mirror of
https://github.com/btcsuite/btcd.git
synced 2024-11-19 09:50:08 +01:00
bd4e64d1d4
This is mostly a backport of some of the same modifications made in Decred along with a few additional things cleaned up. In particular, this updates the code to make use of the new chainhash package. Also, since this required API changes anyways and the hash algorithm is no longer tied specifically to SHA, all other functions throughout the code base which had "Sha" in their name have been changed to Hash so they are not incorrectly implying the hash algorithm. The following is an overview of the changes: - Remove the wire.ShaHash type - Update all references to wire.ShaHash to the new chainhash.Hash type - Rename the following functions and update all references: - wire.BlockHeader.BlockSha -> BlockHash - wire.MsgBlock.BlockSha -> BlockHash - wire.MsgBlock.TxShas -> TxHashes - wire.MsgTx.TxSha -> TxHash - blockchain.ShaHashToBig -> HashToBig - peer.ShaFunc -> peer.HashFunc - Rename all variables that included sha in their name to include hash instead - Update for function name changes in other dependent packages such as btcutil - Update copyright dates on all modified files - Update glide.lock file to use the required version of btcutil
332 lines
8.8 KiB
Go
332 lines
8.8 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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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 wire
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import (
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"bytes"
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"io"
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"reflect"
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"testing"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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"github.com/davecgh/go-spew/spew"
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)
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// TestGetData tests the MsgGetData API.
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func TestGetData(t *testing.T) {
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pver := ProtocolVersion
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// Ensure the command is expected value.
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wantCmd := "getdata"
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msg := NewMsgGetData()
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if cmd := msg.Command(); cmd != wantCmd {
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t.Errorf("NewMsgGetData: 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 inventory vectors (varInt) + max allowed inventory vectors.
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wantPayload := uint32(1800009)
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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 inventory vectors are added properly.
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hash := chainhash.Hash{}
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iv := NewInvVect(InvTypeBlock, &hash)
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err := msg.AddInvVect(iv)
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if err != nil {
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t.Errorf("AddInvVect: %v", err)
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}
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if msg.InvList[0] != iv {
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t.Errorf("AddInvVect: wrong invvect added - got %v, want %v",
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spew.Sprint(msg.InvList[0]), spew.Sprint(iv))
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}
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// Ensure adding more than the max allowed inventory vectors per
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// message returns an error.
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for i := 0; i < MaxInvPerMsg; i++ {
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err = msg.AddInvVect(iv)
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}
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if err == nil {
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t.Errorf("AddInvVect: expected error on too many inventory " +
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"vectors not received")
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}
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// Ensure creating the message with a size hint larger than the max
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// works as expected.
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msg = NewMsgGetDataSizeHint(MaxInvPerMsg + 1)
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wantCap := MaxInvPerMsg
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if cap(msg.InvList) != wantCap {
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t.Errorf("NewMsgGetDataSizeHint: wrong cap for size hint - "+
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"got %v, want %v", cap(msg.InvList), wantCap)
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}
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return
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}
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// TestGetDataWire tests the MsgGetData wire encode and decode for various
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// numbers of inventory vectors and protocol versions.
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func TestGetDataWire(t *testing.T) {
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// Block 203707 hash.
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hashStr := "3264bc2ac36a60840790ba1d475d01367e7c723da941069e9dc"
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blockHash, err := chainhash.NewHashFromStr(hashStr)
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if err != nil {
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t.Errorf("NewHashFromStr: %v", err)
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}
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// Transation 1 of Block 203707 hash.
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hashStr = "d28a3dc7392bf00a9855ee93dd9a81eff82a2c4fe57fbd42cfe71b487accfaf0"
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txHash, err := chainhash.NewHashFromStr(hashStr)
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if err != nil {
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t.Errorf("NewHashFromStr: %v", err)
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}
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iv := NewInvVect(InvTypeBlock, blockHash)
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iv2 := NewInvVect(InvTypeTx, txHash)
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// Empty MsgGetData message.
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NoInv := NewMsgGetData()
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NoInvEncoded := []byte{
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0x00, // Varint for number of inventory vectors
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}
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// MsgGetData message with multiple inventory vectors.
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MultiInv := NewMsgGetData()
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MultiInv.AddInvVect(iv)
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MultiInv.AddInvVect(iv2)
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MultiInvEncoded := []byte{
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0x02, // Varint for number of inv vectors
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0x02, 0x00, 0x00, 0x00, // InvTypeBlock
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0xdc, 0xe9, 0x69, 0x10, 0x94, 0xda, 0x23, 0xc7,
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0xe7, 0x67, 0x13, 0xd0, 0x75, 0xd4, 0xa1, 0x0b,
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0x79, 0x40, 0x08, 0xa6, 0x36, 0xac, 0xc2, 0x4b,
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0x26, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 203707 hash
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0x01, 0x00, 0x00, 0x00, // InvTypeTx
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0xf0, 0xfa, 0xcc, 0x7a, 0x48, 0x1b, 0xe7, 0xcf,
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0x42, 0xbd, 0x7f, 0xe5, 0x4f, 0x2c, 0x2a, 0xf8,
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0xef, 0x81, 0x9a, 0xdd, 0x93, 0xee, 0x55, 0x98,
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0x0a, 0xf0, 0x2b, 0x39, 0xc7, 0x3d, 0x8a, 0xd2, // Tx 1 of block 203707 hash
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}
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tests := []struct {
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in *MsgGetData // Message to encode
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out *MsgGetData // Expected decoded message
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buf []byte // Wire encoding
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pver uint32 // Protocol version for wire encoding
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}{
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// Latest protocol version with no inv vectors.
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{
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NoInv,
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NoInv,
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NoInvEncoded,
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ProtocolVersion,
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},
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// Latest protocol version with multiple inv vectors.
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{
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MultiInv,
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MultiInv,
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MultiInvEncoded,
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ProtocolVersion,
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},
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// Protocol version BIP0035Version no inv vectors.
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{
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NoInv,
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NoInv,
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NoInvEncoded,
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BIP0035Version,
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},
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// Protocol version BIP0035Version with multiple inv vectors.
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{
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MultiInv,
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MultiInv,
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MultiInvEncoded,
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BIP0035Version,
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},
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// Protocol version BIP0031Version no inv vectors.
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{
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NoInv,
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NoInv,
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NoInvEncoded,
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BIP0031Version,
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},
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// Protocol version BIP0031Version with multiple inv vectors.
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{
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MultiInv,
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MultiInv,
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MultiInvEncoded,
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BIP0031Version,
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},
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// Protocol version NetAddressTimeVersion no inv vectors.
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{
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NoInv,
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NoInv,
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NoInvEncoded,
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NetAddressTimeVersion,
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},
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// Protocol version NetAddressTimeVersion with multiple inv vectors.
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{
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MultiInv,
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MultiInv,
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MultiInvEncoded,
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NetAddressTimeVersion,
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},
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// Protocol version MultipleAddressVersion no inv vectors.
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{
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NoInv,
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NoInv,
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NoInvEncoded,
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MultipleAddressVersion,
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},
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// Protocol version MultipleAddressVersion with multiple inv vectors.
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{
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MultiInv,
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MultiInv,
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MultiInvEncoded,
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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 MsgGetData
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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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// TestGetDataWireErrors performs negative tests against wire encode and decode
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// of MsgGetData to confirm error paths work correctly.
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func TestGetDataWireErrors(t *testing.T) {
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pver := ProtocolVersion
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wireErr := &MessageError{}
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// Block 203707 hash.
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hashStr := "3264bc2ac36a60840790ba1d475d01367e7c723da941069e9dc"
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blockHash, err := chainhash.NewHashFromStr(hashStr)
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if err != nil {
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t.Errorf("NewHashFromStr: %v", err)
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}
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iv := NewInvVect(InvTypeBlock, blockHash)
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// Base message used to induce errors.
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baseGetData := NewMsgGetData()
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baseGetData.AddInvVect(iv)
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baseGetDataEncoded := []byte{
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0x02, // Varint for number of inv vectors
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0x02, 0x00, 0x00, 0x00, // InvTypeBlock
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0xdc, 0xe9, 0x69, 0x10, 0x94, 0xda, 0x23, 0xc7,
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0xe7, 0x67, 0x13, 0xd0, 0x75, 0xd4, 0xa1, 0x0b,
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0x79, 0x40, 0x08, 0xa6, 0x36, 0xac, 0xc2, 0x4b,
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0x26, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 203707 hash
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}
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// Message that forces an error by having more than the max allowed inv
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// vectors.
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maxGetData := NewMsgGetData()
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for i := 0; i < MaxInvPerMsg; i++ {
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maxGetData.AddInvVect(iv)
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}
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maxGetData.InvList = append(maxGetData.InvList, iv)
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maxGetDataEncoded := []byte{
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0xfd, 0x51, 0xc3, // Varint for number of inv vectors (50001)
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}
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tests := []struct {
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in *MsgGetData // 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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// Latest protocol version with intentional read/write errors.
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// Force error in inventory vector count
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{baseGetData, baseGetDataEncoded, pver, 0, io.ErrShortWrite, io.EOF},
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// Force error in inventory list.
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{baseGetData, baseGetDataEncoded, pver, 1, io.ErrShortWrite, io.EOF},
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// Force error with greater than max inventory vectors.
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{maxGetData, maxGetDataEncoded, pver, 3, wireErr, wireErr},
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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 reflect.TypeOf(err) != reflect.TypeOf(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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// For errors which are not of type MessageError, check them for
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// equality.
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if _, ok := err.(*MessageError); !ok {
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if err != test.writeErr {
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t.Errorf("BtcEncode #%d wrong error got: %v, "+
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"want: %v", i, err, test.writeErr)
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continue
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}
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}
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// Decode from wire format.
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var msg MsgGetData
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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 reflect.TypeOf(err) != reflect.TypeOf(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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// For errors which are not of type MessageError, check them for
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// equality.
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if _, ok := err.(*MessageError); !ok {
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if err != test.readErr {
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t.Errorf("BtcDecode #%d wrong error got: %v, "+
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"want: %v", 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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}
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