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<?php
require_once 'Auth/OpenID/SReg.php';
add_filter( 'openid_server_xrds_types', 'openid_server_sreg_xrds_types' );
add_action( 'openid_server_post_auth', 'openid_server_sreg_post_auth' );
function openid_server_sreg_xrds_types( $types ) {
$types[] = 'http://openid.net/extensions/sreg/1.1';
$types[] = 'http://openid.net/sreg/1.0';
return $types;
}
/**
* See if the OpenID authentication request includes SReg and add additional hooks if so.
*/
function openid_server_sreg_post_auth( $request ) {
$sreg_request = Auth_OpenID_SRegRequest::fromOpenIDRequest( $request );
if ( $sreg_request ) {
$GLOBALS['openid_server_sreg_request'] = $sreg_request;
add_action( 'openid_server_trust_form', 'openid_server_attributes_trust_form' );
add_filter( 'openid_server_trust_form_attributes', 'openid_server_sreg_trust_form' );
add_action( 'openid_server_trust_submit', 'openid_server_sreg_trust_submit', 10, 2 );
add_filter( 'openid_server_store_trusted_site', 'openid_server_sreg_store_trusted_site' );
add_action( 'openid_server_auth_response', 'openid_server_sreg_auth_response' );
}
}
/**
* Add SReg input fields to the OpenID Trust Form
*/
function openid_server_sreg_trust_form( $attributes ) {
$sreg_request = $GLOBALS['openid_server_sreg_request'];
$sreg_fields = $sreg_request->allRequestedFields();
if ( ! empty( $sreg_fields ) ) {
foreach ( $sreg_fields as $field ) {
$value = openid_server_sreg_from_profile( $field );
if ( ! empty( $value ) ) {
$attributes[] = strtolower( $GLOBALS['Auth_OpenID_sreg_data_fields'][ $field ] );
}
}
}
return $attributes;
}
/**
* Add attribute input fields to the OpenID Trust Form
*/
function openid_server_attributes_trust_form() {
$attributes = apply_filters( 'openid_server_trust_form_attributes', array() );
if ( ! empty( $attributes ) ) {
$attr_string = openid_server_attributes_string( $attributes );
echo '
<p class="trust_form_add" style="padding: 0">
<input type="checkbox" id="include_sreg" name="include_sreg" checked="checked" style="display: block; float: left; margin: 0.8em;" />
<label for="include_sreg" style="display: block; padding: 0.5em 2em;">' . sprintf( __( 'Also grant access to see my %s.', 'openid' ), $attr_string ) . '</label>
</p>';
}
}
/**
* Convert list of attribute names to human readable string.
*/
function openid_server_attributes_string( $fields, $string = '' ) {
if ( empty( $fields ) ) {
return $string;
}
if ( empty( $string ) ) {
if ( sizeof( $fields ) == 2 ) {
return join( ' and ', $fields );
}
$string = array_shift( $fields );
} else if ( sizeof( $fields ) == 1 ) {
$string .= ', and ' . array_shift( $fields );
} else if ( sizeof( $fields ) > 1 ) {
$string .= ', ' . array_shift( $fields );
}
return openid_server_attributes_string( $fields, $string );
}
/**
* Based on input from the OpenID trust form, prep data to be included in the authentication response
*/
function openid_server_sreg_trust_submit( $trust, $request ) {
if ( $trust && isset( $_REQUEST['include_sreg'] ) && 'on' == $_REQUEST['include_sreg'] ) {
$GLOBALS['openid_server_sreg_trust'] = true;
} else {
$GLOBALS['openid_server_sreg_trust'] = false;
}
}
/**
* Store user's decision on whether to release attributes to the site.
*/
function openid_server_sreg_store_trusted_site( $site ) {
$site['release_attributes'] = $GLOBALS['openid_server_sreg_trust'];
return $site;
}
/**
* Attach SReg response to authentication response.
*/
function openid_server_sreg_auth_response( $response ) {
$user = wp_get_current_user();
// should we include SREG in the response?
$include_sreg = false;
if ( isset( $GLOBALS['openid_server_sreg_trust'] ) ) {
$include_sreg = $GLOBALS['openid_server_sreg_trust'];
} else {
$trusted_sites = get_user_meta( $user->ID, 'openid_trusted_sites', true );
$request = $response->request;
$site_hash = md5( $request->trust_root );
if ( is_array( $trusted_sites ) && array_key_exists( $site_hash, $trusted_sites ) ) {
$include_sreg = $trusted_sites[ $site_hash ]['release_attributes'];
}
}
if ( $include_sreg ) {
$sreg_data = array();
foreach ( $GLOBALS['Auth_OpenID_sreg_data_fields'] as $field => $name ) {
$value = openid_server_sreg_from_profile( $field );
if ( ! empty( $value ) ) {
$sreg_data[ $field ] = $value;
}
}
$sreg_response = Auth_OpenID_SRegResponse::extractResponse( $GLOBALS['openid_server_sreg_request'], $sreg_data );
if ( ! empty( $sreg_response ) ) {
$response->addExtension( $sreg_response );
}
}
return $response;
}
/**
* Try to pre-populate SReg data from user's profile. The following fields
* are not handled by the plugin: dob, gender, postcode, country, and language.
* Other plugins may provide this data by implementing the filter
* openid_server_sreg_${fieldname}.
*
* @uses apply_filters() Calls 'openid_server_sreg_*' before returning sreg values,
* where '*' is the name of the sreg attribute.
*/
function openid_server_sreg_from_profile( $field ) {
$user = wp_get_current_user();
$value = '';
switch ( $field ) {
case 'nickname':
$value = get_user_meta( $user->ID, 'nickname', true );
break;
case 'email':
$value = $user->user_email;
break;
case 'fullname':
$user_data = get_userdata( $user->ID );
$value = $user_data->display_name;
break;
}
$value = apply_filters( 'openid_server_sreg_' . $field, $value, $user->ID );
return $value;
}
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