Python中默认安装的ftplib模块定义了FTP类，其中函数有限，可用来实现简单的ftp客户端，用于上传或下载文件
FTP的工作流程及基本操作可参考协议RFC959
ftp登陆连接
from ftplib import FTP #加载ftp模块
ftp=FTP() #设置变量
ftp.set_debuglevel(2) #打开调试级别2，显示详细信息
ftp.connect("IP","port") #连接的ftp sever和端口
ftp.login("user","password")#连接的用户名，密码
print ftp.getwelcome() #打印出欢迎信息
ftp.cmd("xxx/xxx") #更改远程目录
bufsize=1024 #设置的缓冲区大小
filename="filename.txt" #需要下载的文件
file_handle=open(filename,"wb").write #以写模式在本地打开文件
ftp.retrbinaly("RETR filename.txt",file_handle,bufsize) #接收服务器上文件并写入本地文件
ftp.set_debuglevel(0) #关闭调试模式
ftp.quit #退出ftp
ftp相关命令操作
ftp.cwd(pathname) #设置FTP当前操作的路径
ftp.dir() #显示目录下文件信息
ftp.nlst() #获取目录下的文件
ftp.mkd(pathname) #新建远程目录
ftp.pwd() #返回当前所在位置
ftp.rmd(dirname) #删除远程目录
ftp.delete(filename) #删除远程文件
ftp.rename(fromname, toname)#将fromname修改名称为toname。
ftp.storbinaly("STOR filename.txt",file_handel,bufsize) #上传目标文件
ftp.retrbinary("RETR filename.txt",file_handel,bufsize)#下载FTP文件
from pyftpdlib.authorizers import DummyAuthorizer
from pyftpdlib.handlers import FTPHandler
from pyftpdlib.servers import FTPServer
from CFileOperator import CFileOperator
import ftplib
import os
import thread
import time
import socket
class CFTPServer():
def __init__(self, name="song", passwd="song", port=21):
self._name = name
self._passwd = passwd
self._port = port
def Start(self):
authorizer = DummyAuthorizer()
authorizer.add_user(self._name, self._passwd, '.', perm='elradfmwM')
authorizer.add_anonymous(os.getcwd())
handler = FTPHandler
handler.authorizer = authorizer
handler.banner = "pyftpdlib based ftpd ready."
address = ('', self._port)
self._server = FTPServer(address, handler)
self._server.max_cons = 256
self._server.max_cons_per_ip = 5
self._server.serve_forever()
def Stop(self):
self._server.close_all()
class CFTPCLient():
def __init__(self, host="127.0.0.1", name="song", passwd="song", port=21,savepath='./'):
self._host = host
self._name = name
self._passwd = passwd
self._port = port
self._ftp = None
self._connet = False
self._buffer = 2048
self._FileOperator = CFileOperator()
self._savepath=savepath
self._srcpath=os.getcwd()
def conneterver(self):
try:
self._ftp = ftplib.FTP(self._host)
except (socket.error, socket.gaierror), e:
print 'ERROR: cannot reach "%s"' % self._host
self._connet = False
return
print '*** Connected to host "%s"' % self._host
try:
self._ftp.login(self._name, self._passwd)
except ftplib.error_perm:
print 'ERROR: login failed with "%s" and "%s"' % self._name, self._passwd
self._ftp.quit()
self._connet = False
return
self._ftp.cwd('./')
self._ftp.nlst()
print '*** Logged in'
self._connet = True
def CmdPath(self,path):
if not self._connet:
self.conneterver()
if not self._connet:
return
self._ftp.cwd(path)
def GetCur(self):
if not self._connet:
self.conneterver()
if not self._connet:
return
return self._ftp.pwd()
def List(self):
if not self._connet:
self.conneterver()
if not self._connet:
return
self._ftp.dir()
def UPLoadFile(self, filename):
if not self._connet:
self.conneterver()
if not self._connet:
return
elem = filename
if self._FileOperator.ISDirExit(filename):
self._FileOperator.TarFile(filename)
elem += ".tar"
file_open = open(elem, 'rb')
self._ftp.storbinary('STOR %s' % os.path.basename(elem), file_open, self._buffer)
if not file_open.closed:
file_open.close()
def DeleteRomoteFile(self,filename):
if not self._connet:
self.conneterver()
if not self._connet:
return
self._ftp.delete(filename)
def DeleteRomoteDir(self,Dir):
if not self._connet:
self.conneterver()
if not self._connet:
return
self._ftp.rmd(Dir)
def RenameRomoteFile(self,oldname,newname):
if not self._connet:
self.conneterver()
if not self._connet:
return
self._ftp.rename(oldname,newname)
def get_dirs_files(self):
dir_res = []
self._ftp.dir('.', dir_res.append)
files = [f.split(None, 8)[-1] for f in dir_res if f.startswith('-')]
dirs = [f.split(None, 8)[-1] for f in dir_res if f.startswith('d')]
return (files, dirs)
def DownLoadFile(self, next_dir):
if not self._connet:
self.conneterver()
if not self._connet:
return
print 'Walking to', next_dir
self._ftp.cwd(next_dir)
try:
os.mkdir(next_dir)
except OSError:
pass
os.chdir(next_dir)
ftp_curr_dir = self._ftp.pwd()
local_curr_dir = os.getcwd()
files, dirs = self.get_dirs_files()
print "FILES: ", files
print "DIRS: ", dirs
for f in files:
print next_dir, ':', f
outf = open(f, 'wb')
try:
self._ftp.retrbinary('RETR %s' % f, outf.write)
finally:
outf.close()
for d in dirs:
os.chdir(local_curr_dir)
self._ftp.cwd(ftp_curr_dir)
self.walk(d)
if __name__ == '__main__':
c = CFTPServer()
thread.start_new_thread(c.Start, ())
d = CFTPCLient()
time.sleep(2)
d.UPLoadFile("/home/test")
time.sleep(3000)
#d.UPLoadFile("/home/test")
# d.DownLoadFile("/test.tar")
# f =CFileOperator()
#f.TarFile("/home/test")
