ie_imp_StarOffice.h

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/* -*- mode: C++; tab-width: 4; c-basic-offset: 4; -*- */

/* Abiword
 * Copyright (C) 2001 Christian Biesinger <cbiesinger@web.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#ifndef IE_IMP_STAROFFICE_H
#define IE_IMP_STAROFFICE_H

#include <stdio.h>
#include <map>
#include <string>

#include "ut_types.h"
#include "ut_iconv.h"
#include "ie_imp.h"

#include "sdw_cryptor.h"

class PD_Document;

// The following struct definition was taken from the OpenOffice file
// sot/inc/stg.hxx line 85ff, with changes because of the different
// cross-platform toolkits. That file is available under the LGPL.
struct ClsId {
    UT_sint32 n1;
    UT_sint16 n2, n3;
    UT_uint8 n4, n5, n6, n7, n8, n9, n10, n11;
};

void readByteString(GsfInput* stream, char*& str, UT_uint16* aLength = NULL)
    noexcept(false);

void readByteString(GsfInput* stream, UT_UCS4Char*& str, UT_iconv_t converter, SDWCryptor* cryptor = NULL) noexcept(false);

class DocHdr {
    public:
        DocHdr() : sBlockName(NULL), converter(reinterpret_cast<UT_iconv_t>(-1)) {}
        ~DocHdr() { if (sBlockName) free(sBlockName); if (UT_iconv_isValid(converter)) UT_iconv_close(converter); }
        void load(GsfInput* stream) noexcept(false);

        UT_uint8 cLen; // ???
        UT_uint16 nVersion;
        UT_uint16 nFileFlags;
        UT_sint32 nDocFlags;
        UT_uint32 nRecSzPos;
        UT_sint32 nDummy;
        UT_uint16 nDummy16; // actually 2x dummy8
        UT_uint8 cRedlineMode; // should actually be an enum, see sw/inc/redlenum.hxx#L83
        UT_uint8 nCompatVer;

        UT_uint8 cPasswd[16]; // password verification data

        UT_uint8 cSet; // the encoding to use
        UT_uint8 cGui;

        UT_uint32 nDate;
        UT_uint32 nTime;

        UT_UCS4Char* sBlockName; // name of a text module

        UT_iconv_t converter; // Iconv handle for converting from the doc charset to UCS_2_INTERNAL

        SDWCryptor* cryptor; // used for decrypting the document or null if not encrypted
};

// A text attribute record
struct TextAttr {
    TextAttr() : data(NULL), isOff(false), isPara(false) {}
    ~TextAttr() { if (data) delete[] data; }
    bool startSet, endSet; // true if the start/end attribute is valid
    UT_uint16 which;
    UT_uint16 ver;
    UT_uint16 start;
    UT_uint16 end;

    UT_uint8* data; // possible additional data. NULL if no data existant.
    gsf_off_t dataLen;

    std::string attrName;
    std::string attrVal;
    bool isOff; // if true, attrVal is undefined
    bool isPara; // should be applied to paragraph, not span
};

// File Flags: (from sw/source/core/sw3io/sw3ids.hxx lines 65ff)
#define SWGF_BLOCKNAME  0x0002 // Header has textmodule
#define SWGF_HAS_PASSWD 0x0008 // Stream is password protected
#define SWGF_HAS_PGNUMS 0x0100 // Stream has pagenumbers
#define SWGF_BAD_FILE   0x8000 // There was an error writing the file

// Document Flags: (from sw/source/core/sw3io/sw3doc.cxx 733ff)
#define SWDF_BROWSEMODE1 0x1   // show document in browse mode?
#define SWDF_BROWSEMODE2 0x2   // same as above, one of them need to be set
#define SWDF_HTMLMODE 0x4      // document is in HTML Mode
#define SWDF_HEADINBROWSE 0x8  // Show headers in Browse Mode
#define SWDF_FOOTINBROWSE 0x10 // Show footers in browse mode
#define SWDF_GLOBALDOC 0x20    // Is a global document (a global document can contain chapter documents... I think)
#define SWDF_GLOBALDOCSAVELINK 0x40 // Include sections that are linked to the global document when saving
#define SWDF_LABELDOC 0x80     // is a label ("etiketten") document

// File versions (sw/source/core/sw3io/sw3ids.hxx 77ff)
#define SWG_POOLIDS 0x3        // IDs for Stringpool-Strings
#define SWG_LAYFRAMES 0x5      // Layout Frames
#define SWG_RECSIZES '%'       // Record Sizes
#define SWG_LONGIDX 0x201
#define SWG_LONGRECS 0x209     // Record-Length > 8/16MB
#define SWG_MAJORVERSION SWG_LONGIDX


// Document Sections
#define SWG_ATTRIBUTE 'A' // attribute of a textnode
#define SWG_COMMENT  'C' // comments
#define SWG_JOBSETUP 'J' // Printer Job Setup
#define SWG_CONTENTS 'N' // Textpart
#define SWG_ATTRSET  'S' // set of attributes
#define SWG_STRINGPOOL '!'
#define SWG_TEXTNODE 'T'
#define SWG_EOF      'Z'

// File format constants, from OpenOffice's tools/inc/solar.h line 471ff
#define SOFFICE_FILEFORMAT_31   3450
#define SOFFICE_FILEFORMAT_40   3580
#define SOFFICE_FILEFORMAT_50   5050
#define SOFFICE_FILEFORMAT_60   6200

// Print Job constants
#define JOBSET_FILE364_SYSTEM 0xFFFF
#define JOBSET_FILE605_SYSTEM 0xFFFE

#define IDX_NOCONV_FF 0xFFFC

// Staroffice document sniffer.
class IE_Imp_StarOffice_Sniffer : public IE_ImpSniffer
{
    public:
        IE_Imp_StarOffice_Sniffer();
        virtual ~IE_Imp_StarOffice_Sniffer() {}

        virtual const IE_SuffixConfidence * getSuffixConfidence ();
        virtual const IE_MimeConfidence * getMimeConfidence ();
        virtual UT_Confidence_t recognizeContents(GsfInput * input);
        virtual bool getDlgLabels(const char** szDesc, const char** szSuffixList, IEFileType *ft);
        virtual UT_Error constructImporter(PD_Document* pDocument, IE_Imp **ppie);
};

// Actual Importer
class IE_Imp_StarOffice : public IE_Imp
{
    public:
        IE_Imp_StarOffice(PD_Document *pDocument);
        ~IE_Imp_StarOffice();

    protected:
        virtual UT_Error _loadFile(GsfInput * input);

    private:
        FILE* mFile;
        GsfInfile* mOle;
        GsfInput *mDocStream;
        DocHdr mDocHdr;

    typedef std::map<UT_uint16, std::basic_string<UT_UCS4Char> > stringpool_map;
    stringpool_map mStringPool;

        void readRecSize(GsfInput* stream, UT_uint32& aSize, gsf_off_t* aEOR = NULL) noexcept(false);
        void readByteString(GsfInput* stream, UT_UCS4Char*& str) noexcept(false) {
			::readByteString(stream, str, mDocHdr.converter, mDocHdr.cryptor);
        }

        static UT_uint32 getVersion(const char* szVerString);
};

/* Helper functions; all throw an UT_IE_BOGUSDOCUMENT on error */
void readFlagRec(GsfInput* stream, UT_uint8& flags, gsf_off_t* newPos = NULL) noexcept(false);

inline void readChar(GsfInput* aStream, char& aChar) noexcept(false) {
    if (!gsf_input_read(aStream, 1, reinterpret_cast<guint8*>(&aChar)))
        throw UT_IE_BOGUSDOCUMENT;
}

inline void streamRead(GsfInput* aStream, UT_uint8& aDest) noexcept(false) {
    if (!gsf_input_read(aStream, 1, static_cast<guint8*>(&aDest)))
        throw UT_IE_BOGUSDOCUMENT;
}

inline void streamRead(GsfInput* aStream, UT_sint8& aDest) noexcept(false) {
    streamRead(aStream, reinterpret_cast<UT_uint8 &>(aDest));
}

inline void streamRead(GsfInput* aStream, char& aDest) noexcept(false) {
    streamRead(aStream, reinterpret_cast<UT_uint8 &>(aDest));
}


inline void streamRead(GsfInput* aStream, UT_uint16& aDest, bool isLittleEndian = true) noexcept(false) {
    guint8 buf [2];
    if (!gsf_input_read(aStream, 2, buf))
        throw UT_IE_BOGUSDOCUMENT;
    if (isLittleEndian) {
        aDest = buf [0] | (buf [1] << 8);
    }
    else {
        aDest = buf [1] | (buf [0] << 8);
    }
}

inline void streamRead(GsfInput* aStream, UT_sint16& aDest, bool isLittleEndian = true) noexcept(false) {
    streamRead(aStream, reinterpret_cast<UT_uint16 &>(aDest), isLittleEndian);
}

inline void streamRead(GsfInput* aStream, UT_uint32& aDest, bool isLittleEndian = true) noexcept(false) {
    guint8 buf [4];
    if (!gsf_input_read(aStream, 4, buf))
        throw UT_IE_BOGUSDOCUMENT;
    if (isLittleEndian) {
        aDest = buf [0] | (buf [1] << 8) | (buf [2] << 16) | (buf [3] << 24);
    }
    else {
        aDest = buf [3] | (buf [2] << 8) | (buf [1] << 16) | (buf [0] << 24);
    }
}

inline void streamRead(GsfInput* aStream, UT_sint32& aDest, bool isLittleEndian = true) noexcept(false) {
    streamRead(aStream, reinterpret_cast<UT_uint32 &>(aDest), isLittleEndian);
}

// reads the value as uint8
inline void streamRead(GsfInput* aStream, bool& aDest) noexcept(false) {
    streamRead(aStream, reinterpret_cast<UT_uint8&>(aDest));
}

// Class ID
inline void streamRead(GsfInput* aStream, ClsId& aClsId) noexcept(false) {
    streamRead(aStream, aClsId.n1);
    streamRead(aStream, aClsId.n2);
    streamRead(aStream, aClsId.n3);
    streamRead(aStream, aClsId.n4);
    streamRead(aStream, aClsId.n5);
    streamRead(aStream, aClsId.n6);
    streamRead(aStream, aClsId.n7);
    streamRead(aStream, aClsId.n8);
    streamRead(aStream, aClsId.n9);
    streamRead(aStream, aClsId.n10);
    streamRead(aStream, aClsId.n11);
}
#include "ut_debugmsg.h"

// for completeness...
inline void streamRead(GsfInput* aStream, char* aBuffer, UT_uint32 length) noexcept(false) {
    if (!gsf_input_read(aStream, length, reinterpret_cast<guint8 *>(aBuffer)))
        throw UT_IE_BOGUSDOCUMENT;
}

inline void streamRead(GsfInput* aStream, UT_uint8* aBuffer, UT_uint32 length) noexcept(false) {
    if (!gsf_input_read(aStream, length, static_cast<guint8*>(aBuffer)))
        throw UT_IE_BOGUSDOCUMENT;
}

// readRecSize must have been called already. readFlagRec must not.
// aEoa = position of the end of the attr.
void streamRead(GsfInput* aStream, TextAttr& aAttr, gsf_off_t aEoa) noexcept(false);

#endif /* IE_IMP_STAROFFICE_H */