98 lines
3.5 KiB
JavaScript
98 lines
3.5 KiB
JavaScript
"use strict";
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import { defineReadOnly } from "@ethersproject/properties";
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import { Logger } from "@ethersproject/logger";
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import { version } from "./_version";
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const logger = new Logger(version);
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import { JsonRpcProvider } from "./json-rpc-provider";
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let _nextId = 1;
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function buildWeb3LegacyFetcher(provider, sendFunc) {
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return function (method, params) {
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// Metamask complains about eth_sign (and on some versions hangs)
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if (method == "eth_sign" && provider.isMetaMask) {
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// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign
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method = "personal_sign";
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params = [params[1], params[0]];
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}
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const request = {
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method: method,
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params: params,
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id: (_nextId++),
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jsonrpc: "2.0"
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};
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return new Promise((resolve, reject) => {
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sendFunc(request, function (error, result) {
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if (error) {
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return reject(error);
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}
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if (result.error) {
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const error = new Error(result.error.message);
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error.code = result.error.code;
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error.data = result.error.data;
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return reject(error);
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}
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resolve(result.result);
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});
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});
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};
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}
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function buildEip1193Fetcher(provider) {
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return function (method, params) {
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if (params == null) {
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params = [];
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}
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// Metamask complains about eth_sign (and on some versions hangs)
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if (method == "eth_sign" && provider.isMetaMask) {
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// https://github.com/ethereum/go-ethereum/wiki/Management-APIs#personal_sign
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method = "personal_sign";
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params = [params[1], params[0]];
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}
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return provider.request({ method, params });
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};
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}
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export class Web3Provider extends JsonRpcProvider {
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constructor(provider, network) {
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logger.checkNew(new.target, Web3Provider);
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if (provider == null) {
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logger.throwArgumentError("missing provider", "provider", provider);
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}
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let path = null;
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let jsonRpcFetchFunc = null;
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let subprovider = null;
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if (typeof (provider) === "function") {
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path = "unknown:";
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jsonRpcFetchFunc = provider;
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}
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else {
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path = provider.host || provider.path || "";
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if (!path && provider.isMetaMask) {
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path = "metamask";
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}
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subprovider = provider;
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if (provider.request) {
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if (path === "") {
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path = "eip-1193:";
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}
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jsonRpcFetchFunc = buildEip1193Fetcher(provider);
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}
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else if (provider.sendAsync) {
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jsonRpcFetchFunc = buildWeb3LegacyFetcher(provider, provider.sendAsync.bind(provider));
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}
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else if (provider.send) {
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jsonRpcFetchFunc = buildWeb3LegacyFetcher(provider, provider.send.bind(provider));
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}
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else {
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logger.throwArgumentError("unsupported provider", "provider", provider);
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}
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if (!path) {
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path = "unknown:";
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}
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}
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super(path, network);
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defineReadOnly(this, "jsonRpcFetchFunc", jsonRpcFetchFunc);
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defineReadOnly(this, "provider", subprovider);
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}
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send(method, params) {
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return this.jsonRpcFetchFunc(method, params);
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}
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}
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