* $Id$
*/
+function filters_SaveCache () {
+ global $data_dir, $SpamFilters_DNScache;
+
+ if (file_exists($data_dir . "/dnscache")) {
+ $fp = fopen($data_dir . "/dnscache", "r");
+ } else {
+ $fp = false;
+ }
+ if ($fp) {
+ flock($fp,LOCK_EX);
+ } else {
+ $fp = fopen($data_dir . "/dnscache", "w+");
+ fclose($fp);
+ $fp = fopen($data_dir . "/dnscache", "r");
+ flock($fp,LOCK_EX);
+ }
+ $fp1=fopen($data_dir . "/dnscache", "w+");
+
+ foreach ($SpamFilters_DNScache as $Key=> $Value) {
+ $tstr = $Key . ',' . $Value['L'] . ',' . $Value['T'] . "\n";
+ fputs ($fp1, $tstr);
+ }
+ fclose($fp1);
+ flock($fp,LOCK_UN);
+ fclose($fp);
+}
+
+
+function filters_LoadCache () {
+ global $data_dir, $SpamFilters_DNScache;
+
+ if (file_exists($data_dir . "/dnscache")) {
+ if ($fp = fopen ($data_dir . "/dnscache", "r")) {
+ flock($fp,LOCK_SH);
+ while ($data=fgetcsv($fp,1024)) {
+ if ($data[2] > time()) {
+ $SpamFilters_DNScache[$data[0]]['L'] = $data[1];
+ $SpamFilters_DNScache[$data[0]]['T'] = $data[2];
+ }
+ }
+
+ flock($fp,LOCK_UN);
+ }
+ }
+}
+
+function filters_bulkquery($filters_spam_scan, $filters, $read) {
+ global $SpamFilters_YourHop, $attachment_dir, $username,
+ $SpamFilters_DNScache, $SpamFilters_BulkQuery;
+
+ $IPs = array();
+ $i = 0;
+ while ($i < count($read)) {
+ // EIMS will give funky results
+ $Chunks = explode(' ', $read[$i]);
+ if ($Chunks[0] != '*') {
+ $i ++;
+ continue;
+ }
+ $MsgNum = $Chunks[1];
+
+ $i ++;
+ $Scan = 1;
+
+ // Check for normal IMAP servers
+ if ($filters_spam_scan == 'new') {
+ if (is_int(strpos($Chunks[4], '\Seen'))) {
+ $Scan = 0;
+ }
+ }
+
+ // Look through all of the Received headers for IP addresses
+ // Stop when I get ")" on a line
+ // Stop if I get "*" on a line (don't advance)
+ // and above all, stop if $i is bigger than the total # of lines
+ while (($i < count($read)) &&
+ ($read[$i][0] != ')' && $read[$i][0] != '*' &&
+ $read[$i][0] != "\n")) {
+ // Check to see if this line is the right "Received from" line
+ // to check
+ if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
+
+ // short-circuit and skip work if we don't scan this one
+ if ($Scan) {
+ $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
+ $elements = explode(' ', $read[$i]);
+ foreach ($elements as $value) {
+ if ($value != '' &&
+ ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
+ $value, $regs)) {
+ $Chunks = explode('.', $value);
+ $IP = $Chunks[3] . '.' . $Chunks[2] . '.' .
+ $Chunks[1] . '.' . $Chunks[0];
+ foreach ($filters as $key => $value) {
+ if ($filters[$key]['enabled'] &&
+ $filters[$key]['dns']) {
+ if (strlen($SpamFilters_DNScache[$IP.'.'.$filters[$key]['dns']]) == 0) {
+ $IPs[$IP] = true;
+ break;
+ }
+ }
+ }
+ // If we've checked one IP and YourHop is
+ // just a space
+ if ($SpamFilters_YourHop == ' ') {
+ break; // don't check any more
+ }
+ }
+ }
+ }
+ }
+ $i ++;
+ }
+ }
+
+ if (count($IPs) > 0) {
+ $rbls = array();
+ foreach ($filters as $key => $value) {
+ if ($filters[$key]['enabled']) {
+ if ($filters[$key]['dns']) {
+ $rbls[$filters[$key]['dns']] = true;
+ }
+ }
+ }
+
+ $bqfil = $attachment_dir . $username . "-bq.in";
+ $fp = fopen($bqfil, "w");
+ foreach ($rbls as $key => $value) {
+ fputs ($fp, "." . $key . "\n");
+ }
+ fputs ($fp, "----------\n");
+ foreach ($IPs as $key => $value) {
+ fputs ($fp, $key . "\n");
+ }
+ fclose ($fp);
+ $bqout = array();
+ exec ($SpamFilters_BulkQuery . " < " . $bqfil, $bqout);
+ foreach ($bqout as $value) {
+ $Chunks = explode(',', $value);
+ $SpamFilters_DNScache[$Chunks[0]]['L'] = $Chunks[1];
+ $SpamFilters_DNScache[$Chunks[0]]['T'] = $Chunks[2] + time();
+ }
+ unlink($bqfil);
+ }
+}
+
+
function filters_sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
global $color, $squirrelmail_language, $imap_general_debug;
global $data_dir, $username;
global $SpamFilters_YourHop;
global $SpamFilters_DNScache;
+ global $SpamFilters_SharedCache;
+ global $SpamFilters_BulkQuery;
$filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
$filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
$filters = load_spam_filters();
+ if ($SpamFilters_SharedCache) {
+ filters_LoadCache();
+ }
+
$run = 0;
foreach ($filters as $Key=> $Value) {
return;
}
+ if (strlen($SpamFilters_BulkQuery) > 0) {
+ filters_bulkquery($filters_spam_scan, $filters, $read);
+ }
+
$i = 0;
while ($i < count($read)) {
// EIMS will give funky results
sqimap_mailbox_expunge($imap_stream, 'INBOX');
- session_register('SpamFilters_DNScache');
+ if ($SpamFilters_SharedCache) {
+ filters_SaveCache();
+ } else {
+ session_register('SpamFilters_DNScache');
+ }
}
// Does the loop through each enabled filter for the specified IP address.
// IP format: $a.$b.$c.$d
function filters_spam_check_site($a, $b, $c, $d, &$filters) {
- global $SpamFilters_DNScache;
+ global $SpamFilters_DNScache, $SpamFilters_CacheTTL;
foreach ($filters as $key => $value) {
if ($filters[$key]['enabled']) {
if ($filters[$key]['dns']) {
$filter_revip = $d . '.' . $c . '.' . $b . '.' . $a . '.' .
$filters[$key]['dns'];
- if (strlen($SpamFilters_DNScache[$filter_revip]) == 0) {
- $SpamFilters_DNScache[$filter_revip] =
+ if (strlen($SpamFilters_DNScache[$filter_revip]['L']) == 0) {
+ $SpamFilters_DNScache[$filter_revip]['L'] =
gethostbyname($filter_revip);
+ $SpamFilters_DNScache[$filter_revip]['T'] =
+ time() + $SpamFilters_CacheTTL;
}
- if ($SpamFilters_DNScache[$filter_revip] ==
+ if ($SpamFilters_DNScache[$filter_revip]['L'] ==
$filters[$key]['result']) {
return 1;
}
renaming or deleting folders */
function update_for_folder ($args) {
$old_folder = $args[0];
- $new_folder = $args[2];
- $action = $args[1];
+ $new_folder = $args[2];
+ $action = $args[1];
global $plugins, $data_dir, $username;
$filters = array();
$filters = load_filters();
* Some of the SPAM filters are COMMERCIAL and require a fee. If your users
* select them and you're not allowed to use them, it will make SPAM filtering
* very slow. If you don't want them to even be offered to the users, you
- * set SpamFilters_ShowCommercial to false.
+ * should set SpamFilters_ShowCommercial to false.
*/
global $SpamFilters_ShowCommercial;
-$SpamFilters_ShowCommercial = true;
+$SpamFilters_ShowCommercial = false;
/*
* A cache of IPs we've already checked or are known bad boys or good boys
*/
global $SpamFilters_DNScache;
+/*
+ * Absolute path to the bulkquery program. Leave blank if you don't have
+ * bulkquery compiled, installed, and lwresd running. See the README file
+ * in the bulkquery directory for more information on using bulkquery.
+ */
+global $SpamFilters_BulkQuery;
+$SpamFilters_BulkQuery = "";
+
+/*
+ * Do you want to use a shared file for the DNS cache or a session variable?
+ * Using a shared file means that every user can benefit from any queries
+ * made by other users. The shared file is named "dnscache" and is in the
+ * data directory.
+ */
+global $SpamFilters_SharedCache;
+$SpamFilters_SharedCache = true;
+
+/*
+ * How long should DNS query results be cached for by default (in seconds)?
+ */
+global $SpamFilters_CacheTTL;
+$SpamFilters_CacheTTL = 7200;
+
require_once ('../plugins/filters/filters.php');
function squirrelmail_plugin_init_filters() {
$squirrelmail_plugin_hooks['rename_or_delete_folder']['filters'] = 'update_for_folder';
$squirrelmail_plugin_hooks['webmail_bottom']['filters'] = 'start_filters';
}
-
+
function filters_special_mailbox( $mb ) {
GLOBAL $data_dir, $username;
projects / squirrelmail.git / commitdiff