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<?php
namespace Sabre\DAVACL\Property;
use Sabre\DAV;
/**
* This class represents the {DAV:}acl property
*
* @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Acl extends DAV\Property {
/**
* List of privileges
*
* @var array
*/
private $privileges;
/**
* Whether or not the server base url is required to be prefixed when
* serializing the property.
*
* @var boolean
*/
private $prefixBaseUrl;
/**
* Constructor
*
* This object requires a structure similar to the return value from
* Sabre\DAVACL\Plugin::getACL().
*
* Each privilege is a an array with at least a 'privilege' property, and a
* 'principal' property. A privilege may have a 'protected' property as
* well.
*
* The prefixBaseUrl should be set to false, if the supplied principal urls
* are already full urls. If this is kept to true, the servers base url
* will automatically be prefixed.
*
* @param bool $prefixBaseUrl
* @param array $privileges
*/
public function __construct(array $privileges, $prefixBaseUrl = true) {
$this->privileges = $privileges;
$this->prefixBaseUrl = $prefixBaseUrl;
}
/**
* Returns the list of privileges for this property
*
* @return array
*/
public function getPrivileges() {
return $this->privileges;
}
/**
* Serializes the property into a DOMElement
*
* @param DAV\Server $server
* @param \DOMElement $node
* @return void
*/
public function serialize(DAV\Server $server,\DOMElement $node) {
$doc = $node->ownerDocument;
foreach($this->privileges as $ace) {
$this->serializeAce($doc, $node, $ace, $server);
}
}
/**
* Unserializes the {DAV:}acl xml element.
*
* @param \DOMElement $dom
* @return Acl
*/
static public function unserialize(\DOMElement $dom) {
$privileges = array();
$xaces = $dom->getElementsByTagNameNS('urn:DAV','ace');
for($ii=0; $ii < $xaces->length; $ii++) {
$xace = $xaces->item($ii);
$principal = $xace->getElementsByTagNameNS('urn:DAV','principal');
if ($principal->length !== 1) {
throw new DAV\Exception\BadRequest('Each {DAV:}ace element must have one {DAV:}principal element');
}
$principal = Principal::unserialize($principal->item(0));
switch($principal->getType()) {
case Principal::HREF :
$principal = $principal->getHref();
break;
case Principal::AUTHENTICATED :
$principal = '{DAV:}authenticated';
break;
case Principal::UNAUTHENTICATED :
$principal = '{DAV:}unauthenticated';
break;
case Principal::ALL :
$principal = '{DAV:}all';
break;
}
$protected = false;
if ($xace->getElementsByTagNameNS('urn:DAV','protected')->length > 0) {
$protected = true;
}
$grants = $xace->getElementsByTagNameNS('urn:DAV','grant');
if ($grants->length < 1) {
throw new DAV\Exception\NotImplemented('Every {DAV:}ace element must have a {DAV:}grant element. {DAV:}deny is not yet supported');
}
$grant = $grants->item(0);
$xprivs = $grant->getElementsByTagNameNS('urn:DAV','privilege');
for($jj=0; $jj<$xprivs->length; $jj++) {
$xpriv = $xprivs->item($jj);
$privilegeName = null;
for ($kk=0;$kk<$xpriv->childNodes->length;$kk++) {
$childNode = $xpriv->childNodes->item($kk);
if ($t = DAV\XMLUtil::toClarkNotation($childNode)) {
$privilegeName = $t;
break;
}
}
if (is_null($privilegeName)) {
throw new DAV\Exception\BadRequest('{DAV:}privilege elements must have a privilege element contained within them.');
}
$privileges[] = array(
'principal' => $principal,
'protected' => $protected,
'privilege' => $privilegeName,
);
}
}
return new self($privileges);
}
/**
* Serializes a single access control entry.
*
* @param \DOMDocument $doc
* @param \DOMElement $node
* @param array $ace
* @param DAV\Server $server
* @return void
*/
private function serializeAce($doc,$node,$ace, DAV\Server $server) {
$xace = $doc->createElementNS('DAV:','d:ace');
$node->appendChild($xace);
$principal = $doc->createElementNS('DAV:','d:principal');
$xace->appendChild($principal);
switch($ace['principal']) {
case '{DAV:}authenticated' :
$principal->appendChild($doc->createElementNS('DAV:','d:authenticated'));
break;
case '{DAV:}unauthenticated' :
$principal->appendChild($doc->createElementNS('DAV:','d:unauthenticated'));
break;
case '{DAV:}all' :
$principal->appendChild($doc->createElementNS('DAV:','d:all'));
break;
default:
$principal->appendChild($doc->createElementNS('DAV:','d:href',($this->prefixBaseUrl?$server->getBaseUri():'') . $ace['principal'] . '/'));
}
$grant = $doc->createElementNS('DAV:','d:grant');
$xace->appendChild($grant);
$privParts = null;
preg_match('/^{([^}]*)}(.*)$/',$ace['privilege'],$privParts);
$xprivilege = $doc->createElementNS('DAV:','d:privilege');
$grant->appendChild($xprivilege);
$xprivilege->appendChild($doc->createElementNS($privParts[1],'d:'.$privParts[2]));
if (isset($ace['protected']) && $ace['protected'])
$xace->appendChild($doc->createElement('d:protected'));
}
}
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