source: trip-planner-front/node_modules/serve-index/index.js@ 76712b2

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1/*!
2 * serve-index
3 * Copyright(c) 2011 Sencha Inc.
4 * Copyright(c) 2011 TJ Holowaychuk
5 * Copyright(c) 2014-2015 Douglas Christopher Wilson
6 * MIT Licensed
7 */
8
9'use strict';
10
11/**
12 * Module dependencies.
13 * @private
14 */
15
16var accepts = require('accepts');
17var createError = require('http-errors');
18var debug = require('debug')('serve-index');
19var escapeHtml = require('escape-html');
20var fs = require('fs')
21 , path = require('path')
22 , normalize = path.normalize
23 , sep = path.sep
24 , extname = path.extname
25 , join = path.join;
26var Batch = require('batch');
27var mime = require('mime-types');
28var parseUrl = require('parseurl');
29var resolve = require('path').resolve;
30
31/**
32 * Module exports.
33 * @public
34 */
35
36module.exports = serveIndex;
37
38/*!
39 * Icon cache.
40 */
41
42var cache = {};
43
44/*!
45 * Default template.
46 */
47
48var defaultTemplate = join(__dirname, 'public', 'directory.html');
49
50/*!
51 * Stylesheet.
52 */
53
54var defaultStylesheet = join(__dirname, 'public', 'style.css');
55
56/**
57 * Media types and the map for content negotiation.
58 */
59
60var mediaTypes = [
61 'text/html',
62 'text/plain',
63 'application/json'
64];
65
66var mediaType = {
67 'text/html': 'html',
68 'text/plain': 'plain',
69 'application/json': 'json'
70};
71
72/**
73 * Serve directory listings with the given `root` path.
74 *
75 * See Readme.md for documentation of options.
76 *
77 * @param {String} root
78 * @param {Object} options
79 * @return {Function} middleware
80 * @public
81 */
82
83function serveIndex(root, options) {
84 var opts = options || {};
85
86 // root required
87 if (!root) {
88 throw new TypeError('serveIndex() root path required');
89 }
90
91 // resolve root to absolute and normalize
92 var rootPath = normalize(resolve(root) + sep);
93
94 var filter = opts.filter;
95 var hidden = opts.hidden;
96 var icons = opts.icons;
97 var stylesheet = opts.stylesheet || defaultStylesheet;
98 var template = opts.template || defaultTemplate;
99 var view = opts.view || 'tiles';
100
101 return function (req, res, next) {
102 if (req.method !== 'GET' && req.method !== 'HEAD') {
103 res.statusCode = 'OPTIONS' === req.method ? 200 : 405;
104 res.setHeader('Allow', 'GET, HEAD, OPTIONS');
105 res.setHeader('Content-Length', '0');
106 res.end();
107 return;
108 }
109
110 // parse URLs
111 var url = parseUrl(req);
112 var originalUrl = parseUrl.original(req);
113 var dir = decodeURIComponent(url.pathname);
114 var originalDir = decodeURIComponent(originalUrl.pathname);
115
116 // join / normalize from root dir
117 var path = normalize(join(rootPath, dir));
118
119 // null byte(s), bad request
120 if (~path.indexOf('\0')) return next(createError(400));
121
122 // malicious path
123 if ((path + sep).substr(0, rootPath.length) !== rootPath) {
124 debug('malicious path "%s"', path);
125 return next(createError(403));
126 }
127
128 // determine ".." display
129 var showUp = normalize(resolve(path) + sep) !== rootPath;
130
131 // check if we have a directory
132 debug('stat "%s"', path);
133 fs.stat(path, function(err, stat){
134 if (err && err.code === 'ENOENT') {
135 return next();
136 }
137
138 if (err) {
139 err.status = err.code === 'ENAMETOOLONG'
140 ? 414
141 : 500;
142 return next(err);
143 }
144
145 if (!stat.isDirectory()) return next();
146
147 // fetch files
148 debug('readdir "%s"', path);
149 fs.readdir(path, function(err, files){
150 if (err) return next(err);
151 if (!hidden) files = removeHidden(files);
152 if (filter) files = files.filter(function(filename, index, list) {
153 return filter(filename, index, list, path);
154 });
155 files.sort();
156
157 // content-negotiation
158 var accept = accepts(req);
159 var type = accept.type(mediaTypes);
160
161 // not acceptable
162 if (!type) return next(createError(406));
163 serveIndex[mediaType[type]](req, res, files, next, originalDir, showUp, icons, path, view, template, stylesheet);
164 });
165 });
166 };
167};
168
169/**
170 * Respond with text/html.
171 */
172
173serveIndex.html = function _html(req, res, files, next, dir, showUp, icons, path, view, template, stylesheet) {
174 var render = typeof template !== 'function'
175 ? createHtmlRender(template)
176 : template
177
178 if (showUp) {
179 files.unshift('..');
180 }
181
182 // stat all files
183 stat(path, files, function (err, stats) {
184 if (err) return next(err);
185
186 // combine the stats into the file list
187 var fileList = files.map(function (file, i) {
188 return { name: file, stat: stats[i] };
189 });
190
191 // sort file list
192 fileList.sort(fileSort);
193
194 // read stylesheet
195 fs.readFile(stylesheet, 'utf8', function (err, style) {
196 if (err) return next(err);
197
198 // create locals for rendering
199 var locals = {
200 directory: dir,
201 displayIcons: Boolean(icons),
202 fileList: fileList,
203 path: path,
204 style: style,
205 viewName: view
206 };
207
208 // render html
209 render(locals, function (err, body) {
210 if (err) return next(err);
211 send(res, 'text/html', body)
212 });
213 });
214 });
215};
216
217/**
218 * Respond with application/json.
219 */
220
221serveIndex.json = function _json(req, res, files) {
222 send(res, 'application/json', JSON.stringify(files))
223};
224
225/**
226 * Respond with text/plain.
227 */
228
229serveIndex.plain = function _plain(req, res, files) {
230 send(res, 'text/plain', (files.join('\n') + '\n'))
231};
232
233/**
234 * Map html `files`, returning an html unordered list.
235 * @private
236 */
237
238function createHtmlFileList(files, dir, useIcons, view) {
239 var html = '<ul id="files" class="view-' + escapeHtml(view) + '">'
240 + (view == 'details' ? (
241 '<li class="header">'
242 + '<span class="name">Name</span>'
243 + '<span class="size">Size</span>'
244 + '<span class="date">Modified</span>'
245 + '</li>') : '');
246
247 html += files.map(function (file) {
248 var classes = [];
249 var isDir = file.stat && file.stat.isDirectory();
250 var path = dir.split('/').map(function (c) { return encodeURIComponent(c); });
251
252 if (useIcons) {
253 classes.push('icon');
254
255 if (isDir) {
256 classes.push('icon-directory');
257 } else {
258 var ext = extname(file.name);
259 var icon = iconLookup(file.name);
260
261 classes.push('icon');
262 classes.push('icon-' + ext.substring(1));
263
264 if (classes.indexOf(icon.className) === -1) {
265 classes.push(icon.className);
266 }
267 }
268 }
269
270 path.push(encodeURIComponent(file.name));
271
272 var date = file.stat && file.name !== '..'
273 ? file.stat.mtime.toLocaleDateString() + ' ' + file.stat.mtime.toLocaleTimeString()
274 : '';
275 var size = file.stat && !isDir
276 ? file.stat.size
277 : '';
278
279 return '<li><a href="'
280 + escapeHtml(normalizeSlashes(normalize(path.join('/'))))
281 + '" class="' + escapeHtml(classes.join(' ')) + '"'
282 + ' title="' + escapeHtml(file.name) + '">'
283 + '<span class="name">' + escapeHtml(file.name) + '</span>'
284 + '<span class="size">' + escapeHtml(size) + '</span>'
285 + '<span class="date">' + escapeHtml(date) + '</span>'
286 + '</a></li>';
287 }).join('\n');
288
289 html += '</ul>';
290
291 return html;
292}
293
294/**
295 * Create function to render html.
296 */
297
298function createHtmlRender(template) {
299 return function render(locals, callback) {
300 // read template
301 fs.readFile(template, 'utf8', function (err, str) {
302 if (err) return callback(err);
303
304 var body = str
305 .replace(/\{style\}/g, locals.style.concat(iconStyle(locals.fileList, locals.displayIcons)))
306 .replace(/\{files\}/g, createHtmlFileList(locals.fileList, locals.directory, locals.displayIcons, locals.viewName))
307 .replace(/\{directory\}/g, escapeHtml(locals.directory))
308 .replace(/\{linked-path\}/g, htmlPath(locals.directory));
309
310 callback(null, body);
311 });
312 };
313}
314
315/**
316 * Sort function for with directories first.
317 */
318
319function fileSort(a, b) {
320 // sort ".." to the top
321 if (a.name === '..' || b.name === '..') {
322 return a.name === b.name ? 0
323 : a.name === '..' ? -1 : 1;
324 }
325
326 return Number(b.stat && b.stat.isDirectory()) - Number(a.stat && a.stat.isDirectory()) ||
327 String(a.name).toLocaleLowerCase().localeCompare(String(b.name).toLocaleLowerCase());
328}
329
330/**
331 * Map html `dir`, returning a linked path.
332 */
333
334function htmlPath(dir) {
335 var parts = dir.split('/');
336 var crumb = new Array(parts.length);
337
338 for (var i = 0; i < parts.length; i++) {
339 var part = parts[i];
340
341 if (part) {
342 parts[i] = encodeURIComponent(part);
343 crumb[i] = '<a href="' + escapeHtml(parts.slice(0, i + 1).join('/')) + '">' + escapeHtml(part) + '</a>';
344 }
345 }
346
347 return crumb.join(' / ');
348}
349
350/**
351 * Get the icon data for the file name.
352 */
353
354function iconLookup(filename) {
355 var ext = extname(filename);
356
357 // try by extension
358 if (icons[ext]) {
359 return {
360 className: 'icon-' + ext.substring(1),
361 fileName: icons[ext]
362 };
363 }
364
365 var mimetype = mime.lookup(ext);
366
367 // default if no mime type
368 if (mimetype === false) {
369 return {
370 className: 'icon-default',
371 fileName: icons.default
372 };
373 }
374
375 // try by mime type
376 if (icons[mimetype]) {
377 return {
378 className: 'icon-' + mimetype.replace('/', '-'),
379 fileName: icons[mimetype]
380 };
381 }
382
383 var suffix = mimetype.split('+')[1];
384
385 if (suffix && icons['+' + suffix]) {
386 return {
387 className: 'icon-' + suffix,
388 fileName: icons['+' + suffix]
389 };
390 }
391
392 var type = mimetype.split('/')[0];
393
394 // try by type only
395 if (icons[type]) {
396 return {
397 className: 'icon-' + type,
398 fileName: icons[type]
399 };
400 }
401
402 return {
403 className: 'icon-default',
404 fileName: icons.default
405 };
406}
407
408/**
409 * Load icon images, return css string.
410 */
411
412function iconStyle(files, useIcons) {
413 if (!useIcons) return '';
414 var i;
415 var list = [];
416 var rules = {};
417 var selector;
418 var selectors = {};
419 var style = '';
420
421 for (i = 0; i < files.length; i++) {
422 var file = files[i];
423
424 var isDir = file.stat && file.stat.isDirectory();
425 var icon = isDir
426 ? { className: 'icon-directory', fileName: icons.folder }
427 : iconLookup(file.name);
428 var iconName = icon.fileName;
429
430 selector = '#files .' + icon.className + ' .name';
431
432 if (!rules[iconName]) {
433 rules[iconName] = 'background-image: url(data:image/png;base64,' + load(iconName) + ');'
434 selectors[iconName] = [];
435 list.push(iconName);
436 }
437
438 if (selectors[iconName].indexOf(selector) === -1) {
439 selectors[iconName].push(selector);
440 }
441 }
442
443 for (i = 0; i < list.length; i++) {
444 iconName = list[i];
445 style += selectors[iconName].join(',\n') + ' {\n ' + rules[iconName] + '\n}\n';
446 }
447
448 return style;
449}
450
451/**
452 * Load and cache the given `icon`.
453 *
454 * @param {String} icon
455 * @return {String}
456 * @api private
457 */
458
459function load(icon) {
460 if (cache[icon]) return cache[icon];
461 return cache[icon] = fs.readFileSync(__dirname + '/public/icons/' + icon, 'base64');
462}
463
464/**
465 * Normalizes the path separator from system separator
466 * to URL separator, aka `/`.
467 *
468 * @param {String} path
469 * @return {String}
470 * @api private
471 */
472
473function normalizeSlashes(path) {
474 return path.split(sep).join('/');
475};
476
477/**
478 * Filter "hidden" `files`, aka files
479 * beginning with a `.`.
480 *
481 * @param {Array} files
482 * @return {Array}
483 * @api private
484 */
485
486function removeHidden(files) {
487 return files.filter(function(file){
488 return '.' != file[0];
489 });
490}
491
492/**
493 * Send a response.
494 * @private
495 */
496
497function send (res, type, body) {
498 // security header for content sniffing
499 res.setHeader('X-Content-Type-Options', 'nosniff')
500
501 // standard headers
502 res.setHeader('Content-Type', type + '; charset=utf-8')
503 res.setHeader('Content-Length', Buffer.byteLength(body, 'utf8'))
504
505 // body
506 res.end(body, 'utf8')
507}
508
509/**
510 * Stat all files and return array of stat
511 * in same order.
512 */
513
514function stat(dir, files, cb) {
515 var batch = new Batch();
516
517 batch.concurrency(10);
518
519 files.forEach(function(file){
520 batch.push(function(done){
521 fs.stat(join(dir, file), function(err, stat){
522 if (err && err.code !== 'ENOENT') return done(err);
523
524 // pass ENOENT as null stat, not error
525 done(null, stat || null);
526 });
527 });
528 });
529
530 batch.end(cb);
531}
532
533/**
534 * Icon map.
535 */
536
537var icons = {
538 // base icons
539 'default': 'page_white.png',
540 'folder': 'folder.png',
541
542 // generic mime type icons
543 'image': 'image.png',
544 'text': 'page_white_text.png',
545 'video': 'film.png',
546
547 // generic mime suffix icons
548 '+json': 'page_white_code.png',
549 '+xml': 'page_white_code.png',
550 '+zip': 'box.png',
551
552 // specific mime type icons
553 'application/font-woff': 'font.png',
554 'application/javascript': 'page_white_code_red.png',
555 'application/json': 'page_white_code.png',
556 'application/msword': 'page_white_word.png',
557 'application/pdf': 'page_white_acrobat.png',
558 'application/postscript': 'page_white_vector.png',
559 'application/rtf': 'page_white_word.png',
560 'application/vnd.ms-excel': 'page_white_excel.png',
561 'application/vnd.ms-powerpoint': 'page_white_powerpoint.png',
562 'application/vnd.oasis.opendocument.presentation': 'page_white_powerpoint.png',
563 'application/vnd.oasis.opendocument.spreadsheet': 'page_white_excel.png',
564 'application/vnd.oasis.opendocument.text': 'page_white_word.png',
565 'application/x-7z-compressed': 'box.png',
566 'application/x-sh': 'application_xp_terminal.png',
567 'application/x-font-ttf': 'font.png',
568 'application/x-msaccess': 'page_white_database.png',
569 'application/x-shockwave-flash': 'page_white_flash.png',
570 'application/x-sql': 'page_white_database.png',
571 'application/x-tar': 'box.png',
572 'application/x-xz': 'box.png',
573 'application/xml': 'page_white_code.png',
574 'application/zip': 'box.png',
575 'image/svg+xml': 'page_white_vector.png',
576 'text/css': 'page_white_code.png',
577 'text/html': 'page_white_code.png',
578 'text/less': 'page_white_code.png',
579
580 // other, extension-specific icons
581 '.accdb': 'page_white_database.png',
582 '.apk': 'box.png',
583 '.app': 'application_xp.png',
584 '.as': 'page_white_actionscript.png',
585 '.asp': 'page_white_code.png',
586 '.aspx': 'page_white_code.png',
587 '.bat': 'application_xp_terminal.png',
588 '.bz2': 'box.png',
589 '.c': 'page_white_c.png',
590 '.cab': 'box.png',
591 '.cfm': 'page_white_coldfusion.png',
592 '.clj': 'page_white_code.png',
593 '.cc': 'page_white_cplusplus.png',
594 '.cgi': 'application_xp_terminal.png',
595 '.cpp': 'page_white_cplusplus.png',
596 '.cs': 'page_white_csharp.png',
597 '.db': 'page_white_database.png',
598 '.dbf': 'page_white_database.png',
599 '.deb': 'box.png',
600 '.dll': 'page_white_gear.png',
601 '.dmg': 'drive.png',
602 '.docx': 'page_white_word.png',
603 '.erb': 'page_white_ruby.png',
604 '.exe': 'application_xp.png',
605 '.fnt': 'font.png',
606 '.gam': 'controller.png',
607 '.gz': 'box.png',
608 '.h': 'page_white_h.png',
609 '.ini': 'page_white_gear.png',
610 '.iso': 'cd.png',
611 '.jar': 'box.png',
612 '.java': 'page_white_cup.png',
613 '.jsp': 'page_white_cup.png',
614 '.lua': 'page_white_code.png',
615 '.lz': 'box.png',
616 '.lzma': 'box.png',
617 '.m': 'page_white_code.png',
618 '.map': 'map.png',
619 '.msi': 'box.png',
620 '.mv4': 'film.png',
621 '.otf': 'font.png',
622 '.pdb': 'page_white_database.png',
623 '.php': 'page_white_php.png',
624 '.pl': 'page_white_code.png',
625 '.pkg': 'box.png',
626 '.pptx': 'page_white_powerpoint.png',
627 '.psd': 'page_white_picture.png',
628 '.py': 'page_white_code.png',
629 '.rar': 'box.png',
630 '.rb': 'page_white_ruby.png',
631 '.rm': 'film.png',
632 '.rom': 'controller.png',
633 '.rpm': 'box.png',
634 '.sass': 'page_white_code.png',
635 '.sav': 'controller.png',
636 '.scss': 'page_white_code.png',
637 '.srt': 'page_white_text.png',
638 '.tbz2': 'box.png',
639 '.tgz': 'box.png',
640 '.tlz': 'box.png',
641 '.vb': 'page_white_code.png',
642 '.vbs': 'page_white_code.png',
643 '.xcf': 'page_white_picture.png',
644 '.xlsx': 'page_white_excel.png',
645 '.yaws': 'page_white_code.png'
646};
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