Rainbow on Binance Smart Chain

Makefile

@@ -0,0 +1,68 @@
+help:
+	@echo Deploy rainbow bridge
+	@echo 1 run "make init" first time only and one time.
+	@echo 2 run "make start-bsc" or "make start-ethash"
+	@echo 3 run "make gen-contarcts"
+	@echo 4 run "make deploy-contarcts"
+	@echo 5 run "make start-relayer"
+	@echo 6 run "stop-all"
+
+init: yarn-init gen-contracts
+
+yarn-init:
+	yarn
+	yarn install
+
+# generate ether contracts
+gen-contracts:
+	cd contracts/eth/nearbridge/ && yarn && yarn build
+	cd contracts/eth/nearprover/ && yarn && yarn build
+
+# start near blockchain and connect with ganache.
+start-ethash:
+	cli/index.js clean
+	cli/index.js prepare
+	cli/index.js start near-node
+	cli/index.js start ganache
+
+# start near blockchain and connect with binance test net.
+start-bsc:
+	cli/index.js clean
+	cli/index.js prepare
+	cli/index.js start near-node
+	cli/index.js start binance-smart-chain \
+	--eth-node-url https://data-seed-prebsc-1-s1.binance.org:8545 \
+	--eth-master-sk 0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501200
+
+# deploy contracts
+full-contracts:
+	cli/index.js init-near-contracts
+	cli/index.js init-eth-ed25519
+	cli/index.js init-eth-client --eth-client-lock-eth-amount 1000 --eth-client-lock-duration 10
+	cli/index.js init-eth-prover
+	cli/index.js init-eth-erc20
+	cli/index.js init-eth-locker
+	cli/index.js init-near-token-factory
+
+# deploy contracts
+light-bsc-contracts:
+	cli/index.js init-near-contracts
+	cli/index.js init-near-token-factory
+
+# start-relayer eth2near-relay, near2eth-relay and bridge-watchdog
+start-relayer:
+	cli/index.js start eth2near-relay
+	cli/index.js start near2eth-relay
+	cli/index.js start bridge-watchdog
+	pm2 logs
+
+stop-all:
+	cli/index.js stop all
+
+build-eth-client:
+	cd contracts/near/eth-client && sudo ./build.sh
+
+test-eth-client:
+	cd contracts/near/eth-client && sudo ./test.sh
+
+.PHONY: help init yarn-init gen-contracts start-bsc light-bsc-contracts start-relayer stop-all build-eth-client test-eth-client start-ethash

cli/commands/start/binance-smart-chain.js

@@ -0,0 +1,25 @@
+// Binance Smart chain configurations to connect with testnet
+class StartBinanceSmartChainNodeCommand {
+  static async execute ({ ethNodeUrl, ethMasterSk, nearClientValidateHeader }) {
+    if (nearClientValidateHeader !== 'true' && nearClientValidateHeader !== 'false') {
+      nearClientValidateHeader = 'true'
+    }
+
+    if (ethNodeUrl === '') {
+      throw new Error('--eth-node-url not set')
+    }
+
+    if (ethMasterSk === '') {
+      throw new Error('--eth-master-sk not set')
+    }
+
+    return {
+      ethNodeUrl: ethNodeUrl,
+      ethMasterSk: ethMasterSk,
+      nearClientValidateHeader: nearClientValidateHeader,
+      nearClientValidateHeaderMode: 'bsc'
+    }
+  }
+}
+
+exports.StartBinanceSmartChainNodeCommand = StartBinanceSmartChainNodeCommand

cli/commands/start/eth2near-relay.js

@@ -8,7 +8,7 @@ const { nearAPI } = require('rainbow-bridge-utils')
 const path = require('path')
 
 class StartEth2NearRelayCommand {
-  static async execute({
+  static async execute ({
     daemon,
     nearNetworkId,
     nearNodeUrl,
@@ -18,7 +18,8 @@ class StartEth2NearRelayCommand {
     totalSubmitBlock,
     gasPerTransaction,
     ethNodeUrl,
-    metricsPort
+    metricsPort,
+    nearClientValidateHeaderMode
   }) {
     if (daemon === 'true') {
       ProcessManager.connect((err) => {
@@ -75,7 +76,7 @@ class StartEth2NearRelayCommand {
       )
       await clientContract.accessKeyInit()
       console.log('Initializing eth2near-relay...', { ethNodeUrl, metricsPort })
-      relay.initialize(clientContract, { ethNodeUrl, totalSubmitBlock, gasPerTransaction, metricsPort, nearNetworkId })
+      relay.initialize(clientContract, { ethNodeUrl, totalSubmitBlock, gasPerTransaction, metricsPort, nearNetworkId, nearClientValidateHeaderMode })
       console.log('Starting eth2near-relay...')
       await relay.run()
     }

cli/commands/start/ganache.js

@@ -24,7 +24,8 @@ class StartGanacheNodeCommand {
     return {
       ethNodeUrl: 'ws://localhost:9545',
       ethMasterSk: '0x2bdd21761a483f71054e14f5b827213567971c676928d9a1808cbfa4b7501200',
-      nearClientValidateEthash: 'false'
+      nearClientValidateHeader: 'false',
+      nearClientValidateHeaderMode: 'ethash'
     }
   }
 }

cli/index.js

@@ -14,6 +14,7 @@ const {
 } = require('./commands/start/near2eth-relay.js')
 const { StartWatchdogCommand } = require('./commands/start/watchdog.js')
 const { StartGanacheNodeCommand } = require('./commands/start/ganache.js')
+const { StartBinanceSmartChainNodeCommand } = require('./commands/start/binance-smart-chain.js')
 const { StartLocalNearNodeCommand } = require('./commands/start/near.js')
 const { AddressWatcherCommand } = require('./commands/start/address-watcher.js')
 const { StopManagedProcessCommand } = require('./commands/stop/process.js')
@@ -93,10 +94,16 @@ RainbowConfig.declareOption(
   '100000000000000000000000000'
 )
 RainbowConfig.declareOption(
-  'near-client-validate-ethash',
-  'Whether validate ethash of submitted eth block, should set to true on mainnet and false on PoA testnets',
+  'near-client-validate-header',
+  'Whether validate header of submitted eth block, should set to true on mainnet(s) and false on PoA testnets',
   'true'
 )
+
+RainbowConfig.declareOption(
+  'near-client-validate-header-mode',
+  'Choose between ethash and bsc',
+  'ethash'
+)
 RainbowConfig.declareOption(
   'hashes-gc-threshold',
   'Events that happen past this threshold cannot be verified by the client.',
@@ -334,6 +341,16 @@ RainbowConfig.addOptions(
   []
 )
 
+RainbowConfig.addOptions(
+  startCommand.command('binance-smart-chain'),
+  StartBinanceSmartChainNodeCommand.execute,
+  [
+    'eth-node-url',
+    'eth-master-sk',
+    'near-client-validate-header'
+  ]
+)
+
 RainbowConfig.addOptions(
   startCommand.command('eth2near-relay'),
   StartEth2NearRelayCommand.execute,
@@ -347,7 +364,8 @@ RainbowConfig.addOptions(
     'total-submit-block',
     'gas-per-transaction',
     'daemon',
-    'metrics-port'
+    'metrics-port',
+    'near-client-validate-header-mode'
   ]
 )
 
@@ -455,7 +473,8 @@ RainbowConfig.addOptions(
     'near-client-sk',
     'near-client-contract-path',
     'near-client-init-balance',
-    'near-client-validate-ethash',
+    'near-client-validate-header',
+    'near-client-validate-header-mode',
     'near-client-trusted-signer',
     'hashes-gc-threshold',
     'finalized-gc-threshold',
@@ -909,6 +928,6 @@ RainbowConfig.addOptions(
   ['near-node-url']
 )
 
-  ; (async () => {
-    await program.parseAsync(process.argv)
-  })()
+; (async () => {
+  await program.parseAsync(process.argv)
+})()

cli/init/near-contracts.js

@@ -10,7 +10,7 @@ const {
 } = require('rainbow-bridge-eth2near-block-relay')
 
 class InitNearContracts {
-  static async execute({
+  static async execute ({
     nearMasterAccount,
     nearMasterSk,
     nearClientAccount,
@@ -26,7 +26,8 @@ class InitNearContracts {
     nearProverInitBalance,
     nearNodeUrl,
     nearNetworkId,
-    nearClientValidateEthash,
+    nearClientValidateHeader,
+    nearClientValidateHeaderMode,
     nearClientTrustedSigner,
     ethNodeUrl
   }) {
@@ -97,12 +98,24 @@ class InitNearContracts {
       nearClientAccount
     )
     const robustWeb3 = new RobustWeb3(ethNodeUrl)
+
+    // get chain id used only by the bsc verify header.
+    const chainID = await robustWeb3.web3.eth.net.getId()
+
+    // check if the nearClientValidateHeaderMode is either 'ethash' or 'bsc' if not set
+    // 'ethash' as default
+    if (nearClientValidateHeaderMode !== 'ethash' && nearClientValidateHeaderMode !== 'bsc') {
+      nearClientValidateHeaderMode = 'ethash'
+    }
+
     await clientContract.maybeInitialize(
       hashesGcThreshold,
       finalizedGcThreshold,
       numConfirmations,
-      nearClientValidateEthash === 'true',
+      nearClientValidateHeader === 'true',
+      nearClientValidateHeaderMode,
       nearClientTrustedSigner || null,
+      chainID,
       robustWeb3,
       nearNetworkId
     )