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// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
//
package core
import (
"context"
"sync"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rpc"
)
type StdIOUI struct {
client rpc.Client
mu sync.Mutex
}
func NewStdIOUI() *StdIOUI {
client, err := rpc.DialContext(context.Background(), "stdio://")
if err != nil {
log.Crit("Could not create stdio client", "err", err)
}
ui := &StdIOUI{client: *client}
return ui
}
func (ui *StdIOUI) RegisterUIServer(api *UIServerAPI) {
ui.client.RegisterName("clef", api)
}
// dispatch sends a request over the stdio
func (ui *StdIOUI) dispatch(serviceMethod string, args interface{}, reply interface{}) error {
err := ui.client.Call(&reply, serviceMethod, args)
if err != nil {
log.Info("Error", "exc", err.Error())
}
return err
}
// notify sends a request over the stdio, and does not listen for a response
func (ui *StdIOUI) notify(serviceMethod string, args interface{}) error {
ctx := context.Background()
err := ui.client.Notify(ctx, serviceMethod, args)
if err != nil {
log.Info("Error", "exc", err.Error())
}
return err
}
func (ui *StdIOUI) ApproveTx(request *SignTxRequest) (SignTxResponse, error) {
var result SignTxResponse
err := ui.dispatch("ui_approveTx", request, &result)
return result, err
}
func (ui *StdIOUI) ApproveSignData(request *SignDataRequest) (SignDataResponse, error) {
var result SignDataResponse
err := ui.dispatch("ui_approveSignData", request, &result)
return result, err
}
func (ui *StdIOUI) ApproveListing(request *ListRequest) (ListResponse, error) {
var result ListResponse
err := ui.dispatch("ui_approveListing", request, &result)
return result, err
}
func (ui *StdIOUI) ApproveNewAccount(request *NewAccountRequest) (NewAccountResponse, error) {
var result NewAccountResponse
err := ui.dispatch("ui_approveNewAccount", request, &result)
return result, err
}
func (ui *StdIOUI) ShowError(message string) {
err := ui.notify("ui_showError", &Message{message})
if err != nil {
log.Info("Error calling 'ui_showError'", "exc", err.Error(), "msg", message)
}
}
func (ui *StdIOUI) ShowInfo(message string) {
err := ui.notify("ui_showInfo", Message{message})
if err != nil {
log.Info("Error calling 'ui_showInfo'", "exc", err.Error(), "msg", message)
}
}
func (ui *StdIOUI) OnApprovedTx(tx ethapi.SignTransactionResult) {
err := ui.notify("ui_onApprovedTx", tx)
if err != nil {
log.Info("Error calling 'ui_onApprovedTx'", "exc", err.Error(), "tx", tx)
}
}
func (ui *StdIOUI) OnSignerStartup(info StartupInfo) {
err := ui.notify("ui_onSignerStartup", info)
if err != nil {
log.Info("Error calling 'ui_onSignerStartup'", "exc", err.Error(), "info", info)
}
}
func (ui *StdIOUI) OnInputRequired(info UserInputRequest) (UserInputResponse, error) {
var result UserInputResponse
err := ui.dispatch("ui_onInputRequired", info, &result)
if err != nil {
log.Info("Error calling 'ui_onInputRequired'", "exc", err.Error(), "info", info)
}
return result, err
}
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