239 lines
9.4 KiB
Python
239 lines
9.4 KiB
Python
from __future__ import unicode_literals
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import base64
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import json
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import re
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from boto.exception import JSONResponseError
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from boto.kms.exceptions import AlreadyExistsException, NotFoundException
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from moto.core.responses import BaseResponse
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from .models import kms_backends
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reserved_aliases = [
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'alias/aws/ebs',
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'alias/aws/s3',
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'alias/aws/redshift',
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'alias/aws/rds',
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]
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class KmsResponse(BaseResponse):
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@property
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def parameters(self):
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return json.loads(self.body.decode("utf-8"))
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@property
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def kms_backend(self):
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return kms_backends[self.region]
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def create_key(self):
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policy = self.parameters.get('Policy')
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key_usage = self.parameters.get('KeyUsage')
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description = self.parameters.get('Description')
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key = self.kms_backend.create_key(policy, key_usage, description, self.region)
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return json.dumps(key.to_dict())
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def describe_key(self):
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key_id = self.parameters.get('KeyId')
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try:
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key = self.kms_backend.describe_key(self.kms_backend.get_key_id(key_id))
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except KeyError:
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headers = dict(self.headers)
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headers['status'] = 404
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return "{}", headers
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return json.dumps(key.to_dict())
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def list_keys(self):
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keys = self.kms_backend.list_keys()
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return json.dumps({
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"Keys": [
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{
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"KeyArn": key.arn,
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"KeyId": key.id,
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} for key in keys
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],
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"NextMarker": None,
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"Truncated": False,
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})
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def create_alias(self):
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alias_name = self.parameters['AliasName']
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target_key_id = self.parameters['TargetKeyId']
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region = self.region
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if not alias_name.startswith('alias/'):
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raise JSONResponseError(400, 'Bad Request',
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body={'message': 'Invalid identifier', '__type': 'ValidationException'})
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if alias_name in reserved_aliases:
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raise JSONResponseError(400, 'Bad Request', body={'__type': 'NotAuthorizedException'})
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if ':' in alias_name:
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raise JSONResponseError(400, 'Bad Request', body={
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'message': '{alias_name} contains invalid characters for an alias'.format(**locals()),
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'__type': 'ValidationException'})
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if not re.match(r'^[a-zA-Z0-9:/_-]+$', alias_name):
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raise JSONResponseError(400, 'Bad Request', body={
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'message': "1 validation error detected: Value '{alias_name}' at 'aliasName' failed to satisfy constraint: Member must satisfy regular expression pattern: ^[a-zA-Z0-9:/_-]+$"
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.format(**locals()),
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'__type': 'ValidationException'})
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if self.kms_backend.alias_exists(target_key_id):
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raise JSONResponseError(400, 'Bad Request', body={
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'message': 'Aliases must refer to keys. Not aliases',
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'__type': 'ValidationException'})
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if self.kms_backend.alias_exists(alias_name):
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raise AlreadyExistsException(400, 'Bad Request', body={
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'message': 'An alias with the name arn:aws:kms:{region}:012345678912:{alias_name} already exists'
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.format(**locals()), '__type': 'AlreadyExistsException'})
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self.kms_backend.add_alias(target_key_id, alias_name)
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return json.dumps(None)
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def delete_alias(self):
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alias_name = self.parameters['AliasName']
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region = self.region
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if not alias_name.startswith('alias/'):
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raise JSONResponseError(400, 'Bad Request',
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body={'message': 'Invalid identifier', '__type': 'ValidationException'})
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if not self.kms_backend.alias_exists(alias_name):
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raise NotFoundException(400, 'Bad Request', body={
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'message': 'Alias arn:aws:kms:{region}:012345678912:{alias_name} is not found.'.format(**locals()),
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'__type': 'NotFoundException'})
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self.kms_backend.delete_alias(alias_name)
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return json.dumps(None)
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def list_aliases(self):
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region = self.region
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response_aliases = [
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{
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'AliasArn': u'arn:aws:kms:{region}:012345678912:{reserved_alias}'.format(region=region,
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reserved_alias=reserved_alias),
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'AliasName': reserved_alias
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} for reserved_alias in reserved_aliases
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]
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backend_aliases = self.kms_backend.get_all_aliases()
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for target_key_id, aliases in backend_aliases.items():
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for alias_name in aliases:
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response_aliases.append({
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'AliasArn': u'arn:aws:kms:{region}:012345678912:{alias_name}'.format(region=region,
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alias_name=alias_name),
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'AliasName': alias_name,
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'TargetKeyId': target_key_id,
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})
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return json.dumps({
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'Truncated': False,
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'Aliases': response_aliases,
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})
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def enable_key_rotation(self):
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.enable_key_rotation(key_id)
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except KeyError:
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raise JSONResponseError(404, 'Not Found', body={
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'message': "Key 'arn:aws:kms:{region}:012345678912:key/{key_id}' does not exist".format(region=self.region,key_id=key_id),
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'__type': 'NotFoundException'})
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return json.dumps(None)
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def disable_key_rotation(self):
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.disable_key_rotation(key_id)
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except KeyError:
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raise JSONResponseError(404, 'Not Found', body={
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'message': "Key 'arn:aws:kms:{region}:012345678912:key/{key_id}' does not exist".format(region=self.region,key_id=key_id),
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'__type': 'NotFoundException'})
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return json.dumps(None)
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def get_key_rotation_status(self):
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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rotation_enabled = self.kms_backend.get_key_rotation_status(key_id)
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except KeyError:
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raise JSONResponseError(404, 'Not Found', body={
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'message': "Key 'arn:aws:kms:{region}:012345678912:key/{key_id}' does not exist".format(region=self.region,key_id=key_id),
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'__type': 'NotFoundException'})
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return json.dumps({'KeyRotationEnabled': rotation_enabled})
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def put_key_policy(self):
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key_id = self.parameters.get('KeyId')
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policy_name = self.parameters.get('PolicyName')
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policy = self.parameters.get('Policy')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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_assert_default_policy(policy_name)
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try:
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self.kms_backend.put_key_policy(key_id, policy)
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except KeyError:
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raise JSONResponseError(404, 'Not Found', body={
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'message': "Key 'arn:aws:kms:{region}:012345678912:key/{key_id}' does not exist".format(region=self.region,key_id=key_id),
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'__type': 'NotFoundException'})
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return json.dumps(None)
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def get_key_policy(self):
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key_id = self.parameters.get('KeyId')
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policy_name = self.parameters.get('PolicyName')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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_assert_default_policy(policy_name)
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try:
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return json.dumps({'Policy': self.kms_backend.get_key_policy(key_id)})
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except KeyError:
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raise JSONResponseError(404, 'Not Found', body={
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'message': "Key 'arn:aws:kms:{region}:012345678912:key/{key_id}' does not exist".format(region=self.region,key_id=key_id),
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'__type': 'NotFoundException'})
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def list_key_policies(self):
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key_id = self.parameters.get('KeyId')
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_assert_valid_key_id(self.kms_backend.get_key_id(key_id))
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try:
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self.kms_backend.describe_key(key_id)
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except KeyError:
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raise JSONResponseError(404, 'Not Found', body={
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'message': "Key 'arn:aws:kms:{region}:012345678912:key/{key_id}' does not exist".format(region=self.region,key_id=key_id),
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'__type': 'NotFoundException'})
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return json.dumps({'Truncated': False, 'PolicyNames': ['default']})
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def encrypt(self):
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"""
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We perform no encryption, we just encode the value as base64 and then
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decode it in decrypt().
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"""
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value = self.parameters.get("Plaintext")
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return json.dumps({"CiphertextBlob": base64.b64encode(value).encode("utf-8")})
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def decrypt(self):
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value = self.parameters.get("CiphertextBlob")
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return json.dumps({"Plaintext": base64.b64decode(value).encode("utf-8")})
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def _assert_valid_key_id(key_id):
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if not re.match(r'^[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}$', key_id, re.IGNORECASE):
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raise JSONResponseError(404, 'Not Found', body={'message': ' Invalid keyId', '__type': 'NotFoundException'})
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def _assert_default_policy(policy_name):
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if policy_name != 'default':
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raise JSONResponseError(404, 'Not Found', body={
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'message': "No such policy exists",
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'__type': 'NotFoundException'})
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