registry/registry.py

   1 ##
   2 # Geni Registry Wrapper
   3 #
   4 # This wrapper implements the Geni Registry
   5 ##
   6
   7 import tempfile
   8 import os
   9 import time
  10 import sys
  11
  12 from cert import *
  13 from gid import *
  14 from geniserver import *
  15 from excep import *
  16 from trustedroot import *
  17 from hierarchy import *
  18 from misc import *
  19 from record import *
  20 from genitable import *
  21 from geniticket import *
  22
  23 ##
  24 # Convert geni fields to PLC fields for use when registering up updating
  25 # registry record in the PLC database
  26 #
  27 # @params type type of record (user, slice, ...)
  28 # @params hrn human readable name
  29 # @params geni_fields dictionary of geni fields
  30 # @params pl_fields dictionary of PLC fields (output)
  31
  32 def geni_fields_to_pl_fields(type, hrn, geni_fields, pl_fields):
  33     if type == "user":
  34         if not "email" in pl_fields:
  35             if not "email" in geni_fields:
  36                 raise MissingGeniInfo("email")
  37             pl_fields["email"] = geni_fields["email"]
  38
  39         if not "first_name" in pl_fields:
  40             pl_fields["first_name"] = "geni"
  41
  42         if not "last_name" in pl_fields:
  43             pl_fields["last_name"] = hrn
  44
  45     elif type == "slice":
  46         if not "instantiation" in pl_fields:
  47             pl_fields["instantiation"] = "plc-instantiated"
  48         if not "name" in pl_fields:
  49             pl_fields["name"] = hrn_to_pl_slicename(hrn)
  50         if not "max_nodes" in pl_fields:
  51             pl_fields["max_nodes"] = 10
  52
  53     elif type == "node":
  54         if not "hostname" in pl_fields:
  55             if not "dns" in geni_fields:
  56                 raise MissingGeniInfo("dns")
  57             pl_fields["hostname"] = geni_fields["dns"]
  58
  59         if not "model" in pl_fields:
  60             pl_fields["model"] = "geni"
  61
  62     elif type == "sa":
  63         pl_fields["login_base"] = hrn_to_pl_login_base(hrn)
  64
  65         if not "name" in pl_fields:
  66             pl_fields["name"] = hrn
  67
  68         if not "abbreviated_name" in pl_fields:
  69             pl_fields["abbreviated_name"] = hrn
  70
  71         if not "enabled" in pl_fields:
  72             pl_fields["enabled"] = True
  73
  74         if not "is_public" in pl_fields:
  75             pl_fields["is_public"] = True
  76
  77 ##
  78 # Registry is a GeniServer that serves registry requests. It also serves
  79 # component and slice operations that are implemented on the registry
  80 # due to SFA engineering decisions
  81 #
  82
  83 class Registry(GeniServer):
  84     def __init__(self, ip, port, key_file, cert_file):
  85         GeniServer.__init__(self, ip, port, key_file, cert_file)
  86
  87         # get PL account settings from config module
  88         self.pl_auth = get_pl_auth()
  89
  90         # connect to planetlab
  91         if "Url" in self.pl_auth:
  92             self.connect_remote_shell()
  93         else:
  94             self.connect_local_shell()
  95
  96     ##
  97     # Connect to a remote shell via XMLRPC
  98
  99     def connect_remote_shell(self):
 100         import remoteshell
 101         self.shell = remoteshell.RemoteShell()
 102
 103     ##
 104     # Connect to a local shell via local API functions
 105
 106     def connect_local_shell(self):
 107         import PLC.Shell
 108         self.shell = PLC.Shell.Shell(globals = globals())
 109
 110     ##
 111     # Register the server RPCs for the registry
 112
 113     def register_functions(self):
 114         GeniServer.register_functions(self)
 115         # registry interface
 116         self.server.register_function(self.create_gid)
 117         self.server.register_function(self.get_self_credential)
 118         self.server.register_function(self.get_credential)
 119         self.server.register_function(self.get_gid)
 120         self.server.register_function(self.register)
 121         self.server.register_function(self.remove)
 122         self.server.register_function(self.update)
 123         self.server.register_function(self.list)
 124         self.server.register_function(self.resolve)
 125         # component interface
 126         self.server.register_function(self.get_ticket)
 127
 128     ##
 129     # Given an authority name, return the information for that authority. This
 130     # is basically a stub that calls the hierarchy module.
 131     #
 132     # @param auth_hrn human readable name of authority
 133
 134     def get_auth_info(self, auth_hrn):
 135         return AuthHierarchy.get_auth_info(auth_hrn)
 136
 137     ##
 138     # Given an authority name, return the database table for that authority. If
 139     # the database table does not exist, then one will be automatically
 140     # created.
 141     #
 142     # @param auth_name human readable name of authority
 143
 144     def get_auth_table(self, auth_name):
 145         auth_info = self.get_auth_info(auth_name)
 146
 147         table = GeniTable(hrn=auth_name,
 148                           cninfo=auth_info.get_dbinfo())
 149
 150         # if the table doesn't exist, then it means we haven't put any records
 151         # into this authority yet.
 152
 153         if not table.exists():
 154             report.trace("Registry: creating table for authority " + auth_name)
 155             table.create()
 156
 157         return table
 158
 159     ##
 160     # Verify that an authority belongs to this registry. This is basically left
 161     # up to the implementation of the hierarchy module. If the specified name
 162     # does not belong to this registry, an exception is thrown indicating the
 163     # caller should contact someone else.
 164     #
 165     # @param auth_name human readable name of authority
 166
 167     def verify_auth_belongs_to_me(self, name):
 168         # get_auth_info will throw an exception if the authority does not
 169         # exist
 170         self.get_auth_info(name)
 171
 172     ##
 173     # Verify that an object belongs to this registry. By extension, this implies
 174     # that the authority that owns the object belongs to this registry. If the
 175     # object does not belong to this registry, then an exception is thrown.
 176     #
 177     # @param name human readable name of object
 178
 179     def verify_object_belongs_to_me(self, name):
 180         auth_name = get_authority(name)
 181         if not auth_name:
 182             # the root authority belongs to the registry by default?
 183             # TODO: is this true?
 184             return
 185         self.verify_auth_belongs_to_me(auth_name)
 186
 187     ##
 188     # Verify that the object_gid that was specified in the credential allows
 189     # permission to the object 'name'. This is done by a simple prefix test.
 190     # For example, an object_gid for planetlab.us.arizona would match the
 191     # objects planetlab.us.arizona.slice1 and planetlab.us.arizona.
 192     #
 193     # @param name human readable name to test
 194
 195     def verify_object_permission(self, name):
 196         object_hrn = self.object_gid.get_hrn()
 197         if object_hrn == name:
 198             return
 199         if name.startswith(object_hrn + "."):
 200             return
 201         raise PermissionError(name)
 202
 203     ##
 204     # Fill in the planetlab-specific fields of a Geni record. This involves
 205     # calling the appropriate PLC methods to retrieve the database record for
 206     # the object.
 207     #
 208     # PLC data is filled into the pl_info field of the record.
 209     #
 210     # @param record record to fill in fields (in/out param)
 211
 212     def fill_record_pl_info(self, record):
 213         type = record.get_type()
 214         pointer = record.get_pointer()
 215
 216         # records with pointer==-1 do not have plc info associated with them.
 217         # for example, the top level authority records which are
 218         # authorities, but not PL "sites"
 219         if pointer == -1:
 220             return
 221
 222         if (type == "sa") or (type == "ma"):
 223             pl_res = self.shell.GetSites(self.pl_auth, [pointer])
 224         elif (type == "slice"):
 225             pl_res = self.shell.GetSlices(self.pl_auth, [pointer])
 226         elif (type == "user"):
 227             pl_res = self.shell.GetPersons(self.pl_auth, [pointer])
 228         elif (type == "node"):
 229             pl_res = self.shell.GetNodes(self.pl_auth, [pointer])
 230         else:
 231             raise UnknownGeniType(type)
 232
 233         if not pl_res:
 234             # the planetlab record no longer exists
 235             # TODO: delete the geni record ?
 236             raise PlanetLabRecordDoesNotExist(record.get_name())
 237
 238         record.set_pl_info(pl_res[0])
 239
 240     def lookup_users(self, auth_table, user_id_list, role="*"):
 241         record_list = []
 242         for person_id in user_id_list:
 243             user_records = auth_table.find("user", person_id, "pointer")
 244             for user_record in user_records:
 245                 self.fill_record_info(user_record)
 246
 247                 user_roles = user_record.get_pl_info().get("roles")
 248                 if (role=="*") or (role in user_roles):
 249                     record_list.append(user_record.get_name())
 250         return record_list
 251
 252     ##
 253     # Fill in the geni-specific fields of the record.
 254     #
 255     # Note: It is assumed the fill_record_pl_info() has already been performed
 256     # on the record.
 257
 258     def fill_record_geni_info(self, record):
 259         geni_info = {}
 260         type = record.get_type()
 261
 262         if (type == "slice"):
 263             auth_table = self.get_auth_table(get_authority(record.get_name()))
 264             person_ids = record.pl_info.get("person_ids", [])
 265             researchers = self.lookup_users(auth_table, person_ids)
 266             geni_info['researcher'] = researchers
 267
 268         elif (type == "sa"):
 269             auth_table = self.get_auth_table(record.get_name())
 270             person_ids = record.pl_info.get("person_ids", [])
 271             pis = self.lookup_users(auth_table, person_ids, "pi")
 272             geni_info['pi'] = pis
 273
 274         elif (type == "ma"):
 275             auth_table = self.get_auth_table(record.get_name())
 276             person_ids = record.pl_info.get("person_ids", [])
 277             operators = self.lookup_users(auth_table, person_ids, "tech")
 278             geni_info['operator'] = operators
 279
 280             auth_table = self.get_auth_table(record.get_name())
 281             person_ids = record.pl_info.get("person_ids", [])
 282             owners = self.lookup_users(auth_table, person_ids, "admin")
 283             geni_info['owner'] = owners
 284             pass
 285
 286         record.set_geni_info(geni_info)
 287
 288     def fill_record_info(self, record):
 289         self.fill_record_pl_info(record)
 290         self.fill_record_geni_info(record)
 291
 292     def register(self, cred, record_dict):
 293         self.decode_authentication(cred, "register")
 294
 295         record = GeniRecord(dict = record_dict)
 296         type = record.get_type()
 297         name = record.get_name()
 298
 299         auth_name = get_authority(name)
 300         self.verify_object_permission(auth_name)
 301         auth_info = self.get_auth_info(auth_name)
 302         table = self.get_auth_table(auth_name)
 303
 304         pkey = None
 305
 306         # check if record already exists
 307         existing_records = table.resolve(type, name)
 308         if existing_records:
 309             raise ExistingRecord(name)
 310
 311         if (type == "sa") or (type=="ma"):
 312             # update the tree
 313             if not AuthHierarchy.auth_exists(name):
 314                 AuthHierarchy.create_auth(name)
 315
 316             # authorities are special since they are managed by the registry
 317             # rather than by the caller. We create our own GID for the
 318             # authority rather than relying on the caller to supply one.
 319
 320             # get the GID from the newly created authority
 321             child_auth_info = self.get_auth_info(name)
 322             gid = auth_info.get_gid_object()
 323             record.set_gid(gid.save_to_string(save_parents=True))
 324
 325             geni_fields = record.get_geni_info()
 326             site_fields = record.get_pl_info()
 327
 328             # if registering a sa, see if a ma already exists
 329             # if registering a ma, see if a sa already exists
 330             if (type == "sa"):
 331                 other_rec = table.resolve("ma", record.get_name())
 332             elif (type == "ma"):
 333                 other_rec = table.resolve("sa", record.get_name())
 334
 335             if other_rec:
 336                 print "linking ma and sa to the same plc site"
 337                 pointer = other_rec[0].get_pointer()
 338             else:
 339                 geni_fields_to_pl_fields(type, name, geni_fields, site_fields)
 340                 print "adding site with fields", site_fields
 341                 pointer = self.shell.AddSite(self.pl_auth, site_fields)
 342
 343             record.set_pointer(pointer)
 344
 345         elif (type == "slice"):
 346             geni_fields = record.get_geni_info()
 347             slice_fields = record.get_pl_info()
 348
 349             geni_fields_to_pl_fields(type, name, geni_fields, slice_fields)
 350
 351             pointer = self.shell.AddSlice(self.pl_auth, slice_fields)
 352             record.set_pointer(pointer)
 353
 354         elif (type == "user"):
 355             geni_fields = record.get_geni_info()
 356             user_fields = record.get_pl_info()
 357
 358             geni_fields_to_pl_fields(type, name, geni_fields, user_fields)
 359
 360             pointer = self.shell.AddPerson(self.pl_auth, user_fields)
 361             record.set_pointer(pointer)
 362
 363         elif (type == "node"):
 364             geni_fields = record.get_geni_info()
 365             node_fields = record.get_pl_info()
 366
 367             geni_fields_to_pl_fields(type, name, geni_fields, node_fields)
 368
 369             login_base = hrn_to_pl_login_base(auth_name)
 370
 371             print "calling addnode with", login_base, node_fields
 372             pointer = self.shell.AddNode(self.pl_auth, login_base, node_fields)
 373             record.set_pointer(pointer)
 374
 375         else:
 376             raise UnknownGeniType(type)
 377
 378         table.insert(record)
 379
 380         return record.get_gid_object().save_to_string(save_parents=True)
 381
 382     def remove(self, cred, record_dict):
 383         self.decode_authentication(cred, "remove")
 384
 385         record = GeniRecord(dict = record_dict)
 386         type = record.get_type()
 387
 388         self.verify_object_permission(record.get_name())
 389
 390         auth_name = get_authority(record.get_name())
 391         table = self.get_auth_table(auth_name)
 392
 393         # let's not trust that the caller has a well-formed record (a forged
 394         # pointer field could be a disaster), so look it up ourselves
 395         record_list = table.resolve(type, record.get_name())
 396         if not record_list:
 397             raise RecordNotFound(name)
 398         record = record_list[0]
 399
 400         # TODO: sa, ma
 401         if type == "user":
 402             self.shell.DeletePerson(self.pl_auth, record.get_pointer())
 403         elif type == "slice":
 404             self.shell.DeleteSlice(self.pl_auth, record.get_pointer())
 405         elif type == "node":
 406             self.shell.DeleteNode(self.pl_auth, record.get_pointer())
 407         elif (type == "sa") or (type == "ma"):
 408             if (type == "sa"):
 409                 other_rec = table.resolve("ma", record.get_name())
 410             elif (type == "ma"):
 411                 other_rec = table.resolve("sa", record.get_name())
 412
 413             if other_rec:
 414                 # sa and ma both map to a site, so if we are deleting one
 415                 # but the other still exists, then do not delete the site
 416                 print "not removing site", record.get_name(), "because either sa or ma still exists"
 417                 pass
 418             else:
 419                 print "removing site", record.get_name()
 420                 self.shell.DeleteSite(self.pl_auth, record.get_pointer())
 421         else:
 422             raise UnknownGeniType(type)
 423
 424         table.remove(record)
 425
 426         return True
 427
 428     def update(self, cred, record_dict):
 429         self.decode_authentication(cred, "update")
 430
 431         record = GeniRecord(dict = record_dict)
 432         type = record.get_type()
 433
 434         self.verify_object_permission(record.get_name())
 435
 436         auth_name = get_authority(record.get_name())
 437         table = self.get_auth_table(auth_name)
 438
 439         # make sure the record exists
 440         existing_record_list = table.resolve(type, record.get_name())
 441         if not existing_record_list:
 442             raise RecordNotFound(record.get_name())
 443
 444         existing_record = existing_record_list[0]
 445         pointer = existing_record.get_pointer()
 446
 447         if (type == "sa") or (type == "ma"):
 448             self.shell.UpdateSite(self.pl_auth, pointer, record.get_pl_info())
 449
 450         elif type == "slice":
 451             self.shell.UpdateSlice(self.pl_auth, pointer, record.get_pl_info())
 452
 453         elif type == "user":
 454             self.shell.UpdatePerson(self.pl_auth, pointer, record.get_pl_info())
 455
 456         elif type == "node":
 457             self.shell.UpdateNode(self.pl_auth, pointer, record.get_pl_info())
 458
 459         else:
 460             raise UnknownGeniType(type)
 461
 462     # TODO: List doesn't take an hrn and uses the hrn contained in the
 463     #    objectGid of the credential. Does this mean the only way to list an
 464     #    authority is by having a credential for that authority?
 465     def list(self, cred):
 466         self.decode_authentication(cred, "list")
 467
 468         auth_name = self.object_gid.get_hrn()
 469         table = self.get_auth_table(auth_name)
 470
 471         records = table.list()
 472
 473         good_records = []
 474         for record in records:
 475             try:
 476                 self.fill_record_info(record)
 477                 good_records.append(record)
 478             except PlanetLabRecordDoesNotExist:
 479                 # silently drop the ones that are missing in PL.
 480                 # is this the right thing to do?
 481                 report.error("ignoring geni record " + record.get_name() + " because pl record does not exist")
 482                 table.remove(record)
 483
 484         dicts = []
 485         for record in good_records:
 486             dicts.append(record.as_dict())
 487
 488         return dicts
 489
 490         return dict_list
 491
 492     def resolve_raw(self, type, name, must_exist=True):
 493         auth_name = get_authority(name)
 494
 495         table = self.get_auth_table(auth_name)
 496
 497         records = table.resolve(type, name)
 498
 499         if (not records) and must_exist:
 500             raise RecordNotFound(name)
 501
 502         good_records = []
 503         for record in records:
 504             try:
 505                 self.fill_record_info(record)
 506                 good_records.append(record)
 507             except PlanetLabRecordDoesNotExist:
 508                 # silently drop the ones that are missing in PL.
 509                 # is this the right thing to do?
 510                 report.error("ignoring geni record " + record.get_name() + " because pl record does not exist")
 511                 table.remove(record)
 512
 513         return good_records
 514
 515     def resolve(self, cred, name):
 516         self.decode_authentication(cred, "resolve")
 517
 518         records = self.resolve_raw("*", name)
 519         dicts = []
 520         for record in records:
 521             dicts.append(record.as_dict())
 522
 523         return dicts
 524
 525     def get_gid(self, name):
 526         self.verify_object_belongs_to_me(name)
 527         records = self.resolve_raw("*", name)
 528         gid_string_list = []
 529         for record in records:
 530             gid = record.get_gid()
 531             gid_string_list.append(gid.save_to_string(save_parents=True))
 532         return gid_string_list
 533
 534     def determine_rights(self, type, name):
 535         rl = RightList()
 536
 537         # rights seem to be somewhat redundant with the type of the credential.
 538         # For example, a "sa" credential implies the authority right, because
 539         # a sa credential cannot be issued to a user who is not an owner of
 540         # the authority
 541
 542         if type == "user":
 543             rl.add("refresh")
 544             rl.add("resolve")
 545             rl.add("info")
 546         elif type == "sa":
 547             rl.add("authority")
 548         elif type == "ma":
 549             rl.add("authority")
 550         elif type == "slice":
 551             rl.add("embed")
 552             rl.add("bind")
 553             rl.add("control")
 554             rl.add("info")
 555         elif type == "component":
 556             rl.add("operator")
 557
 558         return rl
 559
 560
 561     def get_self_credential(self, type, name):
 562         self.verify_object_belongs_to_me(name)
 563
 564         auth_hrn = get_authority(name)
 565         auth_info = self.get_auth_info(auth_hrn)
 566
 567         # find a record that matches
 568         records = self.resolve_raw(type, name, must_exist=True)
 569         record = records[0]
 570
 571         gid = record.get_gid_object()
 572         peer_cert = self.server.peer_cert
 573         if not peer_cert.is_pubkey(gid.get_pubkey()):
 574            raise ConnectionKeyGIDMismatch(gid.get_subject())
 575
 576         # create the credential
 577         gid = record.get_gid_object()
 578         cred = Credential(subject = gid.get_subject())
 579         cred.set_gid_caller(gid)
 580         cred.set_gid_object(gid)
 581         cred.set_issuer(key=auth_info.get_pkey_object(), subject=auth_hrn)
 582         cred.set_pubkey(gid.get_pubkey())
 583
 584         rl = self.determine_rights(type, name)
 585         cred.set_privileges(rl)
 586
 587         cred.set_parent(AuthHierarchy.get_auth_cred(auth_hrn))
 588
 589         cred.encode()
 590         cred.sign()
 591
 592         return cred.save_to_string(save_parents=True)
 593
 594     def get_credential(self, cred, type, name):
 595         if not cred:
 596             return get_self_credential(self, type, name)
 597
 598         self.decode_authentication(cred, "getcredential")
 599
 600         self.verify_object_belongs_to_me(name)
 601
 602         auth_hrn = get_authority(name)
 603         auth_info = self.get_auth_info(auth_hrn)
 604
 605         records = self.resolve_raw(type, name, must_exist=True)
 606         record = records[0]
 607
 608         # TODO: Check permission that self.client_cred can access the object
 609
 610         object_gid = record.get_gid_object()
 611         new_cred = Credential(subject = object_gid.get_subject())
 612         new_cred.set_gid_caller(self.client_gid)
 613         new_cred.set_gid_object(object_gid)
 614         new_cred.set_issuer(key=auth_info.get_pkey_object(), subject=auth_hrn)
 615         new_cred.set_pubkey(object_gid.get_pubkey())
 616
 617         rl = self.determine_rights(type, name)
 618         new_cred.set_privileges(rl)
 619
 620         new_cred.set_parent(AuthHierarchy.get_auth_cred(auth_hrn))
 621
 622         new_cred.encode()
 623         new_cred.sign()
 624
 625         return new_cred.save_to_string(save_parents=True)
 626
 627     def create_gid(self, cred, name, uuid, pubkey_str):
 628         self.decode_authentication(cred, "getcredential")
 629
 630         self.verify_object_belongs_to_me(name)
 631
 632         self.verify_object_permission(name)
 633
 634         if uuid == None:
 635             uuid = create_uuid()
 636
 637         pkey = Keypair()
 638         pkey.load_pubkey_from_string(pubkey_str)
 639         gid = AuthHierarchy.create_gid(name, uuid, pkey)
 640
 641         return gid.save_to_string(save_parents=True)
 642
 643     # ------------------------------------------------------------------------
 644     # Component Interface
 645
 646     def record_to_slice_info(self, record):
 647
 648         # get the user keys from the slice
 649         keys = []
 650         persons = self.shell.GetPersons(self.pl_auth, record.pl_info['person_ids'])
 651         for person in persons:
 652             person_keys = self.shell.GetKeys(self.pl_auth, person["key_ids"])
 653             for person_key in person_keys:
 654                 keys = keys + [person_key['key']]
 655
 656         attributes={}
 657         attributes['name'] = record.pl_info['name']
 658         attributes['keys'] = keys
 659         attributes['instantiation'] = record.pl_info['instantiation']
 660         attributes['vref'] = 'default'
 661         attributes['timestamp'] = time.time()
 662
 663         rspec = {}
 664
 665         # get the PLC attributes and separate them into slice attributes and
 666         # rspec attributes
 667         filter = {}
 668         filter['slice_id'] = record.pl_info['slice_id']
 669         plc_attrs = self.shell.GetSliceAttributes(self.pl_auth, filter)
 670         for attr in plc_attrs:
 671             name = attr['name']
 672
 673             # initscripts: lookup the contents of the initscript and store it
 674             # in the ticket attributes
 675             if (name == "initscript"):
 676                 filter={'name': attr['value']}
 677                 initscripts = self.shell.GetInitScripts(self.pl_auth, filter)
 678                 if initscripts:
 679                     attributes['initscript'] = initscripts[0]['script']
 680             else:
 681                 rspec[name] = attr['value']
 682
 683         return (attributes, rspec)
 684
 685
 686     def get_ticket(self, cred, name, rspec):
 687         self.decode_authentication(cred, "getticket")
 688
 689         self.verify_object_belongs_to_me(name)
 690
 691         self.verify_object_permission(name)
 692
 693         # XXX much of this code looks like get_credential... are they so similar
 694         # that they should be combined?
 695
 696         auth_hrn = get_authority(name)
 697         auth_info = self.get_auth_info(auth_hrn)
 698
 699         records = self.resolve_raw("slice", name, must_exist=True)
 700         record = records[0]
 701
 702         object_gid = record.get_gid_object()
 703         new_ticket = Ticket(subject = object_gid.get_subject())
 704         new_ticket.set_gid_caller(self.client_gid)
 705         new_ticket.set_gid_object(object_gid)
 706         new_ticket.set_issuer(key=auth_info.get_pkey_object(), subject=auth_hrn)
 707         new_ticket.set_pubkey(object_gid.get_pubkey())
 708
 709         self.fill_record_info(record)
 710
 711         (attributes, rspec) = self.record_to_slice_info(record)
 712
 713         new_ticket.set_attributes(attributes)
 714         new_ticket.set_rspec(rspec)
 715
 716         new_ticket.set_parent(AuthHierarchy.get_auth_ticket(auth_hrn))
 717
 718         new_ticket.encode()
 719         new_ticket.sign()
 720
 721         return new_ticket.save_to_string(save_parents=True)
 722
 723
 724 if __name__ == "__main__":
 725     global AuthHierarchy
 726     global TrustedRoots
 727
 728     key_file = "server.key"
 729     cert_file = "server.cert"
 730
 731     # if no key is specified, then make one up
 732     if (not os.path.exists(key_file)) or (not os.path.exists(cert_file)):
 733         key = Keypair(create=True)
 734         key.save_to_file(key_file)
 735
 736         cert = Certificate(subject="registry")
 737         cert.set_issuer(key=key, subject="registry")
 738         cert.set_pubkey(key)
 739         cert.sign()
 740         cert.save_to_file(cert_file)
 741
 742     AuthHierarchy = Hierarchy()
 743
 744     TrustedRoots = TrustedRootList()
 745
 746     s = Registry("", 12345, key_file, cert_file)
 747     s.trusted_cert_list = TrustedRoots.get_list()
 748     s.run()
 749