mod/photo.php

   1 <?php
   2
   3 use Friendica\App;
   4
   5 require_once('include/security.php');
   6 require_once('include/Photo.php');
   7
   8 function photo_init(App $a) {
   9         global $_SERVER;
  10
  11         $prvcachecontrol = false;
  12         $file = "";
  13
  14         switch($a->argc) {
  15                 case 4:
  16                         $person = $a->argv[3];
  17                         $customres = intval($a->argv[2]);
  18                         $type = $a->argv[1];
  19                         break;
  20                 case 3:
  21                         $person = $a->argv[2];
  22                         $type = $a->argv[1];
  23                         break;
  24                 case 2:
  25                         $photo = $a->argv[1];
  26                         $file = $photo;
  27                         break;
  28                 case 1:
  29                 default:
  30                         killme();
  31                         // NOTREACHED
  32         }
  33
  34         //      strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime($localFileName)) {
  35         if (isset($_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                 header('Etag: '.$_SERVER['HTTP_IF_NONE_MATCH']);
  39                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
  40                 header("Cache-Control: max-age=31536000");
  41                 if(function_exists('header_remove')) {
  42                         header_remove('Last-Modified');
  43                         header_remove('Expires');
  44                         header_remove('Cache-Control');
  45                 }
  46                 exit;
  47         }
  48
  49         $default = 'images/person-175.jpg';
  50
  51         if(isset($type)) {
  52
  53
  54                 /**
  55                  * Profile photos
  56                  */
  57
  58                 switch($type) {
  59
  60                         case 'profile':
  61                         case 'custom':
  62                                 $resolution = 4;
  63                                 break;
  64                         case 'micro':
  65                                 $resolution = 6;
  66                                 $default = 'images/person-48.jpg';
  67                                 break;
  68                         case 'avatar':
  69                         default:
  70                                 $resolution = 5;
  71                                 $default = 'images/person-80.jpg';
  72                                 break;
  73                 }
  74
  75                 $uid = str_replace(array('.jpg','.png'),array('',''), $person);
  76
  77                 $r = qu("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  78                         intval($resolution),
  79                         intval($uid)
  80                 );
  81                 if (dbm::is_result($r)) {
  82                         $data = $r[0]['data'];
  83                         $mimetype = $r[0]['type'];
  84                 }
  85                 if(! isset($data)) {
  86                         $data = file_get_contents($default);
  87                         $mimetype = 'image/jpeg';
  88                 }
  89         }
  90         else {
  91
  92                 /**
  93                  * Other photos
  94                  */
  95
  96                 $resolution = 0;
  97                 foreach( Photo::supportedTypes() as $m=>$e){
  98                         $photo = str_replace(".$e",'',$photo);
  99                 }
 100
 101                 if(substr($photo,-2,1) == '-') {
 102                         $resolution = intval(substr($photo,-1,1));
 103                         $photo = substr($photo,0,-2);
 104                 }
 105
 106         // check if the photo exists and get the owner of the photo
 107                 $r = qu("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
 108                         dbesc($photo),
 109                         intval($resolution)
 110                 );
 111                 if (dbm::is_result($r)) {
 112
 113                         $sql_extra = permissions_sql($r[0]['uid']);
 114
 115                         // Now we'll see if we can access the photo
 116
 117                         $r = qu("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` <= %d $sql_extra ORDER BY scale DESC LIMIT 1",
 118                                 dbesc($photo),
 119                                 intval($resolution)
 120                         );
 121
 122                         $public = (dbm::is_result($r)) && ($r[0]['allow_cid'] == '') && ($r[0]['allow_gid'] == '') && ($r[0]['deny_cid']  == '') && ($r[0]['deny_gid']  == '');
 123
 124                         if (dbm::is_result($r)) {
 125                                 $resolution = $r[0]['scale'];
 126                                 $data = $r[0]['data'];
 127                                 $mimetype = $r[0]['type'];
 128                         } else {
 129                                 // The picure exists. We already checked with the first query.
 130                                 // obviously, this is not an authorized viev!
 131                                 $data = file_get_contents('images/nosign.jpg');
 132                                 $mimetype = 'image/jpeg';
 133                                 $prvcachecontrol = true;
 134                                 $public = false;
 135                         }
 136                 }
 137         }
 138
 139         if(! isset($data)) {
 140                 if(isset($resolution)) {
 141                         switch($resolution) {
 142
 143                                 case 4:
 144                                         $data = file_get_contents('images/person-175.jpg');
 145                                         $mimetype = 'image/jpeg';
 146                                         break;
 147                                 case 5:
 148                                         $data = file_get_contents('images/person-80.jpg');
 149                                         $mimetype = 'image/jpeg';
 150                                         break;
 151                                 case 6:
 152                                         $data = file_get_contents('images/person-48.jpg');
 153                                         $mimetype = 'image/jpeg';
 154                                         break;
 155                                 default:
 156                                         killme();
 157                                         // NOTREACHED
 158                                         break;
 159                         }
 160                 }
 161         }
 162
 163         // Resize only if its not a GIF
 164         if ($mime != "image/gif") {
 165                 $ph = new Photo($data, $mimetype);
 166                 if($ph->is_valid()) {
 167                         if(isset($customres) && $customres > 0 && $customres < 500) {
 168                                 $ph->scaleImageSquare($customres);
 169                         }
 170                         $data = $ph->imageString();
 171                         $mimetype = $ph->getType();
 172                 }
 173         }
 174
 175         if(function_exists('header_remove')) {
 176                 header_remove('Pragma');
 177                 header_remove('pragma');
 178         }
 179
 180         header("Content-type: ".$mimetype);
 181
 182         if($prvcachecontrol) {
 183
 184                 // it is a private photo that they have no permission to view.
 185                 // tell the browser not to cache it, in case they authenticate
 186                 // and subsequently have permission to see it
 187
 188                 header("Cache-Control: no-store, no-cache, must-revalidate");
 189
 190         }
 191         else {
 192                 header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 193                 header('Etag: "'.md5($data).'"');
 194                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 195                 header("Cache-Control: max-age=31536000");
 196         }
 197         echo $data;
 198
 199         // If the photo is public and there is an existing photo directory store the photo there
 200         if ($public and ($file != "")) {
 201                 // If the photo path isn't there, try to create it
 202                 $basepath = $a->get_basepath();
 203                 if (!is_dir($basepath."/photo"))
 204                         if (is_writable($basepath))
 205                                 mkdir($basepath."/photo");
 206
 207                 if (is_dir($basepath."/photo"))
 208                         file_put_contents($basepath."/photo/".$file, $data);
 209         }
 210
 211         killme();
 212         // NOTREACHED
 213 }