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/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
/*------------------------------------------------------------------------*/
/* http.c - reworked HTTP communication main loop. */
/*------------------------------------------------------------------------*/
#include "defs.h"
#include "protos.h"
#include "server.h"
#include "http-defs.h"
#include "http.h"
/*
* Release ClientBase
*/
void releaseClientBase(struct ClientBase *cb)
{
// free Host
free(cb->Host.Name);
// free Socket
// struct sockaddr_in Socket;
// free TimeOut
// struct timeval TimeOut;
// free Request
free(cb->Request.HeadBuff);
free(cb->Request.BodyBuff);
struct MsgHeader *dummy = NULL;
while(cb->Request.First != NULL)
{
dummy = cb->Request.First->Next;
//free(cb->Request.First->Content);
free(cb->Request.First);
cb->Request.First = dummy;
}
free(cb->Request.Body);
free(cb->Request.Line.Vanilla);
// free Response
free(cb->Response.Head);
free(cb->Response.Body);
}
/****** http/HandleRequest ***************************************************
*
* NAME
* HandleRequest -- main function for communication processing.
*
* SYNOPSIS
* void HandleRequest( struct ClientBase *Client,
* SubServerPtr SubServerList );
*
* FUNCTION
* This is the main function which handles the HTTP communication.
* It calls successivley the functions for handling the request from
* the client, opening the sockets to the sub-servers and sending
* the rewritten requests to them, handling the responses and finally
* sending a response to the client.
*
* INPUTS
* Client - Data structure which holds various informations about
* the client.
* SubServerList - The head to a list of all sub-server data structures.
*
* NOTES
* "Client" and "SubServerList" must be valid - they will not be
* checked. Since "Client" have to be valid in the previous call to
* "Accept()" this shouldn't be much of a problem...
*
* This is "rewritten from scratch" version of "HandleRequest()"
* since the old version seemed not suitable enough for expansion
* to handle more error conditions in the communication, and for
* integration of more features.
*
* BUGS
* Various left. Especially the authorization mechanism doesn't work
* (yet). Also, some aspects of the HTTP aren't handled gracefully
* (HTTP/0.9 messages, handling of other methods than GET, HEAD and
* POST, etc.).
*
******************************************************************************
*
*/
void HandleRequest( struct ClientBase *Client )
{
struct ToDoArgs ToDo;
int RespState;
ToDo.What = DO_NOTHING;
ToDo.Which.Code = REALLY_NOTHING;
Client->Comm.ConnStatus = CONN_OPEN;
while( Client->Comm.ConnStatus == CONN_OPEN )
{
//LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): Reading Request.");
GetRequest( Client );
//LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): Parsing Request.");
ParseReqHeader( &Client->Request );
//LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): Interpreting Request.");
InterpreteRequest( Client, &ToDo );
switch( ToDo.What )
{
case DO_SEND_RESPONSE:
//LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): doing InterpreteRequest.");
InterpretePOSTRequest( Client );
//LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): doing CreateRasResponse.");
CreateRasResponse( &Client->Comm, Client );
/*
LogMsg( LG_SERVER, DEBUG, "DEBUG: SendResponse() for Request: \"%s\".",
Client->Request.Line.Vanilla );
*/
SendHTTPMsg( Client->SockFD, &Client->Response );
WriteAccessLog( Client );
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): SEND_RESPONSE done.");
break;
case DO_SEND_ERROR:
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): doing SEND_ERROR." );
Client->RespStatus = ToDo.Which.Code;
LogMsg( LG_SERVER, DEBUG, "DEBUG: CreateHTTPError( %d, -, %p )...",
Client->RespStatus, &Client->Response );
CreateHTTPError( Client->RespStatus, &Client->Comm, &Client->Response );
LogMsg( LG_SERVER, DEBUG, "DEBUG: CreateHTTPError() done." );
LogMsg( LG_SERVER, DEBUG, "DEBUG: SendResponse()..." );
SendResponse( Client );
LogMsg( LG_SERVER, DEBUG, "DEBUG: SendResponse() done." );
LogMsg( LG_SERVER, DEBUG, "DEBUG: Write*Log()..." );
WriteAccessLog( Client );
LogMsg( LG_SERVER, DEBUG, "DEBUG: WriteLog() done." );
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): SEND_ERROR done.");
break;
case DO_SHUTDOWN:
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): doing SHUTDOWN.");
close( Client->SockFD );
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): SHUTDOWN done.");
break;
default:
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): doing UNDEFINED ACTION.");
ErrorMsg( E_PRIV, ERROR, "ERROR: HandleRequest(): Undefined action!" );
Client->RespStatus = STATUS_Internal_Server_Error;
CreateHTTPError( Client->RespStatus, &Client->Comm, &Client->Response );
SendResponse( Client );
WriteAccessLog( Client );
LogMsg( LG_SERVER, DEBUG, "DEBUG: HandleRequest(): UNDEFINED ACTION done.");
break;
}
releaseClientBase(Client);
}
}
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