1 /* 2 * Copyright 2022-2023 The OpenSSL Project Authors. All Rights Reserved. 3 * 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. 9 */ 10 11 #include <openssl/pem.h> 12 #include <openssl/err.h> 13 #include "fuzzer.h" 14 15 int FuzzerInitialize(int *argc, char ***argv) 16 { 17 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL); 18 ERR_clear_error(); 19 CRYPTO_free_ex_index(0, -1); 20 return 1; 21 } 22 23 int FuzzerTestOneInput(const uint8_t *buf, size_t len) 24 { 25 BIO *in; 26 char *name = NULL, *header = NULL; 27 unsigned char *data = NULL; 28 long outlen; 29 30 if (len <= 1) 31 return 0; 32 33 in = BIO_new(BIO_s_mem()); 34 OPENSSL_assert((size_t)BIO_write(in, buf + 1, len - 1) == len - 1); 35 if (PEM_read_bio_ex(in, &name, &header, &data, &outlen, buf[0]) == 1) { 36 /* Try to read all the data we get to see if allocated properly. */ 37 BIO_write(in, name, strlen(name)); 38 BIO_write(in, header, strlen(header)); 39 BIO_write(in, data, outlen); 40 } 41 if (buf[0] & PEM_FLAG_SECURE) { 42 OPENSSL_secure_free(name); 43 OPENSSL_secure_free(header); 44 OPENSSL_secure_free(data); 45 } else { 46 OPENSSL_free(name); 47 OPENSSL_free(header); 48 OPENSSL_free(data); 49 } 50 51 BIO_free(in); 52 ERR_clear_error(); 53 54 return 0; 55 } 56 57 void FuzzerCleanup(void) 58 { 59 } 60