9253fc337e
This fix applies mostly to unsupported terminals that do not trigger the special interrupt handling in liner. Supported terminals were covered because liner.Prompt returns an error if Ctrl-C is pressed.
286 lines
6.8 KiB
Go
286 lines
6.8 KiB
Go
// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
|
|
//
|
|
// This library 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 2.1 of the License, or (at your option) any later version.
|
|
//
|
|
// This library 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 this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
// MA 02110-1301 USA
|
|
|
|
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"math/big"
|
|
"os"
|
|
"os/signal"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/ethereum/go-ethereum/cmd/utils"
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/docserver"
|
|
"github.com/ethereum/go-ethereum/common/natspec"
|
|
"github.com/ethereum/go-ethereum/eth"
|
|
re "github.com/ethereum/go-ethereum/jsre"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/ethereum/go-ethereum/xeth"
|
|
"github.com/peterh/liner"
|
|
"github.com/robertkrimen/otto"
|
|
)
|
|
|
|
type prompter interface {
|
|
AppendHistory(string)
|
|
Prompt(p string) (string, error)
|
|
PasswordPrompt(p string) (string, error)
|
|
}
|
|
|
|
type dumbterm struct{ r *bufio.Reader }
|
|
|
|
func (r dumbterm) Prompt(p string) (string, error) {
|
|
fmt.Print(p)
|
|
line, err := r.r.ReadString('\n')
|
|
return strings.TrimSuffix(line, "\n"), err
|
|
}
|
|
|
|
func (r dumbterm) PasswordPrompt(p string) (string, error) {
|
|
fmt.Println("!! Unsupported terminal, password will echo.")
|
|
fmt.Print(p)
|
|
input, err := bufio.NewReader(os.Stdin).ReadString('\n')
|
|
fmt.Println()
|
|
return input, err
|
|
}
|
|
|
|
func (r dumbterm) AppendHistory(string) {}
|
|
|
|
type jsre struct {
|
|
re *re.JSRE
|
|
ethereum *eth.Ethereum
|
|
xeth *xeth.XEth
|
|
wait chan *big.Int
|
|
ps1 string
|
|
atexit func()
|
|
corsDomain string
|
|
prompter
|
|
}
|
|
|
|
func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, interactive bool, f xeth.Frontend) *jsre {
|
|
js := &jsre{ethereum: ethereum, ps1: "> "}
|
|
// set default cors domain used by startRpc from CLI flag
|
|
js.corsDomain = corsDomain
|
|
if f == nil {
|
|
f = js
|
|
}
|
|
js.xeth = xeth.New(ethereum, f)
|
|
js.wait = js.xeth.UpdateState()
|
|
// update state in separare forever blocks
|
|
js.re = re.New(libPath)
|
|
js.apiBindings(f)
|
|
js.adminBindings()
|
|
|
|
if !liner.TerminalSupported() || !interactive {
|
|
js.prompter = dumbterm{bufio.NewReader(os.Stdin)}
|
|
} else {
|
|
lr := liner.NewLiner()
|
|
js.withHistory(func(hist *os.File) { lr.ReadHistory(hist) })
|
|
lr.SetCtrlCAborts(true)
|
|
js.prompter = lr
|
|
js.atexit = func() {
|
|
js.withHistory(func(hist *os.File) { hist.Truncate(0); lr.WriteHistory(hist) })
|
|
lr.Close()
|
|
close(js.wait)
|
|
}
|
|
}
|
|
return js
|
|
}
|
|
|
|
func (js *jsre) apiBindings(f xeth.Frontend) {
|
|
xe := xeth.New(js.ethereum, f)
|
|
ethApi := rpc.NewEthereumApi(xe)
|
|
jeth := rpc.NewJeth(ethApi, js.re)
|
|
|
|
js.re.Set("jeth", struct{}{})
|
|
t, _ := js.re.Get("jeth")
|
|
jethObj := t.Object()
|
|
jethObj.Set("send", jeth.Send)
|
|
jethObj.Set("sendAsync", jeth.Send)
|
|
|
|
err := js.re.Compile("bignumber.js", re.BigNumber_JS)
|
|
if err != nil {
|
|
utils.Fatalf("Error loading bignumber.js: %v", err)
|
|
}
|
|
|
|
err = js.re.Compile("ethereum.js", re.Ethereum_JS)
|
|
if err != nil {
|
|
utils.Fatalf("Error loading ethereum.js: %v", err)
|
|
}
|
|
|
|
_, err = js.re.Eval("var web3 = require('web3');")
|
|
if err != nil {
|
|
utils.Fatalf("Error requiring web3: %v", err)
|
|
}
|
|
|
|
_, err = js.re.Eval("web3.setProvider(jeth)")
|
|
if err != nil {
|
|
utils.Fatalf("Error setting web3 provider: %v", err)
|
|
}
|
|
_, err = js.re.Eval(`
|
|
var eth = web3.eth;
|
|
var shh = web3.shh;
|
|
var db = web3.db;
|
|
var net = web3.net;
|
|
`)
|
|
if err != nil {
|
|
utils.Fatalf("Error setting namespaces: %v", err)
|
|
}
|
|
|
|
js.re.Eval(globalRegistrar + "registrar = GlobalRegistrar.at(\"" + globalRegistrarAddr + "\");")
|
|
}
|
|
|
|
var ds, _ = docserver.New("/")
|
|
|
|
func (self *jsre) ConfirmTransaction(tx string) bool {
|
|
if self.ethereum.NatSpec {
|
|
notice := natspec.GetNotice(self.xeth, tx, ds)
|
|
fmt.Println(notice)
|
|
answer, _ := self.Prompt("Confirm Transaction [y/n]")
|
|
return strings.HasPrefix(strings.Trim(answer, " "), "y")
|
|
} else {
|
|
return true
|
|
}
|
|
}
|
|
|
|
func (self *jsre) UnlockAccount(addr []byte) bool {
|
|
fmt.Printf("Please unlock account %x.\n", addr)
|
|
pass, err := self.PasswordPrompt("Passphrase: ")
|
|
if err != nil {
|
|
return false
|
|
}
|
|
// TODO: allow retry
|
|
if err := self.ethereum.AccountManager().Unlock(common.BytesToAddress(addr), pass); err != nil {
|
|
return false
|
|
} else {
|
|
fmt.Println("Account is now unlocked for this session.")
|
|
return true
|
|
}
|
|
}
|
|
|
|
func (self *jsre) exec(filename string) error {
|
|
if err := self.re.Exec(filename); err != nil {
|
|
self.re.Stop(false)
|
|
return fmt.Errorf("Javascript Error: %v", err)
|
|
}
|
|
self.re.Stop(true)
|
|
return nil
|
|
}
|
|
|
|
func (self *jsre) interactive() {
|
|
// Read input lines.
|
|
prompt := make(chan string)
|
|
inputln := make(chan string)
|
|
go func() {
|
|
defer close(inputln)
|
|
for {
|
|
line, err := self.Prompt(<-prompt)
|
|
if err != nil {
|
|
return
|
|
}
|
|
inputln <- line
|
|
}
|
|
}()
|
|
// Wait for Ctrl-C, too.
|
|
sig := make(chan os.Signal, 1)
|
|
signal.Notify(sig, os.Interrupt)
|
|
|
|
defer func() {
|
|
if self.atexit != nil {
|
|
self.atexit()
|
|
}
|
|
self.re.Stop(false)
|
|
}()
|
|
for {
|
|
prompt <- self.ps1
|
|
select {
|
|
case <-sig:
|
|
fmt.Println("caught interrupt, exiting")
|
|
return
|
|
case input, ok := <-inputln:
|
|
if !ok || indentCount <= 0 && input == "exit" {
|
|
return
|
|
}
|
|
if input == "" {
|
|
continue
|
|
}
|
|
str += input + "\n"
|
|
self.setIndent()
|
|
if indentCount <= 0 {
|
|
hist := str[:len(str)-1]
|
|
self.AppendHistory(hist)
|
|
self.parseInput(str)
|
|
str = ""
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (self *jsre) withHistory(op func(*os.File)) {
|
|
hist, err := os.OpenFile(filepath.Join(self.ethereum.DataDir, "history"), os.O_RDWR|os.O_CREATE, os.ModePerm)
|
|
if err != nil {
|
|
fmt.Printf("unable to open history file: %v\n", err)
|
|
return
|
|
}
|
|
op(hist)
|
|
hist.Close()
|
|
}
|
|
|
|
func (self *jsre) parseInput(code string) {
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
fmt.Println("[native] error", r)
|
|
}
|
|
}()
|
|
value, err := self.re.Run(code)
|
|
if err != nil {
|
|
if ottoErr, ok := err.(*otto.Error); ok {
|
|
fmt.Println(ottoErr.String())
|
|
} else {
|
|
fmt.Println(err)
|
|
}
|
|
return
|
|
}
|
|
self.printValue(value)
|
|
}
|
|
|
|
var indentCount = 0
|
|
var str = ""
|
|
|
|
func (self *jsre) setIndent() {
|
|
open := strings.Count(str, "{")
|
|
open += strings.Count(str, "(")
|
|
closed := strings.Count(str, "}")
|
|
closed += strings.Count(str, ")")
|
|
indentCount = open - closed
|
|
if indentCount <= 0 {
|
|
self.ps1 = "> "
|
|
} else {
|
|
self.ps1 = strings.Join(make([]string, indentCount*2), "..")
|
|
self.ps1 += " "
|
|
}
|
|
}
|
|
|
|
func (self *jsre) printValue(v interface{}) {
|
|
val, err := self.re.PrettyPrint(v)
|
|
if err == nil {
|
|
fmt.Printf("%v", val)
|
|
}
|
|
}
|