ZrtpCallback.h

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/*
  Copyright (C) 2006-2007 Werner Dittmann

  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 3 of the License, or
  (at your option) 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, see <http://www.gnu.org/licenses/>.
*/

#ifndef _ZRTPCALLBACK_H_
#define _ZRTPCALLBACK_H_

#include <string>
#include <libzrtpcpp/ZrtpPacketBase.h>

enum MessageSeverity {
    Info = 1,
    Warning,
    Error,
    Alert
};

typedef enum  {
    Responder = 1,
    Initiator
} Role;

typedef struct srtpSecrets {
    const uint8_t* keyInitiator;
    int32_t initKeyLen;
    const uint8_t* saltInitiator;
    int32_t initSaltLen;
    const uint8_t* keyResponder;
    int32_t respKeyLen;
    const uint8_t* saltResponder;
    int32_t respSaltLen;
    int32_t srtpAuthTagLen;
    std::string sas;
    Role  role;
} SrtpSecret_t;

enum EnableSecurity {
    ForReceiver = 1,
    ForSender   = 2
};


class ZrtpCallback {

 public:
    virtual ~ZrtpCallback() {};
    virtual int32_t sendDataZRTP(const uint8_t* data, int32_t length) =0;

    virtual int32_t activateTimer(int32_t time) =0;

    virtual int32_t cancelTimer() =0;

    virtual void sendInfo(MessageSeverity severity, char* msg) =0;

    virtual bool srtpSecretsReady(SrtpSecret_t* secrets, EnableSecurity part) =0;

    virtual void srtpSecretsOff(EnableSecurity part) =0;

    virtual void srtpSecretsOn(const char* c, const char* s) =0;

    virtual void handleGoClear() =0;

    virtual void zrtpNegotiationFailed(MessageSeverity severity, char* msg) =0;

    virtual void zrtpNotSuppOther() =0;
};

#endif // ZRTPCALLBACK

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