Adds fuzz target

And configur option enable-fuzztargets

2 files changed, 41 insertions, 0 deletions

diff --git a/fuzz/Makefile.am b/fuzz/Makefile.am
new file mode 100644
index 000000000..4693d4076
--- /dev/null
+++ b/fuzz/Makefile.am
@@ -0,0 +1,13 @@
+bin_PROGRAMS = fuzz_process_packet
+
+fuzz_process_packet_SOURCES = fuzz_process_packet.c
+fuzz_process_packet_LDFLAGS = ../src/lib/libndpi.a
+if HAS_FUZZLDFLAGS
+    fuzz_process_packet_LDFLAGS += $(LIB_FUZZING_ENGINE)
+else
+    fuzz_process_packet_SOURCES += onefile.c
+endif
+# force usage of CXX for linker
+fuzz_process_packet_LINK=$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+    $(LIBTOOLFLAGS) --mode=link $(CXX) $(AM_CXXFLAGS) $(CXXFLAGS) \
+    $(fuzz_process_packet_LDFLAGS) $(LDFLAGS) -o $@
diff --git a/fuzz/fuzz_process_packet.c b/fuzz/fuzz_process_packet.c
new file mode 100644
index 000000000..88319b419
--- /dev/null
+++ b/fuzz/fuzz_process_packet.c
@@ -0,0 +1,28 @@
+#include "ndpi_api.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+struct ndpi_detection_module_struct *ndpi_info_mod = NULL;
+struct ndpi_flow_struct *ndpi_flow;
+struct ndpi_id_struct *src;
+struct ndpi_id_struct *dst;
+
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+    if (ndpi_info_mod == NULL) {
+        ndpi_info_mod = ndpi_init_detection_module();
+        NDPI_PROTOCOL_BITMASK all;
+        NDPI_BITMASK_SET_ALL(all);
+        ndpi_set_protocol_detection_bitmask2(ndpi_info_mod, &all);
+        ndpi_flow = ndpi_flow_malloc(SIZEOF_FLOW_STRUCT);
+        src = ndpi_malloc(SIZEOF_ID_STRUCT);
+        dst = ndpi_malloc(SIZEOF_ID_STRUCT);
+    }
+
+    memset(ndpi_flow, 0, SIZEOF_FLOW_STRUCT);
+    memset(src, 0, SIZEOF_ID_STRUCT);
+    memset(dst, 0, SIZEOF_ID_STRUCT);
+    ndpi_detection_process_packet(ndpi_info_mod, ndpi_flow, Data, Size, 0, src, dst);
+
+    return 0;
+}