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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
# Copyright (C) 2016 Matt Dainty
#
# Author: Matt Dainty <matt@bodgit-n-scarper.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/>.
from cloudinit import distros
from cloudinit import helpers
from cloudinit import log as logging
from cloudinit import util
from cloudinit.distros.parsers.hostname import HostnameConf
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
class Distro(distros.Distro):
network_conf_fn = "/etc/network/interfaces"
init_cmd = ['rc-service'] # init scripts
def __init__(self, name, cfg, paths):
distros.Distro.__init__(self, name, cfg, paths)
# This will be used to restrict certain
# calls from repeatly happening (when they
# should only happen say once per instance...)
self._runner = helpers.Runners(paths)
self.osfamily = 'alpine'
cfg['ssh_svcname'] = 'sshd'
def apply_locale(self, locale, out_fn=None):
# No locale support yet
pass
def install_packages(self, pkglist):
self.update_package_sources()
self.package_command('add', pkgs=pkglist)
def _write_network(self, settings):
util.write_file(self.network_conf_fn, settings)
return ['all']
def _bring_up_interfaces(self, device_names):
use_all = False
for d in device_names:
if d == 'all':
use_all = True
if use_all:
return distros.Distro._bring_up_interface(self, '--all')
else:
return distros.Distro._bring_up_interfaces(self, device_names)
def _select_hostname(self, hostname, fqdn):
# Prefer the short hostname over the long
# fully qualified domain name
if not hostname:
return fqdn
return hostname
def _write_hostname(self, your_hostname, out_fn):
conf = None
try:
# Try to update the previous one
# so lets see if we can read it first.
conf = self._read_hostname_conf(out_fn)
except IOError:
pass
if not conf:
conf = HostnameConf('')
conf.set_hostname(your_hostname)
util.write_file(out_fn, str(conf), 0o644)
def _read_system_hostname(self):
sys_hostname = self._read_hostname(self.hostname_conf_fn)
return (self.hostname_conf_fn, sys_hostname)
def _read_hostname_conf(self, filename):
conf = HostnameConf(util.load_file(filename))
conf.parse()
return conf
def _read_hostname(self, filename, default=None):
hostname = None
try:
conf = self._read_hostname_conf(filename)
hostname = conf.hostname
except IOError:
pass
if not hostname:
return default
return hostname
def set_timezone(self, tz):
distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz))
def package_command(self, command, args=None, pkgs=None):
if pkgs is None:
pkgs = []
cmd = ['apk']
# Redirect output
cmd.append("--quiet")
if args and isinstance(args, str):
cmd.append(args)
elif args and isinstance(args, list):
cmd.extend(args)
if command:
cmd.append(command)
pkglist = util.expand_package_list('%s-%s', pkgs)
cmd.extend(pkglist)
# Allow the output of this to flow outwards (ie not be captured)
util.subp(cmd, capture=False)
def update_package_sources(self):
self._runner.run("update-sources", self.package_command,
["update"], freq=PER_INSTANCE)
def add_user(self, name, **kwargs):
if util.is_user(name):
LOG.info("User %s already exists, skipping." % name)
return
adduser_cmd = ['adduser', name, '-D']
log_adduser_cmd = ['adduser', name, '-D']
# Since we are creating users, we want to carefully validate the
# inputs. If something goes wrong, we can end up with a system
# that nobody can login to.
adduser_opts = {
"gecos": '-g',
"homedir": '-h',
"uid": '-u',
"shell": '-s',
}
adduser_flags = {
"system": '-S',
}
redact_opts = ['passwd']
# Check the values and create the command
for key, val in kwargs.items():
if key in adduser_opts and val and isinstance(val, str):
adduser_cmd.extend([adduser_opts[key], val])
# Redact certain fields from the logs
if key in redact_opts:
log_adduser_cmd.extend([adduser_opts[key], 'REDACTED'])
else:
log_adduser_cmd.extend([adduser_opts[key], val])
elif key in adduser_flags and val:
adduser_cmd.append(adduser_flags[key])
log_adduser_cmd.append(adduser_flags[key])
# Don't create the home directory if directed so or if the user is a
# system user
if 'no_create_home' in kwargs or 'system' in kwargs:
adduser_cmd.append('-H')
log_adduser_cmd.append('-H')
# Run the command
LOG.debug("Adding user %s", name)
try:
util.subp(adduser_cmd, logstring=log_adduser_cmd)
except Exception as e:
util.logexc(LOG, "Failed to create user %s", name)
raise e
# Unlock the user
LOG.debug("Unlocking user %s", name)
try:
util.subp(['passwd', '-u', name], logstring=['passwd', '-u', name])
except Exception as e:
util.logexc(LOG, "Failed to unlock user %s", name)
raise e
if 'groups' in kwargs:
groups = kwargs['groups']
if groups and isinstance(groups, str):
# Why are these even a single string in the first place?
groups = groups.split(',')
for group in groups:
try:
util.subp(['adduser', name, group], logstring=['adduser', name, group])
except Exception as e:
util.logexc(LOG, "Failed to add user %s to group %s", name, group)
raise e
|
