summaryrefslogtreecommitdiffhomepage
path: root/zlib/contrib/minizip/unzip.c
diff options
context:
space:
mode:
Diffstat (limited to 'zlib/contrib/minizip/unzip.c')
-rw-r--r--zlib/contrib/minizip/unzip.c2125
1 files changed, 0 insertions, 2125 deletions
diff --git a/zlib/contrib/minizip/unzip.c b/zlib/contrib/minizip/unzip.c
deleted file mode 100644
index bcfb941..0000000
--- a/zlib/contrib/minizip/unzip.c
+++ /dev/null
@@ -1,2125 +0,0 @@
-/* unzip.c -- IO for uncompress .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 of Unzip for Zip64
- Copyright (C) 2007-2008 Even Rouault
-
- Modifications for Zip64 support on both zip and unzip
- Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
-
- For more info read MiniZip_info.txt
-
-
- ------------------------------------------------------------------------------------
- Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of
- compatibility with older software. The following is from the original crypt.c.
- Code woven in by Terry Thorsen 1/2003.
-
- Copyright (c) 1990-2000 Info-ZIP. All rights reserved.
-
- See the accompanying file LICENSE, version 2000-Apr-09 or later
- (the contents of which are also included in zip.h) for terms of use.
- If, for some reason, all these files are missing, the Info-ZIP license
- also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
-
- crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h]
-
- The encryption/decryption parts of this source code (as opposed to the
- non-echoing password parts) were originally written in Europe. The
- whole source package can be freely distributed, including from the USA.
- (Prior to January 2000, re-export from the US was a violation of US law.)
-
- This encryption code is a direct transcription of the algorithm from
- Roger Schlafly, described by Phil Katz in the file appnote.txt. This
- file (appnote.txt) is distributed with the PKZIP program (even in the
- version without encryption capabilities).
-
- ------------------------------------------------------------------------------------
-
- Changes in unzip.c
-
- 2007-2008 - Even Rouault - Addition of cpl_unzGetCurrentFileZStreamPos
- 2007-2008 - Even Rouault - Decoration of symbol names unz* -> cpl_unz*
- 2007-2008 - Even Rouault - Remove old C style function prototypes
- 2007-2008 - Even Rouault - Add unzip support for ZIP64
-
- Copyright (C) 2007-2008 Even Rouault
-
-
- Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again).
- Oct-2009 - Mathias Svensson - Fixed problem if uncompressed size was > 4G and compressed size was <4G
- should only read the compressed/uncompressed size from the Zip64 format if
- the size from normal header was 0xFFFFFFFF
- Oct-2009 - Mathias Svensson - Applied some bug fixes from paches recived from Gilles Vollant
- Oct-2009 - Mathias Svensson - Applied support to unzip files with compression mathod BZIP2 (bzip2 lib is required)
- Patch created by Daniel Borca
-
- Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer
-
- Copyright (C) 1998 - 2010 Gilles Vollant, Even Rouault, Mathias Svensson
-
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#ifndef NOUNCRYPT
- #define NOUNCRYPT
-#endif
-
-#include "zlib.h"
-#include "unzip.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 CASESENSITIVITYDEFAULT_NO
-# if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES)
-# define CASESENSITIVITYDEFAULT_NO
-# endif
-#endif
-
-
-#ifndef UNZ_BUFSIZE
-#define UNZ_BUFSIZE (16384)
-#endif
-
-#ifndef UNZ_MAXFILENAMEINZIP
-#define UNZ_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)
-
-
-const char unz_copyright[] =
- " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
-
-/* unz_file_info_interntal contain internal info about a file in zipfile*/
-typedef struct unz_file_info64_internal_s
-{
- ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */
-} unz_file_info64_internal;
-
-
-/* file_in_zip_read_info_s contain internal information about a file in zipfile,
- when reading and decompress it */
-typedef struct
-{
- char *read_buffer; /* internal buffer for compressed data */
- z_stream stream; /* zLib stream structure for inflate */
-
-#ifdef HAVE_BZIP2
- bz_stream bstream; /* bzLib stream structure for bziped */
-#endif
-
- ZPOS64_T pos_in_zipfile; /* position in byte on the zipfile, for fseek*/
- uLong stream_initialised; /* flag set if stream structure is initialised*/
-
- ZPOS64_T offset_local_extrafield;/* offset of the local extra field */
- uInt size_local_extrafield;/* size of the local extra field */
- ZPOS64_T pos_local_extrafield; /* position in the local extra field in read*/
- ZPOS64_T total_out_64;
-
- uLong crc32; /* crc32 of all data uncompressed */
- uLong crc32_wait; /* crc32 we must obtain after decompress all */
- ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */
- ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/
- zlib_filefunc64_32_def z_filefunc;
- voidpf filestream; /* io structore of the zipfile */
- uLong compression_method; /* compression method (0==store) */
- ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
- int raw;
-} file_in_zip64_read_info_s;
-
-
-/* unz64_s contain internal information about the zipfile
-*/
-typedef struct
-{
- zlib_filefunc64_32_def z_filefunc;
- int is64bitOpenFunction;
- voidpf filestream; /* io structore of the zipfile */
- unz_global_info64 gi; /* public global information */
- ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
- ZPOS64_T num_file; /* number of the current file in the zipfile*/
- ZPOS64_T pos_in_central_dir; /* pos of the current file in the central dir*/
- ZPOS64_T current_file_ok; /* flag about the usability of the current file*/
- ZPOS64_T central_pos; /* position of the beginning of the central dir*/
-
- ZPOS64_T size_central_dir; /* size of the central directory */
- ZPOS64_T offset_central_dir; /* offset of start of central directory with
- respect to the starting disk number */
-
- unz_file_info64 cur_file_info; /* public info about the current file in zip*/
- unz_file_info64_internal cur_file_info_internal; /* private info about it*/
- file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current
- file if we are decompressing it */
- int encrypted;
-
- int isZip64;
-
-# ifndef NOUNCRYPT
- unsigned long keys[3]; /* keys defining the pseudo-random sequence */
- const z_crc_t* pcrc_32_tab;
-# endif
-} unz64_s;
-
-
-#ifndef NOUNCRYPT
-#include "crypt.h"
-#endif
-
-/* ===========================================================================
- Read a byte from a gz_stream; update next_in and avail_in. Return EOF
- for end of file.
- IN assertion: the stream s has been successfully opened for reading.
-*/
-
-
-local int unz64local_getByte OF((
- const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- int *pi));
-
-local int unz64local_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 UNZ_OK;
- }
- else
- {
- if (ZERROR64(*pzlib_filefunc_def,filestream))
- return UNZ_ERRNO;
- else
- return UNZ_EOF;
- }
-}
-
-
-/* ===========================================================================
- Reads a long in LSB order from the given gz_stream. Sets
-*/
-local int unz64local_getShort OF((
- const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int unz64local_getShort (const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX)
-{
- uLong x ;
- int i = 0;
- int err;
-
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((uLong)i)<<8;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-local int unz64local_getLong OF((
- const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int unz64local_getLong (const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX)
-{
- uLong x ;
- int i = 0;
- int err;
-
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((uLong)i)<<8;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((uLong)i)<<16;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<24;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-local int unz64local_getLong64 OF((
- const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- ZPOS64_T *pX));
-
-
-local int unz64local_getLong64 (const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream,
- ZPOS64_T *pX)
-{
- ZPOS64_T x ;
- int i = 0;
- int err;
-
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x = (ZPOS64_T)i;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<8;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<16;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<24;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<32;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<40;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<48;
-
- if (err==UNZ_OK)
- err = unz64local_getByte(pzlib_filefunc_def,filestream,&i);
- x |= ((ZPOS64_T)i)<<56;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-/* My own strcmpi / strcasecmp */
-local int strcmpcasenosensitive_internal (const char* fileName1, const char* fileName2)
-{
- for (;;)
- {
- char c1=*(fileName1++);
- char c2=*(fileName2++);
- if ((c1>='a') && (c1<='z'))
- c1 -= 0x20;
- if ((c2>='a') && (c2<='z'))
- c2 -= 0x20;
- if (c1=='\0')
- return ((c2=='\0') ? 0 : -1);
- if (c2=='\0')
- return 1;
- if (c1<c2)
- return -1;
- if (c1>c2)
- return 1;
- }
-}
-
-
-#ifdef CASESENSITIVITYDEFAULT_NO
-#define CASESENSITIVITYDEFAULTVALUE 2
-#else
-#define CASESENSITIVITYDEFAULTVALUE 1
-#endif
-
-#ifndef STRCMPCASENOSENTIVEFUNCTION
-#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal
-#endif
-
-/*
- Compare two filename (fileName1,fileName2).
- If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
- If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
- or strcasecmp)
- If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
- (like 1 on Unix, 2 on Windows)
-
-*/
-extern int ZEXPORT unzStringFileNameCompare (const char* fileName1,
- const char* fileName2,
- int iCaseSensitivity)
-
-{
- if (iCaseSensitivity==0)
- iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE;
-
- if (iCaseSensitivity==1)
- return strcmp(fileName1,fileName2);
-
- return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2);
-}
-
-#ifndef BUFREADCOMMENT
-#define BUFREADCOMMENT (0x400)
-#endif
-
-/*
- Locate the Central directory of a zipfile (at the end, just before
- the global comment)
-*/
-local ZPOS64_T unz64local_SearchCentralDir OF((const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream));
-local ZPOS64_T unz64local_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 Central directory 64 of a zipfile (at the end, just before
- the global comment)
-*/
-local ZPOS64_T unz64local_SearchCentralDir64 OF((
- const zlib_filefunc64_32_def* pzlib_filefunc_def,
- voidpf filestream));
-
-local ZPOS64_T unz64local_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;)
- 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 (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
- return 0;
-
- /* number of the disk with the start of the zip64 end of central directory */
- if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
- return 0;
- if (uL != 0)
- return 0;
-
- /* relative offset of the zip64 end of central directory record */
- if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK)
- return 0;
-
- /* total number of disks */
- if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
- return 0;
- if (uL != 1)
- return 0;
-
- /* Goto end of central directory record */
- if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0)
- return 0;
-
- /* the signature */
- if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
- return 0;
-
- if (uL != 0x06064b50)
- return 0;
-
- return relativeOffset;
-}
-
-/*
- Open a Zip file. path contain the full pathname (by example,
- on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer
- "zlib/zlib114.zip".
- If the zipfile cannot be opened (file doesn't exist or in not valid), the
- return value is NULL.
- Else, the return value is a unzFile Handle, usable with other function
- of this unzip package.
-*/
-local unzFile unzOpenInternal (const void *path,
- zlib_filefunc64_32_def* pzlib_filefunc64_32_def,
- int is64bitOpenFunction)
-{
- unz64_s us;
- unz64_s *s;
- 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_CD; /* total number of entries in
- the central dir
- (same than number_entry on nospan) */
-
- int err=UNZ_OK;
-
- if (unz_copyright[0]!=' ')
- return NULL;
-
- us.z_filefunc.zseek32_file = NULL;
- us.z_filefunc.ztell32_file = NULL;
- if (pzlib_filefunc64_32_def==NULL)
- fill_fopen64_filefunc(&us.z_filefunc.zfile_func64);
- else
- us.z_filefunc = *pzlib_filefunc64_32_def;
- us.is64bitOpenFunction = is64bitOpenFunction;
-
-
-
- us.filestream = ZOPEN64(us.z_filefunc,
- path,
- ZLIB_FILEFUNC_MODE_READ |
- ZLIB_FILEFUNC_MODE_EXISTING);
- if (us.filestream==NULL)
- return NULL;
-
- central_pos = unz64local_SearchCentralDir64(&us.z_filefunc,us.filestream);
- if (central_pos)
- {
- uLong uS;
- ZPOS64_T uL64;
-
- us.isZip64 = 1;
-
- if (ZSEEK64(us.z_filefunc, us.filestream,
- central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=UNZ_ERRNO;
-
- /* the signature, already checked */
- if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* size of zip64 end of central directory record */
- if (unz64local_getLong64(&us.z_filefunc, us.filestream,&uL64)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* version made by */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* version needed to extract */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of this disk */
- if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of the disk with the start of the central directory */
- if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* total number of entries in the central directory on this disk */
- if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* total number of entries in the central directory */
- if (unz64local_getLong64(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- if ((number_entry_CD!=us.gi.number_entry) ||
- (number_disk_with_CD!=0) ||
- (number_disk!=0))
- err=UNZ_BADZIPFILE;
-
- /* size of the central directory */
- if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* offset of start of central directory with respect to the
- starting disk number */
- if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- us.gi.size_comment = 0;
- }
- else
- {
- central_pos = unz64local_SearchCentralDir(&us.z_filefunc,us.filestream);
- if (central_pos==0)
- err=UNZ_ERRNO;
-
- us.isZip64 = 0;
-
- if (ZSEEK64(us.z_filefunc, us.filestream,
- central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=UNZ_ERRNO;
-
- /* the signature, already checked */
- if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of this disk */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of the disk with the start of the central directory */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* total number of entries in the central dir on this disk */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
- us.gi.number_entry = uL;
-
- /* total number of entries in the central dir */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
- number_entry_CD = uL;
-
- if ((number_entry_CD!=us.gi.number_entry) ||
- (number_disk_with_CD!=0) ||
- (number_disk!=0))
- err=UNZ_BADZIPFILE;
-
- /* size of the central directory */
- if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
- us.size_central_dir = uL;
-
- /* offset of start of central directory with respect to the
- starting disk number */
- if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
- us.offset_central_dir = uL;
-
- /* zipfile comment length */
- if (unz64local_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK)
- err=UNZ_ERRNO;
- }
-
- if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
- (err==UNZ_OK))
- err=UNZ_BADZIPFILE;
-
- if (err!=UNZ_OK)
- {
- ZCLOSE64(us.z_filefunc, us.filestream);
- return NULL;
- }
-
- us.byte_before_the_zipfile = central_pos -
- (us.offset_central_dir+us.size_central_dir);
- us.central_pos = central_pos;
- us.pfile_in_zip_read = NULL;
- us.encrypted = 0;
-
-
- s=(unz64_s*)ALLOC(sizeof(unz64_s));
- if( s != NULL)
- {
- *s=us;
- unzGoToFirstFile((unzFile)s);
- }
- return (unzFile)s;
-}
-
-
-extern unzFile ZEXPORT unzOpen2 (const char *path,
- 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 unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 0);
- }
- else
- return unzOpenInternal(path, NULL, 0);
-}
-
-extern unzFile ZEXPORT unzOpen2_64 (const void *path,
- 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 unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 1);
- }
- else
- return unzOpenInternal(path, NULL, 1);
-}
-
-extern unzFile ZEXPORT unzOpen (const char *path)
-{
- return unzOpenInternal(path, NULL, 0);
-}
-
-extern unzFile ZEXPORT unzOpen64 (const void *path)
-{
- return unzOpenInternal(path, NULL, 1);
-}
-
-/*
- Close a ZipFile opened with unzOpen.
- If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
- these files MUST be closed with unzCloseCurrentFile before call unzClose.
- return UNZ_OK if there is no problem. */
-extern int ZEXPORT unzClose (unzFile file)
-{
- unz64_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
-
- if (s->pfile_in_zip_read!=NULL)
- unzCloseCurrentFile(file);
-
- ZCLOSE64(s->z_filefunc, s->filestream);
- TRYFREE(s);
- return UNZ_OK;
-}
-
-
-/*
- Write info about the ZipFile in the *pglobal_info structure.
- No preparation of the structure is needed
- return UNZ_OK if there is no problem. */
-extern int ZEXPORT unzGetGlobalInfo64 (unzFile file, unz_global_info64* pglobal_info)
-{
- unz64_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- *pglobal_info=s->gi;
- return UNZ_OK;
-}
-
-extern int ZEXPORT unzGetGlobalInfo (unzFile file, unz_global_info* pglobal_info32)
-{
- unz64_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- /* to do : check if number_entry is not truncated */
- pglobal_info32->number_entry = (uLong)s->gi.number_entry;
- pglobal_info32->size_comment = s->gi.size_comment;
- return UNZ_OK;
-}
-/*
- Translate date/time from Dos format to tm_unz (readable more easilty)
-*/
-local void unz64local_DosDateToTmuDate (ZPOS64_T ulDosDate, tm_unz* ptm)
-{
- ZPOS64_T uDate;
- uDate = (ZPOS64_T)(ulDosDate>>16);
- ptm->tm_mday = (uInt)(uDate&0x1f) ;
- ptm->tm_mon = (uInt)((((uDate)&0x1E0)/0x20)-1) ;
- ptm->tm_year = (uInt)(((uDate&0x0FE00)/0x0200)+1980) ;
-
- ptm->tm_hour = (uInt) ((ulDosDate &0xF800)/0x800);
- ptm->tm_min = (uInt) ((ulDosDate&0x7E0)/0x20) ;
- ptm->tm_sec = (uInt) (2*(ulDosDate&0x1f)) ;
-}
-
-/*
- Get Info about the current file in the zipfile, with internal only info
-*/
-local int unz64local_GetCurrentFileInfoInternal OF((unzFile file,
- unz_file_info64 *pfile_info,
- unz_file_info64_internal
- *pfile_info_internal,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize));
-
-local int unz64local_GetCurrentFileInfoInternal (unzFile file,
- unz_file_info64 *pfile_info,
- unz_file_info64_internal
- *pfile_info_internal,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize)
-{
- unz64_s* s;
- unz_file_info64 file_info;
- unz_file_info64_internal file_info_internal;
- int err=UNZ_OK;
- uLong uMagic;
- long lSeek=0;
- uLong uL;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- if (ZSEEK64(s->z_filefunc, s->filestream,
- s->pos_in_central_dir+s->byte_before_the_zipfile,
- ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=UNZ_ERRNO;
-
-
- /* we check the magic */
- if (err==UNZ_OK)
- {
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
- err=UNZ_ERRNO;
- else if (uMagic!=0x02014b50)
- err=UNZ_BADZIPFILE;
- }
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
- err=UNZ_ERRNO;
-
- unz64local_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
- err=UNZ_ERRNO;
- file_info.compressed_size = uL;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
- err=UNZ_ERRNO;
- file_info.uncompressed_size = uL;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
- err=UNZ_ERRNO;
-
- // relative offset of local header
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
- err=UNZ_ERRNO;
- file_info_internal.offset_curfile = uL;
-
- lSeek+=file_info.size_filename;
- if ((err==UNZ_OK) && (szFileName!=NULL))
- {
- uLong uSizeRead ;
- if (file_info.size_filename<fileNameBufferSize)
- {
- *(szFileName+file_info.size_filename)='\0';
- uSizeRead = file_info.size_filename;
- }
- else
- uSizeRead = fileNameBufferSize;
-
- if ((file_info.size_filename>0) && (fileNameBufferSize>0))
- if (ZREAD64(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek -= uSizeRead;
- }
-
- // Read extrafield
- if ((err==UNZ_OK) && (extraField!=NULL))
- {
- ZPOS64_T uSizeRead ;
- if (file_info.size_file_extra<extraFieldBufferSize)
- uSizeRead = file_info.size_file_extra;
- else
- uSizeRead = extraFieldBufferSize;
-
- if (lSeek!=0)
- {
- if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
- lSeek=0;
- else
- err=UNZ_ERRNO;
- }
-
- if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
- if (ZREAD64(s->z_filefunc, s->filestream,extraField,(uLong)uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
-
- lSeek += file_info.size_file_extra - (uLong)uSizeRead;
- }
- else
- lSeek += file_info.size_file_extra;
-
-
- if ((err==UNZ_OK) && (file_info.size_file_extra != 0))
- {
- uLong acc = 0;
-
- // since lSeek now points to after the extra field we need to move back
- lSeek -= file_info.size_file_extra;
-
- if (lSeek!=0)
- {
- if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
- lSeek=0;
- else
- err=UNZ_ERRNO;
- }
-
- while(acc < file_info.size_file_extra)
- {
- uLong headerId;
- uLong dataSize;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&headerId) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&dataSize) != UNZ_OK)
- err=UNZ_ERRNO;
-
- /* ZIP64 extra fields */
- if (headerId == 0x0001)
- {
- uLong uL;
-
- if(file_info.uncompressed_size == MAXU32)
- {
- if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
- err=UNZ_ERRNO;
- }
-
- if(file_info.compressed_size == MAXU32)
- {
- if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
- err=UNZ_ERRNO;
- }
-
- if(file_info_internal.offset_curfile == MAXU32)
- {
- /* Relative Header offset */
- if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
- err=UNZ_ERRNO;
- }
-
- if(file_info.disk_num_start == MAXU32)
- {
- /* Disk Start Number */
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
- err=UNZ_ERRNO;
- }
-
- }
- else
- {
- if (ZSEEK64(s->z_filefunc, s->filestream,dataSize,ZLIB_FILEFUNC_SEEK_CUR)!=0)
- err=UNZ_ERRNO;
- }
-
- acc += 2 + 2 + dataSize;
- }
- }
-
- if ((err==UNZ_OK) && (szComment!=NULL))
- {
- uLong uSizeRead ;
- if (file_info.size_file_comment<commentBufferSize)
- {
- *(szComment+file_info.size_file_comment)='\0';
- uSizeRead = file_info.size_file_comment;
- }
- else
- uSizeRead = commentBufferSize;
-
- if (lSeek!=0)
- {
- if (ZSEEK64(s->z_filefunc, s->filestream,lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
- lSeek=0;
- else
- err=UNZ_ERRNO;
- }
-
- if ((file_info.size_file_comment>0) && (commentBufferSize>0))
- if (ZREAD64(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek+=file_info.size_file_comment - uSizeRead;
- }
- else
- lSeek+=file_info.size_file_comment;
-
-
- if ((err==UNZ_OK) && (pfile_info!=NULL))
- *pfile_info=file_info;
-
- if ((err==UNZ_OK) && (pfile_info_internal!=NULL))
- *pfile_info_internal=file_info_internal;
-
- return err;
-}
-
-
-
-/*
- Write info about the ZipFile in the *pglobal_info structure.
- No preparation of the structure is needed
- return UNZ_OK if there is no problem.
-*/
-extern int ZEXPORT unzGetCurrentFileInfo64 (unzFile file,
- unz_file_info64 * pfile_info,
- char * szFileName, uLong fileNameBufferSize,
- void *extraField, uLong extraFieldBufferSize,
- char* szComment, uLong commentBufferSize)
-{
- return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL,
- szFileName,fileNameBufferSize,
- extraField,extraFieldBufferSize,
- szComment,commentBufferSize);
-}
-
-extern int ZEXPORT unzGetCurrentFileInfo (unzFile file,
- unz_file_info * pfile_info,
- char * szFileName, uLong fileNameBufferSize,
- void *extraField, uLong extraFieldBufferSize,
- char* szComment, uLong commentBufferSize)
-{
- int err;
- unz_file_info64 file_info64;
- err = unz64local_GetCurrentFileInfoInternal(file,&file_info64,NULL,
- szFileName,fileNameBufferSize,
- extraField,extraFieldBufferSize,
- szComment,commentBufferSize);
- if ((err==UNZ_OK) && (pfile_info != NULL))
- {
- pfile_info->version = file_info64.version;
- pfile_info->version_needed = file_info64.version_needed;
- pfile_info->flag = file_info64.flag;
- pfile_info->compression_method = file_info64.compression_method;
- pfile_info->dosDate = file_info64.dosDate;
- pfile_info->crc = file_info64.crc;
-
- pfile_info->size_filename = file_info64.size_filename;
- pfile_info->size_file_extra = file_info64.size_file_extra;
- pfile_info->size_file_comment = file_info64.size_file_comment;
-
- pfile_info->disk_num_start = file_info64.disk_num_start;
- pfile_info->internal_fa = file_info64.internal_fa;
- pfile_info->external_fa = file_info64.external_fa;
-
- pfile_info->tmu_date = file_info64.tmu_date,
-
-
- pfile_info->compressed_size = (uLong)file_info64.compressed_size;
- pfile_info->uncompressed_size = (uLong)file_info64.uncompressed_size;
-
- }
- return err;
-}
-/*
- Set the current file of the zipfile to the first file.
- return UNZ_OK if there is no problem
-*/
-extern int ZEXPORT unzGoToFirstFile (unzFile file)
-{
- int err=UNZ_OK;
- unz64_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- s->pos_in_central_dir=s->offset_central_dir;
- s->num_file=0;
- err=unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-/*
- Set the current file of the zipfile to the next file.
- return UNZ_OK if there is no problem
- return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
-*/
-extern int ZEXPORT unzGoToNextFile (unzFile file)
-{
- unz64_s* s;
- int err;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
- if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */
- if (s->num_file+1==s->gi.number_entry)
- return UNZ_END_OF_LIST_OF_FILE;
-
- s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
- s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ;
- s->num_file++;
- err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-
-/*
- Try locate the file szFileName in the zipfile.
- For the iCaseSensitivity signification, see unzStringFileNameCompare
-
- return value :
- UNZ_OK if the file is found. It becomes the current file.
- UNZ_END_OF_LIST_OF_FILE if the file is not found
-*/
-extern int ZEXPORT unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity)
-{
- unz64_s* s;
- int err;
-
- /* We remember the 'current' position in the file so that we can jump
- * back there if we fail.
- */
- unz_file_info64 cur_file_infoSaved;
- unz_file_info64_internal cur_file_info_internalSaved;
- ZPOS64_T num_fileSaved;
- ZPOS64_T pos_in_central_dirSaved;
-
-
- if (file==NULL)
- return UNZ_PARAMERROR;
-
- if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
- return UNZ_PARAMERROR;
-
- s=(unz64_s*)file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
-
- /* Save the current state */
- num_fileSaved = s->num_file;
- pos_in_central_dirSaved = s->pos_in_central_dir;
- cur_file_infoSaved = s->cur_file_info;
- cur_file_info_internalSaved = s->cur_file_info_internal;
-
- err = unzGoToFirstFile(file);
-
- while (err == UNZ_OK)
- {
- char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
- err = unzGetCurrentFileInfo64(file,NULL,
- szCurrentFileName,sizeof(szCurrentFileName)-1,
- NULL,0,NULL,0);
- if (err == UNZ_OK)
- {
- if (unzStringFileNameCompare(szCurrentFileName,
- szFileName,iCaseSensitivity)==0)
- return UNZ_OK;
- err = unzGoToNextFile(file);
- }
- }
-
- /* We failed, so restore the state of the 'current file' to where we
- * were.
- */
- s->num_file = num_fileSaved ;
- s->pos_in_central_dir = pos_in_central_dirSaved ;
- s->cur_file_info = cur_file_infoSaved;
- s->cur_file_info_internal = cur_file_info_internalSaved;
- return err;
-}
-
-
-/*
-///////////////////////////////////////////
-// Contributed by Ryan Haksi (mailto://cryogen@infoserve.net)
-// I need random access
-//
-// Further optimization could be realized by adding an ability
-// to cache the directory in memory. The goal being a single
-// comprehensive file read to put the file I need in a memory.
-*/
-
-/*
-typedef struct unz_file_pos_s
-{
- ZPOS64_T pos_in_zip_directory; // offset in file
- ZPOS64_T num_of_file; // # of file
-} unz_file_pos;
-*/
-
-extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos* file_pos)
-{
- unz64_s* s;
-
- if (file==NULL || file_pos==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- if (!s->current_file_ok)
- return UNZ_END_OF_LIST_OF_FILE;
-
- file_pos->pos_in_zip_directory = s->pos_in_central_dir;
- file_pos->num_of_file = s->num_file;
-
- return UNZ_OK;
-}
-
-extern int ZEXPORT unzGetFilePos(
- unzFile file,
- unz_file_pos* file_pos)
-{
- unz64_file_pos file_pos64;
- int err = unzGetFilePos64(file,&file_pos64);
- if (err==UNZ_OK)
- {
- file_pos->pos_in_zip_directory = (uLong)file_pos64.pos_in_zip_directory;
- file_pos->num_of_file = (uLong)file_pos64.num_of_file;
- }
- return err;
-}
-
-extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos* file_pos)
-{
- unz64_s* s;
- int err;
-
- if (file==NULL || file_pos==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
-
- /* jump to the right spot */
- s->pos_in_central_dir = file_pos->pos_in_zip_directory;
- s->num_file = file_pos->num_of_file;
-
- /* set the current file */
- err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- /* return results */
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-extern int ZEXPORT unzGoToFilePos(
- unzFile file,
- unz_file_pos* file_pos)
-{
- unz64_file_pos file_pos64;
- if (file_pos == NULL)
- return UNZ_PARAMERROR;
-
- file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory;
- file_pos64.num_of_file = file_pos->num_of_file;
- return unzGoToFilePos64(file,&file_pos64);
-}
-
-/*
-// Unzip Helper Functions - should be here?
-///////////////////////////////////////////
-*/
-
-/*
- Read the local header of the current zipfile
- Check the coherency of the local header and info in the end of central
- directory about this file
- store in *piSizeVar the size of extra info in local header
- (filename and size of extra field data)
-*/
-local int unz64local_CheckCurrentFileCoherencyHeader (unz64_s* s, uInt* piSizeVar,
- ZPOS64_T * poffset_local_extrafield,
- uInt * psize_local_extrafield)
-{
- uLong uMagic,uData,uFlags;
- uLong size_filename;
- uLong size_extra_field;
- int err=UNZ_OK;
-
- *piSizeVar = 0;
- *poffset_local_extrafield = 0;
- *psize_local_extrafield = 0;
-
- if (ZSEEK64(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile +
- s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
-
- if (err==UNZ_OK)
- {
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
- err=UNZ_ERRNO;
- else if (uMagic!=0x04034b50)
- err=UNZ_BADZIPFILE;
- }
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
- err=UNZ_ERRNO;
-/*
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion))
- err=UNZ_BADZIPFILE;
-*/
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method))
- err=UNZ_BADZIPFILE;
-
- if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) &&
-/* #ifdef HAVE_BZIP2 */
- (s->cur_file_info.compression_method!=Z_BZIP2ED) &&
-/* #endif */
- (s->cur_file_info.compression_method!=Z_DEFLATED))
- err=UNZ_BADZIPFILE;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
- err=UNZ_ERRNO;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
- err=UNZ_ERRNO;
- else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
- if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
- err=UNZ_ERRNO;
- else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK)
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename))
- err=UNZ_BADZIPFILE;
-
- *piSizeVar += (uInt)size_filename;
-
- if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK)
- err=UNZ_ERRNO;
- *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile +
- SIZEZIPLOCALHEADER + size_filename;
- *psize_local_extrafield = (uInt)size_extra_field;
-
- *piSizeVar += (uInt)size_extra_field;
-
- return err;
-}
-
-/*
- Open for reading data the current file in the zipfile.
- If there is no error and the file is opened, the return value is UNZ_OK.
-*/
-extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method,
- int* level, int raw, const char* password)
-{
- int err=UNZ_OK;
- uInt iSizeVar;
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- ZPOS64_T offset_local_extrafield; /* offset of the local extra field */
- uInt size_local_extrafield; /* size of the local extra field */
-# ifndef NOUNCRYPT
- char source[12];
-# else
- if (password != NULL)
- return UNZ_PARAMERROR;
-# endif
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- if (!s->current_file_ok)
- return UNZ_PARAMERROR;
-
- if (s->pfile_in_zip_read != NULL)
- unzCloseCurrentFile(file);
-
- if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
- return UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s));
- if (pfile_in_zip_read_info==NULL)
- return UNZ_INTERNALERROR;
-
- pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
- pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
- pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
- pfile_in_zip_read_info->pos_local_extrafield=0;
- pfile_in_zip_read_info->raw=raw;
-
- if (pfile_in_zip_read_info->read_buffer==NULL)
- {
- TRYFREE(pfile_in_zip_read_info);
- return UNZ_INTERNALERROR;
- }
-
- pfile_in_zip_read_info->stream_initialised=0;
-
- if (method!=NULL)
- *method = (int)s->cur_file_info.compression_method;
-
- if (level!=NULL)
- {
- *level = 6;
- switch (s->cur_file_info.flag & 0x06)
- {
- case 6 : *level = 1; break;
- case 4 : *level = 2; break;
- case 2 : *level = 9; break;
- }
- }
-
- if ((s->cur_file_info.compression_method!=0) &&
-/* #ifdef HAVE_BZIP2 */
- (s->cur_file_info.compression_method!=Z_BZIP2ED) &&
-/* #endif */
- (s->cur_file_info.compression_method!=Z_DEFLATED))
-
- err=UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
- pfile_in_zip_read_info->crc32=0;
- pfile_in_zip_read_info->total_out_64=0;
- pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method;
- pfile_in_zip_read_info->filestream=s->filestream;
- pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
- pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
-
- pfile_in_zip_read_info->stream.total_out = 0;
-
- if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw))
- {
-#ifdef HAVE_BZIP2
- pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0;
- pfile_in_zip_read_info->bstream.bzfree = (free_func)0;
- pfile_in_zip_read_info->bstream.opaque = (voidpf)0;
- pfile_in_zip_read_info->bstream.state = (voidpf)0;
-
- pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
- pfile_in_zip_read_info->stream.zfree = (free_func)0;
- pfile_in_zip_read_info->stream.opaque = (voidpf)0;
- pfile_in_zip_read_info->stream.next_in = (voidpf)0;
- pfile_in_zip_read_info->stream.avail_in = 0;
-
- err=BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0);
- if (err == Z_OK)
- pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED;
- else
- {
- TRYFREE(pfile_in_zip_read_info);
- return err;
- }
-#else
- pfile_in_zip_read_info->raw=1;
-#endif
- }
- else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw))
- {
- pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
- pfile_in_zip_read_info->stream.zfree = (free_func)0;
- pfile_in_zip_read_info->stream.opaque = (voidpf)0;
- pfile_in_zip_read_info->stream.next_in = 0;
- pfile_in_zip_read_info->stream.avail_in = 0;
-
- err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
- if (err == Z_OK)
- pfile_in_zip_read_info->stream_initialised=Z_DEFLATED;
- else
- {
- TRYFREE(pfile_in_zip_read_info);
- return err;
- }
- /* windowBits is passed < 0 to tell that there is no zlib header.
- * Note that in this case inflate *requires* an extra "dummy" byte
- * after the compressed stream in order to complete decompression and
- * return Z_STREAM_END.
- * In unzip, i don't wait absolutely Z_STREAM_END because I known the
- * size of both compressed and uncompressed data
- */
- }
- pfile_in_zip_read_info->rest_read_compressed =
- s->cur_file_info.compressed_size ;
- pfile_in_zip_read_info->rest_read_uncompressed =
- s->cur_file_info.uncompressed_size ;
-
-
- pfile_in_zip_read_info->pos_in_zipfile =
- s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
- iSizeVar;
-
- pfile_in_zip_read_info->stream.avail_in = (uInt)0;
-
- s->pfile_in_zip_read = pfile_in_zip_read_info;
- s->encrypted = 0;
-
-# ifndef NOUNCRYPT
- if (password != NULL)
- {
- int i;
- s->pcrc_32_tab = get_crc_table();
- init_keys(password,s->keys,s->pcrc_32_tab);
- if (ZSEEK64(s->z_filefunc, s->filestream,
- s->pfile_in_zip_read->pos_in_zipfile +
- s->pfile_in_zip_read->byte_before_the_zipfile,
- SEEK_SET)!=0)
- return UNZ_INTERNALERROR;
- if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12)
- return UNZ_INTERNALERROR;
-
- for (i = 0; i<12; i++)
- zdecode(s->keys,s->pcrc_32_tab,source[i]);
-
- s->pfile_in_zip_read->pos_in_zipfile+=12;
- s->encrypted=1;
- }
-# endif
-
-
- return UNZ_OK;
-}
-
-extern int ZEXPORT unzOpenCurrentFile (unzFile file)
-{
- return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
-}
-
-extern int ZEXPORT unzOpenCurrentFilePassword (unzFile file, const char* password)
-{
- return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
-}
-
-extern int ZEXPORT unzOpenCurrentFile2 (unzFile file, int* method, int* level, int raw)
-{
- return unzOpenCurrentFile3(file, method, level, raw, NULL);
-}
-
-/** Addition for GDAL : START */
-
-extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64( unzFile file)
-{
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- s=(unz64_s*)file;
- if (file==NULL)
- return 0; //UNZ_PARAMERROR;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
- if (pfile_in_zip_read_info==NULL)
- return 0; //UNZ_PARAMERROR;
- return pfile_in_zip_read_info->pos_in_zipfile +
- pfile_in_zip_read_info->byte_before_the_zipfile;
-}
-
-/** Addition for GDAL : END */
-
-/*
- Read bytes from the current file.
- buf contain buffer where data must be copied
- len the size of buf.
-
- return the number of byte copied if somes bytes are copied
- return 0 if the end of file was reached
- return <0 with error code if there is an error
- (UNZ_ERRNO for IO error, or zLib error for uncompress error)
-*/
-extern int ZEXPORT unzReadCurrentFile (unzFile file, voidp buf, unsigned len)
-{
- int err=UNZ_OK;
- uInt iRead = 0;
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
-
- if (pfile_in_zip_read_info->read_buffer == NULL)
- return UNZ_END_OF_LIST_OF_FILE;
- if (len==0)
- return 0;
-
- pfile_in_zip_read_info->stream.next_out = (Bytef*)buf;
-
- pfile_in_zip_read_info->stream.avail_out = (uInt)len;
-
- if ((len>pfile_in_zip_read_info->rest_read_uncompressed) &&
- (!(pfile_in_zip_read_info->raw)))
- pfile_in_zip_read_info->stream.avail_out =
- (uInt)pfile_in_zip_read_info->rest_read_uncompressed;
-
- if ((len>pfile_in_zip_read_info->rest_read_compressed+
- pfile_in_zip_read_info->stream.avail_in) &&
- (pfile_in_zip_read_info->raw))
- pfile_in_zip_read_info->stream.avail_out =
- (uInt)pfile_in_zip_read_info->rest_read_compressed+
- pfile_in_zip_read_info->stream.avail_in;
-
- while (pfile_in_zip_read_info->stream.avail_out>0)
- {
- if ((pfile_in_zip_read_info->stream.avail_in==0) &&
- (pfile_in_zip_read_info->rest_read_compressed>0))
- {
- uInt uReadThis = UNZ_BUFSIZE;
- if (pfile_in_zip_read_info->rest_read_compressed<uReadThis)
- uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed;
- if (uReadThis == 0)
- return UNZ_EOF;
- if (ZSEEK64(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- pfile_in_zip_read_info->pos_in_zipfile +
- pfile_in_zip_read_info->byte_before_the_zipfile,
- ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
- if (ZREAD64(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- pfile_in_zip_read_info->read_buffer,
- uReadThis)!=uReadThis)
- return UNZ_ERRNO;
-
-
-# ifndef NOUNCRYPT
- if(s->encrypted)
- {
- uInt i;
- for(i=0;i<uReadThis;i++)
- pfile_in_zip_read_info->read_buffer[i] =
- zdecode(s->keys,s->pcrc_32_tab,
- pfile_in_zip_read_info->read_buffer[i]);
- }
-# endif
-
-
- pfile_in_zip_read_info->pos_in_zipfile += uReadThis;
-
- pfile_in_zip_read_info->rest_read_compressed-=uReadThis;
-
- pfile_in_zip_read_info->stream.next_in =
- (Bytef*)pfile_in_zip_read_info->read_buffer;
- pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis;
- }
-
- if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw))
- {
- uInt uDoCopy,i ;
-
- if ((pfile_in_zip_read_info->stream.avail_in == 0) &&
- (pfile_in_zip_read_info->rest_read_compressed == 0))
- return (iRead==0) ? UNZ_EOF : iRead;
-
- if (pfile_in_zip_read_info->stream.avail_out <
- pfile_in_zip_read_info->stream.avail_in)
- uDoCopy = pfile_in_zip_read_info->stream.avail_out ;
- else
- uDoCopy = pfile_in_zip_read_info->stream.avail_in ;
-
- for (i=0;i<uDoCopy;i++)
- *(pfile_in_zip_read_info->stream.next_out+i) =
- *(pfile_in_zip_read_info->stream.next_in+i);
-
- pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy;
-
- pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,
- pfile_in_zip_read_info->stream.next_out,
- uDoCopy);
- pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy;
- pfile_in_zip_read_info->stream.avail_in -= uDoCopy;
- pfile_in_zip_read_info->stream.avail_out -= uDoCopy;
- pfile_in_zip_read_info->stream.next_out += uDoCopy;
- pfile_in_zip_read_info->stream.next_in += uDoCopy;
- pfile_in_zip_read_info->stream.total_out += uDoCopy;
- iRead += uDoCopy;
- }
- else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED)
- {
-#ifdef HAVE_BZIP2
- uLong uTotalOutBefore,uTotalOutAfter;
- const Bytef *bufBefore;
- uLong uOutThis;
-
- pfile_in_zip_read_info->bstream.next_in = (char*)pfile_in_zip_read_info->stream.next_in;
- pfile_in_zip_read_info->bstream.avail_in = pfile_in_zip_read_info->stream.avail_in;
- pfile_in_zip_read_info->bstream.total_in_lo32 = pfile_in_zip_read_info->stream.total_in;
- pfile_in_zip_read_info->bstream.total_in_hi32 = 0;
- pfile_in_zip_read_info->bstream.next_out = (char*)pfile_in_zip_read_info->stream.next_out;
- pfile_in_zip_read_info->bstream.avail_out = pfile_in_zip_read_info->stream.avail_out;
- pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out;
- pfile_in_zip_read_info->bstream.total_out_hi32 = 0;
-
- uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32;
- bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out;
-
- err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream);
-
- uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32;
- uOutThis = uTotalOutAfter-uTotalOutBefore;
-
- pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis;
-
- pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis));
- pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis;
- iRead += (uInt)(uTotalOutAfter - uTotalOutBefore);
-
- pfile_in_zip_read_info->stream.next_in = (Bytef*)pfile_in_zip_read_info->bstream.next_in;
- pfile_in_zip_read_info->stream.avail_in = pfile_in_zip_read_info->bstream.avail_in;
- pfile_in_zip_read_info->stream.total_in = pfile_in_zip_read_info->bstream.total_in_lo32;
- pfile_in_zip_read_info->stream.next_out = (Bytef*)pfile_in_zip_read_info->bstream.next_out;
- pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out;
- pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32;
-
- if (err==BZ_STREAM_END)
- return (iRead==0) ? UNZ_EOF : iRead;
- if (err!=BZ_OK)
- break;
-#endif
- } // end Z_BZIP2ED
- else
- {
- ZPOS64_T uTotalOutBefore,uTotalOutAfter;
- const Bytef *bufBefore;
- ZPOS64_T uOutThis;
- int flush=Z_SYNC_FLUSH;
-
- uTotalOutBefore = pfile_in_zip_read_info->stream.total_out;
- bufBefore = pfile_in_zip_read_info->stream.next_out;
-
- /*
- if ((pfile_in_zip_read_info->rest_read_uncompressed ==
- pfile_in_zip_read_info->stream.avail_out) &&
- (pfile_in_zip_read_info->rest_read_compressed == 0))
- flush = Z_FINISH;
- */
- err=inflate(&pfile_in_zip_read_info->stream,flush);
-
- if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL))
- err = Z_DATA_ERROR;
-
- uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
- uOutThis = uTotalOutAfter-uTotalOutBefore;
-
- pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis;
-
- pfile_in_zip_read_info->crc32 =
- crc32(pfile_in_zip_read_info->crc32,bufBefore,
- (uInt)(uOutThis));
-
- pfile_in_zip_read_info->rest_read_uncompressed -=
- uOutThis;
-
- iRead += (uInt)(uTotalOutAfter - uTotalOutBefore);
-
- if (err==Z_STREAM_END)
- return (iRead==0) ? UNZ_EOF : iRead;
- if (err!=Z_OK)
- break;
- }
- }
-
- if (err==Z_OK)
- return iRead;
- return err;
-}
-
-
-/*
- Give the current position in uncompressed data
-*/
-extern z_off_t ZEXPORT unztell (unzFile file)
-{
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
- return (z_off_t)pfile_in_zip_read_info->stream.total_out;
-}
-
-extern ZPOS64_T ZEXPORT unztell64 (unzFile file)
-{
-
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return (ZPOS64_T)-1;
- s=(unz64_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return (ZPOS64_T)-1;
-
- return pfile_in_zip_read_info->total_out_64;
-}
-
-
-/*
- return 1 if the end of file was reached, 0 elsewhere
-*/
-extern int ZEXPORT unzeof (unzFile file)
-{
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
- if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
- return 1;
- else
- return 0;
-}
-
-
-
-/*
-Read extra field from the current file (opened by unzOpenCurrentFile)
-This is the local-header version of the extra field (sometimes, there is
-more info in the local-header version than in the central-header)
-
- if buf==NULL, it return the size of the local extra field that can be read
-
- if buf!=NULL, len is the size of the buffer, the extra header is copied in
- buf.
- the return value is the number of bytes copied in buf, or (if <0)
- the error code
-*/
-extern int ZEXPORT unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len)
-{
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- uInt read_now;
- ZPOS64_T size_to_read;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
- size_to_read = (pfile_in_zip_read_info->size_local_extrafield -
- pfile_in_zip_read_info->pos_local_extrafield);
-
- if (buf==NULL)
- return (int)size_to_read;
-
- if (len>size_to_read)
- read_now = (uInt)size_to_read;
- else
- read_now = (uInt)len ;
-
- if (read_now==0)
- return 0;
-
- if (ZSEEK64(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- pfile_in_zip_read_info->offset_local_extrafield +
- pfile_in_zip_read_info->pos_local_extrafield,
- ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
- if (ZREAD64(pfile_in_zip_read_info->z_filefunc,
- pfile_in_zip_read_info->filestream,
- buf,read_now)!=read_now)
- return UNZ_ERRNO;
-
- return (int)read_now;
-}
-
-/*
- Close the file in zip opened with unzOpenCurrentFile
- Return UNZ_CRCERROR if all the file was read but the CRC is not good
-*/
-extern int ZEXPORT unzCloseCurrentFile (unzFile file)
-{
- int err=UNZ_OK;
-
- unz64_s* s;
- file_in_zip64_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
- pfile_in_zip_read_info=s->pfile_in_zip_read;
-
- if (pfile_in_zip_read_info==NULL)
- return UNZ_PARAMERROR;
-
-
- if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
- (!pfile_in_zip_read_info->raw))
- {
- if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
- err=UNZ_CRCERROR;
- }
-
-
- TRYFREE(pfile_in_zip_read_info->read_buffer);
- pfile_in_zip_read_info->read_buffer = NULL;
- if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED)
- inflateEnd(&pfile_in_zip_read_info->stream);
-#ifdef HAVE_BZIP2
- else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED)
- BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream);
-#endif
-
-
- pfile_in_zip_read_info->stream_initialised = 0;
- TRYFREE(pfile_in_zip_read_info);
-
- s->pfile_in_zip_read=NULL;
-
- return err;
-}
-
-
-/*
- Get the global comment string of the ZipFile, in the szComment buffer.
- uSizeBuf is the size of the szComment buffer.
- return the number of byte copied or an error code <0
-*/
-extern int ZEXPORT unzGetGlobalComment (unzFile file, char * szComment, uLong uSizeBuf)
-{
- unz64_s* s;
- uLong uReadThis ;
- if (file==NULL)
- return (int)UNZ_PARAMERROR;
- s=(unz64_s*)file;
-
- uReadThis = uSizeBuf;
- if (uReadThis>s->gi.size_comment)
- uReadThis = s->gi.size_comment;
-
- if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
- if (uReadThis>0)
- {
- *szComment='\0';
- if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis)
- return UNZ_ERRNO;
- }
-
- if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment))
- *(szComment+s->gi.size_comment)='\0';
- return (int)uReadThis;
-}
-
-/* Additions by RX '2004 */
-extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file)
-{
- unz64_s* s;
-
- if (file==NULL)
- return 0; //UNZ_PARAMERROR;
- s=(unz64_s*)file;
- if (!s->current_file_ok)
- return 0;
- if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff)
- if (s->num_file==s->gi.number_entry)
- return 0;
- return s->pos_in_central_dir;
-}
-
-extern uLong ZEXPORT unzGetOffset (unzFile file)
-{
- ZPOS64_T offset64;
-
- if (file==NULL)
- return 0; //UNZ_PARAMERROR;
- offset64 = unzGetOffset64(file);
- return (uLong)offset64;
-}
-
-extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos)
-{
- unz64_s* s;
- int err;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz64_s*)file;
-
- s->pos_in_central_dir = pos;
- s->num_file = s->gi.number_entry; /* hack */
- err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
- &s->cur_file_info_internal,
- NULL,0,NULL,0,NULL,0);
- s->current_file_ok = (err == UNZ_OK);
- return err;
-}
-
-extern int ZEXPORT unzSetOffset (unzFile file, uLong pos)
-{
- return unzSetOffset64(file,pos);
-}