src/Module/Photo.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Module;
  23
  24 use Friendica\BaseModule;
  25 use Friendica\Core\Logger;
  26 use Friendica\Database\DBA;
  27 use Friendica\DI;
  28 use Friendica\Model\Contact;
  29 use Friendica\Model\Photo as MPhoto;
  30 use Friendica\Model\Post;
  31 use Friendica\Util\Proxy;
  32 use Friendica\Object\Image;
  33
  34 /**
  35  * Photo Module
  36  */
  37 class Photo extends BaseModule
  38 {
  39         /**
  40          * Module initializer
  41          *
  42          * Fetch a photo or an avatar, in optional size, check for permissions and
  43          * return the image
  44          */
  45         public static function rawContent(array $parameters = [])
  46         {
  47                 $totalstamp = microtime(true);
  48
  49                 if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
  50                         header("HTTP/1.1 304 Not Modified");
  51                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
  52                         if (!empty($_SERVER["HTTP_IF_NONE_MATCH"])) {
  53                                 header("Etag: " . $_SERVER["HTTP_IF_NONE_MATCH"]);
  54                         }
  55                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
  56                         header("Cache-Control: max-age=31536000");
  57                         if (function_exists("header_remove")) {
  58                                 header_remove("Last-Modified");
  59                                 header_remove("Expires");
  60                                 header_remove("Cache-Control");
  61                         }
  62                         exit;
  63                 }
  64
  65                 $customsize = 0;
  66                 $photo = false;
  67                 $scale = null;
  68                 $stamp = microtime(true);
  69                 if (!empty($parameters['customsize'])) {
  70                         $customsize = intval($parameters['customsize']);
  71                         $uid = MPhoto::stripExtension($parameters['name']);
  72                         $photo = self::getAvatar($uid, $parameters['type'], $customsize);
  73                 } elseif (!empty($parameters['type'])) {
  74                         $uid = MPhoto::stripExtension($parameters['name']);
  75                         $photo = self::getAvatar($uid, $parameters['type'], Proxy::PIXEL_SMALL);
  76                 } elseif (!empty($parameters['name'])) {
  77                         $photoid = MPhoto::stripExtension($parameters['name']);
  78                         $scale = 0;
  79                         if (substr($photoid, -2, 1) == "-") {
  80                                 $scale = intval(substr($photoid, -1, 1));
  81                                 $photoid = substr($photoid, 0, -2);
  82                         }
  83                         $photo = MPhoto::getPhoto($photoid, $scale);
  84                         if ($photo === false) {
  85                                 throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('The Photo with id %s is not available.', $photoid));
  86                         }
  87                 } else {
  88                         throw new \Friendica\Network\HTTPException\BadRequestException();
  89                 }
  90                 $fetch = microtime(true) - $stamp;
  91
  92                 if ($photo === false) {
  93                         throw new \Friendica\Network\HTTPException\NotFoundException();
  94                 }
  95
  96                 $cacheable = ($photo["allow_cid"] . $photo["allow_gid"] . $photo["deny_cid"] . $photo["deny_gid"] === "") && (isset($photo["cacheable"]) ? $photo["cacheable"] : true);
  97
  98                 $stamp = microtime(true);
  99                 $imgdata = MPhoto::getImageDataForPhoto($photo);
 100                 $data = microtime(true) - $stamp;
 101
 102                 if (empty($imgdata)) {
 103                         Logger::warning("Invalid photo with id {$photo["id"]}.");
 104                         throw new \Friendica\Network\HTTPException\InternalServerErrorException(DI::l10n()->t('Invalid photo with id %s.', $photo["id"]));
 105                 }
 106
 107                 // if customsize is set and image is not a gif, resize it
 108                 if ($photo['type'] !== "image/gif" && $customsize > 0 && $customsize < 501) {
 109                         $img = new Image($imgdata, $photo['type']);
 110                         $img->scaleToSquare($customsize);
 111                         $imgdata = $img->asString();
 112                 }
 113
 114                 if (function_exists("header_remove")) {
 115                         header_remove("Pragma");
 116                         header_remove("pragma");
 117                 }
 118
 119                 header("Content-type: " . $photo['type']);
 120
 121                 $stamp = microtime(true);
 122                 if (!$cacheable) {
 123                         // it is a private photo that they have no permission to view.
 124                         // tell the browser not to cache it, in case they authenticate
 125                         // and subsequently have permission to see it
 126                         header("Cache-Control: no-store, no-cache, must-revalidate");
 127                 } else {
 128                         $md5 = $photo['hash'] ?: md5($imgdata);
 129                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 130                         header("Etag: \"{$md5}\"");
 131                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 132                         header("Cache-Control: max-age=31536000");
 133                 }
 134                 $checksum = microtime(true) - $stamp;
 135
 136                 $stamp = microtime(true);
 137                 echo $imgdata;
 138                 $output = microtime(true) - $stamp;
 139
 140                 $total = microtime(true) - $totalstamp;
 141                 $rest = $total - ($fetch + $data + $checksum + $output);
 142
 143                 if (!is_null($scale) && ($scale < 4)) {
 144                         Logger::info('Performance:', ['scale' => $scale, 'resource' => $photo['resource-id'],
 145                                 'total' => number_format($total, 3), 'fetch' => number_format($fetch, 3),
 146                                 'data' => number_format($data, 3), 'checksum' => number_format($checksum, 3),
 147                                 'output' => number_format($output, 3), 'rest' => number_format($rest, 3)]);
 148                 }
 149
 150                 exit();
 151         }
 152
 153         private static function getAvatar($uid, $type="avatar", $customsize)
 154         {
 155                 switch($type) {
 156                         case "preview":
 157                                 $media = DBA::selectFirst('post-media', ['preview', 'url', 'type', 'uri-id'], ['id' => $uid]);
 158                                 if (empty($media)) {
 159                                         return false;
 160                                 }
 161                                 $url = $media['preview'];
 162
 163                                 if (empty($url) && ($media['type'] == Post\Media::IMAGE)) {
 164                                         $url = $media['url'];
 165                                 }
 166
 167                                 if (empty($url)) {
 168                                         return false;
 169                                 }
 170
 171                                 $author = Contact::selectFirst([], ["`id` IN (SELECT `author-id` FROM `post` WHERE `uri-id` = ?)", $media['uri-id']]);
 172                                 $url = Contact::magicLinkByContact($author, $url);
 173
 174                                 return MPhoto::createPhotoForExternalResource($url);
 175                         case "media":
 176                                 $media = DBA::selectFirst('post-media', ['url'], ['id' => $uid, 'type' => Post\Media::IMAGE]);
 177                                 if (empty($media['url'])) {
 178                                         return false;
 179                                 }
 180
 181                                 $author = Contact::selectFirst([], ["`id` IN (SELECT `author-id` FROM `post` WHERE `uri-id` = ?)", $media['uri-id']]);
 182                                 $url = Contact::magicLinkByContact($author, $media['url']);
 183
 184                                 return MPhoto::createPhotoForExternalResource($url);
 185                         case "contact":
 186                                 $contact = Contact::getById($uid, ['uid', 'url', 'avatar', 'photo', 'xmpp', 'addr']);
 187                                 if (empty($contact)) {
 188                                         return false;
 189                                 }
 190                                 If (($contact['uid'] != 0) && empty($contact['photo']) && empty($contact['avatar'])) {
 191                                         $contact = Contact::getByURL($contact['url'], false, ['avatar', 'photo', 'xmpp', 'addr']);
 192                                 }
 193                                 if (!empty($contact['photo'])) {
 194                                         $url = $contact['photo'];
 195                                 } elseif (!empty($contact['avatar'])) {
 196                                         $url = $contact['avatar'];
 197                                 } elseif ($customsize <= Proxy::PIXEL_MICRO) {
 198                                         $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
 199                                 } elseif ($customsize <= Proxy::PIXEL_THUMB) {
 200                                         $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 201                                 } else {
 202                                         $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
 203                                 }
 204                                 return MPhoto::createPhotoForExternalResource($url);
 205                         case "header":
 206                                 $contact = Contact::getById($uid, ['uid', 'url', 'header']);
 207                                 if (empty($contact)) {
 208                                         return false;
 209                                 }
 210                                 If (($contact['uid'] != 0) && empty($contact['header'])) {
 211                                         $contact = Contact::getByURL($contact['url'], false, ['header']);
 212                                 }
 213                                 if (!empty($contact['header'])) {
 214                                         $url = $contact['header'];
 215                                 } else {
 216                                         $url = DI::baseUrl() . '/images/blank.png';
 217                                 }
 218                                 return MPhoto::createPhotoForExternalResource($url);
 219                         case "profile":
 220                         case "custom":
 221                                 $scale = 4;
 222                                 break;
 223                         case "micro":
 224                                 $scale = 6;
 225                                 break;
 226                         case "avatar":
 227                         default:
 228                                 $scale = 5;
 229                 }
 230
 231                 $photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $uid, "profile" => 1]);
 232                 if (empty($photo)) {
 233                         $contact = DBA::selectFirst('contact', [], ['uid' => $uid, 'self' => true]) ?: [];
 234
 235                         switch($type) {
 236                                 case "profile":
 237                                 case "custom":
 238                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
 239                                         break;
 240                                 case "micro":
 241                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
 242                                         break;
 243                                 case "avatar":
 244                                 default:
 245                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 246                         }
 247
 248                         $parts = parse_url($default);
 249                         if (!empty($parts['scheme']) || !empty($parts['host'])) {
 250                                 $photo = MPhoto::createPhotoForExternalResource($default);
 251                         } else {
 252                                 $photo = MPhoto::createPhotoForSystemResource($default);
 253                         }
 254                 }
 255                 return $photo;
 256         }
 257 }