dlls/msi/msipriv.h

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2002-2005 Mike McCormack for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __WINE_MSI_PRIVATE__
  22 #define __WINE_MSI_PRIVATE__
  23
  24 #include <stdarg.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "msi.h"
  29 #include "msiquery.h"
  30 #include "objbase.h"
  31 #include "objidl.h"
  32 #include "winnls.h"
  33 #include "wine/list.h"
  34
  35 #define MSI_DATASIZEMASK 0x00ff
  36 #define MSITYPE_VALID    0x0100
  37 #define MSITYPE_LOCALIZABLE 0x200
  38 #define MSITYPE_STRING   0x0800
  39 #define MSITYPE_NULLABLE 0x1000
  40 #define MSITYPE_KEY      0x2000
  41
  42 #define MSITYPE_IS_BINARY(type) (((type) & ~MSITYPE_NULLABLE) == (MSITYPE_STRING|MSITYPE_VALID))
  43
  44 struct tagMSITABLE;
  45 typedef struct tagMSITABLE MSITABLE;
  46
  47 struct string_table;
  48 typedef struct string_table string_table;
  49
  50 struct tagMSIOBJECTHDR;
  51 typedef struct tagMSIOBJECTHDR MSIOBJECTHDR;
  52
  53 typedef VOID (*msihandledestructor)( MSIOBJECTHDR * );
  54
  55 struct tagMSIOBJECTHDR
  56 {
  57     UINT magic;
  58     UINT type;
  59     LONG refcount;
  60     msihandledestructor destructor;
  61 };
  62
  63 typedef struct tagMSIDATABASE
  64 {
  65     MSIOBJECTHDR hdr;
  66     IStorage *storage;
  67     string_table *strings;
  68     LPCWSTR mode;
  69     struct list tables;
  70     struct list transforms;
  71 } MSIDATABASE;
  72
  73 typedef struct tagMSIVIEW MSIVIEW;
  74
  75 typedef struct tagMSIQUERY
  76 {
  77     MSIOBJECTHDR hdr;
  78     MSIVIEW *view;
  79     UINT row;
  80     MSIDATABASE *db;
  81     struct list mem;
  82 } MSIQUERY;
  83
  84 /* maybe we can use a Variant instead of doing it ourselves? */
  85 typedef struct tagMSIFIELD
  86 {
  87     UINT type;
  88     union
  89     {
  90         INT iVal;
  91         LPWSTR szwVal;
  92         IStream *stream;
  93     } u;
  94 } MSIFIELD;
  95
  96 typedef struct tagMSIRECORD
  97 {
  98     MSIOBJECTHDR hdr;
  99     UINT count;       /* as passed to MsiCreateRecord */
 100     MSIFIELD fields[1]; /* nb. array size is count+1 */
 101 } MSIRECORD;
 102
 103 typedef struct tagMSIVIEWOPS
 104 {
 105     /*
 106      * fetch_int - reads one integer from {row,col} in the table
 107      *
 108      *  This function should be called after the execute method.
 109      *  Data returned by the function should not change until
 110      *   close or delete is called.
 111      *  To get a string value, query the database's string table with
 112      *   the integer value returned from this function.
 113      */
 114     UINT (*fetch_int)( struct tagMSIVIEW *, UINT row, UINT col, UINT *val );
 115
 116     /*
 117      * fetch_int - reads one integer from {row,col} in the table
 118      *
 119      *  This function is similar to fetch_int, except fetches a
 120      *    stream instead of an integer.
 121      */
 122     UINT (*fetch_stream)( struct tagMSIVIEW *, UINT row, UINT col, IStream **stm );
 123
 124     /*
 125      * get_int - sets one integer at {row,col} in the table
 126      *
 127      *  Similar semantics to fetch_int
 128      */
 129     UINT (*set_int)( struct tagMSIVIEW *, UINT row, UINT col, UINT val );
 130
 131     /*
 132      * Inserts a new row into the database from the records contents
 133      */
 134     UINT (*insert_row)( struct tagMSIVIEW *, MSIRECORD * );
 135
 136     /*
 137      * execute - loads the underlying data into memory so it can be read
 138      */
 139     UINT (*execute)( struct tagMSIVIEW *, MSIRECORD * );
 140
 141     /*
 142      * close - clears the data read by execute from memory
 143      */
 144     UINT (*close)( struct tagMSIVIEW * );
 145
 146     /*
 147      * get_dimensions - returns the number of rows or columns in a table.
 148      *
 149      *  The number of rows can only be queried after the execute method
 150      *   is called. The number of columns can be queried at any time.
 151      */
 152     UINT (*get_dimensions)( struct tagMSIVIEW *, UINT *rows, UINT *cols );
 153
 154     /*
 155      * get_column_info - returns the name and type of a specific column
 156      *
 157      *  The name is HeapAlloc'ed by this function and should be freed by
 158      *   the caller.
 159      *  The column information can be queried at any time.
 160      */
 161     UINT (*get_column_info)( struct tagMSIVIEW *, UINT n, LPWSTR *name, UINT *type );
 162
 163     /*
 164      * modify - not yet implemented properly
 165      */
 166     UINT (*modify)( struct tagMSIVIEW *, MSIMODIFY, MSIRECORD * );
 167
 168     /*
 169      * delete - destroys the structure completely
 170      */
 171     UINT (*delete)( struct tagMSIVIEW * );
 172
 173 } MSIVIEWOPS;
 174
 175 struct tagMSIVIEW
 176 {
 177     MSIOBJECTHDR hdr;
 178     MSIVIEWOPS   *ops;
 179 };
 180
 181 struct msi_dialog_tag;
 182 typedef struct msi_dialog_tag msi_dialog;
 183
 184 typedef struct tagMSIPACKAGE
 185 {
 186     MSIOBJECTHDR hdr;
 187     MSIDATABASE *db;
 188     struct list components;
 189     struct list features;
 190     struct list files;
 191     struct list tempfiles;
 192     struct list folders;
 193     LPWSTR ActionFormat;
 194     LPWSTR LastAction;
 195
 196     struct list classes;
 197     struct list extensions;
 198     struct list progids;
 199     struct list mimes;
 200     struct list appids;
 201
 202     struct tagMSISCRIPT *script;
 203
 204     struct list RunningActions;
 205
 206     LPWSTR PackagePath;
 207     LPWSTR ProductCode;
 208
 209     UINT CurrentInstallState;
 210     msi_dialog *dialog;
 211     LPWSTR next_dialog;
 212
 213     struct list subscriptions;
 214 } MSIPACKAGE;
 215
 216 typedef struct tagMSIPREVIEW
 217 {
 218     MSIOBJECTHDR hdr;
 219     MSIPACKAGE *package;
 220     msi_dialog *dialog;
 221 } MSIPREVIEW;
 222
 223 #define MSI_MAX_PROPS 20
 224
 225 typedef struct tagMSISUMMARYINFO
 226 {
 227     MSIOBJECTHDR hdr;
 228     MSIDATABASE *db;
 229     DWORD update_count;
 230     PROPVARIANT property[MSI_MAX_PROPS];
 231 } MSISUMMARYINFO;
 232
 233 #define MSIHANDLETYPE_ANY 0
 234 #define MSIHANDLETYPE_DATABASE 1
 235 #define MSIHANDLETYPE_SUMMARYINFO 2
 236 #define MSIHANDLETYPE_VIEW 3
 237 #define MSIHANDLETYPE_RECORD 4
 238 #define MSIHANDLETYPE_PACKAGE 5
 239 #define MSIHANDLETYPE_PREVIEW 6
 240
 241 #define MSI_MAJORVERSION 2
 242 #define MSI_MINORVERSION 0
 243 #define MSI_BUILDNUMBER 2600
 244
 245 #define GUID_SIZE 39
 246
 247 #define MSIHANDLE_MAGIC 0x4d434923
 248 #define MSIMAXHANDLES 0xf0
 249
 250 DEFINE_GUID(CLSID_IMsiServer,   0x000C101C,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 251 DEFINE_GUID(CLSID_IMsiServerX1, 0x000C103E,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 252 DEFINE_GUID(CLSID_IMsiServerX2, 0x000C1090,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 253 DEFINE_GUID(CLSID_IMsiServerX3, 0x000C1094,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 254
 255 DEFINE_GUID(CLSID_IMsiServerMessage, 0x000C101D,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 256
 257 /* handle unicode/ascii output in the Msi* API functions */
 258 typedef struct {
 259     BOOL unicode;
 260     union {
 261        LPSTR a;
 262        LPWSTR w;
 263     } str;
 264 } awstring;
 265
 266 typedef struct {
 267     BOOL unicode;
 268     union {
 269        LPCSTR a;
 270        LPCWSTR w;
 271     } str;
 272 } awcstring;
 273
 274 UINT msi_strcpy_to_awstring( LPCWSTR str, awstring *awbuf, DWORD *sz );
 275
 276 /* handle functions */
 277 extern void *msihandle2msiinfo(MSIHANDLE handle, UINT type);
 278 extern MSIHANDLE alloc_msihandle( MSIOBJECTHDR * );
 279 extern void *alloc_msiobject(UINT type, UINT size, msihandledestructor destroy );
 280 extern void msiobj_addref(MSIOBJECTHDR *);
 281 extern int msiobj_release(MSIOBJECTHDR *);
 282 extern void msiobj_lock(MSIOBJECTHDR *);
 283 extern void msiobj_unlock(MSIOBJECTHDR *);
 284
 285 extern void free_cached_tables( MSIDATABASE *db );
 286 extern void msi_free_transforms( MSIDATABASE *db );
 287 extern string_table *load_string_table( IStorage *stg );
 288 extern UINT MSI_CommitTables( MSIDATABASE *db );
 289 extern HRESULT init_string_table( IStorage *stg );
 290
 291
 292 /* string table functions */
 293 extern BOOL msi_addstring( string_table *st, UINT string_no, const CHAR *data, int len, UINT refcount );
 294 extern BOOL msi_addstringW( string_table *st, UINT string_no, const WCHAR *data, int len, UINT refcount );
 295 extern UINT msi_id2stringW( string_table *st, UINT string_no, LPWSTR buffer, UINT *sz );
 296 extern UINT msi_id2stringA( string_table *st, UINT string_no, LPSTR buffer, UINT *sz );
 297
 298 extern LPWSTR MSI_makestring( MSIDATABASE *db, UINT stringid);
 299 extern UINT msi_string2idW( string_table *st, LPCWSTR buffer, UINT *id );
 300 extern UINT msi_string2idA( string_table *st, LPCSTR str, UINT *id );
 301 extern string_table *msi_init_stringtable( int entries, UINT codepage );
 302 extern VOID msi_destroy_stringtable( string_table *st );
 303 extern UINT msi_string_count( string_table *st );
 304 extern UINT msi_id_refcount( string_table *st, UINT i );
 305 extern UINT msi_string_totalsize( string_table *st, UINT *last );
 306 extern UINT msi_strcmp( string_table *st, UINT lval, UINT rval, UINT *res );
 307 extern const WCHAR *msi_string_lookup_id( string_table *st, UINT id );
 308 extern UINT msi_string_get_codepage( string_table *st );
 309
 310
 311 extern UINT VIEW_find_column( MSIVIEW *view, LPCWSTR name, UINT *n );
 312
 313 extern BOOL TABLE_Exists( MSIDATABASE *db, LPWSTR name );
 314
 315 extern UINT read_raw_stream_data( MSIDATABASE*, LPCWSTR stname,
 316                               USHORT **pdata, UINT *psz );
 317
 318 /* transform functions */
 319 extern UINT msi_table_apply_transform( MSIDATABASE *db, IStorage *stg );
 320
 321 /* action internals */
 322 extern UINT MSI_InstallPackage( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 323 extern void ACTION_free_package_structures( MSIPACKAGE* );
 324 extern UINT ACTION_DialogBox( MSIPACKAGE*, LPCWSTR);
 325 extern UINT MSI_Sequence( MSIPACKAGE *package, LPCWSTR szTable, INT iSequenceMode );
 326
 327 /* record internals */
 328 extern UINT MSI_RecordSetIStream( MSIRECORD *, unsigned int, IStream *);
 329 extern UINT MSI_RecordGetIStream( MSIRECORD *, unsigned int, IStream **);
 330 extern const WCHAR *MSI_RecordGetString( MSIRECORD *, unsigned int );
 331 extern MSIRECORD *MSI_CreateRecord( unsigned int );
 332 extern UINT MSI_RecordSetInteger( MSIRECORD *, unsigned int, int );
 333 extern UINT MSI_RecordSetStringW( MSIRECORD *, unsigned int, LPCWSTR );
 334 extern UINT MSI_RecordSetStringA( MSIRECORD *, unsigned int, LPCSTR );
 335 extern BOOL MSI_RecordIsNull( MSIRECORD *, unsigned int );
 336 extern UINT MSI_RecordGetStringW( MSIRECORD * , unsigned int, LPWSTR, DWORD *);
 337 extern UINT MSI_RecordGetStringA( MSIRECORD *, unsigned int, LPSTR, DWORD *);
 338 extern int MSI_RecordGetInteger( MSIRECORD *, unsigned int );
 339 extern UINT MSI_RecordReadStream( MSIRECORD *, unsigned int, char *, DWORD *);
 340 extern unsigned int MSI_RecordGetFieldCount( MSIRECORD *rec );
 341 extern UINT MSI_RecordSetStreamW( MSIRECORD *, unsigned int, LPCWSTR );
 342 extern UINT MSI_RecordSetStreamA( MSIRECORD *, unsigned int, LPCSTR );
 343 extern UINT MSI_RecordDataSize( MSIRECORD *, unsigned int );
 344 extern UINT MSI_RecordStreamToFile( MSIRECORD *, unsigned int, LPCWSTR );
 345
 346 /* stream internals */
 347 extern UINT get_raw_stream( MSIHANDLE hdb, LPCWSTR stname, IStream **stm );
 348 extern UINT db_get_raw_stream( MSIDATABASE *db, LPCWSTR stname, IStream **stm );
 349 extern void enum_stream_names( IStorage *stg );
 350
 351 /* database internals */
 352 extern UINT MSI_OpenDatabaseW( LPCWSTR, LPCWSTR, MSIDATABASE ** );
 353 extern UINT MSI_DatabaseOpenViewW(MSIDATABASE *, LPCWSTR, MSIQUERY ** );
 354 extern UINT MSI_OpenQuery( MSIDATABASE *, MSIQUERY **, LPCWSTR, ... );
 355 typedef UINT (*record_func)( MSIRECORD *, LPVOID );
 356 extern UINT MSI_IterateRecords( MSIQUERY *, DWORD *, record_func, LPVOID );
 357 extern MSIRECORD *MSI_QueryGetRecord( MSIDATABASE *db, LPCWSTR query, ... );
 358 extern UINT MSI_DatabaseImport( MSIDATABASE *, LPCWSTR, LPCWSTR );
 359 extern UINT MSI_DatabaseExport( MSIDATABASE *, LPCWSTR, LPCWSTR, LPCWSTR );
 360 extern UINT MSI_DatabaseGetPrimaryKeys( MSIDATABASE *, LPCWSTR, MSIRECORD ** );
 361
 362 /* view internals */
 363 extern UINT MSI_ViewExecute( MSIQUERY*, MSIRECORD * );
 364 extern UINT MSI_ViewFetch( MSIQUERY*, MSIRECORD ** );
 365 extern UINT MSI_ViewClose( MSIQUERY* );
 366
 367 /* package internals */
 368 extern MSIPACKAGE *MSI_CreatePackage( MSIDATABASE * );
 369 extern UINT MSI_OpenPackageW( LPCWSTR szPackage, MSIPACKAGE ** );
 370 extern UINT MSI_SetTargetPathW( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 371 extern UINT MSI_SetPropertyW( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 372 extern INT MSI_ProcessMessage( MSIPACKAGE *, INSTALLMESSAGE, MSIRECORD * );
 373 extern UINT MSI_GetPropertyW( MSIPACKAGE *, LPCWSTR, LPWSTR, DWORD * );
 374 extern UINT MSI_GetPropertyA(MSIPACKAGE *, LPCSTR, LPSTR, DWORD* );
 375 extern MSICONDITION MSI_EvaluateConditionW( MSIPACKAGE *, LPCWSTR );
 376 extern UINT MSI_GetComponentStateW( MSIPACKAGE *, LPWSTR, INSTALLSTATE *, INSTALLSTATE * );
 377 extern UINT MSI_GetFeatureStateW( MSIPACKAGE *, LPWSTR, INSTALLSTATE *, INSTALLSTATE * );
 378 extern UINT WINAPI MSI_SetFeatureStateW(MSIPACKAGE*, LPCWSTR, INSTALLSTATE );
 379
 380 /* for deformating */
 381 extern UINT MSI_FormatRecordW( MSIPACKAGE *, MSIRECORD *, LPWSTR, DWORD * );
 382 extern UINT MSI_FormatRecordA( MSIPACKAGE *, MSIRECORD *, LPSTR, DWORD * );
 383
 384 /* registry data encoding/decoding functions */
 385 extern BOOL unsquash_guid(LPCWSTR in, LPWSTR out);
 386 extern BOOL squash_guid(LPCWSTR in, LPWSTR out);
 387 extern BOOL encode_base85_guid(GUID *,LPWSTR);
 388 extern BOOL decode_base85_guid(LPCWSTR,GUID*);
 389 extern UINT MSIREG_OpenUninstallKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 390 extern UINT MSIREG_OpenUserProductsKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 391 extern UINT MSIREG_OpenFeatures(HKEY* key);
 392 extern UINT MSIREG_OpenFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 393 extern UINT MSIREG_OpenComponents(HKEY* key);
 394 extern UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 395 extern UINT MSIREG_OpenComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 396 extern UINT MSIREG_OpenProductsKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 397 extern UINT MSIREG_OpenUserFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 398 extern UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 399 extern UINT MSIREG_OpenUpgradeCodesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 400 extern UINT MSIREG_OpenUserUpgradeCodesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 401
 402 extern LONG msi_reg_set_val_str( HKEY hkey, LPCWSTR name, LPCWSTR value );
 403 extern LONG msi_reg_set_val_multi_str( HKEY hkey, LPCWSTR name, LPCWSTR value );
 404 extern LONG msi_reg_set_val_dword( HKEY hkey, LPCWSTR name, DWORD val );
 405
 406 /* msi dialog interface */
 407 typedef UINT (*msi_dialog_event_handler)( MSIPACKAGE*, LPCWSTR, LPCWSTR, msi_dialog* );
 408 extern msi_dialog *msi_dialog_create( MSIPACKAGE*, LPCWSTR, msi_dialog_event_handler );
 409 extern UINT msi_dialog_run_message_loop( msi_dialog* );
 410 extern void msi_dialog_end_dialog( msi_dialog* );
 411 extern void msi_dialog_check_messages( HANDLE );
 412 extern void msi_dialog_do_preview( msi_dialog* );
 413 extern void msi_dialog_destroy( msi_dialog* );
 414 extern BOOL msi_dialog_register_class( void );
 415 extern void msi_dialog_unregister_class( void );
 416 extern void msi_dialog_handle_event( msi_dialog*, LPCWSTR, LPCWSTR, MSIRECORD * );
 417 extern UINT msi_dialog_reset( msi_dialog *dialog );
 418
 419 /* preview */
 420 extern MSIPREVIEW *MSI_EnableUIPreview( MSIDATABASE * );
 421 extern UINT MSI_PreviewDialogW( MSIPREVIEW *, LPCWSTR );
 422
 423 /* summary information */
 424 extern MSISUMMARYINFO *MSI_GetSummaryInformationW( MSIDATABASE *db, UINT uiUpdateCount );
 425 extern LPWSTR msi_suminfo_dup_string( MSISUMMARYINFO *si, UINT uiProperty );
 426
 427 /* undocumented functions */
 428 UINT WINAPI MsiCreateAndVerifyInstallerDirectory( DWORD );
 429 UINT WINAPI MsiDecomposeDescriptorW( LPCWSTR, LPWSTR, LPWSTR, LPWSTR, DWORD * );
 430 UINT WINAPI MsiDecomposeDescriptorA( LPCSTR, LPSTR, LPSTR, LPSTR, DWORD * );
 431 LANGID WINAPI MsiLoadStringW( MSIHANDLE, UINT, LPWSTR, int, LANGID );
 432 LANGID WINAPI MsiLoadStringA( MSIHANDLE, UINT, LPSTR, int, LANGID );
 433
 434 /* UI globals */
 435 extern INSTALLUILEVEL gUILevel;
 436 extern HWND gUIhwnd;
 437 extern INSTALLUI_HANDLERA gUIHandlerA;
 438 extern INSTALLUI_HANDLERW gUIHandlerW;
 439 extern DWORD gUIFilter;
 440 extern LPVOID gUIContext;
 441 extern WCHAR gszLogFile[MAX_PATH];
 442
 443 /* memory allocation macro functions */
 444 static inline void *msi_alloc( size_t len )
 445 {
 446     return HeapAlloc( GetProcessHeap(), 0, len );
 447 }
 448
 449 static inline void *msi_alloc_zero( size_t len )
 450 {
 451     return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, len );
 452 }
 453
 454 static inline void *msi_realloc( void *mem, size_t len )
 455 {
 456     return HeapReAlloc( GetProcessHeap(), 0, mem, len );
 457 }
 458
 459 static inline void *msi_realloc_zero( void *mem, size_t len )
 460 {
 461     return HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len );
 462 }
 463
 464 static inline BOOL msi_free( void *mem )
 465 {
 466     return HeapFree( GetProcessHeap(), 0, mem );
 467 }
 468
 469 inline static char *strdupWtoA( LPCWSTR str )
 470 {
 471     LPSTR ret = NULL;
 472     DWORD len;
 473
 474     if (!str) return ret;
 475     len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);
 476     ret = msi_alloc( len );
 477     if (ret)
 478         WideCharToMultiByte( CP_ACP, 0, str, -1, ret, len, NULL, NULL );
 479     return ret;
 480 }
 481
 482 inline static LPWSTR strdupAtoW( LPCSTR str )
 483 {
 484     LPWSTR ret = NULL;
 485     DWORD len;
 486
 487     if (!str) return ret;
 488     len = MultiByteToWideChar( CP_ACP, 0, str, -1, NULL, 0 );
 489     ret = msi_alloc( len * sizeof(WCHAR) );
 490     if (ret)
 491         MultiByteToWideChar( CP_ACP, 0, str, -1, ret, len );
 492     return ret;
 493 }
 494
 495 inline static LPWSTR strdupW( LPCWSTR src )
 496 {
 497     LPWSTR dest;
 498     if (!src) return NULL;
 499     dest = msi_alloc( (lstrlenW(src)+1)*sizeof(WCHAR) );
 500     if (dest)
 501         lstrcpyW(dest, src);
 502     return dest;
 503 }
 504
 505 #endif /* __WINE_MSI_PRIVATE__ */