mirror of https://github.com/hyperledger/besu
An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu
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56 lines
2.1 KiB
56 lines
2.1 KiB
/*
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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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pragma solidity >=0.4.0 <0.6.0;
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// THIS CONTRACT IS FOR TESTING PURPOSES ONLY
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// DO NOT USE THIS CONTRACT IN PRODUCTION APPLICATIONS
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contract SimpleNodePermissioning {
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/*
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Node port is not being considered because ATs use random ports
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*/
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struct Enode {
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string enodeId;
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string enodeIp;
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}
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mapping(bytes => Enode) private allowlist;
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// Port is being ignored
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function connectionAllowed(string memory enodeId, string memory ip, uint16) public view returns (bool) {
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return enodeAllowed(enodeId, ip);
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}
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function enodeAllowed(string memory enodeId, string memory sourceEnodeIp) private view returns (bool){
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bytes memory key = computeKey(enodeId, sourceEnodeIp);
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// if enode was found, keccak256 will be different
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return keccak256(bytes(allowlist[key].enodeIp)) != keccak256("");
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}
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function addEnode(string memory enodeId, string memory enodeIp, uint16) public {
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Enode memory newEnode = Enode(enodeId, enodeIp);
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bytes memory key = computeKey(enodeId, enodeIp);
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allowlist[key] = newEnode;
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}
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function removeEnode(string memory enodeId, string memory enodeIp, uint16) public {
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bytes memory key = computeKey(enodeId, enodeIp);
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Enode memory zeros = Enode("", "");
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// replace enode with "zeros"
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allowlist[key] = zeros;
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}
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function computeKey(string memory enodeId, string memory enodeIp) private pure returns (bytes memory) {
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return abi.encode(enodeId, enodeIp);
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}
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}
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