1 | var fs = require('fs');
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2 | var qs = require('qs');
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3 | var path = require('path');
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4 | var util = require('util');
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5 | var http = require('http');
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6 | var https = require('https');
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7 | var events = require('events');
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8 | var parse = require('url').parse;
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9 | var debug = require('debug')('tinylr:server');
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10 | var Client = require('./client');
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11 |
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12 |
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13 | var bodyParser = require('body-parser').json()
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14 | var queryParser = require('./middleware/query')();
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15 |
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16 | var config = require('../package.json');
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17 |
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18 | function Server(options) {
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19 | options = this.options = options || {};
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20 | events.EventEmitter.call(this);
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21 |
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22 | options.livereload = options.livereload || require.resolve('livereload-js/dist/livereload.js');
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23 | options.port = parseInt(options.port || 35729, 10);
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24 |
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25 | this.on('GET /', this.index.bind(this));
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26 | this.on('GET /changed', this.changed.bind(this));
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27 | this.on('POST /changed', this.changed.bind(this));
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28 | this.on('GET /livereload.js', this.livereload.bind(this));
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29 | this.on('GET /kill', this.close.bind(this));
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30 |
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31 | if(options.errorListener) {
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32 | this.errorListener = options.errorListener;
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33 | }
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34 |
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35 | this.clients = {};
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36 | this.configure(options.app);
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37 | }
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38 |
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39 | module.exports = Server;
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40 |
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41 | util.inherits(Server, events.EventEmitter);
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42 |
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43 | Server.prototype.configure = function configure(app) {
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44 | var self = this;
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45 | debug('Configuring %s', app ? 'connect / express application' : 'HTTP server');
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46 |
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47 | if (!app) {
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48 | if ((this.options.key && this.options.cert) || this.options.pfx) {
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49 | this.server = https.createServer(this.options, this.handler.bind(this));
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50 | } else {
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51 | this.server = http.createServer(this.handler.bind(this));
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52 | }
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53 | this.server.on('upgrade', this.websocketify.bind(this));
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54 | this.server.on('error', function() {
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55 | self.error.apply(self, arguments);
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56 | });
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57 | return this;
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58 | }
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59 |
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60 | this.app = app;
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61 |
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62 | this.app.listen = function(port, done) {
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63 | done = done || function() {};
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64 | if (port !== self.options.port) {
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65 | debug('Warn: LiveReload port is not standard (%d). You are listening on %d', self.options.port, port);
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66 | debug('You\'ll need to rely on the LiveReload snippet');
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67 | debug('> http://feedback.livereload.com/knowledgebase/articles/86180-how-do-i-add-the-script-tag-manually-');
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68 | }
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69 |
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70 | var srv = self.server = http.createServer(app);
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71 | srv.on('upgrade', self.websocketify.bind(self));
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72 | srv.on('error', function() {
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73 | self.error.apply(self, arguments);
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74 | });
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75 | srv.on('close', self.close.bind(self));
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76 | return srv.listen(port, done);
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77 | };
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78 |
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79 | return this;
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80 | };
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81 |
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82 | Server.prototype.handler = function handler(req, res, next) {
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83 | var self = this;
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84 | var middleware = typeof next === 'function';
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85 | debug('LiveReload handler %s (middleware: %s)', req.url, middleware ? 'on' : 'off');
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86 |
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87 | this.parse(req, res, function(err) {
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88 | debug('query parsed', req.body, err);
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89 | if (err) return next(err);
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90 | self.handle(req, res, next);
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91 | });
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92 |
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93 |
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94 |
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95 |
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96 |
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97 |
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98 |
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99 |
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100 | return this;
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101 | };
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102 |
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103 |
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104 |
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105 |
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106 | Server.prototype.parse = function(req, res, next) {
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107 | debug('Parse', req.body, req.query);
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108 | bodyParser(req, res, function(err) {
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109 | debug('Body parsed', req.body);
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110 | if (err) return next(err);
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111 |
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112 | queryParser(req, res, next);
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113 | });
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114 | };
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115 |
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116 | Server.prototype.handle = function handle(req, res, next) {
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117 | var url = parse(req.url);
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118 | debug('Request:', req.method, url.href);
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119 | var middleware = typeof next === 'function';
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120 |
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121 |
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122 | var route = req.method + ' ' + url.pathname;
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123 | var respond = this.emit(route, req, res);
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124 | if (respond) return;
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125 | if (!middleware) {
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126 |
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127 | res.setHeader('Content-Type', 'application/json');
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128 | } else {
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129 |
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130 | return next();
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131 | }
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132 |
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133 | res.writeHead(404);
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134 | res.write(JSON.stringify({
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135 | error: 'not_found',
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136 | reason: 'no such route'
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137 | }));
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138 | res.end();
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139 | };
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140 |
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141 | Server.prototype.websocketify = function websocketify(req, socket, head) {
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142 | var self = this;
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143 | var client = new Client(req, socket, head, this.options);
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144 | this.clients[client.id] = client;
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145 |
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146 | debug('New LiveReload connection (id: %s)', client.id);
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147 | client.on('end', function() {
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148 | debug('Destroy client %s (url: %s)', client.id, client.url);
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149 | delete self.clients[client.id];
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150 | });
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151 | };
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152 |
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153 | Server.prototype.listen = function listen(port, host, fn) {
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154 | port = parseInt(port || 35729, 10);
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155 | this.port = port;
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156 |
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157 | if (typeof host === 'function') {
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158 | fn = host;
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159 | host = undefined;
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160 | }
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161 |
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162 | this.server.listen(port, host, fn);
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163 | };
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164 |
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165 | Server.prototype.close = function close(req, res) {
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166 | Object.keys(this.clients).forEach(function(id) {
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167 | this.clients[id].close();
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168 | }, this);
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169 |
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170 |
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171 | if (this.server._handle) this.server.close(this.emit.bind(this, 'close'));
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172 |
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173 | if (res) res.end();
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174 | };
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175 |
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176 | Server.prototype.error = function error(e) {
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177 | if(this.errorListener) {
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178 | this.errorListener(e);
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179 | return
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180 | }
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181 |
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182 | console.error();
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183 | console.error('... Uhoh. Got error %s ...', e.message);
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184 | console.error(e.stack);
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185 |
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186 | if (e.code !== 'EADDRINUSE') return;
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187 | console.error();
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188 | console.error('You already have a server listening on %s', this.port);
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189 | console.error('You should stop it and try again.');
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190 | console.error();
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191 | };
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192 |
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193 |
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194 |
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195 | Server.prototype.livereload = function livereload(req, res) {
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196 | res.setHeader('Content-Type', 'application/javascript');
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197 | fs.createReadStream(this.options.livereload).pipe(res);
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198 | };
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199 |
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200 | Server.prototype.changed = function changed(req, res) {
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201 | var files = this.param('files', req);
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202 |
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203 | debug('Changed event (Files: %s)', files.join(' '));
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204 | var clients = this.notifyClients(files);
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205 |
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206 | if (!res) return;
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207 |
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208 | res.setHeader('Content-Type', 'application/json');
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209 | res.write(JSON.stringify({
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210 | clients: clients,
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211 | files: files
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212 | }));
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213 |
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214 | res.end();
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215 | };
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216 |
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217 | Server.prototype.notifyClients = function notifyClients(files) {
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218 | var clients = Object.keys(this.clients).map(function(id) {
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219 | var client = this.clients[id];
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220 | debug('Reloading client %s (url: %s)', client.id, client.url);
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221 | client.reload(files);
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222 | return {
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223 | id: client.id,
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224 | url: client.url
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225 | };
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226 | }, this);
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227 |
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228 | return clients;
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229 | };
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230 |
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231 |
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232 | Server.prototype.param = function _param(name, req) {
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233 | var param;
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234 | if (req.body && req.body[name]) param = req.body.files;
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235 | else if (req.params && req.params[name]) param = req.params.files;
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236 | else if (req.query && req.query[name]) param= req.query.files;
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237 |
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238 |
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239 | param = Array.isArray(param) ? param :
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240 | typeof param === 'string' ? param.split(/[\s,]/) :
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241 | [];
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242 |
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243 | debug('param %s', name, req.body, req.params, req.query, param);
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244 | return param;
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245 | };
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246 |
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247 | Server.prototype.index = function index(req, res) {
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248 | res.setHeader('Content-Type', 'application/json');
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249 | res.write(JSON.stringify({
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250 | tinylr: 'Welcome',
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251 | version: config.version
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252 | }));
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253 |
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254 | res.end();
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255 | };
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