Reference

Plack::Builder::Conditionals(3pm)

Plack::Builder extension

NAME

Plack::Builder::Conditionals - Plack::Builder extension

SYNOPSIS

  use Plack::Builder;
  use Plack::Builder::Conditionals;
  # exports "match_if, addr, path, method, header, browser, any, all"
  builder {
      enable match_if addr(['192.168.0.0/24','127.0.0.1']),
          "Plack::Middleware::ReverseProxy";
      enable match_if all( path(qr!^/private!), addr( '!', [qw!127.0.0.1 ::1!] ) ),
          "Plack::Middleware::Auth::Basic", authenticator => \&authen_cb;
      enable match_if sub { my $env = shift; $env->{HTTP_X_ENABLE_FRAMEWORK} },
          "Plack::Middleware::XFramework", framework => 'Test';
      $app;
  };
  use Plack::Builder::Conditionals -prefx => 'c';
  # exports "c_match_if, c_addr, c_path, c_method, c_header, c_any, c_all"

DESCRIPTION

Plack::Builder::Conditionals is..

FUNCTIONS

match_if
  enable match_if addr('127.0.0.1'), "Plack::Middleware::ReverseProxy";
  enable match_if sub { $_[0]->{REMOTE_ADDR} eq '127.0.0.1' }, "Plack::Middleware::ReverseProxy";

As like Plack::Builder's enable_if enable middleware if given conditions return true

addr
  addr('127.0.0.1');
  addr([qw!192.168.0.0/24 127.0.0.1 ::1!]);
  addr('!','127.0.0.1');

return true if REMOTE_ADDR is found in the CIDR range. If first argument is '!', return the opposite result. This function supports IPv6 addresses

path
  path('/')
  path(qr!^/(\w+)/!)
  path('!', qr!^/private!)

matching PATH_INFO

method
  method('GET')
  method(qr/^(get|head)$/i)
  method(qw(GET HEAD))
  method('!','GET')
  method('!', qr/^(post|put)$/i)
  method('!', qw(POST PUT))
header
  header('User-Agent',qr/iphone/)
  header('If-Modified-Since') #exists check
  header('!', 'User-Agent',qr/MSIE/)
browser
  browser(qr/\bMSIE (7|8)/)
  browser('!',qr!^Mozilla/4!);

Shortcut for header('User-Agent')

all
  all( method('GET'), path(qr!^/static!) )

return true if all conditions are return true

any
  any( path(qr!^/static!), path('/favicon.ico') )

return true if any condition return true

EXPORT

  use Plack::Builder::Conditionals -prefx => 'c';
  # exports "c_match_if, c_addr, c_path, c_method, c_header, c_any, c_all"

you can add selected prefix to export functions

AUTHOR

Masahiro Nagano <kazeburo {at} gmail.com>

SEE ALSO

Plack::Builder

LICENSE

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

History