mirror of
https://github.com/Ylianst/MeshCentral.git
synced 2024-12-26 23:25:53 -05:00
Updated User-Consent and Notification flow for Terminal
This commit is contained in:
Bryan Roe
parent
707c4d2d9d
commit
59cbf6771f
@ -1134,14 +1134,21 @@ function createMeshCore(agent) {
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if (this.httprequest.state == 0) {
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// Check if this is a relay connection
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if ((data == 'c') || (data == 'cr')) { this.httprequest.state = 1; /*sendConsoleText("Tunnel #" + this.httprequest.index + " now active", this.httprequest.sessionid);*/ }
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} else {
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}
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else
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{
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// Handle tunnel data
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if (this.httprequest.protocol == 0) { // 1 = Terminal (admin), 2 = Desktop, 5 = Files, 6 = PowerShell (admin), 7 = Plugin Data Exchange, 8 = Terminal (user), 9 = PowerShell (user)
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// Take a look at the protocol
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if ((data.length > 3) && (data[0] == '{')) { onTunnelControlData(data, this); return; }
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this.httprequest.protocol = parseInt(data);
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if (typeof this.httprequest.protocol != 'number') { this.httprequest.protocol = 0; }
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if ((this.httprequest.protocol == 1) || (this.httprequest.protocol == 6) || (this.httprequest.protocol == 8) || (this.httprequest.protocol == 9)) {
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if ((this.httprequest.protocol == 1) || (this.httprequest.protocol == 6) || (this.httprequest.protocol == 8) || (this.httprequest.protocol == 9))
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{
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//
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// Remote Terminal
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//
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// Check user access rights for terminal
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if (((this.httprequest.rights & MESHRIGHT_REMOTECONTROL) == 0) || ((this.httprequest.rights != 0xFFFFFFFF) && ((this.httprequest.rights & MESHRIGHT_NOTERMINAL) != 0))) {
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// Disengage this tunnel, user does not have the rights to do this!!
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@ -1151,23 +1158,40 @@ function createMeshCore(agent) {
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return;
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}
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if (process.platform == 'win32')
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{
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if (!require('win-terminal').PowerShellCapable() && (this.httprequest.protocol == 6 || this.httprequest.protocol == 9))
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{
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this.httprequest.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: 'PowerShell is not supported on this version of windows', msgid: 1 }));
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this.httprequest.s.end();
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return;
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}
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}
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var prom = require('promise');
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this.httprequest.tpromise = new prom(function (res, rej) { this._res = res; this._rej = rej; });
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this.httprequest.tpromise.that = this;
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this.httprequest.tpromise.httprequest = this.httprequest;
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this.end = function () {
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this.end = function ()
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{
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if (this.httprequest.tpromise._consent) { this.httprequest.tpromise._consent.close(); }
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// Remove the terminal session to the count to update the server
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if (this.httprequest.userid != null) {
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if (this.httprequest.userid != null)
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{
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if (tunnelUserCount.terminal[this.httprequest.userid] != null) { tunnelUserCount.terminal[this.httprequest.userid]--; if (tunnelUserCount.terminal[this.httprequest.userid] <= 0) { delete tunnelUserCount.terminal[this.httprequest.userid]; } }
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try { mesh.SendCommand({ action: 'sessions', type: 'terminal', value: tunnelUserCount.terminal }); } catch (ex) { }
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}
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if (process.platform == 'win32') {
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if (process.platform == 'win32')
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{
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// Unpipe the web socket
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this.unpipe(this.httprequest._term);
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if (this.httprequest._term) { this.httprequest._term.unpipe(this); }
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// Unpipe the WebRTC channel if needed (This will also be done when the WebRTC channel ends).
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if (this.rtcchannel) {
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if (this.rtcchannel)
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{
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this.rtcchannel.unpipe(this.httprequest._term);
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if (this.httprequest._term) { this.httprequest._term.unpipe(this.rtcchannel); }
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}
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@ -1175,219 +1199,223 @@ function createMeshCore(agent) {
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// Clean up
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if (this.httprequest._term) { this.httprequest._term.end(); }
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this.httprequest._term = null;
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} else {
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// TODO!!
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}
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};
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// Remote terminal using native pipes
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if (process.platform == 'win32')
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// Perform User-Consent if needed.
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if (this.httprequest.consent && (this.httprequest.consent & 16))
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{
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try
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this.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: "Waiting for user to grant access...", msgid: 1 }));
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this.httprequest.tpromise._consent = require('message-box').create('MeshCentral', this.httprequest.username + " requesting Terminal Access. Grant access?", 30);
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this.httprequest.tpromise._consent.retPromise = this.httprequest.tpromise;
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this.httprequest.tpromise._consent.then(
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function ()
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{
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// Success
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MeshServerLog("Local user accepted remote terminal request (" + this.retPromise.httprequest.remoteaddr + ")", this.retPromise.that.httprequest);
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this.retPromise.that.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: null, msgid: 0 }));
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this.retPromise._consent = null;
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this.retPromise._res();
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},
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function (e)
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{
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// Denied
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MeshServerLog("Local user rejected remote terminal request (" + this.retPromise.that.httprequest.remoteaddr + ")", this.retPromise.that.httprequest);
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this.retPromise.that.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: e.toString(), msgid: 2 }));
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this.retPromise._rej(e.toString());
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});
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}
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else
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{
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// User-Consent is not required, so just resolve this promise
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this.httprequest.tpromise._res();
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}
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this.httprequest.tpromise.then(
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function ()
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{
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var cols = 80, rows = 25;
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if (this.httprequest.xoptions)
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{
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if (this.httprequest.xoptions.rows) { rows = this.httprequest.xoptions.rows; }
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if (this.httprequest.xoptions.cols) { cols = this.httprequest.xoptions.cols; }
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}
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this.httprequest.connectionPromise = new prom(function (res, rej) { this._res = res; this._rej = rej; });
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this.httprequest.connectionPromise.ws = this.that;
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if (!require('win-terminal').PowerShellCapable() && (this.httprequest.protocol == 6 || this.httprequest.protocol == 9)) { throw ('PowerShell is not supported on this version of windows'); }
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if ((this.httprequest.protocol == 1) || (this.httprequest.protocol == 6))
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// Start Terminal
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if(process.platform == 'win32')
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{
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// Admin Terminal
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if (require('win-virtual-terminal').supported)
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try
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{
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// ConPTY PseudoTerminal
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// this.httprequest._term = require('win-virtual-terminal')[this.httprequest.protocol == 6 ? 'StartPowerShell' : 'Start'](80, 25);
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var cols = 80, rows = 25;
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if (this.httprequest.xoptions)
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{
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if (this.httprequest.xoptions.rows) { rows = this.httprequest.xoptions.rows; }
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if (this.httprequest.xoptions.cols) { cols = this.httprequest.xoptions.cols; }
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}
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// The above line is commented out, because there is a bug with ClosePseudoConsole() API, so this is the workaround
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this.httprequest._dispatcher = require('win-dispatcher').dispatch({ modules: [{ name: 'win-virtual-terminal', script: getJSModule('win-virtual-terminal') }], launch: { module: 'win-virtual-terminal', method: (this.httprequest.protocol == 6 ? 'StartPowerShell' : 'Start'), args: [cols, rows] } });
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this.httprequest._dispatcher.ws = this;
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this.httprequest._dispatcher.on('connection', function (c)
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if ((this.httprequest.protocol == 1) || (this.httprequest.protocol == 6))
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{
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this.ws._term = c;
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c.pipe(this.ws, { dataTypeSkip: 1 });
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this.ws.pipe(c, { dataTypeSkip: 1 });
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this.ws.httprequest.tpromise._res();
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});
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}
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else
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{
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// Legacy Terminal
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this.httprequest._term = require('win-terminal')[this.httprequest.protocol == 6 ? 'StartPowerShell' : 'Start'](cols, rows);
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this.httprequest.tpromise._res(this.httprequest._term);
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}
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}
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else
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{
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// Logged in user
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var userPromise = require('user-sessions').enumerateUsers();
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userPromise.that = this;
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userPromise.then(function (u)
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{
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var that = this.that;
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if (u.Active.length > 0)
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{
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var username = u.Active[0].Username;
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// Admin Terminal
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if (require('win-virtual-terminal').supported)
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{
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// ConPTY PseudoTerminal
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that.httprequest._dispatcher = require('win-dispatcher').dispatch({ user: username, modules: [{ name: 'win-virtual-terminal', script: getJSModule('win-virtual-terminal') }], launch: { module: 'win-virtual-terminal', method: (that.httprequest.protocol == 9 ? 'StartPowerShell' : 'Start'), args: [cols, rows] } });
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// this.httprequest._term = require('win-virtual-terminal')[this.httprequest.protocol == 6 ? 'StartPowerShell' : 'Start'](80, 25);
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// The above line is commented out, because there is a bug with ClosePseudoConsole() API, so this is the workaround
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this.httprequest._dispatcher = require('win-dispatcher').dispatch({ modules: [{ name: 'win-virtual-terminal', script: getJSModule('win-virtual-terminal') }], launch: { module: 'win-virtual-terminal', method: (this.httprequest.protocol == 6 ? 'StartPowerShell' : 'Start'), args: [cols, rows] } });
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this.httprequest._dispatcher.httprequest = this.httprequest;
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this.httprequest._dispatcher.on('connection', function (c)
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{
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this.httprequest.connectionPromise._res(c);
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});
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}
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else
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{
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// Legacy Terminal
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that.httprequest._dispatcher = require('win-dispatcher').dispatch({ user: username, modules: [{ name: 'win-terminal', script: getJSModule('win-terminal') }], launch: { module: 'win-terminal', method: (that.httprequest.protocol == 9 ? 'StartPowerShell' : 'Start'), args: [cols, rows] } });
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this.httprequest.connectionPromise._res(require('win-terminal')[this.httprequest.protocol == 6 ? 'StartPowerShell' : 'Start'](cols, rows));
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}
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that.httprequest._dispatcher.ws = that;
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that.httprequest._dispatcher.on('connection', function (c)
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}
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else
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{
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// Logged in user
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var userPromise = require('user-sessions').enumerateUsers();
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userPromise.that = this;
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userPromise.then(function (u)
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{
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this.ws._term = c;
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c.pipe(this.ws, { dataTypeSkip: 1 });
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this.ws.pipe(c, { dataTypeSkip: 1 });
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this.ws.httprequest.tpromise._res();
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var that = this.that;
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if (u.Active.length > 0)
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{
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var username = u.Active[0].Username;
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if (require('win-virtual-terminal').supported)
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{
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// ConPTY PseudoTerminal
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that.httprequest._dispatcher = require('win-dispatcher').dispatch({ user: username, modules: [{ name: 'win-virtual-terminal', script: getJSModule('win-virtual-terminal') }], launch: { module: 'win-virtual-terminal', method: (that.httprequest.protocol == 9 ? 'StartPowerShell' : 'Start'), args: [cols, rows] } });
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}
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else
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{
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// Legacy Terminal
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that.httprequest._dispatcher = require('win-dispatcher').dispatch({ user: username, modules: [{ name: 'win-terminal', script: getJSModule('win-terminal') }], launch: { module: 'win-terminal', method: (that.httprequest.protocol == 9 ? 'StartPowerShell' : 'Start'), args: [cols, rows] } });
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}
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that.httprequest._dispatcher.ws = that;
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that.httprequest._dispatcher.on('connection', function (c)
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{
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this.ws.httprequest.connectionPromise._res(c);
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});
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}
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});
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}
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});
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}
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} catch (e)
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{
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MeshServerLog('Failed to start remote terminal session, ' + e.toString() + ' (' + this.httprequest.remoteaddr + ')', this.httprequest);
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this.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: e.toString(), msgid: 2, msgargs: [e.toString(), this.httprequest.remoteaddr] }));
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this.end();
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return;
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}
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if (!this.httprequest._dispatcher)
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{
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this.httprequest._term.pipe(this, { dataTypeSkip: 1 });
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this.pipe(this.httprequest._term, { dataTypeSkip: 1, end: false });
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this.prependListener('end', function () { this.httprequest._term.end(function () { console.log("Terminal was closed"); }); });
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this.httprequest.tpromise._res();
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}
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}
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else
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{
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try
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{
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var bash = fs.existsSync('/bin/bash') ? '/bin/bash' : false;
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var sh = fs.existsSync('/bin/sh') ? '/bin/sh' : false;
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var login = process.platform == 'linux' ? '/bin/login' : '/usr/bin/login';
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var env = { HISTCONTROL: 'ignoreboth' };
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if (this.httprequest.xoptions)
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{
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if (this.httprequest.xoptions.rows) { env.LINES = ('' + this.httprequest.xoptions.rows); }
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if (this.httprequest.xoptions.cols) { env.COLUMNS = ('' + this.httprequest.xoptions.cols); }
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}
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var options = { type: childProcess.SpawnTypes.TERM, uid: (this.httprequest.protocol == 8) ? require('user-sessions').consoleUid() : null, env: env };
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if (this.httprequest.xoptions && this.httprequest.xoptions.requireLogin)
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{
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if (!require('fs').existsSync(login)) { throw ('Unable to spawn login process'); }
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this.httprequest.process = childProcess.execFile(login, ['login'], options); // Start login shell
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}
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else if (bash)
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{
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this.httprequest.process = childProcess.execFile(bash, ['bash'], options); // Start bash
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// Spaces at the beginning of lines are needed to hide commands from the command history
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if (process.platform == 'linux') { this.httprequest.process.stdin.write(' alias ls=\'ls --color=auto\';clear\n'); }
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}
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else if (sh)
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{
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this.httprequest.process = childProcess.execFile(sh, ['sh'], options); // Start sh
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// Spaces at the beginning of lines are needed to hide commands from the command history
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if (process.platform == 'linux') { this.httprequest.process.stdin.write(' alias ls=\'ls --color=auto\';clear\n'); }
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}
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catch (e)
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{
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this.httprequest.connectionPromise._rej('Failed to start remote terminal session, ' + e.toString());
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}
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}
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else
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{
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MeshServerLog("Failed to start remote terminal session, no shell found");
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this.httprequest.tpromise._rej()
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return;
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}
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} catch (e)
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{
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MeshServerLog("Failed to start remote terminal session, " + e.toString() + ' (' + this.httprequest.remoteaddr + ')', this.httprequest);
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this.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: e.toString() }));
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this.end();
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this.httprequest.tpromise._rej();
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return;
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}
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this.httprequest.process.tunnel = this;
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this.httprequest.process.on('exit', function (ecode, sig) { this.tunnel.end(); });
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this.httprequest.process.stderr.on('data', function (chunk) { this.parent.tunnel.write(chunk); });
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this.httprequest.process.stdout.pipe(this, { dataTypeSkip: 1 }); // 0 = Binary, 1 = Text.
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this.pipe(this.httprequest.process.stdin, { dataTypeSkip: 1, end: false }); // 0 = Binary, 1 = Text.
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this.prependListener('end', function () { this.httprequest.process.kill(); });
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this.httprequest.tpromise._res();
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}
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// Add the terminal session to the count to update the server
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if (this.httprequest.userid != null) {
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if (tunnelUserCount.terminal[this.httprequest.userid] == null) { tunnelUserCount.terminal[this.httprequest.userid] = 1; } else { tunnelUserCount.terminal[this.httprequest.userid]++; }
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try { mesh.SendCommand({ action: 'sessions', type: 'terminal', value: tunnelUserCount.terminal }); } catch (ex) { }
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}
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this.httprequest.tpromise.that = this;
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this.httprequest.tpromise.then(function ()
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{
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var that = this.that;
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// Perform notification if needed. Toast messages may not be supported on all platforms.
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if (that.httprequest.consent && (that.httprequest.consent & 16))
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{
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// User Consent Prompt is required
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// Send a console message back using the console channel, "\n" is supported.
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that.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: "Waiting for user to grant access...", msgid: 1 }));
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var pr = require('message-box').create('MeshCentral', that.httprequest.username + " requesting Terminal Access. Grant access?", 30);
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pr.ws = that;
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that.pause();
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that._consentpromise = pr;
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that.prependOnceListener('end', function () { if (this._consentpromise && this._consentpromise.close) { this._consentpromise.close(); } });
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pr.then(
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function ()
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try
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{
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// Success
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this.ws._consentpromise = null;
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MeshServerLog("Starting remote terminal after local user accepted (" + this.ws.httprequest.remoteaddr + ")", this.ws.httprequest);
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this.ws.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: null, msgid: 0 }));
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var bash = fs.existsSync('/bin/bash') ? '/bin/bash' : false;
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var sh = fs.existsSync('/bin/sh') ? '/bin/sh' : false;
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var login = process.platform == 'linux' ? '/bin/login' : '/usr/bin/login';
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var env = { HISTCONTROL: 'ignoreboth' };
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if (this.httprequest.xoptions)
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{
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if (this.httprequest.xoptions.rows) { env.LINES = ('' + this.httprequest.xoptions.rows); }
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if (this.httprequest.xoptions.cols) { env.COLUMNS = ('' + this.httprequest.xoptions.cols); }
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}
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var options = { type: childProcess.SpawnTypes.TERM, uid: (this.httprequest.protocol == 8) ? require('user-sessions').consoleUid() : null, env: env };
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if (this.httprequest.xoptions && this.httprequest.xoptions.requireLogin)
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{
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if (!require('fs').existsSync(login)) { throw ('Unable to spawn login process'); }
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this.httprequest.connectionPromise._res(childProcess.execFile(login, ['login'], options)); // Start login shell
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}
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else if (bash)
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{
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var p = childProcess.execFile(bash, ['bash'], options); // Start bash
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// Spaces at the beginning of lines are needed to hide commands from the command history
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if (process.platform == 'linux') { p.stdin.write(' alias ls=\'ls --color=auto\';clear\n'); }
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this.httprequest.connectionPromise._res(p);
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}
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else if (sh)
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{
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var p = childProcess.execFile(sh, ['sh'], options); // Start sh
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// Spaces at the beginning of lines are needed to hide commands from the command history
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if (process.platform == 'linux') { p.stdin.write(' alias ls=\'ls --color=auto\';clear\n'); }
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this.httprequest.connectionPromise._res(p);
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}
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else
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{
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this.httprequest.connectionPromise._rej('Failed to start remote terminal session, no shell found');
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}
|
||||
}
|
||||
catch (e)
|
||||
{
|
||||
this.httprequest.connectionPromise._rej('Failed to start remote terminal session, ' + e.toString());
|
||||
}
|
||||
}
|
||||
|
||||
this.httprequest.connectionPromise.then(
|
||||
function (term)
|
||||
{
|
||||
// SUCCESS
|
||||
var stdoutstream;
|
||||
var stdinstream;
|
||||
if (process.platform == 'win32')
|
||||
{
|
||||
this.ws.httprequest._term = term;
|
||||
this.ws.httprequest._term.tunnel = this.ws;
|
||||
stdoutstream = stdinstream = term;
|
||||
}
|
||||
else
|
||||
{
|
||||
this.ws.httprequest.process = term;
|
||||
this.ws.httprequest.process.tunnel = this.ws;
|
||||
term.stderr.stdout = term.stdout;
|
||||
term.stderr.on('data', function (c) { this.stdout.write(c); });
|
||||
stdoutstream = term.stdout;
|
||||
stdinstream = term.stdin;
|
||||
this.ws.prependListener('end', function () { this.httprequest.process.kill(); });
|
||||
term.prependListener('exit', function () { this.tunnel.end(); });
|
||||
}
|
||||
|
||||
this.ws.removeAllListeners('data');
|
||||
this.ws.on('data', onTunnelControlData);
|
||||
|
||||
stdoutstream.pipe(this.ws, { dataTypeSkip: 1 }); // 0 = Binary, 1 = Text.
|
||||
this.ws.pipe(stdinstream, { dataTypeSkip: 1, end: false }); // 0 = Binary, 1 = Text.
|
||||
|
||||
// Add the terminal session to the count to update the server
|
||||
if (this.ws.httprequest.userid != null)
|
||||
{
|
||||
if (tunnelUserCount.terminal[this.ws.httprequest.userid] == null) { tunnelUserCount.terminal[this.ws.httprequest.userid] = 1; } else { tunnelUserCount.terminal[this.ws.httprequest.userid]++; }
|
||||
try { mesh.SendCommand({ action: 'sessions', type: 'terminal', value: tunnelUserCount.terminal }); } catch (ex) { }
|
||||
}
|
||||
|
||||
// Toast Notification, if required
|
||||
if (this.ws.httprequest.consent && (this.ws.httprequest.consent & 2))
|
||||
{
|
||||
// User Notifications is required
|
||||
try { require('toaster').Toast('MeshCentral', this.ws.httprequest.username + " started a remote terminal session."); } catch (ex) { }
|
||||
}
|
||||
this.ws.resume();
|
||||
},
|
||||
function (e)
|
||||
{
|
||||
// User Consent Denied/Failed
|
||||
this.ws._consentpromise = null;
|
||||
MeshServerLog("Failed to start remote terminal after local user rejected (" + this.ws.httprequest.remoteaddr + ")", this.ws.httprequest);
|
||||
// FAILED to connect terminal
|
||||
this.ws.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: e.toString(), msgid: 2 }));
|
||||
this.ws.end();
|
||||
});
|
||||
}
|
||||
else
|
||||
},
|
||||
function (e)
|
||||
{
|
||||
// User Consent Prompt is not required
|
||||
if (that.httprequest.consent && (that.httprequest.consent & 2))
|
||||
{
|
||||
// User Notifications is required
|
||||
MeshServerLog('Started remote terminal with toast notification (' + that.httprequest.remoteaddr + ')', that.httprequest);
|
||||
try { require('toaster').Toast('MeshCentral', that.httprequest.username + ' started a remote terminal session.'); } catch (ex) { }
|
||||
} else
|
||||
{
|
||||
MeshServerLog('Started remote terminal without notification (' + that.httprequest.remoteaddr + ')', that.httprequest);
|
||||
}
|
||||
that.resume();
|
||||
}
|
||||
}, function () { });
|
||||
// DO NOT start terminal
|
||||
this.that.write(JSON.stringify({ ctrlChannel: '102938', type: 'console', msg: e.toString(), msgid: 2 }));
|
||||
this.that.end();
|
||||
});
|
||||
}
|
||||
else if (this.httprequest.protocol == 2)
|
||||
{
|
||||
//
|
||||
// Remote KVM
|
||||
//
|
||||
|
||||
this.removeAllListeners('data');
|
||||
this.on('data', onTunnelControlData);
|
||||
//this.write('MeshCore Terminal Hello');
|
||||
} else if (this.httprequest.protocol == 2) {
|
||||
// Check user access rights for desktop
|
||||
if ((((this.httprequest.rights & MESHRIGHT_REMOTECONTROL) == 0) && ((this.httprequest.rights & MESHRIGHT_REMOTEVIEW) == 0)) || ((this.httprequest.rights != 0xFFFFFFFF) && ((this.httprequest.rights & MESHRIGHT_NODESKTOP) != 0))) {
|
||||
// Disengage this tunnel, user does not have the rights to do this!!
|
||||
|
||||
Loading…
Reference in New Issue
Block a user