/usr/include/opal/h323/h235auth.h is in libopal-dev 3.10.2~dfsg-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* h235auth.h
*
* H.235 authorisation PDU's
*
* Open H323 Library
*
* Copyright (c) 1998-2001 Equivalence Pty. Ltd.
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Open H323 Library.
*
* The Initial Developer of the Original Code is Equivalence Pty. Ltd.
*
* Contributor(s): Fürbass Franz <franz.fuerbass@infonova.at>
*
* $Revision: 24838 $
* $Author: rjongbloed $
* $Date: 2010-10-28 18:14:16 -0500 (Thu, 28 Oct 2010) $
*/
#ifndef OPAL_H323_H235AUTH_H
#define OPAL_H323_H235AUTH_H
#ifdef P_USE_PRAGMA
#pragma interface
#endif
#include <opal/buildopts.h>
#if OPAL_H323
#include <ptlib/pfactory.h>
class H323TransactionPDU;
class H225_CryptoH323Token;
class H225_ArrayOf_AuthenticationMechanism;
class H225_ArrayOf_PASN_ObjectId;
class H235_ClearToken;
class H235_AuthenticationMechanism;
class PASN_ObjectId;
class PASN_Sequence;
class PASN_Array;
/** This abtract class embodies an H.235 authentication mechanism.
NOTE: descendants must have a Clone() function for correct operation.
*/
class H235Authenticator : public PObject
{
PCLASSINFO(H235Authenticator, PObject);
public:
H235Authenticator();
virtual void PrintOn(
ostream & strm
) const;
virtual const char * GetName() const = 0;
virtual PBoolean PrepareTokens(
PASN_Array & clearTokens,
PASN_Array & cryptoTokens
);
virtual H235_ClearToken * CreateClearToken();
virtual H225_CryptoH323Token * CreateCryptoToken(bool digits);
virtual PBoolean Finalise(
PBYTEArray & rawPDU
);
enum ValidationResult {
e_OK = 0, /// Security parameters and Msg are ok, no security attacks
e_Absent, /// Security parameters are expected but absent
e_Error, /// Security parameters are present but incorrect
e_InvalidTime,/// Security parameters indicate peer has bad real time clock
e_BadPassword,/// Security parameters indicate bad password in token
e_ReplyAttack,/// Security parameters indicate an attack was made
e_Disabled /// Security is disabled by local system
};
virtual ValidationResult ValidateTokens(
const PASN_Array & clearTokens,
const PASN_Array & cryptoTokens,
const PBYTEArray & rawPDU
);
virtual ValidationResult ValidateClearToken(
const H235_ClearToken & clearToken
);
virtual ValidationResult ValidateCryptoToken(
const H225_CryptoH323Token & cryptoToken,
const PBYTEArray & rawPDU
);
virtual PBoolean IsCapability(
const H235_AuthenticationMechanism & mechansim,
const PASN_ObjectId & algorithmOID
) = 0;
virtual PBoolean SetCapability(
H225_ArrayOf_AuthenticationMechanism & mechansims,
H225_ArrayOf_PASN_ObjectId & algorithmOIDs
) = 0;
virtual PBoolean UseGkAndEpIdentifiers() const;
virtual PBoolean IsSecuredPDU(
unsigned rasPDU,
PBoolean received
) const;
virtual PBoolean IsActive() const;
void Enable(
PBoolean enab = true
) { enabled = enab; }
void Disable() { enabled = false; }
const PString & GetRemoteId() const { return remoteId; }
void SetRemoteId(const PString & id) { remoteId = id; }
const PString & GetLocalId() const { return localId; }
void SetLocalId(const PString & id) { localId = id; }
const PString & GetPassword() const { return password; }
void SetPassword(const PString & pw) { password = pw; }
protected:
PBoolean AddCapability(
unsigned mechanism,
const PString & oid,
H225_ArrayOf_AuthenticationMechanism & mechansims,
H225_ArrayOf_PASN_ObjectId & algorithmOIDs
);
PBoolean enabled;
PString remoteId; // ID of remote entity
PString localId; // ID of local entity
PString password; // shared secret
unsigned sentRandomSequenceNumber;
unsigned lastRandomSequenceNumber;
unsigned lastTimestamp;
int timestampGracePeriod;
PMutex mutex;
private:
P_REMOVE_VIRTUAL(H225_CryptoH323Token *,CreateCryptoToken(),NULL);
};
PDECLARE_LIST(H235Authenticators, H235Authenticator)
public:
void PreparePDU(
H323TransactionPDU & pdu,
PASN_Array & clearTokens,
unsigned clearOptionalField,
PASN_Array & cryptoTokens,
unsigned cryptoOptionalField
);
H235Authenticator::ValidationResult ValidatePDU(
const H323TransactionPDU & pdu,
const PASN_Array & clearTokens,
unsigned clearOptionalField,
const PASN_Array & cryptoTokens,
unsigned cryptoOptionalField,
const PBYTEArray & rawPDU
);
};
/** This class embodies a simple MD5 based authentication.
The users password is concatenated with the 4 byte timestamp and 4 byte
random fields and an MD5 generated and sent/verified
*/
class H235AuthSimpleMD5 : public H235Authenticator
{
PCLASSINFO(H235AuthSimpleMD5, H235Authenticator);
public:
H235AuthSimpleMD5();
PObject * Clone() const;
virtual const char * GetName() const;
virtual H225_CryptoH323Token * CreateCryptoToken(bool digits);
virtual ValidationResult ValidateCryptoToken(
const H225_CryptoH323Token & cryptoToken,
const PBYTEArray & rawPDU
);
virtual PBoolean IsCapability(
const H235_AuthenticationMechanism & mechansim,
const PASN_ObjectId & algorithmOID
);
virtual PBoolean SetCapability(
H225_ArrayOf_AuthenticationMechanism & mechansim,
H225_ArrayOf_PASN_ObjectId & algorithmOIDs
);
virtual PBoolean IsSecuredPDU(
unsigned rasPDU,
PBoolean received
) const;
};
PFACTORY_LOAD(H235AuthSimpleMD5);
/** This class embodies a RADIUS compatible based authentication (aka Cisco
Access Token or CAT).
The users password is concatenated with the 4 byte timestamp and 1 byte
random fields and an MD5 generated and sent/verified via the challenge
field.
*/
class H235AuthCAT : public H235Authenticator
{
PCLASSINFO(H235AuthCAT, H235Authenticator);
public:
H235AuthCAT();
PObject * Clone() const;
virtual const char * GetName() const;
virtual H235_ClearToken * CreateClearToken();
virtual ValidationResult ValidateClearToken(
const H235_ClearToken & clearToken
);
virtual PBoolean IsCapability(
const H235_AuthenticationMechanism & mechansim,
const PASN_ObjectId & algorithmOID
);
virtual PBoolean SetCapability(
H225_ArrayOf_AuthenticationMechanism & mechansim,
H225_ArrayOf_PASN_ObjectId & algorithmOIDs
);
virtual PBoolean IsSecuredPDU(
unsigned rasPDU,
PBoolean received
) const;
};
PFACTORY_LOAD(H235AuthCAT);
#if OPAL_PTLIB_SSL
/** This class embodies the H.235 "base line Procedure 1" from Annex D.
*/
class H235AuthProcedure1 : public H235Authenticator
{
PCLASSINFO(H235AuthProcedure1, H235Authenticator);
public:
H235AuthProcedure1();
PObject * Clone() const;
virtual const char * GetName() const;
virtual H225_CryptoH323Token * CreateCryptoToken(bool digits);
virtual PBoolean Finalise(
PBYTEArray & rawPDU
);
virtual ValidationResult ValidateCryptoToken(
const H225_CryptoH323Token & cryptoToken,
const PBYTEArray & rawPDU
);
virtual PBoolean IsCapability(
const H235_AuthenticationMechanism & mechansim,
const PASN_ObjectId & algorithmOID
);
virtual PBoolean SetCapability(
H225_ArrayOf_AuthenticationMechanism & mechansim,
H225_ArrayOf_PASN_ObjectId & algorithmOIDs
);
virtual PBoolean UseGkAndEpIdentifiers() const;
};
PFACTORY_LOAD(H235AuthProcedure1);
#endif // OPAL_PTLIB_SSL
#endif // OPAL_H323
#endif //OPAL_H323_H235AUTH_H
/////////////////////////////////////////////////////////////////////////////
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