Merge pull request #81 from danielduggin2/UTCT-69-Youtube-titles

Added YouTube Plugins

user/plugins/fix-youtube-titles/LICENSE

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+MIT License
+
+Copyright (c) 2013-present, The YOURLS Contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

user/plugins/fix-youtube-titles/README.md

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+# Fix Youtube titles [![Listed in Awesome YOURLS!](https://img.shields.io/badge/Awesome-YOURLS-C5A3BE)](https://github.com/YOURLS/awesome-yourls/)
+
+_Without this plugin_, shortening a Youtube URL returns an incorrect title: <kbd>Before you continue to YouTube</kbd> (read why below)
+
+**With this plugin**, you get the correct title, ie <kbd>Backyard Squirrel Maze 1.0- Ninja Warrior Course - YouTube</kbd>
+
+Tested with [YOURLS](https://yourls.org) `1.8.1` and above.
+
+## Installation
+
+1. In `/user/plugins`, create a new folder named `fix-youtube-titles` or something like this
+2. Drop these files in that directory.
+3. Go to the Plugins administration page (eg. `http://sho.rt/admin/plugins.php`) and activate the plugin.
+4. Have fun!
+
+## License
+
+Do what the hell you want with it.
+
+## Why is this needed?
+
+Youtube redirects every unknown user to a page where they need to accept their darn cookies:
+
+<img src="https://user-images.githubusercontent.com/223647/120112768-85809e80-c177-11eb-952a-d1ab429be086.png" width="300px" />
+
+Your YOURLS instance is such an _unknown_ user to Google, since it has no Youtube cookie. This plugin tricks Youtube and makes it think it has one.
+
+🍪 FTW.

user/plugins/fix-youtube-titles/plugin.php

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+<?php
+/*
+Plugin Name: Fix Youtube titles
+Plugin URI: https://github.com/ozh/fix-youtube-titles/
+Description: Get correct Youtube video titles
+Version: 1.0
+Author: Ozh
+Author URI: http://ozh.org/
+*/
+
+// No direct call
+if( !defined( 'YOURLS_ABSPATH' ) ) die();
+
+// Add filters if we're trying to get a page title from Youtube
+yourls_add_filter('shunt_get_remote_title', 'ozh_is_youtube_url');
+function ozh_is_youtube_url($false, $url) {
+    // is this a youtube.com URL ?
+    if( strpos($url, 'youtube.com') > 0 ) {
+        // change user agent to "curl". Actually, this is enough to trick Youtube ¯\_(ツ)_/¯
+        yourls_add_filter('http_user_agent', function(){return 'curl/7.68.0';});
+
+        // The <title> tag in Youtube pages is buried down the page : lift limit of bytes retrieved
+        yourls_add_filter('get_remote_title_max_byte', function(){return '';});
+
+        // Extra trick : fake the cookie that Youtube expects (requires YOURLS 1.8.2+)
+        yourls_add_filter('http_request_headers', 'ozh_youtube_add_consent');
+    }
+
+    // We don't want to actually interrupt the flow of event so we return false
+    return $false;
+}
+
+// Add a cookie header to the HTTP request
+function ozh_youtube_add_consent($in) {
+    $in['Cookie']='CONSENT=YES+1337';
+    return $in;
+}