fix: get code, code hash and code size from an unregistered address

c/polyjuice.h

@@ -416,6 +416,10 @@ size_t get_code_size(struct evmc_host_context* context,
   uint32_t account_id = 0;
   int ret = load_account_id_by_eth_address(context->gw_ctx,
                                            address->bytes, &account_id);
+  if (ret == GW_ERROR_NOT_FOUND) {
+    ckb_debug("END get_code_size");
+    return 0;
+  }
   if (ret != 0) {
     ckb_debug("get contract account id failed");
     return 0;
@@ -441,6 +445,10 @@ evmc_bytes32 get_code_hash(struct evmc_host_context* context,
   uint32_t account_id = 0;
   int ret = load_account_id_by_eth_address(context->gw_ctx,
                                            address->bytes, &account_id);
+  if (ret == GW_ERROR_NOT_FOUND) {
+    ckb_debug("END get_code_hash");
+    return hash;
+  }
   if (ret != 0) {
     ckb_debug("get contract account id failed");
     context->error_code = ret;
@@ -489,6 +497,10 @@ size_t copy_code(struct evmc_host_context* context, const evmc_address* address,
   uint32_t account_id = 0;
   int ret = load_account_id_by_eth_address(context->gw_ctx,
                                            address->bytes, &account_id);
+  if (ret == GW_ERROR_NOT_FOUND) {
+    ckb_debug("END copy_code");
+    return 0;
+  }
   if (ret != 0) {
     ckb_debug("get contract account id failed");
     context->error_code = ret;

c/polyjuice_utils.h

@@ -129,8 +129,8 @@ int load_script_hash_by_eth_address(gw_context_t *ctx,
   if (_is_zero_hash(script_hash)) {
     return GW_ERROR_NOT_FOUND;
   }
-  ckb_debug("load_script_hash_by_eth_address success");
   return 0;
+  ckb_debug("load_script_hash_by_eth_address success");
 }
 
 int load_eth_address_by_script_hash(gw_context_t *ctx,

polyjuice-tests/src/test_cases/absent_address.rs

@@ -0,0 +1,158 @@
+use ckb_vm::Bytes;
+use gw_common::state::State;
+use gw_store::{chain_view::ChainView, traits::chain_store::ChainStore};
+use gw_types::{
+    packed::RawL2Transaction,
+    prelude::{Builder, Entity, Pack},
+};
+
+use crate::helper::{
+    create_block_producer, deploy, new_block_info, setup, MockContractInfo, PolyjuiceArgsBuilder,
+    CREATOR_ACCOUNT_ID, L2TX_MAX_CYCLES,
+};
+
+const INIT_CODE: &str = include_str!("./evm-contracts/AbsentAddress.bin");
+#[test]
+fn absent_address_test() -> anyhow::Result<()> {
+    let (store, mut state, generator) = setup();
+    let block_producer = create_block_producer(&mut state);
+
+    let from_eth_address = [1u8; 20];
+    let (from_id, _from_script_hash) =
+        crate::helper::create_eth_eoa_account(&mut state, &from_eth_address, 200000000u64.into());
+
+    // Deploy Contract
+    let _run_result = deploy(
+        &generator,
+        &store,
+        &mut state,
+        CREATOR_ACCOUNT_ID,
+        from_id,
+        INIT_CODE,
+        1284600,
+        0,
+        block_producer.clone(),
+        0,
+    );
+
+    let contract_account = MockContractInfo::create(&from_eth_address, 0);
+    let new_account_id = state
+        .get_account_id_by_script_hash(&contract_account.script_hash)?
+        .unwrap();
+
+    // 0xdB81D2b8154A10C6f25bC2a9225F403D954D0B65 is an unregistered eth_address.
+    // call getBalance("0xdB81D2b8154A10C6f25bC2a9225F403D954D0B65")
+    let input =
+        hex::decode("f8b2cb4f000000000000000000000000db81d2b8154a10c6f25bc2a9225f403d954d0b65")?;
+    let block_info = new_block_info(block_producer.clone(), 1, 0);
+    let args = PolyjuiceArgsBuilder::default()
+        .gas_limit(228060)
+        .gas_price(1)
+        .value(0)
+        .input(&input)
+        .build();
+    let raw_tx = RawL2Transaction::new_builder()
+        .from_id(from_id.pack())
+        .to_id(new_account_id.pack())
+        .args(Bytes::from(args).pack())
+        .build();
+    let db = store.begin_transaction();
+    let tip_block_hash = db.get_tip_block_hash().unwrap();
+    let run_result = generator
+        .execute_transaction(
+            &ChainView::new(&db, tip_block_hash),
+            &state,
+            &block_info,
+            &raw_tx,
+            L2TX_MAX_CYCLES,
+        )
+        .expect("Call getBalance");
+    assert_eq!(run_result.return_data.as_ref(), &[0u8; 32]);
+
+    //call getCodeSize("0xdB81D2b8154A10C6f25bC2a9225F403D954D0B65")
+    let input =
+        hex::decode("b51c4f96000000000000000000000000db81d2b8154a10c6f25bc2a9225f403d954d0b65")?;
+    let block_info = new_block_info(block_producer.clone(), 1, 0);
+    let args = PolyjuiceArgsBuilder::default()
+        .gas_limit(228060)
+        .gas_price(1)
+        .value(0)
+        .input(&input)
+        .build();
+    let raw_tx = RawL2Transaction::new_builder()
+        .from_id(from_id.pack())
+        .to_id(new_account_id.pack())
+        .args(Bytes::from(args).pack())
+        .build();
+    let db = store.begin_transaction();
+    let tip_block_hash = db.get_tip_block_hash().unwrap();
+    let run_result = generator
+        .execute_transaction(
+            &ChainView::new(&db, tip_block_hash),
+            &state,
+            &block_info,
+            &raw_tx,
+            L2TX_MAX_CYCLES,
+        )
+        .expect("Call getCodeSize");
+    assert_eq!(run_result.return_data.as_ref(), &[0u8; 32]);
+
+    //call getCodeHash("0xdB81D2b8154A10C6f25bC2a9225F403D954D0B65")
+    let input =
+        hex::decode("81ea4408000000000000000000000000db81d2b8154a10c6f25bc2a9225f403d954d0b65")?;
+    let block_info = new_block_info(block_producer.clone(), 1, 0);
+    let args = PolyjuiceArgsBuilder::default()
+        .gas_limit(228060)
+        .gas_price(1)
+        .value(0)
+        .input(&input)
+        .build();
+    let raw_tx = RawL2Transaction::new_builder()
+        .from_id(from_id.pack())
+        .to_id(new_account_id.pack())
+        .args(Bytes::from(args).pack())
+        .build();
+    let db = store.begin_transaction();
+    let tip_block_hash = db.get_tip_block_hash().unwrap();
+    let run_result = generator
+        .execute_transaction(
+            &ChainView::new(&db, tip_block_hash),
+            &state,
+            &block_info,
+            &raw_tx,
+            L2TX_MAX_CYCLES,
+        )
+        .expect("Call getCodeHash");
+    assert_eq!(run_result.return_data.as_ref(), &[0u8; 32]);
+
+    //call getCode("0xdB81D2b8154A10C6f25bC2a9225F403D954D0B65")
+    let input =
+        hex::decode("7e105ce2000000000000000000000000db81d2b8154a10c6f25bc2a9225f403d954d0b65")?;
+    let block_info = new_block_info(block_producer, 1, 0);
+    let args = PolyjuiceArgsBuilder::default()
+        .gas_limit(228060)
+        .gas_price(1)
+        .value(0)
+        .input(&input)
+        .build();
+    let raw_tx = RawL2Transaction::new_builder()
+        .from_id(from_id.pack())
+        .to_id(new_account_id.pack())
+        .args(Bytes::from(args).pack())
+        .build();
+    let db = store.begin_transaction();
+    let tip_block_hash = db.get_tip_block_hash().unwrap();
+    let run_result = generator
+        .execute_transaction(
+            &ChainView::new(&db, tip_block_hash),
+            &state,
+            &block_info,
+            &raw_tx,
+            L2TX_MAX_CYCLES,
+        )
+        .expect("Call getCode");
+    let mut target = [0u8; 64];
+    target[31] = 32;
+    assert_eq!(run_result.return_data.as_ref(), &target);
+    Ok(())
+}

polyjuice-tests/src/test_cases/evm-contracts/AbsentAddress.abi

@@ -0,0 +1 @@
+[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"getBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"getCode","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"getCodeHash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"getCodeSize","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

polyjuice-tests/src/test_cases/evm-contracts/AbsentAddress.bin

@@ -0,0 +1 @@
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

polyjuice-tests/src/test_cases/evm-contracts/AbsentAddress.sol

@@ -0,0 +1,21 @@
+pragma solidity ^0.8.4;
+
+contract AbsentAddress {
+    constructor() {}
+
+    function getBalance(address addr) public view returns (uint256) {
+        return addr.balance;
+    }
+
+    function getCode(address addr) public view returns (bytes memory) {
+        return addr.code;
+    }
+
+    function getCodeHash(address addr) public view returns (bytes32) {
+        return addr.codehash;
+    }
+
+    function getCodeSize(address addr) public view returns (uint256) {
+        return addr.code.length;
+    }
+}

polyjuice-tests/src/test_cases/mod.rs

@@ -29,6 +29,7 @@ pub(crate) mod invalid_sudt_erc20_proxy;
 pub(crate) mod sudt_erc20_proxy;
 pub(crate) mod sudt_erc20_proxy_attack_allowance;
 
+mod absent_address;
 mod address_collision;
 mod beacon_proxy;
 mod error;