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
/**
* @file src/Module/Photo.php
*/
namespace Friendica\Module;
use Friendica\BaseModule;
use Friendica\Core\Logger;
use Friendica\Core\System;
use Friendica\Model\Photo as MPhoto;
use Friendica\Object\Image;
/**
* @brief Photo Module
*/
class Photo extends BaseModule
{
/**
* @brief Module initializer
*
* Fetch a photo or an avatar, in optional size, check for permissions and
* return the image
*/
public static function init()
{
$a = self::getApp();
// @TODO: Replace with parameter from router
if ($a->argc <= 1 || $a->argc > 4) {
System::httpExit(400);
}
if (isset($_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");
if (!empty($_SERVER["HTTP_IF_NONE_MATCH"])) {
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;
}
$customsize = 0;
$photo = false;
// @TODO: Replace with parameter from router
switch($a->argc) {
case 4:
$customsize = intval($a->argv[2]);
$uid = self::stripExtension($a->argv[3]);
$photo = self::getAvatar($uid, $a->argv[1]);
break;
case 3:
$uid = self::stripExtension($a->argv[2]);
$photo = self::getAvatar($uid, $a->argv[1]);
break;
case 2:
$photoid = self::stripExtension($a->argv[1]);
$scale = 0;
if (substr($photoid, -2, 1) == "-") {
$scale = intval(substr($photoid, -1, 1));
$photoid = substr($photoid, 0, -2);
}
$photo = MPhoto::getPhoto($photoid, $scale);
if ($photo === false) {
$photo = MPhoto::createPhotoForSystemResource("images/nosign.jpg");
}
break;
}
if ($photo === false) {
// not using System::httpExit() because we don't want html here.
header($_SERVER["SERVER_PROTOCOL"] . " 404 Not Found" , true, 404);
exit();
}
$cacheable = ($photo["allow_cid"] . $photo["allow_gid"] . $photo["deny_cid"] . $photo["deny_gid"] === "") && (isset($photo["cacheable"]) ? $photo["cacheable"] : true);
$img = MPhoto::getImageForPhoto($photo);
if (is_null($img) || !$img->isValid()) {
Logger::log("Invalid photo with id {$photo["id"]}.");
System::httpExit(500, ["description" => "Invalid photo with id {$photo["id"]}."]);
}
// if customsize is set and image is not a gif, resize it
if ($img->getType() !== "image/gif" && $customsize > 0 && $customsize < 501) {
$img->scaleToSquare($customsize);
}
if (function_exists("header_remove")) {
header_remove("Pragma");
header_remove("pragma");
}
header("Content-type: " . $img->getType());
if (!$cacheable) {
// 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 {
$md5 = md5($img->asString());
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header("Etag: \"{$md5}\"");
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
}
echo $img->asString();
exit();
}
private static function stripExtension($name)
{
$name = str_replace([".jpg", ".png", ".gif"], ["", "", ""], $name);
foreach (Image::supportedTypes() as $m => $e) {
$name = str_replace("." . $e, "", $name);
}
return $name;
}
private static function getAvatar($uid, $type="avatar")
{
switch($type) {
case "profile":
case "custom":
$scale = 4;
$default = "images/person-300.jpg";
break;
case "micro":
$scale = 6;
$default = "images/person-48.jpg";
break;
case "avatar":
default:
$scale = 5;
$default = "images/person-80.jpg";
}
$photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $uid, "profile" => 1]);
if ($photo === false) {
$photo = MPhoto::createPhotoForSystemResource($default);
}
return $photo;
}
}