def scan()

in assets/lambda/code/scan/lambda.py [0:0]

• 40 lines of code
• 5 McCabe index (conditional complexity)

def scan(input_bucket, input_key, download_path, definitions_path, tmp_path):
    """Scans the object from S3"""
    # Max file size support by ClamAV
    try:
        command = [
            "clamscan",
            "-v",
            "--stdout",
            f"--max-filesize={MAX_BYTES}",
            f"--max-scansize={MAX_BYTES}",
            f"--database={definitions_path}",
            "-r",
            f"--tempdir={tmp_path}",
            f"{download_path}",
        ]
        scan_summary = subprocess.run(
            command,
            stderr=subprocess.STDOUT,
            stdout=subprocess.PIPE,
        )
        status = ""
        if scan_summary.returncode == 0:
            status = CLEAN
        elif scan_summary.returncode == 1:
            status = INFECTED
        else:
            raise ClamAVException(
                f"ClamAV exited with unexpected code: {scan_summary.returncode}."
                f"\nOutput: {scan_summary.stdout.decode('utf-8')}"
            )
        set_status(input_bucket, input_key, status)
        return {
            "source": "serverless-clamscan",
            "input_bucket": input_bucket,
            "input_key": input_key,
            "status": status,
            "message": scan_summary.stdout.decode("utf-8"),
        }
    except subprocess.CalledProcessError as e:
        report_failure(input_bucket, input_key, download_path, str(e.stderr))
    except ClamAVException as e:
        report_failure(input_bucket, input_key, download_path, e.message)