1220 lines
36 KiB
C
1220 lines
36 KiB
C
/* zip.c -- IO on .zip files using zlib
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Version 1.01e, February 12th, 2005
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27 Dec 2004 Rolf Kalbermatter
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Modification to zipOpen2 to support globalComment retrieval.
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Copyright (C) 1998-2005 Gilles Vollant
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Read zip.h for more info
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "zlib.h"
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#include "zip.h"
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#ifdef STDC
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# include <stddef.h>
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# include <string.h>
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# include <stdlib.h>
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#endif
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#ifdef NO_ERRNO_H
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extern int errno;
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#else
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# include <errno.h>
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#endif
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#ifndef local
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# define local static
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#endif
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/* compile with -Dlocal if your debugger can't find static symbols */
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#ifndef VERSIONMADEBY
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# define VERSIONMADEBY (0x0) /* platform depedent */
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#endif
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#ifndef Z_BUFSIZE
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#define Z_BUFSIZE (16384)
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#endif
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#ifndef Z_MAXFILENAMEINZIP
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#define Z_MAXFILENAMEINZIP (256)
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#endif
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#ifndef ALLOC
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# define ALLOC(size) (malloc(size))
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#endif
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#ifndef TRYFREE
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# define TRYFREE(p) {if (p) free(p);}
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#endif
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/*
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#define SIZECENTRALDIRITEM (0x2e)
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#define SIZEZIPLOCALHEADER (0x1e)
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*/
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/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
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#ifndef SEEK_CUR
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#define SEEK_CUR 1
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#endif
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#ifndef SEEK_END
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#define SEEK_END 2
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#endif
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#ifndef SEEK_SET
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#define SEEK_SET 0
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#endif
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#ifndef DEF_MEM_LEVEL
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#if MAX_MEM_LEVEL >= 8
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# define DEF_MEM_LEVEL 8
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#else
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# define DEF_MEM_LEVEL MAX_MEM_LEVEL
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#endif
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#endif
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const char zip_copyright[] =
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" zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
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#define SIZEDATA_INDATABLOCK (4096-(4*4))
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#define LOCALHEADERMAGIC (0x04034b50)
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#define CENTRALHEADERMAGIC (0x02014b50)
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#define ENDHEADERMAGIC (0x06054b50)
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#define FLAG_LOCALHEADER_OFFSET (0x06)
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#define CRC_LOCALHEADER_OFFSET (0x0e)
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#define SIZECENTRALHEADER (0x2e) /* 46 */
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typedef struct linkedlist_datablock_internal_s
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{
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struct linkedlist_datablock_internal_s* next_datablock;
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uLong avail_in_this_block;
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uLong filled_in_this_block;
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uLong unused; /* for future use and alignement */
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unsigned char data[SIZEDATA_INDATABLOCK];
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} linkedlist_datablock_internal;
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typedef struct linkedlist_data_s
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{
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linkedlist_datablock_internal* first_block;
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linkedlist_datablock_internal* last_block;
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} linkedlist_data;
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typedef struct
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{
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z_stream stream; /* zLib stream structure for inflate */
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int stream_initialised; /* 1 is stream is initialised */
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uInt pos_in_buffered_data; /* last written byte in buffered_data */
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uLong pos_local_header; /* offset of the local header of the file
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currenty writing */
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char* central_header; /* central header data for the current file */
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uLong size_centralheader; /* size of the central header for cur file */
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uLong flag; /* flag of the file currently writing */
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int method; /* compression method of file currenty wr.*/
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int raw; /* 1 for directly writing raw data */
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Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
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uLong dosDate;
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uLong crc32;
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int encrypt;
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#ifndef NOCRYPT
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unsigned long keys[3]; /* keys defining the pseudo-random sequence */
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const unsigned long* pcrc_32_tab;
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int crypt_header_size;
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#endif
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} curfile_info;
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typedef struct
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{
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zlib_filefunc_def z_filefunc;
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voidpf filestream; /* io structore of the zipfile */
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linkedlist_data central_dir;/* datablock with central dir in construction*/
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int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/
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curfile_info ci; /* info on the file curretly writing */
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uLong begin_pos; /* position of the beginning of the zipfile */
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uLong add_position_when_writting_offset;
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uLong number_entry;
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#ifndef NO_ADDFILEINEXISTINGZIP
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char *globalcomment;
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#endif
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} zip_internal;
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#ifndef NOCRYPT
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#define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
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#include "crypt.h"
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#endif
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local linkedlist_datablock_internal* allocate_new_datablock()
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{
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linkedlist_datablock_internal* ldi;
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ldi = (linkedlist_datablock_internal*)
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ALLOC(sizeof(linkedlist_datablock_internal));
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if (ldi!=NULL)
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{
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ldi->next_datablock = NULL ;
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ldi->filled_in_this_block = 0 ;
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ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
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}
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return ldi;
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}
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local void free_datablock(ldi)
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linkedlist_datablock_internal* ldi;
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{
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while (ldi!=NULL)
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{
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linkedlist_datablock_internal* ldinext = ldi->next_datablock;
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TRYFREE(ldi);
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ldi = ldinext;
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}
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}
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local void init_linkedlist(ll)
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linkedlist_data* ll;
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{
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ll->first_block = ll->last_block = NULL;
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}
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local void free_linkedlist(ll)
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linkedlist_data* ll;
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{
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free_datablock(ll->first_block);
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ll->first_block = ll->last_block = NULL;
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}
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local int add_data_in_datablock(ll,buf,len)
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linkedlist_data* ll;
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const void* buf;
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uLong len;
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{
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linkedlist_datablock_internal* ldi;
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const unsigned char* from_copy;
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if (ll==NULL)
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return ZIP_INTERNALERROR;
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if (ll->last_block == NULL)
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{
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ll->first_block = ll->last_block = allocate_new_datablock();
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if (ll->first_block == NULL)
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return ZIP_INTERNALERROR;
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}
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ldi = ll->last_block;
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from_copy = (unsigned char*)buf;
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while (len>0)
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{
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uInt copy_this;
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uInt i;
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unsigned char* to_copy;
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if (ldi->avail_in_this_block==0)
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{
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ldi->next_datablock = allocate_new_datablock();
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if (ldi->next_datablock == NULL)
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return ZIP_INTERNALERROR;
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ldi = ldi->next_datablock ;
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ll->last_block = ldi;
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}
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if (ldi->avail_in_this_block < len)
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copy_this = (uInt)ldi->avail_in_this_block;
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else
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copy_this = (uInt)len;
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to_copy = &(ldi->data[ldi->filled_in_this_block]);
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for (i=0;i<copy_this;i++)
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*(to_copy+i)=*(from_copy+i);
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ldi->filled_in_this_block += copy_this;
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ldi->avail_in_this_block -= copy_this;
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from_copy += copy_this ;
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len -= copy_this;
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}
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return ZIP_OK;
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}
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/****************************************************************************/
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#ifndef NO_ADDFILEINEXISTINGZIP
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/* ===========================================================================
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Inputs a long in LSB order to the given file
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nbByte == 1, 2 or 4 (byte, short or long)
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*/
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local int ziplocal_putValue OF((const zlib_filefunc_def* pzlib_filefunc_def,
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voidpf filestream, uLong x, int nbByte));
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local int ziplocal_putValue (pzlib_filefunc_def, filestream, x, nbByte)
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const zlib_filefunc_def* pzlib_filefunc_def;
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voidpf filestream;
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uLong x;
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int nbByte;
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{
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unsigned char buf[4];
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int n;
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for (n = 0; n < nbByte; n++)
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{
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buf[n] = (unsigned char)(x & 0xff);
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x >>= 8;
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}
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if (x != 0)
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{ /* data overflow - hack for ZIP64 (X Roche) */
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for (n = 0; n < nbByte; n++)
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{
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buf[n] = 0xff;
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}
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}
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if (ZWRITE(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte)
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return ZIP_ERRNO;
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else
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return ZIP_OK;
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}
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local void ziplocal_putValue_inmemory OF((void* dest, uLong x, int nbByte));
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local void ziplocal_putValue_inmemory (dest, x, nbByte)
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void* dest;
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uLong x;
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int nbByte;
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{
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unsigned char* buf=(unsigned char*)dest;
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int n;
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for (n = 0; n < nbByte; n++) {
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buf[n] = (unsigned char)(x & 0xff);
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x >>= 8;
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}
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if (x != 0)
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{ /* data overflow - hack for ZIP64 */
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for (n = 0; n < nbByte; n++)
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{
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buf[n] = 0xff;
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}
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}
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}
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/****************************************************************************/
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local uLong ziplocal_TmzDateToDosDate(ptm,dosDate)
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const tm_zip* ptm;
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uLong dosDate;
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{
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uLong year = (uLong)ptm->tm_year;
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if (year>1980)
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year-=1980;
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else if (year>80)
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year-=80;
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return
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(uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) |
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((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
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}
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/****************************************************************************/
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local int ziplocal_getByte OF((
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const zlib_filefunc_def* pzlib_filefunc_def,
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voidpf filestream,
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int *pi));
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local int ziplocal_getByte(pzlib_filefunc_def,filestream,pi)
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const zlib_filefunc_def* pzlib_filefunc_def;
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voidpf filestream;
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int *pi;
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{
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unsigned char c;
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int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
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if (err==1)
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{
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*pi = (int)c;
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return ZIP_OK;
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}
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else
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{
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if (ZERROR(*pzlib_filefunc_def,filestream))
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return ZIP_ERRNO;
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else
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return ZIP_EOF;
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}
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}
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/* ===========================================================================
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Reads a long in LSB order from the given gz_stream. Sets
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*/
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local int ziplocal_getShort OF((
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const zlib_filefunc_def* pzlib_filefunc_def,
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voidpf filestream,
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uLong *pX));
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local int ziplocal_getShort (pzlib_filefunc_def,filestream,pX)
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const zlib_filefunc_def* pzlib_filefunc_def;
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voidpf filestream;
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uLong *pX;
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{
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uLong x ;
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int i;
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int err;
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err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
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x = (uLong)i;
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if (err==ZIP_OK)
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err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
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x += ((uLong)i)<<8;
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if (err==ZIP_OK)
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*pX = x;
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else
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*pX = 0;
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return err;
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}
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local int ziplocal_getLong OF((
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const zlib_filefunc_def* pzlib_filefunc_def,
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voidpf filestream,
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uLong *pX));
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local int ziplocal_getLong (pzlib_filefunc_def,filestream,pX)
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const zlib_filefunc_def* pzlib_filefunc_def;
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voidpf filestream;
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uLong *pX;
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{
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uLong x ;
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int i;
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int err;
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err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
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x = (uLong)i;
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if (err==ZIP_OK)
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err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
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x += ((uLong)i)<<8;
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if (err==ZIP_OK)
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err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
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x += ((uLong)i)<<16;
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if (err==ZIP_OK)
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err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
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x += ((uLong)i)<<24;
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if (err==ZIP_OK)
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*pX = x;
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else
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*pX = 0;
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return err;
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}
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#ifndef BUFREADCOMMENT
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#define BUFREADCOMMENT (0x400)
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#endif
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/*
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Locate the Central directory of a zipfile (at the end, just before
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the global comment)
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*/
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local uLong ziplocal_SearchCentralDir OF((
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const zlib_filefunc_def* pzlib_filefunc_def,
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voidpf filestream));
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local uLong ziplocal_SearchCentralDir(pzlib_filefunc_def,filestream)
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const zlib_filefunc_def* pzlib_filefunc_def;
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voidpf filestream;
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{
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unsigned char* buf;
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uLong uSizeFile;
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uLong uBackRead;
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uLong uMaxBack=0xffff; /* maximum size of global comment */
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uLong uPosFound=0;
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if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
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return 0;
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uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
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if (uMaxBack>uSizeFile)
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uMaxBack = uSizeFile;
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buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
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if (buf==NULL)
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return 0;
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uBackRead = 4;
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while (uBackRead<uMaxBack)
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{
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uLong uReadSize,uReadPos ;
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int i;
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if (uBackRead+BUFREADCOMMENT>uMaxBack)
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uBackRead = uMaxBack;
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else
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uBackRead+=BUFREADCOMMENT;
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uReadPos = uSizeFile-uBackRead ;
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uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
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(BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
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if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
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break;
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if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
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break;
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for (i=(int)uReadSize-3; (i--)>0;)
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if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
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((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
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{
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uPosFound = uReadPos+i;
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break;
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}
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if (uPosFound!=0)
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break;
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}
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TRYFREE(buf);
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return uPosFound;
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}
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#endif /* !NO_ADDFILEINEXISTINGZIP*/
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/************************************************************/
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extern zipFile ZEXPORT zipOpen2 (pathname, append, globalcomment, pzlib_filefunc_def)
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const char *pathname;
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int append;
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zipcharpc* globalcomment;
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zlib_filefunc_def* pzlib_filefunc_def;
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{
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zip_internal ziinit;
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zip_internal* zi;
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int err=ZIP_OK;
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if (pzlib_filefunc_def==NULL)
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fill_fopen_filefunc(&ziinit.z_filefunc);
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else
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ziinit.z_filefunc = *pzlib_filefunc_def;
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ziinit.filestream = (*(ziinit.z_filefunc.zopen_file))
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(ziinit.z_filefunc.opaque,
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pathname,
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(append == APPEND_STATUS_CREATE) ?
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(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
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(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
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if (ziinit.filestream == NULL)
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return NULL;
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ziinit.begin_pos = ZTELL(ziinit.z_filefunc,ziinit.filestream);
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ziinit.in_opened_file_inzip = 0;
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ziinit.ci.stream_initialised = 0;
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ziinit.number_entry = 0;
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ziinit.add_position_when_writting_offset = 0;
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init_linkedlist(&(ziinit.central_dir));
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zi = (zip_internal*)ALLOC(sizeof(zip_internal));
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if (zi==NULL)
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{
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ZCLOSE(ziinit.z_filefunc,ziinit.filestream);
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return NULL;
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}
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/* now we add file in a zipfile */
|
|
# ifndef NO_ADDFILEINEXISTINGZIP
|
|
ziinit.globalcomment = NULL;
|
|
if (append == APPEND_STATUS_ADDINZIP)
|
|
{
|
|
uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
|
|
|
|
uLong size_central_dir; /* size of the central directory */
|
|
uLong offset_central_dir; /* offset of start of central directory */
|
|
uLong central_pos,uL;
|
|
|
|
uLong number_disk; /* number of the current dist, used for
|
|
spaning ZIP, unsupported, always 0*/
|
|
uLong number_disk_with_CD; /* number the the disk with central dir, used
|
|
for spaning ZIP, unsupported, always 0*/
|
|
uLong number_entry;
|
|
uLong number_entry_CD; /* total number of entries in
|
|
the central dir
|
|
(same than number_entry on nospan) */
|
|
uLong size_comment;
|
|
|
|
central_pos = ziplocal_SearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
|
|
if (central_pos==0)
|
|
err=ZIP_ERRNO;
|
|
|
|
if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
|
|
central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* the signature, already checked */
|
|
if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&uL)!=ZIP_OK)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* number of this disk */
|
|
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk)!=ZIP_OK)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* number of the disk with the start of the central directory */
|
|
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk_with_CD)!=ZIP_OK)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* total number of entries in the central dir on this disk */
|
|
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry)!=ZIP_OK)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* total number of entries in the central dir */
|
|
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.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 (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&size_central_dir)!=ZIP_OK)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* offset of start of central directory with respect to the
|
|
starting disk number */
|
|
if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&offset_central_dir)!=ZIP_OK)
|
|
err=ZIP_ERRNO;
|
|
|
|
/* zipfile global comment length */
|
|
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.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)
|
|
{
|
|
ZCLOSE(ziinit.z_filefunc, ziinit.filestream);
|
|
return NULL;
|
|
}
|
|
|
|
if (size_comment>0)
|
|
{
|
|
ziinit.globalcomment = ALLOC(size_comment+1);
|
|
if (ziinit.globalcomment)
|
|
{
|
|
size_comment = ZREAD(ziinit.z_filefunc, ziinit.filestream,ziinit.globalcomment,size_comment);
|
|
ziinit.globalcomment[size_comment]=0;
|
|
}
|
|
}
|
|
|
|
byte_before_the_zipfile = central_pos -
|
|
(offset_central_dir+size_central_dir);
|
|
ziinit.add_position_when_writting_offset = byte_before_the_zipfile;
|
|
|
|
{
|
|
uLong size_central_dir_to_read = size_central_dir;
|
|
size_t buf_size = SIZEDATA_INDATABLOCK;
|
|
void* buf_read = (void*)ALLOC(buf_size);
|
|
if (ZSEEK(ziinit.z_filefunc, ziinit.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))
|
|
{
|
|
uLong read_this = SIZEDATA_INDATABLOCK;
|
|
if (read_this > size_central_dir_to_read)
|
|
read_this = size_central_dir_to_read;
|
|
if (ZREAD(ziinit.z_filefunc, ziinit.filestream,buf_read,read_this) != read_this)
|
|
err=ZIP_ERRNO;
|
|
|
|
if (err==ZIP_OK)
|
|
err = add_data_in_datablock(&ziinit.central_dir,buf_read,
|
|
(uLong)read_this);
|
|
size_central_dir_to_read-=read_this;
|
|
}
|
|
TRYFREE(buf_read);
|
|
}
|
|
ziinit.begin_pos = byte_before_the_zipfile;
|
|
ziinit.number_entry = number_entry_CD;
|
|
|
|
if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
|
|
offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
err=ZIP_ERRNO;
|
|
}
|
|
|
|
if (globalcomment)
|
|
{
|
|
*globalcomment = ziinit.globalcomment;
|
|
}
|
|
# endif /* !NO_ADDFILEINEXISTINGZIP*/
|
|
|
|
if (err != ZIP_OK)
|
|
{
|
|
# ifndef NO_ADDFILEINEXISTINGZIP
|
|
TRYFREE(ziinit.globalcomment);
|
|
# endif /* !NO_ADDFILEINEXISTINGZIP*/
|
|
TRYFREE(zi);
|
|
return NULL;
|
|
}
|
|
else
|
|
{
|
|
*zi = ziinit;
|
|
return (zipFile)zi;
|
|
}
|
|
}
|
|
|
|
extern zipFile ZEXPORT zipOpen (pathname, append)
|
|
const char *pathname;
|
|
int append;
|
|
{
|
|
return zipOpen2(pathname,append,NULL,NULL);
|
|
}
|
|
|
|
extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,
|
|
extrafield_local, size_extrafield_local,
|
|
extrafield_global, size_extrafield_global,
|
|
comment, method, level, raw,
|
|
windowBits, memLevel, strategy,
|
|
password, crcForCrypting)
|
|
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;
|
|
{
|
|
zip_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;
|
|
if ((method!=0) && (method!=Z_DEFLATED))
|
|
return ZIP_PARAMERROR;
|
|
|
|
zi = (zip_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 = ziplocal_TmzDateToDosDate(&zipfi->tmz_date,zipfi->dosDate);
|
|
}
|
|
|
|
zi->ci.flag = 0;
|
|
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 = ZTELL(zi->z_filefunc,zi->filestream) ;
|
|
zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename +
|
|
size_extrafield_global + size_comment;
|
|
zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader);
|
|
|
|
ziplocal_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
|
|
/* version info */
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+4,(uLong)VERSIONMADEBY,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
|
|
|
|
if (zipfi==NULL)
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
|
|
else
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
|
|
|
|
if (zipfi==NULL)
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
|
|
else
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
|
|
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header- zi->add_position_when_writting_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;
|
|
|
|
/* write the local header */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC,4);
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield_local,2);
|
|
|
|
if ((err==ZIP_OK) && (size_filename>0))
|
|
if (ZWRITE(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
|
|
err = ZIP_ERRNO;
|
|
|
|
if ((err==ZIP_OK) && (size_extrafield_local>0))
|
|
if (ZWRITE(zi->z_filefunc,zi->filestream,extrafield_local,size_extrafield_local)
|
|
!=size_extrafield_local)
|
|
err = ZIP_ERRNO;
|
|
|
|
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;
|
|
|
|
if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
|
|
{
|
|
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 = 1;
|
|
}
|
|
# 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 (ZWRITE(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 zipOpenNewFileInZip2(file, filename, zipfi,
|
|
extrafield_local, size_extrafield_local,
|
|
extrafield_global, size_extrafield_global,
|
|
comment, method, level, raw)
|
|
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 zipOpenNewFileInZip3 (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);
|
|
}
|
|
|
|
extern int ZEXPORT zipOpenNewFileInZip (file, filename, zipfi,
|
|
extrafield_local, size_extrafield_local,
|
|
extrafield_global, size_extrafield_global,
|
|
comment, method, level)
|
|
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 zipOpenNewFileInZip2 (file, filename, zipfi,
|
|
extrafield_local, size_extrafield_local,
|
|
extrafield_global, size_extrafield_global,
|
|
comment, method, level, 0);
|
|
}
|
|
|
|
local int zipFlushWriteBuffer(zi)
|
|
zip_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 (ZWRITE(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.pos_in_buffered_data = 0;
|
|
return err;
|
|
}
|
|
|
|
extern int ZEXPORT zipWriteInFileInZip (file, buf, len)
|
|
zipFile file;
|
|
const void* buf;
|
|
unsigned len;
|
|
{
|
|
zip_internal* zi;
|
|
int err=ZIP_OK;
|
|
|
|
if (file == NULL)
|
|
return ZIP_PARAMERROR;
|
|
zi = (zip_internal*)file;
|
|
|
|
if (zi->in_opened_file_inzip == 0)
|
|
return ZIP_PARAMERROR;
|
|
|
|
zi->ci.stream.next_in = (void*)buf;
|
|
zi->ci.stream.avail_in = len;
|
|
zi->ci.crc32 = crc32(zi->ci.crc32,buf,len);
|
|
|
|
while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
|
|
{
|
|
if (zi->ci.stream.avail_out == 0)
|
|
{
|
|
if (zipFlushWriteBuffer(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;
|
|
}
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
extern int ZEXPORT zipCloseFileInZipRaw (file, uncompressed_size, crc32)
|
|
zipFile file;
|
|
uLong uncompressed_size;
|
|
uLong crc32;
|
|
{
|
|
zip_internal* zi;
|
|
uLong compressed_size;
|
|
int err=ZIP_OK;
|
|
|
|
if (file == NULL)
|
|
return ZIP_PARAMERROR;
|
|
zi = (zip_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 (zipFlushWriteBuffer(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) ;
|
|
}
|
|
|
|
if (err==Z_STREAM_END)
|
|
err=ZIP_OK; /* this is normal */
|
|
|
|
if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
|
|
if (zipFlushWriteBuffer(zi)==ZIP_ERRNO)
|
|
err = ZIP_ERRNO;
|
|
|
|
if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
|
|
{
|
|
err=deflateEnd(&zi->ci.stream);
|
|
zi->ci.stream_initialised = 0;
|
|
}
|
|
|
|
if (!zi->ci.raw)
|
|
{
|
|
crc32 = (uLong)zi->ci.crc32;
|
|
uncompressed_size = (uLong)zi->ci.stream.total_in;
|
|
}
|
|
compressed_size = (uLong)zi->ci.stream.total_out;
|
|
# ifndef NOCRYPT
|
|
compressed_size += zi->ci.crypt_header_size;
|
|
# endif
|
|
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+20,
|
|
compressed_size,4); /*compr size*/
|
|
if (zi->ci.stream.data_type == Z_ASCII)
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
|
|
ziplocal_putValue_inmemory(zi->ci.central_header+24,
|
|
uncompressed_size,4); /*uncompr size*/
|
|
|
|
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)
|
|
{
|
|
long cur_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
|
|
if (ZSEEK(zi->z_filefunc,zi->filestream,
|
|
zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
|
|
err = ZIP_ERRNO;
|
|
|
|
if (err==ZIP_OK)
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
|
|
|
|
if (err==ZIP_OK) /* compressed size, unknown */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
|
|
|
|
if (err==ZIP_OK) /* uncompressed size, unknown */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
|
|
|
|
if (ZSEEK(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 (file)
|
|
zipFile file;
|
|
{
|
|
return zipCloseFileInZipRaw (file,0,0);
|
|
}
|
|
|
|
extern int ZEXPORT zipClose (file, global_comment)
|
|
zipFile file;
|
|
const char* global_comment;
|
|
{
|
|
zip_internal* zi;
|
|
int err = 0;
|
|
uLong size_centraldir = 0;
|
|
uLong centraldir_pos_inzip;
|
|
uInt size_global_comment;
|
|
if (file == NULL)
|
|
return ZIP_PARAMERROR;
|
|
zi = (zip_internal*)file;
|
|
|
|
if (zi->in_opened_file_inzip == 1)
|
|
{
|
|
err = zipCloseFileInZip (file);
|
|
}
|
|
|
|
#ifndef NO_ADDFILEINEXISTINGZIP
|
|
if (global_comment==NULL)
|
|
global_comment = zi->globalcomment;
|
|
#endif
|
|
if (global_comment==NULL)
|
|
size_global_comment = 0;
|
|
else
|
|
size_global_comment = (uInt)strlen(global_comment);
|
|
|
|
centraldir_pos_inzip = ZTELL(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 (ZWRITE(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_datablock(zi->central_dir.first_block);
|
|
|
|
if (err==ZIP_OK) /* Magic End */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
|
|
|
|
if (err==ZIP_OK) /* number of this disk */
|
|
err = ziplocal_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 = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
|
|
|
|
if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
|
|
|
|
if (err==ZIP_OK) /* total number of entries in the central dir */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
|
|
|
|
if (err==ZIP_OK) /* size of the central directory */
|
|
err = ziplocal_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 */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,
|
|
(uLong)(centraldir_pos_inzip - zi->add_position_when_writting_offset),4);
|
|
|
|
if (err==ZIP_OK) /* zipfile comment length */
|
|
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
|
|
|
|
if ((err==ZIP_OK) && (size_global_comment>0))
|
|
if (ZWRITE(zi->z_filefunc,zi->filestream,
|
|
global_comment,size_global_comment) != size_global_comment)
|
|
err = ZIP_ERRNO;
|
|
|
|
if (ZCLOSE(zi->z_filefunc,zi->filestream) != 0)
|
|
if (err == ZIP_OK)
|
|
err = ZIP_ERRNO;
|
|
|
|
#ifndef NO_ADDFILEINEXISTINGZIP
|
|
TRYFREE(zi->globalcomment);
|
|
#endif
|
|
TRYFREE(zi);
|
|
|
|
return err;
|
|
}
|