Lincoln D. Stein > GBrowse-2.55 > Bio::Graphics::Browser2::Plugin::AuthPlugin



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Bio::Graphics::Browser2::Plugin::AuthPlugin -- Base class for authentication plugins


 package Bio::Graphics::Browser2::Plugin::MyPlugin;
 use base 'Bio::Graphics::Browser2::Plugin::AuthPlugin';

 sub authenticate {
     my $self = shift;
     my ($user,$password) = $self->credentials;
     return unless  $user eq 'george' && $password eq 'washington';
     return ($user,'George Washington','');

 sub user_in_group {
     my $self = shift;
     my ($user,$group) = @_;
     return $user eq 'george' && $group eq 'potomac';


This is a template for authorizer plugins. To define a new type of authorizer, you need only inherit from this class and define an authenticate() method. This method takes two arguments: the username and password and returns an empty list if authentication fails, or a list of (username, fullname, email) if authentication succeeds (fullname and email are optional).

In addition, you may override the user_in_group() method, which takes two argumetns: the username and group. Return true if the user belongs to the group, and false otherwise.

Other methods you may wish to override include:

 * authentication_hint()
 * authentication_help()
 * configure_form()
 * reconfigure()
 * credentials()

These are described below.

Methods you will need to override

$boolean = $plugin->authenticate($username,$password)

Return true if username and password are correct. False otherwise.

$boolean = $plugin->user_in_group($username,$groupname)

Return true if user belongs to group. False otherwise.

Methods that you may want to customize

$message = $plugin->authentication_hint

Returns a message printed at the top of the login dialog, that will help the user know which credentials he is expected to present. For example, returning "Acme Corp Single Sign-on" will present the user with "Please log into your Acme Corp Single Sign-on".

The default behavior is to take this value from the "login hint" option in a stanza named [AuthPlugin:plugin]. Example:

$message = $plugin->authentication_help

Returns a message printed at the bottom of the login dialog. It is expected to be used for a help message or link that will give the user help with logging in. For example, it can take him to a link to reset his password.

The default behavior is to take this value from the "login help" option in a stanza named [AuthPlugin:plugin].

  login hint = your Acme Corp Single Sign-on Account
  login help = <a href="">Recover forgotten password</a>

Methods that you may want to override

$html = $plugin->configure_form()

This method returns the contents of the login form. The default behavior is to produce two text fields, one named 'name' and the other named 'password'.


This method is called to copy the values from the filled-out form into the plugin's hash of configuration variables. If you add fields to configure_form() will you need to adjust this method as well.


Set up defaults for the configuration hash. Use this if you wish to default to a particular username.


This returns a two-element list containing the username and password last entered into the authentication dialog. It reads these values from the configuration hash returned by $self->configuration(). If you add additional types of credentials to the login dialog, you may need to override this method.




Lincoln Stein <<gt>.

Copyright (c) 2011 Ontario Institute for Cancer Research

This package and its accompanying libraries is free software; you can redistribute it and/or modify it under the terms of the GPL (either version 1, or at your option, any later version) or the Artistic License 2.0. Refer to LICENSE for the full license text. In addition, please see DISCLAIMER.txt for disclaimers of warranty.

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