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<?php |
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namespace BitWasp\Bitcoin\Transaction\Bip69; |
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use BitWasp\Bitcoin\Transaction\TransactionInputInterface; |
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use BitWasp\Bitcoin\Transaction\TransactionInterface; |
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use BitWasp\Bitcoin\Transaction\TransactionOutputInterface; |
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class Bip69 |
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{ |
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/** |
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* @param array $vTxin |
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* @return array |
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*/ |
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public function sortInputs(array $vTxin) |
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{ |
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usort($vTxin, [$this, 'compareInputs']); |
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return $vTxin; |
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} |
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/** |
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* @param TransactionInputInterface $tx1 |
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* @param TransactionInputInterface $tx2 |
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* @return bool |
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*/ |
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public function compareInputs(TransactionInputInterface $tx1, TransactionInputInterface $tx2) |
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{ |
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$outpoint1 = $tx1->getOutPoint(); |
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$outpoint2 = $tx2->getOutPoint(); |
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$txid1 = $outpoint1->getTxId(); |
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$txid2 = $outpoint2->getTxId(); |
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return strcmp($txid1->getBinary(), $txid2->getBinary()) || $outpoint1->getVout() - $outpoint2->getVout(); |
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} |
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/** |
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* @param TransactionOutputInterface[] $vTxout |
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* @return TransactionOutputInterface[] |
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*/ |
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public function sortOutputs($vTxout) |
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{ |
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usort($vTxout, [$this, 'compareOutputs']); |
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return $vTxout; |
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} |
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/** |
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* @param TransactionOutputInterface $tx1 |
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* @param TransactionOutputInterface $tx2 |
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* @return bool |
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*/ |
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public function compareOutputs(TransactionOutputInterface $tx1, TransactionOutputInterface $tx2) |
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{ |
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return $tx1->getValue() - $tx2->getValue() || strcmp($tx1->getScript()->getBinary(), $tx2->getScript()->getBinary()); |
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} |
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/** |
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* @param TransactionInterface $tx |
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* @return bool |
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*/ |
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public function check(TransactionInterface $tx) |
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{ |
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$inputs = $tx->getInputs()->all(); |
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$sortedInputs = $this->sortInputs($inputs); |
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$outputs = $tx->getOutputs()->all(); |
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$sortedOutputs = $this->sortOutputs($outputs); |
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$valid = $sortedInputs === $inputs && $sortedOutputs === $sortedOutputs; |
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return $valid; |
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} |
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} |
Bit-Wasp /
bitcoin-php
