dualdar/ddar.h

#ifndef DDAR_H_
#define DDAR_H_

namespace ddar {

class secret;

class context {
public:
    virtual secret *get_secret(const char *alias) = 0;

    virtual int get_userid() = 0;

    virtual void logd (const char *fmt, ...) = 0;

    virtual void loge (const char *fmt, ...) = 0;

protected:
    virtual ~context() { };
};


class secret {
public:
    static constexpr const int MAX_SECRET_ALIAS_LEN = 32;
    static constexpr const int MAX_SECRET_LEN = 128;

    char alias[MAX_SECRET_ALIAS_LEN];
    void *data;
    int size;

protected:
    virtual ~secret() { };
};

class metadata {
public:
    static constexpr const int MAX_PERSISTENT_CACHE_NAME_LEN = 32;
    static constexpr const int MAX_PERSISTENT_CACHE_VALUE_LEN = 128;
    virtual int persistent_set(const char *name, const void *value, int size) = 0;
    virtual int persistent_get(const char *name, void *value) = 0;

    void *ephemeral_addr;
    int ephemeral_size;

    context *context;

    virtual unsigned long get_inode() = 0;


protected:
    virtual ~metadata() { };
};

class abstract_crypto {
public:
    virtual bool prepare(context *context, metadata *md) = 0;

    virtual bool encrypt(metadata *md, void *pt, void *ct, unsigned long page_offset, int page_len) = 0;

    virtual bool decrypt(metadata *md, void *ct, unsigned long page_offset, int page_len) = 0;

protected:
    virtual ~abstract_crypto() {}
};

}

#endif /* DDAR_H_ */