393 lines
11 KiB
PHP
393 lines
11 KiB
PHP
<?php
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/**
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* Implements a basic security model
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*/
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class Security extends Controller {
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/**
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* @var $username String Only used in dev-mode by setDefaultAdmin()
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*/
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protected static $username;
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/**
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* @var $password String Only used in dev-mode by setDefaultAdmin()
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*/
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protected static $password;
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protected static $strictPathChecking = false;
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/**
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* Register that we've had a permission failure trying to view the given page
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*
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* This will redirect to a login page.
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* If you don't provide a messageSet, a default will be used.
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*
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* @param $page The controller that you were on to cause the permission
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* failure.
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* @param string|array $messageSet The message to show to the user. This
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* can be a string, or a map of different
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* messages for different contexts.
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* If you pass an array, you can use the
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* following keys:
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* - default: The default message
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* - logInAgain: The message to show
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* if the user has just
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* logged out and the
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* - alreadyLoggedIn: The message to
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* show if the user
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* is already logged
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* in and lacks the
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* permission to
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* access the item.
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*/
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static function permissionFailure($page, $messageSet = null) {
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// Prepare the messageSet provided
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if(!$messageSet) {
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$messageSet = array(
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'default' => "That page is secured. Enter your email address and password and we will send you right along.",
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'alreadyLoggedIn' => "You don't have access to this page. If you have another password that can access that page, you can log in below.",
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'logInAgain' => "You have been logged out. If you would like to log in again, enter a username and password below.",
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);
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} else if(!is_array($messageSet)) {
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$messageSet = array('default' => $messageSet);
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}
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// Work out the right message to show
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if(Member::currentUserID()) {
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// user_error( 'PermFailure with member', E_USER_ERROR );
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$message = $messageSet['alreadyLoggedIn']
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? $messageSet['alreadyLoggedIn']
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: $messageSet['default'];
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if($member = Member::currentUser())
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$member->logout();
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} else if(substr(Director::history(),0,15) == 'Security/logout') {
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$message = $messageSet['logInAgain']
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? $messageSet['logInAgain']
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: $messageSet['default'];
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} else {
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$message = $messageSet['default'];
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}
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Session::set("Security.Message.message", $message);
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Session::set("Security.Message.type", 'warning');
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Session::set("BackURL", $_SERVER['REQUEST_URI']);
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if(Director::is_ajax()) {
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die('NOTLOGGEDIN:');
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} else {
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Director::redirect("Security/login");
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}
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return;
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}
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/**
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* Get the login form to process according to the submitted data
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*/
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function LoginForm() {
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if(is_array($_REQUEST) && isset($_REQUEST['AuthenticationMethod']))
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{
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$authenticator = trim($_REQUEST['AuthenticationMethod']);
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$authenticators = Authenticator::getAuthenticators();
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if(in_array($authenticator, $authenticators)) {
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return call_user_func(array($authenticator, 'GetLoginForm'), $this);
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}
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}
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user_error('Passed invalid authentication method', E_USER_ERROR);
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}
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/**
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* Get the login forms for all available authentication methods
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*
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* @return array Returns an array of available login forms (array of Form
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* objects).
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*
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* @todo Check how to activate/deactivate authentication methods
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*/
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function GetLoginForms()
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{
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$forms = array();
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$authenticators = Authenticator::getAuthenticators();
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foreach($authenticators as $authenticator) {
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array_push($forms,
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call_user_func(array($authenticator, 'GetLoginForm'),
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$this));
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}
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return $forms;
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}
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/**
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* Get a link to a security action
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*
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* @param string $action Name of the action
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* @return string Returns the link to the given action
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*/
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function Link($action = null) {
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return "Security/$action";
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}
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/**
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* Log the currently logged in user out
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*
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* @param bool $redirect Redirect the user back to where they came.
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* - If it's false, the code calling logout() is
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* responsible for sending the user where-ever
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* they should go.
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*/
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function logout($redirect = true) {
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if($member = Member::currentUser())
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$member->logOut();
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if($redirect)
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Director::redirectBack();
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}
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/**
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* Show the "login" page
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*
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* @return string Returns the "login" page as HTML code.
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*/
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function login() {
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Requirements::javascript("jsparty/behaviour.js");
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Requirements::javascript("jsparty/loader.js");
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Requirements::javascript("jsparty/prototype.js");
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Requirements::javascript("jsparty/prototype_improvements.js");
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Requirements::javascript("jsparty/scriptaculous/effects.js");
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$customCSS = project() . '/css/tabs.css';
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if(Director::fileExists($customCSS)) {
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Requirements::css($customCSS);
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}
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$tmpPage = new Page();
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$tmpPage->Title = "Log in";
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$tmpPage->URLSegment = "Security";
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$controller = new Page_Controller($tmpPage);
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$controller->init();
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Controller::$currentController = $controller;
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if(SSViewer::hasTemplate("Security_login")) {
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return $controller->renderWith(array("Security_login", "Page"));
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} else {
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$forms = $this->GetLoginForms();
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$content = '';
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foreach($forms as $form)
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$content .= $form->forTemplate();
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if(strlen($message = Session::get('Security.Message.message')) > 0) {
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$message_type = Session::get('Security.Message.type');
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if($message_type == 'bad') {
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$message = "<p class=\"message $message_type\">$message</p>";
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} else {
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$message = "<p>$message</p>";
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}
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$customisedController = $controller->customise(array(
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"Content" => $message,
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"Form" => $content
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));
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} else {
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$customisedController = $controller->customise(array(
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"Content" => $content
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));
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}
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return $customisedController->renderWith("Page");
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}
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}
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/**
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* Show the "lost password" page
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*
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* @return string Returns the "lost password " page as HTML code.
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*/
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function lostpassword() {
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Requirements::javascript("jsparty/prototype.js");
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Requirements::javascript("jsparty/behaviour.js");
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Requirements::javascript("jsparty/loader.js");
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Requirements::javascript("jsparty/prototype_improvements.js");
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Requirements::javascript("jsparty/scriptaculous/effects.js");
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$tmpPage = new Page();
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$tmpPage->Title = "Lost Password";
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$tmpPage->URLSegment = "Security";
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$controller = new Page_Controller($tmpPage);
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$customisedController = $controller->customise(array(
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"Content" =>
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"<p>Enter your e-mail address and we will send you a password</p>",
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"Form" => $this->LostPasswordForm(),
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));
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//Controller::$currentController = $controller;
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return $customisedController->renderWith("Page");
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}
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/**
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* Show the "password sent" page
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*
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* @return string Returns the "password sent" page as HTML code.
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*/
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function passwordsent() {
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Requirements::javascript("jsparty/behaviour.js");
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Requirements::javascript("jsparty/loader.js");
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Requirements::javascript("jsparty/prototype.js");
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Requirements::javascript("jsparty/prototype_improvements.js");
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Requirements::javascript("jsparty/scriptaculous/effects.js");
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$tmpPage = new Page();
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$tmpPage->Title = "Lost Password";
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$tmpPage->URLSegment = "Security";
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$controller = new Page_Controller($tmpPage);
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$email = $this->urlParams['ID'];
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$customisedController = $controller->customise(array(
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"Title" => "Password sent to '$email'",
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"Content" =>
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"<p>Thank you, your password has been sent to '$email'.</p>",
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));
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//Controller::$currentController = $controller;
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return $customisedController->renderWith("Page");
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}
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/**
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* Factory method for the lost password form
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*
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* @return Form Returns the lost password form
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*/
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function LostPasswordForm() {
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return new MemberLoginForm($this, "LostPasswordForm", new FieldSet(
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new EmailField("Email", "Email address")
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), new FieldSet(
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new FormAction("forgotPassword", "Send me my password")
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), false
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);
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}
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/**
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* Authenticate using the given email and password, returning the
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* appropriate member object if
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*
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* @return bool|Member Returns FALSE if authentication fails, otherwise
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* the member object
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*/
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static function authenticate($RAW_email, $RAW_password) {
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$SQL_email = Convert::raw2sql($RAW_email);
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$SQL_password = Convert::raw2sql($RAW_password);
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// Default login (see {@setDetaultAdmin()})
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if(($RAW_email == self::$username) && ($RAW_password == self::$password)
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&& !empty(self::$username) && !empty(self::$password)) {
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$member = self::findAnAdministrator();
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} else {
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$member = DataObject::get_one("Member",
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"Email = '$SQL_email' And Password = '$SQL_password'");
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}
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return $member;
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}
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/**
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* Return a member with administrator privileges
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*
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* @return Member Returns a member object that has administrator
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* privileges.
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*/
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static function findAnAdministrator($username = 'admin',
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$password = 'password') {
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$permission = DataObject::get_one("Permission", "`Code` = 'ADMIN'");
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$adminGroup = null;
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if($permission) $adminGroup = DataObject::get_one("Group", "`ID` = '{$permission->GroupID}'", true, "ID");
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if($adminGroup) {
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if($adminGroup->Members()->First()) {
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$member = $adminGroup->Members()->First();
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}
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}
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if(!$adminGroup) {
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$adminGroup = Object::create('Group');
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$adminGroup->Title = 'Administrators';
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$adminGroup->Code = "administrators";
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$adminGroup->write();
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Permission::grant($adminGroup->ID, "ADMIN");
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}
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if(!isset($member)) {
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$member = Object::create('Member');
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$member->FirstName = $member->Surname = 'Admin';
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$member->Email = $username;
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$member->Password = $password;
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$member->write();
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$member->Groups()->add($adminGroup);
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}
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return $member;
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}
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/**
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* This will set a static default-admin (e.g. "td") which is not existing
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* as a database-record. By this workaround we can test pages in dev-mode
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* with a unified login. Submitted login-credentials are first checked
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* against this static information in {@authenticate()}.
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*
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* @param $username String
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* @param $password String (Cleartext)
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*/
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static function setDefaultAdmin( $username, $password ) {
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if( self::$username || self::$password )
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return;
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self::$username = $username;
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self::$password = $password;
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}
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/**
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* Set strict path checking
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*
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* This prevents sharing of the session across several sites in the domain.
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*
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* @param boolean $strictPathChecking To enable or disable strict patch
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* checking.
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*/
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static function setStrictPathChecking($strictPathChecking) {
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self::$strictPathChecking = $strictPathChecking;
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}
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/**
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* Get strict path checking
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*
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* @return boolean Status of strict path checking
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*/
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static function getStrictPathChecking() {
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return self::$strictPathChecking;
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}
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}
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?>
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