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/*
* RadiusClass -- An C++-Library for radius authentication
* and accounting.
*
* Copyright (C) 2005 EWE TEL GmbH/Ralf Luebben <ralfluebben@gmx.de>
*
* This program 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 2 of the License, or
* any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _RADIUSPACKET_H_
#define _RADIUSPACKET_H_
#include <stdio.h>
#include <gcrypt.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/select.h>
#include <time.h>
#include <iostream>
#include "error.h"
#include "radius.h"
#include "RadiusAttribute.h"
#include "RadiusServer.h"
#include <map>
#include <list>
#include <utility>
using namespace std;
using std::multimap;
/** The class represents a radius packet with additional variables*/
class RadiusPacket
{
private:
multimap<Octet,RadiusAttribute> attribs; /**The multimap for the radius attributes.*/
int sock; /**<The socket which is used.*/
Octet code; /**< The code of the packet, see the Radius RFC or radius.h*/
Octet identifier; /**<The identifier of the packet, it is generated randomly.*/
unsigned short int length; /**<The length of the packet on the network in bytes. */
Octet authenticator[RADIUS_PACKET_AUTHENTICATOR_LEN];/**<Authenticator.
In ACCEPT-Request packets it is a random number,
in Accounting-Request it is a hash over whole packet and shared secret. The send-method
generates it, when the code is an Accounting-Request*/
Octet req_authenticator[RADIUS_PACKET_AUTHENTICATOR_LEN]; /**<A copy of the authenticator.
The server sends in the authenticator field: code + idntifier + length + request authenticator + attribute and secret.
So you can authenticate the packet, if it is the real response on the request.>*/
Octet *sendbuffer; /**<Buffer for sending the packet over the network.*/
int sendbufferlen; /**<Length of the buffer.*/
int message_authenticator; /**<Offset of the message authenticator digest, if any.*/
Octet *recvbuffer; /**<Buffer for recveing the packet over the network.*/
int recvbufferlen; /**<Length of the buffer.*/
void calcacctdigest(const char *secret); /**Method to generate the hash
for the authenticator in Accounting-Requests.*/
void calcmadigest(const char *secret); /**Method to generate the hash
for the message authenticator in Access-Requests.*/
//private functions
void getRandom(int len, Octet *num);
int shapeRadiusPacket(const char *);
int unShapeRadiusPacket(void);
public:
RadiusPacket(void);
~RadiusPacket(void);
RadiusPacket(Octet code);
int addRadiusAttribute(RadiusAttribute *);
void dumpRadiusPacket(void);
void dumpShapedRadiusPacket(void);
int radiusSend(list<RadiusServer>::iterator);
int radiusReceive(list<RadiusServer> *);
int getRadiusAttribNumber(void);
char * getAuthenticator(void);
int getCode(void);
int authenticateReceivedPacket(RadiusServer *server);
pair<multimap<Octet,RadiusAttribute>::iterator,multimap<Octet,RadiusAttribute>::iterator> findAttributes(int type);
};
#endif //_RADIUSPACKET_H_
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