diff options
Diffstat (limited to 'cloudinit/config/cc_set_passwords.py')
| -rwxr-xr-x | cloudinit/config/cc_set_passwords.py | 105 |
1 files changed, 45 insertions, 60 deletions
diff --git a/cloudinit/config/cc_set_passwords.py b/cloudinit/config/cc_set_passwords.py index bb24d57f..5ef97376 100755 --- a/cloudinit/config/cc_set_passwords.py +++ b/cloudinit/config/cc_set_passwords.py @@ -68,16 +68,57 @@ import re import sys from cloudinit.distros import ug_util -from cloudinit import ssh_util +from cloudinit import log as logging +from cloudinit.ssh_util import update_ssh_config from cloudinit import util from string import ascii_letters, digits +LOG = logging.getLogger(__name__) + # We are removing certain 'painful' letters/numbers PW_SET = (''.join([x for x in ascii_letters + digits if x not in 'loLOI01'])) +def handle_ssh_pwauth(pw_auth, service_cmd=None, service_name="ssh"): + """Apply sshd PasswordAuthentication changes. + + @param pw_auth: config setting from 'pw_auth'. + Best given as True, False, or "unchanged". + @param service_cmd: The service command list (['service']) + @param service_name: The name of the sshd service for the system. + + @return: None""" + cfg_name = "PasswordAuthentication" + if service_cmd is None: + service_cmd = ["service"] + + if util.is_true(pw_auth): + cfg_val = 'yes' + elif util.is_false(pw_auth): + cfg_val = 'no' + else: + bmsg = "Leaving ssh config '%s' unchanged." % cfg_name + if pw_auth is None or pw_auth.lower() == 'unchanged': + LOG.debug("%s ssh_pwauth=%s", bmsg, pw_auth) + else: + LOG.warning("%s Unrecognized value: ssh_pwauth=%s", bmsg, pw_auth) + return + + updated = update_ssh_config({cfg_name: cfg_val}) + if not updated: + LOG.debug("No need to restart ssh service, %s not updated.", cfg_name) + return + + if 'systemctl' in service_cmd: + cmd = list(service_cmd) + ["restart", service_name] + else: + cmd = list(service_cmd) + [service_name, "restart"] + util.subp(cmd) + LOG.debug("Restarted the ssh daemon.") + + def handle(_name, cfg, cloud, log, args): if len(args) != 0: # if run from command line, and give args, wipe the chpasswd['list'] @@ -170,65 +211,9 @@ def handle(_name, cfg, cloud, log, args): if expired_users: log.debug("Expired passwords for: %s users", expired_users) - change_pwauth = False - pw_auth = None - if 'ssh_pwauth' in cfg: - if util.is_true(cfg['ssh_pwauth']): - change_pwauth = True - pw_auth = 'yes' - elif util.is_false(cfg['ssh_pwauth']): - change_pwauth = True - pw_auth = 'no' - elif str(cfg['ssh_pwauth']).lower() == 'unchanged': - log.debug('Leaving auth line unchanged') - change_pwauth = False - elif not str(cfg['ssh_pwauth']).strip(): - log.debug('Leaving auth line unchanged') - change_pwauth = False - elif not cfg['ssh_pwauth']: - log.debug('Leaving auth line unchanged') - change_pwauth = False - else: - msg = 'Unrecognized value %s for ssh_pwauth' % cfg['ssh_pwauth'] - util.logexc(log, msg) - - 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(l) for l in new_lines] - util.write_file(ssh_util.DEF_SSHD_CFG, "\n".join(lines), - copy_mode=True) - - try: - cmd = cloud.distro.init_cmd # Default service - cmd.append(cloud.distro.get_option('ssh_svcname', 'ssh')) - cmd.append('restart') - if 'systemctl' in cmd: # Switch action ordering - cmd[1], cmd[2] = cmd[2], cmd[1] - cmd = filter(None, cmd) # Remove empty arguments - util.subp(cmd) - log.debug("Restarted the ssh daemon") - except Exception: - util.logexc(log, "Restarting of the ssh daemon failed") + handle_ssh_pwauth( + cfg.get('ssh_pwauth'), service_cmd=cloud.distro.init_cmd, + service_name=cloud.distro.get_option('ssh_svcname', 'ssh')) if len(errors): log.debug("%s errors occured, re-raising the last one", len(errors)) |