| /* |
| * Copyright (C) 2016 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 "LoadedApk.h" |
| |
| #include "ResourceValues.h" |
| #include "ValueVisitor.h" |
| #include "format/Archive.h" |
| #include "format/binary/TableFlattener.h" |
| #include "format/binary/XmlFlattener.h" |
| #include "format/proto/ProtoDeserialize.h" |
| #include "format/proto/ProtoSerialize.h" |
| #include "io/BigBufferStream.h" |
| #include "io/Util.h" |
| #include "xml/XmlDom.h" |
| |
| using ::aapt::io::IFile; |
| using ::aapt::io::IFileCollection; |
| using ::aapt::xml::XmlResource; |
| using ::android::StringPiece; |
| using ::std::unique_ptr; |
| |
| namespace aapt { |
| |
| static ApkFormat DetermineApkFormat(io::IFileCollection* apk) { |
| if (apk->FindFile(kApkResourceTablePath) != nullptr) { |
| return ApkFormat::kBinary; |
| } else if (apk->FindFile(kProtoResourceTablePath) != nullptr) { |
| return ApkFormat::kProto; |
| } else { |
| // If the resource table is not present, attempt to read the manifest. |
| io::IFile* manifest_file = apk->FindFile(kAndroidManifestPath); |
| if (manifest_file == nullptr) { |
| return ApkFormat::kUnknown; |
| } |
| |
| // First try in proto format. |
| std::unique_ptr<io::InputStream> manifest_in = manifest_file->OpenInputStream(); |
| if (manifest_in != nullptr) { |
| pb::XmlNode pb_node; |
| io::ProtoInputStreamReader proto_reader(manifest_in.get()); |
| if (proto_reader.ReadMessage(&pb_node)) { |
| return ApkFormat::kProto; |
| } |
| } |
| |
| // If it didn't work, try in binary format. |
| std::unique_ptr<io::IData> manifest_data = manifest_file->OpenAsData(); |
| if (manifest_data != nullptr) { |
| std::string error; |
| std::unique_ptr<xml::XmlResource> manifest = |
| xml::Inflate(manifest_data->data(), manifest_data->size(), &error); |
| if (manifest != nullptr) { |
| return ApkFormat::kBinary; |
| } |
| } |
| |
| return ApkFormat::kUnknown; |
| } |
| } |
| |
| std::unique_ptr<LoadedApk> LoadedApk::LoadApkFromPath(StringPiece path, |
| android::IDiagnostics* diag) { |
| android::Source source(path); |
| std::string error; |
| std::unique_ptr<io::ZipFileCollection> apk = io::ZipFileCollection::Create(path, &error); |
| if (apk == nullptr) { |
| diag->Error(android::DiagMessage(path) << "failed opening zip: " << error); |
| return {}; |
| } |
| |
| ApkFormat apkFormat = DetermineApkFormat(apk.get()); |
| switch (apkFormat) { |
| case ApkFormat::kBinary: |
| return LoadBinaryApkFromFileCollection(source, std::move(apk), diag); |
| case ApkFormat::kProto: |
| return LoadProtoApkFromFileCollection(source, std::move(apk), diag); |
| default: |
| diag->Error(android::DiagMessage(path) << "could not identify format of APK"); |
| return {}; |
| } |
| } |
| |
| std::unique_ptr<LoadedApk> LoadedApk::LoadProtoApkFromFileCollection( |
| const android::Source& source, unique_ptr<io::IFileCollection> collection, |
| android::IDiagnostics* diag) { |
| std::unique_ptr<ResourceTable> table; |
| |
| io::IFile* table_file = collection->FindFile(kProtoResourceTablePath); |
| if (table_file != nullptr) { |
| pb::ResourceTable pb_table; |
| std::unique_ptr<io::InputStream> in = table_file->OpenInputStream(); |
| if (in == nullptr) { |
| diag->Error(android::DiagMessage(source) << "failed to open " << kProtoResourceTablePath); |
| return {}; |
| } |
| |
| io::ProtoInputStreamReader proto_reader(in.get()); |
| if (!proto_reader.ReadMessage(&pb_table)) { |
| diag->Error(android::DiagMessage(source) << "failed to read " << kProtoResourceTablePath); |
| return {}; |
| } |
| |
| std::string error; |
| table = util::make_unique<ResourceTable>(ResourceTable::Validation::kDisabled); |
| if (!DeserializeTableFromPb(pb_table, collection.get(), table.get(), &error)) { |
| diag->Error(android::DiagMessage(source) |
| << "failed to deserialize " << kProtoResourceTablePath << ": " << error); |
| return {}; |
| } |
| } |
| |
| io::IFile* manifest_file = collection->FindFile(kAndroidManifestPath); |
| if (manifest_file == nullptr) { |
| diag->Error(android::DiagMessage(source) << "failed to find " << kAndroidManifestPath); |
| return {}; |
| } |
| |
| std::unique_ptr<io::InputStream> manifest_in = manifest_file->OpenInputStream(); |
| if (manifest_in == nullptr) { |
| diag->Error(android::DiagMessage(source) << "failed to open " << kAndroidManifestPath); |
| return {}; |
| } |
| |
| pb::XmlNode pb_node; |
| io::ProtoInputStreamReader proto_reader(manifest_in.get()); |
| if (!proto_reader.ReadMessage(&pb_node)) { |
| diag->Error(android::DiagMessage(source) << "failed to read proto " << kAndroidManifestPath); |
| return {}; |
| } |
| |
| std::string error; |
| std::unique_ptr<xml::XmlResource> manifest = DeserializeXmlResourceFromPb(pb_node, &error); |
| if (manifest == nullptr) { |
| diag->Error(android::DiagMessage(source) |
| << "failed to deserialize proto " << kAndroidManifestPath << ": " << error); |
| return {}; |
| } |
| return util::make_unique<LoadedApk>(source, std::move(collection), std::move(table), |
| std::move(manifest), ApkFormat::kProto); |
| } |
| |
| std::unique_ptr<LoadedApk> LoadedApk::LoadBinaryApkFromFileCollection( |
| const android::Source& source, unique_ptr<io::IFileCollection> collection, |
| android::IDiagnostics* diag) { |
| std::unique_ptr<ResourceTable> table; |
| |
| io::IFile* table_file = collection->FindFile(kApkResourceTablePath); |
| if (table_file != nullptr) { |
| table = util::make_unique<ResourceTable>(ResourceTable::Validation::kDisabled); |
| std::unique_ptr<io::IData> data = table_file->OpenAsData(); |
| if (data == nullptr) { |
| diag->Error(android::DiagMessage(source) << "failed to open " << kApkResourceTablePath); |
| return {}; |
| } |
| BinaryResourceParser parser(diag, table.get(), source, data->data(), data->size(), |
| collection.get()); |
| if (!parser.Parse()) { |
| return {}; |
| } |
| } |
| |
| io::IFile* manifest_file = collection->FindFile(kAndroidManifestPath); |
| if (manifest_file == nullptr) { |
| diag->Error(android::DiagMessage(source) << "failed to find " << kAndroidManifestPath); |
| return {}; |
| } |
| |
| std::unique_ptr<io::IData> manifest_data = manifest_file->OpenAsData(); |
| if (manifest_data == nullptr) { |
| diag->Error(android::DiagMessage(source) << "failed to open " << kAndroidManifestPath); |
| return {}; |
| } |
| |
| std::string error; |
| std::unique_ptr<xml::XmlResource> manifest = |
| xml::Inflate(manifest_data->data(), manifest_data->size(), &error); |
| if (manifest == nullptr) { |
| diag->Error(android::DiagMessage(source) |
| << "failed to parse binary " << kAndroidManifestPath << ": " << error); |
| return {}; |
| } |
| return util::make_unique<LoadedApk>(source, std::move(collection), std::move(table), |
| std::move(manifest), ApkFormat::kBinary); |
| } |
| |
| bool LoadedApk::WriteToArchive(IAaptContext* context, const TableFlattenerOptions& options, |
| IArchiveWriter* writer) { |
| FilterChain empty; |
| return WriteToArchive(context, table_.get(), options, &empty, writer); |
| } |
| |
| bool LoadedApk::WriteToArchive(IAaptContext* context, ResourceTable* split_table, |
| const TableFlattenerOptions& options, FilterChain* filters, |
| IArchiveWriter* writer, XmlResource* manifest) { |
| std::set<std::string> referenced_resources; |
| // List the files being referenced in the resource table. |
| for (auto& pkg : split_table->packages) { |
| for (auto& type : pkg->types) { |
| for (auto& entry : type->entries) { |
| for (auto& config_value : entry->values) { |
| FileReference* file_ref = ValueCast<FileReference>(config_value->value.get()); |
| if (file_ref) { |
| referenced_resources.insert(*file_ref->path); |
| } |
| } |
| } |
| } |
| } |
| |
| std::unique_ptr<io::IFileCollectionIterator> iterator = apk_->Iterator(); |
| while (iterator->HasNext()) { |
| io::IFile* file = iterator->Next(); |
| std::string path = file->GetSource().path; |
| |
| std::string output_path = path; |
| bool is_resource = path.find("res/") == 0; |
| if (is_resource) { |
| auto it = options.shortened_path_map.find(path); |
| if (it != options.shortened_path_map.end()) { |
| output_path = it->second; |
| } |
| } |
| |
| // Skip resources that are not referenced if requested. |
| if (is_resource && referenced_resources.find(output_path) == referenced_resources.end()) { |
| if (context->IsVerbose()) { |
| context->GetDiagnostics()->Note(android::DiagMessage() |
| << "Removing resource '" << path << "' from APK."); |
| } |
| continue; |
| } |
| |
| if (!filters->Keep(path)) { |
| if (context->IsVerbose()) { |
| context->GetDiagnostics()->Note(android::DiagMessage() |
| << "Filtered '" << path << "' from APK."); |
| } |
| continue; |
| } |
| |
| // The resource table needs to be re-serialized since it might have changed. |
| if (format_ == ApkFormat::kBinary && path == kApkResourceTablePath) { |
| android::BigBuffer buffer(4096); |
| // TODO(adamlesinski): How to determine if there were sparse entries (and if to encode |
| // with sparse entries) b/35389232. |
| TableFlattener flattener(options, &buffer); |
| if (!flattener.Consume(context, split_table)) { |
| return false; |
| } |
| |
| io::BigBufferInputStream input_stream(&buffer); |
| if (!io::CopyInputStreamToArchive(context, |
| &input_stream, |
| path, |
| ArchiveEntry::kAlign, |
| writer)) { |
| return false; |
| } |
| } else if (format_ == ApkFormat::kProto && path == kProtoResourceTablePath) { |
| SerializeTableOptions proto_serialize_options; |
| proto_serialize_options.collapse_key_stringpool = |
| options.collapse_key_stringpool; |
| proto_serialize_options.name_collapse_exemptions = |
| options.name_collapse_exemptions; |
| pb::ResourceTable pb_table; |
| SerializeTableToPb(*split_table, &pb_table, context->GetDiagnostics(), |
| proto_serialize_options); |
| if (!io::CopyProtoToArchive(context, |
| &pb_table, |
| path, |
| ArchiveEntry::kAlign, writer)) { |
| return false; |
| } |
| } else if (manifest != nullptr && path == "AndroidManifest.xml") { |
| android::BigBuffer buffer(8192); |
| XmlFlattenerOptions xml_flattener_options; |
| xml_flattener_options.use_utf16 = true; |
| XmlFlattener xml_flattener(&buffer, xml_flattener_options); |
| if (!xml_flattener.Consume(context, manifest)) { |
| context->GetDiagnostics()->Error(android::DiagMessage(path) << "flattening failed"); |
| return false; |
| } |
| |
| uint32_t compression_flags = file->WasCompressed() ? ArchiveEntry::kCompress : 0u; |
| io::BigBufferInputStream manifest_buffer_in(&buffer); |
| if (!io::CopyInputStreamToArchive(context, &manifest_buffer_in, path, compression_flags, |
| writer)) { |
| return false; |
| } |
| } else { |
| if (!io::CopyFileToArchivePreserveCompression( |
| context, file, output_path, writer)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| std::unique_ptr<xml::XmlResource> LoadedApk::LoadXml(const std::string& file_path, |
| android::IDiagnostics* diag) const { |
| io::IFile* file = apk_->FindFile(file_path); |
| if (file == nullptr) { |
| diag->Error(android::DiagMessage() << "failed to find file"); |
| return nullptr; |
| } |
| |
| std::unique_ptr<xml::XmlResource> doc; |
| if (format_ == ApkFormat::kProto) { |
| std::unique_ptr<io::InputStream> in = file->OpenInputStream(); |
| if (!in) { |
| diag->Error(android::DiagMessage() << "failed to open file"); |
| return nullptr; |
| } |
| |
| pb::XmlNode pb_node; |
| io::ProtoInputStreamReader proto_reader(in.get()); |
| if (!proto_reader.ReadMessage(&pb_node)) { |
| diag->Error(android::DiagMessage() << "failed to parse file as proto XML"); |
| return nullptr; |
| } |
| |
| std::string err; |
| doc = DeserializeXmlResourceFromPb(pb_node, &err); |
| if (!doc) { |
| diag->Error(android::DiagMessage() << "failed to deserialize proto XML: " << err); |
| return nullptr; |
| } |
| } else if (format_ == ApkFormat::kBinary) { |
| std::unique_ptr<io::IData> data = file->OpenAsData(); |
| if (!data) { |
| diag->Error(android::DiagMessage() << "failed to open file"); |
| return nullptr; |
| } |
| |
| std::string err; |
| doc = xml::Inflate(data->data(), data->size(), &err); |
| if (!doc) { |
| diag->Error(android::DiagMessage() << "failed to parse file as binary XML: " << err); |
| return nullptr; |
| } |
| } |
| |
| return doc; |
| } |
| |
| } // namespace aapt |