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- <?php
- namespace App\Services;
- use Imagine\Gd\Imagine;
- use Imagine\Image\Box;
- use Imagine\Image\Point;
- class UploaderService
- {
- private $config; //配置信息
- private $fileField; //文件域名
- private $file; //文件上传对象
- private $base64; //文件上传对象
- private $oriName; //原始文件名
- private $fileName; //新文件名
- private $fullName; //完整文件名,即从当前配置目录开始的URL
- private $filePath; //完整文件名,即从当前配置目录开始的URL
- private $fileSize; //文件大小
- private $fileType; //文件类型
- public $thumbs = [];
- private $stateInfo; //上传状态信息,
- public $stateMap = [
- "SUCCESS",
- "文件大小超出 upload_max_filesize 限制",
- "文件大小超出 MAX_FILE_SIZE 限制",
- "文件未被完整上传",
- "没有文件被上传",
- "上传文件为空",
- "ERROR_TMP_FILE" => "临时文件错误",
- "ERROR_TMP_FILE_NOT_FOUND" => "找不到临时文件",
- "ERROR_SIZE_EXCEED" => "文件大小超出网站限制",
- "ERROR_TYPE_NOT_ALLOWED" => "文件类型不允许",
- "ERROR_CREATE_DIR" => "目录创建失败",
- "ERROR_DIR_NOT_WRITEABLE" => "目录没有写权限",
- "ERROR_FILE_MOVE" => "文件保存时出错",
- "ERROR_FILE_NOT_FOUND" => "找不到上传文件",
- "ERROR_WRITE_CONTENT" => "写入文件内容错误",
- "ERROR_UNKNOWN" => "未知错误",
- "ERROR_DEAD_LINK" => "链接不可用",
- "ERROR_HTTP_LINK" => "链接不是http链接",
- "ERROR_HTTP_CONTENTTYPE" => "链接contentType不正确",
- "INVALID_URL" => "非法 URL",
- "INVALID_IP" => "非法 IP"
- ];
- public function __construct($fileField, $config, $type = "upload")
- {
- $this->fileField = $fileField;
- $this->config = $config;
- $this->type = $type;
- if ($type == "remote") {
- return $this->saveRemote();
- } else if ($type == "base64") {
- return $this->upBase64();
- } else if ($type == 'crop') {
- return $this->createThumb();
- } else {
- return $this->upFile();
- }
- }
- /**
- * 上传文件的主处理方法
- *
- * @return mixed
- */
- private function upFile()
- {
- $file = $this->file = $_FILES[$this->fileField];
- if (!$file) {
- $this->stateInfo = $this->getStateInfo('ERROR_FILE_NOT_FOUND');
- return false;
- }
- if ($this->file['error']) {
- $this->stateInfo = $this->getStateInfo($file['error']);
- return false;
- } else if (!file_exists($file['tmp_name'])) {
- $this->stateInfo = $this->getStateInfo("ERROR_TMP_FILE_NOT_FOUND");
- return false;
- } else if (!is_uploaded_file($file['tmp_name'])) {
- $this->stateInfo = $this->getStateInfo("ERROR_TMPFILE");
- return false;
- }
- $this->oriName = $file['name'];
- $this->fileSize = $file['size'];
- $this->fileType = $this->getFileExt();
- $this->fullName = $this->getFullName();
- $this->filePath = $this->getFilePath();
- $this->fileName = $this->getFileName();
- $dirname = dirname($this->filePath);
- //检查文件大小是否超出限制
- if (!$this->checkSize()) {
- $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
- return false;
- }
- //检查是否不允许的文件格式
- if (!$this->checkType()) {
- $this->stateInfo = $this->getStateInfo("ERROR_TYPE_NOT_ALLOWED");
- return false;
- }
- //创建目录失败
- if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
- $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
- return false;
- } else if (!is_writeable($dirname)) {
- $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
- return false;
- }
- //移动文件
- if (!(move_uploaded_file($file["tmp_name"], $this->filePath) && file_exists($this->filePath))) { //移动失败
- $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
- return false;
- } else { //移动成功
- return true;
- }
- }
- /**
- * [
- * [
- * type:0, //默认为0 0 自动缩放 1 按照固定数据缩放 按照给定的宽高缩放 2 按照看缩放 3 按照高缩放
- * width:200px;
- * height:200px;
- * ],
- * [
- * x=>0,
- * y=>0,
- * width:200px;
- * height:200px;
- * ]
- * ]
- */
- public function createThumb()
- {
- $path = [];
- if (!isset($this->config['filePath'])) {
- die('图片不存在!');
- }
- $imgArr = parse_url($this->config['filePath']);
- $imgUrl = $imgArr['path'];
- $this->filePath = public_path($imgArr['path']);
- if ($arr = $this->getThumbArr()) {
- foreach ($arr as $value) {
- $imagine = new Imagine();
- $image = $imagine->open($this->filePath);
- $imageSize = $image->getSize();
- $imageW = $imageSize->getWidth();
- $imageH = $imageSize->getHeight();
- $aspectRatio = $imageW / $imageH;
- $metadata = $image->metadata()->toArray();
- if (isset($value['x']) || isset($value['y'])) {
- $x = $value['x'] ?? 0;
- $y = $value['y'] ?? 0;
- $w = $value['width'];
- $h = $value['height'];
- $imgPath = $this->filePath . $x . $y . $w . $h . '.jpg';
- $path[] = [
- 'path' => $imgUrl . $x . $y . $w . $h . '.jpg',
- 'realPath' => $imgPath,
- 'metadata' => $metadata,
- ];
- //图片先设置比例大小,然后再裁剪,宽度和高度最大值不能超过500px
- if ($imageW >= $imageH) {
- if ($imageW > 500) {
- $imageW = 500;
- $imageH = $imageW / $aspectRatio;
- }
- } else {
- if ($imageH > 500) {
- $imageH = 500;
- $imageW = $imageH * $aspectRatio;
- }
- }
- $point = new Point($x, $y);
- $size = new Box($imageW, $imageH);
- $box = new Box($value['width'], $value['height']);
- $image->resize($size)->crop($point, $box)->save($imgPath);
- }
- }
- }
- $this->thumbs = $path;
- }
- private function getThumbArr()
- {
- return $this->config['thumb'] ?? [];
- }
- /**
- * 处理base64编码的图片上传
- *
- * @return mixed
- */
- private function upBase64()
- {
- $base64Data = $_POST[$this->fileField];
- //截取字符串
- $base64Data = preg_replace('/data:image\/png;base64,/is', '', $base64Data);
- $img = base64_decode($base64Data);
- $this->oriName = $this->config['oriName'];
- $this->fileSize = strlen($img);
- $this->fileType = $this->getFileExt();
- $this->fullName = $this->getFullName();
- $this->filePath = $this->getFilePath();
- $this->fileName = $this->getFileName();
- $dirname = dirname($this->filePath);
- //检查文件大小是否超出限制
- if (!$this->checkSize()) {
- $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
- return false;
- }
- //创建目录失败
- if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
- $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
- return false;
- } else if (!is_writeable($dirname)) {
- $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
- return false;
- }
- //移动文件
- if (!(file_put_contents($this->filePath, $img) && file_exists($this->filePath))) { //移动失败
- $this->stateInfo = $this->getStateInfo("ERROR_WRITE_CONTENT");
- return false;
- } else { //移动成功
- return true;
- }
- }
- /**
- * 拉取远程图片
- *
- * @return mixed
- */
- private function saveRemote()
- {
- $imgUrl = htmlspecialchars($this->fileField);
- $imgUrl = str_replace("&", "&", $imgUrl);
- //http开头验证
- if (strpos($imgUrl, "http") !== 0) {
- $this->stateInfo = $this->getStateInfo("ERROR_HTTP_LINK");
- return false;
- }
- preg_match('/(^https*:\/\/[^:\/]+)/', $imgUrl, $matches);
- $host_with_protocol = count($matches) > 1 ? $matches[1] : '';
- // 判断是否是合法 url
- if (!filter_var($host_with_protocol, FILTER_VALIDATE_URL)) {
- $this->stateInfo = $this->getStateInfo("INVALID_URL");
- return false;
- }
- preg_match('/^https*:\/\/(.+)/', $host_with_protocol, $matches);
- $host_without_protocol = count($matches) > 1 ? $matches[1] : '';
- // 此时提取出来的可能是 ip 也有可能是域名,先获取 ip
- $ip = gethostbyname($host_without_protocol);
- // 判断是否是私有 ip
- if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE)) {
- $this->stateInfo = $this->getStateInfo("INVALID_IP");
- return false;
- }
- //获取请求头并检测死链
- $heads = get_headers($imgUrl, 1);
- if (!(stristr($heads[0], "200") && stristr($heads[0], "OK"))) {
- $this->stateInfo = $this->getStateInfo("ERROR_DEAD_LINK");
- return false;
- }
- //格式验证(扩展名验证和Content-Type验证)
- $fileType = strtolower(strrchr($imgUrl, '.'));
- if (!in_array($fileType, $this->config['allowFiles']) || !isset($heads['Content-Type']) || !stristr($heads['Content-Type'], "image")) {
- $this->stateInfo = $this->getStateInfo("ERROR_HTTP_CONTENTTYPE");
- return false;
- }
- //打开输出缓冲区并获取远程图片
- ob_start();
- $context = stream_context_create(
- array('http' => array(
- 'follow_location' => false // don't follow redirects
- ))
- );
- readfile($imgUrl, false, $context);
- $img = ob_get_contents();
- ob_end_clean();
- preg_match("/[\/]([^\/]*)[\.]?[^\.\/]*$/", $imgUrl, $m);
- $this->oriName = $m ? $m[1] : "";
- $this->fileSize = strlen($img);
- $this->fileType = $this->getFileExt();
- $this->fullName = $this->getFullName();
- $this->filePath = $this->getFilePath();
- $this->fileName = $this->getFileName();
- $dirname = dirname($this->filePath);
- //检查文件大小是否超出限制
- if (!$this->checkSize()) {
- $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
- return false;
- }
- //创建目录失败
- if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
- $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
- return false;
- } else if (!is_writeable($dirname)) {
- $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
- return false;
- }
- //移动文件
- if (!(file_put_contents($this->filePath, $img) && file_exists($this->filePath))) { //移动失败
- $this->stateInfo = $this->getStateInfo("ERROR_WRITE_CONTENT");
- return false;
- } else { //移动成功
- return true;
- }
- }
- /**
- * 返回错误信息
- *
- * @return mixed
- */
- public function getErrorMsg()
- {
- return $this->stateInfo;
- }
- /**
- * 上传错误检查
- *
- * @param $errCode
- * @return string
- */
- private function getStateInfo($errCode)
- {
- return !$this->stateMap[$errCode] ? $this->stateMap["ERROR_UNKNOWN"] : $this->stateMap[$errCode];
- }
- /**
- * 获取文件扩展名
- *
- * @return string
- */
- public function getFileExt()
- {
- return strtolower(strrchr($this->oriName, '.'));
- }
- /**
- * 重命名文件
- *
- * @return string
- */
- private function getFullName()
- {
- //替换日期事件
- $savePath = $this->config["savePath"];
- //文件名称随机
- if (isset($this->config['fileName']) && !empty($this->config['fileName'])) {
- $randNum = $this->config['fileName'];
- } else {
- $randNum = md5(microtime() . rand(1, 10000) . rand(1, 10000));
- }
- $ext = $this->getFileExt();
- return rtrim($savePath, '/') . '/' . $randNum . $ext;
- }
- /**
- * 获取文件名
- *
- * @return string
- */
- private function getFileName()
- {
- return substr($this->filePath, strrpos($this->filePath, '/') + 1);
- }
- /**
- * 获取文件完整路径
- *
- * @return string
- */
- private function getFilePath()
- {
- $fullname = $this->fullName;
- $rootPath = $_SERVER['DOCUMENT_ROOT'];
- if (substr($fullname, 0, 1) != '/') {
- $fullname = '/' . $fullname;
- }
- return $rootPath . $fullname;
- }
- /**
- * 文件类型检测
- *
- * @return bool
- */
- private function checkType()
- {
- return in_array($this->getFileExt(), $this->config["allowFiles"]);
- }
- /**
- * 文件大小检测
- *
- * @return bool
- */
- private function checkSize()
- {
- return $this->fileSize <= ($this->config["maxSize"]);
- }
- /**
- * 获取原上传文件的名称
- */
- public function getClientOriginalName()
- {
- return $this->oriName;
- }
- /**
- * 获取原上传文件的大小byte
- *
- * @return mixed
- */
- public function getClientSize()
- {
- return $this->fileSize;
- }
- /**
- * 获取文件的全路径
- */
- public function getFullPath()
- {
- return $this->fullName;
- }
- /**
- * 获取当前上传成功文件的各项信息
- *
- * @return array
- */
- public function getFileInfo()
- {
- return array(
- "state" => $this->stateInfo,
- "url" => $this->fullName,
- "title" => $this->fileName,
- "original" => $this->oriName,
- "type" => $this->fileType,
- "size" => $this->fileSize
- );
- }
- }
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