da455de597
Fedora's ssh service name is named 'sshd', Ubuntu's is 'ssh'. This makes that configurable. TODO: document ssh_svcname. taken from git://pkgs.fedoraproject.org/cloud-init.git commit 87f33190f43d2b26cced4597e7298835024466c2 Author: Garrett Holmstrom <gholms@fedoraproject.org> Patch11: cloud-init-0.6.2-sshsvc.patch
125 lines
4.0 KiB
Python
125 lines
4.0 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2009-2010 Canonical Ltd.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import cloudinit.util as util
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import subprocess
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import sys
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import random
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import string
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def handle(name,cfg,cloud,log,args):
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if len(args) != 0:
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# if run from command line, and give args, wipe the chpasswd['list']
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password = args[0]
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if 'chpasswd' in cfg and 'list' in cfg['chpasswd']:
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del cfg['chpasswd']['list']
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else:
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password = util.get_cfg_option_str(cfg,"password",None)
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expire = True
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pw_auth = "no"
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change_pwauth = False
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plist = None
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if 'chpasswd' in cfg:
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chfg = cfg['chpasswd']
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plist = util.get_cfg_option_str(chfg,'list',plist)
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expire = util.get_cfg_option_bool(chfg,'expire', expire)
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if not plist and password:
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user = util.get_cfg_option_str(cfg,"user","ubuntu")
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plist = "%s:%s" % (user, password)
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errors = []
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if plist:
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plist_in = []
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randlist = []
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users = []
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for line in plist.splitlines():
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u,p = line.split(':',1)
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if p == "R" or p == "RANDOM":
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p = rand_user_password()
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randlist.append("%s:%s" % (u,p))
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plist_in.append("%s:%s" % (u,p))
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users.append(u)
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ch_in = '\n'.join(plist_in)
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try:
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util.subp(['chpasswd'], ch_in)
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log.debug("changed password for %s:" % users)
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except Exception as e:
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errors.append(e)
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log.warn("failed to set passwords with chpasswd: %s" % e)
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if len(randlist):
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sys.stdout.write("%s\n%s\n" % ("Set the following passwords\n",
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'\n'.join(randlist) ))
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if expire:
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enum=len(errors)
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for u in users:
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try:
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util.subp(['passwd', '--expire', u])
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except Exception as e:
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errors.append(e)
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log.warn("failed to expire account for %s" % u )
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if enum == len(errors):
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log.debug("expired passwords for: %s" % u)
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if 'ssh_pwauth' in cfg:
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val = str(cfg['ssh_pwauth']).lower()
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if val in ( "true", "1", "yes"):
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pw_auth="yes"
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change_pwauth=True
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elif val in ( "false", "0", "no"):
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pw_auth="no"
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change_pwauth=True
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else:
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change_pwauth=False
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if change_pwauth:
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pa_s = "\(#*\)\(PasswordAuthentication[[:space:]]\+\)\(yes\|no\)"
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msg = "set PasswordAuthentication to '%s'" % pw_auth
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try:
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cmd = [ 'sed', '-i', 's,%s,\\2%s,' % (pa_s, pw_auth),
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'/etc/ssh/sshd_config' ]
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util.subp(cmd)
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log.debug(msg)
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except Exception as e:
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log.warn("failed %s" % msg)
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errors.append(e)
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try:
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p = util.subp(['service', cfg.get('ssh_svcname', 'ssh'), 'restart'])
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log.debug("restarted sshd")
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except:
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log.warn("restart of ssh failed")
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if len(errors):
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raise(errors[0])
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return
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def rand_str(strlen=32, select_from=string.letters+string.digits):
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return("".join([random.choice(select_from) for x in range(0, strlen)]))
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def rand_user_password(pwlen=9):
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selfrom=(string.letters.translate(None,'loLOI') +
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string.digits.translate(None,'01'))
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return(rand_str(pwlen,select_from=selfrom))
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