模拟实现一个FTP
[博客地址](http://www.cnblogs.com/mologa-jie/p/8378070.html)
1.作业需求
```
角色:ftp_s(server)、ftp_c(client)、{事例用户:miao=passwd=>miao,abu=passwd=>abu}
要求:
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
```
2.需求分析
1) 用户登录
client
'''用户加密认证''' class log_in(object): _flag=False _times = 1 def __init__(self): pass def auth(self,user): while not self._flag: # value = getpass.getpass("\033[35;1m请输入用户密码:\033[0m") #terminal 模式下支持运行,不然会直接卡主 value = input("\033[35;1m请输入用户密码:\033[0m").strip() md5_value = hashlib.md5(value.encode('utf-8')).hexdigest() new_member = (user,md5_value) new_member = str(new_member) new_member = "auth_" + new_member res = client_sock.auth_transform(new_member) if res is True: print("welcome to my ftp.py server!") self._flag = True return self._flag elif self._times < 3: self._times += 1 print("\033[31;1m密码错误,重新输入!\033[0m") continue else: print("\033[31;1m密码错误多次,请联系管理员。\033[0m") return self._flag def register(self,user): while not self._flag: # value = getpass.getpass("\033[35;1m请输入用户密码:\033[0m") value = input("\033[35;1m请输入用户密码:\033[0m").strip() # re_value = getpass.getpass("\033[35;1m请再次输入用户密码:\033[0m") re_value = input("\033[35;1m请再次输入用户密码:\033[0m").strip() if value == re_value: print("\033[34;1m注册中……!\033[0m") md5_value = hashlib.md5(value.encode('utf-8')).hexdigest() new_member = (user,md5_value) new_member = str(new_member) new_member = "register_"+new_member res = client_sock.auth_transform(new_member) if self._flag != res: return res else: print("注册失败!") continue elif self._times < 3: self._times += 1 print("\033[31;1m密码不一致,重新输入!\033[0m") continue else: print("\033[31;1m密码错误多次,请联系管理员。\033[0m") return self._flag
server
'''用户加密认证''' class log_in(object): member_list=auth.auth_file().read_file() def auth(self,args): args = eval(args) if args in self.member_list.items(): return True else: return False def register(self,args): self.member_list.update(args) auth.auth_file().write_file(self.member_list) return True
`client`展示:
------- 欢迎进入FTP ---------
1. 注册
2. 登录
3. 退出
请选择:2
请输入用户名:abu
请输入用户密码:abu
welcome to my ftp.py server!
------- abu个人空间 ---------
1. 传输文件
2. 命令交互
3. 退出
请选择:2
------- 命令行模式 ---------
1. 当前用户根目录
2. 支持常用命令{eq: ls }
3. 退出 quit
Sent: dir
Received: 驱动器 F 中的卷是 生活
卷的序列号是 1C94-79CB
F:\mologa-workspace\week_5\week-5\ftp_s\user_root\abu 的目录
2018/01/29 14:21 <DIR> .
2018/01/29 14:21 <DIR> ..
2018/01/29 14:21 4,672,137 bible.txt
1 个文件 4,672,137 字节
2 个目录 298,844,962,816 可用字节
Sent: quit
=-=-=-=-=-=-=-=-=-=-=-=-=-=退出模块=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
------- abu个人空间 ---------
1. 传输文件
2. 命令交互
3. 退出
请选择:3
终止
`server`log展示:
127.0.0.1 request
Mon Jan 29 15:50:08 2018 : abu 认证成功
127.0.0.1 request
Mon Jan 29 15:50:13 2018 : abu 执行 dir
127.0.0.1 request
Mon Jan 29 15:50:17 2018 : abu 用户退出!
2)上传、下载
client
def recvfile(user,client_command): HOST, PORT = "localhost", 8888 client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) client.connect((HOST, PORT)) action,filename = client_command.split() file_path = os.path.join(((sys.path)[-1]), "user_home") f_path = os.path.join(file_path, user) filename = os.path.join(f_path, filename) if os.path.isfile(filename): print("文件已经存在!") return "fail" msg = "file_('%s','%s')"%(user,client_command) client.send(msg.encode()) data = str(client.recv(1024),'utf-8') if data == 'ready': f = open(filename, 'wb') while True: data = client.recv(102400) if data == b'EOF': print("recv file success!") break f.write(data) f.close() return "success" else: print("文件下行错误!") return "fail" def sendfile(user,client_command): HOST, PORT = "localhost", 8888 client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) client.connect((HOST, PORT)) action, filename = client_command.split() file_path = os.path.join(((sys.path)[-1]), "user_home") f_path = os.path.join(file_path, user) filename = os.path.join(f_path, filename) if os.path.isfile(filename): msg = "file_('%s','%s')"%(user,client_command) client.send(msg.encode()) flag = client.recv(1024) if flag == b'ready': f = open(filename, 'rb') while True: data = f.read(102400) if not data: break client.sendall(data) f.close() time.sleep(1) client.sendall('EOF'.encode()) print("传输成功!") return "success" else: print("操作失败!") return "fail" else: print("文件不存在!") return "fail"
server
filename_c = (eval(args))[1] filec,filename = filename_c.split(' ') if filec == 'put': file_path = os.path.join(((sys.path)[-1]), "user_root") f_path = os.path.join(file_path, user) filename = os.path.join(f_path, filename) if os.path.isfile(filename) is False: syn = "ready" self.request.sendall(syn.encode()) f = open(filename, 'wb') while True: data = self.request.recv(102400) if data == b'EOF': break if not data: break f.write(data) f.close() time.sleep(1) print(" {} : {} {} 传输成功".format(time.ctime(), user,filename_c)) else: self.request.sendall("False".encode()) print(" {} : {} {} 传输失败".format(time.ctime(), user, filename_c)) elif filec == 'get': file_path = os.path.join(((sys.path)[-1]), "user_root") f_path = os.path.join(file_path, user) filename = os.path.join(f_path, filename) if os.path.isfile(filename) is True: syn = "ready" self.request.sendall(syn.encode()) f = open(filename, 'rb') while True: data = f.read(102400) if not data: break self.request.sendall(data) f.close() time.sleep(1) self.request.sendall('EOF'.encode()) print(" {} : {} {} 传输成功".format(time.ctime(), user, filename_c)) else: self.request.sendall("False".encode()) print(" {} : {} {} 传输失败".format(time.ctime(), user, filename_c)) else: errmsg = ("格式错误!") self.request.sendall(errmsg.encode()) print(" {} : {} {}".format(time.ctime(), user, errmsg)) pass
`client`展示:
------- 文件操作 ---------
支持任何文件格式 gz zip mp4 txt
1. 上传文件 {eq: put filename}
2. 下载文件 {eq: get filename}
3. 退出 {eq: quit}
4. 暂时不支持覆盖文件
abu #get bible.txt
recv file success!
abu #quit
=-=-=-=-=-=-=-=-=-=-=-=-=-=退出模块=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
------- abu个人空间 ---------
1. 传输文件
2. 命令交互
3. 退出
请选择:2
------- 命令行模式 ---------
1. 当前用户根目录
2. 支持常用命令{eq: ls }
3. 退出 quit
Sent: dir
Received: 驱动器 F 中的卷是 生活
卷的序列号是 1C94-79CB
F:\mologa-workspace\week_5\week-5\ftp_s\user_root\abu 的目录
2018/01/29 14:21 <DIR> .
2018/01/29 14:21 <DIR> ..
2018/01/29 14:21 4,672,137 bible.txt
1 个文件 4,672,137 字节
2 个目录 298,844,844,032 可用字节
Sent: quit
=-=-=-=-=-=-=-=-=-=-=-=-=-=退出模块=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
`server`log展示:
127.0.0.1 request
Mon Jan 29 16:06:13 2018 : abu 认证成功
127.0.0.1 request
Mon Jan 29 16:06:24 2018 : abu get bible.txt 传输成功
127.0.0.1 request
Mon Jan 29 16:06:34 2018 : abu 执行 dir
3)编码转换
def run_command(self,com): root_path = (file_path + os.sep + self.user) res = subprocess.run("%s" % com, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE,cwd=root_path) if platform.system() == "Windows": code = 'gbk' else: code = 'utf-8' if res.returncode is 0: ack = (res.stdout).decode(code) else: ack = (res.stderr).decode(code) return ack
总结备注
```
坚持学习真的很重要;
学习:
1.str,byte,gbk编码的转换和了解
2.学习了socket的端口工作原理
3.多样化数据格式定义与统一化
file:
file_(put file)
file_(get file)
command:
com_(command)
auth:
auth_('user','password')
|__login、register、auth
register_{'abc': '900150983cd24fb0d6963f7d28e17f72'}
client:
new_member = (user,md5_value)
new_member = str(new_member)
new_member = "register_"+new_member
将字典转换成元组,到server端之后统一切分之后再转换回字典
server:
key = eval(args)[0]
value = eval(args)[1]
args = {key:value}
auth_('miao', '1058a42a81e5252c76cb308bcd6a0214')
com_('miao', 'dir')
file_('miao', 'bible.txt')
通过:mode, args = msg.split('_')
分别选择模式-->执行args
```