import types import time # for get_key_from_incoming_ip import tempfile import os import commands from sfa.util.faults import RecordNotFound, AccountNotEnabled, PermissionError, MissingAuthority, \ UnknownSfaType, ExistingRecord, NonExistingRecord from sfa.util.prefixTree import prefixTree from sfa.util.xrn import Xrn, get_authority, hrn_to_urn, urn_to_hrn from sfa.util.plxrn import hrn_to_pl_login_base from sfa.util.version import version_core from sfa.util.sfalogging import logger from sfa.trust.gid import GID from sfa.trust.credential import Credential from sfa.trust.certificate import Certificate, Keypair, convert_public_key from sfa.trust.gid import create_uuid from sfa.storage.record import SfaRecord from sfa.storage.table import SfaTable class RegistryManager: def __init__ (self, config): pass # The GENI GetVersion call def GetVersion(self, api, options): peers = dict ( [ (hrn,interface.get_url()) for (hrn,interface) in api.registries.iteritems() if hrn != api.hrn]) xrn=Xrn(api.hrn) return version_core({'interface':'registry', 'hrn':xrn.get_hrn(), 'urn':xrn.get_urn(), 'peers':peers}) def GetCredential(self, api, xrn, type, is_self=False): # convert xrn to hrn if type: hrn = urn_to_hrn(xrn)[0] else: hrn, type = urn_to_hrn(xrn) # Is this a root or sub authority auth_hrn = api.auth.get_authority(hrn) if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN: auth_hrn = hrn # get record info auth_info = api.auth.get_auth_info(auth_hrn) table = SfaTable() records = table.findObjects({'type': type, 'hrn': hrn}) if not records: raise RecordNotFound(hrn) record = records[0] # verify_cancreate_credential requires that the member lists # (researchers, pis, etc) be filled in self.driver.augment_records_with_testbed_info (record) if not self.driver.is_enabled (record): raise AccountNotEnabled(": PlanetLab account %s is not enabled. Please contact your site PI" %(record['email'])) # get the callers gid # if this is a self cred the record's gid is the caller's gid if is_self: caller_hrn = hrn caller_gid = record.get_gid_object() else: caller_gid = api.auth.client_cred.get_gid_caller() caller_hrn = caller_gid.get_hrn() object_hrn = record.get_gid_object().get_hrn() rights = api.auth.determine_user_rights(caller_hrn, record) # make sure caller has rights to this object if rights.is_empty(): raise PermissionError(caller_hrn + " has no rights to " + record['name']) object_gid = GID(string=record['gid']) new_cred = Credential(subject = object_gid.get_subject()) new_cred.set_gid_caller(caller_gid) new_cred.set_gid_object(object_gid) new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename()) #new_cred.set_pubkey(object_gid.get_pubkey()) new_cred.set_privileges(rights) new_cred.get_privileges().delegate_all_privileges(True) if 'expires' in record: new_cred.set_expiration(int(record['expires'])) auth_kind = "authority,ma,sa" # Parent not necessary, verify with certs #new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind)) new_cred.encode() new_cred.sign() return new_cred.save_to_string(save_parents=True) def Resolve(self, api, xrns, type=None, full=True): if not isinstance(xrns, types.ListType): xrns = [xrns] # try to infer type if not set and we get a single input if not type: type = Xrn(xrns).get_type() hrns = [urn_to_hrn(xrn)[0] for xrn in xrns] # load all known registry names into a prefix tree and attempt to find # the longest matching prefix # create a dict where key is a registry hrn and its value is a # hrns at that registry (determined by the known prefix tree). xrn_dict = {} registries = api.registries tree = prefixTree() registry_hrns = registries.keys() tree.load(registry_hrns) for xrn in xrns: registry_hrn = tree.best_match(urn_to_hrn(xrn)[0]) if registry_hrn not in xrn_dict: xrn_dict[registry_hrn] = [] xrn_dict[registry_hrn].append(xrn) records = [] for registry_hrn in xrn_dict: # skip the hrn without a registry hrn # XX should we let the user know the authority is unknown? if not registry_hrn: continue # if the best match (longest matching hrn) is not the local registry, # forward the request xrns = xrn_dict[registry_hrn] if registry_hrn != api.hrn: credential = api.getCredential() interface = api.registries[registry_hrn] server_proxy = api.server_proxy(interface, credential) peer_records = server_proxy.Resolve(xrns, credential) records.extend([SfaRecord(dict=record).as_dict() for record in peer_records]) # try resolving the remaining unfound records at the local registry local_hrns = list ( set(hrns).difference([record['hrn'] for record in records]) ) # table = SfaTable() local_records = table.findObjects({'hrn': local_hrns}) if full: # in full mode we get as much info as we can, which involves contacting the # testbed for getting implementation details about the record self.driver.augment_records_with_testbed_info(local_records) # also we fill the 'url' field for known authorities # used to be in the driver code, sounds like a poorman thing though def solve_neighbour_url (record): if not record['type'].startswith('authority'): return hrn=record['hrn'] for neighbour_dict in [ api.aggregates, api.registries ]: if hrn in neighbour_dict: record['url']=neighbour_dict[hrn].get_url() return [ solve_neighbour_url (record) for record in local_records ] # convert local record objects to dicts records.extend([dict(record) for record in local_records]) if type: records = filter(lambda rec: rec['type'] in [type], records) if not records: raise RecordNotFound(str(hrns)) return records def List(self, api, xrn, origin_hrn=None): hrn, type = urn_to_hrn(xrn) # load all know registry names into a prefix tree and attempt to find # the longest matching prefix records = [] registries = api.registries registry_hrns = registries.keys() tree = prefixTree() tree.load(registry_hrns) registry_hrn = tree.best_match(hrn) #if there was no match then this record belongs to an unknow registry if not registry_hrn: raise MissingAuthority(xrn) # if the best match (longest matching hrn) is not the local registry, # forward the request records = [] if registry_hrn != api.hrn: credential = api.getCredential() interface = api.registries[registry_hrn] server_proxy = api.server_proxy(interface, credential) record_list = server_proxy.List(xrn, credential) records = [SfaRecord(dict=record).as_dict() for record in record_list] # if we still have not found the record yet, try the local registry if not records: if not api.auth.hierarchy.auth_exists(hrn): raise MissingAuthority(hrn) table = SfaTable() records = table.find({'authority': hrn}) return records def CreateGid(self, api, xrn, cert): # get the authority authority = Xrn(xrn=xrn).get_authority_hrn() auth_info = api.auth.get_auth_info(authority) if not cert: pkey = Keypair(create=True) else: certificate = Certificate(string=cert) pkey = certificate.get_pubkey() gid = api.auth.hierarchy.create_gid(xrn, create_uuid(), pkey) return gid.save_to_string(save_parents=True) #################### # utility for handling relationships among the SFA objects # given that the SFA db does not handle this sort of relationsships # it will rely on side-effects in the testbed to keep this persistent # subject_record describes the subject of the relationships # ref_record contains the target values for the various relationships we need to manage # (to begin with, this is just the slice x person relationship) def update_relations (self, subject_record, ref_record): type=subject_record['type'] if type=='slice': self.update_relation(subject_record, 'researcher', ref_record.get('researcher'), 'user') # field_key is the name of one field in the record, typically 'researcher' for a 'slice' record # hrns is the list of hrns that should be linked to the subject from now on # target_type would be e.g. 'user' in the 'slice' x 'researcher' example def update_relation (self, sfa_record, field_key, hrns, target_type): # locate the linked objects in our db subject_type=sfa_record['type'] subject_id=sfa_record['pointer'] table = SfaTable() link_sfa_records = table.find ({'type':target_type, 'hrn': hrns}) link_ids = [ rec.get('pointer') for rec in link_sfa_records ] self.driver.update_relation (subject_type, target_type, subject_id, link_ids) def Register(self, api, record): hrn, type = record['hrn'], record['type'] urn = hrn_to_urn(hrn,type) # validate the type if type not in ['authority', 'slice', 'node', 'user']: raise UnknownSfaType(type) # check if record already exists table = SfaTable() existing_records = table.find({'type': type, 'hrn': hrn}) if existing_records: raise ExistingRecord(hrn) record = SfaRecord(dict = record) record['authority'] = get_authority(record['hrn']) auth_info = api.auth.get_auth_info(record['authority']) pub_key = None # make sure record has a gid if 'gid' not in record: uuid = create_uuid() pkey = Keypair(create=True) if 'keys' in record and record['keys']: pub_key=record['keys'] # use only first key in record if isinstance(record['keys'], types.ListType): pub_key = record['keys'][0] pkey = convert_public_key(pub_key) gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey) gid = gid_object.save_to_string(save_parents=True) record['gid'] = gid record.set_gid(gid) if type in ["authority"]: # update the tree if not api.auth.hierarchy.auth_exists(hrn): api.auth.hierarchy.create_auth(hrn_to_urn(hrn,'authority')) # get the GID from the newly created authority gid = auth_info.get_gid_object() record.set_gid(gid.save_to_string(save_parents=True)) # update testbed-specific data if needed pointer = self.driver.register (record, hrn, pub_key) record.set_pointer(pointer) record_id = table.insert(record) record['record_id'] = record_id # update membership for researchers, pis, owners, operators self.update_relations (record, record) return record.get_gid_object().save_to_string(save_parents=True) def Update(self, api, record_dict): new_record = SfaRecord(dict = record_dict) type = new_record['type'] hrn = new_record['hrn'] urn = hrn_to_urn(hrn,type) table = SfaTable() # make sure the record exists records = table.findObjects({'type': type, 'hrn': hrn}) if not records: raise RecordNotFound(hrn) record = records[0] record['last_updated'] = time.gmtime() # validate the type if type not in ['authority', 'slice', 'node', 'user']: raise UnknownSfaType(type) # Use the pointer from the existing record, not the one that the user # gave us. This prevents the user from inserting a forged pointer pointer = record['pointer'] # is the a change in keys ? new_key=None if type=='user': if 'keys' in new_record and new_record['keys']: new_key=new_record['keys'] if isinstance (new_key,types.ListType): new_key=new_key[0] # update the PLC information that was specified with the record if not self.driver.update (record, new_record, hrn, new_key): logger.warning("driver.update failed") # take new_key into account if new_key: # update the openssl key and gid pkey = convert_public_key(new_key) uuid = create_uuid() gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey) gid = gid_object.save_to_string(save_parents=True) record['gid'] = gid record = SfaRecord(dict=record) table.update(record) # update membership for researchers, pis, owners, operators self.update_relations (record, new_record) return 1 # expecting an Xrn instance def Remove(self, api, xrn, origin_hrn=None): table = SfaTable() filter = {'hrn': xrn.get_hrn()} hrn=xrn.get_hrn() type=xrn.get_type() if type and type not in ['all', '*']: filter['type'] = type records = table.find(filter) if not records: raise RecordNotFound(hrn) record = records[0] type = record['type'] if type not in ['slice', 'user', 'node', 'authority'] : raise UnknownSfaType(type) credential = api.getCredential() registries = api.registries # Try to remove the object from the PLCDB of federated agg. # This is attempted before removing the object from the local agg's PLCDB and sfa table if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']: for registry in registries: if registry not in [api.hrn]: try: result=registries[registry].remove_peer_object(credential, record, origin_hrn) except: pass # call testbed callback first # IIUC this is done on the local testbed TOO because of the refreshpeer link if not self.driver.remove(record): logger.warning("driver.remove failed") # delete from sfa db table.remove(record) return 1 # This is a PLC-specific thing... def get_key_from_incoming_ip (self, api): # verify that the callers's ip address exist in the db and is an interface # for a node in the db (ip, port) = api.remote_addr interfaces = self.driver.GetInterfaces({'ip': ip}, ['node_id']) if not interfaces: raise NonExistingRecord("no such ip %(ip)s" % locals()) nodes = self.driver.GetNodes([interfaces[0]['node_id']], ['node_id', 'hostname']) if not nodes: raise NonExistingRecord("no such node using ip %(ip)s" % locals()) node = nodes[0] # look up the sfa record table = SfaTable() records = table.findObjects({'type': 'node', 'pointer': node['node_id']}) if not records: raise RecordNotFound("pointer:" + str(node['node_id'])) record = records[0] # generate a new keypair and gid uuid = create_uuid() pkey = Keypair(create=True) urn = hrn_to_urn(record['hrn'], record['type']) gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey) gid = gid_object.save_to_string(save_parents=True) record['gid'] = gid record.set_gid(gid) # update the record table.update(record) # attempt the scp the key # and gid onto the node # this will only work for planetlab based components (kfd, key_filename) = tempfile.mkstemp() (gfd, gid_filename) = tempfile.mkstemp() pkey.save_to_file(key_filename) gid_object.save_to_file(gid_filename, save_parents=True) host = node['hostname'] key_dest="/etc/sfa/node.key" gid_dest="/etc/sfa/node.gid" scp = "/usr/bin/scp" #identity = "/etc/planetlab/root_ssh_key.rsa" identity = "/etc/sfa/root_ssh_key" scp_options=" -i %(identity)s " % locals() scp_options+="-o StrictHostKeyChecking=no " % locals() scp_key_command="%(scp)s %(scp_options)s %(key_filename)s root@%(host)s:%(key_dest)s" %\ locals() scp_gid_command="%(scp)s %(scp_options)s %(gid_filename)s root@%(host)s:%(gid_dest)s" %\ locals() all_commands = [scp_key_command, scp_gid_command] for command in all_commands: (status, output) = commands.getstatusoutput(command) if status: raise Exception, output for filename in [key_filename, gid_filename]: os.unlink(filename) return 1