Added valid_password and valid_password_with methods in ValidationRules

src/Authentication/Passwords/ValidationRules.php

@@ -60,6 +60,72 @@ public function strong_password(string $value, string &$error1 = null, array $da
         return $result;
     }
 
+    /**
+     * A validation helper method to check if the passed
+     * current user's password is valid
+     *
+     * @param string $password
+     *
+     * @return bool
+     */
+    public function valid_password(string $password)
+    {
+        helper('auth');
+        $user = user();
+
+        if (empty($user)) {
+            return false;
+        }
+
+        $result = password_verify(base64_encode(
+            hash('sha384', $password, true)
+        ), $user->password_hash);
+
+        return $result;
+    }
+
+    /**
+     * A validation helper method to check if the passed
+     * current user's password is valid only when any of
+     * the other required fields are present in the data.
+     *
+     * Example (password is checked when the newPassword field is present):
+     *
+     *     required_with[newPassword]
+     *
+     * @param string $password
+     * @param string $fields
+     * @param array  $data
+     *
+     * @return bool
+     */
+    public function valid_password_with(string $password, string $fields, array $data)
+    {
+        $fields = explode(',', $fields);
+
+        foreach ($fields as $field)
+        {
+            if (array_key_exists($field, $data))
+            {
+                $requiredFields[] = $field;
+            }
+        }
+
+        // Remove any keys with empty values since, that means they
+        // weren't truly there, as far as this is concerned.
+        $requiredFields = array_filter($requiredFields, function ($item) use ($data) {
+            return ! empty($data[$item]);
+        });
+
+        if(empty($requiredFields))
+        {
+            return true;
+        }
+
+        return $this->valid_password($password);
+    }
+
+
     /**
      * Builds a new user instance from the global request.
      *

src/Language/en/Validation.php

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'valid_password'      => 'The {field} is not valid.',
+    'valid_password_with' => 'Valid {field} is needed in order to set {param}'
+];