case insensitive properties, case sensitive property name lists

Author: simonLeary42

resources/lib/ObjectClass.php

@@ -6,8 +6,8 @@
 
 /**
  * Uses magic __get to return $this->entry->getAttribute($x) or $this->entry->getAttribute($x)[0]
- * $attributes_array is a case sensitive list of LDAP attribute names that should be an array
- * $attributes_non_array is a case sensitive list of LDAP attribute names that should be a single
+ * $attributes_array is a list of LDAP attribute names (lowercase only!) that should be an array
+ * $attributes_non_array is a list of LDAP attribute names (lowercase only!) that should be a single
  * value instead of an array
  * $entry is a PHPOpenLDAPer\LDAPEntry
  * @since 8.3.0
@@ -17,10 +17,29 @@ class ObjectClass
     private ?LDAPEntry $entry = null; // define in constructor of child class
     protected static array $attributes_array = [];
     protected static array $attributes_non_array = [];
+    private $validated = false;
+
+    private function ensureAttributeListsValidated()
+    {
+        if ($this->validated) {
+            return;
+        }
+        assert(
+            array_reduce(
+                array_merge(static::$attributes_array, static::$attributes_non_array),
+                fn($carry, $x) => $carry && is_string($x) && $x === strtolower($x),
+                true
+            ),
+            "attributes_array and attributes_non_array must be only lowercase strings"
+        );
+        $this->validated = true;
+    }
 
     public function __get(string $property): mixed
     {
         assert(!is_null($this->entry));
+        $this->ensureAttributeListsValidated();
+        $property = strtolower($property);
         if (in_array($property, static::$attributes_array, true)) {
             return $this->entry->getAttribute($property);
         }
@@ -36,7 +55,10 @@ public function __get(string $property): mixed
 
     public function __isset(string $property): bool
     {
+        $this->ensureAttributeListsValidated();
+        $property = strtolower($property);
         assert(!is_null($this->entry));
+        $this->assert_attribute_lists_are_lowercase();
         if (in_array($property, static::$attributes_array, true)
             || in_array($property, static::$attributes_non_array, true)
         ) {