feat(ap): initial access point creation implementation

bin/tessel-2.js

@@ -277,6 +277,28 @@ makeCommand('version')
   .callback(callControllerCallback('tesselFirmwareVerion'))
   .help('Display Tessel\'s current firmware version');
 
+makeCommand('ap')
+  .option('ssid', {
+    abbr: 'n',
+    help: 'Name of the network.'
+  })
+  .option('pass', {
+    abbr: 'p',
+    help: 'Password to access network.'
+  })
+  .option('security', {
+    abbr: 's',
+    help: 'Encryption to use on network (i.e. WEP, WPA, PSK).'
+  })
+  .option('trigger', {
+    position: 0,
+    help: 'Trigger, i.e. on OR off, the access point'
+  })
+  .help('Configure the Tessel as an access point')
+  .callback(function(opts) {
+    callControllerWith('createAccessPoint', opts);
+  });
+
 
 module.exports = function(args) {
   parser.parse(args);

lib/controller.js

@@ -629,6 +629,13 @@ controller.connectToNetwork = function(opts) {
   });
 };
 
+controller.createAccessPoint = function(opts) {
+  opts.authorized = true;
+  return controller.standardTesselCommand(opts, function(tessel) {
+    return tessel.createAccessPoint(opts);
+  });
+};
+
 controller.printAvailableUpdates = function() {
   return updates.requestBuildList().then(function(builds) {
     logs.info('Latest builds:');

lib/tessel/access-point.js

@@ -0,0 +1,65 @@
+var Tessel = require('./tessel'),
+  commands = require('./commands'),
+  logs = require('../logs');
+
+function commitAndClose(resolve) {
+  var self = Tessel;
+
+  return self.connection.exec(commands.commitWirelessCredentials())
+    .then(function(remoteProcess) {
+      remoteProcess.once('close', function() {
+        return self.connection.exec(commands.reconnectWifi())
+          .then(function(remoteProcess) {
+            return self.receive(remoteProcess).then(function() {
+              logs.info('Access Point credentials set!');
+
+              return self.connection.end()
+                .then(resolve);
+            });
+          });
+      });
+    });
+}
+
+Tessel.prototype.createAccessPoint = function(opts) {
+  var self = this;
+  var ssid = opts.ssid;
+  var password = opts.password;
+  var security = opts.security;
+
+  return new Promise(function(resolve, reject) {
+    if (!ssid) {
+      return reject(new Error('Invalid credentials. Must set ssid'));
+    }
+
+    if (!password || !security) {
+      if (!security) {
+        logs.info('Setting Access Point with SSID:', ssid, 'and password:', password, 'and security mode:', security);
+      } else {
+        logs.info('Setting Access Point with SSID:', ssid, 'and password:', password);
+      }
+    } else {
+      logs.info('Setting Access Point with SSID:', ssid);
+    }
+
+    return self.connection.exec(commands.setAccessPointSSID(ssid))
+      .then(function() {
+        if (password) {
+          return self.connection.exec(commands.setAccessPointPassword(password));
+        } else {
+          return commitAndClose(resolve);
+        }
+      })
+      .then(function() {
+        if (security) {
+          return self.connection.exec(commands.setAccessPointSecurity(security));
+        } else {
+          return commitAndClose(resolve);
+        }
+      })
+      .then(function() {
+        return self.connection.exec(commands.turnAccessPointOn(true))
+          .then(commitAndClose.bind(null, resolve));
+      });
+  });
+};

lib/tessel/commands.js

@@ -88,3 +88,15 @@ module.exports.sysupgrade = function(path) {
 module.exports.getMemoryInfo = function() {
   return ['cat', '/proc/meminfo'];
 };
+module.exports.setAccessPointSSID = function(ssid) {
+  return ['uci', 'set', 'wireless.@wifi-iface[1].ssid=' + ssid];
+};
+module.exports.setAccessPointPassword = function(password) {
+  return ['uci', 'set', 'wireless.@wifi-iface[1].key=' + password];
+};
+module.exports.setAccessPointSecurity = function(security) {
+  return ['uci', 'set', 'wireless.@wifi-iface[1].encryption=' + security];
+};
+module.exports.turnAccessPointOn = function(enabled) {
+  return ['uci', 'set', 'wireless.@wifi-iface[1].disabled=' + Number(enabled ? 0 : 1).toString()];
+};