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 work in all cases (and definitely not on Windows
35 * because of the way linkers are) and callees can still get the
36 * current time instead of the fixed time. This will just result
37 * in things not being fully reproducible and have a slightly
41 time_t time(time_t *t) TIME_IMPL(t)
44 int FuzzerInitialize(int *argc, char ***argv)
46 STACK_OF(SSL_COMP) *comp_methods;
48 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);
49 OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
51 CRYPTO_free_ex_index(0, -1);
52 idx = SSL_get_ex_data_X509_STORE_CTX_idx();
53 RAND_add("", 1, ENTROPY_NEEDED);
55 comp_methods = SSL_COMP_get_compression_methods();
56 OPENSSL_sk_sort((OPENSSL_STACK *)comp_methods);
59 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
66 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
77 * TODO: use the ossltest engine (optionally?) to disable crypto checks.
80 /* This only fuzzes the initial flow from the client so far. */
81 ctx = SSL_CTX_new(SSLv23_method());
83 client = SSL_new(ctx);
84 OPENSSL_assert(SSL_set_cipher_list(client, "ALL:eNULL:@SECLEVEL=0") == 1);
85 SSL_set_tlsext_host_name(client, "localhost");
86 in = BIO_new(BIO_s_mem());
87 out = BIO_new(BIO_s_mem());
88 SSL_set_bio(client, in, out);
89 SSL_set_connect_state(client);
90 OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);
91 if (SSL_do_handshake(client) == 1) {
92 /* Keep reading application data until error or EOF. */
95 if (SSL_read(client, tmp, sizeof(tmp)) <= 0) {
107 void FuzzerCleanup(void)