// 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; }