src/posix/platform/ip6_utils.hpp

/*
 *  Copyright (c) 2021, The OpenThread Authors.
 *  All rights reserved.
 *
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 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. 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.
 *  3. Neither the name of the copyright holder 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 HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 */

#include "openthread-posix-config.h"
#include "platform-posix.h"

#include <arpa/inet.h>

namespace ot {
namespace Posix {
namespace Ip6Utils {

/**
 * This utility class converts binary IPv6 address to text format.
 *
 */
class Ip6AddressString
{
public:
    /**
     * The constructor of this converter.
     *
     * @param[in]   aAddress    A pointer to a buffer holding an IPv6 address.
     *
     */
    Ip6AddressString(const void *aAddress)
    {
        VerifyOrDie(inet_ntop(AF_INET6, aAddress, mBuffer, sizeof(mBuffer)) != nullptr, OT_EXIT_ERROR_ERRNO);
    }

    /**
     * This method returns the string as a null-terminated C string.
     *
     * @returns The null-terminated C string.
     *
     */
    const char *AsCString(void) const { return mBuffer; }

private:
    char mBuffer[INET6_ADDRSTRLEN];
};

} // namespace Ip6Utils
} // namespace Posix
} // namespace ot