# Authors: Rob Crittenden # # 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 . # import os import os.path import tempfile from ipapython.ipa_log_manager import * import pwd import shutil import service import certs import dsinstance import installutils from ipapython import sysrestore from ipapython import ipautil from ipapython import services as ipaservices from ipalib import util, api HTTPD_DIR = "/etc/httpd" SSL_CONF = HTTPD_DIR + "/conf.d/ssl.conf" NSS_CONF = HTTPD_DIR + "/conf.d/nss.conf" selinux_warning = """WARNING: could not set selinux boolean httpd_can_network_connect to true. The web interface may not function correctly until this boolean is successfully change with the command: /usr/sbin/setsebool -P httpd_can_network_connect true Try updating the policycoreutils and selinux-policy packages. """ class WebGuiInstance(service.SimpleServiceInstance): def __init__(self): service.SimpleServiceInstance.__init__(self, "ipa_webgui") class HTTPInstance(service.Service): def __init__(self, fstore = None): service.Service.__init__(self, "httpd") if fstore: self.fstore = fstore else: self.fstore = sysrestore.FileStore('/var/lib/ipa/sysrestore') def create_instance(self, realm, fqdn, domain_name, dm_password=None, autoconfig=True, pkcs12_info=None, self_signed_ca=False, subject_base=None, auto_redirect=True): self.fqdn = fqdn self.realm = realm self.domain = domain_name self.dm_password = dm_password self.suffix = util.realm_to_suffix(self.realm) self.pkcs12_info = pkcs12_info self.self_signed_ca = self_signed_ca self.principal = "HTTP/%s@%s" % (self.fqdn, self.realm) self.dercert = None self.subject_base = subject_base self.sub_dict = {"REALM": realm, "FQDN": fqdn, "DOMAIN": self.domain, "AUTOREDIR": '' if auto_redirect else '#'} # get a connection to the DS self.ldap_connect() self.step("disabling mod_ssl in httpd", self.__disable_mod_ssl) self.step("setting mod_nss port to 443", self.__set_mod_nss_port) self.step("setting mod_nss password file", self.__set_mod_nss_passwordfile) self.step("enabling mod_nss renegotiate", self.enable_mod_nss_renegotiate) self.step("adding URL rewriting rules", self.__add_include) self.step("configuring httpd", self.__configure_http) self.step("setting up ssl", self.__setup_ssl) if autoconfig: self.step("setting up browser autoconfig", self.__setup_autoconfig) self.step("publish CA cert", self.__publish_ca_cert) self.step("creating a keytab for httpd", self.__create_http_keytab) self.step("clean up any existing httpd ccache", self.remove_httpd_ccache) self.step("configuring SELinux for httpd", self.__selinux_config) self.step("restarting httpd", self.__start) self.step("configuring httpd to start on boot", self.__enable) self.start_creation("Configuring the web interface", 60) def __start(self): self.backup_state("running", self.is_running()) self.restart() def __enable(self): self.backup_state("enabled", self.is_running()) # 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, self.dm_password, self.suffix) def __selinux_config(self): selinux=0 try: if (os.path.exists('/usr/sbin/selinuxenabled')): ipautil.run(["/usr/sbin/selinuxenabled"]) selinux=1 except ipautil.CalledProcessError: # selinuxenabled returns 1 if not enabled pass if selinux: try: # returns e.g. "httpd_can_network_connect --> off" (stdout, stderr, returncode) = ipautil.run(["/usr/sbin/getsebool", "httpd_can_network_connect"]) self.backup_state("httpd_can_network_connect", stdout.split()[2]) except: pass # Allow apache to connect to the turbogears web gui # This can still fail even if selinux is enabled try: ipautil.run(["/usr/sbin/setsebool", "-P", "httpd_can_network_connect", "true"]) except: self.print_msg(selinux_warning) def __create_http_keytab(self): installutils.kadmin_addprinc(self.principal) installutils.create_keytab("/etc/httpd/conf/ipa.keytab", self.principal) self.move_service(self.principal) self.add_cert_to_service() pent = pwd.getpwnam("apache") os.chown("/etc/httpd/conf/ipa.keytab", pent.pw_uid, pent.pw_gid) def remove_httpd_ccache(self): # Clean up existing ccache pent = pwd.getpwnam("apache") installutils.remove_file('/tmp/krb5cc_%d' % pent.pw_uid) def __configure_http(self): target_fname = '/etc/httpd/conf.d/ipa.conf' http_txt = ipautil.template_file(ipautil.SHARE_DIR + "ipa.conf", self.sub_dict) self.fstore.backup_file("/etc/httpd/conf.d/ipa.conf") http_fd = open(target_fname, "w") http_fd.write(http_txt) http_fd.close() os.chmod(target_fname, 0644) target_fname = '/etc/httpd/conf.d/ipa-rewrite.conf' http_txt = ipautil.template_file(ipautil.SHARE_DIR + "ipa-rewrite.conf", self.sub_dict) self.fstore.backup_file("/etc/httpd/conf.d/ipa-rewrite.conf") http_fd = open(target_fname, "w") http_fd.write(http_txt) http_fd.close() os.chmod(target_fname, 0644) def __disable_mod_ssl(self): if os.path.exists(SSL_CONF): self.fstore.backup_file(SSL_CONF) os.unlink(SSL_CONF) def __set_mod_nss_port(self): self.fstore.backup_file(NSS_CONF) if installutils.update_file(NSS_CONF, '8443', '443') != 0: print "Updating port in %s failed." % NSS_CONF def __set_mod_nss_nickname(self, nickname): installutils.set_directive(NSS_CONF, 'NSSNickname', nickname) def enable_mod_nss_renegotiate(self): installutils.set_directive(NSS_CONF, 'NSSRenegotiation', 'on', False) installutils.set_directive(NSS_CONF, 'NSSRequireSafeNegotiation', 'on', False) def __set_mod_nss_passwordfile(self): installutils.set_directive(NSS_CONF, 'NSSPassPhraseDialog', 'file:/etc/httpd/conf/password.conf') def __add_include(self): """This should run after __set_mod_nss_port so is already backed up""" if installutils.update_file(NSS_CONF, '', 'Include conf.d/ipa-rewrite.conf\n') != 0: print "Adding Include conf.d/ipa-rewrite to %s failed." % NSS_CONF def __setup_ssl(self): fqdn = None if not self.self_signed_ca: fqdn = self.fqdn ca_db = certs.CertDB(self.realm, host_name=fqdn, subject_base=self.subject_base) db = certs.CertDB(self.realm, subject_base=self.subject_base) if self.pkcs12_info: db.create_from_pkcs12(self.pkcs12_info[0], self.pkcs12_info[1], passwd=None) server_certs = db.find_server_certs() if len(server_certs) == 0: raise RuntimeError("Could not find a suitable server cert in import in %s" % self.pkcs12_info[0]) db.create_password_conf() # We only handle one server cert nickname = server_certs[0][0] self.dercert = db.get_cert_from_db(nickname, pem=False) db.track_server_cert(nickname, self.principal, db.passwd_fname) self.__set_mod_nss_nickname(nickname) else: if self.self_signed_ca: db.create_from_cacert(ca_db.cacert_fname) db.create_password_conf() self.dercert = db.create_server_cert("Server-Cert", self.fqdn, ca_db) db.track_server_cert("Server-Cert", self.principal, db.passwd_fname) db.create_signing_cert("Signing-Cert", "Object Signing Cert", ca_db) # Fix the database permissions os.chmod(certs.NSS_DIR + "/cert8.db", 0660) os.chmod(certs.NSS_DIR + "/key3.db", 0660) os.chmod(certs.NSS_DIR + "/secmod.db", 0660) os.chmod(certs.NSS_DIR + "/pwdfile.txt", 0660) pent = pwd.getpwnam("apache") os.chown(certs.NSS_DIR + "/cert8.db", 0, pent.pw_gid ) os.chown(certs.NSS_DIR + "/key3.db", 0, pent.pw_gid ) os.chown(certs.NSS_DIR + "/secmod.db", 0, pent.pw_gid ) os.chown(certs.NSS_DIR + "/pwdfile.txt", 0, pent.pw_gid ) # Fix SELinux permissions on the database ipaservices.restore_context(certs.NSS_DIR + "/cert8.db") ipaservices.restore_context(certs.NSS_DIR + "/key3.db") # In case this got generated as part of the install, reset the # context if ipautil.file_exists(certs.CA_SERIALNO): ipaservices.restore_context(certs.CA_SERIALNO) os.chown(certs.CA_SERIALNO, 0, pent.pw_gid) os.chmod(certs.CA_SERIALNO, 0664) def __setup_autoconfig(self): target_fname = '/usr/share/ipa/html/preferences.html' prefs_txt = ipautil.template_file(ipautil.SHARE_DIR + "preferences.html.template", self.sub_dict) prefs_fd = open(target_fname, "w") prefs_fd.write(prefs_txt) prefs_fd.close() os.chmod(target_fname, 0644) # The signing cert is generated in __setup_ssl db = certs.CertDB(self.realm, subject_base=self.subject_base) pwdfile = open(db.passwd_fname) pwd = pwdfile.read() pwdfile.close() tmpdir = tempfile.mkdtemp(prefix = "tmp-") target_fname = '/usr/share/ipa/html/configure.jar' shutil.copy("/usr/share/ipa/html/preferences.html", tmpdir) db.run_signtool(["-k", "Signing-Cert", "-Z", target_fname, "-e", ".html", "-p", pwd, tmpdir]) shutil.rmtree(tmpdir) os.chmod(target_fname, 0644) def __publish_ca_cert(self): ca_db = certs.CertDB(self.realm) ca_db.publish_ca_cert("/usr/share/ipa/html/ca.crt") def uninstall(self): if self.is_configured(): self.print_msg("Unconfiguring web server") running = self.restore_state("running") enabled = self.restore_state("enabled") if not running is None: self.stop() db = certs.CertDB(api.env.realm) db.untrack_server_cert("Server-Cert") if not enabled is None and not enabled: self.disable() for f in ["/etc/httpd/conf.d/ipa.conf", SSL_CONF, NSS_CONF]: try: self.fstore.restore_file(f) except ValueError, error: root_logger.debug(error) pass # Remove the configuration files we create installutils.remove_file("/etc/httpd/conf.d/ipa-rewrite.conf") installutils.remove_file("/etc/httpd/conf.d/ipa.conf") installutils.remove_file("/etc/httpd/conf.d/ipa-pki-proxy.conf") sebool_state = self.restore_state("httpd_can_network_connect") if not sebool_state is None: try: ipautil.run(["/usr/sbin/setsebool", "-P", "httpd_can_network_connect", sebool_state]) except: self.print_msg(selinux_warning) if not running is None and running: self.start()