1 // Copyright 2016 The PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <cstddef> 6 #include <cstdint> 7 #include <memory> 8 9 #include "core/fxcrt/cfx_readonlymemorystream.h" 10 #include "core/fxcrt/fx_safe_types.h" 11 #include "core/fxcrt/fx_system.h" 12 #include "core/fxcrt/xml/cfx_xmldocument.h" 13 #include "core/fxcrt/xml/cfx_xmlelement.h" 14 #include "core/fxcrt/xml/cfx_xmlparser.h" 15 #include "third_party/base/span.h" 16 LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)17extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { 18 FX_SAFE_SIZE_T safe_size = size; 19 if (!safe_size.IsValid()) 20 return 0; 21 22 auto stream = pdfium::MakeRetain<CFX_ReadOnlyMemoryStream>( 23 pdfium::make_span(data, size)); 24 CFX_XMLParser parser(stream); 25 std::unique_ptr<CFX_XMLDocument> doc = parser.Parse(); 26 if (!doc || !doc->GetRoot()) 27 return 0; 28 29 for (CFX_XMLNode* pXMLNode = doc->GetRoot()->GetFirstChild(); pXMLNode; 30 pXMLNode = pXMLNode->GetNextSibling()) { 31 if (pXMLNode->GetType() == CFX_XMLNode::Type::kElement) 32 break; 33 } 34 return 0; 35 } 36