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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 void *MSIITERHANDLE;
 104
 105 typedef struct tagMSIVIEWOPS
 106 {
 107     /*
 108      * fetch_int - reads one integer from {row,col} in the table
 109      *
 110      *  This function should be called after the execute method.
 111      *  Data returned by the function should not change until
 112      *   close or delete is called.
 113      *  To get a string value, query the database's string table with
 114      *   the integer value returned from this function.
 115      */
 116     UINT (*fetch_int)( struct tagMSIVIEW *, UINT row, UINT col, UINT *val );
 117
 118     /*
 119      * fetch_stream - gets a stream from {row,col} in the table
 120      *
 121      *  This function is similar to fetch_int, except fetches a
 122      *    stream instead of an integer.
 123      */
 124     UINT (*fetch_stream)( struct tagMSIVIEW *, UINT row, UINT col, IStream **stm );
 125
 126     /*
 127      * get_int - sets one integer at {row,col} in the table
 128      *
 129      *  Similar semantics to fetch_int
 130      */
 131     UINT (*set_int)( struct tagMSIVIEW *, UINT row, UINT col, UINT val );
 132
 133     /*
 134      * Inserts a new row into the database from the records contents
 135      */
 136     UINT (*insert_row)( struct tagMSIVIEW *, MSIRECORD * );
 137
 138     /*
 139      * execute - loads the underlying data into memory so it can be read
 140      */
 141     UINT (*execute)( struct tagMSIVIEW *, MSIRECORD * );
 142
 143     /*
 144      * close - clears the data read by execute from memory
 145      */
 146     UINT (*close)( struct tagMSIVIEW * );
 147
 148     /*
 149      * get_dimensions - returns the number of rows or columns in a table.
 150      *
 151      *  The number of rows can only be queried after the execute method
 152      *   is called. The number of columns can be queried at any time.
 153      */
 154     UINT (*get_dimensions)( struct tagMSIVIEW *, UINT *rows, UINT *cols );
 155
 156     /*
 157      * get_column_info - returns the name and type of a specific column
 158      *
 159      *  The name is HeapAlloc'ed by this function and should be freed by
 160      *   the caller.
 161      *  The column information can be queried at any time.
 162      */
 163     UINT (*get_column_info)( struct tagMSIVIEW *, UINT n, LPWSTR *name, UINT *type );
 164
 165     /*
 166      * modify - not yet implemented properly
 167      */
 168     UINT (*modify)( struct tagMSIVIEW *, MSIMODIFY, MSIRECORD * );
 169
 170     /*
 171      * delete - destroys the structure completely
 172      */
 173     UINT (*delete)( struct tagMSIVIEW * );
 174
 175     /*
 176      * find_matching_rows - iterates through rows that match a value
 177      *
 178      * If the column type is a string then a string ID should be passed in.
 179      *  If the value to be looked up is an integer then no transformation of
 180      *  the input value is required, except if the column is a string, in which
 181      *  case a string ID should be passed in.
 182      * The handle is an input/output parameter that keeps track of the current
 183      *  position in the iteration. It must be initialised to zero before the
 184      *  first call and continued to be passed in to subsequent calls.
 185      */
 186     UINT (*find_matching_rows)( struct tagMSIVIEW *, UINT col, UINT val, UINT *row, MSIITERHANDLE *handle );
 187 } MSIVIEWOPS;
 188
 189 struct tagMSIVIEW
 190 {
 191     MSIOBJECTHDR hdr;
 192     const MSIVIEWOPS *ops;
 193 };
 194
 195 struct msi_dialog_tag;
 196 typedef struct msi_dialog_tag msi_dialog;
 197
 198 typedef struct tagMSIPACKAGE
 199 {
 200     MSIOBJECTHDR hdr;
 201     MSIDATABASE *db;
 202     struct list components;
 203     struct list features;
 204     struct list files;
 205     struct list tempfiles;
 206     struct list folders;
 207     LPWSTR ActionFormat;
 208     LPWSTR LastAction;
 209
 210     struct list classes;
 211     struct list extensions;
 212     struct list progids;
 213     struct list mimes;
 214     struct list appids;
 215
 216     struct tagMSISCRIPT *script;
 217
 218     struct list RunningActions;
 219
 220     LPWSTR PackagePath;
 221     LPWSTR ProductCode;
 222
 223     UINT CurrentInstallState;
 224     msi_dialog *dialog;
 225     LPWSTR next_dialog;
 226
 227     struct list subscriptions;
 228 } MSIPACKAGE;
 229
 230 typedef struct tagMSIPREVIEW
 231 {
 232     MSIOBJECTHDR hdr;
 233     MSIPACKAGE *package;
 234     msi_dialog *dialog;
 235 } MSIPREVIEW;
 236
 237 #define MSI_MAX_PROPS 20
 238
 239 typedef struct tagMSISUMMARYINFO
 240 {
 241     MSIOBJECTHDR hdr;
 242     MSIDATABASE *db;
 243     DWORD update_count;
 244     PROPVARIANT property[MSI_MAX_PROPS];
 245 } MSISUMMARYINFO;
 246
 247 #define MSIHANDLETYPE_ANY 0
 248 #define MSIHANDLETYPE_DATABASE 1
 249 #define MSIHANDLETYPE_SUMMARYINFO 2
 250 #define MSIHANDLETYPE_VIEW 3
 251 #define MSIHANDLETYPE_RECORD 4
 252 #define MSIHANDLETYPE_PACKAGE 5
 253 #define MSIHANDLETYPE_PREVIEW 6
 254
 255 #define MSI_MAJORVERSION 2
 256 #define MSI_MINORVERSION 0
 257 #define MSI_BUILDNUMBER 2600
 258
 259 #define GUID_SIZE 39
 260
 261 #define MSIHANDLE_MAGIC 0x4d434923
 262 #define MSIMAXHANDLES 0xf0
 263
 264 DEFINE_GUID(CLSID_IMsiServer,   0x000C101C,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 265 DEFINE_GUID(CLSID_IMsiServerX1, 0x000C103E,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 266 DEFINE_GUID(CLSID_IMsiServerX2, 0x000C1090,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 267 DEFINE_GUID(CLSID_IMsiServerX3, 0x000C1094,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 268
 269 DEFINE_GUID(CLSID_IMsiServerMessage, 0x000C101D,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 270
 271 /* handle unicode/ascii output in the Msi* API functions */
 272 typedef struct {
 273     BOOL unicode;
 274     union {
 275        LPSTR a;
 276        LPWSTR w;
 277     } str;
 278 } awstring;
 279
 280 typedef struct {
 281     BOOL unicode;
 282     union {
 283        LPCSTR a;
 284        LPCWSTR w;
 285     } str;
 286 } awcstring;
 287
 288 UINT msi_strcpy_to_awstring( LPCWSTR str, awstring *awbuf, DWORD *sz );
 289
 290 /* handle functions */
 291 extern void *msihandle2msiinfo(MSIHANDLE handle, UINT type);
 292 extern MSIHANDLE alloc_msihandle( MSIOBJECTHDR * );
 293 extern void *alloc_msiobject(UINT type, UINT size, msihandledestructor destroy );
 294 extern void msiobj_addref(MSIOBJECTHDR *);
 295 extern int msiobj_release(MSIOBJECTHDR *);
 296 extern void msiobj_lock(MSIOBJECTHDR *);
 297 extern void msiobj_unlock(MSIOBJECTHDR *);
 298
 299 extern void free_cached_tables( MSIDATABASE *db );
 300 extern void msi_free_transforms( MSIDATABASE *db );
 301 extern string_table *load_string_table( IStorage *stg );
 302 extern UINT MSI_CommitTables( MSIDATABASE *db );
 303 extern HRESULT init_string_table( IStorage *stg );
 304
 305
 306 /* string table functions */
 307 extern BOOL msi_addstring( string_table *st, UINT string_no, const CHAR *data, int len, UINT refcount );
 308 extern BOOL msi_addstringW( string_table *st, UINT string_no, const WCHAR *data, int len, UINT refcount );
 309 extern UINT msi_id2stringW( string_table *st, UINT string_no, LPWSTR buffer, UINT *sz );
 310 extern UINT msi_id2stringA( string_table *st, UINT string_no, LPSTR buffer, UINT *sz );
 311
 312 extern LPWSTR MSI_makestring( MSIDATABASE *db, UINT stringid);
 313 extern UINT msi_string2idW( string_table *st, LPCWSTR buffer, UINT *id );
 314 extern UINT msi_string2idA( string_table *st, LPCSTR str, UINT *id );
 315 extern string_table *msi_init_stringtable( int entries, UINT codepage );
 316 extern VOID msi_destroy_stringtable( string_table *st );
 317 extern UINT msi_string_count( string_table *st );
 318 extern UINT msi_id_refcount( string_table *st, UINT i );
 319 extern UINT msi_string_totalsize( string_table *st, UINT *last );
 320 extern UINT msi_strcmp( string_table *st, UINT lval, UINT rval, UINT *res );
 321 extern const WCHAR *msi_string_lookup_id( string_table *st, UINT id );
 322 extern UINT msi_string_get_codepage( string_table *st );
 323
 324
 325 extern UINT VIEW_find_column( MSIVIEW *view, LPCWSTR name, UINT *n );
 326
 327 extern BOOL TABLE_Exists( MSIDATABASE *db, LPWSTR name );
 328
 329 extern UINT read_raw_stream_data( MSIDATABASE*, LPCWSTR stname,
 330                               USHORT **pdata, UINT *psz );
 331
 332 /* transform functions */
 333 extern UINT msi_table_apply_transform( MSIDATABASE *db, IStorage *stg );
 334 extern UINT MSI_DatabaseApplyTransformW( MSIDATABASE *db,
 335                  LPCWSTR szTransformFile, int iErrorCond );
 336
 337 /* action internals */
 338 extern UINT MSI_InstallPackage( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 339 extern void ACTION_free_package_structures( MSIPACKAGE* );
 340 extern UINT ACTION_DialogBox( MSIPACKAGE*, LPCWSTR);
 341 extern UINT MSI_Sequence( MSIPACKAGE *package, LPCWSTR szTable, INT iSequenceMode );
 342
 343 /* record internals */
 344 extern UINT MSI_RecordSetIStream( MSIRECORD *, unsigned int, IStream *);
 345 extern UINT MSI_RecordGetIStream( MSIRECORD *, unsigned int, IStream **);
 346 extern const WCHAR *MSI_RecordGetString( MSIRECORD *, unsigned int );
 347 extern MSIRECORD *MSI_CreateRecord( unsigned int );
 348 extern UINT MSI_RecordSetInteger( MSIRECORD *, unsigned int, int );
 349 extern UINT MSI_RecordSetStringW( MSIRECORD *, unsigned int, LPCWSTR );
 350 extern UINT MSI_RecordSetStringA( MSIRECORD *, unsigned int, LPCSTR );
 351 extern BOOL MSI_RecordIsNull( MSIRECORD *, unsigned int );
 352 extern UINT MSI_RecordGetStringW( MSIRECORD * , unsigned int, LPWSTR, DWORD *);
 353 extern UINT MSI_RecordGetStringA( MSIRECORD *, unsigned int, LPSTR, DWORD *);
 354 extern int MSI_RecordGetInteger( MSIRECORD *, unsigned int );
 355 extern UINT MSI_RecordReadStream( MSIRECORD *, unsigned int, char *, DWORD *);
 356 extern unsigned int MSI_RecordGetFieldCount( MSIRECORD *rec );
 357 extern UINT MSI_RecordSetStreamW( MSIRECORD *, unsigned int, LPCWSTR );
 358 extern UINT MSI_RecordSetStreamA( MSIRECORD *, unsigned int, LPCSTR );
 359 extern UINT MSI_RecordDataSize( MSIRECORD *, unsigned int );
 360 extern UINT MSI_RecordStreamToFile( MSIRECORD *, unsigned int, LPCWSTR );
 361
 362 /* stream internals */
 363 extern UINT get_raw_stream( MSIHANDLE hdb, LPCWSTR stname, IStream **stm );
 364 extern UINT db_get_raw_stream( MSIDATABASE *db, LPCWSTR stname, IStream **stm );
 365 extern void enum_stream_names( IStorage *stg );
 366
 367 /* database internals */
 368 extern UINT MSI_OpenDatabaseW( LPCWSTR, LPCWSTR, MSIDATABASE ** );
 369 extern UINT MSI_DatabaseOpenViewW(MSIDATABASE *, LPCWSTR, MSIQUERY ** );
 370 extern UINT MSI_OpenQuery( MSIDATABASE *, MSIQUERY **, LPCWSTR, ... );
 371 typedef UINT (*record_func)( MSIRECORD *, LPVOID );
 372 extern UINT MSI_IterateRecords( MSIQUERY *, DWORD *, record_func, LPVOID );
 373 extern MSIRECORD *MSI_QueryGetRecord( MSIDATABASE *db, LPCWSTR query, ... );
 374 extern UINT MSI_DatabaseImport( MSIDATABASE *, LPCWSTR, LPCWSTR );
 375 extern UINT MSI_DatabaseExport( MSIDATABASE *, LPCWSTR, LPCWSTR, LPCWSTR );
 376 extern UINT MSI_DatabaseGetPrimaryKeys( MSIDATABASE *, LPCWSTR, MSIRECORD ** );
 377
 378 /* view internals */
 379 extern UINT MSI_ViewExecute( MSIQUERY*, MSIRECORD * );
 380 extern UINT MSI_ViewFetch( MSIQUERY*, MSIRECORD ** );
 381 extern UINT MSI_ViewClose( MSIQUERY* );
 382
 383 /* package internals */
 384 extern MSIPACKAGE *MSI_CreatePackage( MSIDATABASE * );
 385 extern UINT MSI_OpenPackageW( LPCWSTR szPackage, MSIPACKAGE ** );
 386 extern UINT MSI_SetTargetPathW( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 387 extern UINT MSI_SetPropertyW( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 388 extern INT MSI_ProcessMessage( MSIPACKAGE *, INSTALLMESSAGE, MSIRECORD * );
 389 extern UINT MSI_GetPropertyW( MSIPACKAGE *, LPCWSTR, LPWSTR, DWORD * );
 390 extern UINT MSI_GetPropertyA(MSIPACKAGE *, LPCSTR, LPSTR, DWORD* );
 391 extern MSICONDITION MSI_EvaluateConditionW( MSIPACKAGE *, LPCWSTR );
 392 extern UINT MSI_GetComponentStateW( MSIPACKAGE *, LPWSTR, INSTALLSTATE *, INSTALLSTATE * );
 393 extern UINT MSI_GetFeatureStateW( MSIPACKAGE *, LPWSTR, INSTALLSTATE *, INSTALLSTATE * );
 394 extern UINT WINAPI MSI_SetFeatureStateW(MSIPACKAGE*, LPCWSTR, INSTALLSTATE );
 395
 396 /* for deformating */
 397 extern UINT MSI_FormatRecordW( MSIPACKAGE *, MSIRECORD *, LPWSTR, DWORD * );
 398 extern UINT MSI_FormatRecordA( MSIPACKAGE *, MSIRECORD *, LPSTR, DWORD * );
 399
 400 /* registry data encoding/decoding functions */
 401 extern BOOL unsquash_guid(LPCWSTR in, LPWSTR out);
 402 extern BOOL squash_guid(LPCWSTR in, LPWSTR out);
 403 extern BOOL encode_base85_guid(GUID *,LPWSTR);
 404 extern BOOL decode_base85_guid(LPCWSTR,GUID*);
 405 extern UINT MSIREG_OpenUninstallKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 406 extern UINT MSIREG_OpenUserProductsKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 407 extern UINT MSIREG_OpenFeatures(HKEY* key);
 408 extern UINT MSIREG_OpenFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 409 extern UINT MSIREG_OpenComponents(HKEY* key);
 410 extern UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 411 extern UINT MSIREG_OpenComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 412 extern UINT MSIREG_OpenProductsKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 413 extern UINT MSIREG_OpenUserFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 414 extern UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 415 extern UINT MSIREG_OpenUpgradeCodesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 416 extern UINT MSIREG_OpenUserUpgradeCodesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 417
 418 extern LONG msi_reg_set_val_str( HKEY hkey, LPCWSTR name, LPCWSTR value );
 419 extern LONG msi_reg_set_val_multi_str( HKEY hkey, LPCWSTR name, LPCWSTR value );
 420 extern LONG msi_reg_set_val_dword( HKEY hkey, LPCWSTR name, DWORD val );
 421
 422 /* msi dialog interface */
 423 typedef UINT (*msi_dialog_event_handler)( MSIPACKAGE*, LPCWSTR, LPCWSTR, msi_dialog* );
 424 extern msi_dialog *msi_dialog_create( MSIPACKAGE*, LPCWSTR, msi_dialog_event_handler );
 425 extern UINT msi_dialog_run_message_loop( msi_dialog* );
 426 extern void msi_dialog_end_dialog( msi_dialog* );
 427 extern void msi_dialog_check_messages( HANDLE );
 428 extern void msi_dialog_do_preview( msi_dialog* );
 429 extern void msi_dialog_destroy( msi_dialog* );
 430 extern BOOL msi_dialog_register_class( void );
 431 extern void msi_dialog_unregister_class( void );
 432 extern void msi_dialog_handle_event( msi_dialog*, LPCWSTR, LPCWSTR, MSIRECORD * );
 433 extern UINT msi_dialog_reset( msi_dialog *dialog );
 434
 435 /* preview */
 436 extern MSIPREVIEW *MSI_EnableUIPreview( MSIDATABASE * );
 437 extern UINT MSI_PreviewDialogW( MSIPREVIEW *, LPCWSTR );
 438
 439 /* summary information */
 440 extern MSISUMMARYINFO *MSI_GetSummaryInformationW( MSIDATABASE *db, UINT uiUpdateCount );
 441 extern LPWSTR msi_suminfo_dup_string( MSISUMMARYINFO *si, UINT uiProperty );
 442
 443 /* undocumented functions */
 444 UINT WINAPI MsiCreateAndVerifyInstallerDirectory( DWORD );
 445 UINT WINAPI MsiDecomposeDescriptorW( LPCWSTR, LPWSTR, LPWSTR, LPWSTR, DWORD * );
 446 UINT WINAPI MsiDecomposeDescriptorA( LPCSTR, LPSTR, LPSTR, LPSTR, DWORD * );
 447 LANGID WINAPI MsiLoadStringW( MSIHANDLE, UINT, LPWSTR, int, LANGID );
 448 LANGID WINAPI MsiLoadStringA( MSIHANDLE, UINT, LPSTR, int, LANGID );
 449
 450 /* UI globals */
 451 extern INSTALLUILEVEL gUILevel;
 452 extern HWND gUIhwnd;
 453 extern INSTALLUI_HANDLERA gUIHandlerA;
 454 extern INSTALLUI_HANDLERW gUIHandlerW;
 455 extern DWORD gUIFilter;
 456 extern LPVOID gUIContext;
 457 extern WCHAR gszLogFile[MAX_PATH];
 458
 459 /* memory allocation macro functions */
 460 static inline void *msi_alloc( size_t len )
 461 {
 462     return HeapAlloc( GetProcessHeap(), 0, len );
 463 }
 464
 465 static inline void *msi_alloc_zero( size_t len )
 466 {
 467     return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, len );
 468 }
 469
 470 static inline void *msi_realloc( void *mem, size_t len )
 471 {
 472     return HeapReAlloc( GetProcessHeap(), 0, mem, len );
 473 }
 474
 475 static inline void *msi_realloc_zero( void *mem, size_t len )
 476 {
 477     return HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len );
 478 }
 479
 480 static inline BOOL msi_free( void *mem )
 481 {
 482     return HeapFree( GetProcessHeap(), 0, mem );
 483 }
 484
 485 inline static char *strdupWtoA( LPCWSTR str )
 486 {
 487     LPSTR ret = NULL;
 488     DWORD len;
 489
 490     if (!str) return ret;
 491     len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);
 492     ret = msi_alloc( len );
 493     if (ret)
 494         WideCharToMultiByte( CP_ACP, 0, str, -1, ret, len, NULL, NULL );
 495     return ret;
 496 }
 497
 498 inline static LPWSTR strdupAtoW( LPCSTR str )
 499 {
 500     LPWSTR ret = NULL;
 501     DWORD len;
 502
 503     if (!str) return ret;
 504     len = MultiByteToWideChar( CP_ACP, 0, str, -1, NULL, 0 );
 505     ret = msi_alloc( len * sizeof(WCHAR) );
 506     if (ret)
 507         MultiByteToWideChar( CP_ACP, 0, str, -1, ret, len );
 508     return ret;
 509 }
 510
 511 inline static LPWSTR strdupW( LPCWSTR src )
 512 {
 513     LPWSTR dest;
 514     if (!src) return NULL;
 515     dest = msi_alloc( (lstrlenW(src)+1)*sizeof(WCHAR) );
 516     if (dest)
 517         lstrcpyW(dest, src);
 518     return dest;
 519 }
 520
 521 #endif /* __WINE_MSI_PRIVATE__ */