* or in the file LICENSE in the source distribution.
*/
-// Shamelessly copied from BoringSSL and converted to C.
+/* Shamelessly copied from BoringSSL and converted to C. */
-// Test first part of SSL server handshake.
+/* Test first part of SSL server handshake. */
#include <openssl/rand.h>
#include <openssl/ssl.h>
+#include <openssl/rsa.h>
+#include <openssl/err.h>
#include "fuzzer.h"
static const uint8_t kCertificateDER[] = {
0x98, 0x46, 0x89, 0x82, 0x40,
};
-static SSL_CTX *ctx;
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+extern int rand_predictable;
+#endif
+#define ENTROPY_NEEDED 32
-static void Init() {
- ctx = SSL_CTX_new(SSLv23_method());
+/* unused, to avoid warning. */
+static int idx;
+
+int FuzzerInitialize(int *argc, char ***argv)
+{
+ STACK_OF(SSL_COMP) *comp_methods;
+
+ OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);
+ OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
+ ERR_get_state();
+ CRYPTO_free_ex_index(0, -1);
+ idx = SSL_get_ex_data_X509_STORE_CTX_idx();
+ RAND_add("", 1, ENTROPY_NEEDED);
+ RAND_status();
+ RSA_get_default_method();
+ comp_methods = SSL_COMP_get_compression_methods();
+ OPENSSL_sk_sort((OPENSSL_STACK *)comp_methods);
+
+
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+ rand_predictable = 1;
+#endif
+
+ return 1;
+}
+
+int FuzzerTestOneInput(const uint8_t *buf, size_t len)
+{
+ SSL *server;
+ BIO *in;
+ BIO *out;
+ SSL_CTX *ctx;
+ int ret;
+ RSA *privkey;
const uint8_t *bufp = kRSAPrivateKeyDER;
- RSA *privkey = d2i_RSAPrivateKey(NULL, &bufp, sizeof(kRSAPrivateKeyDER));
+ EVP_PKEY *pkey;
+ X509 *cert;
+
+ if (len == 0)
+ return 0;
+
+ /*
+ * TODO: use the ossltest engine (optionally?) to disable crypto checks.
+ */
+
+ /* This only fuzzes the initial flow from the client so far. */
+ ctx = SSL_CTX_new(SSLv23_method());
+ privkey = d2i_RSAPrivateKey(NULL, &bufp, sizeof(kRSAPrivateKeyDER));
OPENSSL_assert(privkey != NULL);
- EVP_PKEY *pkey = EVP_PKEY_new();
+ pkey = EVP_PKEY_new();
EVP_PKEY_assign_RSA(pkey, privkey);
- int ret = SSL_CTX_use_PrivateKey(ctx, pkey);
+ ret = SSL_CTX_use_PrivateKey(ctx, pkey);
OPENSSL_assert(ret == 1);
EVP_PKEY_free(pkey);
+
bufp = kCertificateDER;
- X509 *cert = d2i_X509(NULL, &bufp, sizeof(kCertificateDER));
+ cert = d2i_X509(NULL, &bufp, sizeof(kCertificateDER));
OPENSSL_assert(cert != NULL);
ret = SSL_CTX_use_certificate(ctx, cert);
OPENSSL_assert(ret == 1);
X509_free(cert);
- }
-
-int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) {
- if (ctx == NULL)
- Init();
- // TODO: make this work for OpenSSL. There's a PREDICT define that may do
- // the job.
- // TODO: use the ossltest engine (optionally?) to disable crypto checks.
- //RAND_reset_for_fuzzing();
-
- // This only fuzzes the initial flow from the client so far.
- SSL *server = SSL_new(ctx);
- BIO *in = BIO_new(BIO_s_mem());
- BIO *out = BIO_new(BIO_s_mem());
+
+ server = SSL_new(ctx);
+ in = BIO_new(BIO_s_mem());
+ out = BIO_new(BIO_s_mem());
SSL_set_bio(server, in, out);
SSL_set_accept_state(server);
OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);
if (SSL_do_handshake(server) == 1) {
- // Keep reading application data until error or EOF.
+ /* Keep reading application data until error or EOF. */
uint8_t tmp[1024];
for (;;) {
if (SSL_read(server, tmp, sizeof(tmp)) <= 0) {
}
}
SSL_free(server);
+ ERR_clear_error();
+ SSL_CTX_free(ctx);
+
return 0;
}
+
+void FuzzerCleanup(void)
+{
+}