349 lines
9.8 KiB
JavaScript
349 lines
9.8 KiB
JavaScript
var bcoin = require('../')('main');
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var assert = require('assert');
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var Script = bcoin.script;
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var Stack = bcoin.script.stack;
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var utils = bcoin.utils;
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var constants = bcoin.protocol.constants;
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var opcodes = bcoin.protocol.constants.opcodes;
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var scripts = require('./data/script_tests');
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var bn = require('bn.js');
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describe('Script', function() {
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it('should encode/decode script', function() {
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var src = '20' +
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'000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f' +
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'20' +
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'101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f' +
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'ac';
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var decoded = bcoin.script.decode(new Buffer(src, 'hex'));
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assert.equal(decoded.length, 3);
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assert.equal(
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decoded[0].toString('hex'),
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'000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f');
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assert.equal(
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decoded[1].toString('hex'),
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'101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f');
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assert.equal(decoded[2], opcodes.OP_CHECKSIG);
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var dst = bcoin.script.encode(decoded);
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assert.equal(dst.toString('hex'), src);
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});
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it('should encode/decode numbers', function() {
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var script = [ 0, 0x51, 0x52, 0x60 ];
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var encoded = bcoin.script.encode(script);
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var decoded = bcoin.script.decode(encoded);
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assert.deepEqual(decoded, script);
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});
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it('should recognize a P2SH output', function () {
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var hex = 'a91419a7d869032368fd1f1e26e5e73a4ad0e474960e87'
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var decoded = bcoin.script.fromRaw(hex, 'hex');
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assert(decoded.isScripthash())
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});
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it('should recognize a Null Data output', function () {
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var hex = '6a28590c080112220a1b353930632e6f7267282a5f5e294f7665726c6179404f7261636c65103b1a010c'
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var decoded = bcoin.script.fromRaw(hex, 'hex');
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assert(decoded.isNulldata())
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});
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it('should handle if statements correctly', function () {
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var inputScript = new Script([opcodes.OP_1, opcodes.OP_2]);
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var prevOutScript = new Script([
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opcodes.OP_2,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ELSE,
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opcodes.OP_4,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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var stack = new Stack();
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inputScript.execute(stack);
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var res = prevOutScript.execute(stack);
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assert(res);
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assert.deepEqual(stack.slice(), [[1], [3], [5]]);
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var inputScript = new Script([opcodes.OP_1, opcodes.OP_2]);
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var prevOutScript = new Script([
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opcodes.OP_9,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ELSE,
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opcodes.OP_4,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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var stack = new Stack();
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inputScript.execute(stack);
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var res = prevOutScript.execute(stack);
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assert(res);
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assert.deepEqual(stack.slice(), [[1], [4], [5]]);
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var inputScript = new Script([opcodes.OP_1, opcodes.OP_2]);
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var prevOutScript = new Script([
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opcodes.OP_2,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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var stack = new Stack();
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inputScript.execute(stack);
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var res = prevOutScript.execute(stack);
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assert(res);
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assert.deepEqual(stack.slice(), [[1], [3], [5]]);
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var inputScript = new Script([opcodes.OP_1, opcodes.OP_2]);
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var prevOutScript = new Script([
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opcodes.OP_9,
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opcodes.OP_EQUAL,
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opcodes.OP_IF,
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opcodes.OP_3,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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var stack = new Stack();
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inputScript.execute(stack);
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var res = prevOutScript.execute(stack);
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assert(res);
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assert.deepEqual(stack.slice(), [[1], [5]]);
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var inputScript = new Script([opcodes.OP_1, opcodes.OP_2]);
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var prevOutScript = new Script([
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opcodes.OP_9,
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opcodes.OP_EQUAL,
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opcodes.OP_NOTIF,
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opcodes.OP_3,
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opcodes.OP_ENDIF,
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opcodes.OP_5
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]);
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var stack = new Stack();
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inputScript.execute(stack);
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var res = prevOutScript.execute(stack);
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assert(res);
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assert.deepEqual(stack.slice(), [[1], [3], [5]]);
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});
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function success(res, stack) {
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if (!res)
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return false;
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if (stack.length === 0)
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return false;
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if (!bcoin.script.bool(stack.pop()))
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return false;
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return true;
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}
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it('should handle bad size pushes correctly.', function () {
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var err;
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var stack = new bcoin.script.stack();
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var s = bcoin.script.fromString(
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'OP_1 OP_DUP OP_PUSHDATA1'
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);
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assert(utils.equal(s.raw, new Buffer('51764c', 'hex')));
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delete s.raw;
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assert(utils.equal(s.encode(), new Buffer('51764c', 'hex')));
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try {
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s.execute(stack);
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} catch (e) {
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err = e;
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}
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assert(err);
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assert(err.code === 'BAD_OPCODE');
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var s = bcoin.script.fromString(
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'OP_1 OP_DUP OP_PUSHDATA2 0x01'
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);
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assert(utils.equal(s.raw, new Buffer('51764d01', 'hex')));
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delete s.raw;
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assert(utils.equal(s.encode(), new Buffer('51764d01', 'hex')));
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err = null;
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try {
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s.execute(stack);
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} catch (e) {
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err = e;
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}
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assert(err);
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assert(err.code === 'BAD_OPCODE');
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var s = bcoin.script.fromString(
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'OP_1 OP_DUP OP_PUSHDATA4 0x0001'
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);
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assert(utils.equal(s.raw, new Buffer('51764e0001', 'hex')));
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delete s.raw;
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assert(utils.equal(s.encode(), new Buffer('51764e0001', 'hex')));
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err = null;
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try {
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s.execute(stack);
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} catch (e) {
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err = e;
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}
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assert(err);
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assert(err.code === 'BAD_OPCODE');
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var s = bcoin.script.fromString(
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'OP_1 OP_DUP OP_PUSHDATA1 0x02 0x01'
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);
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assert(utils.equal(s.raw, new Buffer('51764c0201', 'hex')));
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delete s.raw;
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assert(utils.equal(s.encode(), new Buffer('51764c0201', 'hex')));
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err = null;
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try {
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s.execute(stack);
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} catch (e) {
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err = e;
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}
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assert(err);
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assert(err.code === 'BAD_OPCODE');
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var s = bcoin.script.fromString(
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'OP_1 OP_DUP OP_PUSHDATA2 0x0200 0x01'
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);
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assert(utils.equal(s.raw, new Buffer('51764d020001', 'hex')));
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delete s.raw;
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assert(utils.equal(s.encode(), new Buffer('51764d020001', 'hex')));
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err = null;
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try {
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s.execute(stack);
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} catch (e) {
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err = e;
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}
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assert(err);
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assert(err.code === 'BAD_OPCODE');
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});
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it('should handle CScriptNums correctly', function () {
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var s = bcoin.script.fromSymbolic([
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new Buffer([0xff, 0xff, 0xff, 0x7f]), 'OP_NEGATE', 'OP_DUP', 'OP_ADD'
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]);
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var s2 = bcoin.script.fromSymbolic([
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new Buffer([0xfe, 0xff, 0xff, 0xff, 0x80]),
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'OP_EQUAL'
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]);
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var stack = new bcoin.script.stack();
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assert(s.execute(stack));
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assert(success(s2.execute(stack), stack));
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});
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it('should handle CScriptNums correctly', function () {
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var s = bcoin.script.fromSymbolic([
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'OP_11', 'OP_10', 'OP_1', 'OP_ADD'
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]);
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var s2 = bcoin.script.fromSymbolic([
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'OP_NUMNOTEQUAL',
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'OP_NOT'
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]);
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var stack = new bcoin.script.stack();
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assert(s.execute(stack));
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assert(success(s2.execute(stack), stack));
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});
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it('should handle OP_ROLL correctly', function () {
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var s = bcoin.script.fromSymbolic([
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new Buffer([0x16]), new Buffer([0x15]), new Buffer([0x14])
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]);
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var s2 = bcoin.script.fromSymbolic([
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'OP_0',
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'OP_ROLL',
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new Buffer([0x14]),
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'OP_EQUALVERIFY',
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'OP_DEPTH',
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'OP_2',
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'OP_EQUAL'
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]);
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var stack = new bcoin.script.stack();
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assert(s.execute(stack));
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assert(success(s2.execute(stack), stack));
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});
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scripts.forEach(function(data) {
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// ["Format is: [[wit...]?, scriptSig, scriptPubKey, flags, expected_scripterror, ... comments]"],
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var witness = Array.isArray(data[0]) ? data.shift() : null;
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var input = data[0] ? data[0].trim() : data[0] || '';
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var output = data[1] ? data[1].trim() : data[1] || '';
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var flags = data[2] ? data[2].trim().split(/,\s*/) : [];
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var expected = data[3] || '';
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var comments = Array.isArray(data[4]) ? data[4].join('. ') : data[4] || '';
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if (data.length === 1)
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return;
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if (!comments)
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comments = output.slice(0, 60);
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comments += ' (' + expected + ')';
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witness = bcoin.witness.fromString(witness);
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input = bcoin.script.fromString(input);
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output = bcoin.script.fromString(output);
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var flag = 0;
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for (var i = 0; i < flags.length; i++) {
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flag |= constants.flags['VERIFY_' + flags[i]];
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}
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flags = flag;
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[false, true].forEach(function(nocache) {
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var suffix = nocache ? ' without cache' : ' with cache';
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it('should handle script test' + suffix + ': ' + comments, function () {
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var coin = bcoin.tx({
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version: 1,
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inputs: [{
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prevout: {
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hash: constants.NULL_HASH,
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index: 0xffffffff
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},
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coin: null,
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script: [bcoin.script.array(0), bcoin.script.array(0)],
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witness: new bcoin.script.witness(),
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sequence: 0xffffffff
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}],
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outputs: [{
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script: output,
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value: new bn(0)
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}],
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locktime: 0
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});
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var tx = bcoin.tx({
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version: 1,
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inputs: [{
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prevout: {
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hash: coin.hash('hex'),
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index: 0
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},
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coin: bcoin.coin(coin, 0),
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script: input,
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witness: witness,
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sequence: 0xffffffff
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}],
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outputs: [{
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script: new bcoin.script(),
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value: new bn(0)
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}],
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locktime: 0
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});
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if (nocache) {
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delete input.raw;
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delete output.raw;
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}
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var err, res;
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try {
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res = Script.verify(input, witness, output, tx, 0, flags);
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} catch (e) {
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err = e;
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}
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if (expected !== 'OK') {
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assert(!res);
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assert(err);
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assert.equal(err.code, expected);
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return;
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}
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utils.assert.ifError(err);
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assert(res);
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});
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});
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});
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});
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