3331d6098b
IsUnspendable takes a public key script and returns whether it is spendable. Additionally, hook this into the mempool isDust function, since unspendable outputs can't be spent. This mimics Bitcoin Core commit 0aad1f13b2430165062bf9436036c1222a8724da
524 lines
13 KiB
Go
524 lines
13 KiB
Go
// Copyright (c) 2013-2015 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 txscript_test
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import (
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"bytes"
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"reflect"
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"testing"
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"github.com/btcsuite/btcd/txscript"
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)
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// TestPushedData ensured the PushedData function extracts the expected data out
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// of various scripts.
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func TestPushedData(t *testing.T) {
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t.Parallel()
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var tests = []struct {
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script string
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out [][]byte
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valid bool
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}{
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{
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"0 IF 0 ELSE 2 ENDIF",
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[][]byte{nil, nil},
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true,
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},
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{
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"16777216 10000000",
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[][]byte{
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{0x00, 0x00, 0x00, 0x01}, // 16777216
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{0x80, 0x96, 0x98, 0x00}, // 10000000
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},
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true,
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},
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{
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"DUP HASH160 '17VZNX1SN5NtKa8UQFxwQbFeFc3iqRYhem' EQUALVERIFY CHECKSIG",
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[][]byte{
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// 17VZNX1SN5NtKa8UQFxwQbFeFc3iqRYhem
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{
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0x31, 0x37, 0x56, 0x5a, 0x4e, 0x58, 0x31, 0x53, 0x4e, 0x35,
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0x4e, 0x74, 0x4b, 0x61, 0x38, 0x55, 0x51, 0x46, 0x78, 0x77,
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0x51, 0x62, 0x46, 0x65, 0x46, 0x63, 0x33, 0x69, 0x71, 0x52,
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0x59, 0x68, 0x65, 0x6d,
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},
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},
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true,
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},
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{
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"PUSHDATA4 1000 EQUAL",
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nil,
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false,
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},
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}
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for i, test := range tests {
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script := mustParseShortForm(test.script)
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data, err := txscript.PushedData(script)
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if test.valid && err != nil {
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t.Errorf("TestPushedData failed test #%d: %v\n", i, err)
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continue
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} else if !test.valid && err == nil {
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t.Errorf("TestPushedData failed test #%d: test should "+
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"be invalid\n", i)
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continue
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}
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if !reflect.DeepEqual(data, test.out) {
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t.Errorf("TestPushedData failed test #%d: want: %x "+
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"got: %x\n", i, test.out, data)
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}
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}
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}
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// TestHasCanonicalPush ensures the canonicalPush function works as expected.
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func TestHasCanonicalPush(t *testing.T) {
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t.Parallel()
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for i := 0; i < 65535; i++ {
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builder := txscript.NewScriptBuilder()
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builder.AddInt64(int64(i))
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script, err := builder.Script()
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if err != nil {
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t.Errorf("Script: test #%d unexpected error: %v\n", i,
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err)
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continue
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}
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if result := txscript.IsPushOnlyScript(script); !result {
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t.Errorf("IsPushOnlyScript: test #%d failed: %x\n", i,
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script)
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continue
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}
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pops, err := txscript.TstParseScript(script)
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if err != nil {
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t.Errorf("TstParseScript: #%d failed: %v", i, err)
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continue
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}
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for _, pop := range pops {
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if result := txscript.TstHasCanonicalPushes(pop); !result {
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t.Errorf("TstHasCanonicalPushes: test #%d "+
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"failed: %x\n", i, script)
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break
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}
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}
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}
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for i := 0; i <= txscript.MaxScriptElementSize; i++ {
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builder := txscript.NewScriptBuilder()
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builder.AddData(bytes.Repeat([]byte{0x49}, i))
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script, err := builder.Script()
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if err != nil {
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t.Errorf("StandardPushesTests test #%d unexpected error: %v\n", i, err)
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continue
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}
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if result := txscript.IsPushOnlyScript(script); !result {
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t.Errorf("StandardPushesTests IsPushOnlyScript test #%d failed: %x\n", i, script)
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continue
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}
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pops, err := txscript.TstParseScript(script)
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if err != nil {
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t.Errorf("StandardPushesTests #%d failed to TstParseScript: %v", i, err)
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continue
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}
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for _, pop := range pops {
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if result := txscript.TstHasCanonicalPushes(pop); !result {
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t.Errorf("StandardPushesTests TstHasCanonicalPushes test #%d failed: %x\n", i, script)
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break
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}
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}
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}
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}
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// TestGetPreciseSigOps ensures the more precise signature operation counting
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// mechanism which includes signatures in P2SH scripts works as expected.
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func TestGetPreciseSigOps(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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scriptSig []byte
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nSigOps int
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err error
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}{
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{
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name: "scriptSig doesn't parse",
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scriptSig: []byte{txscript.OP_PUSHDATA1, 2},
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err: txscript.ErrStackShortScript,
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},
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{
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name: "scriptSig isn't push only",
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scriptSig: []byte{txscript.OP_1, txscript.OP_DUP},
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nSigOps: 0,
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},
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{
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name: "scriptSig length 0",
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scriptSig: nil,
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nSigOps: 0,
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},
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{
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name: "No script at the end",
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// No script at end but still push only.
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scriptSig: []byte{txscript.OP_1, txscript.OP_1},
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nSigOps: 0,
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},
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{
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name: "pushed script doesn't parse",
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scriptSig: []byte{txscript.OP_DATA_2,
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txscript.OP_PUSHDATA1, 2},
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err: txscript.ErrStackShortScript,
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},
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}
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// The signature in the p2sh script is nonsensical for the tests since
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// this script will never be executed. What matters is that it matches
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// the right pattern.
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pkScript := mustParseShortForm("HASH160 DATA_20 0x433ec2ac1ffa1b7b7d0" +
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"27f564529c57197f9ae88 EQUAL")
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for _, test := range tests {
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count := txscript.GetPreciseSigOpCount(test.scriptSig, pkScript,
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true)
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if count != test.nSigOps {
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t.Errorf("%s: expected count of %d, got %d", test.name,
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test.nSigOps, count)
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}
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}
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}
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// TestRemoveOpcodes ensures that removing opcodes from scripts behaves as
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// expected.
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func TestRemoveOpcodes(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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before string
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remove byte
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err error
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after string
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}{
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{
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// Nothing to remove.
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name: "nothing to remove",
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before: "NOP",
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remove: txscript.OP_CODESEPARATOR,
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after: "NOP",
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},
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{
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// Test basic opcode removal.
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name: "codeseparator 1",
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before: "NOP CODESEPARATOR TRUE",
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remove: txscript.OP_CODESEPARATOR,
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after: "NOP TRUE",
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},
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{
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// The opcode in question is actually part of the data
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// in a previous opcode.
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name: "codeseparator by coincidence",
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before: "NOP DATA_1 CODESEPARATOR TRUE",
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remove: txscript.OP_CODESEPARATOR,
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after: "NOP DATA_1 CODESEPARATOR TRUE",
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},
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{
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name: "invalid opcode",
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before: "CAT",
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remove: txscript.OP_CODESEPARATOR,
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after: "CAT",
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},
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{
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name: "invalid length (insruction)",
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before: "PUSHDATA1",
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remove: txscript.OP_CODESEPARATOR,
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err: txscript.ErrStackShortScript,
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},
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{
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name: "invalid length (data)",
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before: "PUSHDATA1 0xff 0xfe",
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remove: txscript.OP_CODESEPARATOR,
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err: txscript.ErrStackShortScript,
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},
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}
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for _, test := range tests {
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before := mustParseShortForm(test.before)
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after := mustParseShortForm(test.after)
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result, err := txscript.TstRemoveOpcode(before, test.remove)
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if test.err != nil {
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if err != test.err {
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t.Errorf("%s: got unexpected error. exp: \"%v\" "+
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"got: \"%v\"", test.name, test.err, err)
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}
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return
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}
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if err != nil {
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t.Errorf("%s: unexpected failure: \"%v\"", test.name, err)
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return
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}
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if !bytes.Equal(after, result) {
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t.Errorf("%s: value does not equal expected: exp: \"%v\""+
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" got: \"%v\"", test.name, after, result)
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}
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}
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}
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// TestRemoveOpcodeByData ensures that removing data carrying opcodes based on
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// the data they contain works as expected.
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func TestRemoveOpcodeByData(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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before []byte
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remove []byte
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err error
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after []byte
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}{
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{
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name: "nothing to do",
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before: []byte{txscript.OP_NOP},
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remove: []byte{1, 2, 3, 4},
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after: []byte{txscript.OP_NOP},
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},
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{
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name: "simple case",
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before: []byte{txscript.OP_DATA_4, 1, 2, 3, 4},
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remove: []byte{1, 2, 3, 4},
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after: nil,
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},
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{
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name: "simple case (miss)",
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before: []byte{txscript.OP_DATA_4, 1, 2, 3, 4},
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remove: []byte{1, 2, 3, 5},
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after: []byte{txscript.OP_DATA_4, 1, 2, 3, 4},
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},
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{
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// padded to keep it canonical.
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name: "simple case (pushdata1)",
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before: append(append([]byte{txscript.OP_PUSHDATA1, 76},
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bytes.Repeat([]byte{0}, 72)...),
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[]byte{1, 2, 3, 4}...),
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remove: []byte{1, 2, 3, 4},
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after: nil,
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},
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{
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name: "simple case (pushdata1 miss)",
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before: append(append([]byte{txscript.OP_PUSHDATA1, 76},
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bytes.Repeat([]byte{0}, 72)...),
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[]byte{1, 2, 3, 4}...),
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remove: []byte{1, 2, 3, 5},
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after: append(append([]byte{txscript.OP_PUSHDATA1, 76},
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bytes.Repeat([]byte{0}, 72)...),
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[]byte{1, 2, 3, 4}...),
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},
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{
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name: "simple case (pushdata1 miss noncanonical)",
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before: []byte{txscript.OP_PUSHDATA1, 4, 1, 2, 3, 4},
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remove: []byte{1, 2, 3, 4},
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after: []byte{txscript.OP_PUSHDATA1, 4, 1, 2, 3, 4},
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},
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{
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name: "simple case (pushdata2)",
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before: append(append([]byte{txscript.OP_PUSHDATA2, 0, 1},
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bytes.Repeat([]byte{0}, 252)...),
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[]byte{1, 2, 3, 4}...),
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remove: []byte{1, 2, 3, 4},
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after: nil,
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},
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{
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name: "simple case (pushdata2 miss)",
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before: append(append([]byte{txscript.OP_PUSHDATA2, 0, 1},
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bytes.Repeat([]byte{0}, 252)...),
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[]byte{1, 2, 3, 4}...),
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remove: []byte{1, 2, 3, 4, 5},
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after: append(append([]byte{txscript.OP_PUSHDATA2, 0, 1},
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bytes.Repeat([]byte{0}, 252)...),
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[]byte{1, 2, 3, 4}...),
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},
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{
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name: "simple case (pushdata2 miss noncanonical)",
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before: []byte{txscript.OP_PUSHDATA2, 4, 0, 1, 2, 3, 4},
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remove: []byte{1, 2, 3, 4},
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after: []byte{txscript.OP_PUSHDATA2, 4, 0, 1, 2, 3, 4},
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},
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{
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// This is padded to make the push canonical.
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name: "simple case (pushdata4)",
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before: append(append([]byte{txscript.OP_PUSHDATA4, 0, 0, 1, 0},
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bytes.Repeat([]byte{0}, 65532)...),
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[]byte{1, 2, 3, 4}...),
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remove: []byte{1, 2, 3, 4},
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after: nil,
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},
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{
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name: "simple case (pushdata4 miss noncanonical)",
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before: []byte{txscript.OP_PUSHDATA4, 4, 0, 0, 0, 1, 2, 3, 4},
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remove: []byte{1, 2, 3, 4},
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after: []byte{txscript.OP_PUSHDATA4, 4, 0, 0, 0, 1, 2, 3, 4},
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},
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{
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// This is padded to make the push canonical.
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name: "simple case (pushdata4 miss)",
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before: append(append([]byte{txscript.OP_PUSHDATA4, 0, 0, 1, 0},
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bytes.Repeat([]byte{0}, 65532)...), []byte{1, 2, 3, 4}...),
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remove: []byte{1, 2, 3, 4, 5},
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after: append(append([]byte{txscript.OP_PUSHDATA4, 0, 0, 1, 0},
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bytes.Repeat([]byte{0}, 65532)...), []byte{1, 2, 3, 4}...),
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},
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{
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name: "invalid opcode ",
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before: []byte{txscript.OP_UNKNOWN187},
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remove: []byte{1, 2, 3, 4},
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after: []byte{txscript.OP_UNKNOWN187},
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},
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{
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name: "invalid length (instruction)",
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before: []byte{txscript.OP_PUSHDATA1},
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remove: []byte{1, 2, 3, 4},
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err: txscript.ErrStackShortScript,
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},
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{
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name: "invalid length (data)",
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before: []byte{txscript.OP_PUSHDATA1, 255, 254},
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remove: []byte{1, 2, 3, 4},
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err: txscript.ErrStackShortScript,
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},
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}
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for _, test := range tests {
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result, err := txscript.TstRemoveOpcodeByData(test.before,
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test.remove)
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if test.err != nil {
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if err != test.err {
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t.Errorf("%s: got unexpected error. exp: \"%v\" "+
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"got: \"%v\"", test.name, test.err, err)
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}
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return
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}
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if err != nil {
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t.Errorf("%s: unexpected failure: \"%v\"", test.name, err)
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return
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}
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if !bytes.Equal(test.after, result) {
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t.Errorf("%s: value does not equal expected: exp: \"%v\""+
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" got: \"%v\"", test.name, test.after, result)
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}
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}
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}
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// TestIsPayToScriptHash ensures the IsPayToScriptHash function returns the
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// expected results for all the scripts in scriptClassTests.
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func TestIsPayToScriptHash(t *testing.T) {
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t.Parallel()
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for _, test := range scriptClassTests {
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script := mustParseShortForm(test.script)
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shouldBe := (test.class == txscript.ScriptHashTy)
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p2sh := txscript.IsPayToScriptHash(script)
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if p2sh != shouldBe {
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t.Errorf("%s: epxected p2sh %v, got %v", test.name,
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shouldBe, p2sh)
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}
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}
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}
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// TestHasCanonicalPushes ensures the canonicalPush function properly determines
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// what is considered a canonical push for the purposes of removeOpcodeByData.
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func TestHasCanonicalPushes(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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script string
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expected bool
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}{
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{
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name: "does not parse",
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script: "0x046708afdb0fe5548271967f1a67130b7105cd6a82" +
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"8e03909a67962e0ea1f61d",
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expected: false,
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},
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{
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name: "non-canonical push",
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script: "PUSHDATA1 0x04 0x01020304",
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expected: false,
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},
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}
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for i, test := range tests {
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script := mustParseShortForm(test.script)
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pops, err := txscript.TstParseScript(script)
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if err != nil {
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if test.expected {
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t.Errorf("TstParseScript #%d failed: %v", i, err)
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}
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continue
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}
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for _, pop := range pops {
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if txscript.TstHasCanonicalPushes(pop) != test.expected {
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t.Errorf("TstHasCanonicalPushes: #%d (%s) "+
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"wrong result\ngot: %v\nwant: %v", i,
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test.name, true, test.expected)
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break
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}
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}
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}
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}
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|
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// TestIsPushOnlyScript ensures the IsPushOnlyScript function returns the
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// expected results.
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func TestIsPushOnlyScript(t *testing.T) {
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t.Parallel()
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test := struct {
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name string
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script []byte
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expected bool
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}{
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name: "does not parse",
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script: mustParseShortForm("0x046708afdb0fe5548271967f1a67130" +
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"b7105cd6a828e03909a67962e0ea1f61d"),
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expected: false,
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}
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if txscript.IsPushOnlyScript(test.script) != test.expected {
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t.Errorf("IsPushOnlyScript (%s) wrong result\ngot: %v\nwant: "+
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"%v", test.name, true, test.expected)
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}
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}
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|
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// TestIsUnspendable ensures the IsUnspendable function returns the expected
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// results.
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func TestIsUnspendable(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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pkScript []byte
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expected bool
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}{
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{
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// Unspendable
|
|
pkScript: []byte{0x6a, 0x04, 0x74, 0x65, 0x73, 0x74},
|
|
expected: true,
|
|
},
|
|
{
|
|
// Spendable
|
|
pkScript: []byte{0x76, 0xa9, 0x14, 0x29, 0x95, 0xa0,
|
|
0xfe, 0x68, 0x43, 0xfa, 0x9b, 0x95, 0x45,
|
|
0x97, 0xf0, 0xdc, 0xa7, 0xa4, 0x4d, 0xf6,
|
|
0xfa, 0x0b, 0x5c, 0x88, 0xac},
|
|
expected: false,
|
|
},
|
|
}
|
|
|
|
for i, test := range tests {
|
|
res := txscript.IsUnspendable(test.pkScript)
|
|
if res != test.expected {
|
|
t.Errorf("TestIsUnspendable #%d failed: got %v want %v",
|
|
i, res, test.expected)
|
|
continue
|
|
}
|
|
}
|
|
}
|