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 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 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 80 telnet_spin(void) 81 { 82 return -1; 83 } 84 85 char * 86 telnet_getenv(char *val) 87 { 88 return env_getvalue(val); 89 } 90 91 char * 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