liquidjs-lib
Version:
Client-side Liquid JavaScript library
195 lines (194 loc) • 6.1 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.p2ms = void 0;
const networks_1 = require('../networks');
const bscript = __importStar(require('../script'));
const types_1 = require('../types');
const lazy = __importStar(require('./lazy'));
const OPS = bscript.OPS;
const OP_INT_BASE = OPS.OP_RESERVED; // OP_1 - 1
function stacksEqual(a, b) {
if (a.length !== b.length) return false;
return a.every((x, i) => {
return x.equals(b[i]);
});
}
// input: OP_0 [signatures ...]
// output: m [pubKeys ...] n OP_CHECKMULTISIG
function p2ms(a, opts) {
if (
!a.input &&
!a.output &&
!(a.pubkeys && a.m !== undefined) &&
!a.signatures
)
throw new TypeError('Not enough data');
opts = Object.assign({ validate: true }, opts || {});
function isAcceptableSignature(x) {
return (
bscript.isCanonicalScriptSignature(x) ||
(opts.allowIncomplete && x === OPS.OP_0) !== undefined
);
}
(0, types_1.typeforce)(
{
network: types_1.typeforce.maybe(types_1.typeforce.Object),
m: types_1.typeforce.maybe(types_1.typeforce.Number),
n: types_1.typeforce.maybe(types_1.typeforce.Number),
output: types_1.typeforce.maybe(types_1.typeforce.Buffer),
pubkeys: types_1.typeforce.maybe(
types_1.typeforce.arrayOf(types_1.isPoint),
),
signatures: types_1.typeforce.maybe(
types_1.typeforce.arrayOf(isAcceptableSignature),
),
input: types_1.typeforce.maybe(types_1.typeforce.Buffer),
},
a,
);
const network = a.network || networks_1.liquid;
const o = { network };
let chunks = [];
let decoded = false;
function decode(output) {
if (decoded) return;
decoded = true;
chunks = bscript.decompile(output);
o.m = chunks[0] - OP_INT_BASE;
o.n = chunks[chunks.length - 2] - OP_INT_BASE;
o.pubkeys = chunks.slice(1, -2);
}
lazy.prop(o, 'output', () => {
if (!a.m) return;
if (!o.n) return;
if (!a.pubkeys) return;
return bscript.compile(
[].concat(
OP_INT_BASE + a.m,
a.pubkeys,
OP_INT_BASE + o.n,
OPS.OP_CHECKMULTISIG,
),
);
});
lazy.prop(o, 'm', () => {
if (!o.output) return;
decode(o.output);
return o.m;
});
lazy.prop(o, 'n', () => {
if (!o.pubkeys) return;
return o.pubkeys.length;
});
lazy.prop(o, 'pubkeys', () => {
if (!a.output) return;
decode(a.output);
return o.pubkeys;
});
lazy.prop(o, 'signatures', () => {
if (!a.input) return;
return bscript.decompile(a.input).slice(1);
});
lazy.prop(o, 'input', () => {
if (!a.signatures) return;
return bscript.compile([OPS.OP_0].concat(a.signatures));
});
lazy.prop(o, 'witness', () => {
if (!o.input) return;
return [];
});
lazy.prop(o, 'name', () => {
if (!o.m || !o.n) return;
return `p2ms(${o.m} of ${o.n})`;
});
// extended validation
if (opts.validate) {
if (a.output) {
decode(a.output);
if (!types_1.typeforce.Number(chunks[0]))
throw new TypeError('Output is invalid');
if (!types_1.typeforce.Number(chunks[chunks.length - 2]))
throw new TypeError('Output is invalid');
if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG)
throw new TypeError('Output is invalid');
if (o.m <= 0 || o.n > 16 || o.m > o.n || o.n !== chunks.length - 3)
throw new TypeError('Output is invalid');
if (!o.pubkeys.every((x) => (0, types_1.isPoint)(x)))
throw new TypeError('Output is invalid');
if (a.m !== undefined && a.m !== o.m) throw new TypeError('m mismatch');
if (a.n !== undefined && a.n !== o.n) throw new TypeError('n mismatch');
if (a.pubkeys && !stacksEqual(a.pubkeys, o.pubkeys))
throw new TypeError('Pubkeys mismatch');
}
if (a.pubkeys) {
if (a.n !== undefined && a.n !== a.pubkeys.length)
throw new TypeError('Pubkey count mismatch');
o.n = a.pubkeys.length;
if (o.n < o.m) throw new TypeError('Pubkey count cannot be less than m');
}
if (a.signatures) {
if (a.signatures.length < o.m)
throw new TypeError('Not enough signatures provided');
if (a.signatures.length > o.m)
throw new TypeError('Too many signatures provided');
}
if (a.input) {
if (a.input[0] !== OPS.OP_0) throw new TypeError('Input is invalid');
if (
o.signatures.length === 0 ||
!o.signatures.every(isAcceptableSignature)
)
throw new TypeError('Input has invalid signature(s)');
if (a.signatures && !stacksEqual(a.signatures, o.signatures))
throw new TypeError('Signature mismatch');
if (a.m !== undefined && a.m !== a.signatures.length)
throw new TypeError('Signature count mismatch');
}
}
return Object.assign(o, a);
}
exports.p2ms = p2ms;