function jsonlog_default_file in JSONlog 7

Establish default logging file path.

Directory default: PHP:ini error_log - unless that is 'syslog' (then checks the usual suspects /var/log/...) - plus /drupal-jsonlog.

Filename default: jsonlog site ID .log.json.

Return value

string Empty upon failure.

4 calls to jsonlog_default_file()

jsonlog_form_system_logging_settings_alter in ./jsonlog.module

Adds this module's setting fields to the system logging settings form.

jsonlog_form_system_logging_settings_submit in ./jsonlog.module

Custom submit handler for the system logging settings form.

jsonlog_test_filing in ./jsonlog.inc

Checks if log dir+file exists and is writable, and logs to watchdog.

jsonlog_watchdog in ./jsonlog.module

Logs any watchdog call - at or above a certain severity threshold - as JSON to a custom log file.

File

./jsonlog.inc, line 43

JSONlog module helper functions.

Code

function jsonlog_default_file() {
  if ($file = getenv('drupal_jsonlog_file')) {
    return $file;
  }

  // Default web server log dir for common *nix distributions.
  $default_log_dirs = array(
    'debian' => '/var/log/apache2',
    'redhat' => '/var/log/httpd',
  );
  $dir = '';
  if (!($server_log = ini_get('error_log')) || $server_log === 'syslog') {

    // Try default web server log dirs for common *nix distributions.
    foreach ($default_log_dirs as $val) {
      if (file_exists($val)) {
        $dir = $val;
        break;
      }
    }
  }
  else {
    $dir = str_replace('\\', '/', dirname($server_log));
  }
  if ($dir) {
    if (!($site_id = variable_get('jsonlog_siteid'))) {
      $site_id = jsonlog_default_site_id();
    }
    return $dir . '/drupal-jsonlog/' . $site_id . '.log.json';
  }
  return '';
}