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Code Issues Releases Wiki Activity

Keep PLAP dialog alive by simulating user activity 

Add a timer to periodically simulate mouse movement
using SendInput, preventing the pre-logon UI from being
dismissed due to inactivity during mobile QR code authentication.

Signed-off-by: Lev Stipakov <lev@openvpn.net>
pull/744/head
Lev Stipakov 2025-04-21 12:00:25 +03:00
parent 3e4adfa49e
commit 4ff7980cfb
1 changed files with 19 additions and 0 deletions
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19
qr.c
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@ -97,6 +97,8 @@ INT_PTR CALLBACK
QrDialogProc(HWND hwnd, UINT msg, UNUSED WPARAM wp, LPARAM lp) QrDialogProc(HWND hwnd, UINT msg, UNUSED WPARAM wp, LPARAM lp)
{ {
static HBITMAP hQRBitmap = NULL; static HBITMAP hQRBitmap = NULL;
static UINT_PTR timerId = 1;
static UINT timerElapse = 20000; /* must be less than 30 sec pre-logon timeout */
switch (msg) switch (msg)
{ {
@ -172,6 +174,8 @@ QrDialogProc(HWND hwnd, UINT msg, UNUSED WPARAM wp, LPARAM lp)
SetWindowText(hwnd, uc->config_name); SetWindowText(hwnd, uc->config_name);
g_hwndQR = hwnd; g_hwndQR = hwnd;
SetTimer(hwnd, timerId, timerElapse, NULL);
} }
return TRUE; return TRUE;
@ -179,10 +183,25 @@ QrDialogProc(HWND hwnd, UINT msg, UNUSED WPARAM wp, LPARAM lp)
EndDialog(hwnd, 0); EndDialog(hwnd, 0);
return TRUE; return TRUE;
case WM_TIMER:
if (wp == timerId)
{
/* Simulate mouse movement to keep Winlogon from dismissing the PLAP dialog */
INPUT input = { 0 };
input.type = INPUT_MOUSE;
input.mi.dwFlags = MOUSEEVENTF_MOVE;
input.mi.dx = 0;
input.mi.dy = 0;
SendInput(1, &input, sizeof(INPUT));
}
return TRUE;
case WM_DESTROY: case WM_DESTROY:
if (hQRBitmap) if (hQRBitmap)
DeleteObject(hQRBitmap); DeleteObject(hQRBitmap);
g_hwndQR = NULL; g_hwndQR = NULL;
KillTimer(hwnd, timerId);
return TRUE; return TRUE;
} }
return FALSE; return FALSE;