def _check_results(rres):
self.assertThat(IRepairResults.providedBy(rres), Equals(True))
self.assertThat(rres.get_successful(), Equals(True))
# TODO: examine results
self.copy_shares()
initial_shares = self.old_shares[0]
new_shares = self.old_shares[1]
# TODO: this really shouldn't change anything. When we implement
# a "minimal-bandwidth" repairer", change this test to assert:
#self.assertThat(new_shares, Equals(initial_shares))
# all shares should be in the same place as before
self.assertThat(set(initial_shares.keys()),
Equals(set(new_shares.keys())))
# but they should all be at a newer seqnum. The IV will be
# different, so the roothash will be too.
for key in initial_shares:
(version0, seqnum0, root_hash0, IV0, k0, N0, segsize0,
datalen0, o0) = unpack_header(initial_shares[key])
(version1, seqnum1, root_hash1, IV1, k1, N1, segsize1,
datalen1, o1) = unpack_header(new_shares[key])
self.assertThat(version0, Equals(version1))
self.assertThat(seqnum0 + 1, Equals(seqnum1))
self.assertThat(k0, Equals(k1))
self.assertThat(N0, Equals(N1))
self.assertThat(segsize0, Equals(segsize1))
self.assertThat(datalen0, Equals(datalen1))
def _got_results_one_share(self, shnum, data, peerid, lp):
self.log(format="_got_results: got shnum #%(shnum)d from peerid %(peerid)s",
shnum=shnum,
peerid=idlib.shortnodeid_b2a(peerid),
level=log.NOISY,
parent=lp)
# this might raise NeedMoreDataError, if the pubkey and signature
# live at some weird offset. That shouldn't happen, so I'm going to
# treat it as a bad share.
(seqnum, root_hash, IV, k, N, segsize, datalength,
pubkey_s, signature, prefix) = unpack_prefix_and_signature(data)
if not self._node.get_pubkey():
fingerprint = hashutil.ssk_pubkey_fingerprint_hash(pubkey_s)
assert len(fingerprint) == 32
if fingerprint != self._node.get_fingerprint():
raise CorruptShareError(peerid, shnum,
"pubkey doesn't match fingerprint")
self._node._populate_pubkey(self._deserialize_pubkey(pubkey_s))
if self._need_privkey:
self._try_to_extract_privkey(data, peerid, shnum, lp)
(ig_version, ig_seqnum, ig_root_hash, ig_IV, ig_k, ig_N,
ig_segsize, ig_datalen, offsets) = unpack_header(data)
offsets_tuple = tuple( [(key,value) for key,value in offsets.items()] )
verinfo = (seqnum, root_hash, IV, segsize, datalength, k, N, prefix,
offsets_tuple)
if verinfo not in self._valid_versions:
# it's a new pair. Verify the signature.
valid = self._node.get_pubkey().verify(prefix, signature)
if not valid:
raise CorruptShareError(peerid, shnum, "signature is invalid")
# ok, it's a valid verinfo. Add it to the list of validated
# versions.
self.log(" found valid version %d-%s from %s-sh%d: %d-%d/%d/%d"
% (seqnum, base32.b2a(root_hash)[:4],
idlib.shortnodeid_b2a(peerid), shnum,
k, N, segsize, datalength),
parent=lp)
self._valid_versions.add(verinfo)
# We now know that this is a valid candidate verinfo.
if (peerid, shnum) in self._servermap.bad_shares:
# we've been told that the rest of the data in this share is
# unusable, so don't add it to the servermap.
self.log("but we've been told this is a bad share",
parent=lp, level=log.UNUSUAL)
return verinfo
# Add the info to our servermap.
timestamp = time.time()
self._servermap.add_new_share(peerid, shnum, verinfo, timestamp)
# and the versionmap
self.versionmap.add(verinfo, (shnum, peerid, timestamp))
return verinfo
def get_roothash_for(self, index):
# return the roothash for the first share we see in the saved set
shares = self._copied_shares[index]
for peerid in shares:
for shnum in shares[peerid]:
share = shares[peerid][shnum]
(version, seqnum, root_hash, IV, k, N, segsize, datalen, o) = unpack_header(share)
return root_hash
def get_roothash_for(self, index):
# return the roothash for the first share we see in the saved set
shares = self._copied_shares[index]
for peerid in shares:
for shnum in shares[peerid]:
share = shares[peerid][shnum]
(version, seqnum, root_hash, IV, k, N, segsize, datalen, o) = \
unpack_header(share)
return root_hash
def corrupt_share(options):
import random
from allmydata.storage.mutable import MutableShareFile
from allmydata.storage.immutable import ShareFile
from allmydata.mutable.layout import unpack_header
from allmydata.immutable.layout import ReadBucketProxy
out = options.stdout
fn = options['filename']
assert options["offset"] == "block-random", "other offsets not implemented"
# first, what kind of share is it?
def flip_bit(start, end):
offset = random.randrange(start, end)
bit = random.randrange(0, 8)
print("[%d..%d): %d.b%d" % (start, end, offset, bit), file=out)
f = open(fn, "rb+")
f.seek(offset)
d = f.read(1)
d = bchr(ord(d) ^ 0x01)
f.seek(offset)
f.write(d)
f.close()
with open(fn, "rb") as f:
prefix = f.read(32)
if MutableShareFile.is_valid_header(prefix):
# mutable
m = MutableShareFile(fn)
with open(fn, "rb") as f:
f.seek(m.DATA_OFFSET)
# Read enough data to get a mutable header to unpack.
data = f.read(2000)
# make sure this slot contains an SMDF share
assert data[
0:1] == b"\x00", "non-SDMF mutable shares not supported"
f.close()
(version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
ig_datalen, offsets) = unpack_header(data)
assert version == 0, "we only handle v0 SDMF files"
start = m.DATA_OFFSET + offsets["share_data"]
end = m.DATA_OFFSET + offsets["enc_privkey"]
flip_bit(start, end)
else:
# otherwise assume it's immutable
f = ShareFile(fn)
bp = ReadBucketProxy(None, None, '')
offsets = bp._parse_offsets(f.read_share_data(0, 0x24))
start = f._data_offset + offsets["data"]
end = f._data_offset + offsets["plaintext_hash_tree"]
flip_bit(start, end)
def _corrupt_mutable_share_data(data, debug=False):
prefix = data[:32]
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)
data_offset = MutableShareFile.DATA_OFFSET
sharetype = data[data_offset:data_offset+1]
assert sharetype == "\x00", "non-SDMF mutable shares not supported"
(version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
ig_datalen, offsets) = unpack_header(data[data_offset:])
assert version == 0, "this function only handles v0 SDMF files"
start = data_offset + offsets["share_data"]
length = data_offset + offsets["enc_privkey"] - start
return corrupt_field(data, start, length)
def _corrupt_mutable_share_data(data, debug=False):
prefix = data[:32]
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)
data_offset = MutableShareFile.DATA_OFFSET
sharetype = data[data_offset:data_offset+1]
assert sharetype == "\x00", "non-SDMF mutable shares not supported"
(version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
ig_datalen, offsets) = unpack_header(data[data_offset:])
assert version == 0, "this function only handles v0 SDMF files"
start = data_offset + offsets["share_data"]
length = data_offset + offsets["enc_privkey"] - start
return corrupt_field(data, start, length)
def corrupt_share(options):
import random
from allmydata.storage.mutable import MutableShareFile
from allmydata.storage.immutable import ShareFile
from allmydata.mutable.layout import unpack_header
from allmydata.immutable.layout import ReadBucketProxy
out = options.stdout
fn = options['filename']
assert options["offset"] == "block-random", "other offsets not implemented"
# first, what kind of share is it?
def flip_bit(start, end):
offset = random.randrange(start, end)
bit = random.randrange(0, 8)
print >>out, "[%d..%d): %d.b%d" % (start, end, offset, bit)
f = open(fn, "rb+")
f.seek(offset)
d = f.read(1)
d = chr(ord(d) ^ 0x01)
f.seek(offset)
f.write(d)
f.close()
f = open(fn, "rb")
prefix = f.read(32)
f.close()
if prefix == MutableShareFile.MAGIC:
# mutable
m = MutableShareFile(fn)
f = open(fn, "rb")
f.seek(m.DATA_OFFSET)
data = f.read(2000)
# make sure this slot contains an SMDF share
assert data[0] == "\x00", "non-SDMF mutable shares not supported"
f.close()
(version, ig_seqnum, ig_roothash, ig_IV, ig_k, ig_N, ig_segsize,
ig_datalen, offsets) = unpack_header(data)
assert version == 0, "we only handle v0 SDMF files"
start = m.DATA_OFFSET + offsets["share_data"]
end = m.DATA_OFFSET + offsets["enc_privkey"]
flip_bit(start, end)
else:
# otherwise assume it's immutable
f = ShareFile(fn)
bp = ReadBucketProxy(None, '', '')
offsets = bp._parse_offsets(f.read_share_data(0, 0x24))
start = f._data_offset + offsets["data"]
end = f._data_offset + offsets["plaintext_hash_tree"]
flip_bit(start, end)
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_bytes
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" % unicode(base32.b2a(root_hash), "utf-8"),
file=out)
print(" IV: %s" % unicode(base32.b2a(IV), "utf-8"), 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_bytes(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)
try:
pieces = unpack_share(data)
except NeedMoreDataError, 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 >>out, " SDMF 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(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
try:
pieces = unpack_share(data)
except NeedMoreDataError, 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 >>out, " SDMF 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(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
def _generate_shares(self, shares_and_shareids):
# this sets self.shares and self.root_hash
self.log("_generate_shares")
self._status.set_status("Generating Shares")
started = time.time()
# we should know these by now
privkey = self._privkey
encprivkey = self._encprivkey
pubkey = self._pubkey
(shares, share_ids) = shares_and_shareids
assert len(shares) == len(share_ids)
assert len(shares) == self.total_shares
all_shares = {}
block_hash_trees = {}
share_hash_leaves = [None] * len(shares)
for i in range(len(shares)):
share_data = shares[i]
shnum = share_ids[i]
all_shares[shnum] = share_data
# build the block hash tree. SDMF has only one leaf.
leaves = [hashutil.block_hash(share_data)]
t = hashtree.HashTree(leaves)
block_hash_trees[shnum] = list(t)
share_hash_leaves[shnum] = t[0]
for leaf in share_hash_leaves:
assert leaf is not None
share_hash_tree = hashtree.HashTree(share_hash_leaves)
share_hash_chain = {}
for shnum in range(self.total_shares):
needed_hashes = share_hash_tree.needed_hashes(shnum)
share_hash_chain[shnum] = dict([(i, share_hash_tree[i])
for i in needed_hashes])
root_hash = share_hash_tree[0]
assert len(root_hash) == 32
self.log("my new root_hash is %s" % base32.b2a(root_hash))
self._new_version_info = (self._new_seqnum, root_hash, self.salt)
prefix = pack_prefix(self._new_seqnum, root_hash, self.salt,
self.required_shares, self.total_shares,
self.segment_size, len(self.newdata))
# now pack the beginning of the share. All shares are the same up
# to the signature, then they have divergent share hash chains,
# then completely different block hash trees + salt + share data,
# then they all share the same encprivkey at the end. The sizes
# of everything are the same for all shares.
sign_started = time.time()
signature = privkey.sign(prefix)
self._status.timings["sign"] = time.time() - sign_started
verification_key = pubkey.serialize()
final_shares = {}
for shnum in range(self.total_shares):
final_share = pack_share(prefix, verification_key, signature,
share_hash_chain[shnum],
block_hash_trees[shnum],
all_shares[shnum], encprivkey)
final_shares[shnum] = final_share
elapsed = time.time() - started
self._status.timings["pack"] = elapsed
self.shares = final_shares
self.root_hash = root_hash
# we also need to build up the version identifier for what we're
# pushing. Extract the offsets from one of our shares.
assert final_shares
offsets = unpack_header(final_shares.values()[0])[-1]
offsets_tuple = tuple([(key, value) for key, value in offsets.items()])
verinfo = (self._new_seqnum, root_hash, self.salt, self.segment_size,
len(self.newdata), self.required_shares, self.total_shares,
prefix, offsets_tuple)
self.versioninfo = verinfo
def _generate_shares(self, shares_and_shareids):
# this sets self.shares and self.root_hash
self.log("_generate_shares")
self._status.set_status("Generating Shares")
started = time.time()
# we should know these by now
privkey = self._privkey
encprivkey = self._encprivkey
pubkey = self._pubkey
(shares, share_ids) = shares_and_shareids
assert len(shares) == len(share_ids)
assert len(shares) == self.total_shares
all_shares = {}
block_hash_trees = {}
share_hash_leaves = [None] * len(shares)
for i in range(len(shares)):
share_data = shares[i]
shnum = share_ids[i]
all_shares[shnum] = share_data
# build the block hash tree. SDMF has only one leaf.
leaves = [hashutil.block_hash(share_data)]
t = hashtree.HashTree(leaves)
block_hash_trees[shnum] = list(t)
share_hash_leaves[shnum] = t[0]
for leaf in share_hash_leaves:
assert leaf is not None
share_hash_tree = hashtree.HashTree(share_hash_leaves)
share_hash_chain = {}
for shnum in range(self.total_shares):
needed_hashes = share_hash_tree.needed_hashes(shnum)
share_hash_chain[shnum] = dict( [ (i, share_hash_tree[i])
for i in needed_hashes ] )
root_hash = share_hash_tree[0]
assert len(root_hash) == 32
self.log("my new root_hash is %s" % base32.b2a(root_hash))
self._new_version_info = (self._new_seqnum, root_hash, self.salt)
prefix = pack_prefix(self._new_seqnum, root_hash, self.salt,
self.required_shares, self.total_shares,
self.segment_size, len(self.newdata))
# now pack the beginning of the share. All shares are the same up
# to the signature, then they have divergent share hash chains,
# then completely different block hash trees + salt + share data,
# then they all share the same encprivkey at the end. The sizes
# of everything are the same for all shares.
sign_started = time.time()
signature = privkey.sign(prefix)
self._status.timings["sign"] = time.time() - sign_started
verification_key = pubkey.serialize()
final_shares = {}
for shnum in range(self.total_shares):
final_share = pack_share(prefix,
verification_key,
signature,
share_hash_chain[shnum],
block_hash_trees[shnum],
all_shares[shnum],
encprivkey)
final_shares[shnum] = final_share
elapsed = time.time() - started
self._status.timings["pack"] = elapsed
self.shares = final_shares
self.root_hash = root_hash
# we also need to build up the version identifier for what we're
# pushing. Extract the offsets from one of our shares.
assert final_shares
offsets = unpack_header(final_shares.values()[0])[-1]
offsets_tuple = tuple( [(key,value) for key,value in offsets.items()] )
verinfo = (self._new_seqnum, root_hash, self.salt,
self.segment_size, len(self.newdata),
self.required_shares, self.total_shares,
prefix, offsets_tuple)
self.versioninfo = verinfo
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 _check_results(rres):
self.failUnless(IRepairResults.providedBy(rres))
self.failUnless(rres.get_successful())
# TODO: examine results
self.copy_shares()
initial_shares = self.old_shares[0]
new_shares = self.old_shares[1]
# TODO: this really shouldn't change anything. When we implement
# a "minimal-bandwidth" repairer", change this test to assert:
# self.failUnlessEqual(new_shares, initial_shares)
# all shares should be in the same place as before
self.failUnlessEqual(set(initial_shares.keys()), set(new_shares.keys()))
# but they should all be at a newer seqnum. The IV will be
# different, so the roothash will be too.
for key in initial_shares:
(version0, seqnum0, root_hash0, IV0, k0, N0, segsize0, datalen0, o0) = unpack_header(
initial_shares[key]
)
(version1, seqnum1, root_hash1, IV1, k1, N1, segsize1, datalen1, o1) = unpack_header(new_shares[key])
self.failUnlessEqual(version0, version1)
self.failUnlessEqual(seqnum0 + 1, seqnum1)
self.failUnlessEqual(k0, k1)
self.failUnlessEqual(N0, N1)
self.failUnlessEqual(segsize0, segsize1)
self.failUnlessEqual(datalen0, datalen1)