516 lines
19 KiB
TypeScript
516 lines
19 KiB
TypeScript
import { getBuiltinCallException } from "../abi/index.js";
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import { accessListify } from "../transaction/index.js";
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import {
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defineProperties,
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hexlify, toQuantity,
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FetchRequest,
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assert, assertArgument,
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toUtf8String
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} from "../utils/index.js";
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import { AbstractProvider } from "./abstract-provider.js";
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import { Network } from "./network.js";
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import { NetworkPlugin } from "./plugins-network.js";
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import { showThrottleMessage } from "./community.js";
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import { PerformActionRequest } from "./abstract-provider.js";
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import type { Networkish } from "./network.js";
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//import type { } from "./pagination";
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import type { TransactionRequest } from "./provider.js";
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const THROTTLE = 2000;
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export type DebugEventEtherscanProvider = {
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action: "sendRequest",
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id: number,
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url: string,
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payload: Record<string, any>
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} | {
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action: "receiveRequest",
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id: number,
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result: any
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} | {
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action: "receiveError",
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id: number,
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error: any
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};
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const EtherscanPluginId = "org.ethers.plugins.Etherscan";
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export class EtherscanPlugin extends NetworkPlugin {
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readonly baseUrl!: string;
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readonly communityApiKey!: string;
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constructor(baseUrl: string, communityApiKey: string) {
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super(EtherscanPluginId);
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//if (communityApiKey == null) { communityApiKey = null; }
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defineProperties<EtherscanPlugin>(this, { baseUrl, communityApiKey });
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}
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clone(): EtherscanPlugin {
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return new EtherscanPlugin(this.baseUrl, this.communityApiKey);
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}
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}
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let nextId = 1;
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export class BaseEtherscanProvider extends AbstractProvider {
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readonly network!: Network;
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readonly apiKey!: string;
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readonly #plugin: null | EtherscanPlugin;
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constructor(_network?: Networkish, apiKey?: string) {
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super();
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const network = Network.from(_network);
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this.#plugin = network.getPlugin<EtherscanPlugin>(EtherscanPluginId);
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if (apiKey == null && this.#plugin) {
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apiKey = this.#plugin.communityApiKey;
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}
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defineProperties<BaseEtherscanProvider>(this, { apiKey, network });
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// Test that the network is supported by Etherscan
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this.getBaseUrl();
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}
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getBaseUrl(): string {
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if (this.#plugin) { return this.#plugin.baseUrl; }
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switch(this.network.name) {
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case "mainnet":
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return "https:/\/api.etherscan.io";
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case "goerli":
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return "https:/\/api-goerli.etherscan.io";
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case "sepolia":
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return "https:/\/api-sepolia.etherscan.io";
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case "arbitrum":
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return "https:/\/api.arbiscan.io";
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case "arbitrum-goerli":
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return "https:/\/api-goerli.arbiscan.io";
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case "matic":
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return "https:/\/api.polygonscan.com";
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case "maticmum":
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return "https:/\/api-testnet.polygonscan.com";
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case "optimism":
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return "https:/\/api-optimistic.etherscan.io";
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case "optimism-goerli":
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return "https:/\/api-goerli-optimistic.etherscan.io";
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default:
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}
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assertArgument(false, "unsupported network", "network", this.network);
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}
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getUrl(module: string, params: Record<string, string>): string {
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const query = Object.keys(params).reduce((accum, key) => {
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const value = params[key];
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if (value != null) {
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accum += `&${ key }=${ value }`
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}
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return accum
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}, "");
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const apiKey = ((this.apiKey) ? `&apikey=${ this.apiKey }`: "");
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return `${ this.getBaseUrl() }/api?module=${ module }${ query }${ apiKey }`;
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}
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getPostUrl(): string {
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return `${ this.getBaseUrl() }/api`;
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}
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getPostData(module: string, params: Record<string, any>): Record<string, any> {
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params.module = module;
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params.apikey = this.apiKey;
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return params;
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}
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async detectNetwork(): Promise<Network> {
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return this.network;
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}
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async fetch(module: string, params: Record<string, any>, post?: boolean): Promise<any> {
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const id = nextId++;
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const url = (post ? this.getPostUrl(): this.getUrl(module, params));
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const payload = (post ? this.getPostData(module, params): null);
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this.emit("debug", { action: "sendRequest", id, url, payload: payload });
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const request = new FetchRequest(url);
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request.setThrottleParams({ slotInterval: 1000 });
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request.retryFunc = (req, resp, attempt: number) => {
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if (this.isCommunityResource()) {
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showThrottleMessage("Etherscan");
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}
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return Promise.resolve(true);
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};
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request.processFunc = async (request, response) => {
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const result = response.hasBody() ? JSON.parse(toUtf8String(response.body)): { };
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const throttle = ((typeof(result.result) === "string") ? result.result: "").toLowerCase().indexOf("rate limit") >= 0;
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if (module === "proxy") {
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// This JSON response indicates we are being throttled
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if (result && result.status == 0 && result.message == "NOTOK" && throttle) {
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this.emit("debug", { action: "receiveError", id, reason: "proxy-NOTOK", error: result });
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response.throwThrottleError(result.result, THROTTLE);
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}
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} else {
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if (throttle) {
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this.emit("debug", { action: "receiveError", id, reason: "null result", error: result.result });
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response.throwThrottleError(result.result, THROTTLE);
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}
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}
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return response;
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};
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if (payload) {
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request.setHeader("content-type", "application/x-www-form-urlencoded; charset=UTF-8");
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request.body = Object.keys(payload).map((k) => `${ k }=${ payload[k] }`).join("&");
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}
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const response = await request.send();
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try {
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response.assertOk();
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} catch (error) {
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this.emit("debug", { action: "receiveError", id, error, reason: "assertOk" });
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}
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if (!response.hasBody()) {
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this.emit("debug", { action: "receiveError", id, error: "missing body", reason: "null body" });
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throw new Error();
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}
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const result = JSON.parse(toUtf8String(response.body));
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if (module === "proxy") {
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if (result.jsonrpc != "2.0") {
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this.emit("debug", { action: "receiveError", id, result, reason: "invalid JSON-RPC" });
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const error: any = new Error("invalid response");
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error.result = JSON.stringify(result);
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throw error;
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}
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if (result.error) {
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this.emit("debug", { action: "receiveError", id, result, reason: "JSON-RPC error" });
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const error: any = new Error(result.error.message || "unknown error");
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if (result.error.code) { error.code = result.error.code; }
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if (result.error.data) { error.data = result.error.data; }
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throw error;
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}
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this.emit("debug", { action: "receiveRequest", id, result });
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return result.result;
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} else {
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// getLogs, getHistory have weird success responses
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if (result.status == 0 && (result.message === "No records found" || result.message === "No transactions found")) {
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this.emit("debug", { action: "receiveRequest", id, result });
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return result.result;
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}
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if (result.status != 1 || (typeof(result.message) === "string" && !result.message.match(/^OK/))) {
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this.emit("debug", { action: "receiveError", id, result });
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const error: any = new Error("invalid response");
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error.result = JSON.stringify(result);
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// if ((result.result || "").toLowerCase().indexOf("rate limit") >= 0) {
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// error.throttleRetry = true;
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// }
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throw error;
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}
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this.emit("debug", { action: "receiveRequest", id, result });
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return result.result;
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}
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}
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// The transaction has already been sanitized by the calls in Provider
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_getTransactionPostData(transaction: TransactionRequest): Record<string, string> {
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const result: Record<string, string> = { };
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for (let key in transaction) {
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if ((<any>transaction)[key] == null) { continue; }
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let value = (<any>transaction)[key];
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if (key === "type" && value === 0) { continue; }
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// Quantity-types require no leading zero, unless 0
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if ((<any>{ type: true, gasLimit: true, gasPrice: true, maxFeePerGs: true, maxPriorityFeePerGas: true, nonce: true, value: true })[key]) {
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value = toQuantity(value);
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} else if (key === "accessList") {
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value = "[" + accessListify(value).map((set) => {
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return `{address:"${ set.address }",storageKeys:["${ set.storageKeys.join('","') }"]}`;
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}).join(",") + "]";
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} else {
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value = hexlify(value);
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}
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result[key] = value;
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}
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return result;
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}
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_checkError(req: PerformActionRequest, error: Error, transaction: any): never {
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if (req.method === "call" || req.method === "estimateGas") {
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if (error.message.match(/execution reverted/i)) {
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const e = getBuiltinCallException(req.method, <any>req.transaction, (<any>error).data);
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e.info = { request: req, error }
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throw e;
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}
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}
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/*
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let body = "";
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if (isError(error, Logger.Errors.SERVER_ERROR) && error.response && error.response.hasBody()) {
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body = toUtf8String(error.response.body);
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}
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console.log(body);
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// Undo the "convenience" some nodes are attempting to prevent backwards
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// incompatibility; maybe for v6 consider forwarding reverts as errors
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if (method === "call" && body) {
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// Etherscan keeps changing their string
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if (body.match(/reverted/i) || body.match(/VM execution error/i)) {
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// Etherscan prefixes the data like "Reverted 0x1234"
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let data = e.data;
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if (data) { data = "0x" + data.replace(/^.*0x/i, ""); }
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if (!isHexString(data)) { data = "0x"; }
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logger.throwError("call exception", Logger.Errors.CALL_EXCEPTION, {
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error, data
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});
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}
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}
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// Get the message from any nested error structure
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let message = error.message;
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if (isError(error, Logger.Errors.SERVER_ERROR)) {
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if (error.error && typeof(error.error.message) === "string") {
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message = error.error.message;
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} else if (typeof(error.body) === "string") {
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message = error.body;
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} else if (typeof(error.responseText) === "string") {
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message = error.responseText;
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}
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}
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message = (message || "").toLowerCase();
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// "Insufficient funds. The account you tried to send transaction from
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// does not have enough funds. Required 21464000000000 and got: 0"
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if (message.match(/insufficient funds/)) {
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logger.throwError("insufficient funds for intrinsic transaction cost", Logger.Errors.INSUFFICIENT_FUNDS, {
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error, transaction, info: { method }
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});
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}
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// "Transaction with the same hash was already imported."
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if (message.match(/same hash was already imported|transaction nonce is too low|nonce too low/)) {
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logger.throwError("nonce has already been used", Logger.Errors.NONCE_EXPIRED, {
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error, transaction, info: { method }
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});
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}
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// "Transaction gas price is too low. There is another transaction with
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// same nonce in the queue. Try increasing the gas price or incrementing the nonce."
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if (message.match(/another transaction with same nonce/)) {
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logger.throwError("replacement fee too low", Logger.Errors.REPLACEMENT_UNDERPRICED, {
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error, transaction, info: { method }
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});
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}
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if (message.match(/execution failed due to an exception|execution reverted/)) {
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logger.throwError("cannot estimate gas; transaction may fail or may require manual gas limit", Logger.Errors.UNPREDICTABLE_GAS_LIMIT, {
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error, transaction, info: { method }
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});
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}
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*/
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throw error;
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}
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async _detectNetwork(): Promise<Network> {
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return this.network;
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}
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async _perform(req: PerformActionRequest): Promise<any> {
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switch (req.method) {
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case "chainId":
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return this.network.chainId;
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case "getBlockNumber":
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return this.fetch("proxy", { action: "eth_blockNumber" });
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case "getGasPrice":
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return this.fetch("proxy", { action: "eth_gasPrice" });
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case "getBalance":
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// Returns base-10 result
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return this.fetch("account", {
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action: "balance",
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address: req.address,
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tag: req.blockTag
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});
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case "getTransactionCount":
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return this.fetch("proxy", {
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action: "eth_getTransactionCount",
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address: req.address,
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tag: req.blockTag
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});
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case "getCode":
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return this.fetch("proxy", {
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action: "eth_getCode",
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address: req.address,
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tag: req.blockTag
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});
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case "getStorage":
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return this.fetch("proxy", {
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action: "eth_getStorageAt",
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address: req.address,
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position: req.position,
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tag: req.blockTag
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});
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case "broadcastTransaction":
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return this.fetch("proxy", {
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action: "eth_sendRawTransaction",
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hex: req.signedTransaction
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}, true).catch((error) => {
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return this._checkError(req, <Error>error, req.signedTransaction);
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});
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case "getBlock":
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if ("blockTag" in req) {
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return this.fetch("proxy", {
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action: "eth_getBlockByNumber",
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tag: req.blockTag,
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boolean: (req.includeTransactions ? "true": "false")
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});
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}
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assert(false, "getBlock by blockHash not supported by Etherscan", "UNSUPPORTED_OPERATION", {
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operation: "getBlock(blockHash)"
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});
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case "getTransaction":
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return this.fetch("proxy", {
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action: "eth_getTransactionByHash",
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txhash: req.hash
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});
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case "getTransactionReceipt":
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return this.fetch("proxy", {
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action: "eth_getTransactionReceipt",
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txhash: req.hash
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});
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case "call": {
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if (req.blockTag !== "latest") {
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throw new Error("EtherscanProvider does not support blockTag for call");
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}
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const postData = this._getTransactionPostData(req.transaction);
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postData.module = "proxy";
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postData.action = "eth_call";
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try {
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return await this.fetch("proxy", postData, true);
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} catch (error) {
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return this._checkError(req, <Error>error, req.transaction);
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}
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}
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case "estimateGas": {
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const postData = this._getTransactionPostData(req.transaction);
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postData.module = "proxy";
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postData.action = "eth_estimateGas";
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try {
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return await this.fetch("proxy", postData, true);
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} catch (error) {
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return this._checkError(req, <Error>error, req.transaction);
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}
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}
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/*
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case "getLogs": {
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// Needs to complain if more than one address is passed in
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const args: Record<string, any> = { action: "getLogs" }
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if (params.filter.fromBlock) {
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args.fromBlock = checkLogTag(params.filter.fromBlock);
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}
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if (params.filter.toBlock) {
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args.toBlock = checkLogTag(params.filter.toBlock);
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}
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if (params.filter.address) {
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args.address = params.filter.address;
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}
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// @TODO: We can handle slightly more complicated logs using the logs API
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if (params.filter.topics && params.filter.topics.length > 0) {
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if (params.filter.topics.length > 1) {
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logger.throwError("unsupported topic count", Logger.Errors.UNSUPPORTED_OPERATION, { topics: params.filter.topics });
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}
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if (params.filter.topics.length === 1) {
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const topic0 = params.filter.topics[0];
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if (typeof(topic0) !== "string" || topic0.length !== 66) {
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logger.throwError("unsupported topic format", Logger.Errors.UNSUPPORTED_OPERATION, { topic0: topic0 });
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}
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args.topic0 = topic0;
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}
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}
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const logs: Array<any> = await this.fetch("logs", args);
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// Cache txHash => blockHash
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let blocks: { [tag: string]: string } = {};
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// Add any missing blockHash to the logs
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for (let i = 0; i < logs.length; i++) {
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const log = logs[i];
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if (log.blockHash != null) { continue; }
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if (blocks[log.blockNumber] == null) {
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const block = await this.getBlock(log.blockNumber);
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if (block) {
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blocks[log.blockNumber] = block.hash;
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}
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}
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log.blockHash = blocks[log.blockNumber];
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}
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return logs;
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}
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*/
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default:
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break;
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}
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return super._perform(req);
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}
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async getNetwork(): Promise<Network> {
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return this.network;
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}
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async getEtherPrice(): Promise<number> {
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if (this.network.name !== "mainnet") { return 0.0; }
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return parseFloat((await this.fetch("stats", { action: "ethprice" })).ethusd);
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}
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isCommunityResource(): boolean {
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const plugin = this.network.getPlugin<EtherscanPlugin>(EtherscanPluginId);
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if (plugin) { return (plugin.communityApiKey === this.apiKey); }
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return (this.apiKey == null);
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}
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}
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