add docx fuzzer

Change-Id: Ib9a3d8a97fbb6281e8ac3ac2cf6c52cf6819304d
Reviewed-on: https://gerrit.libreoffice.org/45216
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

3 files changed, 83 insertions, 0 deletions

diff --git a/vcl/Executable_docxfuzzer.mk b/vcl/Executable_docxfuzzer.mk
new file mode 100644
index 000000000000..13478ffb2595
--- /dev/null
+++ b/vcl/Executable_docxfuzzer.mk
@@ -0,0 +1,49 @@
+# -*- 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 $(call gb_Executable_Executable,docxfuzzer))
+
+$(eval $(call gb_Executable_use_api,docxfuzzer,\
+    offapi \
+    udkapi \
+))
+
+$(eval $(call gb_Executable_use_externals,docxfuzzer,\
+    $(fuzzer_externals) \
+))
+
+$(eval $(call gb_Executable_set_include,docxfuzzer,\
+    $$(INCLUDE) \
+    -I$(SRCDIR)/vcl/inc \
+))
+
+$(eval $(call gb_Executable_use_libraries,docxfuzzer,\
+    $(fuzzer_writer_libraries) \
+    $(fuzzer_core_libraries) \
+))
+
+$(eval $(call gb_Executable_use_static_libraries,docxfuzzer,\
+    findsofficepath \
+    ulingu \
+    fuzzer_writer \
+    fuzzerstubs \
+))
+
+$(eval $(call gb_Executable_add_exception_objects,docxfuzzer,\
+    vcl/workben/docxfuzzer \
+))
+
+$(eval $(call gb_Executable_add_libs,docxfuzzer,\
+    -lFuzzingEngine \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/vcl/Module_vcl.mk b/vcl/Module_vcl.mk
index e27b4db56ab9..d184d1a9765e 100644
--- a/vcl/Module_vcl.mk
+++ b/vcl/Module_vcl.mk
@@ -156,6 +156,7 @@ $(eval $(call gb_Module_add_targets,vcl,\
     Executable_scrtffuzzer \
     Executable_wksfuzzer \
     Executable_diffuzzer \
+    Executable_docxfuzzer \
 ))
 endif
 
diff --git a/vcl/workben/docxfuzzer.cxx b/vcl/workben/docxfuzzer.cxx
new file mode 100644
index 000000000000..9d36b5add2fd
--- /dev/null
+++ b/vcl/workben/docxfuzzer.cxx
@@ -0,0 +1,33 @@
+/* -*- 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/FilterConfigItem.hxx>
+#include "commonfuzzer.hxx"
+
+extern "C" bool TestImportDOCX(SvStream &rStream);
+
+extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv)
+{
+    TypicalFuzzerInitialize(argc, argv);
+    return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+    SvMemoryStream aStream(const_cast<uint8_t*>(data), size, StreamMode::READ);
+    (void)TestImportDOCX(aStream);
+    //fontconfigs alloc mechanism is too complicated for lsan/valgrind so
+    //force the fontconfig options to be released now, they are demand loaded
+    //so will be recreated if necessary
+    SvpSalGraphics::getPlatformGlyphCache().ClearFontOptions();
+    return 0;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */