roof
4ba79fd614
cell-api has no route to remote WG tunnel IPs — only cell-wireguard does. Fix _push_permissions_to_remote() to use 'docker exec cell-wireguard curl' so outbound sync HTTP traverses the WG tunnel from the right namespace. On the receive side, add ensure_cell_api_dnat() which installs three iptables rules inside cell-wireguard on startup: - PREROUTING DNAT: wg0:3000 → cell-api:3000 (Docker bridge IP) - POSTROUTING MASQUERADE: so cell-api's reply routes back via wg0 - FORWARD ACCEPT: allow the wg0→eth0 forwarded traffic Called from _apply_startup_enforcement() so rules survive container restarts. Tests updated to mock subprocess.run instead of urllib.request.urlopen. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
594 lines
23 KiB
Python
594 lines
23 KiB
Python
#!/usr/bin/env python3
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"""
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Personal Internet Cell API Server
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Provides REST API endpoints for managing:
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- Cell status and configuration
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- Network services (DNS, DHCP, NTP)
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- WireGuard VPN and peer management
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- Email, Calendar, and File services
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- Routing and VPN gateway
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- Vault and trust management (Phase 6)
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"""
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import os
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import io
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import json
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import stat
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import zipfile
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import shutil
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import logging
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import secrets
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from datetime import datetime
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from flask import Flask, request, jsonify, current_app, send_file, session
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from flask_cors import CORS
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import threading
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import time
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from collections import deque
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import json as pyjson
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from logging.handlers import RotatingFileHandler
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import uuid
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import contextvars
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# Track API start time for uptime calculation
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API_START_TIME = time.time()
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# Manager singletons — all instantiated in managers.py; imported here so routes can
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# reference them by module-level name and test patches (`patch('app.X', mock)`) work.
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from managers import (
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config_manager, service_bus, log_manager,
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network_manager, wireguard_manager, peer_registry,
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email_manager, calendar_manager, file_manager,
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routing_manager, vault_manager, container_manager,
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cell_link_manager, auth_manager,
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firewall_manager, EventType,
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)
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# Re-exports: tests do `from app import CellManager` and `from app import _resolve_peer_dns`
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from cell_manager import CellManager
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from wireguard_manager import _resolve_peer_dns
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from port_registry import PORT_FIELDS, detect_conflicts
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import auth_routes
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# Context variable for request info
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request_context = contextvars.ContextVar('request_context', default={})
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# Set default log level and log file if not already defined
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LOG_LEVEL = globals().get('LOG_LEVEL', 'INFO')
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LOG_FILE = globals().get('LOG_FILE', 'picell.log')
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class ContextFilter(logging.Filter):
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def filter(self, record):
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ctx = request_context.get({})
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for k, v in ctx.items():
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setattr(record, k, v)
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return True
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class JsonFormatter(logging.Formatter):
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def format(self, record):
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log_record = {
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'timestamp': self.formatTime(record, self.datefmt),
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'level': record.levelname,
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'name': record.name,
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'message': record.getMessage(),
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'request_id': getattr(record, 'request_id', None),
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'client_ip': getattr(record, 'client_ip', None),
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'method': getattr(record, 'method', None),
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'path': getattr(record, 'path', None),
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'status': getattr(record, 'status', None),
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'user': getattr(record, 'user', None),
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}
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if record.exc_info:
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log_record['exception'] = self.formatException(record.exc_info)
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return pyjson.dumps({k: v for k, v in log_record.items() if v is not None})
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json_formatter = JsonFormatter()
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context_filter = ContextFilter()
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handlers = [logging.StreamHandler()]
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try:
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file_handler = RotatingFileHandler(LOG_FILE, maxBytes=5_000_000, backupCount=5, encoding='utf-8')
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file_handler.setLevel(getattr(logging, LOG_LEVEL, logging.INFO))
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file_handler.setFormatter(json_formatter)
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file_handler.addFilter(context_filter)
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handlers.append(file_handler)
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except Exception as e:
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print(f"Warning: Could not create rotating log file handler: {e}")
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for h in handlers:
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h.setFormatter(json_formatter)
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h.addFilter(context_filter)
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logging.basicConfig(
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level=getattr(logging, LOG_LEVEL, logging.INFO),
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handlers=handlers
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)
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logger = logging.getLogger('picell')
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# Flask app setup
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app = Flask(__name__)
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CORS(app,
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supports_credentials=True,
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origins=['http://localhost', 'http://localhost:5173', 'http://localhost:8081',
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'http://127.0.0.1', 'http://127.0.0.1:5173', 'http://127.0.0.1:8081'])
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# Development mode flag
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app.config['DEVELOPMENT_MODE'] = True # Set to True for development, False for production
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# Persist SECRET_KEY so sessions survive API restarts
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SECRET_KEY_FILE = os.path.join(os.environ.get('DATA_DIR', '/app/data'), '.flask_secret_key')
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if os.environ.get('SECRET_KEY'):
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_flask_secret = os.environ['SECRET_KEY'].encode() if isinstance(os.environ['SECRET_KEY'], str) else os.environ['SECRET_KEY']
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elif os.path.exists(SECRET_KEY_FILE) and os.path.getsize(SECRET_KEY_FILE) > 0:
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with open(SECRET_KEY_FILE, 'rb') as _skf:
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_flask_secret = _skf.read()
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else:
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_flask_secret = os.urandom(32)
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try:
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os.makedirs(os.path.dirname(SECRET_KEY_FILE), exist_ok=True)
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_skf_fd = os.open(SECRET_KEY_FILE, os.O_WRONLY | os.O_CREAT | os.O_TRUNC, 0o600)
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with os.fdopen(_skf_fd, 'wb') as _skf:
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_skf.write(_flask_secret)
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except OSError as _e:
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logger.warning(f"Could not persist SECRET_KEY to disk: {_e}")
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app.config['SECRET_KEY'] = _flask_secret
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app.config['SESSION_COOKIE_HTTPONLY'] = True
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app.config['SESSION_COOKIE_SAMESITE'] = 'Lax'
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# config_manager, service_bus, log_manager and all other managers are imported
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# from managers.py above — no re-instantiation needed here.
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@app.before_request
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def enrich_log_context():
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req_id = str(uuid.uuid4())
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client_ip = request.remote_addr
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method = request.method
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path = request.path
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user = getattr(getattr(request, 'user', None), 'id', None) or 'anonymous'
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request_context.set({
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'request_id': req_id,
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'client_ip': client_ip,
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'method': method,
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'path': path,
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'user': user
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})
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@app.before_request
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def enforce_auth():
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"""Enforce session-based authentication and role-based access control.
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Rules:
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- /api/auth/* is always public (login, logout, me, change-password)
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- Non-/api/ paths (e.g. /health) are always public
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- /api/peer/* is accessible to peer role only (admin gets 403)
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- All other /api/* routes require admin role
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Enforcement is active when auth_manager is a real AuthManager instance
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with at least one registered user. Tests that do not seed the auth
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store will see an empty user list and bypass enforcement, preserving
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backward-compatibility with pre-auth test suites.
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"""
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path = request.path
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# Always allow non-API paths and auth namespace
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if not path.startswith('/api/') or path.startswith('/api/auth/'):
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return None
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# Only enforce when auth_manager has been properly initialised and seeded.
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# When the user store is empty (file missing or unreadable — typical in
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# unit tests and fresh installs), bypass enforcement so pre-auth test
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# suites continue to work. 503 is only returned when the users file
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# exists and is readable but contains no accounts (explicit misconfiguration).
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try:
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from auth_manager import AuthManager as _AuthManager
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if not isinstance(auth_manager, _AuthManager):
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return None
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users = auth_manager.list_users()
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if not users:
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# Only fail closed when the auth file is readable but empty —
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# that's an explicit misconfiguration. If the file is missing or
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# unreadable (test env, wrong host path, permission denied), bypass
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# so pre-auth test suites continue to work.
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users_file = getattr(auth_manager, '_users_file', None)
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if users_file:
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try:
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with open(users_file, 'r') as _f:
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_f.read(1)
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return jsonify({'error': 'Authentication not configured. Set admin password first.'}), 503
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except (PermissionError, FileNotFoundError, OSError):
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return None
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return None
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except Exception:
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return None
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username = session.get('username')
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if not username:
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return jsonify({'error': 'Not authenticated'}), 401
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role = session.get('role')
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if path.startswith('/api/peer/'):
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if role != 'peer':
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return jsonify({'error': 'Forbidden'}), 403
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else:
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if role != 'admin':
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return jsonify({'error': 'Forbidden'}), 403
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return None
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@app.before_request
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def check_csrf():
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"""Double-submit CSRF protection for state-changing API requests.
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Applies to POST/PUT/DELETE/PATCH on /api/* paths, excluding /api/auth/*.
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Skipped entirely when app.config['TESTING'] is True so unit tests remain
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unaffected without needing to set CSRF headers.
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"""
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if app.config.get('TESTING'):
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return None
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if request.method not in ('POST', 'PUT', 'DELETE', 'PATCH'):
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return None
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path = request.path
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if not path.startswith('/api/') or path.startswith('/api/auth/'):
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return None
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token_session = session.get('csrf_token')
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if not token_session:
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# Session predates CSRF tokens (existing login) — issue a token now so
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# the next request can carry it. Don't block this request; the client
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# couldn't have known the token yet.
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session['csrf_token'] = secrets.token_hex(32)
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return None
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token_header = request.headers.get('X-CSRF-Token')
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if not token_header or token_header != token_session:
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return jsonify({'error': 'CSRF token missing or invalid'}), 403
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return None
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@app.after_request
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def log_request(response):
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ctx = request_context.get({})
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ctx['status'] = response.status_code
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logger.info(f"{ctx.get('method')} {ctx.get('path')} {ctx.get('status')}")
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return response
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@app.teardown_request
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def clear_log_context(exc):
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request_context.set({})
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# Wire vault_manager into Flask app context (vault routes use current_app.vault_manager)
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app.vault_manager = vault_manager
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auth_routes.auth_manager = auth_manager
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# Apply firewall + DNS rules from stored peer settings (survives API restarts)
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def _configured_domain() -> str:
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return config_manager.configs.get('_identity', {}).get('domain', 'cell')
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def _apply_startup_enforcement():
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try:
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peers = peer_registry.list_peers()
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cell_links = cell_link_manager.list_connections()
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firewall_manager.apply_all_peer_rules(peers)
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firewall_manager.apply_all_cell_rules(cell_links)
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firewall_manager.ensure_cell_api_dnat()
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firewall_manager.apply_all_dns_rules(peers, COREFILE_PATH, _configured_domain(),
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cell_links=cell_links)
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logger.info(f"Applied enforcement rules for {len(peers)} peers, {len(cell_links)} cells on startup")
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sync_summary = cell_link_manager.replay_pending_pushes()
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if sync_summary.get('attempted'):
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logger.info(f"Startup permission sync: {sync_summary}")
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except Exception as e:
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logger.warning(f"Startup enforcement failed (non-fatal): {e}")
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def _bootstrap_dns():
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try:
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identity = config_manager.configs.get('_identity', {})
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cell_name = identity.get('cell_name', os.environ.get('CELL_NAME', 'mycell'))
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domain = identity.get('domain', os.environ.get('CELL_DOMAIN', 'cell'))
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ip_range = identity.get('ip_range', os.environ.get('CELL_IP_RANGE', '172.20.0.0/16'))
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network_manager.bootstrap_dns_records(cell_name, domain, ip_range)
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except Exception as e:
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logger.warning(f"DNS bootstrap failed (non-fatal): {e}")
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COREFILE_PATH = '/app/config/dns/Corefile'
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def _recover_pending_apply():
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"""If the previous all-services apply was interrupted (helper died mid-run),
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clear the 'applying' flag so the UI shows the changes as still pending (not stuck
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in an 'applying' spinner) and the user can retry."""
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try:
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pending = config_manager.configs.get('_pending_restart', {})
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if pending.get('applying') and pending.get('needs_restart'):
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config_manager.configs['_pending_restart']['applying'] = False
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config_manager._save_all_configs()
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logger.warning("Previous config apply did not complete — pending changes restored for retry")
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except Exception as e:
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logger.warning(f"Pending apply recovery check failed: {e}")
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_recover_pending_apply()
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def _sync_wg_keys():
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try:
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wireguard_manager._sync_keys_from_conf()
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except Exception as e:
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logger.warning(f"WireGuard key sync failed (non-fatal): {e}")
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# Run in background so startup isn't blocked waiting on docker exec
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threading.Thread(target=_sync_wg_keys, daemon=True).start()
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threading.Thread(target=_apply_startup_enforcement, daemon=True).start()
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threading.Thread(target=_bootstrap_dns, daemon=True).start()
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# Register services with service bus
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service_bus.register_service('network', network_manager)
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service_bus.register_service('wireguard', wireguard_manager)
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service_bus.register_service('email', email_manager)
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service_bus.register_service('calendar', calendar_manager)
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service_bus.register_service('files', file_manager)
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service_bus.register_service('routing', routing_manager)
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service_bus.register_service('vault', app.vault_manager)
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service_bus.register_service('container', container_manager)
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# Register auth blueprint
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app.register_blueprint(auth_routes.auth_bp)
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# Register service blueprints (routes extracted from this file)
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from routes.email import bp as _email_bp
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from routes.calendar import bp as _calendar_bp
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from routes.files import bp as _files_bp
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from routes.network import bp as _network_bp
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from routes.wireguard import bp as _wireguard_bp
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from routes.cells import bp as _cells_bp
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from routes.peers import bp as _peers_bp
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from routes.routing import bp as _routing_bp
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from routes.vault import bp as _vault_bp
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from routes.containers import bp as _containers_bp
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from routes.services import bp as _services_bp
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from routes.peer_dashboard import bp as _peer_dashboard_bp
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from routes.config import bp as _config_bp
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app.register_blueprint(_email_bp)
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app.register_blueprint(_calendar_bp)
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app.register_blueprint(_files_bp)
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app.register_blueprint(_network_bp)
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app.register_blueprint(_wireguard_bp)
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app.register_blueprint(_cells_bp)
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app.register_blueprint(_peers_bp)
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app.register_blueprint(_routing_bp)
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app.register_blueprint(_vault_bp)
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app.register_blueprint(_containers_bp)
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app.register_blueprint(_services_bp)
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app.register_blueprint(_peer_dashboard_bp)
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app.register_blueprint(_config_bp)
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# Re-export config helpers so existing test imports/patches keep working
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from routes.config import (
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_set_pending_restart, _clear_pending_restart,
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_collect_service_ports, _dedup_changes,
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)
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# Unified health monitoring
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HEALTH_HISTORY_SIZE = 100
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health_history = deque(maxlen=HEALTH_HISTORY_SIZE)
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health_monitor_running = True
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# Health alerting configuration
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HEALTH_ALERT_THRESHOLD = 3 # Number of consecutive failures before alert
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service_alert_counters = {}
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def perform_health_check():
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"""Perform a unified health check of all services, with alerting."""
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try:
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# Use service bus to get health from all services
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result = {
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'timestamp': datetime.utcnow().isoformat(),
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'alerts': []
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}
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# Get health from each service
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for service_name in service_bus.list_services():
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try:
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service = service_bus.get_service(service_name)
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if hasattr(service, 'health_check'):
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health = service.health_check()
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else:
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health = service.get_status()
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result[service_name] = health
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except Exception as e:
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result[service_name] = {'error': str(e), 'status': 'offline'}
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# Health alerting logic — alert only when a service container is not running
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global service_alert_counters
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for service_name in service_bus.list_services():
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if service_name in result:
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status = result[service_name]
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healthy = True
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if isinstance(status, dict):
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# Prefer status.running (container actually up) over healthy (connectivity tests)
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inner = status.get('status', {})
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if isinstance(inner, dict):
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if 'running' in inner:
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healthy = inner['running']
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elif 'status' in inner:
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healthy = str(inner['status']).lower() in ('ok', 'healthy', 'online', 'active')
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elif 'running' in status:
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healthy = status['running']
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elif 'error' in status:
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healthy = False
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else:
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healthy = bool(status)
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# Only count as unhealthy if we're certain it's down
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if not healthy:
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service_alert_counters[service_name] = service_alert_counters.get(service_name, 0) + 1
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if service_alert_counters[service_name] >= HEALTH_ALERT_THRESHOLD:
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alert_msg = f"ALERT: {service_name} unhealthy for {service_alert_counters[service_name]} consecutive checks."
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logger.warning(alert_msg)
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result['alerts'].append(alert_msg)
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# Publish alert event
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service_bus.publish_event(EventType.ERROR_OCCURRED, service_name, {
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'error': alert_msg,
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'service': service_name,
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'consecutive_failures': service_alert_counters[service_name]
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})
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else:
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# Reset counter if service is healthy
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if service_alert_counters.get(service_name, 0) > 0:
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logger.info(f"Service {service_name} recovered, resetting alert counter")
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service_alert_counters[service_name] = 0
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logger.info(f"Unified health check: {result}")
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return result
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except Exception as e:
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logger.error(f"Unified health check failed: {e}")
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return {'error': str(e), 'timestamp': datetime.utcnow().isoformat()}
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def health_monitor_loop():
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while health_monitor_running:
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with app.app_context():
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health_result = perform_health_check()
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health_history.appendleft(health_result)
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# Publish health check event
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|
service_bus.publish_event(EventType.HEALTH_CHECK, 'api', health_result)
|
|
time.sleep(60) # Check every 60 seconds
|
|
|
|
# Start health monitor thread
|
|
health_monitor_thread = threading.Thread(target=health_monitor_loop, daemon=True)
|
|
health_monitor_thread.start()
|
|
|
|
def _local_subnets():
|
|
"""Return all subnets the container is directly connected to (from routing table)."""
|
|
import ipaddress as _ipa, socket as _sock, struct as _struct
|
|
nets = []
|
|
try:
|
|
with open('/proc/net/route') as _f:
|
|
for _line in _f.readlines()[1:]:
|
|
_parts = _line.strip().split()
|
|
if len(_parts) < 8 or _parts[0] == 'lo':
|
|
continue
|
|
_dest = _sock.inet_ntoa(_struct.pack('<I', int(_parts[1], 16)))
|
|
_mask = _sock.inet_ntoa(_struct.pack('<I', int(_parts[7], 16)))
|
|
if _dest == '0.0.0.0':
|
|
continue
|
|
nets.append(_ipa.ip_network(f'{_dest}/{_mask}', strict=False))
|
|
except Exception:
|
|
pass
|
|
return nets
|
|
|
|
|
|
def is_local_request():
|
|
# Trust the direct TCP peer (request.remote_addr) first — it is always
|
|
# the container or process making the connection and cannot be spoofed.
|
|
# In production Flask is behind Caddy inside Docker, so remote_addr is
|
|
# always Caddy's Docker IP (RFC-1918) and this check is sufficient.
|
|
#
|
|
# Additionally, when a trusted reverse-proxy (Caddy) is in the path, it
|
|
# appends the real client IP as the LAST entry of X-Forwarded-For.
|
|
# Trusting only the LAST XFF entry (not the first, which a client could
|
|
# set to anything) is safe: a spoofed first entry such as
|
|
# "XFF: 127.0.0.1, <real-ip>" still passes because the last entry is the
|
|
# real IP appended by Caddy. An attacker directly hitting Flask on :3000
|
|
# could craft any XFF they like, but in the Docker topology port 3000 is
|
|
# not exposed to the internet.
|
|
remote_addr = request.remote_addr
|
|
|
|
def _allowed(addr):
|
|
if not addr:
|
|
return False
|
|
if addr in ('127.0.0.1', '::1', 'localhost'):
|
|
return True
|
|
try:
|
|
import ipaddress as _ipa
|
|
ip = _ipa.ip_address(addr.strip())
|
|
if ip.is_loopback:
|
|
return True
|
|
# Only trust loopback and Docker bridge (172.16.0.0/12).
|
|
# Deliberately excludes 10.0.0.0/8 (WireGuard peer subnet) and
|
|
# 192.168.0.0/16 (LAN) — VPN peers must not access local-only endpoints.
|
|
if ip in _ipa.ip_network('172.16.0.0/12'):
|
|
return True
|
|
# Any subnet the container is directly attached to (handles non-RFC-1918
|
|
# Docker bridge networks such as 172.0.0.0/24).
|
|
for _net in _local_subnets():
|
|
if ip in _net:
|
|
return True
|
|
except Exception:
|
|
pass
|
|
return False
|
|
|
|
if _allowed(remote_addr):
|
|
return True
|
|
|
|
# Check the last X-Forwarded-For entry (appended by the trusted proxy).
|
|
# Never trust any entry other than the last one.
|
|
try:
|
|
xff = request.headers.get('X-Forwarded-For', '')
|
|
if xff:
|
|
last_ip = xff.split(',')[-1].strip()
|
|
if last_ip and _allowed(last_ip):
|
|
return True
|
|
except Exception:
|
|
pass
|
|
|
|
return False
|
|
|
|
@app.route('/health', methods=['GET'])
|
|
def health_check():
|
|
"""Health check endpoint."""
|
|
try:
|
|
return jsonify({
|
|
"status": "healthy",
|
|
"timestamp": datetime.utcnow().isoformat(),
|
|
"version": "1.0.0"
|
|
})
|
|
except Exception as e:
|
|
logger.error(f"Health check failed: {e}")
|
|
return jsonify({"error": str(e)}), 500
|
|
|
|
@app.route('/api/status', methods=['GET'])
|
|
def get_cell_status():
|
|
"""Get overall cell status."""
|
|
try:
|
|
# Use service bus to get status from all services
|
|
services_status = {}
|
|
for service_name in service_bus.list_services():
|
|
try:
|
|
service = service_bus.get_service(service_name)
|
|
services_status[service_name] = service.get_status()
|
|
except Exception as e:
|
|
services_status[service_name] = {'error': str(e)}
|
|
|
|
peers = peer_registry.list_peers()
|
|
|
|
# Calculate actual uptime
|
|
current_time = time.time()
|
|
uptime_seconds = int(current_time - API_START_TIME)
|
|
|
|
identity = config_manager.configs.get('_identity', {})
|
|
return jsonify({
|
|
"cell_name": identity.get('cell_name', os.environ.get('CELL_NAME', 'mycell')),
|
|
"domain": identity.get('domain', os.environ.get('CELL_DOMAIN', 'cell')),
|
|
"uptime": uptime_seconds,
|
|
"peers_count": len(peers),
|
|
"services": services_status,
|
|
"timestamp": datetime.utcnow().isoformat()
|
|
})
|
|
except Exception as e:
|
|
logger.error(f"Error getting cell status: {e}")
|
|
return jsonify({"error": str(e)}), 500
|
|
|
|
@app.route('/api/health/history', methods=['GET'])
|
|
def get_health_history():
|
|
"""Get recent unified health check results."""
|
|
return jsonify(list(health_history))
|
|
|
|
@app.route('/api/health/history/clear', methods=['POST'])
|
|
def clear_health_history():
|
|
"""Clear health history and reset alert counters."""
|
|
global service_alert_counters
|
|
health_history.clear()
|
|
service_alert_counters = {}
|
|
return jsonify({'message': 'Health history cleared'})
|
|
|
|
if __name__ == '__main__':
|
|
debug = os.environ.get('FLASK_DEBUG', '0') == '1'
|
|
app.run(host='0.0.0.0', port=3000, debug=debug) |