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