use solana_sdk::{
account::Account,
account_utils::StateMut,
fee_calculator::FeeCalculator,
hash::Hash,
instruction::CompiledInstruction,
nonce::{self, state::Versions, State},
program_utils::limited_deserialize,
pubkey::Pubkey,
system_instruction::SystemInstruction,
system_program,
transaction::{self, Transaction},
};
pub fn transaction_uses_durable_nonce(tx: &Transaction) -> Option<&CompiledInstruction> {
let message = tx.message();
message
.instructions
.get(0)
.filter(|maybe_ix| {
let prog_id_idx = maybe_ix.program_id_index as usize;
match message.account_keys.get(prog_id_idx) {
Some(program_id) => system_program::check_id(&program_id),
_ => false,
}
} && match limited_deserialize(&maybe_ix.data) {
Ok(SystemInstruction::AdvanceNonceAccount) => true,
_ => false,
})
}
pub fn get_nonce_pubkey_from_instruction<'a>(
ix: &CompiledInstruction,
tx: &'a Transaction,
) -> Option<&'a Pubkey> {
ix.accounts.get(0).and_then(|idx| {
let idx = *idx as usize;
tx.message().account_keys.get(idx)
})
}
pub fn verify_nonce_account(acc: &Account, hash: &Hash) -> bool {
match StateMut::<Versions>::state(acc).map(|v| v.convert_to_current()) {
Ok(State::Initialized(ref data)) => *hash == data.blockhash,
_ => false,
}
}
pub fn prepare_if_nonce_account(
account: &mut Account,
account_pubkey: &Pubkey,
tx_result: &transaction::Result<()>,
maybe_nonce: Option<(&Pubkey, &Account)>,
last_blockhash: &Hash,
) {
if let Some((nonce_key, nonce_acc)) = maybe_nonce {
if account_pubkey == nonce_key {
if tx_result.is_err() {
*account = nonce_acc.clone()
}
let state = StateMut::<Versions>::state(nonce_acc)
.unwrap()
.convert_to_current();
if let State::Initialized(ref data) = state {
let new_data = Versions::new_current(State::Initialized(nonce::state::Data {
blockhash: *last_blockhash,
..data.clone()
}));
account.set_state(&new_data).unwrap();
}
}
}
}
pub fn fee_calculator_of(account: &Account) -> Option<FeeCalculator> {
let state = StateMut::<Versions>::state(account)
.ok()?
.convert_to_current();
match state {
State::Initialized(data) => Some(data.fee_calculator),
_ => None,
}
}
#[cfg(test)]
mod tests {
use super::*;
use solana_sdk::{
account::Account,
account_utils::State as AccountUtilsState,
hash::Hash,
instruction::InstructionError,
nonce::{self, account::with_test_keyed_account, Account as NonceAccount, State},
pubkey::Pubkey,
signature::{Keypair, Signer},
system_instruction,
sysvar::{recent_blockhashes::create_test_recent_blockhashes, rent::Rent},
};
use std::collections::HashSet;
fn nonced_transfer_tx() -> (Pubkey, Pubkey, Transaction) {
let from_keypair = Keypair::new();
let from_pubkey = from_keypair.pubkey();
let nonce_keypair = Keypair::new();
let nonce_pubkey = nonce_keypair.pubkey();
let tx = Transaction::new_signed_instructions(
&[&from_keypair, &nonce_keypair],
vec![
system_instruction::advance_nonce_account(&nonce_pubkey, &nonce_pubkey),
system_instruction::transfer(&from_pubkey, &nonce_pubkey, 42),
],
Hash::default(),
);
(from_pubkey, nonce_pubkey, tx)
}
#[test]
fn tx_uses_nonce_ok() {
let (_, _, tx) = nonced_transfer_tx();
assert!(transaction_uses_durable_nonce(&tx).is_some());
}
#[test]
fn tx_uses_nonce_empty_ix_fail() {
let tx =
Transaction::new_signed_instructions(&[&Keypair::new(); 0], vec![], Hash::default());
assert!(transaction_uses_durable_nonce(&tx).is_none());
}
#[test]
fn tx_uses_nonce_bad_prog_id_idx_fail() {
let (_, _, mut tx) = nonced_transfer_tx();
tx.message.instructions.get_mut(0).unwrap().program_id_index = 255u8;
assert!(transaction_uses_durable_nonce(&tx).is_none());
}
#[test]
fn tx_uses_nonce_first_prog_id_not_nonce_fail() {
let from_keypair = Keypair::new();
let from_pubkey = from_keypair.pubkey();
let nonce_keypair = Keypair::new();
let nonce_pubkey = nonce_keypair.pubkey();
let tx = Transaction::new_signed_instructions(
&[&from_keypair, &nonce_keypair],
vec![
system_instruction::transfer(&from_pubkey, &nonce_pubkey, 42),
system_instruction::advance_nonce_account(&nonce_pubkey, &nonce_pubkey),
],
Hash::default(),
);
assert!(transaction_uses_durable_nonce(&tx).is_none());
}
#[test]
fn tx_uses_nonce_wrong_first_nonce_ix_fail() {
let from_keypair = Keypair::new();
let from_pubkey = from_keypair.pubkey();
let nonce_keypair = Keypair::new();
let nonce_pubkey = nonce_keypair.pubkey();
let tx = Transaction::new_signed_instructions(
&[&from_keypair, &nonce_keypair],
vec![
system_instruction::withdraw_nonce_account(
&nonce_pubkey,
&nonce_pubkey,
&from_pubkey,
42,
),
system_instruction::transfer(&from_pubkey, &nonce_pubkey, 42),
],
Hash::default(),
);
assert!(transaction_uses_durable_nonce(&tx).is_none());
}
#[test]
fn get_nonce_pub_from_ix_ok() {
let (_, nonce_pubkey, tx) = nonced_transfer_tx();
let nonce_ix = transaction_uses_durable_nonce(&tx).unwrap();
assert_eq!(
get_nonce_pubkey_from_instruction(&nonce_ix, &tx),
Some(&nonce_pubkey),
);
}
#[test]
fn get_nonce_pub_from_ix_no_accounts_fail() {
let (_, _, tx) = nonced_transfer_tx();
let nonce_ix = transaction_uses_durable_nonce(&tx).unwrap();
let mut nonce_ix = nonce_ix.clone();
nonce_ix.accounts.clear();
assert_eq!(get_nonce_pubkey_from_instruction(&nonce_ix, &tx), None,);
}
#[test]
fn get_nonce_pub_from_ix_bad_acc_idx_fail() {
let (_, _, tx) = nonced_transfer_tx();
let nonce_ix = transaction_uses_durable_nonce(&tx).unwrap();
let mut nonce_ix = nonce_ix.clone();
nonce_ix.accounts[0] = 255u8;
assert_eq!(get_nonce_pubkey_from_instruction(&nonce_ix, &tx), None,);
}
#[test]
fn verify_nonce_ok() {
with_test_keyed_account(42, true, |nonce_account| {
let mut signers = HashSet::new();
signers.insert(nonce_account.signer_key().unwrap().clone());
let state: State = nonce_account.state().unwrap();
assert_eq!(state, State::Uninitialized);
let recent_blockhashes = create_test_recent_blockhashes(0);
let authorized = nonce_account.unsigned_key().clone();
nonce_account
.initialize_nonce_account(&authorized, &recent_blockhashes, &Rent::free())
.unwrap();
assert!(verify_nonce_account(
&nonce_account.account.borrow(),
&recent_blockhashes[0].blockhash,
));
});
}
#[test]
fn verify_nonce_bad_acc_state_fail() {
with_test_keyed_account(42, true, |nonce_account| {
assert!(!verify_nonce_account(
&nonce_account.account.borrow(),
&Hash::default()
));
});
}
#[test]
fn verify_nonce_bad_query_hash_fail() {
with_test_keyed_account(42, true, |nonce_account| {
let mut signers = HashSet::new();
signers.insert(nonce_account.signer_key().unwrap().clone());
let state: State = nonce_account.state().unwrap();
assert_eq!(state, State::Uninitialized);
let recent_blockhashes = create_test_recent_blockhashes(0);
let authorized = nonce_account.unsigned_key().clone();
nonce_account
.initialize_nonce_account(&authorized, &recent_blockhashes, &Rent::free())
.unwrap();
assert!(!verify_nonce_account(
&nonce_account.account.borrow(),
&recent_blockhashes[1].blockhash,
));
});
}
fn create_accounts_prepare_if_nonce_account() -> (Pubkey, Account, Account, Hash) {
let data = Versions::new_current(State::Initialized(nonce::state::Data::default()));
let account = Account::new_data(42, &data, &system_program::id()).unwrap();
let pre_account = Account {
lamports: 43,
..account.clone()
};
(
Pubkey::default(),
pre_account,
account,
Hash::new(&[1u8; 32]),
)
}
fn run_prepare_if_nonce_account_test(
account: &mut Account,
account_pubkey: &Pubkey,
tx_result: &transaction::Result<()>,
maybe_nonce: Option<(&Pubkey, &Account)>,
last_blockhash: &Hash,
expect_account: &Account,
) -> bool {
match maybe_nonce {
Some((nonce_pubkey, _nonce_account))
if nonce_pubkey == account_pubkey && tx_result.is_ok() =>
{
assert_ne!(expect_account, account)
}
Some((nonce_pubkey, nonce_account)) if nonce_pubkey == account_pubkey => {
assert_ne!(expect_account, nonce_account)
}
_ => assert_eq!(expect_account, account),
}
prepare_if_nonce_account(
account,
account_pubkey,
tx_result,
maybe_nonce,
last_blockhash,
);
expect_account == account
}
#[test]
fn test_prepare_if_nonce_account_expected() {
let (pre_account_pubkey, pre_account, mut post_account, last_blockhash) =
create_accounts_prepare_if_nonce_account();
let post_account_pubkey = pre_account_pubkey;
let mut expect_account = post_account.clone();
let data = Versions::new_current(State::Initialized(nonce::state::Data {
blockhash: last_blockhash,
..nonce::state::Data::default()
}));
expect_account.set_state(&data).unwrap();
assert!(run_prepare_if_nonce_account_test(
&mut post_account,
&post_account_pubkey,
&Ok(()),
Some((&pre_account_pubkey, &pre_account)),
&last_blockhash,
&expect_account,
));
}
#[test]
fn test_prepare_if_nonce_account_not_nonce_tx() {
let (pre_account_pubkey, _pre_account, _post_account, last_blockhash) =
create_accounts_prepare_if_nonce_account();
let post_account_pubkey = pre_account_pubkey;
let mut post_account = Account::default();
let expect_account = post_account.clone();
assert!(run_prepare_if_nonce_account_test(
&mut post_account,
&post_account_pubkey,
&Ok(()),
None,
&last_blockhash,
&expect_account,
));
}
#[test]
fn test_prepare_if_nonce_naccount_ot_nonce_pubkey() {
let (pre_account_pubkey, pre_account, mut post_account, last_blockhash) =
create_accounts_prepare_if_nonce_account();
let expect_account = post_account.clone();
assert!(run_prepare_if_nonce_account_test(
&mut post_account,
&Pubkey::new(&[1u8; 32]),
&Ok(()),
Some((&pre_account_pubkey, &pre_account)),
&last_blockhash,
&expect_account,
));
}
#[test]
fn test_prepare_if_nonce_account_tx_error() {
let (pre_account_pubkey, pre_account, mut post_account, last_blockhash) =
create_accounts_prepare_if_nonce_account();
let post_account_pubkey = pre_account_pubkey;
let mut expect_account = pre_account.clone();
expect_account
.set_state(&Versions::new_current(State::Initialized(
nonce::state::Data {
blockhash: last_blockhash,
..nonce::state::Data::default()
},
)))
.unwrap();
assert!(run_prepare_if_nonce_account_test(
&mut post_account,
&post_account_pubkey,
&Err(transaction::TransactionError::InstructionError(
0,
InstructionError::InvalidArgument.into(),
)),
Some((&pre_account_pubkey, &pre_account)),
&last_blockhash,
&expect_account,
));
}
}