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feat: add nonce tracker and rate lock contracts #29

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Merged
portableDD merged 2 commits into from
Jul 30, 2025
Merged

feat: add nonce tracker and rate lock contracts #29

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587258a
feat: implement nonce tracker and rate lock contracts
0xZyrick Jul 25, 2025
e5b2053
style: format code for consistency
0xZyrick Jul 25, 2025
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4 changes: 4 additions & 0 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -9,11 +9,15 @@ pub mod events;
pub mod fees;
pub mod mint;
pub mod multisig;
pub mod nonce;
pub mod rate_lock;
pub mod schema;
pub mod token;
pub mod utils;

pub use crate::email_to_wallet::EmailToWalletContract;
pub use crate::nonce::ContractError;
pub use crate::nonce::NonceTracker;
pub use conversion::ConversionContract;
pub use conversion::Currency;
pub use escrow::EscrowContract;
Expand Down
36 changes: 36 additions & 0 deletions src/nonce.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,36 @@
#![no_std]

use soroban_sdk::{contract, contracterror, contractimpl, symbol_short, Address, Env, Symbol};

#[contracterror]
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
pub enum ContractError {
InvalidNonce = 1,
}

#[contract]
pub struct NonceTracker;

#[contractimpl]
impl NonceTracker {
pub fn get_nonce(env: Env, user: Address) -> u64 {
let key = (user.clone(), symbol_short!("NONCE"));
env.storage().persistent().get(&key).unwrap_or(0)
}

pub fn check_and_update_nonce(
env: Env,
user: Address,
incoming: u64,
) -> Result<u64, ContractError> {
let key = (user.clone(), symbol_short!("NONCE"));
let stored: u64 = env.storage().persistent().get(&key).unwrap_or(0);

if incoming <= stored {
return Err(ContractError::InvalidNonce);
}

env.storage().persistent().set(&key, &incoming);
Ok(incoming)
}
}
35 changes: 35 additions & 0 deletions src/rate_lock.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
#![no_std]

use soroban_sdk::{contract, contracterror, contractimpl, symbol_short, Address, Env, Symbol};

#[contracterror]
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum RateLockError {
NoRateLocked = 1,
RateExpired = 2,
}

#[contract]
pub struct RateLockContract;

#[contractimpl]
impl RateLockContract {
pub fn lock_rate(env: Env, user: Address, rate: i128, duration_seconds: u64) {
let expiry = env.ledger().timestamp() + duration_seconds;
let key = (user.clone(), symbol_short!("RATELOCK"));
env.storage().persistent().set(&key, &(rate, expiry));
}

pub fn validate_conversion(env: Env, user: Address) -> Result<i128, RateLockError> {
let key = (user.clone(), symbol_short!("RATELOCK"));
let stored: Option<(i128, u64)> = env.storage().persistent().get(&key);

let (rate, expiry) = stored.ok_or(RateLockError::NoRateLocked)?;

if env.ledger().timestamp() > expiry {
return Err(RateLockError::RateExpired);
}

Ok(rate)
}
}
133 changes: 133 additions & 0 deletions test_snapshots/test_lock_and_validate_rate.1.json
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Original file line number Diff line number Diff line change
@@ -0,0 +1,133 @@
{
"generators": {
"address": 2,
"nonce": 0
},
"auth": [
[],
[],
[],
[]
],
"ledger": {
"protocol_version": 22,
"sequence_number": 0,
"timestamp": 61,
"network_id": "0000000000000000000000000000000000000000000000000000000000000000",
"base_reserve": 0,
"min_persistent_entry_ttl": 4096,
"min_temp_entry_ttl": 16,
"max_entry_ttl": 6312000,
"ledger_entries": [
[
{
"contract_data": {
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
"key": {
"vec": [
{
"address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
},
{
"symbol": "RATELOCK"
}
]
},
"durability": "persistent"
}
},
[
{
"last_modified_ledger_seq": 0,
"data": {
"contract_data": {
"ext": "v0",
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
"key": {
"vec": [
{
"address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
},
{
"symbol": "RATELOCK"
}
]
},
"durability": "persistent",
"val": {
"vec": [
{
"i128": {
"hi": 0,
"lo": 100
}
},
{
"u64": 60
}
]
}
}
},
"ext": "v0"
},
4095
]
],
[
{
"contract_data": {
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
"key": "ledger_key_contract_instance",
"durability": "persistent"
}
},
[
{
"last_modified_ledger_seq": 0,
"data": {
"contract_data": {
"ext": "v0",
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
"key": "ledger_key_contract_instance",
"durability": "persistent",
"val": {
"contract_instance": {
"executable": {
"wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
},
"storage": null
}
}
}
},
"ext": "v0"
},
4095
]
],
[
{
"contract_code": {
"hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
}
},
[
{
"last_modified_ledger_seq": 0,
"data": {
"contract_code": {
"ext": "v0",
"hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"code": ""
}
},
"ext": "v0"
},
4095
]
]
]
},
"events": []
}
122 changes: 122 additions & 0 deletions test_snapshots/test_nonce_tracker.1.json
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Original file line number Diff line number Diff line change
@@ -0,0 +1,122 @@
{
"generators": {
"address": 2,
"nonce": 0
},
"auth": [
[],
[],
[]
],
"ledger": {
"protocol_version": 22,
"sequence_number": 0,
"timestamp": 0,
"network_id": "0000000000000000000000000000000000000000000000000000000000000000",
"base_reserve": 0,
"min_persistent_entry_ttl": 4096,
"min_temp_entry_ttl": 16,
"max_entry_ttl": 6312000,
"ledger_entries": [
[
{
"contract_data": {
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
"key": {
"vec": [
{
"address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
},
{
"symbol": "NONCE"
}
]
},
"durability": "persistent"
}
},
[
{
"last_modified_ledger_seq": 0,
"data": {
"contract_data": {
"ext": "v0",
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
"key": {
"vec": [
{
"address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
},
{
"symbol": "NONCE"
}
]
},
"durability": "persistent",
"val": {
"u64": 2
}
}
},
"ext": "v0"
},
4095
]
],
[
{
"contract_data": {
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
"key": "ledger_key_contract_instance",
"durability": "persistent"
}
},
[
{
"last_modified_ledger_seq": 0,
"data": {
"contract_data": {
"ext": "v0",
"contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
"key": "ledger_key_contract_instance",
"durability": "persistent",
"val": {
"contract_instance": {
"executable": {
"wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
},
"storage": null
}
}
}
},
"ext": "v0"
},
4095
]
],
[
{
"contract_code": {
"hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
}
},
[
{
"last_modified_ledger_seq": 0,
"data": {
"contract_code": {
"ext": "v0",
"hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"code": ""
}
},
"ext": "v0"
},
4095
]
]
]
},
"events": []
}
26 changes: 26 additions & 0 deletions tests/nonce_test.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
#![cfg(test)]

use soroban_sdk::testutils::Address as _;
use soroban_sdk::{Address, Env};
use stellar_multisig_contract::nonce::ContractError;
use stellar_multisig_contract::nonce::NonceTracker;

#[test]
fn test_nonce_tracker() {
let env = Env::default();
let contract_id = env.register(NonceTracker, ());
let user = Address::generate(&env);

env.as_contract(&contract_id, || {
assert_eq!(NonceTracker::get_nonce(env.clone(), user.clone()), 0);
NonceTracker::check_and_update_nonce(env.clone(), user.clone(), 1).unwrap();
assert_eq!(NonceTracker::get_nonce(env.clone(), user.clone()), 1);
});

env.as_contract(&contract_id, || {
let err = NonceTracker::check_and_update_nonce(env.clone(), user.clone(), 1).unwrap_err();
assert_eq!(err, ContractError::InvalidNonce);
NonceTracker::check_and_update_nonce(env.clone(), user.clone(), 2).unwrap();
assert_eq!(NonceTracker::get_nonce(env.clone(), user.clone()), 2);
})
}
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