MyCrypto/common/libs/validators.ts

408 lines
12 KiB
TypeScript

import { toChecksumAddress, isValidPrivate } from 'ethereumjs-util';
import { isValidChecksumAddress as isValidChecksumRSKAddress } from 'rskjs-util';
import WalletAddressValidator from 'wallet-address-validator';
import { Validator } from 'jsonschema';
import BN from 'bn.js';
import { dPathRegex, ETC_LEDGER, ETH_SINGULAR } from 'config/dpaths';
import { translateRaw } from 'translations';
import { stripHexPrefix } from 'libs/formatters';
import { isPositiveInteger } from 'utils/helpers';
import {
GAS_LIMIT_LOWER_BOUND,
GAS_LIMIT_UPPER_BOUND,
GAS_PRICE_GWEI_LOWER_BOUND,
GAS_PRICE_GWEI_UPPER_BOUND
} from 'config/constants';
import { JsonRpcResponse } from './nodes/rpc/types';
import { normalise } from './ens';
import { EAC_SCHEDULING_CONFIG } from './scheduling';
export function getIsValidAddressFunction(chainId: number) {
if (chainId === 30 || chainId === 31) {
return (address: string) => isValidRSKAddress(address, chainId);
}
return isValidETHAddress;
}
export function isValidAddress(address: string, chainId: number) {
return getIsValidAddressFunction(chainId)(address);
}
function isValidETHLikeAddress(address: string, extraChecks?: () => boolean): boolean {
if (address === '0x0000000000000000000000000000000000000000') {
return false;
}
if (address.substring(0, 2) !== '0x') {
return false;
} else if (!/^(0x)?[0-9a-f]{40}$/i.test(address)) {
return false;
} else if (/^(0x)?[0-9a-f]{40}$/.test(address) || /^(0x)?[0-9A-F]{40}$/.test(address)) {
return true;
} else {
return extraChecks ? extraChecks() : false;
}
}
export function isValidETHAddress(address: string): boolean {
return isValidETHLikeAddress(address, () => isChecksumAddress(address));
}
export function isValidRSKAddress(address: string, chainId: number): boolean {
return isValidETHLikeAddress(address, () => isValidChecksumRSKAddress(address, chainId));
}
export const isCreationAddress = (address: string): boolean =>
address === '0x0' || address === '0x0000000000000000000000000000000000000000';
export function isValidBTCAddress(address: string): boolean {
return WalletAddressValidator.validate(address, 'BTC');
}
export function isValidHex(str: string): boolean {
if (str === '') {
return true;
}
str = str.substring(0, 2) === '0x' ? str.substring(2).toUpperCase() : str.toUpperCase();
const re = /^[0-9A-F]*$/g; // Match 0 -> unlimited times, 0 being "0x" case
return re.test(str);
}
export function isValidENSorEtherAddress(address: string): boolean {
return isValidETHAddress(address) || isValidENSAddress(address);
}
export function isValidENSName(str: string) {
try {
return (
str.length > 6 && !str.includes('.') && normalise(str) !== '' && str.substring(0, 2) !== '0x'
);
} catch (e) {
return false;
}
}
export function isValidENSAddress(address: string): boolean {
try {
const normalized = normalise(address);
const tld = normalized.substr(normalized.lastIndexOf('.') + 1);
const validTLDs = {
eth: true,
test: true,
reverse: true
};
if (validTLDs[tld as keyof typeof validTLDs]) {
return true;
}
} catch (e) {
return false;
}
return false;
}
function isChecksumAddress(address: string): boolean {
return address === toChecksumAddress(address);
}
export function isValidPrivKey(privkey: string | Buffer): boolean {
if (typeof privkey === 'string') {
const strippedKey = stripHexPrefix(privkey);
const initialCheck = strippedKey.length === 64;
if (initialCheck) {
const keyBuffer = Buffer.from(strippedKey, 'hex');
return isValidPrivate(keyBuffer);
}
return false;
} else if (privkey instanceof Buffer) {
return privkey.length === 32 && isValidPrivate(privkey);
} else {
return false;
}
}
export function isValidEncryptedPrivKey(privkey: string): boolean {
if (typeof privkey === 'string') {
return privkey.length === 128 || privkey.length === 132;
} else {
return false;
}
}
export const validNumber = (num: number) => isFinite(num) && num >= 0;
export const validPositiveNumber = (num: number) => validNumber(num) && num !== 0;
export const validDecimal = (input: string, decimal: number) => {
const arr = input.split('.');
// Only a single decimal can exist.
if (arr.length > 2) {
return false;
}
const fractionPortion = arr[1];
if (!fractionPortion || fractionPortion.length === 0) {
return true;
}
const decimalLength = fractionPortion.length;
return decimalLength <= decimal;
};
export function isPositiveIntegerOrZero(num: number): boolean {
if (isNaN(num) || !isFinite(num)) {
return false;
}
return num >= 0 && parseInt(num.toString(), 10) === num;
}
export function isValidPath(dPath: string) {
// ETC Ledger is incorrect up due to an extra ' at the end of it
if (dPath === ETC_LEDGER.value) {
return true;
}
// SingularDTV is incorrect due to using a 0 instead of a 44 as the purpose
if (dPath === ETH_SINGULAR.value) {
return true;
}
return dPathRegex.test(dPath);
}
export const isValidValue = (value: string) =>
!!(value && isFinite(Number(value)) && Number(value) >= 0);
export const gasLimitValidator = (gasLimit: number | string) => {
const gasLimitFloat = typeof gasLimit === 'string' ? Number(gasLimit) : gasLimit;
return (
validNumber(gasLimitFloat) &&
gasLimitFloat >= GAS_LIMIT_LOWER_BOUND &&
gasLimitFloat <= GAS_LIMIT_UPPER_BOUND
);
};
export const gasPriceValidator = (gasPrice: number | string): boolean => {
const gasPriceFloat = typeof gasPrice === 'string' ? Number(gasPrice) : gasPrice;
return (
validNumber(gasPriceFloat) &&
gasPriceFloat >= GAS_PRICE_GWEI_LOWER_BOUND &&
gasPriceFloat <= GAS_PRICE_GWEI_UPPER_BOUND
);
};
export const timeBountyValidator = (timeBounty: BN | number | string | null): boolean => {
if (!timeBounty) {
return false;
}
if (timeBounty instanceof BN) {
return (
timeBounty.gte(EAC_SCHEDULING_CONFIG.TIME_BOUNTY_MIN) &&
timeBounty.lte(EAC_SCHEDULING_CONFIG.TIME_BOUNTY_MAX)
);
}
const timeBountyFloat = typeof timeBounty === 'string' ? Number(timeBounty) : timeBounty;
return validNumber(timeBountyFloat);
};
export const isValidByteCode = (byteCode: string) =>
byteCode && byteCode.length > 0 && byteCode.length % 2 === 0;
export const isValidAbiJson = (abiJson: string) =>
abiJson && abiJson.startsWith('[') && abiJson.endsWith(']');
// JSONSchema Validations for Rpc responses
const v = new Validator();
export const schema = {
RpcNode: {
type: 'object',
additionalProperties: false,
properties: {
jsonrpc: { type: 'string' },
id: { oneOf: [{ type: 'string' }, { type: 'integer' }] },
result: {
oneOf: [{ type: 'string' }, { type: 'array' }, { type: 'object' }]
},
status: { type: 'string' },
message: { type: 'string', maxLength: 2 }
}
}
};
export const isValidNonce = (value: string): boolean => {
let valid;
if (value === '0') {
valid = true;
} else if (!value) {
valid = false;
} else {
valid = isPositiveInteger(+value);
}
return valid;
};
function isValidResult(response: JsonRpcResponse, schemaFormat: typeof schema.RpcNode): boolean {
return v.validate(response, schemaFormat).valid;
}
function formatErrors(response: JsonRpcResponse, apiType: string) {
if (response.error) {
// Metamask errors are sometimes full-blown stacktraces, no bueno. Instead,
// We'll just take the first line of it, and the last thing after all of
// the colons. An example error message would be:
// "Error: Metamask Sign Tx Error: User rejected the signature."
const lines = response.error.message.split('\n');
if (lines.length > 2) {
return lines[0].split(':').pop();
} else {
return `${response.error.message} ${response.error.data || ''}`;
}
}
return `Invalid ${apiType} Error`;
}
enum API_NAME {
Get_Balance = 'Get Balance',
Estimate_Gas = 'Estimate Gas',
Call_Request = 'Call Request',
Token_Balance = 'Token Balance',
Transaction_Count = 'Transaction Count',
Current_Block = 'Current Block',
Raw_Tx = 'Raw Tx',
Send_Transaction = 'Send Transaction',
Sign_Message = 'Sign Message',
Get_Accounts = 'Get Accounts',
Net_Version = 'Net Version',
Transaction_By_Hash = 'Transaction By Hash',
Transaction_Receipt = 'Transaction Receipt'
}
const isValidEthCall = (response: JsonRpcResponse, schemaType: typeof schema.RpcNode) => (
apiName: API_NAME,
cb?: (res: JsonRpcResponse) => any
) => {
if (!isValidResult(response, schemaType)) {
if (cb) {
return cb(response);
}
throw new Error(formatErrors(response, apiName));
}
return response;
};
export const isValidGetBalance = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Get_Balance);
export const isValidEstimateGas = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Estimate_Gas);
export const isValidCallRequest = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Call_Request);
export const isValidTokenBalance = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Token_Balance, () => ({
result: 'Failed'
}));
export const isValidTransactionCount = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Transaction_Count);
export const isValidTransactionByHash = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Transaction_By_Hash);
export const isValidTransactionReceipt = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Transaction_Receipt);
export const isValidCurrentBlock = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Current_Block);
export const isValidRawTxApi = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Raw_Tx);
export const isValidSendTransaction = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Send_Transaction);
export const isValidSignMessage = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Sign_Message);
export const isValidGetAccounts = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Get_Accounts);
export const isValidGetNetVersion = (response: JsonRpcResponse) =>
isValidEthCall(response, schema.RpcNode)(API_NAME.Net_Version);
export const isValidTxHash = (hash: string) =>
hash.substring(0, 2) === '0x' && hash.length === 66 && isValidHex(hash);
export function isValidLabelLength(label: string, options: { allowEmpty?: boolean } = {}): boolean {
const meetsMinimumLengthRequirement = label.length >= 2;
const meetsMaximumLengthRequirement = label.length <= 50;
const labelOnlyContainsSpaces = !label.trim();
if (options.allowEmpty && label.length === 0) {
return true;
}
if (!options.allowEmpty && labelOnlyContainsSpaces) {
return false;
}
return meetsMinimumLengthRequirement && meetsMaximumLengthRequirement;
}
export function isLabelWithoutENS(label: string): boolean {
const ensTlds = ['.eth', '.test', '.reverse'];
for (const tld of ensTlds) {
if (label.includes(tld)) {
return false;
}
}
return true;
}
export function isValidAddressLabel(
address: string,
label: string,
addresses: { [address: string]: string },
labels: { [label: string]: string },
chainId: number
) {
const addressAlreadyExists = !!addresses[address.toLowerCase()];
const labelAlreadyExists = !!labels[label];
const result: { isValid: boolean; addressError?: string; labelError?: string } = {
isValid: true
};
if (!isValidAddress(address, chainId)) {
result.addressError = translateRaw('INVALID_ADDRESS');
}
if (addressAlreadyExists) {
result.addressError = translateRaw('ADDRESS_ALREADY_EXISTS');
}
if (!isValidLabelLength(label)) {
result.labelError = translateRaw('INVALID_LABEL_LENGTH');
}
if (!isLabelWithoutENS(label)) {
result.labelError = translateRaw('LABEL_CANNOT_CONTAIN_ENS_SUFFIX');
}
if (labelAlreadyExists) {
result.labelError = translateRaw('LABEL_ALREADY_EXISTS');
}
if (result.addressError || result.labelError) {
result.isValid = false;
}
return result;
}