195 lines
3.7 KiB
C
195 lines
3.7 KiB
C
/*++
|
||
|
||
Copyright (c) 1991 Microsoft Corporation
|
||
|
||
Module Name:
|
||
|
||
vrputil.c
|
||
|
||
Abstract:
|
||
|
||
Contains 'private' Vdm Redir (Vrp) 32-bit side utility routines:
|
||
|
||
VrpMapLastError
|
||
VrpMapDosError
|
||
VrpTranslateDosNetPath
|
||
|
||
Author:
|
||
|
||
Richard L Firth (rfirth) 13-Sep-1991
|
||
|
||
Environment:
|
||
|
||
32-bit flat address space
|
||
|
||
Revision History:
|
||
|
||
13-Sep-1991 RFirth
|
||
Created
|
||
|
||
--*/
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h> // toupper
|
||
#include <nt.h>
|
||
#include <ntrtl.h> // ASSERT, DbgPrint
|
||
#include <nturtl.h>
|
||
#include <windows.h>
|
||
#include <softpc.h> // x86 virtual machine definitions
|
||
#include <vrdlctab.h>
|
||
#include <vdmredir.h> // common Vr stuff
|
||
#include <vrinit.h>
|
||
#include "vrputil.h" // prototypes
|
||
#include <lmcons.h>
|
||
#include <lmerr.h>
|
||
|
||
|
||
WORD
|
||
VrpMapLastError(
|
||
VOID
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Gets last error code returned by Win32 function and maps it to corresponding
|
||
Dos error
|
||
|
||
Arguments:
|
||
|
||
None.
|
||
|
||
Return Value:
|
||
|
||
WORD - Dos equivalent error code
|
||
|
||
--*/
|
||
|
||
{
|
||
DWORD LastError;
|
||
|
||
LastError = GetLastError();
|
||
#ifdef VR_DIAGNOSE
|
||
DbgPrint("VrpMapLastError: last error was %d\n", LastError);
|
||
#endif
|
||
return VrpMapDosError(LastError);
|
||
}
|
||
|
||
|
||
WORD
|
||
VrpMapDosError(
|
||
IN DWORD ErrorCode
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Maps (DWORD) errors returned from Win32 routines to (WORD) Dos errors
|
||
|
||
Arguments:
|
||
|
||
ErrorCode - Error code returned from Win32 routine
|
||
|
||
Return Value:
|
||
|
||
WORD - Dos equivalent error code
|
||
|
||
--*/
|
||
|
||
{
|
||
switch (ErrorCode) {
|
||
case NERR_UseNotFound:
|
||
ErrorCode = ERROR_PATH_NOT_FOUND;
|
||
break;
|
||
}
|
||
return (WORD)ErrorCode;
|
||
}
|
||
|
||
|
||
WORD
|
||
VrpTranslateDosNetPath(
|
||
IN OUT LPSTR* InputString,
|
||
OUT LPSTR* OutputString
|
||
)
|
||
|
||
/*++
|
||
|
||
Routine Description:
|
||
|
||
Converts a DOS net string: use UPPER CASE, convert / to \. Called with
|
||
net strings, so validates them too - expects \\computername\share.
|
||
computername is 1 <= name <= 15. sharename is 1 <= name <= 8. There must
|
||
be 2 leading back-slashes
|
||
|
||
BUGBUG: code page? Kanji? DBCS?
|
||
|
||
Arguments:
|
||
|
||
InputString - pointer to pointer to string in DOS memory <= LM20_PATHLEN
|
||
OutputString - pointer to pointer to string in 32-bit memory
|
||
|
||
Return Value:
|
||
|
||
WORD
|
||
Success = 0
|
||
InputString points to one character past the end of the input string
|
||
OutputString points to one character past the end of the output string
|
||
Failure = ERROR_INVALID_PARAMETER
|
||
|
||
--*/
|
||
|
||
{
|
||
char ch;
|
||
char lastCh = 0;
|
||
int state = 0; // 0 = leading slashes; 1 = computer name; 2 = share name
|
||
int slashesToGo = 2;
|
||
int charsToGo = 0;
|
||
int maxLen = LM20_PATHLEN;
|
||
|
||
while (ch = *((*InputString)++)) {
|
||
--maxLen;
|
||
if (maxLen < 0) {
|
||
break;
|
||
}
|
||
if (ch == '/') {
|
||
ch = '\\';
|
||
} else {
|
||
ch = (char)toupper(ch);
|
||
|
||
}
|
||
if (ch == '\\') {
|
||
--slashesToGo;
|
||
if (slashesToGo < 0) {
|
||
break;
|
||
}
|
||
} else {
|
||
if (lastCh == '\\') {
|
||
if (slashesToGo) {
|
||
break;
|
||
} else {
|
||
if (state == 0) {
|
||
state = 1;
|
||
charsToGo = LM20_CNLEN;
|
||
slashesToGo = 1;
|
||
} else if (state == 1) {
|
||
state = 2;
|
||
charsToGo = LM20_NNLEN;
|
||
slashesToGo = 0;
|
||
}
|
||
}
|
||
}
|
||
--charsToGo;
|
||
if (charsToGo < 0) {
|
||
break;
|
||
}
|
||
}
|
||
*((*OutputString)++) = ch;
|
||
lastCh = ch;
|
||
}
|
||
*((*OutputString)++) = 0;
|
||
return ch ? (WORD)ERROR_INVALID_PARAMETER : 0;
|
||
}
|
||
|