-
-
- def getCredential(self):
- """
- Return a valid credential for this interface.
- """
- type = 'authority'
- path = self.config.SFA_DATA_DIR
- print >>sys.stderr,"FILENAME :", self.interface, self.hrn, type, "cred"
- filename = ".".join([self.interface, self.hrn, type, "cred"])
- cred_filename = path + os.sep + filename
- print>>sys.stderr, "|\r\n \r\n API.pPY getCredentialAUTHORITY cred_filename %s" %(cred_filename)
- cred = None
- if os.path.isfile(cred_filename):
- cred = Credential(filename = cred_filename)
- # make sure cred isnt expired
- if not cred.get_expiration or \
- datetime.datetime.today() < cred.get_expiration():
- return cred.save_to_string(save_parents=True)
-
- # get a new credential
- if self.interface in ['registry']:
- cred = self.__getCredentialRaw()
- else:
- cred = self.__getCredential()
- cred.save_to_file(cred_filename, save_parents=True)
-
- return cred.save_to_string(save_parents=True)
-
-
- def get_server(self, interface, cred, timeout=30):
- """
- Returns a connection to the specified interface. Use the specified
- credential to determine the caller and look for the caller's key/cert
- in the registry hierarchy cache.
- """
- from sfa.trust.hierarchy import Hierarchy
- if not isinstance(cred, Credential):
- cred_obj = Credential(string=cred)
- else:
- cred_obj = cred
- caller_gid = cred_obj.get_gid_caller()
- hierarchy = Hierarchy()
- auth_info = hierarchy.get_auth_info(caller_gid.get_hrn())
- key_file = auth_info.get_privkey_filename()
- cert_file = auth_info.get_gid_filename()
- server = interface.get_server(key_file, cert_file, timeout)
- return server
-
-
- def getDelegatedCredential(self, creds):
- """
- Attempt to find a credential delegated to us in
- the specified list of creds.
- """
- if creds and not isinstance(creds, list):
- creds = [creds]
- delegated_creds = filter_creds_by_caller(creds, [self.hrn, self.hrn + '.slicemanager'])
- if not delegated_creds:
- return None
- return delegated_creds[0]
-
- def __getCredential(self):
- """
- Get our credential from a remote registry
- """
- from sfa.server.registry import Registries
- registries = Registries()
- registry = registries.get_server(self.hrn, self.key_file, self.cert_file)
- #Sandrine 24 Oct 2 commented 2 following lines
- registries = Registries(self)
- registry = registries[self.hrn]
- print>>sys.stderr, " SenslabAPI.PY __getCredential registries %s self.hrn %s \t registry %s " %(registries,self.hrn,registry)
- cert_string=self.cert.save_to_string(save_parents=True)
- # get self credential
- self_cred = registry.GetSelfCredential(cert_string, self.hrn, 'authority')
- # get credential
- cred = registry.GetCredential(self_cred, self.hrn, 'authority')
- return Credential(string=cred)
-
- def __getCredentialRaw(self):
- """
- Get our current credential directly from the local registry.
- """
-
- hrn = self.hrn
- auth_hrn = self.auth.get_authority(hrn)
-
- # is this a root or sub authority
- if not auth_hrn or hrn == self.config.SFA_INTERFACE_HRN:
- auth_hrn = hrn
- auth_info = self.auth.get_auth_info(auth_hrn)
- table = self.SfaTable()
- records = table.findObjects({'hrn': hrn, 'type': 'authority+sa'})
- #Sandrine 24 Oct 2 commented following line
- records = table.findObjects(hrn)
-
- if not records:
- raise RecordNotFound
- record = records[0]
- type = record['type']
- object_gid = record.get_gid_object()
- new_cred = Credential(subject = object_gid.get_subject())
- new_cred.set_gid_caller(object_gid)
- new_cred.set_gid_object(object_gid)
- new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
-
- r1 = determine_rights(type, hrn)
- new_cred.set_privileges(r1)
- new_cred.encode()
- new_cred.sign()
-
- return new_cred
-
-
- def loadCredential (self):
- """
- Attempt to load credential from file if it exists. If it doesnt get
- credential from registry.
- """
-
- # see if this file exists
- # XX This is really the aggregate's credential. Using this is easier than getting
- # the registry's credential from iteslf (ssl errors).
- ma_cred_filename = self.config.SFA_DATA_DIR + os.sep + self.interface + self.hrn + ".ma.cred"
- try:
- self.credential = Credential(filename = ma_cred_filename)
- except IOError:
- self.credential = self.getCredentialFromRegistry()
-