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/*!
* Connect - directory
* Copyright(c) 2011 Sencha Inc.
* Copyright(c) 2011 TJ Holowaychuk
* MIT Licensed
*/
// TODO: icon / style for directories
// TODO: arrow key navigation
// TODO: make icons extensible
/**
* Module dependencies.
*/
var fs = require('fs')
, parse = require('url').parse
, utils = require('../utils')
, path = require('path')
, normalize = path.normalize
, extname = path.extname
, join = path.join;
/**
* Icon cache.
*/
var cache = {};
/**
* Serve directory listings with the given `root` path.
*
* Options:
*
* - `hidden` display hidden (dot) files. Defaults to false.
* - `icons` display icons. Defaults to false.
* - `filter` Apply this filter function to files. Defaults to false.
*
* @param {String} root
* @param {Object} options
* @return {Function}
* @api public
*/
exports = module.exports = function directory(root, options){
options = options || {};
// root required
if (!root) throw new Error('directory() root path required');
var hidden = options.hidden
, icons = options.icons
, filter = options.filter
, root = normalize(root);
return function directory(req, res, next) {
var accept = req.headers.accept || 'text/plain'
, url = parse(req.url)
, dir = decodeURIComponent(url.pathname)
, path = normalize(join(root, dir))
, originalUrl = parse(req.originalUrl)
, originalDir = decodeURIComponent(originalUrl.pathname)
, showUp = path != root && path != root + '/';
// null byte(s)
if (~path.indexOf('\0')) return utils.badRequest(res);
// malicious path
if (0 != path.indexOf(root)) return utils.forbidden(res);
// check if we have a directory
fs.stat(path, function(err, stat){
if (err) return 'ENOENT' == err.code
? next()
: next(err);
if (!stat.isDirectory()) return next();
// fetch files
fs.readdir(path, function(err, files){
if (err) return next(err);
if (!hidden) files = removeHidden(files);
if (filter) files = files.filter(filter);
files.sort();
// content-negotiation
for (var key in exports) {
if (~accept.indexOf(key) || ~accept.indexOf('*/*')) {
exports[key](req, res, files, next, originalDir, showUp, icons);
return;
}
}
utils.notAcceptable(res);
});
});
};
};
/**
* Respond with text/html.
*/
exports.html = function(req, res, files, next, dir, showUp, icons){
fs.readFile('/usr/share/node-connect/public/directory.html', 'utf8', function(err, str){
if (err) return next(err);
fs.readFile('/usr/share/node-connect/public/style.css', 'utf8', function(err, style){
if (err) return next(err);
if (showUp) files.unshift('..');
str = str
.replace('{style}', style)
.replace('{files}', html(files, dir, icons))
.replace('{directory}', dir)
.replace('{linked-path}', htmlPath(dir));
res.setHeader('Content-Type', 'text/html');
res.setHeader('Content-Length', str.length);
res.end(str);
});
});
};
/**
* Respond with application/json.
*/
exports.json = function(req, res, files){
files = JSON.stringify(files);
res.setHeader('Content-Type', 'application/json');
res.setHeader('Content-Length', files.length);
res.end(files);
};
/**
* Respond with text/plain.
*/
exports.plain = function(req, res, files){
files = files.join('\n') + '\n';
res.setHeader('Content-Type', 'text/plain');
res.setHeader('Content-Length', files.length);
res.end(files);
};
/**
* Map html `dir`, returning a linked path.
*/
function htmlPath(dir) {
var curr = [];
return dir.split('/').map(function(part){
curr.push(part);
return '<a href="' + curr.join('/') + '">' + part + '</a>';
}).join(' / ');
}
/**
* Map html `files`, returning an html unordered list.
*/
function html(files, dir, useIcons) {
return '<ul id="files">' + files.map(function(file){
var icon = ''
, classes = [];
if (useIcons && '..' != file) {
icon = icons[extname(file)] || icons.default;
icon = '<img src="data:image/png;base64,' + load(icon) + '" />';
classes.push('icon');
}
return '<li><a href="'
+ join(dir, file)
+ '" class="'
+ classes.join(' ') + '"'
+ ' title="' + file + '">'
+ icon + file + '</a></li>';
}).join('\n') + '</ul>';
}
/**
* Load and cache the given `icon`.
*
* @param {String} icon
* @return {String}
* @api private
*/
function load(icon) {
if (cache[icon]) return cache[icon];
return cache[icon] = fs.readFileSync('/usr/share/node-connect/public/icons/' + icon, 'base64');
}
/**
* Filter "hidden" `files`, aka files
* beginning with a `.`.
*
* @param {Array} files
* @return {Array}
* @api private
*/
function removeHidden(files) {
return files.filter(function(file){
return '.' != file[0];
});
}
/**
* Icon map.
*/
var icons = {
'.js': 'page_white_code_red.png'
, '.c': 'page_white_c.png'
, '.h': 'page_white_h.png'
, '.cc': 'page_white_cplusplus.png'
, '.php': 'page_white_php.png'
, '.rb': 'page_white_ruby.png'
, '.cpp': 'page_white_cplusplus.png'
, '.swf': 'page_white_flash.png'
, '.pdf': 'page_white_acrobat.png'
, 'default': 'page_white.png'
};