Merge "Merge Android R"

1 files changed, 352 insertions, 0 deletions

diff --git a/cmds/idmap2/tests/ResourceMappingTests.cpp b/cmds/idmap2/tests/ResourceMappingTests.cpp
new file mode 100644
index 000000000000..de039f440e33
--- /dev/null
+++ b/cmds/idmap2/tests/ResourceMappingTests.cpp
@@ -0,0 +1,352 @@
+/*
+ * 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 "R.h"
+#include "TestHelpers.h"
+#include "androidfw/ResourceTypes.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;
+
+using PolicyFlags = android::ResTable_overlayable_policy_header::PolicyFlags;
+
+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::PUBLIC,
+                                          /* enforce_overlayable */ false);
+
+  ASSERT_TRUE(resources) << resources.GetErrorMessage();
+  auto& res = *resources;
+  ASSERT_EQ(res.GetTargetToOverlayMap().size(), 4U);
+  ASSERT_RESULT(MappingExists(res, R::target::integer::int1, Res_value::TYPE_REFERENCE,
+                              R::overlay::integer::int1, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str1, Res_value::TYPE_REFERENCE,
+                              R::overlay::string::str1, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str3, Res_value::TYPE_REFERENCE,
+                              R::overlay::string::str3, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str4, Res_value::TYPE_REFERENCE,
+                              R::overlay::string::str4, false /* rewrite */));
+}
+
+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::PUBLIC,
+                                          /* enforce_overlayable */ false);
+
+  ASSERT_TRUE(resources) << resources.GetErrorMessage();
+  auto& res = *resources;
+  ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
+  ASSERT_RESULT(MappingExists(res, R::target::string::str1, Res_value::TYPE_DYNAMIC_REFERENCE,
+                              R::overlay::string::str4, true /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str3, Res_value::TYPE_DYNAMIC_REFERENCE,
+                              R::overlay::string::str1, true /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str4, Res_value::TYPE_DYNAMIC_REFERENCE,
+                              R::overlay::string::str3, true /* rewrite */));
+}
+
+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::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, R::target::string::str1, Res_value::TYPE_REFERENCE, 0x0104000a,
+                              false /* rewrite */));  // -> android:string/ok
+  ASSERT_RESULT(MappingExists(res, R::target::string::str3, Res_value::TYPE_DYNAMIC_REFERENCE,
+                              0x7f020001, true /* rewrite */));
+}
+
+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::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, R::target::string::str1, Res_value::TYPE_STRING,
+                              overlay_string_pool_size + 0U,
+                              false /* rewrite */));  // -> "Hello World"
+  ASSERT_RESULT(MappingExists(res, R::target::integer::int1, Res_value::TYPE_INT_DEC, 73U,
+                              false /* rewrite */));  // -> 73
+}
+
+TEST(ResourceMappingTests, CreateIdmapFromApkAssetsPolicySystemPublic) {
+  auto resources =
+      TestGetResourceMapping("/target/target.apk", "/system-overlay/system-overlay.apk",
+                             PolicyFlags::SYSTEM_PARTITION | PolicyFlags::PUBLIC,
+                             /* enforce_overlayable */ true);
+
+  ASSERT_TRUE(resources) << resources.GetErrorMessage();
+  auto& res = *resources;
+  ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_public, Res_value::TYPE_REFERENCE,
+                              R::system_overlay::string::policy_public, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_system, Res_value::TYPE_REFERENCE,
+                              R::system_overlay::string::policy_system, false /* rewrite */));
+  ASSERT_RESULT(
+      MappingExists(res, R::target::string::policy_system_vendor, Res_value::TYPE_REFERENCE,
+                    R::system_overlay::string::policy_system_vendor, false /* rewrite */));
+}
+
+// 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::SYSTEM_PARTITION | PolicyFlags::PUBLIC,
+                                          /* enforce_overlayable */ true);
+
+  ASSERT_TRUE(resources) << resources.GetErrorMessage();
+  auto& res = *resources;
+  ASSERT_EQ(res.GetTargetToOverlayMap().size(), 3U);
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_public, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_public,
+                              false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_system, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_system,
+                              false /* rewrite */));
+  ASSERT_RESULT(
+      MappingExists(res, R::target::string::policy_system_vendor, Res_value::TYPE_REFERENCE,
+                    R::system_overlay_invalid::string::policy_system_vendor, false /* rewrite */));
+}
+
+// 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::SYSTEM_PARTITION | PolicyFlags::PUBLIC,
+                                          /* enforce_overlayable */ false);
+
+  ASSERT_TRUE(resources) << resources.GetErrorMessage();
+  auto& res = *resources;
+  ASSERT_EQ(res.GetTargetToOverlayMap().size(), 10U);
+  ASSERT_RESULT(MappingExists(res, R::target::string::not_overlayable, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::not_overlayable,
+                              false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::other, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::other, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_actor, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_actor,
+                              false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_odm, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_odm, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_oem, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_oem, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_product, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_product,
+                              false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_public, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_public,
+                              false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_signature, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_signature,
+                              false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::policy_system, Res_value::TYPE_REFERENCE,
+                              R::system_overlay_invalid::string::policy_system,
+                              false /* rewrite */));
+  ASSERT_RESULT(
+      MappingExists(res, R::target::string::policy_system_vendor, Res_value::TYPE_REFERENCE,
+                    R::system_overlay_invalid::string::policy_system_vendor, false /* rewrite */));
+}
+
+// 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::PUBLIC,
+                                          /* enforce_overlayable */ false);
+
+  ASSERT_TRUE(resources) << resources.GetErrorMessage();
+  auto& res = *resources;
+  ASSERT_EQ(res.GetTargetToOverlayMap().size(), 4U);
+  ASSERT_RESULT(MappingExists(res, R::target::integer::int1, Res_value::TYPE_REFERENCE,
+                              R::overlay::integer::int1, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str1, Res_value::TYPE_REFERENCE,
+                              R::overlay::string::str1, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str3, Res_value::TYPE_REFERENCE,
+                              R::overlay::string::str3, false /* rewrite */));
+  ASSERT_RESULT(MappingExists(res, R::target::string::str4, Res_value::TYPE_REFERENCE,
+                              R::overlay::string::str4, false /* rewrite */));
+}
+
+// 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::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(), 10U);
+    ASSERT_RESULT(MappingExists(res, R::target::string::not_overlayable, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::not_overlayable,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::other, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::other, false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_actor, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_actor,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_odm, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_odm,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_oem, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_oem,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_product, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_product,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_public, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_public,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_signature, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_signature,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(res, R::target::string::policy_system, Res_value::TYPE_REFERENCE,
+                                R::system_overlay_invalid::string::policy_system,
+                                false /* rewrite */));
+    ASSERT_RESULT(MappingExists(
+        res, R::target::string::policy_system_vendor, Res_value::TYPE_REFERENCE,
+        R::system_overlay_invalid::string::policy_system_vendor, false /* rewrite */));
+  };
+
+  CheckEntries(PolicyFlags::SIGNATURE);
+  CheckEntries(PolicyFlags::PRODUCT_PARTITION);
+  CheckEntries(PolicyFlags::SYSTEM_PARTITION);
+  CheckEntries(PolicyFlags::VENDOR_PARTITION);
+  CheckEntries(PolicyFlags::ODM_PARTITION);
+  CheckEntries(PolicyFlags::OEM_PARTITION);
+}
+
+}  // namespace android::idmap2