mod/photo.php

   1 <?php
   2
   3 require_once('include/security.php');
   4 require_once('include/Photo.php');
   5
   6 if(! function_exists('photo_init')) {
   7 function photo_init(&$a) {
   8         global $_SERVER;
   9
  10         $prvcachecontrol = false;
  11         $file = "";
  12
  13         switch($a->argc) {
  14                 case 4:
  15                         $person = $a->argv[3];
  16                         $customres = intval($a->argv[2]);
  17                         $type = $a->argv[1];
  18                         break;
  19                 case 3:
  20                         $person = $a->argv[2];
  21                         $type = $a->argv[1];
  22                         break;
  23                 case 2:
  24                         $photo = $a->argv[1];
  25                         $file = $photo;
  26                         break;
  27                 case 1:
  28                 default:
  29                         killme();
  30                         // NOTREACHED
  31         }
  32
  33         //      strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= filemtime($localFileName)) {
  34         if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
  35                 header('HTTP/1.1 304 Not Modified');
  36                 header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
  37                 header('Etag: '.$_SERVER['HTTP_IF_NONE_MATCH']);
  38                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
  39                 header("Cache-Control: max-age=31536000");
  40                 if(function_exists('header_remove')) {
  41                         header_remove('Last-Modified');
  42                         header_remove('Expires');
  43                         header_remove('Cache-Control');
  44                 }
  45                 exit;
  46         }
  47
  48         $default = 'images/person-175.jpg';
  49
  50         if(isset($type)) {
  51
  52
  53                 /**
  54                  * Profile photos
  55                  */
  56
  57                 switch($type) {
  58
  59                         case 'profile':
  60                         case 'custom':
  61                                 $resolution = 4;
  62                                 break;
  63                         case 'micro':
  64                                 $resolution = 6;
  65                                 $default = 'images/person-48.jpg';
  66                                 break;
  67                         case 'avatar':
  68                         default:
  69                                 $resolution = 5;
  70                                 $default = 'images/person-80.jpg';
  71                                 break;
  72                 }
  73
  74                 $uid = str_replace(array('.jpg','.png'),array('',''), $person);
  75
  76                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  77                         intval($resolution),
  78                         intval($uid)
  79                 );
  80                 if(count($r)) {
  81                         $data = $r[0]['data'];
  82                         $mimetype = $r[0]['type'];
  83                 }
  84                 if(! isset($data)) {
  85                         $data = file_get_contents($default);
  86                         $mimetype = 'image/jpeg';
  87                 }
  88         }
  89         else {
  90
  91                 /**
  92                  * Other photos
  93                  */
  94
  95                 $resolution = 0;
  96                 foreach( Photo::supportedTypes() as $m=>$e){
  97                         $photo = str_replace(".$e",'',$photo);
  98                 }
  99
 100                 if(substr($photo,-2,1) == '-') {
 101                         $resolution = intval(substr($photo,-1,1));
 102                         $photo = substr($photo,0,-2);
 103                 }
 104
 105         // check if the photo exists and get the owner of the photo
 106                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
 107                         dbesc($photo),
 108                         intval($resolution)
 109                 );
 110                 if(count($r)) {
 111
 112                         $sql_extra = permissions_sql($r[0]['uid']);
 113
 114                         // Now we'll see if we can access the photo
 115
 116                         $r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` <= %d $sql_extra ORDER BY scale DESC LIMIT 1",
 117                                 dbesc($photo),
 118                                 intval($resolution)
 119                         );
 120
 121                         $public = ($r[0]['allow_cid'] == '') AND ($r[0]['allow_gid'] == '') AND ($r[0]['deny_cid']  == '') AND ($r[0]['deny_gid']  == '');
 122
 123                         if(count($r)) {
 124                                 $resolution = $r[0]['scale'];
 125                                 $data = $r[0]['data'];
 126                                 $mimetype = $r[0]['type'];
 127                         } else {
 128                                 // The picure exists. We already checked with the first query.
 129                                 // obviously, this is not an authorized viev!
 130                                 $data = file_get_contents('images/nosign.jpg');
 131                                 $mimetype = 'image/jpeg';
 132                                 $prvcachecontrol = true;
 133                                 $public = false;
 134                         }
 135                 }
 136         }
 137
 138         if(! isset($data)) {
 139                 if(isset($resolution)) {
 140                         switch($resolution) {
 141
 142                                 case 4:
 143                                         $data = file_get_contents('images/person-175.jpg');
 144                                         $mimetype = 'image/jpeg';
 145                                         break;
 146                                 case 5:
 147                                         $data = file_get_contents('images/person-80.jpg');
 148                                         $mimetype = 'image/jpeg';
 149                                         break;
 150                                 case 6:
 151                                         $data = file_get_contents('images/person-48.jpg');
 152                                         $mimetype = 'image/jpeg';
 153                                         break;
 154                                 default:
 155                                         killme();
 156                                         // NOTREACHED
 157                                         break;
 158                         }
 159                 }
 160         }
 161
 162         // Resize only if its not a GIF
 163         if ($mime != "image/gif") {
 164                 $ph = new Photo($data, $mimetype);
 165                 if($ph->is_valid()) {
 166                         if(isset($customres) && $customres > 0 && $customres < 500) {
 167                                 $ph->scaleImageSquare($customres);
 168                         }
 169                         $data = $ph->imageString();
 170                         $mimetype = $ph->getType();
 171                 }
 172         }
 173
 174         if(function_exists('header_remove')) {
 175                 header_remove('Pragma');
 176                 header_remove('pragma');
 177         }
 178
 179         header("Content-type: ".$mimetype);
 180
 181         if($prvcachecontrol) {
 182
 183                 // it is a private photo that they have no permission to view.
 184                 // tell the browser not to cache it, in case they authenticate
 185                 // and subsequently have permission to see it
 186
 187                 header("Cache-Control: no-store, no-cache, must-revalidate");
 188
 189         }
 190         else {
 191                 header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 192                 header('Etag: "'.md5($data).'"');
 193                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 194                 header("Cache-Control: max-age=31536000");
 195         }
 196         echo $data;
 197
 198         // If the photo is public and there is an existing photo directory store the photo there
 199         if ($public and ($file != "")) {
 200                 // If the photo path isn't there, try to create it
 201                 $basepath = $a->get_basepath();
 202                 if (!is_dir($basepath."/photo"))
 203                         if (is_writable($basepath))
 204                                 mkdir($basepath."/photo");
 205
 206                 if (is_dir($basepath."/photo"))
 207                         file_put_contents($basepath."/photo/".$file, $data);
 208         }
 209
 210         killme();
 211         // NOTREACHED
 212 }
 213 }