mirror of https://github.com/hyperledger/besu
Danno Ferrin
6 months ago
commit
b185371a7c
@ -0,0 +1,19 @@ |
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name: DCO |
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|
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on: [pull_request] |
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|
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jobs: |
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dco_check: |
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runs-on: ubuntu-latest |
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name: DCO |
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if: ${{ github.actor != 'dependabot[bot]' }} |
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steps: |
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- name: Get PR Commits |
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id: 'get-pr-commits' |
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uses: tim-actions/get-pr-commits@198af03565609bb4ed924d1260247b4881f09e7d |
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with: |
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token: ${{ secrets.GITHUB_TOKEN }} |
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- name: DCO Check |
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uses: tim-actions/dco@f2279e6e62d5a7d9115b0cb8e837b777b1b02e21 |
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with: |
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commits: ${{ steps.get-pr-commits.outputs.commits }} |
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@ -0,0 +1,19 @@ |
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Hyperledger Besu |
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Copyright contributors to Hyperledger Besu. |
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|
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This product includes software adapted from Tuweni. (https://tuweni.tmio.io/) |
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Copyright 2023-2024 The Machine Consultancy LLC |
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Licensed under Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0) |
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|
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The following NOTICE file content is provided by Tuweni: |
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------------------------------------------------------------ |
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This product includes code developed under the Apache Tuweni incubation project. |
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|
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Copyright 2019-2023 The Apache Software Foundation |
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|
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This product includes software developed at |
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The Apache Software Foundation (http://www.apache.org/). |
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|
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In addition, this product includes software developed by |
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Copyright 2018-2019 ConsenSys, Inc. |
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------------------------------------------------------------ |
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@ -1,8 +1,10 @@ |
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sync-mode="FAST" |
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sync-mode="FULL" |
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data-storage-format="FOREST" |
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sync-min-peers=1 |
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remote-connections-limit-enabled=false |
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tx-pool="SEQUENCED" |
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tx-pool-no-local-priority=true |
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tx-pool-limit-by-account-percentage=0.15 |
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rpc-http-max-active-connections=300 |
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min-gas-price=0 |
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min-gas-price=0 |
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bonsai-limit-trie-logs-enabled=false |
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@ -1,4 +1,3 @@ |
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sync-mode="CHECKPOINT" |
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data-storage-format="BONSAI" |
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bonsai-historical-block-limit=128 |
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max-peers=25 |
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@ -0,0 +1,107 @@ |
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/* |
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* Copyright contributors to Hyperledger Besu. |
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* |
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* Licensed under the Apache License, Version 2.0 (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 distributed under the License is distributed on |
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations under the License. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
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|
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import java.util.List; |
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import java.util.Optional; |
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|
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import io.vertx.core.AbstractVerticle; |
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import org.apache.tuweni.devp2p.EthereumNodeRecord; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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|
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// Adapted from https://github.com/tmio/tuweni and licensed under Apache 2.0
|
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/** |
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* Resolves DNS records over time, refreshing records. This is written as a Vertx Verticle which |
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* allows to run outside the Vertx event loop |
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*/ |
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public class DNSDaemon extends AbstractVerticle { |
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private static final Logger LOG = LoggerFactory.getLogger(DNSDaemon.class); |
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private final String enrLink; |
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private final long seq; |
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private final long initialDelay; |
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private final long delay; |
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private final Optional<DNSDaemonListener> listener; |
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private final Optional<String> dnsServer; |
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private Optional<Long> periodicTaskId = Optional.empty(); |
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private DNSResolver dnsResolver; |
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|
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/** |
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* Creates a new DNSDaemon. |
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* |
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* @param enrLink the ENR link to start with, of the form enrtree://PUBKEY@domain
|
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* @param listener Listener notified when records are read and whenever they are updated. |
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* @param seq the sequence number of the root record. If the root record seq is higher, proceed |
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* with visit. |
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* @param initialDelay the delay in milliseconds before the first poll of DNS records. |
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* @param delay the delay in milliseconds at which to poll DNS records. If negative or zero, it |
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* runs only once. |
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* @param dnsServer the DNS server to use for DNS query. If null, the default DNS server will be |
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* used. |
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*/ |
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public DNSDaemon( |
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final String enrLink, |
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final DNSDaemonListener listener, |
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final long seq, |
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final long initialDelay, |
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final long delay, |
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final String dnsServer) { |
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this.enrLink = enrLink; |
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this.listener = Optional.ofNullable(listener); |
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this.seq = seq; |
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this.initialDelay = initialDelay; |
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this.delay = delay; |
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this.dnsServer = Optional.ofNullable(dnsServer); |
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} |
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|
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/** Starts the DNSDaemon. */ |
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@Override |
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public void start() { |
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if (vertx == null) { |
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throw new IllegalStateException("DNSDaemon must be deployed as a vertx verticle."); |
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} |
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|
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LOG.info("Starting DNSDaemon for {}, using {} DNS host.", enrLink, dnsServer.orElse("default")); |
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dnsResolver = new DNSResolver(vertx, enrLink, seq, dnsServer); |
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if (delay > 0) { |
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periodicTaskId = Optional.of(vertx.setPeriodic(initialDelay, delay, this::refreshENRRecords)); |
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} else { |
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// do one-shot resolution
|
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refreshENRRecords(0L); |
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} |
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} |
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|
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/** Stops the DNSDaemon. */ |
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@Override |
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public void stop() { |
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LOG.info("Stopping DNSDaemon for {}", enrLink); |
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periodicTaskId.ifPresent(vertx::cancelTimer); |
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dnsResolver.close(); |
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} |
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|
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/** |
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* Refresh enr records by calling dnsResolver and updating the listeners. |
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* |
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* @param taskId the task id of the periodic task |
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*/ |
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void refreshENRRecords(final Long taskId) { |
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LOG.debug("Refreshing DNS records"); |
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final long startTime = System.nanoTime(); |
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final List<EthereumNodeRecord> ethereumNodeRecords = dnsResolver.collectAll(); |
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final long endTime = System.nanoTime(); |
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LOG.debug("Time taken to DNSResolver.collectAll: {} ms", (endTime - startTime) / 1_000_000); |
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listener.ifPresent(it -> it.newRecords(dnsResolver.sequence(), ethereumNodeRecords)); |
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} |
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} |
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@ -0,0 +1,32 @@ |
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/* |
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* Copyright contributors to Hyperledger Besu. |
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* |
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* Licensed under the Apache License, Version 2.0 (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 distributed under the License is distributed on |
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations under the License. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
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|
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import java.util.List; |
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|
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import org.apache.tuweni.devp2p.EthereumNodeRecord; |
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|
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// Adapted from https://github.com/tmio/tuweni and licensed under Apache 2.0
|
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/** Callback listening to updates of the DNS records. */ |
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@FunctionalInterface |
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public interface DNSDaemonListener { |
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/** |
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* Callback called when the seq is updated on the DNS server |
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* |
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* @param seq the update identifier of the records |
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* @param records the records stored on the server |
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*/ |
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void newRecords(long seq, List<EthereumNodeRecord> records); |
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} |
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@ -0,0 +1,279 @@ |
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/* |
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* Copyright contributors to Hyperledger Besu. |
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* |
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* Licensed under the Apache License, Version 2.0 (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 distributed under the License is distributed on |
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations under the License. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
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|
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import static org.hyperledger.besu.ethereum.p2p.discovery.dns.KVReader.readKV; |
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|
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import java.net.URI; |
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import java.util.Arrays; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Optional; |
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import java.util.stream.Collectors; |
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|
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import org.apache.tuweni.bytes.Bytes; |
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import org.apache.tuweni.crypto.SECP256K1; |
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import org.apache.tuweni.devp2p.EthereumNodeRecord; |
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import org.apache.tuweni.io.Base32; |
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import org.apache.tuweni.io.Base64URLSafe; |
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import org.bouncycastle.math.ec.ECPoint; |
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|
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// Adapted from https://github.com/tmio/tuweni and licensed under Apache 2.0
|
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/** Intermediate format to write DNS entries */ |
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public interface DNSEntry { |
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|
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/** |
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* Read a DNS entry from a String. |
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* |
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* @param serialized the serialized form of a DNS entry |
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* @return DNS entry if found |
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* @throws IllegalArgumentException if the record cannot be read |
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*/ |
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static DNSEntry readDNSEntry(final String serialized) { |
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final String record = trimQuotes(serialized); |
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final String prefix = getPrefix(record); |
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return switch (prefix) { |
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case "enrtree-root" -> new ENRTreeRoot(readKV(record)); |
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case "enrtree-branch" -> new ENRTree(record.substring(prefix.length() + 1)); |
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case "enr" -> new ENRNode(readKV(record)); |
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case "enrtree" -> new ENRTreeLink(record); |
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default -> |
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throw new IllegalArgumentException( |
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serialized + " should contain enrtree-branch, enr, enrtree-root or enrtree"); |
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}; |
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} |
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|
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private static String trimQuotes(final String str) { |
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if (str.startsWith("\"") && str.endsWith("\"")) { |
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return str.substring(1, str.length() - 1); |
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} |
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return str; |
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} |
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|
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private static String getPrefix(final String input) { |
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final String[] parts = input.split(":", 2); |
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return parts.length > 0 ? parts[0] : ""; |
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} |
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|
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/** Represents a node in the ENR record. */ |
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class ENRNode implements DNSEntry { |
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|
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private final EthereumNodeRecord nodeRecord; |
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|
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/** |
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* Constructs ENRNode with the given attributes. |
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* |
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* @param attrs the attributes of the node |
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*/ |
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public ENRNode(final Map<String, String> attrs) { |
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if (attrs == null) { |
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throw new IllegalArgumentException("ENRNode attributes cannot be null"); |
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} |
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nodeRecord = |
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Optional.ofNullable(attrs.get("enr")) |
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.map(Base64URLSafe::decode) |
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.map(EthereumNodeRecord::fromRLP) |
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.orElseThrow(() -> new IllegalArgumentException("Invalid ENR record")); |
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} |
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|
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/** |
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* Ethereum node record. |
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* |
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* @return the instance of EthereumNodeRecord |
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*/ |
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public EthereumNodeRecord nodeRecord() { |
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return nodeRecord; |
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} |
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|
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@Override |
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public String toString() { |
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return nodeRecord.toString(); |
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} |
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} |
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|
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/** Root of the ENR tree */ |
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class ENRTreeRoot implements DNSEntry { |
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private final String version; |
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private final Long seq; |
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private final SECP256K1.Signature sig; |
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private final String enrRoot; |
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private final String linkRoot; |
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|
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/** |
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* Creates a new ENRTreeRoot |
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* |
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* @param attrs The attributes of the root |
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*/ |
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public ENRTreeRoot(final Map<String, String> attrs) { |
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if (attrs == null) { |
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throw new IllegalArgumentException("ENRNode attributes cannot be null"); |
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} |
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|
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version = |
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Optional.ofNullable(attrs.get("enrtree-root")) |
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.orElseThrow(() -> new IllegalArgumentException("Missing attribute enrtree-root")); |
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seq = |
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Optional.ofNullable(attrs.get("seq")) |
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.map(Long::parseLong) |
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.orElseThrow(() -> new IllegalArgumentException("Missing attribute seq")); |
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sig = |
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Optional.ofNullable(attrs.get("sig")) |
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.map(Base64URLSafe::decode) |
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.map( |
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sigBytes -> |
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SECP256K1.Signature.fromBytes( |
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Bytes.concatenate( |
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sigBytes, Bytes.wrap(new byte[Math.max(0, 65 - sigBytes.size())])))) |
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.orElseThrow(() -> new IllegalArgumentException("Missing attribute sig")); |
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enrRoot = |
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Optional.ofNullable(attrs.get("e")) |
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.orElseThrow(() -> new IllegalArgumentException("Missing attribute e")); |
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linkRoot = |
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Optional.ofNullable(attrs.get("l")) |
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.orElseThrow(() -> new IllegalArgumentException("Missing attribute l")); |
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} |
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|
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/** |
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* Gets sequence |
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* |
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* @return sequence |
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*/ |
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public Long seq() { |
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return seq; |
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} |
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|
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/** |
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* Link root. |
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* |
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* @return the link root. |
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*/ |
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public String linkRoot() { |
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return linkRoot; |
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} |
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|
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/** |
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* ENR root. |
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* |
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* @return the enr root. |
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*/ |
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public String enrRoot() { |
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return enrRoot; |
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} |
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|
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/** |
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* Signature. |
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* |
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* @return SECP256K1 signature |
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*/ |
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public SECP256K1.Signature sig() { |
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return sig; |
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} |
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|
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@Override |
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public String toString() { |
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return String.format( |
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"enrtree-root:%s e=%s l=%s seq=%d sig=%s", |
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version, enrRoot, linkRoot, seq, Base64URLSafe.encode(sig.bytes())); |
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} |
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|
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/** |
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* Returns the signed content of the root |
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* |
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* @return the signed content |
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*/ |
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public String signedContent() { |
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return String.format("enrtree-root:%s e=%s l=%s seq=%d", version, enrRoot, linkRoot, seq); |
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} |
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} |
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|
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/** Represents a branch in the ENR record. */ |
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class ENRTree implements DNSEntry { |
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private final List<String> entries; |
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|
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/** |
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* Constructs ENRTree with the given entries. |
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* |
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* @param entriesAsString the entries of the branch |
||||
*/ |
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public ENRTree(final String entriesAsString) { |
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entries = |
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Arrays.stream(entriesAsString.split("[,\"]")) |
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.filter(it -> it.length() > 4) |
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.collect(Collectors.toList()); |
||||
} |
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|
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/** |
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* Entries of the branch. |
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* |
||||
* @return the entries of the branch |
||||
*/ |
||||
public List<String> entries() { |
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return entries; |
||||
} |
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|
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@Override |
||||
public String toString() { |
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return "enrtree-branch:" + String.join(",", entries); |
||||
} |
||||
} |
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|
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/** Class representing an ENR Tree link */ |
||||
class ENRTreeLink implements DNSEntry { |
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private final String domainName; |
||||
private final String encodedPubKey; |
||||
private final SECP256K1.PublicKey pubKey; |
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|
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/** |
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* Creates a new ENRTreeLink |
||||
* |
||||
* @param enrTreeLink The URI representing ENR Tree link |
||||
*/ |
||||
public ENRTreeLink(final String enrTreeLink) { |
||||
final URI uri = URI.create(enrTreeLink); |
||||
this.domainName = uri.getHost(); |
||||
this.encodedPubKey = uri.getUserInfo(); |
||||
this.pubKey = fromBase32(encodedPubKey); |
||||
} |
||||
|
||||
private static SECP256K1.PublicKey fromBase32(final String base32) { |
||||
final byte[] keyBytes = Base32.decodeBytes(base32); |
||||
final ECPoint ecPoint = SECP256K1.Parameters.CURVE.getCurve().decodePoint(keyBytes); |
||||
return SECP256K1.PublicKey.fromBytes(Bytes.wrap(ecPoint.getEncoded(false)).slice(1)); |
||||
} |
||||
|
||||
/** |
||||
* Decoded SECP256K1 public key. |
||||
* |
||||
* @return derived SECP256K1.PublicKey |
||||
*/ |
||||
public SECP256K1.PublicKey publicKey() { |
||||
return pubKey; |
||||
} |
||||
|
||||
/** |
||||
* Domain name. |
||||
* |
||||
* @return the domain name |
||||
*/ |
||||
public String domainName() { |
||||
return domainName; |
||||
} |
||||
|
||||
@Override |
||||
public String toString() { |
||||
return String.format("enrtree://%s@%s", encodedPubKey, domainName); |
||||
} |
||||
} |
||||
} |
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@ -0,0 +1,237 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import org.hyperledger.besu.crypto.Hash; |
||||
import org.hyperledger.besu.ethereum.p2p.discovery.dns.DNSEntry.ENRNode; |
||||
import org.hyperledger.besu.ethereum.p2p.discovery.dns.DNSEntry.ENRTreeLink; |
||||
import org.hyperledger.besu.ethereum.p2p.discovery.dns.DNSEntry.ENRTreeRoot; |
||||
|
||||
import java.nio.charset.StandardCharsets; |
||||
import java.util.ArrayList; |
||||
import java.util.Collections; |
||||
import java.util.List; |
||||
import java.util.Optional; |
||||
import java.util.concurrent.CountDownLatch; |
||||
import java.util.concurrent.ExecutorService; |
||||
import java.util.concurrent.Executors; |
||||
import java.util.concurrent.atomic.AtomicReference; |
||||
|
||||
import com.google.common.base.Splitter; |
||||
import io.vertx.core.Vertx; |
||||
import io.vertx.core.dns.DnsClient; |
||||
import io.vertx.core.dns.DnsClientOptions; |
||||
import org.apache.tuweni.bytes.Bytes; |
||||
import org.apache.tuweni.bytes.Bytes32; |
||||
import org.apache.tuweni.crypto.SECP256K1; |
||||
import org.apache.tuweni.devp2p.EthereumNodeRecord; |
||||
import org.slf4j.Logger; |
||||
import org.slf4j.LoggerFactory; |
||||
|
||||
// Adapted from https://github.com/tmio/tuweni and licensed under Apache 2.0
|
||||
/** Resolves a set of ENR nodes from a host name. */ |
||||
public class DNSResolver implements AutoCloseable { |
||||
private static final Logger LOG = LoggerFactory.getLogger(DNSResolver.class); |
||||
private final ExecutorService rawTxtRecordsExecutor = Executors.newSingleThreadExecutor(); |
||||
private final String enrLink; |
||||
private long seq; |
||||
private final DnsClient dnsClient; |
||||
|
||||
/** |
||||
* Creates a new DNSResolver. |
||||
* |
||||
* @param vertx Vertx instance which is used to create DNS Client |
||||
* @param enrLink the ENR link to start with, of the form enrtree://PUBKEY@domain
|
||||
* @param seq the sequence number of the root record. If the root record seq is higher, proceed |
||||
* with visit. |
||||
* @param dnsServer the DNS server to use for DNS query. If empty, the default DNS server will be |
||||
* used. |
||||
*/ |
||||
public DNSResolver( |
||||
final Vertx vertx, final String enrLink, final long seq, final Optional<String> dnsServer) { |
||||
this.enrLink = enrLink; |
||||
this.seq = seq; |
||||
final DnsClientOptions dnsClientOptions = |
||||
dnsServer.map(DNSResolver::buildDnsClientOptions).orElseGet(DnsClientOptions::new); |
||||
dnsClient = vertx.createDnsClient(dnsClientOptions); |
||||
} |
||||
|
||||
private static DnsClientOptions buildDnsClientOptions(final String server) { |
||||
final List<String> hostPort = Splitter.on(":").splitToList(server); |
||||
final DnsClientOptions dnsClientOptions = new DnsClientOptions(); |
||||
dnsClientOptions.setHost(hostPort.get(0)); |
||||
if (hostPort.size() > 1) { |
||||
try { |
||||
int port = Integer.parseInt(hostPort.get(1)); |
||||
dnsClientOptions.setPort(port); |
||||
} catch (NumberFormatException e) { |
||||
LOG.trace("Invalid port number {}, ignoring", hostPort.get(1)); |
||||
} |
||||
} |
||||
return dnsClientOptions; |
||||
} |
||||
|
||||
/** |
||||
* Convenience method to read all ENRs, from a top-level record. |
||||
* |
||||
* @return all ENRs collected |
||||
*/ |
||||
public List<EthereumNodeRecord> collectAll() { |
||||
final List<EthereumNodeRecord> nodes = new ArrayList<>(); |
||||
final DNSVisitor visitor = nodes::add; |
||||
visitTree(new ENRTreeLink(enrLink), visitor); |
||||
if (!nodes.isEmpty()) { |
||||
LOG.debug("Resolved {} nodes from DNS for enr link {}", nodes.size(), enrLink); |
||||
} else { |
||||
LOG.debug("No nodes resolved from DNS"); |
||||
} |
||||
return Collections.unmodifiableList(nodes); |
||||
} |
||||
|
||||
/** |
||||
* Sequence number of the root record. |
||||
* |
||||
* @return the current sequence number of the root record |
||||
*/ |
||||
public long sequence() { |
||||
return seq; |
||||
} |
||||
|
||||
/** |
||||
* Reads a complete tree of record, starting with the top-level record. |
||||
* |
||||
* @param link the ENR link to start with |
||||
* @param visitor the visitor that will look at each record |
||||
*/ |
||||
private void visitTree(final ENRTreeLink link, final DNSVisitor visitor) { |
||||
Optional<DNSEntry> optionalEntry = resolveRecord(link.domainName()); |
||||
if (optionalEntry.isEmpty()) { |
||||
LOG.debug("No DNS record found for {}", link.domainName()); |
||||
return; |
||||
} |
||||
|
||||
final DNSEntry dnsEntry = optionalEntry.get(); |
||||
if (!(dnsEntry instanceof ENRTreeRoot treeRoot)) { |
||||
LOG.debug("Root entry {} is not an ENR tree root", dnsEntry); |
||||
return; |
||||
} |
||||
|
||||
if (!checkSignature(treeRoot, link.publicKey(), treeRoot.sig())) { |
||||
LOG.debug("ENR tree root {} failed signature check", link.domainName()); |
||||
return; |
||||
} |
||||
if (treeRoot.seq() <= seq) { |
||||
LOG.debug("ENR tree root seq {} is not higher than {}, aborting", treeRoot.seq(), seq); |
||||
return; |
||||
} |
||||
seq = treeRoot.seq(); |
||||
|
||||
internalVisit(treeRoot.enrRoot(), link.domainName(), visitor); |
||||
internalVisit(treeRoot.linkRoot(), link.domainName(), visitor); |
||||
} |
||||
|
||||
private boolean internalVisit( |
||||
final String entryName, final String domainName, final DNSVisitor visitor) { |
||||
final Optional<DNSEntry> optionalDNSEntry = resolveRecord(entryName + "." + domainName); |
||||
if (optionalDNSEntry.isEmpty()) { |
||||
LOG.debug("No DNS record found for {}", entryName + "." + domainName); |
||||
return true; |
||||
} |
||||
|
||||
final DNSEntry entry = optionalDNSEntry.get(); |
||||
if (entry instanceof ENRNode node) { |
||||
// TODO: this always return true because the visitor is reference to list.add
|
||||
return visitor.visit(node.nodeRecord()); |
||||
} else if (entry instanceof DNSEntry.ENRTree tree) { |
||||
for (String e : tree.entries()) { |
||||
// TODO: When would this ever return false?
|
||||
boolean keepGoing = internalVisit(e, domainName, visitor); |
||||
if (!keepGoing) { |
||||
return false; |
||||
} |
||||
} |
||||
} else if (entry instanceof ENRTreeLink link) { |
||||
visitTree(link, visitor); |
||||
} else { |
||||
LOG.debug("Unsupported type of node {}", entry); |
||||
} |
||||
return true; |
||||
} |
||||
|
||||
/** |
||||
* Resolves one DNS record associated with the given domain name. |
||||
* |
||||
* @param domainName the domain name to query |
||||
* @return the DNS entry read from the domain. Empty if no record is found. |
||||
*/ |
||||
Optional<DNSEntry> resolveRecord(final String domainName) { |
||||
return resolveRawRecord(domainName).map(DNSEntry::readDNSEntry); |
||||
} |
||||
|
||||
/** |
||||
* Resolves the first TXT record for a domain name and returns it. |
||||
* |
||||
* @param domainName the name of the DNS domain to query |
||||
* @return the first TXT entry of the DNS record. Empty if no record is found. |
||||
*/ |
||||
Optional<String> resolveRawRecord(final String domainName) { |
||||
// vertx-dns is async, kotlin coroutines allows us to await, similarly Java 21 new thread
|
||||
// model would also allow us to await. For now, we will use CountDownLatch to block the
|
||||
// current thread until the DNS resolution is complete.
|
||||
LOG.debug("Resolving TXT records on domain: {}", domainName); |
||||
final CountDownLatch latch = new CountDownLatch(1); |
||||
final AtomicReference<Optional<String>> record = new AtomicReference<>(Optional.empty()); |
||||
rawTxtRecordsExecutor.submit( |
||||
() -> { |
||||
dnsClient |
||||
.resolveTXT(domainName) |
||||
.onComplete( |
||||
ar -> { |
||||
if (ar.succeeded()) { |
||||
LOG.trace( |
||||
"TXT record resolved on domain {}. Result: {}", domainName, ar.result()); |
||||
record.set(ar.result().stream().findFirst()); |
||||
} else { |
||||
LOG.trace( |
||||
"TXT record not resolved on domain {}, because: {}", |
||||
domainName, |
||||
ar.cause().getMessage()); |
||||
} |
||||
latch.countDown(); |
||||
}); |
||||
}); |
||||
|
||||
try { |
||||
// causes the worker thread to wait. Once we move to Java 21, this can be simplified.
|
||||
latch.await(); |
||||
} catch (InterruptedException e) { |
||||
LOG.debug("Interrupted while waiting for DNS resolution"); |
||||
} |
||||
|
||||
return record.get(); |
||||
} |
||||
|
||||
private boolean checkSignature( |
||||
final ENRTreeRoot root, final SECP256K1.PublicKey pubKey, final SECP256K1.Signature sig) { |
||||
Bytes32 hash = |
||||
Hash.keccak256(Bytes.wrap(root.signedContent().getBytes(StandardCharsets.UTF_8))); |
||||
return SECP256K1.verifyHashed(hash, sig, pubKey); |
||||
} |
||||
|
||||
@Override |
||||
public void close() { |
||||
rawTxtRecordsExecutor.shutdown(); |
||||
} |
||||
} |
||||
@ -0,0 +1,32 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import org.apache.tuweni.devp2p.EthereumNodeRecord; |
||||
|
||||
// Adapted from https://github.com/tmio/tuweni and licensed under Apache 2.0
|
||||
/** |
||||
* Reads ENR (Ethereum Node Records) entries passed in from DNS. The visitor may decide to stop the |
||||
* visit by returning false. |
||||
*/ |
||||
public interface DNSVisitor { |
||||
/** |
||||
* Visit a new ENR record. |
||||
* |
||||
* @param enr the ENR record read from DNS |
||||
* @return true to continue visiting, false otherwise |
||||
*/ |
||||
boolean visit(final EthereumNodeRecord enr); |
||||
} |
||||
@ -0,0 +1,49 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import java.util.Arrays; |
||||
import java.util.Map; |
||||
import java.util.stream.Collectors; |
||||
|
||||
// Adapted from https://github.com/tmio/tuweni and licensed under Apache 2.0
|
||||
/** Read Key value pairs from a DNS record */ |
||||
public class KVReader { |
||||
private KVReader() {} |
||||
|
||||
/** |
||||
* Read a key value pair from a DNS record |
||||
* |
||||
* @param record the record to read |
||||
* @return the key value pair |
||||
*/ |
||||
public static Map<String, String> readKV(final String record) { |
||||
return Arrays.stream(record.split("\\s+")) |
||||
.map( |
||||
it -> { |
||||
// if it contains an = or :, split into Map.entry from the first occurrence
|
||||
if (it.contains("=")) { |
||||
return it.split("=", 2); |
||||
} else if (it.contains(":")) { |
||||
return it.split(":", 2); |
||||
} else { |
||||
// this should not happen, as the record should be well-formed
|
||||
return new String[] {it}; |
||||
} |
||||
}) |
||||
.filter(kv -> kv.length == 2) |
||||
.collect(Collectors.toMap(kv -> kv[0], kv -> kv[1])); |
||||
} |
||||
} |
||||
@ -0,0 +1,121 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import static org.assertj.core.api.Assertions.assertThat; |
||||
|
||||
import java.io.IOException; |
||||
import java.security.Security; |
||||
import java.util.concurrent.atomic.AtomicInteger; |
||||
|
||||
import io.vertx.core.DeploymentOptions; |
||||
import io.vertx.core.ThreadingModel; |
||||
import io.vertx.core.Vertx; |
||||
import io.vertx.junit5.Checkpoint; |
||||
import io.vertx.junit5.VertxExtension; |
||||
import io.vertx.junit5.VertxTestContext; |
||||
import org.bouncycastle.jce.provider.BouncyCastleProvider; |
||||
import org.junit.jupiter.api.AfterEach; |
||||
import org.junit.jupiter.api.BeforeAll; |
||||
import org.junit.jupiter.api.BeforeEach; |
||||
import org.junit.jupiter.api.DisplayName; |
||||
import org.junit.jupiter.api.Test; |
||||
import org.junit.jupiter.api.extension.ExtendWith; |
||||
|
||||
@ExtendWith(VertxExtension.class) |
||||
class DNSDaemonTest { |
||||
private static final String holeskyEnr = |
||||
"enrtree://AKA3AM6LPBYEUDMVNU3BSVQJ5AD45Y7YPOHJLEF6W26QOE4VTUDPE@all.holesky.ethdisco.net"; |
||||
// private static MockDNSServer mockDNSServer;
|
||||
private final MockDnsServerVerticle mockDnsServerVerticle = new MockDnsServerVerticle(); |
||||
private DNSDaemon dnsDaemon; |
||||
|
||||
@BeforeAll |
||||
static void setup() throws IOException { |
||||
Security.addProvider(new BouncyCastleProvider()); |
||||
} |
||||
|
||||
@BeforeEach |
||||
@DisplayName("Deploy Mock Dns Server Verticle") |
||||
void prepare(final Vertx vertx, final VertxTestContext vertxTestContext) { |
||||
vertx.deployVerticle(mockDnsServerVerticle, vertxTestContext.succeedingThenComplete()); |
||||
} |
||||
|
||||
@Test |
||||
@DisplayName("Test DNS Daemon with a mock DNS server") |
||||
void testDNSDaemon(final Vertx vertx, final VertxTestContext testContext) |
||||
throws InterruptedException { |
||||
final Checkpoint checkpoint = testContext.checkpoint(); |
||||
dnsDaemon = |
||||
new DNSDaemon( |
||||
holeskyEnr, |
||||
(seq, records) -> checkpoint.flag(), |
||||
0, |
||||
0, |
||||
0, |
||||
"localhost:" + mockDnsServerVerticle.port()); |
||||
|
||||
final DeploymentOptions options = |
||||
new DeploymentOptions().setThreadingModel(ThreadingModel.WORKER).setWorkerPoolSize(1); |
||||
vertx.deployVerticle(dnsDaemon, options); |
||||
} |
||||
|
||||
@Test |
||||
@DisplayName("Test DNS Daemon with periodic lookup to a mock DNS server") |
||||
void testDNSDaemonPeriodic(final Vertx vertx, final VertxTestContext testContext) |
||||
throws InterruptedException { |
||||
// checkpoint should be flagged twice
|
||||
final Checkpoint checkpoint = testContext.checkpoint(2); |
||||
final AtomicInteger pass = new AtomicInteger(0); |
||||
dnsDaemon = |
||||
new DNSDaemon( |
||||
holeskyEnr, |
||||
(seq, records) -> { |
||||
switch (pass.incrementAndGet()) { |
||||
case 1: |
||||
testContext.verify( |
||||
() -> { |
||||
assertThat(seq).isEqualTo(932); |
||||
assertThat(records).hasSize(115); |
||||
}); |
||||
break; |
||||
case 2: |
||||
testContext.verify( |
||||
() -> { |
||||
assertThat(seq).isEqualTo(932); |
||||
assertThat(records).isEmpty(); |
||||
}); |
||||
break; |
||||
default: |
||||
testContext.failNow("Third pass is not expected"); |
||||
} |
||||
checkpoint.flag(); |
||||
}, |
||||
0, |
||||
1, // initial delay
|
||||
300, // second lookup after 300 ms (due to Mock DNS server, we are very quick).
|
||||
"localhost:" + mockDnsServerVerticle.port()); |
||||
|
||||
final DeploymentOptions options = |
||||
new DeploymentOptions().setThreadingModel(ThreadingModel.WORKER).setWorkerPoolSize(1); |
||||
vertx.deployVerticle(dnsDaemon, options); |
||||
} |
||||
|
||||
@AfterEach |
||||
@DisplayName("Check that the vertx worker verticle is still there") |
||||
void lastChecks(final Vertx vertx) { |
||||
assertThat(vertx.deploymentIDs()).isNotEmpty().hasSize(2); |
||||
} |
||||
} |
||||
@ -0,0 +1,71 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import static org.assertj.core.api.Assertions.assertThat; |
||||
|
||||
import java.security.Security; |
||||
|
||||
import org.bouncycastle.jce.provider.BouncyCastleProvider; |
||||
import org.junit.jupiter.api.BeforeAll; |
||||
import org.junit.jupiter.api.Test; |
||||
|
||||
class DNSEntryTest { |
||||
@BeforeAll |
||||
static void setup() { |
||||
Security.addProvider(new BouncyCastleProvider()); |
||||
} |
||||
|
||||
@Test |
||||
void enrTreeRootIsParsed() { |
||||
final String txtRecord = |
||||
"\"enrtree-root:v1 e=KVKZLGARGADDZSMCF65QQMEWLE l=FDXN3SN67NA5DKA4J2GOK7BVQI seq=919 sig=braPmdwMk-g65lQxums6hEy553s3bWMoecW0QQ0IdykIoM9i3We0bxFT0IDONPaFcRePcN-yaOpt8GBfeQ4qDAE\""; |
||||
final DNSEntry entry = DNSEntry.readDNSEntry(txtRecord); |
||||
assertThat(entry).isInstanceOf(DNSEntry.ENRTreeRoot.class); |
||||
final DNSEntry.ENRTreeRoot enrTreeRoot = (DNSEntry.ENRTreeRoot) entry; |
||||
assertThat(enrTreeRoot.enrRoot()).isEqualTo("KVKZLGARGADDZSMCF65QQMEWLE"); |
||||
assertThat(enrTreeRoot.linkRoot()).isEqualTo("FDXN3SN67NA5DKA4J2GOK7BVQI"); |
||||
assertThat(enrTreeRoot.seq()).isEqualTo(919); |
||||
} |
||||
|
||||
@Test |
||||
void enrTreeBranchIsParsed() { |
||||
final String txtRecord = |
||||
"\"enrtree-branch:HVKDJGU7SZMOAMNLBJYQBSKZTM,PVSVWO3NLKHTBAIWOY2NB67RFI," |
||||
+ "6TCKCNWXNGBMNFTGSRKNRO4ERA,37NSKCRJVI5XRRHWLTHW4A6OX4,NV3IJMKDVQHHALY6MAVMPYN6ZU," |
||||
+ "SZCFDMTYOERMIVOUXEWXSGDVEY,FZ26UT4LSG7D2NRX7SV6P3S6BI,7TWNYLCOQ7FEM4IG65WOTL4MVE," |
||||
+ "6OJXGI7NJUESOLL2OZPS4B\" \"EC6Q,437FN4NSGMGFQLAXYWPX5JNACI,FCA7LN6NCO5IAWPG5FH7LX6XJA," |
||||
+ "EYBOZ2NZSHDWDSNHV66XASXOHM,FUVRJMMMKJMCL4L4EBEOWCSOFA\""; |
||||
final DNSEntry entry = DNSEntry.readDNSEntry(txtRecord); |
||||
|
||||
assertThat(entry).isInstanceOf(DNSEntry.ENRTree.class); |
||||
assertThat(((DNSEntry.ENRTree) entry).entries()) |
||||
.containsExactly( |
||||
"HVKDJGU7SZMOAMNLBJYQBSKZTM", |
||||
"PVSVWO3NLKHTBAIWOY2NB67RFI", |
||||
"6TCKCNWXNGBMNFTGSRKNRO4ERA", |
||||
"37NSKCRJVI5XRRHWLTHW4A6OX4", |
||||
"NV3IJMKDVQHHALY6MAVMPYN6ZU", |
||||
"SZCFDMTYOERMIVOUXEWXSGDVEY", |
||||
"FZ26UT4LSG7D2NRX7SV6P3S6BI", |
||||
"7TWNYLCOQ7FEM4IG65WOTL4MVE", |
||||
"6OJXGI7NJUESOLL2OZPS4B", |
||||
"437FN4NSGMGFQLAXYWPX5JNACI", |
||||
"FCA7LN6NCO5IAWPG5FH7LX6XJA", |
||||
"EYBOZ2NZSHDWDSNHV66XASXOHM", |
||||
"FUVRJMMMKJMCL4L4EBEOWCSOFA") |
||||
.doesNotContain("EC6Q"); |
||||
} |
||||
} |
||||
@ -0,0 +1,40 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import static org.assertj.core.api.Assertions.assertThat; |
||||
|
||||
import java.util.Map; |
||||
|
||||
import org.junit.jupiter.api.Test; |
||||
|
||||
public class KVReaderTest { |
||||
// copied from `dig all.holesky.ethdisco.net txt`
|
||||
private static final String txtRecord = |
||||
"enrtree-root:v1 e=KVKZLGARGADDZSMCF65QQMEWLE l=FDXN3SN67NA5DKA4J2GOK7BVQI seq=919 sig=braPmdwMk-g65lQxums6hEy553s3bWMoecW0QQ0IdykIoM9i3We0bxFT0IDONPaFcRePcN-yaOpt8GBfeQ4qDAE"; |
||||
|
||||
@Test |
||||
void parseTXTRecord() { |
||||
final Map<String, String> kv = KVReader.readKV(txtRecord); |
||||
assertThat(kv) |
||||
.containsEntry("enrtree-root", "v1") |
||||
.containsEntry("e", "KVKZLGARGADDZSMCF65QQMEWLE") |
||||
.containsEntry("l", "FDXN3SN67NA5DKA4J2GOK7BVQI") |
||||
.containsEntry("seq", "919") |
||||
.containsEntry( |
||||
"sig", |
||||
"braPmdwMk-g65lQxums6hEy553s3bWMoecW0QQ0IdykIoM9i3We0bxFT0IDONPaFcRePcN-yaOpt8GBfeQ4qDAE"); |
||||
} |
||||
} |
||||
@ -0,0 +1,205 @@ |
||||
/* |
||||
* Copyright contributors to Hyperledger Besu. |
||||
* |
||||
* 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. |
||||
* |
||||
* SPDX-License-Identifier: Apache-2.0 |
||||
*/ |
||||
package org.hyperledger.besu.ethereum.p2p.discovery.dns; |
||||
|
||||
import static java.nio.charset.StandardCharsets.UTF_8; |
||||
|
||||
import java.nio.file.Path; |
||||
import java.util.HashMap; |
||||
import java.util.Locale; |
||||
import java.util.Map; |
||||
|
||||
import com.google.common.base.Splitter; |
||||
import com.google.common.io.Resources; |
||||
import io.vertx.core.AbstractVerticle; |
||||
import io.vertx.core.Promise; |
||||
import io.vertx.core.buffer.Buffer; |
||||
import io.vertx.core.datagram.DatagramPacket; |
||||
import io.vertx.core.datagram.DatagramSocket; |
||||
import io.vertx.core.datagram.DatagramSocketOptions; |
||||
import io.vertx.core.json.JsonObject; |
||||
import org.slf4j.Logger; |
||||
import org.slf4j.LoggerFactory; |
||||
|
||||
/** Mock DNS server verticle. */ |
||||
public class MockDnsServerVerticle extends AbstractVerticle { |
||||
private static final Logger LOG = LoggerFactory.getLogger(MockDnsServerVerticle.class); |
||||
private final Map<String, String> txtRecords = new HashMap<>(); |
||||
private int dnsPort; |
||||
|
||||
@Override |
||||
public void start(final Promise<Void> startPromise) throws Exception { |
||||
final DatagramSocket datagramSocket = vertx.createDatagramSocket(new DatagramSocketOptions()); |
||||
datagramSocket.handler(packet -> handleDatagramPacket(datagramSocket, packet)); |
||||
|
||||
final String dnsEntriesJsonPath = |
||||
Path.of(Resources.getResource("discovery/dns/dns-records.json").toURI()).toString(); |
||||
LOG.debug("Reading DNS entries from: {}", dnsEntriesJsonPath); |
||||
vertx |
||||
.fileSystem() |
||||
.readFile(dnsEntriesJsonPath) |
||||
.compose( |
||||
buffer -> { |
||||
final JsonObject dnsEntries = new JsonObject(buffer.toString()); |
||||
final Map<String, Object> jsonMap = dnsEntries.getMap(); |
||||
jsonMap.forEach((key, value) -> txtRecords.put(key, value.toString())); |
||||
|
||||
// start the server
|
||||
return datagramSocket.listen(0, "127.0.0.1"); |
||||
}) |
||||
.onComplete( |
||||
res -> { |
||||
if (res.succeeded()) { |
||||
LOG.info("Mock Dns Server is now listening {}", res.result().localAddress()); |
||||
dnsPort = res.result().localAddress().port(); |
||||
startPromise.complete(); |
||||
} else { |
||||
startPromise.fail(res.cause()); |
||||
} |
||||
}); |
||||
} |
||||
|
||||
@Override |
||||
public void stop() { |
||||
LOG.info("Stopping Mock DNS Server"); |
||||
} |
||||
|
||||
private void handleDatagramPacket(final DatagramSocket socket, final DatagramPacket packet) { |
||||
LOG.debug("Packet Received"); |
||||
Buffer data = packet.data(); |
||||
final short queryId = getQueryId(data); |
||||
final String queryName = extractQueryName(data.getBytes()); |
||||
|
||||
final Buffer response; |
||||
if (txtRecords.containsKey(queryName)) { |
||||
LOG.debug("Query name found {}", queryName); |
||||
response = createTXTResponse(queryId, queryName, txtRecords.get(queryName)); |
||||
} else { |
||||
LOG.debug("Query name not found: {}", queryName); |
||||
response = createErrorResponse(queryId, queryName); |
||||
} |
||||
|
||||
socket.send(response, packet.sender().port(), packet.sender().host()); |
||||
} |
||||
|
||||
private String extractQueryName(final byte[] buffer) { |
||||
StringBuilder queryName = new StringBuilder(); |
||||
int index = 12; // Skip the DNS header
|
||||
|
||||
while (index < buffer.length) { |
||||
int labelLength = buffer[index] & 0xFF; |
||||
|
||||
if (labelLength == 0) { |
||||
break; |
||||
} |
||||
|
||||
index++; |
||||
|
||||
for (int i = 0; i < labelLength; i++) { |
||||
char c = (char) (buffer[index + i] & 0xFF); |
||||
queryName.append(c); |
||||
} |
||||
|
||||
index += labelLength; |
||||
|
||||
if (index < buffer.length && buffer[index] != 0) { |
||||
queryName.append("."); |
||||
} |
||||
} |
||||
|
||||
return queryName.toString(); |
||||
} |
||||
|
||||
private Buffer createTXTResponse( |
||||
final short queryId, final String queryName, final String txtRecord) { |
||||
final Buffer buffer = Buffer.buffer(); |
||||
|
||||
// Write DNS header
|
||||
buffer.appendShort(queryId); // Query Identifier
|
||||
buffer.appendShort((short) 0x8180); // Flags (Standard query response, No error)
|
||||
buffer.appendShort((short) 1); // Questions count
|
||||
buffer.appendShort((short) 1); // Answers count
|
||||
buffer.appendShort((short) 0); // Authority RRs count
|
||||
buffer.appendShort((short) 0); // Additional RRs count
|
||||
|
||||
// Write query name
|
||||
final Iterable<String> queryLabels = Splitter.on(".").split(queryName); |
||||
for (String label : queryLabels) { |
||||
buffer.appendByte((byte) label.length()); |
||||
buffer.appendString(label); |
||||
} |
||||
buffer.appendByte((byte) 0); // End of query name
|
||||
|
||||
// Write query type and class
|
||||
buffer.appendShort((short) 16); // Type (TXT)
|
||||
buffer.appendShort((short) 1); // Class (IN)
|
||||
|
||||
// Write answer
|
||||
for (String label : queryLabels) { |
||||
buffer.appendByte((byte) label.length()); |
||||
buffer.appendString(label.toLowerCase(Locale.ROOT)); |
||||
} |
||||
buffer.appendByte((byte) 0); // End of answer name
|
||||
|
||||
buffer.appendShort((short) 16); // TXT record type
|
||||
buffer.appendShort((short) 1); // Class (IN)
|
||||
buffer.appendInt(60); // TTL (60 seconds)
|
||||
|
||||
int txtRecordsLength = txtRecord.getBytes(UTF_8).length; |
||||
buffer.appendShort((short) (txtRecordsLength + 1)); // Data length
|
||||
buffer.appendByte((byte) txtRecordsLength); // TXT record length
|
||||
buffer.appendString(txtRecord); |
||||
|
||||
return buffer; |
||||
} |
||||
|
||||
private Buffer createErrorResponse(final short queryId, final String queryName) { |
||||
Buffer buffer = Buffer.buffer(); |
||||
|
||||
// Write DNS header
|
||||
buffer.appendShort(queryId); // Query Identifier
|
||||
buffer.appendShort((short) 0x8183); // Flags (Standard query response, NXDOMAIN error)
|
||||
buffer.appendShort((short) 1); // Questions count
|
||||
buffer.appendShort((short) 0); // Answers count
|
||||
buffer.appendShort((short) 0); // Authority RRs count
|
||||
buffer.appendShort((short) 0); // Additional RRs count
|
||||
|
||||
// Write query name
|
||||
for (String label : Splitter.on(".").split(queryName)) { |
||||
buffer.appendByte((byte) label.length()); |
||||
buffer.appendString(label); |
||||
} |
||||
buffer.appendByte((byte) 0); // End of query name
|
||||
|
||||
// Write query type and class
|
||||
buffer.appendShort((short) 16); // Type (TXT)
|
||||
buffer.appendShort((short) 1); // Class (IN)
|
||||
|
||||
return buffer; |
||||
} |
||||
|
||||
private short getQueryId(final Buffer queryData) { |
||||
return (short) ((queryData.getByte(0) & 0xff) << 8 | (queryData.getByte(1) & 0xff)); |
||||
} |
||||
|
||||
/** |
||||
* Mock server local port |
||||
* |
||||
* @return server port |
||||
*/ |
||||
public int port() { |
||||
return dnsPort; |
||||
} |
||||
} |
||||
@ -0,0 +1,137 @@ |
||||
{ |
||||
"all.holesky.ethdisco.net" : "enrtree-root:v1 e=QXOF2GWVHBKMKW57Y2KSKWYNFQ l=FDXN3SN67NA5DKA4J2GOK7BVQI seq=932 sig=DuA35BkYo9-FBwJ6MPxdNnYfcGMSGunAKUyfNN2gYQhYDBCPFZkr_cfe40Wspl2Vl76w6Ccs-B8ZrXpI_YymrAA", |
||||
"I56MJYJBMXTZZEPBQR6HWNAH7A.all.holesky.ethdisco.net" : "enr:-KO4QCTGqfxu7eEfe6M83e3bQLUgkKWGCdv6Ib5D0gCuQkkvbq1D0CN8UmHgpsddZNKHa2iBl3EIiGhaLBs_NKTxGQuGAYranLv7g2V0aMfGhJsZKtCAgmlkgnY0gmlwhCKH3xKJc2VjcDI1NmsxoQMHuEvotUinJNm_8Vz7412P1yKZ6r5iz9EcYj-9v3weRYRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"IPSUCB6CICZIW6SERKZL7FFTIM.all.holesky.ethdisco.net" : "enr:-KO4QD47Vx9bnFcvE6JNAhrLz6GGgPk9GaJtP95ogjSOFHxlcZjnrT5TQzW9Jyx99XO9rzhK6WSvgdFoA9_54QPQcUaGAYxBy9opg2V0aMfGhJsZKtCAgmlkgnY0gmlwhIe1TLKJc2VjcDI1NmsxoQKMO6bMfiH5DnJNFZgSqUEi6uHNnH2_bMh7hwVXRWTMl4RzbmFwwIN0Y3CCdqmDdWRwgnap", |
||||
"QJM2RVJT7USPDSI5VVFGGDW6JM.all.holesky.ethdisco.net" : "enr:-Ji4QHWntDnLOi4S9GKmF4HY7WrnJuJGaIBrnM3Y75G-8EUpZExnUkaZJtlmzOeJs6WAcYsissKSybUG5rSEiad0s86ByoNldGjHxoSbGSrQgIJpZIJ2NIJpcISLY0UEiXNlY3AyNTZrMaED5hLZweFA_nvWEc-Q7Vxqf2lIYxScF-F4ORxs-rVyHZKDdGNwgtn5g3VkcILZ-Q", |
||||
"C7SDD5OPASV7B2XUOXF5NLBBKU.all.holesky.ethdisco.net" : "enr:-KO4QLo95TIKo_axZA9xafYgl9jQ2ZTDFCQ29znjUwp-6zPUe6o8L9NO3X3n3uMZH8bFGnRmoIhyHLxNoOp2BU6O7xGGAYwoJEiug2V0aMfGhJsZKtCAgmlkgnY0gmlwhKEjElWJc2VjcDI1NmsxoQPIffRacW7k1QukSBfJ8leopO1M5wOv89G06m0SAQDB8oRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"AUQGHXRAP7J3AGI6TUOQVYTYLY.all.holesky.ethdisco.net" : "enr:-KO4QGuiAZHlxH7T5XPcPpRTovca50B0pzDLkgJ-zaxkjT_PO6zsAWQezB-b53yAnqx01Jdj5tQWsvWoaNVfiFw3iw6GAY1nSgXzg2V0aMfGhJsZKtCAgmlkgnY0gmlwhEp2jJuJc2VjcDI1NmsxoQMTiH7XteYOVAHiXAZoacUjo5JYLhQINeFMbPbEY9sA84RzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"WLME2JINTIQACAMD5WZUQ4PRJI.all.holesky.ethdisco.net" : "enr:-J24QIMYTLuDOO1F5w8AL_WGXU6CZmzi05W35Rz8PuVT8b6vUqmUatifQtzuL2Q7REuRY5kYNurUbLHscGx3j1zjTmmGAYrbbtBig2V0aMfGhJsZKtCAgmlkgnY0gmlwhETp6VKJc2VjcDI1NmsxoQKrwy6w-9JGp3dagVeXMZEd3iZGff-rEVTqd4gmkhBRBIN0Y3CCdl-DdWRwgnZf", |
||||
"5JAERI2BPJN45X7IK6SWZOZ2FI.all.holesky.ethdisco.net" : "enr:-KO4QEsCIXXCDLUsTbUOT3ILg3rpga0gZXaG9_YT9_kFk97iRwu_Pr4RlhDvdkg4Y4bl9SBVzP9bFtL7H9AU7QxE7OeGAY1lbo59g2V0aMfGhJsZKtCAgmlkgnY0gmlwhA3Xl1-Jc2VjcDI1NmsxoQPsZi79eOcjTI3Xa2GCBiXRCgtm7wFo19cVlmhQSZ-i64RzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"J7ZIDKH7CKVIYY244QVU6RMPDM.all.holesky.ethdisco.net" : "enr:-KO4QN942TWYsHn5c2-vZhoeXwELvI2zVg2eHk6nzoyTN8Cwcb8n-4_cwQPIU5p7DsuOehtu-raiGxYm4vE_6WUhT6yGAY1ClkGgg2V0aMfGhJsZKtCAgmlkgnY0gmlwhJBbb1yJc2VjcDI1NmsxoQKemKJgEuvyzZofyTm82rbw716cyTA2hf6zSJ73kzl_ZIRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"FFM67SMD4N3SK4ZQTY2HOMU4F4.all.holesky.ethdisco.net" : "enr:-KO4QG4O1MBSzBHtShtqoXXeAycBqcDpuBK2BBwIuK_Qppz5OpJC6Ga3-qDEQJQOtbEYm0yXMhenb50Get_H6Bu9SbGGAY16lghqg2V0aMfGhJsZKtCAgmlkgnY0gmlwhA_rV76Jc2VjcDI1NmsxoQJ1vrJ4fwXiDAhSqIJwbELp2ktd9A0zRLws1li91-aBmoRzbmFwwIN0Y3CCdmCDdWRwgnZg", |
||||
"GZVG4EONSAY6M7SMLJXDCFUF5Q.all.holesky.ethdisco.net" : "enr:-KO4QErAUNKF003oZAYn8UUocPIuq2MTpxHV3gHfrNkThYPbZ366m-mlvXezUX5JDA5iJE-LTWWEPh8JqjEDah5kVimGAYxA2nMcg2V0aMfGhJsZKtCAgmlkgnY0gmlwhEFtWv2Jc2VjcDI1NmsxoQMCgMWZQXkPyMKdwnzdBxQe6rcs25guZtULvfzDjhE71oRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"3AVV65MYCJ7AGFUCKXT2UX2DSQ.all.holesky.ethdisco.net" : "enr:-KO4QEaesvQ1kySNS_mnQfiBr4DZQmkhHmqKEGRQvgyd5K3lNDm3vjs9cMMVTY9FgENpP1o0UGBsapNNfvXIN2gaudGGAY3ulUKIg2V0aMfGhJsZKtCAgmlkgnY0gmlwhDIjTkmJc2VjcDI1NmsxoQNVbUX0SvjLX7d7psFtTTNkKT7x_zHl3f4bSVQrkbK1YoRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"QDCV4SQTQAGHHA3DRA2TR4LNMY.all.holesky.ethdisco.net" : "enr:-KO4QFVXTftQWqwggnKZlVzFmnQz-U5jzIx37kQSltdvU5kuYQHT1mboaEBh92lS0BUvn-aBzLmHu7wX6hhs2xdGw-6GAYrk72-Hg2V0aMfGhJsZKtCAgmlkgnY0gmlwhCJSHduJc2VjcDI1NmsxoQNGPGIxN3h_R3TiUe0Ud2WazTigmsK028DXXuVLna9rtoRzbmFwwIN0Y3CCdTWDdWRwgnU1", |
||||
"366Y3UIIKK2G5CUS7CHNPZMPEM.all.holesky.ethdisco.net" : "enr:-KO4QK1ecw-CGrDDZ4YwFrhgqctD0tWMHKJhUVxsS4um3aUFe3yBHRtVL9uYKk16DurN1IdSKTOB1zNCvjBybjZ_KAqGAYtJ5U8wg2V0aMfGhJsZKtCAgmlkgnY0gmlwhA_MtDmJc2VjcDI1NmsxoQNXD7fj3sscyOKBiHYy14igj1vJYWdKYZH7n3T8qRpIcYRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"LHFO3FXNRHB5B3YSTKUALGMEAI.all.holesky.ethdisco.net" : "enr:-KO4QEuoZibAJnKlhcAENpJiju6nVH5J2or_xnVnX_eputCuTHBVtNJmoRKgDBU0idG4kbxFPPKaWRQ3TdYeIbsAAV-GAYrax-PMg2V0aMfGhJsZKtCAgmlkgnY0gmlwhMIhKIOJc2VjcDI1NmsxoQNCYX5kXJqI2deaVOtsTmUQka7dIocapHSAfnNn_CTL2YRzbmFwwIN0Y3CCdmCDdWRwgnZg", |
||||
"3PMAED3BC2HUS7AMEPGJDKENQY.all.holesky.ethdisco.net" : "enr:-KO4QFMsKiZk64UQsyLVHrxTpTpmdZYzuI-Xgy0gut5NgLulRvbrgQDmdrAT2PQuxK8K9AiplRzJ_i8CtseBD_d2bwGGAYx9HQirg2V0aMfGhJsZKtCAgmlkgnY0gmlwhLBn3miJc2VjcDI1NmsxoQJSdj6d-7J6YsK6vZwRl_zzMSCKauLadYxL8zfjjzOQZYRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"4PFOQY7RKTNLRPXQXKKXD3K6LY.all.holesky.ethdisco.net" : "enr:-KO4QJ8BuQCt7gBXU_26FNx8waHuCzCkG54mErQoBAJrYaw_bdUJT0yQA0vG8gr-dUoS77OX0D4tD-R6e30832ncLMaGAYrbEjQ3g2V0aMfGhJsZKtCAgmlkgnY0gmlwhEEV4tiJc2VjcDI1NmsxoQJHEsWJ3CoSi-1JgkeSogpyRqYvBaJI77-soOcbmB_nyYRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"GUBLA7OPRPBMYMQ76EXDMB7BHY.all.holesky.ethdisco.net" : "enr:-KO4QIFA0MiYPPyzvlUqi5j1dL1RGz6MdFhhLN30iXeNc1JfCS1QqTJciby7ZhlQYwFdVMuk_ptgu530WxiQR-UmZpWGAY2ia8cWg2V0aMfGhJsZKtCAgmlkgnY0gmlwhEt3l4OJc2VjcDI1NmsxoQJRcQCiMhxUex-gtsxf2IWJ6nGita_F8BaPZxTwE310WIRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"VN7EWW4RMUZM6KUOQ43GJ33DWM.all.holesky.ethdisco.net" : "enr:-KO4QI3OPqietyANJtQ9_RUOU6ELbwDgTn39MufjLJ9BEzkwTxEgDcgYekeisrchGWzrzTC8T_2zowbuQhZlTkqNXB2GAY39ItF5g2V0aMfGhJsZKtCAgmlkgnY0gmlwhEFsBbiJc2VjcDI1NmsxoQLa2k_Jy-sjrZ-0305yX_F1ZxDNNfCKIImoL5tyDN3cEYRzbmFwwIN0Y3CCdl6DdWRwgnZe", |
||||
"FDXN3SN67NA5DKA4J2GOK7BVQI.all.holesky.ethdisco.net" : "enrtree-branch:", |
||||
"QDMF4HIR2UEXRJVOX4UJPJTPKA.all.holesky.ethdisco.net" : "enr:-KO4QCeMBK9Ur5AHbkdov7TdALRsHzc48RXNtvR861fcmcxPYH59PthmWiT_pQHfVOH3x9-HK2bG8_h2jm46sZyJ6UeGAY2ZCasag2V0aMfGhJsZKtCAgmlkgnY0gmlwhEFs7nOJc2VjcDI1NmsxoQLT22lM9abRweZb93jeMd4jvuRsXnjQFT2oY5a0rb0cvoRzbmFwwIN0Y3CCdl-DdWRwgnZf", |
||||
"3JSDZJCCWKIEBGPH5EI5VZF4RQ.all.holesky.ethdisco.net" : "enrtree-branch:4PFOQY7RKTNLRPXQXKKXD3K6LY,3AVV65MYCJ7AGFUCKXT2UX2DSQ,5JAERI2BPJN45X7IK6SWZOZ2FI,YUZZDZD57PTNEIB5QL3FEXK2ZA,TMY2W2YBNCXUUNA3Y7QXWVQLRE,MJB42632KKOPGJ2KNY3GPKP66I,QXRV67JYJNOYJDPC5CTKUVG76M,QJM2RVJT7USPDSI5VVFGGDW6JM,I33RZWBACJHNDEXG2RRXMX", |
||||
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||||
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} |
||||
Loading…
Reference in new issue