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Attachment.php
256 lines
| 1 | <?php |
| 2 | |
| 3 | namespace PrestoPlayer; |
| 4 | |
| 5 | use PrestoPlayer\Services\AdminNotices; |
| 6 | use PrestoPlayer\Services\VideoStreamer; |
| 7 | |
| 8 | class Attachment |
| 9 | { |
| 10 | protected $is_premium; |
| 11 | |
| 12 | public function __construct($is_premium = false) |
| 13 | { |
| 14 | $this->is_premium = $is_premium; |
| 15 | } |
| 16 | |
| 17 | public function register() |
| 18 | { |
| 19 | if ($this->is_premium) { |
| 20 | add_action('admin_notices', [$this, 'checkServer']); |
| 21 | } |
| 22 | add_action('wp_get_attachment_url', [$this, 'replaceLink'], 10, 2); |
| 23 | add_action('query_vars', [$this, 'addQueryVars']); |
| 24 | add_action('generate_rewrite_rules', [$this, 'customRewriteRules']); |
| 25 | add_action('template_redirect', [$this, 'loadVirtualPage']); |
| 26 | add_action('wp_ajax_presto_player_load_user_video', [$this, 'refreshAjaxTempSecurityUser']); |
| 27 | |
| 28 | return $this; |
| 29 | } |
| 30 | |
| 31 | public function refreshAjaxTempSecurityUser($action) |
| 32 | { |
| 33 | if (empty($_POST['type'])) { |
| 34 | wp_send_json_error('type not set'); |
| 35 | } |
| 36 | |
| 37 | if (!defined('DOING_AJAX') && !is_user_logged_in()) { |
| 38 | wp_redirect(home_url()); |
| 39 | exit(); |
| 40 | } |
| 41 | |
| 42 | check_ajax_referer('presto_player'); |
| 43 | |
| 44 | if ($_POST['type'] === 'private-hosted') { |
| 45 | if (isset($_POST['id'])) { |
| 46 | $post_id = (int) $_POST['id']; |
| 47 | $this->setVideoTransient((int)$post_id); |
| 48 | wp_send_json_success($this->getSrc((int)$post_id, true)); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | if (!$this->is_premium) { |
| 53 | wp_send_json_success(); |
| 54 | return; |
| 55 | } |
| 56 | |
| 57 | wp_send_json_success(); |
| 58 | } |
| 59 | |
| 60 | public function getTransientKey() |
| 61 | { |
| 62 | $current_user = wp_get_current_user(); |
| 63 | return 'presto-player-user-' . $current_user->ID; |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Adds query vars for rewrites |
| 68 | * |
| 69 | * @param array $query_vars |
| 70 | * @return array |
| 71 | */ |
| 72 | public function addQueryVars($query_vars) |
| 73 | { |
| 74 | $query_vars[] = 'presto-player-video'; |
| 75 | $query_vars[] = 'presto-player-token'; |
| 76 | return $query_vars; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Add custom rewrite rules |
| 81 | * |
| 82 | * @param \WP_Rewrite $wp_rewrite |
| 83 | * @return void |
| 84 | */ |
| 85 | public function customRewriteRules($wp_rewrite) |
| 86 | { |
| 87 | $wp_rewrite->rules = array_merge( |
| 88 | ['video-src/([^/]*)/(\d+)/?$' => 'index.php?presto-player-token=$matches[1]&presto-player-video=$matches[2]'], |
| 89 | $wp_rewrite->rules |
| 90 | ); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Load virtual template to stream video by id |
| 95 | */ |
| 96 | public function loadVirtualPage() |
| 97 | { |
| 98 | // get video attachment id |
| 99 | $video_id = intval(get_query_var('presto-player-video')); |
| 100 | // get the token |
| 101 | $token = sanitize_text_field(get_query_var('presto-player-token')); |
| 102 | |
| 103 | if ($video_id && $token) { |
| 104 | if (!is_user_logged_in()) { |
| 105 | wp_die('Access denied! :(', 'Access Denied', ['response' => 403]); |
| 106 | } |
| 107 | $this->checkAndLoadStream(wp_get_current_user(), $video_id, $token); |
| 108 | die; |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Check the server |
| 114 | * |
| 115 | * @return void |
| 116 | */ |
| 117 | public function checkServer() |
| 118 | { |
| 119 | // check for nginx |
| 120 | $notice_name = 'nginx_rules'; |
| 121 | $server_software = isset($_SERVER['SERVER_SOFTWARE']) ? sanitize_text_field(wp_unslash($_SERVER['SERVER_SOFTWARE'])) : false; |
| 122 | if (!stristr($server_software, 'nginx')) { |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | if (current_user_can('install_plugins') && !AdminNotices::isDismissed($notice_name)) { |
| 127 | $this->showNotice($notice_name); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | public function showNotice($notice_name) |
| 132 | { |
| 133 | ob_start(); ?> |
| 134 | |
| 135 | <div class="error"> |
| 136 | <h3>Presto Player</h3> |
| 137 | <p><?php printf(__('The video files in the %s folder are not currently protected due to your site running on NGINX.', 'presto-player'), '<strong>presto-player-private</strong>'); ?></p> |
| 138 | <p><?php _e('If you plan on using private video, you will want to protect this directory. To protect them, you must add a firewall rule as explained in <a href="https://prestoplayer.com/protecting-videos-with-nginx" target="_blank">this guide</a>.', 'presto-player'); ?></p> |
| 139 | <p><?php _e('If you have already added the rule, you may safely dismiss this notice', 'presto-player'); ?></p> |
| 140 | <p><a href="<?php echo esc_url(add_query_arg(array('presto_action' => 'dismiss_notices', 'presto_notice' => $notice_name))); ?>"><?php _e('Dismiss Notice', 'presto-player'); ?></a></p> |
| 141 | </div> |
| 142 | |
| 143 | <?php echo ob_get_clean(); |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Sets the transient for video access |
| 148 | * Sets this for 24 hours |
| 149 | * |
| 150 | * @param integer $post_id |
| 151 | * @return void |
| 152 | */ |
| 153 | public function setVideoTransient($post_id) |
| 154 | { |
| 155 | $videos = (array) get_transient($this->getTransientKey()); |
| 156 | $videos[] = sanitize_text_field($post_id); |
| 157 | |
| 158 | // set temporary user transient for access for 1 hour |
| 159 | set_transient($this->getTransientKey(), array_filter(array_unique($videos)), 24 * HOUR_IN_SECONDS); |
| 160 | } |
| 161 | |
| 162 | public static function getSrc($id, $private = false) |
| 163 | { |
| 164 | if ($private) { |
| 165 | return self::getPrivateSrc($id); |
| 166 | } |
| 167 | return wp_get_attachment_url($id); |
| 168 | } |
| 169 | |
| 170 | public static function getPublicSrc($id) |
| 171 | { |
| 172 | global $presto_override_private_url; |
| 173 | $old = $presto_override_private_url; |
| 174 | $presto_override_private_url = true; |
| 175 | $url = wp_get_attachment_url($id); |
| 176 | $presto_override_private_url = $old; |
| 177 | return $url; |
| 178 | } |
| 179 | |
| 180 | public static function isPrivate($id) |
| 181 | { |
| 182 | return strpos(wp_get_attachment_url($id), 'video-src'); |
| 183 | } |
| 184 | |
| 185 | public static function getPrivateSrc($id) |
| 186 | { |
| 187 | // set temporary user transient for access for 1 hour |
| 188 | (new self())->setVideoTransient($id); |
| 189 | if (!get_option('permalink_structure')) { |
| 190 | return sprintf(site_url('?presto-player-video=%d&presto-player-token=%s'), $id, wp_create_nonce('presto-player-user-token')); |
| 191 | } |
| 192 | return sprintf(site_url('video-src/%s/%d'), wp_create_nonce('presto-player-user-token'), $id); |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Replaces attachment link |
| 197 | * |
| 198 | * @param [type] $url |
| 199 | * @param [type] $post_id |
| 200 | * @return void |
| 201 | */ |
| 202 | public function replaceLink($url, $post_id) |
| 203 | { |
| 204 | global $presto_override_private_url; |
| 205 | |
| 206 | // only replace for our folder |
| 207 | if (!stristr($url, 'presto-player-private')) { |
| 208 | return $url; |
| 209 | } |
| 210 | |
| 211 | if (!$presto_override_private_url) { |
| 212 | return self::getPrivateSrc($post_id); |
| 213 | } else { |
| 214 | return $url; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Check and load stream through PHP |
| 220 | * |
| 221 | * @param \WP_User $current_user |
| 222 | * @param integer $attachment_id |
| 223 | * @param string $token |
| 224 | * @return void |
| 225 | */ |
| 226 | public function checkAndLoadStream($current_user, $attachment_id, $token) |
| 227 | { |
| 228 | $security_token = isset($token) ? wp_verify_nonce($token, 'presto-player-user-token') : false; |
| 229 | $temp_security_user = get_transient($this->getTransientKey()); |
| 230 | |
| 231 | /** |
| 232 | * Start video stream with the correct video SRC only in case of pass security rules |
| 233 | */ |
| 234 | if ($security_token && $temp_security_user && $attachment_id > 0 && in_array($attachment_id, $temp_security_user)) { |
| 235 | $video_file = get_attached_file($attachment_id); |
| 236 | |
| 237 | /** |
| 238 | * Start video stream to show the video |
| 239 | */ |
| 240 | $video_stream = new VideoStreamer($video_file); |
| 241 | $video_stream->start(); |
| 242 | exit(); |
| 243 | } else { |
| 244 | |
| 245 | /** |
| 246 | * Alert user about the misconduct by accessing directly |
| 247 | */ |
| 248 | $message = sprintf( |
| 249 | __('Sorry %1$s! Access to this video is not allowed. An administrator will be informed.', 'presto-player'), |
| 250 | ucfirst($current_user->display_name) |
| 251 | ); |
| 252 | wp_die($message, __('Forbidden', 'presto-player'), 403); |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 |