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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/user.h"
#include <pwd.h>
#include <errno.h>
#include <QtCore/QSharedData>
#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 UserItem
{
public:
QString name;
QString realName;
QString homeDirectory;
QString image;
bool isLoggedIn;
QString displayName() const;
};
QString UserItem::displayName() const {
if (realName.isEmpty()){
return name;
}
else {
return realName;
}
}
class UsersModelPrivate {
public:
QList<UserItem> 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<UserItem> UsersModel::getUsers() const
{
QString file = "/etc/lightdm/users.conf"; //FIXME hardcoded path!!
qDebug() << "Loading user configuration from " << file;
QSettings settings(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<UserItem> users;
setpwent();
Q_FOREVER {
errno = 0;
struct passwd *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;
}
QStringList tokens = QString(entry->pw_gecos).split(",");
QString realName;
if(tokens.size() > 0 && tokens.at(0) != "") {
realName = tokens.at(0);
}
QDir homeDir(entry->pw_dir);
QString image = homeDir.filePath(".face");
if(!QFile::exists (image)) {
image = homeDir.filePath(".face.icon");
if(!QFile::exists (image)) {
image = "";
}
}
UserItem user;
user.name = entry->pw_name;
user.realName = realName;
user.homeDirectory = entry->pw_dir;
user.image = image;
user.isLoggedIn = false;
users.append(user);
}
if(errno != 0) {
qDebug() << "Failed to read password database: " << strerror(errno);
}
endpwent();
return users;
}
void UsersModel::loadUsers()
{
QList<UserItem> usersToAdd;
//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<UserItem> newUserList = getUsers();
Q_FOREACH(const UserItem &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 UserItem &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();
}
}
#include "user_moc.cpp"
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