mirror of
https://gitee.com/zoujingli/ThinkAdmin.git
synced 2025-04-05 05:52:43 +08:00
222 lines
8.8 KiB
PHP
222 lines
8.8 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkAdmin
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// +----------------------------------------------------------------------
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// | 版权所有 2014~2021 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
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// +----------------------------------------------------------------------
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// | 官方网站: https://thinkadmin.top
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// +----------------------------------------------------------------------
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// | 开源协议 ( https://mit-license.org )
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// | 免费声明 ( https://thinkadmin.top/disclaimer )
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// +----------------------------------------------------------------------
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// | gitee 代码仓库：https://gitee.com/zoujingli/ThinkAdmin
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// | github 代码仓库：https://github.com/zoujingli/ThinkAdmin
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// +----------------------------------------------------------------------
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namespace app\admin\controller\api;
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use think\admin\Controller;
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use think\admin\Storage;
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use think\admin\storage\AliossStorage;
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use think\admin\storage\LocalStorage;
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use think\admin\storage\QiniuStorage;
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use think\admin\storage\TxcosStorage;
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use think\exception\HttpResponseException;
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use think\file\UploadedFile;
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use think\Response;
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/**
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* 文件上传接口
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* Class Upload
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* @package app\admin\controller\api
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*/
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class Upload extends Controller
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{
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/**
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* 文件上传脚本
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* @return Response
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\DbException
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* @throws \think\db\exception\ModelNotFoundException
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*/
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public function index(): Response
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{
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$data = ['exts' => []];
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foreach (str2arr(sysconf('storage.allow_exts')) as $ext) {
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$data['exts'][$ext] = Storage::mime($ext);
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}
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$template = realpath(__DIR__ . '/../../view/api/upload.js');
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$data['exts'] = json_encode($data['exts'], JSON_UNESCAPED_UNICODE);
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return view($template, $data)->contentType('application/x-javascript');
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}
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/**
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* 文件上传检查
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* @login true
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* @throws \think\admin\Exception
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\DbException
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* @throws \think\db\exception\ModelNotFoundException
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*/
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public function state()
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{
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[$name, $safe] = [input('name'), $this->getSafe()];
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$data = ['uptype' => $this->getType(), 'safe' => intval($safe), 'key' => input('key')];
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if ($info = Storage::instance($data['uptype'])->info($data['key'], $safe, $name)) {
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$data['url'] = $info['url'];
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$this->success('文件已经上传', $data, 200);
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} elseif ('local' === $data['uptype']) {
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$data['url'] = LocalStorage::instance()->url($data['key'], $safe, $name);
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$data['server'] = LocalStorage::instance()->upload();
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} elseif ('qiniu' === $data['uptype']) {
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$data['url'] = QiniuStorage::instance()->url($data['key'], $safe, $name);
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$data['token'] = QiniuStorage::instance()->buildUploadToken($data['key'], 3600, $name);
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$data['server'] = QiniuStorage::instance()->upload();
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} elseif ('alioss' === $data['uptype']) {
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$token = AliossStorage::instance()->buildUploadToken($data['key'], 3600, $name);
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$data['url'] = $token['siteurl'];
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$data['policy'] = $token['policy'];
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$data['signature'] = $token['signature'];
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$data['OSSAccessKeyId'] = $token['keyid'];
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$data['server'] = AliossStorage::instance()->upload();
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} elseif ('txcos' === $data['uptype']) {
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$token = TxcosStorage::instance()->buildUploadToken($data['key'], 3600, $name);
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$data['url'] = $token['siteurl'];
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$data['q-ak'] = $token['q-ak'];
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$data['policy'] = $token['policy'];
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$data['q-key-time'] = $token['q-key-time'];
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$data['q-signature'] = $token['q-signature'];
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$data['q-sign-algorithm'] = $token['q-sign-algorithm'];
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$data['server'] = TxcosStorage::instance()->upload();
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}
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$this->success('获取上传授权参数', $data, 404);
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}
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/**
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* 文件上传入口
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* @login true
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\DbException
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* @throws \think\db\exception\ModelNotFoundException
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*/
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public function file()
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{
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if (!($file = $this->getFile())->isValid()) {
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$this->error('文件上传异常，文件过大或未上传！');
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}
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$safeMode = $this->getSafe();
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$extension = strtolower($file->getOriginalExtension());
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$saveName = input('key') ?: Storage::name($file->getPathname(), $extension, '', 'md5_file');
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// 检查文件后缀是否被恶意修改
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if (ltrim(strtolower(strrchr($saveName, '.')), '.') !== $extension) {
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$this->error('文件后缀异常，请重新上传文件！');
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}
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// 屏蔽禁止上传指定后缀的文件
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if (!in_array($extension, str2arr(sysconf('storage.allow_exts')))) {
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$this->error('文件类型受限，请在后台配置规则！');
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}
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if (in_array($extension, ['sh', 'asp', 'bat', 'cmd', 'exe', 'php'])) {
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$this->error('文件安全保护，禁止上传可执行文件！');
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}
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try {
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if ($this->getType() === 'local') {
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$local = LocalStorage::instance();
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$distName = $local->path($saveName, $safeMode);
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$file->move(dirname($distName), basename($distName));
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$info = $local->info($saveName, $safeMode, $file->getOriginalName());
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if (in_array($extension, ['jpg', 'gif', 'png', 'bmp', 'jpeg', 'wbmp'])) {
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if ($this->imgNotSafe($distName) && $local->del($saveName)) {
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$this->error('图片未通过安全检查！');
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}
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[$width, $height] = getimagesize($distName);
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if (($width < 1 || $height < 1) && $local->del($saveName)) {
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$this->error('读取图片的尺寸失败！');
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}
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}
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} else {
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$bina = file_get_contents($file->getPathname());
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$info = Storage::instance($this->getType())->set($saveName, $bina, $safeMode, $file->getOriginalName());
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}
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if (isset($info['url'])) {
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$this->success('文件上传成功！', ['url' => $safeMode ? $saveName : $info['url']]);
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} else {
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$this->error('文件处理失败，请稍候再试！');
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}
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} catch (HttpResponseException $exception) {
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throw $exception;
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} catch (\Exception $exception) {
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$this->error($exception->getMessage());
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}
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}
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/**
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* 获取文件上传类型
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* @return boolean
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*/
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private function getSafe(): bool
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{
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return boolval(input('safe', '0'));
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}
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/**
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* 获取文件上传方式
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* @return string
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\DbException
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* @throws \think\db\exception\ModelNotFoundException
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*/
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private function getType(): string
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{
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$type = strtolower(input('uptype', ''));
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if (in_array($type, ['local', 'qiniu', 'alioss', 'txcos'])) {
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return $type;
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} else {
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return strtolower(sysconf('storage.type'));
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}
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}
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/**
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* 获取本地文件对象
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* @return UploadedFile
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*/
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private function getFile(): UploadedFile
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{
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try {
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$file = $this->request->file('file');
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if ($file instanceof UploadedFile) {
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return $file;
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} else {
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$this->error('未获取到上传的文件对象！');
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}
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} catch (HttpResponseException $exception) {
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throw $exception;
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} catch (\Exception $exception) {
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$this->error(lang($exception->getMessage()));
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}
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}
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/**
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* 检查图片是否安全
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* @param string $filename
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* @return boolean
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*/
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private function imgNotSafe(string $filename): bool
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{
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$source = fopen($filename, 'rb');
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if (($size = filesize($filename)) > 512) {
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$hexs = bin2hex(fread($source, 512));
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fseek($source, $size - 512);
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$hexs .= bin2hex(fread($source, 512));
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} else {
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$hexs = bin2hex(fread($source, $size));
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}
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if (is_resource($source)) fclose($source);
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$bins = hex2bin($hexs);
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/* 匹配十六进制中的 <% ( ) %> 或 <? ( ) ?> 或 <script | /script> */
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foreach (['<?php ', '<% ', '<script '] as $key) if (stripos($bins, $key) !== false) return true;
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return preg_match("/(3c25.*?28.*?29.*?253e)|(3c3f.*?28.*?29.*?3f3e)|(3C534352495054)|(2F5343524950543E)|(3C736372697074)|(2F7363726970743E)/is", $hexs);
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}
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}
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