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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
/** @file dk4isadm.h Check whether process runs with
admin privileges.
*/
#ifdef __cplusplus
extern "C" {
#endif
/** Check whether the current process runs with administrative privileges.
@return 1 if administrative, 0 if user process, -1 if failed to check.
*/
int
dk4isadmin(void);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4conf.h"
#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define WINDOWS_H_INCLUDED 1
#endif
#endif
#include "dk4types.h"
#if DK4_HAVE_UNISTD_H
#ifndef UNISTD_H_INCLUDED
#include <unistd.h>
#define UNISTD_H_INCLUDED 1
#endif
#endif
#if DK4_HAVE_SYS_TYPES_H
#ifndef SYS_TYPES_H_INCLUDED
#include <sys/types.h>
#define SYS_TYPES_H_INCLUDED 1
#endif
#endif
#include "dk4isadm.h"
$!trace-include
int
dk4isadmin(void)
{
#if DK4_ON_WINDOWS
PSID pAdmGroup = NULL;
SID_IDENTIFIER_AUTHORITY ntAuthority = SECURITY_NT_AUTHORITY;
BOOL bres = FALSE;
BOOL isadm = FALSE;
#endif
int back = 0;
#if DK4_ON_WINDOWS
back = -1;
bres = AllocateAndInitializeSid(
&ntAuthority, 2,
SECURITY_BUILTIN_DOMAIN_RID, /* sub-authority 0 */
DOMAIN_ALIAS_RID_ADMINS, /* sub-authority 1 */
(DWORD)0, /* sub-authority 2 */
(DWORD)0, /* sub-authority 3 */
(DWORD)0, /* sub-authority 4 */
(DWORD)0, /* sub-authority 5 */
(DWORD)0, /* sub-authority 6 */
(DWORD)0, /* sub-authority 7 */
&pAdmGroup
);
if (bres) {
if (CheckTokenMembership(NULL, pAdmGroup, &isadm)) {
if (isadm) {
back = 1;
} else {
back = 0;
}
}
}
if (NULL != pAdmGroup) {
FreeSid(pAdmGroup);
}
#else
if (0 == geteuid()) {
back = 1;
}
#endif
return back;
}
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