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Add support for POST freebusy request per draft caldav scheduling RFC.

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This commit is contained in:
Andrew McMillan 2008-10-24 18:03:27 +13:00
parent f7c7620dea
commit 49013d36ac
2 changed files with 137 additions and 4 deletions
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1
htdocs/caldav.php
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@ -41,6 +41,7 @@ switch ( $request->method ) {
case 'MKCALENDAR': include_once("caldav-MKCALENDAR.php"); break;
case 'MKCOL': include_once("caldav-MKCALENDAR.php"); break;
case 'PUT': include_once("caldav-PUT.php"); break;
case 'POST': include_once("caldav-POST.php"); break;
case 'GET': include_once("caldav-GET.php"); break;
case 'HEAD': include_once("caldav-GET.php"); break;
case 'DELETE': include_once("caldav-DELETE.php"); break;

140
inc/caldav-POST.php
View File

@ -10,12 +10,15 @@
*/
dbg_error_log("POST", "method handler");
require_once("XMLDocument.php");
require_once("iCalendar.php");
include_once("RRule.php");
if ( ! $request->AllowedTo("CALDAV:schedule-send-freebusy")
&& ! $request->AllowedTo("CALDAV:schedule-send-invite")
&& ! $request->AllowedTo("CALDAV:schedule-send-reply") ) {
$request->DoResponse(403);
// $request->DoResponse(403);
dbg_error_log( "WARN", ": POST: permissions not yet checked" );
}
if ( ! ini_get('open_basedir') && (isset($c->dbg['ALL']) || $c->dbg['post']) ) {
@ -27,11 +30,140 @@ if ( ! ini_get('open_basedir') && (isset($c->dbg['ALL']) || $c->dbg['post']) ) {
}
function handle_freebusy_request( $ic ) {
global $c, $session, $request;
$reply = new XMLDocument( array("DAV:" => "", "urn:ietf:params:xml:ns:caldav" => "C" ) );
$responses = array();
$fbq_start = $ic->Get('DTSTART');
$fbq_end = $ic->Get('DTEND');
$component =& $ic->component->FirstNonTimezone();
$attendees = $component->GetProperties('ATTENDEE');
$fb_response_template = new iCalendar( array( 'DTSTAMP' => date('Ymd\THis\Z'),
'DTSTART' => $fbq_start,
'DTEND' => $fbq_end,
'UID' => $ic->Get('UID'),
'ORGANIZER' => $ic->Get('ORGANIZER'),
'type' => 'VFREEBUSY' ) );
$fb_response_template->component->AddProperty( new iCalProp("METHOD:REPLY") );
foreach( $attendees AS $k => $attendee ) {
$attendee_email = preg_replace( '/^mailto:/', '', $attendee->Value() );
if ( ! ( isset($fbq_start) || isset($fbq_end) ) ) {
$request->DoResponse( 400, 'All valid freebusy requests MUST contain a DTSTART and a DTEND' );
}
$where = " WHERE usr.email = ? AND collection.is_calendar ";
if ( isset( $fbq_start ) ) {
$where .= "AND (dtend >= ".qpg($fbq_start)."::timestamp with time zone ";
$where .= "OR calculate_later_timestamp(".qpg($fbq_start)."::timestamp with time zone,dtend,rrule) >= ".qpg($fbq_start)."::timestamp with time zone) ";
}
if ( isset( $fbq_end ) ) {
$where .= "AND dtstart <= ".qpg($fbq_end)."::timestamp with time zone ";
}
$where .= "AND caldav_data.caldav_type IN ( 'VEVENT', 'VFREEBUSY' ) ";
$where .= "AND (calendar_item.transp != 'TRANSPARENT' OR calendar_item.transp IS NULL) ";
$where .= "AND (calendar_item.status != 'CANCELLED' OR calendar_item.status IS NULL) ";
/**
* @TODO Some significant permissions need to be added around the visibility of free/busy
* but lets get it working first...
*/
$where .= "AND (calendar_item.class != 'PRIVATE' OR calendar_item.class IS NULL) ";
$busy = array();
$busy_tentative = array();
$sql = "SELECT caldav_data.caldav_data, calendar_item.rrule, calendar_item.transp, calendar_item.status, ";
$sql .= "to_char(calendar_item.dtstart at time zone 'GMT',".iCalendar::SqlDateFormat().") AS start, ";
$sql .= "to_char(calendar_item.dtend at time zone 'GMT',".iCalendar::SqlDateFormat().") AS finish ";
$sql .= "FROM usr INNER JOIN collection USING (user_no) INNER JOIN caldav_data USING (collection_id) INNER JOIN calendar_item USING(dav_id)".$where;
if ( isset($c->strict_result_ordering) && $c->strict_result_ordering ) $sql .= " ORDER BY dav_id";
$qry = new PgQuery( $sql, $attendee_email );
if ( $qry->Exec("POST",__LINE__,__FILE__) && $qry->rows > 0 ) {
while( $calendar_object = $qry->Fetch() ) {
if ( $calendar_object->transp != "TRANSPARENT" ) {
switch ( $calendar_object->status ) {
case "TENTATIVE":
dbg_error_log( "POST", " FreeBusy: tentative appointment: %s, %s", $calendar_object->start, $calendar_object->finish );
$busy_tentative[] = $calendar_object;
break;
case "CANCELLED":
// Cancelled events are ignored
break;
default:
dbg_error_log( "POST", " FreeBusy: Not transparent, tentative or cancelled: %s, %s", $calendar_object->start, $calendar_object->finish );
$busy[] = $calendar_object;
break;
}
}
}
}
$i = 0;
$fbparams = array( "FBTYPE" => "BUSY-TENTATIVE" );
$fb = clone($fb_response_template);
$fb->Add( $attendee->Name(), $attendee->Value(), $attendee->parameters );
foreach( $busy_tentative AS $k => $v ) {
$start = new iCalDate($v->start);
$duration = $start->DateDifference($v->finish);
if ( $v->rrule != "" ) {
$rrule = new RRule( $start, $v->rrule );
while ( $date = $rrule->GetNext() ) {
if ( ! $date->GreaterThan($fbq_start) ) continue;
if ( $date->GreaterThan($fbq_end) ) break;
$todate = clone($date);
$todate->AddDuration($duration);
$fb->Add("FREEBUSY", sprintf("%s/%s", $date->Render('Ymd\THis'), $todate->Render('Ymd\THis') ), $fbparams );
}
}
else {
$fb->Add("FREEBUSY;FBTYPE=BUSY-TENTATIVE",sprintf("%s/%s", $start->Render('Ymd\THis'), $v->finish ), $fbparams );
}
}
foreach( $busy AS $k => $v ) {
$start = new iCalDate($v->start);
$duration = $start->DateDifference($v->finish);
if ( $v->rrule != "" ) {
$rrule = new RRule( $start, $v->rrule );
while ( $date = $rrule->GetNext() ) {
if ( ! $date->GreaterThan($fbq_start) ) continue;
if ( $date->GreaterThan($fbq_end) ) break;
$todate = clone($date);
$todate->AddDuration($duration);
$fb->Add("FREEBUSY", sprintf("%s/%s", $date->Render('Ymd\THis'), $todate->Render('Ymd\THis') ) );
}
}
else {
$fb->Add("FREEBUSY", sprintf("%s/%s", $start->Render('Ymd\THis'), $v->finish ) );
}
}
$response = new XMLElement( $reply->Caldav("response") );
$response->NewElement( $reply->Caldav("recipient"), new XMLElement("href",$_SERVER['HTTP_RECIPIENT']) );
$response->NewElement( $reply->Caldav("request-status"), "2.0;Success" ); // Cargo-cult setting
$response->NewElement( $reply->Caldav("calendar-data"), $fb->Render() );
$responses[] = $response;
}
$response = new XMLElement( "schedule-response", $responses, $reply->GetXmlNsArray() );
$request->DoResponse( 200, $response->Render() );
}
$ical = new iCalendar( array('icalendar' => $request->raw_post) );
switch ( $ical->properties['METHOD'] ) {
$calendar_properties = $ical->component->GetProperties('METHOD');
$method = $calendar_properties[0]->Value();
switch ( $method ) {
case 'REQUEST':
dbg_error_log("POST", ": Handling iTIP 'REQUEST' method.", $method );
handle_freebusy_request( $ical );
break;
default:
dbg_error_log("POST", ": Unhandled '%s' method in request.", $ical->properties['METHOD'] );
}
dbg_error_log("POST", ": Unhandled '%s' method in request.", $method );
}