| /* |
| * 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. |
| */ |
| |
| #ifndef SIMPLE_PERF_READ_APK_H_ |
| #define SIMPLE_PERF_READ_APK_H_ |
| |
| #include <stdint.h> |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| #include <tuple> |
| |
| #include "read_elf.h" |
| |
| // Container for info an on ELF file embedded into an APK file |
| class EmbeddedElf { |
| public: |
| EmbeddedElf() |
| : entry_offset_(0) |
| , entry_size_(0) |
| { |
| } |
| |
| EmbeddedElf(std::string filepath, |
| std::string entry_name, |
| size_t entry_offset, |
| size_t entry_size) |
| : filepath_(filepath) |
| , entry_name_(entry_name) |
| , entry_offset_(entry_offset) |
| , entry_size_(entry_size) |
| { |
| } |
| |
| // Path to APK file |
| const std::string &filepath() const { return filepath_; } |
| |
| // Entry name within zip archive |
| const std::string &entry_name() const { return entry_name_; } |
| |
| // Offset of zip entry from start of containing APK file |
| uint64_t entry_offset() const { return entry_offset_; } |
| |
| // Size of zip entry (length of embedded ELF) |
| uint32_t entry_size() const { return entry_size_; } |
| |
| private: |
| std::string filepath_; // containing APK path |
| std::string entry_name_; // name of entry in zip index of embedded elf file |
| uint64_t entry_offset_; // offset of ELF from start of containing APK file |
| uint32_t entry_size_; // size of ELF file in zip |
| }; |
| |
| // APK inspector helper class |
| class ApkInspector { |
| public: |
| // Given an APK/ZIP/JAR file and an offset into that file, if the |
| // corresponding region of the APK corresponds to an uncompressed |
| // ELF file, then return pertinent info on the ELF. |
| static EmbeddedElf* FindElfInApkByOffset(const std::string& apk_path, uint64_t file_offset); |
| static std::unique_ptr<EmbeddedElf> FindElfInApkByName(const std::string& apk_path, |
| const std::string& elf_filename); |
| |
| private: |
| static std::unique_ptr<EmbeddedElf> FindElfInApkByOffsetWithoutCache(const std::string& apk_path, |
| uint64_t file_offset); |
| |
| // First component of pair is APK file path, second is offset into APK. |
| typedef std::pair<std::string, uint64_t> ApkOffset; |
| |
| static std::map<ApkOffset, std::unique_ptr<EmbeddedElf>> embedded_elf_cache_; |
| }; |
| |
| // Export for test only. |
| bool IsValidApkPath(const std::string& apk_path); |
| |
| std::string GetUrlInApk(const std::string& apk_path, const std::string& elf_filename); |
| std::tuple<bool, std::string, std::string> SplitUrlInApk(const std::string& path); |
| |
| ElfStatus GetBuildIdFromApkFile(const std::string& apk_path, const std::string& elf_filename, |
| BuildId* build_id); |
| |
| ElfStatus ParseSymbolsFromApkFile(const std::string& apk_path, const std::string& elf_filename, |
| const BuildId& expected_build_id, |
| const std::function<void(const ElfFileSymbol&)>& callback); |
| |
| |
| #endif // SIMPLE_PERF_READ_APK_H_ |