def init_from_human_encoding(cls, uri):
mo = cls.HUMAN_RE.search(uri)
if not mo:
raise BadURIError("'%s' doesn't look like a %s cap" % (uri, cls))
return cls(
base32.a2b(mo.group(1)), base32.a2b(mo.group(2)), int(mo.group(3)), int(mo.group(4)), int(mo.group(5))
)
def __init__(self, key_s, ann):
self.key_s = key_s
self.announcement = ann
assert "anonymous-storage-FURL" in ann, ann
furl = str(ann["anonymous-storage-FURL"])
m = re.match(r'pb://(\w+)@', furl)
assert m, furl
tubid_s = m.group(1).lower()
self._tubid = base32.a2b(tubid_s)
assert "permutation-seed-base32" in ann, ann
ps = base32.a2b(str(ann["permutation-seed-base32"]))
self._permutation_seed = ps
if key_s:
self._long_description = key_s
if key_s.startswith("v0-"):
# remove v0- prefix from abbreviated name
self._short_description = key_s[3:3+8]
else:
self._short_description = key_s[:8]
else:
self._long_description = tubid_s
self._short_description = tubid_s[:6]
self.announcement_time = time.time()
self.last_connect_time = None
self.last_loss_time = None
self.remote_host = None
self.rref = None
self._is_connected = False
self._reconnector = None
self._trigger_cb = None
def dump_cap(options):
from allmydata import uri
from allmydata.util import base32
from base64 import b32decode
import urlparse, urllib
out = options.stdout
cap = options.cap
nodeid = None
if options['nodeid']:
nodeid = b32decode(options['nodeid'].upper())
secret = None
if options['client-secret']:
secret = base32.a2b(options['client-secret'])
elif options['client-dir']:
secretfile = os.path.join(options['client-dir'], "private", "secret")
try:
secret = base32.a2b(open(secretfile, "r").read().strip())
except EnvironmentError:
pass
if cap.startswith("http"):
scheme, netloc, path, params, query, fragment = urlparse.urlparse(cap)
assert path.startswith("/uri/")
cap = urllib.unquote(path[len("/uri/"):])
u = uri.from_string(cap)
print >>out
dump_uri_instance(u, nodeid, secret, out)
def init_secrets(self):
lease_s = self.get_or_create_private_config("secret", _make_secret)
lease_secret = base32.a2b(lease_s)
convergence_s = self.get_or_create_private_config('convergence',
_make_secret)
self.convergence = base32.a2b(convergence_s)
self._secret_holder = SecretHolder(lease_secret, self.convergence)
def child_event_json(self, ctx):
inevow.IRequest(ctx).setHeader("content-type", "text/plain")
data = { } # this will be returned to the GET
ds = self.download_status
data["read"] = self._find_overlap(ds.read_events,
"start_time", "finish_time")
data["segment"] = self._find_overlap(ds.segment_events,
"start_time", "finish_time")
data["dyhb"] = self._find_overlap(ds.dyhb_requests,
"start_time", "finish_time")
data["block"],data["block_rownums"] = self._find_overlap_requests(ds.block_requests)
servernums = {}
serverid_strings = {}
for d_ev in data["dyhb"]:
if d_ev["serverid"] not in servernums:
servernum = len(servernums)
servernums[d_ev["serverid"]] = servernum
#title= "%s: %s" % ( ",".join([str(shnum) for shnum in shnums]))
serverid_strings[servernum] = d_ev["serverid"][:4]
data["server_info"] = dict([(serverid, {"num": servernums[serverid],
"color": self.color(base32.a2b(serverid)),
"short": serverid_strings[servernums[serverid]],
})
for serverid in servernums.keys()])
data["num_serverids"] = len(serverid_strings)
# we'd prefer the keys of serverids[] to be ints, but this is JSON,
# so they get converted to strings. Stupid javascript.
data["serverids"] = serverid_strings
data["bounds"] = {"min": ds.first_timestamp, "max": ds.last_timestamp}
return simplejson.dumps(data, indent=1) + "\n"
def test_static_servers(self):
broker = StorageFarmBroker(True, lambda h: Mock())
key_s = 'v0-1234-1'
servers_yaml = """\
storage:
v0-1234-1:
ann:
anonymous-storage-FURL: pb://ge@nowhere/fake
permutation-seed-base32: aaaaaaaaaaaaaaaaaaaaaaaa
"""
servers = yamlutil.safe_load(servers_yaml)
permseed = base32.a2b("aaaaaaaaaaaaaaaaaaaaaaaa")
broker.set_static_servers(servers["storage"])
self.failUnlessEqual(len(broker._static_server_ids), 1)
s = broker.servers[key_s]
self.failUnlessEqual(s.announcement,
servers["storage"]["v0-1234-1"]["ann"])
self.failUnlessEqual(s.get_serverid(), key_s)
self.assertEqual(s.get_permutation_seed(), permseed)
# if the Introducer announces the same thing, we're supposed to
# ignore it
ann2 = {
"service-name": "storage",
"anonymous-storage-FURL": "pb://{}@nowhere/fake2".format(base32.b2a(str(1))),
"permutation-seed-base32": "bbbbbbbbbbbbbbbbbbbbbbbb",
}
broker._got_announcement(key_s, ann2)
s2 = broker.servers[key_s]
self.assertIdentical(s2, s)
self.assertEqual(s2.get_permutation_seed(), permseed)
def __init__(self, server_id, ann, tub_maker, handler_overrides):
service.MultiService.__init__(self)
assert isinstance(server_id, str)
self._server_id = server_id
self.announcement = ann
self._tub_maker = tub_maker
self._handler_overrides = handler_overrides
assert "anonymous-storage-FURL" in ann, ann
furl = str(ann["anonymous-storage-FURL"])
m = re.match(r'pb://(\w+)@', furl)
assert m, furl
tubid_s = m.group(1).lower()
self._tubid = base32.a2b(tubid_s)
if "permutation-seed-base32" in ann:
ps = base32.a2b(str(ann["permutation-seed-base32"]))
elif re.search(r'^v0-[0-9a-zA-Z]{52}$', server_id):
ps = base32.a2b(server_id[3:])
else:
log.msg("unable to parse serverid '%(server_id)s as pubkey, "
"hashing it to get permutation-seed, "
"may not converge with other clients",
server_id=server_id,
facility="tahoe.storage_broker",
level=log.UNUSUAL, umid="qu86tw")
ps = hashlib.sha256(server_id).digest()
self._permutation_seed = ps
assert server_id
self._long_description = server_id
if server_id.startswith("v0-"):
# remove v0- prefix from abbreviated name
self._short_description = server_id[3:3+8]
else:
self._short_description = server_id[:8]
self.last_connect_time = None
self.last_loss_time = None
self.remote_host = None
self.rref = None
self._is_connected = False
self._reconnector = None
self._trigger_cb = None
self._on_status_changed = ObserverList()
def test_static_permutation_seed_pubkey(self):
broker = StorageFarmBroker(True, lambda h: Mock())
server_id = "v0-4uazse3xb6uu5qpkb7tel2bm6bpea4jhuigdhqcuvvse7hugtsia"
k = "4uazse3xb6uu5qpkb7tel2bm6bpea4jhuigdhqcuvvse7hugtsia"
ann = {
"anonymous-storage-FURL": "pb://abcde@nowhere/fake",
}
broker.set_static_servers({server_id.decode("ascii"): {"ann": ann}})
s = broker.servers[server_id]
self.assertEqual(s.get_permutation_seed(), base32.a2b(k))
def test_static_permutation_seed_explicit(self):
broker = StorageFarmBroker(True, lambda h: Mock())
server_id = "v0-4uazse3xb6uu5qpkb7tel2bm6bpea4jhuigdhqcuvvse7hugtsia"
k = "w5gl5igiexhwmftwzhai5jy2jixn7yx7"
ann = {
"anonymous-storage-FURL": "pb://abcde@nowhere/fake",
"permutation-seed-base32": k,
}
broker.set_static_servers({server_id.decode("ascii"): {"ann": ann}})
s = broker.servers[server_id]
self.assertEqual(s.get_permutation_seed(), base32.a2b(k))
def childFactory(self, ctx, name):
if not name:
return self
# /operation/$OPHANDLE/$STORAGEINDEX provides detailed information
# about a specific file or directory that was checked
si = base32.a2b(name)
s = self.monitor.get_status()
try:
results = s.get_results_for_storage_index(si)
return CheckAndRepairResultsRenderer(self.client, results)
except KeyError:
raise WebError("No detailed results for SI %s" % html.escape(name),
http.NOT_FOUND)
def unsign_from_foolscap(ann_t):
(msg, sig_vs, claimed_key_vs) = ann_t
if not sig_vs or not claimed_key_vs:
raise UnknownKeyError("only signed announcements recognized")
if not sig_vs.startswith("v0-"):
raise UnknownKeyError("only v0- signatures recognized")
if not claimed_key_vs.startswith("v0-"):
raise UnknownKeyError("only v0- keys recognized")
claimed_key = keyutil.parse_pubkey("pub-"+claimed_key_vs)
sig_bytes = base32.a2b(keyutil.remove_prefix(sig_vs, "v0-"))
claimed_key.verify(sig_bytes, msg)
key_vs = claimed_key_vs
ann = json.loads(msg.decode("utf-8"))
return (ann, key_vs)
def read_blacklist(self):
try:
current_mtime = os.stat(self.blacklist_fn).st_mtime
except EnvironmentError:
# unreadable blacklist file means no blacklist
self.entries.clear()
return
try:
if self.last_mtime is None or current_mtime > self.last_mtime:
self.entries.clear()
for line in open(self.blacklist_fn, "r").readlines():
line = line.strip()
if not line or line.startswith("#"):
continue
si_s, reason = line.split(None, 1)
si = base32.a2b(si_s) # must be valid base32
self.entries[si] = reason
self.last_mtime = current_mtime
except Exception, e:
twisted_log.err(e, "unparseable blacklist file")
raise
def get_serverid_from_furl(furl):
m = re.match(r'pb://(\w+)@', furl)
assert m, furl
id = m.group(1).lower()
return base32.a2b(id)
def test_known_answers(self):
"""
Verify backwards compatibility by comparing hash outputs for some
well-known (to us) inputs.
"""
self._testknown(
hashutil.block_hash,
b"msjr5bh4evuh7fa3zw7uovixfbvlnstr5b65mrerwfnvjxig2jvq", b"")
self._testknown(
hashutil.uri_extension_hash,
b"wthsu45q7zewac2mnivoaa4ulh5xvbzdmsbuyztq2a5fzxdrnkka", b"")
self._testknown(
hashutil.plaintext_hash,
b"5lz5hwz3qj3af7n6e3arblw7xzutvnd3p3fjsngqjcb7utf3x3da", b"")
self._testknown(
hashutil.crypttext_hash,
b"itdj6e4njtkoiavlrmxkvpreosscssklunhwtvxn6ggho4rkqwga", b"")
self._testknown(
hashutil.crypttext_segment_hash,
b"aovy5aa7jej6ym5ikgwyoi4pxawnoj3wtaludjz7e2nb5xijb7aa", b"")
self._testknown(
hashutil.plaintext_segment_hash,
b"4fdgf6qruaisyukhqcmoth4t3li6bkolbxvjy4awwcpprdtva7za", b"")
self._testknown(hashutil.convergence_hash,
b"3mo6ni7xweplycin6nowynw2we", 3, 10, 100, b"",
b"converge")
self._testknown(
hashutil.my_renewal_secret_hash,
b"ujhr5k5f7ypkp67jkpx6jl4p47pyta7hu5m527cpcgvkafsefm6q", b"")
self._testknown(
hashutil.my_cancel_secret_hash,
b"rjwzmafe2duixvqy6h47f5wfrokdziry6zhx4smew4cj6iocsfaa", b"")
self._testknown(
hashutil.file_renewal_secret_hash,
b"hzshk2kf33gzbd5n3a6eszkf6q6o6kixmnag25pniusyaulqjnia", b"",
b"si")
self._testknown(
hashutil.file_cancel_secret_hash,
b"bfciwvr6w7wcavsngxzxsxxaszj72dej54n4tu2idzp6b74g255q", b"",
b"si")
self._testknown(
hashutil.bucket_renewal_secret_hash,
b"e7imrzgzaoashsncacvy3oysdd2m5yvtooo4gmj4mjlopsazmvuq", b"",
b"\x00" * 20)
self._testknown(
hashutil.bucket_cancel_secret_hash,
b"dvdujeyxeirj6uux6g7xcf4lvesk632aulwkzjar7srildvtqwma", b"",
b"\x00" * 20)
self._testknown(
hashutil.hmac,
b"c54ypfi6pevb3nvo6ba42jtglpkry2kbdopqsi7dgrm4r7tw5sra", b"tag",
b"")
self._testknown(hashutil.mutable_rwcap_key_hash,
b"6rvn2iqrghii5n4jbbwwqqsnqu", b"iv", b"wk")
self._testknown(hashutil.ssk_writekey_hash,
b"ykpgmdbpgbb6yqz5oluw2q26ye", b"")
self._testknown(
hashutil.ssk_write_enabler_master_hash,
b"izbfbfkoait4dummruol3gy2bnixrrrslgye6ycmkuyujnenzpia", b"")
self._testknown(
hashutil.ssk_write_enabler_hash,
b"fuu2dvx7g6gqu5x22vfhtyed7p4pd47y5hgxbqzgrlyvxoev62tq", b"wk",
b"\x00" * 20)
self._testknown(
hashutil.ssk_pubkey_fingerprint_hash,
b"3opzw4hhm2sgncjx224qmt5ipqgagn7h5zivnfzqycvgqgmgz35q", b"")
self._testknown(hashutil.ssk_readkey_hash,
b"vugid4as6qbqgeq2xczvvcedai", b"")
self._testknown(hashutil.ssk_readkey_data_hash,
b"73wsaldnvdzqaf7v4pzbr2ae5a", b"iv", b"rk")
self._testknown(hashutil.ssk_storage_index_hash,
b"j7icz6kigb6hxrej3tv4z7ayym", b"")
self._testknown(
hashutil.permute_server_hash,
b"kb4354zeeurpo3ze5e275wzbynm6hlap", # b32(expected)
b"SI", # peer selection index == storage_index
base32.a2b(b"u33m4y7klhz3bypswqkozwetvabelhxt"), # seed
)
def dump_MDMF_share(m, length, options):
from allmydata.mutable.layout import MDMFSlotReadProxy
from allmydata.util import base32, hashutil
from allmydata.uri import MDMFVerifierURI
from allmydata.util.encodingutil import quote_output, to_str
offset = m.DATA_OFFSET
out = options.stdout
f = open(options['filename'], "rb")
storage_index = None; shnum = 0
class ShareDumper(MDMFSlotReadProxy):
def _read(self, readvs, force_remote=False, queue=False):
data = []
for (where,length) in readvs:
f.seek(offset+where)
data.append(f.read(length))
return defer.succeed({shnum: data})
p = ShareDumper(None, storage_index, shnum)
def extract(func):
stash = []
# these methods return Deferreds, but we happen to know that they run
# synchronously when not actually talking to a remote server
d = func()
d.addCallback(stash.append)
return stash[0]
verinfo = extract(p.get_verinfo)
encprivkey = extract(p.get_encprivkey)
signature = extract(p.get_signature)
pubkey = extract(p.get_verification_key)
block_hash_tree = extract(p.get_blockhashes)
share_hash_chain = extract(p.get_sharehashes)
f.close()
(seqnum, root_hash, salt_to_use, segsize, datalen, k, N, prefix,
offsets) = verinfo
print >>out, " MDMF contents:"
print >>out, " seqnum: %d" % seqnum
print >>out, " root_hash: %s" % base32.b2a(root_hash)
#print >>out, " IV: %s" % base32.b2a(IV)
print >>out, " required_shares: %d" % k
print >>out, " total_shares: %d" % N
print >>out, " segsize: %d" % segsize
print >>out, " datalen: %d" % datalen
print >>out, " enc_privkey: %d bytes" % len(encprivkey)
print >>out, " pubkey: %d bytes" % len(pubkey)
print >>out, " signature: %d bytes" % len(signature)
share_hash_ids = ",".join([str(hid)
for hid in sorted(share_hash_chain.keys())])
print >>out, " share_hash_chain: %s" % share_hash_ids
print >>out, " block_hash_tree: %d nodes" % len(block_hash_tree)
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey)
u = MDMFVerifierURI(storage_index, fingerprint)
verify_cap = u.to_string()
print >>out, " verify-cap:", quote_output(verify_cap, quotemarks=False)
if options['offsets']:
# NOTE: this offset-calculation code is fragile, and needs to be
# merged with MutableShareFile's internals.
print >>out
print >>out, " Section Offsets:"
def printoffset(name, value, shift=0):
print >>out, "%s%.20s: %s (0x%x)" % (" "*shift, name, value, value)
printoffset("first lease", m.HEADER_SIZE, 2)
printoffset("share data", m.DATA_OFFSET, 2)
o_seqnum = m.DATA_OFFSET + struct.calcsize(">B")
printoffset("seqnum", o_seqnum, 4)
o_root_hash = m.DATA_OFFSET + struct.calcsize(">BQ")
printoffset("root_hash", o_root_hash, 4)
for k in ["enc_privkey", "share_hash_chain", "signature",
"verification_key", "verification_key_end",
"share_data", "block_hash_tree", "EOF"]:
name = {"share_data": "block data",
"verification_key": "pubkey",
"verification_key_end": "end of pubkey",
"EOF": "end of share data"}.get(k,k)
offset = m.DATA_OFFSET + offsets[k]
printoffset(name, offset, 4)
f = open(options['filename'], "rb")
printoffset("extra leases", m._read_extra_lease_offset(f) + 4, 2)
f.close()
print >>out
def parse_privkey(privkey_vs):
sk_bytes = a2b(remove_prefix(privkey_vs, "priv-v0-"))
sk = ed25519.SigningKey(sk_bytes)
vk_bytes = sk.get_verifying_key_bytes()
return (sk, "pub-v0-"+b2a(vk_bytes))
opts.parseOptions()
verbose = bool(opts["verbose"])
nodes = {}
for line in open(opts["nodeids"], "r").readlines():
line = line.strip()
if not line or line.startswith("#"):
continue
pieces = line.split(None, 1)
if len(pieces) == 2:
nodeid_s, nickname = pieces
else:
nodeid_s = pieces[0]
nickname = None
nodeid = base32.a2b(nodeid_s)
nodes[nodeid] = nickname
if opts["k"] != 3 or opts["N"] != 10:
print "note: using non-default k/N requires patching the Tahoe code"
print "src/allmydata/client.py line 55, DEFAULT_ENCODING_PARAMETERS"
convergence_file = os.path.expanduser(opts["convergence"])
convergence_s = open(convergence_file, "rb").read().strip()
convergence = base32.a2b(convergence_s)
def get_permuted_peers(key):
results = []
for nodeid in nodes:
permuted = sha.new(key + nodeid).digest()
results.append((permuted, nodeid))
def si_a2b(ascii_storageindex):
return base32.a2b(ascii_storageindex)
def dump_SDMF_share(m, length, options):
from allmydata.mutable.layout import unpack_share, unpack_header
from allmydata.mutable.common import NeedMoreDataError
from allmydata.util import base32, hashutil
from allmydata.uri import SSKVerifierURI
from allmydata.util.encodingutil import quote_output, to_str
offset = m.DATA_OFFSET
out = options.stdout
f = open(options['filename'], "rb")
f.seek(offset)
data = f.read(min(length, 2000))
f.close()
try:
pieces = unpack_share(data)
except NeedMoreDataError as e:
# retry once with the larger size
size = e.needed_bytes
f = open(options['filename'], "rb")
f.seek(offset)
data = f.read(min(length, size))
f.close()
pieces = unpack_share(data)
(seqnum, root_hash, IV, k, N, segsize, datalen,
pubkey, signature, share_hash_chain, block_hash_tree,
share_data, enc_privkey) = pieces
(ig_version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
ig_datalen, offsets) = unpack_header(data)
print(" SDMF contents:", file=out)
print(" seqnum: %d" % seqnum, file=out)
print(" root_hash: %s" % base32.b2a(root_hash), file=out)
print(" IV: %s" % base32.b2a(IV), file=out)
print(" required_shares: %d" % k, file=out)
print(" total_shares: %d" % N, file=out)
print(" segsize: %d" % segsize, file=out)
print(" datalen: %d" % datalen, file=out)
print(" enc_privkey: %d bytes" % len(enc_privkey), file=out)
print(" pubkey: %d bytes" % len(pubkey), file=out)
print(" signature: %d bytes" % len(signature), file=out)
share_hash_ids = ",".join(sorted([str(hid)
for hid in share_hash_chain.keys()]))
print(" share_hash_chain: %s" % share_hash_ids, file=out)
print(" block_hash_tree: %d nodes" % len(block_hash_tree), file=out)
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey)
u = SSKVerifierURI(storage_index, fingerprint)
verify_cap = u.to_string()
print(" verify-cap:", quote_output(verify_cap, quotemarks=False), file=out)
if options['offsets']:
# NOTE: this offset-calculation code is fragile, and needs to be
# merged with MutableShareFile's internals.
print(file=out)
print(" Section Offsets:", file=out)
def printoffset(name, value, shift=0):
print("%s%20s: %s (0x%x)" % (" "*shift, name, value, value), file=out)
printoffset("first lease", m.HEADER_SIZE)
printoffset("share data", m.DATA_OFFSET)
o_seqnum = m.DATA_OFFSET + struct.calcsize(">B")
printoffset("seqnum", o_seqnum, 2)
o_root_hash = m.DATA_OFFSET + struct.calcsize(">BQ")
printoffset("root_hash", o_root_hash, 2)
for k in ["signature", "share_hash_chain", "block_hash_tree",
"share_data",
"enc_privkey", "EOF"]:
name = {"share_data": "block data",
"EOF": "end of share data"}.get(k,k)
offset = m.DATA_OFFSET + offsets[k]
printoffset(name, offset, 2)
f = open(options['filename'], "rb")
printoffset("extra leases", m._read_extra_lease_offset(f) + 4)
f.close()
print(file=out)
def parse_pubkey(pubkey_vs):
vk_bytes = a2b(remove_prefix(pubkey_vs, "pub-v0-"))
return ed25519.VerifyingKey(vk_bytes)
def __attrs_post_init__(self):
if self.convergence is None:
convergence_s = self.config.get_private_config('convergence')
self.convergence = base32.a2b(convergence_s)
def parse_privkey(privkey_vs):
sk_bytes = a2b(remove_prefix(privkey_vs, "priv-v0-"))
sk = ed25519.SigningKey(sk_bytes)
vk_bytes = sk.get_verifying_key_bytes()
return (sk, "pub-v0-" + b2a(vk_bytes))
def dump_SDMF_share(m, length, options):
from allmydata.mutable.layout import unpack_share, unpack_header
from allmydata.mutable.common import NeedMoreDataError
from allmydata.util import base32, hashutil
from allmydata.uri import SSKVerifierURI
from allmydata.util.encodingutil import quote_output, to_str
offset = m.DATA_OFFSET
out = options.stdout
f = open(options['filename'], "rb")
f.seek(offset)
data = f.read(min(length, 2000))
f.close()
try:
pieces = unpack_share(data)
except NeedMoreDataError as e:
# retry once with the larger size
size = e.needed_bytes
f = open(options['filename'], "rb")
f.seek(offset)
data = f.read(min(length, size))
f.close()
pieces = unpack_share(data)
(seqnum, root_hash, IV, k, N, segsize, datalen, pubkey, signature,
share_hash_chain, block_hash_tree, share_data, enc_privkey) = pieces
(ig_version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
ig_datalen, offsets) = unpack_header(data)
print(" SDMF contents:", file=out)
print(" seqnum: %d" % seqnum, file=out)
print(" root_hash: %s" % base32.b2a(root_hash), file=out)
print(" IV: %s" % base32.b2a(IV), file=out)
print(" required_shares: %d" % k, file=out)
print(" total_shares: %d" % N, file=out)
print(" segsize: %d" % segsize, file=out)
print(" datalen: %d" % datalen, file=out)
print(" enc_privkey: %d bytes" % len(enc_privkey), file=out)
print(" pubkey: %d bytes" % len(pubkey), file=out)
print(" signature: %d bytes" % len(signature), file=out)
share_hash_ids = ",".join(
sorted([str(hid) for hid in share_hash_chain.keys()]))
print(" share_hash_chain: %s" % share_hash_ids, file=out)
print(" block_hash_tree: %d nodes" % len(block_hash_tree), file=out)
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey)
u = SSKVerifierURI(storage_index, fingerprint)
verify_cap = u.to_string()
print(" verify-cap:",
quote_output(verify_cap, quotemarks=False),
file=out)
if options['offsets']:
# NOTE: this offset-calculation code is fragile, and needs to be
# merged with MutableShareFile's internals.
print(file=out)
print(" Section Offsets:", file=out)
def printoffset(name, value, shift=0):
print("%s%20s: %s (0x%x)" % (" " * shift, name, value, value),
file=out)
printoffset("first lease", m.HEADER_SIZE)
printoffset("share data", m.DATA_OFFSET)
o_seqnum = m.DATA_OFFSET + struct.calcsize(">B")
printoffset("seqnum", o_seqnum, 2)
o_root_hash = m.DATA_OFFSET + struct.calcsize(">BQ")
printoffset("root_hash", o_root_hash, 2)
for k in [
"signature", "share_hash_chain", "block_hash_tree",
"share_data", "enc_privkey", "EOF"
]:
name = {
"share_data": "block data",
"EOF": "end of share data"
}.get(k, k)
offset = m.DATA_OFFSET + offsets[k]
printoffset(name, offset, 2)
f = open(options['filename'], "rb")
printoffset("extra leases", m._read_extra_lease_offset(f) + 4)
f.close()
print(file=out)
def test_a2b(self):
self.failUnlessEqual(base32.a2b(b"ci2a"), b"\x12\x34")
self.failUnlessRaises(AssertionError, base32.a2b, b"b0gus")
self.assertFalse(base32.could_be_base32_encoded(b"b0gus"))
print >> out, " datalen: %d" % datalen
print >> out, " enc_privkey: %d bytes" % len(enc_privkey)
print >> out, " pubkey: %d bytes" % len(pubkey)
print >> out, " signature: %d bytes" % len(signature)
share_hash_ids = ",".join(
sorted([str(hid) for hid in share_hash_chain.keys()]))
print >> out, " share_hash_chain: %s" % share_hash_ids
print >> out, " block_hash_tree: %d nodes" % len(block_hash_tree)
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey)
u = SSKVerifierURI(storage_index, fingerprint)
verify_cap = u.to_string()
print >> out, " verify-cap:", quote_output(verify_cap,
quotemarks=False)
if options['offsets']:
# NOTE: this offset-calculation code is fragile, and needs to be
# merged with MutableShareFile's internals.
print >> out
print >> out, " Section Offsets:"
def printoffset(name, value, shift=0):
print >> out, "%s%20s: %s (0x%x)" % (" " * shift, name, value,
value)
def parse_pubkey(pubkey_vs):
vk_bytes = a2b(remove_prefix(pubkey_vs, "pub-v0-"))
return ed25519.VerifyingKey(vk_bytes)
def init_from_string(cls, uri):
mo = cls.STRING_RE.search(uri)
if not mo:
raise BadURIError("'%s' doesn't look like a %s cap" % (uri, cls))
return cls(base32.a2b(mo.group(1)), base32.a2b(mo.group(2)),
int(mo.group(3)), int(mo.group(4)), int(mo.group(5)))
def init_from_string(cls, uri):
mo = cls.STRING_RE.search(uri)
if not mo:
raise BadURIError("'%s' doesn't look like a %s cap" % (uri, cls))
return cls(si_a2b(mo.group(1)), base32.a2b(mo.group(2)))
def si_a2b(ascii_storageindex):
return base32.a2b(ascii_storageindex)
print >>out, " datalen: %d" % datalen
print >>out, " enc_privkey: %d bytes" % len(enc_privkey)
print >>out, " pubkey: %d bytes" % len(pubkey)
print >>out, " signature: %d bytes" % len(signature)
share_hash_ids = ",".join(sorted([str(hid)
for hid in share_hash_chain.keys()]))
print >>out, " share_hash_chain: %s" % share_hash_ids
print >>out, " block_hash_tree: %d nodes" % len(block_hash_tree)
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey)
u = SSKVerifierURI(storage_index, fingerprint)
verify_cap = u.to_string()
print >>out, " verify-cap:", quote_output(verify_cap, quotemarks=False)
if options['offsets']:
# NOTE: this offset-calculation code is fragile, and needs to be
# merged with MutableShareFile's internals.
print >>out
print >>out, " Section Offsets:"
def printoffset(name, value, shift=0):
print >>out, "%s%20s: %s (0x%x)" % (" "*shift, name, value, value)
printoffset("first lease", m.HEADER_SIZE)
printoffset("share data", m.DATA_OFFSET)
o_seqnum = m.DATA_OFFSET + struct.calcsize(">B")
opts.parseOptions()
verbose = bool(opts["verbose"])
nodes = {}
for line in open(opts["nodeids"], "r").readlines():
line = line.strip()
if not line or line.startswith("#"):
continue
pieces = line.split(None, 1)
if len(pieces) == 2:
nodeid_s, nickname = pieces
else:
nodeid_s = pieces[0]
nickname = None
nodeid = base32.a2b(nodeid_s)
nodes[nodeid] = nickname
if opts["k"] != 3 or opts["N"] != 10:
print("note: using non-default k/N requires patching the Tahoe code")
print("src/allmydata/client.py line 55, DEFAULT_ENCODING_PARAMETERS")
convergence_file = os.path.expanduser(opts["convergence"])
convergence_s = open(convergence_file, "rb").read().strip()
convergence = base32.a2b(convergence_s)
def get_permuted_peers(key):
results = []
for nodeid in nodes:
permuted = hashlib.sha1(key + nodeid).digest()
def dump_immutable_chk_share(f, out, options):
from allmydata import uri
from allmydata.util import base32
from allmydata.immutable.layout import ReadBucketProxy
from allmydata.util.encodingutil import quote_output, to_str
# use a ReadBucketProxy to parse the bucket and find the uri extension
bp = ReadBucketProxy(None, '', '')
offsets = bp._parse_offsets(f.read_share_data(0, 0x44))
print >>out, "%20s: %d" % ("version", bp._version)
seek = offsets['uri_extension']
length = struct.unpack(bp._fieldstruct,
f.read_share_data(seek, bp._fieldsize))[0]
seek += bp._fieldsize
UEB_data = f.read_share_data(seek, length)
unpacked = uri.unpack_extension_readable(UEB_data)
keys1 = ("size", "num_segments", "segment_size",
"needed_shares", "total_shares")
keys2 = ("codec_name", "codec_params", "tail_codec_params")
keys3 = ("plaintext_hash", "plaintext_root_hash",
"crypttext_hash", "crypttext_root_hash",
"share_root_hash", "UEB_hash")
display_keys = {"size": "file_size"}
for k in keys1:
if k in unpacked:
dk = display_keys.get(k, k)
print >>out, "%20s: %s" % (dk, unpacked[k])
print >>out
for k in keys2:
if k in unpacked:
dk = display_keys.get(k, k)
print >>out, "%20s: %s" % (dk, unpacked[k])
print >>out
for k in keys3:
if k in unpacked:
dk = display_keys.get(k, k)
print >>out, "%20s: %s" % (dk, unpacked[k])
leftover = set(unpacked.keys()) - set(keys1 + keys2 + keys3)
if leftover:
print >>out
print >>out, "LEFTOVER:"
for k in sorted(leftover):
print >>out, "%20s: %s" % (k, unpacked[k])
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
uri_extension_hash = base32.a2b(unpacked["UEB_hash"])
u = uri.CHKFileVerifierURI(storage_index, uri_extension_hash,
unpacked["needed_shares"],
unpacked["total_shares"], unpacked["size"])
verify_cap = u.to_string()
print >>out, "%20s: %s" % ("verify-cap", quote_output(verify_cap, quotemarks=False))
sizes = {}
sizes['data'] = (offsets['plaintext_hash_tree'] -
offsets['data'])
sizes['validation'] = (offsets['uri_extension'] -
offsets['plaintext_hash_tree'])
sizes['uri-extension'] = len(UEB_data)
print >>out
print >>out, " Size of data within the share:"
for k in sorted(sizes):
print >>out, "%20s: %s" % (k, sizes[k])
if options['offsets']:
print >>out
print >>out, " Section Offsets:"
print >>out, "%20s: %s" % ("share data", f._data_offset)
for k in ["data", "plaintext_hash_tree", "crypttext_hash_tree",
"block_hashes", "share_hashes", "uri_extension"]:
name = {"data": "block data"}.get(k,k)
offset = f._data_offset + offsets[k]
print >>out, " %20s: %s (0x%x)" % (name, offset, offset)
print >>out, "%20s: %s" % ("leases", f._lease_offset)
def dump_MDMF_share(m, length, options):
from allmydata.mutable.layout import MDMFSlotReadProxy
from allmydata.util import base32, hashutil
from allmydata.uri import MDMFVerifierURI
from allmydata.util.encodingutil import quote_output, to_str
offset = m.DATA_OFFSET
out = options.stdout
f = open(options['filename'], "rb")
storage_index = None
shnum = 0
class ShareDumper(MDMFSlotReadProxy):
def _read(self, readvs, force_remote=False, queue=False):
data = []
for (where, length) in readvs:
f.seek(offset + where)
data.append(f.read(length))
return defer.succeed({shnum: data})
p = ShareDumper(None, storage_index, shnum)
def extract(func):
stash = []
# these methods return Deferreds, but we happen to know that they run
# synchronously when not actually talking to a remote server
d = func()
d.addCallback(stash.append)
return stash[0]
verinfo = extract(p.get_verinfo)
encprivkey = extract(p.get_encprivkey)
signature = extract(p.get_signature)
pubkey = extract(p.get_verification_key)
block_hash_tree = extract(p.get_blockhashes)
share_hash_chain = extract(p.get_sharehashes)
f.close()
(seqnum, root_hash, salt_to_use, segsize, datalen, k, N, prefix,
offsets) = verinfo
print >> out, " MDMF contents:"
print >> out, " seqnum: %d" % seqnum
print >> out, " root_hash: %s" % base32.b2a(root_hash)
#print >>out, " IV: %s" % base32.b2a(IV)
print >> out, " required_shares: %d" % k
print >> out, " total_shares: %d" % N
print >> out, " segsize: %d" % segsize
print >> out, " datalen: %d" % datalen
print >> out, " enc_privkey: %d bytes" % len(encprivkey)
print >> out, " pubkey: %d bytes" % len(pubkey)
print >> out, " signature: %d bytes" % len(signature)
share_hash_ids = ",".join(
[str(hid) for hid in sorted(share_hash_chain.keys())])
print >> out, " share_hash_chain: %s" % share_hash_ids
print >> out, " block_hash_tree: %d nodes" % len(block_hash_tree)
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey)
u = MDMFVerifierURI(storage_index, fingerprint)
verify_cap = u.to_string()
print >> out, " verify-cap:", quote_output(verify_cap,
quotemarks=False)
if options['offsets']:
# NOTE: this offset-calculation code is fragile, and needs to be
# merged with MutableShareFile's internals.
print >> out
print >> out, " Section Offsets:"
def printoffset(name, value, shift=0):
print >> out, "%s%.20s: %s (0x%x)" % (" " * shift, name, value,
value)
printoffset("first lease", m.HEADER_SIZE, 2)
printoffset("share data", m.DATA_OFFSET, 2)
o_seqnum = m.DATA_OFFSET + struct.calcsize(">B")
printoffset("seqnum", o_seqnum, 4)
o_root_hash = m.DATA_OFFSET + struct.calcsize(">BQ")
printoffset("root_hash", o_root_hash, 4)
for k in [
"enc_privkey", "share_hash_chain", "signature",
"verification_key", "verification_key_end", "share_data",
"block_hash_tree", "EOF"
]:
name = {
"share_data": "block data",
"verification_key": "pubkey",
"verification_key_end": "end of pubkey",
"EOF": "end of share data"
}.get(k, k)
offset = m.DATA_OFFSET + offsets[k]
printoffset(name, offset, 4)
f = open(options['filename'], "rb")
printoffset("extra leases", m._read_extra_lease_offset(f) + 4, 2)
f.close()
print >> out
def dump_immutable_chk_share(f, out, options):
from allmydata import uri
from allmydata.util import base32
from allmydata.immutable.layout import ReadBucketProxy
from allmydata.util.encodingutil import quote_output, to_str
# use a ReadBucketProxy to parse the bucket and find the uri extension
bp = ReadBucketProxy(None, None, '')
offsets = bp._parse_offsets(f.read_share_data(0, 0x44))
print >> out, "%20s: %d" % ("version", bp._version)
seek = offsets['uri_extension']
length = struct.unpack(bp._fieldstruct,
f.read_share_data(seek, bp._fieldsize))[0]
seek += bp._fieldsize
UEB_data = f.read_share_data(seek, length)
unpacked = uri.unpack_extension_readable(UEB_data)
keys1 = ("size", "num_segments", "segment_size", "needed_shares",
"total_shares")
keys2 = ("codec_name", "codec_params", "tail_codec_params")
keys3 = ("plaintext_hash", "plaintext_root_hash", "crypttext_hash",
"crypttext_root_hash", "share_root_hash", "UEB_hash")
display_keys = {"size": "file_size"}
for k in keys1:
if k in unpacked:
dk = display_keys.get(k, k)
print >> out, "%20s: %s" % (dk, unpacked[k])
print >> out
for k in keys2:
if k in unpacked:
dk = display_keys.get(k, k)
print >> out, "%20s: %s" % (dk, unpacked[k])
print >> out
for k in keys3:
if k in unpacked:
dk = display_keys.get(k, k)
print >> out, "%20s: %s" % (dk, unpacked[k])
leftover = set(unpacked.keys()) - set(keys1 + keys2 + keys3)
if leftover:
print >> out
print >> out, "LEFTOVER:"
for k in sorted(leftover):
print >> out, "%20s: %s" % (k, unpacked[k])
# the storage index isn't stored in the share itself, so we depend upon
# knowing the parent directory name to get it
pieces = options['filename'].split(os.sep)
if len(pieces) >= 2:
piece = to_str(pieces[-2])
if base32.could_be_base32_encoded(piece):
storage_index = base32.a2b(piece)
uri_extension_hash = base32.a2b(unpacked["UEB_hash"])
u = uri.CHKFileVerifierURI(storage_index, uri_extension_hash,
unpacked["needed_shares"],
unpacked["total_shares"],
unpacked["size"])
verify_cap = u.to_string()
print >> out, "%20s: %s" % (
"verify-cap", quote_output(verify_cap, quotemarks=False))
sizes = {}
sizes['data'] = (offsets['plaintext_hash_tree'] - offsets['data'])
sizes['validation'] = (offsets['uri_extension'] -
offsets['plaintext_hash_tree'])
sizes['uri-extension'] = len(UEB_data)
print >> out
print >> out, " Size of data within the share:"
for k in sorted(sizes):
print >> out, "%20s: %s" % (k, sizes[k])
if options['offsets']:
print >> out
print >> out, " Section Offsets:"
print >> out, "%20s: %s" % ("share data", f._data_offset)
for k in [
"data", "plaintext_hash_tree", "crypttext_hash_tree",
"block_hashes", "share_hashes", "uri_extension"
]:
name = {"data": "block data"}.get(k, k)
offset = f._data_offset + offsets[k]
print >> out, " %20s: %s (0x%x)" % (name, offset, offset)
print >> out, "%20s: %s" % ("leases", f._lease_offset)
def init_from_human_encoding(cls, uri):
mo = cls.HUMAN_RE.search(uri)
if not mo:
raise BadURIError("'%s' doesn't look like a %s cap" % (uri, cls))
return cls(si_a2b(mo.group(1)), base32.a2b(mo.group(2)))
