more error checking when parsing JSON for network list

remove "multicastSubscriptions" field as it isn't used anyway

ZeroTier One/Info.plist

@@ -2,13 +2,6 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>NSAppTransportSecurity</key>
-	<dict>
-		<key>NSAllowsArbitraryLoads</key>
-		<true/>
-	</dict>
-	<key>LSUIElement</key>
-	<true/>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleExecutable</key>
@@ -28,9 +21,16 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>1</string>
+	<string>2</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>LSUIElement</key>
+	<true/>
+	<key>NSAppTransportSecurity</key>
+	<dict>
+		<key>NSAllowsArbitraryLoads</key>
+		<true/>
+	</dict>
 	<key>NSHumanReadableCopyright</key>
 	<string>Copyright © 2016 ZeroTier, Inc. All rights reserved.</string>
 	<key>NSMainNibFile</key>

ZeroTier One/Network.swift

@@ -65,7 +65,6 @@ class Network: NSObject, NSCoding  {
     var dhcp: Bool = false
     var mac: String = ""
     var mtu: Int = 0
-    var multicastSubscriptions: [String] = [String]()
     var name: String = ""
     var netconfRevision: Int = 232
     var nwid: UInt64 = 0
@@ -78,29 +77,53 @@ class Network: NSObject, NSCoding  {
     init(jsonData: [String: AnyObject]) {
         super.init()
 
-        let aa = jsonData["assignedAddresses"] as! [String]
+        if let aa = jsonData["assignedAddresses"] as? [String] {
             for a in aa {
                 assignedAddresses.append(a)
             }
-
-        bridge = (jsonData["bridge"] as! NSNumber).boolValue
-        broadcastEnabled = (jsonData["broadcastEnabled"] as! NSNumber).boolValue
-        dhcp = (jsonData["dhcp"] as! NSNumber).boolValue
-        mac = jsonData["mac"] as! String
-        mtu = (jsonData["mtu"] as! NSNumber).integerValue
-
-        let multSubs = jsonData["multicastSubscriptions"] as! [String]
-        for ms in multSubs {
-            multicastSubscriptions.append(ms)
         }
 
-        name = jsonData["name"] as! String
+        if let b = jsonData["bridge"] as? NSNumber {
-        netconfRevision = (jsonData["netconfRevision"] as! NSNumber).integerValue
+            bridge = b.boolValue
-        nwid = UInt64((jsonData["nwid"] as! String), radix: 16)!
+        }
-        portDeviceName = jsonData["portDeviceName"] as! String
-        portError = (jsonData["portError"] as! NSNumber).integerValue
 
-        let statusStr = jsonData["status"] as! String
+        if let b = jsonData["broadcastEnabled"] as? NSNumber {
+            broadcastEnabled = b.boolValue
+        }
+
+        if let d = jsonData["dhcp"] as? NSNumber {
+            dhcp = d.boolValue
+        }
+
+        if let m = jsonData["mac"] as? String {
+            mac = m
+        }
+
+        if let m = jsonData["mtu"] as? NSNumber {
+            mtu = m.integerValue
+        }
+
+        if let n = jsonData["name"] as? String {
+            name = n
+        }
+
+        if let n = jsonData["netconfRevision"] as? NSNumber {
+            netconfRevision = n.integerValue
+        }
+
+        if let n = UInt64((jsonData["nwid"] as! String), radix: 16) {
+            nwid = n
+        }
+
+        if let p = jsonData["portDeviceName"] as? String {
+            portDeviceName = p
+        }
+
+        if let p = jsonData["portError"] as? NSNumber {
+            portError = p.integerValue
+        }
+
+        if let statusStr = jsonData["status"] as? String {
             switch statusStr {
             case "REQUESTING_CONFIGURATION":
                 status = .REQUESTING_CONFIGURATION
@@ -117,8 +140,9 @@ class Network: NSObject, NSCoding  {
             default:
                 break
             }
+        }
 
-        let typeStr = jsonData["type"] as! String
+        if let typeStr = jsonData["type"] as? String {
             switch typeStr {
             case "PRIVATE":
                 type = .PRIVATE
@@ -127,27 +151,65 @@ class Network: NSObject, NSCoding  {
             default:
                 break
             }
+        }
 
         // if it's being initialized via JSON, it's connected
         connected = true
     }
 
     required init?(coder aDecoder: NSCoder) {
+        if aDecoder.containsValueForKey(PropertyKeys.addressesKey) {
             self.assignedAddresses = aDecoder.decodeObjectForKey(PropertyKeys.addressesKey) as! [String]
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.bridgeKey) {
             self.bridge = aDecoder.decodeBoolForKey(PropertyKeys.bridgeKey)
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.broadcastKey) {
             self.broadcastEnabled = aDecoder.decodeBoolForKey(PropertyKeys.broadcastKey)
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.dhcpKey) {
             self.dhcp = aDecoder.decodeBoolForKey(PropertyKeys.dhcpKey)
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.macKey) {
             self.mac = aDecoder.decodeObjectForKey(PropertyKeys.macKey) as! String
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.mtuKey) {
             self.mtu = aDecoder.decodeIntegerForKey(PropertyKeys.mtuKey)
-        self.multicastSubscriptions = aDecoder.decodeObjectForKey(PropertyKeys.multicastKey) as! [String]
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.nameKey) {
             self.name = aDecoder.decodeObjectForKey(PropertyKeys.nameKey) as! String
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.netconfKey) {
             self.netconfRevision = aDecoder.decodeIntegerForKey(PropertyKeys.netconfKey)
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.nwidKey) {
             self.nwid = (aDecoder.decodeObjectForKey(PropertyKeys.nwidKey) as! NSNumber).unsignedLongLongValue
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.portNameKey) {
             self.portDeviceName = aDecoder.decodeObjectForKey(PropertyKeys.portNameKey) as! String
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.portErrorKey) {
             self.portError = aDecoder.decodeIntegerForKey(PropertyKeys.portErrorKey)
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.statusKey) {
             self.status = NetworkStatus(rawValue: aDecoder.decodeIntegerForKey(PropertyKeys.statusKey))!
+        }
+
+        if aDecoder.containsValueForKey(PropertyKeys.typeKey) {
             self.type = NetworkType(rawValue: aDecoder.decodeIntegerForKey(PropertyKeys.typeKey))!
         }
+    }
 
     func encodeWithCoder(aCoder: NSCoder) {
         aCoder.encodeObject(self.assignedAddresses, forKey: PropertyKeys.addressesKey)
@@ -156,7 +218,6 @@ class Network: NSObject, NSCoding  {
         aCoder.encodeBool(self.dhcp, forKey: PropertyKeys.dhcpKey)
         aCoder.encodeObject(self.mac, forKey: PropertyKeys.macKey)
         aCoder.encodeInteger(self.mtu, forKey: PropertyKeys.mtuKey)
-        aCoder.encodeObject(self.multicastSubscriptions, forKey: PropertyKeys.multicastKey)
         aCoder.encodeObject(self.name, forKey: PropertyKeys.nameKey)
         aCoder.encodeInteger(self.netconfRevision, forKey: PropertyKeys.netconfKey)
         aCoder.encodeObject(NSNumber(unsignedLongLong: self.nwid), forKey: PropertyKeys.nwidKey)