datatype_macaroon_secret.cc

// Copyright (c) 2014, Cornell University
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of HyperDex nor the names of its contributors may be
//       used to endorse or promote products derived from this software without
//       specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

#define __STDC_LIMIT_MACROS

// HyperDex
#include "common/datatype_macaroon_secret.h"

using hyperdex::datatype_macaroon_secret;

datatype_macaroon_secret :: datatype_macaroon_secret()
{
}

datatype_macaroon_secret :: ~datatype_macaroon_secret() throw ()
{
}

hyperdatatype
datatype_macaroon_secret :: datatype() const
{
    return HYPERDATATYPE_STRING;
}

bool
datatype_macaroon_secret :: validate(const e::slice&) const
{
    return true;
}

bool
datatype_macaroon_secret :: check_args(const funcall& func) const
{
    return func.arg1_datatype == HYPERDATATYPE_MACAROON_SECRET &&
           validate(func.arg1) && func.name == FUNC_SET;
}

bool
datatype_macaroon_secret :: apply(const e::slice& old_value,
                                  const funcall* funcs, size_t funcs_sz,
                                  e::arena* new_memory,
                                  e::slice* new_value) const
{
    *new_value = old_value;

    if (funcs_sz > 0)
    {
        assert(funcs[funcs_sz - 1].name == FUNC_SET);
        *new_value = funcs[funcs_sz - 1].arg1;
    }

    uint8_t* ptr = NULL;
    new_memory->allocate(new_value->size(), &ptr);
    memmove(ptr, new_value->data(), new_value->size());
    *new_value = e::slice(ptr, new_value->size());
    return true;
}