mod/photo.php

   1 <?php
   2
   3 require_once('include/security.php');
   4 require_once('include/Photo.php');
   5
   6 function photo_init(&$a) {
   7
   8         // To-Do:
   9         // - checking with realpath
  10         // - checking permissions
  11         /*
  12         $cache = get_config('system','itemcache');
  13         if (($cache != '') and is_dir($cache)) {
  14                 $cachefile = $cache."/".$a->argc."-".$a->argv[1]."-".$a->argv[2]."-".$a->argv[3];
  15                 if (file_exists($cachefile)) {
  16                         $data = file_get_contents($cachefile);
  17
  18                         if(function_exists('header_remove')) {
  19                                 header_remove('Pragma');
  20                                 header_remove('pragma');
  21                         }
  22
  23                         header("Content-type: image/jpeg");
  24                         header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
  25                         header("Cache-Control: max-age=" . (3600*24));
  26                         echo $data;
  27                         killme();
  28                         // NOTREACHED
  29                 }
  30         }*/
  31
  32         $prvcachecontrol = false;
  33
  34         switch($a->argc) {
  35                 case 4:
  36                         $person = $a->argv[3];
  37                         $customres = intval($a->argv[2]);
  38                         $type = $a->argv[1];
  39                         break;
  40                 case 3:
  41                         $person = $a->argv[2];
  42                         $type = $a->argv[1];
  43                         break;
  44                 case 2:
  45                         $photo = $a->argv[1];
  46                         break;
  47                 case 1:
  48                 default:
  49                         killme();
  50                         // NOTREACHED
  51         }
  52
  53         $default = 'images/person-175.jpg';
  54
  55         if(isset($type)) {
  56
  57
  58                 /**
  59                  * Profile photos
  60                  */
  61
  62                 switch($type) {
  63
  64                         case 'profile':
  65                         case 'custom':
  66                                 $resolution = 4;
  67                                 break;
  68                         case 'micro':
  69                                 $resolution = 6;
  70                                 $default = 'images/person-48.jpg';
  71                                 break;
  72                         case 'avatar':
  73                         default:
  74                                 $resolution = 5;
  75                                 $default = 'images/person-80.jpg';
  76                                 break;
  77                 }
  78
  79                 $uid = str_replace(array('.jpg','.png'),array('',''), $person);
  80
  81                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  82                         intval($resolution),
  83                         intval($uid)
  84                 );
  85                 if(count($r)) {
  86                         $data = $r[0]['data'];
  87                         $mimetype = $r[0]['type'];
  88                 }
  89                 if(! isset($data)) {
  90                         $data = file_get_contents($default);
  91                         $mimetype = 'image/jpeg';
  92                 }
  93         }
  94         else {
  95
  96                 /**
  97                  * Other photos
  98                  */
  99
 100                 $resolution = 0;
 101                 foreach( Photo::supportedTypes() as $m=>$e){
 102                         $photo = str_replace(".$e",'',$photo);
 103                 }
 104
 105                 if(substr($photo,-2,1) == '-') {
 106                         $resolution = intval(substr($photo,-1,1));
 107                         $photo = substr($photo,0,-2);
 108                 }
 109
 110                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
 111                         dbesc($photo),
 112                         intval($resolution)
 113                 );
 114                 if(count($r)) {
 115
 116                         $sql_extra = permissions_sql($r[0]['uid']);
 117
 118                         // Now we'll see if we can access the photo
 119
 120                         $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d $sql_extra LIMIT 1",
 121                                 dbesc($photo),
 122                                 intval($resolution)
 123                         );
 124
 125                         if(count($r)) {
 126                                 $data = $r[0]['data'];
 127                                 $mimetype = $r[0]['type'];
 128                         }
 129                         else {
 130
 131                                 // Does the picture exist? It may be a remote person with no credentials,
 132                                 // but who should otherwise be able to view it. Show a default image to let
 133                                 // them know permissions was denied. It may be possible to view the image
 134                                 // through an authenticated profile visit.
 135                                 // There won't be many completely unauthorised people seeing this because
 136                                 // they won't have the photo link, so there's a reasonable chance that the person
 137                                 // might be able to obtain permission to view it.
 138
 139                                 $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
 140                                         dbesc($photo),
 141                                         intval($resolution)
 142                                 );
 143                                 if(count($r)) {
 144                                         $data = file_get_contents('images/nosign.jpg');
 145                                         $mimetype = 'image/jpeg';
 146                                         $prvcachecontrol = true;
 147                                 }
 148                         }
 149                 }
 150         }
 151
 152         if(! isset($data)) {
 153                 if(isset($resolution)) {
 154                         switch($resolution) {
 155
 156                                 case 4:
 157                                         $data = file_get_contents('images/person-175.jpg');
 158                                         $mimetype = 'image/jpeg';
 159                                         break;
 160                                 case 5:
 161                                         $data = file_get_contents('images/person-80.jpg');
 162                                         $mimetype = 'image/jpeg';
 163                                         break;
 164                                 case 6:
 165                                         $data = file_get_contents('images/person-48.jpg');
 166                                         $mimetype = 'image/jpeg';
 167                                         break;
 168                                 default:
 169                                         killme();
 170                                         // NOTREACHED
 171                                         break;
 172                         }
 173                 }
 174         }
 175
 176         if(isset($customres) && $customres > 0 && $customres < 500) {
 177                 $ph = new Photo($data, $mimetype);
 178                 if($ph->is_valid()) {
 179                         $ph->scaleImageSquare($customres);
 180                         $data = $ph->imageString();
 181                         $mimetype = $ph->getType();
 182                 }
 183         }
 184
 185         // Writing in cachefile
 186         if (isset($cachefile) && $cachefile != '')
 187                 file_put_contents($cachefile, $data);
 188
 189         if(function_exists('header_remove')) {
 190                 header_remove('Pragma');
 191                 header_remove('pragma');
 192         }
 193
 194         header("Content-type: ".$mimetype);
 195
 196         if($prvcachecontrol) {
 197
 198                 // it is a private photo that they have no permission to view.
 199                 // tell the browser not to cache it, in case they authenticate
 200                 // and subsequently have permission to see it
 201
 202                 header("Cache-Control: no-store, no-cache, must-revalidate");
 203
 204         }
 205         else {
 206
 207                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
 208                 header("Cache-Control: max-age=" . (3600*24));
 209
 210         }
 211         echo $data;
 212         killme();
 213         // NOTREACHED
 214 }