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annotate deps/Platinum/Source/Core/PltHttpServer.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Platinum - HTTP Server
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4 |
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5 | Copyright (c) 2004-2008, Plutinosoft, LLC.
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6 | All rights reserved.
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7 | http://www.plutinosoft.com
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8 |
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9 | This program is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU General Public License
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11 | as published by the Free Software Foundation; either version 2
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12 | of the License, or (at your option) any later version.
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13 |
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14 | OEMs, ISVs, VARs and other distributors that combine and
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15 | distribute commercially licensed software with Platinum software
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16 | and do not wish to distribute the source code for the commercially
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17 | licensed software under version 2, or (at your option) any later
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18 | version, of the GNU General Public License (the "GPL") must enter
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19 | into a commercial license agreement with Plutinosoft, LLC.
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20 |
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21 | This program is distributed in the hope that it will be useful,
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22 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | GNU General Public License for more details.
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25 |
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26 | You should have received a copy of the GNU General Public License
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27 | along with this program; see the file LICENSE.txt. If not, write to
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28 | the Free Software Foundation, Inc.,
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29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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30 | http://www.gnu.org/licenses/gpl-2.0.html
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31 |
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32 ****************************************************************/
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33
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34 /*----------------------------------------------------------------------
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35 | includes
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36 +---------------------------------------------------------------------*/
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37 #include "PltTaskManager.h"
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38 #include "PltHttpServer.h"
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39 #include "PltHttp.h"
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40 #include "PltVersion.h"
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41
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42 NPT_SET_LOCAL_LOGGER("platinum.core.http.server")
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43
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44 /*----------------------------------------------------------------------
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45 | PLT_HttpServer::PLT_HttpServer
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46 +---------------------------------------------------------------------*/
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47 PLT_HttpServer::PLT_HttpServer(unsigned int port,
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48 bool port_rebind /* = false */,
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49 NPT_Cardinal max_clients /* = 0 */,
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50 bool reuse_address /* = false */) :
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51 m_TaskManager(new PLT_TaskManager(max_clients)),
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52 m_Port(port),
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53 m_PortRebind(port_rebind),
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54 m_ReuseAddress(reuse_address),
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55 m_HttpListenTask(NULL)
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56 {
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57 }
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58
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59 /*----------------------------------------------------------------------
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60 | PLT_HttpServer::~PLT_HttpServer
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61 +---------------------------------------------------------------------*/
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62 PLT_HttpServer::~PLT_HttpServer()
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63 {
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64 delete m_TaskManager;
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65 }
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66
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67 /*----------------------------------------------------------------------
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68 | PLT_HttpServer::Start
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69 +---------------------------------------------------------------------*/
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70 NPT_Result
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71 PLT_HttpServer::Start()
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72 {
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73 NPT_Result res = NPT_FAILURE;
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74
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75 // if we're given a port for our http server, try it
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76 if (m_Port) {
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77 res = SetListenPort(m_Port, m_ReuseAddress);
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78 // return right away on failure if told not to try to rebind randomly
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79 if (NPT_FAILED(res) && !m_PortRebind) {
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80 NPT_CHECK_SEVERE(res);
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81 }
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82 }
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83
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84 // try random port now
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85 if (!m_Port || NPT_FAILED(res)) {
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86 // randomly try a port for our http server
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87 int retries = 100;
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88 do {
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89 int random = NPT_System::GetRandomInteger();
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90 int port = (unsigned short)(50000 + (random % 15000));
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91 if (NPT_SUCCEEDED(SetListenPort(port, m_ReuseAddress))) {
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92 break;
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93 }
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94 } while (--retries > 0);
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95
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96 if (retries == 0) NPT_CHECK_SEVERE(NPT_FAILURE);
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97 }
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98
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99 m_Port = m_Config.m_ListenPort;
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100
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101 // start a task to listen
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102 m_HttpListenTask = new PLT_HttpServerListenTask(this, &m_Socket, false);
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103 m_TaskManager->StartTask(m_HttpListenTask, NULL, false);
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104
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105 NPT_SocketInfo info;
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106 m_Socket.GetInfo(info);
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107 NPT_LOG_INFO_2("HttpServer listening on %s:%d",
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108 (const char*)info.local_address.GetIpAddress().ToString(),
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109 m_Port);
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110 return NPT_SUCCESS;
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111 }
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112
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113 /*----------------------------------------------------------------------
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114 | PLT_HttpServer::Stop
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115 +---------------------------------------------------------------------*/
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116 NPT_Result
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117 PLT_HttpServer::Stop()
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118 {
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119 if (m_HttpListenTask) {
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120 m_HttpListenTask->Kill();
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121 m_HttpListenTask = NULL;
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122 }
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123
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124 // stop all other pending tasks
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125 m_TaskManager->StopAllTasks();
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126
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127 return NPT_SUCCESS;
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128 }
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129
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130 /*----------------------------------------------------------------------
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131 | PLT_HttpServer::ProcessHttpRequest
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132 +---------------------------------------------------------------------*/
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133 NPT_Result
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134 PLT_HttpServer::ProcessHttpRequest(NPT_HttpRequest& request,
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135 const NPT_HttpRequestContext& context,
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136 NPT_HttpResponse*& response,
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137 bool& headers_only)
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138 {
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139
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140 NPT_LOG_INFO_3("Received %s Request from %s for %s",
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141 (const char*) request.GetMethod(),
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142 (const char*) context.GetRemoteAddress().GetIpAddress().ToString(),
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143 (const char*) request.GetUrl().GetPath());
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144
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145 PLT_LOG_HTTP_MESSAGE(NPT_LOG_LEVEL_FINE, &request);
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146
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147 NPT_HttpRequestHandler* handler = FindRequestHandler(request);
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148 if (handler == NULL) {
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149 response = new NPT_HttpResponse(404, "Not Found", NPT_HTTP_PROTOCOL_1_1);
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150 } else {
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151 // create a repsones object
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152 response = new NPT_HttpResponse(200, "OK", NPT_HTTP_PROTOCOL_1_1);
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153 response->GetHeaders().SetHeader("Server", "Platinum/" PLT_PLATINUM_VERSION_STRING);
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154
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155 // prepare the response
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156 response->SetEntity(new NPT_HttpEntity());
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157
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158 // ask the handler to setup the response
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159 handler->SetupResponse(request, context, *response);
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160
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161 // set headers_only flag
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162 headers_only = (request.GetMethod()==NPT_HTTP_METHOD_HEAD);
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163 }
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164
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165 return NPT_SUCCESS;
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166 }
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167
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168 /*----------------------------------------------------------------------
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169 | PLT_FileServer::GetMimeType
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170 +---------------------------------------------------------------------*/
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171 const char*
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172 PLT_FileServer::GetMimeType(const NPT_String& filename)
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173 {
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174 int last_dot = filename.ReverseFind('.');
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175 if (last_dot > 0) {
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176 NPT_String extension = filename.GetChars()+last_dot+1;
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177 extension.MakeLowercase();
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178
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179 for (unsigned int i=0; i<NPT_ARRAY_SIZE(NPT_HttpFileRequestHandler_DefaultFileTypeMap); i++) {
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180 if (extension == NPT_HttpFileRequestHandler_DefaultFileTypeMap[i].extension) {
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181 return NPT_HttpFileRequestHandler_DefaultFileTypeMap[i].mime_type;
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182 }
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183 }
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184 }
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185
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186 return "application/octet-stream";
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187 }
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188
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189 /*----------------------------------------------------------------------
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190 | PLT_FileServer::ServeFile
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191 +---------------------------------------------------------------------*/
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192 NPT_Result
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193 PLT_FileServer::ServeFile(NPT_HttpResponse& response,
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194 NPT_String file_path,
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195 NPT_Position start,
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196 NPT_Position end,
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197 bool request_is_head)
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198 {
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199 NPT_LargeSize total_len;
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200 NPT_InputStreamReference stream;
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201 NPT_File file(file_path);
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202 NPT_Result result;
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203
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204 // prevent hackers from accessing files outside of our root
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205 if ((file_path.Find("/..") >= 0) || (file_path.Find("\\..") >= 0)) {
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206 response.SetStatus(404, "File Not Found");
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207 return NPT_SUCCESS;
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208 }
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209
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210 if (NPT_FAILED(result = file.Open(NPT_FILE_OPEN_MODE_READ)) ||
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211 NPT_FAILED(result = file.GetInputStream(stream)) ||
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212 NPT_FAILED(result = stream->GetSize(total_len))) {
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213 // file didn't open
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214 response.SetStatus(404, "File Not Found");
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215 return NPT_SUCCESS;
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216 } else {
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217 NPT_HttpEntity* entity = new NPT_HttpEntity();
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218 entity->SetContentLength(total_len);
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219 response.SetEntity(entity);
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220
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221 // set the content type if we can
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222 entity->SetContentType(GetMimeType(file_path));
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223
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224 // request is HEAD, returns without setting a body
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225 if (request_is_head) return NPT_SUCCESS;
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226
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227 // see if it was a byte range request
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228 if (start != (NPT_Position)-1 || end != (NPT_Position)-1) {
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229 // we can only support a range from an offset to the end of the resource for now
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230 // due to the fact we can't limit how much to read from a stream yet
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231 NPT_Position start_offset = (NPT_Position)-1, end_offset = total_len - 1, len;
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232 if (start == (NPT_Position)-1 && end != (NPT_Position)-1) {
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233 // we are asked for the last N=end bytes
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234 // adjust according to total length
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235 if (end >= total_len) {
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236 start_offset = 0;
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237 } else {
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238 start_offset = total_len-end;
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239 }
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240 } else if (start != (NPT_Position)-1) {
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241 start_offset = start;
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242 // if the end is specified but incorrect
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243 // set the end_offset in order to generate a bad response
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244 if (end != (NPT_Position)-1 && end < start) {
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245 end_offset = (NPT_Position)-1;
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246 }
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247 }
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248
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249 // in case the range request was invalid or we can't seek then respond appropriately
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250 if (start_offset == (NPT_Position)-1 || end_offset == (NPT_Position)-1 ||
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251 start_offset > end_offset || NPT_FAILED(stream->Seek(start_offset))) {
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252 response.SetStatus(416, "Requested range not satisfiable");
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253 } else {
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254 len = end_offset - start_offset + 1;
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255 response.SetStatus(206, "Partial Content");
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256 PLT_HttpHelper::SetContentRange(response, start_offset, end_offset, total_len);
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257
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258 entity->SetInputStream(stream);
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259 entity->SetContentLength(len);
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260 }
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261 } else {
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262 entity->SetInputStream(stream);
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263 }
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264 return NPT_SUCCESS;
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265 }
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266 }