/**
* @param UtxoView $utxoView
* @param TransactionInterface $tx
* @param Flags $flags
* @return bool
*/
public function check(UtxoView $utxoView, TransactionInterface $tx, Flags $flags)
{
$scripts = [];
foreach ($tx->getInputs() as $input) {
$scripts[] = $utxoView->fetchByInput($input)->getOutput()->getScript()->getHex();
}
return $this->dispatch($tx, $flags, $scripts);
}
/**
* @param UtxoView $utxoView
* @param TransactionInterface $tx
* @param Flags $flags
* @return bool
*/
public function check(UtxoView $utxoView, TransactionInterface $tx, Flags $flags)
{
$result = true;
$consensus = $this->consensus->getConsensus($flags);
for ($i = 0, $c = count($tx->getInputs()); $i < $c; $i++) {
$result &= $consensus->verify($tx, $utxoView->fetchByInput($tx->getInput($i))->getOutput()->getScript(), $i);
}
return $result;
}
/**
* @param UtxoView $view
* @param TransactionInterface $tx
* @param $spendHeight
* @return bool
*/
public function checkContextualInputs(UtxoView $view, TransactionInterface $tx, $spendHeight)
{
$valueIn = 0;
for ($i = 0; $i < count($tx->getInputs()); $i++) {
$utxo = $view->fetchByInput($tx->getInput($i));
/*if ($out->isCoinbase()) {
// todo: cb / height
if ($spendHeight - $out->getHeight() < $this->params->coinbaseMaturityAge()) {
return false;
}
}*/
$value = $utxo->getOutput()->getValue();
$valueIn = $this->math->add($value, $valueIn);
if (!$this->consensus->checkAmount($valueIn) || !$this->consensus->checkAmount($value)) {
throw new \RuntimeException('CheckAmount failed for inputs value');
}
}
$valueOut = 0;
foreach ($tx->getOutputs() as $output) {
$valueOut = $this->math->add($output->getValue(), $valueOut);
if (!$this->consensus->checkAmount($valueOut) || !$this->consensus->checkAmount($output->getValue())) {
throw new \RuntimeException('CheckAmount failed for outputs value');
}
}
if ($this->math->cmp($valueIn, $valueOut) < 0) {
throw new \RuntimeException('Value-in is less than value out');
}
$fee = $this->math->sub($valueIn, $valueOut);
if ($this->math->cmp($fee, 0) < 0) {
throw new \RuntimeException('Fee is less than zero');
}
if (!$this->consensus->checkAmount($fee)) {
throw new \RuntimeException('CheckAmount failed for fee');
}
return true;
}
