sfa/senslab/api.py

   1 #
   2 # SFA XML-RPC and SOAP interfaces
   3 #
   4
   5 import sys
   6 import os
   7 import traceback
   8 import string
   9 import datetime
  10 import xmlrpclib
  11
  12 from sfa.util.faults import *
  13 from sfa.util.api import *
  14 from sfa.util.config import *
  15 from sfa.util.sfalogging import sfa_logger
  16 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
  17 from sfa.trust.auth import Auth
  18 from sfa.trust.rights import Right, Rights, determine_rights
  19 from sfa.trust.credential import Credential,Keypair
  20 from sfa.trust.certificate import Certificate
  21 from sfa.util.xrn import get_authority, hrn_to_urn
  22 from sfa.util.plxrn import hostname_to_hrn, hrn_to_pl_slicename, hrn_to_pl_slicename, slicename_to_hrn
  23 from sfa.util.nodemanager import NodeManager
  24
  25 from sfa.senslab.OARrestapi import *
  26 from sfa.senslab.SenslabImportUsers import *
  27
  28 try:
  29     from collections import defaultdict
  30 except:
  31     class defaultdict(dict):
  32         def __init__(self, default_factory=None, *a, **kw):
  33             if (default_factory is not None and
  34                 not hasattr(default_factory, '__call__')):
  35                 raise TypeError('first argument must be callable')
  36             dict.__init__(self, *a, **kw)
  37             self.default_factory = default_factory
  38         def __getitem__(self, key):
  39             try:
  40                 return dict.__getitem__(self, key)
  41             except KeyError:
  42                 return self.__missing__(key)
  43         def __missing__(self, key):
  44             if self.default_factory is None:
  45                 raise KeyError(key)
  46             self[key] = value = self.default_factory()
  47             return value
  48         def __reduce__(self):
  49             if self.default_factory is None:
  50                 args = tuple()
  51             else:
  52                 args = self.default_factory,
  53             return type(self), args, None, None, self.items()
  54         def copy(self):
  55             return self.__copy__()
  56         def __copy__(self):
  57             return type(self)(self.default_factory, self)
  58         def __deepcopy__(self, memo):
  59             import copy
  60             return type(self)(self.default_factory,
  61                               copy.deepcopy(self.items()))
  62         def __repr__(self):
  63             return 'defaultdict(%s, %s)' % (self.default_factory,
  64                                             dict.__repr__(self))
  65 ## end of http://code.activestate.com/recipes/523034/ }}}
  66
  67 def list_to_dict(recs, key):
  68     """
  69     convert a list of dictionaries into a dictionary keyed on the
  70     specified dictionary key
  71     """
  72    # print>>sys.stderr, " \r\n \t\t 1list_to_dict : rec %s  \r\n \t\t list_to_dict key %s" %(recs,key)
  73     keys = [rec[key] for rec in recs]
  74     print>>sys.stderr, " \r\n \t\t list_to_dict : rec %s  \r\n \t\t list_to_dict keys %s" %(recs,keys)
  75     return dict(zip(keys, recs))
  76
  77 class SfaAPI(BaseAPI):
  78
  79     # flat list of method names
  80     import sfa.methods
  81     methods = sfa.methods.all
  82
  83     def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8",
  84                  methods='sfa.methods', peer_cert = None, interface = None,
  85                 key_file = None, cert_file = None, cache = None):
  86         BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, \
  87                          peer_cert=peer_cert, interface=interface, key_file=key_file, \
  88                          cert_file=cert_file, cache=cache)
  89
  90         self.encoding = encoding
  91         from sfa.util.table import SfaTable
  92         self.SfaTable = SfaTable
  93         # Better just be documenting the API
  94         if config is None:
  95             return
  96         print >>sys.stderr, "\r\n_____________ SFA SENSLAB API \r\n"
  97         # Load configuration
  98         self.config = Config(config)
  99         self.auth = Auth(peer_cert)
 100         self.interface = interface
 101         self.key_file = key_file
 102         self.key = Keypair(filename=self.key_file)
 103         self.cert_file = cert_file
 104         self.cert = Certificate(filename=self.cert_file)
 105         self.credential = None
 106         # Initialize the PLC shell only if SFA wraps a myPLC
 107         rspec_type = self.config.get_aggregate_type()
 108         self.oar = OARapi()
 109         self.users = SenslabImportUsers()
 110         self.hrn = self.config.SFA_INTERFACE_HRN
 111         self.time_format = "%Y-%m-%d %H:%M:%S"
 112         self.logger=sfa_logger()
 113         print >>sys.stderr, "\r\n \t\t___________PLC/API.PY  __init__ STOP ",self.interface #dir(self)
 114
 115
 116     #def getPLCShell(self):
 117         #self.plauth = {'Username': self.config.SFA_PLC_USER,
 118                        #'AuthMethod': 'password',
 119                        #'AuthString': self.config.SFA_PLC_PASSWORD}
 120         #try:
 121             #print >>sys.stderr, "\r\n \t\t___________PLC/API.PY  getPLCShell "
 122             #sys.path.append(os.path.dirname(os.path.realpath("/usr/bin/plcsh")))
 123             #self.plshell_type = 'direct'
 124             #import PLC.Shell
 125             #shell = PLC.Shell.Shell(globals = globals())
 126             #print >>sys.stderr, "\r\n \t\t____tryshell %s \r\n  type %s \r\n %s"%(shell, type(shell), dir(shell))
 127
 128         #except:
 129             #self.plshell_type = 'xmlrpc'
 130             #print >>sys.stderr, "\r\n \t\t___________PLC/API.PY  getPLCShell  xmlrpc"
 131             #url = self.config.SFA_PLC_URL
 132             #shell = xmlrpclib.Server(url, verbose = 0, allow_none = True)
 133
 134         #return shell
 135
 136     def getCredential(self):
 137         """
 138         Return a valid credential for this interface.
 139         """
 140         type = 'authority'
 141         path = self.config.SFA_DATA_DIR
 142         filename = ".".join([self.interface, self.hrn, type, "cred"])
 143         cred_filename = path + os.sep + filename
 144         cred = None
 145         if os.path.isfile(cred_filename):
 146             cred = Credential(filename = cred_filename)
 147             # make sure cred isnt expired
 148             if not cred.get_expiration or \
 149                datetime.datetime.today() < cred.get_expiration():
 150                 return cred.save_to_string(save_parents=True)
 151
 152         # get a new credential
 153         if self.interface in ['registry']:
 154             cred =  self.__getCredentialRaw()
 155         else:
 156             cred =  self.__getCredential()
 157         cred.save_to_file(cred_filename, save_parents=True)
 158
 159         return cred.save_to_string(save_parents=True)
 160
 161
 162     def getDelegatedCredential(self, creds):
 163         """
 164         Attempt to find a credential delegated to us in
 165         the specified list of creds.
 166         """
 167         if creds and not isinstance(creds, list):
 168             creds = [creds]
 169         delegated_creds = filter_creds_by_caller(creds,self.hrn)
 170         if not delegated_creds:
 171             return None
 172         return delegated_creds[0]
 173
 174     def __getCredential(self):
 175         """
 176         Get our credential from a remote registry
 177         """
 178         from sfa.server.registry import Registries
 179         registries = Registries(self)
 180         registry = registries[self.hrn]
 181         cert_string=self.cert.save_to_string(save_parents=True)
 182         # get self credential
 183         self_cred = registry.GetSelfCredential(cert_string, self.hrn, 'authority')
 184         # get credential
 185         cred = registry.GetCredential(self_cred, self.hrn, 'authority')
 186         return Credential(string=cred)
 187
 188     def __getCredentialRaw(self):
 189         """
 190         Get our current credential directly from the local registry.
 191         """
 192
 193         hrn = self.hrn
 194         auth_hrn = self.auth.get_authority(hrn)
 195
 196         # is this a root or sub authority
 197         if not auth_hrn or hrn == self.config.SFA_INTERFACE_HRN:
 198             auth_hrn = hrn
 199         auth_info = self.auth.get_auth_info(auth_hrn)
 200         table = self.SfaTable()
 201         records = table.findObjects(hrn)
 202         if not records:
 203             raise RecordNotFound
 204         record = records[0]
 205         type = record['type']
 206         object_gid = record.get_gid_object()
 207         new_cred = Credential(subject = object_gid.get_subject())
 208         new_cred.set_gid_caller(object_gid)
 209         new_cred.set_gid_object(object_gid)
 210         new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
 211
 212         r1 = determine_rights(type, hrn)
 213         new_cred.set_privileges(r1)
 214         new_cred.encode()
 215         new_cred.sign()
 216
 217         return new_cred
 218
 219
 220     def loadCredential (self):
 221         """
 222         Attempt to load credential from file if it exists. If it doesnt get
 223         credential from registry.
 224         """
 225
 226         # see if this file exists
 227         # XX This is really the aggregate's credential. Using this is easier than getting
 228         # the registry's credential from iteslf (ssl errors).
 229         ma_cred_filename = self.config.SFA_DATA_DIR + os.sep + self.interface + self.hrn + ".ma.cred"
 230         try:
 231             self.credential = Credential(filename = ma_cred_filename)
 232         except IOError:
 233             self.credential = self.getCredentialFromRegistry()
 234
 235     ##
 236     # Convert SFA fields to PLC fields for use when registering up updating
 237     # registry record in the PLC database
 238     #
 239     # @param type type of record (user, slice, ...)
 240     # @param hrn human readable name
 241     # @param sfa_fields dictionary of SFA fields
 242     # @param pl_fields dictionary of PLC fields (output)
 243
 244     def sfa_fields_to_pl_fields(self, type, hrn, record):
 245
 246         def convert_ints(tmpdict, int_fields):
 247             for field in int_fields:
 248                 if field in tmpdict:
 249                     tmpdict[field] = int(tmpdict[field])
 250
 251         pl_record = {}
 252         #for field in record:
 253         #    pl_record[field] = record[field]
 254
 255         if type == "slice":
 256             if not "instantiation" in pl_record:
 257                 pl_record["instantiation"] = "plc-instantiated"
 258             pl_record["name"] = hrn_to_pl_slicename(hrn)
 259             if "url" in record:
 260                pl_record["url"] = record["url"]
 261             if "description" in record:
 262                 pl_record["description"] = record["description"]
 263             if "expires" in record:
 264                 pl_record["expires"] = int(record["expires"])
 265
 266         elif type == "node":
 267             if not "hostname" in pl_record:
 268                 if not "hostname" in record:
 269                     raise MissingSfaInfo("hostname")
 270                 pl_record["hostname"] = record["hostname"]
 271             if not "model" in pl_record:
 272                 pl_record["model"] = "geni"
 273
 274         elif type == "authority":
 275             pl_record["login_base"] = hrn_to_pl_login_base(hrn)
 276
 277             if not "name" in pl_record:
 278                 pl_record["name"] = hrn
 279
 280             if not "abbreviated_name" in pl_record:
 281                 pl_record["abbreviated_name"] = hrn
 282
 283             if not "enabled" in pl_record:
 284                 pl_record["enabled"] = True
 285
 286             if not "is_public" in pl_record:
 287                 pl_record["is_public"] = True
 288
 289         return pl_record
 290
 291     def fill_record_pl_info(self, records):
 292         """
 293         Fill in the planetlab specific fields of a SFA record. This
 294         involves calling the appropriate PLC method to retrieve the
 295         database record for the object.
 296
 297         PLC data is filled into the pl_info field of the record.
 298
 299         @param record: record to fill in field (in/out param)
 300         """
 301         # get ids by type
 302         print>>sys.stderr, "\r\n \t\t \t fill_record_pl_info : entering... \r\n"
 303         node_ids, site_ids, slice_ids = [], [], []
 304         person_ids, key_ids = [], []
 305         type_map = {'node': node_ids, 'authority': site_ids,
 306                     'slice': slice_ids, 'user': person_ids}
 307
 308         for record in records:
 309             for type in type_map:
 310                 print>>sys.stderr, "\r\n \t\t \t fill_record_pl_info : type %s. record['pointer'] %s "%(type,record['pointer'])
 311                 if type == record['type']:
 312                     type_map[type].append(record['pointer'])
 313         print>>sys.stderr, "\r\n \t\t \t fill_record_pl_info : records %s... \r\n \t\t \t fill_record_pl_info : type_map   %s"%(records,type_map)
 314         # get pl records
 315         nodes, sites, slices, persons, keys = {}, {}, {}, {}, {}
 316         if node_ids:
 317             node_list = self.oar.GetNodes( node_ids)
 318             print>>sys.stderr, " \r\n \t\t\t BEFORE LIST_TO_DICT_NODES node_ids : %s" %(node_ids)
 319             nodes = list_to_dict(node_list, 'node_id')
 320         if site_ids:
 321             site_list = self.oar.GetSites( site_ids)
 322             sites = list_to_dict(site_list, 'site_id')
 323         if slice_ids:
 324             slice_list = self.oar.GetSlices( slice_ids)
 325             slices = list_to_dict(slice_list, 'slice_id')
 326         if person_ids:
 327             print>>sys.stderr, " \r\n \t\t \t fill_record_pl_info BEFORE GetPersons  person_ids: %s" %(person_ids)
 328             person_list = self.users.GetPersons( person_ids)
 329             persons = list_to_dict(person_list, 'person_id')
 330             print>>sys.stderr, "\r\n  fill_record_pl_info persons %s \r\n \t\t person_ids %s " %(persons, person_ids)
 331             for person in persons:
 332                 key_ids.extend(persons[person]['key_ids'])
 333                 print>>sys.stderr, "\r\n key_ids %s " %(key_ids)
 334
 335         pl_records = {'node': nodes, 'authority': sites,
 336                       'slice': slices, 'user': persons}
 337
 338         if key_ids:
 339             key_list = self.users.GetKeys( key_ids)
 340             keys = list_to_dict(key_list, 'key_id')
 341            # print>>sys.stderr, "\r\n  fill_record_pl_info persons %s \r\n \t\t keys %s " %(keys)
 342         # fill record info
 343         for record in records:
 344             # records with pointer==-1 do not have plc info.
 345             # for example, the top level authority records which are
 346             # authorities, but not PL "sites"
 347             if record['pointer'] == -1:
 348                 continue
 349
 350             for type in pl_records:
 351                 if record['type'] == type:
 352                     if record['pointer'] in pl_records[type]:
 353                         record.update(pl_records[type][record['pointer']])
 354                         break
 355             # fill in key info
 356             if record['type'] == 'user':
 357                  if 'key_ids' not in record:
 358                         print>>sys.stderr, " NO_KEY_IDS fill_record_pl_info key_ids record: %s" %(record)
 359                  else:
 360                         pubkeys = [keys[key_id]['key'] for key_id in record['key_ids'] if key_id in keys]
 361                         record['keys'] = pubkeys
 362
 363         # fill in record hrns
 364         records = self.fill_record_hrns(records)
 365
 366         return records
 367
 368     def fill_record_hrns(self, records):
 369         """
 370         convert pl ids to hrns
 371         """
 372
 373         # get ids
 374         slice_ids, person_ids, site_ids, node_ids = [], [], [], []
 375         for record in records:
 376             if 'site_id' in record:
 377                 site_ids.append(record['site_id'])
 378             if 'site_ids' in records:
 379                 site_ids.extend(record['site_ids'])
 380             if 'person_ids' in record:
 381                 person_ids.extend(record['person_ids'])
 382             if 'slice_ids' in record:
 383                 slice_ids.extend(record['slice_ids'])
 384             if 'node_ids' in record:
 385                 node_ids.extend(record['node_ids'])
 386
 387         # get pl records
 388         slices, persons, sites, nodes = {}, {}, {}, {}
 389         if site_ids:
 390             site_list = self.oar.GetSites( site_ids, ['site_id', 'login_base'])
 391             sites = list_to_dict(site_list, 'site_id')
 392             print>>sys.stderr, " \r\n \r\n \t\t ____ site_list %s \r\n \t\t____ sites %s " % (site_list,sites)
 393         if person_ids:
 394             person_list = self.users.GetPersons( person_ids, ['person_id', 'email'])
 395             persons = list_to_dict(person_list, 'person_id')
 396         if slice_ids:
 397             slice_list = self.oar.GetSlices( slice_ids, ['slice_id', 'name'])
 398             slices = list_to_dict(slice_list, 'slice_id')
 399         if node_ids:
 400             node_list = self.oar.GetNodes( node_ids, ['node_id', 'hostname'])
 401             nodes = list_to_dict(node_list, 'node_id')
 402
 403         # convert ids to hrns
 404         for record in records:
 405
 406             # get all relevant data
 407             type = record['type']
 408             pointer = record['pointer']
 409             auth_hrn = self.hrn
 410             login_base = ''
 411             if pointer == -1:
 412                 continue
 413
 414             print>>sys.stderr, " \r\n \r\n \t\t fill_record_hrns : sites %s \r\n \t\t record %s " %(sites, record)
 415             if 'site_id' in record:
 416                 site = sites[record['site_id']]
 417                 print>>sys.stderr, " \r\n \r\n \t\t \t fill_record_hrns : sites %s \r\n \t\t\t site sites[record['site_id']] %s " %(sites,site)
 418                 login_base = site['login_base']
 419                 record['site'] = ".".join([auth_hrn, login_base])
 420             if 'person_ids' in record:
 421                 emails = [persons[person_id]['email'] for person_id in record['person_ids'] \
 422                           if person_id in  persons]
 423                 usernames = [email.split('@')[0] for email in emails]
 424                 person_hrns = [".".join([auth_hrn, login_base, username]) for username in usernames]
 425                 record['persons'] = person_hrns
 426             if 'slice_ids' in record:
 427                 slicenames = [slices[slice_id]['name'] for slice_id in record['slice_ids'] \
 428                               if slice_id in slices]
 429                 slice_hrns = [slicename_to_hrn(auth_hrn, slicename) for slicename in slicenames]
 430                 record['slices'] = slice_hrns
 431             if 'node_ids' in record:
 432                 hostnames = [nodes[node_id]['hostname'] for node_id in record['node_ids'] \
 433                              if node_id in nodes]
 434                 node_hrns = [hostname_to_hrn(auth_hrn, login_base, hostname) for hostname in hostnames]
 435                 record['nodes'] = node_hrns
 436             if 'site_ids' in record:
 437                 login_bases = [sites[site_id]['login_base'] for site_id in record['site_ids'] \
 438                                if site_id in sites]
 439                 site_hrns = [".".join([auth_hrn, lbase]) for lbase in login_bases]
 440                 record['sites'] = site_hrns
 441
 442         return records
 443
 444     def fill_record_sfa_info(self, records):
 445
 446         def startswith(prefix, values):
 447             return [value for value in values if value.startswith(prefix)]
 448
 449         SenslabUsers = SenslabImportUsers()
 450         # get person ids
 451         person_ids = []
 452         site_ids = []
 453         for record in records:
 454             person_ids.extend(record.get("person_ids", []))
 455             site_ids.extend(record.get("site_ids", []))
 456             if 'site_id' in record:
 457                 site_ids.append(record['site_id'])
 458
 459         print>>sys.stderr, "\r\n \r\n _fill_record_sfa_info ___person_ids %s \r\n \t\t site_ids %s " %(person_ids, site_ids)
 460
 461         # get all pis from the sites we've encountered
 462         # and store them in a dictionary keyed on site_id
 463         site_pis = {}
 464         if site_ids:
 465             pi_filter = {'|roles': ['pi'], '|site_ids': site_ids}
 466             pi_list = SenslabUsers.GetPersons( pi_filter, ['person_id', 'site_ids'])
 467             print>>sys.stderr, "\r\n \r\n _fill_record_sfa_info ___ GetPersons ['person_id', 'site_ids'] pi_ilist %s" %(pi_list)
 468
 469             for pi in pi_list:
 470                 # we will need the pi's hrns also
 471                 person_ids.append(pi['person_id'])
 472
 473                 # we also need to keep track of the sites these pis
 474                 # belong to
 475                 for site_id in pi['site_ids']:
 476                     if site_id in site_pis:
 477                         site_pis[site_id].append(pi)
 478                     else:
 479                         site_pis[site_id] = [pi]
 480
 481         # get sfa records for all records associated with these records.
 482         # we'll replace pl ids (person_ids) with hrns from the sfa records
 483         # we obtain
 484
 485         # get the sfa records
 486         table = self.SfaTable()
 487         person_list, persons = [], {}
 488         person_list = table.find({'type': 'user', 'pointer': person_ids})
 489         # create a hrns keyed on the sfa record's pointer.
 490         # Its possible for  multiple records to have the same pointer so
 491         # the dict's value will be a list of hrns.
 492         persons = defaultdict(list)
 493         for person in person_list:
 494             persons[person['pointer']].append(person)
 495
 496         # get the pl records
 497         pl_person_list, pl_persons = [], {}
 498         pl_person_list = SenslabUsers.GetPersons(person_ids, ['person_id', 'roles'])
 499         pl_persons = list_to_dict(pl_person_list, 'person_id')
 500         print>>sys.stderr, "\r\n \r\n _fill_record_sfa_info ___  _list %s \r\n \t\tplshell.GetPersons ['person_id', 'roles'] pl_persons %s " %(pl_person_list, pl_persons)
 501         # fill sfa info
 502         for record in records:
 503             # skip records with no pl info (top level authorities)
 504             if record['pointer'] == -1:
 505                 continue
 506             sfa_info = {}
 507             type = record['type']
 508             if (type == "slice"):
 509                 # all slice users are researchers
 510                 record['PI'] = []
 511                 record['researcher'] = []
 512                 for person_id in record['person_ids']:
 513                     hrns = [person['hrn'] for person in persons[person_id]]
 514                     record['researcher'].extend(hrns)
 515
 516                 # pis at the slice's site
 517                 pl_pis = site_pis[record['site_id']]
 518                 pi_ids = [pi['person_id'] for pi in pl_pis]
 519                 for person_id in pi_ids:
 520                     hrns = [person['hrn'] for person in persons[person_id]]
 521                     record['PI'].extend(hrns)
 522                 record['geni_urn'] = hrn_to_urn(record['hrn'], 'slice')
 523                 record['geni_creator'] = record['PI']
 524
 525             elif (type == "authority"):
 526                 record['PI'] = []
 527                 record['operator'] = []
 528                 record['owner'] = []
 529                 for pointer in record['person_ids']:
 530                     if pointer not in persons or pointer not in pl_persons:
 531                         # this means there is not sfa or pl record for this user
 532                         continue
 533                     hrns = [person['hrn'] for person in persons[pointer]]
 534                     roles = pl_persons[pointer]['roles']
 535                     if 'pi' in roles:
 536                         record['PI'].extend(hrns)
 537                     if 'tech' in roles:
 538                         record['operator'].extend(hrns)
 539                     if 'admin' in roles:
 540                         record['owner'].extend(hrns)
 541                     # xxx TODO: OrganizationName
 542             elif (type == "node"):
 543                 sfa_info['dns'] = record.get("hostname", "")
 544                 # xxx TODO: URI, LatLong, IP, DNS
 545
 546             elif (type == "user"):
 547                  sfa_info['email'] = record.get("email", "")
 548                  sfa_info['geni_urn'] = hrn_to_urn(record['hrn'], 'user')
 549                  sfa_info['geni_certificate'] = record['gid']
 550                 # xxx TODO: PostalAddress, Phone
 551             record.update(sfa_info)
 552
 553     def fill_record_info(self, records):
 554         """
 555         Given a SFA record, fill in the PLC specific and SFA specific
 556         fields in the record.
 557         """
 558         print >>sys.stderr, "\r\n \t\t fill_record_info %s"%(records)
 559         if not isinstance(records, list):
 560             records = [records]
 561         print >>sys.stderr, "\r\n \t\t BEFORE fill_record_pl_info %s" %(records)
 562         self.fill_record_pl_info(records)
 563         print >>sys.stderr, "\r\n \t\t after fill_record_pl_info %s" %(records)
 564         self.fill_record_sfa_info(records)
 565         print >>sys.stderr, "\r\n \t\t after fill_record_sfa_info"
 566
 567     def update_membership_list(self, oldRecord, record, listName, addFunc, delFunc):
 568         # get a list of the HRNs tht are members of the old and new records
 569         if oldRecord:
 570             oldList = oldRecord.get(listName, [])
 571         else:
 572             oldList = []
 573         newList = record.get(listName, [])
 574
 575         # if the lists are the same, then we don't have to update anything
 576         if (oldList == newList):
 577             return
 578
 579         # build a list of the new person ids, by looking up each person to get
 580         # their pointer
 581         newIdList = []
 582         table = self.SfaTable()
 583         records = table.find({'type': 'user', 'hrn': newList})
 584         for rec in records:
 585             newIdList.append(rec['pointer'])
 586
 587         # build a list of the old person ids from the person_ids field
 588         if oldRecord:
 589             oldIdList = oldRecord.get("person_ids", [])
 590             containerId = oldRecord.get_pointer()
 591         else:
 592             # if oldRecord==None, then we are doing a Register, instead of an
 593             # update.
 594             oldIdList = []
 595             containerId = record.get_pointer()
 596
 597     # add people who are in the new list, but not the oldList
 598         for personId in newIdList:
 599             if not (personId in oldIdList):
 600                 addFunc(self.plauth, personId, containerId)
 601
 602         # remove people who are in the old list, but not the new list
 603         for personId in oldIdList:
 604             if not (personId in newIdList):
 605                 delFunc(self.plauth, personId, containerId)
 606
 607     def update_membership(self, oldRecord, record):
 608         if record.type == "slice":
 609             self.update_membership_list(oldRecord, record, 'researcher',
 610                                         self.plshell.AddPersonToSlice,
 611                                         self.plshell.DeletePersonFromSlice)
 612         elif record.type == "authority":
 613             # xxx TODO
 614             pass
 615
 616
 617
 618 class ComponentAPI(BaseAPI):
 619
 620     def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8", methods='sfa.methods',
 621                  peer_cert = None, interface = None, key_file = None, cert_file = None):
 622
 623         BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, peer_cert=peer_cert,
 624                          interface=interface, key_file=key_file, cert_file=cert_file)
 625         self.encoding = encoding
 626
 627         # Better just be documenting the API
 628         if config is None:
 629             return
 630
 631         self.nodemanager = NodeManager(self.config)
 632
 633     def sliver_exists(self):
 634         sliver_dict = self.nodemanager.GetXIDs()
 635         if slicename in sliver_dict.keys():
 636             return True
 637         else:
 638             return False
 639
 640     def get_registry(self):
 641         addr, port = self.config.SFA_REGISTRY_HOST, self.config.SFA_REGISTRY_PORT
 642         url = "http://%(addr)s:%(port)s" % locals()
 643         server = xmlrpcprotocol.get_server(url, self.key_file, self.cert_file)
 644         return server
 645
 646     def get_node_key(self):
 647         # this call requires no authentication,
 648         # so we can generate a random keypair here
 649         subject="component"
 650         (kfd, keyfile) = tempfile.mkstemp()
 651         (cfd, certfile) = tempfile.mkstemp()
 652         key = Keypair(create=True)
 653         key.save_to_file(keyfile)
 654         cert = Certificate(subject=subject)
 655         cert.set_issuer(key=key, subject=subject)
 656         cert.set_pubkey(key)
 657         cert.sign()
 658         cert.save_to_file(certfile)
 659         registry = self.get_registry()
 660         # the registry will scp the key onto the node
 661         registry.get_key()
 662
 663     def getCredential(self):
 664         """
 665         Get our credential from a remote registry
 666         """
 667         path = self.config.SFA_DATA_DIR
 668         config_dir = self.config.config_path
 669         cred_filename = path + os.sep + 'node.cred'
 670         try:
 671             credential = Credential(filename = cred_filename)
 672             return credential.save_to_string(save_parents=True)
 673         except IOError:
 674             node_pkey_file = config_dir + os.sep + "node.key"
 675             node_gid_file = config_dir + os.sep + "node.gid"
 676             cert_filename = path + os.sep + 'server.cert'
 677             if not os.path.exists(node_pkey_file) or \
 678                not os.path.exists(node_gid_file):
 679                 self.get_node_key()
 680
 681             # get node's hrn
 682             gid = GID(filename=node_gid_file)
 683             hrn = gid.get_hrn()
 684             # get credential from registry
 685             cert_str = Certificate(filename=cert_filename).save_to_string(save_parents=True)
 686             registry = self.get_registry()
 687             cred = registry.GetSelfCredential(cert_str, hrn, 'node')
 688             Credential(string=cred).save_to_file(credfile, save_parents=True)
 689
 690             return cred
 691
 692     def clean_key_cred(self):
 693         """
 694         remove the existing keypair and cred  and generate new ones
 695         """
 696         files = ["server.key", "server.cert", "node.cred"]
 697         for f in files:
 698             filepath = KEYDIR + os.sep + f
 699             if os.path.isfile(filepath):
 700                 os.unlink(f)
 701
 702         # install the new key pair
 703         # GetCredential will take care of generating the new keypair
 704         # and credential
 705         self.get_node_key()
 706         self.getCredential()
 707
 708