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Diffstat (limited to 'IkiWiki/Plugin/blogspam.pm')
| -rw-r--r-- | IkiWiki/Plugin/blogspam.pm | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/IkiWiki/Plugin/blogspam.pm b/IkiWiki/Plugin/blogspam.pm new file mode 100644 index 000000000..e48ed729f --- /dev/null +++ b/IkiWiki/Plugin/blogspam.pm @@ -0,0 +1,130 @@ +#!/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 <a href=\"http://blogspam.net/\">blogspam</a>: ").$1; + } + elsif ($res->value ne 'OK') { + debug("blogspam server failure: ".$res->value); + return undef; + } + else { + return undef; + } +} + +1 |