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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
// See http://www.pkware.com/documents/casestudies/APPNOTE.TXT
#define ZIP_LOCAL_HEADER 0x04034b50
#define ZIP_DATA_RECORD_HEADER 0x08074b50
#define ZIP_CENTRAL_HEADER 0x02014b50
#define ZIP_END_CENTRAL_HEADER 0x06054b50
#define ZIP_SPLIT_ARCHIVE_HEADER 0x30304b50
#define LHDR_SIZE 30
#define DREC_SIZE 16
#define CHDR_SIZE 46
#define ECDREC_SIZE 22
#include <cstring>
#include <map>
#include <string>
#include <vector>
class CURL;
static const std::string PATH_TRAVERSAL(R"_((^|\/|\\)\.{2}($|\/|\\))_");
struct SZipEntry {
unsigned int header = 0;
unsigned short version = 0;
unsigned short flags = 0;
unsigned short method = 0;
unsigned short mod_time = 0;
unsigned short mod_date = 0;
unsigned int crc32 = 0;
unsigned int csize = 0; // compressed size
unsigned int usize = 0; // uncompressed size
unsigned short flength = 0; // filename length
unsigned short elength = 0; // extra field length (local file header)
unsigned short eclength = 0; // extra field length (central file header)
unsigned short clength = 0; // file comment length (central file header)
unsigned int lhdrOffset = 0; // Relative offset of local header
int64_t offset = 0; // offset in file to compressed data
char name[255];
SZipEntry()
{
name[0] = '\0';
}
};
class CZipManager
{
public:
CZipManager();
~CZipManager();
bool GetZipList(const CURL& url, std::vector<SZipEntry>& items);
bool GetZipEntry(const CURL& url, SZipEntry& item);
bool ExtractArchive(const std::string& strArchive, const std::string& strPath);
bool ExtractArchive(const CURL& archive, const std::string& strPath);
void release(const std::string& strPath); // release resources used by list zip
static void readHeader(const char* buffer, SZipEntry& info);
static void readCHeader(const char* buffer, SZipEntry& info);
private:
std::map<std::string,std::vector<SZipEntry> > mZipMap;
std::map<std::string,int64_t> mZipDate;
template<typename T>
static T ReadUnaligned(const void* mem)
{
T var;
std::memcpy(&var, mem, sizeof(T));
return var;
}
};
extern CZipManager g_ZipManager;
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