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07fc8d5207
The config file can override it. In case of the server, it needs to be set on the ctx or some of the other functions on the ctx might file. Reviewed-by: Rich Salz <rsalz@openssl.org> DH: #6718
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
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* Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL licenses, (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* https://www.openssl.org/source/license.html
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* or in the file LICENSE in the source distribution.
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*/
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#include <time.h>
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#include <openssl/rand.h>
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#include <openssl/ssl.h>
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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#include <openssl/ec.h>
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#include <openssl/dh.h>
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#include <openssl/err.h>
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#include "fuzzer.h"
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#include "rand.inc"
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/* unused, to avoid warning. */
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static int idx;
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#define FUZZTIME 1485898104
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#define TIME_IMPL(t) { if (t != NULL) *t = FUZZTIME; return FUZZTIME; }
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/*
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* This might not work in all cases (and definitely not on Windows
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* because of the way linkers are) and callees can still get the
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* current time instead of the fixed time. This will just result
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* in things not being fully reproducible and have a slightly
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* different coverage.
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*/
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#if !defined(_WIN32)
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time_t time(time_t *t) TIME_IMPL(t)
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#endif
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int FuzzerInitialize(int *argc, char ***argv)
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{
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STACK_OF(SSL_COMP) *comp_methods;
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OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);
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OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
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ERR_get_state();
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CRYPTO_free_ex_index(0, -1);
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idx = SSL_get_ex_data_X509_STORE_CTX_idx();
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FuzzerSetRand();
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comp_methods = SSL_COMP_get_compression_methods();
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sk_SSL_COMP_sort(comp_methods);
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return 1;
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}
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int FuzzerTestOneInput(const uint8_t *buf, size_t len)
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{
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SSL *client;
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BIO *in;
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BIO *out;
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SSL_CTX *ctx;
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if (len == 0)
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return 0;
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/*
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* TODO: use the ossltest engine (optionally?) to disable crypto checks.
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*/
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/* This only fuzzes the initial flow from the client so far. */
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ctx = SSL_CTX_new(SSLv23_method());
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client = SSL_new(ctx);
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OPENSSL_assert(SSL_set_min_proto_version(client, 0) == 1);
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OPENSSL_assert(SSL_set_cipher_list(client, "ALL:eNULL:@SECLEVEL=0") == 1);
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SSL_set_tlsext_host_name(client, "localhost");
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in = BIO_new(BIO_s_mem());
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out = BIO_new(BIO_s_mem());
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SSL_set_bio(client, in, out);
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SSL_set_connect_state(client);
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OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);
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if (SSL_do_handshake(client) == 1) {
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/* Keep reading application data until error or EOF. */
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uint8_t tmp[1024];
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for (;;) {
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if (SSL_read(client, tmp, sizeof(tmp)) <= 0) {
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break;
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}
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}
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}
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SSL_free(client);
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ERR_clear_error();
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SSL_CTX_free(ctx);
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return 0;
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}
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void FuzzerCleanup(void)
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{
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}
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