def RunHunt(self, plugin_name, plugin_args):
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS)),
regex_rules=[
rdfvalue.ForemanAttributeRegex(attribute_name="GRR client",
attribute_regex="GRR")
],
output_plugins=[
rdfvalue.OutputPlugin(plugin_name=plugin_name,
plugin_args=plugin_args)
],
client_rate=0,
token=self.token) as hunt:
hunt.Run()
hunt.StartClients(hunt.session_id, self.client_ids)
# Run the hunt.
client_mock = test_lib.SampleHuntMock()
test_lib.TestHuntHelper(client_mock, self.client_ids, False,
self.token)
# Stop the hunt now.
hunt.GetRunner().Stop()
# Run cron flow that executes actual output plugins
for _ in test_lib.TestFlowHelper("ProcessHuntResultsCronFlow",
token=self.token):
pass
return hunt.urn
def CreateSampleHunt(self, stopped=False):
self.client_ids = self.SetupClients(10)
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(
flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(
pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS,
)
),
regex_rules=[rdfvalue.ForemanAttributeRegex(
attribute_name="GRR client",
attribute_regex="GRR")],
output_plugins=[],
client_rate=0, token=self.token) as hunt:
if not stopped:
hunt.Run()
with aff4.FACTORY.Open("aff4:/foreman", mode="rw",
token=self.token) as foreman:
for client_id in self.client_ids:
foreman.AssignTasksToClient(client_id)
self.hunt_urn = hunt.urn
return aff4.FACTORY.Open(hunt.urn, mode="rw", token=self.token,
age=aff4.ALL_TIMES)
def testCreatorPropagation(self):
self.CreateAdminUser("adminuser")
admin_token = access_control.ACLToken(username="******",
reason="testing")
# Start a flow that requires admin privileges in the hunt. The
# parameters are not valid so the flow will error out but it's
# enough to check if the flow was actually run (i.e., it passed
# the label test).
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="UpdateClient"),
flow_args=rdfvalue.UpdateClientArgs(),
regex_rules=[
rdfvalue.ForemanAttributeRegex(attribute_name="GRR client",
attribute_regex="GRR"),
],
client_rate=0, token=admin_token) as hunt:
hunt.Run()
self.CreateUser("nonadmin")
nonadmin_token = access_control.ACLToken(username="******",
reason="testing")
self.AssignTasksToClients()
client_mock = test_lib.SampleHuntMock()
test_lib.TestHuntHelper(client_mock, self.client_ids, False,
nonadmin_token)
errors = list(hunt.GetClientsErrors())
# Make sure there are errors...
self.assertTrue(errors)
# but they are not UnauthorizedAccess.
for e in errors:
self.assertTrue("UnauthorizedAccess" not in e.backtrace)
def testStoppingHuntMarksAllStartedFlowsAsPendingForTermination(self):
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="InfiniteFlow"),
regex_rules=[
rdfvalue.ForemanAttributeRegex(attribute_name="GRR client",
attribute_regex="GRR"),
],
client_rate=0, token=self.token) as hunt:
hunt.Run()
self.AssignTasksToClients()
# Run long enough for InfiniteFlows to start.
self.RunHunt(iteration_limit=len(self.client_ids) * 2)
self.StopHunt(hunt.urn)
# All flows should be marked for termination now. RunHunt should raise.
# If something is wrong with GRRFlow.MarkForTermination mechanism, then
# this will run forever.
self.RunHunt()
for client_id in self.client_ids:
flows_root = aff4.FACTORY.Open(client_id.Add("flows"), token=self.token)
flows_list = list(flows_root.ListChildren())
# Only one flow (issued by the hunt) is expected.
self.assertEqual(len(flows_list), 1)
flow_obj = aff4.FACTORY.Open(flows_list[0], aff4_type="InfiniteFlow",
token=self.token)
self.assertEqual(flow_obj.state.context.state, "ERROR")
self.assertEqual(flow_obj.state.context.backtrace,
"Parent hunt stopped.")
def InitializeContext(self, args):
"""Initializes the context of this flow."""
if args is None:
args = rdfvalue.FlowRunnerArgs()
context = flows.DataObject(
args=args,
backtrace=None,
client_resources=rdfvalue.ClientResources(),
create_time=rdfvalue.RDFDatetime().Now(),
creator=self.token.username,
current_state="Start",
network_bytes_sent=0,
next_outbound_id=1,
next_processed_request=1,
next_states=set(),
output=self._CreateOutputCollection(args),
outstanding_requests=0,
remaining_cpu_quota=args.cpu_limit,
state=rdfvalue.Flow.State.RUNNING,
user=self.token.username,
# Have we sent a notification to the user.
user_notified=False,
)
# Store the context in the flow_obj for next time.
self.flow_obj.state.Register("context", context)
return context
def _AppendFlowRequest(self, flows, client_id, file_id):
flows.Append(
client_ids=["C.1%015d" % client_id],
runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
args=rdfvalue.GetFileArgs(
pathspec=rdfvalue.PathSpec(
path="/tmp/evil%s.txt" % file_id,
pathtype=rdfvalue.PathSpec.PathType.OS),
)
)
def testHuntExpiration(self):
"""This tests that hunts with a client limit terminate correctly."""
with test_lib.FakeTime(1000):
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(
flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS)),
regex_rules=[
rdfvalue.ForemanAttributeRegex(
attribute_name="GRR client", attribute_regex="GRR")
],
client_limit=5,
expiry_time=rdfvalue.Duration("1000s"),
token=self.token) as hunt:
hunt.Run()
# Pretend to be the foreman now and dish out hunting jobs to all the
# clients (Note we have 10 clients here).
foreman = aff4.FACTORY.Open("aff4:/foreman",
mode="rw",
token=self.token)
for client_id in self.client_ids:
foreman.AssignTasksToClient(client_id)
hunt_obj = aff4.FACTORY.Open(hunt.session_id,
age=aff4.ALL_TIMES,
token=self.token)
self.assertEqual(hunt_obj.Get(hunt_obj.Schema.STATE), "STARTED")
# Now advance the time such that the hunt expires.
time.time = lambda: 5000
# Run the hunt.
client_mock = test_lib.SampleHuntMock()
test_lib.TestHuntHelper(client_mock,
self.client_ids,
check_flow_errors=False,
token=self.token)
# No client should be processed since the hunt is expired.
started, finished, errors = hunt_obj.GetClientsCounts()
self.assertEqual(started, 0)
self.assertEqual(finished, 0)
self.assertEqual(errors, 0)
hunt_obj = aff4.FACTORY.Open(hunt.session_id,
age=aff4.ALL_TIMES,
token=self.token)
# Hunts are automatically stopped when they expire.
self.assertEqual(hunt_obj.Get(hunt_obj.Schema.STATE), "STOPPED")
def CreateSampleHunt(description, token=None):
return hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
description=description,
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS,
)),
client_rate=0,
token=token)
def _CreateHunt(self, token):
return hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt", pathtype=rdfvalue.PathSpec.PathType.OS)),
regex_rules=[
rdfvalue.ForemanAttributeRegex(attribute_name="GRR client",
attribute_regex="GRR"),
],
client_rate=0, token=token)
def InitializeContext(self, args):
"""Initializes the context of this flow."""
if args is None:
args = rdfvalue.FlowRunnerArgs()
output_collection = self._CreateOutputCollection(args)
# Output collection is nullified when flow is terminated, so we're
# keeping the urn separately for further reference.
output_urn = (output_collection is not None) and output_collection.urn
output_plugins_states = []
for plugin_descriptor in args.output_plugins:
plugin_class = plugin_descriptor.GetPluginClass()
plugin = plugin_class(output_urn,
args=plugin_descriptor.plugin_args,
token=self.token)
try:
plugin.Initialize()
output_plugins_states.append((plugin_descriptor, plugin.state))
except Exception as e: # pylint: disable=broad-except
self.Log("Plugin %s failed to initialize (%s), ignoring it." %
(plugin, e))
context = utils.DataObject(
args=args,
backtrace=None,
client_resources=rdfvalue.ClientResources(),
create_time=rdfvalue.RDFDatetime().Now(),
creator=args.creator or self.token.username,
current_state="Start",
# If not None, kill-stuck-flow notification is scheduled at the given
# time.
kill_timestamp=None,
network_bytes_sent=0,
next_outbound_id=1,
next_processed_request=1,
next_states=set(),
output=output_collection,
output_plugins_states=output_plugins_states,
output_urn=output_urn,
outstanding_requests=0,
remaining_cpu_quota=args.cpu_limit,
state=rdfvalue.Flow.State.RUNNING,
# Have we sent a notification to the user.
user_notified=False,
)
# Store the context in the flow_obj for next time.
self.flow_obj.state.Register("context", context)
return context
def CreateSampleHunt(self, description):
hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
description=description,
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS,
)),
regex_rules=[],
output_plugins=[],
client_rate=0,
token=self.token)
def Start(self):
self.state.Register("hunt_id", None)
self.state.Register("client_ids", set())
self.state.Register("client_ids_failures", set())
self.state.Register("client_ids_result_reported", set())
self.state.client_ids = base.GetClientTestTargets(token=self.token)
if not self.state.client_ids:
self.Log("No clients to test on, define them in "
"Test.end_to_end_client_ids")
return
token = access_control.ACLToken(username="******",
reason="Running endtoend tests.").SetUID()
runner_args = rdfvalue.FlowRunnerArgs(flow_name="EndToEndTestFlow")
flow_request = rdfvalue.FlowRequest(
client_ids=self.state.client_ids,
args=rdfvalue.EndToEndTestFlowArgs(),
runner_args=runner_args)
bogus_rule = rdfvalue.ForemanAttributeRegex(
attribute_name="System", attribute_regex="Does not match anything")
hunt_args = rdfvalue.VariableGenericHuntArgs(flows=[flow_request])
hunt_args.output_plugins = self.GetOutputPlugins()
with hunts.GRRHunt.StartHunt(
hunt_name="VariableGenericHunt",
args=hunt_args,
regex_rules=[bogus_rule],
client_rate=0,
expiry_time="1d",
token=token) as hunt:
self.state.hunt_id = hunt.session_id
hunt.SetDescription("EndToEnd tests run by cron")
hunt.Run()
hunt.ManuallyScheduleClients(token=token)
# Set a callback to check the results after 50 minutes. This should be
# plenty of time for the clients to receive the hunt and run the tests, but
# not so long that the flow lease will expire.
wait_duration = rdfvalue.Duration(
config_lib.CONFIG.Get("Test.end_to_end_result_check_wait"))
completed_time = rdfvalue.RDFDatetime().Now() + wait_duration
self.CallState(next_state="CheckResults", start_time=completed_time)
def Start(self):
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="Interrogate"),
flow_args=rdfvalue.InterrogateArgs(lightweight=False),
regex_rules=[],
output_plugins=self.GetOutputPlugins(),
token=self.token) as hunt:
runner = hunt.GetRunner()
runner.args.client_rate = 50
runner.args.expiry_time = "1w"
runner.args.description = ("Interrogate run by cron to keep host"
"info fresh.")
runner.Start()
def testHuntTermination(self):
"""This tests that hunts with a client limit terminate correctly."""
with test_lib.FakeTime(1000):
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(
pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS)
),
regex_rules=[rdfvalue.ForemanAttributeRegex(
attribute_name="GRR client",
attribute_regex="GRR")],
client_limit=5, client_rate=0,
expiry_time=rdfvalue.Duration("1000s"), token=self.token) as hunt:
hunt.Run()
# Pretend to be the foreman now and dish out hunting jobs to all the
# clients (Note we have 10 clients here).
foreman = aff4.FACTORY.Open("aff4:/foreman", mode="rw", token=self.token)
for client_id in self.client_ids:
foreman.AssignTasksToClient(client_id)
# Run the hunt.
client_mock = test_lib.SampleHuntMock()
test_lib.TestHuntHelper(client_mock, self.client_ids,
check_flow_errors=False, token=self.token)
hunt_obj = aff4.FACTORY.Open(hunt.session_id, age=aff4.ALL_TIMES,
token=self.token)
started = hunt_obj.GetValuesForAttribute(hunt_obj.Schema.CLIENTS)
finished = hunt_obj.GetValuesForAttribute(hunt_obj.Schema.FINISHED)
errors = hunt_obj.GetValuesForAttribute(hunt_obj.Schema.ERRORS)
self.assertEqual(len(set(started)), 5)
self.assertEqual(len(set(finished)), 5)
self.assertEqual(len(set(errors)), 2)
hunt_obj = aff4.FACTORY.Open(hunt.session_id, age=aff4.ALL_TIMES,
token=self.token)
# Hunts are automatically paused when they reach the client limit.
self.assertEqual(hunt_obj.Get(hunt_obj.Schema.STATE), "PAUSED")
def RunHunt(self,
plugin_args=None,
responses=None,
process_responses_separately=False):
if responses is None:
responses = []
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS)),
regex_rules=[
rdfvalue.ForemanAttributeRegex(attribute_name="GRR client",
attribute_regex="GRR"),
],
client_rate=0,
token=self.token) as hunt:
hunt_urn = hunt.urn
plugin_def = rdfvalue.OutputPlugin(plugin_name="CSVOutputPlugin",
plugin_args=plugin_args)
plugin = plugin_def.GetPluginForHunt(hunt)
# We don't want to test the whole output plugins subsystem as it's
# tested in its own tests. We only want to test logic specific to
# ColumnIOHuntOutputPlugin.
messages = []
for response in responses:
messages.append(
rdfvalue.GrrMessage(source=self.client_id, payload=response))
if process_responses_separately:
for message in messages:
plugin.ProcessResponses([message])
else:
plugin.ProcessResponses(messages)
plugin.Flush()
return (hunt_urn, plugin)
def testHuntCollectionLogging(self):
"""This tests running the hunt on some clients."""
with hunts.GRRHunt.StartHunt(hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(
flow_name="DummyLogFlow"),
client_rate=0,
token=self.token) as hunt:
hunt.Run()
hunt.Log("Log from the hunt itself")
hunt_urn = hunt.urn
self.AssignTasksToClients()
self.RunHunt()
self.StopHunt(hunt_urn)
# Check logs were written to the hunt collection
with aff4.FACTORY.Open(hunt_urn.Add("Logs"),
token=self.token,
age=aff4.ALL_TIMES) as hunt_logs:
# Can't use len with PackedVersionCollection
count = 0
for log in hunt_logs:
if log.client_id:
self.assertTrue(log.client_id in self.client_ids)
self.assertTrue(log.log_message in [
"First", "Second", "Third", "Fourth", "Uno", "Dos",
"Tres", "Cuatro"
])
self.assertTrue(
log.flow_name in ["DummyLogFlow", "DummyLogFlowChild"])
self.assertTrue(str(hunt_urn) in str(log.urn))
else:
self.assertEqual(log.log_message,
"Log from the hunt itself")
self.assertEqual(log.flow_name, "GenericHunt")
self.assertEqual(log.urn, hunt_urn)
count += 1
# 4 logs for each flow, 2 flow run. One hunt-level log.
self.assertEqual(count, 8 * len(self.client_ids) + 1)
class TestFileFinderOSHomedir(TestFileFinderOSLinux):
"""List files in homedir with FileFinder.
Exercise globbing and interpolation.
"""
platforms = ["Linux", "Darwin", "Windows"]
test_output_path = "/analysis/test/homedirs"
action = file_finder.FileFinderAction(
action_type=file_finder.FileFinderAction.Action.STAT)
args = {
"paths": ["%%users.homedir%%/*"],
"action": action,
"runner_args": rdfvalue.FlowRunnerArgs(output=test_output_path)
}
def CheckFlow(self):
results = aff4.FACTORY.Open(self.client_id.Add(self.test_output_path),
token=self.token)
self.assertEqual(type(results), aff4.RDFValueCollection)
self.assertTrue(len(results) > 1)
def InitializeContext(self, args):
"""Initializes the context of this flow."""
if args is None:
args = rdfvalue.FlowRunnerArgs()
output_collection = self._CreateOutputCollection(args)
context = utils.DataObject(
args=args,
backtrace=None,
client_resources=rdfvalue.ClientResources(),
create_time=rdfvalue.RDFDatetime().Now(),
creator=args.creator or self.token.username,
current_state="Start",
# If not None, kill-stuck-flow notification is scheduled at the given
# time.
kill_timestamp=None,
network_bytes_sent=0,
next_outbound_id=1,
next_processed_request=1,
next_states=set(),
output=output_collection,
# Output collection is nullified when flow is terminated, so we're
# keeping the urn separately for further reference.
output_urn=(output_collection is not None)
and output_collection.urn,
outstanding_requests=0,
remaining_cpu_quota=args.cpu_limit,
state=rdfvalue.Flow.State.RUNNING,
# Have we sent a notification to the user.
user_notified=False,
)
# Store the context in the flow_obj for next time.
self.flow_obj.state.Register("context", context)
return context
def testResourceUsageStats(self):
client_ids = self.SetupClients(10)
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(
flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(
pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS,
)
),
regex_rules=[rdfvalue.ForemanAttributeRegex(
attribute_name="GRR client",
attribute_regex="GRR")],
output_plugins=[], client_rate=0, token=self.token) as hunt:
hunt.Run()
with aff4.FACTORY.Open(
"aff4:/foreman", mode="rw", token=self.token) as foreman:
for client_id in client_ids:
foreman.AssignTasksToClient(client_id)
client_mock = test_lib.SampleHuntMock()
test_lib.TestHuntHelper(client_mock, client_ids, False, self.token)
hunt = aff4.FACTORY.Open(hunt.urn, aff4_type="GenericHunt",
token=self.token)
# This is called once for each state method. Each flow above runs the
# Start and the StoreResults methods.
usage_stats = hunt.state.context.usage_stats
self.assertEqual(usage_stats.user_cpu_stats.num, 10)
self.assertTrue(math.fabs(usage_stats.user_cpu_stats.mean -
5.5) < 1e-7)
self.assertTrue(math.fabs(usage_stats.user_cpu_stats.std -
2.8722813) < 1e-7)
self.assertEqual(usage_stats.system_cpu_stats.num, 10)
self.assertTrue(math.fabs(usage_stats.system_cpu_stats.mean -
11) < 1e-7)
self.assertTrue(math.fabs(usage_stats.system_cpu_stats.std -
5.7445626) < 1e-7)
self.assertEqual(usage_stats.network_bytes_sent_stats.num, 10)
self.assertTrue(math.fabs(usage_stats.network_bytes_sent_stats.mean -
16.5) < 1e-7)
self.assertTrue(math.fabs(usage_stats.network_bytes_sent_stats.std -
8.61684396) < 1e-7)
# NOTE: Not checking histograms here. RunningStatsTest tests that mean,
# standard deviation and histograms are calculated correctly. Therefore
# if mean/stdev values are correct histograms should be ok as well.
self.assertEqual(len(usage_stats.worst_performers), 10)
prev = usage_stats.worst_performers[0]
for p in usage_stats.worst_performers[1:]:
self.assertTrue(prev.cpu_usage.user_cpu_time +
prev.cpu_usage.system_cpu_time >
p.cpu_usage.user_cpu_time +
p.cpu_usage.system_cpu_time)
prev = p
def testHuntModificationWorksCorrectly(self):
"""This tests running the hunt on some clients."""
with hunts.GRRHunt.StartHunt(
hunt_name="GenericHunt",
flow_runner_args=rdfvalue.FlowRunnerArgs(flow_name="GetFile"),
flow_args=rdfvalue.GetFileArgs(
pathspec=rdfvalue.PathSpec(
path="/tmp/evil.txt",
pathtype=rdfvalue.PathSpec.PathType.OS),
),
regex_rules=[rdfvalue.ForemanAttributeRegex(
attribute_name="GRR client",
attribute_regex="GRR")],
client_limit=1,
client_rate=0,
token=self.token) as hunt:
hunt.Run()
# Forget about hunt object, we'll use AFF4 for everything.
hunt_session_id = hunt.session_id
hunt = None
# Pretend to be the foreman now and dish out hunting jobs to all the
# client..
with aff4.FACTORY.Open(
"aff4:/foreman", mode="rw", token=self.token) as foreman:
for client_id in self.client_ids:
foreman.AssignTasksToClient(client_id)
# Run the hunt.
client_mock = test_lib.SampleHuntMock()
test_lib.TestHuntHelper(client_mock, self.client_ids, False, self.token)
# Re-open the hunt to get fresh data.
hunt_obj = aff4.FACTORY.Open(hunt_session_id, age=aff4.ALL_TIMES,
ignore_cache=True, token=self.token)
started = hunt_obj.GetValuesForAttribute(hunt_obj.Schema.CLIENTS)
# There should be only one client, due to the limit
self.assertEqual(len(set(started)), 1)
# Check the hunt is paused.
self.assertEqual(hunt_obj.Get(hunt_obj.Schema.STATE), "PAUSED")
with aff4.FACTORY.Open(
hunt_session_id, mode="rw", token=self.token) as hunt_obj:
with hunt_obj.GetRunner() as runner:
runner.args.client_limit = 10
runner.Start()
# Pretend to be the foreman now and dish out hunting jobs to all the
# clients.
with aff4.FACTORY.Open(
"aff4:/foreman", mode="rw", token=self.token) as foreman:
for client_id in self.client_ids:
foreman.AssignTasksToClient(client_id)
test_lib.TestHuntHelper(client_mock, self.client_ids, False, self.token)
hunt_obj = aff4.FACTORY.Open(hunt_session_id, age=aff4.ALL_TIMES,
token=self.token)
started = hunt_obj.GetValuesForAttribute(hunt_obj.Schema.CLIENTS)
# There should be only one client, due to the limit
self.assertEqual(len(set(started)), 10)