1/*	$NetBSD: authenc.c,v 1.14 2018/12/14 23:40:17 christos Exp $	*/
2
3/*-
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)authenc.c	8.1 (Berkeley) 6/6/93";
36#else
37__RCSID("$NetBSD: authenc.c,v 1.14 2018/12/14 23:40:17 christos Exp $");
38#endif
39#endif /* not lint */
40
41#if	defined(AUTHENTICATION) || defined(ENCRYPTION)
42#include <unistd.h>
43#include <sys/types.h>
44#include <arpa/telnet.h>
45#include <libtelnet/encrypt.h>
46#include <libtelnet/misc.h>
47
48#include "general.h"
49#include "ring.h"
50#include "externs.h"
51#include "defines.h"
52#include "types.h"
53
54int
55telnet_net_write(unsigned char *str, int len)
56{
57	if (NETROOM() <= len)
58		return 0;
59	ring_supply_data(&netoring, str, len);
60	if (str[0] == IAC && str[1] == SE) {
61		if (len < 2)
62			return 0;
63		printsub('>', &str[2], len - 2);
64	}
65	return len;
66}
67
68void
69net_encrypt(void)
70{
71#ifdef	ENCRYPTION
72	if (encrypt_output)
73		ring_encrypt(&netoring, encrypt_output);
74	else
75		ring_clearto(&netoring);
76#endif	/* ENCRYPTION */
77}
78
79int
80telnet_spin(void)
81{
82	return -1;
83}
84
85char *
86telnet_getenv(char *val)
87{
88	return env_getvalue(val);
89}
90
91char *
92telnet_gets(char *prmpt, char *result, int length, int echo)
93{
94	extern int globalmode;
95	int om = globalmode;
96	char *res;
97
98	if (length < 0)
99		abort();
100
101	TerminalNewMode(-1);
102	if (echo) {
103		printf("%s", prmpt);
104		res = fgets(result, length, stdin);
105	} else if ((res = getpass(prmpt)) != NULL) {
106		strlcpy(result, res, (size_t)length);
107		res = result;
108	}
109	TerminalNewMode(om);
110	return res;
111}
112#endif	/* defined(AUTHENTICATION) || defined(ENCRYPTION) */
113