afl-persistent: cannibalize tcp_master

tests-fuzz/Makefile.am

@@ -10,7 +10,7 @@ noinst_PROGRAMS = \
 	packet \
 	knotd_stdio
 
-knotd_stdio_SOURCES = wrap/udp-handler.c wrap/server.c
+knotd_stdio_SOURCES = wrap/udp-handler.c wrap/server.c wrap/tcp-handler.c
 
 knotd_stdio_CPPFLAGS = $(AM_CPPFLAGS) $(liburcu_CFLAGS)
 knotd_stdio_LDADD = \

tests-fuzz/wrap/tcp-handler.c

+/*  Copyright (C) 2015 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define tcp_master _orig_tcp_master
+#include "knot/server/tcp-handler.c"
+#undef tcp_master
+
+int tcp_master(dthread_t *thread)
+{
+	log_info("AFL, tcp_master out of order");
+	return 0;
+}