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- package LWP::Protocol::cpan;
-
- use strict;
- use vars qw(@ISA);
-
- require LWP::Protocol;
- @ISA = qw(LWP::Protocol);
-
- require URI;
- require HTTP::Status;
- require HTTP::Response;
-
- our $CPAN;
-
- unless ($CPAN) {
- # Try to find local CPAN mirror via $CPAN::Config
- eval {
- require CPAN::Config;
- if($CPAN::Config) {
- my $urls = $CPAN::Config->{urllist};
- if (ref($urls) eq "ARRAY") {
- my $file;
- for (@$urls) {
- if (/^file:/) {
- $file = $_;
- last;
- }
- }
-
- if ($file) {
- $CPAN = $file;
- }
- else {
- $CPAN = $urls->[0];
- }
- }
- }
- };
-
- $CPAN ||= "http://cpan.org/"; # last resort
- }
-
- # ensure that we don't chop of last part
- $CPAN .= "/" unless $CPAN =~ m,/$,;
-
-
- sub request {
- my($self, $request, $proxy, $arg, $size) = @_;
- # check proxy
- if (defined $proxy)
- {
- return HTTP::Response->new(&HTTP::Status::RC_BAD_REQUEST,
- 'You can not proxy with cpan');
- }
-
- # check method
- my $method = $request->method;
- unless ($method eq 'GET' || $method eq 'HEAD') {
- return HTTP::Response->new(&HTTP::Status::RC_BAD_REQUEST,
- 'Library does not allow method ' .
- "$method for 'cpan:' URLs");
- }
-
- my $path = $request->uri->path;
- $path =~ s,^/,,;
-
- my $response = HTTP::Response->new(&HTTP::Status::RC_FOUND);
- $response->header("Location" => URI->new_abs($path, $CPAN));
- $response;
- }
-
- 1;
-