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<?php
/**
* SemanticScuttle - your social bookmark manager.
*
* PHP version 5.
*
* @category Bookmarking
* @package SemanticScuttle
* @author Christian Weiske <cweiske@cweiske.de>
* @license AGPL http://www.gnu.org/licenses/agpl.html
* @link http://sourceforge.net/projects/semanticscuttle
*/
/**
* SemanticScuttle SSL client certificate management service
*
* @category Bookmarking
* @package SemanticScuttle
* @author Christian Weiske <cweiske@cweiske.de>
* @license AGPL http://www.gnu.org/licenses/agpl.html
* @link http://sourceforge.net/projects/semanticscuttle
*/
class SemanticScuttle_Service_User_SslClientCert extends SemanticScuttle_DbService
{
/**
* Creates a new instance, sets database variable and table name.
*
* @param sql_db $db Database object
*/
protected function __construct($db)
{
$this->db = $db;
$this->tablename = $GLOBALS['tableprefix'] .'users_sslclientcerts';
}
/**
* Returns the single service instance
*
* @param sql_db $db Database object
*
* @return SemanticScuttle_Service_User
*/
public static function getInstance($db)
{
static $instance;
if (!isset($instance)) {
$instance = new self($db);
}
return $instance;
}
/**
* Determines if the browser provided a valid SSL client certificate
*
* @return boolean True if the client cert is there and is valid
*/
public function hasValidCert()
{
if (!isset($_SERVER['SSL_CLIENT_M_SERIAL'])
|| !isset($_SERVER['SSL_CLIENT_V_END'])
|| !isset($_SERVER['SSL_CLIENT_VERIFY'])
|| $_SERVER['SSL_CLIENT_VERIFY'] !== 'SUCCESS'
|| !isset($_SERVER['SSL_CLIENT_I_DN'])
) {
return false;
}
if ($_SERVER['SSL_CLIENT_V_REMAIN'] <= 0) {
return false;
}
return true;
}
/**
* Registers the currently available SSL client certificate
* with the given user. As a result, the user will be able to login
* using the certifiate
*
* @param integer $uId User ID to attach the client cert to.
*
* @return boolean True if registration was well, false if not.
*/
public function registerCurrentCertificate($uId)
{
$serial = $_SERVER['SSL_CLIENT_M_SERIAL'];
$clientIssuerDn = $_SERVER['SSL_CLIENT_I_DN'];
$query = 'INSERT INTO ' . $this->getTableName()
. ' '. $this->db->sql_build_array(
'INSERT', array(
'uId' => $uId,
'sslSerial' => $serial,
'sslClientIssuerDn' => $clientIssuerDn,
'sslName' => $_SERVER['SSL_CLIENT_S_DN_CN'],
'sslEmail' => $_SERVER['SSL_CLIENT_S_DN_Email']
)
);
if (!($dbresult = $this->db->sql_query($query))) {
message_die(
GENERAL_ERROR, 'Could not load user for client certificate',
'', __LINE__, __FILE__, $query, $this->db
);
return false;
}
return true;
}
/**
* Takes values from the currently available SSL client certificate
* and adds the available profile data to the user.
*
* @param integer $uId User ID to attach the client cert to.
*
* @return array Array of profile data that were registered.
* Database column name as key, new value as value
*/
public function updateProfileFromCurentCert($uId)
{
$arData = array();
if (isset($_SERVER['SSL_CLIENT_S_DN_CN'])
&& trim($_SERVER['SSL_CLIENT_S_DN_CN']) != ''
) {
$arData['name'] = trim($_SERVER['SSL_CLIENT_S_DN_CN']);
}
if (count($arData)) {
$us = SemanticScuttle_Service_Factory::get('User');
foreach ($arData as $column => $value) {
$us->_updateuser($uId, $column, $value);
}
}
return $arData;
}
/**
* Tries to detect the user ID from the SSL client certificate passed
* to the web server.
*
* @return mixed Integer user ID if the certificate is valid and
* assigned to a user, boolean false otherwise
*/
public function getUserIdFromCert()
{
if (!$this->hasValidCert()) {
return false;
}
$serial = $_SERVER['SSL_CLIENT_M_SERIAL'];
$clientIssuerDn = $_SERVER['SSL_CLIENT_I_DN'];
$query = 'SELECT uId'
. ' FROM ' . $this->getTableName()
. ' WHERE sslSerial = \'' . $this->db->sql_escape($serial) . '\''
. ' AND sslClientIssuerDn = \''
. $this->db->sql_escape($clientIssuerDn)
. '\'';
if (!($dbresult = $this->db->sql_query($query))) {
message_die(
GENERAL_ERROR, 'Could not load user for client certificate',
'', __LINE__, __FILE__, $query, $this->db
);
return false;
}
$row = $this->db->sql_fetchrow($dbresult);
$this->db->sql_freeresult($dbresult);
if (!$row) {
return false;
}
return (int)$row['uId'];
}
/**
* Fetches all registered certificates for the user from the database
* and returns it.
*
* @return array Array with all certificates for the user. Empty if
* there are none, SemanticScuttle_Model_User_SslClientCert
* objects otherwise.
*/
public function getUserCerts($uId)
{
$query = 'SELECT * FROM ' . $this->getTableName()
. ' ORDER BY sslSerial DESC';
if (!($dbresult = $this->db->sql_query($query))) {
message_die(
GENERAL_ERROR, 'Could not load SSL client certificates',
'', __LINE__, __FILE__, $query, $this->db
);
return array();
}
$certs = array();
while ($row = $this->db->sql_fetchrow($dbresult)) {
$certs[] = SemanticScuttle_Model_User_SslClientCert::fromDb($row);
}
$this->db->sql_freeresult($dbresult);
return $certs;
}
/**
* Deletes a SSL client certificate.
* No security checks are made here.
*
* @param mixed $cert Certificate object or certificate database id.
* Objects are of type
* SemanticScuttle_Model_User_SslClientCert
*
* @return boolean True if all went well, false if it could not be deleted
*/
public function delete($cert)
{
if ($cert instanceof SemanticScuttle_Model_User_SslClientCert) {
$id = (int)$cert->id;
} else {
$id = (int)$cert;
}
if ($id === 0) {
return false;
}
$query = 'DELETE FROM ' . $this->getTableName()
.' WHERE uId = ' . $id;
if (!($dbresult = $this->db->sql_query($query))) {
message_die(
GENERAL_ERROR, 'Could not delete user certificate',
'', __LINE__, __FILE__, $query, $this->db
);
return false;
}
return true;
}
}
?>
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