sfa/managers/registry_manager.py

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