406 lines
No EOL
19 KiB
Python
406 lines
No EOL
19 KiB
Python
from scapy.config import conf
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from mac_vendor_lookup import MacLookup
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from typing import List, Optional, Tuple, Dict
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import socket
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import logging
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import netifaces
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import ipaddress
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from concurrent.futures import ThreadPoolExecutor
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import time
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from functools import lru_cache
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import json
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from pathlib import Path
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from datetime import datetime, timedelta
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import subprocess
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from scapy.layers.l2 import ARP, Ether
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from scapy.sendrecv import srp
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from utils.i18n import get_translations
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from babel.support import Translations
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from fastapi import Depends
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from models.subnet import SubnetScanResult, Device
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logging.basicConfig(
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level=logging.INFO,
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format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
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)
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logger = logging.getLogger(__name__)
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class NetworkScanner:
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"""Класс для сканирования подсети с использованием ARP-запросов."""
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def __init__(self, interface: str, translations: Translations = Depends(get_translations())):
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self.interface = interface
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conf.iface = interface
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self.translations = translations
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def scan(self, subnet: str) -> List[Tuple[str, str]]:
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try:
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arp = ARP(pdst=subnet)
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ether = Ether(dst="ff:ff:ff:ff:ff:ff")
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packet = ether / arp
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result = srp(packet, timeout=2, verbose=False, iface=self.interface)[0]
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return [(received.psrc, received.hwsrc) for sent, received in result]
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except Exception as e:
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logger.error(f"Error scanning subnet {subnet}: {str(e)}")
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return []
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class PortScanner:
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"""Класс для сканирования открытых портов на устройствах."""
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def __init__(self, interface: str, translations: Translations = Depends(get_translations())):
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self.interface = interface
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self.translations = translations
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def scan(self, ip: str) -> List[str]:
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return []
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class DeviceInfoCollector:
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"""Класс для сбора информации об устройствах, включая вендоров и хостнеймы."""
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def __init__(self, translations: Translations = Depends(get_translations())):
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self.mac_lookup = MacLookup()
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self.nbtscan_cache = {}
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self.nbtscan_results = {}
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self.translations = translations
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@lru_cache(maxsize=1000)
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def get_vendor(self, mac: str) -> str:
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try:
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return self.mac_lookup.lookup(mac)
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except Exception as e:
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logger.warning(f"Failed to determine vendor for MAC {mac}: {str(e)}")
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return self.translations.gettext("Неизвестный")
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def scan_nbtscan(self, subnet: str) -> None:
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if subnet not in self.nbtscan_results:
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try:
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logger.debug(f"Starting nbtscan for subnet {subnet}")
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result = subprocess.run(["sudo", "nbtscan", "-r", str(subnet)],
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capture_output=True,
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text=True,
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check=False,
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timeout=10)
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logger.debug(f"Full nbtscan output: {result.stdout}")
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if result.returncode == 0:
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for line in result.stdout.splitlines():
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logger.debug(f"Processing line: {line}")
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if not line.startswith(("IP address", "-", "Doing NBT")):
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parts = [p for p in line.split() if p]
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if len(parts) >= 2:
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ip_addr, hostname = parts[0], parts[1]
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if hostname != "<unknown>":
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self.nbtscan_cache[ip_addr] = hostname
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logger.info(f"NetBIOS: Found hostname {hostname} for IP {ip_addr}")
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self.nbtscan_results[subnet] = True
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except subprocess.TimeoutExpired:
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logger.error(f"NetBIOS: Timeout for subnet {subnet}")
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except Exception as e:
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logger.error(f"NetBIOS: Error for subnet {subnet}: {str(e)}")
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def get_hostname(self, ip: str) -> Optional[str]:
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try:
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socket.setdefaulttimeout(2)
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return socket.gethostbyaddr(ip)[0]
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except (socket.herror, socket.gaierror, socket.timeout):
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logger.debug(f"DNS: Failed to resolve name for IP {ip}")
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subnet = ipaddress.ip_network(f"{ip}/24", strict=False)
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if subnet not in self.nbtscan_results:
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self.scan_nbtscan(str(subnet))
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if ip in self.nbtscan_cache:
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return self.nbtscan_cache[ip]
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logger.debug(f"Failed to determine hostname for IP {ip} via DNS or NetBIOS")
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return None
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class DeviceStorage:
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"""Класс для хранения и управления данными об устройствах."""
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def __init__(self, storage_path: str = "storage/devices/devices.json", translations: Translations = Depends(get_translations())):
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self.storage_file = Path(storage_path)
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self.storage_file.parent.mkdir(parents=True, exist_ok=True)
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self.offline_timeout = timedelta(days=7)
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self.translations = translations
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def load_devices(self) -> Dict[str, Device]:
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try:
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if self.storage_file.exists():
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with open(self.storage_file, "r", encoding="utf-8") as f:
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data = json.load(f)
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if not isinstance(data, dict) or "devices" not in data:
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logger.warning(f"Invalid JSON structure in {self.storage_file}, expected {'devices': [...]}, got {data}")
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return {}
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devices = {}
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for device_data in data.get("devices", []):
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device = Device(**device_data)
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if device.mac:
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devices[device.mac] = device
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return self._clean_old_devices(devices)
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return {}
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except json.JSONDecodeError as e:
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logger.error(f"JSON decode error in {self.storage_file}: {str(e)}")
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return {}
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except Exception as e:
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logger.error(f"Error loading devices: {str(e)}")
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return {}
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def _clean_old_devices(self, devices: Dict[str, Device]) -> Dict[str, Device]:
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now = datetime.now()
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filtered = {}
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for mac, device in devices.items():
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if device.status == "offline" and device.last_seen:
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try:
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last_seen = datetime.fromisoformat(device.last_seen)
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if now - last_seen <= self.offline_timeout:
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filtered[mac] = device
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else:
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logger.info(f"Removed device {mac} (offline > 7 days)")
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except ValueError:
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logger.warning(f"Invalid last_seen format for device {mac}")
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else:
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filtered[mac] = device
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return filtered
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def save_devices(self, devices: List[Device]) -> None:
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try:
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data = SubnetScanResult(devices=devices).model_dump()
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with open(self.storage_file, "w", encoding="utf-8") as f:
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json.dump(data, f, indent=2, ensure_ascii=False)
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logger.info(f"Saved {len(devices)} devices to {self.storage_file}")
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except Exception as e:
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logger.error(f"Error saving devices: {str(e)}")
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raise Exception(self.translations.gettext("Ошибка при сохранении устройств: {error}").format(error=str(e)))
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class SubnetService:
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"""Сервис для сканирования подсетей и управления устройствами."""
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def __init__(self, translations: Translations = Depends(get_translations())):
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self.interface = self._get_default_interface()
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self.network_scanner = NetworkScanner(self.interface)
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self.port_scanner = PortScanner(self.interface)
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self.device_info = DeviceInfoCollector()
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self.storage = DeviceStorage()
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self.translations = translations
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logger.info(f"Initialized SubnetService with interface: {self.interface}")
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def _get_default_interface(self) -> str:
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try:
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gateways = netifaces.gateways()
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default_gateway = gateways.get("default", {}).get(netifaces.AF_INET)
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if default_gateway:
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iface = default_gateway[1]
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logger.info(f"Default interface from gateway: {iface}")
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return iface
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interfaces = netifaces.interfaces()
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for iface in interfaces:
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if iface != "lo":
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addrs = netifaces.ifaddresses(iface)
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if netifaces.AF_INET in addrs:
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logger.info(f"Selected interface: {iface}")
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return iface
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logger.warning("No suitable interface found, defaulting to eth0")
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return "eth0"
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except Exception as e:
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logger.warning(f"Failed to determine interface: {str(e)}, defaulting to eth0")
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return "eth0"
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def _get_default_subnet(self) -> str:
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"""Автоматически определяет подсеть локального устройства."""
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try:
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interfaces = netifaces.interfaces()
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for iface in interfaces:
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if iface == "lo" or iface != self.interface:
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continue
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addrs = netifaces.ifaddresses(iface)
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if netifaces.AF_INET in addrs:
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ip_info = addrs[netifaces.AF_INET][0]
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ip = ip_info["addr"]
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netmask = ip_info["netmask"]
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# Преобразуем маску из строки (например, "255.255.255.0") в CIDR
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mask = ipaddress.ip_network(f"0.0.0.0/{netmask}", strict=False).prefixlen
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network = ipaddress.ip_network(f"{ip}/{mask}", strict=False)
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logger.info(f"Auto-detected subnet: {network} (IP: {ip}, Mask: {netmask} -> /{mask})")
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return str(network)
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logger.warning("No suitable subnet found, defaulting to 0.0.0.0/0")
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return "0.0.0.0/0"
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except Exception as e:
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logger.error(f"Error determining default subnet: {str(e)}")
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return "0.0.0.0/0"
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def scan_subnet(self, subnet: Optional[str] = None) -> SubnetScanResult:
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"""Сканирует указанную подсеть и возвращает результаты.
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Args:
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subnet (Optional[str]): Подсеть в формате CIDR (например, "10.1.1.0/24").
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Если None или пустая строка, определяется автоматически.
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Returns:
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SubnetScanResult: Объект с результатами сканирования, содержащий список
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устройств.
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"""
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start_time = time.time()
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devices = []
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now = datetime.now().astimezone()
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formatted_now = now.strftime("%d-%m-%Y, %H:%M")
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try:
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# Определяем подсеть, если не указана или пустая
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if not subnet or subnet.strip() == "":
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subnet = self._get_default_subnet()
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if subnet == "0.0.0.0/0":
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logger.warning("Default subnet is invalid, scan aborted")
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return SubnetScanResult(devices=devices)
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saved_devices = self.storage.load_devices()
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local_device = self._get_local_device(subnet)
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if local_device:
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local_device.status = "online"
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local_device.last_seen = formatted_now
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devices.append(local_device)
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if local_device.mac:
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saved_devices[local_device.mac] = local_device
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logger.info(f"Detected local device: {local_device.ip}, MAC: {local_device.mac}")
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logger.info(f"Scanning subnet: {subnet} with interface: {self.interface}")
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discovered_devices = self.network_scanner.scan(subnet)
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logger.info(f"Discovered devices: {len(discovered_devices)}")
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self.device_info.scan_nbtscan(subnet)
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def process_device(ip_mac: Tuple[str, str]) -> Optional[Device]:
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ip, mac = ip_mac
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if local_device and ip == local_device.ip:
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return None
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existing_device = saved_devices.get(mac)
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if existing_device:
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return Device(
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ip=ip,
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mac=mac,
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hostname=self.device_info.get_hostname(ip) or existing_device.hostname,
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vendor=self.device_info.get_vendor(mac),
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open_ports=existing_device.open_ports,
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status="online",
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last_seen=formatted_now,
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note=existing_device.note,
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)
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vendor = self.device_info.get_vendor(mac)
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hostname = self.device_info.get_hostname(ip)
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return Device(
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ip=ip,
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mac=mac,
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hostname=hostname,
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vendor=vendor,
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open_ports=[],
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status="online",
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last_seen=formatted_now,
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note=None,
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)
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with ThreadPoolExecutor(max_workers=10) as executor:
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device_results = executor.map(process_device, discovered_devices)
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devices.extend([d for d in device_results if d is not None])
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active_macs = {d.mac for d in devices if d.mac}
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for mac, device in saved_devices.items():
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if mac not in active_macs:
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device.status = "offline"
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devices.append(device)
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devices.sort(key=lambda x: int(ipaddress.IPv4Address(x.ip)))
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for device in devices:
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if device.mac:
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saved_devices[device.mac] = device
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self.storage.save_devices(list(saved_devices.values()))
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logger.info(
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f"Subnet scan {subnet} completed in {time.time() - start_time:.2f} seconds, "
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f"found {len(devices)} devices (active: {len(active_macs)})"
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)
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return SubnetScanResult(devices=devices)
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except Exception as e:
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logger.error(f"Error scanning subnet {subnet}: {str(e)}")
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return SubnetScanResult(devices=devices)
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def _get_local_device(self, subnet: str) -> Optional[Device]:
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now = datetime.now().astimezone()
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formatted_now = now.strftime("%d-%m-%Y, %H:%M")
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try:
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subnet_network = ipaddress.ip_network(subnet, strict=False)
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interfaces = netifaces.interfaces()
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for iface in interfaces:
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if iface == "lo":
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continue
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addrs = netifaces.ifaddresses(iface)
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if netifaces.AF_INET in addrs and netifaces.AF_LINK in addrs:
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ip = addrs[netifaces.AF_INET][0]["addr"]
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if ipaddress.ip_address(ip) in subnet_network:
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mac = addrs[netifaces.AF_LINK][0]["addr"]
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vendor = self.device_info.get_vendor(mac)
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hostname = self.device_info.get_hostname(ip)
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logger.info(f"Local device detected: IP={ip}, MAC={mac}, Interface={iface}")
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return Device(
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ip=ip,
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mac=mac,
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hostname=hostname,
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vendor=vendor,
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open_ports=[],
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status="online",
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last_seen=formatted_now,
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note=None,
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)
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logger.warning(f"Local device not found in subnet {subnet}")
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return None
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except Exception as e:
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logger.warning(f"Failed to get local device: {str(e)}")
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return None
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def add_note(self, mac: str, note: str) -> Tuple[bool, Optional[str]]:
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try:
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saved_devices = self.storage.load_devices()
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if mac not in saved_devices:
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logger.warning(f"Device with MAC {mac} not found")
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return False, self.translations.gettext("Устройство с MAC {mac} не найдено").format(mac=mac)
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if saved_devices[mac].note is not None:
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logger.error(f"Note for device with MAC {mac} already exists")
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return False, self.translations.gettext("Заметка для устройства с MAC {mac} уже существует").format(mac=mac)
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saved_devices[mac].note = note
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self.storage.save_devices(list(saved_devices.values()))
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logger.info(f"Added note '{note}' for device with MAC {mac}")
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return True, None
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except Exception as e:
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logger.error(f"Error adding note for MAC {mac}: {str(e)}")
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return False, self.translations.gettext("Внутренняя ошибка сервера: {error}").format(error=str(e))
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def update_note(self, mac: str, note: str) -> Tuple[bool, Optional[str]]:
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try:
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saved_devices = self.storage.load_devices()
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if mac not in saved_devices:
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logger.warning(f"Device with MAC {mac} not found")
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return False, self.translations.gettext("Устройство с MAC {mac} не найдено").format(mac=mac)
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if saved_devices[mac].note is None:
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logger.error(f"Note for device with MAC {mac} does not exist")
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return False, self.translations.gettext("Заметка для устройства с MAC {mac} не существует").format(mac=mac)
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saved_devices[mac].note = note
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self.storage.save_devices(list(saved_devices.values()))
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logger.info(f"Updated note '{note}' for device with MAC {mac}")
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return True, None
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except Exception as e:
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logger.error(f"Error updating note for MAC {mac}: {str(e)}")
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return False, self.translations.gettext("Внутренняя ошибка сервера: {error}").format(error=str(e))
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def delete_note(self, mac: str) -> Tuple[bool, Optional[str]]:
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try:
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saved_devices = self.storage.load_devices()
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if mac not in saved_devices:
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logger.warning(f"Device with MAC {mac} not found")
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return False, self.translations.gettext("Устройство с MAC {mac} не найдено").format(mac=mac)
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if saved_devices[mac].note is None:
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logger.error(f"Note for device with MAC {mac} does not exist")
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return False, self.translations.gettext("Заметка для устройства с MAC {mac} не существует").format(mac=mac)
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saved_devices[mac].note = None
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self.storage.save_devices(list(saved_devices.values()))
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logger.info(f"Deleted note for device with MAC {mac}")
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return True, None
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except Exception as e:
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logger.error(f"Error deleting note for MAC {mac}: {str(e)}")
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return False, self.translations.gettext("Внутренняя ошибка сервера: {error}").format(error=str(e)) |