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<?php
/**
* BENNU - PHP iCalendar library
* (c) 2005-2006 Ioannis Papaioannou (pj@moodle.org). All rights reserved.
*
* Released under the LGPL.
*
* See http://bennu.sourceforge.net/ for more information and downloads.
*
* @author Ioannis Papaioannou
* @version $Id$
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
class iCalendar_parameter {
static function multiple_values_allowed($parameter) {
switch($parameter) {
case 'DELEGATED-FROM':
case 'DELEGATED-TO':
case 'MEMBER':
return true;
default:
return false;
}
}
static function default_value($parameter) {
switch($parameter) {
case 'CUTYPE': return 'INDIVIDUAL';
case 'FBTYPE': return 'BUSY';
case 'PARTSTAT': return 'NEEDS-ACTION';
case 'RELATED': return 'START';
case 'RELTYPE': return 'PARENT';
case 'ROLE': return 'REQ-PARTICIPANT';
case 'RSVP': return 'FALSE';
default: return NULL;
}
}
static function is_valid_value(&$parent_property, $parameter, $value) {
switch($parameter) {
// These must all be a URI
case 'ALTREP':
case 'DIR':
return rfc2445_is_valid_value($value, RFC2445_TYPE_URI);
break;
// These must be CAL-ADDRESS, which is equivalent to URI
case 'DELEGATED-FROM':
case 'DELEGATED-TO':
case 'MEMBER':
case 'SENT-BY':
return rfc2445_is_valid_value($value, RFC2445_TYPE_CAL_ADDRESS);
break;
// RFC-2445: can contain quotes.
case 'CN':
return true;
break;
// These have enumerated legal values
case 'CUTYPE':
$value = strtoupper($value);
return ($value == 'INDIVIDUAL' || $value == 'GROUP' || $value == 'RESOURCE' || $value == 'ROOM' || $value == 'UNKNOWN' || rfc2445_is_xname($value));
break;
case 'ENCODING':
$value = strtoupper($value);
return ($value == '8BIT' || $value == 'BASE64' || rfc2445_is_xname($value));
break;
case 'FBTYPE':
$value = strtoupper($value);
return ($value == 'FREE' || $value == 'BUSY' || $value == 'BUSY-UNAVAILABLE' || $value == 'BUSY-TENTATIVE' || rfc2445_is_xname($value));
break;
case 'FMTTYPE':
$fmttypes = array(
'TEXT' => array('PLAIN', 'RICHTEXT', 'ENRICHED', 'TAB-SEPARATED-VALUES', 'HTML', 'SGML',
'VND.LATEX-Z', 'VND.FMI.FLEXSTOR'),
'MULTIPART' => array('MIXED', 'ALTERNATIVE', 'DIGEST', 'PARALLEL', 'APPLEDOUBLE', 'HEADER-SET',
'FORM-DATA', 'RELATED', 'REPORT', 'VOICE-MESSAGE', 'SIGNED', 'ENCRYPTED',
'BYTERANGES'),
'MESSAGE' => array('RFC822', 'PARTIAL', 'EXTERNAL-BODY', 'NEWS', 'HTTP'),
'APPLICATION' => array('OCTET-STREAM', 'POSTSCRIPT', 'ODA', 'ATOMICMAIL', 'ANDREW-INSET', 'SLATE',
'WITA', 'DEC-DX', 'DCA-RFT', 'ACTIVEMESSAGE', 'RTF', 'APPLEFILE',
'MAC-BINHEX40', 'NEWS-MESSAGE-ID', 'NEWS-TRANSMISSION', 'WORDPERFECT5.1',
'PDF', 'ZIP', 'MACWRITEII', 'MSWORD', 'REMOTE-PRINTING', 'MATHEMATICA',
'CYBERCASH', 'COMMONGROUND', 'IGES', 'RISCOS', 'ESHOP', 'X400-BP', 'SGML',
'CALS-1840', 'PGP-ENCRYPTED', 'PGP-SIGNATURE', 'PGP-KEYS', 'VND.FRAMEMAKER',
'VND.MIF', 'VND.MS-EXCEL', 'VND.MS-POWERPOINT', 'VND.MS-PROJECT',
'VND.MS-WORKS', 'VND.MS-TNEF', 'VND.SVD', 'VND.MUSIC-NIFF', 'VND.MS-ARTGALRY',
'VND.TRUEDOC', 'VND.KOAN', 'VND.STREET-STREAM', 'VND.FDF',
'SET-PAYMENT-INITIATION', 'SET-PAYMENT', 'SET-REGISTRATION-INITIATION',
'SET-REGISTRATION', 'VND.SEEMAIL', 'VND.BUSINESSOBJECTS',
'VND.MERIDIAN-SLINGSHOT', 'VND.XARA', 'SGML-OPEN-CATALOG', 'VND.RAPID',
'VND.ENLIVEN', 'VND.JAPANNET-REGISTRATION-WAKEUP',
'VND.JAPANNET-VERIFICATION-WAKEUP', 'VND.JAPANNET-PAYMENT-WAKEUP',
'VND.JAPANNET-DIRECTORY-SERVICE', 'VND.INTERTRUST.DIGIBOX', 'VND.INTERTRUST.NNCP'),
'IMAGE' => array('JPEG', 'GIF', 'IEF', 'G3FAX', 'TIFF', 'CGM', 'NAPLPS', 'VND.DWG', 'VND.SVF',
'VND.DXF', 'PNG', 'VND.FPX', 'VND.NET-FPX'),
'AUDIO' => array('BASIC', '32KADPCM', 'VND.QCELP'),
'VIDEO' => array('MPEG', 'QUICKTIME', 'VND.VIVO', 'VND.MOTOROLA.VIDEO', 'VND.MOTOROLA.VIDEOP')
);
$value = strtoupper($value);
// Mimetype is enumerated above and anything else results in false.
@list($type, $subtype) = explode('/', $value);
if(empty($type) || empty($subtype)) {
return false;
}
if(!isset($fmttypes[$type]) || !in_array($subtype, $fmttypes[$type])) {
return false;
}
return true;
break;
case 'LANGUAGE':
$value = strtoupper($value);
$parts = explode('-', $value);
foreach($parts as $part) {
if(empty($part)) {
return false;
}
if(strspn($part, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789') != strlen($part)) {
return false;
}
}
return true;
break;
case 'PARTSTAT':
$value = strtoupper($value);
switch($parent_property->parent_component) {
case 'VEVENT':
return ($value == 'NEEDS-ACTION' || $value == 'ACCEPTED' || $value == 'DECLINED' || $value == 'TENTATIVE'
|| $value == 'DELEGATED' || rfc2445_is_xname($value));
break;
case 'VTODO':
return ($value == 'NEEDS-ACTION' || $value == 'ACCEPTED' || $value == 'DECLINED' || $value == 'TENTATIVE'
|| $value == 'DELEGATED' || $value == 'COMPLETED' || $value == 'IN-PROCESS' || rfc2445_is_xname($value));
break;
case 'VJOURNAL':
return ($value == 'NEEDS-ACTION' || $value == 'ACCEPTED' || $value == 'DECLINED' || rfc2445_is_xname($value));
break;
}
return false;
break;
case 'RANGE':
$value = strtoupper($value);
return ($value == 'THISANDPRIOR' || $value == 'THISANDFUTURE');
break;
case 'RELATED':
$value = strtoupper($value);
return ($value == 'START' || $value == 'END');
break;
case 'RELTYPE':
$value = strtoupper($value);
return ($value == 'PARENT' || $value == 'CHILD' || $value == 'SIBLING' || rfc2445_is_xname($value));
break;
case 'ROLE':
$value = strtoupper($value);
return ($value == 'CHAIR' || $value == 'REQ-PARTICIPANT' || $value == 'OPT-PARTICIPANT' || $value == 'NON-PARTICIPANT' || rfc2445_is_xname($value));
break;
case 'RSVP':
$value = strtoupper($value);
return ($value == 'TRUE' || $value == 'FALSE');
break;
case 'TZID':
if(empty($value)) {
return false;
}
return (strcspn($value, ';:,') == strlen($value));
break;
case 'VALUE':
$value = strtoupper($value);
return ($value == 'BINARY' || $value == 'BOOLEAN' || $value == 'CAL-ADDRESS' || $value == 'DATE' ||
$value == 'DATE-TIME' || $value == 'DURATION' || $value == 'FLOAT' || $value == 'INTEGER' ||
$value == 'PERIOD' || $value == 'RECUR' || $value == 'TEXT' || $value == 'TIME' ||
$value == 'URI' || $value == 'UTC-OFFSET' || rfc2445_is_xname($value));
break;
}
}
static function do_value_formatting($parameter, $value) {
switch($parameter) {
// Parameters of type CAL-ADDRESS or URI MUST be double-quoted
case 'ALTREP':
case 'DIR':
case 'DELEGATED-FROM':
case 'DELEGATED-TO':
case 'MEMBER':
case 'SENT-BY':
return '"'.$value.'"';
break;
// Textual parameter types must be double quoted if they contain COLON, SEMICOLON
// or COMMA. Quoting always sounds easier and standards-conformant though.
case 'CN':
return '"'.$value.'"';
break;
// Parameters with enumerated legal values, just make them all caps
case 'CUTYPE':
case 'ENCODING':
case 'FBTYPE':
case 'FMTTYPE':
case 'LANGUAGE':
case 'PARTSTAT':
case 'RANGE':
case 'RELATED':
case 'RELTYPE':
case 'ROLE':
case 'RSVP':
case 'VALUE':
return strtoupper($value);
break;
// Parameters we shouldn't be messing with
case 'TZID':
return str_replace('"', '', $value);
break;
}
}
static function undo_value_formatting($parameter, $value) {
}
}