RLGWebD: webtty.js annotate

annotate webtty.js @ 170:50e4c9feeac2

RLGWebD: fix simultaneous player bug. Multiple games can now run at the same time, and data will be sent to the proper place. The interaction of multiple players with watchers has not yet been tested.

author	John "Elwin" Edwards
date	Fri, 09 Jan 2015 13:06:41 -0500
parents	c4a32007d2dc
children	5372f1f97cf5

rev	line source
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	1 #!/usr/bin/env node
137 f14e92f6d955 webtty: don't hardcode paths. John "Elwin" Edwards parents: 86 diff changeset	2
f14e92f6d955 webtty: don't hardcode paths. John "Elwin" Edwards parents: 86 diff changeset	3 var localModules = '/usr/lib/node_modules/';
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	4 var http = require('http');
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	5 var url = require('url');
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	6 var path = require('path');
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	7 var fs = require('fs');
137 f14e92f6d955 webtty: don't hardcode paths. John "Elwin" Edwards parents: 86 diff changeset	8 var pty = require(path.join(localModules, "pty.js"));
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	9 var child_process = require("child_process");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	10 var webSocketServer = require(path.join(localModules, "websocket")).server;
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	11
137 f14e92f6d955 webtty: don't hardcode paths. John "Elwin" Edwards parents: 86 diff changeset	12 var serveStaticRoot = fs.realpathSync(".");
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	13 var sessions = {};
153 c4a32007d2dc WebTTY: remove polling. John "Elwin" Edwards parents: 140 diff changeset	14 var nsessid = 0;
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	15
2 98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	16 var env_dontuse = {"TMUX": true, "TMUX_PANE": true};
98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	17
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	18 /* Constructor for TermSessions. Note that it opens the terminal and
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	19 * adds itself to the sessions dict.
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	20 */
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	21 function TermSessionWS(conn, h, w) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	22 var ss = this;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	23 /* Set up the sizes. */
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	24 w = Math.floor(Number(w));
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	25 if (!(w > 0 && w < 256))
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	26 w = 80;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	27 this.w = w;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	28 h = Math.floor(Number(h));
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	29 if (!(h > 0 && h < 256))
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	30 h = 25;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	31 this.h = h;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	32 this.conn = conn;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	33 /* Customize the environment. */
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	34 var childenv = {};
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	35 for (var key in process.env) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	36 if (!(key in env_dontuse))
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	37 childenv[key] = process.env[key];
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	38 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	39 var spawnopts = {"env": childenv, "cwd": process.env["HOME"],
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	40 "rows": this.h, "cols": this.w};
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	41 this.term = pty.spawn("bash", [], spawnopts);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	42 this.alive = true;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	43 this.term.on("data", function (datastr) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	44 var buf = new Buffer(datastr);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	45 if (ss.conn.connected)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	46 ss.conn.sendUTF(JSON.stringify({"t": "d", "d": buf.toString("hex")}));
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	47 });
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	48 this.term.on("exit", function () {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	49 ss.alive = false;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	50 /* Wait for all the data to get collected */
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	51 setTimeout(ss.cleanup, 1000);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	52 });
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	53 this.conn.on("message", function (msg) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	54 try {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	55 var msgObj = JSON.parse(msg.utf8Data);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	56 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	57 catch (e) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	58 return;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	59 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	60 if (msgObj.t == "d") {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	61 var hexstr = msgObj["d"].replace(/[^0-9a-f]/gi, "");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	62 if (hexstr.length % 2 != 0) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	63 return;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	64 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	65 var keybuf = new Buffer(hexstr, "hex");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	66 ss.term.write(keybuf);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	67 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	68 });
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	69 this.conn.on("close", function (msg) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	70 if (ss.alive)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	71 ss.term.kill('SIGHUP');
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	72 console.log("WebSocket connection closed.");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	73 });
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	74 this.cleanup = function () {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	75 /* Call this when the child is dead. */
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	76 if (ss.alive)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	77 return;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	78 if (ss.conn.connected) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	79 ss.conn.sendUTF(JSON.stringify({"t": "q"}));
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	80 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	81 };
153 c4a32007d2dc WebTTY: remove polling. John "Elwin" Edwards parents: 140 diff changeset	82 sessions[nsessid++] = this;
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	83 this.conn.sendUTF(JSON.stringify({"t": "l", "w": w, "h": h}));
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	84 console.log("New WebSocket connection.");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	85 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	86
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	87 function randkey() {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	88 rnum = Math.floor(Math.random() * 65536 * 65536);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	89 hexstr = rnum.toString(16);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	90 while (hexstr.length < 8)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	91 hexstr = "0" + hexstr;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	92 return hexstr;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	93 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	94
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	95 /* Returns a list of the cookies in the request, obviously. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	96 function getCookies(req) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	97 cookies = [];
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	98 if ("cookie" in req.headers) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	99 cookstrs = req.headers["cookie"].split("; ");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	100 for (var i = 0; i < cookstrs.length; i++) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	101 eqsign = cookstrs[i].indexOf("=");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	102 if (eqsign > 0) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	103 name = cookstrs[i].slice(0, eqsign).toLowerCase();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	104 val = cookstrs[i].slice(eqsign + 1);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	105 cookies[name] = val;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	106 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	107 else if (eqsign < 0)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	108 cookies[cookstrs[i]] = null;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	109 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	110 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	111 return cookies;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	112 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	113
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	114 function urlDec(encstr) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	115 var decstr = "";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	116 var tnum;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	117 for (var i = 0; i < encstr.length; i++)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	118 {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	119 if (encstr.charAt(i) == "+")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	120 decstr += " ";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	121 else if (encstr.charAt(i) == "%")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	122 {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	123 tnum = Number("0x" + encstr.slice(i + 1, 2));
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	124 if (!isNaN(tnum) && tnum >= 0)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	125 decstr += String.fromCharCode(tnum);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	126 i += 2;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	127 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	128 else
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	129 decstr += encstr.charAt(i);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	130 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	131 return decstr;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	132 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	133
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	134 /* Returns the contents of a form */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	135 function getFormValues(formtext) {
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	136 var jsonobj;
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	137 try {
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	138 jsonobj = JSON.parse(formtext);
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	139 } catch (e) {
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	140 if (e instanceof SyntaxError)
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	141 return null;
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	142 }
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	143 return jsonobj;
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	144 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	145
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	146 function serveStatic(req, res, fname) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	147 var nname = path.normalize(fname);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	148 if (nname == "" \|\| nname == "/")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	149 nname = "index.html";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	150 if (nname.match(/\/$/))
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	151 path.join(nname, "index.html"); /* it was a directory */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	152 var realname = path.join(serveStaticRoot, nname);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	153 var extension = path.extname(realname);
81 e4773ac5d4d5 Switch to node v0.8. John "Elwin" Edwards <elwin@sdf.org> parents: 15 diff changeset	154 fs.exists(realname, function (exists) {
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	155 var resheaders = {};
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	156 if (!exists \|\| !extension \|\| extension == ".html")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	157 resheaders["Content-Type"] = "text/html";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	158 else if (extension == ".png")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	159 resheaders["Content-Type"] = "image/png";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	160 else if (extension == ".css")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	161 resheaders["Content-Type"] = "text/css";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	162 else if (extension == ".js")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	163 resheaders["Content-Type"] = "text/javascript";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	164 else if (extension == ".svg")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	165 resheaders["Content-Type"] = "image/svg+xml";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	166 else
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	167 resheaders["Content-Type"] = "application/octet-stream";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	168 if (exists) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	169 /* Not nice, not sensible. First see if it's readable, then respond
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	170 * 200 or 500. Don't throw nasty errors. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	171 res.writeHead(200, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	172 fs.readFile(realname, function (error, data) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	173 if (error) throw error;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	174 res.write(data);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	175 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	176 });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	177 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	178 else {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	179 res.writeHead(404, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	180 res.write("<html><head><title>" + nname + "</title></head>\n<body><h1>" + nname + " Not Found</h1></body></html>\n");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	181 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	182 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	183 });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	184 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	185 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	186
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	187 var errorcodes = [ "Generic Error", "Not logged in", "Invalid data" ];
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	188
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	189 function sendError(res, ecode) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	190 res.writeHead(200, { "Content-Type": "text/plain" });
11 481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	191 if (!(ecode >= 0 && ecode < errorcodes.length))
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	192 ecode = 0;
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	193 res.write(JSON.stringify({"t": "E", "c": ecode, "s": errorcodes[ecode]}));
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	194 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	195 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	196
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	197 function handler(req, res) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	198 /* default headers for the response */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	199 var resheaders = {'Content-Type': 'text/html'};
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	200 /* The request body will be added to this as it arrives. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	201 var reqbody = "";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	202 var formdata;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	203
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	204 /* Register a listener to get the body. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	205 function moredata(chunk) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	206 reqbody += chunk;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	207 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	208 req.on('data', moredata);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	209
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	210 /* This will send the response once the whole request is here. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	211 function respond() {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	212 var target = url.parse(req.url).pathname;
153 c4a32007d2dc WebTTY: remove polling. John "Elwin" Edwards parents: 140 diff changeset	213 /* Currently only static files and WebSockets are needed. */
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	214 if (req.method == 'POST') {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	215 formdata = getFormValues(reqbody);
153 c4a32007d2dc WebTTY: remove polling. John "Elwin" Edwards parents: 140 diff changeset	216 res.writeHead(405, resheaders);
c4a32007d2dc WebTTY: remove polling. John "Elwin" Edwards parents: 140 diff changeset	217 res.end();
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	218 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	219 else if (req.method == 'GET' \|\| req.method == 'HEAD') {
153 c4a32007d2dc WebTTY: remove polling. John "Elwin" Edwards parents: 140 diff changeset	220 serveStatic(req, res, target);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	221 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	222 else { /* Some other method */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	223 res.writeHead(501, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	224 res.write("<html><head><title>501</title></head>\n<body><h1>501 Not Implemented</h1></body></html>\n");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	225 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	226 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	227 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	228 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	229 req.on('end', respond);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	230 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	231
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	232 process.on("exit", function () {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	233 for (var sessid in sessions) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	234 if (sessions[sessid].alive)
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	235 sessions[sessid].term.kill('SIGHUP');
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	236 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	237 console.log("Quitting...");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	238 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	239 });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	240
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	241 function wsRespond(req) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	242 var w, h, conn;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	243 if (req.resourceURL.pathname == "/sock") {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	244 w = parseInt(req.resourceURL.query.w);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	245 if (isNaN(w) \|\| w <= 0 \|\| w > 256)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	246 w = 80;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	247 h = parseInt(req.resourceURL.query.h);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	248 if (isNaN(h) \|\| h <= 0 \|\| h > 256)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	249 h = 25;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	250 conn = req.accept(null, req.origin);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	251 new TermSessionWS(conn, h, w);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	252 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	253 else {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	254 req.reject(404, "No such resource.");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	255 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	256 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	257
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	258 /* The pty.js module doesn't wait for the processes it spawns, so they
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	259 * become zombies, which leads to unpleasantness when the system runs
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	260 * out of process table entries. But if the child_process module is
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	261 * initialized and a child spawned, node will continue waiting for any
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	262 * children.
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	263 * Someday, some developer will get the bright idea of tracking how many
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	264 * processes the child_process module has spawned, and not waiting if
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	265 * it's zero. Until then, the following useless line will protect us
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	266 * from the zombie hordes.
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	267 * Figuring this out was almost as interesting as the Rogue bug where
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	268 * printf debugging altered whether the high score list was checked.
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	269 */
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	270 child_process.spawn("/bin/true");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	271
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	272 process.env["TERM"] = "xterm-256color";
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	273 var webServer = http.createServer(handler);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	274 webServer.listen(8080, "127.0.0.1");
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	275 console.log('Server running at http://127.0.0.1:8080/');
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	276 var wsServer = new webSocketServer({"httpServer": webServer});
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	277 wsServer.on("request", wsRespond);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	278 console.log('WebSockets online');