/* zip.c -- IO on .zip files using zlib
   Version 1.1, February 14h, 2010
   part of the MiniZip project

   Copyright (C) 1998-2010 Gilles Vollant
     http://www.winimage.com/zLibDll/minizip.html
   Modifications for Zip64 support
     Copyright (C) 2009-2010 Mathias Svensson
     http://result42.com
   Modifications for AES, PKWARE disk spanning
     Copyright (C) 2010-2014 Nathan Moinvaziri

   This program is distributed under the terms of the same license as zlib.
   See the accompanying LICENSE file for the full text of the license.
*/

#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

#ifdef HAVE_AES
#  define AES_METHOD          (99)
#  define AES_PWVERIFYSIZE    (2)
#  define AES_AUTHCODESIZE    (10)
#  define AES_MAXSALTLENGTH   (16)
#  define AES_VERSION         (0x0001)
#  define AES_ENCRYPTIONMODE  (0x03)

#  include "aes/aes.h"
#  include "aes/fileenc.h"
#  include "aes/prng.h"
#  include "aes/entropy.h"
#endif

#ifndef NOCRYPT
#  define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
#  include "crypt.h"
#endif

#ifndef local
#  define local static
#endif
/* compile with -Dlocal if your debugger can't find static symbols */

#define SIZEDATA_INDATABLOCK        (4096-(4*4))

#define DISKHEADERMAGIC             (0x08074b50)
#define LOCALHEADERMAGIC            (0x04034b50)
#define CENTRALHEADERMAGIC          (0x02014b50)
#define ENDHEADERMAGIC              (0x06054b50)
#define ZIP64ENDHEADERMAGIC         (0x06064b50)
#define ZIP64ENDLOCHEADERMAGIC      (0x07064b50)

#define FLAG_LOCALHEADER_OFFSET     (0x06)
#define CRC_LOCALHEADER_OFFSET      (0x0e)

#define SIZECENTRALHEADER           (0x2e) /* 46 */
#define SIZECENTRALHEADERLOCATOR    (0x14) /* 20 */
#define SIZECENTRALDIRITEM          (0x2e)
#define SIZEZIPLOCALHEADER          (0x1e)

#ifndef BUFREADCOMMENT
#  define BUFREADCOMMENT            (0x400)
#endif
#ifndef VERSIONMADEBY
#  define VERSIONMADEBY             (0x0) /* platform dependent */
#endif

#ifndef Z_BUFSIZE
#  define Z_BUFSIZE (64*1024)
#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

/* NOT sure that this work on ALL platform */
#define MAKEULONG64(a, b) ((ZPOS64_T)(((unsigned long)(a)) | ((ZPOS64_T)((unsigned long)(b))) << 32))

#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";

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
#ifdef HAVE_AES
    fcrypt_ctx aes_ctx;
    prng_ctx aes_rng[1];
#endif
    int  stream_initialised;        /* 1 is stream is initialized */
    uInt pos_in_buffered_data;      /* last written byte in buffered_data */

    ZPOS64_T pos_local_header;      /* offset of the local header of the file currently 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 central header but that are not used */
    uLong size_comment;
    uLong flag;                     /* flag of the file currently writing */

    int  method;                    /* compression method written to file.*/
    int  compression_method;        /* compression method to use */
    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  zip64;                     /* Add ZIP64 extended information in the extra field */
    uLong number_disk;              /* number of current disk used for spanning ZIP */
    ZPOS64_T pos_zip64extrainfo;
    ZPOS64_T total_compressed;
    ZPOS64_T total_uncompressed;
#ifndef NOCRYPT
    unsigned int keys[3];          /* keys defining the pseudo-random sequence */
    const unsigned int* pcrc_32_tab;
    int crypt_header_size;
#endif
} curfile64_info;

typedef struct
{
    zlib_filefunc64_32_def z_filefunc;
    voidpf filestream;              /* io structure of the zipfile */
    voidpf filestream_with_CD;      /* io structure of the zipfile with the central dir */
    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.*/
    int append;                     /* append mode */
    curfile64_info ci;              /* info on the file currently writing */

    ZPOS64_T begin_pos;             /* position of the beginning of the zipfile */
    ZPOS64_T add_position_when_writting_offset;
    ZPOS64_T number_entry;
    ZPOS64_T disk_size;             /* size of each disk */
    uLong number_disk;              /* number of the current disk, used for spanning ZIP */
    uLong number_disk_with_CD;      /* number the the disk with central dir, used for spanning ZIP */
#ifndef NO_ADDFILEINEXISTINGZIP
    char *globalcomment;
#endif
} zip64_internal;

/* Allocate a new data block */
local linkedlist_datablock_internal* allocate_new_datablock OF(());
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;
}

/* Free data block in linked list */
local void free_datablock OF((linkedlist_datablock_internal* ldi));
local void free_datablock(linkedlist_datablock_internal* ldi)
{
    while (ldi != NULL)
    {
        linkedlist_datablock_internal* ldinext = ldi->next_datablock;
        TRYFREE(ldi);
        ldi = ldinext;
    }
}

/* Initialize linked list */
local void init_linkedlist OF((linkedlist_data* ll));
local void init_linkedlist(linkedlist_data* ll)
{
    ll->first_block = ll->last_block = NULL;
}

/* Free entire linked list and all data blocks */
local void free_linkedlist OF((linkedlist_data* ll));
local void free_linkedlist(linkedlist_data* ll)
{
    free_datablock(ll->first_block);
    ll->first_block = ll->last_block = NULL;
}

/* Add data to linked list data block */
local int add_data_in_datablock OF((linkedlist_data* ll, const void* buf, uLong len));
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;
}

local uLong zip64local_TmzDateToDosDate OF((const tm_zip* ptm));
local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm)
{
    uLong year;
#define zip64local_in_range(min, max, value) ((min) <= (value) && (value) <= (max))
    /* Years supported:
       * [00, 79] (assumed to be between 2000 and 2079)
       * [80, 207] (assumed to be between 1980 and 2107, typical output of old
         software that does 'year-1900' to get a double digit year)
       * [1980, 2107]
       Due to the date format limitations, only years between 1980 and 2107 can be stored.
    */
    if (!(zip64local_in_range(1980, 2107, ptm->tm_year) || zip64local_in_range(0, 207, ptm->tm_year)) ||
        !zip64local_in_range(0, 11, ptm->tm_mon) ||
        !zip64local_in_range(1, 31, ptm->tm_mday) ||
        !zip64local_in_range(0, 23, ptm->tm_hour) ||
        !zip64local_in_range(0, 59, ptm->tm_min) ||
        !zip64local_in_range(0, 59, ptm->tm_sec))
      return 0;
#undef zip64local_in_range

    year = (uLong)ptm->tm_year;
    if (year >= 1980) /* range [1980, 2107] */
        year -= 1980;
    else if (year >= 80) /* range [80, 99] */
        year -= 80;
    else /* range [00, 79] */
        year += 20;

    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));
}

/* 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;

    return ZIP_OK;
}

local ZPOS64_T zip64local_getValue_frommemory OF((void* src, int nbByte));
local ZPOS64_T zip64local_getValue_frommemory (void* src, int nbByte)
{
    ZPOS64_T x = 0;
    unsigned char* buf =(unsigned char*)src;
    int n;
    for (n = 0; n < nbByte; n++) {
        x <<= 8;
        x |= buf[nbByte - n - 1];
    }
    return x;
}

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 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;
    }
    if (ZERROR64(*pzlib_filefunc_def, filestream))
        return ZIP_ERRNO;
    return ZIP_EOF;
}

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;
}

/* Gets the amount of bytes left to write to the current disk for spanning archives */
local int zipGetDiskSizeAvailable OF((zipFile file, ZPOS64_T *size_available));
local int zipGetDiskSizeAvailable(zipFile file, ZPOS64_T *size_available)
{
    zip64_internal* zi;
    ZPOS64_T current_disk_size;

    zi = (zip64_internal*)file;
    ZSEEK64(zi->z_filefunc, zi->filestream, 0, ZLIB_FILEFUNC_SEEK_END);
    current_disk_size = ZTELL64(zi->z_filefunc, zi->filestream);
    *size_available = zi->disk_size - current_disk_size;
    return ZIP_OK;
}

/* Goes to a specific disk number for spanning archives */
local int zipGoToSpecificDisk OF((zipFile file, unsigned long number_disk, int open_existing));
local int zipGoToSpecificDisk(zipFile file, unsigned long number_disk, int open_existing)
{
    zip64_internal* zi;
    int err = ZIP_OK;

    zi = (zip64_internal*)file;
    if (zi->disk_size == 0)
        return err;

    if ((zi->filestream != NULL) && (zi->filestream != zi->filestream_with_CD))
        ZCLOSE64(zi->z_filefunc, zi->filestream);

    zi->filestream = ZOPENDISK64(zi->z_filefunc, zi->filestream_with_CD, number_disk, (open_existing == 1) ?
            (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING) :
            (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE));

    if (zi->filestream == NULL)
        err = ZIP_ERRNO;

    return err;
}

/* Goes to the first disk in a spanned archive */
local int zipGoToFirstDisk OF((zipFile file));
local int zipGoToFirstDisk(zipFile file)
{
    zip64_internal* zi;
    uLong number_disk_next;
    int err = ZIP_OK;

    zi = (zip64_internal*)file;

    if (zi->disk_size == 0)
        return err;
    number_disk_next = 0;
    if (zi->number_disk_with_CD > 0)
        number_disk_next = zi->number_disk_with_CD - 1;
    err = zipGoToSpecificDisk(file, number_disk_next, (zi->append == APPEND_STATUS_ADDINZIP));
    if ((err == ZIP_ERRNO) && (zi->append == APPEND_STATUS_ADDINZIP))
        err = zipGoToSpecificDisk(file, number_disk_next, 0);
    if (err == ZIP_OK)
        zi->number_disk = number_disk_next;
    ZSEEK64(zi->z_filefunc, zi->filestream, 0, ZLIB_FILEFUNC_SEEK_END);
    return err;
}

/* Goes to the next disk in a spanned archive */
local int zipGoToNextDisk OF((zipFile file));
local int zipGoToNextDisk(zipFile file)
{
    zip64_internal* zi;
    ZPOS64_T size_available_in_disk;
    int err = ZIP_OK;
    uLong number_disk_next;

    zi = (zip64_internal*)file;

    if (zi->disk_size == 0)
        return err;

    number_disk_next = zi->number_disk + 1;

    do
    {
        err = zipGoToSpecificDisk(file, number_disk_next, (zi->append == APPEND_STATUS_ADDINZIP));
        if ((err == ZIP_ERRNO) && (zi->append == APPEND_STATUS_ADDINZIP))
            err = zipGoToSpecificDisk(file, number_disk_next, 0);
        if (err != ZIP_OK)
            break;
        err = zipGetDiskSizeAvailable(file, &size_available_in_disk);
        if (err != ZIP_OK)
            break;
        zi->number_disk = number_disk_next;
        zi->number_disk_with_CD = zi->number_disk + 1;

        number_disk_next += 1;
    }
    while (size_available_in_disk <= 0);

    return err;
}

/* 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 file_size;
    ZPOS64_T back_read = 4;
    ZPOS64_T max_back=0xffff; /* maximum size of global comment */
    ZPOS64_T pos_found=0;
    uLong read_size;
    ZPOS64_T read_pos;
    int i;

    buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
    if (buf == NULL)
        return 0;

    if (ZSEEK64(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0)
    {
        TRYFREE(buf);
        return 0;
    }

    file_size = ZTELL64(*pzlib_filefunc_def, filestream);

    if (max_back > file_size)
        max_back = file_size;

    while (back_read < max_back)
    {
        if (back_read + BUFREADCOMMENT > max_back)
            back_read = max_back;
        else
            back_read += BUFREADCOMMENT;

        read_pos = file_size-back_read;
        read_size = ((BUFREADCOMMENT+4) < (file_size-read_pos)) ?
                     (BUFREADCOMMENT+4) : (uLong)(file_size-read_pos);

        if (ZSEEK64(*pzlib_filefunc_def, filestream, read_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
            break;
        if (ZREAD64(*pzlib_filefunc_def, filestream, buf, read_size) != read_size)
            break;

        for (i = (int)read_size-3; (i--) > 0;)
            if ((*(buf+i)) == (ENDHEADERMAGIC & 0xff) &&
                (*(buf+i+1)) == (ENDHEADERMAGIC >> 8 & 0xff) &&
                (*(buf+i+2)) == (ENDHEADERMAGIC >> 16 & 0xff) &&
                (*(buf+i+3)) == (ENDHEADERMAGIC >> 24 & 0xff))
            {
                pos_found = read_pos+i;
                break;
            }

        if (pos_found != 0)
            break;
    }
    TRYFREE(buf);
    return pos_found;
}

/* Locate the Central directory 64 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,
    const ZPOS64_T endcentraloffset));
local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream,
    const ZPOS64_T endcentraloffset)
{
    ZPOS64_T offset;
    uLong uL;

    /* Zip64 end of central directory locator */
    if (ZSEEK64(*pzlib_filefunc_def, filestream, endcentraloffset - SIZECENTRALHEADERLOCATOR, ZLIB_FILEFUNC_SEEK_SET) != 0)
        return 0;

    /* Read locator signature */
    if (zip64local_getLong(pzlib_filefunc_def, filestream, &uL) != ZIP_OK)
        return 0;
    if (uL != ZIP64ENDLOCHEADERMAGIC)
        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;
    /* Relative offset of the zip64 end of central directory record */
    if (zip64local_getLong64(pzlib_filefunc_def, filestream, &offset) != ZIP_OK)
        return 0;
    /* Total number of disks */
    if (zip64local_getLong(pzlib_filefunc_def, filestream, &uL) != ZIP_OK)
        return 0;
    /* Goto end of central directory record */
    if (ZSEEK64(*pzlib_filefunc_def,filestream, offset, ZLIB_FILEFUNC_SEEK_SET) != 0)
        return 0;
    /* The signature */
    if (zip64local_getLong(pzlib_filefunc_def, filestream, &uL) != ZIP_OK)
        return 0;
    if (uL != ZIP64ENDHEADERMAGIC)
        return 0;

    return offset;
}

extern zipFile ZEXPORT zipOpen4(const void *pathname, int append, ZPOS64_T disk_size, const char ** globalcomment,
    zlib_filefunc64_32_def* pzlib_filefunc64_32_def)
{
    zip64_internal ziinit;
    zip64_internal* zi;
#ifndef NO_ADDFILEINEXISTINGZIP
    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 number_entry_CD;           /* total number of entries in the central dir */
    ZPOS64_T number_entry;
    ZPOS64_T central_pos;
    ZPOS64_T size_central_dir_to_read;
    uLong uL;
    uLong size_comment;
    size_t buf_size = SIZEDATA_INDATABLOCK;
    void* buf_read;
#endif
    int err = ZIP_OK;
    int mode;

    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;

    if (append == APPEND_STATUS_CREATE)
        mode = (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE);
    else
        mode = (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING);

    ziinit.filestream = ZOPEN64(ziinit.z_filefunc, pathname, mode);
    if (ziinit.filestream == NULL)
        return NULL;

    if (append == APPEND_STATUS_CREATEAFTER)
    {
        /* Don't support spanning ZIP with APPEND_STATUS_CREATEAFTER */
        if (disk_size > 0)
            return NULL;

        ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END);
    }

    ziinit.filestream_with_CD = ziinit.filestream;
    ziinit.append = append;
    ziinit.number_disk = 0;
    ziinit.number_disk_with_CD = 0;
    ziinit.disk_size = disk_size;
    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_writting_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;
    }

#ifndef NO_ADDFILEINEXISTINGZIP
    /* Add file in a zipfile */
    ziinit.globalcomment = NULL;
    if (append == APPEND_STATUS_ADDINZIP)
    {
        /* Read and Cache Central Directory Records */
        central_pos = zip64local_SearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
        /* Disable to allow appending to empty ZIP archive (must be standard zip, not zip64)
            if (central_pos == 0)
                err = ZIP_ERRNO;
        */

        if (err == ZIP_OK)
        {
            /* Read end of central directory info */
            if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET) != 0)
                err = ZIP_ERRNO;

            /* The signature, already checked */
            if (zip64local_getLong(&ziinit.z_filefunc, ziinit.filestream, &uL) != ZIP_OK)
                err = ZIP_ERRNO;
            /* Number of this disk */
            if (zip64local_getShort(&ziinit.z_filefunc, ziinit.filestream, &ziinit.number_disk) != ZIP_OK)
                err = ZIP_ERRNO;
            /* Number of the disk with the start of the central directory */
            if (zip64local_getShort(&ziinit.z_filefunc, ziinit.filestream, &ziinit.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(&ziinit.z_filefunc, ziinit.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(&ziinit.z_filefunc, ziinit.filestream, &uL) != ZIP_OK)
                err = ZIP_ERRNO;
            else
                number_entry_CD = uL;
            if (number_entry_CD!=number_entry)
                err = ZIP_BADZIPFILE;
            /* Size of the central directory */
            size_central_dir = 0;
            if (zip64local_getLong(&ziinit.z_filefunc, ziinit.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(&ziinit.z_filefunc, ziinit.filestream, &uL) != ZIP_OK)
                err = ZIP_ERRNO;
            else
                offset_central_dir = uL;
            /* Zipfile global comment length */
            if (zip64local_getShort(&ziinit.z_filefunc, ziinit.filestream, &size_comment) != ZIP_OK)
                err = ZIP_ERRNO;

            if ((err == ZIP_OK) && ((number_entry_CD == 0xffff) || (offset_central_dir == 0xffffffff)))
            {
                /* Format should be Zip64, as the central directory or file size is too large */
                central_pos = zip64local_SearchCentralDir64(&ziinit.z_filefunc, ziinit.filestream, central_pos);

                if (central_pos)
                {
                    ZPOS64_T sizeEndOfCentralDirectory;

                    if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
                        err = ZIP_ERRNO;

                    /* The signature, already checked */
                    if (zip64local_getLong(&ziinit.z_filefunc, ziinit.filestream, &uL) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Size of zip64 end of central directory record */
                    if (zip64local_getLong64(&ziinit.z_filefunc, ziinit.filestream, &sizeEndOfCentralDirectory) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Version made by */
                    if (zip64local_getShort(&ziinit.z_filefunc, ziinit.filestream, &uL) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Version needed to extract */
                    if (zip64local_getShort(&ziinit.z_filefunc, ziinit.filestream, &uL) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Number of this disk */
                    if (zip64local_getLong(&ziinit.z_filefunc, ziinit.filestream, &ziinit.number_disk) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Number of the disk with the start of the central directory */
                    if (zip64local_getLong(&ziinit.z_filefunc, ziinit.filestream, &ziinit.number_disk_with_CD) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Total number of entries in the central directory on this disk */
                    if (zip64local_getLong64(&ziinit.z_filefunc, ziinit.filestream, &number_entry) != ZIP_OK)
                        err = ZIP_ERRNO;
                    /* Total number of entries in the central directory */
                    if (zip64local_getLong64(&ziinit.z_filefunc, ziinit.filestream, &number_entry_CD) != ZIP_OK)
                        err = ZIP_ERRNO;
                    if (number_entry_CD!=number_entry)
                        err = ZIP_BADZIPFILE;
                    /* Size of the central directory */
                    if (zip64local_getLong64(&ziinit.z_filefunc, ziinit.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(&ziinit.z_filefunc, ziinit.filestream, &offset_central_dir) != ZIP_OK)
                        err = ZIP_ERRNO;
                }
                else
                    err = ZIP_BADZIPFILE;
             }
        }

        if ((err == ZIP_OK) && (central_pos<offset_central_dir+size_central_dir))
            err = ZIP_BADZIPFILE;

        if (err != ZIP_OK)
        {
            ZCLOSE64(ziinit.z_filefunc, ziinit.filestream);
            TRYFREE(zi);
            return NULL;
        }

        if (size_comment > 0)
        {
            ziinit.globalcomment = (char*)ALLOC(size_comment+1);
            if (ziinit.globalcomment)
            {
                size_comment = ZREAD64(ziinit.z_filefunc, ziinit.filestream, ziinit.globalcomment, size_comment);
                ziinit.globalcomment[size_comment] = 0;
            }
        }

        byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir);
        ziinit.add_position_when_writting_offset = byte_before_the_zipfile;

        /* Store central directory in memory */
        size_central_dir_to_read = size_central_dir;
        buf_size = SIZEDATA_INDATABLOCK;
        buf_read = (void*)ALLOC(buf_size);

        if (ZSEEK64(ziinit.z_filefunc, ziinit.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(ziinit.z_filefunc, ziinit.filestream, buf_read, (uLong)read_this) != read_this)
                err = ZIP_ERRNO;

            if (err == ZIP_OK)
                err = add_data_in_datablock(&ziinit.central_dir, buf_read, (uLong)read_this);

            size_central_dir_to_read -= read_this;
        }
        TRYFREE(buf_read);

        ziinit.begin_pos = byte_before_the_zipfile;
        ziinit.number_entry = number_entry_CD;

        if (ZSEEK64(ziinit.z_filefunc, ziinit.filestream,
                offset_central_dir+byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
            err = ZIP_ERRNO;
    }

    if (globalcomment)
        *globalcomment = ziinit.globalcomment;
#endif

    if (err != ZIP_OK)
    {
#ifndef NO_ADDFILEINEXISTINGZIP
        TRYFREE(ziinit.globalcomment);
#endif
        TRYFREE(zi);
        return NULL;
    }

    *zi = ziinit;
    zipGoToFirstDisk((zipFile)zi);
    return(zipFile)zi;
}

extern zipFile ZEXPORT zipOpen2(const char *pathname, int append, const char ** 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 zipOpen4(pathname, append, 0, globalcomment, &zlib_filefunc64_32_def_fill);
    }
    return zipOpen4(pathname, append, 0, globalcomment, NULL);
}

extern zipFile ZEXPORT zipOpen2_64(const void *pathname, int append, const char ** 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 zipOpen4(pathname, append, 0, globalcomment, &zlib_filefunc64_32_def_fill);
    }
    return zipOpen4(pathname, append, 0, globalcomment, NULL);
}

extern zipFile ZEXPORT zipOpen3(const char *pathname, int append, ZPOS64_T disk_size, const char ** 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 zipOpen4(pathname, append, disk_size, globalcomment, &zlib_filefunc64_32_def_fill);
    }
    return zipOpen4(pathname, append, disk_size, globalcomment, NULL);
}

extern zipFile ZEXPORT zipOpen3_64(const void *pathname, int append, ZPOS64_T disk_size, const char ** 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 zipOpen4(pathname, append, disk_size, globalcomment, &zlib_filefunc64_32_def_fill);
    }
    return zipOpen4(pathname, append, disk_size, globalcomment, NULL);
}

extern zipFile ZEXPORT zipOpen(const char* pathname, int append)
{
    return zipOpen3((const void*)pathname,append,0,NULL,NULL);
}

extern zipFile ZEXPORT zipOpen64(const void* pathname, int append)
{
    return zipOpen3(pathname,append,0,NULL,NULL);
}

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 = 0;
    uInt i;
    int err = ZIP_OK;
    ZPOS64_T size_available;
    ZPOS64_T size_needed;

#ifdef NOCRYPT
    (crcForCrypting);
    if (password != NULL)
        return ZIP_PARAMERROR;
#endif

    if (file == NULL)
        return ZIP_PARAMERROR;

    if ((method != 0) &&
#ifdef HAVE_BZIP2
        (method != Z_BZIP2ED) &&
#endif
        (method != Z_DEFLATED))
        return ZIP_PARAMERROR;

    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 = (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.method = method;
    zi->ci.compression_method = method;
    zi->ci.crc32 = 0;
    zi->ci.stream_initialised = 0;
    zi->ci.pos_in_buffered_data = 0;
    zi->ci.raw = raw;
    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;
#ifdef HAVE_AES
        zi->ci.method = AES_METHOD;
#endif
    }

    if (zi->disk_size > 0)
    {
        if ((zi->number_disk == 0) && (zi->number_entry == 0))
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)DISKHEADERMAGIC, 4);

        /* Make sure enough space available on current disk for local header */
        zipGetDiskSizeAvailable((zipFile)zi, &size_available);
        size_needed = 30 + size_filename + size_extrafield_local;
        if (zi->ci.zip64)
            size_needed += 20;
#ifdef HAVE_AES
        if (zi->ci.method == AES_METHOD)
            size_needed += 11;
#endif
        if (size_available < size_needed)
            zipGoToNextDisk((zipFile)zi);
    }

    zi->ci.pos_local_header = ZTELL64(zi->z_filefunc, zi->filestream);
    zi->ci.size_comment = size_comment;
    zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + size_extrafield_global;
    zi->ci.size_centralextra = size_extrafield_global;
    zi->ci.size_centralextrafree = 32; /* Extra space reserved for ZIP64 extra info */
#ifdef HAVE_AES
    if (zi->ci.method == AES_METHOD)
        zi->ci.size_centralextrafree += 11; /* Extra space reserved for AES extra info */
#endif
    zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->ci.size_centralextrafree + size_comment);
    zi->ci.number_disk = zi->number_disk;

    /* Write central directory header */
    zip64local_putValue_inmemory(zi->ci.central_header, (uLong)CENTRALHEADERMAGIC, 4);
    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)zi->ci.number_disk, 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_writting_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];
    /* Store comment at the end for later repositioning */
    for (i = 0; i < size_comment; i++)
        zi->ci.central_header[zi->ci.size_centralheader+
            zi->ci.size_centralextrafree+i] = comment[i];

    if (zi->ci.central_header == NULL)
        return ZIP_INTERNALERROR;

    zi->ci.zip64 = zip64;
    zi->ci.total_compressed = 0;
    zi->ci.total_uncompressed = 0;
    zi->ci.pos_zip64extrainfo = 0;

    /* Write the local header */
    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) /* uncompressed size, unknown */
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)0xFFFFFFFF, 4);
        else /* uncompressed size, unknown */
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)0, 4);
    }
    if (err == ZIP_OK)
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)size_filename, 2);
    if (err == ZIP_OK)
    {
        ZPOS64_T size_extrafield = size_extrafield_local;
        if (zi->ci.zip64)
            size_extrafield += 20;
#ifdef HAVE_AES
        if (zi->ci.method == AES_METHOD)
            size_extrafield += 11;
#endif
        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;
    }

    /* Write the Zip64 extended info */
    if ((err == ZIP_OK) && (zi->ci.zip64))
    {
        short headerid = 1;
        short datasize = 16;
        ZPOS64_T compressed_size = 0;
        ZPOS64_T uncompressed_size = 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)uncompressed_size, 8);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)compressed_size, 8);
    }
#ifdef HAVE_AES
    /* Write the AES extended info */
    if ((err == ZIP_OK) && (zi->ci.method == AES_METHOD))
    {
        int headerid = 0x9901;
        short datasize = 7;

        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, headerid, 2);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, datasize, 2);

        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, AES_VERSION, 2);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, 'A', 1);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, 'E', 1);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, AES_ENCRYPTIONMODE, 1);
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->ci.compression_method, 2);
    }
#endif

#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;

    if ((err == ZIP_OK) && (!zi->ci.raw))
    {
        if (method == Z_DEFLATED)
        {
            zi->ci.stream.zalloc = (alloc_func)0;
            zi->ci.stream.zfree = (free_func)0;
            zi->ci.stream.opaque = (voidpf)zi;

            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 (method == Z_BZIP2ED)
        {
#ifdef HAVE_BZIP2
            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) && ((zi->ci.flag & 1) != 0))
    {
#ifdef HAVE_AES
        if (zi->ci.method == AES_METHOD)
        {
            unsigned char passverify[AES_PWVERIFYSIZE];
            unsigned char saltvalue[AES_MAXSALTLENGTH];
            uInt saltlength;

            if ((AES_ENCRYPTIONMODE < 1) || (AES_ENCRYPTIONMODE > 3))
                return Z_ERRNO;

            saltlength = SALT_LENGTH(AES_ENCRYPTIONMODE);

            prng_init(entropy_fun, zi->ci.aes_rng);
            prng_rand(saltvalue, saltlength, zi->ci.aes_rng);
            prng_end(zi->ci.aes_rng);

            fcrypt_init(AES_ENCRYPTIONMODE, password, strlen(password), saltvalue, passverify, &zi->ci.aes_ctx);

            if (ZWRITE64(zi->z_filefunc, zi->filestream, saltvalue, saltlength) != saltlength)
                err = ZIP_ERRNO;
            if (ZWRITE64(zi->z_filefunc, zi->filestream, passverify, AES_PWVERIFYSIZE) != AES_PWVERIFYSIZE)
                err = ZIP_ERRNO;

            zi->ci.crypt_header_size = saltlength + AES_PWVERIFYSIZE + AES_AUTHCODESIZE;
        }
        else
#endif
        {
            unsigned char bufHead[RAND_HEAD_LEN];
            unsigned int sizeHead;

            zi->ci.pcrc_32_tab = (const unsigned int*)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, (unsigned int)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);
}

/* Flushes the write buffer to disk */
local int zip64FlushWriteBuffer OF((zip64_internal* zi));
local int zip64FlushWriteBuffer(zip64_internal* zi)
{
    int err = ZIP_OK;
    uLong written = 0;
    uLong total_written = 0;
    uLong write = 0;
    uLong max_write = 0;
    ZPOS64_T size_available = 0;

    if ((zi->ci.flag & 1) != 0)
    {
#ifndef NOCRYPT
#ifdef HAVE_AES
        if (zi->ci.method == AES_METHOD)
        {
            fcrypt_encrypt(zi->ci.buffered_data, zi->ci.pos_in_buffered_data, &zi->ci.aes_ctx);
        }
        else
#endif
        {
            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
    }

    write = zi->ci.pos_in_buffered_data;

    do
    {
        max_write = write;

        if (zi->disk_size > 0)
        {
            err = zipGetDiskSizeAvailable((zipFile)zi, &size_available);
            if (err != ZIP_OK)
                return err;

            if (size_available == 0)
            {
                err = zipGoToNextDisk((zipFile)zi);
                if (err != ZIP_OK)
                    return err;
            }

            if (size_available < (ZPOS64_T)max_write)
                max_write = (uInt)size_available;
        }

        written = ZWRITE64(zi->z_filefunc, zi->filestream, zi->ci.buffered_data + total_written, max_write);

        if (ZERROR64(zi->z_filefunc, zi->filestream))
        {
            err = ZIP_ERRNO;
            break;
        }

        total_written += written;
        write -= written;
    }
    while (write > 0);

    zi->ci.total_compressed += zi->ci.pos_in_buffered_data;

#ifdef HAVE_BZIP2
    if (zi->ci.compression_method == Z_BZIP2ED)
    {
        zi->ci.total_uncompressed += zi->ci.bstream.total_in_lo32;
        zi->ci.bstream.total_in_lo32 = 0;
        zi->ci.bstream.total_in_hi32 = 0;
    }
    else
#endif
    {
        zi->ci.total_uncompressed += 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.compression_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;
            }
            else
            {
                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.compression_method == Z_DEFLATED) && (!zi->ci.raw))
            {
                uLong total_out_before = zi->ci.stream.total_out;
                err = deflate(&zi->ci.stream, Z_NO_FLUSH);
                zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - total_out_before);
            }
            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;
            }
        }
    }

    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;
    uLong i = 0;
    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.raw)
    {
        if (zi->ci.compression_method == Z_DEFLATED)
        {
            while (err == ZIP_OK)
            {
                uLong total_out_before;
                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;
                }
                total_out_before = zi->ci.stream.total_out;
                err = deflate(&zi->ci.stream, Z_FINISH);
                zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - total_out_before);
            }
        }
        else if (zi->ci.compression_method == Z_BZIP2ED)
        {
#ifdef HAVE_BZIP2
            err = BZ_FINISH_OK;
            while (err == BZ_FINISH_OK)
            {
                uLong total_out_before;
                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;
                }
                total_out_before = 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 - total_out_before);
            }

            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;
    }

#ifdef HAVE_AES
    if (zi->ci.method == AES_METHOD)
    {
        unsigned char authcode[AES_AUTHCODESIZE];

        fcrypt_end(authcode, &zi->ci.aes_ctx);

        if (ZWRITE64(zi->z_filefunc, zi->filestream, authcode, AES_AUTHCODESIZE) != AES_AUTHCODESIZE)
            err = ZIP_ERRNO;
    }
#endif

    if (!zi->ci.raw)
    {
        if (zi->ci.compression_method == Z_DEFLATED)
        {
            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.compression_method == Z_BZIP2ED)
        {
            int tmperr = BZ2_bzCompressEnd(&zi->ci.bstream);
            if (err == ZIP_OK)
                err = tmperr;
            zi->ci.stream_initialised = 0;
        }
#endif

        crc32 = (uLong)zi->ci.crc32;
        uncompressed_size = zi->ci.total_uncompressed;
    }

    compressed_size = zi->ci.total_compressed;
#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)
    {
        /* Do not change "version made by" upper byte since it might have been set by the user */
        uLong versionMadeBy = (uLong)zip64local_getValue_frommemory(zi->ci.central_header+4, 2); /* version made by */
        if ((versionMadeBy & 0xff) < 45)
            zip64local_putValue_inmemory(zi->ci.central_header+4, (uLong)((versionMadeBy & 0xff00) | (uLong)45), 2); /* version made by */
        zip64local_putValue_inmemory(zi->ci.central_header+6, (uLong)45, 2); /* version needed */
    }
    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 */
    if (zi->ci.stream.data_type == Z_ASCII)
        zip64local_putValue_inmemory(zi->ci.central_header+36, (uLong)Z_ASCII, 2); /* internal file attrib */
    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;

    /* Add Extra Information Header for 'ZIP64 information' */
    if (datasize > 0)
    {
        char* p = zi->ci.central_header + zi->ci.size_centralheader;

        if ((uLong)(datasize + 4) > zi->ci.size_centralextrafree)
            return ZIP_BADZIPFILE;

        zip64local_putValue_inmemory(p, 0x0001, 2);
        p += 2;
        zip64local_putValue_inmemory(p, datasize, 2);
        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;
        }

        zi->ci.size_centralextrafree -= datasize + 4;
        zi->ci.size_centralheader += datasize + 4;
        zi->ci.size_centralextra += datasize + 4;

        zip64local_putValue_inmemory(zi->ci.central_header+30, (uLong)zi->ci.size_centralextra, 2);
    }

#ifdef HAVE_AES
    /* Write the AES extended info */
    if (zi->ci.method == AES_METHOD)
    {
        char* p = zi->ci.central_header + zi->ci.size_centralheader;

        datasize = 7;

        if ((uLong)(datasize + 4) > zi->ci.size_centralextrafree)
            return ZIP_BADZIPFILE;

        zip64local_putValue_inmemory(p, 0x9901, 2);
        p += 2;
        zip64local_putValue_inmemory(p, datasize, 2);
        p += 2;
        zip64local_putValue_inmemory(p, AES_VERSION, 2);
        p += 2;
        zip64local_putValue_inmemory(p, 'A', 1);
        p += 1;
        zip64local_putValue_inmemory(p, 'E', 1);
        p += 1;
        zip64local_putValue_inmemory(p, AES_ENCRYPTIONMODE, 1);
        p += 1;
        zip64local_putValue_inmemory(p, zi->ci.compression_method, 2);
        p += 2;

        zi->ci.size_centralextrafree -= datasize + 4;
        zi->ci.size_centralheader += datasize + 4;
        zi->ci.size_centralextra += datasize + 4;

        zip64local_putValue_inmemory(zi->ci.central_header+30, (uLong)zi->ci.size_centralextra, 2);
    }
#endif
    /* Restore comment to correct position */
    for (i = 0; i < zi->ci.size_comment; i++)
        zi->ci.central_header[zi->ci.size_centralheader+i] =
            zi->ci.central_header[zi->ci.size_centralheader+zi->ci.size_centralextrafree+i];
    zi->ci.size_centralheader += zi->ci.size_comment;

    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);
        uLong cur_number_disk = zi->number_disk;

        /* Local file header is stored on previous disk, switch to make edits */
        if (zi->ci.number_disk != cur_number_disk)
            err = zipGoToSpecificDisk(file, zi->ci.number_disk, 1);

        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);
        }

        /* Now switch back again to the disk we were on before */
        if (zi->ci.number_disk != cur_number_disk)
            err = zipGoToSpecificDisk(file, cur_number_disk, 1);

        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);
}

extern int ZEXPORT zipClose(zipFile file, const char* global_comment)
{
    return zipClose_64(file, global_comment);
}

extern int ZEXPORT zipClose_64(zipFile file, const char* global_comment)
{
    return zipClose2_64(file, global_comment, VERSIONMADEBY);
}

extern int ZEXPORT zipClose2_64(zipFile file, const char* global_comment, uLong versionMadeBy)
{
    zip64_internal* zi;
    int err = 0;
    uLong size_centraldir = 0;
    uInt size_global_comment = 0;
    ZPOS64_T centraldir_pos_inzip;
    ZPOS64_T pos = 0;
    uLong write = 0;

    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

    if (zi->filestream != zi->filestream_with_CD)
    {
        if (ZCLOSE64(zi->z_filefunc, zi->filestream) != 0)
            if (err == ZIP_OK)
                err = ZIP_ERRNO;
        if (zi->disk_size > 0)
            zi->number_disk_with_CD = zi->number_disk + 1;
        zi->filestream = zi->filestream_with_CD;
    }

    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))
            {
                write = ZWRITE64(zi->z_filefunc, zi->filestream, ldi->data, ldi->filled_in_this_block);
                if (write != 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_writting_offset;

    /* Write the ZIP64 central directory header */
    if (pos >= 0xffffffff || zi->number_entry > 0xffff)
    {
        ZPOS64_T zip64eocd_pos_inzip = ZTELL64(zi->z_filefunc, zi->filestream);
        uLong zip64datasize = 44;

        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)ZIP64ENDHEADERMAGIC, 4);

        /* Size of this 'zip64 end of central directory' */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)zip64datasize, 8);
        /* Version made by */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)versionMadeBy, 2);
        /* version needed */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)45, 2);
        /* Number of this disk */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)zi->number_disk_with_CD, 4);
        /* Number of the disk with the start of the central directory */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)zi->number_disk_with_CD, 4);
        /* Total number of entries in the central dir on this disk */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);
        /* Total number of entries in the central dir */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);
        /* Size of the central directory */
        if (err == ZIP_OK)
            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_writting_offset;
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)pos, 8);
        }
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)ZIP64ENDLOCHEADERMAGIC, 4);

        /* Number of the disk with the start of the central directory */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)zi->number_disk_with_CD, 4);
        /* Relative offset to the Zip64EndOfCentralDirectory */
        if (err == ZIP_OK)
        {
            ZPOS64_T pos = zip64eocd_pos_inzip - zi->add_position_when_writting_offset;
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, pos, 8);
        }
        /* Number of the disk with the start of the central directory */
        if (err == ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)zi->number_disk_with_CD+1, 4);
    }

    /* Write the central directory header */

    /* Signature */
    if (err == ZIP_OK)
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)ENDHEADERMAGIC, 4);
    /* Number of this disk */
    if (err == ZIP_OK)
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)zi->number_disk_with_CD, 2);
    /* Number of the disk with the start of the central directory */
    if (err == ZIP_OK)
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)zi->number_disk_with_CD, 2);
    /* Total number of entries in the central dir on this disk */
    if (err == ZIP_OK)
    {
        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);
    }
    /* Total number of entries in the central dir */
    if (err == ZIP_OK)
    {
        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);
    }
    /* Size of the central directory */
    if (err == ZIP_OK)
        err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (uLong)size_centraldir,4);
    /* Offset of start of central directory with respect to the starting disk number */
    if (err == ZIP_OK)
    {
        ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writting_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)pos, 4);
    }

    /* Write global comment */

    if (global_comment != NULL)
        size_global_comment = (uInt)strlen(global_comment);
    if (err == ZIP_OK)
        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;
    }

    if ((ZCLOSE64(zi->z_filefunc, zi->filestream) != 0) && (err == ZIP_OK))
        err = ZIP_ERRNO;

#ifndef NO_ADDFILEINEXISTINGZIP
    TRYFREE(zi->globalcomment);
#endif
    TRYFREE(zi);

    return err;
}
