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4410f9d7 | 1 | /* |
454afd98 | 2 | * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved. |
4410f9d7 | 3 | * |
0642931f | 4 | * Licensed under the Apache License 2.0 (the "License"); |
4410f9d7 KR |
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. | |
9 | */ | |
10 | ||
14a6570f | 11 | #include <time.h> |
4410f9d7 KR |
12 | #include <openssl/rand.h> |
13 | #include <openssl/ssl.h> | |
14 | #include <openssl/rsa.h> | |
76d1ba3a KR |
15 | #include <openssl/dsa.h> |
16 | #include <openssl/ec.h> | |
17 | #include <openssl/dh.h> | |
4410f9d7 KR |
18 | #include <openssl/err.h> |
19 | #include "fuzzer.h" | |
20 | ||
710769f0 RS |
21 | #include "rand.inc" |
22 | ||
852c2ed2 RS |
23 | DEFINE_STACK_OF(SSL_COMP) |
24 | ||
4410f9d7 KR |
25 | /* unused, to avoid warning. */ |
26 | static int idx; | |
27 | ||
14a6570f KR |
28 | #define FUZZTIME 1485898104 |
29 | ||
30 | #define TIME_IMPL(t) { if (t != NULL) *t = FUZZTIME; return FUZZTIME; } | |
31 | ||
32 | /* | |
b12ae4a9 AP |
33 | * This might not work in all cases (and definitely not on Windows |
34 | * because of the way linkers are) and callees can still get the | |
35 | * current time instead of the fixed time. This will just result | |
36 | * in things not being fully reproducible and have a slightly | |
37 | * different coverage. | |
14a6570f | 38 | */ |
b12ae4a9 | 39 | #if !defined(_WIN32) |
14a6570f KR |
40 | time_t time(time_t *t) TIME_IMPL(t) |
41 | #endif | |
42 | ||
4410f9d7 KR |
43 | int FuzzerInitialize(int *argc, char ***argv) |
44 | { | |
45 | STACK_OF(SSL_COMP) *comp_methods; | |
46 | ||
47 | OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL); | |
48 | OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL); | |
e5d4233f | 49 | ERR_clear_error(); |
4410f9d7 KR |
50 | CRYPTO_free_ex_index(0, -1); |
51 | idx = SSL_get_ex_data_X509_STORE_CTX_idx(); | |
9f08a1c6 | 52 | FuzzerSetRand(); |
4410f9d7 | 53 | comp_methods = SSL_COMP_get_compression_methods(); |
345bee91 MC |
54 | if (comp_methods != NULL) |
55 | sk_SSL_COMP_sort(comp_methods); | |
4410f9d7 | 56 | |
4410f9d7 KR |
57 | return 1; |
58 | } | |
59 | ||
60 | int FuzzerTestOneInput(const uint8_t *buf, size_t len) | |
61 | { | |
62 | SSL *client; | |
63 | BIO *in; | |
64 | BIO *out; | |
65 | SSL_CTX *ctx; | |
66 | ||
67 | if (len == 0) | |
68 | return 0; | |
69 | ||
70 | /* | |
71 | * TODO: use the ossltest engine (optionally?) to disable crypto checks. | |
72 | */ | |
73 | ||
74 | /* This only fuzzes the initial flow from the client so far. */ | |
75 | ctx = SSL_CTX_new(SSLv23_method()); | |
76 | ||
77 | client = SSL_new(ctx); | |
07fc8d52 | 78 | OPENSSL_assert(SSL_set_min_proto_version(client, 0) == 1); |
4e995479 KR |
79 | OPENSSL_assert(SSL_set_cipher_list(client, "ALL:eNULL:@SECLEVEL=0") == 1); |
80 | SSL_set_tlsext_host_name(client, "localhost"); | |
4410f9d7 KR |
81 | in = BIO_new(BIO_s_mem()); |
82 | out = BIO_new(BIO_s_mem()); | |
83 | SSL_set_bio(client, in, out); | |
84 | SSL_set_connect_state(client); | |
85 | OPENSSL_assert((size_t)BIO_write(in, buf, len) == len); | |
86 | if (SSL_do_handshake(client) == 1) { | |
87 | /* Keep reading application data until error or EOF. */ | |
88 | uint8_t tmp[1024]; | |
89 | for (;;) { | |
90 | if (SSL_read(client, tmp, sizeof(tmp)) <= 0) { | |
91 | break; | |
92 | } | |
93 | } | |
94 | } | |
95 | SSL_free(client); | |
96 | ERR_clear_error(); | |
97 | SSL_CTX_free(ctx); | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | void FuzzerCleanup(void) | |
103 | { | |
104 | } |