mod/photo.php

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