src/allmydata/test/common.py

   1 import os, random, struct
   2 from zope.interface import implements
   3 from twisted.internet import defer
   4 from twisted.internet.interfaces import IPullProducer
   5 from twisted.python import failure
   6 from twisted.application import service
   7 from twisted.web.error import Error as WebError
   8 from foolscap.api import flushEventualQueue, fireEventually
   9 from allmydata import uri, dirnode, client
  10 from allmydata.introducer.server import IntroducerNode
  11 from allmydata.interfaces import IMutableFileNode, IImmutableFileNode, \
  12      FileTooLargeError, NotEnoughSharesError, ICheckable
  13 from allmydata.check_results import CheckResults, CheckAndRepairResults, \
  14      DeepCheckResults, DeepCheckAndRepairResults
  15 from allmydata.mutable.common import CorruptShareError
  16 from allmydata.mutable.layout import unpack_header
  17 from allmydata.storage.mutable import MutableShareFile
  18 from allmydata.util import hashutil, log, fileutil, pollmixin
  19 from allmydata.util.assertutil import precondition
  20 from allmydata.stats import StatsGathererService
  21 from allmydata.key_generator import KeyGeneratorService
  22 import allmydata.test.common_util as testutil
  23 from allmydata import immutable
  24
  25
  26 def flush_but_dont_ignore(res):
  27     d = flushEventualQueue()
  28     def _done(ignored):
  29         return res
  30     d.addCallback(_done)
  31     return d
  32
  33 class DummyProducer:
  34     implements(IPullProducer)
  35     def resumeProducing(self):
  36         pass
  37
  38 class FakeCHKFileNode:
  39     """I provide IImmutableFileNode, but all of my data is stored in a
  40     class-level dictionary."""
  41     implements(IImmutableFileNode)
  42     all_contents = {}
  43     bad_shares = {}
  44
  45     def __init__(self, filecap):
  46         precondition(isinstance(filecap, (uri.CHKFileURI, uri.LiteralFileURI)), filecap)
  47         self.my_uri = filecap
  48         self.storage_index = self.my_uri.get_storage_index()
  49
  50     def get_uri(self):
  51         return self.my_uri.to_string()
  52     def get_write_uri(self):
  53         return None
  54     def get_readonly_uri(self):
  55         return self.my_uri.to_string()
  56     def get_cap(self):
  57         return self.my_uri
  58     def get_verify_cap(self):
  59         return self.my_uri.get_verify_cap()
  60     def get_repair_cap(self):
  61         return self.my_uri.get_verify_cap()
  62     def get_storage_index(self):
  63         return self.storage_index
  64
  65     def check(self, monitor, verify=False, add_lease=False):
  66         r = CheckResults(self.my_uri, self.storage_index)
  67         is_bad = self.bad_shares.get(self.storage_index, None)
  68         data = {}
  69         data["count-shares-needed"] = 3
  70         data["count-shares-expected"] = 10
  71         data["count-good-share-hosts"] = 10
  72         data["count-wrong-shares"] = 0
  73         nodeid = "\x00"*20
  74         data["list-corrupt-shares"] = []
  75         data["sharemap"] = {1: [nodeid]}
  76         data["servers-responding"] = [nodeid]
  77         data["count-recoverable-versions"] = 1
  78         data["count-unrecoverable-versions"] = 0
  79         if is_bad:
  80             r.set_healthy(False)
  81             r.set_recoverable(True)
  82             data["count-shares-good"] = 9
  83             data["list-corrupt-shares"] = [(nodeid, self.storage_index, 0)]
  84             r.problems = failure.Failure(CorruptShareError(is_bad))
  85         else:
  86             r.set_healthy(True)
  87             r.set_recoverable(True)
  88             data["count-shares-good"] = 10
  89             r.problems = []
  90         r.set_data(data)
  91         r.set_needs_rebalancing(False)
  92         return defer.succeed(r)
  93     def check_and_repair(self, monitor, verify=False, add_lease=False):
  94         d = self.check(verify)
  95         def _got(cr):
  96             r = CheckAndRepairResults(self.storage_index)
  97             r.pre_repair_results = r.post_repair_results = cr
  98             return r
  99         d.addCallback(_got)
 100         return d
 101
 102     def is_mutable(self):
 103         return False
 104     def is_readonly(self):
 105         return True
 106     def is_unknown(self):
 107         return False
 108     def is_allowed_in_immutable_directory(self):
 109         return True
 110     def raise_error(self):
 111         pass
 112
 113     def get_size(self):
 114         if isinstance(self.my_uri, uri.LiteralFileURI):
 115             return self.my_uri.get_size()
 116         try:
 117             data = self.all_contents[self.my_uri.to_string()]
 118         except KeyError, le:
 119             raise NotEnoughSharesError(le, 0, 3)
 120         return len(data)
 121
 122     def read(self, consumer, offset=0, size=None):
 123         # we don't bother to call registerProducer/unregisterProducer,
 124         # because it's a hassle to write a dummy Producer that does the right
 125         # thing (we have to make sure that DummyProducer.resumeProducing
 126         # writes the data into the consumer immediately, otherwise it will
 127         # loop forever).
 128
 129         d = defer.succeed(None)
 130         d.addCallback(self._read, consumer, offset, size)
 131         return d
 132
 133     def _read(self, ignored, consumer, offset, size):
 134         if isinstance(self.my_uri, uri.LiteralFileURI):
 135             data = self.my_uri.data
 136         else:
 137             if self.my_uri.to_string() not in self.all_contents:
 138                 raise NotEnoughSharesError(None, 0, 3)
 139             data = self.all_contents[self.my_uri.to_string()]
 140         start = offset
 141         if size is not None:
 142             end = offset + size
 143         else:
 144             end = len(data)
 145         consumer.write(data[start:end])
 146         return consumer
 147
 148 def make_chk_file_cap(size):
 149     return uri.CHKFileURI(key=os.urandom(16),
 150                           uri_extension_hash=os.urandom(32),
 151                           needed_shares=3,
 152                           total_shares=10,
 153                           size=size)
 154 def make_chk_file_uri(size):
 155     return make_chk_file_cap(size).to_string()
 156
 157 def create_chk_filenode(contents):
 158     filecap = make_chk_file_cap(len(contents))
 159     n = FakeCHKFileNode(filecap)
 160     FakeCHKFileNode.all_contents[filecap.to_string()] = contents
 161     return n
 162
 163
 164 class FakeMutableFileNode:
 165     """I provide IMutableFileNode, but all of my data is stored in a
 166     class-level dictionary."""
 167
 168     implements(IMutableFileNode, ICheckable)
 169     MUTABLE_SIZELIMIT = 10000
 170     all_contents = {}
 171     bad_shares = {}
 172
 173     def __init__(self, storage_broker, secret_holder,
 174                  default_encoding_parameters, history):
 175         self.init_from_cap(make_mutable_file_cap())
 176     def create(self, contents, key_generator=None, keysize=None):
 177         initial_contents = self._get_initial_contents(contents)
 178         if len(initial_contents) > self.MUTABLE_SIZELIMIT:
 179             raise FileTooLargeError("SDMF is limited to one segment, and "
 180                                     "%d > %d" % (len(initial_contents),
 181                                                  self.MUTABLE_SIZELIMIT))
 182         self.all_contents[self.storage_index] = initial_contents
 183         return defer.succeed(self)
 184     def _get_initial_contents(self, contents):
 185         if isinstance(contents, str):
 186             return contents
 187         if contents is None:
 188             return ""
 189         assert callable(contents), "%s should be callable, not %s" % \
 190                (contents, type(contents))
 191         return contents(self)
 192     def init_from_cap(self, filecap):
 193         assert isinstance(filecap, (uri.WriteableSSKFileURI,
 194                                     uri.ReadonlySSKFileURI))
 195         self.my_uri = filecap
 196         self.storage_index = self.my_uri.get_storage_index()
 197         return self
 198     def get_cap(self):
 199         return self.my_uri
 200     def get_readcap(self):
 201         return self.my_uri.get_readonly()
 202     def get_uri(self):
 203         return self.my_uri.to_string()
 204     def get_write_uri(self):
 205         if self.is_readonly():
 206             return None
 207         return self.my_uri.to_string()
 208     def get_readonly(self):
 209         return self.my_uri.get_readonly()
 210     def get_readonly_uri(self):
 211         return self.my_uri.get_readonly().to_string()
 212     def get_verify_cap(self):
 213         return self.my_uri.get_verify_cap()
 214     def is_readonly(self):
 215         return self.my_uri.is_readonly()
 216     def is_mutable(self):
 217         return self.my_uri.is_mutable()
 218     def is_unknown(self):
 219         return False
 220     def is_allowed_in_immutable_directory(self):
 221         return not self.my_uri.is_mutable()
 222     def raise_error(self):
 223         pass
 224     def get_writekey(self):
 225         return "\x00"*16
 226     def get_size(self):
 227         return len(self.all_contents[self.storage_index])
 228     def get_current_size(self):
 229         return self.get_size_of_best_version()
 230     def get_size_of_best_version(self):
 231         return defer.succeed(len(self.all_contents[self.storage_index]))
 232
 233     def get_storage_index(self):
 234         return self.storage_index
 235
 236     def check(self, monitor, verify=False, add_lease=False):
 237         r = CheckResults(self.my_uri, self.storage_index)
 238         is_bad = self.bad_shares.get(self.storage_index, None)
 239         data = {}
 240         data["count-shares-needed"] = 3
 241         data["count-shares-expected"] = 10
 242         data["count-good-share-hosts"] = 10
 243         data["count-wrong-shares"] = 0
 244         data["list-corrupt-shares"] = []
 245         nodeid = "\x00"*20
 246         data["sharemap"] = {"seq1-abcd-sh0": [nodeid]}
 247         data["servers-responding"] = [nodeid]
 248         data["count-recoverable-versions"] = 1
 249         data["count-unrecoverable-versions"] = 0
 250         if is_bad:
 251             r.set_healthy(False)
 252             r.set_recoverable(True)
 253             data["count-shares-good"] = 9
 254             r.problems = failure.Failure(CorruptShareError("peerid",
 255                                                            0, # shnum
 256                                                            is_bad))
 257         else:
 258             r.set_healthy(True)
 259             r.set_recoverable(True)
 260             data["count-shares-good"] = 10
 261             r.problems = []
 262         r.set_data(data)
 263         r.set_needs_rebalancing(False)
 264         return defer.succeed(r)
 265
 266     def check_and_repair(self, monitor, verify=False, add_lease=False):
 267         d = self.check(verify)
 268         def _got(cr):
 269             r = CheckAndRepairResults(self.storage_index)
 270             r.pre_repair_results = r.post_repair_results = cr
 271             return r
 272         d.addCallback(_got)
 273         return d
 274
 275     def deep_check(self, verify=False, add_lease=False):
 276         d = self.check(verify)
 277         def _done(r):
 278             dr = DeepCheckResults(self.storage_index)
 279             dr.add_check(r, [])
 280             return dr
 281         d.addCallback(_done)
 282         return d
 283
 284     def deep_check_and_repair(self, verify=False, add_lease=False):
 285         d = self.check_and_repair(verify)
 286         def _done(r):
 287             dr = DeepCheckAndRepairResults(self.storage_index)
 288             dr.add_check(r, [])
 289             return dr
 290         d.addCallback(_done)
 291         return d
 292
 293     def download_best_version(self):
 294         if isinstance(self.my_uri, uri.LiteralFileURI):
 295             return defer.succeed(self.my_uri.data)
 296         if self.storage_index not in self.all_contents:
 297             return defer.fail(NotEnoughSharesError(None, 0, 3))
 298         return defer.succeed(self.all_contents[self.storage_index])
 299
 300     def overwrite(self, new_contents):
 301         if len(new_contents) > self.MUTABLE_SIZELIMIT:
 302             raise FileTooLargeError("SDMF is limited to one segment, and "
 303                                     "%d > %d" % (len(new_contents),
 304                                                  self.MUTABLE_SIZELIMIT))
 305         assert not self.is_readonly()
 306         self.all_contents[self.storage_index] = new_contents
 307         return defer.succeed(None)
 308     def modify(self, modifier):
 309         # this does not implement FileTooLargeError, but the real one does
 310         return defer.maybeDeferred(self._modify, modifier)
 311     def _modify(self, modifier):
 312         assert not self.is_readonly()
 313         old_contents = self.all_contents[self.storage_index]
 314         self.all_contents[self.storage_index] = modifier(old_contents, None, True)
 315         return None
 316
 317 def make_mutable_file_cap():
 318     return uri.WriteableSSKFileURI(writekey=os.urandom(16),
 319                                    fingerprint=os.urandom(32))
 320 def make_mutable_file_uri():
 321     return make_mutable_file_cap().to_string()
 322
 323 def make_verifier_uri():
 324     return uri.SSKVerifierURI(storage_index=os.urandom(16),
 325                               fingerprint=os.urandom(32)).to_string()
 326
 327 class FakeDirectoryNode(dirnode.DirectoryNode):
 328     """This offers IDirectoryNode, but uses a FakeMutableFileNode for the
 329     backing store, so it doesn't go to the grid. The child data is still
 330     encrypted and serialized, so this isn't useful for tests that want to
 331     look inside the dirnodes and check their contents.
 332     """
 333     filenode_class = FakeMutableFileNode
 334
 335 class LoggingServiceParent(service.MultiService):
 336     def log(self, *args, **kwargs):
 337         return log.msg(*args, **kwargs)
 338
 339 class SystemTestMixin(pollmixin.PollMixin, testutil.StallMixin):
 340
 341     # SystemTestMixin tests tend to be a lot of work, and we have a few
 342     # buildslaves that are pretty slow, and every once in a while these tests
 343     # run up against the default 120 second timeout. So increase the default
 344     # timeout. Individual test cases can override this, of course.
 345     timeout = 300
 346
 347     def setUp(self):
 348         self.sparent = service.MultiService()
 349         self.sparent.startService()
 350
 351         self.stats_gatherer = None
 352         self.stats_gatherer_furl = None
 353         self.key_generator_svc = None
 354         self.key_generator_furl = None
 355
 356     def tearDown(self):
 357         log.msg("shutting down SystemTest services")
 358         d = self.sparent.stopService()
 359         d.addBoth(flush_but_dont_ignore)
 360         return d
 361
 362     def getdir(self, subdir):
 363         return os.path.join(self.basedir, subdir)
 364
 365     def add_service(self, s):
 366         s.setServiceParent(self.sparent)
 367         return s
 368
 369     def set_up_nodes(self, NUMCLIENTS=5,
 370                      use_stats_gatherer=False, use_key_generator=False):
 371         self.numclients = NUMCLIENTS
 372         iv_dir = self.getdir("introducer")
 373         if not os.path.isdir(iv_dir):
 374             fileutil.make_dirs(iv_dir)
 375             f = open(os.path.join(iv_dir, "webport"), "w")
 376             f.write("tcp:0:interface=127.0.0.1\n")
 377             f.close()
 378             if SYSTEM_TEST_CERTS:
 379                 os.mkdir(os.path.join(iv_dir, "private"))
 380                 f = open(os.path.join(iv_dir, "private", "node.pem"), "w")
 381                 f.write(SYSTEM_TEST_CERTS[0])
 382                 f.close()
 383         iv = IntroducerNode(basedir=iv_dir)
 384         self.introducer = self.add_service(iv)
 385         d = self.introducer.when_tub_ready()
 386         d.addCallback(self._get_introducer_web)
 387         if use_stats_gatherer:
 388             d.addCallback(self._set_up_stats_gatherer)
 389         if use_key_generator:
 390             d.addCallback(self._set_up_key_generator)
 391         d.addCallback(self._set_up_nodes_2)
 392         if use_stats_gatherer:
 393             d.addCallback(self._grab_stats)
 394         return d
 395
 396     def _get_introducer_web(self, res):
 397         f = open(os.path.join(self.getdir("introducer"), "node.url"), "r")
 398         self.introweb_url = f.read().strip()
 399         f.close()
 400
 401     def _set_up_stats_gatherer(self, res):
 402         statsdir = self.getdir("stats_gatherer")
 403         fileutil.make_dirs(statsdir)
 404         self.stats_gatherer_svc = StatsGathererService(statsdir)
 405         self.stats_gatherer = self.stats_gatherer_svc.stats_gatherer
 406         self.add_service(self.stats_gatherer_svc)
 407
 408         d = fireEventually()
 409         sgf = os.path.join(statsdir, 'stats_gatherer.furl')
 410         def check_for_furl():
 411             return os.path.exists(sgf)
 412         d.addCallback(lambda junk: self.poll(check_for_furl, timeout=30))
 413         def get_furl(junk):
 414             self.stats_gatherer_furl = file(sgf, 'rb').read().strip()
 415         d.addCallback(get_furl)
 416         return d
 417
 418     def _set_up_key_generator(self, res):
 419         kgsdir = self.getdir("key_generator")
 420         fileutil.make_dirs(kgsdir)
 421
 422         self.key_generator_svc = KeyGeneratorService(kgsdir,
 423                                                      display_furl=False,
 424                                                      default_key_size=522)
 425         self.key_generator_svc.key_generator.pool_size = 4
 426         self.key_generator_svc.key_generator.pool_refresh_delay = 60
 427         self.add_service(self.key_generator_svc)
 428
 429         d = fireEventually()
 430         def check_for_furl():
 431             return os.path.exists(os.path.join(kgsdir, 'key_generator.furl'))
 432         d.addCallback(lambda junk: self.poll(check_for_furl, timeout=30))
 433         def get_furl(junk):
 434             kgf = os.path.join(kgsdir, 'key_generator.furl')
 435             self.key_generator_furl = file(kgf, 'rb').read().strip()
 436         d.addCallback(get_furl)
 437         return d
 438
 439     def _set_up_nodes_2(self, res):
 440         q = self.introducer
 441         self.introducer_furl = q.introducer_url
 442         self.clients = []
 443         basedirs = []
 444         for i in range(self.numclients):
 445             basedir = self.getdir("client%d" % i)
 446             basedirs.append(basedir)
 447             fileutil.make_dirs(os.path.join(basedir, "private"))
 448             if len(SYSTEM_TEST_CERTS) > (i+1):
 449                 f = open(os.path.join(basedir, "private", "node.pem"), "w")
 450                 f.write(SYSTEM_TEST_CERTS[i+1])
 451                 f.close()
 452
 453             def write(name, value):
 454                 open(os.path.join(basedir, name), "w").write(value+"\n")
 455             if i == 0:
 456                 # clients[0] runs a webserver and a helper, no key_generator
 457                 write("webport", "tcp:0:interface=127.0.0.1")
 458                 write("run_helper", "yes")
 459                 write("keepalive_timeout", "600")
 460             if i == 3:
 461                 # clients[3] runs a webserver and uses a helper, uses
 462                 # key_generator
 463                 write("webport", "tcp:0:interface=127.0.0.1")
 464                 write("disconnect_timeout", "1800")
 465                 if self.key_generator_furl:
 466                     kgf = "%s\n" % (self.key_generator_furl,)
 467                     write("key_generator.furl", kgf)
 468             write("introducer.furl", self.introducer_furl)
 469             if self.stats_gatherer_furl:
 470                 write("stats_gatherer.furl", self.stats_gatherer_furl)
 471
 472         # give subclasses a chance to append lines to the node's tahoe.cfg
 473         # files before they are launched.
 474         self._set_up_nodes_extra_config()
 475
 476         # start clients[0], wait for it's tub to be ready (at which point it
 477         # will have registered the helper furl).
 478         c = self.add_service(client.Client(basedir=basedirs[0]))
 479         self.clients.append(c)
 480         c.set_default_mutable_keysize(522)
 481         d = c.when_tub_ready()
 482         def _ready(res):
 483             f = open(os.path.join(basedirs[0],"private","helper.furl"), "r")
 484             helper_furl = f.read()
 485             f.close()
 486             self.helper_furl = helper_furl
 487             if self.numclients >= 4:
 488                 f = open(os.path.join(basedirs[3],"helper.furl"), "w")
 489                 f.write(helper_furl)
 490                 f.close()
 491
 492             # this starts the rest of the clients
 493             for i in range(1, self.numclients):
 494                 c = self.add_service(client.Client(basedir=basedirs[i]))
 495                 self.clients.append(c)
 496                 c.set_default_mutable_keysize(522)
 497             log.msg("STARTING")
 498             return self.wait_for_connections()
 499         d.addCallback(_ready)
 500         def _connected(res):
 501             log.msg("CONNECTED")
 502             # now find out where the web port was
 503             self.webish_url = self.clients[0].getServiceNamed("webish").getURL()
 504             if self.numclients >=4:
 505                 # and the helper-using webport
 506                 self.helper_webish_url = self.clients[3].getServiceNamed("webish").getURL()
 507         d.addCallback(_connected)
 508         return d
 509
 510     def _set_up_nodes_extra_config(self):
 511         # for overriding by subclasses
 512         pass
 513
 514     def _grab_stats(self, res):
 515         d = self.stats_gatherer.poll()
 516         return d
 517
 518     def bounce_client(self, num):
 519         c = self.clients[num]
 520         d = c.disownServiceParent()
 521         # I think windows requires a moment to let the connection really stop
 522         # and the port number made available for re-use. TODO: examine the
 523         # behavior, see if this is really the problem, see if we can do
 524         # better than blindly waiting for a second.
 525         d.addCallback(self.stall, 1.0)
 526         def _stopped(res):
 527             new_c = client.Client(basedir=self.getdir("client%d" % num))
 528             self.clients[num] = new_c
 529             new_c.set_default_mutable_keysize(522)
 530             self.add_service(new_c)
 531             return new_c.when_tub_ready()
 532         d.addCallback(_stopped)
 533         d.addCallback(lambda res: self.wait_for_connections())
 534         def _maybe_get_webport(res):
 535             if num == 0:
 536                 # now find out where the web port was
 537                 self.webish_url = self.clients[0].getServiceNamed("webish").getURL()
 538         d.addCallback(_maybe_get_webport)
 539         return d
 540
 541     def add_extra_node(self, client_num, helper_furl=None,
 542                        add_to_sparent=False):
 543         # usually this node is *not* parented to our self.sparent, so we can
 544         # shut it down separately from the rest, to exercise the
 545         # connection-lost code
 546         basedir = self.getdir("client%d" % client_num)
 547         if not os.path.isdir(basedir):
 548             fileutil.make_dirs(basedir)
 549         open(os.path.join(basedir, "introducer.furl"), "w").write(self.introducer_furl)
 550         if helper_furl:
 551             f = open(os.path.join(basedir, "helper.furl") ,"w")
 552             f.write(helper_furl+"\n")
 553             f.close()
 554
 555         c = client.Client(basedir=basedir)
 556         self.clients.append(c)
 557         c.set_default_mutable_keysize(522)
 558         self.numclients += 1
 559         if add_to_sparent:
 560             c.setServiceParent(self.sparent)
 561         else:
 562             c.startService()
 563         d = self.wait_for_connections()
 564         d.addCallback(lambda res: c)
 565         return d
 566
 567     def _check_connections(self):
 568         for c in self.clients:
 569             if not c.connected_to_introducer():
 570                 return False
 571             sb = c.get_storage_broker()
 572             if len(sb.get_connected_servers()) != self.numclients:
 573                 return False
 574         return True
 575
 576     def wait_for_connections(self, ignored=None):
 577         # TODO: replace this with something that takes a list of peerids and
 578         # fires when they've all been heard from, instead of using a count
 579         # and a threshold
 580         return self.poll(self._check_connections, timeout=200)
 581
 582
 583 # our system test uses the same Tub certificates each time, to avoid the
 584 # overhead of key generation
 585 SYSTEM_TEST_CERTS = [
 586 """-----BEGIN CERTIFICATE-----
 587 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 588 aW5neTAeFw0wODA3MjUyMjQyMDVaFw0wOTA3MjUyMjQyMDVaMBcxFTATBgNVBAMU
 589 DG5ld3BiX3RoaW5neTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxHCWajrR
 590 2h/iurw8k93m8WUdE3xypJiiAITw7GkKlKbCLD+dEce2MXwVVYca0n/MZZsj89Cu
 591 Ko0lLjksMseoSDoj98iEmVpaY5mc2ntpQ+FXdoEmPP234XRWEg2HQ+EaK6+WkGQg
 592 DDXQvFJCVCQk/n1MdAwZZ6vqf2ITzSuD44kCAwEAATANBgkqhkiG9w0BAQQFAAOB
 593 gQBn6qPKGdFjWJy7sOOTUFfm/THhHQqAh1pBDLkjR+OtzuobCoP8n8J1LNG3Yxds
 594 Jj7NWQL7X5TfOlfoi7e9jK0ujGgWh3yYU6PnHzJLkDiDT3LCSywQuGXCjh0tOStS
 595 2gaCmmAK2cfxSStKzNcewl2Zs8wHMygq8TLFoZ6ozN1+xQ==
 596 -----END CERTIFICATE-----
 597 -----BEGIN RSA PRIVATE KEY-----
 598 MIICXQIBAAKBgQDEcJZqOtHaH+K6vDyT3ebxZR0TfHKkmKIAhPDsaQqUpsIsP50R
 599 x7YxfBVVhxrSf8xlmyPz0K4qjSUuOSwyx6hIOiP3yISZWlpjmZzae2lD4Vd2gSY8
 600 /bfhdFYSDYdD4Rorr5aQZCAMNdC8UkJUJCT+fUx0DBlnq+p/YhPNK4PjiQIDAQAB
 601 AoGAZyDMdrymiyMOPwavrtlicvyohSBid3MCKc+hRBvpSB0790r2RO1aAySndp1V
 602 QYmCXx1RhKDbrs8m49t0Dryu5T+sQrFl0E3usAP3vvXWeh4jwJ9GyiRWy4xOEuEQ
 603 3ewjbEItHqA/bRJF0TNtbOmZTDC7v9FRPf2bTAyFfTZep5kCQQD33q1RA8WUYtmQ
 604 IArgHqt69i421lpXlOgqotFHwTx4FiGgVzDQCDuXU6txB9EeKRM340poissav/n6
 605 bkLZ7/VDAkEAyuIPkeI59sE5NnmW+N47NbCfdM1Smy1YxZpv942EmP9Veub5N0dw
 606 iK5bLAgEguUIjpTsh3BRmsE9Xd+ItmnRQwJBAMZhbg19G1EbnE0BmDKv2UbcaThy
 607 bnPSNc6J6T2opqDl9ZvCrMqTDD6dNIWOYAvni/4a556sFsoeBBAu10peBskCQE6S
 608 cB86cuJagLLVMh/dySaI6ahNoFFSpY+ZuQUxfInYUR2Q+DFtbGqyw8JwtHaRBthZ
 609 WqU1XZVGg2KooISsxIsCQQD1PS7//xHLumBb0jnpL7n6W8gmiTyzblT+0otaCisP
 610 fN6rTlwV1o8VsOUAz0rmKO5RArCbkmb01WtMgPCDBYkk
 611 -----END RSA PRIVATE KEY-----
 612 """, # 0
 613 """-----BEGIN CERTIFICATE-----
 614 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 615 aW5neTAeFw0wODA3MjUyMjQyMDVaFw0wOTA3MjUyMjQyMDVaMBcxFTATBgNVBAMU
 616 DG5ld3BiX3RoaW5neTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAs9CALdmW
 617 kJ6r0KPSLdGCA8rzQKxWayrMckT22ZtbRv3aw6VA96dWclpY+T2maV0LrAzmMSL8
 618 n61ydJHM33iYDOyWbwHWN45XCjY/e20PL54XUl/DmbBHEhQVQLIfCldcRcnWEfoO
 619 iOhDJfWpDO1dmP/aOYLdkZCZvBtPAfyUqRcCAwEAATANBgkqhkiG9w0BAQQFAAOB
 620 gQAN9eaCREkzzk4yPIaWYkWHg3Igs1vnOR/iDw3OjyxO/xJFP2lkA2WtrwL2RTRq
 621 dxA8gwdPyrWgdiZElwZH8mzTJ4OdUXLSMclLOg9kvH6gtSvhLztfEDwDP1wRhikh
 622 OeWWu2GIC+uqFCI1ftoGgU+aIa6yrHswf66rrQvBSSvJPQ==
 623 -----END CERTIFICATE-----
 624 -----BEGIN RSA PRIVATE KEY-----
 625 MIICXQIBAAKBgQCz0IAt2ZaQnqvQo9It0YIDyvNArFZrKsxyRPbZm1tG/drDpUD3
 626 p1ZyWlj5PaZpXQusDOYxIvyfrXJ0kczfeJgM7JZvAdY3jlcKNj97bQ8vnhdSX8OZ
 627 sEcSFBVAsh8KV1xFydYR+g6I6EMl9akM7V2Y/9o5gt2RkJm8G08B/JSpFwIDAQAB
 628 AoGBAIUy5zCPpSP+FeJY6CG+t6Pdm/IFd4KtUoM3KPCrT6M3+uzApm6Ny9Crsor2
 629 qyYTocjSSVaOxzn1fvpw4qWLrH1veUf8ozMs8Z0VuPHD1GYUGjOXaBPXb5o1fQL9
 630 h7pS5/HrDDPN6wwDNTsxRf/fP58CnfwQUhwdoxcx8TnVmDQxAkEA6N3jBXt/Lh0z
 631 UbXHhv3QBOcqLZA2I4tY7wQzvUvKvVmCJoW1tfhBdYQWeQv0jzjL5PzrrNY8hC4l
 632 8+sFM3h5TwJBAMWtbFIEZfRSG1JhHK3evYHDTZnr/j+CdoWuhzP5RkjkIKsiLEH7
 633 2ZhA7CdFQLZF14oXy+g1uVCzzfB2WELtUbkCQQDKrb1XWzrBlzbAipfkXWs9qTmj
 634 uJ32Z+V6+0xRGPOXxJ0sDDqw7CeFMfchWg98zLFiV+SEZV78qPHtkAPR3ayvAkB+
 635 hUMhM4N13t9x2IoclsXAOhp++9bdG0l0woHyuAdOPATUw6iECwf4NQVxFRgYEZek
 636 4Ro3Y7taddrHn1dabr6xAkAic47OoLOROYLpljmJJO0eRe3Z5IFe+0D2LfhAW3LQ
 637 JU+oGq5pCjfnoaDElRRZn0+GmunnWeQEYKoflTi/lI9d
 638 -----END RSA PRIVATE KEY-----
 639 """, # 1
 640 """-----BEGIN CERTIFICATE-----
 641 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 642 aW5neTAeFw0wODA3MjUyMjQyMDZaFw0wOTA3MjUyMjQyMDZaMBcxFTATBgNVBAMU
 643 DG5ld3BiX3RoaW5neTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAsxG7LTrz
 644 DF+9wegOR/BRJhjSumPUbYQnNAUKtPraFsGjAJILP44AHdnHt1MONLgTeX1ynapo
 645 q6O/q5cdKtBB7uEh7FpkLCCwpZt/m0y79cynn8AmWoQVgl8oS0567UmPeJnTzFPv
 646 dmT5dlaQALeX5YGceAsEvhmAsdOMttaor38CAwEAATANBgkqhkiG9w0BAQQFAAOB
 647 gQA345rxotfvh2kfgrmRzAyGewVBV4r23Go30GSZir8X2GoH3qKNwO4SekAohuSw
 648 AiXzLUbwIdSRSqaLFxSC7Duqc9eIeFDAWjeEmpfFLBNiw3K8SLA00QrHCUXnECTD
 649 b/Kk6OGuvPOiuuONVjEuEcRdCH3/Li30D0AhJaMynjhQJQ==
 650 -----END CERTIFICATE-----
 651 -----BEGIN RSA PRIVATE KEY-----
 652 MIICXQIBAAKBgQCzEbstOvMMX73B6A5H8FEmGNK6Y9RthCc0BQq0+toWwaMAkgs/
 653 jgAd2ce3Uw40uBN5fXKdqmiro7+rlx0q0EHu4SHsWmQsILClm3+bTLv1zKefwCZa
 654 hBWCXyhLTnrtSY94mdPMU+92ZPl2VpAAt5flgZx4CwS+GYCx04y21qivfwIDAQAB
 655 AoGBAIlhFg/aRPL+VM9539LzHN60dp8GzceDdqwjHhbAySZiQlLCuJx2rcI4/U65
 656 CpIJku9G/fLV9N2RkA/trDPXeGyqCTJfnNzyZcvvMscRMFqSGyc21Y0a+GS8bIxt
 657 1R2B18epSVMsWSWWMypeEgsfv29LV7oSWG8UKaqQ9+0h63DhAkEA4i2L/rori/Fb
 658 wpIBfA+xbXL/GmWR7xPW+3nG3LdLQpVzxz4rIsmtO9hIXzvYpcufQbwgVACyMmRf
 659 TMABeSDM7wJBAMquEdTaVXjGfH0EJ7z95Ys2rYTiCXjBfyEOi6RXXReqV9SXNKlN
 660 aKsO22zYecpkAjY1EdUdXWP/mNVEybjpZnECQQCcuh0JPS5RwcTo9c2rjyBOjGIz
 661 g3B1b5UIG2FurmCrWe6pgO3ZJFEzZ/L2cvz0Hj5UCa2JKBZTDvRutZoPumfnAkAb
 662 nSW+y1Rz1Q8m9Ub4v9rjYbq4bRd/RVWtyk6KQIDldYbr5wH8wxgsniSVKtVFFuUa
 663 P5bDY3HS6wMGo42cTOhxAkAcdweQSQ3j7mfc5vh71HeAC1v/VAKGehGOUdeEIQNl
 664 Sb2WuzpZkbfsrVzW6MdlgY6eE7ufRswhDPLWPC8MP0d1
 665 -----END RSA PRIVATE KEY-----
 666 """, # 2
 667 """-----BEGIN CERTIFICATE-----
 668 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 669 aW5neTAeFw0wODA3MjUyMjQyMDZaFw0wOTA3MjUyMjQyMDZaMBcxFTATBgNVBAMU
 670 DG5ld3BiX3RoaW5neTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxnH+pbOS
 671 qlJlsHpKUQtV0oN1Mv+ESG+yUDxStFFGjkJv/UIRzpxqFqY/6nJ3D03kZsDdcXyi
 672 CfV9hPYQaVNMn6z+puPmIagfBQ0aOyuI+nUhCttZIYD9071BjW5bCMX5NZWL/CZm
 673 E0HdAZ77H6UrRckJ7VR8wAFpihBxD5WliZcCAwEAATANBgkqhkiG9w0BAQQFAAOB
 674 gQAwXqY1Sjvp9JSTHKklu7s0T6YmH/BKSXrHpS2xO69svK+ze5/+5td3jPn4Qe50
 675 xwRNZSFmSLuJLfCO32QJSJTB7Vs5D3dNTZ2i8umsaodm97t8hit7L75nXRGHKH//
 676 xDVWAFB9sSgCQyPMRkL4wB4YSfRhoSKVwMvaz+XRZDUU0A==
 677 -----END CERTIFICATE-----
 678 -----BEGIN RSA PRIVATE KEY-----
 679 MIICXAIBAAKBgQDGcf6ls5KqUmWwekpRC1XSg3Uy/4RIb7JQPFK0UUaOQm/9QhHO
 680 nGoWpj/qcncPTeRmwN1xfKIJ9X2E9hBpU0yfrP6m4+YhqB8FDRo7K4j6dSEK21kh
 681 gP3TvUGNblsIxfk1lYv8JmYTQd0BnvsfpStFyQntVHzAAWmKEHEPlaWJlwIDAQAB
 682 AoGAdHNMlXwtItm7ZrY8ihZ2xFP0IHsk60TwhHkBp2LSXoTKJvnwbSgIcUYZ18BX
 683 8Zkp4MpoqEIU7HcssyuaMdR572huV2w0D/2gYJQLQ5JapaR3hMox3YG4wjXasN1U
 684 1iZt7JkhKlOy+ElL5T9mKTE1jDsX2RAv4WALzMpYFo7vs4ECQQDxqrPaqRQ5uYS/
 685 ejmIk05nM3Q1zmoLtMDrfRqrjBhaf/W3hqGihiqN2kL3PIIYcxSRWiyNlYXjElsR
 686 2sllBTe3AkEA0jcMHVThwKt1+Ce5VcE7N6hFfbsgISTjfJ+Q3K2NkvJkmtE8ZRX5
 687 XprssnPN8owkfF5yuKbcSZL3uvaaSGN9IQJAfTVnN9wwOXQwHhDSbDt9/KRBCnum
 688 n+gHqDrKLaVJHOJ9SZf8eLswoww5c+UqtkYxmtlwie61Tp+9BXQosilQ4wJBAIZ1
 689 XVNZmriBM4jR59L5MOZtxF0ilu98R+HLsn3kqLyIPF9mXCoQPxwLHkEan213xFKk
 690 mt6PJDIPRlOZLqAEuuECQFQMCrn0VUwPg8E40pxMwgMETvVflPs/oZK1Iu+b7+WY
 691 vBptAyhMu31fHQFnJpiUOyHqSZnOZyEn1Qu2lszNvUg=
 692 -----END RSA PRIVATE KEY-----
 693 """, # 3
 694 """-----BEGIN CERTIFICATE-----
 695 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 696 aW5neTAeFw0wODA3MjUyMjQyMDZaFw0wOTA3MjUyMjQyMDZaMBcxFTATBgNVBAMU
 697 DG5ld3BiX3RoaW5neTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAnjiOwipn
 698 jigDuNMfNG/tBJhPwYUHhSbQdvrTubhsxw1oOq5XpNqUwRtC8hktOKM3hghyqExP
 699 62EOi0aJBkRhtwtPSLBCINptArZLfkog/nTIqVv4eLEzJ19nTi/llHHWKcgA6XTI
 700 sU/snUhGlySA3RpETvXqIJTauQRZz0kToSUCAwEAATANBgkqhkiG9w0BAQQFAAOB
 701 gQCQ+u/CsX5WC5m0cLrpyIS6qZa62lrB3mj9H1aIQhisT5kRsMz3FJ1aOaS8zPRz
 702 w0jhyRmamCcSsWf5WK539iOtsXbKMdAyjNtkQO3g+fnsLgmznAjjst24jfr+XU59
 703 0amiy1U6TY93gtEBZHtiLldPdUMsTuFbBlqbcMBQ50x9rA==
 704 -----END CERTIFICATE-----
 705 -----BEGIN RSA PRIVATE KEY-----
 706 MIICXAIBAAKBgQCeOI7CKmeOKAO40x80b+0EmE/BhQeFJtB2+tO5uGzHDWg6rlek
 707 2pTBG0LyGS04ozeGCHKoTE/rYQ6LRokGRGG3C09IsEIg2m0Ctkt+SiD+dMipW/h4
 708 sTMnX2dOL+WUcdYpyADpdMixT+ydSEaXJIDdGkRO9eoglNq5BFnPSROhJQIDAQAB
 709 AoGAAPrst3s3xQOucjismtCOsVaYN+SxFTwWUoZfRWlFEz6cBLELzfOktEWM9p79
 710 TrqEH4px22UNobGqO2amdql5yXwEFVhYQkRB8uDA8uVaqpL8NLWTGPRXxZ2DSU+n
 711 7/FLf/TWT3ti/ZtXaPVRj6E2/Mq9AVEVOjUYzkNjM02OxcECQQDKEqmPbdZq2URU
 712 7RbUxkq5aTp8nzAgbpUsgBGQ9PDAymhj60BDEP0q28Ssa7tU70pRnQ3AZs9txgmL
 713 kK2g97FNAkEAyHH9cIb6qXOAJPIr/xamFGr5uuYw9TJPz/hfVkVimW/aZnBB+e6Q
 714 oALJBDKJWeYPzdNbouJYg8MeU0qWdZ5DOQJADUk+1sxc/bd9U6wnBSRog1pU2x7I
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 718 fksL/q2vlPczvBihgcxt+UzW/UrNkelOuX3i57PDvFs=
 719 -----END RSA PRIVATE KEY-----
 720 """, # 4
 721 """-----BEGIN CERTIFICATE-----
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 731 -----END CERTIFICATE-----
 732 -----BEGIN RSA PRIVATE KEY-----
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 745 w1FTEZ/kSA9wSNhyNGt7dgUo6zFhm2u973HBCUb3dg==
 746 -----END RSA PRIVATE KEY-----
 747 """, # 5
 748 """-----BEGIN CERTIFICATE-----
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 758 -----END CERTIFICATE-----
 759 -----BEGIN RSA PRIVATE KEY-----
 760 MIICXQIBAAKBgQC+FNGPV0A05+x79QF5N8x6RkrFkew0+v6oFhq95YAcN1538EzI
 761 yBoxXafodB2INpGMmTOMcIXfEG2kgl4QZSp+sXShvwEhlfLeqTrx5f/QJVRuCaNI
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 772 Q3Wt+I4IrR/OsiACSIQAhS4kBfk/LGggnj56DrWt+oBl
 773 -----END RSA PRIVATE KEY-----
 774 """, #6
 775 """-----BEGIN CERTIFICATE-----
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 784 ydVcrY+zqULJovWwyNmH1QNIQfMat0rj7fylwjiS1y/YsA==
 785 -----END CERTIFICATE-----
 786 -----BEGIN RSA PRIVATE KEY-----
 787 MIICXAIBAAKBgQC0qHHqwQCOfodZzpPaSXCU+fSq7Ie0BMjDxXd7M/jq/qDatFLt
 788 1PLCjgZM/i9fnyX6wL3P0l6qFDWtZLAwrgWacMxkK7sBU7ugwheld1LPuXRuAKc2
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 799 8ODEYLjqWr9K8dtbgwdpzwbkaGhQYpyvsguMvNPMohs=
 800 -----END RSA PRIVATE KEY-----
 801 """, #7
 802 """-----BEGIN CERTIFICATE-----
 803 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
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 811 Pxx7KUfOlm/M4XUSMu31sNJ0kQniBwpkW43YmHVNFb/R7g==
 812 -----END CERTIFICATE-----
 813 -----BEGIN RSA PRIVATE KEY-----
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 815 zMEvuY04DS5yr7JPCH0LggIS61Y9ooFIpjlcj5F15uH4R+r66u04uB8keV9wKtoT
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 826 qDC6jLqzu/SoOYaqa13QzCsttO2iZk8Ygfy3Yz0n37GE
 827 -----END RSA PRIVATE KEY-----
 828 """, #8
 829 """-----BEGIN CERTIFICATE-----
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 838 ZzsWAZvTNXd/eme0SgOzD10rfntA6ZIgJTWHx3E0RkdwKw==
 839 -----END CERTIFICATE-----
 840 -----BEGIN RSA PRIVATE KEY-----
 841 MIICXQIBAAKBgQDiact/7HQJYoMo/k8tnzu3ZF5IMT8nlCgjlWETRtdpqF2E+tBM
 842 LbC86lP432fMSkj0BKH96NWRgaVzTec0pEvvPJUzVTIZ24TCxGywUyp/ImEjWn5W
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 853 dhlDnpXDud/AtX4Ft2LaquQ15fteRrYjjwI9SFGytjtp
 854 -----END RSA PRIVATE KEY-----
 855 """, #9
 856 """-----BEGIN CERTIFICATE-----
 857 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 858 aW5neTAeFw0wODA3MjUyMjQ3NThaFw0wOTA3MjUyMjQ3NThaMBcxFTATBgNVBAMU
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 865 OU0j8Md/dzlkm//K1bzLyUaPq204ofH8su2IEX4b3IGmAQ==
 866 -----END CERTIFICATE-----
 867 -----BEGIN RSA PRIVATE KEY-----
 868 MIICWwIBAAKBgQC54t+jA9ORde0d5TYVlLPaYmEeaOp7IjWgyjLKCCidxzHrm8zF
 869 pF+WOfPZ06NVVikI6f8ut0/BXEc7wo0OyZB5Y9GOecFrZ0Wqo6en/yAQkUkFbsr+
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 880 JW3vRxvfdrUuzdlvZ/Pbsu/vOd+cuIa4h0yD5q3N+g==
 881 -----END RSA PRIVATE KEY-----
 882 """, #10
 883 """-----BEGIN CERTIFICATE-----
 884 MIIBnjCCAQcCAgCEMA0GCSqGSIb3DQEBBAUAMBcxFTATBgNVBAMUDG5ld3BiX3Ro
 885 aW5neTAeFw0wODA3MjUyMjQ3NThaFw0wOTA3MjUyMjQ3NThaMBcxFTATBgNVBAMU
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 892 q4/d9iKXMPvbpQdcesOzgOffFZevLQSWyPRaIdYBOOiYUA==
 893 -----END CERTIFICATE-----
 894 -----BEGIN RSA PRIVATE KEY-----
 895 MIICXQIBAAKBgQCu4GHCT4ld2XB8pdc3wr7jcnIRgJXsWntmIRLi3gAQm5C4GolU
 896 zGnN5nO7a3+9Vvn1OFrHG1g0YPdfLo6Dl1O///O1aeDw/sfDC99utQgJTrOjokCG
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 902 hhSbtzYdAkEAw0B93CXfso8g2QIMj/HJJz/wNTLtg+rriXp6jh5HWe6lKWRVrce+
 903 1w8Qz6OI/ZP6xuQ9HNeZxJ/W6rZPW6BGXwJAHcTuRPA1p/fvUvHh7Q/0zfcNAbkb
 904 QlV9GL/TzmNtB+0EjpqvDo2g8XTlZIhN85YCEf8D5DMjSn3H+GMHN/SArQJBAJlW
 905 MIGPjNoh5V4Hae4xqBOW9wIQeM880rUo5s5toQNTk4mqLk9Hquwh/MXUXGUora08
 906 2XGpMC1midXSTwhaGmkCQQCdivptFEYl33PrVbxY9nzHynpp4Mi89vQF0cjCmaYY
 907 N8L+bvLd4BU9g6hRS8b59lQ6GNjryx2bUnCVtLcey4Jd
 908 -----END RSA PRIVATE KEY-----
 909 """, #11
 910 ]
 911
 912 # To disable the pre-computed tub certs, uncomment this line.
 913 #SYSTEM_TEST_CERTS = []
 914
 915 TEST_DATA="\x02"*(immutable.upload.Uploader.URI_LIT_SIZE_THRESHOLD+1)
 916
 917 class ShouldFailMixin:
 918     def shouldFail(self, expected_failure, which, substring,
 919                    callable, *args, **kwargs):
 920         """Assert that a function call raises some exception. This is a
 921         Deferred-friendly version of TestCase.assertRaises() .
 922
 923         Suppose you want to verify the following function:
 924
 925          def broken(a, b, c):
 926              if a < 0:
 927                  raise TypeError('a must not be negative')
 928              return defer.succeed(b+c)
 929
 930         You can use:
 931             d = self.shouldFail(TypeError, 'test name',
 932                                 'a must not be negative',
 933                                 broken, -4, 5, c=12)
 934         in your test method. The 'test name' string will be included in the
 935         error message, if any, because Deferred chains frequently make it
 936         difficult to tell which assertion was tripped.
 937
 938         The substring= argument, if not None, must appear in the 'repr'
 939         of the message wrapped by this Failure, or the test will fail.
 940         """
 941
 942         assert substring is None or isinstance(substring, str)
 943         d = defer.maybeDeferred(callable, *args, **kwargs)
 944         def done(res):
 945             if isinstance(res, failure.Failure):
 946                 res.trap(expected_failure)
 947                 if substring:
 948                     message = repr(res.value.args[0])
 949                     self.failUnless(substring in message,
 950                                     "substring '%s' not in '%s'"
 951                                     % (substring, message))
 952             else:
 953                 self.fail("%s was supposed to raise %s, not get '%s'" %
 954                           (which, expected_failure, res))
 955         d.addBoth(done)
 956         return d
 957
 958 class WebErrorMixin:
 959     def explain_web_error(self, f):
 960         # an error on the server side causes the client-side getPage() to
 961         # return a failure(t.web.error.Error), and its str() doesn't show the
 962         # response body, which is where the useful information lives. Attach
 963         # this method as an errback handler, and it will reveal the hidden
 964         # message.
 965         f.trap(WebError)
 966         print "Web Error:", f.value, ":", f.value.response
 967         return f
 968
 969     def _shouldHTTPError(self, res, which, validator):
 970         if isinstance(res, failure.Failure):
 971             res.trap(WebError)
 972             return validator(res)
 973         else:
 974             self.fail("%s was supposed to Error, not get '%s'" % (which, res))
 975
 976     def shouldHTTPError(self, which,
 977                         code=None, substring=None, response_substring=None,
 978                         callable=None, *args, **kwargs):
 979         # returns a Deferred with the response body
 980         assert substring is None or isinstance(substring, str)
 981         assert callable
 982         def _validate(f):
 983             if code is not None:
 984                 self.failUnlessEqual(f.value.status, str(code))
 985             if substring:
 986                 code_string = str(f)
 987                 self.failUnless(substring in code_string,
 988                                 "substring '%s' not in '%s'"
 989                                 % (substring, code_string))
 990             response_body = f.value.response
 991             if response_substring:
 992                 self.failUnless(response_substring in response_body,
 993                                 "response substring '%s' not in '%s'"
 994                                 % (response_substring, response_body))
 995             return response_body
 996         d = defer.maybeDeferred(callable, *args, **kwargs)
 997         d.addBoth(self._shouldHTTPError, which, _validate)
 998         return d
 999
1000 class ErrorMixin(WebErrorMixin):
1001     def explain_error(self, f):
1002         if f.check(defer.FirstError):
1003             print "First Error:", f.value.subFailure
1004         return f
1005
1006 def corrupt_field(data, offset, size, debug=False):
1007     if random.random() < 0.5:
1008         newdata = testutil.flip_one_bit(data, offset, size)
1009         if debug:
1010             log.msg("testing: corrupting offset %d, size %d flipping one bit orig: %r, newdata: %r" % (offset, size, data[offset:offset+size], newdata[offset:offset+size]))
1011         return newdata
1012     else:
1013         newval = testutil.insecurerandstr(size)
1014         if debug:
1015             log.msg("testing: corrupting offset %d, size %d randomizing field, orig: %r, newval: %r" % (offset, size, data[offset:offset+size], newval))
1016         return data[:offset]+newval+data[offset+size:]
1017
1018 def _corrupt_nothing(data, debug=False):
1019     """Leave the data pristine. """
1020     return data
1021
1022 def _corrupt_file_version_number(data, debug=False):
1023     """Scramble the file data -- the share file version number have one bit
1024     flipped or else will be changed to a random value."""
1025     return corrupt_field(data, 0x00, 4)
1026
1027 def _corrupt_size_of_file_data(data, debug=False):
1028     """Scramble the file data -- the field showing the size of the share data
1029     within the file will be set to one smaller."""
1030     return corrupt_field(data, 0x04, 4)
1031
1032 def _corrupt_sharedata_version_number(data, debug=False):
1033     """Scramble the file data -- the share data version number will have one
1034     bit flipped or else will be changed to a random value, but not 1 or 2."""
1035     return corrupt_field(data, 0x0c, 4)
1036     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1037     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1038     newsharevernum = sharevernum
1039     while newsharevernum in (1, 2):
1040         newsharevernum = random.randrange(0, 2**32)
1041     newsharevernumbytes = struct.pack(">L", newsharevernum)
1042     return data[:0x0c] + newsharevernumbytes + data[0x0c+4:]
1043
1044 def _corrupt_sharedata_version_number_to_plausible_version(data, debug=False):
1045     """Scramble the file data -- the share data version number will be
1046     changed to 2 if it is 1 or else to 1 if it is 2."""
1047     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1048     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1049     if sharevernum == 1:
1050         newsharevernum = 2
1051     else:
1052         newsharevernum = 1
1053     newsharevernumbytes = struct.pack(">L", newsharevernum)
1054     return data[:0x0c] + newsharevernumbytes + data[0x0c+4:]
1055
1056 def _corrupt_segment_size(data, debug=False):
1057     """Scramble the file data -- the field showing the size of the segment
1058     will have one bit flipped or else be changed to a random value."""
1059     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1060     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1061     if sharevernum == 1:
1062         return corrupt_field(data, 0x0c+0x04, 4, debug=False)
1063     else:
1064         return corrupt_field(data, 0x0c+0x04, 8, debug=False)
1065
1066 def _corrupt_size_of_sharedata(data, debug=False):
1067     """Scramble the file data -- the field showing the size of the data
1068     within the share data will have one bit flipped or else will be changed
1069     to a random value."""
1070     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1071     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1072     if sharevernum == 1:
1073         return corrupt_field(data, 0x0c+0x08, 4)
1074     else:
1075         return corrupt_field(data, 0x0c+0x0c, 8)
1076
1077 def _corrupt_offset_of_sharedata(data, debug=False):
1078     """Scramble the file data -- the field showing the offset of the data
1079     within the share data will have one bit flipped or else be changed to a
1080     random value."""
1081     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1082     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1083     if sharevernum == 1:
1084         return corrupt_field(data, 0x0c+0x0c, 4)
1085     else:
1086         return corrupt_field(data, 0x0c+0x14, 8)
1087
1088 def _corrupt_offset_of_ciphertext_hash_tree(data, debug=False):
1089     """Scramble the file data -- the field showing the offset of the
1090     ciphertext hash tree within the share data will have one bit flipped or
1091     else be changed to a random value.
1092     """
1093     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1094     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1095     if sharevernum == 1:
1096         return corrupt_field(data, 0x0c+0x14, 4, debug=False)
1097     else:
1098         return corrupt_field(data, 0x0c+0x24, 8, debug=False)
1099
1100 def _corrupt_offset_of_block_hashes(data, debug=False):
1101     """Scramble the file data -- the field showing the offset of the block
1102     hash tree within the share data will have one bit flipped or else will be
1103     changed to a random value."""
1104     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1105     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1106     if sharevernum == 1:
1107         return corrupt_field(data, 0x0c+0x18, 4)
1108     else:
1109         return corrupt_field(data, 0x0c+0x2c, 8)
1110
1111 def _corrupt_offset_of_block_hashes_to_truncate_crypttext_hashes(data, debug=False):
1112     """Scramble the file data -- the field showing the offset of the block
1113     hash tree within the share data will have a multiple of hash size
1114     subtracted from it, thus causing the downloader to download an incomplete
1115     crypttext hash tree."""
1116     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1117     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1118     if sharevernum == 1:
1119         curval = struct.unpack(">L", data[0x0c+0x18:0x0c+0x18+4])[0]
1120         newval = random.randrange(0, max(1, (curval/hashutil.CRYPTO_VAL_SIZE)/2))*hashutil.CRYPTO_VAL_SIZE
1121         newvalstr = struct.pack(">L", newval)
1122         return data[:0x0c+0x18]+newvalstr+data[0x0c+0x18+4:]
1123     else:
1124         curval = struct.unpack(">Q", data[0x0c+0x2c:0x0c+0x2c+8])[0]
1125         newval = random.randrange(0, max(1, (curval/hashutil.CRYPTO_VAL_SIZE)/2))*hashutil.CRYPTO_VAL_SIZE
1126         newvalstr = struct.pack(">Q", newval)
1127         return data[:0x0c+0x2c]+newvalstr+data[0x0c+0x2c+8:]
1128
1129 def _corrupt_offset_of_share_hashes(data, debug=False):
1130     """Scramble the file data -- the field showing the offset of the share
1131     hash tree within the share data will have one bit flipped or else will be
1132     changed to a random value."""
1133     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1134     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1135     if sharevernum == 1:
1136         return corrupt_field(data, 0x0c+0x1c, 4)
1137     else:
1138         return corrupt_field(data, 0x0c+0x34, 8)
1139
1140 def _corrupt_offset_of_uri_extension(data, debug=False):
1141     """Scramble the file data -- the field showing the offset of the uri
1142     extension will have one bit flipped or else will be changed to a random
1143     value."""
1144     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1145     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1146     if sharevernum == 1:
1147         return corrupt_field(data, 0x0c+0x20, 4)
1148     else:
1149         return corrupt_field(data, 0x0c+0x3c, 8)
1150
1151 def _corrupt_offset_of_uri_extension_to_force_short_read(data, debug=False):
1152     """Scramble the file data -- the field showing the offset of the uri
1153     extension will be set to the size of the file minus 3. This means when
1154     the client tries to read the length field from that location it will get
1155     a short read -- the result string will be only 3 bytes long, not the 4 or
1156     8 bytes necessary to do a successful struct.unpack."""
1157     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1158     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1159     # The "-0x0c" in here is to skip the server-side header in the share
1160     # file, which the client doesn't see when seeking and reading.
1161     if sharevernum == 1:
1162         if debug:
1163             log.msg("testing: corrupting offset %d, size %d, changing %d to %d (len(data) == %d)" % (0x2c, 4, struct.unpack(">L", data[0x2c:0x2c+4])[0], len(data)-0x0c-3, len(data)))
1164         return data[:0x2c] + struct.pack(">L", len(data)-0x0c-3) + data[0x2c+4:]
1165     else:
1166         if debug:
1167             log.msg("testing: corrupting offset %d, size %d, changing %d to %d (len(data) == %d)" % (0x48, 8, struct.unpack(">Q", data[0x48:0x48+8])[0], len(data)-0x0c-3, len(data)))
1168         return data[:0x48] + struct.pack(">Q", len(data)-0x0c-3) + data[0x48+8:]
1169
1170 def _corrupt_mutable_share_data(data, debug=False):
1171     prefix = data[:32]
1172     assert prefix == MutableShareFile.MAGIC, "This function is designed to corrupt mutable shares of v1, and the magic number doesn't look right: %r vs %r" % (prefix, MutableShareFile.MAGIC)
1173     data_offset = MutableShareFile.DATA_OFFSET
1174     sharetype = data[data_offset:data_offset+1]
1175     assert sharetype == "\x00", "non-SDMF mutable shares not supported"
1176     (version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
1177      ig_datalen, offsets) = unpack_header(data[data_offset:])
1178     assert version == 0, "this function only handles v0 SDMF files"
1179     start = data_offset + offsets["share_data"]
1180     length = data_offset + offsets["enc_privkey"] - start
1181     return corrupt_field(data, start, length)
1182
1183 def _corrupt_share_data(data, debug=False):
1184     """Scramble the file data -- the field containing the share data itself
1185     will have one bit flipped or else will be changed to a random value."""
1186     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1187     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways, not v%d." % sharevernum
1188     if sharevernum == 1:
1189         sharedatasize = struct.unpack(">L", data[0x0c+0x08:0x0c+0x08+4])[0]
1190
1191         return corrupt_field(data, 0x0c+0x24, sharedatasize)
1192     else:
1193         sharedatasize = struct.unpack(">Q", data[0x0c+0x08:0x0c+0x0c+8])[0]
1194
1195         return corrupt_field(data, 0x0c+0x44, sharedatasize)
1196
1197 def _corrupt_crypttext_hash_tree(data, debug=False):
1198     """Scramble the file data -- the field containing the crypttext hash tree
1199     will have one bit flipped or else will be changed to a random value.
1200     """
1201     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1202     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1203     if sharevernum == 1:
1204         crypttexthashtreeoffset = struct.unpack(">L", data[0x0c+0x14:0x0c+0x14+4])[0]
1205         blockhashesoffset = struct.unpack(">L", data[0x0c+0x18:0x0c+0x18+4])[0]
1206     else:
1207         crypttexthashtreeoffset = struct.unpack(">Q", data[0x0c+0x24:0x0c+0x24+8])[0]
1208         blockhashesoffset = struct.unpack(">Q", data[0x0c+0x2c:0x0c+0x2c+8])[0]
1209
1210     return corrupt_field(data, 0x0c+crypttexthashtreeoffset, blockhashesoffset-crypttexthashtreeoffset, debug=debug)
1211
1212 def _corrupt_crypttext_hash_tree_byte_x221(data, debug=False):
1213     """Scramble the file data -- the byte at offset 0x221 will have its 7th
1214     (b1) bit flipped.
1215     """
1216     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1217     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1218     if debug:
1219         log.msg("original data: %r" % (data,))
1220     return data[:0x0c+0x221] + chr(ord(data[0x0c+0x221])^0x02) + data[0x0c+0x2210+1:]
1221
1222 def _corrupt_block_hashes(data, debug=False):
1223     """Scramble the file data -- the field containing the block hash tree
1224     will have one bit flipped or else will be changed to a random value.
1225     """
1226     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1227     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1228     if sharevernum == 1:
1229         blockhashesoffset = struct.unpack(">L", data[0x0c+0x18:0x0c+0x18+4])[0]
1230         sharehashesoffset = struct.unpack(">L", data[0x0c+0x1c:0x0c+0x1c+4])[0]
1231     else:
1232         blockhashesoffset = struct.unpack(">Q", data[0x0c+0x2c:0x0c+0x2c+8])[0]
1233         sharehashesoffset = struct.unpack(">Q", data[0x0c+0x34:0x0c+0x34+8])[0]
1234
1235     return corrupt_field(data, 0x0c+blockhashesoffset, sharehashesoffset-blockhashesoffset)
1236
1237 def _corrupt_share_hashes(data, debug=False):
1238     """Scramble the file data -- the field containing the share hash chain
1239     will have one bit flipped or else will be changed to a random value.
1240     """
1241     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1242     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1243     if sharevernum == 1:
1244         sharehashesoffset = struct.unpack(">L", data[0x0c+0x1c:0x0c+0x1c+4])[0]
1245         uriextoffset = struct.unpack(">L", data[0x0c+0x20:0x0c+0x20+4])[0]
1246     else:
1247         sharehashesoffset = struct.unpack(">Q", data[0x0c+0x34:0x0c+0x34+8])[0]
1248         uriextoffset = struct.unpack(">Q", data[0x0c+0x3c:0x0c+0x3c+8])[0]
1249
1250     return corrupt_field(data, 0x0c+sharehashesoffset, uriextoffset-sharehashesoffset)
1251
1252 def _corrupt_length_of_uri_extension(data, debug=False):
1253     """Scramble the file data -- the field showing the length of the uri
1254     extension will have one bit flipped or else will be changed to a random
1255     value."""
1256     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1257     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1258     if sharevernum == 1:
1259         uriextoffset = struct.unpack(">L", data[0x0c+0x20:0x0c+0x20+4])[0]
1260         return corrupt_field(data, uriextoffset, 4)
1261     else:
1262         uriextoffset = struct.unpack(">Q", data[0x0c+0x3c:0x0c+0x3c+8])[0]
1263         return corrupt_field(data, 0x0c+uriextoffset, 8)
1264
1265 def _corrupt_uri_extension(data, debug=False):
1266     """Scramble the file data -- the field containing the uri extension will
1267     have one bit flipped or else will be changed to a random value."""
1268     sharevernum = struct.unpack(">L", data[0x0c:0x0c+4])[0]
1269     assert sharevernum in (1, 2), "This test is designed to corrupt immutable shares of v1 or v2 in specific ways."
1270     if sharevernum == 1:
1271         uriextoffset = struct.unpack(">L", data[0x0c+0x20:0x0c+0x20+4])[0]
1272         uriextlen = struct.unpack(">L", data[0x0c+uriextoffset:0x0c+uriextoffset+4])[0]
1273     else:
1274         uriextoffset = struct.unpack(">Q", data[0x0c+0x3c:0x0c+0x3c+8])[0]
1275         uriextlen = struct.unpack(">Q", data[0x0c+uriextoffset:0x0c+uriextoffset+8])[0]
1276
1277     return corrupt_field(data, 0x0c+uriextoffset, uriextlen)