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update isStandardProgram.

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This commit is contained in:
Christopher Jeffrey 2016-04-20 04:20:25 -07:00
parent 6dd5b936ef
commit fcf5af802e
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GPG Key ID: 8962AB9DE6666BBD
1 changed files with 15 additions and 19 deletions
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34
lib/bcoin/script.js
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@ -2379,34 +2379,30 @@ Script.prototype.isStandard = function isStandard() {
*/
Script.prototype.isStandardProgram = function isStandardProgram(witness, flags) {
var program, witnessScript, i;
var program = this.getWitnessProgram();
var i;
assert(program);
assert((flags & constants.flags.VERIFY_WITNESS) !== 0);
assert(this.isWitnessProgram());
program = this.getWitnessProgram();
if (!program.type)
return false;
if (program.version > 0) {
if (program.version === 0) {
if (program.data.length === 32) {
if (witness.items.length === 0)
return false;
} else if (program.data.length === 20) {
if (witness.items.length !== 2)
return false;
} else {
return false;
}
} else {
if (flags & constants.flags.VERIFY_DISCOURAGE_UPGRADABLE_WITNESS_PROGRAM)
return false;
return true;
}
if (program.type === 'witnesspubkeyhash') {
if (witness.items.length !== 2)
return false;
} else if (program.type === 'witnessscripthash') {
if (witness.items.length === 0)
return false;
} else {
assert(false);
}
for (i = 0; i < witness.items.length; i++) {
if (witness.items[i].length > constants.script.MAX_SIZE)
if (witness.items[i].length > constants.script.MAX_PUSH)
return false;
}