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# 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 file is part of cloud-init. See LICENSE file for license information.
"""
SSH Import Id
-------------
**Summary:** import SSH id
This module imports SSH keys from either a public keyserver, usually launchpad
or github using ``ssh-import-id``. Keys are referenced by the username they are
associated with on the keyserver. The keyserver can be specified by prepending
either ``lp:`` for launchpad or ``gh:`` for github to the username.
**Internal name:** ``cc_ssh_import_id``
**Module frequency:** per instance
**Supported distros:** ubuntu, debian
**Config keys**::
ssh_import_id:
- user
- gh:user
- lp:user
"""
from cloudinit.distros import ug_util
from cloudinit import subp
from cloudinit import util
import pwd
# https://launchpad.net/ssh-import-id
distros = ['ubuntu', 'debian']
def handle(_name, cfg, cloud, log, args):
# import for "user: XXXXX"
if len(args) != 0:
user = args[0]
ids = []
if len(args) > 1:
ids = args[1:]
import_ssh_ids(ids, user, log)
return
# import for cloudinit created users
(users, _groups) = ug_util.normalize_users_groups(cfg, cloud.distro)
elist = []
for (user, user_cfg) in users.items():
import_ids = []
if user_cfg['default']:
import_ids = util.get_cfg_option_list(cfg, "ssh_import_id", [])
else:
try:
import_ids = user_cfg['ssh_import_id']
except Exception:
log.debug("User %s is not configured for ssh_import_id", user)
continue
try:
import_ids = util.uniq_merge(import_ids)
import_ids = [str(i) for i in import_ids]
except Exception:
log.debug("User %s is not correctly configured for ssh_import_id",
user)
continue
if not len(import_ids):
continue
try:
import_ssh_ids(import_ids, user, log)
except Exception as exc:
util.logexc(log, "ssh-import-id failed for: %s %s", user,
import_ids)
elist.append(exc)
if len(elist):
raise elist[0]
def import_ssh_ids(ids, user, log):
if not (user and ids):
log.debug("empty user(%s) or ids(%s). not importing", user, ids)
return
try:
pwd.getpwnam(user)
except KeyError as exc:
raise exc
cmd = ["sudo", "-Hu", user, "ssh-import-id"] + ids
log.debug("Importing SSH ids for user %s.", user)
try:
subp.subp(cmd, capture=False)
except subp.ProcessExecutionError as exc:
util.logexc(log, "Failed to run command to import %s SSH ids", user)
raise exc
# vi: ts=4 expandtab
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