GlitchTip: Fehlerprotokoll fuer Server, Fehlersignale und Browser

- sentry/sentry-laravel 4.28; config/sentry.php gehaertet (keine PII,
  keine Request-Bodys, before_send ErrorReportScrubber)
- Handler: Integration::captureUnhandledException, CommandNotFoundException
  nicht melden
- ReportErrorSignals (global): toter interner Link (nach Pfad wegen
  Catch-all-Route), 403/429 fuer Angemeldete, 419; gedrosselt
- Browser: selbst gehostetes SDK (esbuild-Bundle 11.5.0), Loader ohne
  Build-Schritt und ohne Regex-Lookbehind, in 7 Layouts mit area-Tag
- phpunit.xml: DSNs und ntfy-URL leer, CACHE_DRIVER=array (Tests schrieben
  bisher in den lokalen Datei-Cache)
- dev/glitch-tip/README.md mit Instanz, Org, Projekt-IDs, API-Auswertung

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Support/Monitoring/ErrorReportScrubber.php

@@ -0,0 +1,159 @@
+<?php
+
+namespace App\Support\Monitoring;
+
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Str;
+use Sentry\Event;
+use Sentry\EventHint;
+use Sentry\UserDataBag;
+use Throwable;
+
+/**
+ * Letzte Station vor GlitchTip (`before_send` in config/sentry.php).
+ *
+ * Personenbezug nur über die interne User-ID. Tokens und Signaturen stecken
+ * in Query-Strings (signierte Links) und in Pfaden
+ * (`/reset-password/{token}`, Magic Links) — beides wird ersetzt, bevor das
+ * Ereignis den Server verlässt. E-Mail-Adressen in Fehlermeldungen (z. B.
+ * QueryException mit eingesetzten Bindings) ebenso.
+ */
+class ErrorReportScrubber
+{
+    public const Filtered = '[Filtered]';
+
+    /**
+     * Query-Parameter, die unverändert mitgehen dürfen (`utm_*` immer).
+     * Dieselbe Liste steht in public/js/error-reporting/error-reporting.js.
+     *
+     * @var list<string>
+     */
+    public const AllowedQueryParameters = ['page', 'q', 'tab', 'sort', 'lang', 'month', 'year'];
+
+    private const EmailPattern = '/[A-Z0-9._%+\-]+@[A-Z0-9.\-]+\.[A-Z]{2,}/i';
+
+    /** Pfadsegmente, die wie ein Token aussehen (Magic Links, Reset-Links). */
+    private const TokenSegmentPattern = '#(?<=/)[A-Za-z0-9_\-]{32,}(?=/|$)#';
+
+    public static function beforeSend(Event $event, ?EventHint $hint = null): ?Event
+    {
+        $userId = self::authenticatedUserId();
+
+        $event->setUser($userId !== null ? UserDataBag::createFromUserIdentifier($userId) : null);
+        $event->setRequest(self::scrubRequest($event->getRequest()));
+
+        foreach ($event->getExceptions() as $exception) {
+            $exception->setValue(self::scrubText($exception->getValue()));
+        }
+
+        if ($event->getMessage() !== null) {
+            $formatted = $event->getMessageFormatted();
+
+            $event->setMessage(
+                self::scrubText($event->getMessage()),
+                $event->getMessageParams(),
+                $formatted !== null ? self::scrubText($formatted) : null,
+            );
+        }
+
+        return $event;
+    }
+
+    /**
+     * @param  array<string, mixed>  $request
+     * @return array<string, mixed>
+     */
+    public static function scrubRequest(array $request): array
+    {
+        if (isset($request['url']) && is_string($request['url'])) {
+            $request['url'] = self::scrubUrl($request['url']);
+        }
+
+        if (isset($request['query_string']) && is_string($request['query_string'])) {
+            $request['query_string'] = self::scrubQuery($request['query_string']);
+        }
+
+        unset($request['data'], $request['cookies']);
+
+        foreach ($request['headers'] ?? [] as $name => $values) {
+            if (strtolower((string) $name) === 'referer') {
+                $request['headers'][$name] = array_map(
+                    static fn (mixed $value): string => self::scrubUrl((string) $value),
+                    (array) $values,
+                );
+            }
+        }
+
+        return $request;
+    }
+
+    public static function scrubUrl(string $url): string
+    {
+        $query = parse_url($url, PHP_URL_QUERY);
+        $withoutQuery = $query !== null && $query !== false ? Str::before($url, '?') : $url;
+        $scrubbedPath = self::scrubPath(self::scrubPathTokens($withoutQuery));
+
+        return $query !== null && $query !== false && $query !== ''
+            ? $scrubbedPath.'?'.self::scrubQuery($query)
+            : $scrubbedPath;
+    }
+
+    public static function scrubQuery(string $query): string
+    {
+        parse_str($query, $parameters);
+
+        $scrubbed = [];
+        foreach ($parameters as $name => $value) {
+            $isAllowed = in_array((string) $name, self::AllowedQueryParameters, true)
+                || str_starts_with((string) $name, 'utm_');
+
+            $scrubbed[$name] = $isAllowed && is_string($value) ? $value : self::Filtered;
+        }
+
+        return http_build_query($scrubbed, '', '&', PHP_QUERY_RFC3986);
+    }
+
+    public static function scrubPath(string $path): string
+    {
+        return self::scrubText((string) preg_replace(self::TokenSegmentPattern, self::Filtered, $path));
+    }
+
+    public static function scrubText(string $text): string
+    {
+        return (string) preg_replace(self::EmailPattern, '[email]', $text);
+    }
+
+    /**
+     * Ersetzt Routenparameter, deren Name auf ein Geheimnis hindeutet
+     * (`token`, `hash`, `signature`), im Pfad der aktuellen Route.
+     */
+    private static function scrubPathTokens(string $url): string
+    {
+        try {
+            $route = request()->route();
+        } catch (Throwable) {
+            return $url;
+        }
+
+        if ($route === null) {
+            return $url;
+        }
+
+        foreach ($route->parameters() as $name => $value) {
+            if (is_string($value) && $value !== '' && Str::contains(strtolower((string) $name), ['token', 'hash', 'signature'])) {
+                $url = str_replace(rawurlencode($value), self::Filtered, str_replace($value, self::Filtered, $url));
+            }
+        }
+
+        return $url;
+    }
+
+    private static function authenticatedUserId(): int|string|null
+    {
+        try {
+            return Auth::id();
+        } catch (Throwable) {
+            return null;
+        }
+    }
+}

app/Support/Monitoring/ErrorSignal.php

@@ -0,0 +1,68 @@
+<?php
+
+namespace App\Support\Monitoring;
+
+use Illuminate\Support\Facades\RateLimiter;
+use Illuminate\Support\Str;
+use Sentry\Severity;
+use Sentry\State\Scope;
+
+use function Sentry\captureMessage;
+use function Sentry\withScope;
+
+/**
+ * Fehler ohne Exception als GlitchTip-Warnung: tote
+ * interne Links, verweigerte Zugriffe, abgelaufene Seiten. Gruppiert wird je
+ * Signal und Ort; je Gruppe gehen höchstens fünf Meldungen in zehn Minuten
+ * raus, damit ein Crawler mit gefälschtem Referrer GlitchTip nicht flutet.
+ */
+class ErrorSignal
+{
+    public const DeadInternalLink = 'dead_internal_link';
+
+    public const AccessDenied = 'access_denied';
+
+    public const PageExpired = 'page_expired';
+
+    public const Throttled = 'throttled';
+
+    private const Labels = [
+        self::DeadInternalLink => 'Toter interner Link',
+        self::AccessDenied => 'Zugriff verweigert (angemeldet)',
+        self::PageExpired => 'Seite abgelaufen (419)',
+        self::Throttled => 'Drosselung trifft angemeldeten Nutzer',
+    ];
+
+    private const MaxReportsPerWindow = 5;
+
+    private const WindowSeconds = 600;
+
+    /**
+     * @param  array<string, mixed>  $context
+     */
+    public function report(string $signal, string $location, array $context = []): bool
+    {
+        $location = Str::limit($location, 200, '');
+
+        $reported = RateLimiter::attempt(
+            'error-signal:'.sha1($signal.'|'.$location),
+            self::MaxReportsPerWindow,
+            static fn (): bool => true,
+            self::WindowSeconds,
+        );
+
+        if ($reported === false) {
+            return false;
+        }
+
+        withScope(function (Scope $scope) use ($signal, $location, $context): void {
+            $scope->setFingerprint(['error-signal', $signal, $location]);
+            $scope->setTag('signal', $signal);
+            $scope->setContext('signal', $context);
+
+            captureMessage((self::Labels[$signal] ?? $signal).': '.$location, Severity::warning());
+        });
+
+        return true;
+    }
+}