|
|
|
|
|
#!/usr/bin/env node
|
|
|
|
|
|
|
|
|
|
|
|
var util = require('util'),
|
|
|
|
|
|
http = require('http'),
|
|
|
|
|
|
fs = require('fs'),
|
|
|
|
|
|
url = require('url'),
|
|
|
|
|
|
events = require('events');
|
|
|
|
|
|
|
|
|
|
|
|
var DEFAULT_PORT = 8000;
|
|
|
|
|
|
var DEFAULT_HOST = 'localhost';
|
|
|
|
|
|
|
|
|
|
|
|
function main(argv) {
|
|
|
|
|
|
new HttpServer({
|
|
|
|
|
|
'GET': createServlet(StaticServlet),
|
|
|
|
|
|
'HEAD': createServlet(StaticServlet)
|
|
|
|
|
|
}).start(Number(argv[2]) || DEFAULT_PORT, argv[3] || DEFAULT_HOST);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
function escapeHtml(value) {
|
|
|
|
|
|
return value.toString().
|
|
|
|
|
|
replace('<', '<').
|
|
|
|
|
|
replace('>', '>').
|
|
|
|
|
|
replace('"', '"');
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
function createServlet(Class) {
|
|
|
|
|
|
var servlet = new Class();
|
|
|
|
|
|
return servlet.handleRequest.bind(servlet);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* An Http server implementation that uses a map of methods to decide
|
|
|
|
|
|
* action routing.
|
|
|
|
|
|
*
|
|
|
|
|
|
* @param {Object} Map of method => Handler function
|
|
|
|
|
|
*/
|
|
|
|
|
|
function HttpServer(handlers) {
|
|
|
|
|
|
this.handlers = handlers;
|
|
|
|
|
|
this.server = http.createServer(this.handleRequest_.bind(this));
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
HttpServer.prototype.start = function(port, host) {
|
|
|
|
|
|
this.port = port;
|
|
|
|
|
|
this.host = host;
|
|
|
|
|
|
this.server.listen(port, host);
|
|
|
|
|
|
util.puts('Http Server running at http://' + host + ':' + port + '/');
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
HttpServer.prototype.parseUrl_ = function(urlString) {
|
|
|
|
|
|
var parsed = url.parse(urlString);
|
|
|
|
|
|
parsed.pathname = url.resolve('/', parsed.pathname);
|
|
|
|
|
|
return url.parse(url.format(parsed), true);
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
HttpServer.prototype.handleRequest_ = function(req, res) {
|
|
|
|
|
|
var logEntry = req.method + ' ' + req.url;
|
|
|
|
|
|
if (req.headers['user-agent']) {
|
|
|
|
|
|
logEntry += ' ' + req.headers['user-agent'];
|
|
|
|
|
|
}
|
|
|
|
|
|
util.puts(logEntry);
|
|
|
|
|
|
req.url = this.parseUrl_(req.url);
|
|
|
|
|
|
var handler = this.handlers[req.method];
|
|
|
|
|
|
if (!handler) {
|
|
|
|
|
|
res.writeHead(501);
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
} else {
|
|
|
|
|
|
handler.call(this, req, res);
|
|
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* Handles static content.
|
|
|
|
|
|
*/
|
|
|
|
|
|
function StaticServlet() {}
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.MimeMap = {
|
|
|
|
|
|
'txt': 'text/plain',
|
|
|
|
|
|
'html': 'text/html',
|
|
|
|
|
|
'css': 'text/css',
|
|
|
|
|
|
'xml': 'application/xml',
|
|
|
|
|
|
'json': 'application/json',
|
|
|
|
|
|
'js': 'application/javascript',
|
|
|
|
|
|
'jpg': 'image/jpeg',
|
|
|
|
|
|
'jpeg': 'image/jpeg',
|
|
|
|
|
|
'gif': 'image/gif',
|
|
|
|
|
|
'png': 'image/png',
|
|
|
|
|
|
'svg': 'image/svg+xml',
|
|
|
|
|
|
'ico': 'image/vnd.microsoft.icon'
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.handleRequest = function(req, res) {
|
|
|
|
|
|
var self = this;
|
|
|
|
|
|
var path = ('./' + req.url.pathname).replace('//','/').replace(/%(..)/g, function(match, hex){
|
|
|
|
|
|
return String.fromCharCode(parseInt(hex, 16));
|
|
|
|
|
|
});
|
|
|
|
|
|
var parts = path.split('/');
|
|
|
|
|
|
if (parts[parts.length-1].charAt(0) === '.')
|
|
|
|
|
|
return self.sendForbidden_(req, res, path);
|
|
|
|
|
|
fs.stat(path, function(err, stat) {
|
|
|
|
|
|
if (err)
|
|
|
|
|
|
return self.sendMissing_(req, res, path);
|
|
|
|
|
|
if (stat.isDirectory())
|
|
|
|
|
|
return self.sendDirectory_(req, res, path);
|
|
|
|
|
|
return self.sendFile_(req, res, path);
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.sendError_ = function(req, res, error) {
|
|
|
|
|
|
res.writeHead(500, {
|
|
|
|
|
|
'Content-Type': 'text/html'
|
|
|
|
|
|
});
|
|
|
|
|
|
res.write('<!doctype html>\n');
|
|
|
|
|
|
res.write('<title>Internal Server Error</title>\n');
|
|
|
|
|
|
res.write('<h1>Internal Server Error</h1>');
|
|
|
|
|
|
res.write('<pre>' + escapeHtml(util.inspect(error)) + '</pre>');
|
|
|
|
|
|
util.puts('500 Internal Server Error');
|
|
|
|
|
|
util.puts(util.inspect(error));
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.sendMissing_ = function(req, res, path) {
|
|
|
|
|
|
path = path.substring(1);
|
|
|
|
|
|
res.writeHead(404, {
|
|
|
|
|
|
'Content-Type': 'text/html'
|
|
|
|
|
|
});
|
|
|
|
|
|
res.write('<!doctype html>\n');
|
|
|
|
|
|
res.write('<title>404 Not Found</title>\n');
|
|
|
|
|
|
res.write('<h1>Not Found</h1>');
|
|
|
|
|
|
res.write(
|
|
|
|
|
|
'<p>The requested URL ' +
|
|
|
|
|
|
escapeHtml(path) +
|
|
|
|
|
|
' was not found on this server.</p>'
|
|
|
|
|
|
);
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
util.puts('404 Not Found: ' + path);
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.sendForbidden_ = function(req, res, path) {
|
|
|
|
|
|
path = path.substring(1);
|
|
|
|
|
|
res.writeHead(403, {
|
|
|
|
|
|
'Content-Type': 'text/html'
|
|
|
|
|
|
});
|
|
|
|
|
|
res.write('<!doctype html>\n');
|
|
|
|
|
|
res.write('<title>403 Forbidden</title>\n');
|
|
|
|
|
|
res.write('<h1>Forbidden</h1>');
|
|
|
|
|
|
res.write(
|
|
|
|
|
|
'<p>You do not have permission to access ' +
|
|
|
|
|
|
escapeHtml(path) + ' on this server.</p>'
|
|
|
|
|
|
);
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
util.puts('403 Forbidden: ' + path);
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.sendRedirect_ = function(req, res, redirectUrl) {
|
|
|
|
|
|
res.writeHead(301, {
|
|
|
|
|
|
'Content-Type': 'text/html',
|
|
|
|
|
|
'Location': redirectUrl
|
|
|
|
|
|
});
|
|
|
|
|
|
res.write('<!doctype html>\n');
|
|
|
|
|
|
res.write('<title>301 Moved Permanently</title>\n');
|
|
|
|
|
|
res.write('<h1>Moved Permanently</h1>');
|
|
|
|
|
|
res.write(
|
|
|
|
|
|
'<p>The document has moved <a href="' +
|
|
|
|
|
|
redirectUrl +
|
|
|
|
|
|
'">here</a>.</p>'
|
|
|
|
|
|
);
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
util.puts('301 Moved Permanently: ' + redirectUrl);
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.sendFile_ = function(req, res, path) {
|
|
|
|
|
|
var self = this;
|
|
|
|
|
|
var file = fs.createReadStream(path);
|
|
|
|
|
|
res.writeHead(200, {
|
|
|
|
|
|
'Content-Type': StaticServlet.
|
|
|
|
|
|
MimeMap[path.split('.').pop()] || 'text/plain'
|
|
|
|
|
|
});
|
|
|
|
|
|
if (req.method === 'HEAD') {
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
} else {
|
|
|
|
|
|
file.on('data', res.write.bind(res));
|
|
|
|
|
|
file.on('close', function() {
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
});
|
|
|
|
|
|
file.on('error', function(error) {
|
|
|
|
|
|
self.sendError_(req, res, error);
|
|
|
|
|
|
});
|
|
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.sendDirectory_ = function(req, res, path) {
|
|
|
|
|
|
var self = this;
|
|
|
|
|
|
if (path.match(/[^\/]$/)) {
|
|
|
|
|
|
req.url.pathname += '/';
|
|
|
|
|
|
var redirectUrl = url.format(url.parse(url.format(req.url)));
|
|
|
|
|
|
return self.sendRedirect_(req, res, redirectUrl);
|
|
|
|
|
|
}
|
|
|
|
|
|
fs.readdir(path, function(err, files) {
|
|
|
|
|
|
if (err)
|
|
|
|
|
|
return self.sendError_(req, res, error);
|
|
|
|
|
|
|
|
|
|
|
|
if (!files.length)
|
|
|
|
|
|
return self.writeDirectoryIndex_(req, res, path, []);
|
|
|
|
|
|
|
|
|
|
|
|
var remaining = files.length;
|
|
|
|
|
|
files.forEach(function(fileName, index) {
|
|
|
|
|
|
fs.stat(path + '/' + fileName, function(err, stat) {
|
|
|
|
|
|
if (err)
|
|
|
|
|
|
return self.sendError_(req, res, err);
|
|
|
|
|
|
if (stat.isDirectory()) {
|
|
|
|
|
|
files[index] = fileName + '/';
|
|
|
|
|
|
}
|
|
|
|
|
|
if (!(--remaining))
|
|
|
|
|
|
return self.writeDirectoryIndex_(req, res, path, files);
|
|
|
|
|
|
});
|
|
|
|
|
|
});
|
|
|
|
|
|
});
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
StaticServlet.prototype.writeDirectoryIndex_ = function(req, res, path, files) {
|
|
|
|
|
|
path = path.substring(1);
|
|
|
|
|
|
res.writeHead(200, {
|
|
|
|
|
|
'Content-Type': 'text/html'
|
|
|
|
|
|
});
|
|
|
|
|
|
if (req.method === 'HEAD') {
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
return;
|
|
|
|
|
|
}
|
|
|
|
|
|
res.write('<!doctype html>\n');
|
|
|
|
|
|
res.write('<title>' + escapeHtml(path) + '</title>\n');
|
|
|
|
|
|
res.write('<style>\n');
|
|
|
|
|
|
res.write(' ol { list-style-type: none; font-size: 1.2em; }\n');
|
|
|
|
|
|
res.write('</style>\n');
|
|
|
|
|
|
res.write('<h1>Directory: ' + escapeHtml(path) + '</h1>');
|
|
|
|
|
|
res.write('<ol>');
|
|
|
|
|
|
files.forEach(function(fileName) {
|
|
|
|
|
|
if (fileName.charAt(0) !== '.') {
|
|
|
|
|
|
res.write('<li><a href="' +
|
|
|
|
|
|
escapeHtml(fileName) + '">' +
|
|
|
|
|
|
escapeHtml(fileName) + '</a></li>');
|
|
|
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
res.write('</ol>');
|
|
|
|
|
|
res.end();
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
// Must be last,
|
|
|
|
|
|
main(process.argv);
|
