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# vim: set fileencoding=utf-8 :
# (C) 2014 Guido Günther <agx@sigxcpu.org>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Test L{whatmaps.process} config"""
import os
import unittest
import random
from whatmaps.process import Process
from . import context
class TestWhatmapsProcess(unittest.TestCase):
def setUp(self):
self.tmpdir = context.new_tmpdir(__name__)
self.procfs = str(self.tmpdir)
self.pid = random.randint(1, 65535)
self.piddir = os.path.join(self.procfs, str(self.pid))
os.mkdir(self.piddir)
self.exe = os.path.join(self.piddir, 'exe')
self.cmdline = os.path.join(self.piddir, 'cmdline')
self.maps = os.path.join(self.piddir, 'maps')
self._write_cmdline('doesnotmatter') # Write at least an empty cmdline
self._write_exe_symlink('acommand')
self._write_maps([['f32b43221000-7f32b4522000',
'---p',
'00020000',
'fe:02',
'1704011',
'/lib/x86_64-linux-gnu/libselinux.so.1'],
['7f32b4521000-7f32b4623000',
'r--p',
'00020000',
'fe:02',
'1704011',
'/lib/x86_64-linux-gnu/libselinux.so.1'],
])
def _write_exe_symlink(self, name):
exe = os.path.join(str(self.tmpdir), name)
os.symlink(exe, self.exe)
def _write_cmdline(self, text=''):
f = open(self.cmdline, 'w')
f.write(text)
f.close()
def _write_maps(self, data):
f = open(self.maps, 'w')
f.write('\n'.join([' '.join(r) for r in data]))
f.close()
def test_nonexistent(self):
"""No exe link should create an 'empty' object"""
os.unlink(self.exe)
p = Process(self.pid, self.procfs)
self.assertIsNone(p.exe)
self.assertIsNone(p.cmdline)
def test_deleted(self):
"""Handle symlink to deleted binaries"""
exe = '/does/not/matter'
os.unlink(self.exe)
os.symlink(os.path.join(self.piddir, '%s (deleted)' % exe),
self.exe)
p = Process(self.pid, procfs=self.procfs)
self.assertEqual(p.exe, exe)
self.assertTrue(p.deleted, True)
self.assertEqual(p.cmdline, 'doesnotmatter')
def test_existing(self):
p = Process(self.pid, procfs=self.procfs)
exe = os.path.join(str(self.tmpdir), 'acommand')
self.assertEqual(p.exe, exe)
self.assertEqual(p.cmdline, 'doesnotmatter')
self.assertFalse(p.deleted)
self.assertEqual(str(p),
"<Process object pid:%d>" % self.pid)
def test_maps(self):
"""Check whether the process maps a shared object at path"""
p = Process(self.pid, procfs=self.procfs)
self.assertFalse(p.maps('/does/not/exist'))
self.assertTrue(p.maps('/lib/x86_64-linux-gnu/libselinux.so.1'))
def test_no_maps(self):
"""Check if we don't fail if the process went away"""
os.unlink(self.maps)
p = Process(self.pid, procfs=self.procfs)
self.assertFalse(p.maps('/does/not/exist'))
self.assertFalse(p.maps('/lib/x86_64-linux-gnu/libselinux.so.1'))
def test_broken_maps(self):
"""Continue on unparseable map file"""
# Provoke index error by to few items in line
self._write_maps([['do', 'few', 'items']])
p = Process(self.pid, procfs=self.procfs)
self.assertFalse(p.maps('/does/not/exist'))
self.assertFalse(p.maps('/lib/x86_64-linux-gnu/libselinux.so.1'))
@unittest.skipIf(os.getuid() == 0, "Skip if root")
def test_broken_unreadable_map(self):
"""Raise error if map file is unreadable"""
os.chmod(self.maps, 0)
p = Process(self.pid, procfs=self.procfs)
self.assertRaises(IOError, p.maps, '/does/not/exist')
def tearDown(self):
context.teardown()
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