1 # FIXME: more intelligent fault raises
6 Copyright 2007, Red Hat, Inc
9 This software may be freely redistributed under the terms of the GNU
10 general public license.
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software
14 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 import SimpleXMLRPCServer
22 from OpenSSL
import crypto
34 from config
import read_config
35 from commonconfig
import CMConfig
37 CERTMASTER_LISTEN_PORT
= 51235
38 CERTMASTER_CONFIG
= "/etc/certmaster/certmaster.conf"
40 class CertMaster(object):
41 def __init__(self
, conf_file
=CERTMASTER_CONFIG
):
42 self
.cfg
= read_config(conf_file
, CMConfig
)
44 usename
= utils
.get_hostname(talk_to_certmaster
=False)
46 mycn
= '%s-CA-KEY' % usename
47 self
.ca_key_file
= '%s/certmaster.key' % self
.cfg
.cadir
48 self
.ca_cert_file
= '%s/certmaster.crt' % self
.cfg
.cadir
50 self
.logger
= logger
.Logger().logger
51 self
.audit_logger
= logger
.AuditLogger()
54 if not os
.path
.exists(self
.cfg
.cadir
):
55 os
.makedirs(self
.cfg
.cadir
)
56 if not os
.path
.exists(self
.ca_key_file
) and not os
.path
.exists(self
.ca_cert_file
):
57 certs
.create_ca(CN
=mycn
, ca_key_file
=self
.ca_key_file
, ca_cert_file
=self
.ca_cert_file
)
58 except (IOError, OSError), e
:
59 print 'Cannot make certmaster certificate authority keys/certs, aborting: %s' % e
63 # open up the cakey and cacert so we have them available
64 self
.cakey
= certs
.retrieve_key_from_file(self
.ca_key_file
)
65 self
.cacert
= certs
.retrieve_cert_from_file(self
.ca_cert_file
)
67 for dirpath
in [self
.cfg
.cadir
, self
.cfg
.certroot
, self
.cfg
.csrroot
]:
68 if not os
.path
.exists(dirpath
):
73 'wait_for_cert': self
.wait_for_cert
,
77 def _dispatch(self
, method
, params
):
78 if method
== 'trait_names' or method
== '_getAttributeNames':
79 return self
.handlers
.keys()
82 if method
in self
.handlers
.keys():
83 return self
.handlers
[method
](*params
)
85 self
.logger
.info("Unhandled method call for method: %s " % method
)
86 raise codes
.InvalidMethodException
88 def _sanitize_cn(self
, commonname
):
89 commonname
= commonname
.replace('/', '')
90 commonname
= commonname
.replace('\\', '')
93 def wait_for_cert(self
, csrbuf
):
96 returns True, caller_cert, ca_cert
101 csrreq
= crypto
.load_certificate_request(crypto
.FILETYPE_PEM
, csrbuf
)
102 except crypto
.Error
, e
:
103 #XXX need to raise a fault here and document it - but false is just as good
106 requesting_host
= self
._sanitize
_cn
(csrreq
.get_subject().CN
)
109 self
.logger
.info("%s requested signing of cert %s" % (requesting_host
,csrreq
.get_subject().CN
))
110 # get rid of dodgy characters in the filename we're about to make
112 certfile
= '%s/%s.cert' % (self
.cfg
.certroot
, requesting_host
)
113 csrfile
= '%s/%s.csr' % (self
.cfg
.csrroot
, requesting_host
)
115 # check for old csr on disk
116 # if we have it - compare the two - if they are not the same - raise a fault
117 self
.logger
.debug("csrfile: %s certfile: %s" % (csrfile
, certfile
))
118 if os
.path
.exists(csrfile
):
119 oldfo
= open(csrfile
)
120 oldcsrbuf
= oldfo
.read()
122 oldsha
.update(oldcsrbuf
)
123 olddig
= oldsha
.hexdigest()
125 newsha
.update(csrbuf
)
126 newdig
= newsha
.hexdigest()
127 if not newdig
== olddig
:
128 self
.logger
.info("A cert for %s already exists and does not match the requesting cert" % (requesting_host
))
129 # XXX raise a proper fault
134 # if we have it, then return True, etc, etc
135 if os
.path
.exists(certfile
):
136 slavecert
= certs
.retrieve_cert_from_file(certfile
)
137 cert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, slavecert
)
138 cacert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, self
.cacert
)
139 return True, cert_buf
, cacert_buf
141 # if we don't have a cert then:
142 # if we're autosign then sign it, write out the cert and return True, etc, etc
143 # else write out the csr
145 if self
.cfg
.autosign
:
146 cert_fn
= self
.sign_this_csr(csrreq
)
147 cert
= certs
.retrieve_cert_from_file(cert_fn
)
148 cert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, cert
)
149 cacert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, self
.cacert
)
150 self
.logger
.info("cert for %s was autosigned" % (requesting_host
))
151 return True, cert_buf
, cacert_buf
154 # write the csr out to a file to be dealt with by the admin
155 destfo
= open(csrfile
, 'w')
156 destfo
.write(crypto
.dump_certificate_request(crypto
.FILETYPE_PEM
, csrreq
))
159 self
.logger
.info("cert for %s created and ready to be signed" % (requesting_host
))
164 def get_csrs_waiting(self
):
166 csrglob
= '%s/*.csr' % self
.cfg
.csrroot
167 csr_list
= glob
.glob(csrglob
)
169 hn
= os
.path
.basename(f
)
174 def remove_this_cert(self
, hn
):
175 """ removes cert for hostname using unlink """
177 csrglob
= '%s/%s.csr' % (cm
.cfg
.csrroot
, hn
)
178 csrs
= glob
.glob(csrglob
)
179 certglob
= '%s/%s.cert' % (cm
.cfg
.certroot
, hn
)
180 certs
= glob
.glob(certglob
)
181 if not csrs
and not certs
:
182 # FIXME: should be an exception?
183 print 'No match for %s to clean up' % hn
185 for fn
in csrs
+ certs
:
186 print 'Cleaning out %s for host matching %s' % (fn
, hn
)
187 self
.logger
.info('Cleaning out %s for host matching %s' % (fn
, hn
))
190 def sign_this_csr(self
, csr
):
191 """returns the path to the signed cert file"""
192 csr_unlink_file
= None
194 if type(csr
) is type(''):
195 if csr
.startswith('/') and os
.path
.exists(csr
): # we have a full path to the file
197 csr_buf
= csrfo
.read()
198 csr_unlink_file
= csr
200 elif os
.path
.exists('%s/%s' % (self
.cfg
.csrroot
, csr
)): # we have a partial path?
201 csrfo
= open('%s/%s' % (self
.cfg
.csrroot
, csr
))
202 csr_buf
= csrfo
.read()
203 csr_unlink_file
= '%s/%s' % (self
.cfg
.csrroot
, csr
)
205 # we have a string of some kind
210 csrreq
= crypto
.load_certificate_request(crypto
.FILETYPE_PEM
, csr_buf
)
211 except crypto
.Error
, e
:
212 self
.logger
.info("Unable to sign %s: Bad CSR" % (csr
))
213 raise exceptions
.Exception("Bad CSR: %s" % csr
)
215 else: # assume we got a bare csr req
217 requesting_host
= self
._sanitize
_cn
(csrreq
.get_subject().CN
)
219 certfile
= '%s/%s.cert' % (self
.cfg
.certroot
, requesting_host
)
220 thiscert
= certs
.create_slave_certificate(csrreq
, self
.cakey
, self
.cacert
, self
.cfg
.cadir
)
221 destfo
= open(certfile
, 'w')
222 destfo
.write(crypto
.dump_certificate(crypto
.FILETYPE_PEM
, thiscert
))
225 if csr_unlink_file
and os
.path
.exists(csr_unlink_file
):
226 os
.unlink(csr_unlink_file
)
233 class CertmasterXMLRPCServer(SimpleXMLRPCServer
.SimpleXMLRPCServer
):
234 def __init__(self
, addr
):
235 self
.allow_reuse_address
= True
236 SimpleXMLRPCServer
.SimpleXMLRPCServer
.__init
__(self
, addr
)
239 def serve(xmlrpcinstance
):
242 Code for starting the XMLRPC service.
246 server
= CertmasterXMLRPCServer((xmlrpcinstance
.cfg
.listen_addr
, CERTMASTER_LISTEN_PORT
))
247 server
.logRequests
= 0 # don't print stuff to console
248 server
.register_instance(xmlrpcinstance
)
249 xmlrpcinstance
.logger
.info("certmaster started")
250 xmlrpcinstance
.audit_logger
.logger
.info("certmaster started")
251 server
.serve_forever()
256 cm
= CertMaster('/etc/certmaster/certmaster.conf')
258 if "daemon" in argv
or "--daemon" in argv
:
259 utils
.daemonize("/var/run/certmaster.pid")
264 # just let exceptions bubble up for now
268 if __name__
== "__main__":
269 #textdomain(I18N_DOMAIN)