Add upstream plugins

Signed-off-by: Adrian Nöthlich <git@promasu.tech>

wp-content/plugins/all-in-one-event-calendar/lib/captcha/providers.php

@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * Captcha providers handler class.
+ *
+ * @author     Time.ly Network Inc.
+ * @since      2.2
+ *
+ * @package    AI1EC
+ * @subpackage AI1EC.Captcha
+ */
+class Ai1ec_Captcha_Providers extends Ai1ec_Base {
+
+    /**
+     * List of available captcha providers.
+     *
+     * @var array
+     */
+    protected $_providers = null;
+
+    /**
+     * Returns list of available providers.
+     *
+     * @return array List of providers.
+     */
+    public function get_providers() {
+        if ( null !== $this->_providers ) {
+            return $this->_providers;
+        }
+        $built_in      = array(
+            'Ai1ec_Captcha_Recaptcha_Provider',
+            'Ai1ec_Captcha_Nocaptcha_Provider',
+        );
+        $all_providers = apply_filters( 'ai1ec_captcha_providers', $built_in );
+        if ( empty( $all_providers ) ) {
+            return array();
+        }
+        $providers = array();
+        foreach ( $all_providers as $provider_class ) {
+            $provider = new $provider_class( $this->_registry );
+            if ( ! $provider instanceof Ai1ec_Captcha_Provider ) {
+                continue;
+            }
+            $providers[] = $provider;
+        }
+
+        return $providers;
+    }
+
+    /**
+     * Returns providers settings.
+     *
+     * @return array Providers settings.
+     */
+    public function get_providers_as_settings() {
+        $all_providers = $this->get_providers();
+        $settings      = array();
+        foreach ( $all_providers as $provider ) {
+            $settings[] = array(
+                'text'     => $provider->get_name(),
+                'value'    => get_class( $provider ),
+                'settings' => $provider->get_settings(),
+            );
+        }
+
+        return $settings;
+    }
+}