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<?php
/**
* A Site entity.
*
* ElggSite represents a single site entity.
*
* An ElggSite object is an ElggEntity child class with the subtype
* of "site." It is created upon installation and hold all the
* information about a site:
* - name
* - description
* - url
*
* Every ElggEntity (except ElggSite) belongs to a site.
*
* @internal ElggSite represents a single row from the sites_entity
* table, as well as the corresponding ElggEntity row from the entities table.
*
* @warning Multiple site support isn't fully developed.
*
* @package Elgg.Core
* @subpackage DataMode.Site
* @link http://docs.elgg.org/DataModel/Sites
*/
class ElggSite extends ElggEntity {
/**
* Initialise the attributes array.
* This is vital to distinguish between metadata and base parameters.
*
* Place your base parameters here.
*
* @return void
*/
protected function initializeAttributes() {
parent::initializeAttributes();
$this->attributes['type'] = "site";
$this->attributes['name'] = NULL;
$this->attributes['description'] = NULL;
$this->attributes['url'] = NULL;
$this->attributes['tables_split'] = 2;
}
/**
* Load or create a new ElggSite.
*
* If no arguments are passed, create a new entity.
*
* If an argument is passed attempt to load a full Site entity. Arguments
* can be:
* - The GUID of a site entity.
* - A URL as stored in ElggSite->url
* - A DB result object with a guid property
*
* @param mixed $guid If an int, load that GUID. If a db row then will attempt
* to load the rest of the data.
*
* @throws IOException If passed an incorrect guid
* @throws InvalidParameterException If passed an Elgg* Entity that isn't an ElggSite
*/
function __construct($guid = null) {
$this->initializeAttributes();
// compatibility for 1.7 api.
$this->initialise_attributes(false);
if (!empty($guid)) {
// Is $guid is a DB row - either a entity row, or a site table row.
if ($guid instanceof stdClass) {
// Load the rest
if (!$this->load($guid->guid)) {
$msg = elgg_echo('IOException:FailedToLoadGUID', array(get_class(), $guid->guid));
throw new IOException($msg);
}
// Is $guid is an ElggSite? Use a copy constructor
} else if ($guid instanceof ElggSite) {
elgg_deprecated_notice('This type of usage of the ElggSite constructor was deprecated. Please use the clone method.', 1.7);
foreach ($guid->attributes as $key => $value) {
$this->attributes[$key] = $value;
}
// Is this is an ElggEntity but not an ElggSite = ERROR!
} else if ($guid instanceof ElggEntity) {
throw new InvalidParameterException(elgg_echo('InvalidParameterException:NonElggSite'));
// See if this is a URL
} else if (strpos($guid, "http") !== false) {
$guid = get_site_by_url($guid);
foreach ($guid->attributes as $key => $value) {
$this->attributes[$key] = $value;
}
// We assume if we have got this far, $guid is an int
} else if (is_numeric($guid)) {
if (!$this->load($guid)) {
throw new IOException(elgg_echo('IOException:FailedToLoadGUID', array(get_class(), $guid)));
}
} else {
throw new InvalidParameterException(elgg_echo('InvalidParameterException:UnrecognisedValue'));
}
}
}
/**
* Loads the full ElggSite when given a guid.
*
* @param int $guid Guid of ElggSite entity
*
* @return bool
* @throws InvalidClassException
*/
protected function load($guid) {
// Test to see if we have the generic stuff
if (!parent::load($guid)) {
return false;
}
// Check the type
if ($this->attributes['type'] != 'site') {
$msg = elgg_echo('InvalidClassException:NotValidElggStar', array($guid, get_class()));
throw new InvalidClassException($msg);
}
// Load missing data
$row = get_site_entity_as_row($guid);
if (($row) && (!$this->isFullyLoaded())) {
// If $row isn't a cached copy then increment the counter
$this->attributes['tables_loaded']++;
}
// Now put these into the attributes array as core values
$objarray = (array) $row;
foreach ($objarray as $key => $value) {
$this->attributes[$key] = $value;
}
// guid needs to be an int http://trac.elgg.org/ticket/4111
$this->attributes['guid'] = (int)$this->attributes['guid'];
return true;
}
/**
* Saves site-specific attributes.
*
* @internal Site attributes are saved in the sites_entity table.
*
* @return bool
*/
public function save() {
global $CONFIG;
// Save generic stuff
if (!parent::save()) {
return false;
}
// make sure the site guid is set (if not, set to self)
if (!$this->get('site_guid')) {
$guid = $this->get('guid');
update_data("UPDATE {$CONFIG->dbprefix}entities SET site_guid=$guid
WHERE guid=$guid");
}
// Now save specific stuff
return create_site_entity($this->get('guid'), $this->get('name'),
$this->get('description'), $this->get('url'));
}
/**
* Delete the site.
*
* @note You cannot delete the current site.
*
* @return bool
* @throws SecurityException
*/
public function delete() {
global $CONFIG;
if ($CONFIG->site->getGUID() == $this->guid) {
throw new SecurityException('SecurityException:deletedisablecurrentsite');
}
return parent::delete();
}
/**
* Disable the site
*
* @note You cannot disable the current site.
*
* @param string $reason Optional reason for disabling
* @param bool $recursive Recursively disable all contained entities?
*
* @return bool
* @throws SecurityException
*/
public function disable($reason = "", $recursive = true) {
global $CONFIG;
if ($CONFIG->site->getGUID() == $this->guid) {
throw new SecurityException('SecurityException:deletedisablecurrentsite');
}
return parent::disable($reason, $recursive);
}
/**
* Gets an array of ElggUser entities who are members of the site.
*
* @param array $options An associative array for key => value parameters
* accepted by elgg_get_entities(). Common parameters
* include 'limit', and 'offset'.
* Note: this was $limit before version 1.8
* @param int $offset Offset @deprecated parameter
*
* @todo remove $offset in 2.0
*
* @return array of ElggUsers
*/
public function getMembers($options = array(), $offset = 0) {
if (!is_array($options)) {
elgg_deprecated_notice("ElggSite::getMembers uses different arguments!", 1.8);
$options = array(
'limit' => $options,
'offset' => $offset,
);
}
$defaults = array(
'relationship' => 'member_of_site',
'relationship_guid' => $this->getGUID(),
'inverse_relationship' => TRUE,
'type' => 'user',
);
$options = array_merge($defaults, $options);
return elgg_get_entities_from_relationship($options);
}
/**
* List the members of this site
*
* @param array $options An associative array for key => value parameters
* accepted by elgg_list_entities(). Common parameters
* include 'full_view', 'limit', and 'offset'.
*
* @return string
* @since 1.8.0
*/
public function listMembers($options = array()) {
$defaults = array(
'relationship' => 'member_of_site',
'relationship_guid' => $this->getGUID(),
'inverse_relationship' => TRUE,
'type' => 'user',
);
$options = array_merge($defaults, $options);
return elgg_list_entities_from_relationship($options);
}
/**
* Adds a user to the site.
*
* @param int $user_guid GUID
*
* @return bool
*/
public function addUser($user_guid) {
return add_site_user($this->getGUID(), $user_guid);
}
/**
* Removes a user from the site.
*
* @param int $user_guid GUID
*
* @return bool
*/
public function removeUser($user_guid) {
return remove_site_user($this->getGUID(), $user_guid);
}
/**
* Returns an array of ElggObject entities that belong to the site.
*
* @warning This only returns objects that have been explicitly added to the
* site through addObject()
*
* @param string $subtype Entity subtype
* @param int $limit Limit
* @param int $offset Offset
*
* @return array
*/
public function getObjects($subtype = "", $limit = 10, $offset = 0) {
return get_site_objects($this->getGUID(), $subtype, $limit, $offset);
}
/**
* Adds an object to the site.
*
* @param int $object_guid GUID
*
* @return bool
*/
public function addObject($object_guid) {
return add_site_object($this->getGUID(), $object_guid);
}
/**
* Remvoes an object from the site.
*
* @param int $object_guid GUID
*
* @return bool
*/
public function removeObject($object_guid) {
return remove_site_object($this->getGUID(), $object_guid);
}
/**
* Get the collections associated with a site.
*
* @param string $subtype Subtype
* @param int $limit Limit
* @param int $offset Offset
*
* @return unknown
* @deprecated 1.8 Was never implemented
*/
public function getCollections($subtype = "", $limit = 10, $offset = 0) {
elgg_deprecated_notice("ElggSite::getCollections() is deprecated", 1.8);
get_site_collections($this->getGUID(), $subtype, $limit, $offset);
}
/*
* EXPORTABLE INTERFACE
*/
/**
* Return an array of fields which can be exported.
*
* @return array
*/
public function getExportableValues() {
return array_merge(parent::getExportableValues(), array(
'name',
'description',
'url',
));
}
/**
* Halts bootup and redirects to the site front page
* if site is in walled garden mode, no user is logged in,
* and the URL is not a public page.
*
* @link http://docs.elgg.org/Tutorials/WalledGarden
*
* @return void
* @since 1.8.0
*/
public function checkWalledGarden() {
global $CONFIG;
if ($CONFIG->walled_garden && !elgg_is_logged_in()) {
// hook into the index system call at the highest priority
elgg_register_plugin_hook_handler('index', 'system', 'elgg_walled_garden_index', 1);
if (!$this->isPublicPage()) {
$_SESSION['last_forward_from'] = current_page_url();
register_error(elgg_echo('loggedinrequired'));
forward();
}
}
}
/**
* Returns if a URL is public for this site when in Walled Garden mode.
*
* Pages are registered to be public by {@elgg_plugin_hook public_pages walled_garden}.
*
* @param string $url Defaults to the current URL.
*
* @return bool
* @since 1.8.0
*/
public function isPublicPage($url = '') {
global $CONFIG;
if (empty($url)) {
$url = current_page_url();
// do not check against URL queries
if ($pos = strpos($url, '?')) {
$url = substr($url, 0, $pos);
}
}
// always allow index page
if ($url == elgg_get_site_url($this->guid)) {
return TRUE;
}
// default public pages
$defaults = array(
'action/login',
'register',
'action/register',
'forgotpassword',
'resetpassword',
'action/user/requestnewpassword',
'action/user/passwordreset',
'action/security/refreshtoken',
'ajax/view/js/languages',
'upgrade\.php',
'css/.*',
'js/.*'
);
// include a hook for plugin authors to include public pages
$plugins = elgg_trigger_plugin_hook('public_pages', 'walled_garden', NULL, array());
// lookup admin-specific public pages
// allow public pages
foreach (array_merge($defaults, $plugins) as $public) {
$pattern = "`^{$CONFIG->url}$public/*$`i";
if (preg_match($pattern, $url)) {
return TRUE;
}
}
// non-public page
return FALSE;
}
}
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