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