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package Kwiki::URLBlock; |
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use Kwiki::Plugin -Base; |
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use Kwiki::Installer -base; |
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our $VERSION = '0.05'; |
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const class_id => 'urlblock'; |
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const class_title => 'URL Block'; |
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const config_file => 'urlblock.yaml'; |
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sub register { |
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require URI::Find; |
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my $registry = shift; |
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$registry->add(hook => 'edit:save', pre => 'urlblock_hook'); |
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$registry->add(action => 'blocked_url'); |
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} |
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sub urlblock_hook { |
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my $hook = pop; |
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my $urlblock = $self->hub->urlblock; |
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my $old_page = $self->hub->pages->new_page($self->pages->current->id); |
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my @old_urls = $urlblock->get_urls($old_page->content); |
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my @urls = $urlblock->get_urls($self->cgi->page_content); |
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my @new_urls = $urlblock->get_new_urls(\@old_urls, \@urls); |
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if (@new_urls && $urlblock->is_blocked(\@new_urls)) { |
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$hook->cancel(); |
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return $self->redirect("action=blocked_url"); |
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} |
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} |
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sub get_urls { |
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require URI::Find; |
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my ($content) = @_; |
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my @list; |
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my $finder = URI::Find->new( sub { |
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my($uri, $orig_uri) = @_; |
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push @list, $uri; |
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return $orig_uri; |
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}); |
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$finder->find(\$content); |
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return @list; |
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} |
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sub get_new_urls { |
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my ($old_urls, $urls) = @_; |
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my @new_urls; |
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my %old = map { $_ => 1 } @$old_urls; |
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foreach my $url (@$urls) { |
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push @new_urls, $url unless $old{$url}; |
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} |
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return @new_urls; |
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} |
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sub is_blocked { |
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my ($new_urls) = @_; |
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my $max_allowed = $self->config->urlblock_max_allowed; |
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if ($max_allowed && @$new_urls > $max_allowed) { |
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return 1; |
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} |
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my $blacklist = $self->blacklist($self->config->urlblock_blacklist); |
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return unless $blacklist; |
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foreach (@$new_urls) { |
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return 1 if /$blacklist/; |
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} |
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return; |
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} |
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sub blacklist { |
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my ($path) = @_; |
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my $file = io($path); |
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return unless $file->exists; |
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my $list = $file->slurp; |
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$list =~ s/\#.*//g; |
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$list =~ s/\s+/|/g; |
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$list =~ s/^\|//g; |
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$list =~ s/\|$//g; |
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return qr/$list/; |
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} |
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sub blocked_url { |
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return $self->render_screen( |
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content_pane => 'blocked_url.html', |
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); |
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} |
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__DATA__ |