| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 |
| */ |
| |
| package org.apache.toree.communication.security |
| |
| import akka.actor.Actor |
| import org.apache.toree.communication.utils.OrderedSupport |
| import org.apache.toree.utils.LogLike |
| |
| /** |
| * Verifies whether or not a kernel message has a valid signature. |
| * @param hmac The HMAC to use for signature validation |
| */ |
| class SignatureCheckerActor( |
| private val hmac: Hmac |
| ) extends Actor with LogLike with OrderedSupport { |
| override def receive: Receive = { |
| case (signature: String, blob: Seq[_]) => withProcessing { |
| val stringBlob: Seq[String] = blob.map(_.toString) |
| val hmacString = hmac(stringBlob: _*) |
| val isValidSignature = hmacString == signature |
| logger.trace(s"Signature ${signature} validity checked against " + |
| s"hmac ${hmacString} with outcome ${isValidSignature}") |
| sender ! isValidSignature |
| } |
| } |
| |
| /** |
| * Defines the types that will be stashed by [[waiting]] |
| * while the Actor is in processing state. |
| * @return |
| */ |
| override def orderedTypes(): Seq[Class[_]] = Seq(classOf[(String, Seq[_])]) |
| } |