using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Reflection; using System.ComponentModel.Composition; using System.ComponentModel; using System.Globalization; using AirScout.PlaneFeeds.Plugin.MEFContract; using System.Diagnostics; using System.Net; using System.IO; using System.Web.Script.Serialization; using System.Xml.Linq; using System.Xml.Serialization; using System.Collections; using Newtonsoft.Json; //TODO: Rename namespace to a name of your choice namespace AirScout.PlaneFeeds.Plugin.OpenSky { //TODO: Rename settings class to a name of your choice // Add any persistant setting here // Use [Browsable(true/false)] to present the setting to the user and allow changes or not // Use [CategoryAttribute(")] to set a default value for this setting // Use [XmlIgnore] if you don't want this setting to be ex-/imported, but stiil stored in settings file // Example: // [CategoryAttribute("Web Feed")] // [DescriptionAttribute("Timeout for loading the site.")] // [DefaultValue(30)] // [XmlIgnore] // public int Timeout { get; set; } /// /// Keeps all persistant settings of plugin /// public class OpenSkySettings { [Browsable(false)] [DefaultValue("")] [XmlIgnore] public string DisclaimerAccepted { get; set; } [Browsable(true)] [CategoryAttribute("Web Feed")] [DescriptionAttribute("Save downloaded JSON to file")] [DefaultValue(false)] [XmlIgnore] public bool SaveToFile { get; set; } [Browsable(true)] [CategoryAttribute("Web Feed")] [DescriptionAttribute("Base URL for website.")] [DefaultValue("https://opensky-network.org/api/states/all?lamin=%MINLAT%&lomin=%MINLON%&lamax=%MAXLAT%&lomax=%MAXLON%")] public string URL { get; set; } [Browsable(true)] [CategoryAttribute("Web Feed")] [DescriptionAttribute("Username for Authentication (blank for anonymous)")] [DefaultValue("")] public string Username { get; set; } [Browsable(true)] [CategoryAttribute("Web Feed")] [DescriptionAttribute("Password for Authentication (blank for anonymous)")] [DefaultValue("")] [PasswordPropertyText(true)] public string Password { get; set; } [Browsable(true)] [CategoryAttribute("Web Feed")] [DescriptionAttribute("Timeout for loading the site.")] [DefaultValue(90)] [XmlIgnore] public int Timeout { get; set; } public OpenSkySettings() { Default(); Load(true); // TODO: } // Methods für Load/Dave/Default, don't change! #region Load/Save/Default /// /// Sets all properties to their default value according to the [DefaultValue=] attribute /// public void Default() { // set all properties to their default values according to definition in [DeafultValue=] foreach (var p in this.GetType().GetProperties()) { try { // initialize all properties with default value if set if (Attribute.IsDefined(p, typeof(DefaultValueAttribute))) { p.SetValue(this, ((DefaultValueAttribute)Attribute.GetCustomAttribute( p, typeof(DefaultValueAttribute)))?.Value, null); } } catch (Exception ex) { Console.WriteLine("[" + this.GetType().Name + "]: Cannot set default value of: " + p.Name + ", " + ex.Message); } } } /// /// Loads settings from a XML-formatted configuration file into settings. /// /// If true, ignore the [XmlIgnore] attribute, e.g. load all settings available in the file.
If false, load only settings without [XmlIgore] attrbute.
/// The filename of the settings file. public void Load(bool loadall, string filename = "") { // use standard filename if empty // be careful because Linux file system is case sensitive if (String.IsNullOrEmpty(filename)) filename = new Uri(Assembly.GetExecutingAssembly().GetName().CodeBase.Replace(".dll", ".cfg").Replace(".DLL", ".CFG")).LocalPath; // do nothing if file not exists if (!File.Exists(filename)) return; try { string xml = ""; using (StreamReader sr = new StreamReader(File.OpenRead(filename))) { xml = sr.ReadToEnd(); } XDocument xdoc = XDocument.Parse(xml); PropertyInfo[] properties = this.GetType().GetProperties(); foreach (PropertyInfo p in properties) { if (!loadall) { // check on XmlIgnore attribute, skip if set object[] attr = p.GetCustomAttributes(typeof(XmlIgnoreAttribute), false); if (attr.Length > 0) continue; } try { // get matching element XElement typenode = xdoc.Element(this.GetType().Name); if (typenode != null) { XElement element = typenode.Element(p.Name); if (element != null) p.SetValue(this, Convert.ChangeType(element.Value, p.PropertyType), null); } } catch (Exception ex) { Console.WriteLine("[" + this.GetType().Name + "]: Error while loading property[" + p.Name + " from " + filename + ", " + ex.Message); } } } catch (Exception ex) { Console.WriteLine("[" + this.GetType().Name + "]: Cannot load settings from " + filename + ", " + ex.Message); } } /// /// Saves settings from settings into a XML-formatted configuration file /// /// If true, ignore the [XmlIgnore] attribute, e.g. save all settings.
If false, save only settings without [XmlIgore] attrbute. /// The filename of the settings file. public void Save(bool saveall, string filename = "") { // use standard filename if empty // be careful because Linux file system is case sensitive if (String.IsNullOrEmpty(filename)) filename = new Uri(Assembly.GetExecutingAssembly().GetName().CodeBase.Replace(".dll", ".cfg").Replace(".DLL", ".CFG")).LocalPath; XmlAttributeOverrides overrides = new XmlAttributeOverrides(); if (saveall) { // ovverride the XmlIgnore attributes to get all serialized PropertyInfo[] properties = this.GetType().GetProperties(); foreach (PropertyInfo p in properties) { XmlAttributes attribs = new XmlAttributes { XmlIgnore = false }; overrides.Add(this.GetType(), p.Name, attribs); } } try { using (StreamWriter sw = new StreamWriter(File.Create(filename))) { XmlSerializer s = new XmlSerializer(this.GetType(), overrides); s.Serialize(sw, this); } } catch (Exception ex) { throw new InvalidOperationException("[" + this.GetType().Name + "]: Cannot save settings to " + filename + ", " + ex.Message); } } } #endregion //TODO: Rename plugin class to a name of yout choice /// /// Holds the plane feed plugin class /// [Export(typeof(IPlaneFeedPlugin))] [ExportMetadata("Name", "PlaneFeedPlugin")] public class OpenSkyPlugin : IPlaneFeedPlugin { private OpenSkySettings Settings = new OpenSkySettings(); // start of interface //TODO: Change return values so that they represent plugin's functionality #region Interface public string Name { get { return "[WebFeed] OpenSky"; } } public string Version { get { return Assembly.GetExecutingAssembly().GetName().Version.ToString(); } } public string Info { get { return "Web feed from the OpenSky Network.\n" + "For details see https://opensky-network.org.\n\n" + "As this is a community network, please consider to run a personal ADSB-receiver and to contribute your data to this network.\n\n" + "The daily limit for anonymous requests to OpenSky Network is 100. You can extend the limit to 1000 if you are an registerd user.\n" + "For this, please enter your username & password here."; } } public bool HasSettings { get { return true; } } public bool CanImport { get { return false; } } public bool CanExport { get { return false; } } public string Disclaimer { get { return ""; } } public string DisclaimerAccepted { get { return Settings.DisclaimerAccepted; } set { Settings.DisclaimerAccepted = value; } } public void ResetSettings() { Settings.Default(); } public void LoadSettings() { Settings.Load(true); } public void SaveSettings() { Settings.Save(true); } public object GetSettings() { return this.Settings; } public void ImportSettings() { // nothing to do } public void ExportSettings() { // nothing to do } public void Start(PlaneFeedPluginArgs args) { // add code for startup here } public PlaneFeedPluginPlaneInfoList GetPlanes(PlaneFeedPluginArgs args) { // intialize variables VarConverter VC = new VarConverter(); VC.AddVar("APPDIR", args.AppDirectory); VC.AddVar("DATADIR", args.AppDataDirectory); VC.AddVar("LOGDIR", args.LogDirectory); VC.AddVar("DATABASEDIR", args.DatabaseDirectory); VC.AddVar("MINLAT", args.MinLat); VC.AddVar("MAXLAT", args.MaxLat); VC.AddVar("MINLON", args.MinLon); VC.AddVar("MAXLON", args.MaxLon); VC.AddVar("MINALTM", args.MinAlt); VC.AddVar("MAXALTM", args.MaxAlt); VC.AddVar("MINALTFT", (int)UnitConverter.m_ft((double)args.MinAlt)); VC.AddVar("MAXALTFT", (int)UnitConverter.m_ft((double)args.MaxAlt)); // initialize plane info list PlaneFeedPluginPlaneInfoList planes = new PlaneFeedPluginPlaneInfoList(); string json = ""; // calculate url and get json String url = VC.ReplaceAllVars(Settings.URL); Console.WriteLine("[" + this.GetType().Name + "]: Creating web request: " + url); // this will only run on .NET 4.0 if you have installed .NET 4.5 or later frameworks on your machine! // ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072; // HttpWebRequest webrequest = (HttpWebRequest)HttpWebRequest.Create(url); // webrequest.Timeout = Settings.Timeout * 1000; // webrequest.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:73.0) Gecko/20100101 Firefox/73.0"; // webrequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"; // Console.WriteLine("[" + this.GetType().Name + "]: Getting web response"); // HttpWebResponse webresponse = (HttpWebResponse)webrequest.GetResponse(); // Console.WriteLine("[" + this.GetType().Name + "]: Reading stream"); // using (StreamReader sr = new StreamReader(webresponse.GetResponseStream())) // { // json = sr.ReadToEnd(); // } DateTime downloadstart = DateTime.UtcNow; json = OSNTlsClient.DownloadFile(url, Settings.Timeout * 1000, Settings.Username, Settings.Password); Console.WriteLine("[" + this.GetType().Name + "]: Content downloaded, " + (DateTime.UtcNow - downloadstart).TotalMilliseconds.ToString("F0") + "ms."); // check for errors if (!json.StartsWith("{")) { // report the first characters of response throw new Exception("Response: " + json.Substring(0, 80)); } // save raw data to file if enabled if (Settings.SaveToFile) { using (StreamWriter sw = new StreamWriter(args.TmpDirectory + Path.DirectorySeparatorChar + this.GetType().Name + "_" + DateTime.UtcNow.ToString("yyyy-MM-dd HH_mm_ss") + ".json")) { sw.WriteLine(json); } } Console.WriteLine("[" + this.GetType().Name + "]: Analyzing data"); // JavaScriptSerializer js = new JavaScriptSerializer(); // dynamic root = js.Deserialize(json); dynamic root = JsonConvert.DeserializeObject(json); try { // analyze json string for planes data // get the planes position list var aclist = root["states"]; if (aclist != null) { foreach (var ac in aclist) { try { // different handling of reading JSON between Windows (Array) & Linux (ArrayList) // access to data values itself is the same int len = 0; len = ac.Count; // skip if too few fields in record if (len < 17) continue; PlaneFeedPluginPlaneInfo plane = new PlaneFeedPluginPlaneInfo(); // get hex first plane.Hex = ReadPropertyString(ac, 0).ToUpper().Trim(); // get callsign plane.Call = ReadPropertyString(ac, 1).ToUpperInvariant().Trim(); // get position plane.Lon = ReadPropertyDouble(ac, 5); plane.Lat = ReadPropertyDouble(ac, 6); // get altitude (provided in m --> convert to ft) plane.Alt = UnitConverter.m_ft(ReadPropertyDouble(ac, 13)); // get track plane.Track = ReadPropertyDouble(ac, 10); // get speed (provided in m/s --> convert to kts) plane.Speed = UnitConverter.ms_kts(ReadPropertyDouble(ac, 9)); // registration is not provided plane.Reg = ""; // get position timestamp in sec int l = ReadPropertyInt(ac, 3); if (l != int.MinValue) { DateTime timestamp = new System.DateTime(1970, 1, 1, 0, 0, 0, 0); timestamp = timestamp.AddSeconds(l); plane.Time = timestamp; } else { // skip plane if no valid timestamp found continue; } // get type info plane.Type = ReadPropertyString(ac, 5); // discard planes on ground bool onground = ReadPropertyBool(ac, 8); if (onground) continue; // discard planes stopped if (plane.Speed <= 0) continue; planes.Add(plane); } catch (Exception ex) { Console.WriteLine("[" + System.Reflection.MethodBase.GetCurrentMethod().Name + "]" + ex.Message); } } } } catch (Exception ex) { Console.WriteLine("[" + System.Reflection.MethodBase.GetCurrentMethod().Name + "]" + ex.Message); } Console.WriteLine("[" + this.GetType().Name + "]: Returning " + planes.Count + " planes"); return planes; } public void Stop(PlaneFeedPluginArgs args) { // add code for stopping here } #endregion // End of interface // ************************************* Helpers **************************************************** private string ReadPropertyString(dynamic o, int propertyindex) { string s = null; try { s = o[propertyindex]; } catch (Exception ex) { // do nothing if something went wrong Console.WriteLine("[ReadPropertyString]: " + ex.ToString()); } return s; } private int ReadPropertyInt(dynamic o, int propertyindex) { int i = int.MinValue; try { double d = ReadPropertyDouble(o, propertyindex); if ((d != double.MinValue) && (d >= int.MinValue) && (d <= int.MaxValue)) i = (int)d; } catch { // do nothing if something went wrong } return i; } private double ReadPropertyDouble(dynamic o, int propertyindex) { double d = double.MinValue; try { string s = o[propertyindex].ToString(CultureInfo.InvariantCulture).Trim(); // check for special values if (String.IsNullOrEmpty(s)) d = double.MinValue; else if (s.ToUpperInvariant().StartsWith("-INF")) d = double.MinValue; else if (s.ToUpperInvariant().StartsWith("+INF")) d = double.MaxValue; else if (s.ToUpperInvariant().StartsWith("NAN")) d = double.NaN; else if (s.ToUpperInvariant().StartsWith("NULL")) d = double.NaN; else d = double.Parse(s, CultureInfo.InvariantCulture); } catch (Exception ex) { // do nothing if something went wrong Console.WriteLine("[ReadPropertyDouble] got invalid value = \"" + o[propertyindex].ToString() + "\": " + ex.ToString()); } return d; } private bool ReadPropertyBool(dynamic o, int propertyindex) { bool b = false; try { string s = o[propertyindex].ToString(); b = s.ToLower() == "true"; } catch (Exception ex) { // do nothing if something went wrong Console.WriteLine("[ReadPropertyBool]: " + ex.ToString()); } return b; } } public static class UnitConverter { public static double ft_m(double feet) { return feet / 3.28084; } public static double m_ft(double m) { return m * 3.28084; } public static double kts_kmh(double kts) { return kts * 1.852; } public static double kmh_kts(double kmh) { return kmh / 1.852; } public static double ms_kts(double ms) { return ms * 3.6 / 1.852; } public static double km_mi(double km) { return km * 1.609; } public static double mi_km(double mi) { return mi / 1.609; } } public class VarConverter : Dictionary { public readonly char VarSeparator = '%'; public void AddVar(string var, object value) { // adds a new var<>value pair to dictionary object o; if (this.TryGetValue(var, out o)) { // item found --> update value o = value; } else { // item not found --> add new this.Add(var, value); } } public object GetValue(string var) { // finds a var in dictionary and returns its value object o; if (this.TryGetValue(var, out o)) { // item found --> return value return o; } // item not found --> return null return null; } public string ReplaceAllVars(string s) { // check for var separotors first if (s.Contains(VarSeparator)) { // OK, string is containing vars --> crack the string first and replace vars try { string[] a = s.Split(VarSeparator); // as we are always using a pair of separators the length of a[] must be odd if (a.Length % 2 == 0) throw new ArgumentException("Number of separators is not an even number."); // create new string and replace all vars (on odd indices) s = ""; for (int i = 0; i < a.Length; i++) { if (i % 2 == 0) { // cannot be not a var on that position s = s + a[i]; } else { // var identifier: upper the string and try to convert a[i] = a[i].ToUpper(); object o; if (this.TryGetValue(a[i], out o)) { // convert floating points with invariant culture info if (o.GetType() == typeof(double)) s = s + ((double)o).ToString(CultureInfo.InvariantCulture); else if (o.GetType() == typeof(float)) s = s + ((float)o).ToString(CultureInfo.InvariantCulture); else s = s + o.ToString(); } else { throw new ArgumentException("Var identifier not found: " + a[i]); } } } } catch (Exception ex) { // throw an excecption throw new ArgumentException("Error while parsing string for variables [" + ex.Message + "]: " + s); } } return s; } } }