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