text: /* zip.c -- IO on .zip files using zlib
     Version 1.1, February 14h, 2010
     part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
  
           Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
  
           Modifications for Zip64 support
           Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
  
           For more info read MiniZip_info.txt
  
           Changes
     Oct-2009 - Mathias Svensson - Remove old C style function prototypes
     Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives
     Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions.
     Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data
                                   It is used when recreting zip archive with RAW when deleting items from a zip.
                                   ZIP64 data is automatically added to items that needs it, and existing ZIP64 data need to be removed.
     Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required)
     Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer
  
  */
  
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <time.h>
  #include "zlib.h"
  #include "zip.h"
  
  #ifdef STDC
  #  include <stddef.h>
  #  include <string.h>
  #  include <stdlib.h>
  #endif
  #ifdef NO_ERRNO_H
      extern int errno;
  #else
  #   include <errno.h>
  #endif
  
  
  #ifndef local
  #  define local static
  #endif
  /* compile with -Dlocal if your debugger can't find static symbols */
  
  #ifndef VERSIONMADEBY
  # define VERSIONMADEBY   (0x0) /* platform depedent */
  #endif
  
  #ifndef Z_BUFSIZE
  #define Z_BUFSIZE (64*1024) //(16384)
  #endif
  
  #ifndef Z_MAXFILENAMEINZIP
  #define Z_MAXFILENAMEINZIP (256)
  #endif
  
  #ifndef ALLOC
  # define ALLOC(size) (malloc(size))
  #endif
  #ifndef TRYFREE
  # define TRYFREE(p) {if (p) free(p);}
  #endif
  
  /*
  #define SIZECENTRALDIRITEM (0x2e)
  #define SIZEZIPLOCALHEADER (0x1e)
  */
  
  /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
  
  
  // NOT sure that this work on ALL platform
  #define MAKEULONG64(a, b) ((ZPOS64_T)(((unsigned long)(a)) | ((ZPOS64_T)((unsigned long)(b))) << 32))
  
  #ifndef SEEK_CUR
  #define SEEK_CUR    1
  #endif
  
  #ifndef SEEK_END
  #define SEEK_END    2
  #endif
  
  #ifndef SEEK_SET
  #define SEEK_SET    0
  #endif
  
  #ifndef DEF_MEM_LEVEL
  #if MAX_MEM_LEVEL >= 8
  #  define DEF_MEM_LEVEL 8
  #else
  #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  #endif
  #endif
  const char zip_copyright[] =" zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
  
  
  #define SIZEDATA_INDATABLOCK (4096-(4*4))
  
  #define LOCALHEADERMAGIC    (0x04034b50)
  #define CENTRALHEADERMAGIC  (0x02014b50)
  #define ENDHEADERMAGIC      (0x06054b50)
  #define ZIP64ENDHEADERMAGIC      (0x6064b50)
  #define ZIP64ENDLOCHEADERMAGIC   (0x7064b50)
  
  #define FLAG_LOCALHEADER_OFFSET (0x06)
  #define CRC_LOCALHEADER_OFFSET  (0x0e)
  
  #define SIZECENTRALHEADER (0x2e) /* 46 */
  
  typedef struct linkedlist_datablock_internal_s
  {
    struct linkedlist_datablock_internal_s* next_datablock;
    uLong  avail_in_this_block;
    uLong  filled_in_this_block;
    uLong  unused; /* for future use and alignment */
    unsigned char data[SIZEDATA_INDATABLOCK];
  } linkedlist_datablock_internal;
  
  typedef struct linkedlist_data_s
  {
      linkedlist_datablock_internal* first_block;
      linkedlist_datablock_internal* last_block;
  } linkedlist_data;
  
  
  typedef struct
  {
      z_stream stream;            /* zLib stream structure for inflate */
  #ifdef HAVE_BZIP2
      bz_stream bstream;          /* bzLib stream structure for bziped */
  #endif
  
      int  stream_initialised;    /* 1 is stream is initialised */
      uInt pos_in_buffered_data;  /* last written byte in buffered_data */
  
      ZPOS64_T pos_local_header;     /* offset of the local header of the file
                                       currenty writing */
      char* central_header;       /* central header data for the current file */
      uLong size_centralExtra;
      uLong size_centralheader;   /* size of the central header for cur file */
      uLong size_centralExtraFree; /* Extra bytes allocated to the centralheader but that are not used */
      uLong flag;                 /* flag of the file currently writing */
  
      int  method;                /* compression method of file currenty wr.*/
      int  raw;                   /* 1 for directly writing raw data */
      Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
      uLong dosDate;
      uLong crc32;
      int  encrypt;
      int  zip64;               /* Add ZIP64 extened information in the extra field */
      ZPOS64_T pos_zip64extrainfo;
      ZPOS64_T totalCompressedData;
      ZPOS64_T totalUncompressedData;
  #ifndef NOCRYPT
      unsigned long keys[3];     /* keys defining the pseudo-random sequence */
      const z_crc_t* pcrc_32_tab;
      int crypt_header_size;
  #endif
  } curfile64_info;
  
  typedef struct
  {
      zlib_filefunc64_32_def z_filefunc;
      voidpf filestream;        /* io structore of the zipfile */
      linkedlist_data central_dir;/* datablock with central dir in construction*/
      int  in_opened_file_inzip;  /* 1 if a file in the zip is currently writ.*/
      curfile64_info ci;            /* info on the file curretly writing */
  
      ZPOS64_T begin_pos;            /* position of the beginning of the zipfile */
      ZPOS64_T add_position_when_writing_offset;
      ZPOS64_T number_entry;
  
  #ifndef NO_ADDFILEINEXISTINGZIP
      char *globalcomment;
  #endif
  
  } zip64_internal;
  
  
  #ifndef NOCRYPT
  #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
  #include "crypt.h"
  #endif
  
  local linkedlist_datablock_internal* allocate_new_datablock()
  {
      linkedlist_datablock_internal* ldi;
      ldi = (linkedlist_datablock_internal*)
                   ALLOC(sizeof(linkedlist_datablock_internal));
      if (ldi!=NULL)
      {
          ldi->next_datablock = NULL ;
          ldi->filled_in_this_block = 0 ;
          ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
      }
      return ldi;
  }
  
  local void free_datablock(linkedlist_datablock_internal* ldi)
  {
      while (ldi!=NULL)
      {
          linkedlist_datablock_internal* ldinext = ldi->next_datablock;
          TRYFREE(ldi);
          ldi = ldinext;
      }
  }
  
  local void init_linkedlist(linkedlist_data* ll)
  {
      ll->first_block = ll->last_block = NULL;
  }
  
  local void free_linkedlist(linkedlist_data* ll)
  {
      free_datablock(ll->first_block);
      ll->first_block = ll->last_block = NULL;
  }
  
  
  local int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len)
  {
      linkedlist_datablock_internal* ldi;
      const unsigned char* from_copy;
  
      if (ll==NULL)
          return ZIP_INTERNALERROR;
  
      if (ll->last_block == NULL)
      {
          ll->first_block = ll->last_block = allocate_new_datablock();
          if (ll->first_block == NULL)
              return ZIP_INTERNALERROR;
      }
  
      ldi = ll->last_block;
      from_copy = (unsigned char*)buf;
  
      while (len>0)
      {
          uInt copy_this;
          uInt i;
          unsigned char* to_copy;
  
          if (ldi->avail_in_this_block==0)
          {
              ldi->next_datablock = allocate_new_datablock();
              if (ldi->next_datablock == NULL)
                  return ZIP_INTERNALERROR;
              ldi = ldi->next_datablock ;
              ll->last_block = ldi;
          }
  
          if (ldi->avail_in_this_block < len)
              copy_this = (uInt)ldi->avail_in_this_block;
          else
              copy_this = (uInt)len;
  
          to_copy = &(ldi->data[ldi->filled_in_this_block]);
  
          for (i=0;i<copy_this;i++)
              *(to_copy+i)=*(from_copy+i);
  
          ldi->filled_in_this_block += copy_this;
          ldi->avail_in_this_block -= copy_this;
          from_copy += copy_this ;
          len -= copy_this;
      }
      return ZIP_OK;
  }
  
  
  
  /****************************************************************************/
  
  #ifndef NO_ADDFILEINEXISTINGZIP
  /* ===========================================================================
     Inputs a long in LSB order to the given file
     nbByte == 1, 2 ,4 or 8 (byte, short or long, ZPOS64_T)
  */
  
  local int zip64local_putValue OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte));
  local int zip64local_putValue (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte)
  {
      unsigned char buf[8];
      int n;
      for (n = 0; n < nbByte; n++)
      {
          buf[n] = (unsigned char)(x & 0xff);
          x >>= 8;
      }
      if (x != 0)
        {     /* data overflow - hack for ZIP64 (X Roche) */
        for (n = 0; n < nbByte; n++)
          {
            buf[n] = 0xff;
          }
        }
  
      if (ZWRITE64(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte)
          return ZIP_ERRNO;
      else
          return ZIP_OK;
  }
  
  local void zip64local_putValue_inmemory OF((void* dest, ZPOS64_T x, int nbByte));
  local void zip64local_putValue_inmemory (void* dest, ZPOS64_T x, int nbByte)
  {
      unsigned char* buf=(unsigned char*)dest;
      int n;
      for (n = 0; n < nbByte; n++) {
          buf[n] = (unsigned char)(x & 0xff);
          x >>= 8;
      }
  
      if (x != 0)
      {     /* data overflow - hack for ZIP64 */
         for (n = 0; n < nbByte; n++)
         {
            buf[n] = 0xff;
         }
      }
  }
  
  /****************************************************************************/
  
  
  local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm)
  {
      uLong year = (uLong)ptm->tm_year;
      if (year>=1980)
          year-=1980;
      else if (year>=80)
          year-=80;
      return
        (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) |
          ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
  }
  
  
  /****************************************************************************/
  
  local int zip64local_getByte OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int *pi));
  
  local int zip64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def,voidpf filestream,int* pi)
  {
      unsigned char c;
      int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1);
      if (err==1)
      {
          *pi = (int)c;
          return ZIP_OK;
      }
      else
      {
          if (ZERROR64(*pzlib_filefunc_def,filestream))
              return ZIP_ERRNO;
          else
              return ZIP_EOF;
      }
  }
  
  
  /* ===========================================================================
     Reads a long in LSB order from the given gz_stream. Sets
  */
  local int zip64local_getShort OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX));
  
  local int zip64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX)
  {
      uLong x ;
      int i = 0;
      int err;
  
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
      x = (uLong)i;
  
      if (err==ZIP_OK)
          err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
      x += ((uLong)i)<<8;
  
      if (err==ZIP_OK)
          *pX = x;
      else
          *pX = 0;
      return err;
  }
  
  local int zip64local_getLong OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong *pX));
  
  local int zip64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX)
  {
      uLong x ;
      int i = 0;
      int err;
  
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
      x = (uLong)i;
  
      if (err==ZIP_OK)
          err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
      x += ((uLong)i)<<8;
  
      if (err==ZIP_OK)
          err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
      x += ((uLong)i)<<16;
  
      if (err==ZIP_OK)
          err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
      x += ((uLong)i)<<24;
  
      if (err==ZIP_OK)
          *pX = x;
      else
          *pX = 0;
      return err;
  }
  
  local int zip64local_getLong64 OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX));
  
  
  local int zip64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX)
  {
    ZPOS64_T x;
    int i = 0;
    int err;
  
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x = (ZPOS64_T)i;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<8;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<16;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<24;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<32;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<40;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<48;
  
    if (err==ZIP_OK)
      err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((ZPOS64_T)i)<<56;
  
    if (err==ZIP_OK)
      *pX = x;
    else
      *pX = 0;
  
    return err;
  }
  
  #ifndef BUFREADCOMMENT
  #define BUFREADCOMMENT (0x400)
  #endif
  /*
    Locate the Central directory of a zipfile (at the end, just before
      the global comment)
  */
  local ZPOS64_T zip64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream));
  
  local ZPOS64_T zip64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)
  {
    unsigned char* buf;
    ZPOS64_T uSizeFile;
    ZPOS64_T uBackRead;
    ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
    ZPOS64_T uPosFound=0;
  
    if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
      return 0;
  
  
    uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);
  
    if (uMaxBack>uSizeFile)
      uMaxBack = uSizeFile;
  
    buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
    if (buf==NULL)
      return 0;
  
    uBackRead = 4;
    while (uBackRead<uMaxBack)
    {
      uLong uReadSize;
      ZPOS64_T uReadPos ;
      int i;
      if (uBackRead+BUFREADCOMMENT>uMaxBack)
        uBackRead = uMaxBack;
      else
        uBackRead+=BUFREADCOMMENT;
      uReadPos = uSizeFile-uBackRead ;
  
      uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
        (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
      if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
        break;
  
      if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
        break;
  
      for (i=(int)uReadSize-3; (i--)>0;)
        if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
          ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
        {
          uPosFound = uReadPos+i;
          break;
        }
  
        if (uPosFound!=0)
          break;
    }
    TRYFREE(buf);
    return uPosFound;
  }
  
  /*
  Locate the End of Zip64 Central directory locator and from there find the CD of a zipfile (at the end, just before
  the global comment)
  */
  local ZPOS64_T zip64local_SearchCentralDir64 OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream));
  
  local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream)
  {
    unsigned char* buf;
    ZPOS64_T uSizeFile;
    ZPOS64_T uBackRead;
    ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
    ZPOS64_T uPosFound=0;
    uLong uL;
    ZPOS64_T relativeOffset;
  
    if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
      return 0;
  
    uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);
  
    if (uMaxBack>uSizeFile)
      uMaxBack = uSizeFile;
  
    buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
    if (buf==NULL)
      return 0;
  
    uBackRead = 4;
    while (uBackRead<uMaxBack)
    {
      uLong uReadSize;
      ZPOS64_T uReadPos;
      int i;
      if (uBackRead+BUFREADCOMMENT>uMaxBack)
        uBackRead = uMaxBack;
      else
        uBackRead+=BUFREADCOMMENT;
      uReadPos = uSizeFile-uBackRead ;
  
      uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
        (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
      if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
        break;
  
      if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
        break;
  
      for (i=(int)uReadSize-3; (i--)>0;)
      {
        // Signature "0x07064b50" Zip64 end of central directory locater
        if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07))
        {
          uPosFound = uReadPos+i;
          break;
        }
      }
  
        if (uPosFound!=0)
          break;
    }
  
    TRYFREE(buf);
    if (uPosFound == 0)
      return 0;
  
    /* Zip64 end of central directory locator */
    if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0)
      return 0;
  
    /* the signature, already checked */
    if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
      return 0;
  
    /* number of the disk with the start of the zip64 end of  central directory */
    if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
      return 0;
    if (uL != 0)
      return 0;
  
    /* relative offset of the zip64 end of central directory record */
    if (zip64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=ZIP_OK)
      return 0;
  
    /* total number of disks */
    if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
      return 0;
    if (uL != 1)
      return 0;
  
    /* Goto Zip64 end of central directory record */
    if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0)
      return 0;
  
    /* the signature */
    if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
      return 0;
  
    if (uL != 0x06064b50) // signature of 'Zip64 end of central directory'
      return 0;
  
    return relativeOffset;
  }
  
  int LoadCentralDirectoryRecord(zip64_internal* pziinit)
  {
    int err=ZIP_OK;
    ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
  
    ZPOS64_T size_central_dir;     /* size of the central directory  */
    ZPOS64_T offset_central_dir;   /* offset of start of central directory */
    ZPOS64_T central_pos;
    uLong uL;
  
    uLong number_disk;          /* number of the current dist, used for
                                spaning ZIP, unsupported, always 0*/
    uLong number_disk_with_CD;  /* number the the disk with central dir, used
                                for spaning ZIP, unsupported, always 0*/
    ZPOS64_T number_entry;
    ZPOS64_T number_entry_CD;      /* total number of entries in
                                  the central dir
                                  (same than number_entry on nospan) */
    uLong VersionMadeBy;
    uLong VersionNeeded;
    uLong size_comment;
  
    int hasZIP64Record = 0;
  
    // check first if we find a ZIP64 record
    central_pos = zip64local_SearchCentralDir64(&pziinit->z_filefunc,pziinit->filestream);
    if(central_pos > 0)
    {
      hasZIP64Record = 1;
    }
    else if(central_pos == 0)
    {
      central_pos = zip64local_SearchCentralDir(&pziinit->z_filefunc,pziinit->filestream);
    }
  
  /* disable to allow appending to empty ZIP archive
          if (central_pos==0)
              err=ZIP_ERRNO;
  */
  
    if(hasZIP64Record)
    {
      ZPOS64_T sizeEndOfCentralDirectory;
      if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
        err=ZIP_ERRNO;
  
      /* the signature, already checked */
      if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* size of zip64 end of central directory record */
      if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &sizeEndOfCentralDirectory)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* version made by */
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionMadeBy)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* version needed to extract */
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionNeeded)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* number of this disk */
      if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* number of the disk with the start of the central directory */
      if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* total number of entries in the central directory on this disk */
      if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &number_entry)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* total number of entries in the central directory */
      if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&number_entry_CD)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0))
        err=ZIP_BADZIPFILE;
  
      /* size of the central directory */
      if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&size_central_dir)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* offset of start of central directory with respect to the
      starting disk number */
      if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&offset_central_dir)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      // TODO..
      // read the comment from the standard central header.
      size_comment = 0;
    }
    else
    {
      // Read End of central Directory info
      if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
        err=ZIP_ERRNO;
  
      /* the signature, already checked */
      if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* number of this disk */
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* number of the disk with the start of the central directory */
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK)
        err=ZIP_ERRNO;
  
      /* total number of entries in the central dir on this disk */
      number_entry = 0;
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
        err=ZIP_ERRNO;
      else
        number_entry = uL;
  
      /* total number of entries in the central dir */
      number_entry_CD = 0;
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
        err=ZIP_ERRNO;
      else
        number_entry_CD = uL;
  
      if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0))
        err=ZIP_BADZIPFILE;
  
      /* size of the central directory */
      size_central_dir = 0;
      if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
        err=ZIP_ERRNO;
      else
        size_central_dir = uL;
  
      /* offset of start of central directory with respect to the starting disk number */
      offset_central_dir = 0;
      if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
        err=ZIP_ERRNO;
      else
        offset_central_dir = uL;
  
  
      /* zipfile global comment length */
      if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &size_comment)!=ZIP_OK)
        err=ZIP_ERRNO;
    }
  
    if ((central_pos<offset_central_dir+size_central_dir) &&
      (err==ZIP_OK))
      err=ZIP_BADZIPFILE;
  
    if (err!=ZIP_OK)
    {
      ZCLOSE64(pziinit->z_filefunc, pziinit->filestream);
      return ZIP_ERRNO;
    }
  
    if (size_comment>0)
    {
      pziinit->globalcomment = (char*)ALLOC(size_comment+1);
      if (pziinit->globalcomment)
      {
        size_comment = ZREAD64(pziinit->z_filefunc, pziinit->filestream, pziinit->globalcomment,size_comment);
        pziinit->globalcomment[size_comment]=0;
      }
    }
  
    byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir);
    pziinit->add_position_when_writing_offset = byte_before_the_zipfile;
  
    {
      ZPOS64_T size_central_dir_to_read = size_central_dir;
      size_t buf_size = SIZEDATA_INDATABLOCK;
      void* buf_read = (void*)ALLOC(buf_size);
      if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir + byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
        err=ZIP_ERRNO;
  
      while ((size_central_dir_to_read>0) && (err==ZIP_OK))
      {
        ZPOS64_T read_this = SIZEDATA_INDATABLOCK;
        if (read_this > size_central_dir_to_read)
          read_this = size_central_dir_to_read;
  
        if (ZREAD64(pziinit->z_filefunc, pziinit->filestream,buf_read,(uLong)read_this) != read_this)
          err=ZIP_ERRNO;
  
        if (err==ZIP_OK)
          err = add_data_in_datablock(&pziinit->central_dir,buf_read, (uLong)read_this);
  
        size_central_dir_to_read-=read_this;
      }
      TRYFREE(buf_read);
    }
    pziinit->begin_pos = byte_before_the_zipfile;
    pziinit->number_entry = number_entry_CD;
  
    if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET) != 0)
      err=ZIP_ERRNO;
  
    return err;
  }
  
  
  #endif /* !NO_ADDFILEINEXISTINGZIP*/
  
  
  /************************************************************/
  extern zipFile ZEXPORT zipOpen3 (const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_32_def* pzlib_filefunc64_32_def)
  {
      zip64_internal ziinit;
      zip64_internal* zi;
      int err=ZIP_OK;
  
      ziinit.z_filefunc.zseek32_file = NULL;
      ziinit.z_filefunc.ztell32_file = NULL;
      if (pzlib_filefunc64_32_def==NULL)
          fill_fopen64_filefunc(&ziinit.z_filefunc.zfile_func64);
      else
          ziinit.z_filefunc = *pzlib_filefunc64_32_def;
  
      ziinit.filestream = ZOPEN64(ziinit.z_filefunc,
                    pathname,
                    (append == APPEND_STATUS_CREATE) ?
                    (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
                      (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
  
      if (ziinit.filestream == NULL)
          return NULL;
  
      if (append == APPEND_STATUS_CREATEAFTER)
          ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END);
  
      ziinit.begin_pos = ZTELL64(ziinit.z_filefunc,ziinit.filestream);
      ziinit.in_opened_file_inzip = 0;
      ziinit.ci.stream_initialised = 0;
      ziinit.number_entry = 0;
      ziinit.add_position_when_writing_offset = 0;
      init_linkedlist(&(ziinit.central_dir));
  
  
  
      zi = (zip64_internal*)ALLOC(sizeof(zip64_internal));
      if (zi==NULL)
      {
          ZCLOSE64(ziinit.z_filefunc,ziinit.filestream);
          return NULL;
      }
  
      /* now we add file in a zipfile */
  #    ifndef NO_ADDFILEINEXISTINGZIP
      ziinit.globalcomment = NULL;
      if (append == APPEND_STATUS_ADDINZIP)
      {
        // Read and Cache Central Directory Records
        err = LoadCentralDirectoryRecord(&ziinit);
      }
  
      if (globalcomment)
      {
        *globalcomment = ziinit.globalcomment;
      }
  #    endif /* !NO_ADDFILEINEXISTINGZIP*/
  
      if (err != ZIP_OK)
      {
  #    ifndef NO_ADDFILEINEXISTINGZIP
          TRYFREE(ziinit.globalcomment);
  #    endif /* !NO_ADDFILEINEXISTINGZIP*/
          TRYFREE(zi);
          return NULL;
      }
      else
      {
          *zi = ziinit;
          return (zipFile)zi;
      }
  }
  
  extern zipFile ZEXPORT zipOpen2 (const char *pathname, int append, zipcharpc* globalcomment, zlib_filefunc_def* pzlib_filefunc32_def)
  {
      if (pzlib_filefunc32_def != NULL)
      {
          zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
          fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def);
          return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill);
      }
      else
          return zipOpen3(pathname, append, globalcomment, NULL);
  }
  
  extern zipFile ZEXPORT zipOpen2_64 (const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_def* pzlib_filefunc_def)
  {
      if (pzlib_filefunc_def != NULL)
      {
          zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
          zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
          zlib_filefunc64_32_def_fill.ztell32_file = NULL;
          zlib_filefunc64_32_def_fill.zseek32_file = NULL;
          return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill);
      }
      else
          return zipOpen3(pathname, append, globalcomment, NULL);
  }
  
  
  
  extern zipFile ZEXPORT zipOpen (const char* pathname, int append)
  {
      return zipOpen3((const void*)pathname,append,NULL,NULL);
  }
  
  extern zipFile ZEXPORT zipOpen64 (const void* pathname, int append)
  {
      return zipOpen3(pathname,append,NULL,NULL);
  }
  
  int Write_LocalFileHeader(zip64_internal* zi, const char* filename, uInt size_extrafield_local, const void* extrafield_local)
  {
    /* write the local header */
    int err;
    uInt size_filename = (uInt)strlen(filename);
    uInt size_extrafield = size_extrafield_local;
  
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC, 4);
  
    if (err==ZIP_OK)
    {
      if(zi->ci.zip64)
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);/* version needed to extract */
      else
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
    }
  
    if (err==ZIP_OK)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
  
    if (err==ZIP_OK)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
  
    if (err==ZIP_OK)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
  
    // CRC / Compressed size / Uncompressed size will be filled in later and rewritten later
    if (err==ZIP_OK)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
    if (err==ZIP_OK)
    {
      if(zi->ci.zip64)
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* compressed size, unknown */
      else
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
    }
    if (err==ZIP_OK)
    {
      if(zi->ci.zip64)
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* uncompressed size, unknown */
      else
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
    }
  
    if (err==ZIP_OK)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
  
    if(zi->ci.zip64)
    {
      size_extrafield += 20;
    }
  
    if (err==ZIP_OK)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield,2);
  
    if ((err==ZIP_OK) && (size_filename > 0))
    {
      if (ZWRITE64(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
        err = ZIP_ERRNO;
    }
  
    if ((err==ZIP_OK) && (size_extrafield_local > 0))
    {
      if (ZWRITE64(zi->z_filefunc, zi->filestream, extrafield_local, size_extrafield_local) != size_extrafield_local)
        err = ZIP_ERRNO;
    }
  
  
    if ((err==ZIP_OK) && (zi->ci.zip64))
    {
        // write the Zip64 extended info
        short HeaderID = 1;
        short DataSize = 16;
        ZPOS64_T CompressedSize = 0;
        ZPOS64_T UncompressedSize = 0;
  
        // Remember position of Zip64 extended info for the local file header. (needed when we update size after done with file)
        zi->ci.pos_zip64extrainfo = ZTELL64(zi->z_filefunc,zi->filestream);
  
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (short)HeaderID,2);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (short)DataSize,2);
  
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)UncompressedSize,8);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)CompressedSize,8);
    }
  
    return err;
  }
  
  /*
   NOTE.
   When writing RAW the ZIP64 extended information in extrafield_local and extrafield_global needs to be stripped
   before calling this function it can be done with zipRemoveExtraInfoBlock
  
   It is not done here because then we need to realloc a new buffer since parameters are 'const' and I want to minimize
   unnecessary allocations.
   */
  extern int ZEXPORT zipOpenNewFileInZip4_64 (zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                           const void* extrafield_local, uInt size_extrafield_local,
                                           const void* extrafield_global, uInt size_extrafield_global,
                                           const char* comment, int method, int level, int raw,
                                           int windowBits,int memLevel, int strategy,
                                           const char* password, uLong crcForCrypting,
                                           uLong versionMadeBy, uLong flagBase, int zip64)
  {
      zip64_internal* zi;
      uInt size_filename;
      uInt size_comment;
      uInt i;
      int err = ZIP_OK;
  
  #    ifdef NOCRYPT
      (crcForCrypting);
      if (password != NULL)
          return ZIP_PARAMERROR;
  #    endif
  
      if (file == NULL)
          return ZIP_PARAMERROR;
  
  #ifdef HAVE_BZIP2
      if ((method!=0) && (method!=Z_DEFLATED) && (method!=Z_BZIP2ED))
        return ZIP_PARAMERROR;
  #else
      if ((method!=0) && (method!=Z_DEFLATED))
        return ZIP_PARAMERROR;
  #endif
  
      zi = (zip64_internal*)file;
  
      if (zi->in_opened_file_inzip == 1)
      {
          err = zipCloseFileInZip (file);
          if (err != ZIP_OK)
              return err;
      }
  
      if (filename==NULL)
          filename="-";
  
      if (comment==NULL)
          size_comment = 0;
      else
          size_comment = (uInt)strlen(comment);
  
      size_filename = (uInt)strlen(filename);
  
      if (zipfi == NULL)
          zi->ci.dosDate = 0;
      else
      {
          if (zipfi->dosDate != 0)
              zi->ci.dosDate = zipfi->dosDate;
          else
            zi->ci.dosDate = zip64local_TmzDateToDosDate(&zipfi->tmz_date);
      }
  
      zi->ci.flag = flagBase;
      if ((level==8) || (level==9))
        zi->ci.flag |= 2;
      if (level==2)
        zi->ci.flag |= 4;
      if (level==1)
        zi->ci.flag |= 6;
      if (password != NULL)
        zi->ci.flag |= 1;
  
      zi->ci.crc32 = 0;
      zi->ci.method = method;
      zi->ci.encrypt = 0;
      zi->ci.stream_initialised = 0;
      zi->ci.pos_in_buffered_data = 0;
      zi->ci.raw = raw;
      zi->ci.pos_local_header = ZTELL64(zi->z_filefunc,zi->filestream);
  
      zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + size_extrafield_global + size_comment;
      zi->ci.size_centralExtraFree = 32; // Extra space we have reserved in case we need to add ZIP64 extra info data
  
      zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->ci.size_centralExtraFree);
  
      zi->ci.size_centralExtra = size_extrafield_global;
      zip64local_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
      /* version info */
      zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)versionMadeBy,2);
      zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
      zip64local_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
      zip64local_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
      zip64local_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
      zip64local_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
      zip64local_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
      zip64local_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
      zip64local_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
      zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
      zip64local_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
      zip64local_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
  
      if (zipfi==NULL)
          zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
      else
          zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
  
      if (zipfi==NULL)
          zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
      else
          zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
  
      if(zi->ci.pos_local_header >= 0xffffffff)
        zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)0xffffffff,4);
      else
        zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header - zi->add_position_when_writing_offset,4);
  
      for (i=0;i<size_filename;i++)
          *(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);
  
      for (i=0;i<size_extrafield_global;i++)
          *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
                *(((const char*)extrafield_global)+i);
  
      for (i=0;i<size_comment;i++)
          *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
                size_extrafield_global+i) = *(comment+i);
      if (zi->ci.central_header == NULL)
          return ZIP_INTERNALERROR;
  
      zi->ci.zip64 = zip64;
      zi->ci.totalCompressedData = 0;
      zi->ci.totalUncompressedData = 0;
      zi->ci.pos_zip64extrainfo = 0;
  
      err = Write_LocalFileHeader(zi, filename, size_extrafield_local, extrafield_local);
  
  #ifdef HAVE_BZIP2
      zi->ci.bstream.avail_in = (uInt)0;
      zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
      zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
      zi->ci.bstream.total_in_hi32 = 0;
      zi->ci.bstream.total_in_lo32 = 0;
      zi->ci.bstream.total_out_hi32 = 0;
      zi->ci.bstream.total_out_lo32 = 0;
  #endif
  
      zi->ci.stream.avail_in = (uInt)0;
      zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
      zi->ci.stream.next_out = zi->ci.buffered_data;
      zi->ci.stream.total_in = 0;
      zi->ci.stream.total_out = 0;
      zi->ci.stream.data_type = Z_BINARY;
  
  #ifdef HAVE_BZIP2
      if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED || zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
  #else
      if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
  #endif
      {
          if(zi->ci.method == Z_DEFLATED)
          {
            zi->ci.stream.zalloc = (alloc_func)0;
            zi->ci.stream.zfree = (free_func)0;
            zi->ci.stream.opaque = (voidpf)0;
  
            if (windowBits>0)
                windowBits = -windowBits;
  
            err = deflateInit2(&zi->ci.stream, level, Z_DEFLATED, windowBits, memLevel, strategy);
  
            if (err==Z_OK)
                zi->ci.stream_initialised = Z_DEFLATED;
          }
          else if(zi->ci.method == Z_BZIP2ED)
          {
  #ifdef HAVE_BZIP2
              // Init BZip stuff here
            zi->ci.bstream.bzalloc = 0;
            zi->ci.bstream.bzfree = 0;
            zi->ci.bstream.opaque = (voidpf)0;
  
            err = BZ2_bzCompressInit(&zi->ci.bstream, level, 0,35);
            if(err == BZ_OK)
              zi->ci.stream_initialised = Z_BZIP2ED;
  #endif
          }
  
      }
  
  #    ifndef NOCRYPT
      zi->ci.crypt_header_size = 0;
      if ((err==Z_OK) && (password != NULL))
      {
          unsigned char bufHead[RAND_HEAD_LEN];
          unsigned int sizeHead;
          zi->ci.encrypt = 1;
          zi->ci.pcrc_32_tab = get_crc_table();
          /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
  
          sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
          zi->ci.crypt_header_size = sizeHead;
  
          if (ZWRITE64(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
                  err = ZIP_ERRNO;
      }
  #    endif
  
      if (err==Z_OK)
          zi->in_opened_file_inzip = 1;
      return err;
  }
  
  extern int ZEXPORT zipOpenNewFileInZip4 (zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                           const void* extrafield_local, uInt size_extrafield_local,
                                           const void* extrafield_global, uInt size_extrafield_global,
                                           const char* comment, int method, int level, int raw,
                                           int windowBits,int memLevel, int strategy,
                                           const char* password, uLong crcForCrypting,
                                           uLong versionMadeBy, uLong flagBase)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   windowBits, memLevel, strategy,
                                   password, crcForCrypting, versionMadeBy, flagBase, 0);
  }
  
  extern int ZEXPORT zipOpenNewFileInZip3 (zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                           const void* extrafield_local, uInt size_extrafield_local,
                                           const void* extrafield_global, uInt size_extrafield_global,
                                           const char* comment, int method, int level, int raw,
                                           int windowBits,int memLevel, int strategy,
                                           const char* password, uLong crcForCrypting)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   windowBits, memLevel, strategy,
                                   password, crcForCrypting, VERSIONMADEBY, 0, 0);
  }
  
  extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                           const void* extrafield_local, uInt size_extrafield_local,
                                           const void* extrafield_global, uInt size_extrafield_global,
                                           const char* comment, int method, int level, int raw,
                                           int windowBits,int memLevel, int strategy,
                                           const char* password, uLong crcForCrypting, int zip64)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   windowBits, memLevel, strategy,
                                   password, crcForCrypting, VERSIONMADEBY, 0, zip64);
  }
  
  extern int ZEXPORT zipOpenNewFileInZip2(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                          const void* extrafield_local, uInt size_extrafield_local,
                                          const void* extrafield_global, uInt size_extrafield_global,
                                          const char* comment, int method, int level, int raw)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, 0);
  }
  
  extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                          const void* extrafield_local, uInt size_extrafield_local,
                                          const void* extrafield_global, uInt size_extrafield_global,
                                          const char* comment, int method, int level, int raw, int zip64)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, zip64);
  }
  
  extern int ZEXPORT zipOpenNewFileInZip64 (zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                          const void* extrafield_local, uInt size_extrafield_local,
                                          const void*extrafield_global, uInt size_extrafield_global,
                                          const char* comment, int method, int level, int zip64)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, 0,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, zip64);
  }
  
  extern int ZEXPORT zipOpenNewFileInZip (zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                          const void* extrafield_local, uInt size_extrafield_local,
                                          const void*extrafield_global, uInt size_extrafield_global,
                                          const char* comment, int method, int level)
  {
      return zipOpenNewFileInZip4_64 (file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, 0,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, 0);
  }
  
  local int zip64FlushWriteBuffer(zip64_internal* zi)
  {
      int err=ZIP_OK;
  
      if (zi->ci.encrypt != 0)
      {
  #ifndef NOCRYPT
          uInt i;
          int t;
          for (i=0;i<zi->ci.pos_in_buffered_data;i++)
              zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab, zi->ci.buffered_data[i],t);
  #endif
      }
  
      if (ZWRITE64(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data) != zi->ci.pos_in_buffered_data)
        err = ZIP_ERRNO;
  
      zi->ci.totalCompressedData += zi->ci.pos_in_buffered_data;
  
  #ifdef HAVE_BZIP2
      if(zi->ci.method == Z_BZIP2ED)
      {
        zi->ci.totalUncompressedData += zi->ci.bstream.total_in_lo32;
        zi->ci.bstream.total_in_lo32 = 0;
        zi->ci.bstream.total_in_hi32 = 0;
      }
      else
  #endif
      {
        zi->ci.totalUncompressedData += zi->ci.stream.total_in;
        zi->ci.stream.total_in = 0;
      }
  
  
      zi->ci.pos_in_buffered_data = 0;
  
      return err;
  }
  
  extern int ZEXPORT zipWriteInFileInZip (zipFile file,const void* buf,unsigned int len)
  {
      zip64_internal* zi;
      int err=ZIP_OK;
  
      if (file == NULL)
          return ZIP_PARAMERROR;
      zi = (zip64_internal*)file;
  
      if (zi->in_opened_file_inzip == 0)
          return ZIP_PARAMERROR;
  
      zi->ci.crc32 = crc32(zi->ci.crc32,buf,(uInt)len);
  
  #ifdef HAVE_BZIP2
      if(zi->ci.method == Z_BZIP2ED && (!zi->ci.raw))
      {
        zi->ci.bstream.next_in = (void*)buf;
        zi->ci.bstream.avail_in = len;
        err = BZ_RUN_OK;
  
        while ((err==BZ_RUN_OK) && (zi->ci.bstream.avail_in>0))
        {
          if (zi->ci.bstream.avail_out == 0)
          {
            if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
              err = ZIP_ERRNO;
            zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
            zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
          }
  
  
          if(err != BZ_RUN_OK)
            break;
  
          if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
          {
            uLong uTotalOutBefore_lo = zi->ci.bstream.total_out_lo32;
  //          uLong uTotalOutBefore_hi = zi->ci.bstream.total_out_hi32;
            err=BZ2_bzCompress(&zi->ci.bstream,  BZ_RUN);
  
            zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore_lo) ;
          }
        }
  
        if(err == BZ_RUN_OK)
          err = ZIP_OK;
      }
      else
  #endif
      {
        zi->ci.stream.next_in = (Bytef*)buf;
        zi->ci.stream.avail_in = len;
  
        while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
        {
            if (zi->ci.stream.avail_out == 0)
            {
                if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
                    err = ZIP_ERRNO;
                zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
                zi->ci.stream.next_out = zi->ci.buffered_data;
            }
  
  
            if(err != ZIP_OK)
                break;
  
            if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
            {
                uLong uTotalOutBefore = zi->ci.stream.total_out;
                err=deflate(&zi->ci.stream,  Z_NO_FLUSH);
                if(uTotalOutBefore > zi->ci.stream.total_out)
                {
                  int bBreak = 0;
                  bBreak++;
                }
  
                zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
            }
            else
            {
                uInt copy_this,i;
                if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
                    copy_this = zi->ci.stream.avail_in;
                else
                    copy_this = zi->ci.stream.avail_out;
  
                for (i = 0; i < copy_this; i++)
                    *(((char*)zi->ci.stream.next_out)+i) =
                        *(((const char*)zi->ci.stream.next_in)+i);
                {
                    zi->ci.stream.avail_in -= copy_this;
                    zi->ci.stream.avail_out-= copy_this;
                    zi->ci.stream.next_in+= copy_this;
                    zi->ci.stream.next_out+= copy_this;
                    zi->ci.stream.total_in+= copy_this;
                    zi->ci.stream.total_out+= copy_this;
                    zi->ci.pos_in_buffered_data += copy_this;
                }
            }
        }// while(...)
      }
  
      return err;
  }
  
  extern int ZEXPORT zipCloseFileInZipRaw (zipFile file, uLong uncompressed_size, uLong crc32)
  {
      return zipCloseFileInZipRaw64 (file, uncompressed_size, crc32);
  }
  
  extern int ZEXPORT zipCloseFileInZipRaw64 (zipFile file, ZPOS64_T uncompressed_size, uLong crc32)
  {
      zip64_internal* zi;
      ZPOS64_T compressed_size;
      uLong invalidValue = 0xffffffff;
      short datasize = 0;
      int err=ZIP_OK;
  
      if (file == NULL)
          return ZIP_PARAMERROR;
      zi = (zip64_internal*)file;
  
      if (zi->in_opened_file_inzip == 0)
          return ZIP_PARAMERROR;
      zi->ci.stream.avail_in = 0;
  
      if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
                  {
                          while (err==ZIP_OK)
                          {
                                  uLong uTotalOutBefore;
                                  if (zi->ci.stream.avail_out == 0)
                                  {
                                          if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
                                                  err = ZIP_ERRNO;
                                          zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
                                          zi->ci.stream.next_out = zi->ci.buffered_data;
                                  }
                                  uTotalOutBefore = zi->ci.stream.total_out;
                                  err=deflate(&zi->ci.stream,  Z_FINISH);
                                  zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
                          }
                  }
      else if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
      {
  #ifdef HAVE_BZIP2
        err = BZ_FINISH_OK;
        while (err==BZ_FINISH_OK)
        {
          uLong uTotalOutBefore;
          if (zi->ci.bstream.avail_out == 0)
          {
            if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
              err = ZIP_ERRNO;
            zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
            zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
          }
          uTotalOutBefore = zi->ci.bstream.total_out_lo32;
          err=BZ2_bzCompress(&zi->ci.bstream,  BZ_FINISH);
          if(err == BZ_STREAM_END)
            err = Z_STREAM_END;
  
          zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore);
        }
  
        if(err == BZ_FINISH_OK)
          err = ZIP_OK;
  #endif
      }
  
      if (err==Z_STREAM_END)
          err=ZIP_OK; /* this is normal */
  
      if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
                  {
          if (zip64FlushWriteBuffer(zi)==ZIP_ERRNO)
              err = ZIP_ERRNO;
                  }
  
      if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
      {
          int tmp_err = deflateEnd(&zi->ci.stream);
          if (err == ZIP_OK)
              err = tmp_err;
          zi->ci.stream_initialised = 0;
      }
  #ifdef HAVE_BZIP2
      else if((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
      {
        int tmperr = BZ2_bzCompressEnd(&zi->ci.bstream);
                          if (err==ZIP_OK)
                                  err = tmperr;
                          zi->ci.stream_initialised = 0;
      }
  #endif
  
      if (!zi->ci.raw)
      {
          crc32 = (uLong)zi->ci.crc32;
          uncompressed_size = zi->ci.totalUncompressedData;
      }
      compressed_size = zi->ci.totalCompressedData;
  
  #    ifndef NOCRYPT
      compressed_size += zi->ci.crypt_header_size;
  #    endif
  
      // update Current Item crc and sizes,
      if(compressed_size >= 0xffffffff || uncompressed_size >= 0xffffffff || zi->ci.pos_local_header >= 0xffffffff)
      {
        /*version Made by*/
        zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)45,2);
        /*version needed*/
        zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)45,2);
  
      }
  
      zip64local_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
  
  
      if(compressed_size >= 0xffffffff)
        zip64local_putValue_inmemory(zi->ci.central_header+20, invalidValue,4); /*compr size*/
      else
        zip64local_putValue_inmemory(zi->ci.central_header+20, compressed_size,4); /*compr size*/
  
      /// set internal file attributes field
      if (zi->ci.stream.data_type == Z_ASCII)
          zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
  
      if(uncompressed_size >= 0xffffffff)
        zip64local_putValue_inmemory(zi->ci.central_header+24, invalidValue,4); /*uncompr size*/
      else
        zip64local_putValue_inmemory(zi->ci.central_header+24, uncompressed_size,4); /*uncompr size*/
  
      // Add ZIP64 extra info field for uncompressed size
      if(uncompressed_size >= 0xffffffff)
        datasize += 8;
  
      // Add ZIP64 extra info field for compressed size
      if(compressed_size >= 0xffffffff)
        datasize += 8;
  
      // Add ZIP64 extra info field for relative offset to local file header of current file
      if(zi->ci.pos_local_header >= 0xffffffff)
        datasize += 8;
  
      if(datasize > 0)
      {
        char* p = NULL;
  
        if((uLong)(datasize + 4) > zi->ci.size_centralExtraFree)
        {
          // we can not write more data to the buffer that we have room for.
          return ZIP_BADZIPFILE;
        }
  
        p = zi->ci.central_header + zi->ci.size_centralheader;
  
        // Add Extra Information Header for 'ZIP64 information'
        zip64local_putValue_inmemory(p, 0x0001, 2); // HeaderID
        p += 2;
        zip64local_putValue_inmemory(p, datasize, 2); // DataSize
        p += 2;
  
        if(uncompressed_size >= 0xffffffff)
        {
          zip64local_putValue_inmemory(p, uncompressed_size, 8);
          p += 8;
        }
  
        if(compressed_size >= 0xffffffff)
        {
          zip64local_putValue_inmemory(p, compressed_size, 8);
          p += 8;
        }
  
        if(zi->ci.pos_local_header >= 0xffffffff)
        {
          zip64local_putValue_inmemory(p, zi->ci.pos_local_header, 8);
          p += 8;
        }
  
        // Update how much extra free space we got in the memory buffer
        // and increase the centralheader size so the new ZIP64 fields are included
        // ( 4 below is the size of HeaderID and DataSize field )
        zi->ci.size_centralExtraFree -= datasize + 4;
        zi->ci.size_centralheader += datasize + 4;
  
        // Update the extra info size field
        zi->ci.size_centralExtra += datasize + 4;
        zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)zi->ci.size_centralExtra,2);
      }
  
      if (err==ZIP_OK)
          err = add_data_in_datablock(&zi->central_dir, zi->ci.central_header, (uLong)zi->ci.size_centralheader);
  
      free(zi->ci.central_header);
  
      if (err==ZIP_OK)
      {
          // Update the LocalFileHeader with the new values.
  
          ZPOS64_T cur_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream);
  
          if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
              err = ZIP_ERRNO;
  
          if (err==ZIP_OK)
              err = zip64local_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
  
          if(uncompressed_size >= 0xffffffff || compressed_size >= 0xffffffff )
          {
            if(zi->ci.pos_zip64extrainfo > 0)
            {
              // Update the size in the ZIP64 extended field.
              if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_zip64extrainfo + 4,ZLIB_FILEFUNC_SEEK_SET)!=0)
                err = ZIP_ERRNO;
  
              if (err==ZIP_OK) /* compressed size, unknown */
                err = zip64local_putValue(&zi->z_filefunc, zi->filestream, uncompressed_size, 8);
  
              if (err==ZIP_OK) /* uncompressed size, unknown */
                err = zip64local_putValue(&zi->z_filefunc, zi->filestream, compressed_size, 8);
            }
            else
                err = ZIP_BADZIPFILE; // Caller passed zip64 = 0, so no room for zip64 info -> fatal
          }
          else
          {
            if (err==ZIP_OK) /* compressed size, unknown */
                err = zip64local_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
  
            if (err==ZIP_OK) /* uncompressed size, unknown */
                err = zip64local_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
          }
  
          if (ZSEEK64(zi->z_filefunc,zi->filestream, cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
              err = ZIP_ERRNO;
      }
  
      zi->number_entry ++;
      zi->in_opened_file_inzip = 0;
  
      return err;
  }
  
  extern int ZEXPORT zipCloseFileInZip (zipFile file)
  {
      return zipCloseFileInZipRaw (file,0,0);
  }
  
  int Write_Zip64EndOfCentralDirectoryLocator(zip64_internal* zi, ZPOS64_T zip64eocd_pos_inzip)
  {
    int err = ZIP_OK;
    ZPOS64_T pos = zip64eocd_pos_inzip - zi->add_position_when_writing_offset;
  
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDLOCHEADERMAGIC,4);
  
    /*num disks*/
      if (err==ZIP_OK) /* number of the disk with the start of the central directory */
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);
  
    /*relative offset*/
      if (err==ZIP_OK) /* Relative offset to the Zip64EndOfCentralDirectory */
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream, pos,8);
  
    /*total disks*/ /* Do not support spawning of disk so always say 1 here*/
      if (err==ZIP_OK) /* number of the disk with the start of the central directory */
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)1,4);
  
      return err;
  }
  
  int Write_Zip64EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip)
  {
    int err = ZIP_OK;
  
    uLong Zip64DataSize = 44;
  
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDHEADERMAGIC,4);
  
    if (err==ZIP_OK) /* size of this 'zip64 end of central directory' */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)Zip64DataSize,8); // why ZPOS64_T of this ?
  
    if (err==ZIP_OK) /* version made by */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);
  
    if (err==ZIP_OK) /* version needed */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);
  
    if (err==ZIP_OK) /* number of this disk */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);
  
    if (err==ZIP_OK) /* number of the disk with the start of the central directory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);
  
    if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
      err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);
  
    if (err==ZIP_OK) /* total number of entries in the central dir */
      err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);
  
    if (err==ZIP_OK) /* size of the central directory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)size_centraldir,8);
  
    if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */
    {
      ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (ZPOS64_T)pos,8);
    }
    return err;
  }
  int Write_EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip)
  {
    int err = ZIP_OK;
  
    /*signature*/
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
  
    if (err==ZIP_OK) /* number of this disk */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
  
    if (err==ZIP_OK) /* number of the disk with the start of the central directory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
  
    if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
    {
      {
        if(zi->number_entry >= 0xFFFF)
          err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record
        else
          err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
      }
    }
  
    if (err==ZIP_OK) /* total number of entries in the central dir */
    {
      if(zi->number_entry >= 0xFFFF)
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record
      else
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
    }
  
    if (err==ZIP_OK) /* size of the central directory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);
  
    if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */
    {
      ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
      if(pos >= 0xffffffff)
      {
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)0xffffffff,4);
      }
      else
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)(centraldir_pos_inzip - zi->add_position_when_writing_offset),4);
    }
  
     return err;
  }
  
  int Write_GlobalComment(zip64_internal* zi, const char* global_comment)
  {
    int err = ZIP_OK;
    uInt size_global_comment = 0;
  
    if(global_comment != NULL)
      size_global_comment = (uInt)strlen(global_comment);
  
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
  
    if (err == ZIP_OK && size_global_comment > 0)
    {
      if (ZWRITE64(zi->z_filefunc,zi->filestream, global_comment, size_global_comment) != size_global_comment)
        err = ZIP_ERRNO;
    }
    return err;
  }
  
  extern int ZEXPORT zipClose (zipFile file, const char* global_comment)
  {
      zip64_internal* zi;
      int err = 0;
      uLong size_centraldir = 0;
      ZPOS64_T centraldir_pos_inzip;
      ZPOS64_T pos;
  
      if (file == NULL)
          return ZIP_PARAMERROR;
  
      zi = (zip64_internal*)file;
  
      if (zi->in_opened_file_inzip == 1)
      {
          err = zipCloseFileInZip (file);
      }
  
  #ifndef NO_ADDFILEINEXISTINGZIP
      if (global_comment==NULL)
          global_comment = zi->globalcomment;
  #endif
  
      centraldir_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream);
  
      if (err==ZIP_OK)
      {
          linkedlist_datablock_internal* ldi = zi->central_dir.first_block;
          while (ldi!=NULL)
          {
              if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
              {
                  if (ZWRITE64(zi->z_filefunc,zi->filestream, ldi->data, ldi->filled_in_this_block) != ldi->filled_in_this_block)
                      err = ZIP_ERRNO;
              }
  
              size_centraldir += ldi->filled_in_this_block;
              ldi = ldi->next_datablock;
          }
      }
      free_linkedlist(&(zi->central_dir));
  
      pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
      if(pos >= 0xffffffff || zi->number_entry > 0xFFFF)
      {
        ZPOS64_T Zip64EOCDpos = ZTELL64(zi->z_filefunc,zi->filestream);
        Write_Zip64EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip);
  
        Write_Zip64EndOfCentralDirectoryLocator(zi, Zip64EOCDpos);
      }
  
      if (err==ZIP_OK)
        err = Write_EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip);
  
      if(err == ZIP_OK)
        err = Write_GlobalComment(zi, global_comment);
  
      if (ZCLOSE64(zi->z_filefunc,zi->filestream) != 0)
          if (err == ZIP_OK)
              err = ZIP_ERRNO;
  
  #ifndef NO_ADDFILEINEXISTINGZIP
      TRYFREE(zi->globalcomment);
  #endif
      TRYFREE(zi);
  
      return err;
  }
  
  extern int ZEXPORT zipRemoveExtraInfoBlock (char* pData, int* dataLen, short sHeader)
  {
    char* p = pData;
    int size = 0;
    char* pNewHeader;
    char* pTmp;
    short header;
    short dataSize;
  
    int retVal = ZIP_OK;
  
    if(pData == NULL || *dataLen < 4)
      return ZIP_PARAMERROR;
  
    pNewHeader = (char*)ALLOC(*dataLen);
    pTmp = pNewHeader;
  
    while(p < (pData + *dataLen))
    {
      header = *(short*)p;
      dataSize = *(((short*)p)+1);
  
      if( header == sHeader ) // Header found.
      {
        p += dataSize + 4; // skip it. do not copy to temp buffer
      }
      else
      {
        // Extra Info block should not be removed, So copy it to the temp buffer.
        memcpy(pTmp, p, dataSize + 4);
        p += dataSize + 4;
        size += dataSize + 4;
      }
  
    }
  
    if(size < *dataLen)
    {
      // clean old extra info block.
      memset(pData,0, *dataLen);
  
      // copy the new extra info block over the old
      if(size > 0)
        memcpy(pData, pNewHeader, size);
  
      // set the new extra info size
      *dataLen = size;
  
      retVal = ZIP_OK;
    }
    else
      retVal = ZIP_ERRNO;
  
    TRYFREE(pNewHeader);
  
    return retVal;
  }
  