And client fuzzer

-}

IF[{- !$disabled{"fuzz-afl"} || !$disabled{"fuzz-libfuzzer"} -}]

  PROGRAMS_NO_INST=asn1 asn1parse bignum bndiv conf crl server x509

  PROGRAMS_NO_INST=asn1 asn1parse bignum bndiv client conf crl server x509

  IF[{- !$disabled{"cms"} -}]

    PROGRAMS_NO_INST=cms

  INCLUDE[bndiv]=../include {- $ex_inc -}

  DEPEND[bndiv]=../libcrypto {- $ex_lib -}

  SOURCE[client]=client.c driver.c

  INCLUDE[client]=../include {- $ex_inc -}

  DEPEND[client]=../libcrypto ../libssl {- $ex_lib -}

  SOURCE[cms]=cms.c driver.c

  INCLUDE[cms]=../include {- $ex_inc -}

  DEPEND[cms]=../libcrypto {- $ex_lib -}

ENDIF

IF[{- !$disabled{tests} -}]

  PROGRAMS_NO_INST=asn1-test asn1parse-test bignum-test bndiv-test conf-test crl-test server-test x509-test

  PROGRAMS_NO_INST=asn1-test asn1parse-test bignum-test bndiv-test client-test conf-test crl-test server-test x509-test

  IF[{- !$disabled{"cms"} -}]

    PROGRAMS_NO_INST=cms-test

  INCLUDE[bndiv-test]=../include

  DEPEND[bndiv-test]=../libcrypto

  SOURCE[client-test]=client.c test-corpus.c

  INCLUDE[client-test]=../include

  DEPEND[client-test]=../libcrypto ../libssl

  SOURCE[cms-test]=cms.c test-corpus.c

  INCLUDE[cms-test]=../include

  DEPEND[cms-test]=../libcrypto

/*

 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL licenses, (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 * https://www.openssl.org/source/license.html

 * or in the file LICENSE in the source distribution.

 */

#include <openssl/rand.h>

#include <openssl/ssl.h>

#include <openssl/rsa.h>

#include <openssl/err.h>

#include "fuzzer.h"

#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION

extern int rand_predictable;

#endif

#define ENTROPY_NEEDED 32

/* unused, to avoid warning. */

static int idx;

int FuzzerInitialize(int *argc, char ***argv)

{

    STACK_OF(SSL_COMP) *comp_methods;

    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_ASYNC, NULL);

    OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);

    ERR_get_state();

    CRYPTO_free_ex_index(0, -1);

    idx = SSL_get_ex_data_X509_STORE_CTX_idx();

    RAND_add("", 1, ENTROPY_NEEDED);

    RAND_status();

    RSA_get_default_method();

    comp_methods = SSL_COMP_get_compression_methods();

    OPENSSL_sk_sort((OPENSSL_STACK *)comp_methods);

#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION

    rand_predictable = 1;

#endif

    return 1;

}

int FuzzerTestOneInput(const uint8_t *buf, size_t len)

{

    SSL *client;

    BIO *in;

    BIO *out;

    SSL_CTX *ctx;

    if (len == 0)

        return 0;

    /*

     * TODO: use the ossltest engine (optionally?) to disable crypto checks.

     */

    /* This only fuzzes the initial flow from the client so far. */

    ctx = SSL_CTX_new(SSLv23_method());

    client = SSL_new(ctx);

    in = BIO_new(BIO_s_mem());

    out = BIO_new(BIO_s_mem());

    SSL_set_bio(client, in, out);

    SSL_set_connect_state(client);

    OPENSSL_assert((size_t)BIO_write(in, buf, len) == len);

    if (SSL_do_handshake(client) == 1) {

        /* Keep reading application data until error or EOF. */

        uint8_t tmp[1024];

        for (;;) {

            if (SSL_read(client, tmp, sizeof(tmp)) <= 0) {

                break;

            }

        }

    }

    SSL_free(client);

    ERR_clear_error();

    SSL_CTX_free(ctx);

    return 0;

}

void FuzzerCleanup(void)

{

}

setup("test_fuzz");

my @fuzzers = ('asn1', 'asn1parse', 'bignum', 'bndiv', 'conf', 'crl', 'server', 'x509');

my @fuzzers = ('asn1', 'asn1parse', 'bignum', 'bndiv', 'client', 'conf', 'crl', 'server', 'x509');

if (!disabled("cms")) {

    push @fuzzers, 'cms';

}