egroupware/icalsrv.php
2006-02-20 11:36:30 +00:00

313 lines
9.9 KiB
PHP

<?php
/* WARNING: EXPERIMENTAL CODE DO NOT USE FOR PRODUCTION */
/**
* @file
* Icalsrv: Export and Import Egw events and task as ICalendar over http
*
* @desc purp egw remote ical-over-http server interface that can import and export vevents,
* and vtodos. Possible clients include Mozilla Calendar/Sunbird, Korganizer, Apple Ical
* and Evolution.
* @note <b> THIS IS STILL EXPERIMENTAL CODE </b> do not use in production.
* @note this script is supposed to be at: egw-root/icalsrv.php
*
* @version 0.9.02
* @date 20060214
* @author Jan van Lieshout <jvl (at) xs4all.nl> Rewrite and extension for egw 1.2.
* (see: http://www.egroupware.org )
*
* Based on some code from:
* @author RalfBecker@outdoor-training.de (some original code base)
* @author bbeckmann (at) optaros.com (some modificationas)
* @author l.tulipan (at) mpwi.at (Additional Modifications for egw 1.2).
*
* @license
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* @since 0.9.00 use of the new egwical class for iCalendar handling with WURH
* according to WURH pattern
*/
// TODO list:
// - incorporate this icalsrv.php script in standard egroupware access url
// - make this 'ical-service' enabled/disabled from the egw admin interface
// - make some parameters of this 'ical-service' interface user specific configurable
// for example the vevent and vtodo export period (define search filters..)
// overwrite or duplicate mode etc.
// Build a html interface for this. I guess this goes into $GLOBALS....['preferences']...
// CAN SOMEBODY HELP WITH THIS? (not my piece of pudding ....)
#$logdir = false; // set to false for no logging
$logdir = '/tmp'; // set to a valid (writable) directory to get log file generation
# WHY THIS? IS IT NEEDED?
$GLOBALS['phpgw_info'] =
array('flags' => array('currentapp' => 'calendar',
'noheader' => True,
'nofooter' => True,
),);
$GLOBALS['phpgw_info']['flags']['currentapp'] = 'login';
$GLOBALS['phpgw_info']['flags']['noapi'] = True;
include ('./header.inc.php');
include ('./phpgwapi/inc/functions.inc.php');
$GLOBALS['egw_info']['flags']['currentapp'] = 'calendar';
// oke there we go .....
// exit on non authenticated http request
if ((!isset($_SERVER['PHP_AUTH_USER'])) ||
(!$GLOBALS['egw']->auth->authenticate($_SERVER['PHP_AUTH_USER'],
$_SERVER['PHP_AUTH_PW']))) {
header('WWW-Authenticate: Basic realm="ICal Server"');
header('HTTP/1.1 401 Unauthorized');
exit;
}
$user = $GLOBALS['egw']->accounts->name2id($_SERVER['PHP_AUTH_USER']);
$pw = $GLOBALS['egw']->preferences->account_id = $user;
# WHY THIS? IS IT NEEDED?
$GLOBALS['egw_info']['user']['preferences'] =
$GLOBALS['egw']->preferences->read_repository();
$GLOBALS['egw_info']['user']['account_id'] = $user;
$GLOBALS['egw_info']['user']['account_lid'] = $_SERVER['PHP_AUTH_USER'];
/* WARNING:
* SET $euid_export ONLY TO TRUE IF YOU NEED IT TO USE THE EXPORTED ICAL INFO
* SEPARATED FROM EGW, IN A CONTEXT WHERE IT ORIGINATED FROM. SO NORMALLY LEAVE IT
* TO FALSE IF WANT TO USE YOUR CLIENT REGULARY (TO SUBSCRIBE/PUBLISH TO) WITH EGW
*/
$euid_export = false;
/* select mode for importing the ical components,
* safeMode=-1 -> allows new creation and deletion (in combi with $importMode = 'OVERWRITE')
* 0 -> allow new creation and change, but no deletion?
* WARNING:
* USE safeMode = -1 WILL DELETE EXISTING events WHEN NO VALID ATTENDEES ARE
* GIVEN IN THE RELATED ICAL IMPORTED VEVENT !!
* ---!!! USE WITH CARE OR YOUR DATA GETS LOST!! ---------
*/
$safeMode = 0;
$importMode = 'OVERWRITE'; // OVERWRITE or DUPLICATE
$logmsg = "";
// IO-0 setup an Egwical object, and add a Calendar and a Infolog Resource
// these will do all the work
$ei =& CreateObject('egwical.egwical');
// for free an Horde_iCalendar object that we may use to collect or convert ical elements
$hIcal = $ei->hi;
$boc =& CreateObject('calendar.bocalupdate');
$binf =& CreateObject('infolog.boinfolog');
//calendar_vevents_handler: this will allow $ei to convert events<->vevents and
// store and retrieve them from the egw db
$cvehnd = $ei->addRsc($boc);
//infolog_vtodos_handler: this will allow $ei to convert tasks<->vtodos and
// store and retrieve them from the egw db
$ivthnd = $ei->addRsc($binf);
// oke now process the http request...
if ($_SERVER['REQUEST_METHOD'] == 'PUT') {
// *** PUT Request so do an Import *************
// I0 read the payload
$logmsg = 'IMPORTING in '. $importMode . ' mode';
$fpput = fopen("php://input", "r");
$putData = "";
while ($data = fread($fpput, 1024))
$putData .= $data;
fclose($fpput);
// I1: parse $putData using the egwical builtin ical parser
$hIcal =& $ei->parsevCalendar($putData);
if(!$hIcal){
$msg ="icalsrv.php: error parsing iCal import data";
fail_exit($msg);
}
$logmsg .= "\n parsed iCalendar data:" . count($hIcal->_components) . " components found";
// I2: now import possibly found VEVENTS into eGW calendar
$vcnt = $cvehnd->importVEventsFromIcal($hIcal, $importMode, $safeMode);
if($vcnt === false){
$msg = 'icalsrv.php: VEVENTS import: ERRORS';
fail_exit($msg);
} else{
$logmsg .= "\n imported " . $vcnt ." VEVENTS: OK";
}
// I3: now import possibly found VTODOS into eGW calendar
$tcnt = $ivthnd->importVTodosFromIcal($hIcal, $importMode);
if ($tcnt === false){
$msg = 'icalsrv.php: VTODOS import: ERRORS';
fail_exit($msg);
}
$logmsg .= "\n imported " . $tcnt . " VTODOS: OK ";
if($logdir) log_ical($logmsg,"import",$putData);
} else {
// *** GET (or POST?) Request
$logmsg = 'EXPORTING';
// Get events from 3 years (last year, current, next), rather silly.. */
$last_year = date("Y")-1;
$next_year = date("Y")+1;
// E1.1: get period to be exported for events
// For productivity this should be user configurable e.g. to be set via some sort of user
// preferences to be set via eGW. (config remote-iCalendar...)
$events_query = array('start' => $last_year . "-01-01",
'end' => $next_year . "-12-31",
'enum_recuring' => false,
'daywise' => false,
'owner' => $GLOBALS['egw_info']['user']['account_id'],
// timestamp in server time for boical class
'date_format' => 'server'
);
$todos_query = array('col_filter' => array('type' => 'task'),
'filter' => 'none',
'order' => 'id_parent'
);
// E2.1: search eGW events based on the $events_query
$events = & $boc->search($events_query);
if (!$events){
$logmsg .="\n no eGW events found to export";
// nevertheless fall through to further ical components export
} else {
$logmsg .= "\n found " . count($events) . " eGW events to export";
//E2.2 convert the found eGW events and add them to the iCal container
$vcnt = $cvehnd->exportEventsOntoIcal($hIcal, $events, $euid_export);
if($vcnt === false){
$msg = 'icalsrv.php: eGW to VEVENTS conversion: ERRORS';
fail_exit($msg);
} else {
$logmsg .= "\n exported the eGW events as " . $vcnt . " VEvents: OK ";
}
$bove = null; //destroy object
}
// E3.1: search eGW todos based on the $todos_query
$todos =& $binf->search($todos_query);
if (!$todos){
$logmsg .="\n no eGW todos found to export";
// nevertheless fall through to further ical components export
} else {
$logmsg .= "\n found " . count($todos) . " eGW todos to export";
//E3.2 convert the found eGW todos and add them to the iCal container
$tcnt = $ivthnd->exportTodosOntoIcal($hIcal, $todos, $euid_export);
if ($tcnt === false){
$msg = 'icalsrv.php: eGW to VTODOS conversion: ERRORS';
fail_exit($msg);
} else {
$logmsg .= "\n exported the eGW todos as " . $tcnt . " VTODOS: OK ";
}
$bovt = null; //destroy object
}
// E4.1: add good vcal header info to iCal object
$hIcal->setAttribute('PRODID', '-//eGroupWare//NONSGML eGroupWare Calendar '
. $GLOBALS['egw_info']['apps']['calendar']['version'].'//'
. strtoupper($GLOBALS['egw_info']['user']['preferences']['common']['lang']));
$hIcal->setAttribute('VERSION','2.0');
$hIcal->setAttribute('METHOD','PUBLISH');
// now let Horde stringify it and deliver as result
$content = $hIcal->exportvCalendar();
echo $content;
// DONE exporting
if($logdir) log_ical($logmsg,"export",$content);
}
$GLOBALS['egw']->common->egw_exit();
// --- SOME UTILITY FUNCTIONS -------
/**
* Exit with an error message in html
* @param $msg string
* message that gets return as html error description
*/
function fail_exit($msg){
// log the error in the http server error logging files
error_log($msg);
// return http error 403 can this be done this way?
header('HTTP/1.1 403' . $msg);
$GLOBALS['egw']->common->egw_exit();
}
/* dummy fail_exit */
function fail_exit($msg){
// log the error in the http server error logging files
error_log($msg);
return;
}
/*
* Log info and data to logfiles if logging is set
*
* @param $msg string with loginfo
* @param $data data to be logged
* @param $icalmethod $string value can be import or export
* @global $logdir string/boolean log directory. Set to false to disab logging
*/
function log_ical($msg,$icalmethod="data",$data){
global $logdir;
if (!$logdir)
return; // loggin seems off
// some info used for logging
$logstamp = date("U");
$loguser = $_SERVER['PHP_AUTH_USER'];
$logdate = date("Ymd:His");
// filename for log info, only used when logging is on
$fnloginfo = "$logdir/ical.log";
// log info
$fnlogdata = $logdir . "/ical." . $icalmethod . '.' . $logstamp . ".ics";
$fp = fopen("$fnloginfo",'a+');
fwrite($fp,"\n\n$loguser on $logdate : $msg, \n data in $fnlogdata ");
fclose($fp);
// log data
$fp = fopen("$fnlogdata", "w");
fputs($fp, $data);
fclose($fp);
}
?>