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#!/usr/bin/perl
# OpenID support.
package IkiWiki::Plugin::openid;
use warnings;
use strict;
use IkiWiki 3.00;
sub import {
hook(type => "getopt", id => "openid", call => \&getopt);
hook(type => "getsetup", id => "openid", call => \&getsetup);
hook(type => "auth", id => "openid", call => \&auth);
hook(type => "formbuilder_setup", id => "openid",
call => \&formbuilder_setup, last => 1);
}
sub getopt () {
eval q{use Getopt::Long};
error($@) if $@;
Getopt::Long::Configure('pass_through');
GetOptions("openidsignup=s" => \$config{openidsignup});
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => 0,
section => "auth",
},
openidsignup => {
type => "string",
example => "http://myopenid.com/",
description => "an url where users can signup for an OpenID",
safe => 1,
rebuild => 0,
},
}
sub formbuilder_setup (@) {
my %params=@_;
my $form=$params{form};
my $session=$params{session};
my $cgi=$params{cgi};
if ($form->title eq "signin") {
# Give up if module is unavailable to avoid
# needing to depend on it.
eval q{use Net::OpenID::Consumer};
if ($@) {
debug("unable to load Net::OpenID::Consumer, not enabling OpenID login ($@)");
return;
}
# This avoids it displaying a redundant label for the
# OpenID fieldset.
$form->fieldsets("OpenID");
$form->field(
name => "openid_url",
label => gettext("Log in with")." ".htmllink("", "", "ikiwiki/OpenID", noimageinline => 1),
fieldset => "OpenID",
size => 30,
comment => ($config{openidsignup} ? " | <a href=\"$config{openidsignup}\">".gettext("Get an OpenID")."</a>" : "")
);
# Handle submission of an OpenID as validation.
if ($form->submitted && $form->submitted eq "Login" &&
defined $form->field("openid_url") &&
length $form->field("openid_url")) {
$form->field(
name => "openid_url",
validate => sub {
validate($cgi, $session, shift, $form);
},
);
# Skip all other required fields in this case.
foreach my $field ($form->field) {
next if $field eq "openid_url";
$form->field(name => $field, required => 0,
validate => '/.*/');
}
}
}
elsif ($form->title eq "preferences" &&
IkiWiki::openiduser($session->param("name"))) {
$form->field(name => "openid_url", disabled => 1,
label => htmllink("", "", "ikiwiki/OpenID", noimageinline => 1),
value => $session->param("name"),
size => 50, force => 1,
fieldset => "login");
$form->field(name => "email", type => "hidden");
}
}
sub validate ($$$;$) {
my $q=shift;
my $session=shift;
my $openid_url=shift;
my $form=shift;
my $csr=getobj($q, $session);
my $claimed_identity = $csr->claimed_identity($openid_url);
if (! $claimed_identity) {
if ($form) {
# Put the error in the form and fail validation.
$form->field(name => "openid_url", comment => $csr->err);
return 0;
}
else {
error($csr->err);
}
}
# Ask for client to provide a name and email, if possible.
# Try sreg and ax
if ($claimed_identity->can("set_extension_args")) {
$claimed_identity->set_extension_args(
'http://openid.net/extensions/sreg/1.1',
{
optional => 'email,fullname,nickname',
},
);
$claimed_identity->set_extension_args(
'http://openid.net/srv/ax/1.0',
{
mode => 'fetch_request',
'required' => 'email,fullname,nickname,firstname',
'type.email' => "http://schema.openid.net/contact/email",
'type.fullname' => "http://axschema.org/namePerson",
'type.nickname' => "http://axschema.org/namePerson/friendly",
'type.firstname' => "http://axschema.org/namePerson/first",
},
);
}
my $check_url = $claimed_identity->check_url(
return_to => IkiWiki::cgiurl(do => "postsignin"),
trust_root => $config{cgiurl},
delayed_return => 1,
);
# Redirect the user to the OpenID server, which will
# eventually bounce them back to auth()
IkiWiki::redirect($q, $check_url);
exit 0;
}
sub auth ($$) {
my $q=shift;
my $session=shift;
if (defined $q->param('openid.mode')) {
my $csr=getobj($q, $session);
if (my $setup_url = $csr->user_setup_url) {
IkiWiki::redirect($q, $setup_url);
}
elsif ($csr->user_cancel) {
IkiWiki::redirect($q, $config{url});
}
elsif (my $vident = $csr->verified_identity) {
$session->param(name => $vident->url);
my @extensions;
if ($vident->can("signed_extension_fields")) {
@extensions=grep { defined } (
$vident->signed_extension_fields('http://openid.net/extensions/sreg/1.1'),
$vident->signed_extension_fields('http://openid.net/srv/ax/1.0'),
);
}
foreach my $ext (@extensions) {
foreach my $field (qw{value.email email}) {
if (exists $ext->{$field} &&
defined $ext->{$field} &&
length $ext->{$field}) {
$session->param(email => $ext->{$field});
last;
}
}
foreach my $field (qw{value.nickname nickname value.fullname fullname value.firstname}) {
if (exists $ext->{$field} &&
defined $ext->{$field} &&
length $ext->{$field}) {
$session->param(username => $ext->{$field});
last;
}
}
}
}
else {
error("OpenID failure: ".$csr->err);
}
}
elsif (defined $q->param('openid_identifier')) {
# myopenid.com affiliate support
validate($q, $session, $q->param('openid_identifier'));
}
}
sub getobj ($$) {
my $q=shift;
my $session=shift;
eval q{use Net::OpenID::Consumer};
error($@) if $@;
my $ua;
eval q{use LWPx::ParanoidAgent};
if (! $@) {
$ua=LWPx::ParanoidAgent->new;
}
else {
$ua=LWP::UserAgent->new;
}
# Store the secret in the session.
my $secret=$session->param("openid_secret");
if (! defined $secret) {
$secret=rand;
$session->param(openid_secret => $secret);
}
return Net::OpenID::Consumer->new(
ua => $ua,
args => $q,
consumer_secret => sub { return shift()+$secret },
required_root => $config{cgiurl},
);
}
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