The Tor Browser: security/sandbox/win/src/process_policy

security/sandbox/win/src/process_policy_test.cc@6474c204b198 (annotated)

security/sandbox/win/src/process_policy_test.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #include <memory>
 #include <string>
 #include "base/strings/string16.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/win/scoped_handle.h"
 #include "base/win/scoped_process_information.h"
 #include "base/win/windows_version.h"
 #include "sandbox/win/src/sandbox.h"
 #include "sandbox/win/src/sandbox_factory.h"
 #include "sandbox/win/src/sandbox_policy.h"
 #include "sandbox/win/tests/common/controller.h"
 #include "testing/gtest/include/gtest/gtest.h"
 namespace {
 // While the shell API provides better calls than this home brew function
 // we use GetSystemWindowsDirectoryW which does not query the registry so
 // it is safe to use after revert.
 string16 MakeFullPathToSystem32(const wchar_t* name) {
   wchar_t windows_path[MAX_PATH] = {0};
   ::GetSystemWindowsDirectoryW(windows_path, MAX_PATH);
   string16 full_path(windows_path);
   if (full_path.empty()) {
     return full_path;
   }
   full_path += L"\\system32\\";
   full_path += name;
   return full_path;
 }
 // Creates a process with the |exe| and |command| parameter using the
 // unicode and ascii version of the api.
 sandbox::SboxTestResult CreateProcessHelper(const string16& exe,
                                             const string16& command) {
   base::win::ScopedProcessInformation pi;
   STARTUPINFOW si = {sizeof(si)};
   const wchar_t *exe_name = NULL;
   if (!exe.empty())
     exe_name = exe.c_str();
   const wchar_t *cmd_line = NULL;
   if (!command.empty())
     cmd_line = command.c_str();
   // Create the process with the unicode version of the API.
   sandbox::SboxTestResult ret1 = sandbox::SBOX_TEST_FAILED;
   if (!::CreateProcessW(exe_name, const_cast<wchar_t*>(cmd_line), NULL, NULL,
                         FALSE, 0, NULL, NULL, &si, pi.Receive())) {
     DWORD last_error = GetLastError();
     if ((ERROR_NOT_ENOUGH_QUOTA == last_error) ||
         (ERROR_ACCESS_DENIED == last_error) ||
         (ERROR_FILE_NOT_FOUND == last_error)) {
       ret1 = sandbox::SBOX_TEST_DENIED;
     } else {
       ret1 = sandbox::SBOX_TEST_FAILED;
     }
   } else {
     ret1 = sandbox::SBOX_TEST_SUCCEEDED;
   }
   pi.Close();
   // Do the same with the ansi version of the api
   STARTUPINFOA sia = {sizeof(sia)};
   sandbox::SboxTestResult ret2 = sandbox::SBOX_TEST_FAILED;
   std::string narrow_cmd_line;
   if (cmd_line)
     narrow_cmd_line = base::SysWideToMultiByte(cmd_line, CP_UTF8);
   if (!::CreateProcessA(
         exe_name ? base::SysWideToMultiByte(exe_name, CP_UTF8).c_str() : NULL,
         cmd_line ? const_cast<char*>(narrow_cmd_line.c_str()) : NULL,
         NULL, NULL, FALSE, 0, NULL, NULL, &sia, pi.Receive())) {
     DWORD last_error = GetLastError();
     if ((ERROR_NOT_ENOUGH_QUOTA == last_error) ||
         (ERROR_ACCESS_DENIED == last_error) ||
         (ERROR_FILE_NOT_FOUND == last_error)) {
       ret2 = sandbox::SBOX_TEST_DENIED;
     } else {
       ret2 = sandbox::SBOX_TEST_FAILED;
     }
   } else {
     ret2 = sandbox::SBOX_TEST_SUCCEEDED;
   }
   if (ret1 == ret2)
     return ret1;
   return sandbox::SBOX_TEST_FAILED;
 }
 }  // namespace
 namespace sandbox {
 SBOX_TESTS_COMMAND int Process_RunApp1(int argc, wchar_t **argv) {
   if (argc != 1) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   if ((NULL == argv) || (NULL == argv[0])) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   string16 path = MakeFullPathToSystem32(argv[0]);
   // TEST 1: Try with the path in the app_name.
   return CreateProcessHelper(path, string16());
 }
 SBOX_TESTS_COMMAND int Process_RunApp2(int argc, wchar_t **argv) {
   if (argc != 1) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   if ((NULL == argv) || (NULL == argv[0])) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   string16 path = MakeFullPathToSystem32(argv[0]);
   // TEST 2: Try with the path in the cmd_line.
   string16 cmd_line = L"\"";
   cmd_line += path;
   cmd_line += L"\"";
   return CreateProcessHelper(string16(), cmd_line);
 }
 SBOX_TESTS_COMMAND int Process_RunApp3(int argc, wchar_t **argv) {
   if (argc != 1) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   if ((NULL == argv) || (NULL == argv[0])) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   // TEST 3: Try file name in the cmd_line.
   return CreateProcessHelper(string16(), argv[0]);
 }
 SBOX_TESTS_COMMAND int Process_RunApp4(int argc, wchar_t **argv) {
   if (argc != 1) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   if ((NULL == argv) || (NULL == argv[0])) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   // TEST 4: Try file name in the app_name and current directory sets correctly.
   string16 system32 = MakeFullPathToSystem32(L"");
   wchar_t current_directory[MAX_PATH + 1];
   int result4;
   bool test_succeeded = false;
   DWORD ret = ::GetCurrentDirectory(MAX_PATH, current_directory);
   if (!ret)
     return SBOX_TEST_FIRST_ERROR;
   if (ret < MAX_PATH) {
     current_directory[ret] = L'\\';
     current_directory[ret+1] = L'\0';
     if (::SetCurrentDirectory(system32.c_str())) {
       result4 = CreateProcessHelper(argv[0], string16());
       if (::SetCurrentDirectory(current_directory)) {
         test_succeeded = true;
       }
     } else {
       return SBOX_TEST_SECOND_ERROR;
     }
   }
   if (!test_succeeded)
     result4 = SBOX_TEST_FAILED;
   return result4;
 }
 SBOX_TESTS_COMMAND int Process_RunApp5(int argc, wchar_t **argv) {
   if (argc != 1) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   if ((NULL == argv) || (NULL == argv[0])) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   string16 path = MakeFullPathToSystem32(argv[0]);
   // TEST 5: Try with the path in the cmd_line and arguments.
   string16 cmd_line = L"\"";
   cmd_line += path;
   cmd_line += L"\" /I";
   return CreateProcessHelper(string16(), cmd_line);
 }
 SBOX_TESTS_COMMAND int Process_RunApp6(int argc, wchar_t **argv) {
   if (argc != 1) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   if ((NULL == argv) || (NULL == argv[0])) {
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   }
   // TEST 6: Try with the file_name in the cmd_line and arguments.
   string16 cmd_line = argv[0];
   cmd_line += L" /I";
   return CreateProcessHelper(string16(), cmd_line);
 }
 // Creates a process and checks if it's possible to get a handle to it's token.
 SBOX_TESTS_COMMAND int Process_GetChildProcessToken(int argc, wchar_t **argv) {
   if (argc != 1)
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   if ((NULL == argv) || (NULL == argv[0]))
     return SBOX_TEST_FAILED_TO_EXECUTE_COMMAND;
   string16 path = MakeFullPathToSystem32(argv[0]);
   base::win::ScopedProcessInformation pi;
   STARTUPINFOW si = {sizeof(si)};
   if (!::CreateProcessW(path.c_str(), NULL, NULL, NULL, FALSE, CREATE_SUSPENDED,
                         NULL, NULL, &si, pi.Receive())) {
       return SBOX_TEST_FAILED;
   }
   HANDLE token = NULL;
   BOOL result =
       ::OpenProcessToken(pi.process_handle(), TOKEN_IMPERSONATE, &token);
   DWORD error = ::GetLastError();
   base::win::ScopedHandle token_handle(token);
   if (!::TerminateProcess(pi.process_handle(), 0))
     return SBOX_TEST_FAILED;
   if (result && token)
     return SBOX_TEST_SUCCEEDED;
   if (ERROR_ACCESS_DENIED == error)
     return SBOX_TEST_DENIED;
   return SBOX_TEST_FAILED;
 }
 SBOX_TESTS_COMMAND int Process_OpenToken(int argc, wchar_t **argv) {
   HANDLE token;
   if (!::OpenProcessToken(::GetCurrentProcess(), TOKEN_ALL_ACCESS, &token)) {
     if (ERROR_ACCESS_DENIED == ::GetLastError()) {
       return SBOX_TEST_DENIED;
     }
   } else {
     ::CloseHandle(token);
     return SBOX_TEST_SUCCEEDED;
   }
   return SBOX_TEST_FAILED;
 }
 TEST(ProcessPolicyTest, TestAllAccess) {
   // Check if the "all access" rule fails to be added when the token is too
   // powerful.
   TestRunner runner;
   // Check the failing case.
   runner.GetPolicy()->SetTokenLevel(USER_INTERACTIVE, USER_LOCKDOWN);
   EXPECT_EQ(SBOX_ERROR_UNSUPPORTED,
             runner.GetPolicy()->AddRule(TargetPolicy::SUBSYS_PROCESS,
                                         TargetPolicy::PROCESS_ALL_EXEC,
                                         L"this is not important"));
   // Check the working case.
   runner.GetPolicy()->SetTokenLevel(USER_INTERACTIVE, USER_INTERACTIVE);
   EXPECT_EQ(SBOX_ALL_OK,
             runner.GetPolicy()->AddRule(TargetPolicy::SUBSYS_PROCESS,
                                         TargetPolicy::PROCESS_ALL_EXEC,
                                         L"this is not important"));
 }
 TEST(ProcessPolicyTest, CreateProcessAW) {
   TestRunner runner;
   string16 exe_path = MakeFullPathToSystem32(L"findstr.exe");
   string16 system32 = MakeFullPathToSystem32(L"");
   ASSERT_TRUE(!exe_path.empty());
   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_PROCESS,
                              TargetPolicy::PROCESS_MIN_EXEC,
                              exe_path.c_str()));
   // Need to add directory rules for the directories that we use in
   // SetCurrentDirectory.
   EXPECT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_DIR_ANY,
                                system32.c_str()));
   wchar_t current_directory[MAX_PATH];
   DWORD ret = ::GetCurrentDirectory(MAX_PATH, current_directory);
   ASSERT_TRUE(0 != ret && ret < MAX_PATH);
   wcscat_s(current_directory, MAX_PATH, L"\\");
   EXPECT_TRUE(runner.AddFsRule(TargetPolicy::FILES_ALLOW_DIR_ANY,
                                current_directory));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Process_RunApp1 calc.exe"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Process_RunApp2 calc.exe"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Process_RunApp3 calc.exe"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Process_RunApp5 calc.exe"));
   EXPECT_EQ(SBOX_TEST_DENIED, runner.RunTest(L"Process_RunApp6 calc.exe"));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_RunApp1 findstr.exe"));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_RunApp2 findstr.exe"));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_RunApp3 findstr.exe"));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_RunApp5 findstr.exe"));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_RunApp6 findstr.exe"));
 #if !defined(_WIN64)
   if (base::win::OSInfo::GetInstance()->version() >= base::win::VERSION_VISTA) {
     // WinXP results are not reliable.
     EXPECT_EQ(SBOX_TEST_SECOND_ERROR,
         runner.RunTest(L"Process_RunApp4 calc.exe"));
     EXPECT_EQ(SBOX_TEST_SECOND_ERROR,
         runner.RunTest(L"Process_RunApp4 findstr.exe"));
   }
 #endif
 }
 TEST(ProcessPolicyTest, OpenToken) {
   TestRunner runner;
   EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"Process_OpenToken"));
 }
 TEST(ProcessPolicyTest, TestGetProcessTokenMinAccess) {
   TestRunner runner;
   string16 exe_path = MakeFullPathToSystem32(L"findstr.exe");
   ASSERT_TRUE(!exe_path.empty());
   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_PROCESS,
                              TargetPolicy::PROCESS_MIN_EXEC,
                              exe_path.c_str()));
   EXPECT_EQ(SBOX_TEST_DENIED,
             runner.RunTest(L"Process_GetChildProcessToken findstr.exe"));
 }
 TEST(ProcessPolicyTest, TestGetProcessTokenMaxAccess) {
   TestRunner runner(JOB_UNPROTECTED, USER_INTERACTIVE, USER_INTERACTIVE);
   string16 exe_path = MakeFullPathToSystem32(L"findstr.exe");
   ASSERT_TRUE(!exe_path.empty());
   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_PROCESS,
                              TargetPolicy::PROCESS_ALL_EXEC,
                              exe_path.c_str()));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_GetChildProcessToken findstr.exe"));
 }
 TEST(ProcessPolicyTest, TestGetProcessTokenMinAccessNoJob) {
   TestRunner runner(JOB_NONE, USER_RESTRICTED_SAME_ACCESS, USER_LOCKDOWN);
   string16 exe_path = MakeFullPathToSystem32(L"findstr.exe");
   ASSERT_TRUE(!exe_path.empty());
   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_PROCESS,
                              TargetPolicy::PROCESS_MIN_EXEC,
                              exe_path.c_str()));
   EXPECT_EQ(SBOX_TEST_DENIED,
             runner.RunTest(L"Process_GetChildProcessToken findstr.exe"));
 }
 TEST(ProcessPolicyTest, TestGetProcessTokenMaxAccessNoJob) {
   TestRunner runner(JOB_NONE, USER_INTERACTIVE, USER_INTERACTIVE);
   string16 exe_path = MakeFullPathToSystem32(L"findstr.exe");
   ASSERT_TRUE(!exe_path.empty());
   EXPECT_TRUE(runner.AddRule(TargetPolicy::SUBSYS_PROCESS,
                              TargetPolicy::PROCESS_ALL_EXEC,
                              exe_path.c_str()));
   EXPECT_EQ(SBOX_TEST_SUCCEEDED,
             runner.RunTest(L"Process_GetChildProcessToken findstr.exe"));
 }
 }  // namespace sandbox

The Tor Browser / annotate

security/sandbox/win/src/process_policy_test.cc@6474c204b198 (annotated)

security/sandbox/win/src/process_policy_test.cc