/* Copyright (c) 1990-2001 Info-ZIP. All rights reserved. See the accompanying file LICENSE, version 2000-Apr-09 or later (the contents of which are also included in unzip.h) for terms of use. If, for some reason, all these files are missing, the Info-ZIP license also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html */ /*--------------------------------------------------------------------------- msdos.c MSDOS-specific routines for use with Info-ZIP's UnZip 5.3 and later. Contains: Opendir() (from zip) Readdir() (from zip) do_wild() mapattr() mapname() maskDOSdevice() map2fat() checkdir() isfloppy() z_dos_chmod() volumelabel() (non-djgpp, non-emx) close_outfile() stamp_file() (TIMESTAMP only) dateformat() version() _dos_getcountryinfo() (djgpp 1.x, emx) [_dos_getftime() (djgpp 1.x, emx) to be added] _dos_setftime() (djgpp 1.x, emx) _dos_setfileattr() (djgpp 1.x, emx) _dos_getdrive() (djgpp 1.x, emx) _dos_creat() (djgpp 1.x, emx) _dos_close() (djgpp 1.x, emx) volumelabel() (djgpp, emx) _dos_getcountryinfo() (djgpp 2.x) _is_executable() (djgpp 2.x) __crt0_glob_function() (djgpp 2.x) __crt0_load_environment_file() (djgpp 2.x) screensize() (emx) int86x_realmode() (Watcom 32-bit) stat_bandaid() (Watcom) ---------------------------------------------------------------------------*/ #define UNZIP_INTERNAL #include "unzip.h" static void maskDOSdevice(__GPRO__ char *pathcomp, char *last_dot); #ifdef MAYBE_PLAIN_FAT static void map2fat OF((char *pathcomp, char *last_dot)); #endif static int isfloppy OF((int nDrive)); static int z_dos_chmod OF((__GPRO__ ZCONST char *fname, int attributes)); static int volumelabel OF((char *newlabel)); static int created_dir; /* used by mapname(), checkdir() */ static int renamed_fullpath; /* ditto */ static unsigned nLabelDrive; /* ditto, plus volumelabel() */ /*****************************/ /* Strings used in msdos.c */ /*****************************/ #ifndef SFX static ZCONST char Far CantAllocateWildcard[] = "warning: cannot allocate wildcard buffers\n"; #endif static ZCONST char Far Creating[] = " creating: %s\n"; static ZCONST char Far ConversionFailed[] = "mapname: conversion of %s failed\n"; static ZCONST char Far Labelling[] = "labelling %c: %-22s\n"; static ZCONST char Far ErrSetVolLabel[] = "mapname: error setting volume label\n"; static ZCONST char Far PathTooLong[] = "checkdir error: path too long: %s\n"; static ZCONST char Far CantCreateDir[] = "checkdir error: cannot create %s\n\ unable to process %s.\n"; static ZCONST char Far DirIsntDirectory[] = "checkdir error: %s exists but is not directory\n\ unable to process %s.\n"; static ZCONST char Far PathTooLongTrunc[] = "checkdir warning: path too long; truncating\n %s\n\ -> %s\n"; #if (!defined(SFX) || defined(SFX_EXDIR)) static ZCONST char Far CantCreateExtractDir[] = "checkdir: cannot create extraction directory: %s\n"; #endif static ZCONST char Far AttribsMayBeWrong[] = "\nwarning: file attributes may not be correct\n"; /****************************/ /* Macros used in msdos.c */ /****************************/ #ifdef WATCOMC_386 # define WREGS(v,r) (v##.w.##r) # define int86x int386x static int int86x_realmode(int inter_no, union REGS *in, union REGS *out, struct SREGS *seg); # define F_intdosx(ir,or,sr) int86x_realmode(0x21, ir, or, sr) # define XXX__MK_FP_IS_BROKEN #else # define WREGS(v,r) (v##.x.##r) # define F_intdosx(ir,or,sr) intdosx(ir, or, sr) #endif #if (defined(__GO32__) || defined(__EMX__)) # include /* use readdir() */ # define MKDIR(path,mode) mkdir(path,mode) # define Opendir opendir # define Readdir readdir # define Closedir closedir # define zdirent dirent # define zDIR DIR # ifdef __EMX__ # include # define GETDRIVE(d) d = _getdrive() # define FA_LABEL A_LABEL # else # define GETDRIVE(d) _dos_getdrive(&d) # endif # if defined(_A_SUBDIR) /* MSC dos.h and compatibles */ # define FSUBDIR _A_SUBDIR # elif defined(FA_DIREC) /* Borland dos.h and compatible variants */ # define FSUBDIR FA_DIREC # elif defined(A_DIR) /* EMX dir.h (and dirent.h) */ # define FSUBDIR A_DIR # else /* fallback definition */ # define FSUBDIR 0x10 # endif # if defined(_A_VOLID) /* MSC dos.h and compatibles */ # define FVOLID _A_VOLID # elif defined(FA_LABEL) /* Borland dos.h and compatible variants */ # define FVOLID FA_LABEL # elif defined(A_LABEL) /* EMX dir.h (and dirent.h) */ # define FVOLID A_LABEL # else # define FVOLID 0x08 # endif #else /* !(__GO32__ || __EMX__) */ # define MKDIR(path,mode) mkdir(path) # ifdef __TURBOC__ # define FATTR FA_HIDDEN+FA_SYSTEM+FA_DIREC # define FVOLID FA_LABEL # define FSUBDIR FA_DIREC # define FFIRST(n,d,a) findfirst(n,(struct ffblk *)d,a) # define FNEXT(d) findnext((struct ffblk *)d) # define GETDRIVE(d) d=getdisk()+1 # include # else /* !__TURBOC__ */ # define FATTR _A_HIDDEN+_A_SYSTEM+_A_SUBDIR # define FVOLID _A_VOLID # define FSUBDIR _A_SUBDIR # define FFIRST(n,d,a) _dos_findfirst(n,a,(struct find_t *)d) # define FNEXT(d) _dos_findnext((struct find_t *)d) # define GETDRIVE(d) _dos_getdrive(&d) # include # endif /* ?__TURBOC__ */ typedef struct zdirent { char d_reserved[30]; char d_name[13]; int d_first; } zDIR; zDIR *Opendir OF((const char *)); struct zdirent *Readdir OF((zDIR *)); # define Closedir free #ifndef SFX /**********************/ /* Borland C++ 3.x has its own opendir/readdir */ /* Function Opendir() */ /* library routines, but earlier versions don't, */ /**********************/ /* so use ours regardless */ zDIR *Opendir(name) const char *name; /* name of directory to open */ { zDIR *dirp; /* malloc'd return value */ char *nbuf; /* malloc'd temporary string */ extent len = strlen(name); /* path length to avoid strlens and strcats */ if ((dirp = (zDIR *)malloc(sizeof(zDIR))) == (zDIR *)NULL) return (zDIR *)NULL; if ((nbuf = malloc(len + 6)) == (char *)NULL) { free(dirp); return (zDIR *)NULL; } strcpy(nbuf, name); if (len > 0) { if (nbuf[len-1] == ':') { nbuf[len++] = '.'; } else if (nbuf[len-1] == '/' || nbuf[len-1] == '\\') --len; } strcpy(nbuf+len, "/*.*"); Trace((stderr, "Opendir: nbuf = [%s]\n", nbuf)); if (FFIRST(nbuf, dirp, FATTR)) { free((zvoid *)nbuf); return (zDIR *)NULL; } free((zvoid *)nbuf); dirp->d_first = 1; return dirp; } /**********************/ /* Function Readdir() */ /**********************/ struct zdirent *Readdir(d) zDIR *d; /* directory stream from which to read */ { /* Return pointer to first or next directory entry, or NULL if end. */ if (d->d_first) d->d_first = 0; else if (FNEXT(d)) return (struct zdirent *)NULL; return (struct zdirent *)d; } #endif /* !SFX */ #endif /* ?(__GO32__ || __EMX__) */ #ifndef SFX /************************/ /* Function do_wild() */ /* identical to OS/2 version */ /************************/ char *do_wild(__G__ wildspec) __GDEF ZCONST char *wildspec; /* only used first time on a given dir */ { static zDIR *wild_dir = (zDIR *)NULL; static ZCONST char *wildname; static char *dirname, matchname[FILNAMSIZ]; static int notfirstcall=FALSE, have_dirname, dirnamelen; char *fnamestart; struct zdirent *file; /* Even when we're just returning wildspec, we *always* do so in * matchname[]--calling routine is allowed to append four characters * to the returned string, and wildspec may be a pointer to argv[]. */ if (!notfirstcall) { /* first call: must initialize everything */ notfirstcall = TRUE; if (!iswild(wildspec)) { strcpy(matchname, wildspec); have_dirname = FALSE; wild_dir = NULL; return matchname; } /* break the wildspec into a directory part and a wildcard filename */ if ((wildname = strrchr(wildspec, '/')) == (ZCONST char *)NULL && (wildname = strrchr(wildspec, ':')) == (ZCONST char *)NULL) { dirname = "."; dirnamelen = 1; have_dirname = FALSE; wildname = wildspec; } else { ++wildname; /* point at character after '/' or ':' */ dirnamelen = (int)(wildname - wildspec); if ((dirname = (char *)malloc(dirnamelen+1)) == (char *)NULL) { Info(slide, 1, ((char *)slide, LoadFarString(CantAllocateWildcard))); strcpy(matchname, wildspec); return matchname; /* but maybe filespec was not a wildcard */ } /* GRR: can't strip trailing char for opendir since might be "d:/" or "d:" * (would have to check for "./" at end--let opendir handle it instead) */ strncpy(dirname, wildspec, dirnamelen); dirname[dirnamelen] = '\0'; /* terminate for strcpy below */ have_dirname = TRUE; } Trace((stderr, "do_wild: dirname = [%s]\n", dirname)); if ((wild_dir = Opendir(dirname)) != (zDIR *)NULL) { if (have_dirname) { strcpy(matchname, dirname); fnamestart = matchname + dirnamelen; } else fnamestart = matchname; while ((file = Readdir(wild_dir)) != (struct zdirent *)NULL) { Trace((stderr, "do_wild: readdir returns %s\n", file->d_name)); strcpy(fnamestart, file->d_name); if (strrchr(fnamestart, '.') == (char *)NULL) strcat(fnamestart, "."); if (match(fnamestart, wildname, 1) && /* 1 == ignore case */ /* skip "." and ".." directory entries */ strcmp(fnamestart, ".") && strcmp(fnamestart, "..")) { Trace((stderr, "do_wild: match() succeeds\n")); /* remove trailing dot */ fnamestart += strlen(fnamestart) - 1; if (*fnamestart == '.') *fnamestart = '\0'; return matchname; } } /* if we get to here directory is exhausted, so close it */ Closedir(wild_dir); wild_dir = (zDIR *)NULL; } #ifdef DEBUG else { Trace((stderr, "do_wild: Opendir(%s) returns NULL\n", dirname)); } #endif /* DEBUG */ /* return the raw wildspec in case that works (e.g., directory not * searchable, but filespec was not wild and file is readable) */ strcpy(matchname, wildspec); return matchname; } /* last time through, might have failed opendir but returned raw wildspec */ if (wild_dir == (zDIR *)NULL) { notfirstcall = FALSE; /* nothing left to try--reset for new wildspec */ if (have_dirname) free(dirname); return (char *)NULL; } /* If we've gotten this far, we've read and matched at least one entry * successfully (in a previous call), so dirname has been copied into * matchname already. */ if (have_dirname) { /* strcpy(matchname, dirname); */ fnamestart = matchname + dirnamelen; } else fnamestart = matchname; while ((file = Readdir(wild_dir)) != (struct zdirent *)NULL) { Trace((stderr, "do_wild: readdir returns %s\n", file->d_name)); strcpy(fnamestart, file->d_name); if (strrchr(fnamestart, '.') == (char *)NULL) strcat(fnamestart, "."); if (match(fnamestart, wildname, 1)) { /* 1 == ignore case */ Trace((stderr, "do_wild: match() succeeds\n")); /* remove trailing dot */ fnamestart += strlen(fnamestart) - 1; if (*fnamestart == '.') *fnamestart = '\0'; return matchname; } } Closedir(wild_dir); /* have read at least one entry; nothing left */ wild_dir = (zDIR *)NULL; notfirstcall = FALSE; /* reset for new wildspec */ if (have_dirname) free(dirname); return (char *)NULL; } /* end function do_wild() */ #endif /* !SFX */ /**********************/ /* Function mapattr() */ /**********************/ int mapattr(__G) __GDEF { /* set archive bit for file entries (file is not backed up): */ G.pInfo->file_attr = ((unsigned)G.crec.external_file_attributes | (G.crec.external_file_attributes & FSUBDIR ? 0 : 32)) & 0xff; return 0; } /* end function mapattr() */ /************************/ /* Function mapname() */ /************************/ /* return 0 if no error, 1 if caution (filename */ int mapname(__G__ renamed) /* truncated), 2 if warning (skip file because */ __GDEF /* dir doesn't exist), 3 if error (skip file), */ int renamed; /* or 10 if out of memory (skip file) */ { /* [also IZ_VOL_LABEL, IZ_CREATED_DIR] */ char pathcomp[FILNAMSIZ]; /* path-component buffer */ char *pp, *cp=(char *)NULL; /* character pointers */ char *lastsemi=(char *)NULL; /* pointer to last semi-colon in pathcomp */ #ifdef MAYBE_PLAIN_FAT char *last_dot=(char *)NULL; /* last dot not converted to underscore */ # ifdef USE_LFN int use_lfn = USE_LFN; /* file system supports long filenames? */ # endif #endif int error = 0; register unsigned workch; /* hold the character being tested */ /*--------------------------------------------------------------------------- Initialize various pointers and counters and stuff. ---------------------------------------------------------------------------*/ /* can create path as long as not just freshening, or if user told us */ G.create_dirs = (!uO.fflag || renamed); created_dir = FALSE; /* not yet */ renamed_fullpath = FALSE; if (renamed) { cp = G.filename - 1; /* point to beginning of renamed name... */ while (*++cp) if (*cp == '\\') /* convert backslashes to forward */ *cp = '/'; cp = G.filename; /* use temporary rootpath if user gave full pathname */ if (G.filename[0] == '/') { renamed_fullpath = TRUE; pathcomp[0] = '/'; /* copy the '/' and terminate */ pathcomp[1] = '\0'; ++cp; } else if (isalpha((uch)G.filename[0]) && G.filename[1] == ':') { renamed_fullpath = TRUE; pp = pathcomp; *pp++ = *cp++; /* copy the "d:" (+ '/', possibly) */ *pp++ = *cp++; if (*cp == '/') *pp++ = *cp++; /* otherwise add "./"? */ *pp = '\0'; } } /* pathcomp is ignored unless renamed_fullpath is TRUE: */ if ((error = checkdir(__G__ pathcomp, INIT)) != 0) /* initialize path buf */ return error; /* ...unless no mem or vol label on hard disk */ *pathcomp = '\0'; /* initialize translation buffer */ pp = pathcomp; /* point to translation buffer */ if (!renamed) { /* cp already set if renamed */ if (uO.jflag) /* junking directories */ cp = (char *)strrchr(G.filename, '/'); if (cp == (char *)NULL) /* no '/' or not junking dirs */ cp = G.filename; /* point to internal zipfile-member pathname */ else ++cp; /* point to start of last component of path */ } /*--------------------------------------------------------------------------- Begin main loop through characters in filename. ---------------------------------------------------------------------------*/ while ((workch = (uch)*cp++) != 0) { switch (workch) { case '/': /* can assume -j flag not given */ *pp = '\0'; #ifdef MAYBE_PLAIN_FAT maskDOSdevice(__G__ pathcomp, last_dot); #else maskDOSdevice(__G__ pathcomp, NULL); #endif #ifdef MAYBE_PLAIN_FAT # ifdef USE_LFN if (!use_lfn) # endif { map2fat(pathcomp, last_dot); /* 8.3 trunc. (in place) */ last_dot = (char *)NULL; } #endif if ((error = checkdir(__G__ pathcomp, APPEND_DIR)) > 1) return error; pp = pathcomp; /* reset conversion buffer for next piece */ lastsemi = (char *)NULL; /* leave directory semi-colons alone */ break; /* drive names are not stored in zipfile, so no colons allowed; * no brackets or most other punctuation either (all of which * can appear in Unix-created archives; backslash is particularly * bad unless all necessary directories exist) */ #ifdef MAYBE_PLAIN_FAT case '[': /* these punctuation characters forbidden */ case ']': /* only on plain FAT file systems */ case '+': case ',': case '=': # ifdef USE_LFN if (use_lfn) *pp++ = (char)workch; else *pp++ = '_'; break; # endif #endif case ':': /* special shell characters of command.com */ case '\\': /* (device and directory limiters, wildcard */ case '"': /* characters, stdin/stdout redirection and */ case '<': /* pipe indicators and the quote sign) are */ case '>': /* never allowed in filenames on (V)FAT */ case '|': case '*': case '?': *pp++ = '_'; break; #ifdef MAYBE_PLAIN_FAT case '.': # ifdef USE_LFN if (use_lfn) { *pp++ = (char)workch; break; } # endif if (pp == pathcomp) { /* nothing appended yet... */ if (*cp == '/') { /* don't bother appending "./" to */ ++cp; /* the path: skip behind the '/' */ } else if (*cp == '.' && cp[1] == '/') { /* "../" */ *pp++ = '.'; /* add first dot, */ *pp++ = '.'; /* second dot, and */ ++cp; /* skip over to the '/' */ } else { /* null filename body not allowed */ *pp++ = '_'; /* for FAT, so map .exrc -> _exrc */ } /* (_.exr would keep max 3 chars) */ } else { /* found dot within path component */ last_dot = pp; /* point at last dot so far... */ *pp++ = '_'; /* convert to underscore for now */ } break; #endif /* MAYBE_PLAIN_FAT */ case ';': /* start of VMS version? */ lastsemi = pp; #ifdef MAYBE_PLAIN_FAT # ifdef USE_LFN if (use_lfn) *pp++ = ';'; /* keep for now; remove VMS ";##" later */ # endif #else *pp++ = ';'; /* keep for now; remove VMS ";##" later */ #endif break; #ifdef MAYBE_PLAIN_FAT case ' ': /* change spaces to underscores */ # ifdef USE_LFN if (!use_lfn && uO.sflag) /* only if requested and NO lfn! */ # else if (uO.sflag) /* only if requested */ # endif *pp++ = '_'; else *pp++ = (char)workch; break; #endif /* MAYBE_PLAIN_FAT */ default: /* allow ASCII 255 and European characters in filenames: */ if (isprint(workch) || workch >= 127) *pp++ = (char)workch; } /* end switch */ } /* end while loop */ /*--------------------------------------------------------------------------- Report if directory was created (and no file to create: filename ended in '/'), check name to be sure it exists, and combine path and name be- fore exiting. ---------------------------------------------------------------------------*/ if (G.filename[strlen(G.filename) - 1] == '/') { checkdir(__G__ G.filename, GETPATH); if (created_dir) { if (QCOND2) { Info(slide, 0, ((char *)slide, LoadFarString(Creating), FnFilter1(G.filename))); } /* set file attributes: */ z_dos_chmod(__G__ G.filename, G.pInfo->file_attr); return IZ_CREATED_DIR; /* set dir time (note trailing '/') */ } else if (IS_OVERWRT_ALL) { /* overwrite attributes of existing directory on user's request */ /* set file attributes: */ z_dos_chmod(__G__ G.filename, G.pInfo->file_attr); } return 2; /* dir existed already; don't look for data to extract */ } *pp = '\0'; /* done with pathcomp: terminate it */ /* if not saving them, remove VMS version numbers (appended ";###") */ if (!uO.V_flag && lastsemi) { #ifndef MAYBE_PLAIN_FAT pp = lastsemi + 1; #else # ifdef USE_LFN if (use_lfn) pp = lastsemi + 1; else pp = lastsemi; /* semi-colon was omitted: expect all #'s */ # else pp = lastsemi; /* semi-colon was omitted: expect all #'s */ # endif #endif while (isdigit((uch)(*pp))) ++pp; if (*pp == '\0') /* only digits between ';' and end: nuke */ *lastsemi = '\0'; } #ifdef MAYBE_PLAIN_FAT maskDOSdevice(__G__ pathcomp, last_dot); #else maskDOSdevice(__G__ pathcomp, NULL); #endif if (G.pInfo->vollabel) { if (strlen(pathcomp) > 11) pathcomp[11] = '\0'; } else { #ifdef MAYBE_PLAIN_FAT # ifdef USE_LFN if (!use_lfn) map2fat(pathcomp, last_dot); /* 8.3 truncation (in place) */ # else map2fat(pathcomp, last_dot); /* 8.3 truncation (in place) */ # endif #endif } if (*pathcomp == '\0') { Info(slide, 1, ((char *)slide, LoadFarString(ConversionFailed), FnFilter1(G.filename))); return 3; } checkdir(__G__ pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */ checkdir(__G__ G.filename, GETPATH); if (G.pInfo->vollabel) { /* set the volume label now */ if (QCOND2) Info(slide, 0, ((char *)slide, LoadFarString(Labelling), (nLabelDrive + 'a' - 1), FnFilter1(G.filename))); if (volumelabel(G.filename)) { Info(slide, 1, ((char *)slide, LoadFarString(ErrSetVolLabel))); return 3; } return 2; /* success: skip the "extraction" quietly */ } return error; } /* end function mapname() */ /****************************/ /* Function maskDOSdevice() */ /****************************/ static void maskDOSdevice(__G__ pathcomp, last_dot) __GDEF char *pathcomp, *last_dot; { /*--------------------------------------------------------------------------- Put an underscore in front of the file name if the file name is a DOS/WINDOWS device name like CON.*, AUX.*, PRN.*, etc. Trying to extract such a file would fail at best and wedge us at worst. ---------------------------------------------------------------------------*/ #if !defined(S_IFCHR) && defined(_S_IFCHR) # define S_IFCHR _S_IFCHR #endif #if !defined(S_ISCHR) # if defined(_S_ISCHR) # define S_ISCHR(m) _S_ISCHR(m) # elif defined(S_IFCHR) # define S_ISCHR(m) ((m) & S_IFCHR) # endif #endif #ifdef DEBUG if (stat(pathcomp, &G.statbuf) == 0) { Trace((stderr, "maskDOSdevice() stat(\"%s\", buf) st_mode result: %X, %o\n", pathcomp, G.statbuf.st_mode, G.statbuf.st_mode)); } else { Trace((stderr, "maskDOSdevice() stat(\"%s\", buf) failed\n", pathcomp)); } #endif if (stat(pathcomp, &G.statbuf) == 0 && S_ISCHR(G.statbuf.st_mode)) { extent i; /* pathcomp contains a name of a DOS character device (builtin or * installed device driver). * Prepend a '_' to allow creation of the item in the file system. */ for (i = strlen(pathcomp) + 1; i > 0; --i) pathcomp[i] = pathcomp[i - 1]; pathcomp[0] = '_'; if (last_dot != (char *)NULL) last_dot++; } } /* end function maskDOSdevice() */ #ifdef MAYBE_PLAIN_FAT /**********************/ /* Function map2fat() */ /**********************/ static void map2fat(pathcomp, last_dot) char *pathcomp, *last_dot; { char *pEnd = pathcomp + strlen(pathcomp); /*--------------------------------------------------------------------------- Case 1: filename has no dot, so figure out if we should add one. Note that the algorithm does not try to get too fancy: if there are no dots already, the name either gets truncated at 8 characters or the last un- derscore is converted to a dot (only if more characters are saved that way). In no case is a dot inserted between existing characters. GRR: have problem if filename is volume label?? ---------------------------------------------------------------------------*/ if (last_dot == (char *)NULL) { /* no dots: check for underscores... */ char *plu = strrchr(pathcomp, '_'); /* pointer to last underscore */ if ((plu != (char *)NULL) && /* found underscore: convert to dot? */ (MIN(plu - pathcomp, 8) + MIN(pEnd - plu - 1, 3) > 8)) { last_dot = plu; /* be lazy: drop through to next if-block */ } else if ((pEnd - pathcomp) > 8) /* no underscore; or converting underscore to dot would save less chars than leaving everything in the basename */ pathcomp[8] = '\0'; /* truncate at 8 chars */ /* else whole thing fits into 8 chars or less: no change */ } /*--------------------------------------------------------------------------- Case 2: filename has dot in it, so truncate first half at 8 chars (shift extension if necessary) and second half at three. ---------------------------------------------------------------------------*/ if (last_dot != (char *)NULL) { /* one dot is OK: */ *last_dot = '.'; /* put the last back in */ if ((last_dot - pathcomp) > 8) { char *p, *q; int i; p = last_dot; q = last_dot = pathcomp + 8; for (i = 0; (i < 4) && *p; ++i) /* too many chars in basename: */ *q++ = *p++; /* shift extension left and */ *q = '\0'; /* truncate/terminate it */ } else if ((pEnd - last_dot) > 4) last_dot[4] = '\0'; /* too many chars in extension */ /* else filename is fine as is: no change */ if ((last_dot - pathcomp) > 0 && last_dot[-1] == ' ') last_dot[-1] = '_'; /* NO blank in front of '.'! */ } } /* end function map2fat() */ #endif /* MAYBE_PLAIN_FAT */ /***********************/ /* Function checkdir() */ /***********************/ int checkdir(__G__ pathcomp, flag) __GDEF char *pathcomp; int flag; /* * returns: 1 - (on APPEND_NAME) truncated filename * 2 - path doesn't exist, not allowed to create * 3 - path doesn't exist, tried to create and failed; or * path exists and is not a directory, but is supposed to be * 4 - path is too long * 10 - can't allocate memory for filename buffers */ { static int rootlen = 0; /* length of rootpath */ static char *rootpath; /* user's "extract-to" directory */ static char *buildpath; /* full path (so far) to extracted file */ static char *end; /* pointer to end of buildpath ('\0') */ #ifdef MSC int attrs; /* work around MSC stat() bug */ #endif # define FN_MASK 7 # define FUNCTION (flag & FN_MASK) /*--------------------------------------------------------------------------- APPEND_DIR: append the path component to the path being built and check for its existence. If doesn't exist and we are creating directories, do so for this one; else signal success or error as appropriate. ---------------------------------------------------------------------------*/ if (FUNCTION == APPEND_DIR) { int too_long = FALSE; Trace((stderr, "appending dir segment [%s]\n", pathcomp)); while ((*end = *pathcomp++) != '\0') ++end; /* GRR: could do better check, see if overrunning buffer as we go: * check end-buildpath after each append, set warning variable if * within 20 of FILNAMSIZ; then if var set, do careful check when * appending. Clear variable when begin new path. */ if ((end-buildpath) > FILNAMSIZ-3) /* need '/', one-char name, '\0' */ too_long = TRUE; /* check if extracting directory? */ #ifdef MSC /* MSC 6.00 bug: stat(non-existent-dir) == 0 [exists!] */ if (_dos_getfileattr(buildpath, &attrs) || stat(buildpath, &G.statbuf)) #else if (SSTAT(buildpath, &G.statbuf)) /* path doesn't exist */ #endif { if (!G.create_dirs) { /* told not to create (freshening) */ free(buildpath); return 2; /* path doesn't exist: nothing to do */ } if (too_long) { Info(slide, 1, ((char *)slide, LoadFarString(PathTooLong), FnFilter1(buildpath))); free(buildpath); return 4; /* no room for filenames: fatal */ } if (MKDIR(buildpath, 0777) == -1) { /* create the directory */ Info(slide, 1, ((char *)slide, LoadFarString(CantCreateDir), FnFilter2(buildpath), FnFilter1(G.filename))); free(buildpath); return 3; /* path didn't exist, tried to create, failed */ } created_dir = TRUE; } else if (!S_ISDIR(G.statbuf.st_mode)) { Info(slide, 1, ((char *)slide, LoadFarString(DirIsntDirectory), FnFilter2(buildpath), FnFilter1(G.filename))); free(buildpath); return 3; /* path existed but wasn't dir */ } if (too_long) { Info(slide, 1, ((char *)slide, LoadFarString(PathTooLong), FnFilter1(buildpath))); free(buildpath); return 4; /* no room for filenames: fatal */ } *end++ = '/'; *end = '\0'; Trace((stderr, "buildpath now = [%s]\n", FnFilter1(buildpath))); return 0; } /* end if (FUNCTION == APPEND_DIR) */ /*--------------------------------------------------------------------------- GETPATH: copy full path to the string pointed at by pathcomp, and free buildpath. ---------------------------------------------------------------------------*/ if (FUNCTION == GETPATH) { strcpy(pathcomp, buildpath); Trace((stderr, "getting and freeing path [%s]\n", FnFilter1(pathcomp))); free(buildpath); buildpath = end = (char *)NULL; return 0; } /*--------------------------------------------------------------------------- APPEND_NAME: assume the path component is the filename; append it and return without checking for existence. ---------------------------------------------------------------------------*/ if (FUNCTION == APPEND_NAME) { #ifdef NOVELL_BUG_WORKAROUND if (end == buildpath && !G.pInfo->vollabel) { /* work-around for Novell's "overwriting executables" bug: prepend "./" to name when no path component is specified */ *end++ = '.'; *end++ = '/'; } #endif /* NOVELL_BUG_WORKAROUND */ Trace((stderr, "appending filename [%s]\n", FnFilter1(pathcomp))); while ((*end = *pathcomp++) != '\0') { ++end; if ((end-buildpath) >= FILNAMSIZ) { *--end = '\0'; Info(slide, 1, ((char *)slide, LoadFarString(PathTooLongTrunc), FnFilter1(G.filename), FnFilter2(buildpath))); return 1; /* filename truncated */ } } Trace((stderr, "buildpath now = [%s]\n", FnFilter1(buildpath))); return 0; /* could check for existence here, prompt for new name... */ } /*--------------------------------------------------------------------------- INIT: allocate and initialize buffer space for the file currently being extracted. If file was renamed with an absolute path, don't prepend the extract-to path. ---------------------------------------------------------------------------*/ if (FUNCTION == INIT) { Trace((stderr, "initializing buildpath to ")); /* allocate space for full filename, root path, and maybe "./" */ if ((buildpath = (char *)malloc(strlen(G.filename)+rootlen+3)) == (char *)NULL) return 10; if (G.pInfo->vollabel) { /* GRR: for network drives, do strchr() and return IZ_VOL_LABEL if not [1] */ if (renamed_fullpath && pathcomp[1] == ':') *buildpath = (char)ToLower(*pathcomp); else if (!renamed_fullpath && rootlen > 1 && rootpath[1] == ':') *buildpath = (char)ToLower(*rootpath); else { GETDRIVE(nLabelDrive); /* assumed that a == 1, b == 2, etc. */ *buildpath = (char)(nLabelDrive - 1 + 'a'); } nLabelDrive = *buildpath - 'a' + 1; /* save for mapname() */ if (uO.volflag == 0 || *buildpath < 'a' || /* no label/bogus disk */ (uO.volflag == 1 && !isfloppy(nLabelDrive))) /* -$: no fixed */ { free(buildpath); return IZ_VOL_LABEL; /* skipping with message */ } *buildpath = '\0'; end = buildpath; } else if (renamed_fullpath) { /* pathcomp = valid data */ end = buildpath; while ((*end = *pathcomp++) != '\0') ++end; } else if (rootlen > 0) { strcpy(buildpath, rootpath); end = buildpath + rootlen; } else { *buildpath = '\0'; end = buildpath; } Trace((stderr, "[%s]\n", FnFilter1(buildpath))); return 0; } /*--------------------------------------------------------------------------- ROOT: if appropriate, store the path in rootpath and create it if neces- sary; else assume it's a zipfile member and return. This path segment gets used in extracting all members from every zipfile specified on the command line. Note that under OS/2 and MS-DOS, if a candidate extract-to directory specification includes a drive letter (leading "x:"), it is treated just as if it had a trailing '/'--that is, one directory level will be created if the path doesn't exist, unless this is otherwise pro- hibited (e.g., freshening). ---------------------------------------------------------------------------*/ #if (!defined(SFX) || defined(SFX_EXDIR)) if (FUNCTION == ROOT) { Trace((stderr, "initializing root path to [%s]\n", FnFilter1(pathcomp))); if (pathcomp == (char *)NULL) { rootlen = 0; return 0; } if (rootlen > 0) /* rootpath was already set, nothing to do */ return 0; if ((rootlen = strlen(pathcomp)) > 0) { int had_trailing_pathsep=FALSE, has_drive=FALSE, add_dot=FALSE; char *tmproot; if ((tmproot = (char *)malloc(rootlen+3)) == (char *)NULL) { rootlen = 0; return 10; } strcpy(tmproot, pathcomp); if (isalpha((uch)tmproot[0]) && tmproot[1] == ':') has_drive = TRUE; /* drive designator */ if (tmproot[rootlen-1] == '/' || tmproot[rootlen-1] == '\\') { tmproot[--rootlen] = '\0'; had_trailing_pathsep = TRUE; } if (has_drive && (rootlen == 2)) { if (!had_trailing_pathsep) /* i.e., original wasn't "x:/" */ add_dot = TRUE; /* relative path: add '.' before '/' */ } else if (rootlen > 0) { /* need not check "x:." and "x:/" */ #ifdef MSC /* MSC 6.00 bug: stat(non-existent-dir) == 0 [exists!] */ if (_dos_getfileattr(tmproot, &attrs) || SSTAT(tmproot, &G.statbuf) || !S_ISDIR(G.statbuf.st_mode)) #else if (SSTAT(tmproot, &G.statbuf) || !S_ISDIR(G.statbuf.st_mode)) #endif { /* path does not exist */ if (!G.create_dirs /* || iswild(tmproot) */ ) { free(tmproot); rootlen = 0; return 2; /* treat as stored file */ } /* GRR: scan for wildcard characters? OS-dependent... if find any, return 2: * treat as stored file(s) */ /* create directory (could add loop here scanning tmproot * to create more than one level, but really necessary?) */ if (MKDIR(tmproot, 0777) == -1) { Info(slide, 1, ((char *)slide, LoadFarString(CantCreateExtractDir), FnFilter1(tmproot))); free(tmproot); rootlen = 0; /* path didn't exist, tried to create, */ return 3; /* failed: file exists, or need 2+ levels */ } } } if (add_dot) /* had just "x:", make "x:." */ tmproot[rootlen++] = '.'; tmproot[rootlen++] = '/'; tmproot[rootlen] = '\0'; if ((rootpath = (char *)realloc(tmproot, rootlen+1)) == NULL) { free(tmproot); rootlen = 0; return 10; } Trace((stderr, "rootpath now = [%s]\n", FnFilter1(rootpath))); } return 0; } #endif /* !SFX || SFX_EXDIR */ /*--------------------------------------------------------------------------- END: free rootpath, immediately prior to program exit. ---------------------------------------------------------------------------*/ if (FUNCTION == END) { Trace((stderr, "freeing rootpath\n")); if (rootlen > 0) { free(rootpath); rootlen = 0; } return 0; } return 99; /* should never reach */ } /* end function checkdir() */ /***********************/ /* Function isfloppy() */ /***********************/ static int isfloppy(nDrive) /* more precisely, is it removable? */ int nDrive; { union REGS regs; regs.h.ah = 0x44; regs.h.al = 0x08; regs.h.bl = (uch)nDrive; #ifdef __EMX__ _int86(0x21, ®s, ®s); if (WREGS(regs,flags) & 1) #else intdos(®s, ®s); if (WREGS(regs,cflag)) /* error: do default a/b check instead */ #endif { Trace((stderr, "error in DOS function 0x44 (AX = 0x%04x): guessing instead...\n", WREGS(regs,ax))); return (nDrive == 1 || nDrive == 2)? TRUE : FALSE; } else return WREGS(regs,ax)? FALSE : TRUE; } /**************************/ /* Function z_dos_chmod() */ /**************************/ static int z_dos_chmod(__G__ fname, attributes) __GDEF ZCONST char *fname; int attributes; { char *name; unsigned fnamelength; int errv; /* set file attributes: The DOS `chmod' system call requires to mask out the directory and volume_label attribute bits. And, a trailing '/' has to be removed from the directory name, the DOS `chmod' system call does not accept it. */ fnamelength = strlen(fname); if (fnamelength > 1 && fname[fnamelength-1] == '/' && fname[fnamelength-2] != ':' && (name = (char *)malloc(fnamelength)) != (char *)NULL) { strncpy(name, fname, fnamelength-1); name[fnamelength-1] = '\0'; } else { name = (char *)fname; fnamelength = 0; } #if defined(__TURBOC__) || (defined(__DJGPP__) && (__DJGPP__ >= 2)) # if (defined(__BORLANDC__) && (__BORLANDC__ >= 0x0452)) # define Chmod _rtl_chmod # else # define Chmod _chmod # endif errv = (Chmod(name, 1, attributes & (~FSUBDIR & ~FVOLID)) != (attributes & (~FSUBDIR & ~FVOLID))); # undef Chmod #else /* !(__TURBOC__ || (__DJGPP__ && __DJGPP__ >= 2)) */ errv = (_dos_setfileattr(name, attributes & (~FSUBDIR & ~FVOLID)) != 0); #endif /* ?(__TURBOC__ || (__DJGPP__ && __DJGPP__ >= 2)) */ if (errv) Info(slide, 1, ((char *)slide, LoadFarString(AttribsMayBeWrong))); if (fnamelength > 0) free(name); return errv; } /* end function z_dos_chmod() */ #if (!defined(__GO32__) && !defined(__EMX__)) typedef struct dosfcb { uch flag; /* ff to indicate extended FCB */ char res[5]; /* reserved */ uch vattr; /* attribute */ uch drive; /* drive (1=A, 2=B, ...) */ uch vn[11]; /* file or volume name */ char dmmy[5]; uch nn[11]; /* holds new name if renaming (else reserved) */ char dmmy2[9]; } dos_fcb; /**************************/ /* Function volumelabel() */ /**************************/ static int volumelabel(newlabel) char *newlabel; { #ifdef DEBUG char *p; #endif int len = strlen(newlabel); int fcbseg, dtaseg, fcboff, dtaoff, retv; dos_fcb fcb, dta, far *pfcb=&fcb, far *pdta=&dta; struct SREGS sregs; union REGS regs; /*--------------------------------------------------------------------------- Label the diskette specified by nLabelDrive using FCB calls. (Old ver- sions of MS-DOS and OS/2 DOS boxes can't use DOS function 3Ch to create labels.) Must use far pointers for MSC FP_* macros to work; must pad FCB filenames with spaces; and cannot include dot in 8th position. May or may not need to zero out FCBs before using; do so just in case. ---------------------------------------------------------------------------*/ #ifdef WATCOMC_386 int truseg; memset(&sregs, 0, sizeof(sregs)); memset(®s, 0, sizeof(regs)); /* PMODE/W does not support extended versions of any dos FCB functions, */ /* so we have to use brute force, allocating real mode memory for them. */ regs.w.ax = 0x0100; regs.w.bx = (2 * sizeof(dos_fcb) + 15) >> 4; /* size in paragraphs */ int386(0x31, ®s, ®s); /* DPMI allocate DOS memory */ if (regs.w.cflag) return DF_MDY; /* no memory, return default */ truseg = regs.w.dx; /* protected mode selector */ dtaseg = regs.w.ax; /* real mode paragraph */ fcboff = 0; dtaoff = sizeof(dos_fcb); #ifdef XXX__MK_FP_IS_BROKEN /* XXX This code may not be trustworthy in general, though it is */ /* valid with DOS/4GW and PMODE/w, which is all we support for now. */ regs.w.ax = 6; regs.w.bx = truseg; int386(0x31, ®s, ®s); /* convert seg to linear address */ pfcb = (dos_fcb far *) (((ulg) regs.w.cx << 16) | regs.w.dx); /* pfcb = (dos_fcb far *) ((ulg) dtaseg << 4); */ pdta = pfcb + 1; #else pfcb = MK_FP(truseg, fcboff); pdta = MK_FP(truseg, dtaoff); #endif _fmemset((char far *)pfcb, 0, 2 * sizeof(dos_fcb)); /* we pass the REAL MODE paragraph to the dos interrupts: */ fcbseg = dtaseg; #else /* !WATCOMC_386 */ memset((char *)&dta, 0, sizeof(dos_fcb)); memset((char *)&fcb, 0, sizeof(dos_fcb)); fcbseg = FP_SEG(pfcb); fcboff = FP_OFF(pfcb); dtaseg = FP_SEG(pdta); dtaoff = FP_OFF(pdta); #endif /* ?WATCOMC_386 */ #ifdef DEBUG for (p = (char *)&dta; (p - (char *)&dta) < sizeof(dos_fcb); ++p) if (*p) fprintf(stderr, "error: dta[%d] = %x\n", (p - (char *)&dta), *p); for (p = (char *)&fcb; (p - (char *)&fcb) < sizeof(dos_fcb); ++p) if (*p) fprintf(stderr, "error: fcb[%d] = %x\n", (p - (char *)&fcb), *p); printf("testing pointer macros:\n"); segread(&sregs); printf("cs = %x, ds = %x, es = %x, ss = %x\n", sregs.cs, sregs.ds, sregs.es, sregs.ss); #endif /* DEBUG */ #if 0 #ifdef __TURBOC__ bdosptr(0x1a, dta, DO_NOT_CARE); #else (intdosx method below) #endif #endif /* 0 */ /* set the disk transfer address for subsequent FCB calls */ sregs.ds = dtaseg; WREGS(regs,dx) = dtaoff; Trace((stderr, "segment:offset of pdta = %x:%x\n", dtaseg, dtaoff)); Trace((stderr, "&dta = %lx, pdta = %lx\n", (ulg)&dta, (ulg)pdta)); regs.h.ah = 0x1a; F_intdosx(®s, ®s, &sregs); /* fill in the FCB */ sregs.ds = fcbseg; WREGS(regs,dx) = fcboff; pfcb->flag = 0xff; /* extended FCB */ pfcb->vattr = 0x08; /* attribute: disk volume label */ pfcb->drive = (uch)nLabelDrive; #ifdef DEBUG Trace((stderr, "segment:offset of pfcb = %x:%x\n", sregs.ds, WREGS(regs,dx))); Trace((stderr, "&fcb = %lx, pfcb = %lx\n", (ulg)&fcb, (ulg)pfcb)); Trace((stderr, "(2nd check: labelling drive %c:)\n", pfcb->drive-1+'A')); if (pfcb->flag != fcb.flag) fprintf(stderr, "error: pfcb->flag = %d, fcb.flag = %d\n", pfcb->flag, fcb.flag); if (pfcb->drive != fcb.drive) fprintf(stderr, "error: pfcb->drive = %d, fcb.drive = %d\n", pfcb->drive, fcb.drive); if (pfcb->vattr != fcb.vattr) fprintf(stderr, "error: pfcb->vattr = %d, fcb.vattr = %d\n", pfcb->vattr, fcb.vattr); #endif /* DEBUG */ /* check for existing label */ Trace((stderr, "searching for existing label via FCBs\n")); regs.h.ah = 0x11; /* FCB find first */ #ifdef WATCOMC_386 _fstrncpy((char far *)&pfcb->vn, "???????????", 11); #else strncpy((char *)fcb.vn, "???????????", 11); /* i.e., "*.*" */ #endif /* ?WATCOMC_386 */ Trace((stderr, "fcb.vn = %lx\n", (ulg)fcb.vn)); Trace((stderr, "regs.h.ah = %x, regs.x.dx = %04x, sregs.ds = %04x\n", regs.h.ah, WREGS(regs,dx), sregs.ds)); Trace((stderr, "flag = %x, drive = %d, vattr = %x, vn = %s = %s.\n", fcb.flag, fcb.drive, fcb.vattr, fcb.vn, pfcb->vn)); F_intdosx(®s, ®s, &sregs); /*--------------------------------------------------------------------------- If not previously labelled, write a new label. Otherwise just rename, since MS-DOS 2.x has a bug that damages the FAT when the old label is deleted. ---------------------------------------------------------------------------*/ if (regs.h.al) { Trace((stderr, "no label found\n\n")); regs.h.ah = 0x16; /* FCB create file */ #ifdef WATCOMC_386 _fstrncpy((char far *)pfcb->vn, newlabel, len); if (len < 11) _fstrncpy((char far *)(pfcb->vn+len), " ", 11-len); #else strncpy((char *)fcb.vn, newlabel, len); if (len < 11) /* fill with spaces */ strncpy((char *)(fcb.vn+len), " ", 11-len); #endif Trace((stderr, "fcb.vn = %lx pfcb->vn = %lx\n", (ulg)fcb.vn, (ulg)pfcb->vn)); Trace((stderr, "flag = %x, drive = %d, vattr = %x\n", fcb.flag, fcb.drive, fcb.vattr)); Trace((stderr, "vn = %s = %s.\n", fcb.vn, pfcb->vn)); F_intdosx(®s, ®s, &sregs); regs.h.ah = 0x10; /* FCB close file */ if (regs.h.al) { Trace((stderr, "unable to write volume name (AL = %x)\n", regs.h.al)); F_intdosx(®s, ®s, &sregs); retv = 1; } else { F_intdosx(®s, ®s, &sregs); Trace((stderr, "new volume label [%s] written\n", newlabel)); retv = 0; } } else { Trace((stderr, "found old label [%s]\n\n", dta.vn)); /* not term. */ regs.h.ah = 0x17; /* FCB rename */ #ifdef WATCOMC_386 _fstrncpy((char far *)pfcb->vn, (char far *)pdta->vn, 11); _fstrncpy((char far *)pfcb->nn, newlabel, len); if (len < 11) _fstrncpy((char far *)(pfcb->nn+len), " ", 11-len); #else strncpy((char *)fcb.vn, (char *)dta.vn, 11); strncpy((char *)fcb.nn, newlabel, len); if (len < 11) /* fill with spaces */ strncpy((char *)(fcb.nn+len), " ", 11-len); #endif Trace((stderr, "fcb.vn = %lx pfcb->vn = %lx\n", (ulg)fcb.vn, (ulg)pfcb->vn)); Trace((stderr, "fcb.nn = %lx pfcb->nn = %lx\n", (ulg)fcb.nn, (ulg)pfcb->nn)); Trace((stderr, "flag = %x, drive = %d, vattr = %x\n", fcb.flag, fcb.drive, fcb.vattr)); Trace((stderr, "vn = %s = %s.\n", fcb.vn, pfcb->vn)); Trace((stderr, "nn = %s = %s.\n", fcb.nn, pfcb->nn)); F_intdosx(®s, ®s, &sregs); if (regs.h.al) { Trace((stderr, "Unable to change volume name (AL = %x)\n", regs.h.al)); retv = 1; } else { Trace((stderr, "volume label changed to [%s]\n", newlabel)); retv = 0; } } #ifdef WATCOMC_386 regs.w.ax = 0x0101; /* free dos memory */ regs.w.dx = truseg; int386(0x31, ®s, ®s); #endif return retv; } /* end function volumelabel() */ #endif /* !__GO32__ && !__EMX__ */ #if (defined(USE_EF_UT_TIME) || defined(TIMESTAMP)) /* The following DOS date/time structure is machine-dependent as it * assumes "little-endian" byte order. For MSDOS-specific code, which * is run on ix86 CPUs (or emulators), this assumption is valid; but * care should be taken when using this code as template for other ports. */ typedef union { ulg z_dostime; # ifdef __TURBOC__ struct ftime ft; /* system file time record */ # endif struct { /* date and time words */ ush ztime; /* DOS file modification time word */ ush zdate; /* DOS file modification date word */ } zft; struct { /* DOS date/time components bitfield */ unsigned zt_se : 5; unsigned zt_mi : 6; unsigned zt_hr : 5; unsigned zd_dy : 5; unsigned zd_mo : 4; unsigned zd_yr : 7; } z_dtf; } dos_fdatetime; #endif /* USE_EF_UT_TIME || TIMESTAMP */ /****************************/ /* Function close_outfile() */ /****************************/ void close_outfile(__G) __GDEF /* * MS-DOS VERSION * * Set the output file date/time stamp according to information from the * zipfile directory record for this member, then close the file and set * its permissions (archive, hidden, read-only, system). Aside from closing * the file, this routine is optional (but most compilers support it). */ { #ifdef USE_EF_UT_TIME dos_fdatetime dos_dt; iztimes z_utime; struct tm *t; #endif /* USE_EF_UT_TIME */ /*--------------------------------------------------------------------------- Copy and/or convert time and date variables, if necessary; then set the file time/date. WEIRD BORLAND "BUG": if output is buffered, and if run under at least some versions of DOS (e.g., 6.0), and if files are smaller than DOS physical block size (i.e., 512 bytes) (?), then files MAY NOT get timestamped correctly--apparently setftime() occurs before any data are written to the file, and when file is closed and buffers are flushed, timestamp is overwritten with current time. Even with a 32K buffer, this does not seem to occur with larger files. UnZip output is now unbuffered, but if it were not, could still avoid problem by adding "fflush(outfile)" just before setftime() call. Weird, huh? ---------------------------------------------------------------------------*/ #ifdef USE_EF_UT_TIME if (G.extra_field && #ifdef IZ_CHECK_TZ G.tz_is_valid && #endif (ef_scan_for_izux(G.extra_field, G.lrec.extra_field_length, 0, G.lrec.last_mod_dos_datetime, &z_utime, NULL) & EB_UT_FL_MTIME)) { TTrace((stderr, "close_outfile: Unix e.f. modif. time = %ld\n", z_utime.mtime)); /* round up (down if "up" overflows) to even seconds */ if (z_utime.mtime & 1) z_utime.mtime = (z_utime.mtime + 1 > z_utime.mtime) ? z_utime.mtime + 1 : z_utime.mtime - 1; TIMET_TO_NATIVE(z_utime.mtime) /* NOP unless MSC 7.0 or Macintosh */ t = localtime(&(z_utime.mtime)); } else t = (struct tm *)NULL; if (t != (struct tm *)NULL) { if (t->tm_year < 80) { dos_dt.z_dtf.zt_se = 0; dos_dt.z_dtf.zt_mi = 0; dos_dt.z_dtf.zt_hr = 0; dos_dt.z_dtf.zd_dy = 1; dos_dt.z_dtf.zd_mo = 1; dos_dt.z_dtf.zd_yr = 0; } else { dos_dt.z_dtf.zt_se = t->tm_sec >> 1; dos_dt.z_dtf.zt_mi = t->tm_min; dos_dt.z_dtf.zt_hr = t->tm_hour; dos_dt.z_dtf.zd_dy = t->tm_mday; dos_dt.z_dtf.zd_mo = t->tm_mon + 1; dos_dt.z_dtf.zd_yr = t->tm_year - 80; } } else { dos_dt.z_dostime = G.lrec.last_mod_dos_datetime; } # ifdef __TURBOC__ setftime(fileno(G.outfile), &dos_dt.ft); # else _dos_setftime(fileno(G.outfile), dos_dt.zft.zdate, dos_dt.zft.ztime); # endif #else /* !USE_EF_UT_TIME */ # ifdef __TURBOC__ setftime(fileno(G.outfile), (struct ftime *)(&(G.lrec.last_mod_dos_datetime))); # else _dos_setftime(fileno(G.outfile), (ush)(G.lrec.last_mod_dos_datetime >> 16), (ush)(G.lrec.last_mod_dos_datetime)); # endif #endif /* ?USE_EF_UT_TIME */ /*--------------------------------------------------------------------------- And finally we can close the file...at least everybody agrees on how to do *this*. I think... Also change the mode according to the stored file attributes, since we didn't do that when we opened the dude. ---------------------------------------------------------------------------*/ fclose(G.outfile); z_dos_chmod(__G__ G.filename, G.pInfo->file_attr); } /* end function close_outfile() */ #ifdef TIMESTAMP /*************************/ /* Function stamp_file() */ /*************************/ int stamp_file(fname, modtime) ZCONST char *fname; time_t modtime; { dos_fdatetime dos_dt; time_t t_even; struct tm *t; int fd; /* file handle */ /* round up (down if "up" overflows) to even seconds */ t_even = ((modtime + 1 > modtime) ? modtime + 1 : modtime) & (~1); TIMET_TO_NATIVE(t_even) /* NOP unless MSC 7.0 or Macintosh */ t = localtime(&t_even); if (t == (struct tm *)NULL) return -1; /* time conversion error */ if (t->tm_year < 80) { dos_dt.z_dtf.zt_se = 0; dos_dt.z_dtf.zt_mi = 0; dos_dt.z_dtf.zt_hr = 0; dos_dt.z_dtf.zd_dy = 1; dos_dt.z_dtf.zd_mo = 1; dos_dt.z_dtf.zd_yr = 0; } else { dos_dt.z_dtf.zt_se = t->tm_sec >> 1; dos_dt.z_dtf.zt_mi = t->tm_min; dos_dt.z_dtf.zt_hr = t->tm_hour; dos_dt.z_dtf.zd_dy = t->tm_mday; dos_dt.z_dtf.zd_mo = t->tm_mon + 1; dos_dt.z_dtf.zd_yr = t->tm_year - 80; } if (((fd = open((char *)fname, 0)) == -1) || # ifdef __TURBOC__ (setftime(fd, &dos_dt.ft))) # else (_dos_setftime(fd, dos_dt.zft.zdate, dos_dt.zft.ztime))) # endif { if (fd != -1) close(fd); return -1; } close(fd); return 0; } /* end function stamp_file() */ #endif /* TIMESTAMP */ #ifndef SFX /*************************/ /* Function dateformat() */ /*************************/ int dateformat() { /*--------------------------------------------------------------------------- For those operating systems that support it, this function returns a value that tells how national convention says that numeric dates are displayed. Return values are DF_YMD, DF_DMY and DF_MDY (the meanings should be fairly obvious). ---------------------------------------------------------------------------*/ #ifndef WINDLL ush CountryInfo[18]; #if (!defined(__GO32__) && !defined(__EMX__)) ush far *_CountryInfo = CountryInfo; struct SREGS sregs; union REGS regs; #ifdef WATCOMC_386 ush seg, para; memset(&sregs, 0, sizeof(sregs)); memset(®s, 0, sizeof(regs)); /* PMODE/W does not support an extended version of dos function 38, */ /* so we have to use brute force, allocating real mode memory for it. */ regs.w.ax = 0x0100; regs.w.bx = 3; /* 36 bytes rounds up to 48 */ int386(0x31, ®s, ®s); /* DPMI allocate DOS memory */ if (regs.w.cflag) return DF_MDY; /* no memory, return default */ seg = regs.w.dx; para = regs.w.ax; #ifdef XXX__MK_FP_IS_BROKEN /* XXX This code may not be trustworthy in general, though it is * valid with DOS/4GW and PMODE/w, which is all we support for now. */ /* _CountryInfo = (ush far *) (para << 4); */ /* works for some extenders */ regs.w.ax = 6; regs.w.bx = seg; int386(0x31, ®s, ®s); /* convert seg to linear address */ _CountryInfo = (ush far *) (((ulg) regs.w.cx << 16) | regs.w.dx); #else _CountryInfo = (ush far *) MK_FP(seg, 0); #endif sregs.ds = para; /* real mode paragraph */ regs.w.dx = 0; /* no offset from segment */ regs.w.ax = 0x3800; int86x_realmode(0x21, ®s, ®s, &sregs); CountryInfo[0] = regs.w.cflag ? 0 : _CountryInfo[0]; regs.w.ax = 0x0101; regs.w.dx = seg; int386(0x31, ®s, ®s); /* DPMI free DOS memory */ #else /* !WATCOMC_386 */ sregs.ds = FP_SEG(_CountryInfo); regs.x.dx = FP_OFF(_CountryInfo); regs.x.ax = 0x3800; intdosx(®s, ®s, &sregs); #endif /* ?WATCOMC_386 */ #else /* __GO32__ || __EMX__ */ _dos_getcountryinfo(CountryInfo); #endif /* ?(__GO32__ || __EMX__) */ switch(CountryInfo[0]) { case 0: return DF_MDY; case 1: return DF_DMY; case 2: return DF_YMD; } #endif /* !WINDLL && !WATCOMC_386 */ return DF_MDY; /* default for systems without locale info */ } /* end function dateformat() */ #ifndef WINDLL /************************/ /* Function version() */ /************************/ void version(__G) __GDEF { int len; #if defined(__DJGPP__) || defined(__WATCOMC__) || \ (defined(_MSC_VER) && (_MSC_VER != 800)) char buf[80]; #endif len = sprintf((char *)slide, LoadFarString(CompiledWith), #if defined(__GNUC__) # if defined(__DJGPP__) (sprintf(buf, "djgpp v%d.%02d / gcc ", __DJGPP__, __DJGPP_MINOR__), buf), # elif defined(__GO32__) /* __GO32__ is defined as "1" only (sigh) */ "djgpp v1.x / gcc ", # elif defined(__EMX__) /* ...so is __EMX__ (double sigh) */ "emx+gcc ", # else "gcc ", # endif __VERSION__, #elif defined(__WATCOMC__) # if (__WATCOMC__ % 10 != 0) "Watcom C/C++", (sprintf(buf, " %d.%02d", __WATCOMC__ / 100, __WATCOMC__ % 100), buf), # else "Watcom C/C++", (sprintf(buf, " %d.%d", __WATCOMC__ / 100, (__WATCOMC__ % 100) / 10), buf), # endif #elif defined(__TURBOC__) # ifdef __BORLANDC__ "Borland C++", # if (__BORLANDC__ < 0x0200) " 1.0", # elif (__BORLANDC__ == 0x0200) /* James: __TURBOC__ = 0x0297 */ " 2.0", # elif (__BORLANDC__ == 0x0400) " 3.0", # elif (__BORLANDC__ == 0x0410) /* __BCPLUSPLUS__ = 0x0310 */ " 3.1", # elif (__BORLANDC__ == 0x0452) /* __BCPLUSPLUS__ = 0x0320 */ " 4.0 or 4.02", # elif (__BORLANDC__ == 0x0460) /* __BCPLUSPLUS__ = 0x0340 */ " 4.5", # elif (__BORLANDC__ == 0x0500) " 5.0", # else " later than 5.0", # endif # else "Turbo C", # if (__TURBOC__ > 0x0401) /* Kevin: 3.0 -> 0x0401 */ "++ later than 3.0", # elif (__TURBOC__ >= 0x0400) "++ 3.0", # elif (__TURBOC__ >= 0x0297) /* see remark for Borland C++ 2.0 */ "++ 2.0", # elif (__TURBOC__ == 0x0296) /* [662] checked by SPC */ "++ 1.01", # elif (__TURBOC__ == 0x0295) /* [661] vfy'd by Kevin */ "++ 1.0", # elif (__TURBOC__ == 0x0201) /* Brian: 2.01 -> 0x0201 */ " 2.01", # elif ((__TURBOC__ >= 0x018d) && (__TURBOC__ <= 0x0200)) /* James: 0x0200 */ " 2.0", # elif (__TURBOC__ > 0x0100) " 1.5", /* James: 0x0105? */ # else " 1.0", /* James: 0x0100 */ # endif # endif #elif defined(MSC) # if defined(_QC) && !defined(_MSC_VER) "MS Quick C ", "2.0 or earlier", /* _QC is defined as 1 */ # elif defined(_QC) && (_MSC_VER == 600) "MS Quick C ", "2.5 (MSC 6.00)", # else "Microsoft C ", # ifdef _MSC_VER # if (_MSC_VER == 800) "8.0/8.0c (Visual C++ 1.0/1.5)", # else (sprintf(buf, "%d.%02d", _MSC_VER/100, _MSC_VER%100), buf), # endif # else "5.1 or earlier", # endif # endif #else "unknown compiler", "", #endif /* ?compilers */ "\nMS-DOS", #if (defined(__GNUC__) || defined(WATCOMC_386)) " (32-bit)", #else # if defined(M_I86HM) || defined(__HUGE__) " (16-bit, huge)", # elif defined(M_I86LM) || defined(__LARGE__) " (16-bit, large)", # elif defined(M_I86MM) || defined(__MEDIUM__) " (16-bit, medium)", # elif defined(M_I86CM) || defined(__COMPACT__) " (16-bit, compact)", # elif defined(M_I86SM) || defined(__SMALL__) " (16-bit, small)", # elif defined(M_I86TM) || defined(__TINY__) " (16-bit, tiny)", # else " (16-bit)", # endif #endif #ifdef __DATE__ " on ", __DATE__ #else "", "" #endif ); (*G.message)((zvoid *)&G, slide, (ulg)len, 0); /* MSC can't handle huge macro expansion */ /* temporary debugging code for Borland compilers only */ #if (defined(__TURBOC__) && defined(DEBUG)) Info(slide, 0, ((char *)slide, "\tdebug(__TURBOC__ = 0x%04x = %d)\n", __TURBOC__, __TURBOC__)); #ifdef __BORLANDC__ Info(slide, 0, ((char *)slide, "\tdebug(__BORLANDC__ = 0x%04x)\n", __BORLANDC__)); #else Info(slide, 0, ((char *)slide, "\tdebug(__BORLANDC__ not defined)\n")); #endif #ifdef __TCPLUSPLUS__ Info(slide, 0, ((char *)slide, "\tdebug(__TCPLUSPLUS__ = 0x%04x)\n", __TCPLUSPLUS__)); #else Info(slide, 0, ((char *)slide, "\tdebug(__TCPLUSPLUS__ not defined)\n")); #endif #ifdef __BCPLUSPLUS__ Info(slide, 0, ((char *)slide, "\tdebug(__BCPLUSPLUS__ = 0x%04x)\n\n", __BCPLUSPLUS__)); #else Info(slide, 0, ((char *)slide, "\tdebug(__BCPLUSPLUS__ not defined)\n\n")); #endif #endif /* __TURBOC__ && DEBUG */ } /* end function version() */ #endif /* !WINDLL */ #endif /* !SFX */ #if (defined(__GO32__) || defined(__EMX__)) #if (!defined(__DJGPP__) || (__DJGPP__ < 2) || \ ((__DJGPP__ == 2) && (__DJGPP_MINOR__ < 2))) int volatile _doserrno; #endif /* not "djgpp v2.02 or newer" */ #if (!defined(__DJGPP__) || (__DJGPP__ < 2)) unsigned _dos_getcountryinfo(void *countrybuffer) { asm("movl %0, %%edx": : "g" (countrybuffer)); asm("movl $0x3800, %eax"); asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"); _doserrno = 0; asm("jnc 1f"); asm("movl %%eax, %0": "=m" (_doserrno)); asm("1:"); return (unsigned)_doserrno; } unsigned _dos_setftime(int fd, unsigned dosdate, unsigned dostime) { asm("movl %0, %%ebx": : "g" (fd)); asm("movl %0, %%ecx": : "g" (dostime)); asm("movl %0, %%edx": : "g" (dosdate)); asm("movl $0x5701, %eax"); asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"); _doserrno = 0; asm("jnc 1f"); asm("movl %%eax, %0": "=m" (_doserrno)); errno = EBADF; asm("1:"); return (unsigned)_doserrno; } unsigned _dos_setfileattr(char *name, unsigned attr) { #if 0 /* stripping of trailing '/' is not needed for unzip-internal use */ unsigned namlen = strlen(name); char *i_name = alloca(namlen + 1); strcpy(i_name, name); if (namlen > 1 && i_name[namlen-1] == '/' && i_name[namlen-2] != ':') i_name[namlen-1] = '\0'; asm("movl %0, %%edx": : "g" (i_name)); #else asm("movl %0, %%edx": : "g" (name)); #endif asm("movl %0, %%ecx": : "g" (attr)); asm("movl $0x4301, %eax"); asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"); _doserrno = 0; asm("jnc 1f"); asm("movl %%eax, %0": "=m" (_doserrno)); switch (_doserrno) { case 2: case 3: errno = ENOENT; break; case 5: errno = EACCES; break; } asm("1:"); return (unsigned)_doserrno; } void _dos_getdrive(unsigned *d) { asm("movl $0x1900, %eax"); asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"); asm("xorb %ah, %ah"); asm("incb %al"); asm("movl %%eax, %0": "=a" (*d)); } unsigned _dos_creat(char *path, unsigned attr, int *fd) { asm("movl $0x3c00, %eax"); asm("movl %0, %%edx": :"g" (path)); asm("movl %0, %%ecx": :"g" (attr)); asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"); asm("movl %%eax, %0": "=a" (*fd)); _doserrno = 0; asm("jnc 1f"); _doserrno = *fd; switch (_doserrno) { case 3: errno = ENOENT; break; case 4: errno = EMFILE; break; case 5: errno = EACCES; break; } asm("1:"); return (unsigned)_doserrno; } unsigned _dos_close(int fd) { asm("movl %0, %%ebx": : "g" (fd)); asm("movl $0x3e00, %eax"); asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi"); _doserrno = 0; asm("jnc 1f"); asm ("movl %%eax, %0": "=m" (_doserrno)); if (_doserrno == 6) { errno = EBADF; } asm("1:"); return (unsigned)_doserrno; } #endif /* !__DJGPP__ || (__DJGPP__ < 2) */ static int volumelabel(char *name) { int fd; return _dos_creat(name, FA_LABEL, &fd) ? fd : _dos_close(fd); } #if (defined(__DJGPP__) && (__DJGPP__ >= 2)) #include /* These includes for the country info */ #include #include /* The above _dos_getcountryinfo function doesn't work with djgpp v2, presumably * because ds is not set correctly (does it really work at all?). Note that * this version only sets the date (ie. CountryInfo[0]). */ unsigned _dos_getcountryinfo(void *countrybuffer) { __dpmi_regs regs; regs.x.ax = 0x3800; regs.x.dx = __tb & 0x0f; regs.x.ds = (__tb >> 4) & 0xffff; _doserrno = __dpmi_int(0x21, ®s); *(ush*)countrybuffer = _farpeekw(_dos_ds, __tb & 0xfffff); return (unsigned)_doserrno; } /* Disable determination of "x" bit in st_mode field for [f]stat() calls. */ int _is_executable (const char *path, int fhandle, const char *ext) { return 0; } #ifndef USE_DJGPP_GLOB /* Prevent globbing of filenames. This gives the same functionality as * "stubedit globbing=no" did with DJGPP v1. */ char **__crt0_glob_function(char *_arg) { return NULL; } #endif /* !USE_DJGPP_GLOB */ #ifndef USE_DJGPP_ENV /* Reduce the size of the executable and remove the functionality to read * the program's environment from whatever $DJGPP points to. */ void __crt0_load_environment_file(char *_app_name) { } #endif /* !USE_DJGPP_ENV */ #endif /* __DJGPP__ >= 2 */ #endif /* __GO32__ || __EMX__ */ #ifdef __EMX__ #ifdef MORE /*************************/ /* Function screensize() */ /*************************/ int screensize(int *tt_rows, int *tt_cols) { int scr_dimen[2]; /* scr_dimen[0]: columns, src_dimen[1]: rows */ _scrsize(scr_dimen); if (tt_rows != NULL) *tt_rows = scr_dimen[1]; if (tt_cols != NULL) *tt_cols = scr_dimen[0]; return 0; } #endif /* MORE */ #endif /* __EMX__ */ #ifdef WATCOMC_386 static struct RMINFO { ulg edi, esi, ebp; ulg reserved; ulg ebx, edx, ecx, eax; ush flags; ush es,ds,fs,gs; ush ip_ignored,cs_ignored; ush sp,ss; }; /* This function is used to call dos interrupts that may not be supported * by some particular 32-bit DOS extender. It uses DPMI function 300h to * simulate a real mode call of the interrupt. The caller is responsible * for providing real mode addresses of any buffer areas used. The docs * for PMODE/W imply that this should not be necessary for calling the DOS * interrupts that it doesn't extend, but it crashes when this isn't used. */ static int int86x_realmode(int inter_no, union REGS *in, union REGS *out, struct SREGS *seg) { union REGS local; struct SREGS localseg; struct RMINFO rmi; int r; rmi.eax = in->x.eax; rmi.ebx = in->x.ebx; rmi.ecx = in->x.ecx; rmi.edx = in->x.edx; rmi.edi = in->x.edi; rmi.esi = in->x.esi; rmi.ebp = rmi.reserved = 0L; rmi.es = seg->es; rmi.ds = seg->ds; rmi.fs = seg->fs; rmi.gs = seg->gs; rmi.sp = rmi.ss = rmi.ip_ignored = rmi.cs_ignored = rmi.flags = 0; memset(&local, 0, sizeof(local)); memset(&localseg, 0, sizeof(localseg)); local.w.ax = 0x0300; local.h.bl = inter_no; local.h.bh = 0; local.w.cx = 0; localseg.es = FP_SEG(&rmi); local.x.edi = FP_OFF(&rmi); r = int386x(0x31, &local, &local, &localseg); out->x.eax = rmi.eax; out->x.ebx = rmi.ebx; out->x.ecx = rmi.ecx; out->x.edx = rmi.edx; out->x.edi = rmi.edi; out->x.esi = rmi.esi; out->x.cflag = rmi.flags & INTR_CF; return r; } #endif /* WATCOMC_386 */ #ifdef DOS_STAT_BANDAID /* This papers over a bug in Watcom 10.6's standard library...sigh. * Apparently it applies to both the DOS and Win32 stat()s. */ int stat_bandaid(const char *path, struct stat *buf) { char newname[4]; if (!stat(path, buf)) return 0; else if (!strcmp(path, ".") || (path[0] && !strcmp(path + 1, ":."))) { strcpy(newname, path); newname[strlen(path) - 1] = '\\'; /* stat(".") fails for root! */ return stat(newname, buf); } else return -1; } #endif /* DOS_STAT_BANDAID */