//------------------------------------------------------------------------------
/*
    This file is part of Beast: https://github.com/vinniefalco/Beast
    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>

    Portions of this file are from JUCE.
    Copyright (c) 2013 - Raw Material Software Ltd.
    Please visit http://www.juce.com

    Permission to use, copy, modify, and/or distribute this software for any
    purpose  with  or without fee is hereby granted, provided that the above
    copyright notice and this permission notice appear in all copies.

    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================

IPAddress::IPAddress() noexcept
{
    address[0] = 0;  address[1] = 0;
    address[2] = 0;  address[3] = 0;
}

IPAddress::IPAddress (const uint8 bytes[4]) noexcept
{
    address[0] = bytes[0];  address[1] = bytes[1];
    address[2] = bytes[2];  address[3] = bytes[3];
}

IPAddress::IPAddress (uint8 a0, uint8 a1, uint8 a2, uint8 a3) noexcept
{
    address[0] = a0;  address[1] = a1;
    address[2] = a2;  address[3] = a3;
}

IPAddress::IPAddress (uint32 n) noexcept
{
    address[0] = (n >> 24);
    address[1] = (n >> 16) & 255;
    address[2] = (n >> 8)  & 255;
    address[3] = (n & 255);
}

IPAddress::IPAddress (const String& adr)
{
    StringArray tokens;
    tokens.addTokens (adr, ".", String::empty);

    for (int i = 0; i < 4; ++i)
        address[i] = (uint8) tokens[i].getIntValue();
}

String IPAddress::toString() const
{
    String s ((int) address[0]);

    for (int i = 1; i < 4; ++i)
        s << '.' << (int) address[i];

    return s;
}

IPAddress IPAddress::any() noexcept           { return IPAddress(); }
IPAddress IPAddress::broadcast() noexcept     { return IPAddress (255, 255, 255, 255); }
IPAddress IPAddress::local() noexcept         { return IPAddress (127, 0, 0, 1); }

bool IPAddress::operator== (const IPAddress& other) const noexcept
{
    return address[0] == other.address[0]
        && address[1] == other.address[1]
        && address[2] == other.address[2]
        && address[3] == other.address[3];
}

bool IPAddress::operator!= (const IPAddress& other) const noexcept
{
    return ! operator== (other);
}

#if ! BEAST_WINDOWS
static void addAddress (const sockaddr_in* addr_in, Array<IPAddress>& result)
{
    in_addr_t addr = addr_in->sin_addr.s_addr;

    if (addr != INADDR_NONE)
        result.addIfNotAlreadyThere (IPAddress (ntohl (addr)));
}

static void findIPAddresses (int sock, Array<IPAddress>& result)
{
    ifconf cfg;
    HeapBlock<char> buffer;
    int bufferSize = 1024;

    do
    {
        bufferSize *= 2;
        buffer.calloc ((size_t)bufferSize);

        cfg.ifc_len = bufferSize;
        cfg.ifc_buf = buffer;

        if (ioctl (sock, SIOCGIFCONF, &cfg) < 0 && errno != EINVAL)
            return;

    } while (bufferSize < cfg.ifc_len + 2 * (int) (IFNAMSIZ + sizeof (struct sockaddr_in6)));

   #if BEAST_MAC || BEAST_IOS
    while (cfg.ifc_len >= (int) (IFNAMSIZ + sizeof (struct sockaddr_in)))
    {
        if (cfg.ifc_req->ifr_addr.sa_family == AF_INET) // Skip non-internet addresses
            addAddress ((const sockaddr_in*) &cfg.ifc_req->ifr_addr, result);

        cfg.ifc_len -= IFNAMSIZ + cfg.ifc_req->ifr_addr.sa_len;
        cfg.ifc_buf += IFNAMSIZ + cfg.ifc_req->ifr_addr.sa_len;
    }
   #else
    for (size_t i = 0; i < cfg.ifc_len / sizeof (struct ifreq); ++i)
    {
        const ifreq& item = cfg.ifc_req[i];

        if (item.ifr_addr.sa_family == AF_INET)
            addAddress ((const sockaddr_in*) &item.ifr_addr, result);
    }
   #endif
}

void IPAddress::findAllAddresses (Array<IPAddress>& result)
{
    const int sock = socket (AF_INET, SOCK_DGRAM, 0); // a dummy socket to execute the IO control

    if (sock >= 0)
    {
        findIPAddresses (sock, result);
        ::close (sock);
    }
}
#endif