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Add config <options:disablehmac> to support disabling of HMAC, and tidy up to detect...
[user/henk/code/inspircd.git] / src / modules / m_httpd.cpp
index 7d670ea2b67b8d5d5936170f8ddd5bfc310487ca..3342ba37d425690fa365649f6d9b36fe47ca033a 100644 (file)
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *                    E-mail:
- *             <brain@chatspike.net>
- *               <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
+ *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
  * This program is free but copyrighted software; see
- *         the file COPYING for details.
+ *            the file COPYING for details.
  *
  * ---------------------------------------------------
  */
 
-using namespace std;
-
-#include <stdio.h>
-#include "users.h"
-#include "channels.h"
+#include <algorithm>
 #include "modules.h"
-#include "inspsocket.h"
-#include "helperfuncs.h"
+#include "inspircd.h"
 #include "httpd.h"
 
 /* $ModDesc: Provides HTTP serving facilities to modules */
 
-class ModuleHttp;
+class ModuleHttpServer;
 
-static Server *Srv;
-static ModuleHttp* HttpModule;
-extern time_t TIME;
+static ModuleHttpServer* HttpModule;
 static bool claimed;
 
+/** HTTP socket states
+ */
 enum HttpState
 {
        HTTP_LISTEN = 0,
        HTTP_SERVE_WAIT_REQUEST = 1,
-       HTTP_SERVE_SEND_DATA = 2
+       HTTP_SERVE_RECV_POSTDATA = 2,
+       HTTP_SERVE_SEND_DATA = 3
+};
+
+class HttpServerSocket;
+
+/** This class is used to handle HTTP socket timeouts
+ */
+class HttpServerTimeout : public InspTimer
+{
+ private:
+       /** HttpServerSocket we are attached to
+        */
+       HttpServerSocket* s;
+       /** Socketengine the file descriptor is in
+        */
+       SocketEngine* SE;
+ public:
+       /** Attach timeout to HttpServerSocket
+        */
+       HttpServerTimeout(HttpServerSocket* sock, SocketEngine* engine);
+       /** Handle timer tick
+        */
+       void Tick(time_t TIME);
 };
 
-class HttpSocket : public InspSocket
+/** A socket used for HTTP transport
+ */
+class HttpServerSocket : public InspSocket
 {
        FileReader* index;
        HttpState InternalState;
        std::stringstream headers;
+       std::string postdata;
+       std::string request_type;
+       std::string uri;
+       std::string http_version;
+       unsigned int postsize;
+       HttpServerTimeout* Timeout;
 
  public:
 
-       HttpSocket(std::string host, int port, bool listening, unsigned long maxtime, FileReader* index_page) : InspSocket(host, port, listening, maxtime), index(index_page)
+       HttpServerSocket(InspIRCd* SI, std::string host, int port, bool listening, unsigned long maxtime, FileReader* index_page) : InspSocket(SI, host, port, listening, maxtime), index(index_page), postsize(0)
        {
-               log(DEBUG,"HttpSocket constructor");
                InternalState = HTTP_LISTEN;
+               Timeout = NULL;
        }
 
-       HttpSocket(int newfd, char* ip, FileReader* ind) : InspSocket(newfd, ip), index(ind)
+       HttpServerSocket(InspIRCd* SI, int newfd, char* ip, FileReader* ind) : InspSocket(SI, newfd, ip), index(ind), postsize(0)
        {
                InternalState = HTTP_SERVE_WAIT_REQUEST;
+               Timeout = new HttpServerTimeout(this, Instance->SE);
+               Instance->Timers->AddTimer(Timeout);
+       }
+
+       FileReader* GetIndex()
+       {
+               return index;
+       }
+
+       ~HttpServerSocket()
+       {
+               if (Timeout)
+               {
+                       if (Instance->Time() < Timeout->GetTimer())
+                               Instance->Timers->DelTimer(Timeout);
+                       Timeout = NULL;
+               }
        }
 
        virtual int OnIncomingConnection(int newsock, char* ip)
        {
                if (InternalState == HTTP_LISTEN)
                {
-                       HttpSocket* s = new HttpSocket(newsock, ip, index);
-                       Srv->AddSocket(s);
+                       HttpServerSocket* s = new HttpServerSocket(this->Instance, newsock, ip, index);
+                       s = s; /* Stop GCC whining */
                }
                return true;
        }
@@ -164,21 +204,27 @@ class HttpSocket : public InspSocket
                }
        }
 
-       void SendHeaders(unsigned long size, int response)
+       void SendHeaders(unsigned long size, int response, const std::string &extraheaders)
        {
-               struct tm *timeinfo = localtime(&TIME);
+               time_t local = this->Instance->Time();
+               struct tm *timeinfo = gmtime(&local);
                this->Write("HTTP/1.1 "+ConvToStr(response)+" "+Response(response)+"\r\nDate: ");
                this->Write(asctime(timeinfo));
+               if (extraheaders.empty())
+               {
+                       this->Write("Content-Type: text/html\r\n");
+               }
+               else
+               {
+                       this->Write(extraheaders);
+               }
                this->Write("Server: InspIRCd/m_httpd.so/1.1\r\nContent-Length: "+ConvToStr(size)+
-                               "\r\nConnection: close\r\nContent-Type: text/html\r\n\r\n");
+                               "\r\nConnection: close\r\n\r\n");
        }
 
        virtual bool OnDataReady()
        {
                char* data = this->Read();
-               std::string request_type;
-               std::string uri;
-               std::string http_version;
 
                /* Check that the data read is a valid pointer and it has some content */
                if (data && *data)
@@ -187,94 +233,154 @@ class HttpSocket : public InspSocket
 
                        if (headers.str().find("\r\n\r\n") != std::string::npos)
                        {
-                               /* Headers are complete */
-                               InternalState = HTTP_SERVE_SEND_DATA;
-
-                               headers >> request_type;
-                               headers >> uri;
-                               headers >> http_version;
-
-                               if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
+                               if (request_type == "")
                                {
-                                       SendHeaders(0, 505);
+                                       headers >> request_type;
+                                       headers >> uri;
+                                       headers >> http_version;
+
+                                       std::transform(request_type.begin(), request_type.end(), request_type.begin(), ::toupper);
+                                       std::transform(http_version.begin(), http_version.end(), http_version.begin(), ::toupper);
                                }
-                               else
+
+                               if ((InternalState == HTTP_SERVE_WAIT_REQUEST) && (request_type == "POST"))
                                {
-                                       if ((request_type == "GET") && (uri == "/"))
+                                       /* Do we need to fetch postdata? */
+                                       postdata = "";
+                                       InternalState = HTTP_SERVE_RECV_POSTDATA;
+                                       std::string header_item;
+                                       while (headers >> header_item)
                                        {
-                                               SendHeaders(index->ContentSize(),200);
-                                               this->Write(index->Contents());
+                                               if (header_item == "Content-Length:")
+                                               {
+                                                       headers >> header_item;
+                                                       postsize = atoi(header_item.c_str());
+                                               }
+                                       }
+                                       if (!postsize)
+                                       {
+                                               InternalState = HTTP_SERVE_SEND_DATA;
+                                               SendHeaders(0, 400, "");
+                                               Timeout = new HttpServerTimeout(this, Instance->SE);
+                                               Instance->Timers->AddTimer(Timeout);
                                        }
                                        else
                                        {
-                                               claimed = false;
-                                               HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP());
-                                               Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
-                                               e.Send();
-
-                                               if (!claimed)
-                                                       SendHeaders(0, 404);
+                                               std::string::size_type x = headers.str().find("\r\n\r\n");
+                                               postdata = headers.str().substr(x+4, headers.str().length());
+                                               /* Get content length and store */
+                                               if (postdata.length() >= postsize)
+                                                       ServeData();
                                        }
                                }
-
-                               return false;
+                               else if (InternalState == HTTP_SERVE_RECV_POSTDATA)
+                               {
+                                       /* Add postdata, once we have it all, send the event */
+                                       postdata.append(data);
+                                       if (postdata.length() >= postsize)
+                                               ServeData();
+                               }
+                               else
+                               {
+                                       ServeData();
+                               }
+                               return true;
                        }
                        return true;
                }
                else
                {
-                       /* Bastard client closed the socket on us!
-                        * Oh wait, theyre SUPPOSED to do that!
-                        */
                        return false;
                }
        }
 
-       void Page(std::stringstream* n, int response)
+       void ServeData()
        {
-               SendHeaders(n->str().length(),response);
+               /* Headers are complete */
+               InternalState = HTTP_SERVE_SEND_DATA;
+
+               Instance->Timers->DelTimer(Timeout);
+               Timeout = NULL;
+       
+               if ((http_version != "HTTP/1.1") && (http_version != "HTTP/1.0"))
+               {
+                       SendHeaders(0, 505, "");
+               }
+               else
+               {
+                       if ((request_type == "GET") && (uri == "/"))
+                       {
+                               SendHeaders(index->ContentSize(), 200, "");
+                               this->Write(index->Contents());
+                       }
+                       else
+                       {
+                               claimed = false;
+                               HTTPRequest httpr(request_type,uri,&headers,this,this->GetIP(),postdata);
+                               Event e((char*)&httpr, (Module*)HttpModule, "httpd_url");
+                               e.Send(this->Instance);
+                               if (!claimed)
+                               {
+                                       SendHeaders(0, 404, "");
+                               }
+                       }
+               }
+               Timeout = new HttpServerTimeout(this, Instance->SE);
+               Instance->Timers->AddTimer(Timeout);
+       }
+
+       void Page(std::stringstream* n, int response, std::string& extraheaders)
+       {
+               SendHeaders(n->str().length(), response, extraheaders);
                this->Write(n->str());
        }
 };
 
-class ModuleHttp : public Module
+HttpServerTimeout::HttpServerTimeout(HttpServerSocket* sock, SocketEngine* engine) : InspTimer(60, time(NULL)), s(sock), SE(engine)
 {
-       int port;
-       std::string host;
-       std::string bindip;
-       std::string indexfile;
-
-       FileReader index;
+}
 
-       HttpSocket* http;
+void HttpServerTimeout::Tick(time_t TIME)
+{
+       SE->DelFd(s);
+       s->Close();
+       delete s;
+}
 
+class ModuleHttpServer : public Module
+{
+       std::vector<HttpServerSocket*> httpsocks;
  public:
 
        void ReadConfig()
        {
-               ConfigReader c;
-               this->host = c.ReadValue("http", "host", 0);
-               this->bindip = c.ReadValue("http", "ip", 0);
-               this->port = c.ReadInteger("http", "port", 0, true);
-               this->indexfile = c.ReadValue("http", "index", 0);
+               int port;
+               std::string host;
+               std::string bindip;
+               std::string indexfile;
+               FileReader* index;
+               HttpServerSocket* http;
+               ConfigReader c(ServerInstance);
 
-               index.LoadFile(this->indexfile);
-       }
+               httpsocks.clear();
 
-       void CreateListener()
-       {
-               http = new HttpSocket(this->bindip, this->port, true, 0, &index);
-               if ((http) && (http->GetState() == I_LISTENING))
+               for (int i = 0; i < c.Enumerate("http"); i++)
                {
-                       Srv->AddSocket(http);
+                       host = c.ReadValue("http", "host", i);
+                       bindip = c.ReadValue("http", "ip", i);
+                       port = c.ReadInteger("http", "port", i, true);
+                       indexfile = c.ReadValue("http", "index", i);
+                       index = new FileReader(ServerInstance, indexfile);
+                       if (!index->Exists())
+                               throw ModuleException("Can't read index file: "+indexfile);
+                       http = new HttpServerSocket(ServerInstance, bindip, port, true, 0, index);
+                       httpsocks.push_back(http);
                }
        }
 
-       ModuleHttp(Server* Me) : Module::Module(Me)
+       ModuleHttpServer(InspIRCd* Me) : Module::Module(Me)
        {
-               Srv = Me;
                ReadConfig();
-               CreateListener();
        }
 
        void OnEvent(Event* event)
@@ -285,8 +391,8 @@ class ModuleHttp : public Module
        {
                claimed = true;
                HTTPDocument* doc = (HTTPDocument*)request->GetData();
-               HttpSocket* sock = (HttpSocket*)doc->sock;
-               sock->Page(doc->GetDocument(), doc->GetResponseCode());
+               HttpServerSocket* sock = (HttpServerSocket*)doc->sock;
+               sock->Page(doc->GetDocument(), doc->GetResponseCode(), doc->GetExtraHeaders());
                return NULL;
        }
 
@@ -295,32 +401,37 @@ class ModuleHttp : public Module
                List[I_OnEvent] = List[I_OnRequest] = 1;
        }
 
-       virtual ~ModuleHttp()
+       virtual ~ModuleHttpServer()
        {
-               Srv->DelSocket(http);
+               for (size_t i = 0; i < httpsocks.size(); i++)
+               {
+                       ServerInstance->SE->DelFd(httpsocks[i]);
+                       delete httpsocks[i]->GetIndex();
+                       delete httpsocks[i];
+               }
        }
 
        virtual Version GetVersion()
        {
-               return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
+               return Version(1,1,0,0,VF_VENDOR|VF_SERVICEPROVIDER,API_VERSION);
        }
 };
 
 
-class ModuleHttpFactory : public ModuleFactory
+class ModuleHttpServerFactory : public ModuleFactory
 {
  public:
-       ModuleHttpFactory()
+       ModuleHttpServerFactory()
        {
        }
        
-       ~ModuleHttpFactory()
+       ~ModuleHttpServerFactory()
        {
        }
        
-       virtual Module * CreateModule(Server* Me)
+       virtual Module * CreateModule(InspIRCd* Me)
        {
-               HttpModule = new ModuleHttp(Me);
+               HttpModule = new ModuleHttpServer(Me);
                return HttpModule;
        }
 };
@@ -328,5 +439,5 @@ class ModuleHttpFactory : public ModuleFactory
 
 extern "C" void * init_module( void )
 {
-       return new ModuleHttpFactory;
+       return new ModuleHttpServerFactory;
 }