sfa/managers/registry_manager_openstack.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.plxrn import hrn_to_pl_login_base
  13 from sfa.util.version import version_core
  14 from sfa.util.sfalogging import logger
  15
  16 from sfa.trust.gid import GID
  17 from sfa.trust.credential import Credential
  18 from sfa.trust.certificate import Certificate, Keypair, convert_public_key
  19 from sfa.trust.gid import create_uuid
  20
  21 from sfa.storage.persistentobjs import make_record,RegRecord
  22 from sfa.storage.alchemy import dbsession
  23
  24 from sfa.managers.registry_manager import RegistryManager
  25
  26 class RegistryManager(RegistryManager):
  27
  28     def __init__ (self, config): pass
  29
  30     # The GENI GetVersion call
  31     def GetVersion(self, api, options):
  32         peers = dict ( [ (hrn,interface.get_url()) for (hrn,interface) in api.registries.iteritems()
  33                        if hrn != api.hrn])
  34         xrn=Xrn(api.hrn)
  35         return version_core({'interface':'registry',
  36                              'sfa': 2,
  37                              'geni_api': 2,
  38                              'hrn':xrn.get_hrn(),
  39                              'urn':xrn.get_urn(),
  40                              'peers':peers})
  41
  42     def GetCredential(self, api, xrn, type, is_self=False):
  43         # convert xrn to hrn
  44         if type:
  45             hrn = urn_to_hrn(xrn)[0]
  46         else:
  47             hrn, type = urn_to_hrn(xrn)
  48
  49         # Is this a root or sub authority
  50         auth_hrn = api.auth.get_authority(hrn)
  51         if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
  52             auth_hrn = hrn
  53         auth_info = api.auth.get_auth_info(auth_hrn)
  54         # get record info
  55         record=dbsession.query(RegRecord).filter_by(type=type,hrn=hrn).first()
  56         if not record:
  57             raise RecordNotFound("hrn=%s, type=%s"%(hrn,type))
  58
  59         # verify_cancreate_credential requires that the member lists
  60         # (researchers, pis, etc) be filled in
  61         logger.debug("get credential before augment dict, keys=%s"%record.__dict__.keys())
  62         self.driver.augment_records_with_testbed_info (record.__dict__)
  63         logger.debug("get credential after augment dict, keys=%s"%record.__dict__.keys())
  64         if not self.driver.is_enabled (record.__dict__):
  65               raise AccountNotEnabled(": PlanetLab account %s is not enabled. Please contact your site PI" %(record.email))
  66
  67         # get the callers gid
  68         # if this is a self cred the record's gid is the caller's gid
  69         if is_self:
  70             caller_hrn = hrn
  71             caller_gid = record.get_gid_object()
  72         else:
  73             caller_gid = api.auth.client_cred.get_gid_caller()
  74             caller_hrn = caller_gid.get_hrn()
  75
  76         object_hrn = record.get_gid_object().get_hrn()
  77         rights = api.auth.determine_user_rights(caller_hrn, record.__dict__)
  78         # make sure caller has rights to this object
  79         if rights.is_empty():
  80             raise PermissionError(caller_hrn + " has no rights to " + record.hrn)
  81
  82         object_gid = GID(string=record.gid)
  83         new_cred = Credential(subject = object_gid.get_subject())
  84         new_cred.set_gid_caller(caller_gid)
  85         new_cred.set_gid_object(object_gid)
  86         new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
  87         #new_cred.set_pubkey(object_gid.get_pubkey())
  88         new_cred.set_privileges(rights)
  89         new_cred.get_privileges().delegate_all_privileges(True)
  90         if hasattr(record,'expires'):
  91             date = utcparse(record.expires)
  92             expires = datetime_to_epoch(date)
  93             new_cred.set_expiration(int(expires))
  94         auth_kind = "authority,ma,sa"
  95         # Parent not necessary, verify with certs
  96         #new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
  97         new_cred.encode()
  98         new_cred.sign()
  99
 100         return new_cred.save_to_string(save_parents=True)
 101
 102
 103     def Resolve(self, api, xrns, type=None, full=True):
 104
 105         if not isinstance(xrns, types.ListType):
 106             xrns = [xrns]
 107             # try to infer type if not set and we get a single input
 108             if not type:
 109                 type = Xrn(xrns).get_type()
 110         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
 111
 112         # load all known registry names into a prefix tree and attempt to find
 113         # the longest matching prefix
 114         # create a dict where key is a registry hrn and its value is a list
 115         # of hrns at that registry (determined by the known prefix tree).
 116         xrn_dict = {}
 117         registries = api.registries
 118         tree = prefixTree()
 119         registry_hrns = registries.keys()
 120         tree.load(registry_hrns)
 121         for xrn in xrns:
 122             registry_hrn = tree.best_match(urn_to_hrn(xrn)[0])
 123             if registry_hrn not in xrn_dict:
 124                 xrn_dict[registry_hrn] = []
 125             xrn_dict[registry_hrn].append(xrn)
 126
 127         records = []
 128         for registry_hrn in xrn_dict:
 129             # skip the hrn without a registry hrn
 130             # XX should we let the user know the authority is unknown?
 131             if not registry_hrn:
 132                 continue
 133
 134             # if the best match (longest matching hrn) is not the local registry,
 135             # forward the request
 136             xrns = xrn_dict[registry_hrn]
 137             if registry_hrn != api.hrn:
 138                 credential = api.getCredential()
 139                 interface = api.registries[registry_hrn]
 140                 server_proxy = api.server_proxy(interface, credential)
 141                 peer_records = server_proxy.Resolve(xrns, credential,type)
 142                 # pass foreign records as-is
 143                 # previous code used to read
 144                 # records.extend([SfaRecord(dict=record).as_dict() for record in peer_records])
 145                 # not sure why the records coming through xmlrpc had to be processed at all
 146                 records.extend(peer_records)
 147
 148         # try resolving the remaining unfound records at the local registry
 149         local_hrns = list ( set(hrns).difference([record['hrn'] for record in records]) )
 150         #
 151         local_records = dbsession.query(RegRecord).filter(RegRecord.hrn.in_(local_hrns))
 152         if type:
 153             local_records = local_records.filter_by(type=type)
 154         local_records=local_records.all()
 155         logger.info("Resolve: local_records=%s (type=%s)"%(local_records,type))
 156         local_dicts = [ record.__dict__ for record in local_records ]
 157
 158         if full:
 159             # in full mode we get as much info as we can, which involves contacting the
 160             # testbed for getting implementation details about the record
 161             self.driver.augment_records_with_testbed_info(local_dicts)
 162             # also we fill the 'url' field for known authorities
 163             # used to be in the driver code, sounds like a poorman thing though
 164             def solve_neighbour_url (record):
 165                 if not record.type.startswith('authority'): return
 166                 hrn=record.hrn
 167                 for neighbour_dict in [ api.aggregates, api.registries ]:
 168                     if hrn in neighbour_dict:
 169                         record.url=neighbour_dict[hrn].get_url()
 170                         return
 171             for record in local_records: solve_neighbour_url (record)
 172
 173         # convert local record objects to dicts for xmlrpc
 174         # xxx somehow here calling dict(record) issues a weird error
 175         # however record.todict() seems to work fine
 176         # records.extend( [ dict(record) for record in local_records ] )
 177         records.extend( [ record.todict() for record in local_records ] )
 178         if not records:
 179             raise RecordNotFound(str(hrns))
 180
 181         return records
 182
 183     def List (self, api, xrn, origin_hrn=None):
 184         hrn, type = urn_to_hrn(xrn)
 185         # load all know registry names into a prefix tree and attempt to find
 186         # the longest matching prefix
 187         registries = api.registries
 188         registry_hrns = registries.keys()
 189         tree = prefixTree()
 190         tree.load(registry_hrns)
 191         registry_hrn = tree.best_match(hrn)
 192
 193         #if there was no match then this record belongs to an unknow registry
 194         if not registry_hrn:
 195             raise MissingAuthority(xrn)
 196         # if the best match (longest matching hrn) is not the local registry,
 197         # forward the request
 198         record_dicts = []
 199         if registry_hrn != api.hrn:
 200             credential = api.getCredential()
 201             interface = api.registries[registry_hrn]
 202             server_proxy = api.server_proxy(interface, credential)
 203             record_list = server_proxy.List(xrn, credential)
 204             # same as above, no need to process what comes from through xmlrpc
 205             # pass foreign records as-is
 206             record_dicts = record_list
 207
 208         # if we still have not found the record yet, try the local registry
 209         if not record_dicts:
 210             if not api.auth.hierarchy.auth_exists(hrn):
 211                 raise MissingAuthority(hrn)
 212             records = dbsession.query(RegRecord).filter_by(authority=hrn)
 213             record_dicts=[ record.todict() for record in records ]
 214
 215         return record_dicts
 216
 217
 218     def CreateGid(self, api, xrn, cert):
 219         # get the authority
 220         authority = Xrn(xrn=xrn).get_authority_hrn()
 221         auth_info = api.auth.get_auth_info(authority)
 222         if not cert:
 223             pkey = Keypair(create=True)
 224         else:
 225             certificate = Certificate(string=cert)
 226             pkey = certificate.get_pubkey()
 227         gid = api.auth.hierarchy.create_gid(xrn, create_uuid(), pkey)
 228         return gid.save_to_string(save_parents=True)
 229
 230     ####################
 231     # utility for handling relationships among the SFA objects
 232     # given that the SFA db does not handle this sort of relationsships
 233     # it will rely on side-effects in the testbed to keep this persistent
 234
 235     # subject_record describes the subject of the relationships
 236     # ref_record contains the target values for the various relationships we need to manage
 237     # (to begin with, this is just the slice x person relationship)
 238     def update_relations (self, subject_obj, ref_obj):
 239         type=subject_obj.type
 240         if type=='slice':
 241             self.update_relation(subject_obj, 'researcher', ref_obj.researcher, 'user')
 242
 243     # field_key is the name of one field in the record, typically 'researcher' for a 'slice' record
 244     # hrns is the list of hrns that should be linked to the subject from now on
 245     # target_type would be e.g. 'user' in the 'slice' x 'researcher' example
 246     def update_relation (self, record_obj, field_key, hrns, target_type):
 247         # locate the linked objects in our db
 248         subject_type=record_obj.type
 249         subject_id=record_obj.pointer
 250         # get the 'pointer' field of all matching records
 251         link_id_tuples = dbsession.query(RegRecord.pointer).filter_by(type=target_type).filter(RegRecord.hrn.in_(hrns)).all()
 252         # sqlalchemy returns named tuples for columns
 253         link_ids = [ tuple.pointer for tuple in link_id_tuples ]
 254         self.driver.update_relation (subject_type, target_type, subject_id, link_ids)
 255
 256     def Register(self, api, record_dict):
 257
 258         hrn, type = record_dict['hrn'], record_dict['type']
 259         urn = hrn_to_urn(hrn,type)
 260         # validate the type
 261         if type not in ['authority', 'slice', 'node', 'user']:
 262             raise UnknownSfaType(type)
 263
 264         # check if record_dict already exists
 265         existing_records = dbsession.query(RegRecord).filter_by(type=type,hrn=hrn).all()
 266         if existing_records:
 267             raise ExistingRecord(hrn)
 268
 269         assert ('type' in record_dict)
 270         # returns the right type of RegRecord according to type in record
 271         record = make_record(dict=record_dict)
 272         record.just_created()
 273         record.authority = get_authority(record.hrn)
 274         auth_info = api.auth.get_auth_info(record.authority)
 275         pub_key = None
 276         # make sure record has a gid
 277         if not record.gid:
 278             uuid = create_uuid()
 279             pkey = Keypair(create=True)
 280             if getattr(record,'keys',None):
 281                 pub_key=record.keys
 282                 # use only first key in record
 283                 if isinstance(record.keys, types.ListType):
 284                     pub_key = record.keys[0]
 285                 pkey = convert_public_key(pub_key)
 286
 287             gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 288             gid = gid_object.save_to_string(save_parents=True)
 289             record.gid = gid
 290
 291         if type in ["authority"]:
 292             # update the tree
 293             if not api.auth.hierarchy.auth_exists(hrn):
 294                 api.auth.hierarchy.create_auth(hrn_to_urn(hrn,'authority'))
 295
 296             # get the GID from the newly created authority
 297             gid = auth_info.get_gid_object()
 298             record.gid=gid.save_to_string(save_parents=True)
 299
 300         # update testbed-specific data if needed
 301         pointer = self.driver.register (record.__dict__, hrn, pub_key)
 302
 303         record.pointer=pointer
 304         dbsession.add(record)
 305         dbsession.commit()
 306
 307         # update membership for researchers, pis, owners, operators
 308         self.update_relations (record, record)
 309
 310         return record.get_gid_object().save_to_string(save_parents=True)
 311
 312     def Update(self, api, record_dict):
 313         assert ('type' in record_dict)
 314         new_record=RegRecord(dict=record_dict)
 315         type = new_record.type
 316         hrn = new_record.hrn
 317
 318         # make sure the record exists
 319         record = dbsession.query(RegRecord).filter_by(type=type,hrn=hrn).first()
 320         if not record:
 321             raise RecordNotFound("hrn=%s, type=%s"%(hrn,type))
 322         record.just_updated()
 323
 324         # validate the type
 325         if type not in ['authority', 'slice', 'node', 'user']:
 326             raise UnknownSfaType(type)
 327
 328         # Use the pointer from the existing record, not the one that the user
 329         # gave us. This prevents the user from inserting a forged pointer
 330         pointer = record.pointer
 331
 332         # is the a change in keys ?
 333         new_key=None
 334         if type=='user':
 335             if getattr(new_key,'keys',None):
 336                 new_key=new_record.keys
 337                 if isinstance (new_key,types.ListType):
 338                     new_key=new_key[0]
 339
 340         # update the PLC information that was specified with the record
 341         if not self.driver.update (record.__dict__, new_record.__dict__, hrn, new_key):
 342             logger.warning("driver.update failed")
 343
 344         # take new_key into account
 345         if new_key:
 346             # update the openssl key and gid
 347             pkey = convert_public_key(new_key)
 348             uuid = create_uuid()
 349             urn = hrn_to_urn(hrn,type)
 350             gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 351             gid = gid_object.save_to_string(save_parents=True)
 352             record.gid = gid
 353             dsession.commit()
 354
 355         # update membership for researchers, pis, owners, operators
 356         self.update_relations (record, new_record)
 357
 358         return 1
 359
 360     # expecting an Xrn instance
 361     def Remove(self, api, xrn, origin_hrn=None):
 362         hrn=xrn.get_hrn()
 363         type=xrn.get_type()
 364         request=dbsession.query(RegRecord).filter_by(hrn=hrn)
 365         if type and type not in ['all', '*']:
 366             request=request.filter_by(type=type)
 367
 368         record = request.first()
 369         if not record:
 370             msg="Could not find hrn %s"%hrn
 371             if type: msg += " type=%s"%type
 372             raise RecordNotFound(msg)
 373
 374         type = record.type
 375         if type not in ['slice', 'user', 'node', 'authority'] :
 376             raise UnknownSfaType(type)
 377
 378         credential = api.getCredential()
 379         registries = api.registries
 380
 381         # Try to remove the object from the PLCDB of federated agg.
 382         # This is attempted before removing the object from the local agg's PLCDB and sfa table
 383         if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']:
 384             for registry in registries:
 385                 if registry not in [api.hrn]:
 386                     try:
 387                         result=registries[registry].remove_peer_object(credential, record, origin_hrn)
 388                     except:
 389                         pass
 390
 391         # call testbed callback first
 392         # IIUC this is done on the local testbed TOO because of the refreshpeer link
 393         if not self.driver.remove(record.__dict__):
 394             logger.warning("driver.remove failed")
 395
 396         # delete from sfa db
 397         dbsession.delete(record)
 398         dbsession.commit()
 399
 400         return 1
 401
 402     # This is a PLC-specific thing, won't work with other platforms
 403     def get_key_from_incoming_ip (self, api):
 404         # verify that the callers's ip address exist in the db and is an interface
 405         # for a node in the db
 406         (ip, port) = api.remote_addr
 407         interfaces = self.driver.shell.GetInterfaces({'ip': ip}, ['node_id'])
 408         if not interfaces:
 409             raise NonExistingRecord("no such ip %(ip)s" % locals())
 410         nodes = self.driver.shell.GetNodes([interfaces[0]['node_id']], ['node_id', 'hostname'])
 411         if not nodes:
 412             raise NonExistingRecord("no such node using ip %(ip)s" % locals())
 413         node = nodes[0]
 414
 415         # look up the sfa record
 416         record=dbsession.query(RegRecord).filter_by(type='node',pointer=node['node_id']).first()
 417         if not record:
 418             raise RecordNotFound("node with pointer %s"%node['node_id'])
 419
 420         # generate a new keypair and gid
 421         uuid = create_uuid()
 422         pkey = Keypair(create=True)
 423         urn = hrn_to_urn(record.hrn, record.type)
 424         gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 425         gid = gid_object.save_to_string(save_parents=True)
 426         record.gid = gid
 427
 428         # update the record
 429         dbsession.commit()
 430
 431         # attempt the scp the key
 432         # and gid onto the node
 433         # this will only work for planetlab based components
 434         (kfd, key_filename) = tempfile.mkstemp()
 435         (gfd, gid_filename) = tempfile.mkstemp()
 436         pkey.save_to_file(key_filename)
 437         gid_object.save_to_file(gid_filename, save_parents=True)
 438         host = node['hostname']
 439         key_dest="/etc/sfa/node.key"
 440         gid_dest="/etc/sfa/node.gid"
 441         scp = "/usr/bin/scp"
 442         #identity = "/etc/planetlab/root_ssh_key.rsa"
 443         identity = "/etc/sfa/root_ssh_key"
 444         scp_options=" -i %(identity)s " % locals()
 445         scp_options+="-o StrictHostKeyChecking=no " % locals()
 446         scp_key_command="%(scp)s %(scp_options)s %(key_filename)s root@%(host)s:%(key_dest)s" %\
 447                          locals()
 448         scp_gid_command="%(scp)s %(scp_options)s %(gid_filename)s root@%(host)s:%(gid_dest)s" %\
 449                          locals()
 450
 451         all_commands = [scp_key_command, scp_gid_command]
 452
 453         for command in all_commands:
 454             (status, output) = commands.getstatusoutput(command)
 455             if status:
 456                 raise Exception, output
 457
 458         for filename in [key_filename, gid_filename]:
 459             os.unlink(filename)
 460
 461         return 1