OpenHardwareMonitor: Utilities/HttpServer.cs@0a386ef7d5bb

     1 /*

     3   This Source Code Form is subject to the terms of the Mozilla Public

     4   License, v. 2.0. If a copy of the MPL was not distributed with this

     5   file, You can obtain one at http://mozilla.org/MPL/2.0/.

     7 	Copyright (C) 2012 Prince Samuel <prince.samuel@gmail.com>

     9 */

    11 using System;

    12 using System.Collections.Generic;

    13 using System.Text;

    14 using System.Net;

    15 using System.Threading;

    16 using System.IO;

    17 using OpenHardwareMonitor.GUI;

    18 using OpenHardwareMonitor.Hardware;

    19 using System.Reflection;

    20 using System.Drawing;

    21 using System.Drawing.Imaging;

    23 namespace OpenHardwareMonitor.Utilities

    24 {

    25     public class HttpServer

    26     {

    27         private HttpListener listener;

    28         private int listenerPort, nodeCount;

    29         private Thread listenerThread;

    30         private Node root;

    32         public HttpServer(Node r, int p)

    33         {

    34             root = r;

    35             listenerPort = p;

    36             //JSON node count.

    37             nodeCount = 0;

    38             listener = new HttpListener();

    39         }

    41         public Boolean startHTTPListener()

    42         {

    43             try

    44             {

    45                 if (listener.IsListening)

    46                     return true;

    48                 string prefix = "http://+:" + listenerPort + "/";

    49                 listener.Prefixes.Clear();

    50                 listener.Prefixes.Add(prefix);

    51                 listener.Start();

    53                 if (listenerThread == null)

    54                 {

    55                     listenerThread = new Thread(HandleRequests);

    56                     listenerThread.Start();

    57                 }

    58             }

    59             catch (Exception e)

    60             {

    61                 return false;

    62             }

    64             return true;

    65         }

    67         public Boolean stopHTTPListener()

    68         {

    69             try

    70             {

    71                 listenerThread.Abort();

    72                 listener.Stop();

    73                 listenerThread = null;

    74             }

    75             catch (System.Net.HttpListenerException e)

    76             {

    77             }

    78             catch (System.Threading.ThreadAbortException e)

    79             {

    80             }

    81             catch (System.NullReferenceException e)

    82             {

    83             }

    84             catch (Exception e)

    85             {

    86             }

    87             return true;

    88         }

    90         public void HandleRequests()

    91         {

    93             while (listener.IsListening)

    94             {

    95                 var context = listener.BeginGetContext(new AsyncCallback(ListenerCallback), listener);

    96                 context.AsyncWaitHandle.WaitOne();

    97             }

    98         }

   100         public void ListenerCallback(IAsyncResult result)

   101         {

   102             HttpListener listener = (HttpListener)result.AsyncState;

   103             if (listener == null || !listener.IsListening)

   104                 return;

   105             // Call EndGetContext to complete the asynchronous operation.

   106             HttpListenerContext context = listener.EndGetContext(result);

   107             HttpListenerRequest request = context.Request;

   109             var requestedFile = request.RawUrl.Substring(1);

   110             if (requestedFile == "data.json")

   111             {

   112                 sendJSON(context);

   113                 return;

   114             }

   116             if (requestedFile.Contains("images_icon"))

   117             {

   118                 serveResourceImage(context, requestedFile.Replace("images_icon/", ""));

   119                 return;

   120             }

   122             //default file to be served

   123             if (string.IsNullOrEmpty(requestedFile))

   124                 requestedFile = "index.html";

   126             string[] splits = requestedFile.Split('.');

   127             string ext = splits[splits.Length - 1];

   128             serveResourceFile(context, "Web." + requestedFile.Replace('/', '.'), ext);

   129         }

   131         private void serveResourceFile(HttpListenerContext context ,string name, string ext) {

   133           //hack! resource names do not support the hyphen

   134           name = "OpenHardwareMonitor.Resources." + name.Replace("custom-theme", "custom_theme");

   136           string[] names =

   137             Assembly.GetExecutingAssembly().GetManifestResourceNames();

   138           for (int i = 0; i < names.Length; i++) {

   139             if (names[i].Replace('\\', '.') == name) {

   140               using (Stream stream = Assembly.GetExecutingAssembly().

   141                 GetManifestResourceStream(names[i])) {

   142                     context.Response.ContentType = getcontentType("." + ext);

   143                     context.Response.ContentLength64 = stream.Length;

   144                     byte[] buffer = new byte[512 * 1024];

   145                     int len;

   146                     while ((len = stream.Read(buffer, 0, buffer.Length)) > 0)

   147                     {

   148                         context.Response.OutputStream.Write(buffer, 0, len);

   149                     }

   150                     context.Response.OutputStream.Close();

   151                 }

   152               return;

   153             }

   154           }

   155           context.Response.OutputStream.Close();

   156           context.Response.StatusCode = 404;

   157           context.Response.Close();

   158         }

   160         private void serveResourceImage(HttpListenerContext context ,string name) {

   161           name = "OpenHardwareMonitor.Resources." + name;

   163           string[] names =

   164             Assembly.GetExecutingAssembly().GetManifestResourceNames();

   165           for (int i = 0; i < names.Length; i++) {

   166             if (names[i].Replace('\\', '.') == name) {

   167               using (Stream stream = Assembly.GetExecutingAssembly().

   168                 GetManifestResourceStream(names[i])) {

   170                 Image image = Image.FromStream(stream);

   171                 context.Response.ContentType = "image/png";

   172                 using (MemoryStream ms = new MemoryStream())

   173                 {

   174                     image.Save(ms, ImageFormat.Png);

   175                     ms.WriteTo(context.Response.OutputStream);

   176                 }

   177                 context.Response.OutputStream.Close();

   178                 image.Dispose();

   179                 return;

   180               }

   181             }

   182           }

   183           context.Response.OutputStream.Close();

   184           context.Response.StatusCode = 404;

   185           context.Response.Close();

   186         }

   188         private void sendJSON(HttpListenerContext context)

   189         {

   191             string JSON = "{\"id\": 0, \"Text\": \"Sensor\", \"Children\": [";

   192             nodeCount = 1;

   193             JSON += generateJSON(root);

   194             JSON += "]";

   195             JSON += ", \"Min\": \"Min\"";

   196             JSON += ", \"Value\": \"Value\"";

   197             JSON += ", \"Max\": \"Max\"";

   198             JSON += ", \"ImageURL\": \"\"";

   199             JSON += "}";

   201             var responseContent = JSON;

   202             byte[] buffer = Encoding.UTF8.GetBytes(responseContent);

   204             context.Response.ContentLength64 = buffer.Length;

   205             context.Response.ContentType = "application/json";

   207             Stream outputStream = context.Response.OutputStream;

   208             outputStream.Write(buffer, 0, buffer.Length);

   209             outputStream.Close();

   211         }

   213         private string generateJSON(Node n)

   214         {

   215             string JSON = "{\"id\": " + nodeCount + ", \"Text\": \"" + n.Text + "\", \"Children\": [";

   216             nodeCount++;

   218             foreach (Node child in n.Nodes)

   219                 JSON += generateJSON(child) + ", ";

   220             if (JSON.EndsWith(", "))

   221                 JSON = JSON.Remove(JSON.LastIndexOf(","));

   222             JSON += "]";

   224             if (n is SensorNode)

   225             {

   226                 JSON += ", \"Min\": \"" + ((SensorNode)n).Min + "\"";

   227                 JSON += ", \"Value\": \"" + ((SensorNode)n).Value + "\"";

   228                 JSON += ", \"Max\": \"" + ((SensorNode)n).Max + "\"";

   229                 JSON += ", \"ImageURL\": \"images/transparent.png\"";

   230             }

   231             else if (n is HardwareNode)

   232             {

   233                 JSON += ", \"Min\": \"\"";

   234                 JSON += ", \"Value\": \"\"";

   235                 JSON += ", \"Max\": \"\"";

   236                 JSON += ", \"ImageURL\": \"images_icon/" + getHardwareImageFile((HardwareNode)n) + "\"";

   237             }

   238             else if (n is TypeNode)

   239             {

   240                 JSON += ", \"Min\": \"\"";

   241                 JSON += ", \"Value\": \"\"";

   242                 JSON += ", \"Max\": \"\"";

   243                 JSON += ", \"ImageURL\": \"images_icon/" + getTypeImageFile((TypeNode)n) + "\"";

   244             }

   245             else

   246             {

   247                 JSON += ", \"Min\": \"\"";

   248                 JSON += ", \"Value\": \"\"";

   249                 JSON += ", \"Max\": \"\"";

   250                 JSON += ", \"ImageURL\": \"images_icon/computer.png\"";

   251             }

   253             JSON += "}";

   254             return JSON;

   255         }

   257         private static void returnFile(HttpListenerContext context, string filePath)

   258         {

   259             context.Response.ContentType = getcontentType(Path.GetExtension(filePath));

   260             const int bufferSize = 1024 * 512; //512KB

   261             var buffer = new byte[bufferSize];

   262             using (var fs = File.OpenRead(filePath))

   263             {

   265                 context.Response.ContentLength64 = fs.Length;

   266                 int read;

   267                 while ((read = fs.Read(buffer, 0, buffer.Length)) > 0)

   268                     context.Response.OutputStream.Write(buffer, 0, read);

   269             }

   271             context.Response.OutputStream.Close();

   272         }

   274         private static string getcontentType(string extension)

   275         {

   276             switch (extension)

   277             {

   278                 case ".avi": return "video/x-msvideo";

   279                 case ".css": return "text/css";

   280                 case ".doc": return "application/msword";

   281                 case ".gif": return "image/gif";

   282                 case ".htm":

   283                 case ".html": return "text/html";

   284                 case ".jpg":

   285                 case ".jpeg": return "image/jpeg";

   286                 case ".js": return "application/x-javascript";

   287                 case ".mp3": return "audio/mpeg";

   288                 case ".png": return "image/png";

   289                 case ".pdf": return "application/pdf";

   290                 case ".ppt": return "application/vnd.ms-powerpoint";

   291                 case ".zip": return "application/zip";

   292                 case ".txt": return "text/plain";

   293                 default: return "application/octet-stream";

   294             }

   295         }

   297         private static string getHardwareImageFile(HardwareNode hn)

   298         {

   300             switch (hn.Hardware.HardwareType)

   301             {

   302                 case HardwareType.CPU:

   303                     return "cpu.png";

   304                 case HardwareType.GpuNvidia:

   305                     return "nvidia.png";

   306                 case HardwareType.GpuAti:

   307                     return "ati.png";

   308                 case HardwareType.HDD:

   309                     return "hdd.png";

   310                 case HardwareType.Heatmaster:

   311                     return "bigng.png";

   312                 case HardwareType.Mainboard:

   313                     return "mainboard.png";

   314                 case HardwareType.SuperIO:

   315                     return "chip.png";

   316                 case HardwareType.TBalancer:

   317                     return "bigng.png";

   318                 default:

   319                     return "cpu.png";

   320             }

   322         }

   324         private static string getTypeImageFile(TypeNode tn)

   325         {

   327             switch (tn.SensorType)

   328             {

   329                 case SensorType.Voltage:

   330                     return "voltage.png";

   331                 case SensorType.Clock:

   332                     return "clock.png";

   333                 case SensorType.Load:

   334                     return "load.png";

   335                 case SensorType.Temperature:

   336                     return "temperature.png";

   337                 case SensorType.Fan:

   338                     return "fan.png";

   339                 case SensorType.Flow:

   340                     return "flow.png";

   341                 case SensorType.Control:

   342                     return "control.png";

   343                 case SensorType.Level:

   344                     return "level.png";

   345                 case SensorType.Power:

   346                     return "power.png";

   347                 default:

   348                     return "power.png";

   349             }

   351         }

   353         public int ListenerPort

   354         {

   355             get { return listenerPort; }

   356             set { listenerPort = value; }

   357         }

   359         ~HttpServer()

   360         {

   361             stopHTTPListener();

   362             listener.Abort();

   363         }

   365         public void Quit()

   366         {

   367             stopHTTPListener();

   368             listener.Abort();

   369         }

   370     }

   371 }

author	moel.mich
	Wed, 11 Jul 2012 22:28:39 +0000
changeset 361	0a386ef7d5bb
child 370	8e4dedc41924
permissions	-rw-r--r--