mod/photo.php

   1 <?php
   2
   3 function photo_init(&$a) {
   4
   5         switch($a->argc) {
   6                 case 3:
   7                         $person = $a->argv[2];
   8                         $type = $a->argv[1];
   9                         break;
  10                 case 2:
  11                         $photo = $a->argv[1];
  12                         break;
  13                 case 1:
  14                 default:
  15                         killme();
  16                         return; // NOTREACHED
  17         }
  18
  19         if(x($type)) {
  20                 switch($type) {
  21
  22                         case 'profile':
  23                                 $resolution = 4;
  24                                 break;
  25                         case 'avatar':
  26                         default:
  27                                 $resolution = 5;
  28                                 break;
  29                 }
  30
  31                 $uid = str_replace('.jpg', '', $person);
  32
  33                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  34                         intval($resolution),
  35                         intval($uid)
  36                 );
  37                 if(count($r)) {
  38                         $data = $r[0]['data'];
  39                 }
  40                 if(x($data) === false) {
  41                         $data = file_get_contents(($resolution == 5)
  42                                 ? 'images/default-profile-sm.jpg'
  43                                 : 'images/default-profile.jpg');
  44                 }
  45         }
  46         else {
  47
  48                 $resolution = 0;
  49                 $photo = str_replace('.jpg','',$photo);
  50
  51                 if(substr($photo,-2,1) == '-') {
  52                         $resolution = intval(substr($photo,-1,1));
  53                         $photo = substr($photo,0,-2);
  54                 }
  55
  56                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
  57                         dbesc($photo),
  58                         intval($resolution)
  59                 );
  60                 if(count($r)) {
  61
  62                         $owner = $r[0]['uid'];
  63
  64                         $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
  65
  66                         if(local_user() && ($owner == $_SESSION['uid'])) {
  67
  68                                 // Owner can always see his/her photos
  69                                 $sql_extra = '';
  70
  71                         }
  72                         elseif(remote_user()) {
  73
  74                                 // authenticated visitor - here lie dragons
  75
  76                                 $groups = init_groups_visitor($_SESSION['visitor_id']);
  77                                 $gs = '<<>>'; // should be impossible to match
  78                                 if(count($groups)) {
  79                                         foreach($groups as $g)
  80                                                 $gs .= '|<' . intval($g) . '>';
  81                                 }
  82
  83                                 $sql_extra = sprintf(
  84                                         " AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' )
  85                                           AND ( `deny_cid`  = '' OR  NOT `deny_cid` REGEXP '<%d>' )
  86                                           AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
  87                                           AND ( `deny_gid`  = '' OR NOT `deny_gid` REGEXP '%s') ",
  88
  89                                         intval($_SESSION['visitor_id']),
  90                                         intval($_SESSION['visitor_id']),
  91                                         dbesc($gs),
  92                                         dbesc($gs)
  93                                 );
  94                         }
  95
  96                         // Now we'll see if we can access the photo
  97
  98                         $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d $sql_extra LIMIT 1",
  99                                 dbesc($photo),
 100                                 intval($resolution)
 101                         );
 102
 103                         if(count($r)) {
 104                                 $data = $r[0]['data'];
 105                         }
 106                 }
 107         }
 108
 109         if(x($data) === false) {
 110                 killme();
 111                 return; // NOTREACHED
 112         }
 113
 114         header("Content-type: image/jpeg");
 115         header('Expires: ' . datetime_convert('UTC','UTC', 'now + 30 minutes', 'D, d M Y H:i:s' . ' GMT'));
 116         header('Expires: ' . datetime_convert('UTC','UTC', 'now + 30 minutes', 'D, d M Y H:i:s' . ' GMT'));
 117         header("Cache-Control: max-age=3600, must-revalidate");
 118         echo $data;
 119         killme();
 120         return; //NOTREACHED
 121 }