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 /* Word Count masks */
  43 #define MSIWORDCOUNT_SHORTFILENAMES     0x0001
  44 #define MSIWORDCOUNT_COMPRESSED         0x0002
  45 #define MSIWORDCOUNT_ADMINISTRATIVE     0x0004
  46 #define MSIWORDCOUNT_PRIVILEGES         0x0008
  47
  48 #define MSITYPE_IS_BINARY(type) (((type) & ~MSITYPE_NULLABLE) == (MSITYPE_STRING|MSITYPE_VALID))
  49
  50 struct tagMSITABLE;
  51 typedef struct tagMSITABLE MSITABLE;
  52
  53 struct string_table;
  54 typedef struct string_table string_table;
  55
  56 struct tagMSIOBJECTHDR;
  57 typedef struct tagMSIOBJECTHDR MSIOBJECTHDR;
  58
  59 typedef VOID (*msihandledestructor)( MSIOBJECTHDR * );
  60
  61 struct tagMSIOBJECTHDR
  62 {
  63     UINT magic;
  64     UINT type;
  65     LONG refcount;
  66     msihandledestructor destructor;
  67 };
  68
  69 typedef struct tagMSIDATABASE
  70 {
  71     MSIOBJECTHDR hdr;
  72     IStorage *storage;
  73     string_table *strings;
  74     LPCWSTR mode;
  75     struct list tables;
  76     struct list transforms;
  77 } MSIDATABASE;
  78
  79 typedef struct tagMSIVIEW MSIVIEW;
  80
  81 typedef struct tagMSIQUERY
  82 {
  83     MSIOBJECTHDR hdr;
  84     MSIVIEW *view;
  85     UINT row;
  86     MSIDATABASE *db;
  87     struct list mem;
  88 } MSIQUERY;
  89
  90 /* maybe we can use a Variant instead of doing it ourselves? */
  91 typedef struct tagMSIFIELD
  92 {
  93     UINT type;
  94     union
  95     {
  96         INT iVal;
  97         LPWSTR szwVal;
  98         IStream *stream;
  99     } u;
 100 } MSIFIELD;
 101
 102 typedef struct tagMSIRECORD
 103 {
 104     MSIOBJECTHDR hdr;
 105     UINT count;       /* as passed to MsiCreateRecord */
 106     MSIFIELD fields[1]; /* nb. array size is count+1 */
 107 } MSIRECORD;
 108
 109 typedef void *MSIITERHANDLE;
 110
 111 typedef struct tagMSIVIEWOPS
 112 {
 113     /*
 114      * fetch_int - reads one integer from {row,col} in the table
 115      *
 116      *  This function should be called after the execute method.
 117      *  Data returned by the function should not change until
 118      *   close or delete is called.
 119      *  To get a string value, query the database's string table with
 120      *   the integer value returned from this function.
 121      */
 122     UINT (*fetch_int)( struct tagMSIVIEW *, UINT row, UINT col, UINT *val );
 123
 124     /*
 125      * fetch_stream - gets a stream from {row,col} in the table
 126      *
 127      *  This function is similar to fetch_int, except fetches a
 128      *    stream instead of an integer.
 129      */
 130     UINT (*fetch_stream)( struct tagMSIVIEW *, UINT row, UINT col, IStream **stm );
 131
 132     /*
 133      * get_int - sets one integer at {row,col} in the table
 134      *
 135      *  Similar semantics to fetch_int
 136      */
 137     UINT (*set_int)( struct tagMSIVIEW *, UINT row, UINT col, UINT val );
 138
 139     /*
 140      * Inserts a new row into the database from the records contents
 141      */
 142     UINT (*insert_row)( struct tagMSIVIEW *, MSIRECORD * );
 143
 144     /*
 145      * execute - loads the underlying data into memory so it can be read
 146      */
 147     UINT (*execute)( struct tagMSIVIEW *, MSIRECORD * );
 148
 149     /*
 150      * close - clears the data read by execute from memory
 151      */
 152     UINT (*close)( struct tagMSIVIEW * );
 153
 154     /*
 155      * get_dimensions - returns the number of rows or columns in a table.
 156      *
 157      *  The number of rows can only be queried after the execute method
 158      *   is called. The number of columns can be queried at any time.
 159      */
 160     UINT (*get_dimensions)( struct tagMSIVIEW *, UINT *rows, UINT *cols );
 161
 162     /*
 163      * get_column_info - returns the name and type of a specific column
 164      *
 165      *  The name is HeapAlloc'ed by this function and should be freed by
 166      *   the caller.
 167      *  The column information can be queried at any time.
 168      */
 169     UINT (*get_column_info)( struct tagMSIVIEW *, UINT n, LPWSTR *name, UINT *type );
 170
 171     /*
 172      * modify - not yet implemented properly
 173      */
 174     UINT (*modify)( struct tagMSIVIEW *, MSIMODIFY, MSIRECORD * );
 175
 176     /*
 177      * delete - destroys the structure completely
 178      */
 179     UINT (*delete)( struct tagMSIVIEW * );
 180
 181     /*
 182      * find_matching_rows - iterates through rows that match a value
 183      *
 184      * If the column type is a string then a string ID should be passed in.
 185      *  If the value to be looked up is an integer then no transformation of
 186      *  the input value is required, except if the column is a string, in which
 187      *  case a string ID should be passed in.
 188      * The handle is an input/output parameter that keeps track of the current
 189      *  position in the iteration. It must be initialised to zero before the
 190      *  first call and continued to be passed in to subsequent calls.
 191      */
 192     UINT (*find_matching_rows)( struct tagMSIVIEW *, UINT col, UINT val, UINT *row, MSIITERHANDLE *handle );
 193 } MSIVIEWOPS;
 194
 195 struct tagMSIVIEW
 196 {
 197     MSIOBJECTHDR hdr;
 198     const MSIVIEWOPS *ops;
 199 };
 200
 201 struct msi_dialog_tag;
 202 typedef struct msi_dialog_tag msi_dialog;
 203
 204 typedef struct tagMSIPACKAGE
 205 {
 206     MSIOBJECTHDR hdr;
 207     MSIDATABASE *db;
 208     struct list components;
 209     struct list features;
 210     struct list files;
 211     struct list tempfiles;
 212     struct list folders;
 213     LPWSTR ActionFormat;
 214     LPWSTR LastAction;
 215
 216     struct list classes;
 217     struct list extensions;
 218     struct list progids;
 219     struct list mimes;
 220     struct list appids;
 221
 222     struct tagMSISCRIPT *script;
 223
 224     struct list RunningActions;
 225
 226     LPWSTR PackagePath;
 227     LPWSTR ProductCode;
 228
 229     UINT CurrentInstallState;
 230     msi_dialog *dialog;
 231     LPWSTR next_dialog;
 232
 233     UINT WordCount;
 234
 235     struct list subscriptions;
 236 } MSIPACKAGE;
 237
 238 typedef struct tagMSIPREVIEW
 239 {
 240     MSIOBJECTHDR hdr;
 241     MSIPACKAGE *package;
 242     msi_dialog *dialog;
 243 } MSIPREVIEW;
 244
 245 #define MSI_MAX_PROPS 20
 246
 247 typedef struct tagMSISUMMARYINFO
 248 {
 249     MSIOBJECTHDR hdr;
 250     MSIDATABASE *db;
 251     DWORD update_count;
 252     PROPVARIANT property[MSI_MAX_PROPS];
 253 } MSISUMMARYINFO;
 254
 255 #define MSIHANDLETYPE_ANY 0
 256 #define MSIHANDLETYPE_DATABASE 1
 257 #define MSIHANDLETYPE_SUMMARYINFO 2
 258 #define MSIHANDLETYPE_VIEW 3
 259 #define MSIHANDLETYPE_RECORD 4
 260 #define MSIHANDLETYPE_PACKAGE 5
 261 #define MSIHANDLETYPE_PREVIEW 6
 262
 263 #define MSI_MAJORVERSION 3
 264 #define MSI_MINORVERSION 1
 265 #define MSI_BUILDNUMBER 4000
 266
 267 #define GUID_SIZE 39
 268
 269 #define MSIHANDLE_MAGIC 0x4d434923
 270 #define MSIMAXHANDLES 0xf0
 271
 272 DEFINE_GUID(CLSID_IMsiServer,   0x000C101C,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 273 DEFINE_GUID(CLSID_IMsiServerX1, 0x000C103E,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 274 DEFINE_GUID(CLSID_IMsiServerX2, 0x000C1090,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 275 DEFINE_GUID(CLSID_IMsiServerX3, 0x000C1094,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 276
 277 DEFINE_GUID(CLSID_IMsiServerMessage, 0x000C101D,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
 278
 279 /* handle unicode/ascii output in the Msi* API functions */
 280 typedef struct {
 281     BOOL unicode;
 282     union {
 283        LPSTR a;
 284        LPWSTR w;
 285     } str;
 286 } awstring;
 287
 288 typedef struct {
 289     BOOL unicode;
 290     union {
 291        LPCSTR a;
 292        LPCWSTR w;
 293     } str;
 294 } awcstring;
 295
 296 UINT msi_strcpy_to_awstring( LPCWSTR str, awstring *awbuf, DWORD *sz );
 297
 298 /* handle functions */
 299 extern void *msihandle2msiinfo(MSIHANDLE handle, UINT type);
 300 extern MSIHANDLE alloc_msihandle( MSIOBJECTHDR * );
 301 extern void *alloc_msiobject(UINT type, UINT size, msihandledestructor destroy );
 302 extern void msiobj_addref(MSIOBJECTHDR *);
 303 extern int msiobj_release(MSIOBJECTHDR *);
 304 extern void msiobj_lock(MSIOBJECTHDR *);
 305 extern void msiobj_unlock(MSIOBJECTHDR *);
 306
 307 extern void free_cached_tables( MSIDATABASE *db );
 308 extern void msi_free_transforms( MSIDATABASE *db );
 309 extern string_table *load_string_table( IStorage *stg );
 310 extern UINT MSI_CommitTables( MSIDATABASE *db );
 311 extern HRESULT init_string_table( IStorage *stg );
 312
 313
 314 /* string table functions */
 315 extern BOOL msi_addstring( string_table *st, UINT string_no, const CHAR *data, int len, UINT refcount );
 316 extern BOOL msi_addstringW( string_table *st, UINT string_no, const WCHAR *data, int len, UINT refcount );
 317 extern UINT msi_id2stringW( string_table *st, UINT string_no, LPWSTR buffer, UINT *sz );
 318 extern UINT msi_id2stringA( string_table *st, UINT string_no, LPSTR buffer, UINT *sz );
 319
 320 extern LPWSTR MSI_makestring( MSIDATABASE *db, UINT stringid);
 321 extern UINT msi_string2idW( string_table *st, LPCWSTR buffer, UINT *id );
 322 extern UINT msi_string2idA( string_table *st, LPCSTR str, UINT *id );
 323 extern string_table *msi_init_stringtable( int entries, UINT codepage );
 324 extern VOID msi_destroy_stringtable( string_table *st );
 325 extern UINT msi_string_count( string_table *st );
 326 extern UINT msi_id_refcount( string_table *st, UINT i );
 327 extern UINT msi_string_totalsize( string_table *st, UINT *last );
 328 extern UINT msi_strcmp( string_table *st, UINT lval, UINT rval, UINT *res );
 329 extern const WCHAR *msi_string_lookup_id( string_table *st, UINT id );
 330 extern UINT msi_string_get_codepage( string_table *st );
 331
 332
 333 extern UINT VIEW_find_column( MSIVIEW *view, LPCWSTR name, UINT *n );
 334
 335 extern BOOL TABLE_Exists( MSIDATABASE *db, LPWSTR name );
 336
 337 extern UINT read_raw_stream_data( MSIDATABASE*, LPCWSTR stname,
 338                               USHORT **pdata, UINT *psz );
 339
 340 /* transform functions */
 341 extern UINT msi_table_apply_transform( MSIDATABASE *db, IStorage *stg );
 342 extern UINT MSI_DatabaseApplyTransformW( MSIDATABASE *db,
 343                  LPCWSTR szTransformFile, int iErrorCond );
 344
 345 /* action internals */
 346 extern UINT MSI_InstallPackage( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 347 extern void ACTION_free_package_structures( MSIPACKAGE* );
 348 extern UINT ACTION_DialogBox( MSIPACKAGE*, LPCWSTR);
 349 extern UINT MSI_Sequence( MSIPACKAGE *package, LPCWSTR szTable, INT iSequenceMode );
 350 extern UINT MSI_SetFeatureStates( MSIPACKAGE *package );
 351
 352 /* record internals */
 353 extern UINT MSI_RecordSetIStream( MSIRECORD *, unsigned int, IStream *);
 354 extern UINT MSI_RecordGetIStream( MSIRECORD *, unsigned int, IStream **);
 355 extern const WCHAR *MSI_RecordGetString( MSIRECORD *, unsigned int );
 356 extern MSIRECORD *MSI_CreateRecord( unsigned int );
 357 extern UINT MSI_RecordSetInteger( MSIRECORD *, unsigned int, int );
 358 extern UINT MSI_RecordSetStringW( MSIRECORD *, unsigned int, LPCWSTR );
 359 extern UINT MSI_RecordSetStringA( MSIRECORD *, unsigned int, LPCSTR );
 360 extern BOOL MSI_RecordIsNull( MSIRECORD *, unsigned int );
 361 extern UINT MSI_RecordGetStringW( MSIRECORD * , unsigned int, LPWSTR, DWORD *);
 362 extern UINT MSI_RecordGetStringA( MSIRECORD *, unsigned int, LPSTR, DWORD *);
 363 extern int MSI_RecordGetInteger( MSIRECORD *, unsigned int );
 364 extern UINT MSI_RecordReadStream( MSIRECORD *, unsigned int, char *, DWORD *);
 365 extern unsigned int MSI_RecordGetFieldCount( MSIRECORD *rec );
 366 extern UINT MSI_RecordSetStreamW( MSIRECORD *, unsigned int, LPCWSTR );
 367 extern UINT MSI_RecordSetStreamA( MSIRECORD *, unsigned int, LPCSTR );
 368 extern UINT MSI_RecordDataSize( MSIRECORD *, unsigned int );
 369 extern UINT MSI_RecordStreamToFile( MSIRECORD *, unsigned int, LPCWSTR );
 370
 371 /* stream internals */
 372 extern UINT get_raw_stream( MSIHANDLE hdb, LPCWSTR stname, IStream **stm );
 373 extern UINT db_get_raw_stream( MSIDATABASE *db, LPCWSTR stname, IStream **stm );
 374 extern void enum_stream_names( IStorage *stg );
 375
 376 /* database internals */
 377 extern UINT MSI_OpenDatabaseW( LPCWSTR, LPCWSTR, MSIDATABASE ** );
 378 extern UINT MSI_DatabaseOpenViewW(MSIDATABASE *, LPCWSTR, MSIQUERY ** );
 379 extern UINT MSI_OpenQuery( MSIDATABASE *, MSIQUERY **, LPCWSTR, ... );
 380 typedef UINT (*record_func)( MSIRECORD *, LPVOID );
 381 extern UINT MSI_IterateRecords( MSIQUERY *, DWORD *, record_func, LPVOID );
 382 extern MSIRECORD *MSI_QueryGetRecord( MSIDATABASE *db, LPCWSTR query, ... );
 383 extern UINT MSI_DatabaseImport( MSIDATABASE *, LPCWSTR, LPCWSTR );
 384 extern UINT MSI_DatabaseExport( MSIDATABASE *, LPCWSTR, LPCWSTR, LPCWSTR );
 385 extern UINT MSI_DatabaseGetPrimaryKeys( MSIDATABASE *, LPCWSTR, MSIRECORD ** );
 386
 387 /* view internals */
 388 extern UINT MSI_ViewExecute( MSIQUERY*, MSIRECORD * );
 389 extern UINT MSI_ViewFetch( MSIQUERY*, MSIRECORD ** );
 390 extern UINT MSI_ViewClose( MSIQUERY* );
 391
 392 /* install internals */
 393 extern UINT MSI_SetInstallLevel( MSIPACKAGE *package, int iInstallLevel );
 394
 395 /* package internals */
 396 extern MSIPACKAGE *MSI_CreatePackage( MSIDATABASE * );
 397 extern UINT MSI_OpenPackageW( LPCWSTR szPackage, MSIPACKAGE ** );
 398 extern UINT MSI_SetTargetPathW( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 399 extern UINT MSI_SetPropertyW( MSIPACKAGE *, LPCWSTR, LPCWSTR );
 400 extern INT MSI_ProcessMessage( MSIPACKAGE *, INSTALLMESSAGE, MSIRECORD * );
 401 extern UINT MSI_GetPropertyW( MSIPACKAGE *, LPCWSTR, LPWSTR, DWORD * );
 402 extern UINT MSI_GetPropertyA(MSIPACKAGE *, LPCSTR, LPSTR, DWORD* );
 403 extern MSICONDITION MSI_EvaluateConditionW( MSIPACKAGE *, LPCWSTR );
 404 extern UINT MSI_GetComponentStateW( MSIPACKAGE *, LPCWSTR, INSTALLSTATE *, INSTALLSTATE * );
 405 extern UINT MSI_GetFeatureStateW( MSIPACKAGE *, LPCWSTR, INSTALLSTATE *, INSTALLSTATE * );
 406 extern UINT WINAPI MSI_SetFeatureStateW(MSIPACKAGE*, LPCWSTR, INSTALLSTATE );
 407
 408 /* for deformating */
 409 extern UINT MSI_FormatRecordW( MSIPACKAGE *, MSIRECORD *, LPWSTR, DWORD * );
 410 extern UINT MSI_FormatRecordA( MSIPACKAGE *, MSIRECORD *, LPSTR, DWORD * );
 411
 412 /* registry data encoding/decoding functions */
 413 extern BOOL unsquash_guid(LPCWSTR in, LPWSTR out);
 414 extern BOOL squash_guid(LPCWSTR in, LPWSTR out);
 415 extern BOOL encode_base85_guid(GUID *,LPWSTR);
 416 extern BOOL decode_base85_guid(LPCWSTR,GUID*);
 417 extern UINT MSIREG_OpenUninstallKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 418 extern UINT MSIREG_OpenUserProductsKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 419 extern UINT MSIREG_OpenFeatures(HKEY* key);
 420 extern UINT MSIREG_OpenFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 421 extern UINT MSIREG_OpenComponents(HKEY* key);
 422 extern UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 423 extern UINT MSIREG_OpenComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 424 extern UINT MSIREG_OpenProductsKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 425 extern UINT MSIREG_OpenUserFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 426 extern UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create);
 427 extern UINT MSIREG_OpenUpgradeCodesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 428 extern UINT MSIREG_OpenUserUpgradeCodesKey(LPCWSTR szProduct, HKEY* key, BOOL create);
 429
 430 extern LPWSTR msi_reg_get_val_str( HKEY hkey, LPCWSTR name );
 431 extern BOOL msi_reg_get_val_dword( HKEY hkey, LPCWSTR name, DWORD *val);
 432
 433 extern DWORD msi_version_str_to_dword(LPCWSTR p);
 434 extern LPWSTR msi_version_dword_to_str(DWORD version);
 435
 436 extern LONG msi_reg_set_val_str( HKEY hkey, LPCWSTR name, LPCWSTR value );
 437 extern LONG msi_reg_set_val_multi_str( HKEY hkey, LPCWSTR name, LPCWSTR value );
 438 extern LONG msi_reg_set_val_dword( HKEY hkey, LPCWSTR name, DWORD val );
 439 extern LONG msi_reg_set_subkey_val( HKEY hkey, LPCWSTR path, LPCWSTR name, LPCWSTR val );
 440
 441 /* msi dialog interface */
 442 typedef UINT (*msi_dialog_event_handler)( MSIPACKAGE*, LPCWSTR, LPCWSTR, msi_dialog* );
 443 extern msi_dialog *msi_dialog_create( MSIPACKAGE*, LPCWSTR, msi_dialog_event_handler );
 444 extern UINT msi_dialog_run_message_loop( msi_dialog* );
 445 extern void msi_dialog_end_dialog( msi_dialog* );
 446 extern void msi_dialog_check_messages( HANDLE );
 447 extern void msi_dialog_do_preview( msi_dialog* );
 448 extern void msi_dialog_destroy( msi_dialog* );
 449 extern BOOL msi_dialog_register_class( void );
 450 extern void msi_dialog_unregister_class( void );
 451 extern void msi_dialog_handle_event( msi_dialog*, LPCWSTR, LPCWSTR, MSIRECORD * );
 452 extern UINT msi_dialog_reset( msi_dialog *dialog );
 453
 454 /* preview */
 455 extern MSIPREVIEW *MSI_EnableUIPreview( MSIDATABASE * );
 456 extern UINT MSI_PreviewDialogW( MSIPREVIEW *, LPCWSTR );
 457
 458 /* summary information */
 459 extern MSISUMMARYINFO *MSI_GetSummaryInformationW( MSIDATABASE *db, UINT uiUpdateCount );
 460 extern LPWSTR msi_suminfo_dup_string( MSISUMMARYINFO *si, UINT uiProperty );
 461
 462 /* undocumented functions */
 463 UINT WINAPI MsiCreateAndVerifyInstallerDirectory( DWORD );
 464 UINT WINAPI MsiDecomposeDescriptorW( LPCWSTR, LPWSTR, LPWSTR, LPWSTR, DWORD * );
 465 UINT WINAPI MsiDecomposeDescriptorA( LPCSTR, LPSTR, LPSTR, LPSTR, DWORD * );
 466 LANGID WINAPI MsiLoadStringW( MSIHANDLE, UINT, LPWSTR, int, LANGID );
 467 LANGID WINAPI MsiLoadStringA( MSIHANDLE, UINT, LPSTR, int, LANGID );
 468
 469 /* UI globals */
 470 extern INSTALLUILEVEL gUILevel;
 471 extern HWND gUIhwnd;
 472 extern INSTALLUI_HANDLERA gUIHandlerA;
 473 extern INSTALLUI_HANDLERW gUIHandlerW;
 474 extern DWORD gUIFilter;
 475 extern LPVOID gUIContext;
 476 extern WCHAR gszLogFile[MAX_PATH];
 477 extern HINSTANCE msi_hInstance;
 478
 479 /* memory allocation macro functions */
 480 static inline void *msi_alloc( size_t len )
 481 {
 482     return HeapAlloc( GetProcessHeap(), 0, len );
 483 }
 484
 485 static inline void *msi_alloc_zero( size_t len )
 486 {
 487     return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, len );
 488 }
 489
 490 static inline void *msi_realloc( void *mem, size_t len )
 491 {
 492     return HeapReAlloc( GetProcessHeap(), 0, mem, len );
 493 }
 494
 495 static inline void *msi_realloc_zero( void *mem, size_t len )
 496 {
 497     return HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len );
 498 }
 499
 500 static inline BOOL msi_free( void *mem )
 501 {
 502     return HeapFree( GetProcessHeap(), 0, mem );
 503 }
 504
 505 inline static char *strdupWtoA( LPCWSTR str )
 506 {
 507     LPSTR ret = NULL;
 508     DWORD len;
 509
 510     if (!str) return ret;
 511     len = WideCharToMultiByte( CP_ACP, 0, str, -1, NULL, 0, NULL, NULL);
 512     ret = msi_alloc( len );
 513     if (ret)
 514         WideCharToMultiByte( CP_ACP, 0, str, -1, ret, len, NULL, NULL );
 515     return ret;
 516 }
 517
 518 inline static LPWSTR strdupAtoW( LPCSTR str )
 519 {
 520     LPWSTR ret = NULL;
 521     DWORD len;
 522
 523     if (!str) return ret;
 524     len = MultiByteToWideChar( CP_ACP, 0, str, -1, NULL, 0 );
 525     ret = msi_alloc( len * sizeof(WCHAR) );
 526     if (ret)
 527         MultiByteToWideChar( CP_ACP, 0, str, -1, ret, len );
 528     return ret;
 529 }
 530
 531 inline static LPWSTR strdupW( LPCWSTR src )
 532 {
 533     LPWSTR dest;
 534     if (!src) return NULL;
 535     dest = msi_alloc( (lstrlenW(src)+1)*sizeof(WCHAR) );
 536     if (dest)
 537         lstrcpyW(dest, src);
 538     return dest;
 539 }
 540
 541 #endif /* __WINE_MSI_PRIVATE__ */