/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 1994, by Sun Microsystems, Inc.
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>

#include <netdb.h>
#include "getent.h"

static int
putservent(const struct servent *sp, FILE *fp)
{
        char **p;
        int rc = 0;

        if (sp == NULL) {
                return (1);
        }

        if (fprintf(fp, "%-20s %d/%s",
            sp->s_name, ntohs(sp->s_port), sp->s_proto) == EOF)
                rc = 1;
        for (p = sp->s_aliases; *p != 0; p++) {
                if (fprintf(fp, " %s", *p) == EOF)
                        rc = 1;
        }
        if (putc('\n', fp) == EOF)
                rc = 1;
        return (rc);
}

/*
 * getservbyname/addr - get entries from service database
 * Accepts arguments as:
 *      port/protocol
 *      port
 *      name/protocol
 *      name
 */
int
dogetserv(const char **list)
{
        struct servent *sp;
        int rc = EXC_SUCCESS;

        if (list == NULL || *list == NULL) {
                while ((sp = getservent()) != NULL)
                        (void) putservent(sp, stdout);
        } else {
                for (; *list != NULL; list++) {
                        int port;
                        char key[BUFSIZ];
                        const char *protocol = NULL;
                        char *cp;

                        /* Copy string to avoiding modifying the argument */
                        (void) strncpy(key, *list, sizeof (key));
                        key[sizeof (key) - 1] = '\0';
                        /* Split at a '/' to extract protocol number */
                        if ((cp = strchr(key, '/')) != NULL) {
                                *cp = '\0';
                                protocol = cp + 1;
                        }
                        port = htons(atoi(key));
                        if (port != 0)
                                sp = getservbyport(port, protocol);
                        else
                                sp = getservbyname(key, protocol);
                        if (sp == NULL)
                                rc = EXC_NAME_NOT_FOUND;
                        else
                                (void) putservent(sp, stdout);
                }
        }

        return (rc);
}