mirror of
https://salsa.debian.org/freeipa-team/freeipa.git
synced 2026-07-30 08:07:56 -05:00
Rob Crittenden
49b36583a5
External CA signing is a 2-step process. You first have to run the IPA installer which will generate a CSR. You pass this CSR to your external CA and get back a cert. You then pass this cert and the CA cert and re-run the installer. The CSR is always written to /root/ipa.csr. A run would look like: # ipa-server-install --ca --external-ca -p password -a password -r EXAMPLE.COM -u dirsrv -n example.com --hostname=ipa.example.com -U [ sign cert request ] # ipa-server-install --ca --external-ca -p password -a password --external_cert_file=/tmp/rob.crt --external_ca_file=/tmp/cacert.crt -U -p password -a password -r EXAMPLE.COM -u dirsrv -n example.com --hostname=ipa.example.com This also abstracts out the RA backend plugin so the self-signed CA we create can be used in a running server. This means that the cert plugin can request certs (and nothing else). This should let us do online replica creation. To handle the self-signed CA the simple ca_serialno file now contains additional data so we don't have overlapping serial numbers in replicas. This isn't used yet. Currently the cert plugin will not work on self-signed replicas. One very important change for self-signed CAs is that the CA is no longer held in the DS database. It is now in the Apache database. Lots of general fixes were also made in ipaserver.install.certs including: - better handling when multiple CA certificates are in a single file - A temporary directory for request certs is not always created when the class is instantiated (you have to call setup_cert_request())
261 lines
10 KiB
Python
261 lines
10 KiB
Python
# Authors: Rob Crittenden <rcritten@redhat.com>
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#
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# Copyright (C) 2007 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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import os
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import os.path
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import tempfile
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import logging
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import pwd
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import shutil
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import service
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import certs
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import dsinstance
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import installutils
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from ipapython import sysrestore
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from ipapython import ipautil
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HTTPD_DIR = "/etc/httpd"
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SSL_CONF = HTTPD_DIR + "/conf.d/ssl.conf"
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NSS_CONF = HTTPD_DIR + "/conf.d/nss.conf"
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NSS_DIR = HTTPD_DIR + "/alias"
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selinux_warning = """WARNING: could not set selinux boolean httpd_can_network_connect to true.
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The web interface may not function correctly until this boolean is
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successfully change with the command:
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/usr/sbin/setsebool -P httpd_can_network_connect true
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Try updating the policycoreutils and selinux-policy packages.
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"""
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class WebGuiInstance(service.SimpleServiceInstance):
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def __init__(self):
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service.SimpleServiceInstance.__init__(self, "ipa_webgui")
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class HTTPInstance(service.Service):
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def __init__(self, fstore = None):
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service.Service.__init__(self, "httpd")
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if fstore:
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self.fstore = fstore
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else:
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self.fstore = sysrestore.FileStore('/var/lib/ipa/sysrestore')
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def create_instance(self, realm, fqdn, domain_name, autoconfig=True, pkcs12_info=None, self_signed_ca=False):
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self.fqdn = fqdn
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self.realm = realm
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self.domain = domain_name
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self.pkcs12_info = pkcs12_info
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self.self_signed_ca = self_signed_ca
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self.sub_dict = { "REALM" : realm, "FQDN": fqdn, "DOMAIN" : self.domain }
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self.step("disabling mod_ssl in httpd", self.__disable_mod_ssl)
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self.step("Setting mod_nss port to 443", self.__set_mod_nss_port)
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self.step("Setting mod_nss password file", self.__set_mod_nss_passwordfile)
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self.step("Adding URL rewriting rules", self.__add_include)
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self.step("configuring httpd", self.__configure_http)
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self.step("creating a keytab for httpd", self.__create_http_keytab)
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self.step("Setting up ssl", self.__setup_ssl)
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if autoconfig:
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self.step("Setting up browser autoconfig", self.__setup_autoconfig)
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self.step("publish CA cert", self.__publish_ca_cert)
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self.step("configuring SELinux for httpd", self.__selinux_config)
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self.step("restarting httpd", self.__start)
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self.step("configuring httpd to start on boot", self.__enable)
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self.start_creation("Configuring the web interface")
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def __start(self):
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self.backup_state("running", self.is_running())
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self.restart()
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def __enable(self):
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self.backup_state("enabled", self.is_running())
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self.chkconfig_on()
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def __selinux_config(self):
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selinux=0
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try:
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if (os.path.exists('/usr/sbin/selinuxenabled')):
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ipautil.run(["/usr/sbin/selinuxenabled"])
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selinux=1
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except ipautil.CalledProcessError:
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# selinuxenabled returns 1 if not enabled
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pass
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if selinux:
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try:
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# returns e.g. "httpd_can_network_connect --> off"
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(stdout, stderr) = ipautil.run(["/usr/sbin/getsebool",
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"httpd_can_network_connect"])
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self.backup_state("httpd_can_network_connect", stdout.split()[2])
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except:
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pass
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# Allow apache to connect to the turbogears web gui
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# This can still fail even if selinux is enabled
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try:
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ipautil.run(["/usr/sbin/setsebool", "-P", "httpd_can_network_connect", "true"])
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except:
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self.print_msg(selinux_warning)
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def __create_http_keytab(self):
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http_principal = "HTTP/" + self.fqdn + "@" + self.realm
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installutils.kadmin_addprinc(http_principal)
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installutils.create_keytab("/etc/httpd/conf/ipa.keytab", http_principal)
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pent = pwd.getpwnam("apache")
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os.chown("/etc/httpd/conf/ipa.keytab", pent.pw_uid, pent.pw_gid)
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def __configure_http(self):
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http_txt = ipautil.template_file(ipautil.SHARE_DIR + "ipa.conf", self.sub_dict)
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self.fstore.backup_file("/etc/httpd/conf.d/ipa.conf")
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http_fd = open("/etc/httpd/conf.d/ipa.conf", "w")
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http_fd.write(http_txt)
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http_fd.close()
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http_txt = ipautil.template_file(ipautil.SHARE_DIR + "ipa-rewrite.conf", self.sub_dict)
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self.fstore.backup_file("/etc/httpd/conf.d/ipa-rewrite.conf")
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http_fd = open("/etc/httpd/conf.d/ipa-rewrite.conf", "w")
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http_fd.write(http_txt)
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http_fd.close()
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def __disable_mod_ssl(self):
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if os.path.exists(SSL_CONF):
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self.fstore.backup_file(SSL_CONF)
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os.unlink(SSL_CONF)
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def __set_mod_nss_port(self):
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self.fstore.backup_file(NSS_CONF)
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if installutils.update_file(NSS_CONF, '8443', '443') != 0:
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print "Updating port in %s failed." % NSS_CONF
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def __set_mod_nss_nickname(self, nickname):
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installutils.set_directive(NSS_CONF, 'NSSNickname', nickname)
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def __set_mod_nss_passwordfile(self):
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installutils.set_directive(NSS_CONF, 'NSSPassPhraseDialog', 'file:/etc/httpd/conf/password.conf')
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def __add_include(self):
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"""This should run after __set_mod_nss_port so is already backed up"""
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if installutils.update_file(NSS_CONF, '</VirtualHost>', 'Include conf.d/ipa-rewrite.conf\n</VirtualHost>') != 0:
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print "Adding Include conf.d/ipa-rewrite to %s failed." % NSS_CONF
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def __setup_ssl(self):
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if self.self_signed_ca:
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ca_db = certs.CertDB(NSS_DIR)
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else:
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ca_db = certs.CertDB(NSS_DIR, host_name=self.fqdn)
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db = certs.CertDB(NSS_DIR)
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if self.pkcs12_info:
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db.create_from_pkcs12(self.pkcs12_info[0], self.pkcs12_info[1], passwd="")
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server_certs = db.find_server_certs()
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if len(server_certs) == 0:
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raise RuntimeError("Could not find a suitable server cert in import in %s" % self.pkcs12_info[0])
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db.create_password_conf()
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# We only handle one server cert
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nickname = server_certs[0][0]
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self.__set_mod_nss_nickname(nickname)
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else:
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if self.self_signed_ca:
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db.create_from_cacert(ca_db.cacert_fname)
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db.create_password_conf()
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db.create_server_cert("Server-Cert", self.fqdn, ca_db)
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db.create_signing_cert("Signing-Cert", "Object Signing Cert", ca_db)
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else:
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db.create_server_cert("Server-Cert", self.fqdn, ca_db)
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db.create_signing_cert("Signing-Cert", "Object Signing Cert", ca_db)
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db.create_password_conf()
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# Fix the database permissions
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os.chmod(NSS_DIR + "/cert8.db", 0660)
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os.chmod(NSS_DIR + "/key3.db", 0660)
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os.chmod(NSS_DIR + "/secmod.db", 0660)
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os.chmod(NSS_DIR + "/pwdfile.txt", 0660)
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pent = pwd.getpwnam("apache")
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os.chown(NSS_DIR + "/cert8.db", 0, pent.pw_gid )
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os.chown(NSS_DIR + "/key3.db", 0, pent.pw_gid )
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os.chown(NSS_DIR + "/secmod.db", 0, pent.pw_gid )
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os.chown(NSS_DIR + "/pwdfile.txt", 0, pent.pw_gid )
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# Fix SELinux permissions on the database
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ipautil.run(["/sbin/restorecon", NSS_DIR + "/cert8.db"])
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ipautil.run(["/sbin/restorecon", NSS_DIR + "/key3.db"])
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# In case this got generated as part of the install, reset the
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# context
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if ipautil.file_exists(certs.CA_SERIALNO):
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ipautil.run(["/sbin/restorecon", certs.CA_SERIALNO])
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os.chown(certs.CA_SERIALNO, 0, pent.pw_gid)
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os.chmod(certs.CA_SERIALNO, 0664)
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def __setup_autoconfig(self):
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prefs_txt = ipautil.template_file(ipautil.SHARE_DIR + "preferences.html.template", self.sub_dict)
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prefs_fd = open("/usr/share/ipa/html/preferences.html", "w")
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prefs_fd.write(prefs_txt)
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prefs_fd.close()
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# The signing cert is generated in __setup_ssl
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db = certs.CertDB(NSS_DIR)
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pwdfile = open(db.passwd_fname)
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pwd = pwdfile.read()
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pwdfile.close()
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tmpdir = tempfile.mkdtemp(prefix = "tmp-")
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shutil.copy("/usr/share/ipa/html/preferences.html", tmpdir)
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db.run_signtool(["-k", "Signing-Cert",
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"-Z", "/usr/share/ipa/html/configure.jar",
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"-e", ".html", "-p", pwd,
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tmpdir])
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shutil.rmtree(tmpdir)
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def __publish_ca_cert(self):
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ca_db = certs.CertDB(NSS_DIR)
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shutil.copy(ca_db.cacert_fname, "/usr/share/ipa/html/ca.crt")
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os.chmod("/usr/share/ipa/html/ca.crt", 0444)
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def uninstall(self):
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running = self.restore_state("running")
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enabled = self.restore_state("enabled")
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if not running is None:
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self.stop()
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if not enabled is None and not enabled:
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self.chkconfig_off()
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for f in ["/etc/httpd/conf.d/ipa.conf", SSL_CONF, NSS_CONF]:
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try:
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self.fstore.restore_file(f)
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except ValueError, error:
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logging.debug(error)
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pass
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sebool_state = self.restore_state("httpd_can_network_connect")
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if not sebool_state is None:
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try:
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ipautil.run(["/usr/sbin/setsebool", "-P", "httpd_can_network_connect", sebool_state])
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except:
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self.print_msg(selinux_warning)
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if not running is None and running:
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self.start()
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