sfa/managers/registry_manager.py

   1 # pylint: disable=c0111, w1202
   2
   3 from __future__ import print_function
   4
   5 # for get_key_from_incoming_ip
   6 import tempfile
   7 import os
   8 import commands
   9
  10 from sfa.util.faults import (
  11     RecordNotFound, AccountNotEnabled, PermissionError, MissingAuthority,
  12     UnknownSfaType, ExistingRecord, NonExistingRecord)
  13 from sfa.util.sfatime import utcparse, datetime_to_epoch
  14 from sfa.util.prefixTree import prefixTree
  15 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn, urn_to_hrn
  16 from sfa.util.version import version_core
  17 from sfa.util.sfalogging import logger
  18
  19 from sfa.util.printable import printable
  20
  21 from sfa.trust.gid import GID
  22 from sfa.trust.credential import Credential
  23 from sfa.trust.certificate import Certificate, Keypair, convert_public_key
  24 from sfa.trust.gid import create_uuid
  25
  26 from sfa.storage.model import (
  27     make_record, RegRecord, RegAuthority, RegUser, RegSlice, RegKey,
  28     augment_with_sfa_builtins)
  29 # the types that we need to exclude from sqlobjects before being able to dump
  30 # them on the xmlrpc wire
  31 from sqlalchemy.orm.collections import InstrumentedList
  32
  33 # historical note -- april 2014
  34 # the myslice chaps rightfully complained about the following discrepancy
  35 # they found that
  36 # * read operations (resolve) expose stuff like e.g.
  37 #   'reg-researchers', or 'reg-pis', but that
  38 # * write operations (register, update) need e.g.
  39 #   'researcher' or 'pi' to be set - reg-* are just ignored
  40 #
  41 # the '_normalize_input' helper functions below aim at ironing this out
  42 # however in order to break as few code as possible we essentially
  43 # make sure that *both* fields are set upon entering the write methods
  44 # (again: register and update) for legacy, as some driver code
  45 # might depend on the presence of, say, 'researcher'
  46
  47 # normalize an input record to a write method - register or update
  48 # e.g. registry calls this 'reg-researchers'
  49 # while some drivers call this 'researcher'
  50 # we need to make sure that both keys appear and are the same
  51
  52
  53 def _normalize_input(record, reg_key, driver_key):
  54     # this looks right, use this for both keys
  55     if reg_key in record:
  56         # and issue a warning if they were both set and different
  57         # as we're overwriting some user data here
  58         if driver_key in record:
  59             logger.warning("normalize_input: incoming record has both values, using {}"
  60                            .format(reg_key))
  61         record[driver_key] = record[reg_key]
  62     # we only have one key set, duplicate for the other one
  63     elif driver_key in record:
  64         logger.warning("normalize_input: you should use '{}' instead of '{}'"
  65                        .format(reg_key, driver_key))
  66         record[reg_key] = record[driver_key]
  67
  68
  69 def normalize_input_record(record):
  70     _normalize_input(record, 'reg-researchers', 'researcher')
  71     _normalize_input(record, 'reg-pis', 'pi')
  72     _normalize_input(record, 'reg-keys', 'keys')
  73     # xxx the keys thing could use a little bit more attention:
  74     # some parts of the code are using 'keys' while they should use 'reg-keys'
  75     # but I run out of time for now
  76     if 'reg-keys' in record:
  77         record['keys'] = record['reg-keys']
  78     return record
  79
  80
  81 class RegistryManager:
  82
  83     def __init__(self, config):
  84         logger.debug("Creating RegistryManager[{}]".format(id(self)))
  85
  86     # The GENI GetVersion call
  87     def GetVersion(self, api, options):
  88         peers = {hrn: interface.get_url()
  89                  for (hrn, interface) in api.registries.iteritems()
  90                  if hrn != api.hrn}
  91         xrn = Xrn(api.hrn, type='authority')
  92         return version_core({'interface': 'registry',
  93                              'sfa': 3,
  94                              'hrn': xrn.get_hrn(),
  95                              'urn': xrn.get_urn(),
  96                              'peers': peers})
  97
  98     def GetCredential(self, api, xrn, input_type, caller_xrn=None):
  99         # convert xrn to hrn
 100         if input_type:
 101             hrn, _ = urn_to_hrn(xrn)
 102             type = input_type
 103         else:
 104             hrn, type = urn_to_hrn(xrn)
 105
 106         # Slivers don't have credentials but users should be able to
 107         # specify a sliver xrn and receive the slice's credential
 108         # However if input_type is specified
 109         if type == 'sliver' or (not input_type and '-' in Xrn(hrn).leaf):
 110             slice_xrn = api.driver.sliver_to_slice_xrn(hrn)
 111             hrn = slice_xrn.hrn
 112
 113         # Is this a root or sub authority
 114         auth_hrn = api.auth.get_authority(hrn)
 115         if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
 116             auth_hrn = hrn
 117         auth_info = api.auth.get_auth_info(auth_hrn)
 118
 119         # get record info
 120         dbsession = api.dbsession()
 121         record = dbsession.query(RegRecord).filter_by(
 122             type=type, hrn=hrn).first()
 123         if not record:
 124             raise RecordNotFound("hrn={}, type={}".format(hrn, type))
 125
 126         # get the callers gid
 127         # if caller_xrn is not specified assume the caller is the record
 128         # object itself.
 129         if not caller_xrn:
 130             caller_hrn = hrn
 131             caller_gid = record.get_gid_object()
 132         else:
 133             caller_hrn, caller_type = urn_to_hrn(caller_xrn)
 134             if caller_type:
 135                 caller_record = dbsession.query(RegRecord).filter_by(
 136                     hrn=caller_hrn, type=caller_type).first()
 137             else:
 138                 caller_record = dbsession.query(
 139                     RegRecord).filter_by(hrn=caller_hrn).first()
 140             if not caller_record:
 141                 raise RecordNotFound(
 142                     "Unable to associated caller (hrn={}, type={}) "
 143                     "with credential for (hrn: {}, type: {})"
 144                     .format(caller_hrn, caller_type, hrn, type))
 145             caller_gid = GID(string=caller_record.gid)
 146
 147         object_hrn = record.get_gid_object().get_hrn()
 148         # call the builtin authorization/credential generation engine
 149         rights = api.auth.determine_user_rights(caller_hrn, record)
 150         # make sure caller has rights to this object
 151         if rights.is_empty():
 152             raise PermissionError("{} has no rights to {} ({})"
 153                                   .format(caller_hrn, object_hrn, xrn))
 154         object_gid = GID(string=record.gid)
 155         new_cred = Credential(subject=object_gid.get_subject())
 156         new_cred.set_gid_caller(caller_gid)
 157         new_cred.set_gid_object(object_gid)
 158         new_cred.set_issuer_keys(
 159             auth_info.get_privkey_filename(), auth_info.get_gid_filename())
 160         # new_cred.set_pubkey(object_gid.get_pubkey())
 161         new_cred.set_privileges(rights)
 162         new_cred.get_privileges().delegate_all_privileges(True)
 163         if hasattr(record, 'expires'):
 164             date = utcparse(record.expires)
 165             expires = datetime_to_epoch(date)
 166             new_cred.set_expiration(int(expires))
 167         auth_kind = "authority,ma,sa"
 168         # Parent not necessary, verify with certs
 169         # new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
 170         new_cred.encode()
 171         new_cred.sign()
 172
 173         return new_cred.save_to_string(save_parents=True)
 174
 175     # the default for full, which means 'dig into the testbed as well', should
 176     # be false
 177     def Resolve(self, api, xrns, type=None, details=False):
 178
 179         dbsession = api.dbsession()
 180         if not isinstance(xrns, list):
 181             # try to infer type if not set and we get a single input
 182             if not type:
 183                 type = Xrn(xrns).get_type()
 184             xrns = [xrns]
 185         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
 186
 187         # load all known registry names into a prefix tree and attempt to find
 188         # the longest matching prefix
 189         # create a dict where key is a registry hrn and its value is a list
 190         # of hrns at that registry (determined by the known prefix tree).
 191         xrn_dict = {}
 192         registries = api.registries
 193         tree = prefixTree()
 194         registry_hrns = registries.keys()
 195         tree.load(registry_hrns)
 196         for xrn in xrns:
 197             registry_hrn = tree.best_match(urn_to_hrn(xrn)[0])
 198             if registry_hrn not in xrn_dict:
 199                 xrn_dict[registry_hrn] = []
 200             xrn_dict[registry_hrn].append(xrn)
 201
 202         records = []
 203         for registry_hrn in xrn_dict:
 204             # skip the hrn without a registry hrn
 205             # XX should we let the user know the authority is unknown?
 206             if not registry_hrn:
 207                 continue
 208
 209             # if the best match (longest matching hrn) is not the local registry,
 210             # forward the request
 211             xrns = xrn_dict[registry_hrn]
 212             if registry_hrn != api.hrn:
 213                 credential = api.getCredential()
 214                 interface = api.registries[registry_hrn]
 215                 server_proxy = api.server_proxy(interface, credential)
 216                 # should propagate the details flag but that's not supported
 217                 # in the xmlrpc interface yet
 218                 # peer_records = server_proxy.Resolve(xrns, credential,type, details=details)
 219                 peer_records = server_proxy.Resolve(xrns, credential)
 220                 # pass foreign records as-is
 221                 # previous code used to read
 222                 # records.extend([SfaRecord(dict=record).as_dict() for record in peer_records])
 223                 # not sure why the records coming through xmlrpc had to be
 224                 # processed at all
 225                 records.extend(peer_records)
 226
 227         # try resolving the remaining unfound records at the local registry
 228         local_hrns = list(set(hrns).difference(
 229             [record['hrn'] for record in records]))
 230         #
 231         local_records = dbsession.query(RegRecord).filter(
 232             RegRecord.hrn.in_(local_hrns))
 233         if type:
 234             local_records = local_records.filter_by(type=type)
 235         local_records = local_records.all()
 236
 237         for local_record in local_records:
 238             augment_with_sfa_builtins(local_record)
 239
 240         logger.info("Resolve, (details={}, type={}) local_records={} "
 241                     .format(details, type, local_records))
 242         local_dicts = [record.__dict__ for record in local_records]
 243
 244         if details:
 245             # in details mode we get as much info as we can, which involves contacting the
 246             # testbed for getting implementation details about the record
 247             api.driver.augment_records_with_testbed_info(local_dicts)
 248             # also we fill the 'url' field for known authorities
 249             # used to be in the driver code, sounds like a poorman thing though
 250
 251             def solve_neighbour_url(record):
 252                 if not record.type.startswith('authority'):
 253                     return
 254                 hrn = record.hrn
 255                 for neighbour_dict in [api.aggregates, api.registries]:
 256                     if hrn in neighbour_dict:
 257                         record.url = neighbour_dict[hrn].get_url()
 258                         return
 259             for record in local_records:
 260                 solve_neighbour_url(record)
 261
 262         # convert local record objects to dicts for xmlrpc
 263         # xxx somehow here calling dict(record) issues a weird error
 264         # however record.todict() seems to work fine
 265         # records.extend( [ dict(record) for record in local_records ] )
 266         records.extend([record.record_to_dict(exclude_types=(
 267             InstrumentedList,)) for record in local_records])
 268
 269         if not records:
 270             raise RecordNotFound(str(hrns))
 271
 272         return records
 273
 274     def List(self, api, xrn, origin_hrn=None, options=None):
 275         if options is None:
 276             options = {}
 277         dbsession = api.dbsession()
 278         # load all know registry names into a prefix tree and attempt to find
 279         # the longest matching prefix
 280         hrn, type = urn_to_hrn(xrn)
 281         registries = api.registries
 282         registry_hrns = registries.keys()
 283         tree = prefixTree()
 284         tree.load(registry_hrns)
 285         registry_hrn = tree.best_match(hrn)
 286
 287         # if there was no match then this record belongs to an unknow registry
 288         if not registry_hrn:
 289             raise MissingAuthority(xrn)
 290         # if the best match (longest matching hrn) is not the local registry,
 291         # forward the request
 292         record_dicts = []
 293         if registry_hrn != api.hrn:
 294             credential = api.getCredential()
 295             interface = api.registries[registry_hrn]
 296             server_proxy = api.server_proxy(interface, credential)
 297             record_list = server_proxy.List(xrn, credential, options)
 298             # same as above, no need to process what comes from through xmlrpc
 299             # pass foreign records as-is
 300             record_dicts = record_list
 301
 302         # if we still have not found the record yet, try the local registry
 303         # logger.debug("before trying local records, {} foreign records"
 304         #              .format(len(record_dicts)))
 305         if not record_dicts:
 306             recursive = False
 307             if ('recursive' in options and options['recursive']):
 308                 recursive = True
 309             elif hrn.endswith('*'):
 310                 hrn = hrn[:-1]
 311                 recursive = True
 312
 313             if not api.auth.hierarchy.auth_exists(hrn):
 314                 raise MissingAuthority(hrn)
 315             if recursive:
 316                 records = dbsession.query(RegRecord).filter(
 317                     RegRecord.hrn.startswith(hrn)).all()
 318                     # logger.debug("recursive mode, found {} local records".
 319                     #              format(len(records)))
 320             else:
 321                 records = dbsession.query(
 322                     RegRecord).filter_by(authority=hrn).all()
 323                     # logger.debug("non recursive mode, found {} local records"
 324                     #              .format(len(records)))
 325             # so that sfi list can show more than plain names...
 326             for record in records:
 327                 # xxx mystery - see also the bottom of model.py
 328                 # resulting records have been observed to not always have
 329                 # their __dict__ actually in line with the object's contents;
 330                 # was first observed with authorities' 'name' column
 331                 # that would be missing from result as received by client
 332                 augment_with_sfa_builtins(record)
 333             record_dicts = [record.record_to_dict(
 334                 exclude_types=(InstrumentedList,)) for record in records]
 335
 336         return record_dicts
 337
 338     def CreateGid(self, api, xrn, cert):
 339         # get the authority
 340         authority = Xrn(xrn=xrn).get_authority_hrn()
 341         auth_info = api.auth.get_auth_info(authority)
 342         if not cert:
 343             pkey = Keypair(create=True)
 344         else:
 345             certificate = Certificate(string=cert)
 346             pkey = certificate.get_pubkey()
 347
 348         # Add the email of the user to SubjectAltName in the GID
 349         email = None
 350         hrn = Xrn(xrn).get_hrn()
 351         dbsession = api.dbsession()
 352         record = dbsession.query(RegUser).filter_by(hrn=hrn).first()
 353         if record:
 354             email = getattr(record, 'email', None)
 355         gid = api.auth.hierarchy.create_gid(
 356             xrn, create_uuid(), pkey, email=email)
 357         return gid.save_to_string(save_parents=True)
 358
 359     ####################
 360     # utility for handling relationships among the SFA objects
 361
 362     # subject_record describes the subject of the relationships
 363     # ref_record contains the target values for the various relationships
 364     # we need to manage (to begin with, this is just the
 365     # slice x person (researcher) and authority x person (pi) relationships)
 366     def update_driver_relations(self, api, subject_obj, ref_obj):
 367         type = subject_obj.type
 368         # for (k,v) in subject_obj.__dict__.items(): print k,'=',v
 369         if type == 'slice' and hasattr(ref_obj, 'researcher'):
 370             self.update_driver_relation(
 371                 api, subject_obj, ref_obj.researcher, 'user', 'researcher')
 372         elif type == 'authority' and hasattr(ref_obj, 'pi'):
 373             self.update_driver_relation(
 374                 api, subject_obj, ref_obj.pi, 'user', 'pi')
 375
 376     # field_key is the name of one field in the record,
 377     # typically 'researcher' for a 'slice' record
 378     # hrns is the list of hrns that should be linked to the subject from now on
 379     # target_type would be e.g. 'user' in the 'slice' x 'researcher' example
 380     def update_driver_relation(self, api, record_obj, hrns,
 381                                target_type, relation_name):
 382         dbsession = api.dbsession()
 383         # locate the linked objects in our db
 384         subject_type = record_obj.type
 385         subject_id = record_obj.pointer
 386         # get the 'pointer' field of all matching records
 387         link_id_tuples = dbsession.query(RegRecord.pointer).filter_by(
 388             type=target_type).filter(RegRecord.hrn.in_(hrns)).all()
 389         # sqlalchemy returns named tuples for columns
 390         link_ids = [tuple.pointer for tuple in link_id_tuples]
 391         api.driver.update_relation(
 392             subject_type, target_type, relation_name, subject_id, link_ids)
 393
 394     def Register(self, api, record_dict):
 395
 396         logger.debug("Register: entering with record_dict={}".format(
 397             printable(record_dict)))
 398         normalize_input_record(record_dict)
 399         logger.debug("Register: normalized record_dict={}".format(
 400             printable(record_dict)))
 401
 402         dbsession = api.dbsession()
 403         hrn, type = record_dict['hrn'], record_dict['type']
 404         urn = hrn_to_urn(hrn, type)
 405         # validate the type
 406         if type not in ['authority', 'slice', 'node', 'user']:
 407             raise UnknownSfaType(type)
 408
 409         # check if record_dict already exists
 410         existing_records = dbsession.query(
 411             RegRecord).filter_by(type=type, hrn=hrn).all()
 412         if existing_records:
 413             raise ExistingRecord(hrn)
 414
 415         assert ('type' in record_dict)
 416         # returns the right type of RegRecord according to type in record
 417         record = make_record(dict=record_dict)
 418         record.just_created()
 419         record.authority = get_authority(record.hrn)
 420         auth_info = api.auth.get_auth_info(record.authority)
 421         pub_key = None
 422         # make sure record has a gid
 423         if not record.gid:
 424             uuid = create_uuid()
 425             pkey = Keypair(create=True)
 426             pub_key = getattr(record, 'reg-keys', None)
 427             if pub_key is not None:
 428                 # use only first key in record
 429                 if pub_key and isinstance(pub_key, list):
 430                     pub_key = pub_key[0]
 431                 pkey = convert_public_key(pub_key)
 432
 433             email = getattr(record, 'email', None)
 434             gid_object = api.auth.hierarchy.create_gid(
 435                 urn, uuid, pkey, email=email)
 436             gid = gid_object.save_to_string(save_parents=True)
 437             record.gid = gid
 438
 439         if isinstance(record, RegAuthority):
 440             # update the tree
 441             if not api.auth.hierarchy.auth_exists(hrn):
 442                 api.auth.hierarchy.create_auth(hrn_to_urn(hrn, 'authority'))
 443
 444             # get the GID from the newly created authority
 445             auth_info = api.auth.get_auth_info(hrn)
 446             gid = auth_info.get_gid_object()
 447             record.gid = gid.save_to_string(save_parents=True)
 448
 449             # locate objects for relationships
 450             pi_hrns = getattr(record, 'reg-pis', None)
 451             if pi_hrns is not None:
 452                 record.update_pis(pi_hrns, dbsession)
 453
 454         elif isinstance(record, RegSlice):
 455             researcher_hrns = getattr(record, 'reg-researchers', None)
 456             if researcher_hrns is not None:
 457                 record.update_researchers(researcher_hrns, dbsession)
 458
 459         elif isinstance(record, RegUser):
 460             # create RegKey objects for incoming keys
 461             if hasattr(record, 'reg-keys'):
 462                 keys = getattr(record, 'reg-keys')
 463                 # some people send the key as a string instead of a list of strings
 464                 # note for python2/3 : no need to consider unicode in a key
 465                 if isinstance(keys, str):
 466                     keys = [keys]
 467                 logger.debug("creating {} keys for user {}".format(
 468                     len(keys), record.hrn))
 469                 record.reg_keys = [RegKey(key) for key in keys]
 470
 471         # update testbed-specific data if needed
 472         pointer = api.driver.register(record.__dict__, hrn, pub_key)
 473
 474         record.pointer = pointer
 475         dbsession.add(record)
 476         dbsession.commit()
 477
 478         # update membership for researchers, pis, owners, operators
 479         self.update_driver_relations(api, record, record)
 480
 481         return record.get_gid_object().save_to_string(save_parents=True)
 482
 483     def Update(self, api, record_dict):
 484
 485         logger.debug("Update: entering with record_dict={}".format(
 486             printable(record_dict)))
 487         normalize_input_record(record_dict)
 488         logger.debug("Update: normalized record_dict={}".format(
 489             printable(record_dict)))
 490
 491         dbsession = api.dbsession()
 492         assert ('type' in record_dict)
 493         new_record = make_record(dict=record_dict)
 494         (type, hrn) = (new_record.type, new_record.hrn)
 495
 496         # make sure the record exists
 497         record = dbsession.query(RegRecord).filter_by(
 498             type=type, hrn=hrn).first()
 499         if not record:
 500             raise RecordNotFound("hrn={}, type={}".format(hrn, type))
 501         record.just_updated()
 502
 503         # Use the pointer from the existing record, not the one that the user
 504         # gave us. This prevents the user from inserting a forged pointer
 505         pointer = record.pointer
 506
 507         # is there a change in keys ?
 508         new_key = None
 509         if type == 'user':
 510             if getattr(new_record, 'keys', None):
 511                 new_key = new_record.keys
 512                 if isinstance(new_key, list):
 513                     new_key = new_key[0]
 514
 515         # take new_key into account
 516         if new_key:
 517             # update the openssl key and gid
 518             pkey = convert_public_key(new_key)
 519             uuid = create_uuid()
 520             urn = hrn_to_urn(hrn, type)
 521
 522             email = getattr(new_record, 'email', None)
 523             if email is None:
 524                 email = getattr(record, 'email', None)
 525             gid_object = api.auth.hierarchy.create_gid(
 526                 urn, uuid, pkey, email=email)
 527             gid = gid_object.save_to_string(save_parents=True)
 528
 529         # xxx should do side effects from new_record to record
 530         # not too sure how to do that
 531         # not too big a deal with planetlab as the driver is authoritative,
 532         # but...
 533
 534         # update native relations
 535         if isinstance(record, RegSlice):
 536             researcher_hrns = getattr(new_record, 'reg-researchers', None)
 537             if researcher_hrns is not None:
 538                 record.update_researchers(researcher_hrns, dbsession)
 539
 540         elif isinstance(record, RegAuthority):
 541             pi_hrns = getattr(new_record, 'reg-pis', None)
 542             if pi_hrns is not None:
 543                 record.update_pis(pi_hrns, dbsession)
 544             name = getattr(new_record, 'name', None)
 545             if name is not None:
 546                 record.name = name
 547
 548         elif isinstance(record, RegUser):
 549             email = getattr(new_record, 'email', None)
 550             if email is not None:
 551                 record.email = email
 552
 553         # update the PLC information that was specified with the record
 554         # xxx mystery -- see also the bottom of model.py,
 555         # oddly enough, without this useless statement,
 556         # record.__dict__ as received by the driver seems to be off
 557         # anyway the driver should receive an object
 558         # (and then extract __dict__ itself if needed)
 559         print("DO NOT REMOVE ME before driver.update, record={}".format(record))
 560         # as of June 2015: I suspect we could remove that print line above and replace it with
 561         # augment_with_sfa_builtins(record)
 562         # instead, that checks for these fields, like it is done above in List()
 563         # but that would need to be confirmed by more extensive tests
 564         new_key_pointer = -1
 565         try:
 566             (pointer, new_key_pointer) = api.driver.update(
 567                 record.__dict__, new_record.__dict__, hrn, new_key)
 568         except:
 569             pass
 570         if new_key and new_key_pointer:
 571             record.reg_keys = [RegKey(new_key, new_key_pointer)]
 572             record.gid = gid
 573
 574         dbsession.commit()
 575         # update membership for researchers, pis, owners, operators
 576         self.update_driver_relations(api, record, new_record)
 577
 578         return 1
 579
 580     # expecting an Xrn instance
 581     def Remove(self, api, xrn, origin_hrn=None):
 582         dbsession = api.dbsession()
 583         hrn = xrn.get_hrn()
 584         type = xrn.get_type()
 585         request = dbsession.query(RegRecord).filter_by(hrn=hrn)
 586         if type and type not in ['all', '*']:
 587             request = request.filter_by(type=type)
 588
 589         record = request.first()
 590         if not record:
 591             msg = "Could not find hrn {}".format(hrn)
 592             if type:
 593                 msg += " type={}".format(type)
 594             raise RecordNotFound(msg)
 595
 596         type = record.type
 597         if type not in ['slice', 'user', 'node', 'authority']:
 598             raise UnknownSfaType(type)
 599
 600         registries = api.registries
 601
 602         # Try to remove the object from the PLCDB of federated agg.
 603         # This is attempted before removing the object from the local agg's
 604         # PLCDB and sfa table
 605         if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']:
 606             for registry in registries:
 607                 if registry not in [api.hrn]:
 608                     try:
 609                         credential = api.getCredential()
 610                         result = registries[registry].remove_peer_object(
 611                             credential, record, origin_hrn)
 612                     except:
 613                         pass
 614
 615         # call testbed callback first
 616         # IIUC this is done on the local testbed TOO because of the refreshpeer
 617         # link
 618         if not api.driver.remove(record.__dict__):
 619             logger.warning("driver.remove failed")
 620
 621         # delete from sfa db
 622         dbsession.delete(record)
 623         dbsession.commit()
 624
 625         return 1
 626
 627     # This is a PLC-specific thing, won't work with other platforms
 628     def get_key_from_incoming_ip(self, api):
 629         dbsession = api.dbsession()
 630         # verify that the callers's ip address exist in the db and is an interface
 631         # for a node in the db
 632         (ip, port) = api.remote_addr
 633         interfaces = api.driver.shell.GetInterfaces({'ip': ip}, ['node_id'])
 634         if not interfaces:
 635             raise NonExistingRecord("no such ip {}".format(ip))
 636         nodes = api.driver.shell.GetNodes(
 637             [interfaces[0]['node_id']], ['node_id', 'hostname'])
 638         if not nodes:
 639             raise NonExistingRecord("no such node using ip {}".format(ip))
 640         node = nodes[0]
 641
 642         # look up the sfa record
 643         record = dbsession.query(RegRecord).filter_by(
 644             type='node', pointer=node['node_id']).first()
 645         if not record:
 646             raise RecordNotFound(
 647                 "node with pointer {}".format(node['node_id']))
 648
 649         # generate a new keypair and gid
 650         uuid = create_uuid()
 651         pkey = Keypair(create=True)
 652         urn = hrn_to_urn(record.hrn, record.type)
 653
 654         email = getattr(record, 'email', None)
 655         gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey, email)
 656         gid = gid_object.save_to_string(save_parents=True)
 657         record.gid = gid
 658
 659         # update the record
 660         dbsession.commit()
 661
 662         # attempt the scp the key
 663         # and gid onto the node
 664         # this will only work for planetlab based components
 665         (kfd, key_filename) = tempfile.mkstemp()
 666         (gfd, gid_filename) = tempfile.mkstemp()
 667         pkey.save_to_file(key_filename)
 668         gid_object.save_to_file(gid_filename, save_parents=True)
 669         host = node['hostname']
 670         key_dest = "/etc/sfa/node.key"
 671         gid_dest = "/etc/sfa/node.gid"
 672         scp = "/usr/bin/scp"
 673         #identity = "/etc/planetlab/root_ssh_key.rsa"
 674         identity = "/etc/sfa/root_ssh_key"
 675         scp_options = " -i {identity} ".format(**locals())
 676         scp_options += "-o StrictHostKeyChecking=no "
 677         scp_key_command = "{scp} {scp_options} {key_filename} root@{host}:{key_dest}"\
 678             .format(**locals())
 679         scp_gid_command = "{scp} {scp_options} {gid_filename} root@{host}:{gid_dest}"\
 680                           .format(**locals())
 681
 682         all_commands = [scp_key_command, scp_gid_command]
 683
 684         for command in all_commands:
 685             (status, output) = commands.getstatusoutput(command)
 686             if status:
 687                 raise Exception(output)
 688
 689         for filename in [key_filename, gid_filename]:
 690             os.unlink(filename)
 691
 692         return 1