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{ TransportStatusError } from '@ledgerhq/hw-transport';\nimport type Transport from '@ledgerhq/hw-transport';\n\nimport { ERC20_WRITE_SELECTORS, NFT_ONLY_SELECTORS } from './constants';\nimport {\n AppConfigurationResponse,\n GetAppNameAndVersionResponse,\n GetPublicKeyParams,\n GetPublicKeyResponse,\n LedgerBridge,\n LedgerSignDelegationAuthorizationParams,\n LedgerSignDelegationAuthorizationResponse,\n LedgerSignMessageParams,\n LedgerSignMessageResponse,\n LedgerSignTransactionParams,\n LedgerSignTransactionResponse,\n LedgerSignTypedDataParams,\n LedgerSignTypedDataResponse,\n} from './ledger-bridge';\nimport { MetaMaskLedgerHwAppEth } from './ledger-hw-app';\nimport { TransportMiddleware } from './ledger-transport-middleware';\nimport { LedgerMobileBridgeOptions } from './type';\nimport { getTransactionSelector } from './utils';\n\n/** Ledger APDU: CONDITIONS_OF_USE_NOT_SATISFIED (user rejected on device). */\nconst LEDGER_USER_REJECTION_STATUS = 0x6985;\n\n// MobileBridge Type will always use LedgerBridge with LedgerMobileBridgeOptions\nexport type MobileBridge = LedgerBridge & {\n openEthApp(): Promise;\n closeApps(): Promise;\n};\n\n/**\n * LedgerMobileBridge is a bridge between the LedgerKeyring and the LedgerTransportMiddleware.\n */\nexport class LedgerMobileBridge implements MobileBridge {\n readonly #transportMiddleware?: TransportMiddleware;\n\n #opts: LedgerMobileBridgeOptions;\n\n isDeviceConnected = false;\n\n constructor(\n transportMiddleware: TransportMiddleware,\n opts: LedgerMobileBridgeOptions = {},\n ) {\n this.#opts = opts;\n this.#transportMiddleware = transportMiddleware;\n }\n\n /**\n * Method to initializes the keyring.\n * Mobile ledger doesnt not require init.\n *\n * @returns A promise that will resolve once the bridge is initialized.\n */\n async init(): Promise {\n return Promise.resolve();\n }\n\n /**\n * Method to destroy the keyring.\n * It will dispose the transportmiddleware and set isDeviceConnected to false.\n */\n async destroy(): Promise {\n try {\n await this.#getTransportMiddleWare().dispose();\n } catch (error) {\n console.error(error);\n }\n this.isDeviceConnected = false;\n }\n\n /**\n * Method to sign a string Message.\n * Sending the string message to the device and returning the signed message.\n *\n * @param params - An object contains hdPath and message.\n * @param params.hdPath - The BIP 32 path of the account.\n * @param params.message - The message to sign.\n * @returns Retrieve v, r, s from the signed message.\n */\n async deviceSignMessage({\n hdPath,\n message,\n }: LedgerSignMessageParams): Promise {\n return this.#getEthApp().signPersonalMessage(hdPath, message);\n }\n\n /**\n * Method to sign a EIP712 Message.\n * Sending the typed data message to the device and returning the signed message.\n *\n * @param params - An object contains hdPath, domainSeparatorHex and hashStructMessageHex.\n * @param params.hdPath - The BIP 32 path of the account.\n * @param params.message - The EIP712 message to sign.\n * @returns Retrieve v, r, s from the signed message.\n */\n async deviceSignTypedData({\n hdPath,\n message,\n }: LedgerSignTypedDataParams): Promise {\n return this.#getEthApp().signEIP712Message(hdPath, message);\n }\n\n async deviceSignDelegationAuthorization({\n hdPath: _hdPath,\n chainId: _chainId,\n contractAddress: _contractAddress,\n nonce: _nonce,\n }: LedgerSignDelegationAuthorizationParams): Promise {\n throw new Error(\n 'Ledger: signDelegationAuthorization is not supported via mobile bridge',\n );\n }\n\n /**\n * Method to sign a transaction\n * Sending the hexadecimal transaction message to the device and returning the signed transaction.\n *\n * Tries clear-signing first. If resolution fails (e.g. no Ledger plugin for the chain or contract),\n * falls back to blind signing via `signTransaction(..., null)` unless the user rejected on the device.\n *\n * @param params - An object contains tx, hdPath.\n * @param params.tx - The raw ethereum transaction in hexadecimal to sign.\n * @param params.hdPath - The BIP 32 path of the account.\n * @returns Retrieve v, r, s from the signed transaction.\n */\n async deviceSignTransaction({\n tx,\n hdPath,\n }: LedgerSignTransactionParams): Promise {\n const selector = getTransactionSelector(tx);\n const nft = Boolean(selector && NFT_ONLY_SELECTORS.has(selector));\n const erc20 = Boolean(selector && ERC20_WRITE_SELECTORS.has(selector));\n\n const ethApp = this.#getEthApp();\n\n try {\n return await ethApp.clearSignTransaction(hdPath, tx, {\n externalPlugins: true,\n erc20,\n nft,\n });\n } catch (error: unknown) {\n if (LedgerMobileBridge.#isLedgerUserRejection(error)) {\n throw error;\n }\n\n console.warn(\n 'Ledger clear-sign failed; falling back to blind signing.',\n error,\n );\n return ethApp.signTransaction(hdPath, tx, null);\n }\n }\n\n /**\n * Method to retrieve the ethereum address for a given BIP 32 path.\n *\n * @param params - An object contains hdPath.\n * @param params.hdPath - The BIP 32 path of the account.\n * @returns An object contains publicKey, address and chainCode.\n */\n async getPublicKey({\n hdPath,\n }: GetPublicKeyParams): Promise {\n return await this.#getEthApp().getAddress(hdPath, false, true);\n }\n\n /**\n * Method to retrieve the current configuration.\n *\n * @returns Retrieve current configuration.\n */\n async getOptions(): Promise {\n return this.#opts;\n }\n\n /**\n * Method to set the current configuration.\n *\n * @param opts - An configuration object.\n */\n async setOptions(opts: LedgerMobileBridgeOptions): Promise {\n this.#opts = opts;\n }\n\n /**\n * Method to set the transport object to communicate with the device.\n *\n * @param transport - The communication interface with the Ledger hardware wallet. There are different kind of transports based on the technology (channels like U2F, HID, Bluetooth, Webusb).\n * @returns Retrieve boolean.\n */\n async updateTransportMethod(transport: Transport): Promise {\n if (!transport.deviceModel) {\n throw new Error('Property `deviceModel` is not defined in `transport`.');\n }\n if (!transport.deviceModel.id) {\n throw new Error(\n 'Property `deviceModel.id` is not defined in `transport`.',\n );\n }\n this.#getTransportMiddleWare().setTransport(transport);\n this.isDeviceConnected = true;\n return Promise.resolve(true);\n }\n\n /**\n * Method to init eth app object on ledger device.\n * This method is not supported on mobile.\n */\n async attemptMakeApp(): Promise {\n throw new Error('Method not supported.');\n }\n\n /**\n * Method to open ethereum application on ledger device.\n *\n */\n async openEthApp(): Promise {\n await this.#getEthApp().openEthApp();\n }\n\n /**\n * Method to close all running application on ledger device.\n *\n */\n async closeApps(): Promise {\n await this.#getEthApp().closeApps();\n }\n\n /**\n * Method to retrieve the name and version of the running application in ledger device.\n *\n * @returns An object contains appName and version.\n */\n async getAppNameAndVersion(): Promise {\n return this.#getEthApp().getAppNameAndVersion();\n }\n\n /**\n * Method to retrieve the current configuration of the Ethereum application on the Ledger device.\n *\n * @returns An object containing the application configuration including blind signing support, ERC20 provisioning status, Stark support, and version.\n */\n async getAppConfiguration(): Promise {\n return this.#getEthApp().getAppConfiguration();\n }\n\n /**\n * Method to retrieve the transport middleWare object.\n *\n * @returns The TransportMiddleware object.\n */\n #getTransportMiddleWare(): TransportMiddleware {\n if (this.#transportMiddleware) {\n return this.#transportMiddleware;\n }\n throw new Error('Instance `transportMiddleware` is not initialized.');\n }\n\n /**\n * Method to retrieve the ledger Eth App object.\n *\n * @returns The ledger Eth App object.\n */\n #getEthApp(): MetaMaskLedgerHwAppEth {\n return this.#getTransportMiddleWare().getEthApp();\n }\n\n /**\n * Detects an explicit on-device rejection so we do not fall back to blind signing\n * and re-prompt the user.\n *\n * @param error - Error from Ledger transport or hw-app-eth.\n * @returns True when the user rejected the action on the device.\n */\n static #isLedgerUserRejection(error: unknown): boolean {\n return (\n error instanceof TransportStatusError &&\n error.statusCode === LEDGER_USER_REJECTION_STATUS\n );\n }\n}\n"]}