lib/common/gethost.c

/*
 * Copyright (C) 1993-2005  by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 *
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include "ipf.h"

int gethost(name, hostp, use_inet6)
char *name;
i6addr_t *hostp;
int use_inet6;
{
    struct addrinfo hints, *ai;
    struct netent *n;
    int error;

    if (!strcmp(name, "test.host.dots")) {
        hostp->in4.s_addr = htonl(0xfedcba98);
        return 0;
    }

    if (!strcmp(name, "<thishost>"))
        name = thishost;

    bzero(&hints, sizeof (hints));
    if (use_inet6 == 0)
        hints.ai_family = AF_INET;
    else
        hints.ai_family = AF_INET6;

    error = getaddrinfo(name, NULL, &hints, &ai);

    if ((error == 0) && (ai != NULL) && (ai->ai_addr != NULL)) {
        switch (ai->ai_family)
        {
            case AF_INET:
                hostp->in4 = ((struct sockaddr_in *)
                    ai->ai_addr)->sin_addr;
                break;
            case AF_INET6:
                hostp->in6 = ((struct sockaddr_in6 *)
                    ai->ai_addr)->sin6_addr;
                break;
            default:
                break;
        }
        freeaddrinfo(ai);
        return 0;
    }

    if (ai != NULL)
        freeaddrinfo(ai);

    if (use_inet6 == 0) {
        n = getnetbyname(name);
        if (n != NULL) {
            hostp->in4.s_addr = htonl(n->n_net);
            return 0;
        }
    }
    return -1;
}