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snes9x/unzip/zip.c

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/* zip.c -- IO on .zip files using zlib
Version 1.1, February 14h, 2010
part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
Modifications for Zip64 support
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
For more info read MiniZip_info.txt
Changes
Oct-2009 - Mathias Svensson - Remove old C style function prototypes
Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives
Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions.
Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data
It is used when recreating zip archive with RAW when deleting items from a zip.
ZIP64 data is automatically added to items that needs it, and existing ZIP64 data need to be removed.
Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required)
Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <time.h>
#include "zlib.h"
#include "zip.h"
#ifdef STDC
# include <stddef.h>
#endif
#ifdef NO_ERRNO_H
extern int errno;
#else
# include <errno.h>
#endif
#ifndef local
# define local static
#endif
/* compile with -Dlocal if your debugger can't find static symbols */
#ifndef VERSIONMADEBY
# define VERSIONMADEBY (0x0) /* platform dependent */
#endif
#ifndef Z_BUFSIZE
#define Z_BUFSIZE (64*1024) //(16384)
#endif
#ifndef Z_MAXFILENAMEINZIP
#define Z_MAXFILENAMEINZIP (256)
#endif
#ifndef ALLOC
# define ALLOC(size) (malloc(size))
#endif
/*
#define SIZECENTRALDIRITEM (0x2e)
#define SIZEZIPLOCALHEADER (0x1e)
*/
/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
// NOT sure that this work on ALL platform
#define MAKEULONG64(a, b) ((ZPOS64_T)(((unsigned long)(a)) | ((ZPOS64_T)((unsigned long)(b))) << 32))
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif
#ifndef SEEK_END
#define SEEK_END 2
#endif
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#ifndef DEF_MEM_LEVEL
#if MAX_MEM_LEVEL >= 8
# define DEF_MEM_LEVEL 8
#else
# define DEF_MEM_LEVEL MAX_MEM_LEVEL
#endif
#endif
const char zip_copyright[] =" zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
#define SIZEDATA_INDATABLOCK (4096-(4*4))
#define LOCALHEADERMAGIC (0x04034b50)
#define CENTRALHEADERMAGIC (0x02014b50)
#define ENDHEADERMAGIC (0x06054b50)
#define ZIP64ENDHEADERMAGIC (0x6064b50)
#define ZIP64ENDLOCHEADERMAGIC (0x7064b50)
#define FLAG_LOCALHEADER_OFFSET (0x06)
#define CRC_LOCALHEADER_OFFSET (0x0e)
#define SIZECENTRALHEADER (0x2e) /* 46 */
typedef struct linkedlist_datablock_internal_s
{
struct linkedlist_datablock_internal_s* next_datablock;
uLong avail_in_this_block;
uLong filled_in_this_block;
uLong unused; /* for future use and alignment */
unsigned char data[SIZEDATA_INDATABLOCK];
} linkedlist_datablock_internal;
typedef struct linkedlist_data_s
{
linkedlist_datablock_internal* first_block;
linkedlist_datablock_internal* last_block;
} linkedlist_data;
// zipAlreadyThere() set functions for a set of zero-terminated strings, and
// a block_t type for reading the central directory datablocks.
typedef char const *set_key_t;
#define set_cmp(a, b) strcmp(a, b)
#define set_drop(s, k) set_free(s, (void *)(intptr_t)(k))
#include "skipset.h"
typedef struct {
unsigned char *next; // next byte in datablock data
size_t left; // number of bytes left in data (at least)
linkedlist_datablock_internal *node; // current datablock
} block_t;
typedef struct
{
z_stream stream; /* zLib stream structure for inflate */
#ifdef HAVE_BZIP2
bz_stream bstream; /* bzLib stream structure for bziped */
#endif
int stream_initialised; /* 1 is stream is initialised */
uInt pos_in_buffered_data; /* last written byte in buffered_data */
ZPOS64_T pos_local_header; /* offset of the local header of the file
currently writing */
char* central_header; /* central header data for the current file */
uLong size_centralExtra;
uLong size_centralheader; /* size of the central header for cur file */
uLong size_centralExtraFree; /* Extra bytes allocated to the centralheader but that are not used */
uLong flag; /* flag of the file currently writing */
int method; /* compression method of file currently wr.*/
int raw; /* 1 for directly writing raw data */
Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
uLong dosDate;
uLong crc32;
int encrypt;
int zip64; /* Add ZIP64 extended information in the extra field */
ZPOS64_T pos_zip64extrainfo;
ZPOS64_T totalCompressedData;
ZPOS64_T totalUncompressedData;
#ifndef NOCRYPT
unsigned long keys[3]; /* keys defining the pseudo-random sequence */
const z_crc_t* pcrc_32_tab;
unsigned crypt_header_size;
#endif
} curfile64_info;
typedef struct
{
zlib_filefunc64_32_def z_filefunc;
voidpf filestream; /* io structure of the zipfile */
linkedlist_data central_dir;/* datablock with central dir in construction*/
int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/
curfile64_info ci; /* info on the file currently writing */
ZPOS64_T begin_pos; /* position of the beginning of the zipfile */
ZPOS64_T add_position_when_writing_offset;
ZPOS64_T number_entry;
#ifndef NO_ADDFILEINEXISTINGZIP
char *globalcomment;
#endif
// Support for zipAlreadyThere().
set_t set; // set for detecting name collisions
block_t block; // block for reading the central directory
} zip64_internal;
#ifndef NOCRYPT
#define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
#include "crypt.h"
#endif
local linkedlist_datablock_internal* allocate_new_datablock(void) {
linkedlist_datablock_internal* ldi;
ldi = (linkedlist_datablock_internal*)
ALLOC(sizeof(linkedlist_datablock_internal));
if (ldi!=NULL)
{
ldi->next_datablock = NULL ;
ldi->filled_in_this_block = 0 ;
ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
}
return ldi;
}
local void free_datablock(linkedlist_datablock_internal* ldi) {
while (ldi!=NULL)
{
linkedlist_datablock_internal* ldinext = ldi->next_datablock;
free(ldi);
ldi = ldinext;
}
}
local void init_linkedlist(linkedlist_data* ll) {
ll->first_block = ll->last_block = NULL;
}
local void free_linkedlist(linkedlist_data* ll) {
free_datablock(ll->first_block);
ll->first_block = ll->last_block = NULL;
}
local int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len) {
linkedlist_datablock_internal* ldi;
const unsigned char* from_copy;
if (ll==NULL)
return ZIP_INTERNALERROR;
if (ll->last_block == NULL)
{
ll->first_block = ll->last_block = allocate_new_datablock();
if (ll->first_block == NULL)
return ZIP_INTERNALERROR;
}
ldi = ll->last_block;
from_copy = (const unsigned char*)buf;
while (len>0)
{
uInt copy_this;
uInt i;
unsigned char* to_copy;
if (ldi->avail_in_this_block==0)
{
ldi->next_datablock = allocate_new_datablock();
if (ldi->next_datablock == NULL)
return ZIP_INTERNALERROR;
ldi = ldi->next_datablock ;
ll->last_block = ldi;
}
if (ldi->avail_in_this_block < len)
copy_this = (uInt)ldi->avail_in_this_block;
else
copy_this = (uInt)len;
to_copy = &(ldi->data[ldi->filled_in_this_block]);
for (i=0;i<copy_this;i++)
*(to_copy+i)=*(from_copy+i);
ldi->filled_in_this_block += copy_this;
ldi->avail_in_this_block -= copy_this;
from_copy += copy_this ;
len -= copy_this;
}
return ZIP_OK;
}
// zipAlreadyThere() operations. "set" in the zip internal structure keeps the
// set of names that are in the under-construction central directory so far. A
// skipset provides ~O(log n) time insertion and searching. Central directory
// records, stored in a linked list of allocated memory datablocks, is read
// through "block" in the zip internal structure.
// The block_*() functions support extracting the central directory file names
// from the datablocks. They are designed to support a growing directory by
// automatically continuing once more data has been appended to the linked
// datablocks.
// Initialize *block to the head of list. This should only be called once the
// list has at least some data in it, i.e. list->first_block is not NULL.
local void block_init(block_t *block, linkedlist_data *list) {
block->node = list->first_block;
block->next = block->node->data;
block->left = block->node->filled_in_this_block;
}
// Mark *block as bad, with all subsequent reads returning end, even if more
// data is added to the datablocks. This is invoked if the central directory is
// invalid, so there is no longer any point in attempting to interpret it.
local void block_stop(block_t *block) {
block->left = 0;
block->next = NULL;
}
// Return true if *block has reached the end of the data in the datablocks.
local int block_end(block_t *block) {
linkedlist_datablock_internal *node = block->node;
if (node == NULL)
// This block was previously terminated with extreme prejudice.
return 1;
if (block->next < node->data + node->filled_in_this_block)
// There are more bytes to read in the current datablock.
return 0;
while (node->next_datablock != NULL) {
if (node->filled_in_this_block != 0)
// There are some bytes in a later datablock.
return 0;
node = node->next_datablock;
}
// Reached the end of the list of datablocks. There's nothing.
return 1;
}
// Return one byte from *block, or -1 if the end is reached.
local int block_get(block_t *block) {
while (block->left == 0) {
if (block->node == NULL)
// We've been marked bad. Return end.
return -1;
// Update left in case more was filled in since we were last here.
block->left = block->node->filled_in_this_block -
(block->next - block->node->data);
if (block->left != 0)
// There was indeed more data appended in the current datablock.
break;
if (block->node->next_datablock == NULL)
// No more data here, and there is no next datablock. At the end.
return -1;
// Try the next datablock for more data.
block->node = block->node->next_datablock;
block->next = block->node->data;
block->left = block->node->filled_in_this_block;
}
// We have a byte to return.
block->left--;
return *block->next++;
}
// Return a 16-bit unsigned little-endian value from block, or a negative value
// if the end is reached.
local long block_get2(block_t *block) {
long got = block_get(block);
return got | ((unsigned long)block_get(block) << 8);
}
// Read up to len bytes from block into buf. Return the number of bytes read.
local size_t block_read(block_t *block, unsigned char *buf, size_t len) {
size_t need = len;
while (need) {
if (block->left == 0) {
// Get a byte to update and step through the linked list as needed.
int got = block_get(block);
if (got == -1)
// Reached the end.
break;
*buf++ = (unsigned char)got;
need--;
continue;
}
size_t take = need > block->left ? block->left : need;
memcpy(buf, block->next, take);
block->next += take;
block->left -= take;
buf += take;
need -= take;
}
return len - need; // return the number of bytes copied
}
// Skip n bytes in block. Return 0 on success or -1 if there are less than n
// bytes to the end.
local int block_skip(block_t *block, size_t n) {
while (n > block->left) {
n -= block->left;
block->next += block->left;
block->left = 0;
if (block_get(block) == -1)
return -1;
n--;
}
block->next += n;
block->left -= n;
return 0;
}
// Process the next central directory record at *block. Return the allocated,
// zero-terminated file name, or NULL for end of input or invalid data. If
// invalid, *block is marked bad. This uses *set for the allocation of memory.
local char *block_central_name(block_t *block, set_t *set) {
char *name = NULL;
for (;;) {
if (block_end(block))
// At the end of the central directory (so far).
return NULL;
// Check for a central directory record signature.
if (block_get2(block) != (CENTRALHEADERMAGIC & 0xffff) ||
block_get2(block) != (CENTRALHEADERMAGIC >> 16))
// Incorrect signature.
break;
// Go through the remaining fixed-length portion of the record,
// extracting the lengths of the three variable-length fields.
block_skip(block, 24);
unsigned flen = block_get2(block); // file name length
unsigned xlen = block_get2(block); // extra field length
unsigned clen = block_get2(block); // comment field length
if (block_skip(block, 12) == -1)
// Premature end of the record.
break;
// Extract the name and skip over the extra and comment fields.
name = set_alloc(set, NULL, flen + 1);
if (block_read(block, (unsigned char *)name, flen) < flen ||
block_skip(block, xlen + clen) == -1)
// Premature end of the record.
break;
// Check for embedded nuls in the name.
if (memchr(name, 0, flen) != NULL) {
// This name can never match the zero-terminated name provided to
// zipAlreadyThere(), so we discard it and go back to get another
// name. (Who the heck is putting nuls inside their zip file entry
// names anyway?)
set_free(set, name);
continue;
}
// All good. Return the zero-terminated file name.
name[flen] = 0;
return name;
}
// Invalid signature or premature end of the central directory record.
// Abandon trying to process the central directory.
set_free(set, name);
block_stop(block);
return NULL;
}
// Return 0 if name is not in the central directory so far, 1 if it is, -1 if
// the central directory is invalid, -2 if out of memory, or ZIP_PARAMERROR if
// file is NULL.
extern int ZEXPORT zipAlreadyThere(zipFile file, char const *name) {
zip64_internal *zip = file;
if (zip == NULL)
return ZIP_PARAMERROR;
if (zip->central_dir.first_block == NULL)
// No central directory yet, so no, name isn't there.
return 0;
if (setjmp(zip->set.env)) {
// Memory allocation failure.
set_end(&zip->set);
return -2;
}
if (!set_ok(&zip->set)) {
// This is the first time here with some central directory content. We
// construct this set of names only on demand. Prepare set and block.
set_start(&zip->set);
block_init(&zip->block, &zip->central_dir);
}
// Update the set of names from the current central directory contents.
// This reads any new central directory records since the last time we were
// here.
for (;;) {
char *there = block_central_name(&zip->block, &zip->set);
if (there == NULL) {
if (zip->block.next == NULL)
// The central directory is invalid.
return -1;
break;
}
// Add there to the set.
if (set_insert(&zip->set, there))
// There's already a duplicate in the central directory! We'll just
// let this be and carry on.
set_free(&zip->set, there);
}
// Return true if name is in the central directory.
return set_found(&zip->set, name);
}
/****************************************************************************/
#ifndef NO_ADDFILEINEXISTINGZIP
/* ===========================================================================
Inputs a long in LSB order to the given file
nbByte == 1, 2 ,4 or 8 (byte, short or long, ZPOS64_T)
*/
local int zip64local_putValue(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte) {
unsigned char buf[8];
int n;
for (n = 0; n < nbByte; n++)
{
buf[n] = (unsigned char)(x & 0xff);
x >>= 8;
}
if (x != 0)
{ /* data overflow - hack for ZIP64 (X Roche) */
for (n = 0; n < nbByte; n++)
{
buf[n] = 0xff;
}
}
if (ZWRITE64(*pzlib_filefunc_def,filestream,buf,(uLong)nbByte)!=(uLong)nbByte)
return ZIP_ERRNO;
else
return ZIP_OK;
}
local void zip64local_putValue_inmemory (void* dest, ZPOS64_T x, int nbByte) {
unsigned char* buf=(unsigned char*)dest;
int n;
for (n = 0; n < nbByte; n++) {
buf[n] = (unsigned char)(x & 0xff);
x >>= 8;
}
if (x != 0)
{ /* data overflow - hack for ZIP64 */
for (n = 0; n < nbByte; n++)
{
buf[n] = 0xff;
}
}
}
/****************************************************************************/
local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm) {
uLong year = (uLong)ptm->tm_year;
if (year>=1980)
year-=1980;
else if (year>=80)
year-=80;
return
(uLong) (((uLong)(ptm->tm_mday) + (32 * (uLong)(ptm->tm_mon+1)) + (512 * year)) << 16) |
(((uLong)ptm->tm_sec/2) + (32 * (uLong)ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
}
/****************************************************************************/
local int zip64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int* pi) {
unsigned char c;
int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1);
if (err==1)
{
*pi = (int)c;
return ZIP_OK;
}
else
{
if (ZERROR64(*pzlib_filefunc_def,filestream))
return ZIP_ERRNO;
else
return ZIP_EOF;
}
}
/* ===========================================================================
Reads a long in LSB order from the given gz_stream. Sets
*/
local int zip64local_getShort(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) {
uLong x ;
int i = 0;
int err;
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x = (uLong)i;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((uLong)i)<<8;
if (err==ZIP_OK)
*pX = x;
else
*pX = 0;
return err;
}
local int zip64local_getLong(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) {
uLong x ;
int i = 0;
int err;
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x = (uLong)i;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((uLong)i)<<8;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((uLong)i)<<16;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((uLong)i)<<24;
if (err==ZIP_OK)
*pX = x;
else
*pX = 0;
return err;
}
local int zip64local_getLong64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX) {
ZPOS64_T x;
int i = 0;
int err;
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x = (ZPOS64_T)i;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<8;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<16;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<24;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<32;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<40;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<48;
if (err==ZIP_OK)
err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
x += ((ZPOS64_T)i)<<56;
if (err==ZIP_OK)
*pX = x;
else
*pX = 0;
return err;
}
#ifndef BUFREADCOMMENT
#define BUFREADCOMMENT (0x400)
#endif
/*
Locate the Central directory of a zipfile (at the end, just before
the global comment)
*/
local ZPOS64_T zip64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) {
unsigned char* buf;
ZPOS64_T uSizeFile;
ZPOS64_T uBackRead;
ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
ZPOS64_T uPosFound=0;
if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
return 0;
uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);
if (uMaxBack>uSizeFile)
uMaxBack = uSizeFile;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf==NULL)
return 0;
uBackRead = 4;
while (uBackRead<uMaxBack)
{
uLong uReadSize;
ZPOS64_T uReadPos ;
int i;
if (uBackRead+BUFREADCOMMENT>uMaxBack)
uBackRead = uMaxBack;
else
uBackRead+=BUFREADCOMMENT;
uReadPos = uSizeFile-uBackRead ;
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
(BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
break;
if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
break;
for (i=(int)uReadSize-3; (i--)>0;)
if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
{
uPosFound = uReadPos+(unsigned)i;
break;
}
if (uPosFound!=0)
break;
}
free(buf);
return uPosFound;
}
/*
Locate the End of Zip64 Central directory locator and from there find the CD of a zipfile (at the end, just before
the global comment)
*/
local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) {
unsigned char* buf;
ZPOS64_T uSizeFile;
ZPOS64_T uBackRead;
ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
ZPOS64_T uPosFound=0;
uLong uL;
ZPOS64_T relativeOffset;
if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
return 0;
uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);
if (uMaxBack>uSizeFile)
uMaxBack = uSizeFile;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf==NULL)
return 0;
uBackRead = 4;
while (uBackRead<uMaxBack)
{
uLong uReadSize;
ZPOS64_T uReadPos;
int i;
if (uBackRead+BUFREADCOMMENT>uMaxBack)
uBackRead = uMaxBack;
else
uBackRead+=BUFREADCOMMENT;
uReadPos = uSizeFile-uBackRead ;
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
(BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
break;
if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
break;
for (i=(int)uReadSize-3; (i--)>0;)
{
// Signature "0x07064b50" Zip64 end of central directory locator
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;
}
free(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 (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
return 0;
/* number of the disk with the start of the zip64 end of central directory */
if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
return 0;
if (uL != 0)
return 0;
/* relative offset of the zip64 end of central directory record */
if (zip64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=ZIP_OK)
return 0;
/* total number of disks */
if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
return 0;
if (uL != 1)
return 0;
/* Goto Zip64 end of central directory record */
if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0)
return 0;
/* the signature */
if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
return 0;
if (uL != 0x06064b50) // signature of 'Zip64 end of central directory'
return 0;
return relativeOffset;
}
local int LoadCentralDirectoryRecord(zip64_internal* pziinit) {
int err=ZIP_OK;
ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
ZPOS64_T size_central_dir; /* size of the central directory */
ZPOS64_T offset_central_dir; /* offset of start of central directory */
ZPOS64_T central_pos;
uLong uL;
uLong number_disk; /* number of the current disk, used for
spanning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number of the disk with central dir, used
for spanning ZIP, unsupported, always 0*/
ZPOS64_T number_entry;
ZPOS64_T number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
uLong VersionMadeBy;
uLong VersionNeeded;
uLong size_comment;
int hasZIP64Record = 0;
// check first if we find a ZIP64 record
central_pos = zip64local_SearchCentralDir64(&pziinit->z_filefunc,pziinit->filestream);
if(central_pos > 0)
{
hasZIP64Record = 1;
}
else if(central_pos == 0)
{
central_pos = zip64local_SearchCentralDir(&pziinit->z_filefunc,pziinit->filestream);
}
/* disable to allow appending to empty ZIP archive
if (central_pos==0)
err=ZIP_ERRNO;
*/
if(hasZIP64Record)
{
ZPOS64_T sizeEndOfCentralDirectory;
if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
err=ZIP_ERRNO;
/* the signature, already checked */
if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK)
err=ZIP_ERRNO;
/* size of zip64 end of central directory record */
if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &sizeEndOfCentralDirectory)!=ZIP_OK)
err=ZIP_ERRNO;
/* version made by */
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionMadeBy)!=ZIP_OK)
err=ZIP_ERRNO;
/* version needed to extract */
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionNeeded)!=ZIP_OK)
err=ZIP_ERRNO;
/* number of this disk */
if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK)
err=ZIP_ERRNO;
/* number of the disk with the start of the central directory */
if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK)
err=ZIP_ERRNO;
/* total number of entries in the central directory on this disk */
if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &number_entry)!=ZIP_OK)
err=ZIP_ERRNO;
/* total number of entries in the central directory */
if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&number_entry_CD)!=ZIP_OK)
err=ZIP_ERRNO;
if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0))
err=ZIP_BADZIPFILE;
/* size of the central directory */
if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&size_central_dir)!=ZIP_OK)
err=ZIP_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&offset_central_dir)!=ZIP_OK)
err=ZIP_ERRNO;
// TODO..
// read the comment from the standard central header.
size_comment = 0;
}
else
{
// Read End of central Directory info
if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
err=ZIP_ERRNO;
/* the signature, already checked */
if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK)
err=ZIP_ERRNO;
/* number of this disk */
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK)
err=ZIP_ERRNO;
/* number of the disk with the start of the central directory */
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK)
err=ZIP_ERRNO;
/* total number of entries in the central dir on this disk */
number_entry = 0;
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
err=ZIP_ERRNO;
else
number_entry = uL;
/* total number of entries in the central dir */
number_entry_CD = 0;
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
err=ZIP_ERRNO;
else
number_entry_CD = uL;
if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0))
err=ZIP_BADZIPFILE;
/* size of the central directory */
size_central_dir = 0;
if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
err=ZIP_ERRNO;
else
size_central_dir = uL;
/* offset of start of central directory with respect to the starting disk number */
offset_central_dir = 0;
if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
err=ZIP_ERRNO;
else
offset_central_dir = uL;
/* zipfile global comment length */
if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &size_comment)!=ZIP_OK)
err=ZIP_ERRNO;
}
if ((central_pos<offset_central_dir+size_central_dir) &&
(err==ZIP_OK))
err=ZIP_BADZIPFILE;
if (err!=ZIP_OK)
{
ZCLOSE64(pziinit->z_filefunc, pziinit->filestream);
return ZIP_ERRNO;
}
if (size_comment>0)
{
pziinit->globalcomment = (char*)ALLOC(size_comment+1);
if (pziinit->globalcomment)
{
size_comment = ZREAD64(pziinit->z_filefunc, pziinit->filestream, pziinit->globalcomment,size_comment);
pziinit->globalcomment[size_comment]=0;
}
}
byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir);
pziinit->add_position_when_writing_offset = byte_before_the_zipfile;
{
ZPOS64_T size_central_dir_to_read = size_central_dir;
size_t buf_size = SIZEDATA_INDATABLOCK;
void* buf_read = (void*)ALLOC(buf_size);
if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir + byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
err=ZIP_ERRNO;
while ((size_central_dir_to_read>0) && (err==ZIP_OK))
{
ZPOS64_T read_this = SIZEDATA_INDATABLOCK;
if (read_this > size_central_dir_to_read)
read_this = size_central_dir_to_read;
if (ZREAD64(pziinit->z_filefunc, pziinit->filestream,buf_read,(uLong)read_this) != read_this)
err=ZIP_ERRNO;
if (err==ZIP_OK)
err = add_data_in_datablock(&pziinit->central_dir,buf_read, (uLong)read_this);
size_central_dir_to_read-=read_this;
}
free(buf_read);
}
pziinit->begin_pos = byte_before_the_zipfile;
pziinit->number_entry = number_entry_CD;
if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET) != 0)
err=ZIP_ERRNO;
return err;
}
#endif /* !NO_ADDFILEINEXISTINGZIP*/
/************************************************************/
extern zipFile ZEXPORT zipOpen3(const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_32_def* pzlib_filefunc64_32_def) {
zip64_internal ziinit;
zip64_internal* zi;
int err=ZIP_OK;
ziinit.z_filefunc.zseek32_file = NULL;
ziinit.z_filefunc.ztell32_file = NULL;
if (pzlib_filefunc64_32_def==NULL)
fill_fopen64_filefunc(&ziinit.z_filefunc.zfile_func64);
else
ziinit.z_filefunc = *pzlib_filefunc64_32_def;
ziinit.filestream = ZOPEN64(ziinit.z_filefunc,
pathname,
(append == APPEND_STATUS_CREATE) ?
(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
if (ziinit.filestream == NULL)
return NULL;
if (append == APPEND_STATUS_CREATEAFTER)
ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END);
ziinit.begin_pos = ZTELL64(ziinit.z_filefunc,ziinit.filestream);
ziinit.in_opened_file_inzip = 0;
ziinit.ci.stream_initialised = 0;
ziinit.number_entry = 0;
ziinit.add_position_when_writing_offset = 0;
init_linkedlist(&(ziinit.central_dir));
memset(&ziinit.set, 0, sizeof(set_t)); // make sure set appears dormant
zi = (zip64_internal*)ALLOC(sizeof(zip64_internal));
if (zi==NULL)
{
ZCLOSE64(ziinit.z_filefunc,ziinit.filestream);
return NULL;
}
/* now we add file in a zipfile */
# ifndef NO_ADDFILEINEXISTINGZIP
ziinit.globalcomment = NULL;
if (append == APPEND_STATUS_ADDINZIP)
{
// Read and Cache Central Directory Records
err = LoadCentralDirectoryRecord(&ziinit);
}
if (globalcomment)
{
*globalcomment = ziinit.globalcomment;
}
# endif /* !NO_ADDFILEINEXISTINGZIP*/
if (err != ZIP_OK)
{
# ifndef NO_ADDFILEINEXISTINGZIP
free(ziinit.globalcomment);
# endif /* !NO_ADDFILEINEXISTINGZIP*/
free(zi);
return NULL;
}
else
{
*zi = ziinit;
return (zipFile)zi;
}
}
extern zipFile ZEXPORT zipOpen2(const char *pathname, int append, zipcharpc* globalcomment, zlib_filefunc_def* pzlib_filefunc32_def) {
if (pzlib_filefunc32_def != NULL)
{
zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def);
return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill);
}
else
return zipOpen3(pathname, append, globalcomment, NULL);
}
extern zipFile ZEXPORT zipOpen2_64(const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_def* pzlib_filefunc_def) {
if (pzlib_filefunc_def != NULL)
{
zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
zlib_filefunc64_32_def_fill.ztell32_file = NULL;
zlib_filefunc64_32_def_fill.zseek32_file = NULL;
return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill);
}
else
return zipOpen3(pathname, append, globalcomment, NULL);
}
extern zipFile ZEXPORT zipOpen(const char* pathname, int append) {
return zipOpen3((const void*)pathname,append,NULL,NULL);
}
extern zipFile ZEXPORT zipOpen64(const void* pathname, int append) {
return zipOpen3(pathname,append,NULL,NULL);
}
local int Write_LocalFileHeader(zip64_internal* zi, const char* filename, uInt size_extrafield_local, const void* extrafield_local) {
/* write the local header */
int err;
uInt size_filename = (uInt)strlen(filename);
uInt size_extrafield = size_extrafield_local;
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC, 4);
if (err==ZIP_OK)
{
if(zi->ci.zip64)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);/* version needed to extract */
else
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
}
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
// CRC / Compressed size / Uncompressed size will be filled in later and rewritten later
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
if (err==ZIP_OK)
{
if(zi->ci.zip64)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* compressed size, unknown */
else
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
}
if (err==ZIP_OK)
{
if(zi->ci.zip64)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* uncompressed size, unknown */
else
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
}
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
if(zi->ci.zip64)
{
size_extrafield += 20;
}
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield,2);
if ((err==ZIP_OK) && (size_filename > 0))
{
if (ZWRITE64(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
err = ZIP_ERRNO;
}
if ((err==ZIP_OK) && (size_extrafield_local > 0))
{
if (ZWRITE64(zi->z_filefunc, zi->filestream, extrafield_local, size_extrafield_local) != size_extrafield_local)
err = ZIP_ERRNO;
}
if ((err==ZIP_OK) && (zi->ci.zip64))
{
// write the Zip64 extended info
short HeaderID = 1;
short DataSize = 16;
ZPOS64_T CompressedSize = 0;
ZPOS64_T UncompressedSize = 0;
// Remember position of Zip64 extended info for the local file header. (needed when we update size after done with file)
zi->ci.pos_zip64extrainfo = ZTELL64(zi->z_filefunc,zi->filestream);
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)HeaderID,2);
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)DataSize,2);
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)UncompressedSize,8);
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)CompressedSize,8);
}
return err;
}
/*
NOTE.
When writing RAW the ZIP64 extended information in extrafield_local and extrafield_global needs to be stripped
before calling this function it can be done with zipRemoveExtraInfoBlock
It is not done here because then we need to realloc a new buffer since parameters are 'const' and I want to minimize
unnecessary allocations.
*/
extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void* extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int raw,
int windowBits,int memLevel, int strategy,
const char* password, uLong crcForCrypting,
uLong versionMadeBy, uLong flagBase, int zip64) {
zip64_internal* zi;
uInt size_filename;
uInt size_comment;
uInt i;
int err = ZIP_OK;
# ifdef NOCRYPT
if (password != NULL)
return ZIP_PARAMERROR;
# endif
if (file == NULL)
return ZIP_PARAMERROR;
#ifdef HAVE_BZIP2
if ((method!=0) && (method!=Z_DEFLATED) && (method!=Z_BZIP2ED))
return ZIP_PARAMERROR;
#else
if ((method!=0) && (method!=Z_DEFLATED))
return ZIP_PARAMERROR;
#endif
// The filename and comment length must fit in 16 bits.
if ((filename!=NULL) && (strlen(filename)>0xffff))
return ZIP_PARAMERROR;
if ((comment!=NULL) && (strlen(comment)>0xffff))
return ZIP_PARAMERROR;
// The extra field length must fit in 16 bits. If the member also requires
// a Zip64 extra block, that will also need to fit within that 16-bit
// length, but that will be checked for later.
if ((size_extrafield_local>0xffff) || (size_extrafield_global>0xffff))
return ZIP_PARAMERROR;
zi = (zip64_internal*)file;
if (zi->in_opened_file_inzip == 1)
{
err = zipCloseFileInZip (file);
if (err != ZIP_OK)
return err;
}
if (filename==NULL)
filename="-";
if (comment==NULL)
size_comment = 0;
else
size_comment = (uInt)strlen(comment);
size_filename = (uInt)strlen(filename);
if (zipfi == NULL)
zi->ci.dosDate = 0;
else
{
if (zipfi->dosDate != 0)
zi->ci.dosDate = zipfi->dosDate;
else
zi->ci.dosDate = zip64local_TmzDateToDosDate(&zipfi->tmz_date);
}
zi->ci.flag = flagBase;
if ((level==8) || (level==9))
zi->ci.flag |= 2;
if (level==2)
zi->ci.flag |= 4;
if (level==1)
zi->ci.flag |= 6;
if (password != NULL)
zi->ci.flag |= 1;
zi->ci.crc32 = 0;
zi->ci.method = method;
zi->ci.encrypt = 0;
zi->ci.stream_initialised = 0;
zi->ci.pos_in_buffered_data = 0;
zi->ci.raw = raw;
zi->ci.pos_local_header = ZTELL64(zi->z_filefunc,zi->filestream);
zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + size_extrafield_global + size_comment;
zi->ci.size_centralExtraFree = 32; // Extra space we have reserved in case we need to add ZIP64 extra info data
zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->ci.size_centralExtraFree);
zi->ci.size_centralExtra = size_extrafield_global;
zip64local_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
/* version info */
zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)versionMadeBy,2);
zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
zip64local_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
zip64local_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
zip64local_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
zip64local_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
zip64local_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
zip64local_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
zip64local_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
zip64local_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
zip64local_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
if (zipfi==NULL)
zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
else
zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
if (zipfi==NULL)
zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
else
zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
if(zi->ci.pos_local_header >= 0xffffffff)
zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)0xffffffff,4);
else
zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header - zi->add_position_when_writing_offset,4);
for (i=0;i<size_filename;i++)
*(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);
for (i=0;i<size_extrafield_global;i++)
*(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
*(((const char*)extrafield_global)+i);
for (i=0;i<size_comment;i++)
*(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
size_extrafield_global+i) = *(comment+i);
if (zi->ci.central_header == NULL)
return ZIP_INTERNALERROR;
zi->ci.zip64 = zip64;
zi->ci.totalCompressedData = 0;
zi->ci.totalUncompressedData = 0;
zi->ci.pos_zip64extrainfo = 0;
err = Write_LocalFileHeader(zi, filename, size_extrafield_local, extrafield_local);
#ifdef HAVE_BZIP2
zi->ci.bstream.avail_in = (uInt)0;
zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
zi->ci.bstream.total_in_hi32 = 0;
zi->ci.bstream.total_in_lo32 = 0;
zi->ci.bstream.total_out_hi32 = 0;
zi->ci.bstream.total_out_lo32 = 0;
#endif
zi->ci.stream.avail_in = (uInt)0;
zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.stream.next_out = zi->ci.buffered_data;
zi->ci.stream.total_in = 0;
zi->ci.stream.total_out = 0;
zi->ci.stream.data_type = Z_BINARY;
#ifdef HAVE_BZIP2
if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED || zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
#else
if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
#endif
{
if(zi->ci.method == Z_DEFLATED)
{
zi->ci.stream.zalloc = (alloc_func)0;
zi->ci.stream.zfree = (free_func)0;
zi->ci.stream.opaque = (voidpf)0;
if (windowBits>0)
windowBits = -windowBits;
err = deflateInit2(&zi->ci.stream, level, Z_DEFLATED, windowBits, memLevel, strategy);
if (err==Z_OK)
zi->ci.stream_initialised = Z_DEFLATED;
}
else if(zi->ci.method == Z_BZIP2ED)
{
#ifdef HAVE_BZIP2
// Init BZip stuff here
zi->ci.bstream.bzalloc = 0;
zi->ci.bstream.bzfree = 0;
zi->ci.bstream.opaque = (voidpf)0;
err = BZ2_bzCompressInit(&zi->ci.bstream, level, 0,35);
if(err == BZ_OK)
zi->ci.stream_initialised = Z_BZIP2ED;
#endif
}
}
# ifndef NOCRYPT
zi->ci.crypt_header_size = 0;
if ((err==Z_OK) && (password != NULL))
{
unsigned char bufHead[RAND_HEAD_LEN];
unsigned int sizeHead;
zi->ci.encrypt = 1;
zi->ci.pcrc_32_tab = get_crc_table();
/*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
zi->ci.crypt_header_size = sizeHead;
if (ZWRITE64(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
err = ZIP_ERRNO;
}
# endif
if (err==Z_OK)
zi->in_opened_file_inzip = 1;
return err;
}
extern int ZEXPORT zipOpenNewFileInZip4(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void* extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int raw,
int windowBits,int memLevel, int strategy,
const char* password, uLong crcForCrypting,
uLong versionMadeBy, uLong flagBase) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, raw,
windowBits, memLevel, strategy,
password, crcForCrypting, versionMadeBy, flagBase, 0);
}
extern int ZEXPORT zipOpenNewFileInZip3(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void* extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int raw,
int windowBits,int memLevel, int strategy,
const char* password, uLong crcForCrypting) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, raw,
windowBits, memLevel, strategy,
password, crcForCrypting, VERSIONMADEBY, 0, 0);
}
extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void* extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int raw,
int windowBits,int memLevel, int strategy,
const char* password, uLong crcForCrypting, int zip64) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, raw,
windowBits, memLevel, strategy,
password, crcForCrypting, VERSIONMADEBY, 0, zip64);
}
extern int ZEXPORT zipOpenNewFileInZip2(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void* extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int raw) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, raw,
-MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
NULL, 0, VERSIONMADEBY, 0, 0);
}
extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void* extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int raw, int zip64) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, raw,
-MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
NULL, 0, VERSIONMADEBY, 0, zip64);
}
extern int ZEXPORT zipOpenNewFileInZip64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void*extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level, int zip64) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, 0,
-MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
NULL, 0, VERSIONMADEBY, 0, zip64);
}
extern int ZEXPORT zipOpenNewFileInZip(zipFile file, const char* filename, const zip_fileinfo* zipfi,
const void* extrafield_local, uInt size_extrafield_local,
const void*extrafield_global, uInt size_extrafield_global,
const char* comment, int method, int level) {
return zipOpenNewFileInZip4_64(file, filename, zipfi,
extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global,
comment, method, level, 0,
-MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
NULL, 0, VERSIONMADEBY, 0, 0);
}
local int zip64FlushWriteBuffer(zip64_internal* zi) {
int err=ZIP_OK;
if (zi->ci.encrypt != 0)
{
#ifndef NOCRYPT
uInt i;
int t;
for (i=0;i<zi->ci.pos_in_buffered_data;i++)
zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab, zi->ci.buffered_data[i],t);
#endif
}
if (ZWRITE64(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data) != zi->ci.pos_in_buffered_data)
err = ZIP_ERRNO;
zi->ci.totalCompressedData += zi->ci.pos_in_buffered_data;
#ifdef HAVE_BZIP2
if(zi->ci.method == Z_BZIP2ED)
{
zi->ci.totalUncompressedData += zi->ci.bstream.total_in_lo32;
zi->ci.bstream.total_in_lo32 = 0;
zi->ci.bstream.total_in_hi32 = 0;
}
else
#endif
{
zi->ci.totalUncompressedData += zi->ci.stream.total_in;
zi->ci.stream.total_in = 0;
}
zi->ci.pos_in_buffered_data = 0;
return err;
}
extern int ZEXPORT zipWriteInFileInZip(zipFile file, const void* buf, unsigned int len) {
zip64_internal* zi;
int err=ZIP_OK;
if (file == NULL)
return ZIP_PARAMERROR;
zi = (zip64_internal*)file;
if (zi->in_opened_file_inzip == 0)
return ZIP_PARAMERROR;
zi->ci.crc32 = crc32(zi->ci.crc32,buf,(uInt)len);
#ifdef HAVE_BZIP2
if(zi->ci.method == Z_BZIP2ED && (!zi->ci.raw))
{
zi->ci.bstream.next_in = (void*)buf;
zi->ci.bstream.avail_in = len;
err = BZ_RUN_OK;
while ((err==BZ_RUN_OK) && (zi->ci.bstream.avail_in>0))
{
if (zi->ci.bstream.avail_out == 0)
{
if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
err = ZIP_ERRNO;
zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
}
if(err != BZ_RUN_OK)
break;
if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
{
uLong uTotalOutBefore_lo = zi->ci.bstream.total_out_lo32;
// uLong uTotalOutBefore_hi = zi->ci.bstream.total_out_hi32;
err=BZ2_bzCompress(&zi->ci.bstream, BZ_RUN);
zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore_lo) ;
}
}
if(err == BZ_RUN_OK)
err = ZIP_OK;
}
else
#endif
{
zi->ci.stream.next_in = (Bytef*)(uintptr_t)buf;
zi->ci.stream.avail_in = len;
while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
{
if (zi->ci.stream.avail_out == 0)
{
if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
err = ZIP_ERRNO;
zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.stream.next_out = zi->ci.buffered_data;
}
if(err != ZIP_OK)
break;
if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
{
uLong uTotalOutBefore = zi->ci.stream.total_out;
err=deflate(&zi->ci.stream, Z_NO_FLUSH);
zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
}
else
{
uInt copy_this,i;
if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
copy_this = zi->ci.stream.avail_in;
else
copy_this = zi->ci.stream.avail_out;
for (i = 0; i < copy_this; i++)
*(((char*)zi->ci.stream.next_out)+i) =
*(((const char*)zi->ci.stream.next_in)+i);
{
zi->ci.stream.avail_in -= copy_this;
zi->ci.stream.avail_out-= copy_this;
zi->ci.stream.next_in+= copy_this;
zi->ci.stream.next_out+= copy_this;
zi->ci.stream.total_in+= copy_this;
zi->ci.stream.total_out+= copy_this;
zi->ci.pos_in_buffered_data += copy_this;
}
}
}// while(...)
}
return err;
}
extern int ZEXPORT zipCloseFileInZipRaw(zipFile file, uLong uncompressed_size, uLong crc32) {
return zipCloseFileInZipRaw64 (file, uncompressed_size, crc32);
}
extern int ZEXPORT zipCloseFileInZipRaw64(zipFile file, ZPOS64_T uncompressed_size, uLong crc32) {
zip64_internal* zi;
ZPOS64_T compressed_size;
uLong invalidValue = 0xffffffff;
unsigned datasize = 0;
int err=ZIP_OK;
if (file == NULL)
return ZIP_PARAMERROR;
zi = (zip64_internal*)file;
if (zi->in_opened_file_inzip == 0)
return ZIP_PARAMERROR;
zi->ci.stream.avail_in = 0;
if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
{
while (err==ZIP_OK)
{
uLong uTotalOutBefore;
if (zi->ci.stream.avail_out == 0)
{
if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
err = ZIP_ERRNO;
zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.stream.next_out = zi->ci.buffered_data;
}
uTotalOutBefore = zi->ci.stream.total_out;
err=deflate(&zi->ci.stream, Z_FINISH);
zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
}
}
else if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
{
#ifdef HAVE_BZIP2
err = BZ_FINISH_OK;
while (err==BZ_FINISH_OK)
{
uLong uTotalOutBefore;
if (zi->ci.bstream.avail_out == 0)
{
if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
err = ZIP_ERRNO;
zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
}
uTotalOutBefore = zi->ci.bstream.total_out_lo32;
err=BZ2_bzCompress(&zi->ci.bstream, BZ_FINISH);
if(err == BZ_STREAM_END)
err = Z_STREAM_END;
zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore);
}
if(err == BZ_FINISH_OK)
err = ZIP_OK;
#endif
}
if (err==Z_STREAM_END)
err=ZIP_OK; /* this is normal */
if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
{
if (zip64FlushWriteBuffer(zi)==ZIP_ERRNO)
err = ZIP_ERRNO;
}
if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
{
int tmp_err = deflateEnd(&zi->ci.stream);
if (err == ZIP_OK)
err = tmp_err;
zi->ci.stream_initialised = 0;
}
#ifdef HAVE_BZIP2
else if((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
{
int tmperr = BZ2_bzCompressEnd(&zi->ci.bstream);
if (err==ZIP_OK)
err = tmperr;
zi->ci.stream_initialised = 0;
}
#endif
if (!zi->ci.raw)
{
crc32 = (uLong)zi->ci.crc32;
uncompressed_size = zi->ci.totalUncompressedData;
}
compressed_size = zi->ci.totalCompressedData;
# ifndef NOCRYPT
compressed_size += zi->ci.crypt_header_size;
# endif
// update Current Item crc and sizes,
if(compressed_size >= 0xffffffff || uncompressed_size >= 0xffffffff || zi->ci.pos_local_header >= 0xffffffff)
{
/*version Made by*/
zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)45,2);
/*version needed*/
zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)45,2);
}
zip64local_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
if(compressed_size >= 0xffffffff)
zip64local_putValue_inmemory(zi->ci.central_header+20, invalidValue,4); /*compr size*/
else
zip64local_putValue_inmemory(zi->ci.central_header+20, compressed_size,4); /*compr size*/
/// set internal file attributes field
if (zi->ci.stream.data_type == Z_ASCII)
zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
if(uncompressed_size >= 0xffffffff)
zip64local_putValue_inmemory(zi->ci.central_header+24, invalidValue,4); /*uncompr size*/
else
zip64local_putValue_inmemory(zi->ci.central_header+24, uncompressed_size,4); /*uncompr size*/
// Add ZIP64 extra info field for uncompressed size
if(uncompressed_size >= 0xffffffff)
datasize += 8;
// Add ZIP64 extra info field for compressed size
if(compressed_size >= 0xffffffff)
datasize += 8;
// Add ZIP64 extra info field for relative offset to local file header of current file
if(zi->ci.pos_local_header >= 0xffffffff)
datasize += 8;
if(datasize > 0)
{
char* p = NULL;
if((uLong)(datasize + 4) > zi->ci.size_centralExtraFree)
{
// we cannot write more data to the buffer that we have room for.
return ZIP_BADZIPFILE;
}
p = zi->ci.central_header + zi->ci.size_centralheader;
// Add Extra Information Header for 'ZIP64 information'
zip64local_putValue_inmemory(p, 0x0001, 2); // HeaderID
p += 2;
zip64local_putValue_inmemory(p, datasize, 2); // DataSize
p += 2;
if(uncompressed_size >= 0xffffffff)
{
zip64local_putValue_inmemory(p, uncompressed_size, 8);
p += 8;
}
if(compressed_size >= 0xffffffff)
{
zip64local_putValue_inmemory(p, compressed_size, 8);
p += 8;
}
if(zi->ci.pos_local_header >= 0xffffffff)
{
zip64local_putValue_inmemory(p, zi->ci.pos_local_header, 8);
p += 8;
}
// Update how much extra free space we got in the memory buffer
// and increase the centralheader size so the new ZIP64 fields are included
// ( 4 below is the size of HeaderID and DataSize field )
zi->ci.size_centralExtraFree -= datasize + 4;
zi->ci.size_centralheader += datasize + 4;
// Update the extra info size field
zi->ci.size_centralExtra += datasize + 4;
zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)zi->ci.size_centralExtra,2);
}
if (err==ZIP_OK)
err = add_data_in_datablock(&zi->central_dir, zi->ci.central_header, (uLong)zi->ci.size_centralheader);
free(zi->ci.central_header);
if (err==ZIP_OK)
{
// Update the LocalFileHeader with the new values.
ZPOS64_T cur_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream);
if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
err = ZIP_ERRNO;
if (err==ZIP_OK)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
if(uncompressed_size >= 0xffffffff || compressed_size >= 0xffffffff )
{
if(zi->ci.pos_zip64extrainfo > 0)
{
// Update the size in the ZIP64 extended field.
if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_zip64extrainfo + 4,ZLIB_FILEFUNC_SEEK_SET)!=0)
err = ZIP_ERRNO;
if (err==ZIP_OK) /* compressed size, unknown */
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, uncompressed_size, 8);
if (err==ZIP_OK) /* uncompressed size, unknown */
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, compressed_size, 8);
}
else
err = ZIP_BADZIPFILE; // Caller passed zip64 = 0, so no room for zip64 info -> fatal
}
else
{
if (err==ZIP_OK) /* compressed size, unknown */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
if (err==ZIP_OK) /* uncompressed size, unknown */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
}
if (ZSEEK64(zi->z_filefunc,zi->filestream, cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
err = ZIP_ERRNO;
}
zi->number_entry ++;
zi->in_opened_file_inzip = 0;
return err;
}
extern int ZEXPORT zipCloseFileInZip(zipFile file) {
return zipCloseFileInZipRaw (file,0,0);
}
local int Write_Zip64EndOfCentralDirectoryLocator(zip64_internal* zi, ZPOS64_T zip64eocd_pos_inzip) {
int err = ZIP_OK;
ZPOS64_T pos = zip64eocd_pos_inzip - zi->add_position_when_writing_offset;
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDLOCHEADERMAGIC,4);
/*num disks*/
if (err==ZIP_OK) /* number of the disk with the start of the central directory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);
/*relative offset*/
if (err==ZIP_OK) /* Relative offset to the Zip64EndOfCentralDirectory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream, pos,8);
/*total disks*/ /* Do not support spawning of disk so always say 1 here*/
if (err==ZIP_OK) /* number of the disk with the start of the central directory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)1,4);
return err;
}
local int Write_Zip64EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) {
int err = ZIP_OK;
uLong Zip64DataSize = 44;
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDHEADERMAGIC,4);
if (err==ZIP_OK) /* size of this 'zip64 end of central directory' */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)Zip64DataSize,8); // why ZPOS64_T of this ?
if (err==ZIP_OK) /* version made by */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);
if (err==ZIP_OK) /* version needed */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);
if (err==ZIP_OK) /* number of this disk */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);
if (err==ZIP_OK) /* number of the disk with the start of the central directory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);
if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);
if (err==ZIP_OK) /* total number of entries in the central dir */
err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);
if (err==ZIP_OK) /* size of the central directory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)size_centraldir,8);
if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */
{
ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (ZPOS64_T)pos,8);
}
return err;
}
local int Write_EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) {
int err = ZIP_OK;
/*signature*/
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
if (err==ZIP_OK) /* number of this disk */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
if (err==ZIP_OK) /* number of the disk with the start of the central directory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
{
{
if(zi->number_entry >= 0xFFFF)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record
else
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
}
}
if (err==ZIP_OK) /* total number of entries in the central dir */
{
if(zi->number_entry >= 0xFFFF)
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record
else
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
}
if (err==ZIP_OK) /* size of the central directory */
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);
if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */
{
ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
if(pos >= 0xffffffff)
{
err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)0xffffffff,4);
}
else
err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)(centraldir_pos_inzip - zi->add_position_when_writing_offset),4);
}
return err;
}
local int Write_GlobalComment(zip64_internal* zi, const char* global_comment) {
int err = ZIP_OK;
uInt size_global_comment = 0;
if(global_comment != NULL)
size_global_comment = (uInt)strlen(global_comment);
err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
if (err == ZIP_OK && size_global_comment > 0)
{
if (ZWRITE64(zi->z_filefunc,zi->filestream, global_comment, size_global_comment) != size_global_comment)
err = ZIP_ERRNO;
}
return err;
}
extern int ZEXPORT zipClose(zipFile file, const char* global_comment) {
zip64_internal* zi;
int err = 0;
uLong size_centraldir = 0;
ZPOS64_T centraldir_pos_inzip;
ZPOS64_T pos;
if (file == NULL)
return ZIP_PARAMERROR;
zi = (zip64_internal*)file;
if (zi->in_opened_file_inzip == 1)
{
err = zipCloseFileInZip (file);
}
#ifndef NO_ADDFILEINEXISTINGZIP
if (global_comment==NULL)
global_comment = zi->globalcomment;
#endif
centraldir_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream);
if (err==ZIP_OK)
{
linkedlist_datablock_internal* ldi = zi->central_dir.first_block;
while (ldi!=NULL)
{
if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
{
if (ZWRITE64(zi->z_filefunc,zi->filestream, ldi->data, ldi->filled_in_this_block) != ldi->filled_in_this_block)
err = ZIP_ERRNO;
}
size_centraldir += ldi->filled_in_this_block;
ldi = ldi->next_datablock;
}
}
free_linkedlist(&(zi->central_dir));
set_end(&zi->set); // set was zeroed, so this is safe
pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
if(pos >= 0xffffffff || zi->number_entry >= 0xFFFF)
{
ZPOS64_T Zip64EOCDpos = ZTELL64(zi->z_filefunc,zi->filestream);
Write_Zip64EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip);
Write_Zip64EndOfCentralDirectoryLocator(zi, Zip64EOCDpos);
}
if (err==ZIP_OK)
err = Write_EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip);
if(err == ZIP_OK)
err = Write_GlobalComment(zi, global_comment);
if (ZCLOSE64(zi->z_filefunc,zi->filestream) != 0)
if (err == ZIP_OK)
err = ZIP_ERRNO;
#ifndef NO_ADDFILEINEXISTINGZIP
free(zi->globalcomment);
#endif
free(zi);
return err;
}
extern int ZEXPORT zipRemoveExtraInfoBlock(char* pData, int* dataLen, short sHeader) {
char* p = pData;
int size = 0;
char* pNewHeader;
char* pTmp;
short header;
short dataSize;
int retVal = ZIP_OK;
if(pData == NULL || dataLen == NULL || *dataLen < 4)
return ZIP_PARAMERROR;
pNewHeader = (char*)ALLOC((unsigned)*dataLen);
pTmp = pNewHeader;
while(p < (pData + *dataLen))
{
header = *(short*)p;
dataSize = *(((short*)p)+1);
if( header == sHeader ) // Header found.
{
p += dataSize + 4; // skip it. do not copy to temp buffer
}
else
{
// Extra Info block should not be removed, So copy it to the temp buffer.
memcpy(pTmp, p, dataSize + 4);
p += dataSize + 4;
size += dataSize + 4;
}
}
if(size < *dataLen)
{
// clean old extra info block.
memset(pData,0, *dataLen);
// copy the new extra info block over the old
if(size > 0)
memcpy(pData, pNewHeader, size);
// set the new extra info size
*dataLen = size;
retVal = ZIP_OK;
}
else
retVal = ZIP_ERRNO;
free(pNewHeader);
return retVal;
}
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