cfm: Add App ID for intended Packaged App

Creates a helper function to determine if the value passed by
extensions::Extension::id(), which returns extensions::ExtensionsID,
is a valid app id for a Packaged Application supported by the
Chromebox For Meeting platform.

BUG=chromium:1105567
TEST='autoninja -C out/Default chromeos:chromeos_unittests &&
./out/Default/chromeos_unittests --dbus-stub --single-process-tests
--gtest_filter=CfmAppIdUtilTest.*'

Change-Id: I84e85563119afcb564407f88c214aa649ad79626
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2304334
Commit-Queue: Kyle Williams <kdgwill@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791148}

chromeos/services/cfm/public/cpp/BUILD.gn

@@ -6,6 +6,8 @@ assert(is_chromeos, "Non-ChromeOS builds cannot depend on //chromeos")
 
 source_set("cpp") {
   sources = [
+    "appid_util.cc",
+    "appid_util.h",
     "service_connection.cc",
     "service_connection.h",
   ]
@@ -33,7 +35,10 @@ source_set("test_support") {
 
 source_set("unit_tests") {
   testonly = true
-  sources = [ "service_connection_unittest.cc" ]
+  sources = [
+    "appid_util_unittest.cc",
+    "service_connection_unittest.cc",
+  ]
   deps = [
     ":cpp",
     ":test_support",

chromeos/services/cfm/public/cpp/appid_util.cc

+// Copyright 2020 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 "chromeos/services/cfm/public/cpp/appid_util.h"
+
+#include <base/stl_util.h>
+
+namespace chromeos {
+namespace cfm {
+
+namespace {
+// List of whitelisted internal App IDs for CfM.
+constexpr char const* kInternalHotrodAppIds[] = {
+    "moklfjoegmpoolceggbebbmgbddlhdgp",  // Stable
+    "ldmpofkllgeicjiihkimgeccbhghhmfj",  // Beta
+    "denipklgekfpcdmbahmbpnmokgajnhma"   // Alpha
+    "kjfhgcncjdebkoofmbjoiemiboifnpbo",  // Dev
+    // Keep in sync with app_info.ts (go/googlehotrodappids).
+};
+
+// List of whitelisted external App IDs for CfM.
+constexpr char const* kExternalHotrodAppIds[] = {
+    "ikfcpmgefdpheiiomgmhlmmkihchmdlj",  // Stable
+    "jlgegmdnodfhciolbdjciihnlaljdbjo",  // Beta
+    "lkbhffjfgpmpeppncnimiiikojibkhnm",  // Alpha
+    "acdafoiapclbpdkhnighhilgampkglpc",  // Dev
+    "hkamnlhnogggfddmjomgbdokdkgfelgg",  // TestGaia
+    // Keep in sync with app_info.ts (go/hotrodappids).
+};
+
+// Returns true if the ID provided matches a valid internal hotrod appid.
+bool IsInternalHotrodAppId(const std::string& app_id) {
+  return base::Contains(kInternalHotrodAppIds, app_id);
+}
+
+// Returns true if the ID provided matches a valid external hotrod appid.
+bool IsExternalHotrodAppId(const std::string& app_id) {
+  return base::Contains(kExternalHotrodAppIds, app_id);
+}
+
+}  // namespace
+
+bool IsChromeboxForMeetingsAppId(const std::string& app_id) {
+  return IsExternalHotrodAppId(app_id) || IsInternalHotrodAppId(app_id);
+}
+
+}  // namespace cfm
+}  // namespace chromeos

chromeos/services/cfm/public/cpp/appid_util.h

+// Copyright 2020 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.
+
+#ifndef CHROMEOS_SERVICES_CFM_PUBLIC_CPP_APPID_UTIL_H_
+#define CHROMEOS_SERVICES_CFM_PUBLIC_CPP_APPID_UTIL_H_
+
+#include <string>
+
+namespace chromeos {
+namespace cfm {
+
+// Returns true if the id provided matches a valid CfM PA/PWA appid.
+bool IsChromeboxForMeetingsAppId(const std::string& app_id);
+
+}  // namespace cfm
+}  // namespace chromeos
+
+#endif  // CHROMEOS_SERVICES_CFM_PUBLIC_CPP_APPID_UTIL_H_

chromeos/services/cfm/public/cpp/appid_util_unittest.cc

+// Copyright 2020 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 "chromeos/services/cfm/public/cpp/appid_util.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {
+namespace cfm {
+namespace {
+
+using CfmAppIdUtilTest = testing::Test;
+
+TEST_F(CfmAppIdUtilTest, AppIdIsTrue) {
+  std::string app_id = "hkamnlhnogggfddmjomgbdokdkgfelgg";
+  ASSERT_TRUE(IsChromeboxForMeetingsAppId(app_id));
+}
+
+TEST_F(CfmAppIdUtilTest, AppIdIsFalse) {
+  std::string app_id = "FAKE_APP_ID";
+  ASSERT_FALSE(IsChromeboxForMeetingsAppId(app_id));
+}
+
+}  // namespace
+}  // namespace cfm
+}  // namespace chromeos