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-rw-r--r--sandbox/src/interception_unittest.cc212
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diff --git a/sandbox/src/interception_unittest.cc b/sandbox/src/interception_unittest.cc
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-// Copyright (c) 2011 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.
-
-// This file contains unit tests for InterceptionManager.
-// The tests require private information so the whole interception.cc file is
-// included from this file.
-
-#include <windows.h>
-
-#include "base/memory/scoped_ptr.h"
-#include "sandbox/src/interception.h"
-#include "sandbox/src/interceptors.h"
-#include "sandbox/src/interception_internal.h"
-#include "sandbox/src/target_process.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace sandbox {
-
-// Walks the settings buffer, verifying that the values make sense and counting
-// objects.
-// Arguments:
-// buffer (in): the buffer to walk.
-// size (in): buffer size
-// num_dlls (out): count of the dlls on the buffer.
-// num_function (out): count of intercepted functions.
-// num_names (out): count of named interceptor functions.
-void WalkBuffer(void* buffer, size_t size, int* num_dlls, int* num_functions,
- int* num_names) {
- ASSERT_TRUE(NULL != buffer);
- ASSERT_TRUE(NULL != num_functions);
- ASSERT_TRUE(NULL != num_names);
- *num_dlls = *num_functions = *num_names = 0;
- SharedMemory *memory = reinterpret_cast<SharedMemory*>(buffer);
-
- ASSERT_GT(size, sizeof(SharedMemory));
- DllPatchInfo *dll = &memory->dll_list[0];
-
- for (int i = 0; i < memory->num_intercepted_dlls; i++) {
- ASSERT_NE(0u, wcslen(dll->dll_name));
- ASSERT_EQ(0u, dll->record_bytes % sizeof(size_t));
- ASSERT_EQ(0u, dll->offset_to_functions % sizeof(size_t));
- ASSERT_NE(0, dll->num_functions);
-
- FunctionInfo *function = reinterpret_cast<FunctionInfo*>(
- reinterpret_cast<char*>(dll) + dll->offset_to_functions);
-
- for (int j = 0; j < dll->num_functions; j++) {
- ASSERT_EQ(0u, function->record_bytes % sizeof(size_t));
-
- char* name = function->function;
- size_t length = strlen(name);
- ASSERT_NE(0u, length);
- name += length + 1;
-
- // look for overflows
- ASSERT_GT(reinterpret_cast<char*>(buffer) + size, name + strlen(name));
-
- // look for a named interceptor
- if (strlen(name)) {
- (*num_names)++;
- EXPECT_TRUE(NULL == function->interceptor_address);
- } else {
- EXPECT_TRUE(NULL != function->interceptor_address);
- }
-
- (*num_functions)++;
- function = reinterpret_cast<FunctionInfo*>(
- reinterpret_cast<char*>(function) + function->record_bytes);
- }
-
- (*num_dlls)++;
- dll = reinterpret_cast<DllPatchInfo*>(reinterpret_cast<char*>(dll) +
- dll->record_bytes);
- }
-}
-
-TEST(InterceptionManagerTest, BufferLayout1) {
- wchar_t exe_name[MAX_PATH];
- ASSERT_NE(0u, GetModuleFileName(NULL, exe_name, MAX_PATH - 1));
-
- TargetProcess *target = MakeTestTargetProcess(::GetCurrentProcess(),
- ::GetModuleHandle(exe_name));
-
- InterceptionManager interceptions(target, true);
-
- // Any pointer will do for a function pointer.
- void* function = &interceptions;
-
- // We don't care about the interceptor id.
- interceptions.AddToPatchedFunctions(L"ntdll.dll", "NtCreateFile",
- INTERCEPTION_SERVICE_CALL, function,
- OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"kernel32.dll", "CreateFileEx",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"kernel32.dll", "SomeFileEx",
- INTERCEPTION_SMART_SIDESTEP, function,
- OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"user32.dll", "FindWindow",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"kernel32.dll", "CreateMutex",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"user32.dll", "PostMsg",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"user32.dll", "PostMsg",
- INTERCEPTION_EAT, "replacement",
- OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"comctl.dll", "SaveAsDlg",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"ntdll.dll", "NtClose",
- INTERCEPTION_SERVICE_CALL, function,
- OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"ntdll.dll", "NtOpenFile",
- INTERCEPTION_SIDESTEP, function,
- OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"some.dll", "Superfn",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"comctl.dll", "SaveAsDlg",
- INTERCEPTION_EAT, "a", OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"comctl.dll", "SaveAsDlg",
- INTERCEPTION_SIDESTEP, "ab", OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"comctl.dll", "SaveAsDlg",
- INTERCEPTION_EAT, "abc", OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"a.dll", "p",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"b.dll",
- "TheIncredibleCallToSaveTheWorld",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"a.dll", "BIsLame",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
- interceptions.AddToPatchedFunctions(L"a.dll", "ARules",
- INTERCEPTION_EAT, function, OPEN_KEY_ID);
-
- // Verify that all interceptions were added
- ASSERT_EQ(18, interceptions.interceptions_.size());
-
- size_t buffer_size = interceptions.GetBufferSize();
- scoped_array<BYTE> local_buffer(new BYTE[buffer_size]);
-
- ASSERT_TRUE(interceptions.SetupConfigBuffer(local_buffer.get(),
- buffer_size));
-
- // At this point, the interceptions should have been separated into two
- // groups: one group with the local ("cold") interceptions, consisting of
- // everything from ntdll and stuff set as INTRECEPTION_SERVICE_CALL, and
- // another group with the interceptions belonging to dlls that will be "hot"
- // patched on the client. The second group lives on local_buffer, and the
- // first group remains on the list of interceptions (inside the object
- // "interceptions"). There are 3 local interceptions (of ntdll); the
- // other 15 have to be sent to the child to be performed "hot".
- EXPECT_EQ(3, interceptions.interceptions_.size());
-
- int num_dlls, num_functions, num_names;
- WalkBuffer(local_buffer.get(), buffer_size, &num_dlls, &num_functions,
- &num_names);
-
- // The 15 interceptions on the buffer (to the child) should be grouped on 6
- // dlls. Only four interceptions are using an explicit name for the
- // interceptor function.
- EXPECT_EQ(6, num_dlls);
- EXPECT_EQ(15, num_functions);
- EXPECT_EQ(4, num_names);
-}
-
-TEST(InterceptionManagerTest, BufferLayout2) {
- wchar_t exe_name[MAX_PATH];
- ASSERT_NE(0u, GetModuleFileName(NULL, exe_name, MAX_PATH - 1));
-
- TargetProcess *target = MakeTestTargetProcess(::GetCurrentProcess(),
- ::GetModuleHandle(exe_name));
-
- InterceptionManager interceptions(target, true);
-
- // Any pointer will do for a function pointer.
- void* function = &interceptions;
- interceptions.AddToUnloadModules(L"some01.dll");
- // We don't care about the interceptor id.
- interceptions.AddToPatchedFunctions(L"ntdll.dll", "NtCreateFile",
- INTERCEPTION_SERVICE_CALL, function,
- OPEN_FILE_ID);
- interceptions.AddToPatchedFunctions(L"kernel32.dll", "CreateFileEx",
- INTERCEPTION_EAT, function, OPEN_FILE_ID);
- interceptions.AddToUnloadModules(L"some02.dll");
- interceptions.AddToPatchedFunctions(L"kernel32.dll", "SomeFileEx",
- INTERCEPTION_SMART_SIDESTEP, function,
- OPEN_FILE_ID);
- // Verify that all interceptions were added
- ASSERT_EQ(5, interceptions.interceptions_.size());
-
- size_t buffer_size = interceptions.GetBufferSize();
- scoped_array<BYTE> local_buffer(new BYTE[buffer_size]);
-
- ASSERT_TRUE(interceptions.SetupConfigBuffer(local_buffer.get(),
- buffer_size));
-
- // At this point, the interceptions should have been separated into two
- // groups: one group with the local ("cold") interceptions, and another
- // group with the interceptions belonging to dlls that will be "hot"
- // patched on the client. The second group lives on local_buffer, and the
- // first group remains on the list of interceptions, in this case just one.
- EXPECT_EQ(1, interceptions.interceptions_.size());
-
- int num_dlls, num_functions, num_names;
- WalkBuffer(local_buffer.get(), buffer_size, &num_dlls, &num_functions,
- &num_names);
-
- EXPECT_EQ(3, num_dlls);
- EXPECT_EQ(4, num_functions);
- EXPECT_EQ(0, num_names);
-}
-
-} // namespace sandbox
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