mirror of
https://github.com/Mbed-TLS/mbedtls.git
synced 2024-12-28 06:19:27 +00:00
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include "common.h"
|
|
#include "mbedtls/ssl.h"
|
|
#if defined(MBEDTLS_SSL_PROTO_DTLS)
|
|
#include "mbedtls/entropy.h"
|
|
#include "mbedtls/ctr_drbg.h"
|
|
#include "mbedtls/timing.h"
|
|
#include "test/certs.h"
|
|
|
|
#if defined(MBEDTLS_SSL_CLI_C) && \
|
|
defined(MBEDTLS_ENTROPY_C) && \
|
|
defined(MBEDTLS_CTR_DRBG_C) && \
|
|
defined(MBEDTLS_TIMING_C)
|
|
static int initialized = 0;
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_PEM_PARSE_C)
|
|
static mbedtls_x509_crt cacert;
|
|
#endif
|
|
|
|
const char *pers = "fuzz_dtlsclient";
|
|
#endif
|
|
#endif // MBEDTLS_SSL_PROTO_DTLS
|
|
|
|
|
|
|
|
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
|
|
{
|
|
#if defined(MBEDTLS_SSL_PROTO_DTLS) && \
|
|
defined(MBEDTLS_SSL_CLI_C) && \
|
|
defined(MBEDTLS_ENTROPY_C) && \
|
|
defined(MBEDTLS_CTR_DRBG_C) && \
|
|
defined(MBEDTLS_TIMING_C)
|
|
int ret;
|
|
size_t len;
|
|
mbedtls_ssl_context ssl;
|
|
mbedtls_ssl_config conf;
|
|
mbedtls_ctr_drbg_context ctr_drbg;
|
|
mbedtls_entropy_context entropy;
|
|
mbedtls_timing_delay_context timer;
|
|
unsigned char buf[4096];
|
|
fuzzBufferOffset_t biomemfuzz;
|
|
|
|
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) {
|
|
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);
|
|
|
|
#if defined(MBEDTLS_USE_PSA_CRYPTO)
|
|
psa_status_t status = psa_crypto_init();
|
|
if (status != PSA_SUCCESS) {
|
|
goto exit;
|
|
}
|
|
#endif /* MBEDTLS_USE_PSA_CRYPTO */
|
|
|
|
srand(1);
|
|
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,
|
|
MBEDTLS_SSL_IS_CLIENT,
|
|
MBEDTLS_SSL_TRANSPORT_DATAGRAM,
|
|
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);
|
|
#endif
|
|
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) {
|
|
goto exit;
|
|
}
|
|
|
|
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) {
|
|
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);
|
|
|
|
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);
|
|
|
|
if (ret == MBEDTLS_ERR_SSL_WANT_READ) {
|
|
continue;
|
|
} else if (ret <= 0) {
|
|
//EOF or error
|
|
break;
|
|
}
|
|
} while (1);
|
|
}
|
|
|
|
exit:
|
|
mbedtls_entropy_free(&entropy);
|
|
mbedtls_ctr_drbg_free(&ctr_drbg);
|
|
mbedtls_ssl_config_free(&conf);
|
|
mbedtls_ssl_free(&ssl);
|
|
#if defined(MBEDTLS_USE_PSA_CRYPTO)
|
|
mbedtls_psa_crypto_free();
|
|
#endif /* MBEDTLS_USE_PSA_CRYPTO */
|
|
|
|
#else
|
|
(void) Data;
|
|
(void) Size;
|
|
#endif
|
|
return 0;
|
|
}
|