def testMultiGetFileSetsFileHashAttributeWhenMultipleChunksDownloaded(self):
client_mock = action_mocks.ActionMock("TransferBuffer", "HashFile",
"StatFile", "HashBuffer")
pathspec = rdf_paths.PathSpec(
pathtype=rdf_paths.PathSpec.PathType.OS,
path=os.path.join(self.base_path, "test_img.dd"))
args = transfer.MultiGetFileArgs(pathspecs=[pathspec])
for _ in test_lib.TestFlowHelper("MultiGetFile", client_mock,
token=self.token,
client_id=self.client_id, args=args):
pass
# Fix path for Windows testing.
pathspec.path = pathspec.path.replace("\\", "/")
# Test the AFF4 file that was created.
urn = aff4.AFF4Object.VFSGRRClient.PathspecToURN(pathspec, self.client_id)
fd = aff4.FACTORY.Open(urn, token=self.token)
fd_hash = fd.Get(fd.Schema.HASH)
self.assertTrue(fd_hash)
h = hashlib.sha256()
with open(os.path.join(self.base_path, "test_img.dd")) as model_fd:
h.update(model_fd.read())
self.assertEqual(fd_hash.sha256, h.digest())
def testMultiGetFile(self):
"""Test MultiGetFile."""
client_mock = action_mocks.ActionMock("TransferBuffer", "HashFile",
"StatFile", "HashBuffer")
pathspec = rdf_paths.PathSpec(
pathtype=rdf_paths.PathSpec.PathType.OS,
path=os.path.join(self.base_path, "test_img.dd"))
args = transfer.MultiGetFileArgs(pathspecs=[pathspec, pathspec])
with test_lib.Instrument(
transfer.MultiGetFile, "StoreStat") as storestat_instrument:
for _ in test_lib.TestFlowHelper("MultiGetFile", client_mock,
token=self.token,
client_id=self.client_id, args=args):
pass
# We should only have called StoreStat once because the two paths
# requested were identical.
self.assertEqual(len(storestat_instrument.args), 1)
# Fix path for Windows testing.
pathspec.path = pathspec.path.replace("\\", "/")
# Test the AFF4 file that was created.
urn = aff4.AFF4Object.VFSGRRClient.PathspecToURN(pathspec, self.client_id)
fd1 = aff4.FACTORY.Open(urn, token=self.token)
fd2 = open(pathspec.path)
fd2.seek(0, 2)
self.assertEqual(fd2.tell(), int(fd1.Get(fd1.Schema.SIZE)))
self.CompareFDs(fd1, fd2)
def testMultiGetFileDeduplication(self):
client_mock = action_mocks.MultiGetFileClientMock()
pathspecs = []
# Make 10 files to download.
for i in xrange(10):
path = os.path.join(self.temp_dir, "test_%s.txt" % i)
with open(path, "wb") as fd:
fd.write("Hello")
pathspecs.append(
rdf_paths.PathSpec(pathtype=rdf_paths.PathSpec.PathType.OS,
path=path))
# All those files are the same so the individual chunks should
# only be downloaded once. By forcing maximum_pending_files=1,
# there should only be a single TransferBuffer call.
args = transfer.MultiGetFileArgs(pathspecs=pathspecs,
maximum_pending_files=1)
for _ in test_lib.TestFlowHelper("MultiGetFile",
client_mock,
token=self.token,
client_id=self.client_id,
args=args):
pass
self.assertEqual(client_mock.action_counts["TransferBuffer"], 1)
def CreateMultiGetFileFlow(self, client_id, file_path, token):
pathspec = rdf_paths.PathSpec(path=file_path,
pathtype=rdf_paths.PathSpec.PathType.OS)
flow_args = transfer.MultiGetFileArgs(pathspecs=[pathspec])
return flow.GRRFlow.StartFlow(client_id=client_id,
flow_name="MultiGetFile",
args=flow_args,
token=token)
def testMultiGetFileMultiFiles(self):
"""Test MultiGetFile downloading many files at once."""
client_mock = action_mocks.MultiGetFileClientMock()
pathspecs = []
# Make 30 files to download.
for i in xrange(30):
path = os.path.join(self.temp_dir, "test_%s.txt" % i)
with open(path, "wb") as fd:
fd.write("Hello")
pathspecs.append(
rdf_paths.PathSpec(pathtype=rdf_paths.PathSpec.PathType.OS,
path=path))
args = transfer.MultiGetFileArgs(pathspecs=pathspecs,
maximum_pending_files=10)
for session_id in test_lib.TestFlowHelper("MultiGetFile",
client_mock,
token=self.token,
client_id=self.client_id,
args=args):
# Check up on the internal flow state.
flow_obj = aff4.FACTORY.Open(session_id,
mode="r",
token=self.token)
flow_state = flow_obj.state
# All the pathspecs should be in this list.
self.assertEqual(len(flow_state.indexed_pathspecs), 30)
# At any one time, there should not be more than 10 files or hashes
# pending.
self.assertLessEqual(len(flow_state.pending_files), 10)
self.assertLessEqual(len(flow_state.pending_hashes), 10)
# When we finish there should be no pathspecs stored in the flow state.
for flow_pathspec in flow_state.indexed_pathspecs:
self.assertIsNone(flow_pathspec)
for flow_request_data in flow_state.request_data_list:
self.assertIsNone(flow_request_data)
# Now open each file and make sure the data is there.
for pathspec in pathspecs:
urn = pathspec.AFF4Path(self.client_id)
fd = aff4.FACTORY.Open(urn, token=self.token)
self.assertEqual("Hello", fd.Read(100000))
def testMultiGetFileSizeLimit(self):
client_mock = action_mocks.ActionMock("TransferBuffer", "HashFile",
"StatFile", "HashBuffer")
image_path = os.path.join(self.base_path, "test_img.dd")
pathspec = rdf_paths.PathSpec(pathtype=rdf_paths.PathSpec.PathType.OS,
path=image_path)
# Read a bit more than one chunk (600 * 1024).
expected_size = 750 * 1024
args = transfer.MultiGetFileArgs(pathspecs=[pathspec],
file_size=expected_size)
for _ in test_lib.TestFlowHelper("MultiGetFile",
client_mock,
token=self.token,
client_id=self.client_id,
args=args):
pass
urn = aff4.AFF4Object.VFSGRRClient.PathspecToURN(
pathspec, self.client_id)
blobimage = aff4.FACTORY.Open(urn, token=self.token)
# Make sure a VFSBlobImage got written.
self.assertTrue(isinstance(blobimage, aff4_grr.VFSBlobImage))
self.assertEqual(len(blobimage), expected_size)
data = blobimage.read(100 * expected_size)
self.assertEqual(len(data), expected_size)
expected_data = open(image_path, "rb").read(expected_size)
self.assertEqual(data, expected_data)
hash_obj = blobimage.Get(blobimage.Schema.HASH)
d = hashlib.sha1()
d.update(expected_data)
expected_hash = d.hexdigest()
self.assertEqual(hash_obj.sha1, expected_hash)
