1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #pragma weak getpass = _getpass 34 #pragma weak getpassphrase = _getpassphrase 35 36 #include "synonyms.h" 37 #include "file64.h" 38 #include "mtlib.h" 39 #include <stdio.h> 40 #include <sys/types.h> 41 #include <signal.h> 42 #include <unistd.h> 43 #include <stropts.h> 44 #include <termio.h> 45 #include <thread.h> 46 #include <synch.h> 47 #include "libc.h" 48 #include "stdiom.h" 49 #include "tsd.h" 50 51 static void catch(int); 52 static int intrupt; 53 static char *__getpass(const char *, int); 54 55 #define MAXPASSWD 256 /* max significant characters in password */ 56 #define SMLPASSWD 8 /* unix standard characters in password */ 57 58 59 char * 60 getpass(const char *prompt) 61 { 62 return ((char *)__getpass(prompt, SMLPASSWD)); 63 } 64 65 char * 66 getpassphrase(const char *prompt) 67 { 68 return ((char *)__getpass(prompt, MAXPASSWD)); 69 } 70 71 static char * 72 __getpass(const char *prompt, int size) 73 { 74 struct termio ttyb; 75 unsigned short flags; 76 char *p; 77 int c; 78 FILE *fi; 79 char *pbuf = tsdalloc(_T_GETPASS, MAXPASSWD + 1, NULL); 80 void (*sig)(int); 81 rmutex_t *lk; 82 83 if (pbuf == NULL || 84 (fi = fopen("/dev/tty", "r")) == NULL) 85 return (NULL); 86 setbuf(fi, NULL); 87 sig = signal(SIGINT, catch); 88 intrupt = 0; 89 (void) ioctl(FILENO(fi), TCGETA, &ttyb); 90 flags = ttyb.c_lflag; 91 ttyb.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); 92 (void) ioctl(FILENO(fi), TCSETAF, &ttyb); 93 FLOCKFILE(lk, stderr); 94 (void) fputs(prompt, stderr); 95 p = pbuf; 96 while (!intrupt && 97 (c = GETC(fi)) != '\n' && c != '\r' && c != EOF) { 98 if (p < &pbuf[ size ]) 99 *p++ = (char)c; 100 } 101 *p = '\0'; 102 ttyb.c_lflag = flags; 103 (void) ioctl(FILENO(fi), TCSETAW, &ttyb); 104 (void) PUTC('\n', stderr); 105 FUNLOCKFILE(lk); 106 (void) signal(SIGINT, sig); 107 (void) fclose(fi); 108 if (intrupt) 109 (void) kill(getpid(), SIGINT); 110 return (pbuf); 111 } 112 113 /* ARGSUSED */ 114 static void 115 catch(int x) 116 { 117 intrupt = 1; 118 } 119