需求：开发一个支持多用户同时在线的FTP程序
要求：
1、用户加密认证
2、允许同时多用户登录（用到并发编程的知识，选做）
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（选做）
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
8、文件传输过程中显示进度条
9、附加：支持文件的断点续传（选做）
开发的程序需符合PEP8开发规范，及专业的生产软件设计规范，包括目录、代码命名、功能接口等
client
confsettings
import os BASE_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) DOWN_PATH = os.path.join(BASE_PATH, "download") UP_PATH = os.path.join(BASE_PATH, "upload") CODING = "utf-8" MAX_PACKET_SIZE = 8192
client
import os
import sys
import socket
import struct
import json
import hashlib
import shelve
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from conf import settings
class MYClient:
"""
ftp客户端
"""
address_family = socket.AF_INET
socket_type = socket.SOCK_STREAM
def __init__(self, server_address):
self.server_address = server_address
self.socket = socket.socket(self.address_family, self.socket_type)
self.client_connect()
self.username = None
self.client_status = False
self.terimal = None
self.shelve_obj = shelve.open("db")
self.server_file_path = None
self.home_path = None
def client_connect(self):
"""与服务器连接"""
self.socket.connect(self.server_address)
def read_file(self, path):
"""读取文件"""
with open(path, "rb") as f:
return f.read()
def hash_md5(self, msg):
"""加密"""
m = hashlib.md5()
m.update(msg)
# print(m.hexdigest())
return m.hexdigest()
def header(self, status, **kwargs):
"""制作、发送报头"""
header_dic = kwargs
header_dic["status"] = status
header_json = json.dumps(header_dic)
header_bytes = header_json.encode(settings.CODING)
self.socket.send(struct.pack("i", len(header_bytes))) # header_dic的大小传送给客户端
self.socket.send(header_bytes) # header_dic数据传送给客户端
def recv_header(self):
"""接收报头"""
header = self.socket.recv(4) # 接收报头
header_size = struct.unpack("i", header)[0]
header_bytes = self.socket.recv(header_size) # 接收报头信息
header_json = header_bytes.decode(settings.CODING)
header_dic = json.loads(header_json)
return header_dic
def get(self, data):
"""
下载
:param data: 指令、文件名、用户名
:return:
"""
if len(data) == 2:
username = data[1]
filename = input("请输入上传文件名：")
else:
username = data[2]
filename = data[1]
msg = {"action_type": "get", "filename": filename, "username": username, "s_file_path": self.server_file_path}
self.socket.send(json.dumps(msg).encode(settings.CODING))
header_dic = self.recv_header()
if header_dic["status"] == "200":
self.socket.send(header_dic["status"].encode(settings.CODING))
c_file_path = os.path.join(os.path.join(settings.DOWN_PATH, msg["username"]), msg["filename"])
self.server_file_path = header_dic["s_file_path"]
long = str(len(self.shelve_obj.keys())+1)
while True:
if long in self.shelve_obj.keys():
long = str(int(long) + 1)
else:
break
if os.path.isfile(c_file_path):
print("%s文件已存在" % filename)
self.socket.send("000".encode(settings.CODING))
return
else:
self.socket.send("999".encode(settings.CODING))
self.shelve_obj[long] = {
"filename": msg["filename"]+".download",
"s_file_path": self.server_file_path+".download",
"file_size": header_dic["file_size"]
}
with open("%s.download" % c_file_path, "wb")as f: # 接收数据
recv_size = 0
while recv_size < header_dic["file_size"]:
line = self.socket.recv(settings.MAX_PACKET_SIZE)
f.write(line)
recv_size += len(line)
self.progress_bar(recv_size, header_dic["file_size"])
f.close()
os.rename("%s.download" % c_file_path, c_file_path)
num = self.hash_md5(self.read_file(c_file_path))
if num == header_dic["md5"]:
self.socket.send("999".encode(settings.CODING))
print("下载完成")
del self.shelve_obj[long]
else:
self.socket.send("000".encode(settings.CODING))
print("文件下载出错")
elif header_dic["status"] == "210":
self.socket.send(header_dic["status"].encode(settings.CODING))
print(header_dic["status_msg"])
def resume(self):
"""
断点续传
:return:
"""
if len(self.shelve_obj.keys()) == 0:
return
print("未传送完成文件".center(50, "-"))
for k in self.shelve_obj.keys():
relative_path = self.shelve_obj[k]["s_file_path"].replace(self.home_path, "")
print("序号：%s，文件名：%s，文件大小：%s，文件地址：%s" %
(k, self.shelve_obj[k]["filename"], self.shelve_obj[k]["file_size"], relative_path))
while True:
print("请输入继续传送文件的序号，退出请输“q”")
choice = input(">>")
if not choice:
continue
elif choice == "q":
return
elif choice.isdigit():
file_path = os.path.join(os.path.join(self.home_path, self.username),
self.shelve_obj[choice]["s_file_path"]).rstrip(".download")
filename = self.shelve_obj[choice]["filename"].rstrip(".download")
complete_size = self.shelve_obj[choice]["file_size"]
incomplete_size = os.path.getsize(
os.path.join(os.path.join(settings.DOWN_PATH, self.username), self.shelve_obj[choice]["filename"]))
header_dic = {"filename": filename, "s_file_path": file_path, "incomplete_size": incomplete_size}
client_path = os.path.join(os.path.join(settings.DOWN_PATH, self.username), filename)
header_dic["client_path"] = client_path
msg = {"action_type": "resume", "filename": filename, "username": self.username}
self.socket.send(json.dumps(msg).encode(settings.CODING))
if int(choice) > 0 and int(choice) <= len(self.shelve_obj.keys()):
if self.socket.recv(3).decode(settings.CODING) == "999":
status = "500"
self.header(status, **header_dic)
header_dic = self.recv_header()
with open("%s.download" % header_dic["client_path"], "ab")as f: # 接受真实的数据
while incomplete_size < complete_size:
line = self.socket.recv(settings.MAX_PACKET_SIZE)
f.write(line)
incomplete_size += len(line)
self.progress_bar(incomplete_size, complete_size)
f.close()
os.rename("%s.download" % header_dic["client_path"], header_dic["client_path"])
num = self.hash_md5(self.read_file(header_dic["client_path"]))
if num == header_dic["md5"]:
self.socket.send("999".encode(settings.CODING))
print("下载完成")
del self.shelve_obj[choice]
else:
self.socket.send("000".encode(settings.CODING))
print("文件下载出错")
else:
print("输入错误，请重新输入！")
def put(self, data):
"""
上传
:param data:
:return:
"""
if len(data) == 2:
username = data[1]
filename = input("请输入上传文件名：")
else:
username = data[2]
filename = data[1]
c_file_path = os.path.join(os.path.join(settings.UP_PATH, username), filename)
if os.path.isfile(c_file_path):
msg = {"action_type": "put", "filename": filename, "username": username}
self.socket.send(json.dumps(msg).encode(settings.CODING))
res = self.socket.recv(3).decode(settings.CODING)
if res == "999":
status = "200"
file_size = os.path.getsize(c_file_path)
header_dic = {
"filename": data[1],
"md5": self.hash_md5(self.read_file(c_file_path)),
"file_size": file_size,
"s_file_path": self.server_file_path
}
self.header(status, **header_dic)
if self.socket.recv(3).decode(settings.CODING) == "000":
ask = input("%s文件已存在，是否覆盖？" % filename)
if ask == "n":
self.socket.send("000".encode(settings.CODING))
return
elif ask == "y":
self.socket.send("999".encode(settings.CODING))
else:
print("输入错误")
self.socket.send("000".encode(settings.CODING))
return
else:
self.socket.send("999".encode(settings.CODING))
header_dic = self.recv_header()
if header_dic["status"] == "300":
send_size = 0
with open(c_file_path, "rb")as f:
for line in f:
self.socket.send(line)
send_size += len(line)
self.progress_bar(send_size, file_size)
f.close()
res = self.socket.recv(3).decode(settings.CODING)
if res == "999":
print("上传成功！")
else:
print("上传失败！")
else:
print(header_dic["status_msg"])
return
else:
return
else:
print("文件不存在")
return
def progress_bar(self, recv_size, file_size):
"""
进度条
:param recv_size: 已接收大小
:param file_size: 总共大小
:return:
"""
rate = recv_size / file_size
rate_num = int(rate * 100)
number = int(50 * rate)
r = '
[%s%s]%d%%' % ("#" * number, " " * (50 - number), rate_num,)
print("
{}".format(r), end=" ")
def login(self):
"""
用户验证
:return:
"""
count = 0
while count < 3:
username = input("请输入用户名：").strip()
if not username:
continue
password = input("请输入密码：").strip()
msg = {"action_type": "login", "username": username, "password": password}
self.socket.send(json.dumps(msg).encode(settings.CODING))
header_dic = self.recv_header()
if header_dic["status"] == "100":
self.home_path = header_dic["home_path"]
self.username = username
print("登陆成功，欢迎%s" % username)
self.terimal = "%s" % username
return True
elif header_dic["status"] == "110":
print("用户名或密码错误")
count += 1
# return False
def run(self):
"""
与服务器的所有交互
:return:
"""
if not self.username:
self.client_status = self.login()
if self.client_status:
self.resume()
while True:
print("输入help可看帮助")
user_input = input("%s,请输入命令:" % self.terimal).strip()
if not user_input:
continue
data = user_input.split()
cmd = data[0]
data.append(self.username) # [get,1.mp3,username]
# print(data)
if hasattr(self, cmd):
func = getattr(self, cmd)
func(data)
else:
print("输入有误，请重新输入")
def help(self, data):
"""
帮助
:param data:
:return:
"""
msg = {"get 文件名": "下载文件",
"put 文件名": "上传文件",
"dir": "查看当前路径",
"cd 目标路径": "切换目录"
}
for k in msg:
print("指令：“%s”，功能：%s" % (k, msg[k]))
def dir(self, data):
"""
查看当前目录
:param data:
:return:
"""
msg = {"action_type": "dir", "username": data[1]}
self.socket.send(json.dumps(msg).encode(settings.CODING))
msg_dic = self.recv_header()
if msg_dic["status"] == "200":
print(msg_dic["msg"])
else:
print(msg_dic["status_msg"])
def cd(self, data):
"""
切换目录
:param data:
:return:
"""
if len(data) == 2:
target = input("请输入切换到的目录：")
else:
target = data[1]
msg = {"action_type": "cd", "target": target}
self.socket.send(json.dumps(msg).encode(settings.CODING))
msg_dic = self.recv_header()
if msg_dic["status"] == "400":
print("目录切换成功")
self.server_file_path = msg_dic["path"]
# print(msg_dic["path"])
self.terimal = msg_dic["current_path"]
else:
print(msg_dic["status_msg"])
client = MYClient(('127.0.0.1', 8080))
client.run()
server
binserver
import os
import sys
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR)
if __name__ == "__main__":
from core import main
from conf import settings
ftp_server = main.MYServer(settings.server_address)
ftp_server.run()
confsettings
import os
BASE_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
CONF_PATH = os.path.join(BASE_PATH, "conf")
SERVER_PATH = os.path.join(BASE_PATH, "core")
HOME_PATH = os.path.join(BASE_PATH, "home")
SERVER_ADDRESS = ("127.0.0.1", 8080)
REQUEST_QUEUEST_SIZE = 5
MAX_PACKET_SIZE = 8192
CODING = "utf-8"
ALLOW_REUSE_ADDRESS = False
用户初始化信息
import configparser
import hashlib
config = configparser.ConfigParser()
config["alex"] = {}
password = "abc123"
n = hashlib.md5()
n.update(password.encode("utf-8"))
config["alex"]["name"] = "alex"
config["alex"]["password"] = n.hexdigest()
config["alex"]["quato"] = "5"
config["egon"] = {}
password = "efg456"
m = hashlib.md5()
m.update(password.encode("utf-8"))
config["egon"]["name"] = "egon"
config["egon"]["password"] = m.hexdigest()
config["alex"]["quato"] = "3"
config["jack"] = {}
password = "hij789"
l = hashlib.md5()
l.update(password.encode("utf-8"))
config["jack"]["name"] = "jack"
config["jack"]["password"] = l.hexdigest()
config["alex"]["quato"] = "2.5"
with open("config.ini", "w")as f:
config.write(f)
coremain
import socket
import os
import json
import hashlib
import configparser
import struct
import subprocess
from conf import settings
class MYServer(object):
"""
ftp服务端
"""
address_family = socket.AF_INET
socket_type = socket.SOCK_STREAM
STATUS = {
"100": "用户验证成功！",
"110": "用户名或密码错误！",
"200": "文件存在",
"210": "文件不存在",
"300": "存储空间足够",
"310": "存储空间不足",
"400": "路径存在",
"410": "路径不存在",
"500": "文件续传",
"999": "文件传输成功",
"000": "文件传输失败"
}
def __init__(self, server_address):
self.server_address = server_address
self.socket = socket.socket(self.address_family, self.socket_type)
self.server_bind()
self.server_listen()
self.user_current_dir = ""
self.file_size = 0
def server_bind(self):
"""
绑定
:return:
"""
if settings.ALLOW_REUSE_ADDRESS:
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.bind(self.server_address)
def server_listen(self):
"""
监听
:return:
"""
self.socket.listen(settings.REQUEST_QUEUEST_SIZE)
def run(self):
"""
建立连接，启动socket server
:return:
"""
while True:
self.conn, self.client_addr = self.socket.accept()
try:
self.manage()
except ConnectionRefusedError:
print("客户端发生错误，断开连接")
self.socket.close()
def manage(self):
"""
处理与用户的所有指令交互
:return:
"""
while True:
data = self.conn.recv(settings.MAX_PACKET_SIZE) # 接收客户端指令
if not data:
print("连接断开... ")
del self.conn, self.client_addr
break
cmd_data = json.loads(data.decode(settings.CODING))
action_type = cmd_data["action_type"]
if action_type:
if hasattr(self, action_type):
func = getattr(self, action_type)
func(cmd_data)
else:
print("未接收到有效指令")
def header(self, status, **kwargs):
"""
制作、发送报头
:param status: 状态码
:param kwargs:
:return:
"""
header_dic = kwargs
header_dic["status"] = status
header_dic["status_msg"] = self.STATUS[status]
header_dic["home_path"] = settings.HOME_PATH
# print(header_dic)
header_json = json.dumps(header_dic)
header_bytes = header_json.encode(settings.CODING)
self.conn.send(struct.pack("i", len(header_bytes))) # header_dic的大小传送给客户端
self.conn.send(header_bytes) # header_dic数据传送给客户端
def recv_header(self):
"""
接收报头
:return:
"""
header = self.conn.recv(4) # 接收报头
header_size = struct.unpack("i", header)[0]
header_bytes = self.conn.recv(header_size) # 接收报头信息
header_json = header_bytes.decode(settings.CODING)
header_dic = json.loads(header_json)
return header_dic
def read_info(self):
"""
加载所有账户信息
:return:
"""
conf = configparser.ConfigParser()
conf.read(r"%s/%s" % (settings.CONF_PATH, "config.ini"))
return conf
def login(self, data):
"""
用户登陆验证
:param data: 指令、用户名、密码
:return:
"""
username = data["username"]
password = data["password"]
conf = self.read_info()
psd = self.hash_md5(password.encode(settings.CODING))
if username in conf:
if psd == conf[username]["password"]:
print("认证成功")
self.header("100")
self.user_current_dir = os.path.join(settings.HOME_PATH, username)
return True
else:
self.header("110")
print("认证失败")
return False
else:
self.header("110")
print("认证失败")
return False
def read_file(self, path):
"""
打开文件
:param path: 文件路径
:return:
"""
with open(path, "rb") as f:
return f.read()
def hash_md5(self, msg):
"""
md5加密
:param msg: 加密信息
:return:
"""
m = hashlib.md5()
m.update(msg)
# print(m.hexdigest())
return m.hexdigest()
def get(self, data):
"""
下载
:param data: 指令、文件名，用户名、服务器路径
:return:
"""
if data["s_file_path"] is None:
file_path = os.path.join(os.path.join(settings.HOME_PATH, data["username"]), data["filename"])
else:
file_path = os.path.join(data["s_file_path"], data["filename"])
if os.path.isfile(file_path):
status = "200"
self.file_size = os.path.getsize(file_path)
header_dic = {
"filename": data["filename"],
"md5": self.hash_md5(self.read_file(file_path)),
"file_size": self.file_size,
"s_file_path": file_path
}
self.header(status, **header_dic)
else:
status = "210"
self.header(status)
if self.conn.recv(3).decode(settings.CODING) == "200":
if self.conn.recv(4).decode(settings.CODING) == "999":
send_size = 0
with open(file_path, "rb")as f:
for line in f:
self.conn.send(line)
send_size += len(line)
self.progress_bar(send_size, self.file_size)
f.close()
res = self.conn.recv(4).decode(settings.CODING)
if res == "999":
print("下载成功！")
else:
print("下载失败！")
else:
return
else:
print(self.STATUS["210"])
def progress_bar(self, recv_size, file_size):
"""进度条
:param recv_size: 已接收大小
:param file_size: 总共大小
:return:
"""
rate = recv_size / file_size
rate_num = int(rate * 100)
number = int(50 * rate)
r = '
[%s%s]%d%%' % ("#" * number, " " * (50 - number), rate_num,)
print("
{}".format(r), end=" ")
def put(self, data):
"""
上传
:param data: 指令、文件名，用户名
:return:
"""
self.conn.send("999".encode(settings.CODING))
header_dic = self.recv_header()
if header_dic["s_file_path"] is None:
file_path = os.path.join(os.path.join(settings.HOME_PATH, data["username"]), data["filename"])
else:
file_path = os.path.join(header_dic["s_file_path"], data["filename"])
quato = float(self.read_info()[data["username"]]["quato"]) * 1024 * 1024 * 1024
full_size = 0
for parent, dirs, files in os.walk(file_path):
for file in files:
fullname = os.path.join(parent, file)
filesize = os.path.getsize(fullname)
full_size += filesize
header_dic.pop("status")
header_dic["file_path"] = file_path
if full_size + header_dic["file_size"] <= quato:
status = "300"
else:
status = "310"
if os.path.isfile(file_path):
print("%s文件已存在" % data["filename"])
self.conn.send("000".encode(settings.CODING))
else:
self.conn.send("999".encode(settings.CODING))
if self.conn.recv(3).decode(settings.CODING) == "999":
self.header(status, **header_dic)
if status == "300":
recv_size = 0
with open(file_path, "wb")as f: # 接受真实的数据
while recv_size < header_dic["file_size"]:
line = self.conn.recv(settings.MAX_PACKET_SIZE)
f.write(line)
recv_size += len(line)
self.progress_bar(recv_size, header_dic["file_size"])
f.close()
num = self.hash_md5(self.read_file(file_path))
# print(num)
if num == header_dic["md5"]:
self.conn.send("999".encode(settings.CODING))
print("上传成功")
else:
self.conn.send("000".encode(settings.CODING))
print("文件上传失败")
else:
print(self.STATUS[status])
else:
return
def dir(self, data):
"""
查看当前目录
:param data: 指令、用户名
:return:
"""
cmd_obj = subprocess.Popen("dir %s" % self.user_current_dir, shell=True, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout = cmd_obj.stdout.read()
stderr = cmd_obj.stderr.read()
result = stdout + stderr
if not result:
result = "当前目录下没有任何文件".encode("gbk")
status = "200"
msg = {"msg": result.decode("gbk")}
self.header(status, **msg)
def cd(self, data):
"""
改变目录
:param data: 指令，目标路径
:return:
"""
current_dir = os.path.abspath(os.path.join(self.user_current_dir, data["target"]))
print(current_dir)
if os.path.isdir(current_dir):
if current_dir.startswith(settings.HOME_PATH):
status = "400"
current_path = current_dir.replace(settings.HOME_PATH, "")
self.user_current_dir = current_dir
msg = {"path": current_dir, "current_path": current_path}
self.header(status, **msg)
else:
status = "410"
self.header(status)
else:
status = "410"
self.header(status)
def resume(self, data):
"""
断点续传
:param data: 指令、文件名，用户名
:return:
"""
self.conn.send("999".encode(settings.CODING))
header_dict = self.recv_header()
incomplete_size = header_dict["incomplete_size"]
complete_size = os.path.getsize(header_dict["s_file_path"])
balance = complete_size - incomplete_size
header_dict["balance"] = balance
header_dict["md5"] = self.hash_md5(self.read_file(header_dict["s_file_path"]))
status = "500"
header_dict.pop("status")
self.header(status, **header_dict)
with open(header_dict["s_file_path"], "rb")as f:
f.seek(incomplete_size)
for line in f:
self.conn.send(line)
incomplete_size += len(line)
self.progress_bar(incomplete_size, complete_size)
f.close()
res = self.conn.recv(4).decode(settings.CODING)
if res == "999":
print("下载成功！")
else:
print("下载失败！")
# server = MYServer(('127.0.0.1', 8080))
# server.run()
README
服务端入口：bin-->server.py 客户端入口：client.py 客户端默认下载到download中 客户端从upload文件夹中上传文件 用户信息存在conf-->config.ini中