Add some tools from osdk repo
These tools are not meant to be used as-is They need a full rework. They are more reference material than anything else right now. I also had to do some awful stuff to them to get them to pass the gate in a hurry, code looks bad because of it. I am cleaning them up as I go. We will remove these in the future once they are no longer useful to reference any longer. Change-Id: I8f13ef282a2a05e72c53a0c307832a46db18d2b4
This commit is contained in:
SamYaple
parent
fdfb83197c
commit
e6d67dca74
|
|
@ -0,0 +1,94 @@
|
|||
#!/usr/bin/python
|
||||
|
||||
# Copyright 2016 Sam Yaple
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
# Copied and licensed from https://github.com/SamYaple/osdk
|
||||
|
||||
|
||||
from hashlib import sha1
|
||||
from osdk import osdk
|
||||
from uuid import uuid4 as uuid
|
||||
|
||||
|
||||
def get_disk_size(device):
|
||||
with open(device, 'rb') as f:
|
||||
return f.seek(0, 2)
|
||||
|
||||
|
||||
def read_segments(f, lst, size, o):
|
||||
zero_hash = sha1(bytes([0] * size)).hexdigest()
|
||||
|
||||
for segment in lst:
|
||||
f.seek(segment * size, 0)
|
||||
data = f.read(size)
|
||||
if not data:
|
||||
raise Exception('Failed to read data')
|
||||
|
||||
sha1_hash = sha1(data)
|
||||
if sha1_hash.hexdigest() != zero_hash:
|
||||
meta = dict()
|
||||
meta['incremental'] = o.metadata['incremental']
|
||||
meta['base'] = len(o.metadata['bases']) - 1
|
||||
meta['encryption'] = 0
|
||||
meta['compression'] = 0
|
||||
meta['sha1_hash'] = sha1_hash.digest()
|
||||
o.segments[segment] = meta
|
||||
else:
|
||||
try:
|
||||
del o.segments[segment]
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
|
||||
def main():
|
||||
device = '/dev/loop0'
|
||||
old_manifest = 'manifest0.osdk'
|
||||
manifest = 'manifest0.osdk'
|
||||
manifest = 'manifest1.osdk'
|
||||
segment_size = 4 * 1024**2 # 4MiB
|
||||
size_of_disk = get_disk_size(device)
|
||||
num_of_sectors = int(size_of_disk / 512)
|
||||
num_of_segments = int(size_of_disk / segment_size)
|
||||
|
||||
o = osdk(manifest)
|
||||
o.metadata['sectors'] = num_of_sectors
|
||||
|
||||
new = True
|
||||
new = False
|
||||
existing = True
|
||||
existing_full = True
|
||||
existing_full = False
|
||||
|
||||
if new:
|
||||
o.metadata['incremental'] = 0
|
||||
o.metadata['segment_size'] = segment_size
|
||||
o.metadata['bases'] = [uuid().bytes]
|
||||
segments_to_read = range(0, num_of_segments - 1)
|
||||
elif existing:
|
||||
o.read_manifest(old_manifest)
|
||||
o.metadata['incremental'] += 1
|
||||
segments_to_read = range(1, num_of_segments - 1)
|
||||
elif existing_full:
|
||||
o.read_manifest(old_manifest)
|
||||
o.metadata['incremental'] += 1
|
||||
segments_to_read = range(0, num_of_segments - 1)
|
||||
|
||||
with open(device, 'rb+') as f:
|
||||
read_segments(f, segments_to_read, segment_size, o)
|
||||
|
||||
o.write_manifest()
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
|
|
@ -0,0 +1,184 @@
|
|||
#!/usr/bin/python
|
||||
|
||||
# Copyright 2016 Sam Yaple
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
# Copied and licensed from https://github.com/SamYaple/osdk
|
||||
|
||||
|
||||
from binascii import b2a_hex
|
||||
from binascii import crc32
|
||||
from datetime import datetime
|
||||
from struct import pack
|
||||
from struct import unpack
|
||||
from uuid import UUID
|
||||
|
||||
|
||||
class osdk(object):
|
||||
|
||||
def __init__(self, manifest):
|
||||
self.manifest = manifest
|
||||
self.segments = dict()
|
||||
self.metadata = dict()
|
||||
self.metadata['signature'] = \
|
||||
UUID('d326503ab5ca49adac56c89eb0b8ef08').bytes
|
||||
self.metadata['version'] = 0
|
||||
|
||||
def write_manifest(self):
|
||||
with open(self.manifest, 'wb') as f:
|
||||
self.write_header(f)
|
||||
self.write_body(f)
|
||||
|
||||
def build_header(self):
|
||||
timestamp = utctimestamp()
|
||||
padding = str.encode('\0\0' * 14)
|
||||
|
||||
data = pack(
|
||||
'<i2IQH14s',
|
||||
timestamp,
|
||||
self.metadata['incremental'],
|
||||
self.metadata['segment_size'],
|
||||
self.metadata['sectors'],
|
||||
len(self.metadata['bases']),
|
||||
padding
|
||||
)
|
||||
|
||||
checksum = crc32(data)
|
||||
|
||||
for i in self.metadata['bases']:
|
||||
data += i
|
||||
checksum = crc32(i, checksum)
|
||||
|
||||
return data, checksum
|
||||
|
||||
def write_body(self, f):
|
||||
checksum = 0
|
||||
|
||||
for segment, meta in self.segments.items():
|
||||
data = pack(
|
||||
'<2IH2B20s',
|
||||
segment,
|
||||
meta['incremental'],
|
||||
meta['base'],
|
||||
meta['encryption'],
|
||||
meta['compression'],
|
||||
meta['sha1_hash']
|
||||
)
|
||||
|
||||
f.write(data)
|
||||
checksum = crc32(data, checksum)
|
||||
|
||||
""" Backfill the body_checksum """
|
||||
f.seek(24, 0)
|
||||
f.write(pack('<I', checksum))
|
||||
|
||||
def write_header(self, f):
|
||||
data, checksum = self.build_header()
|
||||
|
||||
f.write(self.metadata['signature'])
|
||||
|
||||
f.write(pack('<3I', self.metadata['version'], checksum, 0))
|
||||
f.write(data)
|
||||
|
||||
f.write(self.metadata['signature'])
|
||||
|
||||
def read_signature(self, f):
|
||||
if not self.metadata['signature'] == f.read(16):
|
||||
raise Exception('File signiture is not valid')
|
||||
|
||||
def read_header(self, f):
|
||||
self.read_signature(f)
|
||||
|
||||
data = f.read(12)
|
||||
if len(data) != 12:
|
||||
raise Exception('Failed to read amount of requested data')
|
||||
|
||||
version, header_checksum, body_checksum = unpack('<3I', data)
|
||||
if self.metadata['version'] < version:
|
||||
raise Exception(
|
||||
'The manifest version is newer than I know how to read'
|
||||
)
|
||||
|
||||
data = f.read(36)
|
||||
if len(data) != 36:
|
||||
raise Exception('Failed to read amount of requested data')
|
||||
|
||||
checksum = crc32(data)
|
||||
|
||||
num_of_bases = ""
|
||||
padding = ""
|
||||
|
||||
self.metadata['timestamp'],
|
||||
self.metadata['incremental'],
|
||||
self.metadata['segment_size'],
|
||||
self.metadata['sectors'],
|
||||
num_of_bases,
|
||||
padding = unpack('<i2IQH14s', data)
|
||||
|
||||
if padding:
|
||||
continue
|
||||
|
||||
self.metadata['bases'] = []
|
||||
for i in range(0, num_of_bases):
|
||||
data = f.read(16)
|
||||
if len(data) != 16:
|
||||
raise Exception('Failed to read amount of requested data')
|
||||
self.metadata['bases'].append(data)
|
||||
checksum = crc32(data, checksum)
|
||||
|
||||
if checksum != header_checksum:
|
||||
raise Exception('Header checksum does not match')
|
||||
|
||||
self.read_signature(f)
|
||||
|
||||
return body_checksum
|
||||
|
||||
def read_body(self, f, body_checksum):
|
||||
checksum = 0
|
||||
|
||||
data = f.read(32)
|
||||
while len(data) == 32:
|
||||
meta = dict()
|
||||
segment = ""
|
||||
|
||||
segment,
|
||||
meta['incremental'],
|
||||
meta['base'],
|
||||
meta['encryption'],
|
||||
meta['compression'],
|
||||
sha1 = unpack('<2IH2B20s', data)
|
||||
|
||||
meta['sha1_hash'] = b2a_hex(sha1)
|
||||
|
||||
self.segments[segment] = meta
|
||||
checksum = crc32(data, checksum)
|
||||
data = f.read(32)
|
||||
|
||||
if checksum != body_checksum:
|
||||
raise Exception('Body checksum does not match')
|
||||
|
||||
def read_manifest(self, manifest=None):
|
||||
if manifest:
|
||||
with open(manifest, 'rb') as f:
|
||||
body_checksum = self.read_header(f)
|
||||
self.read_body(f, body_checksum)
|
||||
else:
|
||||
with open(self.manifest, 'rb') as f:
|
||||
body_checksum = self.read_header(f)
|
||||
self.read_body(f, body_checksum)
|
||||
|
||||
|
||||
def utctimestamp():
|
||||
ts = datetime.utcnow() - datetime(1970, 1, 1)
|
||||
return ts.seconds + ts.days * 24 * 3600
|
||||
|
|
@ -0,0 +1,68 @@
|
|||
#!/usr/bin/python
|
||||
|
||||
# Copyright 2016 Sam Yaple
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
# Copied and licensed from https://github.com/SamYaple/osdk
|
||||
|
||||
|
||||
from datetime import datetime
|
||||
from osdk import osdk
|
||||
from uuid import UUID
|
||||
|
||||
|
||||
def get_timestamp(o):
|
||||
return datetime.fromtimestamp(
|
||||
o.metadata['timestamp']).strftime('%Y-%m-%d %H:%M:%S')
|
||||
|
||||
|
||||
def convert_size(size_in_bytes):
|
||||
sizes = {4: " TiB", 3: " GiB", 2: " MiB", 1: "KiB", 0: "B"}
|
||||
|
||||
for i in range(len(sizes), 1, -1):
|
||||
size = int(size_in_bytes / 1024**i)
|
||||
if size > 0:
|
||||
break
|
||||
|
||||
return str(size) + sizes[i]
|
||||
|
||||
|
||||
def print_header(o):
|
||||
formated_out = """Version:\t%(version)s
|
||||
Creation Date:\t%(timestamp)s
|
||||
Incremental:\t%(incremental)s
|
||||
Volume Size:\t%(volume_size)s
|
||||
Segment Size:\t%(segment_size)s
|
||||
Backup Set:\t%(backup_set)s"""
|
||||
|
||||
dict_out = dict()
|
||||
dict_out['backup_set'] = UUID(bytes=o.metadata['bases'][-1])
|
||||
dict_out['version'] = o.metadata['version']
|
||||
dict_out['incremental'] = o.metadata['incremental']
|
||||
dict_out['timestamp'] = get_timestamp(o)
|
||||
dict_out['volume_size'] = convert_size(o.metadata['sectors'] * 512)
|
||||
dict_out['segment_size'] = convert_size(o.metadata['segment_size'])
|
||||
|
||||
print(formated_out % dict_out)
|
||||
|
||||
|
||||
def main():
|
||||
manifest = 'manifest1.osdk'
|
||||
o = osdk(manifest)
|
||||
o.read_manifest()
|
||||
|
||||
print_header(o)
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Loading…
Reference in New Issue