solana@web3.js / 程序传输

Question

我正在尝试用 Solana 编写一个简单的程序，在用户批准后运行并将给定数量的 SOL 转移到程序的所有者帐户中。

从 JS 方面，我基于 Solana 存储库中的 HelloWorld 示例

        ...
        const secretKeyString = await fs.readFile(filePath, {encoding: 'utf8'});
        const secretKey = Uint8Array.from(JSON.parse(secretKeyString))
        const keypair = Keypair.fromSecretKey(secretKey)

        const instruction = new TransactionInstruction({
            keys: [
              {pubkey: publicKey, isSigner: false, isWritable: true}, // from wallet
              {pubkey: keypair.publicKey, isSigner: false, isWritable: true} // from json file, program owner
            ],
            programId,
            data: Buffer.alloc(0)
          });

        const transaction = new Transaction().add(instruction);
        signature = await sendTransaction(transaction, connection);
        //toast('Transaction Sent');

在程序方面，我简单地使用了来自 Solana 存储库的 C 示例中的示例（未编辑）- 因此假设一切都很好

/**
 * @brief A program demonstrating the transfer of lamports
 */
#include <solana_sdk.h>

extern uint64_t transfer(SolParameters *params) {
  // As part of the program specification the first account is the source
  // account and the second is the destination account
  if (params->ka_num != 2) {
    return ERROR_NOT_ENOUGH_ACCOUNT_KEYS;
  }
  SolAccountInfo *source_info = &params->ka[0];
  SolAccountInfo *destination_info = &params->ka[1];

  // Withdraw five lamports from the source
  *source_info->lamports -= 100000000;
  // Deposit five lamports into the destination
  *destination_info->lamports += 100000000;

  return SUCCESS;
}

extern uint64_t entrypoint(const uint8_t *input) {
  SolAccountInfo accounts[2];
  SolParameters params = (SolParameters){.ka = accounts};

  if (!sol_deserialize(input, &params, SOL_ARRAY_SIZE(accounts))) {
    return ERROR_INVALID_ARGUMENT;
  }

  return transfer(&params);
}

然而，这一直失败并出现错误 ´-32003 交易创建失败。`

Answer 1

系统级别 SOL transfer 有一个约束，即 from 公钥必须是 系统拥有的帐户.这意味着程序或 PDA 拥有的帐户将失败，因为它们属于您的程序。 https://solanacookbook.com/references/accounts.html#transfer

仅当 from 公钥是 程序拥有的帐户 时，您的代码显示的 lamports 的传输才会发生。 https://solanacookbook.com/references/programs.html#transferring-lamports

solana@web3.js / 程序传输

solana@web3.js / program transfer

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