/**
* Check if a Phorum file exists.
*
* (this is a simple wrapper function around the
* {@link phorum_api_file_check_read_access()} function)
*
* @param integer $file_id
* The file_id of the Phorum file to check.
*
* @return bool
* TRUE in case the file exists or FALSE if it doesn't.
*/
function phorum_api_file_exists($file_id)
{
$file = phorum_api_file_check_read_access($file_id, PHORUM_FLAG_IGNORE_PERMS);
$exists = empty($file) ? FALSE : TRUE;
return $exists;
}
// //
////////////////////////////////////////////////////////////////////////////////
define('phorum_page', 'file');
require_once './common.php';
require_once PHORUM_PATH . '/include/api/file.php';
// We start a buffer here, so we can catch any (warning) output
// from being prepended to file data that we return. The file
// API layer will handle cleaning up of the buffered data.
ob_start();
// The "file" argument contains the ID of the requested file.
// If this argument is missing, we redirect the user back to
// the message list for the forum.
if (empty($PHORUM["args"]["file"])) {
phorum_api_redirect(PHORUM_LIST_URL);
}
$file_id = (int) $PHORUM["args"]["file"];
// Check if the file is available and if the user is allowed to read it.
$file = phorum_api_file_check_read_access($file_id);
// Handle file access errors.
if ($file === FALSE) {
$PHORUM["DATA"]["ERROR"] = phorum_api_error_message();
phorum_build_common_urls();
phorum_api_output("message");
return;
}
// Access is allowed. Send the file to the browser.
$flags = empty($PHORUM['args']['download']) ? 0 : PHORUM_FLAG_FORCE_DOWNLOAD;
phorum_api_file_send($file, $flags);
// Exit here explicitly for not giving back control to portable and
// embedded Phorum setups.
exit(0);
