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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) 2007-11 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.
*
* @todo create extra addressbook eg. "/accounts/" which shows accounts, even if they are in LDAP (no carddav_name column!)
*/
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',
'ORG' => 'org_name',
);
var $supportedFields = array(
'ADR;WORK' => array('','adr_one_street2','adr_one_street','adr_one_locality','adr_one_region',
'adr_one_postalcode','adr_one_countryname'),
'ADR;HOME' => array('','adr_two_street2','adr_two_street','adr_two_locality','adr_two_region',
'adr_two_postalcode','adr_two_countryname'),
'BDAY' => array('bday'),
//'CLASS' => array('private'),
//'CATEGORIES' => array('cat_id'),
'EMAIL;WORK' => array('email'),
'EMAIL;HOME' => array('email_home'),
'N' => array('n_family','n_given','n_middle',
'n_prefix','n_suffix'),
'FN' => array('n_fn'),
'NOTE' => array('note'),
'ORG' => array('org_name','org_unit','room'),
'TEL;CELL;WORK' => array('tel_cell'),
'TEL;CELL;HOME' => array('tel_cell_private'),
'TEL;CAR' => array('tel_car'),
'TEL;OTHER' => array('tel_other'),
'TEL;VOICE;WORK' => array('tel_work'),
'TEL;FAX;WORK' => array('tel_fax'),
'TEL;HOME;VOICE' => array('tel_home'),
'TEL;FAX;HOME' => array('tel_fax_home'),
'TEL;PAGER' => array('tel_pager'),
'TITLE' => array('title'),
'URL;WORK' => array('url'),
'URL;HOME' => array('url_home'),
'ROLE' => array('role'),
'NICKNAME' => array('label'),
'FBURL' => array('freebusy_uri'),
'PHOTO' => array('jpegphoto'),
'X-ASSISTANT' => array('assistent'),
'X-ASSISTANT-TEL' => array('tel_assistent'),
'UID' => array('uid'),
);
/**
* Charset for exporting data, as some clients ignore the headers specifying the charset
*
* @var string
*/
var $charset = 'utf-8';
/**
* Constructor
*
* @param string $app 'calendar', 'addressbook' or 'infolog'
* @param groupdav $groupdav calling class
*/
function __construct($app, groupdav $groupdav)
{
parent::__construct($app, $groupdav);
$this->bo = new addressbook_bo();
// since 1.9.007 we allow clients to specify the URL when creating a new contact, as specified by CardDAV
if ($this->bo->account_repository != 'ldap' &&
version_compare($GLOBALS['egw_info']['apps']['phpgwapi']['version'], '1.9.007', '>='))
{
groupdav_handler::$path_attr = 'carddav_name';
groupdav_handler::$path_extension = '';
}
else
{
groupdav_handler::$path_extension = '.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, $nresults))
{
return false;
}
if ($id) $path = dirname($path).'/'; // carddav_name get's added anyway in the callback
if ($this->debug) error_log(__METHOD__."($path,".array2string($options).",,$user,$id) filter=".array2string($filter));
// check if we have to return the full contact 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')
{
$filter['address_data'] = true;
break;
}
}
}
if (isset($nresults))
{
$files['files'] = $this->propfind_callback($path, $filter, array(0, (int)$nresults));
}
else
{
// return iterator, calling ourself to return result in chunks
$files['files'] = new groupdav_propfind_iterator($this,$path,$filter,$files['files']);
}
return true;
}
/**
* Callback for profind interator
*
* @param string $path
* @param array $filter
* @param array|boolean $start=false false=return all or array(start,num)
* @return array with "files" array with values for keys path and props
*/
function &propfind_callback($path,array $filter,$start=false)
{
$starttime = microtime(true);
if (($address_data = $filter['address_data']))
{
$handler = self::_get_handler();
}
unset($filter['address_data']);
if (isset($filter['order']))
{
$order = $filter['order'];
unset($filter['order']);
}
else
{
$order = 'egw_addressbook.contact_id';
}
$files = array();
// we query etag and modified, as LDAP does not have the strong sql etag
$cols = array('id','uid','etag','modified');
if (!in_array(self::$path_attr,$cols)) $cols[] = self::$path_attr;
if (($contacts =& $this->bo->search(array(),$cols,$order,'','',False,'AND',$start,$filter)))
{
foreach($contacts as &$contact)
{
$props = array(
'getcontenttype' => HTTP_WebDAV_Server::mkprop('getcontenttype', 'text/vcard'),
);
if ($address_data)
{
$content = $handler->getVCard($contact['id'],$this->charset,false);
$props['getcontentlength'] = bytes($content);
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'address-data',$content,true);
}
$files[] = $this->add_resource($path, $contact, $props);
}
}
if ($this->debug) error_log(__METHOD__."($path,".array2string($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 $id
* @param int &$nresult on return limit for number or results or unchanged/null
* @return boolean true if filter could be processed
*/
function _report_filters($options,&$filters,$id, &$nresults)
{
if ($options['filters'])
{
/* Example of a complex filter used by Mac Addressbook
<B:filter test="anyof">
<B:prop-filter name="FN" test="allof">
<B:text-match collation="i;unicode-casemap" match-type="contains">becker</B:text-match>
<B:text-match collation="i;unicode-casemap" match-type="contains">ralf</B:text-match>
</B:prop-filter>
<B:prop-filter name="EMAIL" test="allof">
<B:text-match collation="i;unicode-casemap" match-type="contains">becker</B:text-match>
<B:text-match collation="i;unicode-casemap" match-type="contains">ralf</B:text-match>
</B:prop-filter>
<B:prop-filter name="NICKNAME" test="allof">
<B:text-match collation="i;unicode-casemap" match-type="contains">becker</B:text-match>
<B:text-match collation="i;unicode-casemap" match-type="contains">ralf</B:text-match>
</B:prop-filter>
</B:filter>
*/
$filter_test = isset($options['filters']['attrs']) && isset($options['filters']['attrs']['test']) ?
$options['filters']['attrs']['test'] : 'anyof';
$prop_filters = array();
foreach($options['filters'] as $n => $filter)
{
if (!is_int($n)) continue; // eg. attributes of filter xml element
switch((string)$filter['name'])
{
case 'param-filter':
error_log(__METHOD__."(...) param-filter='{$filter['attrs']['name']}' not (yet) implemented!");
break;
case 'prop-filter': // can be multiple prop-filter, see example
if ($matches) $prop_filters[] = implode($prop_test=='allof'?' AND ':' OR ',$matches);
$matches = array();
$prop_filter = strtoupper($filter['attrs']['name']);
$prop_test = isset($filter['attrs']['test']) ? $filter['attrs']['test'] : 'anyof';
if ($this->debug > 1) error_log(__METHOD__."(...) prop-filter='$prop_filter', test='$prop_test'");
break;
case 'is-not-defined':
$matches[] = '('.$column."='' OR ".$column.' IS NULL)';
break;
case 'text-match': // prop-filter can have multiple text-match, see example
if (!isset($this->filter_prop2cal[$prop_filter])) // eg. not existing NICKNAME in EGroupware
{
if ($this->debug || $prop_filter != 'NICKNAME') error_log(__METHOD__."(...) text-match: $prop_filter {$filter['attrs']['match-type']} '{$filter['data']}' unknown property '$prop_filter' --> ignored");
$column = false; // to ignore following data too
}
else
{
switch($filter['attrs']['collation']) // todo: which other collations allowed, we are allways unicode
{
case 'i;unicode-casemap':
default:
$comp = ' '.$GLOBALS['egw']->db->capabilities[egw_db::CAPABILITY_CASE_INSENSITIV_LIKE].' ';
break;
}
$column = $this->filter_prop2cal[strtoupper($prop_filter)];
if (strpos($column, '_') === false) $column = 'contact_'.$column;
if (!isset($filters['order'])) $filters['order'] = $column;
$match_type = $filter['attrs']['match-type'];
$negate_condition = isset($filter['attrs']['negate-condition']) && $filter['attrs']['negate-condition'] == 'yes';
}
break;
case '': // data of text-match element
if (isset($filter['data']) && isset($column))
{
if ($column) // false for properties not known to EGroupware
{
$value = str_replace(array('%', '_'), array('\\%', '\\_'), $filter['data']);
switch($match_type)
{
case 'equals':
$sql_filter = $column . $comp . $GLOBALS['egw']->db->quote($value);
break;
default:
case 'contains':
$sql_filter = $column . $comp . $GLOBALS['egw']->db->quote('%'.$value.'%');
break;
case 'starts-with':
$sql_filter = $column . $comp . $GLOBALS['egw']->db->quote($value.'%');
break;
case 'ends-with':
$sql_filter = $column . $comp . $GLOBALS['egw']->db->quote('%'.$value);
break;
}
$matches[] = ($negate_condition ? 'NOT ' : '').$sql_filter;
if ($this->debug > 1) error_log(__METHOD__."(...) text-match: $prop_filter $match_type' '{$filter['data']}'");
}
unset($column);
break;
}
// fall through
default:
error_log(__METHOD__."(".array2string($options).",,$id) unknown filter=".array2string($filter).' --> ignored');
break;
}
}
if ($matches) $prop_filters[] = implode($prop_test=='allof'?' AND ':' OR ',$matches);
if ($prop_filters)
{
$filters[] = $filter = '(('.implode($filter_test=='allof'?') AND (':') OR (', $prop_filters).'))';
if ($this->debug) error_log(__METHOD__."($path,...) sql-filter: $filter");
}
}
// parse limit from $options['other']
/* Example limit
<B:limit>
<B:nresults>10</B:nresults>
</B:limit>
*/
foreach($options['other'] as $option)
{
switch($option['name'])
{
case 'nresults':
$nresults = (int)$option['data'];
//error_log(__METHOD__."(...) options[other]=".array2string($options['other'])." --> nresults=$nresults");
break;
case 'limit':
break;
default:
error_log(__METHOD__."(...) unknown xml: options[other]=".array2string($options['other']));
break;
}
}
// multiget --> fetch the url's
if ($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)))
{
$ids[] = groupdav_handler::$path_extension ? basename($id,groupdav_handler::$path_extension) : $id;
}
}
}
if ($ids) $filters[self::$path_attr] = $ids;
if ($this->debug) error_log(__METHOD__."(...) addressbook-multiget: ids=".implode(',',$ids));
}
elseif ($id)
{
$filters[self::$path_attr] = groupdav_handler::$path_extension ? basename($id,groupdav_handler::$path_extension) : $id;
}
return true;
}
/**
* Handle get request for an event
*
* @param array &$options
* @param int $id
* @param int $user=null account_id
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
*/
function get(&$options,$id,$user=null)
{
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);
// e.g. Evolution does not understand 'text/vcard'
$options['mimetype'] = 'text/x-vcard; charset='.$this->charset;
header('Content-Encoding: identity');
header('ETag: "'.$this->get_etag($contact).'"');
return true;
}
/**
* Handle put request for a contact
*
* @param array &$options
* @param int $id
* @param int $user=null account_id of owner, default null
* @param string $prefix=null user prefix from path (eg. /ralf from /ralf/addressbook)
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
*/
function put(&$options,$id,$user=null,$prefix=null)
{
if ($this->debug) error_log(__METHOD__.'('.array2string($options).",$id,$user)");
$oldContact = $this->_common_get_put_delete('PUT',$options,$id);
if (!is_null($oldContact) && !is_array($oldContact))
{
return $oldContact;
}
$handler = self::_get_handler();
$vCard = htmlspecialchars_decode($options['content']);
// Fix for Apple Addressbook
$vCard = preg_replace('/item\d\.(ADR|TEL|EMAIL|URL)/', '\1', $vCard);
$charset = null;
if (!empty($options['content_type']))
{
$content_type = explode(';', $options['content_type']);
if (count($content_type) > 1)
{
array_shift($content_type);
foreach ($content_type as $attribute)
{
trim($attribute);
list($key, $value) = explode('=', $attribute);
switch (strtolower($key))
{
case 'charset':
$charset = strtoupper(substr($value,1,-1));
}
}
}
}
$contact = $handler->vcardtoegw($vCard, $charset);
if (is_array($oldContact) || ($oldContact = $this->bo->read(array('contact_uid' => $contact['uid']))))
{
$contactId = $oldContact['id'];
$retval = true;
}
else
{
// new entry
$contactId = -1;
$retval = '201 Created';
}
if (is_array($contact['cat_id']))
{
$contact['cat_id'] = implode(',',$this->bo->find_or_add_categories($contact['cat_id'], $contactId));
}
elseif ($contactId > 0)
{
$contact['cat_id'] = $oldContact['cat_id'];
}
if (is_array($oldContact))
{
$contact['id'] = $oldContact['id'];
// dont allow the client to overwrite certain values
$contact['uid'] = $oldContact['uid'];
$contact['owner'] = $oldContact['owner'];
$contact['private'] = $oldContact['private'];
$contact['carddav_name'] = $oldContact['carddav_name'];
}
else
{
$contact['carddav_name'] = $id;
}
// only set owner, if user is explicitly specified in URL (check via prefix, NOT for /addressbook/ !)
if ($prefix)
{
// check for modified owners, if user has an add right for the new addressbook and
// delete rights for the old addressbook (_common_get_put_delete checks for PUT only EGW_ACL_EDIT)
if ($oldContact && $user != $oldContact['owner'] && !($this->bo->grants[$user] & EGW_ACL_ADD) &&
(!$this->bo->grants[$oldContact['owner']] & EGW_ACL_DELETE))
{
return '403 Forbidden';
}
$contact['owner'] = $user;
}
if ($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 ($save_ok === 0)
{
return '412 Precondition Failed';
}
return '403 Forbidden'; // happens when writing new entries in AB's without ADD rights
}
if (!isset($contact['etag']))
{
$contact = $this->read($save_ok);
}
// we should not return an etag here, as we never store the PUT vcard byte-by-byte
//header('ETag: "'.$this->get_etag($contact).'"');
// send GroupDAV Location header only if we dont use carddav_name as path-attribute
if ($retval !== true && self::$path_attr == 'id')
{
$path = preg_replace('|(.*)/[^/]*|', '\1/', $options['path']);
header($h='Location: '.$this->base_uri.$path.self::get_path($contact));
if ($this->debug) error_log(__METHOD__."($method,,$id) header('$h'): $retval");
}
return $retval;
}
/**
* Query ctag for addressbook
*
* @return string
*/
public function getctag($path,$user)
{
// not showing addressbook of a single user?
if (!$user || $path == '/addressbook/') $user = null;
return $this->bo->get_ctag($user);
}
/**
* Add the privileges of the current user
*
* @param array $props=array() regular props by the groupdav handler
* @return array
*/
static function current_user_privilege_set(array $props=array())
{
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::DAV,'current-user-privilege-set',
array(HTTP_WebDAV_Server::mkprop(groupdav::DAV,'privilege',
array(
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'read',''),
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'read-free-busy',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'read-current-user-privilege-set',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'bind',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'unbind',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'schedule-post',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'schedule-post-vevent',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'schedule-respond',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'schedule-respond-vevent',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'schedule-deliver',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'schedule-deliver-vevent',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'write',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'write-properties',''),
HTTP_WebDAV_Server::mkprop(groupdav::DAV,'write-content',''),
))));
return $props;
}
/**
* 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
* @param string $displayname
* @param string $base_uri=null base url of handler
* @param int $user=null account_id of owner of collection
* @return array
*/
public function extra_properties(array $props=array(), $displayname, $base_uri=null, $user=null)
{
// addressbook description
$displayname = translation::convert(lang('Addressbook of'),translation::charset(),'utf-8').' '.$displayname;
$props['addressbook-description'] = HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'addressbook-description',$displayname);
// supported reports (required property for CardDAV)
$props['supported-report-set'] = HTTP_WebDAV_Server::mkprop('supported-report-set',array(
HTTP_WebDAV_Server::mkprop('supported-report',array(
HTTP_WebDAV_Server::mkprop('report',array(
HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'addressbook-query',''))))),
HTTP_WebDAV_Server::mkprop('supported-report',array(
HTTP_WebDAV_Server::mkprop('report',array(
HTTP_WebDAV_Server::mkprop(groupdav::CARDDAV,'addressbook-multiget',''))))),
));
return $props;
}
/**
* Get the handler and set the supported fields
*
* @return addressbook_vcal
*/
private function _get_handler()
{
if ($this->agent != 'cfnetwork' && $this->agent != 'dataaccess')
{
// Apple Addressbook don't support CLASS
$this->supportedFields['CLASS'] = array('private');
$this->supportedFields['CATEGORIES'] = array('cat_id');
}
$handler = new addressbook_vcal('addressbook','text/vcard');
$handler->setSupportedFields('GroupDAV',$this->agent, $this->supportedFields);
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 true;
}
/**
* Read a contact
*
* We have to make sure to not return or even consider in read deleted contacts, as the might have
* the same UID and/or carddav_name as not deleted contacts and would block access to valid entries
*
* @param string|id $id
* @return array/boolean array with entry, false if no read rights, null if $id does not exist
*/
function read($id)
{
static $non_deleted_tids;
if (is_null($non_deleted_tids))
{
$non_deleted_tids = $this->bo->content_types;
unset($non_deleted_tids[addressbook_so::DELETED_TYPE]);
$non_deleted_tids = array_keys($non_deleted_tids);
}
$contact = $this->bo->read(array(self::$path_attr => $id, 'tid' => $non_deleted_tids));
if ($contact && $contact['tid'] == addressbook_so::DELETED_TYPE)
{
$contact = null; // handle deleted events, as not existing (404 Not Found)
}
return $contact;
}
/**
* 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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