Provided by: libmojolicious-plugin-authentication-perl_1.29-1_all 
NAME
Mojolicious::Plugin::Authentication - A plugin to make authentication a bit easier
VERSION
version 1.29
SYNOPSIS
use Mojolicious::Plugin::Authentication
$self->plugin('authentication' => {
'autoload_user' => 1,
'session_key' => 'wickedapp',
'load_user' => sub { ... },
'validate_user' => sub { ... },
'current_user_fn' => 'user', # compatibility with old code
});
if ($self->authenticate('username', 'password', { optional => 'extra data stuff' })) {
...
}
METHODS
authenticate($username, $password, $extra_data_hashref)
Authenticate will use the supplied "load_user" and "validate_user" subroutine refs to see whether a user
exists with the given username and password, and will set up the session accordingly. Returns true when
the user has been successfully authenticated, false otherwise. You can pass additional data along in the
extra_data hashref, it will be passed to your "validate_user" subroutine as-is. If the extra data hash
contains a key 'auto_validate', the value of that key will be used as the UID, and authenticate will not
call your validate_user callback; this can be used when working with oAuth tokens or other authentication
mechanisms that do not use a local username and password form.
is_user_authenticated
Returns true if current_user() returns some valid object, false otherwise.
current_user
Returns the user object as it was returned from the supplied "load_user" subroutine ref.
reload_user
Flushes the current user object and then returns user().
signature_exists
Returns true if uid signature exist on the client side (in cookies), false otherwise.
Warning: non-secure check! Use this method only for a "fast & dirty" lookup to see if the client has the
proper cookies. May be helpful in some cases (for example - in counting 'guest'/'logged users' or for
additional non-confidential information for 'logged users' but not for 'guest').
logout
Removes the session data for authentication, and effectively logs a user out.
CONFIGURATION
The following options can be set for the plugin:
load_user (REQUIRED) A coderef for user loading (see "USER LOADING")
validate_user (REQUIRED) A coderef for user validation (see "USER VALIDATION")
session_key (optional) The name of the session key
autoload_user (optional) Turn on/off automatic loading of user data - user data can be loaded only if it
be used. May reduce site latency in some cases.
current_user_fn (optional) Set the name for the current_user() helper function
In order to set the session expiry time, use the following in your startup routine:
$app->plugin('authentication', { ... });
$app->sessions->default_expiration(86400); # set expiry to 1 day
$app->sessions->default_expiration(3600); # set expiry to 1 hour
USER LOADING
The coderef you pass to the load_user configuration key has the following signature:
sub {
my ($app, $uid) = @_;
...
return $user;
}
The uid is the value that was originally returned from the "validate_user" coderef. You must return
either a user object (it can be a hashref, arrayref, or a blessed object) or undef.
USER VALIDATION
User validation is what happens when we need to authenticate someone. The coderef you pass to the
"validate_user" configuration key has the following signature:
sub {
my ($app, $username, $password, $extradata) = @_;
...
return $uid;
}
You must return either a user id or undef. The user id can be numerical or a string. Do not return
hashrefs, arrayrefs or objects, since the behaviour of this plugin could get a little bit on the odd side
of weird if you do that.
EXAMPLES
For a code example using this, see the t/01-functional.t and t/02-functional_lazy.t tests, it uses
Mojolicious::Lite and this plugin.
ROUTING VIA CONDITION
This plugin also exports a routing condition you can use in order to limit access to certain documents to
only authenticated users.
$r->route('/foo')->over(authenticated => 1)->to('mycontroller#foo');
my $authenticated_only = $r->route('/members')->over(authenticated => 1)->to('members#index');
$authenticated_only->route('online')->to('members#online');
If someone is not authenticated, these routes will not be considered by the dispatcher and unless you
have set up a catch-all route, a 404 Not Found will be generated instead.
And another condition for fast and unsecured checking for users, having a signature (without validating
it). This method just checks client cookies for uid data existing.
$r->route('/foo')->over(signed => 1)->to('mycontroller#foo');
This behavior is similar to the "authenticated" condition.
ROUTING VIA CALLBACK
If you want to be able to send people to a login page, you will have to use the following:
my $members_only = $r->route('/members')->to(cb => sub {
my $self = shift;
$self->redirect_to('/login') and return 0 unless($self->is_user_authenticated);
return 1;
});
$members_only->route('online')->to('members#online');
Lazy and unsecured methods:
my $members_only = $r->route('/unimportant')->to(cb => sub {
my $self = shift;
$self->redirect_to('/login') and return 0 unless($self->signature_exists);
return 1;
});
$members_only->route('pages')->to('unimportant#pages');
ROUTING VIA BRIDGE
If you want to be able to send people to a login page, you will have to use the following:
my $auth_bridge = $r->under('/members')->to('auth#check');
$auth_bridge->route('/list')->to('members#list'); # only visible to logged in users
And in your Auth controller you would put:
sub check {
my $self = shift;
$self->redirect_to('/login') and return 0 unless($self->is_user_authenticated);
return 1;
});
Lazy and unsecured methods:
sub check {
my $self = shift;
$self->redirect_to('/login') and return 0 unless($self->signature_exists);
return 1;
});
SEE ALSO
Mojolicious::Sessions, Mojocast 3: Authentication <http://mojocasts.com/e3#>
AUTHOR
Ben van Staveren, "<madcat at cpan.org>"
BUGS / CONTRIBUTING
Please report any bugs or feature requests through the web interface at
<https://github.com/benvanstaveren/mojolicious-plugin-authentication/issues>.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Mojolicious::Plugin::Authentication
You can also look for information at:
• AnnoCPAN: Annotated CPAN documentation
<http://annocpan.org/dist/Mojolicious-Plugin-Authentication>
• CPAN Ratings
<http://cpanratings.perl.org/d/Mojolicious-Plugin-Authentication>
• Search CPAN
<http://search.cpan.org/dist/Mojolicious-Plugin-Authentication/>
ACKNOWLEDGEMENTS
Andrew Parker
- For pointing out some bugs that crept in; a silent reminder not to code while sleepy
Mirko Westermeier (memowe)
- For doing some (much needed) code cleanup
Terrence Brannon (metaperl)
- Documentation patches
Karpich Dmitry (meettya)
- lazy_mode and signature_exists functionality, including a test and documentation
Ivo Welch
- For donating his first ever Mojolicious application that shows an example of how
to use this module
Ed W
- Adding the current_user() functionality, as well as some method renaming to make things
a bit more sane.
SailingYYC (Github)
- For reporting an issue with routing conditions; I really should not code while sleepy, brainfarts
imminent!
carragom (Github)
- For fixing the bug that'd consider an uid of 0 or "0" to be a problem
LICENSE AND COPYRIGHT
Copyright 2011-2015 Ben van Staveren.
This program is free software; you can redistribute it and/or modify it under the terms of either: the
GNU General Public License as published by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.