fix: tracing (#1099)

* fix toml version

* set tracing block gas limit to u64::MAX

* revert change

* add check in send_raw_transaction

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "kakarot-rpc"
-version = "0.1.0"
+version = "0.6.12"
 edition = "2021"
 authors = [
   "Abdelhamid Bakhta <@abdelhamidbakhta>",

src/eth_provider/provider.rs

@@ -43,6 +43,7 @@ use super::utils::{contract_not_found, entrypoint_not_found, into_filter, split_
 use crate::eth_provider::utils::format_hex;
 use crate::models::block::{EthBlockId, EthBlockNumberOrTag};
 use crate::models::felt::Felt252Wrapper;
+use crate::tracing::builder::TRACING_BLOCK_GAS_LIMIT;
 use crate::{into_via_try_wrapper, into_via_wrapper};
 
 pub type EthProviderResult<T> = Result<T, EthApiError>;
@@ -537,6 +538,14 @@ where
             max_fee.saturating_sub(eth_fees)
         };
 
+        // If the transaction gas limit is higher than the tracing
+        // block gas limit, prevent the transaction from being sent
+        // (it will revert anyway on the Starknet side). This assures
+        // that all transactions are traceable.
+        if transaction_signed.gas_limit() > TRACING_BLOCK_GAS_LIMIT {
+            return Err(TransactionError::GasOverflow.into());
+        }
+
         // Deploy EVM transaction signer if Hive feature is enabled
         #[cfg(feature = "hive")]
         self.deploy_evm_transaction_signer(signer).await?;

src/tracing/builder.rs

@@ -25,7 +25,7 @@ pub struct TracerBuilder<P: EthereumProvider + Send + Sync, Status = Floating> {
 /// Block gas limit for tracing. Set to an arbitrarily high value to never run out.
 /// Block gas limit is only partially enforced in Cairo EVM layer: <https://github.com/kkrt-labs/kakarot/blob/98b26fda32c36f09880ed0c7f44dba7f4d669b61/src/kakarot/accounts/library.cairo#L245>
 /// Remove when block gas limit is enforced consistently (i.e. when we check that a transaction's gas limit is lower than the block gas limit as well as the current block's cumulative gas)
-const TRACING_BLOCK_GAS_LIMIT: u64 = 1_000_000_000;
+pub const TRACING_BLOCK_GAS_LIMIT: u64 = 1_000_000_000;
 
 impl<P: EthereumProvider + Send + Sync + Clone> TracerBuilder<P, Floating> {
     pub async fn new(eth_provider: P) -> TracerResult<Self> {