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- /*---------------------------------------------------------------------------
-
- msdos.c
-
- MSDOS-specific routines for use with Info-ZIP's UnZip 5.1 and later.
-
- Contains: Opendir() (from zip)
- Readdir() (from zip)
- do_wild()
- mapattr()
- mapname()
- checkdir()
- isfloppy()
- volumelabel() (non-djgpp, non-emx)
- close_outfile()
- dateformat()
- version()
- _dos_getcountryinfo() (djgpp, emx)
- _dos_setftime() (djgpp, emx)
- _dos_setfileattr() (djgpp, emx)
- _dos_getdrive() (djgpp, emx)
- _dos_creat() (djgpp, emx)
- _dos_close() (djgpp, emx)
- volumelabel() (djgpp, emx)
-
- ---------------------------------------------------------------------------*/
-
-
-
- #include "unzip.h"
- #undef FILENAME /* BC++ 3.1 and djgpp 1.11 define FILENAME in <dir.h> */
-
- static int isfloppy OF((int nDrive));
- 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() */
-
- #if (defined(__GO32__) || defined(__EMX__))
- # define MKDIR(path,mode) mkdir(path,mode)
- # include <dirent.h> /* use readdir() */
- # define direct dirent
- # define Opendir opendir
- # define Readdir readdir
- # ifdef __EMX__
- # include <dos.h>
- # define GETDRIVE(d) d = _getdrive()
- # define FA_LABEL A_LABEL
- # else
- # define GETDRIVE(d) _dos_getdrive(&d)
- # endif
- #else /* !(__GO32__ || __EMX__) */
- # define MKDIR(path,mode) mkdir(path)
- # ifdef __TURBOC__
- # define FATTR FA_HIDDEN+FA_SYSTEM+FA_DIREC
- # define FVOLID FA_VOLID
- # 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 <dir.h>
- # else /* !__TURBOC__ */
- # define FATTR _A_HIDDEN+_A_SYSTEM+_A_SUBDIR
- # define FVOLID _A_VOLID
- # 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 <direct.h>
- # endif /* ?__TURBOC__ */
- typedef struct direct {
- char d_reserved[30];
- char d_name[13];
- int d_first;
- } DIR;
- # define closedir free
- DIR *Opendir OF((const char *));
- struct direct *Readdir OF((DIR *));
-
-
-
-
- #ifndef SFX
-
- /**********************/ /* Borland C++ 3.x has its own opendir/readdir */
- /* Function Opendir() */ /* library routines, but earlier versions don't, */
- /**********************/ /* so use ours regardless */
-
- DIR *Opendir(name)
- const char *name; /* name of directory to open */
- {
- DIR *dirp; /* malloc'd return value */
- char *nbuf; /* malloc'd temporary string */
- int len = strlen(name); /* path length to avoid strlens and strcats */
-
-
- if ((dirp = (DIR *)malloc(sizeof(DIR))) == (DIR *)NULL)
- return (DIR *)NULL;
- if ((nbuf = malloc(len + 5)) == (char *)NULL) {
- free(dirp);
- return (DIR *)NULL;
- }
- strcpy(nbuf, name);
- 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((voidp *)nbuf);
- return (DIR *)NULL;
- }
- free((voidp *)nbuf);
- dirp->d_first = 1;
- return dirp;
- }
-
-
-
-
-
- /**********************/
- /* Function Readdir() */
- /**********************/
-
- struct direct *Readdir(d)
- DIR *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 direct *)NULL;
- return (struct direct *)d;
- }
-
- #endif /* !SFX */
- #endif /* ?(__GO32__ || __EMX__) */
-
-
-
-
-
- #ifndef SFX
-
- /************************/
- /* Function do_wild() */ /* identical to OS/2 version */
- /************************/
-
- char *do_wild(wildspec)
- char *wildspec; /* only used first time on a given dir */
- {
- static DIR *dir = (DIR *)NULL;
- static char *dirname, *wildname, matchname[FILNAMSIZ];
- static char Far CantAllocateWildcard[] =
- "warning: can't allocate wildcard buffers\n";
- static int firstcall=TRUE, have_dirname, dirnamelen;
- struct direct *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 (firstcall) { /* first call: must initialize everything */
- firstcall = FALSE;
-
- /* break the wildspec into a directory part and a wildcard filename */
- if ((wildname = strrchr(wildspec, '/')) == (char *)NULL &&
- (wildname = strrchr(wildspec, ':')) == (char *)NULL) {
- dirname = ".";
- dirnamelen = 1;
- have_dirname = FALSE;
- wildname = wildspec;
- } else {
- ++wildname; /* point at character after '/' or ':' */
- dirnamelen = wildname - wildspec;
- if ((dirname = (char *)malloc(dirnamelen+1)) == (char *)NULL) {
- FPRINTF(stderr, 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 ((dir = Opendir(dirname)) != (DIR *)NULL) {
- while ((file = Readdir(dir)) != (struct direct *)NULL) {
- Trace((stderr, "do_wild: readdir returns %s\n", file->d_name));
- if (match(file->d_name, wildname, 1)) { /* 1 == ignore case */
- Trace((stderr, "do_wild: match() succeeds\n"));
- if (have_dirname) {
- strcpy(matchname, dirname);
- strcpy(matchname+dirnamelen, file->d_name);
- } else
- strcpy(matchname, file->d_name);
- return matchname;
- }
- }
- /* if we get to here directory is exhausted, so close it */
- closedir(dir);
- dir = (DIR *)NULL;
- }
- Trace((stderr, "do_wild: opendir(%s) returns NULL\n", dirname));
-
- /* 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 (dir == (DIR *)NULL) {
- firstcall = TRUE; /* 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.
- */
- while ((file = Readdir(dir)) != (struct direct *)NULL)
- if (match(file->d_name, wildname, 1)) { /* 1 == ignore case */
- if (have_dirname) {
- /* strcpy(matchname, dirname); */
- strcpy(matchname+dirnamelen, file->d_name);
- } else
- strcpy(matchname, file->d_name);
- return matchname;
- }
-
- closedir(dir); /* have read at least one dir entry; nothing left */
- dir = (DIR *)NULL;
- firstcall = TRUE; /* reset for new wildspec */
- if (have_dirname)
- free(dirname);
- return (char *)NULL;
-
- } /* end function do_wild() */
-
- #endif /* !SFX */
-
-
-
-
-
- /**********************/
- /* Function mapattr() */
- /**********************/
-
- int mapattr()
- {
- /* set archive bit (file is not backed up): */
- pInfo->file_attr = (unsigned)(crec.external_file_attributes | 32) & 0xff;
- return 0;
-
- } /* end function mapattr() */
-
-
-
-
-
- /*****************************/
- /* Strings used in msdos.c */
- /*****************************/
-
- static char Far ConversionFailed[] = "mapname: conversion of %s failed\n";
- static char Far ErrSetVolLabel[] = "mapname: error setting volume label\n";
- static char Far PathTooLong[] = "checkdir error: path too long: %s\n";
- static char Far CantCreateDir[] = "checkdir error: can't create %s\n\
- unable to process %s.\n";
- static char Far DirIsntDirectory[] =
- "checkdir error: %s exists but is not directory\n\
- unable to process %s.\n";
- static char Far PathTooLongTrunc[] =
- "checkdir warning: path too long; truncating\n %s\n\
- -> %s\n";
- #if (!defined(SFX) || defined(SFX_EXDIR))
- static char Far CantCreateExtractDir[] =
- "checkdir: can't create extraction directory: %s\n";
- #endif
-
-
-
-
-
- /************************/
- /* Function mapname() */
- /************************/
-
- int mapname(renamed) /* return 0 if no error, 1 if caution (filename trunc), */
- int renamed; /* 2 if warning (skip file because dir doesn't exist), */
- { /* 3 if error (skip file), 10 if no memory (skip file) */
- char pathcomp[FILNAMSIZ]; /* path-component buffer */
- char *pp, *cp=(char *)NULL; /* character pointers */
- char *lastsemi=(char *)NULL; /* pointer to last semi-colon in pathcomp */
- char *last_dot=(char *)NULL; /* last dot not converted to underscore */
- int quote = FALSE; /* flag: next char is literal */
- int dotname = FALSE; /* flag: path component begins with dot */
- 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 */
- create_dirs = (!fflag || renamed);
-
- created_dir = FALSE; /* not yet */
- renamed_fullpath = FALSE;
-
- /* GRR: for VMS, convert to internal format now or later? or never? */
- if (renamed) {
- cp = filename - 1; /* point to beginning of renamed name... */
- while (*++cp)
- if (*cp == '\\') /* convert backslashes to forward */
- *cp = '/';
- cp = filename;
- /* use temporary rootpath if user gave full pathname */
- if (filename[0] == '/') {
- renamed_fullpath = TRUE;
- pathcomp[0] = '/'; /* copy the '/' and terminate */
- pathcomp[1] = '\0';
- ++cp;
- } else if (isalpha(filename[0]) && 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(pathcomp, INIT)) != 0) /* initialize path buffer */
- 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 (jflag) /* junking directories */
- cp = (char *)strrchr(filename, '/');
- if (cp == (char *)NULL) /* no '/' or not junking dirs */
- cp = 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) {
-
- if (quote) { /* if character quoted, */
- *pp++ = (char)workch; /* include it literally */
- quote = FALSE;
- } else
- switch (workch) {
- case '/': /* can assume -j flag not given */
- *pp = '\0';
- /* GRR: can add 8.3 truncation here */
- if (last_dot) { /* one dot in directory name is legal */
- *last_dot = '.';
- last_dot = (char *)NULL;
- }
- if ((error = checkdir(pathcomp, APPEND_DIR)) > 1)
- return error;
- pp = pathcomp; /* reset conversion buffer for next piece */
- lastsemi = (char *)NULL; /* leave directory semi-colons alone */
- break;
-
- case ':': /* drive names not stored in zipfile, */
- case '[': /* so no colons allowed; no brackets, */
- case ']': /* either */
- *pp++ = '_';
- break;
-
- case '.':
- if (pp == pathcomp) { /* nothing appended yet... */
- if (*cp == '/') { /* don't bother appending a "./" */
- ++cp; /* component to the path: skip */
- break; /* to next char after the '/' */
- } else if (*cp == '.' && cp[1] == '/') { /* "../" */
- *pp++ = '.'; /* add first dot, unchanged... */
- ++cp; /* skip second dot, since it will */
- } else { /* be "added" at end of if-block */
- *pp++ = '_'; /* FAT doesn't allow null filename */
- dotname = TRUE; /* bodies, so map .exrc -> _.exrc */
- } /* (extra '_' now, "dot" below) */
- } else if (dotname) { /* found a second dot, but still */
- dotname = FALSE; /* have extra leading underscore: */
- *pp = '\0'; /* remove it by shifting chars */
- pp = pathcomp + 1; /* left one space (e.g., .p1.p2: */
- while (pp[1]) { /* __p1 -> _p1_p2 -> _p1.p2 when */
- *pp = pp[1]; /* finished) [opt.: since first */
- ++pp; /* two chars are same, can start */
- } /* shifting at second position] */
- }
- last_dot = pp; /* point at last dot so far... */
- *pp++ = '_'; /* convert dot to underscore for now */
- break;
-
- case ';': /* start of VMS version? */
- lastsemi = pp; /* omit for now; remove VMS vers. later */
- break;
-
- case '\026': /* control-V quote for special chars */
- quote = TRUE; /* set flag for next character */
- break;
-
- case ' ': /* change spaces to underscore only */
- if (sflag) /* if specifically requested */
- *pp++ = '_';
- else
- *pp++ = (char)workch;
- break;
-
- default:
- /* allow European characters in filenames: */
- if (isprint(workch) || (128 <= workch && workch <= 254))
- *pp++ = (char)workch;
- } /* end switch */
-
- } /* end while loop */
-
- *pp = '\0'; /* done with pathcomp: terminate it */
-
- /* if not saving them, remove VMS version numbers (appended "###") */
- if (!V_flag && lastsemi) {
- pp = lastsemi; /* semi-colon was omitted: expect all #'s */
- while (isdigit((uch)(*pp)))
- ++pp;
- if (*pp == '\0') /* only digits between ';' and end: nuke */
- *lastsemi = '\0';
- }
-
- /* GRR: can add 8.3 truncation here */
- if (last_dot != (char *)NULL) /* one dot is OK: put it back in */
- *last_dot = '.'; /* (already done for directories) */
-
- /*---------------------------------------------------------------------------
- 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 (filename[strlen(filename) - 1] == '/') {
- checkdir(filename, GETPATH);
- if (created_dir && QCOND2) {
- FPRINTF(stdout, " creating: %s\n", filename);
- return IZ_CREATED_DIR; /* set dir time (note trailing '/') */
- }
- return 2; /* dir existed already; don't look for data to extract */
- }
-
- if (*pathcomp == '\0') {
- FPRINTF(stderr, LoadFarString(ConversionFailed), filename);
- return 3;
- }
-
- checkdir(pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */
- checkdir(filename, GETPATH);
-
- if (pInfo->vollabel) { /* set the volume label now */
- if (QCOND2)
- FPRINTF(stdout, "labelling %c: %-22s\n", (nLabelDrive + 'a' - 1),
- filename);
- if (volumelabel(filename)) {
- FPRINTF(stderr, LoadFarString(ErrSetVolLabel));
- return 3;
- }
- return 2; /* success: skip the "extraction" quietly */
- }
-
- return error;
-
- } /* end function mapname() */
-
-
-
-
-
- /***********************/
- /* Function checkdir() */
- /***********************/
-
- int checkdir(pathcomp, flag)
- 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, &statbuf))
- #else
- if (stat(buildpath, &statbuf)) /* path doesn't exist */
- #endif
- {
- if (!create_dirs) { /* told not to create (freshening) */
- free(buildpath);
- return 2; /* path doesn't exist: nothing to do */
- }
- if (too_long) {
- FPRINTF(stderr, LoadFarString(PathTooLong), buildpath);
- fflush(stderr);
- free(buildpath);
- return 4; /* no room for filenames: fatal */
- }
- if (MKDIR(buildpath, 0777) == -1) { /* create the directory */
- FPRINTF(stderr, LoadFarString(CantCreateDir), buildpath,
- filename);
- fflush(stderr);
- free(buildpath);
- return 3; /* path didn't exist, tried to create, failed */
- }
- created_dir = TRUE;
- } else if (!S_ISDIR(statbuf.st_mode)) {
- FPRINTF(stderr, LoadFarString(DirIsntDirectory), buildpath,
- filename);
- fflush(stderr);
- free(buildpath);
- return 3; /* path existed but wasn't dir */
- }
- if (too_long) {
- FPRINTF(stderr, LoadFarString(PathTooLong), buildpath);
- fflush(stderr);
- free(buildpath);
- return 4; /* no room for filenames: fatal */
- }
- *end++ = '/';
- *end = '\0';
- Trace((stderr, "buildpath now = [%s]\n", 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", 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) {
- Trace((stderr, "appending filename [%s]\n", pathcomp));
- while ((*end = *pathcomp++) != '\0') {
- ++end;
- if ((end-buildpath) >= FILNAMSIZ) {
- *--end = '\0';
- FPRINTF(stderr, LoadFarString(PathTooLongTrunc),
- filename, buildpath);
- fflush(stderr);
- return 1; /* filename truncated */
- }
- }
- Trace((stderr, "buildpath now = [%s]\n", 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 "));
- if ((buildpath = (char *)malloc(strlen(filename)+rootlen+1)) ==
- (char *)NULL)
- return 10;
- if (pInfo->vollabel) {
- /* GRR: for network drives, do strchr() and return IZ_VOL_LABEL if not [1] */
- if (renamed_fullpath && pathcomp[1] == ':')
- *buildpath = ToLower(*pathcomp);
- else if (!renamed_fullpath && rootpath && rootpath[1] == ':')
- *buildpath = 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 (volflag == 0 || *buildpath < 'a' || /* no labels/bogus disk */
- (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", 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", pathcomp));
- if (pathcomp == (char *)NULL) {
- rootlen = 0;
- return 0;
- }
- if ((rootlen = strlen(pathcomp)) > 0) {
- int had_trailing_pathsep=FALSE, has_drive=FALSE, xtra=2;
-
- if (isalpha(pathcomp[0]) && pathcomp[1] == ':')
- has_drive = TRUE; /* drive designator */
- if (pathcomp[rootlen-1] == '/') {
- pathcomp[--rootlen] = '\0';
- had_trailing_pathsep = TRUE;
- }
- if (has_drive && (rootlen == 2)) {
- if (!had_trailing_pathsep) /* i.e., original wasn't "x:/" */
- xtra = 3; /* room for '.' + '/' + 0 at end of "x:" */
- } 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(pathcomp, &attrs) ||
- SSTAT(pathcomp, &statbuf) || !S_ISDIR(statbuf.st_mode))
- #else
- if (SSTAT(pathcomp, &statbuf) || !S_ISDIR(statbuf.st_mode))
- #endif
- {
- /* path does not exist */
- if (!create_dirs /* || iswild(pathcomp) */
- #ifdef OLD_EXDIR
- || (!has_drive && !had_trailing_pathsep)
- #endif
- ) {
- 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 to scan pathcomp
- * and create more than one level, but really necessary?) */
- if (MKDIR(pathcomp, 0777) == -1) {
- FPRINTF(stderr, LoadFarString(CantCreateExtractDir),
- pathcomp);
- fflush(stderr);
- rootlen = 0; /* path didn't exist, tried to create, */
- return 3; /* failed: file exists, or need 2+ levels */
- }
- }
- }
- if ((rootpath = (char *)malloc(rootlen+xtra)) == (char *)NULL) {
- rootlen = 0;
- return 10;
- }
- strcpy(rootpath, pathcomp);
- if (xtra == 3) /* had just "x:", make "x:." */
- rootpath[rootlen++] = '.';
- rootpath[rootlen++] = '/';
- rootpath[rootlen] = '\0';
- }
- Trace((stderr, "rootpath now = [%s]\n", 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);
- 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 (regs.x.flags & 1)
- #else
- intdos(®s, ®s);
- if (regs.x.cflag) /* error: do default a/b check instead */
- #endif
- {
- Trace((stderr,
- "error in DOS function 0x44 (AX = 0x%04x): guessing instead...\n",
- regs.x.ax));
- return (nDrive == 1 || nDrive == 2)? TRUE : FALSE;
- } else
- return regs.x.ax? FALSE : TRUE;
- }
-
-
-
-
- #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);
- 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.
- ---------------------------------------------------------------------------*/
-
- memset((char *)&dta, 0, sizeof(dos_fcb));
- memset((char *)&fcb, 0, sizeof(dos_fcb));
-
- #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 = FP_SEG(pdta);
- regs.x.dx = FP_OFF(pdta);
- Trace((stderr, "segment:offset of pdta = %x:%x\n", sregs.ds, regs.x.dx));
- Trace((stderr, "&dta = %lx, pdta = %lx\n", (ulg)&dta, (ulg)pdta));
- regs.h.ah = 0x1a;
- intdosx(®s, ®s, &sregs);
-
- /* fill in the FCB */
- sregs.ds = FP_SEG(pfcb);
- regs.x.dx = FP_OFF(pfcb);
- 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, regs.x.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 */
- #if 0 /* THIS STRNCPY FAILS (MSC bug?): */
- strncpy(pfcb->vn, "???????????", 11); /* i.e., "*.*" */
- Trace((stderr, "pfcb->vn = %lx\n", (ulg)pfcb->vn));
- Trace((stderr, "flag = %x, drive = %d, vattr = %x, vn = %s = %s.\n",
- fcb.flag, fcb.drive, fcb.vattr, fcb.vn, pfcb->vn));
- #endif
- strncpy((char *)fcb.vn, "???????????", 11); /* i.e., "*.*" */
- 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, regs.x.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));
- intdosx(®s, ®s, &sregs);
-
- /*---------------------------------------------------------------------------
- If not previously labelled, write a new label. Otherwise just rename,
- since MS-DOS 2.x has a bug which 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 */
- strncpy((char *)fcb.vn, newlabel, len);
- if (len < 11) /* fill with spaces */
- strncpy((char *)(fcb.vn+len), " ", 11-len);
- 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));
- 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));
- intdosx(®s, ®s, &sregs);
- return 1;
- } else {
- intdosx(®s, ®s, &sregs);
- Trace((stderr, "new volume label [%s] written\n", newlabel));
- return 0;
- }
- } else {
- Trace((stderr, "found old label [%s]\n\n", dta.vn)); /* not term. */
- regs.h.ah = 0x17; /* FCB rename */
- 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);
- 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));
- intdosx(®s, ®s, &sregs);
- if (regs.h.al) {
- Trace((stderr, "Unable to change volume name (AL = %x)\n",
- regs.h.al));
- return 1;
- } else {
- Trace((stderr, "volume label changed to [%s]\n", newlabel));
- return 0;
- }
- }
- } /* end function volumelabel() */
-
- #endif /* !__GO32__ && !__EMX__ */
-
-
-
-
-
- /****************************/
- /* Function close_outfile() */
- /****************************/
-
- void close_outfile()
- /*
- * 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 __TURBOC__
- union {
- struct ftime ft; /* system file time record */
- struct {
- ush ztime; /* date and time words */
- ush zdate; /* .. same format as in .ZIP file */
- } zt;
- } td;
- #endif
-
-
- /*---------------------------------------------------------------------------
- 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 __TURBOC__
- td.zt.ztime = lrec.last_mod_file_time;
- td.zt.zdate = lrec.last_mod_file_date;
- setftime(fileno(outfile), &td.ft);
- #else
- _dos_setftime(fileno(outfile), lrec.last_mod_file_date,
- lrec.last_mod_file_time);
- #endif
-
- /*---------------------------------------------------------------------------
- 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(outfile);
-
- #ifdef __TURBOC__
- # if (defined(__BORLANDC__) && (__BORLANDC__ >= 0x0452))
- # define Chmod _rtl_chmod
- # else
- # define Chmod _chmod
- # endif
- if (Chmod(filename, 1, pInfo->file_attr) != pInfo->file_attr)
- FPRINTF(stderr, "\nwarning: file attributes may not be correct\n");
- #else /* !__TURBOC__ */
- _dos_setfileattr(filename, pInfo->file_attr);
- #endif /* ?__TURBOC__ */
-
- } /* end function close_outfile() */
-
-
-
-
-
- #ifndef SFX
-
- /*************************/
- /* Function dateformat() */
- /*************************/
-
- int dateformat()
- {
-
- /*---------------------------------------------------------------------------
- For those operating systems which support it, this function returns a
- value which 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 MSWIN
- #if (!defined(__GO32__) && !defined(__EMX__))
- unsigned short _CountryInfo[18];
- unsigned short far *CountryInfo = _CountryInfo;
- struct SREGS sregs;
- union REGS regs;
-
- sregs.ds = FP_SEG(CountryInfo);
- regs.x.dx = FP_OFF(CountryInfo);
- regs.x.ax = 0x3800;
- int86x(0x21, ®s, ®s, &sregs);
-
- #else /* __GO32__ || __EMX__ */
- unsigned short CountryInfo[18];
-
- _dos_getcountryinfo(CountryInfo);
- #endif
-
- switch(CountryInfo[0]) {
- case 0:
- return DF_MDY;
- case 1:
- return DF_DMY;
- case 2:
- return DF_YMD;
- }
- #endif /* !MSWIN */
-
- return DF_MDY; /* default for systems without locale info */
-
- } /* end function dateformat() */
-
-
-
-
-
- /************************/
- /* Function version() */
- /************************/
-
- void version()
- {
- extern char Far CompiledWith[];
- #if defined(__WATCOMC__) || defined(__TURBOC__) || defined(_MSC_VER)
- char buf[80];
- #endif
-
- PRINTF(LoadFarString(CompiledWith),
-
- #ifdef __GNUC__
- # ifdef __EMX__ /* __EMX__ is defined as "1" only (sigh) */
- "emx+gcc ",
- # else
- # ifdef __GO32__ /* ...so is __GO32__ (double sigh) */
- "djgpp gcc ",
- # else
- "gcc ",
- # endif
- # endif
- __VERSION__,
- #else
- #ifdef __WATCOMC__
- "Watcom C", (sprintf(buf, " (__WATCOMC__ = %d)", __WATCOMC__), buf),
- #else
- #ifdef __TURBOC__
- # ifdef __BORLANDC__
- "Borland C++",
- # if (__BORLANDC__ < 0x0200)
- " 1.0",
- # else
- # if (__BORLANDC__ == 0x0200) /* James: __TURBOC__ = 0x0297 */
- " 2.0",
- # else
- # if (__BORLANDC__ == 0x0400)
- " 3.0",
- # else
- # if (__BORLANDC__ == 0x0410) /* __BCPLUSPLUS__ = 0x0310 */
- " 3.1",
- # else
- # if (__BORLANDC__ == 0x0452) /* __BCPLUSPLUS__ = 0x0320 */
- " 4.0 or 4.02",
- # else
- " later than 4.1",
- # endif
- # endif
- # endif
- # endif
- # endif
- # else
- "Turbo C",
- # if (__TURBOC__ >= 0x0400) /* Kevin: 3.0 -> 0x0401 */
- "++ 3.0 or later",
- # else
- # if (__TURBOC__ == 0x0295) /* [661] vfy'd by Kevin */
- "++ 1.0",
- # else
- # if ((__TURBOC__ >= 0x018d) && (__TURBOC__ <= 0x0200)) /* James: 0x0200 */
- " 2.0",
- # else
- # if (__TURBOC__ > 0x0100)
- " 1.5", /* James: 0x0105? */
- # else
- " 1.0", /* James: 0x0100 */
- # endif
- # endif
- # endif
- # endif
- # endif
- #else
- #ifdef MSC
- "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
- #else
- "unknown compiler", "",
- #endif /* MSC */
- #endif /* __TURBOC__ */
- #endif /* __WATCOMC__ */
- #endif /* __GNUC__ */
-
- "MS-DOS",
-
- #if (defined(__GNUC__) || (defined(__WATCOMC__) && defined(__386__)))
- " (32-bit)",
- #else
- # if defined(M_I86HM) || defined(__HUGE__)
- " (16-bit, huge)",
- # else
- # if defined(M_I86LM) || defined(__LARGE__)
- " (16-bit, large)",
- # else
- # if defined(M_I86MM) || defined(__MEDIUM__)
- " (16-bit, medium)",
- # else
- # if defined(M_I86CM) || defined(__COMPACT__)
- " (16-bit, compact)",
- # else
- # if defined(M_I86SM) || defined(__SMALL__)
- " (16-bit, small)",
- # else
- # if defined(M_I86TM) || defined(__TINY__)
- " (16-bit, tiny)",
- # else
- " (16-bit)",
- # endif
- # endif
- # endif
- # endif
- # endif
- # endif
- #endif
-
- #ifdef __DATE__
- " on ", __DATE__
- #else
- "", ""
- #endif
- );
-
- /* temporary debugging code for Borland compilers only */
- #ifdef __TURBOC__
- PRINTF("\tdebug(__TURBOC__ = 0x%04x = %d)\n", __TURBOC__, __TURBOC__);
- #ifdef __BORLANDC__
- PRINTF("\tdebug(__BORLANDC__ = 0x%04x)\n", __BORLANDC__);
- #else
- PRINTF("\tdebug(__BORLANDC__ not defined)\n");
- #endif
- #ifdef __TCPLUSPLUS__
- PRINTF("\tdebug(__TCPLUSPLUS__ = 0x%04x)\n", __TCPLUSPLUS__);
- #else
- PRINTF("\tdebug(__TCPLUSPLUS__ not defined)\n");
- #endif
- #ifdef __BCPLUSPLUS__
- PRINTF("\tdebug(__BCPLUSPLUS__ = 0x%04x)\n\n", __BCPLUSPLUS__);
- #else
- PRINTF("\tdebug(__BCPLUSPLUS__ not defined)\n\n");
- #endif
- #endif
-
- } /* end function version() */
-
- #endif /* !SFX */
-
-
-
-
-
- #if (defined(__GO32__) || defined(__EMX__))
-
- int volatile _doserrno;
-
- 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 _doserrno;
- }
-
- void _dos_setftime(int fd, ush dosdate, ush 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");
- }
-
- void _dos_setfileattr(char *name, int attr)
- {
- asm("movl %0, %%edx": : "g" (name));
- asm("movl %0, %%ecx": : "g" (attr));
- asm("movl $0x4301, %eax");
- asm("int $0x21": : : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi");
- }
-
- 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 _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 _doserrno;
- }
-
- static int volumelabel(char *name)
- {
- int fd;
-
- return _dos_creat(name, FA_LABEL, &fd) ? fd : _dos_close(fd);
- }
-
- #endif /* __GO32__ || __EMX__ */
-