Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
require_once('include/security.php');
require_once('include/Photo.php');
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);
}
$r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
dbesc($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 $sql_extra LIMIT 1",
dbesc($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)) {
$data = $r[0]['data'];
$mimetype = $r[0]['type'];
}
else {
// Does the picture exist? It may be a remote person with no credentials,
// but who should otherwise be able to view it. Show a default image to let
// them know permissions was denied. It may be possible to view the image
// through an authenticated profile visit.
// There won't be many completely unauthorised people seeing this because
// they won't have the photo link, so there's a reasonable chance that the person
// might be able to obtain permission to view it.
$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
dbesc($photo),
intval($resolution)
);
if(count($r)) {
$data = file_get_contents('images/nosign.jpg');
$mimetype = 'image/jpeg';
$prvcachecontrol = true;
}
}
}
}
if(! isset($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 ($file != "")) {
// If the photo path isn't there, try to create it
if (!is_dir($_SERVER["DOCUMENT_ROOT"]."/photo"))
if (is_writable($_SERVER["DOCUMENT_ROOT"]))
mkdir($_SERVER["DOCUMENT_ROOT"]."/photo");
if (is_dir($_SERVER["DOCUMENT_ROOT"]."/photo"))
file_put_contents($_SERVER["DOCUMENT_ROOT"]."/photo/".$file, $data);
}
killme();
// NOTREACHED
}