Fixes NC PHP app (Astrolabe) OAuth integration by making token validation
more lenient for management API access.
Problem:
- Astrolabe calls Nextcloud OIDC token endpoint via internal URL (http://localhost)
- Tokens are issued with iss: http://localhost (internal)
- MCP server expects iss: http://localhost:8080 (external)
- Token validation failed with "Invalid issuer"
Solution:
- Add skip_issuer_check parameter to _verify_jwt_signature()
- verify_token_for_management_api() now skips both audience and issuer checks
- Security maintained: signature still verified, authorization checked by API
Also includes related fixes from previous session:
- Update test selectors for Vue 3 UI ("Enable Semantic Search")
- Fix OIDC discovery URL transformation in OAuthController.php
- Add overwrite.cli.url to setup hook for proper external URLs
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Remove URL rewriting logic from MCP server that was converting
public URLs to internal Docker URLs. This was a workaround for
Nextcloud's overwritehost setting forcing URLs to localhost:8080.
Changes:
- Remove OIDC endpoint rewriting in app.py (setup_oauth_config)
- Remove OIDC_JWKS_URI override support (no longer needed)
- Remove URL rewriting in browser_oauth_routes.py
- Remove URL rewriting in token_broker.py
- Update Helm chart values and README
- Add hybrid auth setup unit tests
- Update Astrolabe admin UI for Vue 3
The proper fix is in the previous commit which removes the
overwritehost setting from Nextcloud, allowing it to respect
the Host header from incoming requests.
Adds complete app password provisioning workflow for multi-user BasicAuth
deployments, allowing users to independently enable background sync by
generating and storing Nextcloud app passwords.
**New Components:**
Backend (PHP):
- CredentialsController: Validates and stores app passwords
* Validates app password format and authenticity via OCS API
* Stores encrypted passwords in oc_preferences
* Provides status and credential management endpoints
- AstrolabeAdminSettings: Admin configuration page for MCP server URL
- AstrolabeAdminSettingsListener: Event listener for admin section
- Updated McpTokenStorage: Added background sync credential methods
Frontend:
- personalSettings.js: Form handling for app password entry
* AJAX submission with error handling
* Shows success/error notifications
* Triggers page reload after successful save
- settings.css: Styling for settings pages
- Updated personal.php template: Two-option UI
* Option 1: OAuth refresh token (future, not yet available)
* Option 2: App password (works today, recommended)
* Shows "Active" badge when provisioned
* Displays credential type and provisioned timestamp
Routes:
- POST /api/v1/background-sync/credentials - Store app password
- GET /api/v1/background-sync/status - Get provisioning status
- DELETE /api/v1/background-sync/credentials - Revoke credentials
- GET /api/v1/background-sync/credentials/{userId} - Admin only
**Testing:**
- test_astrolabe_settings_buttons.py: Integration test for UI buttons
**Workflow:**
1. User generates app password in Nextcloud Security settings
2. User navigates to Astrolabe personal settings
3. User enters app password in "Option 2: App Password" form
4. Backend validates password via OCS API call
5. Password stored encrypted in oc_preferences
6. Page reloads showing "Active" badge with credential details
7. MCP server can now use stored password for background operations
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit fixes two OAuth issues in the Astrolabe app:
1. **Always use PKCE (RFC 9207)**:
- PKCE is now used for all OAuth flows (public and confidential clients)
- Previous code only used PKCE for public clients, causing failures
- Confidential clients now use both PKCE + client_secret (defense in depth)
- Nextcloud OIDC provider requires PKCE, so token exchange was failing
2. **Add token_broker to oauth_context**:
- Token broker is now stored in oauth_context for management API access
- Fixes "Token broker not configured" error when revoking access
- Revoke endpoint needs token_broker to delete refresh tokens and invalidate cache
Changes:
- OAuthController.php: Always generate PKCE verifier/challenge for all clients
- OAuthController.php: Always include code_verifier in token exchange
- app.py: Store token_broker in oauth_context after creation
Fixes:
- Astrolabe OAuth flow now works with Nextcloud OIDC
- Revoke/disconnect functionality now works in Astrolabe settings
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Chris Coutinho