62 lines
2.2 KiB
PHP
62 lines
2.2 KiB
PHP
<?php
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// 保存头像到本地（避免重复），不进行过期清理
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header('Content-Type: application/json; charset=utf-8');
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function respond($ok, $message = '', $path = '') {
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echo json_encode(['success' => $ok, 'message' => $message, 'path' => $path], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
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exit;
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}
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$raw = file_get_contents('php://input');
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$data = json_decode($raw, true);
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$url = $data['url'] ?? '';
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if (!$url || !filter_var($url, FILTER_VALIDATE_URL)) {
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respond(false, 'URL无效');
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}
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$scheme = parse_url($url, PHP_URL_SCHEME);
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if (!in_array(strtolower($scheme), ['http','https'])) {
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respond(false, '仅支持http/https图片地址');
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}
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$avatarsRoot = __DIR__ . '/../avatars';
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if (!is_dir($avatarsRoot)) { @mkdir($avatarsRoot, 0777, true); }
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$today = (new DateTime('now'))->format('Y-m-d');
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$targetDir = $avatarsRoot . '/' . $today;
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if (!is_dir($targetDir)) { @mkdir($targetDir, 0777, true); }
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// 推断扩展名
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$pathExt = strtolower(pathinfo(parse_url($url, PHP_URL_PATH) ?? '', PATHINFO_EXTENSION));
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$allowed = ['jpg','jpeg','png','gif','webp'];
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if (!$pathExt || !in_array($pathExt, $allowed)) { $pathExt = 'jpg'; }
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// 使用URL的basename作为文件名，若没有则用hash
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$basename = basename(parse_url($url, PHP_URL_PATH) ?: '');
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if (!$basename || $basename === '/' || $basename === '\\') {
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$basename = md5($url) . '.' . $pathExt;
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}
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if (strpos($basename, '.') === false) { $basename .= '.' . $pathExt; }
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$safeName = preg_replace('/[^\w\.-]+/u', '_', $basename);
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$targetPath = $targetDir . '/' . $safeName;
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// 如果已存在，跳过下载
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if (file_exists($targetPath)) {
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respond(true, '文件已存在，跳过下载', str_replace($_SERVER['DOCUMENT_ROOT'], '', $targetPath));
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}
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// 下载保存
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try {
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$read = @fopen($url, 'rb');
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if (!$read) { respond(false, '无法读取远程图片'); }
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$write = @fopen($targetPath, 'wb');
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if (!$write) { respond(false, '无法写入文件'); }
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stream_copy_to_stream($read, $write);
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fclose($read);
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fclose($write);
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} catch (Throwable $e) {
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respond(false, '保存失败: ' . $e->getMessage());
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}
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respond(true, '保存成功', str_replace($_SERVER['DOCUMENT_ROOT'], '', $targetPath));
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