99 lines
2.9 KiB
PHP
99 lines
2.9 KiB
PHP
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<?php
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/**
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* 本地磁盘驱动 —— 也是云端失败时的**回退目标**。
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* 绝不因为云配置出问题就让用户丢文件。
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*/
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declare(strict_types=1);
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namespace App\Storage;
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final class LocalDriver implements StorageDriver
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{
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private string $root;
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public function __construct(string $root)
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{
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$this->root = rtrim($root, '/');
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}
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public function id(): string
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{
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return 'local';
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}
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public function validateConfig(): string
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{
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return is_dir($this->root) || @mkdir($this->root, 0755, true)
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? ''
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: '本地存储目录不可写';
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}
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private function abs(string $key): string
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{
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// 挡目录穿越：.. 一律拒绝
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$key = ltrim(str_replace('\\', '/', $key), '/');
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if (strpos($key, '..') !== false) {
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return $this->root . '/__invalid__';
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}
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return $this->root . '/' . $key;
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}
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public function putFile(string $srcPath, string $key, ?string $mime = null): array
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{
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$dst = $this->abs($key);
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$dir = dirname($dst);
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if (!is_dir($dir) && !@mkdir($dir, 0755, true)) {
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return ['ok' => false, 'error' => '建不了目录：' . $dir];
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}
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if (!@copy($srcPath, $dst)) {
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return ['ok' => false, 'error' => '复制文件失败'];
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}
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@chmod($dst, 0644);
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return ['ok' => true, 'error' => ''];
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}
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public function putContents(string $binary, string $key, ?string $mime = null): array
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{
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$dst = $this->abs($key);
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$dir = dirname($dst);
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if (!is_dir($dir) && !@mkdir($dir, 0755, true)) {
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return ['ok' => false, 'error' => '建不了目录：' . $dir];
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}
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if (@file_put_contents($dst, $binary) === false) {
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return ['ok' => false, 'error' => '写入文件失败'];
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}
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@chmod($dst, 0644);
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return ['ok' => true, 'error' => ''];
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}
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public function delete(string $key): array
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{
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$p = $this->abs($key);
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if (is_file($p) && !@unlink($p)) {
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return ['ok' => false, 'error' => '删不掉：' . $key];
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}
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return ['ok' => true, 'error' => ''];
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}
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public function get(string $key, array $extra = []): array
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{
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$p = $this->abs($key);
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if (!is_file($p)) {
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return ['ok' => false, 'status' => 404, 'headers' => [], 'body' => '', 'error' => '文件不存在'];
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}
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$body = (string)@file_get_contents($p);
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return ['ok' => true, 'status' => 200, 'headers' => [], 'body' => $body, 'error' => ''];
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}
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public function exists(string $key): bool
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{
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return is_file($this->abs($key));
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}
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/** 本地文件返回站点相对路径（相对站点根，前面带 /） */
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public function url(string $key): string
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{
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return '/' . ltrim(str_replace('\\', '/', $key), '/');
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}
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}
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