sfa/plc/api.py

   1 #
   2 # SFA XML-RPC and SOAP interfaces
   3 #
   4 ### $Id$
   5 ### $URL$
   6 #
   7
   8 import sys
   9 import os
  10 import traceback
  11 import string
  12 import xmlrpclib
  13 from sfa.trust.auth import Auth
  14 from sfa.util.config import *
  15 from sfa.util.faults import *
  16 from sfa.util.debug import *
  17 from sfa.trust.rights import *
  18 from sfa.trust.credential import *
  19 from sfa.trust.certificate import *
  20 from sfa.util.namespace import *
  21 from sfa.util.api import *
  22 from sfa.util.nodemanager import NodeManager
  23 from sfa.util.sfalogging import *
  24 try:
  25     from collections import defaultdict
  26 except:
  27     class defaultdict(dict):
  28         def __init__(self, default_factory=None, *a, **kw):
  29             if (default_factory is not None and
  30                 not hasattr(default_factory, '__call__')):
  31                 raise TypeError('first argument must be callable')
  32             dict.__init__(self, *a, **kw)
  33             self.default_factory = default_factory
  34         def __getitem__(self, key):
  35             try:
  36                 return dict.__getitem__(self, key)
  37             except KeyError:
  38                 return self.__missing__(key)
  39         def __missing__(self, key):
  40             if self.default_factory is None:
  41                 raise KeyError(key)
  42             self[key] = value = self.default_factory()
  43             return value
  44         def __reduce__(self):
  45             if self.default_factory is None:
  46                 args = tuple()
  47             else:
  48                 args = self.default_factory,
  49             return type(self), args, None, None, self.items()
  50         def copy(self):
  51             return self.__copy__()
  52         def __copy__(self):
  53             return type(self)(self.default_factory, self)
  54         def __deepcopy__(self, memo):
  55             import copy
  56             return type(self)(self.default_factory,
  57                               copy.deepcopy(self.items()))
  58         def __repr__(self):
  59             return 'defaultdict(%s, %s)' % (self.default_factory,
  60                                             dict.__repr__(self))
  61
  62
  63 ## end of http://code.activestate.com/recipes/523034/ }}}
  64
  65
  66 def list_to_dict(recs, key):
  67     """
  68     convert a list of dictionaries into a dictionary keyed on the
  69     specified dictionary key
  70     """
  71     keys = [rec[key] for rec in recs]
  72     return dict(zip(keys, recs))
  73
  74 class SfaAPI(BaseAPI):
  75
  76     # flat list of method names
  77     import sfa.methods
  78     methods = sfa.methods.all
  79
  80     def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8",
  81                  methods='sfa.methods', peer_cert = None, interface = None,
  82                 key_file = None, cert_file = None, cache = None):
  83         BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, \
  84                          peer_cert=peer_cert, interface=interface, key_file=key_file, \
  85                          cert_file=cert_file, cache=cache)
  86
  87         self.encoding = encoding
  88
  89         from sfa.util.table import SfaTable
  90         self.SfaTable = SfaTable
  91         # Better just be documenting the API
  92         if config is None:
  93             return
  94
  95         # Load configuration
  96         self.config = Config(config)
  97         self.auth = Auth(peer_cert)
  98         self.interface = interface
  99         self.key_file = key_file
 100         self.key = Keypair(filename=self.key_file)
 101         self.cert_file = cert_file
 102         self.cert = Certificate(filename=self.cert_file)
 103         self.credential = None
 104         # Initialize the PLC shell only if SFA wraps a myPLC
 105         rspec_type = self.config.get_aggregate_type()
 106         if (rspec_type == 'pl' or rspec_type == 'vini' or rspec_type == 'eucalyptus'):
 107             self.plshell = self.getPLCShell()
 108             self.plshell_version = "4.3"
 109
 110         self.hrn = self.config.SFA_INTERFACE_HRN
 111         self.time_format = "%Y-%m-%d %H:%M:%S"
 112         self.logger=get_sfa_logger()
 113
 114     def getPLCShell(self):
 115         self.plauth = {'Username': self.config.SFA_PLC_USER,
 116                        'AuthMethod': 'password',
 117                        'AuthString': self.config.SFA_PLC_PASSWORD}
 118
 119
 120         self.plshell_type = 'xmlrpc'
 121         # connect via xmlrpc
 122         url = self.config.SFA_PLC_URL
 123         shell = xmlrpclib.Server(url, verbose = 0, allow_none = True)
 124         return shell
 125
 126     def getCredential(self):
 127         if self.interface in ['registry']:
 128             return self.getCredentialFromLocalRegistry()
 129         else:
 130             return self.getCredentialFromRegistry()
 131
 132     def getCredentialFromRegistry(self):
 133         """
 134         Get our credential from a remote registry
 135         """
 136         type = 'authority'
 137         path = self.config.SFA_DATA_DIR
 138         filename = ".".join([self.interface, self.hrn, type, "cred"])
 139         cred_filename = path + os.sep + filename
 140         try:
 141             credential = Credential(filename = cred_filename)
 142             return credential.save_to_string(save_parents=True)
 143         except IOError:
 144             from sfa.server.registry import Registries
 145             registries = Registries(self)
 146             registry = registries[self.hrn]
 147             cert_string=self.cert.save_to_string(save_parents=True)
 148             # get self credential
 149             self_cred = registry.get_self_credential(cert_string, type, self.hrn)
 150             # get credential
 151             cred = registry.get_credential(self_cred, type, self.hrn)
 152
 153             # save cred to file
 154             Credential(string=cred).save_to_file(cred_filename, save_parents=True)
 155             return cred
 156
 157     def getCredentialFromLocalRegistry(self):
 158         """
 159         Get our current credential directly from the local registry.
 160         """
 161
 162         hrn = self.hrn
 163         auth_hrn = self.auth.get_authority(hrn)
 164
 165         # is this a root or sub authority
 166         if not auth_hrn or hrn == self.config.SFA_INTERFACE_HRN:
 167             auth_hrn = hrn
 168         auth_info = self.auth.get_auth_info(auth_hrn)
 169         table = self.SfaTable()
 170         records = table.findObjects(hrn)
 171         if not records:
 172             raise RecordNotFound
 173         record = records[0]
 174         type = record['type']
 175         object_gid = record.get_gid_object()
 176         new_cred = Credential(subject = object_gid.get_subject())
 177         new_cred.set_gid_caller(object_gid)
 178         new_cred.set_gid_object(object_gid)
 179         new_cred.set_issuer_keys(auth_info.get_privkey_filename(), auth_info.get_gid_filename())
 180
 181         r1 = determine_rights(type, hrn)
 182         new_cred.set_privileges(r1)
 183
 184         auth_kind = "authority,ma,sa"
 185
 186         new_cred.set_parent(self.auth.hierarchy.get_auth_cred(auth_hrn, kind=auth_kind))
 187
 188         new_cred.encode()
 189         new_cred.sign()
 190
 191         return new_cred.save_to_string(save_parents=True)
 192
 193
 194     def loadCredential (self):
 195         """
 196         Attempt to load credential from file if it exists. If it doesnt get
 197         credential from registry.
 198         """
 199
 200         # see if this file exists
 201         # XX This is really the aggregate's credential. Using this is easier than getting
 202         # the registry's credential from iteslf (ssl errors).
 203         ma_cred_filename = self.config.SFA_DATA_DIR + os.sep + self.interface + self.hrn + ".ma.cred"
 204         try:
 205             self.credential = Credential(filename = ma_cred_filename)
 206         except IOError:
 207             self.credential = self.getCredentialFromRegistry()
 208
 209     ##
 210     # Convert SFA fields to PLC fields for use when registering up updating
 211     # registry record in the PLC database
 212     #
 213     # @param type type of record (user, slice, ...)
 214     # @param hrn human readable name
 215     # @param sfa_fields dictionary of SFA fields
 216     # @param pl_fields dictionary of PLC fields (output)
 217
 218     def sfa_fields_to_pl_fields(self, type, hrn, record):
 219
 220         def convert_ints(tmpdict, int_fields):
 221             for field in int_fields:
 222                 if field in tmpdict:
 223                     tmpdict[field] = int(tmpdict[field])
 224
 225         pl_record = {}
 226         #for field in record:
 227         #    pl_record[field] = record[field]
 228
 229         if type == "slice":
 230             if not "instantiation" in pl_record:
 231                 pl_record["instantiation"] = "plc-instantiated"
 232             pl_record["name"] = hrn_to_pl_slicename(hrn)
 233             if "url" in record:
 234                pl_record["url"] = record["url"]
 235             if "description" in record:
 236                 pl_record["description"] = record["description"]
 237             if "expires" in record:
 238                 pl_record["expires"] = int(record["expires"])
 239
 240         elif type == "node":
 241             if not "hostname" in pl_record:
 242                 if not "hostname" in record:
 243                     raise MissingSfaInfo("hostname")
 244                 pl_record["hostname"] = record["hostname"]
 245             if not "model" in pl_record:
 246                 pl_record["model"] = "geni"
 247
 248         elif type == "authority":
 249             pl_record["login_base"] = hrn_to_pl_login_base(hrn)
 250
 251             if not "name" in pl_record:
 252                 pl_record["name"] = hrn
 253
 254             if not "abbreviated_name" in pl_record:
 255                 pl_record["abbreviated_name"] = hrn
 256
 257             if not "enabled" in pl_record:
 258                 pl_record["enabled"] = True
 259
 260             if not "is_public" in pl_record:
 261                 pl_record["is_public"] = True
 262
 263         return pl_record
 264
 265     def fill_record_pl_info(self, records):
 266         """
 267         Fill in the planetlab specific fields of a SFA record. This
 268         involves calling the appropriate PLC method to retrieve the
 269         database record for the object.
 270
 271         PLC data is filled into the pl_info field of the record.
 272
 273         @param record: record to fill in field (in/out param)
 274         """
 275         # get ids by type
 276         node_ids, site_ids, slice_ids = [], [], []
 277         person_ids, key_ids = [], []
 278         type_map = {'node': node_ids, 'authority': site_ids,
 279                     'slice': slice_ids, 'user': person_ids}
 280
 281         for record in records:
 282             for type in type_map:
 283                 if type == record['type']:
 284                     type_map[type].append(record['pointer'])
 285
 286         # get pl records
 287         nodes, sites, slices, persons, keys = {}, {}, {}, {}, {}
 288         if node_ids:
 289             node_list = self.plshell.GetNodes(self.plauth, node_ids)
 290             nodes = list_to_dict(node_list, 'node_id')
 291         if site_ids:
 292             site_list = self.plshell.GetSites(self.plauth, site_ids)
 293             sites = list_to_dict(site_list, 'site_id')
 294         if slice_ids:
 295             slice_list = self.plshell.GetSlices(self.plauth, slice_ids)
 296             slices = list_to_dict(slice_list, 'slice_id')
 297         if person_ids:
 298             person_list = self.plshell.GetPersons(self.plauth, person_ids)
 299             persons = list_to_dict(person_list, 'person_id')
 300             for person in persons:
 301                 key_ids.extend(persons[person]['key_ids'])
 302
 303         pl_records = {'node': nodes, 'authority': sites,
 304                       'slice': slices, 'user': persons}
 305
 306         if key_ids:
 307             key_list = self.plshell.GetKeys(self.plauth, key_ids)
 308             keys = list_to_dict(key_list, 'key_id')
 309
 310         # fill record info
 311         for record in records:
 312             # records with pointer==-1 do not have plc info.
 313             # for example, the top level authority records which are
 314             # authorities, but not PL "sites"
 315             if record['pointer'] == -1:
 316                 continue
 317
 318             for type in pl_records:
 319                 if record['type'] == type:
 320                     if record['pointer'] in pl_records[type]:
 321                         record.update(pl_records[type][record['pointer']])
 322                         break
 323             # fill in key info
 324             if record['type'] == 'user':
 325                 pubkeys = [keys[key_id]['key'] for key_id in record['key_ids'] if key_id in keys]
 326                 record['keys'] = pubkeys
 327
 328         # fill in record hrns
 329         records = self.fill_record_hrns(records)
 330
 331         return records
 332
 333     def fill_record_hrns(self, records):
 334         """
 335         convert pl ids to hrns
 336         """
 337
 338         # get ids
 339         slice_ids, person_ids, site_ids, node_ids = [], [], [], []
 340         for record in records:
 341             if 'site_id' in record:
 342                 site_ids.append(record['site_id'])
 343             if 'site_ids' in records:
 344                 site_ids.extend(record['site_ids'])
 345             if 'person_ids' in record:
 346                 person_ids.extend(record['person_ids'])
 347             if 'slice_ids' in record:
 348                 slice_ids.extend(record['slice_ids'])
 349             if 'node_ids' in record:
 350                 node_ids.extend(record['node_ids'])
 351
 352         # get pl records
 353         slices, persons, sites, nodes = {}, {}, {}, {}
 354         if site_ids:
 355             site_list = self.plshell.GetSites(self.plauth, site_ids, ['site_id', 'login_base'])
 356             sites = list_to_dict(site_list, 'site_id')
 357         if person_ids:
 358             person_list = self.plshell.GetPersons(self.plauth, person_ids, ['person_id', 'email'])
 359             persons = list_to_dict(person_list, 'person_id')
 360         if slice_ids:
 361             slice_list = self.plshell.GetSlices(self.plauth, slice_ids, ['slice_id', 'name'])
 362             slices = list_to_dict(slice_list, 'slice_id')
 363         if node_ids:
 364             node_list = self.plshell.GetNodes(self.plauth, node_ids, ['node_id', 'hostname'])
 365             nodes = list_to_dict(node_list, 'node_id')
 366
 367         # convert ids to hrns
 368         for record in records:
 369
 370             # get all relevant data
 371             type = record['type']
 372             pointer = record['pointer']
 373             auth_hrn = self.hrn
 374             login_base = ''
 375             if pointer == -1:
 376                 continue
 377
 378             if 'site_id' in record:
 379                 site = sites[record['site_id']]
 380                 login_base = site['login_base']
 381                 record['site'] = ".".join([auth_hrn, login_base])
 382             if 'person_ids' in record:
 383                 emails = [persons[person_id]['email'] for person_id in record['person_ids'] \
 384                           if person_id in  persons]
 385                 usernames = [email.split('@')[0] for email in emails]
 386                 person_hrns = [".".join([auth_hrn, login_base, username]) for username in usernames]
 387                 record['persons'] = person_hrns
 388             if 'slice_ids' in record:
 389                 slicenames = [slices[slice_id]['name'] for slice_id in record['slice_ids'] \
 390                               if slice_id in slices]
 391                 slice_hrns = [slicename_to_hrn(auth_hrn, slicename) for slicename in slicenames]
 392                 record['slices'] = slice_hrns
 393             if 'node_ids' in record:
 394                 hostnames = [nodes[node_id]['hostname'] for node_id in record['node_ids'] \
 395                              if node_id in nodes]
 396                 node_hrns = [hostname_to_hrn(auth_hrn, login_base, hostname) for hostname in hostnames]
 397                 record['nodes'] = node_hrns
 398             if 'site_ids' in record:
 399                 login_bases = [sites[site_id]['login_base'] for site_id in record['site_ids'] \
 400                                if site_id in sites]
 401                 site_hrns = [".".join([auth_hrn, lbase]) for lbase in login_bases]
 402                 record['sites'] = site_hrns
 403
 404         return records
 405
 406     def fill_record_sfa_info(self, records):
 407
 408         def startswith(prefix, values):
 409             return [value for value in values if value.startswith(prefix)]
 410
 411         # get person ids
 412         person_ids = []
 413         site_ids = []
 414         for record in records:
 415             person_ids.extend(record.get("person_ids", []))
 416             site_ids.extend(record.get("site_ids", []))
 417             if 'site_id' in record:
 418                 site_ids.append(record['site_id'])
 419
 420         # get all pis from the sites we've encountered
 421         # and store them in a dictionary keyed on site_id
 422         site_pis = {}
 423         if site_ids:
 424             pi_filter = {'|roles': ['pi'], '|site_ids': site_ids}
 425             pi_list = self.plshell.GetPersons(self.plauth, pi_filter, ['person_id', 'site_ids'])
 426             for pi in pi_list:
 427                 # we will need the pi's hrns also
 428                 person_ids.append(pi['person_id'])
 429
 430                 # we also need to keep track of the sites these pis
 431                 # belong to
 432                 for site_id in pi['site_ids']:
 433                     if site_id in site_pis:
 434                         site_pis[site_id].append(pi)
 435                     else:
 436                         site_pis[site_id] = [pi]
 437
 438         # get sfa records for all records associated with these records.
 439         # we'll replace pl ids (person_ids) with hrns from the sfa records
 440         # we obtain
 441
 442         # get the sfa records
 443         table = self.SfaTable()
 444         person_list, persons = [], {}
 445         person_list = table.find({'type': 'user', 'pointer': person_ids})
 446         # create a hrns keyed on the sfa record's pointer.
 447         # Its possible for  multiple records to have the same pointer so
 448         # the dict's value will be a list of hrns.
 449         persons = defaultdict(list)
 450         for person in person_list:
 451             persons[person['pointer']].append(person)
 452
 453         # get the pl records
 454         pl_person_list, pl_persons = [], {}
 455         pl_person_list = self.plshell.GetPersons(self.plauth, person_ids, ['person_id', 'roles'])
 456         pl_persons = list_to_dict(pl_person_list, 'person_id')
 457
 458         # fill sfa info
 459         for record in records:
 460             # skip records with no pl info (top level authorities)
 461             if record['pointer'] == -1:
 462                 continue
 463             sfa_info = {}
 464             type = record['type']
 465             if (type == "slice"):
 466                 # all slice users are researchers
 467                 record['PI'] = []
 468                 record['researcher'] = []
 469                 for person_id in record['person_ids']:
 470                     hrns = [person['hrn'] for person in persons[person_id]]
 471                     record['researcher'].extend(hrns)
 472
 473                 # pis at the slice's site
 474                 pl_pis = site_pis[record['site_id']]
 475                 pi_ids = [pi['person_id'] for pi in pl_pis]
 476                 for person_id in pi_ids:
 477                     hrns = [person['hrn'] for person in persons[person_id]]
 478                     record['PI'].extend(hrns)
 479
 480             elif (type == "authority"):
 481                 record['PI'] = []
 482                 record['operator'] = []
 483                 record['owner'] = []
 484                 for pointer in record['person_ids']:
 485                     if pointer not in persons or pointer not in pl_persons:
 486                         # this means there is not sfa or pl record for this user
 487                         continue
 488                     hrns = [person['hrn'] for person in persons[pointer]]
 489                     roles = pl_persons[pointer]['roles']
 490                     if 'pi' in roles:
 491                         record['PI'].extend(hrns)
 492                     if 'tech' in roles:
 493                         record['operator'].extend(hrns)
 494                     if 'admin' in roles:
 495                         record['owner'].extend(hrns)
 496                     # xxx TODO: OrganizationName
 497             elif (type == "node"):
 498                 sfa_info['dns'] = record.get("hostname", "")
 499                 # xxx TODO: URI, LatLong, IP, DNS
 500
 501             elif (type == "user"):
 502                 sfa_info['email'] = record.get("email", "")
 503                 # xxx TODO: PostalAddress, Phone
 504             record.update(sfa_info)
 505
 506     def fill_record_info(self, records):
 507         """
 508         Given a SFA record, fill in the PLC specific and SFA specific
 509         fields in the record.
 510         """
 511         if not isinstance(records, list):
 512             records = [records]
 513
 514         self.fill_record_pl_info(records)
 515         self.fill_record_sfa_info(records)
 516
 517     def update_membership_list(self, oldRecord, record, listName, addFunc, delFunc):
 518         # get a list of the HRNs tht are members of the old and new records
 519         if oldRecord:
 520             oldList = oldRecord.get(listName, [])
 521         else:
 522             oldList = []
 523         newList = record.get(listName, [])
 524
 525         # if the lists are the same, then we don't have to update anything
 526         if (oldList == newList):
 527             return
 528
 529         # build a list of the new person ids, by looking up each person to get
 530         # their pointer
 531         newIdList = []
 532         table = self.SfaTable()
 533         records = table.find({'type': 'user', 'hrn': newList})
 534         for rec in records:
 535             newIdList.append(rec['pointer'])
 536
 537         # build a list of the old person ids from the person_ids field
 538         if oldRecord:
 539             oldIdList = oldRecord.get("person_ids", [])
 540             containerId = oldRecord.get_pointer()
 541         else:
 542             # if oldRecord==None, then we are doing a Register, instead of an
 543             # update.
 544             oldIdList = []
 545             containerId = record.get_pointer()
 546
 547     # add people who are in the new list, but not the oldList
 548         for personId in newIdList:
 549             if not (personId in oldIdList):
 550                 addFunc(self.plauth, personId, containerId)
 551
 552         # remove people who are in the old list, but not the new list
 553         for personId in oldIdList:
 554             if not (personId in newIdList):
 555                 delFunc(self.plauth, personId, containerId)
 556
 557     def update_membership(self, oldRecord, record):
 558         if record.type == "slice":
 559             self.update_membership_list(oldRecord, record, 'researcher',
 560                                         self.plshell.AddPersonToSlice,
 561                                         self.plshell.DeletePersonFromSlice)
 562         elif record.type == "authority":
 563             # xxx TODO
 564             pass
 565
 566
 567
 568 class ComponentAPI(BaseAPI):
 569
 570     def __init__(self, config = "/etc/sfa/sfa_config.py", encoding = "utf-8", methods='sfa.methods',
 571                  peer_cert = None, interface = None, key_file = None, cert_file = None):
 572
 573         BaseAPI.__init__(self, config=config, encoding=encoding, methods=methods, peer_cert=peer_cert,
 574                          interface=interface, key_file=key_file, cert_file=cert_file)
 575         self.encoding = encoding
 576
 577         # Better just be documenting the API
 578         if config is None:
 579             return
 580
 581         self.nodemanager = NodeManager(self.config)
 582
 583     def sliver_exists(self):
 584         sliver_dict = self.nodemanager.GetXIDs()
 585         if slicename in sliver_dict.keys():
 586             return True
 587         else:
 588             return False