squamsh

Author: tenthirtyone

src/chains/ethereum/ethereum/src/blockchain.ts

@@ -23,7 +23,11 @@ import type { Address as EthereumJsAddress } from "@ethereumjs/util";
 import type { InterpreterStep } from "@ethereumjs/evm";
 import { decode } from "@ganache/rlp";
 import { KECCAK256_RLP } from "@ethereumjs/util";
-import { Common } from "@ethereumjs/common";
+import {
+  Common,
+  parseGethGenesis,
+  Hardfork as ejsHardfork
+} from "@ethereumjs/common";
 import { EEI, VM } from "@ethereumjs/vm";
 import {
   EvmError as VmError,
@@ -106,6 +110,36 @@ type BlockchainTypedEvents = {
   stop: undefined;
 };
 
+const json = {
+  config: {
+    chainId: 19763,
+    homesteadBlock: 0,
+    eip150Block: 0,
+    eip155Block: 0,
+    eip158Block: 0,
+    byzantiumBlock: 0,
+    londonBlock: 0,
+    ethash: {}
+  },
+  nonce: "0xdeadbeefdeadbeef",
+  timestamp: "0x0",
+  extraData:
+    "0x0000000000000000000000000000000000000000000000000000000000000000",
+  gasLimit: "0x80000000",
+  difficulty: "0x20000",
+  mixHash: "0x0000000000000000000000000000000000000000000000000000000000000000",
+  coinbase: "0x0000000000000000000000000000000000000000",
+  alloc: {
+    "71562b71999873db5b286df957af199ec94617f7": {
+      balance: "0xffffffffffffffffffffffffff"
+    }
+  },
+  number: "0x0",
+  gasUsed: "0x0",
+  parentHash:
+    "0x0000000000000000000000000000000000000000000000000000000000000000"
+};
+
 interface Logger {
   log(message?: any, ...optionalParams: any[]): void;
 }
@@ -190,6 +224,22 @@ function createCommon(chainId: number, networkId: number, hardfork: Hardfork) {
   return common;
 }
 
+function createCommonFromGethGenesis(path: string, hardfork: Hardfork) {
+  let json;
+  try {
+    json = require(path);
+  } catch (e) {
+    console.log("Error: Could not load genesis.json at " + path);
+  }
+  // .fromGethGenesis treats 'chain' the same as .custom treats 'name'.
+  const common = Common.fromGethGenesis(json, { chain: "ganache", hardfork });
+
+  // as in createCommon, we do not support changing hardforks, remove hardfork listeners.
+  (common.on as any) = () => {};
+
+  return common;
+}
+
 export default class Blockchain extends Emittery<BlockchainTypedEvents> {
   #state: Status = Status.starting;
   #miner: Miner;
@@ -259,11 +309,20 @@ export default class Blockchain extends Emittery<BlockchainTypedEvents> {
         options.chain.chainId = Number(common.chainId());
       } else {
         await database.initialize();
-        common = this.common = createCommon(
-          options.chain.chainId,
-          options.chain.networkId,
-          options.chain.hardfork
-        );
+
+        if (options.chain.genesisPath) {
+          // From here, a valid path to a genesis.json runs -> unsure if/what breaks in ganache
+          common = this.common = createCommonFromGethGenesis(
+            process.cwd() + "/" + options.chain.genesisPath,
+            options.chain.hardfork
+          );
+        } else {
+          common = this.common = createCommon(
+            options.chain.chainId,
+            options.chain.networkId,
+            options.chain.hardfork
+          );
+        }
       }
 
       this.isPostMerge = this.common.gteHardfork("merge");

src/chains/ethereum/options/src/chain-options.ts

@@ -123,6 +123,12 @@ export type ChainConfig = {
         hardfork: Hardfork;
       };
     };
+    /**
+     * Specify a relative filepath for a genesis.json to configure the @ethereumjs/vm
+     */
+    readonly genesisPath: {
+      type: string;
+    };
 
     /**
      * Whether to report runtime errors from EVM code as RPC errors.
@@ -140,6 +146,7 @@ export type ChainConfig = {
       };
     };
   };
+  exclusiveGroups: [["chainId", "networkId", "genesisPath"]];
 };
 
 export const ChainOptions: Definitions<ChainConfig> = {
@@ -164,7 +171,8 @@ export const ChainOptions: Definitions<ChainConfig> = {
     cliDescription: "The currently configured chain id.",
     default: () => 1337,
     legacyName: "chainId",
-    cliType: "number"
+    cliType: "number",
+    conflicts: ["genesisPath"]
   },
   networkId: {
     normalize,
@@ -175,7 +183,8 @@ export const ChainOptions: Definitions<ChainConfig> = {
       "System time at process start or Network ID of forked blockchain if configured.",
     legacyName: "network_id",
     cliAliases: ["i", "networkId"],
-    cliType: "number"
+    cliType: "number",
+    conflicts: ["genesisPath"]
   },
   time: {
     normalize: rawInput => (rawInput !== undefined ? new Date(rawInput) : null),
@@ -203,6 +212,13 @@ export const ChainOptions: Definitions<ChainConfig> = {
     cliType: "string",
     cliChoices: HARDFORKS as Writeable<typeof HARDFORKS>
   },
+  genesisPath: {
+    normalize,
+    cliDescription: "Set a genesis.json file",
+    cliAliases: ["j", "json"],
+    cliType: "string",
+    conflicts: ["networkId", "chainId"]
+  },
   vmErrorsOnRPCResponse: {
     normalize,
     cliDescription:

src/packages/ganache/genesis.json

@@ -0,0 +1,27 @@
+{
+  "config": {
+    "chainId": 19763,
+    "homesteadBlock": 0,
+    "eip150Block": 0,
+    "eip155Block": 0,
+    "eip158Block": 0,
+    "byzantiumBlock": 0,
+    "londonBlock": 0,
+    "ethash": {}
+  },
+  "nonce": "0xdeadbeefdeadbeef",
+  "timestamp": "0x0",
+  "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000",
+  "gasLimit": "0x80000000",
+  "difficulty": "0x20000",
+  "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+  "coinbase": "0x0000000000000000000000000000000000000000",
+  "alloc": {
+    "71562b71999873db5b286df957af199ec94617f7": {
+      "balance": "0xffffffffffffffffffffffffff"
+    }
+  },
+  "number": "0x0",
+  "gasUsed": "0x0",
+  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
+}