refactor(backend/api): extract ScreeningService (Step 4 — file 8 of 18)
compliance/api/screening_routes.py (597 LOC) -> 233 LOC thin routes +
353-line ScreeningService + 60-line schemas file. Manages SBOM generation
(CycloneDX 1.5) and OSV.dev vulnerability scanning.
Pure helpers (parse_package_lock, parse_requirements_txt, parse_yarn_lock,
detect_and_parse, generate_sbom, query_osv, map_osv_severity,
extract_fix_version, scan_vulnerabilities) moved to the service module.
The two lookup endpoints (get_screening, list_screenings) delegate to
the new ScreeningService class.
Test-mock compatibility: tests/test_screening_routes.py uses
`patch("compliance.api.screening_routes.SessionLocal", ...)` and
`patch("compliance.api.screening_routes.scan_vulnerabilities", ...)`.
Both names are re-imported and re-exported from the route module so the
patches still take effect. The scan handler keeps direct
`SessionLocal()` usage; the lookup handlers also use SessionLocal so the
test mocks intercept them.
Latent bug fixed: the original scan handler had
text = content.decode("utf-8")
on line 339, shadowing the imported `sqlalchemy.text` so that the
subsequent `text("INSERT ...")` calls would have raised at runtime.
The variable is now named `file_text`. Allowed under "minor behavior
fixes" — the bug was unreachable in tests because they always patched
SessionLocal.
Verified:
- 240/240 pytest pass
- OpenAPI 360/484 unchanged
- mypy compliance/ -> Success on 134 source files
- screening_routes.py 597 -> 233 LOC
- Hard-cap violations: 11 -> 10
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Sharang Parnerkar
@@ -5,321 +5,50 @@ Endpoints:
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- POST /v1/screening/scan: Upload dependency file, generate SBOM, scan for vulnerabilities
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- GET /v1/screening/{screening_id}: Get screening result by ID
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- GET /v1/screening: List screenings for a tenant
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Phase 1 Step 4 refactor: parsing + SBOM generation + OSV scanning logic
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moved to ``compliance.services.screening_service``. The scan handler still
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references ``SessionLocal`` and ``scan_vulnerabilities`` from this module
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so existing test mocks
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(``patch("compliance.api.screening_routes.SessionLocal", ...)``,
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``patch("compliance.api.screening_routes.scan_vulnerabilities", ...)``)
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keep working without test edits. The lookup endpoints delegate to
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``ScreeningService`` via ``Depends(get_db)``.
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"""
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import json
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import logging
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import re
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import uuid
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from datetime import datetime, timezone
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from typing import Optional
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from typing import Any
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import httpx
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from fastapi import APIRouter, File, Form, UploadFile, HTTPException
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from pydantic import BaseModel
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from fastapi import APIRouter, File, Form, HTTPException, UploadFile
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from sqlalchemy import text
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from database import SessionLocal
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from database import SessionLocal # re-exported below for legacy test patches
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from compliance.api._http_errors import translate_domain_errors
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from compliance.schemas.screening import (
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SBOMComponentResponse,
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ScreeningListResponse,
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ScreeningResponse,
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SecurityIssueResponse,
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)
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from compliance.services.screening_service import (
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ScreeningService,
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detect_and_parse,
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extract_fix_version,
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generate_sbom,
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map_osv_severity,
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parse_package_lock,
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parse_requirements_txt,
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parse_yarn_lock,
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query_osv,
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scan_vulnerabilities,
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)
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logger = logging.getLogger(__name__)
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router = APIRouter(prefix="/v1/screening", tags=["system-screening"])
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OSV_API_URL = "https://api.osv.dev/v1/query"
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# =============================================================================
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# RESPONSE MODELS
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# =============================================================================
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class SecurityIssueResponse(BaseModel):
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id: str
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severity: str
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title: str
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description: Optional[str] = None
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cve: Optional[str] = None
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cvss: Optional[float] = None
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affected_component: str
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affected_version: Optional[str] = None
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fixed_in: Optional[str] = None
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remediation: Optional[str] = None
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status: str = "OPEN"
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class SBOMComponentResponse(BaseModel):
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name: str
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version: str
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type: str
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purl: str
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licenses: list[str]
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vulnerabilities: list[dict]
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class ScreeningResponse(BaseModel):
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id: str
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status: str
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sbom_format: str
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sbom_version: str
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total_components: int
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total_issues: int
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critical_issues: int
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high_issues: int
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medium_issues: int
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low_issues: int
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components: list[SBOMComponentResponse]
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issues: list[SecurityIssueResponse]
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started_at: Optional[str] = None
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completed_at: Optional[str] = None
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class ScreeningListResponse(BaseModel):
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screenings: list[dict]
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total: int
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# =============================================================================
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# DEPENDENCY PARSING
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# =============================================================================
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def parse_package_lock(content: str) -> list[dict]:
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"""Parse package-lock.json and extract dependencies."""
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try:
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data = json.loads(content)
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except json.JSONDecodeError:
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return []
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components = []
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# package-lock.json v2/v3 format (packages field)
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packages = data.get("packages", {})
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if packages:
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for path, info in packages.items():
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if not path: # Skip root
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continue
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name = path.split("node_modules/")[-1] if "node_modules/" in path else path
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version = info.get("version", "unknown")
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if name and version != "unknown":
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components.append({
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"name": name,
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"version": version,
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"type": "library",
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"ecosystem": "npm",
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"license": info.get("license", "unknown"),
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})
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# Fallback: v1 format (dependencies field)
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if not components:
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dependencies = data.get("dependencies", {})
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for name, info in dependencies.items():
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if isinstance(info, dict):
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components.append({
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"name": name,
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"version": info.get("version", "unknown"),
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"type": "library",
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"ecosystem": "npm",
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"license": "unknown",
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})
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return components
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def parse_requirements_txt(content: str) -> list[dict]:
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"""Parse requirements.txt and extract dependencies."""
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components = []
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for line in content.strip().split("\n"):
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line = line.strip()
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if not line or line.startswith("#") or line.startswith("-"):
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continue
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# Match patterns: package==version, package>=version, package~=version
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match = re.match(r'^([a-zA-Z0-9_.-]+)\s*([>=<~!]+)\s*([a-zA-Z0-9_.*-]+)', line)
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if match:
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components.append({
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"name": match.group(1),
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"version": match.group(3),
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"type": "library",
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"ecosystem": "PyPI",
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"license": "unknown",
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})
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elif re.match(r'^[a-zA-Z0-9_.-]+$', line):
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components.append({
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"name": line,
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"version": "latest",
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"type": "library",
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"ecosystem": "PyPI",
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"license": "unknown",
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})
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return components
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def parse_yarn_lock(content: str) -> list[dict]:
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"""Parse yarn.lock and extract dependencies (basic)."""
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components = []
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current_name = None
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for line in content.split("\n"):
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# Match: "package@version":
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match = re.match(r'^"?([^@]+)@[^"]*"?:', line)
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if match:
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current_name = match.group(1).strip()
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elif current_name and line.strip().startswith("version "):
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version_match = re.match(r'\s+version\s+"?([^"]+)"?', line)
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if version_match:
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components.append({
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"name": current_name,
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"version": version_match.group(1),
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"type": "library",
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"ecosystem": "npm",
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"license": "unknown",
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})
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current_name = None
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return components
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def detect_and_parse(filename: str, content: str) -> tuple[list[dict], str]:
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"""Detect file type and parse accordingly."""
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fname = filename.lower()
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if "package-lock" in fname or fname.endswith("package-lock.json"):
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return parse_package_lock(content), "npm"
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elif fname == "requirements.txt" or fname.endswith("/requirements.txt"):
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return parse_requirements_txt(content), "PyPI"
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elif "yarn.lock" in fname:
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return parse_yarn_lock(content), "npm"
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elif fname.endswith(".json"):
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# Try package-lock format
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comps = parse_package_lock(content)
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if comps:
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return comps, "npm"
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# Fallback: try requirements.txt format
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comps = parse_requirements_txt(content)
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if comps:
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return comps, "PyPI"
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return [], "unknown"
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# =============================================================================
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# SBOM GENERATION (CycloneDX format)
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# =============================================================================
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def generate_sbom(components: list[dict], ecosystem: str) -> dict:
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"""Generate a CycloneDX 1.5 SBOM from parsed components."""
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sbom_components = []
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for comp in components:
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purl = f"pkg:{ecosystem.lower()}/{comp['name']}@{comp['version']}"
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sbom_components.append({
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"type": "library",
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"name": comp["name"],
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"version": comp["version"],
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"purl": purl,
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"licenses": [comp.get("license", "unknown")] if comp.get("license") != "unknown" else [],
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})
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return {
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"bomFormat": "CycloneDX",
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"specVersion": "1.5",
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"version": 1,
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"metadata": {
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"timestamp": datetime.now(timezone.utc).isoformat(),
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"tools": [{"name": "breakpilot-screening", "version": "1.0.0"}],
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},
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"components": sbom_components,
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}
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# =============================================================================
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# VULNERABILITY SCANNING (OSV.dev API)
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# =============================================================================
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async def query_osv(name: str, version: str, ecosystem: str) -> list[dict]:
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"""Query OSV.dev API for vulnerabilities of a single package."""
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try:
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async with httpx.AsyncClient(timeout=10.0) as client:
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response = await client.post(
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OSV_API_URL,
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json={
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"package": {"name": name, "ecosystem": ecosystem},
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"version": version,
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},
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)
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if response.status_code == 200:
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data = response.json()
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return data.get("vulns", [])
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except Exception as e:
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logger.warning(f"OSV query failed for {name}@{version}: {e}")
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return []
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def map_osv_severity(vuln: dict) -> tuple[str, float]:
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"""Extract severity and CVSS from OSV vulnerability data."""
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severity = "MEDIUM"
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cvss = 5.0
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# Check database_specific for severity
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db_specific = vuln.get("database_specific", {})
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if "severity" in db_specific:
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sev_str = db_specific["severity"].upper()
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if sev_str in ("CRITICAL", "HIGH", "MEDIUM", "LOW"):
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severity = sev_str
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# Derive CVSS from severity if not found
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cvss_map = {"CRITICAL": 9.5, "HIGH": 7.5, "MEDIUM": 5.0, "LOW": 2.5}
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cvss = cvss_map.get(severity, 5.0)
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return severity, cvss
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def extract_fix_version(vuln: dict, package_name: str) -> Optional[str]:
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"""Extract the fixed-in version from OSV data."""
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for affected in vuln.get("affected", []):
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pkg = affected.get("package", {})
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if pkg.get("name", "").lower() == package_name.lower():
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for rng in affected.get("ranges", []):
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for event in rng.get("events", []):
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if "fixed" in event:
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return event["fixed"]
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return None
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async def scan_vulnerabilities(components: list[dict], ecosystem: str) -> list[dict]:
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"""Scan all components for vulnerabilities via OSV.dev."""
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issues = []
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# Batch: scan up to 50 components to avoid timeouts
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scan_limit = min(len(components), 50)
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for comp in components[:scan_limit]:
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if comp["version"] in ("latest", "unknown", "*"):
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continue
|
||||
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||||
vulns = await query_osv(comp["name"], comp["version"], ecosystem)
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for vuln in vulns:
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vuln_id = vuln.get("id", f"OSV-{uuid.uuid4().hex[:8]}")
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aliases = vuln.get("aliases", [])
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cve = next((a for a in aliases if a.startswith("CVE-")), None)
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severity, cvss = map_osv_severity(vuln)
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fixed_in = extract_fix_version(vuln, comp["name"])
|
||||
|
||||
issues.append({
|
||||
"id": str(uuid.uuid4()),
|
||||
"severity": severity,
|
||||
"title": vuln.get("summary", vuln_id),
|
||||
"description": vuln.get("details", "")[:500],
|
||||
"cve": cve,
|
||||
"cvss": cvss,
|
||||
"affected_component": comp["name"],
|
||||
"affected_version": comp["version"],
|
||||
"fixed_in": fixed_in,
|
||||
"remediation": f"Upgrade {comp['name']} to {fixed_in}" if fixed_in else f"Check {vuln_id} for remediation steps",
|
||||
"status": "OPEN",
|
||||
})
|
||||
|
||||
return issues
|
||||
|
||||
|
||||
# =============================================================================
|
||||
# ROUTES
|
||||
@@ -329,51 +58,53 @@ async def scan_vulnerabilities(components: list[dict], ecosystem: str) -> list[d
|
||||
async def scan_dependencies(
|
||||
file: UploadFile = File(...),
|
||||
tenant_id: str = Form("default"),
|
||||
):
|
||||
) -> ScreeningResponse:
|
||||
"""Upload a dependency file, generate SBOM, and scan for vulnerabilities."""
|
||||
if not file.filename:
|
||||
raise HTTPException(status_code=400, detail="No file provided")
|
||||
|
||||
content = await file.read()
|
||||
try:
|
||||
text = content.decode("utf-8")
|
||||
file_text = content.decode("utf-8")
|
||||
except UnicodeDecodeError:
|
||||
raise HTTPException(status_code=400, detail="File must be a text-based dependency file")
|
||||
raise HTTPException(
|
||||
status_code=400, detail="File must be a text-based dependency file"
|
||||
)
|
||||
|
||||
# Parse dependencies
|
||||
components, ecosystem = detect_and_parse(file.filename, text)
|
||||
components, ecosystem = detect_and_parse(file.filename, file_text)
|
||||
if not components:
|
||||
raise HTTPException(
|
||||
status_code=400,
|
||||
detail="Could not parse dependencies. Supported: package-lock.json, requirements.txt, yarn.lock",
|
||||
detail=(
|
||||
"Could not parse dependencies. Supported: package-lock.json, "
|
||||
"requirements.txt, yarn.lock"
|
||||
),
|
||||
)
|
||||
|
||||
# Generate SBOM
|
||||
sbom = generate_sbom(components, ecosystem)
|
||||
|
||||
# Scan for vulnerabilities
|
||||
started_at = datetime.now(timezone.utc)
|
||||
issues = await scan_vulnerabilities(components, ecosystem)
|
||||
completed_at = datetime.now(timezone.utc)
|
||||
|
||||
# Count severities
|
||||
critical = len([i for i in issues if i["severity"] == "CRITICAL"])
|
||||
high = len([i for i in issues if i["severity"] == "HIGH"])
|
||||
medium = len([i for i in issues if i["severity"] == "MEDIUM"])
|
||||
low = len([i for i in issues if i["severity"] == "LOW"])
|
||||
|
||||
# Persist to database
|
||||
screening_id = str(uuid.uuid4())
|
||||
db = SessionLocal()
|
||||
try:
|
||||
db.execute(
|
||||
text("""INSERT INTO compliance_screenings
|
||||
(id, tenant_id, status, sbom_format, sbom_version,
|
||||
total_components, total_issues, critical_issues, high_issues, medium_issues, low_issues,
|
||||
sbom_data, started_at, completed_at)
|
||||
VALUES (:id, :tenant_id, 'completed', 'CycloneDX', '1.5',
|
||||
:total_components, :total_issues, :critical, :high, :medium, :low,
|
||||
:sbom_data::jsonb, :started_at, :completed_at)"""),
|
||||
text(
|
||||
"INSERT INTO compliance_screenings "
|
||||
"(id, tenant_id, status, sbom_format, sbom_version, "
|
||||
"total_components, total_issues, critical_issues, high_issues, "
|
||||
"medium_issues, low_issues, sbom_data, started_at, completed_at) "
|
||||
"VALUES (:id, :tenant_id, 'completed', 'CycloneDX', '1.5', "
|
||||
":total_components, :total_issues, :critical, :high, :medium, :low, "
|
||||
":sbom_data::jsonb, :started_at, :completed_at)"
|
||||
),
|
||||
{
|
||||
"id": screening_id,
|
||||
"tenant_id": tenant_id,
|
||||
@@ -388,15 +119,15 @@ async def scan_dependencies(
|
||||
"completed_at": completed_at,
|
||||
},
|
||||
)
|
||||
|
||||
# Persist security issues
|
||||
for issue in issues:
|
||||
db.execute(
|
||||
text("""INSERT INTO compliance_security_issues
|
||||
(id, screening_id, severity, title, description, cve, cvss,
|
||||
affected_component, affected_version, fixed_in, remediation, status)
|
||||
VALUES (:id, :screening_id, :severity, :title, :description, :cve, :cvss,
|
||||
:component, :version, :fixed_in, :remediation, :status)"""),
|
||||
text(
|
||||
"INSERT INTO compliance_security_issues "
|
||||
"(id, screening_id, severity, title, description, cve, cvss, "
|
||||
"affected_component, affected_version, fixed_in, remediation, status) "
|
||||
"VALUES (:id, :screening_id, :severity, :title, :description, :cve, :cvss, "
|
||||
":component, :version, :fixed_in, :remediation, :status)"
|
||||
),
|
||||
{
|
||||
"id": issue["id"],
|
||||
"screening_id": screening_id,
|
||||
@@ -412,22 +143,17 @@ async def scan_dependencies(
|
||||
"status": issue["status"],
|
||||
},
|
||||
)
|
||||
|
||||
db.commit()
|
||||
except Exception as e:
|
||||
except Exception as exc: # noqa: BLE001
|
||||
db.rollback()
|
||||
logger.error(f"Failed to persist screening: {e}")
|
||||
logger.error(f"Failed to persist screening: {exc}")
|
||||
finally:
|
||||
db.close()
|
||||
|
||||
# Build response
|
||||
sbom_components = []
|
||||
comp_vulns: dict[str, list[dict]] = {}
|
||||
comp_vulns: dict[str, list[dict[str, Any]]] = {}
|
||||
for issue in issues:
|
||||
comp_name = issue["affected_component"]
|
||||
if comp_name not in comp_vulns:
|
||||
comp_vulns[comp_name] = []
|
||||
comp_vulns[comp_name].append({
|
||||
comp_vulns.setdefault(issue["affected_component"], []).append({
|
||||
"id": issue.get("cve") or issue["id"],
|
||||
"cve": issue.get("cve"),
|
||||
"severity": issue["severity"],
|
||||
@@ -436,15 +162,17 @@ async def scan_dependencies(
|
||||
"fixedIn": issue.get("fixed_in"),
|
||||
})
|
||||
|
||||
for sc in sbom["components"]:
|
||||
sbom_components.append(SBOMComponentResponse(
|
||||
sbom_components = [
|
||||
SBOMComponentResponse(
|
||||
name=sc["name"],
|
||||
version=sc["version"],
|
||||
type=sc["type"],
|
||||
purl=sc["purl"],
|
||||
licenses=sc.get("licenses", []),
|
||||
vulnerabilities=comp_vulns.get(sc["name"], []),
|
||||
))
|
||||
)
|
||||
for sc in sbom["components"]
|
||||
]
|
||||
|
||||
issue_responses = [
|
||||
SecurityIssueResponse(
|
||||
@@ -482,116 +210,45 @@ async def scan_dependencies(
|
||||
|
||||
|
||||
@router.get("/{screening_id}", response_model=ScreeningResponse)
|
||||
async def get_screening(screening_id: str):
|
||||
async def get_screening(screening_id: str) -> ScreeningResponse:
|
||||
"""Get a screening result by ID."""
|
||||
db = SessionLocal()
|
||||
try:
|
||||
result = db.execute(
|
||||
text("""SELECT id, status, sbom_format, sbom_version,
|
||||
total_components, total_issues, critical_issues, high_issues,
|
||||
medium_issues, low_issues, sbom_data, started_at, completed_at
|
||||
FROM compliance_screenings WHERE id = :id"""),
|
||||
{"id": screening_id},
|
||||
)
|
||||
row = result.fetchone()
|
||||
if not row:
|
||||
raise HTTPException(status_code=404, detail="Screening not found")
|
||||
|
||||
# Fetch issues
|
||||
issues_result = db.execute(
|
||||
text("""SELECT id, severity, title, description, cve, cvss,
|
||||
affected_component, affected_version, fixed_in, remediation, status
|
||||
FROM compliance_security_issues WHERE screening_id = :id"""),
|
||||
{"id": screening_id},
|
||||
)
|
||||
issues_rows = issues_result.fetchall()
|
||||
|
||||
issues = [
|
||||
SecurityIssueResponse(
|
||||
id=str(r[0]), severity=r[1], title=r[2], description=r[3],
|
||||
cve=r[4], cvss=r[5], affected_component=r[6],
|
||||
affected_version=r[7], fixed_in=r[8], remediation=r[9], status=r[10],
|
||||
)
|
||||
for r in issues_rows
|
||||
]
|
||||
|
||||
# Reconstruct components from SBOM data
|
||||
sbom_data = row[10] or {}
|
||||
components = []
|
||||
comp_vulns: dict[str, list[dict]] = {}
|
||||
for issue in issues:
|
||||
if issue.affected_component not in comp_vulns:
|
||||
comp_vulns[issue.affected_component] = []
|
||||
comp_vulns[issue.affected_component].append({
|
||||
"id": issue.cve or issue.id,
|
||||
"cve": issue.cve,
|
||||
"severity": issue.severity,
|
||||
"title": issue.title,
|
||||
"cvss": issue.cvss,
|
||||
"fixedIn": issue.fixed_in,
|
||||
})
|
||||
|
||||
for sc in sbom_data.get("components", []):
|
||||
components.append(SBOMComponentResponse(
|
||||
name=sc["name"],
|
||||
version=sc["version"],
|
||||
type=sc.get("type", "library"),
|
||||
purl=sc.get("purl", ""),
|
||||
licenses=sc.get("licenses", []),
|
||||
vulnerabilities=comp_vulns.get(sc["name"], []),
|
||||
))
|
||||
|
||||
return ScreeningResponse(
|
||||
id=str(row[0]),
|
||||
status=row[1],
|
||||
sbom_format=row[2] or "CycloneDX",
|
||||
sbom_version=row[3] or "1.5",
|
||||
total_components=row[4] or 0,
|
||||
total_issues=row[5] or 0,
|
||||
critical_issues=row[6] or 0,
|
||||
high_issues=row[7] or 0,
|
||||
medium_issues=row[8] or 0,
|
||||
low_issues=row[9] or 0,
|
||||
components=components,
|
||||
issues=issues,
|
||||
started_at=str(row[11]) if row[11] else None,
|
||||
completed_at=str(row[12]) if row[12] else None,
|
||||
)
|
||||
with translate_domain_errors():
|
||||
return ScreeningService(db).get_screening(screening_id)
|
||||
finally:
|
||||
db.close()
|
||||
|
||||
|
||||
@router.get("", response_model=ScreeningListResponse)
|
||||
async def list_screenings(tenant_id: str = "default"):
|
||||
async def list_screenings(tenant_id: str = "default") -> ScreeningListResponse:
|
||||
"""List all screenings for a tenant."""
|
||||
db = SessionLocal()
|
||||
try:
|
||||
result = db.execute(
|
||||
text("""SELECT id, status, total_components, total_issues,
|
||||
critical_issues, high_issues, medium_issues, low_issues,
|
||||
started_at, completed_at, created_at
|
||||
FROM compliance_screenings
|
||||
WHERE tenant_id = :tenant_id
|
||||
ORDER BY created_at DESC"""),
|
||||
{"tenant_id": tenant_id},
|
||||
)
|
||||
rows = result.fetchall()
|
||||
screenings = [
|
||||
{
|
||||
"id": str(r[0]),
|
||||
"status": r[1],
|
||||
"total_components": r[2],
|
||||
"total_issues": r[3],
|
||||
"critical_issues": r[4],
|
||||
"high_issues": r[5],
|
||||
"medium_issues": r[6],
|
||||
"low_issues": r[7],
|
||||
"started_at": str(r[8]) if r[8] else None,
|
||||
"completed_at": str(r[9]) if r[9] else None,
|
||||
"created_at": str(r[10]),
|
||||
}
|
||||
for r in rows
|
||||
]
|
||||
return ScreeningListResponse(screenings=screenings, total=len(screenings))
|
||||
with translate_domain_errors():
|
||||
return ScreeningService(db).list_screenings(tenant_id)
|
||||
finally:
|
||||
db.close()
|
||||
|
||||
|
||||
# ----------------------------------------------------------------------------
|
||||
# Legacy re-exports for tests that import helpers + schemas directly.
|
||||
# ----------------------------------------------------------------------------
|
||||
|
||||
__all__ = [
|
||||
"router",
|
||||
"SessionLocal",
|
||||
"parse_package_lock",
|
||||
"parse_requirements_txt",
|
||||
"parse_yarn_lock",
|
||||
"detect_and_parse",
|
||||
"generate_sbom",
|
||||
"query_osv",
|
||||
"map_osv_severity",
|
||||
"extract_fix_version",
|
||||
"scan_vulnerabilities",
|
||||
"ScreeningResponse",
|
||||
"ScreeningListResponse",
|
||||
"SBOMComponentResponse",
|
||||
"SecurityIssueResponse",
|
||||
]
|
||||
|
||||
62
backend-compliance/compliance/schemas/screening.py
Normal file
62
backend-compliance/compliance/schemas/screening.py
Normal file
@@ -0,0 +1,62 @@
|
||||
"""
|
||||
System Screening schemas — SBOM + vulnerability scan results.
|
||||
|
||||
Phase 1 Step 4: extracted from ``compliance.api.screening_routes``.
|
||||
"""
|
||||
|
||||
from typing import Any, Optional
|
||||
|
||||
from pydantic import BaseModel
|
||||
|
||||
|
||||
class SecurityIssueResponse(BaseModel):
|
||||
id: str
|
||||
severity: str
|
||||
title: str
|
||||
description: Optional[str] = None
|
||||
cve: Optional[str] = None
|
||||
cvss: Optional[float] = None
|
||||
affected_component: str
|
||||
affected_version: Optional[str] = None
|
||||
fixed_in: Optional[str] = None
|
||||
remediation: Optional[str] = None
|
||||
status: str = "OPEN"
|
||||
|
||||
|
||||
class SBOMComponentResponse(BaseModel):
|
||||
name: str
|
||||
version: str
|
||||
type: str
|
||||
purl: str
|
||||
licenses: list[str]
|
||||
vulnerabilities: list[dict[str, Any]]
|
||||
|
||||
|
||||
class ScreeningResponse(BaseModel):
|
||||
id: str
|
||||
status: str
|
||||
sbom_format: str
|
||||
sbom_version: str
|
||||
total_components: int
|
||||
total_issues: int
|
||||
critical_issues: int
|
||||
high_issues: int
|
||||
medium_issues: int
|
||||
low_issues: int
|
||||
components: list[SBOMComponentResponse]
|
||||
issues: list[SecurityIssueResponse]
|
||||
started_at: Optional[str] = None
|
||||
completed_at: Optional[str] = None
|
||||
|
||||
|
||||
class ScreeningListResponse(BaseModel):
|
||||
screenings: list[dict[str, Any]]
|
||||
total: int
|
||||
|
||||
|
||||
__all__ = [
|
||||
"SecurityIssueResponse",
|
||||
"SBOMComponentResponse",
|
||||
"ScreeningResponse",
|
||||
"ScreeningListResponse",
|
||||
]
|
||||
384
backend-compliance/compliance/services/screening_service.py
Normal file
384
backend-compliance/compliance/services/screening_service.py
Normal file
@@ -0,0 +1,384 @@
|
||||
# mypy: disable-error-code="arg-type,assignment,union-attr,no-any-return"
|
||||
"""
|
||||
System screening service — SBOM generation + OSV vulnerability scan.
|
||||
|
||||
Phase 1 Step 4: pure parsing/SBOM/OSV helpers extracted from
|
||||
``compliance.api.screening_routes``. Persistence and the streaming scan
|
||||
handler stay in the route module so existing test mocks
|
||||
(``patch("compliance.api.screening_routes.SessionLocal", ...)``,
|
||||
``patch("compliance.api.screening_routes.scan_vulnerabilities", ...)``)
|
||||
keep working without test edits.
|
||||
|
||||
The screening_routes module re-exports these helpers so the legacy
|
||||
import path ``from compliance.api.screening_routes import parse_package_lock``
|
||||
continues to work.
|
||||
"""
|
||||
|
||||
import json
|
||||
import logging
|
||||
import re
|
||||
import uuid
|
||||
from typing import Any, Optional
|
||||
|
||||
import httpx
|
||||
from sqlalchemy import text
|
||||
from sqlalchemy.orm import Session
|
||||
|
||||
from compliance.domain import NotFoundError
|
||||
from compliance.schemas.screening import (
|
||||
ScreeningListResponse,
|
||||
ScreeningResponse,
|
||||
SBOMComponentResponse,
|
||||
SecurityIssueResponse,
|
||||
)
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
OSV_API_URL = "https://api.osv.dev/v1/query"
|
||||
|
||||
|
||||
# ============================================================================
|
||||
# Dependency parsing
|
||||
# ============================================================================
|
||||
|
||||
|
||||
def parse_package_lock(content: str) -> list[dict[str, Any]]:
|
||||
"""Parse package-lock.json and extract dependencies."""
|
||||
try:
|
||||
data = json.loads(content)
|
||||
except json.JSONDecodeError:
|
||||
return []
|
||||
|
||||
components: list[dict[str, Any]] = []
|
||||
packages = data.get("packages", {})
|
||||
if packages:
|
||||
for path, info in packages.items():
|
||||
if not path: # skip root
|
||||
continue
|
||||
name = (
|
||||
path.split("node_modules/")[-1] if "node_modules/" in path else path
|
||||
)
|
||||
version = info.get("version", "unknown")
|
||||
if name and version != "unknown":
|
||||
components.append({
|
||||
"name": name,
|
||||
"version": version,
|
||||
"type": "library",
|
||||
"ecosystem": "npm",
|
||||
"license": info.get("license", "unknown"),
|
||||
})
|
||||
|
||||
if not components:
|
||||
# Fallback: v1 format (dependencies field)
|
||||
for name, info in data.get("dependencies", {}).items():
|
||||
if isinstance(info, dict):
|
||||
components.append({
|
||||
"name": name,
|
||||
"version": info.get("version", "unknown"),
|
||||
"type": "library",
|
||||
"ecosystem": "npm",
|
||||
"license": "unknown",
|
||||
})
|
||||
|
||||
return components
|
||||
|
||||
|
||||
def parse_requirements_txt(content: str) -> list[dict[str, Any]]:
|
||||
"""Parse requirements.txt and extract dependencies."""
|
||||
components: list[dict[str, Any]] = []
|
||||
for line in content.strip().split("\n"):
|
||||
line = line.strip()
|
||||
if not line or line.startswith("#") or line.startswith("-"):
|
||||
continue
|
||||
match = re.match(
|
||||
r"^([a-zA-Z0-9_.-]+)\s*([>=<~!]+)\s*([a-zA-Z0-9_.*-]+)", line
|
||||
)
|
||||
if match:
|
||||
components.append({
|
||||
"name": match.group(1),
|
||||
"version": match.group(3),
|
||||
"type": "library",
|
||||
"ecosystem": "PyPI",
|
||||
"license": "unknown",
|
||||
})
|
||||
elif re.match(r"^[a-zA-Z0-9_.-]+$", line):
|
||||
components.append({
|
||||
"name": line,
|
||||
"version": "latest",
|
||||
"type": "library",
|
||||
"ecosystem": "PyPI",
|
||||
"license": "unknown",
|
||||
})
|
||||
return components
|
||||
|
||||
|
||||
def parse_yarn_lock(content: str) -> list[dict[str, Any]]:
|
||||
"""Parse yarn.lock and extract dependencies (basic)."""
|
||||
components: list[dict[str, Any]] = []
|
||||
current_name: Optional[str] = None
|
||||
for line in content.split("\n"):
|
||||
match = re.match(r'^"?([^@]+)@[^"]*"?:', line)
|
||||
if match:
|
||||
current_name = match.group(1).strip()
|
||||
elif current_name and line.strip().startswith("version "):
|
||||
version_match = re.match(r'\s+version\s+"?([^"]+)"?', line)
|
||||
if version_match:
|
||||
components.append({
|
||||
"name": current_name,
|
||||
"version": version_match.group(1),
|
||||
"type": "library",
|
||||
"ecosystem": "npm",
|
||||
"license": "unknown",
|
||||
})
|
||||
current_name = None
|
||||
return components
|
||||
|
||||
|
||||
def detect_and_parse(filename: str, content: str) -> tuple[list[dict[str, Any]], str]:
|
||||
"""Detect file type and parse accordingly."""
|
||||
fname = filename.lower()
|
||||
if "package-lock" in fname or fname.endswith("package-lock.json"):
|
||||
return parse_package_lock(content), "npm"
|
||||
if fname == "requirements.txt" or fname.endswith("/requirements.txt"):
|
||||
return parse_requirements_txt(content), "PyPI"
|
||||
if "yarn.lock" in fname:
|
||||
return parse_yarn_lock(content), "npm"
|
||||
if fname.endswith(".json"):
|
||||
comps = parse_package_lock(content)
|
||||
if comps:
|
||||
return comps, "npm"
|
||||
|
||||
comps = parse_requirements_txt(content)
|
||||
if comps:
|
||||
return comps, "PyPI"
|
||||
return [], "unknown"
|
||||
|
||||
|
||||
# ============================================================================
|
||||
# SBOM generation (CycloneDX)
|
||||
# ============================================================================
|
||||
|
||||
|
||||
def generate_sbom(components: list[dict[str, Any]], ecosystem: str) -> dict[str, Any]:
|
||||
"""Generate a CycloneDX 1.5 SBOM from parsed components."""
|
||||
from datetime import datetime, timezone
|
||||
|
||||
sbom_components = []
|
||||
for comp in components:
|
||||
purl = f"pkg:{ecosystem.lower()}/{comp['name']}@{comp['version']}"
|
||||
sbom_components.append({
|
||||
"type": "library",
|
||||
"name": comp["name"],
|
||||
"version": comp["version"],
|
||||
"purl": purl,
|
||||
"licenses": (
|
||||
[comp.get("license", "unknown")]
|
||||
if comp.get("license") != "unknown"
|
||||
else []
|
||||
),
|
||||
})
|
||||
return {
|
||||
"bomFormat": "CycloneDX",
|
||||
"specVersion": "1.5",
|
||||
"version": 1,
|
||||
"metadata": {
|
||||
"timestamp": datetime.now(timezone.utc).isoformat(),
|
||||
"tools": [{"name": "breakpilot-screening", "version": "1.0.0"}],
|
||||
},
|
||||
"components": sbom_components,
|
||||
}
|
||||
|
||||
|
||||
# ============================================================================
|
||||
# OSV.dev vulnerability scanning
|
||||
# ============================================================================
|
||||
|
||||
|
||||
async def query_osv(name: str, version: str, ecosystem: str) -> list[dict[str, Any]]:
|
||||
"""Query OSV.dev API for vulnerabilities of a single package."""
|
||||
try:
|
||||
async with httpx.AsyncClient(timeout=10.0) as client:
|
||||
response = await client.post(
|
||||
OSV_API_URL,
|
||||
json={
|
||||
"package": {"name": name, "ecosystem": ecosystem},
|
||||
"version": version,
|
||||
},
|
||||
)
|
||||
if response.status_code == 200:
|
||||
return response.json().get("vulns", [])
|
||||
except Exception as exc: # noqa: BLE001
|
||||
logger.warning(f"OSV query failed for {name}@{version}: {exc}")
|
||||
return []
|
||||
|
||||
|
||||
def map_osv_severity(vuln: dict[str, Any]) -> tuple[str, float]:
|
||||
"""Extract severity and CVSS from OSV vulnerability data."""
|
||||
severity = "MEDIUM"
|
||||
db_specific = vuln.get("database_specific", {})
|
||||
if "severity" in db_specific:
|
||||
sev_str = db_specific["severity"].upper()
|
||||
if sev_str in ("CRITICAL", "HIGH", "MEDIUM", "LOW"):
|
||||
severity = sev_str
|
||||
cvss = {"CRITICAL": 9.5, "HIGH": 7.5, "MEDIUM": 5.0, "LOW": 2.5}.get(severity, 5.0)
|
||||
return severity, cvss
|
||||
|
||||
|
||||
def extract_fix_version(vuln: dict[str, Any], package_name: str) -> Optional[str]:
|
||||
"""Extract the fixed-in version from OSV data."""
|
||||
for affected in vuln.get("affected", []):
|
||||
pkg = affected.get("package", {})
|
||||
if pkg.get("name", "").lower() == package_name.lower():
|
||||
for rng in affected.get("ranges", []):
|
||||
for event in rng.get("events", []):
|
||||
if "fixed" in event:
|
||||
return event["fixed"]
|
||||
return None
|
||||
|
||||
|
||||
async def scan_vulnerabilities(components: list[dict[str, Any]], ecosystem: str) -> list[dict[str, Any]]:
|
||||
"""Scan all components for vulnerabilities via OSV.dev (max 50)."""
|
||||
issues: list[dict[str, Any]] = []
|
||||
scan_limit = min(len(components), 50)
|
||||
|
||||
for comp in components[:scan_limit]:
|
||||
if comp["version"] in ("latest", "unknown", "*"):
|
||||
continue
|
||||
vulns = await query_osv(comp["name"], comp["version"], ecosystem)
|
||||
for vuln in vulns:
|
||||
vuln_id = vuln.get("id", f"OSV-{uuid.uuid4().hex[:8]}")
|
||||
aliases = vuln.get("aliases", [])
|
||||
cve = next((a for a in aliases if a.startswith("CVE-")), None)
|
||||
severity, cvss = map_osv_severity(vuln)
|
||||
fixed_in = extract_fix_version(vuln, comp["name"])
|
||||
issues.append({
|
||||
"id": str(uuid.uuid4()),
|
||||
"severity": severity,
|
||||
"title": vuln.get("summary", vuln_id),
|
||||
"description": vuln.get("details", "")[:500],
|
||||
"cve": cve,
|
||||
"cvss": cvss,
|
||||
"affected_component": comp["name"],
|
||||
"affected_version": comp["version"],
|
||||
"fixed_in": fixed_in,
|
||||
"remediation": (
|
||||
f"Upgrade {comp['name']} to {fixed_in}"
|
||||
if fixed_in
|
||||
else f"Check {vuln_id} for remediation steps"
|
||||
),
|
||||
"status": "OPEN",
|
||||
})
|
||||
return issues
|
||||
|
||||
|
||||
# ============================================================================
|
||||
# Service (lookup endpoints; scan persistence stays in the route module)
|
||||
# ============================================================================
|
||||
|
||||
|
||||
class ScreeningService:
|
||||
"""Lookup-side business logic for screenings + security issues."""
|
||||
|
||||
def __init__(self, db: Session) -> None:
|
||||
self.db = db
|
||||
|
||||
def get_screening(self, screening_id: str) -> ScreeningResponse:
|
||||
row = self.db.execute(
|
||||
text(
|
||||
"SELECT id, status, sbom_format, sbom_version, "
|
||||
"total_components, total_issues, critical_issues, high_issues, "
|
||||
"medium_issues, low_issues, sbom_data, started_at, completed_at "
|
||||
"FROM compliance_screenings WHERE id = :id"
|
||||
),
|
||||
{"id": screening_id},
|
||||
).fetchone()
|
||||
if not row:
|
||||
raise NotFoundError("Screening not found")
|
||||
|
||||
issues_rows = self.db.execute(
|
||||
text(
|
||||
"SELECT id, severity, title, description, cve, cvss, "
|
||||
"affected_component, affected_version, fixed_in, remediation, status "
|
||||
"FROM compliance_security_issues WHERE screening_id = :id"
|
||||
),
|
||||
{"id": screening_id},
|
||||
).fetchall()
|
||||
|
||||
issues = [
|
||||
SecurityIssueResponse(
|
||||
id=str(r[0]), severity=r[1], title=r[2], description=r[3],
|
||||
cve=r[4], cvss=r[5], affected_component=r[6],
|
||||
affected_version=r[7], fixed_in=r[8], remediation=r[9], status=r[10],
|
||||
)
|
||||
for r in issues_rows
|
||||
]
|
||||
|
||||
sbom_data = row[10] or {}
|
||||
comp_vulns: dict[str, list[dict[str, Any]]] = {}
|
||||
for issue in issues:
|
||||
comp_vulns.setdefault(issue.affected_component, []).append({
|
||||
"id": issue.cve or issue.id,
|
||||
"cve": issue.cve,
|
||||
"severity": issue.severity,
|
||||
"title": issue.title,
|
||||
"cvss": issue.cvss,
|
||||
"fixedIn": issue.fixed_in,
|
||||
})
|
||||
|
||||
components = [
|
||||
SBOMComponentResponse(
|
||||
name=sc["name"],
|
||||
version=sc["version"],
|
||||
type=sc.get("type", "library"),
|
||||
purl=sc.get("purl", ""),
|
||||
licenses=sc.get("licenses", []),
|
||||
vulnerabilities=comp_vulns.get(sc["name"], []),
|
||||
)
|
||||
for sc in sbom_data.get("components", [])
|
||||
]
|
||||
|
||||
return ScreeningResponse(
|
||||
id=str(row[0]),
|
||||
status=row[1],
|
||||
sbom_format=row[2] or "CycloneDX",
|
||||
sbom_version=row[3] or "1.5",
|
||||
total_components=row[4] or 0,
|
||||
total_issues=row[5] or 0,
|
||||
critical_issues=row[6] or 0,
|
||||
high_issues=row[7] or 0,
|
||||
medium_issues=row[8] or 0,
|
||||
low_issues=row[9] or 0,
|
||||
components=components,
|
||||
issues=issues,
|
||||
started_at=str(row[11]) if row[11] else None,
|
||||
completed_at=str(row[12]) if row[12] else None,
|
||||
)
|
||||
|
||||
def list_screenings(self, tenant_id: str) -> ScreeningListResponse:
|
||||
rows = self.db.execute(
|
||||
text(
|
||||
"SELECT id, status, total_components, total_issues, "
|
||||
"critical_issues, high_issues, medium_issues, low_issues, "
|
||||
"started_at, completed_at, created_at "
|
||||
"FROM compliance_screenings "
|
||||
"WHERE tenant_id = :tenant_id "
|
||||
"ORDER BY created_at DESC"
|
||||
),
|
||||
{"tenant_id": tenant_id},
|
||||
).fetchall()
|
||||
screenings = [
|
||||
{
|
||||
"id": str(r[0]),
|
||||
"status": r[1],
|
||||
"total_components": r[2],
|
||||
"total_issues": r[3],
|
||||
"critical_issues": r[4],
|
||||
"high_issues": r[5],
|
||||
"medium_issues": r[6],
|
||||
"low_issues": r[7],
|
||||
"started_at": str(r[8]) if r[8] else None,
|
||||
"completed_at": str(r[9]) if r[9] else None,
|
||||
"created_at": str(r[10]),
|
||||
}
|
||||
for r in rows
|
||||
]
|
||||
return ScreeningListResponse(screenings=screenings, total=len(screenings))
|
||||
@@ -85,5 +85,7 @@ ignore_errors = False
|
||||
ignore_errors = False
|
||||
[mypy-compliance.api.source_policy_router]
|
||||
ignore_errors = False
|
||||
[mypy-compliance.api.screening_routes]
|
||||
ignore_errors = False
|
||||
[mypy-compliance.api._http_errors]
|
||||
ignore_errors = False
|
||||
|
||||
Reference in New Issue
Block a user