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Author SHA1 Message Date
Simon Rozman
b5df8230f0 Set version to 2.1.1 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 10:08:44 +02:00
Simon Rozman
7c31b0bca6 Add Slovenian localization 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 10:08:05 +02:00
Simon Rozman
912814c70a Cleanup VC project file 
Visual Studio keeps separate settings for each Configuration|Platform
pair, exploding the project file and making it error prone to maintain.

Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 10:03:29 +02:00
Simon Rozman
60d4da100e Reformat the source code 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 09:53:58 +02:00
Simon Rozman
908fec06e4 Set version to 2.1 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 09:40:34 +02:00
Simon Rozman
6023e8be89 Put output binaries in solution folder 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 09:40:34 +02:00
Simon Rozman
33ac1031d9 Add documentation and samples 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 09:31:32 +02:00
Simon Rozman
ebdcc0ecab Declare open-source 
Signed-off-by: Simon Rozman <simon@rozman.si>
 2020-07-28 09:21:29 +02:00
Simon Rozman
eb4b3fae4c Add timestamp to warning prompt title 2020-07-28 08:51:22 +02:00
Simon Rozman
967aa86b33 svn:ignore => .gitignore 2020-07-28 08:47:54 +02:00
8 changed files with 113 additions and 200 deletions

13
.gitignore vendored Normal file
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@ -0,0 +1,13 @@
# /
/ARM64
/Win32
/x64
# /LockIfOutOfLogonHours/
/LockIfOutOfLogonHours/*.user
/LockIfOutOfLogonHours/Debug.ARM64
/LockIfOutOfLogonHours/Debug.Win32
/LockIfOutOfLogonHours/Debug.x64
/LockIfOutOfLogonHours/Release.ARM64
/LockIfOutOfLogonHours/Release.Win32
/LockIfOutOfLogonHours/Release.x64

19
COPYING Normal file
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@ -0,0 +1,19 @@
Copyright © 2015-2020 Simon Rozman (simon@rozman.si)
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

52
LockIfOutOfLogonHours/LockIfOutOfLogonHours.cpp
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@ -1,10 +1,5 @@
//////////////////////////////////////////////////////////////////////////////
//
// LockIfOutOfLogonHours - Locks current session if user is out of logon hours
//
// Copyright © 2015 Simon Rozman (simon@rozman.si)
//
//////////////////////////////////////////////////////////////////////////////
// SPDX-License-Identifier: MIT
// Copyright © 2015-2020 Simon Rozman (simon@rozman.si)
#define SECURITY_WIN32
@ -13,10 +8,10 @@
#include <Security.h>
#include <tchar.h>
static void GetLogonHoursIndices(_In_ const SYSTEMTIME *time, _In_ const TIME_ZONE_INFORMATION *tzi, _Out_ LONG *plIndexSA, _Out_ LONG *plIndexBit)
static void GetLogonHoursIndices(_In_ const SYSTEMTIME* time, _In_ const TIME_ZONE_INFORMATION* tzi, _Out_ LONG* plIndexSA, _Out_ LONG* plIndexBit)
{
LONG wIndex = (((LONG)time->wDayOfWeek * 24 + time->wHour) * 60 + time->wMinute + tzi->Bias) / 60 % (21*8);
*plIndexSA = wIndex / 8,
LONG wIndex = (((LONG)time->wDayOfWeek * 24 + time->wHour) * 60 + time->wMinute + tzi->Bias) / 60 % (21 * 8);
*plIndexSA = wIndex / 8;
*plIndexBit = wIndex % 8;
}
@ -35,7 +30,8 @@ static LPTSTR FormatMsg(_In_z_ LPCTSTR lpFormat, ...)
&arg)) {
va_end(arg);
return lpBuffer;
} else {
}
else {
va_end(arg);
return NULL;
}
@ -54,7 +50,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
UINT uiResult;
HANDLE hHeap = GetProcessHeap();
LPTSTR pszADsPath;
IDispatch *pUserObj;
IDispatch* pUserObj;
DISPID dispidUserObjectMembers[_countof(ppszUserObjectMembers)];
VARIANT varLogonHours = { VT_EMPTY };
@ -65,7 +61,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
// Get user fully qualified DN.
for (ULONG nLength = 1024; ;) {
if ((pszADsPath = (LPTSTR)HeapAlloc(hHeap, 0, (nLength + _countof(pszURIPrefix) - 1)*sizeof(TCHAR))) == NULL) {
if ((pszADsPath = (LPTSTR)HeapAlloc(hHeap, 0, (nLength + _countof(pszURIPrefix) - 1) * sizeof(TCHAR))) == NULL) {
uiResult = 3; // Out of memory
goto _cleanup2;
}
@ -81,7 +77,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
}
// Add LDAP URI prefix.
CopyMemory(pszADsPath, pszURIPrefix, (_countof(pszURIPrefix) - 1)*sizeof(TCHAR));
CopyMemory(pszADsPath, pszURIPrefix, (_countof(pszURIPrefix) - 1) * sizeof(TCHAR));
if (FAILED(CoGetObject(pszADsPath, NULL, IID_IDispatch, (void**)&pUserObj))) {
uiResult = 5; // Get user object failed
@ -101,7 +97,8 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
if (V_VT(&varLogonHours) == VT_EMPTY) {
uiResult = 0; // User has no logon hours defined
goto _cleanup5;
} else if (V_VT(&varLogonHours) != (VT_ARRAY | VT_UI1)) {
}
else if (V_VT(&varLogonHours) != (VT_ARRAY | VT_UI1)) {
uiResult = 7; // Invalid logon hours
goto _cleanup5;
}
@ -122,24 +119,34 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
}
if (bData & (1 << lIndexBit)) {
uiResult = 0; // Within logon hours
} else {
}
else {
uiResult = 1; // Out of logon hours
LockWorkStation();
}
time.wMinute += 10;
GetLogonHoursIndices(&time, &time_zone, &lIndexSA, &lIndexBit);
SYSTEMTIME timeFuture = time;
timeFuture.wMinute += 10;
GetLogonHoursIndices(&timeFuture, &time_zone, &lIndexSA, &lIndexBit);
if (FAILED(SafeArrayGetElement(V_ARRAY(&varLogonHours), &lIndexSA, &bData))) {
uiResult = 8; // Logon hour index not found
goto _cleanup5;
}
if (uiResult == 0 && !(bData & (1 << lIndexBit))) {
// Within logon hours now, but out of logon hours in 10 min.
// Within logon hours now, but out of logon hours in up to 10 minutes.
HINSTANCE hShell32Res = LoadLibraryEx(_T("shell32.dll"), NULL, LOAD_LIBRARY_AS_IMAGE_RESOURCE);
LPTSTR lpTitle, lpMsgFmt, lpMsg;
LoadString(hInstance, IDS_WARNING_TITLE, (LPTSTR)&lpTitle, 0);
LPTSTR lpTitleFmt;
LoadString(hInstance, IDS_WARNING_TITLE_FMT, (LPTSTR)&lpTitleFmt, 0);
TCHAR szDate[0x100];
GetDateFormat(LOCALE_USER_DEFAULT, DATE_LONGDATE, &time, NULL, szDate, _countof(szDate));
szDate[_countof(szDate) - 1] = 0;
TCHAR szTime[0x100];
GetTimeFormat(LOCALE_USER_DEFAULT, 0, &time, NULL, szTime, _countof(szTime));
szTime[_countof(szTime) - 1] = 0;
LPTSTR lpTitle = FormatMsg(lpTitleFmt, szDate, szTime);
LPTSTR lpMsgFmt;
LoadString(hInstance, IDS_WARNING_MSG_FMT, (LPTSTR)&lpMsgFmt, 0);
lpMsg = FormatMsg(lpMsgFmt, 70 - time.wMinute);
LPTSTR lpMsg = FormatMsg(lpMsgFmt, 60 - time.wMinute);
MSGBOXPARAMS params = {
sizeof(MSGBOXPARAMS), // cbSize
NULL, // hwndOwner
@ -151,6 +158,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine
};
MessageBoxIndirect(&params);
LocalFree(lpMsg);
LocalFree(lpTitle);
FreeLibrary(hShell32Res);
}

13
LockIfOutOfLogonHours/LockIfOutOfLogonHours.h
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@ -1,15 +1,10 @@
//////////////////////////////////////////////////////////////////////////////
//
// LockIfOutOfLogonHours - Locks current session if user is out of logon hours
//
// Copyright © 2015 Simon Rozman (simon@rozman.si)
//
//////////////////////////////////////////////////////////////////////////////
// SPDX-License-Identifier: MIT
// Copyright © 2015-2020 Simon Rozman (simon@rozman.si)
#ifndef __LOCK_IF_OUT_OF_LOGON_HOURS_H__
#define __LOCK_IF_OUT_OF_LOGON_HOURS_H__
#define IDS_WARNING_TITLE 0
#define IDS_WARNING_MSG_FMT 1
#define IDS_WARNING_TITLE_FMT 0
#define IDS_WARNING_MSG_FMT 1
#endif

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LockIfOutOfLogonHours/LockIfOutOfLogonHours.rc
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193
LockIfOutOfLogonHours/LockIfOutOfLogonHours.vcxproj
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@ -35,213 +35,68 @@
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23
README.md Normal file
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@ -0,0 +1,23 @@
# LockIfOutOfLogonHours - Lock Windows User Desktop When Logon Hours Denied
LockIfOutOfLogonHours is a small utility to test if the invoking user is within permitted logon hours or not.
If not, the utility locks the user desktop, locking the user out but not killing users' work.
If logon hours are to expire within 10 minutes, a prompt is displayed encouraging the user to finish her/his work in time.
## Running
Use Task Scheduler to schedule the `LockIfOutOfLogonHours.exe` to run periodically as the interactive user.
Active Directory allows configuring logon hours rounded to the whole hours only. Therefore, it makes sense to trigger the `LockIfOutOfLogonHours.exe` to run:
- Sometime before the hour is out (up to 10 minutes before the hour is out, e.g. 0:55, 1:55, ..., 23:55). This trigger notifies the user.
- At or just after the hour is out (e.g. 0:01, 1:01, ..., 23:01). This trigger locks the user out.
A sample task XML to be imported in Task Scheduler can be found in [`samples\LockIfOutOfLogonHours.xml`](samples/LockIfOutOfLogonHours.xml).
## Building
Microsoft Visual Studio 2019 is required.

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