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# coding=utf-8
import os
import sys
import time
from queue import Queue
from scapy import all as cap
from scapy.all import IP
from scapy.all import Padding
from scapy.all import Raw
from scapy.utils import hexdump
from scapy.arch.common import compile_filter #引入抓包工具
from PySide6 import QtWidgets #引入qt
from PySide6 import QtGui
from PySide6 import QtCore
from PySide6.QtWidgets import QTableWidgetItem as QTItem
from PySide6.QtWidgets import QListWidgetItem as QLItem
from PySide6.QtWidgets import QTreeWidgetItem as QRItem
from PySide6.QtWidgets import QMainWindow
from ui import main as main_ui
from ui import about as about_ui
from logger import logger
DIRNAME = os.path.dirname(os.path.abspath(__file__))
VERSION = "0.0.1"
MAXSIZE = 1024
LOGO = os.path.join(DIRNAME, 'images/logo.jpg')
class Signal(QtCore.QObject):
recv = QtCore.Signal(None)
class MainWindow(QMainWindow):
def __init__(self, parent=None) -> None:
super().__init__(parent)
self.ui = main_ui.Ui_MainWindow()
self.ui.setupUi(self)
self.sniffer = None
self.counter = 0
self.start_time = 0
self.signal = Signal()
self.queue = Queue()
self.about = None
self.setWindowTitle(f"这是一个网络嗅探器，嘻")
self.setWindowIcon(QtGui.QIcon(LOGO))
self.init_interfaces()
def init_interfaces(self):
for face in cap.get_working_ifaces():
self.ui.interfaceBox.addItem(face.name)
self.ui.startButton.clicked.connect(self.start_click)
self.ui.filterEdit.editingFinished.connect(self.validate_filter)
self.ui.packetTable.horizontalHeader().setStretchLastSection(True)
self.ui.packetTable.cellPressed.connect(self.update_content)
self.ui.treeWidget.itemPressed.connect(self.update_layer_content)
self.signal.recv.connect(self.update_packet)
def get_iface(self):
idx = self.ui.interfaceBox.currentIndex()
iface = cap.get_working_ifaces()[idx]
return iface
def validate_filter(self):
exp = self.ui.filterEdit.text().strip()
if not exp:
self.ui.filterEdit.setStyleSheet('')
self.ui.startButton.setEnabled(True)
return
try:
compile_filter(filter_exp=exp)
# 输入框背景变绿
self.ui.filterEdit.setStyleSheet('QLineEdit { background-color: rgb(33, 186, 69);}')
self.ui.startButton.setEnabled(True)
except Exception:
# 将输入框背景变红
self.ui.startButton.setEnabled(False)
self.ui.filterEdit.setStyleSheet('QLineEdit { background-color: rgb(219, 40, 40);}')
return
def get_packet_layers(self, packet):
counter = 0
while True:
layer = packet.getlayer(counter)
if layer is None:
break
yield layer
counter += 1
def update_layer_content(self, item, column):
if not hasattr(item, 'layer'):
return
layer = item.layer
self.ui.contentEdit.setText(hexdump(layer, dump=True))
def update_content(self, x, y):
logger.debug("%s, %s clicked", x, y)
item = self.ui.packetTable.item(x, 6)
if not hasattr(item, 'packet'):
return
logger.debug(item)
logger.debug(item.text())
packet = item.packet
self.ui.contentEdit.setText(hexdump(packet, dump=True))
self.ui.treeWidget.clear()
for layer in self.get_packet_layers(packet):
item = QRItem(self.ui.treeWidget)
item.layer = layer
item.setText(0, layer.name)
for name, value in layer.fields.items():
child = QRItem(item)
child.setText(0, f"{name}: {value}")
def update_packet(self):
packet = self.queue.get(False)
if not packet:
return
if self.ui.packetTable.rowCount() >= MAXSIZE:
self.ui.packetTable.removeRow(0)
row = self.ui.packetTable.rowCount()
self.ui.packetTable.insertRow(row)
# No.
self.counter += 1
self.ui.packetTable.setItem(row, 0, QTItem(str(self.counter)))
# Time
elapse = time.time() - self.start_time
self.ui.packetTable.setItem(row, 1, QTItem(f"{elapse:2f}"))
# source
if IP in packet:
src = packet[IP].src
dst = packet[IP].dst
else:
src = packet.src
dst = packet.dst
self.ui.packetTable.setItem(row, 2, QTItem(src))
# destination
self.ui.packetTable.setItem(row, 3, QTItem(dst))
# protocol
layer = None
for var in self.get_packet_layers(packet):
if not isinstance(var, (Padding, Raw)):
layer = var
protocol = layer.name
self.ui.packetTable.setItem(row, 4, QTItem(str(protocol)))
# length
length = f"{len(packet)}"
self.ui.packetTable.setItem(row, 5, QTItem(length))
# info
info = str(packet.summary())
item = QTItem(info)
item.packet = packet
self.ui.packetTable.setItem(row, 6, item)
def sniff_action(self, packet):
if not self.sniffer:
return
self.queue.put(packet)
self.signal.recv.emit()
def start_click(self):
logger.debug("start button was clicked")
if self.sniffer:
self.sniffer.stop()
self.sniffer = None
self.ui.startButton.setText("点这")
self.ui.interfaceBox.setEnabled(True)
self.ui.filterEdit.setEnabled(True)
return
exp = self.ui.filterEdit.text()
logger.debug("filter expression %s", exp)
iface = self.get_iface()
logger.debug("sniffing interface %s", iface)
self.sniffer = cap.AsyncSniffer(
iface=iface,
prn=self.sniff_action,
filter=exp,
)
self.sniffer.start()
self.counter = 0
self.start_time = time.time()
self.ui.startButton.setText("完事")
self.ui.interfaceBox.setEnabled(False)
self.ui.filterEdit.setEnabled(False)
self.ui.packetTable.clearContents()
self.ui.packetTable.setRowCount(0)
self.ui.treeWidget.clear()
self.ui.contentEdit.clear()
def main():
app = QtWidgets.QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec())
if __name__ == '__main__':
main()
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