friendica/mod/photo.php
Andrej Stieben db949bb802 Updated modules to allow for partial overrides without errors
Only define functions if they have not been defined before, e.g. in themes. This makes it possible to override parts of a module and still use the other functions.
2016-02-05 21:52:39 +01:00

213 lines
4.9 KiB
PHP

<?php
require_once('include/security.php');
require_once('include/Photo.php');
if(! function_exists('photo_init')) {
function photo_init(&$a) {
global $_SERVER;
$prvcachecontrol = false;
$file = "";
switch($a->argc) {
case 4:
$person = $a->argv[3];
$customres = intval($a->argv[2]);
$type = $a->argv[1];
break;
case 3:
$person = $a->argv[2];
$type = $a->argv[1];
break;
case 2:
$photo = $a->argv[1];
$file = $photo;
break;
case 1:
default:
killme();
// NOTREACHED
}
// strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime($localFileName)) {
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
header('HTTP/1.1 304 Not Modified');
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: '.$_SERVER['HTTP_IF_NONE_MATCH']);
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
if(function_exists('header_remove')) {
header_remove('Last-Modified');
header_remove('Expires');
header_remove('Cache-Control');
}
exit;
}
$default = 'images/person-175.jpg';
if(isset($type)) {
/**
* Profile photos
*/
switch($type) {
case 'profile':
case 'custom':
$resolution = 4;
break;
case 'micro':
$resolution = 6;
$default = 'images/person-48.jpg';
break;
case 'avatar':
default:
$resolution = 5;
$default = 'images/person-80.jpg';
break;
}
$uid = str_replace(array('.jpg','.png'),array('',''), $person);
$r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
intval($resolution),
intval($uid)
);
if(count($r)) {
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
}
if(! isset($data)) {
$data = file_get_contents($default);
$mimetype = 'image/jpeg';
}
}
else {
/**
* Other photos
*/
$resolution = 0;
foreach( Photo::supportedTypes() as $m=>$e){
$photo = str_replace(".$e",'',$photo);
}
if(substr($photo,-2,1) == '-') {
$resolution = intval(substr($photo,-1,1));
$photo = substr($photo,0,-2);
}
// check if the photo exists and get the owner of the photo
$r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
dbesc($photo),
intval($resolution)
);
if(count($r)) {
$sql_extra = permissions_sql($r[0]['uid']);
// Now we'll see if we can access the photo
$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` <= %d $sql_extra ORDER BY scale DESC LIMIT 1",
dbesc($photo),
intval($resolution)
);
$public = ($r[0]['allow_cid'] == '') AND ($r[0]['allow_gid'] == '') AND ($r[0]['deny_cid'] == '') AND ($r[0]['deny_gid'] == '');
if(count($r)) {
$resolution = $r[0]['scale'];
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
} else {
// The picure exists. We already checked with the first query.
// obviously, this is not an authorized viev!
$data = file_get_contents('images/nosign.jpg');
$mimetype = 'image/jpeg';
$prvcachecontrol = true;
$public = false;
}
}
}
if(! isset($data)) {
if(isset($resolution)) {
switch($resolution) {
case 4:
$data = file_get_contents('images/person-175.jpg');
$mimetype = 'image/jpeg';
break;
case 5:
$data = file_get_contents('images/person-80.jpg');
$mimetype = 'image/jpeg';
break;
case 6:
$data = file_get_contents('images/person-48.jpg');
$mimetype = 'image/jpeg';
break;
default:
killme();
// NOTREACHED
break;
}
}
}
// Resize only if its not a GIF
if ($mime != "image/gif") {
$ph = new Photo($data, $mimetype);
if($ph->is_valid()) {
if(isset($customres) && $customres > 0 && $customres < 500) {
$ph->scaleImageSquare($customres);
}
$data = $ph->imageString();
$mimetype = $ph->getType();
}
}
if(function_exists('header_remove')) {
header_remove('Pragma');
header_remove('pragma');
}
header("Content-type: ".$mimetype);
if($prvcachecontrol) {
// it is a private photo that they have no permission to view.
// tell the browser not to cache it, in case they authenticate
// and subsequently have permission to see it
header("Cache-Control: no-store, no-cache, must-revalidate");
}
else {
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: "'.md5($data).'"');
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
}
echo $data;
// If the photo is public and there is an existing photo directory store the photo there
if ($public and ($file != "")) {
// If the photo path isn't there, try to create it
$basepath = $a->get_basepath();
if (!is_dir($basepath."/photo"))
if (is_writable($basepath))
mkdir($basepath."/photo");
if (is_dir($basepath."/photo"))
file_put_contents($basepath."/photo/".$file, $data);
}
killme();
// NOTREACHED
}
}