From 4b3e0383235ca4ca0127f24c2e05543bb45a56bb Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Wed, 29 Nov 2017 22:02:43 -0800 Subject: Add contracts to packages, fix most linting errors --- packages/contracts/util/multi_sig_wrapper.ts | 34 ++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 packages/contracts/util/multi_sig_wrapper.ts (limited to 'packages/contracts/util/multi_sig_wrapper.ts') diff --git a/packages/contracts/util/multi_sig_wrapper.ts b/packages/contracts/util/multi_sig_wrapper.ts new file mode 100644 index 000000000..7c13dae97 --- /dev/null +++ b/packages/contracts/util/multi_sig_wrapper.ts @@ -0,0 +1,34 @@ +import ABI = require('ethereumjs-abi'); +import ethUtil = require('ethereumjs-util'); +import * as _ from 'lodash'; +import * as Web3 from 'web3'; + +import {ContractInstance, TransactionDataParams} from './types'; + +export class MultiSigWrapper { + private multiSig: ContractInstance; + constructor(multiSigContractInstance: ContractInstance) { + this.multiSig = multiSigContractInstance; + } + public async submitTransactionAsync(destination: string, from: string, + dataParams: TransactionDataParams, + value: number = 0) { + const {name, abi, args = []} = dataParams; + const encoded = this.encodeFnArgs(name, abi, args); + return this.multiSig.submitTransaction(destination, value, encoded, {from}); + } + public encodeFnArgs(name: string, abi: Web3.AbiDefinition[], args: any[]) { + const abiEntity = _.find(abi, {name}) as Web3.MethodAbi; + if (_.isUndefined(abiEntity)) { + throw new Error(`Did not find abi entry for name: ${name}`); + } + const types = _.map(abiEntity.inputs, input => input.type); + const funcSig = ethUtil.bufferToHex(ABI.methodID(name, types)); + const argsData = _.map(args, arg => { + const target = _.isBoolean(arg) ? +arg : arg; + const targetBuff = ethUtil.toBuffer(target); + return ethUtil.setLengthLeft(targetBuff, 32).toString('hex'); + }); + return funcSig + argsData.join(''); + } +} -- cgit v1.2.3