/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getservent.c        5.9 (Berkeley) 2/24/91";
#endif /* LIBC_SCCS and not lint */

#define _KERNEL
#include "ixnet.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define MAXALIASES      35

void
setservent(int f) 
{
    register struct ixnet *p = (struct ixnet *)u.u_ixnet;
    register int network_protocol = p->u_networkprotocol;

    if (network_protocol == IX_NETWORK_AS225) {
        SOCK_setservent(f);
    }
    else /* if (network_protocol == IX_NETWORK_AMITCP) */ {
        if (u.u_serv_fp == NULL) {
            u.u_serv_fp = fopen(_TCP_PATH_SERVICES, "r" );
            if (!u.u_serv_fp)
                return;
        }
        else
            rewind(u.u_serv_fp);
        u.u_serv_stayopen |= f;
    }
}

void
endservent(void)
{
    register struct ixnet *p = (struct ixnet *)u.u_ixnet;
    if (p->u_networkprotocol == IX_NETWORK_AS225) {
        SOCK_endservent();
    }
    else {
        if (u.u_serv_fp) {
            fclose(u.u_serv_fp);
            u.u_serv_fp = NULL;
        }
        u.u_serv_stayopen = 0;
    }
}

struct servent *
getservent(void)
{
        char *s;
        register char *cp, **q;
        register struct ixnet *p = (struct ixnet *)u.u_ixnet;
        register int network_protocol = p->u_networkprotocol;

        if (network_protocol == IX_NETWORK_AS225) {
            return SOCK_getservent();
        }
        else /*if (network_protocol == IX_NETWORK_AMITCP)*/ {
            if (u.u_serv_line == NULL)
              u.u_serv_line = malloc(BUFSIZ + 1);
            if (u.u_serv_aliases == NULL)
              u.u_serv_aliases = malloc(MAXALIASES * sizeof(char *));
            if (u.u_serv_line == NULL || u.u_serv_aliases == NULL)
              {
                errno = ENOMEM;
                return NULL;
              }
            if (u.u_serv_fp == NULL && (u.u_serv_fp = fopen(_TCP_PATH_SERVICES, "r" )) == NULL)
                return (NULL);
again:
            if ((s = fgets(u.u_serv_line, BUFSIZ, u.u_serv_fp)) == NULL)
                return (NULL);

            if (*s == '#')
                goto again;

            cp = strpbrk(s, "#\n");
            if (cp == NULL)
                goto again;

            *cp = '\0';
            u.u_serv.s_name = s;
            s = strpbrk(s, " \t");
            if (s == NULL)
                goto again;

            *s++ = '\0';
            while (*s == ' ' || *s == '\t')
                s++;

            cp = strpbrk(s, ",/");
            if (cp == NULL)
                goto again;

            *cp++ = '\0';
            u.u_serv.s_port = htons((u_short)atoi(s));
            u.u_serv.s_proto = cp;
            q = u.u_serv.s_aliases = u.u_serv_aliases;
            cp = strpbrk(cp, " \t");
            if (cp != NULL)
                *cp++ = '\0';

            while (cp && *cp) {
                if (*cp == ' ' || *cp == '\t') {
                    cp++;
                continue;
            }
            if (q < &u.u_serv_aliases[MAXALIASES - 1])
                *q++ = cp;

            cp = strpbrk(cp, " \t");
            if (cp != NULL)
                *cp++ = '\0';
        }
        *q = NULL;
        return (&u.u_serv);
    }
}