add png fuzzer

Change-Id: I06a92aff55f4e107781b5e7b2b95eb61692a929b
Reviewed-on: https://gerrit.libreoffice.org/32849
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

3 files changed, 70 insertions, 0 deletions

diff --git a/vcl/Executable_pngfuzzer.mk b/vcl/Executable_pngfuzzer.mk
new file mode 100644
index 000000000000..8e6519c1db50
--- /dev/null
+++ b/vcl/Executable_pngfuzzer.mk
@@ -0,0 +1,47 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+include $(SRCDIR)/vcl/commonfuzzer.mk
+
+$(eval $(call gb_Executable_Executable,pngfuzzer))
+
+$(eval $(call gb_Executable_use_api,pngfuzzer,\
+    offapi \
+    udkapi \
+))
+
+$(eval $(call gb_Executable_use_externals,pngfuzzer,\
+	$(fuzzer_externals) \
+))
+
+$(eval $(call gb_Executable_set_include,pngfuzzer,\
+    $$(INCLUDE) \
+    -I$(SRCDIR)/vcl/inc \
+))
+
+$(eval $(call gb_Executable_use_libraries,pngfuzzer,\
+	$(fuzzer_libraries) \
+))
+
+$(eval $(call gb_Executable_use_static_libraries,pngfuzzer,\
+    findsofficepath \
+    ulingu \
+    fuzzer \
+))
+
+$(eval $(call gb_Executable_add_exception_objects,pngfuzzer,\
+	vcl/workben/pngfuzzer \
+))
+
+$(eval $(call gb_Executable_add_libs,pngfuzzer,\
+	-lFuzzingEngine \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/vcl/Module_vcl.mk b/vcl/Module_vcl.mk
index be0557de4dd4..f833ebbfc413 100644
--- a/vcl/Module_vcl.mk
+++ b/vcl/Module_vcl.mk
@@ -111,6 +111,7 @@ $(eval $(call gb_Module_add_targets,vcl,\
     Executable_giffuzzer \
     Executable_xbmfuzzer \
     Executable_xpmfuzzer \
+    Executable_pngfuzzer \
 ))
 endif
 
diff --git a/vcl/workben/pngfuzzer.cxx b/vcl/workben/pngfuzzer.cxx
new file mode 100644
index 000000000000..fbeb2acd7423
--- /dev/null
+++ b/vcl/workben/pngfuzzer.cxx
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <tools/stream.hxx>
+#include <vcl/pngread.hxx>
+#include "commonfuzzer.hxx"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    SvMemoryStream aStream(const_cast<uint8_t*>(data), size, StreamMode::READ);
+    vcl::PNGReader aReader(aStream);
+    (void)aReader.Read();
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */