273 lines
6.6 KiB
Perl
273 lines
6.6 KiB
Perl
#!/usr/bin/perl
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# OpenID support.
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package IkiWiki::Plugin::openid;
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use warnings;
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use strict;
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use IkiWiki 3.00;
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sub import {
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add_underlay("openid-selector");
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hook(type => "checkconfig", id => "openid", call => \&checkconfig);
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hook(type => "getsetup", id => "openid", call => \&getsetup);
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hook(type => "auth", id => "openid", call => \&auth);
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hook(type => "formbuilder_setup", id => "openid",
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call => \&formbuilder_setup, last => 1);
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}
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sub checkconfig () {
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if ($config{cgi}) {
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# Intercept normal signin form, so the openid selector
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# can be displayed.
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#
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# When other auth hooks are registered, give the selector
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# a reference to the normal signin form.
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require IkiWiki::CGI;
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my $real_cgi_signin;
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if (keys %{$IkiWiki::hooks{auth}} > 1) {
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$real_cgi_signin=\&IkiWiki::cgi_signin;
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}
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inject(name => "IkiWiki::cgi_signin", call => sub ($$) {
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openid_selector($real_cgi_signin, @_);
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});
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}
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}
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sub getsetup () {
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return
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plugin => {
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safe => 1,
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rebuild => 0,
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section => "auth",
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},
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openid_realm => {
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type => "string",
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description => "url pattern of openid realm (default is cgiurl)",
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safe => 0,
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rebuild => 0,
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},
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openid_cgiurl => {
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type => "string",
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description => "url to ikiwiki cgi to use for openid authentication (default is cgiurl)",
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safe => 0,
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rebuild => 0,
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},
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}
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sub openid_selector {
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my $real_cgi_signin=shift;
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my $q=shift;
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my $session=shift;
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my $openid_url=$q->param('openid_identifier');
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my $openid_error;
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if (! load_openid_module()) {
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if ($real_cgi_signin) {
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$real_cgi_signin->($q, $session);
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exit;
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}
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error(sprintf(gettext("failed to load openid module: "), @_));
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}
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elsif (defined $q->param("action") && $q->param("action") eq "verify") {
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validate($q, $session, $openid_url, sub {
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$openid_error=shift;
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});
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}
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my $template=IkiWiki::template("openid-selector.tmpl");
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$template->param(
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cgiurl => $config{cgiurl},
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(defined $openid_error ? (openid_error => $openid_error) : ()),
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(defined $openid_url ? (openid_url => $openid_url) : ()),
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($real_cgi_signin ? (nonopenidform => $real_cgi_signin->($q, $session, 1)) : ()),
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);
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IkiWiki::printheader($session);
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print IkiWiki::misctemplate("signin", $template->output);
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exit;
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}
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sub formbuilder_setup (@) {
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my %params=@_;
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my $form=$params{form};
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my $session=$params{session};
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my $cgi=$params{cgi};
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if ($form->title eq "preferences" &&
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IkiWiki::openiduser($session->param("name"))) {
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$form->field(name => "openid_identifier", disabled => 1,
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label => htmllink("", "", "ikiwiki/OpenID", noimageinline => 1),
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value => $session->param("name"),
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size => length($session->param("name")), force => 1,
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fieldset => "login");
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$form->field(name => "email", type => "hidden");
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}
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}
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sub validate ($$$;$) {
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my $q=shift;
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my $session=shift;
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my $openid_url=shift;
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my $errhandler=shift;
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my $csr=getobj($q, $session);
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my $claimed_identity = $csr->claimed_identity($openid_url);
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if (! $claimed_identity) {
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if ($errhandler) {
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$errhandler->($csr->err);
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return 0;
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}
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else {
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error($csr->err);
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}
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}
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# Ask for client to provide a name and email, if possible.
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# Try sreg and ax
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if ($claimed_identity->can("set_extension_args")) {
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$claimed_identity->set_extension_args(
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'http://openid.net/extensions/sreg/1.1',
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{
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optional => 'email,fullname,nickname',
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},
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);
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$claimed_identity->set_extension_args(
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'http://openid.net/srv/ax/1.0',
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{
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mode => 'fetch_request',
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'required' => 'email,fullname,nickname,firstname',
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'type.email' => "http://schema.openid.net/contact/email",
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'type.fullname' => "http://axschema.org/namePerson",
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'type.nickname' => "http://axschema.org/namePerson/friendly",
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'type.firstname' => "http://axschema.org/namePerson/first",
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},
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);
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}
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my $cgiurl=$config{openid_cgiurl};
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$cgiurl=$config{cgiurl} if ! defined $cgiurl;
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my $trust_root=$config{openid_realm};
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$trust_root=$cgiurl if ! defined $trust_root;
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my $check_url = $claimed_identity->check_url(
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return_to => "$cgiurl?do=postsignin",
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trust_root => $trust_root,
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delayed_return => 1,
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);
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# Redirect the user to the OpenID server, which will
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# eventually bounce them back to auth()
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IkiWiki::redirect($q, $check_url);
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exit 0;
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}
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sub auth ($$) {
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my $q=shift;
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my $session=shift;
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if (defined $q->param('openid.mode')) {
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my $csr=getobj($q, $session);
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if (my $setup_url = $csr->user_setup_url) {
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IkiWiki::redirect($q, $setup_url);
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}
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elsif ($csr->user_cancel) {
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IkiWiki::redirect($q, $config{url});
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}
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elsif (my $vident = $csr->verified_identity) {
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$session->param(name => $vident->url);
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my @extensions;
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if ($vident->can("signed_extension_fields")) {
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@extensions=grep { defined } (
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$vident->signed_extension_fields('http://openid.net/extensions/sreg/1.1'),
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$vident->signed_extension_fields('http://openid.net/srv/ax/1.0'),
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);
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}
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my $nickname;
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foreach my $ext (@extensions) {
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foreach my $field (qw{value.email email}) {
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if (exists $ext->{$field} &&
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defined $ext->{$field} &&
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length $ext->{$field}) {
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$session->param(email => $ext->{$field});
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if (! defined $nickname &&
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$ext->{$field}=~/(.+)@.+/) {
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$nickname = $1;
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}
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last;
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}
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}
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foreach my $field (qw{value.nickname nickname value.fullname fullname value.firstname}) {
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if (exists $ext->{$field} &&
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defined $ext->{$field} &&
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length $ext->{$field}) {
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$nickname=$ext->{$field};
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last;
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}
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}
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}
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if (defined $nickname) {
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$session->param(nickname =>
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Encode::decode_utf8($nickname));
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}
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}
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else {
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error("OpenID failure: ".$csr->err);
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}
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}
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elsif (defined $q->param('openid_identifier')) {
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# myopenid.com affiliate support
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validate($q, $session, $q->param('openid_identifier'));
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}
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}
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sub getobj ($$) {
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my $q=shift;
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my $session=shift;
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eval q{use Net::OpenID::Consumer};
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error($@) if $@;
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my $ua;
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eval q{use LWPx::ParanoidAgent};
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if (! $@) {
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$ua=LWPx::ParanoidAgent->new;
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}
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else {
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$ua=LWP::UserAgent->new;
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}
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# Store the secret in the session.
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my $secret=$session->param("openid_secret");
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if (! defined $secret) {
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$secret=rand;
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$session->param(openid_secret => $secret);
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}
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my $cgiurl=$config{openid_cgiurl};
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$cgiurl=$config{cgiurl} if ! defined $cgiurl;
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return Net::OpenID::Consumer->new(
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ua => $ua,
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args => $q,
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consumer_secret => sub { return shift()+$secret },
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required_root => $cgiurl,
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);
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}
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sub load_openid_module {
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# Give up if module is unavailable to avoid needing to depend on it.
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eval q{use Net::OpenID::Consumer};
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if ($@) {
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debug("unable to load Net::OpenID::Consumer, not enabling OpenID login ($@)");
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return;
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}
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return 1;
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}
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1
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