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 "inspircd.h"
  25 #include "httpd.h"
  26
  27 /* $ModDesc: Provides HTTP serving facilities to modules */
  28
  29 class ModuleHttp;
  30
  31 static ModuleHttp* HttpModule;
  32 static bool claimed;
  33
  34 enum HttpState
  35 {
  36         HTTP_LISTEN = 0,
  37         HTTP_SERVE_WAIT_REQUEST = 1,
  38         HTTP_SERVE_RECV_POSTDATA = 2,
  39         HTTP_SERVE_SEND_DATA = 3
  40 };
  41
  42 class HttpSocket : public InspSocket
  43 {
  44         FileReader* index;
  45         HttpState InternalState;
  46         std::stringstream headers;
  47         std::string postdata;
  48         std::string request_type;
  49         std::string uri;
  50         std::string http_version;
  51
  52  public:
  53
  54         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)
  55         {
  56                 SI->Log(DEBUG,"HttpSocket constructor");
  57                 InternalState = HTTP_LISTEN;
  58         }
  59
  60         HttpSocket(InspIRCd* SI, int newfd, char* ip, FileReader* ind) : InspSocket(SI, newfd, ip), index(ind)
  61         {
  62                 InternalState = HTTP_SERVE_WAIT_REQUEST;
  63         }
  64
  65         virtual int OnIncomingConnection(int newsock, char* ip)
  66         {
  67                 if (InternalState == HTTP_LISTEN)
  68                 {
  69                         HttpSocket* s = new HttpSocket(this->Instance, newsock, ip, index);
  70                         s = s; /* Stop GCC whining */
  71                 }
  72                 return true;
  73         }
  74
  75         virtual void OnClose()
  76         {
  77         }
  78
  79         std::string Response(int response)
  80         {
  81                 switch (response)
  82                 {
  83                         case 100:
  84                                 return "CONTINUE";
  85                         case 101:
  86                                 return "SWITCHING PROTOCOLS";
  87                         case 200:
  88                                 return "OK";
  89                         case 201:
  90                                 return "CREATED";
  91                         case 202:
  92                                 return "ACCEPTED";
  93                         case 203:
  94                                 return "NON-AUTHORITATIVE INFORMATION";
  95                         case 204:
  96                                 return "NO CONTENT";
  97                         case 205:
  98                                 return "RESET CONTENT";
  99                         case 206:
 100                                 return "PARTIAL CONTENT";
 101                         case 300:
 102                                 return "MULTIPLE CHOICES";
 103                         case 301:
 104                                 return "MOVED PERMENANTLY";
 105                         case 302:
 106                                 return "FOUND";
 107                         case 303:
 108                                 return "SEE OTHER";
 109                         case 304:
 110                                 return "NOT MODIFIED";
 111                         case 305:
 112                                 return "USE PROXY";
 113                         case 307:
 114                                 return "TEMPORARY REDIRECT";
 115                         case 400:
 116                                 return "BAD REQUEST";
 117                         case 401:
 118                                 return "UNAUTHORIZED";
 119                         case 402:
 120                                 return "PAYMENT REQUIRED";
 121                         case 403:
 122                                 return "FORBIDDEN";
 123                         case 404:
 124                                 return "NOT FOUND";
 125                         case 405:
 126                                 return "METHOD NOT ALLOWED";
 127                         case 406:
 128                                 return "NOT ACCEPTABLE";
 129                         case 407:
 130                                 return "PROXY AUTHENTICATION REQUIRED";
 131                         case 408:
 132                                 return "REQUEST TIMEOUT";
 133                         case 409:
 134                                 return "CONFLICT";
 135                         case 410:
 136                                 return "GONE";
 137                         case 411:
 138                                 return "LENGTH REQUIRED";
 139                         case 412:
 140                                 return "PRECONDITION FAILED";
 141                         case 413:
 142                                 return "REQUEST ENTITY TOO LARGE";
 143                         case 414:
 144                                 return "REQUEST-URI TOO LONG";
 145                         case 415:
 146                                 return "UNSUPPORTED MEDIA TYPE";
 147                         case 416:
 148                                 return "REQUESTED RANGE NOT SATISFIABLE";
 149                         case 417:
 150                                 return "EXPECTATION FAILED";
 151                         case 500:
 152                                 return "INTERNAL SERVER ERROR";
 153                         case 501:
 154                                 return "NOT IMPLEMENTED";
 155                         case 502:
 156                                 return "BAD GATEWAY";
 157                         case 503:
 158                                 return "SERVICE UNAVAILABLE";
 159                         case 504:
 160                                 return "GATEWAY TIMEOUT";
 161                         case 505:
 162                                 return "HTTP VERSION NOT SUPPORTED";
 163                         default:
 164                                 return "WTF";
 165                         break;
 166
 167                 }
 168         }
 169
 170         void SendHeaders(unsigned long size, int response, const std::string &extraheaders)
 171         {
 172                 time_t local = this->Instance->Time();
 173                 struct tm *timeinfo = localtime(&local);
 174                 this->Write("HTTP/1.1 "+ConvToStr(response)+" "+Response(response)+"\r\nDate: ");
 175                 this->Write(asctime(timeinfo));
 176                 if (extraheaders.empty())
 177                 {
 178                         this->Write("Content-Type: text/html\r\n");
 179                 }
 180                 else
 181                 {
 182                         this->Write(extraheaders);
 183                 }
 184                 this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(size)+
 185                                 "\r\nConnection: close\r\n\r\n");
 186         }
 187
 188         virtual bool OnDataReady()
 189         {
 190                 char* data = this->Read();
 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 >> request_type;
 200                                 headers >> uri;
 201                                 headers >> http_version;
 202
 203                                 if ((InternalState == HTTP_SERVE_WAIT_REQUEST) && (request_type == "POST"))
 204                                 {
 205                                         /* Do we need to fetch postdata? */
 206                                         postdata = "";
 207                                         InternalState = HTTP_SERVE_RECV_POSTDATA;
 208                                         /* TODO: Get content length and store */
 209                                 }
 210                                 else if (InternalState == HTTP_SERVE_RECV_POSTDATA)
 211                                 {
 212                                         /* Add postdata, once we have it all, send the event */
 213                                 }
 214                                 else
 215                                 {
 216                                         /* Headers are complete */
 217                                         InternalState = HTTP_SERVE_SEND_DATA;
 218
 219                                         if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
 220                                         {
 221                                                 SendHeaders(0, 505, "");
 222                                         }
 223                                         else
 224                                         {
 225                                                 if ((request_type == "GET") && (uri == "/"))
 226                                                 {
 227                                                         SendHeaders(index->ContentSize(), 200, "");
 228                                                         this->Write(index->Contents());
 229                                                 }
 230                                                 else
 231                                                 {
 232                                                         claimed = false;
 233                                                         HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP(),postdata);
 234                                                         Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
 235                                                         e.Send(this->Instance);
 236
 237                                                         if (!claimed)
 238                                                         {
 239                                                                 SendHeaders(0, 404, "");
 240                                                                 Instance->Log(DEBUG,"Page not claimed, 404");
 241                                                         }
 242                                                 }
 243                                         }
 244                                 }
 245
 246                                 return false;
 247                         }
 248                         return true;
 249                 }
 250                 else
 251                 {
 252                         /* Bastard client closed the socket on us!
 253                          * Oh wait, theyre SUPPOSED to do that!
 254                          */
 255                         return false;
 256                 }
 257         }
 258
 259         void Page(std::stringstream* n, int response, std::string& extraheaders)
 260         {
 261                 Instance->Log(DEBUG,"Sending page");
 262                 SendHeaders(n->str().length(), response, extraheaders);
 263                 this->Write(n->str());
 264         }
 265 };
 266
 267 class ModuleHttp : public Module
 268 {
 269         int port;
 270         std::string host;
 271         std::string bindip;
 272         std::string indexfile;
 273
 274         FileReader* index;
 275
 276         HttpSocket* http;
 277
 278  public:
 279
 280         void ReadConfig()
 281         {
 282                 ConfigReader c(ServerInstance);
 283                 this->host = c.ReadValue("http", "host", 0);
 284                 this->bindip = c.ReadValue("http", "ip", 0);
 285                 this->port = c.ReadInteger("http", "port", 0, true);
 286                 this->indexfile = c.ReadValue("http", "index", 0);
 287
 288                 if (index)
 289                 {
 290                         delete index;
 291                         index = NULL;
 292                 }
 293                 index = new FileReader(ServerInstance, this->indexfile);
 294         }
 295
 296         void CreateListener()
 297         {
 298                 http = new HttpSocket(ServerInstance, this->bindip, this->port, true, 0, index);
 299         }
 300
 301         ModuleHttp(InspIRCd* Me) : Module::Module(Me)
 302         {
 303                 index = NULL;
 304                 ReadConfig();
 305                 CreateListener();
 306         }
 307
 308         void OnEvent(Event* event)
 309         {
 310         }
 311
 312         char* OnRequest(Request* request)
 313         {
 314                 ServerInstance->Log(DEBUG,"Got HTTPDocument object");
 315                 claimed = true;
 316                 HTTPDocument* doc = (HTTPDocument*)request->GetData();
 317                 HttpSocket* sock = (HttpSocket*)doc->sock;
 318                 sock->Page(doc->GetDocument(), doc->GetResponseCode(), doc->GetExtraHeaders());
 319                 return NULL;
 320         }
 321
 322         void Implements(char* List)
 323         {
 324                 List[I_OnEvent] = List[I_OnRequest] = 1;
 325         }
 326
 327         virtual ~ModuleHttp()
 328         {
 329                 ServerInstance->SE->DelFd(http);
 330         }
 331
 332         virtual Version GetVersion()
 333         {
 334                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR|VF_SERVICEPROVIDER);
 335         }
 336 };
 337
 338
 339 class ModuleHttpFactory : public ModuleFactory
 340 {
 341  public:
 342         ModuleHttpFactory()
 343         {
 344         }
 345
 346         ~ModuleHttpFactory()
 347         {
 348         }
 349
 350         virtual Module * CreateModule(InspIRCd* Me)
 351         {
 352                 HttpModule = new ModuleHttp(Me);
 353                 return HttpModule;
 354         }
 355 };
 356
 357
 358 extern "C" void * init_module( void )
 359 {
 360         return new ModuleHttpFactory;
 361 }