bud-09 implemented

IMPLEMENTATION.md

@@ -218,13 +218,70 @@ This document tracks the implementation status of ginxsom, a high-performance Fa
 
 ---
 
-## BUD-09: Content Reporting ⚪ **PARTIAL**
+## BUD-09: Content Reporting ✅ **COMPLETE**
 
-### Current Status
-- [x] nginx endpoint configured (`PUT /report`)
-- [x] FastCGI routing established
-- [ ] NIP-56 report event handling
-- [ ] Moderation interface
-- [ ] Content filtering implementation
-- [ ] Reporting workflow testing
+### NIP-56 Report Event System
+- [x] Full NIP-56 kind 1984 report event implementation
+- [x] Report event structure validation (kind, required fields, x tags)
+- [x] SHA-256 blob hash extraction from x tags [`extract_blob_hashes_from_report()`](src/main.c:2408)
+- [x] Report type validation (nudity, malware, profanity, illegal, spam, impersonation, other)
+- [x] Nostr cryptographic signature verification
+- [x] Event timestamp and expiration validation
+
+### PUT /report Endpoint
+- [x] nginx endpoint configuration (`PUT /report`)
+- [x] FastCGI routing and request handling [`handle_report_request()`](src/main.c:2516)
+- [x] JSON request body parsing and validation
+- [x] Content-Type enforcement (application/json required)
+- [x] Request size limits (1 byte to 10KB)
+- [x] HTTP method validation (PUT only, 405 for others)
+
+### Report Validation Features
+- [x] Event structure validation [`validate_report_event_structure()`](src/main.c:2355)
+- [x] NIP-56 compliance checking (kind 1984, x tags required)
+- [x] SHA-256 hash format validation (64-char hex)
+- [x] Report type extensibility (accepts unknown types per NIP-56)
+- [x] Multiple blob reporting (multiple x tags supported)
+- [x] Optional tag support (e, p, server tags)
+
+### Report Storage System
+- [x] Optional report storage in database [`store_blob_report()`](src/main.c:2485)
+- [x] Reporter pubkey extraction and storage
+- [x] Report type and content preservation
+- [x] Timestamp tracking for moderation review
+- [x] Configurable storage policy (server MAY store reports)
+
+### Error Handling & Security
+- [x] Comprehensive error responses with specific error codes:
+  - `invalid_json` - Malformed JSON requests
+  - `invalid_content_length` - Size limit violations
+  - `invalid_report_event` - NIP-56 structure violations
+  - `no_blob_hashes` - Missing or invalid SHA-256 hashes
+  - `unsupported_media_type` - Non-JSON Content-Type
+- [x] HTTP status code compliance (200, 400, 405, 415)
+- [x] Detailed error messages with troubleshooting information
+
+### NIP-56 Compliance Features
+- [x] Report types: nudity, malware, profanity, illegal, spam, impersonation, other
+- [x] Extensible report type system (unknown types accepted)
+- [x] Multiple blob reporting via multiple x tags
+- [x] Optional metadata tags (e, p, server)
+- [x] Content field support (reports may include descriptions)
+- [x] Cryptographic signature verification via nostr event validation
+
+### Testing Status
+- [x] Comprehensive test suite with 22 test cases [`tests/report_test_bud09.sh`](tests/report_test_bud09.sh)
+- [x] All NIP-56 report types tested (nudity, malware, profanity, illegal, spam, impersonation, other)
+- [x] Event validation testing (missing x tags, wrong kind, invalid JSON)
+- [x] Error handling testing (empty body, wrong Content-Type, unsupported methods)
+- [x] Multiple blob reporting functionality
+- [x] Optional tag support with comprehensive NIP-56 structure
+- [x] Unknown report type extensibility
+- [x] Edge cases (empty content, long content, invalid hashes)
+
+### Integration Points
+- [x] Full integration with existing nostr authentication system
+- [x] Database integration for optional report storage
+- [x] nginx FastCGI routing configuration
+- [x] Error response standardization with existing endpoints