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b39297ae TS |
1 | /* |
2 | * QEMU Guest Agent win32 VSS Provider installer | |
3 | * | |
4 | * Copyright Hitachi Data Systems Corp. 2013 | |
5 | * | |
6 | * Authors: | |
7 | * Tomoki Sekiyama <tomoki.sekiyama@hds.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | */ | |
12 | ||
e55eb806 | 13 | #include "qemu/osdep.h" |
b39297ae TS |
14 | |
15 | #include "vss-common.h" | |
a9c94277 | 16 | #include <inc/win2003/vscoordint.h> |
f342cc93 | 17 | #include "install.h" |
b39297ae TS |
18 | #include <wbemidl.h> |
19 | #include <comdef.h> | |
20 | #include <comutil.h> | |
009f38d9 DR |
21 | #include <sddl.h> |
22 | ||
23 | #define BUFFER_SIZE 1024 | |
b39297ae TS |
24 | |
25 | extern HINSTANCE g_hinstDll; | |
26 | ||
27 | const GUID CLSID_COMAdminCatalog = { 0xF618C514, 0xDFB8, 0x11d1, | |
28 | {0xA2, 0xCF, 0x00, 0x80, 0x5F, 0xC7, 0x92, 0x35} }; | |
bca4bf10 TS |
29 | const GUID IID_ICOMAdminCatalog2 = { 0x790C6E0B, 0x9194, 0x4cc9, |
30 | {0x94, 0x26, 0xA4, 0x8A, 0x63, 0x18, 0x56, 0x96} }; | |
b39297ae TS |
31 | const GUID CLSID_WbemLocator = { 0x4590f811, 0x1d3a, 0x11d0, |
32 | {0x89, 0x1f, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} }; | |
33 | const GUID IID_IWbemLocator = { 0xdc12a687, 0x737f, 0x11cf, | |
34 | {0x88, 0x4d, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} }; | |
35 | ||
36 | void errmsg(DWORD err, const char *text) | |
37 | { | |
38 | /* | |
39 | * `text' contains function call statement when errmsg is called via chk(). | |
40 | * To make error message more readable, we cut off the text after '('. | |
41 | * If text doesn't contains '(', negative precision is given, which is | |
42 | * treated as though it were missing. | |
43 | */ | |
44 | char *msg = NULL, *nul = strchr(text, '('); | |
45 | int len = nul ? nul - text : -1; | |
46 | ||
47 | FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
48 | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, | |
49 | NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
50 | (char *)&msg, 0, NULL); | |
51 | fprintf(stderr, "%.*s. (Error: %lx) %s\n", len, text, err, msg); | |
52 | LocalFree(msg); | |
53 | } | |
54 | ||
55 | static void errmsg_dialog(DWORD err, const char *text, const char *opt = "") | |
56 | { | |
57 | char *msg, buf[512]; | |
58 | ||
59 | FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
60 | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, | |
61 | NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
62 | (char *)&msg, 0, NULL); | |
63 | snprintf(buf, sizeof(buf), "%s%s. (Error: %lx) %s", text, opt, err, msg); | |
64 | MessageBox(NULL, buf, "Error from " QGA_PROVIDER_NAME, MB_OK|MB_ICONERROR); | |
65 | LocalFree(msg); | |
66 | } | |
67 | ||
68 | #define _chk(hr, status, msg, err_label) \ | |
69 | do { \ | |
70 | hr = (status); \ | |
71 | if (FAILED(hr)) { \ | |
72 | errmsg(hr, msg); \ | |
73 | goto err_label; \ | |
74 | } \ | |
75 | } while (0) | |
76 | ||
77 | #define chk(status) _chk(hr, status, "Failed to " #status, out) | |
78 | ||
9854202b TS |
79 | #if !defined(__MINGW64_VERSION_MAJOR) || !defined(__MINGW64_VERSION_MINOR) || \ |
80 | __MINGW64_VERSION_MAJOR * 100 + __MINGW64_VERSION_MINOR < 301 | |
b39297ae TS |
81 | void __stdcall _com_issue_error(HRESULT hr) |
82 | { | |
83 | errmsg(hr, "Unexpected error in COM"); | |
84 | } | |
9854202b | 85 | #endif |
b39297ae TS |
86 | |
87 | template<class T> | |
88 | HRESULT put_Value(ICatalogObject *pObj, LPCWSTR name, T val) | |
89 | { | |
90 | return pObj->put_Value(_bstr_t(name), _variant_t(val)); | |
91 | } | |
92 | ||
93 | /* Lookup Administrators group name from winmgmt */ | |
94 | static HRESULT GetAdminName(_bstr_t *name) | |
95 | { | |
96 | HRESULT hr; | |
97 | COMPointer<IWbemLocator> pLoc; | |
98 | COMPointer<IWbemServices> pSvc; | |
99 | COMPointer<IEnumWbemClassObject> pEnum; | |
100 | COMPointer<IWbemClassObject> pWobj; | |
101 | ULONG returned; | |
102 | _variant_t var; | |
103 | ||
104 | chk(CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER, | |
105 | IID_IWbemLocator, (LPVOID *)pLoc.replace())); | |
106 | chk(pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, NULL, | |
107 | 0, 0, 0, pSvc.replace())); | |
108 | chk(CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, | |
109 | NULL, RPC_C_AUTHN_LEVEL_CALL, | |
110 | RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE)); | |
111 | chk(pSvc->ExecQuery(_bstr_t(L"WQL"), | |
112 | _bstr_t(L"select * from Win32_Account where " | |
113 | "SID='S-1-5-32-544' and localAccount=TRUE"), | |
114 | WBEM_FLAG_RETURN_IMMEDIATELY | WBEM_FLAG_FORWARD_ONLY, | |
115 | NULL, pEnum.replace())); | |
116 | if (!pEnum) { | |
117 | hr = E_FAIL; | |
118 | errmsg(hr, "Failed to query for Administrators"); | |
119 | goto out; | |
120 | } | |
121 | chk(pEnum->Next(WBEM_INFINITE, 1, pWobj.replace(), &returned)); | |
122 | if (returned == 0) { | |
123 | hr = E_FAIL; | |
124 | errmsg(hr, "No Administrators found"); | |
125 | goto out; | |
126 | } | |
127 | ||
128 | chk(pWobj->Get(_bstr_t(L"Name"), 0, &var, 0, 0)); | |
129 | try { | |
130 | *name = var; | |
131 | } catch(...) { | |
132 | hr = E_FAIL; | |
133 | errmsg(hr, "Failed to get name of Administrators"); | |
134 | goto out; | |
135 | } | |
136 | ||
137 | out: | |
138 | return hr; | |
139 | } | |
140 | ||
009f38d9 DR |
141 | /* Acquire group or user name by SID */ |
142 | static HRESULT getNameByStringSID( | |
143 | const wchar_t *sid, LPWSTR buffer, LPDWORD bufferLen) | |
144 | { | |
145 | HRESULT hr = S_OK; | |
146 | PSID psid = NULL; | |
147 | SID_NAME_USE groupType; | |
148 | DWORD domainNameLen = BUFFER_SIZE; | |
149 | wchar_t domainName[BUFFER_SIZE]; | |
150 | ||
8cedc805 MR |
151 | if (!ConvertStringSidToSidW(sid, &psid)) { |
152 | hr = HRESULT_FROM_WIN32(GetLastError()); | |
153 | goto out; | |
154 | } | |
155 | if (!LookupAccountSidW(NULL, psid, buffer, bufferLen, | |
156 | domainName, &domainNameLen, &groupType)) { | |
157 | hr = HRESULT_FROM_WIN32(GetLastError()); | |
158 | /* Fall through and free psid */ | |
159 | } | |
009f38d9 DR |
160 | |
161 | LocalFree(psid); | |
162 | ||
163 | out: | |
164 | return hr; | |
165 | } | |
166 | ||
b39297ae TS |
167 | /* Find and iterate QGA VSS provider in COM+ Application Catalog */ |
168 | static HRESULT QGAProviderFind( | |
169 | HRESULT (*found)(ICatalogCollection *, int, void *), void *arg) | |
170 | { | |
171 | HRESULT hr; | |
172 | COMInitializer initializer; | |
173 | COMPointer<IUnknown> pUnknown; | |
bca4bf10 | 174 | COMPointer<ICOMAdminCatalog2> pCatalog; |
b39297ae TS |
175 | COMPointer<ICatalogCollection> pColl; |
176 | COMPointer<ICatalogObject> pObj; | |
177 | _variant_t var; | |
178 | long i, n; | |
179 | ||
180 | chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER, | |
181 | IID_IUnknown, (void **)pUnknown.replace())); | |
bca4bf10 | 182 | chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2, |
b39297ae TS |
183 | (void **)pCatalog.replace())); |
184 | chk(pCatalog->GetCollection(_bstr_t(L"Applications"), | |
185 | (IDispatch **)pColl.replace())); | |
186 | chk(pColl->Populate()); | |
187 | ||
188 | chk(pColl->get_Count(&n)); | |
189 | for (i = n - 1; i >= 0; i--) { | |
190 | chk(pColl->get_Item(i, (IDispatch **)pObj.replace())); | |
191 | chk(pObj->get_Value(_bstr_t(L"Name"), &var)); | |
192 | if (var == _variant_t(QGA_PROVIDER_LNAME)) { | |
193 | if (FAILED(found(pColl, i, arg))) { | |
194 | goto out; | |
195 | } | |
196 | } | |
197 | } | |
198 | chk(pColl->SaveChanges(&n)); | |
199 | ||
200 | out: | |
201 | return hr; | |
202 | } | |
203 | ||
204 | /* Count QGA VSS provider in COM+ Application Catalog */ | |
205 | static HRESULT QGAProviderCount(ICatalogCollection *coll, int i, void *arg) | |
206 | { | |
207 | (*(int *)arg)++; | |
208 | return S_OK; | |
209 | } | |
210 | ||
211 | /* Remove QGA VSS provider from COM+ Application Catalog Collection */ | |
212 | static HRESULT QGAProviderRemove(ICatalogCollection *coll, int i, void *arg) | |
213 | { | |
214 | HRESULT hr; | |
215 | ||
216 | fprintf(stderr, "Removing COM+ Application: %s\n", QGA_PROVIDER_NAME); | |
217 | chk(coll->Remove(i)); | |
218 | out: | |
219 | return hr; | |
220 | } | |
221 | ||
222 | /* Unregister this module from COM+ Applications Catalog */ | |
223 | STDAPI COMUnregister(void) | |
224 | { | |
225 | HRESULT hr; | |
226 | ||
227 | DllUnregisterServer(); | |
228 | chk(QGAProviderFind(QGAProviderRemove, NULL)); | |
229 | out: | |
230 | return hr; | |
231 | } | |
232 | ||
233 | /* Register this module to COM+ Applications Catalog */ | |
234 | STDAPI COMRegister(void) | |
235 | { | |
236 | HRESULT hr; | |
237 | COMInitializer initializer; | |
238 | COMPointer<IUnknown> pUnknown; | |
bca4bf10 | 239 | COMPointer<ICOMAdminCatalog2> pCatalog; |
b39297ae TS |
240 | COMPointer<ICatalogCollection> pApps, pRoles, pUsersInRole; |
241 | COMPointer<ICatalogObject> pObj; | |
242 | long n; | |
243 | _bstr_t name; | |
244 | _variant_t key; | |
245 | CHAR dllPath[MAX_PATH], tlbPath[MAX_PATH]; | |
246 | bool unregisterOnFailure = false; | |
247 | int count = 0; | |
009f38d9 DR |
248 | DWORD bufferLen = BUFFER_SIZE; |
249 | wchar_t buffer[BUFFER_SIZE]; | |
250 | const wchar_t *administratorsGroupSID = L"S-1-5-32-544"; | |
251 | const wchar_t *systemUserSID = L"S-1-5-18"; | |
b39297ae TS |
252 | |
253 | if (!g_hinstDll) { | |
254 | errmsg(E_FAIL, "Failed to initialize DLL"); | |
255 | return E_FAIL; | |
256 | } | |
257 | ||
258 | chk(QGAProviderFind(QGAProviderCount, (void *)&count)); | |
259 | if (count) { | |
260 | errmsg(E_ABORT, "QGA VSS Provider is already installed"); | |
261 | return E_ABORT; | |
262 | } | |
263 | ||
264 | chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER, | |
265 | IID_IUnknown, (void **)pUnknown.replace())); | |
bca4bf10 | 266 | chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2, |
b39297ae TS |
267 | (void **)pCatalog.replace())); |
268 | ||
269 | /* Install COM+ Component */ | |
270 | ||
271 | chk(pCatalog->GetCollection(_bstr_t(L"Applications"), | |
272 | (IDispatch **)pApps.replace())); | |
273 | chk(pApps->Populate()); | |
274 | chk(pApps->Add((IDispatch **)&pObj)); | |
275 | chk(put_Value(pObj, L"Name", QGA_PROVIDER_LNAME)); | |
276 | chk(put_Value(pObj, L"Description", QGA_PROVIDER_LNAME)); | |
277 | chk(put_Value(pObj, L"ApplicationAccessChecksEnabled", true)); | |
278 | chk(put_Value(pObj, L"Authentication", short(6))); | |
279 | chk(put_Value(pObj, L"AuthenticationCapability", short(2))); | |
280 | chk(put_Value(pObj, L"ImpersonationLevel", short(2))); | |
281 | chk(pApps->SaveChanges(&n)); | |
282 | ||
283 | /* The app should be deleted if something fails after SaveChanges */ | |
284 | unregisterOnFailure = true; | |
285 | ||
286 | chk(pObj->get_Key(&key)); | |
287 | ||
288 | if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) { | |
289 | hr = HRESULT_FROM_WIN32(GetLastError()); | |
290 | errmsg(hr, "GetModuleFileName failed"); | |
291 | goto out; | |
292 | } | |
293 | n = strlen(dllPath); | |
294 | if (n < 3) { | |
295 | hr = E_FAIL; | |
296 | errmsg(hr, "Failed to lookup dll"); | |
297 | goto out; | |
298 | } | |
299 | strcpy(tlbPath, dllPath); | |
300 | strcpy(tlbPath+n-3, "tlb"); | |
301 | fprintf(stderr, "Registering " QGA_PROVIDER_NAME ":\n"); | |
302 | fprintf(stderr, " %s\n", dllPath); | |
303 | fprintf(stderr, " %s\n", tlbPath); | |
304 | if (!PathFileExists(tlbPath)) { | |
305 | hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND); | |
306 | errmsg(hr, "Failed to lookup tlb"); | |
307 | goto out; | |
308 | } | |
309 | ||
bca4bf10 TS |
310 | chk(pCatalog->CreateServiceForApplication( |
311 | _bstr_t(QGA_PROVIDER_LNAME), _bstr_t(QGA_PROVIDER_LNAME), | |
f342cc93 | 312 | _bstr_t(L"SERVICE_DEMAND_START"), _bstr_t(L"SERVICE_ERROR_NORMAL"), |
bca4bf10 | 313 | _bstr_t(L""), _bstr_t(L".\\localsystem"), _bstr_t(L""), FALSE)); |
b39297ae TS |
314 | chk(pCatalog->InstallComponent(_bstr_t(QGA_PROVIDER_LNAME), |
315 | _bstr_t(dllPath), _bstr_t(tlbPath), | |
316 | _bstr_t(""))); | |
317 | ||
318 | /* Setup roles of the applicaion */ | |
319 | ||
009f38d9 | 320 | chk(getNameByStringSID(administratorsGroupSID, buffer, &bufferLen)); |
b39297ae TS |
321 | chk(pApps->GetCollection(_bstr_t(L"Roles"), key, |
322 | (IDispatch **)pRoles.replace())); | |
323 | chk(pRoles->Populate()); | |
324 | chk(pRoles->Add((IDispatch **)pObj.replace())); | |
009f38d9 | 325 | chk(put_Value(pObj, L"Name", buffer)); |
b39297ae TS |
326 | chk(put_Value(pObj, L"Description", L"Administrators group")); |
327 | chk(pRoles->SaveChanges(&n)); | |
328 | chk(pObj->get_Key(&key)); | |
329 | ||
330 | /* Setup users in the role */ | |
331 | ||
332 | chk(pRoles->GetCollection(_bstr_t(L"UsersInRole"), key, | |
333 | (IDispatch **)pUsersInRole.replace())); | |
334 | chk(pUsersInRole->Populate()); | |
335 | ||
336 | chk(pUsersInRole->Add((IDispatch **)pObj.replace())); | |
337 | chk(GetAdminName(&name)); | |
338 | chk(put_Value(pObj, L"User", _bstr_t(".\\") + name)); | |
339 | ||
009f38d9 DR |
340 | bufferLen = BUFFER_SIZE; |
341 | chk(getNameByStringSID(systemUserSID, buffer, &bufferLen)); | |
b39297ae | 342 | chk(pUsersInRole->Add((IDispatch **)pObj.replace())); |
009f38d9 | 343 | chk(put_Value(pObj, L"User", buffer)); |
b39297ae TS |
344 | chk(pUsersInRole->SaveChanges(&n)); |
345 | ||
346 | out: | |
347 | if (unregisterOnFailure && FAILED(hr)) { | |
348 | COMUnregister(); | |
349 | } | |
350 | ||
351 | return hr; | |
352 | } | |
353 | ||
354 | ||
355 | static BOOL CreateRegistryKey(LPCTSTR key, LPCTSTR value, LPCTSTR data) | |
356 | { | |
357 | HKEY hKey; | |
358 | LONG ret; | |
359 | DWORD size; | |
360 | ||
361 | ret = RegCreateKeyEx(HKEY_CLASSES_ROOT, key, 0, NULL, | |
362 | REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL); | |
363 | if (ret != ERROR_SUCCESS) { | |
364 | goto out; | |
365 | } | |
366 | ||
367 | if (data != NULL) { | |
368 | size = strlen(data) + 1; | |
369 | } else { | |
370 | size = 0; | |
371 | } | |
372 | ||
373 | ret = RegSetValueEx(hKey, value, 0, REG_SZ, (LPBYTE)data, size); | |
374 | RegCloseKey(hKey); | |
375 | ||
376 | out: | |
377 | if (ret != ERROR_SUCCESS) { | |
378 | /* As we cannot printf within DllRegisterServer(), show a dialog. */ | |
379 | errmsg_dialog(ret, "Cannot add registry", key); | |
380 | return FALSE; | |
381 | } | |
382 | return TRUE; | |
383 | } | |
384 | ||
385 | /* Register this dll as a VSS provider */ | |
386 | STDAPI DllRegisterServer(void) | |
387 | { | |
388 | COMInitializer initializer; | |
389 | COMPointer<IVssAdmin> pVssAdmin; | |
390 | HRESULT hr = E_FAIL; | |
391 | char dllPath[MAX_PATH]; | |
392 | char key[256]; | |
393 | ||
394 | if (!g_hinstDll) { | |
395 | errmsg_dialog(hr, "Module instance is not available"); | |
396 | goto out; | |
397 | } | |
398 | ||
399 | /* Add this module to registery */ | |
400 | ||
401 | sprintf(key, "CLSID\\%s", g_szClsid); | |
402 | if (!CreateRegistryKey(key, NULL, g_szClsid)) { | |
403 | goto out; | |
404 | } | |
405 | ||
406 | if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) { | |
407 | errmsg_dialog(GetLastError(), "GetModuleFileName failed"); | |
408 | goto out; | |
409 | } | |
410 | ||
411 | sprintf(key, "CLSID\\%s\\InprocServer32", g_szClsid); | |
412 | if (!CreateRegistryKey(key, NULL, dllPath)) { | |
413 | goto out; | |
414 | } | |
415 | ||
416 | if (!CreateRegistryKey(key, "ThreadingModel", "Apartment")) { | |
417 | goto out; | |
418 | } | |
419 | ||
420 | sprintf(key, "CLSID\\%s\\ProgID", g_szClsid); | |
421 | if (!CreateRegistryKey(key, NULL, g_szProgid)) { | |
422 | goto out; | |
423 | } | |
424 | ||
425 | if (!CreateRegistryKey(g_szProgid, NULL, QGA_PROVIDER_NAME)) { | |
426 | goto out; | |
427 | } | |
428 | ||
429 | sprintf(key, "%s\\CLSID", g_szProgid); | |
430 | if (!CreateRegistryKey(key, NULL, g_szClsid)) { | |
431 | goto out; | |
432 | } | |
433 | ||
434 | hr = CoCreateInstance(CLSID_VSSCoordinator, NULL, CLSCTX_ALL, | |
435 | IID_IVssAdmin, (void **)pVssAdmin.replace()); | |
436 | if (FAILED(hr)) { | |
437 | errmsg_dialog(hr, "CoCreateInstance(VSSCoordinator) failed"); | |
438 | goto out; | |
439 | } | |
440 | ||
441 | hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider, | |
442 | const_cast<WCHAR*>(QGA_PROVIDER_LNAME), | |
443 | VSS_PROV_SOFTWARE, | |
444 | const_cast<WCHAR*>(QGA_PROVIDER_VERSION), | |
445 | g_gProviderVersion); | |
446 | if (FAILED(hr)) { | |
447 | errmsg_dialog(hr, "RegisterProvider failed"); | |
448 | } | |
449 | ||
450 | out: | |
451 | if (FAILED(hr)) { | |
452 | DllUnregisterServer(); | |
453 | } | |
454 | ||
455 | return hr; | |
456 | } | |
457 | ||
458 | /* Unregister this VSS hardware provider from the system */ | |
459 | STDAPI DllUnregisterServer(void) | |
460 | { | |
461 | TCHAR key[256]; | |
462 | COMInitializer initializer; | |
463 | COMPointer<IVssAdmin> pVssAdmin; | |
464 | ||
465 | HRESULT hr = CoCreateInstance(CLSID_VSSCoordinator, | |
466 | NULL, CLSCTX_ALL, IID_IVssAdmin, | |
467 | (void **)pVssAdmin.replace()); | |
468 | if (SUCCEEDED(hr)) { | |
469 | hr = pVssAdmin->UnregisterProvider(g_gProviderId); | |
470 | } else { | |
471 | errmsg(hr, "CoCreateInstance(VSSCoordinator) failed"); | |
472 | } | |
473 | ||
474 | sprintf(key, "CLSID\\%s", g_szClsid); | |
475 | SHDeleteKey(HKEY_CLASSES_ROOT, key); | |
476 | SHDeleteKey(HKEY_CLASSES_ROOT, g_szProgid); | |
477 | ||
478 | return S_OK; /* Uninstall should never fail */ | |
479 | } | |
480 | ||
481 | ||
482 | /* Support function to convert ASCII string into BSTR (used in _bstr_t) */ | |
483 | namespace _com_util | |
484 | { | |
485 | BSTR WINAPI ConvertStringToBSTR(const char *ascii) { | |
486 | int len = strlen(ascii); | |
487 | BSTR bstr = SysAllocStringLen(NULL, len); | |
488 | ||
489 | if (!bstr) { | |
490 | return NULL; | |
491 | } | |
492 | ||
493 | if (mbstowcs(bstr, ascii, len) == (size_t)-1) { | |
494 | fprintf(stderr, "Failed to convert string '%s' into BSTR", ascii); | |
495 | bstr[0] = 0; | |
496 | } | |
497 | return bstr; | |
498 | } | |
499 | } | |
f342cc93 SJ |
500 | |
501 | /* Stop QGA VSS provider service from COM+ Application Admin Catalog */ | |
502 | ||
503 | STDAPI StopService(void) | |
504 | { | |
505 | HRESULT hr; | |
506 | COMInitializer initializer; | |
507 | COMPointer<IUnknown> pUnknown; | |
508 | COMPointer<ICOMAdminCatalog2> pCatalog; | |
509 | ||
510 | int count = 0; | |
511 | ||
512 | chk(QGAProviderFind(QGAProviderCount, (void *)&count)); | |
513 | if (count) { | |
514 | chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER, | |
515 | IID_IUnknown, (void **)pUnknown.replace())); | |
516 | chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2, | |
517 | (void **)pCatalog.replace())); | |
518 | chk(pCatalog->ShutdownApplication(_bstr_t(QGA_PROVIDER_LNAME))); | |
519 | } | |
520 | ||
521 | out: | |
522 | return hr; | |
523 | } |