/**
* Set headers and send the file to the client
*
* @author Andreas Gohr <*****@*****.**>
* @param string The full path to the file
* @param string The Mime Type of the file
*/
function sendFile($file, $mime, $overrideFileName = '')
{
global $vm_mainframe;
// send headers
header("Content-Type: {$mime}");
list($start, $len) = vmConnector::http_rangeRequest(filesize($file));
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Accept-Ranges: bytes');
//application mime type is downloadable
if (strtolower(substr($mime, 0, 11)) == 'application') {
if ($overrideFileName == '') {
$filename = basename($file);
} else {
$filename = $overrideFileName;
}
header('Content-Disposition: attachment; filename="' . $filename . '";');
}
$chunksize = 1 * (1024 * 1024);
// send file contents
$fp = @fopen($file, "rb");
if ($fp) {
fseek($fp, $start);
//seek to start of range
$chunk = $len > $chunksize ? $chunksize : $len;
while (!feof($fp) && $chunk > 0) {
@set_time_limit();
// large files can take a lot of time
print fread($fp, $chunk);
flush();
$len -= $chunk;
$chunk = $len > $chunksize ? $chunksize : $len;
}
fclose($fp);
} else {
header("HTTP/1.0 500 Internal Server Error");
print "Could not read {$file} - bad permissions?";
$vm_mainframe->close(true);
}
}
/**
* Handles a download Request
*
* @param array $d
* @return boolean
*/
function download_request(&$d)
{
global $download_id, $VM_LANG, $vmLogger;
$db = new ps_DB();
$download_id = $db->getEscaped(vmGet($d, "download_id"));
$q = "SELECT * FROM #__{vm}_product_download WHERE";
$q .= " download_id = '{$download_id}'";
$db->query($q);
$db->next_record();
$download_id = $db->f("download_id");
$file_name = $db->f("file_name");
if (strncmp($file_name, 'http', 4) !== 0) {
$datei = DOWNLOADROOT . $file_name;
} else {
$datei = $file_name;
}
$download_max = $db->f("download_max");
$end_date = $db->f("end_date");
$zeit = time();
if (!$download_id) {
$vmLogger->err($VM_LANG->_('PHPSHOP_DOWNLOADS_ERR_INV', false));
return false;
//vmRedirect("index.php?option=com_virtuemart&page=shop.downloads", $d["error"]);
} elseif ($download_max == "0") {
$q = "DELETE FROM #__{vm}_product_download";
$q .= " WHERE download_id = '" . $download_id . "'";
$db->query($q);
$db->next_record();
$vmLogger->err($VM_LANG->_('PHPSHOP_DOWNLOADS_ERR_MAX', false));
return false;
//vmRedirect("index.php?option=com_virtuemart&page=shop.downloads", $d["error"]);
} elseif ($end_date != "0" && $zeit > $end_date) {
$q = "DELETE FROM #__{vm}_product_download";
$q .= " WHERE download_id = '" . $download_id . "'";
$db->query($q);
$db->next_record();
$vmLogger->err($VM_LANG->_('PHPSHOP_DOWNLOADS_ERR_EXP', false));
return false;
//vmRedirect("index.php?option=com_virtuemart&page=shop.downloads", $d["error"]);
}
require_once CLASSPATH . 'connectionTools.class.php';
$download_count = true;
if (@file_exists($datei)) {
// Check if this is a request for a special range of the file (=Resume Download)
$range_request = vmConnector::http_rangeRequest(filesize($datei), false);
if ($range_request[0] == 0) {
// this is not a request to resume a download,
$download_count = true;
} else {
$download_count = false;
}
} else {
$download_count = false;
}
// Parameter to check if the file should be removed after download, which is only true,
// if we have a remote file, which was transferred to this server into a temporary file
$unlink = false;
if (strncmp($datei, 'http', 4) === 0) {
require_once CLASSPATH . 'ps_product_files.php';
$datei_local = ps_product_files::getRemoteFile($datei);
if ($datei_local !== false) {
$datei = $datei_local;
$unlink = true;
} else {
$vmLogger->err($VM_LANG->_('VM_DOWNLOAD_FILE_NOTFOUND', false));
return false;
}
} else {
// Check, if file path is correct
// and file is
if (!@file_exists($datei)) {
$vmLogger->err($VM_LANG->_('VM_DOWNLOAD_FILE_NOTFOUND', false));
return false;
//vmRedirect("index.php?option=com_virtuemart&page=shop.downloads", $d["error"]);
}
if (!@is_readable($datei)) {
$vmLogger->err($VM_LANG->_('VM_DOWNLOAD_FILE_NOTREADABLE', false));
return false;
//vmRedirect("index.php?option=com_virtuemart&page=shop.downloads", $d["error"]);
}
}
if ($download_count) {
// decrement the download_max to limit the number of downloads
$q = "UPDATE `#__{vm}_product_download` SET";
$q .= " `download_max`=`download_max` - 1";
$q .= " WHERE download_id = '" . $download_id . "'";
$db->query($q);
$db->next_record();
}
if ($end_date == "0") {
// Set the Download Expiry Date, so the download can expire after DOWNLOAD_EXPIRE seconds
$end_date = time('u') + DOWNLOAD_EXPIRE;
$q = "UPDATE #__{vm}_product_download SET";
$q .= " end_date={$end_date}";
$q .= " WHERE download_id = '" . $download_id . "'";
$db->query($q);
$db->next_record();
}
if (ereg('Opera(/| )([0-9].[0-9]{1,2})', $_SERVER['HTTP_USER_AGENT'])) {
$UserBrowser = "Opera";
} elseif (ereg('MSIE ([0-9].[0-9]{1,2})', $_SERVER['HTTP_USER_AGENT'])) {
$UserBrowser = "IE";
} else {
$UserBrowser = '';
}
$mime_type = $UserBrowser == 'IE' || $UserBrowser == 'Opera' ? 'application/octetstream' : 'application/octet-stream';
// dump anything in the buffer
while (@ob_end_clean()) {
}
vmConnector::sendFile($datei, $mime_type, basename($file_name));
if ($unlink) {
// remove the temporarily downloaded remote file
@unlink($datei);
}
$GLOBALS['vm_mainframe']->close(true);
}
