217 lines
7.2 KiB
Go
217 lines
7.2 KiB
Go
// Copyright (c) 2013-2017 The btcsuite developers
|
|
// Use of this source code is governed by an ISC
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package txscript
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
// TestOpcodeDisabled tests the opcodeDisabled function manually because all
|
|
// disabled opcodes result in a script execution failure when executed normally,
|
|
// so the function is not called under normal circumstances.
|
|
func TestOpcodeDisabled(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
tests := []byte{OP_CAT, OP_SUBSTR, OP_LEFT, OP_RIGHT, OP_INVERT,
|
|
OP_AND, OP_OR, OP_2MUL, OP_2DIV, OP_MUL, OP_DIV, OP_MOD,
|
|
OP_LSHIFT, OP_RSHIFT,
|
|
}
|
|
for _, opcodeVal := range tests {
|
|
pop := parsedOpcode{opcode: &opcodeArray[opcodeVal], data: nil}
|
|
err := opcodeDisabled(&pop, nil)
|
|
if !IsErrorCode(err, ErrDisabledOpcode) {
|
|
t.Errorf("opcodeDisabled: unexpected error - got %v, "+
|
|
"want %v", err, ErrDisabledOpcode)
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestOpcodeDisasm tests the print function for all opcodes in both the oneline
|
|
// and full modes to ensure it provides the expected disassembly.
|
|
func TestOpcodeDisasm(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// First, test the oneline disassembly.
|
|
|
|
// The expected strings for the data push opcodes are replaced in the
|
|
// test loops below since they involve repeating bytes. Also, the
|
|
// OP_NOP# and OP_UNKNOWN# are replaced below too, since it's easier
|
|
// than manually listing them here.
|
|
oneBytes := []byte{0x01}
|
|
oneStr := "01"
|
|
expectedStrings := [256]string{0x00: "0", 0x4f: "-1",
|
|
0x50: "OP_RESERVED", 0x61: "OP_NOP", 0x62: "OP_VER",
|
|
0x63: "OP_IF", 0x64: "OP_NOTIF", 0x65: "OP_VERIF",
|
|
0x66: "OP_VERNOTIF", 0x67: "OP_ELSE", 0x68: "OP_ENDIF",
|
|
0x69: "OP_VERIFY", 0x6a: "OP_RETURN", 0x6b: "OP_TOALTSTACK",
|
|
0x6c: "OP_FROMALTSTACK", 0x6d: "OP_2DROP", 0x6e: "OP_2DUP",
|
|
0x6f: "OP_3DUP", 0x70: "OP_2OVER", 0x71: "OP_2ROT",
|
|
0x72: "OP_2SWAP", 0x73: "OP_IFDUP", 0x74: "OP_DEPTH",
|
|
0x75: "OP_DROP", 0x76: "OP_DUP", 0x77: "OP_NIP",
|
|
0x78: "OP_OVER", 0x79: "OP_PICK", 0x7a: "OP_ROLL",
|
|
0x7b: "OP_ROT", 0x7c: "OP_SWAP", 0x7d: "OP_TUCK",
|
|
0x7e: "OP_CAT", 0x7f: "OP_SUBSTR", 0x80: "OP_LEFT",
|
|
0x81: "OP_RIGHT", 0x82: "OP_SIZE", 0x83: "OP_INVERT",
|
|
0x84: "OP_AND", 0x85: "OP_OR", 0x86: "OP_XOR",
|
|
0x87: "OP_EQUAL", 0x88: "OP_EQUALVERIFY", 0x89: "OP_RESERVED1",
|
|
0x8a: "OP_RESERVED2", 0x8b: "OP_1ADD", 0x8c: "OP_1SUB",
|
|
0x8d: "OP_2MUL", 0x8e: "OP_2DIV", 0x8f: "OP_NEGATE",
|
|
0x90: "OP_ABS", 0x91: "OP_NOT", 0x92: "OP_0NOTEQUAL",
|
|
0x93: "OP_ADD", 0x94: "OP_SUB", 0x95: "OP_MUL", 0x96: "OP_DIV",
|
|
0x97: "OP_MOD", 0x98: "OP_LSHIFT", 0x99: "OP_RSHIFT",
|
|
0x9a: "OP_BOOLAND", 0x9b: "OP_BOOLOR", 0x9c: "OP_NUMEQUAL",
|
|
0x9d: "OP_NUMEQUALVERIFY", 0x9e: "OP_NUMNOTEQUAL",
|
|
0x9f: "OP_LESSTHAN", 0xa0: "OP_GREATERTHAN",
|
|
0xa1: "OP_LESSTHANOREQUAL", 0xa2: "OP_GREATERTHANOREQUAL",
|
|
0xa3: "OP_MIN", 0xa4: "OP_MAX", 0xa5: "OP_WITHIN",
|
|
0xa6: "OP_RIPEMD160", 0xa7: "OP_SHA1", 0xa8: "OP_SHA256",
|
|
0xa9: "OP_HASH160", 0xaa: "OP_HASH256", 0xab: "OP_CODESEPARATOR",
|
|
0xac: "OP_CHECKSIG", 0xad: "OP_CHECKSIGVERIFY",
|
|
0xae: "OP_CHECKMULTISIG", 0xaf: "OP_CHECKMULTISIGVERIFY",
|
|
0xfa: "OP_SMALLINTEGER", 0xfb: "OP_PUBKEYS",
|
|
0xfd: "OP_PUBKEYHASH", 0xfe: "OP_PUBKEY",
|
|
0xff: "OP_INVALIDOPCODE",
|
|
}
|
|
for opcodeVal, expectedStr := range expectedStrings {
|
|
var data []byte
|
|
switch {
|
|
// OP_DATA_1 through OP_DATA_65 display the pushed data.
|
|
case opcodeVal >= 0x01 && opcodeVal < 0x4c:
|
|
data = bytes.Repeat(oneBytes, opcodeVal)
|
|
expectedStr = strings.Repeat(oneStr, opcodeVal)
|
|
|
|
// OP_PUSHDATA1.
|
|
case opcodeVal == 0x4c:
|
|
data = bytes.Repeat(oneBytes, 1)
|
|
expectedStr = strings.Repeat(oneStr, 1)
|
|
|
|
// OP_PUSHDATA2.
|
|
case opcodeVal == 0x4d:
|
|
data = bytes.Repeat(oneBytes, 2)
|
|
expectedStr = strings.Repeat(oneStr, 2)
|
|
|
|
// OP_PUSHDATA4.
|
|
case opcodeVal == 0x4e:
|
|
data = bytes.Repeat(oneBytes, 3)
|
|
expectedStr = strings.Repeat(oneStr, 3)
|
|
|
|
// OP_1 through OP_16 display the numbers themselves.
|
|
case opcodeVal >= 0x51 && opcodeVal <= 0x60:
|
|
val := byte(opcodeVal - (0x51 - 1))
|
|
data = []byte{val}
|
|
expectedStr = strconv.Itoa(int(val))
|
|
|
|
// OP_NOP1 through OP_NOP10.
|
|
case opcodeVal >= 0xb0 && opcodeVal <= 0xb9:
|
|
switch opcodeVal {
|
|
case 0xb1:
|
|
// OP_NOP2 is an alias of OP_CHECKLOCKTIMEVERIFY
|
|
expectedStr = "OP_CHECKLOCKTIMEVERIFY"
|
|
case 0xb2:
|
|
// OP_NOP3 is an alias of OP_CHECKSEQUENCEVERIFY
|
|
expectedStr = "OP_CHECKSEQUENCEVERIFY"
|
|
case OP_CLAIMNAME:
|
|
expectedStr = "OP_CLAIMNAME"
|
|
case OP_SUPPORTCLAIM:
|
|
expectedStr = "OP_SUPPORTCLAIM"
|
|
case OP_UPDATECLAIM:
|
|
expectedStr = "OP_UPDATECLAIM"
|
|
default:
|
|
val := byte(opcodeVal - (0xb0 - 1))
|
|
expectedStr = "OP_NOP" + strconv.Itoa(int(val))
|
|
}
|
|
|
|
// OP_UNKNOWN#.
|
|
case opcodeVal >= 0xba && opcodeVal <= 0xf9 || opcodeVal == 0xfc:
|
|
expectedStr = "OP_UNKNOWN" + strconv.Itoa(opcodeVal)
|
|
}
|
|
|
|
pop := parsedOpcode{opcode: &opcodeArray[opcodeVal], data: data}
|
|
gotStr := pop.print(true)
|
|
if gotStr != expectedStr {
|
|
t.Errorf("pop.print (opcode %x): Unexpected disasm "+
|
|
"string - got %v, want %v", opcodeVal, gotStr,
|
|
expectedStr)
|
|
continue
|
|
}
|
|
}
|
|
|
|
// Now, replace the relevant fields and test the full disassembly.
|
|
expectedStrings[0x00] = "OP_0"
|
|
expectedStrings[0x4f] = "OP_1NEGATE"
|
|
for opcodeVal, expectedStr := range expectedStrings {
|
|
var data []byte
|
|
switch {
|
|
// OP_DATA_1 through OP_DATA_65 display the opcode followed by
|
|
// the pushed data.
|
|
case opcodeVal >= 0x01 && opcodeVal < 0x4c:
|
|
data = bytes.Repeat(oneBytes, opcodeVal)
|
|
expectedStr = fmt.Sprintf("OP_DATA_%d 0x%s", opcodeVal,
|
|
strings.Repeat(oneStr, opcodeVal))
|
|
|
|
// OP_PUSHDATA1.
|
|
case opcodeVal == 0x4c:
|
|
data = bytes.Repeat(oneBytes, 1)
|
|
expectedStr = fmt.Sprintf("OP_PUSHDATA1 0x%02x 0x%s",
|
|
len(data), strings.Repeat(oneStr, 1))
|
|
|
|
// OP_PUSHDATA2.
|
|
case opcodeVal == 0x4d:
|
|
data = bytes.Repeat(oneBytes, 2)
|
|
expectedStr = fmt.Sprintf("OP_PUSHDATA2 0x%04x 0x%s",
|
|
len(data), strings.Repeat(oneStr, 2))
|
|
|
|
// OP_PUSHDATA4.
|
|
case opcodeVal == 0x4e:
|
|
data = bytes.Repeat(oneBytes, 3)
|
|
expectedStr = fmt.Sprintf("OP_PUSHDATA4 0x%08x 0x%s",
|
|
len(data), strings.Repeat(oneStr, 3))
|
|
|
|
// OP_1 through OP_16.
|
|
case opcodeVal >= 0x51 && opcodeVal <= 0x60:
|
|
val := byte(opcodeVal - (0x51 - 1))
|
|
data = []byte{val}
|
|
expectedStr = "OP_" + strconv.Itoa(int(val))
|
|
|
|
// OP_NOP1 through OP_NOP10.
|
|
case opcodeVal >= 0xb0 && opcodeVal <= 0xb9:
|
|
switch opcodeVal {
|
|
case 0xb1:
|
|
// OP_NOP2 is an alias of OP_CHECKLOCKTIMEVERIFY
|
|
expectedStr = "OP_CHECKLOCKTIMEVERIFY"
|
|
case 0xb2:
|
|
// OP_NOP3 is an alias of OP_CHECKSEQUENCEVERIFY
|
|
expectedStr = "OP_CHECKSEQUENCEVERIFY"
|
|
case OP_CLAIMNAME:
|
|
expectedStr = "OP_CLAIMNAME"
|
|
case OP_SUPPORTCLAIM:
|
|
expectedStr = "OP_SUPPORTCLAIM"
|
|
case OP_UPDATECLAIM:
|
|
expectedStr = "OP_UPDATECLAIM"
|
|
default:
|
|
val := byte(opcodeVal - (0xb0 - 1))
|
|
expectedStr = "OP_NOP" + strconv.Itoa(int(val))
|
|
}
|
|
|
|
// OP_UNKNOWN#.
|
|
case opcodeVal >= 0xba && opcodeVal <= 0xf9 || opcodeVal == 0xfc:
|
|
expectedStr = "OP_UNKNOWN" + strconv.Itoa(opcodeVal)
|
|
}
|
|
|
|
pop := parsedOpcode{opcode: &opcodeArray[opcodeVal], data: data}
|
|
gotStr := pop.print(false)
|
|
if gotStr != expectedStr {
|
|
t.Errorf("pop.print (opcode %x): Unexpected disasm "+
|
|
"string - got %v, want %v", opcodeVal, gotStr,
|
|
expectedStr)
|
|
continue
|
|
}
|
|
}
|
|
}
|