oshi.driver.unix.solaris.Who Maven / Gradle / Ivy
/**
* MIT License
*
* Copyright (c) 2010 - 2020 The OSHI Project Contributors: https://github.com/oshi/oshi/graphs/contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package oshi.driver.unix.solaris;
import static oshi.jna.platform.unix.CLibrary.LOGIN_PROCESS;
import static oshi.jna.platform.unix.CLibrary.USER_PROCESS;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.jna.platform.unix.solaris.SolarisLibc;
import oshi.jna.platform.unix.solaris.SolarisLibc.SolarisUtmpx;
import oshi.software.os.OSSession;
/**
* Utility to query logged in users.
*/
@ThreadSafe
public final class Who {
private static final SolarisLibc LIBC = SolarisLibc.INSTANCE;
private Who() {
}
/**
* Query {@code getutxent} to get logged in users.
*
* @return A list of logged in user sessions
*/
public static synchronized List queryUtxent() {
List whoList = new ArrayList<>();
SolarisUtmpx ut;
// Rewind
LIBC.setutxent();
try {
// Iterate
while ((ut = LIBC.getutxent()) != null) {
if (ut.ut_type == USER_PROCESS || ut.ut_type == LOGIN_PROCESS) {
String user = new String(ut.ut_user, StandardCharsets.US_ASCII).trim();
if (!"LOGIN".equals(user)) {
String device = new String(ut.ut_line, StandardCharsets.US_ASCII).trim();
String host = new String(ut.ut_host, StandardCharsets.US_ASCII).trim();
long loginTime = ut.ut_tv.tv_sec.longValue() * 1000L + ut.ut_tv.tv_usec.longValue() / 1000L;
// Sanity check. If errors, default to who command line
if (user.isEmpty() || device.isEmpty() || loginTime < 0
|| loginTime > System.currentTimeMillis()) {
return oshi.driver.unix.Who.queryWho();
}
whoList.add(new OSSession(user, device, loginTime, host));
}
}
}
} finally {
// Close
LIBC.endutxent();
}
return whoList;
}
}