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<?php
namespace Sabre\DAV;
/**
* This class holds all the information about a PROPFIND request.
*
* It contains the type of PROPFIND request, which properties were requested
* and also the returned items.
*/
class PropFind {
/**
* A normal propfind
*/
const NORMAL = 0;
/**
* An allprops request.
*
* While this was originally intended for instructing the server to really
* fetch every property, because it was used so often and it's so heavy
* this turned into a small list of default properties after a while.
*
* So 'all properties' now means a hardcoded list.
*/
const ALLPROPS = 1;
/**
* A propname request. This just returns a list of properties that are
* defined on a node, without their values.
*/
const PROPNAME = 2;
/**
* Creates the PROPFIND object
*
* @param string $path
* @param array $properties
* @param int $depth
* @param int $requestType
*/
function __construct($path, array $properties, $depth = 0, $requestType = self::NORMAL) {
$this->path = $path;
$this->properties = $properties;
$this->depth = $depth;
$this->requestType = $requestType;
if ($requestType === self::ALLPROPS) {
$this->properties = [
'{DAV:}getlastmodified',
'{DAV:}getcontentlength',
'{DAV:}resourcetype',
'{DAV:}quota-used-bytes',
'{DAV:}quota-available-bytes',
'{DAV:}getetag',
'{DAV:}getcontenttype',
];
}
foreach ($this->properties as $propertyName) {
// Seeding properties with 404's.
$this->result[$propertyName] = [404, null];
}
$this->itemsLeft = count($this->result);
}
/**
* Handles a specific property.
*
* This method checks wether the specified property was requested in this
* PROPFIND request, and if so, it will call the callback and use the
* return value for it's value.
*
* Example:
*
* $propFind->handle('{DAV:}displayname', function() {
* return 'hello';
* });
*
* Note that handle will only work the first time. If null is returned, the
* value is ignored.
*
* It's also possible to not pass a callback, but immediately pass a value
*
* @param string $propertyName
* @param mixed $valueOrCallBack
* @return void
*/
function handle($propertyName, $valueOrCallBack) {
if ($this->itemsLeft && isset($this->result[$propertyName]) && $this->result[$propertyName][0] === 404) {
if (is_callable($valueOrCallBack)) {
$value = $valueOrCallBack();
} else {
$value = $valueOrCallBack;
}
if (!is_null($value)) {
$this->itemsLeft--;
$this->result[$propertyName] = [200, $value];
}
}
}
/**
* Sets the value of the property
*
* If status is not supplied, the status will default to 200 for non-null
* properties, and 404 for null properties.
*
* @param string $propertyName
* @param mixed $value
* @param int $status
* @return void
*/
function set($propertyName, $value, $status = null) {
if (is_null($status)) {
$status = is_null($value) ? 404 : 200;
}
// If this is an ALLPROPS request and the property is
// unknown, add it to the result; else ignore it:
if (!isset($this->result[$propertyName])) {
if ($this->requestType === self::ALLPROPS) {
$this->result[$propertyName] = [$status, $value];
}
return;
}
if ($status !== 404 && $this->result[$propertyName][0] === 404) {
$this->itemsLeft--;
} elseif ($status === 404 && $this->result[$propertyName][0] !== 404) {
$this->itemsLeft++;
}
$this->result[$propertyName] = [$status, $value];
}
/**
* Returns the current value for a property.
*
* @param string $propertyName
* @return mixed
*/
function get($propertyName) {
return isset($this->result[$propertyName]) ? $this->result[$propertyName][1] : null;
}
/**
* Returns the current status code for a property name.
*
* If the property does not appear in the list of requested properties,
* null will be returned.
*
* @param string $propertyName
* @return int|null
*/
function getStatus($propertyName) {
return isset($this->result[$propertyName]) ? $this->result[$propertyName][0] : null;
}
/**
* Updates the path for this PROPFIND.
*
* @param string $path
* @return void
*/
function setPath($path) {
$this->path = $path;
}
/**
* Returns the path this PROPFIND request is for.
*
* @return string
*/
function getPath() {
return $this->path;
}
/**
* Returns the depth of this propfind request.
*
* @return int
*/
function getDepth() {
return $this->depth;
}
/**
* Updates the depth of this propfind request.
*
* @param int $depth
* @return void
*/
function setDepth($depth) {
$this->depth = $depth;
}
/**
* Returns all propertynames that have a 404 status, and thus don't have a
* value yet.
*
* @return array
*/
function get404Properties() {
if ($this->itemsLeft === 0) {
return [];
}
$result = [];
foreach ($this->result as $propertyName => $stuff) {
if ($stuff[0] === 404) {
$result[] = $propertyName;
}
}
return $result;
}
/**
* Returns the full list of requested properties.
*
* This returns just their names, not a status or value.
*
* @return array
*/
function getRequestedProperties() {
return $this->properties;
}
/**
* Returns true if this was an '{DAV:}allprops' request.
*
* @return bool
*/
function isAllProps() {
return $this->requestType === self::ALLPROPS;
}
/**
* Returns a result array that's often used in multistatus responses.
*
* The array uses status codes as keys, and property names and value pairs
* as the value of the top array.. such as :
*
* [
* 200 => [ '{DAV:}displayname' => 'foo' ],
* ]
*
* @return array
*/
function getResultForMultiStatus() {
$r = [
200 => [],
404 => [],
];
foreach ($this->result as $propertyName => $info) {
if (!isset($r[$info[0]])) {
$r[$info[0]] = [$propertyName => $info[1]];
} else {
$r[$info[0]][$propertyName] = $info[1];
}
}
// Removing the 404's for multi-status requests.
if ($this->requestType === self::ALLPROPS) unset($r[404]);
return $r;
}
/**
* The path that we're fetching properties for.
*
* @var string
*/
protected $path;
/**
* The Depth of the request.
*
* 0 means only the current item. 1 means the current item + its children.
* It can also be DEPTH_INFINITY if this is enabled in the server.
*
* @var int
*/
protected $depth = 0;
/**
* The type of request. See the TYPE constants
*/
protected $requestType;
/**
* A list of requested properties
*
* @var array
*/
protected $properties = [];
/**
* The result of the operation.
*
* The keys in this array are property names.
* The values are an array with two elements: the http status code and then
* optionally a value.
*
* Example:
*
* [
* "{DAV:}owner" : [404],
* "{DAV:}displayname" : [200, "Admin"]
* ]
*
* @var array
*/
protected $result = [];
/**
* This is used as an internal counter for the number of properties that do
* not yet have a value.
*
* @var int
*/
protected $itemsLeft;
}
|
