lnd.xprv/shell.go
Tadge Dryja d8e62f6898 back to one adr[] slice
all adrs can be converted on the fly and displayed both ways.
in the actual UI this shouldn't happen though.

Also utxos are sorted and signed properly.  utxo selection
is still pretty low tech.
2016-02-19 01:24:23 -08:00

305 lines
6.5 KiB
Go

package main
import (
"bufio"
"fmt"
"log"
"os"
"strconv"
"strings"
"github.com/btcsuite/btcd/chaincfg"
"github.com/btcsuite/btcutil"
"github.com/lightningnetwork/lnd/uspv"
)
/* this is a CLI shell for testing out LND. Right now it's only for uspv
testing. It can send and receive coins.
*/
const (
keyFileName = "testkey.hex"
headerFileName = "headers.bin"
dbFileName = "utxo.db"
// this is my local testnet node, replace it with your own close by.
// Random internet testnet nodes usually work but sometimes don't, so
// maybe I should test against different versions out there.
SPVHostAdr = "127.0.0.1:28333"
)
var (
Params = &chaincfg.SegNetParams
SCon uspv.SPVCon // global here for now
)
func shell() {
fmt.Printf("LND spv shell v0.0\n")
fmt.Printf("Not yet well integrated, but soon.\n")
// read key file (generate if not found)
rootPriv, err := uspv.ReadKeyFileToECPriv(keyFileName, Params)
if err != nil {
log.Fatal(err)
}
// setup TxStore first (before spvcon)
Store := uspv.NewTxStore(rootPriv, Params)
// setup spvCon
SCon, err = uspv.OpenSPV(
SPVHostAdr, headerFileName, dbFileName, &Store, true, false, Params)
if err != nil {
log.Fatal(err)
}
tip, err := SCon.TS.GetDBSyncHeight() // ask for sync height
if err != nil {
log.Fatal(err)
}
if tip == 0 { // DB has never been used, set to birthday
tip = 20000 // hardcoded; later base on keyfile date?
err = SCon.TS.SetDBSyncHeight(tip)
if err != nil {
log.Fatal(err)
}
}
// once we're connected, initiate headers sync
err = SCon.AskForHeaders()
if err != nil {
log.Fatal(err)
}
// main shell loop
for {
// setup reader with max 4K input chars
reader := bufio.NewReaderSize(os.Stdin, 4000)
fmt.Printf("LND# ") // prompt
msg, err := reader.ReadString('\n') // input finishes on enter key
if err != nil {
log.Fatal(err)
}
cmdslice := strings.Fields(msg) // chop input up on whitespace
if len(cmdslice) < 1 {
continue // no input, just prompt again
}
fmt.Printf("entered command: %s\n", msg) // immediate feedback
err = Shellparse(cmdslice)
if err != nil { // only error should be user exit
log.Fatal(err)
}
}
return
}
// Shellparse parses user input and hands it to command functions if matching
func Shellparse(cmdslice []string) error {
var err error
var args []string
cmd := cmdslice[0]
if len(cmdslice) > 1 {
args = cmdslice[1:]
}
if cmd == "exit" || cmd == "quit" {
return fmt.Errorf("User exit")
}
// help gives you really terse help. Just a list of commands.
if cmd == "help" {
err = Help(args)
if err != nil {
fmt.Printf("help error: %s\n", err)
}
return nil
}
// adr generates a new address and displays it
if cmd == "adr" {
err = Adr(args)
if err != nil {
fmt.Printf("adr error: %s\n", err)
}
return nil
}
// bal shows the current set of utxos, addresses and score
if cmd == "bal" {
err = Bal(args)
if err != nil {
fmt.Printf("bal error: %s\n", err)
}
return nil
}
// send sends coins to the address specified
if cmd == "send" {
err = Send(args)
if err != nil {
fmt.Printf("send error: %s\n", err)
}
return nil
}
if cmd == "txs" {
err = Txs(args)
if err != nil {
fmt.Printf("txs error: %s\n", err)
}
return nil
}
if cmd == "blk" {
err = Blk(args)
if err != nil {
fmt.Printf("blk error: %s\n", err)
}
return nil
}
fmt.Printf("Command not recognized. type help for command list.\n")
return nil
}
func Txs(args []string) error {
alltx, err := SCon.TS.GetAllTxs()
if err != nil {
return err
}
for i, tx := range alltx {
fmt.Printf("tx %d %s\n", i, uspv.TxToString(tx))
}
return nil
}
func Blk(args []string) error {
if SCon.RBytes == 0 {
return fmt.Errorf("Can't check block, spv connection broken")
}
if len(args) == 0 {
return fmt.Errorf("must specify height")
}
height, err := strconv.ParseInt(args[0], 10, 32)
if err != nil {
return err
}
// request most recent block just to test
err = SCon.AskForOneBlock(int32(height))
if err != nil {
return err
}
return nil
}
// Bal prints out your score.
func Bal(args []string) error {
if SCon.TS == nil {
return fmt.Errorf("Can't get balance, spv connection broken")
}
fmt.Printf(" ----- Account Balance ----- \n")
allUtxos, err := SCon.TS.GetAllUtxos()
if err != nil {
return err
}
var score int64
for i, u := range allUtxos {
fmt.Printf("\tutxo %d height %d %s key:%d amt %d",
i, u.AtHeight, u.Op.String(), u.KeyIdx, u.Value)
if u.IsWit {
fmt.Printf(" WIT")
}
fmt.Printf("\n")
score += u.Value
}
height, _ := SCon.TS.GetDBSyncHeight()
for i, a := range SCon.TS.Adrs {
wa, err := btcutil.NewAddressWitnessPubKeyHash(
a.PkhAdr.ScriptAddress(), Params)
if err != nil {
return err
}
fmt.Printf("address %d %s OR %s\n", i, a.PkhAdr.String(), wa.String())
}
fmt.Printf("Total known utxos: %d\n", len(allUtxos))
fmt.Printf("Total spendable coin: %d\n", score)
fmt.Printf("DB sync height: %d\n", height)
return nil
}
// Adr makes a new address.
func Adr(args []string) error {
// if there's an arg, make 10 adrs
if len(args) > 0 {
for i := 0; i < 10; i++ {
_, err := SCon.TS.NewAdr()
if err != nil {
return err
}
}
}
// always make one
a, err := SCon.TS.NewAdr()
if err != nil {
return err
}
fmt.Printf("made new address %s\n",
a.String())
return nil
}
// Send sends coins.
func Send(args []string) error {
if SCon.RBytes == 0 {
return fmt.Errorf("Can't send, spv connection broken")
}
// get all utxos from the database
allUtxos, err := SCon.TS.GetAllUtxos()
if err != nil {
return err
}
var score int64 // score is the sum of all utxo amounts. highest score wins.
// add all the utxos up to get the score
for _, u := range allUtxos {
score += u.Value
}
// score is 0, cannot unlock 'send coins' acheivement
if score == 0 {
return fmt.Errorf("You don't have money. Work hard.")
}
// need args, fail
if len(args) < 2 {
return fmt.Errorf("need args: ssend amount(satoshis) address wit?")
}
amt, err := strconv.ParseInt(args[0], 10, 64)
if err != nil {
return err
}
if amt < 1000 {
return fmt.Errorf("can't send %d, too small", amt)
}
adr, err := btcutil.DecodeAddress(args[1], SCon.TS.Param)
if err != nil {
fmt.Printf("error parsing %s as address\t", args[1])
return err
}
fmt.Printf("send %d to address: %s \n",
amt, adr.String())
err = SCon.SendCoins(adr, amt)
if err != nil {
return err
}
return nil
}
func Help(args []string) error {
fmt.Printf("commands:\n")
fmt.Printf("help adr bal send exit\n")
return nil
}