// GetRawTx return rawtx of specifc tx.
func GetRawTx(egn engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
var rlt *pp.EmptyRes
for {
req := pp.GetRawTxReq{}
if err := c.BindJSON(&req); err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
coin, err := egn.GetCoin(req.GetCoinType())
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
rawtx, err := coin.GetRawTx(req.GetTxid())
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
res := pp.GetRawTxRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
CoinType: req.CoinType,
Rawtx: pp.PtrString(rawtx),
}
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
// GetAddresses get all addresses in wallet.
// mode: GET
// url: /api/v1/wallet/addresses?id=[:id]
// params:
// id: wallet id.
func GetAddresses(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
var rlt *pp.EmptyRes
for {
id := r.FormValue("id")
if id == "" {
rlt = pp.MakeErrRes(errors.New("id is required"))
break
}
addrs, err := wallet.GetAddresses(id)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
res := struct {
Result *pp.Result `json:"result"`
Addresses []string `json:"addresses"`
}{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Addresses: addrs,
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// NewAddress create address in wallet.
// mode: POST
// url: /api/v1/wallet/:id/address?&id=[:id]
// params:
// id: wallet id.
func NewAddress(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
var rlt *pp.EmptyRes
for {
// get wallet id
wltID := r.FormValue("id")
if wltID == "" {
rlt = pp.MakeErrRes(errors.New("id is required"))
break
}
addrEntries, err := wallet.NewAddresses(wltID, 1)
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_ServerError)
break
}
res := struct {
Result *pp.Result
Address string `json:"address"`
}{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Address: addrEntries[0].Address,
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// GetAddrBalance get balance of specific address.
func GetAddrBalance(ee engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
var rlt *pp.EmptyRes
for {
req := pp.GetAddrBalanceReq{}
if err := c.BindJSON(&req); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
coin, err := ee.GetCoin(req.GetCoinType())
if err != nil {
rlt = pp.MakeErrRes(err)
logger.Error(err.Error())
break
}
addrs := strings.Split(req.GetAddrs(), ",")
b, err := coin.GetBalance(addrs)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
res := pp.GetAddrBalanceRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Balance: &b,
}
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
// GetBalance return balance of specific account.
func GetAccountBalance(ee engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
rlt := &pp.EmptyRes{}
for {
req := pp.GetAccountBalanceReq{}
if err := c.BindJSON(&req); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
// validate pubkey
pubkey := req.GetPubkey()
if err := validatePubkey(pubkey); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongPubkey)
break
}
a, err := ee.GetAccount(pubkey)
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_NotExits)
break
}
bal := a.GetBalance(req.GetCoinType())
bres := pp.GetAccountBalanceRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Balance: &pp.Balance{Amount: pp.PtrUint64(bal)},
}
return c.SendJSON(&bres)
}
return c.Error(rlt)
}
}
// GetAccount get account that matchs the condition in url param.
// mode: GET
// url: /api/v1/account?active=[:active]
// params:
// active: optional condition, must be 1, if not exist, then retun all accounts.
func GetAccount(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
// get active
res := struct {
Result *pp.Result `json:"result"`
Accounts []accountResult `json:"accounts,omitempty"`
}{}
active := r.FormValue("active")
switch active {
case "1":
a, err := account.GetActive()
if err != nil {
// no active account.
res.Result = pp.MakeResult(pp.ErrCode_NotExits, err.Error())
sendJSON(w, &res)
return
}
res.Result = pp.MakeResultWithCode(pp.ErrCode_Success)
res.Accounts = make([]accountResult, 1)
res.Accounts[0].Pubkey = a.Pubkey
res.Accounts[0].WalletID = make(map[string]string)
for cp, id := range a.WltIDs {
res.Accounts[0].WalletID[cp] = id
}
sendJSON(w, &res)
case "":
accounts := account.GetAll()
res.Result = pp.MakeResultWithCode(pp.ErrCode_Success)
res.Accounts = func(accounts []account.Account) []accountResult {
as := make([]accountResult, len(accounts))
for i, a := range accounts {
as[i].Pubkey = a.Pubkey
as[i].WalletID = make(map[string]string)
for cp, id := range a.WltIDs {
as[i].WalletID[cp] = id
}
}
return as
}(accounts)
sendJSON(w, &res)
default:
sendJSON(w, pp.MakeErrResWithCode(pp.ErrCode_WrongRequest))
}
}
}
func btcWithdraw(rp *ReqParams) (*pp.WithdrawalRes, *pp.EmptyRes) {
ee := rp.Values["engine"].(engine.Exchange)
acnt := rp.Values["account"].(account.Accounter)
amt := rp.Values["amt"].(uint64)
ct := rp.Values["cointype"].(string)
toAddr := rp.Values["toAddr"].(string)
// verify the toAddr
if _, err := cipher.BitcoinDecodeBase58Address(toAddr); err != nil {
return nil, pp.MakeErrRes(errors.New("invalid bitcoin address"))
}
var success bool
var btcTxRlt *BtcTxResult
var err error
// decrease balance and check if the balance is sufficient.
if err := acnt.DecreaseBalance(ct, amt+ee.GetBtcFee()); err != nil {
return nil, pp.MakeErrRes(err)
}
defer func() {
if !success {
go func() {
if btcTxRlt != nil {
ee.PutUtxos(bitcoin.Type, btcTxRlt.UsingUtxos)
}
acnt.IncreaseBalance(ct, amt+ee.GetBtcFee())
}()
} else {
//TODO: handle the saving failure.
ee.SaveAccount()
}
}()
btcTxRlt, err = createBtcWithdrawTx(ee, amt, toAddr)
if err != nil {
return nil, pp.MakeErrRes(errors.New("failed to create withdrawal tx"))
}
rawtx, err := btcTxRlt.Tx.Serialize()
if err != nil {
return nil, pp.MakeErrRes(errors.New("tx serialize failed"))
}
newTxid, err := bitcoin.BroadcastTx(hex.EncodeToString(rawtx))
if err != nil {
logger.Error(err.Error())
return nil, pp.MakeErrResWithCode(pp.ErrCode_BroadcastTxFail)
}
success = true
if btcTxRlt.ChangeAddr != "" {
logger.Debug("change address:%s", btcTxRlt.ChangeAddr)
ee.WatchAddress(ct, btcTxRlt.ChangeAddr)
}
resp := pp.WithdrawalRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
NewTxid: &newTxid,
}
return &resp, nil
}
// GetCoins get supported coins.
func GetCoins(egn engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
coins := pp.CoinsRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Coins: egn.GetSupportCoins(),
}
return c.SendJSON(&coins)
}
}
// JSON encrypt the data and write response.
func (c *Context) SendJSON(data interface{}) error {
encData, nonce, err := pp.Encrypt(data, c.Pubkey, c.ServSeckey)
if err != nil {
return err
}
res := pp.EncryptRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Encryptdata: encData,
Nonce: nonce,
}
return c.Resp.SendJSON(res)
}
// CreateWallet api for creating local wallet.
// mode: POST
// url: /api/v1/wallet?type=[:type]&seed=[:seed]
// params:
// type: bitcoin or skycoin
// seed: wallet seed.
func CreateWallet(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
rlt := &pp.EmptyRes{}
for {
// get coin type
cp := r.FormValue("type")
// get seed
sd := r.FormValue("seed")
if sd == "" {
rlt = pp.MakeErrRes(errors.New("seed is required"))
break
}
wlt, err := wallet.New(cp, sd)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_ServerError)
break
}
// bind the wallet to current account.
a, err := account.GetActive()
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
a.WltIDs[cp] = wlt.GetID()
// update the account.
account.Set(a)
res := struct {
Result *pp.Result `json:"result"`
ID string `json:"id"`
}{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
ID: wlt.GetID(),
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// GetNewAddress account create new address for depositing.
func GetNewAddress(ee engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
rlt := &pp.EmptyRes{}
for {
req := pp.GetDepositAddrReq{}
if err := c.BindJSON(&req); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
// validate pubkey
pubkey := req.GetPubkey()
if err := validatePubkey(pubkey); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongPubkey)
break
}
at, err := ee.GetAccount(pubkey)
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_NotExits)
break
}
ct := req.GetCoinType()
// get the new address for depositing
addr := ee.GetNewAddress(ct)
// add the new address to engin for watching it's utxos.
at.AddDepositAddress(ct, addr)
ee.WatchAddress(ct, addr)
ds := pp.GetDepositAddrRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
CoinType: req.CoinType,
Address: &addr,
}
return c.SendJSON(&ds)
}
return c.Error(rlt)
}
}
// GetOrders get order list.
func GetOrders(egn engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
rlt := &pp.EmptyRes{}
for {
req := pp.GetOrderReq{}
if err := c.BindJSON(&req); err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
op, err := order.TypeFromStr(req.GetType())
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
logger.Error(err.Error())
break
}
ords, err := egn.GetOrders(req.GetCoinPair(), op, req.GetStart(), req.GetEnd())
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
logger.Error(err.Error())
break
}
res := pp.GetOrderRes{
CoinPair: req.CoinPair,
Type: req.Type,
Orders: make([]*pp.Order, len(ords)),
}
for i := range ords {
res.Orders[i] = &pp.Order{
Id: &ords[i].ID,
Type: req.Type,
Price: &ords[i].Price,
Amount: &ords[i].Amount,
RestAmt: &ords[i].RestAmt,
CreatedAt: &ords[i].CreatedAt,
}
}
res.Result = pp.MakeResultWithCode(pp.ErrCode_Success)
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
// UpdateCredit update credit.
func UpdateCredit(ee engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
var rlt *pp.EmptyRes
for {
req := pp.UpdateCreditReq{}
if err := c.BindJSON(&req); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
// validate the dst pubkey.
dstPubkey := req.GetDst()
if err := validatePubkey(dstPubkey); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongPubkey)
break
}
// get account.
a, err := ee.GetAccount(dstPubkey)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongPubkey)
break
}
// get coin type.
if err := a.SetBalance(req.GetCoinType(), req.GetAmount()); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
ee.SaveAccount()
res := pp.UpdateCreditRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
}
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
// SignRawTx sign transaction.
// mode: POST
// url: /api/v1/signr_awtx?coin_type=[:coin_type]&rawtx=[:rawtx]
// params:
// coin_type: skycoin or bitcoin.
// rawtx: raw transaction.
func SignRawTx(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
var rlt *pp.EmptyRes
for {
// check coin type
cp := r.FormValue("coin_type")
// get raw tx
rawtx := r.FormValue("rawtx")
if rawtx == "" {
err := errors.New("rawtx is empty")
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
coin, err := se.GetCoin(cp)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
tx, err := coin.SignRawTx(rawtx, getPrivKey(cp))
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
res := struct {
Result *pp.Result `json:"result"`
Rawtx string `json:"rawtx"`
}{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Rawtx: tx,
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// GetTx get transaction by id.
func GetTx(egn engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
var rlt *pp.EmptyRes
for {
req := pp.GetTxReq{}
if err := c.BindJSON(&req); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
coin, err := egn.GetCoin(req.GetCoinType())
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
// brief validate transaction id
if !coin.ValidateTxid(req.GetTxid()) {
rlt = pp.MakeErrRes(errors.New("invalid transaction id"))
break
}
tx, err := coin.GetTx(req.GetTxid())
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
res := pp.GetTxRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
CoinType: req.CoinType,
Tx: tx,
}
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
// GetUtxos gets bitcoin utxos of specific addresses.
func (btc *Bitcoin) GetUtxos(addrs []string) (interface{}, error) {
utxos, err := GetUnspentOutputs(addrs)
if err != nil {
return nil, err
}
btcUxs := make([]*pp.BtcUtxo, len(utxos))
for i, u := range utxos {
btcUxs[i] = &pp.BtcUtxo{
Address: pp.PtrString(u.GetAddress()),
Txid: pp.PtrString(u.GetTxid()),
Vout: pp.PtrUint32(u.GetVout()),
Amount: pp.PtrUint64(u.GetAmount()),
}
}
var res = pp.GetUtxoRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
BtcUtxos: btcUxs,
}
return res, nil
}
// GetKeys get keys of specific address in wallet.
// mode: GET
// url: /api/v1/wallet/address/keys?id=[:id]&address=[:address]
func GetKeys(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
var rlt *pp.EmptyRes
for {
// get wallet id
wltID := r.FormValue("id")
if wltID == "" {
rlt = pp.MakeErrRes(errors.New("no id"))
break
}
// get address
addr := r.FormValue("address")
if addr == "" {
rlt = pp.MakeErrRes(errors.New("no address"))
break
}
p, s, err := wallet.GetKeypair(wltID, addr)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_ServerError)
break
}
res := struct {
Result *pp.Result
Pubkey string `json:"pubkey"`
Seckey string `json:"seckey"`
}{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Pubkey: p,
Seckey: s,
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// ActiveAccount active the specific account.
// mode: PUT
// url: /api/v1/account/state?pubkey=[:pubkey]
func ActiveAccount(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
var rlt *pp.EmptyRes
for {
// get pubkey
pk := r.FormValue("pubkey")
if pk == "" {
logger.Error("pubkey is empty")
rlt = pp.MakeErrRes(errors.New("pubkey is empty"))
break
}
// validate the pubkey
if _, err := cipher.PubKeyFromHex(pk); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(errors.New("invalid pubkey"))
break
}
// active the account
if err := account.SetActive(pk); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
res := struct {
Result *pp.Result
}{
pp.MakeResultWithCode(pp.ErrCode_Success),
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// InjectTx inject transaction.
func InjectTx(egn engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
var rlt *pp.EmptyRes
for {
req := pp.InjectTxnReq{}
if err := c.BindJSON(&req); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
// get coin gateway
coin, err := egn.GetCoin(req.GetCoinType())
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
// inject tx.
txid, err := coin.InjectTx(req.GetTx())
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
res := pp.InjectTxnRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Txid: pp.PtrString(txid),
}
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
// Withdraw api for handlering withdraw process.
func Withdraw(ee engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
rlt := &pp.EmptyRes{}
for {
reqParam, err := getWithdrawReqParams(c, ee)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
cp := reqParam.Values["cointype"].(string)
a := reqParam.Values["account"].(account.Accounter)
amt := reqParam.Values["amt"].(uint64)
outAddr := reqParam.Values["outAddr"].(string)
// get handler for creating txIns and txOuts base on the coin type.
createTxInOut, err := getTxInOutHandler(cp)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
// create txIns and txOuts.
inOutSet, err := createTxInOut(ee, a, amt, outAddr)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
var success bool
defer func() {
if !success {
// if not success, invoke the teardown, for putting back utxos, and reset balance.
inOutSet.Teardown()
}
}()
// get coin gateway.
coin, err := ee.GetCoin(cp)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
// create raw tx
rawtx, err := coin.CreateRawTx(inOutSet.TxIns, inOutSet.TxOuts)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
// sign the tx
rawtx, err = coin.SignRawTx(rawtx, getAddrPrivKey(ee, cp))
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
// inject the transaction.
txid, err := coin.InjectTx(rawtx)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
success = true
resp := pp.WithdrawalRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
NewTxid: &txid,
}
return c.SendJSON(&resp)
}
return c.Error(rlt)
}
}
func skyWithdrawl(nodeAddr string, rp *ReqParams) (*pp.WithdrawalRes, *pp.EmptyRes) {
ee := rp.Values["engine"].(engine.Exchange)
acnt := rp.Values["account"].(account.Accounter)
amt := rp.Values["amt"].(uint64)
ct := rp.Values["cointype"].(string)
toAddr := rp.Values["toAddr"].(string)
if err := skycoin.VerifyAmount(amt); err != nil {
return nil, pp.MakeErrRes(err)
}
// verify the toAddr
if _, err := cipher.DecodeBase58Address(toAddr); err != nil {
return nil, pp.MakeErrRes(errors.New("invalid skycoin address"))
}
var success bool
var skyTxRlt *SkyTxResult
var err error
if err := acnt.DecreaseBalance(ct, amt); err != nil {
return nil, pp.MakeErrRes(err)
}
defer func() {
if !success {
go func() {
if skyTxRlt != nil {
ee.PutUtxos(skycoin.Type, skyTxRlt.UsingUtxos)
}
acnt.IncreaseBalance(ct, amt)
}()
} else {
//TODO: handle the saving failure.
ee.SaveAccount()
}
}()
skyTxRlt, err = createSkyWithdrawTx(ee, amt, toAddr)
if err != nil {
return nil, pp.MakeErrRes(errors.New("failed to create withdrawal tx"))
}
rawtx, err := skyTxRlt.Tx.Serialize()
if err != nil {
return nil, pp.MakeErrRes(errors.New("skycoin tx serialize failed"))
}
newTxid, err := skycoin.BroadcastTx(nodeAddr, hex.EncodeToString(rawtx))
if err != nil {
logger.Error(err.Error())
return nil, pp.MakeErrResWithCode(pp.ErrCode_BroadcastTxFail)
}
success = true
if skyTxRlt.ChangeAddr != "" {
logger.Debug("change address:%s", skyTxRlt.ChangeAddr)
ee.WatchAddress(ct, skyTxRlt.ChangeAddr)
}
resp := pp.WithdrawalRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
NewTxid: &newTxid,
}
return &resp, nil
}
// CreateRawTx create raw tx base on some utxos.
// mode: POST
// url: /api/v1/create_rawtx?coin_type=[:coin_type]
// request json:
// different in bitcoin and skycoin.
func CreateRawTx(se Servicer) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
var rlt *pp.EmptyRes
loop:
for {
// get coin type
cp := r.FormValue("coin_type")
// get request body
params := rawTxParams{}
if err := json.NewDecoder(r.Body).Decode(¶ms); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
coin, err := se.GetCoin(cp)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_ServerError)
break
}
var rawtx string
switch cp {
case bitcoin.Type:
outs := make([]bitcoin.TxOut, len(params.TxOuts))
for i, o := range params.TxOuts {
outs[i].Addr = o.Addr
outs[i].Value = o.Value
}
rawtx, err = coin.CreateRawTx(params.TxIns, outs)
case skycoin.Type:
outs := make([]skycoin.TxOut, len(params.TxOuts))
for i, o := range params.TxOuts {
addr, err := cipher.DecodeBase58Address(o.Addr)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break loop
}
outs[i].Address = addr
outs[i].Coins = o.Value
outs[i].Hours = o.Hours
}
rawtx, err = coin.CreateRawTx(params.TxIns, outs)
}
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrRes(err)
break
}
res := struct {
Result *pp.Result `json:"result"`
Rawtx string `json:"rawtx"`
}{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
Rawtx: rawtx,
}
sendJSON(w, &res)
return
}
sendJSON(w, rlt)
}
}
// CreateOrder create specifc order.
func CreateOrder(egn engine.Exchange) sknet.HandlerFunc {
return func(c *sknet.Context) error {
rlt := &pp.EmptyRes{}
req := &pp.OrderReq{}
for {
if err := c.BindJSON(req); err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
logger.Error(err.Error())
break
}
// validate pubkey
pubkey := req.GetPubkey()
if err := validatePubkey(pubkey); err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongPubkey)
break
}
// get order type
op, err := order.TypeFromStr(req.GetType())
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
logger.Error(err.Error())
break
}
// find the account
acnt, err := egn.GetAccount(pubkey)
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongPubkey)
logger.Error(err.Error())
break
}
cp, bal, err := needBalance(op, req)
if err != nil {
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
logger.Error(err.Error())
break
}
if acnt.GetBalance(cp) < bal {
err := fmt.Errorf("%s balance is not sufficient", cp)
rlt = pp.MakeErrRes(err)
logger.Debug(err.Error())
break
}
var success bool
if op == order.Bid {
defer func() {
if success {
egn.SaveAccount()
} else {
acnt.IncreaseBalance(cp, bal)
}
}()
// decrease the balance, in case of double use the coins.
logger.Info("account:%s decrease %s:%d", acnt.GetID(), cp, bal)
if err := acnt.DecreaseBalance(cp, bal); err != nil {
rlt = pp.MakeErrRes(err)
logger.Error(err.Error())
break
}
}
odr := order.New(pubkey, op, req.GetPrice(), req.GetAmount())
oid, err := egn.AddOrder(req.GetCoinPair(), *odr)
if err != nil {
logger.Error(err.Error())
rlt = pp.MakeErrResWithCode(pp.ErrCode_WrongRequest)
break
}
success = true
logger.Info(fmt.Sprintf("new %s order:%d", op, oid))
res := pp.OrderRes{
Result: pp.MakeResultWithCode(pp.ErrCode_Success),
OrderId: &oid,
}
return c.SendJSON(&res)
}
return c.Error(rlt)
}
}
