sfa/managers/registry_manager.py

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