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<?php |
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namespace Blocktrail\SDK; |
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use BitWasp\Bitcoin\Bitcoin; |
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use BitWasp\Bitcoin\Network\Network; |
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use BitWasp\Bitcoin\Network\NetworkInterface; |
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use BitWasp\Bitcoin\Script\Opcodes; |
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use BitWasp\Bitcoin\Script\ScriptFactory; |
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use BitWasp\Buffertools\Buffer; |
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use Blocktrail\SDK\Address\AddressReaderBase; |
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use Blocktrail\SDK\Exceptions\BlocktrailSDKException; |
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class OutputsNormalizer |
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{ |
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/** |
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* @var AddressReaderBase |
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*/ |
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private $reader; |
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/** |
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* OutputsNormalizer constructor. |
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* @param AddressReaderBase $reader |
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*/ |
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public function __construct(AddressReaderBase $reader) { |
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$this->reader = $reader; |
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} |
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/** |
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* @param array $output |
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* @return array |
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* @throws BlocktrailSDKException |
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*/ |
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protected function readArrayFormat(array $output, Network $network) { |
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if (array_key_exists("scriptPubKey", $output) && array_key_exists("value", $output)) { |
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return [ |
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"scriptPubKey" => $output['scriptPubKey'], |
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"value" => $output['value'], |
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]; |
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} else if (array_key_exists("address", $output) && array_key_exists("value", $output)) { |
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return $this->parseAddressOutput($output['address'], $output['value'], $network); |
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} else { |
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$keys = array_keys($output); |
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if (count($keys) === 2 && count($output) === 2 && $keys[0] === 0 && $keys[1] === 1) { |
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return $this->parseAddressOutput($output[0], $output[1], $network); |
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} else { |
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throw new BlocktrailSDKException("Invalid transaction output for numerically indexed list"); |
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} |
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} |
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} |
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/** |
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* @param $address |
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* @param $value |
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* @return array |
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*/ |
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private function parseAddressOutput($address, $value, $network) { |
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if ($address === "opreturn") { |
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$data = new Buffer($value); |
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$scriptPubKey = ScriptFactory::sequence([Opcodes::OP_RETURN, $data]); |
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return [ |
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"value" => 0, |
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"scriptPubKey" => $scriptPubKey, |
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]; |
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} |
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$object = $this->reader->fromString($address, $network); |
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return [ |
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"value" => $value, |
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"scriptPubKey" => $object->getScriptPubKey(), |
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]; |
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} |
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/** |
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* @param array $outputs |
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* @param NetworkInterface|null $network |
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* @return array |
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* @throws BlocktrailSDKException |
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*/ |
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public function normalize(array $outputs, NetworkInterface $network = null) { |
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$network = $network ?: Bitcoin::getNetwork(); |
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if (empty($outputs)) { |
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return []; |
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} |
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$keys = array_keys($outputs); |
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$newOutputs = []; |
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if (is_int($keys[0])) { |
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foreach ($outputs as $i => $output) { |
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if (!is_int($i)) { |
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throw new BlocktrailSDKException("Encountered invalid index while traversing numerically indexed list"); |
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} |
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if (!is_array($output)) { |
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throw new BlocktrailSDKException("Encountered invalid output while traversing numerically indexed list"); |
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} |
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$newOutputs[] = $this->readArrayFormat($output, $network); |
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} |
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} else if (is_string($keys[0])) { |
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foreach ($outputs as $address => $value) { |
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if (!is_string($address)) { |
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throw new BlocktrailSDKException("Encountered invalid address while traversing address keyed list.."); |
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} |
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$newOutputs[] = $this->parseAddressOutput($address, $value, $network); |
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} |
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} |
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foreach ($newOutputs as &$newOutput) { |
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if (fmod($newOutput['value'], 1)) { |
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throw new BlocktrailSDKException("Value should be in Satoshis"); |
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} |
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if (is_string($newOutput['scriptPubKey'])) { |
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$newOutput['scriptPubKey'] = ScriptFactory::fromHex($newOutput['scriptPubKey']); |
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} |
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if (strlen($newOutput['scriptPubKey']->getBinary()) < 1) { |
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throw new BlocktrailSDKException("Script cannot be empty"); |
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} |
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if ($newOutput['scriptPubKey']->getBinary()[0] !== "\x6a") { |
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if (!$newOutput['value']) { |
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throw new BlocktrailSDKException("Values should be non zero"); |
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} else if ($newOutput['value'] < Blocktrail::DUST) { |
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throw new BlocktrailSDKException("Values should be more than dust (" . Blocktrail::DUST . ")"); |
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} |
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} |
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} |
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return $newOutputs; |
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} |
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} |
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blocktrail /
blocktrail-sdk-php
This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass.
Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type.