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.
12 #include <openssl/rand.h>
13 #include <openssl/ssl.h>
14 #include <openssl/rsa.h>
15 #include <openssl/dsa.h>
16 #include <openssl/ec.h>
17 #include <openssl/dh.h>
18 #include <openssl/err.h>
21 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
22 extern int rand_predictable;
24 #define ENTROPY_NEEDED 32
26 /* unused, to avoid warning. */
29 #define FUZZTIME 1485898104
31 #define TIME_IMPL(t) { if (t != NULL) *t = FUZZTIME; return FUZZTIME; }
34 * This might not in all cases and still get the current time
35 * instead of the fixed time. This will just result in things
36 * not being fully reproducible and have a slightly different
39 #if defined(_WIN32) && defined(_TIME64_T_DEFINED)
40 time64_t _time64(time64_t *t) TIME_IMPL(t)
42 #if !defined(_WIN32) || !defined(_MSC_VER)
43 time_t time(time_t *t) TIME_IMPL(t)
46 int FuzzerInitialize(int *argc, char ***argv)
48 STACK_OF(SSL_COMP) *comp_methods;
50 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);
51 OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
53 CRYPTO_free_ex_index(0, -1);
54 idx = SSL_get_ex_data_X509_STORE_CTX_idx();
55 RAND_add("", 1, ENTROPY_NEEDED);
57 comp_methods = SSL_COMP_get_compression_methods();
58 OPENSSL_sk_sort((OPENSSL_STACK *)comp_methods);
61 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
68 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
79 * TODO: use the ossltest engine (optionally?) to disable crypto checks.
82 /* This only fuzzes the initial flow from the client so far. */
83 ctx = SSL_CTX_new(SSLv23_method());
85 client = SSL_new(ctx);
86 OPENSSL_assert(SSL_set_cipher_list(client, "ALL:eNULL:@SECLEVEL=0") == 1);
87 SSL_set_tlsext_host_name(client, "localhost");
88 in = BIO_new(BIO_s_mem());
89 out = BIO_new(BIO_s_mem());
90 SSL_set_bio(client, in, out);
91 SSL_set_connect_state(client);
92 OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);
93 if (SSL_do_handshake(client) == 1) {
94 /* Keep reading application data until error or EOF. */
97 if (SSL_read(client, tmp, sizeof(tmp)) <= 0) {
109 void FuzzerCleanup(void)