cmds/idmap2/tests/ResourceMappingTests.cpp - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2018 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include <cstdio>  // fclose
 #include <fstream>
 #include <memory>
 #include <sstream>
 #include <string>
 #include <utility>
 #include <vector>

 #include "TestHelpers.h"
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 #include "idmap2/LogInfo.h"
 #include "idmap2/ResourceMapping.h"

 using android::Res_value;
 using android::idmap2::utils::ExtractOverlayManifestInfo;

 namespace android::idmap2 {

 #define ASSERT_RESULT(r)                             \
   do {                                               \
     auto result = r;                                 \
     ASSERT_TRUE(result) << result.GetErrorMessage(); \
   } while (0)

 Result<ResourceMapping> TestGetResourceMapping(const android::StringPiece& local_target_apk_path,
                                                const android::StringPiece& local_overlay_apk_path,
                                                const OverlayManifestInfo& overlay_info,
                                                const PolicyBitmask& fulfilled_policies,
                                                bool enforce_overlayable) {
   const std::string target_apk_path(GetTestDataPath() + local_target_apk_path.data());
   std::unique_ptr<const ApkAssets> target_apk = ApkAssets::Load(target_apk_path);
   if (!target_apk) {
     return Error(R"(Failed to load target apk "%s")", target_apk_path.data());
   }

   const std::string overlay_apk_path(GetTestDataPath() + local_overlay_apk_path.data());
   std::unique_ptr<const ApkAssets> overlay_apk = ApkAssets::Load(overlay_apk_path);
   if (!overlay_apk) {
     return Error(R"(Failed to load overlay apk "%s")", overlay_apk_path.data());
   }

   LogInfo log_info;
   return ResourceMapping::FromApkAssets(*target_apk, *overlay_apk, overlay_info, fulfilled_policies,
                                         enforce_overlayable, log_info);
 }

 Result<ResourceMapping> TestGetResourceMapping(const android::StringPiece& local_target_apk_path,
                                                const android::StringPiece& local_overlay_apk_path,
                                                const PolicyBitmask& fulfilled_policies,
                                                bool enforce_overlayable) {
   auto overlay_info = ExtractOverlayManifestInfo(GetTestDataPath() + local_overlay_apk_path.data());
   if (!overlay_info) {
     return overlay_info.GetError();
   }
   return TestGetResourceMapping(local_target_apk_path, local_overlay_apk_path, *overlay_info,
                                 fulfilled_policies, enforce_overlayable);
 }

 Result<Unit> MappingExists(const ResourceMapping& mapping, const ResourceId& target_resource,
                            const uint8_t type, const uint32_t value, bool rewrite) {
   auto target_map = mapping.GetTargetToOverlayMap();
   auto entry_map = target_map.find(target_resource);
   if (entry_map == target_map.end()) {
     return Error("Failed to find mapping for target resource");
   }

   if (entry_map->second.data_type != type) {
     return Error(R"(Expected type: "0x%02x" Actual type: "0x%02x")", type,
                  entry_map->second.data_type);
   }

   if (entry_map->second.data_value != value) {
     return Error(R"(Expected value: "0x%08x" Actual value: "0x%08x")", type,
                  entry_map->second.data_value);
   }

   auto overlay_map = mapping.GetOverlayToTargetMap();
   auto overlay_iter = overlay_map.find(entry_map->second.data_value);
   if ((overlay_iter != overlay_map.end()) != rewrite) {
     return Error(R"(Expected rewriting: "%s")", rewrite ? "true" : "false");
   }

   return Result<Unit>({});
 }

 TEST(ResourceMappingTests, ResourcesFromApkAssetsLegacy) {
   OverlayManifestInfo info{};
   info.target_package = "test.target";
   info.target_name = "TestResources";
   info.resource_mapping = 0U;  // no xml
   auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
                                           PolicyFlags::POLICY_PUBLIC,
                                           /* enforce_overlayable */ false);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 4U);
   ASSERT_RESULT(MappingExists(res, 0x7f010000, Res_value::TYPE_REFERENCE, 0x7f010000,
                               false /* rewrite */));  // integer/int1
   ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_REFERENCE, 0x7f020000,
                               false /* rewrite */));  // string/str1
   ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_REFERENCE, 0x7f020001,
                               false /* rewrite */));  // string/str3
   ASSERT_RESULT(MappingExists(res, 0x7f02000f, Res_value::TYPE_REFERENCE, 0x7f020002,
                               false /* rewrite */));  // string/str4
 }

 TEST(ResourceMappingTests, ResourcesFromApkAssetsNonMatchingNames) {
   OverlayManifestInfo info{};
   info.target_package = "test.target";
   info.target_name = "TestResources";
   info.resource_mapping = 0x7f030003;  // xml/overlays_swap
   auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
                                           PolicyFlags::POLICY_PUBLIC,
                                           /* enforce_overlayable */ false);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
   ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020002,
                               true /* rewrite */));  // string/str1 -> string/str4
   ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020000,
                               true /* rewrite */));  // string/str3 -> string/str1
   ASSERT_RESULT(MappingExists(res, 0x7f02000f, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020001,
                               true /* rewrite */));  // string/str4 -> string/str3
 }

 TEST(ResourceMappingTests, DoNotRewriteNonOverlayResourceId) {
   OverlayManifestInfo info{};
   info.target_package = "test.target";
   info.target_name = "TestResources";
   info.resource_mapping = 0x7f030001;  // xml/overlays_different_packages
   auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
                                           PolicyFlags::POLICY_PUBLIC,
                                           /* enforce_overlayable */ false);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 2U);
   ASSERT_EQ(res.GetOverlayToTargetMap().size(), 1U);
   ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_REFERENCE, 0x0104000a,
                               false /* rewrite */));  // string/str1 -> android:string/ok
   ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020001,
                               true /* rewrite */));  // string/str3 -> string/str4
 }

 TEST(ResourceMappingTests, InlineResources) {
   OverlayManifestInfo info{};
   info.target_package = "test.target";
   info.target_name = "TestResources";
   info.resource_mapping = 0x7f030002;  // xml/overlays_inline
   auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
                                           PolicyFlags::POLICY_PUBLIC,
                                           /* enforce_overlayable */ false);

   constexpr size_t overlay_string_pool_size = 8U;
   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 2U);
   ASSERT_EQ(res.GetOverlayToTargetMap().size(), 0U);
   ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_STRING,
                               overlay_string_pool_size + 0U,
                               false /* rewrite */));  // string/str1 -> "Hello World"
   ASSERT_RESULT(MappingExists(res, 0x7f010000, Res_value::TYPE_INT_DEC, 73U,
                               false /* rewrite */));  // string/str1 -> "Hello World"
 }

 TEST(ResourceMappingTests, CreateIdmapFromApkAssetsPolicySystemPublic) {
   auto resources =
       TestGetResourceMapping("/target/target.apk", "/system-overlay/system-overlay.apk",
                              PolicyFlags::POLICY_SYSTEM_PARTITION | PolicyFlags::POLICY_PUBLIC,
                              /* enforce_overlayable */ true);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
   ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010000,
                               false /* rewrite */));  // string/policy_public
   ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010001,
                               false /* rewrite */));  // string/policy_system
   ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010002,
                               false /* rewrite */));  // string/policy_system_vendor
 }

 // Resources that are not declared as overlayable and resources that a protected by policies the
 // overlay does not fulfill must not map to overlay resources.
 TEST(ResourceMappingTests, CreateIdmapFromApkAssetsPolicySystemPublicInvalid) {
   auto resources = TestGetResourceMapping(
       "/target/target.apk", "/system-overlay-invalid/system-overlay-invalid.apk",
       PolicyFlags::POLICY_SYSTEM_PARTITION | PolicyFlags::POLICY_PUBLIC,
       /* enforce_overlayable */ true);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
   ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010005,
                               false /* rewrite */));  // string/policy_public
   ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010007,
                               false /* rewrite */));  // string/policy_system
   ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010008,
                               false /* rewrite */));  // string/policy_system_vendor
 }

 // Resources that are not declared as overlayable and resources that a protected by policies the
 // overlay does not fulfilled can map to overlay resources when overlayable enforcement is turned
 // off.
 TEST(ResourceMappingTests, ResourcesFromApkAssetsPolicySystemPublicInvalidIgnoreOverlayable) {
   auto resources = TestGetResourceMapping(
       "/target/target.apk", "/system-overlay-invalid/system-overlay-invalid.apk",
       PolicyFlags::POLICY_SYSTEM_PARTITION | PolicyFlags::POLICY_PUBLIC,
       /* enforce_overlayable */ false);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 9U);
   ASSERT_RESULT(MappingExists(res, 0x7f020003, Res_value::TYPE_REFERENCE, 0x7f010000,
                               false /* rewrite */));  // string/not_overlayable
   ASSERT_RESULT(MappingExists(res, 0x7f020004, Res_value::TYPE_REFERENCE, 0x7f010001,
                               false /* rewrite */));  // string/other
   ASSERT_RESULT(MappingExists(res, 0x7f020005, Res_value::TYPE_REFERENCE, 0x7f010002,
                               false /* rewrite */));  // string/policy_odm
   ASSERT_RESULT(MappingExists(res, 0x7f020006, Res_value::TYPE_REFERENCE, 0x7f010003,
                               false /* rewrite */));  // string/policy_oem
   ASSERT_RESULT(MappingExists(res, 0x7f020007, Res_value::TYPE_REFERENCE, 0x7f010004,
                               false /* rewrite */));  // string/policy_product
   ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010005,
                               false /* rewrite */));  // string/policy_public
   ASSERT_RESULT(MappingExists(res, 0x7f020009, Res_value::TYPE_REFERENCE, 0x7f010006,
                               false /* rewrite */));  // string/policy_signature
   ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010007,
                               false /* rewrite */));  // string/policy_system
   ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010008,
                               false /* rewrite */));  // string/policy_system_vendor
 }

 // Overlays that do not target an <overlayable> tag can overlay resources defined within any
 // <overlayable> tag.
 TEST(ResourceMappingTests, ResourcesFromApkAssetsNoDefinedOverlayableAndNoTargetName) {
   auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay-no-name.apk",
                                           PolicyFlags::POLICY_PUBLIC,
                                           /* enforce_overlayable */ false);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   auto& res = *resources;
   ASSERT_EQ(res.GetTargetToOverlayMap().size(), 4U);
   ASSERT_RESULT(MappingExists(res, 0x7f010000, Res_value::TYPE_REFERENCE, 0x7f010000,
                               false /* rewrite */));  // integer/int1
   ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_REFERENCE, 0x7f020000,
                               false /* rewrite */));  // string/str1
   ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_REFERENCE, 0x7f020001,
                               false /* rewrite */));  // string/str3
   ASSERT_RESULT(MappingExists(res, 0x7f02000f, Res_value::TYPE_REFERENCE, 0x7f020002,
                               false /* rewrite */));  // string/str4
 }

 // Overlays that are neither pre-installed nor signed with the same signature as the target cannot
 // overlay packages that have not defined overlayable resources.
 TEST(ResourceMappingTests, ResourcesFromApkAssetsDefaultPoliciesPublicFail) {
   auto resources =
       TestGetResourceMapping("/target/target-no-overlayable.apk", "/overlay/overlay-no-name.apk",
                              PolicyFlags::POLICY_PUBLIC,
                              /* enforce_overlayable */ true);

   ASSERT_TRUE(resources) << resources.GetErrorMessage();
   ASSERT_EQ(resources->GetTargetToOverlayMap().size(), 0U);
 }

 // Overlays that are pre-installed or are signed with the same signature as the target can overlay
 // packages that have not defined overlayable resources.
 TEST(ResourceMappingTests, ResourcesFromApkAssetsDefaultPolicies) {
   auto CheckEntries = [&](const PolicyBitmask& fulfilled_policies) -> void {
     auto resources = TestGetResourceMapping("/target/target-no-overlayable.apk",
                                             "/system-overlay-invalid/system-overlay-invalid.apk",
                                             fulfilled_policies,
                                             /* enforce_overlayable */ true);

     ASSERT_TRUE(resources) << resources.GetErrorMessage();
     auto& res = *resources;
     ASSERT_EQ(resources->GetTargetToOverlayMap().size(), 9U);
     ASSERT_RESULT(MappingExists(res, 0x7f020003, Res_value::TYPE_REFERENCE, 0x7f010000,
                                 false /* rewrite */));  // string/not_overlayable
     ASSERT_RESULT(MappingExists(res, 0x7f020004, Res_value::TYPE_REFERENCE, 0x7f010001,
                                 false /* rewrite */));  // string/other
     ASSERT_RESULT(MappingExists(res, 0x7f020005, Res_value::TYPE_REFERENCE, 0x7f010002,
                                 false /* rewrite */));  // string/policy_odm
     ASSERT_RESULT(MappingExists(res, 0x7f020006, Res_value::TYPE_REFERENCE, 0x7f010003,
                                 false /* rewrite */));  // string/policy_oem
     ASSERT_RESULT(MappingExists(res, 0x7f020007, Res_value::TYPE_REFERENCE, 0x7f010004,
                                 false /* rewrite */));  // string/policy_product
     ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010005,
                                 false /* rewrite */));  // string/policy_public
     ASSERT_RESULT(MappingExists(res, 0x7f020009, Res_value::TYPE_REFERENCE, 0x7f010006,
                                 false /* rewrite */));  // string/policy_signature
     ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010007,
                                 false /* rewrite */));  // string/policy_system
     ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010008,
                                 false /* rewrite */));  // string/policy_system_vendor
   };

   CheckEntries(PolicyFlags::POLICY_SIGNATURE);
   CheckEntries(PolicyFlags::POLICY_PRODUCT_PARTITION);
   CheckEntries(PolicyFlags::POLICY_SYSTEM_PARTITION);
   CheckEntries(PolicyFlags::POLICY_VENDOR_PARTITION);
   CheckEntries(PolicyFlags::POLICY_ODM_PARTITION);
   CheckEntries(PolicyFlags::POLICY_OEM_PARTITION);
 }

 }  // namespace android::idmap2
	/*
	* Copyright (C) 2018 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include <cstdio> // fclose
	#include <fstream>
	#include <memory>
	#include <sstream>
	#include <string>
	#include <utility>
	#include <vector>

	#include "TestHelpers.h"
	#include "gmock/gmock.h"
	#include "gtest/gtest.h"
	#include "idmap2/LogInfo.h"
	#include "idmap2/ResourceMapping.h"

	using android::Res_value;
	using android::idmap2::utils::ExtractOverlayManifestInfo;

	namespace android::idmap2 {

	#define ASSERT_RESULT(r) \
	do { \
	auto result = r; \
	ASSERT_TRUE(result) << result.GetErrorMessage(); \
	} while (0)

	Result<ResourceMapping> TestGetResourceMapping(const android::StringPiece& local_target_apk_path,
	const android::StringPiece& local_overlay_apk_path,
	const OverlayManifestInfo& overlay_info,
	const PolicyBitmask& fulfilled_policies,
	bool enforce_overlayable) {
	const std::string target_apk_path(GetTestDataPath() + local_target_apk_path.data());
	std::unique_ptr<const ApkAssets> target_apk = ApkAssets::Load(target_apk_path);
	if (!target_apk) {
	return Error(R"(Failed to load target apk "%s")", target_apk_path.data());
	}

	const std::string overlay_apk_path(GetTestDataPath() + local_overlay_apk_path.data());
	std::unique_ptr<const ApkAssets> overlay_apk = ApkAssets::Load(overlay_apk_path);
	if (!overlay_apk) {
	return Error(R"(Failed to load overlay apk "%s")", overlay_apk_path.data());
	}

	LogInfo log_info;
	return ResourceMapping::FromApkAssets(target_apk, overlay_apk, overlay_info, fulfilled_policies,
	enforce_overlayable, log_info);
	}

	Result<ResourceMapping> TestGetResourceMapping(const android::StringPiece& local_target_apk_path,
	const android::StringPiece& local_overlay_apk_path,
	const PolicyBitmask& fulfilled_policies,
	bool enforce_overlayable) {
	auto overlay_info = ExtractOverlayManifestInfo(GetTestDataPath() + local_overlay_apk_path.data());
	if (!overlay_info) {
	return overlay_info.GetError();
	}
	return TestGetResourceMapping(local_target_apk_path, local_overlay_apk_path, *overlay_info,
	fulfilled_policies, enforce_overlayable);
	}

	Result<Unit> MappingExists(const ResourceMapping& mapping, const ResourceId& target_resource,
	const uint8_t type, const uint32_t value, bool rewrite) {
	auto target_map = mapping.GetTargetToOverlayMap();
	auto entry_map = target_map.find(target_resource);
	if (entry_map == target_map.end()) {
	return Error("Failed to find mapping for target resource");
	}

	if (entry_map->second.data_type != type) {
	return Error(R"(Expected type: "0x%02x" Actual type: "0x%02x")", type,
	entry_map->second.data_type);
	}

	if (entry_map->second.data_value != value) {
	return Error(R"(Expected value: "0x%08x" Actual value: "0x%08x")", type,
	entry_map->second.data_value);
	}

	auto overlay_map = mapping.GetOverlayToTargetMap();
	auto overlay_iter = overlay_map.find(entry_map->second.data_value);
	if ((overlay_iter != overlay_map.end()) != rewrite) {
	return Error(R"(Expected rewriting: "%s")", rewrite ? "true" : "false");
	}

	return Result<Unit>({});
	}

	TEST(ResourceMappingTests, ResourcesFromApkAssetsLegacy) {
	OverlayManifestInfo info{};
	info.target_package = "test.target";
	info.target_name = "TestResources";
	info.resource_mapping = 0U; // no xml
	auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
	PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ false);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 4U);
	ASSERT_RESULT(MappingExists(res, 0x7f010000, Res_value::TYPE_REFERENCE, 0x7f010000,
	false /* rewrite */)); // integer/int1
	ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_REFERENCE, 0x7f020000,
	false /* rewrite */)); // string/str1
	ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_REFERENCE, 0x7f020001,
	false /* rewrite */)); // string/str3
	ASSERT_RESULT(MappingExists(res, 0x7f02000f, Res_value::TYPE_REFERENCE, 0x7f020002,
	false /* rewrite */)); // string/str4
	}

	TEST(ResourceMappingTests, ResourcesFromApkAssetsNonMatchingNames) {
	OverlayManifestInfo info{};
	info.target_package = "test.target";
	info.target_name = "TestResources";
	info.resource_mapping = 0x7f030003; // xml/overlays_swap
	auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
	PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ false);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
	ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020002,
	true /* rewrite */)); // string/str1 -> string/str4
	ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020000,
	true /* rewrite */)); // string/str3 -> string/str1
	ASSERT_RESULT(MappingExists(res, 0x7f02000f, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020001,
	true /* rewrite */)); // string/str4 -> string/str3
	}

	TEST(ResourceMappingTests, DoNotRewriteNonOverlayResourceId) {
	OverlayManifestInfo info{};
	info.target_package = "test.target";
	info.target_name = "TestResources";
	info.resource_mapping = 0x7f030001; // xml/overlays_different_packages
	auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
	PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ false);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 2U);
	ASSERT_EQ(res.GetOverlayToTargetMap().size(), 1U);
	ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_REFERENCE, 0x0104000a,
	false /* rewrite */)); // string/str1 -> android:string/ok
	ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_DYNAMIC_REFERENCE, 0x7f020001,
	true /* rewrite */)); // string/str3 -> string/str4
	}

	TEST(ResourceMappingTests, InlineResources) {
	OverlayManifestInfo info{};
	info.target_package = "test.target";
	info.target_name = "TestResources";
	info.resource_mapping = 0x7f030002; // xml/overlays_inline
	auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay.apk", info,
	PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ false);

	constexpr size_t overlay_string_pool_size = 8U;
	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 2U);
	ASSERT_EQ(res.GetOverlayToTargetMap().size(), 0U);
	ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_STRING,
	overlay_string_pool_size + 0U,
	false /* rewrite */)); // string/str1 -> "Hello World"
	ASSERT_RESULT(MappingExists(res, 0x7f010000, Res_value::TYPE_INT_DEC, 73U,
	false /* rewrite */)); // string/str1 -> "Hello World"
	}

	TEST(ResourceMappingTests, CreateIdmapFromApkAssetsPolicySystemPublic) {
	auto resources =
	TestGetResourceMapping("/target/target.apk", "/system-overlay/system-overlay.apk",
	PolicyFlags::POLICY_SYSTEM_PARTITION \| PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ true);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
	ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010000,
	false /* rewrite */)); // string/policy_public
	ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010001,
	false /* rewrite */)); // string/policy_system
	ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010002,
	false /* rewrite */)); // string/policy_system_vendor
	}

	// Resources that are not declared as overlayable and resources that a protected by policies the
	// overlay does not fulfill must not map to overlay resources.
	TEST(ResourceMappingTests, CreateIdmapFromApkAssetsPolicySystemPublicInvalid) {
	auto resources = TestGetResourceMapping(
	"/target/target.apk", "/system-overlay-invalid/system-overlay-invalid.apk",
	PolicyFlags::POLICY_SYSTEM_PARTITION \| PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ true);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
	ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010005,
	false /* rewrite */)); // string/policy_public
	ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010007,
	false /* rewrite */)); // string/policy_system
	ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010008,
	false /* rewrite */)); // string/policy_system_vendor
	}

	// Resources that are not declared as overlayable and resources that a protected by policies the
	// overlay does not fulfilled can map to overlay resources when overlayable enforcement is turned
	// off.
	TEST(ResourceMappingTests, ResourcesFromApkAssetsPolicySystemPublicInvalidIgnoreOverlayable) {
	auto resources = TestGetResourceMapping(
	"/target/target.apk", "/system-overlay-invalid/system-overlay-invalid.apk",
	PolicyFlags::POLICY_SYSTEM_PARTITION \| PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ false);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 9U);
	ASSERT_RESULT(MappingExists(res, 0x7f020003, Res_value::TYPE_REFERENCE, 0x7f010000,
	false /* rewrite */)); // string/not_overlayable
	ASSERT_RESULT(MappingExists(res, 0x7f020004, Res_value::TYPE_REFERENCE, 0x7f010001,
	false /* rewrite */)); // string/other
	ASSERT_RESULT(MappingExists(res, 0x7f020005, Res_value::TYPE_REFERENCE, 0x7f010002,
	false /* rewrite */)); // string/policy_odm
	ASSERT_RESULT(MappingExists(res, 0x7f020006, Res_value::TYPE_REFERENCE, 0x7f010003,
	false /* rewrite */)); // string/policy_oem
	ASSERT_RESULT(MappingExists(res, 0x7f020007, Res_value::TYPE_REFERENCE, 0x7f010004,
	false /* rewrite */)); // string/policy_product
	ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010005,
	false /* rewrite */)); // string/policy_public
	ASSERT_RESULT(MappingExists(res, 0x7f020009, Res_value::TYPE_REFERENCE, 0x7f010006,
	false /* rewrite */)); // string/policy_signature
	ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010007,
	false /* rewrite */)); // string/policy_system
	ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010008,
	false /* rewrite */)); // string/policy_system_vendor
	}

	// Overlays that do not target an <overlayable> tag can overlay resources defined within any
	// <overlayable> tag.
	TEST(ResourceMappingTests, ResourcesFromApkAssetsNoDefinedOverlayableAndNoTargetName) {
	auto resources = TestGetResourceMapping("/target/target.apk", "/overlay/overlay-no-name.apk",
	PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ false);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(res.GetTargetToOverlayMap().size(), 4U);
	ASSERT_RESULT(MappingExists(res, 0x7f010000, Res_value::TYPE_REFERENCE, 0x7f010000,
	false /* rewrite */)); // integer/int1
	ASSERT_RESULT(MappingExists(res, 0x7f02000c, Res_value::TYPE_REFERENCE, 0x7f020000,
	false /* rewrite */)); // string/str1
	ASSERT_RESULT(MappingExists(res, 0x7f02000e, Res_value::TYPE_REFERENCE, 0x7f020001,
	false /* rewrite */)); // string/str3
	ASSERT_RESULT(MappingExists(res, 0x7f02000f, Res_value::TYPE_REFERENCE, 0x7f020002,
	false /* rewrite */)); // string/str4
	}

	// Overlays that are neither pre-installed nor signed with the same signature as the target cannot
	// overlay packages that have not defined overlayable resources.
	TEST(ResourceMappingTests, ResourcesFromApkAssetsDefaultPoliciesPublicFail) {
	auto resources =
	TestGetResourceMapping("/target/target-no-overlayable.apk", "/overlay/overlay-no-name.apk",
	PolicyFlags::POLICY_PUBLIC,
	/* enforce_overlayable */ true);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	ASSERT_EQ(resources->GetTargetToOverlayMap().size(), 0U);
	}

	// Overlays that are pre-installed or are signed with the same signature as the target can overlay
	// packages that have not defined overlayable resources.
	TEST(ResourceMappingTests, ResourcesFromApkAssetsDefaultPolicies) {
	auto CheckEntries = [&](const PolicyBitmask& fulfilled_policies) -> void {
	auto resources = TestGetResourceMapping("/target/target-no-overlayable.apk",
	"/system-overlay-invalid/system-overlay-invalid.apk",
	fulfilled_policies,
	/* enforce_overlayable */ true);

	ASSERT_TRUE(resources) << resources.GetErrorMessage();
	auto& res = *resources;
	ASSERT_EQ(resources->GetTargetToOverlayMap().size(), 9U);
	ASSERT_RESULT(MappingExists(res, 0x7f020003, Res_value::TYPE_REFERENCE, 0x7f010000,
	false /* rewrite */)); // string/not_overlayable
	ASSERT_RESULT(MappingExists(res, 0x7f020004, Res_value::TYPE_REFERENCE, 0x7f010001,
	false /* rewrite */)); // string/other
	ASSERT_RESULT(MappingExists(res, 0x7f020005, Res_value::TYPE_REFERENCE, 0x7f010002,
	false /* rewrite */)); // string/policy_odm
	ASSERT_RESULT(MappingExists(res, 0x7f020006, Res_value::TYPE_REFERENCE, 0x7f010003,
	false /* rewrite */)); // string/policy_oem
	ASSERT_RESULT(MappingExists(res, 0x7f020007, Res_value::TYPE_REFERENCE, 0x7f010004,
	false /* rewrite */)); // string/policy_product
	ASSERT_RESULT(MappingExists(res, 0x7f020008, Res_value::TYPE_REFERENCE, 0x7f010005,
	false /* rewrite */)); // string/policy_public
	ASSERT_RESULT(MappingExists(res, 0x7f020009, Res_value::TYPE_REFERENCE, 0x7f010006,
	false /* rewrite */)); // string/policy_signature
	ASSERT_RESULT(MappingExists(res, 0x7f02000a, Res_value::TYPE_REFERENCE, 0x7f010007,
	false /* rewrite */)); // string/policy_system
	ASSERT_RESULT(MappingExists(res, 0x7f02000b, Res_value::TYPE_REFERENCE, 0x7f010008,
	false /* rewrite */)); // string/policy_system_vendor
	};

	CheckEntries(PolicyFlags::POLICY_SIGNATURE);
	CheckEntries(PolicyFlags::POLICY_PRODUCT_PARTITION);
	CheckEntries(PolicyFlags::POLICY_SYSTEM_PARTITION);
	CheckEntries(PolicyFlags::POLICY_VENDOR_PARTITION);
	CheckEntries(PolicyFlags::POLICY_ODM_PARTITION);
	CheckEntries(PolicyFlags::POLICY_OEM_PARTITION);
	}

	} // namespace android::idmap2