123 lines
3.0 KiB
C++
123 lines
3.0 KiB
C++
/*
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IPAddress.cpp - Base class that provides IPAddress
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Copyright (c) 2011 Adrian McEwen. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <Arduino.h>
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#include <IPAddress.h>
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#include <Print.h>
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IPAddress::IPAddress()
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{
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_address.dword = 0;
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}
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IPAddress::IPAddress(uint8_t first_octet, uint8_t second_octet, uint8_t third_octet, uint8_t fourth_octet)
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{
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_address.bytes[0] = first_octet;
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_address.bytes[1] = second_octet;
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_address.bytes[2] = third_octet;
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_address.bytes[3] = fourth_octet;
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}
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IPAddress::IPAddress(uint32_t address)
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{
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_address.dword = address;
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}
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IPAddress::IPAddress(const uint8_t *address)
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{
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memcpy(_address.bytes, address, sizeof(_address.bytes));
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}
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IPAddress& IPAddress::operator=(const uint8_t *address)
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{
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memcpy(_address.bytes, address, sizeof(_address.bytes));
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return *this;
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}
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IPAddress& IPAddress::operator=(uint32_t address)
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{
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_address.dword = address;
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return *this;
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}
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bool IPAddress::operator==(const uint8_t* addr) const
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{
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return memcmp(addr, _address.bytes, sizeof(_address.bytes)) == 0;
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}
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size_t IPAddress::printTo(Print& p) const
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{
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size_t n = 0;
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for(int i = 0; i < 3; i++) {
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n += p.print(_address.bytes[i], DEC);
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n += p.print('.');
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}
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n += p.print(_address.bytes[3], DEC);
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return n;
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}
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String IPAddress::toString() const
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{
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char szRet[16];
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sprintf(szRet,"%u.%u.%u.%u", _address.bytes[0], _address.bytes[1], _address.bytes[2], _address.bytes[3]);
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return String(szRet);
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}
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bool IPAddress::fromString(const char *address)
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{
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// TODO: add support for "a", "a.b", "a.b.c" formats
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uint16_t acc = 0; // Accumulator
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uint8_t dots = 0;
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while (*address)
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{
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char c = *address++;
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if (c >= '0' && c <= '9')
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{
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acc = acc * 10 + (c - '0');
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if (acc > 255) {
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// Value out of [0..255] range
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return false;
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}
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}
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else if (c == '.')
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{
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if (dots == 3) {
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// Too much dots (there must be 3 dots)
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return false;
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}
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_address.bytes[dots++] = acc;
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acc = 0;
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}
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else
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{
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// Invalid char
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return false;
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}
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}
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if (dots != 3) {
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// Too few dots (there must be 3 dots)
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return false;
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}
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_address.bytes[3] = acc;
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return true;
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}
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