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Dancer-1.3522
⭐ Starred 738 / Dancer::Object
Security Advisories (1)
CVE-2026-5080 (2026-04-30)

Dancer::Session::Abstract versions through 1.3522 for Perl generates session ids insecurely. The session id is generated from summing the character codepoints of the absolute pathname with the process id, the epoch time and calls to the built-in rand() function to return a number between 0 and 999-billion, and concatenating that result three times. The path name might be known or guessed by an attacker, especially for applications known to be written using Dancer with standard installation locations. The epoch time can be guessed by an attacker, and may be leaked in the HTTP header. The process id comes from a small set of numbers, and workers may have sequential process ids. The built-in rand() function is seeded with 32-bits and is considered unsuitable for security applications. Predictable session ids could allow an attacker to gain access to systems.

NAME

Dancer::Object - Objects base class for Dancer

VERSION

version 1.3522

SYNOPSIS

package My::Dancer::Extension;

use strict;
use warnings;
use base 'Dancer::Object';

__PACKAGE__->attributes( qw/name value this that/ );

sub init {
    # our initialization code, if we need one
}

DESCRIPTION

While we love Moose, we can't use it for Dancer and still keep Dancer minimal, so we wrote Dancer::Object instead.

It provides you with attributes and an initializer.

METHODS

new

Creates a new object of whatever is based off Dancer::Object. This is a generic new method so you don't have to write one yourself when extending Dancer::Object.

It accepts arguments in a hash and runs an additional init method (described below) which you should implement.

init

Exists but does nothing. This is so you won't have to write an initializer if you don't want to.

clone

Creates and returns a clone of the object using Clone, which is loaded dynamically. If we cannot load Clone, we throw an exception.

get_attributes

Get the attributes of the specific class.

attributes

Generates attributes for whatever object is extending Dancer::Object and saves them in an internal hashref so they can be later fetched using get_attributes.

For each defined attribute you can access its value using:

$self->your_attribute_name;

To set a value use

$self->your_attribute_name($value);

Nevertheless, you can continue to use these attributes as hash keys, as usual with blessed hash references:

$self->{your_attribute_name} = $value;

Although this is possible we defend you should use the method approach, as it maintains compatibility in case Dancer::Object structure changes in the future.

attributes_defaults

$self->attributes_defaults(length => 2);

given a hash (not a hashref), makes sure an object has the given attributes default values. Usually called from within an init function.

AUTHOR

Dancer Core Developers

COPYRIGHT AND LICENSE

This software is copyright (c) 2010 by Alexis Sukrieh.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.