/usr/sbin/aa-genprof is in apparmor-utils 2.11.0-3+deb9u2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | #! /usr/bin/python3
# ----------------------------------------------------------------------
# Copyright (C) 2013 Kshitij Gupta <kgupta8592@gmail.com>
#
# 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 as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# ----------------------------------------------------------------------
import argparse
import atexit
import os
import re
import subprocess
import sys
import apparmor.aa as apparmor
import apparmor.ui as aaui
from apparmor.common import warn
# setup exception handling
from apparmor.fail import enable_aa_exception_handler
enable_aa_exception_handler()
# setup module translations
from apparmor.translations import init_translation
_ = init_translation()
def sysctl_read(path):
value = None
with open(path, 'r') as f_in:
value = int(f_in.readline())
return value
def sysctl_write(path, value):
if value is None:
warn('Not writing invalid value "None" to %s'%path)
return
with open(path, 'w') as f_out:
f_out.write(str(value))
def last_audit_entry_time():
out = subprocess.check_output(['tail', '-1', apparmor.logfile])
logmark = None
out = out.decode('ascii')
if re.search('^.*msg\=audit\((\d+\.\d+\:\d+).*\).*$', out):
logmark = re.search('^.*msg\=audit\((\d+\.\d+\:\d+).*\).*$', out).groups()[0]
else:
logmark = ''
return logmark
def restore_ratelimit():
sysctl_write(ratelimit_sysctl, ratelimit_saved)
parser = argparse.ArgumentParser(description=_('Generate profile for the given program'))
parser.add_argument('-d', '--dir', type=str, help=_('path to profiles'))
parser.add_argument('-f', '--file', type=str, help=_('path to logfile'))
parser.add_argument('program', type=str, help=_('name of program to profile'))
args = parser.parse_args()
profiling = args.program
profiledir = args.dir
apparmor.set_logfile(args.file)
aa_mountpoint = apparmor.check_for_apparmor()
if not aa_mountpoint:
raise apparmor.AppArmorException(_('It seems AppArmor was not started. Please enable AppArmor and try again.'))
if profiledir:
apparmor.profile_dir = apparmor.get_full_path(profiledir)
if not os.path.isdir(apparmor.profile_dir):
raise apparmor.AppArmorException(_("%s is not a directory.") %profiledir)
program = None
#if os.path.exists(apparmor.which(profiling.strip())):
if os.path.exists(profiling):
program = apparmor.get_full_path(profiling)
else:
if '/' not in profiling:
which = apparmor.which(profiling)
if which:
program = apparmor.get_full_path(which)
if not program or not os.path.exists(program):
if '/' not in profiling:
raise apparmor.AppArmorException(_("Can't find %(profiling)s in the system path list. If the name of the application\nis correct, please run 'which %(profiling)s' as a user with correct PATH\nenvironment set up in order to find the fully-qualified path and\nuse the full path as parameter.") % { 'profiling': profiling })
else:
raise apparmor.AppArmorException(_('%s does not exists, please double-check the path.') %profiling)
# Check if the program has been marked as not allowed to have a profile
apparmor.check_qualifiers(program)
apparmor.loadincludes()
profile_filename = apparmor.get_profile_filename(program)
if os.path.exists(profile_filename):
apparmor.helpers[program] = apparmor.get_profile_flags(profile_filename, program)
else:
apparmor.autodep(program)
apparmor.helpers[program] = 'enforce'
if apparmor.helpers[program] == 'enforce':
apparmor.complain(program)
apparmor.reload(program)
# When reading from syslog, it is possible to hit the default kernel
# printk ratelimit. This will result in audit entries getting skipped,
# making profile generation inaccurate. When using genprof, disable
# the printk ratelimit, and restore it on exit.
ratelimit_sysctl = '/proc/sys/kernel/printk_ratelimit'
ratelimit_saved = sysctl_read(ratelimit_sysctl)
sysctl_write(ratelimit_sysctl, 0)
atexit.register(restore_ratelimit)
aaui.UI_Info(_('\nBefore you begin, you may wish to check if a\nprofile already exists for the application you\nwish to confine. See the following wiki page for\nmore information:')+'\nhttp://wiki.apparmor.net/index.php/Profiles')
aaui.UI_Important(_('Please start the application to be profiled in\nanother window and exercise its functionality now.\n\nOnce completed, select the "Scan" option below in \norder to scan the system logs for AppArmor events. \n\nFor each AppArmor event, you will be given the \nopportunity to choose whether the access should be \nallowed or denied.'))
syslog = True
logmark = ''
done_profiling = False
if os.path.exists('/var/log/audit/audit.log'):
syslog = False
passno = 0
while not done_profiling:
if syslog:
logmark = subprocess.check_output(['date | md5sum'], shell=True)
logmark = logmark.decode('ascii').strip()
logmark = re.search('^([0-9a-f]+)', logmark).groups()[0]
t=subprocess.call("%s -p kern.warn 'GenProf: %s'"%(apparmor.logger_path(), logmark), shell=True)
else:
logmark = last_audit_entry_time()
q = aaui.PromptQuestion()
q.headers = [_('Profiling'), program]
q.functions = ['CMD_SCAN', 'CMD_FINISHED']
q.default = 'CMD_SCAN'
ans, arg = q.promptUser('noexit')
if ans == 'CMD_SCAN':
lp_ret = apparmor.do_logprof_pass(logmark, passno)
passno += 1
if lp_ret == 'FINISHED':
done_profiling = True
else:
done_profiling = True
for p in sorted(apparmor.helpers.keys()):
if apparmor.helpers[p] == 'enforce':
apparmor.enforce(p)
apparmor.reload(p)
aaui.UI_Info(_('\nReloaded AppArmor profiles in enforce mode.'))
aaui.UI_Info(_('\nPlease consider contributing your new profile!\nSee the following wiki page for more information:')+'\nhttp://wiki.apparmor.net/index.php/Profiles\n')
aaui.UI_Info(_('Finished generating profile for %s.')%program)
sys.exit(0)
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