ftpbackup.py

#! /usr/bin/python
### Copy everything on a FTP server to a local folder

from ftplib import FTP
import os.path
import datetime

def main():
	#fill in the parameters here
	ftpaddress = '1.1.1.1'
	username = 'user'
	password = 'pass'
	backupfolder = '~/backup'
	#create dir for today
	backupfolder = os.path.expanduser(backupfolder)
	if not os.path.exists(backupfolder):
		os.makedirs(backupfolder)
	os.chdir(backupfolder)
	d = datetime.date.today()
	localdir = d.strftime("%Y%m%d")
	if not os.path.exists(localdir):
		os.mkdir(localdir)
	os.chdir(localdir)	
	#login FTP
	f = FTP(ftpaddress)
	f.login(username,password)
	print ('logging in')
	backupdir(f,'htdocs','htdocs')
	if not os.path.exists('done'):
		os.makedirs('done')	
	f.close()
	
def backupdir(f, remotedir, localdir):
	print 'current remote dir: ', remotedir
	print 'current local dir: ', os.path.abspath(localdir)
	try:
		f.cwd(remotedir)
	except ftplib.error_perm, msg:
		print "Can't chdir to", remotedir, ":", msg
	else:
		#prepare local dir
		if not os.path.exists(localdir):
			os.mkdir(localdir)
		os.chdir(localdir)
		subdirs = []
		listing = []
		filesfound = []
		f.retrlines('LIST', listing.append)
		for line in listing:
			words = line.split(None, 8)
			filename = words[-1].lstrip()
			mode = words[0]
			if mode[0] == 'd':
				subdirs.append(filename)
				continue
			else:
				filesfound.append(filename)
		for file in filesfound:
			savefile(f, file)
		for subdir in subdirs:
			backupdir(f, subdir, subdir)
		f.cwd('..')
		os.chdir('..')

def savefile(f, filename):
	print "copying:", os.path.abspath(filename)
	#delete local copy first
	if(os.path.exists(filename)):
		os.remove(filename)
	#then duplicate
	try:
		fp = open(filename, 'wb')
	except IOError, msg:
		print "Can't create %r: %s" % (filename, msg)
	else:
		try:
			f.retrbinary('RETR ' + filename, fp.write)
		except ftplib.error_perm, msg:
			print msg
		fp.close()
			
		

if __name__ == '__main__':
	main()