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  * $DragonFly: src/crypto/telnet/telnetd/authenc.c,v 1.2 2003/06/17 04:24:37 dillon Exp $
  32  */
  33
  34 #ifdef  AUTHENTICATION
  35 #ifdef  ENCRYPTION
  36 /* Above "#ifdef"s actually "or"'ed together. XXX MarkM
  37  */
  38 #include "telnetd.h"
  39 #include <libtelnet/misc.h>
  40
  41 int
  42 net_write(unsigned char *str, int len)
  43 {
  44         if (nfrontp + len < netobuf + BUFSIZ) {
  45                 output_datalen(str, len);
  46                 return(len);
  47         }
  48         return(0);
  49 }
  50
  51 void
  52 net_encrypt(void)
  53 {
  54 #ifdef  ENCRYPTION
  55         char *s = (nclearto > nbackp) ? nclearto : nbackp;
  56         if (s < nfrontp && encrypt_output) {
  57                 (*encrypt_output)((unsigned char *)s, nfrontp - s);
  58         }
  59         nclearto = nfrontp;
  60 #endif /* ENCRYPTION */
  61 }
  62
  63 int
  64 telnet_spin(void)
  65 {
  66         ttloop();
  67         return(0);
  68 }
  69
  70 char *
  71 telnet_getenv(char *val)
  72 {
  73         return(getenv(val));
  74 }
  75
  76 char *
  77 telnet_gets(const char *prompt __unused, char *result __unused, int length __unused, int echo __unused)
  78 {
  79         return(NULL);
  80 }
  81 #endif  /* ENCRYPTION */
  82 #endif  /* AUTHENTICATION */