kea/src/lib/dns/rdata/generic/detail/nsec_bitmap.h

// Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.

#include <stdint.h>

#include <vector>

namespace isc {
namespace dns {
namespace rdata {
namespace generic {
namespace detail {
namespace nsec {
/// Check if a given "type bitmap" for NSEC/NSEC3 is valid.
///
/// This helper function checks given wire format data (stored in a
/// \c std::vector) is a valid type bitmaps used for the NSEC and NSEC3 RRs
/// according to RFC4034 and RFC5155.  The validation logic is the same
/// for these two RRs, so a unified check function is provided.
/// This function is essentially private and is only expected to be called
/// from the \c NSEC and \c NSEC3 class implementations.
///
/// \exception DNSMessageFORMERR The bitmap is not valid.
///
/// \param rrtype_name Either "NSEC" or "NSEC3"; used as part of exception
/// messages.
/// \param typebits The type bitmaps in wire format.  The size of vector
/// is the total length of the bitmaps.
void checkRRTypeBitmaps(const char* const rrtype_name,
                        const std::vector<uint8_t>& typebits);
}
}
}
}
}
}

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