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use crate::ownable_instruction::OwnableError;
use bincode::serialize_into;
use solana_sdk::{
account::KeyedAccount,
instruction::InstructionError,
program_utils::{limited_deserialize, next_keyed_account},
pubkey::Pubkey,
};
fn set_owner(
account_owner_pubkey: &mut Pubkey,
new_owner_pubkey: Pubkey,
owner_keyed_account: &KeyedAccount,
) -> Result<(), InstructionError> {
match owner_keyed_account.signer_key() {
None => return Err(InstructionError::MissingRequiredSignature),
Some(signer_key) => {
if account_owner_pubkey != signer_key {
return Err(OwnableError::IncorrectOwner.into());
}
*account_owner_pubkey = new_owner_pubkey;
}
}
Ok(())
}
pub fn process_instruction(
_program_id: &Pubkey,
keyed_accounts: &[KeyedAccount],
data: &[u8],
) -> Result<(), InstructionError> {
let new_owner_pubkey: Pubkey = limited_deserialize(data)?;
let keyed_accounts_iter = &mut keyed_accounts.iter();
let account_keyed_account = &mut next_keyed_account(keyed_accounts_iter)?;
let mut account_owner_pubkey: Pubkey =
limited_deserialize(&account_keyed_account.try_account_ref()?.data)?;
if account_owner_pubkey == Pubkey::default() {
account_owner_pubkey = new_owner_pubkey;
} else {
let owner_keyed_account = &mut next_keyed_account(keyed_accounts_iter)?;
set_owner(
&mut account_owner_pubkey,
new_owner_pubkey,
&owner_keyed_account,
)?;
}
let mut account = account_keyed_account.try_account_ref_mut()?;
serialize_into(&mut account.data[..], &account_owner_pubkey)
.map_err(|_| InstructionError::AccountDataTooSmall)
}
#[cfg(test)]
mod tests {
use super::*;
use crate::ownable_instruction;
use solana_runtime::{bank::Bank, bank_client::BankClient};
use solana_sdk::{
account::Account,
client::SyncClient,
genesis_config::create_genesis_config,
message::Message,
signature::{Keypair, Signature, Signer},
system_program,
transport::Result,
};
fn create_bank(lamports: u64) -> (Bank, Keypair) {
let (genesis_config, mint_keypair) = create_genesis_config(lamports);
let mut bank = Bank::new(&genesis_config);
bank.add_builtin_program("ownable_program", crate::id(), process_instruction);
(bank, mint_keypair)
}
fn create_bank_client(lamports: u64) -> (BankClient, Keypair) {
let (bank, mint_keypair) = create_bank(lamports);
(BankClient::new(bank), mint_keypair)
}
fn create_ownable_account(
bank_client: &BankClient,
payer_keypair: &Keypair,
account_keypair: &Keypair,
owner_pubkey: &Pubkey,
lamports: u64,
) -> Result<Signature> {
let instructions = ownable_instruction::create_account(
&payer_keypair.pubkey(),
&account_keypair.pubkey(),
owner_pubkey,
lamports,
);
let message = Message::new(&instructions);
bank_client.send_message(&[payer_keypair, account_keypair], message)
}
fn send_set_owner(
bank_client: &BankClient,
payer_keypair: &Keypair,
account_pubkey: &Pubkey,
old_owner_keypair: &Keypair,
new_owner_pubkey: &Pubkey,
) -> Result<Signature> {
let instruction = ownable_instruction::set_owner(
account_pubkey,
&old_owner_keypair.pubkey(),
new_owner_pubkey,
);
let message = Message::new_with_payer(&[instruction], Some(&payer_keypair.pubkey()));
bank_client.send_message(&[payer_keypair, old_owner_keypair], message)
}
#[test]
fn test_ownable_set_owner() {
let (bank_client, payer_keypair) = create_bank_client(2);
let account_keypair = Keypair::new();
let account_pubkey = account_keypair.pubkey();
let owner_keypair = Keypair::new();
let owner_pubkey = owner_keypair.pubkey();
create_ownable_account(
&bank_client,
&payer_keypair,
&account_keypair,
&owner_pubkey,
1,
)
.unwrap();
let new_owner_keypair = Keypair::new();
let new_owner_pubkey = new_owner_keypair.pubkey();
send_set_owner(
&bank_client,
&payer_keypair,
&account_pubkey,
&owner_keypair,
&new_owner_pubkey,
)
.unwrap();
let account_data = bank_client
.get_account_data(&account_pubkey)
.unwrap()
.unwrap();
let account_owner_pubkey: Pubkey = limited_deserialize(&account_data).unwrap();
assert_eq!(account_owner_pubkey, new_owner_pubkey);
}
#[test]
fn test_ownable_missing_owner_signature() {
let mut account_owner_pubkey = Pubkey::new_rand();
let owner_pubkey = account_owner_pubkey;
let new_owner_pubkey = Pubkey::new_rand();
let account = Account::new_ref(1, 0, &system_program::id());
let owner_keyed_account = KeyedAccount::new(&owner_pubkey, false, &account);
let err = set_owner(
&mut account_owner_pubkey,
new_owner_pubkey,
&owner_keyed_account,
)
.unwrap_err();
assert_eq!(err, InstructionError::MissingRequiredSignature);
}
#[test]
fn test_ownable_incorrect_owner() {
let mut account_owner_pubkey = Pubkey::new_rand();
let new_owner_pubkey = Pubkey::new_rand();
let account = Account::new_ref(1, 0, &system_program::id());
let mallory_pubkey = Pubkey::new_rand();
let owner_keyed_account = KeyedAccount::new(&mallory_pubkey, true, &account);
let err = set_owner(
&mut account_owner_pubkey,
new_owner_pubkey,
&owner_keyed_account,
)
.unwrap_err();
assert_eq!(err, OwnableError::IncorrectOwner.into());
}
}