5 #ifndef STATUS_SUCCESS
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6 #define STATUS_SUCCESS ERROR_SUCCESS
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9 extern imports_t imports;
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11 /* Open Policy object. */
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12 int open_lsa_policy(LSA_HANDLE *policy) {
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13 LSA_OBJECT_ATTRIBUTES attributes;
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14 ZeroMemory(&attributes, sizeof(attributes));
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16 NTSTATUS status = LsaOpenPolicy(0, &attributes, POLICY_ALL_ACCESS, policy);
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17 if (status != STATUS_SUCCESS) {
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18 print_message(stderr, NSSM_MESSAGE_LSAOPENPOLICY_FAILED, error_string(LsaNtStatusToWinError(status)));
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25 /* Look up SID for an account. */
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26 int username_sid(const TCHAR *username, SID **sid, LSA_HANDLE *policy) {
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30 if (open_lsa_policy(policy)) return 1;
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34 LsaLookupNames() can't look up .\username but can look up
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35 %COMPUTERNAME%\username. ChangeServiceConfig() writes .\username to the
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36 registry when %COMPUTERNAME%\username is a passed as a parameter. We
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37 need to preserve .\username when calling ChangeServiceConfig() without
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38 changing the username, but expand to %COMPUTERNAME%\username when calling
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42 unsigned long expandedlen;
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43 if (_tcsnicmp(_T(".\\"), username, 2)) {
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44 expandedlen = (unsigned long) (_tcslen(username) + 1) * sizeof(TCHAR);
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45 expanded = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, expandedlen);
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47 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("expanded"), _T("username_sid"));
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48 if (policy == &handle) LsaClose(handle);
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51 memmove(expanded, username, expandedlen);
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54 TCHAR computername[MAX_COMPUTERNAME_LENGTH + 1];
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55 expandedlen = _countof(computername);
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56 GetComputerName(computername, &expandedlen);
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57 expandedlen += (unsigned long) _tcslen(username);
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59 expanded = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, expandedlen * sizeof(TCHAR));
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61 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("expanded"), _T("username_sid"));
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62 if (policy == &handle) LsaClose(handle);
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65 _sntprintf_s(expanded, expandedlen, _TRUNCATE, _T("%s\\%s"), computername, username + 2);
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68 LSA_UNICODE_STRING lsa_username;
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70 lsa_username.Buffer = (wchar_t *) expanded;
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71 lsa_username.Length = (unsigned short) _tcslen(expanded) * sizeof(TCHAR);
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72 lsa_username.MaximumLength = lsa_username.Length + sizeof(TCHAR);
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75 mbstowcs_s(&buflen, NULL, 0, expanded, _TRUNCATE);
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76 lsa_username.MaximumLength = (unsigned short) buflen * sizeof(wchar_t);
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77 lsa_username.Length = lsa_username.MaximumLength - sizeof(wchar_t);
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78 lsa_username.Buffer = (wchar_t *) HeapAlloc(GetProcessHeap(), 0, lsa_username.MaximumLength);
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79 if (lsa_username.Buffer) mbstowcs_s(&buflen, lsa_username.Buffer, lsa_username.MaximumLength, expanded, _TRUNCATE);
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81 if (policy == &handle) LsaClose(handle);
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82 HeapFree(GetProcessHeap(), 0, expanded);
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83 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("LSA_UNICODE_STRING"), _T("username_sid()"));
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88 LSA_REFERENCED_DOMAIN_LIST *translated_domains;
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89 LSA_TRANSLATED_SID *translated_sid;
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90 NTSTATUS status = LsaLookupNames(*policy, 1, &lsa_username, &translated_domains, &translated_sid);
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92 HeapFree(GetProcessHeap(), 0, lsa_username.Buffer);
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94 HeapFree(GetProcessHeap(), 0, expanded);
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95 if (policy == &handle) LsaClose(handle);
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96 if (status != STATUS_SUCCESS) {
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97 LsaFreeMemory(translated_domains);
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98 LsaFreeMemory(translated_sid);
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99 print_message(stderr, NSSM_MESSAGE_LSALOOKUPNAMES_FAILED, username, error_string(LsaNtStatusToWinError(status)));
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103 if (translated_sid->Use != SidTypeUser && translated_sid->Use != SidTypeWellKnownGroup) {
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104 LsaFreeMemory(translated_domains);
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105 LsaFreeMemory(translated_sid);
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106 print_message(stderr, NSSM_GUI_INVALID_USERNAME, username);
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110 LSA_TRUST_INFORMATION *trust = &translated_domains->Domains[translated_sid->DomainIndex];
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111 if (! trust || ! IsValidSid(trust->Sid)) {
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112 LsaFreeMemory(translated_domains);
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113 LsaFreeMemory(translated_sid);
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114 print_message(stderr, NSSM_GUI_INVALID_USERNAME, username);
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118 /* GetSidSubAuthority*() return pointers! */
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119 unsigned char *n = GetSidSubAuthorityCount(trust->Sid);
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121 /* Convert translated SID to SID. */
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122 *sid = (SID *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, GetSidLengthRequired(*n + 1));
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124 LsaFreeMemory(translated_domains);
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125 LsaFreeMemory(translated_sid);
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126 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("SID"), _T("username_sid"));
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130 unsigned long error;
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131 if (! InitializeSid(*sid, GetSidIdentifierAuthority(trust->Sid), *n + 1)) {
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132 error = GetLastError();
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133 HeapFree(GetProcessHeap(), 0, *sid);
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134 LsaFreeMemory(translated_domains);
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135 LsaFreeMemory(translated_sid);
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136 print_message(stderr, NSSM_MESSAGE_INITIALIZESID_FAILED, username, error_string(error));
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140 for (unsigned char i = 0; i <= *n; i++) {
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141 unsigned long *sub = GetSidSubAuthority(*sid, i);
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142 if (i < *n) *sub = *GetSidSubAuthority(trust->Sid, i);
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143 else *sub = translated_sid->RelativeId;
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147 if (translated_sid->Use == SidTypeWellKnownGroup && ! well_known_sid(*sid)) {
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148 print_message(stderr, NSSM_GUI_INVALID_USERNAME, username);
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152 LsaFreeMemory(translated_domains);
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153 LsaFreeMemory(translated_sid);
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158 int username_sid(const TCHAR *username, SID **sid) {
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159 return username_sid(username, sid, 0);
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162 int canonicalise_username(const TCHAR *username, TCHAR **canon) {
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164 if (open_lsa_policy(&policy)) return 1;
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167 if (username_sid(username, &sid, &policy)) return 2;
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168 PSID sids = { sid };
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170 LSA_REFERENCED_DOMAIN_LIST *translated_domains;
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171 LSA_TRANSLATED_NAME *translated_name;
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172 NTSTATUS status = LsaLookupSids(policy, 1, &sids, &translated_domains, &translated_name);
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173 if (status != STATUS_SUCCESS) {
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174 LsaFreeMemory(translated_domains);
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175 LsaFreeMemory(translated_name);
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176 print_message(stderr, NSSM_MESSAGE_LSALOOKUPSIDS_FAILED, error_string(LsaNtStatusToWinError(status)));
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180 LSA_TRUST_INFORMATION *trust = &translated_domains->Domains[translated_name->DomainIndex];
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181 LSA_UNICODE_STRING lsa_canon;
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182 lsa_canon.Length = translated_name->Name.Length + trust->Name.Length + sizeof(wchar_t);
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183 lsa_canon.MaximumLength = lsa_canon.Length + sizeof(wchar_t);
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184 lsa_canon.Buffer = (wchar_t *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, lsa_canon.MaximumLength);
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185 if (! lsa_canon.Buffer) {
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186 LsaFreeMemory(translated_domains);
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187 LsaFreeMemory(translated_name);
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188 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("lsa_canon"), _T("username_sid"));
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192 /* Buffer is wchar_t but Length is in bytes. */
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193 memmove((char *) lsa_canon.Buffer, trust->Name.Buffer, trust->Name.Length);
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194 memmove((char *) lsa_canon.Buffer + trust->Name.Length, L"\\", sizeof(wchar_t));
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195 memmove((char *) lsa_canon.Buffer + trust->Name.Length + sizeof(wchar_t), translated_name->Name.Buffer, translated_name->Name.Length);
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198 *canon = lsa_canon.Buffer;
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201 wcstombs_s(&buflen, NULL, 0, lsa_canon.Buffer, _TRUNCATE);
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202 *canon = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, buflen);
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204 LsaFreeMemory(translated_domains);
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205 LsaFreeMemory(translated_name);
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206 print_message(stderr, NSSM_MESSAGE_OUT_OF_MEMORY, _T("canon"), _T("username_sid"));
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209 wcstombs_s(&buflen, *canon, buflen, lsa_canon.Buffer, _TRUNCATE);
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210 HeapFree(GetProcessHeap(), 0, lsa_canon.Buffer);
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213 LsaFreeMemory(translated_domains);
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214 LsaFreeMemory(translated_name);
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219 /* Do two usernames map to the same SID? */
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220 int username_equiv(const TCHAR *a, const TCHAR *b) {
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221 SID *sid_a, *sid_b;
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222 if (username_sid(a, &sid_a)) return 0;
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224 if (username_sid(b, &sid_b)) {
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230 if (EqualSid(sid_a, sid_b)) ret = 1;
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238 /* Does the username represent the LocalSystem account? */
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239 int is_localsystem(const TCHAR *username) {
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240 if (str_equiv(username, NSSM_LOCALSYSTEM_ACCOUNT)) return 1;
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241 if (! imports.IsWellKnownSid) return 0;
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244 if (username_sid(username, &sid)) return 0;
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247 if (imports.IsWellKnownSid(sid, WinLocalSystemSid)) ret = 1;
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255 Get well-known alias for LocalSystem and friends.
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256 Returns a pointer to a static string. DO NOT try to free it.
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258 const TCHAR *well_known_sid(SID *sid) {
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259 if (! imports.IsWellKnownSid) return 0;
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260 if (imports.IsWellKnownSid(sid, WinLocalSystemSid)) return NSSM_LOCALSYSTEM_ACCOUNT;
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261 if (imports.IsWellKnownSid(sid, WinLocalServiceSid)) return NSSM_LOCALSERVICE_ACCOUNT;
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262 if (imports.IsWellKnownSid(sid, WinNetworkServiceSid)) return NSSM_NETWORKSERVICE_ACCOUNT;
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266 const TCHAR *well_known_username(const TCHAR *username) {
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267 if (! username) return NSSM_LOCALSYSTEM_ACCOUNT;
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268 if (str_equiv(username, NSSM_LOCALSYSTEM_ACCOUNT)) return NSSM_LOCALSYSTEM_ACCOUNT;
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270 if (username_sid(username, &sid)) return 0;
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272 const TCHAR *well_known = well_known_sid(sid);
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278 int grant_logon_as_service(const TCHAR *username) {
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279 if (! username) return 0;
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281 /* Open Policy object. */
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282 LSA_OBJECT_ATTRIBUTES attributes;
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283 ZeroMemory(&attributes, sizeof(attributes));
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288 if (open_lsa_policy(&policy)) return 1;
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290 /* Look up SID for the account. */
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292 if (username_sid(username, &sid, &policy)) {
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298 Shouldn't happen because it should have been checked before callling this function.
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300 if (well_known_sid(sid)) {
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305 /* Check if the SID has the "Log on as a service" right. */
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306 LSA_UNICODE_STRING lsa_right;
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307 lsa_right.Buffer = NSSM_LOGON_AS_SERVICE_RIGHT;
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308 lsa_right.Length = (unsigned short) wcslen(lsa_right.Buffer) * sizeof(wchar_t);
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309 lsa_right.MaximumLength = lsa_right.Length + sizeof(wchar_t);
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311 LSA_UNICODE_STRING *rights;
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312 unsigned long count = ~0;
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313 status = LsaEnumerateAccountRights(policy, sid, &rights, &count);
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314 if (status != STATUS_SUCCESS) {
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316 If the account has no rights set LsaEnumerateAccountRights() will return
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317 STATUS_OBJECT_NAME_NOT_FOUND and set count to 0.
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319 unsigned long error = LsaNtStatusToWinError(status);
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320 if (error != ERROR_FILE_NOT_FOUND) {
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323 print_message(stderr, NSSM_MESSAGE_LSAENUMERATEACCOUNTRIGHTS_FAILED, username, error_string(error));
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328 for (unsigned long i = 0; i < count; i++) {
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329 if (rights[i].Length != lsa_right.Length) continue;
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330 if (_wcsnicmp(rights[i].Buffer, lsa_right.Buffer, lsa_right.MaximumLength)) continue;
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331 /* The SID has the right. */
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333 LsaFreeMemory(rights);
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337 LsaFreeMemory(rights);
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339 /* Add the right. */
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340 status = LsaAddAccountRights(policy, sid, &lsa_right, 1);
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343 if (status != STATUS_SUCCESS) {
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344 print_message(stderr, NSSM_MESSAGE_LSAADDACCOUNTRIGHTS_FAILED, error_string(LsaNtStatusToWinError(status)));
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348 print_message(stdout, NSSM_MESSAGE_GRANTED_LOGON_AS_SERVICE, username);
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