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#!/usr/bin/python
# coding: utf-8
import os
import subprocess
import unittest
import tempfile
import shutil
import errno
import platform
import time
import traceback
import uuid
import sys
import stat
import traceback
def find_securefs_binary():
for f in (os.path.join(
os.environ.get('build_config_type', '.'), 'securefs'),
'./securefs'):
try:
st = os.stat(f)
except EnvironmentError:
continue
else:
mode = st.st_mode
if stat.S_ISREG(mode) and (mode & stat.S_IEXEC):
return f
raise RuntimeError('securefs binary not found')
SECUREFS_BINARY = find_securefs_binary()
if platform.system() == 'Darwin':
UNMOUNT = ['umount']
try:
import xattr
except ImportError:
sys.stderr.write(
'Importing module "xattr" failed. Testing for extended attribute support is skipped\n'
)
xattr = None
else:
UNMOUNT = ['fusermount', '-u']
xattr = None
class TimeoutException(BaseException):
def __init__(self):
BaseException.__init__(self, "Operation timeout")
def securefs_mount(data_dir, mount_point, password):
p = subprocess.Popen(
[
SECUREFS_BINARY, 'mount', '--log', 'XXXX.log', '--trace',
'--background', data_dir, mount_point
],
stdin=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = p.communicate(input=password + '\n')
if p.returncode:
raise RuntimeError(err)
for i in xrange(100):
time.sleep(0.1)
try:
if os.path.ismount(mount_point):
return
except EnvironmentError:
traceback.print_exc()
raise TimeoutException()
def securefs_unmount(mount_point):
p = subprocess.Popen(UNMOUNT + [mount_point], stderr=subprocess.PIPE)
out, err = p.communicate()
if p.returncode:
raise RuntimeError(err)
for i in xrange(100):
time.sleep(0.1)
try:
if not os.path.ismount(mount_point):
return
except EnvironmentError:
traceback.print_exc()
raise TimeoutException()
def securefs_create(data_dir, password, version):
p = subprocess.Popen(
[
SECUREFS_BINARY, 'create', '--format',
str(version), data_dir, '--rounds', '4'
],
stdin=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = p.communicate(input=password + '\n')
if p.returncode:
raise RuntimeError(err)
def make_test_case(format_version):
class SimpleSecureFSTestBase(unittest.TestCase):
@classmethod
def setUpClass(cls):
try:
os.mkdir('tmp')
except EnvironmentError as e:
if e.errno != errno.EEXIST:
raise
cls.data_dir = tempfile.mkdtemp(
prefix='securefs.format{}.data_dir'.format(format_version),
dir='tmp')
cls.mount_point = tempfile.mkdtemp(
prefix='securefs.format{}.mount_point'.format(format_version),
dir='tmp')
cls.password = 'madoka'
securefs_create(cls.data_dir, cls.password, format_version)
securefs_mount(cls.data_dir, cls.mount_point, cls.password)
@classmethod
def tearDownClass(cls):
try:
securefs_unmount(cls.mount_point)
except:
if os.path.ismount(cls.mount_point):
raise # Still mounted
def mount(self):
securefs_mount(self.data_dir, self.mount_point, self.password)
def unmount(self):
securefs_unmount(self.mount_point)
def test_long_name(self):
try:
os.mkdir(os.path.join(self.mount_point, 'k' * 256))
self.fail('mkdir should fail')
except EnvironmentError as e:
self.assertEqual(e.errno, errno.ENAMETOOLONG)
if xattr:
def test_xattr(self):
fn = os.path.join(self.mount_point, str(uuid.uuid4()))
try:
with open(fn, 'wb') as f:
f.write('hello\n')
x = xattr.xattr(fn)
x.set('abc', 'def')
x.set('123', '456')
self.unmount()
self.mount()
self.assertEqual(x.get('abc'), 'def')
self.assertEqual(set(x.list()), {'abc', '123'})
xattr.removexattr(fn, 'abc')
self.assertEqual(set(x.list()), {'123'})
finally:
try:
os.remove(fn)
except EnvironmentError:
pass
if format_version < 4:
def test_hardlink(self):
data = os.urandom(16)
source = os.path.join(self.mount_point, str(uuid.uuid4()))
dest = os.path.join(self.mount_point, str(uuid.uuid4()))
try:
with open(source, 'wb') as f:
f.write(data)
os.link(source, dest)
source_stat = os.stat(source)
dest_stat = os.stat(dest)
self.assertEqual(source_stat.st_mode, dest_stat.st_mode)
self.assertEqual(source_stat.st_mtime, dest_stat.st_mtime)
self.assertEqual(source_stat.st_size, dest_stat.st_size)
self.assertEqual(source_stat.st_nlink, 2)
with open(dest, 'rb') as f:
self.assertEqual(data, f.read())
# Moving hard links onto each other is a no-op
os.rename(dest, source)
self.assertTrue(
os.path.isfile(dest) and os.path.isfile(source))
finally:
try:
os.remove(source)
except EnvironmentError:
pass
try:
os.remove(dest)
except EnvironmentError:
pass
def test_symlink(self):
data = os.urandom(16)
source = os.path.join(self.mount_point, str(uuid.uuid4()))
dest = os.path.join(self.mount_point, str(uuid.uuid4()))
try:
with open(source, 'wb') as f:
f.write(data)
os.symlink(source, dest)
self.assertEqual(os.readlink(dest), source)
os.remove(source)
with self.assertRaises(EnvironmentError):
with open(dest, 'rb') as f:
f.read()
finally:
try:
os.remove(source)
except EnvironmentError:
pass
try:
os.remove(dest)
except EnvironmentError:
pass
def test_rename(self):
data = os.urandom(32)
source = os.path.join(self.mount_point, str(uuid.uuid4()))
dest = os.path.join(self.mount_point, str(uuid.uuid4()))
try:
with open(source, 'wb') as f:
f.write(data)
source_stat = os.stat(source)
self.assertFalse(os.path.isfile(dest))
os.rename(source, dest)
self.assertFalse(os.path.isfile(source))
self.assertTrue(os.path.isfile(dest))
dest_stat = os.stat(dest)
self.assertEqual(source_stat.st_ino, dest_stat.st_ino)
self.assertEqual(source_stat.st_size, dest_stat.st_size)
finally:
try:
os.remove(source)
except EnvironmentError:
pass
try:
os.remove(dest)
except EnvironmentError:
pass
def test_rename_dir(self):
a = str(uuid.uuid4())
b = str(uuid.uuid4())
c = str(uuid.uuid4())
cwd = os.getcwd()
os.chdir(self.mount_point)
try:
os.mkdir(a)
os.mkdir(os.path.join(a, b))
os.mkdir(c)
os.rename(a, os.path.join(c, a))
self.assertTrue(os.path.isdir(os.path.join(c, a, b)))
finally:
try:
shutil.rmtree(a)
except EnvironmentError:
pass
try:
shutil.rmtree(c)
except:
pass
os.chdir(cwd)
def test_read_write_mkdir_listdir_remove(self):
dir_names = set(str(i) for i in xrange(3))
random_data = os.urandom(11111)
rng_filename = os.path.join(self.mount_point, 'rng')
with open(rng_filename, 'wb') as f:
f.write(random_data)
self.unmount()
self.mount()
with open(rng_filename, 'rb') as f:
self.assertEqual(f.read(), random_data)
data = '\0' * len(random_data) + '0'
with open(rng_filename, 'wb') as f:
f.write(data)
with open(rng_filename, 'rb') as f:
self.assertEqual(f.read(), data)
os.remove(rng_filename)
for n in dir_names:
os.mkdir(os.path.join(self.mount_point, n))
for n in dir_names:
os.mkdir(os.path.join(self.mount_point, '0', n))
for n in dir_names:
os.mkdir(os.path.join(self.mount_point, '0', '1', n))
self.unmount()
self.mount()
self.assertEqual(set(os.listdir(self.mount_point)), dir_names)
self.assertEqual(
set(os.listdir(os.path.join(self.mount_point, '0'))),
dir_names)
self.assertEqual(
set(os.listdir(os.path.join(self.mount_point, '0', '1'))),
dir_names)
for dn in dir_names:
shutil.rmtree(os.path.join(self.mount_point, dn))
if format_version == 3:
def test_time(self):
rand_dirname = os.path.join(self.mount_point,
str(uuid.uuid4()))
os.mkdir(rand_dirname)
st = os.stat(rand_dirname)
self.assertTrue(st.st_atime == st.st_ctime and
st.st_ctime == st.st_mtime)
self.assertAlmostEqual(st.st_atime, time.time(), delta=10)
rand_filename = os.path.join(rand_dirname, 'abc')
with open(rand_filename, 'w') as f:
f.write('1')
os.utime(rand_filename, (1000., 1000.))
st = os.stat(rand_filename)
self.assertEqual(st.st_mtime, 1000)
with open(rand_filename, 'w') as f:
f.write('1')
st = os.stat(rand_filename)
self.assertAlmostEqual(st.st_ctime, time.time(), delta=10)
return SimpleSecureFSTestBase
class TestVersion1(make_test_case(1)):
pass
class TestVersion2(make_test_case(2)):
pass
class TestVersion3(make_test_case(3)):
pass
class TestVersion4(make_test_case(4)):
pass
if __name__ == '__main__':
unittest.main()
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