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Viewing changes to tdiary/filter/spamlinkcheck.rb

  • Committer: Bazaar Package Importer
  • Author(s): Daigo Moriwaki
  • Date: 2011-04-11 21:53:16 UTC
  • mfrom: (1.2.3 upstream)
  • Revision ID: james.westby@ubuntu.com-20110411215316-ih4gt4q8p29d2wf8
Tags: 3.0.1-1
http://bugs.debian.org/542801
http://bugs.debian.org/594947
* New upstream release (Closes: #542801, #594947)
* debian/control:
 - Bumped up Standards-Version to 3.9.1.
 - Updated version dependency.
* debian/tdiary-setup.rb: Followed the upstream changes, incorporating js and
  index.fcgi

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tdiary/filter/spamlinkcheck.rb
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#
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# linkcheck.rb: tDiary filter for checking link to my site in TrackBack source site.
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#
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# specification:
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#    * if source site has no URI of my site of top page, it's spam!
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#    * reading only top of 100KB of source site.
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#    * no response over 10 sec, it's mybe spam.
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#
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# Copyright (C) 2007 by TADA Tadashi <sho@spc.gr.jp>
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# Distributed under GPL2.
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#
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require 'open-uri'
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require 'timeout'
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module TDiary::Filter
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        class SpamlinkcheckFilter < Filter
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                def initialize( *args )
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                        super( *args )
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                        @filter_mode = @conf['spamfilter.filter_mode']
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                        @filter_mode = true if @filter_mode == nil
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                end
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                def comment_filter( diary, comment )
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                        if @conf['spamfilter.linkcheck'] == 0 then
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                                debug( "No linkcheck to TrackBacks.", DEBUG_FULL )
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                                return true
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                        end
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                        # check only TrackBack
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                        return true unless comment.name == 'TrackBack'
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                        dest_uri = @conf.index.dup
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                        dest_uri[0, 0] = @conf.base_url if %r|^https?://|i !~ @conf.index
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                        dest_uri.gsub!( %r|/\./|, '/' )
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                        # TrackBack URI is the 1st line of comment.body.
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                        src_uri, = comment.body.split( /\n/ )
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                        unless %r|^https?://|i =~ src_uri then
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                                debug( "TrackBack has bad source URI." )
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                                comment.show = false
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                                return @filter_mode
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                        end
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                        if src_uri.index( dest_uri ) == 0 then
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                                debug( "TrackBack was sent to myself.", DEBUG_FULL )
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                                return true
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                        end
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                        begin
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                                Timeout::timeout( 10 ) do
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                        open( src_uri ) do |f|
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                                                if f.read( 100 * 1024 ).include?( dest_uri ) then
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                                                        debug( "TrackBack has links to me.", DEBUG_FULL )
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                                                        return true
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                                                else
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                                                        debug( "TrackBack dose not have links to me." )
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                                                        comment.show = false
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                                                        return @filter_mode
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                                                end
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                                        end
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                                end
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                        rescue Timeout::Error
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                                debug( "TrackBack source was no response." )
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                                comment.show = false
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                                return @filter_mode
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                        rescue 
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                                debug( "Cannot access to TrackBack source (#{$!})." )
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                                comment.show = false
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                                return @filter_mode
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                        end
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                end
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        end
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end