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/*
* Copyright (c) 2017-2021, The OpenThread Authors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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
* 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.
*/
/**
* @file
* This file includes definition for DNS utilities.
*/
#ifndef OTBR_UTILS_DNS_UTILS_HPP_
#define OTBR_UTILS_DNS_UTILS_HPP_
#include "openthread-br/config.h"
#include <string>
namespace otbr {
namespace DnsUtils {
/**
* This function unescapes a DNS Service Instance name according to "DNS Name Escaping".
*
* @sa "Notes on DNS Name Escaping" at
* https://opensource.apple.com/source/mDNSResponder/mDNSResponder-1310.140.1/mDNSShared/dns_sd.h.auto.html.
*
* @param[in] aName The DNS Service Instance name to unescape.
*
* @returns The unescaped DNS Service Instance name.
*
*/
std::string UnescapeInstanceName(const std::string &aName);
/**
* This function checks a given host name for sanity.
*
* Check criteria:
* The host name must ends with dot.
*
* @param[in] aHostName The host name to check.
*
*/
void CheckHostnameSanity(const std::string &aHostName);
/**
* This function checks a given service name for sanity.
*
* Check criteria:
* The service name must contain exactly one dot.
* The service name must not end with dot.
*
* @param[in] aServiceName The service name to check.
*
*/
void CheckServiceNameSanity(const std::string &aServiceName);
} // namespace DnsUtils
} // namespace otbr
#endif // OTBR_UTILS_DNS_UTILS_HPP_
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