StarPunk/docs/reports/micropub-v1-implementation-progress.md

Micropub V1 Implementation Progress Report

Date: 2025-11-24 Branch: feature/micropub-v1 Developer: StarPunk Fullstack Developer Agent Status: Phase 1 Complete (Token Security)

Summary

Implementation of Micropub V1 has begun following the architecture defined in:

• /home/phil/Projects/starpunk/docs/design/micropub-endpoint-design.md
• /home/phil/Projects/starpunk/docs/decisions/ADR-029-micropub-indieauth-integration.md

Phase 1 (Token Security) is complete with all tests passing.

Work Completed

Phase 1: Token Security Migration (Complete)

1. Database Migration (002_secure_tokens_and_authorization_codes.sql)

Status: ✅ Complete and tested

Changes:

• Dropped insecure tokens table (stored plain text tokens)
• Created secure tokens table with token_hash column (SHA256)
• Created authorization_codes table for IndieAuth token exchange
• Added appropriate indexes for performance
• Updated SCHEMA_SQL in database.py to match post-migration state

Breaking Change: All existing tokens are invalidated (required security fix)

2. Token Management Module (starpunk/tokens.py)

Status: ✅ Complete with comprehensive test coverage

Implemented Functions:

Token Generation & Hashing:

• generate_token() - Cryptographically secure token generation
• hash_token() - SHA256 hashing for secure storage

Access Token Management:

• create_access_token() - Generate and store access tokens
• verify_token() - Verify token validity and return token info
• revoke_token() - Soft revocation support

Authorization Code Management:

• create_authorization_code() - Generate authorization codes
• exchange_authorization_code() - Exchange codes for token info with full validation

Scope Management:

• validate_scope() - Filter requested scopes to supported ones
• check_scope() - Check if granted scopes include required scope

Security Features:

• Tokens stored as SHA256 hashes (never plain text)
• Authorization codes are single-use with replay protection
• Optional PKCE support (code_challenge/code_verifier)
• Proper UTC datetime handling for expiry
• Parameter validation (client_id, redirect_uri, me must match)

3. Test Suite (tests/test_tokens.py)

Status: ✅ 21/21 tests passing

Test Coverage:

• Token generation and hashing
• Access token creation and verification
• Token expiry and revocation
• Authorization code creation and exchange
• Replay attack protection
• Parameter validation (client_id, redirect_uri, me mismatch)
• PKCE validation (S256 method)
• Scope validation
• Empty scope authorization (per IndieAuth spec)

Technical Issues Resolved

Issue 1: Database Schema Detection

Problem: Migration system incorrectly detected fresh databases as "legacy" or "current"

Solution: Updated is_schema_current() in migrations.py to check for:

• authorization_codes table existence
• token_hash column in tokens table

This ensures fresh databases skip migrations but legacy databases apply them.

Issue 2: Datetime Timezone Mismatch

Problem: Python's datetime.now() returns local time, but SQLite's datetime('now') returns UTC

Solution: Use datetime.utcnow() consistently for all expiry calculations

Impact: Authorization codes and tokens now properly expire based on UTC time

What's Next

Phase 2: Authorization & Token Endpoints (In Progress)

Remaining Tasks:

1. Token Endpoint (/auth/token) - REQUIRED FOR V1

   • Exchange authorization code for access token
   • Validate all parameters (code, client_id, redirect_uri, me)
   • Optional PKCE verification
   • Return token response per IndieAuth spec

2. Authorization Endpoint (/auth/authorization) - REQUIRED FOR V1

   • Display authorization form
   • Require admin session
   • Generate authorization code
   • Redirect with code

3. Micropub Endpoint (/micropub) - REQUIRED FOR V1

   • Bearer token authentication
   • Handle create action only (V1 scope)
   • Parse form-encoded and JSON requests
   • Create notes via existing notes.py CRUD
   • Return 201 with Location header
   • Query endpoints (config, source, syndicate-to)

4. Integration Testing

   • Test complete flow: authorization → token exchange → post creation
   • Test with real Micropub clients (Indigenous, Quill)

5. Documentation Updates

   • Update CHANGELOG.md (breaking change)
   • Increment version to 0.10.0
   • API documentation

Architecture Decisions Made

No new architectural decisions were required. Implementation follows ADR-029 exactly.

Questions for Architect

None at this time. Phase 1 implementation matches the design specifications.

Files Changed

New Files

• migrations/002_secure_tokens_and_authorization_codes.sql - Database migration
• starpunk/tokens.py - Token management module
• tests/test_tokens.py - Token test suite

Modified Files

• starpunk/database.py - Updated SCHEMA_SQL for secure tokens
• starpunk/migrations.py - Updated schema detection logic

Test Results

tests/test_tokens.py::test_generate_token PASSED
tests/test_tokens.py::test_hash_token PASSED
tests/test_tokens.py::test_hash_token_different_inputs PASSED
tests/test_tokens.py::test_create_access_token PASSED
tests/test_tokens.py::test_verify_token_invalid PASSED
tests/test_tokens.py::test_verify_token_expired PASSED
tests/test_tokens.py::test_revoke_token PASSED
tests/test_tokens.py::test_revoke_nonexistent_token PASSED
tests/test_tokens.py::test_create_authorization_code PASSED
tests/test_tokens.py::test_exchange_authorization_code PASSED
tests/test_tokens.py::test_exchange_authorization_code_invalid PASSED
tests/test_tokens.py::test_exchange_authorization_code_replay_protection PASSED
tests/test_tokens.py::test_exchange_authorization_code_client_id_mismatch PASSED
tests/test_tokens.py::test_exchange_authorization_code_redirect_uri_mismatch PASSED
tests/test_tokens.py::test_exchange_authorization_code_me_mismatch PASSED
tests/test_tokens.py::test_pkce_code_challenge_validation PASSED
tests/test_tokens.py::test_pkce_missing_verifier PASSED
tests/test_tokens.py::test_pkce_wrong_verifier PASSED
tests/test_tokens.py::test_validate_scope PASSED
tests/test_tokens.py::test_check_scope PASSED
tests/test_tokens.py::test_empty_scope_authorization PASSED

21 passed in 0.58s

Commits

• 3b41029 - feat: Implement secure token management for Micropub
• e2333cb - chore: Add documentation-manager agent configuration

Estimated Completion

Based on architect's estimates:

• Phase 1: 2-3 days (COMPLETE)
• Phase 2-4: 5-7 days remaining
• Total V1: 7-10 days

Current progress: ~25% complete (Phase 1 of 4 phases)

Next Session Goals

1. Implement token endpoint (/auth/token)
2. Implement authorization endpoint (/auth/authorization)
3. Create authorization form template
4. Test authorization flow end-to-end

---

Report Generated: 2025-11-24 Agent: StarPunk Fullstack Developer Branch: feature/micropub-v1 Version Target: 0.10.0