#!/usr/bin/perl package IkiWiki::Plugin::blogspam; use warnings; use strict; use IkiWiki 3.00; require RPC::XML; require RPC::XML::Client; my $defaulturl='http://test.blogspam.net:8888/'; sub import { hook(type => "getsetup", id => "blogspam", call => \&getsetup); hook(type => "checkcontent", id => "blogspam", call => \&checkcontent); } sub getsetup () { return plugin => { safe => 1, rebuild => 0, }, blogspam_pagespec => { type => 'pagespec', example => 'postcomment(*)', description => 'PageSpec of pages to check for spam', link => 'ikiwiki/PageSpec', safe => 1, rebuild => 0, }, blogspam_options => { type => "string", example => "blacklist=1.2.3.4,blacklist=8.7.6.5,max-links=10", description => "options to send to blogspam server", link => "http://blogspam.net/api/testComment.html#options", safe => 1, rebuild => 0, }, blogspam_server => { type => "string", default => $defaulturl, description => "blogspam server XML-RPC url", safe => 1, rebuild => 0, }, } sub checkcontent (@) { my %params=@_; if (exists $config{blogspam_pagespec}) { return undef if ! pagespec_match($params{page}, $config{blogspam_pagespec}, location => $params{page}); } my $url=$defaulturl; $url = $params{blogspam_server} if exists $params{blogspam_server}; my $client = RPC::XML::Client->new($url); my @options = split(",", $params{blogspam_options}) if exists $params{blogspam_options}; # Allow short comments and whitespace-only edits, unless the user # has overridden min-words themselves. push @options, "min-words=0" unless grep /^min-words=/i, @options; # Wiki pages can have a lot of urls, unless the user specifically # wants to limit them. push @options, "exclude=lotsaurls" unless grep /^max-links/i, @options; # Unless the user specified a size check, disable such checking. push @options, "exclude=size" unless grep /^(?:max|min)-size/i, @options; # This test has absurd false positives on words like "alpha" # and "buy". push @options, "exclude=stopwords"; # blogspam API does not have a field for author url, so put it in # the content to be checked. if (exists $params{url}) { $params{content}.="\n".$params{url}; } my $res = $client->send_request('testComment', { ip => $ENV{REMOTE_ADDR}, comment => $params{content}, subject => defined $params{subject} ? $params{subject} : "", name => defined $params{author} ? $params{author} : "", options => join(",", @options), site => $config{url}, version => "ikiwiki ".$IkiWiki::version, }); if (! ref $res || ! defined $res->value) { debug("failed to get response from blogspam server ($url)"); return undef; } elsif ($res->value =~ /^SPAM:(.*)/) { return gettext("Sorry, but that looks like spam to blogspam: ").$1; } elsif ($res->value ne 'OK') { debug(gettext("blogspam server failure: ").$res->value); return undef; } else { return undef; } } 1