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/*
* Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/*
System related functions. Original code moved in here from
psutil/_psutil_windows.c in 2023. For reference, here's the GIT blame
history before the move:
* boot_time(): https://github.com/giampaolo/psutil/blame/efd7ed3/psutil/_psutil_windows.c#L51-L60
* users(): https://github.com/giampaolo/psutil/blame/efd7ed3/psutil/_psutil_windows.c#L1103-L1244
*/
#include <Python.h>
#include <windows.h>
#include "ntextapi.h"
#include "../../_psutil_common.h"
// Return a Python float representing the system uptime expressed in
// seconds since the epoch.
PyObject *
psutil_boot_time(PyObject *self, PyObject *args) {
ULONGLONG upTime;
FILETIME fileTime;
GetSystemTimeAsFileTime(&fileTime);
// Number of milliseconds that have elapsed since the system was started.
upTime = GetTickCount64() / 1000ull;
return Py_BuildValue("d", psutil_FiletimeToUnixTime(fileTime) - upTime);
}
PyObject *
psutil_users(PyObject *self, PyObject *args) {
HANDLE hServer = WTS_CURRENT_SERVER_HANDLE;
LPWSTR buffer_user = NULL;
LPWSTR buffer_addr = NULL;
LPWSTR buffer_info = NULL;
PWTS_SESSION_INFOW sessions = NULL;
DWORD count;
DWORD i;
DWORD sessionId;
DWORD bytes;
PWTS_CLIENT_ADDRESS address;
char address_str[50];
PWTSINFOW wts_info;
PyObject *py_tuple = NULL;
PyObject *py_address = NULL;
PyObject *py_username = NULL;
PyObject *py_retlist = PyList_New(0);
if (py_retlist == NULL)
return NULL;
if (WTSEnumerateSessionsW == NULL ||
WTSQuerySessionInformationW == NULL ||
WTSFreeMemory == NULL) {
// If we don't run in an environment that is a Remote Desktop Services environment
// the Wtsapi32 proc might not be present.
// https://docs.microsoft.com/en-us/windows/win32/termserv/run-time-linking-to-wtsapi32-dll
return py_retlist;
}
if (WTSEnumerateSessionsW(hServer, 0, 1, &sessions, &count) == 0) {
if (ERROR_CALL_NOT_IMPLEMENTED == GetLastError()) {
// On Windows Nano server, the Wtsapi32 API can be present, but return WinError 120.
return py_retlist;
}
psutil_PyErr_SetFromOSErrnoWithSyscall("WTSEnumerateSessionsW");
goto error;
}
for (i = 0; i < count; i++) {
py_address = NULL;
py_tuple = NULL;
sessionId = sessions[i].SessionId;
if (buffer_user != NULL)
WTSFreeMemory(buffer_user);
if (buffer_addr != NULL)
WTSFreeMemory(buffer_addr);
if (buffer_info != NULL)
WTSFreeMemory(buffer_info);
buffer_user = NULL;
buffer_addr = NULL;
buffer_info = NULL;
// username
bytes = 0;
if (WTSQuerySessionInformationW(hServer, sessionId, WTSUserName,
&buffer_user, &bytes) == 0) {
psutil_PyErr_SetFromOSErrnoWithSyscall(
"WTSQuerySessionInformationW"
);
goto error;
}
if (bytes <= 2)
continue;
// address
bytes = 0;
if (WTSQuerySessionInformationW(hServer, sessionId, WTSClientAddress,
&buffer_addr, &bytes) == 0) {
psutil_PyErr_SetFromOSErrnoWithSyscall(
"WTSQuerySessionInformationW"
);
goto error;
}
address = (PWTS_CLIENT_ADDRESS)buffer_addr;
if (address->AddressFamily == 2) { // AF_INET == 2
sprintf_s(address_str,
_countof(address_str),
"%u.%u.%u.%u",
// The IP address is offset by two bytes from the start of the Address member of the WTS_CLIENT_ADDRESS structure.
address->Address[2],
address->Address[3],
address->Address[4],
address->Address[5]);
py_address = Py_BuildValue("s", address_str);
if (!py_address)
goto error;
}
else {
Py_INCREF(Py_None);
py_address = Py_None;
}
// login time
bytes = 0;
if (WTSQuerySessionInformationW(hServer, sessionId, WTSSessionInfo,
&buffer_info, &bytes) == 0) {
psutil_PyErr_SetFromOSErrnoWithSyscall(
"WTSQuerySessionInformationW"
);
goto error;
}
wts_info = (PWTSINFOW)buffer_info;
py_username = PyUnicode_FromWideChar(buffer_user, wcslen(buffer_user));
if (py_username == NULL)
goto error;
py_tuple = Py_BuildValue(
"OOd",
py_username,
py_address,
psutil_LargeIntegerToUnixTime(wts_info->ConnectTime)
);
if (!py_tuple)
goto error;
if (PyList_Append(py_retlist, py_tuple))
goto error;
Py_CLEAR(py_username);
Py_CLEAR(py_address);
Py_CLEAR(py_tuple);
}
WTSFreeMemory(sessions);
WTSFreeMemory(buffer_user);
WTSFreeMemory(buffer_addr);
WTSFreeMemory(buffer_info);
return py_retlist;
error:
Py_XDECREF(py_username);
Py_XDECREF(py_tuple);
Py_XDECREF(py_address);
Py_DECREF(py_retlist);
if (sessions != NULL)
WTSFreeMemory(sessions);
if (buffer_user != NULL)
WTSFreeMemory(buffer_user);
if (buffer_addr != NULL)
WTSFreeMemory(buffer_addr);
if (buffer_info != NULL)
WTSFreeMemory(buffer_info);
return NULL;
}
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