sfa/managers/registry_manager_pl.py

   1 import types
   2 import time
   3 from sfa.util.prefixTree import prefixTree
   4 from sfa.util.record import SfaRecord
   5 from sfa.util.table import SfaTable
   6 from sfa.util.record import SfaRecord
   7 from sfa.trust.gid import GID
   8 from sfa.util.namespace import *
   9 from sfa.trust.credential import *
  10 from sfa.trust.certificate import *
  11 from sfa.util.faults import *
  12
  13 def get_credential(api, xrn, type, is_self=False):
  14     # convert xrn to hrn
  15     if type:
  16         hrn = urn_to_hrn(xrn)[0]
  17     else:
  18         hrn, type = urn_to_hrn(xrn)
  19     # Is this a root or sub authority
  20     auth_hrn = api.auth.get_authority(hrn)
  21     if not auth_hrn or hrn == api.config.SFA_INTERFACE_HRN:
  22         auth_hrn = hrn
  23     # get record info
  24     auth_info = api.auth.get_auth_info(auth_hrn)
  25     table = SfaTable()
  26     records = table.findObjects({'type': type, 'hrn': hrn})
  27     if not records:
  28         raise RecordNotFound(hrn)
  29     record = records[0]
  30
  31     # verify_cancreate_credential requires that the member lists
  32     # (researchers, pis, etc) be filled in
  33     api.fill_record_info(record)
  34     if record['type']=='user':
  35        if not record['enabled']:
  36           raise AccountNotEnabled(": PlanetLab account %s is not enabled. Please contact your site PI" %(record['email']))
  37
  38     # get the callers gid
  39     # if this is a self cred the record's gid is the caller's gid
  40     if is_self:
  41         caller_hrn = hrn
  42         caller_gid = record.get_gid_object()
  43     else:
  44         caller_gid = api.auth.client_cred.get_gid_caller()
  45         caller_hrn = caller_gid.get_hrn()
  46
  47     object_hrn = record.get_gid_object().get_hrn()
  48     rights = api.auth.determine_user_rights(caller_hrn, record)
  49     # make sure caller has rights to this object
  50     if rights.is_empty():
  51         raise PermissionError(caller_hrn + " has no rights to " + record['name'])
  52
  53     object_gid = GID(string=record['gid'])
  54     new_cred = Credential(subject = object_gid.get_subject())
  55     new_cred.set_gid_caller(caller_gid)
  56     new_cred.set_gid_object(object_gid)
  57     new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
  58     #new_cred.set_pubkey(object_gid.get_pubkey())
  59     new_cred.set_privileges(rights)
  60     new_cred.get_privileges().delegate_all_privileges(True)
  61     auth_kind = "authority,ma,sa"
  62     # Parent not necessary, verify with certs
  63     #new_cred.set_parent(api.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
  64     new_cred.encode()
  65     new_cred.sign()
  66
  67     return new_cred.save_to_string(save_parents=True)
  68
  69 def resolve(api, xrns, type=None, origin_hrn=None, full=True):
  70
  71     # load all know registry names into a prefix tree and attempt to find
  72     # the longest matching prefix
  73     if not isinstance(xrns, types.ListType):
  74         xrns = [xrns]
  75     hrns = [urn_to_hrn(xrn)[0] for xrn in xrns]
  76     # create a dict whre key is an registry hrn and its value is a
  77     # hrns at that registry (determined by the known prefix tree).
  78     xrn_dict = {}
  79     registries = api.registries
  80     tree = prefixTree()
  81     registry_hrns = registries.keys()
  82     tree.load(registry_hrns)
  83     for xrn in xrns:
  84         registry_hrn = tree.best_match(urn_to_hrn(xrn)[0])
  85         if registry_hrn not in xrn_dict:
  86             xrn_dict[registry_hrn] = []
  87         xrn_dict[registry_hrn].append(xrn)
  88
  89     records = []
  90     for registry_hrn in xrn_dict:
  91         # skip the hrn without a registry hrn
  92         # XX should we let the user know the authority is unknown?
  93         if not registry_hrn:
  94             continue
  95
  96         # if the best match (longest matching hrn) is not the local registry,
  97         # forward the request
  98         xrns = xrn_dict[registry_hrn]
  99         if registry_hrn != api.hrn:
 100             credential = api.getCredential()
 101             peer_records = registries[registry_hrn].resolve(credential, xrns, origin_hrn)
 102             records.extend([SfaRecord(dict=record).as_dict() for record in peer_records])
 103
 104     # try resolving the remaining unfound records at the local registry
 105     remaining_hrns = set(hrns).difference([record['hrn'] for record in records])
 106     # convert set to list
 107     remaining_hrns = [hrn for hrn in remaining_hrns]
 108     table = SfaTable()
 109     local_records = table.findObjects({'hrn': remaining_hrns})
 110     if full:
 111         api.fill_record_info(local_records)
 112
 113     # convert local record objects to dicts
 114     records.extend([dict(record) for record in local_records])
 115     if not records:
 116         raise RecordNotFound(str(hrns))
 117
 118     if type:
 119         records = filter(lambda rec: rec['type'] in [type], records)
 120
 121     return records
 122
 123 def list(api, xrn, origin_hrn=None):
 124     hrn, type = urn_to_hrn(xrn)
 125     # load all know registry names into a prefix tree and attempt to find
 126     # the longest matching prefix
 127     records = []
 128     registries = api.registries
 129     registry_hrns = registries.keys()
 130     tree = prefixTree()
 131     tree.load(registry_hrns)
 132     registry_hrn = tree.best_match(hrn)
 133
 134     #if there was no match then this record belongs to an unknow registry
 135     if not registry_hrn:
 136         raise MissingAuthority(xrn)
 137
 138     # if the best match (longest matching hrn) is not the local registry,
 139     # forward the request
 140     records = []
 141     if registry_hrn != api.hrn:
 142         credential = api.getCredential()
 143         record_list = registries[registry_hrn].list(credential, xrn, origin_hrn)
 144         records = [SfaRecord(dict=record).as_dict() for record in record_list]
 145
 146     # if we still havnt found the record yet, try the local registry
 147     if not records:
 148         if not api.auth.hierarchy.auth_exists(hrn):
 149             raise MissingAuthority(hrn)
 150
 151         table = SfaTable()
 152         records = table.find({'authority': hrn})
 153
 154     return records
 155
 156
 157 def register(api, record):
 158
 159     hrn, type = record['hrn'], record['type']
 160
 161     # validate the type
 162     if type not in ['authority', 'slice', 'node', 'user']:
 163         raise UnknownSfaType(type)
 164
 165     # check if record already exists
 166     table = SfaTable()
 167     existing_records = table.find({'type': type, 'hrn': hrn})
 168     if existing_records:
 169         raise ExistingRecord(hrn)
 170
 171     record = SfaRecord(dict = record)
 172     record['authority'] = get_authority(record['hrn'])
 173     type = record['type']
 174     hrn = record['hrn']
 175     api.auth.verify_object_permission(hrn)
 176     auth_info = api.auth.get_auth_info(record['authority'])
 177     pub_key = None
 178     # make sure record has a gid
 179     if 'gid' not in record:
 180         uuid = create_uuid()
 181         pkey = Keypair(create=True)
 182         if 'key' in record and record['key']:
 183             if isinstance(record['key'], types.ListType):
 184                 pub_key = record['key'][0]
 185             else:
 186                 pub_key = record['key']
 187             pkey = convert_public_key(pub_key)
 188
 189         gid_object = api.auth.hierarchy.create_gid(hrn, uuid, pkey)
 190         gid = gid_object.save_to_string(save_parents=True)
 191         record['gid'] = gid
 192         record.set_gid(gid)
 193
 194     if type in ["authority"]:
 195         # update the tree
 196         if not api.auth.hierarchy.auth_exists(hrn):
 197             api.auth.hierarchy.create_auth(hrn)
 198
 199         # get the GID from the newly created authority
 200         gid = auth_info.get_gid_object()
 201         record.set_gid(gid.save_to_string(save_parents=True))
 202         pl_record = api.sfa_fields_to_pl_fields(type, hrn, record)
 203         sites = api.plshell.GetSites(api.plauth, [pl_record['login_base']])
 204         if not sites:
 205             pointer = api.plshell.AddSite(api.plauth, pl_record)
 206         else:
 207             pointer = sites[0]['site_id']
 208
 209         record.set_pointer(pointer)
 210         record['pointer'] = pointer
 211
 212     elif (type == "slice"):
 213         acceptable_fields=['url', 'instantiation', 'name', 'description']
 214         pl_record = api.sfa_fields_to_pl_fields(type, hrn, record)
 215         for key in pl_record.keys():
 216             if key not in acceptable_fields:
 217                 pl_record.pop(key)
 218         slices = api.plshell.GetSlices(api.plauth, [pl_record['name']])
 219         if not slices:
 220              pointer = api.plshell.AddSlice(api.plauth, pl_record)
 221         else:
 222              pointer = slices[0]['slice_id']
 223         record.set_pointer(pointer)
 224         record['pointer'] = pointer
 225
 226     elif  (type == "user"):
 227         persons = api.plshell.GetPersons(api.plauth, [record['email']])
 228         if not persons:
 229             pointer = api.plshell.AddPerson(api.plauth, dict(record))
 230         else:
 231             pointer = persons[0]['person_id']
 232
 233         if 'enabled' in record and record['enabled']:
 234             api.plshell.UpdatePerson(api.plauth, pointer, {'enabled': record['enabled']})
 235         # add this persons to the site only if he is being added for the first
 236         # time by sfa and doesont already exist in plc
 237         if not persons or not persons[0]['site_ids']:
 238             login_base = get_leaf(record['authority'])
 239             api.plshell.AddPersonToSite(api.plauth, pointer, login_base)
 240
 241         # What roles should this user have?
 242         api.plshell.AddRoleToPerson(api.plauth, 'user', pointer)
 243         # Add the user's key
 244         if pub_key:
 245             api.plshell.AddPersonKey(api.plauth, pointer, {'key_type' : 'ssh', 'key' : pub_key})
 246
 247     elif (type == "node"):
 248         pl_record = api.sfa_fields_to_pl_fields(type, hrn, record)
 249         login_base = hrn_to_pl_login_base(record['authority'])
 250         nodes = api.plshell.GetNodes(api.plauth, [pl_record['hostname']])
 251         if not nodes:
 252             pointer = api.plshell.AddNode(api.plauth, login_base, pl_record)
 253         else:
 254             pointer = nodes[0]['node_id']
 255
 256     record['pointer'] = pointer
 257     record.set_pointer(pointer)
 258     record_id = table.insert(record)
 259     record['record_id'] = record_id
 260
 261     # update membership for researchers, pis, owners, operators
 262     api.update_membership(None, record)
 263
 264     return record.get_gid_object().save_to_string(save_parents=True)
 265
 266 def update(api, record_dict):
 267     new_record = SfaRecord(dict = record_dict)
 268     type = new_record['type']
 269     hrn = new_record['hrn']
 270     api.auth.verify_object_permission(hrn)
 271     table = SfaTable()
 272     # make sure the record exists
 273     records = table.findObjects({'type': type, 'hrn': hrn})
 274     if not records:
 275         raise RecordNotFound(hrn)
 276     record = records[0]
 277     record['last_updated'] = time.gmtime()
 278
 279     # Update_membership needs the membership lists in the existing record
 280     # filled in, so it can see if members were added or removed
 281     api.fill_record_info(record)
 282
 283     # Use the pointer from the existing record, not the one that the user
 284     # gave us. This prevents the user from inserting a forged pointer
 285     pointer = record['pointer']
 286     # update the PLC information that was specified with the record
 287
 288     if (type == "authority"):
 289         api.plshell.UpdateSite(api.plauth, pointer, new_record)
 290
 291     elif type == "slice":
 292         pl_record=api.sfa_fields_to_pl_fields(type, hrn, new_record)
 293         if 'name' in pl_record:
 294             pl_record.pop('name')
 295             api.plshell.UpdateSlice(api.plauth, pointer, pl_record)
 296
 297     elif type == "user":
 298         # SMBAKER: UpdatePerson only allows a limited set of fields to be
 299         #    updated. Ideally we should have a more generic way of doing
 300         #    this. I copied the field names from UpdatePerson.py...
 301         update_fields = {}
 302         all_fields = new_record
 303         for key in all_fields.keys():
 304             if key in ['first_name', 'last_name', 'title', 'email',
 305                        'password', 'phone', 'url', 'bio', 'accepted_aup',
 306                        'enabled']:
 307                 update_fields[key] = all_fields[key]
 308         api.plshell.UpdatePerson(api.plauth, pointer, update_fields)
 309
 310         if 'key' in new_record and new_record['key']:
 311             # must check this key against the previous one if it exists
 312             persons = api.plshell.GetPersons(api.plauth, [pointer], ['key_ids'])
 313             person = persons[0]
 314             keys = person['key_ids']
 315             keys = api.plshell.GetKeys(api.plauth, person['key_ids'])
 316             key_exists = False
 317             if isinstance(new_record['key'], types.ListType):
 318                 new_key = new_record['key'][0]
 319             else:
 320                 new_key = new_record['key']
 321
 322             # Delete all stale keys
 323             for key in keys:
 324                 if new_record['key'] != key['key']:
 325                     api.plshell.DeleteKey(api.plauth, key['key_id'])
 326                 else:
 327                     key_exists = True
 328             if not key_exists:
 329                 api.plshell.AddPersonKey(api.plauth, pointer, {'key_type': 'ssh', 'key': new_key})
 330
 331             # update the openssl key and gid
 332             pkey = convert_public_key(new_key)
 333             uuid = create_uuid()
 334             gid_object = api.auth.hierarchy.create_gid(hrn, uuid, pkey)
 335             gid = gid_object.save_to_string(save_parents=True)
 336             record['gid'] = gid
 337             record = SfaRecord(dict=record)
 338             table.update(record)
 339
 340     elif type == "node":
 341         api.plshell.UpdateNode(api.plauth, pointer, new_record)
 342
 343     else:
 344         raise UnknownSfaType(type)
 345
 346     # update membership for researchers, pis, owners, operators
 347     api.update_membership(record, new_record)
 348
 349     return 1
 350
 351 def remove(api, xrn, type, origin_hrn=None):
 352     # convert xrn to hrn
 353     if type:
 354         hrn = urn_to_hrn(xrn)[0]
 355     else:
 356         hrn, type = urn_to_hrn(xrn)
 357
 358     table = SfaTable()
 359     filter = {'hrn': hrn}
 360     if type not in ['all', '*']:
 361         filter['type'] = type
 362     records = table.find(filter)
 363     if not records:
 364         raise RecordNotFound(hrn)
 365     record = records[0]
 366     type = record['type']
 367
 368     credential = api.getCredential()
 369     registries = api.registries
 370
 371     # Try to remove the object from the PLCDB of federated agg.
 372     # This is attempted before removing the object from the local agg's PLCDB and sfa table
 373     if hrn.startswith(api.hrn) and type in ['user', 'slice', 'authority']:
 374         for registry in registries:
 375             if registry not in [api.hrn]:
 376                 try:
 377                     result=registries[registry].remove_peer_object(credential, record, origin_hrn)
 378                 except:
 379                     pass
 380     if type == "user":
 381         persons = api.plshell.GetPersons(api.plauth, record['pointer'])
 382         # only delete this person if he has site ids. if he doesnt, it probably means
 383         # he was just removed from a site, not actually deleted
 384         if persons and persons[0]['site_ids']:
 385             api.plshell.DeletePerson(api.plauth, record['pointer'])
 386     elif type == "slice":
 387         if api.plshell.GetSlices(api.plauth, record['pointer']):
 388             api.plshell.DeleteSlice(api.plauth, record['pointer'])
 389     elif type == "node":
 390         if api.plshell.GetNodes(api.plauth, record['pointer']):
 391             api.plshell.DeleteNode(api.plauth, record['pointer'])
 392     elif type == "authority":
 393         if api.plshell.GetSites(api.plauth, record['pointer']):
 394             api.plshell.DeleteSite(api.plauth, record['pointer'])
 395     else:
 396         raise UnknownSfaType(type)
 397
 398     table.remove(record)
 399
 400     return 1
 401
 402 def remove_peer_object(api, record, origin_hrn=None):
 403     pass
 404
 405 def register_peer_object(api, record, origin_hrn=None):
 406     pass