<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;
function quarantine($_action, $_data = null) {
	global $pdo;
	global $redis;
	global $lang;
	$_data_log = $_data;
  switch ($_action) {
    case 'quick_delete':
      // Dont return results, just log
      $hash = trim($_data);
      if (preg_match("/^([a-f0-9]{64})$/", $hash) === false) {
        logger(array('return' => array(
          array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          )
        )));
        return false;
      }
      $stmt = $pdo->prepare('SELECT `id` FROM `quarantine` LEFT OUTER JOIN `user_acl` ON `user_acl`.`username` = `rcpt`
        WHERE SHA2(CONCAT(`id`, `qid`), 256) = :hash
          AND user_acl.quarantine = 1
          AND rcpt IN (SELECT username FROM mailbox)');
      $stmt->execute(array(':hash' => $hash));
      $row = $stmt->fetch(PDO::FETCH_ASSOC);
      if (empty($row['id']) || !is_numeric($row['id'])) {
        logger(array('return' => array(
          array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          )
        )));
        return false;
      }
      else {
        $stmt = $pdo->prepare("DELETE FROM `quarantine` WHERE id = :id");
        $stmt->execute(array(
          ':id' => $row['id']
        ));
      }
      logger(array('return' => array(
        array(
          'type' => 'success',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => array('item_deleted', $row['id'])
        )
      )));
    break;
    case 'quick_release':
      // Dont return results, just log
      $hash = trim($_data);
      if (preg_match("/^([a-f0-9]{64})$/", $hash) === false) {
        logger(array('return' => array(
          array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          )
        )));
        return false;
      }
      $stmt = $pdo->prepare('SELECT `id` FROM `quarantine` LEFT OUTER JOIN `user_acl` ON `user_acl`.`username` = `rcpt`
        WHERE SHA2(CONCAT(`id`, `qid`), 256) = :hash
          AND `user_acl`.`quarantine` = 1
          AND `username` IN (SELECT `username` FROM `mailbox`)');
      $stmt->execute(array(':hash' => $hash));
      $row = $stmt->fetch(PDO::FETCH_ASSOC);
      if (empty($row['id']) || !is_numeric($row['id'])) {
        logger(array('return' => array(
          array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          )
        )));
        return false;
      }
      else {
        $stmt = $pdo->prepare('SELECT `msg`, `qid`, `sender`, `rcpt` FROM `quarantine` WHERE `id` = :id');
        $stmt->execute(array(':id' => $row['id']));
        $detail_row = $stmt->fetch(PDO::FETCH_ASSOC);
        $sender = !empty($detail_row['sender']) ? $detail_row['sender'] : 'sender-unknown@rspamd';
        if (!empty(gethostbynamel('postfix-mailcow'))) {
          $postfix = 'postfix-mailcow';
        }
        if (!empty(gethostbynamel('postfix'))) {
          $postfix = 'postfix';
        }
        else {
          logger(array('return' => array(
            array(
              'type' => 'warning',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('release_send_failed', 'Cannot determine Postfix host')
            )
          )));
        return false;
        }
        try {
          $release_format = $redis->Get('Q_RELEASE_FORMAT');
        }
        catch (RedisException $e) {
          logger(array('return' => array(
            array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('redis_error', $e)
            )
          )));
          return false;
        }
        if ($release_format == 'attachment') {
          try {
            $mail = new PHPMailer(true);
            $mail->isSMTP();
            $mail->SMTPDebug = 0;
            $mail->SMTPOptions = array(
              'ssl' => array(
                  'verify_peer' => false,
                  'verify_peer_name' => false,
                  'allow_self_signed' => true
              )
            );
            if (!empty(gethostbynamel('postfix-mailcow'))) {
              $postfix = 'postfix-mailcow';
            }
            if (!empty(gethostbynamel('postfix'))) {
              $postfix = 'postfix';
            }
            else {
              logger(array('return' => array(
                array(
                  'type' => 'warning',
                  'log' => array(__FUNCTION__, $_action, $_data_log),
                  'msg' => array('release_send_failed', 'Cannot determine Postfix host')
                )
              )));
              return false;
            }
            $mail->Host = $postfix;
            $mail->Port = 590;
            $mail->setFrom($sender);
            $mail->CharSet = 'UTF-8';
            $mail->Subject = sprintf($lang['quarantine']['release_subject'], $detail_row['qid']);
            $mail->addAddress($detail_row['rcpt']);
            $mail->IsHTML(false);
            $msg_tmpf = tempnam("/tmp", $detail_row['qid']);
            file_put_contents($msg_tmpf, $detail_row['msg']);
            $mail->addAttachment($msg_tmpf, $detail_row['qid'] . '.eml');
            $mail->Body = sprintf($lang['quarantine']['release_body']);
            $mail->send();
            unlink($msg_tmpf);
          }
          catch (phpmailerException $e) {
            unlink($msg_tmpf);
            logger(array('return' => array(
              array(
                'type' => 'warning',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => array('release_send_failed', $e->errorMessage())
              )
            )));
            return false;
          }
        }
        elseif ($release_format == 'raw') {
          $detail_row['msg'] = preg_replace('/^X-Spam-Flag: (.*)/', 'X-Pre-Release-Spam-Flag $1', $detail_row['msg']);
          $postfix_talk = array(
            array('220', 'HELO quarantine' . chr(10)),
            array('250', 'MAIL FROM: ' . $sender . chr(10)),
            array('250', 'RCPT TO: ' . $detail_row['rcpt'] . chr(10)),
            array('250', 'DATA' . chr(10)),
            array('354', $detail_row['msg'] . chr(10) . '.' . chr(10)),
            array('250', 'QUIT' . chr(10)),
            array('221', '')
          );
          // Thanks to https://stackoverflow.com/questions/6632399/given-an-email-as-raw-text-how-can-i-send-it-using-php
          $smtp_connection = fsockopen($postfix, 590, $errno, $errstr, 1); 
          if (!$smtp_connection) {
            logger(array('return' => array(
              array(
                'type' => 'warning',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => 'Cannot connect to Postfix'
              )
            )));
            return false;
          }
          for ($i=0; $i < count($postfix_talk); $i++) {
            $smtp_resource = fgets($smtp_connection, 256); 
            if (substr($smtp_resource, 0, 3) !== $postfix_talk[$i][0]) {
              $ret = substr($smtp_resource, 0, 3);
              $ret = (empty($ret)) ? '-' : $ret;
              logger(array('return' => array(
                array(
                  'type' => 'warning',
                  'log' => array(__FUNCTION__, $_action, $_data_log),
                  'msg' => 'Postfix returned SMTP code ' . $smtp_resource . ', expected ' . $postfix_talk[$i][0]
                )
              )));
            return false;
            }
            if ($postfix_talk[$i][1] !== '')  {
              fputs($smtp_connection, $postfix_talk[$i][1]);
            }
          }
          fclose($smtp_connection);
        }
        $stmt = $pdo->prepare("DELETE FROM `quarantine` WHERE id = :id");
        $stmt->execute(array(
          ':id' => $row['id']
        ));
      }
    logger(array('return' => array(
      array(
        'type' => 'success',
        'log' => array(__FUNCTION__, $_action, $_data_log),
        'msg' => array('item_released', $hash)
      )
    )));
    break;
    case 'delete':
      if (!is_array($_data['id'])) {
        $ids = array();
        $ids[] = $_data['id'];
      }
      else {
        $ids = $_data['id'];
      }
      if (!isset($_SESSION['acl']['quarantine']) || $_SESSION['acl']['quarantine'] != "1" ) {
        $_SESSION['return'][] = array(
          'type' => 'danger',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => 'access_denied'
        );
        return false;
      }
      foreach ($ids as $id) {
        if (!is_numeric($id)) {
          $_SESSION['return'][] = array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          );
          continue;
        }
        $stmt = $pdo->prepare('SELECT `rcpt` FROM `quarantine` WHERE `id` = :id');
        $stmt->execute(array(':id' => $id));
        $row = $stmt->fetch(PDO::FETCH_ASSOC);
        if (!hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $row['rcpt']) && $_SESSION['mailcow_cc_role'] != 'admin') {
          $_SESSION['return'][] = array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          );
          continue;
        }
        else {
          $stmt = $pdo->prepare("DELETE FROM `quarantine` WHERE `id` = :id");
          $stmt->execute(array(
            ':id' => $id
          ));
        }
        $_SESSION['return'][] = array(
          'type' => 'success',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => array('item_deleted', $id)
        );
      }
    break;
    case 'edit':
      if (!isset($_SESSION['acl']['quarantine']) || $_SESSION['acl']['quarantine'] != "1" ) {
        $_SESSION['return'][] = array(
          'type' => 'danger',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => 'access_denied'
        );
        return false;
      }
      // Edit settings
      if ($_data['action'] == 'settings') {
        if ($_SESSION['mailcow_cc_role'] != "admin") {
          $_SESSION['return'][] = array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          );
          return false;
        }
        $retention_size = $_data['retention_size'];
        if ($_data['release_format'] == 'attachment' || $_data['release_format'] == 'raw') {
          $release_format = $_data['release_format'];
        }
        else {
          $release_format = 'raw';
        }
        $max_size = $_data['max_size'];
        if ($_data['max_score'] == "") {
          $max_score = '';
        }
        else {
          $max_score = floatval($_data['max_score']);
        }
        $max_age = intval($_data['max_age']);
        $subject = $_data['subject'];
        if (!filter_var($_data['bcc'], FILTER_VALIDATE_EMAIL)) {
          $bcc = '';
        }
        else {
          $bcc = $_data['bcc'];
        }
        if (!filter_var($_data['redirect'], FILTER_VALIDATE_EMAIL)) {
          $redirect = '';
        }
        else {
          $redirect = $_data['redirect'];
        }
        if (!filter_var($_data['sender'], FILTER_VALIDATE_EMAIL)) {
          $sender = '';
        }
        else {
          $sender = $_data['sender'];
        }
        $html = $_data['html_tmpl'];
        if ($max_age <= 0) {
          $max_age = 365;
        }
        $exclude_domains = (array)$_data['exclude_domains'];
        try {
          $redis->Set('Q_RETENTION_SIZE', intval($retention_size));
          $redis->Set('Q_MAX_SIZE', intval($max_size));
          $redis->Set('Q_MAX_SCORE', $max_score);
          $redis->Set('Q_MAX_AGE', $max_age);
          $redis->Set('Q_EXCLUDE_DOMAINS', json_encode($exclude_domains));
          $redis->Set('Q_RELEASE_FORMAT', $release_format);
          $redis->Set('Q_SENDER', $sender);
          $redis->Set('Q_BCC', $bcc);
          $redis->Set('Q_REDIRECT', $redirect);
          $redis->Set('Q_SUBJ', $subject);
          $redis->Set('Q_HTML', $html);
        }
        catch (RedisException $e) {
          $_SESSION['return'][] = array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => array('redis_error', $e)
          );
          return false;
        }
        $_SESSION['return'][] = array(
          'type' => 'success',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => 'saved_settings'
        );
      }
      // Release item
      elseif ($_data['action'] == 'release' || $_data['action'] == 'learnham') {
        if (!is_array($_data['id'])) {
          $ids = array();
          $ids[] = $_data['id'];
        }
        else {
          $ids = $_data['id'];
        }
        foreach ($ids as $id) {
          if (!is_numeric($id)) {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => 'access_denied'
            );
            continue;
          }
          $stmt = $pdo->prepare('SELECT `msg`, `action`, `qid`, `sender`, `rcpt` FROM `quarantine` WHERE `id` = :id');
          $stmt->execute(array(':id' => $id));
          $row = $stmt->fetch(PDO::FETCH_ASSOC);
          if (!hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $row['rcpt']) && $_SESSION['mailcow_cc_role'] != 'admin' || empty($row['rcpt'])) {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => 'access_denied'
            );
            continue;
          }
          $sender = !empty($row['sender']) ? $row['sender'] : 'sender-unknown@rspamd';
          if (!empty(gethostbynamel('postfix-mailcow'))) {
            $postfix = 'postfix-mailcow';
          }
          if (!empty(gethostbynamel('postfix'))) {
            $postfix = 'postfix';
          }
          else {
            $_SESSION['return'][] = array(
              'type' => 'warning',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('release_send_failed', 'Cannot determine Postfix host')
            );
            continue;
          }
          try {
            $release_format = $redis->Get('Q_RELEASE_FORMAT');
          }
          catch (RedisException $e) {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('redis_error', $e)
            );
            return false;
          }
          if ($release_format == 'attachment') {
            try {
              $mail = new PHPMailer(true);
              $mail->isSMTP();
              $mail->SMTPDebug = 0;
              $mail->SMTPOptions = array(
                'ssl' => array(
                    'verify_peer' => false,
                    'verify_peer_name' => false,
                    'allow_self_signed' => true
                )
              );
              if (!empty(gethostbynamel('postfix-mailcow'))) {
                $postfix = 'postfix-mailcow';
              }
              if (!empty(gethostbynamel('postfix'))) {
                $postfix = 'postfix';
              }
              else {
                $_SESSION['return'][] = array(
                  'type' => 'warning',
                  'log' => array(__FUNCTION__, $_action, $_data_log),
                  'msg' => array('release_send_failed', 'Cannot determine Postfix host')
                );
                continue;
              }
              $mail->Host = $postfix;
              $mail->Port = 590;
              $mail->setFrom($sender);
              $mail->CharSet = 'UTF-8';
              $mail->Subject = sprintf($lang['quarantine']['release_subject'], $row['qid']);
              $mail->addAddress($row['rcpt']);
              $mail->IsHTML(false);
              $msg_tmpf = tempnam("/tmp", $row['qid']);
              file_put_contents($msg_tmpf, $row['msg']);
              $mail->addAttachment($msg_tmpf, $row['qid'] . '.eml');
              $mail->Body = sprintf($lang['quarantine']['release_body']);
              $mail->send();
              unlink($msg_tmpf);
            }
            catch (phpmailerException $e) {
              unlink($msg_tmpf);
              $_SESSION['return'][] = array(
                'type' => 'warning',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => array('release_send_failed', $e->errorMessage())
              );
              continue;
            }
          }
          elseif ($release_format == 'raw') {
            $row['msg'] = preg_replace('/^X-Spam-Flag: (.*)/', 'X-Pre-Release-Spam-Flag $1', $row['msg']);
            $postfix_talk = array(
              array('220', 'HELO quarantine' . chr(10)),
              array('250', 'MAIL FROM: ' . $sender . chr(10)),
              array('250', 'RCPT TO: ' . $row['rcpt'] . chr(10)),
              array('250', 'DATA' . chr(10)),
              array('354', str_replace("\n.", '', $row['msg']) . chr(10) . '.' . chr(10)),
              array('250', 'QUIT' . chr(10)),
              array('221', '')
            );
            // Thanks to https://stackoverflow.com/questions/6632399/given-an-email-as-raw-text-how-can-i-send-it-using-php
            $smtp_connection = fsockopen($postfix, 590, $errno, $errstr, 1); 
            if (!$smtp_connection) {
              $_SESSION['return'][] = array(
                'type' => 'warning',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => 'Cannot connect to Postfix'
              );
              return false;
            }
            for ($i=0; $i < count($postfix_talk); $i++) {
              $smtp_resource = fgets($smtp_connection, 256); 
              if (substr($smtp_resource, 0, 3) !== $postfix_talk[$i][0]) {
                $ret = substr($smtp_resource, 0, 3);
                $ret = (empty($ret)) ? '-' : $ret;
                $_SESSION['return'][] = array(
                  'type' => 'warning',
                  'log' => array(__FUNCTION__, $_action, $_data_log),
                  'msg' => 'Postfix returned SMTP code ' . $smtp_resource . ', expected ' . $postfix_talk[$i][0]
                );
                return false;
              }
              if ($postfix_talk[$i][1] !== '')  {
                fputs($smtp_connection, $postfix_talk[$i][1]);
              }
            }
            fclose($smtp_connection);
          }
          $stmt = $pdo->prepare("DELETE FROM `quarantine` WHERE `id` = :id");
          $stmt->execute(array(
            ':id' => $id
          ));
          $_SESSION['return'][] = array(
            'type' => 'success',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => array('item_released', $id)
          );
          // Item was released and deleted from quarantine, now learning ham
          $curl = curl_init();
          curl_setopt($curl, CURLOPT_UNIX_SOCKET_PATH, '/var/lib/rspamd/rspamd.sock');
          curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
          curl_setopt($curl, CURLOPT_POST, 1);
          curl_setopt($curl, CURLOPT_TIMEOUT, 30);
          curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/plain'));
          curl_setopt($curl, CURLOPT_URL,"http://rspamd/learnham");
          curl_setopt($curl, CURLOPT_POSTFIELDS, $row['msg']);
          $response = curl_exec($curl);
          if (!curl_errno($curl)) {
            $response = json_decode($response, true);
            if (isset($response['error'])) {
              if (stripos($response['error'], 'already learned') === false) {
                $_SESSION['return'][] = array(
                  'type' => 'danger',
                  'log' => array(__FUNCTION__, $_action, $_data_log),
                  'msg' => array('ham_learn_error', $response['error'])
                );
                continue;
              }
            }
            curl_close($curl);
            $curl = curl_init();
            curl_setopt($curl, CURLOPT_UNIX_SOCKET_PATH, '/var/lib/rspamd/rspamd.sock');
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_TIMEOUT, 30);
            curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/plain', 'Flag: 11'));
            curl_setopt($curl, CURLOPT_URL,"http://rspamd/fuzzydel");
            curl_setopt($curl, CURLOPT_POSTFIELDS, $row['msg']);
            // It is most likely not a spam hash, so we ignore any error/warning response
            // $response = curl_exec($curl);
            if (!curl_errno($curl)) {
              curl_close($curl);
              $curl = curl_init();
              curl_setopt($curl, CURLOPT_UNIX_SOCKET_PATH, '/var/lib/rspamd/rspamd.sock');
              curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
              curl_setopt($curl, CURLOPT_POST, 1);
              curl_setopt($curl, CURLOPT_TIMEOUT, 30);
              curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/plain', 'Flag: 13'));
              curl_setopt($curl, CURLOPT_URL,"http://rspamd/fuzzyadd");
              curl_setopt($curl, CURLOPT_POSTFIELDS, $row['msg']);
              $response = curl_exec($curl);
              curl_exec($curl);
              if (!curl_errno($curl)) {
                $response = json_decode($response, true);
                if (isset($response['error'])) {
                  if (stripos($response['error'], 'No content to generate fuzzy') === false) {
                    $_SESSION['return'][] = array(
                      'type' => 'warning',
                      'log' => array(__FUNCTION__, $_action, $_data_log),
                      'msg' => array('fuzzy_learn_error', $response['error'])
                    );
                  }
                }
              }
              curl_close($curl);
              $_SESSION['return'][] = array(
                'type' => 'success',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => array('learned_ham', $id)
              );
              continue;
            }
            else {
              curl_close($curl);
              $_SESSION['return'][] = array(
                'type' => 'danger',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => array('ham_learn_error', 'Curl: ' . curl_strerror(curl_errno($curl)))
              );
              continue;
            }
            curl_close($curl);
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('ham_learn_error', 'unknown')
            );
            continue;
          }
          else {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('ham_learn_error', 'Curl: ' . curl_strerror(curl_errno($curl)))
            );
            curl_close($curl);
            continue;
          }
          curl_close($curl);
          $_SESSION['return'][] = array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => array('ham_learn_error', 'unknown')
          );
          continue;
        }
      }
      elseif ($_data['action'] == 'learnspam') {
        if (!is_array($_data['id'])) {
          $ids = array();
          $ids[] = $_data['id'];
        }
        else {
          $ids = $_data['id'];
        }
        foreach ($ids as $id) {
          if (!is_numeric($id)) {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => 'access_denied'
            );
            continue;
          }
          $stmt = $pdo->prepare('SELECT `msg`, `rcpt`, `action` FROM `quarantine` WHERE `id` = :id');
          $stmt->execute(array(':id' => $id));
          $row = $stmt->fetch(PDO::FETCH_ASSOC);
          if (!hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $row['rcpt']) && $_SESSION['mailcow_cc_role'] != 'admin' || empty($row['rcpt'])) {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => 'access_denied'
            );
            continue;
          }
          $stmt = $pdo->prepare("DELETE FROM `quarantine` WHERE `id` = :id");
          $stmt->execute(array(
            ':id' => $id
          ));
          $curl = curl_init();
          curl_setopt($curl, CURLOPT_UNIX_SOCKET_PATH, '/var/lib/rspamd/rspamd.sock');
          curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
          curl_setopt($curl, CURLOPT_POST, 1);
          curl_setopt($curl, CURLOPT_TIMEOUT, 30);
          curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/plain'));
          curl_setopt($curl, CURLOPT_URL,"http://rspamd/learnspam");
          curl_setopt($curl, CURLOPT_POSTFIELDS, $row['msg']);
          $response = curl_exec($curl);
          if (!curl_errno($curl)) {
            $response = json_decode($response, true);
            if (isset($response['error'])) {
              if (stripos($response['error'], 'already learned') === false) {
                $_SESSION['return'][] = array(
                  'type' => 'danger',
                  'log' => array(__FUNCTION__, $_action, $_data_log),
                  'msg' => array('spam_learn_error', $response['error'])
                );
                continue;
              }
            }
            curl_close($curl);
            $curl = curl_init();
            curl_setopt($curl, CURLOPT_UNIX_SOCKET_PATH, '/var/lib/rspamd/rspamd.sock');
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_TIMEOUT, 30);
            curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/plain', 'Flag: 13'));
            curl_setopt($curl, CURLOPT_URL,"http://rspamd/fuzzydel");
            curl_setopt($curl, CURLOPT_POSTFIELDS, $row['msg']);
            // It is most likely not a spam hash, so we ignore any error/warning response
            // $response = curl_exec($curl);
            if (!curl_errno($curl)) {
              curl_close($curl);
              $curl = curl_init();
              curl_setopt($curl, CURLOPT_UNIX_SOCKET_PATH, '/var/lib/rspamd/rspamd.sock');
              curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
              curl_setopt($curl, CURLOPT_POST, 1);
              curl_setopt($curl, CURLOPT_TIMEOUT, 30);
              curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: text/plain', 'Flag: 11'));
              curl_setopt($curl, CURLOPT_URL,"http://rspamd/fuzzyadd");
              curl_setopt($curl, CURLOPT_POSTFIELDS, $row['msg']);
              $response = curl_exec($curl);
              curl_exec($curl);
              if (!curl_errno($curl)) {
                $response = json_decode($response, true);
                if (isset($response['error'])) {
                  if (stripos($response['error'], 'No content to generate fuzzy') === false) {
                    $_SESSION['return'][] = array(
                      'type' => 'warning',
                      'log' => array(__FUNCTION__, $_action, $_data_log),
                      'msg' => array('fuzzy_learn_error', $response['error'])
                    );
                  }
                }
              }
              curl_close($curl);
              $_SESSION['return'][] = array(
                'type' => 'success',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => array('qlearn_spam', $id)
              );
              continue;
            }
            else {
              curl_close($curl);
              $_SESSION['return'][] = array(
                'type' => 'danger',
                'log' => array(__FUNCTION__, $_action, $_data_log),
                'msg' => array('spam_learn_error', 'Curl: ' . curl_strerror(curl_errno($curl)))
              );
              continue;
            }
            curl_close($curl);
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('spam_learn_error', 'unknown')
            );
            continue;
          }
          else {
            $_SESSION['return'][] = array(
              'type' => 'danger',
              'log' => array(__FUNCTION__, $_action, $_data_log),
              'msg' => array('spam_learn_error', 'Curl: ' . curl_strerror(curl_errno($curl)))
            );
            curl_close($curl);
            continue;
          }
          curl_close($curl);
          $_SESSION['return'][] = array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => array('spam_learn_error', 'unknown')
          );
          continue;
        }
      }
      return true;
    break;
    case 'get':
      if ($_SESSION['mailcow_cc_role'] == "user") {
        $stmt = $pdo->prepare('SELECT `id`, `qid`, `subject`, LOCATE("VIRUS_FOUND", `symbols`) AS `virus_flag`, `score`, `rcpt`, `sender`, `action`, UNIX_TIMESTAMP(`created`) AS `created`, `notified` FROM `quarantine` WHERE `rcpt` = :mbox');
        $stmt->execute(array(':mbox' => $_SESSION['mailcow_cc_username']));
        $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
        while($row = array_shift($rows)) {
          $q_meta[] = $row;
        }
      }
      elseif ($_SESSION['mailcow_cc_role'] == "admin") {
        $stmt = $pdo->query('SELECT `id`, `qid`, `subject`, LOCATE("VIRUS_FOUND", `symbols`) AS `virus_flag`, `score`, `rcpt`, `sender`, `action`, UNIX_TIMESTAMP(`created`) AS `created`, `notified` FROM `quarantine`');
        $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
        while($row = array_shift($rows)) {
          $q_meta[] = $row;
        }
      }
      else {
        $domains = array_merge(mailbox('get', 'domains'), mailbox('get', 'alias_domains'));
        foreach ($domains as $domain) {
          $stmt = $pdo->prepare('SELECT `id`, `qid`, `subject`, LOCATE("VIRUS_FOUND", `symbols`) AS `virus_flag`, `score`, `rcpt`, `sender`, `action`, UNIX_TIMESTAMP(`created`) AS `created`, `notified` FROM `quarantine` WHERE `rcpt` REGEXP :domain');
          $stmt->execute(array(':domain' => '@' . $domain . '$'));
          $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
          while($row = array_shift($rows)) {
            $q_meta[] = $row;
          }
        }
      }
      return $q_meta;
    break;
    case 'settings':
      try {
        if ($_SESSION['mailcow_cc_role'] == "admin") {
          $settings['exclude_domains'] = json_decode($redis->Get('Q_EXCLUDE_DOMAINS'), true);
        }
        $settings['max_size'] = $redis->Get('Q_MAX_SIZE');
        $settings['max_score'] = $redis->Get('Q_MAX_SCORE');
        $settings['max_age'] = $redis->Get('Q_MAX_AGE');
        $settings['retention_size'] = $redis->Get('Q_RETENTION_SIZE');
        $settings['release_format'] = $redis->Get('Q_RELEASE_FORMAT');
        $settings['subject'] = $redis->Get('Q_SUBJ');
        $settings['sender'] = $redis->Get('Q_SENDER');
        $settings['bcc'] = $redis->Get('Q_BCC');
        $settings['redirect'] = $redis->Get('Q_REDIRECT');
        $settings['html_tmpl'] = htmlspecialchars($redis->Get('Q_HTML'));
        if (empty($settings['html_tmpl'])) {
          $settings['html_tmpl'] = htmlspecialchars(file_get_contents("/tpls/quarantine.tpl"));
        }
      }
      catch (RedisException $e) {
        $_SESSION['return'][] = array(
          'type' => 'danger',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => array('redis_error', $e)
        );
        return false;
      }
      return $settings;
    break;
    case 'details':
      if (!is_numeric($_data) || empty($_data)) {
        return false;
      }
      $stmt = $pdo->prepare('SELECT * FROM `quarantine` WHERE `id`= :id');
      $stmt->execute(array(':id' => $_data));
      $row = $stmt->fetch(PDO::FETCH_ASSOC);
      if (hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $row['rcpt']) || $_SESSION['mailcow_cc_role'] == 'admin') {
        return $row;
      }
      logger(array('return' => array(
        array(
          'type' => 'danger',
          'log' => array(__FUNCTION__, $_action, $_data_log),
          'msg' => 'access_denied'
        )
      )));
      return false;
    break;
    case 'hash_details':
      $hash = trim($_data);
      if (preg_match("/^([a-f0-9]{64})$/", $hash) === false) {
        logger(array('return' => array(
          array(
            'type' => 'danger',
            'log' => array(__FUNCTION__, $_action, $_data_log),
            'msg' => 'access_denied'
          )
        )));
        return false;
      }
      $stmt = $pdo->prepare('SELECT * FROM `quarantine` WHERE SHA2(CONCAT(`id`, `qid`), 256) = :hash');
      $stmt->execute(array(':hash' => $hash));
      return $stmt->fetch(PDO::FETCH_ASSOC);
    break;
  }
}