RanchiMall/fcoin
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simplify tbsHash.

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This commit is contained in:
Christopher Jeffrey 2016-01-14 01:01:23 -08:00
parent 8f037ea430
commit ef59dae1b5
1 changed files with 9 additions and 46 deletions
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55
lib/bcoin/tx.js
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@ -72,8 +72,8 @@ TX.prototype.clone = function clone() {
return new TX(this);
};
TX.prototype.hash = function hash(enc) {
var h = utils.dsha256(this.render());
TX.prototype.hash = function hash(enc, force) {
var h = utils.dsha256(this.render(force));
return enc === 'hex' ? utils.toHex(h) : h;
};
@ -653,57 +653,20 @@ TX.prototype.signatureHash = function signatureHash(index, s, type) {
return hash;
};
TX.prototype.tbsHash = function tbsHash(enc) {
TX.prototype.tbsHash = function tbsHash(enc, force) {
var copy = this.clone();
var i, j, input, s, raw, redeem, m;
var i;
if (this.isCoinbase())
return this.hash(enc);
if (this._tbsHash) {
return enc === 'hex'
? utils.toHex(this._tbsHash)
: this._tbsHash.slice();
if (!this._tbsHash || force) {
for (i = 0; i < copy.inputs.length; i++)
copy.inputs[i].script = [];
this._tbsHash = utils.dsha256(copy.render(true));
}
for (i = 0; i < copy.inputs.length; i++) {
input = copy.inputs[i];
input.out.tx = this.inputs[i].out.tx;
assert(input.out.tx);
s = input.script;
redeem = input.out.tx.getSubscript(input.out.index);
if (bcoin.script.isScripthash(redeem)) {
raw = s[s.length - 1];
assert(Array.isArray(raw) && raw.length);
redeem = bcoin.script.subscript(bcoin.script.decode(raw));
} else {
raw = null;
}
if (bcoin.script.isPubkey(redeem)) {
input.script = [[]];
} else if (bcoin.script.isPubkeyhash(redeem)) {
assert(Array.isArray(s[1]) && s[1].length);
input.script = [[], s[1]];
} else if (bcoin.script.isMultisig(redeem)) {
m = s[0];
if (Array.isArray(m))
m = m[0];
input.script = [[]];
for (i = 0; i < m; i++)
input.script.push([]);
} else {
input.script = [];
}
if (raw)
input.script.push(raw);
}
this._tbsHash = utils.dsha256(copy.render(true));
return enc === 'hex'
? utils.toHex(this._tbsHash)
: this._tbsHash.slice();