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Upload.php
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Upload.php
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<?php
// +----------------------------------------------------------------------
// | ThinkAdmin
// +----------------------------------------------------------------------
// | 版权所有 2014~2021 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
// +----------------------------------------------------------------------
// | 官方网站: https://thinkadmin.top
// +----------------------------------------------------------------------
// | 开源协议 ( https://mit-license.org )
// | 免费声明 ( https://thinkadmin.top/disclaimer )
// +----------------------------------------------------------------------
// | gitee 代码仓库：https://gitee.com/zoujingli/ThinkAdmin
// | github 代码仓库：https://github.com/zoujingli/ThinkAdmin
// +----------------------------------------------------------------------
namespace app\admin\controller\api;
use think\admin\Controller;
use think\admin\Storage;
use think\admin\storage\AliossStorage;
use think\admin\storage\LocalStorage;
use think\admin\storage\QiniuStorage;
use think\admin\storage\TxcosStorage;
use think\exception\HttpResponseException;
use think\file\UploadedFile;
use think\Response;
/**
* 文件上传接口
* Class Upload
* @package app\admin\controller\api
*/
class Upload extends Controller
{
/**
* 文件上传脚本
* @return Response
* @throws \think\db\exception\DataNotFoundException
* @throws \think\db\exception\DbException
* @throws \think\db\exception\ModelNotFoundException
*/
public function index(): Response
{
$data = ['exts' => []];
foreach (str2arr(sysconf('storage.allow_exts')) as $ext) {
$data['exts'][$ext] = Storage::mime($ext);
}
$template = realpath(__DIR__ . '/../../view/api/upload.js');
$data['exts'] = json_encode($data['exts'], JSON_UNESCAPED_UNICODE);
$data['nameType'] = sysconf('storage.name_type') ?: 'xmd5';
return view($template, $data)->contentType('application/x-javascript');
}
/**
* 文件上传检查
* @login true
* @throws \think\admin\Exception
* @throws \think\db\exception\DataNotFoundException
* @throws \think\db\exception\DbException
* @throws \think\db\exception\ModelNotFoundException
*/
public function state()
{
[$name, $safe] = [input('name'), $this->getSafe()];
$data = ['uptype' => $this->getType(), 'safe' => intval($safe), 'key' => input('key')];
if ($info = Storage::instance($data['uptype'])->info($data['key'], $safe, $name)) {
$data['url'] = $info['url'];
$data['key'] = $info['key'];
$this->success('文件已经上传', $data, 200);
} elseif ('local' === $data['uptype']) {
$data['url'] = LocalStorage::instance()->url($data['key'], $safe, $name);
$data['server'] = LocalStorage::instance()->upload();
} elseif ('qiniu' === $data['uptype']) {
$data['url'] = QiniuStorage::instance()->url($data['key'], $safe, $name);
$data['token'] = QiniuStorage::instance()->buildUploadToken($data['key'], 3600, $name);
$data['server'] = QiniuStorage::instance()->upload();
} elseif ('alioss' === $data['uptype']) {
$token = AliossStorage::instance()->buildUploadToken($data['key'], 3600, $name);
$data['url'] = $token['siteurl'];
$data['policy'] = $token['policy'];
$data['signature'] = $token['signature'];
$data['OSSAccessKeyId'] = $token['keyid'];
$data['server'] = AliossStorage::instance()->upload();
} elseif ('txcos' === $data['uptype']) {
$token = TxcosStorage::instance()->buildUploadToken($data['key'], 3600, $name);
$data['url'] = $token['siteurl'];
$data['q-ak'] = $token['q-ak'];
$data['policy'] = $token['policy'];
$data['q-key-time'] = $token['q-key-time'];
$data['q-signature'] = $token['q-signature'];
$data['q-sign-algorithm'] = $token['q-sign-algorithm'];
$data['server'] = TxcosStorage::instance()->upload();
}
$this->success('获取上传授权参数', $data, 404);
}
/**
* 文件上传入口
* @login true
* @throws \think\db\exception\DataNotFoundException
* @throws \think\db\exception\DbException
* @throws \think\db\exception\ModelNotFoundException
*/
public function file()
{
if (!($file = $this->getFile())->isValid()) {
$this->error('文件上传异常，文件过大或未上传！');
}
$safeMode = $this->getSafe();
$extension = strtolower($file->getOriginalExtension());
$saveName = input('key') ?: Storage::name($file->getPathname(), $extension, '', 'md5_file');
// 检查文件后缀是否被恶意修改
if (pathinfo(parse_url($saveName, PHP_URL_PATH), PATHINFO_EXTENSION) !== $extension) {
$this->error('文件后缀异常，请重新上传文件！');
}
// 屏蔽禁止上传指定后缀的文件
if (!in_array($extension, str2arr(sysconf('storage.allow_exts')))) {
$this->error('文件类型受限，请在后台配置规则！');
}
if (in_array($extension, ['sh', 'asp', 'bat', 'cmd', 'exe', 'php'])) {
$this->error('文件安全保护，禁止上传可执行文件！');
}
try {
if ($this->getType() === 'local') {
$local = LocalStorage::instance();
$distName = $local->path($saveName, $safeMode);
$file->move(dirname($distName), basename($distName));
$info = $local->info($saveName, $safeMode, $file->getOriginalName());
if (in_array($extension, ['jpg', 'gif', 'png', 'bmp', 'jpeg', 'wbmp'])) {
if ($this->imgNotSafe($distName) && $local->del($saveName)) {
$this->error('图片未通过安全检查！');
}
[$width, $height] = getimagesize($distName);
if (($width < 1 || $height < 1) && $local->del($saveName)) {
$this->error('读取图片的尺寸失败！');
}
}
} else {
$bina = file_get_contents($file->getPathname());
$info = Storage::instance($this->getType())->set($saveName, $bina, $safeMode, $file->getOriginalName());
}
if (isset($info['url'])) {
$this->success('文件上传成功！', ['url' => $safeMode ? $saveName : $info['url']]);
} else {
$this->error('文件处理失败，请稍候再试！');
}
} catch (HttpResponseException $exception) {
throw $exception;
} catch (\Exception $exception) {
$this->error($exception->getMessage());
}
}
/**
* 获取文件上传类型
* @return boolean
*/
private function getSafe(): bool
{
return boolval(input('safe', '0'));
}
/**
* 获取文件上传方式
* @return string
* @throws \think\db\exception\DataNotFoundException
* @throws \think\db\exception\DbException
* @throws \think\db\exception\ModelNotFoundException
*/
private function getType(): string
{
$type = strtolower(input('uptype', ''));
if (in_array($type, ['local', 'qiniu', 'alioss', 'txcos'])) {
return $type;
} else {
return strtolower(sysconf('storage.type'));
}
}
/**
* 获取本地文件对象
* @return UploadedFile
*/
private function getFile(): UploadedFile
{
try {
$file = $this->request->file('file');
if ($file instanceof UploadedFile) {
return $file;
} else {
$this->error('未获取到上传的文件对象！');
}
} catch (HttpResponseException $exception) {
throw $exception;
} catch (\Exception $exception) {
$this->error(lang($exception->getMessage()));
}
}
/**
* 检查图片是否安全
* @param string $filename
* @return boolean
*/
private function imgNotSafe(string $filename): bool
{
$source = fopen($filename, 'rb');
if (($size = filesize($filename)) > 512) {
$hexs = bin2hex(fread($source, 512));
fseek($source, $size - 512);
$hexs .= bin2hex(fread($source, 512));
} else {
$hexs = bin2hex(fread($source, $size));
}
if (is_resource($source)) fclose($source);
$bins = hex2bin($hexs);
/* 匹配十六进制中的 <% ( ) %> 或 <? ( ) ?> 或 <script | /script> */
foreach (['<?php ', '<% ', '<script '] as $key) if (stripos($bins, $key) !== false) return true;
return preg_match("/(3c25.*?28.*?29.*?253e)|(3c3f.*?28.*?29.*?3f3e)|(3C534352495054)|(2F5343524950543E)|(3C736372697074)|(2F7363726970743E)/is", $hexs);
}
}