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<?php
/**
* @file Zotlabs/Module/Dav.php
* @brief Initialize Hubzilla's cloud (SabreDAV).
*
* Module for accessing the DAV storage area from a DAV client.
*/
namespace Zotlabs\Module;
use \Sabre\DAV as SDAV;
use \Zotlabs\Storage;
require_once('include/attach.php');
require_once('include/auth.php');
require_once('include/security.php');
class Dav extends \Zotlabs\Web\Controller {
/**
* @brief Fires up the SabreDAV server.
*
*/
function init() {
foreach([ 'REDIRECT_REMOTE_USER', 'HTTP_AUTHORIZATION' ] as $head) {
/* Basic authentication */
if(array_key_exists($head,$_SERVER) && substr(trim($_SERVER[$head]),0,5) === 'Basic') {
$userpass = @base64_decode(substr(trim($_SERVER[$head]),6)) ;
if(strlen($userpass)) {
list($name, $password) = explode(':', $userpass);
$_SERVER['PHP_AUTH_USER'] = $name;
$_SERVER['PHP_AUTH_PW'] = $password;
}
break;
}
/* Signature authentication */
if(array_key_exists($head,$_SERVER) && substr(trim($_SERVER[$head]),0,9) === 'Signature') {
if($head !== 'HTTP_AUTHORIZATION') {
$_SERVER['HTTP_AUTHORIZATION'] = $_SERVER[$head];
continue;
}
$sigblock = \Zotlabs\Web\HTTPSig::parse_sigheader($_SERVER[$head]);
if($sigblock) {
$keyId = str_replace('acct:','',$sigblock['keyId']);
if($keyId) {
$r = q("select * from hubloc where hubloc_addr = '%s' limit 1",
dbesc($keyId)
);
if($r) {
$c = channelx_by_hash($r[0]['hubloc_hash']);
if($c) {
$a = q("select * from account where account_id = %d limit 1",
intval($c['channel_account_id'])
);
if($a) {
$record = [ 'channel' => $c, 'account' => $a[0] ];
$channel_login = $c['channel_id'];
}
}
}
if(! $record)
continue;
if($record) {
$verified = \Zotlabs\Web\HTTPSig::verify('',$record['channel']['channel_pubkey']);
if(! ($verified && $verified['header_signed'] && $verified['header_valid'])) {
$record = null;
}
if($record['account']) {
authenticate_success($record['account']);
if($channel_login) {
change_channel($channel_login);
}
}
break;
}
}
}
}
}
if (! is_dir('store'))
os_mkdir('store', STORAGE_DEFAULT_PERMISSIONS, false);
if (argc() > 1)
profile_load(argv(1),0);
$auth = new \Zotlabs\Storage\BasicAuth();
$auth->setRealm(ucfirst(\Zotlabs\Lib\System::get_platform_name()) . ' ' . 'WebDAV');
$rootDirectory = new \Zotlabs\Storage\Directory('/', $auth);
// A SabreDAV server-object
$server = new SDAV\Server($rootDirectory);
$authPlugin = new \Sabre\DAV\Auth\Plugin($auth);
$server->addPlugin($authPlugin);
// prevent overwriting changes each other with a lock backend
$lockBackend = new SDAV\Locks\Backend\File('store/[data]/locks');
$lockPlugin = new SDAV\Locks\Plugin($lockBackend);
$server->addPlugin($lockPlugin);
// provide a directory view for the cloud in Hubzilla
$browser = new \Zotlabs\Storage\Browser($auth);
$auth->setBrowserPlugin($browser);
// Experimental QuotaPlugin
// $server->addPlugin(new \Zotlabs\Storage\QuotaPlugin($auth));
// All we need to do now, is to fire up the server
$server->exec();
killme();
}
}
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