From 164b12b5583f96d4bd630147c9f821cbc0843134 Mon Sep 17 00:00:00 2001
From: bel <bel2125@gmail.com>
Date: Fri, 2 Oct 2015 20:48:00 +0200
Subject: [PATCH] Add server side Javascript (Duktape) to feature check API

---
 include/civetweb.h |  2 ++
 src/civetweb.c     | 14 ++++++++++----
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/civetweb.h b/include/civetweb.h
index 24da6f07..c680a924 100644
--- a/include/civetweb.h
+++ b/include/civetweb.h
@@ -765,6 +765,8 @@ CIVETWEB_API int mg_get_response(struct mg_connection *conn,
          8  support IPv6 (USE_IPV6 set)
         16  support WebSocket (USE_WEBSOCKET set)
         32  support Lua scripts and Lua server pages (USE_LUA is set)
+        64  support server side JavaScript (USE_DUKTAPE is set)
+        The result is undefined for all other feature values.
 
    Return:
      If feature is available > 0
diff --git a/src/civetweb.c b/src/civetweb.c
index 07fdd17d..1e5cafa5 100755
--- a/src/civetweb.c
+++ b/src/civetweb.c
@@ -11603,7 +11603,9 @@ struct mg_context *mg_start(const struct mg_callbacks *callbacks,
 unsigned mg_check_feature(unsigned feature)
 {
 	static const unsigned feature_set = 0
-/* Set bits for available features according to API documentation. */
+/* Set bits for available features according to API documentation.
+ * This bit mask is created at compile time, according to the active
+ * preprocessor defines. It is a single const value at runtime. */
 #if !defined(NO_FILES)
 	                                    | 1
 #endif
@@ -11622,11 +11624,12 @@ unsigned mg_check_feature(unsigned feature)
 #if defined(USE_LUA)
 	                                    | 32
 #endif
-/* Set some extra bits not defined in the API documentation.
- * These bits may change without further notice. */
-#if !defined(NO_POPEN)
+#if defined(USE_DUKTAPE)
 	                                    | 64
 #endif
+
+/* Set some extra bits not defined in the API documentation.
+ * These bits may change without further notice. */
 #if defined(MG_LEGACY_INTERFACE)
 	                                    | 128
 #endif
@@ -11638,6 +11641,9 @@ unsigned mg_check_feature(unsigned feature)
 #endif
 #if !defined(NO_NONCE_CHECK)
 	                                    | 1024
+#endif
+#if !defined(NO_POPEN)
+	                                    | 2048
 #endif
 	    ;
 	return (feature & feature_set);