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\Model\Profile;
  32 use Friendica\Model\Storage\ExternalResource;
  33 use Friendica\Model\Storage\SystemResource;
  34 use Friendica\Model\User;
  35 use Friendica\Network\HTTPException;
  36 use Friendica\Object\Image;
  37 use Friendica\Util\Images;
  38 use Friendica\Util\Network;
  39 use Friendica\Util\Proxy;
  40
  41 /**
  42  * Photo Module
  43  */
  44 class Photo extends BaseModule
  45 {
  46         /**
  47          * Module initializer
  48          *
  49          * Fetch a photo or an avatar, in optional size, check for permissions and
  50          * return the image
  51          */
  52         public static function rawContent(array $parameters = [])
  53         {
  54                 $totalstamp = microtime(true);
  55
  56                 if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
  57                         header("HTTP/1.1 304 Not Modified");
  58                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
  59                         if (!empty($_SERVER["HTTP_IF_NONE_MATCH"])) {
  60                                 header("Etag: " . $_SERVER["HTTP_IF_NONE_MATCH"]);
  61                         }
  62                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
  63                         header("Cache-Control: max-age=31536000");
  64                         if (function_exists("header_remove")) {
  65                                 header_remove("Last-Modified");
  66                                 header_remove("Expires");
  67                                 header_remove("Cache-Control");
  68                         }
  69                         exit;
  70                 }
  71
  72                 Profile::addVisitorCookieForHTTPSigner();
  73
  74                 $customsize = 0;
  75                 $square_resize = true;
  76                 $scale = null;
  77                 $stamp = microtime(true);
  78                 // User avatar
  79                 if (!empty($parameters['type'])) {
  80                         if (!empty($parameters['customsize'])) {
  81                                 $customsize = intval($parameters['customsize']);
  82                                 $square_resize = !in_array($parameters['type'], ['media', 'preview']);
  83                         }
  84
  85                         if (!empty($parameters['nickname_ext'])) {
  86                                 if (in_array($parameters['type'], ['contact', 'header'])) {
  87                                         $guid = pathinfo($parameters['nickname_ext'], PATHINFO_FILENAME);
  88                                         $account = DBA::selectFirst('account-user-view', ['id'], ['guid' => $guid], ['order' => ['uid' => true]]);
  89                                         if (empty($account)) {
  90                                                 throw new HTTPException\NotFoundException();
  91                                         }
  92
  93                                         $id = $account['id'];
  94                                 } else {
  95                                         $nickname = pathinfo($parameters['nickname_ext'], PATHINFO_FILENAME);
  96                                         $user = User::getByNickname($nickname, ['uid']);
  97                                         if (empty($user)) {
  98                                                 throw new HTTPException\NotFoundException();
  99                                         }
 100
 101                                         $id = $user['uid'];
 102                                 }
 103                         }
 104
 105                         // User Id Fallback, to remove after version 2021.12
 106                         if (!empty($parameters['uid_ext'])) {
 107                                 $id = intval(pathinfo($parameters['uid_ext'], PATHINFO_FILENAME));
 108                         }
 109
 110                         // Please refactor this for the love of everything that's good
 111                         if (isset($parameters['id'])) {
 112                                 $id = $parameters['id'];
 113                         }
 114
 115                         if (empty($id)) {
 116                                 Logger::notice('No picture id was detected', ['parameters' => $parameters]);
 117                                 throw new HTTPException\NotFoundException(DI::l10n()->t('The Photo is not available.'));
 118                         }
 119
 120                         $photo = self::getPhotoByid($id, $parameters['type'], $customsize ?: Proxy::PIXEL_SMALL);
 121                 } else {
 122                         $photoid = pathinfo($parameters['name'], PATHINFO_FILENAME);
 123                         $scale = 0;
 124                         if (substr($photoid, -2, 1) == "-") {
 125                                 $scale = intval(substr($photoid, -1, 1));
 126                                 $photoid = substr($photoid, 0, -2);
 127                         }
 128                         $photo = MPhoto::getPhoto($photoid, $scale);
 129                         if ($photo === false) {
 130                                 throw new HTTPException\NotFoundException(DI::l10n()->t('The Photo with id %s is not available.', $photoid));
 131                         }
 132                 }
 133
 134                 $fetch = microtime(true) - $stamp;
 135
 136                 if ($photo === false) {
 137                         throw new HTTPException\NotFoundException();
 138                 }
 139
 140                 $cacheable = ($photo["allow_cid"] . $photo["allow_gid"] . $photo["deny_cid"] . $photo["deny_gid"] === "") && (isset($photo["cacheable"]) ? $photo["cacheable"] : true);
 141
 142                 $stamp = microtime(true);
 143
 144                 $imgdata = MPhoto::getImageDataForPhoto($photo);
 145                 if (empty($imgdata)) {
 146                         throw new HTTPException\NotFoundException();
 147                 }
 148
 149                 // The mimetype for an external or system resource can only be known reliably after it had been fetched
 150                 if (in_array($photo['backend-class'], [ExternalResource::NAME, SystemResource::NAME])) {
 151                         $mimetype = Images::getMimeTypeByData($imgdata);
 152                         if (!empty($mimetype)) {
 153                                 $photo['type'] = $mimetype;
 154                         }
 155                 }
 156
 157                 $data = microtime(true) - $stamp;
 158
 159                 if (empty($imgdata)) {
 160                         Logger::warning('Invalid photo', ['id' => $photo['id']]);
 161                         if (in_array($photo['backend-class'], [ExternalResource::NAME])) {
 162                                 $reference = json_decode($photo['backend-ref'], true);
 163                                 $error = DI::l10n()->t('Invalid external resource with url %s.', $reference['url']);
 164                         } else {
 165                                 $error = DI::l10n()->t('Invalid photo with id %s.', $photo['id']);
 166                         }
 167                         throw new HTTPException\InternalServerErrorException($error);
 168                 }
 169
 170                 // if customsize is set and image is not a gif, resize it
 171                 if ($photo['type'] !== "image/gif" && $customsize > 0 && $customsize <= Proxy::PIXEL_THUMB && $square_resize) {
 172                         $img = new Image($imgdata, $photo['type']);
 173                         $img->scaleToSquare($customsize);
 174                         $imgdata = $img->asString();
 175                 } elseif ($photo['type'] !== "image/gif" && $customsize > 0) {
 176                         $img = new Image($imgdata, $photo['type']);
 177                         $img->scaleDown($customsize);
 178                         $imgdata = $img->asString();
 179                 }
 180
 181                 if (function_exists("header_remove")) {
 182                         header_remove("Pragma");
 183                         header_remove("pragma");
 184                 }
 185
 186                 header("Content-type: " . $photo['type']);
 187
 188                 $stamp = microtime(true);
 189                 if (!$cacheable) {
 190                         // it is a private photo that they have no permission to view.
 191                         // tell the browser not to cache it, in case they authenticate
 192                         // and subsequently have permission to see it
 193                         header("Cache-Control: no-store, no-cache, must-revalidate");
 194                 } else {
 195                         $md5 = $photo['hash'] ?: md5($imgdata);
 196                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 197                         header("Etag: \"{$md5}\"");
 198                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 199                         header("Cache-Control: max-age=31536000");
 200                 }
 201                 $checksum = microtime(true) - $stamp;
 202
 203                 $stamp = microtime(true);
 204                 echo $imgdata;
 205                 $output = microtime(true) - $stamp;
 206
 207                 $total = microtime(true) - $totalstamp;
 208                 $rest = $total - ($fetch + $data + $checksum + $output);
 209
 210                 if (!is_null($scale) && ($scale < 4)) {
 211                         Logger::info('Performance:', ['scale' => $scale, 'resource' => $photo['resource-id'],
 212                                 'total' => number_format($total, 3), 'fetch' => number_format($fetch, 3),
 213                                 'data' => number_format($data, 3), 'checksum' => number_format($checksum, 3),
 214                                 'output' => number_format($output, 3), 'rest' => number_format($rest, 3)]);
 215                 }
 216
 217                 exit();
 218         }
 219
 220         private static function getPhotoByid(int $id, $type, $customsize)
 221         {
 222                 switch($type) {
 223                         case "preview":
 224                                 $media = DBA::selectFirst('post-media', ['preview', 'url', 'mimetype', 'type', 'uri-id'], ['id' => $id]);
 225                                 if (empty($media)) {
 226                                         return false;
 227                                 }
 228                                 $url = $media['preview'];
 229
 230                                 if (empty($url) && ($media['type'] == Post\Media::IMAGE)) {
 231                                         $url = $media['url'];
 232                                 }
 233
 234                                 if (empty($url)) {
 235                                         return false;
 236                                 }
 237
 238                                 if (Network::isLocalLink($url) && preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $url, $matches)) {
 239                                         return MPhoto::getPhoto($matches[1], $matches[2]);
 240                                 }
 241
 242                                 return MPhoto::createPhotoForExternalResource($url, (int)local_user(), $media['mimetype']);
 243                         case "media":
 244                                 $media = DBA::selectFirst('post-media', ['url', 'mimetype', 'uri-id'], ['id' => $id, 'type' => Post\Media::IMAGE]);
 245                                 if (empty($media)) {
 246                                         return false;
 247                                 }
 248
 249                                 if (Network::isLocalLink($media['url']) && preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'], $matches)) {
 250                                         return MPhoto::getPhoto($matches[1], $matches[2]);
 251                                 }
 252
 253                                 return MPhoto::createPhotoForExternalResource($media['url'], (int)local_user(), $media['mimetype']);
 254                         case "link":
 255                                 $link = DBA::selectFirst('post-link', ['url', 'mimetype'], ['id' => $id]);
 256                                 if (empty($link)) {
 257                                         return false;
 258                                 }
 259
 260                                 return MPhoto::createPhotoForExternalResource($link['url'], (int)local_user(), $link['mimetype']);
 261                         case "contact":
 262                                 $contact = Contact::getById($id, ['uid', 'url', 'avatar', 'photo', 'xmpp', 'addr']);
 263                                 if (empty($contact)) {
 264                                         return false;
 265                                 }
 266                                 If (($contact['uid'] != 0) && empty($contact['photo']) && empty($contact['avatar'])) {
 267                                         $contact = Contact::getByURL($contact['url'], false, ['avatar', 'photo', 'xmpp', 'addr']);
 268                                 }
 269                                 if (!empty($contact['photo']) && !empty($contact['avatar'])) {
 270                                         // Fetch photo directly
 271                                         $resourceid = MPhoto::ridFromURI($contact['photo']);
 272                                         if (!empty($resourceid)) {
 273                                                 $photo = MPhoto::selectFirst([], ['resource-id' => $resourceid], ['order' => ['scale']]);
 274                                                 if (!empty($photo)) {
 275                                                         return $photo;
 276                                                 }
 277                                         }
 278                                         // We continue with the avatar link when the photo link is invalid
 279                                         $url = $contact['avatar'];
 280                                 } elseif (!empty($contact['avatar'])) {
 281                                         $url = $contact['avatar'];
 282                                 } elseif ($customsize <= Proxy::PIXEL_MICRO) {
 283                                         $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
 284                                 } elseif ($customsize <= Proxy::PIXEL_THUMB) {
 285                                         $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 286                                 } else {
 287                                         $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
 288                                 }
 289                                 return MPhoto::createPhotoForExternalResource($url);
 290                         case "header":
 291                                 $contact = Contact::getById($id, ['uid', 'url', 'header']);
 292                                 if (empty($contact)) {
 293                                         return false;
 294                                 }
 295                                 If (($contact['uid'] != 0) && empty($contact['header'])) {
 296                                         $contact = Contact::getByURL($contact['url'], false, ['header']);
 297                                 }
 298                                 if (!empty($contact['header'])) {
 299                                         $url = $contact['header'];
 300                                 } else {
 301                                         $url = DI::baseUrl() . '/images/blank.png';
 302                                 }
 303                                 return MPhoto::createPhotoForExternalResource($url);
 304                         case "profile":
 305                         case "custom":
 306                                 $scale = 4;
 307                                 break;
 308                         case "micro":
 309                                 $scale = 6;
 310                                 break;
 311                         case "avatar":
 312                         default:
 313                                 $scale = 5;
 314                 }
 315
 316                 $photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $id, "profile" => 1]);
 317                 if (empty($photo)) {
 318                         $contact = DBA::selectFirst('contact', [], ['uid' => $id, 'self' => true]) ?: [];
 319
 320                         switch($type) {
 321                                 case "profile":
 322                                 case "custom":
 323                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
 324                                         break;
 325                                 case "micro":
 326                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
 327                                         break;
 328                                 case "avatar":
 329                                 default:
 330                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 331                         }
 332
 333                         $parts = parse_url($default);
 334                         if (!empty($parts['scheme']) || !empty($parts['host'])) {
 335                                 $photo = MPhoto::createPhotoForExternalResource($default);
 336                         } else {
 337                                 $photo = MPhoto::createPhotoForSystemResource($default);
 338                         }
 339                 }
 340                 return $photo;
 341         }
 342 }