[core] respond 411 Length Required if request has Transfer-Encoding: chunked (fixes #631)

lighttpd does not currently support request body transfer-codings

From: Glenn Strauss <gstrauss@gluelogic.com>

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@3128 152afb58-edef-0310-8abb-c4023f1b3aa9

NEWS

@@ -52,6 +52,7 @@ NEWS
   * [config] warn if server.upload-dirs has non-existent dirs (fixes #2508)
   * [mod_proxy] accept LF delimited headers, not just CRLF (fixes #2594)
   * [core] wait for grandchild to be ready when daemonizing (fixes #2712, thx pasdVn)
+  * [core] respond 411 Length Required if request has Transfer-Encoding: chunked (fixes #631)
 
 - 1.4.39 - 2016-01-02
   * [core] fix memset_s call (fixes #2698)

src/request.c

@@ -1133,7 +1133,15 @@ int http_request_parse(server *srv, connection *con) {
 		}
 		break;
 	default:
-		/* the may have a content-length */
+		/* require Content-Length if request contains request body */
+		if (array_get_element(con->request.headers, "Transfer-Encoding")) {
+			/* presence of Transfer-Encoding in request headers requires "chunked"
+			 * be final encoding in HTTP/1.1.  Return 411 Length Required as
+			 * lighttpd does not support request input transfer-encodings */
+			con->keep_alive = 0;
+			con->http_status = 411; /* 411 Length Required */
+			return 0;
+		}
 		break;
 	}