Sleep/hibernate handling
========================
Adds WM_POWERBROADCAST / PBT_APMSUSPEND handling alongside the existing
WTS_SESSION_LOCK detection. Closing a laptop lid often suspends the
system without firing a session lock, leaving the decrypted vault in
memory until resume — this fixes that.
Implementation note: WM_POWERBROADCAST is normally only delivered to
top-level windows, and Windows can silently skip hidden utility windows.
PowerRegisterSuspendResumeNotification (user32, Win 8+) forces delivery
to our specific HWND regardless. Loaded dynamically via GetProcAddress
so older Windows degrades gracefully (WTS lock still works).
The suspend handler reuses OnSystemLock — semantically the same event
from the user's perspective ("I'm leaving the machine"). Calls
lockVault() in JS via ExecuteJavaScript.
RateLimit fix (related: lockout feature from previous commit)
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The UPSERT (INSERT ... ON CONFLICT DO UPDATE) in RecordFailedAccountAttempt
errored with "near ON: syntax error" — either the bundled SQLite version
or FireDAC's parameter preprocessor doesn't handle UPSERT correctly.
Replaced with portable UPDATE-then-INSERT (safe under our DB.Lock).
Also:
- datetime modifier ("+60 seconds") built in Delphi via Format() rather
than SQL-side concatenation ('+' || :sec || ' seconds'), which FireDAC
was mangling on some configs.
- GetAccountLockoutRemaining rewritten with julianday() (the SQLite
idiom for date arithmetic) instead of strftime('%s'). Cleaner, NULL-safe.
Introduces the Delphi 12 FMX backend (PMServer) that hosts the embedded
WebView2 vault on 127.0.0.1, and a native bridge between JS and Delphi
that wires three privacy-focused features:
1. Secure clipboard
Copying a password registers the Win32 "ExcludeClipboardContentFromMonitorProcessing"
format alongside CF_UNICODETEXT, so Win+V clipboard history never sees
the value. Auto-clears after 30s via TTimer. Bridge.copySecure() in
app.js routes all password/username/secret copy paths through the
native layer when running inside the Delphi WebView2 (falls back to
navigator.clipboard for the PHP standalone).
2. Tray icon (X-to-tray when server running)
Closing the dev panel hides both the form HWND and the TFMAppClass
per-process proxy window that owns the FMX taskbar entry — the form's
HWND alone is not the taskbar-visible one in FMX (took some iteration
to discover). Tray menu: Open, Lock vault, Quit. Clipboard is force-
cleared on minimize as extra safety. First-time minimize fires a
balloon notification so the user knows the app is still running.
3. Auto-lock on Windows session lock (Win+L)
wtsapi32.dll!WTSRegisterSessionNotification on a dedicated message-only
window. On WM_WTSSESSION_CHANGE / WTS_SESSION_LOCK, the bridge calls
ExecuteJavaScript('lockVault()'). Same path used by the tray "Lock vault"
menu item.
Bridge architecture:
- JS → Delphi via cmd:// URLs intercepted in OnBeforeNavigate
(pattern lifted from DeskInsight Monaco). Currently exposes
cmd://clipboard/copy?text=...&clear=... and cmd://clipboard/clear.
- Delphi → JS via TTMSFNCWebBrowser.ExecuteJavaScript with guarded
calls (typeof check) so the bridge degrades cleanly if app.js isn't
loaded yet.
Files:
- Source/PM.Bridge.pas (new) — TSecureClipboard + TPMBridge
- UMainForm.pas/.fmx — bridge wiring, FormCloseQuery intercept, tray
callbacks (BridgeTrayRestore / BridgeLockRequest / BridgeQuit)
- js/app.js — Bridge object, 5 navigator.clipboard sites migrated to
Bridge.copySecure with PHP-compatible fallback, Bridge.onTrayRestore
handler that resets the auto-lock timer
.gitignore extended with Delphi build artifacts (*.dcu, Win32/, Win64/,
__history/, __recovery/, *.identcache, *.dsk, *.local, etc.) so source
checkouts stay clean.
Zaki