永久委托

什么是永久委托?

Token Extensions Program 的 PermanentDelegate 铸币扩展为铸币本身分配了一个委托权限。

永久委托是一个铸币级别的权限,可以授权该铸币的任何代币账户进行转移和销毁操作。它充当该铸币所有代币账户的全局委托,代币账户所有者无法从其代币账户中撤销永久委托。

铸币权限还可以稍后使用 AuthorityType::PermanentDelegate 通过 SetAuthority 轮换永久委托。

如何创建和使用永久委托

要创建和使用永久委托:

  1. 计算铸币账户大小以及铸币和 PermanentDelegate 扩展所需的租金。
  2. 使用 CreateAccount 创建铸币账户,初始化 PermanentDelegate,并使用 InitializeMint 初始化铸币。
  3. 提交由永久委托签名的 TransferCheckedBurnChecked。代币程序处理这些指令的方式与代币账户所有者签名时相同。

计算账户大小

计算基础铸币加上 PermanentDelegate 扩展的铸币账户大小。这是 CreateAccount 中使用的大小。

计算租金

使用铸币加上 PermanentDelegate 扩展所需的大小来计算租金。

创建铸币账户

使用计算的空间和 lamport 创建 mint account。

初始化 PermanentDelegate

在 mint 上初始化 PermanentDelegate 扩展。

初始化 mint

在同一交易中使用 InitializeMint 初始化 mint。

创建 token account 并铸造代币

为所有者和接收者创建 token account,然后向所有者 token account 铸造代币。

使用永久委托进行转账

使用由永久委托签名的 TransferChecked 转账代币。

计算账户大小

计算基础铸币加上 PermanentDelegate 扩展的铸币账户大小。这是 CreateAccount 中使用的大小。

计算租金

使用铸币加上 PermanentDelegate 扩展所需的大小来计算租金。

创建铸币账户

使用计算的空间和 lamport 创建 mint account。

初始化 PermanentDelegate

在 mint 上初始化 PermanentDelegate 扩展。

初始化 mint

在同一交易中使用 InitializeMint 初始化 mint。

创建 token account 并铸造代币

为所有者和接收者创建 token account,然后向所有者 token account 铸造代币。

使用永久委托进行转账

使用由永久委托签名的 TransferChecked 转账代币。

Example
const client = await createClient()
.use(generatedPayer())
.use(
solanaRpc({
rpcUrl: "http://localhost:8899",
rpcSubscriptionsUrl: "ws://localhost:8900"
})
)
.use(rpcAirdrop())
.use(airdropPayer(lamports(1_000_000_000n)));
const mint = await generateKeyPairSigner();
const owner = await generateKeyPairSigner();
const delegate = await generateKeyPairSigner();
const recipient = await generateKeyPairSigner();
const permanentDelegateExtension = extension("PermanentDelegate", {
delegate: delegate.address
});
const mintSpace = BigInt(getMintSize([permanentDelegateExtension]));

指令顺序

InitializePermanentDelegate 必须在 InitializeMint 之前。 CreateAccountInitializePermanentDelegateInitializeMint 必须包含在同一交易中。

源代码参考

项目描述源代码
PermanentDelegateMint 扩展,用于存储在 mint 的每个 token account 上授权的委托。源代码
InitializePermanentDelegateInitializeMint 之前初始化永久委托的指令。源代码
SetAuthorityAuthorityType::PermanentDelegate 一起使用以轮换委托的基本代币指令。源代码
AuthorityType::PermanentDelegateSetAuthority 一起使用以在 mint 上轮换永久委托的权限标识符。源代码
process_initialize_permanent_delegate将永久委托扩展写入 mint 的处理器逻辑。源代码
process_set_authority当使用 AuthorityType::PermanentDelegate 时验证和轮换永久委托的处理器逻辑。源代码

Typescript

以下 Kit 示例直接使用生成的指令。包含使用 @solana/web3.js@solana/spl-token 的旧版示例以供参考。

Kit

Instructions
import {
lamports,
createClient,
generateKeyPairSigner,
unwrapOption
} from "@solana/kit";
import { solanaRpc, rpcAirdrop } from "@solana/kit-plugin-rpc";
import { generatedPayer, airdropPayer } from "@solana/kit-plugin-signer";
import { getCreateAccountInstruction } from "@solana-program/system";
import {
extension,
fetchMint,
fetchToken,
findAssociatedTokenPda,
getCreateAssociatedTokenInstructionAsync,
getInitializeMintInstruction,
getInitializePermanentDelegateInstruction,
getMintSize,
getMintToCheckedInstruction,
getTransferCheckedInstruction,
isExtension,
TOKEN_2022_PROGRAM_ADDRESS
} from "@solana-program/token-2022";
const client = await createClient()
.use(generatedPayer())
.use(
solanaRpc({
rpcUrl: "http://localhost:8899",
rpcSubscriptionsUrl: "ws://localhost:8900"
})
)
.use(rpcAirdrop())
.use(airdropPayer(lamports(1_000_000_000n)));
const mint = await generateKeyPairSigner();
const owner = await generateKeyPairSigner();
const delegate = await generateKeyPairSigner();
const recipient = await generateKeyPairSigner();
const permanentDelegateExtension = extension("PermanentDelegate", {
delegate: delegate.address
});
const mintSpace = BigInt(getMintSize([permanentDelegateExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer, // Account funding the new mint account.
newAccount: mint, // New mint account to create.
lamports: mintRent, // Lamports funding the mint account rent.
space: mintSpace, // Account size in bytes for the mint plus PermanentDelegate.
programAddress: TOKEN_2022_PROGRAM_ADDRESS // Program that owns the mint account.
}),
getInitializePermanentDelegateInstruction({
mint: mint.address, // Mint account that stores the PermanentDelegate extension.
delegate: delegate.address // Permanent delegate authorized for all token accounts for the mint.
}),
getInitializeMintInstruction({
mint: mint.address, // Mint account to initialize.
decimals: 0, // Number of decimals for the token.
mintAuthority: client.payer.address, // Authority allowed to mint new tokens.
freezeAuthority: client.payer.address // Authority allowed to freeze token accounts.
})
]);
const [sourceToken] = await findAssociatedTokenPda({
mint: mint.address,
owner: owner.address,
tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});
const [destinationToken] = await findAssociatedTokenPda({
mint: mint.address,
owner: recipient.address,
tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});
await client.sendTransaction([
await getCreateAssociatedTokenInstructionAsync({
payer: client.payer, // Account funding the associated token account creation.
mint: mint.address, // Mint for the associated token account.
owner: owner.address // Owner of the source token account.
}),
await getCreateAssociatedTokenInstructionAsync({
payer: client.payer, // Account funding the associated token account creation.
mint: mint.address, // Mint for the associated token account.
owner: recipient.address // Owner of the destination token account.
}),
getMintToCheckedInstruction({
mint: mint.address, // Mint account that issues the tokens.
token: sourceToken, // Token account receiving the newly minted tokens.
mintAuthority: client.payer, // Signer authorized to mint new tokens.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
await client.sendTransaction([
getTransferCheckedInstruction({
source: sourceToken, // Token account sending the transfer.
mint: mint.address, // Mint with the permanent delegate configuration.
destination: destinationToken, // Token account receiving the transfer.
authority: delegate, // Permanent delegate signing the transfer.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
const destinationAccount = await fetchToken(client.rpc, destinationToken);
const mintAccount = await fetchMint(client.rpc, mint.address);
const permanentDelegate = (
unwrapOption(mintAccount.data.extensions) ?? []
).find((item) => isExtension("PermanentDelegate", item));
console.log("Mint Address:", mint.address);
console.log("Destination Amount:", destinationAccount.data.amount);
console.log("Permanent Delegate Extension:", permanentDelegate);
Console
Click to execute the code.

Web3.js

Instructions
import {
Connection,
Keypair,
sendAndConfirmTransaction,
SystemProgram,
Transaction,
LAMPORTS_PER_SOL
} from "@solana/web3.js";
import {
ASSOCIATED_TOKEN_PROGRAM_ID,
createAssociatedTokenAccountInstruction,
createInitializeMintInstruction,
createInitializePermanentDelegateInstruction,
createMintToCheckedInstruction,
createTransferCheckedInstruction,
ExtensionType,
getAccount,
getAssociatedTokenAddressSync,
getMint,
getMintLen,
getPermanentDelegate,
TOKEN_2022_PROGRAM_ID
} from "@solana/spl-token";
const connection = new Connection("http://localhost:8899", "confirmed");
const latestBlockhash = await connection.getLatestBlockhash();
const feePayer = Keypair.generate();
const owner = Keypair.generate();
const delegate = Keypair.generate();
const recipient = Keypair.generate();
const airdropSignature = await connection.requestAirdrop(
feePayer.publicKey,
5 * LAMPORTS_PER_SOL
);
await connection.confirmTransaction({
blockhash: latestBlockhash.blockhash,
lastValidBlockHeight: latestBlockhash.lastValidBlockHeight,
signature: airdropSignature
});
const extensions = [ExtensionType.PermanentDelegate];
const mint = Keypair.generate();
const mintLength = getMintLen(extensions);
const mintRent = await connection.getMinimumBalanceForRentExemption(mintLength);
const sourceToken = getAssociatedTokenAddressSync(
mint.publicKey,
owner.publicKey,
false,
TOKEN_2022_PROGRAM_ID,
ASSOCIATED_TOKEN_PROGRAM_ID
);
const destinationToken = getAssociatedTokenAddressSync(
mint.publicKey,
recipient.publicKey,
false,
TOKEN_2022_PROGRAM_ID,
ASSOCIATED_TOKEN_PROGRAM_ID
);
const createMintAccountInstruction = SystemProgram.createAccount({
fromPubkey: feePayer.publicKey, // Account funding the new mint account.
newAccountPubkey: mint.publicKey, // New mint account to create.
space: mintLength, // Account size in bytes for the mint plus PermanentDelegate.
lamports: mintRent, // Lamports funding the mint account rent.
programId: TOKEN_2022_PROGRAM_ID // Program that owns the mint account.
});
const initializePermanentDelegateInstruction =
createInitializePermanentDelegateInstruction(
mint.publicKey, // Mint account that stores the PermanentDelegate extension.
delegate.publicKey, // Permanent delegate authorized for all token accounts for the mint.
TOKEN_2022_PROGRAM_ID // Token program that owns the mint.
);
const initializeMintInstruction = createInitializeMintInstruction(
mint.publicKey, // Mint account to initialize.
0, // Number of decimals for the token.
feePayer.publicKey, // Authority allowed to mint new tokens.
feePayer.publicKey, // Authority allowed to freeze token accounts.
TOKEN_2022_PROGRAM_ID // Program that owns the mint account.
);
await sendAndConfirmTransaction(
connection,
new Transaction().add(
createMintAccountInstruction,
initializePermanentDelegateInstruction,
initializeMintInstruction
),
[feePayer, mint],
{
commitment: "confirmed"
}
);
await sendAndConfirmTransaction(
connection,
new Transaction().add(
createAssociatedTokenAccountInstruction(
feePayer.publicKey, // Account funding the associated token account creation.
sourceToken, // Associated token account address to create.
owner.publicKey, // Owner of the source token account.
mint.publicKey, // Mint for the associated token account.
TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
ASSOCIATED_TOKEN_PROGRAM_ID // Associated Token Program that creates the account.
),
createAssociatedTokenAccountInstruction(
feePayer.publicKey, // Account funding the associated token account creation.
destinationToken, // Associated token account address to create.
recipient.publicKey, // Owner of the destination token account.
mint.publicKey, // Mint for the associated token account.
TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
ASSOCIATED_TOKEN_PROGRAM_ID // Associated Token Program that creates the account.
),
createMintToCheckedInstruction(
mint.publicKey, // Mint account that issues the tokens.
sourceToken, // Token account receiving the newly minted tokens.
feePayer.publicKey, // Signer authorized to mint new tokens.
1, // Token amount in base units.
0, // Decimals defined on the mint.
[], // Additional multisig signers.
TOKEN_2022_PROGRAM_ID // Token program that owns the mint and token account.
)
),
[feePayer],
{
commitment: "confirmed"
}
);
await sendAndConfirmTransaction(
connection,
new Transaction().add(
createTransferCheckedInstruction(
sourceToken, // Token account sending the transfer.
mint.publicKey, // Mint with the permanent delegate configuration.
destinationToken, // Token account receiving the transfer.
delegate.publicKey, // Permanent delegate signing the transfer.
1, // Token amount in base units.
0, // Decimals defined on the mint.
[], // Additional multisig signers.
TOKEN_2022_PROGRAM_ID // Token program that processes the transfer.
)
),
[feePayer, delegate],
{
commitment: "confirmed"
}
);
const destinationAccount = await getAccount(
connection,
destinationToken,
"confirmed",
TOKEN_2022_PROGRAM_ID
);
const mintAccount = await getMint(
connection,
mint.publicKey,
"confirmed",
TOKEN_2022_PROGRAM_ID
);
const permanentDelegate = getPermanentDelegate(mintAccount);
console.log("Mint Address:", mint.publicKey.toBase58());
console.log("Destination Amount:", destinationAccount.amount.toString());
console.log("Permanent Delegate Extension:", permanentDelegate);
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::{
signature::{Keypair, Signer},
transaction::Transaction,
};
use solana_system_interface::instruction::create_account;
use spl_associated_token_account_interface::{
address::get_associated_token_address_with_program_id,
instruction::create_associated_token_account,
};
use spl_token_2022_interface::{
extension::{
permanent_delegate::PermanentDelegate, BaseStateWithExtensions, ExtensionType,
StateWithExtensions,
},
instruction::{
initialize_mint, initialize_permanent_delegate, mint_to_checked, transfer_checked,
},
state::{Account, Mint},
ID as TOKEN_2022_PROGRAM_ID,
};
#[tokio::main]
async fn main() -> Result<()> {
let client = RpcClient::new_with_commitment(
String::from("http://localhost:8899"),
CommitmentConfig::confirmed(),
);
let fee_payer = Keypair::new();
let owner = Keypair::new();
let delegate = Keypair::new();
let recipient = Keypair::new();
let airdrop_signature = client
.request_airdrop(&fee_payer.pubkey(), 5_000_000_000)
.await?;
loop {
let confirmed = client.confirm_transaction(&airdrop_signature).await?;
if confirmed {
break;
}
}
let mint = Keypair::new();
let mint_space =
ExtensionType::try_calculate_account_len::<Mint>(&[ExtensionType::PermanentDelegate])?;
let mint_rent = client
.get_minimum_balance_for_rent_exemption(mint_space)
.await?;
let create_mint_account_instruction = create_account(
&fee_payer.pubkey(), // Account funding the new mint account.
&mint.pubkey(), // New mint account to create.
mint_rent, // Lamports funding the mint account rent.
mint_space as u64, // Account size in bytes for the mint plus PermanentDelegate.
&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
);
let initialize_permanent_delegate_ix = initialize_permanent_delegate(
&TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.
&mint.pubkey(), // Mint account that stores the PermanentDelegate extension.
&delegate.pubkey(), // Permanent delegate authorized for all token accounts for the mint.
)?;
let initialize_mint_instruction = initialize_mint(
&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
&mint.pubkey(), // Mint account to initialize.
&fee_payer.pubkey(), // Authority allowed to mint new tokens.
Some(&fee_payer.pubkey()), // Authority allowed to freeze token accounts.
0, // Number of decimals for the token.
)?;
let create_mint_transaction = Transaction::new_signed_with_payer(
&[
create_mint_account_instruction,
initialize_permanent_delegate_ix,
initialize_mint_instruction,
],
Some(&fee_payer.pubkey()),
&[&fee_payer, &mint],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&create_mint_transaction)
.await?;
let source_token = get_associated_token_address_with_program_id(
&owner.pubkey(),
&mint.pubkey(),
&TOKEN_2022_PROGRAM_ID,
);
let destination_token = get_associated_token_address_with_program_id(
&recipient.pubkey(),
&mint.pubkey(),
&TOKEN_2022_PROGRAM_ID,
);
let create_token_accounts_transaction = Transaction::new_signed_with_payer(
&[
create_associated_token_account(
&fee_payer.pubkey(), // Account funding the associated token account creation.
&owner.pubkey(), // Owner of the source token account.
&mint.pubkey(), // Mint for the associated token account.
&TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
),
create_associated_token_account(
&fee_payer.pubkey(), // Account funding the associated token account creation.
&recipient.pubkey(), // Owner of the destination token account.
&mint.pubkey(), // Mint for the associated token account.
&TOKEN_2022_PROGRAM_ID, // Token program that owns the token account.
),
mint_to_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that owns the mint and token account.
&mint.pubkey(), // Mint account that issues the tokens.
&source_token, // Token account receiving the newly minted tokens.
&fee_payer.pubkey(), // Signer authorized to mint new tokens.
&[&fee_payer.pubkey()], // Additional multisig signers.
1, // Token amount in base units.
0, // Decimals defined on the mint.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&create_token_accounts_transaction)
.await?;
let transfer_transaction = Transaction::new_signed_with_payer(
&[
transfer_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that processes the transfer.
&source_token, // Token account sending the transfer.
&mint.pubkey(), // Mint with the permanent delegate configuration.
&destination_token, // Token account receiving the transfer.
&delegate.pubkey(), // Permanent delegate signing the transfer.
&[&delegate.pubkey()], // Additional multisig signers.
1, // Token amount in base units.
0, // Decimals defined on the mint.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer, &delegate],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&transfer_transaction)
.await?;
let destination_account = client.get_account(&destination_token).await?;
let destination_state =
StateWithExtensions::<Account>::unpack(&destination_account.data)?;
let mint_account = client.get_account(&mint.pubkey()).await?;
let mint_state = StateWithExtensions::<Mint>::unpack(&mint_account.data)?;
let permanent_delegate = mint_state.get_extension::<PermanentDelegate>()?;
println!("Mint Address: {}", mint.pubkey());
println!(
"Destination Amount: {}",
u64::from(destination_state.base.amount)
);
println!("Permanent Delegate Extension: {:?}", permanent_delegate);
Ok(())
}
Console
Click to execute the code.

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