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// Copyright 2014 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.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "public/fpdf_ext.h"
#include <memory>
#include "core/fpdfapi/cpdf_modulemgr.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfdoc/cpdf_annot.h"
#include "core/fpdfdoc/cpdf_interform.h"
#include "core/fpdfdoc/cpdf_metadata.h"
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/xml/cxml_content.h"
#include "core/fxcrt/xml/cxml_element.h"
#include "fpdfsdk/fsdk_define.h"
#include "third_party/base/ptr_util.h"
#ifdef PDF_ENABLE_XFA
#include "fpdfsdk/fpdfxfa/cpdfxfa_context.h"
#endif // PDF_ENABLE_XFA
bool FPDF_UnSupportError(int nError) {
CFSDK_UnsupportInfo_Adapter* pAdapter =
CPDF_ModuleMgr::Get()->GetUnsupportInfoAdapter();
if (!pAdapter)
return false;
UNSUPPORT_INFO* info = static_cast<UNSUPPORT_INFO*>(pAdapter->GetUnspInfo());
if (info && info->FSDK_UnSupport_Handler)
info->FSDK_UnSupport_Handler(info, nError);
return true;
}
DLLEXPORT FPDF_BOOL STDCALL
FSDK_SetUnSpObjProcessHandler(UNSUPPORT_INFO* unsp_info) {
if (!unsp_info || unsp_info->version != 1)
return false;
CPDF_ModuleMgr::Get()->SetUnsupportInfoAdapter(
pdfium::MakeUnique<CFSDK_UnsupportInfo_Adapter>(unsp_info));
return true;
}
void CheckUnSupportAnnot(CPDF_Document* pDoc, const CPDF_Annot* pPDFAnnot) {
CPDF_Annot::Subtype nAnnotSubtype = pPDFAnnot->GetSubtype();
if (nAnnotSubtype == CPDF_Annot::Subtype::THREED) {
FPDF_UnSupportError(FPDF_UNSP_ANNOT_3DANNOT);
} else if (nAnnotSubtype == CPDF_Annot::Subtype::SCREEN) {
const CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
CFX_ByteString cbString;
if (pAnnotDict->KeyExist("IT"))
cbString = pAnnotDict->GetStringFor("IT");
if (cbString.Compare("Img") != 0)
FPDF_UnSupportError(FPDF_UNSP_ANNOT_SCREEN_MEDIA);
} else if (nAnnotSubtype == CPDF_Annot::Subtype::MOVIE) {
FPDF_UnSupportError(FPDF_UNSP_ANNOT_MOVIE);
} else if (nAnnotSubtype == CPDF_Annot::Subtype::SOUND) {
FPDF_UnSupportError(FPDF_UNSP_ANNOT_SOUND);
} else if (nAnnotSubtype == CPDF_Annot::Subtype::RICHMEDIA) {
FPDF_UnSupportError(FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA);
} else if (nAnnotSubtype == CPDF_Annot::Subtype::FILEATTACHMENT) {
FPDF_UnSupportError(FPDF_UNSP_ANNOT_ATTACHMENT);
} else if (nAnnotSubtype == CPDF_Annot::Subtype::WIDGET) {
const CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
CFX_ByteString cbString;
if (pAnnotDict->KeyExist("FT"))
cbString = pAnnotDict->GetStringFor("FT");
if (cbString.Compare("Sig") == 0)
FPDF_UnSupportError(FPDF_UNSP_ANNOT_SIG);
}
}
bool CheckSharedForm(const CXML_Element* pElement, CFX_ByteString cbName) {
int count = pElement->CountAttrs();
int i = 0;
for (i = 0; i < count; i++) {
CFX_ByteString space;
CFX_ByteString name;
CFX_WideString value;
pElement->GetAttrByIndex(i, &space, &name, &value);
if (space == "xmlns" && name == "adhocwf" &&
value == L"http://ns.adobe.com/AcrobatAdhocWorkflow/1.0/") {
CXML_Element* pVersion =
pElement->GetElement("adhocwf", cbName.AsStringC(), 0);
if (!pVersion)
continue;
CXML_Content* pContent = ToContent(pVersion->GetChild(0));
if (!pContent)
continue;
switch (pContent->m_Content.GetInteger()) {
case 1:
FPDF_UnSupportError(FPDF_UNSP_DOC_SHAREDFORM_ACROBAT);
break;
case 2:
FPDF_UnSupportError(FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM);
break;
case 0:
FPDF_UnSupportError(FPDF_UNSP_DOC_SHAREDFORM_EMAIL);
break;
}
}
}
uint32_t nCount = pElement->CountChildren();
for (i = 0; i < (int)nCount; i++) {
CXML_Element* pChild = ToElement(pElement->GetChild(i));
if (pChild && CheckSharedForm(pChild, cbName))
return true;
}
return false;
}
void CheckUnSupportError(CPDF_Document* pDoc, uint32_t err_code) {
// Security
if (err_code == FPDF_ERR_SECURITY) {
FPDF_UnSupportError(FPDF_UNSP_DOC_SECURITY);
return;
}
if (!pDoc)
return;
// Portfolios and Packages
CPDF_Dictionary* pRootDict = pDoc->GetRoot();
if (pRootDict) {
CFX_ByteString cbString;
if (pRootDict->KeyExist("Collection")) {
FPDF_UnSupportError(FPDF_UNSP_DOC_PORTABLECOLLECTION);
return;
}
if (pRootDict->KeyExist("Names")) {
CPDF_Dictionary* pNameDict = pRootDict->GetDictFor("Names");
if (pNameDict && pNameDict->KeyExist("EmbeddedFiles")) {
FPDF_UnSupportError(FPDF_UNSP_DOC_ATTACHMENT);
return;
}
if (pNameDict && pNameDict->KeyExist("JavaScript")) {
CPDF_Dictionary* pJSDict = pNameDict->GetDictFor("JavaScript");
CPDF_Array* pArray = pJSDict ? pJSDict->GetArrayFor("Names") : nullptr;
if (pArray) {
for (size_t i = 0; i < pArray->GetCount(); i++) {
CFX_ByteString cbStr = pArray->GetStringAt(i);
if (cbStr.Compare("com.adobe.acrobat.SharedReview.Register") == 0) {
FPDF_UnSupportError(FPDF_UNSP_DOC_SHAREDREVIEW);
return;
}
}
}
}
}
}
// SharedForm
CPDF_Metadata metaData(pDoc);
const CXML_Element* pElement = metaData.GetRoot();
if (pElement)
CheckSharedForm(pElement, "workflowType");
#ifndef PDF_ENABLE_XFA
// XFA Forms
CPDF_InterForm interform(pDoc);
if (interform.HasXFAForm())
FPDF_UnSupportError(FPDF_UNSP_DOC_XFAFORM);
#endif // PDF_ENABLE_XFA
}
DLLEXPORT int STDCALL FPDFDoc_GetPageMode(FPDF_DOCUMENT document) {
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
if (!pDoc)
return PAGEMODE_UNKNOWN;
CPDF_Dictionary* pRoot = pDoc->GetRoot();
if (!pRoot)
return PAGEMODE_UNKNOWN;
CPDF_Object* pName = pRoot->GetObjectFor("PageMode");
if (!pName)
return PAGEMODE_USENONE;
CFX_ByteString strPageMode = pName->GetString();
if (strPageMode.IsEmpty() || strPageMode.EqualNoCase("UseNone"))
return PAGEMODE_USENONE;
if (strPageMode.EqualNoCase("UseOutlines"))
return PAGEMODE_USEOUTLINES;
if (strPageMode.EqualNoCase("UseThumbs"))
return PAGEMODE_USETHUMBS;
if (strPageMode.EqualNoCase("FullScreen"))
return PAGEMODE_FULLSCREEN;
if (strPageMode.EqualNoCase("UseOC"))
return PAGEMODE_USEOC;
if (strPageMode.EqualNoCase("UseAttachments"))
return PAGEMODE_USEATTACHMENTS;
return PAGEMODE_UNKNOWN;
}
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