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Текущая директория: /var/www/bitcardoApp/node_modules/ethers/lib.esm/providers
Просмотр файла: abstract-signer.js
/**
* Generally the [[Wallet]] and [[JsonRpcSigner]] and their sub-classes
* are sufficent for most developers, but this is provided to
* fascilitate more complex Signers.
*
* @_section: api/providers/abstract-signer: Subclassing Signer [abstract-signer]
*/
import { resolveAddress } from "../address/index.js";
import { Transaction } from "../transaction/index.js";
import { defineProperties, getBigInt, resolveProperties, assert, assertArgument } from "../utils/index.js";
import { copyRequest } from "./provider.js";
function checkProvider(signer, operation) {
if (signer.provider) {
return signer.provider;
}
assert(false, "missing provider", "UNSUPPORTED_OPERATION", { operation });
}
async function populate(signer, tx) {
let pop = copyRequest(tx);
if (pop.to != null) {
pop.to = resolveAddress(pop.to, signer);
}
if (pop.from != null) {
const from = pop.from;
pop.from = Promise.all([
signer.getAddress(),
resolveAddress(from, signer)
]).then(([address, from]) => {
assertArgument(address.toLowerCase() === from.toLowerCase(), "transaction from mismatch", "tx.from", from);
return address;
});
}
else {
pop.from = signer.getAddress();
}
return await resolveProperties(pop);
}
/**
* An **AbstractSigner** includes most of teh functionality required
* to get a [[Signer]] working as expected, but requires a few
* Signer-specific methods be overridden.
*
*/
export class AbstractSigner {
/**
* The provider this signer is connected to.
*/
provider;
/**
* Creates a new Signer connected to %%provider%%.
*/
constructor(provider) {
defineProperties(this, { provider: (provider || null) });
}
async getNonce(blockTag) {
return checkProvider(this, "getTransactionCount").getTransactionCount(await this.getAddress(), blockTag);
}
async populateCall(tx) {
const pop = await populate(this, tx);
return pop;
}
async populateTransaction(tx) {
const provider = checkProvider(this, "populateTransaction");
const pop = await populate(this, tx);
if (pop.nonce == null) {
pop.nonce = await this.getNonce("pending");
}
if (pop.gasLimit == null) {
pop.gasLimit = await this.estimateGas(pop);
}
// Populate the chain ID
const network = await (this.provider).getNetwork();
if (pop.chainId != null) {
const chainId = getBigInt(pop.chainId);
assertArgument(chainId === network.chainId, "transaction chainId mismatch", "tx.chainId", tx.chainId);
}
else {
pop.chainId = network.chainId;
}
// Do not allow mixing pre-eip-1559 and eip-1559 properties
const hasEip1559 = (pop.maxFeePerGas != null || pop.maxPriorityFeePerGas != null);
if (pop.gasPrice != null && (pop.type === 2 || hasEip1559)) {
assertArgument(false, "eip-1559 transaction do not support gasPrice", "tx", tx);
}
else if ((pop.type === 0 || pop.type === 1) && hasEip1559) {
assertArgument(false, "pre-eip-1559 transaction do not support maxFeePerGas/maxPriorityFeePerGas", "tx", tx);
}
if ((pop.type === 2 || pop.type == null) && (pop.maxFeePerGas != null && pop.maxPriorityFeePerGas != null)) {
// Fully-formed EIP-1559 transaction (skip getFeeData)
pop.type = 2;
}
else if (pop.type === 0 || pop.type === 1) {
// Explicit Legacy or EIP-2930 transaction
// We need to get fee data to determine things
const feeData = await provider.getFeeData();
assert(feeData.gasPrice != null, "network does not support gasPrice", "UNSUPPORTED_OPERATION", {
operation: "getGasPrice"
});
// Populate missing gasPrice
if (pop.gasPrice == null) {
pop.gasPrice = feeData.gasPrice;
}
}
else {
// We need to get fee data to determine things
const feeData = await provider.getFeeData();
if (pop.type == null) {
// We need to auto-detect the intended type of this transaction...
if (feeData.maxFeePerGas != null && feeData.maxPriorityFeePerGas != null) {
// The network supports EIP-1559!
// Upgrade transaction from null to eip-1559
pop.type = 2;
if (pop.gasPrice != null) {
// Using legacy gasPrice property on an eip-1559 network,
// so use gasPrice as both fee properties
const gasPrice = pop.gasPrice;
delete pop.gasPrice;
pop.maxFeePerGas = gasPrice;
pop.maxPriorityFeePerGas = gasPrice;
}
else {
// Populate missing fee data
if (pop.maxFeePerGas == null) {
pop.maxFeePerGas = feeData.maxFeePerGas;
}
if (pop.maxPriorityFeePerGas == null) {
pop.maxPriorityFeePerGas = feeData.maxPriorityFeePerGas;
}
}
}
else if (feeData.gasPrice != null) {
// Network doesn't support EIP-1559...
// ...but they are trying to use EIP-1559 properties
assert(!hasEip1559, "network does not support EIP-1559", "UNSUPPORTED_OPERATION", {
operation: "populateTransaction"
});
// Populate missing fee data
if (pop.gasPrice == null) {
pop.gasPrice = feeData.gasPrice;
}
// Explicitly set untyped transaction to legacy
// @TODO: Maybe this shold allow type 1?
pop.type = 0;
}
else {
// getFeeData has failed us.
assert(false, "failed to get consistent fee data", "UNSUPPORTED_OPERATION", {
operation: "signer.getFeeData"
});
}
}
else if (pop.type === 2 || pop.type === 3) {
// Explicitly using EIP-1559 or EIP-4844
// Populate missing fee data
if (pop.maxFeePerGas == null) {
pop.maxFeePerGas = feeData.maxFeePerGas;
}
if (pop.maxPriorityFeePerGas == null) {
pop.maxPriorityFeePerGas = feeData.maxPriorityFeePerGas;
}
}
}
//@TOOD: Don't await all over the place; save them up for
// the end for better batching
return await resolveProperties(pop);
}
async estimateGas(tx) {
return checkProvider(this, "estimateGas").estimateGas(await this.populateCall(tx));
}
async call(tx) {
return checkProvider(this, "call").call(await this.populateCall(tx));
}
async resolveName(name) {
const provider = checkProvider(this, "resolveName");
return await provider.resolveName(name);
}
async sendTransaction(tx) {
const provider = checkProvider(this, "sendTransaction");
const pop = await this.populateTransaction(tx);
delete pop.from;
const txObj = Transaction.from(pop);
return await provider.broadcastTransaction(await this.signTransaction(txObj));
}
}
/**
* A **VoidSigner** is a class deisgned to allow an address to be used
* in any API which accepts a Signer, but for which there are no
* credentials available to perform any actual signing.
*
* This for example allow impersonating an account for the purpose of
* static calls or estimating gas, but does not allow sending transactions.
*/
export class VoidSigner extends AbstractSigner {
/**
* The signer address.
*/
address;
/**
* Creates a new **VoidSigner** with %%address%% attached to
* %%provider%%.
*/
constructor(address, provider) {
super(provider);
defineProperties(this, { address });
}
async getAddress() { return this.address; }
connect(provider) {
return new VoidSigner(this.address, provider);
}
#throwUnsupported(suffix, operation) {
assert(false, `VoidSigner cannot sign ${suffix}`, "UNSUPPORTED_OPERATION", { operation });
}
async signTransaction(tx) {
this.#throwUnsupported("transactions", "signTransaction");
}
async signMessage(message) {
this.#throwUnsupported("messages", "signMessage");
}
async signTypedData(domain, types, value) {
this.#throwUnsupported("typed-data", "signTypedData");
}
}
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