authenc.c revision 63249 
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#ifndef lint
35#if 0
36static const char sccsid[] = "@(#)authenc.c	8.2 (Berkeley) 5/30/95";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/contrib/telnet/telnetd/authenc.c 50479 1999-08-28 01:35:59Z peter $";
40#endif /* not lint */
41
42#if	defined(AUTHENTICATION) || defined(ENCRYPTION)
43#include "telnetd.h"
44#include <libtelnet/misc.h>
45
46	int
47net_write(str, len)
48	unsigned char *str;
49	int len;
50{
51	if (nfrontp + len < netobuf + BUFSIZ) {
52		memmove((void *)nfrontp, (void *)str, len);
53		nfrontp += len;
54		return(len);
55	}
56	return(0);
57}
58
59	void
60net_encrypt()
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
72telnet_spin()
73{
74	ttloop();
75	return(0);
76}
77
78	char *
79telnet_getenv(val)
80	char *val;
81{
82	return(getenv(val));
83}
84
85	char *
86telnet_gets(prompt, result, length, echo)
87	char *prompt;
88	char *result;
89	int length;
90	int echo;
91{
92	return((char *)0);
93}
94#endif	/* defined(AUTHENTICATION) || defined(ENCRYPTION) */
95