// sample OTP:

// ttttvvvvvvcurikvhjcvnlnbecbkubjvuittbifhndhn

// charset: cbdefghijklnrtuv

var yk_interval = false;

var YK_SEC_NORMAL_USERNAME = 1;

var YK_SEC_NORMAL_PASSWORD = 2;

var YK_SEC_ELEV_USERNAME = 4;

var YK_SEC_ELEV_PASSWORD = 8;

var yubikey_otp_current = false;

function yk_mb_init(fieldid, statid)

{

  load_component(['messagebox', 'fadefilter', 'flyin', 'jquery', 'jquery-ui', 'l10n']);

  var mp = miniPrompt(yk_mb_construct);

  if ( typeof(fieldid) == 'function' )

  {

    var input = mp.getElementsByTagName('input')[0];

    input.submit_func = fieldid;

  }

  else if ( fieldid && statid )

  {

    var input = mp.getElementsByTagName('input')[0];

    input.yk_field_id = fieldid;

    input.yk_status_id = statid;

  }

}

function yk_mb_construct(mp)

{

  mp.innerHTML = '';

  mp.style.textAlign = 'center';

  mp.innerHTML = '<h3>' + $lang.get('yubiauth_msg_please_touch_key') + '</h3>';

  var ta = document.createElement('input');

  ta.submitted = false;

  $(ta)

    .css('background-color', 'transparent')

    .css('border-width', '0px')

    .css('color', '#fff')

    .css('font-size', '1px')

    .css('padding', '0')

    .attr('size', '1')

    .keyup(function(e)

      {

        if ( e.keyCode == 27 )

        {

          window.clearInterval(yk_interval);

          miniPromptDestroy(this);

        }

        else if ( this.value.length == 44 && !this.submitted )

        {

          this.submitted = true;

          yk_handle_submit(this);

        }

        e.preventDefault();

        e.stopPropagation();

      });

  mp.appendChild(ta);

  setTimeout(function()

    {

      window.yk_interval = setInterval(function()

        {

          ta.focus();

        }, 50);

    }, 750);

  var info = document.createElement('p');

  info.innerHTML = $lang.get('yubiauth_msg_close_instructions');

  mp.appendChild(info);

}

function yk_handle_submit(ta)

{

  if ( !ta.value.match(/^[cbdefghijklnrtuv]{44}$/) )

  {

    setTimeout(function()

      {

        yk_mb_construct(ta.parentNode);

      }, 1000);

    ta.previousSibling.innerHTML = $lang.get('yubiauth_msg_invalid_chars');

    return false;

  }

  window.clearInterval(yk_interval);

  if ( ta.yk_field_id && ta.yk_status_id )

  {

    var field = document.getElementById(ta.yk_field_id);

    var status = document.getElementById(ta.yk_status_id);

    if ( $(status).hasClass('empty') || $(status).hasClass('rmpending') )

    {

      $(status).next('a')

        .text($lang.get('yubiauth_ctl_btn_change_key'))

        .addClass('abutton_green')

        .after(' <a class="abutton abutton_red yubikey_enroll" href="#yk_clear" onclick="yk_clear(\'' + ta.yk_field_id + '\', \'' + ta.yk_status_id + '\'); return false;">'

               + $lang.get('yubiauth_ctl_btn_clear') +

               '</a>');

    }

    $(status).removeClass('empty').removeClass('enrolled').removeClass('rmpending').addClass('savepending').html($lang.get('yubiauth_ctl_status_enrolled_pending'));

    field.value = ta.value;

    miniPromptDestroy(ta);

    return true;

  }

  else if ( ta.submit_func )

  {

    ta.submit_func(ta);

  }

  else

  {

    miniPromptDestroy(ta);

  }

}

function yk_login_validate_reqs(ta)

{

  ta.parentNode.removeChild(ta.nextSibling);

  yubikey_otp_current = ta.value;

  ta.previousSibling.innerHTML = $lang.get('yubiauth_msg_validating_otp');

  ajaxPost(makeUrlNS('Special', 'Yubikey'), 'get_flags=' + ta.value.substr(0, 12), function(ajax)

    {

      if ( ajax.readyState == 4 && ajax.status == 200 )

      {

        miniPromptDestroy(ta);

        if ( !check_json_response(ajax.responseText) )

        {

          handle_invalid_json(ajax.responseText);

          return false;

        }

        ta.previousSibling.innerHTML = $lang.get('yubiauth_msg_otp_valid');

        var response = parseJSON(ajax.responseText);

        if ( response.mode == 'error' )

        {

          alert('Yubikey server-side processing error: \n' + response.error);

          return false;

        }

        if ( logindata )

        {

          if ( logindata.mb_object )

          {

            // login window is open

            if ( user_level == USER_LEVEL_GUEST )

            {

              var show_username = response.flags & YK_SEC_NORMAL_USERNAME;

              var show_password = response.flags & YK_SEC_NORMAL_PASSWORD;

            }

            else

            {

              var show_username = response.flags & YK_SEC_ELEV_USERNAME;

              var show_password = response.flags & YK_SEC_ELEV_PASSWORD;

            }

            if ( !show_username )

              $('#ajax_login_field_username').parent('td').hide().prev().hide();

            if ( !show_password )

              $('#ajax_login_field_password').parent('td').hide().prev().hide();

            var can_submit = true;

            if ( show_username && !$('#ajax_login_field_username').attr('value') )

            {

              $('#ajax_login_field_password').focus();

              can_submit = false;

            }

            if ( show_password && !$('#ajax_login_field_password').attr('value') )

            {

              if ( can_submit )

              {

                $('#ajax_login_field_password').focus();

              }

              can_submit = false;

            }

            if ( can_submit )

            {

              $('#messageBoxButtons input:button:first').click();

            }

          }

        }

      }

    });

}

function yk_clear(field_id, status_id)

{

  var field = document.getElementById(field_id);

  var status = document.getElementById(status_id);

  var was_pending = $(field).hasClass('wasempty');

  $(field).attr('value', '');

  $(status)

    .removeClass('savepending')

    .removeClass('enrolled')

    .addClass( was_pending ? 'empty' : 'rmpending' )

    .text( was_pending ? $lang.get('yubiauth_ctl_status_empty') : $lang.get('yubiauth_ctl_status_remove_pending') )

    .next('a')

      .text($lang.get('yubiauth_ctl_btn_enroll'))

      .removeClass('abutton_green')

    .next('a')

      .remove();

}

addOnloadHook(function()

  {

    attachHook('login_build_form', 'yk_login_dlg_hook(table);');

    attachHook('login_build_userinfo', 'if ( window.yubikey_otp_current ) userinfo.yubikey_otp = window.yubikey_otp_current;');

    load_component(['expander', 'jquery', 'jquery-ui']);

  });

function yk_login_dlg_hook(table)

{

  window.yubikey_otp_current = false;

  var tr = document.createElement('tr');

  var td = document.createElement('td');

  $(td)

    .attr('colspan', '2')

    .css('text-align', 'center')

    .css('font-size', 'smaller')

    .css('font-weight', 'bold')

    .html('<a href="#" onclick="yk_mb_init(yk_login_validate_reqs); return false;" style="color: #6fa202">' + $lang.get('yubiauth_btn_enter_otp') + '</a>');

  $('a', td).blur(function(e)

    {

      $('#messageBoxButtons input:button:first').focus();

      $('#ajax_login_field_captcha').focus();

    });

  tr.appendChild(td);

  table.appendChild(tr);

}