/**
* Copyright (c) 2007, Markus Jevring <markus@jevring.net>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the contributors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
package cu.ftpd.user.userbases.actions;
import cu.ftpd.Connection;
import cu.ftpd.Server;
import cu.ftpd.ServiceManager;
import cu.ftpd.Sort;
import cu.ftpd.filesystem.FileSystem;
import cu.ftpd.logging.Formatter;
import cu.ftpd.user.User;
import cu.ftpd.user.UserPermission;
import cu.ftpd.user.userbases.NoSuchUserException;
import java.util.Set;
/**
* @author Markus Jevring <markus@jevring.net>
* @since 2007-okt-27 : 00:02:29
* @version $Id: Who.java 300 2010-03-09 20:48:19Z jevring $
*/
public class Who extends UserbaseAction {
private static final String lineFormat = "200- %-1s %-16s %-12s %-40s %-1s";
public Who() {
super("who");
}
public void execute(String[] parameterList, Connection connection, User user, FileSystem fs) {
if (user.hasPermission(UserPermission.WHO)) {
boolean raw = "-raw".equalsIgnoreCase(parameterList[parameterList.length - 1]);
Set<Connection> conns = Server.getInstance().getConnections();
// _todo: this lock is useless for some reason. it should point to the same object that locks un the server
// tests show that we probably do hold the lock after all, which makes this NullPointerException that much more difficult to understand
synchronized(conns) {
if (raw) {
connection.respond("200- SITE WHO RAW (username;group;status;speed_in_kbps;idletime;command)");
} else {
connection.respond(createHeader());
connection.respond(String.format(lineFormat, Formatter.getBar(), "User", "Group", "Action", Formatter.getBar()));
connection.respond(Formatter.createLine(200));
}
for (Connection c : Sort.connections(conns)) {
User u = c.getUser();
// not listing users that are not logged in might cause problems if people connect and then are orphaned. the site might look empty
// but people still can't get in
// we will list these connections in xwho (or whatever we'll call it)
// so, the NullPointerException we got here was when the connection was being reconnected automatically, and
// we did a "site who" before there was a User object available, and thus we got a NullpointerException
if (u != null) { // don't list connections where the user hasn't logged in yet
if ((u.isHidden() && !user.hasPermission(UserPermission.SEE_HIDDEN)) || !ServiceManager.getServices().getPermissions().canSee(user, u, c.getCurrentDir())) {
// hide user if user has the property hidden, or the directory in which the user operates is hidden
continue;
}
if (c.isUploading()) {
if (raw) {
connection.respond(u.getUsername() + ";" + u.getPrimaryGroup() + ";uploading;" + c.getCurrentSpeed() + ";" + c.getIdleTime() + ";" + escape(c.getLastCommand()));
} else {
connection.respond(String.format(lineFormat, Formatter.getBar(), u.getUsername(), u.getPrimaryGroup(), c.getLastCommand() + " @ " + Formatter.speedFromKBps(c.getCurrentSpeed()), Formatter.getBar()));
}
} else if (c.isDownloading()) {
if (raw) {
connection.respond(u.getUsername() + ";" + u.getPrimaryGroup() + ";downloading;" + c.getCurrentSpeed() + ";" + c.getIdleTime() + ";" + escape(c.getLastCommand()));
} else {
connection.respond(String.format(lineFormat, Formatter.getBar(), u.getUsername(), u.getPrimaryGroup(), c.getLastCommand() + " @ " + Formatter.speedFromKBps(c.getCurrentSpeed()), Formatter.getBar()));
}
} else {
if (raw) {
connection.respond(u.getUsername() + ";" + u.getPrimaryGroup() + ";idle;" + c.getCurrentSpeed() + ";" + c.getIdleTime() + ";" + escape(c.getLastCommand()));
} else {
connection.respond(String.format(lineFormat, Formatter.getBar(), u.getUsername(), u.getPrimaryGroup(), "idle for " + Formatter.shortDuration(c.getIdleTime()), Formatter.getBar()));
}
}
}
}
if (raw) {
connection.respond("200 SITE WHO RAW");
} else {
connection.respond(Formatter.createFooter(200));
}
}
} else {
connection.respond("531 Permission denied.");
}
}
protected boolean currentUserIsGadminForUser(String username, User user) {
try {
User u = ServiceManager.getServices().getUserbase().getUser(username);
//current user is gadmin for any of the groups the specified user is a member of
for (String gadminGroup : user.getGadminGroups()) { // this is generally a smaller set, so it makes sense to go over that first, since we abort early
if (u.isMemberOfGroup(gadminGroup)) {
return true;
}
}
} catch (NoSuchUserException e) {
// you can't be the gadmin of a user that doesn't exist
}
return false;
}
}