def check_checksums():
for f in status["files"].values():
f['checksum'] = None
# checksums field might contain three states:
# a) None - This is a legacy snapshot, no checksum file available
# b) False - No or invalid checksums
# c) True - Checksums successfully validated
if status['type'] == 'legacy':
status['checksums'] = None
return
if 'checksums' not in status['files'].keys():
status['checksums'] = False
return
# Extract all available checksums from the snapshot
checksums_raw = access_snapshot(
lambda x: multitar.get_file_content(x, 'checksums'))
checksums = {}
for l in checksums_raw.split('\n'):
line = l.strip()
if ' ' in line:
parts = line.split(' ')
if len(parts) == 3:
checksums[parts[0]] = (parts[1], parts[2])
# now loop all known backup domains and check wheter or not they request
# checksum validation, there is one available and it is valid
status['checksums'] = True
for domain_id, domain in backup_domains.items():
filename = domain_id + '.tar.gz'
if not domain.get('checksum',
True) or filename not in status['files']:
continue
if filename not in checksums:
continue
checksum, signed = checksums[filename]
# Get hashes of file in question
def handler(x, filename=filename):
return multitar.get_file_content(x, filename)
subtar = access_snapshot(handler)
subtar_hash = sha256(subtar).hexdigest()
subtar_signed = sha256(
six.ensure_binary(subtar_hash) +
_snapshot_secret()).hexdigest()
status['files'][filename]['checksum'] = (checksum == subtar_hash
and signed
== subtar_signed)
status['checksums'] &= status['files'][filename]['checksum']
def check_core():
if "check_mk.tar.gz" not in status["files"]:
return
cmk_tar = io.BytesIO(
access_snapshot(lambda x: multitar.get_file_content(x, 'check_mk.tar.gz')))
files = multitar.list_tar_content(cmk_tar)
using_cmc = os.path.exists(cmk.utils.paths.omd_root + '/etc/check_mk/conf.d/microcore.mk')
snapshot_cmc = 'conf.d/microcore.mk' in files
if using_cmc and not snapshot_cmc:
raise MKGeneralException(
_('You are currently using the Check_MK Micro Core, but this snapshot does not use the '
'Check_MK Micro Core. If you need to migrate your data, you could consider changing '
'the core, restoring the snapshot and changing the core back again.'))
elif not using_cmc and snapshot_cmc:
raise MKGeneralException(
_('You are currently not using the Check_MK Micro Core, but this snapshot uses the '
'Check_MK Micro Core. If you need to migrate your data, you could consider changing '
'the core, restoring the snapshot and changing the core back again.'))
def handler(x, filename=filename):
return multitar.get_file_content(x, filename)
def handler(x, entry=entry):
return multitar.get_file_content(x, entry)
