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91074ed617
piler/webui/model/search/message.php
Janos SUTO 91074ed617 gui: remove X-Piler-Envelope-To: header lines for non auditor users 
Signed-off-by: Janos SUTO <sj@acts.hu>
2018-02-21 14:56:38 +01:00

579 lines
17 KiB
PHP
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<?php
require DIR_SYSTEM . 'helper/mime.php';
class ModelSearchMessage extends Model {
public $encoding_aliases = array(
'GB2312' => 'GBK',
'GB231280' => 'GBK'
);
public $message;
private $verification = 0;
public function verify_message($piler_id = '', $data = '') {
if($piler_id == '') { return 0; }
$q = $this->db->query("SELECT `size`, `hlen`, `digest`, `bodydigest`,`attachments` FROM " . TABLE_META . " WHERE piler_id=?", array($piler_id));
$digest = $q->row['digest'];
$bodydigest = $q->row['bodydigest'];
$size = $q->row['size'];
$hlen = $q->row['hlen'];
$attachments = $q->row['attachments'];
$_digest = openssl_digest($data, "SHA256");
$_bodydigest = openssl_digest(substr($data, $hlen), "SHA256");
if($_digest == $digest && $_bodydigest == $bodydigest) {
if(TSA_PUBLIC_KEY_FILE) {
$id = $this->get_id_by_piler_id($piler_id);
if($this->check_rfc3161_timestamp_for_id($id) == 1) { return 1; }
}
else { return 1; }
}
return 0;
}
public function get_raw_message($id = '') {
$s = '';
if($id == '' || !preg_match("/^([0-9a-f]+)$/", $id)) { return $s; }
if(LOG_LEVEL >= DEBUG) { syslog(LOG_INFO, DECRYPT_BINARY . " $id"); }
$handle = popen(DECRYPT_BINARY . " $id", "r");
while(($buf = fread($handle, DECRYPT_BUFFER_LENGTH))) {
$s .= $buf;
}
pclose($handle);
if($s == '') {
$handle = popen(DECRYPT_BINARY . " $id nocrypt", "r");
while(($buf = fread($handle, DECRYPT_BUFFER_LENGTH))) {
$s .= $buf;
}
pclose($handle);
}
if(ENABLE_ON_THE_FLY_VERIFICATION == 0) {
$this->verification = $this->verify_message($id, $s);
}
if(Registry::get('auditor_user') == 0 && HEADER_LINE_TO_HIDE) {
$s = preg_replace("/" . HEADER_LINE_TO_HIDE . ".{1,}(\n(\ |\t){1,}.{1,}){0,}" . "\n/i", "", $s);
}
if(Registry::get('auditor_user') == 0){
$s = preg_replace("/X-Piler-Envelope-To:.{1,}\n/", "", $s);
}
return $s;
}
public function get_attachment($piler_id = '', $attachment_id = '') {
$data = '';
if($piler_id == '' || $attachment_id == '' || !preg_match("/^([0-9a-f]+)$/", $piler_id) || !preg_match("/^([0-9m]+)$/", $attachment_id)) { return $data; }
if(LOG_LEVEL >= DEBUG) { syslog(LOG_INFO, DECRYPT_ATTACHMENT_BINARY . " $piler_id $attachment_id"); }
$handle = popen(DECRYPT_ATTACHMENT_BINARY . " $piler_id $attachment_id", "r");
while(($buf = fread($handle, DECRYPT_BUFFER_LENGTH))){
$data .= $buf;
}
pclose($handle);
/* check if it's a base64 encoded stuff */
$s = substr($data, 0, 4096);
$s = preg_replace("/(\r|\n)/", "", $s);
if(!preg_match("/\s/", $s)) {
return base64_decode(preg_replace("/\s/", "", $data));
}
return $data;
}
public function get_message_headers($id = '') {
$headers = '';
$msg = $this->get_raw_message($id);
Piler_Mime_Decode::splitMessageRaw($msg, $headers, $body);
$has_journal = $this->remove_journal($headers);
$headers = Piler_Mime_Decode::escape_lt_gt_symbols($headers);
return array('headers' => $headers, 'has_journal' => $has_journal);
}
public function get_message_journal($id = '') {
$data = '&lt; &gt;';
$boundary = '';
$msg = $this->get_raw_message($id);
$hdr = substr($msg, 0, 8192);
$s = preg_split("/\n/", $hdr);
while(list($k, $v) = each($s)) {
if(preg_match("/boundary\s{0,}=\s{0,}\"{0,}([\w\_\-\@\.]+)\"{0,}/i", $v, $m)) {
if(isset($m[1])) { $boundary = $m[1]; break; }
}
}
$p = strstr($msg, "\nX-MS-Journal-Report:");
$msg = '';
if($p) {
$s = preg_split("/\n/", $p);
$i=0; $j=0; $data = '';
while(list($k, $v) = each($s)) {
if(strstr($v, $boundary)) { $i++; }
if($i > 0 && preg_match("/^\s{1,}$/", $v)) { $j++; }
if($j == 1) {
$data .= "$v\n";
}
if($i >= 2) { break; }
}
$p = '';
$data = Piler_Mime_Decode::escape_lt_gt_symbols($data);
}
return $data;
}
public function remove_journal(&$msg = '') {
$p = $q = '';
$boundary = '';
$has_journal = 0;
$hdr = substr($msg, 0, 4096);
$s = preg_split("/\n/", $hdr);
while(list($k, $v) = each($s)) {
if(preg_match("/boundary\s{0,}=\s{0,}\"{0,}([\w\_\-\@\.]+)\"{0,}/i", $v, $m)) {
if(isset($m[1])) { $boundary = $m[1]; break; }
}
}
$p = strstr($msg, "\nX-MS-Journal-Report:");
if($p) {
$has_journal = 1;
$msg = '';
$q = strstr($p, "Received: from");
if($q) {
$p = '';
$msg = $q;
$q = '';
}
else {
$msg = $p;
$p = '';
}
if($boundary) {
$msg = substr($msg, 0, strlen($msg) - strlen($boundary) - 6);
}
}
return $has_journal;
}
public function extract_message($id = '', $terms = '') {
$from = "From: ";
$to = "To: ";
$cc = "Cc: ";
$subject = "Subject: ";
$date = "Date: ";
$msg = $this->get_raw_message($id);
$has_journal = $this->remove_journal($msg);
Piler_Mime_Decode::splitMessage($msg, $headers, $body);
for($i=0; $i<count(Piler_Mime_Decode::HEADER_FIELDS); $i++) {
if(isset($headers[Piler_Mime_Decode::HEADER_FIELDS[$i]]) && is_array($headers[Piler_Mime_Decode::HEADER_FIELDS[$i]])) {
$headers[Piler_Mime_Decode::HEADER_FIELDS[$i]] = $headers[Piler_Mime_Decode::HEADER_FIELDS[$i][0]];
}
if(Piler_Mime_Decode::HEADER_FIELDS[$i] == 'date') {
${Piler_Mime_Decode::HEADER_FIELDS[$i]} .= $headers[Piler_Mime_Decode::HEADER_FIELDS[$i]];
} else {
${Piler_Mime_Decode::HEADER_FIELDS[$i]} .= Piler_Mime_Decode::escape_lt_gt_symbols($headers[Piler_Mime_Decode::HEADER_FIELDS[$i]]);
}
}
Piler_Mime_Decode::parseMessage($msg, $parts);
require_once DIR_SYSTEM . 'helper/HTMLPurifier.standalone.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('URI.DisableExternal', 'true');
$config->set('URI.DisableExternalResources', 'true');
$config->set('Cache.SerializerPath', DIR_BASE . 'tmp');
$purifier = new HTMLPurifier($config);
$this->message = array(
'text/plain' => '',
'text/html' => ''
);
for($i=0; $i<count($parts); $i++) {
$body = Piler_Mime_Decode::fixMimeBodyPart($parts[$i]['headers'], $parts[$i]['body']);
if($parts[$i]['headers']['content-type']['type'] == 'text/html') {
$this->message['text/html'] = $purifier->purify($body);
}
else {
$this->message['text/plain'] = $body;
}
}
return array('from' => $from,
'to' => $to,
'cc' => $cc,
'subject' => $this->highlight_search_terms($subject, $terms),
'date' => $date,
'message' => $this->message['text/html'] ? $this->message['text/html'] : $this->message['text/plain'],
'has_journal' => $has_journal,
'verification' => $this->verification
);
}
private function highlight_search_terms($s = '', $terms = '', $html = 0) {
$fields = array("from:", "to:", "subject:", "body:");
$terms = preg_replace("/(\,|\s){1,}/", " ", $terms);
$a = explode(" ", $terms);
$terms = array();
while(list($k, $v) = each($a)) {
if(strlen($v) >= 3 && !in_array($v, $fields)) {
$v = preg_replace("/\*/", "", $v);
if($v) { array_push($terms, $v); }
}
}
if(count($terms) <= 0) { return $s; }
if($html == 0) {
while(list($k, $v) = each($terms)) {
$s = preg_replace("/$v/i", "<span class=\"message_highlight\">$v</span>", $s);
}
return $s;
}
$tokens = preg_split("/\</", $s);
$s = '';
while(list($k, $token) = each($tokens)) {
$pos = strpos($token, ">");
if($pos > 0) {
$len = strlen($token);
$s .= '<' . substr($token, 0, $pos) . '>';
if($len > $pos+1) {
$str = substr($token, $pos+1, $len);
reset($terms);
while(list($k, $v) = each($terms)) {
$str = preg_replace("/$v/i", "<span class=\"message_highlight\">$v</span>", $str);
}
$s .= $str;
}
}
}
return $s;
}
public function NiceSize($size) {
if($size < 1000) return "1k";
if($size < 100000) return round($size/1000) . "k";
return sprintf("%.1f", $size/1000000) . "M";
}
public function get_piler_id_by_id($id = 0) {
$query = $this->db->query("SELECT `piler_id` FROM `" . TABLE_META . "` WHERE id=?", array($id));
if(isset($query->row['piler_id'])) { return $query->row['piler_id']; }
return '';
}
public function get_id_by_piler_id($piler_id = '') {
if($piler_id == '') { return -1; }
$query = $this->db->query("SELECT `id` FROM `" . TABLE_META . "` WHERE piler_id=?", array($piler_id));
if(isset($query->row['id'])) { return $query->row['id']; }
return -1;
}
public function get_subject_id_by_id($id = 0) {
$query = $this->db->query("SELECT `subject` FROM `" . TABLE_META . "` WHERE id=?", array($id));
if(isset($query->row['subject'])) { return $query->row['subject']; }
return '';
}
public function get_metadata_by_id($id = 0) {
$query = $this->db->query("SELECT * FROM `" . TABLE_META . "` WHERE id=?", array($id));
if(isset($query->row['piler_id'])) { return $query->row; }
return '';
}
public function fix_subject($s = '') {
if($s == '') { $s = 'nosubject'; }
return preg_replace("/^\-{1,}/", "", preg_replace("/\W{1,}/", "-", $s));
}
public function get_attachment_by_id($id = 0) {
if($id <= 0) { return array(); }
$query = $this->db->query("SELECT id, piler_id, attachment_id, name, type, ptr FROM " . TABLE_ATTACHMENT . " WHERE id=?", array($id));
if(isset($query->row)) {
$metaid = $this->get_id_by_piler_id($query->row['piler_id']);
if($metaid > 0 && $this->model_search_search->check_your_permission_by_id($metaid) == 1) {
if($query->row['ptr'] > 0) {
$query = $this->db->query("SELECT id, piler_id, attachment_id, name, type FROM " . TABLE_ATTACHMENT . " WHERE id=?", array($query->row['ptr']));
}
$attachment = $this->get_attachment($query->row['piler_id'], $query->row['attachment_id']);
return array('filename' => fix_evolution_mime_name_crap($query->row['name']), 'piler_id' => $query->row['piler_id'], 'attachment' => $attachment);
}
}
return array();
}
public function check_rfc3161_timestamp_for_id($id = 0) {
$s = '';
$computed_hash = '';
/*
* determine which entry in the timestamp table holds the aggregated hash value,
* then compute the aggregated hash value for the digests between start_id and stop_id.
* If the hashes are the same, then verify by the public key as well
*/
$query = $this->db->query("SELECT `start_id`, `stop_id`, `hash_value`, `response_time`, `response_string` FROM " . TABLE_TIMESTAMP . " WHERE start_id <= ? AND stop_id >= ?", array($id, $id));
if(isset($query->row['start_id']) && isset($query->row['stop_id'])) {
if(MEMCACHED_ENABLED) {
$cache_key = "rfc3161_" . $query->row['start_id'] . "+" . $query->row['stop_id'];
$memcache = Registry::get('memcache');
$computed_hash = $memcache->get($cache_key);
}
if($computed_hash == '') {
$query2 = $this->db->query("SELECT digest FROM " . TABLE_META . " WHERE id >= ? AND id <= ?", array($query->row['start_id'], $query->row['stop_id']));
foreach($query2->rows as $q) {
$s .= $q['digest'];
}
$computed_hash = sha1($s);
if(MEMCACHED_ENABLED) {
$memcache->add($cache_key, $computed_hash, 0, MEMCACHED_TTL);
}
}
if($query->row['hash_value'] == $computed_hash) {
$validate = TrustedTimestamps::validate($query->row['hash_value'], $query->row['response_string'], $query->row['response_time'], TSA_PUBLIC_KEY_FILE);
if($validate == true) { return 1; }
}
}
return 0;
}
public function get_attachment_list($piler_id = 0) {
$data = array();
if($piler_id == '') { return array(); }
$query = $this->db->query("SELECT id, name, type, ptr FROM " . TABLE_ATTACHMENT . " WHERE piler_id=?", array($piler_id));
if(!isset($query->rows)) { return array(); }
foreach($query->rows as $q) {
$q['name'] = fix_evolution_mime_name_crap($q['name']);
array_push($data, $q);
}
return $data;
}
public function is_message_spam($id = 0) {
$spam = 0;
if($id > 0 && DEFAULT_RETENTION > 30) {
$query = $this->db->query("SELECT spam FROM " . TABLE_META . " WHERE id=?", array($id));
if(isset($query->row['spam'])) { $spam = $query->row['spam']; }
}
return $spam;
}
public function not_spam($id = 0) {
if($id > 0) {
$query = $this->db->query("UPDATE " . TABLE_META . " SET spam=0, retained=? WHERE id=?", array(NOW + (DEFAULT_RETENTION*86400), $id));
}
}
public function mark_as_private($id = 0) {
if($id > 0) {
$query = $this->db->query("INSERT INTO " . TABLE_PRIVATE . " (id) VALUES(?)", array($id));
}
return 1;
}
public function unmark_as_private($id = 0) {
if($id > 0) {
$query = $this->db->query("DELETE FROM " . TABLE_PRIVATE . " WHERE id=?", array($id));
}
return 1;
}
public function get_message_tag($id = '', $uid = 0) {
if($id == '' || $uid <= 0) { return ''; }
$query = $this->db->query("SELECT `tag` FROM " . TABLE_TAG . " WHERE uid=? AND id=?", array($uid, $id));
if(isset($query->row['tag'])) { return strip_tags($query->row['tag']); }
return '';
}
public function add_message_tag($id = '', $uid = 0, $tag = '') {
if($id == '' || $uid <= 0) { return 0; }
if($tag == '') {
$query = $this->db->query("DELETE FROM " . TABLE_TAG . " WHERE uid=? AND id=?", array($uid, $id));
} else {
$query = $this->db->query("UPDATE " . TABLE_TAG . " SET tag=? WHERE uid=? AND id=?", array($tag, $uid, $id));
if($this->db->countAffected() == 0) {
$query = $this->db->query("INSERT INTO " . TABLE_TAG . " (id, uid, tag) VALUES(?,?,?)", array($id, $uid, $tag));
}
}
return 1;
}
public function bulk_add_message_tag($ids = array(), $uid = 0, $tag = '', $q = '') {
$arr = array_merge(array($uid), $ids);
$query = $this->db->query("DELETE FROM " . TABLE_TAG . " WHERE uid=? AND id IN ($q)", $arr);
if($tag) {
foreach ($ids as $id) {
$query = $this->db->query("INSERT INTO " . TABLE_TAG . " (id, uid, tag) VALUES(?,?,?)", array($id, $uid, $tag));
}
}
}
public function get_message_note($id = '', $uid = 0) {
if($id == '' || $uid <= 0) { return ''; }
$query = $this->db->query("SELECT `note` FROM " . TABLE_NOTE . " WHERE uid=? AND id=?", array($uid, $id));
if(isset($query->row['note'])) { return strip_tags(urldecode($query->row['note'])); }
return '';
}
public function add_message_note($id = '', $uid = 0, $note = '') {
if($id == '' || $uid <= 0) { return 0; }
if($note == '') {
$query = $this->db->query("DELETE FROM " . TABLE_NOTE . " WHERE uid=? AND id=?", array($uid, $id));
} else {
$query = $this->db->query("UPDATE " . TABLE_NOTE . " SET note=? WHERE uid=? AND id=?", array($note, $uid, $id));
if($this->db->countAffected() == 0) {
$query = $this->db->query("INSERT INTO " . TABLE_NOTE . " (id, uid, note) VALUES(?,?,?)", array($id, $uid, $note));
}
}
return 1;
}
public function get_message_private($id = 0) {
if($id == 0) { return 0; }
$query = $this->db->query("SELECT `id` FROM " . TABLE_PRIVATE . " WHERE id=?", array($id));
if(isset($query->row['id'])) { return 1; }
return 0;
}
}
?>
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