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-rw-r--r--src/zlib/unzip.c3204
1 files changed, 1602 insertions, 1602 deletions
diff --git a/src/zlib/unzip.c b/src/zlib/unzip.c
index 37b4f144b..8b5b30204 100644
--- a/src/zlib/unzip.c
+++ b/src/zlib/unzip.c
@@ -1,1602 +1,1602 @@
-/* unzip.c -- IO for uncompress .zip files using zlib
- Version 1.01e, February 12th, 2005
-
- Copyright (C) 1998-2005 Gilles Vollant
-
- Read unzip.h for more info
-*/
-
-/* 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).
- */
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#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_info_internal_s
-{
- uLong offset_curfile;/* relative offset of local header 4 bytes */
-} unz_file_info_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 */
-
- uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek*/
- uLong stream_initialised; /* flag set if stream structure is initialised*/
-
- uLong offset_local_extrafield;/* offset of the local extra field */
- uInt size_local_extrafield;/* size of the local extra field */
- uLong pos_local_extrafield; /* position in the local extra field in read*/
-
- uLong crc32; /* crc32 of all data uncompressed */
- uLong crc32_wait; /* crc32 we must obtain after decompress all */
- uLong rest_read_compressed; /* number of byte to be decompressed */
- uLong rest_read_uncompressed;/*number of byte to be obtained after decomp*/
- zlib_filefunc_def z_filefunc;
- voidpf filestream; /* io structore of the zipfile */
- uLong compression_method; /* compression method (0==store) */
- uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
- int raw;
-} file_in_zip_read_info_s;
-
-
-/* unz_s contain internal information about the zipfile
-*/
-typedef struct
-{
- zlib_filefunc_def z_filefunc;
- voidpf filestream; /* io structore of the zipfile */
- unz_global_info gi; /* public global information */
- uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
- uLong num_file; /* number of the current file in the zipfile*/
- uLong pos_in_central_dir; /* pos of the current file in the central dir*/
- uLong current_file_ok; /* flag about the usability of the current file*/
- uLong central_pos; /* position of the beginning of the central dir*/
-
- uLong size_central_dir; /* size of the central directory */
- uLong offset_central_dir; /* offset of start of central directory with
- respect to the starting disk number */
-
- unz_file_info cur_file_info; /* public info about the current file in zip*/
- unz_file_info_internal cur_file_info_internal; /* private info about it*/
- file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current
- file if we are decompressing it */
- int encrypted;
-# ifndef NOUNCRYPT
- unsigned long keys[3]; /* keys defining the pseudo-random sequence */
- const unsigned long* pcrc_32_tab;
-# endif
-} unz_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 sucessfully opened for reading.
-*/
-
-
-local int unzlocal_getByte OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- int *pi));
-
-local int unzlocal_getByte(pzlib_filefunc_def,filestream,pi)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- int *pi;
-{
- unsigned char c;
- int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
- if (err==1)
- {
- *pi = (int)c;
- return UNZ_OK;
- }
- else
- {
- if (ZERROR(*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 unzlocal_getShort OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int unzlocal_getShort (pzlib_filefunc_def,filestream,pX)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong *pX;
-{
- uLong x ;
- int i;
- int err;
-
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<8;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-local int unzlocal_getLong OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream,
- uLong *pX));
-
-local int unzlocal_getLong (pzlib_filefunc_def,filestream,pX)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
- uLong *pX;
-{
- uLong x ;
- int i;
- int err;
-
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x = (uLong)i;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<8;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<16;
-
- if (err==UNZ_OK)
- err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
- x += ((uLong)i)<<24;
-
- if (err==UNZ_OK)
- *pX = x;
- else
- *pX = 0;
- return err;
-}
-
-
-/* My own strcmpi / strcasecmp */
-local int strcmpcasenosensitive_internal (fileName1,fileName2)
- 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 (fileName1,fileName2,iCaseSensitivity)
- 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 uLong unzlocal_SearchCentralDir OF((
- const zlib_filefunc_def* pzlib_filefunc_def,
- voidpf filestream));
-
-local uLong unzlocal_SearchCentralDir(pzlib_filefunc_def,filestream)
- const zlib_filefunc_def* pzlib_filefunc_def;
- voidpf filestream;
-{
- unsigned char* buf;
- uLong uSizeFile;
- uLong uBackRead;
- uLong uMaxBack=0xffff; /* maximum size of global comment */
- uLong uPosFound=0;
-
- if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
- return 0;
-
-
- uSizeFile = ZTELL(*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,uReadPos ;
- int i;
- if (uBackRead+BUFREADCOMMENT>uMaxBack)
- uBackRead = uMaxBack;
- else
- uBackRead+=BUFREADCOMMENT;
- uReadPos = uSizeFile-uBackRead ;
-
- uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
- (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
- if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- break;
-
- if (ZREAD(*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;
-}
-
-/*
- 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.
-*/
-extern unzFile ZEXPORT unzOpen2 (path, pzlib_filefunc_def)
- const char *path;
- zlib_filefunc_def* pzlib_filefunc_def;
-{
- unz_s us;
- unz_s *s;
- uLong central_pos,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*/
- uLong 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;
-
- if (pzlib_filefunc_def==NULL)
- fill_fopen_filefunc(&us.z_filefunc);
- else
- us.z_filefunc = *pzlib_filefunc_def;
-
- us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque,
- path,
- ZLIB_FILEFUNC_MODE_READ |
- ZLIB_FILEFUNC_MODE_EXISTING);
- if (us.filestream==NULL)
- return NULL;
-
- central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream);
- if (central_pos==0)
- err=UNZ_ERRNO;
-
- if (ZSEEK(us.z_filefunc, us.filestream,
- central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
- err=UNZ_ERRNO;
-
- /* the signature, already checked */
- if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* number of this disk */
- if (unzlocal_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 (unzlocal_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 (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* total number of entries in the central dir */
- if (unzlocal_getShort(&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 (unzlocal_getLong(&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 (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
- err=UNZ_ERRNO;
-
- /* zipfile comment length */
- if (unzlocal_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)
- {
- ZCLOSE(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=(unz_s*)ALLOC(sizeof(unz_s));
- *s=us;
- unzGoToFirstFile((unzFile)s);
- return (unzFile)s;
-}
-
-
-extern unzFile ZEXPORT unzOpen (path)
- const char *path;
-{
- return unzOpen2(path, NULL);
-}
-
-/*
- Close a ZipFile opened with unzipOpen.
- If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
- these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
- return UNZ_OK if there is no problem. */
-extern int ZEXPORT unzClose (file)
- unzFile file;
-{
- unz_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- if (s->pfile_in_zip_read!=NULL)
- unzCloseCurrentFile(file);
-
- ZCLOSE(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 unzGetGlobalInfo (file,pglobal_info)
- unzFile file;
- unz_global_info *pglobal_info;
-{
- unz_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- *pglobal_info=s->gi;
- return UNZ_OK;
-}
-
-
-/*
- Translate date/time from Dos format to tm_unz (readable more easilty)
-*/
-local void unzlocal_DosDateToTmuDate (ulDosDate, ptm)
- uLong ulDosDate;
- tm_unz* ptm;
-{
- uLong uDate;
- uDate = (uLong)(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 unzlocal_GetCurrentFileInfoInternal OF((unzFile file,
- unz_file_info *pfile_info,
- unz_file_info_internal
- *pfile_info_internal,
- char *szFileName,
- uLong fileNameBufferSize,
- void *extraField,
- uLong extraFieldBufferSize,
- char *szComment,
- uLong commentBufferSize));
-
-local int unzlocal_GetCurrentFileInfoInternal (file,
- pfile_info,
- pfile_info_internal,
- szFileName, fileNameBufferSize,
- extraField, extraFieldBufferSize,
- szComment, commentBufferSize)
- unzFile file;
- unz_file_info *pfile_info;
- unz_file_info_internal *pfile_info_internal;
- char *szFileName;
- uLong fileNameBufferSize;
- void *extraField;
- uLong extraFieldBufferSize;
- char *szComment;
- uLong commentBufferSize;
-{
- unz_s* s;
- unz_file_info file_info;
- unz_file_info_internal file_info_internal;
- int err=UNZ_OK;
- uLong uMagic;
- long lSeek=0;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- if (ZSEEK(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 (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
- err=UNZ_ERRNO;
- else if (uMagic!=0x02014b50)
- err=UNZ_BADZIPFILE;
- }
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
- err=UNZ_ERRNO;
-
- unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
- err=UNZ_ERRNO;
-
- 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 (ZREAD(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek -= uSizeRead;
- }
-
-
- if ((err==UNZ_OK) && (extraField!=NULL))
- {
- uLong uSizeRead ;
- if (file_info.size_file_extra<extraFieldBufferSize)
- uSizeRead = file_info.size_file_extra;
- else
- uSizeRead = extraFieldBufferSize;
-
- if (lSeek!=0) {
- if (ZSEEK(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 (ZREAD(s->z_filefunc, s->filestream,extraField,uSizeRead)!=uSizeRead)
- err=UNZ_ERRNO;
- lSeek += file_info.size_file_extra - uSizeRead;
- }
- else
- lSeek+=file_info.size_file_extra;
-
-
- 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 (ZSEEK(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 (ZREAD(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 unzGetCurrentFileInfo (file,
- pfile_info,
- szFileName, fileNameBufferSize,
- extraField, extraFieldBufferSize,
- szComment, commentBufferSize)
- unzFile file;
- unz_file_info *pfile_info;
- char *szFileName;
- uLong fileNameBufferSize;
- void *extraField;
- uLong extraFieldBufferSize;
- char *szComment;
- uLong commentBufferSize;
-{
- return unzlocal_GetCurrentFileInfoInternal(file,pfile_info,NULL,
- szFileName,fileNameBufferSize,
- extraField,extraFieldBufferSize,
- szComment,commentBufferSize);
-}
-
-/*
- Set the current file of the zipfile to the first file.
- return UNZ_OK if there is no problem
-*/
-extern int ZEXPORT unzGoToFirstFile (file)
- unzFile file;
-{
- int err=UNZ_OK;
- unz_s* s;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
- s->pos_in_central_dir=s->offset_central_dir;
- s->num_file=0;
- err=unzlocal_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 (file)
- unzFile file;
-{
- unz_s* s;
- int err;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 = unzlocal_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 unzipStringFileNameCompare
-
- 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 (file, szFileName, iCaseSensitivity)
- unzFile file;
- const char *szFileName;
- int iCaseSensitivity;
-{
- unz_s* s;
- int err;
-
- /* We remember the 'current' position in the file so that we can jump
- * back there if we fail.
- */
- unz_file_info cur_file_infoSaved;
- unz_file_info_internal cur_file_info_internalSaved;
- uLong num_fileSaved;
- uLong pos_in_central_dirSaved;
-
-
- if (file==NULL)
- return UNZ_PARAMERROR;
-
- if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
- return UNZ_PARAMERROR;
-
- s=(unz_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 = unzGetCurrentFileInfo(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
-{
- uLong pos_in_zip_directory; // offset in file
- uLong num_of_file; // # of file
-} unz_file_pos;
-*/
-
-extern int ZEXPORT unzGetFilePos(file, file_pos)
- unzFile file;
- unz_file_pos* file_pos;
-{
- unz_s* s;
-
- if (file==NULL || file_pos==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 unzGoToFilePos(file, file_pos)
- unzFile file;
- unz_file_pos* file_pos;
-{
- unz_s* s;
- int err;
-
- if (file==NULL || file_pos==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 = unzlocal_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;
-}
-
-/*
-// 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 unzlocal_CheckCurrentFileCoherencyHeader (s,piSizeVar,
- poffset_local_extrafield,
- psize_local_extrafield)
- unz_s* s;
- uInt* piSizeVar;
- uLong *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 (ZSEEK(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 (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
- err=UNZ_ERRNO;
- else if (uMagic!=0x04034b50)
- err=UNZ_BADZIPFILE;
- }
-
- if (unzlocal_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 (unzlocal_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
- err=UNZ_ERRNO;
-
- if (unzlocal_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) &&
- (s->cur_file_info.compression_method!=Z_DEFLATED))
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
- err=UNZ_ERRNO;
-
- if (unzlocal_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 (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) &&
- ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
- if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
- err=UNZ_ERRNO;
- else if ((err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) &&
- ((uFlags & 8)==0))
- err=UNZ_BADZIPFILE;
-
-
- if (unzlocal_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 (unzlocal_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 (file, method, level, raw, password)
- unzFile file;
- int* method;
- int* level;
- int raw;
- const char* password;
-{
- int err=UNZ_OK;
- uInt iSizeVar;
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- uLong 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=(unz_s*)file;
- if (!s->current_file_ok)
- return UNZ_PARAMERROR;
-
- if (s->pfile_in_zip_read != NULL)
- unzCloseCurrentFile(file);
-
- if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
- &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
- return UNZ_BADZIPFILE;
-
- pfile_in_zip_read_info = (file_in_zip_read_info_s*)
- ALLOC(sizeof(file_in_zip_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) &&
- (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->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_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 = (voidpf)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=1;
- 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;
-
-# ifndef NOUNCRYPT
- if (password != NULL)
- {
- int i;
- s->pcrc_32_tab = get_crc_table();
- init_keys(password,s->keys,s->pcrc_32_tab);
- if (ZSEEK(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(ZREAD(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 (file)
- unzFile file;
-{
- return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
-}
-
-extern int ZEXPORT unzOpenCurrentFilePassword (file, password)
- unzFile file;
- const char* password;
-{
- return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
-}
-
-extern int ZEXPORT unzOpenCurrentFile2 (file,method,level,raw)
- unzFile file;
- int* method;
- int* level;
- int raw;
-{
- return unzOpenCurrentFile3(file, method, level, raw, NULL);
-}
-
-/*
- 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 (file, buf, len)
- unzFile file;
- voidp buf;
- unsigned len;
-{
- int err=UNZ_OK;
- uInt iRead = 0;
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 (ZSEEK(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 (ZREAD(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->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
- {
- uLong uTotalOutBefore,uTotalOutAfter;
- const Bytef *bufBefore;
- uLong 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->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 (file)
- unzFile file;
-{
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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;
-}
-
-
-/*
- return 1 if the end of file was reached, 0 elsewhere
-*/
-extern int ZEXPORT unzeof (file)
- unzFile file;
-{
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 (file,buf,len)
- unzFile file;
- voidp buf;
- unsigned len;
-{
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- uInt read_now;
- uLong size_to_read;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 (ZSEEK(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 (ZREAD(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 unzipOpenCurrentFile
- Return UNZ_CRCERROR if all the file was read but the CRC is not good
-*/
-extern int ZEXPORT unzCloseCurrentFile (file)
- unzFile file;
-{
- int err=UNZ_OK;
-
- unz_s* s;
- file_in_zip_read_info_s* pfile_in_zip_read_info;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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)
- inflateEnd(&pfile_in_zip_read_info->stream);
-
- 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 (file, szComment, uSizeBuf)
- unzFile file;
- char *szComment;
- uLong uSizeBuf;
-{
- // int err=UNZ_OK; // Unused [Lance]
- unz_s* s;
- uLong uReadThis ;
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- uReadThis = uSizeBuf;
- if (uReadThis>s->gi.size_comment)
- uReadThis = s->gi.size_comment;
-
- if (ZSEEK(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
- return UNZ_ERRNO;
-
- if (uReadThis>0)
- {
- *szComment='\0';
- if (ZREAD(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 uLong ZEXPORT unzGetOffset (file)
- unzFile file;
-{
- unz_s* s;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_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 int ZEXPORT unzSetOffset (file, pos)
- unzFile file;
- uLong pos;
-{
- unz_s* s;
- int err;
-
- if (file==NULL)
- return UNZ_PARAMERROR;
- s=(unz_s*)file;
-
- s->pos_in_central_dir = pos;
- s->num_file = s->gi.number_entry; /* hack */
- err = unzlocal_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;
-}
+/* unzip.c -- IO for uncompress .zip files using zlib
+ Version 1.01e, February 12th, 2005
+
+ Copyright (C) 1998-2005 Gilles Vollant
+
+ Read unzip.h for more info
+*/
+
+/* 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).
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#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_info_internal_s
+{
+ uLong offset_curfile;/* relative offset of local header 4 bytes */
+} unz_file_info_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 */
+
+ uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek*/
+ uLong stream_initialised; /* flag set if stream structure is initialised*/
+
+ uLong offset_local_extrafield;/* offset of the local extra field */
+ uInt size_local_extrafield;/* size of the local extra field */
+ uLong pos_local_extrafield; /* position in the local extra field in read*/
+
+ uLong crc32; /* crc32 of all data uncompressed */
+ uLong crc32_wait; /* crc32 we must obtain after decompress all */
+ uLong rest_read_compressed; /* number of byte to be decompressed */
+ uLong rest_read_uncompressed;/*number of byte to be obtained after decomp*/
+ zlib_filefunc_def z_filefunc;
+ voidpf filestream; /* io structore of the zipfile */
+ uLong compression_method; /* compression method (0==store) */
+ uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
+ int raw;
+} file_in_zip_read_info_s;
+
+
+/* unz_s contain internal information about the zipfile
+*/
+typedef struct
+{
+ zlib_filefunc_def z_filefunc;
+ voidpf filestream; /* io structore of the zipfile */
+ unz_global_info gi; /* public global information */
+ uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
+ uLong num_file; /* number of the current file in the zipfile*/
+ uLong pos_in_central_dir; /* pos of the current file in the central dir*/
+ uLong current_file_ok; /* flag about the usability of the current file*/
+ uLong central_pos; /* position of the beginning of the central dir*/
+
+ uLong size_central_dir; /* size of the central directory */
+ uLong offset_central_dir; /* offset of start of central directory with
+ respect to the starting disk number */
+
+ unz_file_info cur_file_info; /* public info about the current file in zip*/
+ unz_file_info_internal cur_file_info_internal; /* private info about it*/
+ file_in_zip_read_info_s* pfile_in_zip_read; /* structure about the current
+ file if we are decompressing it */
+ int encrypted;
+# ifndef NOUNCRYPT
+ unsigned long keys[3]; /* keys defining the pseudo-random sequence */
+ const unsigned long* pcrc_32_tab;
+# endif
+} unz_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 sucessfully opened for reading.
+*/
+
+
+local int unzlocal_getByte OF((
+ const zlib_filefunc_def* pzlib_filefunc_def,
+ voidpf filestream,
+ int *pi));
+
+local int unzlocal_getByte(pzlib_filefunc_def,filestream,pi)
+ const zlib_filefunc_def* pzlib_filefunc_def;
+ voidpf filestream;
+ int *pi;
+{
+ unsigned char c;
+ int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
+ if (err==1)
+ {
+ *pi = (int)c;
+ return UNZ_OK;
+ }
+ else
+ {
+ if (ZERROR(*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 unzlocal_getShort OF((
+ const zlib_filefunc_def* pzlib_filefunc_def,
+ voidpf filestream,
+ uLong *pX));
+
+local int unzlocal_getShort (pzlib_filefunc_def,filestream,pX)
+ const zlib_filefunc_def* pzlib_filefunc_def;
+ voidpf filestream;
+ uLong *pX;
+{
+ uLong x ;
+ int i;
+ int err;
+
+ err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
+ x = (uLong)i;
+
+ if (err==UNZ_OK)
+ err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
+ x += ((uLong)i)<<8;
+
+ if (err==UNZ_OK)
+ *pX = x;
+ else
+ *pX = 0;
+ return err;
+}
+
+local int unzlocal_getLong OF((
+ const zlib_filefunc_def* pzlib_filefunc_def,
+ voidpf filestream,
+ uLong *pX));
+
+local int unzlocal_getLong (pzlib_filefunc_def,filestream,pX)
+ const zlib_filefunc_def* pzlib_filefunc_def;
+ voidpf filestream;
+ uLong *pX;
+{
+ uLong x ;
+ int i;
+ int err;
+
+ err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
+ x = (uLong)i;
+
+ if (err==UNZ_OK)
+ err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
+ x += ((uLong)i)<<8;
+
+ if (err==UNZ_OK)
+ err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
+ x += ((uLong)i)<<16;
+
+ if (err==UNZ_OK)
+ err = unzlocal_getByte(pzlib_filefunc_def,filestream,&i);
+ x += ((uLong)i)<<24;
+
+ if (err==UNZ_OK)
+ *pX = x;
+ else
+ *pX = 0;
+ return err;
+}
+
+
+/* My own strcmpi / strcasecmp */
+local int strcmpcasenosensitive_internal (fileName1,fileName2)
+ 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 (fileName1,fileName2,iCaseSensitivity)
+ 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 uLong unzlocal_SearchCentralDir OF((
+ const zlib_filefunc_def* pzlib_filefunc_def,
+ voidpf filestream));
+
+local uLong unzlocal_SearchCentralDir(pzlib_filefunc_def,filestream)
+ const zlib_filefunc_def* pzlib_filefunc_def;
+ voidpf filestream;
+{
+ unsigned char* buf;
+ uLong uSizeFile;
+ uLong uBackRead;
+ uLong uMaxBack=0xffff; /* maximum size of global comment */
+ uLong uPosFound=0;
+
+ if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
+ return 0;
+
+
+ uSizeFile = ZTELL(*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,uReadPos ;
+ int i;
+ if (uBackRead+BUFREADCOMMENT>uMaxBack)
+ uBackRead = uMaxBack;
+ else
+ uBackRead+=BUFREADCOMMENT;
+ uReadPos = uSizeFile-uBackRead ;
+
+ uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
+ (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
+ if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
+ break;
+
+ if (ZREAD(*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;
+}
+
+/*
+ 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.
+*/
+extern unzFile ZEXPORT unzOpen2 (path, pzlib_filefunc_def)
+ const char *path;
+ zlib_filefunc_def* pzlib_filefunc_def;
+{
+ unz_s us;
+ unz_s *s;
+ uLong central_pos,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*/
+ uLong 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;
+
+ if (pzlib_filefunc_def==NULL)
+ fill_fopen_filefunc(&us.z_filefunc);
+ else
+ us.z_filefunc = *pzlib_filefunc_def;
+
+ us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque,
+ path,
+ ZLIB_FILEFUNC_MODE_READ |
+ ZLIB_FILEFUNC_MODE_EXISTING);
+ if (us.filestream==NULL)
+ return NULL;
+
+ central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream);
+ if (central_pos==0)
+ err=UNZ_ERRNO;
+
+ if (ZSEEK(us.z_filefunc, us.filestream,
+ central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
+ err=UNZ_ERRNO;
+
+ /* the signature, already checked */
+ if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
+ err=UNZ_ERRNO;
+
+ /* number of this disk */
+ if (unzlocal_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 (unzlocal_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 (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
+ err=UNZ_ERRNO;
+
+ /* total number of entries in the central dir */
+ if (unzlocal_getShort(&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 (unzlocal_getLong(&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 (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
+ err=UNZ_ERRNO;
+
+ /* zipfile comment length */
+ if (unzlocal_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)
+ {
+ ZCLOSE(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=(unz_s*)ALLOC(sizeof(unz_s));
+ *s=us;
+ unzGoToFirstFile((unzFile)s);
+ return (unzFile)s;
+}
+
+
+extern unzFile ZEXPORT unzOpen (path)
+ const char *path;
+{
+ return unzOpen2(path, NULL);
+}
+
+/*
+ Close a ZipFile opened with unzipOpen.
+ If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
+ these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
+ return UNZ_OK if there is no problem. */
+extern int ZEXPORT unzClose (file)
+ unzFile file;
+{
+ unz_s* s;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_s*)file;
+
+ if (s->pfile_in_zip_read!=NULL)
+ unzCloseCurrentFile(file);
+
+ ZCLOSE(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 unzGetGlobalInfo (file,pglobal_info)
+ unzFile file;
+ unz_global_info *pglobal_info;
+{
+ unz_s* s;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_s*)file;
+ *pglobal_info=s->gi;
+ return UNZ_OK;
+}
+
+
+/*
+ Translate date/time from Dos format to tm_unz (readable more easilty)
+*/
+local void unzlocal_DosDateToTmuDate (ulDosDate, ptm)
+ uLong ulDosDate;
+ tm_unz* ptm;
+{
+ uLong uDate;
+ uDate = (uLong)(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 unzlocal_GetCurrentFileInfoInternal OF((unzFile file,
+ unz_file_info *pfile_info,
+ unz_file_info_internal
+ *pfile_info_internal,
+ char *szFileName,
+ uLong fileNameBufferSize,
+ void *extraField,
+ uLong extraFieldBufferSize,
+ char *szComment,
+ uLong commentBufferSize));
+
+local int unzlocal_GetCurrentFileInfoInternal (file,
+ pfile_info,
+ pfile_info_internal,
+ szFileName, fileNameBufferSize,
+ extraField, extraFieldBufferSize,
+ szComment, commentBufferSize)
+ unzFile file;
+ unz_file_info *pfile_info;
+ unz_file_info_internal *pfile_info_internal;
+ char *szFileName;
+ uLong fileNameBufferSize;
+ void *extraField;
+ uLong extraFieldBufferSize;
+ char *szComment;
+ uLong commentBufferSize;
+{
+ unz_s* s;
+ unz_file_info file_info;
+ unz_file_info_internal file_info_internal;
+ int err=UNZ_OK;
+ uLong uMagic;
+ long lSeek=0;
+
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_s*)file;
+ if (ZSEEK(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 (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
+ err=UNZ_ERRNO;
+ else if (uMagic!=0x02014b50)
+ err=UNZ_BADZIPFILE;
+ }
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ 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 (ZREAD(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
+ err=UNZ_ERRNO;
+ lSeek -= uSizeRead;
+ }
+
+
+ if ((err==UNZ_OK) && (extraField!=NULL))
+ {
+ uLong uSizeRead ;
+ if (file_info.size_file_extra<extraFieldBufferSize)
+ uSizeRead = file_info.size_file_extra;
+ else
+ uSizeRead = extraFieldBufferSize;
+
+ if (lSeek!=0) {
+ if (ZSEEK(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 (ZREAD(s->z_filefunc, s->filestream,extraField,uSizeRead)!=uSizeRead)
+ err=UNZ_ERRNO;
+ lSeek += file_info.size_file_extra - uSizeRead;
+ }
+ else
+ lSeek+=file_info.size_file_extra;
+
+
+ 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 (ZSEEK(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 (ZREAD(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 unzGetCurrentFileInfo (file,
+ pfile_info,
+ szFileName, fileNameBufferSize,
+ extraField, extraFieldBufferSize,
+ szComment, commentBufferSize)
+ unzFile file;
+ unz_file_info *pfile_info;
+ char *szFileName;
+ uLong fileNameBufferSize;
+ void *extraField;
+ uLong extraFieldBufferSize;
+ char *szComment;
+ uLong commentBufferSize;
+{
+ return unzlocal_GetCurrentFileInfoInternal(file,pfile_info,NULL,
+ szFileName,fileNameBufferSize,
+ extraField,extraFieldBufferSize,
+ szComment,commentBufferSize);
+}
+
+/*
+ Set the current file of the zipfile to the first file.
+ return UNZ_OK if there is no problem
+*/
+extern int ZEXPORT unzGoToFirstFile (file)
+ unzFile file;
+{
+ int err=UNZ_OK;
+ unz_s* s;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_s*)file;
+ s->pos_in_central_dir=s->offset_central_dir;
+ s->num_file=0;
+ err=unzlocal_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 (file)
+ unzFile file;
+{
+ unz_s* s;
+ int err;
+
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 = unzlocal_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 unzipStringFileNameCompare
+
+ 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 (file, szFileName, iCaseSensitivity)
+ unzFile file;
+ const char *szFileName;
+ int iCaseSensitivity;
+{
+ unz_s* s;
+ int err;
+
+ /* We remember the 'current' position in the file so that we can jump
+ * back there if we fail.
+ */
+ unz_file_info cur_file_infoSaved;
+ unz_file_info_internal cur_file_info_internalSaved;
+ uLong num_fileSaved;
+ uLong pos_in_central_dirSaved;
+
+
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+
+ if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
+ return UNZ_PARAMERROR;
+
+ s=(unz_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 = unzGetCurrentFileInfo(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
+{
+ uLong pos_in_zip_directory; // offset in file
+ uLong num_of_file; // # of file
+} unz_file_pos;
+*/
+
+extern int ZEXPORT unzGetFilePos(file, file_pos)
+ unzFile file;
+ unz_file_pos* file_pos;
+{
+ unz_s* s;
+
+ if (file==NULL || file_pos==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 unzGoToFilePos(file, file_pos)
+ unzFile file;
+ unz_file_pos* file_pos;
+{
+ unz_s* s;
+ int err;
+
+ if (file==NULL || file_pos==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 = unzlocal_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;
+}
+
+/*
+// 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 unzlocal_CheckCurrentFileCoherencyHeader (s,piSizeVar,
+ poffset_local_extrafield,
+ psize_local_extrafield)
+ unz_s* s;
+ uInt* piSizeVar;
+ uLong *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 (ZSEEK(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 (unzlocal_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
+ err=UNZ_ERRNO;
+ else if (uMagic!=0x04034b50)
+ err=UNZ_BADZIPFILE;
+ }
+
+ if (unzlocal_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 (unzlocal_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
+ err=UNZ_ERRNO;
+
+ if (unzlocal_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) &&
+ (s->cur_file_info.compression_method!=Z_DEFLATED))
+ err=UNZ_BADZIPFILE;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
+ err=UNZ_ERRNO;
+
+ if (unzlocal_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 (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
+ err=UNZ_ERRNO;
+ else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) &&
+ ((uFlags & 8)==0))
+ err=UNZ_BADZIPFILE;
+
+ if (unzlocal_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
+ err=UNZ_ERRNO;
+ else if ((err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) &&
+ ((uFlags & 8)==0))
+ err=UNZ_BADZIPFILE;
+
+
+ if (unzlocal_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 (unzlocal_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 (file, method, level, raw, password)
+ unzFile file;
+ int* method;
+ int* level;
+ int raw;
+ const char* password;
+{
+ int err=UNZ_OK;
+ uInt iSizeVar;
+ unz_s* s;
+ file_in_zip_read_info_s* pfile_in_zip_read_info;
+ uLong 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=(unz_s*)file;
+ if (!s->current_file_ok)
+ return UNZ_PARAMERROR;
+
+ if (s->pfile_in_zip_read != NULL)
+ unzCloseCurrentFile(file);
+
+ if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
+ &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
+ return UNZ_BADZIPFILE;
+
+ pfile_in_zip_read_info = (file_in_zip_read_info_s*)
+ ALLOC(sizeof(file_in_zip_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) &&
+ (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->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_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 = (voidpf)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=1;
+ 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;
+
+# ifndef NOUNCRYPT
+ if (password != NULL)
+ {
+ int i;
+ s->pcrc_32_tab = get_crc_table();
+ init_keys(password,s->keys,s->pcrc_32_tab);
+ if (ZSEEK(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(ZREAD(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 (file)
+ unzFile file;
+{
+ return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
+}
+
+extern int ZEXPORT unzOpenCurrentFilePassword (file, password)
+ unzFile file;
+ const char* password;
+{
+ return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
+}
+
+extern int ZEXPORT unzOpenCurrentFile2 (file,method,level,raw)
+ unzFile file;
+ int* method;
+ int* level;
+ int raw;
+{
+ return unzOpenCurrentFile3(file, method, level, raw, NULL);
+}
+
+/*
+ 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 (file, buf, len)
+ unzFile file;
+ voidp buf;
+ unsigned len;
+{
+ int err=UNZ_OK;
+ uInt iRead = 0;
+ unz_s* s;
+ file_in_zip_read_info_s* pfile_in_zip_read_info;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 (ZSEEK(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 (ZREAD(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->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
+ {
+ uLong uTotalOutBefore,uTotalOutAfter;
+ const Bytef *bufBefore;
+ uLong 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->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 (file)
+ unzFile file;
+{
+ unz_s* s;
+ file_in_zip_read_info_s* pfile_in_zip_read_info;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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;
+}
+
+
+/*
+ return 1 if the end of file was reached, 0 elsewhere
+*/
+extern int ZEXPORT unzeof (file)
+ unzFile file;
+{
+ unz_s* s;
+ file_in_zip_read_info_s* pfile_in_zip_read_info;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 (file,buf,len)
+ unzFile file;
+ voidp buf;
+ unsigned len;
+{
+ unz_s* s;
+ file_in_zip_read_info_s* pfile_in_zip_read_info;
+ uInt read_now;
+ uLong size_to_read;
+
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 (ZSEEK(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 (ZREAD(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 unzipOpenCurrentFile
+ Return UNZ_CRCERROR if all the file was read but the CRC is not good
+*/
+extern int ZEXPORT unzCloseCurrentFile (file)
+ unzFile file;
+{
+ int err=UNZ_OK;
+
+ unz_s* s;
+ file_in_zip_read_info_s* pfile_in_zip_read_info;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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)
+ inflateEnd(&pfile_in_zip_read_info->stream);
+
+ 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 (file, szComment, uSizeBuf)
+ unzFile file;
+ char *szComment;
+ uLong uSizeBuf;
+{
+ // int err=UNZ_OK; // Unused [Lance]
+ unz_s* s;
+ uLong uReadThis ;
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_s*)file;
+
+ uReadThis = uSizeBuf;
+ if (uReadThis>s->gi.size_comment)
+ uReadThis = s->gi.size_comment;
+
+ if (ZSEEK(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
+ return UNZ_ERRNO;
+
+ if (uReadThis>0)
+ {
+ *szComment='\0';
+ if (ZREAD(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 uLong ZEXPORT unzGetOffset (file)
+ unzFile file;
+{
+ unz_s* s;
+
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_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 int ZEXPORT unzSetOffset (file, pos)
+ unzFile file;
+ uLong pos;
+{
+ unz_s* s;
+ int err;
+
+ if (file==NULL)
+ return UNZ_PARAMERROR;
+ s=(unz_s*)file;
+
+ s->pos_in_central_dir = pos;
+ s->num_file = s->gi.number_entry; /* hack */
+ err = unzlocal_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;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-20 15:49:13 +0000