Stop delay loading user32.dll from chrome.dll on x86/Windows.

base/win/delay_load_hook_unittest.cc

+// Copyright (c) 2013 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.
+
+#if defined(_WIN32_WINNT_WIN8) && _MSC_VER < 1700
+// The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h, and in
+// delayimp.h previous to VS2012.
+#undef FACILITY_VISUALCPP
+#endif
+#include <DelayIMP.h>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/scoped_native_library.h"
+#include "base/win/delay_load_hook.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+namespace win {
+
+namespace {
+
+class DelayLoadHookTest : public testing::Test {
+ public:
+  DelayLoadHookTest() : proc_ptr_(NULL) {
+  }
+
+  virtual void SetUp() OVERRIDE {
+    SetupInfo("kernel32.dll");
+  }
+
+  void SetupInfo(const char* dll_name) {
+    info_.cb = sizeof(info_);
+    info_.pidd =  NULL;
+    info_.ppfn = &proc_ptr_;
+    info_.szDll = dll_name;
+    info_.dlp.fImportByName = TRUE;
+    info_.dlp.szProcName = "CreateFileA";
+    info_.hmodCur = NULL;
+    info_.pfnCur = NULL;
+    info_.dwLastError = 0;
+  }
+
+  FARPROC proc_ptr_;
+  DelayLoadInfo info_;
+};
+
+}  // namespace
+
+TEST_F(DelayLoadHookTest, HooksAreSetAtLinkTime) {
+  // This test verifies that referencing the DelayLoadHook at link
+  // time results in overriding the delay loader's hook instances in the CRT
+  // ropriately.
+  EXPECT_TRUE(__pfnDliNotifyHook2 == DelayLoadHook);
+  EXPECT_TRUE(__pfnDliFailureHook2 == DelayLoadHook);
+}
+
+TEST_F(DelayLoadHookTest, NonSuffixedDllsAreNotHandled) {
+  // The hook should ignore non-suffixed DLLs.
+  SetupInfo("kernel32.dll");
+
+  HMODULE none = reinterpret_cast<HMODULE>(
+      DelayLoadHook(dliNotePreLoadLibrary, &info_));
+   // Make sure the library is released on exit.
+   base::ScopedNativeLibrary lib_holder(none);
+
+   ASSERT_TRUE(none == NULL);
+}
+
+TEST_F(DelayLoadHookTest, SuffixedDllsAreRedirected) {
+  // Check that a DLL name of the form "foo-delay.dll" gets redirected to
+  // the "foo.dll".
+  SetupInfo("kernel32-delay.dll");
+  HMODULE kernel32 = reinterpret_cast<HMODULE>(
+      DelayLoadHook(dliNotePreLoadLibrary, &info_));
+
+   // Make sure the library is released on exit.
+   base::ScopedNativeLibrary lib_holder(kernel32);
+
+   ASSERT_TRUE(kernel32 == ::GetModuleHandle(L"kernel32.dll"));
+
+}
+
+TEST_F(DelayLoadHookTest, IgnoresUnhandledNotifications) {
+  SetupInfo("kernel32-delay.dll");
+
+  // The hook should ignore all notifications but the preload notifications.
+  EXPECT_TRUE(DelayLoadHook(dliNoteStartProcessing, &info_) == NULL);
+  EXPECT_TRUE(DelayLoadHook(dliNotePreGetProcAddress, &info_) == NULL);
+  EXPECT_TRUE(DelayLoadHook(dliNoteEndProcessing, &info_) == NULL);
+  EXPECT_TRUE(DelayLoadHook(dliFailLoadLib, &info_) == NULL);
+  EXPECT_TRUE(DelayLoadHook(dliFailGetProc, &info_) == NULL);
+}
+
+}  // namespace win
+}  // namespace base