diff options
Diffstat (limited to 'mod/dav.php')
| -rw-r--r-- | mod/dav.php | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/mod/dav.php b/mod/dav.php new file mode 100644 index 000000000..1bff5ffbc --- /dev/null +++ b/mod/dav.php @@ -0,0 +1,153 @@ +<?php +/** + * @file mod/dav.php + * @brief Initialize RedMatrix's cloud (SabreDAV). + * + * Module for accessing the DAV storage area from a DAV client. + */ + +use Sabre\DAV; +use RedMatrix\RedDAV; + +// composer autoloader for SabreDAV +require_once('vendor/autoload.php'); + +// workaround for HTTP-auth in CGI mode +if (x($_SERVER, 'REDIRECT_REMOTE_USER')) { + $userpass = base64_decode(substr($_SERVER["REDIRECT_REMOTE_USER"], 6)) ; + if(strlen($userpass)) { + list($name, $password) = explode(':', $userpass); + $_SERVER['PHP_AUTH_USER'] = $name; + $_SERVER['PHP_AUTH_PW'] = $password; + } +} + +if (x($_SERVER, 'HTTP_AUTHORIZATION')) { + $userpass = base64_decode(substr($_SERVER["HTTP_AUTHORIZATION"], 6)) ; + if(strlen($userpass)) { + list($name, $password) = explode(':', $userpass); + $_SERVER['PHP_AUTH_USER'] = $name; + $_SERVER['PHP_AUTH_PW'] = $password; + } +} + +/** + * @brief Fires up the SabreDAV server. + * + * @param App &$a + */ +function dav_init(&$a) { + // call ($currenttheme)_init since we're operating outside of index.php + $theme_info_file = "view/theme/" . current_theme() . "/php/theme.php"; + if (file_exists($theme_info_file)){ + require_once($theme_info_file); + if (function_exists(str_replace('-', '_', current_theme()) . '_init')) { + $func = str_replace('-', '_', current_theme()) . '_init'; + $func($a); + } + } + + require_once('include/reddav.php'); + + if (! is_dir('store')) + os_mkdir('store', STORAGE_DEFAULT_PERMISSIONS, false); + + $which = null; + if (argc() > 1) + $which = argv(1); + + $profile = 0; + + $a->page['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . $a->get_baseurl() . '/feed/' . $which . '" />' . "\r\n"; + + if ($which) + profile_load($a, $which, $profile); + + $auth = new RedDAV\RedBasicAuth(); + + $ob_hash = get_observer_hash(); + + if ($ob_hash) { + if (local_user()) { + $channel = $a->get_channel(); + $auth->setCurrentUser($channel['channel_address']); + $auth->channel_id = $channel['channel_id']; + $auth->channel_hash = $channel['channel_hash']; + $auth->channel_account_id = $channel['channel_account_id']; + if($channel['channel_timezone']) + $auth->setTimezone($channel['channel_timezone']); + } + $auth->observer = $ob_hash; + } + + if ($_GET['davguest']) + $_SESSION['davguest'] = true; + + $_SERVER['QUERY_STRING'] = str_replace(array('?f=', '&f='), array('', ''), $_SERVER['QUERY_STRING']); + $_SERVER['QUERY_STRING'] = strip_zids($_SERVER['QUERY_STRING']); + $_SERVER['QUERY_STRING'] = preg_replace('/[\?&]davguest=(.*?)([\?&]|$)/ism', '', $_SERVER['QUERY_STRING']); + + $_SERVER['REQUEST_URI'] = str_replace(array('?f=', '&f='), array('', ''), $_SERVER['REQUEST_URI']); + $_SERVER['REQUEST_URI'] = strip_zids($_SERVER['REQUEST_URI']); + $_SERVER['REQUEST_URI'] = preg_replace('/[\?&]davguest=(.*?)([\?&]|$)/ism', '', $_SERVER['REQUEST_URI']); + + $rootDirectory = new RedDAV\RedDirectory('/', $auth); + + // A SabreDAV server-object + $server = new DAV\Server($rootDirectory); + // prevent overwriting changes each other with a lock backend + $lockBackend = new DAV\Locks\Backend\File('store/[data]/locks'); + $lockPlugin = new DAV\Locks\Plugin($lockBackend); + + $server->addPlugin($lockPlugin); + + // The next section of code allows us to bypass prompting for http-auth if a + // FILE is being accessed anonymously and permissions allow this. This way + // one can create hotlinks to public media files in their cloud and anonymous + // viewers won't get asked to login. + // If a DIRECTORY is accessed or there are permission issues accessing the + // file and we aren't previously authenticated via zot, prompt for HTTP-auth. + // This will be the default case for mounting a DAV directory. + // In order to avoid prompting for passwords for viewing a DIRECTORY, add + // the URL query parameter 'davguest=1'. + + $isapublic_file = false; + $davguest = ((x($_SESSION, 'davguest')) ? true : false); + + if ((! $auth->observer) && ($_SERVER['REQUEST_METHOD'] === 'GET')) { + try { + $x = RedFileData('/' . $a->cmd, $auth); + if($x instanceof RedDAV\RedFile) + $isapublic_file = true; + } + catch (Exception $e) { + $isapublic_file = false; + } + } + + if ((! $auth->observer) && (! $isapublic_file) && (! $davguest)) { + try { + $auth->Authenticate($server, t('RedMatrix channel')); + } + catch (Exception $e) { + logger('mod_cloud: auth exception' . $e->getMessage()); + http_status_exit($e->getHTTPCode(), $e->getMessage()); + } + } + + require_once('include/RedDAV/RedBrowser.php'); + // provide a directory view for the cloud in Red Matrix + $browser = new RedDAV\RedBrowser($auth); + $auth->setBrowserPlugin($browser); + + $server->addPlugin($browser); + + // Experimental QuotaPlugin +// require_once('include/RedDAV/QuotaPlugin.php'); +// $server->addPlugin(new RedDAV\QuotaPlugin($auth)); + + // All we need to do now, is to fire up the server + $server->exec(); + + killme(); +} |