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//! Instruction types
use {
pinocchio::{
program_error::ProgramError,
pubkey::{Pubkey, PUBKEY_BYTES},
},
shank::ShankInstruction,
};
/// Instructions supported by the program whitelist program.
#[repr(C)]
#[derive(Clone, Debug, PartialEq, ShankInstruction)]
pub enum ProgramWhitelistInstruction {
/// Initializes the program whitelist account, setting its initial state
/// with the initial authority.
///
/// Accounts expected by this instruction:
///
/// 0. `[writable]` The whitelist account to initialize
/// 1. `[signer]` The authority that will control the whitelist
/// 2. `[signer]` Account that will pay for the account creation
/// 3. `[]` The system program
#[account(
0,
writable,
name = "whitelist_account",
desc = "The whitelist account to initialize"
)]
#[account(
1,
signer,
name = "whitelist_authority",
desc = "The authority that will control the whitelist"
)]
#[account(
2,
signer,
name = "funder",
desc = "Account that will pay for the account creation"
)]
#[account(3, name = "system_program", desc = "System program")]
CreateWhitelist {},
/// Accepts the pending authority transfer for the program whitelist. The
/// `pending_whitelist_authority` must sign this instruction to assume
/// authority over the whitelist.
///
/// Accounts expected by this instruction:
///
/// 0. `[writable]` The whitelist account
/// 1. `[signer]` The pending whitelist authority
#[account(
0,
writable,
name = "whitelist_account",
desc = "The whitelist account"
)]
#[account(
1,
signer,
name = "pending_whitelist_authority",
desc = "The pending whitelist authority"
)]
AcceptAuthorityTransfer,
/// Proposes a new authority for the program whitelist. The current
/// `whitelist_authority` must sign this instruction. The proposed
/// `new_authority` must then sign an `AcceptAuthorityTransfer`
/// instruction to finalize the transfer.
///
/// Accounts expected by this instruction:
///
/// 0. `[writable]` The whitelist account
/// 1. `[signer]` The current whitelist authority
#[account(
0,
writable,
name = "whitelist_account",
desc = "The whitelist account"
)]
#[account(
1,
signer,
name = "whitelist_authority",
desc = "The whitelist authority"
)]
InitiateAuthorityTransfer { new_authority: Pubkey },
/// Cancels a pending authority transfer for the program whitelist. The
/// current `whitelist_authority` must sign this instruction.
///
/// Accounts expected by this instruction:
///
/// 0. `[writable]` The whitelist account
/// 1. `[signer]` The current whitelist authority
#[account(
0,
writable,
name = "whitelist_account",
desc = "The whitelist account"
)]
#[account(
1,
signer,
name = "whitelist_authority",
desc = "The whitelist authority"
)]
CancelAuthorityTransfer {},
/// Adds an address to the program whitelist or unrevokes a previously
/// revoked address. If the `whitelist_entry_account` does not exist,
/// this instruction creates and initializes it. If the account already
/// exists and is marked as revoked, this instruction marks it as active
/// again. The `whitelist_authority` must sign.
///
/// Accounts expected by this instruction:
///
/// 0. `[]` The whitelist account (Used for validation/derivation)
/// 1. `[signer]` The whitelist authority
/// 2. `[writable]` The whitelist entry account to be created/initialized
/// or updated
/// 3. `[writable, signer]` Payer account (must be a system account)
/// 4. `[]` System program
#[account(0, name = "whitelist_account", desc = "The whitelist account")]
#[account(
1,
signer,
name = "whitelist_authority",
desc = "The whitelist authority"
)]
#[account(
2,
writable,
name = "whitelist_entry_account",
desc = "The whitelist entry account"
)]
#[account(
3,
writable,
signer,
name = "payer",
desc = "Payer account (must be a system account)"
)]
#[account(4, name = "system_program", desc = "System program")]
AddEntry { program_authority: Pubkey },
/// Closes a specific whitelist entry account, transferring its rent
/// lamports to a designated destination account. The `whitelist_authority`
/// must sign this instruction.
///
/// Accounts expected by this instruction:
///
/// 0. `[]` The whitelist account (Used for validation)
/// 1. `[signer]` The whitelist authority
/// 2. `[writable]` The whitelist entry account to close
/// 3. `[writable]` The destination account for reclaimed lamports
/// 4. `[]` System program
#[account(0, name = "whitelist_account", desc = "The whitelist account")]
#[account(
1,
signer,
name = "whitelist_authority",
desc = "The whitelist authority"
)]
#[account(
2,
writable,
name = "whitelist_entry_account",
desc = "The whitelist entry account to close"
)]
#[account(
3,
writable,
name = "destination_account",
desc = "The destination account for reclaimed lamports"
)]
#[account(4, name = "system_program", desc = "System program")]
RemoveEntry { program_authority: Pubkey },
}
impl ProgramWhitelistInstruction {
/// Unpack a program whitelist instruction from a byte slice.
pub fn unpack(input: &[u8]) -> Result<Self, ProgramError> {
// Use the pattern matching style from the example
match input.split_first() {
Some((&0, [])) => Ok(Self::CreateWhitelist {}),
Some((&1, remaining)) if remaining.len() == PUBKEY_BYTES => {
let new_authority = Pubkey::try_from(remaining).unwrap();
Ok(Self::InitiateAuthorityTransfer { new_authority })
}
Some((&2, [])) => Ok(Self::AcceptAuthorityTransfer),
Some((&3, [])) => Ok(Self::CancelAuthorityTransfer {}),
Some((&4, remaining)) if remaining.len() == PUBKEY_BYTES => {
let program_authority = Pubkey::try_from(remaining).unwrap();
Ok(Self::AddEntry { program_authority })
}
Some((&5, remaining)) if remaining.len() == PUBKEY_BYTES => {
let program_authority = Pubkey::try_from(remaining).unwrap();
Ok(Self::RemoveEntry { program_authority })
}
_ => Err(ProgramError::InvalidInstructionData),
}
}
}