Files
guarddog-nexus/guarddog_nexus/scanner.py

102 lines
3.3 KiB
Python

"""GuardDog CLI integration via asyncio subprocess."""
import asyncio
import json
import shutil
from guarddog_nexus.config import config
from guarddog_nexus.logging_setup import log
GUARDDOG_BIN = shutil.which("guarddog") or "guarddog"
async def scan_package(filepath: str, ecosystem: str = "pypi") -> dict:
"""Run guarddog scan on a downloaded package file. Returns normalized dict."""
cmd = [GUARDDOG_BIN, ecosystem, "scan", filepath, "--output-format", "json"]
log.info("Running: %s", " ".join(cmd))
try:
proc = await asyncio.create_subprocess_exec(
*cmd,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
)
stdout, stderr = await asyncio.wait_for(
proc.communicate(), timeout=config.scan_timeout_seconds
)
except asyncio.TimeoutError:
log.error("GuardDog scan timed out for %s", filepath)
return {"findings": [], "errors": ["timeout"]}
except FileNotFoundError:
log.error("GuardDog binary not found at %s", GUARDDOG_BIN)
return {"findings": [], "errors": ["guarddog_not_found"]}
if proc.returncode not in (0, 1):
log.error("GuardDog exited %d: %s", proc.returncode, stderr.decode())
return {"findings": [], "errors": [stderr.decode().strip()]}
try:
data = json.loads(stdout.decode())
except json.JSONDecodeError:
log.error("GuardDog returned invalid JSON for %s", filepath)
return {"findings": [], "errors": ["json_parse_error"]}
return _normalize_output(data)
def _normalize_output(data: dict) -> dict:
"""Normalize guarddog JSON into consistent format.
GuardDog v2 JSON:
{"package": "...", "issues": N, "errors": {}, "results": {"rule": null|{}|str|list}}
Rules mapped as:
- null → not applicable, skip
- {} → active but no findings, skip
- str → metadata finding (description)
- list → semgrep findings [{message, location, code}]
"""
findings = []
results = data.get("results", {})
if isinstance(results, list):
results = {}
for rule_name, value in results.items():
if value is None:
continue
if isinstance(value, str):
findings.append(
{
"rule": rule_name,
"severity": "WARNING",
"message": value,
"location": "",
"code": "",
}
)
elif isinstance(value, list):
for item in value:
if isinstance(item, dict):
findings.append(
{
"rule": rule_name,
"severity": item.get("severity", "WARNING"),
"message": item.get("message", ""),
"location": item.get("location", ""),
"code": item.get("code", ""),
}
)
elif isinstance(value, dict) and not value:
continue
errors = data.get("errors", {})
if isinstance(errors, dict):
errors_list = [f"{k}: {v}" for k, v in errors.items() if v]
else:
errors_list = errors if isinstance(errors, list) else []
return {
"findings": findings,
"errors": errors_list,
}