Initial commit. Extracted from former pull request on Statify project

2016-08-14 13:23:27 +02:00
commit 4005f936cd
5 changed files with 365 additions and 0 deletions
--- a/inc/statifyblacklist.class.php
+++ b/inc/statifyblacklist.class.php
@ -0,0 +1,120 @@
+<?php
+
+/* Quit */
+defined('ABSPATH') OR exit;
+
+/**
+ * Statify Blacklist
+ *
+ * @since 1.0.0
+ */
+class StatifyBlacklist
+{
+  /**
+   * Plugin options
+   *
+   * @since   1.0.0
+   */
+  public static $_options;
+
+  public static $multisite;
+
+  /**
+   * Class self initialize
+   *
+   * @since   1.0.0
+   */
+  public static function instance()
+  {
+    new self();
+  }
+
+  /**
+   * Class constructor
+   *
+   * @since   1.0.0
+   */
+  public function __construct()
+  {
+    /* Skip on autosave or AJAX */
+    if ( (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) OR (defined('DOING_AJAX') && DOING_AJAX) ) {
+      return;
+    }
+
+    /* Plugin options */
+    self::update_options();
+
+    self::$multisite = (is_multisite() && array_key_exists(STATIFYBLACKLIST_BASE, (array)get_site_option('active_sitewide_plugins')));
+
+    /* Add Filter to statify hook */
+    add_filter('statify_skip_tracking', array('StatifyBlacklist', 'apply_blacklist_filter'));
+
+    /* Admin only filters */
+    if ( is_admin() ) {
+      add_action('wpmu_new_blog', array('StatifyBlacklist_Install', 'init_site'));
+
+      add_action('delete_blog', array('StatifyBlacklist_System', 'init_site'));
+
+      add_filter('plugin_row_meta', array('StatifyBlacklist_Admin', 'plugin_meta_link'), 10, 2);
+
+      if (is_multisite()) {
+        register_deactivation_hook(__FILE__, array('StatifyBlacklist_Admin', 'single_site_deactivate'));
+        add_action('network_admin_menu', array('StatifyBlacklist_Admin', '_add_menu_page'));
+        add_filter('network_admin_plugin_action_links', array('StatifyBlacklist_Admin', 'plugin_actions_links'), 10, 2);
+      } else {
+        add_action('admin_menu', array('StatifyBlacklist_Admin', '_add_menu_page'));
+        add_filter('plugin_action_links', array('StatifyBlacklist_Admin', 'plugin_actions_links'), 10, 2 );
+      }
+    }
+  }
+
+  /**
+   * Update options
+   *
+   * @since   1.0.0
+   */
+  public static function update_options($options = null) {
+    if (isset($options)) {
+      if ((is_multisite() && array_key_exists(STATIFYBLACKLIST_BASE, (array)get_site_option('active_sitewide_plugins'))))
+        update_site_option('statify-blacklist', $options);
+      else
+        update_option('statify-blacklist', $options);
+    }
+
+    self::$_options = wp_parse_args(
+      get_option('statify-blacklist'),
+      array(
+        'active_referer' => 0,
+        'referer'        => ''
+      )
+    );
+  }
+
+  /**
+   * Apply the blacklist filter if active
+   *
+   * @return  TRUE if referer matches blacklist.
+   *
+   * @since   1.0.0
+   */
+  public static function apply_blacklist_filter() {
+    /* Skip if blacklist is inactive */
+    if (self::$_options['active_referer'] != 1) {
+      return false;
+    }
+
+    /* Extract relevant domain parts */
+    $referer = strtolower( ( isset($_SERVER['HTTP_REFERER']) ? parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST) : '' ) );
+    $referer = explode('.', $referer);
+    if( count($referer) >1 )
+      $referer = implode('.', array_slice($referer, -2));
+    else
+      $referer = implode('.', $referer);
+
+    /* Get blacklist */
+    $blacklist = explode("\r\n", self::$_options['referer']);
+
+    /* Check blacklist */
+    return in_array($referer, $blacklist);
+  }
+}