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ScriptInterpreter: convert verifyFull() to use callbacks

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This commit is contained in:
Jeff Garzik 2013-08-21 08:42:31 -04:00
parent b6f05a3111
commit 3a29b6e0dd
1 changed files with 67 additions and 41 deletions
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108
ScriptInterpreter.js
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@ -917,60 +917,86 @@ function spec(b) {
return si; return si;
}; };
ScriptInterpreter.verifyFull = function verifyStep4(scriptSig, scriptPubKey, txTo, nIn,
function verifyFull(scriptSig, scriptPubKey, txTo, nIn, hashType, opts) hashType, opts, callback, si, siCopy)
{ {
var si = new ScriptInterpreter(); if (siCopy.stack.length == 0) {
var siCopy = new ScriptInterpreter(); callback(null, false);
return;
var ok = true; }
si.eval(scriptSig, txTo, nIn, hashType, function (err) {
if (err)
ok = false;
});
if (!ok)
return false;
callback(null, castBool(siCopy.stackBack()));
}
function verifyStep3(scriptSig, scriptPubKey, txTo, nIn,
hashType, opts, callback, si, siCopy)
{
if (si.stack.length == 0) {
callback(null, false);
return;
}
if (castBool(si.stackBack()) == false) {
callback(null, false);
return;
}
// if not P2SH, we're done
if (!opts.verifyP2SH || !scriptPubKey.isP2SH()) {
callback(null, true);
return;
}
if (!scriptSig.isPushOnly()) {
callback(null, false);
return;
}
assert.notEqual(siCopy.length, 0);
var subscript = new Script(siCopy.stackPop());
ok = true;
siCopy.eval(subscript, txTo, nIn, hashType, function (err) {
if (err)
callback(err);
else
verifyStep4(scriptSig, scriptPubKey, txTo, nIn,
hashType, opts, callback, si, siCopy);
});
}
function verifyStep2(scriptSig, scriptPubKey, txTo, nIn,
hashType, opts, callback, si, siCopy)
{
if (opts.verifyP2SH) { if (opts.verifyP2SH) {
si.stack.forEach(function(item) { si.stack.forEach(function(item) {
siCopy.stack.push(item); siCopy.stack.push(item);
}); });
} }
ok = true;
si.eval(scriptPubKey, txTo, nIn, hashType, function (err) { si.eval(scriptPubKey, txTo, nIn, hashType, function (err) {
if (err) if (err)
ok = false; callback(err);
else
verifyStep3(scriptSig, scriptPubKey, txTo, nIn,
hashType, opts, callback, si, siCopy);
}); });
if (!ok) }
return false;
if (si.stack.length == 0)
return false;
if (castBool(si.stackBack()) == false) ScriptInterpreter.verifyFull =
return false; function verifyFull(scriptSig, scriptPubKey, txTo, nIn, hashType,
opts, callback)
{
var si = new ScriptInterpreter();
var siCopy = new ScriptInterpreter();
if (opts.verifyP2SH && scriptPubKey.isP2SH()) { si.eval(scriptSig, txTo, nIn, hashType, function (err) {
if (!scriptSig.isPushOnly()) if (err)
return false; callback(err);
else
assert.notEqual(siCopy.length, 0); verifyStep2(scriptSig, scriptPubKey, txTo, nIn,
hashType, opts, callback, si, siCopy);
var subscript = new Script(siCopy.stackPop()); });
ok = true;
siCopy.eval(subscript, txTo, nIn, hashType, function (err) {
if (err)
ok = false;
});
if (!ok)
return false;
if (siCopy.stack.length == 0)
return false;
return castBool(siCopy.stackBack());
}
return true;
}; };
var checkSig = ScriptInterpreter.checkSig = var checkSig = ScriptInterpreter.checkSig =