feat: Add paymaster support to cast send (#612)

* Add paymaster support to cast send

* remove reference

* Add zksync flag to cast send and handle missing zk paymaster parameters

* Clap zksync flag when paymaster parameters present, better handling paymaster parameters

* put cast send logic for zksync in it's own function

* Add cast paymaster tests

* Remove unnecesary paymaster settings in test

crates/cast/Cargo.toml

@@ -35,6 +35,8 @@ foundry-compilers.workspace = true
 foundry-config.workspace = true
 foundry-evm.workspace = true
 foundry-wallets.workspace = true
+foundry-zksync-core.workspace = true
+zksync-web3-rs.workspace = true
 
 alloy-chains.workspace = true
 alloy-consensus = { workspace = true, features = ["serde", "kzg"] }

crates/cast/bin/cmd/send.rs

@@ -1,20 +1,40 @@
 use crate::tx::{self, CastTxBuilder};
 use alloy_network::{AnyNetwork, EthereumWallet};
+use alloy_primitives::{Address, Bytes, TxHash};
 use alloy_provider::{Provider, ProviderBuilder};
 use alloy_rpc_types::TransactionRequest;
 use alloy_serde::WithOtherFields;
 use alloy_signer::Signer;
 use alloy_transport::Transport;
 use cast::Cast;
-use clap::Parser;
+use clap::{builder::ArgPredicate, Parser};
 use eyre::Result;
 use foundry_cli::{
     opts::{EthereumOpts, TransactionOpts},
     utils,
 };
 use foundry_common::{cli_warn, ens::NameOrAddress};
 use foundry_config::Config;
+use foundry_wallets::WalletSigner;
+use foundry_zksync_core::{self, convert::ConvertAddress};
 use std::{path::PathBuf, str::FromStr};
+use zksync_web3_rs::eip712::PaymasterParams;
+
+/// ZkSync-specific paymaster parameters for transactions
+#[derive(Debug, Parser)]
+pub struct ZksyncParams {
+    /// Use ZKSync
+    #[arg(long, default_value_ifs([("paymaster_address", ArgPredicate::IsPresent, "true"),("paymaster_input", ArgPredicate::IsPresent, "true")]))]
+    zksync: bool,
+
+    /// The paymaster address for the ZKSync transaction
+    #[arg(long = "zk-paymaster-address", requires = "paymaster_input")]
+    paymaster_address: Option<String>,
+
+    /// The paymaster input for the ZKSync transaction
+    #[arg(long = "zk-paymaster-input", requires = "paymaster_address")]
+    paymaster_input: Option<String>,
+}
 
 /// CLI arguments for `cast send`.
 #[derive(Debug, Parser)]
@@ -69,6 +89,9 @@ pub struct SendTxArgs {
         help_heading = "Transaction options"
     )]
     path: Option<PathBuf>,
+
+    #[command(flatten)]
+    zksync_params: ZksyncParams,
 }
 
 #[derive(Debug, Parser)]
@@ -103,6 +126,7 @@ impl SendTxArgs {
             unlocked,
             path,
             timeout,
+            zksync_params,
         } = self;
 
         let blob_data = if let Some(path) = path { Some(std::fs::read(path)?) } else { None };
@@ -171,14 +195,30 @@ impl SendTxArgs {
 
             tx::validate_from_address(eth.wallet.from, from)?;
 
-            let (tx, _) = builder.build(&signer).await?;
-
-            let wallet = EthereumWallet::from(signer);
-            let provider = ProviderBuilder::<_, _, AnyNetwork>::default()
-                .wallet(wallet)
-                .on_provider(&provider);
-
-            cast_send(provider, tx, cast_async, confirmations, timeout, to_json).await
+            if zksync_params.zksync {
+                let (tx, _) = builder.build(&signer).await?;
+                cast_send_zk(
+                    &provider,
+                    zksync_params,
+                    tx,
+                    cast_async,
+                    confirmations,
+                    timeout,
+                    to_json,
+                    signer,
+                )
+                .await
+            } else {
+                // Standard transaction
+                let (tx, _) = builder.build(&signer).await?;
+
+                let wallet = EthereumWallet::from(signer);
+                let provider = ProviderBuilder::<_, _, AnyNetwork>::default()
+                    .wallet(wallet)
+                    .on_provider(&provider);
+
+                cast_send(provider, tx, cast_async, confirmations, timeout, to_json).await
+            }
         }
     }
 }
@@ -196,6 +236,54 @@ async fn cast_send<P: Provider<T, AnyNetwork>, T: Transport + Clone>(
 
     let tx_hash = pending_tx.inner().tx_hash();
 
+    handle_transaction_result(&cast, tx_hash, cast_async, confs, timeout, to_json).await
+}
+
+#[allow(clippy::too_many_arguments)]
+async fn cast_send_zk<P: Provider<T, AnyNetwork>, T: Transport + Clone>(
+    provider: P,
+    zksync_params: ZksyncParams,
+    tx: WithOtherFields<TransactionRequest>,
+    cast_async: bool,
+    confs: u64,
+    timeout: u64,
+    to_json: bool,
+    signer: WalletSigner,
+) -> Result<()> {
+    // ZkSync transaction
+    let paymaster_params = zksync_params
+        .paymaster_address
+        .and_then(|addr| zksync_params.paymaster_input.map(|input| (addr, input)))
+        .map(|(addr, input)| PaymasterParams {
+            paymaster: Address::from_str(&addr).expect("Invalid paymaster address").to_h160(),
+            paymaster_input: Bytes::from_str(&input).expect("Invalid paymaster input").to_vec(),
+        });
+
+    // Build EIP712 transaction for ZKSync
+    let tx = foundry_zksync_core::new_eip712_transaction(
+        tx,
+        Vec::new(), // Empty factory_deps
+        paymaster_params,
+        &provider,
+        signer,
+    )
+    .await
+    .map_err(|e| eyre::eyre!("Failed to create EIP712 transaction: {}", e))?;
+
+    // Use send_raw_transaction for ZKSync
+    let tx_hash = provider.send_raw_transaction(&tx).await?.tx_hash().to_owned();
+    let cast = Cast::new(provider);
+    handle_transaction_result(&cast, &tx_hash, cast_async, confs, timeout, to_json).await
+}
+
+async fn handle_transaction_result<P: Provider<T, AnyNetwork>, T: Transport + Clone>(
+    cast: &Cast<P, T>,
+    tx_hash: &TxHash,
+    cast_async: bool,
+    confs: u64,
+    timeout: u64,
+    to_json: bool,
+) -> Result<()> {
     if cast_async {
         println!("{tx_hash:#x}");
     } else {

crates/cast/bin/tx.rs

@@ -165,7 +165,9 @@ where
         }
 
         if let Some(gas_price) = tx_opts.gas_price {
-            if legacy {
+            // We need to set the gas price to be able to create the EIP-712 transaction in
+            // zkcontext
+            if legacy || config.zksync.startup {
                 tx.set_gas_price(gas_price.to());
             } else {
                 tx.set_max_fee_per_gas(gas_price.to());