mirror of
https://github.com/kremalicious/metamask-extension.git
synced 2024-12-23 09:52:26 +01:00
330 lines
11 KiB
JavaScript
330 lines
11 KiB
JavaScript
import { ethErrors } from 'eth-rpc-errors';
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import { addHexPrefix } from '../../../lib/util';
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import {
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TRANSACTION_ENVELOPE_TYPES,
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TRANSACTION_STATUSES,
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} from '../../../../../shared/constants/transaction';
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import { isEIP1559Transaction } from '../../../../../shared/modules/transaction.utils';
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import { isValidHexAddress } from '../../../../../shared/modules/hexstring-utils';
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const normalizers = {
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from: addHexPrefix,
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to: (to, lowerCase) =>
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lowerCase ? addHexPrefix(to).toLowerCase() : addHexPrefix(to),
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nonce: addHexPrefix,
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value: addHexPrefix,
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data: addHexPrefix,
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gas: addHexPrefix,
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gasPrice: addHexPrefix,
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maxFeePerGas: addHexPrefix,
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maxPriorityFeePerGas: addHexPrefix,
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type: addHexPrefix,
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estimateSuggested: (estimate) => estimate,
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estimateUsed: (estimate) => estimate,
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};
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export function normalizeAndValidateTxParams(txParams, lowerCase = true) {
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const normalizedTxParams = normalizeTxParams(txParams, lowerCase);
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validateTxParams(normalizedTxParams);
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return normalizedTxParams;
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}
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/**
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* Normalizes the given txParams
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*
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* @param {Object} txParams - The transaction params
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* @param {boolean} [lowerCase] - Whether to lowercase the 'to' address.
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* Default: true
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* @returns {Object} the normalized tx params
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*/
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export function normalizeTxParams(txParams, lowerCase = true) {
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// apply only keys in the normalizers
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const normalizedTxParams = {};
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for (const key in normalizers) {
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if (txParams[key]) {
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normalizedTxParams[key] = normalizers[key](txParams[key], lowerCase);
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}
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}
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return normalizedTxParams;
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}
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/**
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* Given two fields, ensure that the second field is not included in txParams,
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* and if it is throw an invalidParams error.
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*
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* @param {Object} txParams - the transaction parameters object
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* @param {string} fieldBeingValidated - the current field being validated
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* @param {string} mutuallyExclusiveField - the field to ensure is not provided
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* @throws {ethErrors.rpc.invalidParams} Throws if mutuallyExclusiveField is
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* present in txParams.
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*/
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function ensureMutuallyExclusiveFieldsNotProvided(
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txParams,
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fieldBeingValidated,
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mutuallyExclusiveField,
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) {
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if (typeof txParams[mutuallyExclusiveField] !== 'undefined') {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction params: specified ${fieldBeingValidated} but also included ${mutuallyExclusiveField}, these cannot be mixed`,
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);
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}
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}
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/**
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* Ensures that the provided value for field is a string, throws an
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* invalidParams error if field is not a string.
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*
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* @param {Object} txParams - the transaction parameters object
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* @param {string} field - the current field being validated
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* @throws {ethErrors.rpc.invalidParams} Throws if field is not a string
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*/
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function ensureFieldIsString(txParams, field) {
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if (typeof txParams[field] !== 'string') {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction params: ${field} is not a string. got: (${txParams[field]})`,
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);
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}
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}
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/**
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* Ensures that the provided txParams has the proper 'type' specified for the
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* given field, if it is provided. If types do not match throws an
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* invalidParams error.
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*
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* @param {Object} txParams - the transaction parameters object
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* @param {'gasPrice' | 'maxFeePerGas' | 'maxPriorityFeePerGas'} field - the
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* current field being validated
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* @throws {ethErrors.rpc.invalidParams} Throws if type does not match the
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* expectations for provided field.
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*/
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function ensureProperTransactionEnvelopeTypeProvided(txParams, field) {
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switch (field) {
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case 'maxFeePerGas':
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case 'maxPriorityFeePerGas':
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if (
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txParams.type &&
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txParams.type !== TRANSACTION_ENVELOPE_TYPES.FEE_MARKET
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) {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction envelope type: specified type "${txParams.type}" but including maxFeePerGas and maxPriorityFeePerGas requires type: "${TRANSACTION_ENVELOPE_TYPES.FEE_MARKET}"`,
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);
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}
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break;
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case 'gasPrice':
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default:
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if (
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txParams.type &&
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txParams.type === TRANSACTION_ENVELOPE_TYPES.FEE_MARKET
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) {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction envelope type: specified type "${txParams.type}" but included a gasPrice instead of maxFeePerGas and maxPriorityFeePerGas`,
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);
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}
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}
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}
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/**
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* Validates the given tx parameters
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*
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* @param {Object} txParams - the tx params
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* @param {boolean} eip1559Compatibility - whether or not the current network supports EIP-1559 transactions
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* @throws {Error} if the tx params contains invalid fields
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*/
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export function validateTxParams(txParams, eip1559Compatibility = true) {
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if (!txParams || typeof txParams !== 'object' || Array.isArray(txParams)) {
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throw ethErrors.rpc.invalidParams(
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'Invalid transaction params: must be an object.',
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);
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}
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if (!txParams.to && !txParams.data) {
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throw ethErrors.rpc.invalidParams(
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'Invalid transaction params: must specify "data" for contract deployments, or "to" (and optionally "data") for all other types of transactions.',
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);
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}
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if (isEIP1559Transaction({ txParams }) && !eip1559Compatibility) {
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throw ethErrors.rpc.invalidParams(
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'Invalid transaction params: params specify an EIP-1559 transaction but the current network does not support EIP-1559',
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);
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}
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Object.entries(txParams).forEach(([key, value]) => {
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// validate types
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switch (key) {
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case 'from':
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validateFrom(txParams);
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break;
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case 'to':
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validateRecipient(txParams);
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break;
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case 'gasPrice':
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ensureProperTransactionEnvelopeTypeProvided(txParams, 'gasPrice');
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ensureMutuallyExclusiveFieldsNotProvided(
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txParams,
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'gasPrice',
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'maxFeePerGas',
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);
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ensureMutuallyExclusiveFieldsNotProvided(
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txParams,
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'gasPrice',
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'maxPriorityFeePerGas',
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);
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ensureFieldIsString(txParams, 'gasPrice');
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break;
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case 'maxFeePerGas':
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ensureProperTransactionEnvelopeTypeProvided(txParams, 'maxFeePerGas');
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ensureMutuallyExclusiveFieldsNotProvided(
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txParams,
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'maxFeePerGas',
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'gasPrice',
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);
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ensureFieldIsString(txParams, 'maxFeePerGas');
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break;
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case 'maxPriorityFeePerGas':
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ensureProperTransactionEnvelopeTypeProvided(
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txParams,
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'maxPriorityFeePerGas',
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);
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ensureMutuallyExclusiveFieldsNotProvided(
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txParams,
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'maxPriorityFeePerGas',
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'gasPrice',
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);
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ensureFieldIsString(txParams, 'maxPriorityFeePerGas');
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break;
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case 'value':
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ensureFieldIsString(txParams, 'value');
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if (value.toString().includes('-')) {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction value "${value}": not a positive number.`,
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);
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}
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if (value.toString().includes('.')) {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction value of "${value}": number must be in wei.`,
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);
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}
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if (!value.match(/^0x[a-fA-F0-9]+$/u)) {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction value of "${value}": not a valid hex string.`,
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);
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}
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break;
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case 'chainId':
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if (typeof value !== 'number' && typeof value !== 'string') {
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throw ethErrors.rpc.invalidParams(
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`Invalid transaction params: ${key} is not a Number or hex string. got: (${value})`,
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);
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}
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break;
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default:
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ensureFieldIsString(txParams, key);
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}
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});
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}
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/**
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* Validates the {@code from} field in the given tx params
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*
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* @param {Object} txParams
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* @throws {Error} if the from address isn't valid
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*/
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export function validateFrom(txParams) {
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if (!(typeof txParams.from === 'string')) {
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throw ethErrors.rpc.invalidParams(
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`Invalid "from" address "${txParams.from}": not a string.`,
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);
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}
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if (!isValidHexAddress(txParams.from, { allowNonPrefixed: false })) {
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throw ethErrors.rpc.invalidParams('Invalid "from" address.');
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}
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}
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/**
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* Validates the {@code to} field in the given tx params
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*
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* @param {Object} txParams - the tx params
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* @returns {Object} the tx params
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* @throws {Error} if the recipient is invalid OR there isn't tx data
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*/
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export function validateRecipient(txParams) {
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if (txParams.to === '0x' || txParams.to === null) {
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if (txParams.data) {
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delete txParams.to;
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} else {
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throw ethErrors.rpc.invalidParams('Invalid "to" address.');
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}
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} else if (
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txParams.to !== undefined &&
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!isValidHexAddress(txParams.to, { allowNonPrefixed: false })
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) {
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throw ethErrors.rpc.invalidParams('Invalid "to" address.');
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}
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return txParams;
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}
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export const validateConfirmedExternalTransaction = ({
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txMeta,
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pendingTransactions,
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confirmedTransactions,
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} = {}) => {
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if (!txMeta || !txMeta.txParams) {
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throw ethErrors.rpc.invalidParams(
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'"txMeta" or "txMeta.txParams" is missing',
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);
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}
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if (txMeta.status !== TRANSACTION_STATUSES.CONFIRMED) {
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throw ethErrors.rpc.invalidParams(
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'External transaction status should be "confirmed"',
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);
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}
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const externalTxNonce = txMeta.txParams.nonce;
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if (pendingTransactions && pendingTransactions.length > 0) {
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const foundPendingTxByNonce = pendingTransactions.find(
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(el) => el.txParams?.nonce === externalTxNonce,
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);
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if (foundPendingTxByNonce) {
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throw ethErrors.rpc.invalidParams(
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'External transaction nonce should not be in pending txs',
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);
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}
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}
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if (confirmedTransactions && confirmedTransactions.length > 0) {
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const foundConfirmedTxByNonce = confirmedTransactions.find(
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(el) => el.txParams?.nonce === externalTxNonce,
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);
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if (foundConfirmedTxByNonce) {
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throw ethErrors.rpc.invalidParams(
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'External transaction nonce should not be in confirmed txs',
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);
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}
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}
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};
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/**
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* Returns a list of final states
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*
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* @returns {string[]} the states that can be considered final states
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*/
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export function getFinalStates() {
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return [
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TRANSACTION_STATUSES.REJECTED, // the user has responded no!
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TRANSACTION_STATUSES.CONFIRMED, // the tx has been included in a block.
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TRANSACTION_STATUSES.FAILED, // the tx failed for some reason, included on tx data.
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TRANSACTION_STATUSES.DROPPED, // the tx nonce was already used
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];
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}
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/**
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* Normalizes tx receipt gas used to be a hexadecimal string.
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* It seems that sometimes the numerical values being returned from
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* this.query.getTransactionReceipt are BN instances and not strings.
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*
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* @param {string or BN instance} gasUsed
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* @returns normalized gas used as hexadecimal string
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*/
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export function normalizeTxReceiptGasUsed(gasUsed) {
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return typeof gasUsed === 'string' ? gasUsed : gasUsed.toString(16);
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}
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