" );
624 625
#endif /* POLARSSL_GCM_C */

626 627 628 629 630 631 632
#if defined(POLARSSL_HMAC_DRBG_C)
    if( use_ret == -(POLARSSL_ERR_HMAC_DRBG_REQUEST_TOO_BIG) )
        snprintf( buf, buflen, "HMAC_DRBG - Too many random requested in single call" );
    if( use_ret == -(POLARSSL_ERR_HMAC_DRBG_INPUT_TOO_BIG) )
        snprintf( buf, buflen, "HMAC_DRBG - Input too large (Entropy + additional)" );
    if( use_ret == -(POLARSSL_ERR_HMAC_DRBG_FILE_IO_ERROR) )
        snprintf( buf, buflen, "HMAC_DRBG - Read/write error in file" );
633 634
    if( use_ret == -(POLARSSL_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED) )
        snprintf( buf, buflen, "HMAC_DRBG - The entropy source failed" );
635 636
#endif /* POLARSSL_HMAC_DRBG_C */

637 638 639 640 641 642 643 644 645 646 647 648 649 650 651
#if defined(POLARSSL_MD2_C)
    if( use_ret == -(POLARSSL_ERR_MD2_FILE_IO_ERROR) )
        snprintf( buf, buflen, "MD2 - Read/write error in file" );
#endif /* POLARSSL_MD2_C */

#if defined(POLARSSL_MD4_C)
    if( use_ret == -(POLARSSL_ERR_MD4_FILE_IO_ERROR) )
        snprintf( buf, buflen, "MD4 - Read/write error in file" );
#endif /* POLARSSL_MD4_C */

#if defined(POLARSSL_MD5_C)
    if( use_ret == -(POLARSSL_ERR_MD5_FILE_IO_ERROR) )
        snprintf( buf, buflen, "MD5 - Read/write error in file" );
#endif /* POLARSSL_MD5_C */

652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670
#if defined(POLARSSL_NET_C)
    if( use_ret == -(POLARSSL_ERR_NET_UNKNOWN_HOST) )
        snprintf( buf, buflen, "NET - Failed to get an IP address for the given hostname" );
    if( use_ret == -(POLARSSL_ERR_NET_SOCKET_FAILED) )
        snprintf( buf, buflen, "NET - Failed to open a socket" );
    if( use_ret == -(POLARSSL_ERR_NET_CONNECT_FAILED) )
        snprintf( buf, buflen, "NET - The connection to the given server / port failed" );
    if( use_ret == -(POLARSSL_ERR_NET_BIND_FAILED) )
        snprintf( buf, buflen, "NET - Binding of the socket failed" );
    if( use_ret == -(POLARSSL_ERR_NET_LISTEN_FAILED) )
        snprintf( buf, buflen, "NET - Could not listen on the socket" );
    if( use_ret == -(POLARSSL_ERR_NET_ACCEPT_FAILED) )
        snprintf( buf, buflen, "NET - Could not accept the incoming connection" );
    if( use_ret == -(POLARSSL_ERR_NET_RECV_FAILED) )
        snprintf( buf, buflen, "NET - Reading information from the socket failed" );
    if( use_ret == -(POLARSSL_ERR_NET_SEND_FAILED) )
        snprintf( buf, buflen, "NET - Sending information through the socket failed" );
    if( use_ret == -(POLARSSL_ERR_NET_CONN_RESET) )
        snprintf( buf, buflen, "NET - Connection was reset by peer" );
671 672 673 674
    if( use_ret == -(POLARSSL_ERR_NET_WANT_READ) )
        snprintf( buf, buflen, "NET - Connection requires a read call" );
    if( use_ret == -(POLARSSL_ERR_NET_WANT_WRITE) )
        snprintf( buf, buflen, "NET - Connection requires a write call" );
675 676
#endif /* POLARSSL_NET_C */

677 678 679
#if defined(POLARSSL_OID_C)
    if( use_ret == -(POLARSSL_ERR_OID_NOT_FOUND) )
        snprintf( buf, buflen, "OID - OID is not found" );
680 681
    if( use_ret == -(POLARSSL_ERR_OID_BUF_TOO_SMALL) )
        snprintf( buf, buflen, "OID - output buffer is too small" );
682 683
#endif /* POLARSSL_OID_C */

684 685 686 687 688
#if defined(POLARSSL_PADLOCK_C)
    if( use_ret == -(POLARSSL_ERR_PADLOCK_DATA_MISALIGNED) )
        snprintf( buf, buflen, "PADLOCK - Input data should be aligned" );
#endif /* POLARSSL_PADLOCK_C */

Paul Bakker's avatar
Paul Bakker committed
689 690 691 692 693
#if defined(POLARSSL_PBKDF2_C)
    if( use_ret == -(POLARSSL_ERR_PBKDF2_BAD_INPUT_DATA) )
        snprintf( buf, buflen, "PBKDF2 - Bad input parameters to function" );
#endif /* POLARSSL_PBKDF2_C */

694 695 696 697 698
#if defined(POLARSSL_RIPEMD160_C)
    if( use_ret == -(POLARSSL_ERR_RIPEMD160_FILE_IO_ERROR) )
        snprintf( buf, buflen, "RIPEMD160 - Read/write error in file" );
#endif /* POLARSSL_RIPEMD160_C */

699 700 701 702 703
#if defined(POLARSSL_SHA1_C)
    if( use_ret == -(POLARSSL_ERR_SHA1_FILE_IO_ERROR) )
        snprintf( buf, buflen, "SHA1 - Read/write error in file" );
#endif /* POLARSSL_SHA1_C */

704 705 706 707
#if defined(POLARSSL_SHA256_C)
    if( use_ret == -(POLARSSL_ERR_SHA256_FILE_IO_ERROR) )
        snprintf( buf, buflen, "SHA256 - Read/write error in file" );
#endif /* POLARSSL_SHA256_C */
708

709 710 711 712
#if defined(POLARSSL_SHA512_C)
    if( use_ret == -(POLARSSL_ERR_SHA512_FILE_IO_ERROR) )
        snprintf( buf, buflen, "SHA512 - Read/write error in file" );
#endif /* POLARSSL_SHA512_C */
713

714 715 716 717 718 719 720 721 722
#if defined(POLARSSL_THREADING_C)
    if( use_ret == -(POLARSSL_ERR_THREADING_FEATURE_UNAVAILABLE) )
        snprintf( buf, buflen, "THREADING - The selected feature is not available" );
    if( use_ret == -(POLARSSL_ERR_THREADING_BAD_INPUT_DATA) )
        snprintf( buf, buflen, "THREADING - Bad input parameters to function" );
    if( use_ret == -(POLARSSL_ERR_THREADING_MUTEX_ERROR) )
        snprintf( buf, buflen, "THREADING - Locking / unlocking / free failed with error code" );
#endif /* POLARSSL_THREADING_C */

723 724 725 726
#if defined(POLARSSL_XTEA_C)
    if( use_ret == -(POLARSSL_ERR_XTEA_INVALID_INPUT_LENGTH) )
        snprintf( buf, buflen, "XTEA - The data input has an invalid length" );
#endif /* POLARSSL_XTEA_C */
727
    // END generated code
728 729 730 731 732 733 734

    if( strlen( buf ) != 0 )
        return;

    snprintf( buf, buflen, "UNKNOWN ERROR CODE (%04X)", use_ret );
}

735 736 737
#if defined(POLARSSL_ERROR_STRERROR_BC)
void error_strerror( int ret, char *buf, size_t buflen )
{
738
    polarssl_strerror( ret, buf, buflen );
739 740 741
}
#endif /* POLARSSL_ERROR_STRERROR_BC */

742 743 744 745 746 747 748 749 750
#else /* POLARSSL_ERROR_C */

#if defined(POLARSSL_ERROR_STRERROR_DUMMY)

#include <string.h>

/*
 * Provide an non-function in case POLARSSL_ERROR_C is not defined
 */
751
void polarssl_strerror( int ret, char *buf, size_t buflen )
752 753 754 755 756 757 758
{
    ((void) ret);

    if( buflen > 0 )
        buf[0] = '\0';
}

759 760 761
#if defined(POLARSSL_ERROR_STRERROR_BC)
void error_strerror( int ret, char *buf, size_t buflen )
{
762
    polarssl_strerror( ret, buf, buflen );
763 764
}
#endif /* POLARSSL_ERROR_STRERROR_BC */
765
#endif /* POLARSSL_ERROR_STRERROR_DUMMY */
766

767
#endif /* POLARSSL_ERROR_C */