use fixed latest blocknumber when undefined (#245)

* use fixed latest blocknumber when undefined

* fix test

* fix test

README.md

@@ -444,7 +444,6 @@ ItyFuzz attempts to fetch storage from blockchain nodes when SLOAD is encountere
 There are three ways of fetching:
 
 - OneByOne: fetch one slot at a time. This is the default mode. It is slow but never fails.
-- All: fetch all slots at once using custom API `eth_getStorageAll` on our nodes. This is the fastest mode, but it may fail if the contract is too large.
 - Dump: dump storage using debug API `debug_storageRangeAt`. This only works for ETH (for now) and fails most of the time.
 
 

README_CN.md

@@ -167,7 +167,6 @@ ItyFuzz 将从 Etherscan 拉取合约的 ABI 并 fuzz 它。如果 ItyFuzz 遇
 当遇到 SLOAD 与目标未初始化的时，ItyFuzz 尝试从区块链节点获取存储。有三种获取方式：
 
 - OneByOne：一次获取一个 slot 。这是默认模式。它很慢，但不会失败。
-- All：使用我们节点上的自定义 API `eth_getStorageAll` 一次性获取所有 slot 。这是最快的模式，但如果合约太大，可能会失败。
 - Dump：使用 debug API `debug_storageRangeAt` 来转储存储。这只适用于 ETH（目前），并且很容易失败。
 
 ### 构造函数参数

src/evm/config.rs

@@ -2,17 +2,17 @@
 use crate::evm::contract_utils::{ContractInfo, ContractLoader};
 use crate::evm::onchain::endpoints::{OnChainConfig, PriceOracle};
 
+use crate::evm::blaz::builder::BuildJob;
+use crate::evm::blaz::offchain_artifacts::OffChainArtifact;
+use crate::evm::blaz::offchain_config::OffchainConfig;
 use crate::evm::oracles::erc20::IERC20OracleFlashloan;
+use crate::evm::types::EVMAddress;
 use crate::oracle::{Oracle, Producer};
 use std::cell::RefCell;
 use std::collections::HashSet;
+use std::fmt::{self, Debug};
 use std::fs::File;
 use std::rc::Rc;
-use std::fmt::{self, Debug};
-use crate::evm::blaz::builder::BuildJob;
-use crate::evm::blaz::offchain_artifacts::OffChainArtifact;
-use crate::evm::blaz::offchain_config::OffchainConfig;
-use crate::evm::types::EVMAddress;
 
 pub enum FuzzerTypes {
     CMP,
@@ -23,15 +23,13 @@ pub enum FuzzerTypes {
 #[derive(Copy, Clone)]
 pub enum StorageFetchingMode {
     Dump,
-    All,
     OneByOne,
 }
 
 impl StorageFetchingMode {
     pub fn from_str(s: &str) -> Option<Self> {
         match s {
             "dump" => Some(StorageFetchingMode::Dump),
-            "all" => Some(StorageFetchingMode::All),
             "onebyone" => Some(StorageFetchingMode::OneByOne),
             _ => None,
         }
@@ -82,10 +80,12 @@ pub struct Config<VS, Addr, Code, By, Loc, SlotTy, Out, I, S, CI> {
     pub local_files_basedir_pattern: Option<String>,
 }
 
-impl<VS, Addr, Code, By, Loc, SlotTy, Out, I, S, CI> Debug for Config<VS, Addr, Code, By, Loc, SlotTy, Out, I, S, CI> {
+impl<VS, Addr, Code, By, Loc, SlotTy, Out, I, S, CI> Debug
+    for Config<VS, Addr, Code, By, Loc, SlotTy, Out, I, S, CI>
+{
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.debug_struct("Config")
-         .field("onchain", &self.onchain)
+            .field("onchain", &self.onchain)
             // .field("onchain_storage_fetching", &self.onchain_storage_fetching)
             .field("flashloan", &self.flashloan)
             .field("concolic", &self.concolic)
@@ -112,6 +112,6 @@ impl<VS, Addr, Code, By, Loc, SlotTy, Out, I, S, CI> Debug for Config<VS, Addr,
             .field("typed_bug", &self.typed_bug)
             .field("selfdestruct_bug", &self.selfdestruct_bug)
             // .field("builder", &self.builder)
-         .finish()
+            .finish()
     }
 }