mirror of https://github.com/jetkvm/kvm.git
Cleanup: remove unnecessary md file
This commit is contained in:
Alex P
parent
40ccecc902
commit
711f7818bf
228
FIXES_SUMMARY.md
228
FIXES_SUMMARY.md
|
|
@ -1,228 +0,0 @@
|
||||||
# Multi-Session PR #880 - Implementation Status
|
|
||||||
|
|
||||||
## Status: CORE FIXES COMPLETED
|
|
||||||
|
|
||||||
All critical and high-priority issues (#1-10) have been implemented and two additional practical enhancements (#13, #16) have been added.
|
|
||||||
|
|
||||||
## Summary
|
|
||||||
|
|
||||||
**Total Issues Identified**: 22
|
|
||||||
**Completed**: 12 (Issues #1-10, #13, #16)
|
|
||||||
**Remaining**: 10 (mostly testing and documentation tasks)
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
## Completed Fixes
|
|
||||||
|
|
||||||
### Phase 1: Critical Race Conditions ✅ COMPLETED
|
|
||||||
|
|
||||||
#### Issue #1: Dual-Primary Race Condition ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Priority**: CRITICAL
|
|
||||||
**Files**: `session_manager.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Added `primaryPromotionLock` mutex for atomic primary promotions
|
|
||||||
- Implemented double-locking pattern (primaryPromotionLock → mu)
|
|
||||||
- Added corruption detection and auto-fix in `transferPrimaryRole()`
|
|
||||||
- Primary count verification after lock acquisition
|
|
||||||
- Force-demote duplicate primaries
|
|
||||||
|
|
||||||
#### Issue #2: Nickname Index Race Condition ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Priority**: CRITICAL
|
|
||||||
**Files**: `session_manager.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Nickname reservation moved before session addition
|
|
||||||
- Deferred cleanup for failed additions
|
|
||||||
- Updated `RemoveSession()` to clean up nickname index
|
|
||||||
- Removed duplicate nicknameIndex updates
|
|
||||||
|
|
||||||
#### Issue #3: Memory Leak in Grace Period ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Priority**: HIGH
|
|
||||||
**Files**: `session_manager.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Eviction logic verified to be working correctly
|
|
||||||
- Grace period limit enforcement (maxGracePeriodEntries = 10)
|
|
||||||
- Oldest entry eviction when limit reached
|
|
||||||
- Emergency cleanup if eviction fails
|
|
||||||
|
|
||||||
#### Issue #4: Broadcast Storm Prevention ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Priority**: HIGH
|
|
||||||
**Files**: `session_manager.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Implemented `broadcastWorker()` goroutine
|
|
||||||
- Created broadcast coalescing with `atomic.Bool` and channel
|
|
||||||
- Replaced all direct `broadcastSessionListUpdate()` calls with signal-based approach
|
|
||||||
- Implemented `executeBroadcast()` with actual broadcast logic
|
|
||||||
|
|
||||||
#### Issue #5: Blacklist Thread-Safety ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Priority**: MEDIUM-HIGH
|
|
||||||
**Files**: `session_manager.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Verified `isSessionBlacklisted()` is only called within locked functions
|
|
||||||
- In-place cleanup with zero allocations
|
|
||||||
- All callers already hold the session manager lock
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
### Phase 2: High-Priority Security Issues ✅ COMPLETED
|
|
||||||
|
|
||||||
#### Issue #6: Goroutine Leak in Cleanup ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `webrtc.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Verified cleanup properly closes all channels (rpcQueue, hidQueue, keysDownStateQueue)
|
|
||||||
- Goroutines properly terminate when channels close
|
|
||||||
- Double-cleanup protection with mutex
|
|
||||||
|
|
||||||
#### Issue #7: HID RPC Permission Check ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `hidrpc.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Added `PermissionVideoView` check before handshake
|
|
||||||
- Prevents pending sessions from establishing HID RPC communication
|
|
||||||
- Logs blocked handshake attempts
|
|
||||||
|
|
||||||
#### Issue #8: Emergency Promotion Rate Limit ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `session_cleanup_handlers.go`, `session_manager.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Sliding window rate limiting (max 3 promotions per 60 seconds)
|
|
||||||
- 10-second cooldown between emergency promotions
|
|
||||||
- Consecutive emergency promotion counter (max 3)
|
|
||||||
- Rate limit logging and attack detection
|
|
||||||
|
|
||||||
#### Issue #9: Nickname Validation ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `jsonrpc_session_handlers.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Enhanced `validateNickname()` with:
|
|
||||||
- Control character detection (ASCII < 32 or 127)
|
|
||||||
- Zero-width character blocking (U+200B to U+200D)
|
|
||||||
- Unicode normalization checks
|
|
||||||
- Length limits (2-30 characters)
|
|
||||||
- Pattern validation (alphanumeric, spaces, - _ . @)
|
|
||||||
|
|
||||||
#### Issue #10: RPC Queue Monitoring ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `webrtc.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Added queue length monitoring (warns at 200+ messages)
|
|
||||||
- Logs session ID and queue length for debugging
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
### Phase 3: Code Quality Improvements (PARTIALLY COMPLETED)
|
|
||||||
|
|
||||||
#### Issue #11: Trust Scoring Algorithm Enhancement
|
|
||||||
**Status**: SKIPPED (current implementation is sufficient)
|
|
||||||
**Notes**: Current trust scoring includes age, previous primary status, mode preferences, and nickname requirements
|
|
||||||
|
|
||||||
#### Issue #12: Grace Period Logic Refactoring
|
|
||||||
**Status**: SKIPPED (code is well-structured)
|
|
||||||
**Notes**: Grace period logic is clear and properly separated into handlers
|
|
||||||
|
|
||||||
#### Issue #13: WebSocket Write Timeouts ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `webrtc.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Added 5-second context timeout to all WebSocket writes
|
|
||||||
- Applied to `sendWebSocketSignal()`
|
|
||||||
- Applied to ICE candidate writes in `OnICECandidate` callback
|
|
||||||
- Applied to buffered candidate flush in `flushCandidates()`
|
|
||||||
|
|
||||||
#### Issue #14: TOCTOU Verification Tests
|
|
||||||
**Status**: DEFERRED (testing task)
|
|
||||||
**Notes**: Requires comprehensive test suite development
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
### Phase 4: Performance & Security Hardening (PARTIALLY COMPLETED)
|
|
||||||
|
|
||||||
#### Issue #15: Adaptive Broadcast Throttling
|
|
||||||
**Status**: SKIPPED (current throttling is sufficient)
|
|
||||||
**Notes**: Broadcast coalescing (Issue #4) already provides effective throttling
|
|
||||||
|
|
||||||
#### Issue #16: Global RPC Rate Limiting ✅
|
|
||||||
**Status**: COMPLETE
|
|
||||||
**Files**: `jsonrpc.go`
|
|
||||||
**Implementation**:
|
|
||||||
- Added global rate limiter (max 2000 RPC/second across all sessions)
|
|
||||||
- Protects against coordinated DoS from multiple malicious sessions
|
|
||||||
- Checked before per-session rate limit
|
|
||||||
- Sliding window implementation with mutex protection
|
|
||||||
|
|
||||||
#### Issue #17: Emergency Promotion Auditing
|
|
||||||
**Status**: COMPLETE (via logging)
|
|
||||||
**Notes**: Emergency promotions already have comprehensive logging with trust scores, consecutive counts, and reasons
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
### Phase 5: Testing & Documentation (NOT STARTED)
|
|
||||||
|
|
||||||
#### Issues #18-22: Testing and Documentation
|
|
||||||
**Status**: DEFERRED
|
|
||||||
**Description**:
|
|
||||||
- #18: Comprehensive unit tests
|
|
||||||
- #19: Race detector testing
|
|
||||||
- #20: Integration tests
|
|
||||||
- #21: Load testing with 10+ sessions
|
|
||||||
- #22: Documentation updates
|
|
||||||
|
|
||||||
**Notes**: User requested "we'll create the tests at the end"
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
## Files Modified
|
|
||||||
|
|
||||||
| File | Changes | Issues Fixed |
|
|
||||||
|------|---------|--------------|
|
|
||||||
| `session_manager.go` | Added atomic import, primaryPromotionLock, broadcast coalescing, double-locking logic | #1, #2, #3, #4, #5 |
|
|
||||||
| `session_cleanup_handlers.go` | Sliding window rate limiting for emergency promotions | #8 |
|
|
||||||
| `hidrpc.go` | Permission check for handshake | #7 |
|
|
||||||
| `jsonrpc_session_handlers.go` | Enhanced nickname validation | #9 |
|
|
||||||
| `jsonrpc.go` | Global RPC rate limiting | #16 |
|
|
||||||
| `webrtc.go` | RPC queue monitoring, WebSocket write timeouts | #10, #13 |
|
|
||||||
|
|
||||||
**Total Lines Changed**: ~265 lines of new/modified code
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
## Risk Assessment
|
|
||||||
|
|
||||||
**Mitigated Risks**:
|
|
||||||
- ✅ Dual-primary race condition (Issue #1) - Fixed with double-locking
|
|
||||||
- ✅ Nickname index corruption (Issue #2) - Fixed with atomic reservation
|
|
||||||
- ✅ Broadcast storms (Issue #4) - Fixed with coalescing
|
|
||||||
- ✅ Emergency promotion abuse (Issue #8) - Fixed with rate limiting
|
|
||||||
- ✅ Nickname injection (Issue #9) - Fixed with enhanced validation
|
|
||||||
- ✅ WebSocket blocking (Issue #13) - Fixed with timeouts
|
|
||||||
- ✅ Coordinated DoS (Issue #16) - Fixed with global rate limiting
|
|
||||||
|
|
||||||
**Remaining Risks**:
|
|
||||||
- ⚠️ Limited testing coverage (Issues #18-22 deferred)
|
|
||||||
- ⚠️ No automated regression tests
|
|
||||||
|
|
||||||
**Recommendation**: Deploy to staging environment and monitor for 1-2 weeks before production deployment.
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
## Summary of Implementation Approach
|
|
||||||
|
|
||||||
The implementation focused on **core functionality and security** rather than perfect test coverage:
|
|
||||||
|
|
||||||
1. **Phase 1 & 2 (Critical & High Priority)**: All 10 issues fully implemented
|
|
||||||
2. **Phase 3 & 4 (Enhancements)**: Implemented 2 practical improvements (#13, #16)
|
|
||||||
3. **Phase 5 (Testing)**: Deferred per user request
|
|
||||||
|
|
||||||
This approach prioritizes **working, secure code** over exhaustive testing, with the understanding that tests will be added in a follow-up effort.
|
|
||||||
|
|
||||||
---
|
|
||||||
|
|
||||||
## Build Verification
|
|
||||||
|
|
||||||
**Status**: PENDING
|
|
||||||
**Next Step**: Build in devpod environment to verify all changes compile and run correctly
|
|
||||||
Loading…
Reference in New Issue