/* vim: set expandtab ts=4 sw=4: */
/*
 * You may redistribute this program and/or modify it under the terms of
 * the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "util/platform/Sockaddr.h"
#include "util/log/Log.h"
#include "exception/Except.h"
#include "memory/Allocator.h"
#include "memory/BufferAllocator.h"
#include "util/platform/netdev/NetDev.h"
#include "util/platform/netdev/NetPlatform.h"

void NetDev_addAddress(const char* ifName,
                       struct Sockaddr* sa,
                       int prefixLen,
                       struct Log* logger,
                       struct Except* eh)
{
    int addrFam = Sockaddr_getFamily(sa);

    struct Allocator* alloc;
    BufferAllocator_STACK(alloc, 4096);
    char* printedAddr = Sockaddr_print(sa, alloc);
    if (addrFam != Sockaddr_AF_INET && addrFam != Sockaddr_AF_INET6) {
        Except_throw(eh, "Unknown address type for address [%s]", printedAddr);
    }

    int prefixMax = (addrFam == Sockaddr_AF_INET6) ? 128 : 32;
    if (prefixLen < 0 || prefixLen > prefixMax) {
        Except_throw(eh, "prefixLen [%d] must be greater than 0 and less than %d",
                     prefixLen, prefixMax);
    }

    void* addr;
    int len = Sockaddr_getAddress(sa, &addr);
    if (len < 0 || len != prefixMax / 8) {
        Except_throw(eh, "Invalid sockaddr [%s]", printedAddr);
    }

    Log_info(logger, "Setting IP address [%s/%d] on interface [%s]",
             printedAddr, prefixLen, ifName);

    NetPlatform_addAddress(ifName, addr, prefixLen, addrFam, logger, eh);
}

void NetDev_setMTU(const char* interfaceName,
                   uint32_t mtu,
                   struct Log* logger,
                   struct Except* eh)
{
     NetPlatform_setMTU(interfaceName, mtu, logger, eh);
}

void NetDev_flushAddresses(const char* deviceName, struct Except* eh)
{
    #ifdef win32
        NetPlatform_flushAddresses(deviceName, eh);
    #endif
}