// TestTxSerializeSize performs tests to ensure the serialize size for various
// transactions is accurate.
func TestTxSerializeSize(t *testing.T) {
// Empty tx message.
noTx := wire.NewMsgTx()
noTx.Version = 1
tests := []struct {
in *wire.MsgTx // Tx to encode
size int // Expected serialized size
}{
// No inputs or outpus.
{noTx, 10},
// Transcaction with an input and an output.
{multiTx, 210},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
serializedSize := test.in.SerializeSize()
if serializedSize != test.size {
t.Errorf("MsgTx.SerializeSize: #%d got: %d, want: %d", i,
serializedSize, test.size)
continue
}
}
}
// NewMsgTxWithInputCoins takes the coins in the CoinSet and makes them
// the inputs to a new wire.MsgTx which is returned.
func NewMsgTxWithInputCoins(inputCoins Coins) *wire.MsgTx {
msgTx := wire.NewMsgTx()
coins := inputCoins.Coins()
msgTx.TxIn = make([]*wire.TxIn, len(coins))
for i, coin := range coins {
msgTx.TxIn[i] = &wire.TxIn{
PreviousOutPoint: wire.OutPoint{
Hash: *coin.Hash(),
Index: coin.Index(),
},
SignatureScript: nil,
Sequence: wire.MaxTxInSequenceNum,
}
}
return msgTx
}
// TestTxSha tests the ability to generate the hash of a transaction accurately.
func TestTxSha(t *testing.T) {
// Hash of first transaction from block 113875.
hashStr := "f051e59b5e2503ac626d03aaeac8ab7be2d72ba4b7e97119c5852d70d52dcb86"
wantHash, err := wire.NewShaHashFromStr(hashStr)
if err != nil {
t.Errorf("NewShaHashFromStr: %v", err)
return
}
// First transaction from block 113875.
msgTx := wire.NewMsgTx()
txIn := wire.TxIn{
PreviousOutPoint: wire.OutPoint{
Hash: wire.ShaHash{},
Index: 0xffffffff,
},
SignatureScript: []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62},
Sequence: 0xffffffff,
}
txOut := wire.TxOut{
Value: 5000000000,
PkScript: []byte{
0x41, // OP_DATA_65
0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
0xa6, // 65-byte signature
0xac, // OP_CHECKSIG
},
}
msgTx.AddTxIn(&txIn)
msgTx.AddTxOut(&txOut)
msgTx.LockTime = 0
// Ensure the hash produced is expected.
txHash := msgTx.TxSha()
if !txHash.IsEqual(wantHash) {
t.Errorf("TxSha: wrong hash - got %v, want %v",
spew.Sprint(txHash), spew.Sprint(wantHash))
}
}
// createCoinbaseTx returns a coinbase transaction paying an appropriate subsidy
// based on the passed block height to the provided address. When the address
// is nil, the coinbase transaction will instead be redeemable by anyone.
//
// See the comment for NewBlockTemplate for more information about why the nil
// address handling is useful.
func createCoinbaseTx(coinbaseScript []byte, nextBlockHeight int32, addr btcutil.Address) (*btcutil.Tx, error) {
// Create the script to pay to the provided payment address if one was
// specified. Otherwise create a script that allows the coinbase to be
// redeemable by anyone.
var pkScript []byte
if addr != nil {
var err error
pkScript, err = txscript.PayToAddrScript(addr)
if err != nil {
return nil, err
}
} else {
var err error
scriptBuilder := txscript.NewScriptBuilder()
pkScript, err = scriptBuilder.AddOp(txscript.OP_TRUE).Script()
if err != nil {
return nil, err
}
}
tx := wire.NewMsgTx()
tx.AddTxIn(&wire.TxIn{
// Coinbase transactions have no inputs, so previous outpoint is
// zero hash and max index.
PreviousOutPoint: *wire.NewOutPoint(&wire.ShaHash{},
wire.MaxPrevOutIndex),
SignatureScript: coinbaseScript,
Sequence: wire.MaxTxInSequenceNum,
})
tx.AddTxOut(&wire.TxOut{
Value: blockchain.CalcBlockSubsidy(nextBlockHeight,
activeNetParams.Params),
PkScript: pkScript,
})
return btcutil.NewTx(tx), nil
}
// TestMessage tests the Read/WriteMessage and Read/WriteMessageN API.
func TestMessage(t *testing.T) {
pver := wire.ProtocolVersion
// Create the various types of messages to test.
// MsgVersion.
addrYou := &net.TCPAddr{IP: net.ParseIP("192.168.0.1"), Port: 8333}
you, err := wire.NewNetAddress(addrYou, wire.SFNodeNetwork)
if err != nil {
t.Errorf("NewNetAddress: %v", err)
}
you.Timestamp = time.Time{} // Version message has zero value timestamp.
addrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8333}
me, err := wire.NewNetAddress(addrMe, wire.SFNodeNetwork)
if err != nil {
t.Errorf("NewNetAddress: %v", err)
}
me.Timestamp = time.Time{} // Version message has zero value timestamp.
msgVersion := wire.NewMsgVersion(me, you, 123123, 0)
msgVerack := wire.NewMsgVerAck()
msgGetAddr := wire.NewMsgGetAddr()
msgAddr := wire.NewMsgAddr()
msgGetBlocks := wire.NewMsgGetBlocks(&wire.ShaHash{})
msgBlock := &blockOne
msgInv := wire.NewMsgInv()
msgGetData := wire.NewMsgGetData()
msgNotFound := wire.NewMsgNotFound()
msgTx := wire.NewMsgTx()
msgPing := wire.NewMsgPing(123123)
msgPong := wire.NewMsgPong(123123)
msgGetHeaders := wire.NewMsgGetHeaders()
msgHeaders := wire.NewMsgHeaders()
msgAlert := wire.NewMsgAlert([]byte("payload"), []byte("signature"))
msgMemPool := wire.NewMsgMemPool()
msgFilterAdd := wire.NewMsgFilterAdd([]byte{0x01})
msgFilterClear := wire.NewMsgFilterClear()
msgFilterLoad := wire.NewMsgFilterLoad([]byte{0x01}, 10, 0, wire.BloomUpdateNone)
bh := wire.NewBlockHeader(&wire.ShaHash{}, &wire.ShaHash{}, 0, 0)
msgMerkleBlock := wire.NewMsgMerkleBlock(bh)
msgReject := wire.NewMsgReject("block", wire.RejectDuplicate, "duplicate block")
tests := []struct {
in wire.Message // Value to encode
out wire.Message // Expected decoded value
pver uint32 // Protocol version for wire encoding
btcnet wire.BitcoinNet // Network to use for wire encoding
bytes int // Expected num bytes read/written
}{
{msgVersion, msgVersion, pver, wire.MainNet, 125},
{msgVerack, msgVerack, pver, wire.MainNet, 24},
{msgGetAddr, msgGetAddr, pver, wire.MainNet, 24},
{msgAddr, msgAddr, pver, wire.MainNet, 25},
{msgGetBlocks, msgGetBlocks, pver, wire.MainNet, 61},
{msgBlock, msgBlock, pver, wire.MainNet, 239},
{msgInv, msgInv, pver, wire.MainNet, 25},
{msgGetData, msgGetData, pver, wire.MainNet, 25},
{msgNotFound, msgNotFound, pver, wire.MainNet, 25},
{msgTx, msgTx, pver, wire.MainNet, 34},
{msgPing, msgPing, pver, wire.MainNet, 32},
{msgPong, msgPong, pver, wire.MainNet, 32},
{msgGetHeaders, msgGetHeaders, pver, wire.MainNet, 61},
{msgHeaders, msgHeaders, pver, wire.MainNet, 25},
{msgAlert, msgAlert, pver, wire.MainNet, 42},
{msgMemPool, msgMemPool, pver, wire.MainNet, 24},
{msgFilterAdd, msgFilterAdd, pver, wire.MainNet, 26},
{msgFilterClear, msgFilterClear, pver, wire.MainNet, 24},
{msgFilterLoad, msgFilterLoad, pver, wire.MainNet, 35},
{msgMerkleBlock, msgMerkleBlock, pver, wire.MainNet, 110},
{msgReject, msgReject, pver, wire.MainNet, 79},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode to wire format.
var buf bytes.Buffer
nw, err := wire.WriteMessageN(&buf, test.in, test.pver, test.btcnet)
if err != nil {
t.Errorf("WriteMessage #%d error %v", i, err)
continue
}
// Ensure the number of bytes written match the expected value.
if nw != test.bytes {
t.Errorf("WriteMessage #%d unexpected num bytes "+
"written - got %d, want %d", i, nw, test.bytes)
}
// Decode from wire format.
rbuf := bytes.NewReader(buf.Bytes())
nr, msg, _, err := wire.ReadMessageN(rbuf, test.pver, test.btcnet)
if err != nil {
t.Errorf("ReadMessage #%d error %v, msg %v", i, err,
spew.Sdump(msg))
continue
}
if !reflect.DeepEqual(msg, test.out) {
t.Errorf("ReadMessage #%d\n got: %v want: %v", i,
spew.Sdump(msg), spew.Sdump(test.out))
continue
}
// Ensure the number of bytes read match the expected value.
if nr != test.bytes {
t.Errorf("ReadMessage #%d unexpected num bytes read - "+
"got %d, want %d", i, nr, test.bytes)
}
}
// Do the same thing for Read/WriteMessage, but ignore the bytes since
// they don't return them.
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode to wire format.
var buf bytes.Buffer
err := wire.WriteMessage(&buf, test.in, test.pver, test.btcnet)
if err != nil {
t.Errorf("WriteMessage #%d error %v", i, err)
continue
}
// Decode from wire format.
rbuf := bytes.NewReader(buf.Bytes())
msg, _, err := wire.ReadMessage(rbuf, test.pver, test.btcnet)
if err != nil {
t.Errorf("ReadMessage #%d error %v, msg %v", i, err,
spew.Sdump(msg))
continue
}
if !reflect.DeepEqual(msg, test.out) {
t.Errorf("ReadMessage #%d\n got: %v want: %v", i,
spew.Sdump(msg), spew.Sdump(test.out))
continue
}
}
}
// TestTxSerialize tests MsgTx serialize and deserialize.
func TestTxSerialize(t *testing.T) {
noTx := wire.NewMsgTx()
noTx.Version = 1
noTxEncoded := []byte{
0x01, 0x00, 0x00, 0x00, // Version
0x00, // Varint for number of input transactions
0x00, // Varint for number of output transactions
0x00, 0x00, 0x00, 0x00, // Lock time
}
tests := []struct {
in *wire.MsgTx // Message to encode
out *wire.MsgTx // Expected decoded message
buf []byte // Serialized data
pkScriptLocs []int // Expected output script locations
}{
// No transactions.
{
noTx,
noTx,
noTxEncoded,
nil,
},
// Multiple transactions.
{
multiTx,
multiTx,
multiTxEncoded,
multiTxPkScriptLocs,
},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Serialize the transaction.
var buf bytes.Buffer
err := test.in.Serialize(&buf)
if err != nil {
t.Errorf("Serialize #%d error %v", i, err)
continue
}
if !bytes.Equal(buf.Bytes(), test.buf) {
t.Errorf("Serialize #%d\n got: %s want: %s", i,
spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
continue
}
// Deserialize the transaction.
var tx wire.MsgTx
rbuf := bytes.NewReader(test.buf)
err = tx.Deserialize(rbuf)
if err != nil {
t.Errorf("Deserialize #%d error %v", i, err)
continue
}
if !reflect.DeepEqual(&tx, test.out) {
t.Errorf("Deserialize #%d\n got: %s want: %s", i,
spew.Sdump(&tx), spew.Sdump(test.out))
continue
}
// Ensure the public key script locations are accurate.
pkScriptLocs := test.in.PkScriptLocs()
if !reflect.DeepEqual(pkScriptLocs, test.pkScriptLocs) {
t.Errorf("PkScriptLocs #%d\n got: %s want: %s", i,
spew.Sdump(pkScriptLocs),
spew.Sdump(test.pkScriptLocs))
continue
}
for j, loc := range pkScriptLocs {
wantPkScript := test.in.TxOut[j].PkScript
gotPkScript := test.buf[loc : loc+len(wantPkScript)]
if !bytes.Equal(gotPkScript, wantPkScript) {
t.Errorf("PkScriptLocs #%d:%d\n unexpected "+
"script got: %s want: %s", i, j,
spew.Sdump(gotPkScript),
spew.Sdump(wantPkScript))
}
}
}
}
// TestTxWire tests the MsgTx wire encode and decode for various numbers
// of transaction inputs and outputs and protocol versions.
func TestTxWire(t *testing.T) {
// Empty tx message.
noTx := wire.NewMsgTx()
noTx.Version = 1
noTxEncoded := []byte{
0x01, 0x00, 0x00, 0x00, // Version
0x00, // Varint for number of input transactions
0x00, // Varint for number of output transactions
0x00, 0x00, 0x00, 0x00, // Lock time
}
tests := []struct {
in *wire.MsgTx // Message to encode
out *wire.MsgTx // Expected decoded message
buf []byte // Wire encoding
pver uint32 // Protocol version for wire encoding
}{
// Latest protocol version with no transactions.
{
noTx,
noTx,
noTxEncoded,
wire.ProtocolVersion,
},
// Latest protocol version with multiple transactions.
{
multiTx,
multiTx,
multiTxEncoded,
wire.ProtocolVersion,
},
// Protocol version BIP0035Version with no transactions.
{
noTx,
noTx,
noTxEncoded,
wire.BIP0035Version,
},
// Protocol version BIP0035Version with multiple transactions.
{
multiTx,
multiTx,
multiTxEncoded,
wire.BIP0035Version,
},
// Protocol version BIP0031Version with no transactions.
{
noTx,
noTx,
noTxEncoded,
wire.BIP0031Version,
},
// Protocol version BIP0031Version with multiple transactions.
{
multiTx,
multiTx,
multiTxEncoded,
wire.BIP0031Version,
},
// Protocol version NetAddressTimeVersion with no transactions.
{
noTx,
noTx,
noTxEncoded,
wire.NetAddressTimeVersion,
},
// Protocol version NetAddressTimeVersion with multiple transactions.
{
multiTx,
multiTx,
multiTxEncoded,
wire.NetAddressTimeVersion,
},
// Protocol version MultipleAddressVersion with no transactions.
{
noTx,
noTx,
noTxEncoded,
wire.MultipleAddressVersion,
},
// Protocol version MultipleAddressVersion with multiple transactions.
{
multiTx,
multiTx,
multiTxEncoded,
wire.MultipleAddressVersion,
},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
// Encode the message to wire format.
var buf bytes.Buffer
err := test.in.BtcEncode(&buf, test.pver)
if err != nil {
t.Errorf("BtcEncode #%d error %v", i, err)
continue
}
if !bytes.Equal(buf.Bytes(), test.buf) {
t.Errorf("BtcEncode #%d\n got: %s want: %s", i,
spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
continue
}
// Decode the message from wire format.
var msg wire.MsgTx
rbuf := bytes.NewReader(test.buf)
err = msg.BtcDecode(rbuf, test.pver)
if err != nil {
t.Errorf("BtcDecode #%d error %v", i, err)
continue
}
if !reflect.DeepEqual(&msg, test.out) {
t.Errorf("BtcDecode #%d\n got: %s want: %s", i,
spew.Sdump(&msg), spew.Sdump(test.out))
continue
}
}
}
// TestTx tests the MsgTx API.
func TestTx(t *testing.T) {
pver := wire.ProtocolVersion
// Block 100000 hash.
hashStr := "3ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506"
hash, err := wire.NewShaHashFromStr(hashStr)
if err != nil {
t.Errorf("NewShaHashFromStr: %v", err)
}
// Ensure the command is expected value.
wantCmd := "tx"
msg := wire.NewMsgTx()
if cmd := msg.Command(); cmd != wantCmd {
t.Errorf("NewMsgAddr: wrong command - got %v want %v",
cmd, wantCmd)
}
// Ensure max payload is expected value for latest protocol version.
// Num addresses (varInt) + max allowed addresses.
wantPayload := uint32(1000 * 1000)
maxPayload := msg.MaxPayloadLength(pver)
if maxPayload != wantPayload {
t.Errorf("MaxPayloadLength: wrong max payload length for "+
"protocol version %d - got %v, want %v", pver,
maxPayload, wantPayload)
}
// Ensure we get the same transaction output point data back out.
// NOTE: This is a block hash and made up index, but we're only
// testing package functionality.
prevOutIndex := uint32(1)
prevOut := wire.NewOutPoint(hash, prevOutIndex)
if !prevOut.Hash.IsEqual(hash) {
t.Errorf("NewOutPoint: wrong hash - got %v, want %v",
spew.Sprint(&prevOut.Hash), spew.Sprint(hash))
}
if prevOut.Index != prevOutIndex {
t.Errorf("NewOutPoint: wrong index - got %v, want %v",
prevOut.Index, prevOutIndex)
}
prevOutStr := fmt.Sprintf("%s:%d", hash.String(), prevOutIndex)
if s := prevOut.String(); s != prevOutStr {
t.Errorf("OutPoint.String: unexpected result - got %v, "+
"want %v", s, prevOutStr)
}
// Ensure we get the same transaction input back out.
sigScript := []byte{0x04, 0x31, 0xdc, 0x00, 0x1b, 0x01, 0x62}
txIn := wire.NewTxIn(prevOut, sigScript)
if !reflect.DeepEqual(&txIn.PreviousOutPoint, prevOut) {
t.Errorf("NewTxIn: wrong prev outpoint - got %v, want %v",
spew.Sprint(&txIn.PreviousOutPoint),
spew.Sprint(prevOut))
}
if !bytes.Equal(txIn.SignatureScript, sigScript) {
t.Errorf("NewTxIn: wrong signature script - got %v, want %v",
spew.Sdump(txIn.SignatureScript),
spew.Sdump(sigScript))
}
// Ensure we get the same transaction output back out.
txValue := int64(5000000000)
pkScript := []byte{
0x41, // OP_DATA_65
0x04, 0xd6, 0x4b, 0xdf, 0xd0, 0x9e, 0xb1, 0xc5,
0xfe, 0x29, 0x5a, 0xbd, 0xeb, 0x1d, 0xca, 0x42,
0x81, 0xbe, 0x98, 0x8e, 0x2d, 0xa0, 0xb6, 0xc1,
0xc6, 0xa5, 0x9d, 0xc2, 0x26, 0xc2, 0x86, 0x24,
0xe1, 0x81, 0x75, 0xe8, 0x51, 0xc9, 0x6b, 0x97,
0x3d, 0x81, 0xb0, 0x1c, 0xc3, 0x1f, 0x04, 0x78,
0x34, 0xbc, 0x06, 0xd6, 0xd6, 0xed, 0xf6, 0x20,
0xd1, 0x84, 0x24, 0x1a, 0x6a, 0xed, 0x8b, 0x63,
0xa6, // 65-byte signature
0xac, // OP_CHECKSIG
}
txOut := wire.NewTxOut(txValue, pkScript)
if txOut.Value != txValue {
t.Errorf("NewTxOut: wrong pk script - got %v, want %v",
txOut.Value, txValue)
}
if !bytes.Equal(txOut.PkScript, pkScript) {
t.Errorf("NewTxOut: wrong pk script - got %v, want %v",
spew.Sdump(txOut.PkScript),
spew.Sdump(pkScript))
}
// Ensure transaction inputs are added properly.
msg.AddTxIn(txIn)
if !reflect.DeepEqual(msg.TxIn[0], txIn) {
t.Errorf("AddTxIn: wrong transaction input added - got %v, want %v",
spew.Sprint(msg.TxIn[0]), spew.Sprint(txIn))
}
// Ensure transaction outputs are added properly.
msg.AddTxOut(txOut)
if !reflect.DeepEqual(msg.TxOut[0], txOut) {
t.Errorf("AddTxIn: wrong transaction output added - got %v, want %v",
spew.Sprint(msg.TxOut[0]), spew.Sprint(txOut))
}
// Ensure the copy produced an identical transaction message.
newMsg := msg.Copy()
if !reflect.DeepEqual(newMsg, msg) {
t.Errorf("Copy: mismatched tx messages - got %v, want %v",
spew.Sdump(newMsg), spew.Sdump(msg))
}
return
}
func TestLimitAndSkipFetchTxsForAddr(t *testing.T) {
testDb, err := setUpTestDb(t, "tstdbtxaddr")
if err != nil {
t.Errorf("Failed to open test database %v", err)
return
}
defer testDb.cleanUpFunc()
// Insert a block with some fake test transactions. The block will have
// 10 copies of a fake transaction involving same address.
addrString := "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa"
targetAddr, err := btcutil.DecodeAddress(addrString, &chaincfg.MainNetParams)
if err != nil {
t.Fatalf("Unable to decode test address: %v", err)
}
outputScript, err := txscript.PayToAddrScript(targetAddr)
if err != nil {
t.Fatalf("Unable make test pkScript %v", err)
}
fakeTxOut := wire.NewTxOut(10, outputScript)
var emptyHash wire.ShaHash
fakeHeader := wire.NewBlockHeader(&emptyHash, &emptyHash, 1, 1)
msgBlock := wire.NewMsgBlock(fakeHeader)
for i := 0; i < 10; i++ {
mtx := wire.NewMsgTx()
mtx.AddTxOut(fakeTxOut)
msgBlock.AddTransaction(mtx)
}
// Insert the test block into the DB.
testBlock := btcutil.NewBlock(msgBlock)
newheight, err := testDb.db.InsertBlock(testBlock)
if err != nil {
t.Fatalf("Unable to insert block into db: %v", err)
}
// Create and insert an address index for out test addr.
txLoc, _ := testBlock.TxLoc()
index := make(database.BlockAddrIndex)
for i := range testBlock.Transactions() {
var hash160 [ripemd160.Size]byte
scriptAddr := targetAddr.ScriptAddress()
copy(hash160[:], scriptAddr[:])
index[hash160] = append(index[hash160], &txLoc[i])
}
blkSha := testBlock.Sha()
err = testDb.db.UpdateAddrIndexForBlock(blkSha, newheight, index)
if err != nil {
t.Fatalf("UpdateAddrIndexForBlock: failed to index"+
" addrs for block #%d (%s) "+
"err %v", newheight, blkSha, err)
return
}
// Try skipping the first 4 results, should get 6 in return.
txReply, err := testDb.db.FetchTxsForAddr(targetAddr, 4, 100000)
if err != nil {
t.Fatalf("Unable to fetch transactions for address: %v", err)
}
if len(txReply) != 6 {
t.Fatalf("Did not correctly skip forward in txs for address reply"+
" got %v txs, expected %v", len(txReply), 6)
}
// Limit the number of results to 3.
txReply, err = testDb.db.FetchTxsForAddr(targetAddr, 0, 3)
if err != nil {
t.Fatalf("Unable to fetch transactions for address: %v", err)
}
if len(txReply) != 3 {
t.Fatalf("Did not correctly limit in txs for address reply"+
" got %v txs, expected %v", len(txReply), 3)
}
// Skip 1, limit 5.
txReply, err = testDb.db.FetchTxsForAddr(targetAddr, 1, 5)
if err != nil {
t.Fatalf("Unable to fetch transactions for address: %v", err)
}
if len(txReply) != 5 {
t.Fatalf("Did not correctly limit in txs for address reply"+
" got %v txs, expected %v", len(txReply), 5)
}
}
// Test the sigscript generation for valid and invalid inputs, all
// hashTypes, and with and without compression. This test creates
// sigscripts to spend fake coinbase inputs, as sigscripts cannot be
// created for the MsgTxs in txTests, since they come from the blockchain
// and we don't have the private keys.
func TestSignatureScript(t *testing.T) {
t.Parallel()
privKey, _ := btcec.PrivKeyFromBytes(btcec.S256(), privKeyD)
nexttest:
for i := range sigScriptTests {
tx := wire.NewMsgTx()
output := wire.NewTxOut(500, []byte{txscript.OP_RETURN})
tx.AddTxOut(output)
for _ = range sigScriptTests[i].inputs {
txin := wire.NewTxIn(coinbaseOutPoint, nil)
tx.AddTxIn(txin)
}
var script []byte
var err error
for j := range tx.TxIn {
var idx int
if sigScriptTests[i].inputs[j].indexOutOfRange {
t.Errorf("at test %v", sigScriptTests[i].name)
idx = len(sigScriptTests[i].inputs)
} else {
idx = j
}
script, err = txscript.SignatureScript(tx, idx,
sigScriptTests[i].inputs[j].txout.PkScript,
sigScriptTests[i].hashType, privKey,
sigScriptTests[i].compress)
if (err == nil) != sigScriptTests[i].inputs[j].sigscriptGenerates {
if err == nil {
t.Errorf("passed test '%v' incorrectly",
sigScriptTests[i].name)
} else {
t.Errorf("failed test '%v': %v",
sigScriptTests[i].name, err)
}
continue nexttest
}
if !sigScriptTests[i].inputs[j].sigscriptGenerates {
// done with this test
continue nexttest
}
tx.TxIn[j].SignatureScript = script
}
// If testing using a correct sigscript but for an incorrect
// index, use last input script for first input. Requires > 0
// inputs for test.
if sigScriptTests[i].scriptAtWrongIndex {
tx.TxIn[0].SignatureScript = script
sigScriptTests[i].inputs[0].inputValidates = false
}
// Validate tx input scripts
scriptFlags := txscript.ScriptBip16 | txscript.ScriptVerifyDERSignatures
for j := range tx.TxIn {
vm, err := txscript.NewEngine(sigScriptTests[i].
inputs[j].txout.PkScript, tx, j, scriptFlags)
if err != nil {
t.Errorf("cannot create script vm for test %v: %v",
sigScriptTests[i].name, err)
continue nexttest
}
err = vm.Execute()
if (err == nil) != sigScriptTests[i].inputs[j].inputValidates {
if err == nil {
t.Errorf("passed test '%v' validation incorrectly: %v",
sigScriptTests[i].name, err)
} else {
t.Errorf("failed test '%v' validation: %v",
sigScriptTests[i].name, err)
}
continue nexttest
}
}
}
}
// This example demonstrates manually creating and signing a redeem transaction.
func ExampleSignTxOutput() {
// Ordinarily the private key would come from whatever storage mechanism
// is being used, but for this example just hard code it.
privKeyBytes, err := hex.DecodeString("22a47fa09a223f2aa079edf85a7c2" +
"d4f8720ee63e502ee2869afab7de234b80c")
if err != nil {
fmt.Println(err)
return
}
privKey, pubKey := btcec.PrivKeyFromBytes(btcec.S256(), privKeyBytes)
pubKeyHash := btcutil.Hash160(pubKey.SerializeCompressed())
addr, err := btcutil.NewAddressPubKeyHash(pubKeyHash,
&chaincfg.MainNetParams)
if err != nil {
fmt.Println(err)
return
}
// For this example, create a fake transaction that represents what
// would ordinarily be the real transaction that is being spent. It
// contains a single output that pays to address in the amount of 1 BTC.
originTx := wire.NewMsgTx()
prevOut := wire.NewOutPoint(&wire.ShaHash{}, ^uint32(0))
txIn := wire.NewTxIn(prevOut, []byte{txscript.OP_0, txscript.OP_0})
originTx.AddTxIn(txIn)
pkScript, err := txscript.PayToAddrScript(addr)
if err != nil {
fmt.Println(err)
return
}
txOut := wire.NewTxOut(100000000, pkScript)
originTx.AddTxOut(txOut)
originTxHash := originTx.TxSha()
// Create the transaction to redeem the fake transaction.
redeemTx := wire.NewMsgTx()
// Add the input(s) the redeeming transaction will spend. There is no
// signature script at this point since it hasn't been created or signed
// yet, hence nil is provided for it.
prevOut = wire.NewOutPoint(&originTxHash, 0)
txIn = wire.NewTxIn(prevOut, nil)
redeemTx.AddTxIn(txIn)
// Ordinarily this would contain that actual destination of the funds,
// but for this example don't bother.
txOut = wire.NewTxOut(0, nil)
redeemTx.AddTxOut(txOut)
// Sign the redeeming transaction.
lookupKey := func(a btcutil.Address) (*btcec.PrivateKey, bool, error) {
// Ordinarily this function would involve looking up the private
// key for the provided address, but since the only thing being
// signed in this example uses the address associated with the
// private key from above, simply return it with the compressed
// flag set since the address is using the associated compressed
// public key.
//
// NOTE: If you want to prove the code is actually signing the
// transaction properly, uncomment the following line which
// intentionally returns an invalid key to sign with, which in
// turn will result in a failure during the script execution
// when verifying the signature.
//
// privKey.D.SetInt64(12345)
//
return privKey, true, nil
}
// Notice that the script database parameter is nil here since it isn't
// used. It must be specified when pay-to-script-hash transactions are
// being signed.
sigScript, err := txscript.SignTxOutput(&chaincfg.MainNetParams,
redeemTx, 0, originTx.TxOut[0].PkScript, txscript.SigHashAll,
txscript.KeyClosure(lookupKey), nil, nil)
if err != nil {
fmt.Println(err)
return
}
redeemTx.TxIn[0].SignatureScript = sigScript
// Prove that the transaction has been validly signed by executing the
// script pair.
flags := txscript.ScriptBip16 | txscript.ScriptVerifyDERSignatures |
txscript.ScriptStrictMultiSig |
txscript.ScriptDiscourageUpgradableNops
vm, err := txscript.NewEngine(originTx.TxOut[0].PkScript, redeemTx, 0,
flags)
if err != nil {
fmt.Println(err)
return
}
if err := vm.Execute(); err != nil {
fmt.Println(err)
return
}
fmt.Println("Transaction successfully signed")
// Output:
// Transaction successfully signed
}
// TestCheckSerializedHeight tests the checkSerializedHeight function with
// various serialized heights and also does negative tests to ensure errors
// and handled properly.
func TestCheckSerializedHeight(t *testing.T) {
// Create an empty coinbase template to be used in the tests below.
coinbaseOutpoint := wire.NewOutPoint(&wire.ShaHash{}, math.MaxUint32)
coinbaseTx := wire.NewMsgTx()
coinbaseTx.Version = 2
coinbaseTx.AddTxIn(wire.NewTxIn(coinbaseOutpoint, nil))
// Expected rule errors.
missingHeightError := blockchain.RuleError{
ErrorCode: blockchain.ErrMissingCoinbaseHeight,
}
badHeightError := blockchain.RuleError{
ErrorCode: blockchain.ErrBadCoinbaseHeight,
}
tests := []struct {
sigScript []byte // Serialized data
wantHeight int32 // Expected height
err error // Expected error type
}{
// No serialized height length.
{[]byte{}, 0, missingHeightError},
// Serialized height length with no height bytes.
{[]byte{0x02}, 0, missingHeightError},
// Serialized height length with too few height bytes.
{[]byte{0x02, 0x4a}, 0, missingHeightError},
// Serialized height that needs 2 bytes to encode.
{[]byte{0x02, 0x4a, 0x52}, 21066, nil},
// Serialized height that needs 2 bytes to encode, but backwards
// endianness.
{[]byte{0x02, 0x4a, 0x52}, 19026, badHeightError},
// Serialized height that needs 3 bytes to encode.
{[]byte{0x03, 0x40, 0x0d, 0x03}, 200000, nil},
// Serialized height that needs 3 bytes to encode, but backwards
// endianness.
{[]byte{0x03, 0x40, 0x0d, 0x03}, 1074594560, badHeightError},
}
t.Logf("Running %d tests", len(tests))
for i, test := range tests {
msgTx := coinbaseTx.Copy()
msgTx.TxIn[0].SignatureScript = test.sigScript
tx := btcutil.NewTx(msgTx)
err := blockchain.TstCheckSerializedHeight(tx, test.wantHeight)
if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
t.Errorf("checkSerializedHeight #%d wrong error type "+
"got: %v <%T>, want: %T", i, err, err, test.err)
continue
}
if rerr, ok := err.(blockchain.RuleError); ok {
trerr := test.err.(blockchain.RuleError)
if rerr.ErrorCode != trerr.ErrorCode {
t.Errorf("checkSerializedHeight #%d wrong "+
"error code got: %v, want: %v", i,
rerr.ErrorCode, trerr.ErrorCode)
continue
}
}
}
}