""" 判断IP是哪种类别 """ def judgeIpClaasification(ip): try: ip_list=[int(i) for i in ip.split('.')] except: return 'ErrorIp','drop' for i in [1,2,3]: if ip_list[i]<=255 and ip_list[i]>=0: pass else: return 'ErrorIp','drop' if ip_list[0]==0 or ip_list[0]==127: return 'drop','drop' elif ip_list[0]<=126 and ip_list[0]>=1: if ip_list[0]==10: return 'A','PrivateIp' else: return 'A','drop' elif ip_list[0]<=191 and ip_list[0]>=128: if ip_list[0]==172 and ip_list[1]>=16 and ip_list[1]<=31: return 'B','PrivateIp' else: return 'B','drop' elif ip_list[0]<=223 and ip_list[0]>=192: if ip_list[0]==192 and ip_list[1]==168: return 'C','PrivateIp' else: return 'C','drop' elif ip_list[0]<=239 and ip_list[0]>=224: return 'D','drop' elif ip_list[0]<=255 and ip_list[0]>=240: return 'E','drop' """ 子网掩码为二进制下前面是连续的1,然后全是0。(例如:255.255.255.32就是一个非法的掩码) (注意二进制下全是1或者全是0均为非法子网掩码) """ def getBin(s): erjinzhi=bin(int(s))[2:] if len(erjinzhi)!=8: erjinzhi=''.join(['0'*(8-len(erjinzhi)),erjinzhi]) return erjinzhi def judgeYanMaClassification(ip): ip_list=ip.split('.') new_yanma='' for i in ip_list: new_yanma+=getBin(i) #全是0或者1的掩码也是错的 if len(new_yanma)==new_yanma.count('0') or len(new_yanma)==new_yanma.count('1'): return False first_0=new_yanma.index('0') #确保掩码前半段都是1,后半段都是0. if '0' in new_yanma[:first_0]: return False if '1' in new_yanma[first_0:]: return False else: return True Count_list={ 'A':0, 'B':0, 'C':0, 'D':0, 'E':0, 'ErrorIp':0, 'PrivateIp':0, 'drop':0 } A,B,C,D,E,ErrorIp,PrivateIp=0,0,0,0,0,0,0 try: while True: s=input() first,second=s.split('~') #如果ip是0或者127开头的,就不会继续下面的判断了 first_1=first.split('.')[0] if first_1=='0' or first_1=='127': pass else: #如果掩码错了,就不会继续判断了 yanma_res=judgeYanMaClassification(second) if not yanma_res: Count_list['ErrorIp']+=1 else: res1,res2=judgeIpClaasification(first) Count_list[res1]+=1 Count_list[res2]+=1 except Exception: print('{} {} {} {} {} {} {}'.format(Count_list['A'],Count_list['B'],Count_list['C'], Count_list['D'],Count_list['E'],Count_list['ErrorIp'],Count_list['PrivateIp'] ))