mod/photo.php

   1 <?php
   2
   3 use Friendica\App;
   4
   5 require_once('include/security.php');
   6 require_once('include/Photo.php');
   7
   8 function photo_init(App $a) {
   9         global $_SERVER;
  10
  11         $prvcachecontrol = false;
  12         $file = "";
  13
  14         switch ($a->argc) {
  15                 case 4:
  16                         $person = $a->argv[3];
  17                         $customres = intval($a->argv[2]);
  18                         $type = $a->argv[1];
  19                         break;
  20                 case 3:
  21                         $person = $a->argv[2];
  22                         $type = $a->argv[1];
  23                         break;
  24                 case 2:
  25                         $photo = $a->argv[1];
  26                         $file = $photo;
  27                         break;
  28                 case 1:
  29                 default:
  30                         killme();
  31                         // NOTREACHED
  32         }
  33
  34         if (isset($_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                  * 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', '.gif'), array('', '', ''), $person);
  74
  75                 foreach (Photo::supportedTypes() AS $m => $e) {
  76                         $uid = str_replace('.'.$e, '', $uid);
  77                 }
  78
  79                 $r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
  80                         intval($resolution),
  81                         intval($uid)
  82                 );
  83                 if (dbm::is_result($r)) {
  84                         $data = $r[0]['data'];
  85                         $mimetype = $r[0]['type'];
  86                 }
  87                 if (empty($data)) {
  88                         $data = file_get_contents($default);
  89                         $mimetype = 'image/jpeg';
  90                 }
  91         } else {
  92
  93                 /**
  94                  * Other photos
  95                  */
  96
  97                 $resolution = 0;
  98                 $photo = str_replace(array('.jpg', '.png', '.gif'), array('', '', ''), $photo);
  99
 100                 foreach (Photo::supportedTypes() AS $m => $e) {
 101                         $photo = str_replace('.'.$e, '', $photo);
 102                 }
 103
 104                 if (substr($photo, -2, 1) == '-') {
 105                         $resolution = intval(substr($photo, -1, 1));
 106                         $photo = substr($photo, 0, -2);
 107                 }
 108
 109                 // check if the photo exists and get the owner of the photo
 110                 $r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' LIMIT 1",
 111                         dbesc($photo),
 112                         intval($resolution)
 113                 );
 114                 if (dbm::is_result($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 $sql_extra ORDER BY scale DESC LIMIT 1",
 121                                 dbesc($photo),
 122                                 intval($resolution)
 123                         );
 124
 125                         $public = (dbm::is_result($r)) && ($r[0]['allow_cid'] == '') && ($r[0]['allow_gid'] == '') && ($r[0]['deny_cid']  == '') && ($r[0]['deny_gid']  == '');
 126
 127                         if (dbm::is_result($r)) {
 128                                 $resolution = $r[0]['scale'];
 129                                 $data = $r[0]['data'];
 130                                 $mimetype = $r[0]['type'];
 131                         } else {
 132                                 // The picure exists. We already checked with the first query.
 133                                 // obviously, this is not an authorized viev!
 134                                 $data = file_get_contents('images/nosign.jpg');
 135                                 $mimetype = 'image/jpeg';
 136                                 $prvcachecontrol = true;
 137                                 $public = false;
 138                         }
 139                 }
 140         }
 141
 142         if (empty($data)) {
 143                 if (isset($resolution)) {
 144                         switch ($resolution) {
 145
 146                                 case 4:
 147                                         $data = file_get_contents('images/person-175.jpg');
 148                                         $mimetype = 'image/jpeg';
 149                                         break;
 150                                 case 5:
 151                                         $data = file_get_contents('images/person-80.jpg');
 152                                         $mimetype = 'image/jpeg';
 153                                         break;
 154                                 case 6:
 155                                         $data = file_get_contents('images/person-48.jpg');
 156                                         $mimetype = 'image/jpeg';
 157                                         break;
 158                                 default:
 159                                         killme();
 160                                         // NOTREACHED
 161                                         break;
 162                         }
 163                 }
 164         }
 165
 166         // Resize only if its not a GIF and it is supported by the library
 167         if (($mimetype != "image/gif") && in_array($mimetype, Photo::supportedTypes())) {
 168                 $ph = new Photo($data, $mimetype);
 169                 if ($ph->is_valid()) {
 170                         if (isset($customres) && $customres > 0 && $customres < 500) {
 171                                 $ph->scaleImageSquare($customres);
 172                         }
 173                         $data = $ph->imageString();
 174                         $mimetype = $ph->getType();
 175                 }
 176         }
 177
 178         if (function_exists('header_remove')) {
 179                 header_remove('Pragma');
 180                 header_remove('pragma');
 181         }
 182
 183         header("Content-type: ".$mimetype);
 184
 185         if ($prvcachecontrol) {
 186
 187                 // it is a private photo that they have no permission to view.
 188                 // tell the browser not to cache it, in case they authenticate
 189                 // and subsequently have permission to see it
 190
 191                 header("Cache-Control: no-store, no-cache, must-revalidate");
 192
 193         } else {
 194                 header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
 195                 header('Etag: "'.md5($data).'"');
 196                 header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
 197                 header("Cache-Control: max-age=31536000");
 198         }
 199         echo $data;
 200
 201         // If the photo is public and there is an existing photo directory store the photo there
 202         if ($public and ($file != "")) {
 203                 // If the photo path isn't there, try to create it
 204                 $basepath = $a->get_basepath();
 205                 if (!is_dir($basepath."/photo")) {
 206                         if (is_writable($basepath)) {
 207                                 mkdir($basepath."/photo");
 208                         }
 209                 }
 210
 211                 if (is_dir($basepath."/photo")) {
 212                         file_put_contents($basepath."/photo/".$file, $data);
 213                 }
 214         }
 215
 216         killme();
 217         // NOTREACHED
 218 }