brandon/nextcloud-mcp-server
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98 Commits

Author SHA1 Message Date
Chris Coutinho e331544cee feat: Implement RFC 8693 token exchange for Keycloak (ADR-002 Tier 2) 
Implements OAuth 2.0 Token Exchange (RFC 8693) enabling the MCP server to
exchange service account tokens for user-scoped tokens. This provides an
alternative to refresh tokens for background operations.

**Core Implementation:**
- Added `get_service_account_token()` method to KeycloakOAuthClient for
  client_credentials grant
- Added `exchange_token_for_user()` method implementing RFC 8693 token exchange
- Fixed Fernet encryption key handling in RefreshTokenStorage (was incorrectly
  base64 decoding already-encoded keys)
- Updated OAuth configuration to support offline_access scope and refresh token
  storage infrastructure

**Keycloak Configuration:**
- Enabled `serviceAccountsEnabled` in realm-export.json
- Added `token.exchange.grant.enabled` attribute
- Added `client.token.exchange.standard.enabled` attribute (required for
  Keycloak 26.2+ Standard Token Exchange V2)
- Fresh Keycloak imports now correctly enable token exchange

**Docker Compose:**
- Added TOKEN_ENCRYPTION_KEY and ENABLE_OFFLINE_ACCESS environment variables
- Created oauth-tokens volume for refresh token storage
- Configured both mcp-oauth and mcp-keycloak services

**Testing & Documentation:**
- Added tests/manual/test_token_exchange.py - Validates complete RFC 8693 flow
- Added tests/manual/test_nextcloud_impersonate.py - Documents session-based
  impersonation limitations
- Added docs/oauth-impersonation-findings.md - Comprehensive investigation
  findings and resolution documentation

**Verified Working:**
✅ Service account token acquisition (client_credentials grant)
✅ RFC 8693 token exchange for internal-to-internal tokens
✅ Exchanged tokens validate with Nextcloud APIs
✅ Keycloak 26.4.2 Standard Token Exchange V2 support

**Known Limitations:**
- User impersonation (requested_subject) requires Keycloak Legacy V1 with
  preview features
- Cross-client token exchange limited to same realm
- Refresh token storage infrastructure ready but unused (MCP protocol limitation)

Dependencies: aiosqlite>=0.20.0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-02 22:03:19 +01:00
github-actions[bot] 5259658458 bump: version 0.22.6 → 0.22.7 2025-10-29 11:18:41 +00:00
github-actions[bot] e1aca04aff bump: version 0.22.5 → 0.22.6 2025-10-29 10:57:44 +00:00
github-actions[bot] e647c87dd8 bump: version 0.22.4 → 0.22.5 2025-10-29 10:54:54 +00:00
github-actions[bot] 202058bdc8 bump: version 0.22.3 → 0.22.4 2025-10-29 10:44:11 +00:00
github-actions[bot] 8221046d8a bump: version 0.22.2 → 0.22.3 2025-10-29 10:35:58 +00:00
github-actions[bot] 9ec7637579 bump: version 0.22.1 → 0.22.2 2025-10-29 10:30:39 +00:00
github-actions[bot] 3878beaf65 bump: version 0.22.0 → 0.22.1 2025-10-29 10:17:08 +00:00
github-actions[bot] 0e7e74867f bump: version 0.21.0 → 0.22.0 2025-10-29 09:32:27 +00:00
github-actions[bot] 57a2157c58 bump: version 0.20.0 → 0.21.0 2025-10-25 18:33:56 +00:00
yuisheaven f0e5333e43 Merge branch 'master' into feature/introduce_files_parsing_with_unstructured_service_for_webdav_files_retrieval 2025-10-25 17:23:38 +02:00
github-actions[bot] 04e0ab127a bump: version 0.19.1 → 0.20.0 2025-10-24 18:24:45 +00:00
Chris Coutinho 1117a83a52 Merge pull request #237 from cbcoutinho/feature/app-scopes 
Feature/app scopes
 2025-10-24 20:24:15 +02:00
github-actions[bot] 50a824155c bump: version 0.19.0 → 0.19.1 2025-10-24 04:36:51 +00:00
renovate-bot-cbcoutinho[bot] 3baf10662f fix(deps): update dependency mcp to >=1.19,<1.20 2025-10-24 04:06:55 +00:00
Chris Coutinho d452684535 feat: Split read/write scopes into app:read/write scopes 2025-10-24 04:38:49 +02:00
github-actions[bot] bfbaed9a66 bump: version 0.18.0 → 0.19.0 2025-10-23 23:50:51 +00:00
yuisheaven 29df645d53 Merge branch 'master' into feature/introduce_files_parsing_with_unstructured_service_for_webdav_files_retrieval 2025-10-23 21:30:09 +02:00
github-actions[bot] 87c6f077f3 bump: version 0.17.1 → 0.18.0 2025-10-23 10:23:48 +00:00
Chris Coutinho c069d78f80 feat: Initialize JWT-scoped tools 2025-10-22 06:21:16 +02:00
yuisheaven 98627593d5 corrected smaller merge issues 2025-10-21 20:55:33 +02:00
yuisheaven 64649c902d Merge branch 'master' into feature/introduce_files_parsing_with_unstructured_service_for_webdav_files_retrieval 2025-10-21 20:37:00 +02:00
github-actions[bot] 4984496d81 bump: version 0.17.0 → 0.17.1 2025-10-20 21:16:09 +00:00
Chris Coutinho e8f1340133 fix(caldav): Fix caldav search() due to missing todos 2025-10-20 22:18:46 +02:00
Chris Coutinho 6ba87e7e05 chore: update caldav ref 2025-10-20 11:52:29 +02:00
github-actions[bot] 45bbf97033 bump: version 0.16.0 → 0.17.0 2025-10-19 22:55:23 +00:00
Chris Coutinho a143123acc fix(caldav): Check that calendar exists after creation to avoid race condition 
Verify that field preservation tests still operate
 2025-10-19 23:44:39 +02:00
Chris Coutinho 92e18825bc feat(caldav): Add support for tasks 2025-10-19 18:02:43 +02:00
Chris Coutinho d398a8c8e6 refactor: Migrate from internal CalendarClient to caldav library 2025-10-19 15:47:17 +02:00
github-actions[bot] cb7a609ec2 bump: version 0.15.2 → 0.16.0 2025-10-19 00:13:49 +00:00
Chris Coutinho 5395f8d3d6 chore: Update lock file 2025-10-19 02:02:05 +02:00
Chris Coutinho b72514bb32 ci: Add pytest-timeout to dev deps 2025-10-19 00:27:19 +02:00
Chris Coutinho 1459fe9bc8 test: Replace pytest-asyncio plugin fixtures with anyio fixtures 2025-10-18 22:02:25 +02:00
github-actions[bot] a389f2940e bump: version 0.15.1 → 0.15.2 2025-10-17 23:17:32 +00:00
github-actions[bot] 7549c988f4 bump: version 0.15.0 → 0.15.1 2025-10-17 02:49:37 +00:00
github-actions[bot] 0aeef1b87e bump: version 0.14.3 → 0.15.0 2025-10-17 01:25:56 +00:00
github-actions[bot] 6734de8389 bump: version 0.14.2 → 0.14.3 2025-10-17 00:04:25 +00:00
renovate-bot-cbcoutinho[bot] 16b9123af3 fix(deps): update dependency mcp to >=1.18,<1.19 2025-10-16 19:20:47 +00:00
github-actions[bot] e0a68d47a5 bump: version 0.14.1 → 0.14.2 2025-10-16 08:32:29 +00:00
renovate-bot-cbcoutinho[bot] 7b2002c1b5 fix(deps): update dependency pillow to v12 2025-10-15 22:09:01 +00:00
github-actions[bot] 9e4c20a4b1 bump: version 0.14.0 → 0.14.1 2025-10-15 15:26:35 +00:00
github-actions[bot] 46deb0f726 bump: version 0.13.0 → 0.14.0 2025-10-15 09:53:45 +00:00
github-actions[bot] 52044ef053 bump: version 0.12.6 → 0.13.0 2025-10-13 23:30:55 +00:00
Chris Coutinho 37b0577bfd test: Add asyncio tests using Playwright 2025-10-14 01:23:38 +02:00
github-actions[bot] b19eb37ee2 bump: version 0.12.5 → 0.12.6 2025-10-11 16:31:34 +00:00
renovate-bot-cbcoutinho[bot] 3340a63f86 fix(deps): update dependency mcp to >=1.17,<1.18 2025-10-10 16:08:58 +00:00
yuisheaven ce5724f05e adjusted pyproject.toml config and uv.lock 2025-10-04 04:26:33 +02:00
github-actions[bot] b60da57597 bump: version 0.12.4 → 0.12.5 2025-10-03 06:20:51 +00:00
renovate-bot-cbcoutinho[bot] b10fba0678 fix(deps): update dependency mcp to >=1.16,<1.17 2025-10-02 22:10:23 +00:00
renovate-bot-cbcoutinho[bot] 55945c6c0f chore(deps): lock file maintenance 2025-09-29 04:12:15 +00:00