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Ensure that the spl-token 2 native mint account is owned by the spl-t…
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…oken 2 program.

Workaround for solana-labs/solana-program-library#374 until spl-token 3 is shipped
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@mvines
mvines committed Sep 1, 2020
1 parent 0ed360b commit 3ead8c6
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Showing 2 changed files with 125 additions and 2 deletions.
4 changes: 2 additions & 2 deletions core/src/rpc.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2873,7 +2873,7 @@ pub mod tests {
let largest_accounts: Vec<RpcAccountBalance> =
serde_json::from_value(json["result"]["value"].clone())
.expect("actual response deserialization");
assert_eq!(largest_accounts.len(), 19);
assert_eq!(largest_accounts.len(), 18);

// Get Alice balance
let req = format!(
Expand Down Expand Up @@ -4906,7 +4906,7 @@ pub mod tests {
.expect("actual response deserialization");
let accounts: Vec<RpcKeyedAccount> =
serde_json::from_value(result["result"].clone()).unwrap();
assert_eq!(accounts.len(), 3);
assert_eq!(accounts.len(), 4);

// Test returns only mint accounts
let req = format!(
Expand Down
123 changes: 123 additions & 0 deletions runtime/src/bank.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,29 @@ use std::{
sync::{Arc, RwLock, RwLockReadGuard},
};

// Partial SPL Token v2.0.x declarations inlined to avoid an external dependency on the spl-token crate
pub mod inline_spl_token_v2_0 {
solana_sdk::declare_id!("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA");
pub mod native_mint {
solana_sdk::declare_id!("So11111111111111111111111111111111111111112");

/*
Mint {
mint_authority: COption::None,
supply: 0,
decimals: 9,
is_initialized: true,
freeze_authority: COption::None,
}
*/
pub const ACCOUNT_DATA: [u8; 82] = [
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
];
}
}

pub const SECONDS_PER_YEAR: f64 = 365.25 * 24.0 * 60.0 * 60.0;

pub const MAX_LEADER_SCHEDULE_STAKES: Epoch = 5;
Expand Down Expand Up @@ -3208,6 +3231,7 @@ impl Bank {
self.reinvoke_entered_epoch_callback(initiate_callback);
self.recheck_cross_program_support();
self.recheck_compute_budget();
self.reconfigure_token2_native_mint();
}

fn ensure_builtins(&mut self, init_or_warp: bool) {
Expand Down Expand Up @@ -3257,6 +3281,39 @@ impl Bank {
self.set_compute_budget(compute_budget);
}

fn reconfigure_token2_native_mint(self: &mut Bank) {
let reconfigure_token2_native_mint = match self.operating_mode() {
OperatingMode::Development => true,
OperatingMode::Preview => self.epoch() == 93,
OperatingMode::Stable => self.epoch() == 74,
};

if reconfigure_token2_native_mint {
let mut native_mint_account = solana_sdk::account::Account {
owner: inline_spl_token_v2_0::id(),
data: inline_spl_token_v2_0::native_mint::ACCOUNT_DATA.to_vec(),
lamports: 1000000000, // 1 SOL
executable: false,
rent_epoch: self.epoch() + 1,
};

// As a workaround for
// https://github.com/solana-labs/solana-program-library/issues/374, ensure that the
// spl-token 2 native mint account is owned by the spl-token 2 program.
if let Some(existing_native_mint_account) =
self.get_account(&inline_spl_token_v2_0::native_mint::id())
{
if existing_native_mint_account.owner == solana_sdk::system_program::id() {
native_mint_account.lamports = existing_native_mint_account.lamports;
}
}
self.store_account(
&inline_spl_token_v2_0::native_mint::id(),
&native_mint_account,
);
}
}

fn fix_recent_blockhashes_sysvar_delay(&self) -> bool {
let activation_slot = match self.operating_mode() {
OperatingMode::Development => 0,
Expand Down Expand Up @@ -8360,4 +8417,70 @@ mod tests {
.unwrap()
.add_native_program("mock_program", &program_id);
}

#[test]
fn test_reconfigure_token2_native_mint() {
solana_logger::setup();

let mut genesis_config =
create_genesis_config_with_leader(5, &Pubkey::new_rand(), 0).genesis_config;

// OperatingMode::Development - Native mint exists immediately
assert_eq!(genesis_config.operating_mode, OperatingMode::Development);
let bank = Arc::new(Bank::new(&genesis_config));
assert_eq!(
bank.get_balance(&inline_spl_token_v2_0::native_mint::id()),
1000000000
);

// OperatingMode::Preview - Native mint blinks into existence at epoch 93
genesis_config.operating_mode = OperatingMode::Preview;
let bank = Arc::new(Bank::new(&genesis_config));
assert_eq!(
bank.get_balance(&inline_spl_token_v2_0::native_mint::id()),
0
);
bank.deposit(&inline_spl_token_v2_0::native_mint::id(), 4200000000);

let bank = Bank::new_from_parent(
&bank,
&Pubkey::default(),
genesis_config.epoch_schedule.get_first_slot_in_epoch(93),
);

let native_mint_account = bank
.get_account(&inline_spl_token_v2_0::native_mint::id())
.unwrap();
assert_eq!(native_mint_account.data.len(), 82);
assert_eq!(
bank.get_balance(&inline_spl_token_v2_0::native_mint::id()),
4200000000
);
assert_eq!(native_mint_account.owner, inline_spl_token_v2_0::id());

// OperatingMode::Stable - Native mint blinks into existence at epoch 74
genesis_config.operating_mode = OperatingMode::Stable;
let bank = Arc::new(Bank::new(&genesis_config));
assert_eq!(
bank.get_balance(&inline_spl_token_v2_0::native_mint::id()),
0
);
bank.deposit(&inline_spl_token_v2_0::native_mint::id(), 4200000000);

let bank = Bank::new_from_parent(
&bank,
&Pubkey::default(),
genesis_config.epoch_schedule.get_first_slot_in_epoch(74),
);

let native_mint_account = bank
.get_account(&inline_spl_token_v2_0::native_mint::id())
.unwrap();
assert_eq!(native_mint_account.data.len(), 82);
assert_eq!(
bank.get_balance(&inline_spl_token_v2_0::native_mint::id()),
4200000000
);
assert_eq!(native_mint_account.owner, inline_spl_token_v2_0::id());
}
}

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