<?php # $Id$
if (IN_serendipity !== true) {
die ("Don't hack!");
}
// Probe for a language include with constants. Still include defines later on, if some constants were missing
$probelang = dirname(__FILE__) . '/' . $serendipity['charset'] . 'lang_' . $serendipity['lang'] . '.inc.php';
if (file_exists($probelang)) {
include $probelang;
}
include dirname(__FILE__) . '/lang_en.inc.php';
/* BC - TODO: Remove for 0.8 final */
if (!function_exists('serendipity_serverOffsetHour')) {
function serendipity_serverOffsetHour() {
return time();
}
}
class serendipity_event_spamblock extends serendipity_event
{
var $filter_defaults;
function introspect(&$propbag)
{
global $serendipity;
$this->title = PLUGIN_EVENT_SPAMBLOCK_TITLE;
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_TITLE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_DESC);
$propbag->add('stackable', false);
$propbag->add('author', 'Garvin Hicking, Sebastian Nohn, Grischa Brockhaus');
$propbag->add('requirements', array(
'serendipity' => '0.8',
'smarty' => '2.6.7',
'php' => '4.1.0'
));
$propbag->add('version', '1.70');
$propbag->add('event_hooks', array(
'frontend_saveComment' => true,
'external_plugin' => true,
'frontend_comment' => true,
'fetchcomments' => true,
'backend_comments_top' => true,
'backend_view_comment' => true
));
$propbag->add('configuration', array(
'killswitch',
'hide_for_authors',
'trackback_ipvalidation' ,
'bodyclone',
'entrytitle',
'ipflood',
'csrf',
'captchas',
'captchas_ttl',
'captcha_color',
'forcemoderation',
'forcemoderation_treat',
'forcemoderationt',
'forcemoderationt_treat',
'disable_api_comments',
'trackback_check_url',
'links_moderate',
'links_reject',
'contentfilter_activate',
'contentfilter_urls',
'contentfilter_authors',
'contentfilter_words',
'contentfilter_emails',
'bloggdeblacklist',
'akismet',
'akismet_filter',
'hide_email',
'checkmail',
'required_fields',
'automagic_htaccess',
'logtype',
'logfile'));
$propbag->add('groups', array('ANTISPAM'));
$this->filter_defaults = array(
'authors' => 'casino;phentermine;credit;loans;poker',
'emails' => '',
'urls' => '8gold\.com;911easymoney\.com;canadianlabels\.net;condodream\.com;crepesuzette\.com;debt-help-bill-consolidation-elimination\.com;fidelityfunding\.net;flafeber\.com;gb\.com;houseofsevengables\.com;instant-quick-money-cash-advance-personal-loans-until-pay-day\.com;mediavisor\.com;newtruths\.com;oiline\.com;onlinegamingassociation\.com;online\-+poker\.com;popwow\.com;royalmailhotel\.com;spoodles\.com;sportsparent\.com;stmaryonline\.org;thatwhichis\.com;tmsathai\.org;uaeecommerce\.com;learnhowtoplay\.com',
'words' => 'very good site!;Real good stuff!'
);
}
function introspect_config_item($name, &$propbag)
{
global $serendipity;
switch($name) {
case 'disable_api_comments':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_API_COMMENTS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_API_COMMENTS_DESC);
$propbag->add('default', 'none');
$propbag->add('radio', array(
'value' => array('moderate', 'reject', 'none'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT, NONE)
));
$propbag->add('radio_per_row', '1');
break;
case 'trackback_ipvalidation':
/*
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_TRACKBACKIPVALIDATION);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_TRACKBACKIPVALIDATION_DESC);
$propbag->add('default', false);
*/
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_TRACKBACKIPVALIDATION);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_TRACKBACKIPVALIDATION_DESC);
$propbag->add('default', 'no');
$propbag->add('radio', array(
'value' => array('no', 'moderate', 'reject'),
'desc' => array(NO, PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT)
));
$propbag->add('radio_per_row', '1');
break;
case 'trackback_check_url':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_TRACKBACKURL);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_TRACKBACKURL_DESC);
$propbag->add('default', false);
break;
case 'automagic_htaccess':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_HTACCESS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_HTACCESS_DESC);
$propbag->add('default', false);
break;
case 'hide_email':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_HIDE_EMAIL);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_HIDE_EMAIL_DESC);
$propbag->add('default', false);
break;
case 'csrf':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_CSRF);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_CSRF_DESC);
$propbag->add('default', true);
break;
case 'entrytitle':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FILTER_TITLE);
$propbag->add('description', '');
$propbag->add('default', false);
break;
case 'checkmail':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_CHECKMAIL);
$propbag->add('description', '');
$propbag->add('default', false);
break;
case 'required_fields':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_REQUIRED_FIELDS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_REQUIRED_FIELDS_DESC);
$propbag->add('default', '');
break;
case 'bodyclone':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_BODYCLONE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_BODYCLONE_DESC);
$propbag->add('default', true);
break;
case 'captchas':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_DESC);
$propbag->add('default', 'yes');
$propbag->add('radio', array(
'value' => array(true, 'no', 'scramble'),
'desc' => array(YES, NO, PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_SCRAMBLE)
));
break;
case 'hide_for_authors':
$_groups =& serendipity_getAllGroups();
$groups = array(
'all' => ALL_AUTHORS,
'none' => NONE
);
foreach($_groups AS $group) {
$groups[$group['confkey']] = $group['confvalue'];
}
$propbag->add('type', 'multiselect');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_HIDE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_HIDE_DESC);
$propbag->add('select_values', $groups);
$propbag->add('select_size', 5);
$propbag->add('default', 'all');
break;
case 'killswitch':
$propbag->add('type', 'boolean');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_KILLSWITCH);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_KILLSWITCH_DESC);
$propbag->add('default', false);
break;
case 'contentfilter_activate':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FILTER_ACTIVATE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FILTER_ACTIVATE_DESC);
$propbag->add('default', 'moderate');
$propbag->add('radio', array(
'value' => array('moderate', 'reject', 'none'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT, NONE)
));
$propbag->add('radio_per_row', '1');
break;
case 'bloggdeblacklist':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_BLOGG_SPAMLIST);
$propbag->add('description', '');
$propbag->add('default', 'none');
$propbag->add('radio', array(
'value' => array('moderate', 'reject', 'none'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT, NONE)
));
$propbag->add('radio_per_row', '1');
break;
case 'akismet':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_AKISMET);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_AKISMET_DESC);
$propbag->add('default', '');
$propbag->add('radio', array(
'value' => array('moderate', 'reject', 'none'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT, NONE)
));
$propbag->add('radio_per_row', '1');
break;
case 'akismet_filter':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_AKISMET_FILTER);
$propbag->add('description', '');
$propbag->add('default', 'reject');
$propbag->add('radio', array(
'value' => array('moderate', 'reject', 'none'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT, NONE)
));
$propbag->add('radio_per_row', '1');
break;
case 'contentfilter_urls':
$propbag->add('type', 'text');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FILTER_URLS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FILTER_URLS_DESC);
$propbag->add('default', $this->filter_defaults['urls']);
break;
case 'contentfilter_authors':
$propbag->add('type', 'text');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS_DESC);
$propbag->add('default', $this->filter_defaults['authors']);
break;
case 'contentfilter_words':
$propbag->add('type', 'text');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FILTER_WORDS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS_DESC);
$propbag->add('default', $this->filter_defaults['words']);
break;
case 'contentfilter_emails':
$propbag->add('type', 'text');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FILTER_EMAILS);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS_DESC);
$propbag->add('default', $this->filter_defaults['emails']);
break;
case 'logfile':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_LOGFILE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_LOGFILE_DESC);
$propbag->add('default', $serendipity['serendipityPath'] . 'spamblock.log');
break;
case 'logtype':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_LOGTYPE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_LOGTYPE_DESC);
$propbag->add('default', 'db');
$propbag->add('radio', array(
'value' => array('file', 'db', 'none'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_LOGTYPE_FILE, PLUGIN_EVENT_SPAMBLOCK_LOGTYPE_DB, PLUGIN_EVENT_SPAMBLOCK_LOGTYPE_NONE)
));
$propbag->add('radio_per_row', '1');
break;
case 'ipflood':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_IPFLOOD);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_IPFLOOD_DESC);
$propbag->add('default', 0);
break;
case 'captchas_ttl':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_TTL);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_TTL_DESC);
$propbag->add('default', '7');
break;
case 'captcha_color':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_CAPTCHA_COLOR);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_CAPTCHA_COLOR_DESC);
$propbag->add('default', '255,255,255');
$propbag->add('validate', '@^[0-9]{1,3},[0-9]{1,3},[0-9]{1,3}$@');
break;
case 'forcemoderation':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FORCEMODERATION);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FORCEMODERATION_DESC);
$propbag->add('default', '30');
break;
case 'forcemoderation_treat':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FORCEMODERATION_TREAT);
$propbag->add('description', '');
$propbag->add('default', 'moderate');
$propbag->add('radio', array(
'value' => array('moderate', 'reject'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT)
));
$propbag->add('radio_per_row', '1');
break;
case 'forcemoderationt':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FORCEMODERATIONT);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_FORCEMODERATIONT_DESC);
$propbag->add('default', '30');
break;
case 'forcemoderationt_treat':
$propbag->add('type', 'radio');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_FORCEMODERATIONT_TREAT);
$propbag->add('description', '');
$propbag->add('default', 'moderate');
$propbag->add('radio', array(
'value' => array('moderate', 'reject'),
'desc' => array(PLUGIN_EVENT_SPAMBLOCK_API_MODERATE, PLUGIN_EVENT_SPAMBLOCK_API_REJECT)
));
$propbag->add('radio_per_row', '1');
break;
case 'links_moderate':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_LINKS_MODERATE);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_LINKS_MODERATE_DESC);
$propbag->add('default', '7');
break;
case 'links_reject':
$propbag->add('type', 'string');
$propbag->add('name', PLUGIN_EVENT_SPAMBLOCK_LINKS_REJECT);
$propbag->add('description', PLUGIN_EVENT_SPAMBLOCK_LINKS_REJECT_DESC);
$propbag->add('default', '13');
break;
default:
return false;
}
return true;
}
function htaccess_update($new_ip) {
global $serendipity;
serendipity_db_query("INSERT INTO {$serendipity['dbPrefix']}spamblock_htaccess (ip, timestamp) VALUES ('" . serendipity_db_escape_string($new_ip) . "', '" . time() . "')");
$q = "SELECT ip FROM {$serendipity['dbPrefix']}spamblock_htaccess WHERE timestamp > " . (time() - 86400*2) . " GROUP BY ip";
$rows = serendipity_db_query($q, false, 'assoc');
$deny = array();
foreach($rows AS $row) {
$deny[] = $row['ip'];
}
$hta = $serendipity['serendipityPath'] . '.htaccess';
if (file_exists($hta) && is_writable($hta)) {
$htaccess = file_get_contents($hta);
$fp = @fopen($hta, 'w');
if (!$fp) {
return false;
} else {
// Check if an old htaccess file existed and try to preserve its contents. Otherwise completely wipe the file.
if ($htaccess != '' && preg_match('@^(.*)#SPAMDENY.*Deny From.+#/SPAMDENY(.*)$@imsU', $htaccess, $match)) {
// Code outside from s9y-code was found.
$content = trim($match[1]) . "\n#SPAMDENY\nDeny From " . implode(',', $deny) . "\n#/SPAMDENY\n" . trim($match[2]);
} else {
$content = trim($htaccess) . "\n#SPAMDENY\nDeny From " . implode(',', $deny) . "\n#/SPAMDENY\n";
}
fwrite($fp, $content);
fclose($fp);
return true;
}
}
}
function &getBlacklist($where, $api_key = '', &$eventData, &$addData) {
global $serendipity;
$ret = false;
require_once S9Y_PEAR_PATH . 'HTTP/Request.php';
if (function_exists('serendipity_request_start')) serendipity_request_start();
switch($where) {
case 'akismet.com':
$this->log($this->logfile, $eventData['id'], 'AKISMET_SAFETY', 'Akismet verification takes place', $addData);
$ret = array();
$data = array(
'blog' => $serendipity['baseURL'],
'user_agent' => $_SERVER['HTTP_USER_AGENT'],
'referrer' => $_SERVER['HTTP_REFERER'],
'user_ip' => $_SERVER['REMOTE_ADDR'] != getenv('SERVER_ADDR') ? $_SERVER['REMOTE_ADDR'] : getenv('HTTP_X_FORWARDED_FOR'),
'permalink' => serendipity_archiveURL($eventData['id'], $eventData['title'], 'serendipityHTTPPath', true, array('timestamp' => $eventData['timestamp'])),
'comment_type' => ($addData['type'] == 'NORMAL' ? 'comment' : 'trackback'),
'comment_author' => $addData['name'],
'comment_author_email' => $addData['email'],
'comment_author_url' => $addData['url'],
'comment_content' => $addData['comment']
);
$opt = array(
'method' => 'POST',
'http' => '1.1',
'timeout' => 20,
'allowRedirects' => true,
'maxRedirects' => 3,
'readTimeout' => array(5,0),
);
$req = &new HTTP_Request(
'http://rest.akismet.com/1.1/verify-key',
$opt
);
$req->addPostData('key', $api_key);
$req->addPostData('blog', $serendipity['baseURL']);
if (PEAR::isError($req->sendRequest()) || $req->getResponseCode() != '200') {
$ret['is_spam'] = false;
$ret['message'] = 'API Verification Request failed';
$this->log($this->logfile, $eventData['id'], 'API_ERROR', 'Akismet HTTP verification request failed.', $addData);
break;
} else {
// Fetch response
$reqdata = $req->getResponseBody();
}
if (!preg_match('@valid@i', $reqdata)) {
$ret['is_spam'] = false;
$ret['message'] = 'API Verification failed';
$this->log($this->logfile, $eventData['id'], 'API_ERROR', 'Akismet API verification failed: ' . $reqdata, $addData);
break;
}
$req = &new HTTP_Request(
'http://' . $api_key . '.rest.akismet.com/1.1/comment-check',
$opt
);
foreach($data AS $key => $value) {
$req->addPostData($key, $value);
}
if (PEAR::isError($req->sendRequest()) || $req->getResponseCode() != '200') {
$ret['is_spam'] = false;
$ret['message'] = 'Akismet Request failed';
$this->log($this->logfile, $eventData['id'], 'API_ERROR', 'Akismet HTTP request failed.', $addData);
break;
} else {
// Fetch response
$reqdata = $req->getResponseBody();
}
if (preg_match('@true@i', $reqdata)) {
$ret['is_spam'] = true;
$ret['message'] = $reqdata;
$this->log($this->logfile, $eventData['id'], 'AKISMET_PASS', 'Passed Akismet verification', $addData);
} elseif (preg_match('@false@i', $reqdata)) {
$ret['is_spam'] = false;
$ret['message'] = $reqdata;
$this->log($this->logfile, $eventData['id'], 'API_ERROR', 'Akismet API verification failed: ' . $reqdata, $addData);
} else {
$ret['is_spam'] = false;
$ret['message'] = 'Akismet API failure';
$this->log($this->logfile, $eventData['id'], 'API_ERROR', 'Akismet API failure: ' . $reqdata, $addData);
}
break;
case 'blogg.de':
$target = $serendipity['serendipityPath'] . PATH_SMARTY_COMPILE . '/blogg.de.blacklist.txt';
$timeout = 3600; // One hour
if (file_exists($target) && filemtime($target) > time()-$timeout) {
$data = file_get_contents($target);
} else {
$data = '';
$req = &new HTTP_Request('http://spam.blogg.de/blacklist.txt');
if (PEAR::isError($req->sendRequest()) || $req->getResponseCode() != '200') {
if (file_exists($target) && filesize($target) > 0) {
$data = file_get_contents($target);
}
} else {
// Fetch file
$data = $req->getResponseBody();
$fp = @fopen($target, 'w');
if ($fp) {
fwrite($fp, $data);
fclose($fp);
}
}
}
$blacklist = explode("\n", $data);
$ret =& $blacklist;
default:
break;
}
if (function_exists('serendipity_request_end')) serendipity_request_end();
return $ret;
}
function checkScheme() {
global $serendipity;
$dbversion = $this->get_config('dbversion', '1');
if ($dbversion == '1') {
$q = "CREATE TABLE {$serendipity['dbPrefix']}spamblocklog (
timestamp int(10) {UNSIGNED} default null,
type varchar(255),
reason text,
entry_id int(10) {UNSIGNED} not null default '0',
author varchar(80),
email varchar(200),
url varchar(200),
useragent varchar(255),
ip varchar(15),
referer varchar(255),
body text)";
$sql = serendipity_db_schema_import($q);
$q = "CREATE INDEX kspamidx ON {$serendipity['dbPrefix']}spamblocklog (timestamp);";
$sql = serendipity_db_schema_import($q);
$q = "CREATE INDEX kspamtypeidx ON {$serendipity['dbPrefix']}spamblocklog (type);";
$sql = serendipity_db_schema_import($q);
$q = "CREATE INDEX kspamentryidx ON {$serendipity['dbPrefix']}spamblocklog (entry_id);";
$sql = serendipity_db_schema_import($q);
$q = "CREATE TABLE {$serendipity['dbPrefix']}spamblock_htaccess (
timestamp int(10) {UNSIGNED} default null,
ip varchar(15))";
$sql = serendipity_db_schema_import($q);
$q = "CREATE INDEX kshtaidx ON {$serendipity['dbPrefix']}spamblock_htaccess (timestamp);";
$sql = serendipity_db_schema_import($q);
$this->set_config('dbversion', '2');
}
return true;
}
function generate_content(&$title) {
$title = $this->title;
}
// This method will be called on "fatal" spam errors that are unlikely to occur accidentally by users.
// Their IPs will be constantly blocked.
function IsHardcoreSpammer() {
global $serendipity;
if (serendipity_db_bool($this->get_config('automagic_htaccess'))) {
$this->htaccess_update($_SERVER['REMOTE_ADDR']);
}
}
// Checks whether the current author is contained in one of the gorups that need no spam checking
function inGroup() {
global $serendipity;
$checkgroups = explode('^', $this->get_config('hide_for_authors'));
if (!isset($serendipity['authorid']) || !is_array($checkgroups)) {
return false;
}
$mygroups =& serendipity_getGroups($serendipity['authorid'], true);
if (!is_array($mygroups)) {
return false;
}
foreach($checkgroups AS $key => $groupid) {
if ($groupid == 'all') {
return true;
} elseif (in_array($groupid, $mygroups)) {
return true;
}
}
return false;
}
function example() {
echo '<div id="captchabox" style="margin: 10px; padding: 5px; border: 1px solid black">' . PLUGIN_EVENT_SPAMBLOCK_LOOK . '<br />';
$this->show_captcha();
echo '</div>';
}
function show_captcha($use_gd = false) {
global $serendipity;
if ($use_gd || (function_exists('imagettftext') && function_exists('imagejpeg'))) {
$max_char = 5;
$min_char = 3;
$use_gd = true;
} else {
$max_char = $min_char = 5;
$use_gd = false;
}
if ($use_gd) {
printf('<img src="%s" onclick="this.src=this.src + \'1\'" title="%s" alt="CAPTCHA" class="captcha" />',
$serendipity['baseURL'] . ($serendipity['rewrite'] == 'none' ? $serendipity['indexFile'] . '?/' : '') . 'plugin/captcha_' . md5(time()),
htmlspecialchars(PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_USERDESC2)
);
} else {
$bgcolors = explode(',', $this->get_config('captcha_color', '255,0,255'));
$hexval = '#' . dechex(trim($bgcolors[0])) . dechex(trim($bgcolors[1])) . dechex(trim($bgcolors[2]));
$this->random_string($max_char, $min_char);
echo '<div class="serendipity_comment_captcha_image" style="background-color: ' . $hexval . '">';
for ($i = 1; $i <= $max_char; $i++) {
printf('<img src="%s" title="%s" alt="CAPTCHA ' . $i . '" class="captcha" />',
$serendipity['baseURL'] . ($serendipity['rewrite'] == 'none' ? $serendipity['indexFile'] . '?/' : '') . 'plugin/captcha_' . $i . '_' . md5(time()),
htmlspecialchars(PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_USERDESC2)
);
}
echo '</div>';
}
}
function event_hook($event, &$bag, &$eventData, $addData = null) {
global $serendipity;
$debug = true;
$hooks = &$bag->get('event_hooks');
if (isset($hooks[$event])) {
$captchas_ttl = $this->get_config('captchas_ttl', 7);
$_captchas = $this->get_config('captchas', 'yes');
$captchas = ($_captchas !== 'no' && ($_captchas === 'yes' || $_captchas === 'scramble' || serendipity_db_bool($_captchas)));
// Check if the entry is older than the allowed amount of time. Enforce kaptchas if that is true
// of if kaptchas are activated for every entry
$show_captcha = ($captchas && isset($eventData['timestamp']) && ($captchas_ttl < 1 || ($eventData['timestamp'] < (time() - ($captchas_ttl*60*60*24)))) ? true : false);
// Plugins can override with custom captchas
if (isset($serendipity['plugins']['disable_internal_captcha'])) {
$show_captcha = false;
}
$forcemoderation = $this->get_config('forcemoderation', 60);
$forcemoderation_treat = $this->get_config('forcemoderation_treat', 'moderate');
$forcemoderationt = $this->get_config('forcemoderationt', 60);
$forcemoderationt_treat = $this->get_config('forcemoderationt_treat', 'moderate');
$links_moderate = $this->get_config('links_moderate', 10);
$links_reject = $this->get_config('links_reject', 20);
if (function_exists('imagettftext') && function_exists('imagejpeg')) {
$max_char = 5;
$min_char = 3;
$use_gd = true;
} else {
$max_char = $min_char = 5;
$use_gd = false;
}
switch($event) {
case 'fetchcomments':
if (is_array($eventData) && !$_SESSION['serendipityAuthedUser'] && serendipity_db_bool($this->get_config('hide_email', false))) {
// Will force emails to be not displayed in comments and RSS feed for comments. Will not apply to logged in admins (so not in the backend as well)
@reset($eventData);
while(list($idx, $comment) = each($eventData)) {
$eventData[$idx]['no_email'] = true;
}
}
break;
case 'frontend_saveComment':
if (!is_array($eventData) || serendipity_db_bool($eventData['allow_comments'])) {
$this->checkScheme();
$serendipity['csuccess'] = 'true';
$logfile = $this->logfile = $this->get_config('logfile', $serendipity['serendipityPath'] . 'spamblock.log');
$required_fields = $this->get_config('required_fields', '');
// Check CSRF [comments only, cannot be applied to trackbacks]
if ($addData['type'] == 'NORMAL' && serendipity_db_bool($this->get_config('csrf', true))) {
if (!serendipity_checkFormToken(false)) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_CSRF_REASON, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_CSRF_REASON;
}
}
// Check required fields
if ($addData['type'] == 'NORMAL' && !empty($required_fields)) {
$required_field_list = explode(',', $required_fields);
foreach($required_field_list as $required_field) {
$required_field = trim($required_field);
if (empty($addData[$required_field])) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_REQUIRED_FIELD, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_REQUIRED_FIELD, $required_field);
return false;
}
}
}
/*
if ($addData['type'] != 'NORMAL' && empty($addData['name'])) {
$eventData = array('allow_coments' => false);
$this->log($logfile, $eventData['id'], 'INVALIDGARV', 'INVALIDGARV', $addData);
return false;
}
*/
// Check whether to allow comments from registered authors
if (serendipity_userLoggedIn() && $this->inGroup()) {
return true;
}
// Check if entry title is the same as comment body
if (serendipity_db_bool($this->get_config('entrytitle')) && trim($eventData['title']) == trim($addData['comment'])) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_TITLE, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
// Check for global emergency moderation
if ($this->get_config('killswitch', false) === true) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_KILLSWITCH, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_KILLSWITCH;
return false;
}
// Check for not allowing trackbacks/wfwcomments
if ( ($addData['type'] != 'NORMAL' || $addData['source'] == 'API') &&
$this->get_config('disable_api_comments', 'none') != 'none') {
if ($this->get_config('disable_api_comments') == 'reject') {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_API, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_REASON_API;
return false;
} elseif ($this->get_config('disable_api_comments') == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_REASON_API, $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_REASON_API;
}
}
// Check if sender ip is matching trackback ip (ip validation)
$trackback_ipvalidation_option = $this->get_config('trackback_ipvalidation','no');
if ($addData['type'] == 'TRACKBACK' && $trackback_ipvalidation_option != 'no') {
$this->IsHardcoreSpammer();
$parts = @parse_url($addData['url']);
$tipval_method = ($trackback_ipvalidation_option == 'reject'?'REJECTED':'MODERATE');
// Getting host from url successfully?
if (!is_array($parts)) { // not a valid URL
$this->log($logfile, $eventData['id'], $tipval_method, sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_IPVALIDATION, $addData['url'], '', ''));
if ($trackback_ipvalidation_option == 'reject') {
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_IPVALIDATION, $addData['url']);
return false;
} else {
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_IPVALIDATION, $addData['url']);
}
}
$trackback_ip = preg_replace('/[^0-9.]/', '', gethostbyname($parts['host']) );
$sender_ip = preg_replace('/[^0-9.]/', '', $_SERVER['REMOTE_ADDR'] );
$sender_ua = ($debug ? ', ua="' . $_SERVER['HTTP_USER_AGENT'] . '"' : '') ;
// Is host ip and sender ip matching?
if ($trackback_ip != $sender_ip) {
$this->log($logfile, $eventData['id'], $tipval_method, sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_IPVALIDATION, $parts['host'], $trackback_ip, $sender_ip . $sender_ua), $addData);
if ($trackback_ipvalidation_option == 'reject') {
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_IPVALIDATION, $parts['host'], $trackback_ip, $sender_ip . $sender_ua);
return false;
} else {
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_IPVALIDATION, $parts['host'], $trackback_ip, $sender_ip . $sender_ua);
}
}
}
// Filter Akismet Blacklist?
$akismet_apikey = $this->get_config('akismet');
$akismet = $this->get_config('akismet_filter');
if (!empty($akismet_apikey) && ($akismet == 'moderate' || $akismet == 'reject')) {
$spam = $this->getBlacklist('akismet.com', $akismet_apikey, $eventData, $addData);
if ($spam['is_spam'] !== false) {
$this->IsHardcoreSpammer();
if ($akismet == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_REASON_AKISMET_SPAMLIST . ': ' . $spam['message'], $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY . ' (Akismet)';
} else {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_AKISMET_SPAMLIST . ': ' . $spam['message'], $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
}
// Check Trackback URLs?
if ($addData['type'] == 'TRACKBACK' && serendipity_db_bool($this->get_config('trackback_check_url'))) {
require_once S9Y_PEAR_PATH . 'HTTP/Request.php';
if (function_exists('serendipity_request_start')) serendipity_request_start();
$req = &new HTTP_Request($addData['url'], array('allowRedirects' => true, 'maxRedirects' => 5, 'readTimeout' => array(5,0)));
$is_valid = false;
if (PEAR::isError($req->sendRequest()) || $req->getResponseCode() != '200') {
$is_valid = false;
} else {
$fdata = $req->getResponseBody();
// Check if the target page contains a link to our blog
if (preg_match('@' . preg_quote($serendipity['baseURL'], '@') . '@i', $fdata)) {
$is_valid = true;
} else {
$is_valid = false;
}
}
if (function_exists('serendipity_request_end')) serendipity_request_end();
if ($is_valid === false) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_TRACKBACKURL, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_REASON_TRACKBACKURL;
return false;
}
}
// Check for word filtering
if ($filter_type = $this->get_config('contentfilter_activate', 'moderate')) {
// Filter authors names
$filter_authors = explode(';', $this->get_config('contentfilter_authors', $this->filter_defaults['authors']));
if (is_array($filter_authors)) {
foreach($filter_authors AS $filter_author) {
if (empty($filter_author)) {
continue;
}
if (preg_match('@(' . $filter_author . ')@i', $addData['name'], $wordmatch)) {
if ($filter_type == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS . ': ' . $wordmatch[1], $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY . ' (' . PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS . ': ' . $wordmatch[1] . ')';
} else {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_FILTER_AUTHORS . ': ' . $wordmatch[1], $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
}
}
// Filter URL
$filter_urls = explode(';', $this->get_config('contentfilter_urls', $this->filter_defaults['urls']));
if (is_array($filter_urls)) {
foreach($filter_urls AS $filter_url) {
if (empty($filter_url)) {
continue;
}
if (preg_match('@(' . $filter_url . ')@i', $addData['url'], $wordmatch)) {
if ($filter_type == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_FILTER_URLS . ': ' . $wordmatch[1], $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY . ' (' . PLUGIN_EVENT_SPAMBLOCK_FILTER_URLS . ': ' . $wordmatch[1] . ')';
} else {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_FILTER_URLS . ': ' . $wordmatch[1], $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
}
}
// Filter Content
$filter_bodys = explode(';', $this->get_config('contentfilter_words', $this->filter_defaults['words']));
if (is_array($filter_bodys)) {
foreach($filter_bodys AS $filter_body) {
if (empty($filter_body)) {
continue;
}
if (preg_match('@(' . $filter_body . ')@i', $addData['comment'], $wordmatch)) {
if ($filter_type == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_FILTER_WORDS . ': ' . $wordmatch[1], $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY . ' (' . PLUGIN_EVENT_SPAMBLOCK_FILTER_WORDS . ': ' . $wordmatch[1] . ')';
} else {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_FILTER_WORDS . ': ' . $wordmatch[1], $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
}
}
// Filter Emails
$filter_emails = explode(';', $this->get_config('contentfilter_emails', $this->filter_defaults['emails']));
if (is_array($filter_emails)) {
foreach($filter_emails AS $filter_email) {
if (empty($filter_email)) {
continue;
}
if (preg_match('@(' . $filter_email . ')@i', $addData['email'], $wordmatch)) {
$this->IsHardcoreSpammer();
if ($filter_type == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_FILTER_EMAILS . ': ' . $wordmatch[1], $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY . ' (' . PLUGIN_EVENT_SPAMBLOCK_FILTER_EMAILS . ': ' . $wordmatch[1] . ')';
} else {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_FILTER_EMAILS . ': ' . $wordmatch[1], $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['emails'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
}
}
} // Content filtering end
// Filter Blogg.de Blacklist?
$bloggdeblacklist = $this->get_config('bloggdeblacklist');
if ($bloggdeblacklist == 'moderate' || $bloggdeblacklist == 'reject') {
$domains = $this->getBlacklist('blogg.de', '', $eventData, $addData);
if (is_array($domains)) {
foreach($domains AS $domain) {
$domain = trim($domain);
if (empty($domain)) {
continue;
}
if (preg_match('@' . preg_quote($domain) . '@i', $addData['url'])) {
$this->IsHardcoreSpammer();
if ($bloggdeblacklist == 'moderate') {
$this->log($logfile, $eventData['id'], 'MODERATE', PLUGIN_EVENT_SPAMBLOCK_REASON_BLOGG_SPAMLIST . ': ' . $domain, $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY . ' (' . PLUGIN_EVENT_SPAMBLOCK_REASON_BLOGG_SPAMLIST . ')';
} else {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_BLOGG_SPAMLIST . ': ' . $domain, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
}
}
}
// Check for maximum number of links before rejecting
$link_count = substr_count(strtolower($addData['comment']), 'http://');
if ($links_reject > 0 && $link_count > $links_reject) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_LINKS_REJECT, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
// Captcha checking
if ($show_captcha && $addData['type'] == 'NORMAL') {
if (!isset($_SESSION['spamblock']['captcha']) || !isset($serendipity['POST']['captcha']) || strtolower($serendipity['POST']['captcha']) != strtolower($_SESSION['spamblock']['captcha'])) {
$this->log($logfile, $eventData['id'], 'REJECTED', sprintf(PLUGIN_EVENT_SPAMBLOCK_REASON_CAPTCHAS, $serendipity['POST']['captcha'], $_SESSION['spamblock']['captcha']), $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_CAPTCHAS;
return false;
} else {
// DEBUG
// $this->log($logfile, $eventData['id'], 'REJECTED', 'Captcha passed: ' . $serendipity['POST']['captcha'] . ' / ' . $_SESSION['spamblock']['captcha'] . ' // Source: ' . $_SERVER['REQUEST_URI'], $addData);
}
} else {
// DEBUG
// $this->log($logfile, $eventData['id'], 'REJECTED', 'Captcha not needed: ' . $serendipity['POST']['captcha'] . ' / ' . $_SESSION['spamblock']['captcha'] . ' // Source: ' . $_SERVER['REQUEST_URI'], $addData);
}
// Check for forced comment moderation (X days)
if ($addData['type'] == 'NORMAL' && $forcemoderation > 0 && $eventData['timestamp'] < (time() - ($forcemoderation * 60 * 60 * 24))) {
$this->log($logfile, $eventData['id'], $forcemoderation_treat, PLUGIN_EVENT_SPAMBLOCK_REASON_FORCEMODERATION, $addData);
if ($forcemoderation_treat == 'reject') {
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_REASON_FORCEMODERATION;
return false;
} else {
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_REASON_FORCEMODERATION;
}
}
// Check for forced trackback moderation
if ($addData['type'] != 'NORMAL' && $forcemoderationt > 0 && $eventData['timestamp'] < (time() - ($forcemoderationt * 60 * 60 * 24))) {
$this->log($logfile, $eventData['id'], $forcemoderationt_treat, PLUGIN_EVENT_SPAMBLOCK_REASON_FORCEMODERATION, $addData);
if ($forcemoderationt_treat == 'reject') {
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_REASON_FORCEMODERATION;
return false;
} else {
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_REASON_FORCEMODERATION;
}
}
// Check for maximum number of links before forcing moderation
if ($links_moderate > 0 && $link_count > $links_moderate) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_LINKS_MODERATE, $addData);
$eventData['moderate_comments'] = true;
$serendipity['csuccess'] = 'moderate';
$serendipity['moderate_reason'] = PLUGIN_EVENT_SPAMBLOCK_REASON_LINKS_MODERATE;
}
// Check for identical comments. We allow to bypass trackbacks from our server to our own blog.
if ( $this->get_config('bodyclone', true) === true && $_SERVER['REMOTE_ADDR'] != $_SERVER['SERVER_ADDR']) {
$query = "SELECT count(id) AS counter FROM {$serendipity['dbPrefix']}comments WHERE body = '" . serendipity_db_escape_string($addData['comment']) . "'";
$row = serendipity_db_query($query, true);
if (is_array($row) && $row['counter'] > 0) {
$this->IsHardcoreSpammer();
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_BODYCLONE, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_BODY;
return false;
}
}
// Check last IP
if ($addData['type'] == 'NORMAL' && $this->get_config('ipflood', 2) != 0 ) {
$query = "SELECT max(timestamp) AS last_post FROM {$serendipity['dbPrefix']}comments WHERE ip = '" . serendipity_db_escape_string($_SERVER['REMOTE_ADDR']) . "'";
$row = serendipity_db_query($query, true);
if (is_array($row) && $row['last_post'] > (time() - $this->get_config('ipflood', 2)*60)) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_IPFLOOD, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_ERROR_IP;
return false;
}
}
// Check invalid email
if ($addData['type'] == 'NORMAL' && serendipity_db_bool($this->get_config('checkmail', false))) {
if (!empty($addData['email']) && strstr($addData['email'], '@') === false) {
$this->log($logfile, $eventData['id'], 'REJECTED', PLUGIN_EVENT_SPAMBLOCK_REASON_CHECKMAIL, $addData);
$eventData = array('allow_comments' => false);
$serendipity['messagestack']['comments'][] = PLUGIN_EVENT_SPAMBLOCK_REASON_CHECKMAIL;
return false;
}
}
if ($eventData['moderate_comments'] == true) {
return false;
}
}
return true;
break;
case 'frontend_comment':
if (serendipity_db_bool($this->get_config('hide_email', false))) {
echo '<div class="serendipity_commentDirection serendipity_comment_spamblock">' . PLUGIN_EVENT_SPAMBLOCK_HIDE_EMAIL_NOTICE . '</div>';
}
if (serendipity_db_bool($this->get_config('csrf', true))) {
echo serendipity_setFormToken('form');
}
// Check whether to allow comments from registered authors
if (serendipity_userLoggedIn() && $this->inGroup()) {
return true;
}
if ($show_captcha) {
echo '<div class="serendipity_commentDirection serendipity_comment_captcha">';
if (!isset($serendipity['POST']['preview']) || strtolower($serendipity['POST']['captcha'] != strtolower($_SESSION['spamblock']['captcha']))) {
echo '<br />' . PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_USERDESC . '<br />';
$this->show_captcha($use_gd);
echo '<br />';
echo '<label for="captcha">'. PLUGIN_EVENT_SPAMBLOCK_CAPTCHAS_USERDESC3 . '</label><br /><input class="input_textbox" type="text" size="5" name="serendipity[captcha]" value="" id="captcha" />';
} elseif (isset($serendipity['POST']['captcha'])) {
echo '<input type="hidden" name="serendipity[captcha]" value="' . htmlspecialchars($serendipity['POST']['captcha']) . '" />';
}
echo '</div>';
}
return true;
break;
case 'external_plugin':
$parts = explode('_', $eventData);
if (!empty($parts[1])) {
$param = (int) $parts[1];
} else {
$param = null;
}
$methods = array('captcha');
if (!in_array($parts[0], $methods)) {
return;
}
list($musec, $msec) = explode(' ', microtime());
$srand = (float) $msec + ((float) $musec * 100000);
srand($srand);
mt_srand($srand);
$width = 120;
$height = 40;
$bgcolors = explode(',', $this->get_config('captcha_color', '255,255,255'));
$fontfiles = array('Vera.ttf', 'VeraSe.ttf', 'chumbly.ttf', '36daysago.ttf');
if ($use_gd) {
$strings = $this->random_string($max_char, $min_char);
$fontname = $fontfiles[array_rand($fontfiles)];
$font = $serendipity['serendipityPath'] . 'plugins/serendipity_event_spamblock/' . $fontname;
if (!file_exists($font)) {
// Search in shared plugin directory
$font = S9Y_INCLUDE_PATH . 'plugins/serendipity_event_spamblock/' . $fontname;
}
if (!file_exists($font)) {
die(PLUGIN_EVENT_SPAMBLOCK_ERROR_NOTTF);
}
header('Content-Type: image/jpeg');
$image = imagecreate($width, $height);
$bgcol = imagecolorallocate($image, trim($bgcolors[0]), trim($bgcolors[1]), trim($bgcolors[2]));
// imagettftext($image, 10, 1, 1, 15, imagecolorallocate($image, 255, 255, 255), $font, 'String: ' . $string);
$pos_x = 5;
foreach($strings AS $idx => $charidx) {
$color = imagecolorallocate($image, mt_rand(50, 235), mt_rand(50, 235), mt_rand(50,235));
$size = mt_rand(15, 21);
$angle = mt_rand(-20, 20);
$pos_y = ceil($height - (mt_rand($size/3, $size/2)));
imagettftext(
$image,
$size,
$angle,
$pos_x,
$pos_y,
$color,
$font,
$this->chars[$charidx]
);
$pos_x = $pos_x + $size + 2;
}
if ($_captchas === 'scramble') {
$line_diff = mt_rand(5, 15);
$pixel_col = imagecolorallocate($image, trim($bgcolors[0])-mt_rand(10,50), trim($bgcolors[1])-mt_rand(10,50), trim($bgcolors[2])-mt_rand(10,50));
for ($y = $line_diff; $y < $height; $y += $line_diff) {
$row_diff = mt_rand(5, 15);
for ($x = $row_diff; $x < $width; $x+= $row_diff) {
imagerectangle($image, $x, $y, $x+1, $y+1, $pixel_col);
}
}
}
imagejpeg($image, '', 90);
imagedestroy($image);
} else {
header('Content-Type: image/png');
$output_char = strtolower($_SESSION['spamblock']['captcha']{$parts[1] - 1});
$cap = $serendipity['serendipityPath'] . 'plugins/serendipity_event_spamblock/captcha_' . $output_char . '.png';
if (!file_exists($cap)) {
$cap = S9Y_INCLUDE_PATH . 'plugins/serendipity_event_spamblock/captcha_' . $output_char . '.png';
}
if (file_exists($cap)) {
echo file_get_contents($cap);
}
}
return true;
break;
case 'backend_comments_top':
// Add Author to blacklist. If already filtered, it will be removed from the filter. (AKA "Toggle")
if (isset($serendipity['GET']['spamBlockAuthor'])) {
$item = $this->getComment('author', $serendipity['GET']['spamBlockAuthor']);
$items = &$this->checkFilter('authors', $item, true);
$this->set_config('contentfilter_authors', implode(';', $items));
}
// Add URL to blacklist. If already filtered, it will be removed from the filter. (AKA "Toggle")
if (isset($serendipity['GET']['spamBlockURL'])) {
$item = $this->getComment('url', $serendipity['GET']['spamBlockURL']);
$items = &$this->checkFilter('urls', $item, true);
$this->set_config('contentfilter_urls', implode(';', $items));
}
// Add E-mail to blacklist. If already filtered, it will be removed from the filter. (AKA "Toggle")
if (isset($serendipity['GET']['spamBlockEmail'])) {
$item = $this->getComment('email', $serendipity['GET']['spamBlockEmail']);
$items = &$this->checkFilter('emails', $item, true);
$this->set_config('contentfilter_emails', implode(';', $items));
}
echo ' - ' . WORD_OR . ' - <a class="serendipityPrettyButton" href="serendipity_admin.php?serendipity[adminModule]=plugins&serendipity[plugin_to_conf]=' . $this->instance . '">' . PLUGIN_EVENT_SPAMBLOCK_CONFIG . '</a>';
return true;
break;
case 'backend_view_comment':
$author_is_filtered = $this->checkFilter('authors', $eventData['author']);
$clink1 = 'clink1' . $eventData['id'];
$clink2 = 'clink2' . $eventData['id'];
$eventData['action_author'] .= ' <a id="' . $clink1 . '" class="serendipityIconLink" title="' . ($author_is_filtered ? PLUGIN_EVENT_SPAMBLOCK_REMOVE_AUTHOR : PLUGIN_EVENT_SPAMBLOCK_ADD_AUTHOR) . '" href="serendipity_admin.php?serendipity[adminModule]=comments&serendipity[spamBlockAuthor]=' . $eventData['id'] . $addData . '#' . $clink1 . '"><img src="' . serendipity_getTemplateFile('admin/img/' . ($author_is_filtered ? 'un' : '') . 'configure.png') . '" alt="" /></a>';
if (!empty($eventData['url'])) {
$url_is_filtered = $this->checkFilter('urls', $eventData['url']);
$eventData['action_url'] .= ' <a id="' . $clink2 . '" class="serendipityIconLink" title="' . ($url_is_filtered ? PLUGIN_EVENT_SPAMBLOCK_REMOVE_URL : PLUGIN_EVENT_SPAMBLOCK_ADD_URL) . '" href="serendipity_admin.php?serendipity[adminModule]=comments&serendipity[spamBlockURL]=' . $eventData['id'] . $addData . '#' . $clink2 . '"><img src="' . serendipity_getTemplateFile('admin/img/' . ($url_is_filtered ? 'un' : '') . 'configure.png') . '" alt="" /></a>';
}
if (!empty($eventData['email'])) {
$email_is_filtered = $this->checkFilter('emails', $eventData['email']);
$eventData['action_email'] .= ' <a id="' . $clink2 . '" class="serendipityIconLink" title="' . ($email_is_filtered ? PLUGIN_EVENT_SPAMBLOCK_REMOVE_EMAIL : PLUGIN_EVENT_SPAMBLOCK_ADD_EMAIL) . '" href="serendipity_admin.php?serendipity[adminModule]=comments&serendipity[spamBlockEmail]=' . $eventData['id'] . $addData . '#' . $clink2 . '"><img src="' . serendipity_getTemplateFile('admin/img/' . ($email_is_filtered ? 'un' : '') . 'configure.png') . '" alt="" /></a>';
}
return true;
break;
default:
return false;
break;
}
} else {
return false;
}
}
function &checkFilter($what, $match, $getItems = false) {
$items = explode(';', $this->get_config('contentfilter_' . $what, $this->filter_defaults[$what]));
$filtered = false;
if (is_array($items)) {
foreach($items AS $key => $item) {
if (empty($match)) {
continue;
}
if (empty($item)) {
unset($items[$key]);
continue;
}
if (preg_match('@' . $item . '@', $match)) {
$filtered = true;
unset($items[$key]);
}
}
}
if ($getItems) {
if (!$filtered && !empty($match)) {
$items[] = preg_quote($match, '@');
}
return $items;
}
return $filtered;
}
function getComment($key, $id) {
global $serendipity;
$c = serendipity_db_query("SELECT $key FROM {$serendipity['dbPrefix']}comments WHERE id = '" . (int)$id . "'", true, 'assoc');
if (!is_array($c) || !isset($c[$key])) {
return false;
}
return $c[$key];
}
function random_string($max_char, $min_char) {
$this->chars = array(2, 3, 4, 7, 9); // 1, 5, 6 and 8 may look like characters.
$this->chars = array_merge($this->chars, array('A','B','C','D','E','F','H','J','K','L','M','N','P','Q','R','T','U','V','W','X','Y','Z')); // I, O, S may look like numbers
$strings = array_rand($this->chars, mt_rand($min_char, $max_char));
$string = '';
foreach($strings AS $idx => $charidx) {
$string .= $this->chars[$charidx];
}
$_SESSION['spamblock'] = array('captcha' => $string);
return $strings;
}
function log($logfile, $id, $switch, $reason, $comment) {
global $serendipity;
$method = $this->get_config('logtype');
switch($method) {
case 'file':
if (empty($logfile)) {
return;
}
$fp = @fopen($logfile, 'a+');
if (!is_resource($fp)) {
return;
}
fwrite($fp, sprintf(
'[%s] - [%s: %s] - [#%s, Name "%s", E-Mail "%s", URL "%s", User-Agent "%s", IP %s] - [%s]' . "\n",
date('Y-m-d H:i:s', serendipity_serverOffsetHour()),
$switch,
$reason,
$id,
str_replace("\n", ' ', $comment['name']),
str_replace("\n", ' ', $comment['email']),
str_replace("\n", ' ', $comment['url']),
str_replace("\n", ' ', $_SERVER['HTTP_USER_AGENT']),
$_SERVER['REMOTE_ADDR'],
str_replace("\n", ' ', $comment['comment'])
));
fclose($fp);
break;
case 'none':
return;
break;
case 'db':
default:
$q = sprintf("INSERT INTO {$serendipity['dbPrefix']}spamblocklog
(timestamp, type, reason, entry_id, author, email, url, useragent, ip, referer, body)
VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
serendipity_serverOffsetHour(),
serendipity_db_escape_string($switch),
serendipity_db_escape_string($reason),
serendipity_db_escape_string($id),
serendipity_db_escape_string($comment['name']),
serendipity_db_escape_string($comment['email']),
serendipity_db_escape_string($comment['url']),
substr(serendipity_db_escape_string($_SERVER['HTTP_USER_AGENT']), 0, 255),
serendipity_db_escape_string($_SERVER['REMOTE_ADDR']),
substr(serendipity_db_escape_string(isset($_SESSION['HTTP_REFERER']) ? $_SESSION['HTTP_REFERER'] : $_SERVER['HTTP_REFERER']), 0, 255),
serendipity_db_escape_string($comment['comment'])
);
serendipity_db_query($q);
break;
}
}
}
/* vim: set sts=4 ts=4 expandtab : */