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https://github.com/kaspanet/kaspad.git
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843e71515a
This commit adds a new function named SerializeSize to the public API for MsgBlock which can be used to determine how many bytes the serialized data would take without having to actually serialize it. In addition, it makes the exported BlockVersion an untyped constant as well as changes the block and tx versions to a signed integer to more closely match the protocol. Finally, this commit also adds tests for the new function. The following benchmark shows the difference between using the new function to get the serialize size for a typical block and serializing into a temporary buffer and taking the length of it: Bufffer: BenchmarkBlockSerializeSizeBuffer 200000 27050 ns/op New: BenchmarkBlockSerializeSizeNew 100000000 34 ns/op Closes #19.
584 lines
18 KiB
Go
584 lines
18 KiB
Go
// Copyright (c) 2013-2014 Conformal Systems LLC.
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package btcwire_test
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import (
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"bytes"
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"github.com/conformal/btcwire"
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"github.com/davecgh/go-spew/spew"
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"io"
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"reflect"
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"testing"
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"time"
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)
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// TestBlock tests the MsgBlock API.
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func TestBlock(t *testing.T) {
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pver := btcwire.ProtocolVersion
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// Block 1 header.
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prevHash := &blockOne.Header.PrevBlock
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merkleHash := &blockOne.Header.MerkleRoot
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bits := blockOne.Header.Bits
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nonce := blockOne.Header.Nonce
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bh := btcwire.NewBlockHeader(prevHash, merkleHash, bits, nonce)
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// Ensure the command is expected value.
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wantCmd := "block"
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msg := btcwire.NewMsgBlock(bh)
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if cmd := msg.Command(); cmd != wantCmd {
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t.Errorf("NewMsgBlock: wrong command - got %v want %v",
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cmd, wantCmd)
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}
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// Ensure max payload is expected value for latest protocol version.
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// Num addresses (varInt) + max allowed addresses.
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wantPayload := uint32(1000000)
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maxPayload := msg.MaxPayloadLength(pver)
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if maxPayload != wantPayload {
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t.Errorf("MaxPayloadLength: wrong max payload length for "+
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"protocol version %d - got %v, want %v", pver,
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maxPayload, wantPayload)
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}
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// Ensure we get the same block header data back out.
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if !reflect.DeepEqual(&msg.Header, bh) {
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t.Errorf("NewMsgBlock: wrong block header - got %v, want %v",
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spew.Sdump(&msg.Header), spew.Sdump(bh))
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}
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// Ensure transactions are added properly.
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tx := blockOne.Transactions[0].Copy()
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msg.AddTransaction(tx)
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if !reflect.DeepEqual(msg.Transactions, blockOne.Transactions) {
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t.Errorf("AddTransaction: wrong transactions - got %v, want %v",
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spew.Sdump(msg.Transactions),
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spew.Sdump(blockOne.Transactions))
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}
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// Ensure transactions are properly cleared.
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msg.ClearTransactions()
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if len(msg.Transactions) != 0 {
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t.Errorf("ClearTransactions: wrong transactions - got %v, want %v",
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len(msg.Transactions), 0)
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}
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return
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}
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// TestBlockTxShas tests the ability to generate a slice of all transaction
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// hashes from a block accurately.
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func TestBlockTxShas(t *testing.T) {
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// Block 1, transaction 1 hash.
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hashStr := "0e3e2357e806b6cdb1f70b54c3a3a17b6714ee1f0e68bebb44a74b1efd512098"
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wantHash, err := btcwire.NewShaHashFromStr(hashStr)
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if err != nil {
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t.Errorf("NewShaHashFromStr: %v", err)
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return
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}
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wantShas := []btcwire.ShaHash{*wantHash}
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shas, err := blockOne.TxShas()
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if err != nil {
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t.Errorf("TxShas: %v", err)
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}
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if !reflect.DeepEqual(shas, wantShas) {
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t.Errorf("TxShas: wrong transaction hashes - got %v, want %v",
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spew.Sdump(shas), spew.Sdump(wantShas))
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}
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}
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// TestBlockSha tests the ability to generate the hash of a block accurately.
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func TestBlockSha(t *testing.T) {
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// Block 1 hash.
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hashStr := "839a8e6886ab5951d76f411475428afc90947ee320161bbf18eb6048"
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wantHash, err := btcwire.NewShaHashFromStr(hashStr)
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if err != nil {
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t.Errorf("NewShaHashFromStr: %v", err)
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}
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// Ensure the hash produced is expected.
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blockHash, err := blockOne.BlockSha()
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if err != nil {
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t.Errorf("BlockSha: %v", err)
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}
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if !blockHash.IsEqual(wantHash) {
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t.Errorf("BlockSha: wrong hash - got %v, want %v",
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spew.Sprint(blockHash), spew.Sprint(wantHash))
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}
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}
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// TestBlockWire tests the MsgBlock wire encode and decode for various numbers
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// of transaction inputs and outputs and protocol versions.
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func TestBlockWire(t *testing.T) {
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tests := []struct {
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in *btcwire.MsgBlock // Message to encode
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out *btcwire.MsgBlock // Expected decoded message
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buf []byte // Wire encoding
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txLocs []btcwire.TxLoc // Expected transaction locations
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pver uint32 // Protocol version for wire encoding
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}{
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// Latest protocol version.
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{
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&blockOne,
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&blockOne,
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blockOneBytes,
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blockOneTxLocs,
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btcwire.ProtocolVersion,
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},
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// Protocol version BIP0035Version.
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{
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&blockOne,
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&blockOne,
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blockOneBytes,
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blockOneTxLocs,
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btcwire.BIP0035Version,
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},
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// Protocol version BIP0031Version.
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{
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&blockOne,
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&blockOne,
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blockOneBytes,
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blockOneTxLocs,
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btcwire.BIP0031Version,
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},
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// Protocol version NetAddressTimeVersion.
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{
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&blockOne,
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&blockOne,
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blockOneBytes,
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blockOneTxLocs,
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btcwire.NetAddressTimeVersion,
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},
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// Protocol version MultipleAddressVersion.
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{
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&blockOne,
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&blockOne,
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blockOneBytes,
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blockOneTxLocs,
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btcwire.MultipleAddressVersion,
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},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Encode the message to wire format.
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var buf bytes.Buffer
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err := test.in.BtcEncode(&buf, test.pver)
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if err != nil {
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t.Errorf("BtcEncode #%d error %v", i, err)
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continue
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}
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if !bytes.Equal(buf.Bytes(), test.buf) {
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t.Errorf("BtcEncode #%d\n got: %s want: %s", i,
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spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
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continue
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}
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// Decode the message from wire format.
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var msg btcwire.MsgBlock
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rbuf := bytes.NewReader(test.buf)
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err = msg.BtcDecode(rbuf, test.pver)
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if err != nil {
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t.Errorf("BtcDecode #%d error %v", i, err)
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continue
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}
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if !reflect.DeepEqual(&msg, test.out) {
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t.Errorf("BtcDecode #%d\n got: %s want: %s", i,
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spew.Sdump(&msg), spew.Sdump(test.out))
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continue
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}
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}
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}
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// TestBlockWireErrors performs negative tests against wire encode and decode
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// of MsgBlock to confirm error paths work correctly.
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func TestBlockWireErrors(t *testing.T) {
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// Use protocol version 60002 specifically here instead of the latest
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// because the test data is using bytes encoded with that protocol
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// version.
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pver := uint32(60002)
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tests := []struct {
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in *btcwire.MsgBlock // Value to encode
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buf []byte // Wire encoding
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pver uint32 // Protocol version for wire encoding
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max int // Max size of fixed buffer to induce errors
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writeErr error // Expected write error
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readErr error // Expected read error
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}{
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// Force error in version.
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{&blockOne, blockOneBytes, pver, 0, io.ErrShortWrite, io.EOF},
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// Force error in prev block hash.
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{&blockOne, blockOneBytes, pver, 4, io.ErrShortWrite, io.EOF},
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// Force error in merkle root.
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{&blockOne, blockOneBytes, pver, 36, io.ErrShortWrite, io.EOF},
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// Force error in timestamp.
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{&blockOne, blockOneBytes, pver, 68, io.ErrShortWrite, io.EOF},
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// Force error in difficulty bits.
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{&blockOne, blockOneBytes, pver, 72, io.ErrShortWrite, io.EOF},
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// Force error in header nonce.
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{&blockOne, blockOneBytes, pver, 76, io.ErrShortWrite, io.EOF},
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// Force error in transaction count.
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{&blockOne, blockOneBytes, pver, 80, io.ErrShortWrite, io.EOF},
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// Force error in transactions.
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{&blockOne, blockOneBytes, pver, 81, io.ErrShortWrite, io.EOF},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Encode to wire format.
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w := newFixedWriter(test.max)
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err := test.in.BtcEncode(w, test.pver)
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if err != test.writeErr {
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t.Errorf("BtcEncode #%d wrong error got: %v, want: %v",
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i, err, test.writeErr)
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continue
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}
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// Decode from wire format.
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var msg btcwire.MsgBlock
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r := newFixedReader(test.max, test.buf)
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err = msg.BtcDecode(r, test.pver)
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if err != test.readErr {
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t.Errorf("BtcDecode #%d wrong error got: %v, want: %v",
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i, err, test.readErr)
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continue
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}
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}
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}
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// TestBlockSerialize tests MsgBlock serialize and deserialize.
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func TestBlockSerialize(t *testing.T) {
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tests := []struct {
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in *btcwire.MsgBlock // Message to encode
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out *btcwire.MsgBlock // Expected decoded message
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buf []byte // Serialized data
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txLocs []btcwire.TxLoc // Expected transaction locations
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}{
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{
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&blockOne,
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&blockOne,
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blockOneBytes,
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blockOneTxLocs,
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},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Serialize the block.
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var buf bytes.Buffer
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err := test.in.Serialize(&buf)
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if err != nil {
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t.Errorf("Serialize #%d error %v", i, err)
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continue
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}
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if !bytes.Equal(buf.Bytes(), test.buf) {
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t.Errorf("Serialize #%d\n got: %s want: %s", i,
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spew.Sdump(buf.Bytes()), spew.Sdump(test.buf))
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continue
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}
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// Deserialize the block.
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var block btcwire.MsgBlock
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rbuf := bytes.NewReader(test.buf)
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err = block.Deserialize(rbuf)
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if err != nil {
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t.Errorf("Deserialize #%d error %v", i, err)
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continue
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}
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if !reflect.DeepEqual(&block, test.out) {
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t.Errorf("Deserialize #%d\n got: %s want: %s", i,
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spew.Sdump(&block), spew.Sdump(test.out))
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continue
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}
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// Deserialize the block while gathering transaction location
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// information.
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var txLocBlock btcwire.MsgBlock
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br := bytes.NewBuffer(test.buf)
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txLocs, err := txLocBlock.DeserializeTxLoc(br)
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if err != nil {
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t.Errorf("DeserializeTxLoc #%d error %v", i, err)
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continue
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}
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if !reflect.DeepEqual(&txLocBlock, test.out) {
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t.Errorf("DeserializeTxLoc #%d\n got: %s want: %s", i,
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spew.Sdump(&txLocBlock), spew.Sdump(test.out))
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continue
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}
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if !reflect.DeepEqual(txLocs, test.txLocs) {
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t.Errorf("DeserializeTxLoc #%d\n got: %s want: %s", i,
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spew.Sdump(txLocs), spew.Sdump(test.txLocs))
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continue
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}
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}
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}
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// TestBlockSerializeErrors performs negative tests against wire encode and
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// decode of MsgBlock to confirm error paths work correctly.
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func TestBlockSerializeErrors(t *testing.T) {
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tests := []struct {
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in *btcwire.MsgBlock // Value to encode
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buf []byte // Serialized data
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max int // Max size of fixed buffer to induce errors
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writeErr error // Expected write error
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readErr error // Expected read error
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}{
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// Force error in version.
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{&blockOne, blockOneBytes, 0, io.ErrShortWrite, io.EOF},
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// Force error in prev block hash.
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{&blockOne, blockOneBytes, 4, io.ErrShortWrite, io.EOF},
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// Force error in merkle root.
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{&blockOne, blockOneBytes, 36, io.ErrShortWrite, io.EOF},
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// Force error in timestamp.
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{&blockOne, blockOneBytes, 68, io.ErrShortWrite, io.EOF},
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// Force error in difficulty bits.
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{&blockOne, blockOneBytes, 72, io.ErrShortWrite, io.EOF},
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// Force error in header nonce.
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{&blockOne, blockOneBytes, 76, io.ErrShortWrite, io.EOF},
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// Force error in transaction count.
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{&blockOne, blockOneBytes, 80, io.ErrShortWrite, io.EOF},
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// Force error in transactions.
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{&blockOne, blockOneBytes, 81, io.ErrShortWrite, io.EOF},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Serialize the block.
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w := newFixedWriter(test.max)
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err := test.in.Serialize(w)
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if err != test.writeErr {
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t.Errorf("Serialize #%d wrong error got: %v, want: %v",
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i, err, test.writeErr)
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continue
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}
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// Deserialize the block.
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var block btcwire.MsgBlock
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r := newFixedReader(test.max, test.buf)
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err = block.Deserialize(r)
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if err != test.readErr {
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t.Errorf("Deserialize #%d wrong error got: %v, want: %v",
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i, err, test.readErr)
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continue
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}
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var txLocBlock btcwire.MsgBlock
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br := bytes.NewBuffer(test.buf[0:test.max])
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_, err = txLocBlock.DeserializeTxLoc(br)
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if err != test.readErr {
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t.Errorf("DeserializeTxLoc #%d wrong error got: %v, want: %v",
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i, err, test.readErr)
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continue
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}
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}
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}
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// TestBlockOverflowErrors performs tests to ensure deserializing blocks which
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// are intentionally crafted to use large values for the number of transactions
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// are handled properly. This could otherwise potentially be used as an attack
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// vector.
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func TestBlockOverflowErrors(t *testing.T) {
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// Use protocol version 70001 specifically here instead of the latest
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// protocol version because the test data is using bytes encoded with
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// that version.
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pver := uint32(70001)
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tests := []struct {
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buf []byte // Wire encoding
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pver uint32 // Protocol version for wire encoding
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err error // Expected error
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}{
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// Block that claims to have ~uint64(0) transactions.
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{
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[]byte{
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0x01, 0x00, 0x00, 0x00, // Version 1
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0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72,
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0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f,
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0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c,
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0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, // PrevBlock
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0x98, 0x20, 0x51, 0xfd, 0x1e, 0x4b, 0xa7, 0x44,
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0xbb, 0xbe, 0x68, 0x0e, 0x1f, 0xee, 0x14, 0x67,
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0x7b, 0xa1, 0xa3, 0xc3, 0x54, 0x0b, 0xf7, 0xb1,
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0xcd, 0xb6, 0x06, 0xe8, 0x57, 0x23, 0x3e, 0x0e, // MerkleRoot
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0x61, 0xbc, 0x66, 0x49, // Timestamp
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0xff, 0xff, 0x00, 0x1d, // Bits
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0x01, 0xe3, 0x62, 0x99, // Nonce
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, // TxnCount
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}, pver, &btcwire.MessageError{},
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},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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// Decode from wire format.
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var msg btcwire.MsgBlock
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r := bytes.NewReader(test.buf)
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err := msg.BtcDecode(r, test.pver)
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if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
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t.Errorf("BtcDecode #%d wrong error got: %v, want: %v",
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i, err, reflect.TypeOf(test.err))
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continue
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}
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// Deserialize from wire format.
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r = bytes.NewReader(test.buf)
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err = msg.Deserialize(r)
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if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
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t.Errorf("Deserialize #%d wrong error got: %v, want: %v",
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i, err, reflect.TypeOf(test.err))
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continue
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}
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// Deserialize with transaction location info from wire format.
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br := bytes.NewBuffer(test.buf)
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_, err = msg.DeserializeTxLoc(br)
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if reflect.TypeOf(err) != reflect.TypeOf(test.err) {
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t.Errorf("DeserializeTxLoc #%d wrong error got: %v, "+
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"want: %v", i, err, reflect.TypeOf(test.err))
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continue
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}
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}
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}
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// TestBlockSerializeSize performs tests to ensure the serialize size for
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// various blocks is accurate.
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func TestBlockSerializeSize(t *testing.T) {
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// Block with no transactions.
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noTxBlock := btcwire.NewMsgBlock(&blockOne.Header)
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tests := []struct {
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in *btcwire.MsgBlock // Block to encode
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size int // Expected serialized size
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}{
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// Block with no transactions.
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{noTxBlock, 81},
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// First block in the mainnet block chain.
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{&blockOne, len(blockOneBytes)},
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}
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t.Logf("Running %d tests", len(tests))
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for i, test := range tests {
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serializedSize := test.in.SerializeSize()
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if serializedSize != test.size {
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t.Errorf("MsgBlock.SerializeSize: #%d got: %d, want: "+
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"%d", i, serializedSize, test.size)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
var blockOne = btcwire.MsgBlock{
|
|
Header: btcwire.BlockHeader{
|
|
Version: 1,
|
|
PrevBlock: btcwire.ShaHash([btcwire.HashSize]byte{ // Make go vet happy.
|
|
0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72,
|
|
0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f,
|
|
0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c,
|
|
0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
}),
|
|
MerkleRoot: btcwire.ShaHash([btcwire.HashSize]byte{ // Make go vet happy.
|
|
0x98, 0x20, 0x51, 0xfd, 0x1e, 0x4b, 0xa7, 0x44,
|
|
0xbb, 0xbe, 0x68, 0x0e, 0x1f, 0xee, 0x14, 0x67,
|
|
0x7b, 0xa1, 0xa3, 0xc3, 0x54, 0x0b, 0xf7, 0xb1,
|
|
0xcd, 0xb6, 0x06, 0xe8, 0x57, 0x23, 0x3e, 0x0e,
|
|
}),
|
|
|
|
Timestamp: time.Unix(0x4966bc61, 0), // 2009-01-08 20:54:25 -0600 CST
|
|
Bits: 0x1d00ffff, // 486604799
|
|
Nonce: 0x9962e301, // 2573394689
|
|
},
|
|
Transactions: []*btcwire.MsgTx{
|
|
{
|
|
Version: 1,
|
|
TxIn: []*btcwire.TxIn{
|
|
{
|
|
PreviousOutpoint: btcwire.OutPoint{
|
|
Hash: btcwire.ShaHash{},
|
|
Index: 0xffffffff,
|
|
},
|
|
SignatureScript: []byte{
|
|
0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04,
|
|
},
|
|
Sequence: 0xffffffff,
|
|
},
|
|
},
|
|
TxOut: []*btcwire.TxOut{
|
|
{
|
|
Value: 0x12a05f200,
|
|
PkScript: []byte{
|
|
0x41, // OP_DATA_65
|
|
0x04, 0x96, 0xb5, 0x38, 0xe8, 0x53, 0x51, 0x9c,
|
|
0x72, 0x6a, 0x2c, 0x91, 0xe6, 0x1e, 0xc1, 0x16,
|
|
0x00, 0xae, 0x13, 0x90, 0x81, 0x3a, 0x62, 0x7c,
|
|
0x66, 0xfb, 0x8b, 0xe7, 0x94, 0x7b, 0xe6, 0x3c,
|
|
0x52, 0xda, 0x75, 0x89, 0x37, 0x95, 0x15, 0xd4,
|
|
0xe0, 0xa6, 0x04, 0xf8, 0x14, 0x17, 0x81, 0xe6,
|
|
0x22, 0x94, 0x72, 0x11, 0x66, 0xbf, 0x62, 0x1e,
|
|
0x73, 0xa8, 0x2c, 0xbf, 0x23, 0x42, 0xc8, 0x58,
|
|
0xee, // 65-byte signature
|
|
0xac, // OP_CHECKSIG
|
|
},
|
|
},
|
|
},
|
|
LockTime: 0,
|
|
},
|
|
},
|
|
}
|
|
|
|
// Block one serialized bytes.
|
|
var blockOneBytes = []byte{
|
|
0x01, 0x00, 0x00, 0x00, // Version 1
|
|
0x6f, 0xe2, 0x8c, 0x0a, 0xb6, 0xf1, 0xb3, 0x72,
|
|
0xc1, 0xa6, 0xa2, 0x46, 0xae, 0x63, 0xf7, 0x4f,
|
|
0x93, 0x1e, 0x83, 0x65, 0xe1, 0x5a, 0x08, 0x9c,
|
|
0x68, 0xd6, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00, // PrevBlock
|
|
0x98, 0x20, 0x51, 0xfd, 0x1e, 0x4b, 0xa7, 0x44,
|
|
0xbb, 0xbe, 0x68, 0x0e, 0x1f, 0xee, 0x14, 0x67,
|
|
0x7b, 0xa1, 0xa3, 0xc3, 0x54, 0x0b, 0xf7, 0xb1,
|
|
0xcd, 0xb6, 0x06, 0xe8, 0x57, 0x23, 0x3e, 0x0e, // MerkleRoot
|
|
0x61, 0xbc, 0x66, 0x49, // Timestamp
|
|
0xff, 0xff, 0x00, 0x1d, // Bits
|
|
0x01, 0xe3, 0x62, 0x99, // Nonce
|
|
0x01, // TxnCount
|
|
0x01, 0x00, 0x00, 0x00, // Version
|
|
0x01, // Varint for number of transaction inputs
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Previous output hash
|
|
0xff, 0xff, 0xff, 0xff, // Prevous output index
|
|
0x07, // Varint for length of signature script
|
|
0x04, 0xff, 0xff, 0x00, 0x1d, 0x01, 0x04, // Signature script (coinbase)
|
|
0xff, 0xff, 0xff, 0xff, // Sequence
|
|
0x01, // Varint for number of transaction outputs
|
|
0x00, 0xf2, 0x05, 0x2a, 0x01, 0x00, 0x00, 0x00, // Transaction amount
|
|
0x43, // Varint for length of pk script
|
|
0x41, // OP_DATA_65
|
|
0x04, 0x96, 0xb5, 0x38, 0xe8, 0x53, 0x51, 0x9c,
|
|
0x72, 0x6a, 0x2c, 0x91, 0xe6, 0x1e, 0xc1, 0x16,
|
|
0x00, 0xae, 0x13, 0x90, 0x81, 0x3a, 0x62, 0x7c,
|
|
0x66, 0xfb, 0x8b, 0xe7, 0x94, 0x7b, 0xe6, 0x3c,
|
|
0x52, 0xda, 0x75, 0x89, 0x37, 0x95, 0x15, 0xd4,
|
|
0xe0, 0xa6, 0x04, 0xf8, 0x14, 0x17, 0x81, 0xe6,
|
|
0x22, 0x94, 0x72, 0x11, 0x66, 0xbf, 0x62, 0x1e,
|
|
0x73, 0xa8, 0x2c, 0xbf, 0x23, 0x42, 0xc8, 0x58,
|
|
0xee, // 65-byte uncompressed public key
|
|
0xac, // OP_CHECKSIG
|
|
0x00, 0x00, 0x00, 0x00, // Lock time
|
|
}
|
|
|
|
// Transaction location information for block one transactions.
|
|
var blockOneTxLocs = []btcwire.TxLoc{
|
|
{TxStart: 81, TxLen: 134},
|
|
}
|