sfa/managers/registry_manager.py

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