350 lines
9.7 KiB
JavaScript
350 lines
9.7 KiB
JavaScript
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// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import BigNumber from 'bignumber.js';
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import React, { Component, PropTypes } from 'react';
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import { connect } from 'react-redux';
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import { bindActionCreators } from 'redux';
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import Contracts from '../../contracts';
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import IdentityIcon from '../IdentityIcon';
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import IdentityName from '../IdentityName';
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import { Input, InputAddress } from '../Form';
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import styles from './methodDecoding.css';
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const CONTRACT_CREATE = '0x60606040';
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const TOKEN_METHODS = {
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'0xa9059cbb': 'transfer(to,value)'
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};
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class Method extends Component {
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static contextTypes = {
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api: PropTypes.object.isRequired
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}
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static propTypes = {
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address: PropTypes.string.isRequired,
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tokens: PropTypes.object,
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transaction: PropTypes.object,
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historic: PropTypes.bool
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}
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state = {
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method: null,
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methodName: null,
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methodInputs: null,
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methodParams: null,
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methodSignature: null,
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token: null,
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isContract: false,
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isDeploy: false,
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isReceived: false
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}
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componentDidMount () {
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const { transaction } = this.props;
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this.lookup(transaction);
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}
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componentWillReceiveProps (newProps) {
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const { transaction } = this.props;
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if (newProps.transaction === transaction) {
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return;
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}
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this.lookup(transaction);
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}
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render () {
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const { transaction } = this.props;
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if (!transaction) {
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return null;
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}
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return (
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<div className={ styles.container }>
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{ this.renderAction() }
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{ this.renderGas() }
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</div>
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);
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}
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renderGas () {
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const { historic, transaction } = this.props;
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const { gas, gasPrice } = transaction;
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const gasValue = gas.mul(gasPrice);
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return (
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<div className={ styles.gasDetails }>
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{ historic ? 'Used' : 'Will use' } <span className={ styles.highlight }>{ gas.toFormat(0) } gas ({ gasPrice.div(1000000).toFormat(0) }M/<small>ETH</small>)</span> for a total transaction cost of <span className={ styles.highlight }>{ this.renderEtherValue(gasValue) }</span>
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</div>
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);
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}
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renderAction () {
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const { methodName, methodInputs, methodSignature, token, isDeploy, isReceived } = this.state;
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if (isDeploy) {
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return this.renderDeploy();
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}
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if (methodSignature) {
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if (token && TOKEN_METHODS[methodSignature] && methodInputs) {
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return this.renderTokenAction();
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}
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return methodName
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? this.renderSignatureMethod()
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: this.renderUnknownMethod();
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}
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return isReceived
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? this.renderValueReceipt()
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: this.renderValueTransfer();
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}
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renderTokenAction () {
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const { historic } = this.props;
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const { methodSignature, methodInputs } = this.state;
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const [to, value] = methodInputs;
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const address = to.value;
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switch (TOKEN_METHODS[methodSignature]) {
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case 'transfer(to,value)':
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default:
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return (
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<div className={ styles.details }>
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{ historic ? 'Transferred' : 'Will transfer' } <span className={ styles.highlight }>{ this.renderTokenValue(value.value) }</span> to <span className={ styles.highlight }>{ this.renderAddressName(address) }</span>.
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</div>
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);
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}
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}
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renderDeploy () {
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const { historic, transaction } = this.props;
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if (!historic) {
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return (
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<div className={ styles.details }>
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Will deploy a contract.
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</div>
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);
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}
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return (
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<div className={ styles.details }>
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Deployed a contract at address <span className={ styles.highlight }>{ this.renderAddressName(transaction.creates, false) }</span>.
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</div>
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);
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}
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renderValueReceipt () {
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const { historic, transaction } = this.props;
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const { isContract } = this.state;
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return (
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<div className={ styles.details }>
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{ historic ? 'Received' : 'Will receive' } <span className={ styles.highlight }>{ this.renderEtherValue(transaction.value) }</span> from { isContract ? 'the contract' : '' } <span className={ styles.highlight }>{ this.renderAddressName(transaction.from) }</span>
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</div>
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);
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}
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renderValueTransfer () {
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const { historic, transaction } = this.props;
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const { isContract } = this.state;
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return (
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<div className={ styles.details }>
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{ historic ? 'Transferred' : 'Will transfer' } <span className={ styles.highlight }>{ this.renderEtherValue(transaction.value) }</span> to { isContract ? 'the contract' : '' } <span className={ styles.highlight }>{ this.renderAddressName(transaction.to) }</span>
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</div>
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);
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}
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renderSignatureMethod () {
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const { historic, transaction } = this.props;
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const { methodName } = this.state;
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return (
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<div className={ styles.details }>
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<div className={ styles.description }>
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{ historic ? 'Executed' : 'Will execute' } the <span className={ styles.name }>{ methodName }</span> function on the contract <span className={ styles.highlight }>{ this.renderAddressName(transaction.to) }</span>, transferring <span className={ styles.highlight }>{ this.renderEtherValue(transaction.value) }</span>, passing the following parameters:
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</div>
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<div className={ styles.inputs }>
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{ this.renderInputs() }
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</div>
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</div>
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);
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}
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renderUnknownMethod () {
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const { historic, transaction } = this.props;
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return (
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<div className={ styles.details }>
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{ historic ? 'Executed' : 'Will execute' } <span className={ styles.name }>an unknown/unregistered</span> method on the contract <span className={ styles.highlight }>{ this.renderAddressName(transaction.to) }</span>, transferring <span className={ styles.highlight }>{ this.renderEtherValue(transaction.value) }</span>.
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</div>
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);
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}
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renderInputs () {
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const { methodInputs } = this.state;
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return methodInputs.map((input, index) => {
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switch (input.type) {
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case 'address':
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return (
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<InputAddress
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disabled
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text
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key={ index }
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className={ styles.input }
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value={ input.value }
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label={ input.type } />
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);
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default:
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return (
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<Input
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disabled
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key={ index }
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className={ styles.input }
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value={ this.renderValue(input.value) }
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label={ input.type } />
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);
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}
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});
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}
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renderValue (value) {
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const { api } = this.context;
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if (api.util.isInstanceOf(value, BigNumber)) {
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return value.toFormat(0);
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} else if (api.util.isArray(value)) {
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return api.util.bytesToHex(value);
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}
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return value.toString();
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}
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renderTokenValue (value) {
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const { token } = this.state;
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return (
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<span className={ styles.tokenValue }>
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{ value.div(token.format).toFormat(5) }<small>{ token.tag }</small>
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</span>
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);
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}
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renderEtherValue (value) {
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const { api } = this.context;
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const ether = api.util.fromWei(value);
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return (
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<span className={ styles.etherValue }>
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{ ether.toFormat(5) }<small>ETH</small>
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</span>
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);
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}
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renderAddressName (address, withName = true) {
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return (
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<span className={ styles.address }>
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<IdentityIcon center inline address={ address } className={ styles.identityicon } />
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{ withName ? <IdentityName address={ address } /> : address }
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</span>
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);
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}
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lookup (transaction) {
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const { api } = this.context;
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const { address, tokens } = this.props;
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if (!transaction) {
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return;
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}
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const isReceived = transaction.to === address;
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const token = (tokens || {})[isReceived ? transaction.from : transaction.to];
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this.setState({ token, isReceived });
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if (!transaction.input) {
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return;
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}
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const { signature, paramdata } = api.util.decodeCallData(transaction.input);
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this.setState({ methodSignature: signature, methodParams: paramdata });
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if (!signature || signature === CONTRACT_CREATE || transaction.creates) {
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this.setState({ isDeploy: true });
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return;
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}
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api.eth
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.getCode(isReceived ? transaction.from : transaction.to)
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.then((code) => {
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if (code && code !== '0x') {
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this.setState({ isContract: true });
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}
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return Contracts.get().signatureReg.lookup(signature);
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}).then((method) => {
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let methodInputs = null;
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let methodName = null;
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if (method && method.length) {
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const abi = api.util.methodToAbi(method);
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methodName = abi.name;
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methodInputs = api.util
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.decodeMethodInput(abi, paramdata)
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.map((value, index) => {
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const type = abi.inputs[index].type;
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return { type, value };
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});
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}
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this.setState({ method, methodName, methodInputs });
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})
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.catch((error) => {
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console.error('lookup', error);
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});
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}
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}
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function mapStateToProps (state) {
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const { tokens } = state.balances;
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return {
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tokens
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};
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}
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function mapDispatchToProps (dispatch) {
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return bindActionCreators({}, dispatch);
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}
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export default connect(
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mapStateToProps,
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mapDispatchToProps
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)(Method);
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