mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
6205cff4f1
respecting Security::setDefaultAdmin() in MemberAuthenticator? (merged from branches/gsoc) git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@42156 467b73ca-7a2a-4603-9d3b-597d59a354a9
755 lines
22 KiB
PHP
755 lines
22 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 $default_username String Only used in dev-mode by setDefaultAdmin()
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*/
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protected static $default_username;
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/**
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* @var $default_password String Only used in dev-mode by setDefaultAdmin()
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*/
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protected static $default_password;
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/**
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* If set to TRUE to prevent sharing of the session across several sites
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* in the domain.
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*
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* @var bool
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*/
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protected static $strictPathChecking = false;
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/**
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* Should passwords be stored encrypted?
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*
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* @var bool
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*/
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protected static $encryptPasswords = true;
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/**
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* The password encryption algorithm to use if {@link $encryptPasswords}
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* is set to TRUE.
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*
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* @var string
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*/
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protected static $encryptionAlgorithm = 'sha1';
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/**
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* Should a salt be used for the password encryption?
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*
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* @var bool
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*/
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protected static $useSalt = true;
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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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$messageSet = array(
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'default' => "That page is secured. Enter your credentials below and we will send you right along.",
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'alreadyLoggedIn' => "You don't have access to this page. If you have another account that can access that page, you can log in below.",
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'logInAgain' => "You have been logged out. If you would like to log in again, enter your credentials below.",
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);
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} else if(!is_array($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", $_SERVER['REQUEST_URI']);
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if(Director::is_ajax()) {
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die('NOTLOGGEDIN:');
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} else {
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Director::redirect("Security/login");
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}
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return;
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}
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/**
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* Get the login form to process according to the submitted data
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*/
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protected function LoginForm() {
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if(is_array($_REQUEST) && isset($_REQUEST['AuthenticationMethod']))
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{
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$authenticator = trim($_REQUEST['AuthenticationMethod']);
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$authenticators = Authenticator::get_authenticators();
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if(in_array($authenticator, $authenticators)) {
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return call_user_func(array($authenticator, 'get_login_form'),
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$this);
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}
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}
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user_error('Passed invalid authentication method', E_USER_ERROR);
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}
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/**
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* Get the login forms for all available authentication methods
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*
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* @return array Returns an array of available login forms (array of Form
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* objects).
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*
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* @todo Check how to activate/deactivate authentication methods
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*/
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protected function GetLoginForms()
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{
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$forms = array();
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$authenticators = Authenticator::get_authenticators();
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foreach($authenticators as $authenticator) {
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array_push($forms,
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call_user_func(array($authenticator, 'get_login_form'),
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$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 $action Name of the action
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* @return string Returns the link to the given action
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*/
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public static function Link($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 $redirect Redirect the user back to where they came.
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* - If it's false, the code calling logout() is
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* responsible for sending the user where-ever
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* they should go.
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*/
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public function logout($redirect = true) {
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if($member = Member::currentUser())
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$member->logOut();
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if($redirect)
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Director::redirectBack();
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}
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/**
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* Show the "login" page
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*
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* @return string Returns the "login" page as HTML code.
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*/
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public function login() {
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Requirements::javascript("jsparty/behaviour.js");
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Requirements::javascript("jsparty/loader.js");
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Requirements::javascript("jsparty/prototype.js");
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Requirements::javascript("jsparty/prototype_improvements.js");
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Requirements::javascript("jsparty/scriptaculous/effects.js");
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$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 $controller->renderWith(array("Security_login", "Page"));
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} else {
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// Needed because the <base href=".."> in the template makes problems
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// with the tabstrip library otherwise
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$link_base = Director::absoluteURL($this->Link("login"));
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$forms = $this->GetLoginForms();
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$content = '<div id="Form_EditForm">';
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$content .= '<ul class="tabstrip">';
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$content_forms = '';
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foreach($forms as $form) {
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$content .= "<li><a href=\"$link_base#{$form->FormName()}_tab\">{$form->getAuthenticator()->get_name()}</a></li>\n";
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$content_forms .= '<div class="tab" id="' . $form->FormName() . '_tab">' . $form->forTemplate() . "</div>\n";
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}
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$content .= "</ul>\n" . $content_forms . "\n</div>\n";
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if(strlen($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 $customisedController->renderWith("Page");
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}
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}
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/**
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* Show the "lost password" page
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*
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* @return string Returns the "lost password" page as HTML code.
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*/
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public function lostpassword() {
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Requirements::javascript('jsparty/prototype.js');
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Requirements::javascript('jsparty/behaviour.js');
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Requirements::javascript('jsparty/loader.js');
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Requirements::javascript('jsparty/prototype_improvements.js');
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Requirements::javascript('jsparty/scriptaculous/effects.js');
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$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 link with ' .
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'which you can reset your 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 $customisedController->renderWith("Page");
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}
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/**
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* Factory method for the lost password form
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*
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* @return Form Returns the lost password form
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*/
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public function LostPasswordForm() {
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return new MemberLoginForm($this, 'LostPasswordForm',
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new FieldSet(new EmailField('Email', 'E-mail address')),
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new FieldSet(new FormAction('forgotPassword',
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'Send me the password reset link')),
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false);
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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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public 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 = Convert::raw2xml($this->urlParams['ID']);
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$customisedController = $controller->customise(array(
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'Title' => "Password reset link sent to '$email'",
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'Content' =>
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"<p>Thank you! The password reset link 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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* Create a link to the password reset form
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*
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* @param string $autoLoginHash The auto login hash
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*/
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public static function getPasswordResetLink($autoLoginHash) {
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$autoLoginHash = urldecode($autoLoginHash);
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return self::Link('changepassword') . "?h=$autoLoginHash";
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}
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/**
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* Returns a username set by setDefaultAdmin()
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*
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* @return String
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*/
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public static function get_default_username() {
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return self::$default_username;
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}
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/**
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* Returns a password set by setDefaultAdmin()
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*
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* @return String
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*/
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public static function get_default_password() {
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return self::$default_password;
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}
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/**
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* Show the "change password" page
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*
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* @return string Returns the "change password" page as HTML code.
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*/
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public function changepassword() {
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$tmpPage = new Page();
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$tmpPage->Title = 'Change your password';
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$tmpPage->URLSegment = 'Security';
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$controller = new Page_Controller($tmpPage);
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if(isset($_REQUEST['h']) && Member::autoLoginHash($_REQUEST['h'])) {
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// The auto login hash is valid, store it for the change password form
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Session::set('AutoLoginHash', $_REQUEST['h']);
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$customisedController = $controller->customise(array(
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'Content' =>
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'<p>Please enter a new password.</p>',
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'Form' => $this->ChangePasswordForm(),
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));
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} elseif(Member::currentUser()) {
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// let a logged in user change his password
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$customisedController = $controller->customise(array(
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'Content' => '<p>You can change your password below.</p>',
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'Form' => $this->ChangePasswordForm()));
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} else {
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// show an error message if the auto login hash is invalid and the
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// user is not logged in
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if(isset($_REQUEST['h'])) {
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$customisedController = $controller->customise(array('Content' =>
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"<p>The password reset link is invalid or expired.</p>\n" .
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'<p>You can request a new one <a href="' .
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$this->Link('lostpassword') .
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'">here</a> or change your password after you <a href="' .
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$this->link('login') . '">logged in</a>.</p>'));
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} else {
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self::permissionFailure($this,
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'You must be logged in in order to change your password!');
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return;
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}
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}
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Controller::$currentController = $controller;
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return $customisedController->renderWith('Page');
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}
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/**
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* Factory method for the lost password form
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*
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* @return Form Returns the lost password form
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*/
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public function ChangePasswordForm() {
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return new ChangePasswordForm($this, 'ChangePasswordForm');
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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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public 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::$default_username) && ($RAW_password == self::$default_password)
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&& !empty(self::$default_username) && !empty(self::$default_password)) {
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$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', $password = 'password') {
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$permission = DataObject::get_one("Permission", "`Code` = 'ADMIN'", true, "ID");
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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 $password String (Cleartext)
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*/
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public static function setDefaultAdmin($username, $password) {
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// don't overwrite if already set
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if(self::$default_username || self::$default_password) return false;
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self::$default_username = $username;
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self::$default_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
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* domain.
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*
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* @param boolean $strictPathChecking To enable or disable strict patch
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* checking.
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*/
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public static function setStrictPathChecking($strictPathChecking) {
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self::$strictPathChecking = $strictPathChecking;
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}
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/**
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* Get strict path checking
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*
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* @return boolean Status of strict path checking
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*/
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public static function getStrictPathChecking() {
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return self::$strictPathChecking;
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}
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/**
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* Set if passwords should be encrypted or not
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*
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* @param bool $encrypt Set to TRUE if you want that all (new) passwords
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* will be stored encrypted, FALSE if you want to
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* store the passwords in clear text.
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*/
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public static function encrypt_passwords($encrypt) {
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self::$encryptPasswords = (bool)$encrypt;
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}
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/**
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* Get a list of all available encryption algorithms
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*
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* This method tries to use PHP's hash_algos() function. If it is not
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* supported or it returns no algorithms, as a failback mechanism it tries
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* to use the md5() and sha1() function and returns them.
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*
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* @return array Returns an array of strings containing all supported
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* encryption algorithms.
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*/
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public static function get_encryption_algorithms() {
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$result = function_exists('hash_algos')
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? hash_algos()
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: array();
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if(count($result) == 0) {
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if(function_exists('md5'))
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$result[] = 'md5';
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if(function_exists('sha1'))
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$result[] = 'sha1';
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}
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return $result;
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}
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/**
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* Set the password encryption algorithm
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*
|
|
* @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.
|
|
* @param string $algorithm Optional: Use another algorithm to encrypt the
|
|
* password (so that the encryption algorithm can
|
|
* be changed over the time).
|
|
* @return mixed Returns an associative array containing the encrypted
|
|
* password and the used salt in the form
|
|
* <i>array('encrypted_password' => string, 'salt' =>
|
|
* string, 'algorithm' => string)</i>.
|
|
* If the passed algorithm is invalid, FALSE will be
|
|
* returned.
|
|
*
|
|
* @see encrypt_passwords()
|
|
* @see set_password_encryption_algorithm()
|
|
* @see get_password_encryption_details()
|
|
*/
|
|
public static function encrypt_password($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' => $algorithm);
|
|
}
|
|
|
|
|
|
/**
|
|
* Encrypt all passwords
|
|
*
|
|
* Action to encrypt all *clear text* passwords in the database according
|
|
* to the current settings.
|
|
* If the current settings are so that passwords shouldn't be encrypted,
|
|
* an explanation will be printed out.
|
|
*
|
|
* To run this action, the user needs to have administrator rights!
|
|
*/
|
|
public function encryptallpasswords() {
|
|
// Only administrators can run this method
|
|
if(!Member::currentUser() || !Member::currentUser()->isAdmin()) {
|
|
Security::permissionFailure($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>';
|
|
}
|
|
|
|
}
|
|
|
|
|
|
?>
|