xbmc/filesystem/ZipManager.h

   1 #ifndef ZIP_MANAGER_H_
   2 #define ZIP_MANAGER_H_
   3
   4 /*
   5  *      Copyright (C) 2005-2013 Team XBMC
   6  *      http://xbmc.org
   7  *
   8  *  This Program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2, or (at your option)
  11  *  any later version.
  12  *
  13  *  This Program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with XBMC; see the file COPYING.  If not, see
  20  *  <http://www.gnu.org/licenses/>.
  21  *
  22  */
  23
  24 // See http://www.pkware.com/documents/casestudies/APPNOTE.TXT
  25 #define ZIP_LOCAL_HEADER 0x04034b50
  26 #define ZIP_CENTRAL_HEADER 0x02014b50
  27 #define ZIP_END_CENTRAL_HEADER 0x06054b50
  28 #define LHDR_SIZE 30
  29 #define CHDR_SIZE 46
  30 #define ECDREC_SIZE 22
  31
  32 #include  "utils/StdString.h"
  33
  34 #include <memory.h>
  35 #include <vector>
  36 #include <map>
  37
  38 struct SZipEntry {
  39   unsigned int header;
  40   unsigned short version;
  41   unsigned short flags;
  42   unsigned short method;
  43   unsigned short mod_time;
  44   unsigned short mod_date;
  45   unsigned int crc32;
  46   unsigned int csize; // compressed size
  47   unsigned int usize; // uncompressed size
  48   unsigned short flength; // filename length
  49   unsigned short elength; // extra field length (local file header)
  50   unsigned short eclength; // extra field length (central file header)
  51   unsigned short clength; // file comment length (central file header)
  52   unsigned int lhdrOffset; // Relative offset of local header
  53   int64_t offset;         // offset in file to compressed data
  54   char name[255];
  55
  56   SZipEntry()
  57   {
  58     header = 0;
  59     version = 0;
  60     flags = 0;
  61     method = 0;
  62     mod_time = 0;
  63     mod_date = 0;
  64     crc32 = 0;
  65     csize = 0;
  66     usize = 0;
  67     flength = 0;
  68     elength = 0;
  69     eclength = 0;
  70     clength = 0;
  71     lhdrOffset = 0;
  72     offset = 0;
  73     name[0] = '\0';
  74   }
  75
  76   SZipEntry(const SZipEntry& SNewItem)
  77   {
  78     memcpy(&header,&SNewItem.header,sizeof(unsigned int));
  79     memcpy(&version,&SNewItem.version,sizeof(unsigned short));
  80     memcpy(&flags,&SNewItem.flags,sizeof(unsigned short));
  81     memcpy(&method,&SNewItem.method,sizeof(unsigned short));
  82     memcpy(&mod_time,&SNewItem.mod_time,sizeof(unsigned short));
  83     memcpy(&mod_date,&SNewItem.mod_date,sizeof(unsigned short));
  84     memcpy(&crc32,&SNewItem.crc32,sizeof(unsigned int));
  85     memcpy(&csize,&SNewItem.csize,sizeof(unsigned int));
  86     memcpy(&usize,&SNewItem.usize,sizeof(unsigned int));
  87     memcpy(&flength,&SNewItem.flength,sizeof(unsigned short));
  88     memcpy(&elength,&SNewItem.elength,sizeof(unsigned short));
  89     memcpy(&eclength,&SNewItem.eclength,sizeof(unsigned short));
  90     memcpy(&clength,&SNewItem.clength,sizeof(unsigned short));
  91     memcpy(&lhdrOffset,&SNewItem.lhdrOffset,sizeof(unsigned int));
  92     memcpy(&offset,&SNewItem.offset,sizeof(int64_t));
  93     memcpy(name,SNewItem.name,255*sizeof(char));
  94   }
  95 };
  96
  97 class CZipManager
  98 {
  99 public:
 100   CZipManager();
 101   ~CZipManager();
 102
 103   bool GetZipList(const CStdString& strPath, std::vector<SZipEntry>& items);
 104   bool GetZipEntry(const CStdString& strPath, SZipEntry& item);
 105   bool ExtractArchive(const CStdString& strArchive, const CStdString& strPath);
 106   void CleanUp(const CStdString& strArchive, const CStdString& strPath); // deletes extracted archive. use with care!
 107   void release(const CStdString& strPath); // release resources used by list zip
 108   static void readHeader(const char* buffer, SZipEntry& info);
 109   static void readCHeader(const char* buffer, SZipEntry& info);
 110 private:
 111   std::map<CStdString,std::vector<SZipEntry> > mZipMap;
 112   std::map<CStdString,int64_t> mZipDate;
 113 };
 114
 115 extern CZipManager g_ZipManager;
 116
 117 #endif