python3实现ftp服务功能（服务端 For Linux）

本文实例为大家分享了python3实现ftp服务功能的具体代码，供大家参考，具体内容如下

功能介绍：

可执行的命令：

ls
pwd
cd
put
rm
get
mkdir

1、用户加密认证

2、允许多用户同时登陆

3、每个用户有自己的家目录，且只可以访问自己的家目录

4、运行在自己家目录下随意切换目录

5、允许上传下载文件，且文件一致

6、传输过程中显示进度条
server main 代码：

# Author by Andy
# _*_ coding:utf-8 _*_
import os, sys, json, hashlib, socketserver, time

base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(base_dir)
from conf import userdb_set
class Ftp_server(socketserver.BaseRequestHandler):
user_home_dir = ''
def auth(self, *args):
 '''验证用户名及密码'''
 cmd_dic = args[0]
 username = cmd_dic["username"]
 password = cmd_dic["password"]
 f = open(userdb_set.userdb_set(), 'r')
 user_info = json.load(f)
 if username in user_info.keys():
  if password == user_info[username]:
   self.request.send('0'.encode())
   os.chdir('/home/％s' ％ username)
   self.user_home_dir = os.popen('pwd').read().strip()
   data = "％s login successed" ％ username
   self.loging(data)
  else:
   self.request.send('1'.encode())
   data = "％s login failed" ％ username
   self.loging(data)
   f.close
 else:
  self.request.send('1'.encode())
  data = "％s login failed" ％ username
  self.loging(data)
  f.close
  ##########################################

def get(self, *args):
 '''给客户端传输文件'''
 request_code = {
  '0': 'file is ready to get',
  '1': 'file not found!'
 }
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 filename = cmd_dic["filename"]
 if os.path.isfile(filename):
  self.request.send('0'.encode('utf-8')) # 确认文件存在
  self.request.recv(1024)
  self.request.send(str(os.stat(filename).st_size).encode('utf-8'))
  self.request.recv(1024)
  m = hashlib.md5()
  f = open(filename, 'rb')
  for line in f:
   m.update(line)
   self.request.send(line)
  self.request.send(m.hexdigest().encode('utf-8'))
  print('From server:Md5 value has been sended!')
  f.close()
 else:
  self.request.send('1'.encode('utf-8'))
  ###########################################

def cd(self, *args):
 '''执行cd命令'''
 user_current_dir = os.popen('pwd').read().strip()
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 path = cmd_dic['path']
 if path.startswith('/'):
  if self.user_home_dir in path:
   os.chdir(path)
   new_dir = os.popen('pwd').read()
   user_current_dir = new_dir
   self.request.send('Change dir successfully!'.encode("utf-8"))
   data = 'Change dir successfully!'
   self.loging(data)
  elif os.path.exists(path):
   self.request.send('Permission Denied!'.encode("utf-8"))
   data = 'Permission Denied!'
   self.loging(data)
  else:
   self.request.send('Directory not found!'.encode("utf-8"))
   data = 'Directory not found!'
   self.loging(data)
 elif os.path.exists(path):
  os.chdir(path)
  new_dir = os.popen('pwd').read().strip()
  if self.user_home_dir in new_dir:
   self.request.send('Change dir successfully!'.encode("utf-8"))
   user_current_dir = new_dir
   data = 'Change dir successfully!'
   self.loging(data)
  else:
   os.chdir(user_current_dir)
   self.request.send('Permission Denied!'.encode("utf-8"))
   data = 'Permission Denied!'
   self.loging(data)
 else:
  self.request.send('Directory not found!'.encode("utf-8"))
  data = 'Directory not found!'
  self.loging(data)
  ###########################################

def rm(self, *args):
 request_code = {
  '0': 'file exist,and Please confirm whether to rm',
  '1': 'file not found!'
 }
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 filename = cmd_dic['filename']
 if os.path.exists(filename):
  self.request.send('0'.encode("utf-8")) # 确认文件存在
  client_response = self.request.recv(1024).decode()
  if client_response == '0':
   os.popen('rm -rf ％s' ％ filename)
   self.request.send(('File ％s has been deleted!' ％ filename).encode("utf-8"))
   self.loging('File ％s has been deleted!' ％ filename)
  else:
   self.request.send(('File ％s not deleted!' ％ filename).encode("utf-8"))
   self.loging('File ％s not deleted!' ％ filename)
 else:
  self.request.send('1'.encode("utf-8"))
  ########################################

def pwd(self, *args):
 '''执行pwd命令'''
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 server_response = os.popen('pwd').read().strip().encode("utf-8")
 self.request.send(server_response)

#############################################
def ls(self, *args):
 '''执行ls命名'''
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 path = cmd_dic['path']
 cmd = 'ls -l ％s' ％ path
 server_response = os.popen(cmd).read().encode("utf-8")
 self.request.send(server_response)

############################################
def put(self, *args):
 '''接收客户端文件'''
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 filename = cmd_dic["filename"]
 filesize = cmd_dic["size"]
 if os.path.isfile(filename):
  f = open(filename + '.new', 'wb')
 else:
  f = open(filename, 'wb')
 request_code = {
  '200': 'Ready to recceive data!',
  '210': 'Not ready to received data!'
 }
 self.request.send('200'.encode())
 receive_size = 0
 while True:
  if receive_size < filesize:
   data = self.request.recv(1024)
   f.write(data)
   receive_size += len(data)
  else:
   data = "File ％s has been uploaded successfully!" ％ filename
   self.loging(data)
   print(data)
   break

################################################

def mkdir(self, *args):
 request_code = {
  '0': 'Directory has been made!',
  '1': 'Directory is aleady exist!'
 }
 cmd_dic = args[0]
 self.loging(json.dumps(cmd_dic))
 dir_name = cmd_dic['dir_name']
 if os.path.exists(dir_name):
  self.request.send('1'.encode("utf-8"))
 else:
  os.popen('mkdir ％s' ％ dir_name)
  self.request.send('0'.encode("utf-8"))

#############################################

def loging(self, data):
 '''日志记录'''
 localtime = time.asctime(time.localtime(time.time()))
 log_file = '/root/ftp/ftpserver/log/server.log'
 with open(log_file, 'a', encoding='utf-8') as f:
  f.write('％s-->' ％ localtime + data + '\n')
  ##############################################

def handle(self):
 # print("您本次访问使用的IP为:％s" ％self.client_address[0])
 # localtime = time.asctime( time.localtime(time.time()))
 # print(localtime)

while True:
  try:
   self.data = self.request.recv(1024).decode() #
   # print(self.data)
   cmd_dic = json.loads(self.data)
   action = cmd_dic["action"]
   # print("用户请求％s"％action)
   if hasattr(self, action):
    func = getattr(self, action)
    func(cmd_dic)
  except Exception as e:
   self.loging(str(e))
   break

def run():
HOST, PORT = '0.0.0.0', 6969
print("The server is started,and listenning at port 6969")
server = socketserver.ThreadingTCPServer((HOST, PORT), Ftp_server)
server.serve_forever()
if __name__ == '__main__':
run()

设置用户口令代码：

#Author by Andy
#_*_ coding:utf-8 _*_
import os,json,hashlib,sys

base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
userdb_file = base_dir+"\data\\userdb"
# print(userdb_file)
def userdb_set():
if os.path.isfile(userdb_file):
 # print(userdb_file)
 return userdb_file
else:
 print('请先为您的服务器创建用户！')
 user_data = {}
 dict={}
 Exit_flags = True
 while Exit_flags:
  username = input("Please input username:")
  if username != 'exit':
   password = input("Please input passwod:")
   if password != 'exit':
     user_data.update({username:password})
     m = hashlib.md5()
     # m.update('hello')
     # print(m.hexdigest())
     for i in user_data:
      # print(i,user_data[i])
      m.update(user_data[i].encode())
      dict.update({i:m.hexdigest()})
   else:
    break
  else:
   break
 f = open(userdb_file,'w')
 json.dump(dict,f)
 f.close()
return userdb_file

目录结构：