Merge branch 'emailauth'

26 files changed, 781 insertions, 383 deletions

diff --git a/IkiWiki.pm b/IkiWiki.pm
index f414996db..53eb8235b 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -165,7 +165,7 @@ sub getsetup () {
 	default_plugins => {
 		type => "internal",
 		default => [qw{mdwn link inline meta htmlscrubber passwordauth
-				openid signinedit lockedit conditional
+				openid emailauth signinedit lockedit conditional
 				recentchanges parentlinks editpage
 				templatebody}],
 		description => "plugins to enable by default",
@@ -1464,6 +1464,14 @@ sub openiduser ($) {
 	return;
 }
 
+sub emailuser ($) {
+	my $user=shift;
+	if (defined $user && $user =~ m/(.+)@/) {
+		return $1;
+	}
+	return;
+}
+
 sub htmlize ($$$$) {
 	my $page=shift;
 	my $destpage=shift;
diff --git a/IkiWiki/Plugin/comments.pm b/IkiWiki/Plugin/comments.pm
index fb423e713..eaa924e51 100644
--- a/IkiWiki/Plugin/comments.pm
+++ b/IkiWiki/Plugin/comments.pm
@@ -198,7 +198,6 @@ sub preprocess {
 		$commentuser = $params{username};
 
 		my $oiduser = eval { IkiWiki::openiduser($commentuser) };
-
 		if (defined $oiduser) {
 			# looks like an OpenID
 			$commentauthorurl = $commentuser;
@@ -206,6 +205,11 @@ sub preprocess {
 			$commentopenid = $commentuser;
 		}
 		else {
+			my $emailuser = IkiWiki::emailuser($commentuser);
+			if (defined $emailuser) {
+				$commentuser=$emailuser;
+			}
+
 			if (length $config{cgiurl}) {
 				$commentauthorurl = IkiWiki::cgiurl(
 					do => 'goto',
diff --git a/IkiWiki/Plugin/emailauth.pm b/IkiWiki/Plugin/emailauth.pm
new file mode 100644
index 000000000..aa067238f
--- /dev/null
+++ b/IkiWiki/Plugin/emailauth.pm
@@ -0,0 +1,193 @@
+#!/usr/bin/perl
+# Ikiwiki email address as login
+package IkiWiki::Plugin::emailauth;
+
+use warnings;
+use strict;
+use IkiWiki 3.00;
+
+sub import {
+	hook(type => "getsetup", id => "emailauth", "call" => \&getsetup);
+	hook(type => "cgi", id => "emailauth", "call" => \&cgi);
+	hook(type => "formbuilder_setup", id => "emailauth", "call" => \&formbuilder_setup);
+	IkiWiki::loadplugin("loginselector");
+	IkiWiki::Plugin::loginselector::register_login_plugin(
+		"emailauth",
+		\&email_setup,
+		\&email_check_input,
+		\&email_auth,
+	);
+}
+
+sub getsetup () {
+	return
+		plugin => {
+			safe => 1,
+			rebuild => 0,
+			section => "auth",
+		},
+}
+
+sub email_setup ($$) {
+	my $q=shift;
+	my $template=shift;
+
+	return 1;
+}
+
+sub email_check_input ($) {
+	my $cgi=shift;
+	defined $cgi->param('do')
+		&& $cgi->param("do") eq "signin"
+		&& defined $cgi->param('Email_entry')
+		&& length $cgi->param('Email_entry');
+}
+
+# Send login link to email.
+sub email_auth ($$$$) {
+	my $cgi=shift;
+	my $session=shift;
+	my $errordisplayer=shift;
+	my $infodisplayer=shift;
+
+	my $email=$cgi->param('Email_entry');
+	unless ($email =~ /.\@./) {
+		$errordisplayer->(gettext("Invalid email address."));
+		return;
+	}
+
+	# Implicit account creation.
+	my $userinfo=IkiWiki::userinfo_retrieve();
+	if (! exists $userinfo->{$email} || ! ref $userinfo->{$email}) {
+		IkiWiki::userinfo_setall($email, {
+			'email' => $email,
+			'regdate' => time,
+		});
+	}
+
+	my $token=gentoken($email, $session);
+	my $template=template("emailauth.tmpl");
+	$template->param(
+		wikiname => $config{wikiname},
+		# Intentionally using short field names to keep link short.
+		authurl => IkiWiki::cgiurl_abs(
+			'e' => $email,
+			'v' => $token,
+		),
+	);
+	
+	eval q{use Mail::Sendmail};
+	error($@) if $@;
+	sendmail(
+		To => $email,
+		From => "$config{wikiname} admin <".
+			(defined $config{adminemail} ? $config{adminemail} : "")
+			.">",
+		Subject => "$config{wikiname} login",
+		Message => $template->output,
+	) or error(gettext("Failed to send mail"));
+
+	$infodisplayer->(gettext("You have been sent an email, with a link you can open to complete the login process."));
+}
+
+# Finish login process.
+sub cgi ($$) {
+	my $cgi=shift;
+
+	my $email=$cgi->param('e');
+	my $v=$cgi->param('v');
+	if (defined $email && defined $v && length $email && length $v) {
+		my $token=gettoken($email);
+		if ($token eq $v) {
+			cleartoken($email);
+			my $session=getsession($email);
+			IkiWiki::cgi_postsignin($cgi, $session);
+		}
+		elsif (length $token ne length $cgi->param('v')) {
+			error(gettext("Wrong login token length. Please check that you pasted in the complete login link from the email!"));
+		}
+		else {
+			loginfailure();
+		}
+	}
+}
+
+sub formbuilder_setup (@) {
+	my %params=@_;
+	my $form=$params{form};
+	my $session=$params{session};
+
+	if ($form->title eq "preferences" &&
+	    IkiWiki::emailuser($session->param("name"))) {
+		$form->field(name => "email", disabled => 1);
+	}
+}
+
+# Generates the token that will be used in the authurl to log the user in.
+# This needs to be hard to guess, and relatively short. Generating a cgi
+# session id will make it as hard to guess as any cgi session.
+#
+# Store token in userinfo; this allows the user to log in
+# using a different browser session, if it takes a while for the
+# email to get to them.
+#
+# The postsignin value from the session is also stored in the userinfo
+# to allow resuming in a different browser session.
+sub gentoken ($$) {
+	my $email=shift;
+	my $session=shift;
+	eval q{use CGI::Session};
+	error($@) if $@;
+	my $token = CGI::Session->new->id;
+	IkiWiki::userinfo_set($email, "emailauthexpire", time+(60*60*24));
+	IkiWiki::userinfo_set($email, "emailauth", $token);
+	IkiWiki::userinfo_set($email, "emailauthpostsignin", defined $session->param("postsignin") ? $session->param("postsignin") : "");
+	return $token;
+}
+
+# Gets the token, checking for expiry.
+sub gettoken ($) {
+	my $email=shift;
+	my $val=IkiWiki::userinfo_get($email, "emailauth");
+	my $expire=IkiWiki::userinfo_get($email, "emailauthexpire");
+	if (! length $val || time > $expire) {
+		loginfailure();
+	}
+	return $val;
+}
+
+# Generate a session to use after successful login.
+sub getsession ($) {
+	my $email=shift;
+
+	IkiWiki::lockwiki();
+	IkiWiki::loadindex();
+	my $session=IkiWiki::cgi_getsession();
+
+	my $postsignin=IkiWiki::userinfo_get($email, "emailauthpostsignin");
+	IkiWiki::userinfo_set($email, "emailauthpostsignin", "");
+	if (defined $postsignin && length $postsignin) {
+		$session->param(postsignin => $postsignin);
+	}
+
+	$session->param(name => $email);
+	my $nickname=$email;
+	$nickname=~s/@.*//;
+	$session->param(nickname => Encode::decode_utf8($nickname));
+
+	IkiWiki::cgi_savesession($session);
+
+	return $session;
+}
+
+sub cleartoken ($) {
+	my $email=shift;
+	IkiWiki::userinfo_set($email, "emailauthexpire", 0);
+	IkiWiki::userinfo_set($email, "emailauth", "");
+}
+
+sub loginfailure () {
+	error "Bad email authentication token. Please retry login.";
+}
+
+1
diff --git a/IkiWiki/Plugin/loginselector.pm b/IkiWiki/Plugin/loginselector.pm
new file mode 100644
index 000000000..26c80b4ce
--- /dev/null
+++ b/IkiWiki/Plugin/loginselector.pm
@@ -0,0 +1,132 @@
+#!/usr/bin/perl
+package IkiWiki::Plugin::loginselector;
+
+use warnings;
+use strict;
+use IkiWiki 3.00;
+
+# Plugins that provide login methods can register themselves here.
+# Note that the template and js file also have be be modifed to add a new
+# login method.
+our %login_plugins;
+
+sub register_login_plugin ($$$$) {
+	# Same as the name of the plugin that is registering itself as a
+	# login plugin. eg, "openid"
+	my $plugin_name=shift;
+	# This sub is passed a cgi object and a template object which it
+	# can manipulate. It should return true if the plugin can be used
+	# (it might load necessary modules for auth checking, for example).
+	my $plugin_setup=shift;
+	# This sub is passed a cgi object, and should return true
+	# if it looks like the user is logging in using the plugin.
+	my $plugin_check_input=shift;
+	# This sub is passed a cgi object, a session object, an error
+	# display callback, and an info display callback, and should
+	# handle the actual authentication. It can either exit w/o
+	# returning, if it is able to handle auth, or it can pass an
+	# error message to the error display callback to make the
+	# openid selector form be re-disiplayed with an error message
+	# on it.
+	my $plugin_auth=shift;
+	$login_plugins{$plugin_name}={
+		setup => $plugin_setup,
+		check_input => $plugin_check_input,
+		auth => $plugin_auth,
+	};
+}
+
+sub login_selector {
+	my $real_cgi_signin=shift;
+	my $otherform_label=shift;
+	my $q=shift;
+	my $session=shift;
+
+	my $template=IkiWiki::template("login-selector.tmpl");
+
+	foreach my $plugin (keys %login_plugins) {
+		if (! $login_plugins{$plugin}->{setup}->($template)) {
+			delete $login_plugins{$plugin};
+		}
+		else {
+			$template->param("login_selector_$plugin", 1);
+		}
+	}
+
+	foreach my $plugin (keys %login_plugins) {
+		if ($login_plugins{$plugin}->{check_input}->($q)) {
+			$login_plugins{$plugin}->{auth}->($q, $session, sub {
+				$template->param(login_error => shift());
+			}, sub {
+				$template->param(login_info => shift());
+			});
+			last;
+		}
+	}
+
+	$template->param(
+		cgiurl => IkiWiki::cgiurl(),
+		($real_cgi_signin ? (otherform => $real_cgi_signin->($q, $session, 1)) : ()),
+		otherform_label => $otherform_label,
+	);
+
+	IkiWiki::printheader($session);
+	print IkiWiki::cgitemplate($q, "signin", $template->output);
+	exit;
+}
+
+sub import {
+	add_underlay("login-selector");
+	add_underlay("jquery");
+	hook(type => "getsetup", id => "loginselector",  call => \&getsetup);
+	hook(type => "checkconfig", id => "loginselector", call => \&checkconfig);
+	hook(type => "auth", id => "loginselector", call => \&authstub);
+}
+
+sub checkconfig () {
+	if ($config{cgi}) {
+		# Intercept normal signin form, so the login 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;
+		my $otherform_label=gettext("Other");
+		if (keys %{$IkiWiki::hooks{auth}} > 1) {
+			$real_cgi_signin=\&IkiWiki::cgi_signin;
+			# Special case to avoid labeling password auth as
+			# "Other" when it's the only auth plugin not
+			# integrated with the loginselector.
+			my %h=%{$IkiWiki::hooks{auth}};
+			foreach my $p (keys %login_plugins) {
+				delete $h{$p};
+			}
+			delete $h{loginselector};
+			if (keys %h == 1 && exists $h{passwordauth}) {
+				$otherform_label=gettext("Password");
+			}
+		}
+		inject(name => "IkiWiki::cgi_signin", call => sub ($$) {
+			login_selector($real_cgi_signin, $otherform_label, @_);
+		});
+	}
+}
+
+sub getsetup () {
+	return
+		plugin => {
+			# this plugin is safe but only makes sense as a
+			# dependency
+			safe => 0,
+			rebuild => 0,
+		},
+}
+
+sub authstub ($$) {
+	# While this hook is not currently used, it needs to exist
+	# so ikiwiki knows that the wiki supports logins, and will
+	# enable the Preferences page.
+}
+
+1
diff --git a/IkiWiki/Plugin/openid.pm b/IkiWiki/Plugin/openid.pm
index 00652ebb7..cc4b4ba3d 100644
--- a/IkiWiki/Plugin/openid.pm
+++ b/IkiWiki/Plugin/openid.pm
@@ -7,35 +7,17 @@ use strict;
 use IkiWiki 3.00;
 
 sub import {
-	add_underlay("openid-selector");
-	add_underlay("jquery");
-	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 () {
-	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;
-		my $nonopenidform_label=gettext("Other");
-		if (keys %{$IkiWiki::hooks{auth}} > 1) {
-			$real_cgi_signin=\&IkiWiki::cgi_signin;
-			if (keys %{$IkiWiki::hooks{auth}} == 2 && exists $IkiWiki::hooks{auth}->{passwordauth}) {
-				$nonopenidform_label=gettext("Password");
-			}
-		}
-		inject(name => "IkiWiki::cgi_signin", call => sub ($$) {
-			openid_selector($real_cgi_signin, $nonopenidform_label, @_);
-		});
-	}
+	IkiWiki::loadplugin("loginselector");
+	IkiWiki::Plugin::loginselector::register_login_plugin(
+		"openid",
+		\&openid_setup,
+		\&openid_check_input,
+		\&openid_auth,
+	);
 }
 
 sub getsetup () {
@@ -59,40 +41,34 @@ sub getsetup () {
 		},
 }
 
-sub openid_selector {
-	my $real_cgi_signin=shift;
-	my $nonopenidform_label=shift;
-        my $q=shift;
-        my $session=shift;
-
-	my $openid_url=$q->param('openid_identifier');
-	my $openid_error;
+sub openid_setup ($$) {
+	my $q=shift;
+	my $template=shift;
 
-	if (! load_openid_module()) {
-		if ($real_cgi_signin) {
-			$real_cgi_signin->($q, $session);
-			exit;
+	if (load_openid_module()) {
+		my $openid_url=$q->param('openid_identifier');
+		if (defined $openid_url) {
+			$template->param(openid_url => $openid_url);
 		}
-		error(sprintf(gettext("failed to load openid module: "), @_));
+		return 1;
 	}
-	elsif (defined $q->param("action") && $q->param("action") eq "verify") {
-		validate($q, $session, $openid_url, sub {
-			$openid_error=shift;
-		});
+	else {
+		return 0;
 	}
+}
 
-	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)) : ()),
-		nonopenidform_label => $nonopenidform_label,
-	);
+sub openid_check_input ($) {
+	my $q=shift;
+	my $openid_url=$q->param('openid_identifier');
+	defined $q->param("action") && $q->param("action") eq "verify" && defined $openid_url && length $openid_url;
+}
 
-	IkiWiki::printheader($session);
-	print IkiWiki::cgitemplate($q, "signin", $template->output);
-	exit;
+sub openid_auth ($$$$) {
+	my $q=shift;
+	my $session=shift;
+	my $errordisplayer=shift;
+	my $openid_url=$q->param('openid_identifier');
+	validate($q, $session, $openid_url, $errordisplayer);
 }
 
 sub formbuilder_setup (@) {
diff --git a/IkiWiki/Plugin/passwordauth.pm b/IkiWiki/Plugin/passwordauth.pm
index 0cf2a26ea..7c01bb3ff 100644
--- a/IkiWiki/Plugin/passwordauth.pm
+++ b/IkiWiki/Plugin/passwordauth.pm
@@ -277,7 +277,7 @@ sub formbuilder_setup (@) {
 	}
 	elsif ($form->title eq "preferences") {
 		my $user=$session->param("name");
-		if (! IkiWiki::openiduser($user)) {
+		if (! IkiWiki::openiduser($user) && ! IkiWiki::emailuser($user)) {
 			$form->field(name => "name", disabled => 1, 
 				value => $user, force => 1,
 				fieldset => "login");
diff --git a/IkiWiki/Setup/Automator.pm b/IkiWiki/Setup/Automator.pm
index a8b04d966..9239974ad 100644
--- a/IkiWiki/Setup/Automator.pm
+++ b/IkiWiki/Setup/Automator.pm
@@ -154,31 +154,33 @@ sub import (@) {
 	foreach my $admin (@{$config{adminuser}}) {
 		next if defined IkiWiki::openiduser($admin);
 		
-		# Prompt for password w/o echo.
-		my ($password, $password2);
-		system('stty -echo 2>/dev/null');
-		local $|=1;
-		print "\n\nCreating wiki admin $admin ...\n";
-		for (;;) {
-			print "Choose a password: ";
-			chomp($password=<STDIN>);
-			print "\n";
-			print "Confirm password: ";
-			chomp($password2=<STDIN>);
-
-			last if $password2 eq $password;
-
-			print "Password mismatch.\n\n";
-		}
-		print "\n\n\n";
-		system('stty sane 2>/dev/null');
+		if (! defined IkiWiki::emailuser($admin)) {
+			# Prompt for password w/o echo.
+			my ($password, $password2);
+			system('stty -echo 2>/dev/null');
+			local $|=1;
+			print "\n\nCreating wiki admin $admin ...\n";
+			for (;;) {
+				print "Choose a password: ";
+				chomp($password=<STDIN>);
+				print "\n";
+				print "Confirm password: ";
+				chomp($password2=<STDIN>);
+	
+				last if $password2 eq $password;
+	
+				print "Password mismatch.\n\n";
+			}
+			print "\n\n\n";
+			system('stty sane 2>/dev/null');
 
-		if (IkiWiki::userinfo_setall($admin, { regdate => time }) &&
-		    IkiWiki::Plugin::passwordauth::setpassword($admin, $password)) {
-			IkiWiki::userinfo_set($admin, "email", $config{adminemail}) if defined $config{adminemail};
-		}
-		else {
-			error("problem setting up $admin user");
+			if (IkiWiki::userinfo_setall($admin, { regdate => time }) &&
+			    IkiWiki::Plugin::passwordauth::setpassword($admin, $password)) {
+				IkiWiki::userinfo_set($admin, "email", $config{adminemail}) if defined $config{adminemail};
+			}
+			else {
+				error("problem setting up $admin user");
+			}
 		}
 	}
 	
diff --git a/auto.setup b/auto.setup
index 843b4193a..1bcac36cb 100644
--- a/auto.setup
+++ b/auto.setup
@@ -18,7 +18,7 @@ our $wikiname_short=IkiWiki::Setup::Automator::sanitize_wikiname($wikiname);
 our $rcs=IkiWiki::Setup::Automator::ask(
 	gettext("What revision control system to use?"), "git");
 our $admin=IkiWiki::Setup::Automator::ask(
-	gettext("Which user (wiki account or openid) will be admin?"), $ENV{USER});
+	gettext("Which user (wiki account, openid, or email) will be admin?"), $ENV{USER});
 use Net::Domain q{hostfqdn};
 our $domain=hostfqdn() || IkiWiki::Setup::Automator::ask(
 	gettext("What is the domain name of the web server?"), "");
diff --git a/debian/changelog b/debian/changelog
index 4d8b589cf..45801567f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,10 +1,14 @@
 ikiwiki (3.20150330) UNRELEASED; urgency=medium
 
+  * New emailauth plugin lets users log in, without any registration,
+    by simply clicking on a link in an email.
   * Re-remove google from openid selector; their openid provider is
     gone for good.
-  * When openid and passwordauth are the only enabled auth plugins,
-    make the openid selector display "Password" instead of "Other",
-    so users are more likely to click on it when they don't have an openid.
+  * Make the openid selector display "Password" instead of "Other"
+    when appropriate, so users are more likely to click on it when
+    they don't have an openid.
+  * Converted openid-selector into a more generic loginselector helper
+    plugin.
 
  -- Joey Hess <id@joeyh.name>  Tue, 28 Apr 2015 12:24:08 -0400
 
diff --git a/debian/copyright b/debian/copyright
index a73d1ccff..35fadf56b 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -201,20 +201,20 @@ Comment:
  Republished with permission.
 License: GPL-2+
 
-Files: underlays/openid-selector/ikiwiki/openid/*
+Files: underlays/openid-selector/ikiwiki/login-selector/*
 Copyright: © 2008-2010 andyjm, david.j.boden
 Comment: 
  From http://code.google.com/p/openid-selector/
 License: BSD-2-clause
 
-Files: underlays/openid-selector/ikiwiki/openid/goa-*
+Files: underlays/openid-selector/ikiwiki/login-selector/goa-*
 Copyright:
  © 2011 Red Hat, Inc.
 License: LGPL-2.1+
 Comment:
  taken from data/icons/16x16/ in gnome-online-accounts git
 
-Files: underlays/openid-selector/ikiwiki/openid/wordpress.png
+Files: underlays/openid-selector/ikiwiki/login-selector/wordpress.png
 Copyright:
  © 2003-2013 "the contributors"
 License: GPL-2+
@@ -226,9 +226,8 @@ Files:
  icons/aol.svg
  icons/livejournal.svg
  icons/verisign.svg
- underlays/openid-selector/ikiwiki/openid/aol.png
- underlays/openid-selector/ikiwiki/openid/livejournal.png
- underlays/openid-selector/ikiwiki/openid/verisign.png
+ underlays/openid-selector/ikiwiki/login-selector/aol.png
+ underlays/openid-selector/ikiwiki/login-selector/verisign.png
 Copyright:
  © 2014 Simon McVittie
 License: other
diff --git a/doc/basewiki.mdwn b/doc/basewiki.mdwn
index 8392884eb..b4aa60c78 100644
--- a/doc/basewiki.mdwn
+++ b/doc/basewiki.mdwn
@@ -10,7 +10,7 @@ It currently includes these pages:
 * [[templates]]
 * [[ikiwiki/formatting]]
 * [[ikiwiki/markdown]]
-* [[ikiwiki/openid]]
+* [[ikiwiki/login-selector]]
 * [[ikiwiki/pagespec]]
 * [[ikiwiki/directive]]
 * [[ikiwiki/subpage]]
diff --git a/doc/plugins/emailauth.pm b/doc/plugins/emailauth.pm
new file mode 100644
index 000000000..8cb060e93
--- /dev/null
+++ b/doc/plugins/emailauth.pm
@@ -0,0 +1,17 @@
+[[!template id=plugin name=emailauth core=1 author="[[Joey]]"]]
+[[!tag type/auth]]
+
+This plugin lets users log into ikiwiki using any email address. To complete
+the login, a one-time-use link is emailed to the user, and they can simply
+open that link in their browser.
+
+It is enabled by default, but can be turned off if you want to only use
+some other form of authentication, such as [[passwordauth]] or [[openid]].
+
+Users who have logged in using emailauth will have their email address used as
+their username. In places where the username is displayed, like the
+RecentChanges page, the domain will be omitted, to avoid exposing the
+user's email address.
+
+This plugin needs the [[!cpan Mail::SendMail]] perl module installed,
+and able to send outgoing email.
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index c3f531b66..95f4a39df 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -458,6 +458,9 @@ object's "name" parameter to the authenticated user's name. Note that
 if the name is set to the name of a user who is not registered,
 a basic registration of the user will be automatically performed.
 
+Auth plugins can use the loginselector helper plugin to let the user
+select which authentication method to use.
+
 ### <a name="sessioncgi">sessioncgi</a>
 
 	hook(type => "sessioncgi", id => "foo", call => \&sessioncgi);
diff --git a/doc/style.css b/doc/style.css
index fe1eb903d..f0846c0d6 100644
--- a/doc/style.css
+++ b/doc/style.css
@@ -465,40 +465,40 @@ li.L8 { list-style: upper-alpha; }
 	display: none;
 }
 
-/* openid selector */
-#openid_choice {
+/* login selector */
+#login_choice {
 	display: none;
 }
-#openid_input_area {
+#login_input_area {
 	clear: both;
 	padding: 10px;
 }
-#openid_btns, #openid_btns br {
+#login_btns, #login_btns br {
 	clear: both;
 }
-#openid_highlight {
+#login_highlight {
 	background-color: black;
 	float: left;
 }
-.openid_large_btn {
+.login_large_btn {
 	padding: 1em 1.5em;
 	border: 1px solid #DDD;
 	margin: 3px;
 	float: left;
 }
-.openid_small_btn {
+.login_small_btn {
 	padding: 4px 4px;
 	border: 1px solid #DDD;
 	margin: 3px;
 	float: left;
 }
-a.openid_large_btn:focus {
+a.login_large_btn:focus {
 	outline: none;
 }
-a.openid_large_btn:focus {
+a.login_large_btn:focus {
 	outline-style: none;
 }
-.openid_selected {
+.login_selected {
 	border: 4px solid #DDD;
 }
 
diff --git a/doc/templates.mdwn b/doc/templates.mdwn
index 80372fcb7..c45316e44 100644
--- a/doc/templates.mdwn
+++ b/doc/templates.mdwn
@@ -92,8 +92,9 @@ Here is a full list of the template files used:
 * `editpage.tmpl`, `editconflict.tmpl`, `editcreationconflict.tmpl`,
   `editfailedsave.tmpl`, `editpagegone.tmpl`, `pocreatepage.tmpl`,
   `editcomment.tmpl` `commentmoderation.tmpl`, `renamesummary.tmpl`,
-  `passwordmail.tmpl`, `openid-selector.tmpl`, `revert.tmpl` - Parts of ikiwiki's user
-  interface; do not normally need to be customised.
+  `passwordmail.tmpl`, `emailauth.tmpl, `login-selector.tmpl`, 
+  `revert.tmpl` - Parts of ikiwiki's user interface; do not normally need
+  to be customised.
 
 
 [[!meta robots="noindex, follow"]]
diff --git a/doc/wikiicons/emaillogin.png b/doc/wikiicons/emaillogin.png
new file mode 100644
index 000000000..1b16befd6
--- /dev/null
+++ b/doc/wikiicons/emaillogin.png
diff --git a/templates/emailauth.tmpl b/templates/emailauth.tmpl
new file mode 100644
index 000000000..55614068d
--- /dev/null
+++ b/templates/emailauth.tmpl
@@ -0,0 +1,10 @@
+To log into <TMPL_VAR WIKINAME>, just open the following link:
+
+<TMPL_VAR AUTHURL>
+
+This link can only be used once to log in, and will expire in one day.
+
+(Please disregard this email if you were not trying to log in.)
+
+-- 
+ikiwiki
diff --git a/templates/login-selector.tmpl b/templates/login-selector.tmpl
new file mode 100644
index 000000000..3e7045c63
--- /dev/null
+++ b/templates/login-selector.tmpl
@@ -0,0 +1,65 @@
+<script type="text/javascript" src="ikiwiki/jquery.min.js"></script>
+<script type="text/javascript" src="ikiwiki/login-selector/login-selector.js"></script>
+<script type="text/javascript">
+$(document).ready(function() {
+	selector.init(
+		'openid_identifier',
+		{
+			<TMPL_IF LOGIN_SELECTOR_OPENID>'openid': 1,</TMPL_IF>
+			<TMPL_IF LOGIN_SELECTOR_EMAILAUTH>'email': 1,</TMPL_IF>
+		},
+		'<TMPL_IF OTHERFORM>otherform</TMPL_IF>',
+		'<TMPL_VAR OTHERFORM_LABEL>'
+	);
+});
+</script>
+
+<form action="<TMPL_VAR CGIURL>" method="get" id="login_selector_form">
+	<div>
+		<script>
+		$('fieldset').append("<legend>Select login method</legend>");
+		</script>
+		
+		<input type="hidden" name="do" value="signin" />
+		<input type="hidden" name="action" value="verify" />
+		<div id="login_choice">
+			<div id="login_btns"></div>
+		</div>
+
+		<div id="login_input_area">
+		<TMPL_IF LOGIN_SELECTOR_OPENID>
+			<div>
+				<h3>OpenId login:</h3>
+				<label for="openid_identifier" class="block">Enter your OpenID:</label>
+				<input id="openid_identifier" name="openid_identifier" type="text" value="<TMPL_VAR ESCAPE=HTML OPENID_URL>"/>
+				<input id="openid_submit" type="submit" value="Login"/>
+			</div>
+		</TMPL_IF>
+		<TMPL_IF LOGIN_SELECTOR_EMAILAUTH>
+			<div>
+				<h3>Email login:</h3>
+				<label for="email_address" class="block">Enter your email address:</label>
+				<input id="email_address" name="Email_entry" type="text" value="<TMPL_VAR ESCAPE=HTML EMAIL_ADDRESS>"/>
+				<input id="email_submit" type="submit" value="Login"/>
+			</div>
+		</TMPL_IF>
+		</div>
+
+		<TMPL_IF LOGIN_ERROR>
+		<div class="error"><TMPL_VAR LOGIN_ERROR></div>
+		</TMPL_IF>
+		<TMPL_IF LOGIN_INFO>
+		<TMPL_VAR LOGIN_INFO>
+		</TMPL_IF>
+	</div>
+</form>
+
+<div id="otherform">
+<TMPL_IF OTHERFORM>
+<br />
+<noscript>
+<h3><TMPL_VAR OTHERFORM_LABEL> login:</h3>
+</noscript>
+</TMPL_IF>
+<TMPL_VAR OTHERFORM>
+</div>
diff --git a/templates/openid-selector.tmpl b/templates/openid-selector.tmpl
deleted file mode 100644
index 95ba086fe..000000000
--- a/templates/openid-selector.tmpl
+++ /dev/null
@@ -1,43 +0,0 @@
-<script type="text/javascript" src="ikiwiki/jquery.min.js"></script>
-<script type="text/javascript" src="ikiwiki/openid/openid-jquery.js"></script>
-<script type="text/javascript">
-$(document).ready(function() {
-	openid.init('openid_identifier','<TMPL_IF NONOPENIDFORM>nonopenidform</TMPL_IF>', '<TMPL_VAR NONOPENIDFORM_LABEL>');
-});
-</script>
-
-<noscript>
-<h2>OpenID:</h2>
-</noscript>
-
-<form action="<TMPL_VAR CGIURL>" method="get" id="openid_form">
-	<fieldset>
-		<script>
-		$('fieldset').append("<legend>Select login method</legend>");
-		</script>
-		
-		<input type="hidden" name="do" value="signin" />
-		<input type="hidden" name="action" value="verify" />
-		<div id="openid_choice">
-			<div id="openid_btns"></div>
-		</div>
-		<div id="openid_input_area">
-			<label for="openid_identifier" class="block">Enter your OpenID:</label>
-			<input id="openid_identifier" name="openid_identifier" type="text" value="<TMPL_VAR ESCAPE=HTML OPENID_URL>"/>
-			<input id="openid_submit" type="submit" value="Login"/>
-		</div>
-		<TMPL_IF OPENID_ERROR>
-		<div class="error"><TMPL_VAR OPENID_ERROR></div>
-		</TMPL_IF>
-	</fieldset>
-</form>
-
-<div id="nonopenidform">
-<TMPL_IF NONOPENIDFORM>
-<br />
-<noscript>
-<h2><TMPL_VAR NONOPENIDFORM_LABEL>:</h2>
-</noscript>
-</TMPL_IF>
-<TMPL_VAR NONOPENIDFORM>
-</div>
diff --git a/underlays/login-selector/ikiwiki/login-selector/aol.png b/underlays/login-selector/ikiwiki/login-selector/aol.png
new file mode 100644
index 000000000..d47f5fa54
--- /dev/null
+++ b/underlays/login-selector/ikiwiki/login-selector/aol.png
diff --git a/underlays/login-selector/ikiwiki/login-selector/goa-account-flickr.png b/underlays/login-selector/ikiwiki/login-selector/goa-account-flickr.png
new file mode 100644
index 000000000..5321642f6
--- /dev/null
+++ b/underlays/login-selector/ikiwiki/login-selector/goa-account-flickr.png
diff --git a/underlays/openid-selector/ikiwiki/openid/goa-account-yahoo.png b/underlays/login-selector/ikiwiki/login-selector/goa-account-yahoo.png
index 51e1c119b..51e1c119b 100644
--- a/underlays/openid-selector/ikiwiki/openid/goa-account-yahoo.png
+++ b/underlays/login-selector/ikiwiki/login-selector/goa-account-yahoo.png
diff --git a/underlays/login-selector/ikiwiki/login-selector/login-selector.js b/underlays/login-selector/ikiwiki/login-selector/login-selector.js
new file mode 100644
index 000000000..71ae0466e
--- /dev/null
+++ b/underlays/login-selector/ikiwiki/login-selector/login-selector.js
@@ -0,0 +1,264 @@
+/*
+Based on the Simple OpenID Plugin
+http://code.google.com/p/openid-selector/
+
+This code is licenced under the New BSD License.
+*/
+
+var selections_email_large = {
+    email: {
+        name: 'Email',
+	icon: 'wikiicons/email.png',
+        label: 'Enter your email address:',
+        url: null
+    }
+};
+var selections_openid_large = {
+    openid: {
+        name: 'OpenID',
+	icon: 'wikiicons/openidlogin-bg.gif',
+        label: 'Enter your OpenID:',
+        url: null
+    }
+};
+var selections_openid_small = {
+    verisign: {
+        name: 'Verisign',
+        icon: 'ikiwiki/login-selector/verisign.png',
+        label: 'Enter your Verisign username:',
+        url: 'http://{username}.pip.verisignlabs.com/'
+    },
+    yahoo: {
+        name: 'Yahoo',
+        icon: 'ikiwiki/login-selector/goa-account-yahoo.png',
+        url: 'http://me.yahoo.com/'
+    },
+    flickr: {
+       name: 'Flickr',        
+       icon: 'ikiwiki/login-selector/goa-account-flickr.png',
+       label: 'Enter your Flickr username:',
+       url: 'http://flickr.com/photos/{username}/'
+    },
+    wordpress: {
+        name: 'Wordpress',
+       icon: 'ikiwiki/login-selector/wordpress.png',
+        label: 'Enter your Wordpress.com username:',
+        url: 'http://{username}.wordpress.com/'
+    },
+    aol: {
+        name: 'AOL',     
+        icon: 'ikiwiki/login-selector/aol.png',
+        label: 'Enter your AOL username:',
+        url: 'http://openid.aol.com/{username}'
+    }
+};
+var selections = $.extend({}, selections_email_large, selections_openid_large, selections_openid_small);
+
+var selector = {
+
+	ajaxHandler: null,
+	cookie_expires: 6*30,	// 6 months.
+	cookie_name: 'openid_selection', // historical name
+	cookie_path: '/',
+	
+	img_path: 'images/',
+	
+	input_id: null,
+	selection_url: null,
+	selection_id: null,
+	othersignin_id: null,
+	
+    init: function(input_id, login_methods, othersignin_id, othersignin_label) {
+        
+        var selector_btns = $('#login_btns');
+        
+        this.input_id = input_id;
+        
+        $('#login_choice').show();
+        $('#login_input_area').empty();
+        
+        // add box for each selection
+	if (login_methods['openid']) {
+	        for (id in selections_openid_large) {
+			selector_btns.append(this.getBoxHTML(selections_openid_large[id], 'large'));
+		}
+	}
+	if (login_methods['email']) {
+		for (id in selections_email_large) {
+			selector_btns.prepend(this.getBoxHTML(selections_email_large[id], 'large'));
+		}
+	}
+
+	if (othersignin_label != "") {
+		this.othersignin_label=othersignin_label;
+	}
+	else {
+		this.othersignin_label="other";
+	}
+	if (othersignin_id != "") {
+		this.othersignin_id=othersignin_id;
+           	selector_btns.prepend(
+        		'<a href="javascript: selector.signin(\'othersignin\');"' +
+        		' style="background: #FFF" ' +
+        		'class="othersignin login_large_btn">' +
+			'<img alt="" width="16" height="16" src="favicon.ico" />' +
+			' ' + this.othersignin_label +
+			'</a>'
+		);
+		$('#'+this.othersignin_id).hide();
+	}
+
+        if (login_methods['openid'] && selections_openid_small) {
+        	selector_btns.append('<br/>');
+        	
+	        for (id in selections_openid_small) {
+	           	selector_btns.append(this.getBoxHTML(selections_openid_small[id], 'small'));
+	        }
+        }
+        
+        $('#login_selector_form').submit(this.submit);
+        
+        var box_id = this.readCookie();
+        if (box_id) {
+        	this.signin(box_id, true);
+        }
+    },
+    getBoxHTML: function(selection, box_size) {
+	var label="";
+	var title=""
+	if (box_size == 'large') {
+		label=' ' + selection["name"];
+	}
+	else {
+		title=' title="'+selection["name"]+'"';
+	}
+        var box_id = selection["name"].toLowerCase();
+        return '<a' + title +' href="javascript: selector.signin(\''+ box_id +'\');"' +
+        		' style="background: #FFF" ' + 
+        		'class="' + box_id + ' login_' + box_size + '_btn">' +
+			'<img alt="" width="16" height="16" src="' + selection["icon"] + '" />' +
+			label +
+			'</a>';
+    
+    },
+    /* selection image click */
+    signin: function(box_id, onload) {
+
+	if (box_id == 'othersignin') {
+	    	this.highlight(box_id);
+		$('#login_input_area').empty();
+		$('#'+this.othersignin_id).show();
+		this.setCookie(box_id);
+		return;
+	}
+	else {
+		if (this.othersignin_id) {
+			$('#'+this.othersignin_id).hide();
+		}
+	}
+
+    	var selection = selections[box_id];
+  		if (! selection) {
+  			return;
+  		}
+		
+		this.highlight(box_id);
+		
+		this.selection_id = box_id;
+		this.selection_url = selection['url'];
+		
+		// prompt user for input?
+		if (selection['label']) {
+			this.setCookie(box_id);
+			this.useInputBox(selection);
+		} else {
+			this.setCookie('');
+			$('#login_input_area').empty();
+			if (! onload) {
+				$('#login_selector_form').submit();
+			}
+		}
+    },
+    /* Sign-in button click */
+    submit: function() {
+    	var url = selector.selection_url; 
+    	if (url) {
+    		url = url.replace('{username}', $('#entry').val());
+    		selector.setOpenIdUrl(url);
+    	}
+	else {
+    		selector.setOpenIdUrl("");
+	}
+    	if (selector.ajaxHandler) {
+    		selector.ajaxHandler(selector.selection_id, document.getElementById(selector.input_id).value);
+    		return false;
+    	}
+    	return true;
+    },
+    setOpenIdUrl: function (url) {
+    
+	var hidden = $('#'+this.input_id);
+	if (hidden.length > 0) {
+		hidden.value = url;
+    	} else {
+		$('#login_selector_form').append('<input style="display:none" id="' + this.input_id + '" name="' + this.input_id + '" value="'+url+'"/>');
+    	}
+    },
+    highlight: function (box_id) {
+    	
+    	// remove previous highlight.
+    	var highlight = $('#login_highlight');
+    	if (highlight) {
+    		highlight.replaceWith($('#login_highlight a')[0]);
+    	}
+    	// add new highlight.
+    	$('.'+box_id).wrap('<div id="login_highlight"></div>');
+    },
+    setCookie: function (value) {
+    
+		var date = new Date();
+		date.setTime(date.getTime()+(this.cookie_expires*24*60*60*1000));
+		var expires = "; expires="+date.toGMTString();
+		
+		document.cookie = this.cookie_name+"="+value+expires+"; path=" + this.cookie_path;
+    },
+    readCookie: function () {
+		var nameEQ = this.cookie_name + "=";
+		var ca = document.cookie.split(';');
+		for(var i=0;i < ca.length;i++) {
+			var c = ca[i];
+			while (c.charAt(0)==' ') c = c.substring(1,c.length);
+			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
+		}
+		return null;
+    },
+    useInputBox: function (selection) {
+   	
+		var input_area = $('#login_input_area');
+		
+		var html = '';
+		var id = selection['name']+'_entry';
+		var value = '';
+		var label = selection['label'];
+		var style = '';
+		
+		if (selection['name'] == 'OpenID') {
+			id = this.input_id;
+			value = '';
+			style = 'background:#FFF url(wikiicons/openidlogin-bg.gif) no-repeat scroll 0 50%; padding-left:18px;';
+		}
+		if (label) {
+			html = '<label for="'+ id +'" class="block">' + label + '</label>';
+		}
+		html += '<input id="'+id+'" type="text" style="'+style+'" name="'+id+'" value="'+value+'" />' + 
+					'<input id="selector_submit" type="submit" value="Login"/>';
+		
+		input_area.empty();
+		input_area.append(html);
+
+		$('#'+id).focus();
+    },
+    setAjaxHandler: function (ajaxFunction) {
+    	this.ajaxHandler = ajaxFunction;
+    }
+};
diff --git a/underlays/openid-selector/ikiwiki/openid/verisign.png b/underlays/login-selector/ikiwiki/login-selector/verisign.png
index 5120812ed..5120812ed 100644
--- a/underlays/openid-selector/ikiwiki/openid/verisign.png
+++ b/underlays/login-selector/ikiwiki/login-selector/verisign.png
diff --git a/underlays/login-selector/ikiwiki/login-selector/wordpress.png b/underlays/login-selector/ikiwiki/login-selector/wordpress.png
new file mode 100644
index 000000000..96e08bd99
--- /dev/null
+++ b/underlays/login-selector/ikiwiki/login-selector/wordpress.png
diff --git a/underlays/openid-selector/ikiwiki/openid/openid-jquery.js b/underlays/openid-selector/ikiwiki/openid/openid-jquery.js
deleted file mode 100644
index 2c72f19fb..000000000
--- a/underlays/openid-selector/ikiwiki/openid/openid-jquery.js
+++ /dev/null
@@ -1,237 +0,0 @@
-/*
-Simple OpenID Plugin
-http://code.google.com/p/openid-selector/
-
-This code is licenced under the New BSD License.
-*/
-
-var providers_large = {
-    verisign: {
-        name: 'Verisign',
-        icon: 'ikiwiki/openid/verisign.png',
-        label: 'Enter your Verisign username:',
-        url: 'http://{username}.pip.verisignlabs.com/'
-    },
-    yahoo: {
-        name: 'Yahoo',      
-        icon: 'ikiwiki/openid/goa-account-yahoo.png',
-        url: 'http://me.yahoo.com/'
-    },    
-    openid: {
-        name: 'OpenID',     
-	icon: 'wikiicons/openidlogin-bg.gif',
-        label: 'Enter your OpenID:',
-        url: null
-    }
-};
-var providers_small = {
-};
-var providers = $.extend({}, providers_large, providers_small);
-
-var openid = {
-
-	demo: false,
-	ajaxHandler: null,
-	cookie_expires: 6*30,	// 6 months.
-	cookie_name: 'openid_provider',
-	cookie_path: '/',
-	
-	img_path: 'images/',
-	
-	input_id: null,
-	provider_url: null,
-	provider_id: null,
-	localsignin_id: null,
-	
-    init: function(input_id, localsignin_id, localsignin_label) {
-        
-        var openid_btns = $('#openid_btns');
-        
-        this.input_id = input_id;
-        
-        $('#openid_choice').show();
-        $('#openid_input_area').empty();
-        
-        // add box for each provider
-        for (id in providers_large) {
-           	openid_btns.append(this.getBoxHTML(providers_large[id], 'large'));
-        }
-	if (localsignin_label != "") {
-		this.localsignin_label=localsignin_label;
-	}
-	else {
-		this.localsignin_label="other";
-	}
-	if (localsignin_id != "") {
-		this.localsignin_id=localsignin_id;
-           	openid_btns.append(
-        		'<a href="javascript: openid.signin(\'localsignin\');"' +
-        		' style="background: #FFF" ' +
-        		'class="localsignin openid_large_btn">' +
-			'<img alt="" width="16" height="16" src="favicon.ico" />' +
-			' ' + this.localsignin_label +
-			'</a>'
-		);
-		$('#'+this.localsignin_id).hide();
-	}
-
-        if (providers_small) {
-        	openid_btns.append('<br/>');
-        	
-	        for (id in providers_small) {
-	        
-	           	openid_btns.append(this.getBoxHTML(providers_small[id], 'small'));
-	        }
-        }
-        
-        $('#openid_form').submit(this.submit);
-        
-        var box_id = this.readCookie();
-        if (box_id) {
-        	this.signin(box_id, true);
-        }
-    },
-    getBoxHTML: function(provider, box_size) {
-	var label="";
-	var title=""
-	if (box_size == 'large') {
-		label=' ' + provider["name"];
-	}
-	else {
-		title=' title="'+provider["name"]+'"';
-	}
-        var box_id = provider["name"].toLowerCase();
-        return '<a' + title +' href="javascript: openid.signin(\''+ box_id +'\');"' +
-        		' style="background: #FFF" ' + 
-        		'class="' + box_id + ' openid_' + box_size + '_btn">' +
-			'<img alt="" width="16" height="16" src="' + provider["icon"] + '" />' +
-			label +
-			'</a>';
-    
-    },
-    /* Provider image click */
-    signin: function(box_id, onload) {
-
-	if (box_id == 'localsignin') {
-	    	this.highlight(box_id);
-		$('#openid_input_area').empty();
-		$('#'+this.localsignin_id).show();
-		this.setCookie(box_id);
-		return;
-	}
-	else {
-		if (this.localsignin_id) {
-			$('#'+this.localsignin_id).hide();
-		}
-	}
-
-    	var provider = providers[box_id];
-  		if (! provider) {
-  			return;
-  		}
-		
-		this.highlight(box_id);
-		
-		this.provider_id = box_id;
-		this.provider_url = provider['url'];
-		
-		// prompt user for input?
-		if (provider['label']) {
-			this.setCookie(box_id);
-			this.useInputBox(provider);
-		} else {
-			this.setCookie('');
-			$('#openid_input_area').empty();
-			if (! onload) {
-				$('#openid_form').submit();
-			}
-		}
-    },
-    /* Sign-in button click */
-    submit: function() {
-        
-    	var url = openid.provider_url; 
-    	if (url) {
-    		url = url.replace('{username}', $('#openid_username').val());
-    		openid.setOpenIdUrl(url);
-    	}
-    	if(openid.ajaxHandler) {
-    		openid.ajaxHandler(openid.provider_id, document.getElementById(openid.input_id).value);
-    		return false;
-    	}
-    	if(openid.demo) {
-    		alert("In client demo mode. Normally would have submitted OpenID:\r\n" + document.getElementById(openid.input_id).value);
-    		return false;
-    	}
-    	return true;
-    },
-    setOpenIdUrl: function (url) {
-    
-	var hidden = $('#'+this.input_id);
-	if (hidden.length > 0) {
-		hidden.value = url;
-    	} else {
-		$('#openid_form').append('<input style="display:none" id="' + this.input_id + '" name="' + this.input_id + '" value="'+url+'"/>');
-    	}
-    },
-    highlight: function (box_id) {
-    	
-    	// remove previous highlight.
-    	var highlight = $('#openid_highlight');
-    	if (highlight) {
-    		highlight.replaceWith($('#openid_highlight a')[0]);
-    	}
-    	// add new highlight.
-    	$('.'+box_id).wrap('<div id="openid_highlight"></div>');
-    },
-    setCookie: function (value) {
-    
-		var date = new Date();
-		date.setTime(date.getTime()+(this.cookie_expires*24*60*60*1000));
-		var expires = "; expires="+date.toGMTString();
-		
-		document.cookie = this.cookie_name+"="+value+expires+"; path=" + this.cookie_path;
-    },
-    readCookie: function () {
-		var nameEQ = this.cookie_name + "=";
-		var ca = document.cookie.split(';');
-		for(var i=0;i < ca.length;i++) {
-			var c = ca[i];
-			while (c.charAt(0)==' ') c = c.substring(1,c.length);
-			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
-		}
-		return null;
-    },
-    useInputBox: function (provider) {
-   	
-		var input_area = $('#openid_input_area');
-		
-		var html = '';
-		var id = 'openid_username';
-		var value = '';
-		var label = provider['label'];
-		var style = '';
-		
-		if (provider['name'] == 'OpenID') {
-			id = this.input_id;
-			value = '';
-			style = 'background:#FFF url(wikiicons/openidlogin-bg.gif) no-repeat scroll 0 50%; padding-left:18px;';
-		}
-		if (label) {
-			html = '<label for="'+ id +'" class="block">' + label + '</label>';
-		}
-		html += '<input id="'+id+'" type="text" style="'+style+'" name="'+id+'" value="'+value+'" />' + 
-					'<input id="openid_submit" type="submit" value="Login"/>';
-		
-		input_area.empty();
-		input_area.append(html);
-
-		$('#'+id).focus();
-    },
-    setDemoMode: function (demoMode) {
-    	this.demo = demoMode;
-    },
-    setAjaxHandler: function (ajaxFunction) {
-    	this.ajaxHandler = ajaxFunction;
-    }
-};