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      1 /*
      2  * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 #include "crypto/punycode.h"
     11 #include "internal/nelem.h"
     12 #include <openssl/crypto.h>
     13 #include "fuzzer.h"
     14 
     15 #include <stdio.h>
     16 #include <string.h>
     17 
     18 int FuzzerInitialize(int *argc, char ***argv)
     19 {
     20     return 1;
     21 }
     22 
     23 int FuzzerTestOneInput(const uint8_t *buf, size_t len)
     24 {
     25     char *b;
     26     unsigned int out[16], outlen = OSSL_NELEM(out);
     27     char outc[16];
     28 
     29     b = OPENSSL_malloc(len + 1);
     30     if (b != NULL) {
     31         ossl_punycode_decode((const char *)buf, len, out, &outlen);
     32         memcpy(b, buf, len);
     33         b[len] = '\0';
     34         ossl_a2ulabel(b, outc, sizeof(outc));
     35         OPENSSL_free(b);
     36     }
     37     return 0;
     38 }
     39 
     40 void FuzzerCleanup(void)
     41 {
     42 }
     43