RLGWebD: webtty.js annotate

annotate webtty.js @ 178:b5df69715001 beta8

Update the documentation.

author	John "Elwin" Edwards
date	Wed, 14 Jan 2015 15:32:21 -0500
parents	5372f1f97cf5
children

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 == "/")
177 5372f1f97cf5 Move index.html files. John "Elwin" Edwards parents: 153 diff changeset	149 nname = "index-sh.html";
0 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');