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"""This handles authentication setup."""
import Bcfg2.Server.Plugin
class Account(Bcfg2.Server.Plugin.Plugin,
Bcfg2.Server.Plugin.Generator):
"""This module generates account config files,
based on an internal data repo:
static.(passwd|group|limits.conf) -> static entries
dyn.(passwd|group) -> dynamic entries (usually acquired from yp or somesuch)
useraccess -> users to be granted login access on some hosts
superusers -> users to be granted root privs on all hosts
rootlike -> users to be granted root privs on some hosts
"""
name = 'Account'
__author__ = 'bcfg-dev@mcs.anl.gov'
def __init__(self, core, datastore):
Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
Bcfg2.Server.Plugin.Generator.__init__(self)
self.Entries = {'ConfigFile': {'/etc/passwd': self.from_yp_cb,
'/etc/group': self.from_yp_cb,
'/etc/security/limits.conf': self.gen_limits_cb,
'/root/.ssh/authorized_keys': self.gen_root_keys_cb,
'/etc/sudoers': self.gen_sudoers}}
try:
self.repository = Bcfg2.Server.Plugin.DirectoryBacked(self.data,
self.core.fam)
except:
self.logger.error("Failed to load repos: %s, %s" % \
(self.data, "%s/ssh" % (self.data)))
raise Bcfg2.Server.Plugin.PluginInitError
def from_yp_cb(self, entry, metadata):
"""Build password file from cached yp data."""
fname = entry.attrib['name'].split('/')[-1]
entry.text = self.repository.entries["static.%s" % (fname)].data
entry.text += self.repository.entries["dyn.%s" % (fname)].data
perms = {'owner': 'root',
'group': 'root',
'perms': '0644'}
[entry.attrib.__setitem__(key, value) for (key, value) in \
list(perms.items())]
def gen_limits_cb(self, entry, metadata):
"""Build limits entries based on current ACLs."""
entry.text = self.repository.entries["static.limits.conf"].data
superusers = self.repository.entries["superusers"].data.split()
useraccess = [line.split(':') for line in \
self.repository.entries["useraccess"].data.split()]
users = [user for (user, host) in \
useraccess if host == metadata.hostname.split('.')[0]]
perms = {'owner': 'root',
'group': 'root',
'perms': '0600'}
[entry.attrib.__setitem__(key, value) for (key, value) in \
list(perms.items())]
entry.text += "".join(["%s hard maxlogins 1024\n" % uname for uname in superusers + users])
if "*" not in users:
entry.text += "* hard maxlogins 0\n"
def gen_root_keys_cb(self, entry, metadata):
"""Build root authorized keys file based on current ACLs."""
superusers = self.repository.entries['superusers'].data.split()
try:
rootlike = [line.split(':', 1) for line in \
self.repository.entries['rootlike'].data.split()]
superusers += [user for (user, host) in rootlike \
if host == metadata.hostname.split('.')[0]]
except:
pass
rdata = self.repository.entries
entry.text = "".join([rdata["%s.key" % user].data for user \
in superusers if \
("%s.key" % user) in rdata])
perms = {'owner': 'root',
'group': 'root',
'perms': '0600'}
[entry.attrib.__setitem__(key, value) for (key, value) \
in list(perms.items())]
def gen_sudoers(self, entry, metadata):
"""Build root authorized keys file based on current ACLs."""
superusers = self.repository.entries['superusers'].data.split()
try:
rootlike = [line.split(':', 1) for line in \
self.repository.entries['rootlike'].data.split()]
superusers += [user for (user, host) in rootlike \
if host == metadata.hostname.split('.')[0]]
except:
pass
entry.text = self.repository.entries['static.sudoers'].data
entry.text += "".join(["%s ALL=(ALL) ALL\n" % uname \
for uname in superusers])
perms = {'owner': 'root',
'group': 'root',
'perms': '0440'}
[entry.attrib.__setitem__(key, value) for (key, value) \
in list(perms.items())]
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