X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/54cf5a62cab254e923c8d73ae8bd043a1f33c3b1..93d7368a326b418a32f9ef686450da304186f330:/IkiWiki/Plugin/openid.pm

diff --git a/IkiWiki/Plugin/openid.pm b/IkiWiki/Plugin/openid.pm
index 55b1c4b17..0cb8d6289 100644
--- a/IkiWiki/Plugin/openid.pm
+++ b/IkiWiki/Plugin/openid.pm
@@ -4,71 +4,228 @@ package IkiWiki::Plugin::openid;
 
 use warnings;
 use strict;
-use IkiWiki;
+use IkiWiki 3.00;
 
-sub import { #{{{
-	hook(type => "checkconfig", id => "smiley", call => \&checkconfig);
-	hook(type => "auth", id => "skeleton", call => \&auth);
-} # }}}
+sub import {
+	add_underlay("openid-selector");
+	hook(type => "checkconfig", id => "openid", call => \&checkconfig);
+	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 checkconfig () { #{{{
-	# Currently part of the OpenID code is in CGI.pm, and is enabled by
-	# this setting.
-	# TODO: modularise it all out into this plugin..
-	$config{openid}=1;
-} #}}}
+sub checkconfig () {
+	if ($config{cgi}) {
+		# Intercept normal signin form, so the openid selector
+		# can be displayed.
+		# 
+		# When other auth hooks are registered, give the selector
+		# a reference to the normal signin form.
+		require IkiWiki::CGI;
+		my $real_cgi_signin;
+		if (keys %{$IkiWiki::hooks{auth}} > 1) {
+			$real_cgi_signin=\&IkiWiki::cgi_signin;
+		}
+		inject(name => "IkiWiki::cgi_signin", call => sub ($$) {
+			openid_selector($real_cgi_signin, @_);
+		});
+	}
+}
 
-sub auth ($$) { #{{{
-	my $q=shift;
-	my $session=shift;
+sub getsetup () {
+	return
+		plugin => {
+			safe => 1,
+			rebuild => 0,
+			section => "auth",
+		},
+		openid_realm => {
+			type => "string",
+			description => "url pattern of openid realm (default is cgiurl)",
+			safe => 0,
+			rebuild => 0,
+		},
+		openid_cgiurl => {
+			type => "string",
+			description => "url to ikiwiki cgi to use for openid authentication (default is cgiurl)",
+			safe => 0,
+			rebuild => 0,
+		},
+}
 
-	if (defined $q->param('openid.mode')) {
-		my $csr=getobj($q, $session);
+sub openid_selector {
+	my $real_cgi_signin=shift;
+        my $q=shift;
+        my $session=shift;
 
-		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 $openid_url=$q->param('openid_identifier');
+	my $openid_error;
+
+	if (! load_openid_module()) {
+		if ($real_cgi_signin) {
+			$real_cgi_signin->($q, $session);
+			exit;
 		}
+		error(sprintf(gettext("failed to load openid module: "), @_));
+	}
+	elsif (defined $q->param("action") && $q->param("action") eq "verify") {
+		validate($q, $session, $openid_url, sub {
+			$openid_error=shift;
+		});
+	}
+
+	my $template=IkiWiki::template("openid-selector.tmpl");
+	$template->param(
+		cgiurl => IkiWiki::cgiurl(),
+		(defined $openid_error ? (openid_error => $openid_error) : ()),
+		(defined $openid_url ? (openid_url => $openid_url) : ()),
+		($real_cgi_signin ? (nonopenidform => $real_cgi_signin->($q, $session, 1)) : ()),
+	);
+
+	IkiWiki::printheader($session);
+	print IkiWiki::misctemplate("signin", $template->output);
+	exit;
+}
+
+sub formbuilder_setup (@) {
+	my %params=@_;
+
+	my $form=$params{form};
+	my $session=$params{session};
+	my $cgi=$params{cgi};
+	
+	if ($form->title eq "preferences" &&
+	       IkiWiki::openiduser($session->param("name"))) {
+		$form->field(name => "openid_identifier", disabled => 1,
+			label => htmllink("", "", "ikiwiki/OpenID", noimageinline => 1),
+			value => $session->param("name"), 
+			size => length($session->param("name")), force => 1,
+			fieldset => "login");
+		$form->field(name => "email", type => "hidden");
 	}
-} #}}}
+}
 
-sub validate ($$$$) { #{{{
+sub validate ($$$;$) {
 	my $q=shift;
 	my $session=shift;
-	my $form=shift;
 	my $openid_url=shift;
+	my $errhandler=shift;
 
 	my $csr=getobj($q, $session);
 
 	my $claimed_identity = $csr->claimed_identity($openid_url);
 	if (! $claimed_identity) {
-		# Put the error in the form and fail validation.
-		$form->field(name => "openid_url", comment => $csr->err);
-		return 0;
+		if ($errhandler) {
+			$errhandler->($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 $cgiurl=$config{openid_cgiurl};
+	$cgiurl=$config{cgiurl} if ! defined $cgiurl;
+
+	my $trust_root=$config{openid_realm};
+	$trust_root=$cgiurl if ! defined $trust_root;
+
 	my $check_url = $claimed_identity->check_url(
-		return_to => IkiWiki::cgiurl(
-			do => $form->field("do"),
-			page => $form->field("page"),
-			title => $form->field("title"),
-			from => $form->field("from"),
-			subpage => $form->field("subpage")
-		),
-		trust_root => $config{cgiurl},
+		return_to => "$cgiurl?do=postsignin",
+		trust_root => $trust_root,
 		delayed_return => 1,
 	);
 	# Redirect the user to the OpenID server, which will
-	# eventually bounce them back to auth() above.
+	# eventually bounce them back to auth()
 	IkiWiki::redirect($q, $check_url);
 	exit 0;
-} #}}}
+}
 
-sub getobj ($$) { #{{{
+sub auth ($$) {
+	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, IkiWiki::baseurl(undef));
+		}
+		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'),
+				);
+			}
+			my $nickname;
+			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});
+						if (! defined $nickname &&
+						    $ext->{$field}=~/(.+)@.+/) {
+							$nickname = $1;
+						}
+						last;
+					}
+				}
+				foreach my $field (qw{value.nickname nickname value.fullname fullname value.firstname}) {
+					if (exists $ext->{$field} &&
+					    defined $ext->{$field} &&
+					    length $ext->{$field}) {
+						$nickname=$ext->{$field};
+						last;
+					}
+				}
+			}
+			if (defined $nickname) {
+				$session->param(nickname =>
+					Encode::decode_utf8($nickname));
+			}
+		}
+		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;
 
@@ -87,15 +244,29 @@ sub getobj ($$) { #{{{
 	# Store the secret in the session.
 	my $secret=$session->param("openid_secret");
 	if (! defined $secret) {
-		$secret=$session->param(openid_secret => time);
+		$secret=rand;
+		$session->param(openid_secret => $secret);
 	}
+	
+	my $cgiurl=$config{openid_cgiurl};
+	$cgiurl=$config{cgiurl} if ! defined $cgiurl;
 
 	return Net::OpenID::Consumer->new(
 		ua => $ua,
 		args => $q,
-		consumer_secret => $secret,
-		required_root => $config{cgiurl},
+		consumer_secret => sub { return shift()+$secret },
+		required_root => $cgiurl,
 	);
-} #}}}
+}
+
+sub load_openid_module {
+	# Give up if module is unavailable to avoid needing to depend on it.
+	eval q{use Net::OpenID::Consumer};
+	if ($@) {
+		debug("unable to load Net::OpenID::Consumer, not enabling OpenID login ($@)");
+		return;
+	}
+	return 1;
+}
 
 1