Add a ModuleLoadAnalyzer which checks modules against a whitelist

chrome/browser/safe_browsing/incident_reporting/module_load_analyzer_win_unittest.cc

Index: chrome/browser/safe_browsing/incident_reporting/module_load_analyzer_win_unittest.cc
diff --git a/chrome/browser/safe_browsing/incident_reporting/module_load_analyzer_win_unittest.cc b/chrome/browser/safe_browsing/incident_reporting/module_load_analyzer_win_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fe90d2841e4a8bbe3092d51d41c4f144df6d2417
--- /dev/null
+++ b/chrome/browser/safe_browsing/incident_reporting/module_load_analyzer_win_unittest.cc
@@ -0,0 +1,123 @@
+// Copyright 2014 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 "chrome/browser/safe_browsing/incident_reporting/module_load_analyzer.h"
+
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "base/path_service.h"
+#include "base/run_loop.h"
+#include "base/scoped_native_library.h"
+#include "base/strings/string_util.h"
+#include "chrome/browser/safe_browsing/incident_reporting/incident.h"
+#include "chrome/browser/safe_browsing/incident_reporting/incident_receiver.h"
+#include "chrome/browser/safe_browsing/incident_reporting/mock_incident_receiver.h"
+#include "chrome/common/safe_browsing/csd.pb.h"
+#include "components/safe_browsing_db/database_manager.h"
+#include "components/safe_browsing_db/test_database_manager.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_utils.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::IsNull;
+using ::testing::Return;
+using ::testing::StrictMock;
+using ::testing::_;
+
+namespace safe_browsing {
+
+namespace {
+const char kWhitelistedModuleName[] = "USER32.dll";
+const char kLowerWhitelistedModuleName[] = "user32.dll";
+
+const char kNonWhitelistedModuleName[] = "blacklist_test_dll_1.dll";
+
+class MockSafeBrowsingDatabaseManager : public TestSafeBrowsingDatabaseManager {
+ public:
+  MockSafeBrowsingDatabaseManager() {}
+
+  MOCK_METHOD1(MatchModuleWhitelistString, bool(const std::string&));
+
+ private:
+  virtual ~MockSafeBrowsingDatabaseManager() {}
+  DISALLOW_COPY_AND_ASSIGN(MockSafeBrowsingDatabaseManager);
+};
+
+class ModuleLoadAnalayzerTest : public testing::Test {
+ protected:
+  ModuleLoadAnalayzerTest()
+      : mock_incident_receiver_(
+            new StrictMock<safe_browsing::MockIncidentReceiver>()),
+        mock_safe_browsing_database_manager_(
+            new MockSafeBrowsingDatabaseManager()),
+        module_load_analyzer_(mock_safe_browsing_database_manager_) {
+    // Accept all dlls except kNonWhitelistedModuleName.
+    EXPECT_CALL(*mock_safe_browsing_database_manager_,
+                MatchModuleWhitelistString(_))
+        .WillRepeatedly(Return(true));
+    EXPECT_CALL(*mock_safe_browsing_database_manager_,
+                MatchModuleWhitelistString(kNonWhitelistedModuleName))
+        .WillRepeatedly(Return(false));
+  }
+
+  void ExpectIncident(const std::string& module_to_load) {
+    base::FilePath current_dir;
+    ASSERT_TRUE(PathService::Get(base::DIR_EXE, &current_dir));
+    base::ScopedNativeLibrary dll1(current_dir.AppendASCII(module_to_load));
+
+    scoped_ptr<Incident> incident;
+    EXPECT_CALL(*mock_incident_receiver_, DoAddIncidentForProcess(_))
+        .WillOnce(TakeIncident(&incident));
+
+    module_load_analyzer_.VerifyModuleLoadState(
+        make_scoped_ptr(mock_incident_receiver_));
+
+    base::RunLoop().RunUntilIdle();
+    content::RunAllBlockingPoolTasksUntilIdle();
+
+    ASSERT_TRUE(incident);
+    scoped_ptr<ClientIncidentReport_IncidentData> incident_data =
+        incident->TakePayload();
+    ASSERT_TRUE(incident_data->has_suspicious_module());
+    const ClientIncidentReport_IncidentData_SuspiciousModuleIncident&
+        suspicious_module_incident = incident_data->suspicious_module();
+    EXPECT_TRUE(suspicious_module_incident.has_digest());
+    EXPECT_TRUE(base::StartsWith(suspicious_module_incident.path(),
+                                 module_to_load, base::CompareCase::SENSITIVE));
+  }
+
+  void ExpectNoIncident(const std::string& module_to_load) {
+    base::FilePath current_dir;
+    ASSERT_TRUE(PathService::Get(base::DIR_EXE, &current_dir));
+    base::ScopedNativeLibrary dll1(current_dir.AppendASCII(module_to_load));
+
+    EXPECT_CALL(*mock_incident_receiver_, DoAddIncidentForProcess(_)).Times(0);
+
+    module_load_analyzer_.VerifyModuleLoadState(
+        make_scoped_ptr(mock_incident_receiver_));
+
+    base::RunLoop().RunUntilIdle();
+    content::RunAllBlockingPoolTasksUntilIdle();
+  }
+
+  content::TestBrowserThreadBundle browser_thread_bundle_;
+  StrictMock<safe_browsing::MockIncidentReceiver>* mock_incident_receiver_;
+  scoped_refptr<MockSafeBrowsingDatabaseManager>
+      mock_safe_browsing_database_manager_;
+  ModuleLoadAnalyzer module_load_analyzer_;
+};
+
+}  // namespace
+
+TEST_F(ModuleLoadAnalayzerTest, TestWhitelistedDLLs) {
+  ExpectNoIncident(kWhitelistedModuleName);
+}
+
+TEST_F(ModuleLoadAnalayzerTest, TestNonWhitelistedDLLs) {
+  ExpectIncident(kNonWhitelistedModuleName);
+}
+
+}  // namespace safe_browsing