Implement solana secret key storage and recovery

wallets/react-wallet-v2/package.json

@@ -11,6 +11,7 @@
     "@walletconnect/client": "experimental",
     "@walletconnect/utils": "experimental",
     "@json-rpc-tools/utils": "1.7.6",
+    "@solana/web3.js": "1.36.0",
     "@nextui-org/react": "1.0.2-beta.4",
     "mnemonic-keyring": "1.4.0",
     "next": "12.1.0",
@@ -18,7 +19,7 @@
     "react-dom": "17.0.2",
     "react-qr-reader-es6": "2.2.1-2",
     "framer-motion": "6.2.8",
-    "ethers": "5.5.4",
+    "ethers": "5.6.0",
     "valtio": "1.3.1",
     "react-code-blocks": "0.0.9-0",
     "@cosmjs/proto-signing": "0.27.1",
@@ -28,8 +29,8 @@
   "devDependencies": {
     "@walletconnect/types": "experimental",
     "@types/node": "17.0.21",
-    "@types/react": "17.0.39",
-    "eslint": "8.10.0",
+    "@types/react": "17.0.40",
+    "eslint": "8.11.0",
     "eslint-config-next": "12.1.0",
     "eslint-config-prettier": "8.5.0",
     "prettier": "2.5.1",

wallets/react-wallet-v2/src/components/AccountPicker.tsx

@@ -1,6 +1,7 @@
 import SettingsStore from '@/store/SettingsStore'
 import { cosmosAddresses } from '@/utils/CosmosWalletUtil'
 import { eip155Addresses } from '@/utils/EIP155WalletUtil'
+import { solanaAddresses } from '@/utils/SolanaWalletUtil'
 import { useSnapshot } from 'valtio'
 
 export default function AccountPicker() {
@@ -11,6 +12,7 @@ export default function AccountPicker() {
     SettingsStore.setAccount(account)
     SettingsStore.setEIP155Address(eip155Addresses[account])
     SettingsStore.setCosmosAddress(cosmosAddresses[account])
+    SettingsStore.setSolanaAddress(solanaAddresses[account])
   }
 
   return (

wallets/react-wallet-v2/src/components/RequestDetalilsCard.tsx

@@ -1,5 +1,6 @@
 import { COSMOS_MAINNET_CHAINS, TCosmosChain } from '@/data/COSMOSData'
 import { EIP155_CHAINS, TEIP155Chain } from '@/data/EIP155Data'
+import { SOLANA_MAINNET_CHAINS, TSolanaChain } from '@/data/SolanaData'
 import { Col, Divider, Row, Text } from '@nextui-org/react'
 import { Fragment } from 'react'
 
@@ -26,6 +27,7 @@ export default function RequesDetailsCard({ chains, protocol }: IProps) {
                 chain =>
                   EIP155_CHAINS[chain as TEIP155Chain]?.name ??
                   COSMOS_MAINNET_CHAINS[chain as TCosmosChain]?.name ??
+                  SOLANA_MAINNET_CHAINS[chain as TSolanaChain]?.name ??
                   chain
               )
               .join(', ')}

wallets/react-wallet-v2/src/data/SolanaData.ts

@@ -0,0 +1,25 @@
+/**
+ * Types
+ */
+export type TSolanaChain = keyof typeof SOLANA_MAINNET_CHAINS
+
+/**
+ * Chains
+ */
+export const SOLANA_MAINNET_CHAINS = {
+  'solana:4sGjMW1sUnHzSxGspuhpqLDx6wiyjNtZ': {
+    chainId: '4sGjMW1sUnHzSxGspuhpqLDx6wiyjNtZ',
+    name: 'Solana',
+    logo: '/chain-logos/solana-4sGjMW1sUnHzSxGspuhpqLDx6wiyjNtZ.png',
+    rgb: '30, 240, 166',
+    rpc: ''
+  }
+}
+
+/**
+ * Methods
+ */
+export const SOLANA_SIGNING_METHODS = {
+  SOLANA_SIGN_TRANSACTION: 'solana_signTransaction',
+  SOLANA_SIGN_MESSAGE: 'solana_signMessage'
+}

wallets/react-wallet-v2/src/hooks/useInitialization.ts

@@ -1,6 +1,7 @@
 import SettingsStore from '@/store/SettingsStore'
 import { createOrRestoreCosmosWallet } from '@/utils/CosmosWalletUtil'
 import { createOrRestoreEIP155Wallet } from '@/utils/EIP155WalletUtil'
+import { createOrRestoreSolanaWallet } from '@/utils/SolanaWalletUtil'
 import { createWalletConnectClient } from '@/utils/WalletConnectUtil'
 import { useCallback, useEffect, useState } from 'react'
 
@@ -11,9 +12,11 @@ export default function useInitialization() {
     try {
       const { eip155Addresses } = createOrRestoreEIP155Wallet()
       const { cosmosAddresses } = await createOrRestoreCosmosWallet()
+      const { solanaAddresses } = await createOrRestoreSolanaWallet()
 
       SettingsStore.setEIP155Address(eip155Addresses[0])
       SettingsStore.setCosmosAddress(cosmosAddresses[0])
+      SettingsStore.setSolanaAddress(solanaAddresses[0])
 
       await createWalletConnectClient()
 

wallets/react-wallet-v2/src/lib/Solana.ts

@@ -0,0 +1,19 @@
+import { Keypair } from '@solana/web3.js'
+
+export class Solana {
+  keypair: Keypair
+
+  constructor(keypair: Keypair) {
+    this.keypair = keypair
+  }
+
+  static init(secretKey?: Uint8Array) {
+    const keypair = secretKey ? Keypair.fromSecretKey(secretKey) : Keypair.generate()
+
+    return new Solana(keypair)
+  }
+
+  public async getAccount() {
+    return await this.keypair.publicKey.toBase58()
+  }
+}

wallets/react-wallet-v2/src/pages/index.tsx

@@ -3,13 +3,14 @@ import AccountPicker from '@/components/AccountPicker'
 import PageHeader from '@/components/PageHeader'
 import { COSMOS_MAINNET_CHAINS } from '@/data/COSMOSData'
 import { EIP155_MAINNET_CHAINS, EIP155_TEST_CHAINS } from '@/data/EIP155Data'
+import { SOLANA_MAINNET_CHAINS } from '@/data/SolanaData'
 import SettingsStore from '@/store/SettingsStore'
 import { Text } from '@nextui-org/react'
 import { Fragment } from 'react'
 import { useSnapshot } from 'valtio'
 
 export default function HomePage() {
-  const { testNets, eip155Address, cosmosAddress } = useSnapshot(SettingsStore.state)
+  const { testNets, eip155Address, cosmosAddress, solanaAddress } = useSnapshot(SettingsStore.state)
 
   return (
     <Fragment>
@@ -25,6 +26,9 @@ export default function HomePage() {
       {Object.values(COSMOS_MAINNET_CHAINS).map(({ name, logo, rgb }) => (
         <AccountCard key={name} name={name} logo={logo} rgb={rgb} address={cosmosAddress} />
       ))}
+      {Object.values(SOLANA_MAINNET_CHAINS).map(({ name, logo, rgb }) => (
+        <AccountCard key={name} name={name} logo={logo} rgb={rgb} address={solanaAddress} />
+      ))}
 
       {testNets ? (
         <Fragment>

wallets/react-wallet-v2/src/store/SettingsStore.ts

@@ -8,6 +8,7 @@ interface State {
   account: number
   eip155Address: string
   cosmosAddress: string
+  solanaAddress: string
 }
 
 /**
@@ -17,7 +18,8 @@ const state = proxy<State>({
   testNets: typeof localStorage !== 'undefined' ? Boolean(localStorage.getItem('TEST_NETS')) : true,
   account: 0,
   eip155Address: '',
-  cosmosAddress: ''
+  cosmosAddress: '',
+  solanaAddress: ''
 })
 
 /**
@@ -38,6 +40,10 @@ const SettingsStore = {
     state.cosmosAddress = cosmosAddresses
   },
 
+  setSolanaAddress(solanaAddress: string) {
+    state.solanaAddress = solanaAddress
+  },
+
   toggleTestNets() {
     state.testNets = !state.testNets
     if (state.testNets) {

wallets/react-wallet-v2/src/utils/HelperUtil.ts

@@ -83,3 +83,10 @@ export function isEIP155Chain(chain: string) {
 export function isCosmosChain(chain: string) {
   return chain.includes('cosmos')
 }
+
+/**
+ * Check if chain is part of SOLANA standard
+ */
+export function isSolanaChain(chain: string) {
+  return chain.includes('solana')
+}

wallets/react-wallet-v2/src/utils/SolanaWalletUtil.ts

@@ -0,0 +1,52 @@
+import { Solana } from '@/lib/Solana'
+
+export let wallet1: Solana
+export let wallet2: Solana
+export let solanaWallets: Record<string, Solana>
+export let solanaAddresses: string[]
+
+let address1: string
+let address2: string
+
+/**
+ * Utilities
+ */
+export async function createOrRestoreSolanaWallet() {
+  const secretKey1 = localStorage.getItem('SOLANA_SECRET_KEY_1')
+  const secretKey2 = localStorage.getItem('SOLANA_SECRET_KEY_2')
+
+  if (secretKey1 && secretKey2) {
+    const secretArray1: number[] = Object.values(JSON.parse(secretKey1))
+    const secretArray2: number[] = Object.values(JSON.parse(secretKey2))
+
+    wallet1 = Solana.init(Uint8Array.from(secretArray1))
+    wallet2 = Solana.init(Uint8Array.from(secretArray2))
+    address1 = await wallet1.getAccount()
+    address2 = await wallet2.getAccount()
+  } else {
+    wallet1 = Solana.init()
+    wallet2 = Solana.init()
+    address1 = await wallet1.getAccount()
+    address2 = await wallet2.getAccount()
+    // Don't store secretKey in local storage in a production project!
+    localStorage.setItem(
+      'SOLANA_SECRET_KEY_1',
+      JSON.stringify(Array.from(wallet1.keypair.secretKey))
+    )
+    localStorage.setItem(
+      'SOLANA_SECRET_KEY_2',
+      JSON.stringify(Array.from(wallet2.keypair.secretKey))
+    )
+  }
+
+  solanaWallets = {
+    [address1]: wallet1,
+    [address2]: wallet2
+  }
+  solanaAddresses = Object.keys(solanaWallets)
+
+  return {
+    solanaWallets,
+    solanaAddresses
+  }
+}

wallets/react-wallet-v2/src/views/SessionProposalModal.tsx

@@ -5,10 +5,12 @@ import RequestMethodCard from '@/components/RequestMethodCard'
 import RequestModalContainer from '@/components/RequestModalContainer'
 import { COSMOS_MAINNET_CHAINS, TCosmosChain } from '@/data/COSMOSData'
 import { EIP155_CHAINS, TEIP155Chain } from '@/data/EIP155Data'
+import { SOLANA_MAINNET_CHAINS, TSolanaChain } from '@/data/SolanaData'
 import ModalStore from '@/store/ModalStore'
 import { cosmosAddresses } from '@/utils/CosmosWalletUtil'
 import { eip155Addresses } from '@/utils/EIP155WalletUtil'
-import { isCosmosChain, isEIP155Chain } from '@/utils/HelperUtil'
+import { isCosmosChain, isEIP155Chain, isSolanaChain } from '@/utils/HelperUtil'
+import { solanaAddresses } from '@/utils/SolanaWalletUtil'
 import { walletConnectClient } from '@/utils/WalletConnectUtil'
 import { Button, Col, Divider, Modal, Row, Text } from '@nextui-org/react'
 import { Fragment, useState } from 'react'
@@ -16,6 +18,7 @@ import { Fragment, useState } from 'react'
 export default function SessionProposalModal() {
   const [selectedEIP155, setSelectedEip155] = useState<string[]>([])
   const [selectedCosmos, setSelectedCosmos] = useState<string[]>([])
+  const [selectedSolana, setSelectedSolana] = useState<string[]>([])
 
   // Get proposal data and wallet address from store
   const proposal = ModalStore.state.data?.proposal
@@ -50,6 +53,16 @@ export default function SessionProposalModal() {
     }
   }
 
+  // Add / remove address from Solana selection
+  function onSelectSolana(address: string) {
+    if (selectedSolana.includes(address)) {
+      const newAddresses = selectedSolana.filter(a => a !== address)
+      setSelectedSolana(newAddresses)
+    } else {
+      setSelectedSolana([...selectedSolana, address])
+    }
+  }
+
   // Hanlde approve action
   async function onApprove() {
     if (proposal) {
@@ -130,6 +143,29 @@ export default function SessionProposalModal() {
                 </Row>
               </Fragment>
             )
+          } else if (isSolanaChain(chain)) {
+            return (
+              <Fragment>
+                <Divider y={2} />
+
+                <Row>
+                  <Col>
+                    <Text h5>
+                      {`Select ${SOLANA_MAINNET_CHAINS[chain as TSolanaChain].name} Accounts`}
+                    </Text>
+                    {solanaAddresses.map((address, index) => (
+                      <AccountSelectCard
+                        key={address}
+                        address={address}
+                        index={index}
+                        onSelect={() => onSelectSolana(`${chain}:${address}`)}
+                        selected={selectedSolana.includes(`${chain}:${address}`)}
+                      />
+                    ))}
+                  </Col>
+                </Row>
+              </Fragment>
+            )
           }
         })}
       </RequestModalContainer>