Coverage for ipaserver/install/certs : 13%

# Authors: Karl MacMillan <kmacmillan@mentalrootkit.com> 

# 

# 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/>. 

# 

import os, stat, subprocess, re 

import sys 

import errno 

import tempfile 

import shutil 

from ipapython.ipa_log_manager import * 

import urllib 

import xml.dom.minidom 

import pwd 

import fcntl 

import base64 

from ipapython import nsslib 

from ipapython import dogtag 

from ipapython import sysrestore 

from ipapython import ipautil 

from ipapython import certmonger 

from ipapython.certdb import get_ca_nickname 

from ipalib import pkcs10 

from ConfigParser import RawConfigParser, MissingSectionHeaderError 

from ipapython import services as ipaservices 

from ipalib import x509 

from ipalib.dn import DN 

from ipalib.errors import CertificateOperationError 

from nss.error import NSPRError 

import nss.nss as nss 

from ipalib import api 

from ipapython.compat import sha1 

# Apache needs access to this database so we need to create it 

# where apache can reach 

NSS_DIR = "/etc/httpd/alias" 

CA_SERIALNO="/var/lib/ipa/ca_serialno" 

def ipa_self_signed(): 

    """ 

    Determine if the current IPA CA is self-signed or using another CA 

    We do this based on the CA plugin that is currently in use. 

    """ 

    if api.env.ra_plugin == 'selfsign': 

        return True 

    else: 

        return False 

def ipa_self_signed_master(): 

    """ 

    The selfsign backend is enabled only one a single master. 

    Return True/False whether this is that master. 

    Returns None if not a self-signed server. 

    """ 

    if ipa_self_signed(): 

        return api.env.enable_ra 

    else: 

        return None 

def find_cert_from_txt(cert, start=0): 

    """ 

    Given a cert blob (str) which may or may not contian leading and 

    trailing text, pull out just the certificate part. This will return 

    the FIRST cert in a stream of data. 

    Returns a tuple (certificate, last position in cert) 

    """ 

    s = cert.find('-----BEGIN CERTIFICATE-----', start) 

    e = cert.find('-----END CERTIFICATE-----', s) 

    if e > 0: e = e + 25 

    if s < 0 or e < 0: 

        raise RuntimeError("Unable to find certificate") 

    cert = cert[s:e] 

    return (cert, e) 

def get_cert_nickname(cert): 

    """ 

    Using the subject from cert come up with a nickname suitable 

    for NSS. The caller can decide whether to use just the RDN 

    or the whole subject. 

    Returns a tuple of (rdn, subject_dn) when rdn is the string 

    representation of the first RDN in the subject and subject_dn 

    is a DN object. 

    """ 

    nsscert = x509.load_certificate(cert) 

    subject = str(nsscert.subject) 

    dn = DN(subject) 

    return (str(dn[0]), dn) 

def next_serial(serial_file=CA_SERIALNO): 

    """ 

    Get the next serial number if we're using an NSS-based self-signed CA. 

    The file is an ini-like file with following properties: 

       lastvalue = the last serial number handed out 

       nextreplica = the serial number the next replica should start with 

       replicainterval = the number to add to nextreplica the next time a 

                         replica is created 

    File locking is attempted so we have unique serial numbers. 

    """ 

    fp = None 

    parser = RawConfigParser() 

    if ipautil.file_exists(serial_file): 

        try: 

            fp = open(serial_file, "r+") 

            fcntl.flock(fp.fileno(), fcntl.LOCK_EX) 

            parser.readfp(fp) 

            serial = parser.getint('selfsign', 'lastvalue') 

            cur_serial = serial + 1 

        except IOError, e: 

            raise RuntimeError("Unable to determine serial number: %s" % str(e)) 

        except MissingSectionHeaderError: 

            fcntl.flock(fp.fileno(), fcntl.LOCK_UN) 

            fp.close() 

            f=open(serial_file,"r") 

            r = f.readline() 

            f.close() 

            cur_serial = int(r) + 1 

            fp = open(serial_file, "w") 

            fcntl.flock(fp.fileno(), fcntl.LOCK_EX) 

            parser.add_section('selfsign') 

            parser.set('selfsign', 'nextreplica', 500000) 

            parser.set('selfsign', 'replicainterval', 500000) 

    else: 

        fp = open(serial_file, "w") 

        fcntl.flock(fp.fileno(), fcntl.LOCK_EX) 

        parser.add_section('selfsign') 

        parser.set('selfsign', 'nextreplica', 500000) 

        parser.set('selfsign', 'replicainterval', 500000) 

        cur_serial = 1000 

    try: 

        fp.seek(0) 

        parser.set('selfsign', 'lastvalue', cur_serial) 

        parser.write(fp) 

        fp.flush() 

        fcntl.flock(fp.fileno(), fcntl.LOCK_UN) 

        fp.close() 

    except IOError, e: 

        raise RuntimeError("Unable to increment serial number: %s" % str(e)) 

    return str(cur_serial) 

def next_replica(serial_file=CA_SERIALNO): 

    """ 

    Return the starting serial number for a new self-signed replica 

    """ 

    fp = None 

    parser = RawConfigParser() 

    if ipautil.file_exists(serial_file): 

        try: 

            fp = open(serial_file, "r+") 

            fcntl.flock(fp.fileno(), fcntl.LOCK_EX) 

            parser.readfp(fp) 

            serial = parser.getint('selfsign', 'nextreplica') 

            nextreplica = serial + parser.getint('selfsign', 'replicainterval') 

        except IOError, e: 

            raise RuntimeError("Unable to determine serial number: %s" % str(e)) 

    else: 

        raise RuntimeError("%s does not exist, cannot create replica" % serial_file) 

    try: 

        fp.seek(0) 

        parser.set('selfsign', 'nextreplica', nextreplica) 

        parser.write(fp) 

        fp.flush() 

        fcntl.flock(fp.fileno(), fcntl.LOCK_UN) 

        fp.close() 

    except IOError, e: 

        raise RuntimeError("Unable to increment serial number: %s" % str(e)) 

    return str(serial) 

class CertDB(object): 

    def __init__(self, realm, nssdir=NSS_DIR, fstore=None, host_name=None, subject_base=None): 

        self.secdir = nssdir 

        self.realm = realm 

        self.noise_fname = self.secdir + "/noise.txt" 

        self.passwd_fname = self.secdir + "/pwdfile.txt" 

        self.certdb_fname = self.secdir + "/cert8.db" 

        self.keydb_fname = self.secdir + "/key3.db" 

        self.secmod_fname = self.secdir + "/secmod.db" 

        self.cacert_fname = self.secdir + "/cacert.asc" 

        self.pk12_fname = self.secdir + "/cacert.p12" 

        self.pin_fname = self.secdir + "/pin.txt" 

        self.pwd_conf = "/etc/httpd/conf/password.conf" 

        self.reqdir = None 

        self.certreq_fname = None 

        self.certder_fname = None 

        self.host_name = host_name 

        self.subject_base = subject_base 

        try: 

            self.cwd = os.getcwd() 

        except OSError, e: 

            raise RuntimeError("Unable to determine the current directory: %s" % str(e)) 

        self.self_signed_ca = ipa_self_signed() 

        if not subject_base: 

            self.subject_base = "O=IPA" 

        self.subject_format = "CN=%%s,%s" % self.subject_base 

        self.cacert_name = get_ca_nickname(self.realm) 

        self.valid_months = "120" 

        self.keysize = "1024" 

        # We are going to set the owner of all of the cert 

        # files to the owner of the containing directory 

        # instead of that of the process. This works when 

        # this is called by root for a daemon that runs as 

        # a normal user 

        mode = os.stat(self.secdir) 

        self.uid = mode[stat.ST_UID] 

        self.gid = mode[stat.ST_GID] 

        if fstore: 

            self.fstore = fstore 

        else: 

            self.fstore = sysrestore.FileStore('/var/lib/ipa/sysrestore') 

    def __del__(self): 

        if self.reqdir is not None: 

            shutil.rmtree(self.reqdir, ignore_errors=True) 

        try: 

            os.chdir(self.cwd) 

        except: 

            pass 

    def setup_cert_request(self): 

        """ 

        Create a temporary directory to store certificate requests and 

        certificates. This should be called before requesting certificates. 

        This is set outside of __init__ to avoid creating a temporary 

        directory every time we open a cert DB. 

        """ 

        if self.reqdir is not None: 

            return 

        self.reqdir = tempfile.mkdtemp('', 'ipa-', '/var/lib/ipa') 

        self.certreq_fname = self.reqdir + "/tmpcertreq" 

        self.certder_fname = self.reqdir + "/tmpcert.der" 

        # When certutil makes a request it creates a file in the cwd, make 

        # sure we are in a unique place when this happens 

        os.chdir(self.reqdir) 

    def set_serial_from_pkcs12(self): 

        """A CA cert was loaded from a PKCS#12 file. Set up our serial file""" 

        cur_serial = self.find_cacert_serial() 

        try: 

            fp = open(CA_SERIALNO, "w") 

            parser = RawConfigParser() 

            parser.add_section('selfsign') 

            parser.set('selfsign', 'lastvalue', cur_serial) 

            parser.set('selfsign', 'nextreplica', 500000) 

            parser.set('selfsign', 'replicainterval', 500000) 

            parser.write(fp) 

            fp.close() 

        except IOError, e: 

            raise RuntimeError("Unable to increment serial number: %s" % str(e)) 

    def set_perms(self, fname, write=False, uid=None): 

        if uid: 

            pent = pwd.getpwnam(uid) 

            os.chown(fname, pent.pw_uid, pent.pw_gid) 

        else: 

            os.chown(fname, self.uid, self.gid) 

        perms = stat.S_IRUSR 

        if write: 

            perms |= stat.S_IWUSR 

        os.chmod(fname, perms) 

    def gen_password(self): 

        return sha1(ipautil.ipa_generate_password()).hexdigest() 

    def run_certutil(self, args, stdin=None): 

        new_args = ["/usr/bin/certutil", "-d", self.secdir] 

        new_args = new_args + args 

        return ipautil.run(new_args, stdin) 

    def run_signtool(self, args, stdin=None): 

        if not self.self_signed_ca: 

            f = open(self.passwd_fname, "r") 

            password = f.readline() 

            f.close() 

            new_args = ["/usr/bin/signtool", "-d", self.secdir, "-p", password] 

        else: 

            new_args = ["/usr/bin/signtool", "-d", self.secdir] 

        new_args = new_args + args 

        ipautil.run(new_args, stdin) 

    def create_noise_file(self): 

        if ipautil.file_exists(self.noise_fname): 

            os.remove(self.noise_fname) 

        f = open(self.noise_fname, "w") 

        f.write(self.gen_password()) 

        self.set_perms(self.noise_fname) 

    def create_passwd_file(self, passwd=None): 

        ipautil.backup_file(self.passwd_fname) 

        f = open(self.passwd_fname, "w") 

        if passwd is not None: 

            f.write("%s\n" % passwd) 

        else: 

            f.write(self.gen_password()) 

        f.close() 

        self.set_perms(self.passwd_fname) 

    def create_certdbs(self): 

        ipautil.backup_file(self.certdb_fname) 

        ipautil.backup_file(self.keydb_fname) 

        ipautil.backup_file(self.secmod_fname) 

        self.run_certutil(["-N", 

                           "-f", self.passwd_fname]) 

        self.set_perms(self.passwd_fname, write=True) 

    def list_certs(self): 

        """ 

        Return a tuple of tuples containing (nickname, trust) 

        """ 

        p = subprocess.Popen(["/usr/bin/certutil", "-d", self.secdir, 

                              "-L"], stdout=subprocess.PIPE) 

        certs = p.stdout.read() 

        certs = certs.split("\n") 

        # FIXME, this relies on NSS never changing the formatting of certutil 

        certlist = [] 

        for cert in certs: 

            nickname = cert[0:61] 

            trust = cert[61:] 

            if re.match(r'\w+,\w+,\w+', trust): 

                certlist.append((nickname.strip(), trust)) 

        return tuple(certlist) 

    def has_nickname(self, nickname): 

        """ 

        Returns True if nickname exists in the certdb, False otherwise. 

        This could also be done directly with: 

            certutil -L -d -n <nickname> ... 

        """ 

        certs = self.list_certs() 

        for cert in certs: 

            if nickname == cert[0]: 

                return True 

        return False 

    def create_ca_cert(self): 

        os.chdir(self.secdir) 

        subject = "cn=%s Certificate Authority" % self.realm 

        p = subprocess.Popen(["/usr/bin/certutil", 

                              "-d", self.secdir, 

                              "-S", "-n", self.cacert_name, 

                              "-s", subject, 

                              "-x", 

                              "-t", "CT,,C", 

                              "-1", 

                              "-2", 

                              "-5", 

                              "-m", next_serial(), 

                              "-v", self.valid_months, 

                              "-z", self.noise_fname, 

                              "-f", self.passwd_fname], 

                               stdin=subprocess.PIPE, 

                               stdout=subprocess.PIPE, 

                               stderr=subprocess.PIPE) 

        # Create key usage extension 

        # 0 - Digital Signature 

        # 1 - Non-repudiation 

        # 5 - Cert signing key 

        # Is this a critical extension [y/N]? y 

        p.stdin.write("0\n1\n5\n9\ny\n") 

        # Create basic constraint extension 

        # Is this a CA certificate [y/N]?  y 

        # Enter the path length constraint, enter to skip [<0 for unlimited pat 

        # Is this a critical extension [y/N]? y 

        # 5 6 7 9 n  -> SSL, S/MIME, Object signing CA 

        p.stdin.write("y\n\ny\n") 

        p.stdin.write("5\n6\n7\n9\nn\n") 

        p.wait() 

        os.chdir(self.cwd) 

    def export_ca_cert(self, nickname, create_pkcs12=False): 

        """create_pkcs12 tells us whether we should create a PKCS#12 file 

           of the CA or not. If we are running on a replica then we won't 

           have the private key to make a PKCS#12 file so we don't need to 

           do that step.""" 

        # export the CA cert for use with other apps 

        ipautil.backup_file(self.cacert_fname) 

        root_nicknames = self.find_root_cert(nickname) 

        fd = open(self.cacert_fname, "w") 

        for root in root_nicknames: 

            (cert, stderr, returncode) = self.run_certutil(["-L", "-n", root, "-a"]) 

            fd.write(cert) 

        fd.close() 

        os.chmod(self.cacert_fname, stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH) 

        if create_pkcs12: 

            ipautil.backup_file(self.pk12_fname) 

            ipautil.run(["/usr/bin/pk12util", "-d", self.secdir, 

                         "-o", self.pk12_fname, 

                         "-n", self.cacert_name, 

                         "-w", self.passwd_fname, 

                         "-k", self.passwd_fname]) 

            self.set_perms(self.pk12_fname) 

    def load_cacert(self, cacert_fname): 

        """ 

        Load all the certificates from a given file. It is assumed that 

        this file creates CA certificates. 

        """ 

        fd = open(cacert_fname) 

        certs = fd.read() 

        fd.close() 

        ca_dn = DN(('CN','Certificate Authority'), self.subject_base) 

        st = 0 

        while True: 

            try: 

                (cert, st) = find_cert_from_txt(certs, st) 

                (rdn, subject_dn) = get_cert_nickname(cert) 

                if subject_dn == ca_dn: 

                    nick = get_ca_nickname(self.realm) 

                else: 

                    nick = str(subject_dn) 

                self.run_certutil(["-A", "-n", nick, 

                                   "-t", "CT,,C", 

                                   "-a"], 

                                   stdin=cert) 

            except RuntimeError: 

                break 

    def get_cert_from_db(self, nickname, pem=True): 

        """ 

        Retrieve a certificate from the current NSS database for nickname. 

        pem controls whether the value returned PEM or DER-encoded. The 

        default is the data straight from certutil -a. 

        """ 

        try: 

            args = ["-L", "-n", nickname, "-a"] 

            (cert, err, returncode) = self.run_certutil(args) 

            if pem: 

                return cert 

            else: 

                (cert, start) = find_cert_from_txt(cert, start=0) 

                cert = x509.strip_header(cert) 

                dercert = base64.b64decode(cert) 

                return dercert 

        except ipautil.CalledProcessError: 

            return '' 

    def find_cacert_serial(self): 

        (out, err, returncode) = self.run_certutil(["-L", "-n", self.cacert_name]) 

        data = out.split('\n') 

        for line in data: 

            x = re.match(r'\s+Serial Number: (\d+) .*', line) 

            if x is not None: 

                return x.group(1) 

        raise RuntimeError("Unable to find serial number") 

    def track_server_cert(self, nickname, principal, password_file=None, command=None): 

        """ 

        Tell certmonger to track the given certificate nickname. 

        If command is not a full path then it is prefixed with 

        /usr/lib[64]/ipa/certmonger. 

        """ 

        if command is not None and not os.path.isabs(command): 

            if sys.maxsize > 2**32: 

                libpath = 'lib64' 

            else: 

                libpath = 'lib' 

            command = '/usr/%s/ipa/certmonger/%s' % (libpath, command) 

        cmonger = ipaservices.knownservices.certmonger 

        cmonger.enable() 

        ipaservices.knownservices.messagebus.start() 

        cmonger.start() 

        try: 

            (stdout, stderr, rc) = certmonger.start_tracking(nickname, self.secdir, password_file, command) 

        except (ipautil.CalledProcessError, RuntimeError), e: 

            root_logger.error("certmonger failed starting to track certificate: %s" % str(e)) 

            return 

        cmonger.stop() 

        cert = self.get_cert_from_db(nickname) 

        nsscert = x509.load_certificate(cert, dbdir=self.secdir) 

        subject = str(nsscert.subject) 

        m = re.match('New tracking request "(\d+)" added', stdout) 

        if not m: 

            root_logger.error('Didn\'t get new %s request, got %s' % (cmonger.service_name, stdout)) 

            raise RuntimeError('%s did not issue new tracking request for \'%s\' in \'%s\'. Use \'ipa-getcert list\' to list existing certificates.' % (cmonger.service_name, nickname, self.secdir)) 

        request_id = m.group(1) 

        certmonger.add_principal(request_id, principal) 

        certmonger.add_subject(request_id, subject) 

        cmonger.start() 

    def untrack_server_cert(self, nickname): 

        """ 

        Tell certmonger to stop tracking the given certificate nickname. 

        """ 

        # Always start certmonger. We can't untrack something if it isn't 

        # running 

        cmonger = ipaservices.knownservices.certmonger 

        ipaservices.knownservices.messagebus.start() 

        cmonger.start() 

        try: 

            certmonger.stop_tracking(self.secdir, nickname=nickname) 

        except (ipautil.CalledProcessError, RuntimeError), e: 

            root_logger.error("certmonger failed to stop tracking certificate: %s" % str(e)) 

        cmonger.stop() 

    def create_server_cert(self, nickname, hostname, other_certdb=None, subject=None): 

        """ 

        other_certdb can mean one of two things, depending on the context. 

        If we are using a self-signed CA then other_certdb contains the 

        CA that will be signing our CSR. 

        If we are using a dogtag CA then it contains the RA agent key 

        that will issue our cert. 

        You can override the certificate Subject by specifying a subject. 

        Returns a certificate in DER format. 

        """ 

        cdb = other_certdb 

        if not cdb: 

            cdb = self 

        if subject is None: 

            subject=self.subject_format % hostname 

        self.request_cert(subject) 

        cdb.issue_server_cert(self.certreq_fname, self.certder_fname) 

        self.add_cert(self.certder_fname, nickname) 

        fd = open(self.certder_fname, "r") 

        dercert = fd.read() 

        fd.close() 

        os.unlink(self.certreq_fname) 

        os.unlink(self.certder_fname) 

        return dercert 

    def create_signing_cert(self, nickname, hostname, other_certdb=None, subject=None): 

        cdb = other_certdb 

        if not cdb: 

            cdb = self 

        if subject is None: 

            subject=self.subject_format % hostname 

        self.request_cert(subject) 

        cdb.issue_signing_cert(self.certreq_fname, self.certder_fname) 

        self.add_cert(self.certder_fname, nickname) 

        os.unlink(self.certreq_fname) 

        os.unlink(self.certder_fname) 

    def request_cert(self, subject, certtype="rsa", keysize="2048"): 

        self.create_noise_file() 

        self.setup_cert_request() 

        args = ["-R", "-s", subject, 

                "-o", self.certreq_fname, 

                "-k", certtype, 

                "-g", keysize, 

                "-z", self.noise_fname, 

                "-f", self.passwd_fname] 

        if not self.self_signed_ca: 

            args.append("-a") 

        (stdout, stderr, returncode) = self.run_certutil(args) 

        os.remove(self.noise_fname) 

        return (stdout, stderr) 

    def issue_server_cert(self, certreq_fname, cert_fname): 

        self.setup_cert_request() 

        if self.self_signed_ca: 

            p = subprocess.Popen(["/usr/bin/certutil", 

                                  "-d", self.secdir, 

                                  "-C", "-c", self.cacert_name, 

                                  "-i", certreq_fname, 

                                  "-o", cert_fname, 

                                  "-m", next_serial(), 

                                  "-v", self.valid_months, 

                                  "-f", self.passwd_fname, 

                                  "-1", "-5"], 

                                 stdin=subprocess.PIPE, 

                                 stdout=subprocess.PIPE) 

            # Bah - this sucks, but I guess it isn't possible to fully 

            # control this with command line arguments. 

            # 

            # What this is requesting is: 

            #  -1 (Create key usage extension) 

            #     2 - Key encipherment 

            #     9 - done 

            #     n - not critical 

            # 

            #  -5 (Create netscape cert type extension) 

            #     1 - SSL Server 

            #     9 - done 

            #     n - not critical 

            p.stdin.write("2\n9\nn\n1\n9\nn\n") 

            p.wait() 

        else: 

            if self.host_name is None: 

                raise RuntimeError("CA Host is not set.") 

            f = open(certreq_fname, "r") 

            csr = f.readlines() 

            f.close() 

            csr = "".join(csr) 

            # We just want the CSR bits, make sure there is nothing else 

            csr = pkcs10.strip_header(csr) 

            params = {'profileId': 'caIPAserviceCert', 

                    'cert_request_type': 'pkcs10', 

                    'requestor_name': 'IPA Installer', 

                    'cert_request': csr, 

                    'xmlOutput': 'true'} 

            # Send the request to the CA 

            f = open(self.passwd_fname, "r") 

            password = f.readline() 

            f.close() 

            http_status, http_reason_phrase, http_headers, http_body = \ 

                dogtag.https_request(self.host_name, api.env.ca_ee_install_port, "/ca/ee/ca/profileSubmitSSLClient", self.secdir, password, "ipaCert", **params) 

            if http_status != 200: 

                raise CertificateOperationError(error='Unable to communicate with CMS (%s)' % \ 

                      http_reason_phrase) 

            # The result is an XML blob. Pull the certificate out of that 

            doc = xml.dom.minidom.parseString(http_body) 

            item_node = doc.getElementsByTagName("b64") 

            try: 

                try: 

                    cert = item_node[0].childNodes[0].data 

                except IndexError: 

                    raise RuntimeError("Certificate issuance failed") 

            finally: 

                doc.unlink() 

            # base64-decode the result for uniformity 

            cert = base64.b64decode(cert) 

            # Write the certificate to a file. It will be imported in a later 

            # step. This file will be read later to be imported. 

            f = open(cert_fname, "w") 

            f.write(cert) 

            f.close() 

        return 

    def issue_signing_cert(self, certreq_fname, cert_fname): 

        self.setup_cert_request() 

        if self.self_signed_ca: 

            p = subprocess.Popen(["/usr/bin/certutil", 

                                  "-d", self.secdir, 

                                  "-C", "-c", self.cacert_name, 

                                  "-i", certreq_fname, 

                                  "-o", cert_fname, 

                                  "-m", next_serial(), 

                                  "-v", self.valid_months, 

                                  "-f", self.passwd_fname, 

                                  "-1", "-5"], 

                                 stdin=subprocess.PIPE, 

                                 stdout=subprocess.PIPE) 

            # Bah - this sucks, but I guess it isn't possible to fully 

            # control this with command line arguments. 

            # 

            # What this is requesting is: 

            #  -1 (Create key usage extension) 

            #     0 - Digital Signature 

            #     5 - Cert signing key 

            #     9 - done 

            #     n - not critical 

            # 

            #  -5 (Create netscape cert type extension) 

            #     3 - Object Signing 

            #     9 - done 

            #     n - not critical 

            p.stdin.write("0\n5\n9\nn\n3\n9\nn\n") 

            p.wait() 

        else: 

            if self.host_name is None: 

                raise RuntimeError("CA Host is not set.") 

            f = open(certreq_fname, "r") 

            csr = f.readlines() 

            f.close() 

            csr = "".join(csr) 

            # We just want the CSR bits, make sure there is no thing else 

            csr = pkcs10.strip_header(csr) 

            params = {'profileId': 'caJarSigningCert', 

                    'cert_request_type': 'pkcs10', 

                    'requestor_name': 'IPA Installer', 

                    'cert_request': csr, 

                    'xmlOutput': 'true'} 

            # Send the request to the CA 

            f = open(self.passwd_fname, "r") 

            password = f.readline() 

            f.close() 

            http_status, http_reason_phrase, http_headers, http_body = \ 

                dogtag.https_request(self.host_name, api.env.ca_ee_install_port, "/ca/ee/ca/profileSubmitSSLClient", self.secdir, password, "ipaCert", **params) 

            if http_status != 200: 

                raise RuntimeError("Unable to submit cert request") 

            # The result is an XML blob. Pull the certificate out of that 

            doc = xml.dom.minidom.parseString(http_body) 

            item_node = doc.getElementsByTagName("b64") 

            cert = item_node[0].childNodes[0].data 

            doc.unlink() 

            # base64-decode the cert for uniformity 

            cert = base64.b64decode(cert) 

            # Write the certificate to a file. It will be imported in a later 

            # step. This file will be read later to be imported. 

            f = open(cert_fname, "w") 

            f.write(cert) 

            f.close() 

        return 

    def add_cert(self, cert_fname, nickname): 

        """ 

        Load a certificate from a PEM file and add minimal trust. 

        """ 

        args = ["-A", "-n", nickname, 

                "-t", "u,u,u", 

                "-i", cert_fname, 

                "-f", self.passwd_fname] 

        self.run_certutil(args) 

    def create_pin_file(self): 

        """ 

        This is the format of Directory Server pin files. 

        """ 

        ipautil.backup_file(self.pin_fname) 

        f = open(self.pin_fname, "w") 

        f.write("Internal (Software) Token:") 

        pwdfile = open(self.passwd_fname) 

        f.write(pwdfile.read()) 

        f.close() 

        pwdfile.close() 

        self.set_perms(self.pin_fname) 

    def create_password_conf(self): 

        """ 

        This is the format of mod_nss pin files. 

        """ 

        ipautil.backup_file(self.pwd_conf) 

        f = open(self.pwd_conf, "w") 

        f.write("internal:") 

        pwdfile = open(self.passwd_fname) 

        f.write(pwdfile.read()) 

        f.close() 

        pwdfile.close() 

        # TODO: replace explicit uid by a platform-specific one 

        self.set_perms(self.pwd_conf, uid="apache") 

    def find_root_cert(self, nickname): 

        """ 

        Given a nickname, return a list of the certificates that make up 

        the trust chain. 

        """ 

        root_nicknames = [] 

        p = subprocess.Popen(["/usr/bin/certutil", "-d", self.secdir, 

                              "-O", "-n", nickname], stdout=subprocess.PIPE) 

        chain = p.stdout.read() 

        chain = chain.split("\n") 

        for c in chain: 

            m = re.match('\s*"(.*)" \[.*', c) 

            if m: 

                root_nicknames.append(m.groups()[0]) 

        if len(root_nicknames) > 1: 

            # If you pass in the name of a CA to get the chain it may only 

            # return 1 (self-signed). Return that. 

            try: 

                root_nicknames.remove(nickname) 

            except ValueError: 

                # The nickname wasn't in the list 

                pass 

        # Try to work around a change in the F-11 certutil where untrusted 

        # CA's are not shown in the chain. This will make a default IPA 

        # server installable. 

        if len(root_nicknames) == 0 and self.self_signed_ca: 

            return [self.cacert_name] 

        return root_nicknames 

    def find_root_cert_from_pkcs12(self, pkcs12_fname, passwd_fname=None): 

        """Given a PKCS#12 file, try to find any certificates that do 

           not have a key. The assumption is that these are the root CAs. 

        """ 

        args = ["/usr/bin/pk12util", "-d", self.secdir, 

                "-l", pkcs12_fname, 

                "-k", passwd_fname] 

        if passwd_fname: 

            args = args + ["-w", passwd_fname] 

        try: 

            (stdout, stderr, returncode) = ipautil.run(args) 

        except ipautil.CalledProcessError, e: