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|
/*
* tclWinFile.c --
*
* This file contains temporary wrappers around UNIX file handling
* functions. These wrappers map the UNIX functions to Win32 HANDLE-style
* files, which can be manipulated through the Win32 console redirection
* interfaces.
*
* Copyright (c) 1995-1998 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclWinFile.c,v 1.1.2.3 1998/10/06 00:42:17 stanton Exp $
*/
#include "tclWinInt.h"
#include <sys/stat.h>
#include <shlobj.h>
#include <lmaccess.h> /* For TclpGetUserHome(). */
static time_t ToCTime(FILETIME fileTime);
typedef NET_API_STATUS NET_API_FUNCTION NETUSERGETINFOPROC
(LPWSTR servername, LPWSTR username, DWORD level, LPBYTE *bufptr);
typedef NET_API_STATUS NET_API_FUNCTION NETAPIBUFFERFREEPROC
(LPVOID Buffer);
typedef NET_API_STATUS NET_API_FUNCTION NETGETDCNAMEPROC
(LPWSTR servername, LPWSTR domainname, LPBYTE *bufptr);
/*
*----------------------------------------------------------------------
*
* Tcl_FindExecutable --
*
* This procedure computes the absolute path name of the current
* application, given its argv[0] value.
*
* Results:
* None.
*
* Side effects:
* The variable tclExecutableName gets filled in with the file
* name for the application, if we figured it out. If we couldn't
* figure it out, Tcl_FindExecutable is set to NULL.
*
*----------------------------------------------------------------------
*/
void
Tcl_FindExecutable(argv0)
CONST char *argv0; /* The value of the application's argv[0]. */
{
Tcl_DString ds;
WCHAR wName[MAX_PATH];
TclInitSubsystems(argv0);
if (argv0 == NULL) {
return;
}
if (tclExecutableName != NULL) {
ckfree((char *) tclExecutableName);
tclExecutableName = NULL;
}
/*
* Under Windows we ignore argv0, and return the path for the file used to
* create this process.
*/
(*tclWinProcs->getModuleFileNameProc)(NULL, wName, MAX_PATH);
Tcl_WinTCharToUtf((TCHAR *) wName, -1, &ds);
tclExecutableName = ckalloc((unsigned) (Tcl_DStringLength(&ds) + 1));
strcpy(tclExecutableName, Tcl_DStringValue(&ds));
TclWinNoBackslash(tclExecutableName);
Tcl_DStringFree(&ds);
}
/*
*----------------------------------------------------------------------
*
* TclpMatchFiles --
*
* This routine is used by the globbing code to search a
* directory for all files which match a given pattern.
*
* Results:
* If the tail argument is NULL, then the matching files are
* added to the the interp's result. Otherwise, TclDoGlob is called
* recursively for each matching subdirectory. The return value
* is a standard Tcl result indicating whether an error occurred
* in globbing.
*
* Side effects:
* None.
*
*---------------------------------------------------------------------- */
int
TclpMatchFiles(interp, separators, dirPtr, pattern, tail)
Tcl_Interp *interp; /* Interpreter to receive results. */
char *separators; /* Directory separators to pass to TclDoGlob. */
Tcl_DString *dirPtr; /* Contains path to directory to search. */
char *pattern; /* Pattern to match against. */
char *tail; /* Pointer to end of pattern. Tail must
* point to a location in pattern. Must not
* point to a static string. */
{
char drivePat[] = "?:\\";
const char *message;
char *dir, *newPattern, *root;
int matchDotFiles;
int dirLength, result = TCL_OK;
Tcl_DString dirString, patternString;
DWORD attr, volFlags;
HANDLE handle;
WIN32_FIND_DATAT data;
BOOL found;
Tcl_DString ds;
TCHAR *nativeName;
/*
* Convert the path to normalized form since some interfaces only
* accept backslashes. Also, ensure that the directory ends with a
* separator character.
*/
dirLength = Tcl_DStringLength(dirPtr);
Tcl_DStringInit(&dirString);
if (dirLength == 0) {
Tcl_DStringAppend(&dirString, ".\\", 2);
} else {
char *p;
Tcl_DStringAppend(&dirString, Tcl_DStringValue(dirPtr),
Tcl_DStringLength(dirPtr));
for (p = Tcl_DStringValue(&dirString); *p != '\0'; p++) {
if (*p == '/') {
*p = '\\';
}
}
p--;
if ((*p != '\\') && (*p != ':')) {
Tcl_DStringAppend(&dirString, "\\", 1);
}
}
dir = Tcl_DStringValue(&dirString);
/*
* First verify that the specified path is actually a directory.
*/
nativeName = Tcl_WinUtfToTChar(dir, Tcl_DStringLength(&dirString), &ds);
attr = (*tclWinProcs->getFileAttributesProc)(nativeName);
Tcl_DStringFree(&ds);
if ((attr == 0xffffffff) || ((attr & FILE_ATTRIBUTE_DIRECTORY) == 0)) {
Tcl_DStringFree(&dirString);
return TCL_OK;
}
/*
* Next check the volume information for the directory to see whether
* comparisons should be case sensitive or not. If the root is null, then
* we use the root of the current directory. If the root is just a drive
* specifier, we use the root directory of the given drive.
*/
switch (Tcl_GetPathType(dir)) {
case TCL_PATH_RELATIVE:
found = GetVolumeInformationA(NULL, NULL, 0, NULL, NULL,
&volFlags, NULL, 0);
break;
case TCL_PATH_VOLUME_RELATIVE:
if (dir[0] == '\\') {
root = NULL;
} else {
root = drivePat;
*root = dir[0];
}
found = GetVolumeInformationA(root, NULL, 0, NULL, NULL,
&volFlags, NULL, 0);
break;
case TCL_PATH_ABSOLUTE:
if (dir[1] == ':') {
root = drivePat;
*root = dir[0];
found = GetVolumeInformationA(root, NULL, 0, NULL, NULL,
&volFlags, NULL, 0);
} else if (dir[1] == '\\') {
char *p;
p = strchr(dir + 2, '\\');
p = strchr(p + 1, '\\');
p++;
nativeName = Tcl_WinUtfToTChar(dir, p - dir, &ds);
found = (*tclWinProcs->getVolumeInformationProc)(nativeName,
NULL, 0, NULL, NULL, &volFlags, NULL, 0);
Tcl_DStringFree(&ds);
}
break;
}
if (found == 0) {
message = "couldn't read volume information for \"";
goto error;
}
/*
* In Windows, although some volumes may support case sensitivity, Windows
* doesn't honor case. So in globbing we need to ignore the case
* of file names.
*/
Tcl_DStringInit(&patternString);
newPattern = Tcl_DStringAppend(&patternString, pattern, tail - pattern);
if ((volFlags & FS_CASE_SENSITIVE) == 0) {
Tcl_UtfToLower(newPattern);
}
/*
* We need to check all files in the directory, so append a *.*
* to the path.
*/
dir = Tcl_DStringAppend(&dirString, "*.*", 3);
nativeName = Tcl_WinUtfToTChar(dir, -1, &ds);
handle = (*tclWinProcs->findFirstFileProc)(nativeName, &data);
Tcl_DStringFree(&ds);
if (handle == INVALID_HANDLE_VALUE) {
message = "couldn't read directory \"";
goto error;
}
/*
* Clean up the tail pointer. Leave the tail pointing to the
* first character after the path separator or NULL.
*/
if (*tail == '\\') {
tail++;
}
if (*tail == '\0') {
tail = NULL;
} else {
tail++;
}
/*
* Check to see if the pattern needs to compare with dot files.
*/
if ((newPattern[0] == '.')
|| ((pattern[0] == '\\') && (pattern[1] == '.'))) {
matchDotFiles = 1;
} else {
matchDotFiles = 0;
}
/*
* Now iterate over all of the files in the directory.
*/
for (found = 1; found != 0;
found = (*tclWinProcs->findNextFileProc)(handle, &data)) {
TCHAR *nativeMatchResult;
char *name;
if (tclWinProcs->useWide) {
nativeName = (TCHAR *) data.w.cFileName;
} else {
nativeName = (TCHAR *) data.a.cFileName;
}
name = Tcl_WinTCharToUtf(nativeName, -1, &ds);
/*
* Check to see if the file matches the pattern. We need to convert
* the file name to lower case for comparison purposes. Note that we
* are ignoring the case sensitivity flag because Windows doesn't honor
* case even if the volume is case sensitive. If the volume also
* doesn't preserve case, then we return the lower case form of the
* name, otherwise we return the system form.
*/
if ((volFlags & FS_CASE_SENSITIVE) == 0) {
Tcl_UtfToLower(name);
}
nativeMatchResult = NULL;
if ((matchDotFiles == 0) && (name[0] == '.')) {
/*
* Ignore hidden files.
*/
} else if (Tcl_StringMatch(name, newPattern) != 0) {
nativeMatchResult = nativeName;
}
Tcl_DStringFree(&ds);
if (nativeMatchResult == NULL) {
continue;
}
/*
* If the file matches, then we need to process the remainder of the
* path. If there are more characters to process, then ensure matching
* files are directories and call TclDoGlob. Otherwise, just add the
* file to the result.
*/
name = Tcl_WinTCharToUtf(nativeMatchResult, -1, &ds);
if ((volFlags & FS_CASE_IS_PRESERVED) == 0) {
Tcl_UtfToLower(name);
}
Tcl_DStringAppend(dirPtr, name, -1);
Tcl_DStringFree(&ds);
if (tail == NULL) {
Tcl_AppendElement(interp, Tcl_DStringValue(dirPtr));
} else {
nativeName = Tcl_WinUtfToTChar(Tcl_DStringValue(dirPtr),
Tcl_DStringLength(dirPtr), &ds);
attr = (*tclWinProcs->getFileAttributesProc)(nativeName);
Tcl_DStringFree(&ds);
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
Tcl_DStringAppend(dirPtr, "/", 1);
result = TclDoGlob(interp, separators, dirPtr, tail);
if (result != TCL_OK) {
break;
}
}
}
Tcl_DStringSetLength(dirPtr, dirLength);
}
FindClose(handle);
Tcl_DStringFree(&dirString);
Tcl_DStringFree(&patternString);
return result;
error:
Tcl_DStringFree(&dirString);
TclWinConvertError(GetLastError());
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, message, Tcl_DStringValue(dirPtr), "\": ",
Tcl_PosixError(interp), (char *) NULL);
return TCL_ERROR;
}
/*
*----------------------------------------------------------------------
*
* TclpGetUserHome --
*
* This function takes the passed in user name and finds the
* corresponding home directory specified in the password file.
*
* Results:
* The result is a pointer to a string specifying the user's home
* directory, or NULL if the user's home directory could not be
* determined. Storage for the result string is allocated in
* bufferPtr; the caller must call Tcl_DStringFree() when the result
* is no longer needed.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
TclpGetUserHome(name, bufferPtr)
CONST char *name; /* User name for desired home directory. */
Tcl_DString *bufferPtr; /* Uninitialized or free DString filled
* with name of user's home directory. */
{
char *result;
HINSTANCE netapiInst;
result = NULL;
Tcl_DStringInit(bufferPtr);
netapiInst = LoadLibraryA("netapi32.dll");
if (netapiInst != NULL) {
NETAPIBUFFERFREEPROC *netApiBufferFreeProc;
NETGETDCNAMEPROC *netGetDCNameProc;
NETUSERGETINFOPROC *netUserGetInfoProc;
netApiBufferFreeProc = (NETAPIBUFFERFREEPROC *)
GetProcAddress(netapiInst, "NetApiBufferFree");
netGetDCNameProc = (NETGETDCNAMEPROC *)
GetProcAddress(netapiInst, "NetGetDCName");
netUserGetInfoProc = (NETUSERGETINFOPROC *)
GetProcAddress(netapiInst, "NetUserGetInfo");
if ((netUserGetInfoProc != NULL) && (netGetDCNameProc != NULL)
&& (netApiBufferFreeProc != NULL)) {
USER_INFO_1 *uiPtr;
Tcl_DString ds;
int nameLen, badDomain;
char *domain;
WCHAR *wName, *wHomeDir, *wDomain;
WCHAR buf[MAX_PATH];
badDomain = 0;
nameLen = -1;
wDomain = NULL;
domain = strchr(name, '@');
if (domain != NULL) {
Tcl_DStringInit(&ds);
wName = TclUtfToUniCharDString(domain + 1, -1, &ds);
badDomain = (*netGetDCNameProc)(NULL, wName,
(LPBYTE *) &wDomain);
Tcl_DStringFree(&ds);
nameLen = domain - name;
}
if (badDomain == 0) {
Tcl_DStringInit(&ds);
wName = TclUtfToUniCharDString(name, nameLen, &ds);
if ((*netUserGetInfoProc)(wDomain, wName, 1,
(LPBYTE *) &uiPtr) == 0) {
wHomeDir = uiPtr->usri1_home_dir;
if ((wHomeDir != NULL) && (wHomeDir[0] != L'\0')) {
TclUniCharToUtfDString(wHomeDir, lstrlenW(wHomeDir),
bufferPtr);
} else {
/*
* User exists but has no home dir. Return
* "{Windows Drive}:/users/default".
*/
GetWindowsDirectoryW(buf, MAX_PATH);
TclUniCharToUtfDString(buf, 2, bufferPtr);
Tcl_DStringAppend(bufferPtr, "/users/default", -1);
}
result = Tcl_DStringValue(bufferPtr);
(*netApiBufferFreeProc)((void *) uiPtr);
}
Tcl_DStringFree(&ds);
}
if (wDomain != NULL) {
(*netApiBufferFreeProc)((void *) wDomain);
}
}
FreeLibrary(netapiInst);
}
if (result == NULL) {
/*
* Look in the "Password Lists" section of system.ini for the
* local user. There are also entries in that section that begin
* with a "*" character that are used by Windows for other
* purposes; ignore user names beginning with a "*".
*/
char buf[MAX_PATH];
if (name[0] != '*') {
if (GetPrivateProfileStringA("Password Lists", name, "", buf,
MAX_PATH, "system.ini") > 0) {
/*
* User exists, but there is no such thing as a home
* directory in system.ini. Return "{Windows drive}:/".
*/
GetWindowsDirectoryA(buf, MAX_PATH);
Tcl_DStringAppend(bufferPtr, buf, 3);
result = Tcl_DStringValue(bufferPtr);
}
}
}
return result;
}
/*
*---------------------------------------------------------------------------
*
* TclpAccess --
*
* This function replaces the library version of access(), fixing the
* following bugs:
*
* 1. access() returns that all files have execute permission.
*
* Results:
* See access documentation.
*
* Side effects:
* See access documentation.
*
*---------------------------------------------------------------------------
*/
int
TclpAccess(
CONST char *path, /* Path of file to access (UTF-8). */
int mode) /* Permission setting. */
{
Tcl_DString ds;
TCHAR *nativePath;
DWORD attr;
nativePath = Tcl_WinUtfToTChar(path, -1, &ds);
attr = (*tclWinProcs->getFileAttributesProc)(nativePath);
Tcl_DStringFree(&ds);
if (attr == 0xffffffff) {
/*
* File doesn't exist.
*/
TclWinConvertError(GetLastError());
return -1;
}
if ((mode & W_OK) && (attr & FILE_ATTRIBUTE_READONLY)) {
/*
* File is not writable.
*/
Tcl_SetErrno(EACCES);
return -1;
}
if (mode & X_OK) {
CONST char *p;
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
/*
* Directories are always executable.
*/
return 0;
}
p = strrchr(path, '.');
if (p != NULL) {
p++;
if ((stricmp(p, "exe") == 0)
|| (stricmp(p, "com") == 0)
|| (stricmp(p, "bat") == 0)) {
/*
* File that ends with .exe, .com, or .bat is executable.
*/
return 0;
}
}
Tcl_SetErrno(EACCES);
return -1;
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* TclpChdir --
*
* This function replaces the library version of chdir().
*
* Results:
* See chdir() documentation.
*
* Side effects:
* See chdir() documentation.
*
*----------------------------------------------------------------------
*/
int
TclpChdir(path)
CONST char *path; /* Path to new working directory (UTF-8). */
{
int result;
Tcl_DString ds;
TCHAR *nativePath;
nativePath = Tcl_WinUtfToTChar(path, -1, &ds);
result = (*tclWinProcs->setCurrentDirectoryProc)(nativePath);
Tcl_DStringFree(&ds);
if (result == 0) {
TclWinConvertError(GetLastError());
return -1;
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* TclpGetCwd --
*
* This function replaces the library version of getcwd().
*
* Results:
* The result is a pointer to a string specifying the current
* directory, or NULL if the current directory could not be
* determined. If NULL is returned, an error message is left in the
* interp's result. Storage for the result string is allocated in
* bufferPtr; the caller must call Tcl_DStringFree() when the result
* is no longer needed.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
TclpGetCwd(interp, bufferPtr)
Tcl_Interp *interp; /* If non-NULL, used for error reporting. */
Tcl_DString *bufferPtr; /* Uninitialized or free DString filled
* with name of current directory. */
{
WCHAR buffer[MAX_PATH];
char *p;
if ((*tclWinProcs->getCurrentDirectoryProc)(MAX_PATH, buffer) == 0) {
TclWinConvertError(GetLastError());
if (interp != NULL) {
Tcl_AppendResult(interp,
"error getting working directory name: ",
Tcl_PosixError(interp), (char *) NULL);
}
return NULL;
}
/*
* Watch for the wierd Windows c:\\UNC syntax.
*/
if (tclWinProcs->useWide) {
WCHAR *native;
native = (WCHAR *) buffer;
if ((native[0] != '\0') && (native[1] == ':')
&& (native[2] == '\\') && (native[3] == '\\')) {
native += 2;
}
Tcl_WinTCharToUtf((TCHAR *) native, -1, bufferPtr);
} else {
char *native;
native = (char *) buffer;
if ((native[0] != '\0') && (native[1] == ':')
&& (native[2] == '\\') && (native[3] == '\\')) {
native += 2;
}
Tcl_WinTCharToUtf((TCHAR *) native, -1, bufferPtr);
}
/*
* Convert to forward slashes for easier use in scripts.
*/
for (p = Tcl_DStringValue(bufferPtr); *p != '\0'; p++) {
if (*p == '\\') {
*p = '/';
}
}
return Tcl_DStringValue(bufferPtr);
}
/*
*----------------------------------------------------------------------
*
* TclpStat --
*
* This function replaces the library version of stat(), fixing
* the following bugs:
*
* 1. stat("c:") returns an error.
* 2. Borland stat() return time in GMT instead of localtime.
* 3. stat("\\server\mount") would return error.
* 4. Accepts slashes or backslashes.
* 5. st_dev and st_rdev were wrong for UNC paths.
*
* Results:
* See stat documentation.
*
* Side effects:
* See stat documentation.
*
*----------------------------------------------------------------------
*/
int
TclpStat(path, statPtr)
CONST char *path; /* Path of file to stat (UTF-8). */
struct stat *statPtr; /* Filled with results of stat call. */
{
Tcl_DString ds;
TCHAR *nativePath;
WIN32_FIND_DATAT data;
HANDLE handle;
DWORD attr;
WCHAR nativeFullPath[MAX_PATH];
TCHAR *nativePart;
char *p, *fullPath;
int dev, mode;
/*
* Eliminate file names containing wildcard characters, or subsequent
* call to FindFirstFile() will expand them, matching some other file.
*/
if (strpbrk(path, "?*") != NULL) {
Tcl_SetErrno(ENOENT);
return -1;
}
nativePath = Tcl_WinUtfToTChar(path, -1, &ds);
handle = (*tclWinProcs->findFirstFileProc)(nativePath, &data);
if (handle == INVALID_HANDLE_VALUE) {
/*
* FindFirstFile() doesn't work on root directories, so call
* GetFileAttributes() to see if the specified file exists.
*/
attr = (*tclWinProcs->getFileAttributesProc)(nativePath);
if (attr == 0xffffffff) {
Tcl_DStringFree(&ds);
Tcl_SetErrno(ENOENT);
return -1;
}
/*
* Make up some fake information for this file. It has the
* correct file attributes and a time of 0.
*/
memset(&data, 0, sizeof(data));
data.a.dwFileAttributes = attr;
} else {
FindClose(handle);
}
(*tclWinProcs->getFullPathNameProc)(nativePath, MAX_PATH, nativeFullPath,
&nativePart);
Tcl_DStringFree(&ds);
fullPath = Tcl_WinTCharToUtf((TCHAR *) nativeFullPath, -1, &ds);
dev = -1;
if ((fullPath[0] == '\\') && (fullPath[1] == '\\')) {
char *p;
DWORD dw;
TCHAR *nativeVol;
Tcl_DString volString;
p = strchr(fullPath + 2, '\\');
p = strchr(p + 1, '\\');
if (p == NULL) {
/*
* Add terminating backslash to fullpath or
* GetVolumeInformation() won't work.
*/
fullPath = Tcl_DStringAppend(&ds, "\\", 1);
p = fullPath + Tcl_DStringLength(&ds);
} else {
p++;
}
nativeVol = Tcl_WinUtfToTChar(fullPath, p - fullPath, &volString);
dw = (DWORD) -1;
(*tclWinProcs->getVolumeInformationProc)(nativeVol, NULL, 0, &dw,
NULL, NULL, NULL, 0);
/*
* GetFullPathName() turns special devices like "NUL" into "\\.\NUL",
* but GetVolumeInformation() returns failure for "\\.\NUL". This
* will cause "NUL" to get a drive number of -1, which makes about
* as much sense as anything since the special devices don't live on
* any drive.
*/
dev = dw;
Tcl_DStringFree(&volString);
} else if ((fullPath[0] != '\0') && (fullPath[1] == ':')) {
dev = Tcl_UniCharToLower(fullPath[0]) - 'a';
}
Tcl_DStringFree(&ds);
attr = data.a.dwFileAttributes;
mode = (attr & FILE_ATTRIBUTE_DIRECTORY) ? S_IFDIR | S_IEXEC : S_IFREG;
mode |= (attr & FILE_ATTRIBUTE_READONLY) ? S_IREAD : S_IREAD | S_IWRITE;
p = strrchr(path, '.');
if (p != NULL) {
if ((lstrcmpiA(p, ".exe") == 0)
|| (lstrcmpiA(p, ".com") == 0)
|| (lstrcmpiA(p, ".bat") == 0)
|| (lstrcmpiA(p, ".pif") == 0)) {
mode |= S_IEXEC;
}
}
/*
* Propagate the S_IREAD, S_IWRITE, S_IEXEC bits to the group and
* other positions.
*/
mode |= (mode & 0x0700) >> 3;
mode |= (mode & 0x0700) >> 6;
statPtr->st_dev = (dev_t) dev;
statPtr->st_ino = 0;
statPtr->st_mode = (unsigned short) mode;
statPtr->st_nlink = 1;
statPtr->st_uid = 0;
statPtr->st_gid = 0;
statPtr->st_rdev = (dev_t) dev;
statPtr->st_size = data.a.nFileSizeLow;
statPtr->st_atime = ToCTime(data.a.ftLastAccessTime);
statPtr->st_mtime = ToCTime(data.a.ftLastWriteTime);
statPtr->st_ctime = ToCTime(data.a.ftCreationTime);
return 0;
}
static time_t
ToCTime(
FILETIME fileTime) /* UTC Time to convert to local time_t. */
{
FILETIME localFileTime;
SYSTEMTIME systemTime;
struct tm tm;
if (FileTimeToLocalFileTime(&fileTime, &localFileTime) == 0) {
return 0;
}
if (FileTimeToSystemTime(&localFileTime, &systemTime) == 0) {
return 0;
}
tm.tm_sec = systemTime.wSecond;
tm.tm_min = systemTime.wMinute;
tm.tm_hour = systemTime.wHour;
tm.tm_mday = systemTime.wDay;
tm.tm_mon = systemTime.wMonth - 1;
tm.tm_year = systemTime.wYear - 1900;
tm.tm_wday = 0;
tm.tm_yday = 0;
tm.tm_isdst = -1;
return mktime(&tm);
}
#if 0
/*
* Borland's stat doesn't take into account localtime.
*/
if ((result == 0) && (buf->st_mtime != 0)) {
TIME_ZONE_INFORMATION tz;
int time, bias;
time = GetTimeZoneInformation(&tz);
bias = tz.Bias;
if (time == TIME_ZONE_ID_DAYLIGHT) {
bias += tz.DaylightBias;
}
bias *= 60;
buf->st_atime -= bias;
buf->st_ctime -= bias;
buf->st_mtime -= bias;
}
#endif
#if 0
/*
*-------------------------------------------------------------------------
*
* TclWinResolveShortcut --
*
* Resolve a potential Windows shortcut to get the actual file or
* directory in question.
*
* Results:
* Returns 1 if the shortcut could be resolved, or 0 if there was
* an error or if the filename was not a shortcut.
* If bufferPtr did hold the name of a shortcut, it is modified to
* hold the resolved target of the shortcut instead.
*
* Side effects:
* Loads and unloads OLE package to determine if filename refers to
* a shortcut.
*
*-------------------------------------------------------------------------
*/
int
TclWinResolveShortcut(bufferPtr)
Tcl_DString *bufferPtr; /* Holds name of file to resolve. On
* return, holds resolved file name. */
{
HRESULT hres;
IShellLink *psl;
IPersistFile *ppf;
WIN32_FIND_DATA wfd;
WCHAR wpath[MAX_PATH];
char *path, *ext;
char realFileName[MAX_PATH];
/*
* Windows system calls do not automatically resolve
* shortcuts like UNIX automatically will with symbolic links.
*/
path = Tcl_DStringValue(bufferPtr);
ext = strrchr(path, '.');
if ((ext == NULL) || (stricmp(ext, ".lnk") != 0)) {
return 0;
}
CoInitialize(NULL);
path = Tcl_DStringValue(bufferPtr);
realFileName[0] = '\0';
hres = CoCreateInstance(&CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
&IID_IShellLink, &psl);
if (SUCCEEDED(hres)) {
hres = psl->lpVtbl->QueryInterface(psl, &IID_IPersistFile, &ppf);
if (SUCCEEDED(hres)) {
MultiByteToWideChar(CP_ACP, 0, path, -1, wpath, sizeof(wpath));
hres = ppf->lpVtbl->Load(ppf, wpath, STGM_READ);
if (SUCCEEDED(hres)) {
hres = psl->lpVtbl->Resolve(psl, NULL,
SLR_ANY_MATCH | SLR_NO_UI);
if (SUCCEEDED(hres)) {
hres = psl->lpVtbl->GetPath(psl, realFileName, MAX_PATH,
&wfd, 0);
}
}
ppf->lpVtbl->Release(ppf);
}
psl->lpVtbl->Release(psl);
}
CoUninitialize();
if (realFileName[0] != '\0') {
Tcl_DStringSetLength(bufferPtr, 0);
Tcl_DStringAppend(bufferPtr, realFileName, -1);
return 1;
}
return 0;
}
#endif
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