1 files changed, 59 insertions, 0 deletions
diff --git a/library/Director/Data/RecursiveUtf8Validator.php b/library/Director/Data/RecursiveUtf8Validator.php
new file mode 100644
index 0000000..cadfc21
--- /dev/null
+++ b/library/Director/Data/RecursiveUtf8Validator.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Icinga\Module\Director\Data;
+
+use InvalidArgumentException;
+use ipl\Html\Error;
+
+class RecursiveUtf8Validator
+{
+    protected static $rowNum;
+
+    protected static $column;
+
+    /**
+     * @param array $rows Usually array of stdClass
+     * @return bool
+     */
+    public static function validateRows($rows)
+    {
+        foreach ($rows as self::$rowNum => $row) {
+            foreach ($row as self::$column => $value) {
+                static::assertUtf8($value);
+            }
+        }
+
+        return true;
+    }
+
+    protected static function assertUtf8($value)
+    {
+        if (\is_string($value)) {
+            static::assertUtf8String($value);
+        } elseif (\is_array($value) || $value instanceof \stdClass) {
+            foreach ((array) $value as $k => $v) {
+                static::assertUtf8($k);
+                static::assertUtf8($v);
+            }
+        } elseif ($value !== null && !\is_scalar($value)) {
+            throw new InvalidArgumentException("Cannot validate " . Error::getPhpTypeName($value));
+        }
+    }
+
+    protected static function assertUtf8String($string)
+    {
+        if (@\iconv('UTF-8', 'UTF-8', $string) != $string) {
+            $row = self::$rowNum;
+            if (is_int($row)) {
+                $row++;
+            }
+            throw new InvalidArgumentException(\sprintf(
+                'Invalid UTF-8 on row %s, column %s: "%s" (%s)',
+                $row,
+                self::$column,
+                \iconv('UTF-8', 'UTF-8//IGNORE', $string),
+                '0x' . \bin2hex($string)
+            ));
+        }
+    }
+}