Solana Anchor:带有PDA的CPI
Solana Anchor:带有PDA的CPI
提问于 2022-10-04 07:31:37
我正试图创建一个以我的程序为权威的铸币厂，我正在努力使我的CPI呼叫正确。
下面是我到目前为止所拥有的一个玩具例子：
use anchor_lang::prelude::*;
use anchor_spl::token::{
self, set_authority, spl_token::instruction::AuthorityType, SetAuthority, Token,
};
use program::MintTest;
declare_id!("Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS");
#[program]
pub mod mint_test {
use super::*;
pub fn initialize(ctx: Context<Initialize>) -> Result<()> {
let bump = *ctx.bumps.get("mint").unwrap();
let seeds = vec![bump];
let seeds = vec![b"some-seed".as_ref(), seeds.as_slice()];
let seeds = vec![seeds.as_slice()];
let seeds = seeds.as_slice(); // ❓ slightly unrelated but I'd love to understand why all this nesting is required
let cpi_program = ctx.accounts.token_program.to_account_info();
let cpi_accounts = SetAuthority {
account_or_mint: ctx.accounts.mint.to_account_info(),
current_authority: ctx.accounts.program.to_account_info(),
};
let cpi_ctx = CpiContext::new_with_signer(cpi_program, cpi_accounts, seeds);
set_authority(cpi_ctx, AuthorityType::MintTokens, None)?; // ❌ This fails
Ok(())
}
}
#[derive(Accounts)]
pub struct Initialize<'info> {
#[account(
init,
payer = signer,
mint::decimals = 0,
mint::authority = program,
seeds = [b"some-seed".as_ref()],
bump,
)]
pub mint: Account<'info, token::Mint>,
#[account(mut)]
pub signer: Signer<'info>,
pub token_program: Program<'info, Token>,
pub system_program: Program<'info, System>,
pub rent: Sysvar<'info, Rent>,
pub program: Program<'info, MintTest>,
}薄荷的创建是正确的，但是任何CPI调用都会在Error: failed to send transaction: Transaction simulation failed: Error processing Instruction 0: Cross-program invocation with unauthorized signer or writable account中失败(set_authority只是一个例子，我尝试了其他CPI，比如mint_to，但没有成功)。
如果我把TX的签字人设置为权威的话，它确实有效，所以我认为我对签名者的种子做了一些错误的事情，但我就是搞不明白，我已经被困在这个问题上好几个小时了。
这也是我的TS测试：
import * as anchor from "@project-serum/anchor";
import { Program } from "@project-serum/anchor";
import { MintTest } from "../target/types/mint_test";
describe("mint-test", () => {
anchor.setProvider(anchor.AnchorProvider.env());
const program = anchor.workspace.MintTest as Program<MintTest>;
it("Is initialized!", async () => {
const [mint] = await anchor.web3.PublicKey.findProgramAddress(
[Buffer.from("some-seed")],
program.programId
);
const tx = await program.methods
.initialize()
.accounts({
mint,
program: program.programId,
})
.rpc();
console.log("Your transaction signature", tx);
});
});预先感谢您的帮助
回答 2
Stack Overflow用户
回答已采纳
发布于 2022-10-04 16:02:54
所以，我对这一切的理解似乎有点过激了。一个程序不能签署，所以我们的程序不能成为我们造币厂的权威。
但是，我们可以指定PDA作为我们造币厂的所有者，并使用用于查找PDA地址的种子来“签名”指令。
以下工作：
use anchor_lang::prelude::*;
use anchor_spl::token::{
self, set_authority, spl_token::instruction::AuthorityType, SetAuthority, Token,
};
declare_id!("Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS");
#[program]
pub mod mint_test {
use super::*;
pub fn initialize(ctx: Context<Initialize>) -> Result<()> {
let bump = *ctx.bumps.get("auth").unwrap();
let seeds = vec![bump];
let seeds = vec![b"auth".as_ref(), seeds.as_slice()];
let seeds = vec![seeds.as_slice()];
let seeds = seeds.as_slice();
let cpi_program = ctx.accounts.token_program.to_account_info();
let cpi_accounts = SetAuthority {
account_or_mint: ctx.accounts.mint.to_account_info(),
current_authority: ctx.accounts.auth.to_account_info(),
};
let cpi_ctx = CpiContext::new_with_signer(cpi_program, cpi_accounts, seeds);
set_authority(cpi_ctx, AuthorityType::MintTokens, None)?;
Ok(())
}
}
#[account]
pub struct Auth {}
#[derive(Accounts)]
pub struct Initialize<'info> {
#[account(
init,
space = 8,
payer = signer,
seeds = [b"auth".as_ref()],
bump,
)]
pub auth: Account<'info, Auth>,
#[account(
init,
payer = signer,
mint::decimals = 0,
mint::authority = auth,
seeds = [b"some-seed".as_ref()],
bump,
)]
pub mint: Account<'info, token::Mint>,
#[account(mut)]
pub signer: Signer<'info>,
pub token_program: Program<'info, Token>,
pub system_program: Program<'info, System>,
pub rent: Sysvar<'info, Rent>,
}而测试：
import * as anchor from "@project-serum/anchor";
import { Program } from "@project-serum/anchor";
import { MintTest } from "../target/types/mint_test";
describe("mint-test", () => {
anchor.setProvider(anchor.AnchorProvider.env());
const program = anchor.workspace.MintTest as Program<MintTest>;
it("Is initialized!", async () => {
const [auth] = await anchor.web3.PublicKey.findProgramAddress(
[Buffer.from("auth")],
program.programId
);
const [mint] = await anchor.web3.PublicKey.findProgramAddress(
[Buffer.from("some-seed")],
program.programId
);
const tx = await program.methods
.initialize()
.accounts({
mint,
auth,
})
.rpc();
console.log("Your transaction signature", tx);
});
});希望这对某人有帮助。
Stack Overflow用户
发布于 2022-11-13 17:03:45
正如在这个答案https://stackoverflow.com/a/73950605/20494156中所述，程序不能单独签名，唯一的方法是使用PDA。有关作为签名者的程序的更多信息可以在这里找到：https://book.anchor-lang.com/anchor_in_depth/PDAs.html#programs-as-signers
只想添加以下关于种子嵌套的内部注释问题，这个答案可能会有帮助：https://solana.stackexchange.com/questions/3002/can-there-be-two-signers-in-an-anchor-cpi。
基本上，您可以发送多个种子数组，以防出现多个PDA签名。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/73944428
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