Detailed explanation of simple FTP implementation

 

作业要示：

开发简单的FTP：
1. 用户登陆
2. 上传/下载文件
3. 不同用户家目录不同
4. 查看当前目录下文件
5. 充分使用面向对象知识

 

 

 REDMAE

 1 用户登陆 2  3 1、查看用户目录文件 4 2、上传文件, 5 3、下载方件 6 4、退出 7  8 程序结构: 9 socket_server_client/#程序目录10 |- - -clients/#client程序主目录11 |      |- - -__init__.py12 |      |- - -bin/#启用目录13 |      |       |- - - __init__.py14 |      |       |- - -socket_client.py#客户端启动15 |      |16 |      |- - -cfg/#配置文件目录17 |      |       |- - - __init__.py18 |      |       |- - -config.py#配置文件19 |      |20 |      |- - -core/#主要程序目录21 |      |       |- - - __init__.py22 |      |       |- - -client_func.py#主要函数23 |      |24 |      |- - -home/#客户端下载文件目录25 |26 |- - -servers/#server程序主目录27 |      |- - -__init__.py28 |      |- - -bin/#启用目录29 |      |       |- - - __init__.py30 |      |       |- - -registration.py#用户注册31 |      |       |- - -socket_server.py#服务端启动32 33 |      |34 |      |- - -cfg/#配置文件目录35 |      |       |- - - __init__.py36 |      |       |- - -config.py#配置文件37 |      |38 |      |- - -core/#主要程序目录39 |      |       |- - - __init__.py40 |      |       |- - -server_classc.py#主要函数41 |      |42 |      |- - -db/#用户上传文件主目录43 |              |- - -user_file/#用户上传目录44 |              |- - -user_names#注册用户文件45 |

 

服务端

servers/

　　　　bin/

registration.py

 1 #！usr/bin/env python 2 #-*-coding:utf-8-*- 3 # Author calmyan 4 import socket,os,json,sys,pickle 5  6 BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量 7 sys.path.append(BASE_DIR)#增加环境变量 8 from cfg import config 9 print('用户注册'.center(60,'='))10 while True:11     user_=input('请输入您要注册的用户名:').strip()12     user_dir=os.path.join(config.USER_DIR,user_)#拼接用户目录路径13     if os.path.isdir(user_dir):# 判断一个目录是否存在14         print('用户已经存在请重输!')15         continue16     else:17         pwd_=input('请输入密码:').strip()18         pwd_two=input('请确认密码:').strip()19         if pwd_==pwd_two:20             try:21                 os.mkdir(user_dir)#创建目录22             except Exception as e:23                 print(e)24                 continue25             finally:26                 file_dir=user_dir+'\\user'#用户目录下的用户名文件27             if  not os.path.isfile(config.USER_FILE):28                 with open(config.USER_FILE,'w',encoding='utf-8') as f:29                     f.write('{}')30             with open(config.USER_FILE,'r+',encoding='utf-8') as f:31                 data=eval(f.readline())32                 data[user_]=pwd_33                 f.seek(0)34                 f.write(str(data))35             print('用户[%s]注册成功!'%user_)36             exit()

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socket_server.py

 1 #！usr/bin/env python 2 #-*-coding:utf-8-*- 3 # Author calmyan 4 import socket,os,json 5 import sys 6 BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量 7 sys.path.append(BASE_DIR)#增加环境变量 8  9 from  core.server_class import listen_func10 s=socket.socket()#定义11 s.bind(('localhost',9000))#绑定要监听的 端口12 s.listen(5)#对列513 print('正在监听中')14 listen_func(s)

cfg/

config.py

 1 #！usr/bin/env python 2 #-*-coding:utf-8-*- 3 # Author calmyan 4 import os ,sys 5 BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量 6 sys.path.append(BASE_DIR)#增加环境变量 7  8  9 USER_DIR=BASE_DIR+'\db\\user_file\\'#定义用户目录文件路径变量10 11 USER_FILE=BASE_DIR+'\db\\user_names'#定义用户文件路径变量

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core/

server_class.py

  1 #！usr/bin/env python  2 #-*-coding:utf-8-*-  3 # Author calmyan  4 import socket,os,json,sys,pickle  5   6 BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量  7 sys.path.append(BASE_DIR)#增加环境变量  8   9 from cfg import config 10  11  12 #用户名检测函数 13 def open_file_list(name,pas):#传入当前类 14     with open(config.USER_FILE,'r',encoding='utf-8') as f: 15         data=eval(f.readline()) 16         if name in data and pas==data[name]: 17             return True 18         else: 19             return False 20  21  22 #连接类 23 class socket_server(object): 24     '''连接类''' 25     file_path=config.USER_DIR#用户路经变量 26     def __init__(self,data,conn):#传入用户名,密码 27         self.DATA=data 28         self.conn=conn 29  30  31     def show_process(self,lens): 32         received_size=0#定义大小 33         current_percent=0#当前大小百分比 34         while received_size<lens: 35             if int((received_size/lens)*100)>current_percent: 36                 print('#',end='',flush=True) 37                 current_percent=int((received_size/lens)*100) 38             new_size=yield 39             received_size+=new_size 40  41     def ret_l(self): 42         ret=socket_server.login(self.DATA["name"],self.DATA['pwd'],self.conn)#用户名检测 43         return ret 44     def open_f(self,ret):#打开目录 45         file_dir=os.path.join(socket_server.file_path,ret['data']['user'])#用户目录 46         file_name=os.listdir(file_dir)#目录文件列表 47         f=file_dir+self.DATA['filename']##上传的文件名 48         return file_dir,file_name,f#返回 49  50     def ls_file(self,data):#查看文件 51         self.conn.send(json.dumps(data[1]).encode()) 52  53     def send_file(self,data): 54  55         if self.DATA['filename'] in data[1]: 56             f=data[0]+'/'+self.DATA['filename'] 57             file_obj=open(f,"rb")#打开文件 58             name=file_obj.name.split('/')[-1]#文件名 59             sez=os.path.getsize(f)#获取文件大小 60             print(sez) 61             data_header={ 62                     "action":"put", 63                     "filename":name, 64                     "size":sez 65                     } 66             self.conn.send(json.dumps(data_header).encode())#用json 序列化后,发送相关 信息 67             for line in file_obj: 68                 self.conn.send(line)#发送数据 69  70         elif self.DATA['filename'].isdigit(): 71             num=int(self.DATA['filename'])#转为数字 72             try: 73                 f=data[0]+'/'+data[1][num]# 74                 file_obj=open(f,"rb")#打开文件 75                 name=file_obj.name.split('/')[-1]#文件名 76                 sez=os.path.getsize(f)#获取文件大小 77                 print(sez) 78                 data_header={ 79                 "action":"put", 80                 "filename":name, 81                 "size":sez 82                 } 83                 self.conn.send(json.dumps(data_header).encode())#用json 序列化后,发送相关 信息 84                 for line in file_obj: 85                     self.conn.send(line)#发送数据 86                 self.conn.send(json.dumps(f).encode())#发送文件 87             except Exception as e: 88                 data={'filename':False} 89                 self.conn.send(json.dumps(data).encode()) 90         else: 91             data={'filename':False} 92             self.conn.send(json.dumps(data).encode()) 93     def put_file(self,data):#上传文件 94         file_obj=open(data[2],'wb')#打开新建 这个文件 95         rece_size=0#定义 文件大小值 96         #prten=socket_server.show_process(self.DATA["size"]) 97         #prten.__next__() 98         while rece_size<self.DATA["size"]:#小于接收的文件大小时, 99             recv_data=self.conn.recv(4096)100             file_obj.write(recv_data)#写入文件101             rece_size+=len(recv_data)#增加文件大小计算102 103         else:104             print("文件[%s]接收完毕!"%self.DATA["filename"])105             file_obj.flush()106             file_obj.close()#关闭文件107 108 109     @staticmethod110     def login(name,pas,conn):#用户检测 函数111         try:112             if open_file_list(name,pas):113                 tag=True114                 error=&#39;&#39;115                 datas={&#39;user&#39;:name}116                 data={&#39;mag&#39;:&#39;用户认证通过&#39;,&#39;tag&#39;:True}117                 print(json.dumps(data).encode())118                 conn.send(json.dumps(data).encode())119             else:120                 raise Exception(&#39;\033[41;1m用户名或密码错误\033[0m&#39; %name)121         except Exception as e:122             tag=False123             error=str(e)124             datas=&#39;&#39;125             data={&#39;mag&#39;:&#39;用户或密码错误&#39;,&#39;tag&#39;:False}126             print(&#39;发送数据%s&#39;%data)127             conn.send(json.dumps(data).encode())128         return {&#39;tag&#39;:tag,&#39;error&#39;:error,&#39;data&#39;:datas}129 130 #监听函数131 def listen_func(s):132     while True:133         conn,client_addr=s.accept()#端口监听中....返回两个值 ,联接编号对象 , ip134         print(&#39;获取到新连接:&#39;,client_addr)135         while True:136             data=conn.recv(4096)#接收数据 指令137             print(&#39;接收的数据:&#39;,data)138             data= json.loads(data.decode())#反序列139             if len(data)==0:140                 break141             if data[&#39;action&#39;]==&#39;user&#39;:#如果是用户名,进行认证\142                 serv=socket_server(data,conn)143                 ret=serv.ret_l()144             if ret[&#39;tag&#39;]:145                 pass146             else:147                 continue148 149             print(data)150             if data[&#39;action&#39;]=="put":#如果接收的字典中是put,就是进行接收151                 serv=socket_server(data,conn)152                 serv.put_file(serv.open_f(ret))#调对象方法153             elif data[&#39;action&#39;]==&#39;get&#39;:#下载154                 serv=socket_server(data,conn)#实例化155                 serv.send_file(serv.open_f(ret))#调 用方法156             elif data[&#39;action&#39;]==&#39;ls&#39;:#查看157                 serv=socket_server(data,conn)158                 serv.ls_file(serv.open_f(ret))159                 continue

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客户端

clients/

bin/

socket_client.py

  1 #！usr/bin/env python  2 #-*-coding:utf-8-*-  3 # Author calmyan  4   5 import socket,os,json,sys  6 BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量  7 sys.path.append(BASE_DIR)#增加环境变量  8 from core.client_func import user_pwd  9 #from core.client_func import show_process 10 from cfg import config 11  12 #进度条 13 def show_process(lens): 14     received_size=0#定义大小 15     current_percent=0#当前大小百分比 16     while received_size<lens: 17         if int((received_size/lens)*100)>current_percent: 18             print('#',end='',flush=True) 19             current_percent=int((received_size/lens)*100) 20         new_size=yield 21         received_size+=new_size 22  23  24 client=socket.socket() 25 client.connect(('localhost',9000)) 26 while True: 27     data_d=user_pwd(client) 28     if data_d['tag']:#运行#用户名登陆成功 29         while True: 30             print('''=====指令提示==== 31             查看目录文件: ls 32             下载文件: get 文件名 或 文件编号  如: get test.txt  或  get 1 33             上传方件: put 路径/文件名 如 put e:/test.txt 34             退出：exit 35             ''') 36             cho=input('指令 >>:').strip() 37             if len(cho)==0:continue 38             if cho=='exit':exit()#退出指令 39             cmd_list=cho.split() 40             if cmd_list[0]=='put':#如果等于下载指令 41                 if len(cmd_list)==1: 42                     print('没有输入相关文件名') 43                     continue 44                 filename=cmd_list[1] 45                 if os.path.isfile(filename):#如果文件存在 46                     file_obj=open(filename,"rb")#打开文件 47                     name=file_obj.name.split('/')[-1]#文件名 48                     #name=filename.split("\\")[-1]#文件名 49                     sez=os.path.getsize(filename)#获取文件大小 50                     data_header={ 51                         "action":"put", 52                         "filename":name, 53                         "size":sez 54                     } 55                     client.send(json.dumps(data_header).encode())#用json 序列化后,发送相关 信息 56  57                     print("文件[%s]发送中...."%data_header["filename"]) 58                     for line in file_obj: 59                         client.send(line) 60                     else: 61                         print("文件[%s]发送完毕!"%data_header["filename"]) 62                 else: 63                     print('该文件不存在') 64                     continue 65             elif cmd_list[0]=='get':#如查等 于上传指令 66                 if len(cmd_list)==1: 67                     print('没有输入相关文件名') 68                     continue 69                 filename=cmd_list[1] 70                 print(filename) 71                 data_header={ 72                         "action":"get", 73                         "filename":filename, 74                         "size":'' 75                     } 76                 client.send(json.dumps(data_header).encode())#用json 序列化后,发送相关 信息 77                 datas=client.recv(4096)#接收数据 指令 78                 data_l= json.loads(datas.decode())#反序列 79                 if  not data_l['filename']: 80                     print('文件不存在') 81                     continue 82                 file_dir=config.USER_DIR+data_l["filename"] 83                 file_obj=open(file_dir,'wb')#打开新建 这个文件 84                 rece_size=0#定义 文件大小值 85                 prten=show_process(data_l["size"]) 86                 prten.__next__() 87                 while rece_size<data_l["size"]:#小于接收的文件大小时, 88                     recv_data=client.recv(4096) 89                     file_obj.write(recv_data)#写入文件 90                     rece_size+=len(recv_data)#增加文件大小计算 91                     try: 92                         prten.send(len(recv_data)) 93                     except StopIteration as e: 94                         print(&#39;100%&#39;) 95  96                 else: 97                     print("文件[%s]接收完毕!"%data_l["filename"]) 98                     file_obj.flush() 99                     file_obj.close()#关闭文件100             elif cmd_list[0]==&#39;ls&#39;:#查看目录文件101                 data_header={102                         "action":"ls",103                         "filename":&#39;&#39;,104                         "size":&#39;&#39;105                     }106                 client.send(json.dumps(data_header).encode())#用json 序列化后,发送相关 信息107                 datas=client.recv(4096)#接收数据 指令108                 data_l= json.loads(datas.decode())#反序列109                 for k,v in enumerate(data_l):110                     print(&#39;编号: %s  文件名:%s&#39;%(k,v))111 112     else:113         print(data_d[&#39;mag&#39;])

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cfg/

config.py

 1 #！usr/bin/env python 2 #-*-coding:utf-8-*- 3 # Author calmyan 4  5 import os ,sys 6 BASE_DIR=os.path.dirname(os.path.dirname(os.path.abspath(__file__)))#获取相对路径转为绝对路径赋于变量 7 sys.path.append(BASE_DIR)#增加环境变量 8  9 10 USER_DIR=BASE_DIR+'\home\\'#定义用户目录文件路径变量

core/

client_func.py

 1 #！usr/bin/env python 2 #-*-coding:utf-8-*- 3 # Author calmyan 4 import socket,os,json,sys 5 #用户名登陆函数 6 def user_pwd(client): 7     user_=input(&#39;请输入用户名:&#39;).strip() 8     pwd_=input(&#39;请输入密码:&#39;).strip() 9     data_header={10                 "action":"user",11                 "name":user_,12                 "pwd":pwd_13             }14     client.send(json.dumps(data_header).encode())#用json 序列化后,发送相关 信息15     data=client.recv(4096)#接收数据 指令16     data_s=json.loads(data.decode(&#39;utf-8&#39;))#反序列17     return data_s18 19 20 #进度条21 def show_process(lens):22     received_size=0#定义大小23     current_percent=0#当前大小百分比24     while received_size<lens:25         if int((received_size/lens)*100)>current_percent:26             print('#',end='',flush=True)27             current_percent=int((received_size/lens)*100)28         new_size=yield29         received_size+=new_size

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