modules/iCals/HTTP_WebDAV_Server_iCal.php

   1 <?php
   2 if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
   3 /*********************************************************************************
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   6  *
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   8  * the terms of the GNU Affero General Public License version 3 as published by the
   9  * Free Software Foundation with the addition of the following permission added
  10  * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
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  36  ********************************************************************************/
  37
  38
  39
  40 require_once 'modules/Calendar/Calendar.php';
  41 require_once 'modules/iCals/iCal.php';
  42 require_once 'modules/vCals/HTTP_WebDAV_Server_vCal.php';
  43
  44     /**
  45      * Calendar access using WebDAV
  46      *
  47      * @access public
  48      */
  49     class HTTP_WebDAV_Server_iCal extends HTTP_WebDAV_Server_vCal
  50     {
  51
  52         var $cal_encoding = "";
  53         var $cal_charset = "";
  54         var $http_spec = "";
  55
  56         /**
  57         * Constructor for the WebDAV srver
  58         */
  59         public function __construct()
  60         {
  61            $this->vcal_focus = new iCal();
  62            $this->user_focus = new User();
  63         }
  64
  65         /**
  66          * Serve a webdav request
  67          *
  68          * @access public
  69          * @param  string
  70          */
  71         public function ServeICalRequest($base = false)
  72         {
  73             if (empty($_REQUEST['type'])) {
  74               $_REQUEST['type'] = 'ics';
  75             }
  76
  77             if (empty($_REQUEST['encoding'])) {
  78                 $this->cal_encoding = 'utf-8';
  79             } else {
  80                 $this->cal_encoding = $_REQUEST['encoding'];
  81             }
  82
  83             if (empty($_REQUEST['cal_charset'])) {
  84                 $this->cal_charset = 'utf-8';
  85             } else {
  86                 $this->cal_charset = $_REQUEST['cal_charset'];
  87             }
  88
  89             if (empty($_REQUEST['http_spec'])) {
  90                 $this->http_spec = '1.1';
  91             } else {
  92                 $this->http_spec = $_REQUEST['http_spec'];
  93             }
  94
  95             // check the HTTP auth headers for a user
  96             if (empty($_REQUEST['user_name']) && !empty($_SERVER['PHP_AUTH_USER'])) {
  97               $_REQUEST['user_name'] = $_SERVER['PHP_AUTH_USER'];
  98               $_REQUEST['key'] = $_SERVER['PHP_AUTH_PW'];
  99             }
 100
 101             // if username is still empty, then return 401
 102             if (empty($_REQUEST['user_name']) && empty($_REQUEST['email'])) {
 103                 if ($_REQUEST['type'] == 'ics') {
 104                     $this->http_status("401 not authorized");
 105                     header('WWW-Authenticate: Basic realm="SugarCRM iCal"');
 106                     ob_end_clean();
 107                     echo 'Authorization required';
 108                 } else {
 109                     $this->http_status("404 Not Found");
 110                     ob_end_clean();
 111                 }
 112                 return;
 113             }
 114             parent::ServeRequest();
 115         }
 116
 117
 118         /**
 119         * GET method handler
 120         *
 121         * @param void
 122         * @returns void
 123         */
 124         public function http_GET()
 125         {
 126            if ($this->vcal_type == 'vfb') {
 127              $this->http_status("200 OK");
 128              ob_end_clean();
 129              echo $this->vcal_focus->get_vcal_freebusy($this->user_focus);
 130            } else if ($this->vcal_type == 'ics') {
 131              // DO HTTP AUTHORIZATION for iCal:
 132              if ( empty($this->publish_key ) ||
 133                 $this->publish_key != $this->user_focus->getPreference('calendar_publish_key' )) {
 134                     $this->http_status("401 not authorized");
 135                     header('WWW-Authenticate: Basic realm="SugarCRM iCal"');
 136                     echo 'Authorization required';
 137                     return;
 138              }
 139
 140              $this->http_status("200 OK");
 141              header('Content-Type: text/calendar; charset="' . $this->cal_charset . '"');
 142              $result = mb_convert_encoding(html_entity_decode($this->vcal_focus->getVcalIcal($this->user_focus, $_REQUEST['num_months']), ENT_QUOTES, $this->cal_charset), $this->cal_encoding);
 143                 ob_end_clean();
 144              echo $result;
 145            } else {
 146              $this->http_status("404 Not Found");
 147              ob_end_clean();
 148            }
 149
 150         }
 151
 152         /**
 153          * set HTTP return status and mirror it in a private header
 154          *
 155          * @param  string  status code and message
 156          * @return void
 157          */
 158         public function http_status($status)
 159         {
 160             // simplified success case
 161             if($status === true) {
 162                 $status = "200 OK";
 163             }
 164
 165             // remember status
 166             $this->_http_status = $status;
 167
 168             // generate HTTP status response
 169             header("HTTP/$this->http_spec $status");
 170             header("X-WebDAV-Status: $status", true);
 171         }
 172
 173     }
 174
 175 ?>