nsec3hash.h

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// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef NSEC3HASH_H
#define NSEC3HASH_H 1

#include <string>
#include <vector>
#include <stdint.h>
#include <exceptions/exceptions.h>

namespace isc {
namespace dns {
class Name;
class LabelSequence;

namespace rdata {
namespace generic {
class NSEC3;
class NSEC3PARAM;
}
}

class UnknownNSEC3HashAlgorithm : public isc::Exception {
public:
    UnknownNSEC3HashAlgorithm(const char* file, size_t line,
                              const char* what) :
        isc::Exception(file, line, what) {}
};

class NSEC3Hash {
protected:
    NSEC3Hash() {}

public:
    static NSEC3Hash* create(const rdata::generic::NSEC3PARAM& param);

    static NSEC3Hash* create(const rdata::generic::NSEC3& nsec3);

    static NSEC3Hash* create(uint8_t algorithm, uint16_t iterations,
                             const uint8_t* salt_data, size_t salt_length);

    virtual ~NSEC3Hash() {}

    virtual std::string calculate(const Name& name) const = 0;

    virtual std::string calculate(const LabelSequence& ls) const = 0;

    virtual bool match(const rdata::generic::NSEC3& nsec3) const = 0;

    virtual bool match(const rdata::generic::NSEC3PARAM& nsec3param) const = 0;
};

class NSEC3HashCreator {
protected:
    NSEC3HashCreator() {}

public:
    virtual ~NSEC3HashCreator() {}

    virtual NSEC3Hash* create(const rdata::generic::NSEC3PARAM& nsec3param)
        const = 0;

    virtual NSEC3Hash* create(const rdata::generic::NSEC3& nsec3)
        const = 0;

    virtual NSEC3Hash* create(uint8_t algorithm, uint16_t iterations,
                              const uint8_t* salt_data, size_t salt_length)
        const = 0;
};

class DefaultNSEC3HashCreator : public NSEC3HashCreator {
public:
    virtual NSEC3Hash* create(const rdata::generic::NSEC3PARAM& param) const;
    virtual NSEC3Hash* create(const rdata::generic::NSEC3& nsec3) const;
    virtual NSEC3Hash* create(uint8_t algorithm, uint16_t iterations,
                              const uint8_t* salt_data,
                              size_t salt_length) const;
};

void setNSEC3HashCreator(const NSEC3HashCreator* new_creator);

}
}
#endif  // NSEC3HASH_H

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