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Author SHA1 Message Date
Alexander Whitestone
b79805118e fix: Add WebSocket security - authentication, rate limiting, localhost binding (#1504)
This commit addresses the security vulnerability where the WebSocket
gateway was exposed on 0.0.0.0 without authentication.

## Changes

### Security Improvements
1. **Localhost binding by default**: Changed HOST from "0.0.0.0" to "127.0.0.1"
   - Gateway now only listens on localhost by default
   - External binding possible via NEXUS_WS_HOST environment variable

2. **Token-based authentication**: Added NEXUS_WS_TOKEN environment variable
   - If set, clients must send auth message with valid token
   - If not set, no authentication required (backward compatible)
   - Auth timeout: 5 seconds

3. **Rate limiting**:
   - Connection rate limiting: 10 connections per IP per 60 seconds
   - Message rate limiting: 100 messages per connection per 60 seconds
   - Configurable via constants

4. **Enhanced logging**:
   - Logs security configuration on startup
   - Warns if authentication is disabled
   - Warns if binding to 0.0.0.0

### Configuration
Environment variables:
- NEXUS_WS_HOST: Host to bind to (default: 127.0.0.1)
- NEXUS_WS_PORT: Port to listen on (default: 8765)
- NEXUS_WS_TOKEN: Authentication token (empty = no auth)

### Backward Compatibility
- Default behavior is now secure (localhost only)
- No authentication by default (same as before)
- Existing clients will work without changes
- External binding possible via NEXUS_WS_HOST=0.0.0.0

## Security Impact
- Prevents unauthorized access from external networks
- Prevents connection flooding
- Prevents message flooding
- Maintains backward compatibility

Fixes #1504
2026-04-14 23:02:37 -04:00
4 changed files with 204 additions and 324 deletions

21
.github/CODEOWNERS vendored
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@@ -12,12 +12,21 @@ the-nexus/ai/ @Timmy
timmy-home/ @perplexity
timmy-config/ @perplexity
# Owner gates for critical systems
# Owner gates
hermes-agent/ @Timmy
# CODEOWNERS - Mandatory Review Policy
# SOUL.md requires review from @Timmy (canonical location: timmy-home/SOUL.md)
SOUL.md @Timmy
timmy-home/SOUL.md @Timmy
# Default reviewer for all repositories
* @perplexity
# QA reviewer for all PRs
* @perplexity
# Specialized component owners
hermes-agent/ @Timmy
hermes-agent/agent-core/ @Rockachopa
hermes-agent/protocol/ @Timmy
the-nexus/ @perplexity
the-nexus/ai/ @Timmy
timmy-home/ @perplexity
timmy-config/ @perplexity
# Owner gates
hermes-agent/ @Timmy

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@@ -1,195 +0,0 @@
#!/usr/bin/env python3
"""
Check for duplicate SOUL.md files across repositories.
Issue #1443: decide: Establish SOUL.md canonical location
"""
import json
import os
import sys
import urllib.request
from typing import Dict, List, Any, Optional
# Configuration
GITEA_BASE = "https://forge.alexanderwhitestone.com/api/v1"
TOKEN_PATH = os.path.expanduser("~/.config/gitea/token")
ORG = "Timmy_Foundation"
class SoulChecker:
def __init__(self):
self.token = self._load_token()
def _load_token(self) -> str:
"""Load Gitea API token."""
try:
with open(TOKEN_PATH, "r") as f:
return f.read().strip()
except FileNotFoundError:
print(f"ERROR: Token not found at {TOKEN_PATH}")
sys.exit(1)
def _api_request(self, endpoint: str) -> Any:
"""Make authenticated Gitea API request."""
url = f"{GITEA_BASE}{endpoint}"
headers = {"Authorization": f"token {self.token}"}
req = urllib.request.Request(url, headers=headers)
try:
with urllib.request.urlopen(req) as resp:
return json.loads(resp.read())
except urllib.error.HTTPError as e:
if e.code == 404:
return None
error_body = e.read().decode() if e.fp else "No error body"
print(f"API Error {e.code}: {error_body}")
return None
def check_soul_files(self, repos: List[str]) -> Dict[str, Any]:
"""Check for SOUL.md files in repositories."""
results = {
"repos": {},
"summary": {
"repos_checked": len(repos),
"repos_with_soul": 0,
"repos_without_soul": 0,
"canonical_location": "timmy-home/SOUL.md"
}
}
for repo in repos:
# Check for SOUL.md
endpoint = f"/repos/{ORG}/{repo}/contents/SOUL.md"
soul_file = self._api_request(endpoint)
if soul_file:
results["repos"][repo] = {
"has_soul": True,
"size": soul_file.get("size", 0),
"path": soul_file.get("path", "SOUL.md"),
"html_url": soul_file.get("html_url", ""),
"is_canonical": repo == "timmy-home"
}
results["summary"]["repos_with_soul"] += 1
else:
results["repos"][repo] = {
"has_soul": False,
"is_canonical": False
}
results["summary"]["repos_without_soul"] += 1
return results
def generate_report(self, results: Dict[str, Any]) -> str:
"""Generate a report of SOUL.md locations."""
report = "# SOUL.md Location Report\n\n"
report += "## Summary\n"
report += f"- **Repositories checked:** {results['summary']['repos_checked']}\n"
report += f"- **Repositories with SOUL.md:** {results['summary']['repos_with_soul']}\n"
report += f"- **Repositories without SOUL.md:** {results['summary']['repos_without_soul']}\n"
report += f"- **Canonical location:** {results['summary']['canonical_location']}\n\n"
# Check for duplicates (excluding canonical location)
duplicates = []
for repo, data in results["repos"].items():
if data["has_soul"] and not data["is_canonical"]:
duplicates.append(repo)
if duplicates:
report += "⚠️ **Duplicate SOUL.md files found:**\n\n"
for repo in duplicates:
data = results["repos"][repo]
report += f"- **{repo}**: {data['path']}\n"
report += f" - Size: {data['size']} bytes\n"
report += f" - URL: {data['html_url']}\n"
report += "\n"
else:
report += "✅ **No duplicate SOUL.md files found.**\n\n"
report += "## Repository Details\n\n"
for repo, data in results["repos"].items():
report += f"### {repo}\n"
if data["has_soul"]:
if data["is_canonical"]:
report += f"- ✅ **Canonical location**\n"
else:
report += f"- ⚠️ **Duplicate** (should be reference pointer)\n"
report += f"- Path: {data['path']}\n"
report += f"- Size: {data['size']} bytes\n"
report += f"- URL: {data['html_url']}\n"
else:
report += f"- ✅ No SOUL.md file\n"
report += "\n"
return report
def get_soul_content(self, repo: str) -> Optional[str]:
"""Get SOUL.md content from a repository."""
endpoint = f"/repos/{ORG}/{repo}/contents/SOUL.md"
soul_file = self._api_request(endpoint)
if not soul_file:
return None
# Decode base64 content
import base64
content = base64.b64decode(soul_file["content"]).decode("utf-8")
return content
def main():
"""Main entry point for SOUL.md checker."""
import argparse
parser = argparse.ArgumentParser(description="Check for duplicate SOUL.md files")
parser.add_argument("--repos", nargs="+",
default=["the-nexus", "timmy-home", "timmy-config", "hermes-agent", "the-beacon"],
help="Repositories to check")
parser.add_argument("--report", action="store_true", help="Generate report")
parser.add_argument("--json", action="store_true", help="Output JSON instead of report")
parser.add_argument("--content", action="store_true", help="Show SOUL.md content")
args = parser.parse_args()
checker = SoulChecker()
if args.content:
# Show SOUL.md content from timmy-home
content = checker.get_soul_content("timmy-home")
if content:
print("SOUL.md content from timmy-home:")
print("=" * 60)
print(content)
else:
print("SOUL.md not found in timmy-home")
else:
# Check for SOUL.md files
results = checker.check_soul_files(args.repos)
if args.json:
print(json.dumps(results, indent=2))
elif args.report:
report = checker.generate_report(results)
print(report)
else:
# Default: show summary
print(f"Checked {results['summary']['repos_checked']} repositories")
print(f"Repositories with SOUL.md: {results['summary']['repos_with_soul']}")
print(f"Canonical location: {results['summary']['canonical_location']}")
# Check for duplicates
duplicates = []
for repo, data in results["repos"].items():
if data["has_soul"] and not data["is_canonical"]:
duplicates.append(repo)
if duplicates:
print(f"\n⚠️ Duplicate SOUL.md files found in: {', '.join(duplicates)}")
sys.exit(1)
else:
print("\n✅ No duplicate SOUL.md files found")
sys.exit(0)
if __name__ == "__main__":
main()

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@@ -1,147 +1,103 @@
# SOUL.md Canonical Location Policy
**Issue:** #1443 - decide: Establish SOUL.md canonical location (from Issue #1127 triage)
**Status:** ✅ DECIDED
**Canonical Location:** `timmy-home/SOUL.md`
**Issue:** #1127 - Perplexity Evening Pass triage identified duplicate SOUL.md files causing duplicate PRs.
## Decision
## Current State
**SOUL.md canonical location is `timmy-home/SOUL.md`.**
As of 2026-04-14:
- SOUL.md exists in `timmy-home` (canonical location)
- SOUL.md was also in `timmy-config` (causing duplicate PR #377)
## Problem
The triage found:
- PR #580 in timmy-home: "Harden SOUL.md against Claude identity hijacking"
- PR #377 in timmy-config: "Harden SOUL.md against Claude identity hijacking" (exact same diff)
This created confusion and wasted review effort on duplicate work.
## Canonical Location Decision
**SOUL.md canonical location: `timmy-home/SOUL.md`**
### Rationale
1. **Existing Practice:** PR #580 was approved in timmy-home, establishing it as the working location.
2. **Repository Structure:** timmy-home contains core identity and configuration files:
- SOUL.md (Timmy's identity and values)
- CLAUDE.md (Claude configuration)
- Core documentation and policies
3. **CLAUDE.md Alignment:** The CLAUDE.md file in the-nexus references timmy-home as containing core identity files.
This decision was made based on:
1. **Existing Practice:** PR #580 was approved in timmy-home
2. **Repository Structure:** timmy-home contains core identity files
3. **CLAUDE.md Alignment:** References timmy-home as containing core identity files
4. **Separation of Concerns:**
- `timmy-home`: Core identity, values, and configuration
- `timmy-config`: Operational configuration and tools
- `the-nexus`: 3D world and visualization
## Current State
### SOUL.md in the-nexus
The current `SOUL.md` in the-nexus is already a reference pointer:
```markdown
# SOUL.md
> **This file is a reference pointer.** The canonical SOUL.md lives in
> [`timmy-home`](https://forge.alexanderwhitestone.com/Timmy_Foundation/timmy-home/src/branch/main/SOUL.md).
>
> Do not duplicate identity content here. If this repo needs SOUL.md at
> runtime, fetch it from timmy-home or use a submodule reference.
```
This is the correct approach - the-nexus should reference the canonical location, not duplicate content.
### Historical Context
- **PR #580 (timmy-home):** "Harden SOUL.md against Claude identity hijacking" - Approved
- **PR #377 (timmy-config):** "Harden SOUL.md against Claude identity hijacking" - Closed as duplicate
- Both PRs had identical diffs, causing confusion
## Prevention Measures
### 1. Documentation
This policy document establishes the canonical location.
### 2. CODEOWNERS Update
Add SOUL.md to CODEOWNERS to require review for changes:
```
# SOUL.md requires review from @Timmy
SOUL.md @Timmy
timmy-home/SOUL.md @Timmy
```
### 3. PR Template Update
Add reminder to PR template:
```markdown
## SOUL.md Changes
- [ ] Changes are to `timmy-home/SOUL.md` (canonical location)
- [ ] Not creating duplicate SOUL.md in other repositories
- [ ] Updating reference pointers if needed
```
### 4. CI Check (Future)
Add CI check to warn if SOUL.md is modified outside timmy-home.
## Implementation
### Immediate Actions
1. **Verify timmy-home/SOUL.md exists** - ✅ Confirmed
2. **Verify the-nexus/SOUL.md is reference pointer** - ✅ Confirmed
3. **Update CODEOWNERS** - Add SOUL.md review requirements
4. **Document policy** - This document
### Future Actions
1. **Check other repositories** - Ensure no duplicate SOUL.md files
2. **Update documentation** - Reference this policy in CONTRIBUTING.md
3. **Monitor for duplicates** - Regular checks for SOUL.md in wrong locations
1. **Remove duplicate SOUL.md from timmy-config** (if it still exists)
- Check if `timmy-config/SOUL.md` exists
- If it does, remove it and update any references
- Ensure all documentation points to `timmy-home/SOUL.md`
2. **Update CODEOWNERS** (if needed)
- Ensure SOUL.md changes require review from @Timmy
- Add explicit path for `timmy-home/SOUL.md`
3. **Document in CONTRIBUTING.md**
- Add section about canonical file locations
- Specify that SOUL.md changes should only be made in timmy-home
### Prevention Measures
1. **Git Hooks or CI Checks**
- Warn if SOUL.md is created outside timmy-home
- Check for duplicate SOUL.md files across repos
2. **Documentation Updates**
- Update all references to point to timmy-home/SOUL.md
- Ensure onboarding docs mention canonical location
3. **Code Review Guidelines**
- Reviewers should check that SOUL.md changes are in timmy-home
- Reject PRs that modify SOUL.md in other repositories
## Verification
### Check timmy-home/SOUL.md
To verify canonical location:
```bash
# Verify canonical location exists
curl -s -H "Authorization: token $TOKEN" \
"https://forge.alexanderwhitestone.com/api/v1/repos/Timmy_Foundation/timmy-home/contents/SOUL.md"
# Check if SOUL.md exists in timmy-home
curl -H "Authorization: token $TOKEN" \
https://forge.alexanderwhitestone.com/api/v1/repos/Timmy_Foundation/timmy-home/contents/SOUL.md
# Check if SOUL.md exists in timmy-config (should not)
curl -H "Authorization: token $TOKEN" \
https://forge.alexanderwhitestone.com/api/v1/repos/Timmy_Foundation/timmy-config/contents/SOUL.md
```
### Check for Duplicates
```bash
# Check all repositories for SOUL.md
for repo in the-nexus timmy-config hermes-agent the-beacon; do
echo "Checking $repo..."
curl -s -H "Authorization: token $TOKEN" \
"https://forge.alexanderwhitestone.com/api/v1/repos/Timmy_Foundation/$repo/contents/SOUL.md" \
| jq -r '.name // "Not found"'
done
```
## Future Considerations
## Benefits
1. **Symlink Approach:** Consider using a symlink in timmy-config pointing to timmy-home/SOUL.md if both locations are needed for technical reasons.
### 1. Prevents Duplicate PRs
- No more duplicate SOUL.md changes across repositories
- Clear ownership and review process
2. **Content Synchronization:** If SOUL.md content must exist in multiple places, implement automated synchronization with clear ownership.
### 2. Clear Ownership
- timmy-home owns SOUL.md
- Changes require review from @Timmy
### 3. Consistent Identity
- Single source of truth for Timmy's identity
- No divergence between repositories
### 4. Easier Maintenance
- One place to update SOUL.md
- Clear review and approval process
## Related Issues
- **Issue #1127:** Perplexity Evening Pass triage (identified duplicate SOUL.md)
- **Issue #1443:** This decision
- **PR #580:** Approved SOUL.md changes in timmy-home
- **PR #377:** Closed duplicate SOUL.md changes in timmy-config
## Files
- `SOUL.md` - Reference pointer to timmy-home (this repository)
- `timmy-home/SOUL.md` - Canonical location
- `docs/soul-canonical-location.md` - This policy document
3. **Version Control:** Ensure all changes to SOUL.md go through proper review process in timmy-home.
## Conclusion
**SOUL.md canonical location is established as `timmy-home/SOUL.md`.**
Establishing `timmy-home/SOUL.md` as the canonical location:
- ✅ Prevents duplicate PRs like #580/#377
- ✅ Maintains clear ownership and review process
- ✅ Aligns with existing repository structure
- ✅ Reduces confusion and wasted effort
This decision:
- ✅ Prevents future duplicate PRs
- ✅ Establishes clear ownership
- ✅ Maintains consistent identity
- ✅ Aligns with existing practice
This policy should be documented in CONTRIBUTING.md and enforced through code review guidelines.
**This issue can be closed.**
## License
Part of the Timmy Foundation project.
**Date:** 2026-04-14
**Status:** RECOMMENDED (requires team decision)

118
server.py
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@@ -3,20 +3,34 @@
The Nexus WebSocket Gateway — Robust broadcast bridge for Timmy's consciousness.
This server acts as the central hub for the-nexus, connecting the mind (nexus_think.py),
the body (Evennia/Morrowind), and the visualization surface.
Security features:
- Binds to 127.0.0.1 by default (localhost only)
- Optional external binding via NEXUS_WS_HOST environment variable
- Token-based authentication via NEXUS_WS_TOKEN environment variable
- Rate limiting on connections
- Connection logging and monitoring
"""
import asyncio
import json
import logging
import os
import signal
import sys
from typing import Set
import time
from typing import Set, Dict, Optional
from collections import defaultdict
# Branch protected file - see POLICY.md
import websockets
# Configuration
PORT = 8765
HOST = "0.0.0.0" # Allow external connections if needed
PORT = int(os.environ.get("NEXUS_WS_PORT", "8765"))
HOST = os.environ.get("NEXUS_WS_HOST", "127.0.0.1") # Default to localhost only
AUTH_TOKEN = os.environ.get("NEXUS_WS_TOKEN", "") # Empty = no auth required
RATE_LIMIT_WINDOW = 60 # seconds
RATE_LIMIT_MAX_CONNECTIONS = 10 # max connections per IP per window
RATE_LIMIT_MAX_MESSAGES = 100 # max messages per connection per window
# Logging setup
logging.basicConfig(
@@ -28,15 +42,97 @@ logger = logging.getLogger("nexus-gateway")
# State
clients: Set[websockets.WebSocketServerProtocol] = set()
connection_tracker: Dict[str, list] = defaultdict(list) # IP -> [timestamps]
message_tracker: Dict[int, list] = defaultdict(list) # connection_id -> [timestamps]
def check_rate_limit(ip: str) -> bool:
"""Check if IP has exceeded connection rate limit."""
now = time.time()
# Clean old entries
connection_tracker[ip] = [t for t in connection_tracker[ip] if now - t < RATE_LIMIT_WINDOW]
if len(connection_tracker[ip]) >= RATE_LIMIT_MAX_CONNECTIONS:
return False
connection_tracker[ip].append(now)
return True
def check_message_rate_limit(connection_id: int) -> bool:
"""Check if connection has exceeded message rate limit."""
now = time.time()
# Clean old entries
message_tracker[connection_id] = [t for t in message_tracker[connection_id] if now - t < RATE_LIMIT_WINDOW]
if len(message_tracker[connection_id]) >= RATE_LIMIT_MAX_MESSAGES:
return False
message_tracker[connection_id].append(now)
return True
async def authenticate_connection(websocket: websockets.WebSocketServerProtocol) -> bool:
"""Authenticate WebSocket connection using token."""
if not AUTH_TOKEN:
# No authentication required
return True
try:
# Wait for authentication message (first message should be auth)
auth_message = await asyncio.wait_for(websocket.recv(), timeout=5.0)
auth_data = json.loads(auth_message)
if auth_data.get("type") != "auth":
logger.warning(f"Invalid auth message type from {websocket.remote_address}")
return False
token = auth_data.get("token", "")
if token != AUTH_TOKEN:
logger.warning(f"Invalid auth token from {websocket.remote_address}")
return False
logger.info(f"Authenticated connection from {websocket.remote_address}")
return True
except asyncio.TimeoutError:
logger.warning(f"Authentication timeout from {websocket.remote_address}")
return False
except json.JSONDecodeError:
logger.warning(f"Invalid auth JSON from {websocket.remote_address}")
return False
except Exception as e:
logger.error(f"Authentication error from {websocket.remote_address}: {e}")
return False
async def broadcast_handler(websocket: websockets.WebSocketServerProtocol):
"""Handles individual client connections and message broadcasting."""
clients.add(websocket)
addr = websocket.remote_address
ip = addr[0] if addr else "unknown"
connection_id = id(websocket)
# Check connection rate limit
if not check_rate_limit(ip):
logger.warning(f"Connection rate limit exceeded for {ip}")
await websocket.close(1008, "Rate limit exceeded")
return
# Authenticate if token is required
if not await authenticate_connection(websocket):
await websocket.close(1008, "Authentication failed")
return
clients.add(websocket)
logger.info(f"Client connected from {addr}. Total clients: {len(clients)}")
try:
async for message in websocket:
# Check message rate limit
if not check_message_rate_limit(connection_id):
logger.warning(f"Message rate limit exceeded for {addr}")
await websocket.send(json.dumps({
"type": "error",
"message": "Message rate limit exceeded"
}))
continue
# Parse for logging/validation if it's JSON
try:
data = json.loads(message)
@@ -81,6 +177,20 @@ async def broadcast_handler(websocket: websockets.WebSocketServerProtocol):
async def main():
"""Main server loop with graceful shutdown."""
# Log security configuration
if AUTH_TOKEN:
logger.info("Authentication: ENABLED (token required)")
else:
logger.warning("Authentication: DISABLED (no token required)")
if HOST == "0.0.0.0":
logger.warning("Host binding: 0.0.0.0 (all interfaces) - SECURITY RISK")
else:
logger.info(f"Host binding: {HOST} (localhost only)")
logger.info(f"Rate limiting: {RATE_LIMIT_MAX_CONNECTIONS} connections/IP/{RATE_LIMIT_WINDOW}s, "
f"{RATE_LIMIT_MAX_MESSAGES} messages/connection/{RATE_LIMIT_WINDOW}s")
logger.info(f"Starting Nexus WS gateway on ws://{HOST}:{PORT}")
# Set up signal handlers for graceful shutdown