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Add incident response #679

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5bebab5
yieldvault
teeschima Jun 1, 2026
798e555
project-done
teeschima Jun 1, 2026
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38 changes: 24 additions & 14 deletions contracts/vault/src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,7 @@ pub enum DataKey {
PriceOracle,
PriceOracleHeartbeat,
LastValidatedPrice,
LastActionSeq(Address),
OracleEnabled,
}

Expand Down Expand Up @@ -101,6 +102,7 @@ pub enum VaultError {
HeartbeatExceeded = 15,
PriceDeviationExceeded = 16,
OracleNotSet = 17,
RapidAction = 18,
}

#[contract]
Expand Down Expand Up @@ -780,6 +782,14 @@ impl YieldVault {
/// Publishes a `(symbol_short!("deposit"),)` event with `(amount, shares_minted)`.

pub fn deposit(env: Env, user: Address, amount: i128) -> Result<i128, VaultError> {
// Guard against rapid opposing actions in same ledger sequence
let current_seq = env.ledger().sequence();
let last_seq_key = DataKey::LastActionSeq(user.clone());
if let Some(last_seq) = env.storage().instance().get::<_, u32>(&last_seq_key) {
if last_seq == current_seq {
return Err(VaultError::RapidAction);
}
}
let mut state = Self::get_state(&env);
if state.is_paused {
return Err(VaultError::ContractPaused);
Expand Down Expand Up @@ -820,6 +830,8 @@ impl YieldVault {
(amount, shares_to_mint),
);

// Update last action sequence for user
env.storage().instance().set(&DataKey::LastActionSeq(user.clone()), &current_seq);
Ok(shares_to_mint)
}

Expand All @@ -833,6 +845,14 @@ impl YieldVault {
/// The quantity of underlying tokens returned to the user.

pub fn withdraw(env: Env, user: Address, shares: i128) -> Result<i128, VaultError> {
// Guard against rapid opposing actions in same ledger sequence
let current_seq = env.ledger().sequence();
let last_seq_key = DataKey::LastActionSeq(user.clone());
if let Some(last_seq) = env.storage().instance().get::<DataKey, u32>(&last_seq_key) {
if last_seq == current_seq {
return Err(VaultError::RapidAction);
}
}
let mut state = Self::get_state(&env);
if state.is_paused {
return Err(VaultError::ContractPaused);
Expand Down Expand Up @@ -894,6 +914,8 @@ impl YieldVault {
.instance()
.set(&user_key, &Self::checked_sub(user_shares, shares)?);

// Update last action sequence for user
env.storage().instance().set(&DataKey::LastActionSeq(user.clone()), &current_seq);
env.events().publish(
(symbol_short!("withdraw"), user),
(assets_to_return, shares),
Expand Down Expand Up @@ -981,20 +1003,8 @@ impl YieldVault {

token_client.transfer(&admin, &env.current_contract_address(), &amount);

let ta = env
.storage()
.instance()
.get::<_, i128>(&DataKey::TotalAssets)
.unwrap_or(0);
// Update total assets state
let ta = env
.storage()
.instance()
.get::<_, i128>(&DataKey::TotalAssets)
.unwrap_or(0);
env.storage()
.instance()
.set(&DataKey::TotalAssets, &(ta + amount));
let ta = env.storage().instance().get::<_, i128>(&DataKey::TotalAssets).unwrap_or(0);
env.storage().instance().set(&DataKey::TotalAssets, &(ta + amount));

let mut state = Self::get_state(&env);
state.total_assets += amount;
Expand Down
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