function simplenews_statistics_open_page in Simplenews Statistics 7

Same name and namespace in other branches

1. 7.2 includes/simplenews_statistics.pages.inc \simplenews_statistics_open_page()

Check and log newsletter opens.

1 call to simplenews_statistics_open_page()

simplenews_statistics_click_page in includes/simplenews_statistics.pages.inc

Check and log newsletter URL clicks.

1 string reference to 'simplenews_statistics_open_page'

simplenews_statistics_menu in ./simplenews_statistics.module

Implements hook_menu().

File

includes/simplenews_statistics.pages.inc, line 11

Contains page function for simplenews statistics.

Code

function simplenews_statistics_open_page($nid, $snid, $terminate = TRUE) {

  // Call possible decoders for nid & snid in modules implementing the hook.
  // Modules implementing this hook should validate this input themself because
  // we can not know what kind of string they will generate.
  $hook = 'simplenews_statistics_decode';
  foreach (module_implements($hook) as $module) {
    $function = $module . '_' . $hook;
    if (function_exists($function)) {
      $nid = $function($nid, 'nid');
      $snid = $function($snid, 'snid');
    }
  }

  // Once decoded properly we can know for sure that nid & snid are numeric.
  if (!is_numeric($nid) || !is_numeric($snid)) {
    watchdog('simplenews_statistics', 'Simplenews statistics open called with illegal parameter(s). Node ID: @nid. Subscriber ID: @snid', array(
      '@nid' => $nid,
      '@snid' => $snid,
    ));
  }
  else {
    $subscriber = simplenews_subscriber_load($snid);
    if (!empty($subscriber) && $subscriber->snid == $snid) {
      $record = new stdClass();
      $record->snid = $subscriber->snid;
      $record->nid = $nid;
      $record->timestamp = time();
      drupal_write_record('simplenews_statistics_open', $record);
    }
  }
  if ($terminate == FALSE) {
    return;

    // Allow PHP execution to continue.
  }

  // Render a transparent image and stop PHP execution.
  $type = 'image/png; utf-8';
  $file = drupal_get_path('module', 'simplenews_statistics') . '/images/count.png';

  // Default headers are set by drupal_page_header(), just set content type.
  drupal_add_http_header('Content-Type', $type);
  drupal_add_http_header('Content-Length', filesize($file));
  readfile($file);
  drupal_exit();
}