| 1 | /** |
| 2 | * @description Mesh Agent Transport Module - using websocket relay |
| 3 | * @author Ylian Saint-Hilaire |
| 4 | * @version v0.0.1 |
| 5 | */ |
| 6 | |
| 7 | // Construct a MeshServer agent direction object |
| 8 | var CreateKvmDataChannel = function (webchannel, module, keepalive) { |
| 9 | var obj = {}; |
| 10 | obj.m = module; // This is the inner module (Terminal or Desktop) |
| 11 | module.parent = obj; |
| 12 | obj.webchannel = webchannel; |
| 13 | obj.State = 0; |
| 14 | obj.protocol = module.protocol; // 1 = SOL, 2 = KVM, 3 = IDER, 4 = Files, 5 = FileTransfer |
| 15 | obj.onStateChanged = null; |
| 16 | obj.onControlMsg = null; |
| 17 | obj.debugmode = 0; |
| 18 | obj.keepalive = keepalive; |
| 19 | obj.rtcKeepAlive = null; |
| 20 | |
| 21 | // Private method |
| 22 | //obj.debug = function (msg) { console.log(msg); } |
| 23 | |
| 24 | obj.Start = function () { |
| 25 | if (obj.debugmode == 1) { console.log('start'); } |
| 26 | obj.xxStateChange(3); |
| 27 | obj.webchannel.onmessage = obj.xxOnMessage; |
| 28 | obj.rtcKeepAlive = setInterval(obj.xxSendRtcKeepAlive, 30000); |
| 29 | } |
| 30 | |
| 31 | // Setup the file reader |
| 32 | var fileReader = new FileReader(); |
| 33 | var fileReaderInuse = false, fileReaderAcc = []; |
| 34 | if (fileReader.readAsBinaryString) { |
| 35 | // Chrome & Firefox (Draft) |
| 36 | fileReader.onload = function (e) { obj.xxOnSocketData(e.target.result); if (fileReaderAcc.length == 0) { fileReaderInuse = false; } else { fileReader.readAsBinaryString(new Blob([fileReaderAcc.shift()])); } } |
| 37 | } else if (fileReader.readAsArrayBuffer) { |
| 38 | // Chrome & Firefox (Spec) |
| 39 | fileReader.onloadend = function (e) { obj.xxOnSocketData(e.target.result); if (fileReaderAcc.length == 0) { fileReaderInuse = false; } else { fileReader.readAsArrayBuffer(fileReaderAcc.shift()); } } |
| 40 | } |
| 41 | |
| 42 | obj.xxOnMessage = function (e) { |
| 43 | //if (obj.debugmode == 1) { console.log('Recv', e.data); } |
| 44 | //if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Recv(' + obj.State + '): ', typeof e.data, e.data); } |
| 45 | if (typeof e.data == 'string') { if (obj.onControlMsg != null) { obj.onControlMsg(e.data); } return; } // If this is a control message, handle it here. |
| 46 | if (typeof e.data == 'object') { |
| 47 | if (fileReaderInuse == true) { fileReaderAcc.push(e.data); return; } |
| 48 | if (fileReader.readAsBinaryString) { |
| 49 | // Chrome & Firefox (Draft) |
| 50 | fileReaderInuse = true; |
| 51 | fileReader.readAsBinaryString(new Blob([e.data])); |
| 52 | } else if (f.readAsArrayBuffer) { |
| 53 | // Chrome & Firefox (Spec) |
| 54 | fileReaderInuse = true; |
| 55 | fileReader.readAsArrayBuffer(e.data); |
| 56 | } else { |
| 57 | // IE10, readAsBinaryString does not exist, use an alternative. |
| 58 | var binary = '', bytes = new Uint8Array(e.data), length = bytes.byteLength; |
| 59 | for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); } |
| 60 | obj.xxOnSocketData(binary); |
| 61 | } |
| 62 | } else { |
| 63 | // If we get a string object, it maybe the WebRTC confirm. Ignore it. |
| 64 | //obj.debug("Agent Redir Relay - OnData - " + typeof e.data + " - " + e.data.length); |
| 65 | obj.xxOnSocketData(e.data); |
| 66 | } |
| 67 | }; |
| 68 | |
| 69 | /* |
| 70 | obj.xxOnMessage = function (e) { |
| 71 | //if (obj.debugmode == 1) { console.log('Recv', e.data); } |
| 72 | //if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Recv(' + obj.State + '): ', typeof e.data, e.data); } |
| 73 | if (typeof e.data == 'string') { if (obj.onControlMsg != null) { obj.onControlMsg(e.data); } return; } // If this is a control message, handle it here. |
| 74 | if (typeof e.data == 'object') { |
| 75 | var f = new FileReader(); |
| 76 | if (f.readAsBinaryString) { |
| 77 | // Chrome & Firefox (Draft) |
| 78 | f.onload = function (e) { obj.xxOnSocketData(e.target.result); } |
| 79 | f.readAsBinaryString(new Blob([e.data])); |
| 80 | } else if (f.readAsArrayBuffer) { |
| 81 | // Chrome & Firefox (Spec) |
| 82 | f.onloadend = function (e) { obj.xxOnSocketData(e.target.result); } |
| 83 | f.readAsArrayBuffer(e.data); |
| 84 | } else { |
| 85 | // IE10, readAsBinaryString does not exist, use an alternative. |
| 86 | var binary = '', bytes = new Uint8Array(e.data), length = bytes.byteLength; |
| 87 | for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); } |
| 88 | obj.xxOnSocketData(binary); |
| 89 | } |
| 90 | } else { |
| 91 | // If we get a string object, it maybe the WebRTC confirm. Ignore it. |
| 92 | //obj.debug("Agent Redir Relay - OnData - " + typeof e.data + " - " + e.data.length); |
| 93 | obj.xxOnSocketData(e.data); |
| 94 | } |
| 95 | }; |
| 96 | */ |
| 97 | |
| 98 | obj.xxOnSocketData = function (data) { |
| 99 | if (!data) return; |
| 100 | if (typeof data === 'object') { |
| 101 | // This is an ArrayBuffer, convert it to a string array (used in IE) |
| 102 | var binary = '', bytes = new Uint8Array(data), length = bytes.byteLength; |
| 103 | for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); } |
| 104 | data = binary; |
| 105 | } |
| 106 | else if (typeof data !== 'string') return; |
| 107 | //console.log("xxOnSocketData", rstr2hex(data)); |
| 108 | return obj.m.ProcessData(data); |
| 109 | } |
| 110 | |
| 111 | // Send a control message over the WebRTC data channel |
| 112 | obj.sendCtrlMsg = function (x) { |
| 113 | if (typeof x == 'string') { |
| 114 | obj.webchannel.send(x); |
| 115 | //if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Send(' + obj.State + '): ', typeof x, x); } |
| 116 | if (obj.keepalive != null) obj.keepalive.sendKeepAlive(); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | // Send a binary message over the WebRTC data channel |
| 121 | obj.send = function (x) { |
| 122 | if (typeof x == 'string') { var b = new Uint8Array(x.length); for (var i = 0; i < x.length; ++i) { b[i] = x.charCodeAt(i); } x = b; } |
| 123 | //if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Send(' + obj.State + '): ', typeof x, x); } |
| 124 | obj.webchannel.send(x); |
| 125 | } |
| 126 | |
| 127 | obj.xxStateChange = function(newstate) { |
| 128 | if (obj.State == newstate) return; |
| 129 | obj.State = newstate; |
| 130 | obj.m.xxStateChange(obj.State); |
| 131 | if (obj.onStateChanged != null) obj.onStateChanged(obj, obj.State); |
| 132 | } |
| 133 | |
| 134 | obj.Stop = function () { |
| 135 | if (obj.debugmode == 1) { console.log('stop'); } |
| 136 | if (obj.rtcKeepAlive != null) { clearInterval(obj.rtcKeepAlive); obj.rtcKeepAlive = null; } |
| 137 | obj.xxStateChange(0); |
| 138 | } |
| 139 | |
| 140 | obj.xxSendRtcKeepAlive = function () { |
| 141 | //if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-SendKeepAlive()'); } |
| 142 | obj.sendCtrlMsg(JSON.stringify({ action: 'ping' })); |
| 143 | } |
| 144 | |
| 145 | return obj; |
| 146 | } |