1 | ;
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | const tslib_1 = require("tslib");
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4 | const client_common_1 = require("@neo-one/client-common");
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5 | const node_core_1 = require("@neo-one/node-core");
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6 | const utils_1 = require("@neo-one/utils");
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7 | const lodash_1 = tslib_1.__importDefault(require("lodash"));
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8 | const context_1 = require("./context");
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9 | exports.signAndRelay = ({ node, privateKey, context, consensusMessage, }) => {
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10 | const payload = node_core_1.ConsensusPayload.sign(new node_core_1.UnsignedConsensusPayload({
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11 | version: context.version,
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12 | previousHash: context.previousHash,
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13 | blockIndex: context.blockIndex,
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14 | validatorIndex: context.myIndex,
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15 | consensusMessage,
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16 | }), privateKey);
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17 | node.relayConsensusPayload(payload);
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18 | };
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19 | exports.getInitialContextAdd = ({ blockchain, publicKey, validators, blockReceivedTimeSeconds, }) => {
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20 | const blockIndex = blockchain.currentBlock.index + 1;
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21 | const primaryIndex = blockIndex % validators.length;
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22 | const myIndex = lodash_1.default.findIndex(validators, (validator) => client_common_1.common.ecPointEqual(validator, publicKey));
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23 | return {
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24 | type: primaryIndex === myIndex ? 'primary' : 'backup',
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25 | previousHash: blockchain.currentBlock.hash,
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26 | blockIndex,
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27 | viewNumber: 0,
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28 | myIndex,
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29 | primaryIndex,
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30 | expectedView: lodash_1.default.range(0, validators.length).map(() => 0),
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31 | validators,
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32 | blockReceivedTimeSeconds,
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33 | };
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34 | };
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35 | function initializeConsensusCommon({ context, blockchain, consensusContext, }) {
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36 | if (context.myIndex < 0) {
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37 | return { context };
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38 | }
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39 | if (context.type === 'primary') {
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40 | return {
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41 | context,
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42 | timerSeconds: Math.max(0, blockchain.settings.secondsPerBlock - (consensusContext.nowSeconds() - context.blockReceivedTimeSeconds)),
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43 | };
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44 | }
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45 | const { secondsPerBlock } = blockchain.settings;
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46 | return {
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47 | context,
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48 | timerSeconds: secondsPerBlock << (context.viewNumber + 1),
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49 | };
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50 | }
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51 | exports.initializeNewConsensus = async ({ blockchain, publicKey, consensusContext, }) => {
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52 | const validators = await blockchain.getValidators([]);
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53 | const blockReceivedTimeSeconds = blockchain.currentBlock.timestamp;
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54 | const blockIndex = blockchain.currentBlock.index + 1;
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55 | const primaryIndex = blockIndex % validators.length;
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56 | const myIndex = lodash_1.default.findIndex(validators, (validator) => client_common_1.common.ecPointEqual(validator, publicKey));
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57 | const context = new context_1.InitialContext({
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58 | type: primaryIndex === myIndex ? 'primary' : 'backup',
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59 | previousHash: blockchain.currentBlock.hash,
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60 | blockIndex,
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61 | viewNumber: 0,
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62 | myIndex,
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63 | primaryIndex,
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64 | expectedView: lodash_1.default.range(0, validators.length).map(() => 0),
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65 | validators,
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66 | blockReceivedTimeSeconds,
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67 | });
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68 | return initializeConsensusCommon({ context, blockchain, consensusContext });
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69 | };
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70 | const getPrimaryIndexType = ({ context, viewNumber, }) => {
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71 | let primaryIndex = (context.blockIndex - viewNumber) % context.validators.length;
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72 | if (primaryIndex < 0) {
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73 | primaryIndex += context.validators.length;
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74 | }
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75 | return {
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76 | type: primaryIndex === context.myIndex ? 'primary' : 'backup',
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77 | primaryIndex,
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78 | };
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79 | };
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80 | exports.initializeConsensus = ({ node, context: contextIn, viewNumber, consensusContext, }) => {
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81 | if (viewNumber <= 0) {
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82 | throw new Error('Programming error');
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83 | }
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84 | const { blockchain } = node;
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85 | let context = contextIn;
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86 | let primaryIndex = (context.blockIndex - viewNumber) % context.validators.length;
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87 | if (primaryIndex < 0) {
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88 | primaryIndex += context.validators.length;
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89 | }
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90 | const type = primaryIndex === context.myIndex ? 'primary' : 'backup';
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91 | context =
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92 | type === 'primary' && context instanceof context_1.SignatureSentContext
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93 | ? context.clone({ type, primaryIndex, viewNumber })
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94 | : context_1.cloneInitial(context, { type, primaryIndex, viewNumber });
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95 | return initializeConsensusCommon({ blockchain, context, consensusContext });
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96 | };
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97 | async function checkSignatures({ node, context, }) {
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98 | const signaturesLength = context.signatures.filter((p) => p !== undefined).length;
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99 | if (signaturesLength >= context.M &&
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100 | context.transactionHashes.every((hash) => context.transactions[hash] !== undefined)) {
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101 | const mutablePublicKeyToSignature = {};
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102 | for (let i = 0, j = 0; i < context.validators.length && j < context.M; i += 1) {
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103 | const validator = context.validators[i];
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104 | const signature = context.signatures[i];
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105 | if (signature !== undefined) {
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106 | mutablePublicKeyToSignature[client_common_1.common.ecPointToHex(validator)] = signature;
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107 | j += 1;
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108 | }
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109 | }
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110 | const script = client_common_1.crypto.createMultiSignatureWitness(context.M, context.validators, mutablePublicKeyToSignature, node_core_1.Witness);
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111 | const block = context.header.clone({
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112 | transactions: context.transactionHashes.map((hash) => context.transactions[hash]).filter(utils_1.utils.notNull),
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113 | script,
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114 | });
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115 | await node.relayBlock(block);
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116 | return { context: context_1.cloneBlockSent(context) };
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117 | }
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118 | return { context };
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119 | }
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120 | exports.checkSignatures = checkSignatures;
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121 | exports.signAndRelayChangeView = ({ node, privateKey, context, }) => {
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122 | exports.signAndRelay({
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123 | node,
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124 | privateKey,
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125 | context,
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126 | consensusMessage: new node_core_1.ChangeViewConsensusMessage({
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127 | viewNumber: context.viewNumber,
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128 | newViewNumber: context.expectedView[context.myIndex],
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129 | }),
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130 | });
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131 | };
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132 | exports.checkExpectedView = ({ context, viewNumber, }) => context.viewNumber !== viewNumber && context.expectedView.filter((p) => p === viewNumber).length >= context.M;
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133 | exports.initializeConsensusInitial = ({ blockchain, context, viewNumber, consensusContext, }) => {
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134 | const { primaryIndex, type } = getPrimaryIndexType({ context, viewNumber });
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135 | return initializeConsensusCommon({
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136 | blockchain,
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137 | context: context_1.cloneInitial(context, { type, primaryIndex, viewNumber }),
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138 | consensusContext,
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139 | });
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140 | };
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141 | exports.incrementExpectedView = (context) => {
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142 | const mutableExpectedView = [...context.expectedView];
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143 | mutableExpectedView[context.myIndex] += 1;
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144 | return mutableExpectedView;
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145 | };
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146 | const requestChangeViewBackup = ({ context: contextIn, node, privateKey, consensusContext, }) => {
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147 | const context = contextIn.cloneViewChanging({
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148 | expectedView: exports.incrementExpectedView(contextIn),
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149 | });
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150 | exports.signAndRelayChangeView({ context, node, privateKey });
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151 | const viewNumber = context.expectedView[context.myIndex];
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152 | if (exports.checkExpectedView({ context, viewNumber })) {
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153 | return exports.initializeConsensusInitial({
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154 | blockchain: node.blockchain,
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155 | context,
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156 | viewNumber,
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157 | consensusContext,
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158 | });
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159 | }
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160 | return { context };
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161 | };
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162 | exports.addTransaction = async ({ context: contextIn, node, privateKey, transaction, verify, consensusContext, }) => {
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163 | let context = contextIn;
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164 | const { blockchain } = node;
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165 | const tx = await blockchain.transaction.tryGet({ hash: transaction.hash });
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166 | if (tx !== undefined) {
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167 | return { context };
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168 | }
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169 | if (verify) {
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170 | let verified = true;
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171 | try {
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172 | const { verifications } = await blockchain.verifyTransaction({
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173 | transaction,
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174 | memPool: Object.values(context.transactions).filter(utils_1.utils.notNull),
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175 | });
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176 | verified = verifications.every(({ failureMessage }) => failureMessage === undefined);
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177 | }
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178 | catch (_a) {
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179 | verified = false;
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180 | }
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181 | if (!verified) {
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182 | return { context };
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183 | }
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184 | }
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185 | context = context.clone({
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186 | transactions: Object.assign(Object.assign({}, context.transactions), { [transaction.hashHex]: transaction }),
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187 | });
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188 | const transactionsLength = Object.values(context.transactions).length;
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189 | if (context.transactionHashes.length === transactionsLength) {
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190 | const validators = await blockchain.getValidators(Object.values(context.transactions).filter(utils_1.utils.notNull));
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191 | const consensusAddress = client_common_1.crypto.getConsensusAddress(validators);
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192 | if (client_common_1.common.uInt160Equal(consensusAddress, context.header.nextConsensus)) {
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193 | const mutableSignatures = [...context.signatures];
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194 | mutableSignatures[context.myIndex] = client_common_1.crypto.sign({
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195 | message: context.header.message,
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196 | privateKey,
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197 | });
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198 | const newContext = context.cloneSignatureSent({ signatures: mutableSignatures });
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199 | exports.signAndRelay({
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200 | node,
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201 | context: newContext,
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202 | privateKey,
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203 | consensusMessage: new node_core_1.PrepareResponseConsensusMessage({
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204 | viewNumber: newContext.viewNumber,
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205 | signature: utils_1.utils.nullthrows(mutableSignatures[newContext.myIndex]),
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206 | }),
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207 | });
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208 | return checkSignatures({ node, context: newContext });
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209 | }
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210 | return requestChangeViewBackup({
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211 | context,
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212 | node,
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213 | privateKey,
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214 | consensusContext,
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215 | });
|
216 | }
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217 | return { context };
|
218 | };
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219 |
|
220 | //# 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{ common, crypto, ECPoint, PrivateKey } from '@neo-one/client-common';\nimport {\n  Blockchain,\n  ChangeViewConsensusMessage,\n  ConsensusMessage,\n  ConsensusPayload,\n  Node,\n  PrepareResponseConsensusMessage,\n  Transaction,\n  UnsignedConsensusPayload,\n  Witness,\n} from '@neo-one/node-core';\nimport { utils as commonUtils } from '@neo-one/utils';\nimport _ from 'lodash';\nimport { ConsensusContext } from './ConsensusContext';\nimport {\n  BlockSentContext,\n  cloneBlockSent,\n  cloneInitial,\n  Context,\n  HeaderContext,\n  InitialContext,\n  RequestReceivedContext,\n  SignatureSentContext,\n  Type,\n  ViewChangingContext,\n} from './context';\nimport { Result } from './types';\n\nexport const signAndRelay = ({\n  node,\n  privateKey,\n  context,\n  consensusMessage,\n}: {\n  readonly node: Node;\n  readonly privateKey: PrivateKey;\n  readonly context: Context;\n  readonly consensusMessage: ConsensusMessage;\n}) => {\n  const payload = ConsensusPayload.sign(\n    new UnsignedConsensusPayload({\n      version: context.version,\n      previousHash: context.previousHash,\n      blockIndex: context.blockIndex,\n      validatorIndex: context.myIndex,\n      consensusMessage,\n    }),\n\n    privateKey,\n  );\n\n  node.relayConsensusPayload(payload);\n};\n\nexport const getInitialContextAdd = ({\n  blockchain,\n  publicKey,\n  validators,\n  blockReceivedTimeSeconds,\n}: {\n  readonly blockchain: Blockchain;\n  readonly publicKey: ECPoint;\n  readonly validators: readonly ECPoint[];\n  readonly blockReceivedTimeSeconds?: number;\n}) => {\n  const blockIndex = blockchain.currentBlock.index + 1;\n  const primaryIndex = blockIndex % validators.length;\n  const myIndex = _.findIndex(validators, (validator) => common.ecPointEqual(validator, publicKey));\n\n  return {\n    type: primaryIndex === myIndex ? 'primary' : 'backup',\n    previousHash: blockchain.currentBlock.hash,\n    blockIndex,\n    viewNumber: 0,\n    myIndex,\n    primaryIndex,\n    expectedView: _.range(0, validators.length).map(() => 0),\n    validators,\n    blockReceivedTimeSeconds,\n  };\n};\n\nfunction initializeConsensusCommon<TContext extends InitialContext | SignatureSentContext>({\n  context,\n  blockchain,\n  consensusContext,\n}: {\n  readonly context: TContext;\n  readonly blockchain: Blockchain;\n  readonly consensusContext: ConsensusContext;\n}): Result<TContext> {\n  if (context.myIndex < 0) {\n    return { context };\n  }\n\n  if (context.type === 'primary') {\n    return {\n      context,\n      timerSeconds: Math.max(\n        0,\n        blockchain.settings.secondsPerBlock - (consensusContext.nowSeconds() - context.blockReceivedTimeSeconds),\n      ),\n    };\n  }\n\n  const { secondsPerBlock } = blockchain.settings;\n\n  return {\n    context,\n    // tslint:disable-next-line no-bitwise\n    timerSeconds: secondsPerBlock << (context.viewNumber + 1),\n  };\n}\n\nexport const initializeNewConsensus = async ({\n  blockchain,\n  publicKey,\n  consensusContext,\n}: {\n  readonly blockchain: Blockchain;\n  readonly publicKey: ECPoint;\n  readonly consensusContext: ConsensusContext;\n}): Promise<Result<InitialContext>> => {\n  const validators = await blockchain.getValidators([]);\n  const blockReceivedTimeSeconds = blockchain.currentBlock.timestamp;\n  const blockIndex = blockchain.currentBlock.index + 1;\n  const primaryIndex = blockIndex % validators.length;\n  const myIndex = _.findIndex(validators, (validator) => common.ecPointEqual(validator, publicKey));\n\n  const context = new InitialContext({\n    type: primaryIndex === myIndex ? 'primary' : 'backup',\n    previousHash: blockchain.currentBlock.hash,\n    blockIndex,\n    viewNumber: 0,\n    myIndex,\n    primaryIndex,\n    expectedView: _.range(0, validators.length).map(() => 0),\n    validators,\n    blockReceivedTimeSeconds,\n  });\n\n  return initializeConsensusCommon({ context, blockchain, consensusContext });\n};\n\nconst getPrimaryIndexType = ({\n  context,\n  viewNumber,\n}: {\n  readonly context: Context;\n  readonly viewNumber: number;\n}): {\n  readonly type: Type;\n  readonly primaryIndex: number;\n} => {\n  let primaryIndex = (context.blockIndex - viewNumber) % context.validators.length;\n  if (primaryIndex < 0) {\n    primaryIndex += context.validators.length;\n  }\n\n  return {\n    type: primaryIndex === context.myIndex ? 'primary' : 'backup',\n    primaryIndex,\n  };\n};\n\nexport const initializeConsensus = ({\n  node,\n  context: contextIn,\n  viewNumber,\n  consensusContext,\n}: {\n  readonly node: Node;\n  readonly context: Context;\n  readonly viewNumber: number;\n  readonly consensusContext: ConsensusContext;\n}): Result<InitialContext | SignatureSentContext> => {\n  if (viewNumber <= 0) {\n    throw new Error('Programming error');\n  }\n  const { blockchain } = node;\n  let context = contextIn;\n  let primaryIndex = (context.blockIndex - viewNumber) % context.validators.length;\n  if (primaryIndex < 0) {\n    primaryIndex += context.validators.length;\n  }\n  const type = primaryIndex === context.myIndex ? 'primary' : 'backup';\n  context =\n    type === 'primary' && context instanceof SignatureSentContext\n      ? context.clone({ type, primaryIndex, viewNumber })\n      : cloneInitial(context, { type, primaryIndex, viewNumber });\n\n  return initializeConsensusCommon({ blockchain, context, consensusContext });\n};\n\nexport async function checkSignatures<TContext extends HeaderContext>({\n  node,\n  context,\n}: {\n  readonly node: Node;\n  readonly context: TContext;\n}): Promise<Result<TContext | BlockSentContext>> {\n  const signaturesLength = context.signatures.filter((p) => p !== undefined).length;\n\n  if (\n    signaturesLength >= context.M &&\n    context.transactionHashes.every((hash) => context.transactions[hash] !== undefined)\n  ) {\n    const mutablePublicKeyToSignature: { [key: string]: Buffer } = {};\n    // tslint:disable-next-line no-loop-statement\n    for (let i = 0, j = 0; i < context.validators.length && j < context.M; i += 1) {\n      const validator = context.validators[i];\n      const signature = context.signatures[i];\n      if (signature !== undefined) {\n        mutablePublicKeyToSignature[common.ecPointToHex(validator)] = signature;\n        j += 1;\n      }\n    }\n    const script = crypto.createMultiSignatureWitness(\n      context.M,\n      context.validators,\n      mutablePublicKeyToSignature,\n      Witness,\n    );\n\n    const block = context.header.clone({\n      transactions: context.transactionHashes.map((hash) => context.transactions[hash]).filter(commonUtils.notNull),\n      script,\n    });\n\n    await node.relayBlock(block);\n\n    return { context: cloneBlockSent(context) };\n  }\n\n  return { context };\n}\n\nexport const signAndRelayChangeView = ({\n  node,\n  privateKey,\n  context,\n}: {\n  readonly node: Node;\n  readonly privateKey: PrivateKey;\n  readonly context: Context;\n}) => {\n  signAndRelay({\n    node,\n    privateKey,\n    context,\n    consensusMessage: new ChangeViewConsensusMessage({\n      viewNumber: context.viewNumber,\n      newViewNumber: context.expectedView[context.myIndex],\n    }),\n  });\n};\n\nexport const checkExpectedView = ({\n  context,\n  viewNumber,\n}: {\n  readonly context: Context;\n  readonly viewNumber: number;\n}) => context.viewNumber !== viewNumber && context.expectedView.filter((p) => p === viewNumber).length >= context.M;\n\nexport const initializeConsensusInitial = ({\n  blockchain,\n  context,\n  viewNumber,\n  consensusContext,\n}: {\n  readonly blockchain: Blockchain;\n  readonly context: Context;\n  readonly viewNumber: number;\n  readonly consensusContext: ConsensusContext;\n}): Result<InitialContext> => {\n  const { primaryIndex, type } = getPrimaryIndexType({ context, viewNumber });\n\n  return initializeConsensusCommon({\n    blockchain,\n    context: cloneInitial(context, { type, primaryIndex, viewNumber }),\n    consensusContext,\n  });\n};\n\nexport const incrementExpectedView = (context: Context): readonly number[] => {\n  const mutableExpectedView = [...context.expectedView];\n  mutableExpectedView[context.myIndex] += 1;\n\n  return mutableExpectedView;\n};\n\nconst requestChangeViewBackup = ({\n  context: contextIn,\n  node,\n  privateKey,\n  consensusContext,\n}: {\n  readonly context: RequestReceivedContext;\n  readonly node: Node;\n  readonly privateKey: PrivateKey;\n  readonly consensusContext: ConsensusContext;\n}): Result<InitialContext | ViewChangingContext> => {\n  const context = contextIn.cloneViewChanging({\n    expectedView: incrementExpectedView(contextIn),\n  });\n\n  signAndRelayChangeView({ context, node, privateKey });\n\n  const viewNumber = context.expectedView[context.myIndex];\n  if (checkExpectedView({ context, viewNumber })) {\n    return initializeConsensusInitial({\n      blockchain: node.blockchain,\n      context,\n      viewNumber,\n      consensusContext,\n    });\n  }\n\n  return { context };\n};\n\nexport const addTransaction = async ({\n  context: contextIn,\n  node,\n  privateKey,\n  transaction,\n  verify,\n  consensusContext,\n}: {\n  readonly context: RequestReceivedContext;\n  readonly node: Node;\n  readonly privateKey: PrivateKey;\n  readonly transaction: Transaction;\n  readonly verify: boolean;\n  readonly consensusContext: ConsensusContext;\n}): Promise<\n  Result<RequestReceivedContext | InitialContext | ViewChangingContext | SignatureSentContext | BlockSentContext>\n> => {\n  let context = contextIn;\n  const { blockchain } = node;\n  const tx = await blockchain.transaction.tryGet({ hash: transaction.hash });\n  if (tx !== undefined) {\n    return { context };\n  }\n  if (verify) {\n    let verified = true;\n    try {\n      const { verifications } = await blockchain.verifyTransaction({\n        transaction,\n        memPool: Object.values(context.transactions).filter(commonUtils.notNull),\n      });\n      verified = verifications.every(({ failureMessage }) => failureMessage === undefined);\n    } catch {\n      verified = false;\n    }\n    if (!verified) {\n      return { context };\n    }\n  }\n\n  context = context.clone({\n    transactions: {\n      ...context.transactions,\n      [transaction.hashHex]: transaction,\n    },\n  });\n\n  const transactionsLength = Object.values(context.transactions).length;\n  if (context.transactionHashes.length === transactionsLength) {\n    const validators = await blockchain.getValidators(Object.values(context.transactions).filter(commonUtils.notNull));\n\n    const consensusAddress = crypto.getConsensusAddress(validators);\n    if (common.uInt160Equal(consensusAddress, context.header.nextConsensus)) {\n      const mutableSignatures = [...context.signatures];\n      mutableSignatures[context.myIndex] = crypto.sign({\n        message: context.header.message,\n        privateKey,\n      });\n\n      const newContext = context.cloneSignatureSent({ signatures: mutableSignatures });\n      signAndRelay({\n        node,\n        context: newContext,\n        privateKey,\n        consensusMessage: new PrepareResponseConsensusMessage({\n          viewNumber: newContext.viewNumber,\n          signature: commonUtils.nullthrows(mutableSignatures[newContext.myIndex]),\n        }),\n      });\n\n      return checkSignatures({ node, context: newContext });\n    }\n\n    return requestChangeViewBackup({\n      context,\n      node,\n      privateKey,\n      consensusContext,\n    });\n  }\n\n  return { context };\n};\n"]}
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