tools/aapt2/link/ManifestFixer.cpp - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2015 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 "link/ManifestFixer.h"

 #include <unordered_set>

 #include "android-base/logging.h"

 #include "ResourceUtils.h"
 #include "util/Util.h"
 #include "xml/XmlActionExecutor.h"
 #include "xml/XmlDom.h"

 using android::StringPiece;

 namespace aapt {

 // This is how PackageManager builds class names from AndroidManifest.xml entries.
 static bool NameIsJavaClassName(xml::Element* el, xml::Attribute* attr,
                                 SourcePathDiagnostics* diag) {
   // We allow unqualified class names (ie: .HelloActivity)
   // Since we don't know the package name, we can just make a fake one here and
   // the test will be identical as long as the real package name is valid too.
   Maybe<std::string> fully_qualified_class_name =
       util::GetFullyQualifiedClassName("a", attr->value);

   StringPiece qualified_class_name = fully_qualified_class_name
                                          ? fully_qualified_class_name.value()
                                          : attr->value;

   if (!util::IsJavaClassName(qualified_class_name)) {
     diag->Error(DiagMessage(el->line_number)
                 << "attribute 'android:name' in <" << el->name
                 << "> tag must be a valid Java class name");
     return false;
   }
   return true;
 }

 static bool OptionalNameIsJavaClassName(xml::Element* el, SourcePathDiagnostics* diag) {
   if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
     return NameIsJavaClassName(el, attr, diag);
   }
   return true;
 }

 static bool RequiredNameIsJavaClassName(xml::Element* el, SourcePathDiagnostics* diag) {
   if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
     return NameIsJavaClassName(el, attr, diag);
   }
   diag->Error(DiagMessage(el->line_number)
               << "<" << el->name << "> is missing attribute 'android:name'");
   return false;
 }

 static bool RequiredNameIsJavaPackage(xml::Element* el, SourcePathDiagnostics* diag) {
   if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
     return util::IsJavaPackageName(attr->value);
   }
   diag->Error(DiagMessage(el->line_number)
               << "<" << el->name << "> is missing attribute 'android:name'");
   return false;
 }

 static xml::XmlNodeAction::ActionFuncWithDiag RequiredAndroidAttribute(const std::string& attr) {
   return [=](xml::Element* el, SourcePathDiagnostics* diag) -> bool {
     if (el->FindAttribute(xml::kSchemaAndroid, attr) == nullptr) {
       diag->Error(DiagMessage(el->line_number)
                   << "<" << el->name << "> is missing required attribute 'android:" << attr << "'");
       return false;
     }
     return true;
   };
 }

 static bool AutoGenerateIsFeatureSplit(xml::Element* el, SourcePathDiagnostics* diag) {
   constexpr const char* kFeatureSplit = "featureSplit";
   constexpr const char* kIsFeatureSplit = "isFeatureSplit";

   xml::Attribute* attr = el->FindAttribute({}, kFeatureSplit);
   if (attr != nullptr) {
     // Rewrite the featureSplit attribute to be "split". This is what the
     // platform recognizes.
     attr->name = "split";

     // Now inject the android:isFeatureSplit="true" attribute.
     xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, kIsFeatureSplit);
     if (attr != nullptr) {
       if (!ResourceUtils::ParseBool(attr->value).value_or_default(false)) {
         // The isFeatureSplit attribute is false, which conflicts with the use
         // of "featureSplit".
         diag->Error(DiagMessage(el->line_number)
                     << "attribute 'featureSplit' used in <manifest> but 'android:isFeatureSplit' "
                        "is not 'true'");
         return false;
       }

       // The attribute is already there and set to true, nothing to do.
     } else {
       el->attributes.push_back(xml::Attribute{xml::kSchemaAndroid, kIsFeatureSplit, "true"});
     }
   }
   return true;
 }

 static bool VerifyManifest(xml::Element* el, SourcePathDiagnostics* diag) {
   xml::Attribute* attr = el->FindAttribute({}, "package");
   if (!attr) {
     diag->Error(DiagMessage(el->line_number)
                 << "<manifest> tag is missing 'package' attribute");
     return false;
   } else if (ResourceUtils::IsReference(attr->value)) {
     diag->Error(DiagMessage(el->line_number)
                 << "attribute 'package' in <manifest> tag must not be a reference");
     return false;
   } else if (!util::IsJavaPackageName(attr->value)) {
     diag->Error(DiagMessage(el->line_number)
                 << "attribute 'package' in <manifest> tag is not a valid Java package name: '"
                 << attr->value << "'");
     return false;
   }

   attr = el->FindAttribute({}, "split");
   if (attr) {
     if (!util::IsJavaPackageName(attr->value)) {
       diag->Error(DiagMessage(el->line_number) << "attribute 'split' in <manifest> tag is not a "
                                                   "valid split name");
       return false;
     }
   }
   return true;
 }

 // The coreApp attribute in <manifest> is not a regular AAPT attribute, so type
 // checking on it is manual.
 static bool FixCoreAppAttribute(xml::Element* el, SourcePathDiagnostics* diag) {
   if (xml::Attribute* attr = el->FindAttribute("", "coreApp")) {
     std::unique_ptr<BinaryPrimitive> result = ResourceUtils::TryParseBool(attr->value);
     if (!result) {
       diag->Error(DiagMessage(el->line_number) << "attribute coreApp must be a boolean");
       return false;
     }
     attr->compiled_value = std::move(result);
   }
   return true;
 }

 // Checks that <uses-feature> has android:glEsVersion or android:name, not both (or neither).
 static bool VerifyUsesFeature(xml::Element* el, SourcePathDiagnostics* diag) {
   bool has_name = false;
   if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
     if (attr->value.empty()) {
       diag->Error(DiagMessage(el->line_number)
                   << "android:name in <uses-feature> must not be empty");
       return false;
     }
     has_name = true;
   }

   bool has_gl_es_version = false;
   if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "glEsVersion")) {
     if (has_name) {
       diag->Error(DiagMessage(el->line_number)
                   << "cannot define both android:name and android:glEsVersion in <uses-feature>");
       return false;
     }
     has_gl_es_version = true;
   }

   if (!has_name && !has_gl_es_version) {
     diag->Error(DiagMessage(el->line_number)
                 << "<uses-feature> must have either android:name or android:glEsVersion attribute");
     return false;
   }
   return true;
 }

 bool ManifestFixer::BuildRules(xml::XmlActionExecutor* executor,
                                IDiagnostics* diag) {
   // First verify some options.
   if (options_.rename_manifest_package) {
     if (!util::IsJavaPackageName(options_.rename_manifest_package.value())) {
       diag->Error(DiagMessage() << "invalid manifest package override '"
                                 << options_.rename_manifest_package.value()
                                 << "'");
       return false;
     }
   }

   if (options_.rename_instrumentation_target_package) {
     if (!util::IsJavaPackageName(options_.rename_instrumentation_target_package.value())) {
       diag->Error(DiagMessage()
                   << "invalid instrumentation target package override '"
                   << options_.rename_instrumentation_target_package.value()
                   << "'");
       return false;
     }
   }

   // Common <intent-filter> actions.
   xml::XmlNodeAction intent_filter_action;
   intent_filter_action["action"];
   intent_filter_action["category"];
   intent_filter_action["data"];

   // Common <meta-data> actions.
   xml::XmlNodeAction meta_data_action;

   // Common <uses-feature> actions.
   xml::XmlNodeAction uses_feature_action;
   uses_feature_action.Action(VerifyUsesFeature);

   // Common component actions.
   xml::XmlNodeAction component_action;
   component_action.Action(RequiredNameIsJavaClassName);
   component_action["intent-filter"] = intent_filter_action;
   component_action["meta-data"] = meta_data_action;

   // Manifest actions.
   xml::XmlNodeAction& manifest_action = (*executor)["manifest"];
   manifest_action.Action(AutoGenerateIsFeatureSplit);
   manifest_action.Action(VerifyManifest);
   manifest_action.Action(FixCoreAppAttribute);
   manifest_action.Action([&](xml::Element* el) -> bool {
     if (options_.version_name_default) {
       if (el->FindAttribute(xml::kSchemaAndroid, "versionName") == nullptr) {
         el->attributes.push_back(
             xml::Attribute{xml::kSchemaAndroid, "versionName",
                            options_.version_name_default.value()});
       }
     }

     if (options_.version_code_default) {
       if (el->FindAttribute(xml::kSchemaAndroid, "versionCode") == nullptr) {
         el->attributes.push_back(
             xml::Attribute{xml::kSchemaAndroid, "versionCode",
                            options_.version_code_default.value()});
       }
     }
     return true;
   });

   // Meta tags.
   manifest_action["eat-comment"];

   // Uses-sdk actions.
   manifest_action["uses-sdk"].Action([&](xml::Element* el) -> bool {
     if (options_.min_sdk_version_default &&
         el->FindAttribute(xml::kSchemaAndroid, "minSdkVersion") == nullptr) {
       // There was no minSdkVersion defined and we have a default to assign.
       el->attributes.push_back(
           xml::Attribute{xml::kSchemaAndroid, "minSdkVersion",
                          options_.min_sdk_version_default.value()});
     }

     if (options_.target_sdk_version_default &&
         el->FindAttribute(xml::kSchemaAndroid, "targetSdkVersion") == nullptr) {
       // There was no targetSdkVersion defined and we have a default to assign.
       el->attributes.push_back(
           xml::Attribute{xml::kSchemaAndroid, "targetSdkVersion",
                          options_.target_sdk_version_default.value()});
     }
     return true;
   });

   // Instrumentation actions.
   manifest_action["instrumentation"].Action(RequiredNameIsJavaClassName);
   manifest_action["instrumentation"].Action([&](xml::Element* el) -> bool {
     if (!options_.rename_instrumentation_target_package) {
       return true;
     }

     if (xml::Attribute* attr =
             el->FindAttribute(xml::kSchemaAndroid, "targetPackage")) {
       attr->value = options_.rename_instrumentation_target_package.value();
     }
     return true;
   });
   manifest_action["instrumentation"]["meta-data"] = meta_data_action;

   manifest_action["original-package"];
   manifest_action["protected-broadcast"];
   manifest_action["uses-permission"];
   manifest_action["permission"];
   manifest_action["permission-tree"];
   manifest_action["permission-group"];
   manifest_action["uses-configuration"];
   manifest_action["supports-screens"];
   manifest_action["uses-feature"] = uses_feature_action;
   manifest_action["feature-group"]["uses-feature"] = uses_feature_action;
   manifest_action["compatible-screens"];
   manifest_action["compatible-screens"]["screen"];
   manifest_action["supports-gl-texture"];
   manifest_action["meta-data"] = meta_data_action;
   manifest_action["uses-split"].Action(RequiredNameIsJavaPackage);

   // Application actions.
   xml::XmlNodeAction& application_action = manifest_action["application"];
   application_action.Action(OptionalNameIsJavaClassName);

   application_action["uses-library"].Action(RequiredNameIsJavaPackage);
   application_action["library"].Action(RequiredNameIsJavaPackage);

   xml::XmlNodeAction& static_library_action = application_action["static-library"];
   static_library_action.Action(RequiredNameIsJavaPackage);
   static_library_action.Action(RequiredAndroidAttribute("version"));

   xml::XmlNodeAction& uses_static_library_action = application_action["uses-static-library"];
   uses_static_library_action.Action(RequiredNameIsJavaPackage);
   uses_static_library_action.Action(RequiredAndroidAttribute("version"));
   uses_static_library_action.Action(RequiredAndroidAttribute("certDigest"));

   application_action["meta-data"] = meta_data_action;
   application_action["activity"] = component_action;
   application_action["activity-alias"] = component_action;
   application_action["service"] = component_action;
   application_action["receiver"] = component_action;

   // Provider actions.
   application_action["provider"] = component_action;
   application_action["provider"]["grant-uri-permissions"];
   application_action["provider"]["path-permissions"];

   return true;
 }

 class FullyQualifiedClassNameVisitor : public xml::Visitor {
  public:
   using xml::Visitor::Visit;

   explicit FullyQualifiedClassNameVisitor(const StringPiece& package) : package_(package) {}

   void Visit(xml::Element* el) override {
     for (xml::Attribute& attr : el->attributes) {
       if (attr.namespace_uri == xml::kSchemaAndroid &&
           class_attributes_.find(attr.name) != class_attributes_.end()) {
         if (Maybe<std::string> new_value = util::GetFullyQualifiedClassName(package_, attr.value)) {
           attr.value = std::move(new_value.value());
         }
       }
     }

     // Super implementation to iterate over the children.
     xml::Visitor::Visit(el);
   }

  private:
   StringPiece package_;
   std::unordered_set<StringPiece> class_attributes_ = {"name"};
 };

 static bool RenameManifestPackage(const StringPiece& package_override, xml::Element* manifest_el) {
   xml::Attribute* attr = manifest_el->FindAttribute({}, "package");

   // We've already verified that the manifest element is present, with a package
   // name specified.
   CHECK(attr != nullptr);

   std::string original_package = std::move(attr->value);
   attr->value = package_override.to_string();

   FullyQualifiedClassNameVisitor visitor(original_package);
   manifest_el->Accept(&visitor);
   return true;
 }

 bool ManifestFixer::Consume(IAaptContext* context, xml::XmlResource* doc) {
   xml::Element* root = xml::FindRootElement(doc->root.get());
   if (!root || !root->namespace_uri.empty() || root->name != "manifest") {
     context->GetDiagnostics()->Error(DiagMessage(doc->file.source)
                                      << "root tag must be <manifest>");
     return false;
   }

   if ((options_.min_sdk_version_default || options_.target_sdk_version_default) &&
       root->FindChild({}, "uses-sdk") == nullptr) {
     // Auto insert a <uses-sdk> element. This must be inserted before the
     // <application> tag. The device runtime PackageParser will make SDK version
     // decisions while parsing <application>.
     std::unique_ptr<xml::Element> uses_sdk = util::make_unique<xml::Element>();
     uses_sdk->name = "uses-sdk";
     root->InsertChild(0, std::move(uses_sdk));
   }

   xml::XmlActionExecutor executor;
   if (!BuildRules(&executor, context->GetDiagnostics())) {
     return false;
   }

   if (!executor.Execute(xml::XmlActionExecutorPolicy::kWhitelist, context->GetDiagnostics(), doc)) {
     return false;
   }

   if (options_.rename_manifest_package) {
     // Rename manifest package outside of the XmlActionExecutor.
     // We need to extract the old package name and FullyQualify all class
     // names.
     if (!RenameManifestPackage(options_.rename_manifest_package.value(), root)) {
       return false;
     }
   }
   return true;
 }

 }  // namespace aapt
	/*
	* Copyright (C) 2015 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 "link/ManifestFixer.h"

	#include <unordered_set>

	#include "android-base/logging.h"

	#include "ResourceUtils.h"
	#include "util/Util.h"
	#include "xml/XmlActionExecutor.h"
	#include "xml/XmlDom.h"

	using android::StringPiece;

	namespace aapt {

	// This is how PackageManager builds class names from AndroidManifest.xml entries.
	static bool NameIsJavaClassName(xml::Element* el, xml::Attribute* attr,
	SourcePathDiagnostics* diag) {
	// We allow unqualified class names (ie: .HelloActivity)
	// Since we don't know the package name, we can just make a fake one here and
	// the test will be identical as long as the real package name is valid too.
	Maybe<std::string> fully_qualified_class_name =
	util::GetFullyQualifiedClassName("a", attr->value);

	StringPiece qualified_class_name = fully_qualified_class_name
	? fully_qualified_class_name.value()
	: attr->value;

	if (!util::IsJavaClassName(qualified_class_name)) {
	diag->Error(DiagMessage(el->line_number)
	<< "attribute 'android:name' in <" << el->name
	<< "> tag must be a valid Java class name");
	return false;
	}
	return true;
	}

	static bool OptionalNameIsJavaClassName(xml::Element* el, SourcePathDiagnostics* diag) {
	if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
	return NameIsJavaClassName(el, attr, diag);
	}
	return true;
	}

	static bool RequiredNameIsJavaClassName(xml::Element* el, SourcePathDiagnostics* diag) {
	if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
	return NameIsJavaClassName(el, attr, diag);
	}
	diag->Error(DiagMessage(el->line_number)
	<< "<" << el->name << "> is missing attribute 'android:name'");
	return false;
	}

	static bool RequiredNameIsJavaPackage(xml::Element* el, SourcePathDiagnostics* diag) {
	if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
	return util::IsJavaPackageName(attr->value);
	}
	diag->Error(DiagMessage(el->line_number)
	<< "<" << el->name << "> is missing attribute 'android:name'");
	return false;
	}

	static xml::XmlNodeAction::ActionFuncWithDiag RequiredAndroidAttribute(const std::string& attr) {
	return [=](xml::Element* el, SourcePathDiagnostics* diag) -> bool {
	if (el->FindAttribute(xml::kSchemaAndroid, attr) == nullptr) {
	diag->Error(DiagMessage(el->line_number)
	<< "<" << el->name << "> is missing required attribute 'android:" << attr << "'");
	return false;
	}
	return true;
	};
	}

	static bool AutoGenerateIsFeatureSplit(xml::Element* el, SourcePathDiagnostics* diag) {
	constexpr const char* kFeatureSplit = "featureSplit";
	constexpr const char* kIsFeatureSplit = "isFeatureSplit";

	xml::Attribute* attr = el->FindAttribute({}, kFeatureSplit);
	if (attr != nullptr) {
	// Rewrite the featureSplit attribute to be "split". This is what the
	// platform recognizes.
	attr->name = "split";

	// Now inject the android:isFeatureSplit="true" attribute.
	xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, kIsFeatureSplit);
	if (attr != nullptr) {
	if (!ResourceUtils::ParseBool(attr->value).value_or_default(false)) {
	// The isFeatureSplit attribute is false, which conflicts with the use
	// of "featureSplit".
	diag->Error(DiagMessage(el->line_number)
	<< "attribute 'featureSplit' used in <manifest> but 'android:isFeatureSplit' "
	"is not 'true'");
	return false;
	}

	// The attribute is already there and set to true, nothing to do.
	} else {
	el->attributes.push_back(xml::Attribute{xml::kSchemaAndroid, kIsFeatureSplit, "true"});
	}
	}
	return true;
	}

	static bool VerifyManifest(xml::Element* el, SourcePathDiagnostics* diag) {
	xml::Attribute* attr = el->FindAttribute({}, "package");
	if (!attr) {
	diag->Error(DiagMessage(el->line_number)
	<< "<manifest> tag is missing 'package' attribute");
	return false;
	} else if (ResourceUtils::IsReference(attr->value)) {
	diag->Error(DiagMessage(el->line_number)
	<< "attribute 'package' in <manifest> tag must not be a reference");
	return false;
	} else if (!util::IsJavaPackageName(attr->value)) {
	diag->Error(DiagMessage(el->line_number)
	<< "attribute 'package' in <manifest> tag is not a valid Java package name: '"
	<< attr->value << "'");
	return false;
	}

	attr = el->FindAttribute({}, "split");
	if (attr) {
	if (!util::IsJavaPackageName(attr->value)) {
	diag->Error(DiagMessage(el->line_number) << "attribute 'split' in <manifest> tag is not a "
	"valid split name");
	return false;
	}
	}
	return true;
	}

	// The coreApp attribute in <manifest> is not a regular AAPT attribute, so type
	// checking on it is manual.
	static bool FixCoreAppAttribute(xml::Element* el, SourcePathDiagnostics* diag) {
	if (xml::Attribute* attr = el->FindAttribute("", "coreApp")) {
	std::unique_ptr<BinaryPrimitive> result = ResourceUtils::TryParseBool(attr->value);
	if (!result) {
	diag->Error(DiagMessage(el->line_number) << "attribute coreApp must be a boolean");
	return false;
	}
	attr->compiled_value = std::move(result);
	}
	return true;
	}

	// Checks that <uses-feature> has android:glEsVersion or android:name, not both (or neither).
	static bool VerifyUsesFeature(xml::Element* el, SourcePathDiagnostics* diag) {
	bool has_name = false;
	if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name")) {
	if (attr->value.empty()) {
	diag->Error(DiagMessage(el->line_number)
	<< "android:name in <uses-feature> must not be empty");
	return false;
	}
	has_name = true;
	}

	bool has_gl_es_version = false;
	if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "glEsVersion")) {
	if (has_name) {
	diag->Error(DiagMessage(el->line_number)
	<< "cannot define both android:name and android:glEsVersion in <uses-feature>");
	return false;
	}
	has_gl_es_version = true;
	}

	if (!has_name && !has_gl_es_version) {
	diag->Error(DiagMessage(el->line_number)
	<< "<uses-feature> must have either android:name or android:glEsVersion attribute");
	return false;
	}
	return true;
	}

	bool ManifestFixer::BuildRules(xml::XmlActionExecutor* executor,
	IDiagnostics* diag) {
	// First verify some options.
	if (options_.rename_manifest_package) {
	if (!util::IsJavaPackageName(options_.rename_manifest_package.value())) {
	diag->Error(DiagMessage() << "invalid manifest package override '"
	<< options_.rename_manifest_package.value()
	<< "'");
	return false;
	}
	}

	if (options_.rename_instrumentation_target_package) {
	if (!util::IsJavaPackageName(options_.rename_instrumentation_target_package.value())) {
	diag->Error(DiagMessage()
	<< "invalid instrumentation target package override '"
	<< options_.rename_instrumentation_target_package.value()
	<< "'");
	return false;
	}
	}

	// Common <intent-filter> actions.
	xml::XmlNodeAction intent_filter_action;
	intent_filter_action["action"];
	intent_filter_action["category"];
	intent_filter_action["data"];

	// Common <meta-data> actions.
	xml::XmlNodeAction meta_data_action;

	// Common <uses-feature> actions.
	xml::XmlNodeAction uses_feature_action;
	uses_feature_action.Action(VerifyUsesFeature);

	// Common component actions.
	xml::XmlNodeAction component_action;
	component_action.Action(RequiredNameIsJavaClassName);
	component_action["intent-filter"] = intent_filter_action;
	component_action["meta-data"] = meta_data_action;

	// Manifest actions.
	xml::XmlNodeAction& manifest_action = (*executor)["manifest"];
	manifest_action.Action(AutoGenerateIsFeatureSplit);
	manifest_action.Action(VerifyManifest);
	manifest_action.Action(FixCoreAppAttribute);
	manifest_action.Action([&](xml::Element* el) -> bool {
	if (options_.version_name_default) {
	if (el->FindAttribute(xml::kSchemaAndroid, "versionName") == nullptr) {
	el->attributes.push_back(
	xml::Attribute{xml::kSchemaAndroid, "versionName",
	options_.version_name_default.value()});
	}
	}

	if (options_.version_code_default) {
	if (el->FindAttribute(xml::kSchemaAndroid, "versionCode") == nullptr) {
	el->attributes.push_back(
	xml::Attribute{xml::kSchemaAndroid, "versionCode",
	options_.version_code_default.value()});
	}
	}
	return true;
	});

	// Meta tags.
	manifest_action["eat-comment"];

	// Uses-sdk actions.
	manifest_action["uses-sdk"].Action([&](xml::Element* el) -> bool {
	if (options_.min_sdk_version_default &&
	el->FindAttribute(xml::kSchemaAndroid, "minSdkVersion") == nullptr) {
	// There was no minSdkVersion defined and we have a default to assign.
	el->attributes.push_back(
	xml::Attribute{xml::kSchemaAndroid, "minSdkVersion",
	options_.min_sdk_version_default.value()});
	}

	if (options_.target_sdk_version_default &&
	el->FindAttribute(xml::kSchemaAndroid, "targetSdkVersion") == nullptr) {
	// There was no targetSdkVersion defined and we have a default to assign.
	el->attributes.push_back(
	xml::Attribute{xml::kSchemaAndroid, "targetSdkVersion",
	options_.target_sdk_version_default.value()});
	}
	return true;
	});

	// Instrumentation actions.
	manifest_action["instrumentation"].Action(RequiredNameIsJavaClassName);
	manifest_action["instrumentation"].Action([&](xml::Element* el) -> bool {
	if (!options_.rename_instrumentation_target_package) {
	return true;
	}

	if (xml::Attribute* attr =
	el->FindAttribute(xml::kSchemaAndroid, "targetPackage")) {
	attr->value = options_.rename_instrumentation_target_package.value();
	}
	return true;
	});
	manifest_action["instrumentation"]["meta-data"] = meta_data_action;

	manifest_action["original-package"];
	manifest_action["protected-broadcast"];
	manifest_action["uses-permission"];
	manifest_action["permission"];
	manifest_action["permission-tree"];
	manifest_action["permission-group"];
	manifest_action["uses-configuration"];
	manifest_action["supports-screens"];
	manifest_action["uses-feature"] = uses_feature_action;
	manifest_action["feature-group"]["uses-feature"] = uses_feature_action;
	manifest_action["compatible-screens"];
	manifest_action["compatible-screens"]["screen"];
	manifest_action["supports-gl-texture"];
	manifest_action["meta-data"] = meta_data_action;
	manifest_action["uses-split"].Action(RequiredNameIsJavaPackage);

	// Application actions.
	xml::XmlNodeAction& application_action = manifest_action["application"];
	application_action.Action(OptionalNameIsJavaClassName);

	application_action["uses-library"].Action(RequiredNameIsJavaPackage);
	application_action["library"].Action(RequiredNameIsJavaPackage);

	xml::XmlNodeAction& static_library_action = application_action["static-library"];
	static_library_action.Action(RequiredNameIsJavaPackage);
	static_library_action.Action(RequiredAndroidAttribute("version"));

	xml::XmlNodeAction& uses_static_library_action = application_action["uses-static-library"];
	uses_static_library_action.Action(RequiredNameIsJavaPackage);
	uses_static_library_action.Action(RequiredAndroidAttribute("version"));
	uses_static_library_action.Action(RequiredAndroidAttribute("certDigest"));

	application_action["meta-data"] = meta_data_action;
	application_action["activity"] = component_action;
	application_action["activity-alias"] = component_action;
	application_action["service"] = component_action;
	application_action["receiver"] = component_action;

	// Provider actions.
	application_action["provider"] = component_action;
	application_action["provider"]["grant-uri-permissions"];
	application_action["provider"]["path-permissions"];

	return true;
	}

	class FullyQualifiedClassNameVisitor : public xml::Visitor {
	public:
	using xml::Visitor::Visit;

	explicit FullyQualifiedClassNameVisitor(const StringPiece& package) : package_(package) {}

	void Visit(xml::Element* el) override {
	for (xml::Attribute& attr : el->attributes) {
	if (attr.namespace_uri == xml::kSchemaAndroid &&
	class_attributes_.find(attr.name) != class_attributes_.end()) {
	if (Maybe<std::string> new_value = util::GetFullyQualifiedClassName(package_, attr.value)) {
	attr.value = std::move(new_value.value());
	}
	}
	}

	// Super implementation to iterate over the children.
	xml::Visitor::Visit(el);
	}

	private:
	StringPiece package_;
	std::unordered_set<StringPiece> class_attributes_ = {"name"};
	};

	static bool RenameManifestPackage(const StringPiece& package_override, xml::Element* manifest_el) {
	xml::Attribute* attr = manifest_el->FindAttribute({}, "package");

	// We've already verified that the manifest element is present, with a package
	// name specified.
	CHECK(attr != nullptr);

	std::string original_package = std::move(attr->value);
	attr->value = package_override.to_string();

	FullyQualifiedClassNameVisitor visitor(original_package);
	manifest_el->Accept(&visitor);
	return true;
	}

	bool ManifestFixer::Consume(IAaptContext* context, xml::XmlResource* doc) {
	xml::Element* root = xml::FindRootElement(doc->root.get());
	if (!root \|\| !root->namespace_uri.empty() \|\| root->name != "manifest") {
	context->GetDiagnostics()->Error(DiagMessage(doc->file.source)
	<< "root tag must be <manifest>");
	return false;
	}

	if ((options_.min_sdk_version_default \|\| options_.target_sdk_version_default) &&
	root->FindChild({}, "uses-sdk") == nullptr) {
	// Auto insert a <uses-sdk> element. This must be inserted before the
	// <application> tag. The device runtime PackageParser will make SDK version
	// decisions while parsing <application>.
	std::unique_ptr<xml::Element> uses_sdk = util::make_unique<xml::Element>();
	uses_sdk->name = "uses-sdk";
	root->InsertChild(0, std::move(uses_sdk));
	}

	xml::XmlActionExecutor executor;
	if (!BuildRules(&executor, context->GetDiagnostics())) {
	return false;
	}

	if (!executor.Execute(xml::XmlActionExecutorPolicy::kWhitelist, context->GetDiagnostics(), doc)) {
	return false;
	}

	if (options_.rename_manifest_package) {
	// Rename manifest package outside of the XmlActionExecutor.
	// We need to extract the old package name and FullyQualify all class
	// names.
	if (!RenameManifestPackage(options_.rename_manifest_package.value(), root)) {
	return false;
	}
	}
	return true;
	}

	} // namespace aapt