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
  33
  34 static ModuleHttp* HttpModule;
  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(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, FileReader* index_page) : InspSocket(SI, host, port, listening, maxtime), index(index_page)
  53         {
  54                 ilog(SI,DEBUG,"HttpSocket constructor");
  55                 InternalState = HTTP_LISTEN;
  56         }
  57
  58         HttpSocket(InspIRCd* SI, int newfd, char* ip, FileReader* ind) : InspSocket(SI, 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(this->Instance, newsock, ip, index);
  68                         this->Instance->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                 time_t local = this->Instance->Time();
 171                 struct tm *timeinfo = localtime(&local);
 172                 this->Write("HTTP/1.1 "+ConvToStr(response)+" "+Response(response)+"\r\nDate: ");
 173                 this->Write(asctime(timeinfo));
 174                 if (extraheaders.empty())
 175                 {
 176                         this->Write("Content-Type: text/html\r\n");
 177                 }
 178                 else
 179                 {
 180                         this->Write(extraheaders);
 181                 }
 182                 this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(size)+
 183                                 "\r\nConnection: close\r\n\r\n");
 184         }
 185
 186         virtual bool OnDataReady()
 187         {
 188                 char* data = this->Read();
 189                 std::string request_type;
 190                 std::string uri;
 191                 std::string http_version;
 192
 193                 /* Check that the data read is a valid pointer and it has some content */
 194                 if (data && *data)
 195                 {
 196                         headers << data;
 197
 198                         if (headers.str().find("\r\n\r\n") != std::string::npos)
 199                         {
 200                                 /* Headers are complete */
 201                                 InternalState = HTTP_SERVE_SEND_DATA;
 202
 203                                 headers >> request_type;
 204                                 headers >> uri;
 205                                 headers >> http_version;
 206
 207                                 if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
 208                                 {
 209                                         SendHeaders(0, 505, "");
 210                                 }
 211                                 else
 212                                 {
 213                                         if ((request_type == "GET") && (uri == "/"))
 214                                         {
 215                                                 SendHeaders(index->ContentSize(), 200, "");
 216                                                 this->Write(index->Contents());
 217                                         }
 218                                         else
 219                                         {
 220                                                 claimed = false;
 221                                                 HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP());
 222                                                 Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
 223                                                 e.Send(this->Instance);
 224
 225                                                 if (!claimed)
 226                                                 {
 227                                                         SendHeaders(0, 404, "");
 228                                                         ilog(Instance,DEBUG,"Page not claimed, 404");
 229                                                 }
 230                                         }
 231                                 }
 232
 233                                 return false;
 234                         }
 235                         return true;
 236                 }
 237                 else
 238                 {
 239                         /* Bastard client closed the socket on us!
 240                          * Oh wait, theyre SUPPOSED to do that!
 241                          */
 242                         return false;
 243                 }
 244         }
 245
 246         void Page(std::stringstream* n, int response, std::string& extraheaders)
 247         {
 248                 ilog(Instance,DEBUG,"Sending page");
 249                 SendHeaders(n->str().length(), response, extraheaders);
 250                 this->Write(n->str());
 251         }
 252 };
 253
 254 class ModuleHttp : public Module
 255 {
 256         int port;
 257         std::string host;
 258         std::string bindip;
 259         std::string indexfile;
 260
 261         FileReader* index;
 262
 263         HttpSocket* http;
 264
 265  public:
 266
 267         void ReadConfig()
 268         {
 269                 ConfigReader c(ServerInstance);
 270                 this->host = c.ReadValue("http", "host", 0);
 271                 this->bindip = c.ReadValue("http", "ip", 0);
 272                 this->port = c.ReadInteger("http", "port", 0, true);
 273                 this->indexfile = c.ReadValue("http", "index", 0);
 274
 275                 if (index)
 276                 {
 277                         delete index;
 278                         index = NULL;
 279                 }
 280                 index = new FileReader(ServerInstance, this->indexfile);
 281         }
 282
 283         void CreateListener()
 284         {
 285                 http = new HttpSocket(ServerInstance, this->bindip, this->port, true, 0, index);
 286                 if ((http) && (http->GetState() == I_LISTENING))
 287                 {
 288                         ServerInstance->AddSocket(http);
 289                 }
 290         }
 291
 292         ModuleHttp(InspIRCd* Me) : Module::Module(Me)
 293         {
 294                 index = NULL;
 295                 ReadConfig();
 296                 CreateListener();
 297         }
 298
 299         void OnEvent(Event* event)
 300         {
 301         }
 302
 303         char* OnRequest(Request* request)
 304         {
 305                 log(DEBUG,"Got HTTPDocument object");
 306                 claimed = true;
 307                 HTTPDocument* doc = (HTTPDocument*)request->GetData();
 308                 HttpSocket* sock = (HttpSocket*)doc->sock;
 309                 sock->Page(doc->GetDocument(), doc->GetResponseCode(), doc->GetExtraHeaders());
 310                 return NULL;
 311         }
 312
 313         void Implements(char* List)
 314         {
 315                 List[I_OnEvent] = List[I_OnRequest] = 1;
 316         }
 317
 318         virtual ~ModuleHttp()
 319         {
 320                 ServerInstance->DelSocket(http);
 321         }
 322
 323         virtual Version GetVersion()
 324         {
 325                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR|VF_SERVICEPROVIDER);
 326         }
 327 };
 328
 329
 330 class ModuleHttpFactory : public ModuleFactory
 331 {
 332  public:
 333         ModuleHttpFactory()
 334         {
 335         }
 336
 337         ~ModuleHttpFactory()
 338         {
 339         }
 340
 341         virtual Module * CreateModule(InspIRCd* Me)
 342         {
 343                 HttpModule = new ModuleHttp(Me);
 344                 return HttpModule;
 345         }
 346 };
 347
 348
 349 extern "C" void * init_module( void )
 350 {
 351         return new ModuleHttpFactory;
 352 }