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
666 lines
17 KiB
Go
666 lines
17 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 txscript_test
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import (
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"bytes"
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"strconv"
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"strings"
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"testing"
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"github.com/btcsuite/btcd/chaincfg/chainhash"
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. "github.com/btcsuite/btcd/txscript"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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)
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// testName returns a descriptive test name for the given reference test data.
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func testName(test []string) (string, error) {
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var name string
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if len(test) < 3 || len(test) > 4 {
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return name, fmt.Errorf("invalid test length %d", len(test))
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}
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if len(test) == 4 {
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name = fmt.Sprintf("test (%s)", test[3])
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} else {
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name = fmt.Sprintf("test ([%s, %s, %s])", test[0], test[1],
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test[2])
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}
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return name, nil
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}
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// parse hex string into a []byte.
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func parseHex(tok string) ([]byte, error) {
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if !strings.HasPrefix(tok, "0x") {
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return nil, errors.New("not a hex number")
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}
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return hex.DecodeString(tok[2:])
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}
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// shortFormOps holds a map of opcode names to values for use in short form
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// parsing. It is declared here so it only needs to be created once.
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var shortFormOps map[string]byte
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// parseShortForm parses a string as as used in the Bitcoin Core reference tests
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// into the script it came from.
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//
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// The format used for these tests is pretty simple if ad-hoc:
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// - Opcodes other than the push opcodes and unknown are present as
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// either OP_NAME or just NAME
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// - Plain numbers are made into push operations
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// - Numbers beginning with 0x are inserted into the []byte as-is (so
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// 0x14 is OP_DATA_20)
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// - Single quoted strings are pushed as data
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// - Anything else is an error
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func parseShortForm(script string) ([]byte, error) {
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// Only create the short form opcode map once.
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if shortFormOps == nil {
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ops := make(map[string]byte)
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for opcodeName, opcodeValue := range OpcodeByName {
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if strings.Contains(opcodeName, "OP_UNKNOWN") {
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continue
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}
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ops[opcodeName] = opcodeValue
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// The opcodes named OP_# can't have the OP_ prefix
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// stripped or they would conflict with the plain
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// numbers. Also, since OP_FALSE and OP_TRUE are
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// aliases for the OP_0, and OP_1, respectively, they
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// have the same value, so detect those by name and
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// allow them.
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if (opcodeName == "OP_FALSE" || opcodeName == "OP_TRUE") ||
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(opcodeValue != OP_0 && (opcodeValue < OP_1 ||
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opcodeValue > OP_16)) {
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ops[strings.TrimPrefix(opcodeName, "OP_")] = opcodeValue
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}
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}
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shortFormOps = ops
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}
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// Split only does one separator so convert all \n and tab into space.
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script = strings.Replace(script, "\n", " ", -1)
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script = strings.Replace(script, "\t", " ", -1)
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tokens := strings.Split(script, " ")
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builder := NewScriptBuilder()
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for _, tok := range tokens {
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if len(tok) == 0 {
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continue
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}
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// if parses as a plain number
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if num, err := strconv.ParseInt(tok, 10, 64); err == nil {
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builder.AddInt64(num)
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continue
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} else if bts, err := parseHex(tok); err == nil {
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builder.TstConcatRawScript(bts)
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} else if len(tok) >= 2 &&
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tok[0] == '\'' && tok[len(tok)-1] == '\'' {
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builder.AddFullData([]byte(tok[1 : len(tok)-1]))
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} else if opcode, ok := shortFormOps[tok]; ok {
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builder.AddOp(opcode)
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} else {
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return nil, fmt.Errorf("bad token \"%s\"", tok)
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}
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}
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return builder.Script()
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}
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// parseScriptFlags parses the provided flags string from the format used in the
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// reference tests into ScriptFlags suitable for use in the script engine.
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func parseScriptFlags(flagStr string) (ScriptFlags, error) {
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var flags ScriptFlags
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sFlags := strings.Split(flagStr, ",")
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for _, flag := range sFlags {
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switch flag {
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case "":
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// Nothing.
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case "CHECKLOCKTIMEVERIFY":
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flags |= ScriptVerifyCheckLockTimeVerify
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case "CLEANSTACK":
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flags |= ScriptVerifyCleanStack
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case "DERSIG":
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flags |= ScriptVerifyDERSignatures
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case "DISCOURAGE_UPGRADABLE_NOPS":
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flags |= ScriptDiscourageUpgradableNops
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case "LOW_S":
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flags |= ScriptVerifyLowS
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case "MINIMALDATA":
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flags |= ScriptVerifyMinimalData
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case "NONE":
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// Nothing.
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case "NULLDUMMY":
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flags |= ScriptStrictMultiSig
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case "P2SH":
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flags |= ScriptBip16
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case "SIGPUSHONLY":
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flags |= ScriptVerifySigPushOnly
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case "STRICTENC":
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flags |= ScriptVerifyStrictEncoding
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default:
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return flags, fmt.Errorf("invalid flag: %s", flag)
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}
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}
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return flags, nil
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}
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// createSpendTx generates a basic spending transaction given the passed
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// signature and public key scripts.
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func createSpendingTx(sigScript, pkScript []byte) *wire.MsgTx {
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coinbaseTx := wire.NewMsgTx()
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outPoint := wire.NewOutPoint(&chainhash.Hash{}, ^uint32(0))
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txIn := wire.NewTxIn(outPoint, []byte{OP_0, OP_0})
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txOut := wire.NewTxOut(0, pkScript)
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coinbaseTx.AddTxIn(txIn)
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coinbaseTx.AddTxOut(txOut)
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spendingTx := wire.NewMsgTx()
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coinbaseTxHash := coinbaseTx.TxHash()
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outPoint = wire.NewOutPoint(&coinbaseTxHash, 0)
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txIn = wire.NewTxIn(outPoint, sigScript)
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txOut = wire.NewTxOut(0, nil)
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spendingTx.AddTxIn(txIn)
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spendingTx.AddTxOut(txOut)
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return spendingTx
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}
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// TestScriptInvalidTests ensures all of the tests in script_invalid.json fail
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// as expected.
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func TestScriptInvalidTests(t *testing.T) {
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file, err := ioutil.ReadFile("data/script_invalid.json")
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if err != nil {
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t.Errorf("TestBitcoindInvalidTests: %v\n", err)
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return
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}
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var tests [][]string
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err = json.Unmarshal(file, &tests)
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if err != nil {
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t.Errorf("TestBitcoindInvalidTests couldn't Unmarshal: %v",
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err)
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return
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}
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sigCache := NewSigCache(10)
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sigCacheToggle := []bool{true, false}
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for _, useSigCache := range sigCacheToggle {
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for i, test := range tests {
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// Skip comments
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if len(test) == 1 {
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continue
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}
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name, err := testName(test)
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if err != nil {
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t.Errorf("TestBitcoindInvalidTests: invalid test #%d",
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i)
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continue
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}
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scriptSig, err := parseShortForm(test[0])
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if err != nil {
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t.Errorf("%s: can't parse scriptSig; %v", name, err)
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continue
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}
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scriptPubKey, err := parseShortForm(test[1])
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if err != nil {
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t.Errorf("%s: can't parse scriptPubkey; %v", name, err)
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continue
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}
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flags, err := parseScriptFlags(test[2])
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if err != nil {
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t.Errorf("%s: %v", name, err)
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continue
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}
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tx := createSpendingTx(scriptSig, scriptPubKey)
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var vm *Engine
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if useSigCache {
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vm, err = NewEngine(scriptPubKey, tx, 0, flags, sigCache)
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} else {
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vm, err = NewEngine(scriptPubKey, tx, 0, flags, nil)
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}
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if err == nil {
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if err := vm.Execute(); err == nil {
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t.Errorf("%s test succeeded when it "+
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"should have failed\n", name)
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}
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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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// TestScriptValidTests ensures all of the tests in script_valid.json pass as
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// expected.
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func TestScriptValidTests(t *testing.T) {
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file, err := ioutil.ReadFile("data/script_valid.json")
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if err != nil {
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t.Errorf("TestBitcoinValidTests: %v\n", err)
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return
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}
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var tests [][]string
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err = json.Unmarshal(file, &tests)
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if err != nil {
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t.Errorf("TestBitcoindValidTests couldn't Unmarshal: %v",
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err)
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return
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}
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sigCache := NewSigCache(10)
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sigCacheToggle := []bool{true, false}
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for _, useSigCache := range sigCacheToggle {
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for i, test := range tests {
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// Skip comments
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if len(test) == 1 {
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continue
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}
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name, err := testName(test)
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if err != nil {
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t.Errorf("TestBitcoindValidTests: invalid test #%d",
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i)
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continue
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}
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scriptSig, err := parseShortForm(test[0])
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if err != nil {
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t.Errorf("%s: can't parse scriptSig; %v", name, err)
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continue
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}
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scriptPubKey, err := parseShortForm(test[1])
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if err != nil {
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t.Errorf("%s: can't parse scriptPubkey; %v", name, err)
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continue
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}
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flags, err := parseScriptFlags(test[2])
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if err != nil {
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t.Errorf("%s: %v", name, err)
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continue
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}
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tx := createSpendingTx(scriptSig, scriptPubKey)
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var vm *Engine
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if useSigCache {
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vm, err = NewEngine(scriptPubKey, tx, 0, flags, sigCache)
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} else {
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vm, err = NewEngine(scriptPubKey, tx, 0, flags, nil)
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}
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if err != nil {
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t.Errorf("%s failed to create script: %v", name, err)
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continue
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}
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err = vm.Execute()
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if err != nil {
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t.Errorf("%s failed to execute: %v", name, err)
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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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// testVecF64ToUint32 properly handles conversion of float64s read from the JSON
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// test data to unsigned 32-bit integers. This is necessary because some of the
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// test data uses -1 as a shortcut to mean max uint32 and direct conversion of a
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// negative float to an unsigned int is implementation dependent and therefore
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// doesn't result in the expected value on all platforms. This function woks
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// around that limitation by converting to a 32-bit signed integer first and
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// then to a 32-bit unsigned integer which results in the expected behavior on
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// all platforms.
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func testVecF64ToUint32(f float64) uint32 {
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return uint32(int32(f))
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}
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// TestTxInvalidTests ensures all of the tests in tx_invalid.json fail as
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// expected.
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func TestTxInvalidTests(t *testing.T) {
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file, err := ioutil.ReadFile("data/tx_invalid.json")
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if err != nil {
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t.Errorf("TestTxInvalidTests: %v\n", err)
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return
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}
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var tests [][]interface{}
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err = json.Unmarshal(file, &tests)
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if err != nil {
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t.Errorf("TestTxInvalidTests couldn't Unmarshal: %v\n", err)
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return
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}
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// form is either:
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// ["this is a comment "]
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// or:
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// [[[previous hash, previous index, previous scriptPubKey]...,]
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// serializedTransaction, verifyFlags]
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testloop:
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for i, test := range tests {
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inputs, ok := test[0].([]interface{})
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if !ok {
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continue
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}
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if len(test) != 3 {
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t.Errorf("bad test (bad length) %d: %v", i, test)
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continue
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}
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serializedhex, ok := test[1].(string)
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if !ok {
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t.Errorf("bad test (arg 2 not string) %d: %v", i, test)
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continue
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}
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serializedTx, err := hex.DecodeString(serializedhex)
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if err != nil {
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t.Errorf("bad test (arg 2 not hex %v) %d: %v", err, i,
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test)
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continue
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}
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tx, err := btcutil.NewTxFromBytes(serializedTx)
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if err != nil {
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t.Errorf("bad test (arg 2 not msgtx %v) %d: %v", err,
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i, test)
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continue
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}
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verifyFlags, ok := test[2].(string)
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if !ok {
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t.Errorf("bad test (arg 3 not string) %d: %v", i, test)
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continue
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}
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flags, err := parseScriptFlags(verifyFlags)
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if err != nil {
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t.Errorf("bad test %d: %v", i, err)
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continue
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}
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prevOuts := make(map[wire.OutPoint][]byte)
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for j, iinput := range inputs {
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input, ok := iinput.([]interface{})
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if !ok {
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t.Errorf("bad test (%dth input not array)"+
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"%d: %v", j, i, test)
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continue testloop
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}
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if len(input) != 3 {
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t.Errorf("bad test (%dth input wrong length)"+
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"%d: %v", j, i, test)
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continue testloop
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}
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previoustx, ok := input[0].(string)
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if !ok {
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t.Errorf("bad test (%dth input hash not string)"+
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"%d: %v", j, i, test)
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continue testloop
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}
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prevhash, err := chainhash.NewHashFromStr(previoustx)
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if err != nil {
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t.Errorf("bad test (%dth input hash not hash %v)"+
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"%d: %v", j, err, i, test)
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continue testloop
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}
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idxf, ok := input[1].(float64)
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if !ok {
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t.Errorf("bad test (%dth input idx not number)"+
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"%d: %v", j, i, test)
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continue testloop
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}
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idx := testVecF64ToUint32(idxf)
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oscript, ok := input[2].(string)
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if !ok {
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t.Errorf("bad test (%dth input script not "+
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"string) %d: %v", j, i, test)
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continue testloop
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}
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script, err := parseShortForm(oscript)
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if err != nil {
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t.Errorf("bad test (%dth input script doesn't "+
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"parse %v) %d: %v", j, err, i, test)
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continue testloop
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}
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prevOuts[*wire.NewOutPoint(prevhash, idx)] = script
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}
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for k, txin := range tx.MsgTx().TxIn {
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pkScript, ok := prevOuts[txin.PreviousOutPoint]
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if !ok {
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t.Errorf("bad test (missing %dth input) %d:%v",
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k, i, test)
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continue testloop
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}
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// These are meant to fail, so as soon as the first
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// input fails the transaction has failed. (some of the
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// test txns have good inputs, too..
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vm, err := NewEngine(pkScript, tx.MsgTx(), k, flags, nil)
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if err != nil {
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continue testloop
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}
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err = vm.Execute()
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if err != nil {
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continue testloop
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}
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}
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t.Errorf("test (%d:%v) succeeded when should fail",
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i, test)
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}
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}
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// TestTxValidTests ensures all of the tests in tx_valid.json pass as expected.
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func TestTxValidTests(t *testing.T) {
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file, err := ioutil.ReadFile("data/tx_valid.json")
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if err != nil {
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t.Errorf("TestTxValidTests: %v\n", err)
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return
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}
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var tests [][]interface{}
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err = json.Unmarshal(file, &tests)
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if err != nil {
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t.Errorf("TestTxValidTests couldn't Unmarshal: %v\n", err)
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return
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}
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|
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// form is either:
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// ["this is a comment "]
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// or:
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// [[[previous hash, previous index, previous scriptPubKey]...,]
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// serializedTransaction, verifyFlags]
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testloop:
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for i, test := range tests {
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inputs, ok := test[0].([]interface{})
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if !ok {
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continue
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}
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if len(test) != 3 {
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t.Errorf("bad test (bad length) %d: %v", i, test)
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continue
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}
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serializedhex, ok := test[1].(string)
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if !ok {
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t.Errorf("bad test (arg 2 not string) %d: %v", i, test)
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continue
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}
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serializedTx, err := hex.DecodeString(serializedhex)
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if err != nil {
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t.Errorf("bad test (arg 2 not hex %v) %d: %v", err, i,
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test)
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continue
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}
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tx, err := btcutil.NewTxFromBytes(serializedTx)
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if err != nil {
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t.Errorf("bad test (arg 2 not msgtx %v) %d: %v", err,
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i, test)
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continue
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}
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|
|
verifyFlags, ok := test[2].(string)
|
|
if !ok {
|
|
t.Errorf("bad test (arg 3 not string) %d: %v", i, test)
|
|
continue
|
|
}
|
|
|
|
flags, err := parseScriptFlags(verifyFlags)
|
|
if err != nil {
|
|
t.Errorf("bad test %d: %v", i, err)
|
|
continue
|
|
}
|
|
|
|
prevOuts := make(map[wire.OutPoint][]byte)
|
|
for j, iinput := range inputs {
|
|
input, ok := iinput.([]interface{})
|
|
if !ok {
|
|
t.Errorf("bad test (%dth input not array)"+
|
|
"%d: %v", j, i, test)
|
|
continue
|
|
}
|
|
|
|
if len(input) != 3 {
|
|
t.Errorf("bad test (%dth input wrong length)"+
|
|
"%d: %v", j, i, test)
|
|
continue
|
|
}
|
|
|
|
previoustx, ok := input[0].(string)
|
|
if !ok {
|
|
t.Errorf("bad test (%dth input hash not string)"+
|
|
"%d: %v", j, i, test)
|
|
continue
|
|
}
|
|
|
|
prevhash, err := chainhash.NewHashFromStr(previoustx)
|
|
if err != nil {
|
|
t.Errorf("bad test (%dth input hash not hash %v)"+
|
|
"%d: %v", j, err, i, test)
|
|
continue
|
|
}
|
|
|
|
idxf, ok := input[1].(float64)
|
|
if !ok {
|
|
t.Errorf("bad test (%dth input idx not number)"+
|
|
"%d: %v", j, i, test)
|
|
continue
|
|
}
|
|
idx := testVecF64ToUint32(idxf)
|
|
|
|
oscript, ok := input[2].(string)
|
|
if !ok {
|
|
t.Errorf("bad test (%dth input script not "+
|
|
"string) %d: %v", j, i, test)
|
|
continue
|
|
}
|
|
|
|
script, err := parseShortForm(oscript)
|
|
if err != nil {
|
|
t.Errorf("bad test (%dth input script doesn't "+
|
|
"parse %v) %d: %v", j, err, i, test)
|
|
continue
|
|
}
|
|
|
|
prevOuts[*wire.NewOutPoint(prevhash, idx)] = script
|
|
}
|
|
|
|
for k, txin := range tx.MsgTx().TxIn {
|
|
pkScript, ok := prevOuts[txin.PreviousOutPoint]
|
|
if !ok {
|
|
t.Errorf("bad test (missing %dth input) %d:%v",
|
|
k, i, test)
|
|
continue testloop
|
|
}
|
|
vm, err := NewEngine(pkScript, tx.MsgTx(), k, flags, nil)
|
|
if err != nil {
|
|
t.Errorf("test (%d:%v:%d) failed to create "+
|
|
"script: %v", i, test, k, err)
|
|
continue
|
|
}
|
|
|
|
err = vm.Execute()
|
|
if err != nil {
|
|
t.Errorf("test (%d:%v:%d) failed to execute: "+
|
|
"%v", i, test, k, err)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestCalcSignatureHash runs the Bitcoin Core signature hash calculation tests
|
|
// in sighash.json.
|
|
// https://github.com/bitcoin/bitcoin/blob/master/src/test/data/sighash.json
|
|
func TestCalcSignatureHash(t *testing.T) {
|
|
file, err := ioutil.ReadFile("data/sighash.json")
|
|
if err != nil {
|
|
t.Errorf("TestCalcSignatureHash: %v\n", err)
|
|
return
|
|
}
|
|
|
|
var tests [][]interface{}
|
|
err = json.Unmarshal(file, &tests)
|
|
if err != nil {
|
|
t.Errorf("TestCalcSignatureHash couldn't Unmarshal: %v\n",
|
|
err)
|
|
return
|
|
}
|
|
|
|
for i, test := range tests {
|
|
if i == 0 {
|
|
// Skip first line -- contains comments only.
|
|
continue
|
|
}
|
|
if len(test) != 5 {
|
|
t.Fatalf("TestCalcSignatureHash: Test #%d has "+
|
|
"wrong length.", i)
|
|
}
|
|
tx := wire.NewMsgTx()
|
|
rawTx, _ := hex.DecodeString(test[0].(string))
|
|
err := tx.Deserialize(bytes.NewReader(rawTx))
|
|
if err != nil {
|
|
t.Errorf("TestCalcSignatureHash failed test #%d: "+
|
|
"Failed to parse transaction: %v", i, err)
|
|
continue
|
|
}
|
|
|
|
subScript, _ := hex.DecodeString(test[1].(string))
|
|
parsedScript, err := TstParseScript(subScript)
|
|
if err != nil {
|
|
t.Errorf("TestCalcSignatureHash failed test #%d: "+
|
|
"Failed to parse sub-script: %v", i, err)
|
|
continue
|
|
}
|
|
|
|
hashType := SigHashType(testVecF64ToUint32(test[3].(float64)))
|
|
hash := TstCalcSignatureHash(parsedScript, hashType, tx,
|
|
int(test[2].(float64)))
|
|
|
|
expectedHash, _ := chainhash.NewHashFromStr(test[4].(string))
|
|
if !bytes.Equal(hash, expectedHash[:]) {
|
|
t.Errorf("TestCalcSignatureHash failed test #%d: "+
|
|
"Signature hash mismatch.", i)
|
|
}
|
|
}
|
|
}
|