added remote image catch support

Author: yueziii

src/Events/Catched.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the overtrue/laravel-ueditor.
+ *
+ * (c) yueziii <[email protected]>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Overtrue\LaravelUEditor\Events;
+
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+use Symfony\Component\HttpFoundation\File\UploadedFile;
+
+/**
+ * Class Catched.
+ *
+ * @author yueziii <[email protected]>
+ */
+class Catched 
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    /**
+     * @var array
+     */
+    public $result;
+
+    /**
+     * Catched constructor.
+     *
+     * @param array  $result
+     */
+    public function __construct(array $result)
+    {
+        // $this->file = $file;
+        $this->result = $result;
+    }
+}

src/StorageManager.php

@@ -16,6 +16,7 @@
 use Illuminate\Support\Facades\Storage;
 use Overtrue\LaravelUEditor\Events\Uploaded;
 use Overtrue\LaravelUEditor\Events\Uploading;
+use Overtrue\LaravelUEditor\Events\Catched;
 use Symfony\Component\HttpFoundation\File\UploadedFile;
 
 /**
@@ -85,6 +86,90 @@ public function upload(Request $request)
 
         return response()->json($response);
     }
+    /**
+     * Fetch a file.
+     *
+     * @param \Illuminate\Http\Request $request
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function fetch(Request $request)
+    {
+        $config = $this->getUploadConfig($request->get('action'));
+        $urls = $request->get($config['field_name']);
+        if (count($urls) === 0) {
+            return $this->error('UPLOAD_ERR_NO_FILE');
+        }
+        $urls = array_unique($urls);
+        
+        $list = array();
+        foreach ($urls as $key => $url) {
+            $img = $this->download($url, $config);
+            $item = [];
+            if ($img['state'] === 'SUCCESS') {
+                $file = $img['file'];
+                $filename = $img['filename'];
+                $this->storeContent($file, $filename);
+                if ($this->eventSupport()) {
+                    unset($img['file']);
+                    event(new Catched($img));
+                }
+            }
+            $img['filename'] = $filename;
+            unset($img['file']);
+            array_push($list, $img);
+        }
+
+        $response = [
+            'state'=> count($list) ? 'SUCCESS':'ERROR',
+            'list'=> $list
+        ];
+
+        return response()->json($response);
+    }
+    /**
+     * Download a file.
+     *
+     * @param \Illuminate\Http\Request $request
+     *
+     * @return file
+     */
+    private function download($url, $config)
+    {
+        $imgUrl = htmlspecialchars($url);
+        $imgUrl = str_replace('&', '&', $imgUrl);
+        $pathRes = parse_url($imgUrl);
+        $queryString = isset($pathRes['query']) ? $pathRes['query'] : '';
+        $imgUrl = str_replace('?' . $queryString, '', $imgUrl);
+        if (strpos($imgUrl, 'http') !== 0) {
+            return $this->error('ERROR_HTTP_LINK');
+        }
+        
+        $context = stream_context_create(
+            array('http' => array(
+                'follow_location' => false, // don't follow redirects
+            ))
+        );
+        $file = fopen($imgUrl . '?' . $queryString, 'r', false, $context);
+        $img = stream_get_contents($file);
+        fclose($file);
+        preg_match('/[\/]([^\/]*)[\.]?[^\.\/]*$/', $imgUrl, $m);
+        $original = $m ? $m[1] : '';
+        $ext = strtolower(strrchr($original, '.'));
+        $title = config('ueditor.hash_filename') ? md5($original) . $ext : $original;
+        $filename = $this->formatPath($config['path_format'], $title);
+        return [
+            'state' => 'SUCCESS',
+            'url' => $this->getUrl($filename),
+            'title' => $title,
+            'original' => $original,
+            'source' => $url,
+            'size' => strlen($img),
+            'file' => $img,
+            'filename' => $filename,
+        ];
+
+    }
 
     /**
      * @return bool
@@ -149,6 +234,19 @@ protected function store(UploadedFile $file, $filename)
         return $this->disk->put($filename, fopen($file->getRealPath(), 'r+'));
     }
 
+    /**
+     * Store file from content.
+     *
+     * @param string
+     * @param string                                              $filename
+     *
+     * @return mixed
+     */
+    protected function storeContent($content, $filename)
+    {
+        return $this->disk->put($filename, $content);
+    }
+
     /**
      * Validate the input file.
      *

src/UEditorController.php

@@ -41,6 +41,8 @@ public function serve(Request $request)
                     $request->get('start'),
                     $request->get('size'),
                     $upload['fileManagerAllowFiles']);
+            case $upload['catcherActionName']:
+                return $storage->fetch($request);
             default:
                 return $storage->upload($request);
         }