some stuff relating to the url resolver

app/Chat/URLResolver.php

@@ -31,6 +31,100 @@ class URLResolver
         $info = new LinkInfo;
         $info->URL = $info->OriginalURL = $url;
         $info->Type = LinkInfo::TYPES['PLAIN'];
+
+        switch ($protocol) {
+            case 'http':
+            case 'https':
+                // youtube, handles .be, -nocookie.com and any possible tld and always uses -nocookie.com for the embedder
+                if (preg_match("#(?:www\.)?youtu(?:be\.(?:[a-z]{2,63})|\.be|\be-nocookie\.com)$#si", $host)) {
+                    if ($host === 'youtu.be') {
+                        $video_id = $path;
+                    } else {
+                        $split = split_query_string($query);
+
+                        if (!array_key_exists('v', $split)) {
+                            break;
+                        }
+
+                        $video_id = $split['v'];
+                    }
+
+                    $info->URL = "https://www.youtube-nocookie.com/embed/{$video_id}";
+                    $info->Type = LinkInfo::TYPES['EMBED'];
+                    $info->Width = 320;
+                    $info->Height = 240;
+                    break;
+                }
+
+                $headers = get_headers($url);
+                $data = curl_fetch($url);
+
+                if (strstr($headers[0], ' 40') !== false || strstr($headers[0], ' 50') !== false) {
+                    $info->Type = LinkInfo::TYPES['PLAIN'];
+                    break;
+                }
+
+                if (getimagesizefromstring($data) !== false) {
+                    $info->Type = LinkInfo::TYPES['IMAGE'];
+                    break;
+                }
+
+                $finfo = finfo_open(FILEINFO_MIME_TYPE);
+                $mime = finfo_buffer($finfo, $data);
+                finfo_close($finfo);
+
+                if (strstr($mime, 'audio/') !== false) {
+                    $info->Type = LinkInfo::TYPES['AUDIO'];
+
+                    if (strstr($mime, 'mp') !== false) {
+                        $info->ContentType = 'audio/mp3';
+                    } elseif (strstr($mime, 'og') !== false) {
+                        $info->ContentType = 'audio/ogg';
+                    } elseif (strstr($mime, 'webm') !== false) {
+                        $info->ContentType = 'audio/webm';
+                    } else {
+                        $info->ContentType = 'audio/wav';
+                    }
+                    break;
+                }
+
+                if (strstr($mime, 'video/') !== false) {
+                    $info->Type = LinkInfo::TYPES['VIDEO'];
+
+                    if (strstr($mime, 'og') !== false) {
+                        $info->ContentType = 'video/ogg';
+                    } elseif (strstr($mime, 'webm') !== false) {
+                        $info->ContentType = 'video/webm';
+                    } else {
+                        // just kind of assume it's mp4
+                        $info->ContentType = 'video/mp4';
+                    }
+                    break;
+                }
+
+                $tags = meta_tags($data);
+
+                $info->Image = $tags['og:image'] ?? $tags['twitter:image:src'] ?? null;
+                $info->Title = $tags['og:title'] ?? $tags['twitter:title'] ?? $tags['title'] ?? null;
+                $info->Description = $tags['og:description'] ?? $tags['twitter:description'] ?? $tags['description'] ?? null;
+
+                if ($info->Title === null && $info->Description === null) {
+                    $info->Type = LinkInfo::TYPES['PLAIN'];
+                } else {
+                    $info->Type = LinkInfo::TYPES['META'];
+                }
+                break;
+
+            case 'osu':
+                // osu!direct
+                if ($host === 'dl' || $host === 'b') {
+                    $info->Type = LinkInfo::TYPES['META'];
+                } else {
+                    $info->Type = LinkInfo::TYPES['PLAIN'];
+                }
+                break;
+        }
+
         return $info;
     }
 }

app/Controllers/ChatController.php

@@ -80,7 +80,7 @@ class ChatController extends Controller
             );
         }
 
-        return $info;
+        return $this->json($info);
     }
 
     /**
@@ -92,6 +92,15 @@ class ChatController extends Controller
         return;
     }
 
+    /**
+     * IRC page.
+     * @return string
+     */
+    public function irc()
+    {
+        return;
+    }
+
     /**
      * Legacy auth, for SockLegacy. Remove when the old chat server finally dies.
      * @return string

routes.php

@@ -67,7 +67,7 @@ Router::group(['before' => 'maintenance'], function () {
             'welcome' => 'info.welcome',
             //'profileapi' => 'api.manage.index',
             'chat' => 'chat.redirect',
-            //'irc' => 'chat.irc',
+            'irc' => 'chat.irc',
             'feedback' => 'forums.index',
             'mcp' => 'manage.index',
             'mcptest' => 'manage.index',
@@ -111,7 +111,8 @@ Router::group(['before' => 'maintenance'], function () {
         Router::get('/redirect', 'ChatController@redirect', 'chat.redirect');
         Router::get('/settings', 'ChatController@settings', 'chat.settings');
         Router::get('/auth', 'ChatController@auth', 'chat.auth');
-        Router::get('/resolve', 'Chatcontroller@resolve', 'chat.resolve');
+        Router::get('/resolve', 'ChatController@resolve', 'chat.resolve');
+        Router::get('/irc', 'ChatController@irc', 'chat.irc');
     });
 
     // Authentication for the "old" chat