/**
* Create a log if logging is enabled
*/
private function log($type = '', $status = '', $message = '', $download, $version)
{
if (function_exists('dlm_create_log')) {
dlm_create_log($type, $status, $message, $download, $version);
}
}
/**
* trigger function.
*
* @access private
* @param mixed $download
* @return void
*/
private function trigger($download)
{
global $is_IE;
$version = $download->get_file_version();
$file_paths = $version->mirrors;
if (empty($file_paths)) {
wp_die(__('No file paths defined.', 'download_monitor') . ' <a href="' . home_url() . '">' . __('Go to homepage →', 'download_monitor') . '</a>', __('Download Error', 'download_monitor'));
}
$file_path = $file_paths[array_rand($file_paths)];
if (!$file_path) {
wp_die(__('No file paths defined.', 'download_monitor') . ' <a href="' . home_url() . '">' . __('Go to homepage →', 'download_monitor') . '</a>', __('Download Error', 'download_monitor'));
}
// Check Access
if (!apply_filters('dlm_can_download', true, $download, $version)) {
if ($redirect = apply_filters('dlm_access_denied_redirect', false)) {
wp_redirect($redirect);
} else {
wp_die(__('You do not have permission to access this download.', 'download_monitor') . ' <a href="' . home_url() . '">' . __('Go to homepage →', 'download_monitor') . '</a>', __('Download Error', 'download_monitor'), array('response' => 200));
}
exit;
}
if (empty($_COOKIE['wp_dlm_downloading']) || $download->id != $_COOKIE['wp_dlm_downloading']) {
// Increase download count
$version->increase_download_count();
// Trigger Download Action
do_action('dlm_downloading', $download, $version, $file_path);
// Set cookie to prevent double logging
setcookie('wp_dlm_downloading', $download->id, time() + 60, COOKIEPATH, COOKIE_DOMAIN, false);
// Logging
$this->log = function_exists('dlm_create_log');
} else {
$this->log = false;
}
// Redirect to the file...
if ($download->redirect_only() || apply_filters('dlm_do_not_force', false, $download, $version)) {
if ($this->log) {
dlm_create_log('download', 'redirected', __('Redirected to file', 'download_monitor'), $download, $version);
}
$file_path = str_replace(ABSPATH, site_url('/', 'http'), $file_path);
header('Location: ' . $file_path);
exit;
}
// ...or serve it
if (!is_multisite()) {
$file_path = str_replace(site_url('/', 'https'), ABSPATH, $file_path);
$file_path = str_replace(site_url('/', 'http'), ABSPATH, $file_path);
} else {
// Try to replace network url
$file_path = str_replace(network_admin_url('/', 'https'), ABSPATH, $file_path);
$file_path = str_replace(network_admin_url('/', 'http'), ABSPATH, $file_path);
// Try to replace upload URL
$upload_dir = wp_upload_dir();
$file_path = str_replace($upload_dir['baseurl'], $upload_dir['basedir'], $file_path);
}
// See if its local or remote
if (strstr($file_path, 'http:') || strstr($file_path, 'https:') || strstr($file_path, 'ftp:')) {
$remote_file = true;
} else {
$remote_file = false;
$real_file_path = realpath(current(explode('?', $file_path)));
if (!empty($real_file_path)) {
$file_path = $real_file_path;
}
// See if we need to add abspath if this is a relative URL
if (!file_exists($file_path) && file_exists(ABSPATH . $file_path)) {
$file_path = ABSPATH . $file_path;
}
}
// Get Mime Type
$mime_type = "application/octet-stream";
foreach (get_allowed_mime_types() as $mime => $type) {
$mimes = explode('|', $mime);
if (in_array($version->filetype, $mimes)) {
$mime_type = $type;
break;
}
}
// Get file name
$file_name = basename($file_path);
if (strstr($file_name, '?')) {
$file_name = current(explode('?', $file_name));
}
// Environment + headers
if (!ini_get('safe_mode')) {
@set_time_limit(0);
}
if (function_exists('get_magic_quotes_runtime') && get_magic_quotes_runtime()) {
@set_magic_quotes_runtime(0);
}
if (function_exists('apache_setenv')) {
@apache_setenv('no-gzip', 1);
}
@session_write_close();
@ini_set('zlib.output_compression', 'Off');
@error_reporting(0);
@ob_clean();
// Clear the output buffer
if ($is_IE && is_ssl()) {
// IE bug prevents download via SSL when Cache Control and Pragma no-cache headers set.
header('Expires: Wed, 11 Jan 1984 05:00:00 GMT');
header('Cache-Control: private');
} else {
nocache_headers();
}
header("X-Robots-Tag: noindex, nofollow", true);
header("Content-Type: " . $mime_type);
header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=\"" . $file_name . "\";");
header("Content-Transfer-Encoding: binary");
if ($version->filesize) {
header("Content-Length: " . $version->filesize);
header("Accept-Ranges: bytes");
}
if (get_option('dlm_xsendfile_enabled')) {
if (getcwd()) {
$file_path = trim(preg_replace('`^' . str_replace('\\', '/', getcwd()) . '`', '', $file_path), '/');
}
if (function_exists('apache_get_modules') && in_array('mod_xsendfile', apache_get_modules())) {
if ($this->log) {
dlm_create_log('download', 'redirected', __('Redirected to file', 'download_monitor'), $download, $version);
}
header("X-Sendfile: {$file_path}");
exit;
} elseif (stristr(getenv('SERVER_SOFTWARE'), 'lighttpd')) {
if ($this->log) {
dlm_create_log('download', 'redirected', __('Redirected to file', 'download_monitor'), $download, $version);
}
header("X-LIGHTTPD-send-file: {$file_path}");
exit;
} elseif (stristr(getenv('SERVER_SOFTWARE'), 'nginx') || stristr(getenv('SERVER_SOFTWARE'), 'cherokee')) {
if ($this->log) {
dlm_create_log('download', 'redirected', __('Redirected to file', 'download_monitor'), $download, $version);
}
header("X-Accel-Redirect: /{$file_path}");
exit;
}
}
// multipart-download and download resuming support - http://www.phpgang.com/force-to-download-a-file-in-php_112.html
if (isset($_SERVER['HTTP_RANGE']) && $version->filesize) {
list($a, $range) = explode("=", $_SERVER['HTTP_RANGE'], 2);
list($range) = explode(",", $range, 2);
list($range, $range_end) = explode("-", $range);
$range = intval($range);
if (!$range_end) {
$range_end = $version->filesize - 1;
} else {
$range_end = intval($range_end);
}
$new_length = $range_end - $range + 1;
header("HTTP/1.1 206 Partial Content");
header("Content-Length: {$new_length}");
header("Content-Range: bytes {$range}-{$range_end}/{$version->filesize}");
} else {
$range = false;
}
if ($this->readfile_chunked($file_path, $range)) {
// Complete!
if ($this->log) {
dlm_create_log('download', 'completed', '', $download, $version);
}
} elseif ($remote_file) {
// Redirect - we can't track if this completes or not
if ($this->log) {
dlm_create_log('download', 'redirected', __('Redirected to remote file.', 'download_monitor'), $download, $version);
}
header('Location: ' . $file_path);
} else {
if ($this->log) {
dlm_create_log('download', 'failed', __('File not found', 'download_monitor'), $download, $version);
}
wp_die(__('File not found.', 'download_monitor') . ' <a href="' . home_url() . '">' . __('Go to homepage →', 'download_monitor') . '</a>', __('Download Error', 'download_monitor'), array('response' => 404));
}
exit;
}
