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<?php |
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namespace BitWasp\Bitcoin\Script\Factory; |
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use BitWasp\Bitcoin\Address\AddressInterface; |
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use BitWasp\Bitcoin\Address\ScriptHashAddress; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface; |
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use BitWasp\Bitcoin\Script\Classifier\OutputClassifier; |
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use BitWasp\Bitcoin\Script\Opcodes; |
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use BitWasp\Bitcoin\Script\ScriptFactory; |
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use BitWasp\Bitcoin\Script\ScriptInterface; |
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use BitWasp\Buffertools\BufferInterface; |
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use BitWasp\Buffertools\Buffertools; |
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class OutputScriptFactory |
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{ |
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/** |
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* @return OutputClassifier |
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*/ |
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public function classify() |
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{ |
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return new OutputClassifier(); |
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} |
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/** |
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* @param AddressInterface $address |
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* @return ScriptInterface |
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*/ |
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public function payToAddress(AddressInterface $address) |
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{ |
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return $address instanceof ScriptHashAddress |
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? ScriptFactory::sequence([Opcodes::OP_HASH160, $address->getHash(), Opcodes::OP_EQUAL]) |
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: ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $address->getHash(), Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]); |
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} |
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/** |
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* Create a Pay to pubkey output |
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* |
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* @param PublicKeyInterface $publicKey |
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* @return ScriptInterface |
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*/ |
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public function payToPubKey(PublicKeyInterface $publicKey) |
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{ |
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return ScriptFactory::sequence([$publicKey->getBuffer(), Opcodes::OP_CHECKSIG]); |
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} |
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/** |
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* Create a P2PKH output script |
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* |
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* @param PublicKeyInterface $public_key |
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* @return ScriptInterface |
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*/ |
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public function payToPubKeyHash(PublicKeyInterface $public_key) |
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{ |
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return ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $public_key->getPubKeyHash(), Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]); |
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} |
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/** |
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* Create a P2PKH output script from a hash. |
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* |
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* @param BufferInterface $hash |
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* @return ScriptInterface |
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*/ |
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public function payToPubKeyHashFromHash(BufferInterface $hash) |
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{ |
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if ($hash->getSize() !== 20) { |
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throw new \RuntimeException('pub-key-hash should be 20 bytes'); |
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} |
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return ScriptFactory::sequence([Opcodes::OP_DUP, Opcodes::OP_HASH160, $hash, Opcodes::OP_EQUALVERIFY, Opcodes::OP_CHECKSIG]); |
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} |
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/** |
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* Create a P2SH output script |
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* |
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* @param ScriptInterface $p2shScript |
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* @return ScriptInterface |
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*/ |
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public function payToScriptHash(ScriptInterface $p2shScript) |
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{ |
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return ScriptFactory::sequence([Opcodes::OP_HASH160, $p2shScript->getScriptHash(), Opcodes::OP_EQUAL]); |
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} |
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/** |
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* Create a P2SH script from a provided hash. |
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* |
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* @param BufferInterface $hash |
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* @return ScriptInterface |
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*/ |
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public function payToScriptHashFromHash(BufferInterface $hash) |
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{ |
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if ($hash->getSize() !== 20) { |
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throw new \RuntimeException('pub-key-hash should be 20 bytes'); |
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} |
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return ScriptFactory::sequence([Opcodes::OP_HASH160, $hash, Opcodes::OP_EQUAL]); |
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} |
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/** |
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* @param int $m |
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* @param PublicKeyInterface[] $keys |
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* @param bool|true $sort |
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* @return ScriptInterface |
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*/ |
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public function multisig($m, array $keys = [], $sort = true) |
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{ |
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$n = count($keys); |
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if ($m > $n) { |
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throw new \LogicException('Required number of sigs exceeds number of public keys'); |
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} |
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if ($n > 16) { |
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throw new \LogicException('Number of public keys is greater than 16'); |
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} |
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if ($sort) { |
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$keys = Buffertools::sort($keys); |
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} |
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$new = ScriptFactory::create(); |
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$new->int($m); |
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foreach ($keys as $key) { |
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if (!$key instanceof PublicKeyInterface) { |
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throw new \LogicException('Values in $keys[] must be a PublicKey'); |
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} |
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$new->push($key->getBuffer()); |
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} |
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return $new->int($n)->op('OP_CHECKMULTISIG')->getScript(); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
