windows-nt/Source/XPSP1/NT/ds/security/base/lsa/server/lsastr.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1999 Microsoft Corporation
Module Name:
lsastr.c
Abstract:
Common string operations.
Author:
24-March-1999 kumarp
--*/
#include <lsapch2.h>
VOID
LsapTruncateUnicodeString(
IN OUT PUNICODE_STRING String,
IN USHORT TruncateToNumChars)
/*++
Routine Description:
If a string is longer than TruncateToNumChars then truncate it
to TruncateToNumChars.
Arguments:
String - pointer to string
TruncateToNumChars - number of chars to truncate to
Return Value:
None
Notes:
No memory (de)allocations are involved.
--*/
{
USHORT TruncateToLength = TruncateToNumChars*sizeof(WCHAR);
if (String->Length > TruncateToLength) {
String->Length = TruncateToLength;
String->Buffer[TruncateToNumChars] = UNICODE_NULL;
}
}
BOOLEAN
LsapRemoveTrailingDot(
IN OUT PUNICODE_STRING String,
IN BOOLEAN AdjustLengthOnly)
/*++
Routine Description:
If there is a '.' at the end of a string, remove it.
Arguments:
String - pointer to unicode string
AdjustLengthOnly - If TRUE only decrements the Length member of
String otherwise replaces dot with UNICODE_NULL as well.
Return Value:
TRUE if trailing dot was present, FALSE otherwise.
Notes:
--*/
{
USHORT NumCharsInString;
NumCharsInString = String->Length / sizeof(WCHAR);
if (NumCharsInString &&
(String->Buffer[NumCharsInString-1] == L'.')) {
String->Length -= sizeof(WCHAR);
if (!AdjustLengthOnly) {
String->Buffer[NumCharsInString-1] = UNICODE_NULL;
}
return TRUE;
}
return FALSE;
}