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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 32 __FBSDID("$FreeBSD$"); 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)read_password.c 8.3 (Berkeley) 5/30/95"; 37 #endif 38 #endif /* not lint */ 39 40 /* 41 * $Source: /mit/kerberos/src/lib/des/RCS/read_password.c,v $ 42 * $Author: jon $ 43 * 44 * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute 45 * of Technology. 46 * 47 * For copying and distribution information, please see the file 48 * <mit-copyright.h>. 49 * 50 * This routine prints the supplied string to standard 51 * output as a prompt, and reads a password string without 52 * echoing. 53 */ 54 55 #if defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) 56 57 #include <stdio.h> 58 #include <strings.h> 59 #include <sys/ioctl.h> 60 #include <signal.h> 61 #include <setjmp.h> 62 63 static jmp_buf env; 64 65 /*** Routines ****************************************************** */ 66 /* 67 * This version just returns the string, doesn't map to key. 68 * 69 * Returns 0 on success, non-zero on failure. 70 */ 71 72 int 73 local_des_read_pw_string(s,max,prompt,verify) 74 char *s; 75 int max; 76 char *prompt; 77 int verify; 78 { 79 int ok = 0; 80 char *ptr; 81 82 jmp_buf old_env; 83 struct sgttyb tty_state; 84 char key_string[BUFSIZ]; 85 86 if (max > BUFSIZ) { 87 return -1; 88 } 89 90 /* XXX assume jmp_buf is typedef'ed to an array */ 91 memmove((char *)env, (char *)old_env, sizeof(env)); 92 if (setjmp(env)) 93 goto lose; 94 95 /* save terminal state*/ 96 if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1) 97 return -1; 98 /* 99 push_signals(); 100 */ 101 /* Turn off echo */ 102 tty_state.sg_flags &= ~ECHO; 103 if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1) 104 return -1; 105 while (!ok) { 106 (void) printf("%s", prompt); 107 (void) fflush(stdout); 108 while (!fgets(s, max, stdin)); 109 110 if ((ptr = strchr(s, '\n'))) 111 *ptr = '\0'; 112 if (verify) { 113 printf("\nVerifying, please re-enter %s",prompt); 114 (void) fflush(stdout); 115 if (!fgets(key_string, sizeof(key_string), stdin)) { 116 clearerr(stdin); 117 continue; 118 } 119 if ((ptr = strchr(key_string, '\n'))) 120 *ptr = '\0'; 121 if (strcmp(s,key_string)) { 122 printf("\n\07\07Mismatch - try again\n"); 123 (void) fflush(stdout); 124 continue; 125 } 126 } 127 ok = 1; 128 } 129 130 lose: 131 if (!ok) 132 memset(s, 0, max); 133 printf("\n"); 134 /* turn echo back on */ 135 tty_state.sg_flags |= ECHO; 136 if (ioctl(0,TIOCSETP,(char *)&tty_state)) 137 ok = 0; 138 /* 139 pop_signals(); 140 */ 141 memmove((char *)old_env, (char *)env, sizeof(env)); 142 if (verify) 143 memset(key_string, 0, sizeof (key_string)); 144 s[max-1] = 0; /* force termination */ 145 return !ok; /* return nonzero if not okay */ 146 } 147 #endif /* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */ 148