mirror of
https://github.com/Respect/Validation.git
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130 lines
3.1 KiB
PHP
130 lines
3.1 KiB
PHP
<?php
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/*
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* This file is part of Respect/Validation.
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*
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* (c) Alexandre Gomes Gaigalas <alganet@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE file
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* that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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use Psr\Http\Message\StreamInterface;
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use Psr\Http\Message\UploadedFileInterface;
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use Respect\Validation\Exceptions\ComponentException;
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use SplFileInfo;
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use function filesize;
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use function floatval;
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use function is_numeric;
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use function is_string;
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use function preg_match;
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use function sprintf;
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/**
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* Validates whether the input is a file that is of a certain size or not.
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*
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* @author Danilo Correa <danilosilva87@gmail.com>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Felipe Stival <v0idpwn@gmail.com>
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*/
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final class Size extends AbstractRule
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{
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/**
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* @var string|int|null
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*/
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private $minSize; /** @phpstan-ignore-line */
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/**
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* @var float|null
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*/
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private $minValue;
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/**
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* @var string|int|null
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*/
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private $maxSize; /** @phpstan-ignore-line */
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/**
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* @var float|null
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*/
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private $maxValue;
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/**
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* @param string|int|null $minSize
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* @param string|int|null $maxSize
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*/
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public function __construct($minSize = null, $maxSize = null)
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{
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$this->minSize = $minSize;
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$this->minValue = $minSize ? $this->toBytes($minSize) : null;
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$this->maxSize = $maxSize;
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$this->maxValue = $maxSize ? $this->toBytes($maxSize) : null;
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}
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/**
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* {@inheritDoc}
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*/
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public function validate($input): bool
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{
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if ($input instanceof SplFileInfo) {
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return $this->isValidSize($input->getSize());
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}
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if ($input instanceof UploadedFileInterface) {
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return $this->isValidSize($input->getSize());
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}
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if ($input instanceof StreamInterface) {
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return $this->isValidSize($input->getSize());
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}
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if (is_string($input)) {
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return $this->isValidSize((int) filesize($input));
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}
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return false;
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}
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/**
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* @todo Move it to a trait
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*
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* @param mixed $size
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*/
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private function toBytes($size): float
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{
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$value = $size;
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$units = ['b', 'kb', 'mb', 'gb', 'tb', 'pb', 'eb', 'zb', 'yb'];
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foreach ($units as $exponent => $unit) {
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if (!preg_match('/^(\d+(.\d+)?)' . $unit . '$/i', (string) $size, $matches)) {
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continue;
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}
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$value = floatval($matches[1]) * 1024 ** $exponent;
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break;
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}
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if (!is_numeric($value)) {
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throw new ComponentException(sprintf('"%s" is not a recognized file size.', (string) $size));
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}
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return (float) $value;
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}
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private function isValidSize(float $size): bool
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{
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if ($this->minValue !== null && $this->maxValue !== null) {
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return $size >= $this->minValue && $size <= $this->maxValue;
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}
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if ($this->minValue !== null) {
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return $size >= $this->minValue;
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}
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return $size <= $this->maxValue;
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}
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}
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