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/*
* Copyright (C) 2010-2011 David Edmundson.
* Author: David Edmundson <kde@davidedmundson.co.uk>
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at your option) any
* later version. See http://www.gnu.org/copyleft/lgpl.html the full text of the
* license.
*/
#include "QLightDM/UsersModel"
#include <pwd.h>
#include <errno.h>
#include <QtCore/QString>
#include <QtCore/QFileSystemWatcher>
#include <QtCore/QFile>
#include <QtCore/QDir>
#include <QtCore/QSettings>
#include <QtCore/QDebug>
#include <QtGui/QPixmap>
using namespace QLightDM;
class UsersModelPrivate {
public:
QList<User> users;
};
UsersModel::UsersModel(QObject *parent) :
QAbstractListModel(parent),
d (new UsersModelPrivate())
{
//load users on startup and if the password file changes.
QFileSystemWatcher *watcher = new QFileSystemWatcher(this);
watcher->addPath("/etc/passwd"); //FIXME harcoded path
connect(watcher, SIGNAL(fileChanged(QString)), SLOT(loadUsers()));
loadUsers();
}
UsersModel::~UsersModel()
{
delete d;
}
int UsersModel::rowCount(const QModelIndex &parent) const
{
return d->users.count();
}
QVariant UsersModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid()) {
return QVariant();
}
int row = index.row();
switch (role) {
case Qt::DisplayRole:
return d->users[row].displayName();
case Qt::DecorationRole:
return QPixmap(d->users[row].image());
case UsersModel::NameRole:
return d->users[row].name();
case UsersModel::RealNameRole:
return d->users[row].realName();
case UsersModel::LoggedInRole:
return d->users[row].isLoggedIn();
}
return QVariant();
}
QList<User> UsersModel::getUsers()
{
QString file = "/etc/lightdm/users.conf";
qDebug() << "Loading user configuration from " << file;
QSettings *settings = new QSettings(file, QSettings::IniFormat);
int minimumUid = settings->value("UserAccounts/minimum-uid", QVariant(500)).toInt();
QStringList hiddenShells;
if (settings->contains("UserAccounts/hidden-shells"))
hiddenShells = settings->value("UserAccounts/hidden-shells").toString().split(" ");
else
hiddenShells = QStringList() << "/bin/false" << "/usr/sbin/nologin";
QStringList hiddenUsers;
if (settings->contains("UserAccounts/hidden-users"))
hiddenUsers = settings->value("UserAccounts/hidden-users").toString().split(" ");
else
hiddenUsers = QStringList() << "nobody" << "nobody4" << "noaccess";
QList<User> users;
setpwent();
while(TRUE)
{
struct passwd *entry;
QStringList tokens;
QString realName, image;
QFile *imageFile;
int i;
errno = 0;
entry = getpwent();
if(!entry) {
break;
}
/* Ignore system users */
if(entry->pw_uid < minimumUid) {
continue;
}
/* Ignore users disabled by shell */
if(entry->pw_shell) {
if (hiddenShells.contains(entry->pw_shell)) {
continue;
}
}
if (hiddenUsers.contains(entry->pw_name)) {
continue;
}
tokens = QString(entry->pw_gecos).split(",");
if(tokens.size() > 0 && tokens.at(i) != "")
realName = tokens.at(i);
//replace this with QFile::exists();
QDir homeDir(entry->pw_dir);
imageFile = new QFile(homeDir.filePath(".face"));
if(!imageFile->exists()) {
delete imageFile;
imageFile = new QFile(homeDir.filePath(".face.icon"));
}
if(imageFile->exists())
{
delete imageFile;
imageFile = NULL;
}
User user(entry->pw_name, realName, entry->pw_dir, imageFile->fileName(), false);
users.append(user);
}
if(errno != 0) {
qDebug() << "Failed to read password database: " << strerror(errno);
}
endpwent();
delete settings;
return users;
}
void UsersModel::loadUsers()
{
QList<User> usersToAdd;
//FIXME accidently not got the "if contact removed" code. Need to restore that.
//should call beginRemoveRows, and then remove the row from the model.
//might get rid of "User" object, keep as private object (like sessionsmodel) - or make it copyable.
//loop through all the new list of users, if it's in the list already update it (or do nothing) otherwise append to list of new users
QList<User> newUserList = getUsers();
foreach(const User &user, newUserList) {
bool alreadyInList = false;
for(int i=0; i < d->users.size(); i++) {
if (user.name() == d->users[i].name()) {
alreadyInList = true;
d->users[i].update(user.name(), user.homeDirectory(), user.image(), user.isLoggedIn());
QModelIndex index = createIndex(i,0);
dataChanged(index, index);
}
}
if (!alreadyInList) {
usersToAdd.append(user);
}
}
//loop through all the existing users, if they're not in the newly gathered list, remove them.
//FIXME this isn't perfect, looping like this in a mutating list - use mutable iterator.
for (int i=0; i < d->users.size() ; i++) {
bool found = false;
foreach(const User &user, newUserList) {
if (d->users[i].name() == user.name()) {
found = true;
}
}
if (!found) {
beginRemoveRows(QModelIndex(), i, i);
d->users.removeAt(i);
endRemoveRows();
}
}
//append new users
if (usersToAdd.size() > 0) {
beginInsertRows(QModelIndex(), d->users.size(), d->users.size() + usersToAdd.size() -1);
d->users.append(usersToAdd);
endInsertRows();
}
}
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