mirror of
https://github.com/laurivosandi/certidude
synced 2024-12-23 00:25:18 +00:00
Migrate to python-gssapi
This commit is contained in:
parent
51d7dffa9b
commit
02482e8d79
@ -197,8 +197,7 @@ Install dependencies:
|
||||
|
||||
.. code:: bash
|
||||
|
||||
apt-get install samba-common-bin krb5-user ldap-utils
|
||||
pip install pykerberos
|
||||
apt-get install samba-common-bin krb5-user ldap-utils python-gssapi
|
||||
|
||||
Reset Samba client configuration in ``/etc/samba/smb.conf``, adjust
|
||||
workgroup and realm accordingly:
|
||||
|
||||
@ -5,6 +5,7 @@ import logging
|
||||
import os
|
||||
import re
|
||||
import socket
|
||||
from base64 import b64decode
|
||||
from certidude.user import User
|
||||
from certidude.firewall import whitelist_subnets
|
||||
from certidude import config, const
|
||||
@ -12,25 +13,11 @@ from certidude import config, const
|
||||
logger = logging.getLogger("api")
|
||||
|
||||
if "kerberos" in config.AUTHENTICATION_BACKENDS:
|
||||
import kerberos # If this fails pip install kerberos
|
||||
ktname = os.getenv("KRB5_KTNAME")
|
||||
|
||||
if not ktname:
|
||||
click.echo("Kerberos keytab not specified, set environment variable 'KRB5_KTNAME'", err=True)
|
||||
exit(250)
|
||||
if not os.path.exists(ktname):
|
||||
click.echo("Kerberos keytab %s does not exist" % ktname, err=True)
|
||||
exit(248)
|
||||
|
||||
try:
|
||||
principal = kerberos.getServerPrincipalDetails("HTTP", const.FQDN)
|
||||
except kerberos.KrbError as exc:
|
||||
click.echo("Failed to initialize Kerberos, service principal is HTTP/%s, reason: %s" % (
|
||||
const.FQDN, exc), err=True)
|
||||
exit(249)
|
||||
else:
|
||||
click.echo("Kerberos enabled, service principal is HTTP/%s" % const.FQDN)
|
||||
|
||||
import gssapi
|
||||
os.environ["KRB5_KTNAME"] = config.KERBEROS_KEYTAB
|
||||
server_creds = gssapi.creds.Credentials(
|
||||
usage='accept',
|
||||
name=gssapi.names.Name('HTTP/%s'% (socket.gethostname())))
|
||||
click.echo("Accepting requests only for realm: %s" % const.DOMAIN)
|
||||
|
||||
|
||||
@ -55,37 +42,12 @@ def authenticate(optional=False):
|
||||
"No Kerberos ticket offered, are you sure you've logged in with domain user account?",
|
||||
["Negotiate"])
|
||||
|
||||
context = gssapi.sec_contexts.SecurityContext(creds=server_creds)
|
||||
token = ''.join(req.auth.split()[1:])
|
||||
context.step(b64decode(token))
|
||||
username, domain = str(context.initiator_name).split("@")
|
||||
|
||||
try:
|
||||
result, context = kerberos.authGSSServerInit("HTTP@" + const.FQDN)
|
||||
except kerberos.GSSError as ex:
|
||||
# TODO: logger.error
|
||||
raise falcon.HTTPForbidden("Forbidden",
|
||||
"Authentication System Failure: %s(%s)" % (ex.args[0][0], ex.args[1][0],))
|
||||
|
||||
try:
|
||||
result = kerberos.authGSSServerStep(context, token)
|
||||
except kerberos.GSSError as ex:
|
||||
kerberos.authGSSServerClean(context)
|
||||
logger.error(u"Kerberos authentication failed from %s. "
|
||||
"GSSAPI error: %s (%d), perhaps the clock skew it too large?",
|
||||
req.context.get("remote_addr"),
|
||||
ex.args[0][0], ex.args[0][1])
|
||||
raise falcon.HTTPForbidden("Forbidden",
|
||||
"GSSAPI error: %s (%d), perhaps the clock skew it too large?" % (ex.args[0][0], ex.args[0][1]))
|
||||
except kerberos.KrbError as ex:
|
||||
kerberos.authGSSServerClean(context)
|
||||
logger.error(u"Kerberos authentication failed from %s. "
|
||||
"Kerberos error: %s (%d)",
|
||||
req.context.get("remote_addr"),
|
||||
ex.args[0][0], ex.args[0][1])
|
||||
raise falcon.HTTPForbidden("Forbidden",
|
||||
"Kerberos error: %s" % (ex.args[0],))
|
||||
|
||||
user_principal = kerberos.authGSSServerUserName(context)
|
||||
username, domain = user_principal.split("@")
|
||||
if domain.lower() != const.DOMAIN:
|
||||
if domain.lower() != const.DOMAIN.lower():
|
||||
raise falcon.HTTPForbidden("Forbidden",
|
||||
"Invalid realm supplied")
|
||||
|
||||
@ -98,29 +60,9 @@ def authenticate(optional=False):
|
||||
# Attempt to look up real user
|
||||
req.context["user"] = User.objects.get(username)
|
||||
|
||||
try:
|
||||
kerberos.authGSSServerClean(context)
|
||||
except kerberos.GSSError as ex:
|
||||
logger.error(u"Kerberos authentication failed for user %s from %s. "
|
||||
"Authentication system failure: %s (%d)",
|
||||
user, req.context.get("remote_addr"),
|
||||
ex.args[0][0], ex.args[0][1])
|
||||
raise falcon.HTTPUnauthorized("Authentication System Failure %s (%s)" % (ex.args[0][0], ex.args[1][0]))
|
||||
|
||||
if result == kerberos.AUTH_GSS_COMPLETE:
|
||||
logger.debug(u"Succesfully authenticated user %s for %s from %s",
|
||||
req.context["user"], req.env["PATH_INFO"], req.context["remote_addr"])
|
||||
return func(resource, req, resp, *args, **kwargs)
|
||||
elif result == kerberos.AUTH_GSS_CONTINUE:
|
||||
logger.error(u"Kerberos authentication failed for user %s from %s. "
|
||||
"Unauthorized, tried GSSAPI.",
|
||||
user, req.context.get("remote_addr"))
|
||||
raise falcon.HTTPUnauthorized("Unauthorized", "Tried GSSAPI")
|
||||
else:
|
||||
logger.error(u"Kerberos authentication failed for user %s from %s. "
|
||||
"Forbidden, tried GSSAPI.",
|
||||
user, req.context.get("remote_addr"))
|
||||
raise falcon.HTTPForbidden("Forbidden", "Tried GSSAPI")
|
||||
|
||||
|
||||
def ldap_authenticate(resource, req, resp, *args, **kwargs):
|
||||
@ -186,7 +128,6 @@ def authenticate(optional=False):
|
||||
if not req.auth.startswith("Basic "):
|
||||
raise falcon.HTTPForbidden("Forbidden", "Bad header: %s" % req.auth)
|
||||
|
||||
from base64 import b64decode
|
||||
basic, token = req.auth.split(" ", 1)
|
||||
user, passwd = b64decode(token).split(":", 1)
|
||||
|
||||
|
||||
@ -18,6 +18,7 @@ AUTHENTICATION_BACKENDS = set([j for j in
|
||||
AUTHORIZATION_BACKEND = cp.get("authorization", "backend") # whitelist, ldap, posix
|
||||
ACCOUNTS_BACKEND = cp.get("accounts", "backend") # posix, ldap
|
||||
|
||||
KERBEROS_KEYTAB = cp.get("authentication", "kerberos keytab")
|
||||
LDAP_AUTHENTICATION_URI = cp.get("authentication", "ldap uri")
|
||||
LDAP_GSSAPI_CRED_CACHE = cp.get("accounts", "ldap gssapi credential cache")
|
||||
LDAP_ACCOUNTS_URI = cp.get("accounts", "ldap uri")
|
||||
|
||||
@ -10,6 +10,7 @@ backends = pam
|
||||
;backends = kerberos ldap
|
||||
;backends = kerberos pam
|
||||
ldap uri = ldaps://dc1.example.com
|
||||
kerberos keytab = FILE:{{ kerberos_keytab }}
|
||||
|
||||
[accounts]
|
||||
# The accounts backend specifies how the user's given name, surname and e-mail
|
||||
|
||||
@ -4,7 +4,6 @@ After=network.target
|
||||
|
||||
[Service]
|
||||
Environment=PYTHON_EGG_CACHE=/tmp/.cache
|
||||
Environment=KRB5_KTNAME={{kerberos_keytab}}
|
||||
PIDFile=/run/certidude/server.pid
|
||||
ExecReload=/bin/kill -s HUP $MAINPID
|
||||
ExecStop=/bin/kill -s TERM $MAINPID
|
||||
|
||||
Loading…
Reference in New Issue
Block a user