<?php
namespace Sabre\DAV;
use Sabre\HTTP;
/**
* SabreDAV DAV client
*
* This client wraps around Curl to provide a convenient API to a WebDAV
* server.
*
* NOTE: This class is experimental, it's api will likely change in the future.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Client extends HTTP\Client {
/**
* The xml service.
*
* Uset this service to configure the property and namespace maps.
*
* @var mixed
*/
public $xml;
/**
* The elementMap
*
* This property is linked via reference to $this->xml->elementMap.
* It's deprecated as of version 3.0.0, and should no longer be used.
*
* @deprecated
* @var array
*/
public $propertyMap = [];
/**
* Base URI
*
* This URI will be used to resolve relative urls.
*
* @var string
*/
protected $baseUri;
/**
* Basic authentication
*/
const AUTH_BASIC = 1;
/**
* Digest authentication
*/
const AUTH_DIGEST = 2;
/**
* NTLM authentication
*/
const AUTH_NTLM = 4;
/**
* Identity encoding, which basically does not nothing.
*/
const ENCODING_IDENTITY = 1;
/**
* Deflate encoding
*/
const ENCODING_DEFLATE = 2;
/**
* Gzip encoding
*/
const ENCODING_GZIP = 4;
/**
* Sends all encoding headers.
*/
const ENCODING_ALL = 7;
/**
* Content-encoding
*
* @var int
*/
protected $encoding = self::ENCODING_IDENTITY;
/**
* Constructor
*
* Settings are provided through the 'settings' argument. The following
* settings are supported:
*
* * baseUri
* * userName (optional)
* * password (optional)
* * proxy (optional)
* * authType (optional)
* * encoding (optional)
*
* authType must be a bitmap, using self::AUTH_BASIC, self::AUTH_DIGEST
* and self::AUTH_NTLM. If you know which authentication method will be
* used, it's recommended to set it, as it will save a great deal of
* requests to 'discover' this information.
*
* Encoding is a bitmap with one of the ENCODING constants.
*
* @param array $settings
*/
function __construct(array $settings) {
if (!isset($settings['baseUri'])) {
throw new \InvalidArgumentException('A baseUri must be provided');
}
parent::__construct();
$this->baseUri = $settings['baseUri'];
if (isset($settings['proxy'])) {
$this->addCurlSetting(CURLOPT_PROXY, $settings['proxy']);
}
if (isset($settings['userName'])) {
$userName = $settings['userName'];
$password = isset($settings['password']) ? $settings['password'] : '';
if (isset($settings['authType'])) {
$curlType = 0;
if ($settings['authType'] & self::AUTH_BASIC) {
$curlType |= CURLAUTH_BASIC;
}
if ($settings['authType'] & self::AUTH_DIGEST) {
$curlType |= CURLAUTH_DIGEST;
}
if ($settings['authType'] & self::AUTH_NTLM) {
$curlType |= CURLAUTH_NTLM;
}
} else {
$curlType = CURLAUTH_BASIC | CURLAUTH_DIGEST;
}
$this->addCurlSetting(CURLOPT_HTTPAUTH, $curlType);
$this->addCurlSetting(CURLOPT_USERPWD, $userName . ':' . $password);
}
if (isset($settings['encoding'])) {
$encoding = $settings['encoding'];
$encodings = [];
if ($encoding & self::ENCODING_IDENTITY) {
$encodings[] = 'identity';
}
if ($encoding & self::ENCODING_DEFLATE) {
$encodings[] = 'deflate';
}
if ($encoding & self::ENCODING_GZIP) {
$encodings[] = 'gzip';
}
$this->addCurlSetting(CURLOPT_ENCODING, implode(',', $encodings));
}
$this->addCurlSetting(CURLOPT_USERAGENT, 'sabre-dav/' . Version::VERSION . ' (http://sabre.io/)');
$this->xml = new Xml\Service();
// BC
$this->propertyMap = & $this->xml->elementMap;
}
/**
* Does a PROPFIND request
*
* The list of requested properties must be specified as an array, in clark
* notation.
*
* The returned array will contain a list of filenames as keys, and
* properties as values.
*
* The properties array will contain the list of properties. Only properties
* that are actually returned from the server (without error) will be
* returned, anything else is discarded.
*
* Depth should be either 0 or 1. A depth of 1 will cause a request to be
* made to the server to also return all child resources.
*
* @param string $url
* @param array $properties
* @param int $depth
* @return array
*/
function propFind($url, array $properties, $depth = 0) {
$dom = new \DOMDocument('1.0', 'UTF-8');
$dom->formatOutput = true;
$root = $dom->createElementNS('DAV:', 'd:propfind');
$prop = $dom->createElement('d:prop');
foreach ($properties as $property) {
list(
$namespace,
$elementName
) = \Sabre\Xml\Service::parseClarkNotation($property);
if ($namespace === 'DAV:') {
$element = $dom->createElement('d:' . $elementName);
} else {
$element = $dom->createElementNS($namespace, 'x:' . $elementName);
}
$prop->appendChild($element);
}
$dom->appendChild($root)->appendChild($prop);
$body = $dom->saveXML();
$url = $this->getAbsoluteUrl($url);
$request = new HTTP\Request('PROPFIND', $url, [
'Depth' => $depth,
'Content-Type' => 'application/xml'
], $body);
$response = $this->send($request);
if ((int)$response->getStatus() >= 400) {
throw new \Sabre\HTTP\ClientHttpException($response);
}
$result = $this->parseMultiStatus($response->getBodyAsString());
// If depth was 0, we only return the top item
if ($depth === 0) {
reset($result);
$result = current($result);
return isset($result[200]) ? $result[200] : [];
}
$newResult = [];
foreach ($result as $href => $statusList) {
$newResult[$href] = isset($statusList[200]) ? $statusList[200] : [];
}
return $newResult;
}
/**
* Updates a list of properties on the server
*
* The list of properties must have clark-notation properties for the keys,
* and the actual (string) value for the value. If the value is null, an
* attempt is made to delete the property.
*
* @param string $url
* @param array $properties
* @return bool
*/
function propPatch($url, array $properties) {
$propPatch = new Xml\Request\PropPatch();
$propPatch->properties = $properties;
$xml = $this->xml->write(
'{DAV:}propertyupdate',
$propPatch
);
$url = $this->getAbsoluteUrl($url);
$request = new HTTP\Request('PROPPATCH', $url, [
'Content-Type' => 'application/xml',
], $xml);
$response = $this->send($request);
if ($response->getStatus() >= 400) {
throw new \Sabre\HTTP\ClientHttpException($response);
}
if ($response->getStatus() === 207) {
// If it's a 207, the request could still have failed, but the
// information is hidden in the response body.
$result = $this->parseMultiStatus($response->getBodyAsString());
$errorProperties = [];
foreach ($result as $href => $statusList) {
foreach ($statusList as $status => $properties) {
if ($status >= 400) {
foreach ($properties as $propName => $propValue) {
$errorProperties[] = $propName . ' (' . $status . ')';
}
}
}
}
if ($errorProperties) {
throw new \Sabre\HTTP\ClientException('PROPPATCH failed. The following properties errored: ' . implode(', ', $errorProperties));
}
}
return true;
}
/**
* Performs an HTTP options request
*
* This method returns all the features from the 'DAV:' header as an array.
* If there was no DAV header, or no contents this method will return an
* empty array.
*
* @return array
*/
function options() {
$request = new HTTP\Request('OPTIONS', $this->getAbsoluteUrl(''));
$response = $this->send($request);
$dav = $response->getHeader('Dav');
if (!$dav) {
return [];
}
$features = explode(',', $dav);
foreach ($features as &$v) {
$v = trim($v);
}
return $features;
}
/**
* Performs an actual HTTP request, and returns the result.
*
* If the specified url is relative, it will be expanded based on the base
* url.
*
* The returned array contains 3 keys:
* * body - the response body
* * httpCode - a HTTP code (200, 404, etc)
* * headers - a list of response http headers. The header names have
* been lowercased.
*
* For large uploads, it's highly recommended to specify body as a stream
* resource. You can easily do this by simply passing the result of
* fopen(..., 'r').
*
* This method will throw an exception if an HTTP error was received. Any
* HTTP status code above 399 is considered an error.
*
* Note that it is no longer recommended to use this method, use the send()
* method instead.
*
* @param string $method
* @param string $url
* @param string|resource|null $body
* @param array $headers
* @throws ClientException, in case a curl error occurred.
* @return array
*/
function request($method, $url = '', $body = null, array $headers = []) {
$url = $this->getAbsoluteUrl($url);
$response = $this->send(new HTTP\Request($method, $url, $headers, $body));
return [
'body' => $response->getBodyAsString(),
'statusCode' => (int)$response->getStatus(),
'headers' => array_change_key_case($response->getHeaders()),
];
}
/**
* Returns the full url based on the given url (which may be relative). All
* urls are expanded based on the base url as given by the server.
*
* @param string $url
* @return string
*/
function getAbsoluteUrl($url) {
// If the url starts with http:// or https://, the url is already absolute.
if (preg_match('/^http(s?):\/\//', $url)) {
return $url;
}
// If the url starts with a slash, we must calculate the url based off
// the root of the base url.
if (strpos($url, '/') === 0) {
$parts = parse_url($this->baseUri);
return $parts['scheme'] . '://' . $parts['host'] . (isset($parts['port']) ? ':' . $parts['port'] : '') . $url;
}
// Otherwise...
return $this->baseUri . $url;
}
/**
* Parses a WebDAV multistatus response body
*
* This method returns an array with the following structure
*
* [
* 'url/to/resource' => [
* '200' => [
* '{DAV:}property1' => 'value1',
* '{DAV:}property2' => 'value2',
* ],
* '404' => [
* '{DAV:}property1' => null,
* '{DAV:}property2' => null,
* ],
* ],
* 'url/to/resource2' => [
* .. etc ..
* ]
* ]
*
*
* @param string $body xml body
* @return array
*/
function parseMultiStatus($body) {
$multistatus = $this->xml->expect('{DAV:}multistatus', $body);
$result = [];
foreach ($multistatus->getResponses() as $response) {
$result[$response->getHref()] = $response->getResponseProperties();
}
return $result;
}
}
