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