Delegate intrekken

Wat doet het intrekken van een gemachtigde?

Het intrekken van een gemachtigde wist de huidige gemachtigde van het token account en zet het gedelegeerde bedrag terug naar nul.

Na intrekking heeft de voormalige gemachtigde niet langer de bevoegdheid om tokens namens het token account over te dragen of te verbranden.

Hoe trek je een gemachtigde in

Het intrekken van een gemachtigde gebruikt de Revoke-instructie van het Token Program.

De Revoke-instructie wist de gemachtigde-velden op het bron-token account. In het Token Program ondertekent de eigenaar van het token account de intrekking. In het Token Extensions Program kan de huidige gemachtigde de delegatie ook intrekken.

Bronverwijzing

ItemBeschrijvingToken ProgramToken Extensions Program
AccountDe status van het token account slaat de gemachtigde en het gedelegeerde bedrag op.BronBron
RevokeEen instructie die de huidige gemachtigde van een token account verwijdert.BronBron
process_revokeGedeelde processorlogica voor het intrekken van gemachtigden.BronBron

Typescript

De Kit-voorbeelden hieronder tonen de aanbevolen aanpak met @solana/kit. Legacy-voorbeelden met @solana/web3.js zijn ter referentie opgenomen.

Kit

import { generateKeyPairSigner } from "@solana/kit";
import { createLocalClient } from "@solana/kit-client-rpc";
import {
findAssociatedTokenPda,
tokenProgram,
TOKEN_PROGRAM_ADDRESS
} from "@solana-program/token";
const client = await createLocalClient()
.use(tokenProgram());
const mint = await generateKeyPairSigner();
const delegate = await generateKeyPairSigner();
const [tokenAccount] = await findAssociatedTokenPda({
mint: mint.address,
owner: client.payer.address,
tokenProgram: TOKEN_PROGRAM_ADDRESS
});
const result = await client.token.instructions
.revoke({
source: tokenAccount, // Token account whose delegate approval changes.
owner: client.payer // Owner approving this delegate change.
})
.sendTransaction();
const tokenAccountData = await client.token.accounts.token.fetch(tokenAccount);
console.log("Mint Address:", mint.address);
console.log("\nToken Account Address:", tokenAccount);
console.log("Token Account:", tokenAccountData.data);
console.log("\nDelegate Address:", delegate.address);
console.log("\nTransaction Signature:", result.context.signature);
Console
Click to execute the code.

Web3.js

import { Connection, Keypair, LAMPORTS_PER_SOL } from "@solana/web3.js";
import {
createAssociatedTokenAccount,
approveChecked,
createMint,
getAccount,
mintToChecked,
revoke,
TOKEN_PROGRAM_ID
} from "@solana/spl-token";
const result = await revoke(
connection, // Connection to the local validator.
feePayer, // Account paying transaction fees.
associatedTokenAccount, // Token account whose delegate approval changes.
feePayer, // Owner approving this delegate change.
[], // Additional multisig signers.
{
commitment: "confirmed" // Confirmation options for the transaction.
},
TOKEN_PROGRAM_ID // Token program to invoke.
);
const tokenAccountData = await getAccount(
connection,
associatedTokenAccount,
"confirmed",
TOKEN_PROGRAM_ID
);
console.log("Mint Address:", mintPubkey.toBase58());
console.log(
"\nAssociated Token Account Address:",
associatedTokenAccount.toBase58()
);
console.log("Associated Token Account:", tokenAccountData);
console.log("\nDelegate Address:", delegate.publicKey.toBase58());
console.log("\nTransaction Signature:", result);
Console
Click to execute the code.

Rust

Rust
use anyhow::Result;
use solana_client::nonblocking::rpc_client::RpcClient;
use solana_commitment_config::CommitmentConfig;
use solana_sdk::{
program_pack::Pack,
signature::{Keypair, Signer},
transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
address::get_associated_token_address, instruction::create_associated_token_account,
};
use spl_token_interface::{
id as token_program_id,
instruction::{approve_checked, initialize_mint, mint_to_checked, revoke},
state::{Account, Mint},
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let delegate = Keypair::new();
let transaction = Transaction::new_signed_with_payer(
&[
revoke(
&token_program_id(), // Token program to invoke.
&associated_token_address, // Token account whose delegate approval changes.
&fee_payer.pubkey(), // Owner approving this delegate change.
&[], // Additional multisig signers.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer],
latest_blockhash,
);
let transaction_signature = client.send_and_confirm_transaction(&transaction).await?;
let token_account = client.get_account(&associated_token_address).await?;
let token_data = Account::unpack(&token_account.data)?;
println!("Mint Address: {}", mint.pubkey());
println!(
"\nAssociated Token Account Address: {}",
associated_token_address
);
println!("Associated Token Account: {:#?}", token_data);
println!("\nDelegate Address: {}", delegate.pubkey());
println!("\nTransaction Signature: {}", transaction_signature);
Ok(())
}
Console
Click to execute the code.

Python

Python
#!/usr/bin/env python3
import asyncio
import json
from solana.rpc.async_api import AsyncClient
from solders.keypair import Keypair
from solders.message import Message
from solders.pubkey import Pubkey
from solders.system_program import create_account, CreateAccountParams
from solders.transaction import Transaction
from spl.token.async_client import AsyncToken
from spl.token.instructions import (
approve_checked,
ApproveCheckedParams,
create_associated_token_account,
get_associated_token_address,
initialize_mint,
InitializeMintParams,
mint_to_checked,
MintToCheckedParams,
revoke,
RevokeParams,
)
from spl.token.constants import MINT_LEN, TOKEN_PROGRAM_ID
DECIMALS = 2
AMOUNT_TO_MINT = 100
AMOUNT_TO_APPROVE = 25
async def main():
rpc = AsyncClient("http://localhost:8899")
delegate = Keypair()
async with rpc:
revoke_delegate_instruction = revoke(
RevokeParams(
program_id=TOKEN_PROGRAM_ID, # Token program to invoke.
account=token_account_address, # Token account whose delegate approval changes.
owner=fee_payer.pubkey(), # Account that owns the token account.
)
)
latest_blockhash = await rpc.get_latest_blockhash()
transaction = Transaction(
[fee_payer],
Message([revoke_delegate_instruction], fee_payer.pubkey()),
latest_blockhash.value.blockhash,
)
result = await rpc.send_transaction(transaction)
token_account_info = await token.get_account_info(token_account_address)
token_account = {
key: str(value) if isinstance(value, Pubkey) else value
for key, value in token_account_info._asdict().items()
}
print("Mint Address:", mint.pubkey())
print("\nToken Account Address:", token_account_address)
print("Token Account:")
print(json.dumps(token_account, indent=2))
print("\nDelegate Address:", delegate.pubkey())
print("\nTransaction Signature:", result.value)
if __name__ == "__main__":
asyncio.run(main())
Console
Click to execute the code.

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