chpass-wrapper.py
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chpass-wrapper.py
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	#!/usr/bin/env python

	import sys
	import pwd
	import subprocess

	BLACKLIST = (
	# add blacklisted users here
	#'user1',
	)

	try:
	username, password = sys.stdin.readline().split(':', 1)
	except ValueError:
	sys.exit('Malformed input')

	try:
	user = pwd.getpwnam(username)
	except KeyError:
	sys.exit('No such user: %s' % username)

	if user.pw_uid < 1000:
	sys.exit('Changing the password for user id < 1000 is forbidden')

	if username in BLACKLIST:
	sys.exit('Changing password for user %s is forbidden (user blacklisted)' %
	username)

	handle = subprocess.Popen('/usr/sbin/chpasswd', stdin = subprocess.PIPE)
	handle.communicate('%s:%s' % (username, password))

	sys.exit(handle.returncode)