494 lines
12 KiB
JavaScript
494 lines
12 KiB
JavaScript
export const Contracts = {
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'Identity': 'IdentityGasRelay',
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'SNT': 'SNTController'
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};
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export const Functions = {
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'Identity': {
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'call': 'callGasRelayed',
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'approveAndCall': 'approveAndCallGasRelayed'
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}
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};
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export const Actions = {
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'Availability': 'availability',
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'Transaction': 'transaction'
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};
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const relayerSymmmetricKeyID = "0xd0d905c1c62b810b787141430417caf2b3f54cffadb395b7bb39fdeb8f17266b";
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class StatusGasRelayer {
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constructor(build, web3) {
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if (arguments.length !== 2 || !this.validateBuild(build)) throw new Error("Invalid build");
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this.web3 = web3;
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Object.defineProperties(this, {
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message: {
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value: build._getMessage(web3),
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writable: false
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},
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topic: {
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value: web3.utils.toHex(build.contractName).slice(0, 10),
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writable: false
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},
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kid: {
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value: build.kid,
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writable: false
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}
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});
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if(build.operation === Actions.Transaction){
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Object.defineProperties(this, {
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pubKey: {
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value: build.relayer,
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writable: false
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}
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});
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} else {
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Object.defineProperties(this, {
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skid: {
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value: build.skid,
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writable: false
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}
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});
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}
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}
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post = async (options) => {
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options = options || {};
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let pubKey = options.pubKey || this.pubKey;
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let skid = options.skid || this.skid;
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let kid = options.kid || this.kid;
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if(!kid){
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kid = await this.web3.shh.newKeyPair();
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}
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const sendOptions = {
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ttl: options.ttl || 1000,
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sig: kid,
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powTarget: options.powTarget || 1,
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powTime: options.powTime || 20,
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topic: this.topic,
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payload: this.web3.utils.toHex(this.message)
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};
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if(pubKey){
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sendOptions.pubKey = pubKey;
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} else {
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if(!skid){
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skid = await this.web3.shh.addSymKey(relayerSymmmetricKeyID);
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}
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sendOptions.symKeyID = skid;
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}
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const msgId = await this.web3.shh.post(sendOptions);
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return msgId;
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}
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validateBuild = (build) => {
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return (String(build.constructor) === String(StatusGasRelayer.AvailableRelayers) ||
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String(build.constructor) === String(StatusGasRelayer.Identity)
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);
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}
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static get AvailableRelayers() {
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return AvailableRelayersAction;
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}
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static get Identity() {
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return IdentityGasRelayedAction;
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}
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}
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class Action {
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setGas(token, price, limit){
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this.gasToken = token;
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this.gasPrice = price;
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this.gasLimit = limit;
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return this;
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}
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setOperation(operation){
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this.operation = operation;
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return this;
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}
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setRelayer(relayer){
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this.relayer = relayer;
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return this;
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}
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setRelayersSymKeyID = (skid) => {
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this.skid = skid;
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return this;
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}
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setAsymmetricKeyID = (kid) => {
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this.kid = kid;
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return this;
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}
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}
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class IdentityGasRelayedAction extends Action {
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constructor(contractAddress, accountAddress) {
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super();
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this.contractName = Contracts.Identity;
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this.contractAddress = contractAddress;
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this.accountAddress = accountAddress;
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this.operation = Actions.Transaction;
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return this;
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}
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setContractFunction = contractFunction => {
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this.contractFunction = contractFunction;
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return this;
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}
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setTransaction = (to, value, data) => {
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this.to = to;
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this.value = value;
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this.data = data;
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return this;
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}
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setBaseToken = baseToken => {
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this.baseToken = baseToken;
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return this;
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}
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_nonce = async(contract) => {
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const nonce = await contract.methods.nonce().call();
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return nonce;
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}
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getNonce = async (web3) => {
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const contract = new web3.eth.Contract(identityGasRelayABI, this.contractAddress);
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const nonce = await this._nonce(contract);
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return nonce;
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}
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sign = async web3 => {
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const contract = new web3.eth.Contract(identityGasRelayABI, this.contractAddress);
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const nonce = await this._nonce(contract);
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let hashedMessage;
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switch(this.contractFunction){
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case Functions.Identity.call:
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hashedMessage = await contract.methods.callGasRelayHash(
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this.to,
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this.value,
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web3.utils.soliditySha3({t: 'bytes', v: this.data}),
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nonce,
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this.gasPrice,
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this.gasLimit,
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this.gasToken
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).call();
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break;
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case Functions.Identity.approveAndCall:
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hashedMessage = await contract.methods.deployGasRelayHash(
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this.value,
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web3.utils.soliditySha3({t: 'bytes', v: this.data}),
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nonce,
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this.gasPrice,
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this.gasLimit,
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this.gasToken
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).call();
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break;
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default:
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throw new Error("Function not allowed");
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}
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const signedMessage = await web3.eth.sign(hashedMessage, this.accountAddress);
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return signedMessage;
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}
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post = async (signature, web3, options) => {
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this.nonce = await this.getNonce(web3);
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this.signature = signature;
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const s = new StatusGasRelayer(this, web3);
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return s.post(options);
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}
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_getMessage = web3 => {
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let jsonAbi = identityGasRelayABI.find(x => x.name == this.contractFunction);
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let funCall;
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switch(this.contractFunction){
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case Functions.Identity.call:
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funCall = web3.eth.abi.encodeFunctionCall(jsonAbi, [
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this.to,
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this.value,
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this.data,
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this.nonce,
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this.gasPrice,
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this.gasLimit,
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this.gasToken,
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this.signature
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]);
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break;
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case Functions.Identity.approveAndCall:
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funCall = web3.eth.abi.encodeFunctionCall(jsonAbi, [
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this.baseToken,
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this.to,
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this.value,
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this.data,
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this.nonce,
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this.gasPrice,
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this.gasLimit,
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this.gasToken,
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this.signature
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]);
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break;
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default:
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throw new Error("Function not allowed");
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}
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return {
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'contract': this.contractAddress,
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'address': this.accountAddress,
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'action': Actions.Transaction,
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'encodedFunctionCall': funCall
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};
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}
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}
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class AvailableRelayersAction extends Action {
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constructor(contractName, contractAddress, accountAddress) {
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super();
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this.contractName = contractName;
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this.contractAddress = contractAddress;
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this.accountAddress = accountAddress;
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this.operation = Actions.Availability;
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return this;
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}
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_getMessage = web3 => {
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return {
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contract: this.contractAddress,
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address: this.accountAddress || web3.eth.defaultAccount,
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action: Actions.Availability,
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gasToken: this.gasToken,
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gasPrice: this.gasPrice
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};
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}
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post(web3, options) {
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const s = new StatusGasRelayer(this, web3);
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return s.post(options);
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}
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}
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const identityGasRelayABI = [
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{
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"constant": true,
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"inputs": [
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{
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"name": "_to",
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"type": "address"
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},
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{
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"name": "_value",
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"type": "uint256"
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},
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{
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"name": "_dataHash",
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"type": "bytes32"
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},
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{
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"name": "_nonce",
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"type": "uint256"
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},
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{
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"name": "_gasPrice",
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"type": "uint256"
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},
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{
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"name": "_gasLimit",
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"type": "uint256"
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},
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{
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"name": "_gasToken",
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"type": "address"
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}
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],
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"name": "callGasRelayHash",
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"outputs": [
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{
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"name": "_callGasRelayHash",
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"type": "bytes32"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function",
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"signature": "0xe27e2e5c"
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},
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{
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"constant": true,
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"inputs": [],
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"name": "nonce",
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"outputs": [
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{
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"name": "",
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"type": "uint256"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function",
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"signature": "0xaffed0e0"
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},
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{
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"constant": false,
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"inputs": [
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{
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"name": "_to",
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"type": "address"
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},
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{
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"name": "_value",
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"type": "uint256"
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},
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{
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"name": "_data",
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"type": "bytes"
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},
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{
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"name": "_nonce",
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"type": "uint256"
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},
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{
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"name": "_gasPrice",
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"type": "uint256"
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},
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{
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"name": "_gasLimit",
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"type": "uint256"
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},
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{
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"name": "_gasToken",
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"type": "address"
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},
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{
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"name": "_messageSignatures",
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"type": "bytes"
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}
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],
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"name": "callGasRelayed",
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"outputs": [
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{
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"name": "success",
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"type": "bool"
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}
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],
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"payable": false,
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"stateMutability": "nonpayable",
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"type": "function",
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"signature": "0xfd0dded5"
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},
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{
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"constant": false,
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"inputs": [
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{
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"name": "_baseToken",
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"type": "address"
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},
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{
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"name": "_to",
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"type": "address"
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},
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{
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"name": "_value",
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"type": "uint256"
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},
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{
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"name": "_data",
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"type": "bytes"
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},
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{
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"name": "_nonce",
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"type": "uint256"
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},
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{
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"name": "_gasPrice",
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"type": "uint256"
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},
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{
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"name": "_gasLimit",
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"type": "uint256"
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},
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{
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"name": "_gasToken",
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"type": "address"
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},
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{
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"name": "_messageSignatures",
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"type": "bytes"
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}
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],
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"name": "approveAndCallGasRelayed",
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"outputs": [
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{
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"name": "success",
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"type": "bool"
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}
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],
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"payable": false,
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"stateMutability": "nonpayable",
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"type": "function",
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"signature": "0x59f4ac61"
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},
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{
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"constant": true,
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"inputs": [
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{
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"name": "_value",
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"type": "uint256"
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},
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{
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"name": "_dataHash",
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"type": "bytes32"
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},
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{
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"name": "_nonce",
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"type": "uint256"
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},
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{
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"name": "_gasPrice",
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"type": "uint256"
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},
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{
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"name": "_gasLimit",
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"type": "uint256"
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},
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{
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"name": "_gasToken",
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"type": "address"
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}
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],
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"name": "deployGasRelayHash",
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"outputs": [
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{
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"name": "_callGasRelayHash",
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"type": "bytes32"
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}
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],
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"payable": false,
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"stateMutability": "view",
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"type": "function",
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"signature": "0x86962d85"
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}
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];
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export default StatusGasRelayer;
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