src/bin/network/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
  34 #if 0
  35 #ifndef lint
  36 static const char sccsid[] = "@(#)authenc.c     8.2 (Berkeley) 5/30/95";
  37 #endif
  38 #endif
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD: src/contrib/telnet/telnetd/authenc.c,v 1.8 2003/05/04 02:54:49 obrien Exp $");
  41
  42 #ifdef  AUTHENTICATION
  43 #ifdef  ENCRYPTION
  44 /* Above "#ifdef"s actually "or"'ed together. XXX MarkM
  45  */
  46 #include "telnetd.h"
  47 #include <libtelnet/misc.h>
  48
  49 int
  50 net_write(unsigned char *str, int len)
  51 {
  52         if (nfrontp + len < netobuf + BUFSIZ) {
  53                 output_datalen(str, len);
  54                 return(len);
  55         }
  56         return(0);
  57 }
  58
  59 void
  60 net_encrypt(void)
  61 {
  62 #ifdef  ENCRYPTION
  63         char *s = (nclearto > nbackp) ? nclearto : nbackp;
  64         if (s < nfrontp && encrypt_output) {
  65                 (*encrypt_output)((unsigned char *)s, nfrontp - s);
  66         }
  67         nclearto = nfrontp;
  68 #endif /* ENCRYPTION */
  69 }
  70
  71 int
  72 telnet_spin(void)
  73 {
  74         ttloop();
  75         return(0);
  76 }
  77
  78 char *
  79 telnet_getenv(char *val)
  80 {
  81         return(getenv(val));
  82 }
  83
  84 char *
  85 telnet_gets(const char *prompt __unused, char *result __unused, int length __unused, int echo __unused)
  86 {
  87         return(NULL);
  88 }
  89 #endif  /* ENCRYPTION */
  90 #endif  /* AUTHENTICATION */