// jsonRPCRead is the main function that handles reading messages, getting
// the data the message requests, and writing the reply.
func jsonRPCRead(w http.ResponseWriter, r *http.Request, s *rpcServer) {
_ = spew.Dump
r.Close = true
if atomic.LoadInt32(&s.shutdown) != 0 {
return
}
var rawReply btcjson.Reply
body, err := btcjson.GetRaw(r.Body)
if err != nil {
log.Errorf("[RPCS] Error getting json message: %v", err)
return
}
var message btcjson.Message
err = json.Unmarshal(body, &message)
if err != nil {
log.Errorf("[RPCS] Error unmarshalling json message: %v", err)
jsonError := btcjson.Error{
Code: -32700,
Message: "Parse error",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: nil,
}
log.Tracef("[RPCS] reply: %v", rawReply)
msg, err := btcjson.MarshallAndSend(rawReply, w)
if err != nil {
log.Errorf(msg)
return
}
log.Debugf(msg)
return
}
log.Tracef("[RPCS] received: %v", message)
// Deal with commands
switch message.Method {
case "stop":
rawReply = btcjson.Reply{
Result: "btcd stopping.",
Error: nil,
Id: &message.Id,
}
s.server.Stop()
case "getblockcount":
_, maxidx, _ := s.server.db.NewestSha()
rawReply = btcjson.Reply{
Result: maxidx,
Error: nil,
Id: &message.Id,
}
// btcd does not do mining so we can hardcode replies here.
case "getgenerate":
rawReply = btcjson.Reply{
Result: false,
Error: nil,
Id: &message.Id,
}
case "setgenerate":
rawReply = btcjson.Reply{
Result: nil,
Error: nil,
Id: &message.Id,
}
case "gethashespersec":
rawReply = btcjson.Reply{
Result: 0,
Error: nil,
Id: &message.Id,
}
case "getblockhash":
var f interface{}
err = json.Unmarshal(body, &f)
m := f.(map[string]interface{})
var idx float64
for _, v := range m {
switch vv := v.(type) {
case []interface{}:
for _, u := range vv {
idx, _ = u.(float64)
}
default:
}
}
sha, err := s.server.db.FetchBlockShaByHeight(int64(idx))
if err != nil {
log.Errorf("[RCPS] Error getting block: %v", err)
jsonError := btcjson.Error{
Code: -1,
Message: "Block number out of range.",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
log.Tracef("[RPCS] reply: %v", rawReply)
break
}
rawReply = btcjson.Reply{
Result: sha.String(),
Error: nil,
Id: &message.Id,
}
case "getblock":
var f interface{}
err = json.Unmarshal(body, &f)
m := f.(map[string]interface{})
var hash string
for _, v := range m {
switch vv := v.(type) {
case []interface{}:
for _, u := range vv {
hash, _ = u.(string)
}
default:
}
}
sha, err := btcwire.NewShaHashFromStr(hash)
if err != nil {
log.Errorf("[RPCS] Error generating sha: %v", err)
jsonError := btcjson.Error{
Code: -5,
Message: "Block not found",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
log.Tracef("[RPCS] reply: %v", rawReply)
break
}
blk, err := s.server.db.FetchBlockBySha(sha)
if err != nil {
log.Errorf("[RPCS] Error fetching sha: %v", err)
jsonError := btcjson.Error{
Code: -5,
Message: "Block not found",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
log.Tracef("[RPCS] reply: %v", rawReply)
break
}
idx := blk.Height()
buf, err := blk.Bytes()
if err != nil {
log.Errorf("[RPCS] Error fetching block: %v", err)
jsonError := btcjson.Error{
Code: -5,
Message: "Block not found",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
log.Tracef("[RPCS] reply: %v", rawReply)
break
}
txList, _ := blk.TxShas()
txNames := make([]string, len(txList))
for i, v := range txList {
txNames[i] = v.String()
}
_, maxidx, err := s.server.db.NewestSha()
if err != nil {
log.Errorf("[RPCS] Cannot get newest sha: %v", err)
return
}
blockHeader := &blk.MsgBlock().Header
blockReply := btcjson.BlockResult{
Hash: hash,
Version: blockHeader.Version,
MerkleRoot: blockHeader.MerkleRoot.String(),
PreviousHash: blockHeader.PrevBlock.String(),
Nonce: blockHeader.Nonce,
Time: blockHeader.Timestamp.Unix(),
Confirmations: uint64(1 + maxidx - idx),
Height: idx,
Tx: txNames,
Size: len(buf),
Bits: strconv.FormatInt(int64(blockHeader.Bits), 16),
Difficulty: getDifficultyRatio(blockHeader.Bits),
}
// Get next block unless we are already at the top.
if idx < maxidx {
shaNext, err := s.server.db.FetchBlockShaByHeight(int64(idx + 1))
if err != nil {
log.Errorf("[RPCS] No next block: %v", err)
} else {
blockReply.NextHash = shaNext.String()
}
}
rawReply = btcjson.Reply{
Result: blockReply,
Error: nil,
Id: &message.Id,
}
case "getrawtransaction":
var f interface{}
err = json.Unmarshal(body, &f)
m := f.(map[string]interface{})
var tx string
var verbose float64
for _, v := range m {
switch vv := v.(type) {
case []interface{}:
for _, u := range vv {
switch uu := u.(type) {
case string:
tx = uu
case float64:
verbose = uu
default:
}
}
default:
}
}
if int(verbose) != 1 {
// Don't return details
// not used yet
} else {
txSha, _ := btcwire.NewShaHashFromStr(tx)
var txS *btcwire.MsgTx
txList, err := s.server.db.FetchTxBySha(txSha)
if err != nil {
log.Errorf("[RPCS] Error fetching tx: %v", err)
jsonError := btcjson.Error{
Code: -5,
Message: "No information available about transaction",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
log.Tracef("[RPCS] reply: %v", rawReply)
break
}
lastTx := len(txList) - 1
txS = txList[lastTx].Tx
blksha := txList[lastTx].BlkSha
blk, err := s.server.db.FetchBlockBySha(blksha)
if err != nil {
log.Errorf("[RPCS] Error fetching sha: %v", err)
jsonError := btcjson.Error{
Code: -5,
Message: "Block not found",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
log.Tracef("[RPCS] reply: %v", rawReply)
break
}
idx := blk.Height()
txOutList := txS.TxOut
voutList := make([]btcjson.Vout, len(txOutList))
txInList := txS.TxIn
vinList := make([]btcjson.Vin, len(txInList))
for i, v := range txInList {
vinList[i].Sequence = float64(v.Sequence)
disbuf, _ := btcscript.DisasmString(v.SignatureScript)
vinList[i].ScriptSig.Asm = strings.Replace(disbuf, " ", "", -1)
vinList[i].Vout = i + 1
log.Debugf(disbuf)
}
for i, v := range txOutList {
voutList[i].N = i
voutList[i].Value = float64(v.Value) / 100000000
isbuf, _ := btcscript.DisasmString(v.PkScript)
voutList[i].ScriptPubKey.Asm = isbuf
voutList[i].ScriptPubKey.ReqSig = strings.Count(isbuf, "OP_CHECKSIG")
_, addr, err := btcscript.ScriptToAddress(v.PkScript)
if err != nil {
log.Errorf("[RPCS] Error getting address for %v: %v", txSha, err)
} else {
addrList := make([]string, 1)
addrList[0] = addr
voutList[i].ScriptPubKey.Addresses = addrList
}
}
_, maxidx, err := s.server.db.NewestSha()
if err != nil {
log.Errorf("[RPCS] Cannot get newest sha: %v", err)
return
}
confirmations := uint64(1 + maxidx - idx)
blockHeader := &blk.MsgBlock().Header
txReply := btcjson.TxRawResult{
Txid: tx,
Vout: voutList,
Vin: vinList,
Version: txS.Version,
LockTime: txS.LockTime,
// This is not a typo, they are identical in
// bitcoind as well.
Time: blockHeader.Timestamp.Unix(),
Blocktime: blockHeader.Timestamp.Unix(),
BlockHash: blksha.String(),
Confirmations: confirmations,
}
rawReply = btcjson.Reply{
Result: txReply,
Error: nil,
Id: &message.Id,
}
}
case "decoderawtransaction":
var f interface{}
err = json.Unmarshal(body, &f)
m := f.(map[string]interface{})
var hash string
for _, v := range m {
switch vv := v.(type) {
case []interface{}:
for _, u := range vv {
hash, _ = u.(string)
}
default:
}
}
spew.Dump(hash)
txReply := btcjson.TxRawDecodeResult{}
rawReply = btcjson.Reply{
Result: txReply,
Error: nil,
Id: &message.Id,
}
default:
jsonError := btcjson.Error{
Code: -32601,
Message: "Method not found",
}
rawReply = btcjson.Reply{
Result: nil,
Error: &jsonError,
Id: &message.Id,
}
}
msg, err := btcjson.MarshallAndSend(rawReply, w)
if err != nil {
log.Errorf(msg)
return
}
log.Debugf(msg)
return
}
// handleGetBlock implements the getblock command.
func handleGetBlock(s *rpcServer, cmd btcjson.Cmd) (interface{}, error) {
c := cmd.(*btcjson.GetBlockCmd)
sha, err := btcwire.NewShaHashFromStr(c.Hash)
if err != nil {
rpcsLog.Errorf("Error generating sha: %v", err)
return nil, btcjson.ErrBlockNotFound
}
blk, err := s.server.db.FetchBlockBySha(sha)
if err != nil {
rpcsLog.Errorf("Error fetching sha: %v", err)
return nil, btcjson.ErrBlockNotFound
}
// When the verbose flag isn't set, simply return the network-serialized
// block as a hex-encoded string.
if !c.Verbose {
blkHex, err := messageToHex(blk.MsgBlock())
if err != nil {
return nil, err
}
return blkHex, nil
}
// The verbose flag is set, so generate the JSON object and return it.
buf, err := blk.Bytes()
if err != nil {
rpcsLog.Errorf("Error fetching block: %v", err)
return nil, btcjson.Error{
Code: btcjson.ErrInternal.Code,
Message: err.Error(),
}
}
idx := blk.Height()
_, maxidx, err := s.server.db.NewestSha()
if err != nil {
rpcsLog.Errorf("Cannot get newest sha: %v", err)
return nil, btcjson.ErrBlockNotFound
}
blockHeader := &blk.MsgBlock().Header
blockReply := btcjson.BlockResult{
Hash: c.Hash,
Version: blockHeader.Version,
MerkleRoot: blockHeader.MerkleRoot.String(),
PreviousHash: blockHeader.PrevBlock.String(),
Nonce: blockHeader.Nonce,
Time: blockHeader.Timestamp.Unix(),
Confirmations: uint64(1 + maxidx - idx),
Height: idx,
Size: len(buf),
Bits: strconv.FormatInt(int64(blockHeader.Bits), 16),
Difficulty: getDifficultyRatio(blockHeader.Bits),
}
if !c.VerboseTx {
txList, _ := blk.TxShas()
txNames := make([]string, len(txList))
for i, v := range txList {
txNames[i] = v.String()
}
blockReply.Tx = txNames
} else {
txns := blk.Transactions()
rawTxns := make([]btcjson.TxRawResult, len(txns))
for i, tx := range txns {
txSha := tx.Sha().String()
mtx := tx.MsgTx()
rawTxn, err := createTxRawResult(s.server.btcnet, txSha,
mtx, blk, maxidx, sha)
if err != nil {
rpcsLog.Errorf("Cannot create TxRawResult for "+
"transaction %s: %v", txSha, err)
return nil, err
}
rawTxns[i] = *rawTxn
}
blockReply.RawTx = rawTxns
}
// Get next block unless we are already at the top.
if idx < maxidx {
var shaNext *btcwire.ShaHash
shaNext, err = s.server.db.FetchBlockShaByHeight(int64(idx + 1))
if err != nil {
rpcsLog.Errorf("No next block: %v", err)
return nil, btcjson.ErrBlockNotFound
}
blockReply.NextHash = shaNext.String()
}
return blockReply, nil
}
// handleGetBlock implements the getblock command.
func handleGetBlock(s *rpcServer, cmd btcjson.Cmd, walletNotification chan []byte) (interface{}, error) {
c := cmd.(*btcjson.GetBlockCmd)
sha, err := btcwire.NewShaHashFromStr(c.Hash)
if err != nil {
log.Errorf("RPCS: Error generating sha: %v", err)
return nil, btcjson.ErrBlockNotFound
}
blk, err := s.server.db.FetchBlockBySha(sha)
if err != nil {
log.Errorf("RPCS: Error fetching sha: %v", err)
return nil, btcjson.ErrBlockNotFound
}
idx := blk.Height()
buf, err := blk.Bytes()
if err != nil {
log.Errorf("RPCS: Error fetching block: %v", err)
return nil, btcjson.ErrBlockNotFound
}
txList, _ := blk.TxShas()
txNames := make([]string, len(txList))
for i, v := range txList {
txNames[i] = v.String()
}
_, maxidx, err := s.server.db.NewestSha()
if err != nil {
log.Errorf("RPCS: Cannot get newest sha: %v", err)
return nil, btcjson.ErrBlockNotFound
}
blockHeader := &blk.MsgBlock().Header
blockReply := btcjson.BlockResult{
Hash: c.Hash,
Version: blockHeader.Version,
MerkleRoot: blockHeader.MerkleRoot.String(),
PreviousHash: blockHeader.PrevBlock.String(),
Nonce: blockHeader.Nonce,
Time: blockHeader.Timestamp.Unix(),
Confirmations: uint64(1 + maxidx - idx),
Height: idx,
Tx: txNames,
Size: len(buf),
Bits: strconv.FormatInt(int64(blockHeader.Bits), 16),
Difficulty: getDifficultyRatio(blockHeader.Bits),
}
// Get next block unless we are already at the top.
if idx < maxidx {
var shaNext *btcwire.ShaHash
shaNext, err = s.server.db.FetchBlockShaByHeight(int64(idx + 1))
if err != nil {
log.Errorf("RPCS: No next block: %v", err)
return nil, btcjson.ErrBlockNotFound
}
blockReply.NextHash = shaNext.String()
}
return blockReply, nil
}
