def __init__(self, logfile=None, loglevel='info'):
self.loglevel = loglevel
# Non-public.
self._stack = ExitStack()
self._stoppers = []
# Public.
self.tmpdir = self._stack.enter_context(temporary_directory())
self.config_path = os.path.join(self.tmpdir, 'dbus-system.conf')
self.serverdir = self._stack.enter_context(temporary_directory())
self.daemon_pid = None
self.mode = 'live'
self.udm_certs = ''
self.curl_cert = ''
self.patcher = None
# Set up the dbus-daemon system configuration file.
path = data_path('dbus-system.conf.in')
with open(path, 'r', encoding='utf-8') as fp:
template = fp.read()
username = pwd.getpwuid(os.getuid()).pw_name
config = template.format(tmpdir=self.tmpdir, user=username)
with open(self.config_path, 'w', encoding='utf-8') as fp:
fp.write(config)
# We need a client.ini file for the subprocess.
self.ini_tmpdir = self._stack.enter_context(temporary_directory())
self.ini_vardir = self._stack.enter_context(temporary_directory())
self.ini_logfile = (os.path.join(self.ini_tmpdir, 'client.log')
if logfile is None
else logfile)
self.ini_path = os.path.join(self.tmpdir, 'config.d')
makedirs(self.ini_path)
self._reset_configs()
def test_date_unknown(self):
# If there is no /userdata/.last_update file and no ini files, then
# the last update date is unknown.
with ExitStack() as stack:
config_d = stack.enter_context(temporary_directory())
tempdir = stack.enter_context(temporary_directory())
userdata_path = os.path.join(tempdir, '.last_update')
stack.enter_context(
patch('systemimage.helpers.LAST_UPDATE_FILE', userdata_path))
config = Configuration(config_d)
stack.enter_context(patch('systemimage.config._config', config))
self.assertEqual(last_update_date(), 'Unknown')
def setUp(self):
# Start both an HTTP and an HTTPS server running. The former is for
# the zip files and the latter is for everything else. Vend them out
# of a temporary directory which we load up with the right files.
self._stack = ExitStack()
try:
self._serverdir = self._stack.enter_context(temporary_directory())
copy('winner.channels_01.json', self._serverdir, 'channels.json')
sign(os.path.join(self._serverdir, 'channels.json'),
'image-signing.gpg')
# Path B will win, with no bootme flags.
self._indexpath = os.path.join('stable', 'nexus7', 'index.json')
copy('winner.index_02.json', self._serverdir, self._indexpath)
sign(os.path.join(self._serverdir, self._indexpath),
'image-signing.gpg')
# Create every file in path B. The file contents will be the
# checksum value. We need to create the signatures on the fly.
setup_index('winner.index_02.json', self._serverdir,
'image-signing.gpg')
self._stack.push(
make_http_server(self._serverdir, 8943, 'cert.pem', 'key.pem'))
self._stack.push(make_http_server(self._serverdir, 8980))
except:
self._stack.close()
raise
def test_dangling_symlink(self, config):
# LP: #1495688 reports a problem where /userdata/.last_update doesn't
# exist, and the files in the config.d directory are dangling
# symlinks. In this case, there's really little that can be done to
# find a reliable last update date, but at least we don't crash.
#
# Start by deleting any existing .ini files in config.d.
for path in Path(config.config_d).iterdir():
if path.suffix == '.ini':
path.unlink()
with ExitStack() as stack:
tmpdir = stack.enter_context(temporary_directory())
userdata_path = Path(tmpdir) / '.last_update'
stack.enter_context(
patch('systemimage.helpers.LAST_UPDATE_FILE',
str(userdata_path)))
# Do not create the .last_update file.
missing_ini = Path(tmpdir) / 'missing.ini'
config.ini_files = [missing_ini]
# Do not create the missing.ini file, but do create a symlink from
# a config.d file to this missing file.
default_ini = Path(config.config_d) / '00_default.ini'
default_ini.symlink_to(missing_ini)
last_update_date()
self.assertEqual(last_update_date(), 'Unknown')
def sign(filename, pubkey_ring):
"""GPG sign the given file, producing an armored detached signature.
:param filename: The path to the file to sign.
:param pubkey_ring: The public keyring containing the key to sign the file
with. This keyring must contain only one key, and its key id must
exist in the master secret keyring.
"""
# filename could be a Path object. For now, just str-ify it.
filename = str(filename)
with ExitStack() as resources:
home = resources.enter_context(temporary_directory())
secring = data_path('master-secring.gpg')
pubring = data_path(pubkey_ring)
ctx = gnupg.GPG(
gnupghome=home,
keyring=pubring,
#verbose=True,
secret_keyring=secring)
public_keys = ctx.list_keys()
assert len(public_keys) != 0, 'No keys found'
assert len(public_keys) == 1, 'Too many keys'
key_id = public_keys[0]['keyid']
dfp = resources.enter_context(open(filename, 'rb'))
signed_data = ctx.sign_file(dfp, keyid=key_id, detach=True)
sfp = resources.enter_context(open(filename + '.asc', 'wb'))
sfp.write(signed_data.data)
def tempdir(self):
if self._tempdir is None:
makedirs(self.system.tempdir)
self._tempdir = self._resources.enter_context(
temporary_directory(prefix='system-image-',
dir=self.system.tempdir))
return self._tempdir
def setUp(self):
# Avoid circular imports.
from systemimage.state import State
self._resources = ExitStack()
self._state = State()
try:
self._serverdir = self._resources.enter_context(
temporary_directory())
# Start up both an HTTPS and HTTP server. The data files are
# vended over the latter, everything else, over the former.
self._resources.push(
make_http_server(self._serverdir, 8943, 'cert.pem', 'key.pem'))
self._resources.push(make_http_server(self._serverdir, 8980))
# Set up the server files.
assert self.CHANNEL_FILE is not None, (
'Subclasses must set CHANNEL_FILE')
copy(self.CHANNEL_FILE, self._serverdir, 'channels.json')
sign(os.path.join(self._serverdir, 'channels.json'),
'image-signing.gpg')
assert self.CHANNEL is not None, 'Subclasses must set CHANNEL'
assert self.DEVICE is not None, 'Subclasses must set DEVICE'
index_path = os.path.join(self._serverdir, self.CHANNEL,
self.DEVICE, 'index.json')
head, tail = os.path.split(index_path)
assert self.INDEX_FILE is not None, (
'Subclasses must set INDEX_FILE')
copy(self.INDEX_FILE, head, tail)
sign(index_path, self.SIGNING_KEY)
setup_index(self.INDEX_FILE, self._serverdir, self.SIGNING_KEY)
except:
self._resources.close()
raise
self.addCleanup(self._resources.close)
def setup_keyring_txz(keyring_src, signing_keyring, json_data, dst):
"""Set up the <keyring>.tar.xz and .asc files.
The source keyring and json data is used to create a .tar.xz file
and an associated .asc signature file. These are then copied to the
given destination path name.
:param keyring_src: The name of the source keyring (i.e. .gpg file), which
should be relative to the test data directory. This will serve as the
keyring.gpg file inside the tarball.
:param signing_keyring: The name of the keyring to sign the resulting
tarball with, again, relative to the test data directory.
:param json_data: The JSON data dictionary, i.e. the contents of the
keyring.json file inside the tarball.
:param dst: The destination path of the .tar.xz file. For the resulting
signature file, the .asc suffix will be automatically appended and
copied next to the dst file.
"""
with temporary_directory() as tmpdir:
copy(keyring_src, tmpdir, 'keyring.gpg')
json_path = os.path.join(tmpdir, 'keyring.json')
with open(json_path, 'w', encoding='utf-8') as fp:
json.dump(json_data, fp)
# Tar up the .gpg and .json files into a .tar.xz file.
tarxz_path = os.path.join(tmpdir, 'keyring.tar.xz')
with tarfile.open(tarxz_path, 'w:xz') as tf:
tf.add(os.path.join(tmpdir, 'keyring.gpg'), 'keyring.gpg')
tf.add(json_path, 'keyring.json')
sign(tarxz_path, signing_keyring)
# Copy the .tar.xz and .asc files to the proper directory under
# the path the https server is vending them from.
makedirs(os.path.dirname(dst))
shutil.copy(tarxz_path, dst)
shutil.copy(tarxz_path + '.asc', dst + '.asc')
def test_signature_invalid(self):
# The .validate() method raises a SignatureError exception with extra
# information when the signature is invalid.
channels_json = os.path.join(self._tmpdir, 'channels.json')
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
sign(channels_json, 'device-signing.gpg')
# Verify the signature with the pubkey.
with temporary_directory() as tmpdir:
dst = os.path.join(tmpdir, 'image-signing.tar.xz')
setup_keyring_txz('image-signing.gpg', 'image-master.gpg',
dict(type='image-signing'), dst)
# Get the dst's checksum now, because the file will get deleted
# when the tmpdir context manager exits.
with open(dst, 'rb') as fp:
dst_checksum = hashlib.md5(fp.read()).hexdigest()
with Context(dst) as ctx:
with self.assertRaises(SignatureError) as cm:
ctx.validate(channels_json + '.asc', channels_json)
error = cm.exception
basename = os.path.basename
self.assertEqual(basename(error.signature_path), 'channels.json.asc')
self.assertEqual(basename(error.data_path), 'channels.json')
# The contents of the signature file are not predictable.
with open(channels_json + '.asc', 'rb') as fp:
checksum = hashlib.md5(fp.read()).hexdigest()
self.assertEqual(error.signature_checksum, checksum)
self.assertEqual(
error.data_checksum, '715c63fecbf44b62f9fa04a82dfa7d29')
basenames = [basename(path) for path in error.keyrings]
self.assertEqual(basenames, ['image-signing.tar.xz'])
self.assertIsNone(error.blacklist)
self.assertEqual(error.keyring_checksums, [dst_checksum])
self.assertIsNone(error.blacklist_checksum)
def setUp(self):
self._resources = ExitStack()
tmpdir = self._resources.enter_context(temporary_directory())
self._mid_path = os.path.join(tmpdir, 'machine-id')
self._resources.enter_context(
patch('systemimage.helpers.UNIQUE_MACHINE_ID_FILES',
[self._mid_path]))
def test_cancel(self):
# Try to cancel the download of a big file.
self.assertEqual(os.listdir(config.tempdir), [])
with ExitStack() as stack:
serverdir = stack.enter_context(temporary_directory())
stack.push(make_http_server(serverdir, 8980))
# Create a couple of big files to download.
write_bytes(os.path.join(serverdir, 'bigfile_1.dat'), 10)
write_bytes(os.path.join(serverdir, 'bigfile_2.dat'), 10)
# The download service doesn't provide reliable cancel
# granularity, so instead, we mock the 'started' signal to
# immediately cancel the download.
downloader = get_download_manager()
def cancel_on_start(self, signal, path, started):
if started:
downloader.cancel()
stack.enter_context(patch(
'systemimage.udm.DownloadReactor._do_started',
cancel_on_start))
self.assertRaises(
Canceled, downloader.get_files, _http_pathify([
('bigfile_1.dat', 'bigfile_1.dat'),
('bigfile_2.dat', 'bigfile_2.dat'),
]))
self.assertEqual(os.listdir(config.tempdir), [])
def setUp(self):
self._stack = ExitStack()
try:
self._serverdir = self._stack.enter_context(temporary_directory())
self._stack.push(
make_http_server(self._serverdir, 8943, 'cert.pem', 'key.pem'))
except:
self._stack.close()
raise
def test_offset_no_file(self):
with ExitStack() as stack:
tmpdir = stack.enter_context(temporary_directory())
timekeep_file = Path(tmpdir) / 'timekeep'
stack.enter_context(
patch('systemimage.helpers.TIMEKEEPER_OFFSET_FILE',
str(timekeep_file)))
# Don't create the file
self.assertEqual(get_android_offset(), 0)
def setUp(self):
super().setUp()
self._resources = ExitStack()
try:
self._serverdir = self._resources.enter_context(
temporary_directory())
self._resources.push(make_http_server(self._serverdir, 8980))
except:
self._resources.close()
raise
def setUp(self):
self._stack = ExitStack()
try:
self._serverdir = self._stack.enter_context(temporary_directory())
copy('channel.channels_01.json', self._serverdir, 'channels.json')
sign(os.path.join(self._serverdir, 'channels.json'),
'image-signing.gpg')
except:
self._stack.close()
raise
def test_offset_garbage_file(self):
with ExitStack() as stack:
tmpdir = stack.enter_context(temporary_directory())
timekeep_file = Path(tmpdir) / 'timekeep'
stack.enter_context(
patch('systemimage.helpers.TIMEKEEPER_OFFSET_FILE',
str(timekeep_file)))
timekeep_file.touch()
with open(str(timekeep_file), 'w') as f:
f.write("This is definitely not a timestamp")
self.assertEqual(get_android_offset(), 0)
def setUp(self):
# Start the HTTPS server running. Vend it out of a temporary
# directory which we load up with the right files.
self._stack = ExitStack()
try:
self._serverdir = self._stack.enter_context(temporary_directory())
self._stack.push(
make_http_server(self._serverdir, 8943, 'cert.pem', 'key.pem'))
except:
self._stack.close()
raise
def test_good_validation(self):
# The .validate() method does nothing if the signature is good.
channels_json = os.path.join(self._tmpdir, 'channels.json')
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
sign(channels_json, 'image-signing.gpg')
with temporary_directory() as tmpdir:
keyring = os.path.join(tmpdir, 'image-signing.tar.xz')
setup_keyring_txz('image-signing.gpg', 'image-master.gpg',
dict(type='image-signing'), keyring)
with Context(keyring) as ctx:
self.assertIsNone(
ctx.validate(channels_json + '.asc', channels_json))
def test_offset(self):
with ExitStack() as stack:
tmpdir = stack.enter_context(temporary_directory())
timekeep_file = Path(tmpdir) / 'timekeep'
stack.enter_context(
patch('systemimage.helpers.TIMEKEEPER_OFFSET_FILE',
str(timekeep_file)))
timestamp = int(datetime(2012, 11, 10, 9, 8, 7).timestamp())
timekeep_file.touch()
with open(str(timekeep_file), 'w') as f:
f.write(str(timestamp))
self.assertEqual(get_android_offset(), 1352560087)
def test_date_from_userdata(self):
# The last upgrade data can come from /userdata/.last_update.
with ExitStack() as stack:
tmpdir = stack.enter_context(temporary_directory())
userdata_path = Path(tmpdir) / '.last_update'
stack.enter_context(
patch('systemimage.helpers.LAST_UPDATE_FILE',
str(userdata_path)))
timestamp = int(datetime(2012, 11, 10, 9, 8, 7).timestamp())
userdata_path.touch()
os.utime(str(userdata_path), (timestamp, timestamp))
self.assertEqual(last_update_date(), '2012-11-10 09:08:07')
def _wrapper(self, function, ini_files, *args, **kws):
start = 0
# It would be preferable to simply add a device='nexus7' argument, but that
# causes 'decorator() takes 1 positional argument but 2 were given'
device = kws.get('device', 'nexus7')
with ExitStack() as resources:
# Create the config.d directory and copy all the source ini files to
# this directory in sequential order, interpolating in the temporary
# tmp and var directories.
config_d = resources.enter_context(temporary_directory())
temp_tmpdir = resources.enter_context(temporary_directory())
temp_vardir = resources.enter_context(temporary_directory())
for ini_file in ini_files:
dst = os.path.join(config_d, '{:02d}_override.ini'.format(start))
start += 1
template = resource_bytes('systemimage.tests.data',
ini_file).decode('utf-8')
with atomic(dst) as fp:
print(template.format(tmpdir=temp_tmpdir, vardir=temp_vardir),
file=fp)
# Patch the global configuration object so that it can be used
# directly, which is good enough in most cases. Also patch the bit of
# code that detects the device name.
config = Configuration(config_d)
resources.enter_context(patch('systemimage.config._config', config))
resources.enter_context(
patch('systemimage.device.check_output', return_value=device))
# Make sure the cache_partition and data_partition exist.
makedirs(config.updater.cache_partition)
makedirs(config.updater.data_partition)
# The method under test is allowed to specify some additional
# keyword arguments, in order to pass some variables in from the
# wrapper.
signature = inspect.signature(function)
if 'config_d' in signature.parameters:
kws['config_d'] = config_d
if 'config' in signature.parameters:
kws['config'] = config
# Call the function with the given arguments and return the result.
return function(self, *args)
def setUp(self):
self._stack = ExitStack()
self._state = State()
try:
self._serverdir = self._stack.enter_context(temporary_directory())
self._stack.push(
make_http_server(self._serverdir, 8943, 'cert.pem', 'key.pem'))
copy('channel.channels_01.json', self._serverdir, 'channels.json')
self._channels_path = os.path.join(self._serverdir,
'channels.json')
except:
self._stack.close()
raise
def test_bad_not_even_a_signature(self):
# The signature file isn't even a signature file.
channels_json = os.path.join(self._tmpdir, 'channels.json')
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json + '.asc')
with temporary_directory() as tmpdir:
dst = os.path.join(tmpdir, 'device-signing.tar.xz')
setup_keyring_txz('device-signing.gpg', 'image-signing.gpg',
dict(type='device-signing'),
dst)
with Context(dst) as ctx:
self.assertFalse(ctx.verify(
channels_json + '.asc', channels_json))
def test_good_signature(self):
# We have a channels.json file signed with the imaging signing key, as
# would be the case in production. The signature will match a context
# loaded with the public key.
channels_json = os.path.join(self._tmpdir, 'channels.json')
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
sign(channels_json, 'image-signing.gpg')
with temporary_directory() as tmpdir:
keyring = os.path.join(tmpdir, 'image-signing.tar.xz')
setup_keyring_txz('image-signing.gpg', 'image-master.gpg',
dict(type='image-signing'), keyring)
with Context(keyring) as ctx:
self.assertTrue(
ctx.verify(channels_json + '.asc', channels_json))
def test_bad_signature(self):
# In this case, the file is signed with the device key, so it will not
# verify against the image signing key.
channels_json = os.path.join(self._tmpdir, 'channels.json')
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
sign(channels_json, 'device-signing.gpg')
# Verify the signature with the pubkey.
with temporary_directory() as tmpdir:
dst = os.path.join(tmpdir, 'image-signing.tar.xz')
setup_keyring_txz('image-signing.gpg', 'image-master.gpg',
dict(type='image-signing'), dst)
with Context(dst) as ctx:
self.assertFalse(
ctx.verify(channels_json + '.asc', channels_json))
def __enter__(self):
try:
# Use a temporary directory for the $GNUPGHOME, but be sure to
# arrange for the tempdir to be deleted no matter what.
home = self._stack.enter_context(
temporary_directory(prefix='si-gnupghome',
dir=config.tempdir))
self._ctx = gnupg.GPG(gnupghome=home, keyring=self._keyrings)
self._stack.callback(setattr, self, '_ctx', None)
except: # pragma: no cover
# Restore all context and re-raise the exception.
self._stack.close()
raise
else:
return self
def _use_cached_keyring(txz, asc, signing_key):
if not _use_cached(txz, asc, (signing_key, )):
return False
# Do one additional check: unpack the .tar.xz file, grab the keyring.json
# and if it has an expiry key, make sure that the keyring has not expired.
with temporary_directory(dir=config.tempdir) as tmp:
with tarfile.open(txz, 'r:xz') as tf:
tf.extractall(tmp)
json_path = os.path.join(tmp, 'keyring.json')
with open(json_path, 'r', encoding='utf-8') as fp:
data = json.load(fp)
expiry = data.get('expiry')
timestamp = datetime.now(tz=timezone.utc).timestamp()
# We can use this keyring if it never expires, or if the expiration date
# is some time in the future.
return expiry is None or expiry > timestamp
def test_good_signature_with_multiple_keyrings(self):
# Like above, the file is signed with the device key, but this time we
# include both the image signing and device signing pubkeys.
channels_json = os.path.join(self._tmpdir, 'channels.json')
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
sign(channels_json, 'device-signing.gpg')
with temporary_directory() as tmpdir:
keyring_1 = os.path.join(tmpdir, 'image-signing.tar.xz')
keyring_2 = os.path.join(tmpdir, 'device-signing.tar.xz')
setup_keyring_txz('image-signing.gpg', 'image-master.gpg',
dict(type='image-signing'), keyring_1)
setup_keyring_txz('device-signing.gpg', 'image-signing.gpg',
dict(type='device-signing'), keyring_2)
with Context(keyring_1, keyring_2) as ctx:
self.assertTrue(
ctx.verify(channels_json + '.asc', channels_json))
def test_bad_not_even_a_signature(self, config):
# The signature file isn't even a signature file. Verification will
# fail unless the --skip-gpg-verification flag is set.
channels_json = os.path.join(self._tmpdir, 'channels.json')
channels_asc = channels_json + '.asc'
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json + '.asc')
with temporary_directory() as tmpdir:
dst = os.path.join(tmpdir, 'device-signing.tar.xz')
setup_keyring_txz('device-signing.gpg', 'image-signing.gpg',
dict(type='device-signing'),
dst)
with Context(dst) as ctx:
self.assertFalse(ctx.verify(channels_asc, channels_json))
config.skip_gpg_verification = True
self.assertTrue(ctx.verify(channels_asc, channels_json))
def test_bad_signature_with_validate(self, config):
# This is similar to the above, except that the .validate() API is
# used instead.
channels_json = os.path.join(self._tmpdir, 'channels.json')
channels_asc = channels_json + '.asc'
copy('gpg.channels_01.json', self._tmpdir, dst=channels_json)
sign(channels_json, 'device-signing.gpg')
# Verify the signature with the pubkey.
with temporary_directory() as tmpdir:
dst = os.path.join(tmpdir, 'image-signing.tar.xz')
setup_keyring_txz('image-signing.gpg', 'image-master.gpg',
dict(type='image-signing'), dst)
with Context(dst) as ctx:
self.assertRaises(SignatureError, ctx.validate,
channels_asc, channels_json)
config.skip_gpg_verification = True
ctx.validate(channels_asc, channels_json)
