Para el diseño de cursos de red informática, se debe escribir un programa Ping o un programa tracert.
Sin usar C / C ++, Java no proporciona control debajo de la capa de transporte. Tuve que usar Python para escribir
Explicar la referencia https://www.cnblogs.com/JetpropelledSnake/p/9177770.html
Referencia https://wordpress.youran.me/python-raw-socket-programming/
Referencia https://www.cnblogs.com/JenningsMao/p/9487465.html
Consulte el uso de python struct https://www.cnblogs.com/sexyboy/p/8509666.html
Código fuente fuente https://github.com/Lingerhk/hacking_script/blob/master/net_attacking/icmp_ping_tool.py
El código fuente está escrito en Python 2.
Cámbielo a Python 3
# -*- coding: utf-8 -*- import os import argparse import socket import struct import select import time # 请求回显头 ICMP_ECHO_REQUEST = 8 # Platform specific DEFAULT_TIMEOUT = 2 DEFAULT_COUNT = 1 class Pinger(object): """ Pings to a host -- the Pythonic way""" def __init__(self, target_host, count=DEFAULT_COUNT, timeout=DEFAULT_TIMEOUT): self.target_host = target_host self.count = count self.timeout = timeout # 计算校验和 def do_checksum(self, source_string): """ Verify the packet integritity """ sum = 0 max_count = (len(source_string) / 2) * 2 count = 0 while count < max_count: val = source_string[count + 1] * 256 + source_string[count] sum = sum + val sum = sum & 0xffffffff count = count + 2 if max_count < len(source_string): sum = sum + ord(source_string[len(source_string) - 1]) sum = sum & 0xffffffff sum = (sum >> 16) + (sum & 0xffff) sum = sum + (sum >> 16) answer = ~sum answer = answer & 0xffff answer = answer >> 8 | (answer << 8 & 0xff00) return answer def receive_pong(self, sock, ID, timeout): """ Receive ping from the socket. """ time_remaining = timeout while True: start_time = time.time() readable = select.select([sock], [], [], time_remaining) time_spent = (time.time() - start_time) if readable[0] == []: # Timeout return time_received = time.time() recv_packet, addr = sock.recvfrom(1024) icmp_header = recv_packet[20:28] type, code, checksum, packet_ID, sequence = struct.unpack( "bbHHh", icmp_header ) if packet_ID == ID: bytes_In_double = struct.calcsize("d") time_sent = struct.unpack("d", recv_packet[28:28 + bytes_In_double])[0] return time_received - time_sent time_remaining = time_remaining - time_spent if time_remaining <= 0: return def send_ping(self, sock, ID): """ Send ping to the target host """ target_addr = socket.gethostbyname(self.target_host) my_checksum = 0 # Create a dummy heder with a 0 checksum. header = struct.pack("bbHHh", ICMP_ECHO_REQUEST, 0, my_checksum, ID, 1) bytes_In_double = struct.calcsize("d") data = (192 - bytes_In_double) * "R" data = struct.pack("d", time.time()) + bytes(data.encode('utf-8')) # Get the checksum on the data and the dummy header. my_checksum = self.do_checksum(header + data) header = struct.pack( "bbHHh", ICMP_ECHO_REQUEST, 0, socket.htons(my_checksum), ID, 1 ) packet = header + data sock.sendto(packet, (target_addr, 1)) def ping_once(self): """ Returns the delay (in seconds) or none on timeout. """ icmp = socket.getprotobyname("icmp") try: sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp) except socket.error as e: if e.errno == 1: # Not superuser, so operation not permitted e.msg += "ICMP messages can only be sent from root user processes" raise socket.error(e.msg) except Exception as e: print("Exception: %s" % (e)) my_ID = os.getpid() & 0xFFFF self.send_ping(sock, my_ID) delay = self.receive_pong(sock, my_ID, self.timeout) sock.close() return delay def ping(self): """ Run the ping process """ for i in range(self.count): print("Ping to %s..." % self.target_host, ) try: delay = self.ping_once() except socket.gaierror as e: print("Ping failed. (socket error: '%s')" % e[1]) break if delay == None: print("Ping failed. (timeout within %ssec.)" % self.timeout) else: delay = delay * 1000 print("Get pong in %0.4fms" % delay) if __name__ == '__main__': parser = argparse.ArgumentParser(description='Python ping') parser.add_argument('host', action="store", help=u'主机名') given_args = parser.parse_args() target_host = given_args.host pinger = Pinger(target_host=target_host) pinger.ping()
Este es el código de línea de comando
El siguiente es el código que agregué a la GUI de acuerdo con los requisitos de diseño del curso después de modificarlo
# -*- coding: utf-8 -*- import os import argparse import socket import struct import select import threading import time # 请求回显头 from concurrent.futures.thread import ThreadPoolExecutor from tkinter import * from tkinter import ttk ICMP_ECHO_REQUEST = 8 # Platform specific DEFAULT_TIMEOUT = 2 DEFAULT_COUNT = 1 # 创建锁 lock= threading.Lock() Running = True class Pinger(object): """ Pings to a host -- the Pythonic way""" def __init__(self, target_host, count=DEFAULT_COUNT, timeout=DEFAULT_TIMEOUT): self.target_host = target_host self.count = count self.timeout = timeout # 计算校验和 def do_checksum(self, source_string): """ Verify the packet integritity """ sum = 0 max_count = (len(source_string) / 2) * 2 count = 0 while count < max_count: val = source_string[count + 1] * 256 + source_string[count] sum = sum + val sum = sum & 0xffffffff count = count + 2 if max_count < len(source_string): sum = sum + ord(source_string[len(source_string) - 1]) sum = sum & 0xffffffff sum = (sum >> 16) + (sum & 0xffff) sum = sum + (sum >> 16) answer = ~sum answer = answer & 0xffff answer = answer >> 8 | (answer << 8 & 0xff00) return answer def receive_pong(self, sock, ID, timeout): """ Receive ping from the socket. """ time_remaining = timeout while True: start_time = time.time() readable = select.select([sock], [], [], time_remaining) time_spent = (time.time() - start_time) if readable[0] == []: # Timeout return time_received = time.time() recv_packet, addr = sock.recvfrom(1024) icmp_header = recv_packet[20:28] type, code, checksum, packet_ID, sequence = struct.unpack( "bbHHh", icmp_header ) if packet_ID == ID: bytes_In_double = struct.calcsize("d") time_sent = struct.unpack("d", recv_packet[28:28 + bytes_In_double])[0] return time_received - time_sent time_remaining = time_remaining - time_spent if time_remaining <= 0: return def send_ping(self, sock, ID): """ Send ping to the target host """ target_addr = socket.gethostbyname(self.target_host) my_checksum = 0 # Create a dummy heder with a 0 checksum. header = struct.pack("bbHHh", ICMP_ECHO_REQUEST, 0, my_checksum, ID, 1) bytes_In_double = struct.calcsize("d") data = (192 - bytes_In_double) * "R" data = struct.pack("d", time.time()) + bytes(data.encode('utf-8')) # Get the checksum on the data and the dummy header. my_checksum = self.do_checksum(header + data) header = struct.pack( "bbHHh", ICMP_ECHO_REQUEST, 0, socket.htons(my_checksum), ID, 1 ) packet = header + data sock.sendto(packet, (target_addr, 1)) def ping_once(self): """ Returns the delay (in seconds) or none on timeout. """ icmp = socket.getprotobyname("icmp") try: sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp) except socket.error as e: if e.errno == 1: # Not superuser, so operation not permitted e.msg += "ICMP messages can only be sent from root user processes" raise socket.error(e.msg) except Exception as e: print("Exception: %s" % (e)) my_ID = os.getpid() & 0xFFFF self.send_ping(sock, my_ID) delay = self.receive_pong(sock, my_ID, self.timeout) sock.close() return delay def ping(self): """ Run the ping process """ for i in range(self.count): #print("Ping to %s..." % self.target_host, ) try: delay = self.ping_once() except socket.gaierror as e: return -2 print("Ping failed. (socket error: '%s')" % e[1]) break if delay == None: #return self.timeout return -2 print("Ping failed. (timeout within %ssec.)" % self.timeout) else: delay = delay * 1000 return delay print("Get ping in %0.4fms" % delay) def closePool(): global Running Running= False print("hah") def clearTb(): x = tb.get_children() for item in x: tb.delete(item) numlb['text']=0 def insertRes(): global Running Running = True clearTb() timeout= int(t6.get())/1000 threadnum = int(t7.get()) print(threadnum) print(timeout) start=int(t4.get()) end=int(t5.get()) #run("www.baidu.com") pool = ThreadPoolExecutor(threadnum) for i in range(start,end): ip = t1.get() + '.' + t2.get() + '.' + t3.get() + '.' + str(i) v =pool.submit(run,ip,i,timeout) def run(ipstart,i,timeout): global Running if(Running==False): return ping = Pinger(ipstart,timeout=timeout) res1=ping.ping() res2=ping.ping() res3=ping.ping() if(res1==-2 or res2==-2 or res3==-2): tb.insert("", i, value=(ipstart, "超时或错误")) else: res=(res1+res2+res3)/ 3 res=str(round(res,4))+'ms' tb.insert("", i, value=(ipstart, res)) lock.acquire() num = int(numlb['text']) num +=1 numlb['text']=num lock.release() if __name__ == '__main__': # 创建 窗口 root=Tk() # 先初始化 root.title("一个简单的Python Ping程序 by Duskry Ren ") root.geometry("720x500") root.resizable(False, False) frame1= Frame(root) frame1.pack() #frame1.place(x=0,y=0,width=720,height=50) lb1=Label(frame1,text=' IP地址：',font=20) lb1.pack(side=LEFT) t1 = Entry(frame1,font=20,textvariable=IntVar,width=6) t1.pack(side=LEFT) t1.insert(0,'10') lb2 = Label(frame1, text='.', font=20) lb2.pack(side=LEFT) t2 = Entry(frame1, font=20, textvariable=IntVar, width=6) t2.pack(side=LEFT) t2.insert(0, "1") lb3 = Label(frame1, text='.', font=20) lb3.pack(side=LEFT) t3 = Entry(frame1, font=20, textvariable=IntVar, width=6) t3.pack(side=LEFT) t3.insert(0,"11") lb3 = Label(frame1, text='从', font=20) lb3.pack(side=LEFT) t4 = Entry(frame1, font=20, textvariable=IntVar, width=6) t4.pack(side=LEFT) t4.insert(0,"0") lb3 = Label(frame1, text='到', font=20) lb3.pack(side=LEFT) t5 = Entry(frame1, font=20, textvariable=IntVar, width=6) t5.pack(side=LEFT) t5.insert(0,"10") lb3 = Label(frame1, text=' 超时：', font=20) lb3.pack(side=LEFT) t6 = Entry(frame1, font=20, textvariable=IntVar, width=6) t6.pack(side=LEFT) t6.insert(0,"2000") lb3 = Label(frame1, text=' 线程：', font=20) lb3.pack(side=LEFT) t7 = Entry(frame1, font=20, textvariable=IntVar, width=6) t7.pack(side=LEFT) t7.insert(0,3) frame2 = Frame(root,width=720,height=200) frame2.pack() scroll1 = Scrollbar(frame2) scroll1.pack(side=RIGHT, fill=Y) tb = ttk.Treeview(frame2,yscrollcommand=scroll1.set,show="headings",height=12) tb['columns']=("ip","time") tb.column("ip",width=320,anchor='center') tb.column("time",width=320,anchor='center') tb.heading("ip",text='ip') tb.heading('time',text='状态') tb.pack() frame3 = Frame(root,bg='gray') frame3.pack(fill=X) btn1=ttk.Button(frame3,text="开始",command=insertRes) btn1.pack(side=LEFT) btn2= ttk.Button(frame3,text='结束',command=closePool) btn2.pack(side=LEFT) btn3= ttk.Button(frame3,text="清空",command=clearTb) btn3.pack(side=LEFT) numlb = Label(frame3,text='0') numlb.pack(side =RIGHT) lb = Label(frame3, text="响应数：") lb.pack(side=RIGHT) #text = Text(frame2,font=26,yscrollcommand=scroll1.set) #text.pack(fill=BOTH, expand=YES) #insertRes() root.mainloop() # parser = argparse.ArgumentParser(description='Python ping') # parser.add_argument('host', action="store", help=u'主机名') # given_args = parser.parse_args() # target_host = given_args.host #pinger = Pinger(target_host='www.baidu.com') #pinger.ping()
