friendica_2021.01_tupambae_.../mod/attach.php
Roland Häder 6a8a36f12d More usage of dbm::is_result($r) instead of count($r):
- count() returns very different results and never a boolean (not even false on
  error condition).
- therefore you should NOT use it in boolean expressions. This still *can* be
  done in PHP because of its lazyness. But it is discouraged if it comes to
  more clean code.

Signed-off-by: Roland Häder <roland@mxchange.org>
2016-12-13 10:44:13 +01:00

50 lines
1.2 KiB
PHP

<?php
require_once('include/security.php');
function attach_init(&$a) {
if($a->argc != 2) {
notice( t('Item not available.') . EOL);
return;
}
$item_id = intval($a->argv[1]);
// Check for existence, which will also provide us the owner uid
$r = q("SELECT * FROM `attach` WHERE `id` = %d LIMIT 1",
intval($item_id)
);
if(! dbm::is_result($r)) {
notice( t('Item was not found.'). EOL);
return;
}
$sql_extra = permissions_sql($r[0]['uid']);
// Now we'll see if we can access the attachment
$r = q("SELECT * FROM `attach` WHERE `id` = '%d' $sql_extra LIMIT 1",
dbesc($item_id)
);
if(! dbm::is_result($r)) {
notice( t('Permission denied.') . EOL);
return;
}
// Use quotes around the filename to prevent a "multiple Content-Disposition"
// error in Chrome for filenames with commas in them
header('Content-type: ' . $r[0]['filetype']);
header('Content-length: ' . $r[0]['filesize']);
if(isset($_GET['attachment']) && $_GET['attachment'] === '0')
header('Content-disposition: filename="' . $r[0]['filename'] . '"');
else
header('Content-disposition: attachment; filename="' . $r[0]['filename'] . '"');
echo $r[0]['data'];
killme();
// NOTREACHED
}