feat: Add l1 token address endpoint

core/lib/web3_decl/src/namespaces/zks.rs

@@ -121,4 +121,7 @@ pub trait ZksNamespace {
         keys: Vec<H256>,
         l1_batch_number: L1BatchNumber,
     ) -> RpcResult<Proof>;
+
+    #[method(name = "getBaseTokenL1Address")]
+    async fn get_base_token_l1_address(&self) -> RpcResult<Address>;
 }

core/lib/zksync_core/src/api_server/web3/backend_jsonrpsee/namespaces/zks.rs

@@ -20,6 +20,7 @@ use zksync_web3_decl::{
 use crate::api_server::web3::{backend_jsonrpsee::into_jsrpc_error, ZksNamespace};
 
 #[async_trait]
+
 impl ZksNamespaceServer for ZksNamespace {
     async fn estimate_fee(&self, req: CallRequest) -> RpcResult<Fee> {
         self.estimate_fee_impl(req).await.map_err(into_jsrpc_error)
@@ -172,4 +173,10 @@ impl ZksNamespaceServer for ZksNamespace {
             .await
             .map_err(into_jsrpc_error)
     }
+
+    async fn get_base_token_l1_address(&self) -> RpcResult<Address> {
+        self.get_base_token_l1_address_impl()
+            .await
+            .map_err(into_jsrpc_error)
+    }
 }

core/lib/zksync_core/src/api_server/web3/namespaces/zks.rs

@@ -1,4 +1,4 @@
-use std::{collections::HashMap, convert::TryInto};
+use std::{collections::HashMap, convert::TryInto, env, str::FromStr};
 
 use bigdecimal::{BigDecimal, Zero};
 use zksync_dal::StorageProcessor;
@@ -16,8 +16,8 @@ use zksync_types::{
     l2_to_l1_log::L2ToL1Log,
     tokens::ETHEREUM_ADDRESS,
     transaction_request::CallRequest,
-    AccountTreeId, L1BatchNumber, MiniblockNumber, StorageKey, Transaction, L1_MESSENGER_ADDRESS,
-    L2_ETH_TOKEN_ADDRESS, REQUIRED_L1_TO_L2_GAS_PER_PUBDATA_BYTE, U256, U64,
+    AccountTreeId, L1BatchNumber, MiniblockNumber, StorageKey, Transaction, H160,
+    L1_MESSENGER_ADDRESS, L2_ETH_TOKEN_ADDRESS, REQUIRED_L1_TO_L2_GAS_PER_PUBDATA_BYTE, U256, U64,
 };
 use zksync_utils::{address_to_h256, ratio_to_big_decimal_normalized};
 use zksync_web3_decl::{
@@ -646,4 +646,14 @@ impl ZksNamespace {
             storage_proof,
         })
     }
+
+    #[tracing::instrument(skip_all)]
+    pub async fn get_base_token_l1_address_impl(&self) -> Result<Address, Web3Error> {
+        const METHOD_NAME: &str = "get_base_token_l1_address_impl";
+        let l1_token_env_var = env::var("CONTRACTS_BASE_TOKEN_ADDR")
+            .map_err(|_err| internal_error(METHOD_NAME, "Missing env variable for base token"))?;
+        Ok(H160::from_str(&l1_token_env_var).map_err(|_err| {
+            internal_error(METHOD_NAME, "Set value for base token is not an address")
+        })?)
+    }
 }

core/lib/zksync_core/src/api_server/web3/state.rs

@@ -14,7 +14,7 @@ use zksync_config::configs::{api::Web3JsonRpcConfig, chain::NetworkConfig, Contr
 use zksync_dal::{ConnectionPool, StorageProcessor};
 use zksync_types::{
     api, l2::L2Tx, transaction_request::CallRequest, Address, L1BatchNumber, L1ChainId, L2ChainId,
-    MiniblockNumber, H256, U256, U64,
+    MiniblockNumber, H160, H256, U256, U64,
 };
 use zksync_web3_decl::{error::Web3Error, types::Filter};