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<?php
/**
* ownCloud
*
* @author Bjoern Schiessle
* @copyright 2012 Bjoern Schiessle <schiessle@owncloud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
class OC_Connector_Sabre_Client extends Sabre_DAV_Client {
protected $trustedCertificates;
/**
* Add trusted root certificates to the webdav client.
*
* The parameter certificates should be a absulute path to a file which contains
* all trusted certificates
*
* @param string $certificates
*/
public function addTrustedCertificates($certificates) {
$this->trustedCertificates = $certificates;
}
/**
* Copied from SabreDAV with some modification to use user defined curlSettings
* 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.
*
* @param string $method
* @param string $url
* @param string $body
* @param array $headers
* @return array
*/
public function request($method, $url = '', $body = null, $headers = array()) {
$url = $this->getAbsoluteUrl($url);
$curlSettings = array(
CURLOPT_RETURNTRANSFER => true,
// Return headers as part of the response
CURLOPT_HEADER => true,
CURLOPT_POSTFIELDS => $body,
// Automatically follow redirects
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_MAXREDIRS => 5,
CURLOPT_SSL_VERIFYPEER => true,
//CURLOPT_SSL_VERIFYPEER => false,
);
if($this->trustedCertificates) {
$curlSettings[CURLOPT_CAINFO] = $this->trustedCertificates;
}
switch ($method) {
case 'PUT':
$curlSettings[CURLOPT_PUT] = true;
break;
case 'HEAD' :
// do not read body with HEAD requests (this is neccessary because cURL does not ignore the body with HEAD
// requests when the Content-Length header is given - which in turn is perfectly valid according to HTTP
// specs...) cURL does unfortunately return an error in this case ("transfer closed transfer closed with
// ... bytes remaining to read") this can be circumvented by explicitly telling cURL to ignore the
// response body
$curlSettings[CURLOPT_NOBODY] = true;
$curlSettings[CURLOPT_CUSTOMREQUEST] = 'HEAD';
break;
default:
$curlSettings[CURLOPT_CUSTOMREQUEST] = $method;
break;
}
// Adding HTTP headers
$nHeaders = array();
foreach($headers as $key=>$value) {
$nHeaders[] = $key . ': ' . $value;
}
$curlSettings[CURLOPT_HTTPHEADER] = $nHeaders;
if ($this->proxy) {
$curlSettings[CURLOPT_PROXY] = $this->proxy;
}
if ($this->userName) {
$curlSettings[CURLOPT_HTTPAUTH] = CURLAUTH_BASIC | CURLAUTH_DIGEST;
$curlSettings[CURLOPT_USERPWD] = $this->userName . ':' . $this->password;
}
list(
$response,
$curlInfo,
$curlErrNo,
$curlError
) = $this->curlRequest($url, $curlSettings);
$headerBlob = substr($response, 0, $curlInfo['header_size']);
$response = substr($response, $curlInfo['header_size']);
// In the case of 100 Continue, or redirects we'll have multiple lists
// of headers for each separate HTTP response. We can easily split this
// because they are separated by \r\n\r\n
$headerBlob = explode("\r\n\r\n", trim($headerBlob, "\r\n"));
// We only care about the last set of headers
$headerBlob = $headerBlob[count($headerBlob)-1];
// Splitting headers
$headerBlob = explode("\r\n", $headerBlob);
$headers = array();
foreach($headerBlob as $header) {
$parts = explode(':', $header, 2);
if (count($parts)==2) {
$headers[strtolower(trim($parts[0]))] = trim($parts[1]);
}
}
$response = array(
'body' => $response,
'statusCode' => $curlInfo['http_code'],
'headers' => $headers
);
if ($curlErrNo) {
throw new Sabre_DAV_Exception('[CURL] Error while making request: ' . $curlError . ' (error code: ' . $curlErrNo . ')');
}
if ($response['statusCode']>=400) {
switch ($response['statusCode']) {
case 404:
throw new Sabre_DAV_Exception_NotFound('Resource ' . $url . ' not found.');
break;
default:
throw new Sabre_DAV_Exception('HTTP error response. (errorcode ' . $response['statusCode'] . ')');
}
}
return $response;
}
}
|
