大蟒蛇python教程共享python3 QT5 端口转发工具两种场景分析

# -*- coding: utf-8 -*-     # 制作本地可执行文件  # pyinstaller -f -i ico.ico -w port.py  import sys  import json  import socket,threading  import os  import re  import traceback  from pyqt5 import qtwidgets,qtcore     from pyqt5.qtwidgets import qapplication, qwidget, qtextbrowser, qmessagebox  from pyqt5.qtgui import qicon, qpixmap     # 图标文件  iconb = b'x00x00x01x00x01x00  x00x00x01x00 x00xa8x10x00x00x16x00x00x00(x00x00x00 x00x00x00@x00x00x00x01x00 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0ax00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00xffxe0x07xffxffx80x01xffxffx80x01xffxffx80x01xffxfex00x00x7fxfex00x00x7fx80x00x00x01x80x00x00x01x80x00x00x01x80x00x00x01x80x00x00x01x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x00x80x00x00x01xc0x00x00x03xfex00x00x7fxffx00x00xff'        class ui_mainwindow(qwidget):         def setupui(self,mainwindow):          mainwindow.setobjectname("mainwindow")          self.centralwidget = qtwidgets.qwidget(mainwindow)          self.centralwidget.setobjectname("centralwidget")          mainwindow.setcentralwidget(self.centralwidget)             # self.setgeometry(300, 300, 300, 220)          # 固定窗口大小          self.setfixedsize(360, 360)          # self.setwindowtitle('端口映射')          if os.path.exists('1ico.ico'):              self.setwindowicon(qicon('ico.ico'))          else:              icon = qpixmap()              icon.loadfromdata(iconb)              self.setwindowicon(qicon(icon))             # 标签          self.label1 = qtwidgets.qlabel(self.centralwidget)          self.label1.setgeometry(qtcore.qrect(20, 20, 80, 20))          self.label2 = qtwidgets.qlabel(self.centralwidget)          self.label2.setgeometry(qtcore.qrect(20, 50, 80, 20))          self.label3 = qtwidgets.qlabel(self.centralwidget)          self.label3.setgeometry(qtcore.qrect(20, 80, 80, 20))             self.input1 = qtwidgets.qlineedit(self.centralwidget)          self.input1.setgeometry(qtcore.qrect(120, 20, 80, 22))          self.input1.setobjectname("input1")          self.input2 = qtwidgets.qlineedit(self.centralwidget)          self.input2.setgeometry(qtcore.qrect(120, 50, 200, 22))          self.input2.setobjectname("input2")          self.input3 = qtwidgets.qlineedit(self.centralwidget)          self.input3.setgeometry(qtcore.qrect(120, 80, 80, 22))          self.input3.setobjectname("input3")             # 放置按钮          self.pushbutton = qtwidgets.qpushbutton(self.centralwidget)          self.pushbutton.setgeometry(qtcore.qrect(120, 110, 80, 25))          self.stopbutton = qtwidgets.qpushbutton(self.centralwidget)          self.stopbutton.setgeometry(qtcore.qrect(220, 110, 80, 25))          self.stopbutton.setenabled(false)             self.savebutton = qtwidgets.qpushbutton(self.centralwidget)          self.savebutton.setgeometry(qtcore.qrect(220, 20, 45, 25))          self.loadbutton = qtwidgets.qpushbutton(self.centralwidget)          self.loadbutton.setgeometry(qtcore.qrect(270, 20, 45, 25))             self.text_browser = qtextbrowser(self.centralwidget)          self.text_browser.setgeometry(qtcore.qrect(20, 150, 320, 190))             self.retranslateui(mqt)          qtcore.qmetaobject.connectslotsbyname(mainwindow)         def retranslateui(self, mainwindow):          _translate = qtcore.qcoreapplication.translate          self.setwindowtitle(_translate("mainwindow", "端口映射"))          self.label1.settext(_translate("mainwindow", "本机端口:"))          self.label2.settext(_translate("mainwindow", "目标ip:"))          self.label3.settext(_translate("mainwindow", "目标端口:"))             self.pushbutton.settext(_translate("mainwindow", "开始"))          self.savebutton.settext(_translate("mainwindow", "保存"))          self.loadbutton.settext(_translate("mainwindow", "读取"))          self.stopbutton.settext(_translate("mainwindow", "停止"))     class pipethread(threading.thread):    def __init__(self, source, target):      threading.thread.__init__(self,daemon=true)      self.source = source      self.target = target       def run(self):      while true:        try:          data = self.source.recv(1024)          if not data: break          self.target.send(data)        except:          print("通道退出...")          break     # 本地与目标ip端口建立通道  sockarr = []  # 是否是运行状态 开始/停止  isrunning = true  # 本地绑定端口，停止的时候需要释放本地端口  bindarr = []     class forwarding(threading.thread):    def __init__(self, port, targethost, targetport,targettxt):      threading.thread.__init__(self,daemon=true)      self.targethost = targethost      self.targetport = targetport      self.targettxt = targettxt      self.sock = socket.socket(socket.af_inet, socket.sock_stream)      self.sock.bind(('0.0.0.0', port))      self.sock.listen(10)      global bindarr      bindarr.append(self.sock)       def run(self):      while true:        try:            client_fd, addr = self.sock.accept()        except exception as e:            print("forwarding exception")            break           print("try connect...")        global isrunning        if not isrunning:            print("停止运行")            break        print("connecting...")        global sockarr        target_fd = socket.socket(socket.af_inet, socket.sock_stream)        target_fd.connect((self.targethost, self.targetport))        sockarr.append(client_fd)        sockarr.append(target_fd)           self.targettxt.append('new connect')        # two direct pipe        thread_1 = pipethread(target_fd, client_fd)        thread_1.start()        thread_2 = pipethread(client_fd, target_fd)        thread_2.start()        print("connected")       def stop(self):        try:            global sockarr            global bindarr            for sock in sockarr:                print("关闭sock")                sock.close()            sockarr = []           except exception as e:          print("关闭线程异常")        try:            for bind in bindarr:                print("关闭bind本地端口")                bind.close()            bindarr = []        except exception as e:            print("关闭bind本地端口异常")     configfile = "config.txt"     thread0 = none  class mqt(qtwidgets.qmainwindow, ui_mainwindow):      def __init__(self):          super(mqt,self).__init__()          self.setupui(self)          self.pushbutton.clicked.connect(self.run)          self.savebutton.clicked.connect(self.save)          self.loadbutton.clicked.connect(self.load)          self.stopbutton.clicked.connect(self.stop)             # 加载本地配置文件          self.load()         def stop(self):          print("stop")             global isrunning          isrunning = false          global thread0          thread0.stop()          self.pushbutton.setenabled(true)          self.stopbutton.setenabled(false)          self.text_browser.append("停止")         def save(self):          tx1 = self.input1.text().strip()          tx2 = self.input2.text().strip()          tx3 = self.input3.text().strip()             if tx1=='' or tx2=='' or tx3=='':              self.text_browser.append("保存失败:配置信息不能为空")              return             arr = []          arr.append(tx1)          arr.append(tx2)          arr.append(tx3)          savejson = json.dumps(arr)          with open(configfile,"w", encoding='utf-8', errors="strict") as f:              f.write(savejson)             self.text_browser.append("保存成功:{}".format(savejson))          self.text_browser.append("文件名:{}".format(configfile))         def load(self):          if os.path.exists(configfile):              try:                  with open(configfile, 'r', encoding='utf-8', errors="strict") as f:                      text = f.read()                      arr = json.loads(text)                      if len(arr)==3:                          self.input1.settext(arr[0])                          self.input2.settext(arr[1])                          self.input3.settext(arr[2])                          self.text_browser.append("读取成功:{}".format(text))                      else:                          self.text_browser.append("读取异常:{}".format(text))                          self.text_browser.append("文件名:{}".format(configfile))              except exception as e:                  self.text_browser.append("读取异常")                  self.text_browser.append("文件名:{}".format(configfile))                  print("读取配置文件失败:")                  print(e)                  traceback.print_exc()          else:              self.text_browser.append("配置文件不存在")              self.text_browser.append("文件名:{}".format(configfile))         # 定义槽函数      def run(self):          print("执行了run")          global isrunning          try:              # 获取输入框              tx1 = self.input1.text().strip()              tx2 = self.input2.text().strip()              tx3 = self.input3.text().strip()                 numre = re.compile(r"[d]+")              ipre = re.compile(r"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$")              comre = re.compile(r"[.w-]*(:d{,8})")              if not numre.match(tx1) or not (int(tx1)>0 and int(tx1)<65536):                  qmessagebox.warning(none, "错误", "本机端口需要是数字，范围是 1-65535", qmessagebox.yes)                  return              if not numre.match(tx3) or not (int(tx3)>0 and int(tx3)<65536):                  qmessagebox.warning(none, "错误", "目标端口需要是数字，范围是 1-65535", qmessagebox.yes)                  return              if not (comre.match(tx2) or ipre.match(tx2)):                  qmessagebox.warning(none, "错误", "目标ip格式异常。", qmessagebox.yes )                  return                 # 校验完成              print('starting...')              port = int(tx1)              targethost = tx2              targetport = int(tx3)              print('localhost:{} => {}:{}'.format(port,targethost,targetport))              self.text_browser.settext('localhost:{} => {}:{}'.format(port,targethost,targetport))                 # sys.stdout = open('forwaring.log', 'w')              self.pushbutton.setenabled(false)              self.stopbutton.setenabled(true)              global thread0              thread0 = forwarding(port, targethost, targetport,self.text_browser)              thread0.start()              isrunning = true             except exception as e:              isrunning = false              self.pushbutton.setenabled(true)              self.stopbutton.setenabled(false)              print("失败:")              print(e)              traceback.print_exc()     if __name__ == '__main__':      app = qapplication(sys.argv)      win = mqt()      win.show()      sys.exit(app.exec_())