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https://github.com/Sude-/lgogdownloader.git
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463a9c386e
Try to use Linux installers as replacement for Galaxy repository. Linux installers use MojoSetup which means that the installers are Zip files that have bash script and installer binary prepended. We can get zip file entries from zip central directory and then split the game installer to chunks based on those file entries. Therefore we can download individual files from the installer.
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
/* This program is free software. It comes without any warranty, to
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* the extent permitted by applicable law. You can redistribute it
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* and/or modify it under the terms of the Do What The Fuck You Want
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* To Public License, Version 2, as published by Sam Hocevar. See
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* http://www.wtfpl.net/ for more details. */
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#ifndef ZIPUTIL_H
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#define ZIPUTIL_H
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#include <cstdint>
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#include <ctime>
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#include <string>
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#include <iostream>
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#include <boost/filesystem.hpp>
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#define ZIP_LOCAL_HEADER_SIGNATURE 0x04034b50
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#define ZIP_CD_HEADER_SIGNATURE 0x02014b50
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#define ZIP_EOCD_HEADER_SIGNATURE 0x06054b50
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#define ZIP_EOCD_HEADER_SIGNATURE64 0x06064b50
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#define ZIP_EXTENSION_ZIP64 0x0001
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#define ZIP_EXTENDED_TIMESTAMP 0x5455
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#define ZIP_INFOZIP_UNIX_NEW 0x7875
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typedef struct
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{
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uint32_t header = 0;
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uint16_t disk = 0;
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uint16_t cd_start_disk = 0;
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uint16_t cd_records = 0;
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uint16_t total_cd_records = 0;
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uint32_t cd_size = 0;
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uint32_t cd_start_offset = 0;
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uint16_t comment_length = 0;
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std::string comment;
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} zipEOCD;
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typedef struct
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{
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uint32_t header = 0;
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uint64_t directory_record_size = 0;
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uint16_t version_made_by = 0;
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uint16_t version_needed = 0;
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uint32_t cd = 0;
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uint32_t cd_start = 0;
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uint64_t cd_total_disk = 0;
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uint64_t cd_total = 0;
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uint64_t cd_size = 0;
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uint64_t cd_offset = 0;
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std::string comment;
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} zip64EOCD;
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typedef struct
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{
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uint32_t header = 0;
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uint16_t version_made_by = 0;
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uint16_t version_needed = 0;
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uint16_t flag = 0;
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uint16_t compression_method = 0;
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uint16_t mod_date = 0;
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uint16_t mod_time = 0;
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uint32_t crc32 = 0;
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uint64_t comp_size = 0;
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uint64_t uncomp_size = 0;
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uint16_t filename_length = 0;
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uint16_t extra_length = 0;
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uint16_t comment_length = 0;
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uint32_t disk_num = 0;
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uint16_t internal_file_attr = 0;
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uint32_t external_file_attr = 0;
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uint64_t disk_offset = 0;
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std::string filename;
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std::string extra;
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std::string comment;
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time_t timestamp = 0;
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bool isLocalCDEntry = false;
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} zipCDEntry;
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namespace ZipUtil
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{
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off_t getMojoSetupScriptSize(std::stringstream *stream);
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off_t getMojoSetupInstallerSize(std::stringstream *stream);
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struct tm date_time_to_tm(uint64_t date, uint64_t time);
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bool isValidDate(struct tm timeinfo);
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uint64_t readValue(std::istream *stream, uint32_t len);
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uint64_t readUInt64(std::istream *stream);
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uint32_t readUInt32(std::istream *stream);
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uint16_t readUInt16(std::istream *stream);
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uint8_t readUInt8(std::istream *stream);
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off_t getZipEOCDOffsetSignature(std::istream *stream, const uint32_t& signature);
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off_t getZipEOCDOffset(std::istream *stream);
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off_t getZip64EOCDOffset(std::istream *stream);
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zipEOCD readZipEOCDStruct(std::istream *stream, const off_t& eocd_start_pos = 0);
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zip64EOCD readZip64EOCDStruct(std::istream *stream, const off_t& eocd_start_pos = 0);
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zipCDEntry readZipCDEntry(std::istream *stream);
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int extractFile(const std::string& input_file_path, const std::string& output_file_path);
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int extractStream(std::istream* input_stream, std::ostream* output_stream);
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boost::filesystem::perms getBoostFilePermission(const uint16_t& attributes);
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bool isSymlink(const uint16_t& attributes);
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}
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#endif // ZIPUTIL_H
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