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python练习_简单登录

python练习_简单登录

需求：

  1. 做一个登录的小程序，验证用户与密码
  2. 要求登录三次错误后锁定

 

以下代码实现的功能与思路：

 

功能:

    1、除admin以外的用户累计登录失败次数超过三次则锁定，此时需要管理员解锁。
    2、当前IP地址登录失败五次则锁定IP地址一分钟后解锁。
    3、admin管理员有以下管理功能 锁定用户、解锁用户、更改密码、添加用户、删除用户。
    4、普通用户拥有更改密码的功能。

流程图：

 

思路：

1、用户信息通过ConfigParser模块进行处理并保存到文件

2、通过保存文件中counter 判断登录失败次数

3、通过socket获取当前计算机IP，如果失败把IP记录到文件中，并加入通过time获取的当前时间戳

4、管理功能通过ConfigParser模块中的一些功能处理存储用户信息的文件即可

 

代码Python2.7执行环境：

使用方式：

在linux上直接运行main.py即可
windows运行请把 225行解除注释，把226行注释

测试账号：
用户admin 密码：admin.123
用户test 密码：admin.123
用户test1 密码：admin.123 test1 默认锁定状态

  1 #!/usr/bin/env python
  2 # -*- coding:utf-8 -*-
  3 import time
  4 import ConfigParser
  5 import socket
  6 import webbrowser
  7 import sys
  8 import getpass
  9 
 10 # 全局变量 localIP 获取本地ip用于锁定本地ip，user_config操作用户文件句柄
 11 LOCAL_IP = socket.gethostbyname(socket.gethostname())
 12 user_config = ConfigParser.ConfigParser()
 13 user_config.read('userdb')
 14 
 15 class Admin_function(object):
 16     '''
 17     admin管理员功能类
 18     '''
 19     def __init__(self):
 20         pass
 21 
 22     def Admin_function_main(self):
 23         '''
 24         调用函数，根据输入指令调用类中的相关功能
 25         '''
 26         while True:
 27             print('''
 28             -------------Operation menu------------
 29                       Change password：pas
 30                       Unlocked：lc
 31                       Lock the user：ul
 32                       Add user：in
 33                       Delete user:rm
 34                       Exit:exit
 35             ---------------------------------------
 36         ''')
 37             admin_operation = raw_input("Please enter an action:")
 38             if admin_operation == "pas":
 39                 self.pas_reset()
 40             elif admin_operation == "lc":
 41                 self.counter_tag = 0
 42                 self.unlock_lock_user()
 43             elif admin_operation == "ul":
 44                 self.counter_tag = 3
 45                 self.unlock_lock_user()
 46             elif admin_operation == "in":
 47                 self.user_app_del = "in"
 48                 self.add_del_user()
 49             elif admin_operation == "rm":
 50                 self.user_app_del = "rm"
 51                 self.add_del_user()
 52             elif admin_operation == "exit":
 53                 sys.exit()
 54             else:
 55                 print("Input Error")
 56 
 57     def users(self):
 58         '''
 59         判断admin输入用户是否存在
 60         '''
 61         while True:
 62             self.userlist = user_config.sections()
 63             print("------------Current user-------------")
 64             for single_user in self.userlist:
 65                 print("               %s"%single_user)
 66             print("-------------------------------------")
 67             self.admin_inuser = raw_input("Please enter a user：")
 68             if self.admin_inuser in self.userlist:
 69                 break
 70             else:
 71                 print("User does not exist")
 72 
 73     def unlock_lock_user(self):
 74         '''
 75         锁定与解锁，主要更改usedb中的counter项，如果用户输入admin则不执行操作
 76         '''
 77         self.users()
 78         if self.admin_inuser == "admin":
 79             print("This action is not valid for admin")
 80         else:
 81             user_config.set(self.admin_inuser,'counter',self.counter_tag)
 82             user_config.write(open('userdb', "w"))
 83             if self.counter_tag == 0 :
 84                 print_str = "Unlock"
 85             else:
 86                 print_str = "locking"
 87             print("User %s is %s"%(self.admin_inuser,print_str))
 88 
 89     def pas_reset(self):
 90         '''
 91         更改密码函数，用于更改用户和admin的密码，密码最小长度不能低于8位，此处可以增加
 92         复杂度判断，主要更改userdb中的password字段
 93         '''
 94         self.users()
 95         admin_inpas = raw_input("Please enter a reset password (no less than 8 digits)：")
 96         if len(admin_inpas) > 7:
 97             print("The password has been reset to:%s"%(admin_inpas))
 98             user_config.set(self.admin_inuser,'password',admin_inpas)
 99             user_config.write(open('userdb', "w"))
100         else:
101             print("Password length is less than 8 digits Please re-enter")
102 
103     def add_del_user(self):
104         '''
105         增删用户操作，增加用户时判断用户是否存在，不存在则添加，
106         并输入设定用户密码，同样不能少于八位（可增加密码复杂度判断）对admin无效
107         删除用户时，对用户进行判断，存在则删除，对admin无效
108         '''
109         userlists = user_config.sections()
110         print("------------Current user-------------")
111         for single_user in userlists:
112             print("              %s"%single_user)
113         print("-------------------------------------")
114         add_name = raw_input("Please enter a user:")
115         if add_name == 'admin':
116             print("This action is not valid for admin")
117         else:
118             if self.user_app_del == "in":
119                 if add_name in userlists:
120                     print("User already exists")
121                 else:
122                     while True:
123                         add_inpas = raw_input("Please enter a password(no less than 8 digits)：")
124                         if len(add_inpas) > 7:
125                             user_config.add_section(add_name)
126                             user_config.set(add_name,'password',add_inpas)
127                             user_config.set(add_name,'counter',"0")
128                             user_config.write(open('userdb', "w"))
129                             print("The[%s] user creation is complete"%add_name)
130                             break
131                         elif add_inpas == "exit":
132                             break
133                         else:
134                             print("Password length is less than 8 digits Please re-enter")
135             else:
136                 if add_name in userlists:
137                     user_config.remove_section(add_name)
138                     user_config.write(open('userdb', "w"))
139                     print("[%s]User deleted"%add_name)
140                 else:
141                     print("User does not exist")
142 
143 class user_function(object):
144     '''
145     普通用户功能类
146     self.user 封装传入的用户
147     '''
148     def __init__(self,inuser):
149         self.user = inuser
150 
151     def user_main(self):
152         '''
153         调用功能的函数
154         '''
155         while True:
156             print('''
157             -----------Operation menu-----------
158                     Change password：pas
159                     Exit：exit
160             ------------------------------------
161             ''')
162             user_main_in = raw_input("Please enter an action:")
163             if user_main_in == "pas":
164                 self.pas_reset()
165             elif user_main_in == "exit":
166                 sys.exit()
167             else:
168                 print("Input Error")
169 
170     def pas_reset(self):
171         user_inpas = raw_input("Please enter a reset password (no less than 8 digits)：")
172         if len(user_inpas) > 7:
173             print("The password has been reset to:%s"%user_inpas)
174             user_config.set(self.user,'password',user_inpas)
175             user_config.write(open('userdb', "w"))
176         else:
177             print("The password is less than 8 digits long")
178 
179 def for_count():
180     '''
181     主调函数，在执行前调用ip_Locking_verify（）函数，用于IP锁定验证
182     当用户登录错误次数超过五次后将锁定ip地址，一分钟后开放并获取当前时间的时间戳，
183     传入in_lock函数中;当条件正常的时候，传入用户验证函数
184     '''
185     user_count = 0
186     while True:
187         lock_times = time.time()
188         new_lock_times = str(lock_times).split('.')[0]
189         ip_Locking_verify(new_lock_times)
190         user_certification()
191         user_count += 1
192         if user_count == 5:
193             ip_lock(new_lock_times)
194             print("Maximum login limit, see a video, please log in again after 1 minute")
195             time.sleep(1.5)
196             webbrowser.open("https://v.qq.com/x/page/i0014jfvo9j.html",new=0,autoraise=True)
197             sys.exit()
198 
199 def user_certification():
200     '''
201     user certification(用户认证)
202     用户验证成功后，进行密码验证，admin用户不计算在次数锁定条件中
203     '''
204     times = time.strftime("%H:%M:%S",time.localtime(time.time()))
205     user_in = raw_input("login user [%s] :"%times)
206     user_list = user_config.sections()
207     if user_in in user_list:
208         if user_in == "admin":
209             user_state = "0"
210         else:
211             user_state = user_config.get(user_in,"counter")
212         if int(user_state) < 3:
213             password_ertification(user_in)
214         else:
215             print("User is locked Please contact the administrator to unlock")
216     else:
217         print("User name wrong")
218 
219 def password_ertification(user):
220     '''
221     密码验证，失败则保持用户文件中登录次数增加1当到达三次后则锁定
222     密码验证成功后进入用户菜单，并清除登录计数
223     linux启用getpass输入密码不显示
224     '''
225     password_in = raw_input("login password :")
226 #    password_in = getpass.getpass("login password :")
227     user_password = user_config.get(user,"password")
228     if password_in == user_password:
229         user_config.set(user,'counter',0)
230         user_config.write(open('userdb', "w"))
231         if user == 'admin':
232             admin_class = Admin_function()
233             admin_class.Admin_function_main()
234         else:
235             user_class = user_function(user)
236             user_class.user_main()
237     else:
238         if user == 'admin':
239             print("Password mistake")
240         else:
241             user_counter = user_config.get(user,"counter")
242             counter_value = int(user_counter) + 1
243             user_config.set(user,'counter',str(counter_value))
244             user_config.write(open('userdb', "w"))
245             print("Password mistake")
246 
247 def ip_lock(in_lock_times):
248     '''
249     IP锁定，触发此函数，将把ip和当前你时间戳记录到iplist文件中
250     '''
251     with open('iplist','a') as ip_lock_in:
252         lock_in_content = "%s:%s\n"%(LOCAL_IP,in_lock_times)
253         ip_lock_in.write(lock_in_content)
254 def ip_Locking_verify(time_stamp):
255     '''
256     验证当前ip是否被锁定，符合则解锁时间则解锁
257     通过iplist文件进行判断，程序执行时会读取现在的时间戳
258     然后减去记录在文件中的时间戳，如果大60则将条目删除，否则输出解锁时间
259     '''
260     ip_list = []
261     with open('iplist','rU')as main_iplist :
262         for lock_ip in main_iplist.readlines():
263             ip_list.append(lock_ip)
264             if LOCAL_IP in lock_ip:
265                 new_ip_Locking = str(lock_ip).split(':')[1]
266                 if int(time_stamp) - int(new_ip_Locking) > 60:
267                     ip_list.remove(lock_ip)
268                     print("The current IP[%s] is unlocked"%LOCAL_IP)
269                 else:
270                     remaining_time = 60 - (int(time_stamp) - int(new_ip_Locking))
271                     print("The current IP[%s] is locked，Remaining unlock time [%s] seconds"%(LOCAL_IP,remaining_time))
272                     sys.exit()
273         open_iplist = open("iplist", "w+")
274         if ip_list:
275             open_iplist.writelines(ip_list)
276         else:
277             open_iplist.writelines("")
278         open_iplist.close()
279 
280 if __name__ == '__main__':
281     for_count()
登录代码

user存储用户数据的格式

[admin]
password = admin.123
counter = 0

[test]
password = admin.123
counter = 0

[test1]
password = admin.123
counter = 3

创建一个叫iplist的文件，到此即可正常运行

 

posted @ 2017-01-13 13:49  北京-小远  阅读(431)  评论(0)  编辑  收藏  举报