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