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package Plack::Middleware::RealIP; |
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84874
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use strict; |
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use warnings; |
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use 5.008; |
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5
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our $VERSION = 0.04; |
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use parent qw/Plack::Middleware/; |
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256
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13
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7
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13638
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use Net::Netmask; |
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338404
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use Plack::Util::Accessor qw( header trusted_proxy ); |
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sub prepare_app { |
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1
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13050
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my $self = shift; |
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local $Net::Netmask::SHORTNET_DEFAULT = 1; |
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if (my $trusted_proxy = $self->trusted_proxy) { |
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my @trusted_proxy = map { Net::Netmask->new($_) } ref($trusted_proxy) ? @{ $trusted_proxy } : ($trusted_proxy); |
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4
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754
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$self->trusted_proxy(\@trusted_proxy); |
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} |
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} |
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sub call { |
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34383
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my $self = shift; |
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my $env = shift; |
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10
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my $header; |
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10
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if ($header = $self->header) { |
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($header = uc $header) =~ tr/-/_/; |
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$header = "HTTP_$header" unless $header =~ /^(?:HTTP|CONTENT|COOKIE)/; |
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} |
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10
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my (@remote, @trusted_proxy); |
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100
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@remote = $env->{$header} =~ /([^,\s]+)/g if exists $env->{$header}; |
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@trusted_proxy = @{ $self->trusted_proxy } if $self->trusted_proxy; |
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100
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66
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if (@remote and @trusted_proxy) { |
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8
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my @unconfirmed = (@remote, $env->{REMOTE_ADDR}); |
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8
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while (my $addr = pop @unconfirmed) { |
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15
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my $has_matched = 0; |
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15
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foreach my $netmask (@trusted_proxy) { |
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100
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$has_matched++, last if $netmask->match($addr); |
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} |
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15
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100
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654
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$env->{REMOTE_ADDR} = $addr, last unless $has_matched; |
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} |
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46
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100
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if (@unconfirmed) { |
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4
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$env->{$header} = join(', ', @unconfirmed); |
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} else { |
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delete $env->{$header}; |
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} |
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} |
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10
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40
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return $self->app->($env); |
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} |
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1; |
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58
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=head1 NAME |
59
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60
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Plack::Middleware::RealIP - Override client IP with header value provided by proxy/load balancer |
61
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62
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=head1 SYNOPSIS |
63
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64
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enable 'Plack::Middleware::RealIP', |
65
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header => 'X-Forwarded-For', |
66
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trusted_proxy => [qw(192.168.1.0/24 192.168.2.1)]; |
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68
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=head1 DESCRIPTION |
69
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70
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Plack::Middleware::RealIP is loose port of the Apache module |
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mod_remoteip. It overrides C with the IP address advertised |
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in the request header configured with C |
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74
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When multiple, comma delimited IP addresses are listed in the header |
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value, they are processed from right to left. The first untrusted IP |
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address found, based on C, stops the processing and is |
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set to be C. The header field is updated to this remaining |
78
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list of unconfirmed IP addresses, or if all IP addresses were trusted, |
79
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this header is removed from the request altogether. |
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81
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=head1 CONFIGURATION |
82
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83
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=head2 header |
84
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85
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Sets a request header to trust as the client IP, e.g. X-Client-IP |
86
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87
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=head2 trusted_proxy |
88
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89
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A list of IP addresses or subnet blocks which are trusted to provide IP header. |
90
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91
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=head1 AUTHOR |
92
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93
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Sherwin Daganato Esherwin@daganato.comE |
94
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95
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Most of the logic is based on L by Graham Barr |
96
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97
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=head1 CONTRIBUTORS |
98
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99
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jmaslak: Joelle Maslak |
100
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101
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=head1 LICENSE |
102
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103
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This library is free software; you can redistribute it and/or modify |
104
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it under the same terms as Perl itself. |
105
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106
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=head1 SEE ALSO |
107
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108
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L |
109
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110
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L |
111
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112
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L |
113
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114
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L |
115
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116
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=cut |