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  * This module will be all the helper functions for registry access by the
  45  * installer bits.
  46  */
  47
  48 static const WCHAR szUserDataFeatures_fmt[] = {
  49     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  50     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  51     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  52     '%','s','\\','P','r','o','d','u','c','t','s','\\','%','s','\\','F','e','a','t','u','r','e','s',0};
  53
  54 static const WCHAR szUserDataComp_fmt[] = {
  55     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  56     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  57     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  58     '%','s','\\','C','o','m','p','o','n','e','n','t','s','\\','%','s',0};
  59
  60 static const WCHAR szUserDataComponents_fmt[] = {
  61     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  62     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  63     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  64     '%','s','\\','C','o','m','p','o','n','e','n','t','s',0};
  65
  66 static const WCHAR szUserDataProd_fmt[] = {
  67     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  68     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  69     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  70     '%','s','\\','P','r','o','d','u','c','t','s','\\','%','s',0};
  71
  72 static const WCHAR szUserDataProducts_fmt[] = {
  73     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  74     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  75     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  76     '%','s','\\','P','r','o','d','u','c','t','s',0};
  77
  78 static const WCHAR szUserDataPatch_fmt[] = {
  79     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  80     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  81     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  82     '%','s','\\','P','a','t','c','h','e','s','\\','%','s',0};
  83
  84 static const WCHAR szUserDataPatches_fmt[] = {
  85     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  86     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  87     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  88     '%','s','\\','P','a','t','c','h','e','s',0};
  89
  90 static const WCHAR szUserDataProductPatches_fmt[] = {
  91     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  92     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  93     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
  94     '%','s','\\','P','r','o','d','u','c','t','s','\\','%','s','\\','P','a','t','c','h','e','s',0};
  95
  96 static const WCHAR szInstallProperties_fmt[] = {
  97     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
  98     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
  99     'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
 100     '%','s','\\','P','r','o','d','u','c','t','s','\\','%','s','\\',
 101     'I','n','s','t','a','l','l','P','r','o','p','e','r','t','i','e','s',0};
 102
 103 static const WCHAR szInstaller_LocalManaged_fmt[] = {
 104     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 105     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 106     'I','n','s','t','a','l','l','e','r','\\','M','a','n','a','g','e','d','\\','%','s','\\',
 107     'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s',0};
 108
 109 static const WCHAR szInstaller_LocalManagedProd_fmt[] = {
 110     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 111     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 112     'I','n','s','t','a','l','l','e','r','\\','M','a','n','a','g','e','d','\\','%','s','\\',
 113     'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s','\\','%','s',0};
 114
 115 static const WCHAR szInstaller_LocalManagedFeat_fmt[] = {
 116     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 117     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 118     'I','n','s','t','a','l','l','e','r','\\','M','a','n','a','g','e','d','\\','%','s','\\',
 119     'I','n','s','t','a','l','l','e','r','\\','F','e','a','t','u','r','e','s','\\','%','s',0};
 120
 121 static const WCHAR szInstaller_Products[] = {
 122     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 123     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 124     'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s',0};
 125
 126 static const WCHAR szInstaller_Patches[] = {
 127     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 128     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 129     'I','n','s','t','a','l','l','e','r','\\','P','a','t','c','h','e','s',0};
 130
 131 static const WCHAR szInstaller_Components[] = {
 132     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 133     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 134     'I','n','s','t','a','l','l','e','r','\\','C','o','m','p','o','n','e','n','t','s',0};
 135
 136 static const WCHAR szInstaller_LocalClassesProducts[] = {
 137     'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
 138     'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s',0};
 139
 140 static const WCHAR szInstaller_LocalClassesFeatures[] = {
 141     'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
 142     'I','n','s','t','a','l','l','e','r','\\','F','e','a','t','u','r','e','s',0};
 143
 144 static const WCHAR szInstaller_LocalClassesProd[] = {
 145     'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
 146     'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s','\\',0};
 147
 148 static const WCHAR szInstaller_LocalClassesFeat[] = {
 149     'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
 150     'I','n','s','t','a','l','l','e','r','\\','F','e','a','t','u','r','e','s','\\',0};
 151
 152 static const WCHAR szInstaller_ClassesUpgradeCode[] = {
 153     'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
 154     'I','n','s','t','a','l','l','e','r','\\','U','p','g','r','a','d','e','C','o','d','e','s','\\',0};
 155
 156 static const WCHAR szInstaller_ClassesUpgradeCodes[] = {
 157     'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
 158     'I','n','s','t','a','l','l','e','r','\\','U','p','g','r','a','d','e','C','o','d','e','s',0};
 159
 160 static const WCHAR szInstaller_Features[] = {
 161     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 162     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 163     'I','n','s','t','a','l','l','e','r','\\','F','e','a','t','u','r','e','s','\\',0};
 164
 165 static const WCHAR szInstaller_UpgradeCodes[] = {
 166     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 167     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 168     'I','n','s','t','a','l','l','e','r','\\','U','p','g','r','a','d','e','C','o','d','e','s','\\',0};
 169
 170 static const WCHAR szInstaller_UserUpgradeCodes[] = {
 171     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 172     'I','n','s','t','a','l','l','e','r','\\','U','p','g','r','a','d','e','C','o','d','e','s','\\',0};
 173
 174 static const WCHAR szUninstall[] = {
 175     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 176     'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 177     'U','n','i','n','s','t','a','l','l','\\',0};
 178
 179 static const WCHAR szUninstall_32node[] = {
 180     'S','o','f','t','w','a','r','e','\\','W','o','w','6','4','3','2','N','o','d','e','\\',
 181     'M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
 182     'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','U','n','i','n','s','t','a','l','l','\\',0};
 183
 184 static const WCHAR szUserComponents[] = {
 185     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 186     'I','n','s','t','a','l','l','e','r','\\','C','o','m','p','o','n','e','n','t','s','\\',0};
 187
 188 static const WCHAR szUserFeatures[] = {
 189     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 190     'I','n','s','t','a','l','l','e','r','\\','F','e','a','t','u','r','e','s','\\',0};
 191
 192 static const WCHAR szUserProducts[] = {
 193     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 194     'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s','\\',0};
 195
 196 static const WCHAR szUserPatches[] = {
 197     'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
 198     'I','n','s','t','a','l','l','e','r','\\','P','a','t','c','h','e','s','\\',0};
 199
 200 BOOL unsquash_guid(LPCWSTR in, LPWSTR out)
 201 {
 202     DWORD i,n=0;
 203
 204     if (lstrlenW(in) != 32)
 205         return FALSE;
 206
 207     out[n++]='{';
 208     for(i=0; i<8; i++)
 209         out[n++] = in[7-i];
 210     out[n++]='-';
 211     for(i=0; i<4; i++)
 212         out[n++] = in[11-i];
 213     out[n++]='-';
 214     for(i=0; i<4; i++)
 215         out[n++] = in[15-i];
 216     out[n++]='-';
 217     for(i=0; i<2; i++)
 218     {
 219         out[n++] = in[17+i*2];
 220         out[n++] = in[16+i*2];
 221     }
 222     out[n++]='-';
 223     for( ; i<8; i++)
 224     {
 225         out[n++] = in[17+i*2];
 226         out[n++] = in[16+i*2];
 227     }
 228     out[n++]='}';
 229     out[n]=0;
 230     return TRUE;
 231 }
 232
 233 BOOL squash_guid(LPCWSTR in, LPWSTR out)
 234 {
 235     DWORD i,n=1;
 236     GUID guid;
 237
 238     out[0] = 0;
 239
 240     if (FAILED(CLSIDFromString((LPCOLESTR)in, &guid)))
 241         return FALSE;
 242
 243     for(i=0; i<8; i++)
 244         out[7-i] = in[n++];
 245     n++;
 246     for(i=0; i<4; i++)
 247         out[11-i] = in[n++];
 248     n++;
 249     for(i=0; i<4; i++)
 250         out[15-i] = in[n++];
 251     n++;
 252     for(i=0; i<2; i++)
 253     {
 254         out[17+i*2] = in[n++];
 255         out[16+i*2] = in[n++];
 256     }
 257     n++;
 258     for( ; i<8; i++)
 259     {
 260         out[17+i*2] = in[n++];
 261         out[16+i*2] = in[n++];
 262     }
 263     out[32]=0;
 264     return TRUE;
 265 }
 266
 267
 268 /* tables for encoding and decoding base85 */
 269 static const unsigned char table_dec85[0x80] = {
 270 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 271 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 272 0xff,0x00,0xff,0xff,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0xff,
 273 0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,0x14,0x15,0xff,0xff,0xff,0x16,0xff,0x17,
 274 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
 275 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,0xff,0x34,0x35,0x36,
 276 0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,0x44,0x45,0x46,
 277 0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0xff,0x53,0x54,0xff,
 278 };
 279
 280 static const char table_enc85[] =
 281 "!$%&'()*+,-.0123456789=?@ABCDEFGHIJKLMNO"
 282 "PQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwx"
 283 "yz{}~";
 284
 285 /*
 286  *  Converts a base85 encoded guid into a GUID pointer
 287  *  Base85 encoded GUIDs should be 20 characters long.
 288  *
 289  *  returns TRUE if successful, FALSE if not
 290  */
 291 BOOL decode_base85_guid( LPCWSTR str, GUID *guid )
 292 {
 293     DWORD i, val = 0, base = 1, *p;
 294
 295     if (!str)
 296         return FALSE;
 297
 298     p = (DWORD*) guid;
 299     for( i=0; i<20; i++ )
 300     {
 301         if( (i%5) == 0 )
 302         {
 303             val = 0;
 304             base = 1;
 305         }
 306         val += table_dec85[str[i]] * base;
 307         if( str[i] >= 0x80 )
 308             return FALSE;
 309         if( table_dec85[str[i]] == 0xff )
 310             return FALSE;
 311         if( (i%5) == 4 )
 312             p[i/5] = val;
 313         base *= 85;
 314     }
 315     return TRUE;
 316 }
 317
 318 /*
 319  *  Encodes a base85 guid given a GUID pointer
 320  *  Caller should provide a 21 character buffer for the encoded string.
 321  *
 322  *  returns TRUE if successful, FALSE if not
 323  */
 324 BOOL encode_base85_guid( GUID *guid, LPWSTR str )
 325 {
 326     unsigned int x, *p, i;
 327
 328     p = (unsigned int*) guid;
 329     for( i=0; i<4; i++ )
 330     {
 331         x = p[i];
 332         *str++ = table_enc85[x%85];
 333         x = x/85;
 334         *str++ = table_enc85[x%85];
 335         x = x/85;
 336         *str++ = table_enc85[x%85];
 337         x = x/85;
 338         *str++ = table_enc85[x%85];
 339         x = x/85;
 340         *str++ = table_enc85[x%85];
 341     }
 342     *str = 0;
 343
 344     return TRUE;
 345 }
 346
 347 DWORD msi_version_str_to_dword(LPCWSTR p)
 348 {
 349     DWORD major, minor = 0, build = 0, version = 0;
 350
 351     if (!p)
 352         return version;
 353
 354     major = atoiW(p);
 355
 356     p = strchrW(p, '.');
 357     if (p)
 358     {
 359         minor = atoiW(p+1);
 360         p = strchrW(p+1, '.');
 361         if (p)
 362             build = atoiW(p+1);
 363     }
 364
 365     return MAKELONG(build, MAKEWORD(minor, major));
 366 }
 367
 368 LONG msi_reg_set_val_str( HKEY hkey, LPCWSTR name, LPCWSTR value )
 369 {
 370     DWORD len;
 371     if (!value) value = szEmpty;
 372     len = (lstrlenW(value) + 1) * sizeof (WCHAR);
 373     return RegSetValueExW( hkey, name, 0, REG_SZ, (const BYTE *)value, len );
 374 }
 375
 376 LONG msi_reg_set_val_multi_str( HKEY hkey, LPCWSTR name, LPCWSTR value )
 377 {
 378     LPCWSTR p = value;
 379     while (*p) p += lstrlenW(p) + 1;
 380     return RegSetValueExW( hkey, name, 0, REG_MULTI_SZ,
 381                            (const BYTE *)value, (p + 1 - value) * sizeof(WCHAR) );
 382 }
 383
 384 LONG msi_reg_set_val_dword( HKEY hkey, LPCWSTR name, DWORD val )
 385 {
 386     return RegSetValueExW( hkey, name, 0, REG_DWORD, (LPBYTE)&val, sizeof (DWORD) );
 387 }
 388
 389 LONG msi_reg_set_subkey_val( HKEY hkey, LPCWSTR path, LPCWSTR name, LPCWSTR val )
 390 {
 391     HKEY hsubkey = 0;
 392     LONG r;
 393
 394     r = RegCreateKeyW( hkey, path, &hsubkey );
 395     if (r != ERROR_SUCCESS)
 396         return r;
 397     r = msi_reg_set_val_str( hsubkey, name, val );
 398     RegCloseKey( hsubkey );
 399     return r;
 400 }
 401
 402 LPWSTR msi_reg_get_val_str( HKEY hkey, LPCWSTR name )
 403 {
 404     DWORD len = 0;
 405     LPWSTR val;
 406     LONG r;
 407
 408     r = RegQueryValueExW(hkey, name, NULL, NULL, NULL, &len);
 409     if (r != ERROR_SUCCESS)
 410         return NULL;
 411
 412     len += sizeof (WCHAR);
 413     val = msi_alloc( len );
 414     if (!val)
 415         return NULL;
 416     val[0] = 0;
 417     RegQueryValueExW(hkey, name, NULL, NULL, (LPBYTE) val, &len);
 418     return val;
 419 }
 420
 421 BOOL msi_reg_get_val_dword( HKEY hkey, LPCWSTR name, DWORD *val)
 422 {
 423     DWORD type, len = sizeof (DWORD);
 424     LONG r = RegQueryValueExW(hkey, name, NULL, &type, (LPBYTE) val, &len);
 425     return r == ERROR_SUCCESS && type == REG_DWORD;
 426 }
 427
 428 static WCHAR *get_user_sid(void)
 429 {
 430     HANDLE token;
 431     DWORD size = 256;
 432     TOKEN_USER *user;
 433     WCHAR *ret;
 434
 435     if (!OpenProcessToken( GetCurrentProcess(), TOKEN_QUERY, &token )) return NULL;
 436     if (!(user = msi_alloc( size )))
 437     {
 438         CloseHandle( token );
 439         return NULL;
 440     }
 441     if (!GetTokenInformation( token, TokenUser, user, size, &size ))
 442     {
 443         msi_free( user );
 444         if (GetLastError() != ERROR_INSUFFICIENT_BUFFER || !(user = msi_alloc( size )))
 445         {
 446             CloseHandle( token );
 447             return NULL;
 448         }
 449         GetTokenInformation( token, TokenUser, user, size, &size );
 450     }
 451     CloseHandle( token );
 452     if (!ConvertSidToStringSidW( user->User.Sid, &ret ))
 453     {
 454         msi_free( user );
 455         return NULL;
 456     }
 457     msi_free( user );
 458     return ret;
 459 }
 460
 461 UINT MSIREG_OpenUninstallKey(const WCHAR *product, enum platform platform, HKEY *key, BOOL create)
 462 {
 463     WCHAR keypath[0x200];
 464
 465     TRACE("%s\n", debugstr_w(product));
 466
 467     if (is_64bit && platform == PLATFORM_INTEL)
 468     {
 469         strcpyW(keypath, szUninstall_32node);
 470         strcatW(keypath, product);
 471     }
 472     else
 473     {
 474         strcpyW(keypath, szUninstall);
 475         strcatW(keypath, product);
 476     }
 477     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, KEY_ALL_ACCESS, NULL, key, NULL);
 478     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, KEY_ALL_ACCESS, key);
 479 }
 480
 481 UINT MSIREG_DeleteUninstallKey(const WCHAR *product, enum platform platform)
 482 {
 483     WCHAR keypath[0x200];
 484
 485     TRACE("%s\n", debugstr_w(product));
 486
 487     if (is_64bit && platform == PLATFORM_INTEL)
 488     {
 489         strcpyW(keypath, szUninstall_32node);
 490         strcatW(keypath, product);
 491     }
 492     else
 493     {
 494         strcpyW(keypath, szUninstall);
 495         strcatW(keypath, product);
 496     }
 497     return RegDeleteTreeW(HKEY_LOCAL_MACHINE, keypath);
 498 }
 499
 500 UINT MSIREG_OpenProductKey(LPCWSTR szProduct, LPCWSTR szUserSid, MSIINSTALLCONTEXT context, HKEY *key, BOOL create)
 501 {
 502     LPWSTR usersid = NULL;
 503     HKEY root = HKEY_LOCAL_MACHINE;
 504     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 505     WCHAR squished_pc[GUID_SIZE], keypath[MAX_PATH];
 506
 507     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 508     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 509
 510     if (context == MSIINSTALLCONTEXT_MACHINE)
 511     {
 512         strcpyW(keypath, szInstaller_LocalClassesProd);
 513         strcatW(keypath, squished_pc);
 514     }
 515     else if (context == MSIINSTALLCONTEXT_USERUNMANAGED)
 516     {
 517         root = HKEY_CURRENT_USER;
 518         strcpyW(keypath, szUserProducts);
 519         strcatW(keypath, squished_pc);
 520     }
 521     else
 522     {
 523         if (!szUserSid)
 524         {
 525             if (!(usersid = get_user_sid()))
 526             {
 527                 ERR("Failed to retrieve user SID\n");
 528                 return ERROR_FUNCTION_FAILED;
 529             }
 530             szUserSid = usersid;
 531         }
 532         sprintfW(keypath, szInstaller_LocalManagedProd_fmt, szUserSid, squished_pc);
 533         LocalFree(usersid);
 534     }
 535     if (create) return RegCreateKeyExW(root, keypath, 0, NULL, 0, access, NULL, key, NULL);
 536     return RegOpenKeyExW(root, keypath, 0, access, key);
 537 }
 538
 539 UINT MSIREG_DeleteUserProductKey(LPCWSTR szProduct)
 540 {
 541     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 542
 543     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 544     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 545
 546     strcpyW(keypath, szUserProducts);
 547     strcatW(keypath, squished_pc);
 548     return RegDeleteTreeW(HKEY_CURRENT_USER, keypath);
 549 }
 550
 551 UINT MSIREG_OpenUserPatchesKey(LPCWSTR szPatch, HKEY *key, BOOL create)
 552 {
 553     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 554
 555     if (!squash_guid(szPatch, squished_pc)) return ERROR_FUNCTION_FAILED;
 556     TRACE("%s squished %s\n", debugstr_w(szPatch), debugstr_w(squished_pc));
 557
 558     strcpyW(keypath, szUserPatches);
 559     strcatW(keypath, squished_pc);
 560
 561     if (create) return RegCreateKeyW(HKEY_CURRENT_USER, keypath, key);
 562     return RegOpenKeyW(HKEY_CURRENT_USER, keypath, key);
 563 }
 564
 565 UINT MSIREG_OpenFeaturesKey(LPCWSTR szProduct, LPCWSTR szUserSid, MSIINSTALLCONTEXT context,
 566                             HKEY *key, BOOL create)
 567 {
 568     HKEY root = HKEY_LOCAL_MACHINE;
 569     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 570     WCHAR squished_pc[GUID_SIZE], keypath[MAX_PATH], *usersid = NULL;
 571
 572     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 573     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 574
 575     if (context == MSIINSTALLCONTEXT_MACHINE)
 576     {
 577         strcpyW(keypath, szInstaller_LocalClassesFeat);
 578         strcatW(keypath, squished_pc);
 579     }
 580     else if (context == MSIINSTALLCONTEXT_USERUNMANAGED)
 581     {
 582         root = HKEY_CURRENT_USER;
 583         strcpyW(keypath, szUserFeatures);
 584         strcatW(keypath, squished_pc);
 585     }
 586     else
 587     {
 588         if (!szUserSid)
 589         {
 590             if (!(usersid = get_user_sid()))
 591             {
 592                 ERR("Failed to retrieve user SID\n");
 593                 return ERROR_FUNCTION_FAILED;
 594             }
 595             szUserSid = usersid;
 596         }
 597         sprintfW(keypath, szInstaller_LocalManagedFeat_fmt, szUserSid, squished_pc);
 598         LocalFree(usersid);
 599     }
 600     if (create) return RegCreateKeyExW(root, keypath, 0, NULL, 0, access, NULL, key, NULL);
 601     return RegOpenKeyExW(root, keypath, 0, access, key);
 602 }
 603
 604 UINT MSIREG_DeleteUserFeaturesKey(LPCWSTR szProduct)
 605 {
 606     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 607
 608     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 609     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 610
 611     strcpyW(keypath, szUserFeatures);
 612     strcatW(keypath, squished_pc);
 613     return RegDeleteTreeW(HKEY_CURRENT_USER, keypath);
 614 }
 615
 616 static UINT MSIREG_OpenInstallerFeaturesKey(LPCWSTR szProduct, HKEY *key, BOOL create)
 617 {
 618     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 619     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 620
 621     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 622     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 623
 624     strcpyW(keypath, szInstaller_Features);
 625     strcatW(keypath, squished_pc);
 626
 627     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 628     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 629 }
 630
 631 UINT MSIREG_OpenUserDataFeaturesKey(LPCWSTR szProduct, LPCWSTR szUserSid, MSIINSTALLCONTEXT context,
 632                                     HKEY *key, BOOL create)
 633 {
 634     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 635     WCHAR squished_pc[GUID_SIZE], keypath[0x200], *usersid = NULL;
 636
 637     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 638     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 639
 640     if (context == MSIINSTALLCONTEXT_MACHINE)
 641     {
 642         sprintfW(keypath, szUserDataFeatures_fmt, szLocalSid, squished_pc);
 643     }
 644     else
 645     {
 646         if (!szUserSid)
 647         {
 648             if (!(usersid = get_user_sid()))
 649             {
 650                 ERR("Failed to retrieve user SID\n");
 651                 return ERROR_FUNCTION_FAILED;
 652             }
 653             szUserSid = usersid;
 654         }
 655         sprintfW(keypath, szUserDataFeatures_fmt, szUserSid, squished_pc);
 656         LocalFree(usersid);
 657     }
 658     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 659     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 660 }
 661
 662 UINT MSIREG_OpenUserComponentsKey(LPCWSTR szComponent, HKEY *key, BOOL create)
 663 {
 664     WCHAR squished_cc[GUID_SIZE], keypath[0x200];
 665
 666     if (!squash_guid(szComponent, squished_cc)) return ERROR_FUNCTION_FAILED;
 667     TRACE("%s squished %s\n", debugstr_w(szComponent), debugstr_w(squished_cc));
 668
 669     strcpyW(keypath, szUserComponents);
 670     strcatW(keypath, squished_cc);
 671
 672     if (create) return RegCreateKeyW(HKEY_CURRENT_USER, keypath, key);
 673     return RegOpenKeyW(HKEY_CURRENT_USER, keypath, key);
 674 }
 675
 676 UINT MSIREG_OpenUserDataComponentKey(LPCWSTR szComponent, LPCWSTR szUserSid, HKEY *key, BOOL create)
 677 {
 678     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 679     WCHAR comp[GUID_SIZE], keypath[0x200];
 680     LPWSTR usersid;
 681
 682     if (!squash_guid(szComponent, comp)) return ERROR_FUNCTION_FAILED;
 683     TRACE("%s squished %s\n", debugstr_w(szComponent), debugstr_w(comp));
 684
 685     if (!szUserSid)
 686     {
 687         if (!(usersid = get_user_sid()))
 688         {
 689             ERR("Failed to retrieve user SID\n");
 690             return ERROR_FUNCTION_FAILED;
 691         }
 692         sprintfW(keypath, szUserDataComp_fmt, usersid, comp);
 693         LocalFree(usersid);
 694     }
 695     else
 696         sprintfW(keypath, szUserDataComp_fmt, szUserSid, comp);
 697
 698     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 699     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 700 }
 701
 702 UINT MSIREG_DeleteUserDataComponentKey(LPCWSTR szComponent, LPCWSTR szUserSid)
 703 {
 704     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 705     WCHAR comp[GUID_SIZE], keypath[0x200];
 706     LPWSTR usersid;
 707     HKEY hkey;
 708     LONG r;
 709
 710     if (!squash_guid(szComponent, comp)) return ERROR_FUNCTION_FAILED;
 711     TRACE("%s squished %s\n", debugstr_w(szComponent), debugstr_w(comp));
 712
 713     if (!szUserSid)
 714     {
 715         if (!(usersid = get_user_sid()))
 716         {
 717             ERR("Failed to retrieve user SID\n");
 718             return ERROR_FUNCTION_FAILED;
 719         }
 720         sprintfW(keypath, szUserDataComponents_fmt, usersid);
 721         LocalFree(usersid);
 722     }
 723     else
 724         sprintfW(keypath, szUserDataComponents_fmt, szUserSid);
 725
 726     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, &hkey)) return ERROR_SUCCESS;
 727     r = RegDeleteTreeW(hkey, comp);
 728     RegCloseKey(hkey);
 729     return r;
 730 }
 731
 732 UINT MSIREG_OpenUserDataProductKey(LPCWSTR szProduct, MSIINSTALLCONTEXT dwContext, LPCWSTR szUserSid, HKEY *key, BOOL create)
 733 {
 734     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 735     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 736     LPWSTR usersid;
 737
 738     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 739     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 740
 741     if (dwContext == MSIINSTALLCONTEXT_MACHINE)
 742         sprintfW(keypath, szUserDataProd_fmt, szLocalSid, squished_pc);
 743     else if (szUserSid)
 744         sprintfW(keypath, szUserDataProd_fmt, szUserSid, squished_pc);
 745     else
 746     {
 747         if (!(usersid = get_user_sid()))
 748         {
 749             ERR("Failed to retrieve user SID\n");
 750             return ERROR_FUNCTION_FAILED;
 751         }
 752         sprintfW(keypath, szUserDataProd_fmt, usersid, squished_pc);
 753         LocalFree(usersid);
 754     }
 755     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 756     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 757 }
 758
 759 UINT MSIREG_OpenUserDataPatchKey(LPCWSTR szPatch, MSIINSTALLCONTEXT dwContext, HKEY *key, BOOL create)
 760 {
 761     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 762     WCHAR squished_patch[GUID_SIZE], keypath[0x200];
 763     LPWSTR usersid;
 764
 765     if (!squash_guid(szPatch, squished_patch)) return ERROR_FUNCTION_FAILED;
 766     TRACE("%s squished %s\n", debugstr_w(szPatch), debugstr_w(squished_patch));
 767
 768     if (dwContext == MSIINSTALLCONTEXT_MACHINE)
 769         sprintfW(keypath, szUserDataPatch_fmt, szLocalSid, squished_patch);
 770     else
 771     {
 772         if (!(usersid = get_user_sid()))
 773         {
 774             ERR("Failed to retrieve user SID\n");
 775             return ERROR_FUNCTION_FAILED;
 776         }
 777         sprintfW(keypath, szUserDataPatch_fmt, usersid, squished_patch);
 778         LocalFree(usersid);
 779     }
 780     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 781     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 782 }
 783
 784 UINT MSIREG_DeleteUserDataPatchKey(LPCWSTR patch, MSIINSTALLCONTEXT context)
 785 {
 786     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 787     WCHAR squished_patch[GUID_SIZE], keypath[0x200];
 788     LPWSTR usersid;
 789     HKEY hkey;
 790     LONG r;
 791
 792     if (!squash_guid(patch, squished_patch)) return ERROR_FUNCTION_FAILED;
 793     TRACE("%s squished %s\n", debugstr_w(patch), debugstr_w(squished_patch));
 794
 795     if (context == MSIINSTALLCONTEXT_MACHINE)
 796         sprintfW(keypath, szUserDataPatches_fmt, szLocalSid);
 797     else
 798     {
 799         if (!(usersid = get_user_sid()))
 800         {
 801             ERR("Failed to retrieve user SID\n");
 802             return ERROR_FUNCTION_FAILED;
 803         }
 804         sprintfW(keypath, szUserDataPatches_fmt, usersid);
 805         LocalFree(usersid);
 806     }
 807     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, &hkey)) return ERROR_SUCCESS;
 808     r = RegDeleteTreeW(hkey, squished_patch);
 809     RegCloseKey(hkey);
 810     return r;
 811 }
 812
 813 UINT MSIREG_OpenUserDataProductPatchesKey(LPCWSTR product, MSIINSTALLCONTEXT context, HKEY *key, BOOL create)
 814 {
 815     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 816     WCHAR squished_product[GUID_SIZE], keypath[0x200];
 817     LPWSTR usersid;
 818
 819     if (!squash_guid(product, squished_product)) return ERROR_FUNCTION_FAILED;
 820     TRACE("%s squished %s\n", debugstr_w(product), debugstr_w(squished_product));
 821
 822     if (context == MSIINSTALLCONTEXT_MACHINE)
 823         sprintfW(keypath, szUserDataProductPatches_fmt, szLocalSid, squished_product);
 824     else
 825     {
 826         if (!(usersid = get_user_sid()))
 827         {
 828             ERR("Failed to retrieve user SID\n");
 829             return ERROR_FUNCTION_FAILED;
 830         }
 831         sprintfW(keypath, szUserDataProductPatches_fmt, usersid, squished_product);
 832         LocalFree(usersid);
 833     }
 834     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 835     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 836 }
 837
 838 UINT MSIREG_OpenInstallProps(LPCWSTR szProduct, MSIINSTALLCONTEXT dwContext, LPCWSTR szUserSid, HKEY *key, BOOL create)
 839 {
 840     LPWSTR usersid;
 841     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 842     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 843
 844     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 845     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 846
 847     if (dwContext == MSIINSTALLCONTEXT_MACHINE)
 848         sprintfW(keypath, szInstallProperties_fmt, szLocalSid, squished_pc);
 849     else if (szUserSid)
 850         sprintfW(keypath, szInstallProperties_fmt, szUserSid, squished_pc);
 851     else
 852     {
 853         if (!(usersid = get_user_sid()))
 854         {
 855             ERR("Failed to retrieve user SID\n");
 856             return ERROR_FUNCTION_FAILED;
 857         }
 858         sprintfW(keypath, szInstallProperties_fmt, usersid, squished_pc);
 859         LocalFree(usersid);
 860     }
 861     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 862     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 863 }
 864
 865 UINT MSIREG_DeleteUserDataProductKey(LPCWSTR szProduct)
 866 {
 867     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 868     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 869     LPWSTR usersid;
 870     HKEY hkey;
 871     LONG r;
 872
 873     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 874     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 875
 876     if (!(usersid = get_user_sid()))
 877     {
 878         ERR("Failed to retrieve user SID\n");
 879         return ERROR_FUNCTION_FAILED;
 880     }
 881     sprintfW(keypath, szUserDataProducts_fmt, usersid);
 882     LocalFree(usersid);
 883
 884     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, &hkey)) return ERROR_SUCCESS;
 885     r = RegDeleteTreeW(hkey, squished_pc);
 886     RegCloseKey(hkey);
 887     return r;
 888 }
 889
 890 UINT MSIREG_DeleteProductKey(LPCWSTR szProduct)
 891 {
 892     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 893     WCHAR squished_pc[GUID_SIZE];
 894     HKEY hkey;
 895     LONG r;
 896
 897     if (!squash_guid(szProduct, squished_pc)) return ERROR_FUNCTION_FAILED;
 898     TRACE("%s squished %s\n", debugstr_w(szProduct), debugstr_w(squished_pc));
 899
 900     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, szInstaller_Products, 0, access, &hkey)) return ERROR_SUCCESS;
 901     r = RegDeleteTreeW(hkey, squished_pc);
 902     RegCloseKey(hkey);
 903     return r;
 904 }
 905
 906 UINT MSIREG_OpenPatchesKey(LPCWSTR szPatch, HKEY *key, BOOL create)
 907 {
 908     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 909     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 910
 911     if (!squash_guid(szPatch, squished_pc)) return ERROR_FUNCTION_FAILED;
 912     TRACE("%s squished %s\n", debugstr_w(szPatch), debugstr_w(squished_pc));
 913
 914     sprintfW(keypath, szInstaller_Patches, squished_pc);
 915
 916     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 917     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 918 }
 919
 920 UINT MSIREG_OpenUpgradeCodesKey(LPCWSTR szUpgradeCode, HKEY *key, BOOL create)
 921 {
 922     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 923     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 924
 925     if (!squash_guid(szUpgradeCode, squished_pc)) return ERROR_FUNCTION_FAILED;
 926     TRACE("%s squished %s\n", debugstr_w(szUpgradeCode), debugstr_w(squished_pc));
 927
 928     strcpyW(keypath, szInstaller_UpgradeCodes);
 929     strcatW(keypath, squished_pc);
 930
 931     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
 932     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
 933 }
 934
 935 UINT MSIREG_OpenUserUpgradeCodesKey(LPCWSTR szUpgradeCode, HKEY* key, BOOL create)
 936 {
 937     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 938
 939     if (!squash_guid(szUpgradeCode, squished_pc)) return ERROR_FUNCTION_FAILED;
 940     TRACE("%s squished %s\n", debugstr_w(szUpgradeCode), debugstr_w(squished_pc));
 941
 942     strcpyW(keypath, szInstaller_UserUpgradeCodes);
 943     strcatW(keypath, squished_pc);
 944
 945     if (create) return RegCreateKeyW(HKEY_CURRENT_USER, keypath, key);
 946     return RegOpenKeyW(HKEY_CURRENT_USER, keypath, key);
 947 }
 948
 949 UINT MSIREG_DeleteUserUpgradeCodesKey(LPCWSTR szUpgradeCode)
 950 {
 951     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 952
 953     if (!squash_guid(szUpgradeCode, squished_pc)) return ERROR_FUNCTION_FAILED;
 954     TRACE("%s squished %s\n", debugstr_w(szUpgradeCode), debugstr_w(squished_pc));
 955
 956     strcpyW(keypath, szInstaller_UserUpgradeCodes);
 957     strcatW(keypath, squished_pc);
 958     return RegDeleteTreeW(HKEY_CURRENT_USER, keypath);
 959 }
 960
 961 UINT MSIREG_DeleteLocalClassesProductKey(LPCWSTR szProductCode)
 962 {
 963     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 964     WCHAR squished_pc[GUID_SIZE];
 965     HKEY hkey;
 966     LONG r;
 967
 968     if (!squash_guid(szProductCode, squished_pc)) return ERROR_FUNCTION_FAILED;
 969     TRACE("%s squished %s\n", debugstr_w(szProductCode), debugstr_w(squished_pc));
 970
 971     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, szInstaller_LocalClassesProducts, 0, access, &hkey)) return ERROR_SUCCESS;
 972     r = RegDeleteTreeW(hkey, squished_pc);
 973     RegCloseKey(hkey);
 974     return r;
 975 }
 976
 977 UINT MSIREG_DeleteLocalClassesFeaturesKey(LPCWSTR szProductCode)
 978 {
 979     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 980     WCHAR squished_pc[GUID_SIZE];
 981     HKEY hkey;
 982     LONG r;
 983
 984     if (!squash_guid(szProductCode, squished_pc)) return ERROR_FUNCTION_FAILED;
 985     TRACE("%s squished %s\n", debugstr_w(szProductCode), debugstr_w(squished_pc));
 986
 987     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, szInstaller_LocalClassesFeatures, 0, access, &hkey)) return ERROR_SUCCESS;
 988     r = RegDeleteTreeW(hkey, squished_pc);
 989     RegCloseKey(hkey);
 990     return r;
 991 }
 992
 993 UINT MSIREG_OpenClassesUpgradeCodesKey(LPCWSTR szUpgradeCode, HKEY *key, BOOL create)
 994 {
 995     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
 996     WCHAR squished_pc[GUID_SIZE], keypath[0x200];
 997
 998     if (!squash_guid(szUpgradeCode, squished_pc)) return ERROR_FUNCTION_FAILED;
 999     TRACE("%s squished %s\n", debugstr_w(szUpgradeCode), debugstr_w(squished_pc));
1000
1001     strcpyW(keypath, szInstaller_ClassesUpgradeCode);
1002     strcatW(keypath, squished_pc);
1003
1004     if (create) return RegCreateKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, NULL, 0, access, NULL, key, NULL);
1005     return RegOpenKeyExW(HKEY_LOCAL_MACHINE, keypath, 0, access, key);
1006 }
1007
1008 UINT MSIREG_DeleteClassesUpgradeCodesKey(LPCWSTR szUpgradeCode)
1009 {
1010     REGSAM access = KEY_WOW64_64KEY | KEY_ALL_ACCESS;
1011     WCHAR squished_pc[GUID_SIZE];
1012     HKEY hkey;
1013     LONG r;
1014
1015     if (!squash_guid(szUpgradeCode, squished_pc)) return ERROR_FUNCTION_FAILED;
1016     TRACE("%s squished %s\n", debugstr_w(szUpgradeCode), debugstr_w(squished_pc));
1017
1018     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, szInstaller_ClassesUpgradeCodes, 0, access, &hkey)) return ERROR_SUCCESS;
1019     r = RegDeleteTreeW(hkey, squished_pc);
1020     RegCloseKey(hkey);
1021     return r;
1022 }
1023
1024 /*************************************************************************
1025  *  MsiDecomposeDescriptorW   [MSI.@]
1026  *
1027  * Decomposes an MSI descriptor into product, feature and component parts.
1028  * An MSI descriptor is a string of the form:
1029  *   [base 85 guid] [feature code] '>' [base 85 guid]
1030  *
1031  * PARAMS
1032  *   szDescriptor  [I]  the descriptor to decompose
1033  *   szProduct     [O]  buffer of MAX_FEATURE_CHARS+1 for the product guid
1034  *   szFeature     [O]  buffer of MAX_FEATURE_CHARS+1 for the feature code
1035  *   szComponent   [O]  buffer of MAX_FEATURE_CHARS+1 for the component guid
1036  *   pUsed         [O]  the length of the descriptor
1037  *
1038  * RETURNS
1039  *   ERROR_SUCCESS             if everything worked correctly
1040  *   ERROR_INVALID_PARAMETER   if the descriptor was invalid
1041  *
1042  */
1043 UINT WINAPI MsiDecomposeDescriptorW( LPCWSTR szDescriptor, LPWSTR szProduct,
1044                 LPWSTR szFeature, LPWSTR szComponent, LPDWORD pUsed )
1045 {
1046     UINT r, len;
1047     LPWSTR p;
1048     GUID product, component;
1049
1050     TRACE("%s %p %p %p %p\n", debugstr_w(szDescriptor), szProduct,
1051           szFeature, szComponent, pUsed);
1052
1053     r = decode_base85_guid( szDescriptor, &product );
1054     if( !r )
1055         return ERROR_INVALID_PARAMETER;
1056
1057     TRACE("product %s\n", debugstr_guid( &product ));
1058
1059     p = strchrW(&szDescriptor[20],'>');
1060     if( !p )
1061         return ERROR_INVALID_PARAMETER;
1062
1063     len = (p - &szDescriptor[20]);
1064     if( len > MAX_FEATURE_CHARS )
1065         return ERROR_INVALID_PARAMETER;
1066
1067     TRACE("feature %s\n", debugstr_wn( &szDescriptor[20], len ));
1068
1069     r = decode_base85_guid( p+1, &component );
1070     if( !r )
1071         return ERROR_INVALID_PARAMETER;
1072
1073     TRACE("component %s\n", debugstr_guid( &component ));
1074
1075     if (szProduct)
1076         StringFromGUID2( &product, szProduct, MAX_FEATURE_CHARS+1 );
1077     if (szComponent)
1078         StringFromGUID2( &component, szComponent, MAX_FEATURE_CHARS+1 );
1079     if (szFeature)
1080     {
1081         memcpy( szFeature, &szDescriptor[20], len*sizeof(WCHAR) );
1082         szFeature[len] = 0;
1083     }
1084     len = ( &p[21] - szDescriptor );
1085
1086     TRACE("length = %d\n", len);
1087     if (pUsed) *pUsed = len;
1088
1089     return ERROR_SUCCESS;
1090 }
1091
1092 UINT WINAPI MsiDecomposeDescriptorA( LPCSTR szDescriptor, LPSTR szProduct,
1093                 LPSTR szFeature, LPSTR szComponent, LPDWORD pUsed )
1094 {
1095     WCHAR product[MAX_FEATURE_CHARS+1];
1096     WCHAR feature[MAX_FEATURE_CHARS+1];
1097     WCHAR component[MAX_FEATURE_CHARS+1];
1098     LPWSTR str = NULL, p = NULL, f = NULL, c = NULL;
1099     UINT r;
1100
1101     TRACE("%s %p %p %p %p\n", debugstr_a(szDescriptor), szProduct,
1102           szFeature, szComponent, pUsed);
1103
1104     str = strdupAtoW( szDescriptor );
1105     if( szDescriptor && !str )
1106         return ERROR_OUTOFMEMORY;
1107
1108     if (szProduct)
1109         p = product;
1110     if (szFeature)
1111         f = feature;
1112     if (szComponent)
1113         c = component;
1114
1115     r = MsiDecomposeDescriptorW( str, p, f, c, pUsed );
1116
1117     if (r == ERROR_SUCCESS)
1118     {
1119         WideCharToMultiByte( CP_ACP, 0, p, -1,
1120                              szProduct, MAX_FEATURE_CHARS+1, NULL, NULL );
1121         WideCharToMultiByte( CP_ACP, 0, f, -1,
1122                              szFeature, MAX_FEATURE_CHARS+1, NULL, NULL );
1123         WideCharToMultiByte( CP_ACP, 0, c, -1,
1124                              szComponent, MAX_FEATURE_CHARS+1, NULL, NULL );
1125     }
1126
1127     msi_free( str );
1128
1129     return r;
1130 }
1131
1132 UINT WINAPI MsiEnumProductsA(DWORD index, LPSTR lpguid)
1133 {
1134     DWORD r;
1135     WCHAR szwGuid[GUID_SIZE];
1136
1137     TRACE("%d %p\n", index, lpguid);
1138
1139     if (NULL == lpguid)
1140         return ERROR_INVALID_PARAMETER;
1141     r = MsiEnumProductsW(index, szwGuid);
1142     if( r == ERROR_SUCCESS )
1143         WideCharToMultiByte(CP_ACP, 0, szwGuid, -1, lpguid, GUID_SIZE, NULL, NULL);
1144
1145     return r;
1146 }
1147
1148 UINT WINAPI MsiEnumProductsW(DWORD index, LPWSTR lpguid)
1149 {
1150     TRACE("%d %p\n", index, lpguid);
1151
1152     if (NULL == lpguid)
1153         return ERROR_INVALID_PARAMETER;
1154
1155     return MsiEnumProductsExW( NULL, szAllSid, MSIINSTALLCONTEXT_ALL, index, lpguid,
1156                                NULL, NULL, NULL );
1157 }
1158
1159 UINT WINAPI MsiEnumFeaturesA(LPCSTR szProduct, DWORD index,
1160       LPSTR szFeature, LPSTR szParent)
1161 {
1162     DWORD r;
1163     WCHAR szwFeature[GUID_SIZE], szwParent[GUID_SIZE];
1164     LPWSTR szwProduct = NULL;
1165
1166     TRACE("%s %d %p %p\n", debugstr_a(szProduct), index, szFeature, szParent);
1167
1168     if( szProduct )
1169     {
1170         szwProduct = strdupAtoW( szProduct );
1171         if( !szwProduct )
1172             return ERROR_OUTOFMEMORY;
1173     }
1174
1175     r = MsiEnumFeaturesW(szwProduct, index, szwFeature, szwParent);
1176     if( r == ERROR_SUCCESS )
1177     {
1178         WideCharToMultiByte(CP_ACP, 0, szwFeature, -1,
1179                             szFeature, GUID_SIZE, NULL, NULL);
1180         WideCharToMultiByte(CP_ACP, 0, szwParent, -1,
1181                             szParent, GUID_SIZE, NULL, NULL);
1182     }
1183
1184     msi_free( szwProduct);
1185
1186     return r;
1187 }
1188
1189 UINT WINAPI MsiEnumFeaturesW(LPCWSTR szProduct, DWORD index,
1190       LPWSTR szFeature, LPWSTR szParent)
1191 {
1192     HKEY hkeyProduct = 0;
1193     DWORD r, sz;
1194
1195     TRACE("%s %d %p %p\n", debugstr_w(szProduct), index, szFeature, szParent);
1196
1197     if( !szProduct )
1198         return ERROR_INVALID_PARAMETER;
1199
1200     r = MSIREG_OpenInstallerFeaturesKey(szProduct,&hkeyProduct,FALSE);
1201     if( r != ERROR_SUCCESS )
1202         return ERROR_NO_MORE_ITEMS;
1203
1204     sz = GUID_SIZE;
1205     r = RegEnumValueW(hkeyProduct, index, szFeature, &sz, NULL, NULL, NULL, NULL);
1206     RegCloseKey(hkeyProduct);
1207
1208     return r;
1209 }
1210
1211 UINT WINAPI MsiEnumComponentsA(DWORD index, LPSTR lpguid)
1212 {
1213     DWORD r;
1214     WCHAR szwGuid[GUID_SIZE];
1215
1216     TRACE("%u, %p\n", index, lpguid);
1217
1218     if (!lpguid) return ERROR_INVALID_PARAMETER;
1219
1220     r = MsiEnumComponentsW(index, szwGuid);
1221     if( r == ERROR_SUCCESS )
1222         WideCharToMultiByte(CP_ACP, 0, szwGuid, -1, lpguid, GUID_SIZE, NULL, NULL);
1223
1224     return r;
1225 }
1226
1227 UINT WINAPI MsiEnumComponentsW(DWORD index, LPWSTR lpguid)
1228 {
1229     TRACE("%u, %p\n", index, lpguid);
1230
1231     if (!lpguid) return ERROR_INVALID_PARAMETER;
1232
1233     return MsiEnumComponentsExW( szAllSid, MSIINSTALLCONTEXT_ALL, index, lpguid, NULL, NULL, NULL );
1234 }
1235
1236 UINT WINAPI MsiEnumComponentsExA( LPCSTR user_sid, DWORD ctx, DWORD index, CHAR guid[39],
1237                                   MSIINSTALLCONTEXT *installed_ctx, LPSTR sid, LPDWORD sid_len )
1238 {
1239     UINT r;
1240     WCHAR *user_sidW = NULL, *sidW = NULL, guidW[GUID_SIZE];
1241
1242     TRACE("%s, %u, %u, %p, %p, %p, %p\n", debugstr_a(user_sid), ctx, index, guid, installed_ctx,
1243           sid, sid_len);
1244
1245     if (sid && !sid_len) return ERROR_INVALID_PARAMETER;
1246     if (user_sid && !(user_sidW = strdupAtoW( user_sid ))) return ERROR_OUTOFMEMORY;
1247     if (sid && !(sidW = msi_alloc( *sid_len * sizeof(WCHAR) )))
1248     {
1249         msi_free( user_sidW );
1250         return ERROR_OUTOFMEMORY;
1251     }
1252     r = MsiEnumComponentsExW( user_sidW, ctx, index, guidW, installed_ctx, sidW, sid_len );
1253     if (r == ERROR_SUCCESS)
1254     {
1255         if (guid) WideCharToMultiByte( CP_ACP, 0, guidW, GUID_SIZE, guid, GUID_SIZE, NULL, NULL );
1256         if (sid) WideCharToMultiByte( CP_ACP, 0, sidW, *sid_len + 1, sid, *sid_len + 1, NULL, NULL );
1257     }
1258     msi_free( user_sidW );
1259     msi_free( sidW );
1260     return r;
1261 }
1262
1263 static UINT fetch_machine_component( DWORD ctx, DWORD index, DWORD *idx, WCHAR guid[39],
1264                                      MSIINSTALLCONTEXT *installed_ctx, LPWSTR sid, LPDWORD sid_len )
1265 {
1266     static const WCHAR componentsW[] =
1267         {'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
1268          'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
1269          'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a','\\',
1270          'S','-','1','-','5','-','1','8','\\','C','o','m','p','o','n','e','n','t','s',0};
1271     UINT r = ERROR_SUCCESS;
1272     WCHAR component[GUID_SIZE];
1273     DWORD i = 0, len_component;
1274     REGSAM access = KEY_ENUMERATE_SUB_KEYS | KEY_WOW64_64KEY;
1275     HKEY key_components;
1276
1277     if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, componentsW, 0, access, &key_components ))
1278         return ERROR_NO_MORE_ITEMS;
1279
1280     len_component = sizeof(component)/sizeof(component[0]);
1281     while (!RegEnumKeyExW( key_components, i, component, &len_component, NULL, NULL, NULL, NULL ))
1282     {
1283         if (*idx == index) goto found;
1284         (*idx)++;
1285         len_component = sizeof(component)/sizeof(component[0]);
1286         i++;
1287     }
1288     RegCloseKey( key_components );
1289     return ERROR_NO_MORE_ITEMS;
1290
1291 found:
1292     if (sid_len)
1293     {
1294         if (*sid_len < 1)
1295         {
1296             *sid_len = 1;
1297             r = ERROR_MORE_DATA;
1298         }
1299         else if (sid)
1300         {
1301             *sid_len = 0;
1302             sid[0] = 0;
1303         }
1304     }
1305     if (guid) unsquash_guid( component, guid );
1306     if (installed_ctx) *installed_ctx = MSIINSTALLCONTEXT_MACHINE;
1307     RegCloseKey( key_components );
1308     return r;
1309 }
1310
1311 static UINT fetch_user_component( const WCHAR *usersid, DWORD ctx, DWORD index, DWORD *idx,
1312                                   WCHAR guid[39], MSIINSTALLCONTEXT *installed_ctx, LPWSTR sid,
1313                                   LPDWORD sid_len )
1314 {
1315     static const WCHAR userdataW[] =
1316         {'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
1317          'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
1318          'I','n','s','t','a','l','l','e','r','\\','U','s','e','r','D','a','t','a',0};
1319     static const WCHAR componentsW[] = {'\\','C','o','m','p','o','n','e','n','t','s',0};
1320     UINT r = ERROR_SUCCESS;
1321     WCHAR path[MAX_PATH], component[GUID_SIZE], user[128];
1322     DWORD i = 0, j = 0, len_component, len_user;
1323     REGSAM access = KEY_ENUMERATE_SUB_KEYS | KEY_WOW64_64KEY;
1324     HKEY key_users, key_components;
1325
1326     if (ctx == MSIINSTALLCONTEXT_USERMANAGED) /* FIXME: were to find these? */
1327         return ERROR_NO_MORE_ITEMS;
1328
1329     if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, userdataW, 0, access, &key_users ))
1330         return ERROR_NO_MORE_ITEMS;
1331
1332     len_user = sizeof(user)/sizeof(user[0]);
1333     while (!RegEnumKeyExW( key_users, i, user, &len_user, NULL, NULL, NULL, NULL ))
1334     {
1335         if ((strcmpW( usersid, szAllSid ) && strcmpW( usersid, user )) ||
1336             !strcmpW( szLocalSid, user ))
1337         {
1338             i++;
1339             len_user = sizeof(user)/sizeof(user[0]);
1340             continue;
1341         }
1342         strcpyW( path, user );
1343         strcatW( path, componentsW );
1344         if (RegOpenKeyExW( key_users, path, 0, access, &key_components ))
1345         {
1346             i++;
1347             len_user = sizeof(user)/sizeof(user[0]);
1348             continue;
1349         }
1350         len_component = sizeof(component)/sizeof(component[0]);
1351         while (!RegEnumKeyExW( key_components, j, component, &len_component, NULL, NULL, NULL, NULL ))
1352         {
1353             if (*idx == index) goto found;
1354             (*idx)++;
1355             len_component = sizeof(component)/sizeof(component[0]);
1356             j++;
1357         }
1358         RegCloseKey( key_components );
1359         len_user = sizeof(user)/sizeof(user[0]);
1360         i++;
1361     }
1362     RegCloseKey( key_users );
1363     return ERROR_NO_MORE_ITEMS;
1364
1365 found:
1366     if (sid_len)
1367     {
1368         if (*sid_len < len_user + 1)
1369         {
1370             *sid_len = len_user + 1;
1371             r = ERROR_MORE_DATA;
1372         }
1373         else if (sid)
1374         {
1375             *sid_len = len_user;
1376             strcpyW( sid, user );
1377         }
1378     }
1379     if (guid) unsquash_guid( component, guid );
1380     if (installed_ctx) *installed_ctx = ctx;
1381     RegCloseKey( key_components );
1382     RegCloseKey( key_users );
1383     return r;
1384 }
1385
1386 static UINT enum_components( const WCHAR *usersid, DWORD ctx, DWORD index, DWORD *idx, WCHAR guid[39],
1387                              MSIINSTALLCONTEXT *installed_ctx, LPWSTR sid, LPDWORD sid_len )
1388 {
1389     UINT r = ERROR_NO_MORE_ITEMS;
1390     WCHAR *user = NULL;
1391
1392     if (!usersid)
1393     {
1394         usersid = user = get_user_sid();
1395         if (!user) return ERROR_FUNCTION_FAILED;
1396     }
1397     if (ctx & MSIINSTALLCONTEXT_USERMANAGED)
1398     {
1399         r = fetch_user_component( usersid, MSIINSTALLCONTEXT_USERMANAGED, index, idx, guid,
1400                                   installed_ctx, sid, sid_len );
1401         if (r != ERROR_NO_MORE_ITEMS) goto done;
1402     }
1403     if (ctx & MSIINSTALLCONTEXT_USERUNMANAGED)
1404     {
1405         r = fetch_user_component( usersid, MSIINSTALLCONTEXT_USERUNMANAGED, index, idx, guid,
1406                                   installed_ctx, sid, sid_len );
1407         if (r != ERROR_NO_MORE_ITEMS) goto done;
1408     }
1409     if (ctx & MSIINSTALLCONTEXT_MACHINE)
1410     {
1411         r = fetch_machine_component( MSIINSTALLCONTEXT_MACHINE, index, idx, guid, installed_ctx,
1412                                      sid, sid_len );
1413         if (r != ERROR_NO_MORE_ITEMS) goto done;
1414     }
1415
1416 done:
1417     LocalFree( user );
1418     return r;
1419 }
1420
1421 UINT WINAPI MsiEnumComponentsExW( LPCWSTR user_sid, DWORD ctx, DWORD index, WCHAR guid[39],
1422                                   MSIINSTALLCONTEXT *installed_ctx, LPWSTR sid, LPDWORD sid_len )
1423 {
1424     UINT r;
1425     DWORD idx = 0;
1426     static DWORD last_index;
1427
1428     TRACE("%s, %u, %u, %p, %p, %p, %p\n", debugstr_w(user_sid), ctx, index, guid, installed_ctx,
1429           sid, sid_len);
1430
1431     if ((sid && !sid_len) || !ctx || (user_sid && ctx == MSIINSTALLCONTEXT_MACHINE))
1432         return ERROR_INVALID_PARAMETER;
1433
1434     if (index && index - last_index != 1)
1435         return ERROR_INVALID_PARAMETER;
1436
1437     if (!index) last_index = 0;
1438
1439     r = enum_components( user_sid, ctx, index, &idx, guid, installed_ctx, sid, sid_len );
1440     if (r == ERROR_SUCCESS)
1441         last_index = index;
1442     else
1443         last_index = 0;
1444
1445     return r;
1446 }
1447
1448 UINT WINAPI MsiEnumClientsA(LPCSTR szComponent, DWORD index, LPSTR szProduct)
1449 {
1450     DWORD r;
1451     WCHAR szwProduct[GUID_SIZE];
1452     LPWSTR szwComponent = NULL;
1453
1454     TRACE("%s %d %p\n", debugstr_a(szComponent), index, szProduct);
1455
1456     if ( !szProduct )
1457         return ERROR_INVALID_PARAMETER;
1458
1459     if( szComponent )
1460     {
1461         szwComponent = strdupAtoW( szComponent );
1462         if( !szwComponent )
1463             return ERROR_OUTOFMEMORY;
1464     }
1465
1466     r = MsiEnumClientsW(szComponent?szwComponent:NULL, index, szwProduct);
1467     if( r == ERROR_SUCCESS )
1468     {
1469         WideCharToMultiByte(CP_ACP, 0, szwProduct, -1,
1470                             szProduct, GUID_SIZE, NULL, NULL);
1471     }
1472
1473     msi_free( szwComponent);
1474
1475     return r;
1476 }
1477
1478 UINT WINAPI MsiEnumClientsW(LPCWSTR szComponent, DWORD index, LPWSTR szProduct)
1479 {
1480     HKEY hkeyComp = 0;
1481     DWORD r, sz;
1482     WCHAR szValName[SQUISH_GUID_SIZE];
1483
1484     TRACE("%s %d %p\n", debugstr_w(szComponent), index, szProduct);
1485
1486     if (!szComponent || !*szComponent || !szProduct)
1487         return ERROR_INVALID_PARAMETER;
1488
1489     if (MSIREG_OpenUserDataComponentKey(szComponent, NULL, &hkeyComp, FALSE) != ERROR_SUCCESS &&
1490         MSIREG_OpenUserDataComponentKey(szComponent, szLocalSid, &hkeyComp, FALSE) != ERROR_SUCCESS)
1491         return ERROR_UNKNOWN_COMPONENT;
1492
1493     /* see if there are any products at all */
1494     sz = SQUISH_GUID_SIZE;
1495     r = RegEnumValueW(hkeyComp, 0, szValName, &sz, NULL, NULL, NULL, NULL);
1496     if (r != ERROR_SUCCESS)
1497     {
1498         RegCloseKey(hkeyComp);
1499
1500         if (index != 0)
1501             return ERROR_INVALID_PARAMETER;
1502
1503         return ERROR_UNKNOWN_COMPONENT;
1504     }
1505
1506     sz = SQUISH_GUID_SIZE;
1507     r = RegEnumValueW(hkeyComp, index, szValName, &sz, NULL, NULL, NULL, NULL);
1508     if( r == ERROR_SUCCESS )
1509     {
1510         unsquash_guid(szValName, szProduct);
1511         TRACE("-> %s\n", debugstr_w(szProduct));
1512     }
1513     RegCloseKey(hkeyComp);
1514     return r;
1515 }
1516
1517 static UINT MSI_EnumComponentQualifiers( LPCWSTR szComponent, DWORD iIndex,
1518                 awstring *lpQualBuf, LPDWORD pcchQual,
1519                 awstring *lpAppBuf, LPDWORD pcchAppBuf )
1520 {
1521     DWORD name_sz, val_sz, name_max, val_max, type, ofs;
1522     LPWSTR name = NULL, val = NULL;
1523     UINT r, r2;
1524     HKEY key;
1525
1526     TRACE("%s %08x %p %p %p %p\n", debugstr_w(szComponent), iIndex,
1527           lpQualBuf, pcchQual, lpAppBuf, pcchAppBuf);
1528
1529     if (!szComponent)
1530         return ERROR_INVALID_PARAMETER;
1531
1532     r = MSIREG_OpenUserComponentsKey( szComponent, &key, FALSE );
1533     if (r != ERROR_SUCCESS)
1534         return ERROR_UNKNOWN_COMPONENT;
1535
1536     /* figure out how big the name is we want to return */
1537     name_max = 0x10;
1538     r = ERROR_OUTOFMEMORY;
1539     name = msi_alloc( name_max * sizeof(WCHAR) );
1540     if (!name)
1541         goto end;
1542
1543     val_max = 0x10;
1544     r = ERROR_OUTOFMEMORY;
1545     val = msi_alloc( val_max );
1546     if (!val)
1547         goto end;
1548
1549     /* loop until we allocate enough memory */
1550     while (1)
1551     {
1552         name_sz = name_max;
1553         val_sz = val_max;
1554         r = RegEnumValueW( key, iIndex, name, &name_sz,
1555                            NULL, &type, (LPBYTE)val, &val_sz );
1556         if (r == ERROR_SUCCESS)
1557             break;
1558         if (r != ERROR_MORE_DATA)
1559             goto end;
1560
1561         if (type != REG_MULTI_SZ)
1562         {
1563             ERR("component data has wrong type (%d)\n", type);
1564             goto end;
1565         }
1566
1567         r = ERROR_OUTOFMEMORY;
1568         if (name_sz + 1 >= name_max)
1569         {
1570             name_max *= 2;
1571             msi_free( name );
1572             name = msi_alloc( name_max * sizeof (WCHAR) );
1573             if (!name)
1574                 goto end;
1575             continue;
1576         }
1577         if (val_sz > val_max)
1578         {
1579             val_max = val_sz + sizeof (WCHAR);
1580             msi_free( val );
1581             val = msi_alloc( val_max * sizeof (WCHAR) );
1582             if (!val)
1583                 goto end;
1584             continue;
1585         }
1586         ERR("should be enough data, but isn't %d %d\n", name_sz, val_sz );
1587         goto end;
1588     }
1589
1590     ofs = 0;
1591     r = MsiDecomposeDescriptorW( val, NULL, NULL, NULL, &ofs );
1592     if (r != ERROR_SUCCESS)
1593         goto end;
1594
1595     TRACE("Providing %s and %s\n", debugstr_w(name), debugstr_w(val+ofs));
1596
1597     r = msi_strcpy_to_awstring( name, -1, lpQualBuf, pcchQual );
1598     r2 = msi_strcpy_to_awstring( val+ofs, -1, lpAppBuf, pcchAppBuf );
1599
1600     if (r2 != ERROR_SUCCESS)
1601         r = r2;
1602
1603 end:
1604     msi_free(val);
1605     msi_free(name);
1606     RegCloseKey(key);
1607     return r;
1608 }
1609
1610 /*************************************************************************
1611  *  MsiEnumComponentQualifiersA [MSI.@]
1612  */
1613 UINT WINAPI MsiEnumComponentQualifiersA( LPCSTR szComponent, DWORD iIndex,
1614                 LPSTR lpQualifierBuf, LPDWORD pcchQualifierBuf,
1615                 LPSTR lpApplicationDataBuf, LPDWORD pcchApplicationDataBuf )
1616 {
1617     awstring qual, appdata;
1618     LPWSTR comp;
1619     UINT r;
1620
1621     TRACE("%s %08x %p %p %p %p\n", debugstr_a(szComponent), iIndex,
1622           lpQualifierBuf, pcchQualifierBuf, lpApplicationDataBuf,
1623           pcchApplicationDataBuf);
1624
1625     comp = strdupAtoW( szComponent );
1626     if (szComponent && !comp)
1627         return ERROR_OUTOFMEMORY;
1628
1629     qual.unicode = FALSE;
1630     qual.str.a = lpQualifierBuf;
1631
1632     appdata.unicode = FALSE;
1633     appdata.str.a = lpApplicationDataBuf;
1634
1635     r = MSI_EnumComponentQualifiers( comp, iIndex,
1636               &qual, pcchQualifierBuf, &appdata, pcchApplicationDataBuf );
1637     msi_free( comp );
1638     return r;
1639 }
1640
1641 /*************************************************************************
1642  *  MsiEnumComponentQualifiersW [MSI.@]
1643  */
1644 UINT WINAPI MsiEnumComponentQualifiersW( LPCWSTR szComponent, DWORD iIndex,
1645                 LPWSTR lpQualifierBuf, LPDWORD pcchQualifierBuf,
1646                 LPWSTR lpApplicationDataBuf, LPDWORD pcchApplicationDataBuf )
1647 {
1648     awstring qual, appdata;
1649
1650     TRACE("%s %08x %p %p %p %p\n", debugstr_w(szComponent), iIndex,
1651           lpQualifierBuf, pcchQualifierBuf, lpApplicationDataBuf,
1652           pcchApplicationDataBuf);
1653
1654     qual.unicode = TRUE;
1655     qual.str.w = lpQualifierBuf;
1656
1657     appdata.unicode = TRUE;
1658     appdata.str.w = lpApplicationDataBuf;
1659
1660     return MSI_EnumComponentQualifiers( szComponent, iIndex,
1661                  &qual, pcchQualifierBuf, &appdata, pcchApplicationDataBuf );
1662 }
1663
1664 /*************************************************************************
1665  *  MsiEnumRelatedProductsW   [MSI.@]
1666  *
1667  */
1668 UINT WINAPI MsiEnumRelatedProductsW(LPCWSTR szUpgradeCode, DWORD dwReserved,
1669                                     DWORD iProductIndex, LPWSTR lpProductBuf)
1670 {
1671     UINT r;
1672     HKEY hkey;
1673     DWORD dwSize = SQUISH_GUID_SIZE;
1674     WCHAR szKeyName[SQUISH_GUID_SIZE];
1675
1676     TRACE("%s %u %u %p\n", debugstr_w(szUpgradeCode), dwReserved,
1677           iProductIndex, lpProductBuf);
1678
1679     if (NULL == szUpgradeCode)
1680         return ERROR_INVALID_PARAMETER;
1681     if (NULL == lpProductBuf)
1682         return ERROR_INVALID_PARAMETER;
1683
1684     r = MSIREG_OpenUpgradeCodesKey(szUpgradeCode, &hkey, FALSE);
1685     if (r != ERROR_SUCCESS)
1686         return ERROR_NO_MORE_ITEMS;
1687
1688     r = RegEnumValueW(hkey, iProductIndex, szKeyName, &dwSize, NULL, NULL, NULL, NULL);
1689     if( r == ERROR_SUCCESS )
1690         unsquash_guid(szKeyName, lpProductBuf);
1691     RegCloseKey(hkey);
1692
1693     return r;
1694 }
1695
1696 /*************************************************************************
1697  *  MsiEnumRelatedProductsA   [MSI.@]
1698  *
1699  */
1700 UINT WINAPI MsiEnumRelatedProductsA(LPCSTR szUpgradeCode, DWORD dwReserved,
1701                                     DWORD iProductIndex, LPSTR lpProductBuf)
1702 {
1703     LPWSTR szwUpgradeCode = NULL;
1704     WCHAR productW[GUID_SIZE];
1705     UINT r;
1706
1707     TRACE("%s %u %u %p\n", debugstr_a(szUpgradeCode), dwReserved,
1708           iProductIndex, lpProductBuf);
1709
1710     if (szUpgradeCode)
1711     {
1712         szwUpgradeCode = strdupAtoW( szUpgradeCode );
1713         if( !szwUpgradeCode )
1714             return ERROR_OUTOFMEMORY;
1715     }
1716
1717     r = MsiEnumRelatedProductsW( szwUpgradeCode, dwReserved,
1718                                  iProductIndex, productW );
1719     if (r == ERROR_SUCCESS)
1720     {
1721         WideCharToMultiByte( CP_ACP, 0, productW, GUID_SIZE,
1722                              lpProductBuf, GUID_SIZE, NULL, NULL );
1723     }
1724     msi_free( szwUpgradeCode);
1725     return r;
1726 }
1727
1728 /***********************************************************************
1729  * MsiEnumPatchesExA            [MSI.@]
1730  */
1731 UINT WINAPI MsiEnumPatchesExA(LPCSTR szProductCode, LPCSTR szUserSid,
1732         DWORD dwContext, DWORD dwFilter, DWORD dwIndex, LPSTR szPatchCode,
1733         LPSTR szTargetProductCode, MSIINSTALLCONTEXT *pdwTargetProductContext,
1734         LPSTR szTargetUserSid, LPDWORD pcchTargetUserSid)
1735 {
1736     LPWSTR prodcode = NULL;
1737     LPWSTR usersid = NULL;
1738     LPWSTR targsid = NULL;
1739     WCHAR patch[GUID_SIZE];
1740     WCHAR targprod[GUID_SIZE];
1741     DWORD len;
1742     UINT r;
1743
1744     TRACE("(%s, %s, %d, %d, %d, %p, %p, %p, %p, %p)\n",
1745           debugstr_a(szProductCode), debugstr_a(szUserSid), dwContext, dwFilter,
1746           dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext,
1747           szTargetUserSid, pcchTargetUserSid);
1748
1749     if (szTargetUserSid && !pcchTargetUserSid)
1750         return ERROR_INVALID_PARAMETER;
1751
1752     if (szProductCode) prodcode = strdupAtoW(szProductCode);
1753     if (szUserSid) usersid = strdupAtoW(szUserSid);
1754
1755     r = MsiEnumPatchesExW(prodcode, usersid, dwContext, dwFilter, dwIndex,
1756                           patch, targprod, pdwTargetProductContext,
1757                           NULL, &len);
1758     if (r != ERROR_SUCCESS)
1759         goto done;
1760
1761     WideCharToMultiByte(CP_ACP, 0, patch, -1, szPatchCode,
1762                         GUID_SIZE, NULL, NULL);
1763     WideCharToMultiByte(CP_ACP, 0, targprod, -1, szTargetProductCode,
1764                         GUID_SIZE, NULL, NULL);
1765
1766     if (!szTargetUserSid)
1767     {
1768         if (pcchTargetUserSid)
1769             *pcchTargetUserSid = len;
1770
1771         goto done;
1772     }
1773
1774     targsid = msi_alloc(++len * sizeof(WCHAR));
1775     if (!targsid)
1776     {
1777         r = ERROR_OUTOFMEMORY;
1778         goto done;
1779     }
1780
1781     r = MsiEnumPatchesExW(prodcode, usersid, dwContext, dwFilter, dwIndex,
1782                           patch, targprod, pdwTargetProductContext,
1783                           targsid, &len);
1784     if (r != ERROR_SUCCESS || !szTargetUserSid)
1785         goto done;
1786
1787     WideCharToMultiByte(CP_ACP, 0, targsid, -1, szTargetUserSid,
1788                         *pcchTargetUserSid, NULL, NULL);
1789
1790     len = lstrlenW(targsid);
1791     if (*pcchTargetUserSid < len + 1)
1792     {
1793         r = ERROR_MORE_DATA;
1794         *pcchTargetUserSid = len * sizeof(WCHAR);
1795     }
1796     else
1797         *pcchTargetUserSid = len;
1798
1799 done:
1800     msi_free(prodcode);
1801     msi_free(usersid);
1802     msi_free(targsid);
1803
1804     return r;
1805 }
1806
1807 static UINT msi_get_patch_state(LPCWSTR prodcode, LPCWSTR usersid,
1808                                 MSIINSTALLCONTEXT context,
1809                                 LPWSTR patch, MSIPATCHSTATE *state)
1810 {
1811     DWORD type, val, size;
1812     HKEY prod, hkey = 0;
1813     HKEY udpatch = 0;
1814     LONG res;
1815     UINT r = ERROR_NO_MORE_ITEMS;
1816
1817     *state = MSIPATCHSTATE_INVALID;
1818
1819     r = MSIREG_OpenUserDataProductKey(prodcode, context,
1820                                       usersid, &prod, FALSE);
1821     if (r != ERROR_SUCCESS)
1822         return ERROR_NO_MORE_ITEMS;
1823
1824     res = RegOpenKeyExW(prod, szPatches, 0, KEY_READ, &hkey);
1825     if (res != ERROR_SUCCESS)
1826         goto done;
1827
1828     res = RegOpenKeyExW(hkey, patch, 0, KEY_READ, &udpatch);
1829     if (res != ERROR_SUCCESS)
1830         goto done;
1831
1832     size = sizeof(DWORD);
1833     res = RegGetValueW(udpatch, NULL, szState, RRF_RT_DWORD, &type, &val, &size);
1834     if (res != ERROR_SUCCESS ||
1835         val < MSIPATCHSTATE_APPLIED || val > MSIPATCHSTATE_REGISTERED)
1836     {
1837         r = ERROR_BAD_CONFIGURATION;
1838         goto done;
1839     }
1840
1841     *state = val;
1842     r = ERROR_SUCCESS;
1843
1844 done:
1845     RegCloseKey(udpatch);
1846     RegCloseKey(hkey);
1847     RegCloseKey(prod);
1848
1849     return r;
1850 }
1851
1852 static UINT msi_check_product_patches(LPCWSTR prodcode, LPCWSTR usersid,
1853         MSIINSTALLCONTEXT context, DWORD filter, DWORD index, DWORD *idx,
1854         LPWSTR patch, LPWSTR targetprod, MSIINSTALLCONTEXT *targetctx,
1855         LPWSTR targetsid, DWORD *sidsize, LPWSTR *transforms)
1856 {
1857     MSIPATCHSTATE state = MSIPATCHSTATE_INVALID;
1858     LPWSTR ptr, patches = NULL;
1859     HKEY prod, patchkey = 0;
1860     HKEY localprod = 0, localpatch = 0;
1861     DWORD type, size;
1862     LONG res;
1863     UINT temp, r = ERROR_NO_MORE_ITEMS;
1864
1865     if (MSIREG_OpenProductKey(prodcode, usersid, context,
1866                               &prod, FALSE) != ERROR_SUCCESS)
1867         return ERROR_NO_MORE_ITEMS;
1868
1869     size = 0;
1870     res = RegGetValueW(prod, szPatches, szPatches, RRF_RT_ANY, &type, NULL,
1871                        &size);
1872     if (res != ERROR_SUCCESS)
1873         goto done;
1874
1875     if (type != REG_MULTI_SZ)
1876     {
1877         r = ERROR_BAD_CONFIGURATION;
1878         goto done;
1879     }
1880
1881     patches = msi_alloc(size);
1882     if (!patches)
1883     {
1884         r = ERROR_OUTOFMEMORY;
1885         goto done;
1886     }
1887
1888     res = RegGetValueW(prod, szPatches, szPatches, RRF_RT_ANY, &type,
1889                        patches, &size);
1890     if (res != ERROR_SUCCESS)
1891         goto done;
1892
1893     for (ptr = patches; *ptr && r == ERROR_NO_MORE_ITEMS; ptr += lstrlenW(ptr) + 1)
1894     {
1895         if (!unsquash_guid(ptr, patch))
1896         {
1897             r = ERROR_BAD_CONFIGURATION;
1898             goto done;
1899         }
1900
1901         size = 0;
1902         res = RegGetValueW(prod, szPatches, ptr, RRF_RT_REG_SZ,
1903                            &type, NULL, &size);
1904         if (res != ERROR_SUCCESS)
1905             continue;
1906
1907         if (transforms)
1908         {
1909             *transforms = msi_alloc(size);
1910             if (!*transforms)
1911             {
1912                 r = ERROR_OUTOFMEMORY;
1913                 goto done;
1914             }
1915
1916             res = RegGetValueW(prod, szPatches, ptr, RRF_RT_REG_SZ,
1917                                &type, *transforms, &size);
1918             if (res != ERROR_SUCCESS)
1919                 continue;
1920         }
1921
1922         if (context == MSIINSTALLCONTEXT_USERMANAGED)
1923         {
1924             if (!(filter & MSIPATCHSTATE_APPLIED))
1925             {
1926                 temp = msi_get_patch_state(prodcode, usersid, context,
1927                                            ptr, &state);
1928                 if (temp == ERROR_BAD_CONFIGURATION)
1929                 {
1930                     r = ERROR_BAD_CONFIGURATION;
1931                     goto done;
1932                 }
1933
1934                 if (temp != ERROR_SUCCESS || !(filter & state))
1935                     continue;
1936             }
1937         }
1938         else if (context == MSIINSTALLCONTEXT_USERUNMANAGED)
1939         {
1940             if (!(filter & MSIPATCHSTATE_APPLIED))
1941             {
1942                 temp = msi_get_patch_state(prodcode, usersid, context,
1943                                            ptr, &state);
1944                 if (temp == ERROR_BAD_CONFIGURATION)
1945                 {
1946                     r = ERROR_BAD_CONFIGURATION;
1947                     goto done;
1948                 }
1949
1950                 if (temp != ERROR_SUCCESS || !(filter & state))
1951                     continue;
1952             }
1953             else
1954             {
1955                 temp = MSIREG_OpenUserDataPatchKey(patch, context,
1956                                                    &patchkey, FALSE);
1957                 RegCloseKey(patchkey);
1958                 if (temp != ERROR_SUCCESS)
1959                     continue;
1960             }
1961         }
1962         else if (context == MSIINSTALLCONTEXT_MACHINE)
1963         {
1964             usersid = szEmpty;
1965
1966             if (MSIREG_OpenUserDataProductKey(prodcode, context, NULL, &localprod, FALSE) == ERROR_SUCCESS &&
1967                 RegOpenKeyExW(localprod, szPatches, 0, KEY_READ, &localpatch) == ERROR_SUCCESS &&
1968                 RegOpenKeyExW(localpatch, ptr, 0, KEY_READ, &patchkey) == ERROR_SUCCESS)
1969             {
1970                 res = RegGetValueW(patchkey, NULL, szState, RRF_RT_REG_DWORD,
1971                                    &type, &state, &size);
1972
1973                 if (!(filter & state))
1974                     res = ERROR_NO_MORE_ITEMS;
1975
1976                 RegCloseKey(patchkey);
1977             }
1978
1979             RegCloseKey(localpatch);
1980             RegCloseKey(localprod);
1981
1982             if (res != ERROR_SUCCESS)
1983                 continue;
1984         }
1985
1986         if (*idx < index)
1987         {
1988             (*idx)++;
1989             continue;
1990         }
1991
1992         r = ERROR_SUCCESS;
1993         if (targetprod)
1994             lstrcpyW(targetprod, prodcode);
1995
1996         if (targetctx)
1997             *targetctx = context;
1998
1999         if (targetsid)
2000         {
2001             lstrcpynW(targetsid, usersid, *sidsize);
2002             if (lstrlenW(usersid) >= *sidsize)
2003                 r = ERROR_MORE_DATA;
2004         }
2005
2006         if (sidsize)
2007         {
2008             *sidsize = lstrlenW(usersid);
2009             if (!targetsid)
2010                 *sidsize *= sizeof(WCHAR);
2011         }
2012     }
2013
2014 done:
2015     RegCloseKey(prod);
2016     msi_free(patches);
2017
2018     return r;
2019 }
2020
2021 static UINT msi_enum_patches(LPCWSTR szProductCode, LPCWSTR szUserSid,
2022         DWORD dwContext, DWORD dwFilter, DWORD dwIndex, DWORD *idx,
2023         LPWSTR szPatchCode, LPWSTR szTargetProductCode,
2024         MSIINSTALLCONTEXT *pdwTargetProductContext, LPWSTR szTargetUserSid,
2025         LPDWORD pcchTargetUserSid, LPWSTR *szTransforms)
2026 {
2027     LPWSTR usersid = NULL;
2028     UINT r = ERROR_INVALID_PARAMETER;
2029
2030     if (!szUserSid)
2031     {
2032         szUserSid = usersid = get_user_sid();
2033         if (!usersid) return ERROR_FUNCTION_FAILED;
2034     }
2035
2036     if (dwContext & MSIINSTALLCONTEXT_USERMANAGED)
2037     {
2038         r = msi_check_product_patches(szProductCode, szUserSid,
2039                                       MSIINSTALLCONTEXT_USERMANAGED, dwFilter,
2040                                       dwIndex, idx, szPatchCode,
2041                                       szTargetProductCode,
2042                                       pdwTargetProductContext, szTargetUserSid,
2043                                       pcchTargetUserSid, szTransforms);
2044         if (r != ERROR_NO_MORE_ITEMS)
2045             goto done;
2046     }
2047
2048     if (dwContext & MSIINSTALLCONTEXT_USERUNMANAGED)
2049     {
2050         r = msi_check_product_patches(szProductCode, szUserSid,
2051                                       MSIINSTALLCONTEXT_USERUNMANAGED, dwFilter,
2052                                       dwIndex, idx, szPatchCode,
2053                                       szTargetProductCode,
2054                                       pdwTargetProductContext, szTargetUserSid,
2055                                       pcchTargetUserSid, szTransforms);
2056         if (r != ERROR_NO_MORE_ITEMS)
2057             goto done;
2058     }
2059
2060     if (dwContext & MSIINSTALLCONTEXT_MACHINE)
2061     {
2062         r = msi_check_product_patches(szProductCode, szUserSid,
2063                                       MSIINSTALLCONTEXT_MACHINE, dwFilter,
2064                                       dwIndex, idx, szPatchCode,
2065                                       szTargetProductCode,
2066                                       pdwTargetProductContext, szTargetUserSid,
2067                                       pcchTargetUserSid, szTransforms);
2068         if (r != ERROR_NO_MORE_ITEMS)
2069             goto done;
2070     }
2071
2072 done:
2073     LocalFree(usersid);
2074     return r;
2075 }
2076
2077 /***********************************************************************
2078  * MsiEnumPatchesExW            [MSI.@]
2079  */
2080 UINT WINAPI MsiEnumPatchesExW(LPCWSTR szProductCode, LPCWSTR szUserSid,
2081         DWORD dwContext, DWORD dwFilter, DWORD dwIndex, LPWSTR szPatchCode,
2082         LPWSTR szTargetProductCode, MSIINSTALLCONTEXT *pdwTargetProductContext,
2083         LPWSTR szTargetUserSid, LPDWORD pcchTargetUserSid)
2084 {
2085     WCHAR squished_pc[GUID_SIZE];
2086     DWORD idx = 0;
2087     UINT r;
2088
2089     static DWORD last_index;
2090
2091     TRACE("(%s, %s, %d, %d, %d, %p, %p, %p, %p, %p)\n",
2092           debugstr_w(szProductCode), debugstr_w(szUserSid), dwContext, dwFilter,
2093           dwIndex, szPatchCode, szTargetProductCode, pdwTargetProductContext,
2094           szTargetUserSid, pcchTargetUserSid);
2095
2096     if (!szProductCode || !squash_guid(szProductCode, squished_pc))
2097         return ERROR_INVALID_PARAMETER;
2098
2099     if (szUserSid && !strcmpW( szUserSid, szLocalSid ))
2100         return ERROR_INVALID_PARAMETER;
2101
2102     if (dwContext & MSIINSTALLCONTEXT_MACHINE && szUserSid)
2103         return ERROR_INVALID_PARAMETER;
2104
2105     if (dwContext <= MSIINSTALLCONTEXT_NONE ||
2106         dwContext > MSIINSTALLCONTEXT_ALL)
2107         return ERROR_INVALID_PARAMETER;
2108
2109     if (dwFilter <= MSIPATCHSTATE_INVALID || dwFilter > MSIPATCHSTATE_ALL)
2110         return ERROR_INVALID_PARAMETER;
2111
2112     if (dwIndex && dwIndex - last_index != 1)
2113         return ERROR_INVALID_PARAMETER;
2114
2115     if (dwIndex == 0)
2116         last_index = 0;
2117
2118     r = msi_enum_patches(szProductCode, szUserSid, dwContext, dwFilter,
2119                          dwIndex, &idx, szPatchCode, szTargetProductCode,
2120                          pdwTargetProductContext, szTargetUserSid,
2121                          pcchTargetUserSid, NULL);
2122
2123     if (r == ERROR_SUCCESS)
2124         last_index = dwIndex;
2125     else
2126         last_index = 0;
2127
2128     return r;
2129 }
2130
2131 /***********************************************************************
2132  * MsiEnumPatchesA            [MSI.@]
2133  */
2134 UINT WINAPI MsiEnumPatchesA(LPCSTR szProduct, DWORD iPatchIndex,
2135         LPSTR lpPatchBuf, LPSTR lpTransformsBuf, LPDWORD pcchTransformsBuf)
2136 {
2137     LPWSTR product, transforms;
2138     WCHAR patch[GUID_SIZE];
2139     DWORD len;
2140     UINT r;
2141
2142     TRACE("(%s %d %p %p %p)\n", debugstr_a(szProduct), iPatchIndex,
2143           lpPatchBuf, lpTransformsBuf, pcchTransformsBuf);
2144
2145     if (!szProduct || !lpPatchBuf || !lpTransformsBuf || !pcchTransformsBuf)
2146         return ERROR_INVALID_PARAMETER;
2147
2148     product = strdupAtoW(szProduct);
2149     if (!product)
2150         return ERROR_OUTOFMEMORY;
2151
2152     len = *pcchTransformsBuf;
2153     transforms = msi_alloc( len * sizeof(WCHAR) );
2154     if (!transforms)
2155     {
2156         r = ERROR_OUTOFMEMORY;
2157         goto done;
2158     }
2159
2160     r = MsiEnumPatchesW(product, iPatchIndex, patch, transforms, &len);
2161     if (r != ERROR_SUCCESS && r != ERROR_MORE_DATA)
2162         goto done;
2163
2164     WideCharToMultiByte(CP_ACP, 0, patch, -1, lpPatchBuf,
2165                         GUID_SIZE, NULL, NULL);
2166
2167     if (!WideCharToMultiByte(CP_ACP, 0, transforms, -1, lpTransformsBuf,
2168                              *pcchTransformsBuf, NULL, NULL))
2169         r = ERROR_MORE_DATA;
2170
2171     if (r == ERROR_MORE_DATA)
2172     {
2173         lpTransformsBuf[*pcchTransformsBuf - 1] = '\0';
2174         *pcchTransformsBuf = len * 2;
2175     }
2176     else
2177         *pcchTransformsBuf = strlen( lpTransformsBuf );
2178
2179 done:
2180     msi_free(transforms);
2181     msi_free(product);
2182
2183     return r;
2184 }
2185
2186 /***********************************************************************
2187  * MsiEnumPatchesW            [MSI.@]
2188  */
2189 UINT WINAPI MsiEnumPatchesW(LPCWSTR szProduct, DWORD iPatchIndex,
2190         LPWSTR lpPatchBuf, LPWSTR lpTransformsBuf, LPDWORD pcchTransformsBuf)
2191 {
2192     WCHAR squished_pc[GUID_SIZE];
2193     LPWSTR transforms = NULL;
2194     HKEY prod;
2195     DWORD idx = 0;
2196     UINT r;
2197
2198     TRACE("(%s %d %p %p %p)\n", debugstr_w(szProduct), iPatchIndex,
2199           lpPatchBuf, lpTransformsBuf, pcchTransformsBuf);
2200
2201     if (!szProduct || !squash_guid(szProduct, squished_pc))
2202         return ERROR_INVALID_PARAMETER;
2203
2204     if (!lpPatchBuf || !lpTransformsBuf || !pcchTransformsBuf)
2205         return ERROR_INVALID_PARAMETER;
2206
2207     if (MSIREG_OpenProductKey(szProduct, NULL, MSIINSTALLCONTEXT_USERMANAGED,
2208                               &prod, FALSE) != ERROR_SUCCESS &&
2209         MSIREG_OpenProductKey(szProduct, NULL, MSIINSTALLCONTEXT_USERUNMANAGED,
2210                               &prod, FALSE) != ERROR_SUCCESS &&
2211         MSIREG_OpenProductKey(szProduct, NULL, MSIINSTALLCONTEXT_MACHINE,
2212                               &prod, FALSE) != ERROR_SUCCESS)
2213         return ERROR_UNKNOWN_PRODUCT;
2214
2215     RegCloseKey(prod);
2216
2217     r = msi_enum_patches(szProduct, NULL, MSIINSTALLCONTEXT_ALL,
2218                          MSIPATCHSTATE_ALL, iPatchIndex, &idx, lpPatchBuf,
2219                          NULL, NULL, NULL, NULL, &transforms);
2220     if (r != ERROR_SUCCESS)
2221         goto done;
2222
2223     lstrcpynW(lpTransformsBuf, transforms, *pcchTransformsBuf);
2224     if (*pcchTransformsBuf <= lstrlenW(transforms))
2225     {
2226         r = ERROR_MORE_DATA;
2227         *pcchTransformsBuf = lstrlenW(transforms);
2228     }
2229     else
2230         *pcchTransformsBuf = lstrlenW(transforms);
2231
2232 done:
2233     msi_free(transforms);
2234     return r;
2235 }
2236
2237 UINT WINAPI MsiEnumProductsExA( LPCSTR product, LPCSTR usersid, DWORD ctx, DWORD index,
2238                                 CHAR installed_product[GUID_SIZE],
2239                                 MSIINSTALLCONTEXT *installed_ctx, LPSTR sid, LPDWORD sid_len )
2240 {
2241     UINT r;
2242     WCHAR installed_productW[GUID_SIZE], *productW = NULL, *usersidW = NULL, *sidW = NULL;
2243
2244     TRACE("%s, %s, %u, %u, %p, %p, %p, %p\n", debugstr_a(product), debugstr_a(usersid),
2245           ctx, index, installed_product, installed_ctx, sid, sid_len);
2246
2247     if (sid && !sid_len) return ERROR_INVALID_PARAMETER;
2248     if (product && !(productW = strdupAtoW( product ))) return ERROR_OUTOFMEMORY;
2249     if (usersid && !(usersidW = strdupAtoW( usersid )))
2250     {
2251         msi_free( productW );
2252         return ERROR_OUTOFMEMORY;
2253     }
2254     if (sid && !(sidW = msi_alloc( *sid_len * sizeof(WCHAR) )))
2255     {
2256         msi_free( usersidW );
2257         msi_free( productW );
2258         return ERROR_OUTOFMEMORY;
2259     }
2260     r = MsiEnumProductsExW( productW, usersidW, ctx, index, installed_productW,
2261                             installed_ctx, sidW, sid_len );
2262     if (r == ERROR_SUCCESS)
2263     {
2264         if (installed_product) WideCharToMultiByte( CP_ACP, 0, installed_productW, GUID_SIZE,
2265                                                     installed_product, GUID_SIZE, NULL, NULL );
2266         if (sid) WideCharToMultiByte( CP_ACP, 0, sidW, *sid_len + 1, sid, *sid_len + 1, NULL, NULL );
2267     }
2268     msi_free( productW );
2269     msi_free( usersidW );
2270     msi_free( sidW );
2271     return r;
2272 }
2273
2274 static UINT fetch_machine_product( const WCHAR *match, DWORD index, DWORD *idx,
2275                                    WCHAR installed_product[GUID_SIZE],
2276                                    MSIINSTALLCONTEXT *installed_ctx, WCHAR *sid, DWORD *sid_len )
2277 {
2278     static const WCHAR productsW[] =
2279         {'S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s','\\',
2280          'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s',0};
2281     UINT r;
2282     WCHAR product[GUID_SIZE];
2283     DWORD i = 0, len;
2284     REGSAM access = KEY_ENUMERATE_SUB_KEYS | KEY_WOW64_64KEY;
2285     HKEY key;
2286
2287     if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, productsW, 0, access, &key ))
2288         return ERROR_NO_MORE_ITEMS;
2289
2290     len = sizeof(product)/sizeof(product[0]);
2291     while (!RegEnumKeyExW( key, i, product, &len, NULL, NULL, NULL, NULL ))
2292     {
2293         if (match && strcmpW( match, product ))
2294         {
2295             i++;
2296             len = sizeof(product)/sizeof(product[0]);
2297             continue;
2298         }
2299         if (*idx == index) goto found;
2300         (*idx)++;
2301         len = sizeof(product)/sizeof(product[0]);
2302         i++;
2303     }
2304     RegCloseKey( key );
2305     return ERROR_NO_MORE_ITEMS;
2306
2307 found:
2308     if (sid_len && *sid_len < 1)
2309     {
2310         *sid_len = 1;
2311         r = ERROR_MORE_DATA;
2312     }
2313     else
2314     {
2315         if (installed_product) unsquash_guid( product, installed_product );
2316         if (installed_ctx) *installed_ctx = MSIINSTALLCONTEXT_MACHINE;
2317         if (sid)
2318         {
2319             sid[0] = 0;
2320             *sid_len = 0;
2321         }
2322         r = ERROR_SUCCESS;
2323     }
2324     RegCloseKey( key );
2325     return r;
2326 }
2327
2328 static UINT fetch_user_product( const WCHAR *match, const WCHAR *usersid, DWORD ctx, DWORD index,
2329                                 DWORD *idx, WCHAR installed_product[GUID_SIZE],
2330                                 MSIINSTALLCONTEXT *installed_ctx, WCHAR *sid, DWORD *sid_len )
2331 {
2332     static const WCHAR managedW[] =
2333         {'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
2334          'W','i','n','d','o','w','s','\\','C','u','r','r','e','n','t','V','e','r','s',
2335          'i','o','n','\\','I','n','s','t','a','l','l','e','r','\\','M','a','n','a','g','e','d',0};
2336     static const WCHAR managed_productsW[] =
2337         {'\\','I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s',0};
2338     static const WCHAR unmanaged_productsW[] =
2339         {'\\','S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
2340          'I','n','s','t','a','l','l','e','r','\\','P','r','o','d','u','c','t','s',0};
2341     UINT r;
2342     const WCHAR *subkey;
2343     WCHAR path[MAX_PATH], product[GUID_SIZE], user[128];
2344     DWORD i = 0, j = 0, len_product, len_user;
2345     REGSAM access = KEY_ENUMERATE_SUB_KEYS | KEY_WOW64_64KEY;
2346     HKEY key_users, key_products;
2347
2348     if (ctx == MSIINSTALLCONTEXT_USERMANAGED)
2349     {
2350         subkey = managed_productsW;
2351         if (RegOpenKeyExW( HKEY_LOCAL_MACHINE, managedW, 0, access, &key_users ))
2352             return ERROR_NO_MORE_ITEMS;
2353     }
2354     else if (ctx == MSIINSTALLCONTEXT_USERUNMANAGED)
2355     {
2356         subkey = unmanaged_productsW;
2357         if (RegOpenKeyExW( HKEY_USERS, NULL, 0, access, &key_users ))
2358             return ERROR_NO_MORE_ITEMS;
2359     }
2360     else return ERROR_INVALID_PARAMETER;
2361
2362     len_user = sizeof(user)/sizeof(user[0]);
2363     while (!RegEnumKeyExW( key_users, i, user, &len_user, NULL, NULL, NULL, NULL ))
2364     {
2365         if (strcmpW( usersid, user ) && strcmpW( usersid, szAllSid ))
2366         {
2367             i++;
2368             len_user = sizeof(user)/sizeof(user[0]);
2369             continue;
2370         }
2371         strcpyW( path, user );
2372         strcatW( path, subkey );
2373         if (RegOpenKeyExW( key_users, path, 0, access, &key_products ))
2374         {
2375             i++;
2376             len_user = sizeof(user)/sizeof(user[0]);
2377             continue;
2378         }
2379         len_product = sizeof(product)/sizeof(product[0]);
2380         while (!RegEnumKeyExW( key_products, j, product, &len_product, NULL, NULL, NULL, NULL ))
2381         {
2382             if (match && strcmpW( match, product ))
2383             {
2384                 j++;
2385                 len_product = sizeof(product)/sizeof(product[0]);
2386                 continue;
2387             }
2388             if (*idx == index) goto found;
2389             (*idx)++;
2390             len_product = sizeof(product)/sizeof(product[0]);
2391             j++;
2392         }
2393         RegCloseKey( key_products );
2394         len_user = sizeof(user)/sizeof(user[0]);
2395         i++;
2396     }
2397     RegCloseKey( key_users );
2398     return ERROR_NO_MORE_ITEMS;
2399
2400 found:
2401     if (sid_len && *sid_len <= len_user)
2402     {
2403         *sid_len = len_user;
2404         r = ERROR_MORE_DATA;
2405     }
2406     else
2407     {
2408         if (installed_product) unsquash_guid( product, installed_product );
2409         if (installed_ctx) *installed_ctx = ctx;
2410         if (sid)
2411         {
2412             strcpyW( sid, user );
2413             *sid_len = len_user;
2414         }
2415         r = ERROR_SUCCESS;
2416     }
2417     RegCloseKey( key_products );
2418     RegCloseKey( key_users );
2419     return r;
2420 }
2421
2422 static UINT enum_products( const WCHAR *product, const WCHAR *usersid, DWORD ctx, DWORD index,
2423                            DWORD *idx, WCHAR installed_product[GUID_SIZE],
2424                            MSIINSTALLCONTEXT *installed_ctx, WCHAR *sid, DWORD *sid_len )
2425 {
2426     UINT r = ERROR_NO_MORE_ITEMS;
2427     WCHAR *user = NULL;
2428
2429     if (!usersid)
2430     {
2431         usersid = user = get_user_sid();
2432         if (!user) return ERROR_FUNCTION_FAILED;
2433     }
2434     if (ctx & MSIINSTALLCONTEXT_MACHINE)
2435     {
2436         r = fetch_machine_product( product, index, idx, installed_product, installed_ctx,
2437                                    sid, sid_len );
2438         if (r != ERROR_NO_MORE_ITEMS) goto done;
2439     }
2440     if (ctx & MSIINSTALLCONTEXT_USERUNMANAGED)
2441     {
2442         r = fetch_user_product( product, usersid, MSIINSTALLCONTEXT_USERUNMANAGED, index,
2443                                 idx, installed_product, installed_ctx, sid, sid_len );
2444         if (r != ERROR_NO_MORE_ITEMS) goto done;
2445     }
2446     if (ctx & MSIINSTALLCONTEXT_USERMANAGED)
2447     {
2448         r = fetch_user_product( product, usersid, MSIINSTALLCONTEXT_USERMANAGED, index,
2449                                 idx, installed_product, installed_ctx, sid, sid_len );
2450         if (r != ERROR_NO_MORE_ITEMS) goto done;
2451     }
2452
2453 done:
2454     LocalFree( user );
2455     return r;
2456 }
2457
2458 UINT WINAPI MsiEnumProductsExW( LPCWSTR product, LPCWSTR usersid, DWORD ctx, DWORD index,
2459                                 WCHAR installed_product[GUID_SIZE],
2460                                 MSIINSTALLCONTEXT *installed_ctx, LPWSTR sid, LPDWORD sid_len )
2461 {
2462     UINT r;
2463     DWORD idx = 0;
2464     static DWORD last_index;
2465
2466     TRACE("%s, %s, %u, %u, %p, %p, %p, %p\n", debugstr_w(product), debugstr_w(usersid),
2467           ctx, index, installed_product, installed_ctx, sid, sid_len);
2468
2469     if ((sid && !sid_len) || !ctx || (usersid && ctx == MSIINSTALLCONTEXT_MACHINE))
2470         return ERROR_INVALID_PARAMETER;
2471
2472     if (index && index - last_index != 1)
2473         return ERROR_INVALID_PARAMETER;
2474
2475     if (!index) last_index = 0;
2476
2477     r = enum_products( product, usersid, ctx, index, &idx, installed_product, installed_ctx,
2478                        sid, sid_len );
2479     if (r == ERROR_SUCCESS)
2480         last_index = index;
2481     else
2482         last_index = 0;
2483
2484     return r;
2485 }