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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)authenc.c        8.2 (Berkeley) 5/30/95
  34  * $FreeBSD: src/crypto/telnet/telnetd/authenc.c,v 1.4.2.2 2002/04/13 10:59:08 markm Exp $
  35  * $DragonFly: src/crypto/telnet/telnetd/authenc.c,v 1.2 2003/06/17 04:24:37 dillon Exp $
  36  */
  37
  38 #ifdef  AUTHENTICATION
  39 #ifdef  ENCRYPTION
  40 /* Above "#ifdef"s actually "or"'ed together. XXX MarkM
  41  */
  42 #include "telnetd.h"
  43 #include <libtelnet/misc.h>
  44
  45 int
  46 net_write(unsigned char *str, int len)
  47 {
  48         if (nfrontp + len < netobuf + BUFSIZ) {
  49                 output_datalen(str, len);
  50                 return(len);
  51         }
  52         return(0);
  53 }
  54
  55 void
  56 net_encrypt(void)
  57 {
  58 #ifdef  ENCRYPTION
  59         char *s = (nclearto > nbackp) ? nclearto : nbackp;
  60         if (s < nfrontp && encrypt_output) {
  61                 (*encrypt_output)((unsigned char *)s, nfrontp - s);
  62         }
  63         nclearto = nfrontp;
  64 #endif /* ENCRYPTION */
  65 }
  66
  67 int
  68 telnet_spin(void)
  69 {
  70         ttloop();
  71         return(0);
  72 }
  73
  74 char *
  75 telnet_getenv(char *val)
  76 {
  77         return(getenv(val));
  78 }
  79
  80 char *
  81 telnet_gets(const char *prompt __unused, char *result __unused, int length __unused, int echo __unused)
  82 {
  83         return(NULL);
  84 }
  85 #endif  /* ENCRYPTION */
  86 #endif  /* AUTHENTICATION */