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egroupware_official/addressbook/inc/class.addressbook_groupdav.inc.php

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<?php
/**
* EGroupware: GroupDAV access: addressbook handler
*
* @link http://www.egroupware.org
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package addressbook
* @subpackage groupdav
* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @copyright (c) 2007-9 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
* @version $Id$
*/
/**
* EGroupware: GroupDAV access: addressbook handler
*
* Propfind now uses a groupdav_propfind_iterator with a callback to query huge addressbooks in chunk,
* without getting into problems with memory_limit.
*/
class addressbook_groupdav extends groupdav_handler
{
/**
* bo class of the application
*
* @var addressbook_bo
*/
var $bo;
var $filter_prop2cal = array(
'UID' => 'uid',
//'NICKNAME',
'EMAIL' => 'email',
'FN' => 'n_fn',
);
/**
* Charset for exporting data, as some clients ignore the headers specifying the charset
*
* @var string
*/
var $charset = 'utf-8';
/**
* What attribute is used to construct the path, default id, can be uid too
*/
const PATH_ATTRIBUTE = 'id';
/**
* Constructor
*
* @param string $app 'calendar', 'addressbook' or 'infolog'
* @param int $debug=null debug-level to set
* @param string $base_uri=null base url of handler
*/
function __construct($app,$debug=null,$base_uri=null)
{
parent::__construct($app,$debug,$base_uri);
$this->bo = new addressbook_bo();
}
/**
* Create the path for a contact
*
* @param array $contact
* @return string
*/
static function get_path($contact)
{
return '/addressbook/'.$contact[self::PATH_ATTRIBUTE].'.vcf';
}
/**
* Handle propfind in the addressbook folder
*
* @param string $path
* @param array $options
* @param array &$files
* @param int $user account_id
* @param string $id=''
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
*/
function propfind($path,$options,&$files,$user,$id='')
{
$filter = array();
// show addressbook of a single user?
if ($user && $path != '/addressbook/') $filter['contact_owner'] = $user;
// should we hide the accounts addressbook
if ($GLOBALS['egw_info']['user']['preferences']['addressbook']['hide_accounts']) $filter['account_id'] = null;
// process REPORT filters or multiget href's
if (($id || $options['root']['name'] != 'propfind') && !$this->_report_filters($options,$filter,$id))
{
return false;
}
if ($this->debug) error_log(__METHOD__."($path,".array2string($options).",,$user,$id) filter=".array2string($filter));
// check if we have to return the full calendar data or just the etag's
if (!($filter['address_data'] = $options['props'] == 'all' && $options['root']['ns'] == groupdav::CARDDAV) && is_array($options['props']))
{
foreach($options['props'] as $prop)
{
if ($prop['name'] == 'address-data')
{
$filter['address_data'] = true;
break;
}
}
}
// return iterator, calling ourself to return result in chunks
$files['files'] = new groupdav_propfind_iterator($this,$filter,$files['files']);
return true;
}
/**
* Callback for profind interator
*
* @param array $filter
* @param array|boolean $start=false false=return all or array(start,num)
* @return array with "files" array with values for keys path and props
*/
function &propfind_callback(array $filter,$start=false)
{
$starttime = microtime(true);
if (($address_data = $filter['address_data']))
{
$handler = self::_get_handler();
}
unset($filter['address_data']);
$files = array();
// we query etag and modified, as LDAP does not have the strong sql etag
if (($contacts =& $this->bo->search(array(),$address_data ? false : array('id','uid','etag','modified'),'contact_id','','',False,'AND',$start,$filter)))
{
foreach($contacts as &$contact)
{
$props = array(
HTTP_WebDAV_Server::mkprop('getetag',$this->get_etag($contact)),
HTTP_WebDAV_Server::mkprop('getcontenttype', 'text/x-vcard'),
// getlastmodified and getcontentlength are required by WebDAV and Cadaver eg. reports 404 Not found if not set
HTTP_WebDAV_Server::mkprop('getlastmodified', $contact['modified']),
);
if ($address_data)
{
$content = $handler->getVCard($contact,$this->charset,false);
$props[] = HTTP_WebDAV_Server::mkprop('getcontentlength',bytes($content));
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'address-data',$content);
}
else
{
$props[] = HTTP_WebDAV_Server::mkprop('getcontentlength', ''); // expensive to calculate and no CalDAV client uses it
}
$files[] = array(
'path' => self::get_path($contact),
'props' => $props,
);
}
}
if ($this->debug) error_log(__METHOD__.'('.array2string($filter).','.array2string($start).") took ".(microtime(true) - $starttime).' to return '.count($files).' items');
return $files;
}
/**
* Process the filters from the CalDAV REPORT request
*
* @param array $options
* @param array &$cal_filters
* @param string $id
* @return boolean true if filter could be processed, false for requesting not here supported VTODO items
*/
function _report_filters($options,&$filters,$id)
{
if ($options['filters'])
{
foreach($options['filters'] as $filter)
{
switch($filter['name'])
{
case 'prop-filter':
if ($this->debug > 1) error_log(__METHOD__."($path,...) prop-filter='{$filter['attrs']['name']}'");
$prop_filter = $filter['attrs']['name'];
break;
case 'text-match':
if ($this->debug > 1) error_log(__METHOD__."($path,...) text-match: $prop_filter='{$filter['data']}'");
if (!isset($this->filter_prop2cal[strtoupper($prop_filter)]))
{
if ($this->debug) error_log(__METHOD__."($path,".str_replace(array("\n",' '),'',print_r($options,true)).",,$user) unknown property '$prop_filter' --> ignored");
}
else
{
switch($filter['attrs']['match-type'])
{
default:
case 'equals':
$filters[$this->filter_prop2cal[strtoupper($prop_filter)]] = $filter['data'];
break;
case 'substr': // ToDo: check RFC4790
$filters[] = $this->filter_prop2cal[strtoupper($prop_filter)].' LIKE '.$GLOBALS['egw']->db->quote($filter['data']);
break;
}
}
unset($prop_filter);
break;
case 'param-filter':
if ($this->debug) error_log(__METHOD__."($path,...) param-filter='{$filter['attrs']['name']}' not (yet) implemented!");
break;
default:
if ($this->debug) error_log(__METHOD__."($path,".array2string($options).",,$user) unknown filter --> ignored");
break;
}
}
}
// multiget --> fetch the url's
if ($options['root']['name'] == 'addressbook-multiget')
{
$ids = array();
foreach($options['other'] as $option)
{
if ($option['name'] == 'href')
{
$parts = explode('/',$option['data']);
if (($id = array_pop($parts))) $ids[] = basename($id,'.vcf');
}
}
if ($ids) $filters[self::PATH_ATTRIBUTE] = $ids;
if ($this->debug) error_log(__METHOD__."($path,,,$user) addressbook-multiget: ids=".implode(',',$ids));
}
elseif ($id)
{
$filters[self::PATH_ATTRIBUTE] = basename($id,'.vcf');
}
return true;
}
/**
* Handle get request for an event
*
* @param array &$options
* @param int $id
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
*/
function get(&$options,$id)
{
if (!is_array($contact = $this->_common_get_put_delete('GET',$options,$id)))
{
return $contact;
}
$handler = self::_get_handler();
$options['data'] = $handler->getVCard($contact['id'],$this->charset,false);
$options['mimetype'] = 'text/x-vcard; charset='.$this->charset;
header('Content-Encoding: identity');
header('ETag: '.$this->get_etag($contact));
return true;
}
/**
* Handle put request for an event
*
* @param array &$options
* @param int $id
* @param int $user=null account_id of owner, default null
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
*/
function put(&$options,$id,$user=null)
{
$ok = $this->_common_get_put_delete('PUT',$options,$id);
if (!is_null($ok) && !is_array($ok))
{
return $ok;
}
$handler = self::_get_handler();
$contact = $handler->vcardtoegw($options['content']);
if (!is_null($ok))
{
$contact['id'] = $ok['id'];
// dont allow the client to overwrite certain values
$contact['uid'] = $ok['uid'];
$contact['owner'] = $ok['owner'];
$contact['private'] = $ok['private'];
}
if ($this->http_if_match) $contact['etag'] = self::etag2value($this->http_if_match);
if (!($save_ok = $this->bo->save($contact)))
{
if ($this->debug) error_log(__METHOD__."(,$id) save(".array2string($contact).") failed, Ok=$save_ok");
if ($save_ok === 0)
{
return '412 Precondition Failed';
}
return false;
}
if (!isset($contact['etag']))
{
$contact = $this->read($contact['id']);
}
header('ETag: '.$this->get_etag($contact));
if (is_null($ok))
{
header($h='Location: '.$this->base_uri.self::get_path($contact));
if ($this->debug) error_log(__METHOD__."($method,,$id) header('$h'): 201 Created");
return '201 Created';
}
return true;
}
/**
* Query ctag for addressbook
*
* @return string
*/
public function getctag($path,$user)
{
$filter = array();
// show addressbook of a single user?
if ($user && $path != '/addressbook/') $filter['contact_owner'] = $user;
// should we hide the accounts addressbook
if ($GLOBALS['egw_info']['user']['preferences']['addressbook']['hide_accounts']) $filter['account_id'] = null;
$result = $this->bo->search(array(),'MAX(contact_modified) AS contact_modified','','','','','',$filter);
return '"'.$result[0]['modified'].'"';
}
/**
* Add extra properties for addressbook collections
*
* Example for supported-report-set syntax from Apples Calendarserver:
* <D:supported-report-set>
* <supported-report>
* <report>
* <addressbook-query xmlns='urn:ietf:params:xml:ns:carddav'/>
* </report>
* </supported-report>
* <supported-report>
* <report>
* <addressbook-multiget xmlns='urn:ietf:params:xml:ns:carddav'/>
* </report>
* </supported-report>
* </D:supported-report-set>
* @link http://www.mail-archive.com/calendarserver-users@lists.macosforge.org/msg01156.html
*
* @param array $props=array() regular props by the groupdav handler
* @return array
*/
static function extra_properties(array $props=array())
{
// supported reports (required property for CardDAV)
$props[] = HTTP_WebDAV_Server::mkprop('supported-report-set',array(
HTTP_WebDAV_Server::mkprop('supported-report',array(
HTTP_WebDAV_Server::mkprop('report',
HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'addressbook-query','')))),
HTTP_WebDAV_Server::mkprop('supported-report',array(
HTTP_WebDAV_Server::mkprop('report',
HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'addressbook-multiget','')))),
));
return $props;
}
/**
* Get the handler and set the supported fields
*
* @return addressbook_vcal
*/
private function _get_handler()
{
$handler = new addressbook_vcal('addressbook','text/vcard');
$handler->setSupportedFields('GroupDAV',$this->agent);
return $handler;
}
/**
* Handle delete request for an event
*
* @param array &$options
* @param int $id
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
*/
function delete(&$options,$id)
{
if (!is_array($contact = $this->_common_get_put_delete('DELETE',$options,$id)))
{
return $contact;
}
if (($Ok = $this->bo->delete($contact['id'],self::etag2value($this->http_if_match))) === 0)
{
return '412 Precondition Failed';
}
return $ok;
}
/**
* Read a contact
*
* @param string/id $id
* @return array/boolean array with entry, false if no read rights, null if $id does not exist
*/
function read($id)
{
return $this->bo->read(self::PATH_ATTRIBUTE == 'id' ? $id : array(self::PATH_ATTRIBUTE => $id));
}
/**
* Check if user has the neccessary rights on a contact
*
* @param int $acl EGW_ACL_READ, EGW_ACL_EDIT or EGW_ACL_DELETE
* @param array/int $contact contact-array or id
* @return boolean null if entry does not exist, false if no access, true if access permitted
*/
function check_access($acl,$contact)
{
return $this->bo->check_perms($acl,$contact);
}
}
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