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* Copied unzip sources into a more approriate place. (used svn-copy to keep svn history) (*sigh* why does svn sometimes has to be such a pain in the ass?)

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eraserxl 2010-09-24 11:53:26 +00:00
parent 772859ecbc
commit 3d9eb45e8c
11 changed files with 2833 additions and 0 deletions
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132
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/* crypt.h -- base code for crypt/uncrypt ZIPfile
Version 1.01e, February 12th, 2005
Copyright (C) 1998-2005 Gilles Vollant
This code is a modified version of crypting code in Infozip distribution
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).
If you don't need crypting in your application, just define symbols
NOCRYPT and NOUNCRYPT.
This code support the "Traditional PKWARE Encryption".
The new AES encryption added on Zip format by Winzip (see the page
http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong
Encryption is not supported.
*/
#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
/***********************************************************************
* Return the next byte in the pseudo-random sequence
*/
static int decrypt_byte(unsigned long* pkeys, const unsigned long* pcrc_32_tab)
{
unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an
* unpredictable manner on 16-bit systems; not a problem
* with any known compiler so far, though */
temp = ((unsigned) (*(pkeys + 2)) & 0xffff) | 2;
return (int) (((temp * (temp ^ 1)) >> 8) & 0xff);
}
/***********************************************************************
* Update the encryption keys with the next byte of plain text
*/
static int update_keys(unsigned long* pkeys, const unsigned long* pcrc_32_tab, int c)
{
(*(pkeys + 0)) = CRC32( ( *( pkeys + 0 ) ), c );
(*(pkeys + 1)) += (*(pkeys + 0)) & 0xff;
(*(pkeys + 1)) = (*(pkeys + 1)) * 134775813L + 1;
{
register int keyshift = (int) ((*(pkeys + 1)) >> 24);
(*(pkeys + 2)) = CRC32( ( *( pkeys + 2 ) ), keyshift );
}
return c;
}
/***********************************************************************
* Initialize the encryption keys and the random header according to
* the given password.
*/
static void init_keys(const char* passwd, unsigned long* pkeys, const unsigned long* pcrc_32_tab)
{
*(pkeys + 0) = 305419896L;
*(pkeys + 1) = 591751049L;
*(pkeys + 2) = 878082192L;
while (*passwd != '\0')
{
update_keys(pkeys, pcrc_32_tab, (int) *passwd);
passwd++;
}
}
#define zdecode(pkeys,pcrc_32_tab,c) \
(update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))
#define zencode(pkeys,pcrc_32_tab,c,t) \
(t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c))
#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED
#define RAND_HEAD_LEN 12
/* "last resort" source for second part of crypt seed pattern */
# ifndef ZCR_SEED2
# define ZCR_SEED2 3141592654UL /* use PI as default pattern */
# endif
static int crypthead( passwd, buf, bufSize, pkeys, pcrc_32_tab, crcForCrypting )
const char *passwd; /* password string */
unsigned char *buf; /* where to write header */
int bufSize;
unsigned long* pkeys;
const unsigned long* pcrc_32_tab;
unsigned long crcForCrypting;
{
int n; /* index in random header */
int t; /* temporary */
int c; /* random byte */
unsigned char header[RAND_HEAD_LEN-2]; /* random header */
static unsigned calls = 0; /* ensure different random header each time */
if ( bufSize < RAND_HEAD_LEN )
return 0;
/* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
* output of rand() to get less predictability, since rand() is
* often poorly implemented.
*/
if ( ++calls == 1 )
{
srand( ( unsigned )( time( NULL ) ^ ZCR_SEED2 ) );
}
init_keys( passwd, pkeys, pcrc_32_tab );
for ( n = 0; n < RAND_HEAD_LEN - 2; n++ )
{
c = ( rand() >> 7 ) & 0xff;
header[n] = ( unsigned char )zencode( pkeys, pcrc_32_tab, c, t );
}
/* Encrypt random header (last two bytes is high word of crc) */
init_keys( passwd, pkeys, pcrc_32_tab );
for ( n = 0; n < RAND_HEAD_LEN - 2; n++ )
{
buf[n] = ( unsigned char )zencode( pkeys, pcrc_32_tab, header[n], t );
}
buf[n++] = zencode( pkeys, pcrc_32_tab, ( int )( crcForCrypting >> 16 ) & 0xff, t );
buf[n++] = zencode( pkeys, pcrc_32_tab, ( int )( crcForCrypting >> 24 ) & 0xff, t );
return n;
}
#endif

64
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#include "inflate.h"
#define CHUNK 1024
int inflateFile(FILE *source, FILE *dest)
{
int ret;
unsigned have;
z_stream strm;
unsigned char in[CHUNK];
unsigned char out[CHUNK];
/* allocate inflate state */
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
strm.avail_in = 0;
strm.next_in = Z_NULL;
ret = inflateInit( &strm );
if (ret != Z_OK) return ret;
/* decompress until deflate stream ends or end of file */
do
{
strm.avail_in = fread(in, 1, CHUNK, source);
if (ferror( source ))
{
(void) inflateEnd(&strm);
return Z_ERRNO;
}
if (strm.avail_in == 0) break;
strm.next_in = in;
/* run inflate() on input until output buffer not full */
do
{
strm.avail_out = CHUNK;
strm.next_out = out;
ret = inflate(&strm, Z_NO_FLUSH);
switch (ret)
{
case Z_NEED_DICT:
(void) inflateEnd(&strm);
return -20;
case Z_DATA_ERROR:
(void) inflateEnd(&strm);
return -21;
case Z_MEM_ERROR:
(void) inflateEnd(&strm);
return -22;
}
have = CHUNK - strm.avail_out;
if (fwrite(out, 1, have, dest) != have || ferror( dest ))
{
(void) inflateEnd(&strm);
return Z_ERRNO;
}
} while (strm.avail_out == 0);
/* done when inflate() says it's done */
} while (ret != Z_STREAM_END);
/* clean up and return */
(void) inflateEnd(&strm);
return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
}

18
source/utils/unzip/inflate.h Normal file
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#ifndef _INFLATE_H
#define _INFLATE_H
#include <stdio.h>
#include <zlib.h>
#ifdef __cplusplus
extern "C"
{
#endif
int inflateFile(FILE *source, FILE *dest);
#ifdef __cplusplus
}
#endif
#endif //_INFLATE_H

176
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/* ioapi.c -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
Version 1.01e, February 12th, 2005
Copyright (C) 1998-2005 Gilles Vollant
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "ioapi.h"
/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif
#ifndef SEEK_END
#define SEEK_END 2
#endif
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
voidpf ZCALLBACK fopen_file_func OF( (
voidpf opaque,
const char* filename,
int mode ) );
uLong ZCALLBACK fread_file_func OF( (
voidpf opaque,
voidpf stream,
void* buf,
uLong size ) );
uLong ZCALLBACK fwrite_file_func OF( (
voidpf opaque,
voidpf stream,
const void* buf,
uLong size ) );
long ZCALLBACK ftell_file_func OF( (
voidpf opaque,
voidpf stream ) );
long ZCALLBACK fseek_file_func OF( (
voidpf opaque,
voidpf stream,
uLong offset,
int origin ) );
int ZCALLBACK fclose_file_func OF( (
voidpf opaque,
voidpf stream ) );
int ZCALLBACK ferror_file_func OF( (
voidpf opaque,
voidpf stream ) );
voidpf ZCALLBACK fopen_file_func ( opaque, filename, mode )
voidpf opaque;
const char* filename;
int mode;
{
FILE* file = NULL;
const char* mode_fopen = NULL;
if ( ( mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER ) == ZLIB_FILEFUNC_MODE_READ )
mode_fopen = "rb";
else if ( mode & ZLIB_FILEFUNC_MODE_EXISTING )
mode_fopen = "r+b";
else if ( mode & ZLIB_FILEFUNC_MODE_CREATE )
mode_fopen = "wb";
if ( ( filename != NULL ) && ( mode_fopen != NULL ) )
file = fopen( filename, mode_fopen );
return file;
}
uLong ZCALLBACK fread_file_func ( opaque, stream, buf, size )
voidpf opaque;
voidpf stream;
void* buf;
uLong size;
{
uLong ret;
ret = ( uLong )fread( buf, 1, ( size_t )size, ( FILE * )stream );
return ret;
}
uLong ZCALLBACK fwrite_file_func ( opaque, stream, buf, size )
voidpf opaque;
voidpf stream;
const void* buf;
uLong size;
{
uLong ret;
ret = ( uLong )fwrite( buf, 1, ( size_t )size, ( FILE * )stream );
return ret;
}
long ZCALLBACK ftell_file_func ( opaque, stream )
voidpf opaque;
voidpf stream;
{
long ret;
ret = ftell( ( FILE * )stream );
return ret;
}
long ZCALLBACK fseek_file_func ( opaque, stream, offset, origin )
voidpf opaque;
voidpf stream;
uLong offset;
int origin;
{
int fseek_origin = 0;
long ret;
switch ( origin )
{
case ZLIB_FILEFUNC_SEEK_CUR :
fseek_origin = SEEK_CUR;
break;
case ZLIB_FILEFUNC_SEEK_END :
fseek_origin = SEEK_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
fseek_origin = SEEK_SET;
break;
default:
return -1;
}
ret = 0;
fseek( ( FILE * )stream, offset, fseek_origin );
return ret;
}
int ZCALLBACK fclose_file_func ( opaque, stream )
voidpf opaque;
voidpf stream;
{
int ret;
ret = fclose( ( FILE * )stream );
return ret;
}
int ZCALLBACK ferror_file_func ( opaque, stream )
voidpf opaque;
voidpf stream;
{
int ret;
ret = ferror( ( FILE * )stream );
return ret;
}
void fill_fopen_filefunc ( pzlib_filefunc_def )
zlib_filefunc_def* pzlib_filefunc_def;
{
pzlib_filefunc_def->zopen_file = fopen_file_func;
pzlib_filefunc_def->zread_file = fread_file_func;
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
pzlib_filefunc_def->ztell_file = ftell_file_func;
pzlib_filefunc_def->zseek_file = fseek_file_func;
pzlib_filefunc_def->zclose_file = fclose_file_func;
pzlib_filefunc_def->zerror_file = ferror_file_func;
pzlib_filefunc_def->opaque = NULL;
}

71
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/* ioapi.h -- IO base function header for compress/uncompress .zip
files using zlib + zip or unzip API
Version 1.01e, February 12th, 2005
Copyright (C) 1998-2005 Gilles Vollant
*/
#ifndef _ZLIBIOAPI_H
#define _ZLIBIOAPI_H
#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)
#define ZLIB_FILEFUNC_SEEK_SET (0)
#define ZLIB_FILEFUNC_MODE_READ (1)
#define ZLIB_FILEFUNC_MODE_WRITE (2)
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
#define ZLIB_FILEFUNC_MODE_EXISTING (4)
#define ZLIB_FILEFUNC_MODE_CREATE (8)
#ifndef ZCALLBACK
#if (defined(WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
#define ZCALLBACK CALLBACK
#else
#define ZCALLBACK
#endif
#endif
#ifdef __cplusplus
extern "C"
{
#endif
typedef voidpf ( ZCALLBACK *open_file_func ) OF( ( voidpf opaque, const char* filename, int mode ) );
typedef uLong ( ZCALLBACK *read_file_func ) OF( ( voidpf opaque, voidpf stream, void* buf, uLong size ) );
typedef uLong ( ZCALLBACK *write_file_func ) OF( ( voidpf opaque, voidpf stream, const void* buf, uLong size ) );
typedef long ( ZCALLBACK *tell_file_func ) OF( ( voidpf opaque, voidpf stream ) );
typedef long ( ZCALLBACK *seek_file_func ) OF( ( voidpf opaque, voidpf stream, uLong offset, int origin ) );
typedef int ( ZCALLBACK *close_file_func ) OF( ( voidpf opaque, voidpf stream ) );
typedef int ( ZCALLBACK *testerror_file_func ) OF( ( voidpf opaque, voidpf stream ) );
typedef struct zlib_filefunc_def_s
{
open_file_func zopen_file;
read_file_func zread_file;
write_file_func zwrite_file;
tell_file_func ztell_file;
seek_file_func zseek_file;
close_file_func zclose_file;
testerror_file_func zerror_file;
voidpf opaque;
} zlib_filefunc_def;
void fill_fopen_filefunc OF( ( zlib_filefunc_def* pzlib_filefunc_def ) );
#define ZREAD(filefunc,filestream,buf,size) ((*((filefunc).zread_file))((filefunc).opaque,filestream,buf,size))
#define ZWRITE(filefunc,filestream,buf,size) ((*((filefunc).zwrite_file))((filefunc).opaque,filestream,buf,size))
#define ZTELL(filefunc,filestream) ((*((filefunc).ztell_file))((filefunc).opaque,filestream))
#define ZSEEK(filefunc,filestream,pos,mode) ((*((filefunc).zseek_file))((filefunc).opaque,filestream,pos,mode))
#define ZCLOSE(filefunc,filestream) ((*((filefunc).zclose_file))((filefunc).opaque,filestream))
#define ZERROR(filefunc,filestream) ((*((filefunc).zerror_file))((filefunc).opaque,filestream))
#ifdef __cplusplus
}
#endif
#endif

299
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/*
miniunz.c
Version 1.01e, February 12th, 2005
Copyright (C) 1998-2005 Gilles Vollant
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <fcntl.h>
# include <unistd.h>
# include <utime.h>
#include "unzip.h"
#define CASESENSITIVITY (0)
#define WRITEBUFFERSIZE (8192)
#define MAXFILENAME (256)
static int mymkdir(const char* dirname)
{
int ret = 0;
ret = mkdir(dirname, 0775);
return ret;
}
int makedir(char *newdir)
{
char *buffer;
char *p;
int len = (int) strlen(newdir);
if (len <= 0) return 0;
buffer = (char*) malloc(len + 1);
strcpy(buffer, newdir);
if (buffer[len - 1] == '/')
{
buffer[len - 1] = '\0';
}
if (mymkdir(buffer) == 0)
{
free(buffer);
return 1;
}
p = buffer + 1;
while (1)
{
char hold;
while (*p && *p != '\\' && *p != '/')
p++;
hold = *p;
*p = 0;
if ((mymkdir(buffer) == -1) && (errno == ENOENT))
{
// printf("couldn't create directory %s\n",buffer);
free(buffer);
return 0;
}
if (hold == 0) break;
*p++ = hold;
}
free(buffer);
return 1;
}
static char *fullfilename(const char *basedir, char *filename)
{
char *file = (char *) malloc(strlen(basedir) + strlen(filename) + 1);
if (basedir == NULL)
{
strcpy(file, filename);
}
else
{
if (basedir[strlen(basedir) - 1] == '/')
{
sprintf(file, "%s%s", basedir, filename);
}
else
{
sprintf(file, "%s/%s", basedir, filename);
}
}
return file;
}
static int do_extract_currentfile(unzFile uf, const int* popt_extract_without_path, int* popt_overwrite,
const char* password, const char *basedir)
{
char filename_inzip[256];
char* filename_withoutpath;
char* filename_withpath;
char* p;
int err = UNZ_OK;
FILE *fout = NULL;
void* buf;
uInt size_buf;
unz_file_info file_info;
err = unzGetCurrentFileInfo(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
if (err != UNZ_OK)
{
// printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
return err;
}
size_buf = WRITEBUFFERSIZE;
buf = (void*) malloc(size_buf);
if (buf == NULL)
{
// printf("Error allocating memory\n");
return UNZ_INTERNALERROR;
}
p = filename_withoutpath = filename_inzip;
filename_withpath = fullfilename(basedir, filename_inzip);
while ((*p) != '\0')
{
if (((*p) == '/') || ((*p) == '\\')) filename_withoutpath = p + 1;
p++;
}
if ((*filename_withoutpath) == '\0')
{
if ((*popt_extract_without_path) == 0)
{
// Fix the path, this will fail if the directoryname is the same as the first filename in the zip
char *path = (char *) malloc(strlen(filename_withpath));
strcpy(path, filename_withpath);
char *ptr = strstr(path, filename_withoutpath);
*ptr = '\0';
// printf("creating directory: %s\n",path);
mymkdir(path);
free(path);
}
}
else
{
char* write_filename;
int skip = 0;
if ((*popt_extract_without_path) == 0)
write_filename = filename_withpath;
else write_filename = filename_withoutpath;
err = unzOpenCurrentFilePassword(uf, password);
if (err != UNZ_OK)
{
// printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
}
if (((*popt_overwrite) == 0) && (err == UNZ_OK))
{
char rep = 0;
FILE* ftestexist;
ftestexist = fopen(write_filename, "rb");
if (ftestexist != NULL)
{
fclose(ftestexist);
do
{
char answer[128];
int ret;
// printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
ret = scanf("%1s", answer);
if (ret != 1)
{
exit(EXIT_FAILURE);
}
rep = answer[0];
if ((rep >= 'a') && (rep <= 'z')) rep -= 0x20;
} while ((rep != 'Y') && (rep != 'N') && (rep != 'A'));
}
if (rep == 'N') skip = 1;
if (rep == 'A') *popt_overwrite = 1;
}
if ((skip == 0) && (err == UNZ_OK))
{
fout = fopen(write_filename, "wb");
/* some zipfile don't contain directory alone before file */
if ((fout == NULL) && ((*popt_extract_without_path) == 0) && (filename_withoutpath
!= (char*) filename_inzip))
{
char c = *(filename_withoutpath - 1);
*(filename_withoutpath - 1) = '\0';
// Fix the path, this will fail if the directoryname is the same as the first filename in the zip
char *path = (char *) malloc(strlen(write_filename));
strcpy(path, write_filename);
char *ptr = strstr(path, filename_withoutpath);
*ptr = '\0';
makedir(path);
free(path);
*(filename_withoutpath - 1) = c;
fout = fopen(write_filename, "wb");
}
if (fout == NULL)
{
// printf("error opening %s\n",write_filename);
}
}
if (fout != NULL)
{
// printf(" extracting: %s\n",write_filename);
do
{
err = unzReadCurrentFile(uf, buf, size_buf);
if (err < 0)
{
// printf("error %d with zipfile in unzReadCurrentFile\n",err);
break;
}
if (err > 0) if (fwrite(buf, err, 1, fout) != 1)
{
// printf("error in writing extracted file\n");
err = UNZ_ERRNO;
break;
}
} while (err > 0);
if (fout) fclose(fout);
}
if (err == UNZ_OK)
{
err = unzCloseCurrentFile(uf);
if (err != UNZ_OK)
{
// printf("error %d with zipfile in unzCloseCurrentFile\n",err);
}
}
else unzCloseCurrentFile(uf); /* don't lose the error */
}
free(filename_withpath);
free(buf);
return err;
}
int extractZip(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char* password, const char *basedir)
{
uLong i;
unz_global_info gi;
int err;
err = unzGetGlobalInfo(uf, &gi);
if (err != UNZ_OK)
// printf("error %d with zipfile in unzGetGlobalInfo \n",err);
for (i = 0; i < gi.number_entry; i++)
{
if (do_extract_currentfile(uf, &opt_extract_without_path, &opt_overwrite, password, basedir) != UNZ_OK) break;
if ((i + 1) < gi.number_entry)
{
err = unzGoToNextFile(uf);
if (err != UNZ_OK)
{
// printf("error %d with zipfile in unzGoToNextFile\n",err);
break;
}
}
}
return 0;
}
int extractZipOnefile(unzFile uf, const char* filename, int opt_extract_without_path, int opt_overwrite,
const char* password)
{
if (unzLocateFile(uf, filename, CASESENSITIVITY) != UNZ_OK)
{
// printf("file %s not found in the zipfile\n",filename);
return 2;
}
if (do_extract_currentfile(uf, &opt_extract_without_path, &opt_overwrite, password, NULL) == UNZ_OK)
return 0;
else return 1;
}

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#ifndef _miniunz_H
#define _miniunz_H
#ifdef __cplusplus
extern "C"
{
#endif
int extractZip(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char* password,
const char *basedir);
int extractZipOnefile(unzFile uf, const char* filename, int opt_extract_without_path, int opt_overwrite,
const char* password);
int makedir(char *newdir);
#ifdef __cplusplus
}
#endif
#endif

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/*
Additional tools for Minizip
Code: Xavier Roche '2004
License: Same as ZLIB (www.gzip.org)
*/
/* Code */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "unzip.h"
#define READ_8(adr) ((unsigned char)*(adr))
#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )
#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) )
#define WRITE_8(buff, n) do { \
*((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \
} while(0)
#define WRITE_16(buff, n) do { \
WRITE_8((unsigned char*)(buff), n); \
WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \
} while(0)
#define WRITE_32(buff, n) do { \
WRITE_16((unsigned char*)(buff), (n) & 0xffff); \
WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \
} while(0)
extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered)
const char* file;const char* fileOut;const char* fileOutTmp;uLong* nRecovered;uLong* bytesRecovered;
{
int err = Z_OK;
FILE* fpZip = fopen(file, "rb");
FILE* fpOut = fopen(fileOut, "wb");
FILE* fpOutCD = fopen(fileOutTmp, "wb");
if (fpZip != NULL && fpOut != NULL)
{
int entries = 0;
uLong totalBytes = 0;
char header[30];
char filename[256];
char extra[1024];
int offset = 0;
int offsetCD = 0;
while (fread(header, 1, 30, fpZip) == 30)
{
int currentOffset = offset;
/* File entry */
if (READ_32( header ) == 0x04034b50)
{
unsigned int version = READ_16( header + 4 );
unsigned int gpflag = READ_16( header + 6 );
unsigned int method = READ_16( header + 8 );
unsigned int filetime = READ_16( header + 10 );
unsigned int filedate = READ_16( header + 12 );
unsigned int crc = READ_32( header + 14 ); /* crc */
unsigned int cpsize = READ_32( header + 18 ); /* compressed size */
unsigned int uncpsize = READ_32( header + 22 ); /* uncompressed sz */
unsigned int fnsize = READ_16( header + 26 ); /* file name length */
unsigned int extsize = READ_16( header + 28 ); /* extra field length */
filename[0] = extra[0] = '\0';
/* Header */
if (fwrite(header, 1, 30, fpOut) == 30)
{
offset += 30;
}
else
{
err = Z_ERRNO;
break;
}
/* Filename */
if (fnsize > 0)
{
if (fread(filename, 1, fnsize, fpZip) == fnsize)
{
if (fwrite(filename, 1, fnsize, fpOut) == fnsize)
{
offset += fnsize;
}
else
{
err = Z_ERRNO;
break;
}
}
else
{
err = Z_ERRNO;
break;
}
}
else
{
err = Z_STREAM_ERROR;
break;
}
/* Extra field */
if (extsize > 0)
{
if (fread(extra, 1, extsize, fpZip) == extsize)
{
if (fwrite(extra, 1, extsize, fpOut) == extsize)
{
offset += extsize;
}
else
{
err = Z_ERRNO;
break;
}
}
else
{
err = Z_ERRNO;
break;
}
}
/* Data */
{
int dataSize = cpsize;
if (dataSize == 0)
{
dataSize = uncpsize;
}
if (dataSize > 0)
{
char* data = malloc(dataSize);
if (data != NULL)
{
if ((int) fread(data, 1, dataSize, fpZip) == dataSize)
{
if ((int) fwrite(data, 1, dataSize, fpOut) == dataSize)
{
offset += dataSize;
totalBytes += dataSize;
}
else
{
err = Z_ERRNO;
}
}
else
{
err = Z_ERRNO;
}
free(data);
if (err != Z_OK)
{
break;
}
}
else
{
err = Z_MEM_ERROR;
break;
}
}
}
/* Central directory entry */
{
char header[46];
char* comment = "";
int comsize = (int) strlen(comment);
WRITE_32( header, 0x02014b50 );
WRITE_16( header + 4, version );
WRITE_16( header + 6, version );
WRITE_16( header + 8, gpflag );
WRITE_16( header + 10, method );
WRITE_16( header + 12, filetime );
WRITE_16( header + 14, filedate );
WRITE_32( header + 16, crc );
WRITE_32( header + 20, cpsize );
WRITE_32( header + 24, uncpsize );
WRITE_16( header + 28, fnsize );
WRITE_16( header + 30, extsize );
WRITE_16( header + 32, comsize );
WRITE_16( header + 34, 0 ); /* disk # */
WRITE_16( header + 36, 0 ); /* int attrb */
WRITE_32( header + 38, 0 ); /* ext attrb */
WRITE_32( header + 42, currentOffset );
/* Header */
if (fwrite(header, 1, 46, fpOutCD) == 46)
{
offsetCD += 46;
/* Filename */
if (fnsize > 0)
{
if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize)
{
offsetCD += fnsize;
}
else
{
err = Z_ERRNO;
break;
}
}
else
{
err = Z_STREAM_ERROR;
break;
}
/* Extra field */
if (extsize > 0)
{
if (fwrite(extra, 1, extsize, fpOutCD) == extsize)
{
offsetCD += extsize;
}
else
{
err = Z_ERRNO;
break;
}
}
/* Comment field */
if (comsize > 0)
{
if ((int) fwrite(comment, 1, comsize, fpOutCD) == comsize)
{
offsetCD += comsize;
}
else
{
err = Z_ERRNO;
break;
}
}
}
else
{
err = Z_ERRNO;
break;
}
}
/* Success */
entries++;
}
else
{
break;
}
}
/* Final central directory */
{
int entriesZip = entries;
char header[22];
char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools";
int comsize = (int) strlen(comment);
if (entriesZip > 0xffff)
{
entriesZip = 0xffff;
}
WRITE_32( header, 0x06054b50 );
WRITE_16( header + 4, 0 ); /* disk # */
WRITE_16( header + 6, 0 ); /* disk # */
WRITE_16( header + 8, entriesZip ); /* hack */
WRITE_16( header + 10, entriesZip ); /* hack */
WRITE_32( header + 12, offsetCD ); /* size of CD */
WRITE_32( header + 16, offset ); /* offset to CD */
WRITE_16( header + 20, comsize ); /* comment */
/* Header */
if (fwrite(header, 1, 22, fpOutCD) == 22)
{
/* Comment field */
if (comsize > 0)
{
if ((int) fwrite(comment, 1, comsize, fpOutCD) != comsize)
{
err = Z_ERRNO;
}
}
}
else
{
err = Z_ERRNO;
}
}
/* Final merge (file + central directory) */
fclose(fpOutCD);
if (err == Z_OK)
{
fpOutCD = fopen(fileOutTmp, "rb");
if (fpOutCD != NULL)
{
int nRead;
char buffer[8192];
while ((nRead = (int) fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0)
{
if ((int) fwrite(buffer, 1, nRead, fpOut) != nRead)
{
err = Z_ERRNO;
break;
}
}
fclose(fpOutCD);
}
}
/* Close */
fclose(fpZip);
fclose(fpOut);
/* Wipe temporary file */
(void) remove(fileOutTmp);
/* Number of recovered entries */
if (err == Z_OK)
{
if (nRecovered != NULL)
{
*nRecovered = entries;
}
if (bytesRecovered != NULL)
{
*bytesRecovered = totalBytes;
}
}
}
else
{
err = Z_STREAM_ERROR;
}
return err;
}

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/*
Additional tools for Minizip
Code: Xavier Roche '2004
License: Same as ZLIB (www.gzip.org)
*/
#ifndef _zip_tools_H
#define _zip_tools_H
#ifdef __cplusplus
extern "C"
{
#endif
#ifndef _ZLIB_H
#include "zlib.h"
#endif
#include "unzip.h"
/* Repair a ZIP file (missing central directory)
file: file to recover
fileOut: output file after recovery
fileOutTmp: temporary file name used for recovery
*/
extern int ZEXPORT unzRepair(const char* file, const char* fileOut, const char* fileOutTmp, uLong* nRecovered,
uLong* bytesRecovered);
#endif

1332
source/utils/unzip/unzip.c Normal file
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349
source/utils/unzip/unzip.h Normal file
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/* unzip.h -- IO for uncompress .zip files using zlib
Version 1.01e, February 12th, 2005
Copyright (C) 1998-2005 Gilles Vollant
This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g
WinZip, InfoZip tools and compatible.
Multi volume ZipFile (span) are not supported.
Encryption compatible with pkzip 2.04g only supported
Old compressions used by old PKZip 1.x are not supported
I WAIT FEEDBACK at mail info@winimage.com
Visit also http://www.winimage.com/zLibDll/unzip.htm for evolution
Condition of use and distribution are the same than zlib :
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* for more info about .ZIP format, see
http://www.info-zip.org/pub/infozip/doc/appnote-981119-iz.zip
http://www.info-zip.org/pub/infozip/doc/
PkWare has also a specification at :
ftp://ftp.pkware.com/probdesc.zip
*/
#ifndef _unz_H
#define _unz_H
#ifdef __cplusplus
extern "C"
{
#endif
#ifndef _ZLIB_H
#include "zlib.h"
#endif
#ifndef _ZLIBIOAPI_H
#include "ioapi.h"
#endif
#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
/* like the STRICT of WIN32, we define a pointer that cannot be converted
from (void*) without cast */
typedef struct TagunzFile__
{
int unused;
}unzFile__;
typedef unzFile__ *unzFile;
#else
typedef voidp unzFile;
#endif
#define UNZ_OK (0)
#define UNZ_END_OF_LIST_OF_FILE (-100)
#define UNZ_ERRNO (Z_ERRNO)
#define UNZ_EOF (0)
#define UNZ_PARAMERROR (-102)
#define UNZ_BADZIPFILE (-103)
#define UNZ_INTERNALERROR (-104)
#define UNZ_CRCERROR (-105)
/* tm_unz contain date/time info */
typedef struct tm_unz_s
{
uInt tm_sec; /* seconds after the minute - [0,59] */
uInt tm_min; /* minutes after the hour - [0,59] */
uInt tm_hour; /* hours since midnight - [0,23] */
uInt tm_mday; /* day of the month - [1,31] */
uInt tm_mon; /* months since January - [0,11] */
uInt tm_year; /* years - [1980..2044] */
} tm_unz;
/* unz_global_info structure contain global data about the ZIPfile
These data comes from the end of central dir */
typedef struct unz_global_info_s
{
uLong number_entry; /* total number of entries in
the central dir on this disk */
uLong size_comment; /* size of the global comment of the zipfile */
} unz_global_info;
/* unz_file_info contain information about a file in the zipfile */
typedef struct unz_file_info_s
{
uLong version; /* version made by 2 bytes */
uLong version_needed; /* version needed to extract 2 bytes */
uLong flag; /* general purpose bit flag 2 bytes */
uLong compression_method; /* compression method 2 bytes */
uLong dosDate; /* last mod file date in Dos fmt 4 bytes */
uLong crc; /* crc-32 4 bytes */
uLong compressed_size; /* compressed size 4 bytes */
uLong uncompressed_size; /* uncompressed size 4 bytes */
uLong size_filename; /* filename length 2 bytes */
uLong size_file_extra; /* extra field length 2 bytes */
uLong size_file_comment; /* file comment length 2 bytes */
uLong disk_num_start; /* disk number start 2 bytes */
uLong internal_fa; /* internal file attributes 2 bytes */
uLong external_fa; /* external file attributes 4 bytes */
tm_unz tmu_date;
} unz_file_info;
extern int ZEXPORT unzStringFileNameCompare OF ( ( const char* fileName1,
const char* fileName2,
int iCaseSensitivity ) );
/*
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 unzFile ZEXPORT unzOpen OF( ( const char *path ) );
/*
Open a Zip file. path contain the full pathname (by example,
on a Windows XP computer "c:\\zlib\\zlib113.zip" or on an Unix computer
"zlib/zlib113.zip".
If the zipfile cannot be opened (file don'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 OF( ( const char *path,
zlib_filefunc_def* pzlib_filefunc_def ) );
/*
Open a Zip file, like unzOpen, but provide a set of file low level API
for read/write the zip file (see ioapi.h)
*/
extern int ZEXPORT unzClose OF( ( unzFile file ) );
/*
Close a ZipFile opened with unzipOpen.
If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
return UNZ_OK if there is no problem. */
extern int ZEXPORT unzGetGlobalInfo OF( ( unzFile file,
unz_global_info *pglobal_info ) );
/*
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 unzGetGlobalComment OF( ( unzFile file,
char *szComment,
uLong uSizeBuf ) );
/*
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
*/
/***************************************************************************/
/* Unzip package allow you browse the directory of the zipfile */
extern int ZEXPORT unzGoToFirstFile OF( ( unzFile file ) );
/*
Set the current file of the zipfile to the first file.
return UNZ_OK if there is no problem
*/
extern int ZEXPORT unzGoToNextFile OF( ( unzFile file ) );
/*
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 unzLocateFile OF( ( unzFile file,
const char *szFileName,
int iCaseSensitivity ) );
/*
Try locate the file szFileName in the zipfile.
For the iCaseSensitivity signification, see unzStringFileNameCompare
return value :
UNZ_OK if the file is found. It becomes the current file.
UNZ_END_OF_LIST_OF_FILE if the file is not found
*/
/* ****************************************** */
/* Ryan supplied functions */
/* unz_file_info contain information about a file in the zipfile */
typedef struct unz_file_pos_s
{
uLong pos_in_zip_directory; /* offset in zip file directory */
uLong num_of_file; /* # of file */
}unz_file_pos;
extern int ZEXPORT unzGetFilePos(
unzFile file,
unz_file_pos* file_pos );
extern int ZEXPORT unzGoToFilePos(
unzFile file,
unz_file_pos* file_pos );
/* ****************************************** */
extern int ZEXPORT unzGetCurrentFileInfo OF( ( unzFile file,
unz_file_info *pfile_info,
char *szFileName,
uLong fileNameBufferSize,
void *extraField,
uLong extraFieldBufferSize,
char *szComment,
uLong commentBufferSize ) );
/*
Get Info about the current file
if pfile_info!=NULL, the *pfile_info structure will contain somes info about
the current file
if szFileName!=NULL, the filemane string will be copied in szFileName
(fileNameBufferSize is the size of the buffer)
if extraField!=NULL, the extra field information will be copied in extraField
(extraFieldBufferSize is the size of the buffer).
This is the Central-header version of the extra field
if szComment!=NULL, the comment string of the file will be copied in szComment
(commentBufferSize is the size of the buffer)
*/
/***************************************************************************/
/* for reading the content of the current zipfile, you can open it, read data
from it, and close it (you can close it before reading all the file)
*/
extern int ZEXPORT unzOpenCurrentFile OF( ( unzFile file ) );
/*
Open for reading data the current file in the zipfile.
If there is no error, the return value is UNZ_OK.
*/
extern int ZEXPORT unzOpenCurrentFilePassword OF( ( unzFile file,
const char* password ) );
/*
Open for reading data the current file in the zipfile.
password is a crypting password
If there is no error, the return value is UNZ_OK.
*/
extern int ZEXPORT unzOpenCurrentFile2 OF( ( unzFile file,
int* method,
int* level,
int raw ) );
/*
Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
if raw==1
*method will receive method of compression, *level will receive level of
compression
note : you can set level parameter as NULL (if you did not want known level,
but you CANNOT set method parameter as NULL
*/
extern int ZEXPORT unzOpenCurrentFile3 OF( ( unzFile file,
int* method,
int* level,
int raw,
const char* password ) );
/*
Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
if raw==1
*method will receive method of compression, *level will receive level of
compression
note : you can set level parameter as NULL (if you did not want known level,
but you CANNOT set method parameter as NULL
*/
extern int ZEXPORT unzCloseCurrentFile OF( ( unzFile file ) );
/*
Close the file in zip opened with unzOpenCurrentFile
Return UNZ_CRCERROR if all the file was read but the CRC is not good
*/
extern int ZEXPORT unzReadCurrentFile OF( ( unzFile file,
voidp buf,
unsigned len ) );
/*
Read bytes from the current file (opened by unzOpenCurrentFile)
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 z_off_t ZEXPORT unztell OF( ( unzFile file ) );
/*
Give the current position in uncompressed data
*/
extern int ZEXPORT unzeof OF( ( unzFile file ) );
/*
return 1 if the end of file was reached, 0 elsewhere
*/
extern int ZEXPORT unzGetLocalExtrafield OF( ( unzFile file,
voidp buf,
unsigned len ) );
/*
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
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
*/
/***************************************************************************/
/* Get the current file offset */
extern uLong ZEXPORT unzGetOffset ( unzFile file );
/* Set the current file offset */
extern int ZEXPORT unzSetOffset ( unzFile file, uLong pos );
#ifdef __cplusplus
}
#endif
#endif /* _unz_H */