1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
# vi: ts=4 expandtab
#
# Copyright (C) 2009-2010 Canonical Ltd.
# Copyright (C) 2012, 2013 Hewlett-Packard Development Company, L.P.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.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 sys
# Ensure this is aliased to a name not 'distros'
# since the module attribute 'distros'
# is a list of distros that are supported, not a sub-module
from cloudinit import distros as ds
from cloudinit import ssh_util
from cloudinit import util
from string import letters, digits # pylint: disable=W0402
# We are removing certain 'painful' letters/numbers
PW_SET = (letters.translate(None, 'loLOI') +
digits.translate(None, '01'))
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:
(users, _groups) = ds.normalize_users_groups(cfg, cloud.distro)
(user, _user_config) = ds.extract_default(users)
if user:
plist = "%s:%s" % (user, password)
else:
log.warn("No default or defined user to change password for.")
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) + '\n'
try:
log.debug("Changing password for %s:", users)
util.subp(['chpasswd'], ch_in)
except Exception as e:
errors.append(e)
util.logexc(log, "Failed to set passwords with chpasswd for %s",
users)
if len(randlist):
blurb = ("Set the following 'random' passwords\n",
'\n'.join(randlist))
sys.stderr.write("%s\n%s\n" % blurb)
if expire:
expired_users = []
for u in users:
try:
util.subp(['passwd', '--expire', u])
expired_users.append(u)
except Exception as e:
errors.append(e)
util.logexc(log, "Failed to set 'expire' for %s", u)
if expired_users:
log.debug("Expired passwords for: %s users", expired_users)
change_pwauth = False
pw_auth = None
if 'ssh_pwauth' in cfg:
change_pwauth = True
if util.is_true(cfg['ssh_pwauth']):
pw_auth = 'yes'
if util.is_false(cfg['ssh_pwauth']):
pw_auth = 'no'
if change_pwauth:
replaced_auth = False
# See: man sshd_config
old_lines = ssh_util.parse_ssh_config(ssh_util.DEF_SSHD_CFG)
new_lines = []
i = 0
for (i, line) in enumerate(old_lines):
# Keywords are case-insensitive and arguments are case-sensitive
if line.key == 'passwordauthentication':
log.debug("Replacing auth line %s with %s", i + 1, pw_auth)
replaced_auth = True
line.value = pw_auth
new_lines.append(line)
if not replaced_auth:
log.debug("Adding new auth line %s", i + 1)
replaced_auth = True
new_lines.append(ssh_util.SshdConfigLine('',
'PasswordAuthentication',
pw_auth))
lines = [str(e) for e in new_lines]
util.write_file(ssh_util.DEF_SSHD_CFG, "\n".join(lines))
try:
cmd = cloud.distro.init_cmd
cmd.append(cloud.distro.get_option('ssh_svcname', 'ssh'))
cmd.append('restart')
util.subp(cmd)
log.debug("Restarted the ssh daemon")
except:
util.logexc(log, "Restarting of the ssh daemon failed")
if len(errors):
log.debug("%s errors occured, re-raising the last one", len(errors))
raise errors[-1]
def rand_user_password(pwlen=9):
return util.rand_str(pwlen, select_from=PW_SET)
|
