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package WWW::Link::Tester::Simple; |
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$REVISION=q$Revision: 1.9 $ ; $VERSION = sprintf ( "%d.%02d", $REVISION =~ /(\d+).(\d+)/ ); |
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=head1 NAME |
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WWW::Link::Tester::Simple - a link tester that uses the LWP head method |
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=head1 SYNOPSIS |
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use WWW::Link::Test::Simple |
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$ua=create_a_user_agent(); |
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$link=get_a_link_object(); |
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WWW::Link::Test::Simple::test_link($ua, $link); |
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WWW::Link::Tester::Simple::Test($url) |
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=head1 DESCRIPTION |
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This is a simple Link Testing module which accepts a url and returns a |
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status based on the result returned by the LWP useragent. |
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The link is tested and then given information about what was |
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discovered. The link then records this information for future use.. |
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=head1 METHODS |
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=head2 test_link |
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This function tests a link by going out to the world and checking it |
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and then telling the associated link object what happened. |
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=cut |
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use HTTP::Response; |
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use HTTP::Request; |
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use WWW::Link::Tester; |
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@ISA="WWW::Link::Tester"; |
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use warnings; |
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use strict; |
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use Carp; |
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sub new { |
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my $proto = shift; |
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my $class = ref($proto) || $proto; |
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my $self = {}; |
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$self->{"user_agent"}=shift; |
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bless $self, $class; |
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$self->config(); |
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return $self; |
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} |
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sub get_response { |
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my $self=shift; |
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my $link=shift; |
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my $user_agent=$self->{"user_agent"}; |
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my $url=$link->url(); |
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my $supported; |
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my $verbose=$self->{"verbose"}; |
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my $urlo=new URI($url); |
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my $proto=$urlo->scheme(); |
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eval { $supported = $user_agent->is_protocol_supported($proto) ; }; |
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#if it get's really upset, is_protocol_supported sometimes dies. We |
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#just treat this as an unsupported link. |
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$@ && do { |
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warn $@; |
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$supported=0; |
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}; |
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$supported or do { |
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my $response=new HTTP::Response ( RC_PROTOCOL_UNSUPPORTED, |
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MSG_PROTOCOL_UNSUPPORTED ); |
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return $response; |
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}; |
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my $request=new HTTP::Request ('HEAD',$url); |
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print STDERR "sending request\n" if $verbose; |
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my $response=$user_agent->simple_request($request); |
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print STDERR "got response\n" if $verbose; |
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#warn on client error |
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if ($self->{warn_access}) { # warn about links where we can't access it |
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# but someone might |
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print STDERR "didn't have authorisation\n"; |
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} |
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my @redirects; |
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REDIRECT: while ($response->is_redirect()) { |
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2833
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my $loc = $response->headers->header('Location'); |
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1125
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(defined $loc) || do { |
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carp "redirect with no location!"; |
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$response=new HTTP::Response (RC_REDIRECT_LIMIT_EXCEEDED, |
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MSG_REDIRECT_LIMIT_EXCEEDED); |
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last REDIRECT; |
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}; |
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print STDERR "have a redirect: " . $loc . "\n" if $verbose; |
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push @redirects, $response; |
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(@redirects == $self->{"max_redirects"}) && do { |
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$response=new HTTP::Response (RC_REDIRECT_LIMIT_EXCEEDED, |
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MSG_REDIRECT_LIMIT_EXCEEDED); |
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2
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last; |
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}; |
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my $request=new HTTP::Request ('HEAD',$loc); |
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30
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3060
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$response=$user_agent->simple_request($request); |
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} |
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return $response, @redirects; |
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} |
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116
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1; #kEEp rEqUIrE HaPpY. |
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