libexec/telnetd/authenc.c

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)authenc.c        8.2 (Berkeley) 5/30/95
  30  * $FreeBSD: src/crypto/telnet/telnetd/authenc.c,v 1.4.2.2 2002/04/13 10:59:08 markm Exp $
  31  */
  32
  33 #ifdef  AUTHENTICATION
  34 #ifdef  ENCRYPTION
  35 /* Above "#ifdef"s actually "or"'ed together. XXX MarkM
  36  */
  37 #include "telnetd.h"
  38 #include <libtelnet/misc.h>
  39
  40 int
  41 net_write(unsigned char *str, int len)
  42 {
  43         if (nfrontp + len < netobuf + BUFSIZ) {
  44                 output_datalen(str, len);
  45                 return(len);
  46         }
  47         return(0);
  48 }
  49
  50 void
  51 net_encrypt(void)
  52 {
  53 #ifdef  ENCRYPTION
  54         char *s = (nclearto > nbackp) ? nclearto : nbackp;
  55         if (s < nfrontp && encrypt_output) {
  56                 (*encrypt_output)((unsigned char *)s, nfrontp - s);
  57         }
  58         nclearto = nfrontp;
  59 #endif /* ENCRYPTION */
  60 }
  61
  62 int
  63 telnet_spin(void)
  64 {
  65         ttloop();
  66         return(0);
  67 }
  68
  69 char *
  70 telnet_getenv(char *val)
  71 {
  72         return(getenv(val));
  73 }
  74
  75 char *
  76 telnet_gets(const char *prompt __unused, char *result __unused, int length __unused, int echo __unused)
  77 {
  78         return(NULL);
  79 }
  80 #endif  /* ENCRYPTION */
  81 #endif  /* AUTHENTICATION */