1 /* zip.c -- IO on .zip files using zlib
2 Version 1.01e, February 12th, 2005
4 27 Dec 2004 Rolf Kalbermatter
5 Modification to zipOpen2 to support globalComment retrieval.
7 Copyright (C) 1998-2005 Gilles Vollant
9 Read zip.h for more info
35 /* compile with -Dlocal if your debugger can't find static symbols */
38 # define VERSIONMADEBY (0x0) /* platform depedent */
42 #define Z_BUFSIZE (16384)
45 #ifndef Z_MAXFILENAMEINZIP
46 #define Z_MAXFILENAMEINZIP (256)
50 # define ALLOC(size) (malloc(size))
53 # define TRYFREE(p) {if (p) free(p);}
57 #define SIZECENTRALDIRITEM (0x2e)
58 #define SIZEZIPLOCALHEADER (0x1e)
61 /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
76 #if MAX_MEM_LEVEL >= 8
77 # define DEF_MEM_LEVEL 8
79 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
82 const char zip_copyright[] =
83 " zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
86 #define SIZEDATA_INDATABLOCK (4096-(4*4))
88 #define LOCALHEADERMAGIC (0x04034b50)
89 #define CENTRALHEADERMAGIC (0x02014b50)
90 #define ENDHEADERMAGIC (0x06054b50)
92 #define FLAG_LOCALHEADER_OFFSET (0x06)
93 #define CRC_LOCALHEADER_OFFSET (0x0e)
95 #define SIZECENTRALHEADER (0x2e) /* 46 */
97 typedef struct linkedlist_datablock_internal_s
99 struct linkedlist_datablock_internal_s* next_datablock;
100 uLong avail_in_this_block;
101 uLong filled_in_this_block;
102 uLong unused; /* for future use and alignement */
103 unsigned char data[SIZEDATA_INDATABLOCK];
104 } linkedlist_datablock_internal;
106 typedef struct linkedlist_data_s
108 linkedlist_datablock_internal* first_block;
109 linkedlist_datablock_internal* last_block;
115 z_stream stream; /* zLib stream structure for inflate */
116 int stream_initialised; /* 1 is stream is initialised */
117 uInt pos_in_buffered_data; /* last written byte in buffered_data */
119 uLong pos_local_header; /* offset of the local header of the file
121 char* central_header; /* central header data for the current file */
122 uLong size_centralheader; /* size of the central header for cur file */
123 uLong flag; /* flag of the file currently writing */
125 int method; /* compression method of file currenty wr.*/
126 int raw; /* 1 for directly writing raw data */
127 Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
132 unsigned long keys[3]; /* keys defining the pseudo-random sequence */
133 const unsigned long* pcrc_32_tab;
134 int crypt_header_size;
140 zlib_filefunc_def z_filefunc;
141 voidpf filestream; /* io structore of the zipfile */
142 linkedlist_data central_dir;/* datablock with central dir in construction*/
143 int in_opened_file_inzip; /* 1 if a file in the zip is currently writ.*/
144 curfile_info ci; /* info on the file curretly writing */
146 uLong begin_pos; /* position of the beginning of the zipfile */
147 uLong add_position_when_writting_offset;
149 #ifndef NO_ADDFILEINEXISTINGZIP
157 #define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
161 local linkedlist_datablock_internal* allocate_new_datablock()
163 linkedlist_datablock_internal* ldi;
164 ldi = (linkedlist_datablock_internal*)
165 ALLOC(sizeof(linkedlist_datablock_internal));
168 ldi->next_datablock = NULL ;
169 ldi->filled_in_this_block = 0 ;
170 ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
175 local void free_datablock(ldi)
176 linkedlist_datablock_internal* ldi;
180 linkedlist_datablock_internal* ldinext = ldi->next_datablock;
186 local void init_linkedlist(ll)
189 ll->first_block = ll->last_block = NULL;
192 local void free_linkedlist(ll)
195 free_datablock(ll->first_block);
196 ll->first_block = ll->last_block = NULL;
200 local int add_data_in_datablock(ll,buf,len)
205 linkedlist_datablock_internal* ldi;
206 const unsigned char* from_copy;
209 return ZIP_INTERNALERROR;
211 if (ll->last_block == NULL)
213 ll->first_block = ll->last_block = allocate_new_datablock();
214 if (ll->first_block == NULL)
215 return ZIP_INTERNALERROR;
218 ldi = ll->last_block;
219 from_copy = (unsigned char*)buf;
225 unsigned char* to_copy;
227 if (ldi->avail_in_this_block==0)
229 ldi->next_datablock = allocate_new_datablock();
230 if (ldi->next_datablock == NULL)
231 return ZIP_INTERNALERROR;
232 ldi = ldi->next_datablock ;
233 ll->last_block = ldi;
236 if (ldi->avail_in_this_block < len)
237 copy_this = (uInt)ldi->avail_in_this_block;
239 copy_this = (uInt)len;
241 to_copy = &(ldi->data[ldi->filled_in_this_block]);
243 for (i=0;i<copy_this;i++)
244 *(to_copy+i)=*(from_copy+i);
246 ldi->filled_in_this_block += copy_this;
247 ldi->avail_in_this_block -= copy_this;
248 from_copy += copy_this ;
256 /****************************************************************************/
258 #ifndef NO_ADDFILEINEXISTINGZIP
259 /* ===========================================================================
260 Inputs a long in LSB order to the given file
261 nbByte == 1, 2 or 4 (byte, short or long)
264 local int ziplocal_putValue OF((const zlib_filefunc_def* pzlib_filefunc_def,
265 voidpf filestream, uLong x, int nbByte));
266 local int ziplocal_putValue (pzlib_filefunc_def, filestream, x, nbByte)
267 const zlib_filefunc_def* pzlib_filefunc_def;
272 unsigned char buf[4];
274 for (n = 0; n < nbByte; n++)
276 buf[n] = (unsigned char)(x & 0xff);
280 { /* data overflow - hack for ZIP64 (X Roche) */
281 for (n = 0; n < nbByte; n++)
287 if (ZWRITE(*pzlib_filefunc_def,filestream,buf,nbByte)!=(uLong)nbByte)
293 local void ziplocal_putValue_inmemory OF((void* dest, uLong x, int nbByte));
294 local void ziplocal_putValue_inmemory (dest, x, nbByte)
299 unsigned char* buf=(unsigned char*)dest;
301 for (n = 0; n < nbByte; n++) {
302 buf[n] = (unsigned char)(x & 0xff);
307 { /* data overflow - hack for ZIP64 */
308 for (n = 0; n < nbByte; n++)
315 /****************************************************************************/
318 local uLong ziplocal_TmzDateToDosDate(ptm,dosDate)
322 uLong year = (uLong)ptm->tm_year;
328 (uLong) (((ptm->tm_mday) + (32 * (ptm->tm_mon+1)) + (512 * year)) << 16) |
329 ((ptm->tm_sec/2) + (32* ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
333 /****************************************************************************/
335 local int ziplocal_getByte OF((
336 const zlib_filefunc_def* pzlib_filefunc_def,
340 local int ziplocal_getByte(pzlib_filefunc_def,filestream,pi)
341 const zlib_filefunc_def* pzlib_filefunc_def;
346 int err = (int)ZREAD(*pzlib_filefunc_def,filestream,&c,1);
354 if (ZERROR(*pzlib_filefunc_def,filestream))
362 /* ===========================================================================
363 Reads a long in LSB order from the given gz_stream. Sets
365 local int ziplocal_getShort OF((
366 const zlib_filefunc_def* pzlib_filefunc_def,
370 local int ziplocal_getShort (pzlib_filefunc_def,filestream,pX)
371 const zlib_filefunc_def* pzlib_filefunc_def;
379 err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
383 err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
393 local int ziplocal_getLong OF((
394 const zlib_filefunc_def* pzlib_filefunc_def,
398 local int ziplocal_getLong (pzlib_filefunc_def,filestream,pX)
399 const zlib_filefunc_def* pzlib_filefunc_def;
407 err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
411 err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
415 err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
419 err = ziplocal_getByte(pzlib_filefunc_def,filestream,&i);
429 #ifndef BUFREADCOMMENT
430 #define BUFREADCOMMENT (0x400)
433 Locate the Central directory of a zipfile (at the end, just before
436 local uLong ziplocal_SearchCentralDir OF((
437 const zlib_filefunc_def* pzlib_filefunc_def,
440 local uLong ziplocal_SearchCentralDir(pzlib_filefunc_def,filestream)
441 const zlib_filefunc_def* pzlib_filefunc_def;
447 uLong uMaxBack=0xffff; /* maximum size of global comment */
450 if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
454 uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
456 if (uMaxBack>uSizeFile)
457 uMaxBack = uSizeFile;
459 buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
464 while (uBackRead<uMaxBack)
466 uLong uReadSize,uReadPos ;
468 if (uBackRead+BUFREADCOMMENT>uMaxBack)
469 uBackRead = uMaxBack;
471 uBackRead+=BUFREADCOMMENT;
472 uReadPos = uSizeFile-uBackRead ;
474 uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
475 (BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
476 if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
479 if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
482 for (i=(int)uReadSize-3; (i--)>0;)
483 if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
484 ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
486 uPosFound = uReadPos+i;
496 #endif /* !NO_ADDFILEINEXISTINGZIP*/
498 /************************************************************/
499 extern zipFile ZEXPORT zipOpen2 (pathname, append, globalcomment, pzlib_filefunc_def)
500 const char *pathname;
502 zipcharpc* globalcomment;
503 zlib_filefunc_def* pzlib_filefunc_def;
510 if (pzlib_filefunc_def==NULL)
511 fill_fopen_filefunc(&ziinit.z_filefunc);
513 ziinit.z_filefunc = *pzlib_filefunc_def;
515 ziinit.filestream = (*(ziinit.z_filefunc.zopen_file))
516 (ziinit.z_filefunc.opaque,
518 (append == APPEND_STATUS_CREATE) ?
519 (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
520 (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
522 if (ziinit.filestream == NULL)
524 ziinit.begin_pos = ZTELL(ziinit.z_filefunc,ziinit.filestream);
525 ziinit.in_opened_file_inzip = 0;
526 ziinit.ci.stream_initialised = 0;
527 ziinit.number_entry = 0;
528 ziinit.add_position_when_writting_offset = 0;
529 init_linkedlist(&(ziinit.central_dir));
532 zi = (zip_internal*)ALLOC(sizeof(zip_internal));
535 ZCLOSE(ziinit.z_filefunc,ziinit.filestream);
539 /* now we add file in a zipfile */
540 # ifndef NO_ADDFILEINEXISTINGZIP
541 ziinit.globalcomment = NULL;
542 if (append == APPEND_STATUS_ADDINZIP)
544 uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
546 uLong size_central_dir; /* size of the central directory */
547 uLong offset_central_dir; /* offset of start of central directory */
548 uLong central_pos,uL;
550 uLong number_disk; /* number of the current dist, used for
551 spaning ZIP, unsupported, always 0*/
552 uLong number_disk_with_CD; /* number the the disk with central dir, used
553 for spaning ZIP, unsupported, always 0*/
555 uLong number_entry_CD; /* total number of entries in
557 (same than number_entry on nospan) */
560 central_pos = ziplocal_SearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
564 if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
565 central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
568 /* the signature, already checked */
569 if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&uL)!=ZIP_OK)
572 /* number of this disk */
573 if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk)!=ZIP_OK)
576 /* number of the disk with the start of the central directory */
577 if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk_with_CD)!=ZIP_OK)
580 /* total number of entries in the central dir on this disk */
581 if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry)!=ZIP_OK)
584 /* total number of entries in the central dir */
585 if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry_CD)!=ZIP_OK)
588 if ((number_entry_CD!=number_entry) ||
589 (number_disk_with_CD!=0) ||
593 /* size of the central directory */
594 if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&size_central_dir)!=ZIP_OK)
597 /* offset of start of central directory with respect to the
598 starting disk number */
599 if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&offset_central_dir)!=ZIP_OK)
602 /* zipfile global comment length */
603 if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&size_comment)!=ZIP_OK)
606 if ((central_pos<offset_central_dir+size_central_dir) &&
612 ZCLOSE(ziinit.z_filefunc, ziinit.filestream);
618 ziinit.globalcomment = ALLOC(size_comment+1);
619 if (ziinit.globalcomment)
621 size_comment = ZREAD(ziinit.z_filefunc, ziinit.filestream,ziinit.globalcomment,size_comment);
622 ziinit.globalcomment[size_comment]=0;
626 byte_before_the_zipfile = central_pos -
627 (offset_central_dir+size_central_dir);
628 ziinit.add_position_when_writting_offset = byte_before_the_zipfile;
631 uLong size_central_dir_to_read = size_central_dir;
632 size_t buf_size = SIZEDATA_INDATABLOCK;
633 void* buf_read = (void*)ALLOC(buf_size);
634 if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
635 offset_central_dir + byte_before_the_zipfile,
636 ZLIB_FILEFUNC_SEEK_SET) != 0)
639 while ((size_central_dir_to_read>0) && (err==ZIP_OK))
641 uLong read_this = SIZEDATA_INDATABLOCK;
642 if (read_this > size_central_dir_to_read)
643 read_this = size_central_dir_to_read;
644 if (ZREAD(ziinit.z_filefunc, ziinit.filestream,buf_read,read_this) != read_this)
648 err = add_data_in_datablock(&ziinit.central_dir,buf_read,
650 size_central_dir_to_read-=read_this;
654 ziinit.begin_pos = byte_before_the_zipfile;
655 ziinit.number_entry = number_entry_CD;
657 if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
658 offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
664 *globalcomment = ziinit.globalcomment;
666 # endif /* !NO_ADDFILEINEXISTINGZIP*/
670 # ifndef NO_ADDFILEINEXISTINGZIP
671 TRYFREE(ziinit.globalcomment);
672 # endif /* !NO_ADDFILEINEXISTINGZIP*/
683 extern zipFile ZEXPORT zipOpen (pathname, append)
684 const char *pathname;
687 return zipOpen2(pathname,append,NULL,NULL);
690 extern int ZEXPORT zipOpenNewFileInZip3 (file, filename, zipfi,
691 extrafield_local, size_extrafield_local,
692 extrafield_global, size_extrafield_global,
693 comment, method, level, raw,
694 windowBits, memLevel, strategy,
695 password, crcForCrypting)
697 const char* filename;
698 const zip_fileinfo* zipfi;
699 const void* extrafield_local;
700 uInt size_extrafield_local;
701 const void* extrafield_global;
702 uInt size_extrafield_global;
710 const char* password;
711 uLong crcForCrypting;
720 if (password != NULL)
721 return ZIP_PARAMERROR;
725 return ZIP_PARAMERROR;
726 if ((method!=0) && (method!=Z_DEFLATED))
727 return ZIP_PARAMERROR;
729 zi = (zip_internal*)file;
731 if (zi->in_opened_file_inzip == 1)
733 err = zipCloseFileInZip (file);
745 size_comment = (uInt)strlen(comment);
747 size_filename = (uInt)strlen(filename);
753 if (zipfi->dosDate != 0)
754 zi->ci.dosDate = zipfi->dosDate;
755 else zi->ci.dosDate = ziplocal_TmzDateToDosDate(&zipfi->tmz_date,zipfi->dosDate);
759 if ((level==8) || (level==9))
765 if (password != NULL)
769 zi->ci.method = method;
771 zi->ci.stream_initialised = 0;
772 zi->ci.pos_in_buffered_data = 0;
774 zi->ci.pos_local_header = ZTELL(zi->z_filefunc,zi->filestream) ;
775 zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename +
776 size_extrafield_global + size_comment;
777 zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader);
779 ziplocal_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
781 ziplocal_putValue_inmemory(zi->ci.central_header+4,(uLong)VERSIONMADEBY,2);
782 ziplocal_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
783 ziplocal_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
784 ziplocal_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
785 ziplocal_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
786 ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
787 ziplocal_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
788 ziplocal_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
789 ziplocal_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
790 ziplocal_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
791 ziplocal_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
792 ziplocal_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
795 ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
797 ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
800 ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
802 ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
804 ziplocal_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header- zi->add_position_when_writting_offset,4);
806 for (i=0;i<size_filename;i++)
807 *(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);
809 for (i=0;i<size_extrafield_global;i++)
810 *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
811 *(((const char*)extrafield_global)+i);
813 for (i=0;i<size_comment;i++)
814 *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
815 size_extrafield_global+i) = *(comment+i);
816 if (zi->ci.central_header == NULL)
817 return ZIP_INTERNALERROR;
819 /* write the local header */
820 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC,4);
823 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
825 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
828 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
831 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
834 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
836 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
838 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
841 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
844 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield_local,2);
846 if ((err==ZIP_OK) && (size_filename>0))
847 if (ZWRITE(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
850 if ((err==ZIP_OK) && (size_extrafield_local>0))
851 if (ZWRITE(zi->z_filefunc,zi->filestream,extrafield_local,size_extrafield_local)
852 !=size_extrafield_local)
855 zi->ci.stream.avail_in = (uInt)0;
856 zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
857 zi->ci.stream.next_out = zi->ci.buffered_data;
858 zi->ci.stream.total_in = 0;
859 zi->ci.stream.total_out = 0;
861 if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
863 zi->ci.stream.zalloc = (alloc_func)0;
864 zi->ci.stream.zfree = (free_func)0;
865 zi->ci.stream.opaque = (voidpf)0;
868 windowBits = -windowBits;
870 err = deflateInit2(&zi->ci.stream, level,
871 Z_DEFLATED, windowBits, memLevel, strategy);
874 zi->ci.stream_initialised = 1;
877 zi->ci.crypt_header_size = 0;
878 if ((err==Z_OK) && (password != NULL))
880 unsigned char bufHead[RAND_HEAD_LEN];
881 unsigned int sizeHead;
883 zi->ci.pcrc_32_tab = get_crc_table();
884 /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
886 sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
887 zi->ci.crypt_header_size = sizeHead;
889 if (ZWRITE(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
895 zi->in_opened_file_inzip = 1;
899 extern int ZEXPORT zipOpenNewFileInZip2(file, filename, zipfi,
900 extrafield_local, size_extrafield_local,
901 extrafield_global, size_extrafield_global,
902 comment, method, level, raw)
904 const char* filename;
905 const zip_fileinfo* zipfi;
906 const void* extrafield_local;
907 uInt size_extrafield_local;
908 const void* extrafield_global;
909 uInt size_extrafield_global;
915 return zipOpenNewFileInZip3 (file, filename, zipfi,
916 extrafield_local, size_extrafield_local,
917 extrafield_global, size_extrafield_global,
918 comment, method, level, raw,
919 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
923 extern int ZEXPORT zipOpenNewFileInZip (file, filename, zipfi,
924 extrafield_local, size_extrafield_local,
925 extrafield_global, size_extrafield_global,
926 comment, method, level)
928 const char* filename;
929 const zip_fileinfo* zipfi;
930 const void* extrafield_local;
931 uInt size_extrafield_local;
932 const void* extrafield_global;
933 uInt size_extrafield_global;
938 return zipOpenNewFileInZip2 (file, filename, zipfi,
939 extrafield_local, size_extrafield_local,
940 extrafield_global, size_extrafield_global,
941 comment, method, level, 0);
944 local int zipFlushWriteBuffer(zi)
949 if (zi->ci.encrypt != 0)
954 for (i=0;i<zi->ci.pos_in_buffered_data;i++)
955 zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab,
956 zi->ci.buffered_data[i],t);
959 if (ZWRITE(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data)
960 !=zi->ci.pos_in_buffered_data)
962 zi->ci.pos_in_buffered_data = 0;
966 extern int ZEXPORT zipWriteInFileInZip (file, buf, len)
975 return ZIP_PARAMERROR;
976 zi = (zip_internal*)file;
978 if (zi->in_opened_file_inzip == 0)
979 return ZIP_PARAMERROR;
981 zi->ci.stream.next_in = (void*)buf;
982 zi->ci.stream.avail_in = len;
983 zi->ci.crc32 = crc32(zi->ci.crc32,buf,len);
985 while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
987 if (zi->ci.stream.avail_out == 0)
989 if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
991 zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
992 zi->ci.stream.next_out = zi->ci.buffered_data;
999 if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
1001 uLong uTotalOutBefore = zi->ci.stream.total_out;
1002 err=deflate(&zi->ci.stream, Z_NO_FLUSH);
1003 zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
1009 if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
1010 copy_this = zi->ci.stream.avail_in;
1012 copy_this = zi->ci.stream.avail_out;
1013 for (i=0;i<copy_this;i++)
1014 *(((char*)zi->ci.stream.next_out)+i) =
1015 *(((const char*)zi->ci.stream.next_in)+i);
1017 zi->ci.stream.avail_in -= copy_this;
1018 zi->ci.stream.avail_out-= copy_this;
1019 zi->ci.stream.next_in+= copy_this;
1020 zi->ci.stream.next_out+= copy_this;
1021 zi->ci.stream.total_in+= copy_this;
1022 zi->ci.stream.total_out+= copy_this;
1023 zi->ci.pos_in_buffered_data += copy_this;
1031 extern int ZEXPORT zipCloseFileInZipRaw (file, uncompressed_size, crc32)
1033 uLong uncompressed_size;
1037 uLong compressed_size;
1041 return ZIP_PARAMERROR;
1042 zi = (zip_internal*)file;
1044 if (zi->in_opened_file_inzip == 0)
1045 return ZIP_PARAMERROR;
1046 zi->ci.stream.avail_in = 0;
1048 if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
1051 uLong uTotalOutBefore;
1052 if (zi->ci.stream.avail_out == 0)
1054 if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
1056 zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
1057 zi->ci.stream.next_out = zi->ci.buffered_data;
1059 uTotalOutBefore = zi->ci.stream.total_out;
1060 err=deflate(&zi->ci.stream, Z_FINISH);
1061 zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
1064 if (err==Z_STREAM_END)
1065 err=ZIP_OK; /* this is normal */
1067 if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
1068 if (zipFlushWriteBuffer(zi)==ZIP_ERRNO)
1071 if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
1073 err=deflateEnd(&zi->ci.stream);
1074 zi->ci.stream_initialised = 0;
1079 crc32 = (uLong)zi->ci.crc32;
1080 uncompressed_size = (uLong)zi->ci.stream.total_in;
1082 compressed_size = (uLong)zi->ci.stream.total_out;
1084 compressed_size += zi->ci.crypt_header_size;
1087 ziplocal_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
1088 ziplocal_putValue_inmemory(zi->ci.central_header+20,
1089 compressed_size,4); /*compr size*/
1090 if (zi->ci.stream.data_type == Z_ASCII)
1091 ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
1092 ziplocal_putValue_inmemory(zi->ci.central_header+24,
1093 uncompressed_size,4); /*uncompr size*/
1096 err = add_data_in_datablock(&zi->central_dir,zi->ci.central_header,
1097 (uLong)zi->ci.size_centralheader);
1098 free(zi->ci.central_header);
1102 long cur_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
1103 if (ZSEEK(zi->z_filefunc,zi->filestream,
1104 zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
1108 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
1110 if (err==ZIP_OK) /* compressed size, unknown */
1111 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
1113 if (err==ZIP_OK) /* uncompressed size, unknown */
1114 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
1116 if (ZSEEK(zi->z_filefunc,zi->filestream,
1117 cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
1121 zi->number_entry ++;
1122 zi->in_opened_file_inzip = 0;
1127 extern int ZEXPORT zipCloseFileInZip (file)
1130 return zipCloseFileInZipRaw (file,0,0);
1133 extern int ZEXPORT zipClose (file, global_comment)
1135 const char* global_comment;
1139 uLong size_centraldir = 0;
1140 uLong centraldir_pos_inzip;
1141 uInt size_global_comment;
1143 return ZIP_PARAMERROR;
1144 zi = (zip_internal*)file;
1146 if (zi->in_opened_file_inzip == 1)
1148 err = zipCloseFileInZip (file);
1151 #ifndef NO_ADDFILEINEXISTINGZIP
1152 if (global_comment==NULL)
1153 global_comment = zi->globalcomment;
1155 if (global_comment==NULL)
1156 size_global_comment = 0;
1158 size_global_comment = (uInt)strlen(global_comment);
1160 centraldir_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
1163 linkedlist_datablock_internal* ldi = zi->central_dir.first_block ;
1166 if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
1167 if (ZWRITE(zi->z_filefunc,zi->filestream,
1168 ldi->data,ldi->filled_in_this_block)
1169 !=ldi->filled_in_this_block )
1172 size_centraldir += ldi->filled_in_this_block;
1173 ldi = ldi->next_datablock;
1176 free_datablock(zi->central_dir.first_block);
1178 if (err==ZIP_OK) /* Magic End */
1179 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
1181 if (err==ZIP_OK) /* number of this disk */
1182 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
1184 if (err==ZIP_OK) /* number of the disk with the start of the central directory */
1185 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
1187 if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
1188 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
1190 if (err==ZIP_OK) /* total number of entries in the central dir */
1191 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
1193 if (err==ZIP_OK) /* size of the central directory */
1194 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);
1196 if (err==ZIP_OK) /* offset of start of central directory with respect to the
1197 starting disk number */
1198 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,
1199 (uLong)(centraldir_pos_inzip - zi->add_position_when_writting_offset),4);
1201 if (err==ZIP_OK) /* zipfile comment length */
1202 err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
1204 if ((err==ZIP_OK) && (size_global_comment>0))
1205 if (ZWRITE(zi->z_filefunc,zi->filestream,
1206 global_comment,size_global_comment) != size_global_comment)
1209 if (ZCLOSE(zi->z_filefunc,zi->filestream) != 0)
1213 #ifndef NO_ADDFILEINEXISTINGZIP
1214 TRYFREE(zi->globalcomment);