function spamshield_gf_spam_check($spam)
{
/***
* Checks Gravity Forms submissions for spam
* Added 1.8.9.9
***/
$spamshield_options = get_option('spamshield_options');
spamshield_update_session_data($spamshield_options);
if (!empty($spamshield_options['disable_gf_shield'])) {
return $spam;
}
$gf_filter_status = $wpss_error_code = '';
$gf_jsck_error = $gf_badrobot_error = FALSE;
$pref = 'GF-';
$server_name = RSMP_SERVER_NAME;
$server_email_domain = spamshield_get_email_domain($server_name);
$gf_serial_post = serialize($_POST);
$form_auth_dat = array('comment_author' => '', 'comment_author_email' => '', 'comment_author_url' => '');
/* JS/JQUERY CHECK */
$wpss_key_values = spamshield_get_key_values();
$wpss_jq_key = $wpss_key_values['wpss_jq_key'];
$wpss_jq_val = $wpss_key_values['wpss_jq_val'];
if (TRUE == WPSS_COMPAT_MODE) {
// Fall back to FVFJS Keys instead of jQuery keys from jscripts.php
$wpss_jq_key = $wpss_key_values['wpss_js_key'];
$wpss_jq_val = $wpss_key_values['wpss_js_val'];
}
$wpss_jsck_jquery_val = !empty($_POST[$wpss_jq_key]) ? $_POST[$wpss_jq_key] : '';
if (!empty($_POST) && (!isset($_POST[WPSS_REF2XJS]) || $wpss_jsck_jquery_val != $wpss_jq_val)) {
$wpss_error_code .= ' ' . $pref . 'JQHFT-7';
}
/* EMAIL BLACKLIST */
foreach ($_POST as $k => $v) {
if (!is_string($v)) {
continue;
}
$k_lc = spamshield_casetrans('lower', $k);
$v_lc = spamshield_casetrans('lower', trim(stripslashes($v)));
/* if ( strpos( $k_lc, 'email' ) !== FALSE && is_email( $v_lc ) ) { */
if (is_email($v_lc)) {
$email_domain = spamshield_get_domain_from_email($v_lc);
if ($email_domain == $server_email_domain) {
continue;
}
if (spamshield_email_blacklist_chk($v_lc)) {
$wpss_error_code .= ' ' . $pref . '9200E-BL';
break;
}
}
}
/* CONTACT FORM CONTENT BLACKLIST */
foreach ($_POST as $k => $v) {
if (!is_string($v)) {
continue;
}
/* $k_lc = spamshield_casetrans('lower',$k); */
$v_lc = spamshield_casetrans('lower', trim(stripslashes($v)));
if (spamshield_cf_content_blacklist_chk($v_lc)) {
$wpss_error_code .= ' ' . $pref . '10400C-BL';
break;
}
}
/* BAD ROBOT BLACKLIST */
$bad_robot_filter_data = spamshield_bad_robot_blacklist_chk('gravity forms', $gf_filter_status);
if (!empty($bad_robot_filter_data['blacklisted'])) {
$wpss_error_code .= $bad_robot_filter_data['error_code'];
$gf_badrobot_error = TRUE;
}
/* BLACKLISTED USER */
if (empty($wpss_error_code) && spamshield_ubl_cache()) {
$wpss_error_code .= ' ' . $pref . '0-BL';
}
$wpss_error_code = trim($wpss_error_code);
if (!empty($wpss_error_code)) {
$spam = TRUE;
spamshield_update_accept_status($form_auth_dat, 'r', 'Line: ' . __LINE__, $wpss_error_code);
if (!empty($spamshield_options['comment_logging'])) {
spamshield_log_data($form_auth_dat, $wpss_error_code, 'gravity forms', $gf_serial_post);
}
} else {
spamshield_update_accept_status($form_auth_dat, 'a', 'Line: ' . __LINE__);
if (!empty($spamshield_options['comment_logging']) && !empty($spamshield_options['comment_logging_all'])) {
spamshield_log_data($form_auth_dat, $wpss_error_code, 'gravity forms', $gf_serial_post);
}
}
return $spam;
}
function spamshield_cf_link_spam_url_chk($haystack = NULL, $email = NULL)
{
/***
* Contact Form Link Spam URL Check
* Check Anchor Text Links in message content for links to shortened URLs
* $haystack is contact form message content
***/
$blacklist_status = FALSE;
if (empty($haystack) || empty($email)) {
return FALSE;
}
$email_domain = spamshield_get_email_domain($email);
$extracted_urls = spamshield_parse_links($haystack, 'url');
foreach ($extracted_urls as $u => $url) {
if (spamshield_urlshort_blacklist_chk($url, $email_domain)) {
return TRUE;
}
}
return $blacklist_status;
}