/*
 * Copyright 2000, International Business Machines Corporation and others.
 * All Rights Reserved.
 *
 * This software has been released under the terms of the IBM Public
 * License.  For details, see the LICENSE file in the top-level source
 * directory or online at http://www.openafs.org/dl/license10.html
 */

#include <afsconfig.h>
#include <afs/param.h>

#include <roken.h>

#include <lock.h>
#include <rx/xdr.h>
#include <rx/rx.h>

#define UBIK_INTERNALS
#include "ubik.h"

/*! \file
 * This file contain useful subroutines for parsing command line args for ubik
 * applications.
 */
int
ubik_ParseServerList(int argc, char **argv, afs_uint32 *ahost,
		     afs_uint32 *aothers)
{
    afs_int32 i;
    char *tp;
    struct hostent *th;
    char hostname[64];
    afs_uint32 myHost, temp;
    afs_int32 counter;
    int inServer, sawServer;

    gethostname(hostname, sizeof(hostname));
    th = gethostbyname(hostname);
    if (!th)
	return UBADHOST;
    memcpy(&myHost, th->h_addr, sizeof(afs_uint32));
    *ahost = myHost;

    inServer = 0;		/* haven't seen -servers yet */
    sawServer = 0;
    counter = 0;
    for (i = 1; i < argc; i++) {
	/* look for -servers argument */
	tp = argv[i];

	if (inServer) {
	    if (*tp == '-') {
		inServer = 0;
	    } else {
		/* otherwise this is a new host name */
		th = gethostbyname(tp);
		if (!th)
		    return UBADHOST;
		memcpy(&temp, th->h_addr, sizeof(afs_uint32));
		if (temp != myHost) {
		    if (counter++ >= MAXSERVERS)
			return UNHOSTS;
		    *aothers++ = temp;
		}
	    }
	}
	/* haven't seen a -server yet */
	if (!strcmp(tp, "-servers")) {
	    inServer = 1;
	    sawServer = 1;
	} else if (!strcmp(tp, "-dubik")) {
	    ubik_debugFlag = 1;
	}
    }
    if (!sawServer) {
	/* never saw a -server */
	return UNOENT;
    }
    if (counter < MAXSERVERS)
	*aothers++ = 0;		/* null terminate if there's room */
    return 0;
}