func xmp_txs2s(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
r.ParseForm()
if checksid(r) && len(r.Form["del"]) > 0 {
tid := btc.NewUint256FromString(r.Form["del"][0])
if tid != nil {
network.TxMutex.Lock()
delete(network.TransactionsToSend, tid.Hash)
network.TxMutex.Unlock()
}
}
if checksid(r) && len(r.Form["send"]) > 0 {
tid := btc.NewUint256FromString(r.Form["send"][0])
if tid != nil {
network.TxMutex.Lock()
if ptx, ok := network.TransactionsToSend[tid.Hash]; ok {
network.TxMutex.Unlock()
cnt := network.NetRouteInv(1, tid, nil)
ptx.Invsentcnt += cnt
}
}
}
w.Header()["Content-Type"] = []string{"text/xml"}
if len(r.Form["id"]) > 0 {
output_tx_xml(w, r.Form["id"][0])
return
}
w.Write([]byte("<txpool>"))
network.TxMutex.Lock()
for k, v := range network.TransactionsToSend {
w.Write([]byte("<tx>"))
fmt.Fprint(w, "<id>", btc.NewUint256(k[:]).String(), "</id>")
fmt.Fprint(w, "<time>", v.Firstseen.Unix(), "</time>")
fmt.Fprint(w, "<len>", len(v.Data), "</len>")
fmt.Fprint(w, "<own>", v.Own, "</own>")
fmt.Fprint(w, "<firstseen>", v.Firstseen.Unix(), "</firstseen>")
fmt.Fprint(w, "<invsentcnt>", v.Invsentcnt, "</invsentcnt>")
fmt.Fprint(w, "<sentcnt>", v.SentCnt, "</sentcnt>")
fmt.Fprint(w, "<sentlast>", v.Lastsent.Unix(), "</sentlast>")
fmt.Fprint(w, "<volume>", v.Volume, "</volume>")
fmt.Fprint(w, "<fee>", v.Fee, "</fee>")
fmt.Fprint(w, "<blocked>", v.Blocked, "</blocked>")
w.Write([]byte("</tx>"))
}
network.TxMutex.Unlock()
w.Write([]byte("</txpool>"))
}
func raw_tx(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
defer func() {
if r := recover(); r != nil {
fmt.Fprintln(w, "Error")
if err, ok := r.(error); ok {
fmt.Fprintln(w, err.Error())
}
}
}()
r.ParseForm()
if len(r.Form["id"]) == 0 {
fmt.Println("No id given")
return
}
txid := btc.NewUint256FromString(r.Form["id"][0])
fmt.Fprintln(w, "TxID:", txid.String())
if tx, ok := network.TransactionsToSend[txid.Hash]; ok {
s, _, _, _, _ := usif.DecodeTx(tx.Tx)
w.Write([]byte(s))
} else {
fmt.Fprintln(w, "Not found")
}
}
func host_init() {
BtcRootDir := BitcoinHome()
if *datadir == "" {
GocoinHomeDir = BtcRootDir + "gocoin/"
} else {
GocoinHomeDir = *datadir + "/"
}
if *testnet { // testnet3
DefaultTcpPort = 18333
GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
GocoinHomeDir += "tstnet/"
AddrVersion = 0x6f
BtcRootDir += "testnet3/"
} else {
DefaultTcpPort = 8333
GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
GocoinHomeDir += "btcnet/"
AddrVersion = 0x00
}
fi, e := os.Stat(GocoinHomeDir + "blockchain.idx")
if e != nil || fi.Size() < 100 {
os.RemoveAll(GocoinHomeDir)
fmt.Println("You seem to be running Gocoin for the fist time on this PC")
fi, e = os.Stat(BtcRootDir + "blocks/blk00000.dat")
if e == nil && fi.Size() > 1024*1024 {
fmt.Println("There is a database from Satoshi client on your disk...")
if ask_yes_no("Go you want to import this database into Gocoin?") {
import_blockchain(BtcRootDir + "blocks")
}
}
}
fmt.Println("Opening blockchain...")
sta := time.Now().UnixNano()
BlockChain = btc.NewChain(GocoinHomeDir, GenesisBlock, *rescan)
sto := time.Now().UnixNano()
fmt.Printf("Blockchain open in %.3f seconds\n", float64(sto-sta)/1e9)
if *nosync {
BlockChain.DoNotSync = true
fmt.Println("Syncing is disabled. Switch it on with 'sync' command")
}
}
func output_tx_xml(w http.ResponseWriter, id string) {
txid := btc.NewUint256FromString(id)
w.Write([]byte("<tx>"))
fmt.Fprint(w, "<id>", id, "</id>")
if t2s, ok := network.TransactionsToSend[txid.BIdx()]; ok {
w.Write([]byte("<status>OK</status>"))
tx := t2s.Tx
w.Write([]byte("<inputs>"))
for i := range tx.TxIn {
w.Write([]byte("<input>"))
var po *btc.TxOut
inpid := btc.NewUint256(tx.TxIn[i].Input.Hash[:])
if txinmem, ok := network.TransactionsToSend[inpid.BIdx()]; ok {
if int(tx.TxIn[i].Input.Vout) < len(txinmem.TxOut) {
po = txinmem.TxOut[tx.TxIn[i].Input.Vout]
}
} else {
po, _ = common.BlockChain.Unspent.UnspentGet(&tx.TxIn[i].Input)
}
if po != nil {
ok := btc.VerifyTxScript(tx.TxIn[i].ScriptSig, po.Pk_script, i, tx, true)
if !ok {
w.Write([]byte("<status>Script FAILED</status>"))
} else {
w.Write([]byte("<status>OK</status>"))
}
fmt.Fprint(w, "<value>", po.Value, "</value>")
fmt.Fprint(w, "<addr>", btc.NewAddrFromPkScript(po.Pk_script, common.Testnet).String(), "</addr>")
fmt.Fprint(w, "<block>", po.BlockHeight, "</block>")
} else {
w.Write([]byte("<status>UNKNOWN INPUT</status>"))
}
w.Write([]byte("</input>"))
}
w.Write([]byte("</inputs>"))
w.Write([]byte("<outputs>"))
for i := range tx.TxOut {
w.Write([]byte("<output>"))
fmt.Fprint(w, "<value>", tx.TxOut[i].Value, "</value>")
adr := btc.NewAddrFromPkScript(tx.TxOut[i].Pk_script, common.Testnet)
if adr != nil {
fmt.Fprint(w, "<addr>", adr.String(), "</addr>")
} else {
fmt.Fprint(w, "<addr>", "scr:"+hex.EncodeToString(tx.TxOut[i].Pk_script), "</addr>")
}
w.Write([]byte("</output>"))
}
w.Write([]byte("</outputs>"))
} else {
w.Write([]byte("<status>Not found</status>"))
}
w.Write([]byte("</tx>"))
}
func dec_tx(par string) {
txid := btc.NewUint256FromString(par)
if txid == nil {
fmt.Println("You must specify a valid transaction ID for this command.")
list_txs("")
return
}
if tx, ok := network.TransactionsToSend[txid.Hash]; ok {
s, _, _, _, _ := usif.DecodeTx(tx.Tx)
fmt.Println(s)
} else {
fmt.Println("No such transaction ID in the memory pool.")
}
}
func send_tx(par string) {
txid := btc.NewUint256FromString(par)
if txid == nil {
fmt.Println("You must specify a valid transaction ID for this command.")
list_txs("")
return
}
if _, ok := TransactionsToSend[txid.Hash]; !ok {
fmt.Println("No such transaction ID in the memory pool.")
list_txs("")
return
}
cnt := NetSendInv(1, txid.Hash[:], nil)
fmt.Println("Transaction", txid.String(), "broadcasted to", cnt, "node(s)")
fmt.Println("If it does not appear in the chain, you may want to redo it.")
}
func main() {
fmt.Println("Gocoin FetchTx version", btc.SourcesTag)
if len(os.Args) < 2 {
fmt.Println("Specify transaction id on the command line (MSB).")
return
}
txid := btc.NewUint256FromString(os.Args[1])
rawtx := utils.GetTxFromWeb(txid)
if rawtx == nil {
fmt.Println("Error fetching the transaction")
} else {
ioutil.WriteFile(txid.String()+".tx", rawtx, 0666)
}
}
func GetTx(txid *btc.Uint256, vout int) bool {
r, er := http.Get("http://blockexplorer.com/rawtx/" + txid.String())
if er == nil && r.StatusCode == 200 {
defer r.Body.Close()
c, _ := ioutil.ReadAll(r.Body)
var txx onetx
er = json.Unmarshal(c[:], &txx)
if er == nil {
tx := new(btc.Tx)
tx.Version = txx.Ver
tx.TxIn = make([]*btc.TxIn, len(txx.In))
for i := range txx.In {
tx.TxIn[i] = new(btc.TxIn)
tx.TxIn[i].Input.Hash = btc.NewUint256FromString(txx.In[i].Prev_out.Hash).Hash
tx.TxIn[i].Input.Vout = txx.In[i].Prev_out.N
tx.TxIn[i].ScriptSig, _ = btc.DecodeScript(txx.In[i].ScriptSig)
tx.TxIn[i].Sequence = 0xffffffff
}
tx.TxOut = make([]*btc.TxOut, len(txx.Out))
for i := range txx.Out {
tx.TxOut[i] = new(btc.TxOut)
tx.TxOut[i].Value = btc.ParseValue(txx.Out[i].Value)
tx.TxOut[i].Pk_script, _ = btc.DecodeScript(txx.Out[i].ScriptPubKey)
}
tx.Lock_time = txx.Lock_time
rawtx := tx.Serialize()
curid := btc.NewSha2Hash(rawtx)
if !curid.Equal(txid) {
fmt.Println("The downloaded transaction does not match its ID.")
return false
}
ioutil.WriteFile("balance/"+curid.String()+".tx", rawtx, 0666)
return true
} else {
fmt.Println("json.Unmarshal:", er.Error())
}
} else {
if er != nil {
fmt.Println("http.Get:", er.Error())
} else {
fmt.Println("StatusCode=", r.StatusCode)
}
}
return false
}
func del_tx(par string) {
txid := btc.NewUint256FromString(par)
if txid == nil {
fmt.Println("You must specify a valid transaction ID for this command.")
list_txs("")
return
}
network.TxMutex.Lock()
if _, ok := network.TransactionsToSend[txid.Hash]; !ok {
network.TxMutex.Unlock()
fmt.Println("No such transaction ID in the memory pool.")
list_txs("")
return
}
delete(network.TransactionsToSend, txid.Hash)
network.TxMutex.Unlock()
fmt.Println("Transaction", txid.String(), "removed from the memory pool")
}
func send_tx(par string) {
txid := btc.NewUint256FromString(par)
if txid == nil {
fmt.Println("You must specify a valid transaction ID for this command.")
list_txs("")
return
}
network.TxMutex.Lock()
if ptx, ok := network.TransactionsToSend[txid.BIdx()]; ok {
network.TxMutex.Unlock()
cnt := network.NetRouteInv(1, txid, nil)
ptx.Invsentcnt += cnt
fmt.Println("INV for TxID", txid.String(), "sent to", cnt, "node(s)")
fmt.Println("If it does not appear in the chain, you may want to redo it.")
} else {
network.TxMutex.Unlock()
fmt.Println("No such transaction ID in the memory pool.")
list_txs("")
}
}
func send1_tx(par string) {
txid := btc.NewUint256FromString(par)
if txid == nil {
fmt.Println("You must specify a valid transaction ID for this command.")
list_txs("")
return
}
network.TxMutex.Lock()
if ptx, ok := network.TransactionsToSend[txid.Hash]; ok {
network.TxMutex.Unlock()
usif.SendInvToRandomPeer(1, txid)
ptx.Invsentcnt++
fmt.Println("INV for TxID", txid.String(), "sent to a random node")
fmt.Println("If it does not appear in the chain, you may want to redo it.")
} else {
network.TxMutex.Unlock()
fmt.Println("No such transaction ID in the memory pool.")
list_txs("")
}
}
func dump_block(s string) {
h := btc.NewUint256FromString(s)
if h == nil {
println("Specify block's hash")
return
}
bl, _, e := common.BlockChain.Blocks.BlockGet(h)
if e != nil {
println(e.Error())
return
}
fn := h.String() + ".bin"
f, e := os.Create(fn)
if e != nil {
println(e.Error())
return
}
f.Write(bl)
f.Close()
fmt.Println("Block saved to file:", fn)
}
func main() {
StartTime = time.Now()
GenesisBlock := btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
GocoinHomeDir = "btcnet" + string(os.PathSeparator)
BlockChain = btc.NewChain(GocoinHomeDir, GenesisBlock, false)
if btc.AbortNow || BlockChain == nil {
return
}
new_connection("129.132.230.71")
//new_connection("198.12.127.2")
//new_connection("85.17.239.32")
//new_connection("94.23.228.130")
//new_connection("129.132.230.75")
//new_connection("178.63.63.214")
get_headers()
return
}
// load the content of the "balance/" folder
func load_balance() {
var unknownInputs int
f, e := os.Open("balance/unspent.txt")
if e != nil {
println(e.Error())
os.Exit(1)
}
rd := bufio.NewReader(f)
for {
l, _, e := rd.ReadLine()
if len(l) == 0 && e != nil {
break
}
if l[64] == '-' {
txid := btc.NewUint256FromString(string(l[:64]))
rst := strings.SplitN(string(l[65:]), " ", 2)
vout, _ := strconv.ParseUint(rst[0], 10, 32)
uns := new(btc.TxPrevOut)
copy(uns.Hash[:], txid.Hash[:])
uns.Vout = uint32(vout)
lab := ""
if len(rst) > 1 {
lab = rst[1]
}
if _, ok := loadedTxs[txid.Hash]; !ok {
tf, _ := os.Open("balance/" + txid.String() + ".tx")
if tf != nil {
siz, _ := tf.Seek(0, os.SEEK_END)
tf.Seek(0, os.SEEK_SET)
buf := make([]byte, siz)
tf.Read(buf)
tf.Close()
th := btc.Sha2Sum(buf)
if bytes.Equal(th[:], txid.Hash[:]) {
tx, _ := btc.NewTx(buf)
if tx != nil {
loadedTxs[txid.Hash] = tx
} else {
println("transaction is corrupt:", txid.String())
}
} else {
println("transaction file is corrupt:", txid.String())
os.Exit(1)
}
} else {
println("transaction file not found:", txid.String())
os.Exit(1)
}
}
uo := UO(uns)
fnd := false
for j := range publ_addrs {
if publ_addrs[j].Owns(uo.Pk_script) {
unspentOuts = append(unspentOuts, uns)
unspentOutsLabel = append(unspentOutsLabel, lab)
totBtc += UO(uns).Value
fnd = true
break
}
}
if !fnd {
unknownInputs++
if *verbose {
fmt.Println(uns.String(), "does not belogn to your wallet - ignore it")
}
}
}
}
f.Close()
fmt.Printf("You have %.8f BTC in %d unspent outputs\n", float64(totBtc)/1e8, len(unspentOuts))
if unknownInputs > 0 {
fmt.Printf("WARNING: Some inputs (%d) cannot be spent (-v to print them)\n", unknownInputs)
}
}
func main() {
fmt.Println("Gocoin blockchain downloader version", btc.SourcesTag)
parse_command_line()
setup_runtime_vars()
if !add_ip_str(SeedNode) {
println("You need to specify IP address of a fast seed node.")
println("For example run it like this: downloader -s 89.31.102.237")
return
}
load_ips() // other seed nodes
if len(GocoinHomeDir) > 0 && GocoinHomeDir[len(GocoinHomeDir)-1] != os.PathSeparator {
GocoinHomeDir += string(os.PathSeparator)
}
if Testnet {
GocoinHomeDir += "tstnet" + string(os.PathSeparator)
Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
DefaultTcpPort = 18333
GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
fmt.Println("Using testnet3")
} else {
GocoinHomeDir += "btcnet" + string(os.PathSeparator)
}
fmt.Println("GocoinHomeDir:", GocoinHomeDir)
utils.LockDatabaseDir(GocoinHomeDir)
defer utils.UnlockDatabaseDir()
StartTime = time.Now()
if open_blockchain() {
fmt.Printf("Blockchain opening aborted\n")
close_blockchain()
return
}
fmt.Println("Blockchain open in", time.Now().Sub(StartTime))
go do_usif()
fmt.Println("Downloading headers from the seed peer", SeedNode)
download_headers()
if GlobalExit {
close_blockchain()
return
}
if DoThePings {
fmt.Println("Tuning to other peers and trying to find the fastest ones.")
fmt.Println("Execute command 'g' to continue to block chain download.")
fmt.Println("Otherwise it will auto-continue after 15 minutes.")
usif_prompt()
do_pings()
fmt.Println("Pings done.")
usif_prompt()
}
var HighestTrustedBlock *btc.Uint256
if LastTrustedBlock == "all" {
HighestTrustedBlock = TheBlockChain.BlockTreeEnd.BlockHash
fmt.Println("Assume all blocks trusted")
} else if LastTrustedBlock == "auto" {
if LastBlockHeight > 6 {
ha := BlocksToGet[LastBlockHeight]
HighestTrustedBlock = btc.NewUint256(ha[:])
fmt.Println("Assume last trusted block as", HighestTrustedBlock.String())
} else {
fmt.Println("-t=auto ignored since LastBlockHeight is only", LastBlockHeight)
}
} else if LastTrustedBlock != "" {
HighestTrustedBlock = btc.NewUint256FromString(LastTrustedBlock)
}
if HighestTrustedBlock != nil {
for k, h := range BlocksToGet {
if bytes.Equal(h[:], HighestTrustedBlock.Hash[:]) {
TrustUpTo = k
fmt.Println("All the blocks up to", TrustUpTo, "are assumed trusted")
break
}
}
} else {
fmt.Println("None of the blocks is to be assumed trusted (it will be very slow).")
}
for n := TheBlockChain.BlockTreeEnd; n != nil && n.Height > TheBlockChain.BlockTreeEnd.Height-BSLEN; n = n.Parent {
blocksize_update(int(n.BlockSize))
}
fmt.Println("Downloading blocks - BlocksToGet:", len(BlocksToGet), " avg_size:", avg_block_size())
usif_prompt()
StartTime = time.Now()
get_blocks()
fmt.Println("Up to block", TheBlockChain.BlockTreeEnd.Height, "in", time.Now().Sub(StartTime).String())
close_all_connections()
close_blockchain()
return
}
"os"
"os/signal"
"runtime"
"runtime/debug"
"time"
//"github.com/piotrnar/gocoin/qdb"
"github.com/piotrnar/gocoin/btc/qdb"
"github.com/piotrnar/gocoin/tools/utils"
)
var (
Magic [4]byte = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
StartTime time.Time
TheBlockChain *btc.Chain
GenesisBlock *btc.Uint256 = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
TrustUpTo uint32
GlobalExit bool
// CommandLineSwitches
LastTrustedBlock string // -trust
GocoinHomeDir string // -d
OnlyStoreBlocks bool // -b
MaxNetworkConns uint // -n
GCPerc int // -g
SeedNode string // -s
DoThePings bool // -p
MemForBlocks uint // -m (in megabytes)
Testnet bool // -t
)
func dl_payment(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
var err string
r.ParseForm()
if len(r.Form["outcnt"]) == 1 {
var thisbal btc.AllUnspentTx
var pay_cmd string
var totalinput, spentsofar uint64
var change_addr *btc.BtcAddr
tx := new(btc.Tx)
tx.Version = 1
tx.Lock_time = 0
outcnt, _ := strconv.ParseUint(r.Form["outcnt"][0], 10, 32)
wallet.LockBal()
for i := 1; i <= int(outcnt); i++ {
is := fmt.Sprint(i)
if len(r.Form["txout"+is]) == 1 && r.Form["txout"+is][0] == "on" {
hash := btc.NewUint256FromString(r.Form["txid"+is][0])
if hash != nil {
vout, er := strconv.ParseUint(r.Form["txvout"+is][0], 10, 32)
if er == nil {
var po = btc.TxPrevOut{Hash: hash.Hash, Vout: uint32(vout)}
for j := range wallet.MyBalance {
if wallet.MyBalance[j].TxPrevOut == po {
thisbal = append(thisbal, wallet.MyBalance[j])
// Add the input to our tx
tin := new(btc.TxIn)
tin.Input = wallet.MyBalance[j].TxPrevOut
tin.Sequence = 0xffffffff
tx.TxIn = append(tx.TxIn, tin)
totalinput += wallet.MyBalance[j].Value
if change_addr == nil {
change_addr = wallet.MyBalance[j].BtcAddr
}
}
}
}
}
}
}
wallet.UnlockBal()
for i := 1; ; i++ {
adridx := fmt.Sprint("adr", i)
btcidx := fmt.Sprint("btc", i)
if len(r.Form[adridx]) != 1 || len(r.Form[btcidx]) != 1 {
break
}
if len(r.Form[adridx][0]) > 1 {
addr, er := btc.NewAddrFromString(r.Form[adridx][0])
if er == nil {
am, er := btc.StringToSatoshis(r.Form[btcidx][0])
if er == nil && am > 0 {
if pay_cmd == "" {
pay_cmd = "wallet -useallinputs -send "
} else {
pay_cmd += ","
}
pay_cmd += addr.Enc58str + "=" + btc.UintToBtc(am)
tout := new(btc.TxOut)
tout.Value = am
tout.Pk_script = addr.OutScript()
tx.TxOut = append(tx.TxOut, tout)
spentsofar += am
} else {
err = "Incorrect amount (" + r.Form[btcidx][0] + ") for Output #" + fmt.Sprint(i)
goto error
}
} else {
err = "Incorrect address (" + r.Form[adridx][0] + ") for Output #" + fmt.Sprint(i)
goto error
}
}
}
if pay_cmd == "" {
err = "No inputs selected"
goto error
}
am, er := btc.StringToSatoshis(r.Form["txfee"][0])
if er != nil {
err = "Incorrect fee value: " + r.Form["txfee"][0]
goto error
}
pay_cmd += " -fee " + r.Form["txfee"][0]
spentsofar += am
if len(r.Form["change"][0]) > 1 {
addr, er := btc.NewAddrFromString(r.Form["change"][0])
if er != nil {
err = "Incorrect change address: " + r.Form["change"][0]
goto error
}
change_addr = addr
}
pay_cmd += " -change " + change_addr.String()
if totalinput > spentsofar {
// Add change output
tout := new(btc.TxOut)
tout.Value = totalinput - spentsofar
tout.Pk_script = change_addr.OutScript()
tx.TxOut = append(tx.TxOut, tout)
}
buf := new(bytes.Buffer)
zi := zip.NewWriter(buf)
was_tx := make(map[[32]byte]bool, len(thisbal))
for i := range thisbal {
if was_tx[thisbal[i].TxPrevOut.Hash] {
continue
}
was_tx[thisbal[i].TxPrevOut.Hash] = true
txid := btc.NewUint256(thisbal[i].TxPrevOut.Hash[:])
fz, _ := zi.Create("balance/" + txid.String() + ".tx")
wallet.GetRawTransaction(thisbal[i].MinedAt, txid, fz)
}
fz, _ := zi.Create("balance/unspent.txt")
for i := range thisbal {
fmt.Fprintf(fz, "%s # %.8f BTC @ %s, %d confs\n", thisbal[i].TxPrevOut.String(),
float64(thisbal[i].Value)/1e8, thisbal[i].BtcAddr.StringLab(),
1+common.Last.Block.Height-thisbal[i].MinedAt)
}
// pay_cmd.bat
if pay_cmd != "" {
fz, _ = zi.Create(common.CFG.PayCommandName)
fz.Write([]byte(pay_cmd))
}
// Raw transaction
fz, _ = zi.Create("tx2sign.txt")
fz.Write([]byte(hex.EncodeToString(tx.Serialize())))
zi.Close()
w.Header()["Content-Type"] = []string{"application/zip"}
w.Write(buf.Bytes())
return
} else {
err = "Bad request"
}
error:
s := load_template("send_error.html")
write_html_head(w, r)
s = strings.Replace(s, "<!--ERROR_MSG-->", err, 1)
w.Write([]byte(s))
write_html_tail(w)
}
// load the content of the "balance/" folder
func load_balance(showbalance bool) {
var unknownInputs, multisigInputs int
f, e := os.Open("balance/unspent.txt")
if e != nil {
println(e.Error())
return
}
rd := bufio.NewReader(f)
for {
l, _, e := rd.ReadLine()
if len(l) == 0 && e != nil {
break
}
if l[64] == '-' {
txid := btc.NewUint256FromString(string(l[:64]))
rst := strings.SplitN(string(l[65:]), " ", 2)
vout, _ := strconv.ParseUint(rst[0], 10, 32)
uns := new(btc.TxPrevOut)
copy(uns.Hash[:], txid.Hash[:])
uns.Vout = uint32(vout)
lab := ""
if len(rst) > 1 {
lab = rst[1]
}
str := string(l)
if sti := strings.Index(str, "_StealthC:"); sti != -1 {
c, e := hex.DecodeString(str[sti+10 : sti+10+64])
if e != nil {
fmt.Println("ERROR at stealth", txid.String(), vout, e.Error())
} else {
// add a new key to the wallet
sec := btc.DeriveNextPrivate(first_seed[:], c)
is_stealth[len(priv_keys)] = true
priv_keys = append(priv_keys, sec)
labels = append(labels, lab)
pub_key := btc.PublicFromPrivate(sec, true)
publ_addrs = append(publ_addrs, btc.NewAddrFromPubkey(pub_key, btc.AddrVerPubkey(*testnet)))
compressed_key = append(compressed_key, true) // stealth keys are always compressed
}
}
if _, ok := loadedTxs[txid.Hash]; !ok {
tf, _ := os.Open("balance/" + txid.String() + ".tx")
if tf != nil {
siz, _ := tf.Seek(0, os.SEEK_END)
tf.Seek(0, os.SEEK_SET)
buf := make([]byte, siz)
tf.Read(buf)
tf.Close()
th := btc.Sha2Sum(buf)
if bytes.Equal(th[:], txid.Hash[:]) {
tx, _ := btc.NewTx(buf)
if tx != nil {
loadedTxs[txid.Hash] = tx
} else {
println("transaction is corrupt:", txid.String())
}
} else {
println("transaction file is corrupt:", txid.String())
os.Exit(1)
}
} else {
println("transaction file not found:", txid.String())
os.Exit(1)
}
}
// Sum up all the balance and check if we have private key for this input
uo := UO(uns)
add_it := true
if !btc.IsP2SH(uo.Pk_script) {
fnd := false
for j := range publ_addrs {
if publ_addrs[j].Owns(uo.Pk_script) {
fnd = true
break
}
}
if !fnd {
if *onlvalid {
add_it = false
}
if showbalance {
unknownInputs++
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "does not belong to your wallet (cannot sign it)")
}
}
}
} else {
if *onlvalid {
add_it = false
}
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "belongs to a multisig address")
}
multisigInputs++
}
if add_it {
unspentOuts = append(unspentOuts, uns)
unspentOutsLabel = append(unspentOutsLabel, lab)
totBtc += UO(uns).Value
}
}
}
f.Close()
fmt.Printf("You have %.8f BTC in %d unspent outputs. %d inputs are multisig type\n",
float64(totBtc)/1e8, len(unspentOuts), multisigInputs)
if showbalance {
if unknownInputs > 0 {
fmt.Printf("WARNING: Some inputs (%d) cannot be spent with this password (-v to print them)\n", unknownInputs)
}
}
}
"time"
//"github.com/piotrnar/gocoin/qdb"
"github.com/piotrnar/gocoin/btc/qdb"
"github.com/piotrnar/gocoin/tools/utils"
)
const (
TheGenesis = "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"
)
var (
Magic [4]byte = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
StartTime time.Time
TheBlockChain *btc.Chain
GenesisBlock *btc.Uint256 = btc.NewUint256FromString(TheGenesis)
TrustUpTo uint32
GlobalExit bool
// CommandLineSwitches
LastTrustedBlock string // -t
GocoinHomeDir string // -d
OnlyStoreBlocks bool // -b
MaxNetworkConns uint // -n
GCPerc int // -g
SeedNode string // -s
DoThePings bool // -p
MemForBlocks uint // -m (in megabytes)
)
func parse_command_line() {
func dl_payment(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
var err string
if len(r.Form["outcnt"]) == 1 {
var thisbal btc.AllUnspentTx
var pay_cmd string
var totalinput, spentsofar uint64
var change_addr *btc.BtcAddr
var multisig_input []*wallet.MultisigAddr
var invalid_tx bool
addrs_to_msign := make(map[string]bool)
tx := new(btc.Tx)
tx.Version = 1
tx.Lock_time = 0
outcnt, _ := strconv.ParseUint(r.Form["outcnt"][0], 10, 32)
wallet.LockBal()
for i := 1; i <= int(outcnt); i++ {
is := fmt.Sprint(i)
if len(r.Form["txout"+is]) == 1 && r.Form["txout"+is][0] == "on" {
hash := btc.NewUint256FromString(r.Form["txid"+is][0])
if hash != nil {
vout, er := strconv.ParseUint(r.Form["txvout"+is][0], 10, 32)
if er == nil {
var po = btc.TxPrevOut{Hash: hash.Hash, Vout: uint32(vout)}
for j := range wallet.MyBalance {
if wallet.MyBalance[j].TxPrevOut == po {
thisbal = append(thisbal, wallet.MyBalance[j])
// Add the input to our tx
tin := new(btc.TxIn)
tin.Input = wallet.MyBalance[j].TxPrevOut
tin.Sequence = 0xffffffff
tx.TxIn = append(tx.TxIn, tin)
// Add new multisig address description
_, msi := wallet.IsMultisig(wallet.MyBalance[j].BtcAddr)
multisig_input = append(multisig_input, msi)
if msi != nil {
for ai := range msi.ListOfAddres {
addrs_to_msign[msi.ListOfAddres[ai]] = true
}
}
// Add the value to total input value
totalinput += wallet.MyBalance[j].Value
// If no change specified, use the first input addr as it
if change_addr == nil {
change_addr = wallet.MyBalance[j].BtcAddr
}
}
}
}
}
}
}
wallet.UnlockBal()
for i := 1; ; i++ {
adridx := fmt.Sprint("adr", i)
btcidx := fmt.Sprint("btc", i)
if len(r.Form[adridx]) != 1 || len(r.Form[btcidx]) != 1 {
break
}
if len(r.Form[adridx][0]) > 1 {
addr, er := btc.NewAddrFromString(r.Form[adridx][0])
if er == nil {
am, er := btc.StringToSatoshis(r.Form[btcidx][0])
if er == nil && am > 0 {
if pay_cmd == "" {
pay_cmd = "wallet -useallinputs -send "
} else {
pay_cmd += ","
}
pay_cmd += addr.Enc58str + "=" + btc.UintToBtc(am)
tout := new(btc.TxOut)
tout.Value = am
tout.Pk_script = addr.OutScript()
if tout.Pk_script != nil {
tx.TxOut = append(tx.TxOut, tout)
} else {
invalid_tx = true
}
spentsofar += am
} else {
err = "Incorrect amount (" + r.Form[btcidx][0] + ") for Output #" + fmt.Sprint(i)
goto error
}
} else {
err = "Incorrect address (" + r.Form[adridx][0] + ") for Output #" + fmt.Sprint(i)
goto error
}
}
}
if pay_cmd == "" {
err = "No inputs selected"
goto error
}
am, er := btc.StringToSatoshis(r.Form["txfee"][0])
if er != nil {
err = "Incorrect fee value: " + r.Form["txfee"][0]
goto error
}
pay_cmd += " -fee " + r.Form["txfee"][0]
spentsofar += am
if len(r.Form["change"][0]) > 1 {
addr, er := btc.NewAddrFromString(r.Form["change"][0])
if er != nil {
err = "Incorrect change address: " + r.Form["change"][0]
goto error
}
change_addr = addr
}
pay_cmd += " -change " + change_addr.String()
if totalinput > spentsofar {
// Add change output
tout := new(btc.TxOut)
tout.Value = totalinput - spentsofar
tout.Pk_script = change_addr.OutScript()
tx.TxOut = append(tx.TxOut, tout)
}
buf := new(bytes.Buffer)
zi := zip.NewWriter(buf)
was_tx := make(map[[32]byte]bool, len(thisbal))
for i := range thisbal {
if was_tx[thisbal[i].TxPrevOut.Hash] {
continue
}
was_tx[thisbal[i].TxPrevOut.Hash] = true
txid := btc.NewUint256(thisbal[i].TxPrevOut.Hash[:])
fz, _ := zi.Create("balance/" + txid.String() + ".tx")
wallet.GetRawTransaction(thisbal[i].MinedAt, txid, fz)
}
fz, _ := zi.Create("balance/unspent.txt")
for i := range thisbal {
fmt.Fprintf(fz, "%s # %.8f BTC @ %s, %d confs\n", thisbal[i].TxPrevOut.String(),
float64(thisbal[i].Value)/1e8, thisbal[i].BtcAddr.StringLab(),
1+common.Last.Block.Height-thisbal[i].MinedAt)
}
if len(addrs_to_msign) > 0 {
// Multisig (or mixed) transaction ...
for i := range multisig_input {
if multisig_input[i] == nil {
continue
}
d, er := hex.DecodeString(multisig_input[i].RedeemScript)
if er != nil {
println("ERROR parsing hex RedeemScript:", er.Error())
continue
}
ms, er := btc.NewMultiSigFromP2SH(d)
if er != nil {
println("ERROR parsing bin RedeemScript:", er.Error())
continue
}
tx.TxIn[i].ScriptSig = ms.Bytes()
}
fz, _ = zi.Create("multi2sign.txt")
fz.Write([]byte(hex.EncodeToString(tx.Serialize())))
fz, _ = zi.Create("multi_" + common.CFG.PayCommandName)
for k, _ := range addrs_to_msign {
fmt.Fprintln(fz, "wallet -msign", k, "-raw ...")
}
} else {
// Non-multisig transaction ...
if !invalid_tx {
fz, _ = zi.Create("tx2sign.txt")
fz.Write([]byte(hex.EncodeToString(tx.Serialize())))
}
if pay_cmd != "" {
fz, _ = zi.Create(common.CFG.PayCommandName)
fz.Write([]byte(pay_cmd))
}
}
zi.Close()
w.Header()["Content-Type"] = []string{"application/zip"}
w.Write(buf.Bytes())
return
} else {
err = "Bad request"
}
error:
s := load_template("send_error.html")
write_html_head(w, r)
s = strings.Replace(s, "<!--ERROR_MSG-->", err, 1)
w.Write([]byte(s))
write_html_tail(w)
}
// load the content of the "balance/" folder
func load_balance(showbalance bool) {
var unknownInputs, multisigInputs int
f, e := os.Open("balance/unspent.txt")
if e != nil {
println(e.Error())
return
}
rd := bufio.NewReader(f)
for {
l, _, e := rd.ReadLine()
if len(l) == 0 && e != nil {
break
}
if l[64] == '-' {
txid := btc.NewUint256FromString(string(l[:64]))
rst := strings.SplitN(string(l[65:]), " ", 2)
vout, _ := strconv.ParseUint(rst[0], 10, 32)
uns := new(btc.TxPrevOut)
copy(uns.Hash[:], txid.Hash[:])
uns.Vout = uint32(vout)
lab := ""
if len(rst) > 1 {
lab = rst[1]
}
if _, ok := loadedTxs[txid.Hash]; !ok {
tf, _ := os.Open("balance/" + txid.String() + ".tx")
if tf != nil {
siz, _ := tf.Seek(0, os.SEEK_END)
tf.Seek(0, os.SEEK_SET)
buf := make([]byte, siz)
tf.Read(buf)
tf.Close()
th := btc.Sha2Sum(buf)
if bytes.Equal(th[:], txid.Hash[:]) {
tx, _ := btc.NewTx(buf)
if tx != nil {
loadedTxs[txid.Hash] = tx
} else {
println("transaction is corrupt:", txid.String())
}
} else {
println("transaction file is corrupt:", txid.String())
os.Exit(1)
}
} else {
println("transaction file not found:", txid.String())
os.Exit(1)
}
}
unspentOuts = append(unspentOuts, uns)
unspentOutsLabel = append(unspentOutsLabel, lab)
// Sum up all the balance and check if we have private key for this input
uo := UO(uns)
totBtc += UO(uns).Value
if !btc.IsP2SH(uo.Pk_script) {
fnd := false
for j := range publ_addrs {
if publ_addrs[j].Owns(uo.Pk_script) {
fnd = true
break
}
}
if showbalance && !fnd {
unknownInputs++
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "does not belong to your wallet (cannot sign it)")
}
}
} else {
if *verbose {
ss := uns.String()
ss = ss[:8] + "..." + ss[len(ss)-12:]
fmt.Println(ss, "belongs to a multisig address")
}
multisigInputs++
}
}
}
f.Close()
fmt.Printf("You have %.8f BTC in %d unspent outputs. %d inputs are multisig type\n",
float64(totBtc)/1e8, len(unspentOuts), multisigInputs)
if showbalance {
if unknownInputs > 0 {
fmt.Printf("WARNING: Some inputs (%d) cannot be spent with this password (-v to print them)\n", unknownInputs)
}
}
}
func main() {
if len(os.Args) < 2 {
fmt.Println("Specify at least one parameter - a path to the blk0000?.dat files.")
fmt.Println("By default it should be:", utils.BitcoinHome()+"blocks")
fmt.Println()
fmt.Println("If you specify a second parameter, that's where output data will be stored.")
fmt.Println("Otherwise the output data will go to Gocoin's default data folder.")
return
}
BtcRootDir = RemoveLastSlash(os.Args[1])
fn := BtcRootDir + string(os.PathSeparator) + "blk00000.dat"
fmt.Println("Looking for file", fn, "...")
f, e := os.Open(fn)
if e != nil {
println(e.Error())
os.Exit(1)
}
_, e = f.Read(Magic[:])
f.Close()
if e != nil {
println(e.Error())
os.Exit(1)
}
if len(os.Args) > 2 {
GocoinHomeDir = RemoveLastSlash(os.Args[2]) + string(os.PathSeparator)
} else {
GocoinHomeDir = utils.BitcoinHome() + "gocoin" + string(os.PathSeparator)
}
if Magic == [4]byte{0x0B, 0x11, 0x09, 0x07} {
// testnet3
fmt.Println("There are Testnet3 blocks")
GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
GocoinHomeDir += "tstnet" + string(os.PathSeparator)
} else if Magic == [4]byte{0xF9, 0xBE, 0xB4, 0xD9} {
fmt.Println("There are valid Bitcoin blocks")
GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
GocoinHomeDir += "btcnet" + string(os.PathSeparator)
} else {
println("blk00000.dat has an unexpected magic")
os.Exit(1)
}
fmt.Println("Importing blockchain data into", GocoinHomeDir, "...")
if exists(GocoinHomeDir+"blockchain.dat") ||
exists(GocoinHomeDir+"blockchain.idx") ||
exists(GocoinHomeDir+"unspent") {
println("Destination folder contains some database files.")
println("Either move them somewhere else or delete manually.")
println("None of the following files/folders must exist before you proceed:")
println(" *", GocoinHomeDir+"blockchain.dat")
println(" *", GocoinHomeDir+"blockchain.idx")
println(" *", GocoinHomeDir+"unspent")
os.Exit(1)
}
import_blockchain(BtcRootDir)
}
func dl_payment(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
var err string
r.ParseForm()
if len(r.Form["outcnt"]) == 1 {
var thisbal btc.AllUnspentTx
var pay_cmd string
outcnt, _ := strconv.ParseUint(r.Form["outcnt"][0], 10, 32)
wallet.LockBal()
for i := 1; i <= int(outcnt); i++ {
is := fmt.Sprint(i)
if len(r.Form["txout"+is]) == 1 && r.Form["txout"+is][0] == "on" {
hash := btc.NewUint256FromString(r.Form["txid"+is][0])
if hash != nil {
vout, er := strconv.ParseUint(r.Form["txvout"+is][0], 10, 32)
if er == nil {
var po = btc.TxPrevOut{Hash: hash.Hash, Vout: uint32(vout)}
for j := range wallet.MyBalance {
if wallet.MyBalance[j].TxPrevOut == po {
thisbal = append(thisbal, wallet.MyBalance[j])
}
}
}
}
}
}
wallet.UnlockBal()
for i := 1; ; i++ {
is := fmt.Sprint(i)
if len(r.Form["adr"+is]) != 1 {
break
}
if len(r.Form["btc"+is]) != 1 {
break
}
if len(r.Form["adr"+is][0]) > 1 {
addr, er := btc.NewAddrFromString(r.Form["adr"+is][0])
if er == nil {
am, er := strconv.ParseFloat(r.Form["btc"+is][0], 64)
if er == nil && am > 0 {
if pay_cmd == "" {
pay_cmd = "wallet -useallinputs -send "
} else {
pay_cmd += ","
}
pay_cmd += addr.Enc58str + "=" + fmt.Sprintf("%.8f", am)
} else {
err = "Incorrect amount (" + r.Form["btc"+is][0] + ") for Output #" + is
goto error
}
} else {
err = "Incorrect address (" + r.Form["adr"+is][0] + ") for Output #" + is
goto error
}
}
}
if pay_cmd != "" && len(r.Form["txfee"]) == 1 {
pay_cmd += " -fee " + r.Form["txfee"][0]
}
if pay_cmd != "" && len(r.Form["change"]) == 1 && len(r.Form["change"][0]) > 1 {
pay_cmd += " -change " + r.Form["change"][0]
}
buf := new(bytes.Buffer)
zi := zip.NewWriter(buf)
was_tx := make(map[[32]byte]bool, len(thisbal))
for i := range thisbal {
if was_tx[thisbal[i].TxPrevOut.Hash] {
continue
}
was_tx[thisbal[i].TxPrevOut.Hash] = true
txid := btc.NewUint256(thisbal[i].TxPrevOut.Hash[:])
fz, _ := zi.Create("balance/" + txid.String() + ".tx")
wallet.GetRawTransaction(thisbal[i].MinedAt, txid, fz)
}
fz, _ := zi.Create("balance/unspent.txt")
for i := range thisbal {
fmt.Fprintf(fz, "%s # %.8f BTC @ %s, %d confs\n", thisbal[i].TxPrevOut.String(),
float64(thisbal[i].Value)/1e8, thisbal[i].BtcAddr.StringLab(),
1+common.Last.Block.Height-thisbal[i].MinedAt)
}
if pay_cmd != "" {
fz, _ = zi.Create("pay_cmd.txt")
fz.Write([]byte(pay_cmd))
}
zi.Close()
w.Header()["Content-Type"] = []string{"application/zip"}
w.Write(buf.Bytes())
return
} else {
err = "Bad request"
}
error:
s := load_template("send_error.html")
write_html_head(w, r)
s = strings.Replace(s, "<!--ERROR_MSG-->", err, 1)
w.Write([]byte(s))
write_html_tail(w)
}
func host_init() {
var e error
BtcRootDir := utils.BitcoinHome()
if common.CFG.Datadir == "" {
common.GocoinHomeDir = BtcRootDir + "gocoin" + string(os.PathSeparator)
} else {
common.GocoinHomeDir = common.CFG.Datadir + string(os.PathSeparator)
}
if common.CFG.Testnet { // testnet3
common.GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
common.Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
common.GocoinHomeDir += "tstnet" + string(os.PathSeparator)
common.AddrVersion = 0x6f
BtcRootDir += "testnet3" + string(os.PathSeparator)
network.AlertPubKey, _ = hex.DecodeString("04302390343f91cc401d56d68b123028bf52e5fca1939df127f63c6467cdf9c8e2c14b61104cf817d0b780da337893ecc4aaff1309e536162dabbdb45200ca2b0a")
common.MaxPeersNeeded = 100
} else {
common.GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
common.Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
common.GocoinHomeDir += "btcnet" + string(os.PathSeparator)
common.AddrVersion = 0x00
network.AlertPubKey, _ = hex.DecodeString("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284")
common.MaxPeersNeeded = 1000
}
// Lock the folder
os.MkdirAll(common.GocoinHomeDir, 0770)
os.MkdirAll(common.GocoinHomeDir+"wallet", 0770)
LockDatabaseDir()
fi, e := os.Stat(common.GocoinHomeDir + "blockchain.idx")
if e != nil {
os.RemoveAll(common.GocoinHomeDir)
fmt.Println("You seem to be running Gocoin for the fist time on this PC")
fi, e = os.Stat(BtcRootDir + "blocks/blk00000.dat")
if e == nil && fi.Size() > 1024*1024 {
fmt.Println("There is a database from Satoshi client on your disk...")
if textui.AskYesNo("Do you want to import this database into Gocoin?") {
import_blockchain(BtcRootDir + "blocks")
}
}
}
fmt.Println("Opening blockchain... (Ctrl-C to interrupt)")
__exit := make(chan bool)
__done := make(chan bool)
go func() {
for {
select {
case s := <-killchan:
fmt.Println(s)
btc.AbortNow = true
case <-__exit:
__done <- true
return
}
}
}()
sta := time.Now().UnixNano()
common.BlockChain = btc.NewChain(common.GocoinHomeDir, common.GenesisBlock, common.FLAG.Rescan)
sto := time.Now().UnixNano()
if btc.AbortNow {
fmt.Printf("Blockchain opening aborted after %.3f seconds\n", float64(sto-sta)/1e9)
UnlockDatabaseDir()
os.Exit(1)
}
fmt.Printf("Blockchain open in %.3f seconds\n", float64(sto-sta)/1e9)
common.BlockChain.Unspent.SetTxNotify(wallet.TxNotify)
common.StartTime = time.Now()
__exit <- true
_ = <-__done
}
// Download (and re-assemble) raw transaction from blockexplorer.com
func GetTxFromExplorer(txid *btc.Uint256) ([]byte, []byte) {
url := "http://blockexplorer.com/rawtx/" + txid.String()
r, er := http.Get(url)
if er == nil && r.StatusCode == 200 {
defer r.Body.Close()
c, _ := ioutil.ReadAll(r.Body)
var txx onetx
er = json.Unmarshal(c[:], &txx)
if er == nil {
// This part looks weird, but this is how I solved seq=FFFFFFFF, if the field not present:
for i := range txx.In {
txx.In[i].Sequence = 0xffffffff
}
json.Unmarshal(c[:], &txx)
// ... end of the weird solution
tx := new(btc.Tx)
tx.Version = txx.Ver
tx.TxIn = make([]*btc.TxIn, len(txx.In))
for i := range txx.In {
tx.TxIn[i] = new(btc.TxIn)
tx.TxIn[i].Input.Hash = btc.NewUint256FromString(txx.In[i].Prev_out.Hash).Hash
tx.TxIn[i].Input.Vout = txx.In[i].Prev_out.N
if txx.In[i].Prev_out.N == 0xffffffff &&
txx.In[i].Prev_out.Hash == "0000000000000000000000000000000000000000000000000000000000000000" {
tx.TxIn[i].ScriptSig, _ = hex.DecodeString(txx.In[i].Coinbase)
} else {
tx.TxIn[i].ScriptSig, _ = btc.DecodeScript(txx.In[i].ScriptSig)
}
tx.TxIn[i].Sequence = txx.In[i].Sequence
}
tx.TxOut = make([]*btc.TxOut, len(txx.Out))
for i := range txx.Out {
am, er := btc.StringToSatoshis(txx.Out[i].Value)
if er != nil {
fmt.Println("Incorrect BTC amount", txx.Out[i].Value, er.Error())
return nil, nil
}
tx.TxOut[i] = new(btc.TxOut)
tx.TxOut[i].Value = am
tx.TxOut[i].Pk_script, _ = btc.DecodeScript(txx.Out[i].ScriptPubKey)
}
tx.Lock_time = txx.Lock_time
rawtx := tx.Serialize()
if txx.Size != uint(len(rawtx)) {
fmt.Printf("Transaction size mismatch: %d expexted, %d decoded\n", txx.Size, len(rawtx))
return nil, rawtx
}
curid := btc.NewSha2Hash(rawtx)
if !curid.Equal(txid) {
fmt.Println("The downloaded transaction does not match its ID.", txid.String())
return nil, rawtx
}
return rawtx, rawtx
} else {
fmt.Println("json.Unmarshal:", er.Error())
}
} else {
if er != nil {
fmt.Println("http.Get:", er.Error())
} else {
fmt.Println("StatusCode=", r.StatusCode)
}
}
return nil, nil
}