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package main
import (
"bufio"
"bytes"
"encoding/hex"
"errors"
"fmt"
"github.com/ethereum/eth-go"
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethdb"
"github.com/ethereum/eth-go/ethutil"
"github.com/ethereum/eth-go/ethwire"
_ "math/big"
"os"
"strings"
)
type Console struct {
db *ethdb.MemDatabase
trie *ethutil.Trie
ethereum *eth.Ethereum
}
func NewConsole(s *eth.Ethereum) *Console {
db, _ := ethdb.NewMemDatabase()
trie := ethutil.NewTrie(db, "")
return &Console{db: db, trie: trie, ethereum: s}
}
func (i *Console) ValidateInput(action string, argumentLength int) error {
err := false
var expArgCount int
switch {
case action == "update" && argumentLength != 2:
err = true
expArgCount = 2
case action == "get" && argumentLength != 1:
err = true
expArgCount = 1
case action == "dag" && argumentLength != 2:
err = true
expArgCount = 2
case action == "decode" && argumentLength != 1:
err = true
expArgCount = 1
case action == "encode" && argumentLength != 1:
err = true
expArgCount = 1
case action == "gettx" && argumentLength != 1:
err = true
expArgCount = 1
case action == "tx" && argumentLength != 2:
err = true
expArgCount = 2
case action == "getaddr" && argumentLength != 1:
err = true
expArgCount = 1
case action == "contract" && argumentLength != 1:
err = true
expArgCount = 1
case action == "say" && argumentLength != 1:
err = true
expArgCount = 1
case action == "addp" && argumentLength != 1:
err = true
expArgCount = 1
case action == "block" && argumentLength != 1:
err = true
expArgCount = 1
}
if err {
return errors.New(fmt.Sprintf("'%s' requires %d args, got %d", action, expArgCount, argumentLength))
} else {
return nil
}
}
func (i *Console) Editor() []string {
var buff bytes.Buffer
for {
reader := bufio.NewReader(os.Stdin)
str, _, err := reader.ReadLine()
if len(str) > 0 {
buff.Write(str)
buff.WriteString("\n")
}
if err != nil && err.Error() == "EOF" {
break
}
}
scanner := bufio.NewScanner(strings.NewReader(buff.String()))
scanner.Split(bufio.ScanLines)
var lines []string
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
return lines
}
func (i *Console) PrintRoot() {
root := ethutil.NewValue(i.trie.Root)
if len(root.Bytes()) != 0 {
fmt.Println(hex.EncodeToString(root.Bytes()))
} else {
fmt.Println(i.trie.Root)
}
}
func (i *Console) ParseInput(input string) bool {
scanner := bufio.NewScanner(strings.NewReader(input))
scanner.Split(bufio.ScanWords)
count := 0
var tokens []string
for scanner.Scan() {
count++
tokens = append(tokens, scanner.Text())
}
if err := scanner.Err(); err != nil {
fmt.Fprintln(os.Stderr, "reading input:", err)
}
if len(tokens) == 0 {
return true
}
err := i.ValidateInput(tokens[0], count-1)
if err != nil {
fmt.Println(err)
} else {
switch tokens[0] {
case "update":
i.trie.Update(tokens[1], tokens[2])
i.PrintRoot()
case "get":
fmt.Println(i.trie.Get(tokens[1]))
case "root":
i.PrintRoot()
case "rawroot":
fmt.Println(i.trie.Root)
case "print":
i.db.Print()
case "dag":
fmt.Println(ethchain.DaggerVerify(ethutil.Big(tokens[1]), // hash
ethutil.BigPow(2, 36), // diff
ethutil.Big(tokens[2]))) // nonce
case "decode":
value := ethutil.NewValueFromBytes([]byte(tokens[1]))
fmt.Println(value)
case "getaddr":
encoded, _ := hex.DecodeString(tokens[1])
addr := i.ethereum.BlockChain().CurrentBlock.State().GetAccount(encoded)
fmt.Println("addr:", addr)
case "block":
encoded, _ := hex.DecodeString(tokens[1])
block := i.ethereum.BlockChain().GetBlock(encoded)
info := block.BlockInfo()
fmt.Printf("++++++++++ #%d ++++++++++\n%v\n", info.Number, block)
case "say":
i.ethereum.Broadcast(ethwire.MsgTalkTy, []interface{}{tokens[1]})
case "addp":
i.ethereum.ConnectToPeer(tokens[1])
case "pcount":
fmt.Println("peers:", i.ethereum.Peers().Len())
case "encode":
fmt.Printf("%q\n", ethutil.Encode(tokens[1]))
case "tx":
recipient, err := hex.DecodeString(tokens[1])
if err != nil {
fmt.Println("recipient err:", err)
} else {
tx := ethchain.NewTransaction(recipient, ethutil.Big(tokens[2]), []string{""})
key := ethutil.Config.Db.GetKeys()[0]
tx.Sign(key.PrivateKey)
i.ethereum.TxPool().QueueTransaction(tx)
fmt.Printf("%x\n", tx.Hash())
}
case "gettx":
addr, _ := hex.DecodeString(tokens[1])
data, _ := ethutil.Config.Db.Get(addr)
if len(data) != 0 {
decoder := ethutil.NewValueFromBytes(data)
fmt.Println(decoder)
} else {
fmt.Println("gettx: tx not found")
}
case "contract":
fmt.Println("Contract editor (Ctrl-D = done)")
code := ethchain.Compile(i.Editor())
contract := ethchain.NewTransaction(ethchain.ContractAddr, ethutil.Big(tokens[1]), code)
key := ethutil.Config.Db.GetKeys()[0]
contract.Sign(key.PrivateKey)
i.ethereum.TxPool().QueueTransaction(contract)
fmt.Printf("%x\n", contract.Hash()[12:])
case "exit", "quit", "q":
return false
case "help":
fmt.Printf("COMMANDS:\n" +
"\033[1m= DB =\033[0m\n" +
"update KEY VALUE - Updates/Creates a new value for the given key\n" +
"get KEY - Retrieves the given key\n" +
"root - Prints the hex encoded merkle root\n" +
"rawroot - Prints the raw merkle root\n" +
"block HASH - Prints the block\n" +
"getaddr ADDR - Prints the account associated with the address\n" +
"\033[1m= Dagger =\033[0m\n" +
"dag HASH NONCE - Verifies a nonce with the given hash with dagger\n" +
"\033[1m= Encoding =\033[0m\n" +
"decode STR\n" +
"encode STR\n" +
"\033[1m= Other =\033[0m\n" +
"addp HOST:PORT\n" +
"tx TO AMOUNT\n" +
"contract AMOUNT\n")
default:
fmt.Println("Unknown command:", tokens[0])
}
}
return true
}
func (i *Console) Start() {
fmt.Printf("Eth Console. Type (help) for help\n")
reader := bufio.NewReader(os.Stdin)
for {
fmt.Printf("eth >>> ")
str, _, err := reader.ReadLine()
if err != nil {
fmt.Println("Error reading input", err)
} else {
if !i.ParseInput(string(str)) {
return
}
}
}
}
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