<?php
/**
 * Direct Download plugin for ViewGit.
 *
 * This plugin permit direct download of project file using URL like
 *
 * http://my.viewgit.com/?a=directdownload&p=myproject&h=HEAD&f=path/to/my/poject/file
 *
 * @author Benjamin Renard <brenard@zionetrix.net>
 */
class DirectDownloadPlugin extends VGPlugin
{
	function __construct() {
		global $conf;
		$this->register_action('directdownload');
	}

	function action($action) {
		if ($action === 'directdownload') {
			$project = validate_project($_REQUEST['p']);
			$hash = validate_hash($_REQUEST['h']);
			if (isset($_REQUEST['f'])) {
				$path = $_REQUEST['f'];
				$infos=git_get_path_info($project,$hash,$path);
				if (count($infos)!=1) {
					die('Invalid path');
				}
				$hash=$infos[0]['hash'];
				$name=$infos[0]['name'];
			}
			else {
				$name = $_REQUEST['n'];
			}
			
			header('Content-type: application/octet-stream');
			header("Content-Disposition: attachment; filename=$name");
			
			run_git_passthru($project, "cat-file blob $hash");
			die();
		}
	}
}