2 import os, stat, time, re, weakref
3 from allmydata.interfaces import RIStorageServer
4 from allmydata import node
6 from zope.interface import implements
7 from twisted.internet import reactor
8 from twisted.application.internet import TimerService
9 from foolscap import Referenceable
10 from foolscap.logging import log
11 from pycryptopp.publickey import rsa
14 from allmydata.storage import StorageServer
15 from allmydata.immutable.upload import Uploader
16 from allmydata.immutable.download import Downloader
17 from allmydata.immutable.filenode import FileNode, LiteralFileNode
18 from allmydata.offloaded import Helper
19 from allmydata.control import ControlServer
20 from allmydata.introducer.client import IntroducerClient
21 from allmydata.util import hashutil, base32, pollmixin, fileutil
22 from allmydata.uri import LiteralFileURI
23 from allmydata.dirnode import NewDirectoryNode
24 from allmydata.mutable.node import MutableFileNode, MutableWatcher
25 from allmydata.stats import StatsProvider
26 from allmydata.interfaces import IURI, INewDirectoryURI, IStatsProducer, \
27 IReadonlyNewDirectoryURI, IFileURI, IMutableFileURI, RIStubClient
35 class StubClient(Referenceable):
36 implements(RIStubClient)
39 return base32.b2a(os.urandom(hashutil.CRYPTO_VAL_SIZE)) + "\n"
41 class Client(node.Node, pollmixin.PollMixin):
42 implements(IStatsProducer)
44 PORTNUMFILE = "client.port"
47 SUICIDE_PREVENTION_HOTLINE_FILE = "suicide_prevention_hotline"
49 # This means that if a storage server treats me as though I were a
50 # 1.0.0 storage client, it will work as they expect.
51 OLDEST_SUPPORTED_VERSION = "1.0.0"
53 # this is a tuple of (needed, desired, total, max_segment_size). 'needed'
54 # is the number of shares required to reconstruct a file. 'desired' means
55 # that we will abort an upload unless we can allocate space for at least
56 # this many. 'total' is the total number of shares created by encoding.
57 # If everybody has room then this is is how many we will upload.
58 DEFAULT_ENCODING_PARAMETERS = {"k": 3,
61 "max_segment_size": 128*KiB,
64 def __init__(self, basedir="."):
65 node.Node.__init__(self, basedir)
66 self.started_timestamp = time.time()
67 self.logSource="Client"
68 self.init_introducer_client()
69 self.init_stats_provider()
70 self.init_lease_secret()
73 if self.get_config("helper", "enabled", False, boolean=True):
76 self._key_generator = None
77 key_gen_furl = self.get_config("client", "key_generator.furl", None)
79 self.init_key_gen(key_gen_furl)
80 # ControlServer and Helper are attached after Tub startup
81 self.init_ftp_server()
83 hotline_file = os.path.join(self.basedir,
84 self.SUICIDE_PREVENTION_HOTLINE_FILE)
85 if os.path.exists(hotline_file):
86 age = time.time() - os.stat(hotline_file)[stat.ST_MTIME]
87 self.log("hotline file noticed (%ds old), starting timer" % age)
88 hotline = TimerService(1.0, self._check_hotline, hotline_file)
89 hotline.setServiceParent(self)
91 webport = self.get_config("node", "web.port", None)
93 self.init_web(webport) # strports string
95 def read_old_config_files(self):
96 node.Node.read_old_config_files(self)
97 copy = self._copy_config_from_file
98 copy("introducer.furl", "client", "introducer.furl")
99 copy("helper.furl", "client", "helper.furl")
100 copy("key_generator.furl", "client", "key_generator.furl")
101 copy("stats_gatherer.furl", "client", "stats_gatherer.furl")
102 if os.path.exists(os.path.join(self.basedir, "no_storage")):
103 self.set_config("storage", "enabled", "false")
104 if os.path.exists(os.path.join(self.basedir, "readonly_storage")):
105 self.set_config("storage", "readonly", "true")
106 copy("sizelimit", "storage", "sizelimit")
107 if os.path.exists(os.path.join(self.basedir, "debug_discard_storage")):
108 self.set_config("storage", "debug_discard", "true")
109 if os.path.exists(os.path.join(self.basedir, "run_helper")):
110 self.set_config("helper", "enabled", "true")
112 def init_introducer_client(self):
113 self.introducer_furl = self.get_config("client", "introducer.furl")
114 ic = IntroducerClient(self.tub, self.introducer_furl,
116 str(allmydata.__version__),
117 str(self.OLDEST_SUPPORTED_VERSION))
118 self.introducer_client = ic
119 # hold off on starting the IntroducerClient until our tub has been
120 # started, so we'll have a useful address on our RemoteReference, so
121 # that the introducer's status page will show us.
122 d = self.when_tub_ready()
123 def _start_introducer_client(res):
124 ic.setServiceParent(self)
125 # nodes that want to upload and download will need storage servers
126 ic.subscribe_to("storage")
127 d.addCallback(_start_introducer_client)
128 d.addErrback(log.err, facility="tahoe.init",
129 level=log.BAD, umid="URyI5w")
131 def init_stats_provider(self):
132 gatherer_furl = self.get_config("client", "stats_gatherer.furl", None)
133 self.stats_provider = StatsProvider(self, gatherer_furl)
134 self.add_service(self.stats_provider)
135 self.stats_provider.register_producer(self)
138 return { 'node.uptime': time.time() - self.started_timestamp }
140 def init_lease_secret(self):
141 secret_s = self.get_or_create_private_config("secret", _make_secret)
142 self._lease_secret = base32.a2b(secret_s)
144 def init_storage(self):
145 # should we run a storage server (and publish it for others to use)?
146 if not self.get_config("storage", "enabled", True, boolean=True):
148 readonly = self.get_config("storage", "readonly", False, boolean=True)
150 storedir = os.path.join(self.basedir, self.STOREDIR)
153 data = self.get_config("storage", "sizelimit", None)
155 m = re.match(r"^(\d+)([kKmMgG]?[bB]?)$", data)
157 log.msg("SIZELIMIT_FILE contains unparseable value %s" % data)
159 number, suffix = m.groups()
160 suffix = suffix.upper()
161 if suffix.endswith("B"):
166 "G": 1000 * 1000 * 1000,
168 sizelimit = int(number) * multiplier
169 discard = self.get_config("storage", "debug_discard", False,
171 ss = StorageServer(storedir, sizelimit, discard, readonly,
174 d = self.when_tub_ready()
175 # we can't do registerReference until the Tub is ready
177 furl_file = os.path.join(self.basedir, "private", "storage.furl")
178 furl = self.tub.registerReference(ss, furlFile=furl_file)
179 ri_name = RIStorageServer.__remote_name__
180 self.introducer_client.publish(furl, "storage", ri_name)
181 d.addCallback(_publish)
182 d.addErrback(log.err, facility="tahoe.init",
183 level=log.BAD, umid="aLGBKw")
185 def init_client(self):
186 helper_furl = self.get_config("client", "helper.furl", None)
187 convergence_s = self.get_or_create_private_config('convergence', _make_secret)
188 self.convergence = base32.a2b(convergence_s)
189 self._node_cache = weakref.WeakValueDictionary() # uri -> node
190 self.add_service(Uploader(helper_furl, self.stats_provider))
191 self.download_cachedir = os.path.join(self.basedir,
192 "private", "cache", "download")
193 fileutil.make_dirs(self.download_cachedir)
194 self.add_service(Downloader(self.stats_provider))
195 self.add_service(MutableWatcher(self.stats_provider))
197 # we publish an empty object so that the introducer can count how
198 # many clients are connected and see what versions they're
201 furl = self.tub.registerReference(sc)
202 ri_name = RIStubClient.__remote_name__
203 self.introducer_client.publish(furl, "stub_client", ri_name)
204 d = self.when_tub_ready()
205 d.addCallback(_publish)
206 d.addErrback(log.err, facility="tahoe.init",
207 level=log.BAD, umid="OEHq3g")
209 def init_control(self):
210 d = self.when_tub_ready()
213 c.setServiceParent(self)
214 control_url = self.tub.registerReference(c)
215 self.write_private_config("control.furl", control_url + "\n")
216 d.addCallback(_publish)
217 d.addErrback(log.err, facility="tahoe.init",
218 level=log.BAD, umid="d3tNXA")
220 def init_helper(self):
221 d = self.when_tub_ready()
223 h = Helper(os.path.join(self.basedir, "helper"), self.stats_provider)
224 h.setServiceParent(self)
225 # TODO: this is confusing. BASEDIR/private/helper.furl is created
226 # by the helper. BASEDIR/helper.furl is consumed by the client
227 # who wants to use the helper. I like having the filename be the
228 # same, since that makes 'cp' work smoothly, but the difference
229 # between config inputs and generated outputs is hard to see.
230 helper_furlfile = os.path.join(self.basedir,
231 "private", "helper.furl")
232 self.tub.registerReference(h, furlFile=helper_furlfile)
233 d.addCallback(_publish)
234 d.addErrback(log.err, facility="tahoe.init",
235 level=log.BAD, umid="K0mW5w")
237 def init_key_gen(self, key_gen_furl):
238 d = self.when_tub_ready()
239 def _subscribe(self):
240 self.tub.connectTo(key_gen_furl, self._got_key_generator)
241 d.addCallback(_subscribe)
242 d.addErrback(log.err, facility="tahoe.init",
243 level=log.BAD, umid="z9DMzw")
245 def _got_key_generator(self, key_generator):
246 self._key_generator = key_generator
247 key_generator.notifyOnDisconnect(self._lost_key_generator)
249 def _lost_key_generator(self):
250 self._key_generator = None
252 def init_web(self, webport):
253 self.log("init_web(webport=%s)", args=(webport,))
255 from allmydata.webish import WebishServer
256 nodeurl_path = os.path.join(self.basedir, "node.url")
257 staticdir = self.get_config("node", "web.static", "public_html")
258 staticdir = os.path.expanduser(staticdir)
259 ws = WebishServer(webport, nodeurl_path, staticdir)
262 def init_ftp_server(self):
263 if self.get_config("ftpd", "enabled", False, boolean=True):
264 accountfile = self.get_config("ftpd", "ftp.accounts.file", None)
265 accounturl = self.get_config("ftpd", "ftp.accounts.url", None)
266 ftp_portstr = self.get_config("ftpd", "ftp.port", "8021")
268 from allmydata import ftpd
269 s = ftpd.FTPServer(self, accountfile, accounturl, ftp_portstr)
270 s.setServiceParent(self)
272 def _check_hotline(self, hotline_file):
273 if os.path.exists(hotline_file):
274 mtime = os.stat(hotline_file)[stat.ST_MTIME]
275 if mtime > time.time() - 20.0:
278 self.log("hotline file too old, shutting down")
280 self.log("hotline file missing, shutting down")
283 def get_all_peerids(self):
284 return self.introducer_client.get_all_peerids()
285 def get_nickname_for_peerid(self, peerid):
286 return self.introducer_client.get_nickname_for_peerid(peerid)
288 def get_permuted_peers(self, service_name, key):
290 @return: list of (peerid, connection,)
292 assert isinstance(service_name, str)
293 assert isinstance(key, str)
294 return self.introducer_client.get_permuted_peers(service_name, key)
296 def get_encoding_parameters(self):
297 return self.DEFAULT_ENCODING_PARAMETERS
299 def connected_to_introducer(self):
300 if self.introducer_client:
301 return self.introducer_client.connected_to_introducer()
304 def get_renewal_secret(self):
305 return hashutil.my_renewal_secret_hash(self._lease_secret)
307 def get_cancel_secret(self):
308 return hashutil.my_cancel_secret_hash(self._lease_secret)
310 def debug_wait_for_client_connections(self, num_clients):
311 """Return a Deferred that fires (with None) when we have connections
312 to the given number of peers. Useful for tests that set up a
313 temporary test network and need to know when it is safe to proceed
314 with an upload or download."""
316 current_clients = list(self.get_all_peerids())
317 return len(current_clients) >= num_clients
318 d = self.poll(_check, 0.5)
319 d.addCallback(lambda res: None)
323 # these four methods are the primitives for creating filenodes and
324 # dirnodes. The first takes a URI and produces a filenode or (new-style)
325 # dirnode. The other three create brand-new filenodes/dirnodes.
327 def create_node_from_uri(self, u):
328 # this returns synchronously.
331 if u_s not in self._node_cache:
332 if IReadonlyNewDirectoryURI.providedBy(u):
333 # new-style read-only dirnodes
334 node = NewDirectoryNode(self).init_from_uri(u)
335 elif INewDirectoryURI.providedBy(u):
337 node = NewDirectoryNode(self).init_from_uri(u)
338 elif IFileURI.providedBy(u):
339 if isinstance(u, LiteralFileURI):
340 node = LiteralFileNode(u, self) # LIT
342 cachefile = os.path.join(self.download_cachedir,
343 base32.b2a(u.storage_index))
344 # TODO: cachefile manager, weakref, expire policy
345 node = FileNode(u, self, cachefile) # CHK
347 assert IMutableFileURI.providedBy(u), u
348 node = MutableFileNode(self).init_from_uri(u)
349 self._node_cache[u_s] = node
350 return self._node_cache[u_s]
352 def notify_publish(self, publish_status, size):
353 self.getServiceNamed("mutable-watcher").notify_publish(publish_status,
355 def notify_retrieve(self, retrieve_status):
356 self.getServiceNamed("mutable-watcher").notify_retrieve(retrieve_status)
357 def notify_mapupdate(self, update_status):
358 self.getServiceNamed("mutable-watcher").notify_mapupdate(update_status)
360 def create_empty_dirnode(self):
361 n = NewDirectoryNode(self)
362 d = n.create(self._generate_pubprivkeys)
363 d.addCallback(lambda res: n)
366 def create_mutable_file(self, contents=""):
367 n = MutableFileNode(self)
368 d = n.create(contents, self._generate_pubprivkeys)
369 d.addCallback(lambda res: n)
372 def _generate_pubprivkeys(self, key_size):
373 if self._key_generator:
374 d = self._key_generator.callRemote('get_rsa_key_pair', key_size)
375 def make_key_objs((verifying_key, signing_key)):
376 v = rsa.create_verifying_key_from_string(verifying_key)
377 s = rsa.create_signing_key_from_string(signing_key)
379 d.addCallback(make_key_objs)
382 # RSA key generation for a 2048 bit key takes between 0.8 and 3.2
384 signer = rsa.generate(key_size)
385 verifier = signer.get_verifying_key()
386 return verifier, signer
388 def upload(self, uploadable):
389 uploader = self.getServiceNamed("uploader")
390 return uploader.upload(uploadable)
393 def list_all_upload_statuses(self):
394 uploader = self.getServiceNamed("uploader")
395 return uploader.list_all_upload_statuses()
397 def list_all_download_statuses(self):
398 downloader = self.getServiceNamed("downloader")
399 return downloader.list_all_download_statuses()
401 def list_all_mapupdate_statuses(self):
402 watcher = self.getServiceNamed("mutable-watcher")
403 return watcher.list_all_mapupdate_statuses()
404 def list_all_publish_statuses(self):
405 watcher = self.getServiceNamed("mutable-watcher")
406 return watcher.list_all_publish_statuses()
407 def list_all_retrieve_statuses(self):
408 watcher = self.getServiceNamed("mutable-watcher")
409 return watcher.list_all_retrieve_statuses()
411 def list_all_helper_statuses(self):
413 helper = self.getServiceNamed("helper")
416 return helper.get_all_upload_statuses()