File IPv6Address.cpp

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/*
 IPv6Address.cpp - Base class that provides IPv6Address
 Copyright (c) 2011 Adrian McEwen.  All right reserved.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "IPv6Address.h"

#include <Arduino.h>
#include <api/Print.h>

IPv6Address::IPv6Address() {
    memset(_address.bytes, 0, sizeof(_address.bytes));
}

IPv6Address::IPv6Address(const uint8_t *address) {
    memcpy(_address.bytes, address, sizeof(_address.bytes));
}

IPv6Address::IPv6Address(const uint32_t *address) {
    memcpy(_address.bytes, (const uint8_t *)address, sizeof(_address.bytes));
}

IPv6Address &IPv6Address::operator=(const uint8_t *address) {
    memcpy(_address.bytes, address, sizeof(_address.bytes));
    return *this;
}

bool IPv6Address::operator==(const uint8_t *addr) const {
    return memcmp(addr, _address.bytes, sizeof(_address.bytes)) == 0;
}

size_t IPv6Address::printTo(Print &p) const {
    /* size_t n = 0;
    for(int i = 0; i < 16; i+=2) {
        if(i){
            n += p.print(':');
        }
        n += p.printf("%02x", _address.bytes[i]);
        n += p.printf("%02x", _address.bytes[i+1]);

    }
    return n; */
    return 0;
}

String IPv6Address::toString() const {
    char szRet[40];
    sprintf(
        szRet,
        "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x",
        _address.bytes[0],
        _address.bytes[1],
        _address.bytes[2],
        _address.bytes[3],
        _address.bytes[4],
        _address.bytes[5],
        _address.bytes[6],
        _address.bytes[7],
        _address.bytes[8],
        _address.bytes[9],
        _address.bytes[10],
        _address.bytes[11],
        _address.bytes[12],
        _address.bytes[13],
        _address.bytes[14],
        _address.bytes[15]
    );
    return String(szRet);
}

bool IPv6Address::fromString(const char *address) {
    // format 0011:2233:4455:6677:8899:aabb:ccdd:eeff
    if (strlen(address) != 39) {
        return false;
    }
    char *pos = (char *)address;
    size_t i  = 0;
    for (i = 0; i < 16; i += 2) {
        if (!sscanf(pos, "%2hhx", &_address.bytes[i]) || !sscanf(pos + 2, "%2hhx", &_address.bytes[i + 1])) {
            return false;
        }
        pos += 5;
    }
    return true;
}