sandbox/win/src/handle_policy_test.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/strings/stringprintf.h"
   6 #include "sandbox/win/src/handle_policy.h"
   7 #include "sandbox/win/src/nt_internals.h"
   8 #include "sandbox/win/src/sandbox.h"
   9 #include "sandbox/win/src/sandbox_factory.h"
  10 #include "sandbox/win/src/sandbox_policy.h"
  11 #include "sandbox/win/src/win_utils.h"
  12 #include "sandbox/win/tests/common/controller.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace sandbox {
  16
  17 // Just waits for the supplied number of milliseconds.
  18 SBOX_TESTS_COMMAND int Handle_WaitProcess(int argc, wchar_t **argv) {
  19   if (argc != 1)
  20     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
  21
  22   ::Sleep(::wcstoul(argv[0], NULL, 10));
  23   return SBOX_TEST_TIMED_OUT;
  24 }
  25
  26 // Attempts to duplicate an event handle into the target process.
  27 SBOX_TESTS_COMMAND int Handle_DuplicateEvent(int argc, wchar_t **argv) {
  28   if (argc != 1)
  29     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
  30
  31   // Create a test event to use as a handle.
  32   base::win::ScopedHandle test_event;
  33   test_event.Set(::CreateEvent(NULL, TRUE, TRUE, NULL));
  34   if (!test_event.IsValid())
  35     return SBOX_TEST_FIRST_ERROR;
  36
  37   // Get the target process ID.
  38   DWORD target_process_id = ::wcstoul(argv[0], NULL, 10);
  39
  40   HANDLE handle = NULL;
  41   ResultCode result = SandboxFactory::GetTargetServices()->DuplicateHandle(
  42       test_event, target_process_id, &handle, 0, DUPLICATE_SAME_ACCESS);
  43
  44   return (result == SBOX_ALL_OK) ? SBOX_TEST_SUCCEEDED : SBOX_TEST_DENIED;
  45 }
  46
  47 // Tests that duplicating an object works only when the policy allows it.
  48 TEST(HandlePolicyTest, DuplicateHandle) {
  49   TestRunner target;
  50   TestRunner runner;
  51
  52   // Kick off an asynchronous target process for testing.
  53   target.SetAsynchronous(true);
  54   EXPECT_EQ(SBOX_TEST_SUCCEEDED, target.RunTest(L"Handle_WaitProcess 30000"));
  55
  56   // First test that we fail to open the event.
  57   std::wstring cmd_line = base::StringPrintf(L"Handle_DuplicateEvent %d",
  58                                              target.process_id());
  59   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(cmd_line.c_str()));
  60
  61   // Now successfully open the event after adding a duplicate handle rule.
  62   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_HANDLES,
  63                              TargetPolicy::HANDLES_DUP_ANY,
  64                              L"Event"));
  65   EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(cmd_line.c_str()));
  66 }
  67
  68 // Tests that duplicating an object works only when the policy allows it.
  69 TEST(HandlePolicyTest, DuplicatePeerHandle) {
  70   TestRunner target;
  71   TestRunner runner;
  72
  73   // Kick off an asynchronous target process for testing.
  74   target.SetAsynchronous(true);
  75   target.SetUnsandboxed(true);
  76   EXPECT_EQ(SBOX_TEST_SUCCEEDED, target.RunTest(L"Handle_WaitProcess 30000"));
  77
  78   // First test that we fail to open the event.
  79   std::wstring cmd_line = base::StringPrintf(L"Handle_DuplicateEvent %d",
  80                                              target.process_id());
  81   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(cmd_line.c_str()));
  82
  83   // Now successfully open the event after adding a duplicate handle rule.
  84   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_HANDLES,
  85                              TargetPolicy::HANDLES_DUP_ANY,
  86                              L"Event"));
  87   EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(cmd_line.c_str()));
  88 }
  89
  90 // Tests that duplicating an object works only when the policy allows it.
  91 TEST(HandlePolicyTest, DuplicateBrokerHandle) {
  92   TestRunner runner;
  93
  94   // First test that we fail to open the event.
  95   std::wstring cmd_line = base::StringPrintf(L"Handle_DuplicateEvent %d",
  96                                              ::GetCurrentProcessId());
  97   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(cmd_line.c_str()));
  98
  99   // Add the peer rule and make sure we fail again.
 100   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_HANDLES,
 101                              TargetPolicy::HANDLES_DUP_ANY,
 102                              L"Event"));
 103   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(cmd_line.c_str()));
 104
 105
 106   // Now successfully open the event after adding a broker handle rule.
 107   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_HANDLES,
 108                              TargetPolicy::HANDLES_DUP_BROKER,
 109                              L"Event"));
 110   EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(cmd_line.c_str()));
 111 }
 112
 113 }  // namespace sandbox
 114