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// Copyright 2016 The PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <cstddef>
#include <cstdint>
#include <memory>
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/fx_system.h"
#include "third_party/base/ptr_util.h"
#include "xfa/fde/xml/fde_xml_imp.h"
#include "xfa/fxfa/parser/cxfa_xml_parser.h"
#include "xfa/fxfa/parser/cxfa_widetextread.h"
namespace {
CFDE_XMLNode* XFA_FDEExtension_GetDocumentNode(
CFDE_XMLDoc* pXMLDoc,
bool bVerifyWellFormness = false) {
if (!pXMLDoc) {
return nullptr;
}
CFDE_XMLNode* pXMLFakeRoot = pXMLDoc->GetRoot();
for (CFDE_XMLNode* pXMLNode =
pXMLFakeRoot->GetNodeItem(CFDE_XMLNode::FirstChild);
pXMLNode; pXMLNode = pXMLNode->GetNodeItem(CFDE_XMLNode::NextSibling)) {
if (pXMLNode->GetType() == FDE_XMLNODE_Element) {
if (bVerifyWellFormness) {
for (CFDE_XMLNode* pNextNode =
pXMLNode->GetNodeItem(CFDE_XMLNode::NextSibling);
pNextNode;
pNextNode = pNextNode->GetNodeItem(CFDE_XMLNode::NextSibling)) {
if (pNextNode->GetType() == FDE_XMLNODE_Element) {
return nullptr;
}
}
}
return pXMLNode;
}
}
return nullptr;
}
} // namespace
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FX_SAFE_STRSIZE safe_size = size;
if (!safe_size.IsValid())
return 0;
CFX_WideString input =
CFX_WideString::FromUTF8(CFX_ByteStringC(data, safe_size.ValueOrDie()));
std::unique_ptr<IFGAS_Stream, ReleaseDeleter<IFGAS_Stream>> stream(
new CXFA_WideTextRead(input));
if (!stream)
return 0;
std::unique_ptr<CFDE_XMLDoc> doc = pdfium::MakeUnique<CFDE_XMLDoc>();
std::unique_ptr<CFDE_XMLParser, ReleaseDeleter<CFDE_XMLParser>> parser(
new CXFA_XMLParser(doc->GetRoot(), stream.get()));
if (!doc->LoadXML(parser.release()))
return 0;
int32_t load_result = doc->DoLoad(nullptr);
if (load_result < 100)
return 0;
(void)XFA_FDEExtension_GetDocumentNode(doc.get());
return 0;
}
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