return None for minion only setups to solve following exception;
[certmaster.git] / certmaster / certmaster.py
old mode 100755 (executable)
new mode 100644 (file)
index e1a7b36..981efd8
@@ -16,11 +16,25 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 # standard modules
 import SimpleXMLRPCServer
+import string
 import sys
+import traceback
 import os
 import os.path
 from OpenSSL import crypto
-import sha
+
+try:
+    import hashlib
+except ImportError:
+    # Python-2.4.z ... gah! (or even 2.3!)
+    import sha
+    class hashlib:
+        @staticmethod
+        def new(algo):
+            if algo == 'sha1':
+                return sha.new()
+            raise ValueError, "Bad checksum type"
+
 import glob
 import socket
 import exceptions
@@ -28,6 +42,9 @@ import exceptions
 import certs
 import codes
 import utils
+
+import logger
+
 from config import read_config
 from commonconfig import CMConfig
 
@@ -43,6 +60,14 @@ class CertMaster(object):
         mycn = '%s-CA-KEY' % usename
         self.ca_key_file = '%s/certmaster.key' % self.cfg.cadir
         self.ca_cert_file = '%s/certmaster.crt' % self.cfg.cadir
+
+        self.logger = logger.Logger().logger
+        self.audit_logger = logger.AuditLogger()
+
+        # if ca_key_file exists and ca_cert_file is missing == minion only setup
+        if os.path.exists(self.ca_key_file) and not os.path.exists(self.ca_cert_file):
+            return
+
         try:
             if not os.path.exists(self.cfg.cadir):
                 os.makedirs(self.cfg.cadir)
@@ -65,14 +90,17 @@ class CertMaster(object):
         self.handlers = {
                  'wait_for_cert': self.wait_for_cert,
                  }
+
         
     def _dispatch(self, method, params):
         if method == 'trait_names' or method == '_getAttributeNames':
             return self.handlers.keys()
-        
+
+
         if method in self.handlers.keys():
             return self.handlers[method](*params)
         else:
+            self.logger.info("Unhandled method call for method: %s " % method)
             raise codes.InvalidMethodException
     
     def _sanitize_cn(self, commonname):
@@ -80,7 +108,7 @@ class CertMaster(object):
         commonname = commonname.replace('\\', '')       
         return commonname
     
-    def wait_for_cert(self, csrbuf):
+    def wait_for_cert(self, csrbuf, with_triggers=True):
         """
            takes csr as a string
            returns True, caller_cert, ca_cert
@@ -94,7 +122,11 @@ class CertMaster(object):
             return False, '', ''
             
         requesting_host = self._sanitize_cn(csrreq.get_subject().CN)
-        
+
+        if with_triggers:
+            self._run_triggers(requesting_host, '/var/lib/certmaster/triggers/request/pre/*') 
+
+        self.logger.info("%s requested signing of cert %s" % (requesting_host,csrreq.get_subject().CN))
         # get rid of dodgy characters in the filename we're about to make
         
         certfile = '%s/%s.cert' % (self.cfg.certroot, requesting_host)
@@ -102,18 +134,22 @@ class CertMaster(object):
 
         # check for old csr on disk
         # if we have it - compare the two - if they are not the same - raise a fault
+        self.logger.debug("csrfile: %s  certfile: %s" % (csrfile, certfile))
+   
         if os.path.exists(csrfile):
             oldfo = open(csrfile)
             oldcsrbuf = oldfo.read()
-            oldsha = sha.new()
+            oldsha = hashlib.new('sha1')
             oldsha.update(oldcsrbuf)
             olddig = oldsha.hexdigest()
-            newsha = sha.new()
+            newsha = hashlib.new('sha1')
             newsha.update(csrbuf)
             newdig = newsha.hexdigest()
             if not newdig == olddig:
+                self.logger.info("A cert for %s already exists and does not match the requesting cert" % (requesting_host))
                 # XXX raise a proper fault
-                return False, '', ''
+            return False, '', ''
+        
 
         # look for a cert:
         # if we have it, then return True, etc, etc
@@ -121,6 +157,8 @@ class CertMaster(object):
             slavecert = certs.retrieve_cert_from_file(certfile)
             cert_buf = crypto.dump_certificate(crypto.FILETYPE_PEM, slavecert)
             cacert_buf = crypto.dump_certificate(crypto.FILETYPE_PEM, self.cacert)
+            if with_triggers:
+                self._run_triggers(requesting_host,'/var/lib/certmaster/triggers/request/post/*')
             return True, cert_buf, cacert_buf
         
         # if we don't have a cert then:
@@ -132,6 +170,9 @@ class CertMaster(object):
             cert = certs.retrieve_cert_from_file(cert_fn)            
             cert_buf = crypto.dump_certificate(crypto.FILETYPE_PEM, cert)
             cacert_buf = crypto.dump_certificate(crypto.FILETYPE_PEM, self.cacert)
+            self.logger.info("cert for %s was autosigned" % (requesting_host))
+            if with_triggers:
+                self._run_triggers(None,'/var/lib/certmaster/triggers/request/post/*')
             return True, cert_buf, cacert_buf
         
         else:
@@ -140,6 +181,9 @@ class CertMaster(object):
             destfo.write(crypto.dump_certificate_request(crypto.FILETYPE_PEM, csrreq))
             destfo.close()
             del destfo
+            self.logger.info("cert for %s created and ready to be signed" % (requesting_host))
+            if with_triggers:
+                self._run_triggers(None,'/var/lib/certmaster/triggers/request/post/*')
             return False, '', ''
 
         return False, '', ''
@@ -154,7 +198,7 @@ class CertMaster(object):
             hosts.append(hn)
         return hosts
    
-    def remove_this_cert(self, hn):
+    def remove_this_cert(self, hn, with_triggers=True):
         """ removes cert for hostname using unlink """
         cm = self
         csrglob = '%s/%s.csr' % (cm.cfg.csrroot, hn)
@@ -165,11 +209,16 @@ class CertMaster(object):
             # FIXME: should be an exception?
             print 'No match for %s to clean up' % hn
             return
+        if with_triggers:
+            self._run_triggers(hn,'/var/lib/certmaster/triggers/remove/pre/*')
         for fn in csrs + certs:
             print 'Cleaning out %s for host matching %s' % (fn, hn)
-            os.unlink(fn)         
+            self.logger.info('Cleaning out %s for host matching %s' % (fn, hn))
+            os.unlink(fn)
+        if with_triggers:
+            self._run_triggers(hn,'/var/lib/certmaster/triggers/remove/post/*')
             
-    def sign_this_csr(self, csr):
+    def sign_this_csr(self, csr, with_triggers=True):
         """returns the path to the signed cert file"""
         csr_unlink_file = None
 
@@ -191,28 +240,93 @@ class CertMaster(object):
             try:
                 csrreq = crypto.load_certificate_request(crypto.FILETYPE_PEM, csr_buf)                
             except crypto.Error, e:
+                self.logger.info("Unable to sign %s: Bad CSR" % (csr))
                 raise exceptions.Exception("Bad CSR: %s" % csr)
                 
         else: # assume we got a bare csr req
             csrreq = csr
+
+
         requesting_host = self._sanitize_cn(csrreq.get_subject().CN)
-        
+        if with_triggers:
+            self._run_triggers(requesting_host,'/var/lib/certmaster/triggers/sign/pre/*')
+
+
         certfile = '%s/%s.cert' % (self.cfg.certroot, requesting_host)
+        self.logger.info("Signing for csr %s requested" % certfile)
         thiscert = certs.create_slave_certificate(csrreq, self.cakey, self.cacert, self.cfg.cadir)
+
         destfo = open(certfile, 'w')
         destfo.write(crypto.dump_certificate(crypto.FILETYPE_PEM, thiscert))
         destfo.close()
         del destfo
+
+
+        self.logger.info("csr %s signed" % (certfile))
+        if with_triggers:
+            self._run_triggers(requesting_host,'/var/lib/certmaster/triggers/sign/post/*')
+
+        
         if csr_unlink_file and os.path.exists(csr_unlink_file):
             os.unlink(csr_unlink_file)
             
         return certfile
+
+    # return a list of already signed certs
+    def get_signed_certs(self, hostglobs=None):
+        certglob = "%s/*.cert" % (self.cfg.certroot)
+
+        certs = []
+        globs = "*"
+        if hostglobs:
+            globs = hostglobs
+
+        for hostglob in globs:
+            certglob = "%s/%s.cert" % (self.cfg.certroot, hostglob)
+            certs = certs + glob.glob(certglob)
+
+        signed_certs = []
+        for cert in certs:
+            # just want the hostname, so strip off path and ext
+            signed_certs.append(os.path.basename(cert).split(".cert", 1)[0])
+
+        return signed_certs
+
+    def get_peer_certs(self):
+        """
+        Returns a list of all certs under peerroot
+        """
+        myglob = os.path.join(self.cfg.peerroot, '*.%s' % self.cfg.cert_extension)
+        return glob.glob(myglob)
+
+    # return a list of the cert hash string we use to identify systems
+    def get_cert_hashes(self, hostglobs=None):
+        certglob = "%s/*.cert" % (self.cfg.certroot)
+
+        certfiles = []
+        globs = "*"
+        if hostglobs:
+            globs = hostglobs
+
+        for hostglob in globs:
+            certglob = "%s/%s.cert" % (self.cfg.certroot, hostglob)
+            certfiles = certfiles + glob.glob(certglob)
         
+        cert_hashes = []
+        for certfile in certfiles:
+            cert = certs.retrieve_cert_from_file(certfile)
+            cert_hashes.append("%s-%s" % (cert.get_subject().CN, cert.subject_name_hash()))
+            
+        return cert_hashes
+
+    def _run_triggers(self, ref, globber):
+        return utils.run_triggers(ref, globber)
+
 
 class CertmasterXMLRPCServer(SimpleXMLRPCServer.SimpleXMLRPCServer):
-    def __init__(self, args):
+    def __init__(self, addr):
         self.allow_reuse_address = True
-        SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(self, args)
+        SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(self, addr)
         
 
 def serve(xmlrpcinstance):
@@ -221,22 +335,48 @@ def serve(xmlrpcinstance):
     Code for starting the XMLRPC service.
     """
 
-    server = CertmasterXMLRPCServer((xmlrpcinstance.cfg.listen_addr, CERTMASTER_LISTEN_PORT))
+
+    config = read_config(CERTMASTER_CONFIG, CMConfig)
+    listen_addr = config.listen_addr
+    listen_port = config.listen_port
+    if listen_port == '':
+        listen_port = CERTMASTER_LISTEN_PORT 
+    server = CertmasterXMLRPCServer((listen_addr,listen_port))
     server.logRequests = 0 # don't print stuff to console
     server.register_instance(xmlrpcinstance)
+    xmlrpcinstance.logger.info("certmaster started")
+    xmlrpcinstance.audit_logger.logger.info("certmaster started")
     server.serve_forever()
 
+def excepthook(exctype, value, tracebackobj):
+    exctype_blurb = "Exception occured: %s" % exctype
+    excvalue_blurb = "Exception value: %s" % value
+    exctb_blurb = "Exception Info:\n%s" % string.join(traceback.format_list(traceback.extract_tb(tracebackobj)))
+
+    print exctype_blurb
+    print excvalue_blurb
+    print exctb_blurb
+
+    log = logger.Logger().logger 
+    log.info(exctype_blurb)
+    log.info(excvalue_blurb)
+    log.info(exctb_blurb)
+
 
 def main(argv):
-    
+   
+    sys.excepthook = excepthook  
     cm = CertMaster('/etc/certmaster/certmaster.conf')
 
+    if "--version" in sys.argv or "-v" in sys.argv:
+        print >> sys.stderr, file("/etc/certmaster/version").read().strip()
+        sys.exit(0)
+
     if "daemon" in argv or "--daemon" in argv:
         utils.daemonize("/var/run/certmaster.pid")
     else:
         print "serving...\n"
 
-
     # just let exceptions bubble up for now
     serve(cm)