/* * (c) Copyright Ascensio System SIA 2010-2023 * * This program is a free software product. You can redistribute it and/or * modify it under the terms of the GNU Affero General Public License (AGPL) * version 3 as published by the Free Software Foundation. In accordance with * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect * that Ascensio System SIA expressly excludes the warranty of non-infringement * of any third-party rights. * * This program is distributed WITHOUT ANY WARRANTY; without even the implied * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html * * You can contact Ascensio System SIA at 20A-6 Ernesta Birznieka-Upish * street, Riga, Latvia, EU, LV-1050. * * The interactive user interfaces in modified source and object code versions * of the Program must display Appropriate Legal Notices, as required under * Section 5 of the GNU AGPL version 3. * * Pursuant to Section 7(b) of the License you must retain the original Product * logo when distributing the program. Pursuant to Section 7(e) we decline to * grant you any rights under trademark law for use of our trademarks. * * All the Product's GUI elements, including illustrations and icon sets, as * well as technical writing content are licensed under the terms of the * Creative Commons Attribution-ShareAlike 4.0 International. See the License * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode * */ #include "Metadata.h" #include "Streams.h" #include "Info.h" #include "Utils.h" #include "../../DesktopEditor/common/SystemUtils.h" #include "../../OOXML/Base/Base.h" void EscapeCharacters(std::string& s) { NSStringUtils::string_replaceA(s, "&", "&"); NSStringUtils::string_replaceA(s, "<", "<"); NSStringUtils::string_replaceA(s, ">", ">"); NSStringUtils::string_replaceA(s, "\"", """); NSStringUtils::string_replaceA(s, "\'", "'"); } namespace PdfWriter { //---------------------------------------------------------------------------------------- // Metadata //---------------------------------------------------------------------------------------- CMetadata::CMetadata(CXref* pXref, CInfoDict* pInfo) { pXref->Add(this); Add("Type", "Metadata"); Add("Subtype", "XML"); m_pStream = new CMemoryStream(); SetStream(pXref, m_pStream); std::string sXML; unsigned char strBOM[4] = { 0xEF, 0xBB, 0xBF, 0 }; std::string sBOM((char*)strBOM); // Begin sXML += ("\n\n\n"); sXML += "\n"; // Producer sXML += ""; sXML += pInfo->GetInfo(InfoProducer); sXML += "\n"; // Keywords const char* sKeywords = pInfo->GetInfo(InfoKeyWords); if (sKeywords) { std::string s = sKeywords; EscapeCharacters(s); sXML += ""; sXML += s; sXML += "\n"; } sXML += "\n"; // Creator Tool std::wstring sApplication = NSSystemUtils::GetEnvVariable(NSSystemUtils::gc_EnvApplicationName); if (sApplication.empty()) sApplication = NSSystemUtils::gc_EnvApplicationNameDefault; sXML += "\n"; sXML += ""; sXML += NSFile::CUtf8Converter::GetUtf8StringFromUnicode(sApplication); #if defined(INTVER) sXML += "/"; sXML += VALUE2STR(INTVER); #endif sXML += "\n"; TDate oDate = pInfo->GetDate(); sXML += ""; oDate.AppendToString(sXML); sXML += ""; sXML += ""; oDate.AppendToString(sXML); sXML += ""; sXML += "\n"; // DC const char* sTitle = pInfo->GetInfo(InfoTitle); const char* sAuthor = pInfo->GetInfo(InfoAuthor); const char* sSubject = pInfo->GetInfo(InfoSubject); if (sTitle || sAuthor || sSubject) { sXML += "\n"; sXML += "application/pdf"; if (sSubject) { std::string s = sSubject; EscapeCharacters(s); sXML += ""; sXML += s; sXML += "\n"; } if (sAuthor) { std::string s = sAuthor; EscapeCharacters(s); sXML += ""; sXML += s; sXML += "\n"; } if (sTitle) { std::string s = sTitle; EscapeCharacters(s); sXML += ""; sXML += s; sXML += "\n"; } sXML += "\n"; } if (pXref->IsPDFA()) { sXML += "\n"; sXML += "2A\n"; sXML += ""; } // End sXML += "\n"; m_pStream->WriteStr(sXML.c_str()); } //---------------------------------------------------------------------------------------- // StreamData //---------------------------------------------------------------------------------------- CStreamData::CStreamData(CXref* pXref) { pXref->Add(this); m_pStream = new CMemoryStream(); Add("Length", 1234567890); Add("Type", "MetaOForm"); SetStream(pXref, m_pStream); m_nLengthBegin = 0; m_nLengthEnd = 0; } void CStreamData::SetID(CBinaryObject* pID) { if (!pID) return; Add("ID", pID); } bool CStreamData::AddMetaData(const std::wstring& sMetaName, BYTE* pMetaData, DWORD nMetaLength) { if (sMetaName == L"Length") return false; CArrayObject* pArr = new CArrayObject(); if (!pArr) return false; std::string sKey = U_TO_UTF8(sMetaName); Add(sKey, pArr); int nCur = m_pStream->Tell(); pArr->Add(nCur); pArr->Add((int)nMetaLength); m_pStream->Write(pMetaData, nMetaLength); return true; } void CStreamData::WriteToStream(CStream* pStream, CEncrypt* pEncrypt) { for (auto const &oIter : m_mList) { CObjectBase* pObject = oIter.second; if (!pObject) continue; if (!pObject->IsHidden()) { int nBegin, nEnd; pStream->WriteEscapeName(oIter.first.c_str()); pStream->WriteChar(' '); nBegin = pStream->Tell(); pStream->Write(pObject, NULL); nEnd = pStream->Tell(); pStream->WriteStr("\012"); if (oIter.first == "Length") { m_nLengthBegin = nBegin; m_nLengthEnd = nEnd; } } } } void CStreamData::AfterWrite(CStream* pStream) { int nCurrent = pStream->Tell(); pStream->Seek(m_nLengthBegin, EWhenceMode::SeekSet); pStream->Write(Get("Length"), NULL); int nEnd = pStream->Tell(); if (nEnd < m_nLengthEnd) { unsigned int nLength = m_nLengthEnd - nEnd; BYTE* pDifference = new BYTE[nLength]; MemSet(pDifference, ' ', nLength); pStream->Write(pDifference, nLength); RELEASEARRAYOBJECTS(pDifference); } pStream->Seek(nCurrent, EWhenceMode::SeekSet); } }