sfa/managers/registry_manager.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.prefixTree import prefixTree
  11 from sfa.util.record import SfaRecord
  12 from sfa.util.table import SfaTable
  13 from sfa.util.xrn import Xrn, get_authority, hrn_to_urn, urn_to_hrn
  14 from sfa.util.plxrn import hrn_to_pl_login_base
  15 from sfa.util.version import version_core
  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 class RegistryManager:
  23
  24     def __init__ (self): pass
  25
  26     # The GENI GetVersion call
  27     def GetVersion(self, api):
  28         peers = dict ( [ (hrn,interface._ServerProxy__host) for (hrn,interface) in api.registries.iteritems()
  29                        if hrn != api.hrn])
  30         xrn=Xrn(api.hrn)
  31         return version_core({'interface':'registry',
  32                              'hrn':xrn.get_hrn(),
  33                              'urn':xrn.get_urn(),
  34                              'peers':peers})
  35
  36     def GetCredential(self, api, xrn, type, is_self=False):
  37         # convert xrn to hrn
  38         if type:
  39             hrn = urn_to_hrn(xrn)[0]
  40         else:
  41             hrn, type = urn_to_hrn(xrn)
  42
  43         # Is this a root or sub authority
  44         auth_hrn = api.auth.get_authority(hrn)
  45         if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
  46             auth_hrn = hrn
  47         # get record info
  48         auth_info = api.auth.get_auth_info(auth_hrn)
  49         table = SfaTable()
  50         records = table.findObjects({'type': type, 'hrn': hrn})
  51         if not records:
  52             raise RecordNotFound(hrn)
  53         record = records[0]
  54
  55         # verify_cancreate_credential requires that the member lists
  56         # (researchers, pis, etc) be filled in
  57         if not api.driver.is_enabled_entity (record, api.aggregates):
  58               raise AccountNotEnabled(": PlanetLab account %s is not enabled. Please contact your site PI" %(record['email']))
  59
  60         # get the callers gid
  61         # if this is a self cred the record's gid is the caller's gid
  62         if is_self:
  63             caller_hrn = hrn
  64             caller_gid = record.get_gid_object()
  65         else:
  66             caller_gid = api.auth.client_cred.get_gid_caller()
  67             caller_hrn = caller_gid.get_hrn()
  68
  69         object_hrn = record.get_gid_object().get_hrn()
  70         rights = api.auth.determine_user_rights(caller_hrn, record)
  71         # make sure caller has rights to this object
  72         if rights.is_empty():
  73             raise PermissionError(caller_hrn + " has no rights to " + record['name'])
  74
  75         object_gid = GID(string=record['gid'])
  76         new_cred = Credential(subject = object_gid.get_subject())
  77         new_cred.set_gid_caller(caller_gid)
  78         new_cred.set_gid_object(object_gid)
  79         new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
  80         #new_cred.set_pubkey(object_gid.get_pubkey())
  81         new_cred.set_privileges(rights)
  82         new_cred.get_privileges().delegate_all_privileges(True)
  83         if 'expires' in record:
  84             new_cred.set_expiration(int(record['expires']))
  85         auth_kind = "authority,ma,sa"
  86         # Parent not necessary, verify with certs
  87         #new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
  88         new_cred.encode()
  89         new_cred.sign()
  90
  91         return new_cred.save_to_string(save_parents=True)
  92
  93
  94     def Resolve(self, api, xrns, type=None, full=True):
  95
  96         if not isinstance(xrns, types.ListType):
  97             xrns = [xrns]
  98             # try to infer type if not set and we get a single input
  99             if not type:
 100                 type = Xrn(xrns).get_type()
 101         hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
 102         # load all known registry names into a prefix tree and attempt to find
 103         # the longest matching prefix
 104         # create a dict where key is a registry hrn and its value is a
 105         # hrns at that registry (determined by the known prefix tree).
 106         xrn_dict = {}
 107         registries = api.registries
 108         tree = prefixTree()
 109         registry_hrns = registries.keys()
 110         tree.load(registry_hrns)
 111         for xrn in xrns:
 112             registry_hrn = tree.best_match(urn_to_hrn(xrn)[0])
 113             if registry_hrn not in xrn_dict:
 114                 xrn_dict[registry_hrn] = []
 115             xrn_dict[registry_hrn].append(xrn)
 116
 117         records = []
 118         for registry_hrn in xrn_dict:
 119             # skip the hrn without a registry hrn
 120             # XX should we let the user know the authority is unknown?
 121             if not registry_hrn:
 122                 continue
 123
 124             # if the best match (longest matching hrn) is not the local registry,
 125             # forward the request
 126             xrns = xrn_dict[registry_hrn]
 127             if registry_hrn != api.hrn:
 128                 credential = api.getCredential()
 129                 interface = api.registries[registry_hrn]
 130                 server_proxy = api.server_proxy(interface, credential)
 131                 peer_records = server_proxy.Resolve(xrns, credential)
 132                 records.extend([SfaRecord(dict=record).as_dict() for record in peer_records])
 133
 134         # try resolving the remaining unfound records at the local registry
 135         local_hrns = list ( set(hrns).difference([record['hrn'] for record in records]) )
 136         #
 137         table = SfaTable()
 138         local_records = table.findObjects({'hrn': local_hrns})
 139         # xxx driver todo
 140         if full:
 141             api.driver.fill_record_info(local_records, api.aggregates)
 142
 143         # convert local record objects to dicts
 144         records.extend([dict(record) for record in local_records])
 145         if type:
 146             records = filter(lambda rec: rec['type'] in [type], records)
 147
 148         if not records:
 149             raise RecordNotFound(str(hrns))
 150
 151         return records
 152
 153     def List(self, api, xrn, origin_hrn=None):
 154         hrn, type = urn_to_hrn(xrn)
 155         # load all know registry names into a prefix tree and attempt to find
 156         # the longest matching prefix
 157         records = []
 158         registries = api.registries
 159         registry_hrns = registries.keys()
 160         tree = prefixTree()
 161         tree.load(registry_hrns)
 162         registry_hrn = tree.best_match(hrn)
 163
 164         #if there was no match then this record belongs to an unknow registry
 165         if not registry_hrn:
 166             raise MissingAuthority(xrn)
 167         # if the best match (longest matching hrn) is not the local registry,
 168         # forward the request
 169         records = []
 170         if registry_hrn != api.hrn:
 171             credential = api.getCredential()
 172             interface = api.registries[registry_hrn]
 173             server_proxy = api.server_proxy(interface, credential)
 174             record_list = server_proxy.List(xrn, credential)
 175             records = [SfaRecord(dict=record).as_dict() for record in record_list]
 176
 177         # if we still have not found the record yet, try the local registry
 178         if not records:
 179             if not api.auth.hierarchy.auth_exists(hrn):
 180                 raise MissingAuthority(hrn)
 181
 182             table = SfaTable()
 183             records = table.find({'authority': hrn})
 184
 185         return records
 186
 187
 188     def CreateGid(self, api, xrn, cert):
 189         # get the authority
 190         authority = Xrn(xrn=xrn).get_authority_hrn()
 191         auth_info = api.auth.get_auth_info(authority)
 192         if not cert:
 193             pkey = Keypair(create=True)
 194         else:
 195             certificate = Certificate(string=cert)
 196             pkey = certificate.get_pubkey()
 197         gid = api.auth.hierarchy.create_gid(xrn, create_uuid(), pkey)
 198         return gid.save_to_string(save_parents=True)
 199
 200     def Register(self, api, record):
 201
 202         hrn, type = record['hrn'], record['type']
 203         urn = hrn_to_urn(hrn,type)
 204         # validate the type
 205         if type not in ['authority', 'slice', 'node', 'user']:
 206             raise UnknownSfaType(type)
 207
 208         # check if record already exists
 209         table = SfaTable()
 210         existing_records = table.find({'type': type, 'hrn': hrn})
 211         if existing_records:
 212             raise ExistingRecord(hrn)
 213
 214         record = SfaRecord(dict = record)
 215         record['authority'] = get_authority(record['hrn'])
 216         auth_info = api.auth.get_auth_info(record['authority'])
 217         pub_key = None
 218         # make sure record has a gid
 219         if 'gid' not in record:
 220             uuid = create_uuid()
 221             pkey = Keypair(create=True)
 222             if 'key' in record and record['key']:
 223                 # use only first key in record
 224                 if isinstance(record['key'], types.ListType):
 225                     pub_key = record['key'][0]
 226                 else:
 227                     pub_key = record['key']
 228                 pkey = convert_public_key(pub_key)
 229
 230             gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 231             gid = gid_object.save_to_string(save_parents=True)
 232             record['gid'] = gid
 233             record.set_gid(gid)
 234
 235         if type in ["authority"]:
 236             # update the tree
 237             if not api.auth.hierarchy.auth_exists(hrn):
 238                 api.auth.hierarchy.create_auth(hrn_to_urn(hrn,'authority'))
 239
 240             # get the GID from the newly created authority
 241             gid = auth_info.get_gid_object()
 242             record.set_gid(gid.save_to_string(save_parents=True))
 243             pointer = api.driver.register (hrn, record, pub_key)
 244
 245         elif (type == "slice"):
 246             pointer = api.driver.register (hrn, record, pub_key)
 247
 248         elif  (type == "user"):
 249             pointer = api.driver.register (hrn, record, pub_key)
 250
 251         elif (type == "node"):
 252             pointer = api.driver.register (hrn, record, pub_key)
 253
 254         record.set_pointer(pointer)
 255         record_id = table.insert(record)
 256         record['record_id'] = record_id
 257
 258         # update membership for researchers, pis, owners, operators
 259         api.driver.update_membership(None, record)
 260
 261         return record.get_gid_object().save_to_string(save_parents=True)
 262
 263     def Update(self, api, record_dict):
 264         new_record = SfaRecord(dict = record_dict)
 265         type = new_record['type']
 266         hrn = new_record['hrn']
 267         urn = hrn_to_urn(hrn,type)
 268         table = SfaTable()
 269         # make sure the record exists
 270         records = table.findObjects({'type': type, 'hrn': hrn})
 271         if not records:
 272             raise RecordNotFound(hrn)
 273         record = records[0]
 274         record['last_updated'] = time.gmtime()
 275
 276         # Update_membership needs the membership lists in the existing record
 277         # filled in, so it can see if members were added or removed
 278         api.driver.fill_record_info(record, api.aggregates)
 279
 280         # Use the pointer from the existing record, not the one that the user
 281         # gave us. This prevents the user from inserting a forged pointer
 282         pointer = record['pointer']
 283         # update the PLC information that was specified with the record
 284
 285         if (type == "authority"):
 286             api.driver.UpdateSite(pointer, new_record)
 287
 288         elif type == "slice":
 289             pl_record=api.driver.sfa_fields_to_pl_fields(type, hrn, new_record)
 290             if 'name' in pl_record:
 291                 pl_record.pop('name')
 292                 api.driver.UpdateSlice(pointer, pl_record)
 293
 294         elif type == "user":
 295             # SMBAKER: UpdatePerson only allows a limited set of fields to be
 296             #    updated. Ideally we should have a more generic way of doing
 297             #    this. I copied the field names from UpdatePerson.py...
 298             update_fields = {}
 299             all_fields = new_record
 300             for key in all_fields.keys():
 301                 if key in ['first_name', 'last_name', 'title', 'email',
 302                            'password', 'phone', 'url', 'bio', 'accepted_aup',
 303                            'enabled']:
 304                     update_fields[key] = all_fields[key]
 305             api.driver.UpdatePerson(pointer, update_fields)
 306
 307             if 'key' in new_record and new_record['key']:
 308                 # must check this key against the previous one if it exists
 309                 persons = api.driver.GetPersons([pointer], ['key_ids'])
 310                 person = persons[0]
 311                 keys = person['key_ids']
 312                 keys = api.driver.GetKeys(person['key_ids'])
 313                 key_exists = False
 314                 if isinstance(new_record['key'], types.ListType):
 315                     new_key = new_record['key'][0]
 316                 else:
 317                     new_key = new_record['key']
 318
 319                 # Delete all stale keys
 320                 for key in keys:
 321                     if new_record['key'] != key['key']:
 322                         api.driver.DeleteKey(key['key_id'])
 323                     else:
 324                         key_exists = True
 325                 if not key_exists:
 326                     api.driver.AddPersonKey(pointer, {'key_type': 'ssh', 'key': new_key})
 327
 328                 # update the openssl key and gid
 329                 pkey = convert_public_key(new_key)
 330                 uuid = create_uuid()
 331                 gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 332                 gid = gid_object.save_to_string(save_parents=True)
 333                 record['gid'] = gid
 334                 record = SfaRecord(dict=record)
 335                 table.update(record)
 336
 337         elif type == "node":
 338             api.driver.UpdateNode(pointer, new_record)
 339
 340         else:
 341             raise UnknownSfaType(type)
 342
 343         # update membership for researchers, pis, owners, operators
 344         api.driver.update_membership(record, new_record)
 345
 346         return 1
 347
 348     # expecting an Xrn instance
 349     def Remove(self, api, xrn, origin_hrn=None):
 350
 351         table = SfaTable()
 352         filter = {'hrn': xrn.get_hrn()}
 353         hrn=xrn.get_hrn()
 354         type=xrn.get_type()
 355         if type and type not in ['all', '*']:
 356             filter['type'] = type
 357
 358         records = table.find(filter)
 359         if not records: raise RecordNotFound(hrn)
 360         record = records[0]
 361         type = record['type']
 362
 363         credential = api.getCredential()
 364         registries = api.registries
 365
 366         # Try to remove the object from the PLCDB of federated agg.
 367         # This is attempted before removing the object from the local agg's PLCDB and sfa table
 368         if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']:
 369             for registry in registries:
 370                 if registry not in [api.hrn]:
 371                     try:
 372                         result=registries[registry].remove_peer_object(credential, record, origin_hrn)
 373                     except:
 374                         pass
 375         if type == "user":
 376             persons = api.driver.GetPersons(record['pointer'])
 377             # only delete this person if he has site ids. if he doesnt, it probably means
 378             # he was just removed from a site, not actually deleted
 379             if persons and persons[0]['site_ids']:
 380                 api.driver.DeletePerson(record['pointer'])
 381         elif type == "slice":
 382             if api.driver.GetSlices(record['pointer']):
 383                 api.driver.DeleteSlice(record['pointer'])
 384         elif type == "node":
 385             if api.driver.GetNodes(record['pointer']):
 386                 api.driver.DeleteNode(record['pointer'])
 387         elif type == "authority":
 388             if api.driver.GetSites(record['pointer']):
 389                 api.driver.DeleteSite(record['pointer'])
 390         else:
 391             raise UnknownSfaType(type)
 392
 393         table.remove(record)
 394
 395         return 1
 396
 397     def get_key_from_incoming_ip (self, api):
 398         # verify that the callers's ip address exist in the db and is an interface
 399         # for a node in the db
 400         (ip, port) = api.remote_addr
 401         interfaces = api.driver.GetInterfaces({'ip': ip}, ['node_id'])
 402         if not interfaces:
 403             raise NonExistingRecord("no such ip %(ip)s" % locals())
 404         nodes = api.driver.GetNodes([interfaces[0]['node_id']], ['node_id', 'hostname'])
 405         if not nodes:
 406             raise NonExistingRecord("no such node using ip %(ip)s" % locals())
 407         node = nodes[0]
 408
 409         # look up the sfa record
 410         table = SfaTable()
 411         records = table.findObjects({'type': 'node', 'pointer': node['node_id']})
 412         if not records:
 413             raise RecordNotFound("pointer:" + str(node['node_id']))
 414         record = records[0]
 415
 416         # generate a new keypair and gid
 417         uuid = create_uuid()
 418         pkey = Keypair(create=True)
 419         urn = hrn_to_urn(record['hrn'], record['type'])
 420         gid_object = api.auth.hierarchy.create_gid(urn, uuid, pkey)
 421         gid = gid_object.save_to_string(save_parents=True)
 422         record['gid'] = gid
 423         record.set_gid(gid)
 424
 425         # update the record
 426         table.update(record)
 427
 428         # attempt the scp the key
 429         # and gid onto the node
 430         # this will only work for planetlab based components
 431         (kfd, key_filename) = tempfile.mkstemp()
 432         (gfd, gid_filename) = tempfile.mkstemp()
 433         pkey.save_to_file(key_filename)
 434         gid_object.save_to_file(gid_filename, save_parents=True)
 435         host = node['hostname']
 436         key_dest="/etc/sfa/node.key"
 437         gid_dest="/etc/sfa/node.gid"
 438         scp = "/usr/bin/scp"
 439         #identity = "/etc/planetlab/root_ssh_key.rsa"
 440         identity = "/etc/sfa/root_ssh_key"
 441         scp_options=" -i %(identity)s " % locals()
 442         scp_options+="-o StrictHostKeyChecking=no " % locals()
 443         scp_key_command="%(scp)s %(scp_options)s %(key_filename)s root@%(host)s:%(key_dest)s" %\
 444                          locals()
 445         scp_gid_command="%(scp)s %(scp_options)s %(gid_filename)s root@%(host)s:%(gid_dest)s" %\
 446                          locals()
 447
 448         all_commands = [scp_key_command, scp_gid_command]
 449
 450         for command in all_commands:
 451             (status, output) = commands.getstatusoutput(command)
 452             if status:
 453                 raise Exception, output
 454
 455         for filename in [key_filename, gid_filename]:
 456             os.unlink(filename)
 457
 458         return 1