dlls/msi/registry.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2005 Mike McCormack for CodeWeavers
   5  * Copyright 2005 Aric Stewart for CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <stdarg.h>
  23
  24 #define COBJMACROS
  25 #define NONAMELESSUNION
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winreg.h"
  30 #include "winnls.h"
  31 #include "shlwapi.h"
  32 #include "wine/debug.h"
  33 #include "msi.h"
  34 #include "msipriv.h"
  35 #include "wincrypt.h"
  36 #include "wine/unicode.h"
  37 #include "winver.h"
  38 #include "winuser.h"
  39 #include "sddl.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(msi);
  42
  43
  44 /*
  45  * This module will be all the helper functions for registry access by the
  46  * installer bits.
  47  */
  48 static const WCHAR szUserFeatures_fmt[] = {
  49 'S','o','f','t','w','a','r','e','\\',
  50 'M','i','c','r','o','s','o','f','t','\\',
  51 'I','n','s','t','a','l','l','e','r','\\',
  52 'F','e','a','t','u','r','e','s','\\',
  53 '%','s',0};
  54
  55 static const WCHAR szUserDataFeatures_fmt[] = {
  56 'S','o','f','t','w','a','r','e','\\',
  57 'M','i','c','r','o','s','o','f','t','\\',
  58 'W','i','n','d','o','w','s','\\',
  59 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  60 'I','n','s','t','a','l','l','e','r','\\',
  61 'U','s','e','r','D','a','t','a','\\',
  62 '%','s','\\','P','r','o','d','u','c','t','s','\\',
  63 '%','s','\\','F','e','a','t','u','r','e','s',0};
  64
  65 static const WCHAR szInstaller_Features_fmt[] = {
  66 'S','o','f','t','w','a','r','e','\\',
  67 'M','i','c','r','o','s','o','f','t','\\',
  68 'W','i','n','d','o','w','s','\\',
  69 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  70 'I','n','s','t','a','l','l','e','r','\\',
  71 'F','e','a','t','u','r','e','s','\\',
  72 '%','s',0};
  73
  74 static const WCHAR szInstaller_Components[] = {
  75 'S','o','f','t','w','a','r','e','\\',
  76 'M','i','c','r','o','s','o','f','t','\\',
  77 'W','i','n','d','o','w','s','\\',
  78 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  79 'I','n','s','t','a','l','l','e','r','\\',
  80 'C','o','m','p','o','n','e','n','t','s',0 };
  81
  82 static const WCHAR szUser_Components_fmt[] = {
  83 'S','o','f','t','w','a','r','e','\\',
  84 'M','i','c','r','o','s','o','f','t','\\',
  85 'I','n','s','t','a','l','l','e','r','\\',
  86 'C','o','m','p','o','n','e','n','t','s','\\',
  87 '%','s',0};
  88
  89 static const WCHAR szUserDataComp_fmt[] = {
  90 'S','o','f','t','w','a','r','e','\\',
  91 'M','i','c','r','o','s','o','f','t','\\',
  92 'W','i','n','d','o','w','s','\\',
  93 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  94 'I','n','s','t','a','l','l','e','r','\\',
  95 'U','s','e','r','D','a','t','a','\\',
  96 '%','s','\\','C','o','m','p','o','n','e','n','t','s','\\','%','s',0};
  97
  98 static const WCHAR szUninstall_fmt[] = {
  99 'S','o','f','t','w','a','r','e','\\',
 100 'M','i','c','r','o','s','o','f','t','\\',
 101 'W','i','n','d','o','w','s','\\',
 102 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 103 'U','n','i','n','s','t','a','l','l','\\',
 104 '%','s',0 };
 105
 106 static const WCHAR szUserProduct_fmt[] = {
 107 'S','o','f','t','w','a','r','e','\\',
 108 'M','i','c','r','o','s','o','f','t','\\',
 109 'I','n','s','t','a','l','l','e','r','\\',
 110 'P','r','o','d','u','c','t','s','\\',
 111 '%','s',0};
 112
 113 static const WCHAR szUserPatch_fmt[] = {
 114 'S','o','f','t','w','a','r','e','\\',
 115 'M','i','c','r','o','s','o','f','t','\\',
 116 'I','n','s','t','a','l','l','e','r','\\',
 117 'P','a','t','c','h','e','s','\\',
 118 '%','s',0};
 119
 120 static const WCHAR szInstaller_Products[] = {
 121 'S','o','f','t','w','a','r','e','\\',
 122 'M','i','c','r','o','s','o','f','t','\\',
 123 'W','i','n','d','o','w','s','\\',
 124 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 125 'I','n','s','t','a','l','l','e','r','\\',
 126 'P','r','o','d','u','c','t','s',0};
 127
 128 static const WCHAR szInstaller_Products_fmt[] = {
 129 'S','o','f','t','w','a','r','e','\\',
 130 'M','i','c','r','o','s','o','f','t','\\',
 131 'W','i','n','d','o','w','s','\\',
 132 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 133 'I','n','s','t','a','l','l','e','r','\\',
 134 'P','r','o','d','u','c','t','s','\\',
 135 '%','s',0};
 136
 137 static const WCHAR szInstaller_Patches_fmt[] = {
 138 'S','o','f','t','w','a','r','e','\\',
 139 'M','i','c','r','o','s','o','f','t','\\',
 140 'W','i','n','d','o','w','s','\\',
 141 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 142 'I','n','s','t','a','l','l','e','r','\\',
 143 'P','a','t','c','h','e','s','\\',
 144 '%','s',0};
 145
 146 static const WCHAR szInstaller_UpgradeCodes_fmt[] = {
 147 'S','o','f','t','w','a','r','e','\\',
 148 'M','i','c','r','o','s','o','f','t','\\',
 149 'W','i','n','d','o','w','s','\\',
 150 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 151 'I','n','s','t','a','l','l','e','r','\\',
 152 'U','p','g','r','a','d','e','C','o','d','e','s','\\',
 153 '%','s',0};
 154
 155 static const WCHAR szInstaller_UserUpgradeCodes_fmt[] = {
 156 'S','o','f','t','w','a','r','e','\\',
 157 'M','i','c','r','o','s','o','f','t','\\',
 158 'I','n','s','t','a','l','l','e','r','\\',
 159 'U','p','g','r','a','d','e','C','o','d','e','s','\\',
 160 '%','s',0};
 161
 162 static const WCHAR szUserDataProd_fmt[] = {
 163 'S','o','f','t','w','a','r','e','\\',
 164 'M','i','c','r','o','s','o','f','t','\\',
 165 'W','i','n','d','o','w','s','\\',
 166 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 167 'I','n','s','t','a','l','l','e','r','\\',
 168 'U','s','e','r','D','a','t','a','\\',
 169 '%','s','\\','P','r','o','d','u','c','t','s','\\','%','s',0};
 170
 171 static const WCHAR szInstallProperties_fmt[] = {
 172 'S','o','f','t','w','a','r','e','\\',
 173 'M','i','c','r','o','s','o','f','t','\\',
 174 'W','i','n','d','o','w','s','\\',
 175 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 176 'I','n','s','t','a','l','l','e','r','\\',
 177 'U','s','e','r','D','a','t','a','\\',
 178 '%','s','\\','P','r','o','d','u','c','t','s','\\','%','s','\\',
 179 'I','n','s','t','a','l','l','P','r','o','p','e','r','t','i','e','s',0};
 180
 181 static const WCHAR szInstaller_LocalSystemProductCodes_fmt[] = {
 182 'S','o','f','t','w','a','r','e','\\',
 183 'M','i','c','r','o','s','o','f','t','\\',
 184 'W','i','n','d','o','w','s','\\',
 185 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 186 'I','n','s','t','a','l','l','e','r','\\',
 187 'U','s','e','r','D','a','t','a','\\',
 188 'S','-','1','-','5','-','1','8','\\','P','r','o','d','u','c','t','s','\\',
 189 '%','s','\\','I','n','s','t','a','l','l','P','r','o','p','e','r','t','i','e','s',0};
 190
 191 static const WCHAR szInstaller_LocalSystemComponent_fmt[] = {
 192 'S','o','f','t','w','a','r','e','\\',
 193 'M','i','c','r','o','s','o','f','t','\\',
 194 'W','i','n','d','o','w','s','\\',
 195 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 196 'I','n','s','t','a','l','l','e','r','\\',
 197 'U','s','e','r','D','a','t','a','\\',
 198 'S','-','1','-','5','-','1','8','\\',
 199 'C','o','m','p','o','n','e','n','t','s','\\','%','s',0};
 200
 201 static const WCHAR szInstaller_LocalClassesProd_fmt[] = {
 202 'S','o','f','t','w','a','r','e','\\',
 203 'C','l','a','s','s','e','s','\\',
 204 'I','n','s','t','a','l','l','e','r','\\',
 205 'P','r','o','d','u','c','t','s','\\','%','s',0};
 206
 207 static const WCHAR szInstaller_LocalClassesFeat_fmt[] = {
 208 'S','o','f','t','w','a','r','e','\\',
 209 'C','l','a','s','s','e','s','\\',
 210 'I','n','s','t','a','l','l','e','r','\\',
 211 'F','e','a','t','u','r','e','s','\\','%','s',0};
 212
 213 static const WCHAR szInstaller_LocalManagedProd_fmt[] = {
 214 'S','o','f','t','w','a','r','e','\\',
 215 'M','i','c','r','o','s','o','f','t','\\',
 216 'W','i','n','d','o','w','s','\\',
 217 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 218 'I','n','s','t','a','l','l','e','r','\\',
 219 'M','a','n','a','g','e','d','\\','%','s','\\',
 220 'I','n','s','t','a','l','l','e','r','\\',
 221 'P','r','o','d','u','c','t','s','\\','%','s',0};
 222
 223 static const WCHAR szInstaller_LocalManagedFeat_fmt[] = {
 224 'S','o','f','t','w','a','r','e','\\',
 225 'M','i','c','r','o','s','o','f','t','\\',
 226 'W','i','n','d','o','w','s','\\',
 227 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 228 'I','n','s','t','a','l','l','e','r','\\',
 229 'M','a','n','a','g','e','d','\\','%','s','\\',
 230 'I','n','s','t','a','l','l','e','r','\\',
 231 'F','e','a','t','u','r','e','s','\\','%','s',0};
 232
 233 static const WCHAR szInstaller_ClassesUpgrade_fmt[] = {
 234 'I','n','s','t','a','l','l','e','r','\\',
 235 'U','p','g','r','a','d','e','C','o','d','e','s','\\',
 236 '%','s',0};
 237
 238 static const WCHAR localsid[] = {'S','-','1','-','5','-','1','8',0};
 239
 240 BOOL unsquash_guid(LPCWSTR in, LPWSTR out)
 241 {
 242     DWORD i,n=0;
 243
 244     out[n++]='{';
 245     for(i=0; i<8; i++)
 246         out[n++] = in[7-i];
 247     out[n++]='-';
 248     for(i=0; i<4; i++)
 249         out[n++] = in[11-i];
 250     out[n++]='-';
 251     for(i=0; i<4; i++)
 252         out[n++] = in[15-i];
 253     out[n++]='-';
 254     for(i=0; i<2; i++)
 255     {
 256         out[n++] = in[17+i*2];
 257         out[n++] = in[16+i*2];
 258     }
 259     out[n++]='-';
 260     for( ; i<8; i++)
 261     {
 262         out[n++] = in[17+i*2];
 263         out[n++] = in[16+i*2];
 264     }
 265     out[n++]='}';
 266     out[n]=0;
 267     return TRUE;
 268 }
 269
 270 BOOL squash_guid(LPCWSTR in, LPWSTR out)
 271 {
 272     DWORD i,n=1;
 273     GUID guid;
 274
 275     out[0] = 0;
 276
 277     if (FAILED(CLSIDFromString((LPOLESTR)in, &guid)))
 278         return FALSE;
 279
 280     for(i=0; i<8; i++)
 281         out[7-i] = in[n++];
 282     n++;
 283     for(i=0; i<4; i++)
 284         out[11-i] = in[n++];
 285     n++;
 286     for(i=0; i<4; i++)
 287         out[15-i] = in[n++];
 288     n++;
 289     for(i=0; i<2; i++)
 290     {
 291         out[17+i*2] = in[n++];
 292         out[16+i*2] = in[n++];
 293     }
 294     n++;
 295     for( ; i<8; i++)
 296     {
 297         out[17+i*2] = in[n++];
 298         out[16+i*2] = in[n++];
 299     }
 300     out[32]=0;
 301     return TRUE;
 302 }
 303
 304
 305 /* tables for encoding and decoding base85 */
 306 static const unsigned char table_dec85[0x80] = {
 307 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 308 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 309 0xff,0x00,0xff,0xff,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0xff,
 310 0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,0x14,0x15,0xff,0xff,0xff,0x16,0xff,0x17,
 311 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
 312 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,0xff,0x34,0x35,0x36,
 313 0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,0x44,0x45,0x46,
 314 0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0xff,0x53,0x54,0xff,
 315 };
 316
 317 static const char table_enc85[] =
 318 "!$%&'()*+,-.0123456789=?@ABCDEFGHIJKLMNO"
 319 "PQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwx"
 320 "yz{}~";
 321
 322 /*
 323  *  Converts a base85 encoded guid into a GUID pointer
 324  *  Base85 encoded GUIDs should be 20 characters long.
 325  *
 326  *  returns TRUE if successful, FALSE if not
 327  */
 328 BOOL decode_base85_guid( LPCWSTR str, GUID *guid )
 329 {
 330     DWORD i, val = 0, base = 1, *p;
 331
 332     if (!str)
 333         return FALSE;
 334
 335     p = (DWORD*) guid;
 336     for( i=0; i<20; i++ )
 337     {
 338         if( (i%5) == 0 )
 339         {
 340             val = 0;
 341             base = 1;
 342         }
 343         val += table_dec85[str[i]] * base;
 344         if( str[i] >= 0x80 )
 345             return FALSE;
 346         if( table_dec85[str[i]] == 0xff )
 347             return FALSE;
 348         if( (i%5) == 4 )
 349             p[i/5] = val;
 350         base *= 85;
 351     }
 352     return TRUE;
 353 }
 354
 355 /*
 356  *  Encodes a base85 guid given a GUID pointer
 357  *  Caller should provide a 21 character buffer for the encoded string.
 358  *
 359  *  returns TRUE if successful, FALSE if not
 360  */
 361 BOOL encode_base85_guid( GUID *guid, LPWSTR str )
 362 {
 363     unsigned int x, *p, i;
 364
 365     p = (unsigned int*) guid;
 366     for( i=0; i<4; i++ )
 367     {
 368         x = p[i];
 369         *str++ = table_enc85[x%85];
 370         x = x/85;
 371         *str++ = table_enc85[x%85];
 372         x = x/85;
 373         *str++ = table_enc85[x%85];
 374         x = x/85;
 375         *str++ = table_enc85[x%85];
 376         x = x/85;
 377         *str++ = table_enc85[x%85];
 378     }
 379     *str = 0;
 380
 381     return TRUE;
 382 }
 383
 384 DWORD msi_version_str_to_dword(LPCWSTR p)
 385 {
 386     DWORD major, minor = 0, build = 0, version = 0;
 387
 388     if (!p)
 389         return version;
 390
 391     major = atoiW(p);
 392
 393     p = strchrW(p, '.');
 394     if (p)
 395     {
 396         minor = atoiW(p+1);
 397         p = strchrW(p+1, '.');
 398         if (p)
 399             build = atoiW(p+1);
 400     }
 401
 402     return MAKELONG(build, MAKEWORD(minor, major));
 403 }
 404
 405 LPWSTR msi_version_dword_to_str(DWORD version)
 406 {
 407     static const WCHAR fmt[] = { '%','u','.','%','u','.','%','u',0 };
 408     LPWSTR str = msi_alloc(20);
 409     sprintfW(str, fmt,
 410              (version&0xff000000)>>24,
 411              (version&0x00ff0000)>>16,
 412               version&0x0000ffff);
 413     return str;
 414 }
 415
 416 LONG msi_reg_set_val_str( HKEY hkey, LPCWSTR name, LPCWSTR value )
 417 {
 418     static const WCHAR emptyW[] = {0};
 419     DWORD len;
 420     if (!value) value = emptyW;
 421     len = (lstrlenW(value) + 1) * sizeof (WCHAR);
 422     return RegSetValueExW( hkey, name, 0, REG_SZ, (const BYTE *)value, len );
 423 }
 424
 425 LONG msi_reg_set_val_multi_str( HKEY hkey, LPCWSTR name, LPCWSTR value )
 426 {
 427     LPCWSTR p = value;
 428     while (*p) p += lstrlenW(p) + 1;
 429     return RegSetValueExW( hkey, name, 0, REG_MULTI_SZ,
 430                            (const BYTE *)value, (p + 1 - value) * sizeof(WCHAR) );
 431 }
 432
 433 LONG msi_reg_set_val_dword( HKEY hkey, LPCWSTR name, DWORD val )
 434 {
 435     return RegSetValueExW( hkey, name, 0, REG_DWORD, (LPBYTE)&val, sizeof (DWORD) );
 436 }
 437
 438 LONG msi_reg_set_subkey_val( HKEY hkey, LPCWSTR path, LPCWSTR name, LPCWSTR val )
 439 {
 440     HKEY hsubkey = 0;
 441     LONG r;
 442
 443     r = RegCreateKeyW( hkey, path, &hsubkey );
 444     if (r != ERROR_SUCCESS)
 445         return r;
 446     r = msi_reg_set_val_str( hsubkey, name, val );
 447     RegCloseKey( hsubkey );
 448     return r;
 449 }
 450
 451 LPWSTR msi_reg_get_val_str( HKEY hkey, LPCWSTR name )
 452 {
 453     DWORD len = 0;
 454     LPWSTR val;
 455     LONG r;
 456
 457     r = RegQueryValueExW(hkey, name, NULL, NULL, NULL, &len);
 458     if (r != ERROR_SUCCESS)
 459         return NULL;
 460
 461     len += sizeof (WCHAR);
 462     val = msi_alloc( len );
 463     if (!val)
 464         return NULL;
 465     val[0] = 0;
 466     RegQueryValueExW(hkey, name, NULL, NULL, (LPBYTE) val, &len);
 467     return val;
 468 }
 469
 470 BOOL msi_reg_get_val_dword( HKEY hkey, LPCWSTR name, DWORD *val)
 471 {
 472     DWORD type, len = sizeof (DWORD);
 473     LONG r = RegQueryValueExW(hkey, name, NULL, &type, (LPBYTE) val, &len);
 474     return r == ERROR_SUCCESS && type == REG_DWORD;
 475 }
 476
 477 static UINT get_user_sid(LPWSTR *usersid)
 478 {
 479     HANDLE token;
 480     BYTE buf[1024];
 481     DWORD size;
 482     PTOKEN_USER user;
 483
 484     if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &token))
 485         return ERROR_FUNCTION_FAILED;
 486
 487     size = sizeof(buf);
 488     if (!GetTokenInformation(token, TokenUser, (void *)buf, size, &size)) {
 489         CloseHandle(token);
 490         return ERROR_FUNCTION_FAILED;
 491     }
 492
 493     user = (PTOKEN_USER)buf;
 494     if (!ConvertSidToStringSidW(user->User.Sid, usersid)) {
 495         CloseHandle(token);
 496         return ERROR_FUNCTION_FAILED;
 497     }
 498     CloseHandle(token);
 499     return ERROR_SUCCESS;
 500 }
 501
 502 UINT MSIREG_OpenUninstallKey(LPCWSTR szProduct, HKEY* key, BOOL create)
 503 {
 504     UINT rc;
 505     WCHAR keypath[0x200];
 506     TRACE("%s\n",debugstr_w(szProduct));
 507
 508     sprintfW(keypath,szUninstall_fmt,szProduct);
 509
 510     if (create)
 511         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 512     else
 513         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 514
 515     return rc;
 516 }
 517
 518 UINT MSIREG_DeleteUninstallKey(LPCWSTR szProduct)
 519 {
 520     WCHAR keypath[0x200];
 521     TRACE("%s\n",debugstr_w(szProduct));
 522
 523     sprintfW(keypath,szUninstall_fmt,szProduct);
 524
 525     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
 526 }
 527
 528 UINT MSIREG_OpenProductKey(LPCWSTR szProduct, MSIINSTALLCONTEXT context,
 529                            HKEY *key, BOOL create)
 530 {
 531     UINT r;
 532     LPWSTR usersid;
 533     HKEY root = HKEY_LOCAL_MACHINE;
 534     WCHAR squished_pc[GUID_SIZE];
 535     WCHAR keypath[MAX_PATH];
 536
 537     TRACE("(%s, %d, %d)\n", debugstr_w(szProduct), context, create);
 538
 539     if (!squash_guid(szProduct, squished_pc))
 540         return ERROR_FUNCTION_FAILED;
 541
 542     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 543
 544     if (context == MSIINSTALLCONTEXT_MACHINE)
 545     {
 546         sprintfW(keypath, szInstaller_LocalClassesProd_fmt, squished_pc);
 547     }
 548     else if (context == MSIINSTALLCONTEXT_USERUNMANAGED)
 549     {
 550         root = HKEY_CURRENT_USER;
 551         sprintfW(keypath, szUserProduct_fmt, squished_pc);
 552     }
 553     else
 554     {
 555         r = get_user_sid(&usersid);
 556         if (r != ERROR_SUCCESS || !usersid)
 557         {
 558             ERR("Failed to retrieve user SID: %d\n", r);
 559             return r;
 560         }
 561
 562         sprintfW(keypath, szInstaller_LocalManagedProd_fmt, usersid, squished_pc);
 563         LocalFree(usersid);
 564     }
 565
 566     if (create)
 567         return RegCreateKeyW(root, keypath, key);
 568
 569     return RegOpenKeyW(root, keypath, key);
 570 }
 571
 572 UINT MSIREG_DeleteUserProductKey(LPCWSTR szProduct)
 573 {
 574     WCHAR squished_pc[GUID_SIZE];
 575     WCHAR keypath[0x200];
 576
 577     TRACE("%s\n",debugstr_w(szProduct));
 578     if (!squash_guid(szProduct,squished_pc))
 579         return ERROR_FUNCTION_FAILED;
 580     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 581
 582     sprintfW(keypath,szUserProduct_fmt,squished_pc);
 583
 584     return RegDeleteTreeW(HKEY_CURRENT_USER, keypath);
 585 }
 586
 587 UINT MSIREG_OpenUserPatchesKey(LPCWSTR szPatch, HKEY* key, BOOL create)
 588 {
 589     UINT rc;
 590     WCHAR squished_pc[GUID_SIZE];
 591     WCHAR keypath[0x200];
 592
 593     TRACE("%s\n",debugstr_w(szPatch));
 594     if (!squash_guid(szPatch,squished_pc))
 595         return ERROR_FUNCTION_FAILED;
 596     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 597
 598     sprintfW(keypath,szUserPatch_fmt,squished_pc);
 599
 600     if (create)
 601         rc = RegCreateKeyW(HKEY_CURRENT_USER,keypath,key);
 602     else
 603         rc = RegOpenKeyW(HKEY_CURRENT_USER,keypath,key);
 604
 605     return rc;
 606 }
 607
 608 UINT MSIREG_OpenFeaturesKey(LPCWSTR szProduct, MSIINSTALLCONTEXT context,
 609                             HKEY *key, BOOL create)
 610 {
 611     UINT r;
 612     LPWSTR usersid;
 613     HKEY root = HKEY_LOCAL_MACHINE;
 614     WCHAR squished_pc[GUID_SIZE];
 615     WCHAR keypath[MAX_PATH];
 616
 617     TRACE("(%s, %d, %d)\n", debugstr_w(szProduct), context, create);
 618
 619     if (!squash_guid(szProduct, squished_pc))
 620         return ERROR_FUNCTION_FAILED;
 621
 622     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 623
 624     if (context == MSIINSTALLCONTEXT_MACHINE)
 625     {
 626         sprintfW(keypath, szInstaller_LocalClassesFeat_fmt, squished_pc);
 627     }
 628     else if (context == MSIINSTALLCONTEXT_USERUNMANAGED)
 629     {
 630         root = HKEY_CURRENT_USER;
 631         sprintfW(keypath, szUserFeatures_fmt, squished_pc);
 632     }
 633     else
 634     {
 635         r = get_user_sid(&usersid);
 636         if (r != ERROR_SUCCESS || !usersid)
 637         {
 638             ERR("Failed to retrieve user SID: %d\n", r);
 639             return r;
 640         }
 641
 642         sprintfW(keypath, szInstaller_LocalManagedFeat_fmt, usersid, squished_pc);
 643         LocalFree(usersid);
 644     }
 645
 646     if (create)
 647         return RegCreateKeyW(root, keypath, key);
 648
 649     return RegOpenKeyW(root, keypath, key);
 650 }
 651
 652 UINT MSIREG_DeleteUserFeaturesKey(LPCWSTR szProduct)
 653 {
 654     WCHAR squished_pc[GUID_SIZE];
 655     WCHAR keypath[0x200];
 656
 657     TRACE("%s\n",debugstr_w(szProduct));
 658     if (!squash_guid(szProduct,squished_pc))
 659         return ERROR_FUNCTION_FAILED;
 660     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 661
 662     sprintfW(keypath,szUserFeatures_fmt,squished_pc);
 663     return RegDeleteTreeW(HKEY_CURRENT_USER, keypath);
 664 }
 665
 666 UINT MSIREG_OpenInstallerFeaturesKey(LPCWSTR szProduct, HKEY* key, BOOL create)
 667 {
 668     UINT rc;
 669     WCHAR squished_pc[GUID_SIZE];
 670     WCHAR keypath[0x200];
 671
 672     TRACE("%s\n",debugstr_w(szProduct));
 673     if (!squash_guid(szProduct,squished_pc))
 674         return ERROR_FUNCTION_FAILED;
 675     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 676
 677     sprintfW(keypath,szInstaller_Features_fmt,squished_pc);
 678
 679     if (create)
 680         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE,keypath,key);
 681     else
 682         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE,keypath,key);
 683
 684     return rc;
 685 }
 686
 687 UINT MSIREG_OpenUserDataFeaturesKey(LPCWSTR szProduct, MSIINSTALLCONTEXT context,
 688                                     HKEY *key, BOOL create)
 689 {
 690     UINT r;
 691     LPWSTR usersid;
 692     WCHAR squished_pc[GUID_SIZE];
 693     WCHAR keypath[0x200];
 694
 695     TRACE("(%s, %d, %d)\n", debugstr_w(szProduct), context, create);
 696
 697     if (!squash_guid(szProduct, squished_pc))
 698         return ERROR_FUNCTION_FAILED;
 699
 700     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 701
 702     if (context == MSIINSTALLCONTEXT_MACHINE)
 703     {
 704         sprintfW(keypath, szUserDataFeatures_fmt, localsid, squished_pc);
 705     }
 706     else
 707     {
 708         r = get_user_sid(&usersid);
 709         if (r != ERROR_SUCCESS || !usersid)
 710         {
 711             ERR("Failed to retrieve user SID: %d\n", r);
 712             return r;
 713         }
 714
 715         sprintfW(keypath, szUserDataFeatures_fmt, usersid, squished_pc);
 716         LocalFree(usersid);
 717     }
 718
 719     if (create)
 720         return RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 721
 722     return RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 723 }
 724
 725 UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY* key, BOOL create)
 726 {
 727     UINT rc;
 728     WCHAR squished_cc[GUID_SIZE];
 729     WCHAR keypath[0x200];
 730
 731     TRACE("%s\n",debugstr_w(szComponent));
 732     if (!squash_guid(szComponent,squished_cc))
 733         return ERROR_FUNCTION_FAILED;
 734     TRACE("squished (%s)\n", debugstr_w(squished_cc));
 735
 736     sprintfW(keypath,szUser_Components_fmt,squished_cc);
 737
 738     if (create)
 739         rc = RegCreateKeyW(HKEY_CURRENT_USER,keypath,key);
 740     else
 741         rc = RegOpenKeyW(HKEY_CURRENT_USER,keypath,key);
 742
 743     return rc;
 744 }
 745
 746 UINT MSIREG_OpenLocalUserDataComponentKey(LPCWSTR szComponent, HKEY *key, BOOL create)
 747 {
 748     WCHAR comp[GUID_SIZE];
 749     WCHAR keypath[0x200];
 750
 751     TRACE("%s\n", debugstr_w(szComponent));
 752     if (!squash_guid(szComponent, comp))
 753         return ERROR_FUNCTION_FAILED;
 754     TRACE("squished (%s)\n", debugstr_w(comp));
 755
 756     sprintfW(keypath, szUserDataComp_fmt, localsid, comp);
 757
 758     if (create)
 759         return RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 760
 761     return RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 762 }
 763
 764 UINT MSIREG_DeleteLocalUserDataComponentKey(LPCWSTR szComponent)
 765 {
 766     WCHAR comp[GUID_SIZE];
 767     WCHAR keypath[0x200];
 768
 769     TRACE("%s\n", debugstr_w(szComponent));
 770     if (!squash_guid(szComponent, comp))
 771         return ERROR_FUNCTION_FAILED;
 772     TRACE("squished (%s)\n", debugstr_w(comp));
 773
 774     sprintfW(keypath, szUserDataComp_fmt, localsid, comp);
 775     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
 776 }
 777
 778 UINT MSIREG_OpenUserDataComponentKey(LPCWSTR szComponent, HKEY *key, BOOL create)
 779 {
 780     UINT rc;
 781     WCHAR comp[GUID_SIZE];
 782     WCHAR keypath[0x200];
 783     LPWSTR usersid;
 784
 785     TRACE("%s\n", debugstr_w(szComponent));
 786     if (!squash_guid(szComponent, comp))
 787         return ERROR_FUNCTION_FAILED;
 788     TRACE("squished (%s)\n", debugstr_w(comp));
 789
 790     rc = get_user_sid(&usersid);
 791     if (rc != ERROR_SUCCESS || !usersid)
 792     {
 793         ERR("Failed to retrieve user SID: %d\n", rc);
 794         return rc;
 795     }
 796
 797     sprintfW(keypath, szUserDataComp_fmt, usersid, comp);
 798
 799     if (create)
 800         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 801     else
 802         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 803
 804     LocalFree(usersid);
 805     return rc;
 806 }
 807
 808 UINT MSIREG_DeleteUserDataComponentKey(LPCWSTR szComponent)
 809 {
 810     UINT rc;
 811     WCHAR comp[GUID_SIZE];
 812     WCHAR keypath[0x200];
 813     LPWSTR usersid;
 814
 815     TRACE("%s\n", debugstr_w(szComponent));
 816     if (!squash_guid(szComponent, comp))
 817         return ERROR_FUNCTION_FAILED;
 818     TRACE("squished (%s)\n", debugstr_w(comp));
 819
 820     rc = get_user_sid(&usersid);
 821     if (rc != ERROR_SUCCESS || !usersid)
 822     {
 823         ERR("Failed to retrieve user SID: %d\n", rc);
 824         return rc;
 825     }
 826
 827     sprintfW(keypath, szUserDataComp_fmt, usersid, comp);
 828
 829     LocalFree(usersid);
 830     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
 831 }
 832
 833 UINT MSIREG_OpenUserDataProductKey(LPCWSTR szProduct, HKEY *key, BOOL create)
 834 {
 835     UINT rc;
 836     WCHAR squished_pc[GUID_SIZE];
 837     WCHAR keypath[0x200];
 838     LPWSTR usersid;
 839
 840     TRACE("%s\n", debugstr_w(szProduct));
 841     if (!squash_guid(szProduct, squished_pc))
 842         return ERROR_FUNCTION_FAILED;
 843     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 844
 845     rc = get_user_sid(&usersid);
 846     if (rc != ERROR_SUCCESS || !usersid)
 847     {
 848         ERR("Failed to retrieve user SID: %d\n", rc);
 849         return rc;
 850     }
 851
 852     sprintfW(keypath, szUserDataProd_fmt, usersid, squished_pc);
 853
 854     if (create)
 855         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 856     else
 857         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 858
 859     LocalFree(usersid);
 860     return rc;
 861 }
 862
 863 UINT MSIREG_OpenLocalUserDataProductKey(LPCWSTR szProduct, HKEY *key, BOOL create)
 864 {
 865     WCHAR squished_pc[GUID_SIZE];
 866     WCHAR keypath[0x200];
 867
 868     TRACE("%s\n", debugstr_w(szProduct));
 869     if (!squash_guid(szProduct, squished_pc))
 870         return ERROR_FUNCTION_FAILED;
 871     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 872
 873     sprintfW(keypath, szUserDataProd_fmt, localsid, squished_pc);
 874
 875     if (create)
 876         return RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 877
 878     return RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 879 }
 880
 881 static UINT MSIREG_OpenInstallProps(LPCWSTR szProduct, LPCWSTR szUserSID,
 882                                     HKEY *key, BOOL create)
 883 {
 884     UINT rc;
 885     WCHAR squished_pc[GUID_SIZE];
 886     WCHAR keypath[0x200];
 887
 888     TRACE("%s\n", debugstr_w(szProduct));
 889     if (!squash_guid(szProduct, squished_pc))
 890         return ERROR_FUNCTION_FAILED;
 891     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 892
 893     sprintfW(keypath, szInstallProperties_fmt, szUserSID, squished_pc);
 894
 895     if (create)
 896         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 897     else
 898         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
 899
 900     return rc;
 901 }
 902
 903 UINT MSIREG_OpenCurrentUserInstallProps(LPCWSTR szProduct, HKEY *key,
 904                                                BOOL create)
 905 {
 906     UINT rc;
 907     LPWSTR usersid;
 908
 909     rc = get_user_sid(&usersid);
 910     if (rc != ERROR_SUCCESS || !usersid)
 911     {
 912         ERR("Failed to retrieve user SID: %d\n", rc);
 913         return rc;
 914     }
 915
 916     rc = MSIREG_OpenInstallProps(szProduct, usersid, key, create);
 917
 918     LocalFree(usersid);
 919     return rc;
 920 }
 921
 922 UINT MSIREG_OpenLocalSystemInstallProps(LPCWSTR szProduct, HKEY *key,
 923                                         BOOL create)
 924 {
 925     return MSIREG_OpenInstallProps(szProduct, localsid, key, create);
 926 }
 927
 928 UINT MSIREG_DeleteUserDataProductKey(LPCWSTR szProduct)
 929 {
 930     UINT rc;
 931     WCHAR squished_pc[GUID_SIZE];
 932     WCHAR keypath[0x200];
 933     LPWSTR usersid;
 934
 935     TRACE("%s\n", debugstr_w(szProduct));
 936     if (!squash_guid(szProduct, squished_pc))
 937         return ERROR_FUNCTION_FAILED;
 938     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 939
 940     rc = get_user_sid(&usersid);
 941     if (rc != ERROR_SUCCESS || !usersid)
 942     {
 943         ERR("Failed to retrieve user SID: %d\n", rc);
 944         return rc;
 945     }
 946
 947     sprintfW(keypath, szUserDataProd_fmt, usersid, squished_pc);
 948
 949     LocalFree(usersid);
 950     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
 951 }
 952
 953 UINT MSIREG_DeleteProductKey(LPCWSTR szProduct)
 954 {
 955     WCHAR squished_pc[GUID_SIZE];
 956     WCHAR keypath[0x200];
 957
 958     TRACE("%s\n", debugstr_w(szProduct));
 959     if (!squash_guid(szProduct, squished_pc))
 960         return ERROR_FUNCTION_FAILED;
 961     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 962
 963     sprintfW(keypath, szInstaller_Products_fmt, squished_pc);
 964
 965     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
 966 }
 967
 968 UINT MSIREG_OpenPatchesKey(LPCWSTR szPatch, HKEY* key, BOOL create)
 969 {
 970     UINT rc;
 971     WCHAR squished_pc[GUID_SIZE];
 972     WCHAR keypath[0x200];
 973
 974     TRACE("%s\n",debugstr_w(szPatch));
 975     if (!squash_guid(szPatch,squished_pc))
 976         return ERROR_FUNCTION_FAILED;
 977     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 978
 979     sprintfW(keypath,szInstaller_Patches_fmt,squished_pc);
 980
 981     if (create)
 982         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE,keypath,key);
 983     else
 984         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE,keypath,key);
 985
 986     return rc;
 987 }
 988
 989 UINT MSIREG_OpenUpgradeCodesKey(LPCWSTR szUpgradeCode, HKEY* key, BOOL create)
 990 {
 991     UINT rc;
 992     WCHAR squished_pc[GUID_SIZE];
 993     WCHAR keypath[0x200];
 994
 995     TRACE("%s\n",debugstr_w(szUpgradeCode));
 996     if (!squash_guid(szUpgradeCode,squished_pc))
 997         return ERROR_FUNCTION_FAILED;
 998     TRACE("squished (%s)\n", debugstr_w(squished_pc));
 999
1000     sprintfW(keypath,szInstaller_UpgradeCodes_fmt,squished_pc);
1001
1002     if (create)
1003         rc = RegCreateKeyW(HKEY_LOCAL_MACHINE,keypath,key);
1004     else
1005         rc = RegOpenKeyW(HKEY_LOCAL_MACHINE,keypath,key);
1006
1007     return rc;
1008 }
1009
1010 UINT MSIREG_OpenUserUpgradeCodesKey(LPCWSTR szUpgradeCode, HKEY* key, BOOL create)
1011 {
1012     UINT rc;
1013     WCHAR squished_pc[GUID_SIZE];
1014     WCHAR keypath[0x200];
1015
1016     TRACE("%s\n",debugstr_w(szUpgradeCode));
1017     if (!squash_guid(szUpgradeCode,squished_pc))
1018         return ERROR_FUNCTION_FAILED;
1019     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1020
1021     sprintfW(keypath,szInstaller_UserUpgradeCodes_fmt,squished_pc);
1022
1023     if (create)
1024         rc = RegCreateKeyW(HKEY_CURRENT_USER,keypath,key);
1025     else
1026         rc = RegOpenKeyW(HKEY_CURRENT_USER,keypath,key);
1027
1028     return rc;
1029 }
1030
1031 UINT MSIREG_DeleteUserUpgradeCodesKey(LPCWSTR szUpgradeCode)
1032 {
1033     WCHAR squished_pc[GUID_SIZE];
1034     WCHAR keypath[0x200];
1035
1036     TRACE("%s\n",debugstr_w(szUpgradeCode));
1037     if (!squash_guid(szUpgradeCode,squished_pc))
1038         return ERROR_FUNCTION_FAILED;
1039     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1040
1041     sprintfW(keypath,szInstaller_UserUpgradeCodes_fmt,squished_pc);
1042
1043     return RegDeleteTreeW(HKEY_CURRENT_USER, keypath);
1044 }
1045
1046 UINT MSIREG_OpenLocalSystemProductKey(LPCWSTR szProductCode, HKEY *key, BOOL create)
1047 {
1048     WCHAR squished_pc[GUID_SIZE];
1049     WCHAR keypath[0x200];
1050
1051     TRACE("%s\n", debugstr_w(szProductCode));
1052
1053     if (!squash_guid(szProductCode, squished_pc))
1054         return ERROR_FUNCTION_FAILED;
1055
1056     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1057
1058     sprintfW(keypath, szInstaller_LocalSystemProductCodes_fmt, squished_pc);
1059
1060     if (create)
1061         return RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
1062
1063     return RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
1064 }
1065
1066 UINT MSIREG_OpenLocalSystemComponentKey(LPCWSTR szComponent, HKEY *key, BOOL create)
1067 {
1068     WCHAR squished_pc[GUID_SIZE];
1069     WCHAR keypath[0x200];
1070
1071     TRACE("%s\n", debugstr_w(szComponent));
1072
1073     if (!squash_guid(szComponent, squished_pc))
1074         return ERROR_FUNCTION_FAILED;
1075
1076     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1077
1078     sprintfW(keypath, szInstaller_LocalSystemComponent_fmt, squished_pc);
1079
1080     if (create)
1081         return RegCreateKeyW(HKEY_LOCAL_MACHINE, keypath, key);
1082
1083     return RegOpenKeyW(HKEY_LOCAL_MACHINE, keypath, key);
1084 }
1085
1086 UINT MSIREG_DeleteLocalClassesProductKey(LPCWSTR szProductCode)
1087 {
1088     WCHAR squished_pc[GUID_SIZE];
1089     WCHAR keypath[0x200];
1090
1091     TRACE("%s\n", debugstr_w(szProductCode));
1092
1093     if (!squash_guid(szProductCode, squished_pc))
1094         return ERROR_FUNCTION_FAILED;
1095
1096     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1097
1098     sprintfW(keypath, szInstaller_LocalClassesProd_fmt, squished_pc);
1099
1100     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
1101 }
1102
1103 UINT MSIREG_DeleteLocalClassesFeaturesKey(LPCWSTR szProductCode)
1104 {
1105     WCHAR squished_pc[GUID_SIZE];
1106     WCHAR keypath[0x200];
1107
1108     TRACE("%s\n", debugstr_w(szProductCode));
1109
1110     if (!squash_guid(szProductCode, squished_pc))
1111         return ERROR_FUNCTION_FAILED;
1112
1113     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1114
1115     sprintfW(keypath, szInstaller_LocalClassesFeat_fmt, squished_pc);
1116
1117     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
1118 }
1119
1120 UINT MSIREG_OpenClassesUpgradeCodesKey(LPCWSTR szUpgradeCode, HKEY* key, BOOL create)
1121 {
1122     WCHAR squished_pc[GUID_SIZE];
1123     WCHAR keypath[0x200];
1124
1125     TRACE("%s\n", debugstr_w(szUpgradeCode));
1126     if (!squash_guid(szUpgradeCode, squished_pc))
1127         return ERROR_FUNCTION_FAILED;
1128     TRACE("squished (%s)\n", debugstr_w(squished_pc));
1129
1130     sprintfW(keypath, szInstaller_ClassesUpgrade_fmt, squished_pc);
1131
1132     if (create)
1133         return RegCreateKeyW(HKEY_CLASSES_ROOT, keypath, key);
1134
1135     return RegOpenKeyW(HKEY_CLASSES_ROOT, keypath, key);
1136 }
1137
1138 /*************************************************************************
1139  *  MsiDecomposeDescriptorW   [MSI.@]
1140  *
1141  * Decomposes an MSI descriptor into product, feature and component parts.
1142  * An MSI descriptor is a string of the form:
1143  *   [base 85 guid] [feature code] '>' [base 85 guid]
1144  *
1145  * PARAMS
1146  *   szDescriptor  [I]  the descriptor to decompose
1147  *   szProduct     [O]  buffer of MAX_FEATURE_CHARS+1 for the product guid
1148  *   szFeature     [O]  buffer of MAX_FEATURE_CHARS+1 for the feature code
1149  *   szComponent   [O]  buffer of MAX_FEATURE_CHARS+1 for the component guid
1150  *   pUsed         [O]  the length of the descriptor
1151  *
1152  * RETURNS
1153  *   ERROR_SUCCESS             if everything worked correctly
1154  *   ERROR_INVALID_PARAMETER   if the descriptor was invalid
1155  *
1156  */
1157 UINT WINAPI MsiDecomposeDescriptorW( LPCWSTR szDescriptor, LPWSTR szProduct,
1158                 LPWSTR szFeature, LPWSTR szComponent, LPDWORD pUsed )
1159 {
1160     UINT r, len;
1161     LPWSTR p;
1162     GUID product, component;
1163
1164     TRACE("%s %p %p %p %p\n", debugstr_w(szDescriptor), szProduct,
1165           szFeature, szComponent, pUsed);
1166
1167     r = decode_base85_guid( szDescriptor, &product );
1168     if( !r )
1169         return ERROR_INVALID_PARAMETER;
1170
1171     TRACE("product %s\n", debugstr_guid( &product ));
1172
1173     p = strchrW(&szDescriptor[20],'>');
1174     if( !p )
1175         return ERROR_INVALID_PARAMETER;
1176
1177     len = (p - &szDescriptor[20]);
1178     if( len > MAX_FEATURE_CHARS )
1179         return ERROR_INVALID_PARAMETER;
1180
1181     TRACE("feature %s\n", debugstr_wn( &szDescriptor[20], len ));
1182
1183     r = decode_base85_guid( p+1, &component );
1184     if( !r )
1185         return ERROR_INVALID_PARAMETER;
1186
1187     TRACE("component %s\n", debugstr_guid( &component ));
1188
1189     if (szProduct)
1190         StringFromGUID2( &product, szProduct, MAX_FEATURE_CHARS+1 );
1191     if (szComponent)
1192         StringFromGUID2( &component, szComponent, MAX_FEATURE_CHARS+1 );
1193     if (szFeature)
1194     {
1195         memcpy( szFeature, &szDescriptor[20], len*sizeof(WCHAR) );
1196         szFeature[len] = 0;
1197     }
1198     len = ( &p[21] - szDescriptor );
1199
1200     TRACE("length = %d\n", len);
1201     *pUsed = len;
1202
1203     return ERROR_SUCCESS;
1204 }
1205
1206 UINT WINAPI MsiDecomposeDescriptorA( LPCSTR szDescriptor, LPSTR szProduct,
1207                 LPSTR szFeature, LPSTR szComponent, LPDWORD pUsed )
1208 {
1209     WCHAR product[MAX_FEATURE_CHARS+1];
1210     WCHAR feature[MAX_FEATURE_CHARS+1];
1211     WCHAR component[MAX_FEATURE_CHARS+1];
1212     LPWSTR str = NULL, p = NULL, f = NULL, c = NULL;
1213     UINT r;
1214
1215     TRACE("%s %p %p %p %p\n", debugstr_a(szDescriptor), szProduct,
1216           szFeature, szComponent, pUsed);
1217
1218     str = strdupAtoW( szDescriptor );
1219     if( szDescriptor && !str )
1220         return ERROR_OUTOFMEMORY;
1221
1222     if (szProduct)
1223         p = product;
1224     if (szFeature)
1225         f = feature;
1226     if (szComponent)
1227         c = component;
1228
1229     r = MsiDecomposeDescriptorW( str, p, f, c, pUsed );
1230
1231     if (r == ERROR_SUCCESS)
1232     {
1233         WideCharToMultiByte( CP_ACP, 0, p, -1,
1234                              szProduct, MAX_FEATURE_CHARS+1, NULL, NULL );
1235         WideCharToMultiByte( CP_ACP, 0, f, -1,
1236                              szFeature, MAX_FEATURE_CHARS+1, NULL, NULL );
1237         WideCharToMultiByte( CP_ACP, 0, c, -1,
1238                              szComponent, MAX_FEATURE_CHARS+1, NULL, NULL );
1239     }
1240
1241     msi_free( str );
1242
1243     return r;
1244 }
1245
1246 UINT WINAPI MsiEnumProductsA(DWORD index, LPSTR lpguid)
1247 {
1248     DWORD r;
1249     WCHAR szwGuid[GUID_SIZE];
1250
1251     TRACE("%d %p\n", index, lpguid);
1252
1253     if (NULL == lpguid)
1254         return ERROR_INVALID_PARAMETER;
1255     r = MsiEnumProductsW(index, szwGuid);
1256     if( r == ERROR_SUCCESS )
1257         WideCharToMultiByte(CP_ACP, 0, szwGuid, -1, lpguid, GUID_SIZE, NULL, NULL);
1258
1259     return r;
1260 }
1261
1262 UINT WINAPI MsiEnumProductsW(DWORD index, LPWSTR lpguid)
1263 {
1264     HKEY hkeyProducts = 0;
1265     DWORD r;
1266     WCHAR szKeyName[SQUISH_GUID_SIZE];
1267
1268     TRACE("%d %p\n", index, lpguid);
1269
1270     if (NULL == lpguid)
1271         return ERROR_INVALID_PARAMETER;
1272
1273     r = RegCreateKeyW(HKEY_LOCAL_MACHINE, szInstaller_Products, &hkeyProducts);
1274     if( r != ERROR_SUCCESS )
1275         return ERROR_NO_MORE_ITEMS;
1276
1277     r = RegEnumKeyW(hkeyProducts, index, szKeyName, SQUISH_GUID_SIZE);
1278     if( r == ERROR_SUCCESS )
1279         unsquash_guid(szKeyName, lpguid);
1280     RegCloseKey(hkeyProducts);
1281
1282     return r;
1283 }
1284
1285 UINT WINAPI MsiEnumFeaturesA(LPCSTR szProduct, DWORD index,
1286       LPSTR szFeature, LPSTR szParent)
1287 {
1288     DWORD r;
1289     WCHAR szwFeature[GUID_SIZE], szwParent[GUID_SIZE];
1290     LPWSTR szwProduct = NULL;
1291
1292     TRACE("%s %d %p %p\n", debugstr_a(szProduct), index, szFeature, szParent);
1293
1294     if( szProduct )
1295     {
1296         szwProduct = strdupAtoW( szProduct );
1297         if( !szwProduct )
1298             return ERROR_OUTOFMEMORY;
1299     }
1300
1301     r = MsiEnumFeaturesW(szwProduct, index, szwFeature, szwParent);
1302     if( r == ERROR_SUCCESS )
1303     {
1304         WideCharToMultiByte(CP_ACP, 0, szwFeature, -1,
1305                             szFeature, GUID_SIZE, NULL, NULL);
1306         WideCharToMultiByte(CP_ACP, 0, szwParent, -1,
1307                             szParent, GUID_SIZE, NULL, NULL);
1308     }
1309
1310     msi_free( szwProduct);
1311
1312     return r;
1313 }
1314
1315 UINT WINAPI MsiEnumFeaturesW(LPCWSTR szProduct, DWORD index,
1316       LPWSTR szFeature, LPWSTR szParent)
1317 {
1318     HKEY hkeyProduct = 0;
1319     DWORD r, sz;
1320
1321     TRACE("%s %d %p %p\n", debugstr_w(szProduct), index, szFeature, szParent);
1322
1323     if( !szProduct )
1324         return ERROR_INVALID_PARAMETER;
1325
1326     r = MSIREG_OpenInstallerFeaturesKey(szProduct,&hkeyProduct,FALSE);
1327     if( r != ERROR_SUCCESS )
1328         return ERROR_NO_MORE_ITEMS;
1329
1330     sz = GUID_SIZE;
1331     r = RegEnumValueW(hkeyProduct, index, szFeature, &sz, NULL, NULL, NULL, NULL);
1332     RegCloseKey(hkeyProduct);
1333
1334     return r;
1335 }
1336
1337 UINT WINAPI MsiEnumComponentsA(DWORD index, LPSTR lpguid)
1338 {
1339     DWORD r;
1340     WCHAR szwGuid[GUID_SIZE];
1341
1342     TRACE("%d %p\n", index, lpguid);
1343
1344     r = MsiEnumComponentsW(index, szwGuid);
1345     if( r == ERROR_SUCCESS )
1346         WideCharToMultiByte(CP_ACP, 0, szwGuid, -1, lpguid, GUID_SIZE, NULL, NULL);
1347
1348     return r;
1349 }
1350
1351 UINT WINAPI MsiEnumComponentsW(DWORD index, LPWSTR lpguid)
1352 {
1353     HKEY hkeyComponents = 0;
1354     DWORD r;
1355     WCHAR szKeyName[SQUISH_GUID_SIZE];
1356
1357     TRACE("%d %p\n", index, lpguid);
1358
1359     r = RegCreateKeyW(HKEY_LOCAL_MACHINE, szInstaller_Components, &hkeyComponents);
1360     if( r != ERROR_SUCCESS )
1361         return ERROR_NO_MORE_ITEMS;
1362
1363     r = RegEnumKeyW(hkeyComponents, index, szKeyName, SQUISH_GUID_SIZE);
1364     if( r == ERROR_SUCCESS )
1365         unsquash_guid(szKeyName, lpguid);
1366     RegCloseKey(hkeyComponents);
1367
1368     return r;
1369 }
1370
1371 UINT WINAPI MsiEnumClientsA(LPCSTR szComponent, DWORD index, LPSTR szProduct)
1372 {
1373     DWORD r;
1374     WCHAR szwProduct[GUID_SIZE];
1375     LPWSTR szwComponent = NULL;
1376
1377     TRACE("%s %d %p\n", debugstr_a(szComponent), index, szProduct);
1378
1379     if ( !szProduct )
1380         return ERROR_INVALID_PARAMETER;
1381
1382     if( szComponent )
1383     {
1384         szwComponent = strdupAtoW( szComponent );
1385         if( !szwComponent )
1386             return ERROR_OUTOFMEMORY;
1387     }
1388
1389     r = MsiEnumClientsW(szComponent?szwComponent:NULL, index, szwProduct);
1390     if( r == ERROR_SUCCESS )
1391     {
1392         WideCharToMultiByte(CP_ACP, 0, szwProduct, -1,
1393                             szProduct, GUID_SIZE, NULL, NULL);
1394     }
1395
1396     msi_free( szwComponent);
1397
1398     return r;
1399 }
1400
1401 UINT WINAPI MsiEnumClientsW(LPCWSTR szComponent, DWORD index, LPWSTR szProduct)
1402 {
1403     HKEY hkeyComp = 0;
1404     DWORD r, sz;
1405     WCHAR szValName[SQUISH_GUID_SIZE];
1406
1407     TRACE("%s %d %p\n", debugstr_w(szComponent), index, szProduct);
1408
1409     if (!szComponent || !*szComponent || !szProduct)
1410         return ERROR_INVALID_PARAMETER;
1411
1412     if (MSIREG_OpenUserDataComponentKey(szComponent, &hkeyComp, FALSE) != ERROR_SUCCESS &&
1413         MSIREG_OpenLocalSystemComponentKey(szComponent, &hkeyComp, FALSE) != ERROR_SUCCESS)
1414         return ERROR_UNKNOWN_COMPONENT;
1415
1416     /* see if there are any products at all */
1417     sz = SQUISH_GUID_SIZE;
1418     r = RegEnumValueW(hkeyComp, 0, szValName, &sz, NULL, NULL, NULL, NULL);
1419     if (r != ERROR_SUCCESS)
1420     {
1421         RegCloseKey(hkeyComp);
1422
1423         if (index != 0)
1424             return ERROR_INVALID_PARAMETER;
1425
1426         return ERROR_UNKNOWN_COMPONENT;
1427     }
1428
1429     sz = SQUISH_GUID_SIZE;
1430     r = RegEnumValueW(hkeyComp, index, szValName, &sz, NULL, NULL, NULL, NULL);
1431     if( r == ERROR_SUCCESS )
1432         unsquash_guid(szValName, szProduct);
1433
1434     RegCloseKey(hkeyComp);
1435
1436     return r;
1437 }
1438
1439 static UINT MSI_EnumComponentQualifiers( LPCWSTR szComponent, DWORD iIndex,
1440                 awstring *lpQualBuf, LPDWORD pcchQual,
1441                 awstring *lpAppBuf, LPDWORD pcchAppBuf )
1442 {
1443     DWORD name_sz, val_sz, name_max, val_max, type, ofs;
1444     LPWSTR name = NULL, val = NULL;
1445     UINT r, r2;
1446     HKEY key;
1447
1448     TRACE("%s %08x %p %p %p %p\n", debugstr_w(szComponent), iIndex,
1449           lpQualBuf, pcchQual, lpAppBuf, pcchAppBuf);
1450
1451     if (!szComponent)
1452         return ERROR_INVALID_PARAMETER;
1453
1454     r = MSIREG_OpenUserComponentsKey( szComponent, &key, FALSE );
1455     if (r != ERROR_SUCCESS)
1456         return ERROR_UNKNOWN_COMPONENT;
1457
1458     /* figure out how big the name is we want to return */
1459     name_max = 0x10;
1460     r = ERROR_OUTOFMEMORY;
1461     name = msi_alloc( name_max * sizeof(WCHAR) );
1462     if (!name)
1463         goto end;
1464
1465     val_max = 0x10;
1466     r = ERROR_OUTOFMEMORY;
1467     val = msi_alloc( val_max );
1468     if (!val)
1469         goto end;
1470
1471     /* loop until we allocate enough memory */
1472     while (1)
1473     {
1474         name_sz = name_max;
1475         val_sz = val_max;
1476         r = RegEnumValueW( key, iIndex, name, &name_sz,
1477                            NULL, &type, (LPBYTE)val, &val_sz );
1478         if (r == ERROR_SUCCESS)
1479             break;
1480         if (r != ERROR_MORE_DATA)
1481             goto end;
1482
1483         if (type != REG_MULTI_SZ)
1484         {
1485             ERR("component data has wrong type (%d)\n", type);
1486             goto end;
1487         }
1488
1489         r = ERROR_OUTOFMEMORY;
1490         if ((name_sz+1) >= name_max)
1491         {
1492             name_max *= 2;
1493             msi_free( name );
1494             name = msi_alloc( name_max * sizeof (WCHAR) );
1495             if (!name)
1496                 goto end;
1497             continue;
1498         }
1499         if (val_sz > val_max)
1500         {
1501             val_max = val_sz + sizeof (WCHAR);
1502             msi_free( val );
1503             val = msi_alloc( val_max * sizeof (WCHAR) );
1504             if (!val)
1505                 goto end;
1506             continue;
1507         }
1508         ERR("should be enough data, but isn't %d %d\n", name_sz, val_sz );
1509         goto end;
1510     }
1511
1512     ofs = 0;
1513     r = MsiDecomposeDescriptorW( val, NULL, NULL, NULL, &ofs );
1514     if (r != ERROR_SUCCESS)
1515         goto end;
1516
1517     TRACE("Providing %s and %s\n", debugstr_w(name), debugstr_w(val+ofs));
1518
1519     r = msi_strcpy_to_awstring( name, lpQualBuf, pcchQual );
1520     r2 = msi_strcpy_to_awstring( val+ofs, lpAppBuf, pcchAppBuf );
1521
1522     if (r2 != ERROR_SUCCESS)
1523         r = r2;
1524
1525 end:
1526     msi_free(val);
1527     msi_free(name);
1528     RegCloseKey(key);
1529
1530     return r;
1531 }
1532
1533 /*************************************************************************
1534  *  MsiEnumComponentQualifiersA [MSI.@]
1535  */
1536 UINT WINAPI MsiEnumComponentQualifiersA( LPCSTR szComponent, DWORD iIndex,
1537                 LPSTR lpQualifierBuf, LPDWORD pcchQualifierBuf,
1538                 LPSTR lpApplicationDataBuf, LPDWORD pcchApplicationDataBuf )
1539 {
1540     awstring qual, appdata;
1541     LPWSTR comp;
1542     UINT r;
1543
1544     TRACE("%s %08x %p %p %p %p\n", debugstr_a(szComponent), iIndex,
1545           lpQualifierBuf, pcchQualifierBuf, lpApplicationDataBuf,
1546           pcchApplicationDataBuf);
1547
1548     comp = strdupAtoW( szComponent );
1549     if (szComponent && !comp)
1550         return ERROR_OUTOFMEMORY;
1551
1552     qual.unicode = FALSE;
1553     qual.str.a = lpQualifierBuf;
1554
1555     appdata.unicode = FALSE;
1556     appdata.str.a = lpApplicationDataBuf;
1557
1558     r = MSI_EnumComponentQualifiers( comp, iIndex,
1559               &qual, pcchQualifierBuf, &appdata, pcchApplicationDataBuf );
1560     msi_free( comp );
1561     return r;
1562 }
1563
1564 /*************************************************************************
1565  *  MsiEnumComponentQualifiersW [MSI.@]
1566  */
1567 UINT WINAPI MsiEnumComponentQualifiersW( LPCWSTR szComponent, DWORD iIndex,
1568                 LPWSTR lpQualifierBuf, LPDWORD pcchQualifierBuf,
1569                 LPWSTR lpApplicationDataBuf, LPDWORD pcchApplicationDataBuf )
1570 {
1571     awstring qual, appdata;
1572
1573     TRACE("%s %08x %p %p %p %p\n", debugstr_w(szComponent), iIndex,
1574           lpQualifierBuf, pcchQualifierBuf, lpApplicationDataBuf,
1575           pcchApplicationDataBuf);
1576
1577     qual.unicode = TRUE;
1578     qual.str.w = lpQualifierBuf;
1579
1580     appdata.unicode = TRUE;
1581     appdata.str.w = lpApplicationDataBuf;
1582
1583     return MSI_EnumComponentQualifiers( szComponent, iIndex,
1584                  &qual, pcchQualifierBuf, &appdata, pcchApplicationDataBuf );
1585 }
1586
1587 /*************************************************************************
1588  *  MsiEnumRelatedProductsW   [MSI.@]
1589  *
1590  */
1591 UINT WINAPI MsiEnumRelatedProductsW(LPCWSTR szUpgradeCode, DWORD dwReserved,
1592                                     DWORD iProductIndex, LPWSTR lpProductBuf)
1593 {
1594     UINT r;
1595     HKEY hkey;
1596     DWORD dwSize = SQUISH_GUID_SIZE;
1597     WCHAR szKeyName[SQUISH_GUID_SIZE];
1598
1599     TRACE("%s %u %u %p\n", debugstr_w(szUpgradeCode), dwReserved,
1600           iProductIndex, lpProductBuf);
1601
1602     if (NULL == szUpgradeCode)
1603         return ERROR_INVALID_PARAMETER;
1604     if (NULL == lpProductBuf)
1605         return ERROR_INVALID_PARAMETER;
1606
1607     r = MSIREG_OpenUpgradeCodesKey(szUpgradeCode, &hkey, FALSE);
1608     if (r != ERROR_SUCCESS)
1609         return ERROR_NO_MORE_ITEMS;
1610
1611     r = RegEnumValueW(hkey, iProductIndex, szKeyName, &dwSize, NULL, NULL, NULL, NULL);
1612     if( r == ERROR_SUCCESS )
1613         unsquash_guid(szKeyName, lpProductBuf);
1614     RegCloseKey(hkey);
1615
1616     return r;
1617 }
1618
1619 /*************************************************************************
1620  *  MsiEnumRelatedProductsA   [MSI.@]
1621  *
1622  */
1623 UINT WINAPI MsiEnumRelatedProductsA(LPCSTR szUpgradeCode, DWORD dwReserved,
1624                                     DWORD iProductIndex, LPSTR lpProductBuf)
1625 {
1626     LPWSTR szwUpgradeCode = NULL;
1627     WCHAR productW[GUID_SIZE];
1628     UINT r;
1629
1630     TRACE("%s %u %u %p\n", debugstr_a(szUpgradeCode), dwReserved,
1631           iProductIndex, lpProductBuf);
1632
1633     if (szUpgradeCode)
1634     {
1635         szwUpgradeCode = strdupAtoW( szUpgradeCode );
1636         if( !szwUpgradeCode )
1637             return ERROR_OUTOFMEMORY;
1638     }
1639
1640     r = MsiEnumRelatedProductsW( szwUpgradeCode, dwReserved,
1641                                  iProductIndex, productW );
1642     if (r == ERROR_SUCCESS)
1643     {
1644         WideCharToMultiByte( CP_ACP, 0, productW, GUID_SIZE,
1645                              lpProductBuf, GUID_SIZE, NULL, NULL );
1646     }
1647     msi_free( szwUpgradeCode);
1648     return r;
1649 }
1650
1651 /***********************************************************************
1652  * MsiEnumPatchesExA            [MSI.@]
1653  */
1654 UINT WINAPI MsiEnumPatchesExA(LPCSTR szProductCode, LPCSTR szUserSid,
1655         DWORD dwContext, DWORD dwFilter, DWORD dwIndex, LPSTR szPatchCode,
1656         LPSTR szTargetProductCode, MSIINSTALLCONTEXT *pdwTargetProductContext,
1657         LPSTR szTargetUserSid, LPSTR pcchTargetUserSid)
1658 {
1659     FIXME("(%s, %s, %d, %d, %d, %p, %p, %p, %p, %p) stub!\n",
1660           debugstr_a(szProductCode), debugstr_a(szUserSid), dwContext, dwFilter,
1661           dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext,
1662           szTargetUserSid, pcchTargetUserSid);
1663     return ERROR_NO_MORE_ITEMS;
1664 }
1665
1666 /***********************************************************************
1667  * MsiEnumPatchesW            [MSI.@]
1668  */
1669 UINT WINAPI MsiEnumPatchesExW(LPCWSTR szProductCode, LPCWSTR szUserSid,
1670         DWORD dwContext, DWORD dwFilter, DWORD dwIndex, LPWSTR szPatchCode,
1671         LPWSTR szTargetProductCode, MSIINSTALLCONTEXT *pdwTargetProductContext,
1672         LPWSTR szTargetUserSid, LPWSTR pcchTargetUserSid)
1673 {
1674     FIXME("(%s, %s, %d, %d, %d, %p, %p, %p, %p, %p) stub!\n",
1675           debugstr_w(szProductCode), debugstr_w(szUserSid), dwContext, dwFilter,
1676           dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext,
1677           szTargetUserSid, pcchTargetUserSid);
1678     return ERROR_NO_MORE_ITEMS;
1679 }
1680
1681 /***********************************************************************
1682  * MsiEnumPatchesA            [MSI.@]
1683  */
1684 UINT WINAPI MsiEnumPatchesA( LPCSTR szProduct, DWORD iPatchIndex,
1685         LPSTR lpPatchBuf, LPSTR lpTransformsBuf, LPDWORD pcchTransformsBuf)
1686 {
1687     FIXME("%s %d %p %p %p\n", debugstr_a(szProduct),
1688           iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf);
1689     return ERROR_NO_MORE_ITEMS;
1690 }
1691
1692 /***********************************************************************
1693  * MsiEnumPatchesW            [MSI.@]
1694  */
1695 UINT WINAPI MsiEnumPatchesW( LPCWSTR szProduct, DWORD iPatchIndex,
1696         LPWSTR lpPatchBuf, LPWSTR lpTransformsBuf, LPDWORD pcchTransformsBuf)
1697 {
1698     FIXME("%s %d %p %p %p\n", debugstr_w(szProduct),
1699           iPatchIndex, lpPatchBuf, lpTransformsBuf, pcchTransformsBuf);
1700     return ERROR_NO_MORE_ITEMS;
1701 }
1702
1703 UINT WINAPI MsiEnumProductsExA( LPCSTR szProductCode, LPCSTR szUserSid,
1704         DWORD dwContext, DWORD dwIndex, CHAR szInstalledProductCode[39],
1705         MSIINSTALLCONTEXT* pdwInstalledContext, LPSTR szSid, LPDWORD pcchSid)
1706 {
1707     FIXME("%s %s %d %d %p %p %p %p\n", debugstr_a(szProductCode), debugstr_a(szUserSid),
1708           dwContext, dwIndex, szInstalledProductCode, pdwInstalledContext,
1709           szSid, pcchSid);
1710     return ERROR_NO_MORE_ITEMS;
1711 }
1712
1713 UINT WINAPI MsiEnumProductsExW( LPCWSTR szProductCode, LPCWSTR szUserSid,
1714         DWORD dwContext, DWORD dwIndex, WCHAR szInstalledProductCode[39],
1715         MSIINSTALLCONTEXT* pdwInstalledContext, LPWSTR szSid, LPDWORD pcchSid)
1716 {
1717     FIXME("%s %s %d %d %p %p %p %p\n", debugstr_w(szProductCode), debugstr_w(szUserSid),
1718           dwContext, dwIndex, szInstalledProductCode, pdwInstalledContext,
1719           szSid, pcchSid);
1720     return ERROR_NO_MORE_ITEMS;
1721 }