269 lines
6.3 KiB
PHP
269 lines
6.3 KiB
PHP
<?php
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/**
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* This file is part of the ForkBB <https://github.com/forkbb>.
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*
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* @copyright (c) Visman <mio.visman@yandex.ru, https://github.com/MioVisman>
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* @license The MIT License (MIT)
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*/
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declare(strict_types=1);
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namespace ForkBB\Core;
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use ForkBB\Core\Files;
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use ForkBB\Core\Exceptions\FileException;
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use InvalidArgumentException;
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class File
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{
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/**
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* Текст ошибки
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*/
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protected ?string $error = null;
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/**
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* Содержимое файла
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*/
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protected ?string $data;
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/**
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* Размер оригинального файла
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*/
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protected int|false $size;
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/**
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* Флаг автопереименования файла
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*/
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protected bool $rename = false;
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/**
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* Флаг перезаписи файла
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*/
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protected bool $rewrite = false;
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/**
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* Паттерн для pathinfo
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*/
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protected string $pattern = '%^(?!.*?\.\.)([\w.\x5C/:-]*[\x5C/])?(\*|[\w.-]+)\.(\*|[a-z\d]+)$%iD';
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public function __construct(protected string $path, protected string $name, protected string $ext, protected Files $files)
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{
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if ($files->isBadPath($path)) {
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throw new FileException('Bad path to file');
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}
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if (! \is_file($path)) {
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throw new FileException('File not found');
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}
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if (! \is_readable($path)) {
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throw new FileException('File can not be read');
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}
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$this->data = null;
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$this->size = \is_string($this->data) ? \strlen($this->data) : \filesize($path);
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if (! $this->size) {
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throw new FileException('File size is undefined');
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}
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}
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/**
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* Возвращает текст ошибки
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*/
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public function error(): ?string
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{
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return $this->error;
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}
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/**
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* Возвращает информацию о пути к сохраняемому файлу с учетом подстановок
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*/
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protected function pathinfo(string $path): ?array
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{
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if (! \preg_match($this->pattern, $path, $matches)) {
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$this->error = 'The path/name format is broken';
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return null;
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}
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if ('*' === $matches[2]) {
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$matches[2] = $this->files->filterName($this->name);
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}
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if ('*' === $matches[3]) {
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$matches[3] = $this->ext;
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} elseif (
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'(' === $matches[3][0]
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&& ')' === $matches[3][-1]
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) {
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$matches[3] = \explode('|', \substr($matches[3], 1, -1));
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if (1 === \count($matches[3])) {
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$matches[3] = \array_pop($matches[3]);
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}
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}
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return [
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'dirname' => $matches[1],
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'filename' => $matches[2],
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'extension' => $matches[3],
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];
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}
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/**
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* Устанавливает флаг автопереименования файла
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*/
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public function rename(bool $rename): File
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{
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$this->rename = $rename;
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return $this;
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}
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/**
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* Устанавливает флаг перезаписи файла
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*/
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public function rewrite(bool $rewrite): File
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{
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$this->rewrite = $rewrite;
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return $this;
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}
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/**
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* Создает/проверяет на запись директорию
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*/
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protected function dirProc(string $dirname): bool
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{
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if (! \is_dir($dirname)) {
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if (! \mkdir($dirname, 0755, true)) {
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$this->error = 'Can not create directory';
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return false;
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}
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}
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if (! \is_writable($dirname)) {
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$this->error = 'No write access for directory';
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return false;
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}
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return true;
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}
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/**
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* Создает/устанавливает права на файл
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*/
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protected function fileProc(string $path): bool
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{
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if (\is_string($this->data)) {
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if (! \file_put_contents($this->path, $path)) {
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$this->error = 'Error writing file';
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return false;
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}
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} else {
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if (! \copy($this->path, $path)) {
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$this->error = 'Error copying file';
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return false;
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}
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}
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\chmod($path, 0644);
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return true;
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}
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/**
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* Сохраняет файл по указанному шаблону пути
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*/
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public function toFile(string $path, int $maxSize = null): bool
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{
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$info = $this->pathinfo($path);
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if (empty($info)) {
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return false;
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}
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if ($this->files->isBadPath($info['dirname'])) {
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$this->error = 'Bad path to file';
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return false;
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}
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if (
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! $this->dirProc($info['dirname'])
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) {
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return false;
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}
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$name = $info['filename'];
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$i = 1;
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while (true) {
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$path = $info['dirname'] . $info['filename'] . '.' . $info['extension'];
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if ($this->files->isBadPath($path)) {
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$this->error = 'Bad path to file';
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return false;
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}
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if (\file_exists($path)) {
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if ($this->rename) {
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++$i;
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$info['filename'] = $name . '_' . $i;
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continue;
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} elseif (! $this->rewrite) {
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$this->error = 'Such file already exists';
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return false;
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}
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}
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break;
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}
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if ($this->fileProc($path)) {
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$this->size = \filesize($path);
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if (
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null !== $maxSize
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&& $this->size > $maxSize
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) {
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$this->error = 'File is larger than the allowed size';
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\unlink($path);
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return false;
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}
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$this->path = $path;
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$this->name = $info['filename'];
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$this->ext = $info['extension'];
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return true;
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} else {
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return false;
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}
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}
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public function name(): string
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{
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return $this->name;
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}
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public function ext(): string
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{
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return $this->ext;
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}
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public function size(): int
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{
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return $this->size;
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}
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public function path(): string
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{
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return $this->path;
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}
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}
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