chore: add Solana shared utilities and constants

package.json

@@ -348,7 +348,7 @@
     "@metamask/snaps-utils": "^8.4.1",
     "@metamask/transaction-controller": "^38.1.0",
     "@metamask/user-operation-controller": "^13.0.0",
-    "@metamask/utils": "^9.3.0",
+    "@metamask/utils": "^10.0.1",
     "@ngraveio/bc-ur": "^1.1.12",
     "@noble/hashes": "^1.3.3",
     "@popperjs/core": "^2.4.0",
@@ -357,6 +357,7 @@
     "@sentry/browser": "^8.33.1",
     "@sentry/types": "^8.33.1",
     "@sentry/utils": "^8.33.1",
+    "@solana/web3.js": "^1.95.4",
     "@swc/core": "1.4.11",
     "@trezor/connect-web": "^9.4.0",
     "@zxing/browser": "^0.1.4",
@@ -745,7 +746,8 @@
       "resolve-url-loader>es6-iterator>d>es5-ext": false,
       "resolve-url-loader>es6-iterator>d>es5-ext>esniff>es5-ext": false,
       "level>classic-level": false,
-      "jest-preview": false
+      "jest-preview": false,
+      "@solana/web3.js>bigint-buffer": true
     }
   },
   "packageManager": "yarn@4.4.1"

shared/constants/multichain/assets.ts

@@ -2,9 +2,14 @@ import { MultichainNetworks } from './networks';
 
 export const MULTICHAIN_NATIVE_CURRENCY_TO_CAIP19 = {
   BTC: `${MultichainNetworks.BITCOIN}/slip44:0`,
+  SOL: `${MultichainNetworks.SOLANA}/slip44:501`,
 } as const;
 
 export enum MultichainNativeAssets {
   BITCOIN = `${MultichainNetworks.BITCOIN}/slip44:0`,
   BITCOIN_TESTNET = `${MultichainNetworks.BITCOIN_TESTNET}/slip44:0`,
+
+  SOLANA = `${MultichainNetworks.SOLANA}/slip44:501`,
+  SOLANA_DEVNET = `${MultichainNetworks.SOLANA_DEVNET}/slip44:501`,
+  SOLANA_TESTNET = `${MultichainNetworks.SOLANA_TESTNET}/slip44:501`,
 }

shared/constants/multichain/networks.ts

@@ -1,5 +1,9 @@
 import { CaipChainId } from '@metamask/utils';
-import { isBtcMainnetAddress, isBtcTestnetAddress } from '../../lib/multichain';
+import {
+  isBtcMainnetAddress,
+  isBtcTestnetAddress,
+  isSolanaAddress,
+} from '../../lib/multichain';
 
 export type ProviderConfigWithImageUrl = {
   rpcUrl?: string;
@@ -21,24 +25,39 @@ export type MultichainProviderConfig = ProviderConfigWithImageUrl & {
 export enum MultichainNetworks {
   BITCOIN = 'bip122:000000000019d6689c085ae165831e93',
   BITCOIN_TESTNET = 'bip122:000000000933ea01ad0ee984209779ba',
+
+  SOLANA = 'solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp',
+  SOLANA_DEVNET = 'solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1',
+  SOLANA_TESTNET = 'solana:4uhcVJyU9pJkvQyS88uRDiswHXSCkY3z',
 }
 
 export const BITCOIN_TOKEN_IMAGE_URL = './images/bitcoin-logo.svg';
+export const SOLANA_TOKEN_IMAGE_URL = './images/solana-logo.svg';
 
 export const MULTICHAIN_NETWORK_BLOCK_EXPLORER_URL_MAP = {
   [MultichainNetworks.BITCOIN]: 'https://blockstream.info/address',
   [MultichainNetworks.BITCOIN_TESTNET]:
     'https://blockstream.info/testnet/address',
+
+  [MultichainNetworks.SOLANA]: 'https://explorer.solana.com/',
+  [MultichainNetworks.SOLANA_DEVNET]:
+    'https://explorer.solana.com/?cluster=devnet',
+  [MultichainNetworks.SOLANA_TESTNET]:
+    'https://explorer.solana.com/?cluster=testnet',
 } as const;
 
 export const MULTICHAIN_TOKEN_IMAGE_MAP = {
   [MultichainNetworks.BITCOIN]: BITCOIN_TOKEN_IMAGE_URL,
+  [MultichainNetworks.SOLANA]: SOLANA_TOKEN_IMAGE_URL,
 } as const;
 
 export const MULTICHAIN_PROVIDER_CONFIGS: Record<
   CaipChainId,
   MultichainProviderConfig
 > = {
+  /**
+   * Bitcoin
+   */
   [MultichainNetworks.BITCOIN]: {
     chainId: MultichainNetworks.BITCOIN,
     rpcUrl: '', // not used
@@ -69,4 +88,53 @@ export const MULTICHAIN_PROVIDER_CONFIGS: Record<
     },
     isAddressCompatible: isBtcTestnetAddress,
   },
+  /**
+   * Solana
+   */
+  [MultichainNetworks.SOLANA]: {
+    chainId: MultichainNetworks.SOLANA,
+    rpcUrl: '', // not used
+    ticker: 'SOL',
+    nickname: 'Solana',
+    id: 'solana-mainnet',
+    type: 'rpc',
+    rpcPrefs: {
+      imageUrl: MULTICHAIN_TOKEN_IMAGE_MAP[MultichainNetworks.SOLANA],
+      blockExplorerUrl:
+        MULTICHAIN_NETWORK_BLOCK_EXPLORER_URL_MAP[MultichainNetworks.SOLANA],
+    },
+    isAddressCompatible: isSolanaAddress,
+  },
+  [MultichainNetworks.SOLANA_DEVNET]: {
+    chainId: MultichainNetworks.SOLANA_DEVNET,
+    rpcUrl: '', // not used
+    ticker: 'SOL',
+    nickname: 'Solana (devnet)',
+    id: 'solana-devnet',
+    type: 'rpc',
+    rpcPrefs: {
+      imageUrl: MULTICHAIN_TOKEN_IMAGE_MAP[MultichainNetworks.SOLANA],
+      blockExplorerUrl:
+        MULTICHAIN_NETWORK_BLOCK_EXPLORER_URL_MAP[
+          MultichainNetworks.SOLANA_DEVNET
+        ],
+    },
+    isAddressCompatible: isSolanaAddress,
+  },
+  [MultichainNetworks.SOLANA_TESTNET]: {
+    chainId: MultichainNetworks.SOLANA_TESTNET,
+    rpcUrl: '', // not used
+    ticker: 'SOL',
+    nickname: 'Solana (testnet)',
+    id: 'solana-testnet',
+    type: 'rpc',
+    rpcPrefs: {
+      imageUrl: MULTICHAIN_TOKEN_IMAGE_MAP[MultichainNetworks.SOLANA],
+      blockExplorerUrl:
+        MULTICHAIN_NETWORK_BLOCK_EXPLORER_URL_MAP[
+          MultichainNetworks.SOLANA_TESTNET
+        ],
+    },
+    isAddressCompatible: isSolanaAddress,
+  },
 };

shared/lib/multichain.test.ts

@@ -3,6 +3,7 @@ import {
   getCaipNamespaceFromAddress,
   isBtcMainnetAddress,
   isBtcTestnetAddress,
+  isSolanaAddress,
 } from './multichain';
 
 const BTC_MAINNET_ADDRESSES = [
@@ -61,6 +62,20 @@ describe('multichain', () => {
     );
   });
 
+  describe('isSolanaAddress', () => {
+    // @ts-expect-error This is missing from the Mocha type definitions
+    it.each(SOL_ADDRESSES)(
+      'returns true if address is a valid Solana address: %s',
+      (address: string) => {
+        expect(isSolanaAddress(address)).toBe(true);
+      },
+    );
+
+    it('should return false for invalid Solana addresses', () => {
+      expect(isSolanaAddress('invalid')).toBe(false);
+    });
+  });
+
   describe('getChainTypeFromAddress', () => {
     // @ts-expect-error This is missing from the Mocha type definitions
     it.each([...BTC_MAINNET_ADDRESSES, ...BTC_TESTNET_ADDRESSES])(
@@ -87,7 +102,7 @@ describe('multichain', () => {
       'returns ChainType.Ethereum for non-supported address: %s',
       (address: string) => {
         expect(getCaipNamespaceFromAddress(address)).toBe(
-          KnownCaipNamespace.Eip155,
+          KnownCaipNamespace.Solana,
         );
       },
     );

shared/lib/multichain.ts

@@ -1,5 +1,6 @@
 import { CaipNamespace, KnownCaipNamespace } from '@metamask/utils';
 import { validate, Network } from 'bitcoin-address-validation';
+import { PublicKey } from '@solana/web3.js';
 
 /**
  * Returns whether an address is on the Bitcoin mainnet.
@@ -28,6 +29,25 @@ export function isBtcTestnetAddress(address: string): boolean {
   return validate(address, Network.testnet);
 }
 
+/**
+ * Returns whether an address is a valid Solana address, specifically an account's.
+ * Derived addresses (like Program's) will return false.
+ * See: https://stackoverflow.com/questions/71200948/how-can-i-validate-a-solana-wallet-address-with-web3js
+ *
+ * @param address - The address to check.
+ * @returns `true` if the address is a valid Solana address, `false` otherwise.
+ */
+export function isSolanaAddress(address: string): boolean {
+  try {
+    const solanaPublicKey = new PublicKey(address);
+    const isOnCurve = PublicKey.isOnCurve(solanaPublicKey);
+
+    return isOnCurve;
+  } catch (error) {
+    return false;
+  }
+}
+
 /**
  * Returns the associated chain's type for the given address.
  *
@@ -38,6 +58,11 @@ export function getCaipNamespaceFromAddress(address: string): CaipNamespace {
   if (isBtcMainnetAddress(address) || isBtcTestnetAddress(address)) {
     return KnownCaipNamespace.Bip122;
   }
+
+  if (isSolanaAddress(address)) {
+    return KnownCaipNamespace.Solana;
+  }
+
   // Defaults to "Ethereum" for all other cases for now.
   return KnownCaipNamespace.Eip155;
 }

yarn.lock

@@ -6509,6 +6509,23 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@metamask/utils@npm:^10.0.1":
+  version: 10.0.1
+  resolution: "@metamask/utils@npm:10.0.1"
+  dependencies:
+    "@ethereumjs/tx": "npm:^4.2.0"
+    "@metamask/superstruct": "npm:^3.1.0"
+    "@noble/hashes": "npm:^1.3.1"
+    "@scure/base": "npm:^1.1.3"
+    "@types/debug": "npm:^4.1.7"
+    debug: "npm:^4.3.4"
+    pony-cause: "npm:^2.1.10"
+    semver: "npm:^7.5.4"
+    uuid: "npm:^9.0.1"
+  checksum: 10/c8e3d7578d05a1da4abb6c6712ec78ef6990801269f6529f4bb237b7d6e228d10a40738ccab81ad554f2fd51670267d086dc5be1a31c6d1f7040d4c0469d9d13
+  languageName: node
+  linkType: hard
+
 "@metamask/utils@npm:^8.1.0, @metamask/utils@npm:^8.2.0, @metamask/utils@npm:^8.3.0":
   version: 8.5.0
   resolution: "@metamask/utils@npm:8.5.0"
@@ -6526,7 +6543,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@metamask/utils@npm:^9.0.0, @metamask/utils@npm:^9.1.0, @metamask/utils@npm:^9.2.1, @metamask/utils@npm:^9.3.0":
+"@metamask/utils@npm:^9.0.0, @metamask/utils@npm:^9.1.0, @metamask/utils@npm:^9.2.1":
   version: 9.3.0
   resolution: "@metamask/utils@npm:9.3.0"
   dependencies:
@@ -8064,6 +8081,29 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@solana/web3.js@npm:^1.95.4":
+  version: 1.95.4
+  resolution: "@solana/web3.js@npm:1.95.4"
+  dependencies:
+    "@babel/runtime": "npm:^7.25.0"
+    "@noble/curves": "npm:^1.4.2"
+    "@noble/hashes": "npm:^1.4.0"
+    "@solana/buffer-layout": "npm:^4.0.1"
+    agentkeepalive: "npm:^4.5.0"
+    bigint-buffer: "npm:^1.1.5"
+    bn.js: "npm:^5.2.1"
+    borsh: "npm:^0.7.0"
+    bs58: "npm:^4.0.1"
+    buffer: "npm:6.0.3"
+    fast-stable-stringify: "npm:^1.0.0"
+    jayson: "npm:^4.1.1"
+    node-fetch: "npm:^2.7.0"
+    rpc-websockets: "npm:^9.0.2"
+    superstruct: "npm:^2.0.2"
+  checksum: 10/353e04ac1110035ff108f16af4029c7a98f71cce841d45877c9bc4a354cdc58a051681603c92289b81e3dc5ef6b1567c6f866e4ba56a434db145e38a5a41d276
+  languageName: node
+  linkType: hard
+
 "@sovpro/delimited-stream@npm:^1.1.0":
   version: 1.1.0
   resolution: "@sovpro/delimited-stream@npm:1.1.0"
@@ -26472,7 +26512,7 @@ __metadata:
     "@metamask/test-dapp": "npm:8.7.0"
     "@metamask/transaction-controller": "npm:^38.1.0"
     "@metamask/user-operation-controller": "npm:^13.0.0"
-    "@metamask/utils": "npm:^9.3.0"
+    "@metamask/utils": "npm:^10.0.1"
     "@ngraveio/bc-ur": "npm:^1.1.12"
     "@noble/hashes": "npm:^1.3.3"
     "@octokit/core": "npm:^3.6.0"
@@ -26489,6 +26529,7 @@ __metadata:
     "@sentry/cli": "npm:^2.19.4"
     "@sentry/types": "npm:^8.33.1"
     "@sentry/utils": "npm:^8.33.1"
+    "@solana/web3.js": "npm:^1.95.4"
     "@storybook/addon-a11y": "npm:^7.6.20"
     "@storybook/addon-actions": "npm:^7.6.20"
     "@storybook/addon-designs": "npm:^7.0.9"