5 extern imports_t imports;
7 /* Open Policy object. */
8 int open_lsa_policy(LSA_HANDLE *policy) {
9 LSA_OBJECT_ATTRIBUTES attributes;
10 ZeroMemory(&attributes, sizeof(attributes));
12 NTSTATUS status = LsaOpenPolicy(0, &attributes, POLICY_ALL_ACCESS, policy);
14 print_message(stderr, NSSM_MESSAGE_LSAOPENPOLICY_FAILED, error_string(LsaNtStatusToWinError(status)));
21 /* Look up SID for an account. */
22 int username_sid(const TCHAR *username, SID **sid, LSA_HANDLE *policy) {
26 if (open_lsa_policy(policy)) return 1;
29 LSA_UNICODE_STRING lsa_username;
31 lsa_username.Buffer = (wchar_t *) username;
32 lsa_username.Length = (unsigned short) _tcslen(username) * sizeof(TCHAR);
33 lsa_username.MaximumLength = lsa_username.Length + sizeof(TCHAR);
36 mbstowcs_s(&buflen, NULL, 0, username, _TRUNCATE);
37 lsa_username.MaximumLength = (unsigned short) buflen * sizeof(wchar_t);
38 lsa_username.Length = lsa_username.MaximumLength - sizeof(wchar_t);
39 lsa_username.Buffer = (wchar_t *) HeapAlloc(GetProcessHeap(), 0, lsa_username.MaximumLength);
40 if (lsa_username.Buffer) mbstowcs_s(&buflen, lsa_username.Buffer, lsa_username.MaximumLength, username, _TRUNCATE);
42 if (policy == &handle) LsaClose(handle);
43 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("LSA_UNICODE_STRING"), _T("username_sid()"));
48 LSA_REFERENCED_DOMAIN_LIST *translated_domains;
49 LSA_TRANSLATED_SID *translated_sid;
50 NTSTATUS status = LsaLookupNames(*policy, 1, &lsa_username, &translated_domains, &translated_sid);
52 HeapFree(GetProcessHeap(), 0, lsa_username.Buffer);
54 if (policy == &handle) LsaClose(handle);
56 LsaFreeMemory(translated_domains);
57 LsaFreeMemory(translated_sid);
58 print_message(stderr, NSSM_MESSAGE_LSALOOKUPNAMES_FAILED, username, error_string(LsaNtStatusToWinError(status)));
62 if (translated_sid->Use != SidTypeUser && translated_sid->Use != SidTypeWellKnownGroup) {
63 LsaFreeMemory(translated_domains);
64 LsaFreeMemory(translated_sid);
65 print_message(stderr, NSSM_GUI_INVALID_USERNAME, username);
69 LSA_TRUST_INFORMATION *trust = &translated_domains->Domains[translated_sid->DomainIndex];
70 if (! trust || ! IsValidSid(trust->Sid)) {
71 LsaFreeMemory(translated_domains);
72 LsaFreeMemory(translated_sid);
73 print_message(stderr, NSSM_GUI_INVALID_USERNAME, username);
77 /* GetSidSubAuthority*() return pointers! */
78 unsigned char *n = GetSidSubAuthorityCount(trust->Sid);
80 /* Convert translated SID to SID. */
81 *sid = (SID *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, GetSidLengthRequired(*n + 1));
83 LsaFreeMemory(translated_domains);
84 LsaFreeMemory(translated_sid);
85 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("SID"), _T("grant_logon_as_service"));
90 if (! InitializeSid(*sid, GetSidIdentifierAuthority(trust->Sid), *n + 1)) {
91 error = GetLastError();
92 HeapFree(GetProcessHeap(), 0, *sid);
93 LsaFreeMemory(translated_domains);
94 LsaFreeMemory(translated_sid);
95 print_message(stderr, NSSM_MESSAGE_INITIALIZESID_FAILED, username, error_string(error));
99 for (unsigned char i = 0; i <= *n; i++) {
100 unsigned long *sub = GetSidSubAuthority(*sid, i);
101 if (i < *n) *sub = *GetSidSubAuthority(trust->Sid, i);
102 else *sub = translated_sid->RelativeId;
106 if (translated_sid->Use == SidTypeWellKnownGroup && requires_password(*sid)) {
107 print_message(stderr, NSSM_GUI_INVALID_USERNAME, username);
111 LsaFreeMemory(translated_domains);
112 LsaFreeMemory(translated_sid);
117 int username_sid(const TCHAR *username, SID **sid) {
118 return username_sid(username, sid, 0);
121 /* Do two usernames map to the same SID? */
122 int username_equiv(const TCHAR *a, const TCHAR *b) {
124 if (username_sid(a, &sid_a)) return 0;
126 if (username_sid(b, &sid_b)) {
132 if (EqualSid(sid_a, sid_b)) ret = 1;
140 /* Does the username represent the LocalSystem account? */
141 int is_localsystem(const TCHAR *username) {
142 if (str_equiv(username, NSSM_LOCALSYSTEM_ACCOUNT)) return 1;
143 if (! imports.IsWellKnownSid) return 0;
146 if (username_sid(username, &sid)) return 0;
149 if (imports.IsWellKnownSid(sid, WinLocalSystemSid)) ret = 1;
157 Find the canonical name for a well-known account name.
158 MUST ONLY BE USED for well-known account names.
159 Must call LocalFree() on result.
161 TCHAR *canonical_username(const TCHAR *username) {
166 if (is_localsystem(username)) {
167 len = (_tcslen(NSSM_LOCALSYSTEM_ACCOUNT) + 1) * sizeof(TCHAR);
168 canon = (TCHAR *) LocalAlloc(LPTR, len);
170 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, NSSM_LOCALSYSTEM_ACCOUNT, _T("canonical_username"));
173 memmove(canon, NSSM_LOCALSYSTEM_ACCOUNT, len);
174 _tprintf(_T("it's localsystem = %s!\n"), canon);
178 if (! imports.CreateWellKnownSid) return 0;
180 if (username_sid(username, &user_sid)) return 0;
183 LsaLookupSids will return the canonical username but the result won't
184 include the NT Authority part. Thus we must look that up as well.
186 unsigned long ntsidsize = SECURITY_MAX_SID_SIZE;
187 SID *ntauth_sid = (SID *) HeapAlloc(GetProcessHeap(), 0, ntsidsize);
189 HeapFree(GetProcessHeap(), 0, user_sid);
190 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("NT Authority"), _T("canonical_username"));
194 if (! imports.CreateWellKnownSid(WinNtAuthoritySid, NULL, ntauth_sid, &ntsidsize)) {
195 HeapFree(GetProcessHeap(), 0, ntauth_sid);
196 print_message(stderr, NSSM_MESSAGE_CREATEWELLKNOWNSID_FAILED, _T("WinNtAuthoritySid"));
201 if (open_lsa_policy(&policy)) return 0;
203 LSA_REFERENCED_DOMAIN_LIST *translated_domains;
204 LSA_TRANSLATED_NAME *translated_names;
207 PSID *sids = (PSID *) HeapAlloc(GetProcessHeap(), 0, n * sizeof(PSID));
209 sids[1] = ntauth_sid;
211 NTSTATUS status = LsaLookupSids(policy, n, (PSID *) sids, &translated_domains, &translated_names);
212 HeapFree(GetProcessHeap(), 0, user_sid);
213 HeapFree(GetProcessHeap(), 0, ntauth_sid);
214 HeapFree(GetProcessHeap(), 0, sids);
217 print_message(stderr, NSSM_MESSAGE_LSALOOKUPSIDS_FAILED);
221 /* Look up the account name. */
222 LSA_TRANSLATED_NAME *translated_name = &(translated_names[0]);
223 if (translated_name->Use != SidTypeWellKnownGroup) {
224 print_message(stderr, NSSM_GUI_INVALID_USERNAME);
225 LsaFreeMemory(translated_domains);
226 LsaFreeMemory(translated_names);
230 LSA_UNICODE_STRING *lsa_group = &translated_name->Name;
232 /* Look up NT Authority. */
233 translated_name = &(translated_names[1]);
234 if (translated_name->Use != SidTypeDomain) {
235 print_message(stderr, NSSM_GUI_INVALID_USERNAME);
236 LsaFreeMemory(translated_domains);
237 LsaFreeMemory(translated_names);
241 /* In theory these pointers should all be valid if we got this far... */
242 LSA_TRUST_INFORMATION *trust = &translated_domains->Domains[translated_name->DomainIndex];
243 LSA_UNICODE_STRING *lsa_domain = &trust->Name;
245 TCHAR *domain, *group;
246 unsigned long lsa_domain_len = lsa_domain->Length;
247 unsigned long lsa_group_len = lsa_group->Length;
248 len = lsa_domain_len + lsa_group_len + 2;
251 domain = lsa_domain->Buffer;
252 group = lsa_group->Buffer;
256 wcstombs_s(&buflen, NULL, 0, lsa_domain->Buffer, _TRUNCATE);
257 domain = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, buflen);
259 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("domain"), _T("canonical_username"));
260 LsaFreeMemory(translated_domains);
261 LsaFreeMemory(translated_names);
264 wcstombs_s(&buflen, (char *) domain, buflen, lsa_domain->Buffer, _TRUNCATE);
266 wcstombs_s(&buflen, NULL, 0, lsa_group->Buffer, _TRUNCATE);
267 group = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, buflen);
269 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("group"), _T("canonical_username"));
270 LsaFreeMemory(translated_domains);
271 LsaFreeMemory(translated_names);
274 wcstombs_s(&buflen, (char *) group, buflen, lsa_group->Buffer, _TRUNCATE);
277 canon = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, len * sizeof(TCHAR));
279 LsaFreeMemory(translated_domains);
280 LsaFreeMemory(translated_names);
281 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("canon"), _T("canonical_username"));
285 _sntprintf_s(canon, len, _TRUNCATE, _T("%s\\%s"), domain, group);
288 HeapFree(GetProcessHeap(), 0, domain);
289 HeapFree(GetProcessHeap(), 0, group);
292 LsaFreeMemory(translated_domains);
293 LsaFreeMemory(translated_names);
298 /* Does the SID type require a password? */
299 int requires_password(SID *sid) {
300 if (! imports.IsWellKnownSid) return -1;
301 if (imports.IsWellKnownSid(sid, WinLocalSystemSid)) return 0;
302 if (imports.IsWellKnownSid(sid, WinLocalServiceSid)) return 0;
303 if (imports.IsWellKnownSid(sid, WinNetworkServiceSid)) return 0;;
307 /* Does the username require a password? */
308 int requires_password(const TCHAR *username) {
309 if (str_equiv(username, NSSM_LOCALSYSTEM_ACCOUNT)) return 0;
312 int r = username_sid(username, &sid);
313 if (username_sid(username, &sid)) return 0;
316 ret = requires_password(sid);
323 int grant_logon_as_service(const TCHAR *username) {
324 if (! username) return 0;
325 if (! requires_password(username)) return 0;
327 /* Open Policy object. */
328 LSA_OBJECT_ATTRIBUTES attributes;
329 ZeroMemory(&attributes, sizeof(attributes));
334 if (open_lsa_policy(&policy)) return 1;
336 /* Look up SID for the account. */
338 if (username_sid(username, &sid, &policy)) {
343 /* Check if the SID has the "Log on as a service" right. */
344 LSA_UNICODE_STRING lsa_right;
345 lsa_right.Buffer = NSSM_LOGON_AS_SERVICE_RIGHT;
346 lsa_right.Length = (unsigned short) wcslen(lsa_right.Buffer) * sizeof(wchar_t);
347 lsa_right.MaximumLength = lsa_right.Length + sizeof(wchar_t);
349 LSA_UNICODE_STRING *rights;
350 unsigned long count = ~0;
351 status = LsaEnumerateAccountRights(policy, sid, &rights, &count);
354 If the account has no rights set LsaEnumerateAccountRights() will return
355 STATUS_OBJECT_NAME_NOT_FOUND and set count to 0.
357 unsigned long error = LsaNtStatusToWinError(status);
358 if (error != ERROR_FILE_NOT_FOUND) {
361 print_message(stderr, NSSM_MESSAGE_LSAENUMERATEACCOUNTRIGHTS_FAILED, username, error_string(error));
366 for (unsigned long i = 0; i < count; i++) {
367 if (rights[i].Length != lsa_right.Length) continue;
368 if (_wcsnicmp(rights[i].Buffer, lsa_right.Buffer, lsa_right.MaximumLength)) continue;
369 /* The SID has the right. */
371 LsaFreeMemory(rights);
375 LsaFreeMemory(rights);
378 status = LsaAddAccountRights(policy, sid, &lsa_right, 1);
382 print_message(stderr, NSSM_MESSAGE_LSAADDACCOUNTRIGHTS_FAILED, error_string(LsaNtStatusToWinError(status)));
386 print_message(stdout, NSSM_MESSAGE_GRANTED_LOGON_AS_SERVICE, username);