#!/usr/bin/perl package IkiWiki::Plugin::blogspam; use warnings; use strict; use IkiWiki 3.00; use Encode; my $defaulturl='http://test.blogspam.net:8888/'; sub import { hook(type => "getsetup", id => "blogspam", call => \&getsetup); hook(type => "checkconfig", id => "blogspam", call => \&checkconfig); hook(type => "checkcontent", id => "blogspam", call => \&checkcontent); } sub getsetup () { return plugin => { safe => 1, rebuild => 0, section => "auth", }, 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 checkconfig () { # This is done at checkconfig time because printing an error # if the module is missing when a spam is posted would not # let the admin know about the problem. eval q{ use RPC::XML; use RPC::XML::Client; $RPC::XML::ENCODING = 'utf-8'; }; error $@ if $@; } sub checkcontent (@) { my %params=@_; my $session=$params{session}; my $spec='!admin()'; if (exists $config{blogspam_pagespec} && length $config{blogspam_pagespec}) { $spec.=" and (".$config{blogspam_pagespec}.")"; } my $user=$session->param("name"); return undef unless pagespec_match($params{page}, $spec, (defined $user ? (user => $user) : ()), (defined $session->remote_addr() ? (ip => $session->remote_addr()) : ()), location => $params{page}); my $url=$defaulturl; $url = $config{blogspam_server} if exists $config{blogspam_server}; my $client = RPC::XML::Client->new($url); my @options = split(",", $config{blogspam_options}) if exists $config{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"; my %req=( ip => $session->remote_addr(), comment => encode_utf8(defined $params{diff} ? $params{diff} : $params{content}), subject => encode_utf8(defined $params{subject} ? $params{subject} : ""), name => encode_utf8(defined $params{author} ? $params{author} : ""), link => encode_utf8(exists $params{url} ? $params{url} : ""), options => join(",", @options), site => encode_utf8($config{url}), version => "ikiwiki ".$IkiWiki::version, ); my $res = $client->send_request('testComment', \%req); if (! ref $res || ! defined $res->value) { debug("failed to get response from blogspam server ($url)"); return undef; } elsif ($res->value =~ /^SPAM:(.*)/) { eval q{use Data::Dumper}; debug("blogspam server reports ".$res->value.": ".Dumper(\%req)); return gettext("Sorry, but that looks like spam to blogspam: ").$1; } elsif ($res->value ne 'OK') { debug("blogspam server failure: ".$res->value); return undef; } else { return undef; } } 1