Liquidity.Party/tycho-execution
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Merge pull request #207 from propeller-heads/audit/dc/ENG-4538-dont-encode-permit2

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feat: Don't sign permit2 objects
This commit is contained in:
dianacarvalho1
2025-05-26 17:40:27 +01:00
committed by GitHub
parent cdb67f742f 5ddd2a9cd7
commit 04bd546142
14 changed files with 2576 additions and 1979 deletions
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7
examples/encoding-example/main.rs
View File

@@ -7,20 +7,17 @@ use tycho_common::{
}; };
use tycho_execution::encoding::{ use tycho_execution::encoding::{
evm::encoder_builders::TychoRouterEncoderBuilder, evm::encoder_builders::TychoRouterEncoderBuilder,
models::{Solution, Swap}, models::{Solution, Swap, UserTransferType},
}; };
fn main() { fn main() {
// Setup variables
let swapper_pk =
"0x123456789abcdef123456789abcdef123456789abcdef123456789abcdef1234".to_string();
let user_address = Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2") let user_address = Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2")
.expect("Failed to create user address"); .expect("Failed to create user address");
// Initialize the encoder // Initialize the encoder
let encoder = TychoRouterEncoderBuilder::new() let encoder = TychoRouterEncoderBuilder::new()
.chain(Chain::Ethereum) .chain(Chain::Ethereum)
.swapper_pk(swapper_pk) .user_transfer_type(UserTransferType::TransferFrom)
.build() .build()
.expect("Failed to build encoder"); .expect("Failed to build encoder");

24
foundry/test/assets/calldata.txt
View File

@@ -3,23 +3,23 @@ test_single_encoding_strategy_ekubo:5c4b639c000000000000000000000000000000000000
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test_encode_balancer_v2:c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2ba100000625a3754423978a60c9317c58a424e3d5c6ee304399dbdb9c8ef030ab642b10820db8f560002000000000000000000141d96f2f6bef1202e4ce1ff6dad0c2cb002861d3e0102 test_encode_balancer_v2:c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2ba100000625a3754423978a60c9317c58a424e3d5c6ee304399dbdb9c8ef030ab642b10820db8f560002000000000000000000141d96f2f6bef1202e4ce1ff6dad0c2cb002861d3e0102
test_ekubo_encode_swap_multi:01ca4f73fe97d0b987a0d12b39bbd562c779bab6f60000000000000000000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4851d02a5948496a67827242eabc5725531342527c000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec700000000000000000000000000000000000000000001a36e2eb1c43200000032 test_ekubo_encode_swap_multi:01ca4f73fe97d0b987a0d12b39bbd562c779bab6f60000000000000000000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb4851d02a5948496a67827242eabc5725531342527c000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec700000000000000000000000000000000000000000001a36e2eb1c43200000032
test_encode_uniswap_v4_sequential_swap:4c9edd5852cd905f086c759e8383e09bff1e68b32260fac5e5542a773aa44fbcfedf7c193bc2c5990101cd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc2dac17f958d2ee523a2206206994597c13d831ec70000640000012260fac5e5542a773aa44fbcfedf7c193bc2c599000bb800003c test_encode_uniswap_v4_sequential_swap:4c9edd5852cd905f086c759e8383e09bff1e68b32260fac5e5542a773aa44fbcfedf7c193bc2c5990101cd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc2dac17f958d2ee523a2206206994597c13d831ec70000640000012260fac5e5542a773aa44fbcfedf7c193bc2c599000bb800003c

23
src/bin/tycho-encode.rs
View File

@@ -8,7 +8,7 @@ use tycho_execution::encoding::{
approvals::permit2::PermitSingle, approvals::permit2::PermitSingle,
encoder_builders::{TychoExecutorEncoderBuilder, TychoRouterEncoderBuilder}, encoder_builders::{TychoExecutorEncoderBuilder, TychoRouterEncoderBuilder},
}, },
models::Solution, models::{Solution, UserTransferType},
tycho_encoder::TychoEncoder, tycho_encoder::TychoEncoder,
}; };
@@ -24,8 +24,6 @@ use tycho_execution::encoding::{
/// "given_amount": "123...", /// "given_amount": "123...",
/// "checked_token": "0x...", /// "checked_token": "0x...",
/// "exact_out": false, /// "exact_out": false,
/// "slippage": 0.01,
/// "expected_amount": "123...",
/// "checked_amount": "123...", /// "checked_amount": "123...",
/// "swaps": [{ /// "swaps": [{
/// "component": { /// "component": {
@@ -54,9 +52,9 @@ pub struct Cli {
#[arg(short, long)] #[arg(short, long)]
router_address: Option<Bytes>, router_address: Option<Bytes>,
#[arg(short, long)] #[arg(short, long)]
swapper_pk: Option<String>, user_transfer_type: Option<UserTransferType>,
#[arg(short, long)] #[arg(short, long)]
token_in_already_in_router: Option<bool>, swapper_pk: Option<String>,
} }
#[derive(Subcommand)] #[derive(Subcommand)]
@@ -90,12 +88,13 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
if let Some(router_address) = cli.router_address { if let Some(router_address) = cli.router_address {
builder = builder.router_address(router_address); builder = builder.router_address(router_address);
} }
if let Some(user_transfer_type) = cli.user_transfer_type {
builder = builder.user_transfer_type(user_transfer_type);
}
#[allow(deprecated)]
if let Some(swapper_pk) = cli.swapper_pk { if let Some(swapper_pk) = cli.swapper_pk {
builder = builder.swapper_pk(swapper_pk); builder = builder.swapper_pk(swapper_pk);
} }
if let Some(token_in_already_in_router) = cli.token_in_already_in_router {
builder = builder.token_in_already_in_router(token_in_already_in_router);
}
builder.build()? builder.build()?
} }
Commands::TychoExecutor => TychoExecutorEncoderBuilder::new() Commands::TychoExecutor => TychoExecutorEncoderBuilder::new()
@@ -111,17 +110,13 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
"n_tokens": format!("{}", &encoded_solutions[0].n_tokens), "n_tokens": format!("{}", &encoded_solutions[0].n_tokens),
"permit": match encoded_solutions[0].permit.as_ref() { "permit": match encoded_solutions[0].permit.as_ref() {
Some(permit) => { Some(permit) => {
match PermitSingle::try_from(permit.clone()) { match PermitSingle::try_from(permit) {
Ok(sol_permit) => format!("0x{}", hex::encode(sol_permit.abi_encode())), Ok(sol_permit) => format!("0x{}", hex::encode(sol_permit.abi_encode())),
Err(_) => String::new(), // or log or panic or whatever fallback Err(_) => String::new(),
} }
} }
None => String::new(), None => String::new(),
}, },
"signature": encoded_solutions[0].signature
.as_ref()
.map(|signature| format!("0x{}", hex::encode(signature)))
.unwrap_or_else(String::new),
}); });
// Output the encoded result as JSON to stdout // Output the encoded result as JSON to stdout
println!( println!(

86
src/encoding/evm/approvals/permit2.rs
View File

@@ -4,11 +4,9 @@ use alloy::{
primitives::{aliases::U48, Address, Bytes as AlloyBytes, TxKind, U160, U256}, primitives::{aliases::U48, Address, Bytes as AlloyBytes, TxKind, U160, U256},
providers::{Provider, RootProvider}, providers::{Provider, RootProvider},
rpc::types::{TransactionInput, TransactionRequest}, rpc::types::{TransactionInput, TransactionRequest},
signers::{local::PrivateKeySigner, SignerSync},
transports::BoxTransport, transports::BoxTransport,
}; };
use alloy_primitives::{PrimitiveSignature as Signature, B256}; use alloy_sol_types::{sol, SolValue};
use alloy_sol_types::{eip712_domain, sol, SolStruct, SolValue};
use chrono::Utc; use chrono::Utc;
use num_bigint::BigUint; use num_bigint::BigUint;
use tokio::{ use tokio::{
@@ -19,12 +17,8 @@ use tycho_common::Bytes;
use crate::encoding::{ use crate::encoding::{
errors::EncodingError, errors::EncodingError,
evm::{ evm::utils::{biguint_to_u256, bytes_to_address, encode_input, get_client, get_runtime},
encoding_utils::encode_input,
utils::{biguint_to_u256, bytes_to_address, get_client, get_runtime},
},
models, models,
models::Chain,
}; };
/// Struct for managing Permit2 operations, including encoding approvals and fetching allowance /// Struct for managing Permit2 operations, including encoding approvals and fetching allowance
@@ -33,8 +27,6 @@ use crate::encoding::{
pub struct Permit2 { pub struct Permit2 {
address: Address, address: Address,
client: Arc<RootProvider<BoxTransport>>, client: Arc<RootProvider<BoxTransport>>,
signer: PrivateKeySigner,
chain_id: u64,
runtime_handle: Handle, runtime_handle: Handle,
// Store the runtime to prevent it from being dropped before use. // Store the runtime to prevent it from being dropped before use.
// This is required since tycho-execution does not have a pre-existing runtime. // This is required since tycho-execution does not have a pre-existing runtime.
@@ -69,10 +61,10 @@ sol! {
} }
} }
impl TryFrom<PermitSingle> for models::PermitSingle { impl TryFrom<&PermitSingle> for models::PermitSingle {
type Error = EncodingError; type Error = EncodingError;
fn try_from(sol: PermitSingle) -> Result<Self, EncodingError> { fn try_from(sol: &PermitSingle) -> Result<Self, EncodingError> {
Ok(models::PermitSingle { Ok(models::PermitSingle {
details: models::PermitDetails { details: models::PermitDetails {
token: Bytes::from(sol.details.token.to_vec()), token: Bytes::from(sol.details.token.to_vec()),
@@ -90,10 +82,10 @@ impl TryFrom<PermitSingle> for models::PermitSingle {
} }
} }
impl TryFrom<models::PermitSingle> for PermitSingle { impl TryFrom<&models::PermitSingle> for PermitSingle {
type Error = EncodingError; type Error = EncodingError;
fn try_from(p: models::PermitSingle) -> Result<Self, EncodingError> { fn try_from(p: &models::PermitSingle) -> Result<Self, EncodingError> {
Ok(PermitSingle { Ok(PermitSingle {
details: PermitDetails { details: PermitDetails {
token: bytes_to_address(&p.details.token)?, token: bytes_to_address(&p.details.token)?,
@@ -108,22 +100,14 @@ impl TryFrom<models::PermitSingle> for PermitSingle {
} }
impl Permit2 { impl Permit2 {
pub fn new(swapper_pk: String, chain: Chain) -> Result<Self, EncodingError> { pub fn new() -> Result<Self, EncodingError> {
let (handle, runtime) = get_runtime()?; let (handle, runtime) = get_runtime()?;
let client = block_in_place(|| handle.block_on(get_client()))?; let client = block_in_place(|| handle.block_on(get_client()))?;
let pk = B256::from_str(&swapper_pk).map_err(|_| {
EncodingError::FatalError("Failed to convert swapper private key to B256".to_string())
})?;
let signer = PrivateKeySigner::from_bytes(&pk).map_err(|_| {
EncodingError::FatalError("Failed to create signer from private key".to_string())
})?;
Ok(Self { Ok(Self {
address: Address::from_str("0x000000000022D473030F116dDEE9F6B43aC78BA3") address: Address::from_str("0x000000000022D473030F116dDEE9F6B43aC78BA3")
.map_err(|_| EncodingError::FatalError("Permit2 address not valid".to_string()))?, .map_err(|_| EncodingError::FatalError("Permit2 address not valid".to_string()))?,
client, client,
runtime_handle: handle, runtime_handle: handle,
signer,
chain_id: chain.id,
runtime, runtime,
}) })
} }
@@ -162,14 +146,14 @@ impl Permit2 {
))), ))),
} }
} }
/// Creates permit single and signature /// Creates permit single
pub fn get_permit( pub fn get_permit(
&self, &self,
spender: &Bytes, spender: &Bytes,
owner: &Bytes, owner: &Bytes,
token: &Bytes, token: &Bytes,
amount: &BigUint, amount: &BigUint,
) -> Result<(models::PermitSingle, Signature), EncodingError> { ) -> Result<models::PermitSingle, EncodingError> {
let current_time = Utc::now() let current_time = Utc::now()
.naive_utc() .naive_utc()
.and_utc() .and_utc()
@@ -188,21 +172,7 @@ impl Permit2 {
sigDeadline: sig_deadline, sigDeadline: sig_deadline,
}; };
let domain = eip712_domain! { models::PermitSingle::try_from(&permit_single)
name: "Permit2",
chain_id: self.chain_id,
verifying_contract: self.address,
};
let hash = permit_single.eip712_signing_hash(&domain);
let signature = self
.signer
.sign_hash_sync(&hash)
.map_err(|e| {
EncodingError::FatalError(format!(
"Failed to sign permit2 approval with error: {e}"
))
})?;
Ok((models::PermitSingle::try_from(permit_single)?, signature))
} }
} }
@@ -210,11 +180,13 @@ impl Permit2 {
mod tests { mod tests {
use std::str::FromStr; use std::str::FromStr;
use alloy_primitives::Uint; use alloy::signers::local::PrivateKeySigner;
use alloy_primitives::{Uint, B256};
use num_bigint::BigUint; use num_bigint::BigUint;
use tycho_common::models::Chain as TychoCommonChain; use tycho_common::models::Chain as TychoCommonChain;
use super::*; use super::*;
use crate::encoding::{evm::encoding_utils::sign_permit, models::Chain};
// These two implementations are to avoid comparing the expiration and sig_deadline fields // These two implementations are to avoid comparing the expiration and sig_deadline fields
// because they are timestamps // because they are timestamps
@@ -253,9 +225,7 @@ mod tests {
#[test] #[test]
fn test_get_existing_allowance() { fn test_get_existing_allowance() {
let swapper_pk = let manager = Permit2::new().unwrap();
"4c0883a69102937d6231471b5dbb6204fe512961708279feb1be6ae5538da033".to_string();
let manager = Permit2::new(swapper_pk, eth_chain()).unwrap();
let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap(); let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
let owner = Bytes::from_str("0x2c6a3cd97c6283b95ac8c5a4459ebb0d5fd404f4").unwrap(); let owner = Bytes::from_str("0x2c6a3cd97c6283b95ac8c5a4459ebb0d5fd404f4").unwrap();
@@ -272,17 +242,14 @@ mod tests {
#[test] #[test]
fn test_get_permit() { fn test_get_permit() {
// Set up a mock private key for signing let permit2 = Permit2::new().expect("Failed to create Permit2");
let private_key =
"4c0883a69102937d6231471b5dbb6204fe512961708279feb1be6ae5538da033".to_string();
let permit2 = Permit2::new(private_key, eth_chain()).expect("Failed to create Permit2");
let owner = Bytes::from_str("0x2c6a3cd97c6283b95ac8c5a4459ebb0d5fd404f4").unwrap(); let owner = Bytes::from_str("0x2c6a3cd97c6283b95ac8c5a4459ebb0d5fd404f4").unwrap();
let spender = Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap(); let spender = Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap();
let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap(); let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
let amount = BigUint::from(1000u64); let amount = BigUint::from(1000u64);
let (permit, _) = permit2 let permit = permit2
.get_permit(&spender, &owner, &token, &amount) .get_permit(&spender, &owner, &token, &amount)
.unwrap(); .unwrap();
@@ -315,8 +282,19 @@ mod tests {
let anvil_private_key = let anvil_private_key =
"0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80".to_string(); "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80".to_string();
let permit2 = let pk = B256::from_str(&anvil_private_key)
Permit2::new(anvil_private_key, eth_chain()).expect("Failed to create Permit2"); .map_err(|_| {
EncodingError::FatalError(
"Failed to convert swapper private key to B256".to_string(),
)
})
.unwrap();
let signer = PrivateKeySigner::from_bytes(&pk)
.map_err(|_| {
EncodingError::FatalError("Failed to create signer from private key".to_string())
})
.unwrap();
let permit2 = Permit2::new().expect("Failed to create Permit2");
let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap(); let token = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
let amount = BigUint::from(1000u64); let amount = BigUint::from(1000u64);
@@ -346,11 +324,13 @@ mod tests {
let spender = Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap(); let spender = Bytes::from_str("0xba12222222228d8ba445958a75a0704d566bf2c8").unwrap();
let (permit, signature) = permit2 let permit = permit2
.get_permit(&spender, &anvil_account, &token, &amount) .get_permit(&spender, &anvil_account, &token, &amount)
.unwrap(); .unwrap();
let sol_permit: PermitSingle = let sol_permit: PermitSingle =
PermitSingle::try_from(permit).expect("Failed to convert to PermitSingle"); PermitSingle::try_from(&permit).expect("Failed to convert to PermitSingle");
let signature = sign_permit(eth_chain().id, &permit, signer).unwrap();
let encoded = let encoded =
(bytes_to_address(&anvil_account).unwrap(), sol_permit, signature.as_bytes().to_vec()) (bytes_to_address(&anvil_account).unwrap(), sol_permit, signature.as_bytes().to_vec())
.abi_encode(); .abi_encode();

5
src/encoding/evm/approvals/protocol_approvals_manager.rs
View File

@@ -14,10 +14,7 @@ use tokio::{
use crate::encoding::{ use crate::encoding::{
errors::EncodingError, errors::EncodingError,
evm::{ evm::utils::{encode_input, get_client, get_runtime},
encoding_utils::encode_input,
utils::{get_client, get_runtime},
},
}; };
/// A manager for checking if an approval is needed for interacting with a certain spender. /// A manager for checking if an approval is needed for interacting with a certain spender.

57
src/encoding/evm/encoder_builders.rs
View File

@@ -1,5 +1,7 @@
use std::collections::HashMap; use std::{collections::HashMap, str::FromStr};
use alloy::signers::local::PrivateKeySigner;
use alloy_primitives::B256;
use tycho_common::{models::Chain as TychoCommonChain, Bytes}; use tycho_common::{models::Chain as TychoCommonChain, Bytes};
use crate::encoding::{ use crate::encoding::{
@@ -9,7 +11,7 @@ use crate::encoding::{
swap_encoder::swap_encoder_registry::SwapEncoderRegistry, swap_encoder::swap_encoder_registry::SwapEncoderRegistry,
tycho_encoders::{TychoExecutorEncoder, TychoRouterEncoder}, tycho_encoders::{TychoExecutorEncoder, TychoRouterEncoder},
}, },
models::Chain, models::{Chain, UserTransferType},
tycho_encoder::TychoEncoder, tycho_encoder::TychoEncoder,
}; };
@@ -17,11 +19,11 @@ use crate::encoding::{
/// ///
/// This struct allows setting a chain and strategy encoder before building the final encoder. /// This struct allows setting a chain and strategy encoder before building the final encoder.
pub struct TychoRouterEncoderBuilder { pub struct TychoRouterEncoderBuilder {
swapper_pk: Option<String>,
chain: Option<Chain>, chain: Option<Chain>,
user_transfer_type: Option<UserTransferType>,
executors_file_path: Option<String>, executors_file_path: Option<String>,
router_address: Option<Bytes>, router_address: Option<Bytes>,
token_in_already_in_router: Option<bool>, swapper_pk: Option<String>,
} }
impl Default for TychoRouterEncoderBuilder { impl Default for TychoRouterEncoderBuilder {
@@ -33,11 +35,11 @@ impl Default for TychoRouterEncoderBuilder {
impl TychoRouterEncoderBuilder { impl TychoRouterEncoderBuilder {
pub fn new() -> Self { pub fn new() -> Self {
TychoRouterEncoderBuilder { TychoRouterEncoderBuilder {
swapper_pk: None,
chain: None, chain: None,
executors_file_path: None, executors_file_path: None,
router_address: None, router_address: None,
token_in_already_in_router: None, swapper_pk: None,
user_transfer_type: None,
} }
} }
pub fn chain(mut self, chain: TychoCommonChain) -> Self { pub fn chain(mut self, chain: TychoCommonChain) -> Self {
@@ -45,6 +47,11 @@ impl TychoRouterEncoderBuilder {
self self
} }
pub fn user_transfer_type(mut self, user_transfer_type: UserTransferType) -> Self {
self.user_transfer_type = Some(user_transfer_type);
self
}
/// Sets the `executors_file_path` manually. /// Sets the `executors_file_path` manually.
/// If it's not set, the default path will be used (config/executor_addresses.json) /// If it's not set, the default path will be used (config/executor_addresses.json)
pub fn executors_file_path(mut self, executors_file_path: String) -> Self { pub fn executors_file_path(mut self, executors_file_path: String) -> Self {
@@ -59,25 +66,22 @@ impl TychoRouterEncoderBuilder {
self self
} }
/// Sets the `swapper_pk` for the encoder. This is used to sign permit2 objects. This is only
/// needed if you intend to get the full calldata for the transfer. We do not recommend
/// using this option, you should sign and create the function calldata entirely on your
/// own.
#[deprecated(
note = "This is deprecated and will be removed in the future. You should sign and create the function calldata on your own."
)]
pub fn swapper_pk(mut self, swapper_pk: String) -> Self { pub fn swapper_pk(mut self, swapper_pk: String) -> Self {
self.swapper_pk = Some(swapper_pk); self.swapper_pk = Some(swapper_pk);
self self
} }
// Sets the `token_in_already_in_router` flag.
// If set to true, the encoder will assume that the token in is already in the router.
// WARNING: this is an advanced feature and should be used with caution. Make sure you have
// checks to make sure that your tokens won't be lost. The Router is not considered safe to hold
// tokens, so if this is not done within the same transaction you will lose your tokens.
pub fn token_in_already_in_router(mut self, token_in_already_in_router: bool) -> Self {
self.token_in_already_in_router = Some(token_in_already_in_router);
self
}
/// Builds the `TychoRouterEncoder` instance using the configured chain. /// Builds the `TychoRouterEncoder` instance using the configured chain.
/// Returns an error if either the chain has not been set. /// Returns an error if either the chain has not been set.
pub fn build(self) -> Result<Box<dyn TychoEncoder>, EncodingError> { pub fn build(self) -> Result<Box<dyn TychoEncoder>, EncodingError> {
if let Some(chain) = self.chain { if let (Some(chain), Some(user_transfer_type)) = (self.chain, self.user_transfer_type) {
let tycho_router_address; let tycho_router_address;
if let Some(address) = self.router_address { if let Some(address) = self.router_address {
tycho_router_address = address; tycho_router_address = address;
@@ -95,17 +99,28 @@ impl TychoRouterEncoderBuilder {
let swap_encoder_registry = let swap_encoder_registry =
SwapEncoderRegistry::new(self.executors_file_path.clone(), chain.clone())?; SwapEncoderRegistry::new(self.executors_file_path.clone(), chain.clone())?;
let signer = if let Some(pk) = self.swapper_pk {
let pk = B256::from_str(&pk).map_err(|_| {
EncodingError::FatalError("Invalid swapper private key provided".to_string())
})?;
Some(PrivateKeySigner::from_bytes(&pk).map_err(|_| {
EncodingError::FatalError("Failed to create signer".to_string())
})?)
} else {
None
};
Ok(Box::new(TychoRouterEncoder::new( Ok(Box::new(TychoRouterEncoder::new(
chain, chain,
swap_encoder_registry, swap_encoder_registry,
self.swapper_pk,
tycho_router_address, tycho_router_address,
self.token_in_already_in_router user_transfer_type,
.unwrap_or(false), signer,
)?)) )?))
} else { } else {
Err(EncodingError::FatalError( Err(EncodingError::FatalError(
"Please set the chain and router address before building the encoder".to_string(), "Please set the chain and user transfer type before building the encoder"
.to_string(),
)) ))
} }
} }

111
src/encoding/evm/encoding_utils.rs
View File

@@ -1,5 +1,11 @@
use alloy_primitives::{Keccak256, U256}; use std::str::FromStr;
use alloy_sol_types::SolValue;
use alloy::{
primitives::U256,
signers::{local::PrivateKeySigner, Signature, SignerSync},
};
use alloy_primitives::Address;
use alloy_sol_types::{eip712_domain, SolStruct, SolValue};
use num_bigint::BigUint; use num_bigint::BigUint;
use tycho_common::Bytes; use tycho_common::Bytes;
@@ -7,33 +13,13 @@ use crate::encoding::{
errors::EncodingError, errors::EncodingError,
evm::{ evm::{
approvals::permit2::PermitSingle, approvals::permit2::PermitSingle,
utils,
utils::{biguint_to_u256, bytes_to_address}, utils::{biguint_to_u256, bytes_to_address},
}, },
models::{EncodedSolution, NativeAction, Solution, Transaction}, models,
models::{EncodedSolution, NativeAction, Solution, Transaction, UserTransferType},
}; };
/// Encodes the input data for a function call to the given function selector.
pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
let mut hasher = Keccak256::new();
hasher.update(selector.as_bytes());
let selector_bytes = &hasher.finalize()[..4];
let mut call_data = selector_bytes.to_vec();
// Remove extra prefix if present (32 bytes for dynamic data)
// Alloy encoding is including a prefix for dynamic data indicating the offset or length
// but at this point we don't want that
if encoded_args.len() > 32 &&
encoded_args[..32] ==
[0u8; 31]
.into_iter()
.chain([32].to_vec())
.collect::<Vec<u8>>()
{
encoded_args = encoded_args[32..].to_vec();
}
call_data.extend(encoded_args);
call_data
}
/// Encodes a transaction for the Tycho Router using one of its supported swap methods. /// Encodes a transaction for the Tycho Router using one of its supported swap methods.
/// ///
/// # Overview /// # Overview
@@ -56,6 +42,7 @@ pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
/// their own encoding logic** to ensure: /// their own encoding logic** to ensure:
/// - Full control of parameters passed to the router. /// - Full control of parameters passed to the router.
/// - Proper validation and setting of critical inputs such as `minAmountOut`. /// - Proper validation and setting of critical inputs such as `minAmountOut`.
/// - Signing of permit2 objects.
/// ///
/// While Tycho is responsible for encoding the swap paths themselves, the input arguments /// While Tycho is responsible for encoding the swap paths themselves, the input arguments
/// to the router's methods act as **guardrails** for on-chain execution safety. /// to the router's methods act as **guardrails** for on-chain execution safety.
@@ -87,10 +74,12 @@ pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
/// - Returns `EncodingError::FatalError` if the selector is unsupported or required fields (e.g., /// - Returns `EncodingError::FatalError` if the selector is unsupported or required fields (e.g.,
/// permit or signature) are missing. /// permit or signature) are missing.
pub fn encode_tycho_router_call( pub fn encode_tycho_router_call(
chain_id: u64,
encoded_solution: EncodedSolution, encoded_solution: EncodedSolution,
solution: &Solution, solution: &Solution,
token_in_already_in_router: bool, user_transfer_type: UserTransferType,
native_address: Bytes, native_address: Bytes,
signer: Option<PrivateKeySigner>,
) -> Result<Transaction, EncodingError> { ) -> Result<Transaction, EncodingError> {
let (mut unwrap, mut wrap) = (false, false); let (mut unwrap, mut wrap) = (false, false);
if let Some(action) = solution.native_action.clone() { if let Some(action) = solution.native_action.clone() {
@@ -106,23 +95,23 @@ pub fn encode_tycho_router_call(
let checked_token = bytes_to_address(&solution.checked_token)?; let checked_token = bytes_to_address(&solution.checked_token)?;
let receiver = bytes_to_address(&solution.receiver)?; let receiver = bytes_to_address(&solution.receiver)?;
let n_tokens = U256::from(encoded_solution.n_tokens); let n_tokens = U256::from(encoded_solution.n_tokens);
let permit = if let Some(p) = encoded_solution.permit { let (permit, signature) = if let Some(p) = encoded_solution.permit {
Some( let permit = Some(
PermitSingle::try_from(p) PermitSingle::try_from(&p)
.map_err(|_| EncodingError::InvalidInput("Invalid permit".to_string()))?, .map_err(|_| EncodingError::InvalidInput("Invalid permit".to_string()))?,
) );
let signer = signer
.ok_or(EncodingError::FatalError("Signer must be set to use permit2".to_string()))?;
let signature = sign_permit(chain_id, &p, signer)?;
(permit, signature.as_bytes().to_vec())
} else { } else {
None (None, vec![])
}; };
let method_calldata = if encoded_solution let method_calldata = if encoded_solution
.selector .selector
.contains("singleSwapPermit2") .contains("singleSwapPermit2")
{ {
let sig = encoded_solution
.signature
.ok_or(EncodingError::FatalError("Signature must be set to use permit2".to_string()))?;
println!("sig {:}", hex::encode(&sig));
( (
given_amount, given_amount,
given_token, given_token,
@@ -134,7 +123,7 @@ pub fn encode_tycho_router_call(
permit.ok_or(EncodingError::FatalError( permit.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(), "permit2 object must be set to use permit2".to_string(),
))?, ))?,
sig, signature,
encoded_solution.swaps, encoded_solution.swaps,
) )
.abi_encode() .abi_encode()
@@ -150,7 +139,7 @@ pub fn encode_tycho_router_call(
wrap, wrap,
unwrap, unwrap,
receiver, receiver,
!token_in_already_in_router, user_transfer_type == UserTransferType::TransferFrom,
encoded_solution.swaps, encoded_solution.swaps,
) )
.abi_encode() .abi_encode()
@@ -169,11 +158,7 @@ pub fn encode_tycho_router_call(
permit.ok_or(EncodingError::FatalError( permit.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(), "permit2 object must be set to use permit2".to_string(),
))?, ))?,
encoded_solution signature,
.signature
.ok_or(EncodingError::FatalError(
"Signature must be set to use permit2".to_string(),
))?,
encoded_solution.swaps, encoded_solution.swaps,
) )
.abi_encode() .abi_encode()
@@ -189,7 +174,7 @@ pub fn encode_tycho_router_call(
wrap, wrap,
unwrap, unwrap,
receiver, receiver,
!token_in_already_in_router, user_transfer_type == UserTransferType::TransferFrom,
encoded_solution.swaps, encoded_solution.swaps,
) )
.abi_encode() .abi_encode()
@@ -209,11 +194,7 @@ pub fn encode_tycho_router_call(
permit.ok_or(EncodingError::FatalError( permit.ok_or(EncodingError::FatalError(
"permit2 object must be set to use permit2".to_string(), "permit2 object must be set to use permit2".to_string(),
))?, ))?,
encoded_solution signature,
.signature
.ok_or(EncodingError::FatalError(
"Signature must be set to use permit2".to_string(),
))?,
encoded_solution.swaps, encoded_solution.swaps,
) )
.abi_encode() .abi_encode()
@@ -230,7 +211,7 @@ pub fn encode_tycho_router_call(
unwrap, unwrap,
n_tokens, n_tokens,
receiver, receiver,
!token_in_already_in_router, user_transfer_type == UserTransferType::TransferFrom,
encoded_solution.swaps, encoded_solution.swaps,
) )
.abi_encode() .abi_encode()
@@ -238,7 +219,7 @@ pub fn encode_tycho_router_call(
Err(EncodingError::FatalError("Invalid selector for Tycho router".to_string()))? Err(EncodingError::FatalError("Invalid selector for Tycho router".to_string()))?
}; };
let contract_interaction = encode_input(&encoded_solution.selector, method_calldata); let contract_interaction = utils::encode_input(&encoded_solution.selector, method_calldata);
let value = if solution.given_token == native_address { let value = if solution.given_token == native_address {
solution.given_amount.clone() solution.given_amount.clone()
} else { } else {
@@ -246,3 +227,33 @@ pub fn encode_tycho_router_call(
}; };
Ok(Transaction { to: encoded_solution.interacting_with, value, data: contract_interaction }) Ok(Transaction { to: encoded_solution.interacting_with, value, data: contract_interaction })
} }
/// Signs a Permit2 `PermitSingle` struct using the EIP-712 signing scheme.
///
/// This function constructs an EIP-712 domain specific to the Permit2 contract and computes the
/// hash of the provided `PermitSingle`. It then uses the given `PrivateKeySigner` to produce
/// a cryptographic signature of the permit.
///
/// # Warning
/// This is only an **example implementation** provided for reference purposes.
/// **Do not rely on this in production.** You should implement your own version.
pub fn sign_permit(
chain_id: u64,
permit_single: &models::PermitSingle,
signer: PrivateKeySigner,
) -> Result<Signature, EncodingError> {
let permit2_address = Address::from_str("0x000000000022D473030F116dDEE9F6B43aC78BA3")
.map_err(|_| EncodingError::FatalError("Permit2 address not valid".to_string()))?;
let domain = eip712_domain! {
name: "Permit2",
chain_id: chain_id,
verifying_contract: permit2_address,
};
let permit_single: PermitSingle = PermitSingle::try_from(permit_single)?;
let hash = permit_single.eip712_signing_hash(&domain);
signer
.sign_hash_sync(&hash)
.map_err(|e| {
EncodingError::FatalError(format!("Failed to sign permit2 approval with error: {e}"))
})
}

2
src/encoding/evm/mod.rs
View File

@@ -1,7 +1,7 @@
pub mod approvals; pub mod approvals;
mod constants; mod constants;
pub mod encoder_builders; pub mod encoder_builders;
pub mod encoding_utils; mod encoding_utils;
mod group_swaps; mod group_swaps;
pub mod strategy_encoder; pub mod strategy_encoder;
mod swap_encoder; mod swap_encoder;

1839
src/encoding/evm/strategy_encoder/strategy_encoders.rs
View File

File diff suppressed because it is too large Load Diff

44
src/encoding/evm/strategy_encoder/transfer_optimizations.rs
View File

@@ -8,7 +8,7 @@ use crate::encoding::{
constants::{CALLBACK_CONSTRAINED_PROTOCOLS, IN_TRANSFER_REQUIRED_PROTOCOLS}, constants::{CALLBACK_CONSTRAINED_PROTOCOLS, IN_TRANSFER_REQUIRED_PROTOCOLS},
group_swaps::SwapGroup, group_swaps::SwapGroup,
}, },
models::TransferType, models::{TransferType, UserTransferType},
}; };
/// A struct that defines how the tokens will be transferred into the given pool given the solution. /// A struct that defines how the tokens will be transferred into the given pool given the solution.
@@ -16,7 +16,7 @@ use crate::encoding::{
pub struct TransferOptimization { pub struct TransferOptimization {
native_token: Bytes, native_token: Bytes,
wrapped_token: Bytes, wrapped_token: Bytes,
token_in_already_in_router: bool, user_transfer_type: UserTransferType,
router_address: Bytes, router_address: Bytes,
} }
@@ -24,15 +24,10 @@ impl TransferOptimization {
pub fn new( pub fn new(
native_token: Bytes, native_token: Bytes,
wrapped_token: Bytes, wrapped_token: Bytes,
token_in_already_in_router: bool, user_transfer_type: UserTransferType,
router_address: Bytes, router_address: Bytes,
) -> Self { ) -> Self {
TransferOptimization { TransferOptimization { native_token, wrapped_token, user_transfer_type, router_address }
native_token,
wrapped_token,
token_in_already_in_router,
router_address,
}
} }
/// Returns the transfer type that should be used for the current transfer. /// Returns the transfer type that should be used for the current transfer.
@@ -55,7 +50,7 @@ impl TransferOptimization {
TransferType::Transfer TransferType::Transfer
} else if is_first_swap { } else if is_first_swap {
if in_transfer_required { if in_transfer_required {
if self.token_in_already_in_router { if self.user_transfer_type == UserTransferType::None {
// Transfer from router to pool. // Transfer from router to pool.
TransferType::Transfer TransferType::Transfer
} else { } else {
@@ -64,7 +59,7 @@ impl TransferOptimization {
} }
// in transfer is not necessary for these protocols. Only make a transfer from the // in transfer is not necessary for these protocols. Only make a transfer from the
// swapper to the router if the tokens are not already in the router // swapper to the router if the tokens are not already in the router
} else if !self.token_in_already_in_router { } else if self.user_transfer_type != UserTransferType::None {
// Transfer from swapper to router using. // Transfer from swapper to router using.
TransferType::TransferFrom TransferType::TransferFrom
} else { } else {
@@ -146,30 +141,30 @@ mod tests {
#[rstest] #[rstest]
// First swap tests // First swap tests
// WETH -(univ2)-> DAI we expect a transfer from the user to the protocol // WETH -(univ2)-> DAI we expect a transfer from the user to the protocol
#[case(weth(), weth(), "uniswap_v2".to_string(), false, false,false, TransferType::TransferFrom)] #[case(weth(), weth(), "uniswap_v2".to_string(), false, UserTransferType::TransferFrom,false, TransferType::TransferFrom)]
// Native token swap. No transfer is needed // Native token swap. No transfer is needed
#[case(eth(), eth(), "uniswap_v2".to_string(),false, false,false, TransferType::None)] #[case(eth(), eth(), "uniswap_v2".to_string(),false, UserTransferType::TransferFrom,false, TransferType::None)]
// ETH -(wrap)-> WETH -(univ2)-> DAI. Only a transfer from the router into the protocol is // ETH -(wrap)-> WETH -(univ2)-> DAI. Only a transfer from the router into the protocol is
// needed // needed
#[case(eth(), weth(), "uniswap_v2".to_string(),true, false,false,TransferType::Transfer)] #[case(eth(), weth(), "uniswap_v2".to_string(),true, UserTransferType::TransferFrom,false,TransferType::Transfer)]
// USDC -(univ2)-> DAI and the tokens are already in the router. Only a transfer from the router // USDC -(univ2)-> DAI and the tokens are already in the router. Only a transfer from the router
// to the protocol is needed // to the protocol is needed
#[case(usdc(), usdc(), "uniswap_v2".to_string(),false, true,false, TransferType::Transfer)] #[case(usdc(), usdc(), "uniswap_v2".to_string(),false, UserTransferType::None,false, TransferType::Transfer)]
// USDC -(curve)-> DAI and the tokens are already in the router. No transfer is needed // USDC -(curve)-> DAI and the tokens are already in the router. No transfer is needed
#[case(usdc(), usdc(), "vm:curve".to_string(),false, true, false,TransferType::None)] #[case(usdc(), usdc(), "vm:curve".to_string(),false, UserTransferType::None, false,TransferType::None)]
// other swaps tests // other swaps tests
// tokens need to be transferred into the pool // tokens need to be transferred into the pool
#[case(weth(), usdc(), "uniswap_v2".to_string(), false, false,false, TransferType::Transfer)] #[case(weth(), usdc(), "uniswap_v2".to_string(), false, UserTransferType::TransferFrom,false, TransferType::Transfer)]
// tokens are already in the pool (optimization) // tokens are already in the pool (optimization)
#[case(weth(), usdc(), "uniswap_v2".to_string(), false, false, true, TransferType::None)] #[case(weth(), usdc(), "uniswap_v2".to_string(), false, UserTransferType::TransferFrom, true, TransferType::None)]
// tokens are already in the router and don't need a transfer // tokens are already in the router and don't need a transfer
#[case(weth(), usdc(), "vm:curve".to_string(), false, false, false, TransferType::None)] #[case(weth(), usdc(), "vm:curve".to_string(), false, UserTransferType::TransferFrom, false, TransferType::None)]
fn test_get_transfers( fn test_get_transfers(
#[case] given_token: Bytes, #[case] given_token: Bytes,
#[case] swap_token_in: Bytes, #[case] swap_token_in: Bytes,
#[case] protocol: String, #[case] protocol: String,
#[case] wrap: bool, #[case] wrap: bool,
#[case] token_in_already_in_router: bool, #[case] user_transfer_type: UserTransferType,
#[case] in_between_swap_optimization: bool, #[case] in_between_swap_optimization: bool,
#[case] expected_transfer: TransferType, #[case] expected_transfer: TransferType,
) { ) {
@@ -192,7 +187,7 @@ mod tests {
swaps, swaps,
}; };
let optimization = let optimization =
TransferOptimization::new(eth(), weth(), token_in_already_in_router, router_address()); TransferOptimization::new(eth(), weth(), user_transfer_type, router_address());
let transfer = optimization.get_transfers( let transfer = optimization.get_transfers(
swap.clone(), swap.clone(),
given_token, given_token,
@@ -224,7 +219,12 @@ mod tests {
#[case] expected_receiver: Bytes, #[case] expected_receiver: Bytes,
#[case] expected_optimization: bool, #[case] expected_optimization: bool,
) { ) {
let optimization = TransferOptimization::new(eth(), weth(), false, router_address()); let optimization = TransferOptimization::new(
eth(),
weth(),
UserTransferType::TransferFrom,
router_address(),
);
let next_swap = if protocol.is_none() { let next_swap = if protocol.is_none() {
None None

2304
src/encoding/evm/tycho_encoders.rs
View File

File diff suppressed because it is too large Load Diff

24
src/encoding/evm/utils.rs
View File

@@ -9,7 +9,7 @@ use alloy::{
providers::{ProviderBuilder, RootProvider}, providers::{ProviderBuilder, RootProvider},
transports::BoxTransport, transports::BoxTransport,
}; };
use alloy_primitives::{aliases::U24, Address, U256, U8}; use alloy_primitives::{aliases::U24, Address, Keccak256, U256, U8};
use alloy_sol_types::SolValue; use alloy_sol_types::SolValue;
use num_bigint::BigUint; use num_bigint::BigUint;
use once_cell::sync::Lazy; use once_cell::sync::Lazy;
@@ -159,3 +159,25 @@ pub fn write_calldata_to_file(test_identifier: &str, hex_calldata: &str) {
writeln!(file, "{line}").expect("Failed to write calldata"); writeln!(file, "{line}").expect("Failed to write calldata");
} }
} }
/// Encodes the input data for a function call to the given function selector.
pub fn encode_input(selector: &str, mut encoded_args: Vec<u8>) -> Vec<u8> {
let mut hasher = Keccak256::new();
hasher.update(selector.as_bytes());
let selector_bytes = &hasher.finalize()[..4];
let mut call_data = selector_bytes.to_vec();
// Remove extra prefix if present (32 bytes for dynamic data)
// Alloy encoding is including a prefix for dynamic data indicating the offset or length
// but at this point we don't want that
if encoded_args.len() > 32 &&
encoded_args[..32] ==
[0u8; 31]
.into_iter()
.chain([32].to_vec())
.collect::<Vec<u8>>()
{
encoded_args = encoded_args[32..].to_vec();
}
call_data.extend(encoded_args);
call_data
}

28
src/encoding/models.rs
View File

@@ -1,3 +1,4 @@
use clap::ValueEnum;
use hex; use hex;
use num_bigint::BigUint; use num_bigint::BigUint;
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
@@ -8,6 +9,31 @@ use tycho_common::{
use crate::encoding::{errors::EncodingError, serde_primitives::biguint_string}; use crate::encoding::{errors::EncodingError, serde_primitives::biguint_string};
/// Specifies the method for transferring user funds into Tycho execution.
///
/// Options:
///
/// - `TransferFromPermit2`: Use Permit2 for token transfer.
/// - You must manually approve the Permit2 contract and sign the permit object externally
/// (outside `tycho-execution`).
///
/// - `TransferFrom`: Use standard ERC-20 approval and `transferFrom`.
/// - You must approve the Tycho Router contract to spend your tokens via standard `approve()`
/// calls.
///
/// - `None`: No transfer will be performed.
/// - Assumes the tokens are already present in the Tycho Router.
/// - **Warning**: This is an advanced mode. Ensure your logic guarantees that the tokens are
/// already in the router at the time of execution.
/// - The Tycho router is **not** designed to safely hold tokens. If tokens are not transferred
/// and used in the **same transaction**, they will be permanently lost.
#[derive(Clone, Debug, PartialEq, ValueEnum)]
pub enum UserTransferType {
TransferFromPermit2,
TransferFrom,
None,
}
/// Represents a solution containing details describing an order, and instructions for filling /// Represents a solution containing details describing an order, and instructions for filling
/// the order. /// the order.
#[derive(Clone, Default, Debug, Deserialize, Serialize)] #[derive(Clone, Default, Debug, Deserialize, Serialize)]
@@ -95,7 +121,6 @@ pub struct Transaction {
/// * `selector`: The selector of the function to be called. /// * `selector`: The selector of the function to be called.
/// * `n_tokens`: Number of tokens in the swap. /// * `n_tokens`: Number of tokens in the swap.
/// * `permit`: Optional permit for the swap (if permit2 is enabled). /// * `permit`: Optional permit for the swap (if permit2 is enabled).
/// * `signature`: Optional signature for the swap (if permit2 is enabled).
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
pub struct EncodedSolution { pub struct EncodedSolution {
pub swaps: Vec<u8>, pub swaps: Vec<u8>,
@@ -103,7 +128,6 @@ pub struct EncodedSolution {
pub selector: String, pub selector: String,
pub n_tokens: usize, pub n_tokens: usize,
pub permit: Option<PermitSingle>, pub permit: Option<PermitSingle>,
pub signature: Option<Vec<u8>>,
} }
/// Represents a single permit for permit2. /// Represents a single permit for permit2.

1
src/encoding/tycho_encoder.rs
View File

@@ -61,6 +61,7 @@ pub trait TychoEncoder {
/// ///
/// # Returns /// # Returns
/// A vector of fully constructed [`Transaction`]s that can be submitted to a node or bundler. /// A vector of fully constructed [`Transaction`]s that can be submitted to a node or bundler.
#[deprecated(note = "Please use `encode_solutions` instead")]
fn encode_full_calldata( fn encode_full_calldata(
&self, &self,
solutions: Vec<Solution>, solutions: Vec<Solution>,