Zaki
506aee7e6f
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.
95 lines
2.0 KiB
ObjectPascal
95 lines
2.0 KiB
ObjectPascal
unit PM.RateLimit;
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{
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Mirrors api.php checkRateLimit / recordAttempt / clearAttempts.
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15-minute window. Caller decides the threshold (5 for register, 10 for login).
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}
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interface
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uses
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System.SysUtils, FireDAC.Comp.Client, FireDAC.Stan.Param, IdCustomHTTPServer,
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PM.Database;
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function GetClientIP(ARequest: TIdHTTPRequestInfo): string;
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function CheckRateLimit(const AIP: string): Integer;
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procedure RecordAttempt(const AIP: string);
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procedure ClearAttempts(const AIP: string);
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implementation
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function GetClientIP(ARequest: TIdHTTPRequestInfo): string;
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begin
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// api.php trusts X-Forwarded-For (security flaw H1 in audit). Since this
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// server is loopback-only and not behind a proxy, prefer the actual peer IP.
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Result := ARequest.RemoteIP;
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if Result = '' then Result := 'unknown';
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end;
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function CheckRateLimit(const AIP: string): Integer;
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var
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LQ: TFDQuery;
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begin
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Result := 0;
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DB.Lock;
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try
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LQ := TFDQuery.Create(nil);
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try
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LQ.Connection := DB.Connection;
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LQ.SQL.Text :=
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'SELECT COUNT(*) AS cnt FROM login_attempts ' +
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'WHERE ip = :ip ' +
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'AND attempted_at > datetime(''now'', ''-15 minutes'')';
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LQ.ParamByName('ip').AsString := AIP;
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LQ.Open;
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Result := LQ.FieldByName('cnt').AsInteger;
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finally
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LQ.Free;
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end;
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finally
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DB.Unlock;
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end;
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end;
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procedure RecordAttempt(const AIP: string);
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var
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LQ: TFDQuery;
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begin
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DB.Lock;
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try
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LQ := TFDQuery.Create(nil);
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try
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LQ.Connection := DB.Connection;
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LQ.SQL.Text := 'INSERT INTO login_attempts (ip) VALUES (:ip)';
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LQ.ParamByName('ip').AsString := AIP;
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LQ.ExecSQL;
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finally
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LQ.Free;
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end;
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finally
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DB.Unlock;
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end;
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end;
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procedure ClearAttempts(const AIP: string);
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var
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LQ: TFDQuery;
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begin
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DB.Lock;
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try
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LQ := TFDQuery.Create(nil);
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try
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LQ.Connection := DB.Connection;
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LQ.SQL.Text := 'DELETE FROM login_attempts WHERE ip = :ip';
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LQ.ParamByName('ip').AsString := AIP;
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LQ.ExecSQL;
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finally
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LQ.Free;
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end;
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finally
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DB.Unlock;
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end;
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end;
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end.
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