With multiprocessing fork, threads are not inherited. The parent's
CaptureBus reader thread runs in the parent but module subprocesses
subscribe AFTER fork, so their SubscriberQueue entries are added to
a child-local copy of _subscribers that the parent reader never sees.
Fix: reset and restart CaptureBus in each module subprocess so it
has its own reader thread on the inherited AF_PACKET socket. Each
module gets independent packet delivery. Linux AF_PACKET allows
multiple readers on the same interface.
Three bugs causing all modules to exit within seconds of startup:
1. _module_runner had no keep-alive loop after calling module.start().
All modules use a thread-spawning pattern where start() returns
immediately, so the subprocess exited and killed all daemon threads.
Added while module._running: sleep(1) loop to block until stop().
2. Engine injected capture_bus under key 'capture_bus' but 9 modules
(auth_flow_tracker, cloud_token_harvester, ldap_harvester, network_mapper,
rdp_monitor, quic_analyzer, smb_monitor, db_interceptor, vlan_discovery)
look for '_capture_bus'. Inject both keys so all modules get it.
3. mac_manager crashes on startup when innocuous_macs.db exists but has
no mac_profiles table (DB not yet seeded). Added OperationalError
handler to fall back to random OUI instead of crashing.
- Engine.__init__ now initializes self.capture_bus = None
- Engine.start_all() instantiates CaptureBus before starting modules
- CaptureBus uses resolved interface from config
- Inject capture_bus into configs of all modules with requires_capture_bus=True
- Engine.stop_all() properly stops CaptureBus after stopping modules
- CaptureBus instantiation includes error handling with fallback
- Engine.__init__ now detects actual interface when config has 'auto'
- Uses get_primary_interface() to find default route interface
- PacketCapture module updated to use detected interface with fallback
- Handles Pi Zero 2W (wlan0) and other non-eth0 systems
- Add pi3b tier (700MB RAM limit, 8 passive/2 active modules, no bettercap/mitmproxy)
- Update detect_hardware_tier() to detect Raspberry Pi 3B by model string and BCM2837
- Add pi3b section to hardware_tiers.yaml
- Add systemd MemoryMax/CPUQuota/OOMScoreAdj to all three service files
- Fix bigbrother-watchdog.service ExecStart (was calling non-existent ResourceMonitor().run())
- Add scripts/run_watchdog.py as standalone health monitor daemon
Cobra