Implemented 3G USB dongle setup CLI command

bin/tessel-2.js

@@ -203,6 +203,46 @@ makeCommand('reboot')
   })
   .help('Reboot your Tessel');
 
+makeCommand('3g')
+  .callback(options => {
+    log.level(options.loglevel);
+
+    callControllerWith('setup3g', options);
+  })
+  .option('apn', {
+    default: 'internet',
+    help: 'Access point name of your mobile provider'
+  })
+  .option('dialnumber', {
+    default: '*99#',
+    help: 'Dialnumber provided by your provider, e.g. *99#'
+  })
+  .option('username', {
+    default: '',
+    help: 'Username provided by your provider'
+  })
+  .option('password', {
+    default: '',
+    help: 'Password provided by your provider'
+  })
+  .option('config', {
+    flag,
+    help: 'Change 3G config with parameters from above'
+  })
+  .option('on', {
+    flag,
+    help: 'Enable 3G connection'
+  })
+  .option('off', {
+    flag,
+    help: 'Disable 3G connection'
+  })
+  .option('status', {
+    flag,
+    help: 'Show 3G connection status information'
+  })
+  .help('3G USB dongle setup');
+
 makeCommand('run')
   .callback(options => {
     log.level(options.loglevel);

lib/controller.js

@@ -1057,6 +1057,17 @@ controller.reboot = opts => {
   });
 };
 
+controller.setup3g = opts => {
+  opts.authorized = true;
+  return controller.standardTesselCommand(opts, tessel => {
+    return new Promise((resolve, reject) => {
+      tessel.setup3g(opts).then(() => {
+        resolve();
+      }).catch(error => reject(error));
+    });
+  });
+};
+
 controller.createNewProject = init.createNewProject;
 
 controller.crashReporter = function(options) {

lib/tessel/setup-3g.js

@@ -0,0 +1,119 @@
+var Tessel = require('./tessel');
+var log = require('../log');
+
+Tessel.prototype.setup3g = function(options) {
+
+  var apn = options.apn;
+  var dialnumber = options.dialnumber;
+  var username = options.username;
+  var password = options.password;
+  var config = options.config;
+  var on = options.on;
+  var off = options.off;
+  var status = options.status;
+
+  if (config) {
+	return this.simpleExec(['uci', 'get', 'network.wan']).then(() => {
+		// If dongle already exists remove it and store new configuration
+		return this.simpleExec(['uci', 'delete', 'network.wan']).then(() => {
+			return this.configure3gDongle(apn, dialnumber, username, password);
+		});
+	}).catch(() => {
+		return this.configure3gDongle(apn. dialnumber, username, password);
+	});
+  }
+
+  if (on) {
+  	return this.enable3gConnection();
+  }
+
+  if (off) {
+  	return this.disable3gConnection();
+  }
+
+  if (status) {
+  	return this.show3gConnectionStatus();
+  }
+
+};
+
+Tessel.prototype.configure3gDongle = function(apn, dialnumber, username, password) {
+	return this.add3gDongle()
+	  .then(() => this.set3gDongleName())
+      .then(() => this.set3gDongleIfname())
+      .then(() => this.set3gDongleDevice())
+      .then(() => this.set3gDongleApn(apn))
+      .then(() => this.set3gDongleService())
+      .then(() => this.set3gDongleProto())
+      .then(() => this.set3gDongleDialnumber(dialnumber))
+      .then(() => this.set3gDongleUsername(username))
+      .then(() => this.set3gDonglePassword(password))
+      .then(() => this.storeNew3gDongle())
+      .then(() => this.enable3gConnection())
+      .then(() => this.print3gSetupMessage());
+};
+
+Tessel.prototype.add3gDongle = function() {
+    return this.simpleExec(['uci', 'add', 'network', 'interface']);
+};
+
+Tessel.prototype.set3gDongleName = function() {
+	return this.simpleExec(['uci', 'rename', 'network.@interface[-1]=wan']);
+};
+
+Tessel.prototype.set3gDongleIfname = function() {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].ifname=ppp0']);
+};
+
+Tessel.prototype.set3gDongleDevice = function() {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].device=/dev/ttyUSB0']);
+};
+
+Tessel.prototype.set3gDongleApn = function(apn) {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].apn=' + apn]);
+};
+
+Tessel.prototype.set3gDongleService = function() {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].service=umts']);
+};
+
+Tessel.prototype.set3gDongleProto = function() {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].proto=3g']);
+};
+
+Tessel.prototype.set3gDongleDialnumber = function(dialnumber) {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].dialnumber=' + dialnumber]);
+};
+
+Tessel.prototype.set3gDongleUsername = function(username) {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].username=' + username]);
+};
+
+Tessel.prototype.set3gDonglePassword = function(password) {
+	return this.simpleExec(['uci', 'set', 'network.@interface[-1].password=' + password]);
+};
+
+Tessel.prototype.storeNew3gDongle = function() {
+	return this.simpleExec(['uci', 'commit']);
+};
+
+Tessel.prototype.enable3gConnection = function() {
+	return this.simpleExec(['ifup', 'wan']);
+};
+
+Tessel.prototype.disable3gConnection = function() {
+	return this.simpleExec(['ifdown', 'wan']);
+};
+
+Tessel.prototype.show3gConnectionStatus = function() {
+	return this.simpleExec(['ifstatus', 'wan']).then(data => {
+		log.info(data);
+	}).catch(() => {
+		log.info('Connection data not available');
+	});
+};
+
+Tessel.prototype.print3gSetupMessage = function() {
+	log.info('3G USB dongle has been configured successfully.');
+    log.info('It should connect automatically to the internet.');
+};

lib/tessel/tessel.js

@@ -150,3 +150,4 @@ require('./version');
 require('./wifi');
 require('./restore');
 require('./reboot');
+require('./setup-3g');