src/Module/Photo.php

   1 <?php
   2 /**
   3  * @file src/Module/Photo.php
   4  */
   5
   6 namespace Friendica\Module;
   7
   8 use Friendica\BaseModule;
   9 use Friendica\Core\L10n;
  10 use Friendica\Core\Logger;
  11 use Friendica\Core\System;
  12 use Friendica\DI;
  13 use Friendica\Model\Photo as MPhoto;
  14 use Friendica\Object\Image;
  15
  16 /**
  17  * @brief Photo Module
  18  */
  19 class Photo extends BaseModule
  20 {
  21         /**
  22          * @brief Module initializer
  23          *
  24          * Fetch a photo or an avatar, in optional size, check for permissions and
  25          * return the image
  26          */
  27         public static function init(array $parameters = [])
  28         {
  29                 $a = DI::app();
  30                 // @TODO: Replace with parameter from router
  31                 if ($a->argc <= 1 || $a->argc > 4) {
  32                         throw new \Friendica\Network\HTTPException\BadRequestException();
  33                 }
  34
  35                 if (isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
  36                         header("HTTP/1.1 304 Not Modified");
  37                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
  38                         if (!empty($_SERVER["HTTP_IF_NONE_MATCH"])) {
  39                                 header("Etag: " . $_SERVER["HTTP_IF_NONE_MATCH"]);
  40                         }
  41                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
  42                         header("Cache-Control: max-age=31536000");
  43                         if (function_exists("header_remove")) {
  44                                 header_remove("Last-Modified");
  45                                 header_remove("Expires");
  46                                 header_remove("Cache-Control");
  47                         }
  48                         exit;
  49                 }
  50
  51                 $customsize = 0;
  52                 $photo = false;
  53                 // @TODO: Replace with parameter from router
  54                 switch($a->argc) {
  55                         case 4:
  56                                 $customsize = intval($a->argv[2]);
  57                                 $uid = MPhoto::stripExtension($a->argv[3]);
  58                                 $photo = self::getAvatar($uid, $a->argv[1]);
  59                                 break;
  60                         case 3:
  61                                 $uid = MPhoto::stripExtension($a->argv[2]);
  62                                 $photo = self::getAvatar($uid, $a->argv[1]);
  63                                 break;
  64                         case 2:
  65                                 $photoid = MPhoto::stripExtension($a->argv[1]);
  66                                 $scale = 0;
  67                                 if (substr($photoid, -2, 1) == "-") {
  68                                         $scale = intval(substr($photoid, -1, 1));
  69                                         $photoid = substr($photoid, 0, -2);
  70                                 }
  71                                 $photo = MPhoto::getPhoto($photoid, $scale);
  72                                 if ($photo === false) {
  73                                         $photo = MPhoto::createPhotoForSystemResource("images/nosign.jpg");
  74                                 }
  75                                 break;
  76                 }
  77
  78                 if ($photo === false) {
  79                         System::httpExit('404', 'Not Found');
  80                 }
  81
  82                 $cacheable = ($photo["allow_cid"] . $photo["allow_gid"] . $photo["deny_cid"] . $photo["deny_gid"] === "") && (isset($photo["cacheable"]) ? $photo["cacheable"] : true);
  83
  84                 $img = MPhoto::getImageForPhoto($photo);
  85
  86                 if (is_null($img) || !$img->isValid()) {
  87                         Logger::log("Invalid photo with id {$photo["id"]}.");
  88                         throw new \Friendica\Network\HTTPException\InternalServerErrorException(L10n::t('Invalid photo with id %s.', $photo["id"]));
  89                 }
  90
  91                 // if customsize is set and image is not a gif, resize it
  92                 if ($img->getType() !== "image/gif" && $customsize > 0 && $customsize < 501) {
  93                         $img->scaleToSquare($customsize);
  94                 }
  95
  96                 if (function_exists("header_remove")) {
  97                         header_remove("Pragma");
  98                         header_remove("pragma");
  99                 }
 100
 101                 header("Content-type: " . $img->getType());
 102
 103                 if (!$cacheable) {
 104                         // it is a private photo that they have no permission to view.
 105                         // tell the browser not to cache it, in case they authenticate
 106                         // and subsequently have permission to see it
 107                         header("Cache-Control: no-store, no-cache, must-revalidate");
 108                 } else {
 109                         $md5 = md5($img->asString());
 110                         header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 111                         header("Etag: \"{$md5}\"");
 112                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 113                         header("Cache-Control: max-age=31536000");
 114                 }
 115
 116                 echo $img->asString();
 117
 118                 exit();
 119         }
 120
 121         private static function getAvatar($uid, $type="avatar")
 122         {
 123
 124                 switch($type) {
 125                 case "profile":
 126                 case "custom":
 127                         $scale = 4;
 128                         $default = "images/person-300.jpg";
 129                         break;
 130                 case "micro":
 131                         $scale = 6;
 132                         $default = "images/person-48.jpg";
 133                         break;
 134                 case "avatar":
 135                 default:
 136                         $scale = 5;
 137                         $default = "images/person-80.jpg";
 138                 }
 139
 140                 $photo = MPhoto::selectFirst([], ["scale" => $scale, "uid" => $uid, "profile" => 1]);
 141                 if ($photo === false) {
 142                         $photo = MPhoto::createPhotoForSystemResource($default);
 143                 }
 144                 return $photo;
 145         }
 146
 147 }