1/*- 2 * Copyright (c) 1992, 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#include <sys/cdefs.h> 35 36#ifdef __FBSDID 37__FBSDID("$FreeBSD: src/crypto/telnet/libtelnet/read_password.c,v 1.1.1.1.8.2 2002/04/13 10:59:07 markm Exp $"); 38#endif 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)read_password.c 8.3 (Berkeley) 5/30/95"; 43#endif 44#endif /* not lint */ 45 46/* 47 * $Source: /Users/Shared/libtelnet/libtelnet/read_password.c,v $ 48 * $Author: nicolai $ 49 * 50 * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute 51 * of Technology. 52 * 53 * For copying and distribution information, please see the file 54 * <mit-copyright.h>. 55 * 56 * This routine prints the supplied string to standard 57 * output as a prompt, and reads a password string without 58 * echoing. 59 */ 60 61#if defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) 62 63#include <stdio.h> 64#include <strings.h> 65#include <sys/ioctl.h> 66#include <signal.h> 67#include <setjmp.h> 68 69static jmp_buf env; 70 71/*** Routines ****************************************************** */ 72/* 73 * This version just returns the string, doesn't map to key. 74 * 75 * Returns 0 on success, non-zero on failure. 76 */ 77 78int 79local_des_read_pw_string(s,max,prompt,verify) 80 char *s; 81 int max; 82 char *prompt; 83 int verify; 84{ 85 int ok = 0; 86 char *ptr; 87 88 jmp_buf old_env; 89 struct sgttyb tty_state; 90 char key_string[BUFSIZ]; 91 92 if (max > BUFSIZ) { 93 return -1; 94 } 95 96 /* XXX assume jmp_buf is typedef'ed to an array */ 97 memmove((char *)env, (char *)old_env, sizeof(env)); 98 if (setjmp(env)) 99 goto lose; 100 101 /* save terminal state*/ 102 if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1) 103 return -1; 104/* 105 push_signals(); 106*/ 107 /* Turn off echo */ 108 tty_state.sg_flags &= ~ECHO; 109 if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1) 110 return -1; 111 while (!ok) { 112 (void) printf("%s", prompt); 113 (void) fflush(stdout); 114 while (!fgets(s, max, stdin)); 115 116 if ((ptr = strchr(s, '\n'))) 117 *ptr = '\0'; 118 if (verify) { 119 printf("\nVerifying, please re-enter %s",prompt); 120 (void) fflush(stdout); 121 if (!fgets(key_string, sizeof(key_string), stdin)) { 122 clearerr(stdin); 123 continue; 124 } 125 if ((ptr = strchr(key_string, '\n'))) 126 *ptr = '\0'; 127 if (strcmp(s,key_string)) { 128 printf("\n\07\07Mismatch - try again\n"); 129 (void) fflush(stdout); 130 continue; 131 } 132 } 133 ok = 1; 134 } 135 136lose: 137 if (!ok) 138 memset(s, 0, max); 139 printf("\n"); 140 /* turn echo back on */ 141 tty_state.sg_flags |= ECHO; 142 if (ioctl(0,TIOCSETP,(char *)&tty_state)) 143 ok = 0; 144/* 145 pop_signals(); 146*/ 147 memmove((char *)old_env, (char *)env, sizeof(env)); 148 if (verify) 149 memset(key_string, 0, sizeof (key_string)); 150 s[max-1] = 0; /* force termination */ 151 return !ok; /* return nonzero if not okay */ 152} 153#endif /* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */ 154