700 lines
22 KiB
JavaScript
700 lines
22 KiB
JavaScript
import { getAddress } from "../address/index.js";
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import { keccak256, Signature, SigningKey } from "../crypto/index.js";
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import { concat, decodeRlp, encodeRlp, getBytes, getBigInt, getNumber, hexlify, assert, assertArgument, toBeArray, zeroPadValue } from "../utils/index.js";
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import { accessListify } from "./accesslist.js";
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import { recoverAddress } from "./address.js";
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const BN_0 = BigInt(0);
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const BN_2 = BigInt(2);
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const BN_27 = BigInt(27);
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const BN_28 = BigInt(28);
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const BN_35 = BigInt(35);
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const BN_MAX_UINT = BigInt("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
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function handleAddress(value) {
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if (value === "0x") {
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return null;
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}
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return getAddress(value);
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}
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function handleAccessList(value, param) {
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try {
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return accessListify(value);
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}
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catch (error) {
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assertArgument(false, error.message, param, value);
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}
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}
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function handleNumber(_value, param) {
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if (_value === "0x") {
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return 0;
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}
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return getNumber(_value, param);
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}
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function handleUint(_value, param) {
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if (_value === "0x") {
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return BN_0;
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}
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const value = getBigInt(_value, param);
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assertArgument(value <= BN_MAX_UINT, "value exceeds uint size", param, value);
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return value;
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}
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function formatNumber(_value, name) {
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const value = getBigInt(_value, "value");
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const result = toBeArray(value);
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assertArgument(result.length <= 32, `value too large`, `tx.${name}`, value);
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return result;
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}
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function formatAccessList(value) {
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return accessListify(value).map((set) => [set.address, set.storageKeys]);
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}
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function _parseLegacy(data) {
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const fields = decodeRlp(data);
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assertArgument(Array.isArray(fields) && (fields.length === 9 || fields.length === 6), "invalid field count for legacy transaction", "data", data);
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const tx = {
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type: 0,
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nonce: handleNumber(fields[0], "nonce"),
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gasPrice: handleUint(fields[1], "gasPrice"),
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gasLimit: handleUint(fields[2], "gasLimit"),
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to: handleAddress(fields[3]),
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value: handleUint(fields[4], "value"),
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data: hexlify(fields[5]),
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chainId: BN_0
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};
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// Legacy unsigned transaction
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if (fields.length === 6) {
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return tx;
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}
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const v = handleUint(fields[6], "v");
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const r = handleUint(fields[7], "r");
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const s = handleUint(fields[8], "s");
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if (r === BN_0 && s === BN_0) {
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// EIP-155 unsigned transaction
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tx.chainId = v;
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}
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else {
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// Compute the EIP-155 chain ID (or 0 for legacy)
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let chainId = (v - BN_35) / BN_2;
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if (chainId < BN_0) {
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chainId = BN_0;
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}
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tx.chainId = chainId;
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// Signed Legacy Transaction
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assertArgument(chainId !== BN_0 || (v === BN_27 || v === BN_28), "non-canonical legacy v", "v", fields[6]);
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tx.signature = Signature.from({
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r: zeroPadValue(fields[7], 32),
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s: zeroPadValue(fields[8], 32),
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v
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});
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tx.hash = keccak256(data);
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}
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return tx;
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}
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function _serializeLegacy(tx, sig) {
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const fields = [
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formatNumber(tx.nonce || 0, "nonce"),
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formatNumber(tx.gasPrice || 0, "gasPrice"),
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formatNumber(tx.gasLimit || 0, "gasLimit"),
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((tx.to != null) ? getAddress(tx.to) : "0x"),
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formatNumber(tx.value || 0, "value"),
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(tx.data || "0x"),
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];
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let chainId = BN_0;
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if (tx.chainId != null) {
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// A chainId was provided; if non-zero we'll use EIP-155
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chainId = getBigInt(tx.chainId, "tx.chainId");
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// We have a chainId in the tx and an EIP-155 v in the signature,
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// make sure they agree with each other
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assertArgument(!sig || sig.networkV == null || sig.legacyChainId === chainId, "tx.chainId/sig.v mismatch", "sig", sig);
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}
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else if (sig) {
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// No chainId provided, but the signature is signing with EIP-155; derive chainId
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const legacy = sig.legacyChainId;
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if (legacy != null) {
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chainId = legacy;
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}
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}
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// Requesting an unsigned transaction
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if (!sig) {
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// We have an EIP-155 transaction (chainId was specified and non-zero)
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if (chainId !== BN_0) {
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fields.push(toBeArray(chainId));
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fields.push("0x");
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fields.push("0x");
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}
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return encodeRlp(fields);
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}
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// We pushed a chainId and null r, s on for hashing only; remove those
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let v = BigInt(27 + sig.yParity);
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if (chainId !== BN_0) {
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v = Signature.getChainIdV(chainId, sig.v);
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}
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else if (BigInt(sig.v) !== v) {
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assertArgument(false, "tx.chainId/sig.v mismatch", "sig", sig);
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}
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fields.push(toBeArray(v));
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fields.push(toBeArray(sig.r));
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fields.push(toBeArray(sig.s));
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return encodeRlp(fields);
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}
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function _parseEipSignature(tx, fields, serialize) {
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let yParity;
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try {
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yParity = handleNumber(fields[0], "yParity");
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if (yParity !== 0 && yParity !== 1) {
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throw new Error("bad yParity");
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}
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}
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catch (error) {
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assertArgument(false, "invalid yParity", "yParity", fields[0]);
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}
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const r = zeroPadValue(fields[1], 32);
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const s = zeroPadValue(fields[2], 32);
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const signature = Signature.from({ r, s, yParity });
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tx.signature = signature;
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}
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function _parseEip1559(data) {
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const fields = decodeRlp(getBytes(data).slice(1));
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assertArgument(Array.isArray(fields) && (fields.length === 9 || fields.length === 12), "invalid field count for transaction type: 2", "data", hexlify(data));
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const maxPriorityFeePerGas = handleUint(fields[2], "maxPriorityFeePerGas");
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const maxFeePerGas = handleUint(fields[3], "maxFeePerGas");
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const tx = {
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type: 2,
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chainId: handleUint(fields[0], "chainId"),
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nonce: handleNumber(fields[1], "nonce"),
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maxPriorityFeePerGas: maxPriorityFeePerGas,
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maxFeePerGas: maxFeePerGas,
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gasPrice: null,
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gasLimit: handleUint(fields[4], "gasLimit"),
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to: handleAddress(fields[5]),
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value: handleUint(fields[6], "value"),
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data: hexlify(fields[7]),
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accessList: handleAccessList(fields[8], "accessList"),
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};
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// Unsigned EIP-1559 Transaction
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if (fields.length === 9) {
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return tx;
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}
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tx.hash = keccak256(data);
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_parseEipSignature(tx, fields.slice(9), _serializeEip1559);
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return tx;
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}
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function _serializeEip1559(tx, sig) {
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const fields = [
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formatNumber(tx.chainId || 0, "chainId"),
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formatNumber(tx.nonce || 0, "nonce"),
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formatNumber(tx.maxPriorityFeePerGas || 0, "maxPriorityFeePerGas"),
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formatNumber(tx.maxFeePerGas || 0, "maxFeePerGas"),
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formatNumber(tx.gasLimit || 0, "gasLimit"),
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((tx.to != null) ? getAddress(tx.to) : "0x"),
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formatNumber(tx.value || 0, "value"),
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(tx.data || "0x"),
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(formatAccessList(tx.accessList || []))
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];
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if (sig) {
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fields.push(formatNumber(sig.yParity, "yParity"));
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fields.push(toBeArray(sig.r));
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fields.push(toBeArray(sig.s));
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}
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return concat(["0x02", encodeRlp(fields)]);
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}
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function _parseEip2930(data) {
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const fields = decodeRlp(getBytes(data).slice(1));
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assertArgument(Array.isArray(fields) && (fields.length === 8 || fields.length === 11), "invalid field count for transaction type: 1", "data", hexlify(data));
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const tx = {
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type: 1,
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chainId: handleUint(fields[0], "chainId"),
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nonce: handleNumber(fields[1], "nonce"),
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gasPrice: handleUint(fields[2], "gasPrice"),
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gasLimit: handleUint(fields[3], "gasLimit"),
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to: handleAddress(fields[4]),
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value: handleUint(fields[5], "value"),
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data: hexlify(fields[6]),
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accessList: handleAccessList(fields[7], "accessList")
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};
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// Unsigned EIP-2930 Transaction
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if (fields.length === 8) {
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return tx;
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}
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tx.hash = keccak256(data);
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_parseEipSignature(tx, fields.slice(8), _serializeEip2930);
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return tx;
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}
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function _serializeEip2930(tx, sig) {
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const fields = [
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formatNumber(tx.chainId || 0, "chainId"),
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formatNumber(tx.nonce || 0, "nonce"),
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formatNumber(tx.gasPrice || 0, "gasPrice"),
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formatNumber(tx.gasLimit || 0, "gasLimit"),
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((tx.to != null) ? getAddress(tx.to) : "0x"),
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formatNumber(tx.value || 0, "value"),
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(tx.data || "0x"),
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(formatAccessList(tx.accessList || []))
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];
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if (sig) {
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fields.push(formatNumber(sig.yParity, "recoveryParam"));
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fields.push(toBeArray(sig.r));
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fields.push(toBeArray(sig.s));
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}
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return concat(["0x01", encodeRlp(fields)]);
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}
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/**
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* A **Transaction** describes an operation to be executed on
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* Ethereum by an Externally Owned Account (EOA). It includes
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* who (the [[to]] address), what (the [[data]]) and how much (the
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* [[value]] in ether) the operation should entail.
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*
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* @example:
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* tx = new Transaction()
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* //_result:
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*
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* tx.data = "0x1234";
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* //_result:
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*/
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export class Transaction {
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#type;
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#to;
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#data;
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#nonce;
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#gasLimit;
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#gasPrice;
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#maxPriorityFeePerGas;
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#maxFeePerGas;
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#value;
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#chainId;
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#sig;
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#accessList;
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/**
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* The transaction type.
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*
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* If null, the type will be automatically inferred based on
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* explicit properties.
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*/
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get type() { return this.#type; }
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set type(value) {
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switch (value) {
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case null:
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this.#type = null;
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break;
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case 0:
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case "legacy":
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this.#type = 0;
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break;
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case 1:
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case "berlin":
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case "eip-2930":
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this.#type = 1;
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break;
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case 2:
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case "london":
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case "eip-1559":
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this.#type = 2;
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break;
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default:
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assertArgument(false, "unsupported transaction type", "type", value);
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}
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}
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/**
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* The name of the transaction type.
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*/
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get typeName() {
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switch (this.type) {
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case 0: return "legacy";
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case 1: return "eip-2930";
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case 2: return "eip-1559";
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}
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return null;
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}
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/**
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* The ``to`` address for the transaction or ``null`` if the
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* transaction is an ``init`` transaction.
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*/
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get to() { return this.#to; }
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set to(value) {
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this.#to = (value == null) ? null : getAddress(value);
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}
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/**
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* The transaction nonce.
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*/
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get nonce() { return this.#nonce; }
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set nonce(value) { this.#nonce = getNumber(value, "value"); }
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/**
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* The gas limit.
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*/
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get gasLimit() { return this.#gasLimit; }
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set gasLimit(value) { this.#gasLimit = getBigInt(value); }
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/**
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* The gas price.
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*
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* On legacy networks this defines the fee that will be paid. On
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* EIP-1559 networks, this should be ``null``.
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*/
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get gasPrice() {
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const value = this.#gasPrice;
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if (value == null && (this.type === 0 || this.type === 1)) {
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return BN_0;
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}
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return value;
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}
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set gasPrice(value) {
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this.#gasPrice = (value == null) ? null : getBigInt(value, "gasPrice");
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}
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/**
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* The maximum priority fee per unit of gas to pay. On legacy
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* networks this should be ``null``.
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*/
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get maxPriorityFeePerGas() {
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const value = this.#maxPriorityFeePerGas;
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if (value == null) {
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if (this.type === 2) {
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return BN_0;
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}
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return null;
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}
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return value;
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}
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set maxPriorityFeePerGas(value) {
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this.#maxPriorityFeePerGas = (value == null) ? null : getBigInt(value, "maxPriorityFeePerGas");
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}
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/**
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* The maximum total fee per unit of gas to pay. On legacy
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* networks this should be ``null``.
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*/
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get maxFeePerGas() {
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const value = this.#maxFeePerGas;
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if (value == null) {
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if (this.type === 2) {
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return BN_0;
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}
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return null;
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}
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return value;
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}
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set maxFeePerGas(value) {
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this.#maxFeePerGas = (value == null) ? null : getBigInt(value, "maxFeePerGas");
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}
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/**
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* The transaction data. For ``init`` transactions this is the
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* deployment code.
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*/
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get data() { return this.#data; }
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set data(value) { this.#data = hexlify(value); }
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/**
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* The amount of ether to send in this transactions.
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*/
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get value() { return this.#value; }
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set value(value) {
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this.#value = getBigInt(value, "value");
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}
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/**
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* The chain ID this transaction is valid on.
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*/
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get chainId() { return this.#chainId; }
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set chainId(value) { this.#chainId = getBigInt(value); }
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/**
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* If signed, the signature for this transaction.
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*/
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get signature() { return this.#sig || null; }
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set signature(value) {
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this.#sig = (value == null) ? null : Signature.from(value);
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}
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/**
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* The access list.
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*
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* An access list permits discounted (but pre-paid) access to
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* bytecode and state variable access within contract execution.
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*/
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get accessList() {
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const value = this.#accessList || null;
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if (value == null) {
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if (this.type === 1 || this.type === 2) {
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return [];
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}
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return null;
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}
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return value;
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}
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set accessList(value) {
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this.#accessList = (value == null) ? null : accessListify(value);
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}
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/**
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* Creates a new Transaction with default values.
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*/
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constructor() {
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this.#type = null;
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this.#to = null;
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this.#nonce = 0;
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this.#gasLimit = BigInt(0);
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this.#gasPrice = null;
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this.#maxPriorityFeePerGas = null;
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this.#maxFeePerGas = null;
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this.#data = "0x";
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this.#value = BigInt(0);
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this.#chainId = BigInt(0);
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this.#sig = null;
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this.#accessList = null;
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}
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/**
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* The transaction hash, if signed. Otherwise, ``null``.
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*/
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get hash() {
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if (this.signature == null) {
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return null;
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}
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return keccak256(this.serialized);
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}
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/**
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* The pre-image hash of this transaction.
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*
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* This is the digest that a [[Signer]] must sign to authorize
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* this transaction.
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*/
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get unsignedHash() {
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return keccak256(this.unsignedSerialized);
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}
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/**
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* The sending address, if signed. Otherwise, ``null``.
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*/
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get from() {
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if (this.signature == null) {
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return null;
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}
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return recoverAddress(this.unsignedHash, this.signature);
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}
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/**
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* The public key of the sender, if signed. Otherwise, ``null``.
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*/
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get fromPublicKey() {
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if (this.signature == null) {
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return null;
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}
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return SigningKey.recoverPublicKey(this.unsignedHash, this.signature);
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}
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/**
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* Returns true if signed.
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*
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* This provides a Type Guard that properties requiring a signed
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* transaction are non-null.
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*/
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isSigned() {
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//isSigned(): this is SignedTransaction {
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return this.signature != null;
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}
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/**
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* The serialized transaction.
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*
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* This throws if the transaction is unsigned. For the pre-image,
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* use [[unsignedSerialized]].
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*/
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get serialized() {
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assert(this.signature != null, "cannot serialize unsigned transaction; maybe you meant .unsignedSerialized", "UNSUPPORTED_OPERATION", { operation: ".serialized" });
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switch (this.inferType()) {
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case 0:
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return _serializeLegacy(this, this.signature);
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case 1:
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return _serializeEip2930(this, this.signature);
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case 2:
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return _serializeEip1559(this, this.signature);
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}
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assert(false, "unsupported transaction type", "UNSUPPORTED_OPERATION", { operation: ".serialized" });
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}
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/**
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* The transaction pre-image.
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*
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* The hash of this is the digest which needs to be signed to
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* authorize this transaction.
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*/
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get unsignedSerialized() {
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switch (this.inferType()) {
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case 0:
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return _serializeLegacy(this);
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case 1:
|
|
return _serializeEip2930(this);
|
|
case 2:
|
|
return _serializeEip1559(this);
|
|
}
|
|
assert(false, "unsupported transaction type", "UNSUPPORTED_OPERATION", { operation: ".unsignedSerialized" });
|
|
}
|
|
/**
|
|
* Return the most "likely" type; currently the highest
|
|
* supported transaction type.
|
|
*/
|
|
inferType() {
|
|
return (this.inferTypes().pop());
|
|
}
|
|
/**
|
|
* Validates the explicit properties and returns a list of compatible
|
|
* transaction types.
|
|
*/
|
|
inferTypes() {
|
|
// Checks that there are no conflicting properties set
|
|
const hasGasPrice = this.gasPrice != null;
|
|
const hasFee = (this.maxFeePerGas != null || this.maxPriorityFeePerGas != null);
|
|
const hasAccessList = (this.accessList != null);
|
|
//if (hasGasPrice && hasFee) {
|
|
// throw new Error("transaction cannot have gasPrice and maxFeePerGas");
|
|
//}
|
|
if (this.maxFeePerGas != null && this.maxPriorityFeePerGas != null) {
|
|
assert(this.maxFeePerGas >= this.maxPriorityFeePerGas, "priorityFee cannot be more than maxFee", "BAD_DATA", { value: this });
|
|
}
|
|
//if (this.type === 2 && hasGasPrice) {
|
|
// throw new Error("eip-1559 transaction cannot have gasPrice");
|
|
//}
|
|
assert(!hasFee || (this.type !== 0 && this.type !== 1), "transaction type cannot have maxFeePerGas or maxPriorityFeePerGas", "BAD_DATA", { value: this });
|
|
assert(this.type !== 0 || !hasAccessList, "legacy transaction cannot have accessList", "BAD_DATA", { value: this });
|
|
const types = [];
|
|
// Explicit type
|
|
if (this.type != null) {
|
|
types.push(this.type);
|
|
}
|
|
else {
|
|
if (hasFee) {
|
|
types.push(2);
|
|
}
|
|
else if (hasGasPrice) {
|
|
types.push(1);
|
|
if (!hasAccessList) {
|
|
types.push(0);
|
|
}
|
|
}
|
|
else if (hasAccessList) {
|
|
types.push(1);
|
|
types.push(2);
|
|
}
|
|
else {
|
|
types.push(0);
|
|
types.push(1);
|
|
types.push(2);
|
|
}
|
|
}
|
|
types.sort();
|
|
return types;
|
|
}
|
|
/**
|
|
* Returns true if this transaction is a legacy transaction (i.e.
|
|
* ``type === 0``).
|
|
*
|
|
* This provides a Type Guard that the related properties are
|
|
* non-null.
|
|
*/
|
|
isLegacy() {
|
|
return (this.type === 0);
|
|
}
|
|
/**
|
|
* Returns true if this transaction is berlin hardform transaction (i.e.
|
|
* ``type === 1``).
|
|
*
|
|
* This provides a Type Guard that the related properties are
|
|
* non-null.
|
|
*/
|
|
isBerlin() {
|
|
return (this.type === 1);
|
|
}
|
|
/**
|
|
* Returns true if this transaction is london hardform transaction (i.e.
|
|
* ``type === 2``).
|
|
*
|
|
* This provides a Type Guard that the related properties are
|
|
* non-null.
|
|
*/
|
|
isLondon() {
|
|
return (this.type === 2);
|
|
}
|
|
/**
|
|
* Create a copy of this transaciton.
|
|
*/
|
|
clone() {
|
|
return Transaction.from(this);
|
|
}
|
|
/**
|
|
* Return a JSON-friendly object.
|
|
*/
|
|
toJSON() {
|
|
const s = (v) => {
|
|
if (v == null) {
|
|
return null;
|
|
}
|
|
return v.toString();
|
|
};
|
|
return {
|
|
type: this.type,
|
|
to: this.to,
|
|
// from: this.from,
|
|
data: this.data,
|
|
nonce: this.nonce,
|
|
gasLimit: s(this.gasLimit),
|
|
gasPrice: s(this.gasPrice),
|
|
maxPriorityFeePerGas: s(this.maxPriorityFeePerGas),
|
|
maxFeePerGas: s(this.maxFeePerGas),
|
|
value: s(this.value),
|
|
chainId: s(this.chainId),
|
|
sig: this.signature ? this.signature.toJSON() : null,
|
|
accessList: this.accessList
|
|
};
|
|
}
|
|
/**
|
|
* Create a **Transaction** from a serialized transaction or a
|
|
* Transaction-like object.
|
|
*/
|
|
static from(tx) {
|
|
if (tx == null) {
|
|
return new Transaction();
|
|
}
|
|
if (typeof (tx) === "string") {
|
|
const payload = getBytes(tx);
|
|
if (payload[0] >= 0x7f) { // @TODO: > vs >= ??
|
|
return Transaction.from(_parseLegacy(payload));
|
|
}
|
|
switch (payload[0]) {
|
|
case 1: return Transaction.from(_parseEip2930(payload));
|
|
case 2: return Transaction.from(_parseEip1559(payload));
|
|
}
|
|
assert(false, "unsupported transaction type", "UNSUPPORTED_OPERATION", { operation: "from" });
|
|
}
|
|
const result = new Transaction();
|
|
if (tx.type != null) {
|
|
result.type = tx.type;
|
|
}
|
|
if (tx.to != null) {
|
|
result.to = tx.to;
|
|
}
|
|
if (tx.nonce != null) {
|
|
result.nonce = tx.nonce;
|
|
}
|
|
if (tx.gasLimit != null) {
|
|
result.gasLimit = tx.gasLimit;
|
|
}
|
|
if (tx.gasPrice != null) {
|
|
result.gasPrice = tx.gasPrice;
|
|
}
|
|
if (tx.maxPriorityFeePerGas != null) {
|
|
result.maxPriorityFeePerGas = tx.maxPriorityFeePerGas;
|
|
}
|
|
if (tx.maxFeePerGas != null) {
|
|
result.maxFeePerGas = tx.maxFeePerGas;
|
|
}
|
|
if (tx.data != null) {
|
|
result.data = tx.data;
|
|
}
|
|
if (tx.value != null) {
|
|
result.value = tx.value;
|
|
}
|
|
if (tx.chainId != null) {
|
|
result.chainId = tx.chainId;
|
|
}
|
|
if (tx.signature != null) {
|
|
result.signature = Signature.from(tx.signature);
|
|
}
|
|
if (tx.accessList != null) {
|
|
result.accessList = tx.accessList;
|
|
}
|
|
if (tx.hash != null) {
|
|
assertArgument(result.isSigned(), "unsigned transaction cannot define hash", "tx", tx);
|
|
assertArgument(result.hash === tx.hash, "hash mismatch", "tx", tx);
|
|
}
|
|
if (tx.from != null) {
|
|
assertArgument(result.isSigned(), "unsigned transaction cannot define from", "tx", tx);
|
|
assertArgument(result.from.toLowerCase() === (tx.from || "").toLowerCase(), "from mismatch", "tx", tx);
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
//# sourceMappingURL=transaction.js.map
|