1 files changed, 61 insertions, 0 deletions
diff --git a/library/Icinga/Web/Form/Validator/DateFormatValidator.php b/library/Icinga/Web/Form/Validator/DateFormatValidator.php
new file mode 100644
index 0000000..eacb29c
--- /dev/null
+++ b/library/Icinga/Web/Form/Validator/DateFormatValidator.php
@@ -0,0 +1,61 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Web\Form\Validator;
+
+use Zend_Validate_Abstract;
+
+/**
+ * Validator that checks if a textfield contains a correct date format
+ */
+class DateFormatValidator extends Zend_Validate_Abstract
+{
+
+    /**
+     * Valid date characters according to @see http://www.php.net/manual/en/function.date.php
+     *
+     * @var array
+     *
+     * @see http://www.php.net/manual/en/function.date.php
+     */
+    private $validChars =
+        array('d', 'D', 'j', 'l', 'N', 'S', 'w', 'z', 'W', 'F', 'm', 'M', 'n', 't', 'L', 'o', 'Y', 'y');
+
+    /**
+     * List of sensible time separators
+     *
+     * @var array
+     */
+    private $validSeparators = array(' ', ':', '-', '/', ';', ',', '.');
+
+    /**
+     * Error templates
+     *
+     * @var array
+     *
+     * @see Zend_Validate_Abstract::$_messageTemplates
+     */
+    protected $_messageTemplates = array(
+        'INVALID_CHARACTERS' => 'Invalid date format'
+    );
+
+    /**
+     * Validate the input value
+     *
+     * @param   string  $value      The format string to validate
+     * @param   null    $context    The form context (ignored)
+     *
+     * @return  bool True when the input is valid, otherwise false
+     *
+     * @see     Zend_Validate_Abstract::isValid()
+     */
+    public function isValid($value, $context = null)
+    {
+        $rest = trim($value, join(' ', array_merge($this->validChars, $this->validSeparators)));
+        if (strlen($rest) > 0) {
+            $this->_error('INVALID_CHARACTERS');
+            return false;
+        }
+        return true;
+    }
+}