/**
* FIXME: Undocumented function
* @access private
*/
function spam_filters($imap_stream)
{
global $data_dir, $username, $uid_support;
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 => $Value) {
if ($Value['enabled']) {
$run++;
}
}
// short-circuit
if ($run == 0) {
return;
}
sqimap_mailbox_select($imap_stream, 'INBOX');
// Ask for a big list of all "Received" headers in the inbox with
// flags for each message. Kinda big.
if ($filters_spam_scan != 'new') {
$read = sqimap_run_command($imap_stream, 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' . '(RECEIVED)])', true, $response, $message, $uid_support);
} 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, $uid_support);
} else {
if (isset($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, $uid_support);
}
}
if (isset($response) && $response != 'OK') {
return;
}
if (strlen($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;
}
$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)) {
$IsSpam++;
break;
// no sense in checking more IPs
}
// If we've checked one IP and YourHop is
// just a space
if ($SpamFilters_YourHop == ' ') {
break;
// don't check any more
}
}
}
}
$i++;
}
// Lookie! It's spam! Yum!
if ($IsSpam) {
if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
// check if message copy was successful
if (sqimap_messages_copy($imap_stream, $MsgNum, $MsgNum, $filters_spam_folder, false)) {
sqimap_messages_flag($imap_stream, $MsgNum, $MsgNum, 'Deleted', false);
}
}
} else {
}
}
sqimap_mailbox_expunge($imap_stream, 'INBOX');
if ($SpamFilters_SharedCache) {
filters_SaveCache();
} else {
sqsession_register($SpamFilters_DNScache, 'SpamFilters_DNScache');
}
}
/**
* FIXME: Undocumented function
* @access private
*/
function spam_filters($imap_stream)
{
global $data_dir, $username, $uid_support;
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();
}
$run = false;
foreach ($filters as $Key => $Value) {
if ($Value['enabled']) {
$run = true;
break;
}
}
// short-circuit
if (!$run) {
return;
}
sqimap_mailbox_select($imap_stream, 'INBOX');
$search_array = array();
if ($filters_spam_scan == 'new') {
$read = sqimap_run_command($imap_stream, 'SEARCH UNSEEN', true, $response, $message, $uid_support);
if (isset($read[0])) {
for ($i = 0, $iCnt = count($read); $i < $iCnt; ++$i) {
if (preg_match("/^\\* SEARCH (.+)\$/", $read[$i], $regs)) {
$search_array = explode(' ', trim($regs[1]));
break;
}
}
}
}
if ($filters_spam_scan == 'new' && count($search_array)) {
$msg_str = sqimap_message_list_squisher($search_array);
$imap_query = 'FETCH ' . $msg_str . ' (FLAGS BODY.PEEK[HEADER.FIELDS (RECEIVED)])';
} else {
if ($filters_spam_scan != 'new') {
$imap_query = 'FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS (RECEIVED)])';
} else {
return;
}
}
$read = sqimap_run_command_list($imap_stream, $imap_query, true, $response, $message, $uid_support);
if (isset($response) && $response != 'OK') {
return;
}
$messages = parseFetch($read);
$bulkquery = strlen($SpamFilters_BulkQuery) > 0 ? true : false;
$aSpamIds = array();
foreach ($messages as $id => $message) {
if (isset($message['UID'])) {
$MsgNum = $message['UID'];
} else {
$MsgNum = $id;
}
if (isset($message['received'])) {
foreach ($message['received'] as $received) {
if (is_int(strpos($received, $SpamFilters_YourHop))) {
if (preg_match('/([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})/', $received, $matches)) {
$IsSpam = false;
if (filters_spam_check_site($matches[1], $matches[2], $matches[3], $matches[4], $filters)) {
$aSpamIds[] = $MsgNum;
$IsSpam = true;
}
if ($bulkquery) {
array_shift($matches);
$IP = explode('.', $matches);
foreach ($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 ($SpamFilters_YourHop == ' ' || $IsSpam) {
break;
}
}
}
}
}
}
if (count($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', true, $aSpamIds);
}
if ($bulkquery && count($IPs)) {
filters_bulkquery($filters, $IPs);
}
if ($SpamFilters_SharedCache) {
filters_SaveCache();
} else {
sqsession_register($SpamFilters_DNScache, 'SpamFilters_DNScache');
}
}
/**
* Loops through all the Received Headers to find IP Addresses
* @param stream imap_stream the stream to read from
* @access private
*/
function spam_filters($imap_stream)
{
global $data_dir, $username;
global $SpamFilters_YourHop;
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');
$filters = load_spam_filters();
if ($SpamFilters_SharedCache) {
filters_LoadCache();
}
$run = false;
foreach ($filters as $Value) {
if ($Value['enabled']) {
$run = true;
break;
}
}
// short-circuit
if (!$run) {
return;
}
// Ask for a big list of all "Received" headers in the inbox with
// flags for each message. Kinda big.
if ($filters_spam_scan == 'new') {
$search_array = array();
$read = sqimap_run_command($imap_stream, 'SEARCH UNSEEN', true, $response, $message, TRUE);
if (isset($read[0])) {
for ($i = 0, $iCnt = count($read); $i < $iCnt; ++$i) {
if (preg_match("/^\\* SEARCH (.+)\$/", $read[$i], $regs)) {
$search_array = explode(' ', trim($regs[1]));
break;
}
}
}
}
if ($filters_spam_scan == 'new' && count($search_array)) {
$headers = sqimap_get_small_header_list($imap_stream, $search_array, array('Received'), array());
} else {
if ($filters_spam_scan != 'new') {
$headers = sqimap_get_small_header_list($imap_stream, null, array('Received'), array());
} else {
return;
}
}
if (!count($headers)) {
return;
}
$bulkquery = strlen($SpamFilters_BulkQuery) > 0 ? true : false;
$IPs = array();
$aSpamIds = array();
foreach ($headers as $id => $aValue) {
if (isset($aValue['UID'])) {
$MsgNum = $aValue['UID'];
} else {
$MsgNum = $id;
}
// Look through all of the Received headers for IP addresses
if (isset($aValue['RECEIVED'])) {
foreach ($aValue['RECEIVED'] as $received) {
// Check to see if this line is the right "Received from" line
// to check
// $aValue['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 == ' ' || $isspam) {
break;
// don't check any more
}
}
}
}
}
}
// Lookie! It's spam! Yum!
if (count($aSpamIds) && sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
if (!sqimap_msgs_list_move($imap_stream, $aSpamIds, $filters_spam_folder)) {
// if errors occurred, don't try to filter again during this session
sqsession_register(TRUE, 'filters_error');
global $color;
error_box(_("A problem occurred filtering messages. Check filter settings and account quota if applicable. Filtering is disabled for the remainder of this login session."), $color);
}
// expunge even in the case of errors, in case some
// messages were filtered before the error happened
sqimap_mailbox_expunge($imap_stream, 'INBOX');
}
if ($bulkquery && count($IPs)) {
filters_bulkquery($filters, $IPs);
}
if ($SpamFilters_SharedCache) {
filters_SaveCache();
} else {
sqsession_register($SpamFilters_DNScache, 'SpamFilters_DNScache');
}
}