mod/photo.php

   1 <?php
   2
   3 require_once('include/security.php');
   4
   5 function photo_init(&$a) {
   6
   7         switch($a->argc) {
   8                 case 4:
   9                         $person = $a->argv[3];
  10                         $customres = intval($a->argv[2]);
  11                         $type = $a->argv[1];
  12                         break;
  13                 case 3:
  14                         $person = $a->argv[2];
  15                         $type = $a->argv[1];
  16                         break;
  17                 case 2:
  18                         $photo = $a->argv[1];
  19                         break;
  20                 case 1:
  21                 default:
  22                         killme();
  23                         // NOTREACHED
  24         }
  25
  26         $default = 'images/default-profile.jpg';
  27
  28         if(isset($type)) {
  29
  30                 /**
  31                  * Profile photos
  32                  */
  33
  34                 switch($type) {
  35
  36                         case 'profile':
  37                         case 'custom':
  38                                 $resolution = 4;
  39                                 break;
  40                         case 'micro':
  41                                 $resolution = 6;
  42                                 $default = 'images/default-profile-mm.jpg';
  43                                 break;
  44                         case 'avatar':
  45                         default:
  46                                 $resolution = 5;
  47                                 $default = 'images/default-profile-sm.jpg';
  48                                 break;
  49                 }
  50
  51                 $uid = str_replace('.jpg', '', $person);
  52
  53                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  54                         intval($resolution),
  55                         intval($uid)
  56                 );
  57                 if(count($r)) {
  58                         $data = $r[0]['data'];
  59                 }
  60                 if(! isset($data)) {
  61                         $data = file_get_contents($default);
  62                 }
  63         }
  64         else {
  65
  66                 /**
  67                  * Other photos
  68                  */
  69
  70                 $resolution = 0;
  71                 $photo = str_replace('.jpg','',$photo);
  72
  73                 if(substr($photo,-2,1) == '-') {
  74                         $resolution = intval(substr($photo,-1,1));
  75                         $photo = substr($photo,0,-2);
  76                 }
  77
  78                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
  79                         dbesc($photo),
  80                         intval($resolution)
  81                 );
  82                 if(count($r)) {
  83
  84                         $sql_extra = permissions_sql($r[0]['uid']);
  85
  86                         // Now we'll see if we can access the photo
  87
  88                         $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d $sql_extra LIMIT 1",
  89                                 dbesc($photo),
  90                                 intval($resolution)
  91                         );
  92
  93                         if(count($r)) {
  94                                 $data = $r[0]['data'];
  95                         }
  96                         else {
  97
  98                                 // Does the picture exist? It may be a remote person with no credentials,
  99                                 // but who should otherwise be able to view it. Show a default image to let
 100                                 // them know permissions was denied. It may be possible to view the image
 101                                 // through an authenticated profile visit.
 102                                 // There won't be many completely unauthorised people seeing this because
 103                                 // they won't have the photo link, so there's a reasonable chance that the person
 104                                 // might be able to obtain permission to view it.
 105
 106                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
 107                                         dbesc($photo),
 108                                         intval($resolution)
 109                                 );
 110                                 if(count($r)) {
 111                                         $data = file_get_contents('images/nosign.jpg');
 112                                 }
 113                         }
 114                 }
 115         }
 116
 117         if(! isset($data)) {
 118                 killme();
 119                 // NOTREACHED
 120         }
 121
 122         if(intval($customres) && $customres > 0 && $customres < 500) {
 123                 require_once('include/Photo.php');
 124                 $ph = new Photo($data);
 125                 if($ph->is_valid()) {
 126                         $ph->scaleImageSquare($customres);
 127                         $data = $ph->imageString();
 128                 }
 129         }
 130
 131         header("Content-type: image/jpeg");
 132         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
 133         header("Cache-Control: max-age=" . (3600*24));
 134         echo $data;
 135         killme();
 136         // NOTREACHED
 137 }