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# ------------------------------------------------------------------
#
# Copyright (C) 2015 Christian Boltz <apparmor@cboltz.de>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
try:
import cgitb
except ImportError:
cgitb = None
pass
import sys
import traceback
from tempfile import NamedTemporaryFile
from apparmor.common import error
#
# Exception handling
#
def handle_exception(*exc_info):
"""Used as exception handler in the aa-* tools.
For AppArmorException (used for profile syntax errors etc.), print only the exceptions
value because a backtrace is superfluous and would confuse users.
For other exceptions, print backtrace and save detailed information in a file in /tmp/
(including variable content etc.) to make debugging easier.
"""
(ex_cls, ex, tb) = exc_info
if ex_cls.__name__ == 'AppArmorException': # I didn't find a way to get this working with isinstance() :-/
print('', file=sys.stderr)
error(ex.value)
else:
if cgitb:
with NamedTemporaryFile('w', prefix='apparmor-bugreport-', suffix='.txt', delete=False) as file:
cgitb_hook = cgitb.Hook(display=1, file=file, format='text', context=10)
cgitb_hook.handle(exc_info)
file.write('Please consider reporting a bug at https://gitlab.com/apparmor/apparmor/-/issues\n')
file.write('and attach this file.\n')
print(''.join(traceback.format_exception(*exc_info)), file=sys.stderr)
print('An unexpected error occurred!', file=sys.stderr)
print('', file=sys.stderr)
if cgitb:
print('For details, see %s' % file.name, file=sys.stderr)
print('Please consider reporting a bug at https://gitlab.com/apparmor/apparmor/-/issues', file=sys.stderr)
if cgitb:
print('and attach this file.', file=sys.stderr)
def enable_aa_exception_handler():
"""Setup handle_exception() as exception handler"""
sys.excepthook = handle_exception
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