2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL licenses, (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 * https://www.openssl.org/source/license.html
8 * or in the file LICENSE in the source distribution.
11 #include <openssl/rand.h>
12 #include <openssl/ssl.h>
13 #include <openssl/rsa.h>
14 #include <openssl/err.h>
17 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
18 extern int rand_predictable
;
20 #define ENTROPY_NEEDED 32
22 /* unused, to avoid warning. */
25 int FuzzerInitialize(int *argc
, char ***argv
)
27 STACK_OF(SSL_COMP
) *comp_methods
;
29 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS
| OPENSSL_INIT_ASYNC
, NULL
);
30 OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
);
32 CRYPTO_free_ex_index(0, -1);
33 idx
= SSL_get_ex_data_X509_STORE_CTX_idx();
34 RAND_add("", 1, ENTROPY_NEEDED
);
36 RSA_get_default_method();
37 comp_methods
= SSL_COMP_get_compression_methods();
38 OPENSSL_sk_sort((OPENSSL_STACK
*)comp_methods
);
41 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
48 int FuzzerTestOneInput(const uint8_t *buf
, size_t len
)
59 * TODO: use the ossltest engine (optionally?) to disable crypto checks.
62 /* This only fuzzes the initial flow from the client so far. */
63 ctx
= SSL_CTX_new(SSLv23_method());
65 client
= SSL_new(ctx
);
66 in
= BIO_new(BIO_s_mem());
67 out
= BIO_new(BIO_s_mem());
68 SSL_set_bio(client
, in
, out
);
69 SSL_set_connect_state(client
);
70 OPENSSL_assert((size_t)BIO_write(in
, buf
, len
) == len
);
71 if (SSL_do_handshake(client
) == 1) {
72 /* Keep reading application data until error or EOF. */
75 if (SSL_read(client
, tmp
, sizeof(tmp
)) <= 0) {
87 void FuzzerCleanup(void)