check if return_to matches realm

Signed-off-by: Michael Krelin <hacker@klever.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/opkele/exception.h b/include/opkele/exception.h
index 5c8418e..33f89cc 100644
--- a/include/opkele/exception.h
+++ b/include/opkele/exception.h
@@ -357,6 +357,15 @@ namespace opkele {
                 : exception(OPKELE_E_CONS) { }
     };
 
+    /**
+     * thrown if return_to URL doesn't match realm
+     */
+    class bad_return_to : public exception {
+        public:
+            bad_return_to(OPKELE_E_PARS)
+                : exception(OPKELE_E_CONS) { }
+    };
+
 }
 
 #endif /* __OPKELE_EXCEPTION_H */