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# vi: ts=4 expandtab
#
# Copyright (C) 2009-2010 Canonical Ltd.
#
# Author: Scott Moser <scott.moser@canonical.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import cloudinit.util as util
import sys
import random
from string import letters, digits # pylint: disable=W0402
def handle(_name, cfg, _cloud, log, args):
if len(args) != 0:
# if run from command line, and give args, wipe the chpasswd['list']
password = args[0]
if 'chpasswd' in cfg and 'list' in cfg['chpasswd']:
del cfg['chpasswd']['list']
else:
password = util.get_cfg_option_str(cfg, "password", None)
expire = True
pw_auth = "no"
change_pwauth = False
plist = None
if 'chpasswd' in cfg:
chfg = cfg['chpasswd']
plist = util.get_cfg_option_str(chfg, 'list', plist)
expire = util.get_cfg_option_bool(chfg, 'expire', expire)
if not plist and password:
user = util.get_cfg_option_str(cfg, "user", "ubuntu")
plist = "%s:%s" % (user, password)
errors = []
if plist:
plist_in = []
randlist = []
users = []
for line in plist.splitlines():
u, p = line.split(':', 1)
if p == "R" or p == "RANDOM":
p = rand_user_password()
randlist.append("%s:%s" % (u, p))
plist_in.append("%s:%s" % (u, p))
users.append(u)
ch_in = '\n'.join(plist_in)
try:
util.subp(['chpasswd'], ch_in)
log.debug("changed password for %s:" % users)
except Exception as e:
errors.append(e)
log.warn("failed to set passwords with chpasswd: %s" % e)
if len(randlist):
sys.stdout.write("%s\n%s\n" % ("Set the following passwords\n",
'\n'.join(randlist)))
if expire:
enum = len(errors)
for u in users:
try:
util.subp(['passwd', '--expire', u])
except Exception as e:
errors.append(e)
log.warn("failed to expire account for %s" % u)
if enum == len(errors):
log.debug("expired passwords for: %s" % u)
if 'ssh_pwauth' in cfg:
val = str(cfg['ssh_pwauth']).lower()
if val in ("true", "1", "yes"):
pw_auth = "yes"
change_pwauth = True
elif val in ("false", "0", "no"):
pw_auth = "no"
change_pwauth = True
else:
change_pwauth = False
if change_pwauth:
pa_s = "\(#*\)\(PasswordAuthentication[[:space:]]\+\)\(yes\|no\)"
msg = "set PasswordAuthentication to '%s'" % pw_auth
try:
cmd = ['sed', '-i', 's,%s,\\2%s,' % (pa_s, pw_auth),
'/etc/ssh/sshd_config']
util.subp(cmd)
log.debug(msg)
except Exception as e:
log.warn("failed %s" % msg)
errors.append(e)
try:
p = util.subp(['service', cfg.get('ssh_svcname', 'ssh'),
'restart'])
log.debug("restarted sshd")
except:
log.warn("restart of ssh failed")
if len(errors):
raise(errors[0])
return
def rand_str(strlen=32, select_from=letters + digits):
return("".join([random.choice(select_from) for _x in range(0, strlen)]))
def rand_user_password(pwlen=9):
selfrom = (letters.translate(None, 'loLOI') +
digits.translate(None, '01'))
return(rand_str(pwlen, select_from=selfrom))
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