src/Module/Photo.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, 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\Core\Storage\Type\ExternalResource;
  33 use Friendica\Core\Storage\Type\SystemResource;
  34 use Friendica\Model\User;
  35 use Friendica\Network\HTTPException;
  36 use Friendica\Network\HTTPException\NotModifiedException;
  37 use Friendica\Object\Image;
  38 use Friendica\Util\Images;
  39 use Friendica\Util\Network;
  40 use Friendica\Util\ParseUrl;
  41 use Friendica\Util\Proxy;
  42
  43 /**
  44  * Photo Module
  45  */
  46 class Photo extends BaseModule
  47 {
  48         /**
  49          * Module initializer
  50          *
  51          * Fetch a photo or an avatar, in optional size, check for permissions and
  52          * return the image
  53          */
  54         protected function rawContent(array $request = [])
  55         {
  56                 $totalstamp = microtime(true);
  57
  58                 if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
  59                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
  60                         if (!empty($_SERVER["HTTP_IF_NONE_MATCH"])) {
  61                                 header("Etag: " . $_SERVER["HTTP_IF_NONE_MATCH"]);
  62                         }
  63                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
  64                         header("Cache-Control: max-age=31536000");
  65                         if (function_exists("header_remove")) {
  66                                 header_remove("Last-Modified");
  67                                 header_remove("Expires");
  68                                 header_remove("Cache-Control");
  69                         }
  70                         throw new NotModifiedException();
  71                 }
  72
  73                 Profile::addVisitorCookieForHTTPSigner();
  74
  75                 $customsize = 0;
  76                 $square_resize = true;
  77                 $scale = null;
  78                 $stamp = microtime(true);
  79                 // User avatar
  80                 if (!empty($this->parameters['type'])) {
  81                         if (!empty($this->parameters['customsize'])) {
  82                                 $customsize = intval($this->parameters['customsize']);
  83                                 $square_resize = !in_array($this->parameters['type'], ['media', 'preview']);
  84                         }
  85
  86                         if (!empty($this->parameters['guid'])) {
  87                                 $guid = $this->parameters['guid'];
  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 = $account['id'];
  94                         }
  95
  96                         // Contact Id Fallback, to remove after version 2021.12
  97                         if (isset($this->parameters['contact_id'])) {
  98                                 $id = intval($this->parameters['contact_id']);
  99                         }
 100
 101                         if (!empty($this->parameters['nickname_ext'])) {
 102                                 $nickname = pathinfo($this->parameters['nickname_ext'], PATHINFO_FILENAME);
 103                                 $user = User::getByNickname($nickname, ['uid']);
 104                                 if (empty($user)) {
 105                                         throw new HTTPException\NotFoundException();
 106                                 }
 107
 108                                 $id = $user['uid'];
 109                         }
 110
 111                         // User Id Fallback, to remove after version 2021.12
 112                         if (!empty($this->parameters['uid_ext'])) {
 113                                 $id = intval(pathinfo($this->parameters['uid_ext'], PATHINFO_FILENAME));
 114                         }
 115
 116                         // Please refactor this for the love of everything that's good
 117                         if (isset($this->parameters['id'])) {
 118                                 $id = $this->parameters['id'];
 119                         }
 120
 121                         if (empty($id)) {
 122                                 Logger::notice('No picture id was detected', ['parameters' => $this->parameters, 'query' => DI::args()->getQueryString()]);
 123                                 throw new HTTPException\NotFoundException(DI::l10n()->t('The Photo is not available.'));
 124                         }
 125
 126                         $photo = self::getPhotoByid($id, $this->parameters['type'], $customsize ?: Proxy::PIXEL_SMALL);
 127                 } else {
 128                         $photoid = pathinfo($this->parameters['name'], PATHINFO_FILENAME);
 129                         $scale = 0;
 130                         if (substr($photoid, -2, 1) == "-") {
 131                                 $scale = intval(substr($photoid, -1, 1));
 132                                 $photoid = substr($photoid, 0, -2);
 133                         }
 134                         $photo = MPhoto::getPhoto($photoid, $scale);
 135                         if ($photo === false) {
 136                                 throw new HTTPException\NotFoundException(DI::l10n()->t('The Photo with id %s is not available.', $photoid));
 137                         }
 138                 }
 139
 140                 $fetch = microtime(true) - $stamp;
 141
 142                 if ($photo === false) {
 143                         throw new HTTPException\NotFoundException();
 144                 }
 145
 146                 $cacheable = ($photo["allow_cid"] . $photo["allow_gid"] . $photo["deny_cid"] . $photo["deny_gid"] === "") && (isset($photo["cacheable"]) ? $photo["cacheable"] : true);
 147
 148                 $stamp = microtime(true);
 149
 150                 $imgdata = MPhoto::getImageDataForPhoto($photo);
 151                 if (empty($imgdata)) {
 152                         throw new HTTPException\NotFoundException();
 153                 }
 154
 155                 // The mimetype for an external or system resource can only be known reliably after it had been fetched
 156                 if (in_array($photo['backend-class'], [ExternalResource::NAME, SystemResource::NAME])) {
 157                         $mimetype = Images::getMimeTypeByData($imgdata);
 158                         if (!empty($mimetype)) {
 159                                 $photo['type'] = $mimetype;
 160                         }
 161                 }
 162
 163                 $data = microtime(true) - $stamp;
 164
 165                 if (empty($imgdata)) {
 166                         Logger::warning('Invalid photo', ['id' => $photo['id']]);
 167                         if (in_array($photo['backend-class'], [ExternalResource::NAME])) {
 168                                 $reference = json_decode($photo['backend-ref'], true);
 169                                 $error = DI::l10n()->t('Invalid external resource with url %s.', $reference['url']);
 170                         } else {
 171                                 $error = DI::l10n()->t('Invalid photo with id %s.', $photo['id']);
 172                         }
 173                         throw new HTTPException\InternalServerErrorException($error);
 174                 }
 175
 176                 // if customsize is set and image is not a gif, resize it
 177                 if ($photo['type'] !== "image/gif" && $customsize > 0 && $customsize <= Proxy::PIXEL_THUMB && $square_resize) {
 178                         $img = new Image($imgdata, $photo['type']);
 179                         $img->scaleToSquare($customsize);
 180                         $imgdata = $img->asString();
 181                 } elseif ($photo['type'] !== "image/gif" && $customsize > 0) {
 182                         $img = new Image($imgdata, $photo['type']);
 183                         $img->scaleDown($customsize);
 184                         $imgdata = $img->asString();
 185                 }
 186
 187                 if (function_exists("header_remove")) {
 188                         header_remove("Pragma");
 189                         header_remove("pragma");
 190                 }
 191
 192                 header("Content-type: " . $photo['type']);
 193
 194                 $stamp = microtime(true);
 195                 if (!$cacheable) {
 196                         // it is a private photo that they have no permission to view.
 197                         // tell the browser not to cache it, in case they authenticate
 198                         // and subsequently have permission to see it
 199                         header("Cache-Control: no-store, no-cache, must-revalidate");
 200                 } else {
 201                         $md5 = $photo['hash'] ?: md5($imgdata);
 202                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 203                         header("Etag: \"{$md5}\"");
 204                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 205                         header("Cache-Control: max-age=31536000");
 206                 }
 207                 $checksum = microtime(true) - $stamp;
 208
 209                 $stamp = microtime(true);
 210                 echo $imgdata;
 211                 $output = microtime(true) - $stamp;
 212
 213                 $total = microtime(true) - $totalstamp;
 214                 $rest = $total - ($fetch + $data + $checksum + $output);
 215
 216                 if (!is_null($scale) && ($scale < 4)) {
 217                         Logger::info('Performance:', ['scale' => $scale, 'resource' => $photo['resource-id'],
 218                                 'total' => number_format($total, 3), 'fetch' => number_format($fetch, 3),
 219                                 'data' => number_format($data, 3), 'checksum' => number_format($checksum, 3),
 220                                 'output' => number_format($output, 3), 'rest' => number_format($rest, 3)]);
 221                 }
 222
 223                 exit();
 224         }
 225
 226         private static function getPhotoByid(int $id, $type, $customsize)
 227         {
 228                 switch($type) {
 229                         case "preview":
 230                                 $media = DBA::selectFirst('post-media', ['preview', 'url', 'mimetype', 'type', 'uri-id'], ['id' => $id]);
 231                                 if (empty($media)) {
 232                                         return false;
 233                                 }
 234                                 $url = $media['preview'];
 235
 236                                 if (empty($url) && ($media['type'] == Post\Media::IMAGE)) {
 237                                         $url = $media['url'];
 238                                 }
 239
 240                                 if (empty($url)) {
 241                                         return false;
 242                                 }
 243
 244                                 if (Network::isLocalLink($url) && preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $url, $matches)) {
 245                                         return MPhoto::getPhoto($matches[1], $matches[2]);
 246                                 }
 247
 248                                 return MPhoto::createPhotoForExternalResource($url, (int)local_user(), $media['mimetype']);
 249                         case "media":
 250                                 $media = DBA::selectFirst('post-media', ['url', 'mimetype', 'uri-id'], ['id' => $id, 'type' => Post\Media::IMAGE]);
 251                                 if (empty($media)) {
 252                                         return false;
 253                                 }
 254
 255                                 if (Network::isLocalLink($media['url']) && preg_match('|.*?/photo/(.*[a-fA-F0-9])\-(.*[0-9])\..*[\w]|', $media['url'], $matches)) {
 256                                         return MPhoto::getPhoto($matches[1], $matches[2]);
 257                                 }
 258
 259                                 return MPhoto::createPhotoForExternalResource($media['url'], (int)local_user(), $media['mimetype']);
 260                         case "link":
 261                                 $link = DBA::selectFirst('post-link', ['url', 'mimetype'], ['id' => $id]);
 262                                 if (empty($link)) {
 263                                         return false;
 264                                 }
 265
 266                                 return MPhoto::createPhotoForExternalResource($link['url'], (int)local_user(), $link['mimetype']);
 267                         case "contact":
 268                                 $contact = Contact::getById($id, ['uid', 'url', 'avatar', 'photo', 'xmpp', 'addr']);
 269                                 if (empty($contact)) {
 270                                         return false;
 271                                 }
 272                                 If (($contact['uid'] != 0) && empty($contact['photo']) && empty($contact['avatar'])) {
 273                                         $contact = Contact::getByURL($contact['url'], false, ['avatar', 'photo', 'xmpp', 'addr']);
 274                                 }
 275                                 if (!empty($contact['photo']) && !empty($contact['avatar'])) {
 276                                         // Fetch photo directly
 277                                         $resourceid = MPhoto::ridFromURI($contact['photo']);
 278                                         if (!empty($resourceid)) {
 279                                                 $photo = MPhoto::selectFirst([], ['resource-id' => $resourceid], ['order' => ['scale']]);
 280                                                 if (!empty($photo)) {
 281                                                         return $photo;
 282                                                 }
 283                                         }
 284                                         // We continue with the avatar link when the photo link is invalid
 285                                         $url = $contact['avatar'];
 286                                 } elseif (!empty($contact['avatar'])) {
 287                                         $url = $contact['avatar'];
 288                                 }
 289                                 $mimetext = '';
 290                                 if (!empty($url)) {
 291                                         $mime = ParseUrl::getContentType($url);
 292                                         if (!empty($mime)) {
 293                                                 $mimetext = $mime[0] . '/' . $mime[1];
 294                                         } else {
 295                                                 Logger::info('Invalid file', ['url' => $url]);
 296                                         }
 297                                         if (!empty($mimetext) && ($mime[0] != 'image') && ($mimetext != 'application/octet-stream')) {
 298                                                 Logger::info('Unexpected Content-Type', ['mime' => $mimetext, 'url' => $url]);
 299                                                 $mimetext = '';
 300                                         }
 301                                 }
 302                                 if (empty($mimetext)) {
 303                                         if ($customsize <= Proxy::PIXEL_MICRO) {
 304                                                 $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
 305                                         } elseif ($customsize <= Proxy::PIXEL_THUMB) {
 306                                                 $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 307                                         } else {
 308                                                 $url = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
 309                                         }
 310                                 }
 311                                 return MPhoto::createPhotoForExternalResource($url, 0, $mimetext);
 312                         case "header":
 313                                 $contact = Contact::getById($id, ['uid', 'url', 'header']);
 314                                 if (empty($contact)) {
 315                                         return false;
 316                                 }
 317                                 If (($contact['uid'] != 0) && empty($contact['header'])) {
 318                                         $contact = Contact::getByURL($contact['url'], false, ['header']);
 319                                 }
 320                                 if (!empty($contact['header'])) {
 321                                         $url = $contact['header'];
 322                                 } else {
 323                                         $url = DI::baseUrl() . '/images/blank.png';
 324                                 }
 325                                 return MPhoto::createPhotoForExternalResource($url);
 326                         case "profile":
 327                         case "custom":
 328                                 $scale = 4;
 329                                 break;
 330                         case "micro":
 331                                 $scale = 6;
 332                                 break;
 333                         case "avatar":
 334                         default:
 335                                 $scale = 5;
 336                 }
 337
 338                 $photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $id, "profile" => 1]);
 339                 if (empty($photo)) {
 340                         $contact = DBA::selectFirst('contact', [], ['uid' => $id, 'self' => true]) ?: [];
 341
 342                         switch($type) {
 343                                 case "profile":
 344                                 case "custom":
 345                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
 346                                         break;
 347                                 case "micro":
 348                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
 349                                         break;
 350                                 case "avatar":
 351                                 default:
 352                                         $default = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 353                         }
 354
 355                         $parts = parse_url($default);
 356                         if (!empty($parts['scheme']) || !empty($parts['host'])) {
 357                                 $photo = MPhoto::createPhotoForExternalResource($default);
 358                         } else {
 359                                 $photo = MPhoto::createPhotoForSystemResource($default);
 360                         }
 361                 }
 362                 return $photo;
 363         }
 364 }