src/modules/m_httpd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                     E-mail:
   7  *              <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *          the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include "users.h"
  21 #include "channels.h"
  22 #include "modules.h"
  23 #include "inspsocket.h"
  24 #include "helperfuncs.h"
  25 #include "inspircd.h"
  26 #include "httpd.h"
  27
  28 /* $ModDesc: Provides HTTP serving facilities to modules */
  29
  30 class ModuleHttp;
  31
  32 static Server *Srv;
  33 static ModuleHttp* HttpModule;
  34 extern time_t TIME;
  35 static bool claimed;
  36
  37 enum HttpState
  38 {
  39         HTTP_LISTEN = 0,
  40         HTTP_SERVE_WAIT_REQUEST = 1,
  41         HTTP_SERVE_SEND_DATA = 2
  42 };
  43
  44 class HttpSocket : public InspSocket
  45 {
  46         FileReader* index;
  47         HttpState InternalState;
  48         std::stringstream headers;
  49
  50  public:
  51
  52         HttpSocket(std::string host, int port, bool listening, unsigned long maxtime, FileReader* index_page) : InspSocket(host, port, listening, maxtime), index(index_page)
  53         {
  54                 log(DEBUG,"HttpSocket constructor");
  55                 InternalState = HTTP_LISTEN;
  56         }
  57
  58         HttpSocket(int newfd, char* ip, FileReader* ind) : InspSocket(newfd, ip), index(ind)
  59         {
  60                 InternalState = HTTP_SERVE_WAIT_REQUEST;
  61         }
  62
  63         virtual int OnIncomingConnection(int newsock, char* ip)
  64         {
  65                 if (InternalState == HTTP_LISTEN)
  66                 {
  67                         HttpSocket* s = new HttpSocket(newsock, ip, index);
  68                         Srv->AddSocket(s);
  69                 }
  70                 return true;
  71         }
  72
  73         virtual void OnClose()
  74         {
  75         }
  76
  77         std::string Response(int response)
  78         {
  79                 switch (response)
  80                 {
  81                         case 100:
  82                                 return "CONTINUE";
  83                         case 101:
  84                                 return "SWITCHING PROTOCOLS";
  85                         case 200:
  86                                 return "OK";
  87                         case 201:
  88                                 return "CREATED";
  89                         case 202:
  90                                 return "ACCEPTED";
  91                         case 203:
  92                                 return "NON-AUTHORITATIVE INFORMATION";
  93                         case 204:
  94                                 return "NO CONTENT";
  95                         case 205:
  96                                 return "RESET CONTENT";
  97                         case 206:
  98                                 return "PARTIAL CONTENT";
  99                         case 300:
 100                                 return "MULTIPLE CHOICES";
 101                         case 301:
 102                                 return "MOVED PERMENANTLY";
 103                         case 302:
 104                                 return "FOUND";
 105                         case 303:
 106                                 return "SEE OTHER";
 107                         case 304:
 108                                 return "NOT MODIFIED";
 109                         case 305:
 110                                 return "USE PROXY";
 111                         case 307:
 112                                 return "TEMPORARY REDIRECT";
 113                         case 400:
 114                                 return "BAD REQUEST";
 115                         case 401:
 116                                 return "UNAUTHORIZED";
 117                         case 402:
 118                                 return "PAYMENT REQUIRED";
 119                         case 403:
 120                                 return "FORBIDDEN";
 121                         case 404:
 122                                 return "NOT FOUND";
 123                         case 405:
 124                                 return "METHOD NOT ALLOWED";
 125                         case 406:
 126                                 return "NOT ACCEPTABLE";
 127                         case 407:
 128                                 return "PROXY AUTHENTICATION REQUIRED";
 129                         case 408:
 130                                 return "REQUEST TIMEOUT";
 131                         case 409:
 132                                 return "CONFLICT";
 133                         case 410:
 134                                 return "GONE";
 135                         case 411:
 136                                 return "LENGTH REQUIRED";
 137                         case 412:
 138                                 return "PRECONDITION FAILED";
 139                         case 413:
 140                                 return "REQUEST ENTITY TOO LARGE";
 141                         case 414:
 142                                 return "REQUEST-URI TOO LONG";
 143                         case 415:
 144                                 return "UNSUPPORTED MEDIA TYPE";
 145                         case 416:
 146                                 return "REQUESTED RANGE NOT SATISFIABLE";
 147                         case 417:
 148                                 return "EXPECTATION FAILED";
 149                         case 500:
 150                                 return "INTERNAL SERVER ERROR";
 151                         case 501:
 152                                 return "NOT IMPLEMENTED";
 153                         case 502:
 154                                 return "BAD GATEWAY";
 155                         case 503:
 156                                 return "SERVICE UNAVAILABLE";
 157                         case 504:
 158                                 return "GATEWAY TIMEOUT";
 159                         case 505:
 160                                 return "HTTP VERSION NOT SUPPORTED";
 161                         default:
 162                                 return "WTF";
 163                         break;
 164
 165                 }
 166         }
 167
 168         void SendHeaders(unsigned long size, int response, const std::string &extraheaders)
 169         {
 170                 struct tm *timeinfo = localtime(&TIME);
 171                 this->Write("HTTP/1.1 "+ConvToStr(response)+" "+Response(response)+"\r\nDate: ");
 172                 this->Write(asctime(timeinfo));
 173                 if (extraheaders.empty())
 174                 {
 175                         this->Write("Content-Type: text/html\r\n");
 176                 }
 177                 else
 178                 {
 179                         this->Write(extraheaders);
 180                 }
 181                 this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(size)+
 182                                 "\r\nConnection: close\r\n\r\n");
 183         }
 184
 185         virtual bool OnDataReady()
 186         {
 187                 char* data = this->Read();
 188                 std::string request_type;
 189                 std::string uri;
 190                 std::string http_version;
 191
 192                 /* Check that the data read is a valid pointer and it has some content */
 193                 if (data && *data)
 194                 {
 195                         headers << data;
 196
 197                         if (headers.str().find("\r\n\r\n") != std::string::npos)
 198                         {
 199                                 /* Headers are complete */
 200                                 InternalState = HTTP_SERVE_SEND_DATA;
 201
 202                                 headers >> request_type;
 203                                 headers >> uri;
 204                                 headers >> http_version;
 205
 206                                 if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
 207                                 {
 208                                         SendHeaders(0, 505, "");
 209                                 }
 210                                 else
 211                                 {
 212                                         if ((request_type == "GET") && (uri == "/"))
 213                                         {
 214                                                 SendHeaders(index->ContentSize(), 200, "");
 215                                                 this->Write(index->Contents());
 216                                         }
 217                                         else
 218                                         {
 219                                                 claimed = false;
 220                                                 HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP());
 221                                                 Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
 222                                                 e.Send();
 223
 224                                                 if (!claimed)
 225                                                 {
 226                                                         SendHeaders(0, 404, "");
 227                                                         log(DEBUG,"Page not claimed, 404");
 228                                                 }
 229                                         }
 230                                 }
 231
 232                                 return false;
 233                         }
 234                         return true;
 235                 }
 236                 else
 237                 {
 238                         /* Bastard client closed the socket on us!
 239                          * Oh wait, theyre SUPPOSED to do that!
 240                          */
 241                         return false;
 242                 }
 243         }
 244
 245         void Page(std::stringstream* n, int response, std::string& extraheaders)
 246         {
 247                 log(DEBUG,"Sending page");
 248                 SendHeaders(n->str().length(), response, extraheaders);
 249                 this->Write(n->str());
 250         }
 251 };
 252
 253 class ModuleHttp : public Module
 254 {
 255         int port;
 256         std::string host;
 257         std::string bindip;
 258         std::string indexfile;
 259
 260         FileReader index;
 261
 262         HttpSocket* http;
 263
 264  public:
 265
 266         void ReadConfig()
 267         {
 268                 ConfigReader c;
 269                 this->host = c.ReadValue("http", "host", 0);
 270                 this->bindip = c.ReadValue("http", "ip", 0);
 271                 this->port = c.ReadInteger("http", "port", 0, true);
 272                 this->indexfile = c.ReadValue("http", "index", 0);
 273
 274                 index.LoadFile(this->indexfile);
 275         }
 276
 277         void CreateListener()
 278         {
 279                 http = new HttpSocket(this->bindip, this->port, true, 0, &index);
 280                 if ((http) && (http->GetState() == I_LISTENING))
 281                 {
 282                         Srv->AddSocket(http);
 283                 }
 284         }
 285
 286         ModuleHttp(Server* Me) : Module::Module(Me)
 287         {
 288                 Srv = Me;
 289                 ReadConfig();
 290                 CreateListener();
 291         }
 292
 293         void OnEvent(Event* event)
 294         {
 295         }
 296
 297         char* OnRequest(Request* request)
 298         {
 299                 log(DEBUG,"Got HTTPDocument object");
 300                 claimed = true;
 301                 HTTPDocument* doc = (HTTPDocument*)request->GetData();
 302                 HttpSocket* sock = (HttpSocket*)doc->sock;
 303                 sock->Page(doc->GetDocument(), doc->GetResponseCode(), doc->GetExtraHeaders());
 304                 return NULL;
 305         }
 306
 307         void Implements(char* List)
 308         {
 309                 List[I_OnEvent] = List[I_OnRequest] = 1;
 310         }
 311
 312         virtual ~ModuleHttp()
 313         {
 314                 Srv->DelSocket(http);
 315         }
 316
 317         virtual Version GetVersion()
 318         {
 319                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR|VF_SERVICEPROVIDER);
 320         }
 321 };
 322
 323
 324 class ModuleHttpFactory : public ModuleFactory
 325 {
 326  public:
 327         ModuleHttpFactory()
 328         {
 329         }
 330
 331         ~ModuleHttpFactory()
 332         {
 333         }
 334
 335         virtual Module * CreateModule(Server* Me)
 336         {
 337                 HttpModule = new ModuleHttp(Me);
 338                 return HttpModule;
 339         }
 340 };
 341
 342
 343 extern "C" void * init_module( void )
 344 {
 345         return new ModuleHttpFactory;
 346 }