anti
5a7ff285cd
Replace per-decky sniffer containers with a single host-side sniffer that monitors all traffic on the MACVLAN interface. Runs as a background task in the FastAPI lifespan alongside the collector, fully fault-isolated so failures never crash the API. - Add fleet_singleton flag to BaseService; sniffer marked as singleton - Composer skips fleet_singleton services in compose generation - Fleet builder excludes singletons from random service assignment - Extract TLS fingerprinting engine from templates/sniffer/server.py into decnet/sniffer/ package (parameterized for fleet-wide use) - Sniffer worker maps packets to deckies via IP→name state mapping - Original templates/sniffer/server.py preserved for future use
42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
from pathlib import Path
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from decnet.services.base import BaseService
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TEMPLATES_DIR = Path(__file__).parent.parent.parent / "templates" / "sniffer"
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class SnifferService(BaseService):
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"""
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Passive network sniffer deployed alongside deckies on the MACVLAN.
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Captures TLS handshakes in promiscuous mode and extracts JA3/JA3S hashes
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plus connection metadata. Requires NET_RAW + NET_ADMIN capabilities.
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No inbound ports — purely passive.
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"""
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name = "sniffer"
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ports: list[int] = []
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default_image = "build"
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fleet_singleton = True
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def compose_fragment(
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self,
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decky_name: str,
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log_target: str | None = None,
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service_cfg: dict | None = None,
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) -> dict:
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fragment: dict = {
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"build": {"context": str(TEMPLATES_DIR)},
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"container_name": f"{decky_name}-sniffer",
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"restart": "unless-stopped",
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"cap_add": ["NET_RAW", "NET_ADMIN"],
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"environment": {
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"NODE_NAME": decky_name,
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},
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}
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if log_target:
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fragment["environment"]["LOG_TARGET"] = log_target
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return fragment
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def dockerfile_context(self) -> Path | None:
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return TEMPLATES_DIR
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