mirror of https://github.com/jumpserver/jumpserver
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
3.4 KiB
99 lines
3.4 KiB
import asyncio
|
|
import netifaces
|
|
import socket
|
|
import struct
|
|
|
|
from common.utils.timezone import local_now_display
|
|
from settings.utils import generate_ips, generate_ports
|
|
|
|
|
|
async def once_tcpdump(
|
|
interface, src_ips, src_ports, dest_ips, dest_ports, display, stop_event
|
|
):
|
|
loop = asyncio.get_event_loop()
|
|
s = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.ntohs(0x0003))
|
|
s.bind((interface, 0))
|
|
s.setblocking(False)
|
|
while not stop_event.is_set():
|
|
try:
|
|
packet = await loop.sock_recv(s, 65535)
|
|
except BlockingIOError:
|
|
await asyncio.sleep(0.1)
|
|
# 解析IP数据包
|
|
ip_header = packet[14:34]
|
|
ip_hdr = struct.unpack('!BBHHHBBH4s4s', ip_header)
|
|
# 判断是否为TCP数据包
|
|
protocol = ip_hdr[6]
|
|
if protocol != 6:
|
|
continue
|
|
# 解析TCP数据包
|
|
tcp_header = packet[34:54]
|
|
tcp_hdr = struct.unpack('!HHLLBBHHH', tcp_header)
|
|
# 获取源地址、源端口号、目标地址、目标端口等信息
|
|
src_ip, dest_ip = map(lambda x: socket.inet_ntoa(x), ip_hdr[8:10])
|
|
src_port, dest_port = tcp_hdr[0], tcp_hdr[1]
|
|
# 获取数据包类型和长度
|
|
packet_type = socket.htons(ip_hdr[6])
|
|
packet_len = len(packet)
|
|
# 获取TCP标志位、序号、确认号、部分数据等信息
|
|
seq, ack, flags = tcp_hdr[2], tcp_hdr[3], tcp_hdr[5]
|
|
data = packet[54:]
|
|
# 如果过滤的参数[源地址、源端口等]为空，则不过滤
|
|
# 各个过滤参数之间为 `且` 的关系
|
|
green_light = True
|
|
if src_ips and src_ip not in src_ips:
|
|
green_light = False
|
|
if src_ports and src_port not in src_ports:
|
|
green_light = False
|
|
if dest_ips and dest_ip not in dest_ips:
|
|
green_light = False
|
|
if dest_ports and dest_port not in dest_ports:
|
|
green_light = False
|
|
if not green_light:
|
|
continue
|
|
|
|
results = [
|
|
f'[{interface}][{local_now_display()}] {src_ip}:{src_port} -> '
|
|
f'{dest_ip}:{dest_port} ({packet_type}, {packet_len} bytes)',
|
|
f'\tFlags: {flags} Seq: {seq}, Ack: {ack}', f'\tData: {data}'
|
|
]
|
|
for r in results:
|
|
await display(r)
|
|
|
|
|
|
def list_show(items, default='all'):
|
|
return ','.join(map(str, items)) or default
|
|
|
|
|
|
async def verbose_tcpdump(interfaces, src_ips, src_ports, dest_ips, dest_ports, display=None):
|
|
if not display:
|
|
return
|
|
|
|
stop_event = asyncio.Event()
|
|
valid_interface = netifaces.interfaces()
|
|
if interfaces:
|
|
valid_interface = set(netifaces.interfaces()) & set(interfaces)
|
|
|
|
src_ips = generate_ips(src_ips)
|
|
src_ports = generate_ports(src_ports)
|
|
dest_ips = generate_ips(dest_ips)
|
|
dest_ports = generate_ports(dest_ports)
|
|
|
|
summary = [
|
|
f"[Summary] Tcpdump filter info: ",
|
|
f"Interface: [{list_show(valid_interface)}]",
|
|
f"Source address: [{list_show(src_ips)}]",
|
|
f"source port: [{list_show(src_ports)}]",
|
|
f"Destination address: [{list_show(dest_ips)}]",
|
|
f"Destination port: [{list_show(dest_ports)}]",
|
|
]
|
|
for s in summary:
|
|
await display(s)
|
|
|
|
params = [src_ips, src_ports, dest_ips, dest_ports, display, stop_event]
|
|
tasks = [
|
|
asyncio.create_task(once_tcpdump(i, *params)) for i in valid_interface
|
|
]
|
|
await asyncio.gather(*tasks)
|
|
stop_event.set()
|