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