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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 <limits>
#include <memory>
#include "core/include/fxcrt/fx_basic.h"
#include "core/include/fxcrt/fx_system.h"
#include "xfa/src/foxitlib.h"
#include "xfa/src/fxfa/src/common/xfa_common.h"
#include "xfa/src/fxfa/src/parser/xfa_parser_imp.h"
namespace {
IFDE_XMLNode* XFA_FDEExtension_GetDocumentNode(
IFDE_XMLDoc* pXMLDoc,
FX_BOOL bVerifyWellFormness = FALSE) {
if (!pXMLDoc) {
return nullptr;
}
IFDE_XMLNode* pXMLFakeRoot = pXMLDoc->GetRoot();
for (IFDE_XMLNode* pXMLNode =
pXMLFakeRoot->GetNodeItem(IFDE_XMLNode::FirstChild);
pXMLNode; pXMLNode = pXMLNode->GetNodeItem(IFDE_XMLNode::NextSibling)) {
if (pXMLNode->GetType() == FDE_XMLNODE_Element) {
if (bVerifyWellFormness) {
for (IFDE_XMLNode* pNextNode =
pXMLNode->GetNodeItem(IFDE_XMLNode::NextSibling);
pNextNode;
pNextNode = pNextNode->GetNodeItem(IFDE_XMLNode::NextSibling)) {
if (pNextNode->GetType() == FDE_XMLNODE_Element) {
return FALSE;
}
}
}
return pXMLNode;
}
}
return nullptr;
}
} // namespace
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size > std::numeric_limits<FX_STRSIZE>::max())
return 0;
CFX_WideString input = CFX_WideString::FromUTF8(
reinterpret_cast<const char*>(data), static_cast<FX_STRSIZE>(size));
std::unique_ptr<IFX_Stream, ReleaseDeleter<IFX_Stream>> stream(
XFA_CreateWideTextRead(input));
if (!stream)
return 0;
std::unique_ptr<IFDE_XMLDoc> doc(IFDE_XMLDoc::Create());
if (!doc)
return 0;
std::unique_ptr<IFDE_XMLParser, ReleaseDeleter<IFDE_XMLParser>> parser(
new CXFA_XMLParser(doc->GetRoot(), stream.get()));
if (!parser)
return 0;
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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