* @copyright (c) 2007-12 by Ralf Becker * @version $Id$ */ require_once('HTTP/WebDAV/Server.php'); /** * EGroupware: GroupDAV access * * Using a modified PEAR HTTP/WebDAV/Server class from egw-pear! * * One can use the following url's releative (!) to http://domain.com/egroupware/groupdav.php * * - / base of Cal|Card|GroupDAV tree, only certain clients (KDE, Apple) can autodetect folders from here * - /principals/ principal-collection-set for WebDAV ACL * - /principals/users// * - /principals/groups// * - // users home-set with * - //addressbook/ addressbook of user or group given the user has rights to view it * - //addressbook-/ shared addressbooks from other user or group * - //addressbook-accounts/ all accounts current user has rights to see * - //calendar/ calendar of user given the user has rights to view it * - //calendar-/ shared calendar from other user or group * - //inbox/ scheduling inbox of user * - //outbox/ scheduling outbox of user * - //infolog/ InfoLog's of user given the user has rights to view it * - /addressbook/ all addressbooks current user has rights to, announced as directory-gateway now * - /addressbook-accounts/ all accounts current user has rights to see * - /calendar/ calendar of current user * - /infolog/ infologs of current user * * Calling one of the above collections with a GET request / regular browser generates an automatic index * from the data of a allprop PROPFIND, allow to browse CalDAV/CardDAV/GroupDAV tree with a regular browser. * * Permanent error_log() calls should use groupdav->log($str) instead, to be send to PHP error_log() * and our request-log (prefixed with "### " after request and response, like exceptions). * * @link http://www.groupdav.org/ GroupDAV spec * @link http://caldav.calconnect.org/ CalDAV resources * @link http://carddav.calconnect.org/ CardDAV resources * @link http://calendarserver.org/ Apple calendar and contacts server */ class groupdav extends HTTP_WebDAV_Server { /** * DAV namespace */ const DAV = 'DAV:'; /** * GroupDAV namespace */ const GROUPDAV = 'http://groupdav.org/'; /** * CalDAV namespace */ const CALDAV = 'urn:ietf:params:xml:ns:caldav'; /** * CardDAV namespace */ const CARDDAV = 'urn:ietf:params:xml:ns:carddav'; /** * Apple Calendarserver namespace (eg. for ctag) */ const CALENDARSERVER = 'http://calendarserver.org/ns/'; /** * Apple Addressbookserver namespace (eg. for ctag) */ const ADDRESSBOOKSERVER = 'http://addressbookserver.org/ns/'; /** * Apple iCal namespace (eg. for calendar color) */ const ICAL = 'http://apple.com/ns/ical/'; /** * Realm and powered by string */ const REALM = 'EGroupware CalDAV/CardDAV/GroupDAV server'; var $dav_powered_by = self::REALM; var $http_auth_realm = self::REALM; /** * Folders in root or user home * * @var array */ var $root = array( 'addressbook' => array( 'resourcetype' => array(self::GROUPDAV => 'vcard-collection', self::CARDDAV => 'addressbook'), 'component-set' => array(self::GROUPDAV => 'VCARD'), ), 'calendar' => array( 'resourcetype' => array(self::GROUPDAV => 'vevent-collection', self::CALDAV => 'calendar'), 'component-set' => array(self::GROUPDAV => 'VEVENT'), ), 'inbox' => array( 'resourcetype' => array(self::CALDAV => 'schedule-inbox'), 'app' => 'calendar', 'user-only' => true, // display just in user home ), 'outbox' => array( 'resourcetype' => array(self::CALDAV => 'schedule-outbox'), 'app' => 'calendar', 'user-only' => true, // display just in user home ), 'infolog' => array( 'resourcetype' => array(self::GROUPDAV => 'vtodo-collection', self::CALDAV => 'calendar'), 'component-set' => array(self::GROUPDAV => 'VTODO'), ), ); /** * Debug level: 0 = nothing, 1 = function calls, 2 = more info, 3 = complete $_SERVER array * * Can now be enabled on a per user basis in GroupDAV prefs, if it is set here to 0! * * The debug messages are send to the apache error_log * * @var integer */ var $debug = 0; /** * eGW's charset * * @var string */ var $egw_charset; /** * Instance of our application specific handler * * @var groupdav_handler */ var $handler; /** * current-user-principal URL * * @var string */ var $current_user_principal; /** * Reference to the accounts class * * @var accounts */ var $accounts; /** * Supported privileges with name and description * * privileges are hierarchical * * @var array */ var $supported_privileges = array( 'all' => array( '*description*' => 'all privileges', 'read' => array( '*description*' => 'read resource', 'read-free-busy' => array( '*ns*' => self::CALDAV, '*description*' => 'allow free busy report query', '*only*' => '/calendar/', ), ), 'write' => array( '*description*' => 'write resource', 'write-properties' => 'write resource properties', 'write-content' => 'write resource content', 'bind' => 'add child resource', 'unbind' => 'remove child resource', ), 'unlock' => 'unlock resource without ownership of lock', 'read-acl' => 'read resource access control list', 'write-acl' => 'write resource access control list', 'read-current-user-privilege-set' => 'read privileges for current principal', 'schedule-deliver' => array( '*ns*' => self::CALDAV, '*description*' => 'schedule privileges for current principal', '*only*' => '/inbox/', ), 'schedule-send' => array( '*ns*' => self::CALDAV, '*description*' => 'schedule privileges for current principal', '*only*' => '/outbox/', ), ), ); /** * $options parameter to PROPFIND request, eg. to check what props are requested * * @var array */ var $propfind_options; function __construct() { if (!$this->debug) $this->debug = (int)$GLOBALS['egw_info']['user']['preferences']['groupdav']['debug_level']; if ($this->debug > 2) error_log('groupdav: $_SERVER='.array2string($_SERVER)); // setting our own exception handler, to be able to still log the requests set_exception_handler(array(__CLASS__,'exception_handler')); // crrnd: client refuses redundand namespace declarations // cnrnd: client needs redundand namespace declarations // setting redundand namespaces as the default for (Cal|Card|Group)DAV, as the majority of the clients either require or can live with it $this->cnrnd = true; // identify clients, which do NOT support path AND full url in of PROPFIND request switch(($agent = groupdav_handler::get_agent())) { case 'akonadi': $this->cnrnd = true; // Akonadi seems to require redundant namespaces, see KDE bug #265096 https://bugs.kde.org/show_bug.cgi?id=265096 break; case 'kde': // KAddressbook (at least in 3.5 can NOT subscribe / does NOT find addressbook) $this->client_require_href_as_url = true; $this->cnrnd = false; // KDE before Akonadi seems NOT to work with cnrnd (redundant namespaces) break; case 'cfnetwork': // Apple addressbook app case 'dataaccess': // iPhone addressbook $this->client_require_href_as_url = false; $this->cnrnd = true; break; case 'davkit': // iCal app in OS X 10.6 created wrong request, if full url given case 'coredav': // iCal app in OS X 10.7 case 'calendarstore': // Apple iCal 5.0.1 under OS X 10.7.2 $this->client_require_href_as_url = false; $this->cnrnd = true; break; case 'cfnetwork_old': $this->crrnd = true; // Older Apple Addressbook.app does not cope with namespace redundancy break; case 'neon': $this->cnrnd = true; // neon clients like cadaver break; } if ($this->debug) error_log(__METHOD__."() HTTP_USER_AGENT='$_SERVER[HTTP_USER_AGENT]' --> '$agent' --> client_requires_href_as_url=$this->client_require_href_as_url, crrnd(client refuses redundand namespace declarations)=$this->crrnd, cnrnd(client needs redundand namespace declarations)=$this->cnrnd"); // adding EGroupware version to X-Dav-Powered-By header eg. "EGroupware 1.8.001 CalDAV/CardDAV/GroupDAV server" $this->dav_powered_by = str_replace('EGroupware','EGroupware '.$GLOBALS['egw_info']['server']['versions']['phpgwapi'], $this->dav_powered_by); parent::HTTP_WebDAV_Server(); // hack to allow to use query parameters in WebDAV, which HTTP_WebDAV_Server interprets as part of the path list($this->_SERVER['REQUEST_URI']) = explode('?',$this->_SERVER['REQUEST_URI']); /*if (substr($this->_SERVER['REQUEST_URI'],-13) == '/;add-member/') { $_GET['add-member'] = ''; $this->_SERVER['REQUEST_URI'] = substr($this->_SERVER['REQUEST_URI'],0,-12); }*/ //error_log($_SERVER['REQUEST_URI']." --> ".$this->_SERVER['REQUEST_URI']); $this->egw_charset = translation::charset(); if (strpos($this->base_uri, 'http') === 0) { $this->current_user_principal = $this->_slashify($this->base_uri); } else { $this->current_user_principal = (@$_SERVER["HTTPS"] === "on" ? "https:" : "http:") . '//' . $_SERVER['HTTP_HOST'] . $_SERVER['SCRIPT_NAME'] . '/'; } $this->current_user_principal .= 'principals/users/'.$GLOBALS['egw_info']['user']['account_lid'].'/'; // if client requires pathes instead of URLs if (!$this->client_require_href_as_url) { $this->current_user_principal = parse_url($this->current_user_principal,PHP_URL_PATH); } $this->accounts = $GLOBALS['egw']->accounts; } /** * get the handler for $app * * @param string $app * @return groupdav_handler */ function app_handler($app) { if (isset($this->root[$app]['app'])) $app = $this->root[$app]['app']; return groupdav_handler::app_handler($app,$this); } /** * OPTIONS request, allow to modify the standard responses from the pear-class * * @param string $path * @param array &$dav * @param array &$allow */ function OPTIONS($path, &$dav, &$allow) { // locking support if (!in_array('2', $dav)) $dav[] = '2'; if (preg_match('#/(calendar(-[^/]+)?|inbox|outbox)/#', $path)) // eg. //calendar-/ { $app = 'calendar'; } elseif (preg_match('#/addressbook(-[^/]+)?/#', $path)) // eg. //addressbook-/ { $app = 'addressbook'; } // CalDAV and CardDAV $dav[] = 'access-control'; if ($app !== 'addressbook') // CalDAV { $dav[] = 'calendar-access'; $dav[] = 'calendar-auto-schedule'; $dav[] = 'calendar-proxy'; // required by iOS iCal to use principal-property-search to autocomplete participants (and locations) $dav[] = 'calendarserver-principal-property-search'; // required by iOS & OS X iCal to show private checkbox (X-CALENDARSERVER-ACCESS: CONFIDENTIAL on VCALENDAR) $dav[] = 'calendarserver-private-events'; // other capabilities calendarserver announces //$dav[] = 'calendar-schedule'; //$dav[] = 'calendar-availability'; //$dav[] = 'inbox-availability'; //$dav[] = 'calendarserver-private-comments'; //$dav[] = 'calendarserver-sharing'; //$dav[] = 'calendarserver-sharing-no-scheduling'; } if ($app !== 'calendar') // CardDAV { $dav[] = 'addressbook'; // CardDAV uses "addressbook" NOT "addressbook-access" } //error_log(__METHOD__."('$path') --> app='$app' --> DAV: ".implode(', ', $dav)); } /** * PROPFIND and REPORT method handler * * @param array general parameter passing array * @param array return array for file properties * @return bool true on success */ function PROPFIND(&$options, &$files, $method='PROPFIND') { if ($this->debug) error_log(__CLASS__."::$method(".array2string($options).')'); // make options (readonly) available to all class methods, eg. prop_requested $this->propfind_options = $options; // parse path in form [/account_lid]/app[/more] if (!self::_parse_path($options['path'],$id,$app,$user,$user_prefix) && $app && !$user && $user !== 0) { if ($this->debug > 1) error_log(__CLASS__."::$method: user='$user', app='$app', id='$id': 404 not found!"); return '404 Not Found'; } if ($this->debug > 1) error_log(__CLASS__."::$method: user='$user', app='$app', id='$id'"); $files = array('files' => array()); $path = $user_prefix = $this->_slashify($user_prefix); if (!$app) // user root folder containing apps { // add root with current users apps $this->add_home($files, $path, $user, $options['depth']); // add principals and user-homes if ($path == '/' && $options['depth']) { // principals collection $files['files'][] = $this->add_collection('/principals/', array( 'displayname' => lang('Accounts'), )); // todo: account_selection owngroups and none!!! foreach($this->accounts->search(array('type' => 'both','order'=>'account_lid')) as $account) { $this->add_home($files, $path.$account['account_lid'].'/', $account['account_id'], $options['depth'] == 'infinity' ? 'infinity' : $options['depth']-1); } } return true; } if ($app != 'principals' && !isset($GLOBALS['egw_info']['user']['apps'][$this->root[$app]['app'] ? $this->root[$app]['app'] : $app])) { if ($this->debug) error_log(__CLASS__."::$method(path=$options[path]) 403 Forbidden: no app rights for '$app'"); return "403 Forbidden: no app rights for '$app'"; // no rights for the given app } if (($handler = self::app_handler($app))) { if ($method != 'REPORT' && !$id) // no self URL for REPORT requests (only PROPFIND) or propfinds on an id { // KAddressbook doubles the folder, if the self URL contains the GroupDAV/CalDAV resourcetypes $files['files'][0] = $this->add_app($app,$app=='addressbook'&&$handler->get_agent()=='kde',$user, $this->_slashify($options['path'])); // Hack for iOS 5.0.1 addressbook to stop asking directory gateway permissions with depth=1 if ($method == 'PROPFIND' && $options['path'] == '/addressbook/' && $handler->get_agent() == 'dataaccess') { $this->log(__CLASS__."::$method(".array2string($options).') Enabling hack for iOS 5.0.1 addressbook: force Depth: 0 on PROPFIND for directory gateway!'); return true; } if (!$options['depth']) return true; // depth 0 --> show only the self url } return $handler->propfind($this->_slashify($options['path']),$options,$files,$user,$id); } return '501 Not Implemented'; } /** * Add a collection to a PROPFIND request * * @param string $path * @param array $props=array() extra properties 'resourcetype' is added anyway, name => value pairs or name => HTTP_WebDAV_Server([namespace,]name,value) * @param array $privileges=array('read') values for current-user-privilege-set * @param array $supported_privileges=null default $this->supported_privileges * @return array with values for keys 'path' and 'props' */ public function add_collection($path, array $props = array(), array $privileges=array('read','read-acl','read-current-user-privilege-set'), array $supported_privileges=null) { // resourcetype: collection $props['resourcetype'][] = self::mkprop('collection',''); if (!isset($props['getcontenttype'])) $props['getcontenttype'] = 'httpd/unix-directory'; return $this->add_resource($path, $props, $privileges, $supported_privileges); } /** * Add a resource to a PROPFIND request * * @param string $path * @param array $props=array() extra properties 'resourcetype' is added anyway, name => value pairs or name => HTTP_WebDAV_Server([namespace,]name,value) * @param array $privileges=array('read') values for current-user-privilege-set * @param array $supported_privileges=null default $this->supported_privileges * @return array with values for keys 'path' and 'props' */ public function add_resource($path, array $props = array(), array $privileges=array('read','read-current-user-privilege-set'), array $supported_privileges=null) { // props for all collections: current-user-principal and principal-collection-set $props['current-user-principal'] = array( self::mkprop('href',$this->current_user_principal)); $props['principal-collection-set'] = array( self::mkprop('href',$this->base_uri.'/principals/')); // required props per WebDAV standard foreach(array( 'displayname' => basename($path), 'getetag' => 'none', 'getcontentlength' => '', 'getlastmodified' => '', 'getcontenttype' => '', 'resourcetype' => '', ) as $name => $default) { if (!isset($props[$name])) $props[$name] = $default; } // if requested add privileges if (is_null($supported_privileges)) $supported_privileges = $this->supported_privileges; if ($this->prop_requested('current-user-privilege-set') === true) { foreach($privileges as $name) { $props['current-user-privilege-set'][] = self::mkprop('privilege', array( is_array($name) ? self::mkprop($name['ns'], $name['name'], '') : self::mkprop($name, ''))); } } if ($this->prop_requested('supported-privilege-set') === true) { foreach($supported_privileges as $name => $data) { $props['supported-privilege-set'][] = $this->supported_privilege($name, $data, $path); } } if (!isset($props['owner']) && $this->prop_requested('owner') === true) { $props['owner'] = ''; } if ($this->debug > 1) error_log(__METHOD__."(path='$path', props=".array2string($props).')'); // convert simple associative properties to HTTP_WebDAV_Server ones foreach($props as $name => &$prop) { if (!is_array($prop) || !isset($prop['name'])) { $prop = self::mkprop($name, $prop); } // add quotes around etag, if they are not already there if ($prop['name'] == 'getetag' && $prop['val'][0] != '"') { $prop['val'] = '"'.$prop['val'].'"'; } } return array( 'path' => $path, 'props' => $props, ); } /** * Generate (hierachical) supported-privilege property * * @param string $name name of privilege * @param string|array $data string with describtion or array with agregated privileges plus value for key '*description*', '*ns*', '*only*' * @param string $path=null path to match with $data['*only*'] * @return array of self::mkprop() arrays */ protected function supported_privilege($name, $data, $path=null) { $props = array(); $props[] = self::mkprop('privilege', array(is_array($data) && $data['*ns*'] ? self::mkprop($data['*ns*'], $name, '') : self::mkprop($name, ''))); $props[] = self::mkprop('description', is_array($data) ? $data['*description*'] : $data); if (is_array($data)) { foreach($data as $name => $data) { if ($name[0] == '*') continue; if (is_array($data) && $data['*only*'] && strpos($path, $data['*only*']) === false) { continue; // wrong path } $props[] = $this->supported_privilege($name, $data, $path); } } return self::mkprop('supported-privilege', $props); } /** * Checks if a given property was requested in propfind request * * @param string $name property name * @param string $ns=null namespace, if that is to be checked too * @param boolean $return_prop=false if true return the property array with values for 'name', 'xmlns', 'attrs', 'children' * @return boolean|string|array true: $name explicitly requested (or autoindex), "all": allprop or "names": propname requested, false: $name was not requested */ function prop_requested($name, $ns=null, $return_prop=false) { if (!is_array($this->propfind_options) || !isset($this->propfind_options['props'])) { $ret = true; // no props set, should happen only in autoindex, we return true to show all available props } elseif (!is_array($this->propfind_options['props'])) { $ret = $this->propfind_options['props']; // "all": allprop or "names": propname } else { $ret = false; foreach($this->propfind_options['props'] as $prop) { if ($prop['name'] == $name && (is_null($ns) || $prop['xmlns'] == $ns)) { $ret = $return_prop ? $prop : true; break; } } } //error_log(__METHOD__."('$name', '$ns', $return_prop) propfind_options=".array2string($this->propfind_options)); return $ret; } /** * Add user home with addressbook, calendar, infolog * * @param array $files * @param string $path / or // * @param int $user * @param int $depth * @return string|boolean http status or true|false */ protected function add_home(array &$files, $path, $user, $depth) { if ($user) { $account_lid = $this->accounts->id2name($user); } else { $account_lid = $GLOBALS['egw_info']['user']['account_lid']; } $account = $this->accounts->read($account_lid); $calendar_user_address_set = array( self::mkprop('href','urn:uuid:'.$account['account_lid']), ); if ($user < 0) { $principalType = 'groups'; $displayname = lang('Group').' '.$account['account_lid']; } else { $principalType = 'users'; $displayname = $account['account_fullname']; $calendar_user_address_set[] = self::mkprop('href','mailto:'.$account['account_email']); } $calendar_user_address_set[] = self::mkprop('href',$this->base_uri.'/principals/'.$principalType.'/'.$account['account_lid'].'/'); if ($depth && $path == '/') { $displayname = 'EGroupware (Cal|Card|Group)DAV server'; } $displayname = translation::convert($displayname, translation::charset(),'utf-8'); // self url $props = array( 'displayname' => $displayname, 'owner' => $path == '/' ? '' : array(self::mkprop('href',$this->base_uri.'/principals/'.$principalType.'/'.$account_lid.'/')), ); if ($path != '/') { // add props modifyable via proppatch from client, eg. jqcalendar stores it's preferences there foreach((array)$GLOBALS['egw_info']['user']['preferences']['groupdav'] as $name => $value) { list($prop,$prop4path,$ns) = explode(':', $name, 3); if ($prop4path == $path && (!in_array($ns,self::$ns_needs_explicit_named_props) || isset(self::$proppatch_props[$prop]) && self::$proppatch_props[$prop] === $ns)) { $props[] = self::mkprop($ns, $prop, $value); //error_log(__METHOD__."() arbitrary $ns:$prop=".array2string($value)); } } } $files['files'][] = $this->add_collection($path, $props); if ($depth) { foreach($this->root as $app => $data) { if (!$GLOBALS['egw_info']['user']['apps'][$data['app'] ? $data['app'] : $app]) continue; // no rights for the given app if (!empty($data['user-only']) && ($path == '/' || $user < 0)) continue; $files['files'][] = $this->add_app($app,false,$user,$path.$app.'/'); // only add global /addressbook-accounts/ as the one in home-set is added (and controled) by add_shared if ($path == '/' && $app == 'addressbook' && !$GLOBALS['egw_info']['user']['preferences']['addressbook']['hide_accounts']) { $file = $this->add_app($app,false,0,$path.$app.'-accounts/'); $file['props']['resourcetype']['val'][] = self::mkprop(self::CALENDARSERVER,'shared',''); $files['files'][] = $file; } // added shared calendars or addressbooks $this->add_shared($files['files'], $path, $app, $user); } } return true; } /** * Add shared addressbook, calendar, infolog to user home * * @param array &$files * @param string $path // * @param int $app * @param int $user * @return string|boolean http status or true|false */ protected function add_shared(array &$files, $path, $app, $user) { // currently only show shared calendars/addressbooks for current user and not in the root if ($path == '/' || $user != $GLOBALS['egw_info']['user']['account_id'] || !isset($GLOBALS['egw_info']['user']['apps'][$app])) // also avoids principals, inbox and outbox { return true; } $handler = $this->app_handler($app); if (($shared = $handler->get_shared())) { foreach($shared as $id => $owner) { $file = $this->add_app($app,false,$id,$path.$app.'-'.$owner.'/'); // mark other users calendar as shared (iOS 5.0.1 AB does NOT display AB marked as shared!) if ($app == 'calendar') $file['props']['resourcetype']['val'][] = self::mkprop(self::CALENDARSERVER,'shared',''); $files[] = $file; } } return true; } /** * Format an account-name for use in displayname * * @param int|array $account * @return string */ public function account_name($account) { if (is_array($account)) { if ($account['account_id'] < 0) { $name = lang('Group').' '.$account['account_lid']; } else { $name = $account['account_fullname']; } } else { if ($account < 0) { $name = lang('Group').' '.$this->accounts->id2name($account,'account_lid'); } else { $name = $this->accounts->id2name($account,'account_fullname'); } if (empty($name)) $name = '#'.$account; } return $name; } /** * Add an application collection to a user home or the root * * @param string $app * @param boolean $no_extra_types=false should the GroupDAV and CalDAV types be added (KAddressbook has problems with it in self URL) * @param int $user=null owner of the collection, default current user * @param string $path='/' * @return array with values for keys 'path' and 'props' */ protected function add_app($app,$no_extra_types=false,$user=null,$path='/') { if ($this->debug) error_log(__METHOD__."(app='$app', no_extra_types=$no_extra_types, user='$user', path='$path')"); $user_preferences = $GLOBALS['egw_info']['user']['preferences']; if ($user) { $account_lid = $this->accounts->id2name($user); if ($user >= 0 && $GLOBALS['egw']->preferences->account_id != $user) { $GLOBALS['egw']->preferences->__construct($user); $user_preferences = $GLOBALS['egw']->preferences->read_repository(); $GLOBALS['egw']->preferences->__construct($GLOBALS['egw_info']['user']['account_lid']); } } else { $account_lid = $GLOBALS['egw_info']['user']['account_lid']; } $account = $this->accounts->read($account_lid); if ($user < 0) { $principalType = 'groups'; } else { $principalType = 'users'; } $props = array( 'owner' => array(self::mkprop('href',$this->base_uri.'/principals/'.$principalType.'/'.$account_lid.'/')), ); switch ($app) { case 'inbox': $props['displayname'] = lang('Scheduling inbox').' '.$this->account_name($user); break; case 'outbox': $props['displayname'] = lang('Scheduling outbox').' '.$this->account_name($user); break; case 'addressbook': if ($path == '/addressbook/') { $props['displayname'] = lang('All addressbooks'); break; } elseif(!$user && !$GLOBALS['egw_info']['user']['preferences']['addressbook']['hide_accounts']) { unset($props['owner']); $props['displayname'] = lang($app).' '.lang('Accounts'); break; } // fall through default: $props['displayname'] = translation::convert(lang($app).' '.$this->account_name($user),$this->egw_charset,'utf-8'); } // rfc 5995 (Use POST to add members to WebDAV collections): we use collection path with add-member query param /* leaving it switched off, until further testing, because OS X iCal seem to ignore it and OS X Addressbook uses POST to full URL without ?add-member if ($app && !in_array($app,array('inbox','outbox','principals'))) // not on inbox, outbox or principals { $props['add-member'][] = self::mkprop('href',$this->base_uri.$path.'?add-member'); }*/ // add props modifyable via proppatch from client, eg. calendar-color, see self::$proppatch_props foreach((array)$GLOBALS['egw_info']['user']['preferences'][$app] as $name => $value) { unset($ns); list($prop,$prop4user,$ns) = explode(':', $name, 3); if ($prop4user == (string)$user && isset(self::$proppatch_props[$prop]) && !isset($ns)) { $props[$prop] = self::mkprop(self::$proppatch_props[$prop], $prop, $value); //error_log(__METHOD__."() explicit ".self::$proppatch_props[$prop].":$prop=".array2string($value)); } // props in arbitrary namespaces not mentioned in self::$ns_needs_explicit_named_props elseif(isset($ns) && !in_array($ns,self::$ns_needs_explicit_named_props)) { $props[] = self::mkprop($ns, $prop, $value); //error_log(__METHOD__."() arbitrary $ns:$prop=".array2string($value)); } } foreach((array)$this->root[$app] as $prop => $values) { switch($prop) { case 'resourcetype'; if (!$no_extra_types) { foreach($this->root[$app]['resourcetype'] as $ns => $type) { $props['resourcetype'][] = self::mkprop($ns,$type,''); } // add /addressbook/ as directory gateway if ($path == '/addressbook/') { $props['resourcetype'][] = self::mkprop(self::CARDDAV, 'directory', ''); } } break; case 'app': case 'user-only': break; // no props, already handled default: if (is_array($values)) { foreach($values as $ns => $value) { $props[$prop] = self::mkprop($ns,$prop,$value); } } else { $props[$prop] = $values; } break; } } // add other handler specific properties if (($handler = self::app_handler($app))) { if (method_exists($handler,'extra_properties')) { $props = $handler->extra_properties($props,$this->account_name($account),$this->base_uri,$user,$path); } // add ctag if handler implements it if (method_exists($handler,'getctag') && $this->prop_requested('getctag') === true) { $props['getctag'] = self::mkprop( groupdav::CALENDARSERVER,'getctag',$handler->getctag($path,$user)); } } if ($handler && !is_null($user)) { return $this->add_collection($path, $props, $handler->current_user_privileges($path, $user)); } return $this->add_collection($path, $props); } /** * CalDAV/CardDAV REPORT method handler * * just calls PROPFIND() * * @param array general parameter passing array * @param array return array for file properties * @return bool true on success */ function REPORT(&$options, &$files) { if ($this->debug > 1) error_log(__METHOD__.'('.array2string($options).')'); return $this->PROPFIND($options,$files,'REPORT'); } /** * CalDAV/CardDAV REPORT method handler to get HTTP_WebDAV_Server to process REPORT requests * * Just calls http_PROPFIND() */ function http_REPORT() { parent::http_PROPFIND('REPORT'); } /** * GET method handler * * @param array $options parameter passing array * @return bool true on success */ function GET(&$options) { if ($this->debug) error_log(__METHOD__.'('.array2string($options).')'); if (!$this->_parse_path($options['path'],$id,$app,$user) || $app == 'principals') { return $this->autoindex($options); } if (($handler = self::app_handler($app))) { return $handler->get($options,$id,$user); } error_log(__METHOD__."(".array2string($options).") 501 Not Implemented"); return '501 Not Implemented'; } /** * Display an automatic index (listing and properties) for a collection * * @param array $options parameter passing array, index "path" contains requested path */ protected function autoindex($options) { $propfind_options = array( 'path' => $options['path'], 'depth' => 1, ); $files = array(); if (($ret = $this->PROPFIND($propfind_options,$files)) !== true) { return $ret; // no collection } header('Content-type: text/html; charset='.translation::charset()); echo "\n\n\t".'EGroupware (Cal|Card|Group)DAV server '.htmlspecialchars($options['path'])."\n"; echo "\t\n"; echo "\t\n"; echo "\n\n"; echo '

(Cal|Card|Group)DAV '; $path = '/groupdav.php'; foreach(explode('/',$this->_unslashify($options['path'])) as $n => $name) { $path .= ($n != 1 ? '/' : '').$name; echo html::a_href(htmlspecialchars($name.'/'),$path); } echo "

\n"; static $props2show = array( 'DAV:displayname' => 'Displayname', 'DAV:getlastmodified' => 'Last modified', 'DAV:getetag' => 'ETag', //'CalDAV:schedule-tag' => 'Schedule-Tag', 'DAV:getcontenttype' => 'Content type', 'DAV:resourcetype' => 'Resource type', //'DAV:owner' => 'Owner', //'DAV:current-user-privilege-set' => 'current-user-privilege-set', //'DAV:getcontentlength' => 'Size', //'DAV:sync-token' => 'sync-token', ); $n = 0; foreach($files['files'] as $file) { if (!isset($collection_props)) { $collection_props = $this->props2array($file['props']); echo '

'.lang('Collection listing').': '.htmlspecialchars($collection_props['DAV:displayname'])."

\n"; continue; // own entry --> displaying properies later } if(!$n++) { echo "\n\t\n\t\t\n\t\t"; foreach($props2show as $label) echo "\t\t\n"; echo "\t\n"; } $props = $this->props2array($file['props']); //echo $file['path']; _debug_array($props); $class = $class == 'row_on' ? 'row_off' : 'row_on'; if (substr($file['path'],-1) == '/') { $name = basename(substr($file['path'],0,-1)).'/'; } else { $name = basename($file['path']); } echo "\t\n\t\t\n\t\t\n"; foreach($props2show as $prop => $label) { echo "\t\t\n"; } echo "\t\n"; } if (!$n) { echo '

'.lang('Collection empty.')."

\n"; } else { echo "

#	".lang('Name')."	".lang($label)."
$n	". html::a_href(htmlspecialchars($name),'/groupdav.php'.strtr($file['path'], array( '%' => '%25', '#' => '%23', '?' => '%3F', )))."	".($prop=='DAV:getlastmodified'&&!empty($props[$prop])?date('Y-m-d H:i:s',$props[$prop]):$props[$prop])."

\n"; } echo '

'.lang('Properties')."

\n"; echo "\n\t\n"; foreach($collection_props as $name => $value) { $class = $class == 'row_on' ? 'row_off' : 'row_on'; $ns = explode(':',$name); $name = array_pop($ns); $ns = implode(':',$ns); echo "\t\n\t\t\n"; echo "\t\t\n\t\n"; } echo "

".lang('Namespace')."	".lang('Name')."	".lang('Value')."
".htmlspecialchars($ns)."	".htmlspecialchars($name)."	".$value."

\n"; $dav = array(1); $allow = false; $this->OPTIONS($options['path'], $dav, $allow); echo "

DAV: ".implode(', ', $dav)."

\n"; echo "\n\n"; common::egw_exit(); } /** * Format a property value for output * * @param mixed $value * @return string */ protected function prop_value($value) { if (is_array($value)) { if (isset($value[0]['ns'])) { $value = $this->_hierarchical_prop_encode($value); } $value = array2string($value); } if ($value[0] == '<' && function_exists('tidy_repair_string')) { $value = tidy_repair_string($value, array( 'indent' => true, 'show-body-only' => true, 'output-encoding' => 'utf-8', 'input-encoding' => 'utf-8', 'input-xml' => true, 'output-xml' => true, 'wrap' => 0, )); } if (preg_match('/\<(D:)?href\>[^<]+\<\/(D:)?href\>/i',$value)) { $value = '

'.preg_replace('/\<(D:)?href\>('.preg_quote($this->base_uri.'/','/').')?([^<]+)\<\/(D:)?href\>/i','<\\1href>\\3</\\4href>',$value).'

'; } else { $value = $value[0] == '<' || strpos($value, "\n") !== false ? '

'.htmlspecialchars($value).'

' : htmlspecialchars($value); } return $value; } /** * Return numeric indexed array with values for keys 'ns', 'name' and 'val' as array 'ns:name' => 'val' * * @param array $props * @return array */ protected function props2array(array $props) { $arr = array(); foreach($props as $prop) { $ns_hash = array('DAV:' => 'D'); switch($prop['ns']) { case 'DAV:'; $ns = 'DAV'; break; case self::CALDAV: $ns = $ns_hash[$prop['ns']] = 'CalDAV'; break; case self::CARDDAV: $ns = $ns_hash[$prop['ns']] = 'CardDAV'; break; case self::GROUPDAV: $ns = $ns_hash[$prop['ns']] = 'GroupDAV'; break; default: $ns = $prop['ns']; } if (is_array($prop['val'])) { $prop['val'] = $this->_hierarchical_prop_encode($prop['val'], $prop['ns'], $ns_defs='', $ns_hash); // hack to show real namespaces instead of not (visibly) defined shortcuts unset($ns_hash['DAV:']); $value = strtr($v=$this->prop_value($prop['val']),array_flip($ns_hash)); } else { $value = $this->prop_value($prop['val']); } $arr[$ns.':'.$prop['name']] = $value; } return $arr; } /** * POST method handler * * @param array parameter passing array * @return bool true on success */ function POST(&$options) { // for some reason OS X Addressbook (CFNetwork user-agent) uses now (DAV:add-member given with collection URL+"?add-member") // POST to the collection URL plus a UID like name component (like for regular PUT) to create new entrys if (isset($_GET['add-member']) || groupdav_handler::get_agent() == 'cfnetwork') { $_GET['add-member'] = ''; // otherwise we give no Location header return $this->PUT($options); } // read the content in a string, if a stream is given if (isset($options['stream'])) { $options['content'] = ''; while(!feof($options['stream'])) { $options['content'] .= fread($options['stream'],8192); } } if ($this->debug) error_log(__METHOD__.'('.array2string($options).')'); $this->_parse_path($options['path'],$id,$app,$user); if (($handler = self::app_handler($app)) && method_exists($handler, 'post')) { return $handler->post($options,$id,$user); } return '501 Not Implemented'; } /** * Namespaces which need to be eplicitly named in self::$proppatch_props, * because we consider them protected, if not explicitly named * * @var array */ static $ns_needs_explicit_named_props = array(self::DAV, self::CALDAV, self::CARDDAV, self::CALENDARSERVER); /** * props modifyable via proppatch from client for name-spaces mentioned in self::$ns_needs_explicit_named_props * * Props named here are stored in prefs without namespace! * * @var array name => namespace pairs */ static $proppatch_props = array( 'displayname' => self::DAV, 'calendar-description' => self::CALDAV, 'addressbook-description' => self::CARDDAV, 'calendar-color' => self::ICAL, // only mentioned that old prefs still work 'calendar-order' => self::ICAL, 'default-alarm-vevent-date' => self::CALDAV, 'default-alarm-vevent-datetime' => self::CALDAV, ); /** * PROPPATCH method handler * * @param array &$options general parameter passing array * @return string with responsedescription or null, individual status in $options['props'][]['status'] */ function PROPPATCH(&$options) { if ($this->debug) error_log(__CLASS__."::$method(".array2string($options).')'); // parse path in form [/account_lid]/app[/more] self::_parse_path($options['path'],$id,$app,$user,$user_prefix); // allways returns false if eg. !$id if ($app == 'principals' || $id || $options['path'] == '/') { if ($this->debug > 1) error_log(__CLASS__."::$method: user='$user', app='$app', id='$id': 404 not found!"); foreach($options['props'] as &$prop) $prop['status'] = '403 Forbidden'; return 'NOT allowed to PROPPATCH that resource!'; } // store selected props in preferences, eg. calendar-color, see self::$proppatch_props foreach($options['props'] as &$prop) { if ((isset(self::$proppatch_props[$prop['name']]) && self::$proppatch_props[$prop['name']] === $prop['xmlns'] || !in_array($prop['xmlns'],self::$ns_needs_explicit_named_props))) { if (!$app) { $app = 'groupdav'; $name = $prop['name'].':'.$options['path'].':'.$prop['ns']; } else { $name = $prop['name'].':'.$user.(isset(self::$proppatch_props[$prop['name']]) && self::$proppatch_props[$prop['name']] == $prop['ns'] ? '' : ':'.$prop['ns']); } //error_log("preferences['user']['$app']['$name']=".array2string($GLOBALS['egw_info']['user']['preferences'][$app][$name]).($GLOBALS['egw_info']['user']['preferences'][$app][$name] !== $prop['val'] ? ' !== ':' === ')."prop['val']=".array2string($prop['val'])); if ($GLOBALS['egw_info']['user']['preferences'][$app][$name] !== $prop['val']) // nothing to change otherwise { if (isset($prop['val'])) { $GLOBALS['egw']->preferences->add($app, $name, $prop['val']); } else { $GLOBALS['egw']->preferences->delete($app, $name); } $need_save = true; } $prop['status'] = '200 OK'; } else { $prop['status'] = '409 Conflict'; // could also be "403 Forbidden" } } if ($need_save) $GLOBALS['egw']->preferences->save_repository(); } /** * PUT method handler * * @param array parameter passing array * @return bool true on success */ function PUT(&$options) { // read the content in a string, if a stream is given if (isset($options['stream'])) { $options['content'] = ''; while(!feof($options['stream'])) { $options['content'] .= fread($options['stream'],8192); } } if ($this->debug) error_log(__METHOD__.'('.array2string($options).')'); if (!$this->_parse_path($options['path'],$id,$app,$user,$prefix)) { return '404 Not Found'; } if (($handler = self::app_handler($app))) { $status = $handler->put($options,$id,$user,$prefix); // set default stati: true --> 204 No Content, false --> should be already handled if (is_bool($status)) $status = $status ? '204 No Content' : '400 Something went wrong'; return $status; } return '501 Not Implemented'; } /** * DELETE method handler * * @param array general parameter passing array * @return bool true on success */ function DELETE($options) { if ($this->debug) error_log(__METHOD__.'('.array2string($options).')'); if (!$this->_parse_path($options['path'],$id,$app,$user)) { return '404 Not Found'; } if (($handler = self::app_handler($app))) { $status = $handler->delete($options,$id); // set default stati: true --> 204 No Content, false --> should be already handled if (is_bool($status)) $status = $status ? '204 No Content' : '400 Something went wrong'; return $status; } return '501 Not Implemented'; } /** * MKCOL method handler * * @param array general parameter passing array * @return bool true on success */ function MKCOL($options) { if ($this->debug) error_log(__METHOD__.'('.array2string($options).')'); return '501 Not Implemented'; } /** * MOVE method handler * * @param array general parameter passing array * @return bool true on success */ function MOVE($options) { if ($this->debug) error_log(__METHOD__.'('.array2string($options).')'); return '501 Not Implemented'; } /** * COPY method handler * * @param array general parameter passing array * @return bool true on success */ function COPY($options, $del=false) { if ($this->debug) error_log('groupdav::'.($del ? 'MOVE' : 'COPY').'('.array2string($options).')'); return '501 Not Implemented'; } /** * LOCK method handler * * @param array general parameter passing array * @return bool true on success */ function LOCK(&$options) { self::_parse_path($options['path'],$id,$app,$user); $path = egw_vfs::app_entry_lock_path($app,$id); if ($this->debug) error_log(__METHOD__.'('.array2string($options).") path=$path"); // get the app handler, to check if the user has edit access to the entry (required to make locks) $handler = self::app_handler($app); // TODO recursive locks on directories not supported yet if (!$id || !empty($options['depth']) || !$handler->check_access(EGW_ACL_EDIT,$id)) { return '409 Conflict'; } $options['timeout'] = time()+300; // 5min. hardcoded // dont know why, but HTTP_WebDAV_Server passes the owner in D:href tags, which get's passed unchanged to checkLock/PROPFIND // that's wrong according to the standard and cadaver does not show it on discover --> strip_tags removes eventual tags if (($ret = egw_vfs::lock($path,$options['locktoken'],$options['timeout'],strip_tags($options['owner']), $options['scope'],$options['type'],isset($options['update']),false)) && !isset($options['update'])) // false = no ACL check { return $ret ? '200 OK' : '409 Conflict'; } return $ret; } /** * UNLOCK method handler * * @param array general parameter passing array * @return bool true on success */ function UNLOCK(&$options) { self::_parse_path($options['path'],$id,$app,$user); $path = egw_vfs::app_entry_lock_path($app,$id); if ($this->debug) error_log(__METHOD__.'('.array2string($options).") path=$path"); return egw_vfs::unlock($path,$options['token']) ? '204 No Content' : '409 Conflict'; } /** * checkLock() helper * * @param string resource path to check for locks * @return bool true on success */ function checkLock($path) { self::_parse_path($path,$id,$app,$user); $path = egw_vfs::app_entry_lock_path($app,$id); return egw_vfs::checkLock($path); } /** * ACL method handler * * @param array general parameter passing array * @return string HTTP status */ function ACL(&$options) { self::_parse_path($options['path'],$id,$app,$user); if ($this->debug) error_log(__METHOD__.'('.array2string($options).") path=$path"); $options['errors'] = array(); switch ($app) { case 'calendar': case 'addressbook': case 'infolog': $status = '200 OK'; // grant all break; default: $options['errors'][] = 'no-inherited-ace-conflict'; $status = '403 Forbidden'; } return $status; } /** * Parse a path into it's id, app and user parts * * @param string $path * @param int &$id * @param string &$app addressbook, calendar, infolog (=infolog) * @param int &$user * @param string &$user_prefix=null * @return boolean true on success, false on error */ function _parse_path($path,&$id,&$app,&$user,&$user_prefix=null) { if ($this->debug) { error_log(__METHOD__." called with ('$path') id=$id, app='$app', user=$user"); } if ($path[0] == '/') { $path = substr($path, 1); } $parts = explode('/', $this->_unslashify($path)); if (($account_id = $this->accounts->name2id($parts[0], 'account_lid')) || ($account_id = $this->accounts->name2id($parts[0]=urldecode($parts[0])))) { // /$user/$app/... $user = array_shift($parts); } $app = array_shift($parts); // /addressbook-accounts/ if (!$account_id && $app == 'addressbook-accounts') { $app = 'addressbook'; $user = 0; $user_prefix = '/'; } // shared calendars/addressbooks at //(calendar|addressbook|infolog)- elseif ($account_id == $GLOBALS['egw_info']['user']['account_id'] && strpos($app, '-') !== false) { list($app, $username) = explode('-', $app, 2); if ($username == 'accounts' && !$GLOBALS['egw_info']['user']['preferences']['addressbook']['hide_accounts']) { $account_id = 0; } elseif (!($account_id = $this->accounts->name2id($username, 'account_lid')) && !($account_id = $this->accounts->name2id($username=urldecode($username)))) { return false; } $user = $account_id; $user_prefix = '/'.$GLOBALS['egw_info']['user']['account_lid'].'/'.$app.'-'.$username; } elseif ($user) { $user_prefix = '/'.$user; $user = $account_id; // //inbox/ if ($user == $GLOBALS['egw_info']['user']['account_id'] && $app == 'inbox') { $app = 'calendar'; } } else { $user_prefix = ''; $user = $GLOBALS['egw_info']['user']['account_id']; } $id = array_pop($parts); $ok = ($id || isset($_GET['add-member']) && $_SERVER['REQUEST_METHOD'] == 'POST') && ($user || $user === 0) && in_array($app,array('addressbook','calendar','infolog','principals')); if ($this->debug) { error_log(__METHOD__."('$path') returning " . ($ok ? 'true' : 'false') . ": id='$id', app='$app', user='$user', user_prefix='$user_prefix'"); } return $ok; } private static $request_starttime; /** * Serve WebDAV HTTP request * * Reimplemented to add logging */ function ServeRequest() { if (($debug_level=$GLOBALS['egw_info']['user']['preferences']['groupdav']['debug_level']) === 'r' || $debug_level === 'f' || $this->debug) { self::$request_starttime = microtime(true); $this->store_request = true; ob_start(); } parent::ServeRequest(); if (self::$request_starttime) self::log_request(); } /** * Log the request * * @param string $extra='' extra text to add below request-log, eg. exception thrown */ private function log_request($extra='') { if (self::$request_starttime) { if (($debug_level=$GLOBALS['egw_info']['user']['preferences']['groupdav']['debug_level']) === 'f') { $msg_file = $GLOBALS['egw_info']['server']['files_dir']; $msg_file .= '/groupdav'; if (!file_exists($msg_file) && !mkdir($msg_file,0700)) { error_log(__METHOD__."() Could NOT create directory '$msg_file'!"); return; } $msg_file .= '/'.$GLOBALS['egw_info']['user']['account_lid'].'-'. str_replace('/','!',$_SERVER['HTTP_USER_AGENT']).'.log'; $content = '*** '.$_SERVER['REMOTE_ADDR'].' '.date('c')."\n"; } $content .= $_SERVER['REQUEST_METHOD'].' '.$_SERVER['REQUEST_URI'].' HTTP/1.1'."\n"; // reconstruct headers foreach($_SERVER as $name => $value) { list($type,$name) = explode('_',$name,2); if ($type == 'HTTP' || $type == 'CONTENT') { $content .= str_replace(' ','-',ucwords(strtolower(($type=='HTTP'?'':$type.' ').str_replace('_',' ',$name)))). ': '.($name=='AUTHORIZATION'?'Basic ***************':$value)."\n"; } } $content .= "\n"; if ($this->request) { $content .= $this->request."\n"; } $content .= 'HTTP/1.1 '.$this->_http_status."\n"; foreach(headers_list() as $line) $content .= $line."\n"; if (($c = ob_get_flush())) $content .= "\n"; if ($debug_level !== 'f' && strlen($c) > 1536) $c = substr($c,0,1536)."\n*** LOG TRUNKATED\n"; $content .= $c; if ($extra) $content .= $extra; if ($this->to_log) $content .= "\n### ".implode("\n### ", $this->to_log)."\n"; $content .= $this->_http_status[0] == '4' && substr($this->_http_status,0,3) != '412' || $this->_http_status[0] == '5' ? '###' : '***'; // mark failed requests with ###, instead of *** $content .= sprintf(' %s --> "%s" took %5.3f s',$_SERVER['REQUEST_METHOD'].($_SERVER['REQUEST_METHOD']=='REPORT'?' '.$this->propfind_options['root']['name']:'').' '.$_SERVER['PATH_INFO'],$this->_http_status,microtime(true)-self::$request_starttime)."\n\n"; if ($msg_file && ($f = fopen($msg_file,'a'))) { flock($f,LOCK_EX); fwrite($f,$content); flock($f,LOCK_UN); fclose($f); } else { foreach(explode("\n",$content) as $line) error_log($line); } } } /** * Content of log() calls, to be appended to request_log * * @var array */ private $to_log = array(); /** * Log unconditional to own request- and PHP error-log * * @param string $str */ public function log($str) { $this->to_log[] = $str; error_log($str); } /** * Exception handler, which additionally logs the request (incl. a trace) * * Does NOT return and get installed in constructor. * * @param Exception $e */ public static function exception_handler(Exception $e) { // logging exception as regular egw_execption_hander does _egw_log_exception($e,$headline); // exception handler sending message back to the client as basic auth message $error = str_replace(array("\r", "\n"), array('', ' | '), $e->getMessage()); header('WWW-Authenticate: Basic realm="'.$headline.': '.$error.'"'); header('HTTP/1.1 401 Unauthorized'); header('X-WebDAV-Status: 401 Unauthorized', true); // if our own logging is active, log the request plus a trace, if enabled in server-config if (self::$request_starttime && isset($GLOBALS['groupdav']) && is_a($GLOBALS['groupdav'],__CLASS__)) { $GLOBALS['groupdav']->_http_status = '401 Unauthorized'; // to correctly log it if ($GLOBALS['egw_info']['server']['exception_show_trace']) { $GLOBALS['groupdav']->log_request("\n".$e->getTraceAsString()."\n"); } else { $GLOBALS['groupdav']->log_request(); } } if (is_object($GLOBALS['egw'])) { common::egw_exit(); } exit; } }