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Claim tokens app (#1485)

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* Ethereum pk -> address

* [WIP] Claim tokens app

* cleanup

* refactor

* Fixup address extraction

* Use card instead of Inset (UI alignment)

* Tadaaa! Claiming works.

* Uppercase token name

* Claim location (& overall spacing)

* Remove stray console.error

* Some documentation around utils
This commit is contained in:
kwingram25 2019-08-15 22:40:27 +00:00 committed by Jaco Greeff
parent 1a015ece07
commit a4b0c494d3
20 changed files with 868 additions and 12 deletions
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# @polkadot/app-claims

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{
"name": "@polkadot/app-claims",
"version": "0.34.0-beta.123",
"description": "An app for claiming Polkadot tokens",
"main": "index.js",
"scripts": {},
"author": "Keith Ingram <keith@parity.io>",
"maintainers": [
"Keith Ingram <keith@parity.io>",
"Jaco Greeff <jacogr@gmail.com>"
],
"license": "Apache-2.0",
"dependencies": {
"@babel/runtime": "^7.5.5",
"@polkadot/react-components": "^0.34.0-beta.123"
}
}

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{
"address": "0x002309df96687e44280bb72c3818358faeeb699c",
"msg": "Pay KSMs to the Kusama account:88dc3417d5058ec4b4503e0c12ea1a0a89be200fe98922423d4334014fa6b0ee",
"sig": "0x55bd020bdbbdc02de34e915effc9b18a99002f4c29f64e22e8dcbb69e722ea6c28e1bb53b9484063fbbfd205e49dcc1f620929f520c9c4c3695150f05a28f52a01",
"version": "2"
}

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{
"address": "0xe71026fcbcecc825f848bcba05cb52bc250bca92",
"msg": "Pay KSMs to the Kusama account:5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty",
"sig": "0x98adffe14b1882ba5a861d6aaa10805d52aed56f480e1ece01505a77470f29f15cb4b0a1dc33177761de8270199282baf160f255e1ca0e4c8354b54b0059e40a1c",
"version": "2"
}

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/* eslint-disable @typescript-eslint/camelcase */
// Copyright 2017-2019 @polkadot/app-123code authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { Option } from '@polkadot/types';
import { BalanceOf, EthereumAddress } from '@polkadot/types/interfaces';
import { I18nProps } from '@polkadot/react-components/types';
import { ApiProps } from '@polkadot/react-api/types';
import React from 'react';
import styled from 'styled-components';
import { withApi, withMulti } from '@polkadot/react-api';
import { Button, Card } from '@polkadot/react-components';
import { formatBalance } from '@polkadot/util';
import translate from './translate';
import { addrToChecksum } from './util';
const ClaimInner = styled.div`
font-size: 1.15rem;
display: flex;
flex-direction: column;
justify-content: center;
min-height: 12rem;
align-items: center;
margin: 0 1rem;
h3 {
font-family: monospace;
font-size: 1.5rem;
max-width: 100%;
margin: 0.5rem;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
h2 {
margin: 0.5rem 0 2rem
font-family: monospace;
font-size: 2.5rem;
font-weight: 200;
}
`;
interface Props extends ApiProps, I18nProps {
button: React.ReactNode;
ethereumAddress: EthereumAddress | null;
}
interface State {
claim: BalanceOf | null;
ethereumAddress: EthereumAddress | null;
hasClaim: boolean;
isBusy: boolean;
}
class Claim extends React.PureComponent<Props, State> {
public static getDerivedStateFromProps ({ ethereumAddress }: Props, state: State): Pick<State, never> {
if (ethereumAddress) {
return {
ethereumAddress,
hasClaim: state.claim && state.claim.gten(0)
};
}
return {
hasClaim: false
};
}
public state: State = {
claim: null,
ethereumAddress: null,
hasClaim: false,
isBusy: false
}
public componentDidMount (): void {
this.fetchClaim();
}
public componentDidUpdate (_: Props, prevState: State): void {
const { ethereumAddress } = this.state;
if (ethereumAddress !== prevState.ethereumAddress) {
this.fetchClaim();
}
}
public render (): React.ReactNode {
const { button, t } = this.props;
const { claim, ethereumAddress, hasClaim, isBusy } = this.state;
if (isBusy || !ethereumAddress) {
return null;
}
return (
<Card
isError={!hasClaim || !claim}
isSuccess={hasClaim && !!claim}
>
<ClaimInner>
{t('Your Ethereum account')}
<h3>{addrToChecksum(ethereumAddress.toString())}</h3>
{hasClaim && !!claim
? (
<>
{t('has a valid claim for')}
<h2>{formatBalance(claim)}</h2>
<Button.Group>
{button}
</Button.Group>
</>
)
: (
<>
{t('does not appear to have a valid claim. Please double check that you have signed the transaction correctly on the correct ETH account.')}
</>
)}
</ClaimInner>
</Card>
);
}
private fetchClaim (): void {
const { api } = this.props;
const { ethereumAddress } = this.state;
if (!ethereumAddress) {
return;
}
this.setState({ isBusy: true }, (): void => {
api.query.claims
.claims<Option<BalanceOf>>(ethereumAddress.toHex())
.then((claim): void => {
this.setState({
claim: claim.unwrapOr(null),
isBusy: false
});
});
});
}
}
export default withMulti(
Claim,
translate,
withApi
);

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/* eslint-disable @typescript-eslint/camelcase */
// Copyright 2017-2019 @polkadot/app-123code authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { Compact } from '@polkadot/types';
import { Balance, EcdsaSignature, EthereumAddress } from '@polkadot/types/interfaces';
import { AppProps, I18nProps } from '@polkadot/react-components/types';
import { ApiProps } from '@polkadot/react-api/types';
import React from 'react';
import { Trans } from 'react-i18next';
import styled from 'styled-components';
import CopyToClipboard from 'react-copy-to-clipboard';
import { withApi, withMulti } from '@polkadot/react-api';
import { Button, Card, Columar, Column, Tooltip } from '@polkadot/react-components';
import { InputNumber } from '@polkadot/react-components/InputNumber';
import TxModal, { TxModalState, TxModalProps } from '@polkadot/react-components/TxModal';
import { u8aToHex, u8aToString } from '@polkadot/util';
import { decodeAddress } from '@polkadot/util-crypto';
import ClaimDisplay from './Claim';
import { recoverFromJSON } from './util';
import translate from './translate';
enum Step {
Account = 0,
Sign = 1,
Claim = 2,
}
interface Props extends AppProps, ApiProps, I18nProps, TxModalProps {}
interface State extends TxModalState {
didCopy: boolean;
ethereumAddress?: EthereumAddress | null;
claim?: Balance | null;
signature?: EcdsaSignature | null;
step: Step;
}
const Payload = styled.pre`
cursor: copy;
font-family: monospace;
border: 1px dashed #c2c2c2;
background: #fafafa;
padding: 1rem;
width: 100%;
margin: 1rem 0;
white-space: normal;
word-break: break-all;
`;
const Signature = styled.textarea`
font-family: monospace;
padding: 1rem;
border: 1px solid rgba(34, 36, 38, 0.15);
border-radius: 0.25rem;
margin: 1rem 0;
resize: none;
width: 100%;
`;
class App extends TxModal<Props, State> {
public constructor (props: Props) {
super(props);
this.defaultState = {
...this.defaultState,
claim: null,
didCopy: false,
ethereumAddress: null,
signature: null,
step: 0
};
this.state = this.defaultState;
}
public componentDidUpdate (): void {
if (this.state.didCopy) {
setTimeout((): void => {
this.setState({ didCopy: false });
}, 1000);
}
}
public render (): React.ReactNode {
const { api, t } = this.props;
const { accountId, didCopy, ethereumAddress, signature, step } = this.state;
const payload = accountId
? (
u8aToString(Compact.stripLengthPrefix(api.consts.claims.prefix.toU8a(true))) +
u8aToHex(decodeAddress(accountId), -1, false)
)
: '';
return (
<main>
<header />
<h1>
<Trans>claim your <em>{InputNumber.units}</em> tokens</Trans>
</h1>
<Columar>
<Column>
<Card withBottomMargin>
<h3>{t('1. Select your Polkadot account')}</h3>
{this.renderInputAccount()}
{(step === Step.Account) && (
<Button.Group>
<Button
isPrimary
onClick={this.setStep(Step.Sign)}
label={t('Continue')}
/>
</Button.Group>
)}
</Card>
{(step >= Step.Sign && !!accountId) && (
<Card>
<h3>{t('2. Sign ETH transaction')}</h3>
<CopyToClipboard
onCopy={this.onCopy}
text={payload}
>
<Payload
data-for={`tx-payload`}
data-tip
>
{payload}
</Payload>
</CopyToClipboard>
<Tooltip
place='right'
text={didCopy ? t('copied') : t('click to copy')}
trigger='tx-payload'
/>
<div>
{t('Copy the above string and sign an Ethereum transaction with the account you used during the pre-sale in the wallet of your choice, using the string as the payload, and then paste the transaction signature below')}
:
</div>
<Signature
onChange={this.onChangeSignature}
rows={10}
/>
{(step === Step.Sign) && (
<Button.Group>
<Button
isDisabled={!accountId || !signature}
isPrimary
onClick={this.setStep(Step.Claim)}
label={t('Confirm claim')}
/>
</Button.Group>
)}
</Card>
)}
</Column>
<Column showEmptyText={false}>
{(step >= Step.Claim) && (
<ClaimDisplay
button={this.renderTxButton()}
ethereumAddress={ethereumAddress}
/>
)}
</Column>
</Columar>
</main>
);
}
protected isDisabled = (): boolean => {
const { accountId, signature } = this.state;
return !accountId || !signature;
}
protected isUnsigned = (): boolean => true;
protected submitLabel = (): React.ReactNode => this.props.t('Redeem');
protected txMethod = (): string => 'claims.claim';
protected txParams = (): [string | null, EcdsaSignature | null] => {
const { accountId, signature } = this.state;
return [
accountId ? accountId.toString() : null,
signature || null
];
}
protected onChangeAccount = (accountId: string | null): void => {
this.setState(({ step }: State): Pick<State, never> => {
return {
...(
step > Step.Account
? this.defaultState
: {}
),
accountId
};
});
}
protected onChangeSignature = (event: React.SyntheticEvent<Element>): void => {
const { value: signatureJson } = event.target as HTMLInputElement;
this.setState(({ step }: State): Pick<State, never> => ({
...(
step > Step.Sign
? { step: Step.Sign }
: {}
),
...recoverFromJSON(signatureJson)
}));
}
private onCopy = (): void => {
this.setState({ didCopy: true });
}
private setStep = (step: Step): () => void =>
(): void => {
this.setState({ step });
}
}
export default withMulti(
App,
translate,
withApi
);

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// Copyright 2017-2019 @polkadot/app-123code authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
declare module 'secp256k1/elliptic' {
export function publicKeyConvert (publicKey: Buffer, expanded: boolean): Buffer;
export function recover (msgHash: Buffer, signature: Buffer, recovery: number): Buffer;
}

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// Copyright 2017-2019 @polkadot/app-123code authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { withTranslation } from 'react-i18next';
export default withTranslation(['sudo', 'ui']);

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// Copyright 2017-2019 @polkadot/react-components authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { hexToU8a } from '@polkadot/util';
import { publicToAddr } from './util';
describe('publicToAddr', (): void => {
it('converts a publicKey to address', (): void => {
expect(
publicToAddr(
hexToU8a(
'0x836b35a026743e823a90a0ee3b91bf615c6a757e2b60b9e1dc1826fd0dd16106f7bc1e8179f665015f43c6c81f39062fc2086ed849625c06e04697698b21855e'
)
)
).toEqual('0x0BED7ABd61247635c1973eB38474A2516eD1D884');
});
});

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/* eslint-disable @typescript-eslint/camelcase */
// Copyright 2017-2019 @polkadot/app-123code authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { EthereumAddress, EcdsaSignature } from '@polkadot/types/interfaces';
import secp256k1 from 'secp256k1/elliptic';
import { createType } from '@polkadot/types';
import { assert, hexToU8a, stringToU8a, u8aToBuffer, u8aConcat } from '@polkadot/util';
import { keccakAsHex, keccakAsU8a } from '@polkadot/util-crypto';
interface RecoveredSignature {
error: Error | null;
ethereumAddress: EthereumAddress | null;
signature: EcdsaSignature | null;
}
interface SignatureParts {
recovery: number;
signature: Buffer;
}
// converts an Ethereum address to a checksum representation
export function addrToChecksum (_address: string): string {
const address = _address.toLowerCase();
const hash = keccakAsHex(address.substr(2)).substr(2);
let result = '0x';
for (let n = 0; n < 40; n++) {
result = `${result}${
parseInt(hash[n], 16) > 7
? address[n + 2].toUpperCase()
: address[n + 2]
}`;
}
return result;
}
// convert a give public key to an Ethereum address (the last 20 bytes of an _exapnded_ key keccack)
export function publicToAddr (publicKey: Uint8Array): string {
return addrToChecksum(`0x${keccakAsHex(publicKey).slice(-40)}`);
}
// hash a message for use in signature recovery, adding the standard Ethereum header
export function hashMessage (message: string): Buffer {
const expanded = stringToU8a(`\x19Ethereum Signed Message:\n${message.length.toString()}${message}`);
const hashed = keccakAsU8a(expanded);
return u8aToBuffer(hashed);
}
// split is 65-byte signature into the r, s (combined) and recovery number (derived from v)
export function sigToParts (_signature: string): SignatureParts {
const signature = hexToU8a(_signature);
assert(signature.length === 65, `Invalid signature length, expected 65 found ${signature.length}`);
let v = signature[64];
if (v < 27) {
v += 27;
}
const recovery = v - 27;
assert(recovery === 0 || recovery === 1, `Invalid signature v value`);
return {
recovery,
signature: u8aToBuffer(signature.slice(0, 64))
};
}
// recover an address from a given message and a recover/signature combination
export function recoverAddress (message: string, { recovery, signature }: SignatureParts): string {
const msgHash = hashMessage(message);
const senderPubKey = secp256k1.recover(msgHash, signature, recovery);
return publicToAddr(
secp256k1.publicKeyConvert(senderPubKey, false).slice(1)
);
}
// recover an address from a signature JSON (as supplied by e.g. MyCrypto)
export function recoverFromJSON (signatureJson: string | null): RecoveredSignature {
try {
const { msg, sig } = JSON.parse(signatureJson || '{}');
if (!msg || !sig) {
throw new Error('Invalid signature object');
}
const parts = sigToParts(sig);
return {
error: null,
ethereumAddress: createType('EthereumAddress', recoverAddress(msg, parts)),
signature: createType('EcdsaSignature', u8aConcat(parts.signature, new Uint8Array([parts.recovery])))
};
} catch (error) {
console.error(error);
return {
error,
ethereumAddress: null,
signature: null
};
}
}

23
packages/apps-routing/src/claims.ts Normal file
View File

@ -0,0 +1,23 @@
// Copyright 2017-2019 @polkadot/apps-routing authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { Routes } from './types';
import Claims from '@polkadot/app-claims';
export default ([
{
Component: Claims,
display: {
needsApi: [
'query.claims.claims'
]
},
i18n: {
defaultValue: 'Claim Tokens'
},
icon: 'star',
name: 'claims'
}
] as Routes);

12
packages/apps-routing/src/index.ts
View File

@ -9,9 +9,10 @@ import appSettings from '@polkadot/ui-settings';
import template from './123code';
import accounts from './accounts';
import addressbook from './addressbook';
import claims from './claims';
import contracts from './contracts';
import council from './council';
import dashboard from './dashboard';
// import dashboard from './dashboard';
import democracy from './democracy';
import explorer from './explorer';
import extrinsics from './extrinsics';
@ -27,10 +28,11 @@ import treasury from './treasury';
const routes: Routes = appSettings.uiMode === 'light'
? ([] as Routes).concat(
dashboard,
// dashboard,
explorer,
accounts,
addressbook,
claims,
transfer,
null,
staking,
@ -38,14 +40,14 @@ const routes: Routes = appSettings.uiMode === 'light'
council,
// TODO Not sure about the inclusion of treasury & parachains here
null,
settings,
template
settings
)
: ([] as Routes).concat(
dashboard,
// dashboard,
explorer,
accounts,
addressbook,
claims,
transfer,
null,
staking,

30
packages/react-components/src/Card.tsx
View File

@ -5,17 +5,22 @@
import React from 'react';
import styled from 'styled-components';
import { classes } from './util';
interface Props {
children: React.ReactNode;
className?: string;
isError?: boolean;
isSuccess?: boolean;
withBottomMargin?: boolean;
}
class Card extends React.PureComponent<Props> {
public render (): React.ReactNode {
const { children, className } = this.props;
const { children, className, isError, isSuccess, withBottomMargin } = this.props;
return (
<article className={`ui--Card ${className}`}>
<article className={classes('ui--Card', className, (isError && !isSuccess) && 'error', (!isError && isSuccess) && 'success', withBottomMargin && 'withBottomMargin')}>
{children}
</article>
);
@ -28,6 +33,27 @@ export default styled(Card)`
min-width: 24%;
justify-content: space-around;
&.error {
background: rgba(255, 0, 0, 0.05);
&, h1, h2, h3, h4, h5, h6, p {
color: rgba(156, 0, 0) !important;
}
}
&.success {
border: 1px solid rgb(168, 255, 136);
background: rgba(0, 255, 0, 0.05);
&, h1, h2, h3, h4, h5, h6, p {
color: rgba(34, 125, 0) !important;
}
}
&.withBottomMargin {
margin-bottom: 1.5rem;
}
i.help.circle.icon,
.ui.button.mini,
.ui.button.tiny,

13
packages/react-components/src/Collection.tsx
View File

@ -14,6 +14,7 @@ export interface CollectionProps extends I18nProps {
headerText?: React.ReactNode;
isEmpty?: boolean;
emptyText?: React.ReactNode;
showEmptyText?: boolean;
}
export interface CollectionState {
@ -78,6 +79,10 @@ export default class Collection<P extends CollectionProps, S extends CollectionS
protected renderHeader (): React.ReactNode {
const { buttons, headerText } = this.props;
if (!headerText) {
return null;
}
return (
<div className='ui--Collection-header'>
<h1>{headerText}</h1>
@ -91,12 +96,16 @@ export default class Collection<P extends CollectionProps, S extends CollectionS
}
protected renderEmpty (): React.ReactNode {
const { emptyText, t } = this.props;
const { emptyText = this.props.t('No items'), showEmptyText = true } = this.props;
if (!showEmptyText) {
return null;
}
return (
<article>
<div className='ui--Collection-lowercase'>
{emptyText || t('No items')}
{emptyText}
</div>
</article>
);

23
packages/react-components/src/Inset.tsx
View File

@ -14,6 +14,8 @@ export interface InsetProps extends RouteComponentProps {
className?: string;
children?: React.ReactNode;
isCollapsible?: boolean;
isError?: boolean;
isSuccess?: boolean;
header?: React.ReactNode;
href?: string | null;
withTopMargin?: boolean;
@ -30,7 +32,7 @@ class Inset extends React.PureComponent<InsetProps, State> {
};
public render (): React.ReactNode {
const { children, className, isCollapsible, header, href, withBottomMargin, withTopMargin } = this.props;
const { children, className, isCollapsible, isError, isSuccess, header, href, withBottomMargin, withTopMargin } = this.props;
const { isCollapsed } = this.state;
if (!children) {
@ -44,6 +46,8 @@ class Inset extends React.PureComponent<InsetProps, State> {
'ui--Inset',
href && 'as-link',
isCollapsible && 'collapsible',
(isError && !isSuccess) && 'error',
(!isError && isSuccess) && 'success',
withBottomMargin && 'bottom-margin',
withTopMargin && 'top-margin',
className
@ -106,6 +110,23 @@ export default withRouter(
margin-top: 2rem;
}
&.error {
background: rgba(255, 0, 0, 0.05);
&, h1, h2, h3, h4, h5, h6, p {
color: rgba(156, 0, 0) !important;
}
}
&.success {
border: 1px solid rgb(168, 255, 136);
background: rgba(0, 255, 0, 0.05);
&, h1, h2, h3, h4, h5, h6, p {
color: rgba(34, 125, 0) !important;
}
}
.header {
cursor: pointer;
height: 2rem;

8
packages/react-components/src/TxModal.tsx
View File

@ -106,6 +106,8 @@ class TxModal<P extends TxModalProps, S extends TxModalState> extends TxComponen
});
}
protected isUnsigned: () => boolean = (): boolean => false;
protected txMethod: () => string = (): string => '';
protected txParams: () => any[] = (): any[] => [];
@ -147,7 +149,11 @@ class TxModal<P extends TxModalProps, S extends TxModalState> extends TxComponen
return (
<TxButton
accountId={accountId}
{...(
this.isUnsigned()
? { isUnsigned: true }
: { accountId }
)}
isDisabled={this.isDisabled()}
isPrimary
label={this.submitLabel()}

5
packages/react-components/src/styles/app.css
View File

@ -29,6 +29,11 @@ h1, h2, h3, h4, h5 {
h1 {
text-transform: lowercase;
em {
font-style: normal;
text-transform: none;
}
}
h3, h4, h5 {

2
packages/react-signer/src/Modal.tsx
View File

@ -176,7 +176,7 @@ class Signer extends React.PureComponent<Props, State> {
const { t } = this.props;
const { currentItem, isSendable, isV2 } = this.state;
if (!isV2 || !isSendable || !currentItem) {
if (!isV2 || !isSendable || !currentItem || currentItem.isUnsigned) {
return null;
}

2
tsconfig.json
View File

@ -9,6 +9,8 @@
"@polkadot/app-accounts/*": [ "packages/app-accounts/src/*" ],
"@polkadot/app-address-book": [ "packages/app-address-book/src" ],
"@polkadot/app-address-book/*": [ "packages/app-address-book/src/*" ],
"@polkadot/app-claims": [ "packages/app-claims/src" ],
"@polkadot/app-claims/*": [ "packages/app-claims/src/*" ],
"@polkadot/app-contracts": [ "packages/app-contracts/src" ],
"@polkadot/app-contracts/*": [ "packages/app-contracts/src/*" ],
"@polkadot/app-council": [ "packages/app-council/src" ],