anti
41fd496128
Adds the server-side wiring and frontend UI to surface files captured
by the SSH honeypot for a given attacker.
- New repository method get_attacker_artifacts (abstract + SQLModel
impl) that joins the attacker's IP to `file_captured` log rows.
- New route GET /attackers/{uuid}/artifacts.
- New router /artifacts/{decky}/{service}/{stored_as} that streams a
quarantined file back to an authenticated viewer.
- AttackerDetail grows an ArtifactDrawer panel with per-file metadata
(sha256, size, orig_path) and a download action.
- ssh service fragment now sets NODE_NAME=decky_name so logs and the
host-side artifacts bind-mount share the same decky identifier.
85 lines
3.0 KiB
Python
85 lines
3.0 KiB
Python
"""
|
|
Artifact download endpoint.
|
|
|
|
SSH deckies farm attacker file drops into a host-mounted quarantine:
|
|
/var/lib/decnet/artifacts/{decky}/ssh/{stored_as}
|
|
|
|
The capture event already flows through the normal log pipeline (one
|
|
RFC 5424 line per capture, see templates/ssh/emit_capture.py), so metadata
|
|
is served via /logs. This endpoint exists only to retrieve the raw bytes —
|
|
admin-gated because the payloads are attacker-controlled content.
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
import os
|
|
import re
|
|
from pathlib import Path
|
|
|
|
from fastapi import APIRouter, Depends, HTTPException
|
|
from fastapi.responses import FileResponse
|
|
|
|
from decnet.telemetry import traced as _traced
|
|
from decnet.web.dependencies import require_admin
|
|
|
|
router = APIRouter()
|
|
|
|
# Override via env for tests; the prod path matches the bind mount declared in
|
|
# decnet/services/ssh.py.
|
|
ARTIFACTS_ROOT = Path(os.environ.get("DECNET_ARTIFACTS_ROOT", "/var/lib/decnet/artifacts"))
|
|
|
|
# decky names come from the deployer — lowercase alnum plus hyphens.
|
|
_DECKY_RE = re.compile(r"^[a-z0-9][a-z0-9-]{0,62}$")
|
|
|
|
# stored_as is assembled by capture.sh as:
|
|
# ${ts}_${sha:0:12}_${base}
|
|
# where ts is ISO-8601 UTC (e.g. 2026-04-18T02:22:56Z), sha is 12 hex chars,
|
|
# and base is the original filename's basename. Keep the filename charset
|
|
# tight but allow common punctuation dropped files actually use.
|
|
_STORED_AS_RE = re.compile(
|
|
r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z_[a-f0-9]{12}_[A-Za-z0-9._-]{1,255}$"
|
|
)
|
|
|
|
|
|
def _resolve_artifact_path(decky: str, stored_as: str) -> Path:
|
|
"""Validate inputs, resolve the on-disk path, and confirm it stays inside
|
|
the artifacts root. Raises HTTPException(400) on any violation."""
|
|
if not _DECKY_RE.fullmatch(decky):
|
|
raise HTTPException(status_code=400, detail="invalid decky name")
|
|
if not _STORED_AS_RE.fullmatch(stored_as):
|
|
raise HTTPException(status_code=400, detail="invalid stored_as")
|
|
|
|
root = ARTIFACTS_ROOT.resolve()
|
|
candidate = (root / decky / "ssh" / stored_as).resolve()
|
|
# defence-in-depth: even though the regexes reject `..`, make sure a
|
|
# symlink or weird filesystem state can't escape the root.
|
|
if root not in candidate.parents and candidate != root:
|
|
raise HTTPException(status_code=400, detail="path escapes artifacts root")
|
|
return candidate
|
|
|
|
|
|
@router.get(
|
|
"/artifacts/{decky}/{stored_as}",
|
|
tags=["Artifacts"],
|
|
responses={
|
|
400: {"description": "Invalid decky or stored_as parameter"},
|
|
401: {"description": "Could not validate credentials"},
|
|
403: {"description": "Admin access required"},
|
|
404: {"description": "Artifact not found"},
|
|
},
|
|
)
|
|
@_traced("api.get_artifact")
|
|
async def get_artifact(
|
|
decky: str,
|
|
stored_as: str,
|
|
admin: dict = Depends(require_admin),
|
|
) -> FileResponse:
|
|
path = _resolve_artifact_path(decky, stored_as)
|
|
if not path.is_file():
|
|
raise HTTPException(status_code=404, detail="artifact not found")
|
|
return FileResponse(
|
|
path=str(path),
|
|
media_type="application/octet-stream",
|
|
filename=stored_as,
|
|
)
|