json-rpc-provider.js

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { Signer } from "@ethersproject/abstract-signer";
import { BigNumber } from "@ethersproject/bignumber";
import { hexlify, hexValue } from "@ethersproject/bytes";
import { checkProperties, deepCopy, defineReadOnly, getStatic, resolveProperties, shallowCopy } from "@ethersproject/properties";
import { toUtf8Bytes } from "@ethersproject/strings";
import { fetchJson, poll } from "@ethersproject/web";
import { Logger } from "@ethersproject/logger";
import { version } from "./_version";
const logger = new Logger(version);
import { BaseProvider } from "./base-provider";
function timer(timeout) {
    return new Promise(function (resolve) {
        setTimeout(function () {
            resolve();
        }, timeout);
    });
}
function getResult(payload) {
    if (payload.error) {
        // @TODO: not any
        let error = new Error(payload.error.message);
        error.code = payload.error.code;
        error.data = payload.error.data;
        throw error;
    }
    return payload.result;
}
function getLowerCase(value) {
    if (value) {
        return value.toLowerCase();
    }
    return value;
}
const _constructorGuard = {};
export class JsonRpcSigner extends Signer {
    constructor(constructorGuard, provider, addressOrIndex) {
        logger.checkNew(new.target, JsonRpcSigner);
        super();
        if (constructorGuard !== _constructorGuard) {
            throw new Error("do not call the JsonRpcSigner constructor directly; use provider.getSigner");
        }
        defineReadOnly(this, "provider", provider);
        if (addressOrIndex == null) {
            addressOrIndex = 0;
        }
        if (typeof (addressOrIndex) === "string") {
            defineReadOnly(this, "_address", this.provider.formatter.address(addressOrIndex));
            defineReadOnly(this, "_index", null);
        }
        else if (typeof (addressOrIndex) === "number") {
            defineReadOnly(this, "_index", addressOrIndex);
            defineReadOnly(this, "_address", null);
        }
        else {
            logger.throwArgumentError("invalid address or index", "addressOrIndex", addressOrIndex);
        }
    }
    connect(provider) {
        return logger.throwError("cannot alter JSON-RPC Signer connection", Logger.errors.UNSUPPORTED_OPERATION, {
            operation: "connect"
        });
    }
    connectUnchecked() {
        return new UncheckedJsonRpcSigner(_constructorGuard, this.provider, this._address || this._index);
    }
    getAddress() {
        if (this._address) {
            return Promise.resolve(this._address);
        }
        return this.provider.send("eth_accounts", []).then((accounts) => {
            if (accounts.length <= this._index) {
                logger.throwError("unknown account #" + this._index, Logger.errors.UNSUPPORTED_OPERATION, {
                    operation: "getAddress"
                });
            }
            return this.provider.formatter.address(accounts[this._index]);
        });
    }
    sendUncheckedTransaction(transaction) {
        transaction = shallowCopy(transaction);
        let fromAddress = this.getAddress().then((address) => {
            if (address) {
                address = address.toLowerCase();
            }
            return address;
        });
        // The JSON-RPC for eth_sendTransaction uses 90000 gas; if the user
        // wishes to use this, it is easy to specify explicitly, otherwise
        // we look it up for them.
        if (transaction.gasLimit == null) {
            let estimate = shallowCopy(transaction);
            estimate.from = fromAddress;
            transaction.gasLimit = this.provider.estimateGas(estimate);
        }
        return Promise.all([
            resolveProperties(transaction),
            fromAddress
        ]).then((results) => {
            let tx = results[0];
            let hexTx = this.provider.constructor.hexlifyTransaction(tx);
            hexTx.from = results[1];
            return this.provider.send("eth_sendTransaction", [hexTx]).then((hash) => {
                return hash;
            }, (error) => {
                if (error.responseText) {
                    // See: JsonRpcProvider.sendTransaction (@TODO: Expose a ._throwError??)
                    if (error.responseText.indexOf("insufficient funds") >= 0) {
                        logger.throwError("insufficient funds", Logger.errors.INSUFFICIENT_FUNDS, {
                            transaction: tx
                        });
                    }
                    if (error.responseText.indexOf("nonce too low") >= 0) {
                        logger.throwError("nonce has already been used", Logger.errors.NONCE_EXPIRED, {
                            transaction: tx
                        });
                    }
                    if (error.responseText.indexOf("replacement transaction underpriced") >= 0) {
                        logger.throwError("replacement fee too low", Logger.errors.REPLACEMENT_UNDERPRICED, {
                            transaction: tx
                        });
                    }
                }
                throw error;
            });
        });
    }
    signTransaction(transaction) {
        return logger.throwError("signing transactions is unsupported", Logger.errors.UNSUPPORTED_OPERATION, {
            operation: "signTransaction"
        });
    }
    sendTransaction(transaction) {
        return this.sendUncheckedTransaction(transaction).then((hash) => {
            return poll(() => {
                return this.provider.getTransaction(hash).then((tx) => {
                    if (tx === null) {
                        return undefined;
                    }
                    return this.provider._wrapTransaction(tx, hash);
                });
            }, { onceBlock: this.provider }).catch((error) => {
                error.transactionHash = hash;
                throw error;
            });
        });
    }
    signMessage(message) {
        let data = ((typeof (message) === "string") ? toUtf8Bytes(message) : message);
        return this.getAddress().then((address) => {
            // https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign
            return this.provider.send("eth_sign", [address.toLowerCase(), hexlify(data)]);
        });
    }
    unlock(password) {
        let provider = this.provider;
        return this.getAddress().then(function (address) {
            return provider.send("personal_unlockAccount", [address.toLowerCase(), password, null]);
        });
    }
}
class UncheckedJsonRpcSigner extends JsonRpcSigner {
    sendTransaction(transaction) {
        return this.sendUncheckedTransaction(transaction).then((hash) => {
            return {
                hash: hash,
                nonce: null,
                gasLimit: null,
                gasPrice: null,
                data: null,
                value: null,
                chainId: null,
                confirmations: 0,
                from: null,
                wait: (confirmations) => { return this.provider.waitForTransaction(hash, confirmations); }
            };
        });
    }
}
const allowedTransactionKeys = {
    chainId: true, data: true, gasLimit: true, gasPrice: true, nonce: true, to: true, value: true
};
export class JsonRpcProvider extends BaseProvider {
    constructor(url, network) {
        logger.checkNew(new.target, JsonRpcProvider);
        const getNetwork = getStatic((new.target), "getNetwork");
        // One parameter, but it is a network name, so swap it with the URL
        if (typeof (url) === "string") {
            if (network === null) {
                const checkNetwork = getNetwork(url);
                network = checkNetwork;
                url = null;
            }
        }
        if (network) {
            // The network has been specified explicitly, we can use it
            super(network);
        }
        else {
            // The network is unknown, query the JSON-RPC for it
            const ready = new Promise((resolve, reject) => {
                setTimeout(() => __awaiter(this, void 0, void 0, function* () {
                    let chainId = null;
                    try {
                        chainId = yield this.send("eth_chainId", []);
                    }
                    catch (error) {
                        try {
                            chainId = yield this.send("net_version", []);
                        }
                        catch (error) { }
                    }
                    if (chainId != null) {
                        try {
                            return resolve(getNetwork(BigNumber.from(chainId).toNumber()));
                        }
                        catch (error) {
                            console.log("e3", error);
                        }
                    }
                    reject(logger.makeError("could not detect network", Logger.errors.NETWORK_ERROR));
                }), 0);
            });
            super(ready);
        }
        // Default URL
        if (!url) {
            url = "http:/" + "/localhost:8545";
        }
        if (typeof (url) === "string") {
            this.connection = Object.freeze({
                url: url
            });
        }
        else {
            this.connection = Object.freeze(shallowCopy(url));
        }
        this._nextId = 42;
    }
    getSigner(addressOrIndex) {
        return new JsonRpcSigner(_constructorGuard, this, addressOrIndex);
    }
    getUncheckedSigner(addressOrIndex) {
        return this.getSigner(addressOrIndex).connectUnchecked();
    }
    listAccounts() {
        return this.send("eth_accounts", []).then((accounts) => {
            return accounts.map((a) => this.formatter.address(a));
        });
    }
    send(method, params) {
        let request = {
            method: method,
            params: params,
            id: (this._nextId++),
            jsonrpc: "2.0"
        };
        this.emit("debug", {
            action: "request",
            request: deepCopy(request),
            provider: this
        });
        return fetchJson(this.connection, JSON.stringify(request), getResult).then((result) => {
            this.emit("debug", {
                action: "response",
                request: request,
                response: result,
                provider: this
            });
            return result;
        });
    }
    perform(method, params) {
        switch (method) {
            case "getBlockNumber":
                return this.send("eth_blockNumber", []);
            case "getGasPrice":
                return this.send("eth_gasPrice", []);
            case "getBalance":
                return this.send("eth_getBalance", [getLowerCase(params.address), params.blockTag]);
            case "getTransactionCount":
                return this.send("eth_getTransactionCount", [getLowerCase(params.address), params.blockTag]);
            case "getCode":
                return this.send("eth_getCode", [getLowerCase(params.address), params.blockTag]);
            case "getStorageAt":
                return this.send("eth_getStorageAt", [getLowerCase(params.address), params.position, params.blockTag]);
            case "sendTransaction":
                return this.send("eth_sendRawTransaction", [params.signedTransaction]).catch((error) => {
                    if (error.responseText) {
                        // "insufficient funds for gas * price + value"
                        if (error.responseText.indexOf("insufficient funds") > 0) {
                            logger.throwError("insufficient funds", Logger.errors.INSUFFICIENT_FUNDS, {});
                        }
                        // "nonce too low"
                        if (error.responseText.indexOf("nonce too low") > 0) {
                            logger.throwError("nonce has already been used", Logger.errors.NONCE_EXPIRED, {});
                        }
                        // "replacement transaction underpriced"
                        if (error.responseText.indexOf("replacement transaction underpriced") > 0) {
                            logger.throwError("replacement fee too low", Logger.errors.REPLACEMENT_UNDERPRICED, {});
                        }
                    }
                    throw error;
                });
            case "getBlock":
                if (params.blockTag) {
                    return this.send("eth_getBlockByNumber", [params.blockTag, !!params.includeTransactions]);
                }
                else if (params.blockHash) {
                    return this.send("eth_getBlockByHash", [params.blockHash, !!params.includeTransactions]);
                }
                return logger.throwArgumentError("invalid block tag or block hash", "params", params);
            case "getTransaction":
                return this.send("eth_getTransactionByHash", [params.transactionHash]);
            case "getTransactionReceipt":
                return this.send("eth_getTransactionReceipt", [params.transactionHash]);
            case "call": {
                const hexlifyTransaction = getStatic(this.constructor, "hexlifyTransaction");
                return this.send("eth_call", [hexlifyTransaction(params.transaction, { from: true }), params.blockTag]);
            }
            case "estimateGas": {
                const hexlifyTransaction = getStatic(this.constructor, "hexlifyTransaction");
                return this.send("eth_estimateGas", [hexlifyTransaction(params.transaction, { from: true })]);
            }
            case "getLogs":
                if (params.filter && params.filter.address != null) {
                    params.filter.address = getLowerCase(params.filter.address);
                }
                return this.send("eth_getLogs", [params.filter]);
            default:
                break;
        }
        return logger.throwError(method + " not implemented", Logger.errors.NOT_IMPLEMENTED, { operation: method });
    }
    _startPending() {
        if (this._pendingFilter != null) {
            return;
        }
        let self = this;
        let pendingFilter = this.send("eth_newPendingTransactionFilter", []);
        this._pendingFilter = pendingFilter;
        pendingFilter.then(function (filterId) {
            function poll() {
                self.send("eth_getFilterChanges", [filterId]).then(function (hashes) {
                    if (self._pendingFilter != pendingFilter) {
                        return null;
                    }
                    let seq = Promise.resolve();
                    hashes.forEach(function (hash) {
                        // @TODO: This should be garbage collected at some point... How? When?
                        self._emitted["t:" + hash.toLowerCase()] = "pending";
                        seq = seq.then(function () {
                            return self.getTransaction(hash).then(function (tx) {
                                self.emit("pending", tx);
                                return null;
                            });
                        });
                    });
                    return seq.then(function () {
                        return timer(1000);
                    });
                }).then(function () {
                    if (self._pendingFilter != pendingFilter) {
                        self.send("eth_uninstallFilter", [filterId]);
                        return;
                    }
                    setTimeout(function () { poll(); }, 0);
                    return null;
                }).catch((error) => { });
            }
            poll();
            return filterId;
        }).catch((error) => { });
    }
    _stopPending() {
        this._pendingFilter = null;
    }
    // Convert an ethers.js transaction into a JSON-RPC transaction
    //  - gasLimit => gas
    //  - All values hexlified
    //  - All numeric values zero-striped
    // NOTE: This allows a TransactionRequest, but all values should be resolved
    //       before this is called
    static hexlifyTransaction(transaction, allowExtra) {
        // Check only allowed properties are given
        const allowed = shallowCopy(allowedTransactionKeys);
        if (allowExtra) {
            for (let key in allowExtra) {
                if (allowExtra[key]) {
                    allowed[key] = true;
                }
            }
        }
        checkProperties(transaction, allowed);
        const result = {};
        // Some nodes (INFURA ropsten; INFURA mainnet is fine) do not like leading zeros.
        ["gasLimit", "gasPrice", "nonce", "value"].forEach(function (key) {
            if (transaction[key] == null) {
                return;
            }
            const value = hexValue(transaction[key]);
            if (key === "gasLimit") {
                key = "gas";
            }
            result[key] = value;
        });
        ["from", "to", "data"].forEach(function (key) {
            if (transaction[key] == null) {
                return;
            }
            result[key] = hexlify(transaction[key]);
        });
        return result;
    }
}