85 lines
3.2 KiB
TypeScript
85 lines
3.2 KiB
TypeScript
import { getAddress, resolveAddress } from "../address/index.js";
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import { hashMessage, TypedDataEncoder } from "../hash/index.js";
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import { AbstractSigner } from "../providers/index.js";
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import { computeAddress, Transaction } from "../transaction/index.js";
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import { defineProperties, logger, resolveProperties } from "../utils/index.js";
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import type { SigningKey } from "../crypto/index.js";
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import type { TypedDataDomain, TypedDataField } from "../hash/index.js";
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import type { Provider, TransactionRequest } from "../providers/index.js";
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import type { TransactionLike } from "../transaction/index.js";
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export class BaseWallet extends AbstractSigner {
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readonly address!: string;
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readonly #signingKey: SigningKey;
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constructor(privateKey: SigningKey, provider?: null | Provider) {
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super(provider);
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this.#signingKey = privateKey;
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const address = computeAddress(this.signingKey.publicKey);
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defineProperties<BaseWallet>(this, { address });
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}
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// Store these in getters to reduce visibility in console.log
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get signingKey(): SigningKey { return this.#signingKey; }
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get privateKey(): string { return this.signingKey.privateKey; }
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async getAddress(): Promise<string> { return this.address; }
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connect(provider: null | Provider): BaseWallet {
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return new BaseWallet(this.#signingKey, provider);
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}
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async signTransaction(_tx: TransactionRequest): Promise<string> {
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// Replace any Addressable or ENS name with an address
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const tx = <TransactionLike<string>>Object.assign({ }, _tx, await resolveProperties({
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to: (_tx.to ? resolveAddress(_tx.to, this.provider): undefined),
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from: (_tx.from ? resolveAddress(_tx.from, this.provider): undefined)
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}));
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if (tx.from != null) {
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if (getAddress(tx.from) !== this.address) {
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logger.throwArgumentError("transaction from address mismatch", "tx.from", _tx.from);
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}
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delete tx.from;
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}
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// Build the transaction
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const btx = Transaction.from(tx);
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btx.signature = this.signingKey.sign(btx.unsignedHash);
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return btx.serialized;
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}
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async signMessage(message: string | Uint8Array): Promise<string> {
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return this.signingKey.sign(hashMessage(message)).serialized;
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}
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async signTypedData(domain: TypedDataDomain, types: Record<string, Array<TypedDataField>>, value: Record<string, any>): Promise<string> {
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// Populate any ENS names
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const populated = await TypedDataEncoder.resolveNames(domain, types, value, async (name: string) => {
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if (this.provider == null) {
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return logger.throwError("cannot resolve ENS names without a provider", "UNSUPPORTED_OPERATION", {
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operation: "resolveName",
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info: { name }
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});
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}
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const address = await this.provider.resolveName(name);
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if (address == null) {
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return logger.throwError("unconfigured ENS name", "UNCONFIGURED_NAME", {
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value: name
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});
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}
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return address;
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});
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return this.signingKey.sign(TypedDataEncoder.hash(populated.domain, types, populated.value)).serialized;
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}
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}
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