lib/fuzzing/fuzz_sess_crypt_blob.c

   1 /*
   2    Fuzzing sess_*crypt_blob
   3    Copyright (C) Catalyst IT 2020
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18 #include "includes.h"
  19 #include "fuzzing/fuzzing.h"
  20 #include "libcli/auth/libcli_auth.h"
  21 #include "session.h"
  22
  23 int LLVMFuzzerInitialize(int *argc, char ***argv)
  24 {
  25         return 0;
  26 }
  27
  28
  29 int LLVMFuzzerTestOneInput(const uint8_t *input, size_t len)
  30 {
  31         TALLOC_CTX *mem_ctx = NULL;
  32         DATA_BLOB blob, session_key, out;
  33         size_t slen;
  34         if (len < 1) {
  35                 return 0;
  36         }
  37
  38         slen = input[0];
  39         if (len < slen + 1) {
  40                 return 0;
  41         }
  42
  43         session_key.data = input + 1;
  44         session_key.length = slen;
  45         blob.data = input + 1 + slen;
  46         blob.length = len - slen - 1;
  47
  48         mem_ctx = talloc_new(NULL);
  49
  50         out = sess_encrypt_blob(mem_ctx, &blob, &session_key);
  51         sess_decrypt_blob(mem_ctx, &blob, &session_key, &out);
  52
  53         TALLOC_FREE(mem_ctx);
  54         return 0;
  55 }