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<?php
/**
* Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Security;
use OC\Files\Filesystem;
use OCP\ICertificateManager;
/**
* Manage trusted certificates for users
*/
class CertificateManager implements ICertificateManager {
/**
* @var string
*/
protected $uid;
/**
* @var \OC\Files\View
*/
protected $view;
/**
* @param string $uid
* @param \OC\Files\View $view relative zu data/
*/
public function __construct($uid, \OC\Files\View $view) {
$this->uid = $uid;
$this->view = $view;
}
/**
* Returns all certificates trusted by the user
*
* @return \OCP\ICertificate[]
*/
public function listCertificates() {
$path = $this->getPathToCertificates() . 'uploads/';
if (!$this->view->is_dir($path)) {
return array();
}
$result = array();
$handle = $this->view->opendir($path);
if (!is_resource($handle)) {
return array();
}
while (false !== ($file = readdir($handle))) {
if ($file != '.' && $file != '..') {
try {
$result[] = new Certificate($this->view->file_get_contents($path . $file), $file);
} catch(\Exception $e) {}
}
}
closedir($handle);
return $result;
}
/**
* create the certificate bundle of all trusted certificated
*/
protected function createCertificateBundle() {
$path = $this->getPathToCertificates();
$certs = $this->listCertificates();
$fh_certs = $this->view->fopen($path . '/rootcerts.crt', 'w');
foreach ($certs as $cert) {
$file = $path . '/uploads/' . $cert->getName();
$data = $this->view->file_get_contents($file);
if (strpos($data, 'BEGIN CERTIFICATE')) {
fwrite($fh_certs, $data);
fwrite($fh_certs, "\r\n");
}
}
fclose($fh_certs);
}
/**
* Save the certificate and re-generate the certificate bundle
*
* @param string $certificate the certificate data
* @param string $name the filename for the certificate
* @return \OCP\ICertificate|void|bool
* @throws \Exception If the certificate could not get added
*/
public function addCertificate($certificate, $name) {
if (!Filesystem::isValidPath($name) or Filesystem::isFileBlacklisted($name)) {
return false;
}
$dir = $this->getPathToCertificates() . 'uploads/';
if (!$this->view->file_exists($dir)) {
$this->view->mkdir($dir);
}
try {
$file = $dir . $name;
$certificateObject = new Certificate($certificate, $name);
$this->view->file_put_contents($file, $certificate);
$this->createCertificateBundle();
return $certificateObject;
} catch (\Exception $e) {
throw $e;
}
}
/**
* Remove the certificate and re-generate the certificate bundle
*
* @param string $name
* @return bool
*/
public function removeCertificate($name) {
if (!Filesystem::isValidPath($name)) {
return false;
}
$path = $this->getPathToCertificates() . 'uploads/';
if ($this->view->file_exists($path . $name)) {
$this->view->unlink($path . $name);
$this->createCertificateBundle();
}
return true;
}
/**
* Get the path to the certificate bundle for this user
*
* @return string
*/
public function getCertificateBundle() {
return $this->getPathToCertificates() . 'rootcerts.crt';
}
private function getPathToCertificates() {
$path = is_null($this->uid) ? '/files_external/' : '/' . $this->uid . '/files_external/';
return $path;
}
}
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