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Diffstat (limited to 'tools/make-no-reassembly-profile.py')
-rwxr-xr-x | tools/make-no-reassembly-profile.py | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/tools/make-no-reassembly-profile.py b/tools/make-no-reassembly-profile.py new file mode 100755 index 0000000..cd68155 --- /dev/null +++ b/tools/make-no-reassembly-profile.py @@ -0,0 +1,69 @@ +#!/usr/bin/env python3 +# +# Generate preferences for a "No Reassembly" profile. +# By Gerald Combs <gerald@wireshark.org> +# +# SPDX-License-Identifier: GPL-2.0-or-later +# +'''Generate preferences for a "No Reassembly" profile.''' + +import argparse +import os.path +import re +import subprocess +import sys + +MIN_PLUGINS = 10 + +def main(): + parser = argparse.ArgumentParser(description='No reassembly profile generator') + parser.add_argument('-p', '--program-path', default=os.path.curdir, help='Path to TShark.') + parser.add_argument('-v', '--verbose', action='store_const', const=True, default=False, help='Verbose output.') + args = parser.parse_args() + + this_dir = os.path.dirname(__file__) + profile_path = os.path.join(this_dir, '..', 'resources', 'share', 'wireshark', 'profiles', 'No Reassembly', 'preferences') + + tshark_path = os.path.join(args.program_path, 'tshark') + if not os.path.isfile(tshark_path): + print('tshark not found at {}\n'.format(tshark_path)) + parser.print_usage() + sys.exit(1) + + # Make sure plugin prefs are present. + cp = subprocess.run([tshark_path, '-G', 'plugins'], stdout=subprocess.PIPE, check=True, encoding='utf-8') + plugin_lines = cp.stdout.splitlines() + dissector_count = len(tuple(filter(lambda p: re.search('\sdissector\s', p), plugin_lines))) + if dissector_count < MIN_PLUGINS: + print('Found {} plugins but require {}.'.format(dissector_count, MIN_PLUGINS)) + sys.exit(1) + + rd_pref_re = re.compile('^#\s*(.*(reassembl|desegment)\S*):\s*TRUE') + out_prefs = [ + '# Generated by ' + os.path.basename(__file__), '', + '####### Protocols ########', '', + ] + cp = subprocess.run([tshark_path, '-G', 'defaultprefs'], stdout=subprocess.PIPE, check=True, encoding='utf-8') + pref_lines = cp.stdout.splitlines() + for pref_line in pref_lines: + m = rd_pref_re.search(pref_line) + if m: + rd_pref = m.group(1) + ': FALSE' + if args.verbose is True: + print(rd_pref) + out_prefs.append(rd_pref) + + if len(pref_lines) < 5000: + print("Too few preference lines.") + sys.exit(1) + + if len(out_prefs) < 150: + print("Too few changed preferences.") + sys.exit(1) + + with open(profile_path, 'w') as profile_f: + for pref_line in out_prefs: + profile_f.write(pref_line + '\n') + +if __name__ == '__main__': + main() |