158 lines
3.9 KiB
PHP
158 lines
3.9 KiB
PHP
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<?php
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/**
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* @file src/Module/Photo.php
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*/
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namespace Friendica\Module;
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use Friendica\BaseModule;
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use Friendica\Core\Logger;
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use Friendica\Model\Photo as MPhoto;
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use Friendica\Object\Image;
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use Friendica\Util\Security;
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use Friendica\Network\HTTPException\NotFoundException;
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use Friendica\Network\HTTPException\BadRequestException;
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use Friendica\Network\HTTPException\InternalServerErrorException;
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/**
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* @brief Photo Module
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*/
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class Photo extends BaseModule
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{
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/**
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* @brief Module initializer
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*
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* Fetch a photo or an avatar, in optional size, check for permissions and
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* return the image
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*/
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public static function init()
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{
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$a = self::getApp();
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if ($a->argc <= 1 || $a->argc > 4) {
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throw new BadRequestException();
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killme();
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}
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if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
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header('HTTP/1.1 304 Not Modified');
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header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
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if (!empty($_SERVER['HTTP_IF_NONE_MATCH'])) {
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header('Etag: ' . $_SERVER['HTTP_IF_NONE_MATCH']);
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}
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header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
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header("Cache-Control: max-age=31536000");
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if (function_exists('header_remove')) {
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header_remove('Last-Modified');
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header_remove('Expires');
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header_remove('Cache-Control');
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}
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exit;
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}
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$customsize = 0;
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switch($a->argc) {
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case 4:
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$customsize = intval($a->argv[2]);
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$uid = self::stripExtension($a->argv[3]);
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$photo = self::getAvatar($uid, $a->argv[1]);
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break;
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case 3:
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$uid = self::stripExtension($a->argv[2]);
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$photo = self::getAvatar($uid, $a->argv[1]);
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break;
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case 2:
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$photoid = self::stripExtension($a->argv[1]);
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$scale = 0;
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if (substr($photoid, -2, 1) == '-') {
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$scale = intval(substr($photoid, -1, 1));
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$photoid = substr($photoid, 0, -2);
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}
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$photo = MPhoto::getPhoto($photoid, $scale);
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break;
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}
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if ($photo===false) {
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header($_SERVER["SERVER_PROTOCOL"] . " 404 Not Found" , true, 404);
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killme();
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}
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$cacheable = ($photo["allow_cid"].$photo["allow_gid"].$photo["deny_cid"].$photo["deny_gid"] === "") || defaults($photo, "cacheable", false);
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$img = MPhoto::getImageForPhotoId($photo["id"]);
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if (is_null($img) || !$img->isValid()) {
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Logger::log("Invalid photo with id {$photo['id']}.");
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throw new InternalServerErrorException();
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}
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// if customsize is set and image is not a gif, resize it
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if ($img->getType() !== "image/gif" && $customsize > 0 && $customsize < 501) {
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$img->scaleToSquare($customsize);
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}
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if (function_exists('header_remove')) {
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header_remove('Pragma');
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header_remove('pragma');
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}
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header("Content-type: " . $img->getType());
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if (!$cacheable) {
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// it is a private photo that they have no permission to view.
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// tell the browser not to cache it, in case they authenticate
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// and subsequently have permission to see it
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header("Cache-Control: no-store, no-cache, must-revalidate");
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} else {
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header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
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header('Etag: "' . md5($img->asString()) . '"');
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header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
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header("Cache-Control: max-age=31536000");
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}
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echo $img->asString();
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killme();
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}
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private static function stripExtension($name)
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{
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$name = str_replace([".jpg", ".png", ".gif"], ["", "", ""], $name);
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foreach (Image::supportedTypes() AS $m => $e) {
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$name = str_replace('.' . $e, '', $name);
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}
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return $name;
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}
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private static function getAvatar($uid, $type="avatar")
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{
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switch($type) {
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case "profile":
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case "custom":
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$scale = 4;
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$default = "images/person-300.jpg";
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break;
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case "micro":
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$scale = 6;
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$default = "images/person-48.jpg";
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break;
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case "avatar":
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default:
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$scale = 5;
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$default = "images/person-80.jpg";
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}
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$photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $uid, "profile" => 1]);
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if ($photo===false) {
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// todo default image info
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}
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return $photo;
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}
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}
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