Add more magic to find the start of the nametable.

[wine.git] / dlls / oleaut32 / typelib.h

/*
 * typelib.h  internal wine data structures
 * used to decode typelib's
 *
 * Copyright 1999 Rein KLazes
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef _WINE_TYPELIB_H
#define _WINE_TYPELIB_H

#include "oleauto.h"
#include "wine/windef16.h"

#define TLBMAGIC2 "MSFT"
#define TLBMAGIC1 "SLTG"
#define HELPDLLFLAG (0x0100)
#define DO_NOT_SEEK (-1)

#define MSFT_HREFTYPE_INTHISFILE(href) (!((href) & 3))
#define MSFT_HREFTYPE_INDEX(href) ((href) /sizeof(MSFT_TypeInfoBase))

/*-------------------------FILE STRUCTURES-----------------------------------*/

/* There are two known file formats, those created with ICreateTypeLib
 * have the signature "SLTG" as their first four bytes, while those created
 * with ICreateTypeLib2 have "MSFT".
 */

/*****************************************************
 *                MSFT typelibs
 *
 * These are TypeLibs created with ICreateTypeLib2
 *
 */

/*
 * structure of the typelib type2 header
 * it is at the beginning of a type lib file
 *
 */
typedef struct tagMSFT_Header {
/*0x00*/INT magic1;       /* 0x5446534D "MSFT" */
        INT   magic2;       /* 0x00010002 version nr? */
        INT   posguid;      /* position of libid in guid table  */
                            /* (should be,  else -1) */
        INT   lcid;         /* locale id */
/*0x10*/INT   lcid2;
        INT   varflags;     /* (largely) unknown flags ,seems to be always 41 */
                            /* becomes 0x51 with a helpfile defined */
                            /* if help dll defined it's 0x151 */
                            /* update : the lower nibble is syskind */
        INT   version;      /* set with SetVersion() */
        INT   flags;        /* set with SetFlags() */
/*0x20*/INT   nrtypeinfos;  /* number of typeinfo's (till so far) */
        INT   helpstring;   /* position of help string in stringtable */
        INT   helpstringcontext;
        INT   helpcontext;
/*0x30*/INT   nametablecount;   /* number of names in name table */
        INT   nametablechars;   /* nr of characters in name table */
        INT   NameOffset;       /* offset of name in name table */
        INT   helpfile;         /* position of helpfile in stringtable */
/*0x40*/INT   CustomDataOffset; /* if -1 no custom data, else it is offset */
                                /* in customer data/guid offset table */
        INT   res44;            /* unknown always: 0x20 */
        INT   res48;            /* unknown always: 0x80 */
        INT   dispatchpos;      /* gets a value (1+n*0x0c) with Idispatch interfaces */
/*0x50*/INT   res50;            /* is zero becomes one when an interface is derived */
} MSFT_Header;

/* segments in the type lib file have a structure like this: */
typedef struct tagMSFT_pSeg {
        INT   offset;       /* absolute offset in file */
        INT   length;       /* length of segment */
        INT   res08;        /* unknown always -1 */
        INT   res0c;        /* unknown always 0x0f in the header */
                            /* 0x03 in the typeinfo_data */
} MSFT_pSeg;

/* layout of the main segment directory */
typedef struct tagMSFT_SegDir {
/*1*/MSFT_pSeg pTypeInfoTab; /* each type info get an entry of 0x64 bytes */
                             /* (25 ints) */
/*2*/MSFT_pSeg pImpInfo;     /* table with info for imported types */
/*3*/MSFT_pSeg pImpFiles;    /* import libaries */
/*4*/MSFT_pSeg pRefTab;      /* References table */
/*5*/MSFT_pSeg pLibtab;      /* always exists, alway same size (0x80) */
                             /* hash table w offsets to guid????? */
/*6*/MSFT_pSeg pGuidTab;     /* all guids are stored here together with  */
                             /* offset in some table???? */
/*7*/MSFT_pSeg res07;        /* always created, alway same size (0x200) */
                             /* purpose largely unknown */
/*8*/MSFT_pSeg pNametab;     /* name tables */
/*9*/MSFT_pSeg pStringtab;   /* string table */
/*A*/MSFT_pSeg pTypdescTab;  /* table with type descriptors */
/*B*/MSFT_pSeg pArrayDescriptions;
/*C*/MSFT_pSeg pCustData;    /* data table, used for custom data and default */
                             /* parameter values */
/*D*/MSFT_pSeg pCDGuids;     /* table with offsets for the guids and into */
                             /* the customer data table */
/*E*/MSFT_pSeg res0e;        /* unknown */
/*F*/MSFT_pSeg res0f;        /* unknown  */
} MSFT_SegDir;


/* base type info data */
typedef struct tagMSFT_TypeInfoBase {
/*000*/ INT   typekind;             /*  it is the TKIND_xxx */
                                    /* some byte alignment stuf */
        INT     memoffset;          /* points past the file, if no elements */
        INT     res2;               /* zero if no element, N*0x40 */
        INT     res3;               /* -1 if no lement, (N-1)*0x38 */
/*010*/ INT     res4;               /* always? 3 */
        INT     res5;               /* always? zero */
        INT     cElement;           /* counts elements, HI=cVars, LO=cFuncs */
        INT     res7;               /* always? zero */
/*020*/ INT     res8;               /* always? zero */
        INT     res9;               /* always? zero */
        INT     resA;               /* always? zero */
        INT     posguid;            /* position in guid table */
/*030*/ INT     flags;              /* Typeflags */
        INT     NameOffset;         /* offset in name table */
        INT     version;            /* element version */
        INT     docstringoffs;      /* offset of docstring in string tab */
/*040*/ INT     helpstringcontext;  /*  */
        INT     helpcontext;    /* */
        INT     oCustData;          /* offset in customer data table */
        INT16   cImplTypes;     /* nr of implemented interfaces */
        INT16   cbSizeVft;      /* virtual table size, not including inherits */
/*050*/ INT     size;           /* size in bytes, at least for structures */
        /* FIXME: name of this field */
        INT     datatype1;      /* position in type description table */
                                /* or in base intefaces */
                                /* if coclass: offset in reftable */
                                /* if interface: reference to inherited if */
        INT     datatype2;      /* if 0x8000, entry above is valid */
                                /* actually dunno */
                                /* else it is zero? */
        INT     res18;          /* always? 0 */
/*060*/ INT     res19;          /* always? -1 */
    } MSFT_TypeInfoBase;

/* layout of an entry with information on imported types */
typedef struct tagMSFT_ImpInfo {
    INT     res0;           /* unknown */
    INT     oImpFile;       /* offset inthe Import File table */
    INT     oGuid;          /* offset in Guid table */
    } MSFT_ImpInfo;

/* function description data */
typedef struct {
/*  INT   recsize;       record size including some xtra stuff */
    INT   DataType;     /* data type of the memeber, eg return of function */
    INT   Flags;        /* something to do with attribute flags (LOWORD) */
    INT16 VtableOffset; /* offset in vtable */
    INT16 res3;         /* some offset into dunno what */
    INT   FKCCIC;       /* bit string with the following  */
                        /* meaning (bit 0 is the msb): */
                        /* bit 2 indicates that oEntry is numeric */
                        /* bit 3 that parameter has default values */
                        /* calling convention (bits 4-7 ) */
                        /* bit 8 indicates that custom data is present */
                        /* Invokation kind (bits 9-12 ) */
                        /* function kind (eg virtual), bits 13-15  */
    INT16 nrargs;       /* number of arguments (including optional ????) */
    INT16 nroargs;      /* nr of optional arguments */
    /* optional attribute fields, the number of them is variable */
    INT   OptAttr[1];
/*
0*  INT   helpcontext;
1*  INT   oHelpString;
2*  INT   oEntry;       // either offset in string table or numeric as it is //
3*  INT   res9;         // unknown (-1) //
4*  INT   resA;         // unknown (-1) //
5*  INT   HelpStringContext;
    // these are controlled by a bit set in the FKCCIC field  //
6*  INT   oCustData;        // custom data for function //
7*  INT   oArgCustData[1];  // custom data per argument //
*/
} MSFT_FuncRecord;

/* after this may follow an array with default value pointers if the
 * appropriate bit in the FKCCIC field has been set:
 * INT   oDefautlValue[nrargs];
 */

    /* Parameter info one per argument*/
typedef struct {
        INT   DataType;
        INT   oName;
        INT   Flags;
    } MSFT_ParameterInfo;

/* Variable description data */
typedef struct {
/*  INT   recsize;      // record size including some xtra stuff */
    INT   DataType;     /* data type of the variable */
    INT   Flags;        /* VarFlags (LOWORD) */
    INT16 VarKind;      /* VarKind */
    INT16 res3;         /* some offset into dunno what */
    INT   OffsValue;    /* value of the variable or the offset  */
                        /* in the data structure */
    /* optional attribute fields, the number of them is variable */
    /* controlled by record length */
    INT   HelpContext;
    INT   oHelpString;
    INT   res9;         /* unknown (-1) */
    INT   oCustData;        /* custom data for variable */
    INT   HelpStringContext;

} MSFT_VarRecord;

/* Structure of the reference data  */
typedef struct {
    INT   reftype;  /* either offset in type info table, then it's */
                    /* a multiple of 64 */
                    /* or offset in the external reference table */
                    /* with an offset of 1 */
    INT   flags;
    INT   oCustData;    /* custom data */
    INT   onext;    /* next offset, -1 if last */
} MSFT_RefRecord;

/* this is how a guid is stored */
typedef struct {
    GUID guid;
    INT   unk10;        /* differntiate with libid, classid etc? */
                        /* it's -2 for a libary */
                        /* it's 0 for an interface */
    INT   unk14;        /* always? -1 */
} MSFT_GuidEntry;
/* some data preceding entries in the name table */
typedef struct {
    INT   unk00;        /* sometimes -1 (lib, parameter) ,
                           sometimes 0 (interface, func) */
    INT   unk10;        /* sometimes -1 (lib) , sometimes 0 (interface, func),
                           sometimes 0x10 (par) */
    INT   namelen;      /* only lower 8 bits are valid */
} MSFT_NameIntro;
/* the custom data table directory has enties like this */
typedef struct {
    INT   GuidOffset;
    INT   DataOffset;
    INT   next;     /* next offset in the table, -1 if it's the last */
} MSFT_CDGuid;


/***********************************************************
 *
 *                SLTG typelibs.
 *
 * These are created with ICreateTypeLib
 *
 */

#include "pshpack1.h"

typedef struct {
/*00*/  DWORD SLTG_magic;       /* 0x47544c53  == "SLTG" */
/*04*/  WORD nrOfFileBlks;      /* no of SLTG_BlkEntry's + 1 */
/*06*/  WORD res06;             /* ?? always 9 */
/*08*/  WORD res08;             /* some kind of len/offset ?? */
/*0a*/  WORD first_blk;         /* 1 based index into blk entries that
                                   corresponds to first block in file */
/*0c*/  DWORD res0c;            /* always 0x000204ff */
/*10*/  DWORD res10;            /* always 0x00000000 */
/*14*/  DWORD res14;            /* always 0x000000c0 */
/*18*/  DWORD res18;            /* always 0x46000000 */
/*1c*/  DWORD res1c;            /* always 0x00000044 */
/*20*/  DWORD res20;            /* always 0xffff0000 */
} SLTG_Header;

/* This gets followed by a list of block entries */
typedef struct {
/*00*/  DWORD len;
/*04*/  WORD index_string; /* offs from start of SLTG_Magic to index string */
/*06*/  WORD next;
} SLTG_BlkEntry;

/* The order of the blocks in the file is given by starting at Block
   entry firt_blk and stepping through using the next pointer */

/* These then get followed by this magic */
typedef struct {
/*00*/ BYTE res00;              /* always 0x01 */
/*01*/ CHAR CompObj_magic[8];   /* always "CompObj" */
/*09*/ CHAR dir_magic[4];       /* always "dir" */
} SLTG_Magic;

#define SLTG_COMPOBJ_MAGIC "CompObj"
#define SLTG_DIR_MAGIC "dir"

/* Next we have SLTG_Header.nrOfFileBlks - 2 of Index strings.  These
are presumably unique to within the file and look something like
"AAAAAAAAAA" with the first character incremented from 'A' to ensure
uniqueness.  I guess successive chars increment when we need to wrap
the first one. */

typedef struct {
/*00*/ CHAR string[11];
} SLTG_Index;


/* This is followed by SLTG_pad9 */
typedef struct {
/*00*/ CHAR pad[9];     /* 9 '\0's */
} SLTG_Pad9;


/* Now we have the noOfFileBlks - 1 worth of blocks. The length of
each block is given by its entry in SLTG_BlkEntry. */

/* type SLTG_NAME in rather like a BSTR except that the length in
bytes is given by the first WORD and the string contains 8bit chars */

typedef WORD SLTG_Name;

/* The main library block looks like this.  This one seems to come last */

typedef struct {
/*00*/  WORD magic;             /* 0x51cc */
/*02*/  WORD res02;             /* 0x0003, 0x0004 */
/*04*/  WORD name;              /* offset to name in name table */
/*06*/  SLTG_Name res06;        /* maybe this is just WORD == 0xffff */
        SLTG_Name helpstring;
        SLTG_Name helpfile;
        DWORD helpcontext;
        WORD syskind;           /* == 1 for win32, 0 for win16 */
        WORD lcid;              /* == 0x409, 0x809 etc */
        DWORD res12;            /* == 0 */
        WORD libflags;          /* LIBFLAG_* */
        WORD maj_vers;
        WORD min_vers;
        GUID uuid;
} SLTG_LibBlk;

#define SLTG_LIBBLK_MAGIC 0x51cc

/* we then get 0x40 bytes worth of 0xffff or small numbers followed by
   nrOfFileBlks - 2 of these */
typedef struct {
        WORD small_no;
        SLTG_Name index_name; /* This refers to a name in the directory */
        SLTG_Name other_name; /* Another one of these weird names */
        WORD res1a;           /* 0xffff */
        WORD name_offs;       /* offset to name in name table */
        WORD more_bytes;      /* if this is non-zero we get this many
                                 bytes before the next element, which seem
                                 to reference the docstring of the type ? */
        WORD res20;           /* 0xffff */
        DWORD helpcontext;
        WORD res26;           /* 0xffff */
        GUID uuid;
} SLTG_OtherTypeInfo;

/* Next we get WORD 0x0003 followed by a DWORD which if we add to
0x216 gives the offset to the name table from the start of the LibBlk
struct */

typedef struct {
/*00*/  WORD magic;             /* 0x0501 */
/*02*/  DWORD href_table;       /* if not 0xffffffff, then byte offset from
                                   beginning of struct to href table */
/*06*/  DWORD res06;            /* 0xffffffff */
/*0a*/  DWORD elem_table;       /* offset to members */
/*0e*/  DWORD res0e;            /* 0xffffffff */
/*12*/  WORD major_version;     /* major version number */
/*14*/  WORD minor_version;     /* minor version number */
/*16*/  DWORD res16;    /* 0xfffe0000 */
/*1a*/  BYTE typeflags1;/* 0x02 | top 5 bits hold l5sbs of TYPEFLAGS */
/*1b*/  BYTE typeflags2;/* TYPEFLAGS >> 5 */
/*1c*/  BYTE typeflags3;/* 0x02*/
/*1d*/  BYTE typekind;  /* 0x03 == TKIND_INTERFACE etc. */
/*1e*/  DWORD res1e;    /* 0x00000000 or 0xffffffff */
} SLTG_TypeInfoHeader;

#define SLTG_TIHEADER_MAGIC 0x0501

typedef struct {
/*00*/  WORD cFuncs;
/*02*/  WORD cVars;
/*04*/  WORD cImplTypes;
/*06*/  WORD res06;
/*08*/  WORD res08;
/*0a*/  WORD res0a;
/*0c*/  WORD res0c;
/*0e*/  WORD res0e;
/*10*/  WORD res10;
/*12*/  WORD res12;
/*14*/  WORD res14;
/*16*/  WORD res16;
/*18*/  WORD res18;
/*1a*/  WORD res1a;
/*1c*/  WORD res1c;
/*1e*/  WORD res1e;
/*20*/  WORD cbSizeInstance;
/*22*/  WORD cbAlignment;
/*24*/  WORD res24;
/*26*/  WORD res26;
/*28*/  WORD cbSizeVft;
/*2a*/  WORD res2a;
/*2c*/  WORD res2c;
/*2e*/  WORD res2e;
/*30*/  WORD res30;
/*32*/  WORD res32;
/*34*/  WORD res34;
} SLTG_TypeInfoTail;

typedef struct {
/*00*/ WORD res00; /* 0x0001 sometimes 0x0003 ?? */
/*02*/ WORD res02; /* 0xffff */
/*04*/ BYTE res04; /* 0x01 */
/*05*/ DWORD cbExtra; /* No of bytes that follow */
} SLTG_MemberHeader;

typedef struct {
/*00*/  WORD magic;     /* 0x120a */
/*02*/  WORD next;      /* offset in bytes to next block from start of block
                           group, 0xffff if last item */
/*04*/  WORD name;      /* offset to name within name table */
/*06*/  WORD value;     /* offset to value from start of block group */
/*08*/  WORD res08;     /* 0x56 */
/*0a*/  DWORD memid;    /* memid */
/*0e*/  WORD helpcontext;/* 0xfffe == no context, 0x0001 == stored in EnumInfo struct, else offset
                            to value from start of block group */
/*10*/  WORD helpstring;/* offset from start of block group to string offset */
} SLTG_EnumItem;

#define SLTG_ENUMITEM_MAGIC 0x120a


typedef struct {
        BYTE magic;     /* 0x4c or 0x6c */
        BYTE inv;       /* high nibble is INVOKE_KIND, low nibble = 2 */
        WORD next;      /* byte offset from beginning of group to next fn */
        WORD name;      /* Offset within name table to name */
        DWORD dispid;   /* dispid */
        WORD helpcontext; /* helpcontext (again 1 is special) */
        WORD helpstring;/* helpstring offset to offset */
        WORD arg_off;   /* offset to args from start of block */
        BYTE nacc;      /* lowest 3bits are CALLCONV, rest are no of args */
        BYTE retnextopt;/* if 0x80 bit set ret type follows else next WORD
                           is offset to ret type. No of optional args is
                           middle 6 bits */
        WORD rettype;   /* return type VT_?? or offset to ret type */
        WORD vtblpos;   /* position in vtbl? */
        WORD funcflags; /* present if magic == 0x6c */
/* Param list starts, repeat next two as required */
#if 0
        WORD  name;     /* offset to 2nd letter of name */
        WORD+ type;     /* VT_ of param */
#endif
} SLTG_Function;

#define SLTG_FUNCTION_MAGIC 0x4c
#define SLTG_FUNCTION_WITH_FLAGS_MAGIC 0x6c

typedef struct {
/*00*/  BYTE magic;             /* 0xdf */
/*01*/  BYTE res01;             /* 0x00 */
/*02*/  DWORD res02;            /* 0xffffffff */
/*06*/  DWORD res06;            /* 0xffffffff */
/*0a*/  DWORD res0a;            /* 0xffffffff */
/*0e*/  DWORD res0e;            /* 0xffffffff */
/*12*/  DWORD res12;            /* 0xffffffff */
/*16*/  DWORD res16;            /* 0xffffffff */
/*1a*/  DWORD res1a;            /* 0xffffffff */
/*1e*/  DWORD res1e;            /* 0xffffffff */
/*22*/  DWORD res22;            /* 0xffffffff */
/*26*/  DWORD res26;            /* 0xffffffff */
/*2a*/  DWORD res2a;            /* 0xffffffff */
/*2e*/  DWORD res2e;            /* 0xffffffff */
/*32*/  DWORD res32;            /* 0xffffffff */
/*36*/  DWORD res36;            /* 0xffffffff */
/*3a*/  DWORD res3a;            /* 0xffffffff */
/*3e*/  DWORD res3e;            /* 0xffffffff */
/*42*/  WORD  res42;            /* 0xffff */
/*44*/  DWORD number;           /* this is 8 times the number of refs */
/*48*/  /* Now we have number bytes (8 for each ref) of SLTG_UnknownRefInfo */

/*50*/  WORD res50;             /* 0xffff */
/*52*/  BYTE res52;             /* 0x01 */
/*53*/  DWORD res53;            /* 0x00000000 */
/*57*/  SLTG_Name names[1];
  /*    Now we have number/8 SLTG_Names (first WORD is no of bytes in the ascii
   *    string).  Strings look like "*\Rxxxx*#n".  If xxxx == ffff then the
   *    ref refers to the nth type listed in this library (0 based).  Else
   *    the xxxx (which maybe fewer than 4 digits) is the offset into the name
   *    table to a string "*\G{<guid>}#1.0#0#C:\WINNT\System32\stdole32.tlb#"
   *    The guid is the typelib guid; the ref again refers to the nth type of
   *    the imported typelib.
   */

/*xx*/ BYTE resxx;              /* 0xdf */

} SLTG_RefInfo;

#define SLTG_REF_MAGIC 0xdf

typedef struct {
        WORD res00;     /* 0x0001 */
        BYTE res02;     /* 0x02 */
        BYTE res03;     /* 0x40 if internal ref, 0x00 if external ? */
        WORD res04;     /* 0xffff */
        WORD res06;     /* 0x0000, 0x0013 or 0xffff ?? */
} SLTG_UnknownRefInfo;

typedef struct {
  WORD res00; /* 0x004a */
  WORD next;  /* byte offs to next interface */
  WORD res04; /* 0xffff */
  BYTE impltypeflags; /* IMPLTYPEFLAG_* */
  BYTE res07; /* 0x80 */
  WORD res08; /* 0x0012, 0x0028 ?? */
  WORD ref;   /* number in ref table ? */
  WORD res0c; /* 0x4000 */
  WORD res0e; /* 0xfffe */
  WORD res10; /* 0xffff */
  WORD res12; /* 0x001d */
  WORD pos_in_table; /* 0x0, 0x4, ? */
} SLTG_ImplInfo;

#define SLTG_IMPL_MAGIC 0x004a

typedef struct {
  BYTE magic; /* 0x0a */
  BYTE typepos;
  WORD next;
  WORD name;
  WORD byte_offs; /* pos in struct */
  WORD type; /* if typepos == 0x02 this is the type, else offset to type */
  DWORD memid;
  WORD helpcontext; /* ?? */
  WORD helpstring; /* ?? */
} SLTG_RecordItem;

#define SLTG_RECORD_MAGIC 0x0a


/* CARRAYs look like this
WORD type == VT_CARRAY
WORD offset from start of block to SAFEARRAY
WORD typeofarray
*/

extern DWORD _invoke(LPVOID func,CALLCONV callconv, int nrargs, DWORD *args);

#include "poppack.h"

/*---------------------------END--------------------------------------------*/
#endif