📄 os2.c
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case '/': /* can assume -j flag not given */
*pp = '\0';
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 ':':
*pp++ = '_'; /* drive names not stored in zipfile, */
break; /* so no colons allowed */
case ';': /* start of VMS version? */
lastsemi = pp; /* remove VMS version later... */
*pp++ = ';'; /* but keep semicolon for now */
break;
case '\026': /* control-V quote for special chars */
quote = TRUE; /* set flag for next character */
break;
case ' ': /* keep spaces unless specifically */
if (sflag) /* requested to change to underscore */
*pp++ = '_';
else
*pp++ = ' ';
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 + 1; /* semi-colon was kept: expect #'s after */
while (isdigit((uch)(*pp)))
++pp;
if (*pp == '\0') /* only digits between ';' and end: nuke */
*lastsemi = '\0';
}
/*---------------------------------------------------------------------------
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[fnlen-1] == '/') {
checkdir(filename, GETPATH);
if (created_dir && QCOND2) {
/* GRR: trailing '/'? need to strip or not? */
FPRINTF(stdout, " creating: %-22s\n", filename);
if (extra_field) /* zipfile extra field has extended attributes */
SetEAs(filename, extra_field);
SetPathInfo(filename, lrec.last_mod_file_date,
lrec.last_mod_file_time, -1);
return IZ_CREATED_DIR; /* dir time already set */
}
return 2; /* dir existed already; don't look for data to extract */
}
if (*pathcomp == '\0') {
FPRINTF(stderr, "mapname: conversion of %s failed\n", filename);
return 3;
}
checkdir(pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */
checkdir(filename, GETPATH);
Trace((stderr, "mapname returns with filename = [%s] (error = %d)\n\n",
filename, error));
if (pInfo->vollabel) { /* set the volume label now */
VOLUMELABEL FSInfoBuf;
/* GRR: "VOLUMELABEL" defined for IBM C and emx, but haven't checked MSC... */
strcpy(FSInfoBuf.szVolLabel, filename);
FSInfoBuf.cch = (BYTE)strlen(FSInfoBuf.szVolLabel);
if (QCOND2)
FPRINTF(stdout, "labelling %c: %-22s\n",
(char)(nLabelDrive + 'a' - 1), filename);
if (DosSetFSInfo(nLabelDrive, FSIL_VOLSER, (PBYTE)&FSInfoBuf,
sizeof(VOLUMELABEL)))
{
FPRINTF(stderr, "mapname: error setting volume label\n");
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 *buildpathHPFS; /* full path (so far) to extracted file, */
static char *buildpathFAT; /* both HPFS/EA (main) and FAT versions */
static char *endHPFS; /* corresponding pointers to end of */
static char *endFAT; /* buildpath ('\0') */
# 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) {
char *p = pathcomp;
int longdirEA, too_long=FALSE;
Trace((stderr, "appending dir segment [%s]\n", pathcomp));
while ((*endHPFS = *p++) != '\0') /* copy to HPFS filename */
++endHPFS;
if (IsFileNameValid(buildpathHPFS)) {
longdirEA = FALSE;
p = pathcomp;
while ((*endFAT = *p++) != '\0') /* copy to FAT filename, too */
++endFAT;
} else {
longdirEA = TRUE;
/* GRR: check error return? */
map2fat(pathcomp, &endFAT); /* map, put in FAT fn, update endFAT */
}
/* GRR: could do better check, see if overrunning buffer as we go:
* check endHPFS-buildpathHPFS 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. */
/* next check: need to append '/', at least one-char name, '\0' */
if ((endHPFS-buildpathHPFS) > FILNAMSIZ-3)
too_long = TRUE; /* check if extracting dir? */
#ifdef MSC /* MSC 6.00 bug: stat(non-existent-dir) == 0 [exists!] */
if (GetFileTime(buildpathFAT) == -1 || stat(buildpathFAT, &statbuf))
#else
if (stat(buildpathFAT, &statbuf)) /* path doesn't exist */
#endif
{
if (!create_dirs) { /* told not to create (freshening) */
free(buildpathHPFS);
free(buildpathFAT);
return 2; /* path doesn't exist: nothing to do */
}
if (too_long) { /* GRR: should allow FAT extraction w/o EAs */
FPRINTF(stderr, "checkdir error: path too long: %s\n",
buildpathHPFS);
fflush(stderr);
free(buildpathHPFS);
free(buildpathFAT);
return 4; /* no room for filenames: fatal */
}
if (MKDIR(buildpathFAT, 0777) == -1) { /* create the directory */
FPRINTF(stderr, "checkdir error: can't create %s\n\
unable to process %s.\n", buildpathFAT, filename);
fflush(stderr);
free(buildpathHPFS);
free(buildpathFAT);
return 3; /* path didn't exist, tried to create, failed */
}
created_dir = TRUE;
/* only set EA if creating directory */
/* GRR: need trailing '/' before function call? */
if (longdirEA) {
#ifdef DEBUG
int e =
#endif
SetLongNameEA(buildpathFAT, pathcomp);
Trace((stderr, "APPEND_DIR: SetLongNameEA() returns %d\n", e));
}
} else if (!S_ISDIR(statbuf.st_mode)) {
FPRINTF(stderr, "checkdir error: %s exists but is not directory\n\
unable to process %s.\n", buildpathFAT, filename);
fflush(stderr);
free(buildpathHPFS);
free(buildpathFAT);
return 3; /* path existed but wasn't dir */
}
if (too_long) {
FPRINTF(stderr, "checkdir error: path too long: %s\n",
buildpathHPFS);
fflush(stderr);
free(buildpathHPFS);
free(buildpathFAT);
return 4; /* no room for filenames: fatal */
}
*endHPFS++ = '/';
*endFAT++ = '/';
*endHPFS = *endFAT = '\0';
Trace((stderr, "buildpathHPFS now = [%s]\n", buildpathHPFS));
Trace((stderr, "buildpathFAT now = [%s]\n", buildpathFAT));
return 0;
} /* end if (FUNCTION == APPEND_DIR) */
/*---------------------------------------------------------------------------
GETPATH: copy full FAT path to the string pointed at by pathcomp (want
filename to reflect name used on disk, not EAs; if full path is HPFS,
buildpathFAT and buildpathHPFS will be identical). Also free both paths.
---------------------------------------------------------------------------*/
if (FUNCTION == GETPATH) {
Trace((stderr, "getting and freeing FAT path [%s]\n", buildpathFAT));
Trace((stderr, "freeing HPFS path [%s]\n", buildpathHPFS));
strcpy(pathcomp, buildpathFAT);
free(buildpathFAT);
free(buildpathHPFS);
buildpathHPFS = buildpathFAT = endHPFS = endFAT = (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) {
char *p = pathcomp;
int error = 0;
Trace((stderr, "appending filename [%s]\n", pathcomp));
while ((*endHPFS = *p++) != '\0') { /* copy to HPFS filename */
++endHPFS;
if ((endHPFS-buildpathHPFS) >= FILNAMSIZ) {
*--endHPFS = '\0';
FPRINTF(stderr, "checkdir warning: path too long; truncating\n\
%s\n -> %s\n", filename, buildpathHPFS);
fflush(stderr);
error = 1; /* filename truncated */
}
}
/* GRR: how can longnameEA ever be set before this point??? we don't want
* to save the original name to EAs if user renamed it, do we?
*
* if (!longnameEA && ((longnameEA = !IsFileNameValid(name)) != 0))
*/
if (pInfo->vollabel || IsFileNameValid(buildpathHPFS)) {
longnameEA = FALSE;
p = pathcomp;
while ((*endFAT = *p++) != '\0') /* copy to FAT filename, too */
++endFAT;
} else {
longnameEA = TRUE;
if ((lastpathcomp = (char *)malloc(strlen(pathcomp)+1)) ==
(char *)NULL)
{
FPRINTF(stderr,
"checkdir warning: can't save longname EA: out of memory\n");
longnameEA = FALSE;
error = 1; /* can't set .LONGNAME extended attribute */
} else /* used and freed in close_outfile() */
strcpy(lastpathcomp, pathcomp);
map2fat(pathcomp, &endFAT); /* map, put in FAT fn, update endFAT */
}
Trace((stderr, "buildpathHPFS: %s\nbuildpathFAT: %s\n",
buildpathHPFS, buildpathFAT));
return error; /* could check for existence, prompt for new name... */
} /* end if (FUNCTION == APPEND_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 buildpathHPFS and buildpathFAT to "));
if ((buildpathHPFS = (char *)malloc(fnlen+rootlen+1)) == (char *)NULL)
return 10;
if ((buildpathFAT = (char *)malloc(fnlen+rootlen+1)) == (char *)NULL) {
free(buildpathHPFS);
return 10;
}
if (pInfo->vollabel) { /* use root or renamed path, but don't store */
/* GRR: for network drives, do strchr() and return IZ_VOL_LABEL if not [1] */
if (renamed_fullpath && pathcomp[1] == ':')
*buildpathHPFS = ToLower(*pathcomp);
else if (!renamed_fullpath && rootpath && rootpath[1] == ':')
*buildpathHPFS = ToLower(*rootpath);
else {
ULONG lMap;
DosQueryCurrentDisk(&nLabelDrive, &lMap);
*buildpathHPFS = (char)(nLabelDrive - 1 + 'a');
}
nLabelDrive = *buildpathHPFS - 'a' + 1; /* save for mapname() */
if (volflag == 0 || *buildpathHPFS < 'a' || /* no labels/bogus? */
(volflag == 1 && !isfloppy(nLabelDrive))) { /* -$: no fixed */
free(buildpathHPFS);
free(buildpathFAT);
return IZ_VOL_LABEL; /* skipping with message */
}
*buildpathHPFS = '\0';
} else if (renamed_fullpath) /* pathcomp = valid data */
strcpy(buildpathHPFS, pathcomp);
else if (rootlen > 0)
strcpy(buildpathHPFS, rootpath);
else
*buildpathHPFS = '\0';
endHPFS = buildpathHPFS;
endFAT = buildpathFAT;
while ((*endFAT = *endHPFS) != '\0') {
++endFAT;
++endHPFS;
}
Trace((stderr, "[%s]\n", buildpathHPFS));
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 (GetFileTime(pathcomp) == -1 ||
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 */
}
/* 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,
"checkdir: can't create extraction directory: %s\n",
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() */ /* more precisely, is it removable? */
/***********************/
static int isfloppy(nDrive)
int nDrive; /* 1 == A:, 2 == B:, etc. */
{
uch ParmList[1] = {0};
uch DataArea[1] = {0};
char Name[3];
HFILE handle;
#ifdef __32BIT__
ULONG rc;
ULONG action;
#else
USHORT rc;
UINT action;
#endif
Name[0] = (char) (nDrive + 'A' - 1);
Name[1] = ':';
Name[2] = 0;
rc = DosOpen(Name, &handle, &action, 0L, FILE_NORMAL, FILE_OPEN,
OPEN_FLAGS_DASD | OPEN_FLAGS_FAIL_ON_ERROR |
OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE, 0L);
if (rc == ERROR_NOT_READY) /* must be removable */
return TRUE;
else if (rc) { /* other error: do default a/b heuristic instead */
Trace((stderr, "error in DosOpen(DASD): guessing...\n", rc));
return (nDrive == 1 || nDrive == 2)? TRUE : FALSE;
}
rc = DosDevIOCtl(DataArea, sizeof(DataArea), ParmList, sizeof(ParmList),
DSK_BLOCKREMOVABLE, IOCTL_DISK, handle);
DosClose(handle);
if (rc) { /* again, just check for a/b */
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