/
thumb.php
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/
thumb.php
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<?php
/**
*
* @package mahara
* @subpackage core
* @author Catalyst IT Ltd
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL version 3 or later
* @copyright For copyright information on Mahara, please see the README file distributed with this software.
*
*/
define('INTERNAL', 1);
define('PUBLIC', 1);
define('NOCHECKREQUIREDFIELDS', 1);
require('init.php');
require_once('file.php');
require_once('user.php');
require_once('layoutpreviewimage.php');
$type = param_alpha('type');
switch ($type) {
case 'profileiconbyid':
case 'profileicon':
$id = param_integer('id', 0);
$size = get_imagesize_parameters();
$earlyexpiry = param_boolean('earlyexpiry');
$useremail = null;
if ($id) {
if ($type == 'profileicon') {
// Convert ID of user to the ID of a profileicon
$data = get_record_sql('
SELECT u.profileicon, u.email, f.filetype
FROM {usr} u LEFT JOIN {artefact_file_files} f ON u.profileicon = f.artefact
WHERE u.id = ?', array($id));
if (!empty($data->profileicon)) {
$id = $data->profileicon;
$mimetype = $data->filetype;
}
else {
$useremail = $data->email;
$id = null;
}
}
else {
$mimetype = get_field('artefact_file_files', 'filetype', 'artefact', $id);
}
}
if ($id && $fileid = get_field('artefact_file_files', 'fileid', 'artefact', $id)) {
if ($path = get_dataroot_image_path('artefact/file/profileicons', $fileid, $size)) {
if ($mimetype) {
header('Content-type: ' . $mimetype);
if (!get_config('nocache')) {
// We can't cache 'profileicon' for as long, because the
// user can change it at any time. But we can cache
// 'profileiconbyid' for quite a while, because it will
// never change
if ($type == 'profileiconbyid' and !$earlyexpiry) {
$maxage = 604800; // 1 week
}
else {
$maxage = 600; // 10 minutes
}
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $maxage) .' GMT');
header('Cache-Control: max-age=' . $maxage);
header('Pragma: public');
}
readfile_exit($path);
}
}
}
// Look for an appropriate image on gravatar.com
if ($useremail and $gravatarurl = remote_avatar_url($useremail, $size)) {
redirect($gravatarurl);
}
// We couldn't find an image for this user. Attempt to use the 'no user
// photo' image for the current theme
if (!get_config('nocache')) {
// We can cache such images
$maxage = 604800; // 1 week
if ($earlyexpiry) {
$maxage = 600; // 10 minutes
}
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $maxage) .' GMT');
header('Cache-Control: max-age=' . $maxage);
header('Pragma: public');
}
if ($path = get_dataroot_image_path('artefact/file/profileicons/no_userphoto/' . $THEME->basename, 0, $size)) {
header('Content-type: ' . 'image/png');
readfile_exit($path);
}
// If we couldn't find the no user photo picture, we put it into
// dataroot if we can
$nouserphotopic = $THEME->get_path('images/no_userphoto.png');
if ($nouserphotopic) {
// Move the file into the correct place.
$directory = get_config('dataroot') . 'artefact/file/profileicons/no_userphoto/' . $THEME->basename . '/originals/0/';
check_dir_exists($directory);
copy($nouserphotopic, $directory . '0');
// Now we can try and get the image in the correct size
if ($path = get_dataroot_image_path('artefact/file/profileicons/no_userphoto/' . $THEME->basename, 0, $size)) {
header('Content-type: ' . 'image/png');
readfile_exit($path);
}
}
// Emergency fallback
header('Content-type: ' . 'image/png');
readfile_exit($THEME->get_path('images/no_userphoto.png'));
case 'logobyid':
$filedata = get_record('artefact_file_files', 'artefact', param_integer('id'));
if ($path = get_dataroot_image_path('artefact/file/profileicons', $filedata->fileid, get_imagesize_parameters())) {
if ($filedata->filetype) {
header('Content-type: ' . $filedata->filetype);
if (!get_config('nocache')) {
$maxage = 604800;
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $maxage) .' GMT');
header('Cache-Control: max-age=' . $maxage);
header('Pragma: public');
}
readfile_exit($path);
}
}
// Nothing found, use the site logo.
header('Content-type: ' . 'image/png');
readfile_exit($THEME->get_path('images/site-logo.png'));
case 'blocktype':
$bt = param_alpha('bt'); // blocktype
$ap = param_alpha('ap', null); // artefact plugin (optional)
$basepath = 'blocktype/' . $bt;
if (!empty($ap)) {
$basepath = 'artefact/' . $ap . '/' . $basepath;
}
header('Content-type: image/png');
if (!get_config('nocache')) {
$maxage = 604800;
header('Expires: '. gmdate('D, d M Y H:i:s', time() + $maxage) .' GMT');
header('Cache-Control: max-age=' . $maxage);
header('Pragma: public');
}
$path = $THEME->get_path('images/thumb.png', false, $basepath);
if (is_readable($path)) {
readfile_exit($path);
}
$path = get_config('docroot') . $basepath . '/thumb.png';
if (is_readable($path)) {
readfile_exit($path);
}
readfile_exit($THEME->get_path('images/no_thumbnail.png'));
case 'viewlayout':
header('Content-type: image/png');
$vl = param_integer('vl');
$rows = get_records_sql_assoc('
SELECT vlrc.row, vlc.widths
FROM {view_layout_rows_columns} vlrc
INNER JOIN {view_layout_columns} vlc ON (vlrc.columns = vlc.id)
WHERE vlrc.viewlayout = ?
ORDER BY vlrc.row ASC',
array($vl));
if ($rows) {
$filename = 'vl-';
foreach ($rows as $key => $row) {
$filename .= str_replace(',', '-', $row->widths);
$filename .= ($key == count($rows))? '.png' : '_';
}
if (($path = get_config('dataroot') . LayoutPreviewImage::$destinationfolder . '/' . $filename)
&& (is_readable($path))) {
readfile_exit($path);
}
// look in theme folder for default layout thumbs, or dataroot folder for custom layout thumbs
else if (($path = $THEME->get_path('images/' . $filename))
&& (is_readable($path))) {
readfile_exit($path);
}
}
readfile_exit($THEME->get_path('images/no_thumbnail.png'));
case 'customviewlayout':
header('Content-type: image/png');
$cvl = param_variable('cvl');
// dataroot folder for custom layout thumbs
if (($path = get_config('dataroot') . LayoutPreviewImage::$destinationfolder . '/' . $cvl . '.png')
&& (is_readable($path))) {
readfile_exit($path);
}
readfile_exit($THEME->get_path('images/no_thumbnail.png'));
}
function readfile_exit($path) {
readfile($path);
perf_to_log();
exit;
}