tools/ipc_fuzzer/remove_close_messages.py

   1 #!/usr/bin/env python
   2 # Copyright 2014 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Removes ViewHostMsg_Close and alike from testcases. These messages are an
   7 annoyance for corpus distillation. They cause the browser to exit, so no
   8 further messages are processed. On the other hand, ViewHostMsg_Close is useful
   9 for fuzzing - many found bugs are related to a renderer disappearing. So the
  10 fuzzer should be crafting random ViewHostMsg_Close messages.
  11 """
  12
  13 import argparse
  14 import os
  15 import platform
  16 import shutil
  17 import subprocess
  18 import sys
  19 import tempfile
  20
  21 def create_temp_file():
  22   temp_file = tempfile.NamedTemporaryFile(delete=False)
  23   temp_file.close()
  24   return temp_file.name
  25
  26 def main():
  27   desc = 'Remove ViewHostMsg_Close and alike from the testcases.'
  28   parser = argparse.ArgumentParser(description=desc)
  29   parser.add_argument('--out-dir', dest='out_dir', default='out',
  30                       help='ouput directory under src/ directory')
  31   parser.add_argument('--build-type', dest='build_type', default='Release',
  32                       help='Debug vs. Release build')
  33   parser.add_argument('testcase_dir',
  34                       help='Directory containing testcases')
  35   parsed = parser.parse_args()
  36
  37   message_util_binary = 'ipc_message_util'
  38
  39   script_path = os.path.realpath(__file__)
  40   ipc_fuzzer_dir = os.path.dirname(script_path)
  41   src_dir = os.path.abspath(os.path.join(ipc_fuzzer_dir, os.pardir, os.pardir))
  42   out_dir =  os.path.join(src_dir, parsed.out_dir);
  43   build_dir = os.path.join(out_dir, parsed.build_type)
  44
  45   message_util_path = os.path.join(build_dir, message_util_binary)
  46   if not os.path.exists(message_util_path):
  47     print 'ipc_message_util executable not found at ', message_util_path
  48     return 1
  49
  50   filter_command = [
  51     message_util_path,
  52     '--invert',
  53     '--regexp=ViewHostMsg_Close|ViewHostMsg_ClosePage_ACK',
  54     'input',
  55     'output',
  56   ]
  57
  58   testcase_list = os.listdir(parsed.testcase_dir)
  59   testcase_count = len(testcase_list)
  60   index = 0
  61   for testcase in testcase_list:
  62     index += 1
  63     print '[%d/%d] Processing %s' % (index, testcase_count, testcase)
  64     testcase_path = os.path.join(parsed.testcase_dir, testcase)
  65     filtered_path = create_temp_file()
  66     filter_command[-2] = testcase_path
  67     filter_command[-1] = filtered_path
  68     subprocess.call(filter_command)
  69     shutil.move(filtered_path, testcase_path)
  70
  71   return 0
  72
  73
  74 if __name__ == "__main__":
  75   sys.exit(main())