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
35 static 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
54 int
telnet_net_write(unsigned char * str,int len)55 telnet_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
68 void
net_encrypt(void)69 net_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
79 int
telnet_spin(void)80 telnet_spin(void)
81 {
82 return -1;
83 }
84
85 char *
telnet_getenv(char * val)86 telnet_getenv(char *val)
87 {
88 return env_getvalue(val);
89 }
90
91 char *
telnet_gets(char * prmpt,char * result,int length,int echo)92 telnet_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