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comparison: security/sandbox/win/src/policy_target_test.cc

security/sandbox/win/src/policy_target_test.cc

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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/win/scoped_process_information.h"
6 #include "base/win/windows_version.h"
7 #include "sandbox/win/src/sandbox.h"
8 #include "sandbox/win/src/sandbox_factory.h"
9 #include "sandbox/win/src/sandbox_utils.h"
10 #include "sandbox/win/src/target_services.h"
11 #include "sandbox/win/tests/common/controller.h"
12 #include "testing/gtest/include/gtest/gtest.h"
13
14 namespace sandbox {
15
16 #define BINDNTDLL(name) \
17 name ## Function name = reinterpret_cast<name ## Function>( \
18 ::GetProcAddress(::GetModuleHandle(L"ntdll.dll"), #name))
19
20 // Reverts to self and verify that SetInformationToken was faked. Returns
21 // SBOX_TEST_SUCCEEDED if faked and SBOX_TEST_FAILED if not faked.
22 SBOX_TESTS_COMMAND int PolicyTargetTest_token(int argc, wchar_t **argv) {
23 HANDLE thread_token;
24 // Get the thread token, using impersonation.
25 if (!::OpenThreadToken(GetCurrentThread(), TOKEN_IMPERSONATE |
26 TOKEN_DUPLICATE, FALSE, &thread_token))
27 return ::GetLastError();
28
29 ::RevertToSelf();
30 ::CloseHandle(thread_token);
31
32 int ret = SBOX_TEST_FAILED;
33 if (::OpenThreadToken(GetCurrentThread(), TOKEN_IMPERSONATE | TOKEN_DUPLICATE,
34 FALSE, &thread_token)) {
35 ret = SBOX_TEST_SUCCEEDED;
36 ::CloseHandle(thread_token);
37 }
38 return ret;
39 }
40
41 // Stores the high privilege token on a static variable, change impersonation
42 // again to that one and verify that we are not interfering anymore with
43 // RevertToSelf.
44 SBOX_TESTS_COMMAND int PolicyTargetTest_steal(int argc, wchar_t **argv) {
45 static HANDLE thread_token;
46 if (!SandboxFactory::GetTargetServices()->GetState()->RevertedToSelf()) {
47 if (!::OpenThreadToken(GetCurrentThread(), TOKEN_IMPERSONATE |
48 TOKEN_DUPLICATE, FALSE, &thread_token))
49 return ::GetLastError();
50 } else {
51 if (!::SetThreadToken(NULL, thread_token))
52 return ::GetLastError();
53
54 // See if we fake the call again.
55 int ret = PolicyTargetTest_token(argc, argv);
56 ::CloseHandle(thread_token);
57 return ret;
58 }
59 return 0;
60 }
61
62 // Opens the thread token with and without impersonation.
63 SBOX_TESTS_COMMAND int PolicyTargetTest_token2(int argc, wchar_t **argv) {
64 HANDLE thread_token;
65 // Get the thread token, using impersonation.
66 if (!::OpenThreadToken(GetCurrentThread(), TOKEN_IMPERSONATE |
67 TOKEN_DUPLICATE, FALSE, &thread_token))
68 return ::GetLastError();
69 ::CloseHandle(thread_token);
70
71 // Get the thread token, without impersonation.
72 if (!OpenThreadToken(GetCurrentThread(), TOKEN_IMPERSONATE | TOKEN_DUPLICATE,
73 TRUE, &thread_token))
74 return ::GetLastError();
75 ::CloseHandle(thread_token);
76 return SBOX_TEST_SUCCEEDED;
77 }
78
79 // Opens the thread token with and without impersonation, using
80 // NtOpenThreadTokenEX.
81 SBOX_TESTS_COMMAND int PolicyTargetTest_token3(int argc, wchar_t **argv) {
82 BINDNTDLL(NtOpenThreadTokenEx);
83 if (!NtOpenThreadTokenEx)
84 return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
85
86 HANDLE thread_token;
87 // Get the thread token, using impersonation.
88 NTSTATUS status = NtOpenThreadTokenEx(GetCurrentThread(),
89 TOKEN_IMPERSONATE | TOKEN_DUPLICATE,
90 FALSE, 0, &thread_token);
91 if (status == STATUS_NO_TOKEN)
92 return ERROR_NO_TOKEN;
93 if (!NT_SUCCESS(status))
94 return SBOX_TEST_FAILED;
95
96 ::CloseHandle(thread_token);
97
98 // Get the thread token, without impersonation.
99 status = NtOpenThreadTokenEx(GetCurrentThread(),
100 TOKEN_IMPERSONATE | TOKEN_DUPLICATE, TRUE, 0,
101 &thread_token);
102 if (!NT_SUCCESS(status))
103 return SBOX_TEST_FAILED;
104
105 ::CloseHandle(thread_token);
106 return SBOX_TEST_SUCCEEDED;
107 }
108
109 // Tests that we can open the current thread.
110 SBOX_TESTS_COMMAND int PolicyTargetTest_thread(int argc, wchar_t **argv) {
111 DWORD thread_id = ::GetCurrentThreadId();
112 HANDLE thread = ::OpenThread(SYNCHRONIZE, FALSE, thread_id);
113 if (!thread)
114 return ::GetLastError();
115 if (!::CloseHandle(thread))
116 return ::GetLastError();
117
118 return SBOX_TEST_SUCCEEDED;
119 }
120
121 // New thread entry point: do nothing.
122 DWORD WINAPI PolicyTargetTest_thread_main(void* param) {
123 ::Sleep(INFINITE);
124 return 0;
125 }
126
127 // Tests that we can create a new thread, and open it.
128 SBOX_TESTS_COMMAND int PolicyTargetTest_thread2(int argc, wchar_t **argv) {
129 // Use default values to create a new thread.
130 DWORD thread_id;
131 HANDLE thread = ::CreateThread(NULL, 0, &PolicyTargetTest_thread_main, 0, 0,
132 &thread_id);
133 if (!thread)
134 return ::GetLastError();
135 if (!::CloseHandle(thread))
136 return ::GetLastError();
137
138 thread = ::OpenThread(SYNCHRONIZE, FALSE, thread_id);
139 if (!thread)
140 return ::GetLastError();
141
142 if (!::CloseHandle(thread))
143 return ::GetLastError();
144
145 return SBOX_TEST_SUCCEEDED;
146 }
147
148 // Tests that we can call CreateProcess.
149 SBOX_TESTS_COMMAND int PolicyTargetTest_process(int argc, wchar_t **argv) {
150 // Use default values to create a new process.
151 STARTUPINFO startup_info = {0};
152 startup_info.cb = sizeof(startup_info);
153 base::win::ScopedProcessInformation process_info;
154 if (!::CreateProcessW(L"foo.exe", L"foo.exe", NULL, NULL, FALSE, 0,
155 NULL, NULL, &startup_info, process_info.Receive()))
156 return SBOX_TEST_SUCCEEDED;
157 return SBOX_TEST_FAILED;
158 }
159
160 TEST(PolicyTargetTest, SetInformationThread) {
161 TestRunner runner;
162 if (base::win::GetVersion() >= base::win::VERSION_XP) {
163 runner.SetTestState(BEFORE_REVERT);
164 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"PolicyTargetTest_token"));
165 }
166
167 runner.SetTestState(AFTER_REVERT);
168 EXPECT_EQ(ERROR_NO_TOKEN, runner.RunTest(L"PolicyTargetTest_token"));
169
170 runner.SetTestState(EVERY_STATE);
171 if (base::win::GetVersion() >= base::win::VERSION_XP)
172 EXPECT_EQ(SBOX_TEST_FAILED, runner.RunTest(L"PolicyTargetTest_steal"));
173 }
174
175 TEST(PolicyTargetTest, OpenThreadToken) {
176 TestRunner runner;
177 if (base::win::GetVersion() >= base::win::VERSION_XP) {
178 runner.SetTestState(BEFORE_REVERT);
179 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"PolicyTargetTest_token2"));
180 }
181
182 runner.SetTestState(AFTER_REVERT);
183 EXPECT_EQ(ERROR_NO_TOKEN, runner.RunTest(L"PolicyTargetTest_token2"));
184 }
185
186 TEST(PolicyTargetTest, OpenThreadTokenEx) {
187 TestRunner runner;
188 if (base::win::GetVersion() < base::win::VERSION_XP)
189 return;
190
191 runner.SetTestState(BEFORE_REVERT);
192 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"PolicyTargetTest_token3"));
193
194 runner.SetTestState(AFTER_REVERT);
195 EXPECT_EQ(ERROR_NO_TOKEN, runner.RunTest(L"PolicyTargetTest_token3"));
196 }
197
198 TEST(PolicyTargetTest, OpenThread) {
199 TestRunner runner;
200 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"PolicyTargetTest_thread")) <<
201 "Opens the current thread";
202
203 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"PolicyTargetTest_thread2")) <<
204 "Creates a new thread and opens it";
205 }
206
207 TEST(PolicyTargetTest, OpenProcess) {
208 TestRunner runner;
209 EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"PolicyTargetTest_process")) <<
210 "Opens a process";
211 }
212
213 // Launches the app in the sandbox and ask it to wait in an
214 // infinite loop. Waits for 2 seconds and then check if the
215 // desktop associated with the app thread is not the same as the
216 // current desktop.
217 TEST(PolicyTargetTest, DesktopPolicy) {
218 BrokerServices* broker = GetBroker();
219
220 // Precreate the desktop.
221 TargetPolicy* temp_policy = broker->CreatePolicy();
222 temp_policy->CreateAlternateDesktop(false);
223 temp_policy->Release();
224
225 ASSERT_TRUE(broker != NULL);
226
227 // Get the path to the sandboxed app.
228 wchar_t prog_name[MAX_PATH];
229 GetModuleFileNameW(NULL, prog_name, MAX_PATH);
230
231 std::wstring arguments(L"\"");
232 arguments += prog_name;
233 arguments += L"\" -child 0 wait"; // Don't care about the "state" argument.
234
235 // Launch the app.
236 ResultCode result = SBOX_ALL_OK;
237 base::win::ScopedProcessInformation target;
238
239 TargetPolicy* policy = broker->CreatePolicy();
240 policy->SetAlternateDesktop(false);
241 policy->SetTokenLevel(USER_INTERACTIVE, USER_LOCKDOWN);
242 result = broker->SpawnTarget(prog_name, arguments.c_str(), policy,
243 target.Receive());
244 policy->Release();
245
246 EXPECT_EQ(SBOX_ALL_OK, result);
247
248 EXPECT_EQ(1, ::ResumeThread(target.thread_handle()));
249
250 EXPECT_EQ(WAIT_TIMEOUT, ::WaitForSingleObject(target.process_handle(), 2000));
251
252 EXPECT_NE(::GetThreadDesktop(target.thread_id()),
253 ::GetThreadDesktop(::GetCurrentThreadId()));
254
255 std::wstring desktop_name = policy->GetAlternateDesktop();
256 HDESK desk = ::OpenDesktop(desktop_name.c_str(), 0, FALSE, DESKTOP_ENUMERATE);
257 EXPECT_TRUE(NULL != desk);
258 EXPECT_TRUE(::CloseDesktop(desk));
259 EXPECT_TRUE(::TerminateProcess(target.process_handle(), 0));
260
261 ::WaitForSingleObject(target.process_handle(), INFINITE);
262
263 // Close the desktop handle.
264 temp_policy = broker->CreatePolicy();
265 temp_policy->DestroyAlternateDesktop();
266 temp_policy->Release();
267
268 // Make sure the desktop does not exist anymore.
269 desk = ::OpenDesktop(desktop_name.c_str(), 0, FALSE, DESKTOP_ENUMERATE);
270 EXPECT_TRUE(NULL == desk);
271 }
272
273 // Launches the app in the sandbox and ask it to wait in an
274 // infinite loop. Waits for 2 seconds and then check if the
275 // winstation associated with the app thread is not the same as the
276 // current desktop.
277 TEST(PolicyTargetTest, WinstaPolicy) {
278 BrokerServices* broker = GetBroker();
279
280 // Precreate the desktop.
281 TargetPolicy* temp_policy = broker->CreatePolicy();
282 temp_policy->CreateAlternateDesktop(true);
283 temp_policy->Release();
284
285 ASSERT_TRUE(broker != NULL);
286
287 // Get the path to the sandboxed app.
288 wchar_t prog_name[MAX_PATH];
289 GetModuleFileNameW(NULL, prog_name, MAX_PATH);
290
291 std::wstring arguments(L"\"");
292 arguments += prog_name;
293 arguments += L"\" -child 0 wait"; // Don't care about the "state" argument.
294
295 // Launch the app.
296 ResultCode result = SBOX_ALL_OK;
297 base::win::ScopedProcessInformation target;
298
299 TargetPolicy* policy = broker->CreatePolicy();
300 policy->SetAlternateDesktop(true);
301 policy->SetTokenLevel(USER_INTERACTIVE, USER_LOCKDOWN);
302 result = broker->SpawnTarget(prog_name, arguments.c_str(), policy,
303 target.Receive());
304 policy->Release();
305
306 EXPECT_EQ(SBOX_ALL_OK, result);
307
308 EXPECT_EQ(1, ::ResumeThread(target.thread_handle()));
309
310 EXPECT_EQ(WAIT_TIMEOUT, ::WaitForSingleObject(target.process_handle(), 2000));
311
312 EXPECT_NE(::GetThreadDesktop(target.thread_id()),
313 ::GetThreadDesktop(::GetCurrentThreadId()));
314
315 std::wstring desktop_name = policy->GetAlternateDesktop();
316 ASSERT_FALSE(desktop_name.empty());
317
318 // Make sure there is a backslash, for the window station name.
319 EXPECT_NE(desktop_name.find_first_of(L'\\'), std::wstring::npos);
320
321 // Isolate the desktop name.
322 desktop_name = desktop_name.substr(desktop_name.find_first_of(L'\\') + 1);
323
324 HDESK desk = ::OpenDesktop(desktop_name.c_str(), 0, FALSE, DESKTOP_ENUMERATE);
325 // This should fail if the desktop is really on another window station.
326 EXPECT_FALSE(NULL != desk);
327 EXPECT_TRUE(::TerminateProcess(target.process_handle(), 0));
328
329 ::WaitForSingleObject(target.process_handle(), INFINITE);
330
331 // Close the desktop handle.
332 temp_policy = broker->CreatePolicy();
333 temp_policy->DestroyAlternateDesktop();
334 temp_policy->Release();
335 }
336
337 } // namespace sandbox

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