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https://github.com/moodle/moodle.git
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1032966cee
1) No longer assume that the end of the current month in Gregorian will be the end of the month for the calendar type being used. 2) Need to take into account the hours and minutes a calendar type may vary in order to generate timestamps. 3) When generating the previous and next month links start at the beginning of the month, not the current day. 4) Need to convert to Gregorian when creating timestamps during calendar exports.
222 lines
10 KiB
PHP
222 lines
10 KiB
PHP
<?php
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require_once('../config.php');
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//require_once($CFG->dirroot.'/course/lib.php');
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require_once($CFG->dirroot.'/calendar/lib.php');
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require_once($CFG->libdir.'/bennu/bennu.inc.php');
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$userid = optional_param('userid', 0, PARAM_INT);
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$username = optional_param('username', '', PARAM_TEXT);
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$authtoken = required_param('authtoken', PARAM_ALPHANUM);
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$generateurl = optional_param('generateurl', '', PARAM_TEXT);
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if (empty($CFG->enablecalendarexport)) {
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die('no export');
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}
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//Fetch user information
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$checkuserid = !empty($userid) && $user = $DB->get_record('user', array('id' => $userid), 'id,password');
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//allowing for fallback check of old url - MDL-27542
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$checkusername = !empty($username) && $user = $DB->get_record('user', array('username' => $username), 'id,password');
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if (!$checkuserid && !$checkusername) {
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//No such user
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die('Invalid authentication');
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}
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//Check authentication token
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$authuserid = !empty($userid) && $authtoken == sha1($userid . $user->password . $CFG->calendar_exportsalt);
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//allowing for fallback check of old url - MDL-27542
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$authusername = !empty($username) && $authtoken == sha1($username . $user->password . $CFG->calendar_exportsalt);
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if (!$authuserid && !$authusername) {
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die('Invalid authentication');
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}
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// Get the calendar type we are using.
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$calendartype = \core_calendar\type_factory::get_calendar_instance();
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$what = optional_param('preset_what', 'all', PARAM_ALPHA);
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$time = optional_param('preset_time', 'weeknow', PARAM_ALPHA);
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$now = $calendartype->timestamp_to_date_array(time());
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// Let's see if we have sufficient and correct data
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$allowed_what = array('all', 'courses');
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$allowed_time = array('weeknow', 'weeknext', 'monthnow', 'monthnext', 'recentupcoming', 'custom');
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if (!empty($generateurl)) {
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$authtoken = sha1($user->id . $user->password . $CFG->calendar_exportsalt);
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$params = array();
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$params['preset_what'] = $what;
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$params['preset_time'] = $time;
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$params['userid'] = $userid;
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$params['authtoken'] = $authtoken;
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$params['generateurl'] = true;
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$link = new moodle_url('/calendar/export.php', $params);
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redirect($link->out());
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die;
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}
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if(!empty($what) && !empty($time)) {
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if(in_array($what, $allowed_what) && in_array($time, $allowed_time)) {
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$courses = enrol_get_users_courses($user->id, true, 'id, visible, shortname');
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if ($what == 'all') {
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$users = $user->id;
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$groups = array();
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foreach ($courses as $course) {
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$course_groups = groups_get_all_groups($course->id, $user->id);
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$groups = array_merge($groups, array_keys($course_groups));
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}
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if (empty($groups)) {
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$groups = false;
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}
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$courses[SITEID] = new stdClass;
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$courses[SITEID]->shortname = get_string('globalevents', 'calendar');
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} else {
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$users = false;
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$groups = false;
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}
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// Store the number of days in the week.
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$numberofdaysinweek = $calendartype->get_num_weekdays();
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switch($time) {
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case 'weeknow':
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$startweekday = calendar_get_starting_weekday();
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$startmonthday = find_day_in_month($now['mday'] - ($numberofdaysinweek - 1), $startweekday, $now['mon'], $now['year']);
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$startmonth = $now['mon'];
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$startyear = $now['year'];
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if($startmonthday > calendar_days_in_month($startmonth, $startyear)) {
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list($startmonth, $startyear) = calendar_add_month($startmonth, $startyear);
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$startmonthday = find_day_in_month(1, $startweekday, $startmonth, $startyear);
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}
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$gregoriandate = $calendartype->convert_to_gregorian($startyear, $startmonth, $startmonthday);
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$timestart = make_timestamp($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
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$gregoriandate['hour'], $gregoriandate['minute']);
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$endmonthday = $startmonthday + $numberofdaysinweek;
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$endmonth = $startmonth;
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$endyear = $startyear;
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if($endmonthday > calendar_days_in_month($endmonth, $endyear)) {
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list($endmonth, $endyear) = calendar_add_month($endmonth, $endyear);
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$endmonthday = find_day_in_month(1, $startweekday, $endmonth, $endyear);
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}
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$gregoriandate = $calendartype->convert_to_gregorian($endyear, $endmonth, $endmonthday);
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$timeend = make_timestamp($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
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$gregoriandate['hour'], $gregoriandate['minute']);
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break;
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case 'weeknext':
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$startweekday = calendar_get_starting_weekday();
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$startmonthday = find_day_in_month($now['mday'] + 1, $startweekday, $now['mon'], $now['year']);
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$startmonth = $now['mon'];
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$startyear = $now['year'];
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if($startmonthday > calendar_days_in_month($startmonth, $startyear)) {
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list($startmonth, $startyear) = calendar_add_month($startmonth, $startyear);
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$startmonthday = find_day_in_month(1, $startweekday, $startmonth, $startyear);
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}
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$gregoriandate = $calendartype->convert_to_gregorian($startyear, $startmonth, $startmonthday);
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$timestart = make_timestamp($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
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$gregoriandate['hour'], $gregoriandate['minute']);
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$endmonthday = $startmonthday + $numberofdaysinweek;
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$endmonth = $startmonth;
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$endyear = $startyear;
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if($endmonthday > calendar_days_in_month($endmonth, $endyear)) {
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list($endmonth, $endyear) = calendar_add_month($endmonth, $endyear);
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$endmonthday = find_day_in_month(1, $startweekday, $endmonth, $endyear);
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}
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$gregoriandate = $calendartype->convert_to_gregorian($endyear, $endmonth, $endmonthday);
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$timeend = make_timestamp($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
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$gregoriandate['hour'], $gregoriandate['minute']);
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break;
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case 'monthnow':
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// Convert to gregorian.
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$gregoriandate = $calendartype->convert_to_gregorian($now['year'], $now['mon'], 1);
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$timestart = make_timestamp($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
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$gregoriandate['hour'], $gregoriandate['minute']);
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$timeend = $timestart + (calendar_days_in_month($now['mon'], $now['year']) * DAYSECS);
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break;
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case 'monthnext':
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// Get the next month for this calendar.
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list($nextmonth, $nextyear) = calendar_add_month($now['mon'], $now['year']);
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// Convert to gregorian.
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$gregoriandate = $calendartype->convert_to_gregorian($nextyear, $nextmonth, 1);
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// Create the timestamps.
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$timestart = make_timestamp($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
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$gregoriandate['hour'], $gregoriandate['minute']);
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$timeend = $timestart + (calendar_days_in_month($nextmonth, $nextyear) * DAYSECS);
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break;
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case 'recentupcoming':
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//Events in the last 5 or next 60 days
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$timestart = time() - 432000;
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$timeend = time() + 5184000;
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break;
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case 'custom':
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// Events based on custom date range.
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$timestart = time() - $CFG->calendar_exportlookback * DAYSECS;
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$timeend = time() + $CFG->calendar_exportlookahead * DAYSECS;
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break;
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}
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}
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else {
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// Parameters given but incorrect, redirect back to export page
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redirect($CFG->wwwroot.'/calendar/export.php');
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die();
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}
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}
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$events = calendar_get_events($timestart, $timeend, $users, $groups, array_keys($courses), false);
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$ical = new iCalendar;
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$ical->add_property('method', 'PUBLISH');
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foreach($events as $event) {
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if (!empty($event->modulename)) {
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$cm = get_coursemodule_from_instance($event->modulename, $event->instance);
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if (!groups_course_module_visible($cm)) {
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continue;
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}
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}
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$hostaddress = str_replace('http://', '', $CFG->wwwroot);
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$hostaddress = str_replace('https://', '', $hostaddress);
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$ev = new iCalendar_event;
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$ev->add_property('uid', $event->id.'@'.$hostaddress);
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$ev->add_property('summary', $event->name);
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$ev->add_property('description', clean_param($event->description, PARAM_NOTAGS));
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$ev->add_property('class', 'PUBLIC'); // PUBLIC / PRIVATE / CONFIDENTIAL
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$ev->add_property('last-modified', Bennu::timestamp_to_datetime($event->timemodified));
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$ev->add_property('dtstamp', Bennu::timestamp_to_datetime()); // now
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$ev->add_property('dtstart', Bennu::timestamp_to_datetime($event->timestart)); // when event starts
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if ($event->timeduration > 0) {
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//dtend is better than duration, because it works in Microsoft Outlook and works better in Korganizer
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$ev->add_property('dtend', Bennu::timestamp_to_datetime($event->timestart + $event->timeduration));
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}
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if ($event->courseid != 0) {
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$coursecontext = context_course::instance($event->courseid);
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$ev->add_property('categories', format_string($courses[$event->courseid]->shortname, true, array('context' => $coursecontext)));
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}
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$ical->add_component($ev);
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}
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$serialized = $ical->serialize();
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if(empty($serialized)) {
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// TODO
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die('bad serialization');
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}
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$filename = 'icalexport.ics';
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header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
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header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0');
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header('Expires: '. gmdate('D, d M Y H:i:s', 0) .'GMT');
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header('Pragma: no-cache');
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header('Accept-Ranges: none'); // Comment out if PDFs do not work...
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header('Content-disposition: attachment; filename='.$filename);
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header('Content-length: '.strlen($serialized));
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header('Content-type: text/calendar; charset=utf-8');
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echo $serialized;
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