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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" | |
2f84cf69 | 16 | #include "vss-debug.h" |
872b69e6 | 17 | #ifdef HAVE_VSS_SDK |
61fb0bd1 | 18 | #include <vscoordint.h> |
872b69e6 MAL |
19 | #else |
20 | #include <vsadmin.h> | |
21 | #endif | |
f342cc93 | 22 | #include "install.h" |
b39297ae TS |
23 | #include <wbemidl.h> |
24 | #include <comdef.h> | |
25 | #include <comutil.h> | |
009f38d9 | 26 | #include <sddl.h> |
917ebcb1 | 27 | #include <winsvc.h> |
009f38d9 DR |
28 | |
29 | #define BUFFER_SIZE 1024 | |
b39297ae TS |
30 | |
31 | extern HINSTANCE g_hinstDll; | |
32 | ||
33 | const GUID CLSID_COMAdminCatalog = { 0xF618C514, 0xDFB8, 0x11d1, | |
34 | {0xA2, 0xCF, 0x00, 0x80, 0x5F, 0xC7, 0x92, 0x35} }; | |
bca4bf10 TS |
35 | const GUID IID_ICOMAdminCatalog2 = { 0x790C6E0B, 0x9194, 0x4cc9, |
36 | {0x94, 0x26, 0xA4, 0x8A, 0x63, 0x18, 0x56, 0x96} }; | |
b39297ae TS |
37 | const GUID CLSID_WbemLocator = { 0x4590f811, 0x1d3a, 0x11d0, |
38 | {0x89, 0x1f, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} }; | |
39 | const GUID IID_IWbemLocator = { 0xdc12a687, 0x737f, 0x11cf, | |
40 | {0x88, 0x4d, 0x00, 0xaa, 0x00, 0x4b, 0x2e, 0x24} }; | |
41 | ||
42 | void errmsg(DWORD err, const char *text) | |
43 | { | |
44 | /* | |
45 | * `text' contains function call statement when errmsg is called via chk(). | |
46 | * To make error message more readable, we cut off the text after '('. | |
47 | * If text doesn't contains '(', negative precision is given, which is | |
48 | * treated as though it were missing. | |
49 | */ | |
7bd16378 HK |
50 | char *msg = NULL; |
51 | const char *nul = strchr(text, '('); | |
b39297ae TS |
52 | int len = nul ? nul - text : -1; |
53 | ||
54 | FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
55 | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, | |
56 | NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
57 | (char *)&msg, 0, NULL); | |
2f84cf69 | 58 | qga_debug("%.*s. (Error: %lx) %s", len, text, err, msg); |
b39297ae TS |
59 | LocalFree(msg); |
60 | } | |
61 | ||
62 | static void errmsg_dialog(DWORD err, const char *text, const char *opt = "") | |
63 | { | |
64 | char *msg, buf[512]; | |
65 | ||
66 | FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
67 | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, | |
68 | NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
69 | (char *)&msg, 0, NULL); | |
70 | snprintf(buf, sizeof(buf), "%s%s. (Error: %lx) %s", text, opt, err, msg); | |
71 | MessageBox(NULL, buf, "Error from " QGA_PROVIDER_NAME, MB_OK|MB_ICONERROR); | |
72 | LocalFree(msg); | |
73 | } | |
74 | ||
75 | #define _chk(hr, status, msg, err_label) \ | |
76 | do { \ | |
77 | hr = (status); \ | |
78 | if (FAILED(hr)) { \ | |
79 | errmsg(hr, msg); \ | |
80 | goto err_label; \ | |
81 | } \ | |
82 | } while (0) | |
83 | ||
84 | #define chk(status) _chk(hr, status, "Failed to " #status, out) | |
85 | ||
9854202b TS |
86 | #if !defined(__MINGW64_VERSION_MAJOR) || !defined(__MINGW64_VERSION_MINOR) || \ |
87 | __MINGW64_VERSION_MAJOR * 100 + __MINGW64_VERSION_MINOR < 301 | |
b39297ae TS |
88 | void __stdcall _com_issue_error(HRESULT hr) |
89 | { | |
90 | errmsg(hr, "Unexpected error in COM"); | |
91 | } | |
9854202b | 92 | #endif |
b39297ae TS |
93 | |
94 | template<class T> | |
95 | HRESULT put_Value(ICatalogObject *pObj, LPCWSTR name, T val) | |
96 | { | |
97 | return pObj->put_Value(_bstr_t(name), _variant_t(val)); | |
98 | } | |
99 | ||
100 | /* Lookup Administrators group name from winmgmt */ | |
101 | static HRESULT GetAdminName(_bstr_t *name) | |
102 | { | |
61df91b3 KK |
103 | qga_debug_begin; |
104 | ||
b39297ae TS |
105 | HRESULT hr; |
106 | COMPointer<IWbemLocator> pLoc; | |
107 | COMPointer<IWbemServices> pSvc; | |
108 | COMPointer<IEnumWbemClassObject> pEnum; | |
109 | COMPointer<IWbemClassObject> pWobj; | |
110 | ULONG returned; | |
111 | _variant_t var; | |
112 | ||
113 | chk(CoCreateInstance(CLSID_WbemLocator, NULL, CLSCTX_INPROC_SERVER, | |
114 | IID_IWbemLocator, (LPVOID *)pLoc.replace())); | |
115 | chk(pLoc->ConnectServer(_bstr_t(L"ROOT\\CIMV2"), NULL, NULL, NULL, | |
116 | 0, 0, 0, pSvc.replace())); | |
117 | chk(CoSetProxyBlanket(pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, | |
118 | NULL, RPC_C_AUTHN_LEVEL_CALL, | |
119 | RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE)); | |
120 | chk(pSvc->ExecQuery(_bstr_t(L"WQL"), | |
121 | _bstr_t(L"select * from Win32_Account where " | |
122 | "SID='S-1-5-32-544' and localAccount=TRUE"), | |
123 | WBEM_FLAG_RETURN_IMMEDIATELY | WBEM_FLAG_FORWARD_ONLY, | |
124 | NULL, pEnum.replace())); | |
125 | if (!pEnum) { | |
126 | hr = E_FAIL; | |
127 | errmsg(hr, "Failed to query for Administrators"); | |
128 | goto out; | |
129 | } | |
130 | chk(pEnum->Next(WBEM_INFINITE, 1, pWobj.replace(), &returned)); | |
131 | if (returned == 0) { | |
132 | hr = E_FAIL; | |
133 | errmsg(hr, "No Administrators found"); | |
134 | goto out; | |
135 | } | |
136 | ||
137 | chk(pWobj->Get(_bstr_t(L"Name"), 0, &var, 0, 0)); | |
138 | try { | |
139 | *name = var; | |
140 | } catch(...) { | |
141 | hr = E_FAIL; | |
142 | errmsg(hr, "Failed to get name of Administrators"); | |
143 | goto out; | |
144 | } | |
145 | ||
146 | out: | |
61df91b3 | 147 | qga_debug_end; |
b39297ae TS |
148 | return hr; |
149 | } | |
150 | ||
009f38d9 DR |
151 | /* Acquire group or user name by SID */ |
152 | static HRESULT getNameByStringSID( | |
153 | const wchar_t *sid, LPWSTR buffer, LPDWORD bufferLen) | |
154 | { | |
61df91b3 KK |
155 | qga_debug_begin; |
156 | ||
009f38d9 DR |
157 | HRESULT hr = S_OK; |
158 | PSID psid = NULL; | |
159 | SID_NAME_USE groupType; | |
160 | DWORD domainNameLen = BUFFER_SIZE; | |
161 | wchar_t domainName[BUFFER_SIZE]; | |
162 | ||
8cedc805 MR |
163 | if (!ConvertStringSidToSidW(sid, &psid)) { |
164 | hr = HRESULT_FROM_WIN32(GetLastError()); | |
165 | goto out; | |
166 | } | |
167 | if (!LookupAccountSidW(NULL, psid, buffer, bufferLen, | |
168 | domainName, &domainNameLen, &groupType)) { | |
169 | hr = HRESULT_FROM_WIN32(GetLastError()); | |
170 | /* Fall through and free psid */ | |
171 | } | |
009f38d9 DR |
172 | |
173 | LocalFree(psid); | |
174 | ||
175 | out: | |
61df91b3 | 176 | qga_debug_end; |
009f38d9 DR |
177 | return hr; |
178 | } | |
179 | ||
b39297ae TS |
180 | /* Find and iterate QGA VSS provider in COM+ Application Catalog */ |
181 | static HRESULT QGAProviderFind( | |
182 | HRESULT (*found)(ICatalogCollection *, int, void *), void *arg) | |
183 | { | |
61df91b3 KK |
184 | qga_debug_begin; |
185 | ||
b39297ae TS |
186 | HRESULT hr; |
187 | COMInitializer initializer; | |
188 | COMPointer<IUnknown> pUnknown; | |
bca4bf10 | 189 | COMPointer<ICOMAdminCatalog2> pCatalog; |
b39297ae TS |
190 | COMPointer<ICatalogCollection> pColl; |
191 | COMPointer<ICatalogObject> pObj; | |
192 | _variant_t var; | |
193 | long i, n; | |
194 | ||
195 | chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER, | |
196 | IID_IUnknown, (void **)pUnknown.replace())); | |
bca4bf10 | 197 | chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2, |
b39297ae TS |
198 | (void **)pCatalog.replace())); |
199 | chk(pCatalog->GetCollection(_bstr_t(L"Applications"), | |
200 | (IDispatch **)pColl.replace())); | |
201 | chk(pColl->Populate()); | |
202 | ||
203 | chk(pColl->get_Count(&n)); | |
204 | for (i = n - 1; i >= 0; i--) { | |
205 | chk(pColl->get_Item(i, (IDispatch **)pObj.replace())); | |
206 | chk(pObj->get_Value(_bstr_t(L"Name"), &var)); | |
207 | if (var == _variant_t(QGA_PROVIDER_LNAME)) { | |
208 | if (FAILED(found(pColl, i, arg))) { | |
209 | goto out; | |
210 | } | |
211 | } | |
212 | } | |
213 | chk(pColl->SaveChanges(&n)); | |
214 | ||
215 | out: | |
61df91b3 | 216 | qga_debug_end; |
b39297ae TS |
217 | return hr; |
218 | } | |
219 | ||
220 | /* Count QGA VSS provider in COM+ Application Catalog */ | |
221 | static HRESULT QGAProviderCount(ICatalogCollection *coll, int i, void *arg) | |
222 | { | |
61df91b3 KK |
223 | qga_debug_begin; |
224 | ||
b39297ae | 225 | (*(int *)arg)++; |
61df91b3 KK |
226 | |
227 | qga_debug_end; | |
b39297ae TS |
228 | return S_OK; |
229 | } | |
230 | ||
231 | /* Remove QGA VSS provider from COM+ Application Catalog Collection */ | |
232 | static HRESULT QGAProviderRemove(ICatalogCollection *coll, int i, void *arg) | |
233 | { | |
61df91b3 | 234 | qga_debug_begin; |
b39297ae TS |
235 | HRESULT hr; |
236 | ||
2f84cf69 | 237 | qga_debug("Removing COM+ Application: %s", QGA_PROVIDER_NAME); |
b39297ae TS |
238 | chk(coll->Remove(i)); |
239 | out: | |
61df91b3 | 240 | qga_debug_end; |
b39297ae TS |
241 | return hr; |
242 | } | |
243 | ||
244 | /* Unregister this module from COM+ Applications Catalog */ | |
245 | STDAPI COMUnregister(void) | |
246 | { | |
61df91b3 KK |
247 | qga_debug_begin; |
248 | ||
b39297ae TS |
249 | HRESULT hr; |
250 | ||
251 | DllUnregisterServer(); | |
252 | chk(QGAProviderFind(QGAProviderRemove, NULL)); | |
253 | out: | |
61df91b3 | 254 | qga_debug_end; |
b39297ae TS |
255 | return hr; |
256 | } | |
257 | ||
258 | /* Register this module to COM+ Applications Catalog */ | |
259 | STDAPI COMRegister(void) | |
260 | { | |
61df91b3 KK |
261 | qga_debug_begin; |
262 | ||
b39297ae TS |
263 | HRESULT hr; |
264 | COMInitializer initializer; | |
265 | COMPointer<IUnknown> pUnknown; | |
bca4bf10 | 266 | COMPointer<ICOMAdminCatalog2> pCatalog; |
b39297ae TS |
267 | COMPointer<ICatalogCollection> pApps, pRoles, pUsersInRole; |
268 | COMPointer<ICatalogObject> pObj; | |
269 | long n; | |
270 | _bstr_t name; | |
271 | _variant_t key; | |
272 | CHAR dllPath[MAX_PATH], tlbPath[MAX_PATH]; | |
273 | bool unregisterOnFailure = false; | |
274 | int count = 0; | |
009f38d9 DR |
275 | DWORD bufferLen = BUFFER_SIZE; |
276 | wchar_t buffer[BUFFER_SIZE]; | |
277 | const wchar_t *administratorsGroupSID = L"S-1-5-32-544"; | |
278 | const wchar_t *systemUserSID = L"S-1-5-18"; | |
b39297ae TS |
279 | |
280 | if (!g_hinstDll) { | |
281 | errmsg(E_FAIL, "Failed to initialize DLL"); | |
61df91b3 | 282 | qga_debug_end; |
b39297ae TS |
283 | return E_FAIL; |
284 | } | |
285 | ||
286 | chk(QGAProviderFind(QGAProviderCount, (void *)&count)); | |
287 | if (count) { | |
288 | errmsg(E_ABORT, "QGA VSS Provider is already installed"); | |
61df91b3 | 289 | qga_debug_end; |
b39297ae TS |
290 | return E_ABORT; |
291 | } | |
292 | ||
293 | chk(CoCreateInstance(CLSID_COMAdminCatalog, NULL, CLSCTX_INPROC_SERVER, | |
294 | IID_IUnknown, (void **)pUnknown.replace())); | |
bca4bf10 | 295 | chk(pUnknown->QueryInterface(IID_ICOMAdminCatalog2, |
b39297ae TS |
296 | (void **)pCatalog.replace())); |
297 | ||
298 | /* Install COM+ Component */ | |
299 | ||
300 | chk(pCatalog->GetCollection(_bstr_t(L"Applications"), | |
301 | (IDispatch **)pApps.replace())); | |
302 | chk(pApps->Populate()); | |
303 | chk(pApps->Add((IDispatch **)&pObj)); | |
304 | chk(put_Value(pObj, L"Name", QGA_PROVIDER_LNAME)); | |
305 | chk(put_Value(pObj, L"Description", QGA_PROVIDER_LNAME)); | |
306 | chk(put_Value(pObj, L"ApplicationAccessChecksEnabled", true)); | |
307 | chk(put_Value(pObj, L"Authentication", short(6))); | |
308 | chk(put_Value(pObj, L"AuthenticationCapability", short(2))); | |
309 | chk(put_Value(pObj, L"ImpersonationLevel", short(2))); | |
310 | chk(pApps->SaveChanges(&n)); | |
311 | ||
312 | /* The app should be deleted if something fails after SaveChanges */ | |
313 | unregisterOnFailure = true; | |
314 | ||
315 | chk(pObj->get_Key(&key)); | |
316 | ||
317 | if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) { | |
318 | hr = HRESULT_FROM_WIN32(GetLastError()); | |
319 | errmsg(hr, "GetModuleFileName failed"); | |
320 | goto out; | |
321 | } | |
322 | n = strlen(dllPath); | |
323 | if (n < 3) { | |
324 | hr = E_FAIL; | |
325 | errmsg(hr, "Failed to lookup dll"); | |
326 | goto out; | |
327 | } | |
328 | strcpy(tlbPath, dllPath); | |
329 | strcpy(tlbPath+n-3, "tlb"); | |
2f84cf69 KK |
330 | qga_debug("Registering " QGA_PROVIDER_NAME ": %s %s", |
331 | dllPath, tlbPath); | |
b39297ae TS |
332 | if (!PathFileExists(tlbPath)) { |
333 | hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND); | |
334 | errmsg(hr, "Failed to lookup tlb"); | |
335 | goto out; | |
336 | } | |
337 | ||
bca4bf10 TS |
338 | chk(pCatalog->CreateServiceForApplication( |
339 | _bstr_t(QGA_PROVIDER_LNAME), _bstr_t(QGA_PROVIDER_LNAME), | |
f342cc93 | 340 | _bstr_t(L"SERVICE_DEMAND_START"), _bstr_t(L"SERVICE_ERROR_NORMAL"), |
bca4bf10 | 341 | _bstr_t(L""), _bstr_t(L".\\localsystem"), _bstr_t(L""), FALSE)); |
b39297ae TS |
342 | chk(pCatalog->InstallComponent(_bstr_t(QGA_PROVIDER_LNAME), |
343 | _bstr_t(dllPath), _bstr_t(tlbPath), | |
344 | _bstr_t(""))); | |
345 | ||
01dc0651 | 346 | /* Setup roles of the application */ |
b39297ae | 347 | |
009f38d9 | 348 | chk(getNameByStringSID(administratorsGroupSID, buffer, &bufferLen)); |
b39297ae TS |
349 | chk(pApps->GetCollection(_bstr_t(L"Roles"), key, |
350 | (IDispatch **)pRoles.replace())); | |
351 | chk(pRoles->Populate()); | |
352 | chk(pRoles->Add((IDispatch **)pObj.replace())); | |
009f38d9 | 353 | chk(put_Value(pObj, L"Name", buffer)); |
b39297ae TS |
354 | chk(put_Value(pObj, L"Description", L"Administrators group")); |
355 | chk(pRoles->SaveChanges(&n)); | |
356 | chk(pObj->get_Key(&key)); | |
357 | ||
358 | /* Setup users in the role */ | |
359 | ||
360 | chk(pRoles->GetCollection(_bstr_t(L"UsersInRole"), key, | |
361 | (IDispatch **)pUsersInRole.replace())); | |
362 | chk(pUsersInRole->Populate()); | |
363 | ||
364 | chk(pUsersInRole->Add((IDispatch **)pObj.replace())); | |
365 | chk(GetAdminName(&name)); | |
366 | chk(put_Value(pObj, L"User", _bstr_t(".\\") + name)); | |
367 | ||
009f38d9 DR |
368 | bufferLen = BUFFER_SIZE; |
369 | chk(getNameByStringSID(systemUserSID, buffer, &bufferLen)); | |
b39297ae | 370 | chk(pUsersInRole->Add((IDispatch **)pObj.replace())); |
009f38d9 | 371 | chk(put_Value(pObj, L"User", buffer)); |
b39297ae TS |
372 | chk(pUsersInRole->SaveChanges(&n)); |
373 | ||
374 | out: | |
375 | if (unregisterOnFailure && FAILED(hr)) { | |
376 | COMUnregister(); | |
377 | } | |
378 | ||
61df91b3 | 379 | qga_debug_end; |
b39297ae TS |
380 | return hr; |
381 | } | |
382 | ||
07ce178a KK |
383 | STDAPI_(void) CALLBACK DLLCOMRegister(HWND, HINSTANCE, LPSTR, int) |
384 | { | |
385 | COMRegister(); | |
386 | } | |
387 | ||
388 | STDAPI_(void) CALLBACK DLLCOMUnregister(HWND, HINSTANCE, LPSTR, int) | |
389 | { | |
390 | COMUnregister(); | |
391 | } | |
b39297ae TS |
392 | |
393 | static BOOL CreateRegistryKey(LPCTSTR key, LPCTSTR value, LPCTSTR data) | |
394 | { | |
61df91b3 KK |
395 | qga_debug_begin; |
396 | ||
b39297ae TS |
397 | HKEY hKey; |
398 | LONG ret; | |
399 | DWORD size; | |
400 | ||
401 | ret = RegCreateKeyEx(HKEY_CLASSES_ROOT, key, 0, NULL, | |
402 | REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL); | |
403 | if (ret != ERROR_SUCCESS) { | |
404 | goto out; | |
405 | } | |
406 | ||
407 | if (data != NULL) { | |
408 | size = strlen(data) + 1; | |
409 | } else { | |
410 | size = 0; | |
411 | } | |
412 | ||
413 | ret = RegSetValueEx(hKey, value, 0, REG_SZ, (LPBYTE)data, size); | |
414 | RegCloseKey(hKey); | |
415 | ||
416 | out: | |
61df91b3 | 417 | qga_debug_end; |
b39297ae TS |
418 | if (ret != ERROR_SUCCESS) { |
419 | /* As we cannot printf within DllRegisterServer(), show a dialog. */ | |
420 | errmsg_dialog(ret, "Cannot add registry", key); | |
421 | return FALSE; | |
422 | } | |
423 | return TRUE; | |
424 | } | |
425 | ||
426 | /* Register this dll as a VSS provider */ | |
427 | STDAPI DllRegisterServer(void) | |
428 | { | |
61df91b3 KK |
429 | qga_debug_begin; |
430 | ||
b39297ae TS |
431 | COMInitializer initializer; |
432 | COMPointer<IVssAdmin> pVssAdmin; | |
433 | HRESULT hr = E_FAIL; | |
434 | char dllPath[MAX_PATH]; | |
435 | char key[256]; | |
436 | ||
437 | if (!g_hinstDll) { | |
438 | errmsg_dialog(hr, "Module instance is not available"); | |
439 | goto out; | |
440 | } | |
441 | ||
01dc0651 | 442 | /* Add this module to registry */ |
b39297ae TS |
443 | |
444 | sprintf(key, "CLSID\\%s", g_szClsid); | |
445 | if (!CreateRegistryKey(key, NULL, g_szClsid)) { | |
446 | goto out; | |
447 | } | |
448 | ||
449 | if (!GetModuleFileName(g_hinstDll, dllPath, sizeof(dllPath))) { | |
450 | errmsg_dialog(GetLastError(), "GetModuleFileName failed"); | |
451 | goto out; | |
452 | } | |
453 | ||
454 | sprintf(key, "CLSID\\%s\\InprocServer32", g_szClsid); | |
455 | if (!CreateRegistryKey(key, NULL, dllPath)) { | |
456 | goto out; | |
457 | } | |
458 | ||
459 | if (!CreateRegistryKey(key, "ThreadingModel", "Apartment")) { | |
460 | goto out; | |
461 | } | |
462 | ||
463 | sprintf(key, "CLSID\\%s\\ProgID", g_szClsid); | |
464 | if (!CreateRegistryKey(key, NULL, g_szProgid)) { | |
465 | goto out; | |
466 | } | |
467 | ||
468 | if (!CreateRegistryKey(g_szProgid, NULL, QGA_PROVIDER_NAME)) { | |
469 | goto out; | |
470 | } | |
471 | ||
472 | sprintf(key, "%s\\CLSID", g_szProgid); | |
473 | if (!CreateRegistryKey(key, NULL, g_szClsid)) { | |
474 | goto out; | |
475 | } | |
476 | ||
477 | hr = CoCreateInstance(CLSID_VSSCoordinator, NULL, CLSCTX_ALL, | |
478 | IID_IVssAdmin, (void **)pVssAdmin.replace()); | |
479 | if (FAILED(hr)) { | |
480 | errmsg_dialog(hr, "CoCreateInstance(VSSCoordinator) failed"); | |
481 | goto out; | |
482 | } | |
483 | ||
484 | hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider, | |
485 | const_cast<WCHAR*>(QGA_PROVIDER_LNAME), | |
486 | VSS_PROV_SOFTWARE, | |
487 | const_cast<WCHAR*>(QGA_PROVIDER_VERSION), | |
488 | g_gProviderVersion); | |
b2413df8 SJ |
489 | if (hr == (long int) VSS_E_PROVIDER_ALREADY_REGISTERED) { |
490 | DllUnregisterServer(); | |
491 | hr = pVssAdmin->RegisterProvider(g_gProviderId, CLSID_QGAVSSProvider, | |
492 | const_cast<WCHAR * > | |
493 | (QGA_PROVIDER_LNAME), | |
494 | VSS_PROV_SOFTWARE, | |
495 | const_cast<WCHAR * > | |
496 | (QGA_PROVIDER_VERSION), | |
497 | g_gProviderVersion); | |
498 | } | |
499 | ||
b39297ae TS |
500 | if (FAILED(hr)) { |
501 | errmsg_dialog(hr, "RegisterProvider failed"); | |
502 | } | |
503 | ||
504 | out: | |
505 | if (FAILED(hr)) { | |
506 | DllUnregisterServer(); | |
507 | } | |
508 | ||
61df91b3 | 509 | qga_debug_end; |
b39297ae TS |
510 | return hr; |
511 | } | |
512 | ||
513 | /* Unregister this VSS hardware provider from the system */ | |
514 | STDAPI DllUnregisterServer(void) | |
515 | { | |
61df91b3 KK |
516 | qga_debug_begin; |
517 | ||
b39297ae TS |
518 | TCHAR key[256]; |
519 | COMInitializer initializer; | |
520 | COMPointer<IVssAdmin> pVssAdmin; | |
521 | ||
522 | HRESULT hr = CoCreateInstance(CLSID_VSSCoordinator, | |
523 | NULL, CLSCTX_ALL, IID_IVssAdmin, | |
524 | (void **)pVssAdmin.replace()); | |
525 | if (SUCCEEDED(hr)) { | |
526 | hr = pVssAdmin->UnregisterProvider(g_gProviderId); | |
527 | } else { | |
528 | errmsg(hr, "CoCreateInstance(VSSCoordinator) failed"); | |
529 | } | |
530 | ||
531 | sprintf(key, "CLSID\\%s", g_szClsid); | |
532 | SHDeleteKey(HKEY_CLASSES_ROOT, key); | |
533 | SHDeleteKey(HKEY_CLASSES_ROOT, g_szProgid); | |
534 | ||
61df91b3 | 535 | qga_debug_end; |
b39297ae TS |
536 | return S_OK; /* Uninstall should never fail */ |
537 | } | |
538 | ||
539 | ||
540 | /* Support function to convert ASCII string into BSTR (used in _bstr_t) */ | |
541 | namespace _com_util | |
542 | { | |
543 | BSTR WINAPI ConvertStringToBSTR(const char *ascii) { | |
544 | int len = strlen(ascii); | |
545 | BSTR bstr = SysAllocStringLen(NULL, len); | |
546 | ||
547 | if (!bstr) { | |
548 | return NULL; | |
549 | } | |
550 | ||
551 | if (mbstowcs(bstr, ascii, len) == (size_t)-1) { | |
2f84cf69 | 552 | qga_debug("Failed to convert string '%s' into BSTR", ascii); |
b39297ae TS |
553 | bstr[0] = 0; |
554 | } | |
555 | return bstr; | |
556 | } | |
557 | } | |
f342cc93 | 558 | |
917ebcb1 | 559 | /* Stop QGA VSS provider service using Winsvc API */ |
f342cc93 SJ |
560 | STDAPI StopService(void) |
561 | { | |
61df91b3 KK |
562 | qga_debug_begin; |
563 | ||
0fcd574b | 564 | HRESULT hr = S_OK; |
917ebcb1 BS |
565 | SC_HANDLE manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); |
566 | SC_HANDLE service = NULL; | |
f342cc93 | 567 | |
917ebcb1 BS |
568 | if (!manager) { |
569 | errmsg(E_FAIL, "Failed to open service manager"); | |
570 | hr = E_FAIL; | |
571 | goto out; | |
572 | } | |
573 | service = OpenService(manager, QGA_PROVIDER_NAME, SC_MANAGER_ALL_ACCESS); | |
f342cc93 | 574 | |
917ebcb1 BS |
575 | if (!service) { |
576 | errmsg(E_FAIL, "Failed to open service"); | |
577 | hr = E_FAIL; | |
578 | goto out; | |
579 | } | |
580 | if (!(ControlService(service, SERVICE_CONTROL_STOP, NULL))) { | |
581 | errmsg(E_FAIL, "Failed to stop service"); | |
582 | hr = E_FAIL; | |
f342cc93 SJ |
583 | } |
584 | ||
585 | out: | |
917ebcb1 BS |
586 | CloseServiceHandle(service); |
587 | CloseServiceHandle(manager); | |
61df91b3 | 588 | qga_debug_end; |
f342cc93 SJ |
589 | return hr; |
590 | } |