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-rw-r--r--IkiWiki/Plugin/blogspam.pm111
-rw-r--r--debian/changelog2
-rw-r--r--doc/plugins/blogspam.mdwn23
-rw-r--r--doc/todo/anti-spam_protection.mdwn11
-rwxr-xr-xt/syntax.t4
5 files changed, 149 insertions, 2 deletions
diff --git a/IkiWiki/Plugin/blogspam.pm b/IkiWiki/Plugin/blogspam.pm
new file mode 100644
index 000000000..6e68a9856
--- /dev/null
+++ b/IkiWiki/Plugin/blogspam.pm
@@ -0,0 +1,111 @@
+#!/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 <a href=\"http://blogspam.net/\">blogspam</a>: ").$1;
+ }
+ elsif ($res->value ne 'OK') {
+ debug(gettext("blogspam server failure: ").$res->value);
+ return undef;
+ }
+ else {
+ return undef;
+ }
+}
+
+1
diff --git a/debian/changelog b/debian/changelog
index b75fe6afc..cb362d6e2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -20,6 +20,8 @@ ikiwiki (3.02) UNRELEASED; urgency=low
in blogging.
* checkcontent: New hook, can be used to implement arbitrary content
filters, including spam filters.
+ * blogspam: New plugin, adding spam filtering for page editing / comment
+ posting using the BlogSpam.net API.
-- Joey Hess <joeyh@debian.org> Tue, 06 Jan 2009 15:02:52 -0500
diff --git a/doc/plugins/blogspam.mdwn b/doc/plugins/blogspam.mdwn
new file mode 100644
index 000000000..307d4646d
--- /dev/null
+++ b/doc/plugins/blogspam.mdwn
@@ -0,0 +1,23 @@
+[[!template id=plugin name=blogspam author="[[Joey]]"]]
+[[!tag type/auth]]
+
+This plugin adds antispam support to ikiwiki, using the
+[blogspam.net](http://blogspam.net/) API. Both page edits and
+[[comment|comments]] postings can be checked for spam. Currently,
+detected spam is not saved for human review, it is just rejected.
+
+You can control how content is tested via the `blogspam_options`
+setting. By default, the options are configured in a way that is
+appropriate for wiki content. This includes turning off some of the
+more problimatic tests.
+
+The `blogspam_pagespec` setting is a [[ikiwiki/PageSpec]] that can be
+used to configure which pages are checked for spam. The default is to check
+all edits. If you only want to check [[comments]] (not wiki page edits),
+set it to "postcomment(*)".
+
+By default, the blogspam.net server is used to do the spam checking. To
+change this, the `blogspam_server` option can be set to the url for a
+different server implementing the same API. Note that content is sent
+unencrypted over the internet to the server, and the server sees
+the full text of the content.
diff --git a/doc/todo/anti-spam_protection.mdwn b/doc/todo/anti-spam_protection.mdwn
index cb45faee5..b0524be5f 100644
--- a/doc/todo/anti-spam_protection.mdwn
+++ b/doc/todo/anti-spam_protection.mdwn
@@ -17,3 +17,14 @@ Cheers,
You might look at the Wikipedia page on "Spam\_in\_blogs" for more ideas. In particular, would it be possible to force a subset of the pages (by regex, but you'd choose the regex to match those pages which are publicly writable) to use rel="nofollow" in all links.
> I just wanted to leave a link here to the [[todo/require_CAPTCHA_to_edit]] plugin patch. Unfortunately that plugin currently interacts badly with the openid plugin. -- [[Will]]
+
+
+---
+
+Ikiwiki now has a checkcontent hook that plugins can use to see content
+that is being entered and check it for spam/whatever.
+
+There is a blogspam plugin that uses the blogspam.org service
+to check for common spam signatures. --[[Joey]]
+
+[[done]]
diff --git a/t/syntax.t b/t/syntax.t
index d09d17f7f..9d5cbc373 100755
--- a/t/syntax.t
+++ b/t/syntax.t
@@ -5,8 +5,8 @@ use Test::More;
my @progs="ikiwiki.in";
my @libs="IkiWiki.pm";
-# monotone, external, amazon_s3 skipped since they need perl modules
-push @libs, map { chomp; $_ } `find IkiWiki -type f -name \\*.pm | grep -v monotone.pm | grep -v external.pm | grep -v amazon_s3.pm`;
+# monotone, external, blogspam, amazon_s3 skipped since they need perl modules
+push @libs, map { chomp; $_ } `find IkiWiki -type f -name \\*.pm | grep -v monotone.pm | grep -v external.pm | grep -v blogspam.pm | grep -v amazon_s3.pm`;
push @libs, 'IkiWiki/Plugin/skeleton.pm.example';
plan(tests => (@progs + @libs));