sfa/managers/registry_manager_openstack.py

   1 import types
   2 import time
   3 # for get_key_from_incoming_ip
   4 import tempfile
   5 import os
   6 import commands
   7
   8 from sfa.util.faults import RecordNotFound, AccountNotEnabled, PermissionError, MissingAuthority, \
   9     UnknownSfaType, ExistingRecord, NonExistingRecord
  10 from sfa.util.sfatime import utcparse, datetime_to_epoch
  11 from sfa.util.prefixTree import prefixTree
  12 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn, urn_to_hrn
  13 from sfa.util.plxrn import hrn_to_pl_login_base
  14 from sfa.util.version import version_core
  15 from sfa.util.sfalogging import logger
  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 from sfa.storage.record import SfaRecord
  21 from sfa.storage.table import SfaTable
  22 from sfa.managers import registry_manager
  23
  24 class RegistryManager(registry_manager.RegistryManager):
  25
  26     def __init__ (self, config): pass
  27
  28     # The GENI GetVersion call
  29     def GetVersion(self, api, options):
  30         peers = dict ( [ (hrn,interface.get_url()) for (hrn,interface) in api.registries.iteritems()
  31                        if hrn != api.hrn])
  32         xrn=Xrn(api.hrn)
  33         return version_core({'interface':'registry',
  34                              'hrn':xrn.get_hrn(),
  35                              'urn':xrn.get_urn(),
  36                              'peers':peers})
  37
  38     def GetCredential(self, api, xrn, type, is_self=False):
  39         # convert xrn to hrn
  40         if type:
  41             hrn = urn_to_hrn(xrn)[0]
  42         else:
  43             hrn, type = urn_to_hrn(xrn)
  44
  45         # Is this a root or sub authority
  46         auth_hrn = api.auth.get_authority(hrn)
  47         if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
  48             auth_hrn = hrn
  49         # get record info
  50         auth_info = api.auth.get_auth_info(auth_hrn)
  51         table = SfaTable()
  52         records = table.findObjects({'type': type, 'hrn': hrn})
  53         if not records:
  54             raise RecordNotFound(hrn)
  55         record = records[0]
  56
  57         # verify_cancreate_credential requires that the member lists
  58         # (researchers, pis, etc) be filled in
  59         self.driver.augment_records_with_testbed_info (record)
  60         if not self.driver.is_enabled (record):
  61               raise AccountNotEnabled(": PlanetLab account %s is not enabled. Please contact your site PI" %(record['email']))
  62
  63         # get the callers gid
  64         # if this is a self cred the record's gid is the caller's gid
  65         if is_self:
  66             caller_hrn = hrn
  67             caller_gid = record.get_gid_object()
  68         else:
  69             caller_gid = api.auth.client_cred.get_gid_caller()
  70             caller_hrn = caller_gid.get_hrn()
  71
  72         object_hrn = record.get_gid_object().get_hrn()
  73         rights = api.auth.determine_user_rights(caller_hrn, record)
  74         # make sure caller has rights to this object
  75         if rights.is_empty():
  76             raise PermissionError(caller_hrn + " has no rights to " + record['name'])
  77
  78         object_gid = GID(string=record['gid'])
  79         new_cred = Credential(subject = object_gid.get_subject())
  80         new_cred.set_gid_caller(caller_gid)
  81         new_cred.set_gid_object(object_gid)
  82         new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
  83         #new_cred.set_pubkey(object_gid.get_pubkey())
  84         new_cred.set_privileges(rights)
  85         new_cred.get_privileges().delegate_all_privileges(True)
  86         if 'expires' in record:
  87             date = utcparse(record['expires'])
  88             expires = datetime_to_epoch(date)
  89             new_cred.set_expiration(int(expires))
  90         auth_kind = "authority,ma,sa"
  91         # Parent not necessary, verify with certs
  92         #new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
  93         new_cred.encode()
  94         new_cred.sign()
  95
  96         return new_cred.save_to_string(save_parents=True)
  97
  98
  99     def Resolve(self, api, xrns, type=None, full=True):
 100
 101         if not isinstance(xrns, types.ListType):
 102             xrns = [xrns]
 103             # try to infer type if not set and we get a single input
 104             if not type:
 105                 type = Xrn(xrns).get_type()
 106         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
 107         # load all known registry names into a prefix tree and attempt to find
 108         # the longest matching prefix
 109         # create a dict where key is a registry hrn and its value is a
 110         # hrns at that registry (determined by the known prefix tree).
 111         xrn_dict = {}
 112         registries = api.registries
 113         tree = prefixTree()
 114         registry_hrns = registries.keys()
 115         tree.load(registry_hrns)
 116         for xrn in xrns:
 117             registry_hrn = tree.best_match(urn_to_hrn(xrn)[0])
 118             if registry_hrn not in xrn_dict:
 119                 xrn_dict[registry_hrn] = []
 120             xrn_dict[registry_hrn].append(xrn)
 121
 122         records = []
 123         for registry_hrn in xrn_dict:
 124             # skip the hrn without a registry hrn
 125             # XX should we let the user know the authority is unknown?
 126             if not registry_hrn:
 127                 continue
 128
 129             # if the best match (longest matching hrn) is not the local registry,
 130             # forward the request
 131             xrns = xrn_dict[registry_hrn]
 132             if registry_hrn != api.hrn:
 133                 credential = api.getCredential()
 134                 interface = api.registries[registry_hrn]
 135                 server_proxy = api.server_proxy(interface, credential)
 136                 peer_records = server_proxy.Resolve(xrns, credential)
 137                 records.extend([SfaRecord(dict=record).as_dict() for record in peer_records])
 138
 139         # try resolving the remaining unfound records at the local registry
 140         local_hrns = list ( set(hrns).difference([record['hrn'] for record in records]) )
 141         #
 142         table = SfaTable()
 143         local_records = table.findObjects({'hrn': local_hrns})
 144
 145         if full:
 146             # in full mode we get as much info as we can, which involves contacting the
 147             # testbed for getting implementation details about the record
 148             self.driver.augment_records_with_testbed_info(local_records)
 149             # also we fill the 'url' field for known authorities
 150             # used to be in the driver code, sounds like a poorman thing though
 151             def solve_neighbour_url (record):
 152                 if not record['type'].startswith('authority'): return
 153                 hrn=record['hrn']
 154                 for neighbour_dict in [ api.aggregates, api.registries ]:
 155                     if hrn in neighbour_dict:
 156                         record['url']=neighbour_dict[hrn].get_url()
 157                         return
 158             [ solve_neighbour_url (record) for record in local_records ]
 159
 160
 161
 162         # convert local record objects to dicts
 163         records.extend([dict(record) for record in local_records])
 164         if type:
 165             records = filter(lambda rec: rec['type'] in [type], records)
 166
 167         if not records:
 168             raise RecordNotFound(str(hrns))
 169
 170         return records
 171
 172     def List(self, api, xrn, origin_hrn=None):
 173         hrn, type = urn_to_hrn(xrn)
 174         # load all know registry names into a prefix tree and attempt to find
 175         # the longest matching prefix
 176         records = []
 177         registries = api.registries
 178         registry_hrns = registries.keys()
 179         tree = prefixTree()
 180         tree.load(registry_hrns)
 181         registry_hrn = tree.best_match(hrn)
 182
 183         #if there was no match then this record belongs to an unknow registry
 184         if not registry_hrn:
 185             raise MissingAuthority(xrn)
 186         # if the best match (longest matching hrn) is not the local registry,
 187         # forward the request
 188         records = []
 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             record_list = server_proxy.List(xrn, credential)
 194             records = [SfaRecord(dict=record).as_dict() for record in record_list]
 195
 196         # if we still have not found the record yet, try the local registry
 197         if not records:
 198             if not api.auth.hierarchy.auth_exists(hrn):
 199                 raise MissingAuthority(hrn)
 200
 201             table = SfaTable()
 202             records = table.find({'authority': hrn})
 203
 204         return records
 205
 206
 207     def CreateGid(self, api, xrn, cert):
 208         # get the authority
 209         authority = Xrn(xrn=xrn).get_authority_hrn()
 210         auth_info = api.auth.get_auth_info(authority)
 211         if not cert:
 212             pkey = Keypair(create=True)
 213         else:
 214             certificate = Certificate(string=cert)
 215             pkey = certificate.get_pubkey()
 216         gid = api.auth.hierarchy.create_gid(xrn, create_uuid(), pkey)
 217         return gid.save_to_string(save_parents=True)
 218
 219     ####################
 220     # utility for handling relationships among the SFA objects
 221     # given that the SFA db does not handle this sort of relationsships
 222     # it will rely on side-effects in the testbed to keep this persistent
 223
 224     # subject_record describes the subject of the relationships
 225     # ref_record contains the target values for the various relationships we need to manage
 226     # (to begin with, this is just the slice x person relationship)
 227     def update_relations (self, subject_record, ref_record):
 228         type=subject_record['type']
 229         if type=='slice':
 230             self.update_relation(subject_record, 'researcher', ref_record.get('researcher'), 'user')
 231
 232     # field_key is the name of one field in the record, typically 'researcher' for a 'slice' record
 233     # hrns is the list of hrns that should be linked to the subject from now on
 234     # target_type would be e.g. 'user' in the 'slice' x 'researcher' example
 235     def update_relation (self, sfa_record, field_key, hrns, target_type):
 236         # locate the linked objects in our db
 237         subject_type=sfa_record['type']
 238         subject_id=sfa_record['pointer']
 239         table = SfaTable()
 240         link_sfa_records = table.find ({'type':target_type, 'hrn': hrns})
 241         link_ids = [ rec.get('pointer') for rec in link_sfa_records ]
 242         self.driver.update_relation (subject_type, target_type, subject_id, link_ids)
 243
 244
 245     def Register(self, api, record):
 246
 247         hrn, type = record['hrn'], record['type']
 248         urn = hrn_to_urn(hrn,type)
 249         # validate the type
 250         if type not in ['authority', 'slice', 'node', 'user']:
 251             raise UnknownSfaType(type)
 252
 253         # check if record already exists
 254         table = SfaTable()
 255         existing_records = table.find({'type': type, 'hrn': hrn})
 256         if existing_records:
 257             raise ExistingRecord(hrn)
 258
 259         record = SfaRecord(dict = record)
 260         record['authority'] = get_authority(record['hrn'])
 261         auth_info = api.auth.get_auth_info(record['authority'])
 262         pub_key = None
 263         # make sure record has a gid
 264         if 'gid' not in record:
 265             uuid = create_uuid()
 266             pkey = Keypair(create=True)
 267             if 'keys' in record and record['keys']:
 268                 pub_key=record['keys']
 269                 # use only first key in record
 270                 if isinstance(record['keys'], types.ListType):
 271                     pub_key = record['keys'][0]
 272                 pkey = convert_public_key(pub_key)
 273
 274             gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 275             gid = gid_object.save_to_string(save_parents=True)
 276             record['gid'] = gid
 277             record.set_gid(gid)
 278
 279         if type in ["authority"]:
 280             # update the tree
 281             if not api.auth.hierarchy.auth_exists(hrn):
 282                 api.auth.hierarchy.create_auth(hrn_to_urn(hrn,'authority'))
 283
 284             # get the GID from the newly created authority
 285             gid = auth_info.get_gid_object()
 286             record.set_gid(gid.save_to_string(save_parents=True))
 287
 288         # update testbed-specific data if needed
 289         pointer = self.driver.register (record, hrn, pub_key)
 290
 291         record.set_pointer(pointer)
 292         record_id = table.insert(record)
 293         record['record_id'] = record_id
 294
 295         # update membership for researchers, pis, owners, operators
 296         self.update_relations (record, record)
 297
 298         return record.get_gid_object().save_to_string(save_parents=True)
 299
 300     def Update(self, api, record_dict):
 301         new_record = SfaRecord(dict = record_dict)
 302         type = new_record['type']
 303         hrn = new_record['hrn']
 304         urn = hrn_to_urn(hrn,type)
 305         table = SfaTable()
 306         # make sure the record exists
 307         records = table.findObjects({'type': type, 'hrn': hrn})
 308         if not records:
 309             raise RecordNotFound(hrn)
 310         record = records[0]
 311         record['last_updated'] = time.gmtime()
 312
 313         # validate the type
 314         if type not in ['authority', 'slice', 'node', 'user']:
 315             raise UnknownSfaType(type)
 316
 317         # Use the pointer from the existing record, not the one that the user
 318         # gave us. This prevents the user from inserting a forged pointer
 319         pointer = record['pointer']
 320
 321         # is the a change in keys ?
 322         new_key=None
 323         if type=='user':
 324             if 'keys' in new_record and new_record['keys']:
 325                 new_key=new_record['keys']
 326                 if isinstance (new_key,types.ListType):
 327                     new_key=new_key[0]
 328
 329         # update the PLC information that was specified with the record
 330         if not self.driver.update (record, new_record, hrn, new_key):
 331             logger.warning("driver.update failed")
 332
 333         # take new_key into account
 334         if new_key:
 335             # update the openssl key and gid
 336             pkey = convert_public_key(new_key)
 337             uuid = create_uuid()
 338             gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 339             gid = gid_object.save_to_string(save_parents=True)
 340             record['gid'] = gid
 341             record = SfaRecord(dict=record)
 342             table.update(record)
 343
 344         # update membership for researchers, pis, owners, operators
 345         self.update_relations (record, new_record)
 346
 347         return 1
 348
 349     # expecting an Xrn instance
 350     def Remove(self, api, xrn, origin_hrn=None):
 351
 352         table = SfaTable()
 353         filter = {'hrn': xrn.get_hrn()}
 354         hrn=xrn.get_hrn()
 355         type=xrn.get_type()
 356         if type and type not in ['all', '*']:
 357             filter['type'] = type
 358
 359         records = table.find(filter)
 360         if not records: raise RecordNotFound(hrn)
 361         record = records[0]
 362         type = record['type']
 363
 364         if type not in ['slice', 'user', 'node', 'authority'] :
 365             raise UnknownSfaType(type)
 366
 367         credential = api.getCredential()
 368         registries = api.registries
 369
 370         # Try to remove the object from the PLCDB of federated agg.
 371         # This is attempted before removing the object from the local agg's PLCDB and sfa table
 372         if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']:
 373             for registry in registries:
 374                 if registry not in [api.hrn]:
 375                     try:
 376                         result=registries[registry].remove_peer_object(credential, record, origin_hrn)
 377                     except:
 378                         pass
 379
 380         # call testbed callback first
 381         # IIUC this is done on the local testbed TOO because of the refreshpeer link
 382         if not self.driver.remove(record):
 383             logger.warning("driver.remove failed")
 384
 385         # delete from sfa db
 386         table.remove(record)
 387
 388         return 1
 389
 390     # This is a PLC-specific thing...
 391     def get_key_from_incoming_ip (self, api):
 392         # verify that the callers's ip address exist in the db and is an interface
 393         # for a node in the db
 394         (ip, port) = api.remote_addr
 395         interfaces = self.driver.shell.GetInterfaces({'ip': ip}, ['node_id'])
 396         if not interfaces:
 397             raise NonExistingRecord("no such ip %(ip)s" % locals())
 398         nodes = self.driver.shell.GetNodes([interfaces[0]['node_id']], ['node_id', 'hostname'])
 399         if not nodes:
 400             raise NonExistingRecord("no such node using ip %(ip)s" % locals())
 401         node = nodes[0]
 402
 403         # look up the sfa record
 404         table = SfaTable()
 405         records = table.findObjects({'type': 'node', 'pointer': node['node_id']})
 406         if not records:
 407             raise RecordNotFound("pointer:" + str(node['node_id']))
 408         record = records[0]
 409
 410         # generate a new keypair and gid
 411         uuid = create_uuid()
 412         pkey = Keypair(create=True)
 413         urn = hrn_to_urn(record['hrn'], record['type'])
 414         gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 415         gid = gid_object.save_to_string(save_parents=True)
 416         record['gid'] = gid
 417         record.set_gid(gid)
 418
 419         # update the record
 420         table.update(record)
 421
 422         # attempt the scp the key
 423         # and gid onto the node
 424         # this will only work for planetlab based components
 425         (kfd, key_filename) = tempfile.mkstemp()
 426         (gfd, gid_filename) = tempfile.mkstemp()
 427         pkey.save_to_file(key_filename)
 428         gid_object.save_to_file(gid_filename, save_parents=True)
 429         host = node['hostname']
 430         key_dest="/etc/sfa/node.key"
 431         gid_dest="/etc/sfa/node.gid"
 432         scp = "/usr/bin/scp"
 433         #identity = "/etc/planetlab/root_ssh_key.rsa"
 434         identity = "/etc/sfa/root_ssh_key"
 435         scp_options=" -i %(identity)s " % locals()
 436         scp_options+="-o StrictHostKeyChecking=no " % locals()
 437         scp_key_command="%(scp)s %(scp_options)s %(key_filename)s root@%(host)s:%(key_dest)s" %\
 438                          locals()
 439         scp_gid_command="%(scp)s %(scp_options)s %(gid_filename)s root@%(host)s:%(gid_dest)s" %\
 440                          locals()
 441
 442         all_commands = [scp_key_command, scp_gid_command]
 443
 444         for command in all_commands:
 445             (status, output) = commands.getstatusoutput(command)
 446             if status:
 447                 raise Exception, output
 448
 449         for filename in [key_filename, gid_filename]:
 450             os.unlink(filename)
 451
 452         return 1