unzip.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "unzip.h"
#include <errno.h>

Go to the source code of this file.

Classes
struct	unz_file_info64_internal_s
struct	file_in_zip64_read_info_s
struct	unz64_s

Macros
#define	NOUNCRYPT
#define	local   static
#define	CASESENSITIVITYDEFAULT_NO
#define	UNZ_BUFSIZE   (16384)
#define	UNZ_MAXFILENAMEINZIP   (256)
#define	ALLOC(size)   (malloc(size))
#define	TRYFREE(p)   {if (p) free(p);}
#define	SIZECENTRALDIRITEM   (0x2e)
#define	SIZEZIPLOCALHEADER   (0x1e)
#define	CASESENSITIVITYDEFAULTVALUE   2
#define	STRCMPCASENOSENTIVEFUNCTION   strcmpcasenosensitive_internal
#define	BUFREADCOMMENT   (0x400)

Typedefs
typedef struct unz_file_info64_internal_s	unz_file_info64_internal

Functions
int unz64local_getByte	OF ((const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, int *pi))
int	unz64local_getByte (const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, int *pi)
int unz64local_getShort	OF ((const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uLong *pX))
int	unz64local_getShort (const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uLong *pX)
int	unz64local_getLong (const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uLong *pX)
int unz64local_getLong64	OF ((const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX))
int	unz64local_getLong64 (const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX)
int	strcmpcasenosensitive_internal (const char *fileName1, const char *fileName2)
int ZEXPORT	unzStringFileNameCompare (const char *fileName1, const char *fileName2, int iCaseSensitivity)
ZPOS64_T unz64local_SearchCentralDir	OF ((const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream))
ZPOS64_T	unz64local_SearchCentralDir (const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream)
ZPOS64_T	unz64local_SearchCentralDir64 (const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream)
unzFile	unzOpenInternal (const void *path, zlib_filefunc64_32_def *pzlib_filefunc64_32_def, int is64bitOpenFunction)
unzFile ZEXPORT	unzOpen2 (const char *path, zlib_filefunc_def *pzlib_filefunc32_def)
unzFile ZEXPORT	unzOpen2_64 (const void *path, zlib_filefunc64_def *pzlib_filefunc_def)
unzFile ZEXPORT	unzOpen (const char *path)
unzFile ZEXPORT	unzOpen64 (const void *path)
int ZEXPORT	unzClose (unzFile file)
int ZEXPORT	unzGetGlobalInfo64 (unzFile file, unz_global_info64 *pglobal_info)
int ZEXPORT	unzGetGlobalInfo (unzFile file, unz_global_info *pglobal_info32)
void	unz64local_DosDateToTmuDate (ZPOS64_T ulDosDate, tm_unz *ptm)
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))
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)
int ZEXPORT	unzGetCurrentFileInfo64 (unzFile file, unz_file_info64 *pfile_info, char *szFileName, uLong fileNameBufferSize, void *extraField, uLong extraFieldBufferSize, char *szComment, uLong commentBufferSize)
int ZEXPORT	unzGetCurrentFileInfo (unzFile file, unz_file_info *pfile_info, char *szFileName, uLong fileNameBufferSize, void *extraField, uLong extraFieldBufferSize, char *szComment, uLong commentBufferSize)
int ZEXPORT	unzGoToFirstFile (unzFile file)
int ZEXPORT	unzGoToNextFile (unzFile file)
int ZEXPORT	unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity)
int ZEXPORT	unzGetFilePos64 (unzFile file, unz64_file_pos *file_pos)
int ZEXPORT	unzGetFilePos (unzFile file, unz_file_pos *file_pos)
int ZEXPORT	unzGoToFilePos64 (unzFile file, const unz64_file_pos *file_pos)
int ZEXPORT	unzGoToFilePos (unzFile file, unz_file_pos *file_pos)
int	unz64local_CheckCurrentFileCoherencyHeader (unz64_s *s, uInt *piSizeVar, ZPOS64_T *poffset_local_extrafield, uInt *psize_local_extrafield)
int ZEXPORT	unzOpenCurrentFile3 (unzFile file, int *method, int *level, int raw, const char *password)
int ZEXPORT	unzOpenCurrentFile (unzFile file)
int ZEXPORT	unzOpenCurrentFilePassword (unzFile file, const char *password)
int ZEXPORT	unzOpenCurrentFile2 (unzFile file, int *method, int *level, int raw)
ZPOS64_T ZEXPORT	unzGetCurrentFileZStreamPos64 (unzFile file)
int ZEXPORT	unzReadCurrentFile (unzFile file, voidp buf, unsigned len)
z_off_t ZEXPORT	unztell (unzFile file)
ZPOS64_T ZEXPORT	unztell64 (unzFile file)
int ZEXPORT	unzeof (unzFile file)
int ZEXPORT	unzGetLocalExtrafield (unzFile file, voidp buf, unsigned len)
int ZEXPORT	unzCloseCurrentFile (unzFile file)
int ZEXPORT	unzGetGlobalComment (unzFile file, char *szComment, uLong uSizeBuf)
ZPOS64_T ZEXPORT	unzGetOffset64 (unzFile file)
uLong ZEXPORT	unzGetOffset (unzFile file)
int ZEXPORT	unzSetOffset64 (unzFile file, ZPOS64_T pos)
int ZEXPORT	unzSetOffset (unzFile file, uLong pos)

Variables
const char	unz_copyright []

Macro Definition Documentation

ALLOC

#define ALLOC

(

size

)

(malloc(size))

Definition at line 112 of file unzip.c.

BUFREADCOMMENT

#define BUFREADCOMMENT   (0x400)

Definition at line 405 of file unzip.c.

CASESENSITIVITYDEFAULT_NO

#define CASESENSITIVITYDEFAULT_NO

Definition at line 98 of file unzip.c.

CASESENSITIVITYDEFAULTVALUE

#define CASESENSITIVITYDEFAULTVALUE   2

Definition at line 372 of file unzip.c.

local

#define local   static

Definition at line 91 of file unzip.c.

NOUNCRYPT

#define NOUNCRYPT

Definition at line 72 of file unzip.c.

SIZECENTRALDIRITEM

#define SIZECENTRALDIRITEM   (0x2e)

Definition at line 118 of file unzip.c.

SIZEZIPLOCALHEADER

#define SIZEZIPLOCALHEADER   (0x1e)

Definition at line 119 of file unzip.c.

STRCMPCASENOSENTIVEFUNCTION

#define STRCMPCASENOSENTIVEFUNCTION   strcmpcasenosensitive_internal

Definition at line 378 of file unzip.c.

TRYFREE

#define TRYFREE

(

p

)

{if (p) free(p);}

Definition at line 115 of file unzip.c.

UNZ_BUFSIZE

#define UNZ_BUFSIZE   (16384)

Definition at line 104 of file unzip.c.

UNZ_MAXFILENAMEINZIP

#define UNZ_MAXFILENAMEINZIP   (256)

Definition at line 108 of file unzip.c.

Typedef Documentation

unz_file_info64_internal

typedef struct unz_file_info64_internal_s unz_file_info64_internal

Function Documentation

OF() [1/5]

ZPOS64_T unz64local_SearchCentralDir OF

(

(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream)

)

OF() [2/5]

int unz64local_getByte OF

(

(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, int *pi)

)

OF() [3/5]

int unz64local_getShort OF

(

(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uLong *pX)

)

OF() [4/5]

int unz64local_getLong64 OF

(

(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX)

)

OF() [5/5]

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)

)

strcmpcasenosensitive_internal()

int strcmpcasenosensitive_internal	(	const char *	fileName1,
		const char *	fileName2
	)

Definition at line 349 of file unzip.c.

{
    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;
    }
}

References c1, and c2.

unz64local_CheckCurrentFileCoherencyHeader()

int unz64local_CheckCurrentFileCoherencyHeader	(	unz64_s *	s,
		uInt *	piSizeVar,
		ZPOS64_T *	poffset_local_extrafield,
		uInt *	psize_local_extrafield
	)

Definition at line 1385 of file unzip.c.

{
    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;
}

References err, s, SIZEZIPLOCALHEADER, unz64local_getLong(), unz64local_getShort(), UNZ_BADZIPFILE, UNZ_ERRNO, UNZ_OK, Z_BZIP2ED, Z_DEFLATED, ZLIB_FILEFUNC_SEEK_SET, and ZSEEK64.

Referenced by unzOpenCurrentFile3().

unz64local_DosDateToTmuDate()

void unz64local_DosDateToTmuDate	(	ZPOS64_T	ulDosDate,
		tm_unz *	ptm
	)

Definition at line 852 of file unzip.c.

{
    ZPOS64_T uDate;
    uDate = (ZPOS64_T)(ulDosDate>>16);
    ptm->tm_mday = (int)(uDate&0x1f) ;
    ptm->tm_mon =  (int)((((uDate)&0x1E0)/0x20)-1) ;
    ptm->tm_year = (int)(((uDate&0x0FE00)/0x0200)+1980) ;
 
    ptm->tm_hour = (int) ((ulDosDate &0xF800)/0x800);
    ptm->tm_min =  (int) ((ulDosDate&0x7E0)/0x20) ;
    ptm->tm_sec =  (int) (2*(ulDosDate&0x1f)) ;
}

References int, tm_unz_s::tm_hour, tm_unz_s::tm_mday, tm_unz_s::tm_min, tm_unz_s::tm_mon, tm_unz_s::tm_sec, and tm_unz_s::tm_year.

Referenced by unz64local_GetCurrentFileInfoInternal().

unz64local_getByte()

int unz64local_getByte	(	const zlib_filefunc64_32_def *	pzlib_filefunc_def,
		voidpf	filestream,
		int *	pi
	)

Definition at line 212 of file unzip.c.

{
    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;
    }
}

References c, err, int, UNZ_EOF, UNZ_ERRNO, UNZ_OK, ZERROR64, and ZREAD64.

Referenced by unz64local_getLong(), unz64local_getLong64(), and unz64local_getShort().

unz64local_GetCurrentFileInfoInternal()

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
	)

Definition at line 879 of file unzip.c.

{
    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,(ZPOS64_T)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,(ZPOS64_T)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,(ZPOS64_T)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;
}

References unz_file_info64_s::compressed_size, unz_file_info64_s::compression_method, unz_file_info64_s::crc, unz_file_info64_s::disk_num_start, unz_file_info64_s::dosDate, err, unz_file_info64_s::external_fa, unz_file_info64_s::flag, unz_file_info64_s::internal_fa, MAXU32, NULL, unz_file_info64_internal_s::offset_curfile, s, unz_file_info64_s::size_file_comment, unz_file_info64_s::size_file_extra, unz_file_info64_s::size_filename, unz_file_info64_s::tmu_date, unz_file_info64_s::uncompressed_size, unz64local_DosDateToTmuDate(), unz64local_getLong(), unz64local_getLong64(), unz64local_getShort(), UNZ_BADZIPFILE, UNZ_ERRNO, UNZ_OK, UNZ_PARAMERROR, unz_file_info64_s::version, unz_file_info64_s::version_needed, ZLIB_FILEFUNC_SEEK_CUR, ZLIB_FILEFUNC_SEEK_SET, ZREAD64, and ZSEEK64.

Referenced by unzGetCurrentFileInfo(), unzGetCurrentFileInfo64(), unzGoToFilePos64(), unzGoToFirstFile(), unzGoToNextFile(), and unzSetOffset64().

unz64local_getLong()

int unz64local_getLong	(	const zlib_filefunc64_32_def *	pzlib_filefunc_def,
		voidpf	filestream,
		uLong *	pX
	)

Definition at line 266 of file unzip.c.

{
    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;
}

References err, i, unz64local_getByte(), UNZ_OK, and x.

Referenced by unz64local_CheckCurrentFileCoherencyHeader(), unz64local_GetCurrentFileInfoInternal(), unz64local_SearchCentralDir64(), and unzOpenInternal().

unz64local_getLong64()

int unz64local_getLong64	(	const zlib_filefunc64_32_def *	pzlib_filefunc_def,
		voidpf	filestream,
		ZPOS64_T *	pX
	)

Definition at line 302 of file unzip.c.

{
    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;
}

References err, i, unz64local_getByte(), UNZ_OK, and x.

Referenced by unz64local_GetCurrentFileInfoInternal(), unz64local_SearchCentralDir64(), and unzOpenInternal().

unz64local_getShort()

int unz64local_getShort	(	const zlib_filefunc64_32_def *	pzlib_filefunc_def,
		voidpf	filestream,
		uLong *	pX
	)

Definition at line 239 of file unzip.c.

{
    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;
}

References err, i, unz64local_getByte(), UNZ_OK, and x.

Referenced by unz64local_CheckCurrentFileCoherencyHeader(), unz64local_GetCurrentFileInfoInternal(), and unzOpenInternal().

unz64local_SearchCentralDir()

ZPOS64_T unz64local_SearchCentralDir	(	const zlib_filefunc64_32_def *	pzlib_filefunc_def,
		voidpf	filestream
	)

Definition at line 413 of file unzip.c.

{
    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+(unsigned)i;
                break;
            }
 
        if (uPosFound!=0)
            break;
    }
    TRYFREE(buf);
    return uPosFound;
}

References ALLOC, BUFREADCOMMENT, i, NULL, TRYFREE, unsigned, ZLIB_FILEFUNC_SEEK_END, ZLIB_FILEFUNC_SEEK_SET, ZREAD64, ZSEEK64, and ZTELL64.

Referenced by unzOpenInternal().

unz64local_SearchCentralDir64()

ZPOS64_T unz64local_SearchCentralDir64	(	const zlib_filefunc64_32_def *	pzlib_filefunc_def,
		voidpf	filestream
	)

Definition at line 478 of file unzip.c.

{
    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+(unsigned)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;
}

References ALLOC, BUFREADCOMMENT, i, NULL, TRYFREE, unsigned, unz64local_getLong(), unz64local_getLong64(), UNZ_OK, ZLIB_FILEFUNC_SEEK_END, ZLIB_FILEFUNC_SEEK_SET, ZREAD64, ZSEEK64, and ZTELL64.

Referenced by unzOpenInternal().

unzClose()

int ZEXPORT unzClose

(

unzFile

file

)

Definition at line 808 of file unzip.c.

{
    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;
}

References NULL, s, TRYFREE, UNZ_OK, UNZ_PARAMERROR, unzCloseCurrentFile(), and ZCLOSE64.

Referenced by main().

unzCloseCurrentFile()

int ZEXPORT unzCloseCurrentFile

(

unzFile

file

)

Definition at line 2007 of file unzip.c.

{
    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;
}

References file_in_zip64_read_info_s::crc32, file_in_zip64_read_info_s::crc32_wait, err, inflateEnd(), NULL, file_in_zip64_read_info_s::raw, file_in_zip64_read_info_s::read_buffer, file_in_zip64_read_info_s::rest_read_uncompressed, s, file_in_zip64_read_info_s::stream, file_in_zip64_read_info_s::stream_initialised, TRYFREE, UNZ_CRCERROR, UNZ_OK, UNZ_PARAMERROR, Z_BZIP2ED, and Z_DEFLATED.

Referenced by do_extract_currentfile(), unzClose(), and unzOpenCurrentFile3().

unzeof()

int ZEXPORT unzeof

(

unzFile

file

)

Definition at line 1927 of file unzip.c.

{
    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;
}

References NULL, file_in_zip64_read_info_s::rest_read_uncompressed, s, and UNZ_PARAMERROR.

unzGetCurrentFileInfo()

int ZEXPORT unzGetCurrentFileInfo	(	unzFile	file,
		unz_file_info *	pfile_info,
		char *	szFileName,
		uLong	fileNameBufferSize,
		void *	extraField,
		uLong	extraFieldBufferSize,
		char *	szComment,
		uLong	commentBufferSize
	)

Definition at line 1136 of file unzip.c.

{
    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;
}

References unz_file_info64_s::compressed_size, unz_file_info_s::compressed_size, unz_file_info64_s::compression_method, unz_file_info_s::compression_method, unz_file_info64_s::crc, unz_file_info_s::crc, unz_file_info64_s::disk_num_start, unz_file_info_s::disk_num_start, unz_file_info64_s::dosDate, unz_file_info_s::dosDate, err, unz_file_info64_s::external_fa, unz_file_info_s::external_fa, unz_file_info64_s::flag, unz_file_info_s::flag, unz_file_info64_s::internal_fa, unz_file_info_s::internal_fa, NULL, unz_file_info64_s::size_file_comment, unz_file_info_s::size_file_comment, unz_file_info64_s::size_file_extra, unz_file_info_s::size_file_extra, unz_file_info64_s::size_filename, unz_file_info_s::size_filename, unz_file_info64_s::tmu_date, unz_file_info_s::tmu_date, unz_file_info64_s::uncompressed_size, unz_file_info_s::uncompressed_size, unz64local_GetCurrentFileInfoInternal(), UNZ_OK, unz_file_info64_s::version, unz_file_info_s::version, unz_file_info64_s::version_needed, and unz_file_info_s::version_needed.

unzGetCurrentFileInfo64()

int ZEXPORT unzGetCurrentFileInfo64	(	unzFile	file,
		unz_file_info64 *	pfile_info,
		char *	szFileName,
		uLong	fileNameBufferSize,
		void *	extraField,
		uLong	extraFieldBufferSize,
		char *	szComment,
		uLong	commentBufferSize
	)

Definition at line 1124 of file unzip.c.

{
    return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL,
                                                szFileName,fileNameBufferSize,
                                                extraField,extraFieldBufferSize,
                                                szComment,commentBufferSize);
}

References NULL, and unz64local_GetCurrentFileInfoInternal().

Referenced by do_extract_currentfile(), do_list(), and unzLocateFile().

unzGetCurrentFileZStreamPos64()

ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64

(

unzFile

file

)

Addition for GDAL : START

Definition at line 1658 of file unzip.c.

{
    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;
}

References file_in_zip64_read_info_s::byte_before_the_zipfile, NULL, file_in_zip64_read_info_s::pos_in_zipfile, and s.

unzGetFilePos()

int ZEXPORT unzGetFilePos	(	unzFile	file,
		unz_file_pos *	file_pos
	)

Definition at line 1324 of file unzip.c.

{
    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;
}

References err, unz_file_pos_s::num_of_file, unz64_file_pos_s::num_of_file, unz_file_pos_s::pos_in_zip_directory, unz64_file_pos_s::pos_in_zip_directory, UNZ_OK, and unzGetFilePos64().

unzGetFilePos64()

int ZEXPORT unzGetFilePos64	(	unzFile	file,
		unz64_file_pos *	file_pos
	)

Definition at line 1308 of file unzip.c.

{
    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;
}

References NULL, unz64_file_pos_s::num_of_file, unz64_file_pos_s::pos_in_zip_directory, s, UNZ_END_OF_LIST_OF_FILE, UNZ_OK, and UNZ_PARAMERROR.

Referenced by unzGetFilePos().

unzGetGlobalComment()

int ZEXPORT unzGetGlobalComment	(	unzFile	file,
		char *	szComment,
		uLong	uSizeBuf
	)

Definition at line 2054 of file unzip.c.

{
    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;
}

References NULL, s, UNZ_ERRNO, UNZ_PARAMERROR, ZLIB_FILEFUNC_SEEK_SET, ZREAD64, and ZSEEK64.

unzGetGlobalInfo()

int ZEXPORT unzGetGlobalInfo	(	unzFile	file,
		unz_global_info *	pglobal_info32
	)

Definition at line 838 of file unzip.c.

{
    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;
}

References NULL, unz_global_info_s::number_entry, s, unz_global_info_s::size_comment, UNZ_OK, and UNZ_PARAMERROR.

unzGetGlobalInfo64()

int ZEXPORT unzGetGlobalInfo64	(	unzFile	file,
		unz_global_info64 *	pglobal_info
	)

Definition at line 828 of file unzip.c.

{
    unz64_s* s;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    *pglobal_info=s->gi;
    return UNZ_OK;
}

References NULL, s, UNZ_OK, and UNZ_PARAMERROR.

Referenced by do_extract(), and do_list().

unzGetLocalExtrafield()

int ZEXPORT unzGetLocalExtrafield	(	unzFile	file,
		voidp	buf,
		unsigned	len
	)

Definition at line 1959 of file unzip.c.

{
    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;
}

References file_in_zip64_read_info_s::filestream, len, NULL, file_in_zip64_read_info_s::offset_local_extrafield, file_in_zip64_read_info_s::pos_local_extrafield, s, file_in_zip64_read_info_s::size_local_extrafield, UNZ_ERRNO, UNZ_PARAMERROR, file_in_zip64_read_info_s::z_filefunc, ZLIB_FILEFUNC_SEEK_SET, ZREAD64, and ZSEEK64.

unzGetOffset()

uLong ZEXPORT unzGetOffset

(

unzFile

file

)

Definition at line 2097 of file unzip.c.

{
    ZPOS64_T offset64;
 
    if (file==NULL)
          return 0; //UNZ_PARAMERROR;
    offset64 = unzGetOffset64(file);
    return (uLong)offset64;
}

References NULL, and unzGetOffset64().

unzGetOffset64()

ZPOS64_T ZEXPORT unzGetOffset64

(

unzFile

file

)

Definition at line 2082 of file unzip.c.

{
    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;
}

References NULL, and s.

Referenced by unzGetOffset().

unzGoToFilePos()

int ZEXPORT unzGoToFilePos	(	unzFile	file,
		unz_file_pos *	file_pos
	)

Definition at line 1360 of file unzip.c.

{
    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);
}

References NULL, unz_file_pos_s::num_of_file, unz64_file_pos_s::num_of_file, unz_file_pos_s::pos_in_zip_directory, unz64_file_pos_s::pos_in_zip_directory, UNZ_PARAMERROR, and unzGoToFilePos64().

unzGoToFilePos64()

int ZEXPORT unzGoToFilePos64	(	unzFile	file,
		const unz64_file_pos *	file_pos
	)

Definition at line 1338 of file unzip.c.

{
    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;
}

References err, NULL, unz64_file_pos_s::num_of_file, unz64_file_pos_s::pos_in_zip_directory, s, unz64local_GetCurrentFileInfoInternal(), UNZ_OK, and UNZ_PARAMERROR.

Referenced by unzGoToFilePos().

unzGoToFirstFile()

int ZEXPORT unzGoToFirstFile

(

unzFile

file

)

Definition at line 1178 of file unzip.c.

{
    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;
}

References err, NULL, s, unz64local_GetCurrentFileInfoInternal(), UNZ_OK, and UNZ_PARAMERROR.

Referenced by unzLocateFile(), and unzOpenInternal().

unzGoToNextFile()

int ZEXPORT unzGoToNextFile

(

unzFile

file

)

Definition at line 1199 of file unzip.c.

{
    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;
}

References err, NULL, s, SIZECENTRALDIRITEM, unz64local_GetCurrentFileInfoInternal(), UNZ_END_OF_LIST_OF_FILE, UNZ_OK, and UNZ_PARAMERROR.

Referenced by do_extract(), do_list(), and unzLocateFile().

unzLocateFile()

int ZEXPORT unzLocateFile	(	unzFile	file,
		const char *	szFileName,
		int	iCaseSensitivity
	)

Definition at line 1232 of file unzip.c.

{
    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;
}

References err, NULL, s, UNZ_END_OF_LIST_OF_FILE, UNZ_MAXFILENAMEINZIP, UNZ_OK, UNZ_PARAMERROR, unzGetCurrentFileInfo64(), unzGoToFirstFile(), unzGoToNextFile(), and unzStringFileNameCompare().

Referenced by do_extract_onefile().

unzOpen()

unzFile ZEXPORT unzOpen

(

const char *

path

)

Definition at line 793 of file unzip.c.

{
    return unzOpenInternal(path, NULL, 0);
}

References NULL, path, and unzOpenInternal().

unzOpen2()

unzFile ZEXPORT unzOpen2	(	const char *	path,
		zlib_filefunc_def *	pzlib_filefunc32_def
	)

Definition at line 765 of file unzip.c.

{
    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);
}

References fill_zlib_filefunc64_32_def_from_filefunc32(), NULL, path, and unzOpenInternal().

unzOpen2_64()

unzFile ZEXPORT unzOpen2_64	(	const void *	path,
		zlib_filefunc64_def *	pzlib_filefunc_def
	)

Definition at line 778 of file unzip.c.

{
    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);
}

References NULL, path, unzOpenInternal(), zlib_filefunc64_32_def_s::zfile_func64, zlib_filefunc64_32_def_s::zseek32_file, and zlib_filefunc64_32_def_s::ztell32_file.

Referenced by main().

unzOpen64()

unzFile ZEXPORT unzOpen64

(

const void *

path

)

Definition at line 798 of file unzip.c.

{
    return unzOpenInternal(path, NULL, 1);
}

References NULL, path, and unzOpenInternal().

Referenced by main().

unzOpenCurrentFile()

int ZEXPORT unzOpenCurrentFile

(

unzFile

file

)

Definition at line 1641 of file unzip.c.

{
    return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
}

References NULL, and unzOpenCurrentFile3().

unzOpenCurrentFile2()

int ZEXPORT unzOpenCurrentFile2	(	unzFile	file,
		int *	method,
		int *	level,
		int	raw
	)

Definition at line 1651 of file unzip.c.

{
    return unzOpenCurrentFile3(file, method, level, raw, NULL);
}

References level, NULL, and unzOpenCurrentFile3().

unzOpenCurrentFile3()

int ZEXPORT unzOpenCurrentFile3	(	unzFile	file,
		int *	method,
		int *	level,
		int	raw,
		const char *	password
	)

Definition at line 1472 of file unzip.c.

{
    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;
}

References ALLOC, z_stream_s::avail_in, file_in_zip64_read_info_s::byte_before_the_zipfile, file_in_zip64_read_info_s::compression_method, file_in_zip64_read_info_s::crc32, file_in_zip64_read_info_s::crc32_wait, err, file_in_zip64_read_info_s::filestream, get_crc_table(), i, if(), inflateInit2, init_keys(), int, level, MAX_WBITS, z_stream_s::next_in, NULL, file_in_zip64_read_info_s::offset_local_extrafield, z_stream_s::opaque, file_in_zip64_read_info_s::pos_in_zipfile, file_in_zip64_read_info_s::pos_local_extrafield, file_in_zip64_read_info_s::raw, file_in_zip64_read_info_s::read_buffer, file_in_zip64_read_info_s::rest_read_compressed, file_in_zip64_read_info_s::rest_read_uncompressed, s, SEEK_SET, file_in_zip64_read_info_s::size_local_extrafield, SIZEZIPLOCALHEADER, source, file_in_zip64_read_info_s::stream, file_in_zip64_read_info_s::stream_initialised, z_stream_s::total_out, file_in_zip64_read_info_s::total_out_64, TRYFREE, unz64local_CheckCurrentFileCoherencyHeader(), UNZ_BADZIPFILE, UNZ_BUFSIZE, UNZ_INTERNALERROR, UNZ_OK, UNZ_PARAMERROR, unzCloseCurrentFile(), Z_BZIP2ED, Z_DEFLATED, file_in_zip64_read_info_s::z_filefunc, Z_OK, z_stream_s::zalloc, zdecode, z_stream_s::zfree, ZREAD64, and ZSEEK64.

Referenced by unzOpenCurrentFile(), unzOpenCurrentFile2(), and unzOpenCurrentFilePassword().

unzOpenCurrentFilePassword()

int ZEXPORT unzOpenCurrentFilePassword	(	unzFile	file,
		const char *	password
	)

Definition at line 1646 of file unzip.c.

{
    return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
}

References NULL, and unzOpenCurrentFile3().

Referenced by do_extract_currentfile().

unzOpenInternal()

unzFile unzOpenInternal	(	const void *	path,
		zlib_filefunc64_32_def *	pzlib_filefunc64_32_def,
		int	is64bitOpenFunction
	)

Definition at line 584 of file unzip.c.

{
    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;
}

References ALLOC, unz64_s::byte_before_the_zipfile, unz64_s::central_pos, unz64_s::encrypted, err, unz64_s::filestream, fill_fopen64_filefunc(), unz64_s::gi, unz64_s::is64bitOpenFunction, unz64_s::isZip64, NULL, unz_global_info64_s::number_entry, unz64_s::offset_central_dir, path, unz64_s::pfile_in_zip_read, s, unz64_s::size_central_dir, unz_global_info64_s::size_comment, unz64local_getLong(), unz64local_getLong64(), unz64local_getShort(), unz64local_SearchCentralDir(), unz64local_SearchCentralDir64(), UNZ_BADZIPFILE, unz_copyright, UNZ_ERRNO, UNZ_OK, unzGoToFirstFile(), unz64_s::z_filefunc, ZCLOSE64, zlib_filefunc64_32_def_s::zfile_func64, ZLIB_FILEFUNC_MODE_EXISTING, ZLIB_FILEFUNC_MODE_READ, ZLIB_FILEFUNC_SEEK_SET, ZOPEN64, zlib_filefunc64_32_def_s::zseek32_file, ZSEEK64, and zlib_filefunc64_32_def_s::ztell32_file.

Referenced by unzOpen(), unzOpen2(), unzOpen2_64(), and unzOpen64().

unzReadCurrentFile()

int ZEXPORT unzReadCurrentFile	(	unzFile	file,
		voidp	buf,
		unsigned	len
	)

Addition for GDAL : END

Definition at line 1684 of file unzip.c.

{
    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 : (int)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;
            /* Detect overflow, because z_stream.total_out is uLong (32 bits) */
            if (uTotalOutAfter<uTotalOutBefore)
                uTotalOutAfter += 1LL << 32; /* Add maximum value of uLong + 1 */
            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 : (int)iRead;
            if (err!=Z_OK)
                break;
        }
    }
 
    if (err==Z_OK)
        return (int)iRead;
    return err;
}

References z_stream_s::avail_in, z_stream_s::avail_out, file_in_zip64_read_info_s::byte_before_the_zipfile, file_in_zip64_read_info_s::compression_method, file_in_zip64_read_info_s::crc32, crc32(), err, file_in_zip64_read_info_s::filestream, i, if(), inflate(), int, len, z_stream_s::msg, z_stream_s::next_in, z_stream_s::next_out, NULL, file_in_zip64_read_info_s::pos_in_zipfile, file_in_zip64_read_info_s::raw, file_in_zip64_read_info_s::read_buffer, file_in_zip64_read_info_s::rest_read_compressed, file_in_zip64_read_info_s::rest_read_uncompressed, s, file_in_zip64_read_info_s::stream, z_stream_s::total_in, z_stream_s::total_out, file_in_zip64_read_info_s::total_out_64, UNZ_BUFSIZE, UNZ_END_OF_LIST_OF_FILE, UNZ_EOF, UNZ_ERRNO, UNZ_OK, UNZ_PARAMERROR, while(), Z_BZIP2ED, Z_DATA_ERROR, file_in_zip64_read_info_s::z_filefunc, Z_OK, Z_STREAM_END, Z_SYNC_FLUSH, zdecode, ZLIB_FILEFUNC_SEEK_SET, ZREAD64, and ZSEEK64.

Referenced by do_extract_currentfile().

unzSetOffset()

int ZEXPORT unzSetOffset	(	unzFile	file,
		uLong	pos
	)

Definition at line 2125 of file unzip.c.

{
    return unzSetOffset64(file,pos);
}

References pos, and unzSetOffset64().

unzSetOffset64()

int ZEXPORT unzSetOffset64	(	unzFile	file,
		ZPOS64_T	pos
	)

Definition at line 2107 of file unzip.c.

{
    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;
}

References err, NULL, pos, s, unz64local_GetCurrentFileInfoInternal(), UNZ_OK, and UNZ_PARAMERROR.

Referenced by unzSetOffset().

unzStringFileNameCompare()

int ZEXPORT unzStringFileNameCompare	(	const char *	fileName1,
		const char *	fileName2,
		int	iCaseSensitivity
	)

Definition at line 390 of file unzip.c.

{
    if (iCaseSensitivity==0)
        iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE;
 
    if (iCaseSensitivity==1)
        return strcmp(fileName1,fileName2);
 
    return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2);
}

References CASESENSITIVITYDEFAULTVALUE, and STRCMPCASENOSENTIVEFUNCTION.

Referenced by unzLocateFile().

unztell()

z_off_t ZEXPORT unztell

(

unzFile

file

)

Definition at line 1892 of file unzip.c.

{
    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;
}

References NULL, s, file_in_zip64_read_info_s::stream, z_stream_s::total_out, UNZ_PARAMERROR, and z_off_t.

unztell64()

ZPOS64_T ZEXPORT unztell64

(

unzFile

file

)

Definition at line 1907 of file unzip.c.

{
 
    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;
}

References NULL, s, and file_in_zip64_read_info_s::total_out_64.

Variable Documentation

unz_copyright

const char unz_copyright[]

Initial value:

=
   " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"

Definition at line 122 of file unzip.c.

Referenced by unzOpenInternal().