python ftp 处理

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")