Add generic LDAP client library

app/Core/Ldap/Query.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace Kanboard\Core\Ldap;
+
+/**
+ * LDAP Query
+ *
+ * @package ldap
+ * @author  Frederic Guillot
+ */
+class Query
+{
+    /**
+     * Query result
+     *
+     * @access private
+     * @var array
+     */
+    private $entries = array();
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  array  $entries
+     */
+    public function __construct(array $entries = array())
+    {
+        $this->entries = $entries;
+    }
+
+    /**
+     * Execute query
+     *
+     * @access public
+     * @param  resource  $ldap
+     * @param  string    $baseDn
+     * @param  string    $filter
+     * @param  array     $attributes
+     * @return Query
+     */
+    public function execute($ldap, $baseDn, $filter, array $attributes)
+    {
+        $sr = ldap_search($ldap, $baseDn, $filter, $attributes);
+        if ($sr === false) {
+            return $this;
+        }
+
+        $entries = ldap_get_entries($ldap, $sr);
+        if ($entries === false || count($entries) === 0 || $entries['count'] == 0) {
+            return $this;
+        }
+
+        $this->entries = $entries;
+
+        return $this;
+    }
+
+    /**
+     * Return true if the query returned a result
+     *
+     * @access public
+     * @return boolean
+     */
+    public function hasResult()
+    {
+        return ! empty($this->entries);
+    }
+
+    /**
+     * Return subset of entries
+     *
+     * @access public
+     * @param  string   $key
+     * @param  mixed    $default
+     * @return array
+     */
+    public function getAttribute($key, $default = null)
+    {
+        return isset($this->entries[0][$key]) ? $this->entries[0][$key] : $default;
+    }
+
+    /**
+     * Return one entry from a list of entries
+     *
+     * @access public
+     * @param  string   $key         Key
+     * @param  string   $default     Default value if key not set in entry
+     * @return string
+     */
+    public function getAttributeValue($key, $default = '')
+    {
+        return isset($this->entries[0][$key][0]) ? $this->entries[0][$key][0] : $default;
+    }
+}