mirror of
https://gitlab.com/davical-project/davical.git
synced 2026-01-28 00:43:37 +00:00
226 lines
8.3 KiB
PHP
226 lines
8.3 KiB
PHP
<?php
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/**
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* CalDAV Server - handle PROPPATCH method
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*
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* @package rscds
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* @subpackage caldav
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* @author Andrew McMillan <andrew@catalyst.net.nz>
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* @copyright Catalyst .Net Ltd
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* @license http://gnu.org/copyleft/gpl.html GNU GPL v2
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*/
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dbg_error_log("PROPPATCH", "method handler");
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if ( ! $request->AllowedTo('write-properties') ) {
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$request->DoResponse( 403 );
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}
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$position = 0;
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$xmltree = BuildXMLTree( $request->xml_tags, $position);
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// echo $xmltree->Render();
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if ( $xmltree->GetTag() != "DAV::PROPERTYUPDATE" ) {
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$request->DoResponse( 403 );
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}
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/**
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* Find the properties being set, and the properties being removed
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*/
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$setprops = $xmltree->GetPath("/DAV::PROPERTYUPDATE/DAV::SET/DAV::PROP/*");
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$rmprops = $xmltree->GetPath("/DAV::PROPERTYUPDATE/DAV::REMOVE/DAV::PROP/*");
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/**
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* We build full status responses for failures. For success we just record
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* it, since the multistatus response only applies to failure. While it is
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* not explicitly stated in RFC2518, from reading between the lines (8.2.1)
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* a success will return 200 OK [with an empty response].
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*/
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$failure = array();
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$success = array();
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/**
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* Not much for it but to process the incoming settings in a big loop, doing
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* the special-case stuff as needed and falling through to a default which
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* stuffs the property somewhere we will be able to retrieve it from later.
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*/
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$sql = "BEGIN;";
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foreach( $setprops AS $k => $setting ) {
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$tag = $setting->GetTag();
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$content = $setting->RenderContent();
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switch( $tag ) {
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case 'DAV::DISPLAYNAME':
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/**
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* Can't set displayname on resources - only collections or principals
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*/
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if ( $request->IsCollection() || $request->IsPrincipal() ) {
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if ( $request->IsCollection() ) {
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$sql .= sprintf( "UPDATE collection SET dav_displayname = %s, modified = current_timestamp WHERE dav_name = %s;",
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qpg($content), qpg($request->path) );
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}
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else {
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$sql .= sprintf( "UPDATE usr SET fullname = %s, updated = current_timestamp WHERE user_no = %s;",
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qpg($content), $request->user_no );
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}
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$success[$tag] = 1;
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}
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else {
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$failure['set-'.$tag] = new XMLElement( 'propstat', array(
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new XMLElement( 'prop', new XMLElement($tag)),
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new XMLElement( 'status', 'HTTP/1.1 409 Conflict' ),
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new XMLElement( 'responsedescription', translate("The displayname may only be set on collections or principals.") )
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));
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}
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break;
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case 'DAV::RESOURCETYPE':
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/**
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* We don't allow a collection to change to/from a resource. Only collections may be CalDAV calendars.
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*/
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$setcollection = count($setting->GetPath('DAV::RESOURCETYPE/DAV::COLLECTION'));
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$setcalendar = count($setting->GetPath('DAV::RESOURCETYPE/urn:ietf:params:xml:ns:caldav:calendar'));
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if ( $request->IsCollection() && ($setcollection || $setcalendar) ) {
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if ( $setcalendar ) {
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$sql .= sprintf( "UPDATE collection SET is_calendar = TRUE WHERE dav_name = %s;", qpg($request->path) );
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}
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$success[$tag] = 1;
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}
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else {
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$failure['set-'.$tag] = new XMLElement( 'propstat', array(
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new XMLElement( 'prop', new XMLElement($tag)),
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new XMLElement( 'status', 'HTTP/1.1 409 Conflict' ),
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new XMLElement( 'responsedescription', translate("Resources may not be changed to / from collections.") )
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));
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}
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break;
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/**
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* The following properties are read-only, so they will cause the request to fail
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*/
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case 'DAV::GETETAG':
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case 'DAV::GETCONTENTLENGTH':
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case 'DAV::GETCONTENTTYPE':
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case 'DAV::GETLASTMODIFIED':
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case 'DAV::CREATIONDATE':
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case 'DAV::LOCKDISCOVERY':
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case 'DAV::SUPPORTEDLOCK':
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$failure['set-'.$tag] = new XMLElement( 'propstat', array(
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new XMLElement( 'prop', new XMLElement($tag)),
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new XMLElement( 'status', 'HTTP/1.1 409 Conflict' ),
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new XMLElement('responsedescription', translate("Property is read-only") )
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));
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break;
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/**
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* If we don't have any special processing for the property, we just store it verbatim (which will be an XML fragment).
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*/
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default:
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$sql .= awl_replace_sql_args( "SELECT set_dav_property( ?, ?, ?, ? );", $request->path, $request->user_no, $tag, $content );
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$success[$tag] = 1;
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break;
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}
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}
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foreach( $rmprops AS $k => $setting ) {
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$tag = $setting->GetTag();
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$content = $setting->RenderContent();
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switch( $tag ) {
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case 'DAV::RESOURCETYPE':
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/**
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* We don't allow a collection to change to/from a resource. Only collections may be CalDAV calendars.
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*/
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$rmcollection = (count($setting->GetPath('DAV::RESOURCETYPE/DAV::COLLECTION')) > 0);
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$rmcalendar = (count($setting->GetPath('DAV::RESOURCETYPE/urn:ietf:params:xml:ns:caldav:calendar')) > 0);
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if ( $request->IsCollection() && !$rmcollection ) {
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dbg_error_log( 'PROPPATCH', ' RMProperty %s : IsCollection=%d, rmcoll=%d, rmcal=%d', $tag, $request->IsCollection(), $rmcollection, $rmcalendar );
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if ( $rmcalendar ) {
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$sql .= sprintf( "UPDATE collection SET is_calendar = FALSE WHERE dav_name = %s;", qpg($request->path) );
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}
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$success[$tag] = 1;
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}
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else {
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$failure['rm-'.$tag] = new XMLElement( 'propstat', array(
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new XMLElement( 'prop', new XMLElement($tag)),
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new XMLElement( 'status', 'HTTP/1.1 409 Conflict' ),
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new XMLElement( 'responsedescription', translate("Resources may not be changed to / from collections.") )
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));
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dbg_error_log( 'PROPPATCH', ' RMProperty %s Resources may not be changed to / from Collections.', $tag);
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}
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break;
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/**
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* The following properties are read-only, so they will cause the request to fail
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*/
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case 'DAV::GETETAG':
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case 'DAV::GETCONTENTLENGTH':
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case 'DAV::GETCONTENTTYPE':
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case 'DAV::GETLASTMODIFIED':
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case 'DAV::CREATIONDATE':
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case 'DAV::DISPLAYNAME':
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case 'DAV::LOCKDISCOVERY':
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case 'DAV::SUPPORTEDLOCK':
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$failure['rm-'.$tag] = new XMLElement( 'propstat', array(
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new XMLElement( 'prop', new XMLElement($tag)),
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new XMLElement( 'status', 'HTTP/1.1 409 Conflict' ),
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new XMLElement('responsedescription', translate("Property is read-only") )
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));
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dbg_error_log( 'PROPPATCH', ' RMProperty %s is read only and cannot be removed', $tag);
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break;
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/**
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* If we don't have any special processing then we must have to just delete it. Nonexistence is not failure.
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*/
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default:
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$sql .= awl_replace_sql_args( "DELETE FROM property WHERE dav_name=? AND property_name=?;", $request->path, $tag );
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$success[$tag] = 1;
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break;
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}
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}
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/**
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* If we have encountered any instances of failure, the whole damn thing fails.
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*/
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if ( count($failure) > 0 ) {
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foreach( $success AS $tag => $v ) {
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// Unfortunately although these succeeded, we failed overall, so they didn't happen...
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$failure[] = new XMLElement( 'propstat', array(
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new XMLElement( 'prop', new XMLElement($tag)),
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new XMLElement( 'status', 'HTTP/1.1 424 Failed Dependency' ),
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));
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}
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array_unshift( $failure, new XMLElement('href', $c->protocol_server_port_script . $request->path ) );
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$failure[] = new XMLElement('responsedescription', translate("Some properties were not able to be changed.") );
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$multistatus = new XMLElement( "multistatus", new XMLElement( 'response', $failure ), array('xmlns'=>'DAV:') );
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$request->DoResponse( 207, $multistatus->Render(0,'<?xml version="1.0" encoding="utf-8" ?>'), 'text/xml; charset="utf-8"' );
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}
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/**
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* Otherwise we will try and do the SQL. This is inside a transaction, so PostgreSQL guarantees the atomicity
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*/
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$sql .= "COMMIT;";
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$qry = new PgQuery( $sql );
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if ( $qry->Exec() ) {
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$href = new XMLElement('href', $c->protocol_server_port_script . $request->path );
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$desc = new XMLElement('responsedescription', translate("All requested changes were made.") );
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$multistatus = new XMLElement( "multistatus", new XMLElement( 'response', array( $href, $desc ) ), array('xmlns'=>'DAV:') );
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$request->DoResponse( 200, $multistatus->Render(0,'<?xml version="1.0" encoding="utf-8" ?>'), 'text/xml; charset="utf-8"' );
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}
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/**
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* Or it was all crap.
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*/
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$request->DoResponse( 500 );
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exit(0);
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?>
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