1310 lines
41 KiB
PHP
1310 lines
41 KiB
PHP
<?php
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/**
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* Copyright 2014 Michael Palm <palm.michael@gmx.de>
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*
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* This file is heavily based on AgenDAV caldav-client-v2.php by
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* Jorge López Pérez <jorge@adobo.org> which is again heavily based
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* on DAViCal caldav-client-v2.php by Andrew McMillan
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* <andrew@mcmillan.net.nz>
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*
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* @package simpleCalDAV
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*/
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require_once('CalDAVCalendar.php');
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require_once('include/XMLDocument.php');
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class CalDAVClient {
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/**
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* Server, username, password, calendar
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*
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* @var string
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*/
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protected $base_url, $user, $pass, $entry, $protocol, $server, $port;
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/**
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* The principal-URL we're using
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*/
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protected $principal_url;
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/**
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* The calendar-URL we're using
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*/
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public $calendar_url;
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/**
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* The calendar-home-set we're using
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*/
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protected $calendar_home_set;
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/**
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* The calendar_urls we have discovered
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*/
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protected $calendar_urls;
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/**
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* The useragent which is send to the caldav server
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*
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* @var string
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*/
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public $user_agent = 'simpleCalDAVclient';
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protected $headers = array();
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protected $body = "";
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protected $requestMethod = "GET";
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protected $httpRequest = ""; // for debugging http headers sent
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protected $xmlRequest = ""; // for debugging xml sent
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protected $httpResponse = ""; // http headers received
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protected $xmlResponse = ""; // xml received
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protected $httpResultCode = "";
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protected $parser; // our XML parser object
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// Requests timeout
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private $timeout;
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// cURL handle
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private $ch;
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// Full URL
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private $full_url;
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// First part of the full url
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public $first_url_part;
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/**
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* Constructor
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*
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* Valid options are:
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*
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* $options['auth'] : Auth type. Can be any of values for
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* CURLOPT_HTTPAUTH (from
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* http://www.php.net/manual/es/function.curl-setopt.php). Default:
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* basic or digest
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*
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* $options['timeout'] : Timeout in seconds
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*/
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// TODO: proxy options, interface used,
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function __construct( $base_url, $user, $pass, $options = array()) {
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$this->user = $user;
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$this->pass = $pass;
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$this->headers = array();
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if ( preg_match( '#^((https?)://([a-z0-9.-]+)(:([0-9]+))?)(/.*)$#', $base_url, $matches ) ) {
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$this->server = $matches[3];
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$this->base_url = $matches[6];
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if ( $matches[2] == 'https' ) {
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$this->protocol = 'ssl';
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$this->port = 443;
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}
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else {
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$this->protocol = 'tcp';
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$this->port = 80;
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}
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if ( $matches[4] != '' ) {
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$this->port = intval($matches[5]);
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}
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} else {
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trigger_error("Invalid URL: '".$base_url."'", E_USER_ERROR);
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}
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$this->timeout = isset($options['timeout']) ?
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$options['timeout'] : 10;
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$this->ch = curl_init();
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curl_setopt_array($this->ch, array(
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CURLOPT_CONNECTTIMEOUT => $this->timeout,
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CURLOPT_FAILONERROR => FALSE,
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CURLOPT_MAXREDIRS => 2,
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CURLOPT_FORBID_REUSE => FALSE,
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CURLOPT_RETURNTRANSFER => TRUE,
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CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
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CURLOPT_HTTPAUTH =>
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isset($options['auth']) ? $options['auth'] :
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(CURLAUTH_BASIC | CURLAUTH_DIGEST),
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CURLOPT_USERAGENT => 'cURL based CalDAV client',
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CURLINFO_HEADER_OUT => TRUE,
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CURLOPT_HEADER => TRUE,
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CURLOPT_SSL_VERIFYPEER => FALSE
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));
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$this->full_url = $base_url;
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$this->first_url_part = $matches[1];
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}
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/**
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* Check with OPTIONS if calendar-access is enabled
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*
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* Can be used to check authentication against server
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*
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*/
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function isValidCalDAVServer() {
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// Clean headers
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$this->headers = array();
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$dav_options = $this->DoOptionsRequestAndGetDAVHeader();
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$valid_caldav_server = isset($dav_options['calendar-access']);
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return $valid_caldav_server;
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}
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/**
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* Issues an OPTIONS request
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*
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* @param string $url The URL to make the request to
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*
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* @return array DAV options
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*/
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function DoOptionsRequestAndGetDAVHeader( $url = null ) {
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$this->requestMethod = "OPTIONS";
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$this->body = "";
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$headers = $this->DoRequest($url);
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$result = array();
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$headers = preg_split('/\r?\n/', $headers);
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// DAV header(s)
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$dav_header = preg_grep('/^DAV:/', $headers);
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if (is_array($dav_header)) {
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$dav_header = array_values($dav_header);
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$dav_header = preg_replace('/^DAV: /', '', $dav_header);
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$dav_options = array();
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foreach ($dav_header as $d) {
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$dav_options = array_merge($dav_options,
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array_flip(preg_split('/[, ]+/', $d)));
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}
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$result = $dav_options;
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}
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return $result;
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}
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/**
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* Adds an If-Match or If-None-Match header
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*
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* @param bool $match to Match or Not to Match, that is the question!
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* @param string $etag The etag to match / not match against.
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*/
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function SetMatch( $match, $etag = '*' ) {
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$this->headers['match'] = sprintf( "%s-Match: \"%s\"", ($match ? "If" : "If-None"), $etag);
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}
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/**
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* Add a Depth: header. Valid values are 0, 1 or infinity
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*
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* @param int $depth The depth, default to infinity
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*/
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function SetDepth( $depth = '0' ) {
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$this->headers['depth'] = 'Depth: '. ($depth == '1' ? "1" : ($depth == 'infinity' ? $depth : "0") );
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}
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/**
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* Add a Depth: header. Valid values are 1 or infinity
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*
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* @param int $depth The depth, default to infinity
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*/
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function SetUserAgent( $user_agent = null ) {
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$this->user_agent = $user_agent;
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curl_setopt($this->ch, CURLOPT_USERAGENT, $user_agent);
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}
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/**
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* Add a Content-type: header.
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*
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* @param string $type The content type
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*/
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function SetContentType( $type ) {
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$this->headers['content-type'] = "Content-type: $type";
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}
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/**
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* Set the calendar_url we will be using for a while.
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*
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* @param string $url The calendar_url
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*/
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function SetCalendar( $url ) {
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$this->calendar_url = $url;
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}
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/**
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* Split response into httpResponse and xmlResponse
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*
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* @param string Response from server
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*/
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function ParseResponse( $response ) {
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$pos = strpos($response, '<?xml');
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if ($pos === false) {
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$this->httpResponse = trim($response);
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}
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else {
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$this->httpResponse = trim(substr($response, 0, $pos));
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$this->xmlResponse = trim(substr($response, $pos));
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$this->xmlResponse = preg_replace('{>[^>]*$}s', '>',$this->xmlResponse );
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$parser = xml_parser_create_ns('UTF-8');
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xml_parser_set_option ( $parser, XML_OPTION_SKIP_WHITE, 1 );
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xml_parser_set_option ( $parser, XML_OPTION_CASE_FOLDING, 0 );
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if ( xml_parse_into_struct( $parser, $this->xmlResponse, $this->xmlnodes, $this->xmltags ) === 0 ) {
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//printf( "XML parsing error: %s - %s\n", xml_get_error_code($parser), xml_error_string(xml_get_error_code($parser)) );
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// debug_print_backtrace();
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// echo "\nNodes array............................................................\n"; print_r( $this->xmlnodes );
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// echo "\nTags array............................................................\n"; print_r( $this->xmltags );
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//printf( "\nXML Reponse:\n%s\n", $this->xmlResponse );
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log_message('ERROR', 'XML parsing error: '
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. xml_get_error_code($parser) . ', '
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. xml_error_string(xml_get_error_code($parser)));
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}
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xml_parser_free($parser);
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}
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}
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/**
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* Parse response headers
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*/
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function ParseResponseHeaders($headers) {
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$lines = preg_split('/[\r\n]+/', $headers);
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$this->httpResultCode = preg_replace('/^[\S]+ (\d+).+$/', '\1',
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$lines[0]);
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}
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/**
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* Output http request headers
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*
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* @return HTTP headers
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*/
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function GetHttpRequest() {
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return $this->httpRequest;
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}
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/**
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* Output http response headers
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*
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* @return HTTP headers
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*/
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function GetResponseHeaders() {
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return $this->httpResponseHeaders;
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}
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/**
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* Output http response body
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*
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* @return HTTP body
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*/
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function GetResponseBody() {
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return $this->httpResponseBody;
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}
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/**
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* Output request body
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*
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* @return raw xml
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*/
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function GetBody() {
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return $this->body;
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}
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/**
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* Output xml response
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*
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* @return raw xml
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*/
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function GetXmlResponse() {
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return $this->xmlResponse;
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}
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/**
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* Output HTTP status code
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*
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* @return string HTTP status code
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*/
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function GetHttpResultCode() {
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return $this->httpResultCode;
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}
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/**
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* Send a request to the server
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*
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* @param string $url The URL to make the request to
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*
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* @return string The content of the response from the server
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*/
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function DoRequest( $url = null ) {
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if (is_null($url)) {
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$url = $this->full_url;
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}
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$this->request_url = $url;
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curl_setopt($this->ch, CURLOPT_URL, $url);
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// Request method
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curl_setopt($this->ch, CURLOPT_CUSTOMREQUEST, $this->requestMethod);
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// Empty body. If not used, cURL will spend ~5s on this request
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if ($this->requestMethod == 'HEAD' || empty($this->body) ) {
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curl_setopt($this->ch, CURLOPT_NOBODY, TRUE);
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} else {
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curl_setopt($this->ch, CURLOPT_NOBODY, FALSE);
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}
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// Headers
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if (!isset($this->headers['content-type'])) $this->headers['content-type'] = "Content-type: text/plain";
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// Remove cURL generated 'Expect: 100-continue'
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$this->headers['disable_expect'] = 'Expect:';
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curl_setopt($this->ch, CURLOPT_HTTPHEADER,
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array_values($this->headers));
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curl_setopt($this->ch, CURLOPT_USERPWD, $this->user . ':' .
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$this->pass);
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// Request body
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curl_setopt($this->ch, CURLOPT_POSTFIELDS, $this->body);
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// Save Request
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curl_setopt($this->ch, CURLINFO_HEADER_OUT, TRUE);
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$response = curl_exec($this->ch);
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if (FALSE === $response) {
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// TODO better error handling
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log_message('ERROR', 'Error requesting ' . $url . ': '
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. curl_error($this->ch));
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return false;
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}
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$info = curl_getinfo($this->ch);
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// Save request
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$this->httpRequest = $info['request_header'];
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// Get headers (idea from SabreDAV WebDAV client)
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$this->httpResponseHeaders = substr($response, 0, $info['header_size']);
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$this->httpResponseBody = substr($response, $info['header_size']);
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// Get only last headers (needed when using unspecific HTTP auth
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// method or request got redirected)
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$this->httpResponseHeaders = preg_replace('/^.+\r\n\r\n(.+)/sU', '$1',
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$this->httpResponseHeaders);
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// Parse response
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$this->ParseResponseHeaders($this->httpResponseHeaders);
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$this->ParseResponse($this->httpResponseBody);
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//TODO debug
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/*
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log_message('INTERNALS', 'REQh: ' . var_export($info['request_header'], TRUE));
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log_message('INTERNALS', 'REQb: ' . var_export($this->body, TRUE));
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log_message('INTERNALS', 'RPLh: ' . var_export($this->httpResponseHeaders, TRUE));
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log_message('INTERNALS', 'RPLb: ' . var_export($this->httpResponseBody, TRUE));
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*/
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return $response;
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}
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/**
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* Send an OPTIONS request to the server
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*
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* @param string $url The URL to make the request to
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*
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* @return array The allowed options
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*/
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function DoOptionsRequest( $url = null ) {
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$this->requestMethod = "OPTIONS";
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$this->body = "";
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$headers = $this->DoRequest($url);
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$options_header = preg_replace( '/^.*Allow: ([a-z, ]+)\r?\n.*/is', '$1', $headers );
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$options = array_flip( preg_split( '/[, ]+/', $options_header ));
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return $options;
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}
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/**
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* Send an XML request to the server (e.g. PROPFIND, REPORT, MKCALENDAR)
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*
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* @param string $method The method (PROPFIND, REPORT, etc) to use with the request
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* @param string $xml The XML to send along with the request
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* @param string $url The URL to make the request to
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*
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* @return array An array of the allowed methods
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*/
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function DoXMLRequest( $request_method, $xml, $url = null ) {
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$this->body = $xml;
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$this->requestMethod = $request_method;
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$this->SetContentType("text/xml");
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return $this->DoRequest($url);
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}
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/**
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* Get a single item from the server.
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*
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* @param string $url The URL to GET
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*/
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function DoGETRequest( $url ) {
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$this->body = "";
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$this->requestMethod = "GET";
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return $this->DoRequest( $url );
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}
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/**
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* Get the HEAD of a single item from the server.
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*
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* @param string $url The URL to HEAD
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*/
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function DoHEADRequest( $url ) {
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$this->body = "";
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$this->requestMethod = "HEAD";
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return $this->DoRequest( $url );
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}
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/**
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* PUT a text/icalendar resource, returning the etag
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*
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* @param string $url The URL to make the request to
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* @param string $icalendar The iCalendar resource to send to the server
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* @param string $etag The etag of an existing resource to be overwritten, or '*' for a new resource.
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*
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* @return string The content of the response from the server
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*/
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function DoPUTRequest( $url, $icalendar, $etag = null ) {
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$this->body = $icalendar;
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$this->requestMethod = "PUT";
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if ( $etag != null ) {
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$this->SetMatch( ($etag != '*'), $etag );
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}
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$this->SetContentType('text/calendar; encoding="utf-8"');
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$this->DoRequest($url);
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$etag = null;
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if ( preg_match( '{^ETag:\s+"([^"]*)"\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
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else if ( preg_match( '{^ETag:\s+([^\s]*)\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
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if ( !isset($etag) || $etag == '' ) {
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// Try with HEAD
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$save_request = $this->httpRequest;
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$save_response_headers = $this->httpResponseHeaders;
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$save_http_result = $this->httpResultCode;
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$this->DoHEADRequest( $url );
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if ( preg_match( '{^Etag:\s+"([^"]*)"\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
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else if ( preg_match( '{^ETag:\s+([^\s]*)\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
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/*
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if ( !isset($etag) || $etag == '' ) {
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printf( "Still No etag in:\n%s\n", $this->httpResponseHeaders );
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}
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*/
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$this->httpRequest = $save_request;
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$this->httpResponseHeaders = $save_response_headers;
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$this->httpResultCode = $save_http_result;
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}
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return $etag;
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}
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/**
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* DELETE a text/icalendar resource
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*
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* @param string $url The URL to make the request to
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* @param string $etag The etag of an existing resource to be deleted, or '*' for any resource at that URL.
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*
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* @return int The HTTP Result Code for the DELETE
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*/
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function DoDELETERequest( $url, $etag = null ) {
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$this->body = "";
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$this->requestMethod = "DELETE";
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if ( $etag != null ) {
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$this->SetMatch( true, $etag );
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}
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$this->DoRequest($url);
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return $this->httpResultCode;
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}
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/**
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* Get a single item from the server.
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*
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* @param string $url The URL to PROPFIND on
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*/
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|
function DoPROPFINDRequest( $url, $props, $depth = 0 ) {
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$this->SetDepth($depth);
|
|
$xml = new XMLDocument( array( 'DAV:' => '', 'urn:ietf:params:xml:ns:caldav' => 'C' ) );
|
|
$prop = new XMLElement('prop');
|
|
foreach( $props AS $v ) {
|
|
$xml->NSElement($prop,$v);
|
|
}
|
|
|
|
$this->body = $xml->Render('propfind',$prop );
|
|
|
|
$this->requestMethod = 'PROPFIND';
|
|
$this->SetContentType('text/xml');
|
|
$this->DoRequest($url);
|
|
return $this->GetXmlResponse();
|
|
}
|
|
|
|
|
|
/**
|
|
* Get/Set the Principal URL
|
|
*
|
|
* @param $url string The Principal URL to set
|
|
*/
|
|
function PrincipalURL( $url = null ) {
|
|
if ( isset($url) ) {
|
|
$this->principal_url = $url;
|
|
}
|
|
return $this->principal_url;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get/Set the calendar-home-set URL
|
|
*
|
|
* @param $url array of string The calendar-home-set URLs to set
|
|
*/
|
|
function CalendarHomeSet( $urls = null ) {
|
|
if ( isset($urls) ) {
|
|
if ( ! is_array($urls) ) $urls = array($urls);
|
|
$this->calendar_home_set = $urls;
|
|
}
|
|
return $this->calendar_home_set;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get/Set the calendar-home-set URL
|
|
*
|
|
* @param $urls array of string The calendar URLs to set
|
|
*/
|
|
function CalendarUrls( $urls = null ) {
|
|
if ( isset($urls) ) {
|
|
if ( ! is_array($urls) ) $urls = array($urls);
|
|
$this->calendar_urls = $urls;
|
|
}
|
|
return $this->calendar_urls;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the first occurrence of an href inside the named tag.
|
|
*
|
|
* @param string $tagname The tag name to find the href inside of
|
|
*/
|
|
function HrefValueInside( $tagname ) {
|
|
foreach( $this->xmltags[$tagname] AS $k => $v ) {
|
|
$j = $v + 1;
|
|
if ( $this->xmlnodes[$j]['tag'] == 'DAV::href' ) {
|
|
return rawurldecode($this->xmlnodes[$j]['value']);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the href containing this property. Except only if it's inside a status != 200
|
|
*
|
|
* @param string $tagname The tag name of the property to find the href for
|
|
* @param integer $which Which instance of the tag should we use
|
|
*/
|
|
function HrefForProp( $tagname, $i = 0 ) {
|
|
if ( isset($this->xmltags[$tagname]) && isset($this->xmltags[$tagname][$i]) ) {
|
|
$j = $this->xmltags[$tagname][$i];
|
|
while( $j-- > 0 && $this->xmlnodes[$j]['tag'] != 'DAV::href' ) {
|
|
// printf( "Node[$j]: %s\n", $this->xmlnodes[$j]['tag']);
|
|
if ( $this->xmlnodes[$j]['tag'] == 'DAV::status' && $this->xmlnodes[$j]['value'] != 'HTTP/1.1 200 OK' ) return null;
|
|
}
|
|
// printf( "Node[$j]: %s\n", $this->xmlnodes[$j]['tag']);
|
|
if ( $j > 0 && isset($this->xmlnodes[$j]['value']) ) {
|
|
// printf( "Value[$j]: %s\n", $this->xmlnodes[$j]['value']);
|
|
return rawurldecode($this->xmlnodes[$j]['value']);
|
|
}
|
|
}
|
|
else {
|
|
// printf( "xmltags[$tagname] or xmltags[$tagname][$i] is not set\n");
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the href which has a resourcetype of the specified type
|
|
*
|
|
* @param string $tagname The tag name of the resourcetype to find the href for
|
|
* @param integer $which Which instance of the tag should we use
|
|
*/
|
|
function HrefForResourcetype( $tagname, $i = 0 ) {
|
|
if ( isset($this->xmltags[$tagname]) && isset($this->xmltags[$tagname][$i]) ) {
|
|
$j = $this->xmltags[$tagname][$i];
|
|
while( $j-- > 0 && $this->xmlnodes[$j]['tag'] != 'DAV::resourcetype' );
|
|
if ( $j > 0 ) {
|
|
while( $j-- > 0 && $this->xmlnodes[$j]['tag'] != 'DAV::href' );
|
|
if ( $j > 0 && isset($this->xmlnodes[$j]['value']) ) {
|
|
return rawurldecode($this->xmlnodes[$j]['value']);
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return the <prop> ... </prop> of a propstat where the status is OK
|
|
*
|
|
* @param string $nodenum The node number in the xmlnodes which is the href
|
|
*/
|
|
function GetOKProps( $nodenum ) {
|
|
$props = null;
|
|
$level = $this->xmlnodes[$nodenum]['level'];
|
|
$status = '';
|
|
while ( $this->xmlnodes[++$nodenum]['level'] >= $level ) {
|
|
if ( $this->xmlnodes[$nodenum]['tag'] == 'DAV::propstat' ) {
|
|
if ( $this->xmlnodes[$nodenum]['type'] == 'open' ) {
|
|
$props = array();
|
|
$status = '';
|
|
}
|
|
else {
|
|
if ( $status == 'HTTP/1.1 200 OK' ) break;
|
|
}
|
|
}
|
|
elseif ( !isset($this->xmlnodes[$nodenum]) || !is_array($this->xmlnodes[$nodenum]) ) {
|
|
break;
|
|
}
|
|
elseif ( $this->xmlnodes[$nodenum]['tag'] == 'DAV::status' ) {
|
|
$status = $this->xmlnodes[$nodenum]['value'];
|
|
}
|
|
else {
|
|
$props[] = $this->xmlnodes[$nodenum];
|
|
}
|
|
}
|
|
return $props;
|
|
}
|
|
|
|
|
|
/**
|
|
* Attack the given URL in an attempt to find a principal URL
|
|
*
|
|
* @param string $url The URL to find the principal-URL from
|
|
*/
|
|
function FindPrincipal( $url = null ) {
|
|
$xml = $this->DoPROPFINDRequest( $url, array('resourcetype', 'current-user-principal', 'owner', 'principal-URL',
|
|
'urn:ietf:params:xml:ns:caldav:calendar-home-set'), 1);
|
|
|
|
$principal_url = $this->HrefForProp('DAV::principal');
|
|
|
|
if ( !isset($principal_url) ) {
|
|
foreach( array('DAV::current-user-principal', 'DAV::principal-URL', 'DAV::owner') AS $href ) {
|
|
if ( !isset($principal_url) ) {
|
|
$principal_url = $this->HrefValueInside($href);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $this->PrincipalURL($principal_url);
|
|
}
|
|
|
|
|
|
/**
|
|
* Attack the given URL in an attempt to find the calendar-home-url of the current principal
|
|
*
|
|
* @param string $url The URL to find the calendar-home-set from
|
|
*/
|
|
function FindCalendarHome( $recursed=false ) {
|
|
if ( !isset($this->principal_url) ) {
|
|
$this->FindPrincipal();
|
|
}
|
|
if ( $recursed ) {
|
|
$this->DoPROPFINDRequest( $this->first_url_part.$this->principal_url, array('urn:ietf:params:xml:ns:caldav:calendar-home-set'), 0);
|
|
}
|
|
|
|
$calendar_home = array();
|
|
foreach( $this->xmltags['urn:ietf:params:xml:ns:caldav:calendar-home-set'] AS $k => $v ) {
|
|
if ( $this->xmlnodes[$v]['type'] != 'open' ) continue;
|
|
while( $this->xmlnodes[++$v]['type'] != 'close' && $this->xmlnodes[$v]['tag'] != 'urn:ietf:params:xml:ns:caldav:calendar-home-set' ) {
|
|
// printf( "Tag: '%s' = '%s'\n", $this->xmlnodes[$v]['tag'], $this->xmlnodes[$v]['value']);
|
|
if ( $this->xmlnodes[$v]['tag'] == 'DAV::href' && isset($this->xmlnodes[$v]['value']) )
|
|
$calendar_home[] = rawurldecode($this->xmlnodes[$v]['value']);
|
|
}
|
|
}
|
|
|
|
if ( !$recursed && count($calendar_home) < 1 ) {
|
|
$calendar_home = $this->FindCalendarHome(true);
|
|
}
|
|
|
|
return $this->CalendarHomeSet($calendar_home);
|
|
}
|
|
|
|
/*
|
|
* Find own calendars
|
|
*/
|
|
function FindCalendars( $recursed=false ) {
|
|
if ( !isset($this->calendar_home_set[0]) ) {
|
|
$this->FindCalendarHome($recursed);
|
|
}
|
|
$properties =
|
|
array(
|
|
'resourcetype',
|
|
'displayname',
|
|
'http://calendarserver.org/ns/:getctag',
|
|
'http://apple.com/ns/ical/:calendar-color',
|
|
'http://apple.com/ns/ical/:calendar-order',
|
|
);
|
|
$this->DoPROPFINDRequest( $this->first_url_part.$this->calendar_home_set[0], $properties, 1);
|
|
|
|
return $this->parse_calendar_info();
|
|
}
|
|
|
|
/**
|
|
* Do a PROPFIND on a calendar and retrieve its information
|
|
*/
|
|
function GetCalendarDetailsByURL($url) {
|
|
$properties =
|
|
array(
|
|
'resourcetype',
|
|
'displayname',
|
|
'http://calendarserver.org/ns/:getctag',
|
|
'http://apple.com/ns/ical/:calendar-color',
|
|
'http://apple.com/ns/ical/:calendar-order',
|
|
);
|
|
$this->DoPROPFINDRequest($url, $properties, 0);
|
|
|
|
return $this->parse_calendar_info();
|
|
}
|
|
|
|
/**
|
|
* Find the calendars, from the calendar_home_set
|
|
*/
|
|
function GetCalendarDetails( $url = null ) {
|
|
if ( isset($url) ) $this->SetCalendar($url);
|
|
|
|
$calendar_properties = array( 'resourcetype', 'displayname', 'http://calendarserver.org/ns/:getctag', 'urn:ietf:params:xml:ns:caldav:calendar-timezone', 'supported-report-set' );
|
|
$this->DoPROPFINDRequest( $this->calendar_url, $calendar_properties, 0);
|
|
|
|
$hnode = $this->xmltags['DAV::href'][0];
|
|
$href = rawurldecode($this->xmlnodes[$hnode]['value']);
|
|
|
|
$calendar = new CalDAVCalendar($href);
|
|
$ok_props = $this->GetOKProps($hnode);
|
|
foreach( $ok_props AS $k => $v ) {
|
|
$name = preg_replace( '{^.*:}', '', $v['tag'] );
|
|
if ( isset($v['value'] ) ) {
|
|
$calendar->{$name} = $v['value'];
|
|
}
|
|
/* else {
|
|
printf( "Calendar property '%s' has no text content\n", $v['tag'] );
|
|
}*/
|
|
}
|
|
|
|
return $calendar;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get all etags for a calendar
|
|
*/
|
|
function GetCollectionETags( $url = null ) {
|
|
if ( isset($url) ) $this->SetCalendar($url);
|
|
|
|
$this->DoPROPFINDRequest( $this->calendar_url, array('getetag'), 1);
|
|
|
|
$etags = array();
|
|
if ( isset($this->xmltags['DAV::getetag']) ) {
|
|
foreach( $this->xmltags['DAV::getetag'] AS $k => $v ) {
|
|
$href = $this->HrefForProp('DAV::getetag', $k);
|
|
if ( isset($href) && isset($this->xmlnodes[$v]['value']) ) $etags[$href] = $this->xmlnodes[$v]['value'];
|
|
}
|
|
}
|
|
|
|
return $etags;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get a bunch of events for a calendar with a calendar-multiget report
|
|
*/
|
|
function CalendarMultiget( $event_hrefs, $url = null ) {
|
|
|
|
if ( isset($url) ) $this->SetCalendar($url);
|
|
|
|
$hrefs = '';
|
|
foreach( $event_hrefs AS $k => $href ) {
|
|
$href = str_replace( rawurlencode('/'),'/',rawurlencode($href));
|
|
$hrefs .= '<href>'.$href.'</href>';
|
|
}
|
|
$this->body = <<<EOXML
|
|
<?xml version="1.0" encoding="utf-8" ?>
|
|
<C:calendar-multiget xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
|
|
<prop><getetag/><C:calendar-data/></prop>
|
|
$hrefs
|
|
</C:calendar-multiget>
|
|
EOXML;
|
|
|
|
$this->requestMethod = "REPORT";
|
|
$this->SetContentType("text/xml");
|
|
$response = $this->DoRequest( $this->calendar_url );
|
|
|
|
$report = array();
|
|
foreach( $this->xmlnodes as $k => $v ) {
|
|
switch( $v['tag'] ) {
|
|
case 'DAV::response':
|
|
if ( $v['type'] == 'open' ) {
|
|
$response = array();
|
|
}
|
|
elseif ( $v['type'] == 'close' ) {
|
|
$report[] = $response;
|
|
}
|
|
break;
|
|
case 'DAV::href':
|
|
$response['href'] = basename( rawurldecode($v['value']) );
|
|
break;
|
|
case 'DAV::getetag':
|
|
$response['etag'] = preg_replace('/^"?([^"]+)"?/', '$1', $v['value']);
|
|
break;
|
|
case 'urn:ietf:params:xml:ns:caldav:calendar-data':
|
|
$response['data'] = $v['value'];
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $report;
|
|
}
|
|
|
|
|
|
/**
|
|
* Given XML for a calendar query, return an array of the events (/todos) in the
|
|
* response. Each event in the array will have a 'href', 'etag' and '$response_type'
|
|
* part, where the 'href' is relative to the calendar and the '$response_type' contains the
|
|
* definition of the calendar data in iCalendar format.
|
|
*
|
|
* @param string $filter XML fragment which is the <filter> element of a calendar-query
|
|
* @param string $url The URL of the calendar, or null to use the 'current' calendar_url
|
|
*
|
|
* @return array An array of the relative URLs, etags, and events from the server. Each element of the array will
|
|
* be an array with 'href', 'etag' and 'data' elements, corresponding to the URL, the server-supplied
|
|
* etag (which only varies when the data changes) and the calendar data in iCalendar format.
|
|
*/
|
|
function DoCalendarQuery( $filter, $url = null ) {
|
|
|
|
if ( isset($url) ) $this->SetCalendar($url);
|
|
|
|
$this->body = <<<EOXML
|
|
<?xml version="1.0" encoding="utf-8" ?>
|
|
<C:calendar-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
|
|
<D:prop>
|
|
<C:calendar-data/>
|
|
<D:getetag/>
|
|
</D:prop>$filter
|
|
</C:calendar-query>
|
|
EOXML;
|
|
|
|
$this->requestMethod = "REPORT";
|
|
$this->SetContentType("text/xml");
|
|
$this->DoRequest( $this->calendar_url );
|
|
|
|
$report = array();
|
|
foreach( $this->xmlnodes as $k => $v ) {
|
|
switch( $v['tag'] ) {
|
|
case 'DAV::response':
|
|
if ( $v['type'] == 'open' ) {
|
|
$response = array();
|
|
}
|
|
elseif ( $v['type'] == 'close' ) {
|
|
$report[] = $response;
|
|
}
|
|
break;
|
|
case 'DAV::href':
|
|
$response['href'] = basename( rawurldecode($v['value']) );
|
|
break;
|
|
case 'DAV::getetag':
|
|
$response['etag'] = preg_replace('/^"?([^"]+)"?/', '$1', $v['value']);
|
|
break;
|
|
case 'urn:ietf:params:xml:ns:caldav:calendar-data':
|
|
$response['data'] = $v['value'];
|
|
break;
|
|
}
|
|
}
|
|
return $report;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the events in a range from $start to $finish. The dates should be in the
|
|
* format yyyymmddThhmmssZ and should be in GMT. The events are returned as an
|
|
* array of event arrays. Each event array will have a 'href', 'etag' and 'event'
|
|
* part, where the 'href' is relative to the calendar and the event contains the
|
|
* definition of the event in iCalendar format.
|
|
*
|
|
* @param timestamp $start The start time for the period
|
|
* @param timestamp $finish The finish time for the period
|
|
* @param string $relative_url The URL relative to the base_url specified when the calendar was opened. Default null.
|
|
*
|
|
* @return array An array of the relative URLs, etags, and events, returned from DoCalendarQuery() @see DoCalendarQuery()
|
|
*/
|
|
function GetEvents( $start = null, $finish = null, $relative_url = null ) {
|
|
$this->SetDepth('1');
|
|
$filter = "";
|
|
if ( isset($start) && isset($finish) )
|
|
$range = "<C:time-range start=\"$start\" end=\"$finish\"/>";
|
|
elseif ( isset($start) && ! isset($finish) )
|
|
$range = "<C:time-range start=\"$start\"/>";
|
|
elseif ( ! isset($start) && isset($finish) )
|
|
$range = "<C:time-range end=\"$finish\"/>";
|
|
else
|
|
$range = '';
|
|
|
|
$filter = <<<EOFILTER
|
|
<C:filter>
|
|
<C:comp-filter name="VCALENDAR">
|
|
<C:comp-filter name="VEVENT">
|
|
$range
|
|
</C:comp-filter>
|
|
</C:comp-filter>
|
|
</C:filter>
|
|
EOFILTER;
|
|
|
|
return $this->DoCalendarQuery($filter, $relative_url);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the todo's in a range from $start to $finish. The dates should be in the
|
|
* format yyyymmddThhmmssZ and should be in GMT. The events are returned as an
|
|
* array of event arrays. Each event array will have a 'href', 'etag' and 'event'
|
|
* part, where the 'href' is relative to the calendar and the event contains the
|
|
* definition of the event in iCalendar format.
|
|
*
|
|
* @param timestamp $start The start time for the period
|
|
* @param timestamp $finish The finish time for the period
|
|
* @param boolean $completed Whether to include completed tasks
|
|
* @param boolean $cancelled Whether to include cancelled tasks
|
|
* @param string $relative_url The URL relative to the base_url specified when the calendar was opened. Default ''.
|
|
*
|
|
* @return array An array of the relative URLs, etags, and events, returned from DoCalendarQuery() @see DoCalendarQuery()
|
|
*/
|
|
function GetTodos( $start = null, $finish = null, $completed = null, $cancelled = null, $relative_url = "" ) {
|
|
$this->SetDepth('1');
|
|
|
|
if ( isset($start) && isset($finish) )
|
|
$range = "<C:comp-filter name=\"VALARM\"><C:time-range start=\"$start\" end=\"$finish\"/></C:comp-filter>";
|
|
elseif ( isset($start) && ! isset($finish) )
|
|
$range = "<C:comp-filter name=\"VALARM\"><C:time-range start=\"$start\"/></C:comp-filter>";
|
|
elseif ( ! isset($start) && isset($finish) )
|
|
$range = "<C:comp-filter name=\"VALARM\"><C:time-range end=\"$finish\"/></C:comp-filter>";
|
|
else
|
|
$range = '';
|
|
|
|
|
|
// Warning! May contain traces of double negatives...
|
|
if(isset($completed) && $completed == true)
|
|
$completed_filter = '<C:prop-filter name="STATUS"><C:text-match negate-condition="no">COMPLETED</C:text-match></C:prop-filter>';
|
|
else if(isset($completed) && $completed == false)
|
|
$completed_filter = '<C:prop-filter name="STATUS"><C:text-match negate-condition="yes">COMPLETED</C:text-match></C:prop-filter>';
|
|
else
|
|
$completed_filter = '';
|
|
|
|
if(isset($cancelled) && $cancelled == true)
|
|
$cancelled_filter = '<C:prop-filter name="STATUS"><C:text-match negate-condition="no">CANCELLED</C:text-match></C:prop-filter>';
|
|
else if(isset($cancelled) && $cancelled == false)
|
|
$cancelled_filter = '<C:prop-filter name="STATUS"><C:text-match negate-condition="yes">CANCELLED</C:text-match></C:prop-filter>';
|
|
else
|
|
$cancelled_filter = '';
|
|
|
|
$filter = <<<EOFILTER
|
|
<C:filter>
|
|
<C:comp-filter name="VCALENDAR">
|
|
<C:comp-filter name="VTODO">
|
|
$completed_filter
|
|
$cancelled_filter
|
|
$range
|
|
</C:comp-filter>
|
|
</C:comp-filter>
|
|
</C:filter>
|
|
EOFILTER;
|
|
|
|
return $this->DoCalendarQuery($filter);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the calendar entry by UID
|
|
*
|
|
* @param uid
|
|
* @param string $relative_url The URL relative to the base_url specified when the calendar was opened. Default ''.
|
|
*
|
|
* @return array An array of the relative URL, etag, and calendar data returned from DoCalendarQuery() @see DoCalendarQuery()
|
|
*/
|
|
function GetEntryByUid( $uid, $relative_url = null ) {
|
|
$this->SetDepth('1');
|
|
$filter = "";
|
|
if ( $uid ) {
|
|
$filter = <<<EOFILTER
|
|
<C:filter>
|
|
<C:comp-filter name="VCALENDAR">
|
|
<C:comp-filter name="VEVENT">
|
|
<C:prop-filter name="UID">
|
|
<C:text-match icollation="i;octet">$uid</C:text-match>
|
|
</C:prop-filter>
|
|
</C:comp-filter>
|
|
</C:comp-filter>
|
|
</C:filter>
|
|
EOFILTER;
|
|
}
|
|
|
|
return $this->DoCalendarQuery($filter, $relative_url);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the calendar entry by HREF
|
|
*
|
|
* @param string $href The href from a call to GetEvents or GetTodos etc.
|
|
*
|
|
* @return string The iCalendar of the calendar entry
|
|
*/
|
|
function GetEntryByHref( $href ) {
|
|
//$href = str_replace( rawurlencode('/'),'/',rawurlencode($href));
|
|
$response = $this->DoGETRequest( $href );
|
|
|
|
$report = array();
|
|
|
|
if ( $this->GetHttpResultCode() == '404' ) { return $report; }
|
|
|
|
$etag = null;
|
|
if ( preg_match( '{^ETag:\s+"([^"]*)"\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
|
|
else if ( preg_match( '{^ETag:\s+([^\s]*)\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
|
|
if ( !isset($etag) || $etag == '' ) {
|
|
// Try with HEAD
|
|
$save_request = $this->httpRequest;
|
|
$save_response_headers = $this->httpResponseHeaders;
|
|
$save_http_result = $this->httpResultCode;
|
|
$this->DoHEADRequest( $href );
|
|
if ( preg_match( '{^Etag:\s+"([^"]*)"\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
|
|
else if ( preg_match( '{^ETag:\s+([^\s]*)\s*$}im', $this->httpResponseHeaders, $matches ) ) $etag = $matches[1];
|
|
|
|
/*
|
|
if ( !isset($etag) || $etag == '' ) {
|
|
printf( "Still No etag in:\n%s\n", $this->httpResponseHeaders );
|
|
}
|
|
*/
|
|
$this->httpRequest = $save_request;
|
|
$this->httpResponseHeaders = $save_response_headers;
|
|
$this->httpResultCode = $save_http_result;
|
|
}
|
|
|
|
$report = array(array('etag'=>$etag));
|
|
|
|
return $report;
|
|
}
|
|
|
|
/**
|
|
* Get calendar info after a PROPFIND
|
|
*/
|
|
function parse_calendar_info() {
|
|
$calendars = array();
|
|
if ( isset($this->xmltags['urn:ietf:params:xml:ns:caldav:calendar']) ) {
|
|
$calendar_urls = array();
|
|
foreach( $this->xmltags['urn:ietf:params:xml:ns:caldav:calendar'] AS $k => $v ) {
|
|
$calendar_urls[$this->HrefForProp('urn:ietf:params:xml:ns:caldav:calendar', $k)] = 1;
|
|
}
|
|
|
|
foreach( $this->xmltags['DAV::href'] AS $i => $hnode ) {
|
|
$href = rawurldecode($this->xmlnodes[$hnode]['value']);
|
|
|
|
if ( !isset($calendar_urls[$href]) ) continue;
|
|
|
|
// printf("Seems '%s' is a calendar.\n", $href );
|
|
|
|
|
|
$calendar = new CalDAVCalendar($href);
|
|
|
|
/*
|
|
* Transform href into calendar
|
|
* /xxxxx/yyyyy/caldav.php/principal/resource/
|
|
* t-3 t-2
|
|
*/
|
|
$pieces = preg_split('/\//', $href);
|
|
$total = count($pieces);
|
|
$calendar_id = $pieces[$total-2];
|
|
$calendar->setCalendarID($calendar_id);
|
|
|
|
$ok_props = $this->GetOKProps($hnode);
|
|
foreach( $ok_props AS $v ) {
|
|
switch( $v['tag'] ) {
|
|
case 'http://calendarserver.org/ns/:getctag':
|
|
$calendar->setCtag((isset($v['value']) ?
|
|
$v['value'] : '-'));
|
|
break;
|
|
case 'DAV::displayname':
|
|
$calendar->setDisplayName((isset($v['value']) ?
|
|
$v['value'] : '-'));
|
|
break;
|
|
case 'http://apple.com/ns/ical/:calendar-color':
|
|
$calendar->setRBGcolor((isset($v['value']) ?
|
|
$this->_rgba2rgb($v['value']) : '-'));
|
|
break;
|
|
case 'http://apple.com/ns/ical/:calendar-order':
|
|
$calendar->setOrder((isset($v['value']) ?
|
|
$v['value'] : '-'));
|
|
break;
|
|
}
|
|
}
|
|
$calendars[$calendar->getCalendarID()] = $calendar;
|
|
}
|
|
}
|
|
|
|
return $calendars;
|
|
}
|
|
/**
|
|
* Issues a PROPPATCH on a resource
|
|
*
|
|
* @param string XML request
|
|
* @param string URL
|
|
* @return TRUE on success, FALSE otherwise
|
|
*/
|
|
function DoPROPPATCH($xml_text, $url) {
|
|
$this->DoXMLRequest('PROPPATCH', $xml_text, $url);
|
|
|
|
$errmsg = '';
|
|
|
|
if ($this->httpResultCode == '207') {
|
|
$errmsg = $this->httpResultCode;
|
|
// Find propstat tag(s)
|
|
if (isset($this->xmltags['DAV::propstat'])) {
|
|
foreach ($this->xmltags['DAV::propstat'] as $i => $node) {
|
|
if ($this->xmlnodes[$node]['type'] == 'close') {
|
|
continue;
|
|
}
|
|
// propstat @ $i: open
|
|
// propstat @ $i + 1: close
|
|
// Search for prop and status
|
|
$level = $this->xmlnodes[$node]['level'];
|
|
$level++;
|
|
|
|
while ($this->xmlnodes[++$node]['level'] >= $level) {
|
|
if ($this->xmlnodes[$node]['tag'] == 'DAV::status'
|
|
&& $this->xmlnodes[$node]['value'] !=
|
|
'HTTP/1.1 200 OK') {
|
|
return $this->xmlnodes[$node]['value'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if ($this->httpResultCode != 200) {
|
|
return 'Unknown HTTP code';
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Queries server using a principal-property search
|
|
*
|
|
* @param string XML request
|
|
* @param string URL
|
|
* @return FALSE on error, array with results otherwise
|
|
*/
|
|
function principal_property_search($xml_text, $url) {
|
|
$result = array();
|
|
$this->DoXMLRequest('REPORT', $xml_text, $url);
|
|
|
|
if ($this->httpResultCode == '207') {
|
|
$errmsg = $this->httpResultCode;
|
|
// Find response tag(s)
|
|
if (isset($this->xmltags['DAV::response'])) {
|
|
foreach ($this->xmltags['DAV::response'] as $i => $node) {
|
|
if ($this->xmlnodes[$node]['type'] == 'close') {
|
|
continue;
|
|
}
|
|
|
|
$result[$i]['href'] =
|
|
$this->HrefForProp('DAV::response', $i+1);
|
|
|
|
$level = $this->xmlnodes[$node]['level'];
|
|
$level++;
|
|
|
|
$ok_props = $this->GetOKProps($node);
|
|
|
|
foreach ($ok_props as $v) {
|
|
switch($v['tag']) {
|
|
case 'DAV::displayname':
|
|
$result[$i]['displayname'] =
|
|
isset($v['value']) ? $v['value'] : '';
|
|
break;
|
|
case 'DAV::email':
|
|
$result[$i]['email'] =
|
|
isset($v['value']) ? $v['value'] : '';
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
} else if ($this->httpResultCode != 200) {
|
|
return 'Unknown HTTP code';
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Converts a RGBA hexadecimal string (#rrggbbXX) to RGB
|
|
*/
|
|
private function _rgba2rgb($s) {
|
|
if (strlen($s) == '9') {
|
|
return substr($s, 0, 7);
|
|
} else {
|
|
// Unknown string
|
|
return $s;
|
|
}
|
|
}
|
|
|
|
public function printLastMessages() {
|
|
$string = '';
|
|
$dom = new DOMDocument();
|
|
$dom->preserveWhiteSpace = FALSE;
|
|
$dom->formatOutput = TRUE;
|
|
|
|
$string .= '<pre>';
|
|
$string .= 'last request:<br><br>';
|
|
|
|
$string .= $this->httpRequest;
|
|
|
|
if(!empty($this->body)) {
|
|
$dom->loadXML($this->body);
|
|
$string .= htmlentities($dom->saveXml());
|
|
}
|
|
|
|
$string .= '<br>last response:<br><br>';
|
|
|
|
$string .= $this->httpResponse;
|
|
|
|
if(!empty($this->xmlResponse)) {
|
|
$dom->loadXML($this->xmlResponse);
|
|
$string .= htmlentities($dom->saveXml());
|
|
}
|
|
|
|
$string .= '</pre>';
|
|
|
|
echo $string;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Error handeling functions
|
|
*/
|
|
|
|
$debug = TRUE;
|
|
|
|
function log_message ($type, $message) {
|
|
global $debug;
|
|
if ($debug) {
|
|
echo '['.$type.'] '.$message.'\n';
|
|
}
|
|
}
|