| Python之路【第十五篇】开发FTP多线程程序 | 您所在的位置：网站首页 › python ftp 多线程下载 › Python之路【第十五篇】开发FTP多线程程序 |
Python之路【第十五篇】开发FTP多线程程序
|
要求：
1.用户加密认证
2.允许同时多用户登录
3.每个用户有自己的家目录，且只能访问自己的家目录
4.对用户进行磁盘配额，每个用户的可用空间不同
5.允许用户在ftp server上随意切换目录
6.允许用户查看当前目录下的文件
7.允许上传和下载文件，并保证文件的一致性md5
8.文件传输过程中显示进度条
9.支持文件的断点续传
使用：1.启动ftp_server.py2.创建用户，输入:用户名（默认密码是zhurui）3.启动FTP服务器4.启动客户端ftp_client.py5.输入用户名和密码:alex zhurui | william zhurui6.与服务器server交互：
server服务端 bin下的文件 ftp_server.py #_*_ coding:utf-8 _*_ #Author :simon import os import sys BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) sys.path.append(BASE_DIR) from core.main import Manager if __name__ == '__main__': Manager().run() conf下的文件accounts.ini（这个可以在执行中创建） [william] password = 39da56d2e7a994d38b9aaf329640fc6e homedir = home/william quota = 10 [zhurui] password = 39da56d2e7a994d38b9aaf329640fc6e homedir = home/zhurui quota = 10 [simon] password = 39da56d2e7a994d38b9aaf329640fc6e homedir = home/simon quota = 10settings.py #_*_ coding:utf-8 _*_ # Author:Simon # Datetime:2019/8/14 11:00 # Software:PyCharm import os BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) ACCOUNTS_FILE = os.path.join(BASE_DIR, 'conf', 'accounts.ini') HOST = '127.0.0.1' PORT = 8080 MAX_CONCURRENT_COUNT = 10 core下的文件main.py # _*_ coding:utf-8 _*_ #Author:Simon from core.user_handle import UserHandle from core.server import Ftpserver class Manager(): def __init__(self): pass def start_ftp(self): '''启动ftp_server端''' server = Ftpserver() server.run() server.close() def create_user(self): '''创建用户''' username = input('请输入要创建的用户>:').strip() UserHandle(username).add_user() def quit_func(self): quit('get out...') def run(self): msg = '''\033[31;0m 1、启动ftp服务器 2、创建用户 3、退出\033[0m\n ''' msg_dic = {'1': 'start_ftp', '2': 'create_user', '3': 'quit_func'} while True: print(msg) num = input('请输入数字num>>>>:').strip() if num in msg_dic: getattr(self,msg_dic[num])() else: print('\033[1;31m请重新选择\033[0m')server.py #-*- coding:utf-8 -*- # Author:Simon # Datetime:2019/8/13 21:02 # Software:PyCharm import os import socket import struct import pickle import hashlib import subprocess import queue from conf import settings # from core.user_handle import UserHandle from core.user_handle import UserHandle from threading import Thread, Lock class Ftpserver(): MAX_SOCKET_LISTEN = 5 MAX_RECV_SIZE = 8192 def __init__(self): self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.socket.bind((settings.HOST, settings.PORT)) self.socket.listen(self.MAX_SOCKET_LISTEN) self.q = queue.Queue(settings.MAX_CONCURRENT_COUNT) # 可以配置最大并发数 def server_accept(self): '''等待client连接''' print('starting...') while True: self.conn,self.client_addr = self.socket.accept() print('客户端地址:', self.client_addr) #pool.submit(self.get_recv, self.conn) #self.server_accept.close() try: # t = Thread(target=self.server_handle, args=(self.conn, )) #报这个错(TypeError: server_handle() takes 1 positional argument but 2 were given) t = Thread(target=self.server_handle(), args=(self.conn, )) self.q.put(t) t.start() except Exception as e: print(e) self.conn.close() self.q.get() def get_recv(self): '''接收client发来的数据''' return pickle.loads(self.conn.recv(self.MAX_RECV_SIZE)) def auth(self): '''处理用户的认证请求 1、根据username读取accounts.ini文件，password相比，判断用户是否存在 2、将程序运行的目录从bin/ftp_server.py修改到用户home/alice,方便之后查询ls 3、给client返回用户的详细信息 ''' while True: user_dic = self.get_recv() username = user_dic.get('username') user_handle = UserHandle(username) user_data = user_handle.judge_user() # 判断用户是否存在，返回列表 # 如[('password','202cb962ac59075b964b07152d234b70'),('homedir','home/alex'),('quota','100')] if user_data: if user_data[0][1] == hashlib.md5(user_dic.get('password').encode('utf-8')).hexdigest(): # 密码也相同 self.conn.send(struct.pack('i', 1)) #登录成功返回 self.username = username self.homedir_path = '%s %s %s' %(settings.BASE_DIR, 'home', self.username) os.chdir(self.homedir_path) #将程序运行的目录名修改到用户home目录下 self.quota_bytes = int(user_data[2][1]) * 1024 * 1024 #将用户配额大小从M改到字节 user_info_dic = { 'username': username, 'homedir': user_data[1][1], 'quota': user_data[2][1] } self.conn.send(pickle.dumps(user_info_dic)) #用户的详细信息发送到客户端 return True else: self.conn.send(struct.pack('i', 0)) else: self.conn.send(struct.pack('i', 0)) def readfile(self): '''读取文件，得到文件内容的bytes型''' with open(self.filepath, 'rb') as f: filedata = f.read() return filedata def getfile_md5(self): '''对文件内容md5''' return hashlib.md5(self.readfile()).hexdigest() def get(self): '''从server下载文件到client ''' if len(self.cmds) > 1: filename = self.cmds[1] filepath = os.path.join(os.getcwd(),filename) #os.getcwd()得到当前工作目录 if os.path.isfile(filepath): #判断文件是否存在 exist_file_size = struct.unpack('i', self.conn.recv(4))[0] self.filepath = filepath header_dic = { 'filename': filename, 'file_md5': self.getfile_md5(), 'file_size': os.path.getsize(self.filepath) } header_bytes = pickle.dumps(header_dic) if exist_file_size: #表示之前被下载过一部分 self.conn.send(struct.pack('i', len(header_bytes))) self.conn.send(header_bytes) if exist_file_size != os.path.getsize(self.filepath): with open(self.filepath, 'rb') as f: f.seek(exist_file_size) for line in f: self.conn.send(line) else: print('断电和文件本身大小一样') else: #文件第一次下载 self.conn.send(struct.pack('i', len(header_bytes))) self.conn.send(header_bytes) with open(self.filepath, 'rb') as f: for line in f: self.conn.send(line) else: print('当前目录下文件不存在') self.conn.send(struct.pack('i',0)) else: print('用户没用输入文件名') def recursion_file(self,menu): '''递归查询用户home/alice目录下的所有文件，算出文件的大小''' res = os.listdir(menu) #指定目录下所有的文件和目录名 for i in res: path = '%s %s' % (menu, i) if os.path.isdir(path): #判断指定对象是否为目录 self.recursion_file(path) elif os.path.isfile(path): self.home_bytes_size += os.path.getsize(path) def current_home_size(self): '''得到当前用户home/alice目录的大小，字节/M''' self.home_bytes_size = 0 self.recursion_file(self.homedir_path) print('字节：', self.home_bytes_size) # 单位是字节 home_m_size = round(self.home_bytes_size / 1024 /1024, 1) print('单位M:', home_m_size) #单位是: M def put(self): '''从client上传文件到server当前工作目录下''' if len(self.cmds) > 1: state_size = struct.unpack('i',self.conn.recv(4))[0] if state_size: self.current_home_size() #算出了home下已被占用的大小self.home_bytes_size header_bytes = self.conn.recv(struct.unpack('i', self.conn.recv(4))[0]) header_dic = pickle.loads(header_bytes) print(header_dic) filename = header_dic.get('filename') file_size = header_dic.get('file_size') file_md5 = header_dic.get('file_md5') upload_filepath = os.path.join(os.getcwd(), filename) self.filepath = upload_filepath #为了全局变量读取文件算md5时方便 if os.path.exists(upload_filepath): #文件已经存在 self.conn.send(struct.pack('i', 1)) has_size = os.path.getsize(upload_filepath) if has_size == file_size: print('文件已经存在') self.conn.send(struct.pack('i', 0)) else: #上次没有传完，接着继续传 self.conn.send(struct.pack('i', 1)) if self.home_bytes_size + int(file_size - has_size) > self.quota_bytes: print('超出了用户的配额') self.conn.send(struct.pack('i', 0)) else: self.conn.send(struct.pack('i',1)) self.conn.send(struct.pack('i', has_size)) with open(upload_filepath, 'ab') as f: f.seek(has_size) while has_size self.quota_bytes: print('\033[1;32m超出了用户的配额\033[0m') self.conn.send(struct.pack('i', 0)) else: self.conn.send(struct.pack('i', 1)) with open(upload_filepath, 'wb') as f: recv_size = 0 while recv_size 1: mkdir_path = os.path.join(os.getcwd(),self.cmds[1]) if not os.path.exists(mkdir_path): #查看目录名是否存在 os.mkdir(mkdir_path) print('增加目录成功') self.conn.send(struct.pack('i', 1)) #增加目录成功，返回1 else: print('目录名已存在') self.conn.send(struct.pack('i', 0)) #失败返回0 else: print('用户没有输入目录名') def cd(self): '''切换目录''' if len(self.cmds) > 1: dir_path = os.path.join(os.getcwd(), self.cmds[1]) if os.path.isdir(dir_path) :#查看是否是目录名 previous_path = os.getcwd() #拿到当前工作的目录 os.chdir(dir_path) #改变工作目录到 . . . target_dir = os.getcwd() if self.homedir_path in target_dir: #判断homedir_path是否在目标目录 print('切换成功') self.conn.send(struct.pack('i', 1)) #切换成功返回1 else: print('切换失败') #切换失败后，返回到之前的目录下 os.chdir(previous_path) self.conn.send(struct.pack('i', 0)) else: print('要切换的目录不在该目录下') self.conn.send(struct.pack('i', 0)) else: print('没有传入切换的目录名') def remove(self): '''删除指定的文件，或者空文件夹''' if len(self.cmds) > 1: file_name = self.cmds[1] file_path = '%s\%s' %(os.getcwd(), file_name) if os.path.isfile(file_path): os.remove(file_path) self.conn.send(struct.pack('i', 1)) elif os.path.isdir(file_path): #删除空目录 if not len(os.listdir(file_path)): os.removedirs(file_path) print('删除成功') self.conn.send(struct.pack('i', 1)) else: print('文件夹非空，不能删除') self.conn.send(struct.pack('i', 0)) else: print('不是文件也不是文件夹') self.conn.send(struct.pack('i', 0)) else: print('没有输入要删除的文件') def server_handle(self): '''处理与用户的交互指令''' if self.auth(): print('\033[1;32m用户登陆成功\033[0m') while True: try: #try ...except 适合windows client断开 user_input = self.conn.recv(self.MAX_RECV_SIZE).decode('utf-8') # if not user_input: continue #这里适合 linux client断开 self.cmds = user_input.split() if hasattr(self,self.cmds[0]): getattr(self,self.cmds[0])() else: print('\033[1;31请用户重复输入\033[0m') except Exception: break def run(self): self.server_accept() def close(self): self.socket.close() #if __name__ == '__main__': #pool = ThreadPoolExecutor(10)user_handle.py #_*_ coding:utf-8 _*_ # Author:Simon # Datetime:2019/8/14 10:26 # Software:PyCharm import configparser import hashlib import os from conf import settings class UserHandle(): def __init__(self,username): self.username= username self.config = configparser.ConfigParser() #先生成一个对象 self.config.read(settings.ACCOUNTS_FILE) @property def password(self): '''生成用户的默认密码 zhurui''' return hashlib.md5('zhurui'.encode('utf-8')).hexdigest() @property def quota(self): '''生成每个用户的磁盘配额''' quota = input('请输入用户的磁盘配额大小>>>:').strip() if quota.isdigit(): return quota else: exit('\033[1;31m磁盘配额必须是整数\033[0m') def add_user(self): '''创建用户，存到accounts.ini''' if not self.config.has_section(self.username): print('creating username is : ', self.username) self.config.add_section(self.username) self.config.set(self.username, 'password', self.password) self.config.set(self.username, 'homedir', 'home/'+self.username) self.config.set(self.username, 'quota', self.quota) with open(settings.ACCOUNTS_FILE, 'w') as f: self.config.write(f) os.mkdir(os.path.join(settings.BASE_DIR, 'home', self.username)) #创建用户的home文件夹 print('\033[1;32m创建用户成功\033[0m') else: print('\033[1;32m用户已存在\033[0m') def judge_user(self): '''判断用户是否存在''' if self.config.has_section(self.username): return self.config.items(self.username) else: return client客户端download文件是储存下载的文件；upload是上传文件的储存库（download里边可以不放东西，等待下载即可；upload里边放你准备上传给服务端的文件） ftp_client.py #_*_ coding:utf-8 _*_ # Author:Simon # Datetime:2019/8/14 11:12 # Software:PyCharm import os import sys import socket import struct import pickle import hashlib class Ftpclient(): HOST = '127.0.0.1' #服务器IP PORT = 8080 #服务端的端口 MAX_RECV_SIZE = 8192 DOWNLOAD_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'download') UPLOAD_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'upload') def __init__(self): self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.connect() def connect(self): '''连接服务端server''' try: self.socket.connect((self.HOST, self.PORT)) except Exception: exit('\033[1;31mserver还未启动\033[0m') def get_recv(self): '''获取server返回的数据''' return pickle.loads(self.socket.recv(self.MAX_RECV_SIZE)) def auth(self): '''用户认证''' count = 0 while count < 3: name = input('请输入用户名>>:').strip() if not name: continue password = input('请输入密码>>:').strip() user_dic = { 'username':name, 'password':password } self.socket.send(pickle.dumps(user_dic)) #把用户名和密码发送给server res = struct.unpack('i',self.socket.recv(4))[0] if res: #接收返回的信息，并判断 print('welcome'.center(20,'-')) user_info_dic = self.get_recv() self.username = user_info_dic.get('username') print(user_info_dic) return True else: print('\033[1;31m用户名或者密码不对！\033[0m') count += 1 def readfile(self): '''读取文件，得到的文件内容的bytes型''' with open(self.filepath, 'rb') as f: filedata = f.read() return filedata def getfile_md5(self): '''对文件内容md5''' return hashlib.md5(self.readfile()).hexdigest() def progress_bar(self, num, get_size, file_size): '''进度条显示''' float_rate = get_size / file_size # rate = str(float_rate * 100)[:5] # 95.85% rate = round(float_rate * 100,2) # 95.85% if num == 1: #1表示下载 sys.stdout.write('\r已下载:\033[1;32m{0}%\033[0m'.format(rate)) elif num == 2: #2 表示上传 sys.stdout.write('\r已上传:\033[1;32m{0}%\033[0m'.format(rate)) sys.stdout.flush() def get(self): '''从server下载文件到client''' if len(self.cmds) > 1: filename = self.cmds[1] self.filepath = os.path.join(self.DOWNLOAD_PATH, filename) #结合目录名和文件名 if os.path.isfile(self.filepath): #如果文件存在，支持断点续传 temp_file_size = os.path.getsize(self.filepath) self.socket.send(struct.pack('i', temp_file_size)) header_size = struct.unpack('i', self.socket.recv(4))[0] if header_size: #如果存在 header_dic = pickle.loads(self.socket.recv(header_size)) print(header_dic) filename = header_dic.get('filename') file_size = header_dic.get('file_size') file_md5 = header_dic.get('file_md5') if temp_file_size == file_size: print('\033[1;32m文件已经存在\033[0m') else: print('\033[1;33m正在进行断点续传....\033[0m') download_filepath = os.path.join(self.DOWNLOAD_PATH, filename) with open(download_filepath, 'ab') as f: f.seek(temp_file_size) get_size = temp_file_size while get_size 1: #确保用户输入了文件名 filename = self.cmds[1] filepath = os.path.join(self.UPLOAD_PATH, filename) if os.path.isfile(filepath): self.socket.send(struct.pack('i', 1)) self.filepath = filepath filesize = os.path.getsize(self.filepath) header_dic = { 'filename': filename, 'file_md5': self.getfile_md5(), 'file_size': filesize } header_bytes = pickle.dumps(header_dic) self.socket.send(struct.pack('i',len(header_bytes))) self.socket.send(header_bytes) state = struct.unpack('i', self.socket.recv(4))[0] if state: #已经存在了 has_state = struct.unpack('i', self.socket.recv(4))[0] if has_state: quota_state = struct.unpack('i',self.socket.recv(4))[0] if quota_state: has_size = struct.unpack('i', self.socket.recv(4))[0] with open(self.filepath, 'rb') as f: f.seek(has_size) for line in f: self.socket.send(line) recv_size = struct.unpack('i', self.socket.recv(4))[0] self.progress_bar(2, recv_size, filesize) success_state = struct.unpack('i', self.socket.recv(4))[0] '''这里一定要判断，因为最后一次send(line)之后等待server返回， server返回，最后一次的recv_size==file_size，但client已经跳出了循环， 所以在for外面接收的success_state其实时file_size,这种情况只针对大文件 ''' if success_state == filesize: success_state = struct.unpack('i', self.socket.recv(4))[0] if success_state: print('\n\033[1;32m恭喜您，上传成功\033[0m') else: print('\n\033[1;32m上传失败\033[0m') else: #超出了配额 print('\033[1;31m超出了用户的配额\033[0m') else: #存在的大小和文件大小一致，不必再传 print('\033[1;31m当前目录下，文件已经存在\033[0m') else: #第一次传 quota_state = struct.unpack('i', self.socket.recv(4))[0] if quota_state: with open(self.filepath, 'rb') as f: send_bytes = b'' for line in f: self.socket.send(line) send_bytes += line print('总大小:%s 已上传：%s' % (filesize, len(send_bytes))) recv_size = struct.unpack('i',self.socket.recv(4))[0] self.progress_bar(2, recv_size, filesize) succes_state = struct.unpack('i',self.socket.recv(4))[0] if succes_state == filesize: succes_state = struct.unpack('i',self.socket.recv(4))[0] if succes_state: print('\n\033[1;32m恭喜您，上传成功\033[0m') else: print('\n\033[1;32m上传失败\033[0m') else: #超出了配额 print('\033[1;31m超出了用户的配额\033[0m') else: #文件不存在 print('\033[1;31m文件不存在\033[0m') self.socket.send(struct.pack('i', 0)) else: print('用户没有输入文件名') def ls(self): '''查询当前工作目录下，文件列表''' dir_size = struct.unpack('i', self.socket.recv(4))[0] recv_size = 0 recv_bytes = b'' while recv_size 1: res = struct.unpack('i', self.socket.recv(4))[0] if res: print('\033[1;32m在当前目录下，增加目录: %s 成功\033[0m'% self.cmds[1]) else: print('\033[1;31m增加目录失败\033[0m') else: print('没有输入要增加的目录名') def cd(self): '''切换目录''' if len(self.cmds) > 1: res = struct.unpack('i', self.socket.recv(4))[0] if res: print('\033[1;32m切换成功\033[0m') else: print('\033[1;32m切换失败\033[0m') else: print('没有输入要切换的目录名') def remove(self): '''删除指定的文件，或者文件夹''' if len(self.cmds) > 1: res = struct.unpack('i', self.socket.recv(4))[0] if res: print('\033[1;32m删除成功\033[0m') else: print('\033[1;31m删除失败\033[0m') else: print('没有输入要删除的文件') def interactive(self): '''与server交互''' if self.auth(): while True: try: user_input = input('[%s]>>>:'%self.username) if not user_input:continue self.socket.send(user_input.encode('utf-8')) self.cmds = user_input.split() if hasattr(self, self_cmds[0]): getattr(self, self.cmds[0])() else: print('请重新输入') except Exception as e: #server关闭了 print(e) break def close(self): self.socket.close() if __name__ == '__main__': ftp_client = Ftpclient() ftp_client.interactive() ftp_client.close()
|
【本文地址】
公司简介
联系我们