#!/bin/env python

from ftplib import FTP
from os import popen
from getpass import getpass
from ConfigParser import ConfigParser

# Edit these entries to suit your setup
backup_file = '/usr/local/backups.txt'
ftphost = 'my.ftp.com'
ftpuname = 'bubba'
ftppass = 'beerbelly'
duplicity_command = '/usr/bin/duplicity'

p = ConfigParser()
p.read(backup_file)

backups = {} # keys are ftp filename, values are local directory path
for ftpname,localname in p.items('Backups'):
....backups[ftpname] = localname


def doublequote(s):
....return '"' + s + '"'

ftp = FTP(ftphost)
ftp.login(ftpuname,ftppass)
l=ftp.nlst()

for i in backups.keys():
....if i not in l:
........print 'Directory "%s" is not on the FTP server.' % i
........print "Creating directory %s on server...\n" % i
........ftp.mkd(i)
ftp.quit()

print "Starting duplicity synchronization ...\n"
gpg_passphrase = getpass("Enter your GPG passphrase:  ")
gpg_passphrase = 'PASSPHRASE="' + gpg_passphrase + '"'

space = ' '
for ftpdir in backups.keys():
....command = 'FTP_PASSWORD=' + doublequote(ftppass) + space \
............  + gpg_passphrase + space + duplicity_command + space \
............  + doublequote(backups[ftpdir]) + space + 'ftp://'   \
............  + ftpuname + '@' + ftphost + '/' + ftpdir
....print "\nStarting backup of directory:\n   %s\n" % backups[ftpdir]
....popen(command).read()

print "\nDone!"