1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.IO;
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4 | using System.Net;
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5 | using System.Net.Sockets;
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6 | using System.Reflection;
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7 | using System.Text;
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8 | using System.Threading;
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9 | using AllocsFixes.FileCache;
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10 | using AllocsFixes.NetConnections.Servers.Web.Handlers;
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11 | using UnityEngine;
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12 | using UnityEngine.Profiling;
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13 |
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14 | namespace AllocsFixes.NetConnections.Servers.Web {
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15 | public class Web : IConsoleServer {
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16 | private const int GUEST_PERMISSION_LEVEL = 2000;
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17 | public static int handlingCount;
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18 | public static int currentHandlers;
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19 | public static long totalHandlingTime = 0;
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20 | private readonly HttpListener _listener = new HttpListener ();
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21 | private readonly string dataFolder;
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22 | private readonly Dictionary<string, PathHandler> handlers = new CaseInsensitiveStringDictionary<PathHandler> ();
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23 | private readonly bool useStaticCache;
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24 |
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25 | public ConnectionHandler connectionHandler;
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26 |
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27 | public Web () {
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28 | try {
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29 | int webPort = GamePrefs.GetInt (EnumGamePrefs.ControlPanelPort);
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30 | if (webPort < 1 || webPort > 65533) {
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31 | Log.Out ("Webserver not started (ControlPanelPort not within 1-65533)");
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32 | return;
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33 | }
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34 |
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35 | if (!Directory.Exists (Path.GetDirectoryName (Assembly.GetExecutingAssembly ().Location) +
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36 | "/webserver")) {
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37 | Log.Out ("Webserver not started (folder \"webserver\" not found in WebInterface mod folder)");
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38 | return;
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39 | }
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40 |
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41 | // TODO: Read from config
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42 | useStaticCache = false;
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43 |
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44 | dataFolder = Path.GetDirectoryName (Assembly.GetExecutingAssembly ().Location) + "/webserver";
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45 |
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46 | if (!HttpListener.IsSupported) {
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47 | Log.Out ("Webserver not started (needs Windows XP SP2, Server 2003 or later or Mono)");
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48 | return;
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49 | }
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50 |
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51 | handlers.Add (
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52 | "/index.htm",
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53 | new SimpleRedirectHandler ("/static/index.html"));
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54 | handlers.Add (
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55 | "/favicon.ico",
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56 | new SimpleRedirectHandler ("/static/favicon.ico"));
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57 | handlers.Add (
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58 | "/session/",
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59 | new SessionHandler (
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60 | "/session/",
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61 | dataFolder,
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62 | this)
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63 | );
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64 | handlers.Add (
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65 | "/userstatus",
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66 | new UserStatusHandler ()
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67 | );
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68 | if (useStaticCache) {
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69 | handlers.Add (
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70 | "/static/",
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71 | new StaticHandler (
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72 | "/static/",
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73 | dataFolder,
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74 | new SimpleCache (),
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75 | false)
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76 | );
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77 | } else {
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78 | handlers.Add (
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79 | "/static/",
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80 | new StaticHandler (
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81 | "/static/",
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82 | dataFolder,
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83 | new DirectAccess (),
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84 | false)
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85 | );
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86 | }
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87 |
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88 | handlers.Add (
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89 | "/itemicons/",
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90 | new ItemIconHandler (
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91 | "/itemicons/",
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92 | true)
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93 | );
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94 |
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95 | handlers.Add (
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96 | "/map/",
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97 | new StaticHandler (
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98 | "/map/",
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99 | GameUtils.GetSaveGameDir () + "/map",
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100 | MapRendering.MapRendering.GetTileCache (),
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101 | false,
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102 | "web.map")
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103 | );
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104 |
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105 | handlers.Add (
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106 | "/api/",
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107 | new ApiHandler ("/api/")
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108 | );
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109 |
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110 | connectionHandler = new ConnectionHandler ();
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111 |
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112 | _listener.Prefixes.Add (string.Format ("http://*:{0}/", webPort + 2));
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113 | _listener.Start ();
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114 |
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115 | SdtdConsole.Instance.RegisterServer (this);
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116 |
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117 | _listener.BeginGetContext (HandleRequest, _listener);
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118 |
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119 | Log.Out ("Started Webserver on " + (webPort + 2));
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120 | } catch (Exception e) {
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121 | Log.Out ("Error in Web.ctor: " + e);
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122 | }
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123 | }
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124 |
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125 | public void Disconnect () {
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126 | try {
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127 | _listener.Stop ();
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128 | _listener.Close ();
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129 | } catch (Exception e) {
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130 | Log.Out ("Error in Web.Disconnect: " + e);
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131 | }
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132 | }
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133 |
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134 | public void SendLine (string line) {
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135 | connectionHandler.SendLine (line);
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136 | }
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137 |
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138 | public void SendLog (string text, string trace, LogType type) {
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139 | // Do nothing, handled by LogBuffer internally
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140 | }
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141 |
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142 | public static bool isSslRedirected (HttpListenerRequest req) {
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143 | string proto = req.Headers ["X-Forwarded-Proto"];
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144 | if (!string.IsNullOrEmpty (proto)) {
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145 | return proto.Equals ("https", StringComparison.OrdinalIgnoreCase);
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146 | }
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147 |
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148 | return false;
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149 | }
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150 |
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151 | private readonly Version HttpProtocolVersion = new Version(1, 1);
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152 |
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153 | #if ENABLE_PROFILER
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154 | private readonly CustomSampler authSampler = CustomSampler.Create ("Auth");
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155 | private readonly CustomSampler handlerSampler = CustomSampler.Create ("Handler");
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156 | #endif
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157 |
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158 | private void HandleRequest (IAsyncResult result) {
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159 | if (!_listener.IsListening) {
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160 | return;
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161 | }
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162 |
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163 | Interlocked.Increment (ref handlingCount);
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164 | Interlocked.Increment (ref currentHandlers);
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165 |
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166 | // MicroStopwatch msw = new MicroStopwatch ();
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167 | #if ENABLE_PROFILER
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168 | Profiler.BeginThreadProfiling ("AllocsMods", "WebRequest");
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169 | HttpListenerContext ctx = _listener.EndGetContext (result);
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170 | try {
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171 | #else
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172 | HttpListenerContext ctx = _listener.EndGetContext (result);
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173 | _listener.BeginGetContext (HandleRequest, _listener);
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174 | #endif
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175 | try {
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176 | HttpListenerRequest request = ctx.Request;
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177 | HttpListenerResponse response = ctx.Response;
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178 | response.SendChunked = false;
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179 |
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180 | response.ProtocolVersion = HttpProtocolVersion;
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181 |
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182 | WebConnection conn;
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183 | #if ENABLE_PROFILER
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184 | authSampler.Begin ();
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185 | #endif
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186 | int permissionLevel = DoAuthentication (request, out conn);
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187 | #if ENABLE_PROFILER
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188 | authSampler.End ();
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189 | #endif
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190 |
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191 |
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192 | //Log.Out ("Login status: conn!=null: {0}, permissionlevel: {1}", conn != null, permissionLevel);
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193 |
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194 |
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195 | if (conn != null) {
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196 | Cookie cookie = new Cookie ("sid", conn.SessionID, "/");
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197 | cookie.Expired = false;
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198 | cookie.Expires = new DateTime (2020, 1, 1);
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199 | cookie.HttpOnly = true;
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200 | cookie.Secure = false;
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201 | response.AppendCookie (cookie);
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202 | }
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203 |
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204 | // No game yet -> fail request
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205 | if (GameManager.Instance.World == null) {
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206 | response.StatusCode = (int) HttpStatusCode.ServiceUnavailable;
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207 | return;
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208 | }
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209 |
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210 | if (request.Url.AbsolutePath.Length < 2) {
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211 | handlers ["/index.htm"].HandleRequest (request, response, conn, permissionLevel);
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212 | return;
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213 | } else {
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214 | foreach (KeyValuePair<string, PathHandler> kvp in handlers) {
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215 | if (request.Url.AbsolutePath.StartsWith (kvp.Key)) {
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216 | if (!kvp.Value.IsAuthorizedForHandler (conn, permissionLevel)) {
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217 | response.StatusCode = (int) HttpStatusCode.Forbidden;
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218 | if (conn != null) {
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219 | //Log.Out ("Web.HandleRequest: user '{0}' not allowed to access '{1}'", conn.SteamID, kvp.Value.ModuleName);
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220 | }
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221 | } else {
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222 | #if ENABLE_PROFILER
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223 | handlerSampler.Begin ();
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224 | #endif
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225 | kvp.Value.HandleRequest (request, response, conn, permissionLevel);
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226 | #if ENABLE_PROFILER
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227 | handlerSampler.End ();
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228 | #endif
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229 | }
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230 |
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231 | return;
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232 | }
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233 | }
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234 | }
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235 |
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236 | // Not really relevant for non-debugging purposes:
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237 | //Log.Out ("Error in Web.HandleRequest(): No handler found for path \"" + request.Url.AbsolutePath + "\"");
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238 | response.StatusCode = (int) HttpStatusCode.NotFound;
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239 | } catch (IOException e) {
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240 | if (e.InnerException is SocketException) {
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241 | Log.Out ("Error in Web.HandleRequest(): Remote host closed connection: " +
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242 | e.InnerException.Message);
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243 | } else {
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244 | Log.Out ("Error (IO) in Web.HandleRequest(): " + e);
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245 | }
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246 | } catch (Exception e) {
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247 | Log.Out ("Error in Web.HandleRequest(): " + e);
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248 | } finally {
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249 | if (ctx != null && !ctx.Response.SendChunked) {
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250 | ctx.Response.Close ();
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251 | }
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252 |
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253 | // msw.Stop ();
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254 | // totalHandlingTime += msw.ElapsedMicroseconds;
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255 | // Log.Out ("Web.HandleRequest(): Took {0} µs", msw.ElapsedMicroseconds);
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256 | Interlocked.Decrement (ref currentHandlers);
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257 | }
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258 | #if ENABLE_PROFILER
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259 | } finally {
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260 | _listener.BeginGetContext (HandleRequest, _listener);
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261 | Profiler.EndThreadProfiling ();
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262 | }
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263 | #endif
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264 | }
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265 |
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266 | private int DoAuthentication (HttpListenerRequest _req, out WebConnection _con) {
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267 | _con = null;
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268 |
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269 | string sessionId = null;
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270 | if (_req.Cookies ["sid"] != null) {
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271 | sessionId = _req.Cookies ["sid"].Value;
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272 | }
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273 |
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274 | if (!string.IsNullOrEmpty (sessionId)) {
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275 | WebConnection con = connectionHandler.IsLoggedIn (sessionId, _req.RemoteEndPoint.Address);
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276 | if (con != null) {
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277 | _con = con;
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278 | return GameManager.Instance.adminTools.GetAdminToolsClientInfo (_con.SteamID.ToString ())
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279 | .PermissionLevel;
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280 | }
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281 | }
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282 |
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283 | if (_req.QueryString ["adminuser"] != null && _req.QueryString ["admintoken"] != null) {
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284 | WebPermissions.AdminToken admin = WebPermissions.Instance.GetWebAdmin (_req.QueryString ["adminuser"],
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285 | _req.QueryString ["admintoken"]);
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286 | if (admin != null) {
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287 | return admin.permissionLevel;
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288 | }
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289 |
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290 | Log.Warning ("Invalid Admintoken used from " + _req.RemoteEndPoint);
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291 | }
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292 |
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293 | if (_req.Url.AbsolutePath.StartsWith ("/session/verify", StringComparison.OrdinalIgnoreCase)) {
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294 | try {
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295 | ulong id = OpenID.Validate (_req);
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296 | if (id > 0) {
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297 | WebConnection con = connectionHandler.LogIn (id, _req.RemoteEndPoint.Address);
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298 | _con = con;
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299 | int level = GameManager.Instance.adminTools.GetAdminToolsClientInfo (id.ToString ())
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300 | .PermissionLevel;
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301 | Log.Out ("Steam OpenID login from {0} with ID {1}, permission level {2}",
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302 | _req.RemoteEndPoint.ToString (), con.SteamID, level);
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303 | return level;
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304 | }
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305 |
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306 | Log.Out ("Steam OpenID login failed from {0}", _req.RemoteEndPoint.ToString ());
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307 | } catch (Exception e) {
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308 | Log.Error ("Error validating login:");
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309 | Log.Exception (e);
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310 | }
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311 | }
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312 |
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313 | return GUEST_PERMISSION_LEVEL;
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314 | }
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315 |
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316 | public static void SetResponseTextContent (HttpListenerResponse resp, string text) {
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317 | byte[] buf = Encoding.UTF8.GetBytes (text);
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318 | resp.ContentLength64 = buf.Length;
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319 | resp.ContentType = "text/html";
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320 | resp.ContentEncoding = Encoding.UTF8;
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321 | resp.OutputStream.Write (buf, 0, buf.Length);
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322 | }
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323 | }
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324 | }
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