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Calendar.controller.php
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Calendar.controller.php
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<?php
/**
* @name ElkArte Forum
* @copyright ElkArte Forum contributors
* @license BSD http://opensource.org/licenses/BSD-3-Clause
*
* This software is a derived product, based on:
*
* Simple Machines Forum (SMF)
* copyright: 2011 Simple Machines (http://www.simplemachines.org)
* license: BSD, See included LICENSE.TXT for terms and conditions.
*
* @version 1.0 Alpha
*
* This file has only one real task, showing the calendar.
* Original module by Aaron O'Neil - aaron@mud-master.com
*/
if (!defined('ELKARTE'))
die('No access...');
class Calendar_Controller
{
/**
* Show the calendar.
* It loads the specified month's events, holidays, and birthdays.
* It requires the calendar_view permission.
* It depends on the cal_enabled setting, and many of the other cal_ settings.
* It uses the calendar_start_day theme option. (Monday/Sunday)
* It uses the main sub template in the Calendar template.
* It goes to the month and year passed in 'month' and 'year' by get or post.
* It is accessed through ?action=calendar.
*/
function action_calendar()
{
global $txt, $context, $modSettings, $scripturl, $options;
// Permissions, permissions, permissions.
isAllowedTo('calendar_view');
// Doing something other than calendar viewing?
$subActions = array(
'ical' => 'action_ical',
'post' => 'action_event_post',
);
if (isset($_GET['sa']) && isset($subActions[$_GET['sa']]))
return $this->{$subActions[$_GET['sa']]}();
// This is gonna be needed...
loadTemplate('Calendar');
// You can't do anything if the calendar is off.
if (empty($modSettings['cal_enabled']))
fatal_lang_error('calendar_off', false);
// Set the page title to mention the calendar ;).
$context['page_title'] = $txt['calendar'];
// Is this a week view?
$context['view_week'] = isset($_GET['viewweek']);
// Don't let search engines index weekly calendar pages.
if ($context['view_week'])
$context['robot_no_index'] = true;
// Get the current day of month...
require_once(SUBSDIR . '/Calendar.subs.php');
$today = getTodayInfo();
// If the month and year are not passed in, use today's date as a starting point.
$curPage = array(
'day' => isset($_REQUEST['day']) ? (int) $_REQUEST['day'] : $today['day'],
'month' => isset($_REQUEST['month']) ? (int) $_REQUEST['month'] : $today['month'],
'year' => isset($_REQUEST['year']) ? (int) $_REQUEST['year'] : $today['year']
);
// Make sure the year and month are in valid ranges.
if ($curPage['month'] < 1 || $curPage['month'] > 12)
fatal_lang_error('invalid_month', false);
if ($curPage['year'] < $modSettings['cal_minyear'] || $curPage['year'] > $modSettings['cal_maxyear'])
fatal_lang_error('invalid_year', false);
// If we have a day clean that too.
if ($context['view_week'])
{
// Note $isValid is -1 < PHP 5.1
$isValid = mktime(0, 0, 0, $curPage['month'], $curPage['day'], $curPage['year']);
if ($curPage['day'] > 31 || !$isValid || $isValid == -1)
fatal_lang_error('invalid_day', false);
}
// Load all the context information needed to show the calendar grid.
$calendarOptions = array(
'start_day' => !empty($options['calendar_start_day']) ? $options['calendar_start_day'] : 0,
'show_birthdays' => in_array($modSettings['cal_showbdays'], array(1, 2)),
'show_events' => in_array($modSettings['cal_showevents'], array(1, 2)),
'show_holidays' => in_array($modSettings['cal_showholidays'], array(1, 2)),
'show_week_num' => true,
'short_day_titles' => false,
'show_next_prev' => true,
'show_week_links' => true,
'size' => 'large',
);
// Load up the main view.
if ($context['view_week'])
$context['calendar_grid_main'] = getCalendarWeek($curPage['month'], $curPage['year'], $curPage['day'], $calendarOptions);
else
$context['calendar_grid_main'] = getCalendarGrid($curPage['month'], $curPage['year'], $calendarOptions);
// Load up the previous and next months.
$calendarOptions['show_birthdays'] = $calendarOptions['show_events'] = $calendarOptions['show_holidays'] = false;
$calendarOptions['short_day_titles'] = true;
$calendarOptions['show_next_prev'] = false;
$calendarOptions['show_week_links'] = false;
$calendarOptions['size'] = 'small';
$context['calendar_grid_current'] = getCalendarGrid($curPage['month'], $curPage['year'], $calendarOptions);
// Only show previous month if it isn't pre-January of the min-year
if ($context['calendar_grid_current']['previous_calendar']['year'] > $modSettings['cal_minyear'] || $curPage['month'] != 1)
$context['calendar_grid_prev'] = getCalendarGrid($context['calendar_grid_current']['previous_calendar']['month'], $context['calendar_grid_current']['previous_calendar']['year'], $calendarOptions);
// Only show next month if it isn't post-December of the max-year
if ($context['calendar_grid_current']['next_calendar']['year'] < $modSettings['cal_maxyear'] || $curPage['month'] != 12)
$context['calendar_grid_next'] = getCalendarGrid($context['calendar_grid_current']['next_calendar']['month'], $context['calendar_grid_current']['next_calendar']['year'], $calendarOptions);
// Basic template stuff.
$context['can_post'] = allowedTo('calendar_post');
$context['current_day'] = $curPage['day'];
$context['current_month'] = $curPage['month'];
$context['current_year'] = $curPage['year'];
$context['show_all_birthdays'] = isset($_GET['showbd']);
// Set the page title to mention the month or week, too
$context['page_title'] .= ' - ' . ($context['view_week'] ? sprintf($txt['calendar_week_title'], $context['calendar_grid_main']['week_number'], ($context['calendar_grid_main']['week_number'] == 53 ? $context['current_year'] - 1 : $context['current_year'])) : $txt['months'][$context['current_month']] . ' ' . $context['current_year']);
// Load up the linktree!
$context['linktree'][] = array(
'url' => $scripturl . '?action=calendar',
'name' => $txt['calendar']
);
// Add the current month to the linktree.
$context['linktree'][] = array(
'url' => $scripturl . '?action=calendar;year=' . $context['current_year'] . ';month=' . $context['current_month'],
'name' => $txt['months'][$context['current_month']] . ' ' . $context['current_year']
);
// If applicable, add the current week to the linktree.
if ($context['view_week'])
$context['linktree'][] = array(
'url' => $scripturl . '?action=calendar;viewweek;year=' . $context['current_year'] . ';month=' . $context['current_month'] . ';day=' . $context['current_day'],
'name' => $txt['calendar_week'] . ' ' . $context['calendar_grid_main']['week_number']
);
// Build the calendar button array.
$context['calendar_buttons'] = array(
'post_event' => array('test' => 'can_post', 'text' => 'calendar_post_event', 'image' => 'calendarpe.png', 'lang' => true, 'url' => $scripturl . '?action=calendar;sa=post;month=' . $context['current_month'] . ';year=' . $context['current_year'] . ';' . $context['session_var'] . '=' . $context['session_id']),
);
// Allow mods to add additional buttons here
call_integration_hook('integrate_calendar_buttons');
}
/**
* This function processes posting/editing/deleting a calendar event.
*
* - calls action_post() function if event is linked to a post.
* - calls insertEvent() to insert the event if not linked to post.
*
* It requires the calendar_post permission to use.
* It uses the event_post sub template in the Calendar template.
* It is accessed with ?action=calendar;sa=post.
*/
function action_event_post()
{
global $context, $txt, $user_info, $scripturl;
global $modSettings, $topic, $smcFunc;
// Well - can they?
isAllowedTo('calendar_post');
// We need this for all kinds of useful functions.
require_once(SUBSDIR . '/Calendar.subs.php');
// Cast this for safety...
if (isset($_REQUEST['eventid']))
$_REQUEST['eventid'] = (int) $_REQUEST['eventid'];
// Submitting?
if (isset($_POST[$context['session_var']], $_REQUEST['eventid']))
{
checkSession();
// Validate the post...
if (!isset($_POST['link_to_board']))
validateEventPost();
// If you're not allowed to edit any events, you have to be the poster.
if ($_REQUEST['eventid'] > 0 && !allowedTo('calendar_edit_any'))
isAllowedTo('calendar_edit_' . (!empty($user_info['id']) && getEventPoster($_REQUEST['eventid']) == $user_info['id'] ? 'own' : 'any'));
// New - and directing?
if ($_REQUEST['eventid'] == -1 && isset($_POST['link_to_board']))
{
$_REQUEST['calendar'] = 1;
require_once(CONTROLLERDIR . '/Post.controller.php');
$controller = new Post_Controller();
return $controller->action_post();
}
// New...
elseif ($_REQUEST['eventid'] == -1)
{
$eventOptions = array(
'board' => 0,
'topic' => 0,
'title' => $smcFunc['substr']($_REQUEST['evtitle'], 0, 100),
'member' => $user_info['id'],
'start_date' => sprintf('%04d-%02d-%02d', $_POST['year'], $_POST['month'], $_POST['day']),
'span' => isset($_POST['span']) && $_POST['span'] > 0 ? min((int) $modSettings['cal_maxspan'], (int) $_POST['span'] - 1) : 0,
);
insertEvent($eventOptions);
}
// Deleting...
elseif (isset($_REQUEST['deleteevent']))
removeEvent($_REQUEST['eventid']);
// ... or just update it?
else
{
// There could be already a topic you are not allowed to modify
if (!allowedTo('post_new') && empty($modSettings['disableNoPostingCalendarEdits']))
{
$request = $smcFunc['db_query']('', '
SELECT id_board, id_topic
FROM {db_prefix}calendar
WHERE id_event = {int:id_event}
LIMIT 1',
array(
'id_event' => $_REQUEST['eventid'],
));
list ($id_board, $id_topic) = $smcFunc['db_fetch_row']($request);
$smcFunc['db_free_result']($request);
}
$eventOptions = array(
'title' => $smcFunc['substr']($_REQUEST['evtitle'], 0, 100),
'span' => empty($modSettings['cal_allowspan']) || empty($_POST['span']) || $_POST['span'] == 1 || empty($modSettings['cal_maxspan']) || $_POST['span'] > $modSettings['cal_maxspan'] ? 0 : min((int) $modSettings['cal_maxspan'], (int) $_POST['span'] - 1),
'start_date' => strftime('%Y-%m-%d', mktime(0, 0, 0, (int) $_REQUEST['month'], (int) $_REQUEST['day'], (int) $_REQUEST['year'])),
'board' => isset($id_board) ? (int) $id_board : 0,
'topic' => isset($id_topic) ? (int) $id_topic : 0,
);
modifyEvent($_REQUEST['eventid'], $eventOptions);
}
// No point hanging around here now...
redirectexit($scripturl . '?action=calendar;month=' . $_POST['month'] . ';year=' . $_POST['year']);
}
// If we are not enabled... we are not enabled.
if (empty($modSettings['cal_allow_unlinked']) && empty($_REQUEST['eventid']))
{
$_REQUEST['calendar'] = 1;
require_once(CONTROLLERDIR . '/Post.controller.php');
$controller = new Post_Controller();
return $controller->action_post();
}
// New?
if (!isset($_REQUEST['eventid']))
{
$today = getdate();
$context['event'] = array(
'boards' => array(),
'board' => 0,
'new' => 1,
'eventid' => -1,
'year' => isset($_REQUEST['year']) ? $_REQUEST['year'] : $today['year'],
'month' => isset($_REQUEST['month']) ? $_REQUEST['month'] : $today['mon'],
'day' => isset($_REQUEST['day']) ? $_REQUEST['day'] : $today['mday'],
'title' => '',
'span' => 1,
);
$context['event']['last_day'] = (int) strftime('%d', mktime(0, 0, 0, $context['event']['month'] == 12 ? 1 : $context['event']['month'] + 1, 0, $context['event']['month'] == 12 ? $context['event']['year'] + 1 : $context['event']['year']));
// Get list of boards that can be posted in.
$boards = boardsAllowedTo('post_new');
if (empty($boards))
fatal_lang_error('cannot_post_new', 'permission');
// Load the list of boards and categories in the context.
require_once(SUBSDIR . '/MessageIndex.subs.php');
$boardListOptions = array(
'included_boards' => in_array(0, $boards) ? null : $boards,
'not_redirection' => true,
'use_permissions' => true,
'selected_board' => $modSettings['cal_defaultboard'],
);
$context += getBoardList($boardListOptions);
}
else
{
$context['event'] = getEventProperties($_REQUEST['eventid']);
if ($context['event'] === false)
fatal_lang_error('no_access', false);
// If it has a board, then they should be editing it within the topic.
if (!empty($context['event']['topic']['id']) && !empty($context['event']['topic']['first_msg']))
{
// We load the board up, for a check on the board access rights...
$topic = $context['event']['topic']['id'];
loadBoard();
}
// Make sure the user is allowed to edit this event.
if ($context['event']['member'] != $user_info['id'])
isAllowedTo('calendar_edit_any');
elseif (!allowedTo('calendar_edit_any'))
isAllowedTo('calendar_edit_own');
}
// Template, sub template, etc.
loadTemplate('Calendar');
$context['sub_template'] = 'event_post';
$context['page_title'] = isset($_REQUEST['eventid']) ? $txt['calendar_edit'] : $txt['calendar_post_event'];
$context['linktree'][] = array(
'name' => $context['page_title'],
);
}
/**
* This function offers up a download of an event in iCal 2.0 format.
*
* follows the conventions in RFC5546 http://tools.ietf.org/html/rfc5546
* sets events as all day events since we don't have hourly events
* will honor and set multi day events
* sets a sequence number if the event has been modified.
* Accessed by action=calendar;sa=ical
*
* @todo .... allow for week or month export files as well?
*/
function action_ical()
{
global $smcFunc, $forum_version, $context, $modSettings, $webmaster_email, $mbname;
// You can't export if the calendar export feature is off.
if (empty($modSettings['cal_export']))
fatal_lang_error('calendar_export_off', false);
// Goes without saying that this is required.
if (!isset($_REQUEST['eventid']))
fatal_lang_error('no_access', false);
// This is kinda wanted.
require_once(SUBSDIR . '/Calendar.subs.php');
// Load up the event in question and check it exists.
$event = getEventProperties($_REQUEST['eventid']);
if ($event === false)
fatal_lang_error('no_access', false);
// Check the title isn't too long - iCal requires some formatting if so.
$title = str_split($event['title'], 30);
foreach ($title as $id => $line)
{
if ($id != 0)
$title[$id] = ' ' . $title[$id];
$title[$id] .= "\n";
}
// Format the dates.
$datestamp = date('Ymd\THis\Z', time());
$datestart = $event['year'] . ($event['month'] < 10 ? '0' . $event['month'] : $event['month']) . ($event['day'] < 10 ? '0' . $event['day'] : $event['day']);
// Do we have a event that spans several days?
if ($event['span'] > 1)
{
$dateend = strtotime($event['year'] . '-' . ($event['month'] < 10 ? '0' . $event['month'] : $event['month']) . '-' . ($event['day'] < 10 ? '0' . $event['day'] : $event['day']));
$dateend += ($event['span'] - 1) * 86400;
$dateend = date('Ymd', $dateend);
}
// This is what we will be sending later
$filecontents = '';
$filecontents .= 'BEGIN:VCALENDAR' . "\n";
$filecontents .= 'METHOD:PUBLISH' . "\n";
$filecontents .= 'PRODID:-//ElkarteCommunity//ELKARTE ' . (empty($forum_version) ? 2.0 : strtr($forum_version, array('ELKARTE ' => ''))) . '//EN' . "\n";
$filecontents .= 'VERSION:2.0' . "\n";
$filecontents .= 'BEGIN:VEVENT' . "\n";
$filecontents .= 'ORGANIZER;CN="' . $event['realname'] . '":MAILTO:' . $webmaster_email . "\n";
$filecontents .= 'DTSTAMP:' . $datestamp . "\n";
$filecontents .= 'DTSTART;VALUE=DATE:' . $datestart . "\n";
// more than one day
if ($event['span'] > 1)
$filecontents .= 'DTEND;VALUE=DATE:' . $dateend . "\n";
// event has changed? advance the sequence for this UID
if ($event['sequence'] > 0)
$filecontents .= 'SEQUENCE:' . $event['sequence'] . "\n";
$filecontents .= 'SUMMARY:' . implode('', $title);
$filecontents .= 'UID:' . $event['eventid'] . '@' . str_replace(' ', '-', $mbname) . "\n";
$filecontents .= 'END:VEVENT' . "\n";
$filecontents .= 'END:VCALENDAR';
// Send some standard headers.
ob_end_clean();
if (!empty($modSettings['enableCompressedOutput']))
@ob_start('ob_gzhandler');
else
ob_start();
// Send the file headers
header('Pragma: ');
header('Cache-Control: no-cache');
if (!isBrowser('gecko'))
header('Content-Transfer-Encoding: binary');
header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 525600 * 60) . ' GMT');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', time()) . 'GMT');
header('Accept-Ranges: bytes');
header('Connection: close');
header('Content-Disposition: attachment; filename="' . $event['title'] . '.ics"');
if (empty($modSettings['enableCompressedOutput']))
header('Content-Length: ' . $smcFunc['strlen']($filecontents));
// This is a calendar item!
header('Content-Type: text/calendar');
// Chuck out the card.
echo $filecontents;
// Off we pop - lovely!
obExit(false);
}
}