* Also view plugins/README.plugins for more information.
*
* $Id$
+ * @package plugins
+ * @subpackage filters
*/
+/**
+*
+*/
function filters_SaveCache () {
global $data_dir, $SpamFilters_DNScache;
}
}
-function filters_bulkquery($filters_spam_scan, $filters, $read) {
+function filters_bulkquery($filters, $IPs) {
global $SpamFilters_YourHop, $attachment_dir, $username,
$SpamFilters_DNScache, $SpamFilters_BulkQuery,
$SpamFilters_CacheTTL;
- $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 ++;
-
- // 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))) {
- $read[$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) {
$filters_user_scan = getPref($data_dir, $username, 'filters_user_scan');
sqimap_mailbox_select($imap_stream, 'INBOX');
- $id = array();
+ $expunge = false;
// For every rule
for ($i=0, $num = count($filters); $i < $num; $i++) {
// If it is the "combo" rule
* If it's "TO OR CC", we have to do two searches, one for TO
* and the other for CC.
*/
- $id = filter_search_and_delete($imap_stream, 'TO',
- $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $id);
- $id = filter_search_and_delete($imap_stream, 'CC',
- $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $id);
+ $expunge = filter_search_and_delete($imap_stream, 'TO',
+ $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $expunge);
+ $expunge = filter_search_and_delete($imap_stream, 'CC',
+ $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $expunge);
} else {
/*
* If it's a normal TO, CC, SUBJECT, or FROM, then handle it
* normally.
*/
- $id = filter_search_and_delete($imap_stream, $filters[$i]['where'],
- $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $id);
+ $expunge = filter_search_and_delete($imap_stream, $filters[$i]['where'],
+ $filters[$i]['what'], $filters[$i]['folder'], $filters_user_scan, $expunge);
}
}
// Clean out the mailbox whether or not auto_expunge is on
// That way it looks like it was redirected properly
- if (count($id)) {
+ if ($expunge) {
sqimap_mailbox_expunge($imap_stream, 'INBOX');
}
}
-function filter_search_and_delete($imap, $where, $what, $where_to, $user_scan,
- $del_id) {
+function filter_search_and_delete($imap_stream, $where, $what, $where_to, $user_scan,
+ $should_expunge) {
global $languages, $squirrelmail_language, $allow_charset_search,
$uid_support, $imap_server_type;
if ($user_scan == 'new') {
}
/* read data back from IMAP */
- $read = sqimap_run_command($imap, $search_str, true, $response, $message, $uid_support);
+ $read = sqimap_run_command($imap_stream, $search_str, true, $response, $message, $uid_support);
// This may have problems with EIMS due to it being goofy
substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
if ($response == 'OK') {
$ids = explode(' ', $read[$r]);
- if (sqimap_mailbox_exists($imap, $where_to)) {
+
+ if (sqimap_mailbox_exists($imap_stream, $where_to)) {
+ $del_id = array();
for ($j=2, $num = count($ids); $j < $num; $j++) {
$id = trim($ids[$j]);
- $del_id[] = $id;
- sqimap_messages_copy ($imap, $id, $id, $where_to);
- sqimap_messages_flag ($imap, $id, $id, 'Deleted',false);
+ if (is_numeric($id)) {
+ $del_id[] = $id;
+ }
+ }
+ if (count($del_id)) {
+ $should_expunge = true;
+ sqimap_msgs_list_move ($imap_stream, $del_id, $where_to);
+ // sqimap_mailbox_expunge($imap_stream, 'INBOX');
}
}
}
- return $del_id;
+ return $should_expunge;
}
// These are the spam filters
global $SpamFilters_DNScache;
global $SpamFilters_SharedCache;
global $SpamFilters_BulkQuery;
+ global $SpamFilters_CacheTTL;
$filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
$filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
filters_LoadCache();
}
- $run = 0;
+ $run = false;
- foreach ($filters as $Key=> $Value) {
+ foreach ($filters as $Key => $Value) {
if ($Value['enabled']) {
- $run ++;
+ $run = true;
+ break;
}
}
// short-circuit
- if ($run == 0) {
+ if (!$run) {
return;
}
// Ask for a big list of all "Received" headers in the inbox with
// flags for each message. Kinda big.
+
+ // MGK, removed FLAGS from query. It wasn't used.
if ($filters_spam_scan != 'new') {
- $read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
- '(RECEIVED)])', true, $response, $message, $uid_support);
+ $query = 'FETCH 1:* (BODY.PEEK[HEADER.FIELDS (Received)])';
} else {
$read = sqimap_run_command($imap_stream, 'SEARCH UNSEEN', true, $response, $message, $uid_support);
if ($response != 'OK' || trim($read[0]) == '* SEARCH') {
- $read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
- '(RECEIVED)])', true, $response, $message, $uid_support);
+ $query = 'FETCH 1:* (BODY.PEEK[HEADER.FIELDS (RECEIVED)])';
} else {
if (isset($read[0])) {
if (preg_match("/^\* SEARCH (.+)$/", $read[0], $regs)) {
$search_array = preg_split("/ /", trim($regs[1]));
}
}
- $msgs_str = sqimap_message_list_squisher($search_array);
- $imap_query = 'FETCH '.$msgs_str;
- $imap_query .= ' (FLAGS BODY.PEEK[HEADER.FIELDS ';
- $imap_query .= '(RECEIVED)])';
- $read = sqimap_run_command($imap_stream,$imap_query, true, $response, $message, $uid_support);
- }
+ $msgs_str = sqimap_message_list_squisher($search_array);
+ $query = 'FETCH ' . $msgs_str . ' (BODY.PEEK[HEADER.FIELDS (RECEIVED)])';
+ }
}
-
- if (isset($response) && $response != 'OK') {
+ $headers = filter_get_headers ($imap_stream, $query);
+ if (!$headers) {
return;
}
-
- if (strlen($SpamFilters_BulkQuery) > 0) {
- filters_bulkquery($filters_spam_scan, $filters, $read);
- }
-
- $i = 0;
- while ($i < count($read)) {
- // EIMS will give funky results
- $Chunks = explode(' ', $read[$i]);
- if ($Chunks[0] != '*') {
- $i ++;
- continue;
+
+ $bulkquery = (strlen($SpamFilters_BulkQuery) > 0 ? true : false);
+ $IPs = array();
+ $aSpamIds = array();
+ foreach ($headers as $id => $aValue) {
+ if (isset($aValue['UID'])) {
+ $MsgNum = $aValue['UID'];
+ } else {
+ $MsgNum = $id;
}
- $MsgNum = $Chunks[1];
-
- $IPs = array();
- $i ++;
- $IsSpam = 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") && (! $IsSpam)) {
- // Check to see if this line is the right "Received from" line
- // to check
- if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
-
- // short-circuit and skip work if we don't scan this one
- $read[$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('.', $value);
- if (filters_spam_check_site($Chunks[0],
- $Chunks[1], $Chunks[2], $Chunks[3],
- $filters)) {
- $IsSpam ++;
- break; // no sense in checking more IPs
+ if (isset($aValue['HEADER']['Received'])) {
+ foreach ($aValue['HEADER']['Received'] as $received) {
+ // Check to see if this line is the right "Received from" line
+ // to check
+
+ // $aValue['HEADER']['Received'] is an array with all the received lines.
+ // We should check them from bottom to top and only check the first 2.
+ // Currently we check only the header where $SpamFilters_YourHop in occures
+
+ if (is_int(strpos($received, $SpamFilters_YourHop))) {
+ if (preg_match('/([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})/',$received,$aMatch)) {
+ $isspam = false;
+ if (filters_spam_check_site($aMatch[1],$aMatch[2],$aMatch[3],$aMatch[4],$filters)) {
+ $aSpamIds[] = $MsgNum;
+ $isspam = true;
+ }
+ if ($bulkquery) {
+ array_shift($aMatch);
+ $IP = explode('.',$aMatch);
+ 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 ($SpamFilters_YourHop == ' ') {
+ if ($SpamFilters_YourHop == ' ' || $isspam) {
break; // don't check any more
}
}
}
}
- $i ++;
- }
-
- // Lookie! It's spam! Yum!
- if ($IsSpam) {
- if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
- sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
- $filters_spam_folder);
- sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum,
- 'Deleted', false);
- }
- } else {
}
}
+ // Lookie! It's spam! Yum!
+ if (count($aSpamIds) && sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
+ sqimap_msgs_list_move ($imap_stream, $aSpamIds, $filters_spam_folder);
+ sqimap_mailbox_expunge($imap_stream, 'INBOX');
+ }
- sqimap_mailbox_expunge($imap_stream, 'INBOX');
+ if ($bulkquery && count($IPs)) {
+ filters_bulkquery($filters, $IPs);
+ }
if ($SpamFilters_SharedCache) {
filters_SaveCache();
} else {
sqsession_register($SpamFilters_DNScache, 'SpamFilters_DNScache');
}
-
}
// Does the loop through each enabled filter for the specified IP address.
}
}
}
+/*
+ * Function extracted from sqimap_get_small_header_list.
+ * The unused FETCH arguments and HEADERS are disabled.
+ */
+function filter_get_headers ($imap_stream, $query) {
+ global $uid_support;
+ /* Get the small headers for each message in $msg_list */
+
+ $read_list = sqimap_run_command_list ($imap_stream, $query, false, $response, $message, $uid_support);
+
+ if (isset($response) && $response != 'OK') {
+ return false;
+ }
+
+
+ foreach ($read_list as $r) {
+ $read = implode('',$r);
+ /*
+ * #id<space>FETCH<space>(
+ */
+ /* extract the message id */
+ $i_space = strpos($read,' ',2);
+ $id = substr($read,2,$i_space-2);
+ $fetch = substr($read,$i_space+1,5);
+ if (!is_numeric($id) && $fetch !== 'FETCH') {
+ set_up_language($squirrelmail_language);
+ echo '<br><b><font color=$color[2]>' .
+ _("ERROR : Could not complete request.") .
+ '</b><br>' .
+ _("Unknown response from IMAP server: ") . ' 1.' .
+ htmlspecialchars($read) . "</font><br>\n";
+ break;
+ }
+ $i = strpos($read,'(',$i_space+5);
+ $read = substr($read,$i+1);
+ $i_len = strlen($read);
+ $i = 0;
+ while ($i < $i_len && $i !== false) {
+ /* get argument */
+ $read = trim(substr($read,$i));
+ $i_len = strlen($read);
+ $i = strpos($read,' ');
+ $arg = substr($read,0,$i);
+ ++$i;
+ switch ($arg)
+ {
+ case 'UID':
+ $i_pos = strpos($read,' ',$i);
+ if (!$i_pos) {
+ $i_pos = strpos($read,')',$i);
+ }
+ if ($i_pos) {
+ $unique_id = substr($read,$i,$i_pos-$i);
+ $i = $i_pos+1;
+ } else {
+ break 3;
+ }
+ $msgs[$id]['UID'] = $unique_id;
+ break;
+ // case 'FLAGS':
+ // $flags = parseArray($read,$i);
+ // if (!$flags) break 3;
+ // $msgs[$id]['FLAGS'] = $flags;
+ // break;
+ // case 'RFC822.SIZE':
+ // $i_pos = strpos($read,' ',$i);
+ // if (!$i_pos) {
+ // $i_pos = strpos($read,')',$i);
+ // }
+ // if ($i_pos) {
+ // $size = substr($read,$i,$i_pos-$i);
+ // $i = $i_pos+1;
+ // } else {
+ // break 3;
+ // }
+ // $msgs[$id]['SIZE'] = $size;
+ //
+ // break;
+ // case 'INTERNALDATE':
+ // $msgs[$id]['INTERNALDATE'] = parseString($read,$i);
+ // break;
+ case 'BODY.PEEK[HEADER.FIELDS':
+ case 'BODY[HEADER.FIELDS':
+ $i = strpos($read,'{',$i);
+ $header = parseString($read,$i);
+ if ($header === false) break 3;
+ /* First we unfold the header */
+ $hdr = trim(str_replace(array("\r\n\t", "\r\n "),array('', ''), $header));
+ /* Now we can make a new header array with */
+ /* each element representing a headerline */
+ $hdr = explode("\r\n" , $hdr);
+ foreach ($hdr as $line) {
+ $pos = strpos($line, ':');
+ if ($pos > 0) {
+ $field = strtolower(substr($line, 0, $pos));
+ if (!strstr($field,' ')) { /* valid field */
+ $value = trim(substr($line, $pos+1));
+ switch($field) {
+ case 'received': $msgs[$id]['HEADER']['Received'][] = $value; break;
+ // case 'to': $msgs[$id]['HEADER']['To']= $value; break;
+ // case 'cc': $msgs[$id]['HEADER']['Cc'] = $value; break;
+ // case 'from': $msgs[$id]['HEADER']['From'] = $value; break;
+ // case 'date': $msgs[$id]['HEADER']['Date'] = $value; break;
+ // case 'x-priority': $msgs[$id]['HEADER']['Prio'] = $value; break;
+ // case 'subject': $msgs[$id]['HEADER']['Subject'] = $value; break;
+ // case 'content-type':$msgs[$id]['HEADER']['Content-Type'] = $value; break;
+ default: break;
+ }
+ }
+ }
+ }
+ break;
+ default:
+ ++$i;
+ break;
+ }
+ }
+ }
+ return $msgs;
+}
+
?>