python实现可以断点续传和并发的ftp程序

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
 
BASE_DIR = os.path.dirname(os.path.dirname(__file__)) #配置文件的上层目录
NEW_FILENAME=os.path.join(BASE_DIR,'view')       #新文件目录
NAME_PWD=os.path.join(BASE_DIR,'db','name_pwd')    #用户名和密码目录
USER_FILE=os.path.join(BASE_DIR,'db')

#!/usr/bin/env python
# -*- coding: utf-8 -*-
 
import sys,os
import time
import socket
import hashlib
import pickle
import subprocess
import socketserver
sys.path.append(os.path.dirname(os.path.dirname(__file__)))
from config import settings
 
 
new=settings.NEW_FILENAME
class Myserver(socketserver.BaseRequestHandler):
 
  def recv_file(self):
    '''
    文件传输
    :return:
    '''
    conn=self.request
    a=str(conn.recv(1024),encoding='utf-8')
    file_size,file_name=a.split(',')
    new_file_name=os.path.join(new,file_name)
    if file_name in new:      #检测文件是否已存在，涉及断点续传
      has_recv=os.stat(new).st_size #计算临时文件大小
      conn.sendall(bytes(has_recv,encoding='utf-8'))
      with open(new_file_name,'ab') as f: #追加模式
        while has_recv<=int(file_size):
          data=conn.recv(1024)
          f.write(data)
          has_recv+=len(data)
    else:
      has_recv=0
      conn.sendall(bytes('s',encoding='utf-8')) # 客户端收到字符串s，从0开始发送
      with open(new_file_name,'wb') as f:
        while has_recv<=int(file_size):
          data=conn.recv(1024)
          f.write(data)
          has_recv+=len(data)
 
  def command(self):
    '''
    执行命令
    :return:
    '''
    conn=self.request
    a=conn.recv(1024)
    ret=str(a,encoding='utf-8')
    ret2 = subprocess.check_output(ret, shell=True)
    r=divmod(len(ret2),1024)
    s=r[0]+1     #客户端需要接收的次数
    conn.sendall(bytes(str(s),encoding='utf-8'))
    conn.recv(1024) #确认客户端收到需要接收的次数
 
    conn.sendall(ret2)
 
  def md5(self,pwd):
    '''
    对密码进行加密
    :param pwd: 密码
    :return:
    '''
    hash=hashlib.md5(bytes('xx7',encoding='utf-8'))
    hash.update(bytes(pwd,encoding='utf-8'))
    return hash.hexdigest()
 
 
  def login(self,usrname,pwd):
    '''
    登陆
    :param usrname: 用户名
    :param pwd: 密码
    :return:是否登陆成功
    '''
    conn=self.request
    s=pickle.load(open(settings.NAME_PWD,'rb'))
    if usrname in s:
       if s[usrname]==self.md5(pwd):    #和加密后的密码进行比较
        return True
       else:
        return False
    else:
      return False
 
 
  def regist(self,usrname,pwd):
    '''
    注册
    :param usrname: 用户名
    :param pwd: 密码
    :return:是否注册成功
    '''
 
    conn=self.request
    s=pickle.load(open(settings.NAME_PWD,'rb'))
    if usrname in s:
       return False
    else:
      s[usrname]=self.md5(pwd)
      mulu=os.path.join(settings.USER_FILE,usrname)
      os.makedirs(mulu,'a')
      pickle.dump(s,open(settings.NAME_PWD,'wb'))
      return True
 
  def before(self,usrname,pwd,ret):
    '''
    判断注册和登陆，并展示用户的详细目录信息，支持cd和ls命令
    :return:
    '''
    conn=self.request
    if ret=='1':
      r=self.login(usrname,pwd)
      if r:
        conn.sendall(bytes('y',encoding='utf-8'))
      else:
        conn.sendall(bytes('n',encoding='utf-8'))
    elif ret=='2':
      # print(usrname,pwd)
      r=self.regist(usrname,pwd)
      if r:
        conn.sendall(bytes('y',encoding='utf-8'))
      else:
        conn.sendall(bytes('n',encoding='utf-8'))
  def usr_file(self,usrname):
    '''
    展示用户的详细目录信息，支持cd和ls命令
    :param usrname: 用户名
    :return:
    '''
    conn=self.request
    conn.recv(1024)
    mulu=os.path.join(settings.USER_FILE,usrname)
    conn.sendall(bytes(mulu,encoding='utf-8'))
    while True:
      b=conn.recv(1024)
      ret=str(b,encoding='utf-8')
      try:
        a,b=ret.split(' ',1)
      except Exception as e:
        a=ret
      if a=='cd':
        if b=='..':
          mulu=os.path.dirname(mulu)
        else:
          mulu=os.path.join(mulu,b)
        conn.sendall(bytes(mulu,encoding='utf-8'))
      elif a=='ls':
        ls=os.listdir(mulu)
        print(ls)
        a=','.join(ls)
        conn.sendall(bytes(a,encoding='utf-8'))
      elif a=='q':
        break
 
 
  def handle(self):
    conn=self.request
    conn.sendall(bytes('welcome',encoding='utf-8'))
    b=conn.recv(1024)
    ret=str(b,encoding='utf-8')
    print(ret)
    conn.sendall(bytes('b ok',encoding='utf-8'))
    c=conn.recv(1024)
    r=str(c,encoding='utf-8')
    usrname,pwd=r.split(',')
    self.before(usrname,pwd,ret) #登陆或注册验证
    self.usr_file(usrname) #展示用户的详细目录信息，支持cd和ls命令
    while True:
      a=conn.recv(1024)
      conn.sendall(bytes('收到a',encoding='utf-8'))
      ret=str(a,encoding='utf-8')
      if ret=='1':
        self.recv_file()
        # conn.sendall(bytes('file ok',encoding='utf-8'))
      elif ret=='2':
        self.command()
      elif ret=='q':
        break
      else:
        pass
 
if __name__=='__main__':
  sever=socketserver.ThreadingTCPServer(('127.0.0.1',9999),Myserver)
  sever.serve_forever()

#!/usr/bin/env python
# -*- coding: utf-8 -*-
 
import sys
import time
import os
import socket
sys.path.append(os.path.dirname(os.path.dirname(__file__)))
from config import settings
 
 
 
def send_file(file_path):
  '''
  发送文件
  :param file_name:文件名
  :return:
  '''
  size=os.stat(file_path).st_size
  file_name=os.path.basename(file_path)
  obj.sendall(bytes(str(size)+','+file_name,encoding='utf-8')) #发送文件大小和文件名
  ret=obj.recv(1024)  #接收已经传了多少
  r=str(ret,encoding='utf-8')
  if r=='s': #文件不存在，从头开始传
    has_send=0
  else:  #文件存在
    has_send=int(r)
 
  with open(file_path,'rb') as f:
    f.seek(has_send) #定位到已经传到的位置
    while has_send<size:
      data=f.read(1024)
      obj.sendall(data)
      has_send+=len(data)
      sys.stdout.write('\r') #清空文件内容
      time.sleep(0.2)
      sys.stdout.write('已发送%s%%|%s' %(int(has_send/size*100),(round(has_send/size*40)*'★')))
      sys.stdout.flush()  #强制刷出内存
    print("上传成功\n")
 
def command(command_name):
  '''
  执行命令
  :param command_name:
  :return:
  '''
  obj.sendall(bytes(command_name,encoding='utf-8'))
  ret=obj.recv(1024) #接收命令需要接收的次数
  obj.sendall(bytes('收到次数',encoding='utf-8'))
  r=str(ret,encoding='utf-8')
  for i in range(int(r)): #共需要接收int(r)次
    ret=obj.recv(1024) #等待客户端发送
    r=str(ret,encoding='GBK')
    print(r)
 
def login(usrname,pwd):
  '''
  登陆
  :param usrname:用户名
  :param pwd:密码
  :return:是否登陆成功
  '''
  obj.sendall(bytes(usrname+','+pwd,encoding='utf-8'))
  ret=obj.recv(1024)
  r=str(ret,encoding='utf-8')
  if r=='y':
    return 1
  else:
    return 0
 
def regist(usrname,pwd):
  '''
  注册
  :param usrname:用户名
  :param pwd:密码
  :return:是否注册成功
  '''
  obj.sendall(bytes(usrname+','+pwd,encoding='utf-8'))
  ret=obj.recv(1024)
  r=str(ret,encoding='utf-8')
  if r=='y':
    return 1
  else:
    return 0
def before(usrname,pwd):
  '''
  选择登陆或注册，展示用户的详细目录信息，支持cd和ls命令
  :return:
  '''
  a=input('请选择1.登陆 2.注册')
  obj.sendall(bytes(a,encoding='utf-8'))
  obj.recv(1024)
  if a=='1':
    ret=login(usrname,pwd)
    if ret:
      print('登陆成功')
      return 1
    else:
      print('用户名或密码错误')
      return 0
  elif a=='2':
    ret=regist(usrname,pwd)
    if ret:
      print('注册成功')
      return 1
    else:
      print('用户名已存在')
      return 0
def usr_file(usrname):
  obj.sendall(bytes('打印用户文件路径',encoding='utf-8'))
  ret=obj.recv(1024) #等待客户端发送
  r=str(ret,encoding='utf-8')
  print(r)
  while True:
    a=input('输入cd切换目录，ls查看目录详细信息，q退出>:')
 
    obj.sendall(bytes(a,encoding='utf-8'))
    if a=='q':
      break
    else:
      ret=obj.recv(1024) #等待客户端发送
      r=str(ret,encoding='utf-8')
      if len(r)==1:#判断是cd结果还是ls的结果（ls只有一个子目录也可以直接打印）
        print(r)
      else:
        li=r.split(',')
        for i in li:
          print(i) #打印每一个子目录
 
def main(usrname,pwd):
  ret=obj.recv(1024) #等待客户端发送
  r=str(ret,encoding='utf-8')
  print(r)
  result=before(usrname,pwd)#登陆或注册
  if result:
    usr_file(usrname)
    while True:
      a=input('请选择1.传文件 2.执行命令 q退出:')
      obj.sendall(bytes(str(a),encoding='utf-8'))
      ret=obj.recv(1024) #确认是否收到a
      r=str(ret,encoding='utf-8')
      print(r)
      if a=='1':
        b=input('请输入文件路径（测试版路径为：f.png）:')
        # b='f.png'
        if os.path.exists(b):
          send_file(b)
          obj.sendall(bytes('hhe',encoding='utf-8'))
          # obj.recv(1024)
      elif a=='2':
        b=input('请输入command:')
        command(b)
      elif a=='q':
        break
      else:
        print('输入错误')
 
  obj.close()
 
if __name__ == '__main__':
  obj=socket.socket() #创建客户端socket对象
  obj.connect(('127.0.0.1',9999))
  usrname=input('请输入用户名')
  pwd=input('请输入密码')
  main(usrname,pwd)