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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2023-01-11 14:52:35 +01:00
parent 480f683d15
commit 1b6c09a62e
391 changed files with 73134 additions and 75084 deletions
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74
programs/fuzz/fuzz_dtlsclient.c
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@@ -25,7 +25,8 @@ const char *pers = "fuzz_dtlsclient";
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
{
#if defined(MBEDTLS_SSL_PROTO_DTLS) && \
defined(MBEDTLS_SSL_CLI_C) && \
defined(MBEDTLS_ENTROPY_C) && \
@@ -43,77 +44,80 @@ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (initialized == 0) {
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
mbedtls_x509_crt_init( &cacert );
if (mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
mbedtls_test_cas_pem_len ) != 0)
mbedtls_x509_crt_init(&cacert);
if (mbedtls_x509_crt_parse(&cacert, (const unsigned char *) mbedtls_test_cas_pem,
mbedtls_test_cas_pem_len) != 0) {
return 1;
}
#endif
dummy_init();
initialized = 1;
}
mbedtls_ssl_init( &ssl );
mbedtls_ssl_config_init( &conf );
mbedtls_ctr_drbg_init( &ctr_drbg );
mbedtls_entropy_init( &entropy );
mbedtls_ssl_init(&ssl);
mbedtls_ssl_config_init(&conf);
mbedtls_ctr_drbg_init(&ctr_drbg);
mbedtls_entropy_init(&entropy);
srand(1);
if( mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy, &entropy,
(const unsigned char *) pers, strlen( pers ) ) != 0 )
if (mbedtls_ctr_drbg_seed(&ctr_drbg, dummy_entropy, &entropy,
(const unsigned char *) pers, strlen(pers)) != 0) {
goto exit;
}
if( mbedtls_ssl_config_defaults( &conf,
if (mbedtls_ssl_config_defaults(&conf,
MBEDTLS_SSL_IS_CLIENT,
MBEDTLS_SSL_TRANSPORT_DATAGRAM,
MBEDTLS_SSL_PRESET_DEFAULT ) != 0 )
MBEDTLS_SSL_PRESET_DEFAULT) != 0) {
goto exit;
}
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
mbedtls_ssl_conf_ca_chain(&conf, &cacert, NULL);
#endif
mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_NONE );
mbedtls_ssl_conf_rng( &conf, dummy_random, &ctr_drbg );
mbedtls_ssl_conf_authmode(&conf, MBEDTLS_SSL_VERIFY_NONE);
mbedtls_ssl_conf_rng(&conf, dummy_random, &ctr_drbg);
if( mbedtls_ssl_setup( &ssl, &conf ) != 0 )
if (mbedtls_ssl_setup(&ssl, &conf) != 0) {
goto exit;
}
mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
mbedtls_timing_get_delay );
mbedtls_ssl_set_timer_cb(&ssl, &timer, mbedtls_timing_set_delay,
mbedtls_timing_get_delay);
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
if( mbedtls_ssl_set_hostname( &ssl, "localhost" ) != 0 )
if (mbedtls_ssl_set_hostname(&ssl, "localhost") != 0) {
goto exit;
}
#endif
biomemfuzz.Data = Data;
biomemfuzz.Size = Size;
biomemfuzz.Offset = 0;
mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout );
mbedtls_ssl_set_bio(&ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout);
ret = mbedtls_ssl_handshake( &ssl );
if( ret == 0 )
{
ret = mbedtls_ssl_handshake(&ssl);
if (ret == 0) {
//keep reading data from server until the end
do
{
len = sizeof( buf ) - 1;
ret = mbedtls_ssl_read( &ssl, buf, len );
do {
len = sizeof(buf) - 1;
ret = mbedtls_ssl_read(&ssl, buf, len);
if( ret == MBEDTLS_ERR_SSL_WANT_READ )
if (ret == MBEDTLS_ERR_SSL_WANT_READ) {
continue;
else if( ret <= 0 )
} else if (ret <= 0) {
//EOF or error
break;
}
while( 1 );
}
} while (1);
}
exit:
mbedtls_entropy_free( &entropy );
mbedtls_ctr_drbg_free( &ctr_drbg );
mbedtls_ssl_config_free( &conf );
mbedtls_ssl_free( &ssl );
mbedtls_entropy_free(&entropy);
mbedtls_ctr_drbg_free(&ctr_drbg);
mbedtls_ssl_config_free(&conf);
mbedtls_ssl_free(&ssl);
#else
(void) Data;