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Newsgroups: comp.sources.misc From: David Kirschbaum <kirsch@usasoc.soc.mil> Subject: v19i096: unzip - Portable unzip v4.1, Part01/06 Message-ID: <1991May20.012040.29123@sparky.IMD.Sterling.COM> X-Md4-Signature: 8f2def4e88a30816021b5578e62b8e5b Date: Mon, 20 May 1991 01:20:40 GMT Approved: kent@sparky.imd.sterling.com Submitted-by: David Kirschbaum <kirsch@usasoc.soc.mil> Posting-number: Volume 19, Issue 96 Archive-name: unzip/part01 Supersedes: unzip-3.1: Volume 14, Issue 102-106 This is unzip v4.1, a public distribution version of the Info-ZIP project's portable generic Unix unzip utility. This version of unzip has been ported to a wide array of Unix and other mainframes, minis, and micros (to include MSDOS, Atari ST (kinda), and Macintosh). Although highly compatible with Phil Katz's PKZIP and PKUNZIP utilities of MSDOS fame, our objective has been one of portability and other-than-MSDOS functionality. See the Makefile (or the system-specific archives) for details on how to compile for your system. See unzip.1 or unzip.man for usage. (No, there isn't a manual per se. There's plenty of space on the Info-ZIP staff for a volunteer!) If any changes are made to source, we'd appreciate them (context diff files only, please) with explanation as appropriate. All E-Mail should go to Info-ZIP@WSMR-SIMTEL20.Army.Mil directly (and not to me: I'm only the Coordinator). However, if you're requesting something special (e.g., a copy of the "No Feelthy ..." rules for source and change submission), E-Mail me personally. If you'd like to keep up to date with our unzip (and companion zip utility) development, join the ranks of BETA testers, add your own thoughts and contributions, etc., send your request to Info-ZIP-Request@WSMR-SIMTEL20.Army.Mil and Keith Petersen'll add you to the Info-ZIP newsletter mailing list. Read unzip41.descr for some more details. David Kirschbaum Toad Hall Info-ZIP Coordinator ----- #! /bin/sh # This is a shell archive. Remove anything before this line, then feed it # into a shell via "sh file" or similar. To overwrite existing files, # type "sh file -c". # The tool that generated this appeared in the comp.sources.unix newsgroup; # send mail to comp-sources-unix@uunet.uu.net if you want that tool. # Contents: MANIFEST . ./v41 ./v41/ATARI_ST ./v41/ATARI_ST/MAKEFILE.ST # ./v41/MAC ./v41/MAC/macstat.c ./v41/MSDOS ./v41/OS2 ./v41/VMS # ./v41/unzip.c.1 # Wrapped by kent@sparky on Sun May 19 19:40:38 1991 PATH=/bin:/usr/bin:/usr/ucb ; export PATH echo If this archive is complete, you will see the following message: echo ' "shar: End of archive 1 (of 6)."' if test -f 'MANIFEST' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'MANIFEST'\" else echo shar: Extracting \"'MANIFEST'\" $1735 characters$ sed "s/^X//" >'MANIFEST' <<'END_OF_FILE' X File Name Archive # Description X---------------------------------------------------------- XMANIFEST 1 This shipping list X. 1 X./v41 1 X./v41/ATARI_ST 1 Atari ST-peculiar files X./v41/ATARI_ST/MAKEFILE.ST 1 X./v41/ATARI_ST/MAKEIT 6 (for Turbo C) X./v41/ATARI_ST/README.ST 5 X./v41/ATARI_ST/TCM 6 X./v41/ATARI_ST/TLINK.OPT 5 X./v41/ATARI_ST/UNZIP.PRJ 6 X./v41/ATARI_ST/tc_cfg.uue 5 Uuencoded binary file X./v41/History.41 4 Development history X./v41/MAC 1 Macintosh-peculiar files X./v41/MAC/macfile.c 5 X./v41/MAC/macstat.c 1 X./v41/MAC/macstat.h 6 X./v41/MSDOS 1 MSDOS-peculiar files X./v41/MSDOS/MAKEFILE.DOS 5 X./v41/MSDOS/UNZIP.PRJ 6 X./v41/MSDOS/tcconfig.uue 6 Uuencoded binary file X./v41/Makefile 4 X./v41/OS2 1 OS2-peculiar files X./v41/OS2/Readme.os2 6 X./v41/OS2/unzip.def 6 X./v41/VMS 1 VMS-peculiar files X./v41/VMS/DESCRIP.MMS 6 X./v41/VMS/VMS_MAKE.COM 6 X./v41/VMS/VMSnotes 5 X./v41/VMS/fatdef.h 6 X./v41/VMS/fchdef.h 6 X./v41/VMS/fjndef.h 2 X./v41/VMS/vms_attr.c 5 X./v41/file_io.c 3 X./v41/mapname.c 4 X./v41/match.c 4 X./v41/misc.c 3 X./v41/unimplod.c 3 X./v41/unreduce.c 5 X./v41/unshrink.c 5 X./v41/unzip.1 5 X./v41/unzip.c.1 1 unzip.c, part 1 X./v41/unzip.c.2 2 unzip.c, part 2 X./v41/unzip.h 2 X./v41/unzip.man 5 X./v41/unzip41.descr 6 Description X./v41/ziprules.txt 5 Rules for contributors END_OF_FILE if test 1735 -ne `wc -c <'MANIFEST'`; then echo shar: \"'MANIFEST'\" unpacked with wrong size! fi # end of 'MANIFEST' fi if test ! -d './v41' ; then echo shar: Creating directory \"'./v41'\" mkdir './v41' fi if test ! -d './v41/ATARI_ST' ; then echo shar: Creating directory \"'./v41/ATARI_ST'\" mkdir './v41/ATARI_ST' fi if test -f './v41/ATARI_ST/MAKEFILE.ST' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'./v41/ATARI_ST/MAKEFILE.ST'\" else echo shar: Extracting \"'./v41/ATARI_ST/MAKEFILE.ST'\" $1093 characters$ sed "s/^X//" >'./v41/ATARI_ST/MAKEFILE.ST' <<'END_OF_FILE' X# Makefile.st Makefile for UnZip 4.0, X# using Turbo C 2.0 for the Atari ST and X# make from the Mark Williams C 3.9 (sorry for that mixture) X# X X# UPPERCASE file names facilitate TD's understanding of modules. X.SUFFIXES: .o .O .c .C .s X XDISK = E: X##################### X# MACRO DEFINITIONS # X##################### X XCC = tcc X#CFLAGS = -DATARI_ST=1 -Y -I=$(DISK)\tc\include XCFLAGS = -DATARI_ST=1 -I=$(DISK)\tc\include X#LFLAGS = -L -Y XLFLAGS = XLIB = $(DISK)\tc\lib XLD = tlink X XOBJS = unzip.o file_io.o mapname.o match.o misc.o\ X unimplod.o unreduce.o unshrink.o X X X############################################### X# BASIC COMPILE INSTRUCTIONS AND DEPENDENCIES # X############################################### X XALL : unzip.prg X echo done X Xunzip.o: unzip.c unzip.h X Xfile_io.o: file_io.c unzip.h X Xmapname.o: mapname.c unzip.h X Xmatch.o: match.c unzip.h X Xmisc.o: misc.c unzip.h X Xunimplod.o: unimplod.c unzip.h X Xunreduce.o: unreduce.c unzip.h X Xunshrink.o: unshrink.c unzip.h X Xunzip.prg: $(OBJS) X tlink -O=$@ $(LFLAGS) -S=4096 -C=tlink.opt X X.c.o: X tcc $(CFLAGS) $< X END_OF_FILE if test 1093 -ne `wc -c <'./v41/ATARI_ST/MAKEFILE.ST'`; then echo shar: \"'./v41/ATARI_ST/MAKEFILE.ST'\" unpacked with wrong size! fi # end of './v41/ATARI_ST/MAKEFILE.ST' fi if test ! -d './v41/MAC' ; then echo shar: Creating directory \"'./v41/MAC'\" mkdir './v41/MAC' fi if test -f './v41/MAC/macstat.c' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'./v41/MAC/macstat.c'\" else echo shar: Extracting \"'./v41/MAC/macstat.c'\" $5947 characters$ sed "s/^X//" >'./v41/MAC/macstat.c' <<'END_OF_FILE' X#ifdef THINK_C X#define MACOS X#include <FileMgr.h> X#include <HFS.h> X#include <pascal.h> X#endif X#ifdef MPW X#define MACOS X#include <Files.h> X#include <Errors.h> X#define FSFCBLen (*(short *)0x3F6) X#define hFileInfo hfileInfo X#define CtoPstr c2pstr X#define PtoCstr p2cstr X#endif X X#ifdef MACOS X#include <string.h> X#include "macstat.h" Xint stat(char *path, struct stat *buf); X X/* assume that the path will contain a Mac-type pathname, i.e. ':'s, etc. */ Xint stat(path, buf) Xchar *path; Xstruct stat *buf; X{ X char temp[256]; X short curVolume; X long curDir; X short fIsHFS = false; X OSErr err; X X if (buf == (struct stat *)0L || path == (char *)0L) { X SysBeep(1); X return -1; X } X X if (path[0] == '\0' || strlen(path)>255) { X return -1; X } X X if (GetVol((StringPtr)&temp[0], &curVolume) != noErr) { X SysBeep(1); X return -1; X } X X /* get info about the specified volume */ X if (FSFCBLen > 0) /* HFS Disk? */ X { X WDPBRec wdpb; X HParamBlockRec hpbr; X Str255 st; X X wdpb.ioCompletion = 0; X wdpb.ioNamePtr = temp; X err = PBHGetVol(&wdpb, 0); X if (err == noErr) X { X hpbr.volumeParam.ioCompletion = 0; X hpbr.volumeParam.ioNamePtr = st; X hpbr.volumeParam.ioVRefNum = wdpb.ioVRefNum; X hpbr.volumeParam.ioVolIndex = 0; X err = PBHGetVInfo(&hpbr, 0); X X if (err == noErr && hpbr.volumeParam.ioVFSID == 0 X && hpbr.volumeParam.ioVSigWord == 0x4244) { X fIsHFS = true; X } X } X } X X X /* number of links, at least in System 6.0x, 0 */ X buf->st_nlink = 0; X /* user id */ X buf->st_uid = 0; X /* group id */ X buf->st_gid = 0; X X if (fIsHFS == true) /* HFS? */ X { X CInfoPBRec cPB; X HParamBlockRec wPB; X X wPB.wdParam.ioCompletion = (ProcPtr)0L; X wPB.wdParam.ioNamePtr = (StringPtr)temp; X err = PBHGetVol((WDPBPtr)&wPB, false); X if (err != noErr) { X SysBeep(1); X return -1; X } X X curVolume = wPB.wdParam.ioWDVRefNum; X buf->st_dev = curDir = wPB.wdParam.ioWDDirID; X X /* get information about file */ X cPB.hFileInfo.ioCompletion = (ProcPtr)0L; X CtoPstr(path); X strncpy(temp,path, path[0]+1); X PtoCstr(path); X cPB.hFileInfo.ioNamePtr = (StringPtr)temp; X cPB.hFileInfo.ioVRefNum = 0; X cPB.hFileInfo.ioDirID = 0; X cPB.hFileInfo.ioFDirIndex = 0; X X err = PBGetCatInfo(&cPB, false); X X if (err != noErr) { X if (err != fnfErr) { X SysBeep(1); X } X return -1; X } X X /* Type of file: directory or regular file */ X buf->st_mode = (cPB.hFileInfo.ioFlAttrib & ioDirMask) ? S_IFDIR : S_IFREG; X X /* last access time, modification time and creation time(?) */ X buf->st_atime = buf->st_mtime = cPB.hFileInfo.ioFlMdDat; X buf->st_ctime = cPB.hFileInfo.ioFlCrDat; X /* inode number */ X buf->st_ino = cPB.hFileInfo.ioDirID + ((long)curVolume)<<16; X /* size of file - use only the data fork */ X buf->st_size = cPB.hFileInfo.ioFlLgLen; X /* size of disk block */ X if (cPB.hFileInfo.ioFlClpSiz == 0) { X HParamBlockRec hPB; X X hPB.volumeParam.ioCompletion = (ProcPtr)0L; X hPB.volumeParam.ioNamePtr = (StringPtr)temp; X hPB.volumeParam.ioVRefNum = 0; X hPB.volumeParam.ioVolIndex = 0; X X err = PBHGetVInfo(&hPB, false); X X if (err != noErr) { X SysBeep(1); X return -1; X } X X buf->st_blksize = hPB.volumeParam.ioVClpSiz; X } X else X buf->st_blksize = cPB.hFileInfo.ioFlClpSiz; X X buf->st_blocks = cPB.hFileInfo.ioFlPyLen/ buf->st_blksize; X } X else /* MFS? */ X { X ParamBlockRec pPB; X X buf->st_dev = 0; X X CtoPstr(path); X strncpy(temp, path, path[0]+1); X PtoCstr(path); X pPB.fileParam.ioCompletion = (ProcPtr)0; X pPB.fileParam.ioNamePtr = (StringPtr)temp; X pPB.fileParam.ioVRefNum = curVolume; X pPB.fileParam.ioFVersNum = 0; X pPB.fileParam.ioFDirIndex = 0; X X err = PBGetFInfo(&pPB, false); X X if (err != noErr) { X SysBeep(1); X return -1; X } X X /* Type of file: either directory or regular file */ X buf->st_mode = (pPB.fileParam.ioFlAttrib & ioDirMask) ? S_IFDIR : S_IFREG; X X /* last access time, modification time and creation time(?) */ X buf->st_atime = buf->st_mtime = pPB.fileParam.ioFlMdDat; X buf->st_ctime = pPB.fileParam.ioFlCrDat; X /* inode number */ X buf->st_ino = pPB.fileParam.ioFlNum + ((long)curVolume)<<16; X /* size of file - use only the data fork */ X buf->st_size = pPB.fileParam.ioFlLgLen; X /* size of disk block */ X { X ParamBlockRec hPB; X X hPB.volumeParam.ioCompletion = (ProcPtr)0; X hPB.volumeParam.ioNamePtr = (StringPtr)temp; X hPB.volumeParam.ioVRefNum = curVolume; X hPB.volumeParam.ioVolIndex = 0; X X err = PBGetVInfo(&hPB, false); X X if (err != noErr) { X SysBeep(1); X return -1; X } X X buf->st_blksize = hPB.volumeParam.ioVClpSiz; X } X X /* number of disk blocks used by file - includes resource fork */ X buf->st_blocks = pPB.fileParam.ioFlPyLen/ buf->st_blksize + X pPB.fileParam.ioFlRPyLen/buf->st_blksize; X } X X return 0; X} X#else X#error 1 X#endif END_OF_FILE if test 5947 -ne `wc -c <'./v41/MAC/macstat.c'`; then echo shar: \"'./v41/MAC/macstat.c'\" unpacked with wrong size! fi # end of './v41/MAC/macstat.c' fi if test ! -d './v41/MSDOS' ; then echo shar: Creating directory \"'./v41/MSDOS'\" mkdir './v41/MSDOS' fi if test ! -d './v41/OS2' ; then echo shar: Creating directory \"'./v41/OS2'\" mkdir './v41/OS2' fi if test ! -d './v41/VMS' ; then echo shar: Creating directory \"'./v41/VMS'\" mkdir './v41/VMS' fi if test -f './v41/unzip.c.1' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'./v41/unzip.c.1'\" else echo shar: Extracting \"'./v41/unzip.c.1'\" $38155 characters$ sed "s/^X//" >'./v41/unzip.c.1' <<'END_OF_FILE' X/*--------------------------------------------------------------------------- X X unzip.c X X This is nearly a complete rewrite of unzip.c, mainly to allow access to X zipfiles via the central directory (and hence to the OS bytes, so we can X make intelligent decisions about what to do with the extracted files). X Based on unzip.c 3.15+ and zipinfo.c 0.90. X X --------------------------------------------------------------------------- X X To compile (partial instructions): X X under Unix (cc): make <system name> X (type "make" for list of valid names, or read Makefile for details) X X under MS-DOS (TurboC): make -fMAKEFILE.DOS for command line compiles X (or use the integrated environment and the included files TCCONFIG.TC X and UNZIP.PRJ. Tweak for your environment.) X X under MS-DOS (MSC): make MAKEFILE.DOS X (or use Makefile if you have MSC 6.0: "nmake msc_dos") X X under OS/2 (MSC): make MAKEFILE.DOS (edit appropriately) X (or use Makefile if you have MSC 6.0: "nmake msc_os2") X X under Atari OS: Any Day Now. X X under VMS: DEFINE LNK$LIBRARY SYS$LIBRARY:VAXCRTL.OLB (see VMSNOTES) X CC UNZIP,FILE_IO,MAPNAME,MATCH,...,UNSHRINK X LINK UNZIP,FILE_IO,MAPNAME,MATCH,...,UNSHRINK X UNZIP :== $DISKNAME:[DIRECTORY]UNZIP.EXE X X under Macintosh OS: Double click on unzip.mac. Press <Command>-M X X --------------------------------------------------------------------------- X X Version: unzip41.arc/unzip41.tar.Z for Unix, VMS, OS/2, MS-DOS & Mac X Source: wsmr-simtel20.army.mil (192.88.110.20) in pd1:[misc.unix] X wuarchive.wustl.edu (128.252.135.4) in /mirrors/misc/unix X Source: wsmr-simtel20.army.mil (26.2.0.74) in pd1:[misc.unix] X X --------------------------------------------------------------------------- X X Copyright, originally from version 1.2 (?): X X * Copyright 1989 Samuel H. Smith; All rights reserved X * X * Do not distribute modified versions without my permission. X * Do not remove or alter this notice or any other copyright notice. X * If you use this in your own program you must distribute source code. X * Do not use any of this in a commercial product. X X --------------------------------------------------------------------------- X X Comments from unzip.c, version 3.11: X X * UnZip - A simple zipfile extract utility X * X * Compile-time definitions: X * See the Makefile for details, explanations, and all the current X * system makerules. X * X * If you have to add a new one for YOUR system, please forward the new X * Makefile context diff to kirsch%maxemail@uunet.uu.net for distribution. X * Be SURE to give FULL details on your system (hardware, OS, versions, X * processor, whatever) that made it unique. X * X * REVISION HISTORY : See History.41 (or whatever current version is) X X To join Info-ZIP, send a message to Info-ZIP-Request@WSMR-Simtel20.Army.Mil X X ---------------------------------------------------------------------------*/ X X X X X X#include "unzip.h" /* includes, defines, and macros */ X X#define VERSION "v4.1 of 5-13-91" X#define PAKFIX /* temporary solution to PAK-created zipfiles */ X X X X X X/**********************/ X/* Global Variables */ X/**********************/ X Xint tflag; /* -t: test */ Xint vflag; /* -v: view directory (only used in unzip.c) */ Xint cflag; /* -c: output to stdout */ Xint aflag; /* -a: do ascii to ebcdic translation OR CR-LF */ X /* to CR or LF conversion of extracted files */ Xint dflag; /* -d: create containing directories */ Xint Uflag; /* -U: leave filenames in upper or mixed case */ Xint V_flag; /* -V: don't strip VMS version numbers */ Xint quietflg; /* -q: produce a lot less output */ Xint do_all; /* -o: OK to overwrite files without prompting */ Xint zflag; /* -z: Display only the archive comment */ X Xint lcflag; /* convert filename to lowercase */ Xunsigned f_attr; /* file attributes (permissions) */ Xlongint csize; /* used by list_files(), ReadByte(): must be signed */ Xlongint ucsize; /* used by list_files(), unReduce(), unImplode() */ X X/*--------------------------------------------------------------------------- X unShrink/unReduce/unImplode working storage: X ---------------------------------------------------------------------------*/ X X/* prefix_of (for unShrink) is biggest storage area, esp. on Crays...space */ X/* is shared by lit_nodes (unImplode) and followers (unReduce) */ X Xshort prefix_of[HSIZE + 1]; /* (8193 * sizeof(short)) */ X#ifdef MACOS Xbyte *suffix_of; Xbyte *stack; X#else Xbyte suffix_of[HSIZE + 1]; /* also s-f length_nodes (smaller) */ Xbyte stack[HSIZE + 1]; /* also s-f distance_nodes (smaller) */ X#endif X XULONG crc32val; X XUWORD mask_bits[] = X{0, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff, X 0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff}; X X/*--------------------------------------------------------------------------- X Input file variables: X ---------------------------------------------------------------------------*/ X Xbyte *inbuf, *inptr; /* input buffer (any size is legal) and pointer */ Xint incnt; X XUWORD bitbuf; Xint bits_left; Xboolean zipeof; X Xint zipfd; /* zipfile file handle */ Xchar zipfn[FILNAMSIZ]; X Xlocal_file_header lrec; Xstruct stat statbuf; /* used by main(), mapped_name() */ X Xlongint cur_zipfile_bufstart; /* extract_or_test_files, readbuf, ReadByte */ X X/*--------------------------------------------------------------------------- X Output stream variables: X ---------------------------------------------------------------------------*/ X Xbyte *outbuf; /* buffer for rle look-back */ Xbyte *outptr; Xbyte *outout; /* scratch pad for ASCII-native trans */ Xlongint outpos; /* absolute position in outfile */ Xint outcnt; /* current position in outbuf */ X Xint outfd; Xchar filename[FILNAMSIZ]; X X/*--------------------------------------------------------------------------- X unzip.c static global variables (visible only within this file): X ---------------------------------------------------------------------------*/ X Xstatic char *fnames[2] = X{"*", NULL}; /* default filenames vector */ Xstatic char **fnv = &fnames[0]; Xstatic char sig[5]; Xstatic byte *hold; Xstatic int process_all_files; Xstatic longint ziplen; Xstatic UWORD hostnum; Xstatic UWORD methnum; X/* static UWORD extnum; */ Xstatic central_directory_file_header crec; Xstatic end_central_dir_record ecrec; X X/*--------------------------------------------------------------------------- X unzip.c repeated error messages (we use all of these at least twice ==> X worth it to centralize to keep executable small): X ---------------------------------------------------------------------------*/ X Xstatic char *CryptMsg = X "%s: encrypted (can't do yet)--skipping.\n"; Xstatic char *FilNamMsg = X "\n%s: bad filename length (%s)\n"; Xstatic char *ExtFieldMsg = X "\n%s: bad extra field length (%s)\n"; Xstatic char *OffsetMsg = X "\n%s: bad zipfile offset (%s)\n"; Xstatic char *EndSigMsg = X "\nwarning: didn't find end-of-central-dir signature at end of central dir.\n"; Xstatic char *CentSigMsg = X "\nerror: expected central file header signature not found (file #%u).\n"; Xstatic char *ReportMsg = X " (please report to info-zip@wsmr-simtel20.army.mil)\n"; X X/* (original) Bill Davidsen version */ X#define QCOND (!quietflg) /* -xq[q] kill "extracting: ..." msgs */ X#define QCOND2 (which_hdr) /* file comments with -v, -vq, -vqq */ X X X X X/*****************/ X/* Main program */ X/*****************/ X Xmain(argc, argv) /* return PK-type error code (except under VMS) */ Xint argc; Xchar *argv[]; X{ X char *s; X int c, print_usage=TRUE; X X X X#ifdef MACOS X#ifdef THINK_C X #include <console.h> X #include <StdFilePkg.h> X typedef struct sf_node { /* node in a true shannon-fano tree */ X UWORD left; /* 0 means leaf node */ X UWORD right; /* or value if leaf node */ X } sf_node; X static char *argstr[30], args[30*64]; X X extern sf_node *lit_nodes, *length_nodes, *distance_nodes; X X Point p; X SFTypeList sfT; X int a; X EventRecord theEvent; X short eMask; X SFReply fileRep; X X suffix_of = (byte *)calloc(HSIZE+1, sizeof(byte)); X stack = (byte *)calloc(HSIZE+1, sizeof(byte)); X length_nodes = (sf_node *) suffix_of; /* 2*LENVALS nodes */ X distance_nodes = (sf_node *) stack; /* 2*DISTVALS nodes */ X X for (a=0; a<30; a+=1) X { X argstr[a] = &args[a*64]; X } Xstart: X tflag = vflag=cflag=aflag=dflag=Uflag=quietflg=lcflag=zflag = 0; X argc = ccommand(&argv); X SetPt(&p, 40,40); X X SFGetFile(p, "\pSpecify ZIP file:", 0L, -1, sfT, 0L, &fileRep); X if (!fileRep.good) X exit(1); X macfstest(fileRep.vRefNum, true); X SetMacVol(NULL, fileRep.vRefNum); X for (a=1; a<argc; a+=1) X { X if (argv[a][0] == '-') X { X BlockMove(argv[a], argstr[a], (strlen(argv[a])>63) ? 64 : strlen(argv[a])+1); X } X else X break; X } X PtoCstr((char *)fileRep.fName); X strcpy(argstr[a], fileRep.fName); X for (;a<argc; a+=1) X { X BlockMove(argv[a], argstr[a+1], (strlen(argv[a])>63) ? 64 : strlen(argv[a])+1); X } X argc+=1; X argv = argstr; X X#endif /* THINK_C */ X#endif /* MACOS */ X X/*--------------------------------------------------------------------------- X Debugging info for checking on structure padding: X ---------------------------------------------------------------------------*/ X X#ifdef DEBUG_STRUC X printf("local_file_header size: %X\n", X sizeof(struct local_file_header)); X printf("local_byte_header size: %X\n", X sizeof(struct local_byte_header)); X printf("actual size of local headers: %X\n", LREC_SIZE); X X printf("central directory header size: %X\n", X sizeof(struct central_directory_file_header)); X printf("central directory byte header size: %X\n", X sizeof(struct central_directory_byte_header)); X printf("actual size of central dir headers: %X\n", CREC_SIZE); X X printf("end central dir record size: %X\n", X sizeof(struct end_central_dir_record)); X printf("end central dir byte record size: %X\n", X sizeof(struct end_central_byte_record)); X printf("actual size of end-central-dir record: %X\n", ECREC_SIZE); X#endif X X#ifndef KNOW_IT_WORKS /* define this to save space, if things already work */ X#ifndef DOS_OS2 /* already works (no RISCy OS/2's yet...) */ X#ifndef NOTINT16 /* whole point is to see if this NEEDS defining */ X { X int error=0; X long testsig; X static char *mach_type[3] = {"big-endian", X "structure-padding", "big-endian and structure-padding"}; X strcpy((char *)&testsig,"012"); X if (testsig != 0x00323130) X error = 1; X if (sizeof(central_directory_file_header) != CREC_SIZE) X error += 2; X if (error--) X fprintf(stderr, "It appears that your machine is %s. If errors\n\ Xoccur, please try recompiling with \"NOTINT16\" defined (read the\n\ XMakefile, or try \"make hp\").\n\n", mach_type[error]); X } X#endif /* !NOTINT16 */ X#endif /* !DOS_OS2 */ X#endif /* !KNOW_IT_WORKS */ X X/*--------------------------------------------------------------------------- X Rip through any command-line options lurking about... X ---------------------------------------------------------------------------*/ X X while (--argc > 0 && (*++argv)[0] == '-') { X s = argv[0] + 1; X while ((c = *s++) != 0) { /* "!= 0": prevent Turbo C warning */ X switch (c) { X case ('x'): /* just ignore -x, -e options (extract) */ X case ('e'): X break; X case ('q'): X ++quietflg; X break; X case ('t'): X ++tflag; X break; X case ('v'): X ++vflag; X /* fall thru */ X case ('l'): X ++vflag; X break; X case ('p'): X ++cflag; X#ifdef NATIVE X ++aflag; X#endif X quietflg += 2; X break; X case ('c'): X ++cflag; X#ifdef NATIVE X ++aflag; /* this is so you can read it on the screen */ X#endif X break; X case ('a'): X ++aflag; X break; X#ifdef VMS X case ('u'): /* switches converted to l.c. unless quoted */ X#endif X case ('U'): /* "uppercase flag" (i.e., don't convert) */ X ++Uflag; X break; X case ('V'): /* Version flag: retain VMS/DEC-20 file versions */ X ++V_flag; X break; X case ('d'): /* create parent dirs flag */ X#ifdef MACOS X if (hfsflag == true) X#endif X ++dflag; X break; X case ('o'): /* OK to overwrite files without prompting */ X ++do_all; X break; X case ('z'): /* Display only the archive commentp */ X ++zflag; X break; X default: X if (print_usage) { X usage(); X print_usage = FALSE; X } X break; X } X } X } X X/*--------------------------------------------------------------------------- X Make sure we aren't trying to do too many things here. [This seems like X kind of a brute-force way to do things; but aside from that, isn't the X -a option useful when listing the directory (i.e., for reading zipfile X comments)? It's a modifier, not an action in and of itself, so perhaps X it should not be included in the test--certainly, in the case of zipfile X testing, it can just be ignored.] X ---------------------------------------------------------------------------*/ X X if ((tflag && vflag) || (tflag && cflag) || (vflag && cflag) || X (tflag && aflag) || (aflag && vflag)) { X fprintf(stderr, "only one of -t, -c, -a, or -v\n"); X RETURN(10); /* 10: bad or illegal parameters specified */ X } X if (quietflg && zflag) X quietflg = 0; X if (argc-- == 0) { X if (print_usage) X usage(); X RETURN(10); /* 10: bad or illegal parameters specified */ X } X/*--------------------------------------------------------------------------- X Now get the zipfile name from the command line and see if it exists as a X regular (non-directory) file. If not, append the ".zip" suffix. We don't X immediately check to see if this results in a good name, but we will do so X later. In the meantime, see if there are any member filespecs on the com- X mand line, and if so, set the filename pointer to point at them. X ---------------------------------------------------------------------------*/ X X strcpy(zipfn, *argv++); X if (stat(zipfn, &statbuf) || (statbuf.st_mode & S_IFMT) == S_IFDIR) X strcat(zipfn, ZSUFX); X X if (stat(zipfn, &statbuf)) {/* try again */ X fprintf(stderr, "error: can't find zipfile [ %s ]\n", zipfn); X RETURN(9); /* 9: file not found */ X } else X ziplen = statbuf.st_size; X X if (argc != 0) { X fnv = argv; X process_all_files = FALSE; X } else X process_all_files = TRUE; /* for speed */ X X/*--------------------------------------------------------------------------- X Okey dokey, we have everything we need to get started. Let's roll. X ---------------------------------------------------------------------------*/ X X inbuf = (byte *) (malloc(INBUFSIZ + 4)); /* 4 extra for hold[] (below) */ X outbuf = (byte *) (malloc(OUTBUFSIZ + 1)); /* 1 extra for string termin. */ X if (aflag) /* if need an ascebc scratch, */ X outout = (byte *) (malloc(OUTBUFSIZ)); X else /* allocate it... */ X outout = outbuf; /* else just point to outbuf */ X X if ((inbuf == NULL) || (outbuf == NULL) || (outout == NULL)) { X fprintf(stderr, "error: can't allocate unzip buffers\n"); X RETURN(4); /* 4-8: insufficient memory */ X } X hold = &inbuf[INBUFSIZ]; /* to check for boundary-spanning signatures */ X X#ifdef THINK_C X if (!process_zipfile()) X goto start; X#else X RETURN(process_zipfile()); /* keep passing errors back... */ X#endif X X} /* end main() */ X X X X X X/*********************/ X/* Function usage() */ X/*********************/ X Xvoid usage() X{ X#ifdef NATIVE X char *astring = "-a convert ASCII to native character set"; X#else X#ifdef MACOS X char *astring = "-a convert to Mac textfile format (CR LF => CR)"; X#else X#ifdef DOS_OS2 X char *astring = "-a convert to DOS & OS/2 textfile format (LF => CR LF)"; X#else X char *astring = "-a convert to Unix/VMS textfile format (CR LF => LF)"; X#endif /* ?DOS_OS2 */ X#endif /* ?MACOS */ X#endif /* ?NATIVE */ X X X fprintf(stderr, "UnZip: Zipfile Extract %s; (C) 1989 Samuel H. Smith\n", X VERSION); X fprintf(stderr, "Courtesy of: S.H.Smith and The Tool Shop BBS, \ X(602) 279-2673.\n\n"); X fprintf(stderr, "Versions 3.0 and later brought to you by the fine folks \ Xat Info-ZIP\n"); X fprintf(stderr, "(Info-ZIP@WSMR-Simtel20.Army.Mil)\n\n"); X fprintf(stderr, "Usage: unzip [ -xecptlvz[qadoUV] ] file[.zip] [filespec...]\n\ X -x,-e extract files in archive (default--i.e., this flag is optional)\n\ X -c extract files to stdout (\"CRT\")\n\ X -p extract files to stdout and no informational messages (for pipes)\n\ X -t test files\n\ X -l list files (short format)\n\ X -v verbose listing of files\n"); X fprintf(stderr, "\ X -z display only the archive comment\n\ X -q perform operations quietly (up to two q's allowed)\n\ X %s\n\ X -d include directory structure when extracting/listing\n\ X -o OK to overwrite files without prompting\n\ X -U don't map filenames to lowercase for selected (uppercase) OS's\n\ X -V retain file version numbers\n", astring); X X#ifdef VMS X fprintf(stderr, "Remember that non-lowercase filespecs must be quoted in \ XVMS (e.g., \"Makefile\").\n"); X#endif X X} /* end function usage() */ X X X X X X/*******************************/ X/* Function process_zipfile() */ X/*******************************/ X Xint process_zipfile() X/* return PK-type error code */ X{ X int error=0, error_in_archive; X X X X/*--------------------------------------------------------------------------- X Open the zipfile for reading and in BINARY mode to prevent CR/LF trans- X lation, which would corrupt the bitstreams. Then find and process the X central directory; list, extract or test member files as instructed; and X close the zipfile. X ---------------------------------------------------------------------------*/ X X#ifdef VMS X change_zipfile_attributes(0); X#endif X if (open_input_file()) /* this should never happen, given the */ X return (9); /* stat() test in main(), but... */ X X if (find_end_central_dir()) /* not found; nothing to do */ X return (2); /* 2: error in zipfile */ X X#ifdef TEST X printf("\n found end-of-central-dir signature at offset %ld (%.8lXh)\n", X cur_zipfile_bufstart+(inptr-inbuf), cur_zipfile_bufstart+(inptr-inbuf) ); X printf(" from beginning of file; offset %d (%.4Xh) within block\n", X inptr-inbuf, inptr-inbuf); X#endif X X if ((error_in_archive = process_end_central_dir()) > 1) X return (error_in_archive); X X if (zflag) X return (0); X X#ifndef PAKFIX X if (ecrec.number_this_disk == 0) { X#else /* PAKFIX */ X if (ecrec.number_this_disk == 0 || (error = (ecrec.number_this_disk == 1 X && ecrec.num_disk_with_start_central_dir == 1))) { X X if (error) { X fprintf(stderr, X "\n Warning: zipfile claims to be disk 2 of a two-part archive;\n\ X attempting to process anyway. If no further errors occur, this\n\ X archive was probably created by PAK v2.5 or earlier. This bug\n\ X has been reported to NoGate and should be fixed by mid-April 1991.\n\n"); X error_in_archive = 1; /* 1: warning */ X } X#endif /* ?PAKFIX */ X if (vflag) X error = list_files(); /* LIST 'EM */ X else X error = extract_or_test_files(); /* EXTRACT OR TEST 'EM */ X if (error > error_in_archive) /* don't overwrite stronger error */ X error_in_archive = error; /* with (for example) a warning */ X } else { X fprintf(stderr, "\nerror: zipfile is part of multi-disk archive \ X(sorry, no can do).\n"); X fprintf(stderr, ReportMsg); /* report to info-zip */ X error_in_archive = 11; /* 11: no files found */ X } X X close(zipfd); X#ifdef VMS X change_zipfile_attributes(1); X#endif X return (error_in_archive); X X} /* end function process_zipfile() */ X X X X X X/************************************/ X/* Function find_end_central_dir() */ X/************************************/ X Xint find_end_central_dir() X/* return 0 if found, 1 otherwise */ X{ X int i, numblks; X longint tail_len; X X X X/*--------------------------------------------------------------------------- X Treat case of short zipfile separately. X ---------------------------------------------------------------------------*/ X X if (ziplen <= INBUFSIZ) { X lseek(zipfd, 0L, SEEK_SET); X if ((incnt = read(zipfd,inbuf,(unsigned int)ziplen)) == ziplen) X X /* 'P' must be at least 22 bytes from end of zipfile */ X for ( inptr = inbuf+ziplen-22 ; inptr >= inbuf ; --inptr ) X if ( (ascii_to_native(*inptr) == 'P') && X !strncmp((char *)inptr, END_CENTRAL_SIG, 4) ) { X incnt -= inptr - inbuf; X return(0); /* found it! */ X } /* ...otherwise fall through & fail */ X X/*--------------------------------------------------------------------------- X Zipfile is longer than INBUFSIZ: may need to loop. Start with short X block at end of zipfile (if not TOO short). X ---------------------------------------------------------------------------*/ X X } else { X if ((tail_len = ziplen % INBUFSIZ) > ECREC_SIZE) { X cur_zipfile_bufstart = lseek(zipfd, ziplen-tail_len, SEEK_SET); X if ((incnt = read(zipfd,inbuf,(unsigned int)tail_len)) != tail_len) X goto fail; /* shut up, it's expedient. */ X X /* 'P' must be at least 22 bytes from end of zipfile */ X for ( inptr = inbuf+tail_len-22 ; inptr >= inbuf ; --inptr ) X if ( (ascii_to_native(*inptr) == 'P') && X !strncmp((char *)inptr, END_CENTRAL_SIG, 4) ) { X incnt -= inptr - inbuf; X return(0); /* found it! */ X } /* ...otherwise search next block */ X strncpy((char *)hold, (char *)inbuf, 3); /* sig may span block X boundary */ X X } else { X cur_zipfile_bufstart = ziplen - tail_len; X } X X /* X * Loop through blocks of zipfile data, starting at the end and going X * toward the beginning. Need only check last 65557 bytes of zipfile: X * comment may be up to 65535 bytes long, end-of-central-directory rec- X * ord is 18 bytes (shouldn't hardcode this number, but what the hell: X * already did so above (22=18+4)), and sig itself is 4 bytes. X */ X X /* ==amt to search== ==done== ==rounding== =blksiz= */ X numblks = ( min(ziplen,65557) - tail_len + (INBUFSIZ-1) ) / INBUFSIZ; X X for ( i = 1 ; i <= numblks ; ++i ) { X cur_zipfile_bufstart -= INBUFSIZ; X lseek(zipfd, cur_zipfile_bufstart, SEEK_SET); X if ((incnt = read(zipfd,inbuf,INBUFSIZ)) != INBUFSIZ) X break; /* fall through and fail */ X X for ( inptr = inbuf+INBUFSIZ-1 ; inptr >= inbuf ; --inptr ) X if ( (ascii_to_native(*inptr) == 'P') && X !strncmp((char *)inptr, END_CENTRAL_SIG, 4) ) { X incnt -= inptr - inbuf; X return(0); /* found it! */ X } X strncpy((char *)hold, (char *)inbuf, 3); /* sig may span block X boundary */ X } X X } /* end if (ziplen > INBUFSIZ) */ X X/*--------------------------------------------------------------------------- X Searched through whole region where signature should be without finding X it. Print informational message and die a horrible death. X ---------------------------------------------------------------------------*/ X Xfail: X X fprintf(stderr, "\nFile: %s\n\n\ X End-of-central-directory signature not found. Either this file is not\n\ X a zipfile, or it constitutes one disk of a multi-part archive. In the\n\ X latter case the central directory and zipfile comment will be found on\n\ X the last disk(s) of this archive.\n", zipfn); X return(1); X X} /* end function find_end_central_dir() */ X X X X X X/***************************************/ X/* Function process_end_central_dir() */ X/***************************************/ X Xint process_end_central_dir() X/* return PK-type error code */ X{ X#ifdef NOTINT16 X end_central_byte_record byterec; X#endif X int error=0; X X X X/*--------------------------------------------------------------------------- X Read the end-of-central-directory record and do any necessary machine- X type conversions (byte ordering, structure padding compensation). X ---------------------------------------------------------------------------*/ X X#ifndef NOTINT16 X if (readbuf((char *) &ecrec, ECREC_SIZE+4) <= 0) X return (51); /* 51: unexpected EOF */ X X#else /* NOTINT16: read data into character array, then copy to struct */ X if (readbuf((char *) byterec, ECREC_SIZE+4) <= 0) X return (51); X X ecrec.number_this_disk = X makeword(&byterec[NUMBER_THIS_DISK]); X ecrec.num_disk_with_start_central_dir = X makeword(&byterec[NUM_DISK_WITH_START_CENTRAL_DIR]); X ecrec.num_entries_centrl_dir_ths_disk = X makeword(&byterec[NUM_ENTRIES_CENTRL_DIR_THS_DISK]); X ecrec.total_entries_central_dir = X makeword(&byterec[TOTAL_ENTRIES_CENTRAL_DIR]); X ecrec.size_central_directory = X makelong(&byterec[SIZE_CENTRAL_DIRECTORY]); X ecrec.offset_start_central_directory = X makelong(&byterec[OFFSET_START_CENTRAL_DIRECTORY]); X ecrec.zipfile_comment_length = X makeword(&byterec[ZIPFILE_COMMENT_LENGTH]); X#endif /* NOTINT16 */ X X/*--------------------------------------------------------------------------- X Get the zipfile comment, if any, and print it out. (Comment may be up X to 64KB long. May the fleas of a thousand camels infest the armpits of X anyone who actually takes advantage of this fact.) Then position the X file pointer to the beginning of the central directory and fill buffer. X ---------------------------------------------------------------------------*/ X X if (ecrec.zipfile_comment_length && !quietflg) { X if (!zflag) X printf("[%s] comment: ", zipfn); X if (do_string(ecrec.zipfile_comment_length,DISPLAY)) { X fprintf(stderr, "\nwarning: zipfile comment truncated\n"); X error = 1; /* 1: warning error */ X } X if (!zflag) X printf("\n\n"); X } X LSEEK( ULONG_(ecrec.offset_start_central_directory) ) X X return (error); X X} /* end function process_end_central_dir() */ X X X X X X/**************************/ X/* Function list_files() */ X/**************************/ X Xint list_files() X/* return PK-type error code */ X{ X char **fnamev; X int do_this_file = FALSE, ratio, error, error_in_archive = 0; X int which_hdr = (vflag > 1); X UWORD j, yr, mo, dy, hh, mm, members = 0; X ULONG tot_csize = 0L, tot_ucsize = 0L; X static char *method[NUM_METHODS + 1] = X {"Stored", "Shrunk", "Reduce1", "Reduce2", X "Reduce3", "Reduce4", "Implode", "Unknown"}; X static char *Headers[][2] = X { X {" Length Date Time Name", X " ------ ---- ---- ----"}, X {" Length Method Size Ratio Date Time CRC-32 Name", X " ------ ------ ---- ----- ---- ---- ------ ----"}}; X X X X/*--------------------------------------------------------------------------- X Unlike extract_or_test_files(), this routine confines itself to the cen- X tral directory. Thus its structure is somewhat simpler, since we can do X just a single loop through the entire directory, listing files as we go. X X So to start off, print the heading line and then begin main loop through X the central directory. The results will look vaguely like the following: X X Length Method Size Ratio Date Time CRC-32 Name ("^" ==> case X ------ ------ ---- ----- ---- ---- ------ ---- conversion) X 44004 Implode 13041 71% 11-02-89 19:34 8b4207f7 Makefile.UNIX X 3438 Shrunk 2209 36% 09-15-90 14:07 a2394fd8 ^dos-file.ext X ---------------------------------------------------------------------------*/ X X if (quietflg < 2) X if (Uflag) X printf("%s\n%s\n", Headers[which_hdr][0], Headers[which_hdr][1]); X else X printf("%s (\"^\" ==> case\n%s conversion)\n", X Headers[which_hdr][0], Headers[which_hdr][1]); X X for (j = 0; j < ecrec.total_entries_central_dir; ++j) { X X if (readbuf(sig, 4) <= 0) X return (51); /* 51: unexpected EOF */ X if (strncmp(sig, CENTRAL_HDR_SIG, 4)) { /* just to make sure */ X fprintf(stderr, CentSigMsg, j); /* sig not found */ X fprintf(stderr, ReportMsg); /* report to info-zip */ X return (3); /* 3: error in zipfile */ X } X if ((error = process_central_file_header()) != 0) /* (sets lcflag) */ X return (error); /* only 51 (EOF) defined */ X X /* X * We could DISPLAY the filename instead of storing (and possibly trun- X * cating, in the case of a very long name) and printing it, but that X * has the disadvantage of not allowing case conversion--and it's nice X * to be able to see in the listing precisely how you have to type each X * filename in order for unzip to consider it a match. Speaking of X * which, if member names were specified on the command line, check in X * with match() to see if the current file is one of them, and make a X * note of it if it is. X */ X X if ((error = do_string(crec.filename_length, FILENAME)) != 0) { X error_in_archive = error; /* (uses lcflag)---^ */ X if (error > 1) /* fatal: can't continue */ X return (error); X } X if ((error = do_string(crec.extra_field_length, SKIP)) != 0) { X error_in_archive = error; /* might be just warning */ X if (error > 1) /* fatal */ X return (error); X } X if (!process_all_files) { /* check if specified on command line */ X do_this_file = FALSE; X fnamev = fnv; /* don't destroy permanent filename ptr */ X for (--fnamev; *++fnamev;) X if (match(filename, *fnamev)) { X do_this_file = TRUE; X break; /* found match, so stop looping */ X } X } X /* X * If current file was specified on command line, or if no names were X * specified, do the listing for this file. Otherwise, get rid of the X * file comment and go back for the next file. X */ X X if (process_all_files || do_this_file) { X X yr = (((crec.last_mod_file_date >> 9) & 0x7f) + 80) % 100; X mo = (crec.last_mod_file_date >> 5) & 0x0f; X dy = crec.last_mod_file_date & 0x1f; X hh = (crec.last_mod_file_time >> 11) & 0x1f; X mm = (crec.last_mod_file_time >> 5) & 0x3f; X X csize = (longint) ULONG_(crec.compressed_size); X ucsize = (longint) ULONG_(crec.uncompressed_size); X if (crec.general_purpose_bit_flag & 1) X csize -= 12; /* if encrypted, don't count encrypt hdr */ X X ratio = (ucsize == 0) ? 0 : /* .zip can have 0-length members */ X ((ucsize > 2000000) ? /* risk signed overflow if mult. */ X (int) ((ucsize-csize) / (ucsize/1000L)) + 5 : /* big */ X (int) ((1000L*(ucsize-csize)) / ucsize) + 5); /* small */ X X switch (which_hdr) { X case 0: /* short form */ X printf("%7ld %02u-%02u-%02u %02u:%02u %c%s\n", X ucsize, mo, dy, yr, hh, mm, (lcflag?'^':' '), filename); X break; X case 1: /* verbose */ X printf( X "%7ld %-7s%7ld %3d%% %02u-%02u-%02u %02u:%02u %08lx %c%s\n", X ucsize, method[methnum], csize, ratio/10, mo, dy, yr, hh, mm, X ULONG_(crec.crc32), (lcflag?'^':' '), filename); X } X X error = do_string(crec.file_comment_length, (QCOND2 ? DISPLAY : SKIP)); X if (error) { X error_in_archive = error; /* might be just warning */ X if (error > 1) /* fatal */ X return (error); X } X tot_ucsize += (ULONG) ucsize; X tot_csize += (ULONG) csize; X ++members; X X } else { /* not listing this file */ X if ((error = do_string(crec.file_comment_length, SKIP)) != 0) { X error_in_archive = error; /* might be warning */ X if (error > 1) /* fatal */ X return (error); X } X } X } /* end for-loop (j: files in central directory) */ X X/*--------------------------------------------------------------------------- X Print footer line and totals (compressed size, uncompressed size, number X of members in zipfile). X ---------------------------------------------------------------------------*/ X X ratio = (tot_ucsize == 0) ? X 0 : ((tot_ucsize > 4000000) ? /* risk unsigned overflow if mult. */ X (int) ((tot_ucsize - tot_csize) / (tot_ucsize/1000L)) + 5 : X (int) ((tot_ucsize - tot_csize) * 1000L / tot_ucsize) + 5); X X if (quietflg < 2) { X switch (which_hdr) { X case 0: /* short */ X printf("%s\n%7lu %-7u\n", X " ------ -------", X tot_ucsize, members); X break; X case 1: /* verbose */ X printf( X "%s\n%7lu %7lu %3d%% %-7u\n", X " ------ ------ --- -------", X tot_ucsize, tot_csize, ratio / 10, members); X } X } X/*--------------------------------------------------------------------------- X Double check that we're back at the end-of-central-directory record. X ---------------------------------------------------------------------------*/ X X readbuf(sig, 4); X if (strncmp(sig, END_CENTRAL_SIG, 4)) { /* just to make sure again */ X fprintf(stderr, EndSigMsg); /* didn't find end-of-central-dir sig */ X fprintf(stderr, ReportMsg); /* report to info-zip */ X error_in_archive = 1; /* 1: warning error */ X } X return (error_in_archive); X X} /* end function list_files() */ X X X X X X/*************************************/ X/* Function extract_or_test_files() */ X/*************************************/ X Xint extract_or_test_files() X/* return PK-type error code */ X{ X char **fnamev; X byte *cd_inptr; X int cd_incnt, error, error_in_archive = 0; X UWORD i, j, members_remaining; X longint cd_bufstart, bufstart, inbuf_offset; X struct min_info { X unsigned f_attr; X longint offset; X int lcflag; X } info[DIR_BLKSIZ]; X X X X/*--------------------------------------------------------------------------- X The basic idea of this function is as follows. Since the central di- X rectory lies at the end of the zipfile and the member files lie at the X beginning or middle or wherever, it is not very desirable to simply X read a central directory entry, jump to the member and extract it, and X then jump back to the central directory. In the case of a large zipfile X this would lead to a whole lot of disk-grinding, especially if each mem- X ber file is small. Instead, we read from the central directory the per- X tinent information for a block of files, then go extract/test the whole X block. Thus this routine contains two small(er) loops within a very X large outer loop: the first of the small ones reads a block of files X from the central directory; the second extracts or tests each file; and X the outer one loops over blocks. There's some file-pointer positioning X stuff in between, but that's about it. Btw, it's because of this jump- X ing around that we can afford to be lenient if an error occurs in one of X the member files: we should still be able to go find the other members, X since we know the offset of each from the beginning of the zipfile. X X Begin main loop over blocks of member files. We know the entire central X directory is on this disk: we would not have any of this information un- END_OF_FILE if test 38155 -ne `wc -c <'./v41/unzip.c.1'`; then echo shar: \"'./v41/unzip.c.1'\" unpacked with wrong size! fi # end of './v41/unzip.c.1' fi echo shar: End of archive 1 $of 6$. cp /dev/null ark1isdone MISSING="" for I in 1 2 3 4 5 6 ; do if test ! -f ark${I}isdone ; then MISSING="${MISSING} ${I}" fi done if test "${MISSING}" = "" ; then echo You have unpacked all 6 archives. rm -f ark[1-9]isdone else echo You still must unpack the following archives: echo " " ${MISSING} fi exit 0 exit 0 # Just in case... -- Kent Landfield INTERNET: kent@sparky.IMD.Sterling.COM Sterling Software, IMD UUCP: uunet!sparky!kent Phone: (402) 291-8300 FAX: (402) 291-4362 Please send comp.sources.misc-related mail to kent@uunet.uu.net.