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[NETID] Disable the 'Network ID' and 'Change' buttons and show the admin note when the current user is not an administrator

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This commit is contained in:
Eric Kohl 2020-05-01 22:34:01 +02:00
parent 226878563f
commit 8c4b0c9142
1 changed files with 72 additions and 0 deletions
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72
dll/win32/netid/netid.c
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@ -159,6 +159,68 @@ GetComputerNames(
return TRUE;
}
static BOOL
IsUserAdmin(VOID)
{
SID_IDENTIFIER_AUTHORITY Authority = {SECURITY_NT_AUTHORITY};
PSID pAdminsSid = NULL;
HANDLE hToken = NULL;
PTOKEN_GROUPS pGroups = NULL;
BOOL bIsAdmin = FALSE;
DWORD dwSize, i;
if (!AllocateAndInitializeSid(&Authority, 2, SECURITY_BUILTIN_DOMAIN_RID,
DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0,
&pAdminsSid))
return FALSE;
if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_QUERY,
&hToken))
goto done;
dwSize = 0;
GetTokenInformation(hToken,
TokenGroups,
NULL,
0,
&dwSize);
if (dwSize == 0)
goto done;
pGroups = HeapAlloc(GetProcessHeap(), 0, dwSize);
if (pGroups == NULL)
goto done;
if (!GetTokenInformation(hToken,
TokenGroups,
pGroups,
dwSize,
&dwSize))
goto done;
for (i = 0; i < pGroups->GroupCount; i++)
{
if (EqualSid(pGroups->Groups[i].Sid, pAdminsSid))
{
bIsAdmin = TRUE;
break;
}
}
done:
if (pGroups != NULL)
HeapFree(GetProcessHeap(), 0, pGroups);
if (hToken != NULL)
CloseHandle(hToken);
if (pAdminsSid != NULL)
FreeSid(pAdminsSid);
return bIsAdmin;
}
static
BOOL
IsValidDomainName(
@ -611,6 +673,16 @@ NetIDPage_OnInitDialog(
LoadStringW(hDllInstance, (pNetIdData->JoinStatus == NetSetupDomainName)? 6 : 5, szBuffer, ARRAYSIZE(szBuffer));
SetDlgItemText(hwndDlg, IDC_WORKGROUPDOMAIN, szBuffer);
SetDlgItemText(hwndDlg, IDC_WORKGROUPDOMAIN_NAME, pNetIdData->JoinName);
/* Show the administrator note and disable controls when the user is not an administator */
if (!IsUserAdmin())
{
LoadStringW(hDllInstance, 1021, szBuffer, ARRAYSIZE(szBuffer));
SetDlgItemText(hwndDlg, IDC_MESSAGETEXT, szBuffer);
EnableWindow(GetDlgItem(hwndDlg, IDC_NETWORK_ID), FALSE);
EnableWindow(GetDlgItem(hwndDlg, IDC_NETWORK_PROPERTY), FALSE);
}
}
static