mirror of
https://gitlab.com/apparmor/apparmor.git
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293 lines
18 KiB
Python
293 lines
18 KiB
Python
#! /usr/bin/python3
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# ------------------------------------------------------------------
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#
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# Copyright (C) 2011-2012 Canonical Ltd.
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# Copyright (C) 2019 Otto Kekäläinen
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of version 2 of the GNU General Public
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# License published by the Free Software Foundation.
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#
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# ------------------------------------------------------------------
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import os
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import signal
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import subprocess
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import tempfile
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import time
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import unittest
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from common_test import AATest, setup_all_loops, setup_aa
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import apparmor.aa as aa
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# The location of the aa-notify utility can be overridden by setting
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# the APPARMOR_NOTIFY environment variable; this is useful for running
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# these tests in an installed environment
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aanotify_bin = ["../aa-notify"]
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# http://www.chiark.greenend.org.uk/ucgi/~cjwatson/blosxom/2009-07-02-python-sigpipe.html
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# This is needed so that the subprocesses that produce endless output
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# actually quit when the reader goes away.
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def subprocess_setup():
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# Python installs a SIGPIPE handler by default. This is usually not what
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# non-Python subprocesses expect.
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signal.signal(signal.SIGPIPE, signal.SIG_DFL)
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def cmd(command):
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'''Try to execute given command (array) and return its stdout, or return
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a textual error if it failed.'''
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try:
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sp = subprocess.Popen(
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command,
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stdin=None,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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close_fds=True,
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preexec_fn=subprocess_setup
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)
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except OSError as e:
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return [127, str(e)]
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stdout, stderr = sp.communicate(input)
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# If there was some error output, show that instead of stdout to ensure
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# test fails and does not mask potentially major warnings and errors.
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if stderr:
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out = stderr
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else:
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out = stdout
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return [sp.returncode, out.decode('utf-8')]
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class AANotifyTest(AATest):
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def AASetup(self):
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'''Create temporary log file with 30 enties of different age'''
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test_logfile_contents_999_days_old = \
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'''Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834382] audit: type=1400 audit({epoch}:113): apparmor="ALLOWED" operation="exec" profile="libreoffice-soffice" name="/bin/uname" pid=4097 comm="sh" requested_mask="x" denied_mask="x" fsuid=1001 ouid=0 target="libreoffice-soffice//null-/bin/uname"
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834888] audit: type=1400 audit({epoch}:114): apparmor="ALLOWED" operation="file_inherit" profile="libreoffice-soffice//null-/bin/uname" name="/dev/null" pid=4097 comm="uname" requested_mask="w" denied_mask="w" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834890] audit: type=1400 audit({epoch}:115): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/bin/uname" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835136] audit: type=1400 audit({epoch}:116): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/ld-2.27.so" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835377] audit: type=1400 audit({epoch}:117): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/etc/ld.so.cache" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835405] audit: type=1400 audit({epoch}:118): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/libc-2.27.so" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835421] audit: type=1400 audit({epoch}:119): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/libc-2.27.so" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835696] audit: type=1400 audit({epoch}:120): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/usr/lib/locale/locale-archive" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.875891] audit: type=1400 audit({epoch}:121): apparmor="ALLOWED" operation="exec" profile="libreoffice-soffice" name="/usr/bin/file" pid=4111 comm="soffice.bin" requested_mask="x" denied_mask="x" fsuid=1001 ouid=0 target="libreoffice-soffice//null-/usr/bin/file"
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.880347] audit: type=1400 audit({epoch}:122): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/usr/bin/file" name="/usr/bin/file" pid=4111 comm="file" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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'''.format(epoch=round(time.time(), 3) - 60*60*24*999)
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test_logfile_contents_30_days_old = \
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'''Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834382] audit: type=1400 audit({epoch}:113): apparmor="ALLOWED" operation="exec" profile="libreoffice-soffice" name="/bin/uname" pid=4097 comm="sh" requested_mask="x" denied_mask="x" fsuid=1001 ouid=0 target="libreoffice-soffice//null-/bin/uname"
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834888] audit: type=1400 audit({epoch}:114): apparmor="ALLOWED" operation="file_inherit" profile="libreoffice-soffice//null-/bin/uname" name="/dev/null" pid=4097 comm="uname" requested_mask="w" denied_mask="w" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834890] audit: type=1400 audit({epoch}:115): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/bin/uname" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835136] audit: type=1400 audit({epoch}:116): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/ld-2.27.so" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835377] audit: type=1400 audit({epoch}:117): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/etc/ld.so.cache" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835405] audit: type=1400 audit({epoch}:118): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/libc-2.27.so" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835421] audit: type=1400 audit({epoch}:119): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/libc-2.27.so" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835696] audit: type=1400 audit({epoch}:120): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/usr/lib/locale/locale-archive" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.875891] audit: type=1400 audit({epoch}:121): apparmor="ALLOWED" operation="exec" profile="libreoffice-soffice" name="/usr/bin/file" pid=4111 comm="soffice.bin" requested_mask="x" denied_mask="x" fsuid=1001 ouid=0 target="libreoffice-soffice//null-/usr/bin/file"
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.880347] audit: type=1400 audit({epoch}:122): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/usr/bin/file" name="/usr/bin/file" pid=4111 comm="file" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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'''.format(epoch=round(time.time(), 3) - 60*60*24*30)
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test_logfile_contents_unrelevant_entries = \
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'''Feb 1 19:35:44 XPS-13-9370 kernel: [99848.048761] audit: type=1400 audit(1549042544.968:72): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/snap/core/6350/usr/lib/snapd/snap-confine" pid=12871 comm="apparmor_parser"
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Feb 2 00:40:09 XPS-13-9370 kernel: [103014.549071] audit: type=1400 audit(1549060809.600:89): apparmor="STATUS" operation="profile_load" profile="unconfined" name="docker-default" pid=17195 comm="apparmor_parser"
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Feb 4 20:05:42 XPS-13-9370 kernel: [132557.202931] audit: type=1400 audit(1549303542.661:136): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="snap.atom.apm" pid=11306 comm="apparmor_parser"
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'''
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test_logfile_contents_0_seconds_old = \
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'''Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834382] audit: type=1400 audit({epoch}:113): apparmor="ALLOWED" operation="exec" profile="libreoffice-soffice" name="/bin/uname" pid=4097 comm="sh" requested_mask="x" denied_mask="x" fsuid=1001 ouid=0 target="libreoffice-soffice//null-/bin/uname"
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834888] audit: type=1400 audit({epoch}:114): apparmor="ALLOWED" operation="file_inherit" profile="libreoffice-soffice//null-/bin/uname" name="/dev/null" pid=4097 comm="uname" requested_mask="w" denied_mask="w" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.834890] audit: type=1400 audit({epoch}:115): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/bin/uname" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835136] audit: type=1400 audit({epoch}:116): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/ld-2.27.so" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835377] audit: type=1400 audit({epoch}:117): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/etc/ld.so.cache" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835405] audit: type=1400 audit({epoch}:118): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/libc-2.27.so" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835421] audit: type=1400 audit({epoch}:119): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/bin/uname" name="/lib/x86_64-linux-gnu/libc-2.27.so" pid=4097 comm="uname" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.835696] audit: type=1400 audit({epoch}:120): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice//null-/bin/uname" name="/usr/lib/locale/locale-archive" pid=4097 comm="uname" requested_mask="r" denied_mask="r" fsuid=1001 ouid=0
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.875891] audit: type=1400 audit({epoch}:121): apparmor="ALLOWED" operation="exec" profile="libreoffice-soffice" name="/usr/bin/file" pid=4111 comm="soffice.bin" requested_mask="x" denied_mask="x" fsuid=1001 ouid=0 target="libreoffice-soffice//null-/usr/bin/file"
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Feb 4 13:40:38 XPS-13-9370 kernel: [128552.880347] audit: type=1400 audit({epoch}:122): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice//null-/usr/bin/file" name="/usr/bin/file" pid=4111 comm="file" requested_mask="rm" denied_mask="rm" fsuid=1001 ouid=0
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'''.format(epoch=round(time.time(), 3))
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handle, self.test_logfile = tempfile.mkstemp(prefix='test-aa-notify-')
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os.close(handle)
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handle = open(self.test_logfile, "w+")
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handle.write(
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test_logfile_contents_999_days_old +
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test_logfile_contents_30_days_old +
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test_logfile_contents_unrelevant_entries +
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test_logfile_contents_0_seconds_old
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)
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handle.close()
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def AATeardown(self):
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'''Remove temporary log file after tests ended'''
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if self.test_logfile and os.path.exists(self.test_logfile):
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os.remove(self.test_logfile)
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# The Perl aa-notify script was written so, that it will checked for kern.log
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# before printing help when invoked without arguments (sic!).
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@unittest.skipUnless(os.path.isfile('/var/log/kern.log'), 'Requires kern.log on system')
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def test_no_arguments(self):
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'''Test using no arguments at all'''
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expected_return_code = 0
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expected_output_has = 'usage: aa-notify'
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return_code, output = cmd(aanotify_bin)
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result = 'Got return code %d, expected %d\n' % (return_code, expected_return_code)
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self.assertEqual(expected_return_code, return_code, result + output)
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result = 'Got output "%s", expected "%s"\n' % (output, expected_output_has)
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self.assertIn(expected_output_has, output, result + output)
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def test_help_contents(self):
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'''Test output of help text'''
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expected_return_code = 0
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expected_output_is = \
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'''usage: aa-notify [-h] [-p] [--display DISPLAY] [-f FILE] [-l] [-s NUM] [-v]
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[-u USER] [-w NUM] [--debug]
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Display AppArmor notifications or messages for DENIED entries.
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optional arguments:
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-h, --help show this help message and exit
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-p, --poll poll AppArmor logs and display notifications
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--display DISPLAY set the DISPLAY environment variable (might be needed if
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sudo resets $DISPLAY)
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-f FILE, --file FILE search FILE for AppArmor messages
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-l, --since-last display stats since last login
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-s NUM, --since-days NUM
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show stats for last NUM days (can be used alone or with
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-p)
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-v, --verbose show messages with stats
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-u USER, --user USER user to drop privileges to when not using sudo
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-w NUM, --wait NUM wait NUM seconds before displaying notifications (with
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-p)
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--debug debug mode
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'''
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return_code, output = cmd(aanotify_bin + ['--help'])
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result = 'Got return code %d, expected %d\n' % (return_code, expected_return_code)
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self.assertEqual(expected_return_code, return_code, result + output)
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result = 'Got output "%s", expected "%s"\n' % (output, expected_output_is)
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self.assertEqual(expected_output_is, output, result + output)
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def test_entries_since_100_days(self):
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'''Test showing log entries since 100 days'''
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expected_return_code = 0
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expected_output_has = 'AppArmor denials: 20 (since'
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return_code, output = cmd(aanotify_bin + ['-f', self.test_logfile, '-s', '100'])
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result = 'Got return code %d, expected %d\n' % (return_code, expected_return_code)
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self.assertEqual(expected_return_code, return_code, result + output)
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result = 'Got output "%s", expected "%s"\n' % (output, expected_output_has)
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self.assertIn(expected_output_has, output, result + output)
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@unittest.skipUnless(os.path.isfile('/var/log/wtmp'), 'Requires wtmp on system')
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def test_entries_since_login(self):
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'''Test showing log entries since last login'''
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expected_return_code = 0
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expected_output_has = 'AppArmor denials: 10 (since'
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return_code, output = cmd(aanotify_bin + ['-f', self.test_logfile, '-l'])
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if "ERROR: Could not find last login" in output:
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self.skipTest('Could not find last login')
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result = 'Got return code %d, expected %d\n' % (return_code, expected_return_code)
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self.assertEqual(expected_return_code, return_code, result + output)
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result = 'Got output "%s", expected "%s"\n' % (output, expected_output_has)
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self.assertIn(expected_output_has, output, result + output)
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@unittest.skipUnless(os.path.isfile('/var/log/wtmp'), 'Requires wtmp on system')
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def test_entries_since_login_verbose(self):
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'''Test showing log entries since last login in verbose mode'''
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expected_return_code = 0
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expected_output_has = \
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'''Profile: libreoffice-soffice
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Operation: exec
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Name: /bin/uname
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Denied: x
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: file_inherit
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Name: /dev/null
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Denied: w
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: file_mmap
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Name: /bin/uname
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Denied: rm
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: file_mmap
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Name: /lib/x86_64-linux-gnu/ld-2.27.so
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Denied: rm
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: open
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Name: /etc/ld.so.cache
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Denied: r
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: open
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Name: /lib/x86_64-linux-gnu/libc-2.27.so
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Denied: r
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: file_mmap
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Name: /lib/x86_64-linux-gnu/libc-2.27.so
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Denied: rm
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/bin/uname
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Operation: open
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Name: /usr/lib/locale/locale-archive
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Denied: r
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Logfile: {logfile}
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Profile: libreoffice-soffice
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Operation: exec
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Name: /usr/bin/file
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Denied: x
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Logfile: {logfile}
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Profile: libreoffice-soffice//null-/usr/bin/file
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Operation: file_mmap
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Name: /usr/bin/file
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Denied: rm
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Logfile: {logfile}
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AppArmor denials: 10 (since'''.format(logfile=self.test_logfile)
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return_code, output = cmd(aanotify_bin + ['-f', self.test_logfile, '-l', '-v'])
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if "ERROR: Could not find last login" in output:
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self.skipTest('Could not find last login')
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result = 'Got return code %d, expected %d\n' % (return_code, expected_return_code)
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self.assertEqual(expected_return_code, return_code, result + output)
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result = 'Got output "%s", expected "%s"\n' % (output, expected_output_has)
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self.assertIn(expected_output_has, output, result + output)
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setup_aa(aa) # Wrapper for aa.init_aa()
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setup_all_loops(__name__)
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if __name__ == '__main__':
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if 'APPARMOR_NOTIFY' in os.environ:
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aanotify_bin = os.environ['APPARMOR_NOTIFY']
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|
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if '__AA_CONFDIR' in os.environ:
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aanotify_bin = aanotify_bin + ['--configdir', os.getenv('__AA_CONFDIR')]
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unittest.main(verbosity=1)
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