sfa/managers/registry_manager_pl.py

   1 import types
   2 import time
   3 from sfa.server.registry import Registries
   4 from sfa.util.prefixTree import prefixTree
   5 from sfa.util.record import SfaRecord
   6 from sfa.util.table import SfaTable
   7 from sfa.util.record import SfaRecord
   8 from sfa.trust.gid import GID
   9 from sfa.util.namespace import *
  10 from sfa.trust.credential import *
  11 from sfa.trust.certificate import *
  12 from sfa.util.faults import *
  13
  14 def get_credential(api, hrn, type, is_self=False):
  15     # Is this a root or sub authority
  16     auth_hrn = api.auth.get_authority(hrn)
  17     if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
  18         auth_hrn = hrn
  19     # get record info
  20     auth_info = api.auth.get_auth_info(auth_hrn)
  21     table = SfaTable()
  22     records = table.findObjects({'type': type, 'hrn': hrn})
  23     if not records:
  24         raise RecordNotFound(hrn)
  25     record = records[0]
  26
  27     # verify_cancreate_credential requires that the member lists
  28     # (researchers, pis, etc) be filled in
  29     api.fill_record_info(record)
  30
  31     # get the callers gid
  32     # if this is a self cred the record's gid is the caller's gid
  33     if is_self:
  34         caller_hrn = hrn
  35         caller_gid = record.get_gid_object()
  36     else:
  37         caller_gid = api.auth.client_cred.get_gid_caller()
  38         caller_hrn = caller_gid.get_hrn()
  39
  40     object_hrn = record.get_gid_object().get_hrn()
  41     rights = api.auth.determine_user_rights(caller_hrn, record)
  42     # make sure caller has rights to this object
  43     if rights.is_empty():
  44         raise PermissionError(caller_hrn + " has no rights to " + record['name'])
  45
  46     object_gid = GID(string=record['gid'])
  47     new_cred = Credential(subject = object_gid.get_subject())
  48     new_cred.set_gid_caller(caller_gid)
  49     new_cred.set_gid_object(object_gid)
  50     new_cred.set_issuer(key=auth_info.get_pkey_object(), subject=auth_hrn)
  51     new_cred.set_pubkey(object_gid.get_pubkey())
  52     new_cred.set_privileges(rights)
  53     new_cred.set_delegate(True)
  54     auth_kind = "authority,ma,sa"
  55     new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
  56     new_cred.encode()
  57     new_cred.sign()
  58
  59     return new_cred.save_to_string(save_parents=True)
  60
  61 def resolve(api, hrns, type=None, origin_hrn=None):
  62
  63     # load all know registry names into a prefix tree and attempt to find
  64     # the longest matching prefix
  65     if not isinstance(hrns, types.ListType):
  66         hrns = [hrns]
  67
  68     # create a dict whre key is an registry hrn and its value is a
  69     # hrns at that registry (determined by the known prefix tree).
  70     hrn_dict = {}
  71     registries = Registries(api)
  72     tree = prefixTree()
  73     registry_hrns = registries.keys()
  74     tree.load(registry_hrns)
  75     for hrn in hrns:
  76         registry_hrn = tree.best_match(hrn)
  77         if registry_hrn not in hrn_dict:
  78             hrn_dict[registry_hrn] = []
  79         hrn_dict[registry_hrn].append(hrn)
  80
  81     records = []
  82     for registry_hrn in hrn_dict:
  83         # skip the hrn without a registry hrn
  84         # XX should we let the user know the authority is unknown?
  85         if not registry_hrn:
  86             continue
  87
  88         # if the best match (longest matching hrn) is not the local registry,
  89         # forward the request
  90         hrns = hrn_dict[registry_hrn]
  91         if registry_hrn != api.hrn:
  92             credential = api.getCredential()
  93             peer_records = registries[registry_hrn].resolve(credential, hrn, origin_hrn)
  94             records.extend([SfaRecord(dict=record).as_dict() for record in peer_records])
  95
  96     # try resolving the remaining unfound records at the local registry
  97     remaining_hrns = set(hrns).difference([record['hrn'] for record in records])
  98     remaining_hrns = [hrn for hrn in remaining_hrns]
  99     table = SfaTable()
 100     local_records = table.findObjects({'hrn': remaining_hrns})
 101     for record in local_records:
 102         try:
 103             api.fill_record_info(record)
 104             records.append(dict(record))
 105         except PlanetLabRecordDoesNotExist:
 106             # silently drop the ones that are missing in PL
 107             print >> log, "ignoring SFA record ", record['hrn'], \
 108                               " because pl record does not exist"
 109             table.remove(record)
 110
 111     if not records:
 112         raise RecordNotFound(str(hrns))
 113
 114     if type:
 115         records = filter(lambda rec: rec['type'] in [type], records)
 116
 117     return records
 118
 119 def list(api, hrn):
 120     # load all know registry names into a prefix tree and attempt to find
 121     # the longest matching prefix
 122     records = []
 123     registries = Registries(api)
 124     hrns = registries.keys()
 125     tree = prefixTree()
 126     tree.load(hrns)
 127     registry_hrn = tree.best_match(hrn)
 128
 129     #if there was no match then this record belongs to an unknow registry
 130     if not registry_hrn:
 131         raise MissingAuthority(hrn)
 132
 133     # if the best match (longest matching hrn) is not the local registry,
 134     # forward the request
 135     records = []
 136     if registry_hrn != api.hrn:
 137         credential = api.getCredential()
 138         record_list = registries[registry_hrn].list(credential, hrn, origin_hrn)
 139         records = [SfaRecord(dict=record).as_dict() for record in record_list]
 140
 141     # if we still havnt found the record yet, try the local registry
 142     if not records:
 143         if not api.auth.hierarchy.auth_exists(hrn):
 144             raise MissingAuthority(hrn)
 145
 146         table = SfaTable()
 147         records = table.find({'authority': hrn})
 148
 149     return records
 150
 151
 152 def register(api, record):
 153
 154     hrn, type = record['hrn'], record['type']
 155
 156     # validate the type
 157     if type not in ['authority', 'slice', 'node', 'user']:
 158         raise UnknownSfaType(type)
 159
 160     # check if record already exists
 161     table = SfaTable()
 162     existing_records = table.find({'type': type, 'hrn': hrn})
 163     if existing_records:
 164         raise ExistingRecord(hrn)
 165
 166     record = SfaRecord(dict = record)
 167     record['authority'] = get_authority(record['hrn'])
 168     type = record['type']
 169     hrn = record['hrn']
 170     api.auth.verify_object_permission(hrn)
 171     auth_info = api.auth.get_auth_info(record['authority'])
 172     pub_key = None
 173     # make sure record has a gid
 174     if 'gid' not in record:
 175         uuid = create_uuid()
 176         pkey = Keypair(create=True)
 177         if 'key' in record and record['key']:
 178             if isinstance(record['key'], types.ListType):
 179                 pub_key = record['key'][0]
 180             else:
 181                 pub_key = record['key']
 182             pkey = convert_public_key(pub_key)
 183
 184         gid_object = api.auth.hierarchy.create_gid(hrn, uuid, pkey)
 185         gid = gid_object.save_to_string(save_parents=True)
 186         record['gid'] = gid
 187         record.set_gid(gid)
 188
 189     if type in ["authority"]:
 190         # update the tree
 191         if not api.auth.hierarchy.auth_exists(hrn):
 192             api.auth.hierarchy.create_auth(hrn)
 193
 194         # get the GID from the newly created authority
 195         gid = auth_info.get_gid_object()
 196         record.set_gid(gid.save_to_string(save_parents=True))
 197         pl_record = api.sfa_fields_to_pl_fields(type, hrn, record)
 198         sites = api.plshell.GetSites(api.plauth, [pl_record['login_base']])
 199         if not sites:
 200             pointer = api.plshell.AddSite(api.plauth, pl_record)
 201         else:
 202             pointer = sites[0]['site_id']
 203
 204         record.set_pointer(pointer)
 205         record['pointer'] = pointer
 206
 207     elif (type == "slice"):
 208         acceptable_fields=['url', 'instantiation', 'name', 'description']
 209         pl_record = api.sfa_fields_to_pl_fields(type, hrn, record)
 210         for key in pl_record.keys():
 211             if key not in acceptable_fields:
 212                 pl_record.pop(key)
 213             slices = api.plshell.GetSlices(api.plauth, [pl_record['name']])
 214             if not slices:
 215                 pointer = api.plshell.AddSlice(api.plauth, pl_record)
 216             else:
 217                 pointer = slices[0]['slice_id']
 218             record.set_pointer(pointer)
 219             record['pointer'] = pointer
 220
 221     elif  (type == "user"):
 222         persons = api.plshell.GetPersons(api.plauth, [record['email']])
 223         if not persons:
 224             pointer = api.plshell.AddPerson(api.plauth, dict(record))
 225         else:
 226             pointer = persons[0]['person_id']
 227
 228         if 'enabled' in record and record['enabled']:
 229             api.plshell.UpdatePerson(api.plauth, pointer, {'enabled': record['enabled']})
 230         # add this persons to the site only if he is being added for the first
 231         # time by sfa and doesont already exist in plc
 232         if not persons or not persons[0]['site_ids']:
 233             login_base = get_leaf(record['authority'])
 234             api.plshell.AddPersonToSite(api.plauth, pointer, login_base)
 235
 236         # What roles should this user have?
 237         api.plshell.AddRoleToPerson(api.plauth, 'user', pointer)
 238         # Add the user's key
 239         if pub_key:
 240             api.plshell.AddPersonKey(api.plauth, pointer, {'key_type' : 'ssh', 'key' : pub_key})
 241
 242     elif (type == "node"):
 243         pl_record = api.sfa_fields_to_pl_fields(type, hrn, record)
 244         login_base = hrn_to_pl_login_base(record['authority'])
 245         nodes = api.plshell.GetNodes(api.plauth, [pl_record['hostname']])
 246         if not nodes:
 247             pointer = api.plshell.AddNode(api.plauth, login_base, pl_record)
 248         else:
 249             pointer = nodes[0]['node_id']
 250
 251     record['pointer'] = pointer
 252     record.set_pointer(pointer)
 253     record_id = table.insert(record)
 254     record['record_id'] = record_id
 255
 256     # update membership for researchers, pis, owners, operators
 257     api.update_membership(None, record)
 258
 259     return record.get_gid_object().save_to_string(save_parents=True)
 260
 261 def update(api, record_dict):
 262     new_record = SfaRecord(dict = record_dict)
 263     type = new_record['type']
 264     hrn = new_record['hrn']
 265     api.auth.verify_object_permission(hrn)
 266     table = SfaTable()
 267     # make sure the record exists
 268     records = table.findObjects({'type': type, 'hrn': hrn})
 269     if not records:
 270         raise RecordNotFound(hrn)
 271     record = records[0]
 272     record['last_updated'] = time.gmtime()
 273
 274     # Update_membership needs the membership lists in the existing record
 275     # filled in, so it can see if members were added or removed
 276     api.fill_record_info(record)
 277
 278     # Use the pointer from the existing record, not the one that the user
 279     # gave us. This prevents the user from inserting a forged pointer
 280     pointer = record['pointer']
 281     # update the PLC information that was specified with the record
 282
 283     if (type == "authority"):
 284         api.plshell.UpdateSite(api.plauth, pointer, new_record)
 285
 286     elif type == "slice":
 287         pl_record=api.sfa_fields_to_pl_fields(type, hrn, new_record)
 288         if 'name' in pl_record:
 289             pl_record.pop('name')
 290             api.plshell.UpdateSlice(api.plauth, pointer, pl_record)
 291
 292     elif type == "user":
 293         # SMBAKER: UpdatePerson only allows a limited set of fields to be
 294         #    updated. Ideally we should have a more generic way of doing
 295         #    this. I copied the field names from UpdatePerson.py...
 296         update_fields = {}
 297         all_fields = new_record
 298         for key in all_fields.keys():
 299             if key in ['first_name', 'last_name', 'title', 'email',
 300                        'password', 'phone', 'url', 'bio', 'accepted_aup',
 301                        'enabled']:
 302                 update_fields[key] = all_fields[key]
 303         api.plshell.UpdatePerson(api.plauth, pointer, update_fields)
 304
 305         if 'key' in new_record and new_record['key']:
 306             # must check this key against the previous one if it exists
 307             persons = api.plshell.GetPersons(api.plauth, [pointer], ['key_ids'])
 308             person = persons[0]
 309             keys = person['key_ids']
 310             keys = api.plshell.GetKeys(api.plauth, person['key_ids'])
 311             key_exists = False
 312             if isinstance(new_record['key'], types.ListType):
 313                 new_key = new_record['key'][0]
 314             else:
 315                 new_key = new_record['key']
 316
 317             # Delete all stale keys
 318             for key in keys:
 319                 if new_record['key'] != key['key']:
 320                     api.plshell.DeleteKey(api.plauth, key['key_id'])
 321                 else:
 322                     key_exists = True
 323             if not key_exists:
 324                 api.plshell.AddPersonKey(api.plauth, pointer, {'key_type': 'ssh', 'key': new_key})
 325
 326             # update the openssl key and gid
 327             pkey = convert_public_key(new_key)
 328             uuid = create_uuid()
 329             gid_object = api.auth.hierarchy.create_gid(hrn, uuid, pkey)
 330             gid = gid_object.save_to_string(save_parents=True)
 331             record['gid'] = gid
 332             record = SfaRecord(dict=record)
 333             table.update(record)
 334
 335     elif type == "node":
 336         api.plshell.UpdateNode(api.plauth, pointer, new_record)
 337
 338     else:
 339         raise UnknownSfaType(type)
 340
 341     # update membership for researchers, pis, owners, operators
 342     api.update_membership(record, new_record)
 343
 344     return 1
 345
 346 def remove(api, hrn, type, origin_hrn=None):
 347     table = SfaTable()
 348     filter = {'hrn': hrn}
 349     if type not in ['all', '*']:
 350         filter['type'] = type
 351     records = table.find(filter)
 352     if not records:
 353         raise RecordNotFound(hrn)
 354     record = records[0]
 355     type = record['type']
 356
 357     credential = api.getCredential()
 358     registries = Registries(api)
 359
 360     # Try to remove the object from the PLCDB of federated agg.
 361     # This is attempted before removing the object from the local agg's PLCDB and sfa table
 362     if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']:
 363         for registry in registries:
 364             if registry not in [api.hrn]:
 365                 try:
 366                     result=registries[registry].remove_peer_object(credential, record, origin_hrn)
 367                 except:
 368                     pass
 369     if type == "user":
 370         persons = api.plshell.GetPersons(api.plauth, record['pointer'])
 371         # only delete this person if he has site ids. if he doesnt, it probably means
 372         # he was just removed from a site, not actually deleted
 373         if persons and persons[0]['site_ids']:
 374             api.plshell.DeletePerson(api.plauth, record['pointer'])
 375     elif type == "slice":
 376         if api.plshell.GetSlices(api.plauth, record['pointer']):
 377             api.plshell.DeleteSlice(api.plauth, record['pointer'])
 378     elif type == "node":
 379         if api.plshell.GetNodes(api.plauth, record['pointer']):
 380             api.plshell.DeleteNode(api.plauth, record['pointer'])
 381     elif type == "authority":
 382         if api.plshell.GetSites(api.plauth, record['pointer']):
 383             api.plshell.DeleteSite(api.plauth, record['pointer'])
 384     else:
 385         raise UnknownSfaType(type)
 386
 387     table.remove(record)
 388
 389     return 1
 390
 391 def remove_peer_object(api, record, origin_hrn=None):
 392     pass
 393
 394 def register_peer_object(api, record, origin_hrn=None):
 395     pass