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
24 from OpenSSL
import crypto
29 # Python-2.4.z ... gah! (or even 2.3!)
36 raise ValueError, "Bad checksum type"
48 from config
import read_config
49 from commonconfig
import CMConfig
51 CERTMASTER_LISTEN_PORT
= 51235
52 CERTMASTER_CONFIG
= "/etc/certmaster/certmaster.conf"
54 class CertMaster(object):
55 def __init__(self
, conf_file
=CERTMASTER_CONFIG
):
56 self
.cfg
= read_config(conf_file
, CMConfig
)
58 usename
= utils
.get_hostname(talk_to_certmaster
=False)
60 mycn
= '%s-CA-KEY' % usename
61 self
.ca_key_file
= '%s/certmaster.key' % self
.cfg
.cadir
62 self
.ca_cert_file
= '%s/certmaster.crt' % self
.cfg
.cadir
64 self
.logger
= logger
.Logger().logger
65 self
.audit_logger
= logger
.AuditLogger()
68 if not os
.path
.exists(self
.cfg
.cadir
):
69 os
.makedirs(self
.cfg
.cadir
)
70 if not os
.path
.exists(self
.ca_key_file
) and not os
.path
.exists(self
.ca_cert_file
):
71 certs
.create_ca(CN
=mycn
, ca_key_file
=self
.ca_key_file
, ca_cert_file
=self
.ca_cert_file
)
72 except (IOError, OSError), e
:
73 print 'Cannot make certmaster certificate authority keys/certs, aborting: %s' % e
77 # open up the cakey and cacert so we have them available
78 self
.cakey
= certs
.retrieve_key_from_file(self
.ca_key_file
)
79 self
.cacert
= certs
.retrieve_cert_from_file(self
.ca_cert_file
)
81 for dirpath
in [self
.cfg
.cadir
, self
.cfg
.certroot
, self
.cfg
.csrroot
]:
82 if not os
.path
.exists(dirpath
):
87 'wait_for_cert': self
.wait_for_cert
,
91 def _dispatch(self
, method
, params
):
92 if method
== 'trait_names' or method
== '_getAttributeNames':
93 return self
.handlers
.keys()
96 if method
in self
.handlers
.keys():
97 return self
.handlers
[method
](*params
)
99 self
.logger
.info("Unhandled method call for method: %s " % method
)
100 raise codes
.InvalidMethodException
102 def _sanitize_cn(self
, commonname
):
103 commonname
= commonname
.replace('/', '')
104 commonname
= commonname
.replace('\\', '')
107 def wait_for_cert(self
, csrbuf
, with_triggers
=True):
109 takes csr as a string
110 returns True, caller_cert, ca_cert
111 returns False, '', ''
115 csrreq
= crypto
.load_certificate_request(crypto
.FILETYPE_PEM
, csrbuf
)
116 except crypto
.Error
, e
:
117 #XXX need to raise a fault here and document it - but false is just as good
120 requesting_host
= self
._sanitize
_cn
(csrreq
.get_subject().CN
)
123 self
._run
_triggers
(requesting_host
, '/var/lib/certmaster/triggers/request/pre/*')
125 self
.logger
.info("%s requested signing of cert %s" % (requesting_host
,csrreq
.get_subject().CN
))
126 # get rid of dodgy characters in the filename we're about to make
128 certfile
= '%s/%s.cert' % (self
.cfg
.certroot
, requesting_host
)
129 csrfile
= '%s/%s.csr' % (self
.cfg
.csrroot
, requesting_host
)
131 # check for old csr on disk
132 # if we have it - compare the two - if they are not the same - raise a fault
133 self
.logger
.debug("csrfile: %s certfile: %s" % (csrfile
, certfile
))
135 if os
.path
.exists(csrfile
):
136 oldfo
= open(csrfile
)
137 oldcsrbuf
= oldfo
.read()
138 oldsha
= hashlib
.new('sha1')
139 oldsha
.update(oldcsrbuf
)
140 olddig
= oldsha
.hexdigest()
141 newsha
= hashlib
.new('sha1')
142 newsha
.update(csrbuf
)
143 newdig
= newsha
.hexdigest()
144 if not newdig
== olddig
:
145 self
.logger
.info("A cert for %s already exists and does not match the requesting cert" % (requesting_host
))
146 # XXX raise a proper fault
151 # if we have it, then return True, etc, etc
152 if os
.path
.exists(certfile
):
153 slavecert
= certs
.retrieve_cert_from_file(certfile
)
154 cert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, slavecert
)
155 cacert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, self
.cacert
)
157 self
._run
_triggers
(requesting_host
,'/var/lib/certmaster/triggers/request/post/*')
158 return True, cert_buf
, cacert_buf
160 # if we don't have a cert then:
161 # if we're autosign then sign it, write out the cert and return True, etc, etc
162 # else write out the csr
164 if self
.cfg
.autosign
:
165 cert_fn
= self
.sign_this_csr(csrreq
)
166 cert
= certs
.retrieve_cert_from_file(cert_fn
)
167 cert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, cert
)
168 cacert_buf
= crypto
.dump_certificate(crypto
.FILETYPE_PEM
, self
.cacert
)
169 self
.logger
.info("cert for %s was autosigned" % (requesting_host
))
171 self
._run
_triggers
(None,'/var/lib/certmaster/triggers/request/post/*')
172 return True, cert_buf
, cacert_buf
175 # write the csr out to a file to be dealt with by the admin
176 destfo
= open(csrfile
, 'w')
177 destfo
.write(crypto
.dump_certificate_request(crypto
.FILETYPE_PEM
, csrreq
))
180 self
.logger
.info("cert for %s created and ready to be signed" % (requesting_host
))
182 self
._run
_triggers
(None,'/var/lib/certmaster/triggers/request/post/*')
187 def get_csrs_waiting(self
):
189 csrglob
= '%s/*.csr' % self
.cfg
.csrroot
190 csr_list
= glob
.glob(csrglob
)
192 hn
= os
.path
.basename(f
)
197 def remove_this_cert(self
, hn
, with_triggers
=True):
198 """ removes cert for hostname using unlink """
200 csrglob
= '%s/%s.csr' % (cm
.cfg
.csrroot
, hn
)
201 csrs
= glob
.glob(csrglob
)
202 certglob
= '%s/%s.cert' % (cm
.cfg
.certroot
, hn
)
203 certs
= glob
.glob(certglob
)
204 if not csrs
and not certs
:
205 # FIXME: should be an exception?
206 print 'No match for %s to clean up' % hn
209 self
._run
_triggers
(hn
,'/var/lib/certmaster/triggers/remove/pre/*')
210 for fn
in csrs
+ certs
:
211 print 'Cleaning out %s for host matching %s' % (fn
, hn
)
212 self
.logger
.info('Cleaning out %s for host matching %s' % (fn
, hn
))
215 self
._run
_triggers
(hn
,'/var/lib/certmaster/triggers/remove/post/*')
217 def sign_this_csr(self
, csr
, with_triggers
=True):
218 """returns the path to the signed cert file"""
219 csr_unlink_file
= None
221 if type(csr
) is type(''):
222 if csr
.startswith('/') and os
.path
.exists(csr
): # we have a full path to the file
224 csr_buf
= csrfo
.read()
225 csr_unlink_file
= csr
227 elif os
.path
.exists('%s/%s' % (self
.cfg
.csrroot
, csr
)): # we have a partial path?
228 csrfo
= open('%s/%s' % (self
.cfg
.csrroot
, csr
))
229 csr_buf
= csrfo
.read()
230 csr_unlink_file
= '%s/%s' % (self
.cfg
.csrroot
, csr
)
232 # we have a string of some kind
237 csrreq
= crypto
.load_certificate_request(crypto
.FILETYPE_PEM
, csr_buf
)
238 except crypto
.Error
, e
:
239 self
.logger
.info("Unable to sign %s: Bad CSR" % (csr
))
240 raise exceptions
.Exception("Bad CSR: %s" % csr
)
242 else: # assume we got a bare csr req
246 requesting_host
= self
._sanitize
_cn
(csrreq
.get_subject().CN
)
248 self
._run
_triggers
(requesting_host
,'/var/lib/certmaster/triggers/sign/pre/*')
251 certfile
= '%s/%s.cert' % (self
.cfg
.certroot
, requesting_host
)
252 self
.logger
.info("Signing for csr %s requested" % certfile
)
253 thiscert
= certs
.create_slave_certificate(csrreq
, self
.cakey
, self
.cacert
, self
.cfg
.cadir
)
255 destfo
= open(certfile
, 'w')
256 destfo
.write(crypto
.dump_certificate(crypto
.FILETYPE_PEM
, thiscert
))
261 self
.logger
.info("csr %s signed" % (certfile
))
263 self
._run
_triggers
(requesting_host
,'/var/lib/certmaster/triggers/sign/post/*')
266 if csr_unlink_file
and os
.path
.exists(csr_unlink_file
):
267 os
.unlink(csr_unlink_file
)
271 # return a list of already signed certs
272 def get_signed_certs(self
, hostglobs
=None):
273 certglob
= "%s/*.cert" % (self
.cfg
.certroot
)
280 for hostglob
in globs
:
281 certglob
= "%s/%s.cert" % (self
.cfg
.certroot
, hostglob
)
282 certs
= certs
+ glob
.glob(certglob
)
286 # just want the hostname, so strip off path and ext
287 signed_certs
.append(os
.path
.basename(cert
).split(".cert", 1)[0])
291 def get_peer_certs(self
):
293 Returns a list of all certs under peerroot
295 myglob
= os
.path
.join(self
.cfg
.peerroot
, '*.%s' % self
.cfg
.cert_extension
)
296 return glob
.glob(myglob
)
298 # return a list of the cert hash string we use to identify systems
299 def get_cert_hashes(self
, hostglobs
=None):
300 certglob
= "%s/*.cert" % (self
.cfg
.certroot
)
307 for hostglob
in globs
:
308 certglob
= "%s/%s.cert" % (self
.cfg
.certroot
, hostglob
)
309 certfiles
= certfiles
+ glob
.glob(certglob
)
312 for certfile
in certfiles
:
313 cert
= certs
.retrieve_cert_from_file(certfile
)
314 cert_hashes
.append("%s-%s" % (cert
.get_subject().CN
, cert
.subject_name_hash()))
318 def _run_triggers(self
, ref
, globber
):
319 return utils
.run_triggers(ref
, globber
)
322 class CertmasterXMLRPCServer(SimpleXMLRPCServer
.SimpleXMLRPCServer
):
323 def __init__(self
, addr
):
324 self
.allow_reuse_address
= True
325 SimpleXMLRPCServer
.SimpleXMLRPCServer
.__init
__(self
, addr
)
328 def serve(xmlrpcinstance
):
331 Code for starting the XMLRPC service.
335 config
= read_config(CERTMASTER_CONFIG
, CMConfig
)
336 listen_addr
= config
.listen_addr
337 listen_port
= config
.listen_port
338 if listen_port
== '':
339 listen_port
= CERTMASTER_LISTEN_PORT
340 server
= CertmasterXMLRPCServer((listen_addr
,listen_port
))
341 server
.logRequests
= 0 # don't print stuff to console
342 server
.register_instance(xmlrpcinstance
)
343 xmlrpcinstance
.logger
.info("certmaster started")
344 xmlrpcinstance
.audit_logger
.logger
.info("certmaster started")
345 server
.serve_forever()
347 def excepthook(exctype
, value
, tracebackobj
):
348 exctype_blurb
= "Exception occured: %s" % exctype
349 excvalue_blurb
= "Exception value: %s" % value
350 exctb_blurb
= "Exception Info:\n%s" % string
.join(traceback
.format_list(traceback
.extract_tb(tracebackobj
)))
356 log
= logger
.Logger().logger
357 log
.info(exctype_blurb
)
358 log
.info(excvalue_blurb
)
359 log
.info(exctb_blurb
)
364 sys
.excepthook
= excepthook
365 cm
= CertMaster('/etc/certmaster/certmaster.conf')
367 if "--version" in sys
.argv
or "-v" in sys
.argv
:
368 print >> sys
.stderr
, file("/etc/certmaster/version").read().strip()
371 if "daemon" in argv
or "--daemon" in argv
:
372 utils
.daemonize("/var/run/certmaster.pid")
376 # just let exceptions bubble up for now
380 if __name__
== "__main__":
381 #textdomain(I18N_DOMAIN)