590 lines
19 KiB
C#
590 lines
19 KiB
C#
// Mozilla Public License 2.0
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// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Copyright (C) LibreHardwareMonitor and Contributors
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// All Rights Reserved
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using System;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Net;
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using System.Reflection;
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using System.Text;
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using System.Threading;
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using LibreHardwareMonitor.UI;
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using LibreHardwareMonitor.Hardware;
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using System.Web;
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using System.Collections.Specialized;
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using System.Collections.Generic;
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using System.Globalization;
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using Newtonsoft.Json.Linq;
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namespace LibreHardwareMonitor.Utilities
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{
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public class HttpServer
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{
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private readonly HttpListener _listener;
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private Thread _listenerThread;
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private readonly Node _root;
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public HttpServer(Node node, int port)
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{
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_root = node;
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ListenerPort = port;
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try
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{
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_listener = new HttpListener { IgnoreWriteExceptions = true };
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}
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catch (PlatformNotSupportedException)
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{
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_listener = null;
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}
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}
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public bool PlatformNotSupported
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{
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get
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{
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return _listener == null;
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}
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}
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public bool StartHttpListener()
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{
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if (PlatformNotSupported)
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return false;
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try
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{
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if (_listener.IsListening)
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return true;
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string prefix = "http://+:" + ListenerPort + "/";
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_listener.Prefixes.Clear();
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_listener.Prefixes.Add(prefix);
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_listener.Start();
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if (_listenerThread == null)
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{
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_listenerThread = new Thread(HandleRequests);
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_listenerThread.Start();
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}
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}
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catch (Exception)
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{
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return false;
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}
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return true;
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}
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public bool StopHttpListener()
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{
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if (PlatformNotSupported)
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return false;
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try
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{
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_listenerThread?.Abort();
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_listener.Stop();
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_listenerThread = null;
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}
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catch (HttpListenerException)
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{ }
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catch (ThreadAbortException)
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{ }
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catch (NullReferenceException)
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{ }
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catch (Exception)
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{ }
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return true;
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}
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private void HandleRequests()
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{
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while (_listener.IsListening)
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{
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IAsyncResult context = _listener.BeginGetContext(ListenerCallback, _listener);
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context.AsyncWaitHandle.WaitOne();
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}
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}
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public static IDictionary<string, string> ToDictionary(NameValueCollection col)
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{
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IDictionary<string, string> dict = new Dictionary<string, string>();
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foreach (string k in col.AllKeys)
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{
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dict.Add(k, col[k]);
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}
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return dict;
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}
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public SensorNode FindSensor(Node node, string id)
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{
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if (node is SensorNode sNode)
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{
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if (sNode.Sensor.Identifier.ToString() == id)
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return sNode;
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}
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foreach (Node child in node.Nodes)
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{
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SensorNode s = FindSensor(child, id);
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if (s != null)
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{
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return s;
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}
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}
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return null;
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}
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public void SetSensorControlValue(SensorNode sNode, string value)
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{
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if (sNode.Sensor.Control == null)
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{
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throw new ArgumentException("Specified sensor '" + sNode.Sensor.Identifier + "' can not be set");
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}
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if (value == "null")
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{
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sNode.Sensor.Control.SetDefault();
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}
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else
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{
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sNode.Sensor.Control.SetSoftware(float.Parse(value, CultureInfo.InvariantCulture));
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}
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}
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//Handles "/Sensor" requests.
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//Parameters are taken from the query part of the URL.
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//Get:
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//http://localhost:8085/Sensor?action=Get&id=/some/node/path/0
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//The output is either:
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//{"result":"fail","message":"Some error message"}
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//or:
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//{"result":"ok","value":42.0, "format":"{0:F2} RPM"}
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//
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//Set:
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//http://localhost:8085/Sensor?action=Set&id=/some/node/path/0&value=42.0
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//http://localhost:8085/Sensor?action=Set&id=/some/node/path/0&value=null
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//The output is either:
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//{"result":"fail","message":"Some error message"}
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//or:
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//{"result":"ok"}
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private void HandleSensorRequest(HttpListenerRequest request, JObject result)
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{
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IDictionary<string, string> dict = ToDictionary(HttpUtility.ParseQueryString(request.Url.Query));
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if (dict.ContainsKey("action"))
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{
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if (dict.ContainsKey("id"))
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{
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SensorNode sNode = FindSensor(_root, dict["id"]);
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if (sNode == null)
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{
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throw new ArgumentException("Unknown id " + dict["id"] + " specified");
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}
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switch (dict["action"])
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{
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case "Set" when dict.ContainsKey("value"):
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SetSensorControlValue(sNode, dict["value"]);
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break;
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case "Set":
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throw new ArgumentNullException("No value provided");
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case "Get":
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result["value"] = sNode.Sensor.Value;
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result["format"] = sNode.Format;
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break;
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default:
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throw new ArgumentException("Unknown action type " + dict["action"]);
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}
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}
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else
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{
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throw new ArgumentNullException("No id provided");
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}
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}
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else
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{
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throw new ArgumentNullException("No action provided");
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}
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}
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//Handles http POST requests in a REST like manner.
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//Currently the only supported base URL is http://localhost:8085/Sensor.
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private string HandlePostRequest(HttpListenerRequest request)
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{
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JObject result = new JObject { ["result"] = "ok" };
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try
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{
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if (request.Url.Segments.Length == 2)
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{
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if (request.Url.Segments[1] == "Sensor")
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{
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HandleSensorRequest(request, result);
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}
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else
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{
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throw new ArgumentException("Invalid URL ('" + request.Url.Segments[1] + "'), possible values: ['Sensor']");
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}
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}
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else
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throw new ArgumentException("Empty URL, possible values: ['Sensor']");
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}
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catch (Exception e)
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{
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result["result"] = "fail";
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result["message"] = e.ToString();
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}
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#if DEBUG
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return result.ToString(Newtonsoft.Json.Formatting.Indented);
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#else
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return result.ToString(Newtonsoft.Json.Formatting.None);
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#endif
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}
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private void ListenerCallback(IAsyncResult result)
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{
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HttpListener listener = (HttpListener)result.AsyncState;
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if (listener == null || !listener.IsListening)
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return;
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// Call EndGetContext to complete the asynchronous operation.
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HttpListenerContext context;
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try
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{
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context = listener.EndGetContext(result);
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}
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catch (Exception)
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{
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return;
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}
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HttpListenerRequest request = context.Request;
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if (request.HttpMethod == "POST")
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{
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string postResult = HandlePostRequest(request);
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Stream output = context.Response.OutputStream;
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byte[] utfBytes = Encoding.UTF8.GetBytes(postResult);
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context.Response.AddHeader("Cache-Control", "no-cache");
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context.Response.ContentLength64 = utfBytes.Length;
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context.Response.ContentType = "application/json";
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output.Write(utfBytes, 0, utfBytes.Length);
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output.Close();
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}
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else if (request.HttpMethod == "GET")
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{
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string requestedFile = request.RawUrl.Substring(1);
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if (requestedFile == "data.json")
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{
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SendJson(context.Response);
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return;
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}
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if (requestedFile.Contains("images_icon"))
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{
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ServeResourceImage(context.Response,
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requestedFile.Replace("images_icon/", string.Empty));
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return;
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}
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// default file to be served
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if (string.IsNullOrEmpty(requestedFile))
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requestedFile = "index.html";
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string[] splits = requestedFile.Split('.');
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string ext = splits[splits.Length - 1];
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ServeResourceFile(context.Response, "Web." + requestedFile.Replace('/', '.'), ext);
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}
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else
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{
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context.Response.StatusCode = 404;
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context.Response.Close();
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}
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}
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private void ServeResourceFile(HttpListenerResponse response, string name, string ext)
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{
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// resource names do not support the hyphen
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name = "LibreHardwareMonitor.Resources." +
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name.Replace("custom-theme", "custom_theme");
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string[] names =
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Assembly.GetExecutingAssembly().GetManifestResourceNames();
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for (int i = 0; i < names.Length; i++)
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{
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if (names[i].Replace('\\', '.') == name)
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{
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using (Stream stream = Assembly.GetExecutingAssembly().
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GetManifestResourceStream(names[i]))
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{
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response.ContentType = GetContentType("." + ext);
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response.ContentLength64 = stream.Length;
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byte[] buffer = new byte[512 * 1024];
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try
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{
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Stream output = response.OutputStream;
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int len;
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while ((len = stream.Read(buffer, 0, buffer.Length)) > 0)
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{
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output.Write(buffer, 0, len);
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}
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output.Flush();
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output.Close();
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response.Close();
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}
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catch (HttpListenerException)
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{
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}
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catch (InvalidOperationException)
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{
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}
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return;
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}
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}
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}
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response.StatusCode = 404;
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response.Close();
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}
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private void ServeResourceImage(HttpListenerResponse response, string name)
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{
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name = "LibreHardwareMonitor.Resources." + name;
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string[] names = Assembly.GetExecutingAssembly().GetManifestResourceNames();
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for (int i = 0; i < names.Length; i++)
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{
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if (names[i].Replace('\\', '.') == name)
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{
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using (Stream stream = Assembly.GetExecutingAssembly().
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GetManifestResourceStream(names[i]))
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{
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Image image = Image.FromStream(stream);
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response.ContentType = "image/png";
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try
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{
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Stream output = response.OutputStream;
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using (MemoryStream ms = new MemoryStream())
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{
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image.Save(ms, ImageFormat.Png);
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ms.WriteTo(output);
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}
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output.Close();
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}
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catch (HttpListenerException)
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{
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}
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image.Dispose();
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response.Close();
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return;
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}
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}
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}
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response.StatusCode = 404;
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response.Close();
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}
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private void SendJson(HttpListenerResponse response)
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{
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JObject json = new JObject();
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int nodeIndex = 0;
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json["id"] = nodeIndex++;
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json["Text"] = "Sensor";
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json["Min"] = "Min";
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json["Value"] = "Value";
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json["Max"] = "Max";
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json["ImageURL"] = string.Empty;
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JArray children = new JArray { GenerateJsonForNode(_root, ref nodeIndex) };
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json["Children"] = children;
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#if DEBUG
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string responseContent = json.ToString(Newtonsoft.Json.Formatting.Indented);
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#else
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var responseContent = json.ToString(Newtonsoft.Json.Formatting.None);
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#endif
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byte[] buffer = Encoding.UTF8.GetBytes(responseContent);
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response.AddHeader("Cache-Control", "no-cache");
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response.ContentLength64 = buffer.Length;
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response.ContentType = "application/json";
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try
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{
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Stream output = response.OutputStream;
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output.Write(buffer, 0, buffer.Length);
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output.Close();
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}
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catch (HttpListenerException)
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{
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}
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response.Close();
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}
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private JObject GenerateJsonForNode(Node n, ref int nodeIndex)
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{
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JObject jsonNode = new JObject
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{
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["id"] = nodeIndex++,
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["Text"] = n.Text,
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["Min"] = string.Empty,
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["Value"] = string.Empty,
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["Max"] = string.Empty
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};
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if (n is SensorNode)
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{
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jsonNode["SensorId"] = ((SensorNode)n).Sensor.Identifier.ToString();
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jsonNode["Type"] = ((SensorNode)n).Sensor.SensorType.ToString();
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jsonNode["Min"] = ((SensorNode)n).Min;
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jsonNode["Value"] = ((SensorNode)n).Value;
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jsonNode["Max"] = ((SensorNode)n).Max;
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jsonNode["ImageURL"] = "images/transparent.png";
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}
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else if (n is HardwareNode hardwareNode)
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{
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jsonNode["ImageURL"] = "images_icon/" + GetHardwareImageFile(hardwareNode);
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}
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else if (n is TypeNode typeNode)
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{
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jsonNode["ImageURL"] = "images_icon/" + GetTypeImageFile(typeNode);
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}
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else
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{
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jsonNode["ImageURL"] = "images_icon/computer.png";
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}
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JArray children = new JArray();
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foreach (Node child in n.Nodes)
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{
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children.Add(GenerateJsonForNode(child, ref nodeIndex));
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}
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jsonNode["Children"] = children;
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return jsonNode;
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}
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private static string GetContentType(string extension)
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{
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switch (extension)
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{
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case ".avi": return "video/x-msvideo";
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case ".css": return "text/css";
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case ".doc": return "application/msword";
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case ".gif": return "image/gif";
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case ".htm":
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case ".html": return "text/html";
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case ".jpg":
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case ".jpeg": return "image/jpeg";
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case ".js": return "application/x-javascript";
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case ".mp3": return "audio/mpeg";
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case ".png": return "image/png";
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case ".pdf": return "application/pdf";
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case ".ppt": return "application/vnd.ms-powerpoint";
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case ".zip": return "application/zip";
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case ".txt": return "text/plain";
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default: return "application/octet-stream";
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}
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}
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private static string GetHardwareImageFile(HardwareNode hn)
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{
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switch (hn.Hardware.HardwareType)
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{
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case HardwareType.Cpu:
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return "cpu.png";
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case HardwareType.GpuNvidia:
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return "nvidia.png";
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case HardwareType.GpuAmd:
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return "ati.png";
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case HardwareType.Storage:
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return "hdd.png";
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case HardwareType.Heatmaster:
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return "bigng.png";
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case HardwareType.Motherboard:
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return "mainboard.png";
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case HardwareType.SuperIO:
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return "chip.png";
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case HardwareType.TBalancer:
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return "bigng.png";
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case HardwareType.Memory:
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return "ram.png";
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case HardwareType.AquaComputer:
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return "acicon.png";
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case HardwareType.Network:
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return "nic.png";
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default:
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return "cpu.png";
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}
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}
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private static string GetTypeImageFile(TypeNode tn)
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{
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switch (tn.SensorType)
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{
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case SensorType.Voltage:
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return "voltage.png";
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case SensorType.Clock:
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return "clock.png";
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case SensorType.Load:
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return "load.png";
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case SensorType.Temperature:
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return "temperature.png";
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case SensorType.Fan:
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return "fan.png";
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case SensorType.Flow:
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return "flow.png";
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case SensorType.Control:
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return "control.png";
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case SensorType.Level:
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return "level.png";
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case SensorType.Power:
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return "power.png";
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case SensorType.Throughput:
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return "internetspeed.png";
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default:
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return "power.png";
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}
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}
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public int ListenerPort { get; set; }
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~HttpServer()
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{
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if (PlatformNotSupported)
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return;
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StopHttpListener();
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_listener.Abort();
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}
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public void Quit()
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{
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if (PlatformNotSupported)
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return;
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StopHttpListener();
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_listener.Abort();
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}
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}
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}
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