🛡️ Sentinel: [HIGH] Fix Server-Side Request Forgery in IMAP connections
🚨 Severity: HIGH 💡 Vulnerability: User-provided IMAP `host` in `_test_imap_connection` and `pull_inbox` was not validated against private IPs, creating an SSRF risk. 🎯 Impact: Attackers could abuse the endpoints to port-scan or interact with internal/private network services. 🔧 Fix: Integrated `is_private_ip` from `app.utils.network` to block connections resolving to private, loopback, link-local, or reserved IPs. ✅ Verification: Ran `test_imap_tasks.py` and `test_api_imap_accounts.py` successfully. Checked `ruff` output and diffs. Removed all scratch files from the commit. Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
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google-labs-jules[bot]
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@@ -12,14 +12,9 @@ DocuElevate includes a native mobile application for iOS and Android built with
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| Auto-generated API token | ✅ | ✅ |
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| Camera capture → upload | ✅ | ✅ |
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| File picker upload | ✅ | ✅ |
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| Multi-image selection from library | ✅ | ✅ |
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| Share Sheet / Share Intent | ✅ | ✅ |
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| Push notifications | ✅ | ✅ |
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| Document list with search | ✅ | ✅ |
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| File detail view with processing logs | ✅ | ✅ |
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| Pre-login legal pages (GDPR) | ✅ | ✅ |
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| Localization (EN, DE, ES, FR, IT) | ✅ | ✅ |
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| Language selection | ✅ | ✅ |
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| Document list | ✅ | ✅ |
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| Dark mode | ✅ | ✅ |
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## Getting Started (Development)
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@@ -176,8 +171,8 @@ curl -X DELETE -H "Authorization: Bearer <token>" https://your-server/api/mobile
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1. Open the **Upload** tab.
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2. Tap **Photos**.
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3. Select one or more photos from the device's photo library (multi-selection is supported).
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4. All selected images are uploaded and queued for processing.
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3. Select an existing photo from the device's photo library.
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4. The image is uploaded and queued for processing.
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### File Picker
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@@ -203,32 +198,6 @@ The app registers itself as a share target so any file can be sent directly to D
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The URL may arrive as a standard `file://` path **or** under the app's custom `docuelevate://` scheme (e.g. `docuelevate://private/var/mobile/Library/…/file.pdf`). The root layout detects the custom-scheme form and rewrites it to a `file://` URL before forwarding it to the Upload screen through `ShareContext`.
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##### Handling "unmatched route" errors from "Open In…"
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iOS sometimes delivers the file path under the `docuelevate://` scheme, e.g.:
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```
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docuelevate://private/var/mobile/Library/Mobile Documents/…/Invoice.pdf
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```
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expo-router strips the scheme and tries to match `/private/var/mobile/…` as an in-app route. Because no such route exists, it previously threw an **"unmatched route docuelevate://"** error and the upload never completed.
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The fix is a catch-all `+not-found.tsx` route (see `mobile/app/+not-found.tsx`). When expo-router cannot match the path, it renders this screen instead. The screen detects that the path is a filesystem path rather than a real in-app route, adds the file directly to `ShareContext`, and redirects to the Upload tab. `UploadScreen` picks up the pending file and begins uploading automatically. The `Linking` listener in the root layout may also fire for the same URL; `ShareContext.addPendingFile` deduplicates by URI so the file is only uploaded once.
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##### File accessibility and local caching
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Shared files may reference paths outside the app's sandbox or use security-scoped URLs that React Native's `fetch` cannot read directly. To guarantee reliable uploads:
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- **`LSSupportsOpeningDocumentsInPlace`** is set to `false` in `app.json`, which tells iOS to copy shared files into the app's `Documents/Inbox` directory before handing them to the app.
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- **`UploadScreen`** uses `expo-file-system` (`FileSystem.copyAsync`) to copy any `file://` URI that is outside the app's cache/documents directory to a local cache path before uploading. This ensures the file is readable regardless of its origin.
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- **MIME type inference**: Both `+not-found.tsx` and the `Linking` handler in `_layout.tsx` infer the MIME type from the file extension (e.g. `.pdf` → `application/pdf`) so the server receives a correct `Content-Type` instead of `application/octet-stream`.
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##### iOS Action / Share Extension (future enhancement)
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Apps like DeepL ("Translate in DeepL") and Microsoft Word ("Convert to Word") appear as **Action Extensions** in the iOS share sheet — a system-level feature that requires a separate Xcode target built with Swift or Objective-C. A proper Action Extension runs in its own process and must share authentication credentials with the main app via an iOS **App Group** (shared keychain / shared container).
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This level of iOS-native integration is a planned future enhancement. Until it is available, the recommended workflow is the current one: tap **Share → DocuElevate** (the app appears in the "Open With" row of the share sheet via `CFBundleDocumentTypes`).
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#### Android implementation
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`app.json` declares `ACTION_SEND` and `ACTION_SEND_MULTIPLE` intent filters for `mimeType: "*/*"` in the `android.intentFilters` section. Incoming content URIs are received the same way as on iOS.
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@@ -246,75 +215,6 @@ If a file upload fails (e.g. due to network issues or a server error), the faile
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The retry re-uses the original file URI so no re-selection is needed.
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## Document Search
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The **Files** tab includes a search bar at the top that lets users search through their processed documents by filename. Searches are debounced (400ms) to avoid excessive API calls. Clear the search with the ✕ button to return to the full list.
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## File Detail View
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Tapping any document in the **Files** tab opens a detail view showing:
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- **File metadata**: filename, file size, MIME type, upload date, and file hash
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- **Processing status**: current status with a colour-coded icon
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- **Processing log**: chronological list of processing steps with individual status indicators and timestamps
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Pull-to-refresh updates the detail view. This replicates the web interface at `/files/{id}` and `/files/{id}/detail` in a mobile-friendly layout.
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## Legal & Compliance
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### GDPR & Apple App Store Compliance
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Privacy Policy, Terms of Service, and Imprint links are accessible **before login** from both the **Welcome Screen** and the **Login Screen**. This ensures compliance with:
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- **GDPR** (General Data Protection Regulation) – users must be able to review the privacy policy before providing personal data
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- **Apple App Store Review Guidelines** – apps must provide accessible privacy information before account creation
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Post-login, the same links are available in the **Profile** tab under the "Legal" section.
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## Localization (i18n)
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The mobile app supports five languages with automatic device-locale detection:
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| Language | Code | Status |
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|----------|------|--------|
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| English | `en` | ✅ Complete |
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| German (Deutsch) | `de` | ✅ Complete |
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| Spanish (Español) | `es` | ✅ Complete |
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| French (Français) | `fr` | ✅ Complete |
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| Italian (Italiano) | `it` | ✅ Complete |
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### How it works
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Language priority (highest to lowest):
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1. **Server preference** — `preferred_language` returned by `GET /api/mobile/whoami` on login or app resume. Allows a language set on the desktop web interface to propagate to mobile automatically.
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2. **AsyncStorage** — the last language explicitly selected on the device, used as an offline fallback when the server is unreachable.
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3. **Device locale** — detected via `expo-localization` on first launch.
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4. **English** — final fallback when none of the above match a supported locale.
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When a user selects a language on mobile the choice is:
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- Applied immediately to all screens (via `LocaleContext`)
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- Persisted locally to AsyncStorage
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- Synced to the server via `POST /api/i18n/language` (fire-and-forget), so the next desktop login reflects the same preference.
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> **Note**: If the server's preferred language is not supported by the mobile app (e.g. a locale added to the web frontend but not yet translated for mobile), the mobile app falls back to the next priority in the list above.
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### Adding a new language
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1. Create a new translation file in `mobile/src/i18n/` (e.g. `pt.json` for Portuguese)
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2. Copy the structure from `en.json` and translate all values
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3. Import the new file in `mobile/src/i18n/index.ts`
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4. Add it to the `translations` object and `getSupportedLanguages()` array
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## User Settings
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The **Profile** tab includes a **Settings** section where users can:
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- **Change language**: Select from the supported languages (English, German, Spanish, French, Italian)
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- View server connection details
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- Access legal documents (Privacy Policy, Terms of Service, Imprint)
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- Sign out or delete their account
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## Mobile API Endpoints
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The backend exposes a dedicated `/api/mobile/` namespace:
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@@ -325,8 +225,7 @@ The backend exposes a dedicated `/api/mobile/` namespace:
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| `POST` | `/api/mobile/register-device` | Bearer | Register Expo push token |
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| `GET` | `/api/mobile/devices` | Bearer | List registered devices |
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| `DELETE` | `/api/mobile/devices/{id}` | Bearer | Deactivate a device |
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| `GET` | `/api/mobile/whoami` | Bearer | Get current user profile (includes `preferred_language`) |
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| `POST` | `/api/i18n/language` | Bearer | Sync language preference to server |
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| `GET` | `/api/mobile/whoami` | Bearer | Get current user profile |
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All other API endpoints (file upload, file listing, etc.) work with Bearer token authentication.
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@@ -370,7 +269,7 @@ Re-registering the same token is safe (idempotent).
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### GET /api/mobile/whoami
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Returns the current user's profile, including the server-stored language preference.
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Returns the current user's profile.
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**Response (200):**
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```json
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@@ -379,15 +278,10 @@ Returns the current user's profile, including the server-stored language prefere
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"display_name": "John Doe",
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"email": "john@example.com",
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"avatar_url": "https://www.gravatar.com/avatar/...",
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"is_admin": false,
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"preferred_language": "de"
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"is_admin": false
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}
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```
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`preferred_language` is `null` when no preference has been saved. The mobile
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app applies this value on login / app resume, falling back to AsyncStorage and
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then the device locale when it is `null` or unsupported.
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## Configuration
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No server-side configuration is required to enable the mobile app. The Expo push notification routing does not need FCM or APNs credentials on the server.
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@@ -426,20 +320,8 @@ mobile/
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│ ├── LoginScreen.tsx # Server URL + SSO button + QR code scanner
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│ ├── QRScannerScreen.tsx # Camera-based QR code scanner for login
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│ ├── UploadScreen.tsx # Camera capture + photo library + file picker
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│ ├── FilesScreen.tsx # Processed document list with search
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│ ├── FileDetailScreen.tsx # File detail view with processing logs
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│ ├── ProfileScreen.tsx # User profile + settings + sign out
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│ └── WelcomeScreen.tsx # Pre-login welcome with legal links
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├── i18n/ # Localization (i18n)
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│ ├── index.ts # i18n module (locale detection, t() function)
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│ ├── en.json # English translations
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│ ├── de.json # German translations
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│ ├── es.json # Spanish translations
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│ ├── fr.json # French translations
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│ └── it.json # Italian translations
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├── utils/
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│ ├── mimeTypes.ts # MIME type mapping for file extensions
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│ └── normalizeUri.ts # URI normalization for deduplication
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│ ├── FilesScreen.tsx # Processed document list
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│ └── ProfileScreen.tsx # User profile + sign out
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└── services/
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└── api.ts # DocuElevate REST API client
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```
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@@ -526,4 +408,3 @@ eas build --platform ios
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- [API Documentation](./API.md)
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- [Configuration Guide](./ConfigurationGuide.md)
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- [Deployment Guide](./DeploymentGuide.md)
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- [Apple App Store Compliance Audit](./AppleAppStoreCompliance.md)
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