1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
package HTML::FormHandler::Field::Captcha;
# ABSTRACT: captcha field with GD::SecurityImage
use Moose;
extends 'HTML::FormHandler::Field';
use HTTP::Date;
has 'height' => ( isa => 'Int', is => 'rw', default => '20' );
has 'width' => ( isa => 'Int', is => 'rw', default => '80' );
has 'scramble' => ( isa => 'Int', is => 'rw', default => '0' );
has 'lines' => ( isa => 'Int', is => 'rw', default => '2' );
has 'gd_font' => ( isa => 'Str', is => 'rw', default => 'Large' );
has 'image' => ( is => 'rw' );
has '+css_class' => ( default => 'captcha' );
has '+widget' => ( default => 'Captcha' );
has '+noupdate' => ( default => 1 );
our $class_messages = {
'captcha_verify_failed' => 'Verification incorrect. Try again.',
};
sub get_class_messages {
my $self = shift;
return {
%{ $self->next::method },
%$class_messages,
}
}
sub get_default_value {
my $self = shift;
my $captcha = $self->form->get_captcha;
# setting the widget after the field is instantiated
# doesn't actually work. The Captcha widget checks for
# this setting though.
if ($captcha) {
if ( $captcha->{validated} ) {
$self->required(0);
$self->widget('NoRender');
}
else {
$self->required(1);
$self->widget('Captcha');
$self->image( $captcha->{image} );
}
}
else {
$self->required(1);
$self->widget('Captcha');
$self->gen_captcha;
}
return;
}
sub validate {
my $self = shift;
my $captcha = $self->form->get_captcha;
unless ( $captcha->{rnd} eq $self->value ) {
$self->add_error($self->get_message('captcha_verify_failed'));
$self->gen_captcha;
}
else {
$captcha->{validated} = 1;
}
return !$self->has_errors;
}
sub fif { }
sub gen_captcha {
my $self = shift;
require GD::SecurityImage;
my ( $image, $type, $rnd ) = GD::SecurityImage->new(
height => $self->height,
width => $self->width,
scramble => $self->scramble,
lines => $self->lines,
gd_font => $self->gd_font,
)->random->create->out;
my $captcha = {
image => $image,
type => $type,
rnd => $rnd,
validated => 0,
};
$self->image($image);
$self->form->set_captcha($captcha);
}
__PACKAGE__->meta->make_immutable;
use namespace::autoclean;
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
HTML::FormHandler::Field::Captcha - captcha field with GD::SecurityImage
=head1 VERSION
version 0.40057
=head1 SYNOPSIS
A Captcha class using GD::SecurityImage.
Requires that three methods be available from a form object:
$self->form->get_captcha;
$self->form->set_captcha;
Using Catalyst and the Catalyst session plugin this field can be used
in a form by using L<HTML::FormHandler::TraitFor::Captcha>.
package MyApp::Form::Post;
use HTML::FormHandler::Moose;
with 'HTML::FormHandler::TraitFor::Captcha';
You can set the following attributes on the 'captcha' field:
height, width, scramble, lines, gd_font
Example:
has 'captcha' => ( height => '24', width => '70' );
=head1 AUTHOR
FormHandler Contributors - see HTML::FormHandler
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Gerda Shank.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
