Make LanguageCensor a helper

app/Helpers/LanguageCensor.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * NOTICE OF LICENSE
+ *
+ * UNIT3D is open-sourced software licensed under the GNU General Public License v3.0
+ * The details is bundled with this project in the file LICENSE.txt.
+ *
+ * @project    UNIT3D
+ * @license    https://choosealicense.com/licenses/gpl-3.0/  GNU General Public License v3.0
+ * @author     HDVinnie
+ */
+
+namespace App\Helpers;
+
+use Config;
+
+/**
+ * Class LanguageCensor
+ *
+ * A class that can redact/replace words.
+ *
+ */
+class LanguageCensor
+{
+    static protected function isSpecial($c)
+    {
+        $specialChars = " [].;,";
+        return strpos($specialChars, $c) !== false;
+    }
+
+    static protected function matchWordIndexes($string, $word)
+    {
+        $result = [];
+        $length = strlen($word);
+        $string_length = strlen($string);
+        $pos = stripos($string, $word, 0);
+        while ($pos !== false) {
+            $prev = ($pos === 0) ? ' ' : $string[$pos - 1];
+            $last = ($pos + $length) < $string_length ? $string[$pos + $length] : ' ';
+            if (self::isSpecial($prev) && self::isSpecial($last)) {
+                array_push($result, $pos);
+            }
+            $pos = stripos($string, $word, $pos + $length);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Censor a text.
+     *
+     * @param $source
+     *
+     * @return mixed
+     */
+    static public function censor($source)
+    {
+        $redactArray = Config::get('censor.redact', []);
+        foreach ($redactArray as $word) {
+            $result = "";
+            $length = strlen($source);
+            $word_length = strlen($word);
+            assert($word_length > 0);
+            $indexes = self::matchWordIndexes($source, $word);
+            $ignore = 0;
+            for ($i = 0; $i < $length; ++$i) {
+                if (count($indexes) > 0 && $indexes[0] == $i) {
+                    $match = substr($source, $indexes[0], $word_length);
+                    $result .= "<span class='censor'>{$match}</span>";
+                    $ignore = $word_length - 1;
+                } elseif ($ignore > 0) {
+                    --$ignore;
+                } else {
+                    $result .= $source[$i];
+                }
+            }
+            $source = $result;
+        }
+
+        $replaceDict = Config::get('censor.replace', []);
+        foreach ($replaceDict as $word => $replacement) {
+            $source = str_ireplace($word, $replacement, $source);
+        }
+        return $source;
+    }
+}

app/Http/Controllers/ShoutboxController.php

@@ -14,6 +14,7 @@
 
 use App\Shoutbox;
 use App\User;
+use App\Helpers\LanguageCensor;
 
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Request;
@@ -153,7 +154,7 @@ public function fetch($after = null)
                        </span>&nbsp;<span class="text-muted"><small><em>' . ($message->created_at->diffForHumans()) . '</em></small></span>
                        </h4>
                        <p class="message-content">
-                       ' . \LaravelEmojiOne::toImage(Shoutbox::getMessageHtml($message->message)) . '
+                       ' . \LaravelEmojiOne::toImage(LanguageCensor::censor(Shoutbox::getMessageHtml($message->message))) . '
                        ' . ($flag ? $delete : "") . '
                        </p></li>';
             }

resources/views/blocks/chat.blade.php

@@ -16,6 +16,11 @@
           if (in_array(\Auth::user()->id, explode(',', $message->mentions))) {
             $class = 'mentioned';
           }
+
+          $messageHtml = App\Shoutbox::getMessageHtml($message->message);
+          $messageHtml = \LaravelEmojiOne::toImage($messageHtml);
+          $messageHtml = App\Helpers\LanguageCensor::censor($messageHtml);
+
           @endphp
             <li class="list-group-item {{ $class }}">
               @if($message->poster->image != null)
@@ -36,7 +41,7 @@
                   <a title="Delete Shout" href="{{route('shout-delete',['id' => $message->id])}}"><i class="pull-right fa fa-lg fa-times"></i></a>
                 @endif
 
-                @emojione(App\Shoutbox::getMessageHtml($message->message))</p>
+                {!! $messageHtml !!}
             </li>
             @endforeach
         </ul>

routes/web.php

@@ -256,7 +256,7 @@
 | ShoutBox Routes Group (when authorized)
 |------------------------------------------
 */
-Route::group(['prefix' => 'shoutbox', 'middleware' => ['auth','censor']], function () {
+Route::group(['prefix' => 'shoutbox', 'middleware' => 'auth'], function () {
     Route::get('/', 'HomeController@home')->name('shoutbox-home');
     Route::get('/messages/{after?}', 'ShoutboxController@fetch')->name('shoutbox-fetch');
     Route::post('/send', 'ShoutboxController@send')->name('shoutbox-send');