2 * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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 /* unused, to avoid warning. */
24 #define FUZZTIME 1485898104
26 #define TIME_IMPL(t) { if (t != NULL) *t = FUZZTIME; return FUZZTIME; }
29 * This might not work in all cases (and definitely not on Windows
30 * because of the way linkers are) and callees can still get the
31 * current time instead of the fixed time. This will just result
32 * in things not being fully reproducible and have a slightly
36 time_t time(time_t *t
) TIME_IMPL(t
)
39 int FuzzerInitialize(int *argc
, char ***argv
)
41 STACK_OF(SSL_COMP
) *comp_methods
;
44 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS
| OPENSSL_INIT_ASYNC
, NULL
);
45 OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
);
47 CRYPTO_free_ex_index(0, -1);
48 idx
= SSL_get_ex_data_X509_STORE_CTX_idx();
49 comp_methods
= SSL_COMP_get_compression_methods();
50 if (comp_methods
!= NULL
)
51 sk_SSL_COMP_sort(comp_methods
);
56 int FuzzerTestOneInput(const uint8_t *buf
, size_t len
)
67 * TODO: use the ossltest engine (optionally?) to disable crypto checks.
70 /* This only fuzzes the initial flow from the client so far. */
71 ctx
= SSL_CTX_new(SSLv23_method());
73 client
= SSL_new(ctx
);
74 OPENSSL_assert(SSL_set_min_proto_version(client
, 0) == 1);
75 OPENSSL_assert(SSL_set_cipher_list(client
, "ALL:eNULL:@SECLEVEL=0") == 1);
76 SSL_set_tlsext_host_name(client
, "localhost");
77 in
= BIO_new(BIO_s_mem());
78 out
= BIO_new(BIO_s_mem());
79 SSL_set_bio(client
, in
, out
);
80 SSL_set_connect_state(client
);
81 OPENSSL_assert((size_t)BIO_write(in
, buf
, len
) == len
);
82 if (SSL_do_handshake(client
) == 1) {
83 /* Keep reading application data until error or EOF. */
86 if (SSL_read(client
, tmp
, sizeof(tmp
)) <= 0) {
98 void FuzzerCleanup(void)