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# Licensed to the StackStorm, Inc ('StackStorm') under one or more |
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# contributor license agreements. See the NOTICE file distributed with |
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# this work for additional information regarding copyright ownership. |
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# The ASF licenses this file to You under the Apache License, Version 2.0 |
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# (the "License"); you may not use this file except in compliance with |
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# the License. You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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import datetime |
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import json |
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import os |
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from keyczar.keys import AesKey |
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from oslo_config import cfg |
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import six |
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from st2common.exceptions.keyvalue import CryptoKeyNotSetupException |
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from st2common.log import logging |
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from st2common.util import isotime |
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from st2common.util import date as date_utils |
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from st2common.util.crypto import symmetric_encrypt, symmetric_decrypt |
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from st2common.models.api.base import BaseAPI |
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from st2common.models.db.keyvalue import KeyValuePairDB |
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LOG = logging.getLogger(__name__) |
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class KeyValuePairAPI(BaseAPI): |
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crypto_setup = False |
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model = KeyValuePairDB |
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schema = { |
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'type': 'object', |
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'properties': { |
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'id': { |
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'type': 'string' |
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}, |
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"uid": { |
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"type": "string" |
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}, |
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'name': { |
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'type': 'string' |
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}, |
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'description': { |
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'type': 'string' |
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}, |
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'value': { |
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'type': 'string', |
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'required': True |
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}, |
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'secret': { |
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'type': 'boolean', |
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'required': False, |
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'default': False |
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}, |
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'expire_timestamp': { |
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'type': 'string', |
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'pattern': isotime.ISO8601_UTC_REGEX |
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}, |
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# Note: Those values are only used for input |
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# TODO: Improve |
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'ttl': { |
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'type': 'integer' |
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} |
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}, |
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'additionalProperties': False |
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} |
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@staticmethod |
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def _setup_crypto(): |
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LOG.info('Checking if encryption is enabled for key-value store.') |
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KeyValuePairAPI.is_encryption_enabled = cfg.CONF.keyvalue.enable_encryption |
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LOG.debug('Encryption enabled? : %s', KeyValuePairAPI.is_encryption_enabled) |
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if KeyValuePairAPI.is_encryption_enabled: |
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KeyValuePairAPI.crypto_key_path = cfg.CONF.keyvalue.encryption_key_path |
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LOG.info('Encryption enabled. Looking for key in path %s', |
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KeyValuePairAPI.crypto_key_path) |
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if not os.path.exists(KeyValuePairAPI.crypto_key_path): |
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msg = ('Encryption key file does not exist in path %s.' % |
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KeyValuePairAPI.crypto_key_path) |
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LOG.exception(msg) |
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LOG.info('All API requests will now send out BAD_REQUEST ' + |
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'if you ask to store secrets in key value store.') |
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KeyValuePairAPI.crypto_key = None |
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else: |
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KeyValuePairAPI.crypto_key = KeyValuePairAPI._read_crypto_key( |
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KeyValuePairAPI.crypto_key_path |
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) |
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KeyValuePairAPI.crypto_setup = True |
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@staticmethod |
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def _read_crypto_key(key_path): |
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with open(key_path) as f: |
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key = AesKey.Read(f.read()) |
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return key |
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@classmethod |
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def from_model(cls, model, mask_secrets=True): |
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if not KeyValuePairAPI.crypto_setup: |
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KeyValuePairAPI._setup_crypto() |
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doc = cls._from_model(model, mask_secrets=mask_secrets) |
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if 'id' in doc: |
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del doc['id'] |
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if not mask_secrets and model.encrypted: |
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doc['value'] = symmetric_decrypt(KeyValuePairAPI.crypto_key, model.value) |
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if model.expire_timestamp: |
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doc['expire_timestamp'] = isotime.format(model.expire_timestamp, offset=False) |
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attrs = {attr: value for attr, value in six.iteritems(doc) if value is not None} |
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return cls(**attrs) |
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@classmethod |
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def to_model(cls, kvp): |
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if not KeyValuePairAPI.crypto_setup: |
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KeyValuePairAPI._setup_crypto() |
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name = getattr(kvp, 'name', None) |
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description = getattr(kvp, 'description', None) |
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value = kvp.value |
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encrypted = False |
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if getattr(kvp, 'ttl', None): |
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expire_timestamp = (date_utils.get_datetime_utc_now() + |
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datetime.timedelta(seconds=kvp.ttl)) |
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else: |
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expire_timestamp = None |
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if getattr(kvp, 'secret', False): |
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if not KeyValuePairAPI.crypto_key: |
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msg = ('Crypto key not found in %s. Unable to encrypt value for key %s.' % |
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(KeyValuePairAPI.crypto_key_path, name)) |
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raise CryptoKeyNotSetupException(msg) |
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value = symmetric_encrypt(KeyValuePairAPI.crypto_key, value) |
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encrypted = True |
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model = cls.model(name=name, description=description, value=value, |
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encrypted=encrypted, |
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expire_timestamp=expire_timestamp) |
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return model |
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StackStorm /
st2
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