767 lines
25 KiB
Rust
767 lines
25 KiB
Rust
use crate::{
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config, id,
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stake_state::{Authorized, Lockup, StakeAccount, StakeAuthorize, StakeState},
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};
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use log::*;
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use num_derive::{FromPrimitive, ToPrimitive};
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use serde_derive::{Deserialize, Serialize};
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use solana_sdk::{
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account::{get_signers, KeyedAccount},
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clock::{Epoch, UnixTimestamp},
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instruction::{AccountMeta, Instruction, InstructionError, WithSigner},
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program_utils::{limited_deserialize, next_keyed_account, DecodeError},
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pubkey::Pubkey,
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system_instruction,
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sysvar::{self, clock::Clock, rent::Rent, stake_history::StakeHistory, Sysvar},
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};
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use thiserror::Error;
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/// Reasons the stake might have had an error
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#[derive(Error, Debug, Clone, PartialEq, FromPrimitive, ToPrimitive)]
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pub enum StakeError {
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#[error("not enough credits to redeem")]
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NoCreditsToRedeem,
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#[error("lockup has not yet expired")]
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LockupInForce,
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#[error("stake already deactivated")]
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AlreadyDeactivated,
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#[error("one re-delegation permitted per epoch")]
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TooSoonToRedelegate,
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#[error("split amount is more than is staked")]
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InsufficientStake,
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}
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impl<E> DecodeError<E> for StakeError {
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fn type_of() -> &'static str {
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"StakeError"
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}
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}
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#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
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pub enum StakeInstruction {
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/// `Initialize` a stake with Lockup and Authorized information
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///
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/// Expects 2 Accounts:
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/// 0 - Uninitialized StakeAccount
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/// 1 - Rent sysvar
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///
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/// Authorized carries pubkeys that must sign staker transactions
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/// and withdrawer transactions.
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/// Lockup carries information about withdrawal restrictions
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///
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Initialize(Authorized, Lockup),
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/// Authorize a key to manage stake or withdrawal
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/// requires Authorized::staker or Authorized::withdrawer
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/// signature, depending on which key's being updated
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///
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/// Expects 2 Accounts:
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/// 0 - StakeAccount to be updated with the Pubkey for
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/// authorization
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/// 1 - (reserved for future use) Clock sysvar Account that carries
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/// clock bank epoch
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Authorize(Pubkey, StakeAuthorize),
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/// `Delegate` a stake to a particular vote account
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/// requires Authorized::staker signature
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///
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/// Expects 4 Accounts:
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/// 0 - Initialized StakeAccount to be delegated
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/// 1 - VoteAccount to which this Stake will be delegated
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/// 2 - Clock sysvar Account that carries clock bank epoch
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/// 3 - Config Account that carries stake config
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///
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/// The entire balance of the staking account is staked. DelegateStake
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/// can be called multiple times, but re-delegation is delayed
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/// by one epoch
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///
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DelegateStake,
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/// Split u64 tokens and stake off a stake account into another stake
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/// account. Requires Authorized::staker signature and the
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/// signature of the split-off stake address.
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///
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/// The source stake must be either Initialized or a Stake.
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///
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/// Expects 2 Accounts:
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/// 0 - StakeAccount to be split
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/// 1 - Uninitialized StakeAcount that will take the split-off amount
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///
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Split(u64),
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/// Withdraw unstaked lamports from the stake account
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/// requires Authorized::withdrawer signature. If withdrawal
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/// is before lockup has expired, also requires signature
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/// of the lockup custodian.
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///
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/// Expects 4 Accounts:
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/// 0 - StakeAccount from which to withdraw
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/// 1 - Account to which the lamports will be transferred
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/// 2 - Syscall Account that carries epoch
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/// 3 - StakeHistory sysvar that carries stake warmup/cooldown history
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///
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/// The u64 is the portion of the Stake account balance to be withdrawn,
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/// must be <= StakeAccount.lamports - staked lamports.
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Withdraw(u64),
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/// Deactivates the stake in the account
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/// requires Authorized::staker signature
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///
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/// Expects 2 Accounts:
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/// 0 - Delegate StakeAccount
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/// 1 - Syscall Account that carries epoch
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///
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Deactivate,
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/// Set stake lockup
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/// requires Lockup::custodian signature
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///
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/// Expects 1 Account:
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/// 0 - initialized StakeAccount
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///
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SetLockup(LockupArgs),
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}
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#[derive(Default, Debug, Serialize, Deserialize, PartialEq, Clone, Copy)]
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pub struct LockupArgs {
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pub unix_timestamp: Option<UnixTimestamp>,
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pub epoch: Option<Epoch>,
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pub custodian: Option<Pubkey>,
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}
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fn initialize(stake_pubkey: &Pubkey, authorized: &Authorized, lockup: &Lockup) -> Instruction {
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Instruction::new(
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id(),
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&StakeInstruction::Initialize(*authorized, *lockup),
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vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(sysvar::rent::id(), false),
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],
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)
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}
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pub fn create_account_with_seed(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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base: &Pubkey,
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seed: &str,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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vec![
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system_instruction::create_account_with_seed(
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from_pubkey,
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stake_pubkey,
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base,
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seed,
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lamports,
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std::mem::size_of::<StakeState>() as u64,
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&id(),
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),
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initialize(stake_pubkey, authorized, lockup),
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]
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}
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pub fn create_account(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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vec![
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system_instruction::create_account(
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from_pubkey,
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stake_pubkey,
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lamports,
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std::mem::size_of::<StakeState>() as u64,
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&id(),
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),
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initialize(stake_pubkey, authorized, lockup),
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]
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}
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fn _split(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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lamports: u64,
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split_stake_pubkey: &Pubkey,
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) -> Instruction {
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let account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new(*split_stake_pubkey, false),
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]
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.with_signer(authorized_pubkey);
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Instruction::new(id(), &StakeInstruction::Split(lamports), account_metas)
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}
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pub fn split(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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lamports: u64,
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split_stake_pubkey: &Pubkey,
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) -> Vec<Instruction> {
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vec![
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system_instruction::allocate(split_stake_pubkey, std::mem::size_of::<StakeState>() as u64),
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system_instruction::assign(split_stake_pubkey, &id()),
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_split(
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stake_pubkey,
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authorized_pubkey,
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lamports,
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split_stake_pubkey,
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),
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]
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}
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pub fn split_with_seed(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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lamports: u64,
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split_stake_pubkey: &Pubkey, // derived using create_address_with_seed()
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base: &Pubkey, // base
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seed: &str, // seed
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) -> Vec<Instruction> {
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vec![
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system_instruction::allocate_with_seed(
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split_stake_pubkey,
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base,
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seed,
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std::mem::size_of::<StakeState>() as u64,
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&id(),
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),
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_split(
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stake_pubkey,
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authorized_pubkey,
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lamports,
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split_stake_pubkey,
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),
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]
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}
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pub fn create_account_and_delegate_stake(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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vote_pubkey: &Pubkey,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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let mut instructions = create_account(from_pubkey, stake_pubkey, authorized, lockup, lamports);
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instructions.push(delegate_stake(
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stake_pubkey,
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&authorized.staker,
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vote_pubkey,
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));
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instructions
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}
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pub fn create_account_with_seed_and_delegate_stake(
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from_pubkey: &Pubkey,
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stake_pubkey: &Pubkey,
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base: &Pubkey,
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seed: &str,
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vote_pubkey: &Pubkey,
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authorized: &Authorized,
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lockup: &Lockup,
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lamports: u64,
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) -> Vec<Instruction> {
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let mut instructions = create_account_with_seed(
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from_pubkey,
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stake_pubkey,
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base,
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seed,
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authorized,
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lockup,
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lamports,
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);
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instructions.push(delegate_stake(
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stake_pubkey,
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&authorized.staker,
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vote_pubkey,
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));
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instructions
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}
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pub fn authorize(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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new_authorized_pubkey: &Pubkey,
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stake_authorize: StakeAuthorize,
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) -> Instruction {
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let account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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]
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.with_signer(authorized_pubkey);
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Instruction::new(
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id(),
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&StakeInstruction::Authorize(*new_authorized_pubkey, stake_authorize),
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account_metas,
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)
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}
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pub fn delegate_stake(
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stake_pubkey: &Pubkey,
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authorized_pubkey: &Pubkey,
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vote_pubkey: &Pubkey,
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) -> Instruction {
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let account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(*vote_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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AccountMeta::new_readonly(sysvar::stake_history::id(), false),
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AccountMeta::new_readonly(crate::config::id(), false),
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]
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.with_signer(authorized_pubkey);
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Instruction::new(id(), &StakeInstruction::DelegateStake, account_metas)
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}
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pub fn withdraw(
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stake_pubkey: &Pubkey,
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withdrawer_pubkey: &Pubkey,
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to_pubkey: &Pubkey,
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lamports: u64,
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custodian_pubkey: Option<&Pubkey>,
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) -> Instruction {
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let mut account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new(*to_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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AccountMeta::new_readonly(sysvar::stake_history::id(), false),
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]
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.with_signer(withdrawer_pubkey);
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if let Some(custodian_pubkey) = custodian_pubkey {
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account_metas = account_metas.with_signer(custodian_pubkey)
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}
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Instruction::new(id(), &StakeInstruction::Withdraw(lamports), account_metas)
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}
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pub fn deactivate_stake(stake_pubkey: &Pubkey, authorized_pubkey: &Pubkey) -> Instruction {
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let account_metas = vec![
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AccountMeta::new(*stake_pubkey, false),
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AccountMeta::new_readonly(sysvar::clock::id(), false),
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]
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.with_signer(authorized_pubkey);
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Instruction::new(id(), &StakeInstruction::Deactivate, account_metas)
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}
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pub fn set_lockup(
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stake_pubkey: &Pubkey,
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lockup: &LockupArgs,
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custodian_pubkey: &Pubkey,
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) -> Instruction {
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let account_metas = vec![AccountMeta::new(*stake_pubkey, false)].with_signer(custodian_pubkey);
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Instruction::new(id(), &StakeInstruction::SetLockup(*lockup), account_metas)
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}
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pub fn process_instruction(
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_program_id: &Pubkey,
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keyed_accounts: &[KeyedAccount],
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data: &[u8],
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) -> Result<(), InstructionError> {
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trace!("process_instruction: {:?}", data);
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trace!("keyed_accounts: {:?}", keyed_accounts);
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let signers = get_signers(keyed_accounts);
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let keyed_accounts = &mut keyed_accounts.iter();
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let me = &next_keyed_account(keyed_accounts)?;
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match limited_deserialize(data)? {
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StakeInstruction::Initialize(authorized, lockup) => me.initialize(
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&authorized,
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&lockup,
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&Rent::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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),
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StakeInstruction::Authorize(authorized_pubkey, stake_authorize) => {
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me.authorize(&authorized_pubkey, stake_authorize, &signers)
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}
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StakeInstruction::DelegateStake => {
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let vote = next_keyed_account(keyed_accounts)?;
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me.delegate(
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&vote,
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&Clock::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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&StakeHistory::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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&config::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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&signers,
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)
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}
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StakeInstruction::Split(lamports) => {
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let split_stake = &next_keyed_account(keyed_accounts)?;
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me.split(lamports, split_stake, &signers)
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}
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StakeInstruction::Withdraw(lamports) => {
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let to = &next_keyed_account(keyed_accounts)?;
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me.withdraw(
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lamports,
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to,
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&Clock::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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&StakeHistory::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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&signers,
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)
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}
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StakeInstruction::Deactivate => me.deactivate(
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&Clock::from_keyed_account(next_keyed_account(keyed_accounts)?)?,
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&signers,
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),
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StakeInstruction::SetLockup(lockup) => me.set_lockup(&lockup, &signers),
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use bincode::serialize;
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use solana_sdk::{account::Account, rent::Rent, sysvar::stake_history::StakeHistory};
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use std::cell::RefCell;
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fn create_default_account() -> RefCell<Account> {
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RefCell::new(Account::default())
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}
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fn process_instruction(instruction: &Instruction) -> Result<(), InstructionError> {
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let accounts: Vec<_> = instruction
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.accounts
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.iter()
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.map(|meta| {
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RefCell::new(if sysvar::clock::check_id(&meta.pubkey) {
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sysvar::clock::Clock::default().create_account(1)
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} else if sysvar::rewards::check_id(&meta.pubkey) {
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sysvar::rewards::create_account(1, 0.0)
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} else if sysvar::stake_history::check_id(&meta.pubkey) {
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sysvar::stake_history::create_account(1, &StakeHistory::default())
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} else if config::check_id(&meta.pubkey) {
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config::create_account(0, &config::Config::default())
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} else if sysvar::rent::check_id(&meta.pubkey) {
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sysvar::rent::create_account(1, &Rent::default())
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} else {
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Account::default()
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})
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})
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.collect();
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{
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let keyed_accounts: Vec<_> = instruction
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.accounts
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.iter()
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.zip(accounts.iter())
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.map(|(meta, account)| KeyedAccount::new(&meta.pubkey, meta.is_signer, account))
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.collect();
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super::process_instruction(&Pubkey::default(), &keyed_accounts, &instruction.data)
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}
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}
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#[test]
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fn test_stake_process_instruction() {
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assert_eq!(
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process_instruction(&initialize(
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&Pubkey::default(),
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&Authorized::default(),
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&Lockup::default()
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)),
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Err(InstructionError::InvalidAccountData),
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);
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assert_eq!(
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process_instruction(&authorize(
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&Pubkey::default(),
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&Pubkey::default(),
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&Pubkey::default(),
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StakeAuthorize::Staker
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)),
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Err(InstructionError::InvalidAccountData),
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);
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assert_eq!(
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process_instruction(
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&split(
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&Pubkey::default(),
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&Pubkey::default(),
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100,
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&Pubkey::default()
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)[2]
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),
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Err(InstructionError::InvalidAccountData),
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);
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assert_eq!(
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process_instruction(
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&split_with_seed(
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&Pubkey::default(),
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&Pubkey::default(),
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100,
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&Pubkey::default(),
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&Pubkey::default(),
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"seed"
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)[1]
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),
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Err(InstructionError::InvalidAccountData),
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);
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assert_eq!(
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process_instruction(&delegate_stake(
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&Pubkey::default(),
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&Pubkey::default(),
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&Pubkey::default()
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)),
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Err(InstructionError::InvalidAccountData),
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);
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assert_eq!(
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process_instruction(&withdraw(
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&Pubkey::default(),
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&Pubkey::default(),
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&Pubkey::new_rand(),
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100,
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None,
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)),
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Err(InstructionError::InvalidAccountData),
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);
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assert_eq!(
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process_instruction(&deactivate_stake(&Pubkey::default(), &Pubkey::default())),
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Err(InstructionError::InvalidAccountData),
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);
|
|
assert_eq!(
|
|
process_instruction(&set_lockup(
|
|
&Pubkey::default(),
|
|
&LockupArgs::default(),
|
|
&Pubkey::default()
|
|
)),
|
|
Err(InstructionError::InvalidAccountData),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_stake_process_instruction_decode_bail() {
|
|
// these will not call stake_state, have bogus contents
|
|
|
|
// gets the "is_empty()" check
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[],
|
|
&serialize(&StakeInstruction::Initialize(
|
|
Authorized::default(),
|
|
Lockup::default()
|
|
))
|
|
.unwrap(),
|
|
),
|
|
Err(InstructionError::NotEnoughAccountKeys),
|
|
);
|
|
|
|
// no account for rent
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[KeyedAccount::new(
|
|
&Pubkey::default(),
|
|
false,
|
|
&create_default_account(),
|
|
)],
|
|
&serialize(&StakeInstruction::Initialize(
|
|
Authorized::default(),
|
|
Lockup::default()
|
|
))
|
|
.unwrap(),
|
|
),
|
|
Err(InstructionError::NotEnoughAccountKeys),
|
|
);
|
|
|
|
// rent fails to deserialize
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[
|
|
KeyedAccount::new(&Pubkey::default(), false, &create_default_account(),),
|
|
KeyedAccount::new(&sysvar::rent::id(), false, &create_default_account(),)
|
|
],
|
|
&serialize(&StakeInstruction::Initialize(
|
|
Authorized::default(),
|
|
Lockup::default()
|
|
))
|
|
.unwrap(),
|
|
),
|
|
Err(InstructionError::InvalidArgument),
|
|
);
|
|
|
|
// fails to deserialize stake state
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[
|
|
KeyedAccount::new(&Pubkey::default(), false, &create_default_account()),
|
|
KeyedAccount::new(
|
|
&sysvar::rent::id(),
|
|
false,
|
|
&RefCell::new(sysvar::rent::create_account(0, &Rent::default()))
|
|
)
|
|
],
|
|
&serialize(&StakeInstruction::Initialize(
|
|
Authorized::default(),
|
|
Lockup::default()
|
|
))
|
|
.unwrap(),
|
|
),
|
|
Err(InstructionError::InvalidAccountData),
|
|
);
|
|
|
|
// gets the first check in delegate, wrong number of accounts
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[KeyedAccount::new(
|
|
&Pubkey::default(),
|
|
false,
|
|
&create_default_account()
|
|
),],
|
|
&serialize(&StakeInstruction::DelegateStake).unwrap(),
|
|
),
|
|
Err(InstructionError::NotEnoughAccountKeys),
|
|
);
|
|
|
|
// gets the sub-check for number of args
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[KeyedAccount::new(
|
|
&Pubkey::default(),
|
|
false,
|
|
&create_default_account()
|
|
)],
|
|
&serialize(&StakeInstruction::DelegateStake).unwrap(),
|
|
),
|
|
Err(InstructionError::NotEnoughAccountKeys),
|
|
);
|
|
|
|
// gets the check non-deserialize-able account in delegate_stake
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[
|
|
KeyedAccount::new(&Pubkey::default(), true, &create_default_account()),
|
|
KeyedAccount::new(&Pubkey::default(), false, &create_default_account()),
|
|
KeyedAccount::new(
|
|
&sysvar::clock::id(),
|
|
false,
|
|
&RefCell::new(sysvar::clock::Clock::default().create_account(1))
|
|
),
|
|
KeyedAccount::new(
|
|
&sysvar::stake_history::id(),
|
|
false,
|
|
&RefCell::new(
|
|
sysvar::stake_history::StakeHistory::default().create_account(1)
|
|
)
|
|
),
|
|
KeyedAccount::new(
|
|
&config::id(),
|
|
false,
|
|
&RefCell::new(config::create_account(0, &config::Config::default()))
|
|
),
|
|
],
|
|
&serialize(&StakeInstruction::DelegateStake).unwrap(),
|
|
),
|
|
Err(InstructionError::InvalidAccountData),
|
|
);
|
|
|
|
// Tests 3rd keyed account is of correct type (Clock instead of rewards) in withdraw
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[
|
|
KeyedAccount::new(&Pubkey::default(), false, &create_default_account()),
|
|
KeyedAccount::new(&Pubkey::default(), false, &create_default_account()),
|
|
KeyedAccount::new(
|
|
&sysvar::rewards::id(),
|
|
false,
|
|
&RefCell::new(sysvar::rewards::create_account(1, 0.0))
|
|
),
|
|
KeyedAccount::new(
|
|
&sysvar::stake_history::id(),
|
|
false,
|
|
&RefCell::new(sysvar::stake_history::create_account(
|
|
1,
|
|
&StakeHistory::default()
|
|
))
|
|
),
|
|
],
|
|
&serialize(&StakeInstruction::Withdraw(42)).unwrap(),
|
|
),
|
|
Err(InstructionError::InvalidArgument),
|
|
);
|
|
|
|
// Tests correct number of accounts are provided in withdraw
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[KeyedAccount::new(
|
|
&Pubkey::default(),
|
|
false,
|
|
&create_default_account()
|
|
)],
|
|
&serialize(&StakeInstruction::Withdraw(42)).unwrap(),
|
|
),
|
|
Err(InstructionError::NotEnoughAccountKeys),
|
|
);
|
|
|
|
// Tests 2nd keyed account is of correct type (Clock instead of rewards) in deactivate
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[
|
|
KeyedAccount::new(&Pubkey::default(), false, &create_default_account()),
|
|
KeyedAccount::new(
|
|
&sysvar::rewards::id(),
|
|
false,
|
|
&RefCell::new(sysvar::rewards::create_account(1, 0.0))
|
|
),
|
|
],
|
|
&serialize(&StakeInstruction::Deactivate).unwrap(),
|
|
),
|
|
Err(InstructionError::InvalidArgument),
|
|
);
|
|
|
|
// Tests correct number of accounts are provided in deactivate
|
|
assert_eq!(
|
|
super::process_instruction(
|
|
&Pubkey::default(),
|
|
&[],
|
|
&serialize(&StakeInstruction::Deactivate).unwrap(),
|
|
),
|
|
Err(InstructionError::NotEnoughAccountKeys),
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_custom_error_decode() {
|
|
use num_traits::FromPrimitive;
|
|
fn pretty_err<T>(err: InstructionError) -> String
|
|
where
|
|
T: 'static + std::error::Error + DecodeError<T> + FromPrimitive,
|
|
{
|
|
if let InstructionError::Custom(code) = err {
|
|
let specific_error: T = T::decode_custom_error_to_enum(code).unwrap();
|
|
format!(
|
|
"{:?}: {}::{:?} - {}",
|
|
err,
|
|
T::type_of(),
|
|
specific_error,
|
|
specific_error,
|
|
)
|
|
} else {
|
|
"".to_string()
|
|
}
|
|
}
|
|
assert_eq!(
|
|
"Custom(0): StakeError::NoCreditsToRedeem - not enough credits to redeem",
|
|
pretty_err::<StakeError>(StakeError::NoCreditsToRedeem.into())
|
|
)
|
|
}
|
|
}
|