/usr/lib/python2.7/dist-packages/ipaserver/install/httpinstance.py is in python-ipaserver 4.7.0~pre1+git20180411-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (C) 2007 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import print_function
from __future__ import absolute_import
import logging
import os
import glob
import errno
import shlex
import pipes
import tempfile
from augeas import Augeas
import dbus
from ipalib.install import certmonger
from ipapython import ipaldap
from ipaserver.install import replication
from ipaserver.install import service
from ipaserver.install import certs
from ipaserver.install import installutils
from ipapython import dogtag
from ipapython import ipautil
from ipapython.dn import DN
import ipapython.errors
from ipaserver.install import sysupgrade
from ipalib import api, x509
from ipalib.constants import IPAAPI_USER
from ipaplatform.constants import constants
from ipaplatform.tasks import tasks
from ipaplatform.paths import paths
from ipaplatform import services, NAME
logger = logging.getLogger(__name__)
HTTPD_USER = constants.HTTPD_USER
KDCPROXY_USER = constants.KDCPROXY_USER
OCSP_DIRECTIVE = 'SSLOCSPEnable'
OCSP_ENABLED = 'ocsp_enabled'
class WebGuiInstance(service.SimpleServiceInstance):
def __init__(self):
service.SimpleServiceInstance.__init__(self, "ipa_webgui")
class HTTPInstance(service.Service):
def __init__(self, fstore=None, cert_nickname='Server-Cert',
api=api):
super(HTTPInstance, self).__init__(
"httpd",
service_desc="the web interface",
fstore=fstore,
api=api,
service_prefix=u'HTTP',
service_user=HTTPD_USER,
keytab=paths.HTTP_KEYTAB)
self.cacert_nickname = None
self.cert_nickname = cert_nickname
self.ca_is_configured = True
self.keytab_user = constants.GSSPROXY_USER
subject_base = ipautil.dn_attribute_property('_subject_base')
def create_instance(self, realm, fqdn, domain_name, dm_password=None,
pkcs12_info=None,
subject_base=None, auto_redirect=True, ca_file=None,
ca_is_configured=None, promote=False,
master_fqdn=None):
self.fqdn = fqdn
self.realm = realm
self.domain = domain_name
self.dm_password = dm_password
self.suffix = ipautil.realm_to_suffix(self.realm)
self.pkcs12_info = pkcs12_info
self.cert = None
self.subject_base = subject_base
self.sub_dict = dict(
REALM=realm,
FQDN=fqdn,
DOMAIN=self.domain,
AUTOREDIR='' if auto_redirect else '#',
CRL_PUBLISH_PATH=paths.PKI_CA_PUBLISH_DIR,
FONTS_DIR=paths.FONTS_DIR,
GSSAPI_SESSION_KEY=paths.GSSAPI_SESSION_KEY,
IPA_CUSTODIA_SOCKET=paths.IPA_CUSTODIA_SOCKET,
IPA_CCACHES=paths.IPA_CCACHES,
WSGI_PREFIX_DIR=paths.WSGI_PREFIX_DIR,
)
self.ca_file = ca_file
if ca_is_configured is not None:
self.ca_is_configured = ca_is_configured
self.promote = promote
self.master_fqdn = master_fqdn
self.step("stopping httpd", self.__stop)
self.step("backing up ssl.conf", self.backup_ssl_conf)
self.step("disabling nss.conf", self.disable_nss_conf)
self.step("configuring mod_ssl certificate paths",
self.configure_mod_ssl_certs)
self.step("setting mod_ssl protocol list to TLSv1.0 - TLSv1.2",
self.set_mod_ssl_protocol)
self.step("configuring mod_ssl log directory",
self.set_mod_ssl_logdir)
self.step("disabling mod_ssl OCSP", self.disable_mod_ssl_ocsp)
self.step("adding URL rewriting rules", self.__add_include)
self.step("configuring httpd", self.__configure_http)
self.step("setting up httpd keytab", self.request_service_keytab)
self.step("configuring Gssproxy", self.configure_gssproxy)
self.step("setting up ssl", self.__setup_ssl)
if self.ca_is_configured:
self.step("configure certmonger for renewals",
self.configure_certmonger_renewal_guard)
self.step("publish CA cert", self.__publish_ca_cert)
self.step("clean up any existing httpd ccaches",
self.remove_httpd_ccaches)
self.step("configuring SELinux for httpd", self.configure_selinux_for_httpd)
if not self.is_kdcproxy_configured():
self.step("create KDC proxy config", self.create_kdcproxy_conf)
self.step("enable KDC proxy", self.enable_kdcproxy)
self.step("starting httpd", self.start)
self.step("configuring httpd to start on boot", self.__enable)
self.step("enabling oddjobd", self.enable_and_start_oddjobd)
self.start_creation()
def __stop(self):
self.backup_state("running", self.is_running())
self.stop()
def __enable(self):
self.backup_state("enabled", self.is_enabled())
# We do not let the system start IPA components on its own,
# Instead we reply on the IPA init script to start only enabled
# components as found in our LDAP configuration tree
self.ldap_enable('HTTP', self.fqdn, None, self.suffix)
def configure_selinux_for_httpd(self):
try:
tasks.set_selinux_booleans(constants.SELINUX_BOOLEAN_HTTPD,
self.backup_state)
except ipapython.errors.SetseboolError as e:
self.print_msg(e.format_service_warning('web interface'))
def remove_httpd_ccaches(self):
# Clean up existing ccaches
# Make sure that empty env is passed to avoid passing KRB5CCNAME from
# current env
installutils.remove_file(paths.HTTP_CCACHE)
for f in os.listdir(paths.IPA_CCACHES):
os.remove(os.path.join(paths.IPA_CCACHES, f))
def __configure_http(self):
self.update_httpd_service_ipa_conf()
self.update_httpd_wsgi_conf()
target_fname = paths.HTTPD_IPA_CONF
http_txt = ipautil.template_file(
os.path.join(paths.USR_SHARE_IPA_DIR,
"ipa.conf.template"),
self.sub_dict)
self.fstore.backup_file(paths.HTTPD_IPA_CONF)
http_fd = open(target_fname, "w")
http_fd.write(http_txt)
http_fd.close()
os.chmod(target_fname, 0o644)
target_fname = paths.HTTPD_IPA_REWRITE_CONF
http_txt = ipautil.template_file(
os.path.join(paths.USR_SHARE_IPA_DIR,
"ipa-rewrite.conf.template"),
self.sub_dict)
self.fstore.backup_file(paths.HTTPD_IPA_REWRITE_CONF)
http_fd = open(target_fname, "w")
http_fd.write(http_txt)
http_fd.close()
os.chmod(target_fname, 0o644)
def configure_gssproxy(self):
tasks.configure_http_gssproxy_conf(IPAAPI_USER)
services.knownservices.gssproxy.restart()
def get_mod_nss_nickname(self):
cert = installutils.get_directive(paths.HTTPD_NSS_CONF, 'NSSNickname')
nickname = installutils.unquote_directive_value(cert, quote_char="'")
return nickname
def backup_ssl_conf(self):
self.fstore.backup_file(paths.HTTPD_SSL_CONF)
self.fstore.backup_file(paths.HTTPD_SSL_SITE_CONF)
def disable_nss_conf(self):
"""
Backs up and removes the original nss.conf file.
There is no safe way to co-exist since there is no safe port
to make mod_nss use, disable it completely.
"""
if os.path.exists(paths.HTTPD_NSS_CONF):
# check that we don't have a backup already
# (mod_nss -> mod_ssl upgrade scenario)
if not self.fstore.has_file(paths.HTTPD_NSS_CONF):
self.fstore.backup_file(paths.HTTPD_NSS_CONF)
installutils.remove_file(paths.HTTPD_NSS_CONF)
def set_mod_ssl_protocol(self):
installutils.set_directive(paths.HTTPD_SSL_CONF,
'SSLProtocol',
'+TLSv1 +TLSv1.1 +TLSv1.2', False)
def set_mod_ssl_logdir(self):
if NAME is not 'debian':
installutils.set_directive(paths.HTTPD_SSL_CONF,
'ErrorLog',
'logs/error_log', False)
installutils.set_directive(paths.HTTPD_SSL_CONF,
'TransferLog',
'logs/access_log', False)
def disable_mod_ssl_ocsp(self):
if sysupgrade.get_upgrade_state('http', OCSP_ENABLED) is None:
self.__disable_mod_ssl_ocsp()
sysupgrade.set_upgrade_state('http', OCSP_ENABLED, False)
def __disable_mod_ssl_ocsp(self):
aug = Augeas(flags=Augeas.NO_LOAD | Augeas.NO_MODL_AUTOLOAD)
aug.set('/augeas/load/Httpd/lens', 'Httpd.lns')
aug.set('/augeas/load/Httpd/incl', paths.HTTPD_SSL_CONF)
aug.load()
path = '/files{}/VirtualHost'.format(paths.HTTPD_SSL_CONF)
ocsp_path = '{}/directive[.="{}"]'.format(path, OCSP_DIRECTIVE)
ocsp_arg = '{}/arg'.format(ocsp_path)
ocsp_comment = '{}/#comment[.="{}"]'.format(path, OCSP_DIRECTIVE)
ocsp_dir = aug.get(ocsp_path)
# there is SSLOCSPEnable directive in nss.conf file, comment it
# otherwise just do nothing
if ocsp_dir is not None:
ocsp_state = aug.get(ocsp_arg)
aug.remove(ocsp_arg)
aug.rename(ocsp_path, '#comment')
aug.set(ocsp_comment, '{} {}'.format(OCSP_DIRECTIVE, ocsp_state))
aug.save()
def __add_include(self):
"""This should run after __set_mod_nss_port so is already backed up"""
if installutils.update_file(paths.HTTPD_SSL_SITE_CONF,
'</VirtualHost>',
'Include {path}\n'
'</VirtualHost>'.format(
path=paths.HTTPD_IPA_REWRITE_CONF)
) != 0:
self.print_msg("Adding Include conf.d/ipa-rewrite to "
"%s failed." % paths.HTTPD_SSL_SITE_CONF)
def configure_certmonger_renewal_guard(self):
certmonger = services.knownservices.certmonger
certmonger_stopped = not certmonger.is_running()
if certmonger_stopped:
certmonger.start()
try:
bus = dbus.SystemBus()
obj = bus.get_object('org.fedorahosted.certmonger',
'/org/fedorahosted/certmonger')
iface = dbus.Interface(obj, 'org.fedorahosted.certmonger')
path = iface.find_ca_by_nickname('IPA')
if path:
ca_obj = bus.get_object('org.fedorahosted.certmonger', path)
ca_iface = dbus.Interface(ca_obj,
'org.freedesktop.DBus.Properties')
helper = ca_iface.Get('org.fedorahosted.certmonger.ca',
'external-helper')
if helper:
args = shlex.split(helper)
if args[0] != paths.IPA_SERVER_GUARD:
self.backup_state('certmonger_ipa_helper', helper)
args = [paths.IPA_SERVER_GUARD] + args
helper = ' '.join(pipes.quote(a) for a in args)
ca_iface.Set('org.fedorahosted.certmonger.ca',
'external-helper', helper)
finally:
if certmonger_stopped:
certmonger.stop()
def __setup_ssl(self):
key_passwd_file = paths.HTTPD_PASSWD_FILE_FMT.format(host=api.env.host)
with open(key_passwd_file, 'wb') as f:
os.fchmod(f.fileno(), 0o600)
pkey_passwd = ipautil.ipa_generate_password().encode('utf-8')
f.write(pkey_passwd)
if self.pkcs12_info:
p12_certs, p12_priv_keys = certs.pkcs12_to_certkeys(
*self.pkcs12_info)
keys_dict = {
k.public_key().public_numbers(): k
for k in p12_priv_keys
}
certs_keys = [
(c, keys_dict.get(c.public_key().public_numbers()))
for c in p12_certs
]
server_certs_keys = [
(c, k) for c, k in certs_keys if k is not None
]
if not server_certs_keys:
raise RuntimeError(
"Could not find a suitable server cert in import in %s"
% self.pkcs12_info[0]
)
# We only handle one server cert
self.cert = server_certs_keys[0][0]
x509.write_certificate(self.cert, paths.HTTPD_CERT_FILE)
x509.write_pem_private_key(
server_certs_keys[0][1],
paths.HTTPD_KEY_FILE,
passwd=pkey_passwd
)
if self.ca_is_configured:
self.start_tracking_certificates()
self.add_cert_to_service()
else:
if not self.promote:
ca_args = [
paths.CERTMONGER_DOGTAG_SUBMIT,
'--ee-url', 'https://%s:8443/ca/ee/ca' % self.fqdn,
'--certfile', paths.RA_AGENT_PEM,
'--keyfile', paths.RA_AGENT_KEY,
'--cafile', paths.IPA_CA_CRT,
'--agent-submit'
]
helper = " ".join(ca_args)
prev_helper = certmonger.modify_ca_helper('IPA', helper)
else:
prev_helper = None
try:
certmonger.request_and_wait_for_cert(
certpath=(paths.HTTPD_CERT_FILE, paths.HTTPD_KEY_FILE),
principal=self.principal,
subject=str(DN(('CN', self.fqdn), self.subject_base)),
ca='IPA',
profile=dogtag.DEFAULT_PROFILE,
dns=[self.fqdn],
post_command='restart_httpd',
storage='FILE',
passwd_fname=key_passwd_file
)
finally:
if prev_helper is not None:
certmonger.modify_ca_helper('IPA', prev_helper)
self.cert = x509.load_certificate_from_file(
paths.HTTPD_CERT_FILE
)
if prev_helper is not None:
self.add_cert_to_service()
with open(paths.HTTPD_KEY_FILE, 'rb') as f:
priv_key = x509.load_pem_private_key(
f.read(), pkey_passwd, backend=x509.default_backend())
# Verify we have a valid server cert
if (priv_key.public_key().public_numbers()
!= self.cert.public_key().public_numbers()):
raise RuntimeError(
"The public key of the issued HTTPD service certificate "
"does not match its private key.")
sysupgrade.set_upgrade_state('ssl.conf', 'migrated_to_mod_ssl', True)
def configure_mod_ssl_certs(self):
"""Configure the mod_ssl certificate directives"""
installutils.set_directive(paths.HTTPD_SSL_SITE_CONF,
'SSLCertificateFile',
paths.HTTPD_CERT_FILE, False)
installutils.set_directive(paths.HTTPD_SSL_SITE_CONF,
'SSLCertificateKeyFile',
paths.HTTPD_KEY_FILE, False)
installutils.set_directive(
paths.HTTPD_SSL_CONF,
'SSLPassPhraseDialog',
'exec:{passread}'.format(passread=paths.IPA_HTTPD_PASSWD_READER),
False)
installutils.set_directive(paths.HTTPD_SSL_SITE_CONF,
'SSLCACertificateFile',
paths.IPA_CA_CRT, False)
os.system('sed -i "/snakeoil.pem/d" /etc/apache2/sites-available/default-ssl.conf')
def __publish_ca_cert(self):
ca_subject = self.cert.issuer
certlist = x509.load_certificate_list_from_file(paths.IPA_CA_CRT)
ca_certs = [c for c in certlist if c.subject == ca_subject]
if not ca_certs:
raise RuntimeError("HTTPD cert was issued by an unknown CA.")
# at this time we can assume any CA cert will be valid since this is
# only run during installation
x509.write_certificate(ca_certs[0], paths.CA_CRT)
def is_kdcproxy_configured(self):
"""Check if KDC proxy has already been configured in the past"""
return os.path.isfile(paths.HTTPD_IPA_KDCPROXY_CONF)
def enable_kdcproxy(self):
"""Add ipaConfigString=kdcProxyEnabled to cn=KDC"""
service.set_service_entry_config(
'KDC', self.fqdn, [u'kdcProxyEnabled'], self.suffix)
def create_kdcproxy_conf(self):
"""Create ipa-kdc-proxy.conf in /etc/ipa/kdcproxy"""
target_fname = paths.HTTPD_IPA_KDCPROXY_CONF
sub_dict = dict(KDCPROXY_CONFIG=paths.KDCPROXY_CONFIG)
http_txt = ipautil.template_file(
os.path.join(paths.USR_SHARE_IPA_DIR,
"ipa-kdc-proxy.conf.template"),
sub_dict)
self.fstore.backup_file(target_fname)
with open(target_fname, 'w') as f:
f.write(http_txt)
os.chmod(target_fname, 0o644)
def enable_and_start_oddjobd(self):
oddjobd = services.service('oddjobd', api)
self.sstore.backup_state('oddjobd', 'running', oddjobd.is_running())
self.sstore.backup_state('oddjobd', 'enabled', oddjobd.is_enabled())
try:
oddjobd.enable()
oddjobd.start()
except Exception as e:
logger.critical("Unable to start oddjobd: %s", str(e))
def update_httpd_service_ipa_conf(self):
tasks.configure_httpd_service_ipa_conf()
def update_httpd_wsgi_conf(self):
tasks.configure_httpd_wsgi_conf()
def uninstall(self):
if self.is_configured():
self.print_msg("Unconfiguring web server")
running = self.restore_state("running")
enabled = self.restore_state("enabled")
# Restore oddjobd to its original state
oddjobd = services.service('oddjobd', api)
if not self.sstore.restore_state('oddjobd', 'running'):
try:
oddjobd.stop()
except Exception:
pass
if not self.sstore.restore_state('oddjobd', 'enabled'):
try:
oddjobd.disable()
except Exception:
pass
self.stop_tracking_certificates()
helper = self.restore_state('certmonger_ipa_helper')
if helper:
bus = dbus.SystemBus()
obj = bus.get_object('org.fedorahosted.certmonger',
'/org/fedorahosted/certmonger')
iface = dbus.Interface(obj, 'org.fedorahosted.certmonger')
path = iface.find_ca_by_nickname('IPA')
if path:
ca_obj = bus.get_object('org.fedorahosted.certmonger', path)
ca_iface = dbus.Interface(ca_obj,
'org.freedesktop.DBus.Properties')
ca_iface.Set('org.fedorahosted.certmonger.ca',
'external-helper', helper)
for f in [paths.HTTPD_IPA_CONF, paths.HTTPD_SSL_CONF,
paths.HTTPD_SSL_SITE_CONF, paths.HTTPD_NSS_CONF]:
try:
self.fstore.restore_file(f)
except ValueError as error:
logger.debug("%s", error)
# Remove the configuration files we create
installutils.remove_keytab(self.keytab)
remove_files = [
paths.HTTP_CCACHE,
paths.HTTPD_CERT_FILE,
paths.HTTPD_KEY_FILE,
paths.HTTPD_PASSWD_FILE_FMT.format(host=api.env.host),
paths.HTTPD_IPA_REWRITE_CONF,
paths.HTTPD_IPA_CONF,
paths.HTTPD_IPA_PKI_PROXY_CONF,
paths.HTTPD_IPA_KDCPROXY_CONF_SYMLINK,
paths.HTTPD_IPA_KDCPROXY_CONF,
paths.GSSPROXY_CONF,
paths.GSSAPI_SESSION_KEY,
paths.HTTPD_PASSWORD_CONF,
paths.SYSTEMD_SYSTEM_HTTPD_IPA_CONF,
]
# NSS DB backups
remove_files.extend(
glob.glob(os.path.join(paths.HTTPD_ALIAS_DIR, '*.ipasave'))
)
if paths.HTTPD_IPA_WSGI_MODULES_CONF is not None:
remove_files.append(paths.HTTPD_IPA_WSGI_MODULES_CONF)
for filename in remove_files:
installutils.remove_file(filename)
try:
os.rmdir(paths.SYSTEMD_SYSTEM_HTTPD_D_DIR)
except OSError as e:
if e.errno not in {errno.ENOENT, errno.ENOTEMPTY}:
logger.error(
"Failed to remove directory %s",
paths.SYSTEMD_SYSTEM_HTTPD_D_DIR
)
# Restore SELinux boolean states
boolean_states = {name: self.restore_state(name)
for name in constants.SELINUX_BOOLEAN_HTTPD}
try:
tasks.set_selinux_booleans(boolean_states)
except ipapython.errors.SetseboolError as e:
self.print_msg('WARNING: ' + str(e))
if running:
self.restart()
# disabled by default, by ldap_enable()
if enabled:
self.enable()
def stop_tracking_certificates(self):
try:
certmonger.stop_tracking(certfile=paths.HTTPD_CERT_FILE)
except RuntimeError as e:
logger.error("certmonger failed to stop tracking certificate: %s",
str(e))
def start_tracking_certificates(self):
cert = x509.load_certificate_from_file(paths.HTTPD_CERT_FILE)
if certs.is_ipa_issued_cert(api, cert):
request_id = certmonger.start_tracking(
certpath=(paths.HTTPD_CERT_FILE, paths.HTTPD_KEY_FILE),
post_command='restart_httpd', storage='FILE'
)
subject = str(DN(cert.subject))
certmonger.add_principal(request_id, self.principal)
certmonger.add_subject(request_id, subject)
else:
logger.debug("Will not track HTTP server cert %s as it is not "
"issued by IPA", cert.subject)
def request_service_keytab(self):
super(HTTPInstance, self).request_service_keytab()
if self.master_fqdn is not None:
service_dn = DN(('krbprincipalname', self.principal),
api.env.container_service,
self.suffix)
ldap_uri = ipaldap.get_ldap_uri(self.master_fqdn)
with ipaldap.LDAPClient(ldap_uri,
start_tls=not self.promote,
cacert=paths.IPA_CA_CRT) as remote_ldap:
if self.promote:
remote_ldap.gssapi_bind()
else:
remote_ldap.simple_bind(ipaldap.DIRMAN_DN,
self.dm_password)
replication.wait_for_entry(remote_ldap, service_dn, timeout=60)
def migrate_to_mod_ssl(self):
"""For upgrades only, migrate from mod_nss to mod_ssl"""
db = certs.CertDB(api.env.realm, nssdir=paths.HTTPD_ALIAS_DIR)
nickname = self.get_mod_nss_nickname()
with tempfile.NamedTemporaryFile() as temp:
pk12_password = ipautil.ipa_generate_password()
pk12_pwdfile = ipautil.write_tmp_file(pk12_password)
db.export_pkcs12(temp.name, pk12_pwdfile.name, nickname)
certs.install_pem_from_p12(temp.name,
pk12_password,
paths.HTTPD_CERT_FILE)
passwd_fname = paths.HTTPD_PASSWD_FILE_FMT.format(
host=api.env.host)
with open(passwd_fname, 'wb') as passwd_file:
os.fchmod(passwd_file.fileno(), 0o600)
passwd_file.write(
ipautil.ipa_generate_password().encode('utf-8'))
certs.install_key_from_p12(temp.name,
pk12_password,
paths.HTTPD_KEY_FILE,
out_passwd_fname=passwd_fname)
self.backup_ssl_conf()
self.configure_mod_ssl_certs()
self.set_mod_ssl_protocol()
self.set_mod_ssl_logdir()
self.__add_include()
self.cert = x509.load_certificate_from_file(paths.HTTPD_CERT_FILE)
if self.ca_is_configured:
db.untrack_server_cert(nickname)
self.start_tracking_certificates()
# remove nickname and CA certs from NSS db
self.disable_nss_conf()
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