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add sorting to Script#buildMutlisigOut()

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This commit is contained in:
Manuel Araoz 2014-12-10 16:46:20 -03:00
parent 63bc625c33
commit ec464681fe
2 changed files with 29 additions and 5 deletions
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16
lib/script.js
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@ -470,12 +470,22 @@ Script.prototype.removeCodeseparators = function() {
* requiring m of those public keys to spend * requiring m of those public keys to spend
* @param {PublicKey[]} pubkeys - list of all public keys controlling the output * @param {PublicKey[]} pubkeys - list of all public keys controlling the output
* @param {number} m - amount of required signatures to spend the output * @param {number} m - amount of required signatures to spend the output
* @param {Object} [opts] - Several options:
* - noSorting: defaults to false, if true, don't sort the given
* public keys before creating the script
*/ */
Script.buildMultisigOut = function(pubkeys, m) { Script.buildMultisigOut = function(pubkeys, m, opts) {
opts = opts || {};
var s = new Script(); var s = new Script();
s.add(Opcode.smallInt(m)); s.add(Opcode.smallInt(m));
for (var i = 0; i < pubkeys.length; i++) { var sorted = pubkeys;
var pubkey = pubkeys[i]; if (!opts.noSorting) {
sorted = _.sortBy(pubkeys, function(pubkey) {
return pubkey.toString('hex');
});
}
for (var i = 0; i < sorted.length; i++) {
var pubkey = sorted[i];
s.add(pubkey.toBuffer()); s.add(pubkey.toBuffer());
} }
s.add(Opcode.smallInt(pubkeys.length)); s.add(Opcode.smallInt(pubkeys.length));

18
test/script.js
View File

@ -400,7 +400,7 @@ describe('Script', function() {
}); });
}); });
describe('#buildMultisigOut', function() { describe.only('#buildMultisigOut', function() {
var pubkey_hexs = [ var pubkey_hexs = [
'022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da', '022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da',
'03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9', '03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9',
@ -409,10 +409,24 @@ describe('Script', function() {
'036a98a36aa7665874b1ba9130bc6d318e52fd3bdb5969532d7fc09bf2476ff842', '036a98a36aa7665874b1ba9130bc6d318e52fd3bdb5969532d7fc09bf2476ff842',
'033aafcbead78c08b0e0aacc1b0cdb40702a7c709b660bebd286e973242127e15b', '033aafcbead78c08b0e0aacc1b0cdb40702a7c709b660bebd286e973242127e15b',
]; ];
var sortkeys = pubkey_hexs.slice(0, 3).map(PublicKey);
it('should create sorted script by default', function() {
var s = Script.buildMultisigOut(sortkeys, 2);
s.toString().should.equal('OP_2 33 0x021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18 33 0x022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da 33 0x03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9 OP_3 OP_CHECKMULTISIG');
s.isMultisigOut().should.equal(true);
});
it('should create unsorted script if specified', function() {
var s = Script.buildMultisigOut(sortkeys, 2);
var u = Script.buildMultisigOut(sortkeys, 2, {
noSorting: true
});
s.toString().should.not.equal(u.toString());
u.toString().should.equal('OP_2 33 0x022df8750480ad5b26950b25c7ba79d3e37d75f640f8e5d9bcd5b150a0f85014da 33 0x03e3818b65bcc73a7d64064106a859cc1a5a728c4345ff0b641209fba0d90de6e9 33 0x021f2f6e1e50cb6a953935c3601284925decd3fd21bc445712576873fb8c6ebc18 OP_3 OP_CHECKMULTISIG');
s.isMultisigOut().should.equal(true);
});
var test_mn = function(m, n) { var test_mn = function(m, n) {
var pubkeys = pubkey_hexs.slice(0, n).map(PublicKey); var pubkeys = pubkey_hexs.slice(0, n).map(PublicKey);
var s = Script.buildMultisigOut(pubkeys, m); var s = Script.buildMultisigOut(pubkeys, m);
should.exist(s);
s.isMultisigOut().should.equal(true); s.isMultisigOut().should.equal(true);
}; };
for (var n = 1; n < 6; n++) { for (var n = 1; n < 6; n++) {