dlls/gameux/gameexplorer.c

   1 /*
   2  *    Gameux library coclass GameExplorer implementation
   3  *
   4  * Copyright (C) 2010 Mariusz Pluciński
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20 #define COBJMACROS
  21
  22 #include "config.h"
  23
  24 #include "ole2.h"
  25 #include "sddl.h"
  26
  27 #include "gameux.h"
  28 #include "gameux_private.h"
  29
  30 #include "initguid.h"
  31 #include "msxml2.h"
  32
  33 #include "wine/debug.h"
  34 #include "winreg.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(gameux);
  37
  38 /* function from Shell32, not defined in header */
  39 extern BOOL WINAPI GUIDFromStringW(LPCWSTR psz, LPGUID pguid);
  40
  41 /*******************************************************************************
  42  * GameUX helper functions
  43  */
  44 /*******************************************************************************
  45  * GAMEUX_initGameData
  46  *
  47  * Internal helper function.
  48  * Initializes GAME_DATA structure fields with proper values. Should be
  49  * called always before first usage of this structure. Implemented in gameexplorer.c
  50  *
  51  * Parameters:
  52  *  GameData                        [I/O]   pointer to structure to initialize
  53  */
  54 static void GAMEUX_initGameData(struct GAMEUX_GAME_DATA *GameData)
  55 {
  56     GameData->sGDFBinaryPath = NULL;
  57     GameData->sGameInstallDirectory = NULL;
  58     GameData->bstrName = NULL;
  59     GameData->bstrDescription = NULL;
  60 }
  61 /*******************************************************************************
  62  * GAMEUX_uninitGameData
  63  *
  64  * Internal helper function.
  65  * Properly frees all data stored or pointed by fields of GAME_DATA structure.
  66  * Should be called before freeing this structure. Implemented in gameexplorer.c
  67  *
  68  * Parameters:
  69  *  GameData                        [I/O]   pointer to structure to uninitialize
  70  */
  71 static void GAMEUX_uninitGameData(struct GAMEUX_GAME_DATA *GameData)
  72 {
  73     HeapFree(GetProcessHeap(), 0, GameData->sGDFBinaryPath);
  74     HeapFree(GetProcessHeap(), 0, GameData->sGameInstallDirectory);
  75     SysFreeString(GameData->bstrName);
  76     SysFreeString(GameData->bstrDescription);
  77 }
  78 /*******************************************************************************
  79  * GAMEUX_buildGameRegistryPath
  80  *
  81  * Internal helper function. Description available in gameux_private.h file
  82  */
  83 HRESULT GAMEUX_buildGameRegistryPath(GAME_INSTALL_SCOPE installScope,
  84         LPCGUID gameInstanceId,
  85         LPWSTR* lpRegistryPath)
  86 {
  87     static const WCHAR sGameUxRegistryPath[] = {'S','O','F','T','W','A','R','E','\\',
  88             'M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\',
  89             'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\','G','a','m','e','U','X',0};
  90     static const WCHAR sGames[] = {'G','a','m','e','s',0};
  91     static const WCHAR sBackslash[] = {'\\',0};
  92
  93     HRESULT hr = S_OK;
  94     HANDLE hToken = NULL;
  95     PTOKEN_USER pTokenUser = NULL;
  96     DWORD dwLength;
  97     LPWSTR lpSID = NULL;
  98     WCHAR sInstanceId[40];
  99     WCHAR sRegistryPath[8192];
 100
 101     TRACE("(0x%x, %s, %p)\n", installScope, debugstr_guid(gameInstanceId), lpRegistryPath);
 102
 103     /* this will make freeing it easier for user */
 104     *lpRegistryPath = NULL;
 105
 106     lstrcpyW(sRegistryPath, sGameUxRegistryPath);
 107     lstrcatW(sRegistryPath, sBackslash);
 108
 109     if(installScope == GIS_CURRENT_USER)
 110     {
 111         /* build registry path containing user's SID */
 112         if(!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
 113             hr = HRESULT_FROM_WIN32(GetLastError());
 114
 115         if(SUCCEEDED(hr))
 116         {
 117             if(!GetTokenInformation(hToken, TokenUser, NULL, 0, &dwLength) &&
 118                     GetLastError()!=ERROR_INSUFFICIENT_BUFFER)
 119                 hr = HRESULT_FROM_WIN32(GetLastError());
 120
 121             if(SUCCEEDED(hr))
 122             {
 123                 pTokenUser = HeapAlloc(GetProcessHeap(), 0, dwLength);
 124                 if(!pTokenUser)
 125                     hr = E_OUTOFMEMORY;
 126             }
 127
 128             if(SUCCEEDED(hr))
 129                 if(!GetTokenInformation(hToken, TokenUser, (LPVOID)pTokenUser, dwLength, &dwLength))
 130                     hr = HRESULT_FROM_WIN32(GetLastError());
 131
 132             if(SUCCEEDED(hr))
 133                 if(!ConvertSidToStringSidW(pTokenUser->User.Sid, &lpSID))
 134                     hr = HRESULT_FROM_WIN32(GetLastError());
 135
 136             if(SUCCEEDED(hr))
 137             {
 138                 lstrcatW(sRegistryPath, lpSID);
 139                 LocalFree(lpSID);
 140             }
 141
 142             HeapFree(GetProcessHeap(), 0, pTokenUser);
 143             CloseHandle(hToken);
 144         }
 145     }
 146     else if(installScope == GIS_ALL_USERS)
 147         /* build registry path without SID */
 148         lstrcatW(sRegistryPath, sGames);
 149     else
 150         hr = E_INVALIDARG;
 151
 152     /* put game's instance id on the end of path, only if instance id was given */
 153     if(gameInstanceId)
 154     {
 155         if(SUCCEEDED(hr))
 156             hr = (StringFromGUID2(gameInstanceId, sInstanceId, sizeof(sInstanceId)/sizeof(sInstanceId[0])) ? S_OK : E_FAIL);
 157
 158         if(SUCCEEDED(hr))
 159         {
 160             lstrcatW(sRegistryPath, sBackslash);
 161             lstrcatW(sRegistryPath, sInstanceId);
 162         }
 163     }
 164
 165     if(SUCCEEDED(hr))
 166     {
 167         *lpRegistryPath = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(sRegistryPath)+1)*sizeof(WCHAR));
 168         if(!*lpRegistryPath)
 169             hr = E_OUTOFMEMORY;
 170     }
 171
 172     if(SUCCEEDED(hr))
 173         lstrcpyW(*lpRegistryPath, sRegistryPath);
 174
 175     TRACE("result: 0x%x, path: %s\n", hr, debugstr_w(*lpRegistryPath));
 176     return hr;
 177 }
 178 /*******************************************************************************
 179  * GAMEUX_WriteRegistryRecord
 180  *
 181  * Helper function, writes data associated with game (stored in GAMEUX_GAME_DATA
 182  * structure) into expected place in registry.
 183  *
 184  * Parameters:
 185  *  GameData                            [I]     structure with data which will
 186  *                                              be written into registry.
 187  *                                              Proper values of fields installScope
 188  *                                              and guidInstanceId are required
 189  *                                              to create registry key.
 190  *
 191  * Schema of naming registry keys associated with games is available in
 192  * description of _buildGameRegistryPath internal function.
 193  *
 194  * List of registry keys associated with structure fields:
 195  *  Key                              Field in GAMEUX_GAME_DATA structure
 196  *   ApplicationId                    guidApplicationId
 197  *   ConfigApplicationPath            sGameInstallDirectory
 198  *   ConfigGDFBinaryPath              sGDFBinaryPath
 199  *   Title                            bstrName
 200  *
 201  */
 202 static HRESULT GAMEUX_WriteRegistryRecord(struct GAMEUX_GAME_DATA *GameData)
 203 {
 204     static const WCHAR sApplicationId[] =
 205             {'A','p','p','l','i','c','a','t','i','o','n','I','d',0};
 206     static const WCHAR sConfigApplicationPath[] =
 207             {'C','o','n','f','i','g','A','p','p','l','i','c','a','t','i','o','n','P','a','t','h',0};
 208     static const WCHAR sConfigGDFBinaryPath[] =
 209             {'C','o','n','f','i','g','G','D','F','B','i','n','a','r','y','P','a','t','h',0};
 210     static const WCHAR sTitle[] =
 211             {'T','i','t','l','e',0};
 212     static const WCHAR sDescription[] =
 213             {'D','e','s','c','r','i','p','t','i','o','n',0};
 214
 215     HRESULT hr, hr2;
 216     LPWSTR lpRegistryKey;
 217     HKEY hKey;
 218     WCHAR sGameApplicationId[40];
 219
 220     TRACE("(%p)\n", GameData);
 221
 222     hr = GAMEUX_buildGameRegistryPath(GameData->installScope, &GameData->guidInstanceId, &lpRegistryKey);
 223
 224     if(SUCCEEDED(hr))
 225         hr = (StringFromGUID2(&GameData->guidApplicationId, sGameApplicationId, sizeof(sGameApplicationId)/sizeof(sGameApplicationId[0])) ? S_OK : E_FAIL);
 226
 227     if(SUCCEEDED(hr))
 228         hr = HRESULT_FROM_WIN32(RegCreateKeyExW(HKEY_LOCAL_MACHINE, lpRegistryKey,
 229                                                 0, NULL, 0, KEY_ALL_ACCESS | KEY_WOW64_64KEY, NULL,
 230                                                 &hKey, NULL));
 231
 232     if(SUCCEEDED(hr))
 233     {
 234         /* write game data to registry key */
 235         hr = HRESULT_FROM_WIN32(RegSetValueExW(hKey, sConfigApplicationPath, 0,
 236                                                REG_SZ, (LPBYTE)(GameData->sGameInstallDirectory),
 237                                                (lstrlenW(GameData->sGameInstallDirectory)+1)*sizeof(WCHAR)));
 238
 239         if(SUCCEEDED(hr))
 240             hr = HRESULT_FROM_WIN32(RegSetValueExW(hKey, sConfigGDFBinaryPath, 0,
 241                                                    REG_SZ, (LPBYTE)(GameData->sGDFBinaryPath),
 242                                                    (lstrlenW(GameData->sGDFBinaryPath)+1)*sizeof(WCHAR)));
 243
 244         if(SUCCEEDED(hr))
 245             hr = HRESULT_FROM_WIN32(RegSetValueExW(hKey, sApplicationId, 0,
 246                                                    REG_SZ, (LPBYTE)(sGameApplicationId),
 247                                                    (lstrlenW(sGameApplicationId)+1)*sizeof(WCHAR)));
 248
 249         if(SUCCEEDED(hr))
 250             hr = HRESULT_FROM_WIN32(RegSetValueExW(hKey, sTitle, 0,
 251                                                    REG_SZ, (LPBYTE)(GameData->bstrName),
 252                                                    (lstrlenW(GameData->bstrName)+1)*sizeof(WCHAR)));
 253
 254         if(SUCCEEDED(hr))
 255             hr = HRESULT_FROM_WIN32(RegSetValueExW(hKey, sDescription, 0,
 256                                                    REG_SZ, (LPBYTE)(GameData->bstrDescription ? GameData->bstrDescription : GameData->bstrName),
 257                                                    (lstrlenW(GameData->bstrDescription ? GameData->bstrDescription : GameData->bstrName)+1)*sizeof(WCHAR)));
 258
 259         RegCloseKey(hKey);
 260
 261         if(FAILED(hr))
 262         {
 263             /* if something failed, remove whole key */
 264             hr2 = RegDeleteKeyExW(HKEY_LOCAL_MACHINE, lpRegistryKey, KEY_WOW64_64KEY, 0);
 265             /* do not overwrite old failure code with new success code */
 266             if(FAILED(hr2))
 267                 hr = hr2;
 268         }
 269     }
 270
 271     HeapFree(GetProcessHeap(), 0, lpRegistryKey);
 272     TRACE("returning 0x%x\n", hr);
 273     return hr;
 274 }
 275 /*******************************************************************************
 276  * GAMEUX_ProcessGameDefinitionElement
 277  *
 278  * Helper function, parses single element from Game Definition
 279  *
 280  * Parameters:
 281  *  lpXMLElement                        [I]     game definition element
 282  *  GameData                            [O]     structure, where parsed
 283  *                                              data will be stored
 284  */
 285 static HRESULT GAMEUX_ProcessGameDefinitionElement(
 286         IXMLDOMElement *element,
 287         struct GAMEUX_GAME_DATA *GameData)
 288 {
 289     static const WCHAR sName[] =
 290             {'N','a','m','e',0};
 291     static const WCHAR sDescription[] =
 292             {'D','e','s','c','r','i','p','t','i','o','n',0};
 293
 294     HRESULT hr;
 295     BSTR bstrElementName;
 296
 297     TRACE("(%p, %p)\n", element, GameData);
 298
 299     hr = IXMLDOMElement_get_nodeName(element, &bstrElementName);
 300     if(SUCCEEDED(hr))
 301     {
 302         /* check element name */
 303         if(lstrcmpW(bstrElementName, sName) == 0)
 304             hr = IXMLDOMElement_get_text(element, &GameData->bstrName);
 305
 306         else if(lstrcmpW(bstrElementName, sDescription) == 0)
 307             hr = IXMLDOMElement_get_text(element, &GameData->bstrDescription);
 308
 309         else
 310             FIXME("entry %s in Game Definition File not yet supported\n", debugstr_w(bstrElementName));
 311
 312         SysFreeString(bstrElementName);
 313     }
 314
 315     return hr;
 316 }
 317 /*******************************************************************************
 318  * GAMEUX_ParseGameDefinition
 319  *
 320  * Helper function, loads data from given XML element into fields of GAME_DATA
 321  * structure
 322  *
 323  * Parameters:
 324  *  lpXMLGameDefinitionElement          [I]     Game Definition XML element
 325  *  GameData                            [O]     structure where data loaded from
 326  *                                              XML element will be stored in
 327  */
 328 static HRESULT GAMEUX_ParseGameDefinition(
 329         IXMLDOMElement *gdElement,
 330         struct GAMEUX_GAME_DATA *GameData)
 331 {
 332     static const WCHAR sGameId[] = {'g','a','m','e','I','D',0};
 333
 334     HRESULT hr = S_OK;
 335     BSTR bstrAttribute;
 336     VARIANT variant;
 337     IXMLDOMNodeList *childrenList;
 338     IXMLDOMNode *nextNode;
 339     IXMLDOMElement *nextElement;
 340
 341     TRACE("(%p, %p)\n", gdElement, GameData);
 342
 343     bstrAttribute = SysAllocString(sGameId);
 344     if(!bstrAttribute)
 345         hr = E_OUTOFMEMORY;
 346
 347     hr = IXMLDOMElement_getAttribute(gdElement, bstrAttribute, &variant);
 348
 349     if(SUCCEEDED(hr))
 350     {
 351         hr = ( GUIDFromStringW(V_BSTR(&variant), &GameData->guidApplicationId)==TRUE ? S_OK : E_FAIL);
 352
 353         SysFreeString(V_BSTR(&variant));
 354     }
 355
 356     SysFreeString(bstrAttribute);
 357
 358     /* browse subnodes */
 359     if(SUCCEEDED(hr))
 360         hr = IXMLDOMElement_get_childNodes(gdElement, &childrenList);
 361
 362     if(SUCCEEDED(hr))
 363     {
 364         do
 365         {
 366             hr = IXMLDOMNodeList_nextNode(childrenList, &nextNode);
 367
 368             if(hr == S_OK)
 369             {
 370                 hr = IXMLDOMNode_QueryInterface(nextNode, &IID_IXMLDOMElement,
 371                                                 (LPVOID*)&nextElement);
 372
 373                 if(SUCCEEDED(hr))
 374                 {
 375                     hr = GAMEUX_ProcessGameDefinitionElement(nextElement, GameData);
 376                     IXMLDOMElement_Release(nextElement);
 377                 }
 378
 379                 IXMLDOMElement_Release(nextNode);
 380             }
 381         }
 382         while(hr == S_OK);
 383         hr = S_OK;
 384
 385         IXMLDOMNodeList_Release(childrenList);
 386     }
 387
 388     return hr;
 389 }
 390 /*******************************************************************************
 391  * GAMEUX_ParseGDFBinary
 392  *
 393  * Helper function, loads given binary and parses embed GDF if there's any.
 394  *
 395  * Parameters:
 396  *  GameData                [I/O]   Structure with game's data. Content of field
 397  *                                  sGDFBinaryPath defines path to binary, from
 398  *                                  which embed GDF will be loaded. Data from
 399  *                                  GDF will be stored in other fields of this
 400  *                                  structure.
 401  */
 402 static HRESULT GAMEUX_ParseGDFBinary(struct GAMEUX_GAME_DATA *GameData)
 403 {
 404     static const WCHAR sRes[] = {'r','e','s',':','/','/',0};
 405     static const WCHAR sDATA[] = {'D','A','T','A',0};
 406     static const WCHAR sSlash[] = {'/',0};
 407
 408     HRESULT hr = S_OK;
 409     WCHAR sResourcePath[MAX_PATH];
 410     VARIANT variant;
 411     VARIANT_BOOL isSuccessful;
 412     IXMLDOMDocument *document;
 413     IXMLDOMNode *gdNode;
 414     IXMLDOMElement *root, *gdElement;
 415
 416     TRACE("(%p)->sGDFBinaryPath = %s\n", GameData, debugstr_w(GameData->sGDFBinaryPath));
 417
 418     /* prepare path to GDF, using res:// prefix */
 419     lstrcpyW(sResourcePath, sRes);
 420     lstrcatW(sResourcePath, GameData->sGDFBinaryPath);
 421     lstrcatW(sResourcePath, sSlash);
 422     lstrcatW(sResourcePath, sDATA);
 423     lstrcatW(sResourcePath, sSlash);
 424     lstrcatW(sResourcePath, ID_GDF_XML_STR);
 425
 426     hr = CoCreateInstance(&CLSID_DOMDocument, NULL, CLSCTX_INPROC_SERVER,
 427             &IID_IXMLDOMDocument, (void**)&document);
 428
 429     if(SUCCEEDED(hr))
 430     {
 431         /* load GDF into MSXML */
 432         V_VT(&variant) = VT_BSTR;
 433         V_BSTR(&variant) = SysAllocString(sResourcePath);
 434         if(!V_BSTR(&variant))
 435             hr = E_OUTOFMEMORY;
 436
 437         if(SUCCEEDED(hr))
 438         {
 439             hr = IXMLDOMDocument_load(document, variant, &isSuccessful);
 440             if(hr == S_FALSE || isSuccessful == VARIANT_FALSE)
 441                 hr = E_FAIL;
 442         }
 443
 444         SysFreeString(V_BSTR(&variant));
 445
 446         if(SUCCEEDED(hr))
 447         {
 448             hr = IXMLDOMDocument_get_documentElement(document, &root);
 449             if(hr == S_FALSE)
 450                 hr = E_FAIL;
 451         }
 452
 453         if(SUCCEEDED(hr))
 454         {
 455             hr = IXMLDOMElement_get_firstChild(root, &gdNode);
 456             if(hr == S_FALSE)
 457                 hr = E_FAIL;
 458
 459             if(SUCCEEDED(hr))
 460             {
 461                 hr = IXMLDOMNode_QueryInterface(gdNode, &IID_IXMLDOMElement, (LPVOID*)&gdElement);
 462                 if(SUCCEEDED(hr))
 463                 {
 464                     hr = GAMEUX_ParseGameDefinition(gdElement, GameData);
 465                     IXMLDOMElement_Release(gdElement);
 466                 }
 467
 468                 IXMLDOMNode_Release(gdNode);
 469             }
 470
 471             IXMLDOMElement_Release(root);
 472         }
 473
 474         IXMLDOMDocument_Release(document);
 475     }
 476
 477     return hr;
 478 }
 479 /*******************************************************************
 480  * GAMEUX_RemoveRegistryRecord
 481  *
 482  * Helper function, removes registry key associated with given game instance
 483  */
 484 static HRESULT GAMEUX_RemoveRegistryRecord(GUID* pInstanceID)
 485 {
 486     HRESULT hr;
 487     LPWSTR lpRegistryPath = NULL;
 488     TRACE("(%s)\n", debugstr_guid(pInstanceID));
 489
 490     /* first, check is game installed for all users */
 491     hr = GAMEUX_buildGameRegistryPath(GIS_ALL_USERS, pInstanceID, &lpRegistryPath);
 492     if(SUCCEEDED(hr))
 493         hr = HRESULT_FROM_WIN32(RegDeleteKeyExW(HKEY_LOCAL_MACHINE, lpRegistryPath, KEY_WOW64_64KEY, 0));
 494
 495     HeapFree(GetProcessHeap(), 0, lpRegistryPath);
 496
 497     /* if not, check current user */
 498     if(FAILED(hr))
 499     {
 500         hr = GAMEUX_buildGameRegistryPath(GIS_CURRENT_USER, pInstanceID, &lpRegistryPath);
 501         if(SUCCEEDED(hr))
 502             hr = HRESULT_FROM_WIN32(RegDeleteKeyExW(HKEY_LOCAL_MACHINE, lpRegistryPath, KEY_WOW64_64KEY, 0));
 503
 504         HeapFree(GetProcessHeap(), 0, lpRegistryPath);
 505     }
 506
 507     return hr;
 508 }
 509 /*******************************************************************************
 510  *  GAMEUX_RegisterGame
 511  *
 512  * Internal helper function. Registers game associated with given GDF binary in
 513  * Game Explorer. Implemented in gameexplorer.c
 514  *
 515  * Parameters:
 516  *  sGDFBinaryPath                  [I]     path to binary containing GDF file in
 517  *                                          resources
 518  *  sGameInstallDirectory           [I]     path to directory, where game installed
 519  *                                          it's files.
 520  *  installScope                    [I]     scope of game installation
 521  *  pInstanceID                     [I/O]   pointer to game instance identifier.
 522  *                                          If pointing to GUID_NULL, then new
 523  *                                          identifier will be generated automatically
 524  *                                          and returned via this parameter
 525  */
 526 static HRESULT GAMEUX_RegisterGame(LPCWSTR sGDFBinaryPath,
 527         LPCWSTR sGameInstallDirectory,
 528         GAME_INSTALL_SCOPE installScope,
 529         GUID *pInstanceID)
 530 {
 531     HRESULT hr = S_OK;
 532     struct GAMEUX_GAME_DATA GameData;
 533
 534     TRACE("(%s, %s, 0x%x, %s)\n", debugstr_w(sGDFBinaryPath), debugstr_w(sGameInstallDirectory), installScope, debugstr_guid(pInstanceID));
 535
 536     GAMEUX_initGameData(&GameData);
 537     GameData.sGDFBinaryPath = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(sGDFBinaryPath)+1)*sizeof(WCHAR));
 538     lstrcpyW(GameData.sGDFBinaryPath, sGDFBinaryPath);
 539     GameData.sGameInstallDirectory = HeapAlloc(GetProcessHeap(), 0, (lstrlenW(sGameInstallDirectory)+1)*sizeof(WCHAR));
 540     lstrcpyW(GameData.sGameInstallDirectory, sGameInstallDirectory);
 541     GameData.installScope = installScope;
 542
 543     /* generate GUID if it was not provided by user */
 544     if(IsEqualGUID(pInstanceID, &GUID_NULL))
 545         hr = CoCreateGuid(pInstanceID);
 546
 547     GameData.guidInstanceId = *pInstanceID;
 548
 549     /* load data from GDF binary */
 550     if(SUCCEEDED(hr))
 551         hr = GAMEUX_ParseGDFBinary(&GameData);
 552
 553     /* save data to registry */
 554     if(SUCCEEDED(hr))
 555         hr = GAMEUX_WriteRegistryRecord(&GameData);
 556
 557     GAMEUX_uninitGameData(&GameData);
 558     TRACE("returning 0x%08x\n", hr);
 559     return hr;
 560 }
 561 /*******************************************************************************
 562  * GAMEUX_IsGameKeyExist
 563  *
 564  * Helper function, checks if game's registry ath exists in given scope
 565  *
 566  * Parameters:
 567  *  installScope            [I]     scope to search game in
 568  *  InstanceID              [I]     game instance identifier
 569  *  lpRegistryPath          [O]     place to store address of registry path to
 570  *                                  the game. It is filled only if key exists.
 571  *                                  It must be freed by HeapFree(GetProcessHeap(), 0, ...)
 572  *
 573  * Returns:
 574  *  S_OK                key was found properly
 575  *  S_FALSE             key does not exists
 576  *
 577  */
 578 static HRESULT GAMEUX_IsGameKeyExist(GAME_INSTALL_SCOPE installScope,
 579     LPCGUID InstanceID,
 580     LPWSTR* lpRegistryPath) {
 581
 582     HRESULT hr;
 583     HKEY hKey;
 584
 585     hr = GAMEUX_buildGameRegistryPath(installScope, InstanceID, lpRegistryPath);
 586
 587     if(SUCCEEDED(hr))
 588         hr = HRESULT_FROM_WIN32(RegOpenKeyExW(HKEY_LOCAL_MACHINE, *lpRegistryPath,
 589                                               0, KEY_WOW64_64KEY, &hKey));
 590
 591     if(hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND))
 592         hr = S_FALSE;
 593
 594     if(hr == S_OK)
 595         RegCloseKey(hKey);
 596     else
 597     {
 598         /* if the key does not exist or another error occurred, do not return the path */
 599         HeapFree(GetProcessHeap(), 0, *lpRegistryPath);
 600         *lpRegistryPath = NULL;
 601     }
 602
 603     return hr;
 604 }
 605 /*******************************************************************************
 606  * GAMEUX_LoadRegistryString
 607  *
 608  * Helper function, loads string from registry value and allocates buffer for it
 609  */
 610 static HRESULT GAMEUX_LoadRegistryString(HKEY hRootKey,
 611         LPCWSTR lpRegistryKey,
 612         LPCWSTR lpRegistryValue,
 613         LPWSTR* lpValue)
 614 {
 615     HRESULT hr;
 616     DWORD dwSize;
 617
 618     *lpValue = NULL;
 619
 620     hr = HRESULT_FROM_WIN32(RegGetValueW(hRootKey, lpRegistryKey, lpRegistryValue,
 621             RRF_RT_REG_SZ, NULL, NULL, &dwSize));
 622
 623     if(SUCCEEDED(hr))
 624     {
 625         *lpValue = HeapAlloc(GetProcessHeap(), 0, dwSize);
 626         if(!*lpValue)
 627             hr = E_OUTOFMEMORY;
 628     }
 629
 630     if(SUCCEEDED(hr))
 631         hr = HRESULT_FROM_WIN32(RegGetValueW(hRootKey, lpRegistryKey, lpRegistryValue,
 632                 RRF_RT_REG_SZ, NULL, *lpValue, &dwSize));
 633
 634     return hr;
 635 }
 636 /*******************************************************************************
 637  * GAMEUX_UpdateGame
 638  *
 639  * Helper function, updates stored data about game with given InstanceID
 640  */
 641 static HRESULT GAMEUX_UpdateGame(LPGUID InstanceID) {
 642     static const WCHAR sConfigGDFBinaryPath[] = {'C','o','n','f','i','g','G','D','F','B','i','n','a','r','y','P','a','t','h',0};
 643     static const WCHAR sConfigApplicationPath[] = {'C','o','n','f','i','g','A','p','p','l','i','c','a','t','i','o','n','P','a','t','h',0};
 644
 645     HRESULT hr;
 646     GAME_INSTALL_SCOPE installScope;
 647     LPWSTR lpRegistryPath;
 648     LPWSTR lpGDFBinaryPath, lpGameInstallDirectory;
 649
 650     TRACE("(%p)\n", debugstr_guid(InstanceID));
 651
 652     /* first, check is game exists in CURRENT_USER scope  */
 653     installScope = GIS_CURRENT_USER;
 654     hr = GAMEUX_IsGameKeyExist(installScope, InstanceID, &lpRegistryPath);
 655
 656     if(hr == S_FALSE)
 657     {
 658         /* game not found in CURRENT_USER scope, let's check in ALL_USERS */
 659         installScope = GIS_ALL_USERS;
 660         hr = GAMEUX_IsGameKeyExist(installScope, InstanceID, &lpRegistryPath);
 661     }
 662
 663     if(hr == S_FALSE)
 664         /* still not found? let's inform user that game does not exists */
 665         hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
 666
 667     if(SUCCEEDED(hr))
 668     {
 669         /* game found, it's registry path is in lpRegistryPath and install
 670          * scope in installScope */
 671         TRACE("game found in registry (path %s), updating\n", debugstr_w(lpRegistryPath));
 672
 673         /* first, read required data about game */
 674         hr = GAMEUX_LoadRegistryString(HKEY_LOCAL_MACHINE, lpRegistryPath,
 675             sConfigGDFBinaryPath, &lpGDFBinaryPath);
 676
 677         if(SUCCEEDED(hr))
 678             hr = GAMEUX_LoadRegistryString(HKEY_LOCAL_MACHINE, lpRegistryPath,
 679                 sConfigApplicationPath, &lpGameInstallDirectory);
 680
 681         /* now remove currently existing registry key */
 682         if(SUCCEEDED(hr))
 683             hr = GAMEUX_RemoveRegistryRecord(InstanceID);
 684
 685         /* and add it again, it will cause in reparsing of whole GDF */
 686         if(SUCCEEDED(hr))
 687             hr = GAMEUX_RegisterGame(lpGDFBinaryPath, lpGameInstallDirectory,
 688                                      installScope, InstanceID);
 689
 690         HeapFree(GetProcessHeap(), 0, lpGDFBinaryPath);
 691         HeapFree(GetProcessHeap(), 0, lpGameInstallDirectory);
 692     }
 693
 694     HeapFree(GetProcessHeap(), 0, lpRegistryPath);
 695     TRACE("returning 0x%x\n", hr);
 696     return hr;
 697 }
 698 /*******************************************************************************
 699  * GAMEUX_FindGameInstanceId
 700  *
 701  * Internal helper function. Description available in gameux_private.h file
 702  */
 703 HRESULT GAMEUX_FindGameInstanceId(
 704         LPCWSTR sGDFBinaryPath,
 705         GAME_INSTALL_SCOPE installScope,
 706         GUID* pInstanceId)
 707 {
 708     static const WCHAR sConfigGDFBinaryPath[] =
 709             {'C','o','n','f','i','g','G','D','F','B','i','n','a','r','y','P','a','t','h',0};
 710
 711     HRESULT hr;
 712     BOOL found = FALSE;
 713     LPWSTR lpRegistryPath = NULL;
 714     HKEY hRootKey;
 715     DWORD dwSubKeys, dwSubKeyLen, dwMaxSubKeyLen, i;
 716     LPWSTR lpName = NULL, lpValue = NULL;
 717
 718     hr = GAMEUX_buildGameRegistryPath(installScope, NULL, &lpRegistryPath);
 719
 720     if(SUCCEEDED(hr))
 721         /* enumerate all subkeys of received one and search them for value "ConfigGGDFBinaryPath" */
 722         hr = HRESULT_FROM_WIN32(RegOpenKeyExW(HKEY_LOCAL_MACHINE,
 723                 lpRegistryPath, 0, KEY_READ | KEY_WOW64_64KEY, &hRootKey));
 724
 725     if(SUCCEEDED(hr))
 726     {
 727         hr = HRESULT_FROM_WIN32(RegQueryInfoKeyW(hRootKey, NULL, NULL, NULL,
 728                 &dwSubKeys, &dwMaxSubKeyLen, NULL, NULL, NULL, NULL, NULL, NULL));
 729
 730         if(SUCCEEDED(hr))
 731         {
 732             ++dwMaxSubKeyLen; /* for string terminator */
 733             lpName = CoTaskMemAlloc(dwMaxSubKeyLen*sizeof(WCHAR));
 734             if(!lpName) hr = E_OUTOFMEMORY;
 735         }
 736
 737         if(SUCCEEDED(hr))
 738         {
 739             for(i=0; i<dwSubKeys && !found; ++i)
 740             {
 741                 dwSubKeyLen = dwMaxSubKeyLen;
 742                 hr = HRESULT_FROM_WIN32(RegEnumKeyExW(hRootKey, i, lpName, &dwSubKeyLen,
 743                         NULL, NULL, NULL, NULL));
 744
 745                 if(SUCCEEDED(hr))
 746                     hr = GAMEUX_LoadRegistryString(hRootKey, lpName,
 747                                              sConfigGDFBinaryPath, &lpValue);
 748
 749                 if(SUCCEEDED(hr))
 750                     if(lstrcmpW(lpValue, sGDFBinaryPath)==0)
 751                     {
 752                         /* key found, let's copy instance id and exit */
 753                         hr = (GUIDFromStringW(lpName, pInstanceId) ? S_OK : E_FAIL);
 754                         found = TRUE;
 755                     }
 756                 HeapFree(GetProcessHeap(), 0, lpValue);
 757             }
 758         }
 759
 760         HeapFree(GetProcessHeap(), 0, lpName);
 761         RegCloseKey(hRootKey);
 762     }
 763
 764     HeapFree(GetProcessHeap(), 0, lpRegistryPath);
 765
 766     if((SUCCEEDED(hr) && !found) || hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND))
 767         hr = S_FALSE;
 768
 769     return hr;
 770 }
 771 /*******************************************************************************
 772  * GameExplorer implementation
 773  */
 774
 775 typedef struct _GameExplorerImpl
 776 {
 777     const struct IGameExplorerVtbl *lpGameExplorerVtbl;
 778     const struct IGameExplorer2Vtbl *lpGameExplorer2Vtbl;
 779     LONG ref;
 780 } GameExplorerImpl;
 781
 782 static inline GameExplorerImpl *impl_from_IGameExplorer(IGameExplorer *iface)
 783 {
 784     return (GameExplorerImpl*)((char*)iface - FIELD_OFFSET(GameExplorerImpl, lpGameExplorerVtbl));
 785 }
 786
 787 static inline IGameExplorer* IGameExplorer_from_impl(GameExplorerImpl* This)
 788 {
 789     return (struct IGameExplorer*)&This->lpGameExplorerVtbl;
 790 }
 791
 792 static inline GameExplorerImpl *impl_from_IGameExplorer2(IGameExplorer2 *iface)
 793 {
 794     return (GameExplorerImpl*)((char*)iface - FIELD_OFFSET(GameExplorerImpl, lpGameExplorer2Vtbl));
 795 }
 796
 797 static inline IGameExplorer2* IGameExplorer2_from_impl(GameExplorerImpl* This)
 798 {
 799     return (struct IGameExplorer2*)&This->lpGameExplorer2Vtbl;
 800 }
 801
 802 static HRESULT WINAPI GameExplorerImpl_QueryInterface(
 803         IGameExplorer *iface,
 804         REFIID riid,
 805         void **ppvObject)
 806 {
 807     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 808
 809     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppvObject);
 810
 811     *ppvObject = NULL;
 812
 813     if(IsEqualGUID(riid, &IID_IUnknown) ||
 814        IsEqualGUID(riid, &IID_IGameExplorer))
 815     {
 816         *ppvObject = IGameExplorer_from_impl(This);
 817     }
 818     else if(IsEqualGUID(riid, &IID_IGameExplorer2))
 819     {
 820         *ppvObject = IGameExplorer2_from_impl(This);
 821     }
 822     else
 823     {
 824         FIXME("interface %s not implemented\n", debugstr_guid(riid));
 825         return E_NOINTERFACE;
 826     }
 827
 828     IGameExplorer_AddRef(iface);
 829     return S_OK;
 830 }
 831
 832 static ULONG WINAPI GameExplorerImpl_AddRef(IGameExplorer *iface)
 833 {
 834     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 835     LONG ref;
 836
 837     ref = InterlockedIncrement(&This->ref);
 838
 839     TRACE("(%p): ref=%d\n", This, ref);
 840     return ref;
 841 }
 842
 843 static ULONG WINAPI GameExplorerImpl_Release(IGameExplorer *iface)
 844 {
 845     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 846     LONG ref;
 847
 848     ref = InterlockedDecrement(&This->ref);
 849     TRACE("(%p): ref=%d\n", This, ref);
 850
 851     if(ref == 0)
 852     {
 853         TRACE("freeing GameExplorer object\n");
 854         HeapFree(GetProcessHeap(), 0, This);
 855     }
 856
 857     return ref;
 858 }
 859
 860 static HRESULT WINAPI GameExplorerImpl_AddGame(
 861         IGameExplorer *iface,
 862         BSTR bstrGDFBinaryPath,
 863         BSTR sGameInstallDirectory,
 864         GAME_INSTALL_SCOPE installScope,
 865         GUID *pInstanceID)
 866 {
 867     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 868     TRACE("(%p, %s, %s, 0x%x, %s)\n", This, debugstr_w(bstrGDFBinaryPath), debugstr_w(sGameInstallDirectory), installScope, debugstr_guid(pInstanceID));
 869     return GAMEUX_RegisterGame(bstrGDFBinaryPath, sGameInstallDirectory, installScope, pInstanceID);
 870 }
 871
 872 static HRESULT WINAPI GameExplorerImpl_RemoveGame(
 873         IGameExplorer *iface,
 874         GUID instanceID)
 875 {
 876     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 877
 878     TRACE("(%p, %s)\n", This, debugstr_guid(&instanceID));
 879     return GAMEUX_RemoveRegistryRecord(&instanceID);
 880 }
 881
 882 static HRESULT WINAPI GameExplorerImpl_UpdateGame(
 883         IGameExplorer *iface,
 884         GUID instanceID)
 885 {
 886     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 887
 888     TRACE("(%p, %s)\n", This, debugstr_guid(&instanceID));
 889     return GAMEUX_UpdateGame(&instanceID);
 890 }
 891
 892 static HRESULT WINAPI GameExplorerImpl_VerifyAccess(
 893         IGameExplorer *iface,
 894         BSTR sGDFBinaryPath,
 895         BOOL *pHasAccess)
 896 {
 897     GameExplorerImpl *This = impl_from_IGameExplorer(iface);
 898
 899     FIXME("(%p, %s, %p)\n", This, debugstr_w(sGDFBinaryPath), pHasAccess);
 900     *pHasAccess = TRUE;
 901     return S_OK;
 902 }
 903
 904 static const struct IGameExplorerVtbl GameExplorerImplVtbl =
 905 {
 906     GameExplorerImpl_QueryInterface,
 907     GameExplorerImpl_AddRef,
 908     GameExplorerImpl_Release,
 909     GameExplorerImpl_AddGame,
 910     GameExplorerImpl_RemoveGame,
 911     GameExplorerImpl_UpdateGame,
 912     GameExplorerImpl_VerifyAccess
 913 };
 914
 915
 916 static HRESULT WINAPI GameExplorer2Impl_QueryInterface(
 917         IGameExplorer2 *iface,
 918         REFIID riid,
 919         void **ppvObject)
 920 {
 921     GameExplorerImpl *This = impl_from_IGameExplorer2(iface);
 922     return GameExplorerImpl_QueryInterface(IGameExplorer_from_impl(This), riid, ppvObject);
 923 }
 924
 925 static ULONG WINAPI GameExplorer2Impl_AddRef(IGameExplorer2 *iface)
 926 {
 927     GameExplorerImpl *This = impl_from_IGameExplorer2(iface);
 928     return GameExplorerImpl_AddRef(IGameExplorer_from_impl(This));
 929 }
 930
 931 static ULONG WINAPI GameExplorer2Impl_Release(IGameExplorer2 *iface)
 932 {
 933     GameExplorerImpl *This = impl_from_IGameExplorer2(iface);
 934     return GameExplorerImpl_Release(IGameExplorer_from_impl(This));
 935 }
 936
 937 static HRESULT WINAPI GameExplorer2Impl_CheckAccess(
 938         IGameExplorer2 *iface,
 939         LPCWSTR binaryGDFPath,
 940         BOOL *pHasAccess)
 941 {
 942     GameExplorerImpl *This = impl_from_IGameExplorer2(iface);
 943     FIXME("stub (%p, %s, %p)\n", This, debugstr_w(binaryGDFPath), pHasAccess);
 944     return E_NOTIMPL;
 945 }
 946
 947 static HRESULT WINAPI GameExplorer2Impl_InstallGame(
 948         IGameExplorer2 *iface,
 949         LPCWSTR binaryGDFPath,
 950         LPCWSTR installDirectory,
 951         GAME_INSTALL_SCOPE installScope)
 952 {
 953     HRESULT hr;
 954     GUID instanceId;
 955     GameExplorerImpl *This = impl_from_IGameExplorer2(iface);
 956
 957     TRACE("(%p, %s, %s, 0x%x)\n", This, debugstr_w(binaryGDFPath), debugstr_w(installDirectory), installScope);
 958
 959     if(!binaryGDFPath)
 960         return E_INVALIDARG;
 961
 962     hr = GAMEUX_FindGameInstanceId(binaryGDFPath, GIS_CURRENT_USER, &instanceId);
 963
 964     if(hr == S_FALSE)
 965         hr = GAMEUX_FindGameInstanceId(binaryGDFPath, GIS_ALL_USERS, &instanceId);
 966
 967     if(hr == S_FALSE)
 968     {
 969         /* if game isn't yet registered, then install it */
 970         instanceId = GUID_NULL;
 971         hr = GAMEUX_RegisterGame(binaryGDFPath, installDirectory, installScope, &instanceId);
 972     }
 973     else if(hr == S_OK)
 974         /* otherwise, update game */
 975         hr = GAMEUX_UpdateGame(&instanceId);
 976
 977     return hr;
 978 }
 979
 980 static HRESULT WINAPI GameExplorer2Impl_UninstallGame(
 981         IGameExplorer2 *iface,
 982         LPCWSTR binaryGDFPath)
 983 {
 984     HRESULT hr;
 985     GUID instanceId;
 986     GameExplorerImpl *This = impl_from_IGameExplorer2(iface);
 987     TRACE("(%p, %s)\n", This, debugstr_w(binaryGDFPath));
 988
 989     if(!binaryGDFPath)
 990         return E_INVALIDARG;
 991
 992     hr = GAMEUX_FindGameInstanceId(binaryGDFPath, GIS_CURRENT_USER, &instanceId);
 993
 994     if(hr == S_FALSE)
 995         hr = GAMEUX_FindGameInstanceId(binaryGDFPath, GIS_ALL_USERS, &instanceId);
 996
 997     if(hr == S_OK)
 998         hr = GAMEUX_RemoveRegistryRecord(&instanceId);
 999
1000     return hr;
1001 }
1002
1003 static const struct IGameExplorer2Vtbl GameExplorer2ImplVtbl =
1004 {
1005     GameExplorer2Impl_QueryInterface,
1006     GameExplorer2Impl_AddRef,
1007     GameExplorer2Impl_Release,
1008     GameExplorer2Impl_InstallGame,
1009     GameExplorer2Impl_UninstallGame,
1010     GameExplorer2Impl_CheckAccess
1011 };
1012
1013 /*
1014  * Construction routine
1015  */
1016 HRESULT GameExplorer_create(
1017         IUnknown* pUnkOuter,
1018         IUnknown** ppObj)
1019 {
1020     GameExplorerImpl *pGameExplorer;
1021
1022     TRACE("(%p, %p)\n", pUnkOuter, ppObj);
1023
1024     pGameExplorer = HeapAlloc(GetProcessHeap(), 0, sizeof(*pGameExplorer));
1025
1026     if(!pGameExplorer)
1027         return E_OUTOFMEMORY;
1028
1029     pGameExplorer->lpGameExplorerVtbl = &GameExplorerImplVtbl;
1030     pGameExplorer->lpGameExplorer2Vtbl = &GameExplorer2ImplVtbl;
1031     pGameExplorer->ref = 1;
1032
1033     *ppObj = (IUnknown*)(&pGameExplorer->lpGameExplorerVtbl);
1034
1035     TRACE("returning iface: %p\n", *ppObj);
1036     return S_OK;
1037 }