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<?php
/**
* This example shows several things:
* - How a setup interface should look like.
* - How to use a mysql table for authentication
* - How to store associations in mysql table, instead of php sessions.
* - How to store realm authorizations.
* - How to send AX/SREG parameters.
* For the example to work, you need to create the necessary tables:
CREATE TABLE Users (
id INT NOT NULL auto_increment PRIMARY KEY,
login VARCHAR(32) NOT NULL,
password CHAR(40) NOT NULL,
firstName VARCHAR(32) NOT NULL,
lastName VARCHAR(32) NOT NULL
);
CREATE TABLE AllowedSites (
user INT NOT NULL,
realm TEXT NOT NULL,
attributes TEXT NOT NULL,
INDEX(user)
);
CREATE TABLE Associations (
id INT NOT NULL PRIMARY KEY,
data TEXT NOT NULL
);
*
* This is only an example. Don't use it in your code as-is.
* It has several security flaws, which you shouldn't copy (like storing plaintext login and password in forms).
*
* This setup could be very easily flooded with many associations,
* since non-private ones aren't automatically deleted.
* You could prevent this by storing a date of association and removing old ones,
* or by setting $this->dh = false;
* However, the latter one would disable stateful mode, unless connecting via HTTPS.
*/
require 'provider.php';
mysql_connect();
mysql_select_db('test');
function getUserData($handle=null)
{
if(isset($_POST['login'],$_POST['password'])) {
$login = mysql_real_escape_string($_POST['login']);
$password = sha1($_POST['password']);
$q = mysql_query("SELECT * FROM Users WHERE login = '$login' AND password = '$password'");
if($data = mysql_fetch_assoc($q)) {
return $data;
}
if($handle) {
echo 'Wrong login/password.';
}
}
if($handle) {
?>
<form action="" method="post">
<input type="hidden" name="openid.assoc_handle" value="<?php echo $handle?>">
Login: <input type="text" name="login"><br>
Password: <input type="password" name="password"><br>
<button>Submit</button>
</form>
<?php
die();
}
}
class MysqlProvider extends LightOpenIDProvider
{
private $attrMap = array(
'namePerson/first' => 'First name',
'namePerson/last' => 'Last name',
'namePerson/friendly' => 'Nickname (login)'
);
private $attrFieldMap = array(
'namePerson/first' => 'firstName',
'namePerson/last' => 'lastName',
'namePerson/friendly' => 'login'
);
function setup($identity, $realm, $assoc_handle, $attributes)
{
$data = getUserData($assoc_handle);
echo '<form action="" method="post">'
. '<input type="hidden" name="openid.assoc_handle" value="' . $assoc_handle . '">'
. '<input type="hidden" name="login" value="' . $_POST['login'] .'">'
. '<input type="hidden" name="password" value="' . $_POST['password'] .'">'
. "<b>$realm</b> wishes to authenticate you.";
if($attributes['required'] || $attributes['optional']) {
echo " It also requests following information (required fields marked with *):"
. '<ul>';
foreach($attributes['required'] as $attr) {
if(isset($this->attrMap[$attr])) {
echo '<li>'
. '<input type="checkbox" name="attributes[' . $attr . ']"> '
. $this->attrMap[$attr] . '(*)</li>';
}
}
foreach($attributes['optional'] as $attr) {
if(isset($this->attrMap[$attr])) {
echo '<li>'
. '<input type="checkbox" name="attributes[' . $attr . ']"> '
. $this->attrMap[$attr] . '</li>';
}
}
echo '</ul>';
}
echo '<br>'
. '<button name="once">Allow once</button> '
. '<button name="always">Always allow</button> '
. '<button name="cancel">cancel</button> '
. '</form>';
}
function checkid($realm, &$attributes)
{
if(isset($_POST['cancel'])) {
$this->cancel();
}
$data = getUserData();
if(!$data) {
return false;
}
$realm = mysql_real_escape_string($realm);
$q = mysql_query("SELECT attributes FROM AllowedSites WHERE user = '{$data['id']}' AND realm = '$realm'");
$attrs = array();
if($attrs = mysql_fetch_row($q)) {
$attrs = explode(',', $attributes[0]);
} elseif(isset($_POST['attributes'])) {
$attrs = array_keys($_POST['attributes']);
} elseif(!isset($_POST['once']) && !isset($_POST['always'])) {
return false;
}
$attributes = array();
foreach($attrs as $attr) {
if(isset($this->attrFieldMap[$attr])) {
$attributes[$attr] = $data[$this->attrFieldMap[$attr]];
}
}
if(isset($_POST['always'])) {
$attrs = mysql_real_escape_string(implode(',', array_keys($attributes)));
mysql_query("REPLACE INTO AllowedSites VALUES('{$data['id']}', '$realm', '$attrs')");
}
return $this->serverLocation . '?' . $data['login'];
}
function assoc_handle()
{
# We generate an integer assoc handle, because it's just faster to look up an integer later.
$q = mysql_query("SELECT MAX(id) FROM Associations");
$result = mysql_fetch_row($q);
return $q[0]+1;
}
function setAssoc($handle, $data)
{
$data = mysql_real_escape_string(serialize($data));
mysql_query("REPLACE INTO Associations VALUES('$handle', '$data')");
}
function getAssoc($handle)
{
if(!is_numeric($handle)) {
return false;
}
$q = mysql_query("SELECT data FROM Associations WHERE id = '$handle'");
$data = mysql_fetch_row($q);
if(!$data) {
return false;
}
return unserialize($data[0]);
}
function delAssoc($handle)
{
if(!is_numeric($handle)) {
return false;
}
mysql_query("DELETE FROM Associations WHERE id = '$handle'");
}
}
$op = new MysqlProvider;
$op->server();
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