379 lines
12 KiB
Go
379 lines
12 KiB
Go
// Copyright (c) 2013 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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"net"
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"reflect"
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"strings"
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"testing"
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"time"
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)
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// TestVersion tests the MsgVersion API.
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func TestVersion(t *testing.T) {
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pver := btcwire.ProtocolVersion
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// Create version message data.
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userAgent := "/btcdtest:0.0.1/"
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lastBlock := int32(234234)
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tcpAddrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8333}
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me, err := btcwire.NewNetAddress(tcpAddrMe, btcwire.SFNodeNetwork)
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if err != nil {
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t.Errorf("NewNetAddress: %v", err)
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}
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tcpAddrYou := &net.TCPAddr{IP: net.ParseIP("192.168.0.1"), Port: 8333}
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you, err := btcwire.NewNetAddress(tcpAddrYou, btcwire.SFNodeNetwork)
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if err != nil {
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t.Errorf("NewNetAddress: %v", err)
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}
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nonce, err := btcwire.RandomUint64()
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if err != nil {
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t.Errorf("RandomUint64: error generating nonce: %v", err)
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}
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// Ensure we get the correct data back out.
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msg := btcwire.NewMsgVersion(me, you, nonce, userAgent, lastBlock)
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if msg.ProtocolVersion != int32(pver) {
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t.Errorf("NewMsgVersion: wrong protocol version - got %v, want %v",
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msg.ProtocolVersion, pver)
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}
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if !reflect.DeepEqual(&msg.AddrMe, me) {
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t.Errorf("NewMsgVersion: wrong me address - got %v, want %v",
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spew.Sdump(&msg.AddrMe), spew.Sdump(me))
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}
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if !reflect.DeepEqual(&msg.AddrYou, you) {
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t.Errorf("NewMsgVersion: wrong you address - got %v, want %v",
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spew.Sdump(&msg.AddrYou), spew.Sdump(you))
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}
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if msg.Nonce != nonce {
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t.Errorf("NewMsgVersion: wrong nonce - got %v, want %v",
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msg.Nonce, nonce)
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}
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if msg.UserAgent != userAgent {
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t.Errorf("NewMsgVersion: wrong user agent - got %v, want %v",
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msg.UserAgent, userAgent)
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}
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if msg.LastBlock != lastBlock {
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t.Errorf("NewMsgVersion: wrong last block - got %v, want %v",
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msg.LastBlock, lastBlock)
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}
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// Version message should not have any services set by default.
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if msg.Services != 0 {
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t.Errorf("NewMsgVersion: wrong default services - got %v, want %v",
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msg.Services, 0)
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}
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if msg.HasService(btcwire.SFNodeNetwork) {
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t.Errorf("HasService: SFNodeNetwork service is set")
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}
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// Ensure the command is expected value.
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wantCmd := "version"
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if cmd := msg.Command(); cmd != wantCmd {
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t.Errorf("NewMsgVersion: 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.
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// Protocol version 4 bytes + services 8 bytes + timestamp 8 bytes +
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// remote and local net addresses + nonce 8 bytes + length of user agent
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// (varInt) + max allowed user agent length + last block 4 bytes.
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wantPayload := uint32(2101)
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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 adding the full service node flag works.
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msg.AddService(btcwire.SFNodeNetwork)
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if msg.Services != btcwire.SFNodeNetwork {
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t.Errorf("AddService: wrong services - got %v, want %v",
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msg.Services, btcwire.SFNodeNetwork)
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}
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if !msg.HasService(btcwire.SFNodeNetwork) {
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t.Errorf("HasService: SFNodeNetwork service not set")
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}
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// Use a fake connection.
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conn := &fakeConn{localAddr: tcpAddrMe, remoteAddr: tcpAddrYou}
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msg, err = btcwire.NewMsgVersionFromConn(conn, nonce, userAgent, lastBlock)
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if err != nil {
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t.Errorf("NewMsgVersionFromConn: %v", err)
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}
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// Ensure we get the correct connection data back out.
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if !msg.AddrMe.IP.Equal(tcpAddrMe.IP) {
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t.Errorf("NewMsgVersionFromConn: wrong me ip - got %v, want %v",
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msg.AddrMe.IP, tcpAddrMe.IP)
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}
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if !msg.AddrYou.IP.Equal(tcpAddrYou.IP) {
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t.Errorf("NewMsgVersionFromConn: wrong you ip - got %v, want %v",
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msg.AddrYou.IP, tcpAddrYou.IP)
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}
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// Use a fake connection with local UDP addresses to force a failure.
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conn = &fakeConn{
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localAddr: &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 8333},
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remoteAddr: tcpAddrYou,
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}
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msg, err = btcwire.NewMsgVersionFromConn(conn, nonce, userAgent, lastBlock)
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if err != btcwire.ErrInvalidNetAddr {
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t.Errorf("NewMsgVersionFromConn: expected error not received "+
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"- got %v, want %v", err, btcwire.ErrInvalidNetAddr)
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}
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// Use a fake connection with remote UDP addresses to force a failure.
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conn = &fakeConn{
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localAddr: tcpAddrMe,
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remoteAddr: &net.UDPAddr{IP: net.ParseIP("192.168.0.1"), Port: 8333},
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}
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msg, err = btcwire.NewMsgVersionFromConn(conn, nonce, userAgent, lastBlock)
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if err != btcwire.ErrInvalidNetAddr {
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t.Errorf("NewMsgVersionFromConn: expected error not received "+
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"- got %v, want %v", err, btcwire.ErrInvalidNetAddr)
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}
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return
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}
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// TestAlertWire tests the MsgAlert wire encode and decode for various protocol
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// versions.
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func TestVersionWire(t *testing.T) {
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tests := []struct {
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in *btcwire.MsgVersion // Message to encode
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out *btcwire.MsgVersion // 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.
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{
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baseVersion,
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baseVersion,
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baseVersionEncoded,
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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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baseVersion,
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baseVersion,
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baseVersionEncoded,
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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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baseVersion,
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baseVersion,
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baseVersionEncoded,
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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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baseVersion,
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baseVersion,
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baseVersionEncoded,
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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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baseVersion,
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baseVersion,
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baseVersionEncoded,
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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.MsgVersion
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rbuf := bytes.NewBuffer(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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// TestVersionWireErrors 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 TestVersionWireErrors(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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btcwireErr := &btcwire.MessageError{}
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// Copy the base version and change the user agent to exceed max limits.
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bvc := *baseVersion
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exceedUAVer := &bvc
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newUA := "/" + strings.Repeat("t", btcwire.MaxUserAgentLen-8+1) + ":0.0.1/"
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exceedUAVer.UserAgent = newUA
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// Encode the new UA length as a varint.
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var newUAVarIntBuf bytes.Buffer
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err := btcwire.TstWriteVarInt(&newUAVarIntBuf, pver, uint64(len(newUA)))
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if err != nil {
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t.Errorf("writeVarInt: error %v", err)
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}
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// Make a new buffer big enough to hold the base version plus the new
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// bytes for the bigger varint to hold the new size of the user agent
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// and the new user agent string. Then stich it all together.
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newLen := len(baseVersionEncoded) - len(baseVersion.UserAgent)
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newLen = newLen + len(newUAVarIntBuf.Bytes()) - 1 + len(newUA)
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exceedUAVerEncoded := make([]byte, newLen)
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copy(exceedUAVerEncoded, baseVersionEncoded[0:80])
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copy(exceedUAVerEncoded[80:], newUAVarIntBuf.Bytes())
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copy(exceedUAVerEncoded[83:], []byte(newUA))
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copy(exceedUAVerEncoded[83+len(newUA):], baseVersionEncoded[97:100])
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tests := []struct {
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in *btcwire.MsgVersion // 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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{baseVersion, baseVersionEncoded, pver, 0, io.ErrShortWrite, io.EOF},
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// Force error in services.
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{baseVersion, baseVersionEncoded, pver, 4, io.ErrShortWrite, io.EOF},
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// Force error in timestamp.
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{baseVersion, baseVersionEncoded, pver, 12, io.ErrShortWrite, io.EOF},
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// Force error in remote address.
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{baseVersion, baseVersionEncoded, pver, 20, io.ErrShortWrite, io.EOF},
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// Force error in local address.
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{baseVersion, baseVersionEncoded, pver, 46, io.ErrShortWrite, io.EOF},
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// Force error in nonce.
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{baseVersion, baseVersionEncoded, pver, 72, io.ErrShortWrite, io.EOF},
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// Force error in user agent length.
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{baseVersion, baseVersionEncoded, pver, 80, io.ErrShortWrite, io.EOF},
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// Force error in user agent.
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{baseVersion, baseVersionEncoded, pver, 81, io.ErrShortWrite, io.EOF},
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// Force error in last block.
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{baseVersion, baseVersionEncoded, pver, 97, io.ErrShortWrite, io.EOF},
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// Force error due to user agent too big.
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{exceedUAVer, exceedUAVerEncoded, pver, newLen, btcwireErr, btcwireErr},
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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 btcwire.MessageError, check
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// them for equality.
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if _, ok := err.(*btcwire.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 btcwire.MsgVersion
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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 btcwire.MessageError, check
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// them for equality.
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if _, ok := err.(*btcwire.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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// baseVersion is used in the various tests as a baseline MsgVersion.
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var baseVersion = &btcwire.MsgVersion{
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ProtocolVersion: 60002,
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Services: btcwire.SFNodeNetwork,
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Timestamp: time.Unix(0x495fab29, 0), // 2009-01-03 12:15:05 -0600 CST)
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AddrYou: btcwire.NetAddress{
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Timestamp: time.Time{}, // Zero value -- no timestamp in version
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Services: btcwire.SFNodeNetwork,
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IP: net.ParseIP("192.168.0.1"),
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Port: 8333,
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},
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AddrMe: btcwire.NetAddress{
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Timestamp: time.Time{}, // Zero value -- no timestamp in version
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Services: btcwire.SFNodeNetwork,
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IP: net.ParseIP("127.0.0.1"),
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Port: 8333,
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},
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Nonce: 123123, // 0x1e0f3
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UserAgent: "/btcdtest:0.0.1/",
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LastBlock: 234234, // 0x392fa
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}
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// baseVersionEncoded is the wire encoded bytes for baseVersion using protocol
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// version 60002 and is used in the various tests.
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var baseVersionEncoded = []byte{
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0x62, 0xea, 0x00, 0x00, // Protocol version 60002
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x29, 0xab, 0x5f, 0x49, 0x00, 0x00, 0x00, 0x00, // 64-bit Timestamp
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// AddrYou -- No timestamp for NetAddress in version message
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0xff, 0xff, 0xc0, 0xa8, 0x00, 0x01, // IP 192.168.0.1
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0x20, 0x8d, // Port 8333 in big-endian
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// AddrMe -- No timestamp for NetAddress in version message
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // SFNodeNetwork
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x01, // IP 127.0.0.1
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0x20, 0x8d, // Port 8333 in big-endian
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0xf3, 0xe0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, // Nonce
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0x10, // Varint for user agent length
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0x2f, 0x62, 0x74, 0x63, 0x64, 0x74, 0x65, 0x73,
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0x74, 0x3a, 0x30, 0x2e, 0x30, 0x2e, 0x31, 0x2f, // User agent
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0xfa, 0x92, 0x03, 0x00, // Last block
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}
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