usr/src/usr.bin/telnet/authenc.c

/*-
 * Copyright (c) 1991 The 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.
 */

#ifndef lint
static char sccsid[] = "@(#)authenc.c   5.1 (Berkeley) 3/1/91";
#endif /* not lint */

#if     defined(ENCRYPT) || defined(AUTHENTICATE)
#include <sys/types.h>
#include <arpa/telnet.h>
#include <libtelnet/encrypt.h>
#include <libtelnet/misc.h>

#include "general.h"
#include "ring.h"
#include "externs.h"
#include "defines.h"
#include "types.h"

        int
net_write(str, len)
        unsigned char *str;
        int len;
{
        if (NETROOM() > len) {
                ring_supply_data(&netoring, str, len);
                if (str[0] == IAC && str[1] == SE)
                        printsub('>', &str[2], len-2);
                return(len);
        }
        return(0);
}

        void
net_encrypt()
{
#if     defined(ENCRYPT)
        if (encrypt_output)
                ring_encrypt(&netoring, encrypt_output);
        else
                ring_clearto(&netoring);
#endif
}

        int
telnet_spin()
{
        return(-1);
}

        char *
telnet_getenv(val)
        char *val;
{
        return((char *)env_getvalue((unsigned char *)val));
}

        char *
telnet_gets(prompt, result, length, echo)
        char *prompt;
        char *result;
        int length;
        int echo;
{
        extern char *getpass();
        extern int globalmode;
        int om = globalmode;
        char *res;

        TerminalNewMode(-1);
        if (echo) {
                printf("%s", prompt);
                res = fgets(result, length, stdin);
        } else if (res = getpass(prompt)) {
                strncpy(result, res, length);
                res = result;
        }
        TerminalNewMode(om);
        return(res);
}
#endif