The Perl and Raku Conference 2025: Greenville, South Carolina - June 27-29 Learn more

SUKRIA / Dancer-1.9999_02 / lib / Dancer / Handler / File.pm 

            

              
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
148
149
150
151
152
153

              
# ABSTRACT: TODO
package Dancer::Handler::File;
{
    $Dancer::Handler::File::VERSION = '1.9999_02';
}
use Carp 'croak';
use Moo;
use HTTP::Date;
use Dancer::FileUtils 'path', 'read_file_content';
use Dancer::Core::MIME;
use Dancer::Core::Types;
with 'Dancer::Core::Role::Handler';
with 'Dancer::Core::Role::StandardResponses';
with 'Dancer::Core::Role::Hookable';
sub supported_hooks {
    qw(
      handler.file.before_render
      handler.file.after_render
    );
}
has mime => (
    is      => 'ro',
    isa     => InstanceOf ['Dancer::Core::MIME'],
    default => sub { Dancer::Core::MIME->new },
);
has encoding => (
    is      => 'ro',
    default => sub {'utf-8'},
);
has public_dir => (is => 'rw',);
has regexp => (
    is      => 'ro',
    default => sub {'/**'},
);
sub BUILD {
    my ($self) = @_;
    if (!defined $self->public_dir) {
        my $public =
             $self->app->config->{public}
          || $ENV{DANCER_PUBLIC}
          || path($self->app->location, 'public');
        $self->public_dir($public);
    }
}
sub register {
    my ($self, $app) = @_;
    # don't register the handler if no valid public dir
    return if !-d $self->public_dir;
    $app->add_route(
        method => $_,
        regexp => $self->regexp,
        code   => $self->code($app->prefix),
    ) for $self->methods;
}
sub methods { ('head', 'get') }
sub code {
    my ($self, $prefix) = @_;
    sub {
        my $ctx  = shift;
        my $path = $ctx->request->path_info;
        if ($path =~ /\0/) {
            return $self->response_400($ctx);
        }
        if ($prefix && $prefix ne '/') {
            $path =~ s/^\Q$prefix\E//;
        }
        my @tokens = split '/', $path;
        if (grep $_ eq '..', @tokens) {
            return $self->response_403($ctx);
        }
        my $file_path = path($self->public_dir, @tokens);
        $self->execute_hook('handler.file.before_render', $file_path);
        if (!-f $file_path) {
            $ctx->response->has_passed(1);
            return;
        }
        if (!-r $file_path) {
            return $self->response_403($ctx);
        }
        my $content = read_file_content($file_path);
        my $content_type = $self->mime->for_file($file_path) || 'text/plain';
        if ($content_type =~ m!^text/!) {
            $content_type .= "; charset=" . ($self->encoding || "utf-8");
        }
        my @stat = stat $file_path;
        $ctx->response->header('Content-Type')
          or $ctx->response->header('Content-Type', $content_type);
        $ctx->response->header('Content-Length')
          or $ctx->response->header('Content-Length', $stat[7]);
        $ctx->response->header('Last-Modified')
          or $ctx->response->header('Last-Modified',
            HTTP::Date::time2str($stat[9]));
        $ctx->response->content($content);
        $self->execute_hook('handler.file.after_render', $ctx->response);
        return ($ctx->request->method eq 'GET') ? $content : '';
    };
}
1;
__END__
=pod
=head1 NAME
Dancer::Handler::File - TODO
=head1 VERSION
version 1.9999_02
=head1 AUTHOR
Dancer Core Developers
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2012 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.
=cut