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1 <?php 2 /** 3 * @package Akismet 4 */ 5 /* 6 Plugin Name: Akismet 7 Plugin URI: http://akismet.com/ 8 Description: Akismet checks your comments against the Akismet web service to see if they look like spam or not. You need an <a href="http://akismet.com/get/">API key</a> to use it. You can review the spam it catches under "Comments." To show off your Akismet stats just put <code><?php akismet_counter(); ?></code> in your template. See also: <a href="http://wordpress.org/extend/plugins/stats/">WP Stats plugin</a>. 9 Version: 2.4.0 10 Author: Automattic 11 Author URI: http://automattic.com/wordpress-plugins/ 12 License: GPLv2 13 */ 14 15 /* 16 This program is free software; you can redistribute it and/or modify 17 it under the terms of the GNU General Public License as published by 18 the Free Software Foundation; version 2 of the License. 19 20 This program is distributed in the hope that it will be useful, 21 but WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 GNU General Public License for more details. 24 25 You should have received a copy of the GNU General Public License 26 along with this program; if not, write to the Free Software 27 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 28 */ 29 30 define('AKISMET_VERSION', '2.4.0'); 31 32 /** If you hardcode a WP.com API key here, all key config screens will be hidden */ 33 if ( defined('WPCOM_API_KEY') ) 34 $wpcom_api_key = constant('WPCOM_API_KEY'); 35 else 36 $wpcom_api_key = ''; 37 38 // Make sure we don't expose any info if called directly 39 if ( !function_exists( 'add_action' ) ) { 40 echo "Hi there! I'm just a plugin, not much I can do when called directly."; 41 exit; 42 } 43 44 if ( $wp_db_version <= 9872 ) 45 include_once( dirname(__FILE__) . '/legacy.php' ); 46 47 function akismet_init() { 48 global $wpcom_api_key, $akismet_api_host, $akismet_api_port; 49 50 if ( $wpcom_api_key ) 51 $akismet_api_host = $wpcom_api_key . '.rest.akismet.com'; 52 else 53 $akismet_api_host = get_option('wordpress_api_key') . '.rest.akismet.com'; 54 55 $akismet_api_port = 80; 56 add_action('admin_menu', 'akismet_config_page'); 57 add_action('admin_menu', 'akismet_stats_page'); 58 akismet_admin_warnings(); 59 } 60 add_action('init', 'akismet_init'); 61 62 function akismet_admin_init() { 63 if ( function_exists( 'get_plugin_page_hook' ) ) 64 $hook = get_plugin_page_hook( 'akismet-stats-display', 'index.php' ); 65 else 66 $hook = 'dashboard_page_akismet-stats-display'; 67 add_action('admin_head-'.$hook, 'akismet_stats_script'); 68 } 69 add_action('admin_init', 'akismet_admin_init'); 70 71 if ( !function_exists('wp_nonce_field') ) { 72 function akismet_nonce_field($action = -1) { return; } 73 $akismet_nonce = -1; 74 } else { 75 function akismet_nonce_field($action = -1) { return wp_nonce_field($action); } 76 $akismet_nonce = 'akismet-update-key'; 77 } 78 79 if ( !function_exists('number_format_i18n') ) { 80 function number_format_i18n( $number, $decimals = null ) { return number_format( $number, $decimals ); } 81 } 82 83 function akismet_config_page() { 84 if ( function_exists('add_submenu_page') ) 85 add_submenu_page('plugins.php', __('Akismet Configuration'), __('Akismet Configuration'), 'manage_options', 'akismet-key-config', 'akismet_conf'); 86 87 } 88 89 function akismet_conf() { 90 global $akismet_nonce, $wpcom_api_key; 91 92 if ( isset($_POST['submit']) ) { 93 if ( function_exists('current_user_can') && !current_user_can('manage_options') ) 94 die(__('Cheatin’ uh?')); 95 96 check_admin_referer( $akismet_nonce ); 97 $key = preg_replace( '/[^a-h0-9]/i', '', $_POST['key'] ); 98 99 if ( empty($key) ) { 100 $key_status = 'empty'; 101 $ms[] = 'new_key_empty'; 102 delete_option('wordpress_api_key'); 103 } else { 104 $key_status = akismet_verify_key( $key ); 105 } 106 107 if ( $key_status == 'valid' ) { 108 update_option('wordpress_api_key', $key); 109 $ms[] = 'new_key_valid'; 110 } else if ( $key_status == 'invalid' ) { 111 $ms[] = 'new_key_invalid'; 112 } else if ( $key_status == 'failed' ) { 113 $ms[] = 'new_key_failed'; 114 } 115 116 if ( isset( $_POST['akismet_discard_month'] ) ) 117 update_option( 'akismet_discard_month', 'true' ); 118 else 119 update_option( 'akismet_discard_month', 'false' ); 120 } elseif ( isset($_POST['check']) ) { 121 akismet_get_server_connectivity(0); 122 } 123 124 if ( empty( $key_status) || $key_status != 'valid' ) { 125 $key = get_option('wordpress_api_key'); 126 if ( empty( $key ) ) { 127 if ( empty( $key_status ) || $key_status != 'failed' ) { 128 if ( akismet_verify_key( '1234567890ab' ) == 'failed' ) 129 $ms[] = 'no_connection'; 130 else 131 $ms[] = 'key_empty'; 132 } 133 $key_status = 'empty'; 134 } else { 135 $key_status = akismet_verify_key( $key ); 136 } 137 if ( $key_status == 'valid' ) { 138 $ms[] = 'key_valid'; 139 } else if ( $key_status == 'invalid' ) { 140 delete_option('wordpress_api_key'); 141 $ms[] = 'key_empty'; 142 } else if ( !empty($key) && $key_status == 'failed' ) { 143 $ms[] = 'key_failed'; 144 } 145 } 146 147 $messages = array( 148 'new_key_empty' => array('color' => 'aa0', 'text' => __('Your key has been cleared.')), 149 'new_key_valid' => array('color' => '2d2', 'text' => __('Your key has been verified. Happy blogging!')), 150 'new_key_invalid' => array('color' => 'd22', 'text' => __('The key you entered is invalid. Please double-check it.')), 151 'new_key_failed' => array('color' => 'd22', 'text' => __('The key you entered could not be verified because a connection to akismet.com could not be established. Please check your server configuration.')), 152 'no_connection' => array('color' => 'd22', 'text' => __('There was a problem connecting to the Akismet server. Please check your server configuration.')), 153 'key_empty' => array('color' => 'aa0', 'text' => sprintf(__('Please enter an API key. (<a href="%s" style="color:#fff">Get your key.</a>)'), 'http://akismet.com/get/')), 154 'key_valid' => array('color' => '2d2', 'text' => __('This key is valid.')), 155 'key_failed' => array('color' => 'aa0', 'text' => __('The key below was previously validated but a connection to akismet.com can not be established at this time. Please check your server configuration.'))); 156 ?> 157 <?php if ( !empty($_POST['submit'] ) ) : ?> 158 <div id="message" class="updated fade"><p><strong><?php _e('Options saved.') ?></strong></p></div> 159 <?php endif; ?> 160 <div class="wrap"> 161 <h2><?php _e('Akismet Configuration'); ?></h2> 162 <div class="narrow"> 163 <form action="" method="post" id="akismet-conf" style="margin: auto; width: 400px; "> 164 <?php if ( !$wpcom_api_key ) { ?> 165 <p><?php printf(__('For many people, <a href="%1$s">Akismet</a> will greatly reduce or even completely eliminate the comment and trackback spam you get on your site. If one does happen to get through, simply mark it as "spam" on the moderation screen and Akismet will learn from the mistakes. If you don\'t have an API key yet, you can get one at <a href="%2$s">Akismet.com</a>.'), 'http://akismet.com/', 'http://akismet.com/get/'); ?></p> 166 167 <h3><label for="key"><?php _e('Akismet API Key'); ?></label></h3> 168 <?php foreach ( $ms as $m ) : ?> 169 <p style="padding: .5em; background-color: #<?php echo $messages[$m]['color']; ?>; color: #fff; font-weight: bold;"><?php echo $messages[$m]['text']; ?></p> 170 <?php endforeach; ?> 171 <p><input id="key" name="key" type="text" size="15" maxlength="12" value="<?php echo get_option('wordpress_api_key'); ?>" style="font-family: 'Courier New', Courier, mono; font-size: 1.5em;" /> (<?php _e('<a href="http://akismet.com/get/">What is this?</a>'); ?>)</p> 172 <?php if ( isset( $invalid_key) && $invalid_key ) { ?> 173 <h3><?php _e('Why might my key be invalid?'); ?></h3> 174 <p><?php _e('This can mean one of two things, either you copied the key wrong or that the plugin is unable to reach the Akismet servers, which is most often caused by an issue with your web host around firewalls or similar.'); ?></p> 175 <?php } ?> 176 <?php } ?> 177 <?php akismet_nonce_field($akismet_nonce) ?> 178 <p><label><input name="akismet_discard_month" id="akismet_discard_month" value="true" type="checkbox" <?php if ( get_option('akismet_discard_month') == 'true' ) echo ' checked="checked" '; ?> /> <?php _e('Automatically discard spam comments on posts older than a month.'); ?></label></p> 179 <p class="submit"><input type="submit" name="submit" value="<?php _e('Update options »'); ?>" /></p> 180 </form> 181 182 <form action="" method="post" id="akismet-connectivity" style="margin: auto; width: 400px; "> 183 184 <h3><?php _e('Server Connectivity'); ?></h3> 185 <?php 186 if ( !function_exists('fsockopen') || !function_exists('gethostbynamel') ) { 187 ?> 188 <p style="padding: .5em; background-color: #d22; color: #fff; font-weight:bold;"><?php _e('Network functions are disabled.'); ?></p> 189 <p><?php echo sprintf( __('Your web host or server administrator has disabled PHP\'s <code>fsockopen</code> or <code>gethostbynamel</code> functions. <strong>Akismet cannot work correctly until this is fixed.</strong> Please contact your web host or firewall administrator and give them <a href="%s" target="_blank">this information about Akismet\'s system requirements</a>.'), 'http://blog.akismet.com/akismet-hosting-faq/'); ?></p> 190 <?php 191 } else { 192 $servers = akismet_get_server_connectivity(); 193 $fail_count = count($servers) - count( array_filter($servers) ); 194 if ( is_array($servers) && count($servers) > 0 ) { 195 // some connections work, some fail 196 if ( $fail_count > 0 && $fail_count < count($servers) ) { ?> 197 <p style="padding: .5em; background-color: #aa0; color: #fff; font-weight:bold;"><?php _e('Unable to reach some Akismet servers.'); ?></p> 198 <p><?php echo sprintf( __('A network problem or firewall is blocking some connections from your web server to Akismet.com. Akismet is working but this may cause problems during times of network congestion. Please contact your web host or firewall administrator and give them <a href="%s" target="_blank">this information about Akismet and firewalls</a>.'), 'http://blog.akismet.com/akismet-hosting-faq/'); ?></p> 199 <?php 200 // all connections fail 201 } elseif ( $fail_count > 0 ) { ?> 202 <p style="padding: .5em; background-color: #d22; color: #fff; font-weight:bold;"><?php _e('Unable to reach any Akismet servers.'); ?></p> 203 <p><?php echo sprintf( __('A network problem or firewall is blocking all connections from your web server to Akismet.com. <strong>Akismet cannot work correctly until this is fixed.</strong> Please contact your web host or firewall administrator and give them <a href="%s" target="_blank">this information about Akismet and firewalls</a>.'), 'http://blog.akismet.com/akismet-hosting-faq/'); ?></p> 204 <?php 205 // all connections work 206 } else { ?> 207 <p style="padding: .5em; background-color: #2d2; color: #fff; font-weight:bold;"><?php _e('All Akismet servers are available.'); ?></p> 208 <p><?php _e('Akismet is working correctly. All servers are accessible.'); ?></p> 209 <?php 210 } 211 } else { 212 ?> 213 <p style="padding: .5em; background-color: #d22; color: #fff; font-weight:bold;"><?php _e('Unable to find Akismet servers.'); ?></p> 214 <p><?php echo sprintf( __('A DNS problem or firewall is preventing all access from your web server to Akismet.com. <strong>Akismet cannot work correctly until this is fixed.</strong> Please contact your web host or firewall administrator and give them <a href="%s" target="_blank">this information about Akismet and firewalls</a>.'), 'http://blog.akismet.com/akismet-hosting-faq/'); ?></p> 215 <?php 216 } 217 } 218 219 if ( !empty($servers) ) { 220 ?> 221 <table style="width: 100%;"> 222 <thead><th><?php _e('Akismet server'); ?></th><th><?php _e('Network Status'); ?></th></thead> 223 <tbody> 224 <?php 225 asort($servers); 226 foreach ( $servers as $ip => $status ) { 227 $color = ( $status ? '#2d2' : '#d22'); 228 ?> 229 <tr> 230 <td><?php echo htmlspecialchars($ip); ?></td> 231 <td style="padding: 0 .5em; font-weight:bold; color: #fff; background-color: <?php echo $color; ?>"><?php echo ($status ? __('No problems') : __('Obstructed') ); ?></td> 232 233 <?php 234 } 235 } 236 ?> 237 </tbody> 238 </table> 239 <p><?php if ( get_option('akismet_connectivity_time') ) echo sprintf( __('Last checked %s ago.'), human_time_diff( get_option('akismet_connectivity_time') ) ); ?></p> 240 <p class="submit"><input type="submit" name="check" value="<?php _e('Check network status »'); ?>" /></p> 241 </form> 242 243 </div> 244 </div> 245 <?php 246 } 247 248 function akismet_stats_page() { 249 if ( function_exists('add_submenu_page') ) 250 add_submenu_page('index.php', __('Akismet Stats'), __('Akismet Stats'), 'manage_options', 'akismet-stats-display', 'akismet_stats_display'); 251 252 } 253 254 function akismet_stats_script() { 255 ?> 256 <script type="text/javascript"> 257 function resizeIframe() { 258 var height = document.documentElement.clientHeight; 259 height -= document.getElementById('akismet-stats-frame').offsetTop; 260 height += 100; // magic padding 261 262 document.getElementById('akismet-stats-frame').style.height = height +"px"; 263 264 }; 265 function resizeIframeInit() { 266 document.getElementById('akismet-stats-frame').onload = resizeIframe; 267 window.onresize = resizeIframe; 268 } 269 addLoadEvent(resizeIframeInit); 270 </script><?php 271 } 272 273 274 function akismet_stats_display() { 275 global $akismet_api_host, $akismet_api_port, $wpcom_api_key; 276 $blog = urlencode( get_option('home') ); 277 $url = "http://".akismet_get_key().".web.akismet.com/1.0/user-stats.php?blog={$blog}"; 278 ?> 279 <div class="wrap"> 280 <iframe src="<?php echo $url; ?>" width="100%" height="100%" frameborder="0" id="akismet-stats-frame"></iframe> 281 </div> 282 <?php 283 } 284 285 function akismet_stats() { 286 if ( !function_exists('did_action') || did_action( 'rightnow_end' ) ) // We already displayed this info in the "Right Now" section 287 return; 288 if ( !$count = get_option('akismet_spam_count') ) 289 return; 290 $path = plugin_basename(__FILE__); 291 echo '<h3>'.__('Spam').'</h3>'; 292 global $submenu; 293 if ( isset( $submenu['edit-comments.php'] ) ) 294 $link = 'edit-comments.php'; 295 else 296 $link = 'edit.php'; 297 echo '<p>'.sprintf(__('<a href="%1$s">Akismet</a> has protected your site from <a href="%2$s">%3$s spam comments</a>.'), 'http://akismet.com/', clean_url("$link?page=akismet-admin"), number_format_i18n($count) ).'</p>'; 298 } 299 add_action('activity_box_end', 'akismet_stats'); 300 301 function akismet_get_key() { 302 global $wpcom_api_key; 303 if ( !empty($wpcom_api_key) ) 304 return $wpcom_api_key; 305 return get_option('wordpress_api_key'); 306 } 307 308 function akismet_verify_key( $key, $ip = null ) { 309 global $akismet_api_host, $akismet_api_port, $wpcom_api_key; 310 $blog = urlencode( get_option('home') ); 311 if ( $wpcom_api_key ) 312 $key = $wpcom_api_key; 313 $response = akismet_http_post("key=$key&blog=$blog", 'rest.akismet.com', '/1.1/verify-key', $akismet_api_port, $ip); 314 if ( !is_array($response) || !isset($response[1]) || $response[1] != 'valid' && $response[1] != 'invalid' ) 315 return 'failed'; 316 return $response[1]; 317 } 318 319 // Check connectivity between the WordPress blog and Akismet's servers. 320 // Returns an associative array of server IP addresses, where the key is the IP address, and value is true (available) or false (unable to connect). 321 function akismet_check_server_connectivity() { 322 global $akismet_api_host, $akismet_api_port, $wpcom_api_key; 323 324 $test_host = 'rest.akismet.com'; 325 326 // Some web hosts may disable one or both functions 327 if ( !function_exists('fsockopen') || !function_exists('gethostbynamel') ) 328 return array(); 329 330 $ips = gethostbynamel($test_host); 331 if ( !$ips || !is_array($ips) || !count($ips) ) 332 return array(); 333 334 $servers = array(); 335 foreach ( $ips as $ip ) { 336 $response = akismet_verify_key( akismet_get_key(), $ip ); 337 // even if the key is invalid, at least we know we have connectivity 338 if ( $response == 'valid' || $response == 'invalid' ) 339 $servers[$ip] = true; 340 else 341 $servers[$ip] = false; 342 } 343 344 return $servers; 345 } 346 347 // Check the server connectivity and store the results in an option. 348 // Cached results will be used if not older than the specified timeout in seconds; use $cache_timeout = 0 to force an update. 349 // Returns the same associative array as akismet_check_server_connectivity() 350 function akismet_get_server_connectivity( $cache_timeout = 86400 ) { 351 $servers = get_option('akismet_available_servers'); 352 if ( (time() - get_option('akismet_connectivity_time') < $cache_timeout) && $servers !== false ) 353 return $servers; 354 355 // There's a race condition here but the effect is harmless. 356 $servers = akismet_check_server_connectivity(); 357 update_option('akismet_available_servers', $servers); 358 update_option('akismet_connectivity_time', time()); 359 return $servers; 360 } 361 362 // Returns true if server connectivity was OK at the last check, false if there was a problem that needs to be fixed. 363 function akismet_server_connectivity_ok() { 364 // skip the check on WPMU because the status page is hidden 365 global $wpcom_api_key; 366 if ( $wpcom_api_key ) 367 return true; 368 $servers = akismet_get_server_connectivity(); 369 return !( empty($servers) || !count($servers) || count( array_filter($servers) ) < count($servers) ); 370 } 371 372 function akismet_admin_warnings() { 373 global $wpcom_api_key; 374 if ( !get_option('wordpress_api_key') && !$wpcom_api_key && !isset($_POST['submit']) ) { 375 function akismet_warning() { 376 echo " 377 <div id='akismet-warning' class='updated fade'><p><strong>".__('Akismet is almost ready.')."</strong> ".sprintf(__('You must <a href="%1$s">enter your Akismet API key</a> for it to work.'), "plugins.php?page=akismet-key-config")."</p></div> 378 "; 379 } 380 add_action('admin_notices', 'akismet_warning'); 381 return; 382 } elseif ( get_option('akismet_connectivity_time') && empty($_POST) && is_admin() && !akismet_server_connectivity_ok() ) { 383 function akismet_warning() { 384 echo " 385 <div id='akismet-warning' class='updated fade'><p><strong>".__('Akismet has detected a problem.')."</strong> ".sprintf(__('A server or network problem is preventing Akismet from working correctly. <a href="%1$s">Click here for more information</a> about how to fix the problem.'), "plugins.php?page=akismet-key-config")."</p></div> 386 "; 387 } 388 add_action('admin_notices', 'akismet_warning'); 389 return; 390 } 391 } 392 393 function akismet_get_host($host) { 394 // if all servers are accessible, just return the host name. 395 // if not, return an IP that was known to be accessible at the last check. 396 if ( akismet_server_connectivity_ok() ) { 397 return $host; 398 } else { 399 $ips = akismet_get_server_connectivity(); 400 // a firewall may be blocking access to some Akismet IPs 401 if ( count($ips) > 0 && count(array_filter($ips)) < count($ips) ) { 402 // use DNS to get current IPs, but exclude any known to be unreachable 403 $dns = (array)gethostbynamel( rtrim($host, '.') . '.' ); 404 $dns = array_filter($dns); 405 foreach ( $dns as $ip ) { 406 if ( array_key_exists( $ip, $ips ) && empty( $ips[$ip] ) ) 407 unset($dns[$ip]); 408 } 409 // return a random IP from those available 410 if ( count($dns) ) 411 return $dns[ array_rand($dns) ]; 412 413 } 414 } 415 // if all else fails try the host name 416 return $host; 417 } 418 419 // return a comma-separated list of role names for the given user 420 function akismet_get_user_roles($user_id ) { 421 $roles = false; 422 423 if ( !class_exists('WP_User') ) 424 return false; 425 426 if ( $user_id > 0 ) { 427 $comment_user = new WP_User($user_id); 428 if ( isset($comment_user->roles) ) 429 $roles = join(',', $comment_user->roles); 430 } 431 432 return $roles; 433 } 434 435 // Returns array with headers in $response[0] and body in $response[1] 436 function akismet_http_post($request, $host, $path, $port = 80, $ip=null) { 437 global $wp_version; 438 439 $akismet_version = constant('AKISMET_VERSION'); 440 441 $http_request = "POST $path HTTP/1.0\r\n"; 442 $http_request .= "Host: $host\r\n"; 443 $http_request .= "Content-Type: application/x-www-form-urlencoded; charset=" . get_option('blog_charset') . "\r\n"; 444 $http_request .= "Content-Length: " . strlen($request) . "\r\n"; 445 $http_request .= "User-Agent: WordPress/$wp_version | Akismet/$akismet_version\r\n"; 446 $http_request .= "\r\n"; 447 $http_request .= $request; 448 449 $http_host = $host; 450 // use a specific IP if provided - needed by akismet_check_server_connectivity() 451 if ( $ip && long2ip(ip2long($ip)) ) { 452 $http_host = $ip; 453 } else { 454 $http_host = akismet_get_host($host); 455 } 456 457 $response = ''; 458 if( false != ( $fs = @fsockopen($http_host, $port, $errno, $errstr, 10) ) ) { 459 fwrite($fs, $http_request); 460 461 while ( !feof($fs) ) 462 $response .= fgets($fs, 1160); // One TCP-IP packet 463 fclose($fs); 464 $response = explode("\r\n\r\n", $response, 2); 465 } 466 return $response; 467 } 468 469 // filter handler used to return a spam result to pre_comment_approved 470 function akismet_result_spam( $approved ) { 471 // bump the counter here instead of when the filter is added to reduce the possibility of overcounting 472 if ( $incr = apply_filters('akismet_spam_count_incr', 1) ) 473 update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr ); 474 return 'spam'; 475 } 476 477 function akismet_auto_check_comment( $commentdata ) { 478 global $akismet_api_host, $akismet_api_port; 479 480 $comment = $commentdata; 481 $comment['user_ip'] = $_SERVER['REMOTE_ADDR']; 482 $comment['user_agent'] = $_SERVER['HTTP_USER_AGENT']; 483 $comment['referrer'] = $_SERVER['HTTP_REFERER']; 484 $comment['blog'] = get_option('home'); 485 $comment['blog_lang'] = get_locale(); 486 $comment['blog_charset'] = get_option('blog_charset'); 487 $comment['permalink'] = get_permalink($comment['comment_post_ID']); 488 489 $comment['user_role'] = akismet_get_user_roles($comment['user_ID']); 490 491 $ignore = array( 'HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW' ); 492 493 foreach ( $_SERVER as $key => $value ) 494 if ( !in_array( $key, $ignore ) && is_string($value) ) 495 $comment["$key"] = $value; 496 else 497 $comment["$key"] = ''; 498 499 $query_string = ''; 500 foreach ( $comment as $key => $data ) 501 $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&'; 502 503 $response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port); 504 $commentdata['akismet_result'] = $response[1]; 505 if ( 'true' == $response[1] ) { 506 // akismet_spam_count will be incremented later by akismet_result_spam() 507 add_filter('pre_comment_approved', 'akismet_result_spam'); 508 509 do_action( 'akismet_spam_caught' ); 510 511 $post = get_post( $comment['comment_post_ID'] ); 512 $last_updated = strtotime( $post->post_modified_gmt ); 513 $diff = time() - $last_updated; 514 $diff = $diff / 86400; 515 516 if ( $post->post_type == 'post' && $diff > 30 && get_option( 'akismet_discard_month' ) == 'true' && empty($comment['user_ID']) ) { 517 // akismet_result_spam() won't be called so bump the counter here 518 if ( $incr = apply_filters('akismet_spam_count_incr', 1) ) 519 update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr ); 520 die; 521 } 522 } 523 524 if ( function_exists('wp_next_scheduled') && function_exists('wp_schedule_event') ) { 525 // WP 2.1+: delete old comments daily 526 if ( !wp_next_scheduled('akismet_scheduled_delete') ) 527 wp_schedule_event(time(), 'daily', 'akismet_scheduled_delete'); 528 } elseif ( (mt_rand(1, 10) == 3) ) { 529 // WP 2.0: run this one time in ten 530 akismet_delete_old(); 531 } 532 return $commentdata; 533 } 534 535 function akismet_delete_old() { 536 global $wpdb; 537 $now_gmt = current_time('mysql', 1); 538 $comment_ids = $wpdb->get_col("SELECT comment_id FROM $wpdb->comments WHERE DATE_SUB('$now_gmt', INTERVAL 15 DAY) > comment_date_gmt AND comment_approved = 'spam'"); 539 if ( empty( $comment_ids ) ) 540 return; 541 542 do_action( 'delete_comment', $comment_ids ); 543 $wpdb->query("DELETE FROM $wpdb->comments WHERE comment_id IN ( " . implode( ', ', $comment_ids ) . " )"); 544 $n = mt_rand(1, 5000); 545 if ( apply_filters('akismet_optimize_table', ($n == 11)) ) // lucky number 546 $wpdb->query("OPTIMIZE TABLE $wpdb->comments"); 547 548 } 549 550 add_action('akismet_scheduled_delete', 'akismet_delete_old'); 551 552 function akismet_submit_nonspam_comment ( $comment_id ) { 553 global $wpdb, $akismet_api_host, $akismet_api_port, $current_user, $current_site; 554 $comment_id = (int) $comment_id; 555 556 $comment = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID = '$comment_id'"); 557 if ( !$comment ) // it was deleted 558 return; 559 $comment->blog = get_option('home'); 560 $comment->blog_lang = get_locale(); 561 $comment->blog_charset = get_option('blog_charset'); 562 $comment->permalink = get_permalink($comment->comment_post_ID); 563 if ( is_object($current_user) ) { 564 $comment->reporter = $current_user->user_login; 565 } 566 if ( is_object($current_site) ) { 567 $comment->site_domain = $current_site->domain; 568 } 569 570 $comment->user_role = ''; 571 if ( isset( $comment->user_ID ) ) 572 $comment->user_role = akismet_get_user_roles($comment->user_ID); 573 574 $query_string = ''; 575 foreach ( $comment as $key => $data ) 576 $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&'; 577 578 $response = akismet_http_post($query_string, $akismet_api_host, "/1.1/submit-ham", $akismet_api_port); 579 do_action('akismet_submit_nonspam_comment', $comment_id, $response[1]); 580 } 581 582 function akismet_submit_spam_comment ( $comment_id ) { 583 global $wpdb, $akismet_api_host, $akismet_api_port, $current_user, $current_site; 584 $comment_id = (int) $comment_id; 585 586 $comment = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID = '$comment_id'"); 587 if ( !$comment ) // it was deleted 588 return; 589 if ( 'spam' != $comment->comment_approved ) 590 return; 591 $comment->blog = get_option('home'); 592 $comment->blog_lang = get_locale(); 593 $comment->blog_charset = get_option('blog_charset'); 594 $comment->permalink = get_permalink($comment->comment_post_ID); 595 if ( is_object($current_user) ) { 596 $comment->reporter = $current_user->user_login; 597 } 598 if ( is_object($current_site) ) { 599 $comment->site_domain = $current_site->domain; 600 } 601 602 $comment->user_role = ''; 603 if ( !isset( $comment->user_id ) ) 604 $comment->user_role = akismet_get_user_roles($comment->user_ID); 605 606 $query_string = ''; 607 foreach ( $comment as $key => $data ) 608 $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&'; 609 610 $response = akismet_http_post($query_string, $akismet_api_host, "/1.1/submit-spam", $akismet_api_port); 611 do_action('akismet_submit_spam_comment', $comment_id, $response[1]); 612 } 613 614 add_action('preprocess_comment', 'akismet_auto_check_comment', 1); 615 616 // For old versions of WP only 617 function akismet_set_comment_status( $comment_id, $status ) { 618 if ( $status == 'spam' ) { 619 akismet_submit_spam_comment( $comment_id ); 620 } elseif ( $status == 'approve' ) { 621 akismet_submit_nonspam_comment( $comment_id ); 622 } 623 } 624 625 // For WP 2.7+ 626 function akismet_transition_comment_status( $new_status, $old_status, $comment ) { 627 if ( $new_status == $old_status ) 628 return; 629 630 if ( $new_status == 'spam' ) { 631 akismet_submit_spam_comment( $comment->comment_ID ); 632 } elseif ( $old_status == 'spam' && ( $new_status == 'approved' || $new_status == 'unapproved' ) ) { 633 akismet_submit_nonspam_comment( $comment->comment_ID ); 634 } 635 } 636 637 function akismet_spamtoham( $comment ) { akismet_submit_nonspam_comment( $comment->comment_ID ); } 638 639 if ( function_exists( 'wp_transition_comment_status' ) ) { 640 add_action( 'transition_comment_status', 'akismet_transition_comment_status', 10, 3 ); 641 } else { 642 add_action('wp_set_comment_status', 'akismet_set_comment_status', 10, 2); 643 add_action('edit_comment', 'akismet_submit_spam_comment'); 644 add_filter( 'comment_spam_to_approved', 'akismet_spamtoham' ); 645 add_filter( 'comment_spam_to_unapproved', 'akismet_spamtoham' ); 646 } 647 // Total spam in queue 648 // get_option( 'akismet_spam_count' ) is the total caught ever 649 function akismet_spam_count( $type = false ) { 650 global $wpdb; 651 652 if ( !$type ) { // total 653 $count = wp_cache_get( 'akismet_spam_count', 'widget' ); 654 if ( false === $count ) { 655 if ( function_exists('wp_count_comments') ) { 656 $count = wp_count_comments(); 657 $count = $count->spam; 658 } else { 659 $count = (int) $wpdb->get_var("SELECT COUNT(comment_ID) FROM $wpdb->comments WHERE comment_approved = 'spam'"); 660 } 661 wp_cache_set( 'akismet_spam_count', $count, 'widget', 3600 ); 662 } 663 return $count; 664 } elseif ( 'comments' == $type || 'comment' == $type ) { // comments 665 $type = ''; 666 } else { // pingback, trackback, ... 667 $type = $wpdb->escape( $type ); 668 } 669 670 return (int) $wpdb->get_var("SELECT COUNT(comment_ID) FROM $wpdb->comments WHERE comment_approved = 'spam' AND comment_type='$type'"); 671 } 672 673 674 // WP 2.5+ 675 function akismet_rightnow() { 676 global $submenu, $wp_db_version; 677 678 // clean_url was deprecated in WP 3.0 679 $esc_url = 'clean_url'; 680 if ( function_exists( 'esc_url' ) ) 681 $esc_url = 'esc_url'; 682 683 if ( 8645 < $wp_db_version ) // 2.7 684 $link = 'edit-comments.php?comment_status=spam'; 685 elseif ( isset( $submenu['edit-comments.php'] ) ) 686 $link = 'edit-comments.php?page=akismet-admin'; 687 else 688 $link = 'edit.php?page=akismet-admin'; 689 690 if ( $count = get_option('akismet_spam_count') ) { 691 $intro = sprintf( __ngettext( 692 '<a href="%1$s">Akismet</a> has protected your site from %2$s spam comment already,', 693 '<a href="%1$s">Akismet</a> has protected your site from %2$s spam comments already,', 694 $count 695 ), 'http://akismet.com/', number_format_i18n( $count ) ); 696 } else { 697 $intro = sprintf( __('<a href="%1$s">Akismet</a> blocks spam from getting to your blog,'), 'http://akismet.com/' ); 698 } 699 700 if ( $queue_count = akismet_spam_count() ) { 701 $queue_text = sprintf( __ngettext( 702 'and there\'s <a href="%2$s">%1$s comment</a> in your spam queue right now.', 703 'and there are <a href="%2$s">%1$s comments</a> in your spam queue right now.', 704 $queue_count 705 ), number_format_i18n( $queue_count ), clean_url($link) ); 706 } else { 707 $queue_text = sprintf( __( "but there's nothing in your <a href='%1\$s'>spam queue</a> at the moment." ), $esc_url($link) ); 708 } 709 710 // _c was deprecated in WP 2.9.0 711 if ( function_exists( '_x' ) ) 712 $text = sprintf( _x( '%1$s %2$s', 'akismet_rightnow' ), $intro, $queue_text ); 713 else 714 $text = sprintf( _c( '%1$s %2$s|akismet_rightnow' ), $intro, $queue_text ); 715 716 echo "<p class='akismet-right-now'>$text</p>\n"; 717 } 718 719 add_action('rightnow_end', 'akismet_rightnow'); 720 721 722 // For WP >= 2.5 723 function akismet_check_for_spam_button($comment_status) { 724 if ( 'approved' == $comment_status ) 725 return; 726 if ( function_exists('plugins_url') ) 727 $link = 'admin.php?action=akismet_recheck_queue'; 728 else 729 $link = 'edit-comments.php?page=akismet-admin&recheckqueue=true&noheader=true'; 730 echo "</div><div class='alignleft'><a class='button-secondary checkforspam' href='$link'>" . __('Check for Spam') . "</a>"; 731 } 732 add_action('manage_comments_nav', 'akismet_check_for_spam_button'); 733 734 function akismet_recheck_queue() { 735 global $wpdb, $akismet_api_host, $akismet_api_port; 736 737 if ( ! ( isset( $_GET['recheckqueue'] ) || ( isset( $_REQUEST['action'] ) && 'akismet_recheck_queue' == $_REQUEST['action'] ) ) ) 738 return; 739 740 $moderation = $wpdb->get_results( "SELECT * FROM $wpdb->comments WHERE comment_approved = '0'", ARRAY_A ); 741 foreach ( (array) $moderation as $c ) { 742 $c['user_ip'] = $c['comment_author_IP']; 743 $c['user_agent'] = $c['comment_agent']; 744 $c['referrer'] = ''; 745 $c['blog'] = get_option('home'); 746 $c['blog_lang'] = get_locale(); 747 $c['blog_charset'] = get_option('blog_charset'); 748 $c['permalink'] = get_permalink($c['comment_post_ID']); 749 750 $c['user_role'] = ''; 751 if ( isset( $c['user_ID'] ) ) 752 $c['user_role'] = akismet_get_user_roles($c['user_ID']); 753 754 $id = (int) $c['comment_ID']; 755 756 $query_string = ''; 757 foreach ( $c as $key => $data ) 758 $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&'; 759 760 $response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port); 761 if ( 'true' == $response[1] ) { 762 if ( function_exists('wp_set_comment_status') ) 763 wp_set_comment_status($id, 'spam'); 764 else 765 $wpdb->query("UPDATE $wpdb->comments SET comment_approved = 'spam' WHERE comment_ID = $id"); 766 767 } 768 } 769 wp_redirect( $_SERVER['HTTP_REFERER'] ); 770 exit; 771 } 772 773 add_action('admin_action_akismet_recheck_queue', 'akismet_recheck_queue'); 774 775 function akismet_check_db_comment( $id ) { 776 global $wpdb, $akismet_api_host, $akismet_api_port; 777 778 $id = (int) $id; 779 $c = $wpdb->get_row( "SELECT * FROM $wpdb->comments WHERE comment_ID = '$id'", ARRAY_A ); 780 if ( !$c ) 781 return; 782 783 $c['user_ip'] = $c['comment_author_IP']; 784 $c['user_agent'] = $c['comment_agent']; 785 $c['referrer'] = ''; 786 $c['blog'] = get_option('home'); 787 $c['blog_lang'] = get_locale(); 788 $c['blog_charset'] = get_option('blog_charset'); 789 $c['permalink'] = get_permalink($c['comment_post_ID']); 790 $id = $c['comment_ID']; 791 792 $query_string = ''; 793 foreach ( $c as $key => $data ) 794 $query_string .= $key . '=' . urlencode( stripslashes($data) ) . '&'; 795 796 $response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port); 797 return $response[1]; 798 } 799 800 // Widget stuff 801 function widget_akismet_register() { 802 if ( function_exists('register_sidebar_widget') ) : 803 function widget_akismet($args) { 804 extract($args); 805 $options = get_option('widget_akismet'); 806 $count = number_format_i18n(get_option('akismet_spam_count')); 807 ?> 808 <?php echo $before_widget; ?> 809 <?php echo $before_title . $options['title'] . $after_title; ?> 810 <div id="akismetwrap"><div id="akismetstats"><a id="aka" href="http://akismet.com" title=""><?php printf( __( '%1$s %2$sspam comments%3$s %4$sblocked by%5$s<br />%6$sAkismet%7$s' ), '<span id="akismet1"><span id="akismetcount">' . $count . '</span>', '<span id="akismetsc">', '</span></span>', '<span id="akismet2"><span id="akismetbb">', '</span>', '<span id="akismeta">', '</span></span>' ); ?></a></div></div> 811 <?php echo $after_widget; ?> 812 <?php 813 } 814 815 function widget_akismet_style() { 816 $plugin_dir = '/wp-content/plugins'; 817 if ( defined( 'PLUGINDIR' ) ) 818 $plugin_dir = '/' . PLUGINDIR; 819 820 ?> 821 <style type="text/css"> 822 #aka,#aka:link,#aka:hover,#aka:visited,#aka:active{color:#fff;text-decoration:none} 823 #aka:hover{border:none;text-decoration:none} 824 #aka:hover #akismet1{display:none} 825 #aka:hover #akismet2,#akismet1{display:block} 826 #akismet2{display:none;padding-top:2px} 827 #akismeta{font-size:16px;font-weight:bold;line-height:18px;text-decoration:none} 828 #akismetcount{display:block;font:15px Verdana,Arial,Sans-Serif;font-weight:bold;text-decoration:none} 829 #akismetwrap #akismetstats{background:url(<?php echo get_option('siteurl'), $plugin_dir; ?>/akismet/akismet.gif) no-repeat top left;border:none;color:#fff;font:11px 'Trebuchet MS','Myriad Pro',sans-serif;height:40px;line-height:100%;overflow:hidden;padding:8px 0 0;text-align:center;width:120px} 830 </style> 831 <?php 832 } 833 834 function widget_akismet_control() { 835 $options = $newoptions = get_option('widget_akismet'); 836 if ( isset( $_POST['akismet-submit'] ) && $_POST["akismet-submit"] ) { 837 $newoptions['title'] = strip_tags(stripslashes($_POST["akismet-title"])); 838 if ( empty($newoptions['title']) ) $newoptions['title'] = __('Spam Blocked'); 839 } 840 if ( $options != $newoptions ) { 841 $options = $newoptions; 842 update_option('widget_akismet', $options); 843 } 844 $title = htmlspecialchars($options['title'], ENT_QUOTES); 845 ?> 846 <p><label for="akismet-title"><?php _e('Title:'); ?> <input style="width: 250px;" id="akismet-title" name="akismet-title" type="text" value="<?php echo $title; ?>" /></label></p> 847 <input type="hidden" id="akismet-submit" name="akismet-submit" value="1" /> 848 <?php 849 } 850 851 if ( function_exists( 'wp_register_sidebar_widget' ) ) { 852 wp_register_sidebar_widget( 'akismet', 'Akismet', 'widget_akismet', null, 'akismet'); 853 wp_register_widget_control( 'akismet', 'Akismet', 'widget_akismet_control', null, 75, 'akismet'); 854 } else { 855 register_sidebar_widget('Akismet', 'widget_akismet', null, 'akismet'); 856 register_widget_control('Akismet', 'widget_akismet_control', null, 75, 'akismet'); 857 } 858 if ( is_active_widget('widget_akismet') ) 859 add_action('wp_head', 'widget_akismet_style'); 860 endif; 861 } 862 863 add_action('init', 'widget_akismet_register'); 864 865 // Counter for non-widget users 866 function akismet_counter() { 867 $plugin_dir = '/wp-content/plugins'; 868 if ( defined( 'PLUGINDIR' ) ) 869 $plugin_dir = '/' . PLUGINDIR; 870 871 ?> 872 <style type="text/css"> 873 #akismetwrap #aka,#aka:link,#aka:hover,#aka:visited,#aka:active{color:#fff;text-decoration:none} 874 #aka:hover{border:none;text-decoration:none} 875 #aka:hover #akismet1{display:none} 876 #aka:hover #akismet2,#akismet1{display:block} 877 #akismet2{display:none;padding-top:2px} 878 #akismeta{font-size:16px;font-weight:bold;line-height:18px;text-decoration:none} 879 #akismetcount{display:block;font:15px Verdana,Arial,Sans-Serif;font-weight:bold;text-decoration:none} 880 #akismetwrap #akismetstats{background:url(<?php echo get_option('siteurl'), $plugin_dir; ?>/akismet/akismet.gif) no-repeat top left;border:none;color:#fff;font:11px 'Trebuchet MS','Myriad Pro',sans-serif;height:40px;line-height:100%;overflow:hidden;padding:8px 0 0;text-align:center;width:120px} 881 </style> 882 <?php 883 $count = number_format_i18n(get_option('akismet_spam_count')); 884 ?> 885 <div id="akismetwrap"><div id="akismetstats"><a id="aka" href="http://akismet.com" title=""><div id="akismet1"><span id="akismetcount"><?php echo $count; ?></span> <span id="akismetsc"><?php _e('spam comments') ?></span></div> <div id="akismet2"><span id="akismetbb"><?php _e('blocked by') ?></span><br /><span id="akismeta">Akismet</span></div></a></div></div> 886 <?php 887 } 888 889 ?>
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| Generated: Thu Oct 14 05:12:05 2010 | Cross-referenced by PHPXref 0.7 |