/usr/lib/python2.7/dist-packages/swift/common/container_sync_realms.py is in python-swift 2.7.0-0ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 | # Copyright (c) 2013 OpenStack Foundation
#
# 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.
import errno
import hashlib
import hmac
import os
import time
from six.moves import configparser
from swift import gettext_ as _
from swift.common.utils import get_valid_utf8_str
class ContainerSyncRealms(object):
"""
Loads and parses the container-sync-realms.conf, occasionally
checking the file's mtime to see if it needs to be reloaded.
"""
def __init__(self, conf_path, logger):
self.conf_path = conf_path
self.logger = logger
self.next_mtime_check = 0
self.mtime_check_interval = 300
self.conf_path_mtime = 0
self.data = {}
self.reload()
def reload(self):
"""Forces a reload of the conf file."""
self.next_mtime_check = 0
self.conf_path_mtime = 0
self._reload()
def _reload(self):
now = time.time()
if now >= self.next_mtime_check:
self.next_mtime_check = now + self.mtime_check_interval
try:
mtime = os.path.getmtime(self.conf_path)
except OSError as err:
if err.errno == errno.ENOENT:
log_func = self.logger.debug
else:
log_func = self.logger.error
log_func(_('Could not load %r: %s'), self.conf_path, err)
else:
if mtime != self.conf_path_mtime:
self.conf_path_mtime = mtime
try:
conf = configparser.SafeConfigParser()
conf.read(self.conf_path)
except configparser.ParsingError as err:
self.logger.error(
_('Could not load %r: %s'), self.conf_path, err)
else:
try:
self.mtime_check_interval = conf.getint(
'DEFAULT', 'mtime_check_interval')
self.next_mtime_check = \
now + self.mtime_check_interval
except configparser.NoOptionError:
self.mtime_check_interval = 300
self.next_mtime_check = \
now + self.mtime_check_interval
except (configparser.ParsingError, ValueError) as err:
self.logger.error(
_('Error in %r with mtime_check_interval: %s'),
self.conf_path, err)
realms = {}
for section in conf.sections():
realm = {}
clusters = {}
for option, value in conf.items(section):
if option in ('key', 'key2'):
realm[option] = value
elif option.startswith('cluster_'):
clusters[option[8:].upper()] = value
realm['clusters'] = clusters
realms[section.upper()] = realm
self.data = realms
def realms(self):
"""Returns a list of realms."""
self._reload()
return self.data.keys()
def key(self, realm):
"""Returns the key for the realm."""
self._reload()
result = self.data.get(realm.upper())
if result:
result = result.get('key')
return result
def key2(self, realm):
"""Returns the key2 for the realm."""
self._reload()
result = self.data.get(realm.upper())
if result:
result = result.get('key2')
return result
def clusters(self, realm):
"""Returns a list of clusters for the realm."""
self._reload()
result = self.data.get(realm.upper())
if result:
result = result.get('clusters')
if result:
result = result.keys()
return result or []
def endpoint(self, realm, cluster):
"""Returns the endpoint for the cluster in the realm."""
self._reload()
result = None
realm_data = self.data.get(realm.upper())
if realm_data:
cluster_data = realm_data.get('clusters')
if cluster_data:
result = cluster_data.get(cluster.upper())
return result
def get_sig(self, request_method, path, x_timestamp, nonce, realm_key,
user_key):
"""
Returns the hexdigest string of the HMAC-SHA1 (RFC 2104) for
the information given.
:param request_method: HTTP method of the request.
:param path: The path to the resource.
:param x_timestamp: The X-Timestamp header value for the request.
:param nonce: A unique value for the request.
:param realm_key: Shared secret at the cluster operator level.
:param user_key: Shared secret at the user's container level.
:returns: hexdigest str of the HMAC-SHA1 for the request.
"""
nonce = get_valid_utf8_str(nonce)
realm_key = get_valid_utf8_str(realm_key)
user_key = get_valid_utf8_str(user_key)
return hmac.new(
realm_key,
'%s\n%s\n%s\n%s\n%s' % (
request_method, path, x_timestamp, nonce, user_key),
hashlib.sha1).hexdigest()
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