liquidjs-lib
Version:
Client-side Liquid JavaScript library
293 lines (292 loc) • 9.87 kB
JavaScript
;
var __createBinding =
(this && this.__createBinding) ||
(Object.create
? function (o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (
!desc ||
('get' in desc ? !m.__esModule : desc.writable || desc.configurable)
) {
desc = {
enumerable: true,
get: function () {
return m[k];
},
};
}
Object.defineProperty(o, k2, desc);
}
: function (o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
});
var __setModuleDefault =
(this && this.__setModuleDefault) ||
(Object.create
? function (o, v) {
Object.defineProperty(o, 'default', { enumerable: true, value: v });
}
: function (o, v) {
o['default'] = v;
});
var __importStar =
(this && this.__importStar) ||
function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null)
for (var k in mod)
if (k !== 'default' && Object.prototype.hasOwnProperty.call(mod, k))
__createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, '__esModule', { value: true });
exports.p2sh = void 0;
const bcrypto = __importStar(require('../crypto'));
const networks_1 = require('../networks');
const bscript = __importStar(require('../script'));
const types_1 = require('../types');
const lazy = __importStar(require('./lazy'));
const bs58check = __importStar(require('bs58check'));
const OPS = bscript.OPS;
function stacksEqual(a, b) {
if (a.length !== b.length) return false;
return a.every((x, i) => {
return x.equals(b[i]);
});
}
// input: [redeemScriptSig ...] {redeemScript}
// witness: <?>
// output: OP_HASH160 {hash160(redeemScript)} OP_EQUAL
function p2sh(a, opts) {
if (
!a.address &&
!a.hash &&
!a.output &&
!a.redeem &&
!a.input &&
!a.confidentialAddress
)
throw new TypeError('Not enough data');
opts = Object.assign({ validate: true }, opts || {});
(0, types_1.typeforce)(
{
network: types_1.typeforce.maybe(types_1.typeforce.Object),
address: types_1.typeforce.maybe(types_1.typeforce.String),
hash: types_1.typeforce.maybe(types_1.typeforce.BufferN(20)),
output: types_1.typeforce.maybe(types_1.typeforce.BufferN(23)),
redeem: types_1.typeforce.maybe({
network: types_1.typeforce.maybe(types_1.typeforce.Object),
output: types_1.typeforce.maybe(types_1.typeforce.Buffer),
input: types_1.typeforce.maybe(types_1.typeforce.Buffer),
witness: types_1.typeforce.maybe(
types_1.typeforce.arrayOf(types_1.typeforce.Buffer),
),
}),
input: types_1.typeforce.maybe(types_1.typeforce.Buffer),
witness: types_1.typeforce.maybe(
types_1.typeforce.arrayOf(types_1.typeforce.Buffer),
),
blindkey: types_1.typeforce.maybe(types_1.isPoint),
confidentialAddress: types_1.typeforce.maybe(types_1.typeforce.String),
},
a,
);
let network = a.network;
if (!network) {
network = (a.redeem && a.redeem.network) || networks_1.liquid;
}
const o = { network };
const _address = lazy.value(() => {
const payload = bs58check.decode(a.address);
const version = payload.readUInt8(0);
const hash = payload.slice(1);
return { version, hash };
});
const _chunks = lazy.value(() => {
return bscript.decompile(a.input);
});
const _redeem = lazy.value(() => {
const chunks = _chunks();
return {
network,
output: chunks[chunks.length - 1],
input: bscript.compile(chunks.slice(0, -1)),
witness: a.witness || [],
};
});
const _confidentialAddress = lazy.value(() => {
const payload = bs58check.decode(a.confidentialAddress);
const blindkey = payload.slice(2, 35);
const unconfidentialAddressBuffer = Buffer.concat([
Buffer.from([payload.readUInt8(1)]),
payload.slice(35),
]);
const unconfidentialAddress = bs58check.encode(unconfidentialAddressBuffer);
return { blindkey, unconfidentialAddress };
});
// output dependents
lazy.prop(o, 'address', () => {
if (!o.hash) return;
const payload = Buffer.allocUnsafe(21);
payload.writeUInt8(o.network.scriptHash, 0);
o.hash.copy(payload, 1);
return bs58check.encode(payload);
});
lazy.prop(o, 'hash', () => {
// in order of least effort
if (a.output) return a.output.slice(2, 22);
if (a.address) return _address().hash;
if (o.redeem && o.redeem.output) return bcrypto.hash160(o.redeem.output);
if (a.confidentialAddress) {
const address = _confidentialAddress().unconfidentialAddress;
return bs58check.decode(address).slice(1);
}
});
lazy.prop(o, 'output', () => {
if (!o.hash) return;
return bscript.compile([OPS.OP_HASH160, o.hash, OPS.OP_EQUAL]);
});
// input dependents
lazy.prop(o, 'redeem', () => {
if (!a.input) return;
return _redeem();
});
lazy.prop(o, 'input', () => {
if (!a.redeem || !a.redeem.input || !a.redeem.output) return;
return bscript.compile(
[].concat(bscript.decompile(a.redeem.input), a.redeem.output),
);
});
lazy.prop(o, 'witness', () => {
if (o.redeem && o.redeem.witness) return o.redeem.witness;
if (o.input) return [];
});
lazy.prop(o, 'name', () => {
const nameParts = ['p2sh'];
if (o.redeem !== undefined && o.redeem.name !== undefined)
nameParts.push(o.redeem.name);
return nameParts.join('-');
});
lazy.prop(o, 'blindkey', () => {
if (a.confidentialAddress) return _confidentialAddress().blindkey;
if (a.blindkey) return a.blindkey;
});
lazy.prop(o, 'confidentialAddress', () => {
if (!o.address) return;
if (!o.blindkey) return;
const payload = bs58check.decode(o.address);
const confidentialAddress = Buffer.concat([
Buffer.from([network.confidentialPrefix, payload.readUInt8(0)]),
o.blindkey,
Buffer.from(payload.slice(1)),
]);
return bs58check.encode(confidentialAddress);
});
if (opts.validate) {
let hash = Buffer.from([]);
let blindkey = Buffer.from([]);
if (a.address) {
if (_address().version !== network.scriptHash)
throw new TypeError('Invalid version or Network mismatch');
if (_address().hash.length !== 20) throw new TypeError('Invalid address');
hash = _address().hash;
}
if (a.hash) {
if (hash.length > 0 && !hash.equals(a.hash))
throw new TypeError('Hash mismatch');
else hash = a.hash;
}
if (a.output) {
if (
a.output.length !== 23 ||
a.output[0] !== OPS.OP_HASH160 ||
a.output[1] !== 0x14 ||
a.output[22] !== OPS.OP_EQUAL
)
throw new TypeError('Output is invalid');
const hash2 = a.output.slice(2, 22);
if (hash.length > 0 && !hash.equals(hash2))
throw new TypeError('Hash mismatch');
else hash = hash2;
}
// inlined to prevent 'no-inner-declarations' failing
const checkRedeem = (redeem) => {
// is the redeem output empty/invalid?
if (redeem.output) {
const decompile = bscript.decompile(redeem.output);
if (!decompile || decompile.length < 1)
throw new TypeError('Redeem.output too short');
// match hash against other sources
const hash2 = bcrypto.hash160(redeem.output);
if (hash.length > 0 && !hash.equals(hash2))
throw new TypeError('Hash mismatch');
else hash = hash2;
}
if (redeem.input) {
const hasInput = redeem.input.length > 0;
const hasWitness = redeem.witness && redeem.witness.length > 0;
if (!hasInput && !hasWitness) throw new TypeError('Empty input');
if (hasInput && hasWitness)
throw new TypeError('Input and witness provided');
if (hasInput) {
const richunks = bscript.decompile(redeem.input);
if (!bscript.isPushOnly(richunks))
throw new TypeError('Non push-only scriptSig');
}
}
};
if (a.input) {
const chunks = _chunks();
if (!chunks || chunks.length < 1) throw new TypeError('Input too short');
if (!Buffer.isBuffer(_redeem().output))
throw new TypeError('Input is invalid');
checkRedeem(_redeem());
}
if (a.redeem) {
if (a.redeem.network && a.redeem.network !== network)
throw new TypeError('Network mismatch');
if (a.input) {
const redeem = _redeem();
if (a.redeem.output && !a.redeem.output.equals(redeem.output))
throw new TypeError('Redeem.output mismatch');
if (a.redeem.input && !a.redeem.input.equals(redeem.input))
throw new TypeError('Redeem.input mismatch');
}
checkRedeem(a.redeem);
}
if (a.witness) {
if (
a.redeem &&
a.redeem.witness &&
!stacksEqual(a.redeem.witness, a.witness)
)
throw new TypeError('Witness and redeem.witness mismatch');
}
if (a.confidentialAddress) {
if (
a.address &&
a.address !== _confidentialAddress().unconfidentialAddress
)
throw new TypeError('Address mismatch');
if (
blindkey.length > 0 &&
!blindkey.equals(_confidentialAddress().blindkey)
)
throw new TypeError('Blindkey mismatch');
else blindkey = _confidentialAddress().blindkey;
}
if (a.blindkey) {
if (!(0, types_1.isPoint)(a.blindkey))
throw new TypeError('Blindkey is invalid');
if (blindkey.length > 0 && !blindkey.equals(a.blindkey))
throw new TypeError('Blindkey mismatch');
else blindkey = a.blindkey;
}
}
return Object.assign(o, a);
}
exports.p2sh = p2sh;