mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
7be8460917
See http://www.silverstripe.com/google-summer-of-code-forum/flat/2417 for more information. (merged from branches/gsoc) git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@41959 467b73ca-7a2a-4603-9d3b-597d59a354a9
655 lines
19 KiB
PHP
655 lines
19 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Implements a basic security model
|
|
*/
|
|
class Security extends Controller {
|
|
|
|
/**
|
|
* @var $username String Only used in dev-mode by setDefaultAdmin()
|
|
*/
|
|
protected static $username;
|
|
|
|
/**
|
|
* @var $password String Only used in dev-mode by setDefaultAdmin()
|
|
*/
|
|
protected static $password;
|
|
|
|
/**
|
|
* If set to TRUE to prevent sharing of the session across several sites
|
|
* in the domain.
|
|
*
|
|
* @var bool
|
|
*/
|
|
protected static $strictPathChecking = false;
|
|
|
|
/**
|
|
* Should passwords be stored encrypted?
|
|
*
|
|
* @var bool
|
|
*/
|
|
protected static $encryptPasswords = true;
|
|
|
|
/**
|
|
* The password encryption algorithm to use if {@link $encryptPasswords}
|
|
* is set to TRUE.
|
|
*
|
|
* @var string
|
|
*/
|
|
protected static $encryptionAlgorithm = 'sha1';
|
|
|
|
/**
|
|
* Should a salt be used for the password encryption?
|
|
*
|
|
* @var bool
|
|
*/
|
|
protected static $useSalt = true;
|
|
|
|
|
|
/**
|
|
* Register that we've had a permission failure trying to view the given page
|
|
*
|
|
* This will redirect to a login page.
|
|
* If you don't provide a messageSet, a default will be used.
|
|
*
|
|
* @param $page The controller that you were on to cause the permission
|
|
* failure.
|
|
* @param string|array $messageSet The message to show to the user. This
|
|
* can be a string, or a map of different
|
|
* messages for different contexts.
|
|
* If you pass an array, you can use the
|
|
* following keys:
|
|
* - default: The default message
|
|
* - logInAgain: The message to show
|
|
* if the user has just
|
|
* logged out and the
|
|
* - alreadyLoggedIn: The message to
|
|
* show if the user
|
|
* is already logged
|
|
* in and lacks the
|
|
* permission to
|
|
* access the item.
|
|
*/
|
|
static function permissionFailure($page, $messageSet = null) {
|
|
// Prepare the messageSet provided
|
|
if(!$messageSet) {
|
|
$messageSet = array(
|
|
'default' => "That page is secured. Enter your credentials below and we will send you right along.",
|
|
'alreadyLoggedIn' => "You don't have access to this page. If you have another account that can access that page, you can log in below.",
|
|
'logInAgain' => "You have been logged out. If you would like to log in again, enter your credentials below.",
|
|
);
|
|
} else if(!is_array($messageSet)) {
|
|
$messageSet = array('default' => $messageSet);
|
|
}
|
|
|
|
// Work out the right message to show
|
|
if(Member::currentUserID()) {
|
|
// user_error( 'PermFailure with member', E_USER_ERROR );
|
|
|
|
$message = $messageSet['alreadyLoggedIn']
|
|
? $messageSet['alreadyLoggedIn']
|
|
: $messageSet['default'];
|
|
|
|
if($member = Member::currentUser())
|
|
$member->logout();
|
|
|
|
} else if(substr(Director::history(),0,15) == 'Security/logout') {
|
|
$message = $messageSet['logInAgain']
|
|
? $messageSet['logInAgain']
|
|
: $messageSet['default'];
|
|
|
|
} else {
|
|
$message = $messageSet['default'];
|
|
}
|
|
|
|
Session::set("Security.Message.message", $message);
|
|
Session::set("Security.Message.type", 'warning');
|
|
|
|
Session::set("BackURL", $_SERVER['REQUEST_URI']);
|
|
|
|
if(Director::is_ajax()) {
|
|
die('NOTLOGGEDIN:');
|
|
} else {
|
|
Director::redirect("Security/login");
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the login form to process according to the submitted data
|
|
*/
|
|
function LoginForm() {
|
|
if(is_array($_REQUEST) && isset($_REQUEST['AuthenticationMethod']))
|
|
{
|
|
$authenticator = trim($_REQUEST['AuthenticationMethod']);
|
|
|
|
$authenticators = Authenticator::getAuthenticators();
|
|
if(in_array($authenticator, $authenticators)) {
|
|
return call_user_func(array($authenticator, 'GetLoginForm'), $this);
|
|
}
|
|
}
|
|
|
|
user_error('Passed invalid authentication method', E_USER_ERROR);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the login forms for all available authentication methods
|
|
*
|
|
* @return array Returns an array of available login forms (array of Form
|
|
* objects).
|
|
*
|
|
* @todo Check how to activate/deactivate authentication methods
|
|
*/
|
|
function GetLoginForms()
|
|
{
|
|
$forms = array();
|
|
|
|
$authenticators = Authenticator::getAuthenticators();
|
|
foreach($authenticators as $authenticator) {
|
|
array_push($forms,
|
|
call_user_func(array($authenticator, 'GetLoginForm'),
|
|
$this));
|
|
}
|
|
|
|
return $forms;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a link to a security action
|
|
*
|
|
* @param string $action Name of the action
|
|
* @return string Returns the link to the given action
|
|
*/
|
|
function Link($action = null) {
|
|
return "Security/$action";
|
|
}
|
|
|
|
|
|
/**
|
|
* Log the currently logged in user out
|
|
*
|
|
* @param bool $redirect Redirect the user back to where they came.
|
|
* - If it's false, the code calling logout() is
|
|
* responsible for sending the user where-ever
|
|
* they should go.
|
|
*/
|
|
function logout($redirect = true) {
|
|
if($member = Member::currentUser())
|
|
$member->logOut();
|
|
|
|
if($redirect)
|
|
Director::redirectBack();
|
|
}
|
|
|
|
|
|
/**
|
|
* Show the "login" page
|
|
*
|
|
* @return string Returns the "login" page as HTML code.
|
|
*/
|
|
function login() {
|
|
Requirements::javascript("jsparty/behaviour.js");
|
|
Requirements::javascript("jsparty/loader.js");
|
|
Requirements::javascript("jsparty/prototype.js");
|
|
Requirements::javascript("jsparty/prototype_improvements.js");
|
|
Requirements::javascript("jsparty/scriptaculous/effects.js");
|
|
|
|
$customCSS = project() . '/css/tabs.css';
|
|
if(Director::fileExists($customCSS)) {
|
|
Requirements::css($customCSS);
|
|
}
|
|
|
|
$tmpPage = new Page();
|
|
$tmpPage->Title = "Log in";
|
|
$tmpPage->URLSegment = "Security";
|
|
|
|
$controller = new Page_Controller($tmpPage);
|
|
$controller->init();
|
|
//Controller::$currentController = $controller;
|
|
|
|
if(SSViewer::hasTemplate("Security_login")) {
|
|
return $controller->renderWith(array("Security_login", "Page"));
|
|
|
|
} else {
|
|
$forms = $this->GetLoginForms();
|
|
$content = '';
|
|
foreach($forms as $form)
|
|
$content .= $form->forTemplate();
|
|
|
|
if(strlen($message = Session::get('Security.Message.message')) > 0) {
|
|
$message_type = Session::get('Security.Message.type');
|
|
if($message_type == 'bad') {
|
|
$message = "<p class=\"message $message_type\">$message</p>";
|
|
} else {
|
|
$message = "<p>$message</p>";
|
|
}
|
|
|
|
$customisedController = $controller->customise(array(
|
|
"Content" => $message,
|
|
"Form" => $content
|
|
));
|
|
} else {
|
|
$customisedController = $controller->customise(array(
|
|
"Content" => $content
|
|
));
|
|
}
|
|
|
|
return $customisedController->renderWith("Page");
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Show the "lost password" page
|
|
*
|
|
* @return string Returns the "lost password " page as HTML code.
|
|
*/
|
|
function lostpassword() {
|
|
Requirements::javascript("jsparty/prototype.js");
|
|
Requirements::javascript("jsparty/behaviour.js");
|
|
Requirements::javascript("jsparty/loader.js");
|
|
Requirements::javascript("jsparty/prototype_improvements.js");
|
|
Requirements::javascript("jsparty/scriptaculous/effects.js");
|
|
|
|
$tmpPage = new Page();
|
|
$tmpPage->Title = "Lost Password";
|
|
$tmpPage->URLSegment = "Security";
|
|
$controller = new Page_Controller($tmpPage);
|
|
|
|
$customisedController = $controller->customise(array(
|
|
"Content" =>
|
|
"<p>Enter your e-mail address and we will send you a password</p>",
|
|
"Form" => $this->LostPasswordForm(),
|
|
));
|
|
|
|
//Controller::$currentController = $controller;
|
|
return $customisedController->renderWith("Page");
|
|
}
|
|
|
|
|
|
/**
|
|
* Show the "password sent" page
|
|
*
|
|
* @return string Returns the "password sent" page as HTML code.
|
|
*/
|
|
function passwordsent() {
|
|
Requirements::javascript("jsparty/behaviour.js");
|
|
Requirements::javascript("jsparty/loader.js");
|
|
Requirements::javascript("jsparty/prototype.js");
|
|
Requirements::javascript("jsparty/prototype_improvements.js");
|
|
Requirements::javascript("jsparty/scriptaculous/effects.js");
|
|
|
|
$tmpPage = new Page();
|
|
$tmpPage->Title = "Lost Password";
|
|
$tmpPage->URLSegment = "Security";
|
|
$controller = new Page_Controller($tmpPage);
|
|
|
|
$email = $this->urlParams['ID'];
|
|
$customisedController = $controller->customise(array(
|
|
"Title" => "Password sent to '$email'",
|
|
"Content" =>
|
|
"<p>Thank you, your password has been sent to '$email'.</p>",
|
|
));
|
|
|
|
//Controller::$currentController = $controller;
|
|
return $customisedController->renderWith("Page");
|
|
}
|
|
|
|
|
|
/**
|
|
* Factory method for the lost password form
|
|
*
|
|
* @return Form Returns the lost password form
|
|
*/
|
|
function LostPasswordForm() {
|
|
return new MemberLoginForm($this, "LostPasswordForm", new FieldSet(
|
|
new EmailField("Email", "Email address")
|
|
), new FieldSet(
|
|
new FormAction("forgotPassword", "Send me my password")
|
|
), false
|
|
);
|
|
}
|
|
|
|
|
|
/**
|
|
* Authenticate using the given email and password, returning the
|
|
* appropriate member object if
|
|
*
|
|
* @return bool|Member Returns FALSE if authentication fails, otherwise
|
|
* the member object
|
|
*/
|
|
static function authenticate($RAW_email, $RAW_password) {
|
|
$SQL_email = Convert::raw2sql($RAW_email);
|
|
$SQL_password = Convert::raw2sql($RAW_password);
|
|
|
|
// Default login (see {@setDetaultAdmin()})
|
|
if(($RAW_email == self::$username) && ($RAW_password == self::$password)
|
|
&& !empty(self::$username) && !empty(self::$password)) {
|
|
$member = self::findAnAdministrator();
|
|
} else {
|
|
$member = DataObject::get_one("Member",
|
|
"Email = '$SQL_email' And Password = '$SQL_password'");
|
|
}
|
|
|
|
return $member;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return a member with administrator privileges
|
|
*
|
|
* @return Member Returns a member object that has administrator
|
|
* privileges.
|
|
*/
|
|
static function findAnAdministrator($username = 'admin',
|
|
$password = 'password') {
|
|
$permission = DataObject::get_one("Permission", "`Code` = 'ADMIN'");
|
|
|
|
$adminGroup = null;
|
|
if($permission) $adminGroup = DataObject::get_one("Group", "`ID` = '{$permission->GroupID}'", true, "ID");
|
|
|
|
if($adminGroup) {
|
|
if($adminGroup->Members()->First()) {
|
|
$member = $adminGroup->Members()->First();
|
|
}
|
|
}
|
|
|
|
if(!$adminGroup) {
|
|
$adminGroup = Object::create('Group');
|
|
$adminGroup->Title = 'Administrators';
|
|
$adminGroup->Code = "administrators";
|
|
$adminGroup->write();
|
|
Permission::grant($adminGroup->ID, "ADMIN");
|
|
}
|
|
|
|
if(!isset($member)) {
|
|
$member = Object::create('Member');
|
|
$member->FirstName = $member->Surname = 'Admin';
|
|
$member->Email = $username;
|
|
$member->Password = $password;
|
|
$member->write();
|
|
$member->Groups()->add($adminGroup);
|
|
}
|
|
|
|
return $member;
|
|
}
|
|
|
|
|
|
/**
|
|
* This will set a static default-admin (e.g. "td") which is not existing
|
|
* as a database-record. By this workaround we can test pages in dev-mode
|
|
* with a unified login. Submitted login-credentials are first checked
|
|
* against this static information in {@authenticate()}.
|
|
*
|
|
* @param $username String
|
|
* @param $password String (Cleartext)
|
|
*/
|
|
static function setDefaultAdmin( $username, $password ) {
|
|
if( self::$username || self::$password )
|
|
return;
|
|
|
|
self::$username = $username;
|
|
self::$password = $password;
|
|
}
|
|
|
|
|
|
/**
|
|
* Set strict path checking
|
|
*
|
|
* This prevents sharing of the session across several sites in the domain.
|
|
*
|
|
* @param boolean $strictPathChecking To enable or disable strict patch
|
|
* checking.
|
|
*/
|
|
static function setStrictPathChecking($strictPathChecking) {
|
|
self::$strictPathChecking = $strictPathChecking;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get strict path checking
|
|
*
|
|
* @return boolean Status of strict path checking
|
|
*/
|
|
static function getStrictPathChecking() {
|
|
return self::$strictPathChecking;
|
|
}
|
|
|
|
|
|
/**
|
|
* Set if passwords should be encrypted or not
|
|
*
|
|
* @param bool $encrypt Set to TRUE if you want that all (new) passwords
|
|
* will be stored encrypted, FALSE if you want to
|
|
* store the passwords in clear text.
|
|
*/
|
|
public static function encrypt_passwords($encrypt) {
|
|
self::$encryptPasswords = (bool)$encrypt;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a list of all available encryption algorithms
|
|
*
|
|
* This method tries to use PHP's hash_algos() function. If it is not
|
|
* supported or it returns no algorithms, as a failback mechanism it tries
|
|
* to use the md5() and sha1() function and returns them.
|
|
*
|
|
* @return array Returns an array of strings containing all supported
|
|
* encryption algorithms.
|
|
*/
|
|
public static function get_encryption_algorithms() {
|
|
$result = function_exists('hash_algos')
|
|
? hash_algos()
|
|
: array();
|
|
|
|
if(count($result) == 0) {
|
|
if(function_exists('md5'))
|
|
$result[] = 'md5';
|
|
|
|
if(function_exists('sha1'))
|
|
$result[] = 'sha1';
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* Set the password encryption algorithm
|
|
*
|
|
* @param string $algorithm One of the available password encryption
|
|
* algorithms determined by
|
|
* {@link Security::get_encryption_algorithms()}
|
|
* @param bool $use_salt Set to TRUE if a random salt should be used to
|
|
* encrypt the passwords, otherwise FALSE
|
|
* @return bool Returns TRUE if the passed algorithm was valid, otherwise
|
|
* FALSE.
|
|
*/
|
|
public static function set_password_encryption_algorithm($algorithm,
|
|
$use_salt) {
|
|
if(in_array($algorithm, self::get_encryption_algorithms()) == false)
|
|
return false;
|
|
|
|
self::$encryptionAlgorithm = $algorithm;
|
|
self::$useSalt = (bool)$use_salt;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the the password encryption details
|
|
*
|
|
* The return value is an array of the following form:
|
|
* <code>
|
|
* array('encrypt_passwords' => bool,
|
|
* 'algorithm' => string,
|
|
* 'use_salt' => bool)
|
|
* </code>
|
|
*
|
|
* @return array Returns an associative array containing all the
|
|
* password encryption relevant information.
|
|
*/
|
|
public static function get_password_encryption_details() {
|
|
return array('encrypt_passwords' => self::$encryptPasswords,
|
|
'algorithm' => self::$encryptionAlgorithm,
|
|
'use_salt' => self::$useSalt);
|
|
}
|
|
|
|
|
|
/**
|
|
* Encrypt a password
|
|
*
|
|
* Encrypt a password according to the current password encryption
|
|
* settings.
|
|
* Use {@link Security::get_password_encryption_details()} to retrieve the
|
|
* current settings.
|
|
* If the settings are so that passwords shouldn't be encrypted, the
|
|
* result is simple the clear text password with an empty salt except when
|
|
* a custom algorithm ($algorithm parameter) was passed.
|
|
*
|
|
* @param string $password The password to encrypt
|
|
* @param string $salt Optional: The salt to use. If it is not passed, but
|
|
* needed, the method will automatically create a
|
|
* random salt that will then be returned as return
|
|
* value.
|
|
* @pram strin $algorithm Optional: Use another algorithm to encrypt the
|
|
* password (so that the encryption algorithm can
|
|
* be changed over the time).
|
|
* @return mixed Returns an associative array containing the encrypted
|
|
* password and the used salt in the form
|
|
* <i>array('encrypted_password' => string, 'salt' =>
|
|
* string, 'algorithm' => string)</i>.
|
|
* If the passed algorithm is invalid, FALSE will be
|
|
* returned.
|
|
*
|
|
* @see encrypt_passwords()
|
|
* @see set_password_encryption_algorithm()
|
|
* @see get_password_encryption_details()
|
|
*/
|
|
public static function encrypt_password($password, $salt = null,
|
|
$algorithm = null) {
|
|
if(strlen(trim($password)) == 0) {
|
|
// An empty password was passed, return an empty password an salt!
|
|
return array('password' => null,
|
|
'salt' => null,
|
|
'algorithm' => 'none');
|
|
|
|
} elseif((self::$encryptPasswords == false) || ($algorithm == 'none')) {
|
|
// The password should not be encrypted
|
|
return array('password' => substr($password, 0, 64),
|
|
'salt' => null,
|
|
'algorithm' => 'none');
|
|
|
|
} elseif(strlen(trim($algorithm)) != 0) {
|
|
// A custom encryption algorithm was passed, check if we can use it
|
|
if(in_array($algorithm, self::get_encryption_algorithms()) == false)
|
|
return false;
|
|
|
|
} else {
|
|
// Just use the default encryption algorithm
|
|
$algorithm = self::$encryptionAlgorithm;
|
|
}
|
|
|
|
|
|
// If no salt was provided but we need one we just generate a random one
|
|
if(strlen(trim($salt)) == 0)
|
|
$salt = null;
|
|
|
|
if((self::$useSalt == true) && is_null($salt)) {
|
|
$salt = sha1(mt_rand()) . time();
|
|
$salt = substr(base_convert($salt, 16, 36), 0, 50);
|
|
}
|
|
|
|
|
|
// Encrypt the password
|
|
if(function_exists('hash')) {
|
|
$password = hash($algorithm, $password . $salt);
|
|
} else {
|
|
$password = call_user_func($algorithm, $password . $salt);
|
|
}
|
|
|
|
// Convert the base of the hexadecimal password to 36 to make it shorter
|
|
// In that way we can store also a SHA256 encrypted password in just 64
|
|
// letters.
|
|
$password = substr(base_convert($password, 16, 36), 0, 64);
|
|
|
|
|
|
return array('password' => $password,
|
|
'salt' => $salt,
|
|
'algorithm' => $algorithm);
|
|
}
|
|
|
|
|
|
/**
|
|
* Encrypt all passwords
|
|
*
|
|
* Action to encrypt all *clear text* passwords in the database according
|
|
* to the current settings.
|
|
* If the current settings are so that passwords shouldn't be encrypted,
|
|
* an explanation will be printed out.
|
|
*
|
|
* To run this action, the user needs to have administrator rights!
|
|
*/
|
|
function encryptallpasswords() {
|
|
// Only administrators can run this method
|
|
if(!Member::currentUser() || !Member::currentUser()->isAdmin()) {
|
|
Security::permissionFailure($this,
|
|
"This page is secured and you need administrator rights to access it. " .
|
|
"Enter your credentials below and we will send you right along.");
|
|
return;
|
|
}
|
|
|
|
|
|
if(self::$encryptPasswords == false) {
|
|
print "<h1>Password encryption disabled!</h1>\n";
|
|
print "<p>To encrypt your passwords change your password settings by adding\n";
|
|
print "<pre>Security::encrypt_passwords(true);</pre>\nto mysite/_config.php</p>";
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
// Are there members with a clear text password?
|
|
$members = DataObject::get("Member",
|
|
"PasswordEncryption = 'none' AND Password IS NOT NULL");
|
|
|
|
if(!$members) {
|
|
print "<h1>No passwords to encrypt</h1>\n";
|
|
print "<p>There are no members with a clear text password that could be encrypted!</p>\n";
|
|
|
|
return;
|
|
}
|
|
|
|
// Encrypt the passwords...
|
|
print "<h1>Encrypting all passwords</h1>";
|
|
print '<p>The passwords will be encrypted using the "' .
|
|
htmlentities(self::$encryptionAlgorithm) . '" algorithm ';
|
|
|
|
print (self::$useSalt)
|
|
? "with a salt to increase the security.</p>\n"
|
|
: "without using a salt to increase the security.</p><p>\n";
|
|
|
|
foreach($members as $member) {
|
|
// Force the update of the member record, as new passwords get
|
|
// automatically encrypted according to the settings, this will do all
|
|
// the work for us
|
|
$member->forceChange();
|
|
$member->write();
|
|
|
|
print " Encrypted credentials for member "";
|
|
print htmlentities($member->getTitle()) . '" (ID: ' . $member->ID .
|
|
'; E-Mail: ' . htmlentities($member->Email) . ")<br />\n";
|
|
}
|
|
|
|
print '</p>';
|
|
}
|
|
|
|
}
|
|
|
|
|
|
?>
|