DEPRECATED

This project will no longer be supported as the dependencies have been abandoned.

LoginManager.js

About

Easily design your own Linux greeter without having to worry about the implementation.

An event based interface for creating fully customizable Linux login themes using Lightdm's Webkit2 Greeter.

Installation

Install the lightdm and its webkit greeter, make sure that no other version of lightdm is installed on your system.

If your are not already using lightdm, install lightdm and lightdm-webkit2-greeter.

Arch and Manjaro

# pacman -S lightdm lightdm-webkit2-greeter

Debian (Ubuntu)

# apt-get install lightdm lightdm-webkit2-greeter

Now edit the lightdm config, in /etc/lightdm/lightdm.conf and set it to use the webkit2 greeter instead.

[Seat:*]
...
greeter-session=lightdm-webkit2-greeter
...

Next clone the this repo and copy it to the webkit2 themes folder. (You will need root permission for the copy)

$ git clone https://github.com/jelenis/login-manager.git
# cp -r lightdm-theme /usr/share/lightdm-webkit/themes/

Lastly, set the value of theme in /etc/lightdm/lightdm-webkit2-greeter.conf to lightdm-theme (or a custom name of your choice set in index.theme)

[greeter]
...
webkit_theme=lightdm-theme

Screenshots

Usage

Basic Usage

See theme.js and theme.css for basic usage.

API

The LoginManager provides the basic faclities for authenticating and starting the user session through an asynchronous event based API. This adds layer of abstraction between UI code and the lightdm interface.

LoginManager Interface

Defined in js/LoginManager.js as must be included after all Plugins and other dependencies.

Example: Creating a LoginManager.

// define a singleton LoginManager
let greeter = new LoginManager();

Any code that uses the LoginManager should only be performed after it has finished initializing itself and all of its plugins. The ready event can be used to so.

Example: Using LoginManager ready event.

// called after greeter and lightdm are initialized
$(greeter).on("ready", function(e) {
  // authentication code goes here
});

Authetication

A user must be authenticated prior to attempting to login. auth(username="", password="", callback) will asynchronously authenticate, triggering the appropriate grant or deny event and passing the resulting boolean to the callback function.

Example: Authentcating a user when the enter key is pressed in a password field.

/* Attempt authentication, 'grant' event will be emitted on sucecss
and 'deny' will be emitted on failure */
if (e.keyCode == 13) { // Enter key
  let username = $user.children("option:selected").val();
  let pass = $password.val();
  greeter.auth(username, pass); // no callback specified
}

Logging in (starting user session)

Once authentication has been performed you can start a user session with login(session_key)

Example: listenting for authentication and starting a user session

// when the user is authenticated, do a transition and login
$(greeter).on("grant", () => {
  let session_key = $session.children("option:selected").val();
  greeter.login(session_key);
})
.on("deny", () => {
  // inform the user that the credentials are invalid
  $password.removeClass("valid").addClass("invalid");
  $password.val("").prop("placeholder", "Incorrect Password");
});

LoginManager Public Definitions

List of Events

Event	Description
deny	Triggered after an unsucessful attempt to authenticate using `auth`
grant	Triggered after successfuly authenticating using `auth`
init	Triggered by LoginManager after the 'load' event has been fired by a plugin
load	Triggered by Plugins after they have finished loading their config files
ready	Triggered by Plugins and LoginManager after they have finished initailizing
active	Triggered once by SplashScreen Plugin after the user interacts with the SplashScreen
inactive	Triggered by the SplashScreen Plugin after a period of inactivity

Plugins

Plugins are stored in the LoginManager's plugin property and are dynamically generated by the plugins array in LoginManager.json.

Example: The SplashScreen plugin in LoginManager's config

"plugins": [
  "SplashScreen"
]

Example: SplashScreen

The SplashScreen plugin provides facilities to easily add content to a splash screen without having to worry about the details of implementation. Splash screen content can be changed in its config file SplashScreen.json.

General

The general settings for this plugin are specified in the root of the .json config file. The code will generate the content on this splash

"img": "",             // path to background image (can be left blank for none)
"fit": false,          // fits the background image to screen size, if there is one
"filter": false,       // applies blur to background image
"vignette": true,      // applies dark vignette to background image
"active-timeout": 15,  // specifies the timeout for active/inactive events
"transition": "fade",  // "fade" or "slide" to transition SplashScreen

Content: Clocks

The date in the sample image above is created and automatically updated with the following clock object. You can use custom CSS to style and position your clock. The parent-css property will allow you to add CSS to the clocks outer div.

"content": {
  "clock": [{
    "format": "dddd, MMMM Do",
    "css": {
      "color": "white"
    },
    "parent-css": {
      "margin-top": "calc(20vh - 70pt)",
      "text-align": "center",
      "font-size": "70pt",
      "font-family": "Noto Sans",
      "font-weight": "lighter",
      "text-shadow": "rgba(0, 0, 0, 0.5) 0px 7px 10px",
    }
    ...

To add the sytlized time to our splash screen we need to add another clock. This one will consist of two parts one for the actual time and another for the sylized AM/PM. This means formats, and thus two css objects.

"content": {
  "clock": [{
    ...
},{
  "format": ["h:mm", "A"], // two formats for two clocks on the same line
  "css": [
    {"font-size": "65pt", "font-weight": 200 },
    {"font-size": "30pt", "font-weight": "lighter", "margin-left": "10pt"}
  ],
  "parent-css": {
    "margin-top": "20vh",
    "color": "white",
    "font-family": "Noto Sans",
    "text-align": "center",
    "text-shadow": "rgba(0, 0, 0, 0.5) 0px 7px 10px",
  }
}],

Content: html

Provides an interface to add any custom content to the SplashScreen.

Example: adding welcome text to SplashScreen, see default theme for an image.

content: {
  "html": [{
    "html":"<text style='display: none' class='active-appear'>Press any key to login</text>",
    "css": {
      "margin-top": "5vh",
      "font-weight": "200",
      "font-size": "23pt",
      "text-align": "center",
      "color": "rgba(255, 255, 255, 0.8)"
    }
  }]
}

Fascode-Archive/login-manager