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Scheduling extentions working with iCal 4

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Rob Ostensen 2010-03-09 16:13:16 -06:00 committed by Andrew McMillan
parent 519edce1dd
commit 3efbddd9bd
2 changed files with 153 additions and 7 deletions
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8
inc/caldav-POST.php
View File

@ -13,6 +13,7 @@ dbg_error_log("POST", "method handler");
require_once("XMLDocument.php"); require_once("XMLDocument.php");
require_once("iCalendar.php"); require_once("iCalendar.php");
include_once("RRule.php"); include_once("RRule.php");
include_once('caldav-PUT-functions.php');
if ( ! $request->AllowedTo("CALDAV:schedule-send-freebusy") if ( ! $request->AllowedTo("CALDAV:schedule-send-freebusy")
&& ! $request->AllowedTo("CALDAV:schedule-send-invite") && ! $request->AllowedTo("CALDAV:schedule-send-invite")
@ -216,10 +217,17 @@ switch ( $method ) {
dbg_error_log('POST', 'Handling iTIP "REQUEST" method with "%s" component.', $method, $first->GetType() ); dbg_error_log('POST', 'Handling iTIP "REQUEST" method with "%s" component.', $method, $first->GetType() );
if ( $first->GetType() == 'VFREEBUSY' ) if ( $first->GetType() == 'VFREEBUSY' )
handle_freebusy_request( $first ); handle_freebusy_request( $first );
elseif ( $first->GetType() == 'VEVENT' ) {
handle_schedule_request( $ical );
}
else { else {
dbg_error_log('POST', 'Ignoring iTIP "REQUEST" with "%s" component.', $first->GetType() ); dbg_error_log('POST', 'Ignoring iTIP "REQUEST" with "%s" component.', $first->GetType() );
} }
break; break;
case 'REPLY':
dbg_error_log('POST', 'Handling iTIP "REPLY" with "%s" component.', $first->GetType() );
handle_schedule_reply ( $ical );
break;
case 'CANCEL': case 'CANCEL':
dbg_error_log("POST", "Handling iTIP 'CANCEL' method.", $method ); dbg_error_log("POST", "Handling iTIP 'CANCEL' method.", $method );

152
inc/caldav-PUT-functions.php
View File

@ -16,6 +16,7 @@
*/ */
require_once('iCalendar.php'); require_once('iCalendar.php');
require_once('DAVResource.php');
/** /**
* A regex which will match most reasonable timezones acceptable to PostgreSQL. * A regex which will match most reasonable timezones acceptable to PostgreSQL.
@ -137,6 +138,142 @@ function public_events_only( $user_no, $dav_name ) {
return false; return false;
} }
/**
* Deliver scheduling requests to attendees
* @param iCalComponent $ical the VCALENDAR to deliver
*/
function handle_schedule_request( $ical ) {
global $c, $session, $request;
$resources = $ical->GetComponents('VTIMEZONE',false);
$ic = $resources[0];
$etag = md5 ( $request->raw_post );
$reply = new XMLDocument( array("DAV:" => "", "urn:ietf:params:xml:ns:caldav" => "C" ) );
$responses = array();
$attendees = $ic->GetProperties('ATTENDEE');
$wr_attendees = $ic->GetProperties('X-WR-ATTENDEE');
if ( count ( $wr_attendees ) > 0 ) {
dbg_error_log( "POST", "Non-compliant iCal request. Using X-WR-ATTENDEE property" );
foreach( $wr_attendees AS $k => $v ) {
$attendees[] = $v;
}
}
dbg_error_log( "POST", "Attempting to deliver scheduling request for %d attendees", count($attendees) );
foreach( $attendees AS $k => $attendee ) {
$attendee_email = preg_replace( '/^mailto:/', '', $attendee->Value() );
if ( $attendee_email == $request->principal->email ) {
dbg_error_log( "POST", "not delivering to owner" );
continue;
}
if ( $attendee->GetParameterValue ( 'PARTSTAT' ) != 'NEEDS-ACTION' || preg_match ( '/^[35]\.[3-9]/', $attendee->GetParameterValue ( 'SCHEDULE-STATUS' ) ) ) {
dbg_error_log( "POST", "attendee %s does not need action", $attendee_email );
continue;
}
dbg_error_log( "POST", "Delivering to %s", $attendee_email );
$attendee_principal = new CalDAVPrincipal ( array ('email'=>$attendee_email, 'options'=> array ( 'allow_by_email' => true ) ) );
if ( $attendee_principal == false ){
$attendee->SetParameterValue ('SCHEDULE-STATUS','3.7;Invalid Calendar User');
continue;
}
$deliver_path = preg_replace ( '/^.*caldav.php/','', $attendee_principal->schedule_inbox_url );
$ar = new DAVResource($deliver_path);
$priv = $ar->HavePrivilegeTo('schedule-deliver-invite' );
if ( ! $ar->HavePrivilegeTo('schedule-deliver-invite' ) ){
$reply = new XMLDocument( array('DAV:' => '') );
$privnodes = array( $reply->href(ConstructURL($attendee_principal->schedule_inbox_url)), new XMLElement( 'privilege' ) );
// RFC3744 specifies that we can only respond with one needed privilege, so we pick the first.
$reply->NSElement( $privnodes[1], 'schedule-deliver-invite' );
$xml = new XMLElement( 'need-privileges', new XMLElement( 'resource', $privnodes) );
$xmldoc = $reply->Render('error',$xml);
$request->DoResponse( 403, $xmldoc, 'text/xml; charset="utf-8"');
}
$attendee->SetParameterValue ('SCHEDULE-STATUS','1.2;Scheduling message has been delivered');
$ncal = new iCalComponent ( );
$ncal->VCalendar ();
$ncal->AddProperty ( 'METHOD', 'REQUEST' );
$ncal->AddComponent ( array_merge ( $ical->GetComponents('VEVENT',false) , array ($ic) ));
$content = $ncal->Render();
$cid = $ar->GetProperty('collection_id');
dbg_error_log('DELIVER', 'to user: %s, to path: %s, collection: %s, from user: %s, caldata %s', $attendee_principal->user_no, $deliver_path, $cid, $request->user_no, $content );
write_resource( $attendee_principal->user_no, $deliver_path . $etag . '.ics' ,
$content , $ar->GetProperty('collection_id'), $request->user_no,
md5($content), $ncal, $put_action_type='INSERT', $caldav_context=true, $log_action=true, $etag );
$attendee->SetParameterValue ('SCHEDULE-STATUS','1.2;Scheduling message has been delivered');
}
// don't write an entry in the out box, ical doesn't delete it or ever read it again
//write_resource( $request->user_no, $request->path . $etag . '.ics' ,
// $content , $request->collection_id, $request->user_no,
// md5($content), $ncal, $put_action_type='INSERT', $caldav_context=true, $log_action=true, $etag );
header('ETag: "'. md5(content) . '"' );
header('Schedule-Tag: "'.$etag . '"' );
$request->DoResponse( 201, 'Created' );
}
/**
* Deliver scheduling replies to organizer and other attendees
* @param iCalComponent $ical the VCALENDAR to deliver
* @return false on error
*/
function handle_schedule_reply ( $ical ) {
global $c, $session, $request;
$resources = $ical->GetComponents('VTIMEZONE',false);
$ic = $resources[0];
$etag = md5 ( $request->raw_post );
$organizer = $ic->GetProperties('ORGANIZER');
// for now we treat events with out organizers as an error
if ( count ( $organizer ) < 1 )
return false;
$attendees = array_merge($organizer,$ic->GetProperties('ATTENDEE'));
$wr_attendees = $ic->GetProperties('X-WR-ATTENDEE');
if ( count ( $wr_attendees ) > 0 ) {
dbg_error_log( "POST", "Non-compliant iCal request. Using X-WR-ATTENDEE property" );
foreach( $wr_attendees AS $k => $v ) {
$attendees[] = $v;
}
}
dbg_error_log( "POST", "Attempting to deliver scheduling request for %d attendees", count($attendees) );
foreach( $attendees AS $k => $attendee ) {
$attendee_email = preg_replace( '/^mailto:/', '', $attendee->Value() );
dbg_error_log( "POST", "Delivering to %s", $attendee_email );
$attendee_principal = new CalDAVPrincipal ( array ('email'=>$attendee_email, 'options'=> array ( 'allow_by_email' => true ) ) );
$deliver_path = preg_replace ( '/^.*caldav.php/','', $attendee_principal->schedule_inbox_url );
$attendee_email = preg_replace( '/^mailto:/', '', $attendee->Value() );
if ( $attendee_email == $request->principal->email ) {
dbg_error_log( "POST", "not delivering to owner" );
continue;
}
$ar = new DAVResource($deliver_path);
if ( ! $ar->HavePrivilegeTo('schedule-deliver-reply' ) ){
$reply = new XMLDocument( array('DAV:' => '') );
$privnodes = array( $reply->href(ConstructURL($attendee_principal->schedule_inbox_url)), new XMLElement( 'privilege' ) );
// RFC3744 specifies that we can only respond with one needed privilege, so we pick the first.
$reply->NSElement( $privnodes[1], 'schedule-deliver-reply' );
$xml = new XMLElement( 'need-privileges', new XMLElement( 'resource', $privnodes) );
$xmldoc = $reply->Render('error',$xml);
$request->DoResponse( 403, $xmldoc, 'text/xml; charset="utf-8"' );
}
$ncal = new iCalComponent ( );
$ncal->VCalendar ();
$ncal->AddProperty ( 'METHOD', 'REPLY' );
$ncal->AddComponent ( array_merge ( $ical->GetComponents('VEVENT',false) , array ($ic) ));
$content = $ncal->Render();
write_resource( $attendee_principal->user_no, $deliver_path . $etag . '.ics' ,
$content , $ar->GetProperty('collection_id'), $request->user_no,
md5($content), $ncal, $put_action_type='INSERT', $caldav_context=true, $log_action=true, $etag );
}
$request->DoResponse( 201, 'Created' );
}
/** /**
* Create a scheduling request in the schedule inbox for the * Create a scheduling request in the schedule inbox for the
@ -160,9 +297,9 @@ function create_scheduling_requests( &$resource ) {
} }
$attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/ATTENDEE'); $attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/ATTENDEE');
if ( preg_match( '# iCal/\d#', $_SERVER['HTTP_USER_AGENT']) ) { $wr_attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/X-WR-ATTENDEE');
if ( count ( $wr_attendees ) > 0 ) {
dbg_error_log( 'POST', 'Non-compliant iCal request. Using X-WR-ATTENDEE property' ); dbg_error_log( 'POST', 'Non-compliant iCal request. Using X-WR-ATTENDEE property' );
$wr_attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/X-WR-ATTENDEE');
foreach( $wr_attendees AS $k => $v ) { foreach( $wr_attendees AS $k => $v ) {
$attendees[] = $v; $attendees[] = $v;
} }
@ -190,9 +327,9 @@ function update_scheduling_requests( &$resource ) {
} }
$attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/ATTENDEE'); $attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/ATTENDEE');
if ( preg_match( '# iCal/\d#', $_SERVER['HTTP_USER_AGENT']) ) { $wr_attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/X-WR-ATTENDEE');
if ( count ( $wr_attendees ) > 0 ) {
dbg_error_log( 'POST', 'Non-compliant iCal request. Using X-WR-ATTENDEE property' ); dbg_error_log( 'POST', 'Non-compliant iCal request. Using X-WR-ATTENDEE property' );
$wr_attendees = $resource->GetPropertiesByPath('/VCALENDAR/*/X-WR-ATTENDEE');
foreach( $wr_attendees AS $k => $v ) { foreach( $wr_attendees AS $k => $v ) {
$attendees[] = $v; $attendees[] = $v;
} }
@ -499,9 +636,10 @@ function putCalendarResource( &$request, $author, $caldav_context ) {
* @param boolean $caldav_context True, if we are responding via CalDAV, false for other ways of calling this * @param boolean $caldav_context True, if we are responding via CalDAV, false for other ways of calling this
* @param string Either 'INSERT' or 'UPDATE': the type of action we are doing * @param string Either 'INSERT' or 'UPDATE': the type of action we are doing
* @param boolean $log_action Whether to log the fact that we are writing this into an action log (if configured) * @param boolean $log_action Whether to log the fact that we are writing this into an action log (if configured)
* @param string $weak_etag An etag that is NOT modified on ATTENDEE changes for this event
* @return boolean True for success, false for failure. * @return boolean True for success, false for failure.
*/ */
function write_resource( $user_no, $path, $caldav_data, $collection_id, $author, $etag, $ic, $put_action_type, $caldav_context, $log_action=true ) { function write_resource( $user_no, $path, $caldav_data, $collection_id, $author, $etag, $ic, $put_action_type, $caldav_context, $log_action=true, $weak_etag=null ) {
global $tz_regex; global $tz_regex;
$resources = $ic->GetComponents('VTIMEZONE',false); // Not matching VTIMEZONE $resources = $ic->GetComponents('VTIMEZONE',false); // Not matching VTIMEZONE
@ -518,8 +656,8 @@ function write_resource( $user_no, $path, $caldav_data, $collection_id, $author,
if ( $put_action_type == 'INSERT' ) { if ( $put_action_type == 'INSERT' ) {
create_scheduling_requests($vcal); create_scheduling_requests($vcal);
$qry = new PgQuery( 'BEGIN; INSERT INTO caldav_data ( user_no, dav_name, dav_etag, caldav_data, caldav_type, logged_user, created, modified, collection_id ) VALUES( ?, ?, ?, ?, ?, ?, current_timestamp, current_timestamp, ? )', $qry = new PgQuery( 'BEGIN; INSERT INTO caldav_data ( user_no, dav_name, dav_etag, caldav_data, caldav_type, logged_user, created, modified, collection_id, weak_etag ) VALUES( ?, ?, ?, ?, ?, ?, current_timestamp, current_timestamp, ?, ? )',
$user_no, $path, $etag, $caldav_data, $resource_type, $author, $collection_id ); $user_no, $path, $etag, $caldav_data, $resource_type, $author, $collection_id, $weak_etag );
if ( !$qry->Exec('PUT') ) { if ( !$qry->Exec('PUT') ) {
rollback_on_error( $caldav_context, $user_no, $path); rollback_on_error( $caldav_context, $user_no, $path);
return false; return false;