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
382 lines
12 KiB
Go
382 lines
12 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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// TestGetHeaders tests the MsgGetHeader API.
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func TestGetHeaders(t *testing.T) {
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pver := ProtocolVersion
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// Block 99500 hash.
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hashStr := "000000000002e7ad7b9eef9479e4aabc65cb831269cc20d2632c13684406dee0"
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locatorHash, 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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// Ensure the command is expected value.
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wantCmd := "getheaders"
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msg := NewMsgGetHeaders()
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if cmd := msg.Command(); cmd != wantCmd {
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t.Errorf("NewMsgGetHeaders: 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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// Protocol version 4 bytes + num hashes (varInt) + max block locator
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// hashes + hash stop.
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wantPayload := uint32(16045)
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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 block locator hashes are added properly.
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err = msg.AddBlockLocatorHash(locatorHash)
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if err != nil {
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t.Errorf("AddBlockLocatorHash: %v", err)
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}
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if msg.BlockLocatorHashes[0] != locatorHash {
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t.Errorf("AddBlockLocatorHash: wrong block locator added - "+
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"got %v, want %v",
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spew.Sprint(msg.BlockLocatorHashes[0]),
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spew.Sprint(locatorHash))
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}
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// Ensure adding more than the max allowed block locator hashes per
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// message returns an error.
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for i := 0; i < MaxBlockLocatorsPerMsg; i++ {
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err = msg.AddBlockLocatorHash(locatorHash)
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}
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if err == nil {
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t.Errorf("AddBlockLocatorHash: expected error on too many " +
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"block locator hashes not received")
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}
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return
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}
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// TestGetHeadersWire tests the MsgGetHeaders wire encode and decode for various
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// numbers of block locator hashes and protocol versions.
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func TestGetHeadersWire(t *testing.T) {
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// Set protocol inside getheaders message. Use protocol version 60002
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// specifically here instead of the latest because the test data is
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// using bytes encoded with that protocol version.
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pver := uint32(60002)
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// Block 99499 hash.
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hashStr := "2710f40c87ec93d010a6fd95f42c59a2cbacc60b18cf6b7957535"
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hashLocator, 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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// Block 99500 hash.
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hashStr = "2e7ad7b9eef9479e4aabc65cb831269cc20d2632c13684406dee0"
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hashLocator2, 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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// Block 100000 hash.
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hashStr = "3ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506"
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hashStop, 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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// MsgGetHeaders message with no block locators or stop hash.
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noLocators := NewMsgGetHeaders()
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noLocators.ProtocolVersion = pver
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noLocatorsEncoded := []byte{
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0x62, 0xea, 0x00, 0x00, // Protocol version 60002
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0x00, // Varint for number of block locator hashes
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Hash stop
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}
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// MsgGetHeaders message with multiple block locators and a stop hash.
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multiLocators := NewMsgGetHeaders()
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multiLocators.ProtocolVersion = pver
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multiLocators.HashStop = *hashStop
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multiLocators.AddBlockLocatorHash(hashLocator2)
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multiLocators.AddBlockLocatorHash(hashLocator)
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multiLocatorsEncoded := []byte{
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0x62, 0xea, 0x00, 0x00, // Protocol version 60002
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0x02, // Varint for number of block locator hashes
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0xe0, 0xde, 0x06, 0x44, 0x68, 0x13, 0x2c, 0x63,
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0xd2, 0x20, 0xcc, 0x69, 0x12, 0x83, 0xcb, 0x65,
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0xbc, 0xaa, 0xe4, 0x79, 0x94, 0xef, 0x9e, 0x7b,
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0xad, 0xe7, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99500 hash
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0x35, 0x75, 0x95, 0xb7, 0xf6, 0x8c, 0xb1, 0x60,
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0xcc, 0xba, 0x2c, 0x9a, 0xc5, 0x42, 0x5f, 0xd9,
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0x6f, 0x0a, 0x01, 0x3d, 0xc9, 0x7e, 0xc8, 0x40,
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0x0f, 0x71, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99499 hash
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0x06, 0xe5, 0x33, 0xfd, 0x1a, 0xda, 0x86, 0x39,
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0x1f, 0x3f, 0x6c, 0x34, 0x32, 0x04, 0xb0, 0xd2,
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0x78, 0xd4, 0xaa, 0xec, 0x1c, 0x0b, 0x20, 0xaa,
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0x27, 0xba, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // Hash stop
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}
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tests := []struct {
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in *MsgGetHeaders // Message to encode
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out *MsgGetHeaders // 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 block locators.
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{
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noLocators,
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noLocators,
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noLocatorsEncoded,
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ProtocolVersion,
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},
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// Latest protocol version with multiple block locators.
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{
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multiLocators,
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multiLocators,
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multiLocatorsEncoded,
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ProtocolVersion,
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},
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// Protocol version BIP0035Version with no block locators.
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{
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noLocators,
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noLocators,
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noLocatorsEncoded,
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BIP0035Version,
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},
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// Protocol version BIP0035Version with multiple block locators.
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{
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multiLocators,
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multiLocators,
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multiLocatorsEncoded,
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BIP0035Version,
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},
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// Protocol version BIP0031Version with no block locators.
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{
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noLocators,
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noLocators,
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noLocatorsEncoded,
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BIP0031Version,
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},
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// Protocol version BIP0031Versionwith multiple block locators.
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{
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multiLocators,
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multiLocators,
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multiLocatorsEncoded,
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BIP0031Version,
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},
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// Protocol version NetAddressTimeVersion with no block locators.
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{
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noLocators,
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noLocators,
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noLocatorsEncoded,
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NetAddressTimeVersion,
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},
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// Protocol version NetAddressTimeVersion multiple block locators.
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{
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multiLocators,
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multiLocators,
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multiLocatorsEncoded,
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NetAddressTimeVersion,
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},
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// Protocol version MultipleAddressVersion with no block locators.
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{
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noLocators,
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noLocators,
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noLocatorsEncoded,
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MultipleAddressVersion,
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},
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// Protocol version MultipleAddressVersion multiple block locators.
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{
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multiLocators,
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multiLocators,
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multiLocatorsEncoded,
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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 MsgGetHeaders
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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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// TestGetHeadersWireErrors performs negative tests against wire encode and
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// decode of MsgGetHeaders to confirm error paths work correctly.
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func TestGetHeadersWireErrors(t *testing.T) {
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// Set protocol inside getheaders message. Use protocol version 60002
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// specifically here instead of the latest because the test data is
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// using bytes encoded with that protocol version.
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pver := uint32(60002)
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wireErr := &MessageError{}
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// Block 99499 hash.
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hashStr := "2710f40c87ec93d010a6fd95f42c59a2cbacc60b18cf6b7957535"
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hashLocator, 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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// Block 99500 hash.
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hashStr = "2e7ad7b9eef9479e4aabc65cb831269cc20d2632c13684406dee0"
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hashLocator2, 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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// Block 100000 hash.
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hashStr = "3ba27aa200b1cecaad478d2b00432346c3f1f3986da1afd33e506"
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hashStop, 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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// MsgGetHeaders message with multiple block locators and a stop hash.
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baseGetHeaders := NewMsgGetHeaders()
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baseGetHeaders.ProtocolVersion = pver
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baseGetHeaders.HashStop = *hashStop
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baseGetHeaders.AddBlockLocatorHash(hashLocator2)
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baseGetHeaders.AddBlockLocatorHash(hashLocator)
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baseGetHeadersEncoded := []byte{
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0x62, 0xea, 0x00, 0x00, // Protocol version 60002
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0x02, // Varint for number of block locator hashes
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0xe0, 0xde, 0x06, 0x44, 0x68, 0x13, 0x2c, 0x63,
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0xd2, 0x20, 0xcc, 0x69, 0x12, 0x83, 0xcb, 0x65,
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0xbc, 0xaa, 0xe4, 0x79, 0x94, 0xef, 0x9e, 0x7b,
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0xad, 0xe7, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99500 hash
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0x35, 0x75, 0x95, 0xb7, 0xf6, 0x8c, 0xb1, 0x60,
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0xcc, 0xba, 0x2c, 0x9a, 0xc5, 0x42, 0x5f, 0xd9,
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0x6f, 0x0a, 0x01, 0x3d, 0xc9, 0x7e, 0xc8, 0x40,
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0x0f, 0x71, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, // Block 99499 hash
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0x06, 0xe5, 0x33, 0xfd, 0x1a, 0xda, 0x86, 0x39,
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0x1f, 0x3f, 0x6c, 0x34, 0x32, 0x04, 0xb0, 0xd2,
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0x78, 0xd4, 0xaa, 0xec, 0x1c, 0x0b, 0x20, 0xaa,
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0x27, 0xba, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // Hash stop
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}
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// Message that forces an error by having more than the max allowed
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// block locator hashes.
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maxGetHeaders := NewMsgGetHeaders()
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for i := 0; i < MaxBlockLocatorsPerMsg; i++ {
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maxGetHeaders.AddBlockLocatorHash(&mainNetGenesisHash)
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}
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maxGetHeaders.BlockLocatorHashes = append(maxGetHeaders.BlockLocatorHashes,
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&mainNetGenesisHash)
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maxGetHeadersEncoded := []byte{
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0x62, 0xea, 0x00, 0x00, // Protocol version 60002
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0xfd, 0xf5, 0x01, // Varint for number of block loc hashes (501)
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}
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tests := []struct {
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in *MsgGetHeaders // 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 protocol version.
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{baseGetHeaders, baseGetHeadersEncoded, pver, 0, io.ErrShortWrite, io.EOF},
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// Force error in block locator hash count.
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{baseGetHeaders, baseGetHeadersEncoded, pver, 4, io.ErrShortWrite, io.EOF},
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// Force error in block locator hashes.
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{baseGetHeaders, baseGetHeadersEncoded, pver, 5, io.ErrShortWrite, io.EOF},
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// Force error in stop hash.
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{baseGetHeaders, baseGetHeadersEncoded, pver, 69, io.ErrShortWrite, io.EOF},
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// Force error with greater than max block locator hashes.
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{maxGetHeaders, maxGetHeadersEncoded, pver, 7, 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 MsgGetHeaders
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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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