الحرق المصرَّح به

ما هو الحرق المصرَّح به؟

يتطلب امتداد سك PermissionedBurnConfig الخاص بـ Token Extension Program تعيين سلطة حرق مُهيَّأة لتوقيع كل عملية حرق للسك توقيعًا مشتركًا.

طالما أن سلطة الحرق مُعيَّنة:

  • تفشل تعليمات Burn و BurnChecked القياسية بخطأ TokenError::InvalidInstruction.
  • يجب أن تستخدم عمليات الحرق PermissionedBurnInstruction::Burn أو PermissionedBurnInstruction::BurnChecked، موقَّعةً من كلٍّ من سلطة الحرق ومالك token account أو مفوَّضه.

سلطة الحرق هي موقِّع مشارك، وليست بديلًا عن المالك. لا تستطيع السلطة وحدها حرق الرموز المميزة من token account شخص آخر، كما لا يستطيع مالك token account الحرق دون توقيع السلطة. كما يجب على المفوَّض الدائم استخدام تعليمات الحرق المصرَّح به والحصول على التوقيع المشترك لسلطة الحرق.

يتيح هذا للمُصدِر الحفاظ على تزامن إجمالي الرموز المميزة مع سجل خارج السلسلة، كأصل مُرمَّز يجب أن يظل مدعومًا بنسبة 1:1، وذلك بمنع المالكين من حرق الرموز المميزة بشكل انفرادي.

يمكن تدوير سلطة الحرق لاحقًا باستخدام SetAuthority عبر AuthorityType::PermissionedBurn. يؤدي تعيين السلطة إلى None إلى تعطيل الحرق المصرَّح به وإعادة تفعيل تعليمات الحرق القياسية. تبقى بيانات الامتداد نفسها على السك.

يتضمن validator الاختباري المحلي أيضًا إصدارًا قديمًا من Token-2022، لذا لتشغيل الأمثلة الواردة في هذه الصفحة، قم بتحميل برنامج الإصدار v11.0.0 من devnet إلى validator الاختباري الخاص بك:

Terminal
solana program dump -u devnet TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb token_2022.so
solana-test-validator --reset --bpf-program TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb token_2022.so

كيفية إنشاء Mint وحرق بإذن

لإنشاء mint مع حرق مقيّد بالأذونات وحرق الرموز:

  1. احسب حجم mint account والrent المطلوب للـ mint وامتداد PermissionedBurnConfig.
  2. أنشئ mint account باستخدام CreateAccount، وهيِّئ PermissionedBurnConfig، ثم هيِّئ الـ mint باستخدام InitializeMint.
  3. أنشئ token account واسكّ الرموز.
  4. قم بالحرق باستخدام PermissionedBurnInstruction::BurnChecked موقَّعًا من قِبل مالك token account وسلطة الحرق.
  5. يمكنك اختياريًا تعطيل الحرق المقيّد بالأذونات باستخدام SetAuthority عبر AuthorityType::PermissionedBurn وصلاحية None، مما يُعيد تفعيل تعليمات الحرق القياسية. تُوضّح أمثلة الكود الكاملة أدناه هذه الخطوة.

احسب حجم الحساب

احسب حجم mint account للـ mint الأساسي مضافًا إليه امتداد PermissionedBurnConfig. هذا هو الحجم المستخدم في CreateAccount.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));

احسب الـ rent

احسب الـ rent باستخدام الحجم المطلوب للـ mint مضافًا إليه امتداد PermissionedBurnConfig.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();

أنشئ mint account

أنشئ mint account بالمساحة والlamports المحسوبة.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer,
newAccount: mint,
lamports: mintRent,
space: mintSpace,
programAddress: TOKEN_2022_PROGRAM_ADDRESS
})
]);

هيِّئ PermissionedBurn

هيِّئ امتداد PermissionedBurnConfig على الـ mint مع سلطة الحرق.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer,
newAccount: mint,
lamports: mintRent,
space: mintSpace,
programAddress: TOKEN_2022_PROGRAM_ADDRESS
}),
getInitializePermissionedBurnInstruction({
mint: mint.address,
authority: burnAuthority.address
})
]);

هيِّئ الـ mint

هيِّئ الـ mint باستخدام InitializeMint في نفس المعاملة.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer,
newAccount: mint,
lamports: mintRent,
space: mintSpace,
programAddress: TOKEN_2022_PROGRAM_ADDRESS
}),
getInitializePermissionedBurnInstruction({
mint: mint.address,
authority: burnAuthority.address
}),
getInitializeMintInstruction({
mint: mint.address,
decimals: 0,
mintAuthority: client.payer.address,
freezeAuthority: client.payer.address
})
]);

إنشاء token account وسك الرموز

أنشئ token account للدافع واسك الرموز إليه.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer,
newAccount: mint,
lamports: mintRent,
space: mintSpace,
programAddress: TOKEN_2022_PROGRAM_ADDRESS
}),
getInitializePermissionedBurnInstruction({
mint: mint.address,
authority: burnAuthority.address
}),
getInitializeMintInstruction({
mint: mint.address,
decimals: 0,
mintAuthority: client.payer.address,
freezeAuthority: client.payer.address
})
]);
const [sourceToken] = await findAssociatedTokenPda({
mint: mint.address,
owner: client.payer.address,
tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});
await client.sendTransaction([
await getCreateAssociatedTokenInstructionAsync({
payer: client.payer,
mint: mint.address,
owner: client.payer.address
}),
getMintToCheckedInstruction({
mint: mint.address,
token: sourceToken,
mintAuthority: client.payer,
amount: 2n,
decimals: 0
})
]);

الحرق باستخدام صلاحية الحرق

احرق الرموز باستخدام PermissionedBurnInstruction::BurnChecked موقَّعًا من قِبَل كلٍّ من مالك token account وصلاحية الحرق.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer,
newAccount: mint,
lamports: mintRent,
space: mintSpace,
programAddress: TOKEN_2022_PROGRAM_ADDRESS
}),
getInitializePermissionedBurnInstruction({
mint: mint.address,
authority: burnAuthority.address
}),
getInitializeMintInstruction({
mint: mint.address,
decimals: 0,
mintAuthority: client.payer.address,
freezeAuthority: client.payer.address
})
]);
const [sourceToken] = await findAssociatedTokenPda({
mint: mint.address,
owner: client.payer.address,
tokenProgram: TOKEN_2022_PROGRAM_ADDRESS
});
await client.sendTransaction([
await getCreateAssociatedTokenInstructionAsync({
payer: client.payer,
mint: mint.address,
owner: client.payer.address
}),
getMintToCheckedInstruction({
mint: mint.address,
token: sourceToken,
mintAuthority: client.payer,
amount: 2n,
decimals: 0
})
]);
await client.sendTransaction([
getPermissionedBurnCheckedInstruction({
account: sourceToken,
mint: mint.address,
permissionedBurnAuthority: burnAuthority,
authority: client.payer,
amount: 1n,
decimals: 0
})
]);

احسب حجم الحساب

احسب حجم mint account للـ mint الأساسي مضافًا إليه امتداد PermissionedBurnConfig. هذا هو الحجم المستخدم في CreateAccount.

احسب الـ rent

احسب الـ rent باستخدام الحجم المطلوب للـ mint مضافًا إليه امتداد PermissionedBurnConfig.

أنشئ mint account

أنشئ mint account بالمساحة والlamports المحسوبة.

هيِّئ PermissionedBurn

هيِّئ امتداد PermissionedBurnConfig على الـ mint مع سلطة الحرق.

هيِّئ الـ mint

هيِّئ الـ mint باستخدام InitializeMint في نفس المعاملة.

إنشاء token account وسك الرموز

أنشئ token account للدافع واسك الرموز إليه.

الحرق باستخدام صلاحية الحرق

احرق الرموز باستخدام PermissionedBurnInstruction::BurnChecked موقَّعًا من قِبَل كلٍّ من مالك token account وصلاحية الحرق.

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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));

Instruction Order

يجب أن يسبق PermissionedBurnInstruction::Initialize InitializeMint. يجب تضمين CreateAccount و_rsPermissionedBurnInstruction::Initialize_ و_rsInitializeMint_ في نفس المعاملة.

مرجع المصدر

العنصرالوصفالمصدر
PermissionedBurnConfigامتداد للسك يخزّن الصلاحية المطلوبة للتوقيع المشترك على كل عملية حرق للسك.المصدر
PermissionedBurnInstruction::Initializeتعليمة تُهيئ إعدادات الحرق المُقيَّد قبل InitializeMint.المصدر
PermissionedBurnInstruction::Burnتعليمة حرق تتطلب توقيعات من صلاحية الحرق ومالك token account أو المفوَّض.المصدر
PermissionedBurnInstruction::BurnCheckedتعليمة حرق مع فحص الكسور العشرية تستخدم نفس الحسابات المستخدمة في PermissionedBurnInstruction::Burn.المصدر
AuthorityType::PermissionedBurnمُميِّز الصلاحية المستخدَم مع SetAuthority لتدوير صلاحية الحرق أو تعطيلها على سك معيَّن.المصدر
process_initializeمنطق المعالج الذي يُهيئ PermissionedBurnConfig على سك غير مُهيَّأ ويخزّن صلاحية الحرق.المصدر
process_burnمنطق المعالج الذي يرفض عمليات الحرق القياسية عند تعيين صلاحية الحرق ويتحقق من توقيع الصلاحية.المصدر
process_set_authorityمنطق المعالج الذي يتحقق من صحة صلاحية الحرق ويُدوِّرها عند استخدام AuthorityType::PermissionedBurn.المصدر

TypeScript

المثال أدناه باستخدام Kit يستخدم التعليمات المُولَّدة مباشرةً. حزمة @solana/spl-token القديمة المنشورة لا تتضمن دعم الحرق المقيَّد بالصلاحيات بعد، لذا لم يتم تضمين مثال قديم.

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 {
AuthorityType,
extension,
fetchMint,
fetchToken,
findAssociatedTokenPda,
getBurnCheckedInstruction,
getCreateAssociatedTokenInstructionAsync,
getInitializeMintInstruction,
getInitializePermissionedBurnInstruction,
getMintSize,
getMintToCheckedInstruction,
getPermissionedBurnCheckedInstruction,
getSetAuthorityInstruction,
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 burnAuthority = await generateKeyPairSigner();
const permissionedBurnExtension = extension("PermissionedBurn", {
authority: burnAuthority.address
});
const mintSpace = BigInt(getMintSize([permissionedBurnExtension]));
const mintRent = await client.rpc
.getMinimumBalanceForRentExemption(mintSpace)
.send();
await client.sendTransaction([
getCreateAccountInstruction({
payer: client.payer, // Account funding account creation.
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 PermissionedBurnConfig.
programAddress: TOKEN_2022_PROGRAM_ADDRESS // Program that owns the mint account.
}),
getInitializePermissionedBurnInstruction({
mint: mint.address, // Mint account that stores the PermissionedBurnConfig extension.
authority: burnAuthority.address // Authority required to co-sign every burn 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: client.payer.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: client.payer.address // Owner of the associated 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: 2n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
let standardBurnFailure: string | undefined;
try {
await client.sendTransaction([
getBurnCheckedInstruction({
account: sourceToken, // Token account to burn from.
mint: mint.address, // Mint with the permissioned burn configuration.
authority: client.payer, // Token account owner signing the burn.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
} catch (error) {
standardBurnFailure = error instanceof Error ? error.message : String(error);
}
if (!standardBurnFailure) {
throw new Error("Expected the standard burn to fail");
}
await client.sendTransaction([
getPermissionedBurnCheckedInstruction({
account: sourceToken, // Token account to burn from.
mint: mint.address, // Mint with the permissioned burn configuration.
permissionedBurnAuthority: burnAuthority, // Burn authority co-signing the burn.
authority: client.payer, // Token account owner signing the burn.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
await client.sendTransaction([
getSetAuthorityInstruction({
owned: mint.address, // Mint with the permissioned burn configuration.
owner: burnAuthority, // Current burn authority signing the update.
authorityType: AuthorityType.PermissionedBurn, // Authority type to update.
newAuthority: null // Setting the authority to None disables permissioned burning.
})
]);
await client.sendTransaction([
getBurnCheckedInstruction({
account: sourceToken, // Token account to burn from.
mint: mint.address, // Mint with permissioned burning disabled.
authority: client.payer, // Token account owner signing the burn.
amount: 1n, // Token amount in base units.
decimals: 0 // Decimals defined on the mint.
})
]);
const sourceAccount = await fetchToken(client.rpc, sourceToken);
const mintAccount = await fetchMint(client.rpc, mint.address);
const permissionedBurnConfig = (
unwrapOption(mintAccount.data.extensions) ?? []
).find((item) => isExtension("PermissionedBurn", item));
console.log("Mint Address:", mint.address);
console.log("Error From Failed Standard Burn:", standardBurnFailure);
console.log("Source Amount After Burns:", sourceAccount.data.amount);
console.log("Extension After Disable:", permissionedBurnConfig);

Rust

Rust
use anyhow::{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::{
permissioned_burn::{instruction as permissioned_burn_ix, PermissionedBurnConfig},
BaseStateWithExtensions, ExtensionType, StateWithExtensions,
},
instruction::{burn_checked, initialize_mint, mint_to_checked, set_authority, AuthorityType},
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 burn_authority = 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::PermissionedBurn])?;
let mint_rent = client
.get_minimum_balance_for_rent_exemption(mint_space)
.await?;
let create_mint_transaction = Transaction::new_signed_with_payer(
&[
create_account(
&fee_payer.pubkey(), // Account funding account creation.
&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 PermissionedBurnConfig.
&TOKEN_2022_PROGRAM_ID, // Program that owns the mint account.
),
permissioned_burn_ix::initialize(
&TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.
&mint.pubkey(), // Mint account that stores the PermissionedBurnConfig extension.
&burn_authority.pubkey(), // Authority required to co-sign every burn for the mint.
)?,
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.
)?,
],
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(
&fee_payer.pubkey(),
&mint.pubkey(),
&TOKEN_2022_PROGRAM_ID,
);
let create_token_account_transaction = Transaction::new_signed_with_payer(
&[
create_associated_token_account(
&fee_payer.pubkey(), // Account funding the associated token account creation.
&fee_payer.pubkey(), // Owner of the associated 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.
2, // 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_account_transaction)
.await?;
let standard_burn_ix = burn_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that processes the burn.
&source_token, // Token account to burn from.
&mint.pubkey(), // Mint with the permissioned burn configuration.
&fee_payer.pubkey(), // Token account owner signing the burn.
&[&fee_payer.pubkey()], // Additional multisig signers.
1, // Token amount in base units.
0, // Decimals defined on the mint.
)?;
let standard_burn_transaction = Transaction::new_signed_with_payer(
&[standard_burn_ix],
Some(&fee_payer.pubkey()),
&[&fee_payer],
client.get_latest_blockhash().await?,
);
let standard_burn_result = client
.simulate_transaction(&standard_burn_transaction)
.await?;
let standard_burn_failure = standard_burn_result
.value
.err
.ok_or_else(|| anyhow!("Expected the standard burn to fail"))?;
let permissioned_burn_instruction = permissioned_burn_ix::burn_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that processes the burn.
&source_token, // Token account to burn from.
&mint.pubkey(), // Mint with the permissioned burn configuration.
&burn_authority.pubkey(), // Burn authority co-signing the burn.
&fee_payer.pubkey(), // Token account owner signing the burn.
&[], // Additional multisig signers.
1, // Token amount in base units.
0, // Decimals defined on the mint.
)?;
let permissioned_burn_transaction = Transaction::new_signed_with_payer(
&[permissioned_burn_instruction],
Some(&fee_payer.pubkey()),
&[&fee_payer, &burn_authority],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&permissioned_burn_transaction)
.await?;
let disable_authority_transaction = Transaction::new_signed_with_payer(
&[
set_authority(
&TOKEN_2022_PROGRAM_ID, // Token program that owns the mint.
&mint.pubkey(), // Mint with the permissioned burn configuration.
None, // Setting the authority to None disables permissioned burning.
AuthorityType::PermissionedBurn, // Authority type to update.
&burn_authority.pubkey(), // Current burn authority signing the update.
&[], // Additional multisig signers.
)?,
],
Some(&fee_payer.pubkey()),
&[&fee_payer, &burn_authority],
client.get_latest_blockhash().await?,
);
client
.send_and_confirm_transaction(&disable_authority_transaction)
.await?;
let standard_burn_after_disable_transaction = Transaction::new_signed_with_payer(
&[
burn_checked(
&TOKEN_2022_PROGRAM_ID, // Token program that processes the burn.
&source_token, // Token account to burn from.
&mint.pubkey(), // Mint with permissioned burning disabled.
&fee_payer.pubkey(), // Token account owner signing the burn.
&[&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(&standard_burn_after_disable_transaction)
.await?;
let source_account = client.get_account(&source_token).await?;
let source_state = StateWithExtensions::<Account>::unpack(&source_account.data)?;
let mint_account = client.get_account(&mint.pubkey()).await?;
let mint_state = StateWithExtensions::<Mint>::unpack(&mint_account.data)?;
let permissioned_burn_config = mint_state.get_extension::<PermissionedBurnConfig>()?;
println!("Mint Address: {}", mint.pubkey());
println!(
"Error From Failed Standard Burn: {:?}",
standard_burn_failure
);
println!(
"Source Amount After Burns: {}",
u64::from(source_state.base.amount)
);
println!("Extension After Disable: {:?}", permissioned_burn_config);
Ok(())
}

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