Add upstream plugins

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

wp-content/plugins/all-in-one-event-calendar/lib/compatibility/xguard.php

@@ -0,0 +1,100 @@
+<?php
+
+/**
+ * Execution guard.
+ *
+ * Guards process execution for multiple runs at the same moment of time.
+ *
+ * @author     Time.ly Network, Inc.
+ * @since      2.0
+ * @package    Ai1EC
+ * @subpackage Ai1EC.Compatibility
+ */
+class Ai1ec_Compatibility_Xguard extends Ai1ec_Base {
+
+    /**
+     * Return time of last acquisition.
+     *
+     * If execution guard with that name was never acquired it returns 0 (zero).
+     * If acquisition fails it returns false.
+     *
+     * @param string $name    Name of guard to be acquired.
+     * @param int    $timeout Timeout, how long lock is held after acquisition.
+     *
+     * @return bool Success to acquire lock for given period.
+     */
+    public function acquire( $name, $timeout = 86400 ) {
+        $name  = $this->safe_name( $name );
+        $dbi   = $this->_registry->get( 'dbi.dbi' );
+        $entry = array(
+            'time' => time(),
+            'pid'  => getmypid(),
+        );
+        $table = $dbi->get_table_name( 'options' );
+        $dbi->query( 'START TRANSACTION' );
+        $query = $dbi->prepare(
+            'SELECT option_value FROM ' . $table .
+            ' WHERE option_name = %s',
+            $name
+        );
+        $prev = $dbi->get_var( $query );
+        if ( ! empty( $prev ) ) {
+            $prev = json_decode( $prev, true );
+        }
+        if (
+            ! empty( $prev ) &&
+            ( (int)$prev['time'] + (int)$timeout ) >= $entry['time']
+        ) {
+            $dbi->query( 'ROLLBACK' );
+            return false;
+        }
+        $query = '';
+        if ( empty( $prev ) ) {
+            $query = 'INSERT INTO';
+        } else {
+            $query = 'UPDATE';
+        }
+        $query .= ' `' . $table . '` SET `option_name` = %s, `option_value` = %s, `autoload` = 0';
+        if ( ! empty( $prev ) ) {
+            $query .= ' WHERE `option_name` = %s';
+        }
+        $query   = $dbi->prepare( $query, $name, json_encode( $entry ), $name );
+        $success = $dbi->query( $query );
+        if ( ! $success ) {
+            $dbi->query( 'ROLLBACK' );
+            return false;
+        }
+        $dbi->query( 'COMMIT' );
+        return true;
+    }
+
+    /**
+     * Method release logs execution guard release phase.
+     *
+     * @param string $name Name of acquisition.
+     *
+     * @return bool Not expected to fail.
+     */
+    public function release( $name ) {
+        return false !== $this->_registry->get( 'dbi.dbi' )->delete(
+            'options',
+            array( 'option_name' => $this->safe_name( $name ) ),
+            array( '%s' )
+        );
+    }
+
+    /**
+     * Prepare safe file names.
+     *
+     * @param string $name Name of acquisition
+     *
+     * @return string Actual safeguard name to use.
+     */
+    protected function safe_name( $name ) {
+        $name = preg_replace( '/[^A-Za-z_0-9\-]/', '_', $name );
+        $name = trim( preg_replace( '/_+/', '_', $name ), '_' );
+        $name = 'ai1ec_xlock_' . $name;
+        return substr( $name, 0, 50 );
+    }
+
+}