mod/photo.php

   1 <?php
   2 /**
   3  * @file mod/photo.php
   4  */
   5 use Friendica\App;
   6 use Friendica\Database\DBM;
   7 use Friendica\Object\Image;
   8
   9 require_once 'include/security.php';
  10
  11 function photo_init(App $a) {
  12         global $_SERVER;
  13
  14         $prvcachecontrol = false;
  15         $file = "";
  16
  17         switch ($a->argc) {
  18                 case 4:
  19                         $person = $a->argv[3];
  20                         $customres = intval($a->argv[2]);
  21                         $type = $a->argv[1];
  22                         break;
  23                 case 3:
  24                         $person = $a->argv[2];
  25                         $type = $a->argv[1];
  26                         break;
  27                 case 2:
  28                         $photo = $a->argv[1];
  29                         $file = $photo;
  30                         break;
  31                 case 1:
  32                 default:
  33                         killme();
  34                         // NOTREACHED
  35         }
  36
  37         if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
  38                 header('HTTP/1.1 304 Not Modified');
  39                 header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
  40                 header('Etag: '.$_SERVER['HTTP_IF_NONE_MATCH']);
  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         $default = 'images/person-175.jpg';
  52
  53         if (isset($type)) {
  54
  55                 /**
  56                  * Profile photos
  57                  */
  58
  59                 switch ($type) {
  60
  61                         case 'profile':
  62                         case 'custom':
  63                                 $resolution = 4;
  64                                 break;
  65                         case 'micro':
  66                                 $resolution = 6;
  67                                 $default = 'images/person-48.jpg';
  68                                 break;
  69                         case 'avatar':
  70                         default:
  71                                 $resolution = 5;
  72                                 $default = 'images/person-80.jpg';
  73                                 break;
  74                 }
  75
  76                 $uid = str_replace(array('.jpg', '.png', '.gif'), array('', '', ''), $person);
  77
  78                 foreach (Image::supportedTypes() AS $m => $e) {
  79                         $uid = str_replace('.'.$e, '', $uid);
  80                 }
  81
  82                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  83                         intval($resolution),
  84                         intval($uid)
  85                 );
  86                 if (DBM::is_result($r)) {
  87                         $data = $r[0]['data'];
  88                         $mimetype = $r[0]['type'];
  89                 }
  90                 if (empty($data)) {
  91                         $data = file_get_contents($default);
  92                         $mimetype = 'image/jpeg';
  93                 }
  94         } else {
  95
  96                 /**
  97                  * Other photos
  98                  */
  99
 100                 $resolution = 0;
 101                 $photo = str_replace(array('.jpg', '.png', '.gif'), array('', '', ''), $photo);
 102
 103                 foreach (Image::supportedTypes() AS $m => $e) {
 104                         $photo = str_replace('.'.$e, '', $photo);
 105                 }
 106
 107                 if (substr($photo, -2, 1) == '-') {
 108                         $resolution = intval(substr($photo, -1, 1));
 109                         $photo = substr($photo, 0, -2);
 110                 }
 111
 112                 // check if the photo exists and get the owner of the photo
 113                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
 114                         dbesc($photo),
 115                         intval($resolution)
 116                 );
 117                 if (DBM::is_result($r)) {
 118
 119                         $sql_extra = permissions_sql($r[0]['uid']);
 120
 121                         // Now we'll see if we can access the photo
 122
 123                         $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` <= %d $sql_extra ORDER BY scale DESC LIMIT 1",
 124                                 dbesc($photo),
 125                                 intval($resolution)
 126                         );
 127
 128                         $public = (DBM::is_result($r)) && ($r[0]['allow_cid'] == '') && ($r[0]['allow_gid'] == '') && ($r[0]['deny_cid']  == '') && ($r[0]['deny_gid']  == '');
 129
 130                         if (DBM::is_result($r)) {
 131                                 $resolution = $r[0]['scale'];
 132                                 $data = $r[0]['data'];
 133                                 $mimetype = $r[0]['type'];
 134                         } else {
 135                                 // The picure exists. We already checked with the first query.
 136                                 // obviously, this is not an authorized viev!
 137                                 $data = file_get_contents('images/nosign.jpg');
 138                                 $mimetype = 'image/jpeg';
 139                                 $prvcachecontrol = true;
 140                                 $public = false;
 141                         }
 142                 }
 143         }
 144
 145         if (empty($data)) {
 146                 if (isset($resolution)) {
 147                         switch ($resolution) {
 148
 149                                 case 4:
 150                                         $data = file_get_contents('images/person-175.jpg');
 151                                         $mimetype = 'image/jpeg';
 152                                         break;
 153                                 case 5:
 154                                         $data = file_get_contents('images/person-80.jpg');
 155                                         $mimetype = 'image/jpeg';
 156                                         break;
 157                                 case 6:
 158                                         $data = file_get_contents('images/person-48.jpg');
 159                                         $mimetype = 'image/jpeg';
 160                                         break;
 161                                 default:
 162                                         killme();
 163                                         // NOTREACHED
 164                                         break;
 165                         }
 166                 }
 167         }
 168
 169         // Resize only if its not a GIF and it is supported by the library
 170         if (($mimetype != "image/gif") && in_array($mimetype, Image::supportedTypes())) {
 171                 $Image = new Image($data, $mimetype);
 172                 if ($Image->isValid()) {
 173                         if (isset($customres) && $customres > 0 && $customres < 500) {
 174                                 $Image->scaleToSquare($customres);
 175                         }
 176                         $data = $Image->asString();
 177                         $mimetype = $Image->getType();
 178                 }
 179         }
 180
 181         if (function_exists('header_remove')) {
 182                 header_remove('Pragma');
 183                 header_remove('pragma');
 184         }
 185
 186         header("Content-type: ".$mimetype);
 187
 188         if ($prvcachecontrol) {
 189
 190                 // it is a private photo that they have no permission to view.
 191                 // tell the browser not to cache it, in case they authenticate
 192                 // and subsequently have permission to see it
 193
 194                 header("Cache-Control: no-store, no-cache, must-revalidate");
 195
 196         } else {
 197                 header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 198                 header('Etag: "'.md5($data).'"');
 199                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 200                 header("Cache-Control: max-age=31536000");
 201         }
 202         echo $data;
 203
 204         // If the photo is public and there is an existing photo directory store the photo there
 205         if ($public and ($file != "")) {
 206                 // If the photo path isn't there, try to create it
 207                 $basepath = $a->get_basepath();
 208                 if (!is_dir($basepath."/photo")) {
 209                         if (is_writable($basepath)) {
 210                                 mkdir($basepath."/photo");
 211                         }
 212                 }
 213
 214                 if (is_dir($basepath."/photo")) {
 215                         file_put_contents($basepath."/photo/".$file, $data);
 216                 }
 217         }
 218
 219         killme();
 220         // NOTREACHED
 221 }