function fail2ban_syslog in Fail2ban Firewall Integration 7

Same name and namespace in other branches

1. 6 fail2ban.module \fail2ban_syslog()
2. 7.2 fail2ban.module \fail2ban_syslog()

The function that does the actual work, writing a log message.

Parameters

$address: String - An IP address or net/mask.

1 call to fail2ban_syslog()

fail2ban_comment_admin_overview_submit in ./fail2ban.module

Form submit handler to mass-report and unpublish or delete comments.

File

./fail2ban.module, line 87

Code

function fail2ban_syslog($address) {
  if (empty($address) || !is_string($address)) {
    return;
  }

  // Check if the address is in the whitelist. If so, just return.
  if (fail2ban_whitelist($address)) {
    drupal_set_message(t('The address !address is !whitelisted and will not be submitted to the firewall', array(
      '!address' => $address,
      '!whitelisted' => l('whitelisted', 'admin/settings/fail2ban'),
    )));
    return;
  }

  // Load all settings.
  $settings = variable_get('fail2ban', fail2ban_defaults());

  // Turn on all the right log options.
  //
  $options = 0;
  foreach ($settings['logopt']['options'] as $option) {
    $options = $options | $option;
  }

  // Get the priority.
  //
  $priority = 0;
  foreach ($settings['logopt']['priority'] as $option) {
    $priority = $priority | $option;
  }

  // Get the log string and replace the placeholder.
  //
  $message = strtr($settings['logstring'], array(
    '!address' => $address,
  ));

  // Open the log stream.
  //
  if (openlog($settings['identifier'], $options, $settings['logopt']['facility']) == FALSE) {
    watchdog('fail2ban', 'Unable to connect to the syslog daemon', NULL, WATCHDOG_ERROR);
    drupal_set_message(t('Unable to connect to the syslog daemon'), 'error');
    return;
  }
  if (syslog($priority, $message) == FALSE) {
    watchdog('fail2ban', 'Cannot write message to the syslog daemon', NULL, WATCHDOG_ERROR);
    drupal_set_message(t('Cannot write message to the syslog daemon'), 'error');
  }
  else {
    drupal_set_message(t('The address !address has been submitted to the firewall', array(
      '!address' => $address,
    )));
  }
  if (closelog() == FALSE) {
    watchdog('fail2ban', 'Cannot close connection to the syslog daemon', NULL, WATCHDOG_ERROR);
  }
}