friendica/src/Module/Photo.php

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<?php
/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
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*/
namespace Friendica\Module;
use Friendica\BaseModule;
use Friendica\Core\Logger;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\Contact;
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use Friendica\Model\Photo as MPhoto;
use Friendica\Model\Post;
use Friendica\Util\Proxy;
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use Friendica\Object\Image;
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/**
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* Photo Module
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*/
class Photo extends BaseModule
{
/**
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* Module initializer
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*
* Fetch a photo or an avatar, in optional size, check for permissions and
* return the image
*/
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public static function rawContent(array $parameters = [])
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{
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$totalstamp = microtime(true);
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if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
header("HTTP/1.1 304 Not Modified");
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header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
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if (!empty($_SERVER["HTTP_IF_NONE_MATCH"])) {
header("Etag: " . $_SERVER["HTTP_IF_NONE_MATCH"]);
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}
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
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if (function_exists("header_remove")) {
header_remove("Last-Modified");
header_remove("Expires");
header_remove("Cache-Control");
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}
exit;
}
$customsize = 0;
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$photo = false;
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$scale = null;
$stamp = microtime(true);
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if (!empty($parameters['customsize'])) {
$customsize = intval($parameters['customsize']);
$uid = MPhoto::stripExtension($parameters['name']);
$photo = self::getAvatar($uid, $parameters['type'], $customsize);
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} elseif (!empty($parameters['type'])) {
$uid = MPhoto::stripExtension($parameters['name']);
$photo = self::getAvatar($uid, $parameters['type'], Proxy::PIXEL_SMALL);
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} elseif (!empty($parameters['name'])) {
$photoid = MPhoto::stripExtension($parameters['name']);
$scale = 0;
if (substr($photoid, -2, 1) == "-") {
$scale = intval(substr($photoid, -1, 1));
$photoid = substr($photoid, 0, -2);
}
$photo = MPhoto::getPhoto($photoid, $scale);
if ($photo === false) {
throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('The Photo with id %s is not available.', $photoid));
}
} else {
throw new \Friendica\Network\HTTPException\BadRequestException();
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}
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$fetch = microtime(true) - $stamp;
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if ($photo === false) {
throw new \Friendica\Network\HTTPException\NotFoundException();
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}
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$cacheable = ($photo["allow_cid"] . $photo["allow_gid"] . $photo["deny_cid"] . $photo["deny_gid"] === "") && (isset($photo["cacheable"]) ? $photo["cacheable"] : true);
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$stamp = microtime(true);
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$imgdata = MPhoto::getImageDataForPhoto($photo);
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$data = microtime(true) - $stamp;
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if (empty($imgdata)) {
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Logger::warning("Invalid photo with id {$photo["id"]}.");
throw new \Friendica\Network\HTTPException\InternalServerErrorException(DI::l10n()->t('Invalid photo with id %s.', $photo["id"]));
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}
// if customsize is set and image is not a gif, resize it
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if ($photo['type'] !== "image/gif" && $customsize > 0 && $customsize < 501) {
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$img = new Image($imgdata, $photo['type']);
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$img->scaleToSquare($customsize);
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$imgdata = $img->asString();
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}
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if (function_exists("header_remove")) {
header_remove("Pragma");
header_remove("pragma");
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}
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header("Content-type: " . $photo['type']);
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$stamp = microtime(true);
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if (!$cacheable) {
// it is a private photo that they have no permission to view.
// tell the browser not to cache it, in case they authenticate
// and subsequently have permission to see it
header("Cache-Control: no-store, no-cache, must-revalidate");
} else {
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$md5 = $photo['hash'] ?: md5($imgdata);
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header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
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header("Etag: \"{$md5}\"");
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header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
}
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$checksum = microtime(true) - $stamp;
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$stamp = microtime(true);
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echo $imgdata;
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$output = microtime(true) - $stamp;
$total = microtime(true) - $totalstamp;
$rest = $total - ($fetch + $data + $checksum + $output);
if (!is_null($scale) && ($scale < 4)) {
Logger::info('Performance:', ['scale' => $scale, 'resource' => $photo['resource-id'],
'total' => number_format($total, 3), 'fetch' => number_format($fetch, 3),
'data' => number_format($data, 3), 'checksum' => number_format($checksum, 3),
'output' => number_format($output, 3), 'rest' => number_format($rest, 3)]);
}
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exit();
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}
private static function getAvatar($uid, $type="avatar", $customsize)
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{
switch($type) {
case "preview":
$media = DBA::selectFirst('post-media', ['preview', 'url', 'type', 'uri-id'], ['id' => $uid]);
if (empty($media)) {
return false;
}
$url = $media['preview'];
if (empty($url) && ($media['type'] == Post\Media::IMAGE)) {
$url = $media['url'];
}
if (empty($url)) {
return false;
}
$author = Contact::selectFirst([], ["`id` IN (SELECT `author-id` FROM `post` WHERE `uri-id` = ?)", $media['uri-id']]);
$url = Contact::magicLinkByContact($author, $url);
return MPhoto::createPhotoForExternalResource($url, local_user());
case "media":
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$media = DBA::selectFirst('post-media', ['url', 'uri-id'], ['id' => $uid, 'type' => Post\Media::IMAGE]);
if (empty($media)) {
return false;
}
$author = Contact::selectFirst([], ["`id` IN (SELECT `author-id` FROM `post` WHERE `uri-id` = ?)", $media['uri-id']]);
$url = Contact::magicLinkByContact($author, $media['url']);
return MPhoto::createPhotoForExternalResource($url, local_user());
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case "contact":
$contact = Contact::getById($uid, ['uid', 'url', 'avatar', 'photo', 'xmpp', 'addr']);
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if (empty($contact)) {
return false;
}
If (($contact['uid'] != 0) && empty($contact['photo']) && empty($contact['avatar'])) {
$contact = Contact::getByURL($contact['url'], false, ['avatar', 'photo', 'xmpp', 'addr']);
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}
if (!empty($contact['photo'])) {
$url = $contact['photo'];
} elseif (!empty($contact['avatar'])) {
$url = $contact['avatar'];
} elseif ($customsize <= Proxy::PIXEL_MICRO) {
$url = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
} elseif ($customsize <= Proxy::PIXEL_THUMB) {
$url = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
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} else {
$url = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
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}
return MPhoto::createPhotoForExternalResource($url, local_user());
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case "header":
$contact = Contact::getById($uid, ['uid', 'url', 'header']);
if (empty($contact)) {
return false;
}
If (($contact['uid'] != 0) && empty($contact['header'])) {
$contact = Contact::getByURL($contact['url'], false, ['header']);
}
if (!empty($contact['header'])) {
$url = $contact['header'];
} else {
$url = DI::baseUrl() . '/images/blank.png';
}
return MPhoto::createPhotoForExternalResource($url, local_user());
case "profile":
case "custom":
$scale = 4;
break;
case "micro":
$scale = 6;
break;
case "avatar":
default:
$scale = 5;
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}
$photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $uid, "profile" => 1]);
if (empty($photo)) {
$contact = DBA::selectFirst('contact', [], ['uid' => $uid, 'self' => true]) ?: [];
switch($type) {
case "profile":
case "custom":
$default = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
break;
case "micro":
$default = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
break;
case "avatar":
default:
$default = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
}
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$parts = parse_url($default);
if (!empty($parts['scheme']) || !empty($parts['host'])) {
$photo = MPhoto::createPhotoForExternalResource($default, local_user());
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} else {
$photo = MPhoto::createPhotoForSystemResource($default);
}
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}
return $photo;
}
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}