windows-nt/Source/XPSP1/NT/base/win32/lz32/winlza/shstart.c

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2020-09-26 03:20:57 -05:00
/*
* pmdos.c
*
* Copyright (c) 1991, Microsoft Corporation
*
* DESCRIPTION
*
* This file is for support of program manager under NT Windows.
* This file is/was ported from pmdos.asm (program manager).
* It was in x86 asm code, and now is in ansi C.
* Some functions will be removed, due to they are only needed
* by DOS Windows.
*
* MODIFICATION HISTORY
* Initial Version: x/x/90 Author Unknown, since he didn't feel
* like commenting the code...
*
* NT 32b Version: 1/9/91 Jeff Pack
* Intitial port to begin.
*
* WARNING: since this is NOT for DOS, I'm making it soley 32bit aware.
* Following functions not ported
* IsRemovable() is in pmcomman.c (already ifdef'd in asm code)
* IsRemote() is in pmcomman.c (ditto!)
*
*/
#ifndef ORGCODE
#include <io.h>
#include <string.h>
#include <ctype.h>
#endif
#include "windows.h"
#include <port1632.h>
BOOL PathType(LPSTR);
DWORD FileTime(HFILE);
DWORD GetDOSErrorCode(VOID);
int GetCurrentDrive(VOID);
int w_GetCurrentDirectory(int, LPSTR);
int w_SetCurrentDirectory(LPSTR);
int DosDelete(LPSTR);
LPSTR lmemmove(LPSTR, LPSTR, WORD);
BOOL FAR PASCAL IsRemoteDrive(int);
BOOL FAR PASCAL IsRemovableDrive(int);
#define LOCALBUFFERSIZE 128
/*** PathType -- Determines if string denotes a directory or not.
*
*
*
* BOOL PathType(LPSTR pszFileString)
*
* ENTRY - LPSTR pszFileString - pointer to string to use to determine if directory
* or not.
* window, with focus.
* EXIT - int iReturnValue - 2 = is directory 1 = Is Not directory
*
* SYNOPSIS - This function takes a pointer to a string, calls OS to determine
* if string is, or is not a directory.
* WARNINGS - Cna't even see where this is called!
* EFFECTS -
*
*/
BOOL PathType(LPSTR lpszFileString)
{
LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
DWORD dwReturnedAttributes;
DWORD nBufferLength;
nBufferLength = strlen(lpszFileString) + 1;
/*alloc local, non-moveable, zero filled buffer*/
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<PathType> LocalAlloc FAILed\n");
#endif /* DBG */
return 0;
}
AnsiToOem(lpszFileString, lpszLocalBuffer);
/*get attributes of filestring*/
dwReturnedAttributes = GetFileAttributes(lpszLocalBuffer);
if(dwReturnedAttributes == -1){
#if DBG
OutputDebugString("<PathType> - GetFileAttributes() FAILed!\n");
#endif /* DBG */
LocalFree(lpszLocalBuffer);
return(0);
}
else{
/*and with directory attribute*/
dwReturnedAttributes = dwReturnedAttributes & FILE_ATTRIBUTE_DIRECTORY;
switch(dwReturnedAttributes){
case FILE_ATTRIBUTE_DIRECTORY:
LocalFree(lpszLocalBuffer);
return(2);
break;
default:
LocalFree(lpszLocalBuffer);
return(1);
}
}
}
/*** FileTime -- Gets time of last modification.
*
*
*
* DWORD FileTime(HFILE hFile)
*
* ENTRY - int hFile - file handle to access
*
* EXIT - LPWORD - which is gotten from lpTimeStamp = 0 (ERROR).
* or lpTimeStamp != 0 (value of timestamp)
*
* SYNOPSIS - calls GetFileTime() to get timestamp. If error, then
* lpTimeStamp = 0, else contains TimeStamp for file.
* WARNINGS -
* EFFECTS -
*
*/
DWORD FileTime(
HFILE hFile)
{
BOOL bReturnCode;
FILETIME CreationTime;
FILETIME LastAccessTime;
FILETIME LastWriteTime;
WORD FatTime = 0;
WORD FatDate;
bReturnCode = GetFileTime(LongToHandle(hFile), &CreationTime, &LastAccessTime,
&LastWriteTime);
/*
* Test return code
*/
if (bReturnCode == FALSE) {
return 0; /*set to zero, for error*/
}
/*
* Now convert 64bit time to DOS 16bit time
*/
FileTimeToDosDateTime( &LastWriteTime, &FatDate, &FatTime);
return FatTime;
}
/*** IsReadOnly -- determines if file is readonly or not.
*
*
*
* BOOL IsReadOnly(LPSTR lpszFileString)
*
* ENTRY - LPSTR lpszFileString - file name to use
*
* EXIT - BOOL xxx - returns (0) = not readonly (1) = read only
* or lpTimeStamp != 0 (value of timestamp)
*
* SYNOPSIS - calls GetAttributes, then tests if file is read only.
* WARNINGS -
* EFFECTS -
*
*/
BOOL IsReadOnly(LPSTR lpszFileString)
{
DWORD dwReturnedAttributes;
LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
DWORD nBufferLength;
nBufferLength = strlen(lpszFileString) + 1;
/*alloc local, non-moveable, zero filled buffer*/
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<IsReadOnly> LocalAlloc FAILed\n");
#endif /* DBG */
return 0;
}
AnsiToOem(lpszFileString, lpszLocalBuffer);
/*get attributes of filestring*/
dwReturnedAttributes = GetFileAttributes(lpszLocalBuffer);
if(dwReturnedAttributes == -1){
#if DBG
OutputDebugString("<IsReadOnly> - GetFileAttributes() FAILed!\n");
#endif /* DBG */
LocalFree(lpszLocalBuffer);
return FALSE;
} else {
/*AND with read_only attribute*/
dwReturnedAttributes = dwReturnedAttributes & FILE_ATTRIBUTE_READONLY;
switch(dwReturnedAttributes){
case FILE_ATTRIBUTE_READONLY:
LocalFree(lpszLocalBuffer);
return TRUE;
break;
default:
LocalFree(lpszLocalBuffer);
return FALSE;
}
}
}
/*** GetDOSErrorCode -- returns extended error code
*
*
*
* DWORD GetDOSErrorCode(VOID)
*
* ENTRY - VOID
*
* EXIT - DWORD - returned extended code.
*
* SYNOPSIS - calls GetLastError() to get error code from OS
* WARNINGS -
* EFFECTS -
*
*/
DWORD GetDOSErrorCode(VOID)
{
return( (int) GetLastError());
/*BUG BUG, pmgseg.c uses this from _lcreat() to determine if returned
5 (access denied) or 13 (invalid_data). So this need be tested
to see if win32 returns these.*/
}
/*** GetCurrentDrive -- get current drive number.
*
*
*
* int GetCurrentDrive(VOID)
*
* ENTRY - VOID
*
* EXIT - int CurrentDrive - drive number of current drive (0=a, etc).
*
* SYNOPSIS - calls GetCurrentDirectory, must parse returned string
* for either drive letter, or UNC path. If UNC I gotta
* somehow, covert UNC path to drive letter to drive number.
* WARNINGS -
* EFFECTS -
*
*/
int GetCurrentDrive(VOID)
{
/*BUG BUG, not DBCS aware!*/
DWORD nBufferLength = LOCALBUFFERSIZE;
DWORD dwReturnCode;
LPSTR lpszLocalBuffer;
int iDriveNumber;
/*alloc local, non-moveable, zero filled buffer*/
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<GetCurrentDrive> LocalAlloc FAILed\n");
#endif /* DBG */
return 0;
}
GetCurDrive1:
dwReturnCode = GetCurrentDirectory(nBufferLength, lpszLocalBuffer);
/*failed for reason other than bufferlength too small*/
if(dwReturnCode == 0){
#if DBG
OutputDebugString("<GetCurrentDrive> GetCurrentDirectory() FAILed\n");
#endif /* DBG */
return 0;
}
/*test for success, if dwReturnCode is > buffer, then need increase buffer*/
if(dwReturnCode > nBufferLength){
lpszLocalBuffer = LocalReAlloc(lpszLocalBuffer, nBufferLength + LOCALBUFFERSIZE, LMEM_ZEROINIT | LMEM_MOVEABLE);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<GetCurrentDrive> LocalAlloc FAILed\n");
#endif /* DBG */
return 0;
}
else{
nBufferLength += LOCALBUFFERSIZE;
}
goto GetCurDrive1;
}
/*finally lpszLocalBuffer has string containing current directory*/
/* now must parse string for ":" or "\\" for drive letter or UNC*/
/*if : then get drive letter, and convert to number a=0, b=1, etc.*/
/*if \\ then gotta enumerate net drives, to learn what drive letter*/
/*corresponds to that UNC path*/
/*check for drive letter*/
if(lpszLocalBuffer[1] == ':'){
/*is drive letter, proceed*/
if(isupper(lpszLocalBuffer[0])){
iDriveNumber = lpszLocalBuffer[0] - 'A'; /*convert letter > number*/
}
else{
iDriveNumber = lpszLocalBuffer[0] - 'a'; /*convert letter > number*/
}
}
else{
/*must be UNC path*/
/*BUG BUG need write code to convert UNC path */
#if DBG
OutputDebugString("<GetCurrentDrive> Got UNC path, didnt expect, and no code!\n");
#endif /* DBG */
}
LocalFree(lpszLocalBuffer);
return(iDriveNumber);
}
/*** SetCurrentDrive -- set current drive.
*
*
*
* int SetCurrentDrive(int iDrive)
*
* ENTRY - int iDrive - drive number to set as current drive
*
* EXIT - int xxx - under DOS would have returned # of logical drives.
* I can do this, but it's not used, if fact, no error
* checks are done on this return value.
*
* SYNOPSIS - calls SetCurrentDirectory to set current drive.
* WARNINGS - ALWAYS sets to root directory, since can't get cur dir
* on other than current working drive.
* EFFECTS -
*
*/
int SetCurrentDrive(int iDrive)
{
char cLocalBuffer[LOCALBUFFERSIZE] = "C:\\";
char cDriveLetter;
/*convert drive number (zero based) to letter*/
cDriveLetter = (char) iDrive + (char)'A';
cLocalBuffer[0] = cDriveLetter; /*set new drive in string*/
if(!SetCurrentDirectory(cLocalBuffer)){
/*call failed*/
#if DBG
OutputDebugString("<SetCurrentDrive> SetCurrentDirectory FAILed!\n");
#endif /* DBG */
return 0;
}
return(0);
}
/*** w_GetCurrentDirectory -- GetCurrent Working Directory
*
*
*
* int w_GetCurrentDirectory(int iDrive, LPSTR lpszCurrentDirectory)
*
* ENTRY - int iDrive - drive number to use as current drive.
* LPSTR lpszCurrentDirectory - pointer to return data to.
*
* EXIT - int iReturnCode - returns (0) if success
* LPSTR lpszCurrentDirectory - has curretn directory.
*
* SYNOPSIS - calls GetCurrentDirectory to get current directory.
* the original asm code, checked idrive for zero, if so
* then calls GetCurrentDrive. Under win32, is not neccessary,
* since GetCUrrentDirectory() returns current drive.
* Since it checks this, it means then that other than current
* drive can be checked, yet win32 doesnt allow this, so I have to
* code in a debug check, if iDrive != current drive.
* WARNINGS - win32 doesn't allow multiple cur dirs across drives.
* EFFECTS -
*
*/
int w_GetCurrentDirectory(int iDrive, LPSTR lpszCurrentDirectory)
{
/*first see if iDrive == 0, if so then only need call GetCurrentDirectory*/
/*if non-zero, then could be current drive, OR another drive.*/
/*THIS IS NOT ALLOWED!*/
/*BUG BUG, not DBCS aware!*/
DWORD nBufferLength = LOCALBUFFERSIZE;
DWORD dwReturnCode;
LPSTR lpszLocalBuffer;
int iDriveNumber;
/*alloc local, non-moveable, zero filled buffer*/
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<w_GetCurrentDirectory> LocalAlloc FAILed\n");
#endif /* DBG */
return(1);
}
GetCurDir1:
dwReturnCode = GetCurrentDirectory(nBufferLength, lpszLocalBuffer);
/*failed for reason other than bufferlength too small*/
if(dwReturnCode == 0){
#if DBG
OutputDebugString("<w_GetCurrentDirectory> GetCurrentDirectory() FAILed\n");
#endif /* DBG */
LocalFree(lpszLocalBuffer);
return(1);
}
/*test for success, if dwReturnCode is > buffer, then need increase buffer*/
if(dwReturnCode > nBufferLength){
lpszLocalBuffer = LocalReAlloc(lpszLocalBuffer, nBufferLength + LOCALBUFFERSIZE, LMEM_ZEROINIT | LMEM_MOVEABLE);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<w_GetCurrentDirectory> LocalAlloc FAILed\n");
#endif /* DBG */
LocalFree(lpszLocalBuffer);
return(1);
}
else{
nBufferLength += LOCALBUFFERSIZE;
}
goto GetCurDir1;
}
/*now I have string that contains EITHER current drive in a drive letter*/
/*or current drive by a UNC name*/
/*BUG BUG UNC name check uncoded, since I have to go from UNC name to drive letter*/
/*debug code, to make sure iDrive == current drive*/
/*see if drive letter based string*/
if(lpszLocalBuffer[1] == ':'){
/*is Drive letter based!*/
/*never know case of returned string from kernel*/
if(isupper(lpszLocalBuffer[0])){
iDriveNumber = lpszLocalBuffer[0] - 'A';
}
else{
iDriveNumber = lpszLocalBuffer[0] - 'a';
}
/*DEBUG make sure that we are indeed setting a new drive */
/* remember that iDrive == 0 means use current drive!*/
if(iDrive == iDriveNumber || iDrive == 0){
/*is current drive and drive letter based, set to after "x:\"*/
strcpy(lpszCurrentDirectory, lpszLocalBuffer); /*copy directory to pointer*/
}
else{ /* is different drive, or not using current drive (== 0)*/
SetCurrentDrive(iDriveNumber); /*set new drive "<iDrive>:\" */
/*now that new drive/dir is set, return current dir*/
/* BUG BUG, because setting drive, overides cur dir, I return*/
/* "<newdrive>:\" */
strcpy(lpszCurrentDirectory, "c:\\");
lpszCurrentDirectory[0] = (char) (iDriveNumber + 'a'); /*set new drive*/
}
}
else{
/*is NOT drive letter based*/
/* BUG BUG need write code to parse UNC, and return only the path*/
/* BUG BUGalso need check to see if iDrive == UNC drive, so I gotta*/
/* convert UNC path to drive, and compare*/
#if DBG
OutputDebugString("<w_GetCurrentDirectory> Took path for UNC, and no code!\n");
#endif /* DBG */
LocalFree(lpszLocalBuffer);
return(1);
}
LocalFree(lpszLocalBuffer);
return(0); /*success*/
}
/*** w_SetCurrentDirectory -- SetCurrent Working Directory and drive
*
* int w_SetCurrentDirectory(LPSTR lpszCurrentDirectory)
*
* ENTRY - LPSTR lpszCurrentDirectory - string to set current drive/dir to
*
* EXIT - int iReturnCode - returns (0) if success
*
* SYNOPSIS - calls SetCurrentDirectory to set current directory and drive.
* WARNINGS -
* EFFECTS -
*
*/
int w_SetCurrentDirectory(LPSTR lpszCurrentDirectory)
{
DWORD dwReturnCode;
dwReturnCode = SetCurrentDirectory(lpszCurrentDirectory);
if(dwReturnCode == 0){
#if DBG
OutputDebugString("<w_SetCurrentDirectory> SetCurrentDirectory FAILed!\n");
#endif /* DBG */
return(1);
}
return(0); /*success*/
}
/*** DosDelete -- Delete named file.
*
* int DosDelete(LPSTR lpszFileToDelete)
*
* ENTRY - LPSTR lpszFileToDelete - filename to delete.
*
* EXIT - int xxx - returns (0) if success
*
* SYNOPSIS - calls win32 DeleteFile.
* WARNINGS -
* EFFECTS -
*
*/
int DosDelete(LPSTR lpszFileToDelete)
{
BOOL bReturnCode;
LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
DWORD nBufferLength;
nBufferLength = strlen(lpszFileToDelete) + 1;
/*alloc local, non-moveable, zero filled buffer*/
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<DosDelete> LocalAlloc FAILed\n");
#endif /* DBG */
return 1;
}
AnsiToOem(lpszFileToDelete, lpszLocalBuffer);
bReturnCode = DeleteFile(lpszLocalBuffer);
LocalFree(lpszLocalBuffer);
if(bReturnCode){
return(0);
}
else{
return(1);
}
}
/*** DosRename -- Rename file.
*
* int DosRename(LPSTR lpszOrgFileName, LPSTR lpszNewFileName)
*
* ENTRY - LPSTR lpszOrgFileName - origianl filename.
* LPSTR lpszNewFileName - New filename.
*
* EXIT - int xxx - returns (0) if success
*
* SYNOPSIS - calls win32 MoveFile.
* WARNINGS -
* EFFECTS -
*
*/
int DosRename(LPSTR lpszOrgFileName, LPSTR lpszNewFileName)
{
BOOL bReturnCode;
LPSTR lpszLocalBuffer; /*local buffer for AnsiToOem()*/
LPSTR lpszLocalBuffer1; /*local buffer for AnsiToOem()*/
DWORD nBufferLength;
DWORD nBufferLength1;
nBufferLength = strlen(lpszOrgFileName) + 1;
nBufferLength1 = strlen(lpszNewFileName) + 1;
/*alloc local, non-moveable, zero filled buffer*/
lpszLocalBuffer = LocalAlloc(LMEM_ZEROINIT, nBufferLength);
if(lpszLocalBuffer == NULL){
#if DBG
OutputDebugString("<DosRename> LocalAlloc FAILed\n");
#endif /* DBG */
return 1;
}
lpszLocalBuffer1 = LocalAlloc(LMEM_ZEROINIT, nBufferLength1);
if(lpszLocalBuffer1 == NULL){
OutputDebugString("<DosRename> LocalAlloc FAILed\n");
}
AnsiToOem(lpszOrgFileName, lpszLocalBuffer);
AnsiToOem(lpszNewFileName, lpszLocalBuffer1);
/*rename file*/
bReturnCode = MoveFile(lpszLocalBuffer, lpszLocalBuffer1);
LocalFree(lpszLocalBuffer);
LocalFree(lpszLocalBuffer1);
if(bReturnCode){
return(0);
}
else{
return(1);
}
}
/*** lmemmove -- move memory.
*
* LPSTR lmemmove(LPSTR lpszDst, LPSTR lpszSrc, WORD wCount)
*
* ENTRY - LPSTR lpszDst - destination
* LPSTR lpszSrc - source
* WORD wCount - number of chars to move.
*
* EXIT - LPSTR lpszDst - returns lpszDst.
*
* SYNOPSIS - calls c runtime. Done cause they hacked lmemove to asm.
* WARNINGS -
* EFFECTS -
*
*/
LPSTR lmemmove(LPSTR lpszDst, LPSTR lpszSrc, WORD wCount)
{
return(memmove(lpszDst, lpszSrc, wCount));
}