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<?php |
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/* |
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* Protocol FCGI library |
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* |
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* @copyright Copyright 2021. Lisachenko Alexander <[email protected]> |
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* This source file is subject to the license that is bundled |
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* with this source code in the file LICENSE. |
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*/ |
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declare(strict_types=1); |
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namespace Lisachenko\Protocol\FCGI\Record; |
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use Lisachenko\Protocol\FCGI; |
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use Lisachenko\Protocol\FCGI\Record; |
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/** |
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* Params request record |
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* |
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* @author Alexander.Lisachenko |
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*/ |
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class Params extends Record |
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{ |
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/** |
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* List of params |
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* |
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* @var string[] |
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* @phpstan-var array<string, string> |
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*/ |
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protected array $values = []; |
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/** |
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* Constructs a param request |
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* |
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* @phpstan-param array<string, string> $values |
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*/ |
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public function __construct(array $values = []) |
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{ |
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$this->type = FCGI::PARAMS; |
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$this->values = $values; |
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$this->setContentData($this->packPayload()); |
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} |
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/** |
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* Returns an associative list of parameters |
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* |
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* @phpstan-return array<string, string> |
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*/ |
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public function getValues(): array |
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{ |
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return $this->values; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected static function unpackPayload($self, string $binaryData): void |
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{ |
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assert($self instanceof self); |
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$currentOffset = 0; |
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do { |
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/** @phpstan-var false|array{nameLengthHigh: int} */ |
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$payload = unpack('CnameLengthHigh', $binaryData); |
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if ($payload === false) { |
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throw new \RuntimeException('Can not unpack data from the binary buffer'); |
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} |
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[$nameLengthHigh] = array_values($payload); |
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$isLongName = ($nameLengthHigh >> 7 == 1); |
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$valueOffset = $isLongName ? 4 : 1; |
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/** @phpstan-var false|array{valueLengthHigh: int} */ |
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$payload = unpack('CvalueLengthHigh', substr($binaryData, $valueOffset)); |
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if ($payload === false) { |
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throw new \RuntimeException('Can not unpack data from the binary buffer'); |
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} |
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[$valueLengthHigh] = array_values($payload); |
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$isLongValue = ($valueLengthHigh >> 7 == 1); |
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$dataOffset = $valueOffset + ($isLongValue ? 4 : 1); |
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$formatParts = [ |
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$isLongName ? 'NnameLength' : 'CnameLength', |
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$isLongValue ? 'NvalueLength' : 'CvalueLength', |
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]; |
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$format = join('/', $formatParts); |
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/** @phpstan-var false|array{nameLength: int, valueLength: int} */ |
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$payload = unpack($format, $binaryData); |
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if ($payload === false) { |
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throw new \RuntimeException('Can not unpack data from the binary buffer'); |
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} |
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[$nameLength, $valueLength] = array_values($payload); |
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// Clear top bit for long record |
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$nameLength &= ($isLongName ? 0x7fffffff : 0x7f); |
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$valueLength &= ($isLongValue ? 0x7fffffff : 0x7f); |
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/** @phpstan-var false|array{nameData: string, valueData: string} */ |
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$payload = unpack( |
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"a{$nameLength}nameData/a{$valueLength}valueData", |
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substr($binaryData, $dataOffset) |
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); |
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if ($payload === false) { |
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throw new \RuntimeException('Can not unpack data from the binary buffer'); |
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} |
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[$nameData, $valueData] = array_values($payload); |
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$self->values[$nameData] = $valueData; |
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$keyValueLength = $dataOffset + $nameLength + $valueLength; |
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$binaryData = substr($binaryData, $keyValueLength); |
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$currentOffset += $keyValueLength; |
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} while ($currentOffset < $self->getContentLength()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function packPayload(): string |
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{ |
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$payload = ''; |
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foreach ($this->values as $nameData => $valueData) { |
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$nameLength = strlen($nameData); |
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$valueLength = strlen((string)$valueData); |
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$isLongName = $nameLength > 127; |
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$isLongValue = $valueLength > 127; |
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$formatParts = [ |
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$isLongName ? 'N' : 'C', |
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$isLongValue ? 'N' : 'C', |
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"a{$nameLength}", |
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"a{$valueLength}", |
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]; |
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$format = join('', $formatParts); |
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$payload .= pack( |
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$format, |
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$isLongName ? ($nameLength | 0x80000000) : $nameLength, |
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$isLongValue ? ($valueLength | 0x80000000) : $valueLength, |
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$nameData, |
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$valueData |
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); |
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} |
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return $payload; |
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} |
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} |
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lisachenko /
protocol-fcgi
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