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)
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")
printoffset("seqnum", o_seqnum, 2)
o_root_hash = m.DATA_OFFSET + struct.calcsize(">BQ")
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")
printoffset("seqnum", o_seqnum, 2)
o_root_hash = m.DATA_OFFSET + struct.calcsize(">BQ")
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)
