/**********************************************************************
** Copyright (C) 2000 Trolltech AS.  All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include "security.h"

#include <qpe/config.h>
#include <qpe/password.h>
#include <qpe/qpedialog.h>

#include <qcheckbox.h>
#include <qpushbutton.h>
#include <qcombobox.h>
#include <qmessagebox.h>

Security::Security( QWidget* parent,  const char* name, WFlags fl )
    : SecurityBase( parent, name, TRUE, fl )
{
    valid=FALSE;
    Config cfg("Security");
    cfg.setGroup("Passcode");
    passcode = cfg.readEntry("passcode");
    passcode_poweron->setChecked(cfg.readBoolEntry("passcode_poweron",FALSE));
    cfg.setGroup("Sync");
    int auth_peer = cfg.readNumEntry("auth_peer",0xc0a88100);//new default 192.168.129.0/24
    int auth_peer_bits = cfg.readNumEntry("auth_peer_bits",24);
    selectNet(auth_peer,auth_peer_bits);
    connect(syncnet, SIGNAL(textChanged(const QString&)),
      this, SLOT(setSyncNet(const QString&)));

    /*
    cfg.setGroup("Remote");
    if ( telnetAvailable() )
  telnet->setChecked(cfg.readEntry("allow_telnet"));
    else
  telnet->hide();

    if ( sshAvailable() )
  ssh->setChecked(cfg.readEntry("allow_ssh"));
    else
  ssh->hide();
    */

    connect(changepasscode,SIGNAL(clicked()), this, SLOT(changePassCode()));
    connect(clearpasscode,SIGNAL(clicked()), this, SLOT(clearPassCode()));
    updateGUI();

    dl = new QPEDialogListener(this);
}

Security::~Security()
{
}


void Security::updateGUI()
{
    bool empty = passcode.isEmpty();

    changepasscode->setText( empty ? tr("Set passcode" ) 
           : tr("Change passcode" )  );
    passcode_poweron->setEnabled( !empty );
    clearpasscode->setEnabled( !empty );
}


void Security::show()
{
    valid=FALSE;
    setEnabled(FALSE);
    SecurityBase::show();
    if ( passcode.isEmpty() ) {
  // could insist...
  //changePassCode();
  //if ( passcode.isEmpty() )
      //reject();
    } else {
  QString pc = enterPassCode(tr("Enter passcode"));
  if ( pc != passcode ) {
      QMessageBox::critical(this, tr("Passcode incorrect"), 
        tr("The passcode entered is incorrect.\nAccess denied"));
      reject();
      return;
  }
    }
    setEnabled(TRUE);
    valid=TRUE;
}

void Security::accept()
{
    applySecurity();
    QDialog::accept();
}

void Security::done(int r)
{
    QDialog::done(r);
    close();
}

void Security::selectNet(int auth_peer,int auth_peer_bits)
{
    QString sn;
    if ( auth_peer_bits == 0 && auth_peer == 0 ) {
  sn = tr("Any");
    } else if ( auth_peer_bits == 32 && auth_peer == 0 ) {
  sn = tr("None");
    } else {
  sn =
      QString::number((auth_peer>>24)&0xff) + "."
      + QString::number((auth_peer>>16)&0xff) + "."
      + QString::number((auth_peer>>8)&0xff) + "."
      + QString::number((auth_peer>>0)&0xff) + "/"
      + QString::number(auth_peer_bits);
    }
    for (int i=0; i<syncnet->count(); i++) {
  if ( syncnet->text(i).left(sn.length()) == sn ) {
      syncnet->setCurrentItem(i);
      return;
  }
    }
    qDebug("No match for \"%s\"",sn.latin1());
}

void Security::parseNet(const QString& sn,int& auth_peer,int& auth_peer_bits)
{
    auth_peer=0;
    if ( sn == tr("Any") ) {
  auth_peer = 0;
  auth_peer_bits = 0;
    } else if ( sn == tr("None") ) {
  auth_peer = 0;
  auth_peer_bits = 32;
    } else {
  int x=0;
  for (int i=0; i<4; i++) {
      int nx = sn.find(QChar(i==3 ? '/' : '.'),x);
      auth_peer = (auth_peer<<8)|sn.mid(x,nx-x).toInt();
      x = nx+1;
  }
  uint n = (uint)sn.find(' ',x)-x;
  auth_peer_bits = sn.mid(x,n).toInt();
    }
}

void Security::setSyncNet(const QString& sn)
{
    int auth_peer,auth_peer_bits;
    parseNet(sn,auth_peer,auth_peer_bits);
    selectNet(auth_peer,auth_peer_bits);
}

void Security::applySecurity()
{
    if ( valid ) {
  Config cfg("Security");
  cfg.setGroup("Passcode");
  cfg.writeEntry("passcode",passcode);
  cfg.writeEntry("passcode_poweron",passcode_poweron->isChecked());
  cfg.setGroup("Sync");
  int auth_peer=0;
  int auth_peer_bits;
  QString sn = syncnet->currentText();
  parseNet(sn,auth_peer,auth_peer_bits);
  cfg.writeEntry("auth_peer",auth_peer);
  cfg.writeEntry("auth_peer_bits",auth_peer_bits);
  /*
  cfg.setGroup("Remote");
  if ( telnetAvailable() )
      cfg.writeEntry("allow_telnet",telnet->isChecked());
  if ( sshAvailable() )
      cfg.writeEntry("allow_ssh",ssh->isChecked());
  // ### write ssh/telnet sys config files
  */
    }
}

void Security::changePassCode()
{
    QString new1;
    QString new2;

    do {
  new1 = enterPassCode(tr("Enter new passcode"));
  if ( new1.isNull() )
      return;
  new2 = enterPassCode(tr("Re-enter new passcode"));
  if ( new2.isNull() )
      return;
    } while (new1 != new2);

    passcode = new1;
    updateGUI();
}

void Security::clearPassCode()
{
    passcode = QString::null;
    updateGUI();
}


QString Security::enterPassCode(const QString& prompt)
{
    return Password::getPassword(prompt);
}

bool Security::telnetAvailable() const
{
    // ### not implemented
    return FALSE;
}

bool Security::sshAvailable() const
{
    // ### not implemented
    return FALSE;
}