RLGWebD: webtty.js annotate

annotate webtty.js @ 140:789c094675f4

WebTTY: use WebSockets when possible.

author	John "Elwin" Edwards
date	Mon, 22 Jul 2013 07:51:53 -0700
parents	f14e92f6d955
children	c4a32007d2dc

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 = {};
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	14 var sessionsWS = {};
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 };
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	82 this.conn.sendUTF(JSON.stringify({"t": "l", "w": w, "h": h}));
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	83 console.log("New WebSocket connection.");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	84 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	85
9 826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	86 function TermSession(sessid, h, w) {
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	87 /* Set up the sizes. */
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	88 w = Math.floor(Number(w));
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	89 if (!(w > 0 && w < 256))
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	90 w = 80;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	91 this.w = w;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	92 h = Math.floor(Number(h));
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	93 if (!(h > 0 && h < 256))
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	94 h = 25;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	95 this.h = h;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	96 /* Customize the environment. */
2 98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	97 var childenv = {};
98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	98 for (var key in process.env) {
98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	99 if (!(key in env_dontuse))
98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	100 childenv[key] = process.env[key];
98bf7c94c954 webtty.js: set up the environment and working directory. John "Elwin" Edwards <elwin@sdf.org> parents: 0 diff changeset	101 }
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	102 var spawnopts = {"env": childenv, "cwd": process.env["HOME"],
ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	103 "rows": this.h, "cols": this.w};
ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	104 this.term = pty.spawn("bash", [], spawnopts);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	105 var ss = this;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	106 /* Eventually we'll need to make sure the sessid isn't in use yet. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	107 this.sessid = sessid;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	108 this.alive = true;
15 7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	109 this.data = []; // Buffer for the process' output.
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	110 this.nsend = 0; // Number to use for the next message sent.
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	111 this.nrecv = 0; // Number expected on the next message received.
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	112 this.msgQ = []; // Queue for messages that arrived out of order.
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	113 this.term.on("data", function (buf) {
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	114 ss.data.push(buf);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	115 });
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	116 this.term.on("exit", function () {
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	117 ss.alive = false;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	118 /* Wait for all the data to get collected */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	119 setTimeout(ss.cleanup, 1000);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	120 });
15 7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	121 this.write = function (data, n) {
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	122 if (!this.alive) {
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	123 /* Throw some kind of exception? */
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	124 return;
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	125 }
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	126 if (n !== this.nrecv) {
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	127 console.log("Session " + this.sessid + ": Expected message " + this.nrecv + ", got " + n);
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	128 }
7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	129 this.nrecv = n + 1;
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	130 this.term.write(data);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	131 };
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	132 this.read = function () {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	133 if (this.data.length == 0)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	134 return null;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	135 var pos = 0;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	136 var i = 0;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	137 for (i = 0; i < this.data.length; i++)
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	138 pos += Buffer.byteLength(this.data[i]);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	139 var nbuf = new Buffer(pos);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	140 var tptr;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	141 pos = 0;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	142 while (this.data.length > 0) {
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	143 tptr = new Buffer(this.data.shift());
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	144 tptr.copy(nbuf, pos);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	145 pos += tptr.length;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	146 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	147 return nbuf;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	148 };
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	149 this.close = function () {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	150 if (this.alive)
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	151 this.term.kill('SIGHUP');
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	152 };
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	153 this.cleanup = function () {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	154 /* Call this when the child is dead. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	155 if (this.alive)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	156 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	157 /* Give the client a chance to read any leftover data. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	158 if (ss.data.length > 0)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	159 setTimeout(ss.remove, 8000);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	160 else
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	161 ss.remove();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	162 };
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	163 this.remove = function () {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	164 delete sessions[ss.sessid];
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	165 console.log("Session " + this.sessid + " removed.");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	166 };
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	167 sessions[sessid] = this;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	168 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	169
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	170 function randkey() {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	171 rnum = Math.floor(Math.random() * 65536 * 65536);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	172 hexstr = rnum.toString(16);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	173 while (hexstr.length < 8)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	174 hexstr = "0" + hexstr;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	175 return hexstr;
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 /* 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	179 function getCookies(req) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	180 cookies = [];
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	181 if ("cookie" in req.headers) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	182 cookstrs = req.headers["cookie"].split("; ");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	183 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	184 eqsign = cookstrs[i].indexOf("=");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	185 if (eqsign > 0) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	186 name = cookstrs[i].slice(0, eqsign).toLowerCase();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	187 val = cookstrs[i].slice(eqsign + 1);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	188 cookies[name] = val;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	189 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	190 else if (eqsign < 0)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	191 cookies[cookstrs[i]] = null;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	192 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	193 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	194 return cookies;
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 urlDec(encstr) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	198 var decstr = "";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	199 var tnum;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	200 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	201 {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	202 if (encstr.charAt(i) == "+")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	203 decstr += " ";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	204 else if (encstr.charAt(i) == "%")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	205 {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	206 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	207 if (!isNaN(tnum) && tnum >= 0)
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	208 decstr += String.fromCharCode(tnum);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	209 i += 2;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	210 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	211 else
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	212 decstr += encstr.charAt(i);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	213 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	214 return decstr;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	215 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	216
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	217 /* Returns the contents of a form */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	218 function getFormValues(formtext) {
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	219 var jsonobj;
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	220 try {
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	221 jsonobj = JSON.parse(formtext);
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	222 } catch (e) {
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	223 if (e instanceof SyntaxError)
bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	224 return null;
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	225 }
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	226 return jsonobj;
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	227 }
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 function login(req, res, formdata) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	230 var resheaders = {'Content-Type': 'text/plain'};
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	231 var sessid = randkey();
9 826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	232 /* The TermSession constructor will check these thoroughly too, but
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	233 * you can't be too suspicious of client-supplied data. */
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	234 var w = 80;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	235 var h = 25;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	236 var t;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	237 if ("w" in formdata) {
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	238 t = Math.floor(Number(formdata["w"]));
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	239 if (t > 0 && t < 256)
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	240 w = t;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	241 }
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	242 if ("h" in formdata) {
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	243 t = Math.floor(Number(formdata["h"]));
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	244 if (t > 0 && t < 256)
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	245 h = t;
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	246 }
826a7ced69f8 Make the emulator screen resizable. John "Elwin" Edwards <elwin@sdf.org> parents: 7 diff changeset	247 var nsession = new TermSession(sessid, h, w);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	248 resheaders["Set-Cookie"] = "ID=" + sessid;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	249 res.writeHead(200, resheaders);
10 d051aad3e95f webtty: begin experimenting with JSON protocol. John "Elwin" Edwards <elwin@sdf.org> parents: 9 diff changeset	250 var logindict = {"login": true, "id": sessid, "w": w, "h": h};
d051aad3e95f webtty: begin experimenting with JSON protocol. John "Elwin" Edwards <elwin@sdf.org> parents: 9 diff changeset	251 res.write(JSON.stringify(logindict));
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	252 res.end();
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	253 console.log("Started new session with key " + sessid + ", pid " + nsession.term.pid);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	254 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	255 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	256
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	257 function findTermSession(req) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	258 var cookies = getCookies(req);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	259 if ("id" in cookies) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	260 var sessid = cookies["id"];
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	261 if (sessid in sessions) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	262 return sessions[sessid];
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	263 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	264 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	265 return null;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	266 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	267
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	268 function serveStatic(req, res, fname) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	269 var nname = path.normalize(fname);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	270 if (nname == "" \|\| nname == "/")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	271 nname = "index.html";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	272 if (nname.match(/\/$/))
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	273 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	274 var realname = path.join(serveStaticRoot, nname);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	275 var extension = path.extname(realname);
81 e4773ac5d4d5 Switch to node v0.8. John "Elwin" Edwards <elwin@sdf.org> parents: 15 diff changeset	276 fs.exists(realname, function (exists) {
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	277 var resheaders = {};
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	278 if (!exists \|\| !extension \|\| extension == ".html")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	279 resheaders["Content-Type"] = "text/html";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	280 else if (extension == ".png")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	281 resheaders["Content-Type"] = "image/png";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	282 else if (extension == ".css")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	283 resheaders["Content-Type"] = "text/css";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	284 else if (extension == ".js")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	285 resheaders["Content-Type"] = "text/javascript";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	286 else if (extension == ".svg")
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	287 resheaders["Content-Type"] = "image/svg+xml";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	288 else
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	289 resheaders["Content-Type"] = "application/octet-stream";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	290 if (exists) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	291 /* 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	292 * 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	293 res.writeHead(200, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	294 fs.readFile(realname, function (error, data) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	295 if (error) throw error;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	296 res.write(data);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	297 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	298 });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	299 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	300 else {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	301 res.writeHead(404, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	302 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	303 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	304 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	305 });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	306 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	307 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	308
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	309 function readFeed(res, term) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	310 res.writeHead(200, { "Content-Type": "text/plain" });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	311 if (term) {
11 481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	312 var answer = {};
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	313 var result = term.read();
11 481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	314 if (result == null) {
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	315 answer["t"] = "n";
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	316 }
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	317 else {
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	318 answer["t"] = "d";
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	319 answer["d"] = result.toString("hex");
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	320 answer["n"] = term.nsend++;
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	321 }
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	322 res.write(JSON.stringify(answer));
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	323 res.end();
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	324 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	325 else {
11 481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	326 sendError(res, 1);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	327 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	328 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	329
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	330 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	331
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	332 function sendError(res, ecode) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	333 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	334 if (!(ecode >= 0 && ecode < errorcodes.length))
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	335 ecode = 0;
481dcee353c9 webtty: switch all server responses to JSON. John "Elwin" Edwards <elwin@sdf.org> parents: 10 diff changeset	336 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	337 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	338 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	339
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	340 function handler(req, res) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	341 /* default headers for the response */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	342 var resheaders = {'Content-Type': 'text/html'};
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	343 /* 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	344 var reqbody = "";
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	345 var formdata;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	346
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	347 /* Register a listener to get the body. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	348 function moredata(chunk) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	349 reqbody += chunk;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	350 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	351 req.on('data', moredata);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	352
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	353 /* 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	354 function respond() {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	355 var target = url.parse(req.url).pathname;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	356 var cterm = findTermSession(req);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	357 /* First figure out if the client is POSTing to a command interface. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	358 if (req.method == 'POST') {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	359 formdata = getFormValues(reqbody);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	360 if (target == '/feed') {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	361 if (!cterm) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	362 sendError(res, 1);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	363 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	364 }
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	365 if (formdata["t"] == "q") {
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	366 /* The client wants to quit. */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	367 // FIXME need to send a message back to the client
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	368 cterm.close();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	369 }
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	370 else if (formdata["t"] == "d" && typeof(formdata["d"]) == "string") {
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	371 /* process the keys */
13 bf7c26d0b66d webtty: switch upward protocol to JSON John "Elwin" Edwards <elwin@sdf.org> parents: 11 diff changeset	372 hexstr = formdata["d"].replace(/[^0-9a-f]/gi, "");
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	373 if (hexstr.length % 2 != 0) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	374 sendError(res, 2);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	375 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	376 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	377 keybuf = new Buffer(hexstr, "hex");
15 7466927c17a5 webtty.js: check message order. John "Elwin" Edwards <elwin@sdf.org> parents: 13 diff changeset	378 cterm.write(keybuf, formdata["n"]);
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	379 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	380 readFeed(res, cterm);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	381 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	382 else if (target == "/login") {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	383 login(req, res, formdata);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	384 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	385 else {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	386 res.writeHead(405, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	387 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	388 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	389 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	390 else if (req.method == 'GET' \|\| req.method == 'HEAD') {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	391 if (target == '/feed') {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	392 if (!cterm) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	393 sendError(res, 1);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	394 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	395 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	396 readFeed(res, cterm);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	397 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	398 /* Default page, create a new term */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	399 /* FIXME New term not created anymore, is a special case still needed? */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	400 else if (target == '/') {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	401 serveStatic(req, res, "/");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	402 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	403 else /* Go look for it in the filesystem */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	404 serveStatic(req, res, target);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	405 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	406 else { /* Some other method */
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	407 res.writeHead(501, resheaders);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	408 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	409 res.end();
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	410 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	411 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	412 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	413 req.on('end', respond);
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	414
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	415 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	416
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	417 process.on("exit", function () {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	418 for (var sessid in sessions) {
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	419 if (sessions[sessid].alive)
86 ad4229cf8321 WebTTY: use the pty.js module. John "Elwin" Edwards <elwin@sdf.org> parents: 81 diff changeset	420 sessions[sessid].term.kill('SIGHUP');
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	421 }
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	422 console.log("Quitting...");
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	423 return;
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	424 });
bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	425
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	426 function wsRespond(req) {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	427 var w, h, conn;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	428 if (req.resourceURL.pathname == "/sock") {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	429 w = parseInt(req.resourceURL.query.w);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	430 if (isNaN(w) \|\| w <= 0 \|\| w > 256)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	431 w = 80;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	432 h = parseInt(req.resourceURL.query.h);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	433 if (isNaN(h) \|\| h <= 0 \|\| h > 256)
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	434 h = 25;
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	435 conn = req.accept(null, req.origin);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	436 new TermSessionWS(conn, h, w);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	437 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	438 else {
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	439 req.reject(404, "No such resource.");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	440 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	441 }
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	442
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	443 /* 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	444 * become zombies, which leads to unpleasantness when the system runs
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	445 * 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	446 * initialized and a child spawned, node will continue waiting for any
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	447 * children.
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	448 * 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	449 * processes the child_process module has spawned, and not waiting if
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	450 * 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	451 * from the zombie hordes.
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	452 * 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	453 * printf debugging altered whether the high score list was checked.
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	454 */
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	455 child_process.spawn("/bin/true");
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	456
0 bd412f63ce0d Put this project under version control, finally. John "Elwin" Edwards <elwin@sdf.org> parents: diff changeset	457 process.env["TERM"] = "xterm-256color";
140 789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	458 var webServer = http.createServer(handler);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	459 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	460 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	461 var wsServer = new webSocketServer({"httpServer": webServer});
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	462 wsServer.on("request", wsRespond);
789c094675f4 WebTTY: use WebSockets when possible. John "Elwin" Edwards parents: 137 diff changeset	463 console.log('WebSockets online');