openethereum/js/src/views/Account/Verification/email-store.js

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
import { observable, computed, action } from 'mobx';
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import { bytesToHex } from '@parity/api/util/format';
import { sha3 } from '@parity/api/util/sha3';
import EmailVerificationABI from '~/contracts/abi/email-verification.json';
import VerificationStore, {
LOADING, QUERY_DATA, QUERY_CODE, POSTED_CONFIRMATION, DONE
} from './store';
import { isServerRunning, hasReceivedCode, postToServer } from '~/3rdparty/email-verification';
const ZERO20 = '0x0000000000000000000000000000000000000000';
// name in the `BadgeReg.sol` contract
const EMAIL_VERIFICATION = 'emailverification';
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export default class EmailVerificationStore extends VerificationStore {
@observable email = '';
@computed get isEmailValid () {
// See https://davidcel.is/posts/stop-validating-email-addresses-with-regex/
return this.email && this.email.indexOf('@') >= 0;
}
@computed get isStepValid () {
if (this.step === DONE) {
return true;
}
if (this.error) {
return false;
}
switch (this.step) {
case LOADING:
return this.contract && this.fee && this.accountIsVerified !== null && this.accountHasRequested !== null;
case QUERY_DATA:
return this.isEmailValid && this.consentGiven && this.isAbleToRequest === true;
case QUERY_CODE:
return this.requestTx && this.isCodeValid === true;
case POSTED_CONFIRMATION:
return !!this.confirmationTx;
default:
return false;
}
}
constructor (api, account, isTestnet) {
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super(api, EmailVerificationABI, EMAIL_VERIFICATION, account, isTestnet);
}
isServerRunning = () => {
return isServerRunning(this.isTestnet);
}
checkIfReceivedCode = () => {
return hasReceivedCode(this.email, this.account, this.isTestnet);
}
// If the email has already been used for verification of another account,
// we prevent the user from wasting ETH to request another verification.
@action setIfAbleToRequest = () => {
const { isEmailValid } = this;
if (!isEmailValid) {
this.isAbleToRequest = true;
return;
}
const { contract, email } = this;
const emailHash = sha3.text(email);
this.isAbleToRequest = null;
contract
.instance.reverse
.call({}, [ emailHash ])
.then((address) => {
if (address === ZERO20) {
this.isAbleToRequest = true;
} else {
this.isAbleToRequest = new Error('Another account has been verified using this e-mail.');
}
})
.catch((err) => {
this.error = 'Failed to check if able to send request: ' + err.message;
});
}
// Determine the values relevant for checking if the last request contains
// the same data as the current one.
requestValues = () => [ sha3.text(this.email) ]
shallSkipRequest = (currentValues) => {
const { accountHasRequested } = this;
const lastRequest = this.lastRequestValues;
if (!accountHasRequested) {
return Promise.resolve(false);
}
// If the last email verification `request` for the selected address contains
// the same email as the current one, don't send another request to save ETH.
const skip = currentValues[0] === bytesToHex(lastRequest.emailHash.value);
return Promise.resolve(skip);
}
@action setEmail = (email) => {
this.email = email;
}
requestCode = () => {
const { email, account, isTestnet } = this;
return postToServer({ email, address: account }, isTestnet);
}
}