Add fuzzing binary for lzxpress

Signed-off-by: Michael Hanselmann <public@hansmi.ch>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>

lib/fuzzing/fuzz_lzxpress.c

@@ -0,0 +1,35 @@
+/*
+   Fuzzing for lzxpress_decompress
+   Copyright (C) Michael Hanselmann 2019
+
+   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/>.
+*/
+
+#include "includes.h"
+#include "fuzzing/fuzzing.h"
+#include "lzxpress.h"
+
+int LLVMFuzzerInitialize(int *argc, char ***argv)
+{
+	return 0;
+}
+
+int LLVMFuzzerTestOneInput(uint8_t *buf, size_t len)
+{
+	static uint8_t output[1024 * 1024] = {0};
+
+	lzxpress_decompress(buf, len, output, sizeof(output));
+
+	return 0;
+}

lib/fuzzing/wscript_build

@@ -32,3 +32,10 @@ bld.SAMBA_BINARY('fuzz_regfio',
                  install=False,
                  enabled=bld.env.enable_libfuzzer,
                  )
+
+bld.SAMBA_BINARY('fuzz_lzxpress',
+                 source='fuzz_lzxpress.c',
+                 deps='fuzzing LZXPRESS',
+                 install=False,
+                 enabled=bld.env.enable_libfuzzer,
+                 )