mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-26 14:15:51 +01:00
141 lines
4.4 KiB
C
141 lines
4.4 KiB
C
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.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/certs.h"
|
|
#include "mbedtls/timing.h"
|
|
#include "mbedtls/ssl_cookie.h"
|
|
|
|
|
|
const char *pers = "fuzz_dtlsserver";
|
|
const unsigned char client_ip[4] = {0x7F, 0, 0, 1};
|
|
static bool initialized = 0;
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C)
|
|
static mbedtls_x509_crt srvcert;
|
|
static mbedtls_pk_context pkey;
|
|
#endif
|
|
#endif
|
|
|
|
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
|
|
#if defined(MBEDTLS_SSL_PROTO_DTLS) && defined(MBEDTLS_SSL_SRV_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;
|
|
mbedtls_ssl_cookie_ctx cookie_ctx;
|
|
unsigned char buf[4096];
|
|
fuzzBufferOffset_t biomemfuzz;
|
|
|
|
if (initialized == 0) {
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C)
|
|
mbedtls_x509_crt_init( &srvcert );
|
|
mbedtls_pk_init( &pkey );
|
|
if (mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
|
|
mbedtls_test_srv_crt_len ) != 0)
|
|
return 1;
|
|
if (mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
|
|
mbedtls_test_cas_pem_len ) != 0)
|
|
return 1;
|
|
if (mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
|
|
mbedtls_test_srv_key_len, NULL, 0 ) != 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_cookie_init( &cookie_ctx );
|
|
|
|
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_SERVER,
|
|
MBEDTLS_SSL_TRANSPORT_DATAGRAM,
|
|
MBEDTLS_SSL_PRESET_DEFAULT ) != 0 )
|
|
goto exit;
|
|
|
|
|
|
srand(1);
|
|
mbedtls_ssl_conf_rng( &conf, dummy_random, &ctr_drbg );
|
|
|
|
#if defined(MBEDTLS_X509_CRT_PARSE_C)
|
|
mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
|
|
if( mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) != 0 )
|
|
goto exit;
|
|
#endif
|
|
|
|
if( mbedtls_ssl_cookie_setup( &cookie_ctx, dummy_random, &ctr_drbg ) != 0 )
|
|
goto exit;
|
|
|
|
mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check, &cookie_ctx );
|
|
|
|
if( mbedtls_ssl_setup( &ssl, &conf ) != 0 )
|
|
goto exit;
|
|
|
|
mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
|
|
mbedtls_timing_get_delay );
|
|
|
|
biomemfuzz.Data = Data;
|
|
biomemfuzz.Size = Size;
|
|
biomemfuzz.Offset = 0;
|
|
mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout );
|
|
if( mbedtls_ssl_set_client_transport_id( &ssl, client_ip, sizeof(client_ip) ) != 0 )
|
|
goto exit;
|
|
|
|
ret = mbedtls_ssl_handshake( &ssl );
|
|
|
|
if (ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED) {
|
|
biomemfuzz.Offset = ssl.next_record_offset;
|
|
mbedtls_ssl_session_reset( &ssl );
|
|
mbedtls_ssl_set_bio( &ssl, &biomemfuzz, dummy_send, fuzz_recv, fuzz_recv_timeout );
|
|
if( mbedtls_ssl_set_client_transport_id( &ssl, client_ip, sizeof(client_ip) ) != 0 )
|
|
goto exit;
|
|
|
|
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_ssl_cookie_free( &cookie_ctx );
|
|
mbedtls_entropy_free( &entropy );
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
|
mbedtls_ssl_config_free( &conf );
|
|
mbedtls_ssl_free( &ssl );
|
|
|
|
#else
|
|
(void) Data;
|
|
(void) Size;
|
|
#endif
|
|
return 0;
|
|
}
|